firewall can distinguish if the host connecting has an overlapping network, is a VPN peer without an overlapping network, or is a unsafe network

.github/actions/code-sign/action.yml

@@ -1,113 +0,0 @@
-name: Code-sign Windows binaries
-description: >
-  Sign every .exe under a given path in place via the DefinedNet code-signer
-  Lambda. If `role` or `bucket` is empty, logs a notice and skips signing so
-  forks and dev branches without AWS access still produce usable builds.
-
-inputs:
-  path:
-    description: "Directory whose .exe files should be signed in place"
-    required: true
-  role:
-    description: "IAM role ARN to assume via OIDC; empty disables signing"
-    required: false
-    default: ""
-  bucket:
-    description: "S3 staging bucket the code-signer Lambda reads from; empty disables signing"
-    required: false
-    default: ""
-  region:
-    description: "AWS region for the role and Lambda"
-    required: false
-    default: "us-east-2"
-  function-name:
-    description: "Code-signer Lambda function name"
-    required: false
-    default: "code-signer"
-  key-prefix:
-    description: "S3 key prefix the caller is authorized to write under"
-    required: false
-    default: "code-signing/slackhq/nebula"
-
-runs:
-  using: composite
-  steps:
-    - name: Skip notice
-      if: inputs.role == '' || inputs.bucket == ''
-      shell: sh
-      run: echo "::notice::code-signer role or bucket not set; skipping code signing."
-
-    - name: Configure AWS credentials
-      if: inputs.role != '' && inputs.bucket != ''
-      uses: aws-actions/configure-aws-credentials@v6
-      with:
-        role-to-assume: ${{ inputs.role }}
-        aws-region: ${{ inputs.region }}
-        # Default is 12 retries to ride out IAM trust-policy propagation; once
-        # the role is stable we want a real misconfiguration to fail fast.
-        retry-max-attempts: 5
-
-    - name: Sign .exe files
-      if: inputs.role != '' && inputs.bucket != ''
-      shell: sh
-      env:
-        SIGN_PATH: ${{ inputs.path }}
-        BUCKET: ${{ inputs.bucket }}
-        FUNCTION_NAME: ${{ inputs.function-name }}
-        KEY_PREFIX: ${{ inputs.key-prefix }}
-      run: |
-        set -eu
-        RUN="${GITHUB_RUN_ID}-${GITHUB_RUN_ATTEMPT}"
-
-        find "$SIGN_PATH" -name '*.exe' -print | while read -r path
-        do
-            rel=${path#"$SIGN_PATH"/}
-            file=$(basename "$path")
-            name=${file%.exe}
-            prefix="${KEY_PREFIX}/${RUN}"
-            src="${prefix}/unsigned/${rel}"
-            dst="${prefix}/signed/${rel}"
-
-            echo "::group::Sign ${rel}"
-            echo "Uploading unsigned to s3://${BUCKET}/${src}"
-            aws s3 cp --no-progress "$path" "s3://${BUCKET}/${src}" >/dev/null
-
-            echo "Invoking ${FUNCTION_NAME} Lambda"
-            payload=$(jq -nc \
-                --arg s "$src" \
-                --arg d "$dst" \
-                --arg p "$name" \
-                '{source_key: $s, dest_key: $d, program_name: $p}')
-            meta=$(aws lambda invoke \
-                --function-name "$FUNCTION_NAME" \
-                --cli-binary-format raw-in-base64-out \
-                --payload "$payload" \
-                --output json \
-                /tmp/sign-resp.json)
-            if echo "$meta" | jq -e '.FunctionError != null' >/dev/null
-            then
-                echo "::endgroup::"
-                echo "::error::code-signer Lambda failed for ${rel}"
-                cat /tmp/sign-resp.json >&2
-                exit 1
-            fi
-
-            echo "Downloading signed back to ${path}"
-            aws s3 cp --no-progress "s3://${BUCKET}/${dst}" "$path" >/dev/null
-
-            aws s3 rm "s3://${BUCKET}/${src}" >/dev/null 2>&1 || true
-            aws s3 rm "s3://${BUCKET}/${dst}" >/dev/null 2>&1 || true
-
-            # Sanity-check the bytes we got back actually carry an Authenticode
-            # signature that this machine can validate end to end.
-            status=$(powershell -NoProfile -Command "(Get-AuthenticodeSignature -FilePath '$path').Status" | tr -d '\r')
-            if [ "$status" != "Valid" ]
-            then
-                echo "::endgroup::"
-                echo "::error::${rel} signature status: ${status} (expected Valid)"
-                exit 1
-            fi
-
-            echo "Signed ${rel} (sha256=$(jq -r '.sha256' /tmp/sign-resp.json), status=${status})"
-            echo "::endgroup::"
-        done

.github/workflows/gofmt.yml

@@ -0,0 +1,34 @@
+name: gofmt
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    paths:
+      - '.github/workflows/gofmt.yml'
+      - '**.go'
+jobs:
+
+  gofmt:
+    name: Run gofmt
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-go@v6
+      with:
+        go-version: '1.25'
+        check-latest: true
+
+    - name: Install goimports
+      run: |
+        go install golang.org/x/tools/cmd/goimports@latest
+
+    - name: gofmt
+      run: |
+        if [ "$(find . -iname '*.go' | grep -v '\.pb\.go$' | xargs goimports -l)" ]
+        then
+          find . -iname '*.go' | grep -v '\.pb\.go$' | xargs goimports -d
+          exit 1
+        fi

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
     name: Build Linux/BSD All
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-go@v6
         with:
@@ -24,7 +24,7 @@ jobs:
           mv build/*.tar.gz release
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
           name: linux-latest
           path: release
@@ -32,11 +32,8 @@ jobs:
   build-windows:
     name: Build Windows
     runs-on: windows-latest
-    permissions:
-      id-token: write
-      contents: read
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-go@v6
         with:
@@ -57,15 +54,8 @@ jobs:
           mkdir build\dist\windows
           mv dist\windows\wintun build\dist\windows\
 
-      - name: Code-sign
-        uses: ./.github/actions/code-sign
-        with:
-          path: build
-          role: ${{ secrets.DEFINED_CODE_SIGNER_ROLE }}
-          bucket: ${{ secrets.DEFINED_CODE_SIGNER_BUCKET }}
-
       - name: Upload artifacts
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
           name: windows-latest
           path: build
@@ -76,7 +66,7 @@ jobs:
       HAS_SIGNING_CREDS: ${{ secrets.AC_USERNAME != '' }}
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-go@v6
         with:
@@ -85,7 +75,7 @@ jobs:
 
       - name: Import certificates
         if: env.HAS_SIGNING_CREDS == 'true'
-        uses: Apple-Actions/import-codesign-certs@v7
+        uses: Apple-Actions/import-codesign-certs@v5
         with:
           p12-file-base64: ${{ secrets.APPLE_DEVELOPER_CERTIFICATE_P12_BASE64 }}
           p12-password: ${{ secrets.APPLE_DEVELOPER_CERTIFICATE_PASSWORD }}
@@ -114,7 +104,7 @@ jobs:
           fi
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
           name: darwin-latest
           path: ./release/*
@@ -134,25 +124,25 @@ jobs:
       # be overwritten
       - name: Checkout code
         if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
-        uses: actions/checkout@v7
+        uses: actions/checkout@v4
 
       - name: Download artifacts
         if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@v4
         with:
           name: linux-latest
           path: artifacts
 
       - name: Login to Docker Hub
         if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
-        uses: docker/login-action@v4
+        uses: docker/login-action@v3
         with:
           username: ${{ vars.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Set up Docker Buildx
         if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@v3
 
       - name: Build and push images
         if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
@@ -163,20 +153,17 @@ jobs:
           mkdir -p build/linux-{amd64,arm64}
           tar -zxvf artifacts/nebula-linux-amd64.tar.gz -C build/linux-amd64/
           tar -zxvf artifacts/nebula-linux-arm64.tar.gz -C build/linux-arm64/
-          docker buildx build . --push -f docker/Dockerfile --platform linux/amd64,linux/arm64 \
-            --build-arg VERSION="${GITHUB_REF#refs/tags/v}" \
-            --build-arg REVISION="${GITHUB_SHA}" \
-            --tag "${DOCKER_IMAGE_REPO}:${DOCKER_IMAGE_TAG}" --tag "${DOCKER_IMAGE_REPO}:${GITHUB_REF#refs/tags/v}"
+          docker buildx build . --push -f docker/Dockerfile --platform linux/amd64,linux/arm64 --tag "${DOCKER_IMAGE_REPO}:${DOCKER_IMAGE_TAG}" --tag "${DOCKER_IMAGE_REPO}:${GITHUB_REF#refs/tags/v}"
 
   release:
     name: Create and Upload Release
     needs: [build-linux, build-darwin, build-windows]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
 
       - name: Download artifacts
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@v4
         with:
           path: artifacts
 
@@ -222,11 +209,10 @@ jobs:
         id: create_release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GITHUB_REF_NAME: ${{ github.ref_name }}
         run: |
           cd artifacts
           gh release create \
             --verify-tag \
-            --title "Release ${GITHUB_REF_NAME}" \
-            "${GITHUB_REF_NAME}" \
+            --title "Release ${{ github.ref_name }}" \
+            "${{ github.ref_name }}" \
             SHASUM256.txt *-latest/*.zip *-latest/*.tar.gz

.github/workflows/smoke-extra.yml

@@ -14,23 +14,13 @@ on:
       - 'go.sum'
 jobs:
 
-  smoke-extra-libvirt:
+  smoke-extra:
     if: github.ref == 'refs/heads/master' || contains(github.event.pull_request.labels.*.name, 'smoke-test-extra')
-    name: ${{ matrix.target }}
+    name: Run extra smoke tests
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        target:
-          - freebsd-amd64
-          - openbsd-amd64
-          - netbsd-amd64
-          - linux-amd64-ipv6disable
-    env:
-      VAGRANT_DEFAULT_PROVIDER: libvirt
     steps:
 
-    - uses: actions/checkout@v7
+    - uses: actions/checkout@v4
 
     - uses: actions/setup-go@v6
       with:
@@ -40,93 +30,22 @@ jobs:
     - name: add hashicorp source
       run: wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor | sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg && echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
 
-    - name: install vagrant and libvirt
-      run: |
-        sudo apt-get update && sudo apt-get install -y vagrant libvirt-daemon-system libvirt-dev
-        sudo chmod 666 /dev/kvm
-        sudo usermod -aG libvirt $(whoami)
-        sudo chmod 666 /var/run/libvirt/libvirt-sock
-        vagrant plugin install vagrant-libvirt
+    - name: install vagrant
+      run: sudo apt-get update && sudo apt-get install -y vagrant virtualbox
 
-    - name: ${{ matrix.target }}
-      run: make smoke-vagrant/${{ matrix.target }}
+    - name: freebsd-amd64
+      run: make smoke-vagrant/freebsd-amd64
 
-    timeout-minutes: 30
+    - name: openbsd-amd64
+      run: make smoke-vagrant/openbsd-amd64
 
-  # linux-386 needs VirtualBox, which conflicts with KVM/libvirt -- isolated job.
-  smoke-extra-virtualbox:
-    if: github.ref == 'refs/heads/master' || contains(github.event.pull_request.labels.*.name, 'smoke-test-extra')
-    name: linux-386
-    runs-on: ubuntu-latest
-    env:
-      VAGRANT_DEFAULT_PROVIDER: virtualbox
-    steps:
-
-    - uses: actions/checkout@v7
-
-    - uses: actions/setup-go@v6
-      with:
-        go-version: '1.25'
-        check-latest: true
-
-    - name: add hashicorp source
-      run: wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor | sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg && echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
-
-    - name: install vagrant and virtualbox
-      run: |
-        sudo apt-get update && sudo apt-get install -y vagrant virtualbox
-        sudo rmmod kvm_amd kvm_intel kvm 2>/dev/null || true
+    - name: netbsd-amd64
+      run: make smoke-vagrant/netbsd-amd64
 
     - name: linux-386
       run: make smoke-vagrant/linux-386
 
+    - name: linux-amd64-ipv6disable
+      run: make smoke-vagrant/linux-amd64-ipv6disable
+
     timeout-minutes: 30
-
-  smoke-windows:
-    if: github.ref == 'refs/heads/master' || contains(github.event.pull_request.labels.*.name, 'smoke-test-extra')
-    name: Run windows smoke test
-    runs-on: windows-latest
-    steps:
-
-    - uses: actions/checkout@v7
-
-    - uses: actions/setup-go@v6
-      with:
-        go-version: '1.25'
-        check-latest: true
-
-    # WSL2 + Ubuntu so the smoke can run a real linux peer with its own
-    # netns. iputils-ping is needed for the in-WSL ping check. WSL1 has no
-    # real kernel and would lack /dev/net/tun, so we have to force WSL2.
-    - uses: Vampire/setup-wsl@v3
-      with:
-        distribution: Ubuntu-24.04
-        additional-packages: iputils-ping iproute2
-
-    # Vampire/setup-wsl provisions WSL1 even when the WSL2 platform is present.
-    # Convert the distro to WSL2 explicitly before we try to use /dev/net/tun.
-    - name: convert distro to WSL2
-      shell: pwsh
-      run: |
-        wsl --set-version Ubuntu-24.04 2
-        wsl --shutdown
-        wsl --list --verbose
-
-    - name: build windows nebula
-      run: make bin-windows
-
-    - name: build linux nebula for WSL
-      shell: bash
-      env:
-        GOOS: linux
-        GOARCH: amd64
-      run: |
-        mkdir -p build/linux-amd64
-        go build -o build/linux-amd64/nebula ./cmd/nebula
-
-    - name: run smoke-windows
-      shell: pwsh
-      working-directory: ./.github/workflows/smoke
-      run: ./smoke-windows.ps1
-
-    timeout-minutes: 15

.github/workflows/smoke.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - uses: actions/checkout@v7
+    - uses: actions/checkout@v4
 
     - uses: actions/setup-go@v6
       with:
@@ -36,14 +36,6 @@ jobs:
       working-directory: ./.github/workflows/smoke
       run: ./smoke.sh
 
-    - name: setup docker image ipv6
-      working-directory: ./.github/workflows/smoke
-      run: SMOKE_OVERLAY_IPV6=1 ./build.sh
-
-    - name: run smoke ipv6
-      working-directory: ./.github/workflows/smoke
-      run: SMOKE_OVERLAY_IPV6=1 ./smoke.sh
-
     - name: setup relay docker image
       working-directory: ./.github/workflows/smoke
       run: ./build-relay.sh

.github/workflows/smoke/build-relay.sh

@@ -16,10 +16,8 @@ relay:
   am_relay: true
 EOF
 
-    # TEST-NET-3 placeholder IPs; smoke-relay.sh seds them to real container IPs.
-    # Mapping: .2 lighthouse1, .3 host2, .4 host3, .5 host4.
-    export LIGHTHOUSES="192.168.100.1 203.0.113.2:4242"
-    export REMOTE_ALLOW_LIST='{"203.0.113.4/32": false, "203.0.113.5/32": false}'
+    export LIGHTHOUSES="192.168.100.1 172.17.0.2:4242"
+    export REMOTE_ALLOW_LIST='{"172.17.0.4/32": false, "172.17.0.5/32": false}'
 
     HOST="host2" ../genconfig.sh >host2.yml <<EOF
 relay:
@@ -27,7 +25,7 @@ relay:
     - 192.168.100.1
 EOF
 
-    export REMOTE_ALLOW_LIST='{"203.0.113.3/32": false}'
+    export REMOTE_ALLOW_LIST='{"172.17.0.3/32": false}'
 
     HOST="host3" ../genconfig.sh >host3.yml
 

.github/workflows/smoke/build.sh

@@ -5,28 +5,9 @@ set -e -x
 rm -rf ./build
 mkdir ./build
 
-if [ "$SMOKE_OVERLAY_IPV6" ]
-then
-    LIGHTHOUSE_NIP="fd00:4242:0:0:0:ffff:c0a8:6401"
-    HOST2_NIP="fd00:4242:0:0:0:ffff:c0a8:6402"
-    HOST3_NIP="fd00:4242:0:0:0:ffff:c0a8:6403"
-    HOST4_NIP="fd00:4242:0:0:0:ffff:c0a8:6404"
-else
-    LIGHTHOUSE_NIP="192.168.100.1"
-    HOST2_NIP="192.168.100.2"
-    HOST3_NIP="192.168.100.3"
-    HOST4_NIP="192.168.100.4"
-fi
-
-# Smoke containers run on a dedicated docker network whose subnet is allocated
-# at smoke time, not known at build time. Configs are written with TEST-NET-3
-# placeholder IPs (RFC 5737) and smoke.sh / smoke-vagrant.sh / smoke-relay.sh
-# sed the real container IPs in before starting nebula.
-#
-# Placeholder mapping (last octet == fixed container slot):
-#   203.0.113.2 -> lighthouse1, 203.0.113.3 -> host2,
-#   203.0.113.4 -> host3,       203.0.113.5 -> host4.
-LIGHTHOUSE_IP="203.0.113.2"
+# TODO: Assumes your docker bridge network is a /24, and the first container that launches will be .1
+# - We could make this better by launching the lighthouse first and then fetching what IP it is.
+NET="$(docker network inspect bridge -f '{{ range .IPAM.Config }}{{ .Subnet }}{{ end }}' | cut -d. -f1-3)"
 
 (
     cd build
@@ -44,24 +25,24 @@ LIGHTHOUSE_IP="203.0.113.2"
         ../genconfig.sh >lighthouse1.yml
 
     HOST="host2" \
-        LIGHTHOUSES="$LIGHTHOUSE_NIP $LIGHTHOUSE_IP:4242" \
+        LIGHTHOUSES="192.168.100.1 $NET.2:4242" \
         ../genconfig.sh >host2.yml
 
     HOST="host3" \
-        LIGHTHOUSES="$LIGHTHOUSE_NIP $LIGHTHOUSE_IP:4242" \
+        LIGHTHOUSES="192.168.100.1 $NET.2:4242" \
         INBOUND='[{"port": "any", "proto": "icmp", "group": "lighthouse"}]' \
         ../genconfig.sh >host3.yml
 
     HOST="host4" \
-        LIGHTHOUSES="$LIGHTHOUSE_NIP $LIGHTHOUSE_IP:4242" \
+        LIGHTHOUSES="192.168.100.1 $NET.2:4242" \
         OUTBOUND='[{"port": "any", "proto": "icmp", "group": "lighthouse"}]' \
         ../genconfig.sh >host4.yml
 
     ../../../../nebula-cert ca -curve "${CURVE:-25519}" -name "Smoke Test"
-    ../../../../nebula-cert sign -name "lighthouse1" -groups "lighthouse,lighthouse1" -ip "$LIGHTHOUSE_NIP/24"
-    ../../../../nebula-cert sign -name "host2" -groups "host,host2" -ip "$HOST2_NIP/24"
-    ../../../../nebula-cert sign -name "host3" -groups "host,host3" -ip "$HOST3_NIP/24"
-    ../../../../nebula-cert sign -name "host4" -groups "host,host4" -ip "$HOST4_NIP/24"
+    ../../../../nebula-cert sign -name "lighthouse1" -groups "lighthouse,lighthouse1" -ip "192.168.100.1/24"
+    ../../../../nebula-cert sign -name "host2" -groups "host,host2" -ip "192.168.100.2/24"
+    ../../../../nebula-cert sign -name "host3" -groups "host,host3" -ip "192.168.100.3/24"
+    ../../../../nebula-cert sign -name "host4" -groups "host,host4" -ip "192.168.100.4/24"
 )
 
 docker build -t "nebula:${NAME:-smoke}" .

.github/workflows/smoke/smoke-relay.sh

@@ -6,8 +6,6 @@ set -o pipefail
 
 mkdir -p logs
 
-NETWORK="nebula-smoke-relay"
-
 cleanup() {
     echo
     echo " *** cleanup"
@@ -18,53 +16,22 @@ cleanup() {
     then
         docker kill lighthouse1 host2 host3 host4
     fi
-    docker network rm "$NETWORK" >/dev/null 2>&1
 }
 
 trap cleanup EXIT
 
-# Create a dedicated smoke network with an explicit subnet (required for --ip
-# below). Probe a short list of candidates so a locally-used range doesn't
-# fail the whole test — we only need one to be free.
-docker network rm "$NETWORK" >/dev/null 2>&1 || true
-for candidate in 172.30.0.0/24 172.31.0.0/24 10.98.0.0/24 10.99.0.0/24 192.168.230.0/24; do
-    if docker network create --subnet "$candidate" "$NETWORK" >/dev/null 2>&1; then
-        break
-    fi
-done
-if ! docker network inspect "$NETWORK" >/dev/null 2>&1; then
-    echo "failed to create $NETWORK: every candidate subnet is in use" >&2
-    exit 1
-fi
-
-# Derive container IPs from the network's assigned subnet. Slots: .2 lighthouse1,
-# .3 host2, .4 host3, .5 host4 — matches the placeholders in build-relay.sh.
-SUBNET="$(docker network inspect -f '{{(index .IPAM.Config 0).Subnet}}' "$NETWORK")"
-PREFIX="${SUBNET%/*}"
-PREFIX="${PREFIX%.*}"
-LIGHTHOUSE_IP="$PREFIX.2"
-HOST2_IP="$PREFIX.3"
-HOST3_IP="$PREFIX.4"
-HOST4_IP="$PREFIX.5"
-
-# Sed the placeholder TEST-NET-3 IPs in the host configs to the real ones.
-for f in build/host2.yml build/host3.yml build/host4.yml; do
-    sed "s|203\.0\.113\.|$PREFIX.|g" "$f" >"$f.tmp"
-    mv "$f.tmp" "$f"
-done
-
 docker run --name lighthouse1 --rm nebula:smoke-relay -config lighthouse1.yml -test
-docker run --name host2 --rm -v "$PWD/build/host2.yml:/nebula/host2.yml:ro" nebula:smoke-relay -config host2.yml -test
-docker run --name host3 --rm -v "$PWD/build/host3.yml:/nebula/host3.yml:ro" nebula:smoke-relay -config host3.yml -test
-docker run --name host4 --rm -v "$PWD/build/host4.yml:/nebula/host4.yml:ro" nebula:smoke-relay -config host4.yml -test
+docker run --name host2 --rm nebula:smoke-relay -config host2.yml -test
+docker run --name host3 --rm nebula:smoke-relay -config host3.yml -test
+docker run --name host4 --rm nebula:smoke-relay -config host4.yml -test
 
-docker run --name lighthouse1 --network "$NETWORK" --ip "$LIGHTHOUSE_IP" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke-relay -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
+docker run --name lighthouse1 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke-relay -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
 sleep 1
-docker run --name host2 --network "$NETWORK" --ip "$HOST2_IP" -v "$PWD/build/host2.yml:/nebula/host2.yml:ro" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke-relay -config host2.yml 2>&1 | tee logs/host2 | sed -u 's/^/  [host2]  /' &
+docker run --name host2 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke-relay -config host2.yml 2>&1 | tee logs/host2 | sed -u 's/^/  [host2]  /' &
 sleep 1
-docker run --name host3 --network "$NETWORK" --ip "$HOST3_IP" -v "$PWD/build/host3.yml:/nebula/host3.yml:ro" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke-relay -config host3.yml 2>&1 | tee logs/host3 | sed -u 's/^/  [host3]  /' &
+docker run --name host3 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke-relay -config host3.yml 2>&1 | tee logs/host3 | sed -u 's/^/  [host3]  /' &
 sleep 1
-docker run --name host4 --network "$NETWORK" --ip "$HOST4_IP" -v "$PWD/build/host4.yml:/nebula/host4.yml:ro" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke-relay -config host4.yml 2>&1 | tee logs/host4 | sed -u 's/^/  [host4]  /' &
+docker run --name host4 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke-relay -config host4.yml 2>&1 | tee logs/host4 | sed -u 's/^/  [host4]  /' &
 sleep 1
 
 set +x
@@ -109,13 +76,7 @@ docker exec host4 sh -c 'kill 1'
 docker exec host3 sh -c 'kill 1'
 docker exec host2 sh -c 'kill 1'
 docker exec lighthouse1 sh -c 'kill 1'
-
-# Wait up to 30s for all backgrounded jobs to exit rather than relying on a
-# fixed sleep.
-for _ in $(seq 1 30); do
-    [ -z "$(jobs -r)" ] && break
-    sleep 1
-done
+sleep 5
 
 if [ "$(jobs -r)" ]
 then

.github/workflows/smoke/smoke-vagrant.sh

@@ -8,8 +8,6 @@ export VAGRANT_CWD="$PWD/vagrant-$1"
 
 mkdir -p logs
 
-NETWORK="nebula-smoke"
-
 cleanup() {
     echo
     echo " *** cleanup"
@@ -21,51 +19,21 @@ cleanup() {
         docker kill lighthouse1 host2
     fi
     vagrant destroy -f
-    docker network rm "$NETWORK" >/dev/null 2>&1
 }
 
 trap cleanup EXIT
 
-# Create a dedicated smoke network with an explicit subnet (required for --ip
-# below). Probe a short list of candidates so a locally-used range doesn't
-# fail the whole test — we only need one to be free.
-docker network rm "$NETWORK" >/dev/null 2>&1 || true
-for candidate in 172.30.0.0/24 172.31.0.0/24 10.98.0.0/24 10.99.0.0/24 192.168.230.0/24; do
-    if docker network create --subnet "$candidate" "$NETWORK" >/dev/null 2>&1; then
-        break
-    fi
-done
-if ! docker network inspect "$NETWORK" >/dev/null 2>&1; then
-    echo "failed to create $NETWORK: every candidate subnet is in use" >&2
-    exit 1
-fi
-
-# Derive container IPs from the network's assigned subnet. Slots: .2 lighthouse1,
-# .3 host2 — matches the placeholders in build.sh.
-SUBNET="$(docker network inspect -f '{{(index .IPAM.Config 0).Subnet}}' "$NETWORK")"
-PREFIX="${SUBNET%/*}"
-PREFIX="${PREFIX%.*}"
-LIGHTHOUSE_IP="$PREFIX.2"
-HOST2_IP="$PREFIX.3"
-
-# Sed the placeholder TEST-NET-3 IPs in the host configs to the real ones.
-# This must happen before `vagrant up` rsyncs build/ into the VM for host3.
-for f in build/host2.yml build/host3.yml; do
-    sed "s|203\.0\.113\.|$PREFIX.|g" "$f" >"$f.tmp"
-    mv "$f.tmp" "$f"
-done
-
 CONTAINER="nebula:${NAME:-smoke}"
 
 docker run --name lighthouse1 --rm "$CONTAINER" -config lighthouse1.yml -test
-docker run --name host2 --rm -v "$PWD/build/host2.yml:/nebula/host2.yml:ro" "$CONTAINER" -config host2.yml -test
+docker run --name host2 --rm "$CONTAINER" -config host2.yml -test
 
 vagrant up
 vagrant ssh -c "cd /nebula && /nebula/$1-nebula -config host3.yml -test" -- -T
 
-docker run --name lighthouse1 --network "$NETWORK" --ip "$LIGHTHOUSE_IP" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
+docker run --name lighthouse1 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
 sleep 1
-docker run --name host2 --network "$NETWORK" --ip "$HOST2_IP" -v "$PWD/build/host2.yml:/nebula/host2.yml:ro" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host2.yml 2>&1 | tee logs/host2 | sed -u 's/^/  [host2]  /' &
+docker run --name host2 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host2.yml 2>&1 | tee logs/host2 | sed -u 's/^/  [host2]  /' &
 sleep 1
 vagrant ssh -c "cd /nebula && sudo sh -c 'echo \$\$ >/nebula/pid && exec /nebula/$1-nebula -config host3.yml'" 2>&1 -- -T | tee logs/host3 | sed -u 's/^/  [host3]  /' &
 sleep 15
@@ -128,14 +96,7 @@ vagrant ssh -c "ping -c1 192.168.100.2" -- -T
 vagrant ssh -c "sudo xargs kill </nebula/pid" -- -T
 docker exec host2 sh -c 'kill 1'
 docker exec lighthouse1 sh -c 'kill 1'
-
-# Wait up to 30s for all backgrounded jobs to exit. vagrant ssh in particular
-# takes a beat to tear down after nebula exits on the VM, so a fixed sleep is
-# racy.
-for _ in $(seq 1 30); do
-    [ -z "$(jobs -r)" ] && break
-    sleep 1
-done
+sleep 1
 
 if [ "$(jobs -r)" ]
 then

.github/workflows/smoke/smoke-windows.ps1

@@ -1,272 +0,0 @@
-#!/usr/bin/env pwsh
-# Windows smoke test for the nebula tun + UDP + NLM code paths.
-#
-# Topology:
-#   - lighthouse runs natively on the Windows host (wintun + windows UDP)
-#   - peer runs inside WSL2 (Linux build of nebula, /dev/net/tun)
-#
-# WSL2 gives us a real netns boundary so the loopback fast-path on Windows
-# does not short-circuit the overlay -- when WSL pings the lighthouse VPN IP,
-# Linux has no idea that IP is local to the Windows host, so the packet is
-# forced through nebula. Same in reverse.
-
-$ErrorActionPreference = 'Stop'
-
-# wsl.exe emits UTF-16 LE by default which PowerShell reads as bytes, mangling
-# every captured string. WSL_UTF8 makes wsl.exe emit UTF-8 instead.
-$env:WSL_UTF8 = '1'
-
-$RepoRoot = Resolve-Path "$PSScriptRoot\..\..\.."
-$Nebula = Join-Path $RepoRoot 'nebula.exe'
-$NebulaCert = Join-Path $RepoRoot 'nebula-cert.exe'
-$NebulaLinux = Join-Path $RepoRoot 'build\linux-amd64\nebula'
-
-if (-not (Test-Path $Nebula)) { throw "missing $Nebula; run 'make bin-windows' first" }
-if (-not (Test-Path $NebulaCert)) { throw "missing $NebulaCert; run 'make bin-windows' first" }
-if (-not (Test-Path $NebulaLinux)) { throw "missing $NebulaLinux; build the linux nebula first" }
-
-# Matches the distro installed by Vampire/setup-wsl in smoke-extra.yml.
-$Distro = 'Ubuntu-24.04'
-$listed = (wsl --list --quiet 2>$null) -join "`n"
-if ($listed -notmatch [regex]::Escape($Distro)) {
-    throw "WSL distro $Distro not registered. Got: $listed"
-}
-Write-Host "Using WSL distro: $Distro"
-
-# Windows host as seen from inside WSL: WSL's default-route gateway. We extract
-# it with a regex rather than awk fields so PowerShell does not eat any '$N'
-# tokens, and tabs/double-spaces in `ip route` output do not confuse a cut.
-$ipCmd = 'ip route show default | grep -oE "([0-9]+\.){3}[0-9]+" | head -1'
-$WindowsIp = (wsl -d $Distro -- bash -c $ipCmd).Trim()
-if (-not $WindowsIp) { throw "could not determine Windows host IP from WSL" }
-Write-Host "Windows host IP from WSL: $WindowsIp"
-
-$WorkDir = Join-Path $env:TEMP 'nebula-smoke-windows'
-if (Test-Path $WorkDir) { Remove-Item -Recurse -Force $WorkDir }
-New-Item -ItemType Directory -Path $WorkDir | Out-Null
-
-$WslDir = '/tmp/nebula-smoke'
-wsl -d $Distro -- bash -c "rm -rf $WslDir && mkdir -p $WslDir" | Out-Null
-
-$DevName = 'nebula-smoke'
-$Ip1 = '192.168.241.1'
-$Ip2 = '192.168.241.2'
-$Port = 4242
-
-& $NebulaCert ca -name 'smoke-ca' -out-crt "$WorkDir\ca.crt" -out-key "$WorkDir\ca.key"
-if ($LASTEXITCODE -ne 0) { throw "nebula-cert ca failed (exit $LASTEXITCODE)" }
-
-& $NebulaCert sign -name 'lighthouse' -networks "$Ip1/24" -ca-crt "$WorkDir\ca.crt" -ca-key "$WorkDir\ca.key" -out-crt "$WorkDir\lighthouse.crt" -out-key "$WorkDir\lighthouse.key"
-if ($LASTEXITCODE -ne 0) { throw "nebula-cert sign lighthouse failed (exit $LASTEXITCODE)" }
-
-& $NebulaCert sign -name 'peer' -networks "$Ip2/24" -ca-crt "$WorkDir\ca.crt" -ca-key "$WorkDir\ca.key" -out-crt "$WorkDir\peer.crt" -out-key "$WorkDir\peer.key"
-if ($LASTEXITCODE -ne 0) { throw "nebula-cert sign peer failed (exit $LASTEXITCODE)" }
-
-# Windows lighthouse config.
-@"
-pki:
-  ca: $WorkDir\ca.crt
-  cert: $WorkDir\lighthouse.crt
-  key: $WorkDir\lighthouse.key
-static_host_map: {}
-lighthouse:
-  am_lighthouse: true
-  interval: 60
-  hosts: []
-listen:
-  host: 0.0.0.0
-  port: $Port
-tun:
-  disabled: false
-  dev: $DevName
-  drop_local_broadcast: false
-  drop_multicast: false
-  tx_queue: 500
-  mtu: 1300
-  network_category: private
-logging:
-  level: info
-  format: text
-firewall:
-  outbound_action: drop
-  inbound_action: drop
-  conntrack:
-    tcp_timeout: 12m
-    udp_timeout: 3m
-    default_timeout: 10m
-  outbound:
-    - port: any
-      proto: any
-      host: any
-  inbound:
-    - port: any
-      proto: any
-      host: any
-"@ | Out-File -FilePath "$WorkDir\lighthouse.yml" -Encoding utf8
-
-# WSL peer config (paths are POSIX, deliberately).
-@"
-pki:
-  ca: $WslDir/ca.crt
-  cert: $WslDir/peer.crt
-  key: $WslDir/peer.key
-static_host_map:
-  "${Ip1}": ["${WindowsIp}:$Port"]
-lighthouse:
-  am_lighthouse: false
-  interval: 60
-  hosts:
-    - "${Ip1}"
-listen:
-  host: 0.0.0.0
-  port: 0
-tun:
-  disabled: false
-  dev: nebula1
-  drop_local_broadcast: false
-  drop_multicast: false
-  tx_queue: 500
-  mtu: 1300
-logging:
-  level: info
-  format: text
-firewall:
-  outbound_action: drop
-  inbound_action: drop
-  conntrack:
-    tcp_timeout: 12m
-    udp_timeout: 3m
-    default_timeout: 10m
-  outbound:
-    - port: any
-      proto: any
-      host: any
-  inbound:
-    - port: any
-      proto: any
-      host: any
-"@ | Out-File -FilePath "$WorkDir\peer.yml" -Encoding utf8
-
-# Stage WSL artifacts. Convert Windows paths to WSL paths ourselves rather than
-# calling `wslpath`, because PowerShell's argument-passing to external EXEs
-# strips backslashes from path arguments in ways that are hard to escape around.
-function ConvertTo-WslPath {
-    param([string]$WindowsPath)
-    if ($WindowsPath -notmatch '^([A-Za-z]):\\(.*)$') {
-        throw "cannot convert path to WSL: $WindowsPath"
-    }
-    return "/mnt/$($matches[1].ToLower())/$($matches[2].Replace('\','/'))"
-}
-
-$WslWorkDir = ConvertTo-WslPath $WorkDir
-$WslNebulaPath = ConvertTo-WslPath $NebulaLinux
-wsl -d $Distro -- bash -c "cp '$WslWorkDir/ca.crt' '$WslWorkDir/peer.crt' '$WslWorkDir/peer.key' '$WslWorkDir/peer.yml' $WslDir/ && cp '$WslNebulaPath' $WslDir/nebula && chmod +x $WslDir/nebula"
-
-# Make sure WSL has tun support and /dev/net/tun is usable before starting
-# nebula. Diagnostics first so a fail here points at the real problem (e.g.
-# WSL1 distros do not have a real kernel and will not have tun).
-Write-Host '=== WSL diagnostic ==='
-wsl --version 2>&1 | Out-Host
-wsl --list --verbose 2>&1 | Out-Host
-wsl -d $Distro -u root -- uname -a | Out-Host
-wsl -d $Distro -u root -- bash -c "modprobe tun 2>&1 || true; mkdir -p /dev/net; [ -c /dev/net/tun ] || mknod /dev/net/tun c 10 200; chmod 600 /dev/net/tun; ls -l /dev/net/tun"
-if ($LASTEXITCODE -ne 0) { throw "failed to prepare /dev/net/tun in WSL (TUN support missing?)" }
-
-# Deliberately no New-NetFirewallRule calls here -- nebula's windows_bypass_wdf
-# feature is supposed to install WFP permit filters that let inbound traffic
-# through Windows Defender Firewall on its own. If this smoke regresses, that
-# feature regressed.
-
-$lhOut = Join-Path $WorkDir 'lighthouse.out.log'
-$lhErr = Join-Path $WorkDir 'lighthouse.err.log'
-$lhProc = Start-Process -FilePath $Nebula -ArgumentList @('-config', "$WorkDir\lighthouse.yml") `
-    -PassThru -NoNewWindow `
-    -RedirectStandardOutput $lhOut `
-    -RedirectStandardError $lhErr
-
-# Run nebula in WSL as root with no sudo + no shell wrapper. PowerShell's
-# Start-Process arg quoting mangles `bash -c "..."` strings that contain
-# spaces/redirections, so we skip bash entirely and let Start-Process do the
-# stdout/stderr capture itself.
-$peerOut = Join-Path $WorkDir 'peer.out.log'
-$peerErr = Join-Path $WorkDir 'peer.err.log'
-$peerProc = Start-Process -FilePath 'wsl' `
-    -ArgumentList @('-d', $Distro, '-u', 'root', '--', "$WslDir/nebula", '-config', "$WslDir/peer.yml") `
-    -PassThru -NoNewWindow `
-    -RedirectStandardOutput $peerOut `
-    -RedirectStandardError $peerErr
-
-function Wait-Until {
-    param([scriptblock]$Predicate, [int]$TimeoutSec, [string]$What)
-    $deadline = (Get-Date).AddSeconds($TimeoutSec)
-    while ((Get-Date) -lt $deadline) {
-        if (& $Predicate) { return }
-        Start-Sleep -Milliseconds 500
-    }
-    throw "timed out waiting for: $What"
-}
-
-try {
-    Wait-Until -TimeoutSec 30 -What "windows wintun adapter $DevName with NetworkCategory=Private" -Predicate {
-        if ($lhProc.HasExited) { throw "lighthouse exited (code $($lhProc.ExitCode)) before tun was ready" }
-        $p = Get-NetConnectionProfile -InterfaceAlias $DevName -ErrorAction SilentlyContinue
-        $p -and ("$($p.NetworkCategory)" -ieq 'Private')
-    }
-    Write-Host "OK: $DevName NetworkCategory=Private"
-
-    Wait-Until -TimeoutSec 30 -What "WSL nebula1 with $Ip2" -Predicate {
-        if ($peerProc.HasExited) { throw "peer exited (code $($peerProc.ExitCode)) before tun was ready" }
-        $r = wsl -d $Distro -u root -- bash -c "ip -o addr show nebula1 2>/dev/null | grep -q 'inet $Ip2' && echo yes"
-        ("$r").Trim() -eq 'yes'
-    }
-    Write-Host "OK: WSL nebula1 has $Ip2"
-
-    Wait-Until -TimeoutSec 30 -What "ping from WSL peer to windows lighthouse ($Ip1)" -Predicate {
-        if ($peerProc.HasExited) { throw "peer exited (code $($peerProc.ExitCode)) before ping succeeded" }
-        $r = wsl -d $Distro -u root -- bash -c "ping -c1 -W1 $Ip1 >/dev/null 2>&1 && echo OK"
-        ("$r").Trim() -eq 'OK'
-    }
-    Write-Host "OK: WSL peer -> windows lighthouse"
-
-    Wait-Until -TimeoutSec 30 -What "ping from windows lighthouse to WSL peer ($Ip2)" -Predicate {
-        $null = & ping.exe -n 1 -w 1000 $Ip2
-        $LASTEXITCODE -eq 0
-    }
-    Write-Host "OK: windows lighthouse -> WSL peer"
-
-    Write-Host ''
-    Write-Host 'All smoke checks passed.'
-}
-catch {
-    Write-Host ''
-    Write-Host '=== lighthouse stdout ==='
-    Get-Content $lhOut -ErrorAction SilentlyContinue | Out-Host
-    Write-Host '=== lighthouse stderr ==='
-    Get-Content $lhErr -ErrorAction SilentlyContinue | Out-Host
-    Write-Host '=== peer stdout ==='
-    Get-Content $peerOut -ErrorAction SilentlyContinue | Out-Host
-    Write-Host '=== peer stderr ==='
-    Get-Content $peerErr -ErrorAction SilentlyContinue | Out-Host
-    Write-Host '=== nebula WFP filters ==='
-    # Dump nebula-installed filters so we can verify they got registered with
-    # the conditions we expect.
-    $wfpDump = Join-Path $WorkDir 'wfp.xml'
-    netsh wfp show filters file=$wfpDump 2>&1 | Out-Null
-    if (Test-Path $wfpDump) {
-        Select-String -Path $wfpDump -Pattern 'Nebula' -Context 0,80 -ErrorAction SilentlyContinue | Out-Host
-    }
-    throw
-}
-finally {
-    if (-not $lhProc.HasExited) {
-        Stop-Process -Id $lhProc.Id -Force -ErrorAction SilentlyContinue
-        $lhProc.WaitForExit(5000) | Out-Null
-    }
-    wsl -d $Distro -u root -- bash -c "pkill -f $WslDir/nebula 2>/dev/null; true" | Out-Null
-    # pkill returns 1 when no match and wsl propagates that; the smoke is done
-    # so we don't want it to leak into the script's exit code.
-    $global:LASTEXITCODE = 0
-    if ($peerProc -and -not $peerProc.HasExited) {
-        Stop-Process -Id $peerProc.Id -Force -ErrorAction SilentlyContinue
-    }
-}

.github/workflows/smoke/smoke.sh

@@ -6,8 +6,6 @@ set -o pipefail
 
 mkdir -p logs
 
-NETWORK="nebula-smoke"
-
 cleanup() {
     echo
     echo " *** cleanup"
@@ -18,103 +16,57 @@ cleanup() {
     then
         docker kill lighthouse1 host2 host3 host4
     fi
-    docker network rm "$NETWORK" >/dev/null 2>&1
 }
 
 trap cleanup EXIT
 
-# Create a dedicated smoke network with an explicit subnet (required for --ip
-# below). Probe a short list of candidates so a locally-used range doesn't
-# fail the whole test — we only need one to be free.
-docker network rm "$NETWORK" >/dev/null 2>&1 || true
-for candidate in 172.30.0.0/24 172.31.0.0/24 10.98.0.0/24 10.99.0.0/24 192.168.230.0/24; do
-    if docker network create --subnet "$candidate" "$NETWORK" >/dev/null 2>&1; then
-        break
-    fi
-done
-if ! docker network inspect "$NETWORK" >/dev/null 2>&1; then
-    echo "failed to create $NETWORK: every candidate subnet is in use" >&2
-    exit 1
-fi
-
-# Derive container IPs from the network's assigned subnet. Slots: .2 lighthouse1,
-# .3 host2, .4 host3, .5 host4 — matches the placeholders in build.sh.
-SUBNET="$(docker network inspect -f '{{(index .IPAM.Config 0).Subnet}}' "$NETWORK")"
-PREFIX="${SUBNET%/*}"
-PREFIX="${PREFIX%.*}"
-LIGHTHOUSE_IP="$PREFIX.2"
-HOST2_IP="$PREFIX.3"
-HOST3_IP="$PREFIX.4"
-HOST4_IP="$PREFIX.5"
-
-if [ "$SMOKE_OVERLAY_IPV6" ]
-then
-    LIGHTHOUSE_NIP="fd00:4242:0:0:0:ffff:c0a8:6401"
-    HOST2_NIP="fd00:4242:0:0:0:ffff:c0a8:6402"
-    HOST3_NIP="fd00:4242:0:0:0:ffff:c0a8:6403"
-    HOST4_NIP="fd00:4242:0:0:0:ffff:c0a8:6404"
-else
-    LIGHTHOUSE_NIP="192.168.100.1"
-    HOST2_NIP="192.168.100.2"
-    HOST3_NIP="192.168.100.3"
-    HOST4_NIP="192.168.100.4"
-fi
-
-# Sed the placeholder TEST-NET-3 IPs in the host configs to the real ones.
-# build/lighthouse1.yml has no IPs to rewrite so it's skipped.
-for f in build/host2.yml build/host3.yml build/host4.yml; do
-    sed "s|203\.0\.113\.|$PREFIX.|g" "$f" >"$f.tmp"
-    mv "$f.tmp" "$f"
-done
-
 CONTAINER="nebula:${NAME:-smoke}"
 
 docker run --name lighthouse1 --rm "$CONTAINER" -config lighthouse1.yml -test
-docker run --name host2 --rm -v "$PWD/build/host2.yml:/nebula/host2.yml:ro" "$CONTAINER" -config host2.yml -test
-docker run --name host3 --rm -v "$PWD/build/host3.yml:/nebula/host3.yml:ro" "$CONTAINER" -config host3.yml -test
-docker run --name host4 --rm -v "$PWD/build/host4.yml:/nebula/host4.yml:ro" "$CONTAINER" -config host4.yml -test
+docker run --name host2 --rm "$CONTAINER" -config host2.yml -test
+docker run --name host3 --rm "$CONTAINER" -config host3.yml -test
+docker run --name host4 --rm "$CONTAINER" -config host4.yml -test
 
-docker run --name lighthouse1 --network "$NETWORK" --ip "$LIGHTHOUSE_IP" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
+docker run --name lighthouse1 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
 sleep 1
-docker run --name host2 --network "$NETWORK" --ip "$HOST2_IP" -v "$PWD/build/host2.yml:/nebula/host2.yml:ro" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host2.yml 2>&1 | tee logs/host2 | sed -u 's/^/  [host2]  /' &
+docker run --name host2 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host2.yml 2>&1 | tee logs/host2 | sed -u 's/^/  [host2]  /' &
 sleep 1
-docker run --name host3 --network "$NETWORK" --ip "$HOST3_IP" -v "$PWD/build/host3.yml:/nebula/host3.yml:ro" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host3.yml 2>&1 | tee logs/host3 | sed -u 's/^/  [host3]  /' &
+docker run --name host3 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host3.yml 2>&1 | tee logs/host3 | sed -u 's/^/  [host3]  /' &
 sleep 1
-docker run --name host4 --network "$NETWORK" --ip "$HOST4_IP" -v "$PWD/build/host4.yml:/nebula/host4.yml:ro" --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host4.yml 2>&1 | tee logs/host4 | sed -u 's/^/  [host4]  /' &
+docker run --name host4 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host4.yml 2>&1 | tee logs/host4 | sed -u 's/^/  [host4]  /' &
 sleep 1
 
 # grab tcpdump pcaps for debugging
-docker exec lighthouse1 tcpdump -i tun0 -q -w - -U 2>logs/lighthouse1.inside.log >logs/lighthouse1.inside.pcap &
+docker exec lighthouse1 tcpdump -i nebula1 -q -w - -U 2>logs/lighthouse1.inside.log >logs/lighthouse1.inside.pcap &
 docker exec lighthouse1 tcpdump -i eth0 -q -w - -U 2>logs/lighthouse1.outside.log >logs/lighthouse1.outside.pcap &
-docker exec host2 tcpdump -i tun0 -q -w - -U 2>logs/host2.inside.log >logs/host2.inside.pcap &
+docker exec host2 tcpdump -i nebula1 -q -w - -U 2>logs/host2.inside.log >logs/host2.inside.pcap &
 docker exec host2 tcpdump -i eth0 -q -w - -U 2>logs/host2.outside.log >logs/host2.outside.pcap &
-docker exec host3 tcpdump -i tun0 -q -w - -U 2>logs/host3.inside.log >logs/host3.inside.pcap &
+docker exec host3 tcpdump -i nebula1 -q -w - -U 2>logs/host3.inside.log >logs/host3.inside.pcap &
 docker exec host3 tcpdump -i eth0 -q -w - -U 2>logs/host3.outside.log >logs/host3.outside.pcap &
-docker exec host4 tcpdump -i tun0 -q -w - -U 2>logs/host4.inside.log >logs/host4.inside.pcap &
+docker exec host4 tcpdump -i nebula1 -q -w - -U 2>logs/host4.inside.log >logs/host4.inside.pcap &
 docker exec host4 tcpdump -i eth0 -q -w - -U 2>logs/host4.outside.log >logs/host4.outside.pcap &
 
-docker exec host2 ncat -nklv 2000 &
-docker exec host3 ncat -nklv 2000 &
-docker exec host4 ncat -e '/usr/bin/echo helloagainfromhost4' -nkluv 4000 &
-docker exec host2 ncat -e '/usr/bin/echo host2' -nkluv 3000 &
-docker exec host3 ncat -e '/usr/bin/echo host3' -nkluv 3000 &
+docker exec host2 ncat -nklv 0.0.0.0 2000 &
+docker exec host3 ncat -nklv 0.0.0.0 2000 &
+docker exec host2 ncat -e '/usr/bin/echo host2' -nkluv 0.0.0.0 3000 &
+docker exec host3 ncat -e '/usr/bin/echo host3' -nkluv 0.0.0.0 3000 &
 
 set +x
 echo
 echo " *** Testing ping from lighthouse1"
 echo
 set -x
-docker exec lighthouse1 ping -c1 $HOST2_NIP
-docker exec lighthouse1 ping -c1 $HOST3_NIP
+docker exec lighthouse1 ping -c1 192.168.100.2
+docker exec lighthouse1 ping -c1 192.168.100.3
 
 set +x
 echo
 echo " *** Testing ping from host2"
 echo
 set -x
-docker exec host2 ping -c1 $LIGHTHOUSE_NIP
+docker exec host2 ping -c1 192.168.100.1
 # Should fail because not allowed by host3 inbound firewall
-! docker exec host2 ping -c1 $HOST3_NIP -w5 || exit 1
+! docker exec host2 ping -c1 192.168.100.3 -w5 || exit 1
 
 set +x
 echo
@@ -122,34 +74,34 @@ echo " *** Testing ncat from host2"
 echo
 set -x
 # Should fail because not allowed by host3 inbound firewall
-! docker exec host2 ncat -nzv -w5 $HOST3_NIP 2000 || exit 1
-! docker exec host2 ncat -nzuv -w5 $HOST3_NIP 3000 | grep -q host3 || exit 1
+! docker exec host2 ncat -nzv -w5 192.168.100.3 2000 || exit 1
+! docker exec host2 ncat -nzuv -w5 192.168.100.3 3000 | grep -q host3 || exit 1
 
 set +x
 echo
 echo " *** Testing ping from host3"
 echo
 set -x
-docker exec host3 ping -c1 $LIGHTHOUSE_NIP
-docker exec host3 ping -c1 $HOST2_NIP
+docker exec host3 ping -c1 192.168.100.1
+docker exec host3 ping -c1 192.168.100.2
 
 set +x
 echo
 echo " *** Testing ncat from host3"
 echo
 set -x
-docker exec host3 ncat -nzv -w5 $HOST2_NIP 2000
-docker exec host3 ncat -nzuv -w5 $HOST2_NIP 3000 | grep -q host2
+docker exec host3 ncat -nzv -w5 192.168.100.2 2000
+docker exec host3 ncat -nzuv -w5 192.168.100.2 3000 | grep -q host2
 
 set +x
 echo
 echo " *** Testing ping from host4"
 echo
 set -x
-docker exec host4 ping -c1 $LIGHTHOUSE_NIP
+docker exec host4 ping -c1 192.168.100.1
 # Should fail because not allowed by host4 outbound firewall
-! docker exec host4 ping -c1 $HOST2_NIP -w5 || exit 1
-! docker exec host4 ping -c1 $HOST3_NIP -w5 || exit 1
+! docker exec host4 ping -c1 192.168.100.2 -w5 || exit 1
+! docker exec host4 ping -c1 192.168.100.3 -w5 || exit 1
 
 set +x
 echo
@@ -157,34 +109,27 @@ echo " *** Testing ncat from host4"
 echo
 set -x
 # Should fail because not allowed by host4 outbound firewall
-! docker exec host4 ncat -nzv -w5 $HOST2_NIP 2000 || exit 1
-! docker exec host4 ncat -nzv -w5 $HOST3_NIP 2000 || exit 1
-! docker exec host4 ncat -nzuv -w5 $HOST2_NIP 3000 | grep -q host2 || exit 1
-! docker exec host4 ncat -nzuv -w5 $HOST3_NIP 3000 | grep -q host3 || exit 1
+! docker exec host4 ncat -nzv -w5 192.168.100.2 2000 || exit 1
+! docker exec host4 ncat -nzv -w5 192.168.100.3 2000 || exit 1
+! docker exec host4 ncat -nzuv -w5 192.168.100.2 3000 | grep -q host2 || exit 1
+! docker exec host4 ncat -nzuv -w5 192.168.100.3 3000 | grep -q host3 || exit 1
 
 set +x
 echo
 echo " *** Testing conntrack"
 echo
 set -x
-
-# host4's outbound firewall only allows ICMP to the lighthouse, so host4
-# cannot initiate UDP to host2. Once host2 initiates a flow to host4:4000,
-# conntrack must let host4's listener reply on that flow. If it doesn't,
-# the echo back from host4 never reaches host2.
-docker exec host2 sh -c "(/usr/bin/echo host2; sleep 2) | ncat -nuv $HOST4_NIP 4000" | grep -q helloagainfromhost4
+# host2 can ping host3 now that host3 pinged it first
+docker exec host2 ping -c1 192.168.100.3
+# host4 can ping host2 once conntrack established
+docker exec host2 ping -c1 192.168.100.4
+docker exec host4 ping -c1 192.168.100.2
 
 docker exec host4 sh -c 'kill 1'
 docker exec host3 sh -c 'kill 1'
 docker exec host2 sh -c 'kill 1'
 docker exec lighthouse1 sh -c 'kill 1'
-
-# Wait up to 30s for all backgrounded jobs to exit rather than relying on a
-# fixed sleep.
-for _ in $(seq 1 30); do
-    [ -z "$(jobs -r)" ] && break
-    sleep 1
-done
+sleep 5
 
 if [ "$(jobs -r)" ]
 then

.github/workflows/smoke/vagrant-linux-amd64-ipv6disable/Vagrantfile

@@ -1,7 +1,7 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 Vagrant.configure("2") do |config|
-  config.vm.box = "bento/ubuntu-24.04"
+  config.vm.box = "ubuntu/jammy64"
 
   config.vm.synced_folder "../build", "/nebula"
 

.github/workflows/smoke/vagrant-netbsd-amd64/Vagrantfile

@@ -1,7 +1,7 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 Vagrant.configure("2") do |config|
-  config.vm.box = "DefinedNet/netbsd10"
+  config.vm.box = "generic/netbsd9"
 
   config.vm.synced_folder "../build", "/nebula", type: "rsync"
 end

.github/workflows/smoke/vagrant-openbsd-amd64/Vagrantfile

@@ -1,7 +1,7 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 Vagrant.configure("2") do |config|
-  config.vm.box = "DefinedNet/openbsd78"
+  config.vm.box = "generic/openbsd7"
 
   config.vm.synced_folder "../build", "/nebula", type: "rsync"
 end

.github/workflows/test.yml

@@ -13,72 +13,12 @@ on:
       - 'go.sum'
 jobs:
 
-  static:
-    name: Static checks
+  test-linux:
+    name: Build all and test on ubuntu-linux
     runs-on: ubuntu-latest
     steps:
 
-    - uses: actions/checkout@v7
-
-    - uses: actions/setup-go@v6
-      with:
-        go-version: '1.25'
-        check-latest: true
-
-    - name: Install goimports
-      run: go install golang.org/x/tools/cmd/goimports@latest
-
-    - name: gofmt
-      run: |
-        if [ "$(find . -iname '*.go' | grep -v '\.pb\.go$' | xargs goimports -l)" ]
-        then
-          find . -iname '*.go' | grep -v '\.pb\.go$' | xargs goimports -d
-          exit 1
-        fi
-
-    - name: Vet
-      run: make vet
-
-    - name: golangci-lint
-      uses: golangci/golangci-lint-action@v9
-      with:
-        version: v2.5
-
-  test:
-    name: Test ${{ matrix.name }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-        - name: linux
-          os: ubuntu-latest
-          build-cmd: go build ./cmd/nebula ./cmd/nebula-cert
-          test-cmd: make test
-          e2e-cmd: make e2evv
-        - name: linux-boringcrypto
-          os: ubuntu-latest
-          build-cmd: make bin-boringcrypto
-          test-cmd: make test-boringcrypto
-          e2e-cmd: make e2e GOEXPERIMENT=boringcrypto CGO_ENABLED=1 TEST_ENV="TEST_LOGS=1" TEST_FLAGS="-v -ldflags -checklinkname=0"
-        - name: linux-pkcs11
-          os: ubuntu-latest
-          build-cmd: make bin-pkcs11
-          test-cmd: make test-pkcs11
-          e2e-cmd: ''
-        - name: macos
-          os: macos-latest
-          build-cmd: go build ./cmd/nebula ./cmd/nebula-cert
-          test-cmd: make test
-          e2e-cmd: make e2evv
-        - name: windows
-          os: windows-latest
-          build-cmd: go build ./cmd/nebula ./cmd/nebula-cert
-          test-cmd: make test
-          e2e-cmd: make e2evv
-    steps:
-
-    - uses: actions/checkout@v7
+    - uses: actions/checkout@v4
 
     - uses: actions/setup-go@v6
       with:
@@ -86,65 +26,107 @@ jobs:
         check-latest: true
 
     - name: Build
-      run: ${{ matrix.build-cmd }}
+      run: make all
 
-    - name: Cross-build darwin-amd64
-      if: matrix.name == 'macos'
-      run: GOARCH=amd64 go build -o /tmp/nebula-amd64 ./cmd/nebula && GOARCH=amd64 go build -o /tmp/nebula-cert-amd64 ./cmd/nebula-cert
+    - name: Vet
+      run: make vet
+
+    - name: golangci-lint
+      uses: golangci/golangci-lint-action@v8
+      with:
+        version: v2.5
 
     - name: Test
-      run: ${{ matrix.test-cmd }}
+      run: make test
 
     - name: End 2 end
-      if: matrix.e2e-cmd != ''
-      run: ${{ matrix.e2e-cmd }}
+      run: make e2evv
 
-    - uses: actions/upload-artifact@v7
-      if: matrix.e2e-cmd != '' && always()
+    - name: Build test mobile
+      run: make build-test-mobile
+
+    - uses: actions/upload-artifact@v4
       with:
-        name: e2e packet flow ${{ matrix.name }}
-        path: e2e/mermaid/
+        name: e2e packet flow linux-latest
+        path: e2e/mermaid/linux-latest
         if-no-files-found: warn
 
-  cross-build:
-    name: Cross-build ${{ matrix.name }}
+  test-linux-boringcrypto:
+    name: Build and test on linux with boringcrypto
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-        - {name: linux-arm,   make-target: all-cross-linux-arm}
-        - {name: linux-mips,  make-target: all-cross-linux-mips}
-        - {name: linux-other, make-target: all-cross-linux-other}
-        - {name: freebsd,     make-target: all-freebsd}
-        - {name: openbsd,     make-target: all-openbsd}
-        - {name: netbsd,      make-target: all-netbsd}
-        - {name: windows,     make-target: all-cross-windows}
-        - {name: mobile,      make-target: build-test-mobile}
     steps:
 
-    - uses: actions/checkout@v7
+    - uses: actions/checkout@v4
 
     - uses: actions/setup-go@v6
       with:
         go-version: '1.25'
         check-latest: true
 
-    - name: Build ${{ matrix.name }}
-      run: make -j"$(nproc)" ${{ matrix.make-target }}
+    - name: Build
+      run: make bin-boringcrypto
 
-  finish:
-    name: CI status
-    if: always()
-    needs: [static, test, cross-build]
+    - name: Test
+      run: make test-boringcrypto
+
+    - name: End 2 end
+      run: make e2e GOEXPERIMENT=boringcrypto CGO_ENABLED=1 TEST_ENV="TEST_LOGS=1" TEST_FLAGS="-v -ldflags -checklinkname=0"
+
+  test-linux-pkcs11:
+    name: Build and test on linux with pkcs11
     runs-on: ubuntu-latest
     steps:
 
-    - name: Fail if any upstream job failed
-      if: contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')
-      run: |
-        echo "upstream results: ${{ toJSON(needs) }}"
-        exit 1
+    - uses: actions/checkout@v4
 
-    - name: All upstream jobs passed
-      run: echo "ok"
+    - uses: actions/setup-go@v6
+      with:
+        go-version: '1.25'
+        check-latest: true
+
+    - name: Build
+      run: make bin-pkcs11
+
+    - name: Test
+      run: make test-pkcs11
+
+  test:
+    name: Build and test on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-latest, macos-latest]
+    steps:
+
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-go@v6
+      with:
+        go-version: '1.25'
+        check-latest: true
+
+    - name: Build nebula
+      run: go build ./cmd/nebula
+
+    - name: Build nebula-cert
+      run: go build ./cmd/nebula-cert
+
+    - name: Vet
+      run: make vet
+
+    - name: golangci-lint
+      uses: golangci/golangci-lint-action@v8
+      with:
+        version: v2.5
+
+    - name: Test
+      run: make test
+
+    - name: End 2 end
+      run: make e2evv
+
+    - uses: actions/upload-artifact@v4
+      with:
+        name: e2e packet flow ${{ matrix.os }}
+        path: e2e/mermaid/${{ matrix.os }}
+        if-no-files-found: warn

.golangci.yaml

@@ -2,21 +2,7 @@ version: "2"
 linters:
   default: none
   enable:
-    - sloglint
     - testifylint
-  settings:
-    sloglint:
-      # Enforce key-value pair form for Info/Debug/Warn/Error/Log/With and
-      # the package-level slog equivalents. Use l.Log(ctx, level, ...) for
-      # custom levels instead of LogAttrs when you can.
-      #
-      # LogAttrs is also flagged by this rule because it takes ...slog.Attr;
-      # the few legitimate sites (where attrs is built up as a []slog.Attr)
-      # carry a //nolint:sloglint with rationale.
-      kv-only: true
-      # no-mixed-args is on by default: forbids mixing kv and attrs in one call.
-      # discard-handler is on by default (since Go 1.24): suggests
-      # slog.DiscardHandler over slog.NewTextHandler(io.Discard, nil).
   exclusions:
     generated: lax
     presets:

CHANGELOG.md

@@ -7,129 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-## [1.10.3] - 2026-02-06
-
-### Security
-
-- Fix an issue where blocklist bypass is possible when using curve P256 since the signature can have 2 valid representations.
-  Both fingerprint representations will be tested against the blocklist.
-  Any newly issued P256 based certificates will have their signature clamped to the low-s form.
-  Nebula will assert the low-s signature form when validating certificates in a future version. [GHSA-69x3-g4r3-p962](https://github.com/slackhq/nebula/security/advisories/GHSA-69x3-g4r3-p962)
-
 ### Changed
 
-- Improve error reporting if nebula fails to start due to a tun device naming issue. (#1588)
-
-## [1.10.2] - 2026-01-21
-
-### Fixed
-
-- Fix panic when using `use_system_route_table` that was introduced in v1.10.1. (#1580)
-
-### Changed
-
-- Fix some typos in comments. (#1582)
-- Dependency updates. (#1581)
-
-## [1.10.1] - 2026-01-16
-
-See the [v1.10.1](https://github.com/slackhq/nebula/milestone/26?closed=1) milestone for a complete list of changes.
-
-### Fixed
-
-- Fix a bug where an unsafe route derived from the system route table could be lost on a config reload. (#1573)
-- Fix the PEM banner for ECDSA P256 public keys. (#1552)
-- Fix a regression on Windows from 1.9.x where nebula could fall back to a less performant UDP listener if 
-  non-critical ioctls failed. (#1568)
-- Fix a bug in handshake processing when a peer sends an unexpected public key. (#1566)
-
-### Added
-
-- Add a config option to control accepting `recv_error` packets which defaults to `always`. (#1569)
-
-### Changed
-
-- Various dependency updates. (#1541, #1549, #1550, #1557, #1558, #1560, #1561, #1570, #1571)
-
-## [1.10.0] - 2025-12-04
-
-See the [v1.10.0](https://github.com/slackhq/nebula/milestone/16?closed=1) milestone for a complete list of changes.
-
-### Added
-
-- Support for ipv6 and multiple ipv4/6 addresses in the overlay.
-  A new v2 ASN.1 based certificate format.
-  Certificates now have a unified interface for external implementations.
-  (#1212, #1216, #1345, #1359, #1381, #1419, #1464, #1466, #1451, #1476, #1467, #1481, #1399, #1488, #1492, #1495, #1468, #1521, #1535, #1538)
-- Add the ability to mark packets on linux to better target nebula packets in iptables/nftables. (#1331)
-- Add ECMP support for `unsafe_routes`. (#1332)
-- PKCS11 support for P256 keys when built with `pkcs11` tag (#1153, #1482)
-
-### Changed
-
-- **NOTE**: `default_local_cidr_any` now defaults to false, meaning that any firewall rule
+- `default_local_cidr_any` now defaults to false, meaning that any firewall rule
   intended to target an `unsafe_routes` entry must explicitly declare it via the
   `local_cidr` field. This is almost always the intended behavior. This flag is
-  deprecated and will be removed in a future release. (#1373)
-- Improve logging when a relay is in use on an inbound packet. (#1533)
-- Avoid fatal errors if `rountines` is > 1 on systems that don't support more than 1 routine. (#1531)
-- Log a warning if a firewall rule contains an `any` that negates a more restrictive filter. (#1513)
-- Accept encrypted CA passphrase from an environment variable. (#1421)
-- Allow handshaking with any trusted remote. (#1509)
-- Log only the count of blocklisted certificate fingerprints instead of the entire list. (#1525)
-- Don't fatal when the ssh server is unable to be configured successfully. (#1520)
-- Update to build against go v1.25. (#1483)
-- Allow projects using `nebula` as a library with userspace networking to configure the `logger` and build version. (#1239) 
-- Upgrade to `yaml.v3`. (#1148, #1371, #1438, #1478)
-
-### Fixed
-
-- Fix a potential bug with udp ipv4 only on darwin. (#1532)
-- Improve lost packet statistics. (#1441, #1537)
-- Honor `remote_allow_list` in hole punch response. (#1186)
-- Fix a panic when `tun.use_system_route_table` is `true` and a route lacks a destination. (#1437) 
-- Fix an issue when `tun.use_system_route_table: true` could result in heavy CPU utilization when many thousands of routes
-  are present. (#1326) 
-- Fix tests for 32 bit machines. (#1394)
-- Fix a possible 32bit integer underflow in config handling. (#1353)
-- Fix moving a udp address from one vpn address to another in the `static_host_map`
-  which could cause rapid re-handshaking with an incorrect remote. (#1259)
-- Improve smoke tests in environments where the docker network is not the default. (#1347)
-
-## [1.9.7] - 2025-10-10
-
-### Security
-
-- Fix an issue where Nebula could incorrectly accept and process a packet from an erroneous source IP when the sender's
-  certificate is configured with unsafe_routes (cert v1/v2) or multiple IPs (cert v2). (#1494)
-
-### Changed
-
-- Disable sending `recv_error` messages when a packet is received outside the allowable counter window. (#1459)
-- Improve error messages and remove some unnecessary fatal conditions in the Windows and generic udp listener. (#1453)
-
-## [1.9.6] - 2025-7-15
-
-### Added
-
-- Support dropping inactive tunnels. This is disabled by default in this release but can be enabled with `tunnels.drop_inactive`. See example config for more details. (#1413)
-
-### Fixed
-
-- Fix Darwin freeze due to presence of some Network Extensions (#1426)
-- Ensure the same relay tunnel is always used when multiple relay tunnels are present (#1422)
-- Fix Windows freeze due to ICMP error handling (#1412)
-- Fix relay migration panic (#1403)
-
-## [1.9.5] - 2024-12-05
-
-### Added
-
-- Gracefully ignore v2 certificates. (#1282)
-
-### Fixed
-
-- Fix relays that refuse to re-establish after one of the remote tunnel pairs breaks. (#1277)
+  deprecated and will be removed in a future release.
 
 ## [1.9.4] - 2024-09-09
 
@@ -788,14 +671,7 @@ created.)
 
 - Initial public release.
 
-[Unreleased]: https://github.com/slackhq/nebula/compare/v1.10.3...HEAD
-[1.10.3]: https://github.com/slackhq/nebula/releases/tag/v1.10.3
-[1.10.2]: https://github.com/slackhq/nebula/releases/tag/v1.10.2
-[1.10.1]: https://github.com/slackhq/nebula/releases/tag/v1.10.1
-[1.10.0]: https://github.com/slackhq/nebula/releases/tag/v1.10.0
-[1.9.7]: https://github.com/slackhq/nebula/releases/tag/v1.9.7
-[1.9.6]: https://github.com/slackhq/nebula/releases/tag/v1.9.6
-[1.9.5]: https://github.com/slackhq/nebula/releases/tag/v1.9.5
+[Unreleased]: https://github.com/slackhq/nebula/compare/v1.9.4...HEAD
 [1.9.4]: https://github.com/slackhq/nebula/releases/tag/v1.9.4
 [1.9.3]: https://github.com/slackhq/nebula/releases/tag/v1.9.3
 [1.9.2]: https://github.com/slackhq/nebula/releases/tag/v1.9.2

CODEOWNERS

@@ -1 +0,0 @@
-#ECCN:Open Source

Makefile

@@ -60,18 +60,6 @@ ALL = $(ALL_LINUX) \
 	windows-amd64 \
 	windows-arm64
 
-# Cross-build shards used by .github/workflows/test.yml — same as ALL_*
-# but with the arch that has a native CI runner removed, so the cross-build
-# job is not duplicating coverage the native test jobs already give.
-ALL_CROSS_LINUX = $(filter-out linux-amd64,$(ALL_LINUX))
-
-# ALL_CROSS_LINUX further split into family sub-shards so each can run on
-# its own CI runner in parallel. Union of the three must equal
-# ALL_CROSS_LINUX; adding a new linux arch goes into the matching family.
-ALL_CROSS_LINUX_ARM   = linux-arm-5 linux-arm-6 linux-arm-7 linux-arm64
-ALL_CROSS_LINUX_MIPS  = linux-mips linux-mipsle linux-mips64 linux-mips64le linux-mips-softfloat
-ALL_CROSS_LINUX_OTHER = linux-386 linux-ppc64le linux-riscv64 linux-loong64
-
 e2e:
 	$(TEST_ENV) go test -tags=e2e_testing -count=1 $(TEST_FLAGS) ./e2e
 
@@ -94,35 +82,6 @@ DOCKER_BIN = build/linux-amd64/nebula build/linux-amd64/nebula-cert
 
 all: $(ALL:%=build/%/nebula) $(ALL:%=build/%/nebula-cert)
 
-all-linux: $(ALL_LINUX:%=build/%/nebula) $(ALL_LINUX:%=build/%/nebula-cert)
-
-all-freebsd: $(ALL_FREEBSD:%=build/%/nebula) $(ALL_FREEBSD:%=build/%/nebula-cert)
-
-all-openbsd: $(ALL_OPENBSD:%=build/%/nebula) $(ALL_OPENBSD:%=build/%/nebula-cert)
-
-all-netbsd: $(ALL_NETBSD:%=build/%/nebula) $(ALL_NETBSD:%=build/%/nebula-cert)
-
-all-darwin: build/darwin-amd64/nebula build/darwin-amd64/nebula-cert build/darwin-arm64/nebula build/darwin-arm64/nebula-cert
-
-all-windows: build/windows-amd64/nebula.exe build/windows-amd64/nebula-cert.exe build/windows-arm64/nebula.exe build/windows-arm64/nebula-cert.exe
-
-# CI cross-build shards. darwin-arm64 is covered by the native macos-latest
-# job; windows-amd64 is covered by the native windows-latest job; both are
-# omitted here to avoid building them a second time. darwin-amd64 stays in
-# all-cross-darwin because intel mac is only a labeled/master-time native
-# job, so PRs still need cross-build coverage for it.
-all-cross-linux: $(ALL_CROSS_LINUX:%=build/%/nebula) $(ALL_CROSS_LINUX:%=build/%/nebula-cert)
-
-all-cross-linux-arm:   $(ALL_CROSS_LINUX_ARM:%=build/%/nebula)   $(ALL_CROSS_LINUX_ARM:%=build/%/nebula-cert)
-
-all-cross-linux-mips:  $(ALL_CROSS_LINUX_MIPS:%=build/%/nebula)  $(ALL_CROSS_LINUX_MIPS:%=build/%/nebula-cert)
-
-all-cross-linux-other: $(ALL_CROSS_LINUX_OTHER:%=build/%/nebula) $(ALL_CROSS_LINUX_OTHER:%=build/%/nebula-cert)
-
-all-cross-darwin: build/darwin-amd64/nebula build/darwin-amd64/nebula-cert
-
-all-cross-windows: build/windows-arm64/nebula.exe build/windows-arm64/nebula-cert.exe
-
 docker: docker/linux-$(shell go env GOARCH)
 
 release: $(ALL:%=build/nebula-%.tar.gz)
@@ -268,9 +227,6 @@ smoke-relay-docker: bin-docker
 	cd .github/workflows/smoke/ && ./build-relay.sh
 	cd .github/workflows/smoke/ && ./smoke-relay.sh
 
-smoke-docker-ipv6: export SMOKE_OVERLAY_IPV6 = 1
-smoke-docker-ipv6: smoke-docker
-
 smoke-docker-race: BUILD_ARGS = -race
 smoke-docker-race: CGO_ENABLED = 1
 smoke-docker-race: smoke-docker
@@ -280,5 +236,5 @@ smoke-vagrant/%: bin-docker build/%/nebula
 	cd .github/workflows/smoke/ && ./smoke-vagrant.sh $*
 
 .FORCE:
-.PHONY: all all-linux all-freebsd all-openbsd all-netbsd all-darwin all-windows all-cross-linux all-cross-linux-arm all-cross-linux-mips all-cross-linux-other all-cross-darwin all-cross-windows bench bench-cpu bench-cpu-long bin build-test-mobile e2e e2ev e2evv e2evvv e2evvvv proto release service smoke-docker smoke-docker-race test test-cov-html smoke-vagrant/%
+.PHONY: bench bench-cpu bench-cpu-long bin build-test-mobile e2e e2ev e2evv e2evvv e2evvvv proto release service smoke-docker smoke-docker-race test test-cov-html smoke-vagrant/%
 .DEFAULT_GOAL := bin

README.md

@@ -57,7 +57,7 @@ Check the [releases](https://github.com/slackhq/nebula/releases/latest) page for
     docker pull nebulaoss/nebula
     ```
 
-#### Mobile ([source code](https://github.com/DefinedNet/mobile_nebula))
+#### Mobile
 
 - [iOS](https://apps.apple.com/us/app/mobile-nebula/id1509587936?itsct=apps_box&itscg=30200)
 - [Android](https://play.google.com/store/apps/details?id=net.defined.mobile_nebula&pcampaignid=pcampaignidMKT-Other-global-all-co-prtnr-py-PartBadge-Mar2515-1)
@@ -76,8 +76,6 @@ Nebula was created to provide a mechanism for groups of hosts to communicate sec
 
 ## Getting started (quickly)
 
-**Don't want to manage your own PKI and lighthouses?** [Managed Nebula](https://www.defined.net/) from Defined Networking handles all of this for you.
-
 To set up a Nebula network, you'll need:
 
 #### 1. The [Nebula binaries](https://github.com/slackhq/nebula/releases) or [Distribution Packages](https://github.com/slackhq/nebula#distribution-packages) for your specific platform. Specifically you'll need `nebula-cert` and the specific nebula binary for each platform you use.

bits.go

@@ -1,263 +1,157 @@
 package nebula
 
 import (
-	"context"
-	"fmt"
-	"log/slog"
-	"math"
-	mathbits "math/bits"
-
 	"github.com/rcrowley/go-metrics"
+	"github.com/sirupsen/logrus"
 )
 
-const bitsPerWord = 64
-
-// Bits is a sliding-window anti-replay tracker. The window is stored as a
-// circular bitmap packed into uint64 words (8x denser than a []bool), so a
-// length-N window costs N/8 bytes. length must be a power of two.
 type Bits struct {
 	length             uint64
-	lengthMask         uint64
 	current            uint64
-	bits               []uint64
+	bits               []bool
+	firstSeen          bool
 	lostCounter        metrics.Counter
 	dupeCounter        metrics.Counter
 	outOfWindowCounter metrics.Counter
 }
 
-func NewBits(length uint64) *Bits {
-	if length == 0 || length&(length-1) != 0 {
-		panic(fmt.Sprintf("Bits length must be a power of two, got %d", length))
-	}
-
-	nWords := length / bitsPerWord
-	if nWords == 0 {
-		nWords = 1
-	}
-	b := &Bits{
-		length:             length,
-		lengthMask:         length - 1,
-		bits:               make([]uint64, nWords),
+func NewBits(bits uint64) *Bits {
+	return &Bits{
+		length:             bits,
+		bits:               make([]bool, bits, bits),
 		current:            0,
 		lostCounter:        metrics.GetOrRegisterCounter("network.packets.lost", nil),
 		dupeCounter:        metrics.GetOrRegisterCounter("network.packets.duplicate", nil),
 		outOfWindowCounter: metrics.GetOrRegisterCounter("network.packets.out_of_window", nil),
 	}
-
-	// There is no counter value 0, mark it to avoid counting a lost packet later.
-	b.bits[0] = 1
-	return b
 }
 
-func (b *Bits) get(i uint64) bool {
-	pos := i & b.lengthMask
-	//bit-shifting by 6 because i is a bit index, not a u64 index, and we need to find the u64 without bit in it
-	return b.bits[pos>>6]&(uint64(1)<<(pos&63)) != 0
-}
-
-func (b *Bits) set(i uint64) {
-	pos := i & b.lengthMask
-	b.bits[pos>>6] |= uint64(1) << (pos & 63)
-}
-
-// clearRange clears `count` bits starting at circular position `startPos`
-// (already masked to [0, length)) and returns how many of them were set
-// before the clear. count must be in [1, length].
-func (b *Bits) clearRange(startPos, count uint64) uint64 {
-	wasSet := uint64(0)
-	if count >= b.length {
-		for _, w := range b.bits {
-			wasSet += uint64(mathbits.OnesCount64(w))
-		}
-		clear(b.bits)
-		return wasSet
-	}
-
-	pos := startPos
-	remaining := count
-
-	// handle the potential partial word before pos becomes u64 aligned
-	word := pos >> 6
-	bit := pos & 63
-	take := uint64(64) - bit
-	if take > remaining {
-		take = remaining
-	}
-	if take > b.length-pos {
-		take = b.length - pos
-	}
-	var mask uint64
-	if take == 64 {
-		mask = math.MaxUint64
-	} else {
-		mask = ((uint64(1) << take) - 1) << bit
-	}
-	wasSet += uint64(mathbits.OnesCount64(b.bits[word] & mask))
-	b.bits[word] &^= mask
-	remaining -= take
-	pos = (pos + take) & b.lengthMask
-
-	// Clear whole words, keeping track of the number of set bits
-	for remaining >= 64 {
-		word = pos >> 6
-		wasSet += uint64(mathbits.OnesCount64(b.bits[word]))
-		b.bits[word] = 0
-		remaining -= 64
-		pos = (pos + 64) & b.lengthMask
-	}
-
-	// Clear the remaining partial word
-	if remaining > 0 {
-		word = pos >> 6
-		mask = (uint64(1) << remaining) - 1
-		wasSet += uint64(mathbits.OnesCount64(b.bits[word] & mask))
-		b.bits[word] &^= mask
-	}
-
-	return wasSet
-}
-
-func (b *Bits) strictlyWithinWindow(i uint64) bool {
-	// Handle the case where the window hasn't slid yet. This avoids u64 underflow.
-	inWarmup := b.current < b.length
-	if i < b.length && inWarmup {
-		return true
-	}
-
-	// Next, if the packet is in-window, see if we've seen it before
-	if i > b.current-b.length {
-		return true
-	}
-	return false //not within window!
-}
-
-// Check returns true if i is within (or way out in front of) the window, and not a replay
-func (b *Bits) Check(l *slog.Logger, i uint64) bool {
+func (b *Bits) Check(l logrus.FieldLogger, i uint64) bool {
 	// If i is the next number, return true.
-	if i > b.current {
+	if i > b.current || (i == 0 && b.firstSeen == false && b.current < b.length) {
 		return true
 	}
 
-	if b.strictlyWithinWindow(i) {
-		return !b.get(i)
+	// If i is within the window, check if it's been set already. The first window will fail this check
+	if i > b.current-b.length {
+		return !b.bits[i%b.length]
+	}
+
+	// If i is within the first window
+	if i < b.length {
+		return !b.bits[i%b.length]
 	}
 
 	// Not within the window
-	if l.Enabled(context.Background(), slog.LevelDebug) {
-		l.Debug("rejected a packet (top)", "current", b.current, "incoming", i)
-	}
+	l.Debugf("rejected a packet (top) %d %d\n", b.current, i)
 	return false
 }
 
-// Update has three branches:
-//   - i == b.current+1: fast path; advance the cursor by one and lose-count
-//     the slot we just stomped (only past warmup; see the i > b.length guard
-//     below).
-//   - i  >  b.current+1: jump path; clear all slots between current and i
-//     (or up to a full window's worth, whichever is smaller) via clearRange,
-//     then mark i. Two arms here: a warmup arm that handles the very first
-//     window before the cursor has slid, and a steady-state arm that treats
-//     every cleared empty slot as a lost packet.
-//   - i  <= b.current: in-window check for duplicates; out-of-window otherwise.
-//
-// NewBits seeds bits[0]=1 so counter 0 looks "received" — Update never
-// clears that marker during warmup (clearRange skips position 0 when
-// startPos=1), and once b.current >= b.length the marker is no longer
-// consulted. The marker prevents a fictitious "lost" hit on the first real
-// counter.
-func (b *Bits) Update(l *slog.Logger, i uint64) bool {
-	// Fast path: i is the next expected counter. Split out so the function
-	// stays small and avoids paying for the slow paths' slog argument-build
-	// stack frame on every call. The bit read/test/write is inlined to
-	// touch the backing word once.
+func (b *Bits) Update(l *logrus.Logger, i uint64) bool {
+	// If i is the next number, return true and update current.
 	if i == b.current+1 {
-		pos := i & b.lengthMask
-		word := pos >> 6
-		mask := uint64(1) << (pos & 63)
-		w := b.bits[word]
-		if i > b.length && w&mask == 0 {
+		// Report missed packets, we can only understand what was missed after the first window has been gone through
+		if i > b.length && b.bits[i%b.length] == false {
 			b.lostCounter.Inc(1)
 		}
-		b.bits[word] = w | mask
+		b.bits[i%b.length] = true
 		b.current = i
 		return true
 	}
-	return b.updateSlow(l, i)
-}
 
-// updateSlow handles jumps, in-window backfill, dupes, and out-of-window.
-func (b *Bits) updateSlow(l *slog.Logger, i uint64) bool {
-	// If i is a jump, adjust the window, record lost, update current, and return true
-	if i > b.current {
-		end := i
-		if end > b.current+b.length {
-			end = b.current + b.length
-		}
-		count := end - b.current
-		startPos := (b.current + 1) & b.lengthMask
-
-		var lost int64
-		if b.current >= b.length {
-			// Steady state: every cleared slot is past warmup, so any unset
-			// bit we evict is a lost packet from the previous cycle.
-			wasSet := b.clearRange(startPos, count)
-			lost = int64(count) - int64(wasSet)
-		} else {
-			// Warmup (the very first window). Some cleared slots represent
-			// packets <= length where eviction is not "lost" in the usual
-			// sense. This branch is taken at most once per connection so we
-			// don't bother optimizing it.
-			for n := b.current + 1; n <= end; n++ {
-				if !b.get(n) && n > b.length {
-					lost++
-				}
-			}
-			b.clearRange(startPos, count)
+	// If i packet is greater than current but less than the maximum length of our bitmap,
+	// flip everything in between to false and move ahead.
+	if i > b.current && i < b.current+b.length {
+		// In between current and i need to be zero'd to allow those packets to come in later
+		for n := b.current + 1; n < i; n++ {
+			b.bits[n%b.length] = false
 		}
 
-		// Anything past the new window can never be backfilled, so it's lost.
-		if i > b.current+b.length {
-			lost += int64(i - b.current - b.length)
+		b.bits[i%b.length] = true
+		b.current = i
+		//l.Debugf("missed %d packets between %d and %d\n", i-b.current, i, b.current)
+		return true
+	}
+
+	// If i is greater than the delta between current and the total length of our bitmap,
+	// just flip everything in the map and move ahead.
+	if i >= b.current+b.length {
+		// The current window loss will be accounted for later, only record the jump as loss up until then
+		lost := maxInt64(0, int64(i-b.current-b.length))
+		//TODO: explain this
+		if b.current == 0 {
+			lost++
 		}
+
+		for n := range b.bits {
+			// Don't want to count the first window as a loss
+			//TODO: this is likely wrong, we are wanting to track only the bit slots that we aren't going to track anymore and this is marking everything as missed
+			//if b.bits[n] == false {
+			//	lost++
+			//}
+			b.bits[n] = false
+		}
+
 		b.lostCounter.Inc(lost)
 
-		b.set(i)
+		if l.Level >= logrus.DebugLevel {
+			l.WithField("receiveWindow", m{"accepted": true, "currentCounter": b.current, "incomingCounter": i, "reason": "window shifting"}).
+				Debug("Receive window")
+		}
+		b.bits[i%b.length] = true
 		b.current = i
 		return true
 	}
 
-	// If i is within the current window but below the current counter, check to see if it's a duplicate
-	if b.strictlyWithinWindow(i) {
-		pos := i & b.lengthMask
-		word := pos >> 6
-		mask := uint64(1) << (pos & 63)
-		w := b.bits[word]
-		if b.current == i || w&mask != 0 {
-			if l.Enabled(context.Background(), slog.LevelDebug) {
-				l.Debug("Receive window",
-					"accepted", false,
-					"currentCounter", b.current,
-					"incomingCounter", i,
-					"reason", "duplicate",
-				)
+	// Allow for the 0 packet to come in within the first window
+	if i == 0 && b.firstSeen == false && b.current < b.length {
+		b.firstSeen = true
+		b.bits[i%b.length] = true
+		return true
+	}
+
+	// If i is within the window of current minus length (the total pat window size),
+	// allow it and flip to true but to NOT change current. We also have to account for the first window
+	if ((b.current >= b.length && i > b.current-b.length) || (b.current < b.length && i < b.length)) && i <= b.current {
+		if b.current == i {
+			if l.Level >= logrus.DebugLevel {
+				l.WithField("receiveWindow", m{"accepted": false, "currentCounter": b.current, "incomingCounter": i, "reason": "duplicate"}).
+					Debug("Receive window")
 			}
 			b.dupeCounter.Inc(1)
 			return false
 		}
 
-		b.bits[word] = w | mask
+		if b.bits[i%b.length] == true {
+			if l.Level >= logrus.DebugLevel {
+				l.WithField("receiveWindow", m{"accepted": false, "currentCounter": b.current, "incomingCounter": i, "reason": "old duplicate"}).
+					Debug("Receive window")
+			}
+			b.dupeCounter.Inc(1)
+			return false
+		}
+
+		b.bits[i%b.length] = true
 		return true
+
 	}
 
 	// In all other cases, fail and don't change current.
 	b.outOfWindowCounter.Inc(1)
-	if l.Enabled(context.Background(), slog.LevelDebug) {
-		l.Debug("Receive window",
-			"accepted", false,
-			"currentCounter", b.current,
-			"incomingCounter", i,
-			"reason", "nonsense",
-		)
+	if l.Level >= logrus.DebugLevel {
+		l.WithField("accepted", false).
+			WithField("currentCounter", b.current).
+			WithField("incomingCounter", i).
+			WithField("reason", "nonsense").
+			Debug("Receive window")
 	}
 	return false
 }
+
+func maxInt64(a, b int64) int64 {
+	if a > b {
+		return a
+	}
+
+	return b
+}

bits_test.go

@@ -7,114 +7,77 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-// snapshot returns the bitmap as a []bool of length b.length, for readable
-// test assertions against the now-packed []uint64 storage.
-func (b *Bits) snapshot() []bool {
-	out := make([]bool, b.length)
-	for i := uint64(0); i < b.length; i++ {
-		out[i] = b.get(i)
-	}
-	return out
-}
-
-func TestBitsRequiresPowerOfTwo(t *testing.T) {
-	assert.Panics(t, func() { NewBits(10) })
-	assert.Panics(t, func() { NewBits(0) })
-	assert.NotPanics(t, func() { NewBits(1) })
-	assert.NotPanics(t, func() { NewBits(16) })
-	assert.NotPanics(t, func() { NewBits(1024) })
-	assert.NotPanics(t, func() { NewBits(16384) })
-}
-
 func TestBits(t *testing.T) {
 	l := test.NewLogger()
-	b := NewBits(16)
-	assert.EqualValues(t, 16, b.length)
+	b := NewBits(10)
+
+	// make sure it is the right size
+	assert.Len(t, b.bits, 10)
 
 	// This is initialized to zero - receive one. This should work.
+
 	assert.True(t, b.Check(l, 1))
-	assert.True(t, b.Update(l, 1))
+	u := b.Update(l, 1)
+	assert.True(t, u)
 	assert.EqualValues(t, 1, b.current)
-	g := []bool{true, true, false, false, false, false, false, false, false, false, false, false, false, false, false, false}
-	assert.Equal(t, g, b.snapshot())
+	g := []bool{false, true, false, false, false, false, false, false, false, false}
+	assert.Equal(t, g, b.bits)
 
 	// Receive two
 	assert.True(t, b.Check(l, 2))
-	assert.True(t, b.Update(l, 2))
+	u = b.Update(l, 2)
+	assert.True(t, u)
 	assert.EqualValues(t, 2, b.current)
-	g = []bool{true, true, true, false, false, false, false, false, false, false, false, false, false, false, false, false}
-	assert.Equal(t, g, b.snapshot())
+	g = []bool{false, true, true, false, false, false, false, false, false, false}
+	assert.Equal(t, g, b.bits)
 
 	// Receive two again - it will fail
 	assert.False(t, b.Check(l, 2))
-	assert.False(t, b.Update(l, 2))
+	u = b.Update(l, 2)
+	assert.False(t, u)
 	assert.EqualValues(t, 2, b.current)
 
-	// Jump ahead to 25, which clears the window and sets slot 25%16 = 9.
-	assert.True(t, b.Check(l, 25))
-	assert.True(t, b.Update(l, 25))
-	assert.EqualValues(t, 25, b.current)
-	g = []bool{false, false, false, false, false, false, false, false, false, true, false, false, false, false, false, false}
-	assert.Equal(t, g, b.snapshot())
+	// Jump ahead to 15, which should clear everything and set the 6th element
+	assert.True(t, b.Check(l, 15))
+	u = b.Update(l, 15)
+	assert.True(t, u)
+	assert.EqualValues(t, 15, b.current)
+	g = []bool{false, false, false, false, false, true, false, false, false, false}
+	assert.Equal(t, g, b.bits)
 
-	// Mark 24, which is in window (current 25, length 16, window covers [10,25]).
-	assert.True(t, b.Check(l, 24))
-	assert.True(t, b.Update(l, 24))
-	assert.EqualValues(t, 25, b.current)
-	g = []bool{false, false, false, false, false, false, false, false, true, true, false, false, false, false, false, false}
-	assert.Equal(t, g, b.snapshot())
+	// Mark 14, which is allowed because it is in the window
+	assert.True(t, b.Check(l, 14))
+	u = b.Update(l, 14)
+	assert.True(t, u)
+	assert.EqualValues(t, 15, b.current)
+	g = []bool{false, false, false, false, true, true, false, false, false, false}
+	assert.Equal(t, g, b.bits)
 
-	// Mark 5, not allowed because 5 <= current-length (25-16=9).
+	// Mark 5, which is not allowed because it is not in the window
 	assert.False(t, b.Check(l, 5))
-	assert.False(t, b.Update(l, 5))
-	assert.EqualValues(t, 25, b.current)
-	g = []bool{false, false, false, false, false, false, false, false, true, true, false, false, false, false, false, false}
-	assert.Equal(t, g, b.snapshot())
+	u = b.Update(l, 5)
+	assert.False(t, u)
+	assert.EqualValues(t, 15, b.current)
+	g = []bool{false, false, false, false, true, true, false, false, false, false}
+	assert.Equal(t, g, b.bits)
 
-	// Make sure we handle wrapping around once to the same slot. With
-	// length=16, packets 1 and 17 share slot 1.
-	b = NewBits(16)
+	// make sure we handle wrapping around once to the current position
+	b = NewBits(10)
 	assert.True(t, b.Update(l, 1))
-	assert.True(t, b.Update(l, 17))
-	assert.Equal(t, []bool{false, true, false, false, false, false, false, false, false, false, false, false, false, false, false, false}, b.snapshot())
+	assert.True(t, b.Update(l, 11))
+	assert.Equal(t, []bool{false, true, false, false, false, false, false, false, false, false}, b.bits)
 
 	// Walk through a few windows in order
-	b = NewBits(16)
-	for i := uint64(1); i <= 100; i++ {
+	b = NewBits(10)
+	for i := uint64(0); i <= 100; i++ {
 		assert.True(t, b.Check(l, i), "Error while checking %v", i)
 		assert.True(t, b.Update(l, i), "Error while updating %v", i)
 	}
-
-	assert.False(t, b.Check(l, 1), "Out of window check")
-}
-
-func TestBitsLargeJumps(t *testing.T) {
-	l := test.NewLogger()
-
-	// length=16. Update(55) from current=0:
-	//   warmup, per-bit loop sees no n>16 with unset bits (slot 0 was set by
-	//   NewBits and gets re-evaluated when n=16; n=16 is not strictly > 16),
-	//   so the loop contributes 0. The jump exceeds the window so we record
-	//   55 - 0 - 16 = 39 packets fell out the back.
-	b := NewBits(16)
-	b.lostCounter.Clear()
-	assert.True(t, b.Update(l, 55))
-	assert.Equal(t, int64(39), b.lostCounter.Count())
-
-	// Update(100): clears 16 slots starting at slot 56%16=8. Only slot 7 (for
-	// packet 55) was set, so 16 - 1 = 15 evicted slots had unset bits.
-	// Plus 100 - 55 - 16 = 29 packets fell past the window. Total 44.
-	assert.True(t, b.Update(l, 100))
-	assert.Equal(t, int64(39+44), b.lostCounter.Count())
-
-	// Update(200): same shape: 16 - 1 = 15 evicted unset, plus 200 - 100 - 16 = 84 past window. Total 99.
-	assert.True(t, b.Update(l, 200))
-	assert.Equal(t, int64(39+44+99), b.lostCounter.Count())
 }
 
 func TestBitsDupeCounter(t *testing.T) {
 	l := test.NewLogger()
-	b := NewBits(16)
+	b := NewBits(10)
 	b.lostCounter.Clear()
 	b.dupeCounter.Clear()
 	b.outOfWindowCounter.Clear()
@@ -139,300 +102,127 @@ func TestBitsDupeCounter(t *testing.T) {
 
 func TestBitsOutOfWindowCounter(t *testing.T) {
 	l := test.NewLogger()
-	b := NewBits(16)
+	b := NewBits(10)
 	b.lostCounter.Clear()
 	b.dupeCounter.Clear()
 	b.outOfWindowCounter.Clear()
 
-	// Jump to 20 (warmup branch + 4 past-window packets).
 	assert.True(t, b.Update(l, 20))
 	assert.Equal(t, int64(0), b.outOfWindowCounter.Count())
 
-	// 9 single-step advances, each evicts a slot whose bit was cleared during
-	// the jump above and whose value was never seen, so each contributes 1
-	// to lostCounter.
-	for n := uint64(21); n <= 29; n++ {
-		assert.True(t, b.Update(l, n))
-	}
+	assert.True(t, b.Update(l, 21))
+	assert.True(t, b.Update(l, 22))
+	assert.True(t, b.Update(l, 23))
+	assert.True(t, b.Update(l, 24))
+	assert.True(t, b.Update(l, 25))
+	assert.True(t, b.Update(l, 26))
+	assert.True(t, b.Update(l, 27))
+	assert.True(t, b.Update(l, 28))
+	assert.True(t, b.Update(l, 29))
 	assert.Equal(t, int64(0), b.outOfWindowCounter.Count())
 
-	// 0 is below current-length (29-16=13) so it falls outside the window.
 	assert.False(t, b.Update(l, 0))
 	assert.Equal(t, int64(1), b.outOfWindowCounter.Count())
 
-	// 4 from the Update(20) jump + 9 from 21..29.
-	assert.Equal(t, int64(13), b.lostCounter.Count())
+	//tODO: make sure lostcounter doesn't increase in orderly increment
+	assert.Equal(t, int64(20), b.lostCounter.Count())
 	assert.Equal(t, int64(0), b.dupeCounter.Count())
 	assert.Equal(t, int64(1), b.outOfWindowCounter.Count())
 }
 
 func TestBitsLostCounter(t *testing.T) {
 	l := test.NewLogger()
-	b := NewBits(16)
+	b := NewBits(10)
 	b.lostCounter.Clear()
 	b.dupeCounter.Clear()
 	b.outOfWindowCounter.Clear()
 
-	// Walk 20..29 like the original, just with a bigger window. Same
-	// reasoning as TestBitsOutOfWindowCounter: 4 past-window from Update(20),
-	// then 9 more from the unit advances.
-	for n := uint64(20); n <= 29; n++ {
-		assert.True(t, b.Update(l, n))
-	}
-	assert.Equal(t, int64(13), b.lostCounter.Count())
+	//assert.True(t, b.Update(0))
+	assert.True(t, b.Update(l, 0))
+	assert.True(t, b.Update(l, 20))
+	assert.True(t, b.Update(l, 21))
+	assert.True(t, b.Update(l, 22))
+	assert.True(t, b.Update(l, 23))
+	assert.True(t, b.Update(l, 24))
+	assert.True(t, b.Update(l, 25))
+	assert.True(t, b.Update(l, 26))
+	assert.True(t, b.Update(l, 27))
+	assert.True(t, b.Update(l, 28))
+	assert.True(t, b.Update(l, 29))
+	assert.Equal(t, int64(20), b.lostCounter.Count())
 	assert.Equal(t, int64(0), b.dupeCounter.Count())
 	assert.Equal(t, int64(0), b.outOfWindowCounter.Count())
 
-	b = NewBits(16)
+	b = NewBits(10)
 	b.lostCounter.Clear()
 	b.dupeCounter.Clear()
 	b.outOfWindowCounter.Clear()
 
-	// Update(15) clears the warmup window (no lost), sets slot 15.
-	assert.True(t, b.Update(l, 15))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-
-	// Update(16): slot 0 was already set (NewBits seeded it), and 16 is not
-	// strictly > length, so nothing is recorded as lost.
-	assert.True(t, b.Update(l, 16))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-
-	// Update(17): we jumped straight from 0 to 15, so slot 1 was cleared
-	// (and never re-set). 17 > 16 is past warmup, so packet 1 is recorded lost.
-	assert.True(t, b.Update(l, 17))
-	assert.Equal(t, int64(1), b.lostCounter.Count())
-
-	// Fill in 18..30 in single steps. Each i evicts slot i%16. Slots 2..14
-	// were all cleared during Update(15), and we never re-set any of them,
-	// so each i in 18..30 is a fresh lost packet — 13 more.
-	for n := uint64(18); n <= 30; n++ {
-		assert.True(t, b.Update(l, n))
-	}
-	assert.Equal(t, int64(14), b.lostCounter.Count())
-
-	// Jump ahead by exactly one window size.
-	assert.True(t, b.Update(l, 46))
-	// end = min(46, 30+16) = 46, count = 16, all slots cleared. Before the
-	// jump every slot 0..15 had been set (Update(15), (16), (17), 18..30),
-	// so wasSet=16 and 46 == current+length means no past-window slack:
-	// lost contribution = 0.
-	assert.Equal(t, int64(14), b.lostCounter.Count())
-
-	// Walk 47..55. The Update(46) jump cleared every slot, so only slot 14
-	// (for packet 46) is set when we start. Each subsequent unit step lands
-	// on a slot that was cleared and is past warmup, so it counts as lost.
-	// 9 more = 23.
-	for n := uint64(47); n <= 55; n++ {
-		assert.True(t, b.Update(l, n))
-	}
-	assert.Equal(t, int64(23), b.lostCounter.Count())
-
-	// Jump ahead by two windows: clears the window plus past-window loss.
-	assert.True(t, b.Update(l, 87))
-	// current=55, length=16. end = min(87, 71) = 71. count=16, all slots
-	// cleared. Slots set before the clear are slots 14,15,0..7 (10 total).
-	// Lost from clear = 16 - 10 = 6. Past window: 87 - 55 - 16 = 16. +22.
-	assert.Equal(t, int64(45), b.lostCounter.Count())
-	assert.Equal(t, int64(0), b.dupeCounter.Count())
-	assert.Equal(t, int64(0), b.outOfWindowCounter.Count())
-}
-
-func TestBitsLostCounterIssue1(t *testing.T) {
-	l := test.NewLogger()
-	b := NewBits(16)
-	b.lostCounter.Clear()
-	b.dupeCounter.Clear()
-	b.outOfWindowCounter.Clear()
-
-	// Receive 4, backfill 1, then 9, 2, 3, 5, 6, 7 (skip 8), 10, 11, 14.
-	// Then jump to 25 — slot 25%16=9 is being evicted, but it had been set
-	// (we received packet 9), so no spurious lost increment. The original
-	// regression was about double-counting a missing packet when its slot
-	// got cleared on a jump. With the jump path now using clearRange's
-	// word-level wasSet count, the same semantics hold.
-	assert.True(t, b.Update(l, 4))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-	assert.True(t, b.Update(l, 1))
+	assert.True(t, b.Update(l, 0))
 	assert.Equal(t, int64(0), b.lostCounter.Count())
 	assert.True(t, b.Update(l, 9))
 	assert.Equal(t, int64(0), b.lostCounter.Count())
-	assert.True(t, b.Update(l, 2))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-	assert.True(t, b.Update(l, 3))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-	assert.True(t, b.Update(l, 5))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-	assert.True(t, b.Update(l, 6))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-	assert.True(t, b.Update(l, 7))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-	// Skip packet 8.
+	// 10 will set 0 index, 0 was already set, no lost packets
 	assert.True(t, b.Update(l, 10))
 	assert.Equal(t, int64(0), b.lostCounter.Count())
+	// 11 will set 1 index, 1 was missed, we should see 1 packet lost
 	assert.True(t, b.Update(l, 11))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-
-	assert.True(t, b.Update(l, 14))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-
-	// Jump to 25. With length=16, slot 25%16=9 corresponds to packet 9
-	// (which we DID receive), so its bit is set and no lost++ from that
-	// eviction. The trace below shows the only loss is packet 8.
-	assert.True(t, b.Update(l, 25))
-	// current was 14, i=25. end=min(25,30)=25. count=11. startPos=15.
-	// steady? current=14<16, so warmup branch: per-bit n=15..25, count those
-	// with !get(n) AND n>16. n=17..25 are >16. Among slots 17%16=1..25%16=9
-	// did we set slots 1..9 (packets 1..9)? Yes for all but slot 8 (packet 8
-	// was skipped). n=24 maps to slot 8 which is FALSE → lost++. All other
-	// n in 17..25 map to slots that are set. n=16 is not strictly > 16. So
-	// lost = 1.
 	assert.Equal(t, int64(1), b.lostCounter.Count())
-
-	// Fill in 12, 13, 15, 16. Each is below current=25 (in-window). 16 must
-	// recheck slot 0 — it was set by NewBits and then cleared by the
-	// Update(25) jump, so 16 backfills cleanly.
+	// Now let's fill in the window, should end up with 8 lost packets
 	assert.True(t, b.Update(l, 12))
-	assert.Equal(t, int64(1), b.lostCounter.Count())
 	assert.True(t, b.Update(l, 13))
-	assert.Equal(t, int64(1), b.lostCounter.Count())
+	assert.True(t, b.Update(l, 14))
 	assert.True(t, b.Update(l, 15))
-	assert.Equal(t, int64(1), b.lostCounter.Count())
 	assert.True(t, b.Update(l, 16))
-	assert.Equal(t, int64(1), b.lostCounter.Count())
+	assert.True(t, b.Update(l, 17))
+	assert.True(t, b.Update(l, 18))
+	assert.True(t, b.Update(l, 19))
+	assert.Equal(t, int64(8), b.lostCounter.Count())
 
-	// We missed packet 8 above and that loss is still recorded once, never
-	// double-counted, never zeroed.
-	assert.Equal(t, int64(1), b.lostCounter.Count())
+	// Jump ahead by a window size
+	assert.True(t, b.Update(l, 29))
+	assert.Equal(t, int64(8), b.lostCounter.Count())
+	// Now lets walk ahead normally through the window, the missed packets should fill in
+	assert.True(t, b.Update(l, 30))
+	assert.True(t, b.Update(l, 31))
+	assert.True(t, b.Update(l, 32))
+	assert.True(t, b.Update(l, 33))
+	assert.True(t, b.Update(l, 34))
+	assert.True(t, b.Update(l, 35))
+	assert.True(t, b.Update(l, 36))
+	assert.True(t, b.Update(l, 37))
+	assert.True(t, b.Update(l, 38))
+	// 39 packets tracked, 22 seen, 17 lost
+	assert.Equal(t, int64(17), b.lostCounter.Count())
+
+	// Jump ahead by 2 windows, should have recording 1 full window missing
+	assert.True(t, b.Update(l, 58))
+	assert.Equal(t, int64(27), b.lostCounter.Count())
+	// Now lets walk ahead normally through the window, the missed packets should fill in from this window
+	assert.True(t, b.Update(l, 59))
+	assert.True(t, b.Update(l, 60))
+	assert.True(t, b.Update(l, 61))
+	assert.True(t, b.Update(l, 62))
+	assert.True(t, b.Update(l, 63))
+	assert.True(t, b.Update(l, 64))
+	assert.True(t, b.Update(l, 65))
+	assert.True(t, b.Update(l, 66))
+	assert.True(t, b.Update(l, 67))
+	// 68 packets tracked, 32 seen, 36 missed
+	assert.Equal(t, int64(36), b.lostCounter.Count())
 	assert.Equal(t, int64(0), b.dupeCounter.Count())
 	assert.Equal(t, int64(0), b.outOfWindowCounter.Count())
 }
 
-// TestBitsWarmupOvershoot exercises the jump path's warmup arm with an
-// overshoot past one full window. NewBits leaves current=0 with only slot 0
-// "set" by the marker. Jumping straight to length+k must (a) clear every
-// slot the jump straddles, (b) count only past-window slack (not the
-// in-window slots, which never had a "lost" tenant during warmup), and
-// (c) leave the cursor at the new counter so subsequent unit advances
-// count from steady state. The marker bit at slot 0 is irrelevant once
-// current >= length.
-func TestBitsWarmupOvershoot(t *testing.T) {
-	l := test.NewLogger()
-	b := NewBits(16)
-	b.lostCounter.Clear()
-
-	// Jump from current=0 to i=20 (length=16, overshoot=4).
-	// Warmup arm: counts slots in [1..16] where bit unset and n>length.
-	// Only n=16 was unset and >length: but slot 16%16=0 is the marker,
-	// so b.get(16) reads bits[0]=1 and skips. Result: 0 lost from the loop.
-	// Past-window: i - current - length = 20 - 0 - 16 = 4 lost.
-	assert.True(t, b.Update(l, 20))
-	assert.Equal(t, int64(4), b.lostCounter.Count())
-	assert.Equal(t, uint64(20), b.current)
-
-	// Steady state now (current=20 >= length=16). Unit advance to 21
-	// stomps slot 21%16=5, which was cleared by the jump and not reset,
-	// so this is +1 lost.
-	assert.True(t, b.Update(l, 21))
-	assert.Equal(t, int64(5), b.lostCounter.Count())
-}
-
-// TestBitsCheckAcrossWarmupBoundary pins the underflow trick in Check's
-// in-window clause. While in warmup, b.current-b.length underflows uint64
-// to a huge value so the first OR-clause is always false; the second
-// clause (i < length && current < length) carries the in-window check.
-// Once current >= length the regimes flip cleanly.
-func TestBitsCheckAcrossWarmupBoundary(t *testing.T) {
-	l := test.NewLogger()
-	b := NewBits(16)
-
-	// Warmup: current=0. Check(0) must read the marker (set) and return false.
-	assert.False(t, b.Check(l, 0), "marker slot should look already-received")
-	// Warmup: any 0 < i < length is in-window and unset → accepted.
-	for i := uint64(1); i < 16; i++ {
-		assert.True(t, b.Check(l, i), "warmup in-window i=%d should be accepted", i)
-	}
-	// Warmup: i >= length but > current is "next number" so accepted.
-	assert.True(t, b.Check(l, 16))
-	assert.True(t, b.Check(l, 1_000_000))
-
-	// Cross into steady state.
-	assert.True(t, b.Update(l, 100))
-	// Now current=100, length=16. In-window range is [85..100].
-	// 84 is just outside: the underflow clause activates; 84 > 100-16=84 is false.
-	// And the warmup clause is false (current >= length). So out of window.
-	assert.False(t, b.Check(l, 84))
-	// 85 sits at the boundary. 85 > 84 is true → in window, unset → accept.
-	assert.True(t, b.Check(l, 85))
-	// 100 is current itself; not strictly greater, in-window, but already set.
-	assert.False(t, b.Check(l, 100))
-	// Way out: clearly out of window.
-	assert.False(t, b.Check(l, 50))
-}
-
-// TestBitsMarkerInvariant verifies the seeded bits[0]=1 marker behaves
-// correctly across warmup and beyond. Update should never clear the marker
-// during warmup (clearRange skips position 0 when startPos=1), and once
-// current >= length the marker is no longer consulted by Check/Update on
-// the live path — but it must still report counter 0 as a duplicate while
-// we are in warmup.
-func TestBitsMarkerInvariant(t *testing.T) {
-	l := test.NewLogger()
-	b := NewBits(8)
-
-	// Counter 0 is the seeded marker; Check sees it as already received.
-	assert.False(t, b.Check(l, 0))
-	// Update(0) at current=0 hits the duplicate branch.
-	b.dupeCounter.Clear()
-	assert.False(t, b.Update(l, 0))
-	assert.Equal(t, int64(1), b.dupeCounter.Count())
-
-	// Walk forward through warmup; the marker must remain set.
-	for n := uint64(1); n <= 7; n++ {
-		assert.True(t, b.Update(l, n))
-	}
-	// Position 0 (the marker) should still read as set because we never
-	// cleared it; Update(0) still looks like a duplicate.
-	assert.False(t, b.Check(l, 0))
-
-	// Cross into steady state with a unit advance to 8: pos=0, evicts the
-	// marker bit. The lost-counter guard (i > b.length) is false (8 == 8),
-	// so this advance does NOT charge a lost packet — exactly what the
-	// marker is there to prevent.
-	b.lostCounter.Clear()
-	assert.True(t, b.Update(l, 8))
-	assert.Equal(t, int64(0), b.lostCounter.Count())
-	// The slot at pos 0 is now occupied by counter 8.
-	assert.False(t, b.Check(l, 8))
-}
-
-// BenchmarkBitsUpdateInOrder is the steady-state hot path: each call is
-// i == current+1.
-func BenchmarkBitsUpdateInOrder(b *testing.B) {
-	l := test.NewLogger()
-	z := NewBits(16384)
+func BenchmarkBits(b *testing.B) {
+	z := NewBits(10)
 	for n := 0; n < b.N; n++ {
-		z.Update(l, uint64(n)+1)
-	}
-}
+		for i := range z.bits {
+			z.bits[i] = true
+		}
+		for i := range z.bits {
+			z.bits[i] = false
+		}
 
-// BenchmarkBitsUpdateReorder simulates light reorder within the window:
-// every other packet arrives one slot behind its predecessor (forces the
-// in-window backfill branch).
-func BenchmarkBitsUpdateReorder(b *testing.B) {
-	l := test.NewLogger()
-	z := NewBits(16384)
-	for n := 0; n < b.N; n++ {
-		base := uint64(n) * 2
-		z.Update(l, base+2)
-		z.Update(l, base+1)
-	}
-}
-
-// BenchmarkBitsUpdateLargeJumps stresses the clearRange word-level path.
-func BenchmarkBitsUpdateLargeJumps(b *testing.B) {
-	l := test.NewLogger()
-	z := NewBits(16384)
-	for n := 0; n < b.N; n++ {
-		z.Update(l, uint64(n+1)*1000)
 	}
 }

boring.go

@@ -1,4 +1,5 @@
 //go:build boringcrypto
+// +build boringcrypto
 
 package nebula
 

cert/ca_pool.go

@@ -1,14 +1,11 @@
 package cert
 
 import (
-	"bufio"
-	"bytes"
-	"encoding/pem"
 	"errors"
 	"fmt"
-	"io"
 	"net/netip"
 	"slices"
+	"strings"
 	"time"
 )
 
@@ -32,46 +29,22 @@ func NewCAPool() *CAPool {
 // If the pool contains any expired certificates, an ErrExpired will be
 // returned along with the pool. The caller must handle any such errors.
 func NewCAPoolFromPEM(caPEMs []byte) (*CAPool, error) {
-	return NewCAPoolFromPEMReader(bytes.NewReader(caPEMs))
-}
-
-// NewCAPoolFromPEMReader will create a new CA pool from the provided reader.
-// The reader must contain a PEM-encoded set of nebula certificates.
-func NewCAPoolFromPEMReader(r io.Reader) (*CAPool, error) {
 	pool := NewCAPool()
-
+	var err error
 	var expired bool
-
-	scanner := bufio.NewScanner(r)
-	scanner.Split(SplitPEM)
-
-	for scanner.Scan() {
-		pemBytes := scanner.Bytes()
-
-		block, rest := pem.Decode(pemBytes)
-		if len(bytes.TrimSpace(rest)) > 0 {
-			return nil, ErrInvalidPEMBlock
+	for {
+		caPEMs, err = pool.AddCAFromPEM(caPEMs)
+		if errors.Is(err, ErrExpired) {
+			expired = true
+			err = nil
 		}
-		if block == nil {
-			return nil, ErrInvalidPEMBlock
-		}
-
-		c, err := unmarshalCertificateBlock(block)
 		if err != nil {
 			return nil, err
 		}
-
-		err = pool.AddCA(c)
-		if errors.Is(err, ErrExpired) {
-			expired = true
-			continue
-		} else if err != nil {
-			return nil, err
+		if len(caPEMs) == 0 || strings.TrimSpace(string(caPEMs)) == "" {
+			break
 		}
 	}
-	if err := scanner.Err(); err != nil {
-		return nil, ErrInvalidPEMBlock
-	}
 
 	if expired {
 		return pool, ErrExpired
@@ -168,23 +141,10 @@ func (ncp *CAPool) VerifyCertificate(now time.Time, c Certificate) (*CachedCerti
 		return nil, err
 	}
 
-	// Pre nebula v1.10.3 could generate signatures in either high or low s form and validation
-	// of signatures allowed for either. Nebula v1.10.3 and beyond clamps signature generation to low-s form
-	// but validation still allows for either. Since a change in the signature bytes affects the fingerprint, we
-	// need to test both forms until such a time comes that we enforce low-s form on signature validation.
-	fp2, err := CalculateAlternateFingerprint(c)
-	if err != nil {
-		return nil, fmt.Errorf("could not calculate alternate fingerprint to verify: %w", err)
-	}
-	if fp2 != "" && ncp.IsBlocklisted(fp2) {
-		return nil, ErrBlockListed
-	}
-
 	cc := CachedCertificate{
 		Certificate:       c,
 		InvertedGroups:    make(map[string]struct{}),
 		Fingerprint:       fp,
-		fingerprint2:      fp2,
 		signerFingerprint: signer.Fingerprint,
 	}
 
@@ -198,11 +158,6 @@ func (ncp *CAPool) VerifyCertificate(now time.Time, c Certificate) (*CachedCerti
 // VerifyCachedCertificate is the same as VerifyCertificate other than it operates on a pre-verified structure and
 // is a cheaper operation to perform as a result.
 func (ncp *CAPool) VerifyCachedCertificate(now time.Time, c *CachedCertificate) error {
-	// Check any available alternate fingerprint forms for this certificate, re P256 high-s/low-s
-	if c.fingerprint2 != "" && ncp.IsBlocklisted(c.fingerprint2) {
-		return ErrBlockListed
-	}
-
 	_, err := ncp.verify(c.Certificate, now, c.Fingerprint, c.signerFingerprint)
 	return err
 }
@@ -217,10 +172,6 @@ func (ncp *CAPool) verify(c Certificate, now time.Time, certFp string, signerFp
 		return nil, err
 	}
 
-	if signer.Certificate.Curve() != c.Curve() {
-		return nil, ErrCurveMismatch
-	}
-
 	if signer.Certificate.Expired(now) {
 		return nil, ErrRootExpired
 	}

cert/ca_pool_test.go

@@ -1,14 +1,10 @@
 package cert
 
 import (
-	"bytes"
-	"io"
 	"net/netip"
-	"strings"
 	"testing"
 	"time"
 
-	"github.com/slackhq/nebula/cert/p256"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -115,60 +111,6 @@ k+coOv04r+zh33ISyhbsafnYduN17p2eD7CmHvHuerguXD9f32gcxo/KsFCKEjMe
 	assert.Len(t, ppppp.CAs, 1)
 }
 
-// oneByteReader wraps a reader to return at most 1 byte per Read call,
-// exercising the streaming accumulation logic in NewCAPoolFromPEMReader.
-type oneByteReader struct {
-	r io.Reader
-}
-
-func (o *oneByteReader) Read(p []byte) (int, error) {
-	if len(p) == 0 {
-		return 0, nil
-	}
-	return o.r.Read(p[:1])
-}
-
-func TestNewCAPoolFromPEMReader_EmptyReader(t *testing.T) {
-	pool, err := NewCAPoolFromPEMReader(bytes.NewReader(nil))
-	require.NoError(t, err)
-	assert.Empty(t, pool.CAs)
-
-	pool, err = NewCAPoolFromPEMReader(strings.NewReader("   \n\t\n  "))
-	require.NoError(t, err)
-	assert.Empty(t, pool.CAs)
-}
-
-func TestNewCAPoolFromPEMReader_OneByteReads(t *testing.T) {
-	ca1, _, _, pem1 := NewTestCaCert(Version2, Curve_CURVE25519, time.Now(), time.Now().Add(time.Hour), nil, nil, nil)
-	ca2, _, _, pem2 := NewTestCaCert(Version2, Curve_CURVE25519, time.Now(), time.Now().Add(time.Hour), nil, nil, nil)
-
-	bundle := append(pem1, pem2...)
-	pool, err := NewCAPoolFromPEMReader(&oneByteReader{r: bytes.NewReader(bundle)})
-	require.NoError(t, err)
-	assert.Len(t, pool.CAs, 2)
-
-	fp1, err := ca1.Fingerprint()
-	require.NoError(t, err)
-	fp2, err := ca2.Fingerprint()
-	require.NoError(t, err)
-
-	assert.Contains(t, pool.CAs, fp1)
-	assert.Contains(t, pool.CAs, fp2)
-}
-
-func TestNewCAPoolFromPEMReader_TruncatedPEM(t *testing.T) {
-	_, err := NewCAPoolFromPEMReader(strings.NewReader("-----BEGIN NEBULA CERTIFICATE-----\npartialdata"))
-	assert.ErrorIs(t, err, ErrInvalidPEMBlock)
-}
-
-func TestNewCAPoolFromPEMReader_TrailingGarbage(t *testing.T) {
-	_, _, _, pem1 := NewTestCaCert(Version2, Curve_CURVE25519, time.Now(), time.Now().Add(time.Hour), nil, nil, nil)
-
-	bundle := append(pem1, []byte("some trailing garbage")...)
-	_, err := NewCAPoolFromPEMReader(bytes.NewReader(bundle))
-	assert.ErrorIs(t, err, ErrInvalidPEMBlock)
-}
-
 func TestCertificateV1_Verify(t *testing.T) {
 	ca, _, caKey, _ := NewTestCaCert(Version1, Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, nil)
 	c, _, _, _ := NewTestCert(Version1, Curve_CURVE25519, ca, caKey, "test cert", time.Now(), time.Now().Add(5*time.Minute), nil, nil, nil)
@@ -228,15 +170,6 @@ func TestCertificateV1_VerifyP256(t *testing.T) {
 	_, err = caPool.VerifyCertificate(time.Now(), c)
 	require.EqualError(t, err, "certificate is in the block list")
 
-	// Create a copy of the cert and swap to the alternate form for the signature
-	nc := c.Copy()
-	b, err := p256.Swap(c.Signature())
-	require.NoError(t, err)
-	require.NoError(t, nc.(*certificateV1).setSignature(b))
-
-	_, err = caPool.VerifyCertificate(time.Now(), nc)
-	require.EqualError(t, err, "certificate is in the block list")
-
 	caPool.ResetCertBlocklist()
 	_, err = caPool.VerifyCertificate(time.Now(), c)
 	require.NoError(t, err)
@@ -254,7 +187,7 @@ func TestCertificateV1_VerifyP256(t *testing.T) {
 	require.NoError(t, err)
 
 	caPool = NewCAPool()
-	b, err = caPool.AddCAFromPEM(caPem)
+	b, err := caPool.AddCAFromPEM(caPem)
 	require.NoError(t, err)
 	assert.Empty(t, b)
 
@@ -263,17 +196,7 @@ func TestCertificateV1_VerifyP256(t *testing.T) {
 	})
 
 	c, _, _, _ = NewTestCert(Version1, Curve_P256, ca, caKey, "test", time.Now(), time.Now().Add(5*time.Minute), nil, nil, []string{"test1"})
-	cc, err := caPool.VerifyCertificate(time.Now(), c)
-	require.NoError(t, err)
-
-	// Reset the blocklist and block the alternate form fingerprint
-	caPool.ResetCertBlocklist()
-	caPool.BlocklistFingerprint(cc.fingerprint2)
-	err = caPool.VerifyCachedCertificate(time.Now(), cc)
-	require.EqualError(t, err, "certificate is in the block list")
-
-	caPool.ResetCertBlocklist()
-	err = caPool.VerifyCachedCertificate(time.Now(), cc)
+	_, err = caPool.VerifyCertificate(time.Now(), c)
 	require.NoError(t, err)
 }
 
@@ -471,15 +394,6 @@ func TestCertificateV2_VerifyP256(t *testing.T) {
 	_, err = caPool.VerifyCertificate(time.Now(), c)
 	require.EqualError(t, err, "certificate is in the block list")
 
-	// Create a copy of the cert and swap to the alternate form for the signature
-	nc := c.Copy()
-	b, err := p256.Swap(c.Signature())
-	require.NoError(t, err)
-	require.NoError(t, nc.(*certificateV2).setSignature(b))
-
-	_, err = caPool.VerifyCertificate(time.Now(), nc)
-	require.EqualError(t, err, "certificate is in the block list")
-
 	caPool.ResetCertBlocklist()
 	_, err = caPool.VerifyCertificate(time.Now(), c)
 	require.NoError(t, err)
@@ -497,7 +411,7 @@ func TestCertificateV2_VerifyP256(t *testing.T) {
 	require.NoError(t, err)
 
 	caPool = NewCAPool()
-	b, err = caPool.AddCAFromPEM(caPem)
+	b, err := caPool.AddCAFromPEM(caPem)
 	require.NoError(t, err)
 	assert.Empty(t, b)
 
@@ -506,17 +420,7 @@ func TestCertificateV2_VerifyP256(t *testing.T) {
 	})
 
 	c, _, _, _ = NewTestCert(Version2, Curve_P256, ca, caKey, "test", time.Now(), time.Now().Add(5*time.Minute), nil, nil, []string{"test1"})
-	cc, err := caPool.VerifyCertificate(time.Now(), c)
-	require.NoError(t, err)
-
-	// Reset the blocklist and block the alternate form fingerprint
-	caPool.ResetCertBlocklist()
-	caPool.BlocklistFingerprint(cc.fingerprint2)
-	err = caPool.VerifyCachedCertificate(time.Now(), cc)
-	require.EqualError(t, err, "certificate is in the block list")
-
-	caPool.ResetCertBlocklist()
-	err = caPool.VerifyCachedCertificate(time.Now(), cc)
+	_, err = caPool.VerifyCertificate(time.Now(), c)
 	require.NoError(t, err)
 }
 
@@ -654,31 +558,3 @@ func TestCertificateV2_Verify_Subnets(t *testing.T) {
 	_, err = caPool.VerifyCertificate(time.Now(), c)
 	require.NoError(t, err)
 }
-
-func TestCertificateV2_CurveMismatch(t *testing.T) {
-	caIp1 := mustParsePrefixUnmapped("10.0.0.0/16")
-	caIp2 := mustParsePrefixUnmapped("192.168.0.0/24")
-	ca, _, caKey, _ := NewTestCaCert(Version2, Curve_P256, time.Now(), time.Now().Add(10*time.Minute), []netip.Prefix{caIp1, caIp2}, nil, []string{"test"})
-
-	caPem, err := ca.MarshalPEM()
-	require.NoError(t, err)
-
-	caPool := NewCAPool()
-	b, err := caPool.AddCAFromPEM(caPem)
-	require.NoError(t, err)
-	assert.Empty(t, b)
-
-	// ip is outside the network
-	cIp1 := mustParsePrefixUnmapped("10.0.0.1/24")
-	c, _, _, _ := NewTestCert(Version2, Curve_P256, ca, caKey, "test", time.Now(), time.Now().Add(5*time.Minute), []netip.Prefix{cIp1}, nil, []string{"test"})
-
-	fp, _ := c.Fingerprint()
-	_, err = caPool.verify(c, time.Now(), fp, c.Issuer())
-	require.NoError(t, err)
-	//
-	c2 := c.(*certificateV2)
-	c2.curve = Curve_CURVE25519
-	fp, _ = c.Fingerprint()
-	_, err = caPool.verify(c, time.Now(), fp, c.Issuer())
-	require.Error(t, err)
-}

cert/cert.go

@@ -4,8 +4,6 @@ import (
 	"fmt"
 	"net/netip"
 	"time"
-
-	"github.com/slackhq/nebula/cert/p256"
 )
 
 type Version uint8
@@ -112,9 +110,6 @@ type CachedCertificate struct {
 	InvertedGroups    map[string]struct{}
 	Fingerprint       string
 	signerFingerprint string
-
-	// A place to store a 2nd fingerprint if the certificate could have one, such as with P256
-	fingerprint2 string
 }
 
 func (cc *CachedCertificate) String() string {
@@ -124,7 +119,6 @@ func (cc *CachedCertificate) String() string {
 // Recombine will attempt to unmarshal a certificate received in a handshake.
 // Handshakes save space by placing the peers public key in a different part of the packet, we have to
 // reassemble the actual certificate structure with that in mind.
-// Implementations MUST assert the public key is not in the raw certificate bytes if the passed in public key is not empty.
 func Recombine(v Version, rawCertBytes, publicKey []byte, curve Curve) (Certificate, error) {
 	if publicKey == nil {
 		return nil, ErrNoPeerStaticKey
@@ -157,31 +151,3 @@ func Recombine(v Version, rawCertBytes, publicKey []byte, curve Curve) (Certific
 
 	return c, nil
 }
-
-// CalculateAlternateFingerprint calculates a 2nd fingerprint representation for P256 certificates
-// CAPool blocklist testing through `VerifyCertificate` and `VerifyCachedCertificate` automatically performs this step.
-func CalculateAlternateFingerprint(c Certificate) (string, error) {
-	if c.Curve() != Curve_P256 {
-		return "", nil
-	}
-
-	nc := c.Copy()
-	b, err := p256.Swap(nc.Signature())
-	if err != nil {
-		return "", err
-	}
-
-	switch v := nc.(type) {
-	case *certificateV1:
-		err = v.setSignature(b)
-	case *certificateV2:
-		err = v.setSignature(b)
-	default:
-		return "", ErrUnknownVersion
-	}
-
-	if err != nil {
-		return "", err
-	}
-	return nc.Fingerprint()
-}

cert/cert_v1.go

@@ -112,9 +112,6 @@ func (c *certificateV1) CheckSignature(key []byte) bool {
 	}
 	switch c.details.curve {
 	case Curve_CURVE25519:
-		if len(key) != ed25519.PublicKeySize {
-			return false //avoids a panic internal to ed25519
-		}
 		return ed25519.Verify(key, b, c.signature)
 	case Curve_P256:
 		pubKey, err := ecdsa.ParseUncompressedPublicKey(elliptic.P256(), key)
@@ -429,7 +426,7 @@ func unmarshalCertificateV1(b []byte, publicKey []byte) (*certificateV1, error)
 			unsafeNetworks: make([]netip.Prefix, len(rc.Details.Subnets)/2),
 			notBefore:      time.Unix(rc.Details.NotBefore, 0),
 			notAfter:       time.Unix(rc.Details.NotAfter, 0),
-			publicKey:      nil,
+			publicKey:      make([]byte, len(rc.Details.PublicKey)),
 			isCA:           rc.Details.IsCA,
 			curve:          rc.Details.Curve,
 		},
@@ -440,19 +437,12 @@ func unmarshalCertificateV1(b []byte, publicKey []byte) (*certificateV1, error)
 	copy(nc.details.groups, rc.Details.Groups)
 	nc.details.issuer = hex.EncodeToString(rc.Details.Issuer)
 
-	// If a public key is passed in as an argument, the certificate pubkey must be empty
-	// and the passed-in pubkey copied into the cert.
 	if len(publicKey) > 0 {
-		if len(rc.Details.PublicKey) != 0 {
-			return nil, ErrCertPubkeyPresent
-		}
-		nc.details.publicKey = make([]byte, len(publicKey))
-		copy(nc.details.publicKey, publicKey)
-	} else {
-		nc.details.publicKey = make([]byte, len(rc.Details.PublicKey))
-		copy(nc.details.publicKey, rc.Details.PublicKey)
+		nc.details.publicKey = publicKey
 	}
 
+	copy(nc.details.publicKey, rc.Details.PublicKey)
+
 	var ip netip.Addr
 	for i, rawIp := range rc.Details.Ips {
 		if i%2 == 0 {

cert/cert_v1_test.go

@@ -62,62 +62,6 @@ func TestCertificateV1_Marshal(t *testing.T) {
 	assert.Equal(t, nc.Groups(), nc2.Groups())
 }
 
-func TestCertificateV1_Unmarshal(t *testing.T) {
-	t.Parallel()
-	before := time.Now().Add(time.Second * -60).Round(time.Second)
-	after := time.Now().Add(time.Second * 60).Round(time.Second)
-	pubKey := []byte("1234567890abcedfghij1234567890ab")
-	invalidPubkey := []byte("00000000000000000000000000000000")
-
-	nc := certificateV1{
-		details: detailsV1{
-			name: "testing",
-			networks: []netip.Prefix{
-				mustParsePrefixUnmapped("10.1.1.1/24"),
-				mustParsePrefixUnmapped("10.1.1.2/16"),
-			},
-			unsafeNetworks: []netip.Prefix{
-				mustParsePrefixUnmapped("9.1.1.2/24"),
-				mustParsePrefixUnmapped("9.1.1.3/16"),
-			},
-			groups:    []string{"test-group1", "test-group2", "test-group3"},
-			notBefore: before,
-			notAfter:  after,
-			publicKey: pubKey,
-			isCA:      false,
-			issuer:    "1234567890abcedfghij1234567890ab",
-		},
-		signature: []byte("1234567890abcedfghij1234567890ab"),
-	}
-
-	// This certificate has a pubkey included
-	certWithPubkey, err := nc.Marshal()
-	require.NoError(t, err)
-
-	// This certificate is missing the pubkey section
-	certWithoutPubkey, err := nc.MarshalForHandshakes()
-	require.NoError(t, err)
-
-	// Cert has no pubkey and no pubkey passed in must fail to validate
-	isNil, err := unmarshalCertificateV1(certWithoutPubkey, nil)
-	require.Error(t, err)
-
-	// Cert has different pubkey than one passed in must fail
-	isNil, err = unmarshalCertificateV1(certWithPubkey, invalidPubkey)
-	require.Nil(t, isNil)
-	require.Error(t, err)
-
-	// Cert has pubkey and no pubkey argument works ok
-	_, err = unmarshalCertificateV1(certWithPubkey, nil)
-	require.NoError(t, err)
-
-	// Cert has no pubkey and valid, correctly signed pubkey passed in
-	nc2, err := unmarshalCertificateV1(certWithoutPubkey, pubKey)
-	require.NoError(t, err)
-
-	assert.Equal(t, pubKey, nc2.PublicKey())
-}
-
 func TestCertificateV1_PublicKeyPem(t *testing.T) {
 	t.Parallel()
 	before := time.Now().Add(time.Second * -60).Round(time.Second)
@@ -155,19 +99,13 @@ func TestCertificateV1_PublicKeyPem(t *testing.T) {
 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
 AAAAAAAAAAAAAAAAAAAAAAA=
 -----END NEBULA P256 PUBLIC KEY-----
-`)
-
-	pubP256KeyPemCA := []byte(`-----BEGIN NEBULA ECDSA P256 PUBLIC KEY-----
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAA=
------END NEBULA ECDSA P256 PUBLIC KEY-----
 `)
 	pubP256Key, _, _, err := UnmarshalPublicKeyFromPEM(pubP256KeyPem)
 	require.NoError(t, err)
 	nc.details.curve = Curve_P256
 	nc.details.publicKey = pubP256Key
 	assert.Equal(t, Curve_P256, nc.Curve())
-	assert.Equal(t, string(nc.MarshalPublicKeyPEM()), string(pubP256KeyPemCA))
+	assert.Equal(t, string(nc.MarshalPublicKeyPEM()), string(pubP256KeyPem))
 	assert.True(t, nc.IsCA())
 
 	nc.details.isCA = false

cert/cert_v2.go

@@ -151,9 +151,6 @@ func (c *certificateV2) CheckSignature(key []byte) bool {
 
 	switch c.curve {
 	case Curve_CURVE25519:
-		if len(key) != ed25519.PublicKeySize {
-			return false //avoids a panic internal to ed25519
-		}
 		return ed25519.Verify(key, b, c.signature)
 	case Curve_P256:
 		pubKey, err := ecdsa.ParseUncompressedPublicKey(elliptic.P256(), key)
@@ -595,13 +592,7 @@ func unmarshalCertificateV2(b []byte, publicKey []byte, curve Curve) (*certifica
 	// Maybe grab the public key
 	var rawPublicKey cryptobyte.String
 	if len(publicKey) > 0 {
-		// If a public key is passed in, then the handshake certificate must
-		// not have a public key present
-		if input.PeekASN1Tag(TagCertPublicKey) {
-			return nil, ErrCertPubkeyPresent
-		}
-		rawPublicKey = make(cryptobyte.String, len(publicKey))
-		copy(rawPublicKey, publicKey)
+		rawPublicKey = publicKey
 	} else if !input.ReadOptionalASN1(&rawPublicKey, nil, TagCertPublicKey) {
 		return nil, ErrBadFormat
 	}

cert/cert_v2_test.go

@@ -76,58 +76,6 @@ func TestCertificateV2_Marshal(t *testing.T) {
 	assert.Equal(t, nc.Groups(), nc2.Groups())
 }
 
-func TestCertificateV2_Unmarshal(t *testing.T) {
-	t.Parallel()
-	before := time.Now().Add(time.Second * -60).Round(time.Second)
-	after := time.Now().Add(time.Second * 60).Round(time.Second)
-	pubKey := []byte("1234567890abcedfghij1234567890ab")
-
-	nc := certificateV2{
-		details: detailsV2{
-			name: "testing",
-			networks: []netip.Prefix{
-				mustParsePrefixUnmapped("10.1.1.2/16"),
-				mustParsePrefixUnmapped("10.1.1.1/24"),
-			},
-			unsafeNetworks: []netip.Prefix{
-				mustParsePrefixUnmapped("9.1.1.3/16"),
-				mustParsePrefixUnmapped("9.1.1.2/24"),
-			},
-			groups:    []string{"test-group1", "test-group2", "test-group3"},
-			notBefore: before,
-			notAfter:  after,
-			isCA:      false,
-			issuer:    "1234567890abcdef1234567890abcdef",
-		},
-		signature: []byte("1234567890abcdef1234567890abcdef"),
-		publicKey: pubKey,
-	}
-
-	db, err := nc.details.Marshal()
-	require.NoError(t, err)
-	nc.rawDetails = db
-
-	certWithPubkey, err := nc.Marshal()
-	require.NoError(t, err)
-	//t.Log("Cert size:", len(b))
-	certWithoutPubkey, err := nc.MarshalForHandshakes()
-	require.NoError(t, err)
-
-	// Cert must not have a pubkey if one is passed in as an argument
-	_, err = unmarshalCertificateV2(certWithPubkey, pubKey, Curve_CURVE25519)
-	require.ErrorIs(t, err, ErrCertPubkeyPresent)
-
-	// Certs must have pubkeys
-	_, err = unmarshalCertificateV2(certWithoutPubkey, nil, Curve_CURVE25519)
-	require.ErrorIs(t, err, ErrBadFormat)
-
-	// Ensure proper unmarshal if a pubkey is passed in
-	nc2, err := unmarshalCertificateV2(certWithoutPubkey, pubKey, Curve_CURVE25519)
-	require.NoError(t, err)
-
-	assert.Equal(t, nc.PublicKey(), nc2.PublicKey())
-}
-
 func TestCertificateV2_PublicKeyPem(t *testing.T) {
 	t.Parallel()
 	before := time.Now().Add(time.Second * -60).Round(time.Second)
@@ -166,19 +114,12 @@ AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
 AAAAAAAAAAAAAAAAAAAAAAA=
 -----END NEBULA P256 PUBLIC KEY-----
 `)
-
-	pubP256KeyPemCA := []byte(`-----BEGIN NEBULA ECDSA P256 PUBLIC KEY-----
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAA=
------END NEBULA ECDSA P256 PUBLIC KEY-----
-`)
-
 	pubP256Key, _, _, err := UnmarshalPublicKeyFromPEM(pubP256KeyPem)
 	require.NoError(t, err)
 	nc.curve = Curve_P256
 	nc.publicKey = pubP256Key
 	assert.Equal(t, Curve_P256, nc.Curve())
-	assert.Equal(t, string(nc.MarshalPublicKeyPEM()), string(pubP256KeyPemCA))
+	assert.Equal(t, string(nc.MarshalPublicKeyPEM()), string(pubP256KeyPem))
 	assert.True(t, nc.IsCA())
 
 	nc.details.isCA = false

cert/crypto_test.go

@@ -79,7 +79,7 @@ qrlJ69wer3ZUHFXA
 	assert.Nil(t, k)
 	assert.Equal(t, rest, invalidPem)
 
-	// Fail due to invalid PEM format, because
+	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
 	curve, k, rest, err = DecryptAndUnmarshalSigningPrivateKey(passphrase, rest)
 	require.EqualError(t, err, "input did not contain a valid PEM encoded block")

cert/errors.go

@@ -21,8 +21,6 @@ var (
 	ErrPrivateKeyEncrypted        = errors.New("private key must be decrypted")
 	ErrCaNotFound                 = errors.New("could not find ca for the certificate")
 	ErrUnknownVersion             = errors.New("certificate version unrecognized")
-	ErrCertPubkeyPresent          = errors.New("certificate has unexpected pubkey present")
-	ErrCurveMismatch              = errors.New("certificate curve does not match CA")
 
 	ErrInvalidPEMBlock                   = errors.New("input did not contain a valid PEM encoded block")
 	ErrInvalidPEMCertificateBanner       = errors.New("bytes did not contain a proper certificate banner")

cert/helper_test.go

@@ -13,12 +13,6 @@ import (
 	"golang.org/x/crypto/ed25519"
 )
 
-// testCertNow is the reference "now" used to derive default before/after times
-// in NewTestCaCert and NewTestCert. Holding it fixed for the lifetime of the
-// test binary keeps CA and leaf defaults aligned at the same second, so a leaf
-// signed with default times can never expire after its CA on a rounding race.
-var testCertNow = time.Now().Round(time.Second)
-
 // NewTestCaCert will create a new ca certificate
 func NewTestCaCert(version Version, curve Curve, before, after time.Time, networks, unsafeNetworks []netip.Prefix, groups []string) (Certificate, []byte, []byte, []byte) {
 	var err error
@@ -40,10 +34,10 @@ func NewTestCaCert(version Version, curve Curve, before, after time.Time, networ
 	}
 
 	if before.IsZero() {
-		before = testCertNow.Add(time.Second * -60)
+		before = time.Now().Add(time.Second * -60).Round(time.Second)
 	}
 	if after.IsZero() {
-		after = testCertNow.Add(time.Second * 60)
+		after = time.Now().Add(time.Second * 60).Round(time.Second)
 	}
 
 	t := &TBSCertificate{
@@ -76,11 +70,11 @@ func NewTestCaCert(version Version, curve Curve, before, after time.Time, networ
 // Expiry times are defaulted if you do not pass them in
 func NewTestCert(v Version, curve Curve, ca Certificate, key []byte, name string, before, after time.Time, networks, unsafeNetworks []netip.Prefix, groups []string) (Certificate, []byte, []byte, []byte) {
 	if before.IsZero() {
-		before = testCertNow.Add(time.Second * -60)
+		before = time.Now().Add(time.Second * -60).Round(time.Second)
 	}
 
 	if after.IsZero() {
-		after = testCertNow.Add(time.Second * 60)
+		after = time.Now().Add(time.Second * 60).Round(time.Second)
 	}
 
 	if len(networks) == 0 {

cert/p256/p256.go

@@ -1,127 +0,0 @@
-package p256
-
-import (
-	"crypto/elliptic"
-	"errors"
-	"math/big"
-
-	"filippo.io/bigmod"
-
-	"golang.org/x/crypto/cryptobyte"
-	"golang.org/x/crypto/cryptobyte/asn1"
-)
-
-var halfN = new(big.Int).Rsh(elliptic.P256().Params().N, 1)
-var nMod *bigmod.Modulus
-
-func init() {
-	n, err := bigmod.NewModulus(elliptic.P256().Params().N.Bytes())
-	if err != nil {
-		panic(err)
-	}
-	nMod = n
-}
-
-func IsNormalized(sig []byte) (bool, error) {
-	r, s, err := parseSignature(sig)
-	if err != nil {
-		return false, err
-	}
-	return checkLowS(r, s), nil
-}
-
-func checkLowS(_, s []byte) bool {
-	bigS := new(big.Int).SetBytes(s)
-	// Check if S <= (N/2), because we want to include the midpoint in the set of low-s
-	return bigS.Cmp(halfN) <= 0
-}
-
-func swap(r, s []byte) ([]byte, []byte, error) {
-	var err error
-	bigS, err := bigmod.NewNat().SetBytes(s, nMod)
-	if err != nil {
-		return nil, nil, err
-	}
-	sNormalized := nMod.Nat().Sub(bigS, nMod)
-
-	result := sNormalized.Bytes(nMod)
-	for len(result) > 1 && result[0] == 0 {
-		result = result[1:]
-	}
-
-	return r, result, nil
-}
-
-func Normalize(sig []byte) ([]byte, error) {
-	r, s, err := parseSignature(sig)
-	if err != nil {
-		return nil, err
-	}
-
-	if checkLowS(r, s) {
-		return sig, nil
-	}
-
-	newR, newS, err := swap(r, s)
-	if err != nil {
-		return nil, err
-	}
-
-	return encodeSignature(newR, newS)
-}
-
-// Swap will change sig between its current form to the opposite high or low form.
-func Swap(sig []byte) ([]byte, error) {
-	r, s, err := parseSignature(sig)
-	if err != nil {
-		return nil, err
-	}
-
-	newR, newS, err := swap(r, s)
-	if err != nil {
-		return nil, err
-	}
-
-	return encodeSignature(newR, newS)
-}
-
-// parseSignature taken exactly from crypto/ecdsa/ecdsa.go
-func parseSignature(sig []byte) (r, s []byte, err error) {
-	var inner cryptobyte.String
-	input := cryptobyte.String(sig)
-	if !input.ReadASN1(&inner, asn1.SEQUENCE) ||
-		!input.Empty() ||
-		!inner.ReadASN1Integer(&r) ||
-		!inner.ReadASN1Integer(&s) ||
-		!inner.Empty() {
-		return nil, nil, errors.New("invalid ASN.1")
-	}
-	return r, s, nil
-}
-
-func encodeSignature(r, s []byte) ([]byte, error) {
-	var b cryptobyte.Builder
-	b.AddASN1(asn1.SEQUENCE, func(b *cryptobyte.Builder) {
-		addASN1IntBytes(b, r)
-		addASN1IntBytes(b, s)
-	})
-	return b.Bytes()
-}
-
-// addASN1IntBytes encodes in ASN.1 a positive integer represented as
-// a big-endian byte slice with zero or more leading zeroes.
-func addASN1IntBytes(b *cryptobyte.Builder, bytes []byte) {
-	for len(bytes) > 0 && bytes[0] == 0 {
-		bytes = bytes[1:]
-	}
-	if len(bytes) == 0 {
-		b.SetError(errors.New("invalid integer"))
-		return
-	}
-	b.AddASN1(asn1.INTEGER, func(c *cryptobyte.Builder) {
-		if bytes[0]&0x80 != 0 {
-			c.AddUint8(0)
-		}
-		c.AddBytes(bytes)
-	})
-}

cert/p256/p256_test.go

@@ -1,28 +0,0 @@
-package p256
-
-import (
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rand"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestFlipping(t *testing.T) {
-	priv, err1 := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	require.NoError(t, err1)
-
-	out, err := ecdsa.SignASN1(rand.Reader, priv, []byte("big chungus"))
-	require.NoError(t, err)
-
-	r, s, err := parseSignature(out)
-	require.NoError(t, err)
-
-	r, s1, err := swap(r, s)
-	require.NoError(t, err)
-	r, s2, err := swap(r, s1)
-	require.NoError(t, err)
-	require.Equal(t, s, s2)
-	require.NotEqual(t, s, s1)
-}

cert/pem.go

@@ -1,66 +1,12 @@
 package cert
 
 import (
-	"bytes"
 	"encoding/pem"
-	"errors"
 	"fmt"
 
 	"golang.org/x/crypto/ed25519"
 )
 
-var ErrTruncatedPEMBlock = errors.New("truncated PEM block")
-
-// SplitPEM is a split function for bufio.Scanner that returns each PEM block.
-func SplitPEM(data []byte, atEOF bool) (advance int, token []byte, err error) {
-	// Look for the start of a PEM block
-	start := bytes.Index(data, []byte("-----BEGIN "))
-	if start == -1 {
-		if atEOF && len(bytes.TrimSpace(data)) > 0 {
-			// Non-whitespace content with no PEM block
-			return 0, nil, ErrTruncatedPEMBlock
-		}
-		if atEOF {
-			return len(data), nil, nil
-		}
-		// Request more data
-		return 0, nil, nil
-	}
-
-	// Look for the end marker
-	endMarkerStart := bytes.Index(data[start:], []byte("-----END "))
-	if endMarkerStart == -1 {
-		if atEOF {
-			// Incomplete PEM block at EOF
-			return 0, nil, ErrTruncatedPEMBlock
-		}
-		// Need more data to find the end
-		return 0, nil, nil
-	}
-
-	// Find the actual end of the END line (after the newline)
-	endMarkerStart += start
-	endLineEnd := bytes.IndexByte(data[endMarkerStart:], '\n')
-	var end int
-	if endLineEnd == -1 {
-		if atEOF {
-			// END marker without newline at EOF - take it anyway
-			end = len(data)
-		} else {
-			// Need more data
-			return 0, nil, nil
-		}
-	} else {
-		end = endMarkerStart + endLineEnd + 1
-	}
-
-	// Extract the PEM block
-	pemBlock := data[start:end]
-
-	// Return the valid PEM block
-	return end, pemBlock, nil
-}
-
 const ( //cert banners
 	CertificateBanner   = "NEBULA CERTIFICATE"
 	CertificateV2Banner = "NEBULA CERTIFICATE V2"
@@ -91,7 +37,19 @@ func UnmarshalCertificateFromPEM(b []byte) (Certificate, []byte, error) {
 		return nil, r, ErrInvalidPEMBlock
 	}
 
-	c, err := unmarshalCertificateBlock(p)
+	var c Certificate
+	var err error
+
+	switch p.Type {
+	// Implementations must validate the resulting certificate contains valid information
+	case CertificateBanner:
+		c, err = unmarshalCertificateV1(p.Bytes, nil)
+	case CertificateV2Banner:
+		c, err = unmarshalCertificateV2(p.Bytes, nil, Curve_CURVE25519)
+	default:
+		return nil, r, ErrInvalidPEMCertificateBanner
+	}
+
 	if err != nil {
 		return nil, r, err
 	}
@@ -100,20 +58,6 @@ func UnmarshalCertificateFromPEM(b []byte) (Certificate, []byte, error) {
 
 }
 
-// unmarshalCertificateBlock decodes a single PEM block into a certificate.
-// It expects a Nebula certificate banner and returns ErrInvalidPEMCertificateBanner otherwise.
-func unmarshalCertificateBlock(block *pem.Block) (Certificate, error) {
-	switch block.Type {
-	// Implementations must validate the resulting certificate contains valid information
-	case CertificateBanner:
-		return unmarshalCertificateV1(block.Bytes, nil)
-	case CertificateV2Banner:
-		return unmarshalCertificateV2(block.Bytes, nil, Curve_CURVE25519)
-	default:
-		return nil, ErrInvalidPEMCertificateBanner
-	}
-}
-
 func marshalCertPublicKeyToPEM(c Certificate) []byte {
 	if c.IsCA() {
 		return MarshalSigningPublicKeyToPEM(c.Curve(), c.PublicKey())
@@ -142,7 +86,7 @@ func MarshalSigningPublicKeyToPEM(curve Curve, b []byte) []byte {
 	case Curve_CURVE25519:
 		return pem.EncodeToMemory(&pem.Block{Type: Ed25519PublicKeyBanner, Bytes: b})
 	case Curve_P256:
-		return pem.EncodeToMemory(&pem.Block{Type: ECDSAP256PublicKeyBanner, Bytes: b})
+		return pem.EncodeToMemory(&pem.Block{Type: P256PublicKeyBanner, Bytes: b})
 	default:
 		return nil
 	}

cert/pem_test.go

@@ -1,88 +1,12 @@
 package cert
 
 import (
-	"bufio"
-	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
-func scanAll(t *testing.T, input string) ([]string, error) {
-	t.Helper()
-	scanner := bufio.NewScanner(strings.NewReader(input))
-	scanner.Split(SplitPEM)
-	var blocks []string
-	for scanner.Scan() {
-		blocks = append(blocks, scanner.Text())
-	}
-	return blocks, scanner.Err()
-}
-
-func TestSplitPEM_Single(t *testing.T) {
-	input := "-----BEGIN TEST-----\ndata\n-----END TEST-----\n"
-	blocks, err := scanAll(t, input)
-	require.NoError(t, err)
-	require.Len(t, blocks, 1)
-	require.Equal(t, input, blocks[0])
-}
-
-func TestSplitPEM_Multiple(t *testing.T) {
-	block1 := "-----BEGIN TEST-----\naaa\n-----END TEST-----\n"
-	block2 := "-----BEGIN TEST-----\nbbb\n-----END TEST-----\n"
-	blocks, err := scanAll(t, block1+block2)
-	require.NoError(t, err)
-	require.Len(t, blocks, 2)
-	require.Equal(t, block1, blocks[0])
-	require.Equal(t, block2, blocks[1])
-}
-
-func TestSplitPEM_CommentsAndWhitespaceBetweenBlocks(t *testing.T) {
-	input := "# comment\n\n-----BEGIN TEST-----\naaa\n-----END TEST-----\n\n# another comment\n\n-----BEGIN TEST-----\nbbb\n-----END TEST-----\n"
-	blocks, err := scanAll(t, input)
-	require.NoError(t, err)
-	require.Len(t, blocks, 2)
-}
-
-func TestSplitPEM_Empty(t *testing.T) {
-	blocks, err := scanAll(t, "")
-	require.NoError(t, err)
-	require.Empty(t, blocks)
-}
-
-func TestSplitPEM_WhitespaceOnly(t *testing.T) {
-	blocks, err := scanAll(t, "  \n\t\n  ")
-	require.NoError(t, err)
-	require.Empty(t, blocks)
-}
-
-func TestSplitPEM_TrailingGarbage(t *testing.T) {
-	input := "-----BEGIN TEST-----\ndata\n-----END TEST-----\ngarbage"
-	blocks, err := scanAll(t, input)
-	require.ErrorIs(t, err, ErrTruncatedPEMBlock)
-	require.Len(t, blocks, 1)
-}
-
-func TestSplitPEM_TruncatedBlock(t *testing.T) {
-	input := "-----BEGIN TEST-----\npartial data with no end"
-	_, err := scanAll(t, input)
-	require.ErrorIs(t, err, ErrTruncatedPEMBlock)
-}
-
-func TestSplitPEM_NoEndNewline(t *testing.T) {
-	input := "-----BEGIN TEST-----\ndata\n-----END TEST-----"
-	blocks, err := scanAll(t, input)
-	require.NoError(t, err)
-	require.Len(t, blocks, 1)
-	require.Equal(t, input, blocks[0])
-}
-
-func TestSplitPEM_GarbageOnly(t *testing.T) {
-	_, err := scanAll(t, "this is not PEM data")
-	require.ErrorIs(t, err, ErrTruncatedPEMBlock)
-}
-
 func TestUnmarshalCertificateFromPEM(t *testing.T) {
 	goodCert := []byte(`
 # A good cert
@@ -120,7 +44,7 @@ bzBEr00kERQxxTzTsH8cpYEgRoipvmExvg8WP8NdAJEYJosB
 	assert.Equal(t, rest, invalidPem)
 	require.EqualError(t, err, "bytes did not contain a proper certificate banner")
 
-	// Fail due to invalid PEM format, because
+	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
 	cert, rest, err = UnmarshalCertificateFromPEM(rest)
 	assert.Nil(t, cert)
@@ -182,7 +106,7 @@ AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
 	assert.Equal(t, rest, invalidPem)
 	require.EqualError(t, err, "bytes did not contain a proper Ed25519/ECDSA private key banner")
 
-	// Fail due to invalid PEM format, because
+	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
 	k, rest, curve, err = UnmarshalSigningPrivateKeyFromPEM(rest)
 	assert.Nil(t, k)
@@ -244,7 +168,7 @@ AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 	assert.Equal(t, rest, invalidPem)
 	require.EqualError(t, err, "bytes did not contain a proper private key banner")
 
-	// Fail due to invalid PEM format, because
+	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
 	k, rest, curve, err = UnmarshalPrivateKeyFromPEM(rest)
 	assert.Nil(t, k)
@@ -297,7 +221,7 @@ AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 	require.EqualError(t, err, "bytes did not contain a proper public key banner")
 	assert.Equal(t, rest, invalidPem)
 
-	// Fail due to invalid PEM format, because
+	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
 	k, rest, curve, err = UnmarshalPublicKeyFromPEM(rest)
 	assert.Nil(t, k)
@@ -375,7 +299,7 @@ AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 	require.EqualError(t, err, "bytes did not contain a proper public key banner")
 	assert.Equal(t, rest, invalidPem)
 
-	// Fail due to invalid PEM format, because
+	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
 	k, rest, curve, err = UnmarshalPublicKeyFromPEM(rest)
 	assert.Nil(t, k)

cert/sign.go

@@ -9,8 +9,6 @@ import (
 	"fmt"
 	"net/netip"
 	"time"
-
-	"github.com/slackhq/nebula/cert/p256"
 )
 
 // TBSCertificate represents a certificate intended to be signed.
@@ -128,13 +126,6 @@ func (t *TBSCertificate) SignWith(signer Certificate, curve Curve, sp SignerLamb
 		return nil, err
 	}
 
-	if curve == Curve_P256 {
-		sig, err = p256.Normalize(sig)
-		if err != nil {
-			return nil, err
-		}
-	}
-
 	err = c.setSignature(sig)
 	if err != nil {
 		return nil, err

cert/sign_test.go

@@ -9,7 +9,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/slackhq/nebula/cert/p256"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -90,48 +89,3 @@ func TestCertificateV1_SignP256(t *testing.T) {
 	require.NoError(t, err)
 	assert.NotNil(t, uc)
 }
-
-func TestCertificate_SignP256_AlwaysNormalized(t *testing.T) {
-	before := time.Now().Add(time.Second * -60).Round(time.Second)
-	after := time.Now().Add(time.Second * 60).Round(time.Second)
-	pubKey := []byte("01234567890abcedfghij1234567890ab1234567890abcedfghij1234567890ab")
-
-	tbs := TBSCertificate{
-		Version: Version1,
-		Name:    "testing",
-		Networks: []netip.Prefix{
-			mustParsePrefixUnmapped("10.1.1.1/24"),
-			mustParsePrefixUnmapped("10.1.1.2/16"),
-		},
-		UnsafeNetworks: []netip.Prefix{
-			mustParsePrefixUnmapped("9.1.1.2/24"),
-			mustParsePrefixUnmapped("9.1.1.3/16"),
-		},
-		Groups:    []string{"test-group1", "test-group2", "test-group3"},
-		NotBefore: before,
-		NotAfter:  after,
-		PublicKey: pubKey,
-		IsCA:      true,
-		Curve:     Curve_P256,
-	}
-
-	priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	require.NoError(t, err)
-	pub := elliptic.Marshal(elliptic.P256(), priv.PublicKey.X, priv.PublicKey.Y)
-	rawPriv := priv.D.FillBytes(make([]byte, 32))
-
-	for i := 0; i < 1000; i++ {
-		if i&1 == 1 {
-			tbs.Version = Version1
-		} else {
-			tbs.Version = Version2
-		}
-		c, err := tbs.Sign(nil, Curve_P256, rawPriv)
-		require.NoError(t, err)
-		assert.NotNil(t, c)
-		assert.True(t, c.CheckSignature(pub))
-		normie, err := p256.IsNormalized(c.Signature())
-		require.NoError(t, err)
-		assert.True(t, normie)
-	}
-}

cert_test/cert.go

@@ -14,12 +14,6 @@ import (
 	"golang.org/x/crypto/ed25519"
 )
 
-// testCertNow is the reference "now" used to derive default before/after times
-// in NewTestCaCert and NewTestCert. Holding it fixed for the lifetime of the
-// test binary keeps CA and leaf defaults aligned at the same second, so a leaf
-// signed with default times can never expire after its CA on a rounding race.
-var testCertNow = time.Now().Round(time.Second)
-
 // NewTestCaCert will create a new ca certificate
 func NewTestCaCert(version cert.Version, curve cert.Curve, before, after time.Time, networks, unsafeNetworks []netip.Prefix, groups []string) (cert.Certificate, []byte, []byte, []byte) {
 	var err error
@@ -41,10 +35,10 @@ func NewTestCaCert(version cert.Version, curve cert.Curve, before, after time.Ti
 	}
 
 	if before.IsZero() {
-		before = testCertNow.Add(time.Second * -60)
+		before = time.Now().Add(time.Second * -60).Round(time.Second)
 	}
 	if after.IsZero() {
-		after = testCertNow.Add(time.Second * 60)
+		after = time.Now().Add(time.Second * 60).Round(time.Second)
 	}
 
 	t := &cert.TBSCertificate{
@@ -77,11 +71,11 @@ func NewTestCaCert(version cert.Version, curve cert.Curve, before, after time.Ti
 // Expiry times are defaulted if you do not pass them in
 func NewTestCert(v cert.Version, curve cert.Curve, ca cert.Certificate, key []byte, name string, before, after time.Time, networks, unsafeNetworks []netip.Prefix, groups []string) (cert.Certificate, []byte, []byte, []byte) {
 	if before.IsZero() {
-		before = testCertNow.Add(time.Second * -60)
+		before = time.Now().Add(time.Second * -60).Round(time.Second)
 	}
 
 	if after.IsZero() {
-		after = testCertNow.Add(time.Second * 60)
+		after = time.Now().Add(time.Second * 60).Round(time.Second)
 	}
 
 	var pub, priv []byte
@@ -120,33 +114,6 @@ func NewTestCert(v cert.Version, curve cert.Curve, ca cert.Certificate, key []by
 	return c, pub, cert.MarshalPrivateKeyToPEM(curve, priv), pem
 }
 
-func NewTestCertDifferentVersion(c cert.Certificate, v cert.Version, ca cert.Certificate, key []byte) (cert.Certificate, []byte) {
-	nc := &cert.TBSCertificate{
-		Version:        v,
-		Curve:          c.Curve(),
-		Name:           c.Name(),
-		Networks:       c.Networks(),
-		UnsafeNetworks: c.UnsafeNetworks(),
-		Groups:         c.Groups(),
-		NotBefore:      time.Unix(c.NotBefore().Unix(), 0),
-		NotAfter:       time.Unix(c.NotAfter().Unix(), 0),
-		PublicKey:      c.PublicKey(),
-		IsCA:           false,
-	}
-
-	c, err := nc.Sign(ca, ca.Curve(), key)
-	if err != nil {
-		panic(err)
-	}
-
-	pem, err := c.MarshalPEM()
-	if err != nil {
-		panic(err)
-	}
-
-	return c, pem
-}
-
 func X25519Keypair() ([]byte, []byte) {
 	privkey := make([]byte, 32)
 	if _, err := io.ReadFull(rand.Reader, privkey); err != nil {
@@ -169,55 +136,3 @@ func P256Keypair() ([]byte, []byte) {
 	pubkey := privkey.PublicKey()
 	return pubkey.Bytes(), privkey.Bytes()
 }
-
-// DummyCert is a minimal cert.Certificate implementation for testing error paths.
-type DummyCert struct {
-	Version_        cert.Version
-	Curve_          cert.Curve
-	Groups_         []string
-	IsCA_           bool
-	Issuer_         string
-	Name_           string
-	Networks_       []netip.Prefix
-	NotAfter_       time.Time
-	NotBefore_      time.Time
-	PublicKey_      []byte
-	Signature_      []byte
-	UnsafeNetworks_ []netip.Prefix
-}
-
-func (d *DummyCert) Version() cert.Version                         { return d.Version_ }
-func (d *DummyCert) Curve() cert.Curve                             { return d.Curve_ }
-func (d *DummyCert) Groups() []string                              { return d.Groups_ }
-func (d *DummyCert) IsCA() bool                                    { return d.IsCA_ }
-func (d *DummyCert) Issuer() string                                { return d.Issuer_ }
-func (d *DummyCert) Name() string                                  { return d.Name_ }
-func (d *DummyCert) Networks() []netip.Prefix                      { return d.Networks_ }
-func (d *DummyCert) NotAfter() time.Time                           { return d.NotAfter_ }
-func (d *DummyCert) NotBefore() time.Time                          { return d.NotBefore_ }
-func (d *DummyCert) PublicKey() []byte                             { return d.PublicKey_ }
-func (d *DummyCert) Signature() []byte                             { return d.Signature_ }
-func (d *DummyCert) UnsafeNetworks() []netip.Prefix                { return d.UnsafeNetworks_ }
-func (d *DummyCert) Fingerprint() (string, error)                  { return "", nil }
-func (d *DummyCert) CheckSignature(key []byte) bool                { return false }
-func (d *DummyCert) MarshalForHandshakes() ([]byte, error)         { return nil, nil }
-func (d *DummyCert) MarshalPEM() ([]byte, error)                   { return nil, nil }
-func (d *DummyCert) MarshalJSON() ([]byte, error)                  { return nil, nil }
-func (d *DummyCert) Marshal() ([]byte, error)                      { return nil, nil }
-func (d *DummyCert) String() string                                { return "dummy" }
-func (d *DummyCert) Copy() cert.Certificate                        { return d }
-func (d *DummyCert) VerifyPrivateKey(c cert.Curve, k []byte) error { return nil }
-func (d *DummyCert) Expired(time.Time) bool                        { return false }
-func (d *DummyCert) MarshalPublicKeyPEM() []byte                   { return nil }
-func (d *DummyCert) PublicKeyPEM() []byte                          { return nil }
-
-// NewTestCAPool creates a CAPool from the given CA certificates, panicking on error.
-func NewTestCAPool(cas ...cert.Certificate) *cert.CAPool {
-	pool := cert.NewCAPool()
-	for _, ca := range cas {
-		if err := pool.AddCA(ca); err != nil {
-			panic(err)
-		}
-	}
-	return pool
-}

cmd/nebula-cert/ca.go

@@ -97,19 +97,6 @@ func ca(args []string, out io.Writer, errOut io.Writer, pr PasswordReader) error
 		if err = mustFlagString("out-key", cf.outKeyPath); err != nil {
 			return err
 		}
-	} else {
-		// out-key is meaningless under PKCS#11 because the private key never
-		// leaves the HSM; reject it so we never silently accept or claim a
-		// stdout slot for it.
-		outKeySet := false
-		cf.set.Visit(func(f *flag.Flag) {
-			if f.Name == "out-key" {
-				outKeySet = true
-			}
-		})
-		if outKeySet {
-			return newHelpErrorf("cannot set -out-key with -pkcs11")
-		}
 	}
 	if err := mustFlagString("out-crt", cf.outCertPath); err != nil {
 		return err
@@ -184,37 +171,25 @@ func ca(args []string, out io.Writer, errOut io.Writer, pr PasswordReader) error
 		}
 	}
 
-	var claims ioClaims
-	if err := reserveOutputs(&claims,
-		"out-key", *cf.outKeyPath,
-		"out-crt", *cf.outCertPath,
-		"out-qr", *cf.outQRPath,
-	); err != nil {
-		return err
-	}
-
 	var passphrase []byte
 	if !isP11 && *cf.encryption {
-		passphrase = []byte(os.Getenv("NEBULA_CA_PASSPHRASE"))
+		for i := 0; i < 5; i++ {
+			out.Write([]byte("Enter passphrase: "))
+			passphrase, err = pr.ReadPassword()
+
+			if err == ErrNoTerminal {
+				return fmt.Errorf("out-key must be encrypted interactively")
+			} else if err != nil {
+				return fmt.Errorf("error reading passphrase: %s", err)
+			}
+
+			if len(passphrase) > 0 {
+				break
+			}
+		}
+
 		if len(passphrase) == 0 {
-			for i := 0; i < 5; i++ {
-				errOut.Write([]byte("Enter passphrase: "))
-				passphrase, err = pr.ReadPassword()
-
-				if err == ErrNoTerminal {
-					return fmt.Errorf("out-key must be encrypted interactively")
-				} else if err != nil {
-					return fmt.Errorf("error reading passphrase: %s", err)
-				}
-
-				if len(passphrase) > 0 {
-					break
-				}
-			}
-
-			if len(passphrase) == 0 {
-				return fmt.Errorf("no passphrase specified, remove -encrypt flag to write out-key in plaintext")
-			}
+			return fmt.Errorf("no passphrase specified, remove -encrypt flag to write out-key in plaintext")
 		}
 	}
 
@@ -283,16 +258,14 @@ func ca(args []string, out io.Writer, errOut io.Writer, pr PasswordReader) error
 		Curve:          curve,
 	}
 
-	if !isP11 && !isStdio(*cf.outKeyPath) {
+	if !isP11 {
 		if _, err := os.Stat(*cf.outKeyPath); err == nil {
 			return fmt.Errorf("refusing to overwrite existing CA key: %s", *cf.outKeyPath)
 		}
 	}
 
-	if !isStdio(*cf.outCertPath) {
-		if _, err := os.Stat(*cf.outCertPath); err == nil {
-			return fmt.Errorf("refusing to overwrite existing CA cert: %s", *cf.outCertPath)
-		}
+	if _, err := os.Stat(*cf.outCertPath); err == nil {
+		return fmt.Errorf("refusing to overwrite existing CA cert: %s", *cf.outCertPath)
 	}
 
 	var c cert.Certificate
@@ -318,7 +291,7 @@ func ca(args []string, out io.Writer, errOut io.Writer, pr PasswordReader) error
 			b = cert.MarshalSigningPrivateKeyToPEM(curve, rawPriv)
 		}
 
-		err = writeOutput(*cf.outKeyPath, b, 0600, out)
+		err = os.WriteFile(*cf.outKeyPath, b, 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-key: %s", err)
 		}
@@ -329,7 +302,7 @@ func ca(args []string, out io.Writer, errOut io.Writer, pr PasswordReader) error
 		return fmt.Errorf("error while marshalling certificate: %s", err)
 	}
 
-	err = writeOutput(*cf.outCertPath, b, 0600, out)
+	err = os.WriteFile(*cf.outCertPath, b, 0600)
 	if err != nil {
 		return fmt.Errorf("error while writing out-crt: %s", err)
 	}
@@ -340,7 +313,7 @@ func ca(args []string, out io.Writer, errOut io.Writer, pr PasswordReader) error
 			return fmt.Errorf("error while generating qr code: %s", err)
 		}
 
-		err = writeOutput(*cf.outQRPath, b, 0600, out)
+		err = os.WriteFile(*cf.outQRPath, b, 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-qr: %s", err)
 		}
@@ -356,7 +329,6 @@ func caSummary() string {
 func caHelp(out io.Writer) {
 	cf := newCaFlags()
 	out.Write([]byte("Usage of " + os.Args[0] + " " + caSummary() + "\n"))
-	out.Write([]byte(stdioHelpText))
 	cf.set.SetOutput(out)
 	cf.set.PrintDefaults()
 }

cmd/nebula-cert/ca_test.go

@@ -27,7 +27,6 @@ func Test_caHelp(t *testing.T) {
 	assert.Equal(
 		t,
 		"Usage of "+os.Args[0]+" ca <flags>: create a self signed certificate authority\n"+
-			"  Pass \"-\" to any path flag to read from stdin or write to stdout.\n"+
 			"  -argon-iterations uint\n"+
 			"    \tOptional: Argon2 iterations parameter used for encrypted private key passphrase (default 1)\n"+
 			"  -argon-memory uint\n"+
@@ -85,7 +84,7 @@ func Test_ca(t *testing.T) {
 		err:      nil,
 	}
 
-	pwPromptEB := "Enter passphrase: "
+	pwPromptOb := "Enter passphrase: "
 
 	// required args
 	assertHelpError(t, ca(
@@ -169,19 +168,8 @@ func Test_ca(t *testing.T) {
 	eb.Reset()
 	args = []string{"-version", "1", "-encrypt", "-name", "test", "-duration", "100m", "-groups", "1,2,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
 	require.NoError(t, ca(args, ob, eb, testpw))
-	assert.Empty(t, ob.String())
-	assert.Equal(t, pwPromptEB, eb.String())
-
-	// test encrypted key with passphrase environment variable
-	os.Remove(keyF.Name())
-	os.Remove(crtF.Name())
-	ob.Reset()
-	eb.Reset()
-	args = []string{"-version", "1", "-encrypt", "-name", "test", "-duration", "100m", "-groups", "1,2,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
-	os.Setenv("NEBULA_CA_PASSPHRASE", string(passphrase))
-	require.NoError(t, ca(args, ob, eb, testpw))
+	assert.Equal(t, pwPromptOb, ob.String())
 	assert.Empty(t, eb.String())
-	os.Setenv("NEBULA_CA_PASSPHRASE", "")
 
 	// read encrypted key file and verify default params
 	rb, _ = os.ReadFile(keyF.Name())
@@ -201,15 +189,15 @@ func Test_ca(t *testing.T) {
 	assert.Empty(t, b)
 	assert.Len(t, lKey, 64)
 
-	// test when reading password results in an error
+	// test when reading passsword results in an error
 	os.Remove(keyF.Name())
 	os.Remove(crtF.Name())
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-version", "1", "-encrypt", "-name", "test", "-duration", "100m", "-groups", "1,2,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
 	require.Error(t, ca(args, ob, eb, errpw))
-	assert.Empty(t, ob.String())
-	assert.Equal(t, pwPromptEB, eb.String())
+	assert.Equal(t, pwPromptOb, ob.String())
+	assert.Empty(t, eb.String())
 
 	// test when user fails to enter a password
 	os.Remove(keyF.Name())
@@ -218,8 +206,8 @@ func Test_ca(t *testing.T) {
 	eb.Reset()
 	args = []string{"-version", "1", "-encrypt", "-name", "test", "-duration", "100m", "-groups", "1,2,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
 	require.EqualError(t, ca(args, ob, eb, nopw), "no passphrase specified, remove -encrypt flag to write out-key in plaintext")
-	assert.Empty(t, ob.String())
-	assert.Equal(t, strings.Repeat(pwPromptEB, 5), eb.String()) // prompts 5 times before giving up
+	assert.Equal(t, strings.Repeat(pwPromptOb, 5), ob.String()) // prompts 5 times before giving up
+	assert.Empty(t, eb.String())
 
 	// create valid cert/key for overwrite tests
 	os.Remove(keyF.Name())
@@ -248,67 +236,3 @@ func Test_ca(t *testing.T) {
 	os.Remove(keyF.Name())
 
 }
-
-func Test_ca_stdio(t *testing.T) {
-	nopw := &StubPasswordReader{}
-
-	keyF, err := os.CreateTemp("", "ca.key")
-	require.NoError(t, err)
-	os.Remove(keyF.Name())
-	defer os.Remove(keyF.Name())
-
-	crtF, err := os.CreateTemp("", "ca.crt")
-	require.NoError(t, err)
-	os.Remove(crtF.Name())
-	defer os.Remove(crtF.Name())
-
-	// out-crt on stdout, out-key on disk
-	ob := &bytes.Buffer{}
-	eb := &bytes.Buffer{}
-	require.NoError(t, ca([]string{"-name", "test-ca", "-duration", "1h", "-out-crt", "-", "-out-key", keyF.Name()}, ob, eb, nopw))
-	assert.Empty(t, eb.String())
-	c, _, err := cert.UnmarshalCertificateFromPEM(ob.Bytes())
-	require.NoError(t, err)
-	assert.True(t, c.IsCA())
-	assert.Equal(t, "test-ca", c.Name())
-
-	// out-key on stdout, out-crt on disk
-	os.Remove(keyF.Name())
-	ob.Reset()
-	eb.Reset()
-	require.NoError(t, ca([]string{"-name", "test-ca", "-duration", "1h", "-out-crt", crtF.Name(), "-out-key", "-"}, ob, eb, nopw))
-	assert.Empty(t, eb.String())
-	_, _, curve, err := cert.UnmarshalSigningPrivateKeyFromPEM(ob.Bytes())
-	require.NoError(t, err)
-	assert.Equal(t, cert.Curve_CURVE25519, curve)
-
-	// dual stdout is rejected up front
-	os.Remove(crtF.Name())
-	ob.Reset()
-	eb.Reset()
-	require.EqualError(t,
-		ca([]string{"-name", "test-ca", "-duration", "1h", "-out-crt", "-", "-out-key", "-"}, ob, eb, nopw),
-		`-out-key and -out-crt both set to "-", only one output may write to stdout`)
-	assert.Empty(t, ob.String())
-
-	// an output conflict combined with -encrypt must error BEFORE prompting
-	// for a passphrase; pr would record any read attempt
-	tracker := &trackingPasswordReader{}
-	ob.Reset()
-	eb.Reset()
-	require.EqualError(t,
-		ca([]string{"-name", "test-ca", "-duration", "1h", "-encrypt", "-out-crt", "-", "-out-key", "-"}, ob, eb, tracker),
-		`-out-key and -out-crt both set to "-", only one output may write to stdout`)
-	assert.Empty(t, ob.String())
-	assert.Empty(t, eb.String())
-	assert.Zero(t, tracker.calls, "passphrase prompt should not have been called")
-}
-
-type trackingPasswordReader struct {
-	calls int
-}
-
-func (pr *trackingPasswordReader) ReadPassword() ([]byte, error) {
-	pr.calls++
-	return []byte(""), nil
-}

cmd/nebula-cert/keygen.go

@@ -42,8 +42,6 @@ func keygen(args []string, out io.Writer, errOut io.Writer) error {
 		if err = mustFlagString("out-key", cf.outKeyPath); err != nil {
 			return err
 		}
-	} else if *cf.outKeyPath != "" {
-		return newHelpErrorf("cannot set -out-key with -pkcs11")
 	}
 	if err = mustFlagString("out-pub", cf.outPubPath); err != nil {
 		return err
@@ -71,14 +69,6 @@ func keygen(args []string, out io.Writer, errOut io.Writer) error {
 		}
 	}
 
-	var claims ioClaims
-	if err := reserveOutputs(&claims,
-		"out-key", *cf.outKeyPath,
-		"out-pub", *cf.outPubPath,
-	); err != nil {
-		return err
-	}
-
 	if isP11 {
 		p11Client, err := pkclient.FromUrl(*cf.p11url)
 		if err != nil {
@@ -92,12 +82,12 @@ func keygen(args []string, out io.Writer, errOut io.Writer) error {
 			return fmt.Errorf("error while getting public key: %w", err)
 		}
 	} else {
-		err = writeOutput(*cf.outKeyPath, cert.MarshalPrivateKeyToPEM(curve, rawPriv), 0600, out)
+		err = os.WriteFile(*cf.outKeyPath, cert.MarshalPrivateKeyToPEM(curve, rawPriv), 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-key: %s", err)
 		}
 	}
-	err = writeOutput(*cf.outPubPath, cert.MarshalPublicKeyToPEM(curve, pub), 0600, out)
+	err = os.WriteFile(*cf.outPubPath, cert.MarshalPublicKeyToPEM(curve, pub), 0600)
 	if err != nil {
 		return fmt.Errorf("error while writing out-pub: %s", err)
 	}
@@ -112,7 +102,6 @@ func keygenSummary() string {
 func keygenHelp(out io.Writer) {
 	cf := newKeygenFlags()
 	_, _ = out.Write([]byte("Usage of " + os.Args[0] + " " + keygenSummary() + "\n"))
-	_, _ = out.Write([]byte(stdioHelpText))
 	cf.set.SetOutput(out)
 	cf.set.PrintDefaults()
 }

cmd/nebula-cert/keygen_test.go

@@ -20,7 +20,6 @@ func Test_keygenHelp(t *testing.T) {
 	assert.Equal(
 		t,
 		"Usage of "+os.Args[0]+" keygen <flags>: create a public/private key pair. the public key can be passed to `nebula-cert sign`\n"+
-			"  Pass \"-\" to any path flag to read from stdin or write to stdout.\n"+
 			"  -curve string\n"+
 			"    \tECDH Curve (25519, P256) (default \"25519\")\n"+
 			"  -out-key string\n"+
@@ -94,43 +93,3 @@ func Test_keygen(t *testing.T) {
 	require.NoError(t, err)
 	assert.Len(t, lPub, 32)
 }
-
-func Test_keygen_stdio(t *testing.T) {
-	keyF, err := os.CreateTemp("", "test.key")
-	require.NoError(t, err)
-	os.Remove(keyF.Name())
-	defer os.Remove(keyF.Name())
-
-	pubF, err := os.CreateTemp("", "test.pub")
-	require.NoError(t, err)
-	os.Remove(pubF.Name())
-	defer os.Remove(pubF.Name())
-
-	// out-pub on stdout, out-key on disk
-	ob := &bytes.Buffer{}
-	eb := &bytes.Buffer{}
-	require.NoError(t, keygen([]string{"-out-pub", "-", "-out-key", keyF.Name()}, ob, eb))
-	assert.Empty(t, eb.String())
-	lPub, _, curve, err := cert.UnmarshalPublicKeyFromPEM(ob.Bytes())
-	require.NoError(t, err)
-	assert.Equal(t, cert.Curve_CURVE25519, curve)
-	assert.Len(t, lPub, 32)
-
-	// out-key on stdout, out-pub on disk
-	os.Remove(keyF.Name())
-	ob.Reset()
-	eb.Reset()
-	require.NoError(t, keygen([]string{"-out-pub", pubF.Name(), "-out-key", "-"}, ob, eb))
-	assert.Empty(t, eb.String())
-	lKey, _, curve, err := cert.UnmarshalPrivateKeyFromPEM(ob.Bytes())
-	require.NoError(t, err)
-	assert.Equal(t, cert.Curve_CURVE25519, curve)
-	assert.Len(t, lKey, 32)
-
-	// both on stdout is a conflict caught up front
-	ob.Reset()
-	eb.Reset()
-	require.EqualError(t, keygen([]string{"-out-pub", "-", "-out-key", "-"}, ob, eb),
-		`-out-key and -out-pub both set to "-", only one output may write to stdout`)
-	assert.Empty(t, ob.String())
-}

cmd/nebula-cert/main.go

@@ -5,28 +5,10 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"runtime/debug"
-	"strings"
 )
 
-// A version string that can be set with
-//
-//	-ldflags "-X main.Build=SOMEVERSION"
-//
-// at compile-time.
 var Build string
 
-func init() {
-	if Build == "" {
-		info, ok := debug.ReadBuildInfo()
-		if !ok {
-			return
-		}
-
-		Build = strings.TrimPrefix(info.Main.Version, "v")
-	}
-}
-
 type helpError struct {
 	s string
 }

cmd/nebula-cert/passwords.go

@@ -22,9 +22,7 @@ func (pr StdinPasswordReader) ReadPassword() ([]byte, error) {
 	}
 
 	password, err := term.ReadPassword(int(os.Stdin.Fd()))
-	// Terminal echo is off while reading, so the user's Enter key does not
-	// produce a visible newline. Emit one on stderr to match the prompt.
-	fmt.Fprintln(os.Stderr)
+	fmt.Println()
 
 	return password, err
 }

cmd/nebula-cert/print.go

@@ -40,23 +40,11 @@ func printCert(args []string, out io.Writer, errOut io.Writer) error {
 		return err
 	}
 
-	var claims ioClaims
-	if err := reserveInputs(&claims, "path", *pf.path); err != nil {
-		return err
-	}
-	if err := reserveOutputs(&claims, "out-qr", *pf.outQRPath); err != nil {
-		return err
-	}
-
-	rawCert, err := readInput("path", *pf.path, &claims)
+	rawCert, err := os.ReadFile(*pf.path)
 	if err != nil {
 		return fmt.Errorf("unable to read cert; %s", err)
 	}
 
-	// When the QR is going to stdout, suppress the human-readable text/json
-	// output so the binary stream is not contaminated.
-	qrToStdout := isStdio(*pf.outQRPath)
-
 	var c cert.Certificate
 	var qrBytes []byte
 	part := 0
@@ -69,13 +57,11 @@ func printCert(args []string, out io.Writer, errOut io.Writer) error {
 			return fmt.Errorf("error while unmarshaling cert: %s", err)
 		}
 
-		if !qrToStdout {
-			if *pf.json {
-				jsonCerts = append(jsonCerts, c)
-			} else {
-				_, _ = out.Write([]byte(c.String()))
-				_, _ = out.Write([]byte("\n"))
-			}
+		if *pf.json {
+			jsonCerts = append(jsonCerts, c)
+		} else {
+			_, _ = out.Write([]byte(c.String()))
+			_, _ = out.Write([]byte("\n"))
 		}
 
 		if *pf.outQRPath != "" {
@@ -93,7 +79,7 @@ func printCert(args []string, out io.Writer, errOut io.Writer) error {
 		part++
 	}
 
-	if *pf.json && !qrToStdout {
+	if *pf.json {
 		b, _ := json.Marshal(jsonCerts)
 		_, _ = out.Write(b)
 		_, _ = out.Write([]byte("\n"))
@@ -105,7 +91,7 @@ func printCert(args []string, out io.Writer, errOut io.Writer) error {
 			return fmt.Errorf("error while generating qr code: %s", err)
 		}
 
-		err = writeOutput(*pf.outQRPath, b, 0600, out)
+		err = os.WriteFile(*pf.outQRPath, b, 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-qr: %s", err)
 		}
@@ -121,7 +107,6 @@ func printSummary() string {
 func printHelp(out io.Writer) {
 	pf := newPrintFlags()
 	out.Write([]byte("Usage of " + os.Args[0] + " " + printSummary() + "\n"))
-	out.Write([]byte(stdioHelpText))
 	pf.set.SetOutput(out)
 	pf.set.PrintDefaults()
 }

cmd/nebula-cert/print_test.go

@@ -25,7 +25,6 @@ func Test_printHelp(t *testing.T) {
 	assert.Equal(
 		t,
 		"Usage of "+os.Args[0]+" print <flags>: prints details about a certificate\n"+
-			"  Pass \"-\" to any path flag to read from stdin or write to stdout.\n"+
 			"  -json\n"+
 			"    \tOptional: outputs certificates in json format\n"+
 			"  -out-qr string\n"+
@@ -179,44 +178,6 @@ func Test_printCert(t *testing.T) {
 		ob.String(),
 	)
 	assert.Empty(t, eb.String())
-
-	// read cert from stdin
-	ob.Reset()
-	eb.Reset()
-	withStdin(t, bytes.NewReader(p))
-	err = printCert([]string{"-json", "-path", "-"}, ob, eb)
-	require.NoError(t, err)
-	assert.Equal(
-		t,
-		`[{"details":{"curve":"CURVE25519","groups":["hi"],"isCa":false,"issuer":"`+c.Issuer()+`","name":"test","networks":["10.0.0.123/8"],"notAfter":"0001-01-01T00:00:00Z","notBefore":"0001-01-01T00:00:00Z","publicKey":"`+pk+`","unsafeNetworks":[]},"fingerprint":"`+fp+`","signature":"`+sig+`","version":1}]
-`,
-		ob.String(),
-	)
-	assert.Empty(t, eb.String())
-
-	// -out-qr - sends only the PNG to stdout, suppressing the cert dump
-	ob.Reset()
-	eb.Reset()
-	withStdin(t, bytes.NewReader(p))
-	err = printCert([]string{"-path", "-", "-out-qr", "-"}, ob, eb)
-	require.NoError(t, err)
-	assert.Empty(t, eb.String())
-	stdout := ob.Bytes()
-	require.NotEmpty(t, stdout)
-	// PNG magic, no PEM/JSON noise prepended
-	assert.Equal(t, []byte{0x89, 'P', 'N', 'G', 0x0d, 0x0a, 0x1a, 0x0a}, stdout[:8])
-	assert.NotContains(t, string(stdout), "NebulaCertificate")
-	assert.NotContains(t, string(stdout), `"details"`)
-
-	// json + out-qr - still suppresses json
-	ob.Reset()
-	eb.Reset()
-	withStdin(t, bytes.NewReader(p))
-	err = printCert([]string{"-json", "-path", "-", "-out-qr", "-"}, ob, eb)
-	require.NoError(t, err)
-	assert.Empty(t, eb.String())
-	assert.Equal(t, []byte{0x89, 'P', 'N', 'G'}, ob.Bytes()[:4])
-	assert.NotContains(t, ob.String(), `"details"`)
 }
 
 // NewTestCaCert will generate a CA cert

cmd/nebula-cert/sign.go

@@ -43,7 +43,7 @@ type signFlags struct {
 func newSignFlags() *signFlags {
 	sf := signFlags{set: flag.NewFlagSet("sign", flag.ContinueOnError)}
 	sf.set.Usage = func() {}
-	sf.version = sf.set.Uint("version", 0, "Optional: version of the certificate format to use. The default is to match the version of the signing CA")
+	sf.version = sf.set.Uint("version", 0, "Optional: version of the certificate format to use, the default is to create both v1 and v2 certificates.")
 	sf.caKeyPath = sf.set.String("ca-key", "ca.key", "Optional: path to the signing CA key")
 	sf.caCertPath = sf.set.String("ca-crt", "ca.crt", "Optional: path to the signing CA cert")
 	sf.name = sf.set.String("name", "", "Required: name of the cert, usually a hostname")
@@ -85,9 +85,6 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 	if !isP11 && *sf.inPubPath != "" && *sf.outKeyPath != "" {
 		return newHelpErrorf("cannot set both -in-pub and -out-key")
 	}
-	if isP11 && *sf.outKeyPath != "" {
-		return newHelpErrorf("cannot set -out-key with -pkcs11")
-	}
 
 	var v4Networks []netip.Prefix
 	var v6Networks []netip.Prefix
@@ -105,35 +102,13 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 		return newHelpErrorf("-version must be either %v or %v", cert.Version1, cert.Version2)
 	}
 
-	if *sf.outKeyPath == "" {
-		*sf.outKeyPath = *sf.name + ".key"
-	}
-	if *sf.outCertPath == "" {
-		*sf.outCertPath = *sf.name + ".crt"
-	}
-
-	var claims ioClaims
-	if err := reserveInputs(&claims,
-		"ca-key", *sf.caKeyPath,
-		"ca-crt", *sf.caCertPath,
-		"in-pub", *sf.inPubPath,
-	); err != nil {
-		return err
-	}
-	if err := reserveOutputs(&claims,
-		"out-key", *sf.outKeyPath,
-		"out-crt", *sf.outCertPath,
-		"out-qr", *sf.outQRPath,
-	); err != nil {
-		return err
-	}
-
 	var curve cert.Curve
 	var caKey []byte
 
 	if !isP11 {
 		var rawCAKey []byte
-		rawCAKey, err = readInput("ca-key", *sf.caKeyPath, &claims)
+		rawCAKey, err := os.ReadFile(*sf.caKeyPath)
+
 		if err != nil {
 			return fmt.Errorf("error while reading ca-key: %s", err)
 		}
@@ -141,28 +116,26 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 		// naively attempt to decode the private key as though it is not encrypted
 		caKey, _, curve, err = cert.UnmarshalSigningPrivateKeyFromPEM(rawCAKey)
 		if errors.Is(err, cert.ErrPrivateKeyEncrypted) {
+			// ask for a passphrase until we get one
 			var passphrase []byte
-			passphrase = []byte(os.Getenv("NEBULA_CA_PASSPHRASE"))
-			if len(passphrase) == 0 {
-				// ask for a passphrase until we get one
-				for i := 0; i < 5; i++ {
-					errOut.Write([]byte("Enter passphrase: "))
-					passphrase, err = pr.ReadPassword()
+			for i := 0; i < 5; i++ {
+				out.Write([]byte("Enter passphrase: "))
+				passphrase, err = pr.ReadPassword()
 
-					if errors.Is(err, ErrNoTerminal) {
-						return fmt.Errorf("ca-key is encrypted and must be decrypted interactively")
-					} else if err != nil {
-						return fmt.Errorf("error reading password: %s", err)
-					}
-
-					if len(passphrase) > 0 {
-						break
-					}
+				if errors.Is(err, ErrNoTerminal) {
+					return fmt.Errorf("ca-key is encrypted and must be decrypted interactively")
+				} else if err != nil {
+					return fmt.Errorf("error reading password: %s", err)
 				}
-				if len(passphrase) == 0 {
-					return fmt.Errorf("cannot open encrypted ca-key without passphrase")
+
+				if len(passphrase) > 0 {
+					break
 				}
 			}
+			if len(passphrase) == 0 {
+				return fmt.Errorf("cannot open encrypted ca-key without passphrase")
+			}
+
 			curve, caKey, _, err = cert.DecryptAndUnmarshalSigningPrivateKey(passphrase, rawCAKey)
 			if err != nil {
 				return fmt.Errorf("error while parsing encrypted ca-key: %s", err)
@@ -172,7 +145,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 		}
 	}
 
-	rawCACert, err := readInput("ca-crt", *sf.caCertPath, &claims)
+	rawCACert, err := os.ReadFile(*sf.caCertPath)
 	if err != nil {
 		return fmt.Errorf("error while reading ca-crt: %s", err)
 	}
@@ -192,10 +165,6 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 		return fmt.Errorf("ca certificate is expired")
 	}
 
-	if version == 0 {
-		version = caCert.Version()
-	}
-
 	// if no duration is given, expire one second before the root expires
 	if *sf.duration <= 0 {
 		*sf.duration = time.Until(caCert.NotAfter()) - time.Second*1
@@ -270,7 +239,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 
 	if *sf.inPubPath != "" {
 		var pubCurve cert.Curve
-		rawPub, err := readInput("in-pub", *sf.inPubPath, &claims)
+		rawPub, err := os.ReadFile(*sf.inPubPath)
 		if err != nil {
 			return fmt.Errorf("error while reading in-pub: %s", err)
 		}
@@ -291,10 +260,16 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 		pub, rawPriv = newKeypair(curve)
 	}
 
-	if !isStdio(*sf.outCertPath) {
-		if _, err := os.Stat(*sf.outCertPath); err == nil {
-			return fmt.Errorf("refusing to overwrite existing cert: %s", *sf.outCertPath)
-		}
+	if *sf.outKeyPath == "" {
+		*sf.outKeyPath = *sf.name + ".key"
+	}
+
+	if *sf.outCertPath == "" {
+		*sf.outCertPath = *sf.name + ".crt"
+	}
+
+	if _, err := os.Stat(*sf.outCertPath); err == nil {
+		return fmt.Errorf("refusing to overwrite existing cert: %s", *sf.outCertPath)
 	}
 
 	var crts []cert.Certificate
@@ -302,19 +277,21 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 	notBefore := time.Now()
 	notAfter := notBefore.Add(*sf.duration)
 
-	switch version {
-	case cert.Version1:
-		// Make sure we have only one ipv4 address
+	if version == 0 || version == cert.Version1 {
+		// Make sure we at least have an ip
 		if len(v4Networks) != 1 {
 			return newHelpErrorf("invalid -networks definition: v1 certificates can only have a single ipv4 address")
 		}
 
-		if len(v6Networks) > 0 {
-			return newHelpErrorf("invalid -networks definition: v1 certificates can only contain ipv4 addresses")
-		}
+		if version == cert.Version1 {
+			// If we are asked to mint a v1 certificate only then we cant just ignore any v6 addresses
+			if len(v6Networks) > 0 {
+				return newHelpErrorf("invalid -networks definition: v1 certificates can only be ipv4")
+			}
 
-		if len(v6UnsafeNetworks) > 0 {
-			return newHelpErrorf("invalid -unsafe-networks definition: v1 certificates can only contain ipv4 addresses")
+			if len(v6UnsafeNetworks) > 0 {
+				return newHelpErrorf("invalid -unsafe-networks definition: v1 certificates can only be ipv4")
+			}
 		}
 
 		t := &cert.TBSCertificate{
@@ -344,8 +321,9 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 		}
 
 		crts = append(crts, nc)
+	}
 
-	case cert.Version2:
+	if version == 0 || version == cert.Version2 {
 		t := &cert.TBSCertificate{
 			Version:        cert.Version2,
 			Name:           *sf.name,
@@ -373,19 +351,14 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 		}
 
 		crts = append(crts, nc)
-	default:
-		// this should be unreachable
-		return fmt.Errorf("invalid version: %d", version)
 	}
 
 	if !isP11 && *sf.inPubPath == "" {
-		if !isStdio(*sf.outKeyPath) {
-			if _, err := os.Stat(*sf.outKeyPath); err == nil {
-				return fmt.Errorf("refusing to overwrite existing key: %s", *sf.outKeyPath)
-			}
+		if _, err := os.Stat(*sf.outKeyPath); err == nil {
+			return fmt.Errorf("refusing to overwrite existing key: %s", *sf.outKeyPath)
 		}
 
-		err = writeOutput(*sf.outKeyPath, cert.MarshalPrivateKeyToPEM(curve, rawPriv), 0600, out)
+		err = os.WriteFile(*sf.outKeyPath, cert.MarshalPrivateKeyToPEM(curve, rawPriv), 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-key: %s", err)
 		}
@@ -400,7 +373,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 		b = append(b, sb...)
 	}
 
-	err = writeOutput(*sf.outCertPath, b, 0600, out)
+	err = os.WriteFile(*sf.outCertPath, b, 0600)
 	if err != nil {
 		return fmt.Errorf("error while writing out-crt: %s", err)
 	}
@@ -411,7 +384,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader)
 			return fmt.Errorf("error while generating qr code: %s", err)
 		}
 
-		err = writeOutput(*sf.outQRPath, b, 0600, out)
+		err = os.WriteFile(*sf.outQRPath, b, 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-qr: %s", err)
 		}
@@ -461,7 +434,6 @@ func signSummary() string {
 func signHelp(out io.Writer) {
 	sf := newSignFlags()
 	out.Write([]byte("Usage of " + os.Args[0] + " " + signSummary() + "\n"))
-	out.Write([]byte(stdioHelpText))
 	sf.set.SetOutput(out)
 	sf.set.PrintDefaults()
 }

cmd/nebula-cert/sign_test.go

@@ -27,7 +27,6 @@ func Test_signHelp(t *testing.T) {
 	assert.Equal(
 		t,
 		"Usage of "+os.Args[0]+" sign <flags>: create and sign a certificate\n"+
-			"  Pass \"-\" to any path flag to read from stdin or write to stdout.\n"+
 			"  -ca-crt string\n"+
 			"    \tOptional: path to the signing CA cert (default \"ca.crt\")\n"+
 			"  -ca-key string\n"+
@@ -56,7 +55,7 @@ func Test_signHelp(t *testing.T) {
 			"  -unsafe-networks string\n"+
 			"    \tOptional: comma separated list of ip address and network in CIDR notation. Unsafe networks this cert can route for\n"+
 			"  -version uint\n"+
-			"    \tOptional: version of the certificate format to use. The default is to match the version of the signing CA\n",
+			"    \tOptional: version of the certificate format to use, the default is to create both v1 and v2 certificates.\n",
 		ob.String(),
 	)
 }
@@ -205,7 +204,7 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m", "-subnets", "100::100/100"}
-	assertHelpError(t, signCert(args, ob, eb, nopw), "invalid -unsafe-networks definition: v1 certificates can only contain ipv4 addresses")
+	assertHelpError(t, signCert(args, ob, eb, nopw), "invalid -unsafe-networks definition: v1 certificates can only be ipv4")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -377,20 +376,8 @@ func Test_signCert(t *testing.T) {
 	// test with the proper password
 	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", crtF.Name(), "-out-key", keyF.Name(), "-duration", "100m", "-subnets", "10.1.1.1/32, ,   10.2.2.2/32   ,   ,  ,, 10.5.5.5/32", "-groups", "1,,   2    ,        ,,,3,4,5"}
 	require.NoError(t, signCert(args, ob, eb, testpw))
-	assert.Empty(t, ob.String())
-	assert.Equal(t, "Enter passphrase: ", eb.String())
-
-	// test with the proper password in the environment
-	os.Remove(crtF.Name())
-	os.Remove(keyF.Name())
-	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", crtF.Name(), "-out-key", keyF.Name(), "-duration", "100m", "-subnets", "10.1.1.1/32, ,   10.2.2.2/32   ,   ,  ,, 10.5.5.5/32", "-groups", "1,,   2    ,        ,,,3,4,5"}
-	os.Setenv("NEBULA_CA_PASSPHRASE", string(passphrase))
-	ob.Reset()
-	eb.Reset()
-	require.NoError(t, signCert(args, ob, eb, testpw))
-	assert.Empty(t, ob.String())
+	assert.Equal(t, "Enter passphrase: ", ob.String())
 	assert.Empty(t, eb.String())
-	os.Setenv("NEBULA_CA_PASSPHRASE", "")
 
 	// test with the wrong password
 	ob.Reset()
@@ -399,19 +386,8 @@ func Test_signCert(t *testing.T) {
 	testpw.password = []byte("invalid password")
 	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", crtF.Name(), "-out-key", keyF.Name(), "-duration", "100m", "-subnets", "10.1.1.1/32, ,   10.2.2.2/32   ,   ,  ,, 10.5.5.5/32", "-groups", "1,,   2    ,        ,,,3,4,5"}
 	require.Error(t, signCert(args, ob, eb, testpw))
-	assert.Empty(t, ob.String())
-	assert.Equal(t, "Enter passphrase: ", eb.String())
-
-	// test with the wrong password in environment
-	ob.Reset()
-	eb.Reset()
-
-	os.Setenv("NEBULA_CA_PASSPHRASE", "invalid password")
-	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", crtF.Name(), "-out-key", keyF.Name(), "-duration", "100m", "-subnets", "10.1.1.1/32, ,   10.2.2.2/32   ,   ,  ,, 10.5.5.5/32", "-groups", "1,,   2    ,        ,,,3,4,5"}
-	require.EqualError(t, signCert(args, ob, eb, nopw), "error while parsing encrypted ca-key: invalid passphrase or corrupt private key")
-	assert.Empty(t, ob.String())
+	assert.Equal(t, "Enter passphrase: ", ob.String())
 	assert.Empty(t, eb.String())
-	os.Setenv("NEBULA_CA_PASSPHRASE", "")
 
 	// test with the user not entering a password
 	ob.Reset()
@@ -420,8 +396,8 @@ func Test_signCert(t *testing.T) {
 	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", crtF.Name(), "-out-key", keyF.Name(), "-duration", "100m", "-subnets", "10.1.1.1/32, ,   10.2.2.2/32   ,   ,  ,, 10.5.5.5/32", "-groups", "1,,   2    ,        ,,,3,4,5"}
 	require.Error(t, signCert(args, ob, eb, nopw))
 	// normally the user hitting enter on the prompt would add newlines between these
-	assert.Empty(t, ob.String())
-	assert.Equal(t, "Enter passphrase: Enter passphrase: Enter passphrase: Enter passphrase: Enter passphrase: ", eb.String())
+	assert.Equal(t, "Enter passphrase: Enter passphrase: Enter passphrase: Enter passphrase: Enter passphrase: ", ob.String())
+	assert.Empty(t, eb.String())
 
 	// test an error condition
 	ob.Reset()
@@ -429,106 +405,6 @@ func Test_signCert(t *testing.T) {
 
 	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", crtF.Name(), "-out-key", keyF.Name(), "-duration", "100m", "-subnets", "10.1.1.1/32, ,   10.2.2.2/32   ,   ,  ,, 10.5.5.5/32", "-groups", "1,,   2    ,        ,,,3,4,5"}
 	require.Error(t, signCert(args, ob, eb, errpw))
-	assert.Empty(t, ob.String())
-	assert.Equal(t, "Enter passphrase: ", eb.String())
-}
-
-func Test_signCert_stdio(t *testing.T) {
-	nopw := &StubPasswordReader{
-		password: []byte(""),
-		err:      nil,
-	}
-
-	caPub, caPriv, _ := ed25519.GenerateKey(rand.Reader)
-	rawCAKey := cert.MarshalSigningPrivateKeyToPEM(cert.Curve_CURVE25519, caPriv)
-
-	ca, _ := NewTestCaCert("ca", caPub, caPriv, time.Now(), time.Now().Add(time.Minute*200), nil, nil, nil)
-	rawCACrt, _ := ca.MarshalPEM()
-
-	caCrtF, err := os.CreateTemp("", "sign-cert.crt")
-	require.NoError(t, err)
-	defer os.Remove(caCrtF.Name())
-	caCrtF.Write(rawCACrt)
-
-	caKeyF, err := os.CreateTemp("", "sign-cert.key")
-	require.NoError(t, err)
-	defer os.Remove(caKeyF.Name())
-	caKeyF.Write(rawCAKey)
-
-	keyF, err := os.CreateTemp("", "sign.key")
-	require.NoError(t, err)
-	os.Remove(keyF.Name())
-	defer os.Remove(keyF.Name())
-
-	// ca-key on stdin, cert to stdout
-	withStdin(t, bytes.NewReader(rawCAKey))
-	ob := &bytes.Buffer{}
-	eb := &bytes.Buffer{}
-	args := []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", "-", "-name", "stdin-test", "-ip", "1.1.1.1/24", "-out-crt", "-", "-out-key", keyF.Name(), "-duration", "100m"}
-	require.NoError(t, signCert(args, ob, eb, nopw))
-	assert.Empty(t, eb.String())
-
-	lCrt, _, err := cert.UnmarshalCertificateFromPEM(ob.Bytes())
-	require.NoError(t, err)
-	assert.Equal(t, "stdin-test", lCrt.Name())
-	assert.True(t, lCrt.CheckSignature(caPub))
-
-	// two flags reading from stdin should error before any read attempt;
-	// otherwise an interactive shell would hang on io.ReadAll
-	stdinIn := bytes.NewReader(rawCAKey)
-	withStdin(t, stdinIn)
-	ob.Reset()
-	eb.Reset()
-	args = []string{"-version", "1", "-ca-crt", "-", "-ca-key", "-", "-name", "stdin-test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m"}
-	require.EqualError(t, signCert(args, ob, eb, nopw),
-		`-ca-key and -ca-crt both set to "-", only one input may read from stdin`)
-	assert.Equal(t, len(rawCAKey), stdinIn.Len(), "stdin should be untouched when conflict is caught up front")
-
-	// two flags writing to stdout should error before any output is written
-	// AND before stdin is consumed
-	stdinR := bytes.NewReader(rawCAKey)
-	withStdin(t, stdinR)
-	ob.Reset()
-	eb.Reset()
-	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", "-", "-name", "stdin-test", "-ip", "1.1.1.1/24", "-out-crt", "-", "-out-key", "-", "-duration", "100m"}
-	require.EqualError(t, signCert(args, ob, eb, nopw),
-		`-out-key and -out-crt both set to "-", only one output may write to stdout`)
-	assert.Empty(t, ob.String())
-	// stdin should be untouched because the conflict was caught up front
-	assert.Equal(t, len(rawCAKey), stdinR.Len())
-
-	// out-key on stdout, cert on disk
-	keyF2, err := os.CreateTemp("", "sign.key")
-	require.NoError(t, err)
-	os.Remove(keyF2.Name())
-	defer os.Remove(keyF2.Name())
-	crtF, err := os.CreateTemp("", "sign.crt")
-	require.NoError(t, err)
-	os.Remove(crtF.Name())
-	defer os.Remove(crtF.Name())
-
-	ob.Reset()
-	eb.Reset()
-	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "stdin-test", "-ip", "1.1.1.1/24", "-out-crt", crtF.Name(), "-out-key", "-", "-duration", "100m"}
-	require.NoError(t, signCert(args, ob, eb, nopw))
-	assert.Empty(t, eb.String())
-	_, _, curve, err := cert.UnmarshalPrivateKeyFromPEM(ob.Bytes())
-	require.NoError(t, err)
-	assert.Equal(t, cert.Curve_CURVE25519, curve)
-
-	// in-pub on stdin (caller already has a keypair, only the cert is generated)
-	inPub, _ := x25519Keypair()
-	rawInPub := cert.MarshalPublicKeyToPEM(cert.Curve_CURVE25519, inPub)
-
-	withStdin(t, bytes.NewReader(rawInPub))
-	os.Remove(crtF.Name())
-	ob.Reset()
-	eb.Reset()
-	args = []string{"-version", "1", "-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "in-pub-test", "-ip", "1.1.1.1/24", "-in-pub", "-", "-out-crt", "-", "-duration", "100m"}
-	require.NoError(t, signCert(args, ob, eb, nopw))
-	assert.Empty(t, eb.String())
-	stdinCrt, _, err := cert.UnmarshalCertificateFromPEM(ob.Bytes())
-	require.NoError(t, err)
-	assert.Equal(t, "in-pub-test", stdinCrt.Name())
-	assert.Equal(t, inPub, stdinCrt.PublicKey())
+	assert.Equal(t, "Enter passphrase: ", ob.String())
+	assert.Empty(t, eb.String())
 }

cmd/nebula-cert/stdio.go

@@ -1,117 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"io"
-	"os"
-)
-
-// stdioPath is the special path value that selects stdin (for inputs) or
-// stdout (for outputs) instead of a file on disk.
-const stdioPath = "-"
-
-// stdioHelpText is rendered just under the Usage line of each subcommand
-// help so the - convention is documented once instead of on every flag.
-const stdioHelpText = "  Pass \"-\" to any path flag to read from stdin or write to stdout.\n"
-
-// stdinReader is the source used when an input flag is set to "-".
-// It is a package level var so tests can swap in a deterministic reader.
-// Tests that mutate stdinReader cannot run with t.Parallel().
-var stdinReader io.Reader = os.Stdin
-
-// ioClaims tracks which flags have claimed stdin and stdout during a single
-// command invocation so we can refuse a second flag asking for the same
-// stream.
-type ioClaims struct {
-	in  string
-	out string
-}
-
-func (c *ioClaims) claimIn(flagName string) error {
-	if c.in != "" && c.in != flagName {
-		return fmt.Errorf("-%s and -%s both set to %q, only one input may read from stdin", c.in, flagName, stdioPath)
-	}
-	c.in = flagName
-	return nil
-}
-
-func (c *ioClaims) claimOut(flagName string) error {
-	if c.out != "" && c.out != flagName {
-		return fmt.Errorf("-%s and -%s both set to %q, only one output may write to stdout", c.out, flagName, stdioPath)
-	}
-	c.out = flagName
-	return nil
-}
-
-// reserveInputs walks alternating (flagName, path) pairs and claims stdin
-// for any path equal to stdioPath. It must be called before any input is
-// read so a conflict can be reported immediately instead of blocking on
-// io.ReadAll while waiting for input that will never arrive.
-func reserveInputs(claims *ioClaims, pairs ...string) error {
-	return reserveStdio(claims, "reserveInputs", (*ioClaims).claimIn, pairs)
-}
-
-// reserveOutputs walks alternating (flagName, path) pairs and claims stdout
-// for any path equal to stdioPath. It must be called before any output is
-// written so a conflict cannot leave one stream half written before the
-// second flag fails.
-func reserveOutputs(claims *ioClaims, pairs ...string) error {
-	return reserveStdio(claims, "reserveOutputs", (*ioClaims).claimOut, pairs)
-}
-
-func reserveStdio(claims *ioClaims, who string, claim func(*ioClaims, string) error, pairs []string) error {
-	if len(pairs)%2 != 0 {
-		panic(who + " requires alternating name, path pairs")
-	}
-	for i := 0; i < len(pairs); i += 2 {
-		name, path := pairs[i], pairs[i+1]
-		if path != stdioPath {
-			continue
-		}
-		if err := claim(claims, name); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// readInput returns the bytes referenced by path, reading from stdin when
-// path is stdioPath.
-func readInput(flagName, path string, claims *ioClaims) ([]byte, error) {
-	if path == stdioPath {
-		if err := claims.claimIn(flagName); err != nil {
-			return nil, err
-		}
-		return io.ReadAll(stdinReader)
-	}
-	return os.ReadFile(path)
-}
-
-// openInput returns a reader for path. When path is stdioPath the returned
-// reader wraps stdin and Close is a no-op.
-func openInput(flagName, path string, claims *ioClaims) (io.ReadCloser, error) {
-	if path == stdioPath {
-		if err := claims.claimIn(flagName); err != nil {
-			return nil, err
-		}
-		return io.NopCloser(stdinReader), nil
-	}
-	return os.Open(path)
-}
-
-// writeOutput writes data to path, or to stdout when path is stdioPath. perm
-// is only used for file output. The caller must have already claimed stdout
-// via reserveOutputs before invoking with stdioPath.
-func writeOutput(path string, data []byte, perm os.FileMode, stdout io.Writer) error {
-	if path == stdioPath {
-		_, err := stdout.Write(data)
-		return err
-	}
-	return os.WriteFile(path, data, perm)
-}
-
-// isStdio reports whether path is the stdio sentinel and so should skip
-// existence checks like "refuse to overwrite".
-func isStdio(path string) bool {
-	return path == stdioPath
-}

cmd/nebula-cert/stdio_test.go

@@ -1,167 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"io"
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-// withStdin temporarily replaces stdinReader for the duration of t.
-func withStdin(t *testing.T, r io.Reader) {
-	t.Helper()
-	prev := stdinReader
-	stdinReader = r
-	t.Cleanup(func() { stdinReader = prev })
-}
-
-func Test_readInput_stdin(t *testing.T) {
-	withStdin(t, bytes.NewBufferString("hello"))
-	var claims ioClaims
-
-	got, err := readInput("path", "-", &claims)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("hello"), got)
-	assert.Equal(t, "path", claims.in)
-}
-
-func Test_readInput_file(t *testing.T) {
-	dir := t.TempDir()
-	p := filepath.Join(dir, "f")
-	require.NoError(t, os.WriteFile(p, []byte("file"), 0600))
-	var claims ioClaims
-
-	got, err := readInput("path", p, &claims)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("file"), got)
-	assert.Empty(t, claims.in)
-}
-
-func Test_readInput_doubleStdinErrors(t *testing.T) {
-	withStdin(t, bytes.NewBufferString("hello"))
-	var claims ioClaims
-
-	_, err := readInput("ca-key", "-", &claims)
-	require.NoError(t, err)
-
-	_, err = readInput("ca-crt", "-", &claims)
-	require.EqualError(t, err, `-ca-key and -ca-crt both set to "-", only one input may read from stdin`)
-}
-
-func Test_openInput_stdin(t *testing.T) {
-	withStdin(t, bytes.NewBufferString("hi"))
-	var claims ioClaims
-
-	r, err := openInput("ca", "-", &claims)
-	require.NoError(t, err)
-	defer r.Close()
-	b, err := io.ReadAll(r)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("hi"), b)
-}
-
-func Test_openInput_doubleStdinErrors(t *testing.T) {
-	withStdin(t, bytes.NewBufferString("hi"))
-	var claims ioClaims
-
-	r, err := openInput("ca", "-", &claims)
-	require.NoError(t, err)
-	r.Close()
-
-	_, err = openInput("crt", "-", &claims)
-	require.EqualError(t, err, `-ca and -crt both set to "-", only one input may read from stdin`)
-}
-
-func Test_writeOutput_stdout(t *testing.T) {
-	out := &bytes.Buffer{}
-
-	err := writeOutput("-", []byte("payload"), 0600, out)
-	require.NoError(t, err)
-	assert.Equal(t, "payload", out.String())
-}
-
-func Test_writeOutput_file(t *testing.T) {
-	dir := t.TempDir()
-	p := filepath.Join(dir, "f")
-	out := &bytes.Buffer{}
-
-	err := writeOutput(p, []byte("payload"), 0600, out)
-	require.NoError(t, err)
-	assert.Empty(t, out.String())
-	got, err := os.ReadFile(p)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("payload"), got)
-}
-
-func Test_reserveOutputs_noConflict(t *testing.T) {
-	var claims ioClaims
-	require.NoError(t, reserveOutputs(&claims,
-		"out-key", "/tmp/key",
-		"out-crt", "-",
-		"out-qr", "",
-	))
-	assert.Equal(t, "out-crt", claims.out)
-}
-
-func Test_reserveOutputs_conflict(t *testing.T) {
-	var claims ioClaims
-	err := reserveOutputs(&claims,
-		"out-key", "-",
-		"out-crt", "-",
-	)
-	require.EqualError(t, err, `-out-key and -out-crt both set to "-", only one output may write to stdout`)
-}
-
-func Test_reserveOutputs_panicsOnOddPairs(t *testing.T) {
-	defer func() {
-		r := recover()
-		require.NotNil(t, r)
-	}()
-	var claims ioClaims
-	_ = reserveOutputs(&claims, "out-key")
-}
-
-func Test_reserveInputs_noConflict(t *testing.T) {
-	var claims ioClaims
-	require.NoError(t, reserveInputs(&claims,
-		"ca-key", "/tmp/ca.key",
-		"ca-crt", "-",
-		"in-pub", "",
-	))
-	assert.Equal(t, "ca-crt", claims.in)
-}
-
-func Test_reserveInputs_conflict(t *testing.T) {
-	var claims ioClaims
-	err := reserveInputs(&claims,
-		"ca-key", "-",
-		"ca-crt", "-",
-	)
-	require.EqualError(t, err, `-ca-key and -ca-crt both set to "-", only one input may read from stdin`)
-}
-
-func Test_claimIn_idempotent(t *testing.T) {
-	// pre-claim then a lazy re-claim of the same flag should be a no-op
-	var claims ioClaims
-	require.NoError(t, claims.claimIn("ca-key"))
-	require.NoError(t, claims.claimIn("ca-key"))
-	assert.Equal(t, "ca-key", claims.in)
-}
-
-func Test_claimOut_idempotent(t *testing.T) {
-	var claims ioClaims
-	require.NoError(t, claims.claimOut("out-crt"))
-	require.NoError(t, claims.claimOut("out-crt"))
-	assert.Equal(t, "out-crt", claims.out)
-}
-
-func Test_isStdio(t *testing.T) {
-	assert.True(t, isStdio("-"))
-	assert.False(t, isStdio(""))
-	assert.False(t, isStdio("./-"))
-	assert.False(t, isStdio("foo"))
-}

cmd/nebula-cert/verify.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strings"
 	"time"
 
 	"github.com/slackhq/nebula/cert"
@@ -39,26 +40,24 @@ func verify(args []string, out io.Writer, errOut io.Writer) error {
 		return err
 	}
 
-	var claims ioClaims
-	if err := reserveInputs(&claims,
-		"ca", *vf.caPath,
-		"crt", *vf.certPath,
-	); err != nil {
-		return err
-	}
-
-	caReader, err := openInput("ca", *vf.caPath, &claims)
+	rawCACert, err := os.ReadFile(*vf.caPath)
 	if err != nil {
 		return fmt.Errorf("error while reading ca: %w", err)
 	}
-	defer caReader.Close()
 
-	caPool, err := cert.NewCAPoolFromPEMReader(caReader)
-	if err != nil && !errors.Is(err, cert.ErrExpired) {
-		return fmt.Errorf("error while adding ca cert to pool: %w", err)
+	caPool := cert.NewCAPool()
+	for {
+		rawCACert, err = caPool.AddCAFromPEM(rawCACert)
+		if err != nil {
+			return fmt.Errorf("error while adding ca cert to pool: %w", err)
+		}
+
+		if rawCACert == nil || len(rawCACert) == 0 || strings.TrimSpace(string(rawCACert)) == "" {
+			break
+		}
 	}
 
-	rawCert, err := readInput("crt", *vf.certPath, &claims)
+	rawCert, err := os.ReadFile(*vf.certPath)
 	if err != nil {
 		return fmt.Errorf("unable to read crt: %w", err)
 	}
@@ -93,7 +92,6 @@ func verifySummary() string {
 func verifyHelp(out io.Writer) {
 	vf := newVerifyFlags()
 	_, _ = out.Write([]byte("Usage of " + os.Args[0] + " " + verifySummary() + "\n"))
-	_, _ = out.Write([]byte(stdioHelpText))
 	vf.set.SetOutput(out)
 	vf.set.PrintDefaults()
 }

cmd/nebula-cert/verify_test.go

@@ -23,7 +23,6 @@ func Test_verifyHelp(t *testing.T) {
 	assert.Equal(
 		t,
 		"Usage of "+os.Args[0]+" verify <flags>: verifies a certificate isn't expired and was signed by a trusted authority.\n"+
-			"  Pass \"-\" to any path flag to read from stdin or write to stdout.\n"+
 			"  -ca string\n"+
 			"    \tRequired: path to a file containing one or more ca certificates\n"+
 			"  -crt string\n"+
@@ -65,7 +64,7 @@ func Test_verify(t *testing.T) {
 	err = verify([]string{"-ca", caFile.Name(), "-crt", "does_not_exist"}, ob, eb)
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
-	require.ErrorIs(t, err, cert.ErrInvalidPEMBlock)
+	require.EqualError(t, err, "error while adding ca cert to pool: input did not contain a valid PEM encoded block")
 
 	// make a ca for later
 	caPub, caPriv, _ := ed25519.GenerateKey(rand.Reader)
@@ -123,46 +122,3 @@ func Test_verify(t *testing.T) {
 	assert.Empty(t, eb.String())
 	require.NoError(t, err)
 }
-
-func Test_verify_stdio(t *testing.T) {
-	ob := &bytes.Buffer{}
-	eb := &bytes.Buffer{}
-
-	caPub, caPriv, _ := ed25519.GenerateKey(rand.Reader)
-	ca, _ := NewTestCaCert("test-ca", caPub, caPriv, time.Now().Add(time.Hour*-1), time.Now().Add(time.Hour*2), nil, nil, nil)
-	caPEM, _ := ca.MarshalPEM()
-
-	crt, _ := NewTestCert(ca, caPriv, "test-cert", time.Now().Add(time.Hour*-1), time.Now().Add(time.Hour), nil, nil, nil)
-	crtPEM, _ := crt.MarshalPEM()
-
-	caFile, err := os.CreateTemp("", "verify-ca")
-	require.NoError(t, err)
-	defer os.Remove(caFile.Name())
-	caFile.Write(caPEM)
-
-	// crt on stdin, ca on disk
-	withStdin(t, bytes.NewReader(crtPEM))
-	require.NoError(t, verify([]string{"-ca", caFile.Name(), "-crt", "-"}, ob, eb))
-	assert.Empty(t, ob.String())
-	assert.Empty(t, eb.String())
-
-	// ca on stdin, crt on disk
-	certFile, err := os.CreateTemp("", "verify-cert")
-	require.NoError(t, err)
-	defer os.Remove(certFile.Name())
-	certFile.Write(crtPEM)
-
-	withStdin(t, bytes.NewReader(caPEM))
-	ob.Reset()
-	eb.Reset()
-	require.NoError(t, verify([]string{"-ca", "-", "-crt", certFile.Name()}, ob, eb))
-	assert.Empty(t, ob.String())
-	assert.Empty(t, eb.String())
-
-	// both flags on stdin should error
-	withStdin(t, bytes.NewReader(caPEM))
-	ob.Reset()
-	eb.Reset()
-	require.EqualError(t, verify([]string{"-ca", "-", "-crt", "-"}, ob, eb),
-		`-ca and -crt both set to "-", only one input may read from stdin`)
-}

cmd/nebula-service/logs_generic.go

@@ -3,15 +3,8 @@
 
 package main
 
-import (
-	"log/slog"
-	"os"
+import "github.com/sirupsen/logrus"
 
-	"github.com/slackhq/nebula/logging"
-)
-
-// newPlatformLogger returns a *slog.Logger that writes to stdout. Non-Windows
-// platforms have no special sink to integrate with.
-func newPlatformLogger() *slog.Logger {
-	return logging.NewLogger(os.Stdout)
+func HookLogger(l *logrus.Logger) {
+	// Do nothing, let the logs flow to stdout/stderr
 }

cmd/nebula-service/logs_windows.go

@@ -1,86 +1,54 @@
 package main
 
 import (
-	"context"
-	"log/slog"
-	"strings"
-	"sync"
+	"fmt"
+	"io/ioutil"
+	"os"
 
-	"github.com/slackhq/nebula/logging"
+	"github.com/kardianos/service"
+	"github.com/sirupsen/logrus"
 )
 
-// newPlatformLogger returns a *slog.Logger that routes every log record
-// through the Windows service logger so records end up in the Windows
-// Event Log. All the heavy lifting (level management, format swap,
-// timestamp toggle, WithAttrs/WithGroup) comes from logging.NewHandler;
-// this file only contributes:
-//
-//   - an io.Writer that forwards each formatted line to the service
-//     logger at the current record's Event Log severity, and
-//   - a thin severityTag that embeds *logging.Handler and overrides
-//     only Handle / WithAttrs / WithGroup, so Event Viewer's severity
-//     column and severity-based filters keep working the way they did
-//     before the slog migration.
-//
-// Format (text vs json) is carried by the embedded *logging.Handler, so
-// logging.format: json in config still produces JSON lines in Event
-// Viewer, same as the pre-slog logrus setup.
-func newPlatformLogger() *slog.Logger {
-	w := &eventLogWriter{}
-	return slog.New(&severityTag{Handler: logging.NewHandler(w), w: w})
+// HookLogger routes the logrus logs through the service logger so that they end up in the Windows Event Viewer
+// logrus output will be discarded
+func HookLogger(l *logrus.Logger) {
+	l.AddHook(newLogHook(logger))
+	l.SetOutput(ioutil.Discard)
 }
 
-// eventLogWriter forwards slog-formatted lines to the Windows service
-// logger at the severity most recently stashed by severityTag.Handle.
-// The mutex serializes the stash + inner.Handle + Write cycle per record
-// across all concurrent goroutines; slog's builtin text/json handlers
-// each hold their own mutex around Write, but that only protects the
-// Write call itself, not our stash-then-handle sequence.
-type eventLogWriter struct {
-	mu    sync.Mutex
-	level slog.Level
+type logHook struct {
+	sl service.Logger
 }
 
-func (w *eventLogWriter) Write(p []byte) (int, error) {
-	line := strings.TrimRight(string(p), "\n")
-	switch {
-	case w.level >= slog.LevelError:
-		return len(p), logger.Error(line)
-	case w.level >= slog.LevelWarn:
-		return len(p), logger.Warning(line)
+func newLogHook(sl service.Logger) *logHook {
+	return &logHook{sl: sl}
+}
+
+func (h *logHook) Fire(entry *logrus.Entry) error {
+	line, err := entry.String()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Unable to read entry, %v", err)
+		return err
+	}
+
+	switch entry.Level {
+	case logrus.PanicLevel:
+		return h.sl.Error(line)
+	case logrus.FatalLevel:
+		return h.sl.Error(line)
+	case logrus.ErrorLevel:
+		return h.sl.Error(line)
+	case logrus.WarnLevel:
+		return h.sl.Warning(line)
+	case logrus.InfoLevel:
+		return h.sl.Info(line)
+	case logrus.DebugLevel:
+		return h.sl.Info(line)
 	default:
-		return len(p), logger.Info(line)
+		return nil
 	}
 }
 
-// severityTag embeds *logging.Handler to pick up everything it does for
-// free (Enabled, SetLevel, GetLevel, SetFormat, GetFormat,
-// SetDisableTimestamp) and overrides only Handle / WithAttrs / WithGroup
-// so each record's slog.Level is stashed on the writer before formatting
-// and so derived handlers stay wrapped as severityTag rather than
-// downgrading to bare *logging.Handler.
-type severityTag struct {
-	*logging.Handler
-	w *eventLogWriter
-}
-
-func (s *severityTag) Handle(ctx context.Context, r slog.Record) error {
-	s.w.mu.Lock()
-	defer s.w.mu.Unlock()
-	s.w.level = r.Level
-	return s.Handler.Handle(ctx, r)
-}
-
-func (s *severityTag) WithAttrs(attrs []slog.Attr) slog.Handler {
-	if len(attrs) == 0 {
-		return s
-	}
-	return &severityTag{Handler: s.Handler.WithAttrs(attrs).(*logging.Handler), w: s.w}
-}
-
-func (s *severityTag) WithGroup(name string) slog.Handler {
-	if name == "" {
-		return s
-	}
-	return &severityTag{Handler: s.Handler.WithGroup(name).(*logging.Handler), w: s.w}
+func (h *logHook) Levels() []logrus.Level {
+	return logrus.AllLevels
 }

cmd/nebula-service/main.go

@@ -4,12 +4,10 @@ import (
 	"flag"
 	"fmt"
 	"os"
-	"runtime/debug"
-	"strings"
 
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula"
 	"github.com/slackhq/nebula/config"
-	"github.com/slackhq/nebula/logging"
 	"github.com/slackhq/nebula/util"
 )
 
@@ -20,17 +18,6 @@ import (
 // at compile-time.
 var Build string
 
-func init() {
-	if Build == "" {
-		info, ok := debug.ReadBuildInfo()
-		if !ok {
-			return
-		}
-
-		Build = strings.TrimPrefix(info.Main.Version, "v")
-	}
-}
-
 func main() {
 	serviceFlag := flag.String("service", "", "Control the system service.")
 	configPath := flag.String("config", "", "Path to either a file or directory to load configuration from")
@@ -50,25 +37,20 @@ func main() {
 		os.Exit(0)
 	}
 
-	l := logging.NewLogger(os.Stdout)
-
 	if *serviceFlag != "" {
-		if err := doService(configPath, configTest, Build, serviceFlag); err != nil {
-			l.Error("Service command failed", "error", err)
-			os.Exit(1)
-		}
-		return
+		doService(configPath, configTest, Build, serviceFlag)
+		os.Exit(1)
 	}
 
 	if *configPath == "" {
-		p, err := config.DefaultPath()
-		if err != nil {
-			fmt.Println(err)
-			os.Exit(1)
-		}
-		*configPath = p
+		fmt.Println("-config flag must be set")
+		flag.Usage()
+		os.Exit(1)
 	}
 
+	l := logrus.New()
+	l.Out = os.Stdout
+
 	c := config.NewC(l)
 	err := c.Load(*configPath)
 	if err != nil {
@@ -76,16 +58,6 @@ func main() {
 		os.Exit(1)
 	}
 
-	if err := logging.ApplyConfig(l, c); err != nil {
-		fmt.Printf("failed to apply logging config: %s", err)
-		os.Exit(1)
-	}
-	c.RegisterReloadCallback(func(c *config.C) {
-		if err := logging.ApplyConfig(l, c); err != nil {
-			l.Error("Failed to reconfigure logger on reload", "error", err)
-		}
-	})
-
 	ctrl, err := nebula.Main(c, *configTest, Build, l, nil)
 	if err != nil {
 		util.LogWithContextIfNeeded("Failed to start", err, l)
@@ -93,20 +65,8 @@ func main() {
 	}
 
 	if !*configTest {
-		wait, err := ctrl.Start()
-		if err != nil {
-			util.LogWithContextIfNeeded("Error while running", err, l)
-			os.Exit(1)
-		}
-
-		go ctrl.ShutdownBlock()
-
-		if err := wait(); err != nil {
-			l.Error("Nebula stopped due to fatal error", "error", err)
-			os.Exit(2)
-		}
-
-		l.Info("Goodbye")
+		ctrl.Start()
+		ctrl.ShutdownBlock()
 	}
 
 	os.Exit(0)

cmd/nebula-service/service.go

@@ -3,11 +3,13 @@ package main
 import (
 	"fmt"
 	"log"
+	"os"
+	"path/filepath"
 
 	"github.com/kardianos/service"
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula"
 	"github.com/slackhq/nebula/config"
-	"github.com/slackhq/nebula/logging"
 )
 
 var logger service.Logger
@@ -23,7 +25,8 @@ func (p *program) Start(s service.Service) error {
 	// Start should not block.
 	logger.Info("Nebula service starting.")
 
-	l := newPlatformLogger()
+	l := logrus.New()
+	HookLogger(l)
 
 	c := config.NewC(l)
 	err := c.Load(*p.configPath)
@@ -31,15 +34,6 @@ func (p *program) Start(s service.Service) error {
 		return fmt.Errorf("failed to load config: %s", err)
 	}
 
-	if err := logging.ApplyConfig(l, c); err != nil {
-		return fmt.Errorf("failed to apply logging config: %s", err)
-	}
-	c.RegisterReloadCallback(func(c *config.C) {
-		if err := logging.ApplyConfig(l, c); err != nil {
-			l.Error("Failed to reconfigure logger on reload", "error", err)
-		}
-	})
-
 	p.control, err = nebula.Main(c, *p.configTest, Build, l, nil)
 	if err != nil {
 		return err
@@ -55,13 +49,24 @@ func (p *program) Stop(s service.Service) error {
 	return nil
 }
 
-func doService(configPath *string, configTest *bool, build string, serviceFlag *string) error {
+func fileExists(filename string) bool {
+	_, err := os.Stat(filename)
+	if os.IsNotExist(err) {
+		return false
+	}
+	return true
+}
+
+func doService(configPath *string, configTest *bool, build string, serviceFlag *string) {
 	if *configPath == "" {
-		p, err := config.DefaultPath()
+		ex, err := os.Executable()
 		if err != nil {
-			return err
+			panic(err)
+		}
+		*configPath = filepath.Dir(ex) + "/config.yaml"
+		if !fileExists(*configPath) {
+			*configPath = filepath.Dir(ex) + "/config.yml"
 		}
-		*configPath = p
 	}
 
 	svcConfig := &service.Config{
@@ -80,16 +85,16 @@ func doService(configPath *string, configTest *bool, build string, serviceFlag *
 	// Here are what the different loggers are doing:
 	// - `log` is the standard go log utility, meant to be used while the process is still attached to stdout/stderr
 	// - `logger` is the service log utility that may be attached to a special place depending on OS (Windows will have it attached to the event log)
-	// - in program.Start we build a *slog.Logger via newPlatformLogger; on non-Windows that is a stdout-backed slog logger, on Windows it routes records through the service logger
+	// - above, in `Run` we create a `logrus.Logger` which is what nebula expects to use
 	s, err := service.New(prg, svcConfig)
 	if err != nil {
-		return err
+		log.Fatal(err)
 	}
 
 	errs := make(chan error, 5)
 	logger, err = s.Logger(errs)
 	if err != nil {
-		return err
+		log.Fatal(err)
 	}
 
 	go func() {
@@ -104,16 +109,18 @@ func doService(configPath *string, configTest *bool, build string, serviceFlag *
 
 	switch *serviceFlag {
 	case "run":
-		if err := s.Run(); err != nil {
+		err = s.Run()
+		if err != nil {
 			// Route any errors to the system logger
 			logger.Error(err)
 		}
 	default:
-		if err := service.Control(s, *serviceFlag); err != nil {
+		err := service.Control(s, *serviceFlag)
+		if err != nil {
 			log.Printf("Valid actions: %q\n", service.ControlAction)
-			return err
+			log.Fatal(err)
 		}
+		return
 	}
 
-	return nil
 }

cmd/nebula/main.go

@@ -4,12 +4,10 @@ import (
 	"flag"
 	"fmt"
 	"os"
-	"runtime/debug"
-	"strings"
 
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula"
 	"github.com/slackhq/nebula/config"
-	"github.com/slackhq/nebula/logging"
 	"github.com/slackhq/nebula/util"
 )
 
@@ -20,17 +18,6 @@ import (
 // at compile-time.
 var Build string
 
-func init() {
-	if Build == "" {
-		info, ok := debug.ReadBuildInfo()
-		if !ok {
-			return
-		}
-
-		Build = strings.TrimPrefix(info.Main.Version, "v")
-	}
-}
-
 func main() {
 	configPath := flag.String("config", "", "Path to either a file or directory to load configuration from")
 	configTest := flag.Bool("test", false, "Test the config and print the end result. Non zero exit indicates a faulty config")
@@ -50,15 +37,13 @@ func main() {
 	}
 
 	if *configPath == "" {
-		p, err := config.DefaultPath()
-		if err != nil {
-			fmt.Println(err)
-			os.Exit(1)
-		}
-		*configPath = p
+		fmt.Println("-config flag must be set")
+		flag.Usage()
+		os.Exit(1)
 	}
 
-	l := logging.NewLogger(os.Stdout)
+	l := logrus.New()
+	l.Out = os.Stdout
 
 	c := config.NewC(l)
 	err := c.Load(*configPath)
@@ -67,16 +52,6 @@ func main() {
 		os.Exit(1)
 	}
 
-	if err := logging.ApplyConfig(l, c); err != nil {
-		fmt.Printf("failed to apply logging config: %s", err)
-		os.Exit(1)
-	}
-	c.RegisterReloadCallback(func(c *config.C) {
-		if err := logging.ApplyConfig(l, c); err != nil {
-			l.Error("Failed to reconfigure logger on reload", "error", err)
-		}
-	})
-
 	ctrl, err := nebula.Main(c, *configTest, Build, l, nil)
 	if err != nil {
 		util.LogWithContextIfNeeded("Failed to start", err, l)
@@ -84,21 +59,9 @@ func main() {
 	}
 
 	if !*configTest {
-		wait, err := ctrl.Start()
-		if err != nil {
-			util.LogWithContextIfNeeded("Error while running", err, l)
-			os.Exit(1)
-		}
-
-		go ctrl.ShutdownBlock()
+		ctrl.Start()
 		notifyReady(l)
-
-		if err := wait(); err != nil {
-			l.Error("Nebula stopped due to fatal error", "error", err)
-			os.Exit(2)
-		}
-
-		l.Info("Goodbye")
+		ctrl.ShutdownBlock()
 	}
 
 	os.Exit(0)

cmd/nebula/notify_linux.go

@@ -1,10 +1,11 @@
 package main
 
 import (
-	"log/slog"
 	"net"
 	"os"
 	"time"
+
+	"github.com/sirupsen/logrus"
 )
 
 // SdNotifyReady tells systemd the service is ready and dependent services can now be started
@@ -12,30 +13,30 @@ import (
 // https://www.freedesktop.org/software/systemd/man/systemd.service.html
 const SdNotifyReady = "READY=1"
 
-func notifyReady(l *slog.Logger) {
+func notifyReady(l *logrus.Logger) {
 	sockName := os.Getenv("NOTIFY_SOCKET")
 	if sockName == "" {
-		l.Debug("NOTIFY_SOCKET systemd env var not set, not sending ready signal")
+		l.Debugln("NOTIFY_SOCKET systemd env var not set, not sending ready signal")
 		return
 	}
 
 	conn, err := net.DialTimeout("unixgram", sockName, time.Second)
 	if err != nil {
-		l.Error("failed to connect to systemd notification socket", "error", err)
+		l.WithError(err).Error("failed to connect to systemd notification socket")
 		return
 	}
 	defer conn.Close()
 
 	err = conn.SetWriteDeadline(time.Now().Add(time.Second))
 	if err != nil {
-		l.Error("failed to set the write deadline for the systemd notification socket", "error", err)
+		l.WithError(err).Error("failed to set the write deadline for the systemd notification socket")
 		return
 	}
 
 	if _, err = conn.Write([]byte(SdNotifyReady)); err != nil {
-		l.Error("failed to signal the systemd notification socket", "error", err)
+		l.WithError(err).Error("failed to signal the systemd notification socket")
 		return
 	}
 
-	l.Debug("notified systemd the service is ready")
+	l.Debugln("notified systemd the service is ready")
 }

cmd/nebula/notify_notlinux.go

@@ -3,8 +3,8 @@
 
 package main
 
-import "log/slog"
+import "github.com/sirupsen/logrus"
 
-func notifyReady(_ *slog.Logger) {
+func notifyReady(_ *logrus.Logger) {
 	// No init service to notify
 }

config/config.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"log/slog"
 	"math"
 	"os"
 	"os/signal"
@@ -17,7 +16,8 @@ import (
 	"time"
 
 	"dario.cat/mergo"
-	"go.yaml.in/yaml/v3"
+	"github.com/sirupsen/logrus"
+	"gopkg.in/yaml.v3"
 )
 
 type C struct {
@@ -26,11 +26,11 @@ type C struct {
 	Settings    map[string]any
 	oldSettings map[string]any
 	callbacks   []func(*C)
-	l           *slog.Logger
+	l           *logrus.Logger
 	reloadLock  sync.Mutex
 }
 
-func NewC(l *slog.Logger) *C {
+func NewC(l *logrus.Logger) *C {
 	return &C{
 		Settings: make(map[string]any),
 		l:        l,
@@ -107,18 +107,12 @@ func (c *C) HasChanged(k string) bool {
 
 	newVals, err := yaml.Marshal(nv)
 	if err != nil {
-		c.l.Error("Error while marshaling new config",
-			"config_path", k,
-			"error", err,
-		)
+		c.l.WithField("config_path", k).WithError(err).Error("Error while marshaling new config")
 	}
 
 	oldVals, err := yaml.Marshal(ov)
 	if err != nil {
-		c.l.Error("Error while marshaling old config",
-			"config_path", k,
-			"error", err,
-		)
+		c.l.WithField("config_path", k).WithError(err).Error("Error while marshaling old config")
 	}
 
 	return string(newVals) != string(oldVals)
@@ -160,10 +154,7 @@ func (c *C) ReloadConfig() {
 
 	err := c.Load(c.path)
 	if err != nil {
-		c.l.Error("Error occurred while reloading config",
-			"config_path", c.path,
-			"error", err,
-		)
+		c.l.WithField("config_path", c.path).WithError(err).Error("Error occurred while reloading config")
 		return
 	}
 

config/config_test.go

@@ -10,7 +10,7 @@ import (
 	"github.com/slackhq/nebula/test"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"go.yaml.in/yaml/v3"
+	"gopkg.in/yaml.v3"
 )
 
 func TestConfig_Load(t *testing.T) {

config/default.go

@@ -1,29 +0,0 @@
-package config
-
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-)
-
-// DefaultPath returns a path to a config file alongside the running executable, preferring config.yaml over config.yml.
-// If neither file exists an error is returned that names both paths checked.
-func DefaultPath() (string, error) {
-	ex, err := os.Executable()
-	if err != nil {
-		return "", err
-	}
-	return defaultPathInDir(filepath.Dir(ex))
-}
-
-func defaultPathInDir(dir string) (string, error) {
-	yamlPath := filepath.Join(dir, "config.yaml")
-	if _, err := os.Stat(yamlPath); err == nil {
-		return yamlPath, nil
-	}
-	ymlPath := filepath.Join(dir, "config.yml")
-	if _, err := os.Stat(ymlPath); err == nil {
-		return ymlPath, nil
-	}
-	return "", fmt.Errorf("no default config found at %s or %s", yamlPath, ymlPath)
-}

config/default_test.go

@@ -1,67 +0,0 @@
-package config
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestDefaultPathInDir(t *testing.T) {
-	t.Run("prefers config.yaml when both exist", func(t *testing.T) {
-		dir := t.TempDir()
-		want := filepath.Join(dir, "config.yaml")
-		other := filepath.Join(dir, "config.yml")
-		require.NoError(t, os.WriteFile(want, []byte("a: 1"), 0644))
-		require.NoError(t, os.WriteFile(other, []byte("a: 2"), 0644))
-
-		got, err := defaultPathInDir(dir)
-		require.NoError(t, err)
-		assert.Equal(t, want, got)
-	})
-
-	t.Run("returns config.yaml when only it exists", func(t *testing.T) {
-		dir := t.TempDir()
-		want := filepath.Join(dir, "config.yaml")
-		require.NoError(t, os.WriteFile(want, []byte("a: 1"), 0644))
-
-		got, err := defaultPathInDir(dir)
-		require.NoError(t, err)
-		assert.Equal(t, want, got)
-	})
-
-	t.Run("falls back to config.yml when only it exists", func(t *testing.T) {
-		dir := t.TempDir()
-		want := filepath.Join(dir, "config.yml")
-		require.NoError(t, os.WriteFile(want, []byte("a: 1"), 0644))
-
-		got, err := defaultPathInDir(dir)
-		require.NoError(t, err)
-		assert.Equal(t, want, got)
-	})
-
-	t.Run("errors when neither exists and names both paths", func(t *testing.T) {
-		dir := t.TempDir()
-		got, err := defaultPathInDir(dir)
-		assert.Empty(t, got)
-		require.Error(t, err)
-		assert.Contains(t, err.Error(), filepath.Join(dir, "config.yaml"))
-		assert.Contains(t, err.Error(), filepath.Join(dir, "config.yml"))
-	})
-}
-
-func TestDefaultPath(t *testing.T) {
-	got, err := DefaultPath()
-	if err != nil {
-		ex, exErr := os.Executable()
-		require.NoError(t, exErr)
-		assert.Contains(t, err.Error(), filepath.Dir(ex))
-		return
-	}
-	ex, err := os.Executable()
-	require.NoError(t, err)
-	assert.Equal(t, filepath.Dir(ex), filepath.Dir(got))
-	assert.Contains(t, []string{"config.yaml", "config.yml"}, filepath.Base(got))
-}

connection_manager.go

@@ -5,12 +5,13 @@ import (
 	"context"
 	"encoding/binary"
 	"fmt"
-	"log/slog"
 	"net/netip"
 	"sync"
 	"sync/atomic"
 	"time"
 
+	"github.com/rcrowley/go-metrics"
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/config"
 	"github.com/slackhq/nebula/header"
@@ -44,16 +45,19 @@ type connectionManager struct {
 	inactivityTimeout       atomic.Int64
 	dropInactive            atomic.Bool
 
-	l *slog.Logger
+	metricsTxPunchy metrics.Counter
+
+	l *logrus.Logger
 }
 
-func newConnectionManagerFromConfig(l *slog.Logger, c *config.C, hm *HostMap, p *Punchy) *connectionManager {
+func newConnectionManagerFromConfig(l *logrus.Logger, c *config.C, hm *HostMap, p *Punchy) *connectionManager {
 	cm := &connectionManager{
-		hostMap:       hm,
-		l:             l,
-		punchy:        p,
-		relayUsed:     make(map[uint32]struct{}),
-		relayUsedLock: &sync.RWMutex{},
+		hostMap:         hm,
+		l:               l,
+		punchy:          p,
+		relayUsed:       make(map[uint32]struct{}),
+		relayUsedLock:   &sync.RWMutex{},
+		metricsTxPunchy: metrics.GetOrRegisterCounter("messages.tx.punchy", nil),
 	}
 
 	cm.reload(c, true)
@@ -81,10 +85,9 @@ func (cm *connectionManager) reload(c *config.C, initial bool) {
 		old := cm.getInactivityTimeout()
 		cm.inactivityTimeout.Store((int64)(c.GetDuration("tunnels.inactivity_timeout", 10*time.Minute)))
 		if !initial {
-			cm.l.Info("Inactivity timeout has changed",
-				"oldDuration", old,
-				"newDuration", cm.getInactivityTimeout(),
-			)
+			cm.l.WithField("oldDuration", old).
+				WithField("newDuration", cm.getInactivityTimeout()).
+				Info("Inactivity timeout has changed")
 		}
 	}
 
@@ -92,10 +95,9 @@ func (cm *connectionManager) reload(c *config.C, initial bool) {
 		old := cm.dropInactive.Load()
 		cm.dropInactive.Store(c.GetBool("tunnels.drop_inactive", false))
 		if !initial {
-			cm.l.Info("Drop inactive setting has changed",
-				"oldBool", old,
-				"newBool", cm.dropInactive.Load(),
-			)
+			cm.l.WithField("oldBool", old).
+				WithField("newBool", cm.dropInactive.Load()).
+				Info("Drop inactive setting has changed")
 		}
 	}
 }
@@ -136,6 +138,14 @@ func (cm *connectionManager) getAndResetTrafficCheck(h *HostInfo, now time.Time)
 	return in, out
 }
 
+// AddTrafficWatch must be called for every new HostInfo.
+// We will continue to monitor the HostInfo until the tunnel is dropped.
+func (cm *connectionManager) AddTrafficWatch(h *HostInfo) {
+	if h.out.Swap(true) == false {
+		cm.trafficTimer.Add(h.localIndexId, cm.checkInterval)
+	}
+}
+
 func (cm *connectionManager) Start(ctx context.Context) {
 	clockSource := time.NewTicker(cm.trafficTimer.t.tickDuration)
 	defer clockSource.Stop()
@@ -246,7 +256,7 @@ func (cm *connectionManager) migrateRelayUsed(oldhostinfo, newhostinfo *HostInfo
 			var err error
 			index, err = AddRelay(cm.l, newhostinfo, cm.hostMap, r.PeerAddr, nil, r.Type, Requested)
 			if err != nil {
-				cm.l.Error("failed to migrate relay to new hostinfo", "error", err)
+				cm.l.WithError(err).Error("failed to migrate relay to new hostinfo")
 				continue
 			}
 			switch r.Type {
@@ -294,16 +304,16 @@ func (cm *connectionManager) migrateRelayUsed(oldhostinfo, newhostinfo *HostInfo
 
 		msg, err := req.Marshal()
 		if err != nil {
-			cm.l.Error("failed to marshal Control message to migrate relay", "error", err)
+			cm.l.WithError(err).Error("failed to marshal Control message to migrate relay")
 		} else {
 			cm.intf.SendMessageToHostInfo(header.Control, 0, newhostinfo, msg, make([]byte, 12), make([]byte, mtu))
-			cm.l.Info("send CreateRelayRequest",
-				"relayFrom", relayFrom,
-				"relayTo", relayTo,
-				"initiatorRelayIndex", req.InitiatorRelayIndex,
-				"responderRelayIndex", req.ResponderRelayIndex,
-				"vpnAddrs", newhostinfo.vpnAddrs,
-			)
+			cm.l.WithFields(logrus.Fields{
+				"relayFrom":           req.RelayFromAddr,
+				"relayTo":             req.RelayToAddr,
+				"initiatorRelayIndex": req.InitiatorRelayIndex,
+				"responderRelayIndex": req.ResponderRelayIndex,
+				"vpnAddrs":            newhostinfo.vpnAddrs}).
+				Info("send CreateRelayRequest")
 		}
 	}
 }
@@ -315,7 +325,7 @@ func (cm *connectionManager) makeTrafficDecision(localIndex uint32, now time.Tim
 
 	hostinfo := cm.hostMap.Indexes[localIndex]
 	if hostinfo == nil {
-		cm.l.Debug("Not found in hostmap", "localIndex", localIndex)
+		cm.l.WithField("localIndex", localIndex).Debugln("Not found in hostmap")
 		return doNothing, nil, nil
 	}
 
@@ -335,15 +345,16 @@ func (cm *connectionManager) makeTrafficDecision(localIndex uint32, now time.Tim
 	// A hostinfo is determined alive if there is incoming traffic
 	if inTraffic {
 		decision := doNothing
-		if cm.l.Enabled(context.Background(), slog.LevelDebug) {
-			hostinfo.logger(cm.l).Debug("Tunnel status",
-				"tunnelCheck", m{"state": "alive", "method": "passive"},
-			)
+		if cm.l.Level >= logrus.DebugLevel {
+			hostinfo.logger(cm.l).
+				WithField("tunnelCheck", m{"state": "alive", "method": "passive"}).
+				Debug("Tunnel status")
 		}
 		hostinfo.pendingDeletion.Store(false)
 
 		if mainHostInfo {
 			decision = tryRehandshake
+
 		} else {
 			if cm.shouldSwapPrimary(hostinfo) {
 				decision = swapPrimary
@@ -357,7 +368,7 @@ func (cm *connectionManager) makeTrafficDecision(localIndex uint32, now time.Tim
 
 		if !outTraffic {
 			// Send a punch packet to keep the NAT state alive
-			cm.punchy.SendPunch(hostinfo)
+			cm.sendPunch(hostinfo)
 		}
 
 		return decision, hostinfo, primary
@@ -365,9 +376,9 @@ func (cm *connectionManager) makeTrafficDecision(localIndex uint32, now time.Tim
 
 	if hostinfo.pendingDeletion.Load() {
 		// We have already sent a test packet and nothing was returned, this hostinfo is dead
-		hostinfo.logger(cm.l).Info("Tunnel status",
-			"tunnelCheck", m{"state": "dead", "method": "active"},
-		)
+		hostinfo.logger(cm.l).
+			WithField("tunnelCheck", m{"state": "dead", "method": "active"}).
+			Info("Tunnel status")
 
 		return deleteTunnel, hostinfo, nil
 	}
@@ -378,39 +389,40 @@ func (cm *connectionManager) makeTrafficDecision(localIndex uint32, now time.Tim
 			inactiveFor, isInactive := cm.isInactive(hostinfo, now)
 			if isInactive {
 				// Tunnel is inactive, tear it down
-				hostinfo.logger(cm.l).Info("Dropping tunnel due to inactivity",
-					"inactiveDuration", inactiveFor,
-					"primary", mainHostInfo,
-				)
+				hostinfo.logger(cm.l).
+					WithField("inactiveDuration", inactiveFor).
+					WithField("primary", mainHostInfo).
+					Info("Dropping tunnel due to inactivity")
 
 				return closeTunnel, hostinfo, primary
 			}
 
 			// If we aren't sending or receiving traffic then its an unused tunnel and we don't to test the tunnel.
 			// Just maintain NAT state if configured to do so.
-			cm.punchy.SendPunch(hostinfo)
+			cm.sendPunch(hostinfo)
 			cm.trafficTimer.Add(hostinfo.localIndexId, cm.checkInterval)
 			return doNothing, nil, nil
 		}
 
-		// We aren't receiving traffic but we are sending it. The outbound
-		// traffic itself refreshes the primary remote's NAT state; this
-		// fans out to non-primary remotes, but only if target_all_remotes
-		// is configured.
-		cm.punchy.SendPunchToAll(hostinfo)
+		if cm.punchy.GetTargetEverything() {
+			// This is similar to the old punchy behavior with a slight optimization.
+			// We aren't receiving traffic but we are sending it, punch on all known
+			// ips in case we need to re-prime NAT state
+			cm.sendPunch(hostinfo)
+		}
 
-		if cm.l.Enabled(context.Background(), slog.LevelDebug) {
-			hostinfo.logger(cm.l).Debug("Tunnel status",
-				"tunnelCheck", m{"state": "testing", "method": "active"},
-			)
+		if cm.l.Level >= logrus.DebugLevel {
+			hostinfo.logger(cm.l).
+				WithField("tunnelCheck", m{"state": "testing", "method": "active"}).
+				Debug("Tunnel status")
 		}
 
 		// Send a test packet to trigger an authenticated tunnel test, this should suss out any lingering tunnel issues
 		decision = sendTestPacket
 
 	} else {
-		if cm.l.Enabled(context.Background(), slog.LevelDebug) {
-			hostinfo.logger(cm.l).Debug("Hostinfo sadness")
+		if cm.l.Level >= logrus.DebugLevel {
+			hostinfo.logger(cm.l).Debugf("Hostinfo sadness")
 		}
 	}
 
@@ -449,10 +461,6 @@ func (cm *connectionManager) shouldSwapPrimary(current *HostInfo) bool {
 	}
 
 	crt := cm.intf.pki.getCertState().getCertificate(current.ConnectionState.myCert.Version())
-	if crt == nil {
-		//my cert was reloaded away. We should definitely swap from this tunnel
-		return true
-	}
 	// If this tunnel is using the latest certificate then we should swap it to primary for a bit and see if things
 	// settle down.
 	return bytes.Equal(current.ConnectionState.myCert.Signature(), crt.Signature())
@@ -467,84 +475,70 @@ func (cm *connectionManager) swapPrimary(current, primary *HostInfo) {
 	cm.hostMap.Unlock()
 }
 
-// isInvalidCertificate decides if we should destroy a tunnel.
-// returns true if pki.disconnect_invalid is true and the certificate is no longer valid.
-// Blocklisted certificates will skip the pki.disconnect_invalid check and return true.
+// isInvalidCertificate will check if we should destroy a tunnel if pki.disconnect_invalid is true and
+// the certificate is no longer valid. Block listed certificates will skip the pki.disconnect_invalid
+// check and return true.
 func (cm *connectionManager) isInvalidCertificate(now time.Time, hostinfo *HostInfo) bool {
 	remoteCert := hostinfo.GetCert()
 	if remoteCert == nil {
-		return false //don't tear down tunnels for handshakes in progress
+		return false
 	}
 
 	caPool := cm.intf.pki.GetCAPool()
 	err := caPool.VerifyCachedCertificate(now, remoteCert)
 	if err == nil {
-		return false //cert is still valid! yay!
-	} else if err == cert.ErrBlockListed { //avoiding errors.Is for speed
-		// Block listed certificates should always be disconnected
-		hostinfo.logger(cm.l).Info("Remote certificate is blocked, tearing down the tunnel",
-			"error", err,
-			"fingerprint", remoteCert.Fingerprint,
-		)
-		return true
-	} else if cm.intf.disconnectInvalid.Load() {
-		hostinfo.logger(cm.l).Info("Remote certificate is no longer valid, tearing down the tunnel",
-			"error", err,
-			"fingerprint", remoteCert.Fingerprint,
-		)
-		return true
-	} else {
-		//if we reach here, the cert is no longer valid, but we're configured to keep tunnels from now-invalid certs open
 		return false
 	}
+
+	if !cm.intf.disconnectInvalid.Load() && err != cert.ErrBlockListed {
+		// Block listed certificates should always be disconnected
+		return false
+	}
+
+	hostinfo.logger(cm.l).WithError(err).
+		WithField("fingerprint", remoteCert.Fingerprint).
+		Info("Remote certificate is no longer valid, tearing down the tunnel")
+
+	return true
+}
+
+func (cm *connectionManager) sendPunch(hostinfo *HostInfo) {
+	if !cm.punchy.GetPunch() {
+		// Punching is disabled
+		return
+	}
+
+	if cm.intf.lightHouse.IsAnyLighthouseAddr(hostinfo.vpnAddrs) {
+		// Do not punch to lighthouses, we assume our lighthouse update interval is good enough.
+		// In the event the update interval is not sufficient to maintain NAT state then a publicly available lighthouse
+		// would lose the ability to notify us and punchy.respond would become unreliable.
+		return
+	}
+
+	if cm.punchy.GetTargetEverything() {
+		hostinfo.remotes.ForEach(cm.hostMap.GetPreferredRanges(), func(addr netip.AddrPort, preferred bool) {
+			cm.metricsTxPunchy.Inc(1)
+			cm.intf.outside.WriteTo([]byte{1}, addr)
+		})
+
+	} else if hostinfo.remote.IsValid() {
+		cm.metricsTxPunchy.Inc(1)
+		cm.intf.outside.WriteTo([]byte{1}, hostinfo.remote)
+	}
 }
 
 func (cm *connectionManager) tryRehandshake(hostinfo *HostInfo) {
 	cs := cm.intf.pki.getCertState()
 	curCrt := hostinfo.ConnectionState.myCert
-	curCrtVersion := curCrt.Version()
-	myCrt := cs.getCertificate(curCrtVersion)
-	if myCrt == nil {
-		cm.l.Info("Re-handshaking with remote",
-			"vpnAddrs", hostinfo.vpnAddrs,
-			"version", curCrtVersion,
-			"reason", "local certificate removed",
-		)
-		cm.intf.handshakeManager.StartHandshake(hostinfo.vpnAddrs[0], nil)
+	myCrt := cs.getCertificate(curCrt.Version())
+	if curCrt.Version() >= cs.initiatingVersion && bytes.Equal(curCrt.Signature(), myCrt.Signature()) == true {
+		// The current tunnel is using the latest certificate and version, no need to rehandshake.
 		return
 	}
-	peerCrt := hostinfo.ConnectionState.peerCert
-	if peerCrt != nil && curCrtVersion < peerCrt.Certificate.Version() {
-		// if our certificate version is less than theirs, and we have a matching version available, rehandshake?
-		if cs.getCertificate(peerCrt.Certificate.Version()) != nil {
-			cm.l.Info("Re-handshaking with remote",
-				"vpnAddrs", hostinfo.vpnAddrs,
-				"version", curCrtVersion,
-				"peerVersion", peerCrt.Certificate.Version(),
-				"reason", "local certificate version lower than peer, attempting to correct",
-			)
-			cm.intf.handshakeManager.StartHandshake(hostinfo.vpnAddrs[0], func(hh *HandshakeHostInfo) {
-				hh.initiatingVersionOverride = peerCrt.Certificate.Version()
-			})
-			return
-		}
-	}
-	if !bytes.Equal(curCrt.Signature(), myCrt.Signature()) {
-		cm.l.Info("Re-handshaking with remote",
-			"vpnAddrs", hostinfo.vpnAddrs,
-			"reason", "local certificate is not current",
-		)
 
-		cm.intf.handshakeManager.StartHandshake(hostinfo.vpnAddrs[0], nil)
-		return
-	}
-	if curCrtVersion < cs.initiatingVersion {
-		cm.l.Info("Re-handshaking with remote",
-			"vpnAddrs", hostinfo.vpnAddrs,
-			"reason", "current cert version < pki.initiatingVersion",
-		)
+	cm.l.WithField("vpnAddrs", hostinfo.vpnAddrs).
+		WithField("reason", "local certificate is not current").
+		Info("Re-handshaking with remote")
 
-		cm.intf.handshakeManager.StartHandshake(hostinfo.vpnAddrs[0], nil)
-		return
-	}
+	cm.intf.handshakeManager.StartHandshake(hostinfo.vpnAddrs[0], nil)
 }

connection_manager_test.go

@@ -7,9 +7,9 @@ import (
 	"testing"
 	"time"
 
+	"github.com/flynn/noise"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/config"
-	"github.com/slackhq/nebula/overlay/overlaytest"
 	"github.com/slackhq/nebula/test"
 	"github.com/slackhq/nebula/udp"
 	"github.com/stretchr/testify/assert"
@@ -46,13 +46,13 @@ func Test_NewConnectionManagerTest(t *testing.T) {
 		initiatingVersion: cert.Version1,
 		privateKey:        []byte{},
 		v1Cert:            &dummyCert{version: cert.Version1},
-		v1Credential:      nil,
+		v1HandshakeBytes:  []byte{},
 	}
 
 	lh := newTestLighthouse()
 	ifce := &Interface{
 		hostMap:          hostMap,
-		inside:           &overlaytest.NoopTun{},
+		inside:           &test.NoopTun{},
 		outside:          &udp.NoopConn{},
 		firewall:         &Firewall{},
 		lightHouse:       lh,
@@ -63,9 +63,9 @@ func Test_NewConnectionManagerTest(t *testing.T) {
 	ifce.pki.cs.Store(cs)
 
 	// Create manager
-	conf := config.NewC(test.NewLogger())
-	punchy := NewPunchyFromConfig(test.NewLogger(), conf, nil)
-	nc := newConnectionManagerFromConfig(test.NewLogger(), conf, hostMap, punchy)
+	conf := config.NewC(l)
+	punchy := NewPunchyFromConfig(l, conf)
+	nc := newConnectionManagerFromConfig(l, conf, hostMap, punchy)
 	nc.intf = ifce
 	p := []byte("")
 	nb := make([]byte, 12, 12)
@@ -79,6 +79,7 @@ func Test_NewConnectionManagerTest(t *testing.T) {
 	}
 	hostinfo.ConnectionState = &ConnectionState{
 		myCert: &dummyCert{version: cert.Version1},
+		H:      &noise.HandshakeState{},
 	}
 	nc.hostMap.unlockedAddHostInfo(hostinfo, ifce)
 
@@ -128,13 +129,13 @@ func Test_NewConnectionManagerTest2(t *testing.T) {
 		initiatingVersion: cert.Version1,
 		privateKey:        []byte{},
 		v1Cert:            &dummyCert{version: cert.Version1},
-		v1Credential:      nil,
+		v1HandshakeBytes:  []byte{},
 	}
 
 	lh := newTestLighthouse()
 	ifce := &Interface{
 		hostMap:          hostMap,
-		inside:           &overlaytest.NoopTun{},
+		inside:           &test.NoopTun{},
 		outside:          &udp.NoopConn{},
 		firewall:         &Firewall{},
 		lightHouse:       lh,
@@ -145,9 +146,9 @@ func Test_NewConnectionManagerTest2(t *testing.T) {
 	ifce.pki.cs.Store(cs)
 
 	// Create manager
-	conf := config.NewC(test.NewLogger())
-	punchy := NewPunchyFromConfig(test.NewLogger(), conf, nil)
-	nc := newConnectionManagerFromConfig(test.NewLogger(), conf, hostMap, punchy)
+	conf := config.NewC(l)
+	punchy := NewPunchyFromConfig(l, conf)
+	nc := newConnectionManagerFromConfig(l, conf, hostMap, punchy)
 	nc.intf = ifce
 	p := []byte("")
 	nb := make([]byte, 12, 12)
@@ -161,6 +162,7 @@ func Test_NewConnectionManagerTest2(t *testing.T) {
 	}
 	hostinfo.ConnectionState = &ConnectionState{
 		myCert: &dummyCert{version: cert.Version1},
+		H:      &noise.HandshakeState{},
 	}
 	nc.hostMap.unlockedAddHostInfo(hostinfo, ifce)
 
@@ -212,13 +214,13 @@ func Test_NewConnectionManager_DisconnectInactive(t *testing.T) {
 		initiatingVersion: cert.Version1,
 		privateKey:        []byte{},
 		v1Cert:            &dummyCert{version: cert.Version1},
-		v1Credential:      nil,
+		v1HandshakeBytes:  []byte{},
 	}
 
 	lh := newTestLighthouse()
 	ifce := &Interface{
 		hostMap:          hostMap,
-		inside:           &overlaytest.NoopTun{},
+		inside:           &test.NoopTun{},
 		outside:          &udp.NoopConn{},
 		firewall:         &Firewall{},
 		lightHouse:       lh,
@@ -229,12 +231,12 @@ func Test_NewConnectionManager_DisconnectInactive(t *testing.T) {
 	ifce.pki.cs.Store(cs)
 
 	// Create manager
-	conf := config.NewC(test.NewLogger())
+	conf := config.NewC(l)
 	conf.Settings["tunnels"] = map[string]any{
 		"drop_inactive": true,
 	}
-	punchy := NewPunchyFromConfig(test.NewLogger(), conf, nil)
-	nc := newConnectionManagerFromConfig(test.NewLogger(), conf, hostMap, punchy)
+	punchy := NewPunchyFromConfig(l, conf)
+	nc := newConnectionManagerFromConfig(l, conf, hostMap, punchy)
 	assert.True(t, nc.dropInactive.Load())
 	nc.intf = ifce
 
@@ -246,6 +248,7 @@ func Test_NewConnectionManager_DisconnectInactive(t *testing.T) {
 	}
 	hostinfo.ConnectionState = &ConnectionState{
 		myCert: &dummyCert{version: cert.Version1},
+		H:      &noise.HandshakeState{},
 	}
 	nc.hostMap.unlockedAddHostInfo(hostinfo, ifce)
 
@@ -336,15 +339,15 @@ func Test_NewConnectionManagerTest_DisconnectInvalid(t *testing.T) {
 	cachedPeerCert, err := ncp.VerifyCertificate(now.Add(time.Second), peerCert)
 
 	cs := &CertState{
-		privateKey:   []byte{},
-		v1Cert:       &dummyCert{},
-		v1Credential: nil,
+		privateKey:       []byte{},
+		v1Cert:           &dummyCert{},
+		v1HandshakeBytes: []byte{},
 	}
 
 	lh := newTestLighthouse()
 	ifce := &Interface{
 		hostMap:          hostMap,
-		inside:           &overlaytest.NoopTun{},
+		inside:           &test.NoopTun{},
 		outside:          &udp.NoopConn{},
 		firewall:         &Firewall{},
 		lightHouse:       lh,
@@ -357,9 +360,9 @@ func Test_NewConnectionManagerTest_DisconnectInvalid(t *testing.T) {
 	ifce.disconnectInvalid.Store(true)
 
 	// Create manager
-	conf := config.NewC(test.NewLogger())
-	punchy := NewPunchyFromConfig(test.NewLogger(), conf, nil)
-	nc := newConnectionManagerFromConfig(test.NewLogger(), conf, hostMap, punchy)
+	conf := config.NewC(l)
+	punchy := NewPunchyFromConfig(l, conf)
+	nc := newConnectionManagerFromConfig(l, conf, hostMap, punchy)
 	nc.intf = ifce
 	ifce.connectionManager = nc
 
@@ -368,6 +371,7 @@ func Test_NewConnectionManagerTest_DisconnectInvalid(t *testing.T) {
 		ConnectionState: &ConnectionState{
 			myCert:   &dummyCert{},
 			peerCert: cachedPeerCert,
+			H:        &noise.HandshakeState{},
 		},
 	}
 	nc.hostMap.unlockedAddHostInfo(hostinfo, ifce)

connection_state.go

@@ -1,20 +1,24 @@
 package nebula
 
 import (
+	"crypto/rand"
 	"encoding/json"
+	"fmt"
 	"sync"
 	"sync/atomic"
 
+	"github.com/flynn/noise"
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/handshake"
 	"github.com/slackhq/nebula/noiseutil"
 )
 
 const ReplayWindow = 1024
 
 type ConnectionState struct {
-	eKey           noiseutil.CipherState
-	dKey           noiseutil.CipherState
+	eKey           *NebulaCipherState
+	dKey           *NebulaCipherState
+	H              *noise.HandshakeState
 	myCert         cert.Certificate
 	peerCert       *cert.CachedCertificate
 	initiator      bool
@@ -23,24 +27,60 @@ type ConnectionState struct {
 	writeLock      sync.Mutex
 }
 
-// newConnectionStateFromResult builds a fully-populated ConnectionState from a
-// completed handshake.Result. It seeds messageCounter and the replay window so
-// that the post-handshake message indices already used on the wire don't count
-// as missed traffic in the data plane.
-func newConnectionStateFromResult(r *handshake.Result) *ConnectionState {
+func NewConnectionState(l *logrus.Logger, cs *CertState, crt cert.Certificate, initiator bool, pattern noise.HandshakePattern) (*ConnectionState, error) {
+	var dhFunc noise.DHFunc
+	switch crt.Curve() {
+	case cert.Curve_CURVE25519:
+		dhFunc = noise.DH25519
+	case cert.Curve_P256:
+		if cs.pkcs11Backed {
+			dhFunc = noiseutil.DHP256PKCS11
+		} else {
+			dhFunc = noiseutil.DHP256
+		}
+	default:
+		return nil, fmt.Errorf("invalid curve: %s", crt.Curve())
+	}
+
+	var ncs noise.CipherSuite
+	if cs.cipher == "chachapoly" {
+		ncs = noise.NewCipherSuite(dhFunc, noise.CipherChaChaPoly, noise.HashSHA256)
+	} else {
+		ncs = noise.NewCipherSuite(dhFunc, noiseutil.CipherAESGCM, noise.HashSHA256)
+	}
+
+	static := noise.DHKey{Private: cs.privateKey, Public: crt.PublicKey()}
+
+	b := NewBits(ReplayWindow)
+	// Clear out bit 0, we never transmit it, and we don't want it showing as packet loss
+	b.Update(l, 0)
+
+	hs, err := noise.NewHandshakeState(noise.Config{
+		CipherSuite:   ncs,
+		Random:        rand.Reader,
+		Pattern:       pattern,
+		Initiator:     initiator,
+		StaticKeypair: static,
+		//NOTE: These should come from CertState (pki.go) when we finally implement it
+		PresharedKey:          []byte{},
+		PresharedKeyPlacement: 0,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("NewConnectionState: %s", err)
+	}
+
+	// The queue and ready params prevent a counter race that would happen when
+	// sending stored packets and simultaneously accepting new traffic.
 	ci := &ConnectionState{
-		myCert:    r.MyCert,
-		initiator: r.Initiator,
-		peerCert:  r.RemoteCert,
-		eKey:      noiseutil.NewCipherState(r.EKey, r.Cipher),
-		dKey:      noiseutil.NewCipherState(r.DKey, r.Cipher),
-		window:    NewBits(ReplayWindow),
+		H:         hs,
+		initiator: initiator,
+		window:    b,
+		myCert:    crt,
 	}
-	ci.messageCounter.Add(r.MessageIndex)
-	for i := uint64(1); i <= r.MessageIndex; i++ {
-		ci.window.Update(nil, i)
-	}
-	return ci
+	// always start the counter from 2, as packet 1 and packet 2 are handshake packets.
+	ci.messageCounter.Add(2)
+
+	return ci, nil
 }
 
 func (cs *ConnectionState) MarshalJSON() ([]byte, error) {

connection_state_test.go

@@ -1,114 +0,0 @@
-package nebula
-
-import (
-	"net/netip"
-	"testing"
-	"time"
-
-	"github.com/flynn/noise"
-	"github.com/slackhq/nebula/cert"
-	ct "github.com/slackhq/nebula/cert_test"
-	"github.com/slackhq/nebula/handshake"
-	"github.com/slackhq/nebula/header"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-// runTestHandshake runs a complete IX handshake between two freshly-built
-// peers and returns the initiator and responder Results. Used to produce
-// real cipher states for tests that need to exercise post-handshake glue.
-func runTestHandshake(t *testing.T) (initR, respR *handshake.Result) {
-	t.Helper()
-
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-
-	makeCreds := func(name string, networks []netip.Prefix) handshake.GetCredentialFunc {
-		c, _, rawKey, _ := ct.NewTestCert(
-			cert.Version2, cert.Curve_CURVE25519, ca, caKey,
-			name, ca.NotBefore(), ca.NotAfter(), networks, nil, nil,
-		)
-		priv, _, _, err := cert.UnmarshalPrivateKeyFromPEM(rawKey)
-		require.NoError(t, err)
-		hsBytes, err := c.MarshalForHandshakes()
-		require.NoError(t, err)
-		ncs := noise.NewCipherSuite(noise.DH25519, noise.CipherChaChaPoly, noise.HashSHA256)
-		cred := handshake.NewCredential(c, hsBytes, priv, ncs)
-		return func(v cert.Version) *handshake.Credential {
-			if v == cert.Version2 {
-				return cred
-			}
-			return nil
-		}
-	}
-
-	verifier := func(c cert.Certificate) (*cert.CachedCertificate, error) {
-		return caPool.VerifyCertificate(time.Now(), c)
-	}
-
-	initCreds := makeCreds("initiator", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	respCreds := makeCreds("responder", []netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")})
-
-	initM, err := handshake.NewMachine(
-		cert.Version2, initCreds, verifier,
-		func() (uint32, error) { return 1000, nil },
-		true, header.HandshakeIXPSK0,
-	)
-	require.NoError(t, err)
-
-	respM, err := handshake.NewMachine(
-		cert.Version2, respCreds, verifier,
-		func() (uint32, error) { return 2000, nil },
-		false, header.HandshakeIXPSK0,
-	)
-	require.NoError(t, err)
-
-	msg1, err := initM.Initiate(nil)
-	require.NoError(t, err)
-
-	resp, respR, err := respM.ProcessPacket(nil, msg1)
-	require.NoError(t, err)
-	require.NotNil(t, respR)
-
-	_, initR, err = initM.ProcessPacket(nil, resp)
-	require.NoError(t, err)
-	require.NotNil(t, initR)
-
-	return initR, respR
-}
-
-func TestNewConnectionStateFromResult(t *testing.T) {
-	initR, respR := runTestHandshake(t)
-
-	t.Run("initiator", func(t *testing.T) {
-		ci := newConnectionStateFromResult(initR)
-		assert.True(t, ci.initiator)
-		assert.Equal(t, initR.MyCert, ci.myCert)
-		assert.Equal(t, initR.RemoteCert, ci.peerCert)
-		assert.NotNil(t, ci.eKey)
-		assert.NotNil(t, ci.dKey)
-
-		// IX has 2 handshake messages; the next data-plane send is counter=3.
-		assert.Equal(t, uint64(2), ci.messageCounter.Load(),
-			"messageCounter must equal Result.MessageIndex so the next send is N+1")
-
-		// Both handshake counters must be marked seen so they don't appear lost.
-		// Check returns false if an index has already been recorded.
-		assert.False(t, ci.window.Check(nil, 1), "counter 1 must already be seen")
-		assert.False(t, ci.window.Check(nil, 2), "counter 2 must already be seen")
-		// Counter 3 is the next data-plane message and must NOT be pre-marked.
-		assert.True(t, ci.window.Check(nil, 3), "counter 3 must not be pre-seeded")
-	})
-
-	t.Run("responder", func(t *testing.T) {
-		ci := newConnectionStateFromResult(respR)
-		assert.False(t, ci.initiator)
-		assert.Equal(t, respR.MyCert, ci.myCert)
-		assert.Equal(t, respR.RemoteCert, ci.peerCert)
-		assert.NotNil(t, ci.eKey)
-		assert.NotNil(t, ci.dKey)
-		assert.Equal(t, uint64(2), ci.messageCounter.Load())
-	})
-}

control.go

@@ -2,33 +2,17 @@ package nebula
 
 import (
 	"context"
-	"errors"
-	"log/slog"
 	"net/netip"
 	"os"
 	"os/signal"
-	"sync"
 	"syscall"
 
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/header"
 	"github.com/slackhq/nebula/overlay"
 )
 
-type RunState int
-
-const (
-	StateUnknown RunState = iota
-	StateReady
-	StateStarted
-	StateStopping
-	StateStopped
-)
-
-var ErrAlreadyStarted = errors.New("nebula is already started")
-var ErrAlreadyStopped = errors.New("nebula cannot be restarted")
-var ErrUnknownState = errors.New("nebula state is invalid")
-
 // Every interaction here needs to take extra care to copy memory and not return or use arguments "as is" when touching
 // core. This means copying IP objects, slices, de-referencing pointers and taking the actual value, etc
 
@@ -42,11 +26,8 @@ type controlHostLister interface {
 }
 
 type Control struct {
-	stateLock sync.Mutex
-	state     RunState
-
 	f                      *Interface
-	l                      *slog.Logger
+	l                      *logrus.Logger
 	ctx                    context.Context
 	cancel                 context.CancelFunc
 	sshStart               func()
@@ -68,31 +49,10 @@ type ControlHostInfo struct {
 	CurrentRelaysThroughMe []netip.Addr     `json:"currentRelaysThroughMe"`
 }
 
-// Start actually runs nebula, this is a nonblocking call.
-// The returned function blocks until nebula has fully stopped and returns the
-// first fatal reader error (if any). A nil error means nebula shut down
-// gracefully; a non-nil error means a reader hit an unexpected failure that
-// triggered the shutdown.
-func (c *Control) Start() (func() error, error) {
-	c.stateLock.Lock()
-	defer c.stateLock.Unlock()
-	switch c.state {
-	case StateReady:
-		//yay!
-	case StateStopped, StateStopping:
-		return nil, ErrAlreadyStopped
-	case StateStarted:
-		return nil, ErrAlreadyStarted
-	default:
-		return nil, ErrUnknownState
-	}
-
+// Start actually runs nebula, this is a nonblocking call. To block use Control.ShutdownBlock()
+func (c *Control) Start() {
 	// Activate the interface
-	err := c.f.activate()
-	if err != nil {
-		c.state = StateStopped
-		return nil, err
-	}
+	c.f.activate()
 
 	// Call all the delayed funcs that waited patiently for the interface to be created.
 	if c.sshStart != nil {
@@ -111,51 +71,25 @@ func (c *Control) Start() (func() error, error) {
 		c.lighthouseStart()
 	}
 
-	c.f.triggerShutdown = c.Stop
-
 	// Start reading packets.
-	out, err := c.f.run()
-	if err != nil {
-		c.state = StateStopped
-		return nil, err
-	}
-	c.state = StateStarted
-	return out, nil
-}
-
-func (c *Control) State() RunState {
-	c.stateLock.Lock()
-	defer c.stateLock.Unlock()
-	return c.state
+	c.f.run()
 }
 
 func (c *Control) Context() context.Context {
 	return c.ctx
 }
 
-// Stop is a non-blocking call that signals nebula to close all tunnels and shut down
+// Stop signals nebula to shutdown and close all tunnels, returns after the shutdown is complete
 func (c *Control) Stop() {
-	c.stateLock.Lock()
-	if c.state != StateStarted {
-		c.stateLock.Unlock()
-		// We are stopping or stopped already
-		return
-	}
-
-	c.state = StateStopping
-	c.stateLock.Unlock()
-
 	// Stop the handshakeManager (and other services), to prevent new tunnels from
 	// being created while we're shutting them all down.
 	c.cancel()
 
 	c.CloseAllTunnels(false)
 	if err := c.f.Close(); err != nil {
-		c.l.Error("Close interface failed", "error", err)
+		c.l.WithError(err).Error("Close interface failed")
 	}
-	c.stateLock.Lock()
-	c.state = StateStopped
-	c.stateLock.Unlock()
+	c.l.Info("Goodbye")
 }
 
 // ShutdownBlock will listen for and block on term and interrupt signals, calling Control.Stop() once signalled
@@ -166,7 +100,7 @@ func (c *Control) ShutdownBlock() {
 
 	rawSig := <-sigChan
 	sig := rawSig.String()
-	c.l.Info("Caught signal, shutting down", "signal", sig)
+	c.l.WithField("signal", sig).Info("Caught signal, shutting down")
 	c.Stop()
 }
 
@@ -303,10 +237,8 @@ func (c *Control) CloseAllTunnels(excludeLighthouses bool) (closed int) {
 		c.f.send(header.CloseTunnel, 0, h.ConnectionState, h, []byte{}, make([]byte, 12, 12), make([]byte, mtu))
 		c.f.closeTunnel(h)
 
-		c.l.Debug("Sending close tunnel message",
-			"vpnAddrs", h.vpnAddrs,
-			"udpAddr", h.remote,
-		)
+		c.l.WithField("vpnAddrs", h.vpnAddrs).WithField("udpAddr", h.remote).
+			Debug("Sending close tunnel message")
 		closed++
 	}
 

control_test.go

@@ -6,6 +6,7 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/test"
 	"github.com/stretchr/testify/assert"
@@ -78,11 +79,10 @@ func TestControl_GetHostInfoByVpnIp(t *testing.T) {
 	}, &Interface{})
 
 	c := Control{
-		state: StateReady,
 		f: &Interface{
 			hostMap: hm,
 		},
-		l: test.NewLogger(),
+		l: logrus.New(),
 	}
 
 	thi := c.GetHostInfoByVpnAddr(vpnIp, false)

control_tester.go

@@ -1,10 +1,13 @@
 //go:build e2e_testing
+// +build e2e_testing
 
 package nebula
 
 import (
 	"net/netip"
 
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
 	"github.com/slackhq/nebula/header"
 	"github.com/slackhq/nebula/overlay"
 	"github.com/slackhq/nebula/udp"
@@ -20,9 +23,7 @@ func (c *Control) WaitForType(msgType header.MessageType, subType header.Message
 			panic(err)
 		}
 		pipeTo.InjectUDPPacket(p)
-		match := h.Type == msgType && h.Subtype == subType
-		p.Release()
-		if match {
+		if h.Type == msgType && h.Subtype == subType {
 			return
 		}
 	}
@@ -38,9 +39,7 @@ func (c *Control) WaitForTypeByIndex(toIndex uint32, msgType header.MessageType,
 			panic(err)
 		}
 		pipeTo.InjectUDPPacket(p)
-		match := h.RemoteIndex == toIndex && h.Type == msgType && h.Subtype == subType
-		p.Release()
-		if match {
+		if h.RemoteIndex == toIndex && h.Type == msgType && h.Subtype == subType {
 			return
 		}
 	}
@@ -92,15 +91,65 @@ func (c *Control) GetTunTxChan() <-chan []byte {
 	return c.f.inside.(*overlay.TestTun).TxPackets
 }
 
-// InjectUDPPacket injects a packet into the udp side. We copy internally so the caller keeps ownership of p.
-// The copy comes from the freelist so steady-state alloc is zero.
+// InjectUDPPacket will inject a packet into the udp side of nebula
 func (c *Control) InjectUDPPacket(p *udp.Packet) {
-	c.f.outside.(*udp.TesterConn).Send(p.Copy())
+	c.f.outside.(*udp.TesterConn).Send(p)
 }
 
-// InjectTunPacket pushes an IP packet onto the tun interface.
-func (c *Control) InjectTunPacket(packet []byte) {
-	c.f.inside.(*overlay.TestTun).Send(packet)
+// InjectTunUDPPacket puts a udp packet on the tun interface. Using UDP here because it's a simpler protocol
+func (c *Control) InjectTunUDPPacket(toAddr netip.Addr, toPort uint16, fromAddr netip.Addr, fromPort uint16, data []byte) {
+	serialize := make([]gopacket.SerializableLayer, 0)
+	var netLayer gopacket.NetworkLayer
+	if toAddr.Is6() {
+		if !fromAddr.Is6() {
+			panic("Cant send ipv6 to ipv4")
+		}
+		ip := &layers.IPv6{
+			Version:    6,
+			NextHeader: layers.IPProtocolUDP,
+			SrcIP:      fromAddr.Unmap().AsSlice(),
+			DstIP:      toAddr.Unmap().AsSlice(),
+		}
+		serialize = append(serialize, ip)
+		netLayer = ip
+	} else {
+		if !fromAddr.Is4() {
+			panic("Cant send ipv4 to ipv6")
+		}
+
+		ip := &layers.IPv4{
+			Version:  4,
+			TTL:      64,
+			Protocol: layers.IPProtocolUDP,
+			SrcIP:    fromAddr.Unmap().AsSlice(),
+			DstIP:    toAddr.Unmap().AsSlice(),
+		}
+		serialize = append(serialize, ip)
+		netLayer = ip
+	}
+
+	udp := layers.UDP{
+		SrcPort: layers.UDPPort(fromPort),
+		DstPort: layers.UDPPort(toPort),
+	}
+	err := udp.SetNetworkLayerForChecksum(netLayer)
+	if err != nil {
+		panic(err)
+	}
+
+	buffer := gopacket.NewSerializeBuffer()
+	opt := gopacket.SerializeOptions{
+		ComputeChecksums: true,
+		FixLengths:       true,
+	}
+
+	serialize = append(serialize, &udp, gopacket.Payload(data))
+	err = gopacket.SerializeLayers(buffer, opt, serialize...)
+	if err != nil {
+		panic(err)
+	}
+
+	c.f.inside.(*overlay.TestTun).Send(buffer.Bytes())
 }
 
 func (c *Control) GetVpnAddrs() []netip.Addr {
@@ -125,10 +174,6 @@ func (c *Control) GetHostmap() *HostMap {
 	return c.f.hostMap
 }
 
-func (c *Control) GetF() *Interface {
-	return c.f
-}
-
 func (c *Control) GetCertState() *CertState {
 	return c.f.pki.getCertState()
 }

dist/wireshark/nebula.lua

@@ -62,7 +62,7 @@ function nebula.dissector(tvbuf, pktinfo, root)
     tree:add(pf_version, tvbuf:range(0,1))
     local type = tree:add(pf_type,    tvbuf:range(0,1))
 
-    local nebula_type = bit.band(tvbuf:range(0,1):uint(), 0x0F)
+    local nebula_type = bit32.band(tvbuf:range(0,1):uint(), 0x0F)
     if nebula_type == 0 then
         local stage = tvbuf(8,8):uint64()
         tree:add(pf_subtype_handshake, tvbuf:range(1,1))
@@ -84,24 +84,30 @@ end
 
 function nebula.prefs_changed()
     if default_settings.all_ports == nebula.prefs.all_ports and default_settings.port == nebula.prefs.port then
+        -- Nothing changed, bail
         return
     end
 
-    -- Remove all existing registrations
+    -- Remove our old dissector
     DissectorTable.get("udp.port"):remove_all(nebula)
 
-    if nebula.prefs.all_ports then
-        -- Register on every port for hole punch capture
+    if nebula.prefs.all_ports and default_settings.all_ports ~= nebula.prefs.all_ports then
+        default_settings.all_port = nebula.prefs.all_ports
+
         for i=0, 65535 do
             DissectorTable.get("udp.port"):add(i, nebula)
         end
-    else
-        -- Register on the configured port only
-        DissectorTable.get("udp.port"):add(nebula.prefs.port, nebula)
+
+        -- no need to establish again on specific ports
+        return
     end
 
-    default_settings.all_ports = nebula.prefs.all_ports
-    default_settings.port = nebula.prefs.port
+
+    if default_settings.all_ports ~= nebula.prefs.all_ports then
+        -- Add our new port dissector
+        default_settings.port = nebula.prefs.port
+        DissectorTable.get("udp.port"):add(default_settings.port, nebula)
+    end
 end
 
 DissectorTable.get("udp.port"):add(default_settings.port, nebula)

dns_server.go

@@ -1,268 +1,68 @@
 package nebula
 
 import (
-	"context"
 	"fmt"
-	"log/slog"
 	"net"
 	"net/netip"
 	"strconv"
 	"strings"
 	"sync"
-	"sync/atomic"
 
+	"github.com/gaissmai/bart"
 	"github.com/miekg/dns"
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/config"
 )
 
-type dnsServer struct {
+// This whole thing should be rewritten to use context
+
+var dnsR *dnsRecords
+var dnsServer *dns.Server
+var dnsAddr string
+
+type dnsRecords struct {
 	sync.RWMutex
-	l       *slog.Logger
-	ctx     context.Context
-	dnsMap4 map[string]netip.Addr
-	dnsMap6 map[string]netip.Addr
-	hostMap *HostMap
-	pki     *PKI
-
-	// selfHost is the cached FQDN we last seeded for ourselves
-	selfHost string
-
-	mux *dns.ServeMux
-
-	// enabled mirrors `lighthouse.serve_dns && lighthouse.am_lighthouse`.
-	// Start, Add, and reload consult it so callers don't need to know the
-	// gating rules. When it toggles off via reload, accumulated records are
-	// cleared so a later re-enable starts with a fresh map populated from
-	// new handshakes.
-	enabled atomic.Bool
-
-	serverMu sync.Mutex
-	server   *dns.Server
-	// started is closed once `server` has finished binding (or after
-	// ListenAndServe returns on a bind failure). Stop waits on it before
-	// calling Shutdown to avoid the miekg/dns "server not started" race
-	// where a Shutdown that arrives before bind completes is silently
-	// ignored, leaving the listener running forever.
-	started chan struct{}
-	addr    string
+	l               *logrus.Logger
+	dnsMap4         map[string]netip.Addr
+	dnsMap6         map[string]netip.Addr
+	hostMap         *HostMap
+	myVpnAddrsTable *bart.Lite
 }
 
-// newDnsServerFromConfig builds a dnsServer, applies the initial config, and
-// registers a reload callback. The reload callback is registered before the
-// initial config is applied, so a SIGHUP can later enable, fix, or disable
-// DNS even if the initial application failed.
-//
-// The dnsServer internally gates on `lighthouse.serve_dns &&
-// lighthouse.am_lighthouse`. Start and Add are safe to call unconditionally,
-// they no-op when DNS isn't enabled. Each Start invocation owns a ctx-cancel
-// watcher that tears the listener down on nebula shutdown. The returned
-// pointer is always non-nil, even on error.
-func newDnsServerFromConfig(ctx context.Context, l *slog.Logger, pki *PKI, hostMap *HostMap, c *config.C) (*dnsServer, error) {
-	ds := &dnsServer{
-		l:       l,
-		ctx:     ctx,
-		dnsMap4: make(map[string]netip.Addr),
-		dnsMap6: make(map[string]netip.Addr),
-		hostMap: hostMap,
-		pki:     pki,
-	}
-	ds.mux = dns.NewServeMux()
-	ds.mux.HandleFunc(".", ds.handleDnsRequest)
-
-	c.RegisterReloadCallback(func(c *config.C) {
-		if err := ds.reload(c, false); err != nil {
-			ds.l.Error("Failed to reload DNS responder from config", "error", err)
-		}
-	})
-
-	if err := ds.reload(c, true); err != nil {
-		return ds, err
-	}
-	ds.seedSelf()
-	return ds, nil
-}
-
-// reload applies the latest config and reconciles the running state with it:
-//   - enabled toggled on  -> spawn a runner
-//   - enabled toggled off -> stop the runner
-//   - listen address changed (while running) -> restart on the new address
-//   - everything else     -> no-op
-//
-// On the initial call it only records configuration; Control.Start is what
-// launches the first runner via dnsStart.
-func (d *dnsServer) reload(c *config.C, initial bool) error {
-	wantsDns := c.GetBool("lighthouse.serve_dns", false)
-	amLighthouse := c.GetBool("lighthouse.am_lighthouse", false)
-	enabled := wantsDns && amLighthouse
-	newAddr := getDnsServerAddr(c)
-
-	d.serverMu.Lock()
-	running := d.server
-	runningStarted := d.started
-	sameAddr := d.addr == newAddr
-	d.addr = newAddr
-	d.enabled.Store(enabled)
-	d.serverMu.Unlock()
-
-	if initial {
-		if wantsDns && !amLighthouse {
-			d.l.Warn("DNS server refusing to run because this host is not a lighthouse.")
-		}
-		return nil
-	}
-
-	if !enabled {
-		if running != nil {
-			d.Stop()
-		}
-		// Drop any records that accumulated while enabled; a later re-enable
-		// will repopulate from fresh handshakes and a fresh seedSelf.
-		d.clearRecords()
-		return nil
-	}
-
-	if running == nil {
-		// Was disabled (or never started); bring it up now.
-		go d.Start()
-	} else if !sameAddr {
-		d.shutdownServer(running, runningStarted, "reload")
-		// Old Start goroutine has now exited; bring up a fresh listener on the new address.
-		go d.Start()
-	}
-
-	// Refresh the self entry every enabled reload so cert renewals that change our name or VPN addresses are picked up.
-	d.seedSelf()
-	return nil
-}
-
-// shutdownServer waits for the server to finish binding (so Shutdown actually
-// stops it rather than no-oping) and then shuts it down.
-func (d *dnsServer) shutdownServer(srv *dns.Server, started chan struct{}, reason string) {
-	if srv == nil {
-		return
-	}
-	if started != nil {
-		<-started
-	}
-	if err := srv.Shutdown(); err != nil {
-		d.l.Warn("Failed to shut down the DNS responder", "reason", reason, "error", err)
+func newDnsRecords(l *logrus.Logger, cs *CertState, hostMap *HostMap) *dnsRecords {
+	return &dnsRecords{
+		l:               l,
+		dnsMap4:         make(map[string]netip.Addr),
+		dnsMap6:         make(map[string]netip.Addr),
+		hostMap:         hostMap,
+		myVpnAddrsTable: cs.myVpnAddrsTable,
 	}
 }
 
-// Start binds and serves the DNS responder. Blocks until Stop is called or
-// the listener errors. Safe to call when DNS is disabled (returns
-// immediately). This is what Control.dnsStart points at.
-//
-// Must be invoked after the tun device is active so that lighthouse.dns.host
-// may bind to a nebula IP.
-func (d *dnsServer) Start() {
-	if !d.enabled.Load() {
-		return
-	}
-
-	started := make(chan struct{})
-	d.serverMu.Lock()
-	if d.ctx.Err() != nil {
-		d.serverMu.Unlock()
-		return
-	}
-	addr := d.addr
-	server := &dns.Server{
-		Addr:              addr,
-		Net:               "udp",
-		Handler:           d.mux,
-		NotifyStartedFunc: func() { close(started) },
-	}
-	d.server = server
-	d.started = started
-	d.serverMu.Unlock()
-
-	// Per-invocation ctx watcher. Exits when Start does, so we don't leak a
-	// watcher per reload-driven restart.
-	done := make(chan struct{})
-	go func() {
-		select {
-		case <-d.ctx.Done():
-			d.shutdownServer(server, started, "shutdown")
-		case <-done:
-		}
-	}()
-
-	d.l.Info("Starting DNS responder", "dnsListener", addr)
-	err := server.ListenAndServe()
-	close(done)
-
-	// If the listener never bound (bind error) NotifyStartedFunc never fires,
-	// so close started here to release any Stop caller waiting on it.
-	select {
-	case <-started:
-	default:
-		close(started)
-	}
-
-	if err != nil {
-		d.l.Warn("Failed to run the DNS responder", "error", err)
-	}
-}
-
-// Stop shuts down the active server, if any. Idempotent.
-func (d *dnsServer) Stop() {
-	d.serverMu.Lock()
-	srv := d.server
-	started := d.started
-	d.server = nil
-	d.started = nil
-	d.serverMu.Unlock()
-	d.shutdownServer(srv, started, "stop")
-}
-
-// Query returns the address for the given name and query type. The second
-// return value reports whether the name is known at all (in either A or AAAA),
-// which lets callers distinguish NODATA from NXDOMAIN.
-func (d *dnsServer) Query(q uint16, data string) (netip.Addr, bool) {
+func (d *dnsRecords) Query(q uint16, data string) netip.Addr {
 	data = strings.ToLower(data)
 	d.RLock()
 	defer d.RUnlock()
-	addr4, haveV4 := d.dnsMap4[data]
-	addr6, haveV6 := d.dnsMap6[data]
-	nameExists := haveV4 || haveV6
 	switch q {
 	case dns.TypeA:
-		if haveV4 {
-			return addr4, nameExists
+		if r, ok := d.dnsMap4[data]; ok {
+			return r
 		}
 	case dns.TypeAAAA:
-		if haveV6 {
-			return addr6, nameExists
+		if r, ok := d.dnsMap6[data]; ok {
+			return r
 		}
 	}
 
-	return netip.Addr{}, nameExists
+	return netip.Addr{}
 }
 
-func (d *dnsServer) QueryCert(data string) string {
-	if len(data) < 2 {
-		return ""
-	}
+func (d *dnsRecords) QueryCert(data string) string {
 	ip, err := netip.ParseAddr(data[:len(data)-1])
 	if err != nil {
 		return ""
 	}
 
-	// The hostmap only ever contains peers we have handshaked with, so it never carries an entry for ourselves.
-	// Answer self lookups straight from the local cert state.
-	if cs := d.certState(); cs != nil && cs.myVpnAddrsTable != nil && cs.myVpnAddrsTable.Contains(ip) {
-		c := cs.GetDefaultCertificate()
-		if c == nil {
-			return ""
-		}
-		b, err := c.MarshalJSON()
-		if err != nil {
-			return ""
-		}
-		return string(b)
-	}
-
 	hostinfo := d.hostMap.QueryVpnAddr(ip)
 	if hostinfo == nil {
 		return ""
@@ -280,67 +80,8 @@ func (d *dnsServer) QueryCert(data string) string {
 	return string(b)
 }
 
-// clearRecords drops all DNS records, including the self entry.
-func (d *dnsServer) clearRecords() {
-	d.Lock()
-	defer d.Unlock()
-	clear(d.dnsMap4)
-	clear(d.dnsMap6)
-	d.selfHost = ""
-}
-
-// seedSelf inserts (or refreshes) a record for our own cert name pointing at our VPN addresses,
-// so a single-lighthouse network can resolve the lighthouse's own hostname without the two-process workaround.
-func (d *dnsServer) seedSelf() {
-	if !d.enabled.Load() {
-		return
-	}
-	cs := d.certState()
-	if cs == nil {
-		return
-	}
-	c := cs.GetDefaultCertificate()
-	if c == nil {
-		return
-	}
-	newHost := strings.ToLower(c.Name()) + "."
-
-	d.Lock()
-	defer d.Unlock()
-	if d.selfHost != "" && d.selfHost != newHost {
-		delete(d.dnsMap4, d.selfHost)
-		delete(d.dnsMap6, d.selfHost)
-	}
-	d.selfHost = newHost
-	delete(d.dnsMap4, newHost)
-	delete(d.dnsMap6, newHost)
-	haveV4, haveV6 := false, false
-	for _, addr := range cs.myVpnAddrs {
-		if addr.Is4() && !haveV4 {
-			d.dnsMap4[newHost] = addr
-			haveV4 = true
-		} else if addr.Is6() && !haveV6 {
-			d.dnsMap6[newHost] = addr
-			haveV6 = true
-		}
-		if haveV4 && haveV6 {
-			break
-		}
-	}
-}
-
-func (d *dnsServer) certState() *CertState {
-	if d.pki == nil {
-		return nil
-	}
-	return d.pki.getCertState()
-}
-
 // Add adds the first IPv4 and IPv6 address that appears in `addresses` as the record for `host`
-func (d *dnsServer) Add(host string, addresses []netip.Addr) {
-	if !d.enabled.Load() {
-		return
-	}
+func (d *dnsRecords) Add(host string, addresses []netip.Addr) {
 	host = strings.ToLower(host)
 	d.Lock()
 	defer d.Unlock()
@@ -360,7 +101,7 @@ func (d *dnsServer) Add(host string, addresses []netip.Addr) {
 	}
 }
 
-func (d *dnsServer) isSelfNebulaOrLocalhost(addr string) bool {
+func (d *dnsRecords) isSelfNebulaOrLocalhost(addr string) bool {
 	a, _, _ := net.SplitHostPort(addr)
 	b, err := netip.ParseAddr(a)
 	if err != nil {
@@ -371,32 +112,17 @@ func (d *dnsServer) isSelfNebulaOrLocalhost(addr string) bool {
 		return true
 	}
 
-	cs := d.certState()
-	if cs == nil || cs.myVpnAddrsTable == nil {
-		return false
-	}
 	//if we found it in this table, it's good
-	return cs.myVpnAddrsTable.Contains(b)
+	return d.myVpnAddrsTable.Contains(b)
 }
 
-func (d *dnsServer) parseQuery(m *dns.Msg, w dns.ResponseWriter) {
-	debugEnabled := d.l.Enabled(context.Background(), slog.LevelDebug)
-	// Per RFC 2308 §2.2, a name that exists but has no record of the requested
-	// type must be answered with NOERROR and an empty answer section (NODATA),
-	// not NXDOMAIN (RFC 2308 §2.1), which is reserved for names that do not
-	// exist at all.
-	anyNameExists := false
+func (d *dnsRecords) parseQuery(m *dns.Msg, w dns.ResponseWriter) {
 	for _, q := range m.Question {
 		switch q.Qtype {
 		case dns.TypeA, dns.TypeAAAA:
 			qType := dns.TypeToString[q.Qtype]
-			if debugEnabled {
-				d.l.Debug("DNS query", "type", qType, "name", q.Name)
-			}
-			ip, nameExists := d.Query(q.Qtype, q.Name)
-			if nameExists {
-				anyNameExists = true
-			}
+			d.l.Debugf("Query for %s %s", qType, q.Name)
+			ip := d.Query(q.Qtype, q.Name)
 			if ip.IsValid() {
 				rr, err := dns.NewRR(fmt.Sprintf("%s %s %s", q.Name, qType, ip))
 				if err == nil {
@@ -408,9 +134,7 @@ func (d *dnsServer) parseQuery(m *dns.Msg, w dns.ResponseWriter) {
 			if !d.isSelfNebulaOrLocalhost(w.RemoteAddr().String()) {
 				return
 			}
-			if debugEnabled {
-				d.l.Debug("DNS query", "type", "TXT", "name", q.Name)
-			}
+			d.l.Debugf("Query for TXT %s", q.Name)
 			ip := d.QueryCert(q.Name)
 			if ip != "" {
 				rr, err := dns.NewRR(fmt.Sprintf("%s TXT %s", q.Name, ip))
@@ -421,12 +145,12 @@ func (d *dnsServer) parseQuery(m *dns.Msg, w dns.ResponseWriter) {
 		}
 	}
 
-	if len(m.Answer) == 0 && !anyNameExists {
+	if len(m.Answer) == 0 {
 		m.Rcode = dns.RcodeNameError
 	}
 }
 
-func (d *dnsServer) handleDnsRequest(w dns.ResponseWriter, r *dns.Msg) {
+func (d *dnsRecords) handleDnsRequest(w dns.ResponseWriter, r *dns.Msg) {
 	m := new(dns.Msg)
 	m.SetReply(r)
 	m.Compress = false
@@ -439,6 +163,21 @@ func (d *dnsServer) handleDnsRequest(w dns.ResponseWriter, r *dns.Msg) {
 	w.WriteMsg(m)
 }
 
+func dnsMain(l *logrus.Logger, cs *CertState, hostMap *HostMap, c *config.C) func() {
+	dnsR = newDnsRecords(l, cs, hostMap)
+
+	// attach request handler func
+	dns.HandleFunc(".", dnsR.handleDnsRequest)
+
+	c.RegisterReloadCallback(func(c *config.C) {
+		reloadDns(l, c)
+	})
+
+	return func() {
+		startDns(l, c)
+	}
+}
+
 func getDnsServerAddr(c *config.C) string {
 	dnsHost := strings.TrimSpace(c.GetString("lighthouse.dns.host", ""))
 	// Old guidance was to provide the literal `[::]` in `lighthouse.dns.host` but that won't resolve.
@@ -447,3 +186,25 @@ func getDnsServerAddr(c *config.C) string {
 	}
 	return net.JoinHostPort(dnsHost, strconv.Itoa(c.GetInt("lighthouse.dns.port", 53)))
 }
+
+func startDns(l *logrus.Logger, c *config.C) {
+	dnsAddr = getDnsServerAddr(c)
+	dnsServer = &dns.Server{Addr: dnsAddr, Net: "udp"}
+	l.WithField("dnsListener", dnsAddr).Info("Starting DNS responder")
+	err := dnsServer.ListenAndServe()
+	defer dnsServer.Shutdown()
+	if err != nil {
+		l.Errorf("Failed to start server: %s\n ", err.Error())
+	}
+}
+
+func reloadDns(l *logrus.Logger, c *config.C) {
+	if dnsAddr == getDnsServerAddr(c) {
+		l.Debug("No DNS server config change detected")
+		return
+	}
+
+	l.Debug("Restarting DNS server")
+	dnsServer.Shutdown()
+	go startDns(l, c)
+}

dns_server_test.go

@@ -1,46 +1,19 @@
 package nebula
 
 import (
-	"context"
-	"log/slog"
-	"net"
 	"net/netip"
-	"strconv"
 	"testing"
-	"time"
 
-	"github.com/gaissmai/bart"
 	"github.com/miekg/dns"
-	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/cert_test"
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/config"
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 )
 
-type stubDNSWriter struct{}
-
-func (stubDNSWriter) LocalAddr() net.Addr { return &net.UDPAddr{} }
-func (stubDNSWriter) RemoteAddr() net.Addr {
-	return &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 5353}
-}
-func (stubDNSWriter) Write([]byte) (int, error) { return 0, nil }
-func (stubDNSWriter) WriteMsg(*dns.Msg) error   { return nil }
-func (stubDNSWriter) Close() error              { return nil }
-func (stubDNSWriter) TsigStatus() error         { return nil }
-func (stubDNSWriter) TsigTimersOnly(bool)       {}
-func (stubDNSWriter) Hijack()                   {}
-
 func TestParsequery(t *testing.T) {
-	l := slog.New(slog.DiscardHandler)
+	l := logrus.New()
 	hostMap := &HostMap{}
-	ds := &dnsServer{
-		l:       l,
-		dnsMap4: make(map[string]netip.Addr),
-		dnsMap6: make(map[string]netip.Addr),
-		hostMap: hostMap,
-	}
-	ds.enabled.Store(true)
+	ds := newDnsRecords(l, &CertState{}, hostMap)
 	addrs := []netip.Addr{
 		netip.MustParseAddr("1.2.3.4"),
 		netip.MustParseAddr("1.2.3.5"),
@@ -48,56 +21,18 @@ func TestParsequery(t *testing.T) {
 		netip.MustParseAddr("fd01::25"),
 	}
 	ds.Add("test.com.com", addrs)
-	ds.Add("v4only.com.com", []netip.Addr{netip.MustParseAddr("1.2.3.6")})
-	ds.Add("v6only.com.com", []netip.Addr{netip.MustParseAddr("fd01::26")})
 
 	m := &dns.Msg{}
 	m.SetQuestion("test.com.com", dns.TypeA)
 	ds.parseQuery(m, nil)
 	assert.NotNil(t, m.Answer)
 	assert.Equal(t, "1.2.3.4", m.Answer[0].(*dns.A).A.String())
-	assert.Equal(t, dns.RcodeSuccess, m.Rcode)
 
 	m = &dns.Msg{}
 	m.SetQuestion("test.com.com", dns.TypeAAAA)
 	ds.parseQuery(m, nil)
 	assert.NotNil(t, m.Answer)
 	assert.Equal(t, "fd01::24", m.Answer[0].(*dns.AAAA).AAAA.String())
-	assert.Equal(t, dns.RcodeSuccess, m.Rcode)
-
-	// A known name with no record of the requested type should return NODATA
-	// (NOERROR with empty answer), not NXDOMAIN.
-	m = &dns.Msg{}
-	m.SetQuestion("v4only.com.com", dns.TypeAAAA)
-	ds.parseQuery(m, nil)
-	assert.Empty(t, m.Answer)
-	assert.Equal(t, dns.RcodeSuccess, m.Rcode)
-
-	m = &dns.Msg{}
-	m.SetQuestion("v6only.com.com", dns.TypeA)
-	ds.parseQuery(m, nil)
-	assert.Empty(t, m.Answer)
-	assert.Equal(t, dns.RcodeSuccess, m.Rcode)
-
-	// An unknown name should still return NXDOMAIN.
-	m = &dns.Msg{}
-	m.SetQuestion("unknown.com.com", dns.TypeA)
-	ds.parseQuery(m, nil)
-	assert.Empty(t, m.Answer)
-	assert.Equal(t, dns.RcodeNameError, m.Rcode)
-
-	// short lookups should not fail
-	m = &dns.Msg{}
-	m.Question = []dns.Question{{Name: "", Qtype: dns.TypeTXT, Qclass: dns.ClassINET}}
-	ds.parseQuery(m, stubDNSWriter{})
-	assert.Empty(t, m.Answer)
-	assert.Equal(t, dns.RcodeNameError, m.Rcode)
-
-	m = &dns.Msg{}
-	m.Question = []dns.Question{{Name: ".", Qtype: dns.TypeTXT, Qclass: dns.ClassINET}}
-	ds.parseQuery(m, stubDNSWriter{})
-	assert.Empty(t, m.Answer)
-	assert.Equal(t, dns.RcodeNameError, m.Rcode)
 }
 
 func Test_getDnsServerAddr(t *testing.T) {
@@ -136,294 +71,3 @@ func Test_getDnsServerAddr(t *testing.T) {
 	}
 	assert.Equal(t, "[::]:1", getDnsServerAddr(c))
 }
-
-func newTestDnsServer(t *testing.T) (*dnsServer, *config.C) {
-	t.Helper()
-	sl := slog.New(slog.DiscardHandler)
-	ds := &dnsServer{
-		l:       sl,
-		ctx:     context.Background(),
-		dnsMap4: make(map[string]netip.Addr),
-		dnsMap6: make(map[string]netip.Addr),
-		hostMap: &HostMap{},
-	}
-	ds.mux = dns.NewServeMux()
-	ds.mux.HandleFunc(".", ds.handleDnsRequest)
-	return ds, config.NewC(nil)
-}
-
-func setDnsConfig(c *config.C, host string, port string, amLighthouse, serveDns bool) {
-	c.Settings["lighthouse"] = map[string]any{
-		"am_lighthouse": amLighthouse,
-		"serve_dns":     serveDns,
-		"dns": map[string]any{
-			"host": host,
-			"port": port,
-		},
-	}
-}
-
-func TestDnsServer_reload_initial_disabled(t *testing.T) {
-	ds, c := newTestDnsServer(t)
-	setDnsConfig(c, "127.0.0.1", "0", true, false)
-
-	require.NoError(t, ds.reload(c, true))
-	assert.False(t, ds.enabled.Load())
-	assert.Equal(t, "127.0.0.1:0", ds.addr)
-	assert.Nil(t, ds.server)
-}
-
-func TestDnsServer_reload_initial_enabled(t *testing.T) {
-	ds, c := newTestDnsServer(t)
-	setDnsConfig(c, "127.0.0.1", "0", true, true)
-
-	require.NoError(t, ds.reload(c, true))
-	assert.True(t, ds.enabled.Load())
-	assert.Equal(t, "127.0.0.1:0", ds.addr)
-	// initial never starts a runner; that's Control.Start's job
-	assert.Nil(t, ds.server)
-}
-
-func TestDnsServer_reload_initial_serveDnsWithoutLighthouse(t *testing.T) {
-	ds, c := newTestDnsServer(t)
-	setDnsConfig(c, "127.0.0.1", "0", false, true)
-
-	require.NoError(t, ds.reload(c, true))
-	// Wants DNS but isn't a lighthouse: gated off, no runner.
-	assert.False(t, ds.enabled.Load())
-}
-
-func TestDnsServer_reload_sameAddr_noOp(t *testing.T) {
-	ds, c := newTestDnsServer(t)
-	setDnsConfig(c, "127.0.0.1", "0", true, true)
-
-	require.NoError(t, ds.reload(c, true))
-	// No server running yet, no addr change. Reload should not spawn anything.
-	require.NoError(t, ds.reload(c, false))
-	assert.True(t, ds.enabled.Load())
-	assert.Nil(t, ds.server)
-}
-
-func TestDnsServer_StartStop_lifecycle(t *testing.T) {
-	// Bind to a real (random) UDP port so we exercise the actual
-	// ListenAndServe + Shutdown plumbing including the started-chan race fix.
-	port := freeUDPPort(t)
-
-	ds, c := newTestDnsServer(t)
-	setDnsConfig(c, "127.0.0.1", port, true, true)
-	require.NoError(t, ds.reload(c, true))
-
-	done := make(chan struct{})
-	go func() {
-		ds.Start()
-		close(done)
-	}()
-
-	waitFor(t, func() bool {
-		ds.serverMu.Lock()
-		started := ds.started
-		ds.serverMu.Unlock()
-		if started == nil {
-			return false
-		}
-		select {
-		case <-started:
-			return true
-		default:
-			return false
-		}
-	})
-
-	ds.Stop()
-	select {
-	case <-done:
-	case <-time.After(5 * time.Second):
-		t.Fatal("Start did not return after Stop")
-	}
-}
-
-func TestDnsServer_Stop_beforeBind_doesNotHang(t *testing.T) {
-	// Stop called immediately after Start should not deadlock even if bind
-	// hasn't completed yet. This exercises the started-chan close-on-bind-fail
-	// path: by binding to an obviously bad port (privileged) we get a fast
-	// bind error before NotifyStartedFunc fires.
-	ds, c := newTestDnsServer(t)
-	// Use a port that should fail to bind (negative would be invalid, use a
-	// host that won't resolve to ensure listenUDP fails quickly).
-	setDnsConfig(c, "256.256.256.256", "53", true, true)
-	require.NoError(t, ds.reload(c, true))
-
-	done := make(chan struct{})
-	go func() {
-		ds.Start()
-		close(done)
-	}()
-
-	// Give Start a moment to attempt the bind and fail.
-	select {
-	case <-done:
-		// Bind failed and Start returned; Stop should be a no-op.
-	case <-time.After(time.Second):
-		t.Fatal("Start did not return after a bad bind")
-	}
-
-	stopped := make(chan struct{})
-	go func() {
-		ds.Stop()
-		close(stopped)
-	}()
-	select {
-	case <-stopped:
-	case <-time.After(time.Second):
-		t.Fatal("Stop hung after a failed bind")
-	}
-}
-
-// newTestPKI builds a minimal *PKI with a single v1 cert whose name and
-// VPN addresses are caller-provided, suitable for exercising seedSelf and
-// QueryCert self handling.
-func newTestPKI(t *testing.T, name string, addrs []netip.Addr) *PKI {
-	t.Helper()
-	networks := make([]netip.Prefix, 0, len(addrs))
-	for _, a := range addrs {
-		bits := 32
-		if a.Is6() {
-			bits = 128
-		}
-		networks = append(networks, netip.PrefixFrom(a, bits))
-	}
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil)
-	c, _, _, _ := cert_test.NewTestCert(cert.Version2, cert.Curve_CURVE25519, ca, caKey, name, time.Time{}, time.Time{}, networks, nil, nil)
-
-	addrsTable := new(bart.Lite)
-	for _, a := range addrs {
-		addrsTable.Insert(netip.PrefixFrom(a, a.BitLen()))
-	}
-
-	cs := &CertState{
-		v2Cert:            c,
-		initiatingVersion: cert.Version2,
-		myVpnAddrs:        addrs,
-		myVpnAddrsTable:   addrsTable,
-	}
-	pki := &PKI{}
-	pki.cs.Store(cs)
-	return pki
-}
-
-func TestDnsServer_seedSelf_addsOwnRecord(t *testing.T) {
-	ds, c := newTestDnsServer(t)
-	myV4 := netip.MustParseAddr("10.0.0.1")
-	myV6 := netip.MustParseAddr("fd00::1")
-	ds.pki = newTestPKI(t, "lighthouse", []netip.Addr{myV4, myV6})
-	setDnsConfig(c, "127.0.0.1", "0", true, true)
-	require.NoError(t, ds.reload(c, true))
-
-	ds.seedSelf()
-	got4, exists := ds.Query(dns.TypeA, "lighthouse.")
-	assert.True(t, exists)
-	assert.Equal(t, myV4, got4)
-	got6, exists := ds.Query(dns.TypeAAAA, "lighthouse.")
-	assert.True(t, exists)
-	assert.Equal(t, myV6, got6)
-}
-
-func TestDnsServer_seedSelf_disabled_noOp(t *testing.T) {
-	ds, c := newTestDnsServer(t)
-	ds.pki = newTestPKI(t, "lighthouse", []netip.Addr{netip.MustParseAddr("10.0.0.1")})
-	setDnsConfig(c, "127.0.0.1", "0", true, false)
-	require.NoError(t, ds.reload(c, true))
-
-	ds.seedSelf()
-	_, exists := ds.Query(dns.TypeA, "lighthouse.")
-	assert.False(t, exists)
-}
-
-func TestDnsServer_clearRecords_dropsSelfHost(t *testing.T) {
-	ds, c := newTestDnsServer(t)
-	ds.pki = newTestPKI(t, "lighthouse", []netip.Addr{netip.MustParseAddr("10.0.0.1")})
-	setDnsConfig(c, "127.0.0.1", "0", true, true)
-	require.NoError(t, ds.reload(c, true))
-	ds.seedSelf()
-	require.NotEmpty(t, ds.selfHost)
-
-	ds.clearRecords()
-	assert.Empty(t, ds.selfHost)
-	_, exists := ds.Query(dns.TypeA, "lighthouse.")
-	assert.False(t, exists)
-}
-
-func TestDnsServer_QueryCert_returnsOwnCert(t *testing.T) {
-	ds, _ := newTestDnsServer(t)
-	myV4 := netip.MustParseAddr("10.0.0.1")
-	ds.pki = newTestPKI(t, "lighthouse", []netip.Addr{myV4})
-
-	got := ds.QueryCert(myV4.String() + ".")
-	assert.NotEmpty(t, got, "TXT lookup of our own VPN address should return our cert")
-
-	other := netip.MustParseAddr("10.0.0.99")
-	assert.Empty(t, ds.QueryCert(other.String()+"."), "unknown peer IP should return nothing")
-}
-
-func TestDnsServer_reload_disable_stopsRunningServer(t *testing.T) {
-	port := freeUDPPort(t)
-	ds, c := newTestDnsServer(t)
-	setDnsConfig(c, "127.0.0.1", port, true, true)
-	require.NoError(t, ds.reload(c, true))
-
-	startReturned := make(chan struct{})
-	go func() {
-		ds.Start()
-		close(startReturned)
-	}()
-	waitForBind(t, ds)
-
-	// Toggle serve_dns off; reload should shut the running server down.
-	setDnsConfig(c, "127.0.0.1", port, true, false)
-	require.NoError(t, ds.reload(c, false))
-	select {
-	case <-startReturned:
-	case <-time.After(5 * time.Second):
-		t.Fatal("Start did not return after reload disabled DNS")
-	}
-	assert.False(t, ds.enabled.Load())
-}
-
-func freeUDPPort(t *testing.T) string {
-	t.Helper()
-	conn, err := net.ListenPacket("udp", "127.0.0.1:0")
-	require.NoError(t, err)
-	port := conn.LocalAddr().(*net.UDPAddr).Port
-	require.NoError(t, conn.Close())
-	return strconv.Itoa(port)
-}
-
-func waitForBind(t *testing.T, ds *dnsServer) {
-	t.Helper()
-	waitFor(t, func() bool {
-		ds.serverMu.Lock()
-		started := ds.started
-		ds.serverMu.Unlock()
-		if started == nil {
-			return false
-		}
-		select {
-		case <-started:
-			return true
-		default:
-			return false
-		}
-	})
-}
-
-func waitFor(t *testing.T, cond func() bool) {
-	t.Helper()
-	deadline := time.Now().Add(5 * time.Second)
-	for time.Now().Before(deadline) {
-		if cond() {
-			return
-		}
-		time.Sleep(5 * time.Millisecond)
-	}
-	t.Fatal("timed out waiting for condition")
-}

docker/Dockerfile

@@ -1,16 +1,6 @@
 FROM gcr.io/distroless/static:latest
 
 ARG TARGETOS TARGETARCH
-
-ARG VERSION=dev
-ARG REVISION=unknown
-LABEL org.opencontainers.image.title="nebula" \
-      org.opencontainers.image.description="A scalable overlay networking tool with a focus on performance, simplicity and security" \
-      org.opencontainers.image.vendor="Nebula OSS" \
-      org.opencontainers.image.source="https://github.com/slackhq/nebula" \
-      org.opencontainers.image.version="${VERSION}" \
-      org.opencontainers.image.revision="${REVISION}"
-
 COPY build/$TARGETOS-$TARGETARCH/nebula /nebula
 COPY build/$TARGETOS-$TARGETARCH/nebula-cert /nebula-cert
 

e2e/handshake_manager_test.go

@@ -1,577 +0,0 @@
-//go:build e2e_testing
-// +build e2e_testing
-
-package e2e
-
-import (
-	"net/netip"
-	"testing"
-	"time"
-
-	"github.com/slackhq/nebula"
-	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/cert_test"
-	"github.com/slackhq/nebula/e2e/router"
-	"github.com/slackhq/nebula/header"
-	"github.com/slackhq/nebula/udp"
-	"github.com/stretchr/testify/assert"
-)
-
-// makeHandshakePacket creates a handshake packet with the given parameters.
-func makeHandshakePacket(from, to netip.AddrPort, subtype header.MessageSubType, remoteIndex uint32, counter uint64) *udp.Packet {
-	data := make([]byte, 200)
-	header.Encode(data, header.Version, header.Handshake, subtype, remoteIndex, counter)
-	for i := header.Len; i < len(data); i++ {
-		data[i] = byte(i)
-	}
-	return &udp.Packet{To: to, From: from, Data: data}
-}
-
-func TestHandshakeRetransmitDuplicate(t *testing.T) {
-	t.Parallel()
-	// Verify the responder correctly handles receiving the same msg1 multiple times
-	// (retransmission). The duplicate goes through CheckAndComplete -> ErrAlreadySeen
-	// and the cached response is resent.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-
-	t.Log("Trigger handshake from me to them")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi")))
-
-	t.Log("Grab my msg1")
-	msg1 := myControl.GetFromUDP(true)
-
-	t.Log("Inject msg1 into them, first time")
-	theirControl.InjectUDPPacket(msg1)
-	_ = theirControl.GetFromUDP(true)
-
-	t.Log("Inject the SAME msg1 again, tests ErrAlreadySeen path")
-	theirControl.InjectUDPPacket(msg1)
-	resp2 := theirControl.GetFromUDP(true)
-	assert.NotNil(t, resp2, "should get cached response on duplicate msg1")
-
-	t.Log("Complete handshake with cached response")
-	myControl.InjectUDPPacket(resp2)
-	myControl.WaitForType(1, 0, theirControl)
-
-	t.Log("Drain cached packet and verify tunnel works")
-	cachedPacket := theirControl.GetFromTun(true)
-	assertUdpPacket(t, []byte("Hi"), cachedPacket, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), 80, 80)
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	t.Log("Verify only one tunnel exists on each side")
-	assert.Len(t, myControl.ListHostmapHosts(false), 1)
-	assert.Len(t, theirControl.ListHostmapHosts(false), 1)
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestHandshakeTruncatedPacketRecovery(t *testing.T) {
-	t.Parallel()
-	// Verify that a truncated handshake packet is ignored and the real
-	// packet can still complete the handshake.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-
-	t.Log("Trigger handshake")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi")))
-
-	t.Log("Get msg1 and deliver to responder")
-	msg1 := myControl.GetFromUDP(true)
-	theirControl.InjectUDPPacket(msg1)
-
-	t.Log("Get the real response")
-	realResp := theirControl.GetFromUDP(true)
-
-	t.Log("Truncate the response and inject, should be ignored")
-	truncResp := realResp.Copy()
-	truncResp.Data = truncResp.Data[:header.Len]
-	myControl.InjectUDPPacket(truncResp)
-
-	t.Log("Verify pending handshake survived the truncated packet")
-	assert.NotEmpty(t, myControl.ListHostmapHosts(true), "pending handshake should still exist")
-
-	t.Log("Inject real response, should complete handshake")
-	myControl.InjectUDPPacket(realResp)
-	myControl.WaitForType(1, 0, theirControl)
-
-	t.Log("Drain and verify tunnel")
-	cachedPacket := theirControl.GetFromTun(true)
-	assertUdpPacket(t, []byte("Hi"), cachedPacket, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), 80, 80)
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestHandshakeOrphanedMsg2Dropped(t *testing.T) {
-	t.Parallel()
-	// A msg2 arriving with no matching pending index should be silently dropped
-	// with no response sent and no state changes.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-
-	t.Log("Complete a normal handshake")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi")))
-	r.RouteForAllUntilTxTun(theirControl)
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	t.Log("Record hostmap state")
-	myIndexes := len(myControl.ListHostmapIndexes(false))
-
-	t.Log("Inject a fake msg2 with unknown RemoteIndex")
-	myControl.InjectUDPPacket(makeHandshakePacket(theirUdpAddr, myUdpAddr, header.HandshakeIXPSK0, 0xDEADBEEF, 2))
-
-	t.Log("Verify no new indexes created")
-	assert.Equal(t, myIndexes, len(myControl.ListHostmapIndexes(false)))
-
-	t.Log("Verify no UDP response was sent")
-	time.Sleep(100 * time.Millisecond)
-	assert.Nil(t, myControl.GetFromUDP(false), "should not send a response to orphaned msg2")
-
-	t.Log("Verify existing tunnel still works")
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestHandshakeUnknownMessageCounter(t *testing.T) {
-	t.Parallel()
-	// A handshake packet with an unexpected message counter should be silently
-	// dropped with no side effects and no UDP response.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, _, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-
-	myControl.Start()
-	theirControl.Start()
-
-	t.Log("Inject handshake with MessageCounter=3")
-	myControl.InjectUDPPacket(makeHandshakePacket(theirUdpAddr, myUdpAddr, header.HandshakeIXPSK0, 0, 3))
-
-	t.Log("Inject handshake with MessageCounter=99")
-	myControl.InjectUDPPacket(makeHandshakePacket(theirUdpAddr, myUdpAddr, header.HandshakeIXPSK0, 0, 99))
-
-	t.Log("Verify no tunnels or pending handshakes")
-	assert.Empty(t, myControl.ListHostmapHosts(false))
-	assert.Empty(t, myControl.ListHostmapHosts(true))
-
-	t.Log("Verify no UDP response was sent")
-	time.Sleep(100 * time.Millisecond)
-	assert.Nil(t, myControl.GetFromUDP(false))
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestHandshakeUnknownSubtype(t *testing.T) {
-	t.Parallel()
-	// A handshake packet with an unknown subtype should be silently dropped.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, _, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-	theirControl, _, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.Start()
-	theirControl.Start()
-
-	t.Log("Inject handshake with unknown subtype 99")
-	myControl.InjectUDPPacket(makeHandshakePacket(theirUdpAddr, myUdpAddr, header.MessageSubType(99), 0, 1))
-
-	t.Log("Verify no tunnels or pending handshakes")
-	assert.Empty(t, myControl.ListHostmapHosts(false))
-	assert.Empty(t, myControl.ListHostmapHosts(true))
-
-	t.Log("Verify no UDP response was sent")
-	time.Sleep(100 * time.Millisecond)
-	assert.Nil(t, myControl.GetFromUDP(false))
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestHandshakeLateResponse(t *testing.T) {
-	t.Parallel()
-	// After a handshake times out, a late response should be silently ignored
-	// with no new tunnels created.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", m{
-		"handshakes": m{
-			"try_interval": "200ms",
-			"retries":      2,
-		},
-	})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-
-	myControl.Start()
-	theirControl.Start()
-
-	t.Log("Trigger handshake from me")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi")))
-
-	t.Log("Grab msg1 but don't deliver")
-	msg1 := myControl.GetFromUDP(true)
-
-	t.Log("Wait for handshake to time out")
-	for i := 0; i < 5; i++ {
-		time.Sleep(300 * time.Millisecond)
-		myControl.GetFromUDP(false)
-	}
-
-	t.Log("Confirm no pending handshakes remain")
-	assert.Empty(t, myControl.ListHostmapHosts(true))
-
-	t.Log("Deliver old msg1 to them, they create a tunnel")
-	theirControl.InjectUDPPacket(msg1)
-	resp := theirControl.GetFromUDP(true)
-	assert.NotNil(t, resp)
-
-	t.Log("Inject late response into me, should be ignored")
-	myControl.InjectUDPPacket(resp)
-
-	t.Log("No tunnel should exist on my side")
-	assert.Empty(t, myControl.ListHostmapHosts(false))
-	assert.Empty(t, myControl.ListHostmapHosts(true))
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestHandshakeSelfConnectionRejected(t *testing.T) {
-	t.Parallel()
-	// Verify that a node rejects a handshake containing its own VPN IP in the
-	// peer cert. We do this by sending the initiator's own msg1 back to itself.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-
-	// Need a lighthouse entry to trigger a handshake
-	myControl.InjectLightHouseAddr(netip.MustParseAddr("10.128.0.2"), netip.MustParseAddrPort("10.0.0.2:4242"))
-
-	myControl.Start()
-
-	t.Log("Trigger handshake from me")
-	myControl.InjectTunPacket(BuildTunUDPPacket(netip.MustParseAddr("10.128.0.2"), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi")))
-	msg1 := myControl.GetFromUDP(true)
-
-	t.Log("Drain any handshake retransmits before injecting")
-	time.Sleep(100 * time.Millisecond)
-	for myControl.GetFromUDP(false) != nil {
-	}
-
-	t.Log("Feed my own msg1 back to me as if it came from someone else")
-	selfMsg := msg1.Copy()
-	selfMsg.From = netip.MustParseAddrPort("10.0.0.99:4242")
-	selfMsg.To = myUdpAddr
-	myControl.InjectUDPPacket(selfMsg)
-
-	t.Log("Verify no response was sent (self-connection rejected)")
-	time.Sleep(100 * time.Millisecond)
-	// Drain any further retransmits from the original handshake, then check
-	// that none of them are a handshake response (MessageCounter=2)
-	h := &header.H{}
-	for {
-		p := myControl.GetFromUDP(false)
-		if p == nil {
-			break
-		}
-		_ = h.Parse(p.Data)
-		assert.NotEqual(t, uint64(2), h.MessageCounter,
-			"should not send a stage 2 response to self-connection")
-	}
-
-	t.Log("Verify no tunnel to myself was created")
-	assert.Nil(t, myControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false))
-
-	myControl.Stop()
-}
-
-func TestHandshakeMessageCounter0Dropped(t *testing.T) {
-	t.Parallel()
-	// MessageCounter=0 is not a valid handshake message and should be dropped.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, _, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-	_, _, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.Start()
-
-	t.Log("Inject handshake with MessageCounter=0")
-	myControl.InjectUDPPacket(makeHandshakePacket(theirUdpAddr, myUdpAddr, header.HandshakeIXPSK0, 0, 0))
-
-	time.Sleep(100 * time.Millisecond)
-	assert.Empty(t, myControl.ListHostmapHosts(false))
-	assert.Empty(t, myControl.ListHostmapHosts(true))
-	assert.Nil(t, myControl.GetFromUDP(false))
-
-	myControl.Stop()
-}
-
-func TestHandshakeRemoteAllowList(t *testing.T) {
-	t.Parallel()
-	// Verify that a handshake from a blocked underlay IP is dropped with no
-	// response and no state changes. Then verify the same packet from an
-	// allowed IP succeeds.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", m{
-		"lighthouse": m{
-			"remote_allow_list": m{
-				"10.0.0.0/8": true,
-				"0.0.0.0/0":  false,
-			},
-		},
-	})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-
-	t.Log("Trigger handshake from them")
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi")))
-	msg1 := theirControl.GetFromUDP(true)
-
-	t.Log("Rewrite the source to a blocked IP and inject")
-	blockedMsg := msg1.Copy()
-	blockedMsg.From = netip.MustParseAddrPort("192.168.1.1:4242")
-	myControl.InjectUDPPacket(blockedMsg)
-
-	t.Log("Verify no tunnel, no pending, no response from blocked source")
-	time.Sleep(100 * time.Millisecond)
-	assert.Empty(t, myControl.ListHostmapHosts(false))
-	assert.Empty(t, myControl.ListHostmapHosts(true))
-	assert.Nil(t, myControl.GetFromUDP(false), "should not respond to blocked source")
-
-	t.Log("Now inject the real packet from the allowed source")
-	myControl.InjectUDPPacket(msg1)
-
-	t.Log("Verify handshake completes from allowed source")
-	resp := myControl.GetFromUDP(true)
-	assert.NotNil(t, resp)
-	theirControl.InjectUDPPacket(resp)
-	theirControl.WaitForType(1, 0, myControl)
-
-	t.Log("Drain cached packet and verify tunnel works")
-	cachedPacket := myControl.GetFromTun(true)
-	assertUdpPacket(t, []byte("Hi"), cachedPacket, theirVpnIpNet[0].Addr(), myVpnIpNet[0].Addr(), 80, 80)
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestHandshakeAlreadySeenPreferredRemote(t *testing.T) {
-	t.Parallel()
-	// When a duplicate msg1 arrives via ErrAlreadySeen, verify the tunnel
-	// remains functional and hostmap index count is stable.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-
-	t.Log("Complete a normal handshake via the router")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi")))
-	r.RouteForAllUntilTxTun(theirControl)
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	t.Log("Record hostmap state")
-	theirIndexes := len(theirControl.ListHostmapIndexes(false))
-	hi := theirControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false)
-	assert.NotNil(t, hi)
-	originalRemote := hi.CurrentRemote
-
-	t.Log("Re-trigger traffic to cause a new handshake attempt (ErrAlreadySeen)")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("roam")))
-	r.RouteForAllUntilTxTun(theirControl)
-
-	t.Log("Verify tunnel still works")
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	t.Log("Verify remote is still valid and index count is stable")
-	hi2 := theirControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false)
-	assert.NotNil(t, hi2)
-	assert.Equal(t, originalRemote, hi2.CurrentRemote)
-	assert.Equal(t, theirIndexes, len(theirControl.ListHostmapIndexes(false)),
-		"no extra indexes should be created from ErrAlreadySeen")
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestHandshakeWrongResponderPacketStore(t *testing.T) {
-	t.Parallel()
-	// Verify that when the wrong host responds, the cached packets are
-	// transferred to the new handshake, the evil tunnel is closed, evil's
-	// address is blocked, and the correct tunnel is eventually established.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.100/24", nil)
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.99/24", nil)
-	evilControl, evilVpnIpNet, evilUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "evil", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), evilUdpAddr)
-
-	r := router.NewR(t, myControl, theirControl, evilControl)
-	defer r.RenderFlow()
-
-	myControl.Start()
-	theirControl.Start()
-	evilControl.Start()
-
-	t.Log("Send multiple packets to them (cached during handshake)")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("packet1")))
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("packet2")))
-
-	t.Log("Route until evil tunnel is closed")
-	h := &header.H{}
-	r.RouteForAllExitFunc(func(p *udp.Packet, c *nebula.Control) router.ExitType {
-		if err := h.Parse(p.Data); err != nil {
-			panic(err)
-		}
-		if h.Type == header.CloseTunnel && p.To == evilUdpAddr {
-			return router.RouteAndExit
-		}
-		return router.KeepRouting
-	})
-
-	t.Log("Verify evil's address is blocked in the new pending handshake")
-	pendingHI := myControl.GetHostInfoByVpnAddr(theirVpnIpNet[0].Addr(), true)
-	if pendingHI != nil {
-		assert.NotContains(t, pendingHI.RemoteAddrs, evilUdpAddr,
-			"evil's address should be blocked")
-	}
-
-	t.Log("Inject correct lighthouse addr for them")
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-
-	t.Log("Route until cached packets arrive at the real them")
-	p := r.RouteForAllUntilTxTun(theirControl)
-	assert.NotNil(t, p, "a cached packet should be delivered to the correct host")
-
-	t.Log("Verify the correct host has a tunnel")
-	assertHostInfoPair(t, myUdpAddr, theirUdpAddr, myVpnIpNet, theirVpnIpNet, myControl, theirControl)
-
-	t.Log("Verify no hostinfo artifacts from evil remain")
-	assert.Nil(t, myControl.GetHostInfoByVpnAddr(evilVpnIpNet[0].Addr(), true),
-		"no pending hostinfo for evil")
-	assert.Nil(t, myControl.GetHostInfoByVpnAddr(evilVpnIpNet[0].Addr(), false),
-		"no main hostinfo for evil")
-
-	myControl.Stop()
-	theirControl.Stop()
-	evilControl.Stop()
-}
-
-func TestHandshakeRelayComplete(t *testing.T) {
-	t.Parallel()
-	// Verify that a relay handshake completes correctly and relay state is
-	// properly maintained on all three nodes.
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", m{"relay": m{"use_relays": true}})
-	relayControl, relayVpnIpNet, relayUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "relay", "10.128.0.128/24", m{"relay": m{"am_relay": true}})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", m{"relay": m{"use_relays": true}})
-
-	myControl.InjectLightHouseAddr(relayVpnIpNet[0].Addr(), relayUdpAddr)
-	myControl.InjectRelays(theirVpnIpNet[0].Addr(), []netip.Addr{relayVpnIpNet[0].Addr()})
-	relayControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-
-	r := router.NewR(t, myControl, relayControl, theirControl)
-	defer r.RenderFlow()
-
-	myControl.Start()
-	relayControl.Start()
-	theirControl.Start()
-
-	t.Log("Trigger handshake via relay")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi via relay")))
-
-	p := r.RouteForAllUntilTxTun(theirControl)
-	assertUdpPacket(t, []byte("Hi via relay"), p, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), 80, 80)
-
-	t.Log("Verify bidirectional tunnel via relay")
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	t.Log("Verify relay state on my side shows relay-to-me")
-	myHI := myControl.GetHostInfoByVpnAddr(theirVpnIpNet[0].Addr(), false)
-	assert.NotNil(t, myHI)
-	assert.NotEmpty(t, myHI.CurrentRelaysToMe, "should have relay-to-me for them")
-
-	t.Log("Verify relay state on their side shows relay-to-me")
-	theirHI := theirControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false)
-	assert.NotNil(t, theirHI)
-	assert.NotEmpty(t, theirHI.CurrentRelaysToMe, "should have relay-to-me for me")
-
-	t.Log("Verify relay node shows through-me relays")
-	relayHI := relayControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false)
-	assert.NotNil(t, relayHI)
-
-	myControl.Stop()
-	relayControl.Stop()
-	theirControl.Stop()
-}
-
-// NOTE: Relay V1 cert + IPv6 rejection is not tested here because
-// BuildTunUDPPacket from a V4 node to a V6 address panics in the test
-// framework. The check is in handshake_manager.go handleOutbound relay
-// logic (lines ~304-313): if the relay host has a V1 cert and either
-// address is IPv6, the relay is skipped.
-
-// NOTE: Relay reestablishment (Disestablished state transition) is covered
-// by the existing TestReestablishRelays in handshakes_test.go.

e2e/handshakes_test.go

@@ -11,26 +11,25 @@ import (
 
 	"github.com/google/gopacket"
 	"github.com/google/gopacket/layers"
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/cert_test"
 	"github.com/slackhq/nebula/e2e/router"
 	"github.com/slackhq/nebula/header"
-	"github.com/slackhq/nebula/overlay"
 	"github.com/slackhq/nebula/udp"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"go.yaml.in/yaml/v3"
+	"gopkg.in/yaml.v3"
 )
 
 func BenchmarkHotPath(b *testing.B) {
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
+	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
 	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
 
 	// Put their info in our lighthouse
 	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
 
 	// Start the servers
 	myControl.Start()
@@ -39,68 +38,16 @@ func BenchmarkHotPath(b *testing.B) {
 	r := router.NewR(b, myControl, theirControl)
 	r.CancelFlowLogs()
 
-	assertTunnel(b, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	// Pre-build the IP packet bytes once so the bench measures the data plane,
-	// not gopacket SerializeLayers overhead.
-	prebuilt := BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
-
-	// EnableFanIn switches the router to a 0-alloc routing path. Required
-	// for hot-path benchmarks; would conflict with GetFromUDP-using tests.
-	r.EnableFanIn()
-
-	b.ResetTimer()
-
 	for n := 0; n < b.N; n++ {
-		myControl.InjectTunPacket(prebuilt)
-		// Release the TUN-side bytes back to the harness freelist; the bench
-		// just confirms a packet arrived, the contents aren't inspected.
-		overlay.ReleaseTunBuf(r.RouteForAllUntilTxTun(theirControl))
+		myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
+		_ = r.RouteForAllUntilTxTun(theirControl)
 	}
 
 	myControl.Stop()
 	theirControl.Stop()
 }
 
-func BenchmarkHotPathRelay(b *testing.B) {
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version1, ca, caKey, "me     ", "10.128.0.1/24", m{"relay": m{"use_relays": true}})
-	relayControl, relayVpnIpNet, relayUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "relay  ", "10.128.0.128/24", m{"relay": m{"am_relay": true}})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them   ", "10.128.0.2/24", m{"relay": m{"use_relays": true}})
-
-	// Teach my how to get to the relay and that their can be reached via the relay
-	myControl.InjectLightHouseAddr(relayVpnIpNet[0].Addr(), relayUdpAddr)
-	myControl.InjectRelays(theirVpnIpNet[0].Addr(), []netip.Addr{relayVpnIpNet[0].Addr()})
-	relayControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-
-	// Build a router so we don't have to reason who gets which packet
-	r := router.NewR(b, myControl, relayControl, theirControl)
-	r.CancelFlowLogs()
-
-	// Start the servers
-	myControl.Start()
-	relayControl.Start()
-	theirControl.Start()
-
-	assertTunnel(b, theirVpnIpNet[0].Addr(), myVpnIpNet[0].Addr(), theirControl, myControl, r)
-
-	prebuilt := BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
-	r.EnableFanIn()
-
-	b.ResetTimer()
-
-	for n := 0; n < b.N; n++ {
-		myControl.InjectTunPacket(prebuilt)
-		overlay.ReleaseTunBuf(r.RouteForAllUntilTxTun(theirControl))
-	}
-
-	myControl.Stop()
-	theirControl.Stop()
-	relayControl.Stop()
-}
-
 func TestGoodHandshake(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
 	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
@@ -113,7 +60,7 @@ func TestGoodHandshake(t *testing.T) {
 	theirControl.Start()
 
 	t.Log("Send a udp packet through to begin standing up the tunnel, this should come out the other side")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	t.Log("Have them consume my stage 0 packet. They have a tunnel now")
 	theirControl.InjectUDPPacket(myControl.GetFromUDP(true))
@@ -150,44 +97,7 @@ func TestGoodHandshake(t *testing.T) {
 	theirControl.Stop()
 }
 
-func TestGoodHandshakeNoOverlap(t *testing.T) {
-	t.Parallel()
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "me", "10.128.0.1/24", nil)
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "them", "2001::69/24", nil) //look ma, cross-stack!
-
-	// Put their info in our lighthouse
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-
-	// Start the servers
-	myControl.Start()
-	theirControl.Start()
-
-	empty := []byte{}
-	t.Log("do something to cause a handshake")
-	myControl.GetF().SendMessageToVpnAddr(header.Test, header.MessageNone, theirVpnIpNet[0].Addr(), empty, empty, empty)
-
-	t.Log("Have them consume my stage 0 packet. They have a tunnel now")
-	theirControl.InjectUDPPacket(myControl.GetFromUDP(true))
-
-	t.Log("Get their stage 1 packet")
-	stage1Packet := theirControl.GetFromUDP(true)
-
-	t.Log("Have me consume their stage 1 packet. I have a tunnel now")
-	myControl.InjectUDPPacket(stage1Packet)
-
-	t.Log("Wait until we see a test packet come through to make sure we give the tunnel time to complete")
-	myControl.WaitForType(header.Test, 0, theirControl)
-
-	t.Log("Make sure our host infos are correct")
-	assertHostInfoPair(t, myUdpAddr, theirUdpAddr, myVpnIpNet, theirVpnIpNet, myControl, theirControl)
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
 func TestWrongResponderHandshake(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 
 	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.100/24", nil)
@@ -207,7 +117,7 @@ func TestWrongResponderHandshake(t *testing.T) {
 	evilControl.Start()
 
 	t.Log("Start the handshake process, we will route until we see the evil tunnel closed")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	h := &header.H{}
 	r.RouteForAllExitFunc(func(p *udp.Packet, c *nebula.Control) router.ExitType {
@@ -264,7 +174,6 @@ func TestWrongResponderHandshake(t *testing.T) {
 }
 
 func TestWrongResponderHandshakeStaticHostMap(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 
 	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.99/24", nil)
@@ -289,7 +198,7 @@ func TestWrongResponderHandshakeStaticHostMap(t *testing.T) {
 	evilControl.Start()
 
 	t.Log("Start the handshake process, we will route until we see the evil tunnel closed")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	h := &header.H{}
 	r.RouteForAllExitFunc(func(p *udp.Packet, c *nebula.Control) router.ExitType {
@@ -347,7 +256,6 @@ func TestWrongResponderHandshakeStaticHostMap(t *testing.T) {
 }
 
 func TestStage1Race(t *testing.T) {
-	t.Parallel()
 	// This tests ensures that two hosts handshaking with each other at the same time will allow traffic to flow
 	// But will eventually collapse down to a single tunnel
 
@@ -368,8 +276,8 @@ func TestStage1Race(t *testing.T) {
 	theirControl.Start()
 
 	t.Log("Trigger a handshake to start on both me and them")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
+	theirControl.InjectTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them"))
 
 	t.Log("Get both stage 1 handshake packets")
 	myHsForThem := myControl.GetFromUDP(true)
@@ -428,7 +336,6 @@ func TestStage1Race(t *testing.T) {
 }
 
 func TestUncleanShutdownRaceLoser(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me  ", "10.128.0.1/24", nil)
 	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
@@ -446,7 +353,7 @@ func TestUncleanShutdownRaceLoser(t *testing.T) {
 	theirControl.Start()
 
 	r.Log("Trigger a handshake from me to them")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	p := r.RouteForAllUntilTxTun(theirControl)
 	assertUdpPacket(t, []byte("Hi from me"), p, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), 80, 80)
@@ -457,7 +364,7 @@ func TestUncleanShutdownRaceLoser(t *testing.T) {
 	myHostmap.Indexes = map[uint32]*nebula.HostInfo{}
 	myHostmap.RemoteIndexes = map[uint32]*nebula.HostInfo{}
 
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me again")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me again"))
 	p = r.RouteForAllUntilTxTun(theirControl)
 	assertUdpPacket(t, []byte("Hi from me again"), p, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), 80, 80)
 
@@ -478,7 +385,6 @@ func TestUncleanShutdownRaceLoser(t *testing.T) {
 }
 
 func TestUncleanShutdownRaceWinner(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me  ", "10.128.0.1/24", nil)
 	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
@@ -496,7 +402,7 @@ func TestUncleanShutdownRaceWinner(t *testing.T) {
 	theirControl.Start()
 
 	r.Log("Trigger a handshake from me to them")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	p := r.RouteForAllUntilTxTun(theirControl)
 	assertUdpPacket(t, []byte("Hi from me"), p, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), 80, 80)
@@ -508,7 +414,7 @@ func TestUncleanShutdownRaceWinner(t *testing.T) {
 	theirHostmap.Indexes = map[uint32]*nebula.HostInfo{}
 	theirHostmap.RemoteIndexes = map[uint32]*nebula.HostInfo{}
 
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them again")))
+	theirControl.InjectTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them again"))
 	p = r.RouteForAllUntilTxTun(myControl)
 	assertUdpPacket(t, []byte("Hi from them again"), p, theirVpnIpNet[0].Addr(), myVpnIpNet[0].Addr(), 80, 80)
 	r.RenderHostmaps("Derp hostmaps", myControl, theirControl)
@@ -530,7 +436,6 @@ func TestUncleanShutdownRaceWinner(t *testing.T) {
 }
 
 func TestRelays(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version1, ca, caKey, "me     ", "10.128.0.1/24", m{"relay": m{"use_relays": true}})
 	relayControl, relayVpnIpNet, relayUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "relay  ", "10.128.0.128/24", m{"relay": m{"am_relay": true}})
@@ -551,37 +456,7 @@ func TestRelays(t *testing.T) {
 	theirControl.Start()
 
 	t.Log("Trigger a handshake from me to them via the relay")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
-
-	p := r.RouteForAllUntilTxTun(theirControl)
-	r.Log("Assert the tunnel works")
-	assertUdpPacket(t, []byte("Hi from me"), p, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), 80, 80)
-	r.RenderHostmaps("Final hostmaps", myControl, relayControl, theirControl)
-}
-
-func TestRelaysDontCareAboutIps(t *testing.T) {
-	t.Parallel()
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version2, ca, caKey, "me     ", "10.128.0.1/24", m{"relay": m{"use_relays": true}})
-	relayControl, relayVpnIpNet, relayUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "relay  ", "2001::9999/24", m{"relay": m{"am_relay": true}})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "them   ", "10.128.0.2/24", m{"relay": m{"use_relays": true}})
-
-	// Teach my how to get to the relay and that their can be reached via the relay
-	myControl.InjectLightHouseAddr(relayVpnIpNet[0].Addr(), relayUdpAddr)
-	myControl.InjectRelays(theirVpnIpNet[0].Addr(), []netip.Addr{relayVpnIpNet[0].Addr()})
-	relayControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-
-	// Build a router so we don't have to reason who gets which packet
-	r := router.NewR(t, myControl, relayControl, theirControl)
-	defer r.RenderFlow()
-
-	// Start the servers
-	myControl.Start()
-	relayControl.Start()
-	theirControl.Start()
-
-	t.Log("Trigger a handshake from me to them via the relay")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	p := r.RouteForAllUntilTxTun(theirControl)
 	r.Log("Assert the tunnel works")
@@ -590,7 +465,6 @@ func TestRelaysDontCareAboutIps(t *testing.T) {
 }
 
 func TestReestablishRelays(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version1, ca, caKey, "me     ", "10.128.0.1/24", m{"relay": m{"use_relays": true}})
 	relayControl, relayVpnIpNet, relayUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "relay  ", "10.128.0.128/24", m{"relay": m{"am_relay": true}})
@@ -611,14 +485,14 @@ func TestReestablishRelays(t *testing.T) {
 	theirControl.Start()
 
 	t.Log("Trigger a handshake from me to them via the relay")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	p := r.RouteForAllUntilTxTun(theirControl)
 	r.Log("Assert the tunnel works")
 	assertUdpPacket(t, []byte("Hi from me"), p, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), 80, 80)
 
 	t.Log("Ensure packet traversal from them to me via the relay")
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them")))
+	theirControl.InjectTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them"))
 
 	p = r.RouteForAllUntilTxTun(myControl)
 	r.Log("Assert the tunnel works")
@@ -633,7 +507,7 @@ func TestReestablishRelays(t *testing.T) {
 	for curIndexes >= start {
 		curIndexes = len(myControl.GetHostmap().Indexes)
 		r.Logf("Wait for the dead index to go away:start=%v indexes, current=%v indexes", start, curIndexes)
-		myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me should fail")))
+		myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me should fail"))
 
 		r.RouteForAllExitFunc(func(p *udp.Packet, c *nebula.Control) router.ExitType {
 			return router.RouteAndExit
@@ -650,7 +524,7 @@ func TestReestablishRelays(t *testing.T) {
 		myControl.InjectLightHouseAddr(relayVpnIpNet[0].Addr(), relayUdpAddr)
 		myControl.InjectRelays(theirVpnIpNet[0].Addr(), []netip.Addr{relayVpnIpNet[0].Addr()})
 		relayControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-		myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+		myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 		p = r.RouteForAllUntilTxTun(theirControl)
 		r.Log("Assert the tunnel works")
@@ -685,7 +559,7 @@ func TestReestablishRelays(t *testing.T) {
 	t.Log("Assert the tunnel works the other way, too")
 	for {
 		t.Log("RouteForAllUntilTxTun")
-		theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them")))
+		theirControl.InjectTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them"))
 
 		p = r.RouteForAllUntilTxTun(myControl)
 		r.Log("Assert the tunnel works")
@@ -722,7 +596,6 @@ func TestReestablishRelays(t *testing.T) {
 }
 
 func TestStage1RaceRelays(t *testing.T) {
-	t.Parallel()
 	//NOTE: this is a race between me and relay resulting in a full tunnel from me to them via relay
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me     ", "10.128.0.1/24", m{"relay": m{"use_relays": true}})
@@ -755,8 +628,8 @@ func TestStage1RaceRelays(t *testing.T) {
 	assertTunnel(t, theirVpnIpNet[0].Addr(), relayVpnIpNet[0].Addr(), theirControl, relayControl, r)
 
 	r.Log("Trigger a handshake from both them and me via relay to them and me")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
+	theirControl.InjectTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them"))
 
 	r.Log("Wait for a packet from them to me")
 	p := r.RouteForAllUntilTxTun(myControl)
@@ -770,12 +643,12 @@ func TestStage1RaceRelays(t *testing.T) {
 }
 
 func TestStage1RaceRelays2(t *testing.T) {
-	t.Parallel()
 	//NOTE: this is a race between me and relay resulting in a full tunnel from me to them via relay
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me     ", "10.128.0.1/24", m{"relay": m{"use_relays": true}})
 	relayControl, relayVpnIpNet, relayUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "relay  ", "10.128.0.128/24", m{"relay": m{"am_relay": true}})
 	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them   ", "10.128.0.2/24", m{"relay": m{"use_relays": true}})
+	l := NewTestLogger()
 
 	// Teach my how to get to the relay and that their can be reached via the relay
 	myControl.InjectLightHouseAddr(relayVpnIpNet[0].Addr(), relayUdpAddr)
@@ -797,41 +670,49 @@ func TestStage1RaceRelays2(t *testing.T) {
 	theirControl.Start()
 
 	r.Log("Get a tunnel between me and relay")
+	l.Info("Get a tunnel between me and relay")
 	assertTunnel(t, myVpnIpNet[0].Addr(), relayVpnIpNet[0].Addr(), myControl, relayControl, r)
 
 	r.Log("Get a tunnel between them and relay")
+	l.Info("Get a tunnel between them and relay")
 	assertTunnel(t, theirVpnIpNet[0].Addr(), relayVpnIpNet[0].Addr(), theirControl, relayControl, r)
 
 	r.Log("Trigger a handshake from both them and me via relay to them and me")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them")))
+	l.Info("Trigger a handshake from both them and me via relay to them and me")
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
+	theirControl.InjectTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them"))
 
 	//r.RouteUntilAfterMsgType(myControl, header.Control, header.MessageNone)
 	//r.RouteUntilAfterMsgType(theirControl, header.Control, header.MessageNone)
 
-	r.Log("Wait for a packet from them to me; myControl")
+	r.Log("Wait for a packet from them to me")
+	l.Info("Wait for a packet from them to me; myControl")
 	r.RouteForAllUntilTxTun(myControl)
-	r.Log("Wait for a packet from them to me; theirControl")
+	l.Info("Wait for a packet from them to me; theirControl")
 	r.RouteForAllUntilTxTun(theirControl)
 
 	r.Log("Assert the tunnel works")
+	l.Info("Assert the tunnel works")
 	assertTunnel(t, theirVpnIpNet[0].Addr(), myVpnIpNet[0].Addr(), theirControl, myControl, r)
 
 	t.Log("Wait until we remove extra tunnels")
-	t.Logf("Waiting for hostinfos to be removed... myControl=%d theirControl=%d relayControl=%d",
-		len(myControl.GetHostmap().Indexes),
-		len(theirControl.GetHostmap().Indexes),
-		len(relayControl.GetHostmap().Indexes),
-	)
+	l.Info("Wait until we remove extra tunnels")
+	l.WithFields(
+		logrus.Fields{
+			"myControl":    len(myControl.GetHostmap().Indexes),
+			"theirControl": len(theirControl.GetHostmap().Indexes),
+			"relayControl": len(relayControl.GetHostmap().Indexes),
+		}).Info("Waiting for hostinfos to be removed...")
 	hostInfos := len(myControl.GetHostmap().Indexes) + len(theirControl.GetHostmap().Indexes) + len(relayControl.GetHostmap().Indexes)
 	retries := 60
 	for hostInfos > 6 && retries > 0 {
 		hostInfos = len(myControl.GetHostmap().Indexes) + len(theirControl.GetHostmap().Indexes) + len(relayControl.GetHostmap().Indexes)
-		t.Logf("Waiting for hostinfos to be removed... myControl=%d theirControl=%d relayControl=%d",
-			len(myControl.GetHostmap().Indexes),
-			len(theirControl.GetHostmap().Indexes),
-			len(relayControl.GetHostmap().Indexes),
-		)
+		l.WithFields(
+			logrus.Fields{
+				"myControl":    len(myControl.GetHostmap().Indexes),
+				"theirControl": len(theirControl.GetHostmap().Indexes),
+				"relayControl": len(relayControl.GetHostmap().Indexes),
+			}).Info("Waiting for hostinfos to be removed...")
 		assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
 		t.Log("Connection manager hasn't ticked yet")
 		time.Sleep(time.Second)
@@ -839,6 +720,7 @@ func TestStage1RaceRelays2(t *testing.T) {
 	}
 
 	r.Log("Assert the tunnel works")
+	l.Info("Assert the tunnel works")
 	assertTunnel(t, theirVpnIpNet[0].Addr(), myVpnIpNet[0].Addr(), theirControl, myControl, r)
 
 	myControl.Stop()
@@ -847,7 +729,6 @@ func TestStage1RaceRelays2(t *testing.T) {
 }
 
 func TestRehandshakingRelays(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version1, ca, caKey, "me     ", "10.128.0.1/24", m{"relay": m{"use_relays": true}})
 	relayControl, relayVpnIpNet, relayUdpAddr, relayConfig := newSimpleServer(cert.Version1, ca, caKey, "relay  ", "10.128.0.128/24", m{"relay": m{"am_relay": true}})
@@ -868,7 +749,7 @@ func TestRehandshakingRelays(t *testing.T) {
 	theirControl.Start()
 
 	t.Log("Trigger a handshake from me to them via the relay")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	p := r.RouteForAllUntilTxTun(theirControl)
 	r.Log("Assert the tunnel works")
@@ -951,7 +832,6 @@ func TestRehandshakingRelays(t *testing.T) {
 }
 
 func TestRehandshakingRelaysPrimary(t *testing.T) {
-	t.Parallel()
 	// This test is the same as TestRehandshakingRelays but one of the terminal types is a primary swap winner
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version1, ca, caKey, "me     ", "10.128.0.128/24", m{"relay": m{"use_relays": true}})
@@ -973,7 +853,7 @@ func TestRehandshakingRelaysPrimary(t *testing.T) {
 	theirControl.Start()
 
 	t.Log("Trigger a handshake from me to them via the relay")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
 
 	p := r.RouteForAllUntilTxTun(theirControl)
 	r.Log("Assert the tunnel works")
@@ -1056,7 +936,6 @@ func TestRehandshakingRelaysPrimary(t *testing.T) {
 }
 
 func TestRehandshaking(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, myUdpAddr, myConfig := newSimpleServer(cert.Version1, ca, caKey, "me  ", "10.128.0.2/24", nil)
 	theirControl, theirVpnIpNet, theirUdpAddr, theirConfig := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.1/24", nil)
@@ -1152,7 +1031,6 @@ func TestRehandshaking(t *testing.T) {
 }
 
 func TestRehandshakingLoser(t *testing.T) {
-	t.Parallel()
 	// The purpose of this test is that the race loser renews their certificate and rehandshakes. The final tunnel
 	// Should be the one with the new certificate
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
@@ -1251,7 +1129,6 @@ func TestRehandshakingLoser(t *testing.T) {
 }
 
 func TestRaceRegression(t *testing.T) {
-	t.Parallel()
 	// This test forces stage 1, stage 2, stage 1 to be received by me from them
 	// We had a bug where we were not finding the duplicate handshake and responding to the final stage 1 which
 	// caused a cross-linked hostinfo
@@ -1275,8 +1152,8 @@ func TestRaceRegression(t *testing.T) {
 	//them rx stage:2 initiatorIndex=120607833 responderIndex=4209862089
 
 	t.Log("Start both handshakes")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them")))
+	myControl.InjectTunUDPPacket(theirVpnIpNet[0].Addr(), 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me"))
+	theirControl.InjectTunUDPPacket(myVpnIpNet[0].Addr(), 80, theirVpnIpNet[0].Addr(), 80, []byte("Hi from them"))
 
 	t.Log("Get both stage 1")
 	myStage1ForThem := myControl.GetFromUDP(true)
@@ -1312,7 +1189,6 @@ func TestRaceRegression(t *testing.T) {
 }
 
 func TestV2NonPrimaryWithLighthouse(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	lhControl, lhVpnIpNet, lhUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "lh  ", "10.128.0.1/24, ff::1/64", m{"lighthouse": m{"am_lighthouse": true}})
 
@@ -1351,187 +1227,3 @@ func TestV2NonPrimaryWithLighthouse(t *testing.T) {
 	myControl.Stop()
 	theirControl.Stop()
 }
-
-func TestV2NonPrimaryWithOffNetLighthouse(t *testing.T) {
-	t.Parallel()
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	lhControl, lhVpnIpNet, lhUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "lh  ", "2001::1/64", m{"lighthouse": m{"am_lighthouse": true}})
-
-	o := m{
-		"static_host_map": m{
-			lhVpnIpNet[0].Addr().String(): []string{lhUdpAddr.String()},
-		},
-		"lighthouse": m{
-			"hosts": []string{lhVpnIpNet[0].Addr().String()},
-			"local_allow_list": m{
-				// Try and block our lighthouse updates from using the actual addresses assigned to this computer
-				// If we start discovering addresses the test router doesn't know about then test traffic cant flow
-				"10.0.0.0/24": true,
-				"::/0":        false,
-			},
-		},
-	}
-	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version2, ca, caKey, "me  ", "10.128.0.2/24, ff::2/64", o)
-	theirControl, theirVpnIpNet, _, _ := newSimpleServer(cert.Version2, ca, caKey, "them", "10.128.0.3/24, ff::3/64", o)
-
-	// Build a router so we don't have to reason who gets which packet
-	r := router.NewR(t, lhControl, myControl, theirControl)
-	defer r.RenderFlow()
-
-	// Start the servers
-	lhControl.Start()
-	myControl.Start()
-	theirControl.Start()
-
-	t.Log("Stand up an ipv6 tunnel between me and them")
-	assert.True(t, myVpnIpNet[1].Addr().Is6())
-	assert.True(t, theirVpnIpNet[1].Addr().Is6())
-	assertTunnel(t, myVpnIpNet[1].Addr(), theirVpnIpNet[1].Addr(), myControl, theirControl, r)
-
-	lhControl.Stop()
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestLighthouseUpdateOnReload(t *testing.T) {
-	t.Parallel()
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-
-	// Create the lighthouse
-	lhControl, lhVpnIpNet, lhUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "lh", "10.128.0.1/24", m{"lighthouse": m{"am_lighthouse": true}})
-
-	// Create a client with NO lighthouse configured and a long update interval.
-	// The initial SendUpdate at startup will be a no-op since no lighthouses are known.
-	myControl, myVpnIpNet, _, myConfig := newSimpleServer(cert.Version2, ca, caKey, "me", "10.128.0.2/24", m{
-		"lighthouse": m{
-			"interval": 600,
-			"local_allow_list": m{
-				"10.0.0.0/24": true,
-				"::/0":        false,
-			},
-		},
-	})
-
-	r := router.NewR(t, lhControl, myControl)
-	defer r.RenderFlow()
-
-	lhControl.Start()
-	myControl.Start()
-
-	// Drain any startup packets (there should be none meaningful)
-	r.FlushAll()
-
-	// Verify lighthouse has no knowledge of the client
-	assert.Nil(t, lhControl.QueryLighthouse(myVpnIpNet[0].Addr()))
-
-	// Build a new config that adds the lighthouse
-	newSettings := make(m)
-	for k, v := range myConfig.Settings {
-		newSettings[k] = v
-	}
-	newSettings["static_host_map"] = m{
-		lhVpnIpNet[0].Addr().String(): []any{lhUdpAddr.String()},
-	}
-	newSettings["lighthouse"] = m{
-		"hosts":    []any{lhVpnIpNet[0].Addr().String()},
-		"interval": 600,
-		"local_allow_list": m{
-			"10.0.0.0/24": true,
-			"::/0":        false,
-		},
-	}
-	newCfg, err := yaml.Marshal(newSettings)
-	require.NoError(t, err)
-
-	// Reload the config. The lighthouse.hosts change triggers TriggerUpdate,
-	// which wakes the update worker. It calls SendUpdate, initiating a
-	// handshake to the new lighthouse and caching the HostUpdateNotification.
-	require.NoError(t, myConfig.ReloadConfigString(string(newCfg)))
-
-	// Route until the lighthouse receives the HostUpdateNotification.
-	// This covers: handshake stage 1, stage 2, then the cached update.
-	done := make(chan struct{})
-	go func() {
-		r.RouteForAllUntilAfterMsgTypeTo(lhControl, header.LightHouse, 0)
-		close(done)
-	}()
-	select {
-	case <-done:
-	case <-time.After(5 * time.Second):
-		t.Fatal("timed out waiting for lighthouse update after config reload")
-	}
-
-	// Verify lighthouse now has the client's addresses
-	assert.NotNil(t, lhControl.QueryLighthouse(myVpnIpNet[0].Addr()))
-
-	r.RenderHostmaps("Final hostmaps", lhControl, myControl)
-	lhControl.Stop()
-	myControl.Stop()
-}
-
-func TestGoodHandshakeUnsafeDest(t *testing.T) {
-	t.Parallel()
-	unsafePrefix := "192.168.6.0/24"
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServerWithUdpAndUnsafeNetworks(cert.Version2, ca, caKey, "spooky", "10.128.0.2/24", netip.MustParseAddrPort("10.64.0.2:4242"), unsafePrefix, nil)
-	route := m{"route": unsafePrefix, "via": theirVpnIpNet[0].Addr().String()}
-	myCfg := m{
-		"tun": m{
-			"unsafe_routes": []m{route},
-		},
-	}
-	myControl, myVpnIpNet, myUdpAddr, myConfig := newSimpleServer(cert.Version2, ca, caKey, "me", "10.128.0.1/24", myCfg)
-	t.Logf("my config %v", myConfig)
-	// Put their info in our lighthouse
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-
-	spookyDest := netip.MustParseAddr("192.168.6.4")
-
-	// Start the servers
-	myControl.Start()
-	theirControl.Start()
-
-	t.Log("Send a udp packet through to begin standing up the tunnel, this should come out the other side")
-	myControl.InjectTunPacket(BuildTunUDPPacket(spookyDest, 80, myVpnIpNet[0].Addr(), 80, []byte("Hi from me")))
-
-	t.Log("Have them consume my stage 0 packet. They have a tunnel now")
-	theirControl.InjectUDPPacket(myControl.GetFromUDP(true))
-
-	t.Log("Get their stage 1 packet so that we can play with it")
-	stage1Packet := theirControl.GetFromUDP(true)
-
-	t.Log("I consume a garbage packet with a proper nebula header for our tunnel")
-	// this should log a statement and get ignored, allowing the real handshake packet to complete the tunnel
-	badPacket := stage1Packet.Copy()
-	badPacket.Data = badPacket.Data[:len(badPacket.Data)-header.Len]
-	myControl.InjectUDPPacket(badPacket)
-
-	t.Log("Have me consume their real stage 1 packet. I have a tunnel now")
-	myControl.InjectUDPPacket(stage1Packet)
-
-	t.Log("Wait until we see my cached packet come through")
-	myControl.WaitForType(1, 0, theirControl)
-
-	t.Log("Make sure our host infos are correct")
-	assertHostInfoPair(t, myUdpAddr, theirUdpAddr, myVpnIpNet, theirVpnIpNet, myControl, theirControl)
-
-	t.Log("Get that cached packet and make sure it looks right")
-	myCachedPacket := theirControl.GetFromTun(true)
-	assertUdpPacket(t, []byte("Hi from me"), myCachedPacket, myVpnIpNet[0].Addr(), spookyDest, 80, 80)
-
-	//reply
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnIpNet[0].Addr(), 80, spookyDest, 80, []byte("Hi from the spookyman")))
-	//wait for reply
-	theirControl.WaitForType(1, 0, myControl)
-	theirCachedPacket := myControl.GetFromTun(true)
-	assertUdpPacket(t, []byte("Hi from the spookyman"), theirCachedPacket, spookyDest, myVpnIpNet[0].Addr(), 80, 80)
-
-	t.Log("Do a bidirectional tunnel test")
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	r.RenderHostmaps("Final hostmaps", myControl, theirControl)
-	myControl.Stop()
-	theirControl.Stop()
-}

e2e/helpers_test.go

@@ -4,6 +4,7 @@
 package e2e
 
 import (
+	"fmt"
 	"io"
 	"net/netip"
 	"os"
@@ -11,21 +12,17 @@ import (
 	"testing"
 	"time"
 
-	"log/slog"
-
 	"dario.cat/mergo"
 	"github.com/google/gopacket"
 	"github.com/google/gopacket/layers"
-
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/cert_test"
 	"github.com/slackhq/nebula/config"
 	"github.com/slackhq/nebula/e2e/router"
-	"github.com/slackhq/nebula/logging"
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"go.yaml.in/yaml/v3"
+	"gopkg.in/yaml.v3"
 )
 
 type m = map[string]any
@@ -61,10 +58,6 @@ func newSimpleServer(v cert.Version, caCrt cert.Certificate, caKey []byte, name
 }
 
 func newSimpleServerWithUdp(v cert.Version, caCrt cert.Certificate, caKey []byte, name string, sVpnNetworks string, udpAddr netip.AddrPort, overrides m) (*nebula.Control, []netip.Prefix, netip.AddrPort, *config.C) {
-	return newSimpleServerWithUdpAndUnsafeNetworks(v, caCrt, caKey, name, sVpnNetworks, udpAddr, "", overrides)
-}
-
-func newSimpleServerWithUdpAndUnsafeNetworks(v cert.Version, caCrt cert.Certificate, caKey []byte, name string, sVpnNetworks string, udpAddr netip.AddrPort, sUnsafeNetworks string, overrides m) (*nebula.Control, []netip.Prefix, netip.AddrPort, *config.C) {
 	l := NewTestLogger()
 
 	var vpnNetworks []netip.Prefix
@@ -80,31 +73,7 @@ func newSimpleServerWithUdpAndUnsafeNetworks(v cert.Version, caCrt cert.Certific
 		panic("no vpn networks")
 	}
 
-	firewallInbound := []m{{
-		"proto": "any",
-		"port":  "any",
-		"host":  "any",
-	}}
-
-	var unsafeNetworks []netip.Prefix
-	if sUnsafeNetworks != "" {
-		firewallInbound = []m{{
-			"proto":      "any",
-			"port":       "any",
-			"host":       "any",
-			"local_cidr": "0.0.0.0/0",
-		}}
-
-		for _, sn := range strings.Split(sUnsafeNetworks, ",") {
-			x, err := netip.ParsePrefix(strings.TrimSpace(sn))
-			if err != nil {
-				panic(err)
-			}
-			unsafeNetworks = append(unsafeNetworks, x)
-		}
-	}
-
-	_, _, myPrivKey, myPEM := cert_test.NewTestCert(v, cert.Curve_CURVE25519, caCrt, caKey, name, time.Now(), time.Now().Add(5*time.Minute), vpnNetworks, unsafeNetworks, []string{})
+	_, _, myPrivKey, myPEM := cert_test.NewTestCert(v, cert.Curve_CURVE25519, caCrt, caKey, name, time.Now(), time.Now().Add(5*time.Minute), vpnNetworks, nil, []string{})
 
 	caB, err := caCrt.MarshalPEM()
 	if err != nil {
@@ -124,7 +93,11 @@ func newSimpleServerWithUdpAndUnsafeNetworks(v cert.Version, caCrt cert.Certific
 				"port":  "any",
 				"host":  "any",
 			}},
-			"inbound": firewallInbound,
+			"inbound": []m{{
+				"proto": "any",
+				"port":  "any",
+				"host":  "any",
+			}},
 		},
 		//"handshakes": m{
 		//	"try_interval": "1s",
@@ -134,7 +107,8 @@ func newSimpleServerWithUdpAndUnsafeNetworks(v cert.Version, caCrt cert.Certific
 			"port": udpAddr.Port(),
 		},
 		"logging": m{
-			"level": testLogLevelName(),
+			"timestamp_format": fmt.Sprintf("%v 15:04:05.000000", name),
+			"level":            l.Level.String(),
 		},
 		"timers": m{
 			"pending_deletion_interval": 2,
@@ -172,108 +146,6 @@ func newSimpleServerWithUdpAndUnsafeNetworks(v cert.Version, caCrt cert.Certific
 	return control, vpnNetworks, udpAddr, c
 }
 
-// newServer creates a nebula instance with fewer assumptions
-func newServer(caCrt []cert.Certificate, certs []cert.Certificate, key []byte, overrides m) (*nebula.Control, []netip.Prefix, netip.AddrPort, *config.C) {
-	l := NewTestLogger()
-
-	vpnNetworks := certs[len(certs)-1].Networks()
-
-	var udpAddr netip.AddrPort
-	if vpnNetworks[0].Addr().Is4() {
-		budpIp := vpnNetworks[0].Addr().As4()
-		budpIp[1] -= 128
-		udpAddr = netip.AddrPortFrom(netip.AddrFrom4(budpIp), 4242)
-	} else {
-		budpIp := vpnNetworks[0].Addr().As16()
-		// beef for funsies
-		budpIp[2] = 190
-		budpIp[3] = 239
-		udpAddr = netip.AddrPortFrom(netip.AddrFrom16(budpIp), 4242)
-	}
-
-	caStr := ""
-	for _, ca := range caCrt {
-		x, err := ca.MarshalPEM()
-		if err != nil {
-			panic(err)
-		}
-		caStr += string(x)
-	}
-	certStr := ""
-	for _, c := range certs {
-		x, err := c.MarshalPEM()
-		if err != nil {
-			panic(err)
-		}
-		certStr += string(x)
-	}
-
-	mc := m{
-		"pki": m{
-			"ca":   caStr,
-			"cert": certStr,
-			"key":  string(key),
-		},
-		//"tun": m{"disabled": true},
-		"firewall": m{
-			"outbound": []m{{
-				"proto": "any",
-				"port":  "any",
-				"host":  "any",
-			}},
-			"inbound": []m{{
-				"proto": "any",
-				"port":  "any",
-				"host":  "any",
-			}},
-		},
-		//"handshakes": m{
-		//	"try_interval": "1s",
-		//},
-		"listen": m{
-			"host": udpAddr.Addr().String(),
-			"port": udpAddr.Port(),
-		},
-		"logging": m{
-			"level": testLogLevelName(),
-		},
-		"timers": m{
-			"pending_deletion_interval": 2,
-			"connection_alive_interval": 2,
-		},
-	}
-
-	if overrides != nil {
-		final := m{}
-		err := mergo.Merge(&final, overrides, mergo.WithAppendSlice)
-		if err != nil {
-			panic(err)
-		}
-		err = mergo.Merge(&final, mc, mergo.WithAppendSlice)
-		if err != nil {
-			panic(err)
-		}
-		mc = final
-	}
-
-	cb, err := yaml.Marshal(mc)
-	if err != nil {
-		panic(err)
-	}
-
-	c := config.NewC(l)
-	cStr := string(cb)
-	c.LoadString(cStr)
-
-	control, err := nebula.Main(c, false, "e2e-test", l, nil)
-
-	if err != nil {
-		panic(err)
-	}
-
-	return control, vpnNetworks, udpAddr, c
-}
-
 type doneCb func()
 
 func deadline(t *testing.T, seconds time.Duration) doneCb {
@@ -292,26 +164,26 @@ func deadline(t *testing.T, seconds time.Duration) doneCb {
 	}
 }
 
-func assertTunnel(t testing.TB, vpnIpA, vpnIpB netip.Addr, controlA, controlB *nebula.Control, r *router.R) {
+func assertTunnel(t *testing.T, vpnIpA, vpnIpB netip.Addr, controlA, controlB *nebula.Control, r *router.R) {
 	// Send a packet from them to me
-	controlB.InjectTunPacket(BuildTunUDPPacket(vpnIpA, 80, vpnIpB, 90, []byte("Hi from B")))
+	controlB.InjectTunUDPPacket(vpnIpA, 80, vpnIpB, 90, []byte("Hi from B"))
 	bPacket := r.RouteForAllUntilTxTun(controlA)
 	assertUdpPacket(t, []byte("Hi from B"), bPacket, vpnIpB, vpnIpA, 90, 80)
 
 	// And once more from me to them
-	controlA.InjectTunPacket(BuildTunUDPPacket(vpnIpB, 80, vpnIpA, 90, []byte("Hello from A")))
+	controlA.InjectTunUDPPacket(vpnIpB, 80, vpnIpA, 90, []byte("Hello from A"))
 	aPacket := r.RouteForAllUntilTxTun(controlB)
 	assertUdpPacket(t, []byte("Hello from A"), aPacket, vpnIpA, vpnIpB, 90, 80)
 }
 
-func assertHostInfoPair(t testing.TB, addrA, addrB netip.AddrPort, vpnNetsA, vpnNetsB []netip.Prefix, controlA, controlB *nebula.Control) {
+func assertHostInfoPair(t *testing.T, addrA, addrB netip.AddrPort, vpnNetsA, vpnNetsB []netip.Prefix, controlA, controlB *nebula.Control) {
 	// Get both host infos
 	//TODO: CERT-V2 we may want to loop over each vpnAddr and assert all the things
 	hBinA := controlA.GetHostInfoByVpnAddr(vpnNetsB[0].Addr(), false)
-	require.NotNil(t, hBinA, "Host B was not found by vpnAddr in controlA")
+	assert.NotNil(t, hBinA, "Host B was not found by vpnAddr in controlA")
 
 	hAinB := controlB.GetHostInfoByVpnAddr(vpnNetsA[0].Addr(), false)
-	require.NotNil(t, hAinB, "Host A was not found by vpnAddr in controlB")
+	assert.NotNil(t, hAinB, "Host A was not found by vpnAddr in controlB")
 
 	// Check that both vpn and real addr are correct
 	assert.EqualValues(t, getAddrs(vpnNetsB), hBinA.VpnAddrs, "Host B VpnIp is wrong in control A")
@@ -325,7 +197,7 @@ func assertHostInfoPair(t testing.TB, addrA, addrB netip.AddrPort, vpnNetsA, vpn
 	assert.Equal(t, hBinA.RemoteIndex, hAinB.LocalIndex, "Host B remote index does not match host A local index")
 }
 
-func assertUdpPacket(t testing.TB, expected, b []byte, fromIp, toIp netip.Addr, fromPort, toPort uint16) {
+func assertUdpPacket(t *testing.T, expected, b []byte, fromIp, toIp netip.Addr, fromPort, toPort uint16) {
 	if toIp.Is6() {
 		assertUdpPacket6(t, expected, b, fromIp, toIp, fromPort, toPort)
 	} else {
@@ -333,7 +205,7 @@ func assertUdpPacket(t testing.TB, expected, b []byte, fromIp, toIp netip.Addr,
 	}
 }
 
-func assertUdpPacket6(t testing.TB, expected, b []byte, fromIp, toIp netip.Addr, fromPort, toPort uint16) {
+func assertUdpPacket6(t *testing.T, expected, b []byte, fromIp, toIp netip.Addr, fromPort, toPort uint16) {
 	packet := gopacket.NewPacket(b, layers.LayerTypeIPv6, gopacket.Lazy)
 	v6 := packet.Layer(layers.LayerTypeIPv6).(*layers.IPv6)
 	assert.NotNil(t, v6, "No ipv6 data found")
@@ -352,7 +224,7 @@ func assertUdpPacket6(t testing.TB, expected, b []byte, fromIp, toIp netip.Addr,
 	assert.Equal(t, expected, data.Payload(), "Data was incorrect")
 }
 
-func assertUdpPacket4(t testing.TB, expected, b []byte, fromIp, toIp netip.Addr, fromPort, toPort uint16) {
+func assertUdpPacket4(t *testing.T, expected, b []byte, fromIp, toIp netip.Addr, fromPort, toPort uint16) {
 	packet := gopacket.NewPacket(b, layers.LayerTypeIPv4, gopacket.Lazy)
 	v4 := packet.Layer(layers.LayerTypeIPv4).(*layers.IPv4)
 	assert.NotNil(t, v4, "No ipv4 data found")
@@ -379,87 +251,24 @@ func getAddrs(ns []netip.Prefix) []netip.Addr {
 	return a
 }
 
-func NewTestLogger() *slog.Logger {
+func NewTestLogger() *logrus.Logger {
+	l := logrus.New()
+
 	v := os.Getenv("TEST_LOGS")
 	if v == "" {
-		return slog.New(slog.NewTextHandler(io.Discard, nil))
+		l.SetOutput(io.Discard)
+		l.SetLevel(logrus.PanicLevel)
+		return l
 	}
 
-	level := slog.LevelInfo
 	switch v {
 	case "2":
-		level = slog.LevelDebug
+		l.SetLevel(logrus.DebugLevel)
 	case "3":
-		level = logging.LevelTrace
+		l.SetLevel(logrus.TraceLevel)
+	default:
+		l.SetLevel(logrus.InfoLevel)
 	}
-	return slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: level}))
-}
-
-// testLogLevelName returns the level name string accepted by logging.ApplyConfig
-// for the current TEST_LOGS setting. Kept in sync with NewTestLogger.
-func testLogLevelName() string {
-	switch os.Getenv("TEST_LOGS") {
-	case "2":
-		return "debug"
-	case "3":
-		return "trace"
-	case "":
-		return "info"
-	}
-	return "info"
-}
-
-// BuildTunUDPPacket assembles an IP+UDP packet suitable for Control.InjectTunPacket.
-// Using UDP here because it's a simpler protocol.
-func BuildTunUDPPacket(toAddr netip.Addr, toPort uint16, fromAddr netip.Addr, fromPort uint16, data []byte) []byte {
-	serialize := make([]gopacket.SerializableLayer, 0)
-	var netLayer gopacket.NetworkLayer
-	if toAddr.Is6() {
-		if !fromAddr.Is6() {
-			panic("Cant send ipv6 to ipv4")
-		}
-		ip := &layers.IPv6{
-			Version:    6,
-			NextHeader: layers.IPProtocolUDP,
-			SrcIP:      fromAddr.Unmap().AsSlice(),
-			DstIP:      toAddr.Unmap().AsSlice(),
-		}
-		serialize = append(serialize, ip)
-		netLayer = ip
-	} else {
-		if !fromAddr.Is4() {
-			panic("Cant send ipv4 to ipv6")
-		}
-
-		ip := &layers.IPv4{
-			Version:  4,
-			TTL:      64,
-			Protocol: layers.IPProtocolUDP,
-			SrcIP:    fromAddr.Unmap().AsSlice(),
-			DstIP:    toAddr.Unmap().AsSlice(),
-		}
-		serialize = append(serialize, ip)
-		netLayer = ip
-	}
-
-	udp := layers.UDP{
-		SrcPort: layers.UDPPort(fromPort),
-		DstPort: layers.UDPPort(toPort),
-	}
-	if err := udp.SetNetworkLayerForChecksum(netLayer); err != nil {
-		panic(err)
-	}
-
-	buffer := gopacket.NewSerializeBuffer()
-	opt := gopacket.SerializeOptions{
-		ComputeChecksums: true,
-		FixLengths:       true,
-	}
-
-	serialize = append(serialize, &udp, gopacket.Payload(data))
-	if err := gopacket.SerializeLayers(buffer, opt, serialize...); err != nil {
-		panic(err)
-	}
-
-	return buffer.Bytes()
+
+	return l
 }

e2e/leak_test.go

@@ -1,47 +0,0 @@
-//go:build e2e_testing
-// +build e2e_testing
-
-package e2e
-
-import (
-	"testing"
-	"time"
-
-	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/cert_test"
-	"github.com/slackhq/nebula/e2e/router"
-	"go.uber.org/goleak"
-)
-
-// TestNoGoroutineLeaks brings up two nebula instances, completes a tunnel,
-// stops both, and asserts no goroutines leak past the shutdown. goleak's
-// retry mechanism gives the wg.Wait()-driven goroutines a moment to drain
-// before failing the assertion.
-//
-// Intentionally NOT t.Parallel()'d: concurrent tests would have their own
-// goroutines running and trip the assertion.
-func TestNoGoroutineLeaks(t *testing.T) {
-	defer goleak.VerifyNone(t)
-
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", nil)
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", nil)
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	myControl.Stop()
-	theirControl.Stop()
-	r.RenderFlow()
-
-	// Settle period: Stop() is non-blocking; the wg-driven goroutines need
-	// a moment to drain. goleak retries internally too, but a short explicit
-	// settle reduces flakes when the suite is busy.
-	time.Sleep(50 * time.Millisecond)
-}

e2e/router/router.go

@@ -13,7 +13,6 @@ import (
 	"regexp"
 	"sort"
 	"sync"
-	"sync/atomic"
 	"testing"
 	"time"
 
@@ -25,19 +24,6 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-// outNatKey is the (from, to) pair used by outNat. Comparable struct, so it works as a map key without the
-// allocation cost of a string-concat key.
-type outNatKey struct {
-	from, to netip.AddrPort
-}
-
-// fannedPacket pairs a UDP TX packet with its source control so the router can route it after popping from
-// the fan-in channel.
-type fannedPacket struct {
-	from *nebula.Control
-	pkt  *udp.Packet
-}
-
 type R struct {
 	// Simple map of the ip:port registered on a control to the control
 	// Basically a router, right?
@@ -48,28 +34,12 @@ type R struct {
 
 	// A last used map, if an inbound packet hit the inNat map then
 	// all return packets should use the same last used inbound address for the outbound sender
-	outNat map[outNatKey]netip.AddrPort
+	// map[from address + ":" + to address] => ip:port to rewrite in the udp packet to receiver
+	outNat map[string]netip.AddrPort
 
 	// A map of vpn ip to the nebula control it belongs to
 	vpnControls map[netip.Addr]*nebula.Control
 
-	// Cached select infrastructure for RouteForAllUntilTxTun.
-	// The controls map is immutable after NewR so the cases are good for the test lifetime.
-	// We only rebuild if a different receiver is asked.
-	selRecvCtl *nebula.Control
-	selCases   []reflect.SelectCase
-	selCtls    []*nebula.Control
-
-	// Optional fan-in mode for hot-path benchmarks: one forwarder goroutine per control drains UDP TX into udpFanIn,
-	// so RouteForAllUntilTxTun can do a fixed 2-way native select instead of paying reflect.Select per call.
-	// Off by default (would otherwise interleave with tests that use GetFromUDP directly on the same control).
-	// Enabled by EnableFanIn.
-	udpFanIn  chan fannedPacket
-	stopFanIn chan struct{}
-	fanInWG   sync.WaitGroup
-	fanInMu   sync.Mutex
-	fanInOn   atomic.Bool
-
 	ignoreFlows []ignoreFlow
 	flow        []flowEntry
 
@@ -149,7 +119,7 @@ func NewR(t testing.TB, controls ...*nebula.Control) *R {
 		controls:     make(map[netip.AddrPort]*nebula.Control),
 		vpnControls:  make(map[netip.Addr]*nebula.Control),
 		inNat:        make(map[netip.AddrPort]*nebula.Control),
-		outNat:       make(map[outNatKey]netip.AddrPort),
+		outNat:       make(map[string]netip.AddrPort),
 		flow:         []flowEntry{},
 		ignoreFlows:  []ignoreFlow{},
 		fn:           filepath.Join("mermaid", fmt.Sprintf("%s.md", t.Name())),
@@ -183,10 +153,8 @@ func NewR(t testing.TB, controls ...*nebula.Control) *R {
 			case <-ctx.Done():
 				return
 			case <-clockSource.C:
-				r.Lock()
 				r.renderHostmaps("clock tick")
 				r.renderFlow()
-				r.Unlock()
 			}
 		}
 	}()
@@ -212,21 +180,15 @@ func (r *R) AddRoute(ip netip.Addr, port uint16, c *nebula.Control) {
 // RenderFlow renders the packet flow seen up until now and stops further automatic renders from happening.
 func (r *R) RenderFlow() {
 	r.cancelRender()
-	r.Lock()
-	defer r.Unlock()
 	r.renderFlow()
 }
 
 // CancelFlowLogs stops flow logs from being tracked and destroys any logs already collected
 func (r *R) CancelFlowLogs() {
 	r.cancelRender()
-	r.Lock()
 	r.flow = nil
-	r.Unlock()
 }
 
-// renderFlow writes the flow log to disk. Caller must hold r.Lock. renderFlow reads r.flow / r.additionalGraphs and
-// the *packet pointers stashed inside, all of which are mutated under the same lock by routing paths.
 func (r *R) renderFlow() {
 	if r.flow == nil {
 		return
@@ -472,157 +434,68 @@ func (r *R) RouteUntilTxTun(sender *nebula.Control, receiver *nebula.Control) []
 				panic("No control for udp tx " + a.String())
 			}
 			fp := r.unlockedInjectFlow(sender, c, p, false)
-			c.InjectUDPPacket(p) // copies internally; original is ours to release
+			c.InjectUDPPacket(p)
 			fp.WasReceived()
 			r.Unlock()
-			p.Release()
 		}
 	}
 }
 
-// RouteForAllUntilTxTun will route for everyone and return when a packet is seen on the receiver's tun.
-// If a control's UDP TX address can't be matched to a registered control, we panic.
-//
-// For allocation-sensitive callers (hot-path benchmarks, in particular relay
-// benches with 3+ controls), call EnableFanIn() first.
+// RouteForAllUntilTxTun will route for everyone and return when a packet is seen on receivers tun
+// If the router doesn't have the nebula controller for that address, we panic
 func (r *R) RouteForAllUntilTxTun(receiver *nebula.Control) []byte {
-	if r.fanInOn.Load() {
-		return r.routeFanIn(receiver)
-	}
-	return r.routeReflect(receiver)
-}
-
-// routeFanIn is the alloc-free path used when EnableFanIn is in effect.
-func (r *R) routeFanIn(receiver *nebula.Control) []byte {
-	tunTx := receiver.GetTunTxChan()
-	for {
-		select {
-		case p := <-tunTx:
-			r.Lock()
-			if r.flow != nil {
-				np := udp.Packet{Data: make([]byte, len(p))}
-				copy(np.Data, p)
-				r.unlockedInjectFlow(receiver, receiver, &np, true)
-			}
-			r.Unlock()
-			return p
-		case fp := <-r.udpFanIn:
-			r.routeUDP(fp.from, fp.pkt)
-		}
-	}
-}
-
-// routeReflect is the default reflect.Select-based path. Pays the boxing allocation per call but doesn't interfere
-// with tests that pull packets directly from controls' UDP TX channels via GetFromUDP.
-func (r *R) routeReflect(receiver *nebula.Control) []byte {
-	sc, cm := r.selectCasesFor(receiver)
-	for {
-		x, rx, _ := reflect.Select(sc)
-		if x == 0 {
-			p := rx.Interface().([]byte)
-			r.Lock()
-			if r.flow != nil {
-				np := udp.Packet{Data: make([]byte, len(p))}
-				copy(np.Data, p)
-				r.unlockedInjectFlow(cm[x], cm[x], &np, true)
-			}
-			r.Unlock()
-			return p
-		}
-		r.routeUDP(cm[x], rx.Interface().(*udp.Packet))
-	}
-}
-
-// EnableFanIn switches RouteForAllUntilTxTun to the alloc-free fan-in path.
-// One forwarder goroutine per registered control drains UDP TX into a shared channel that RouteForAllUntilTxTun selects
-// on alongside the receiver's TUN TX channel.
-func (r *R) EnableFanIn() {
-	r.fanInMu.Lock()
-	defer r.fanInMu.Unlock()
-	if r.fanInOn.Load() {
-		return
-	}
-	r.udpFanIn = make(chan fannedPacket, 32)
-	r.stopFanIn = make(chan struct{})
-	for _, c := range r.controls {
-		r.startFanInWorker(c)
-	}
-	r.fanInOn.Store(true)
-	r.t.Cleanup(r.stopFanInWorkers)
-}
-
-// startFanInWorker spawns a goroutine that drains c's UDP TX into r.udpFanIn.
-func (r *R) startFanInWorker(c *nebula.Control) {
-	r.fanInWG.Add(1)
-	udpTx := c.GetUDPTxChan()
-	go func() {
-		defer r.fanInWG.Done()
-		for {
-			select {
-			case <-r.stopFanIn:
-				return
-			case p := <-udpTx:
-				select {
-				case <-r.stopFanIn:
-					p.Release()
-					return
-				case r.udpFanIn <- fannedPacket{from: c, pkt: p}:
-				}
-			}
-		}
-	}()
-}
-
-// stopFanInWorkers signals the fan-in goroutines to exit and waits for them.
-func (r *R) stopFanInWorkers() {
-	r.fanInMu.Lock()
-	wasOn := r.fanInOn.Swap(false)
-	r.fanInMu.Unlock()
-	if !wasOn {
-		return
-	}
-	close(r.stopFanIn)
-	r.fanInWG.Wait()
-}
-
-// routeUDP forwards a UDP TX packet from the named source control to the destination control derived from p.To,
-// releasing the source packet after InjectUDPPacket has copied its bytes into a fresh pool slot.
-func (r *R) routeUDP(from *nebula.Control, p *udp.Packet) {
-	r.Lock()
-	defer r.Unlock()
-	a := from.GetUDPAddr()
-	c := r.getControl(a, p.To, p)
-	if c == nil {
-		panic(fmt.Sprintf("No control for udp tx %s", p.To))
-	}
-	fp := r.unlockedInjectFlow(from, c, p, false)
-	c.InjectUDPPacket(p) // copies internally; original is ours to release
-	fp.WasReceived()
-	p.Release()
-}
-
-// selectCasesFor returns the SelectCase array used by routeReflect: one slot for the receiver's TUN TX channel followed
-// by one per control's UDP TX channel. Cached for the test lifetime, only rebuilt if the receiver changes.
-func (r *R) selectCasesFor(receiver *nebula.Control) ([]reflect.SelectCase, []*nebula.Control) {
-	r.Lock()
-	defer r.Unlock()
-	if r.selRecvCtl == receiver && r.selCases != nil {
-		return r.selCases, r.selCtls
-	}
 	sc := make([]reflect.SelectCase, len(r.controls)+1)
 	cm := make([]*nebula.Control, len(r.controls)+1)
-	sc[0] = reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(receiver.GetTunTxChan())}
-	cm[0] = receiver
-	i := 1
+
+	i := 0
+	sc[i] = reflect.SelectCase{
+		Dir:  reflect.SelectRecv,
+		Chan: reflect.ValueOf(receiver.GetTunTxChan()),
+		Send: reflect.Value{},
+	}
+	cm[i] = receiver
+
+	i++
 	for _, c := range r.controls {
-		sc[i] = reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(c.GetUDPTxChan())}
+		sc[i] = reflect.SelectCase{
+			Dir:  reflect.SelectRecv,
+			Chan: reflect.ValueOf(c.GetUDPTxChan()),
+			Send: reflect.Value{},
+		}
+
 		cm[i] = c
 		i++
 	}
-	r.selRecvCtl = receiver
-	r.selCases = sc
-	r.selCtls = cm
-	return sc, cm
+
+	for {
+		x, rx, _ := reflect.Select(sc)
+		r.Lock()
+
+		if x == 0 {
+			// we are the tun tx, we can exit
+			p := rx.Interface().([]byte)
+			np := udp.Packet{Data: make([]byte, len(p))}
+			copy(np.Data, p)
+
+			r.unlockedInjectFlow(cm[x], cm[x], &np, true)
+			r.Unlock()
+			return p
+
+		} else {
+			// we are a udp tx, route and continue
+			p := rx.Interface().(*udp.Packet)
+			a := cm[x].GetUDPAddr()
+			c := r.getControl(a, p.To, p)
+			if c == nil {
+				r.Unlock()
+				panic(fmt.Sprintf("No control for udp tx %s", p.To))
+			}
+			fp := r.unlockedInjectFlow(cm[x], c, p, false)
+			c.InjectUDPPacket(p)
+			fp.WasReceived()
+		}
+		r.Unlock()
+	}
 }
 
 // RouteExitFunc will call the whatDo func with each udp packet from sender.
@@ -649,7 +522,6 @@ func (r *R) RouteExitFunc(sender *nebula.Control, whatDo ExitFunc) {
 		switch e {
 		case ExitNow:
 			r.Unlock()
-			p.Release()
 			return
 
 		case RouteAndExit:
@@ -657,7 +529,6 @@ func (r *R) RouteExitFunc(sender *nebula.Control, whatDo ExitFunc) {
 			receiver.InjectUDPPacket(p)
 			fp.WasReceived()
 			r.Unlock()
-			p.Release()
 			return
 
 		case KeepRouting:
@@ -670,7 +541,6 @@ func (r *R) RouteExitFunc(sender *nebula.Control, whatDo ExitFunc) {
 		}
 
 		r.Unlock()
-		p.Release()
 	}
 }
 
@@ -771,7 +641,6 @@ func (r *R) RouteForAllExitFunc(whatDo ExitFunc) {
 		switch e {
 		case ExitNow:
 			r.Unlock()
-			p.Release()
 			return
 
 		case RouteAndExit:
@@ -779,7 +648,6 @@ func (r *R) RouteForAllExitFunc(whatDo ExitFunc) {
 			receiver.InjectUDPPacket(p)
 			fp.WasReceived()
 			r.Unlock()
-			p.Release()
 			return
 
 		case KeepRouting:
@@ -791,7 +659,6 @@ func (r *R) RouteForAllExitFunc(whatDo ExitFunc) {
 			panic(fmt.Sprintf("Unknown exitFunc return: %v", e))
 		}
 		r.Unlock()
-		p.Release()
 	}
 }
 
@@ -835,20 +702,19 @@ func (r *R) FlushAll() {
 		}
 		receiver.InjectUDPPacket(p)
 		r.Unlock()
-		p.Release()
 	}
 }
 
 // getControl performs or seeds NAT translation and returns the control for toAddr, p from fields may change
 // This is an internal router function, the caller must hold the lock
 func (r *R) getControl(fromAddr, toAddr netip.AddrPort, p *udp.Packet) *nebula.Control {
-	if newAddr, ok := r.outNat[outNatKey{from: fromAddr, to: toAddr}]; ok {
+	if newAddr, ok := r.outNat[fromAddr.String()+":"+toAddr.String()]; ok {
 		p.From = newAddr
 	}
 
 	c, ok := r.inNat[toAddr]
 	if ok {
-		r.outNat[outNatKey{from: c.GetUDPAddr(), to: fromAddr}] = toAddr
+		r.outNat[c.GetUDPAddr().String()+":"+fromAddr.String()] = toAddr
 		return c
 	}
 

e2e/sshd_test.go

@@ -1,125 +0,0 @@
-//go:build e2e_testing
-// +build e2e_testing
-
-package e2e
-
-import (
-	"crypto/ed25519"
-	"crypto/rand"
-	"encoding/pem"
-	"net"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/cert_test"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"golang.org/x/crypto/ssh"
-)
-
-func TestSSHDLifecycle(t *testing.T) {
-	// TestSSHDLifecycle exercises the in-process sshd through several config reloads and a Control.Stop.
-	ca, _, caKey, _ := cert_test.NewTestCaCert(
-		cert.Version1, cert.Curve_CURVE25519,
-		time.Now(), time.Now().Add(10*time.Minute),
-		nil, nil, []string{},
-	)
-
-	hostKeyPEM := generateSSHHostKey(t)
-	clientSigner, clientAuthKey := generateSSHClientKey(t)
-	sshdAddr := allocLoopbackPort(t)
-
-	overrides := m{
-		"sshd": m{
-			"enabled":  true,
-			"listen":   sshdAddr,
-			"host_key": hostKeyPEM,
-			"authorized_users": []m{{
-				"user": "tester",
-				"keys": []string{clientAuthKey},
-			}},
-		},
-	}
-	control, _, _, _ := newSimpleServer(cert.Version1, ca, caKey, "sshd-test", "10.222.0.1/24", overrides)
-	control.Start()
-	t.Cleanup(func() { control.Stop() })
-
-	// sshd binds in a goroutine after Start returns; wait for it.
-	require.Eventually(t, func() bool { return canDial(sshdAddr) }, 2*time.Second, 25*time.Millisecond,
-		"sshd never started listening")
-
-	for i := 1; i <= 3; i++ {
-		out := sshExecReload(t, sshdAddr, clientSigner)
-		assert.Contains(t, out, "Reloading config", "reload cycle %d", i)
-		require.Eventually(t, func() bool { return canDial(sshdAddr) }, 2*time.Second, 25*time.Millisecond,
-			"sshd not listening after reload cycle %d", i)
-	}
-
-	control.Stop()
-	require.Eventually(t, func() bool { return !canDial(sshdAddr) }, 2*time.Second, 25*time.Millisecond,
-		"sshd still listening after Control.Stop")
-}
-
-func canDial(addr string) bool {
-	c, err := net.DialTimeout("tcp", addr, 100*time.Millisecond)
-	if err != nil {
-		return false
-	}
-	_ = c.Close()
-	return true
-}
-
-// allocLoopbackPort grabs an unused TCP port on 127.0.0.1, closes it, and returns the address. There
-// is a small race between releasing the port and the sshd reclaiming it; in practice the OS keeps the
-// port available long enough for the test to bind it.
-func allocLoopbackPort(t *testing.T) string {
-	t.Helper()
-	l, err := net.Listen("tcp", "127.0.0.1:0")
-	require.NoError(t, err)
-	addr := l.Addr().String()
-	require.NoError(t, l.Close())
-	return addr
-}
-
-func generateSSHHostKey(t *testing.T) string {
-	t.Helper()
-	_, priv, err := ed25519.GenerateKey(rand.Reader)
-	require.NoError(t, err)
-	block, err := ssh.MarshalPrivateKey(priv, "nebula-e2e-host")
-	require.NoError(t, err)
-	return string(pem.EncodeToMemory(block))
-}
-
-func generateSSHClientKey(t *testing.T) (ssh.Signer, string) {
-	t.Helper()
-	_, priv, err := ed25519.GenerateKey(rand.Reader)
-	require.NoError(t, err)
-	signer, err := ssh.NewSignerFromKey(priv)
-	require.NoError(t, err)
-	auth := strings.TrimSpace(string(ssh.MarshalAuthorizedKey(signer.PublicKey())))
-	return signer, auth
-}
-
-func sshExecReload(t *testing.T, addr string, signer ssh.Signer) string {
-	t.Helper()
-	cfg := &ssh.ClientConfig{
-		User:            "tester",
-		Auth:            []ssh.AuthMethod{ssh.PublicKeys(signer)},
-		HostKeyCallback: ssh.InsecureIgnoreHostKey(),
-		Timeout:         2 * time.Second,
-	}
-	client, err := ssh.Dial("tcp", addr, cfg)
-	require.NoError(t, err)
-	defer client.Close()
-
-	sess, err := client.NewSession()
-	require.NoError(t, err)
-	defer sess.Close()
-
-	// reload tears the channel down before sending exit-status, so Output returns an error on the
-	// channel close. The output buffer still has whatever the reload callback wrote before that.
-	out, _ := sess.Output("reload")
-	return string(out)
-}

e2e/tunnels_test.go

@@ -4,7 +4,6 @@
 package e2e
 
 import (
-	"fmt"
 	"net/netip"
 	"testing"
 	"time"
@@ -12,15 +11,9 @@ import (
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/cert_test"
 	"github.com/slackhq/nebula/e2e/router"
-	"github.com/slackhq/nebula/header"
-	"github.com/slackhq/nebula/udp"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"gopkg.in/yaml.v3"
 )
 
 func TestDropInactiveTunnels(t *testing.T) {
-	t.Parallel()
 	// The goal of this test is to ensure the shortest inactivity timeout will close the tunnel on both sides
 	// under ideal conditions
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
@@ -64,270 +57,7 @@ func TestDropInactiveTunnels(t *testing.T) {
 	theirControl.Stop()
 }
 
-func TestCertUpgrade(t *testing.T) {
-	t.Parallel()
-	// The goal of this test is to ensure the shortest inactivity timeout will close the tunnel on both sides
-	// under ideal conditions
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	caB, err := ca.MarshalPEM()
-	if err != nil {
-		panic(err)
-	}
-	ca2, _, caKey2, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-
-	ca2B, err := ca2.MarshalPEM()
-	if err != nil {
-		panic(err)
-	}
-	caStr := fmt.Sprintf("%s\n%s", caB, ca2B)
-
-	myCert, _, myPrivKey, _ := cert_test.NewTestCert(cert.Version1, cert.Curve_CURVE25519, ca, caKey, "me", time.Now(), time.Now().Add(5*time.Minute), []netip.Prefix{netip.MustParsePrefix("10.128.0.1/24")}, nil, []string{})
-	_, myCert2Pem := cert_test.NewTestCertDifferentVersion(myCert, cert.Version2, ca2, caKey2)
-
-	theirCert, _, theirPrivKey, _ := cert_test.NewTestCert(cert.Version1, cert.Curve_CURVE25519, ca, caKey, "them", time.Now(), time.Now().Add(5*time.Minute), []netip.Prefix{netip.MustParsePrefix("10.128.0.2/24")}, nil, []string{})
-	theirCert2, _ := cert_test.NewTestCertDifferentVersion(theirCert, cert.Version2, ca2, caKey2)
-
-	myControl, myVpnIpNet, myUdpAddr, myC := newServer([]cert.Certificate{ca, ca2}, []cert.Certificate{myCert}, myPrivKey, m{})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newServer([]cert.Certificate{ca, ca2}, []cert.Certificate{theirCert, theirCert2}, theirPrivKey, m{})
-
-	// Share our underlay information
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	// Start the servers
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-
-	r.Log("Assert the tunnel between me and them works")
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-	r.Log("yay")
-	//todo ???
-	time.Sleep(1 * time.Second)
-	r.FlushAll()
-
-	mc := m{
-		"pki": m{
-			"ca":   caStr,
-			"cert": string(myCert2Pem),
-			"key":  string(myPrivKey),
-		},
-		//"tun": m{"disabled": true},
-		"firewall": myC.Settings["firewall"],
-		//"handshakes": m{
-		//	"try_interval": "1s",
-		//},
-		"listen":  myC.Settings["listen"],
-		"logging": myC.Settings["logging"],
-		"timers":  myC.Settings["timers"],
-	}
-
-	cb, err := yaml.Marshal(mc)
-	if err != nil {
-		panic(err)
-	}
-
-	r.Logf("reload new v2-only config")
-	err = myC.ReloadConfigString(string(cb))
-	assert.NoError(t, err)
-	r.Log("yay, spin until their sees it")
-	waitStart := time.Now()
-	for {
-		assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-		c := theirControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false)
-		if c == nil {
-			r.Log("nil")
-		} else {
-			version := c.Cert.Version()
-			r.Logf("version %d", version)
-			if version == cert.Version2 {
-				break
-			}
-		}
-		since := time.Since(waitStart)
-		if since > time.Second*10 {
-			t.Fatal("Cert should be new by now")
-		}
-		time.Sleep(time.Second)
-	}
-
-	r.RenderHostmaps("Final hostmaps", myControl, theirControl)
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestCertDowngrade(t *testing.T) {
-	t.Parallel()
-	// The goal of this test is to ensure the shortest inactivity timeout will close the tunnel on both sides
-	// under ideal conditions
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	caB, err := ca.MarshalPEM()
-	if err != nil {
-		panic(err)
-	}
-	ca2, _, caKey2, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-
-	ca2B, err := ca2.MarshalPEM()
-	if err != nil {
-		panic(err)
-	}
-	caStr := fmt.Sprintf("%s\n%s", caB, ca2B)
-
-	myCert, _, myPrivKey, myCertPem := cert_test.NewTestCert(cert.Version1, cert.Curve_CURVE25519, ca, caKey, "me", time.Now(), time.Now().Add(5*time.Minute), []netip.Prefix{netip.MustParsePrefix("10.128.0.1/24")}, nil, []string{})
-	myCert2, _ := cert_test.NewTestCertDifferentVersion(myCert, cert.Version2, ca2, caKey2)
-
-	theirCert, _, theirPrivKey, _ := cert_test.NewTestCert(cert.Version1, cert.Curve_CURVE25519, ca, caKey, "them", time.Now(), time.Now().Add(5*time.Minute), []netip.Prefix{netip.MustParsePrefix("10.128.0.2/24")}, nil, []string{})
-	theirCert2, _ := cert_test.NewTestCertDifferentVersion(theirCert, cert.Version2, ca2, caKey2)
-
-	myControl, myVpnIpNet, myUdpAddr, myC := newServer([]cert.Certificate{ca, ca2}, []cert.Certificate{myCert2}, myPrivKey, m{})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newServer([]cert.Certificate{ca, ca2}, []cert.Certificate{theirCert, theirCert2}, theirPrivKey, m{})
-
-	// Share our underlay information
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	// Start the servers
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-
-	r.Log("Assert the tunnel between me and them works")
-	//assertTunnel(t, theirVpnIpNet[0].Addr(), myVpnIpNet[0].Addr(), theirControl, myControl, r)
-	//r.Log("yay")
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-	r.Log("yay")
-	//todo ???
-	time.Sleep(1 * time.Second)
-	r.FlushAll()
-
-	mc := m{
-		"pki": m{
-			"ca":   caStr,
-			"cert": string(myCertPem),
-			"key":  string(myPrivKey),
-		},
-		"firewall": myC.Settings["firewall"],
-		"listen":   myC.Settings["listen"],
-		"logging":  myC.Settings["logging"],
-		"timers":   myC.Settings["timers"],
-	}
-
-	cb, err := yaml.Marshal(mc)
-	if err != nil {
-		panic(err)
-	}
-
-	r.Logf("reload new v1-only config")
-	err = myC.ReloadConfigString(string(cb))
-	assert.NoError(t, err)
-	r.Log("yay, spin until their sees it")
-	waitStart := time.Now()
-	for {
-		assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-		c := theirControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false)
-		c2 := myControl.GetHostInfoByVpnAddr(theirVpnIpNet[0].Addr(), false)
-		if c == nil || c2 == nil {
-			r.Log("nil")
-		} else {
-			version := c.Cert.Version()
-			theirVersion := c2.Cert.Version()
-			r.Logf("version %d,%d", version, theirVersion)
-			if version == cert.Version1 {
-				break
-			}
-		}
-		since := time.Since(waitStart)
-		if since > time.Second*5 {
-			r.Log("it is unusual that the cert is not new yet, but not a failure yet")
-		}
-		if since > time.Second*10 {
-			r.Log("wtf")
-			t.Fatal("Cert should be new by now")
-		}
-		time.Sleep(time.Second)
-	}
-
-	r.RenderHostmaps("Final hostmaps", myControl, theirControl)
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
-func TestCertMismatchCorrection(t *testing.T) {
-	t.Parallel()
-	// The goal of this test is to ensure the shortest inactivity timeout will close the tunnel on both sides
-	// under ideal conditions
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	ca2, _, caKey2, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-
-	myCert, _, myPrivKey, _ := cert_test.NewTestCert(cert.Version1, cert.Curve_CURVE25519, ca, caKey, "me", time.Now(), time.Now().Add(5*time.Minute), []netip.Prefix{netip.MustParsePrefix("10.128.0.1/24")}, nil, []string{})
-	myCert2, _ := cert_test.NewTestCertDifferentVersion(myCert, cert.Version2, ca2, caKey2)
-
-	theirCert, _, theirPrivKey, _ := cert_test.NewTestCert(cert.Version1, cert.Curve_CURVE25519, ca, caKey, "them", time.Now(), time.Now().Add(5*time.Minute), []netip.Prefix{netip.MustParsePrefix("10.128.0.2/24")}, nil, []string{})
-	theirCert2, _ := cert_test.NewTestCertDifferentVersion(theirCert, cert.Version2, ca2, caKey2)
-
-	myControl, myVpnIpNet, myUdpAddr, _ := newServer([]cert.Certificate{ca, ca2}, []cert.Certificate{myCert2}, myPrivKey, m{})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newServer([]cert.Certificate{ca, ca2}, []cert.Certificate{theirCert, theirCert2}, theirPrivKey, m{})
-
-	// Share our underlay information
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	// Start the servers
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-	defer r.RenderFlow()
-
-	r.Log("Assert the tunnel between me and them works")
-	//assertTunnel(t, theirVpnIpNet[0].Addr(), myVpnIpNet[0].Addr(), theirControl, myControl, r)
-	//r.Log("yay")
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-	r.Log("yay")
-	//todo ???
-	time.Sleep(1 * time.Second)
-	r.FlushAll()
-
-	waitStart := time.Now()
-	for {
-		assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-		c := theirControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false)
-		c2 := myControl.GetHostInfoByVpnAddr(theirVpnIpNet[0].Addr(), false)
-		if c == nil || c2 == nil {
-			r.Log("nil")
-		} else {
-			version := c.Cert.Version()
-			theirVersion := c2.Cert.Version()
-			r.Logf("version %d,%d", version, theirVersion)
-			if version == theirVersion {
-				break
-			}
-		}
-		since := time.Since(waitStart)
-		if since > time.Second*5 {
-			r.Log("wtf")
-		}
-		if since > time.Second*10 {
-			r.Log("wtf")
-			t.Fatal("Cert should be new by now")
-		}
-		time.Sleep(time.Second)
-	}
-
-	r.RenderHostmaps("Final hostmaps", myControl, theirControl)
-
-	myControl.Stop()
-	theirControl.Stop()
-}
-
 func TestCrossStackRelaysWork(t *testing.T) {
-	t.Parallel()
 	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
 	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version2, ca, caKey, "me     ", "10.128.0.1/24,fc00::1/64", m{"relay": m{"use_relays": true}})
 	relayControl, relayVpnIpNet, relayUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "relay  ", "10.128.0.128/24,fc00::128/64", m{"relay": m{"am_relay": true}})
@@ -356,14 +86,14 @@ func TestCrossStackRelaysWork(t *testing.T) {
 	theirControl.Start()
 
 	t.Log("Trigger a handshake from me to them via the relay")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnV6.Addr(), 80, myVpnV6.Addr(), 80, []byte("Hi from me")))
+	myControl.InjectTunUDPPacket(theirVpnV6.Addr(), 80, myVpnV6.Addr(), 80, []byte("Hi from me"))
 
 	p := r.RouteForAllUntilTxTun(theirControl)
 	r.Log("Assert the tunnel works")
 	assertUdpPacket(t, []byte("Hi from me"), p, myVpnV6.Addr(), theirVpnV6.Addr(), 80, 80)
 
 	t.Log("reply?")
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnV6.Addr(), 80, theirVpnV6.Addr(), 80, []byte("Hi from them")))
+	theirControl.InjectTunUDPPacket(myVpnV6.Addr(), 80, theirVpnV6.Addr(), 80, []byte("Hi from them"))
 	p = r.RouteForAllUntilTxTun(myControl)
 	assertUdpPacket(t, []byte("Hi from them"), p, theirVpnV6.Addr(), myVpnV6.Addr(), 80, 80)
 
@@ -373,201 +103,3 @@ func TestCrossStackRelaysWork(t *testing.T) {
 	//theirControl.Stop()
 	//relayControl.Stop()
 }
-
-// TestRelayReplayProtection asserts that a relay (forwarding-type) node rejects
-// replayed relay frames. A captured relay frame, re-injected with the same
-// message counter, must be dropped by the replay window rather than re-forwarded
-// to the relay target. Before the fix, handleOutsideRelayPacket authenticated the
-// frame but never advanced the replay window, so every replay was re-forwarded.
-func TestRelayReplayProtection(t *testing.T) {
-	t.Parallel()
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version2, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, _, _ := newSimpleServer(cert.Version2, ca, caKey, "me     ", "10.128.0.1/24,fc00::1/64", m{"relay": m{"use_relays": true}})
-	relayControl, relayVpnIpNet, relayUdpAddr, _ := newSimpleServer(cert.Version2, ca, caKey, "relay  ", "10.128.0.128/24,fc00::128/64", m{"relay": m{"am_relay": true}})
-	theirUdp := netip.MustParseAddrPort("10.0.0.2:4242")
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServerWithUdp(cert.Version2, ca, caKey, "them   ", "fc00::2/64", theirUdp, m{"relay": m{"use_relays": true}})
-
-	myVpnV6 := myVpnIpNet[1]
-	relayVpnV4 := relayVpnIpNet[0]
-	relayVpnV6 := relayVpnIpNet[1]
-	theirVpnV6 := theirVpnIpNet[0]
-
-	// Teach me how to reach the relay and that them is reachable via the relay
-	myControl.InjectLightHouseAddr(relayVpnV4.Addr(), relayUdpAddr)
-	myControl.InjectLightHouseAddr(relayVpnV6.Addr(), relayUdpAddr)
-	myControl.InjectRelays(theirVpnV6.Addr(), []netip.Addr{relayVpnV6.Addr()})
-	relayControl.InjectLightHouseAddr(theirVpnV6.Addr(), theirUdpAddr)
-
-	r := router.NewR(t, myControl, relayControl, theirControl)
-	defer r.RenderFlow()
-
-	myControl.Start()
-	relayControl.Start()
-	theirControl.Start()
-
-	// Establish the relayed tunnel in both directions so all handshakes complete.
-	t.Log("Establish the relayed tunnel")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnV6.Addr(), 80, myVpnV6.Addr(), 80, []byte("Hi from me")))
-	p := r.RouteForAllUntilTxTun(theirControl)
-	assertUdpPacket(t, []byte("Hi from me"), p, myVpnV6.Addr(), theirVpnV6.Addr(), 80, 80)
-	theirControl.InjectTunPacket(BuildTunUDPPacket(myVpnV6.Addr(), 80, theirVpnV6.Addr(), 80, []byte("Hi from them")))
-	p = r.RouteForAllUntilTxTun(myControl)
-	assertUdpPacket(t, []byte("Hi from them"), p, theirVpnV6.Addr(), myVpnV6.Addr(), 80, 80)
-
-	// Drain anything still queued on me's UDP tx so the next packet we pull is the
-	// relay frame we are about to generate.
-	for myControl.GetFromUDP(false) != nil {
-	}
-
-	// Capture a single legitimate relay frame that me transmits toward the relay.
-	t.Log("Capture a relay frame from me -> relay")
-	myControl.InjectTunPacket(BuildTunUDPPacket(theirVpnV6.Addr(), 80, myVpnV6.Addr(), 80, []byte("replay me")))
-	relayFrame := myControl.GetFromUDP(true)
-	require.Equal(t, relayUdpAddr, relayFrame.To, "captured frame should be addressed to the relay")
-	var fh header.H
-	require.NoError(t, fh.Parse(relayFrame.Data))
-	require.Equal(t, header.Message, fh.Type)
-	require.Equal(t, header.MessageRelay, fh.Subtype)
-
-	// drainForwards counts relay frames the relay forwards toward them within the
-	// settle window. We match on destination + (Message, MessageRelay) so the
-	// relay's own direct traffic to them can't be miscounted.
-	drainForwards := func(settle time.Duration) int {
-		ch := relayControl.GetUDPTxChan()
-		count := 0
-		for {
-			select {
-			case pkt := <-ch:
-				var ph header.H
-				if pkt.To == theirUdpAddr && ph.Parse(pkt.Data) == nil &&
-					ph.Type == header.Message && ph.Subtype == header.MessageRelay {
-					count++
-				}
-				pkt.Release()
-			case <-time.After(settle):
-				return count
-			}
-		}
-	}
-
-	// First delivery of the captured frame: the relay should forward it once.
-	t.Log("Deliver the captured frame once; relay forwards it to them")
-	relayControl.InjectUDPPacket(relayFrame)
-	require.Equal(t, 1, drainForwards(200*time.Millisecond), "relay should forward the first, legitimate copy")
-
-	// Replay the exact same frame several times. A correct replay window rejects
-	// these duplicates so the relay forwards none of them.
-	t.Log("Replay the captured frame; relay must drop the duplicates")
-	const replays = 3
-	for i := 0; i < replays; i++ {
-		relayControl.InjectUDPPacket(relayFrame)
-	}
-	forwarded := drainForwards(200 * time.Millisecond)
-	assert.Equal(t, 0, forwarded, "relay re-forwarded %d/%d replayed relay frames; replay protection is ineffective on relay tunnels", forwarded, replays)
-
-	r.RenderHostmaps("Final hostmaps", myControl, relayControl, theirControl)
-}
-
-func TestCloseTunnelAuthenticated(t *testing.T) {
-	t.Parallel()
-	ca, _, caKey, _ := cert_test.NewTestCaCert(cert.Version1, cert.Curve_CURVE25519, time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
-	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "me", "10.128.0.1/24", m{"tunnels": m{"drop_inactive": true, "inactivity_timeout": "5s"}})
-	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(cert.Version1, ca, caKey, "them", "10.128.0.2/24", m{"tunnels": m{"drop_inactive": true, "inactivity_timeout": "10m"}})
-
-	// Share our underlay information
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-
-	// Start the servers
-	myControl.Start()
-	theirControl.Start()
-
-	r := router.NewR(t, myControl, theirControl)
-
-	r.Log("Assert the tunnel between me and them works")
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-
-	r.Log("Close the tunnel")
-	myControl.CloseTunnel(theirVpnIpNet[0].Addr(), false)
-	r.FlushAll()
-
-	waitStart := time.Now()
-	for {
-		myIndexes := len(myControl.GetHostmap().Indexes)
-		theirIndexes := len(theirControl.GetHostmap().Indexes)
-		if myIndexes == 0 && theirIndexes == 0 {
-			break
-		}
-
-		since := time.Since(waitStart)
-		r.Logf("my tunnels: %v; their tunnels: %v; duration: %v", myIndexes, theirIndexes, since)
-		if since > time.Second*6 {
-			t.Fatal("Tunnel should have been declared inactive after 2 seconds and before 6 seconds")
-		}
-
-		time.Sleep(1 * time.Second)
-		//r.FlushAll()
-	}
-
-	r.Logf("Happy path success, tunnels were dropped within %v", time.Since(waitStart))
-
-	myControl.InjectLightHouseAddr(theirVpnIpNet[0].Addr(), theirUdpAddr)
-	theirControl.InjectLightHouseAddr(myVpnIpNet[0].Addr(), myUdpAddr)
-	r.Log("Assert another tunnel between me and them works")
-	assertTunnel(t, myVpnIpNet[0].Addr(), theirVpnIpNet[0].Addr(), myControl, theirControl, r)
-	hi := myControl.GetHostInfoByVpnAddr(theirVpnIpNet[0].Addr(), false)
-	if hi == nil {
-		t.Fatal("There is no hostinfo for this tunnel")
-	}
-	myHi := theirControl.GetHostInfoByVpnAddr(myVpnIpNet[0].Addr(), false)
-	if myHi == nil {
-		t.Fatal("There is no hostinfo for my tunnel")
-	}
-	r.Log("It does")
-
-	buf := make([]byte, 1024)
-	hdr := header.H{
-		Version:        1,
-		Type:           header.CloseTunnel,
-		Subtype:        0,
-		Reserved:       0,
-		RemoteIndex:    hi.RemoteIndex,
-		MessageCounter: 5,
-	}
-	out, err := hdr.Encode(buf)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	pkt := &udp.Packet{
-		To:   hi.CurrentRemote,
-		From: myHi.CurrentRemote,
-		Data: out,
-	}
-	r.InjectUDPPacket(myControl, theirControl, pkt)
-	r.Log("Injected bogus close tunnel. Let's see!")
-	waitStart = time.Now()
-	for {
-		myIndexes := len(myControl.GetHostmap().Indexes)
-		theirIndexes := len(theirControl.GetHostmap().Indexes)
-		if myIndexes == 0 {
-			t.Fatal("myIndexes should not be 0")
-		}
-		if theirIndexes == 0 {
-			t.Fatal("theirIndexes should not be 0, they should have rejected this bogus packet")
-		}
-
-		since := time.Since(waitStart)
-		r.Logf("my tunnels: %v; their tunnels: %v; duration: %v", myIndexes, theirIndexes, since)
-		if since > time.Second*4 {
-			t.Log("The tunnel would have been gone by now")
-			break
-		}
-
-		time.Sleep(1 * time.Second)
-		r.FlushAll()
-	}
-
-	myControl.Stop()
-	theirControl.Stop()
-}

examples/config.yml

@@ -138,24 +138,12 @@ listen:
   # max, net.core.rmem_max and net.core.wmem_max
   #read_buffer: 10485760
   #write_buffer: 10485760
-
-  # On Windows only
-  # When true, Nebula installs a WFP (Windows Filtering Platform) PERMIT filter scoped to UDP at the listener port.
-  # WFP sits below Windows Defender Firewall, so this lets peer handshakes reach Nebula's outside socket regardless
-  # of WDF's inbound rules.
-  # Default true; set to false to leave WDF in charge of inbound decisions on the listener port. Not reloadable.
-  #windows_bypass_wdf: true
-
   # By default, Nebula replies to packets it has no tunnel for with a "recv_error" packet. This packet helps speed up reconnection
   # in the case that Nebula on either side did not shut down cleanly. This response can be abused as a way to discover if Nebula is running
   # on a host though. This option lets you configure if you want to send "recv_error" packets always, never, or only to private network remotes.
   # valid values: always, never, private
   # This setting is reloadable.
   #send_recv_error: always
-  # Similar to send_recv_error, this option lets you configure if you want to accept "recv_error" packets from remote hosts.
-  # valid values: always, never, private
-  # This setting is reloadable.
-  #accept_recv_error: always
   # The so_sock option is a Linux-specific feature that allows all outgoing Nebula packets to be tagged with a specific identifier.
   # This tagging enables IP rule-based filtering. For example, it supports 0.0.0.0/0 unsafe_routes,
   # allowing for more precise routing decisions based on the packet tags. Default is 0 meaning no mark is set.
@@ -171,21 +159,17 @@ listen:
 
 punchy:
   # Continues to punch inbound/outbound at a regular interval to avoid expiration of firewall nat mappings
-  # This setting is reloadable.
   punch: true
 
   # respond means that a node you are trying to reach will connect back out to you if your hole punching fails
   # this is extremely useful if one node is behind a difficult nat, such as a symmetric NAT
   # Default is false
-  # This setting is reloadable.
   #respond: true
 
   # delays a punch response for misbehaving NATs, default is 1 second.
-  # This setting is reloadable.
   #delay: 1s
 
   # set the delay before attempting punchy.respond. Default is 5 seconds. respond must be true to take effect.
-  # This setting is reloadable.
   #respond_delay: 5s
 
 # Cipher allows you to choose between the available ciphers for your network. Options are chachapoly or aes
@@ -216,12 +200,6 @@ punchy:
   # Trusted SSH CA public keys. These are the public keys of the CAs that are allowed to sign SSH keys for access.
   #trusted_cas:
     #- "ssh public key string"
-  # sandbox_dir restricts file paths for profiling commands (start-cpu-profile, save-heap-profile,
-  # save-mutex-profile) to the specified directory. Relative paths will be resolved within this directory,
-  # and absolute paths outside of it will be rejected. Default is $TMP/nebula-debug.
-  # The directory is NOT automatically created.
-  # Overriding this to "" is the same as "/" and will allow overwriting any path on the host.
-  #sandbox_dir: /var/tmp/nebula-debug
 
 # EXPERIMENTAL: relay support for networks that can't establish direct connections.
 relay:
@@ -294,24 +272,6 @@ tun:
     #  metric: 100
     #  install: true
 
-  # On Windows only, sets the network category of the nebula interface. Without this, Windows often
-  # leaves the network as "Unidentified" and treats it as Public, which makes the host firewall more
-  # restrictive than you usually want for an overlay between trusted peers. Valid values:
-  #   private             - treat the nebula network as a private/trusted network (default)
-  #   public              - treat it as a public/untrusted network
-  #   domain              - treat it as a domain-authenticated network
-  #   unset               - leave whatever Windows decided alone
-  # Not reloadable.
-  #network_category: private
-
-  # On Windows only
-  # When true, Nebula installs a WFP (Windows Filtering Platform) PERMIT filter scoped to the nebula adapter LUID.
-  # WFP sits below Windows Defender Firewall, so this lets inbound traffic through regardless of WDF rules.
-  # Filters are auto-removed when the adapter goes away.
-  # See listen.windows_bypass_wdf for the matching control over inbound to nebula's outside UDP listener.
-  # Default true; set to false to leave WDF in charge of inbound decisions on the nebula interface. Not reloadable.
-  #windows_bypass_wdf: true
-
   # On linux only, set to true to manage unsafe routes directly on the system route table with gateway routes instead of
   # in nebula configuration files. Default false, not reloadable.
   #use_system_route_table: false
@@ -322,21 +282,24 @@ tun:
 
 # Configure logging level
 logging:
-  # trace, debug, info, warn, or error. Default is info and is reloadable.
-  # fatal and panic are accepted for backwards compatibility and map to error.
-  #NOTE: Debug and trace modes can log remotely controlled/untrusted data which can quickly fill a disk in some
-  # scenarios. Debug and trace logging are also CPU intensive and will decrease performance overall.
-  # Only enable debug or trace logging while actively investigating an issue.
+  # panic, fatal, error, warning, info, or debug. Default is info and is reloadable.
+  #NOTE: Debug mode can log remotely controlled/untrusted data which can quickly fill a disk in some
+  # scenarios. Debug logging is also CPU intensive and will decrease performance overall.
+  # Only enable debug logging while actively investigating an issue.
   level: info
-  # json or text formats currently available. Default is text.
+  # json or text formats currently available. Default is text
   format: text
-  # Disable timestamp logging. Useful when output is redirected to a logging system that already adds timestamps. Default is false.
+  # Disable timestamp logging. useful when output is redirected to logging system that already adds timestamps. Default is false
   #disable_timestamp: true
-  # Timestamps use RFC3339Nano ("2006-01-02T15:04:05.999999999Z07:00") and are not configurable.
+  # timestamp format is specified in Go time format, see:
+  #     https://golang.org/pkg/time/#pkg-constants
+  # default when `format: json`: "2006-01-02T15:04:05Z07:00" (RFC3339)
+  # default when `format: text`:
+  #     when TTY attached: seconds since beginning of execution
+  #     otherwise: "2006-01-02T15:04:05Z07:00" (RFC3339)
+  # As an example, to log as RFC3339 with millisecond precision, set to:
+  #timestamp_format: "2006-01-02T15:04:05.000Z07:00"
 
-# The stats section is reloadable. A HUP may change the backend, toggle stats
-# on or off, switch the listen/host address, or pick up new DNS for the
-# configured graphite host.
 #stats:
   #type: graphite
   #prefix: nebula
@@ -354,12 +317,10 @@ logging:
   # enables counter metrics for meta packets
   #   e.g.: `messages.tx.handshake`
   # NOTE: `message.{tx,rx}.recv_error` is always emitted
-  # Not reloadable.
   #message_metrics: false
 
   # enables detailed counter metrics for lighthouse packets
   #   e.g.: `lighthouse.rx.HostQuery`
-  # Not reloadable.
   #lighthouse_metrics: false
 
 # Handshake Manager Settings
@@ -397,7 +358,7 @@ firewall:
   #   `drop` (default): silently drop the packet.
   #   `reject`: send a reject reply.
   #     - For TCP, this will be a RST "Connection Reset" packet.
-  #     - For other protocols, this will be an ICMP "Destination unreachable: Communication administratively prohibited" packet.
+  #     - For other protocols, this will be an ICMP port unreachable packet.
   outbound_action: drop
   inbound_action: drop
 
@@ -417,14 +378,13 @@ firewall:
   # Rules are comprised of a protocol, port, and one or more of host, group, or CIDR
   # Logical evaluation is roughly: port AND proto AND (ca_sha OR ca_name) AND (host OR group OR groups OR cidr) AND (local cidr)
   # - port: Takes `0` or `any` as any, a single number `80`, a range `200-901`, or `fragment` to match second and further fragments of fragmented packets (since there is no port available).
+  #   code: same as port but makes more sense when talking about ICMP, TODO: this is not currently implemented in a way that works, use `any`
   #   proto: `any`, `tcp`, `udp`, or `icmp`
-  #          a port specification is ignored if proto is `icmp`
   #   host: `any` or a literal hostname, ie `test-host`
   #   group: `any` or a literal group name, ie `default-group`
   #   groups: Same as group but accepts a list of values. Multiple values are AND'd together and a certificate would have to contain all groups to pass
-  #   cidr: a remote CIDR, `0.0.0.0/0` is any ipv4 and `::/0` is any ipv6. `any` means any ip family and address.
-  #   local_cidr: a local CIDR, `0.0.0.0/0` is any ipv4 and `::/0` is any ipv6. `any` means any ip family and address.
-  #     This can be used to filter destinations when using unsafe_routes.
+  #   cidr: a remote CIDR, `0.0.0.0/0` is any ipv4 and `::/0` is any ipv6.
+  #   local_cidr: a local CIDR, `0.0.0.0/0` is any ipv4 and `::/0` is any ipv6. This can be used to filter destinations when using unsafe_routes.
   #     By default, this is set to only the VPN (overlay) networks assigned via the certificate networks field unless `default_local_cidr_any` is set to true.
   #     If there are unsafe_routes present in this config file, `local_cidr` should be set appropriately for the intended us case.
   #   ca_name: An issuing CA name

examples/go_service/main.go

@@ -7,9 +7,9 @@ import (
 	"net"
 	"os"
 
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula"
 	"github.com/slackhq/nebula/config"
-	"github.com/slackhq/nebula/logging"
 	"github.com/slackhq/nebula/overlay"
 	"github.com/slackhq/nebula/service"
 )
@@ -64,7 +64,8 @@ pki:
 		return err
 	}
 
-	logger := logging.NewLogger(os.Stdout)
+	logger := logrus.New()
+	logger.Out = os.Stdout
 
 	ctrl, err := nebula.Main(&cfg, false, "custom-app", logger, overlay.NewUserDeviceFromConfig)
 	if err != nil {

firewall.go

@@ -1,16 +1,13 @@
 package nebula
 
 import (
-	"context"
 	"crypto/sha256"
 	"encoding/hex"
 	"errors"
 	"fmt"
 	"hash/fnv"
-	"log/slog"
 	"net/netip"
 	"reflect"
-	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -18,13 +15,14 @@ import (
 
 	"github.com/gaissmai/bart"
 	"github.com/rcrowley/go-metrics"
+	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/config"
 	"github.com/slackhq/nebula/firewall"
 )
 
 type FirewallInterface interface {
-	AddRule(incoming bool, proto uint8, startPort int32, endPort int32, groups []string, host string, cidr, localCidr string, caName string, caSha string) error
+	AddRule(incoming bool, proto uint8, startPort int32, endPort int32, groups []string, host string, addr, localAddr netip.Prefix, caName string, caSha string) error
 }
 
 type conn struct {
@@ -58,9 +56,8 @@ type Firewall struct {
 	routableNetworks *bart.Lite
 
 	// assignedNetworks is a list of vpn networks assigned to us in the certificate.
-	assignedNetworks []netip.Prefix
-	// unsafeNetworks is the list of unsafe networks issued to us in the certificate
-	unsafeNetworks []netip.Prefix
+	assignedNetworks  []netip.Prefix
+	hasUnsafeNetworks bool
 
 	rules        string
 	rulesVersion uint16
@@ -69,7 +66,7 @@ type Firewall struct {
 	incomingMetrics     firewallMetrics
 	outgoingMetrics     firewallMetrics
 
-	l *slog.Logger
+	l *logrus.Logger
 }
 
 type firewallMetrics struct {
@@ -133,7 +130,7 @@ type firewallLocalCIDR struct {
 
 // NewFirewall creates a new Firewall object. A TimerWheel is created for you from the provided timeouts.
 // The certificate provided should be the highest version loaded in memory.
-func NewFirewall(l *slog.Logger, tcpTimeout, UDPTimeout, defaultTimeout time.Duration, c cert.Certificate) *Firewall {
+func NewFirewall(l *logrus.Logger, tcpTimeout, UDPTimeout, defaultTimeout time.Duration, c cert.Certificate) *Firewall {
 	//TODO: error on 0 duration
 	var tmin, tmax time.Duration
 
@@ -159,9 +156,10 @@ func NewFirewall(l *slog.Logger, tcpTimeout, UDPTimeout, defaultTimeout time.Dur
 		assignedNetworks = append(assignedNetworks, network)
 	}
 
-	unsafeNetworks := c.UnsafeNetworks()
-	for _, n := range unsafeNetworks {
+	hasUnsafeNetworks := false
+	for _, n := range c.UnsafeNetworks() {
 		routableNetworks.Insert(n)
+		hasUnsafeNetworks = true
 	}
 
 	return &Firewall{
@@ -169,15 +167,15 @@ func NewFirewall(l *slog.Logger, tcpTimeout, UDPTimeout, defaultTimeout time.Dur
 			Conns:      make(map[firewall.Packet]*conn),
 			TimerWheel: NewTimerWheel[firewall.Packet](tmin, tmax),
 		},
-		InRules:          newFirewallTable(),
-		OutRules:         newFirewallTable(),
-		TCPTimeout:       tcpTimeout,
-		UDPTimeout:       UDPTimeout,
-		DefaultTimeout:   defaultTimeout,
-		routableNetworks: routableNetworks,
-		assignedNetworks: assignedNetworks,
-		unsafeNetworks:   unsafeNetworks,
-		l:                l,
+		InRules:           newFirewallTable(),
+		OutRules:          newFirewallTable(),
+		TCPTimeout:        tcpTimeout,
+		UDPTimeout:        UDPTimeout,
+		DefaultTimeout:    defaultTimeout,
+		routableNetworks:  routableNetworks,
+		assignedNetworks:  assignedNetworks,
+		hasUnsafeNetworks: hasUnsafeNetworks,
+		l:                 l,
 
 		incomingMetrics: firewallMetrics{
 			droppedLocalAddr:  metrics.GetOrRegisterCounter("firewall.incoming.dropped.local_addr", nil),
@@ -192,7 +190,7 @@ func NewFirewall(l *slog.Logger, tcpTimeout, UDPTimeout, defaultTimeout time.Dur
 	}
 }
 
-func NewFirewallFromConfig(l *slog.Logger, cs *CertState, c *config.C) (*Firewall, error) {
+func NewFirewallFromConfig(l *logrus.Logger, cs *CertState, c *config.C) (*Firewall, error) {
 	certificate := cs.getCertificate(cert.Version2)
 	if certificate == nil {
 		certificate = cs.getCertificate(cert.Version1)
@@ -220,7 +218,7 @@ func NewFirewallFromConfig(l *slog.Logger, cs *CertState, c *config.C) (*Firewal
 	case "drop":
 		fw.InSendReject = false
 	default:
-		l.Warn("invalid firewall.inbound_action, defaulting to `drop`", "action", inboundAction)
+		l.WithField("action", inboundAction).Warn("invalid firewall.inbound_action, defaulting to `drop`")
 		fw.InSendReject = false
 	}
 
@@ -231,7 +229,7 @@ func NewFirewallFromConfig(l *slog.Logger, cs *CertState, c *config.C) (*Firewal
 	case "drop":
 		fw.OutSendReject = false
 	default:
-		l.Warn("invalid firewall.outbound_action, defaulting to `drop`", "action", outboundAction)
+		l.WithField("action", inboundAction).Warn("invalid firewall.outbound_action, defaulting to `drop`")
 		fw.OutSendReject = false
 	}
 
@@ -249,7 +247,32 @@ func NewFirewallFromConfig(l *slog.Logger, cs *CertState, c *config.C) (*Firewal
 }
 
 // AddRule properly creates the in memory rule structure for a firewall table.
-func (f *Firewall) AddRule(incoming bool, proto uint8, startPort int32, endPort int32, groups []string, host string, cidr, localCidr, caName string, caSha string) error {
+func (f *Firewall) AddRule(incoming bool, proto uint8, startPort int32, endPort int32, groups []string, host string, ip, localIp netip.Prefix, caName string, caSha string) error {
+	// Under gomobile, stringing a nil pointer with fmt causes an abort in debug mode for iOS
+	// https://github.com/golang/go/issues/14131
+	sIp := ""
+	if ip.IsValid() {
+		sIp = ip.String()
+	}
+	lIp := ""
+	if localIp.IsValid() {
+		lIp = localIp.String()
+	}
+
+	// We need this rule string because we generate a hash. Removing this will break firewall reload.
+	ruleString := fmt.Sprintf(
+		"incoming: %v, proto: %v, startPort: %v, endPort: %v, groups: %v, host: %v, ip: %v, localIp: %v, caName: %v, caSha: %s",
+		incoming, proto, startPort, endPort, groups, host, sIp, lIp, caName, caSha,
+	)
+	f.rules += ruleString + "\n"
+
+	direction := "incoming"
+	if !incoming {
+		direction = "outgoing"
+	}
+	f.l.WithField("firewallRule", m{"direction": direction, "proto": proto, "startPort": startPort, "endPort": endPort, "groups": groups, "host": host, "ip": sIp, "localIp": lIp, "caName": caName, "caSha": caSha}).
+		Info("Firewall rule added")
+
 	var (
 		ft *FirewallTable
 		fp firewallPort
@@ -267,12 +290,6 @@ func (f *Firewall) AddRule(incoming bool, proto uint8, startPort int32, endPort
 	case firewall.ProtoUDP:
 		fp = ft.UDP
 	case firewall.ProtoICMP, firewall.ProtoICMPv6:
-		//ICMP traffic doesn't have ports, so we always coerce to "any", even if a value is provided
-		if startPort != firewall.PortAny {
-			f.l.Warn("ignoring port specification for ICMP firewall rule", "startPort", startPort)
-		}
-		startPort = firewall.PortAny
-		endPort = firewall.PortAny
 		fp = ft.ICMP
 	case firewall.ProtoAny:
 		fp = ft.AnyProto
@@ -280,22 +297,7 @@ func (f *Firewall) AddRule(incoming bool, proto uint8, startPort int32, endPort
 		return fmt.Errorf("unknown protocol %v", proto)
 	}
 
-	// We need this rule string because we generate a hash. Removing this will break firewall reload.
-	ruleString := fmt.Sprintf(
-		"incoming: %v, proto: %v, startPort: %v, endPort: %v, groups: %v, host: %v, ip: %v, localIp: %v, caName: %v, caSha: %s",
-		incoming, proto, startPort, endPort, groups, host, cidr, localCidr, caName, caSha,
-	)
-	f.rules += ruleString + "\n"
-
-	direction := "incoming"
-	if !incoming {
-		direction = "outgoing"
-	}
-	f.l.Info("Firewall rule added",
-		"firewallRule", m{"direction": direction, "proto": proto, "startPort": startPort, "endPort": endPort, "groups": groups, "host": host, "cidr": cidr, "localCidr": localCidr, "caName": caName, "caSha": caSha},
-	)
-
-	return fp.addRule(f, startPort, endPort, groups, host, cidr, localCidr, caName, caSha)
+	return fp.addRule(f, startPort, endPort, groups, host, ip, localIp, caName, caSha)
 }
 
 // GetRuleHash returns a hash representation of all inbound and outbound rules
@@ -316,7 +318,7 @@ func (f *Firewall) GetRuleHashes() string {
 	return "SHA:" + f.GetRuleHash() + ",FNV:" + strconv.FormatUint(uint64(f.GetRuleHashFNV()), 10)
 }
 
-func AddFirewallRulesFromConfig(l *slog.Logger, inbound bool, c *config.C, fw FirewallInterface) error {
+func AddFirewallRulesFromConfig(l *logrus.Logger, inbound bool, c *config.C, fw FirewallInterface) error {
 	var table string
 	if inbound {
 		table = "firewall.inbound"
@@ -335,6 +337,7 @@ func AddFirewallRulesFromConfig(l *slog.Logger, inbound bool, c *config.C, fw Fi
 	}
 
 	for i, t := range rs {
+		var groups []string
 		r, err := convertRule(l, t, table, i)
 		if err != nil {
 			return fmt.Errorf("%s rule #%v; %s", table, i, err)
@@ -344,10 +347,23 @@ func AddFirewallRulesFromConfig(l *slog.Logger, inbound bool, c *config.C, fw Fi
 			return fmt.Errorf("%s rule #%v; only one of port or code should be provided", table, i)
 		}
 
-		if r.Host == "" && len(r.Groups) == 0 && r.Cidr == "" && r.LocalCidr == "" && r.CAName == "" && r.CASha == "" {
+		if r.Host == "" && len(r.Groups) == 0 && r.Group == "" && r.Cidr == "" && r.LocalCidr == "" && r.CAName == "" && r.CASha == "" {
 			return fmt.Errorf("%s rule #%v; at least one of host, group, cidr, local_cidr, ca_name, or ca_sha must be provided", table, i)
 		}
 
+		if len(r.Groups) > 0 {
+			groups = r.Groups
+		}
+
+		if r.Group != "" {
+			// Check if we have both groups and group provided in the rule config
+			if len(groups) > 0 {
+				return fmt.Errorf("%s rule #%v; only one of group or groups should be defined, both provided", table, i)
+			}
+
+			groups = []string{r.Group}
+		}
+
 		var sPort, errPort string
 		if r.Code != "" {
 			errPort = "code"
@@ -357,55 +373,42 @@ func AddFirewallRulesFromConfig(l *slog.Logger, inbound bool, c *config.C, fw Fi
 			sPort = r.Port
 		}
 
-		var proto uint8
-		var startPort, endPort int32
-		switch r.Proto {
-		case "any":
-			proto = firewall.ProtoAny
-			startPort, endPort, err = parsePort(sPort)
-		case "tcp":
-			proto = firewall.ProtoTCP
-			startPort, endPort, err = parsePort(sPort)
-		case "udp":
-			proto = firewall.ProtoUDP
-			startPort, endPort, err = parsePort(sPort)
-		case "icmp":
-			proto = firewall.ProtoICMP
-			startPort = firewall.PortAny
-			endPort = firewall.PortAny
-			if sPort != "" {
-				l.Warn("ignoring port specification for ICMP firewall rule", "port", sPort)
-			}
-		default:
-			return fmt.Errorf("%s rule #%v; proto was not understood; `%s`", table, i, r.Proto)
-		}
+		startPort, endPort, err := parsePort(sPort)
 		if err != nil {
 			return fmt.Errorf("%s rule #%v; %s %s", table, i, errPort, err)
 		}
 
-		if r.Cidr != "" && r.Cidr != "any" {
-			_, err = netip.ParsePrefix(r.Cidr)
+		var proto uint8
+		switch r.Proto {
+		case "any":
+			proto = firewall.ProtoAny
+		case "tcp":
+			proto = firewall.ProtoTCP
+		case "udp":
+			proto = firewall.ProtoUDP
+		case "icmp":
+			proto = firewall.ProtoICMP
+		default:
+			return fmt.Errorf("%s rule #%v; proto was not understood; `%s`", table, i, r.Proto)
+		}
+
+		var cidr netip.Prefix
+		if r.Cidr != "" {
+			cidr, err = netip.ParsePrefix(r.Cidr)
 			if err != nil {
 				return fmt.Errorf("%s rule #%v; cidr did not parse; %s", table, i, err)
 			}
 		}
 
-		if r.LocalCidr != "" && r.LocalCidr != "any" {
-			_, err = netip.ParsePrefix(r.LocalCidr)
+		var localCidr netip.Prefix
+		if r.LocalCidr != "" {
+			localCidr, err = netip.ParsePrefix(r.LocalCidr)
 			if err != nil {
 				return fmt.Errorf("%s rule #%v; local_cidr did not parse; %s", table, i, err)
 			}
 		}
 
-		if warning := r.sanity(); warning != nil {
-			l.Warn("firewall rule sanity check",
-				"table", table,
-				"rule", i,
-				"warning", warning,
-			)
-		}
-
-		err = fw.AddRule(inbound, proto, startPort, endPort, r.Groups, r.Host, r.Cidr, r.LocalCidr, r.CAName, r.CASha)
+		err = fw.AddRule(inbound, proto, startPort, endPort, groups, r.Host, cidr, localCidr, r.CAName, r.CASha)
 		if err != nil {
 			return fmt.Errorf("%s rule #%v; `%s`", table, i, err)
 		}
@@ -415,9 +418,9 @@ func AddFirewallRulesFromConfig(l *slog.Logger, inbound bool, c *config.C, fw Fi
 }
 
 var ErrUnknownNetworkType = errors.New("unknown network type")
-var ErrPeerRejected = errors.New("remote address is not within a network that we handle")
-var ErrInvalidRemoteIP = errors.New("remote address is not in remote certificate networks")
-var ErrInvalidLocalIP = errors.New("local address is not in list of handled local addresses")
+var ErrPeerRejected = errors.New("remote IP is not within a subnet that we handle")
+var ErrInvalidRemoteIP = errors.New("remote IP is not in remote certificate subnets")
+var ErrInvalidLocalIP = errors.New("local IP is not in list of handled local IPs")
 var ErrNoMatchingRule = errors.New("no matching rule in firewall table")
 
 // Drop returns an error if the packet should be dropped, explaining why. It
@@ -486,7 +489,7 @@ func (f *Firewall) metrics(incoming bool) firewallMetrics {
 	}
 }
 
-// Destroy cleans up any known cyclical references so the object can be freed by GC. This should be called if a new
+// Destroy cleans up any known cyclical references so the object can be free'd my GC. This should be called if a new
 // firewall object is created
 func (f *Firewall) Destroy() {
 	//TODO: clean references if/when needed
@@ -534,26 +537,26 @@ func (f *Firewall) inConns(fp firewall.Packet, h *HostInfo, caPool *cert.CAPool,
 
 		// We now know which firewall table to check against
 		if !table.match(fp, c.incoming, h.ConnectionState.peerCert, caPool) {
-			if f.l.Enabled(context.Background(), slog.LevelDebug) {
-				h.logger(f.l).Debug("dropping old conntrack entry, does not match new ruleset",
-					"fwPacket", fp,
-					"incoming", c.incoming,
-					"rulesVersion", f.rulesVersion,
-					"oldRulesVersion", c.rulesVersion,
-				)
+			if f.l.Level >= logrus.DebugLevel {
+				h.logger(f.l).
+					WithField("fwPacket", fp).
+					WithField("incoming", c.incoming).
+					WithField("rulesVersion", f.rulesVersion).
+					WithField("oldRulesVersion", c.rulesVersion).
+					Debugln("dropping old conntrack entry, does not match new ruleset")
 			}
 			delete(conntrack.Conns, fp)
 			conntrack.Unlock()
 			return false
 		}
 
-		if f.l.Enabled(context.Background(), slog.LevelDebug) {
-			h.logger(f.l).Debug("keeping old conntrack entry, does match new ruleset",
-				"fwPacket", fp,
-				"incoming", c.incoming,
-				"rulesVersion", f.rulesVersion,
-				"oldRulesVersion", c.rulesVersion,
-			)
+		if f.l.Level >= logrus.DebugLevel {
+			h.logger(f.l).
+				WithField("fwPacket", fp).
+				WithField("incoming", c.incoming).
+				WithField("rulesVersion", f.rulesVersion).
+				WithField("oldRulesVersion", c.rulesVersion).
+				Debugln("keeping old conntrack entry, does match new ruleset")
 		}
 
 		c.rulesVersion = f.rulesVersion
@@ -652,7 +655,7 @@ func (ft *FirewallTable) match(p firewall.Packet, incoming bool, c *cert.CachedC
 	return false
 }
 
-func (fp firewallPort) addRule(f *Firewall, startPort int32, endPort int32, groups []string, host string, cidr, localCidr, caName string, caSha string) error {
+func (fp firewallPort) addRule(f *Firewall, startPort int32, endPort int32, groups []string, host string, ip, localIp netip.Prefix, caName string, caSha string) error {
 	if startPort > endPort {
 		return fmt.Errorf("start port was lower than end port")
 	}
@@ -665,7 +668,7 @@ func (fp firewallPort) addRule(f *Firewall, startPort int32, endPort int32, grou
 			}
 		}
 
-		if err := fp[i].addRule(f, groups, host, cidr, localCidr, caName, caSha); err != nil {
+		if err := fp[i].addRule(f, groups, host, ip, localIp, caName, caSha); err != nil {
 			return err
 		}
 	}
@@ -679,13 +682,6 @@ func (fp firewallPort) match(p firewall.Packet, incoming bool, c *cert.CachedCer
 		return false
 	}
 
-	// this branch is here to catch traffic from FirewallTable.Any.match and FirewallTable.ICMP.match
-	if p.Protocol == firewall.ProtoICMP || p.Protocol == firewall.ProtoICMPv6 {
-		// port numbers are re-used for connection tracking of ICMP,
-		// but we don't want to actually filter on them.
-		return fp[firewall.PortAny].match(p, c, caPool)
-	}
-
 	var port int32
 
 	if p.Fragment {
@@ -703,7 +699,7 @@ func (fp firewallPort) match(p firewall.Packet, incoming bool, c *cert.CachedCer
 	return fp[firewall.PortAny].match(p, c, caPool)
 }
 
-func (fc *FirewallCA) addRule(f *Firewall, groups []string, host string, cidr, localCidr, caName, caSha string) error {
+func (fc *FirewallCA) addRule(f *Firewall, groups []string, host string, ip, localIp netip.Prefix, caName, caSha string) error {
 	fr := func() *FirewallRule {
 		return &FirewallRule{
 			Hosts:  make(map[string]*firewallLocalCIDR),
@@ -717,14 +713,14 @@ func (fc *FirewallCA) addRule(f *Firewall, groups []string, host string, cidr, l
 			fc.Any = fr()
 		}
 
-		return fc.Any.addRule(f, groups, host, cidr, localCidr)
+		return fc.Any.addRule(f, groups, host, ip, localIp)
 	}
 
 	if caSha != "" {
 		if _, ok := fc.CAShas[caSha]; !ok {
 			fc.CAShas[caSha] = fr()
 		}
-		err := fc.CAShas[caSha].addRule(f, groups, host, cidr, localCidr)
+		err := fc.CAShas[caSha].addRule(f, groups, host, ip, localIp)
 		if err != nil {
 			return err
 		}
@@ -734,7 +730,7 @@ func (fc *FirewallCA) addRule(f *Firewall, groups []string, host string, cidr, l
 		if _, ok := fc.CANames[caName]; !ok {
 			fc.CANames[caName] = fr()
 		}
-		err := fc.CANames[caName].addRule(f, groups, host, cidr, localCidr)
+		err := fc.CANames[caName].addRule(f, groups, host, ip, localIp)
 		if err != nil {
 			return err
 		}
@@ -766,24 +762,24 @@ func (fc *FirewallCA) match(p firewall.Packet, c *cert.CachedCertificate, caPool
 	return fc.CANames[s.Certificate.Name()].match(p, c)
 }
 
-func (fr *FirewallRule) addRule(f *Firewall, groups []string, host, cidr, localCidr string) error {
+func (fr *FirewallRule) addRule(f *Firewall, groups []string, host string, ip, localCIDR netip.Prefix) error {
 	flc := func() *firewallLocalCIDR {
 		return &firewallLocalCIDR{
 			LocalCIDR: new(bart.Lite),
 		}
 	}
 
-	if fr.isAny(groups, host, cidr) {
+	if fr.isAny(groups, host, ip) {
 		if fr.Any == nil {
 			fr.Any = flc()
 		}
 
-		return fr.Any.addRule(f, localCidr)
+		return fr.Any.addRule(f, localCIDR)
 	}
 
 	if len(groups) > 0 {
 		nlc := flc()
-		err := nlc.addRule(f, localCidr)
+		err := nlc.addRule(f, localCIDR)
 		if err != nil {
 			return err
 		}
@@ -799,46 +795,44 @@ func (fr *FirewallRule) addRule(f *Firewall, groups []string, host, cidr, localC
 		if nlc == nil {
 			nlc = flc()
 		}
-		err := nlc.addRule(f, localCidr)
+		err := nlc.addRule(f, localCIDR)
 		if err != nil {
 			return err
 		}
 		fr.Hosts[host] = nlc
 	}
 
-	if cidr != "" {
-		c, err := netip.ParsePrefix(cidr)
-		if err != nil {
-			return err
-		}
-		nlc, _ := fr.CIDR.Get(c)
+	if ip.IsValid() {
+		nlc, _ := fr.CIDR.Get(ip)
 		if nlc == nil {
 			nlc = flc()
 		}
-		err = nlc.addRule(f, localCidr)
+		err := nlc.addRule(f, localCIDR)
 		if err != nil {
 			return err
 		}
-		fr.CIDR.Insert(c, nlc)
+		fr.CIDR.Insert(ip, nlc)
 	}
 
 	return nil
 }
 
-func (fr *FirewallRule) isAny(groups []string, host string, cidr string) bool {
-	if len(groups) == 0 && host == "" && cidr == "" {
+func (fr *FirewallRule) isAny(groups []string, host string, ip netip.Prefix) bool {
+	if len(groups) == 0 && host == "" && !ip.IsValid() {
 		return true
 	}
 
-	if slices.Contains(groups, "any") {
-		return true
+	for _, group := range groups {
+		if group == "any" {
+			return true
+		}
 	}
 
 	if host == "any" {
 		return true
 	}
 
-	if cidr == "any" {
+	if ip.IsValid() && ip.Bits() == 0 {
 		return true
 	}
 
@@ -890,14 +884,9 @@ func (fr *FirewallRule) match(p firewall.Packet, c *cert.CachedCertificate) bool
 	return false
 }
 
-func (flc *firewallLocalCIDR) addRule(f *Firewall, localCidr string) error {
-	if localCidr == "any" {
-		flc.Any = true
-		return nil
-	}
-
-	if localCidr == "" {
-		if len(f.unsafeNetworks) == 0 || f.defaultLocalCIDRAny {
+func (flc *firewallLocalCIDR) addRule(f *Firewall, localIp netip.Prefix) error {
+	if !localIp.IsValid() {
+		if !f.hasUnsafeNetworks || f.defaultLocalCIDRAny {
 			flc.Any = true
 			return nil
 		}
@@ -907,13 +896,12 @@ func (flc *firewallLocalCIDR) addRule(f *Firewall, localCidr string) error {
 		}
 		return nil
 
+	} else if localIp.Bits() == 0 {
+		flc.Any = true
+		return nil
 	}
 
-	c, err := netip.ParsePrefix(localCidr)
-	if err != nil {
-		return err
-	}
-	flc.LocalCIDR.Insert(c)
+	flc.LocalCIDR.Insert(localIp)
 	return nil
 }
 
@@ -934,6 +922,7 @@ type rule struct {
 	Code      string
 	Proto     string
 	Host      string
+	Group     string
 	Groups    []string
 	Cidr      string
 	LocalCidr string
@@ -941,7 +930,7 @@ type rule struct {
 	CASha     string
 }
 
-func convertRule(l *slog.Logger, p any, table string, i int) (rule, error) {
+func convertRule(l *logrus.Logger, p any, table string, i int) (rule, error) {
 	r := rule{}
 
 	m, ok := p.(map[string]any)
@@ -972,14 +961,10 @@ func convertRule(l *slog.Logger, p any, table string, i int) (rule, error) {
 			return r, errors.New("group should contain a single value, an array with more than one entry was provided")
 		}
 
-		l.Warn("group was an array with a single value, converting to simple value",
-			"table", table,
-			"rule", i,
-		)
+		l.Warnf("%s rule #%v; group was an array with a single value, converting to simple value", table, i)
 		m["group"] = v[0]
 	}
-
-	singleGroup := toString("group", m)
+	r.Group = toString("group", m)
 
 	if rg, ok := m["groups"]; ok {
 		switch reflect.TypeOf(rg).Kind() {
@@ -996,122 +981,52 @@ func convertRule(l *slog.Logger, p any, table string, i int) (rule, error) {
 		}
 	}
 
-	//flatten group vs groups
-	if singleGroup != "" {
-		// Check if we have both groups and group provided in the rule config
-		if len(r.Groups) > 0 {
-			return r, fmt.Errorf("only one of group or groups should be defined, both provided")
-		}
-		r.Groups = []string{singleGroup}
-	}
-
 	return r, nil
 }
 
-// sanity returns an error if the rule would be evaluated in a way that would short-circuit a configured check on a wildcard value
-// rules are evaluated as "port AND proto AND (ca_sha OR ca_name) AND (host OR group OR groups OR cidr) AND local_cidr"
-func (r *rule) sanity() error {
-	//port, proto, local_cidr are AND, no need to check here
-	//ca_sha and ca_name don't have a wildcard value, no need to check here
-	groupsEmpty := len(r.Groups) == 0
-	hostEmpty := r.Host == ""
-	cidrEmpty := r.Cidr == ""
-
-	if (groupsEmpty && hostEmpty && cidrEmpty) == true {
-		return nil //no content!
-	}
-
-	groupsHasAny := slices.Contains(r.Groups, "any")
-	if groupsHasAny && len(r.Groups) > 1 {
-		return fmt.Errorf("groups spec [%s] contains the group '\"any\". This rule will ignore the other groups specified", r.Groups)
-	}
-
-	if r.Host == "any" {
-		if !groupsEmpty {
-			return fmt.Errorf("groups specified as %s, but host=any will match any host, regardless of groups", r.Groups)
-		}
-
-		if !cidrEmpty {
-			return fmt.Errorf("cidr specified as %s, but host=any will match any host, regardless of cidr", r.Cidr)
-		}
-	}
-
-	if groupsHasAny {
-		if !hostEmpty && r.Host != "any" {
-			return fmt.Errorf("groups spec [%s] contains the group '\"any\". This rule will ignore the specified host %s", r.Groups, r.Host)
-		}
-		if !cidrEmpty {
-			return fmt.Errorf("groups spec [%s] contains the group '\"any\". This rule will ignore the specified cidr %s", r.Groups, r.Cidr)
-		}
-	}
-
-	if r.Code != "" {
-		return fmt.Errorf("code specified as [%s]. Support for 'code' will be dropped in a future release, as it has never been functional", r.Code)
-	}
-
-	//todo alert on cidr-any
-
-	return nil
-}
-
-func parsePort(s string) (int32, int32, error) {
-	const notAPort int32 = -2
+func parsePort(s string) (startPort, endPort int32, err error) {
 	if s == "any" {
-		return firewall.PortAny, firewall.PortAny, nil
-	}
-	if s == "fragment" {
-		return firewall.PortFragment, firewall.PortFragment, nil
-	}
-	if !strings.Contains(s, `-`) {
-		rPort, err := parsePortValue("", s)
-		if err != nil {
-			return notAPort, notAPort, err
-		}
-		return rPort, rPort, nil
-	}
-
-	sPorts := strings.SplitN(s, `-`, 2)
-	for i := range sPorts {
-		sPorts[i] = strings.Trim(sPorts[i], " ")
-	}
-	if len(sPorts) != 2 || sPorts[0] == "" || sPorts[1] == "" {
-		return notAPort, notAPort, fmt.Errorf("appears to be a range but could not be parsed; `%s`", s)
-	}
-
-	startPort, err := parsePortValue("beginning range ", sPorts[0])
-	if err != nil {
-		return notAPort, notAPort, err
-	}
-
-	endPort, err := parsePortValue("ending range ", sPorts[1])
-	if err != nil {
-		return notAPort, notAPort, err
-	}
-
-	if startPort == firewall.PortAny {
+		startPort = firewall.PortAny
 		endPort = firewall.PortAny
+
+	} else if s == "fragment" {
+		startPort = firewall.PortFragment
+		endPort = firewall.PortFragment
+
+	} else if strings.Contains(s, `-`) {
+		sPorts := strings.SplitN(s, `-`, 2)
+		sPorts[0] = strings.Trim(sPorts[0], " ")
+		sPorts[1] = strings.Trim(sPorts[1], " ")
+
+		if len(sPorts) != 2 || sPorts[0] == "" || sPorts[1] == "" {
+			return 0, 0, fmt.Errorf("appears to be a range but could not be parsed; `%s`", s)
+		}
+
+		rStartPort, err := strconv.Atoi(sPorts[0])
+		if err != nil {
+			return 0, 0, fmt.Errorf("beginning range was not a number; `%s`", sPorts[0])
+		}
+
+		rEndPort, err := strconv.Atoi(sPorts[1])
+		if err != nil {
+			return 0, 0, fmt.Errorf("ending range was not a number; `%s`", sPorts[1])
+		}
+
+		startPort = int32(rStartPort)
+		endPort = int32(rEndPort)
+
+		if startPort == firewall.PortAny {
+			endPort = firewall.PortAny
+		}
+
+	} else {
+		rPort, err := strconv.Atoi(s)
+		if err != nil {
+			return 0, 0, fmt.Errorf("was not a number; `%s`", s)
+		}
+		startPort = int32(rPort)
+		endPort = startPort
 	}
 
-	return startPort, endPort, nil
-}
-
-// parsePortValue accepts a base-10 decimal in [0, 65535] and returns it
-// widened to int32. Using strconv.ParseUint with bitSize 16 rejects
-// negative input, out-of-range input (>65535), and any non-decimal byte
-// by construction, so the int32 widening that follows is provably safe
-// and cannot collide with firewall.PortAny (0) or firewall.PortFragment
-// (-1) via integer truncation.
-//
-// prefix is prepended to both error messages so callers can disambiguate
-// the single-port path (prefix="") from the range bounds (prefix="beginning
-// range " / "ending range "), preserving the historical error strings.
-func parsePortValue(prefix, s string) (int32, error) {
-	n, err := strconv.ParseUint(s, 10, 16)
-	if err == nil {
-		return int32(n), nil
-	}
-	if errors.Is(err, strconv.ErrRange) {
-		return 0, fmt.Errorf("%sout of range [0,65535]; `%s`", prefix, s)
-	}
-	return 0, fmt.Errorf("%swas not a number; `%s`", prefix, s)
+	return
 }

firewall/cache.go

@@ -1,10 +1,10 @@
 package firewall
 
 import (
-	"context"
-	"log/slog"
 	"sync/atomic"
 	"time"
+
+	"github.com/sirupsen/logrus"
 )
 
 // ConntrackCache is used as a local routine cache to know if a given flow
@@ -15,49 +15,41 @@ type ConntrackCacheTicker struct {
 	cacheV    uint64
 	cacheTick atomic.Uint64
 
-	l     *slog.Logger
 	cache ConntrackCache
 }
 
-func NewConntrackCacheTicker(ctx context.Context, l *slog.Logger, d time.Duration) *ConntrackCacheTicker {
+func NewConntrackCacheTicker(d time.Duration) *ConntrackCacheTicker {
 	if d == 0 {
 		return nil
 	}
 
 	c := &ConntrackCacheTicker{
-		l:     l,
 		cache: ConntrackCache{},
 	}
 
-	go c.tick(ctx, d)
+	go c.tick(d)
 
 	return c
 }
 
-func (c *ConntrackCacheTicker) tick(ctx context.Context, d time.Duration) {
-	t := time.NewTicker(d)
-	defer t.Stop()
+func (c *ConntrackCacheTicker) tick(d time.Duration) {
 	for {
-		select {
-		case <-ctx.Done():
-			return
-		case <-t.C:
-			c.cacheTick.Add(1)
-		}
+		time.Sleep(d)
+		c.cacheTick.Add(1)
 	}
 }
 
 // Get checks if the cache ticker has moved to the next version before returning
 // the map. If it has moved, we reset the map.
-func (c *ConntrackCacheTicker) Get() ConntrackCache {
+func (c *ConntrackCacheTicker) Get(l *logrus.Logger) ConntrackCache {
 	if c == nil {
 		return nil
 	}
 	if tick := c.cacheTick.Load(); tick != c.cacheV {
 		c.cacheV = tick
 		if ll := len(c.cache); ll > 0 {
-			if c.l.Enabled(context.Background(), slog.LevelDebug) {
-				c.l.Debug("resetting conntrack cache", "len", ll)
+			if l.Level == logrus.DebugLevel {
+				l.WithField("len", ll).Debug("resetting conntrack cache")
 			}
 			c.cache = make(ConntrackCache, ll)
 		}

firewall/cache_test.go

@@ -1,69 +0,0 @@
-package firewall
-
-import (
-	"bytes"
-	"log/slog"
-	"strings"
-	"testing"
-
-	"github.com/slackhq/nebula/test"
-	"github.com/stretchr/testify/assert"
-)
-
-// The tests below pin the log format produced by ConntrackCacheTicker.Get
-// so changes cannot silently break what operators are grepping for. The
-// ticker's internal state (cache + cacheTick) is poked directly to avoid
-// racing a goroutine-driven tick in tests.
-
-func newFixedTicker(t *testing.T, l *slog.Logger, cacheLen int) *ConntrackCacheTicker {
-	t.Helper()
-	c := &ConntrackCacheTicker{
-		l:     l,
-		cache: make(ConntrackCache, cacheLen),
-	}
-	for i := 0; i < cacheLen; i++ {
-		c.cache[Packet{LocalPort: uint16(i) + 1}] = struct{}{}
-	}
-	c.cacheTick.Store(1) // cacheV starts at 0, so Get() takes the reset path
-	return c
-}
-
-func TestConntrackCacheTicker_Get_TextFormat(t *testing.T) {
-	buf := &bytes.Buffer{}
-	l := test.NewLoggerWithOutputAndLevel(buf, slog.LevelDebug)
-
-	c := newFixedTicker(t, l, 3)
-	c.Get()
-
-	assert.Equal(t, "level=DEBUG msg=\"resetting conntrack cache\" len=3\n", buf.String())
-}
-
-func TestConntrackCacheTicker_Get_JSONFormat(t *testing.T) {
-	buf := &bytes.Buffer{}
-	l := test.NewJSONLoggerWithOutput(buf, slog.LevelDebug)
-
-	c := newFixedTicker(t, l, 2)
-	c.Get()
-
-	assert.JSONEq(t, `{"level":"DEBUG","msg":"resetting conntrack cache","len":2}`, strings.TrimSpace(buf.String()))
-}
-
-func TestConntrackCacheTicker_Get_QuietBelowDebug(t *testing.T) {
-	buf := &bytes.Buffer{}
-	l := test.NewLoggerWithOutputAndLevel(buf, slog.LevelInfo)
-
-	c := newFixedTicker(t, l, 5)
-	c.Get()
-
-	assert.Empty(t, buf.String())
-}
-
-func TestConntrackCacheTicker_Get_QuietWhenCacheEmpty(t *testing.T) {
-	buf := &bytes.Buffer{}
-	l := test.NewLoggerWithOutputAndLevel(buf, slog.LevelDebug)
-
-	c := newFixedTicker(t, l, 0)
-	c.Get()
-
-	assert.Empty(t, buf.String())
-}

firewall/packet.go

@@ -22,10 +22,7 @@ const (
 type Packet struct {
 	LocalAddr  netip.Addr
 	RemoteAddr netip.Addr
-	// LocalPort is the destination port for incoming traffic, or the source port for outgoing. Zero for ICMP.
-	LocalPort uint16
-	// RemotePort is the source port for incoming traffic, or the destination port for outgoing.
-	// For ICMP, it's the "identifier". This is only used for connection tracking, actual firewall rules will not filter on ICMP identifier
+	LocalPort  uint16
 	RemotePort uint16
 	Protocol   uint8
 	Fragment   bool
@@ -49,8 +46,6 @@ func (fp Packet) MarshalJSON() ([]byte, error) {
 		proto = "tcp"
 	case ProtoICMP:
 		proto = "icmp"
-	case ProtoICMPv6:
-		proto = "icmpv6"
 	case ProtoUDP:
 		proto = "udp"
 	default:

go.mod

@@ -1,39 +1,37 @@
 module github.com/slackhq/nebula
 
-go 1.25.0
+go 1.25
 
 require (
 	dario.cat/mergo v1.0.2
-	filippo.io/bigmod v0.1.0
 	github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be
 	github.com/armon/go-radix v1.0.0
 	github.com/cyberdelia/go-metrics-graphite v0.0.0-20161219230853-39f87cc3b432
 	github.com/flynn/noise v1.1.0
-	github.com/gaissmai/bart v0.28.0
+	github.com/gaissmai/bart v0.25.0
 	github.com/gogo/protobuf v1.3.2
 	github.com/google/gopacket v1.1.19
 	github.com/kardianos/service v1.2.4
-	github.com/miekg/dns v1.1.72
-	github.com/miekg/pkcs11 v1.1.2
+	github.com/miekg/dns v1.1.68
+	github.com/miekg/pkcs11 v1.1.2-0.20231115102856-9078ad6b9d4b
 	github.com/nbrownus/go-metrics-prometheus v0.0.0-20210712211119-974a6260965f
 	github.com/prometheus/client_golang v1.23.2
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475
+	github.com/sirupsen/logrus v1.9.3
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
 	github.com/stefanberger/go-pkcs11uri v0.0.0-20230803200340-78284954bff6
 	github.com/stretchr/testify v1.11.1
 	github.com/vishvananda/netlink v1.3.1
-	go.uber.org/goleak v1.3.0
-	go.yaml.in/yaml/v3 v3.0.4
-	golang.org/x/crypto v0.53.0
+	golang.org/x/crypto v0.43.0
 	golang.org/x/exp v0.0.0-20230725093048-515e97ebf090
-	golang.org/x/net v0.56.0
-	golang.org/x/sync v0.21.0
-	golang.org/x/sys v0.46.0
-	golang.org/x/term v0.44.0
+	golang.org/x/net v0.45.0
+	golang.org/x/sync v0.17.0
+	golang.org/x/sys v0.37.0
+	golang.org/x/term v0.36.0
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2
 	golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b
-	golang.zx2c4.com/wireguard/windows v0.6.1
-	google.golang.org/protobuf v1.36.11
+	golang.zx2c4.com/wireguard/windows v0.5.3
+	google.golang.org/protobuf v1.36.8
 	gopkg.in/yaml.v3 v3.0.1
 	gvisor.dev/gvisor v0.0.0-20240423190808-9d7a357edefe
 )
@@ -50,7 +48,7 @@ require (
 	github.com/prometheus/procfs v0.16.1 // indirect
 	github.com/vishvananda/netns v0.0.5 // indirect
 	go.yaml.in/yaml/v2 v2.4.2 // indirect
-	golang.org/x/mod v0.34.0 // indirect
+	golang.org/x/mod v0.24.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
-	golang.org/x/tools v0.43.0 // indirect
+	golang.org/x/tools v0.33.0 // indirect
 )

go.sum

@@ -1,8 +1,6 @@
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 dario.cat/mergo v1.0.2 h1:85+piFYR1tMbRrLcDwR18y4UKJ3aH1Tbzi24VRW1TK8=
 dario.cat/mergo v1.0.2/go.mod h1:E/hbnu0NxMFBjpMIE34DRGLWqDy0g5FuKDhCb31ngxA=
-filippo.io/bigmod v0.1.0 h1:UNzDk7y9ADKST+axd9skUpBQeW7fG2KrTZyOE4uGQy8=
-filippo.io/bigmod v0.1.0/go.mod h1:OjOXDNlClLblvXdwgFFOQFJEocLhhtai8vGLy0JCZlI=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
@@ -26,8 +24,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/flynn/noise v1.1.0 h1:KjPQoQCEFdZDiP03phOvGi11+SVVhBG2wOWAorLsstg=
 github.com/flynn/noise v1.1.0/go.mod h1:xbMo+0i6+IGbYdJhF31t2eR1BIU0CYc12+BNAKwUTag=
-github.com/gaissmai/bart v0.28.0 h1:89yZLo8NmyqD0RYgJ3QO9HhqqGGw+oWhf90cZm69Lko=
-github.com/gaissmai/bart v0.28.0/go.mod h1:GREWQfTLRWz/c5FTOsIw+KkscuFkIV5t8Rp7Nd1Td5c=
+github.com/gaissmai/bart v0.25.0 h1:eqiokVPqM3F94vJ0bTHXHtH91S8zkKL+bKh+BsGOsJM=
+github.com/gaissmai/bart v0.25.0/go.mod h1:GREWQfTLRWz/c5FTOsIw+KkscuFkIV5t8Rp7Nd1Td5c=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
@@ -85,10 +83,10 @@ github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
-github.com/miekg/dns v1.1.72 h1:vhmr+TF2A3tuoGNkLDFK9zi36F2LS+hKTRW0Uf8kbzI=
-github.com/miekg/dns v1.1.72/go.mod h1:+EuEPhdHOsfk6Wk5TT2CzssZdqkmFhf8r+aVyDEToIs=
-github.com/miekg/pkcs11 v1.1.2 h1:/VxmeAX5qU6Q3EwafypogwWbYryHFmF2RpkJmw3m4MQ=
-github.com/miekg/pkcs11 v1.1.2/go.mod h1:XsNlhZGX73bx86s2hdc/FuaLm2CPZJemRLMA+WTFxgs=
+github.com/miekg/dns v1.1.68 h1:jsSRkNozw7G/mnmXULynzMNIsgY2dHC8LO6U6Ij2JEA=
+github.com/miekg/dns v1.1.68/go.mod h1:fujopn7TB3Pu3JM69XaawiU0wqjpL9/8xGop5UrTPps=
+github.com/miekg/pkcs11 v1.1.2-0.20231115102856-9078ad6b9d4b h1:J/AzCvg5z0Hn1rqZUJjpbzALUmkKX0Zwbc/i4fw7Sfk=
+github.com/miekg/pkcs11 v1.1.2-0.20231115102856-9078ad6b9d4b/go.mod h1:XsNlhZGX73bx86s2hdc/FuaLm2CPZJemRLMA+WTFxgs=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
@@ -133,6 +131,8 @@ github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncj
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e h1:MRM5ITcdelLK2j1vwZ3Je0FKVCfqOLp5zO6trqMLYs0=
 github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e/go.mod h1:XV66xRDqSt+GTGFMVlhk3ULuV0y9ZmzeVGR4mloJI3M=
 github.com/stefanberger/go-pkcs11uri v0.0.0-20230803200340-78284954bff6 h1:pnnLyeX7o/5aX8qUQ69P/mLojDqwda8hFOCBTmP/6hw=
@@ -155,23 +155,21 @@ go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
 go.yaml.in/yaml/v2 v2.4.2 h1:DzmwEr2rDGHl7lsFgAHxmNz/1NlQ7xLIrlN2h5d1eGI=
 go.yaml.in/yaml/v2 v2.4.2/go.mod h1:081UH+NErpNdqlCXm3TtEran0rJZGxAYx9hb/ELlsPU=
-go.yaml.in/yaml/v3 v3.0.4 h1:tfq32ie2Jv2UxXFdLJdh3jXuOzWiL1fo0bu/FbuKpbc=
-go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
-golang.org/x/crypto v0.53.0 h1:QZ4Muo8THX6CizN2vPPd5fBGHyogrdK9fG4wLPFUsto=
-golang.org/x/crypto v0.53.0/go.mod h1:DNLU434OwVakk9PzuwV8w62mAJpRJL3vsgcfp4Qnsio=
+golang.org/x/crypto v0.43.0 h1:dduJYIi3A3KOfdGOHX8AVZ/jGiyPa3IbBozJ5kNuE04=
+golang.org/x/crypto v0.43.0/go.mod h1:BFbav4mRNlXJL4wNeejLpWxB7wMbc79PdRGhWKncxR0=
 golang.org/x/exp v0.0.0-20230725093048-515e97ebf090 h1:Di6/M8l0O2lCLc6VVRWhgCiApHV8MnQurBnFSHsQtNY=
 golang.org/x/exp v0.0.0-20230725093048-515e97ebf090/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.34.0 h1:xIHgNUUnW6sYkcM5Jleh05DvLOtwc6RitGHbDk4akRI=
-golang.org/x/mod v0.34.0/go.mod h1:ykgH52iCZe79kzLLMhyCUzhMci+nQj+0XkbXpNYtVjY=
+golang.org/x/mod v0.24.0 h1:ZfthKaKaT4NrhGVZHO1/WDTwGES4De8KtWO0SIbNJMU=
+golang.org/x/mod v0.24.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -182,8 +180,8 @@ golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.56.0 h1:Rw8j/hFzGvJUZwNBXnAtf5sVDVt+65SK2C7IxCxZt5o=
-golang.org/x/net v0.56.0/go.mod h1:D3Ku6r+V6JROoZK144D2XfMHFcMq/0zSfLelVTCFKec=
+golang.org/x/net v0.45.0 h1:RLBg5JKixCy82FtLJpeNlVM0nrSqpCRYzVU1n8kj0tM=
+golang.org/x/net v0.45.0/go.mod h1:ECOoLqd5U3Lhyeyo/QDCEVQ4sNgYsqvCZ722XogGieY=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -191,8 +189,8 @@ golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
-golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
+golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -206,13 +204,14 @@ golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.46.0 h1:noSf2Fq6F8DBgS+LysIkx7rIExoNHJsxOAtPp4rthXw=
-golang.org/x/sys v0.46.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.37.0 h1:fdNQudmxPjkdUTPnLn5mdQv7Zwvbvpaxqs831goi9kQ=
+golang.org/x/sys v0.37.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.44.0 h1:0rLvDRCtNj0gZkyIXhCyOb2OAzEhLVqc4B+hrsBhrmc=
-golang.org/x/term v0.44.0/go.mod h1:7ze4MdzUzLXpSAoFP1H0bOI9aXDqveSvatT5vKcFh2Y=
+golang.org/x/term v0.36.0 h1:zMPR+aF8gfksFprF/Nc/rd1wRS1EI6nDBGyWAvDzx2Q=
+golang.org/x/term v0.36.0/go.mod h1:Qu394IJq6V6dCBRgwqshf3mPF85AqzYEzofzRdZkWss=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -223,8 +222,8 @@ golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
-golang.org/x/tools v0.43.0 h1:12BdW9CeB3Z+J/I/wj34VMl8X+fEXBxVR90JeMX5E7s=
-golang.org/x/tools v0.43.0/go.mod h1:uHkMso649BX2cZK6+RpuIPXS3ho2hZo4FVwfoy1vIk0=
+golang.org/x/tools v0.33.0 h1:4qz2S3zmRxbGIhDIAgjxvFutSvH5EfnsYrRBj0UI0bc=
+golang.org/x/tools v0.33.0/go.mod h1:CIJMaWEY88juyUfo7UbgPqbC8rU2OqfAV1h2Qp0oMYI=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -233,8 +232,8 @@ golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 h1:B82qJJgjvYKsXS9jeu
 golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
 golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b h1:J1CaxgLerRR5lgx3wnr6L04cJFbWoceSK9JWBdglINo=
 golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b/go.mod h1:tqur9LnfstdR9ep2LaJT4lFUl0EjlHtge+gAjmsHUG4=
-golang.zx2c4.com/wireguard/windows v0.6.1 h1:XMaKojH1Hs/raMrmnir4n35nTvzvWj7NmSYzHn2F4qU=
-golang.zx2c4.com/wireguard/windows v0.6.1/go.mod h1:04aqInu5GYuTFvMuDw/rKBAF7mHrltW/3rekpfbbZDM=
+golang.zx2c4.com/wireguard/windows v0.5.3 h1:On6j2Rpn3OEMXqBq00QEDC7bWSZrPIHKIus8eIuExIE=
+golang.zx2c4.com/wireguard/windows v0.5.3/go.mod h1:9TEe8TJmtwyQebdFwAkEWOPr3prrtqm+REGFifP60hI=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -243,8 +242,8 @@ google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miE
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
-google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
+google.golang.org/protobuf v1.36.8 h1:xHScyCOEuuwZEc6UtSOvPbAT4zRh0xcNRYekJwfqyMc=
+google.golang.org/protobuf v1.36.8/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

handshake/credential.go

@@ -1,57 +0,0 @@
-package handshake
-
-import (
-	"crypto/rand"
-
-	"github.com/flynn/noise"
-	"github.com/slackhq/nebula/cert"
-)
-
-// Credential holds everything needed to participate in a handshake
-// at a given cert version. Version and Curve are read from Cert; the public
-// half of the static keypair likewise comes from Cert.PublicKey().
-type Credential struct {
-	Cert        cert.Certificate  // the certificate
-	Bytes       []byte            // pre-marshaled certificate bytes
-	privateKey  []byte            // static private key (public half lives in Cert)
-	cipherSuite noise.CipherSuite // pre-built cipher suite (DH + cipher + hash)
-}
-
-// NewCredential creates a Credential with all material needed for handshake
-// participation. The cipherSuite should be pre-built by the caller with the
-// appropriate DH function, cipher, and hash.
-func NewCredential(
-	c cert.Certificate,
-	hsBytes []byte,
-	privateKey []byte,
-	cipherSuite noise.CipherSuite,
-) *Credential {
-	return &Credential{
-		Cert:        c,
-		Bytes:       hsBytes,
-		privateKey:  privateKey,
-		cipherSuite: cipherSuite,
-	}
-}
-
-// buildHandshakeState creates a noise.HandshakeState from this credential.
-func (hc *Credential) buildHandshakeState(initiator bool, pattern noise.HandshakePattern) (*noise.HandshakeState, error) {
-	return noise.NewHandshakeState(noise.Config{
-		CipherSuite:           hc.cipherSuite,
-		Random:                rand.Reader,
-		Pattern:               pattern,
-		Initiator:             initiator,
-		StaticKeypair:         noise.DHKey{Private: hc.privateKey, Public: hc.Cert.PublicKey()},
-		PresharedKey:          []byte{},
-		PresharedKeyPlacement: 0,
-	})
-}
-
-// GetCredentialFunc returns the handshake credential for the given version,
-// or nil if that version is not available.
-//
-// Implementations must return credentials drawn from a snapshot stable for
-// the lifetime of any single Machine. The Machine may call this multiple
-// times during a handshake (e.g. when negotiating to the peer's version)
-// and assumes the underlying static keypair is consistent across calls.
-type GetCredentialFunc func(v cert.Version) *Credential

handshake/errors.go

@@ -1,22 +0,0 @@
-package handshake
-
-import "errors"
-
-var (
-	ErrInitiateOnResponder     = errors.New("initiate called on responder")
-	ErrInitiateAlreadyCalled   = errors.New("initiate already called")
-	ErrInitiateNotCalled       = errors.New("initiate must be called before ProcessPacket for initiators")
-	ErrPacketTooShort          = errors.New("packet too short")
-	ErrPublicKeyMismatch       = errors.New("public key mismatch between certificate and handshake")
-	ErrIncompleteHandshake     = errors.New("handshake completed without receiving required content")
-	ErrMachineFailed           = errors.New("handshake machine has failed")
-	ErrUnknownSubtype          = errors.New("unknown handshake subtype")
-	ErrMissingContent          = errors.New("expected handshake content but message was empty")
-	ErrUnexpectedContent       = errors.New("received unexpected handshake content")
-	ErrInvalidRemoteIndex      = errors.New("peer sent an invalid index in handshake payload")
-	ErrIndexAllocation         = errors.New("failed to allocate local index")
-	ErrNoCredential            = errors.New("no handshake credential available for cert version")
-	ErrAsymmetricCipherKeys    = errors.New("noise produced only one cipher key")
-	ErrMultiMessageUnsupported = errors.New("multi-message handshake patterns are not yet supported by the manager")
-	ErrSubtypeMismatch         = errors.New("packet subtype does not match handshake machine subtype")
-)

handshake/handshake.proto

@@ -1,29 +0,0 @@
-// This file documents the wire format the nebula handshake speaks. It is
-// not run through protoc; the encoder/decoder in payload.go is hand-written
-// against this shape directly to keep the parser narrow and panic-free.
-//
-// Any change to the wire format must be reflected here, and adding a new
-// field requires updating MarshalPayload / unmarshalPayloadDetails together
-// with the field-uniqueness and wire-type checks in those functions.
-
-syntax = "proto3";
-package nebula.handshake;
-
-message NebulaHandshake {
-  NebulaHandshakeDetails Details = 1;
-  bytes Hmac = 2;
-}
-
-message NebulaHandshakeDetails {
-  bytes Cert = 1;
-  uint32 InitiatorIndex = 2;
-  uint32 ResponderIndex = 3;
-  // Cookie was reserved for an anti-DoS mechanism that was never
-  // implemented. No released version of nebula has ever populated it; the
-  // hand-written parser silently skips it on read.
-  uint64 Cookie = 4 [deprecated = true];
-  uint64 Time = 5;
-  uint32 CertVersion = 8;
-  // reserved for WIP multiport
-  reserved 6, 7;
-}

handshake/helpers_test.go

@@ -1,116 +0,0 @@
-package handshake
-
-import (
-	"net/netip"
-	"testing"
-	"time"
-
-	"github.com/flynn/noise"
-	"github.com/slackhq/nebula/cert"
-	ct "github.com/slackhq/nebula/cert_test"
-	"github.com/slackhq/nebula/header"
-	"github.com/stretchr/testify/require"
-)
-
-// testCertState holds cert material for a test peer.
-type testCertState struct {
-	version cert.Version
-	creds   map[cert.Version]*Credential
-}
-
-func (s *testCertState) getCredential(v cert.Version) *Credential {
-	return s.creds[v]
-}
-
-func newTestCertState(
-	t *testing.T, ca cert.Certificate, caKey []byte, name string, networks []netip.Prefix,
-) *testCertState {
-	return newTestCertStateWithCipher(t, ca, caKey, name, networks, noise.CipherChaChaPoly)
-}
-
-func newTestCertStateWithCipher(
-	t *testing.T, ca cert.Certificate, caKey []byte, name string, networks []netip.Prefix,
-	cipher noise.CipherFunc,
-) *testCertState {
-	t.Helper()
-	c, _, rawPrivKey, _ := ct.NewTestCert(
-		cert.Version2, cert.Curve_CURVE25519, ca, caKey,
-		name, ca.NotBefore(), ca.NotAfter(), networks, nil, nil,
-	)
-
-	priv, _, _, err := cert.UnmarshalPrivateKeyFromPEM(rawPrivKey)
-	require.NoError(t, err)
-
-	hsBytes, err := c.MarshalForHandshakes()
-	require.NoError(t, err)
-
-	ncs := noise.NewCipherSuite(noise.DH25519, cipher, noise.HashSHA256)
-	return &testCertState{
-		version: cert.Version2,
-		creds: map[cert.Version]*Credential{
-			cert.Version2: NewCredential(c, hsBytes, priv, ncs),
-		},
-	}
-}
-
-func testVerifier(pool *cert.CAPool) CertVerifier {
-	return func(c cert.Certificate) (*cert.CachedCertificate, error) {
-		return pool.VerifyCertificate(time.Now(), c)
-	}
-}
-
-func newTestMachine(
-	t *testing.T,
-	cs *testCertState,
-	verifier CertVerifier,
-	initiator bool,
-	localIndex uint32,
-) *Machine {
-	t.Helper()
-	m, err := NewMachine(
-		cs.version, cs.getCredential,
-		verifier, func() (uint32, error) { return localIndex, nil },
-		initiator, header.HandshakeIXPSK0,
-	)
-	require.NoError(t, err)
-	return m
-}
-
-func initiateHandshake(
-	t *testing.T,
-	initCS *testCertState, initVerifier CertVerifier,
-	respCS *testCertState, respVerifier CertVerifier,
-) (initM, respM *Machine, respResult *Result, resp []byte, err error) {
-	t.Helper()
-	initM = newTestMachine(t, initCS, initVerifier, true, 100)
-	msg1, merr := initM.Initiate(nil)
-	require.NoError(t, merr)
-
-	respM = newTestMachine(t, respCS, respVerifier, false, 200)
-	resp, respResult, err = respM.ProcessPacket(nil, msg1)
-	return
-}
-
-func doFullHandshake(
-	t *testing.T, initCS, respCS *testCertState, caPool *cert.CAPool,
-) (initResult, respResult *Result) {
-	t.Helper()
-	v := testVerifier(caPool)
-
-	initM := newTestMachine(t, initCS, v, true, 1000)
-	respM := newTestMachine(t, respCS, v, false, 2000)
-
-	msg1, err := initM.Initiate(nil)
-	require.NoError(t, err)
-
-	resp, respResult, err := respM.ProcessPacket(nil, msg1)
-	require.NoError(t, err)
-	require.NotNil(t, respResult)
-	require.NotEmpty(t, resp)
-
-	_, initResult, err = initM.ProcessPacket(nil, resp)
-	require.NoError(t, err)
-	require.NotNil(t, initResult)
-
-	return initResult, respResult
-}

handshake/machine.go

@@ -1,454 +0,0 @@
-package handshake
-
-import (
-	"bytes"
-	"fmt"
-	"slices"
-	"time"
-
-	"github.com/flynn/noise"
-	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/header"
-)
-
-// IndexAllocator is called by the Machine to allocate a local index for the
-// handshake. It is called at most once, when the first outgoing message that
-// carries a payload is built.
-//
-// Implementations MUST NOT return 0. Zero is reserved as a sentinel meaning
-// "no index assigned" on the wire and in the payload-presence checks. If an
-// allocator ever returned 0, a legitimate handshake's payload could be
-// indistinguishable from an empty one and would be rejected.
-type IndexAllocator func() (uint32, error)
-
-// CertVerifier is called by the Machine after reconstructing the peer's
-// certificate from the handshake. The verifier performs all validation
-// (CA trust, expiry, policy checks, allow lists).
-type CertVerifier func(cert.Certificate) (*cert.CachedCertificate, error)
-
-// Result contains the results of a successful handshake.
-// Returned by ProcessPacket when the handshake is complete.
-type Result struct {
-	EKey          *noise.CipherState
-	DKey          *noise.CipherState
-	Cipher        noise.CipherFunc // identifies which post-handshake CipherState the data plane should wrap EKey/DKey in
-	MyCert        cert.Certificate
-	RemoteCert    *cert.CachedCertificate
-	RemoteIndex   uint32
-	LocalIndex    uint32
-	HandshakeTime uint64
-	MessageIndex  uint64 // number of messages exchanged during the handshake
-	Initiator     bool
-}
-
-// Machine drives a Noise handshake through N messages. It handles Noise
-// protocol operations, certificate reconstruction, and payload encoding.
-// Certificate validation is delegated to the caller via CertVerifier.
-//
-// A Machine is not safe for concurrent use. The caller must ensure that
-// Initiate and ProcessPacket are not called concurrently.
-//
-// Error contract: when ProcessPacket or Initiate returns an error, callers
-// must check Failed() to decide what to do next. If Failed() is false the
-// underlying noise state was not advanced (the packet was rejected before
-// ReadMessage took effect, or the rejection is non-fatal like a stale
-// retransmit) and the Machine can accept another packet. If Failed() is
-// true the Machine is unrecoverable and the caller must abandon it.
-type Machine struct {
-	hs             *noise.HandshakeState
-	getCred        GetCredentialFunc
-	allocIndex     IndexAllocator
-	verifier       CertVerifier
-	result         *Result
-	msgs           []msgFlags
-	myVersion      cert.Version
-	subtype        header.MessageSubType
-	indexAllocated bool
-	remoteCertSet  bool
-	payloadSet     bool
-	failed         bool
-}
-
-// NewMachine creates a handshake state machine. The subtype determines both
-// the noise pattern and the per-message content layout. The credential for
-// `version` is fetched via getCred and used to seed the noise.HandshakeState.
-// IndexAllocator is called lazily when the first outgoing payload is built.
-func NewMachine(
-	version cert.Version,
-	getCred GetCredentialFunc,
-	verifier CertVerifier,
-	allocIndex IndexAllocator,
-	initiator bool,
-	subtype header.MessageSubType,
-) (*Machine, error) {
-	info, err := subtypeInfoFor(subtype)
-	if err != nil {
-		return nil, err
-	}
-
-	cred := getCred(version)
-	if cred == nil {
-		return nil, fmt.Errorf("%w: %v", ErrNoCredential, version)
-	}
-
-	hs, err := cred.buildHandshakeState(initiator, info.pattern)
-	if err != nil {
-		return nil, fmt.Errorf("build noise state: %w", err)
-	}
-
-	return &Machine{
-		hs:         hs,
-		subtype:    subtype,
-		msgs:       info.msgs,
-		getCred:    getCred,
-		allocIndex: allocIndex,
-		verifier:   verifier,
-		myVersion:  version,
-		result: &Result{
-			Initiator: initiator,
-			Cipher:    cred.cipherSuite,
-		},
-	}, nil
-}
-
-// Failed returns true if the Machine is in an unrecoverable state.
-func (m *Machine) Failed() bool {
-	return m.failed
-}
-
-// Subtype returns the handshake subtype this Machine was built for.
-func (m *Machine) Subtype() header.MessageSubType {
-	return m.subtype
-}
-
-// MessageIndex returns the noise handshake message index, which equals the
-// wire counter of the most recently sent or received message.
-func (m *Machine) MessageIndex() int {
-	return m.hs.MessageIndex()
-}
-
-// requireComplete checks that both a peer cert and payload have been received.
-// Marks the machine as failed if not.
-func (m *Machine) requireComplete() error {
-	if !m.payloadSet || !m.remoteCertSet {
-		m.failed = true
-		return ErrIncompleteHandshake
-	}
-	return nil
-}
-
-// myMsgFlags returns the flags for the current outgoing message.
-func (m *Machine) myMsgFlags() msgFlags {
-	idx := m.hs.MessageIndex()
-	if idx < len(m.msgs) {
-		return m.msgs[idx]
-	}
-	return msgFlags{}
-}
-
-// peerMsgFlags returns the flags for the message we just read.
-func (m *Machine) peerMsgFlags() msgFlags {
-	idx := m.hs.MessageIndex() - 1
-	if idx >= 0 && idx < len(m.msgs) {
-		return m.msgs[idx]
-	}
-	return msgFlags{}
-}
-
-// Initiate produces the first handshake message. Only valid for initiators,
-// and must be called exactly once before ProcessPacket.
-//
-// out is a destination buffer the message is appended to and returned. Pass
-// nil to allocate fresh, or pass a re-used buffer sliced to length 0 (e.g.
-// buf[:0]) with sufficient capacity to avoid allocation.
-//
-// An error return may not indicate a fatal condition, check Failed() to
-// determine if the Machine can still be used.
-func (m *Machine) Initiate(out []byte) ([]byte, error) {
-	if m.failed {
-		return nil, ErrMachineFailed
-	}
-	if !m.result.Initiator {
-		m.failed = true
-		return nil, ErrInitiateOnResponder
-	}
-	if m.hs.MessageIndex() != 0 {
-		m.failed = true
-		return nil, ErrInitiateAlreadyCalled
-	}
-
-	// At MessageIndex=0 with RemoteIndex still zero, buildResponse produces
-	// header counter 1 and remote index 0, which is what the initial message needs.
-	out, _, _, err := m.buildResponse(out)
-	if err != nil {
-		m.failed = true
-		return nil, err
-	}
-	return out, nil
-}
-
-// ProcessPacket handles an incoming handshake message. It advances the Noise
-// state, validates the peer certificate via the verifier, and optionally
-// produces a response.
-//
-// out is a destination buffer the response is appended to and returned. Pass
-// nil to allocate fresh, or pass a re-used buffer sliced to length 0 (e.g.
-// buf[:0]) with sufficient capacity to avoid allocation. The returned slice
-// is nil when no outgoing message is produced (handshake complete on this
-// side, or final message of a multi-message pattern).
-//
-// Returns a non-nil Result when the handshake is complete.
-// An error return may not indicate a fatal condition, check Failed() to
-// determine if the Machine can still be used.
-func (m *Machine) ProcessPacket(out, packet []byte) ([]byte, *Result, error) {
-	if m.failed {
-		return nil, nil, ErrMachineFailed
-	}
-	if len(packet) < header.Len {
-		return nil, nil, ErrPacketTooShort
-	}
-	// Reject packets whose subtype doesn't match the one this Machine was
-	// built for. A pending handshake that suddenly receives a different
-	// subtype on its index is either a stray packet that matched by chance
-	// or a peer protocol violation; drop it without failing the Machine so
-	// the legitimate retransmit can still complete.
-	if header.MessageSubType(packet[1]) != m.subtype {
-		return nil, nil, ErrSubtypeMismatch
-	}
-	if m.result.Initiator && m.hs.MessageIndex() == 0 {
-		m.failed = true
-		return nil, nil, ErrInitiateNotCalled
-	}
-
-	// The (eKey, dKey) ordering here is correct for IX, where the initiator
-	// completes the handshake by reading the responder's stage-2 message.
-	// noise returns (cs1, cs2) where cs1 is the initiator->responder cipher.
-	// For 3-message patterns where a responder finishes by reading the final
-	// message, this ordering would be wrong; revisit when XX/pqIX lands.
-	msg, eKey, dKey, err := m.hs.ReadMessage(nil, packet[header.Len:])
-	if err != nil {
-		// Noise ReadMessage failed. The noise library checkpoints and rolls back
-		// on failure, so the Machine is still alive. The caller can retry with
-		// a different packet.
-		return nil, nil, fmt.Errorf("noise ReadMessage: %w", err)
-	}
-
-	// From here on, noise state has advanced. Any error is fatal.
-	flags := m.peerMsgFlags()
-
-	if err := m.processPayload(msg, flags); err != nil {
-		return nil, nil, err
-	}
-
-	// If ReadMessage derived keys, the handshake is complete. Noise should
-	// always produce both keys together; asymmetry is a protocol invariant
-	// violation.
-	if eKey != nil || dKey != nil {
-		if eKey == nil || dKey == nil {
-			m.failed = true
-			return nil, nil, ErrAsymmetricCipherKeys
-		}
-		if err := m.requireComplete(); err != nil {
-			return nil, nil, err
-		}
-		return nil, m.completed(eKey, dKey), nil
-	}
-
-	// ReadMessage didn't complete, produce the next outgoing message
-	out, dk, ek, err := m.buildResponse(out)
-	if err != nil {
-		m.failed = true
-		return nil, nil, err
-	}
-
-	if ek != nil || dk != nil {
-		if ek == nil || dk == nil {
-			m.failed = true
-			return nil, nil, ErrAsymmetricCipherKeys
-		}
-		if err := m.requireComplete(); err != nil {
-			return nil, nil, err
-		}
-		return out, m.completed(ek, dk), nil
-	}
-
-	return out, nil, nil
-}
-
-func (m *Machine) completed(eKey, dKey *noise.CipherState) *Result {
-	m.result.EKey = eKey
-	m.result.DKey = dKey
-	m.result.MessageIndex = uint64(m.hs.MessageIndex())
-	return m.result
-}
-
-func (m *Machine) processPayload(msg []byte, flags msgFlags) error {
-	if len(msg) == 0 {
-		if flags.expectsPayload || flags.expectsCert {
-			m.failed = true
-			return ErrMissingContent
-		}
-		return nil
-	}
-
-	payload, err := UnmarshalPayload(msg)
-	if err != nil {
-		m.failed = true
-		return fmt.Errorf("unmarshal handshake: %w", err)
-	}
-
-	// Assert the payload contains exactly what we expect
-	hasPayloadData := payload.InitiatorIndex != 0 || payload.ResponderIndex != 0 || payload.Time != 0
-	if hasPayloadData != flags.expectsPayload {
-		m.failed = true
-		return ErrUnexpectedContent
-	}
-
-	hasCertData := len(payload.Cert) > 0
-	if hasCertData != flags.expectsCert {
-		m.failed = true
-		return ErrUnexpectedContent
-	}
-
-	// Process payload
-	if flags.expectsPayload {
-		var remoteIndex uint32
-		if m.result.Initiator {
-			remoteIndex = payload.ResponderIndex
-		} else {
-			remoteIndex = payload.InitiatorIndex
-		}
-		// The payload presence check above can be satisfied by Time alone, so a payload
-		// could still carry a zero index here. We need to reject it.
-		if remoteIndex == 0 {
-			m.failed = true
-			return ErrInvalidRemoteIndex
-		}
-		m.result.RemoteIndex = remoteIndex
-		m.result.HandshakeTime = payload.Time
-		m.payloadSet = true
-	}
-
-	// Process certificate
-	if flags.expectsCert {
-		if err := m.validateCert(payload); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (m *Machine) validateCert(payload Payload) error {
-	cred := m.getCred(m.myVersion)
-	if cred == nil {
-		m.failed = true
-		return fmt.Errorf("%w: %v", ErrNoCredential, m.myVersion)
-	}
-	rc, err := cert.Recombine(
-		cert.Version(payload.CertVersion),
-		payload.Cert,
-		m.hs.PeerStatic(),
-		cred.Cert.Curve(),
-	)
-	if err != nil {
-		m.failed = true
-		return fmt.Errorf("recombine cert: %w", err)
-	}
-
-	if !bytes.Equal(rc.PublicKey(), m.hs.PeerStatic()) {
-		m.failed = true
-		return ErrPublicKeyMismatch
-	}
-
-	// Version negotiation, if the peer sent a different version and we have it, switch
-	if rc.Version() != m.myVersion {
-		if m.getCred(rc.Version()) != nil {
-			m.myVersion = rc.Version()
-		}
-	}
-
-	verified, err := m.verifier(rc)
-	if err != nil {
-		m.failed = true
-		return fmt.Errorf("verify cert: %w", err)
-	}
-
-	m.result.RemoteCert = verified
-	m.remoteCertSet = true
-	return nil
-}
-
-func (m *Machine) marshalOutgoing(flags msgFlags) ([]byte, error) {
-	if !flags.expectsPayload && !flags.expectsCert {
-		return nil, nil
-	}
-
-	var p Payload
-	if flags.expectsPayload {
-		if !m.indexAllocated {
-			index, err := m.allocIndex()
-			if err != nil {
-				return nil, fmt.Errorf("%w: %w", ErrIndexAllocation, err)
-			}
-			m.result.LocalIndex = index
-			m.indexAllocated = true
-		}
-
-		if m.result.Initiator {
-			p.InitiatorIndex = m.result.LocalIndex
-		} else {
-			p.ResponderIndex = m.result.LocalIndex
-			p.InitiatorIndex = m.result.RemoteIndex
-		}
-		p.Time = uint64(time.Now().UnixNano())
-	}
-	if flags.expectsCert {
-		cred := m.getCred(m.myVersion)
-		if cred == nil {
-			return nil, fmt.Errorf("%w: %v", ErrNoCredential, m.myVersion)
-		}
-		p.Cert = cred.Bytes
-		p.CertVersion = uint32(cred.Cert.Version())
-		m.result.MyCert = cred.Cert
-	}
-
-	return MarshalPayload(nil, p), nil
-}
-
-func (m *Machine) buildResponse(out []byte) ([]byte, *noise.CipherState, *noise.CipherState, error) {
-	flags := m.myMsgFlags()
-	hsBytes, err := m.marshalOutgoing(flags)
-	if err != nil {
-		return nil, nil, nil, err
-	}
-
-	// Extend out by header.Len to make room for the header. slices.Grow is a
-	// no-op when the cap is already sufficient (the zero-copy case where the
-	// caller passed a pre-sized buffer). header.Encode overwrites the new
-	// bytes, so they don't need to be zeroed.
-	start := len(out)
-	out = slices.Grow(out, header.Len)[:start+header.Len]
-	header.Encode(
-		out[start:],
-		header.Version, header.Handshake, m.subtype,
-		m.result.RemoteIndex,
-		uint64(m.hs.MessageIndex()+1),
-	)
-
-	// noise.WriteMessage appends the encrypted handshake message to out,
-	// reusing capacity when present.
-	//
-	// The (dKey, eKey) ordering here is correct for IX, where the responder
-	// completes the handshake by writing the stage-2 message. noise returns
-	// (cs1, cs2) where cs1 is the initiator->responder cipher (which is the
-	// responder's decrypt key). For 3-message patterns where an initiator
-	// finishes by writing the final message, this ordering would be wrong;
-	// revisit when XX/pqIX lands.
-	out, dKey, eKey, err := m.hs.WriteMessage(out, hsBytes)
-	if err != nil {
-		return nil, nil, nil, fmt.Errorf("noise WriteMessage: %w", err)
-	}
-
-	return out, dKey, eKey, nil
-}

handshake/machine_test.go

@@ -1,680 +0,0 @@
-package handshake
-
-import (
-	"net/netip"
-	"testing"
-	"time"
-
-	"github.com/flynn/noise"
-	"github.com/slackhq/nebula/cert"
-	ct "github.com/slackhq/nebula/cert_test"
-	"github.com/slackhq/nebula/header"
-	"github.com/slackhq/nebula/noiseutil"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestMachineIXHappyPath(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-
-	initCS := newTestCertState(t, ca, caKey, "initiator", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	respCS := newTestCertState(t, ca, caKey, "responder", []netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")})
-
-	initR, respR := doFullHandshake(t, initCS, respCS, caPool)
-
-	assert.Equal(t, "responder", initR.RemoteCert.Certificate.Name())
-	assert.Equal(t, "initiator", respR.RemoteCert.Certificate.Name())
-
-	assert.Equal(t, uint32(1000), initR.LocalIndex)
-	assert.Equal(t, uint32(2000), initR.RemoteIndex)
-	assert.Equal(t, uint32(2000), respR.LocalIndex)
-	assert.Equal(t, uint32(1000), respR.RemoteIndex)
-
-	assert.Equal(t, uint64(2), initR.MessageIndex, "IX has 2 messages")
-	assert.Equal(t, uint64(2), respR.MessageIndex, "IX has 2 messages")
-
-	ct1, err := initR.EKey.Encrypt(nil, nil, []byte("hello"))
-	require.NoError(t, err)
-	pt1, err := respR.DKey.Decrypt(nil, nil, ct1)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("hello"), pt1)
-
-	ct2, err := respR.EKey.Encrypt(nil, nil, []byte("world"))
-	require.NoError(t, err)
-	pt2, err := initR.DKey.Decrypt(nil, nil, ct2)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("world"), pt2)
-}
-
-func TestMachineInitiateErrors(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-	cs := newTestCertState(t, ca, caKey, "test", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	v := testVerifier(caPool)
-
-	t.Run("initiate on responder", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		_, err := m.Initiate(nil)
-		require.ErrorIs(t, err, ErrInitiateOnResponder)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("initiate called twice", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, true, 100)
-		_, err := m.Initiate(nil)
-		require.NoError(t, err)
-		_, err = m.Initiate(nil)
-		require.ErrorIs(t, err, ErrInitiateAlreadyCalled)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("process packet before initiate on initiator", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, true, 100)
-		_, _, err := m.ProcessPacket(nil, make([]byte, 100))
-		require.ErrorIs(t, err, ErrInitiateNotCalled)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("calling failed machine", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		_, err := m.Initiate(nil) // fails: responder
-		require.Error(t, err)
-		_, err = m.Initiate(nil) // fails: already failed
-		require.ErrorIs(t, err, ErrMachineFailed)
-	})
-}
-
-func TestMachineProcessPacketErrors(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-	cs := newTestCertState(t, ca, caKey, "test", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	v := testVerifier(caPool)
-
-	t.Run("packet too short", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		_, _, err := m.ProcessPacket(nil, []byte{1, 2, 3})
-		require.ErrorIs(t, err, ErrPacketTooShort)
-		assert.False(t, m.Failed(), "short packet should not kill machine")
-	})
-
-	t.Run("noise decryption failure is recoverable", func(t *testing.T) {
-		initCS := newTestCertState(t, ca, caKey, "init", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-		initM := newTestMachine(t, initCS, v, true, 100)
-		msg1, err := initM.Initiate(nil)
-		require.NoError(t, err)
-
-		respM := newTestMachine(t, cs, v, false, 200)
-		resp, _, err := respM.ProcessPacket(nil, msg1)
-		require.NoError(t, err)
-
-		corrupted := make([]byte, len(resp))
-		copy(corrupted, resp)
-		for i := header.Len; i < len(corrupted); i++ {
-			corrupted[i] ^= 0xff
-		}
-		_, _, err = initM.ProcessPacket(nil, corrupted)
-		require.Error(t, err)
-		assert.False(t, initM.Failed(), "noise failure should be recoverable")
-
-		// And the machine should still complete a real handshake afterward.
-		_, result, err := initM.ProcessPacket(nil, resp)
-		require.NoError(t, err)
-		require.NotNil(t, result, "initiator should complete on the legitimate response")
-	})
-
-	t.Run("invalid cert is fatal", func(t *testing.T) {
-		otherCA, _, otherCAKey, _ := ct.NewTestCaCert(
-			cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-		)
-		otherCS := newTestCertState(t, otherCA, otherCAKey, "other", []netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")})
-
-		initM := newTestMachine(t, otherCS, testVerifier(ct.NewTestCAPool(otherCA)), true, 100)
-		msg1, err := initM.Initiate(nil)
-		require.NoError(t, err)
-
-		respM := newTestMachine(t, cs, v, false, 200)
-		_, _, err = respM.ProcessPacket(nil, msg1)
-		require.Error(t, err)
-		assert.True(t, respM.Failed(), "cert validation failure should kill machine")
-	})
-
-	t.Run("subtype mismatch is recoverable", func(t *testing.T) {
-		initCS := newTestCertState(t, ca, caKey, "init", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-		initM := newTestMachine(t, initCS, v, true, 100)
-		msg1, err := initM.Initiate(nil)
-		require.NoError(t, err)
-
-		// Mutate the subtype byte (offset 1 in the header) to a value the
-		// responder Machine wasn't built for.
-		bad := make([]byte, len(msg1))
-		copy(bad, msg1)
-		bad[1] = 0xff
-
-		respM := newTestMachine(t, cs, v, false, 200)
-		_, _, err = respM.ProcessPacket(nil, bad)
-		require.ErrorIs(t, err, ErrSubtypeMismatch)
-		assert.False(t, respM.Failed(), "subtype mismatch should not kill the machine")
-
-		// And the machine should still complete a real handshake afterward.
-		resp, result, err := respM.ProcessPacket(nil, msg1)
-		require.NoError(t, err)
-		require.NotNil(t, result, "responder should complete on the legitimate stage-1 packet")
-		assert.NotEmpty(t, resp, "responder should produce a stage-2 reply")
-	})
-}
-
-// TestMachineProcessPayload exercises processPayload's internal validation
-// directly. Most of these failure modes can't be reached black-box once the
-// subtype check at the top of ProcessPacket gates external callers, so we
-// drive them by hand here for coverage.
-func TestMachineProcessPayload(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-	cs := newTestCertState(t, ca, caKey, "test", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	v := testVerifier(caPool)
-
-	t.Run("empty message with expects fails", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		err := m.processPayload(nil, msgFlags{expectsPayload: true, expectsCert: true})
-		require.ErrorIs(t, err, ErrMissingContent)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("empty message with no expects passes", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		err := m.processPayload(nil, msgFlags{})
-		require.NoError(t, err)
-		assert.False(t, m.Failed())
-	})
-
-	t.Run("malformed protobuf is fatal", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		err := m.processPayload([]byte{0xff, 0xff, 0xff}, msgFlags{expectsPayload: true, expectsCert: true})
-		require.Error(t, err)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("unexpected payload data is fatal", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		// A payload with index data when none was expected.
-		bytes := MarshalPayload(nil, Payload{InitiatorIndex: 42, Time: 1})
-		err := m.processPayload(bytes, msgFlags{expectsPayload: false, expectsCert: false})
-		require.ErrorIs(t, err, ErrUnexpectedContent)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("unexpected cert data is fatal", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		// A payload with cert when none was expected.
-		bytes := MarshalPayload(nil, Payload{Cert: []byte{1, 2, 3}, CertVersion: 2})
-		err := m.processPayload(bytes, msgFlags{expectsPayload: false, expectsCert: false})
-		require.ErrorIs(t, err, ErrUnexpectedContent)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("missing payload data when expected is fatal", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		// Cert present, but no index/time fields.
-		bytes := MarshalPayload(nil, Payload{Cert: []byte{1, 2, 3}, CertVersion: 2})
-		err := m.processPayload(bytes, msgFlags{expectsPayload: true, expectsCert: true})
-		require.ErrorIs(t, err, ErrUnexpectedContent)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("zero initiator index on responder is fatal", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		bytes := MarshalPayload(nil, Payload{InitiatorIndex: 0, Time: 1})
-		err := m.processPayload(bytes, msgFlags{expectsPayload: true})
-		require.ErrorIs(t, err, ErrInvalidRemoteIndex)
-		assert.True(t, m.Failed())
-		assert.Zero(t, m.result.RemoteIndex)
-	})
-
-	t.Run("zero responder index on initiator is fatal", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, true, 100)
-		bytes := MarshalPayload(nil, Payload{InitiatorIndex: 100, ResponderIndex: 0, Time: 1})
-		err := m.processPayload(bytes, msgFlags{expectsPayload: true})
-		require.ErrorIs(t, err, ErrInvalidRemoteIndex)
-		assert.True(t, m.Failed())
-		assert.Zero(t, m.result.RemoteIndex)
-	})
-}
-
-// TestMachineRequireComplete checks the fail-on-incomplete-handshake path
-// directly. Like processPayload above this isn't reachable from a normal IX
-// flow, so we drive it by hand.
-func TestMachineRequireComplete(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-	cs := newTestCertState(t, ca, caKey, "test", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	v := testVerifier(caPool)
-
-	t.Run("missing both fails", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		err := m.requireComplete()
-		require.ErrorIs(t, err, ErrIncompleteHandshake)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("payload only fails", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		m.payloadSet = true
-		err := m.requireComplete()
-		require.ErrorIs(t, err, ErrIncompleteHandshake)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("cert only fails", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		m.remoteCertSet = true
-		err := m.requireComplete()
-		require.ErrorIs(t, err, ErrIncompleteHandshake)
-		assert.True(t, m.Failed())
-	})
-
-	t.Run("both set passes", func(t *testing.T) {
-		m := newTestMachine(t, cs, v, false, 100)
-		m.payloadSet = true
-		m.remoteCertSet = true
-		err := m.requireComplete()
-		require.NoError(t, err)
-		assert.False(t, m.Failed())
-	})
-}
-
-func TestMachineAESCipher(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-
-	initCS := newTestCertStateWithCipher(
-		t, ca, caKey, "init",
-		[]netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")},
-		noiseutil.CipherAESGCM,
-	)
-	respCS := newTestCertStateWithCipher(
-		t, ca, caKey, "resp",
-		[]netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")},
-		noiseutil.CipherAESGCM,
-	)
-
-	initR, respR := doFullHandshake(t, initCS, respCS, caPool)
-
-	ct1, err := initR.EKey.Encrypt(nil, nil, []byte("works"))
-	require.NoError(t, err)
-	pt1, err := respR.DKey.Decrypt(nil, nil, ct1)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("works"), pt1)
-
-	ct2, err := respR.EKey.Encrypt(nil, nil, []byte("back"))
-	require.NoError(t, err)
-	pt2, err := initR.DKey.Decrypt(nil, nil, ct2)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("back"), pt2)
-}
-
-func TestResultFields(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-	initCS := newTestCertState(t, ca, caKey, "init", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	respCS := newTestCertState(t, ca, caKey, "resp", []netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")})
-
-	initR, respR := doFullHandshake(t, initCS, respCS, caPool)
-
-	assert.True(t, initR.Initiator)
-	assert.False(t, respR.Initiator)
-	assert.NotZero(t, initR.HandshakeTime)
-	assert.NotZero(t, respR.HandshakeTime)
-	assert.NotNil(t, initR.RemoteCert)
-	assert.NotNil(t, respR.RemoteCert)
-}
-
-func TestMachineBufferReuse(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-	initCS := newTestCertState(t, ca, caKey, "init", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	respCS := newTestCertState(t, ca, caKey, "resp", []netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")})
-	v := testVerifier(caPool)
-
-	initM := newTestMachine(t, initCS, v, true, 1000)
-	respM := newTestMachine(t, respCS, v, false, 2000)
-
-	msg1, err := initM.Initiate(nil)
-	require.NoError(t, err)
-
-	t.Run("response writes into provided buffer", func(t *testing.T) {
-		buf := make([]byte, 0, 4096)
-		resp, result, err := respM.ProcessPacket(buf, msg1)
-		require.NoError(t, err)
-		require.NotNil(t, result)
-
-		assert.NotEmpty(t, resp, "response should have content")
-		assert.Equal(t, &buf[:1][0], &resp[:1][0],
-			"response should reuse the provided buffer's backing array")
-	})
-
-	t.Run("initiate writes into provided buffer", func(t *testing.T) {
-		initM2 := newTestMachine(t, initCS, v, true, 3000)
-		buf := make([]byte, 0, 4096)
-		msg, err := initM2.Initiate(buf)
-		require.NoError(t, err)
-
-		assert.NotEmpty(t, msg, "initiate should have content")
-		assert.Equal(t, &buf[:1][0], &msg[:1][0],
-			"initiate should reuse the provided buffer's backing array")
-	})
-
-	t.Run("nil out still works", func(t *testing.T) {
-		initM2 := newTestMachine(t, initCS, v, true, 4000)
-		respM2 := newTestMachine(t, respCS, v, false, 5000)
-
-		msg1, err := initM2.Initiate(nil)
-		require.NoError(t, err)
-
-		resp, _, err := respM2.ProcessPacket(nil, msg1)
-		require.NoError(t, err)
-
-		out, result, err := initM2.ProcessPacket(nil, resp)
-		require.NoError(t, err)
-		assert.NotNil(t, result)
-		assert.Nil(t, out, "initiator should have no response for IX msg2")
-	})
-}
-
-func TestMachineMsgIndexTracking(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-	initCS := newTestCertState(t, ca, caKey, "init", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	respCS := newTestCertState(t, ca, caKey, "resp", []netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")})
-	v := testVerifier(caPool)
-
-	initM := newTestMachine(t, initCS, v, true, 100)
-	respM := newTestMachine(t, respCS, v, false, 200)
-
-	msg1, err := initM.Initiate(nil)
-	require.NoError(t, err)
-
-	resp1, result1, err := respM.ProcessPacket(nil, msg1)
-	require.NoError(t, err)
-	assert.NotNil(t, result1)
-
-	_, result2, err := initM.ProcessPacket(nil, resp1)
-	require.NoError(t, err)
-	assert.NotNil(t, result2)
-}
-
-func TestMachineThreeMessagePattern(t *testing.T) {
-	registerTestXXInfo(t)
-
-	// Use HandshakeXX (3 messages) to verify the Machine handles multi-message
-	// patterns correctly. XX flow:
-	//   msg1 (I->R): [E]           - payload only, no cert
-	//   msg2 (R->I): [E, ee, S, es] - payload + cert
-	//   msg3 (I->R): [S, se]       - cert only (no payload, not first two)
-
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-	v := testVerifier(caPool)
-
-	initCS := newTestCertState(t, ca, caKey, "init", []netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")})
-	respCS := newTestCertState(t, ca, caKey, "resp", []netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")})
-
-	initM, err := NewMachine(
-		cert.Version2,
-		initCS.getCredential, v,
-		func() (uint32, error) { return 1000, nil },
-		true, header.HandshakeXXPSK0,
-	)
-	require.NoError(t, err)
-
-	respM, err := NewMachine(
-		cert.Version2,
-		respCS.getCredential, v,
-		func() (uint32, error) { return 2000, nil },
-		false, header.HandshakeXXPSK0,
-	)
-	require.NoError(t, err)
-
-	// msg1: initiator -> responder (E only, no cert)
-	msg1, err := initM.Initiate(nil)
-	require.NoError(t, err)
-	assert.NotEmpty(t, msg1)
-
-	// Responder processes msg1, should not complete yet, should produce msg2
-	msg2, result, err := respM.ProcessPacket(nil, msg1)
-	require.NoError(t, err)
-	assert.Nil(t, result, "XX should not complete on msg1")
-	assert.NotEmpty(t, msg2, "responder should produce msg2")
-
-	// Initiator processes msg2: gets responder's cert, produces msg3, and
-	// completes (WriteMessage for msg3 derives keys)
-	msg3, initResult, err := initM.ProcessPacket(nil, msg2)
-	require.NoError(t, err)
-	require.NotNil(t, initResult, "XX initiator should complete after reading msg2 and writing msg3")
-	assert.NotEmpty(t, msg3, "initiator should produce msg3")
-	assert.Equal(t, "resp", initResult.RemoteCert.Certificate.Name())
-
-	// Responder processes msg3: gets initiator's cert and completes
-	_, respResult, err := respM.ProcessPacket(nil, msg3)
-	require.NoError(t, err)
-	require.NotNil(t, respResult, "XX responder should complete on msg3")
-	assert.Equal(t, "init", respResult.RemoteCert.Certificate.Name())
-
-	assert.Equal(t, uint64(3), initResult.MessageIndex, "XX has 3 messages")
-	assert.Equal(t, uint64(3), respResult.MessageIndex, "XX has 3 messages")
-
-	// Verify keys work
-	ct1, err := initResult.EKey.Encrypt(nil, nil, []byte("three messages"))
-	require.NoError(t, err)
-	pt1, err := respResult.DKey.Decrypt(nil, nil, ct1)
-	require.NoError(t, err)
-	assert.Equal(t, []byte("three messages"), pt1)
-}
-
-// NOTE: ErrIncompleteHandshake is tested implicitly. It can't be triggered with
-// IX since the cert is always in the payload. A 3-message pattern test (HybridIX)
-// should exercise the case where cert arrives in msg3 and verify that completing
-// without it fails.
-
-func TestMachineExpiredCert(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519,
-		time.Now().Add(-24*time.Hour), time.Now().Add(24*time.Hour),
-		nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-
-	expCert, _, expKeyPEM, _ := ct.NewTestCert(
-		cert.Version2, cert.Curve_CURVE25519, ca, caKey,
-		"expired", time.Now().Add(-2*time.Hour), time.Now().Add(-1*time.Hour),
-		[]netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")}, nil, nil,
-	)
-	expKey, _, _, err := cert.UnmarshalPrivateKeyFromPEM(expKeyPEM)
-	require.NoError(t, err)
-	expHsBytes, err := expCert.MarshalForHandshakes()
-	require.NoError(t, err)
-	ncs := noise.NewCipherSuite(noise.DH25519, noise.CipherChaChaPoly, noise.HashSHA256)
-
-	expiredCS := &testCertState{
-		version: cert.Version2,
-		creds: map[cert.Version]*Credential{
-			cert.Version2: NewCredential(expCert, expHsBytes, expKey, ncs),
-		},
-	}
-
-	respCS := newTestCertState(
-		t, ca, caKey, "responder",
-		[]netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")},
-	)
-
-	_, respM, _, _, err := initiateHandshake(
-		t, expiredCS, testVerifier(caPool),
-		respCS, testVerifier(caPool),
-	)
-	require.ErrorContains(t, err, "verify cert")
-	assert.True(t, respM.Failed())
-}
-
-func TestMachineNoCertNetworks(t *testing.T) {
-	ca, _, caKey, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca)
-
-	caHsBytes, err := ca.MarshalForHandshakes()
-	require.NoError(t, err)
-	ncs := noise.NewCipherSuite(noise.DH25519, noise.CipherChaChaPoly, noise.HashSHA256)
-
-	noNetCS := &testCertState{
-		version: cert.Version2,
-		creds: map[cert.Version]*Credential{
-			cert.Version2: NewCredential(ca, caHsBytes, caKey, ncs),
-		},
-	}
-
-	respCS := newTestCertState(
-		t, ca, caKey, "responder",
-		[]netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")},
-	)
-
-	_, respM, _, _, err := initiateHandshake(
-		t, noNetCS, testVerifier(caPool),
-		respCS, testVerifier(caPool),
-	)
-	require.Error(t, err)
-	assert.True(t, respM.Failed())
-}
-
-func TestMachineDifferentCAs(t *testing.T) {
-	ca1, _, caKey1, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	ca2, _, caKey2, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-
-	initCS := newTestCertState(
-		t, ca1, caKey1, "init",
-		[]netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")},
-	)
-	respCS := newTestCertState(
-		t, ca2, caKey2, "resp",
-		[]netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")},
-	)
-
-	_, respM, _, _, err := initiateHandshake(
-		t, initCS, testVerifier(ct.NewTestCAPool(ca1)),
-		respCS, testVerifier(ct.NewTestCAPool(ca2)),
-	)
-	require.ErrorContains(t, err, "verify cert")
-	assert.True(t, respM.Failed())
-}
-
-func TestMachineVersionNegotiation(t *testing.T) {
-	ca1, _, caKey1, _ := ct.NewTestCaCert(
-		cert.Version1, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	ca2, _, caKey2, _ := ct.NewTestCaCert(
-		cert.Version2, cert.Curve_CURVE25519, time.Time{}, time.Time{}, nil, nil, nil,
-	)
-	caPool := ct.NewTestCAPool(ca1, ca2)
-
-	makeMultiVersionResp := func(t *testing.T) *testCertState {
-		t.Helper()
-		respCertV1, _, respKeyPEM, _ := ct.NewTestCert(
-			cert.Version1, cert.Curve_CURVE25519, ca1, caKey1, "resp",
-			ca1.NotBefore(), ca1.NotAfter(),
-			[]netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")}, nil, nil,
-		)
-		respKey, _, _, _ := cert.UnmarshalPrivateKeyFromPEM(respKeyPEM)
-		respCertV2, _ := ct.NewTestCertDifferentVersion(respCertV1, cert.Version2, ca2, caKey2)
-		respHsV1, _ := respCertV1.MarshalForHandshakes()
-		respHsV2, _ := respCertV2.MarshalForHandshakes()
-		ncs := noise.NewCipherSuite(noise.DH25519, noise.CipherChaChaPoly, noise.HashSHA256)
-		return &testCertState{
-			version: cert.Version1,
-			creds: map[cert.Version]*Credential{
-				cert.Version1: NewCredential(respCertV1, respHsV1, respKey, ncs),
-				cert.Version2: NewCredential(respCertV2, respHsV2, respKey, ncs),
-			},
-		}
-	}
-
-	t.Run("responder matches initiator version", func(t *testing.T) {
-		initCS := newTestCertState(
-			t, ca2, caKey2, "init",
-			[]netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")},
-		)
-		respCS := makeMultiVersionResp(t)
-		v := testVerifier(caPool)
-
-		initM, _, respResult, resp, err := initiateHandshake(
-			t, initCS, v,
-			respCS, v,
-		)
-		require.NoError(t, err)
-		require.NotNil(t, respResult)
-
-		assert.Equal(t, cert.Version2, respResult.MyCert.Version(),
-			"responder should negotiate to initiator's version")
-
-		_, initResult, err := initM.ProcessPacket(nil, resp)
-		require.NoError(t, err)
-		require.NotNil(t, initResult)
-		assert.Equal(t, cert.Version2, initResult.RemoteCert.Certificate.Version(),
-			"initiator should see V2 cert from responder")
-	})
-
-	t.Run("responder keeps version when no match available", func(t *testing.T) {
-		initCS := newTestCertState(
-			t, ca2, caKey2, "init",
-			[]netip.Prefix{netip.MustParsePrefix("10.0.0.1/24")},
-		)
-
-		respCert, _, respKeyPEM, _ := ct.NewTestCert(
-			cert.Version1, cert.Curve_CURVE25519, ca1, caKey1, "resp",
-			ca1.NotBefore(), ca1.NotAfter(),
-			[]netip.Prefix{netip.MustParsePrefix("10.0.0.2/24")}, nil, nil,
-		)
-		respKey, _, _, _ := cert.UnmarshalPrivateKeyFromPEM(respKeyPEM)
-		respHs, _ := respCert.MarshalForHandshakes()
-		ncs := noise.NewCipherSuite(noise.DH25519, noise.CipherChaChaPoly, noise.HashSHA256)
-		respCS := &testCertState{
-			version: cert.Version1,
-			creds: map[cert.Version]*Credential{
-				cert.Version1: NewCredential(respCert, respHs, respKey, ncs),
-			},
-		}
-
-		v := testVerifier(caPool)
-		_, _, respResult, _, err := initiateHandshake(
-			t, initCS, v,
-			respCS, v,
-		)
-		require.NoError(t, err)
-		require.NotNil(t, respResult)
-
-		assert.Equal(t, cert.Version1, respResult.MyCert.Version(),
-			"responder should keep V1 when V2 not available")
-	})
-}

handshake/patterns.go

@@ -1,54 +0,0 @@
-package handshake
-
-import (
-	"fmt"
-
-	"github.com/flynn/noise"
-	"github.com/slackhq/nebula/header"
-)
-
-// msgFlags tracks what application data a handshake message carries.
-type msgFlags struct {
-	expectsPayload bool // message carries indexes and time
-	expectsCert    bool // message carries the certificate
-}
-
-// subtypeInfo bundles the noise pattern with the per-message flags for a
-// given handshake subtype.
-type subtypeInfo struct {
-	pattern noise.HandshakePattern
-	msgs    []msgFlags
-}
-
-// subtypeInfos defines the noise pattern and message content layout for each
-// handshake subtype.
-var subtypeInfos = map[header.MessageSubType]subtypeInfo{
-	// IX: 2 messages, both carry payload and cert
-	header.HandshakeIXPSK0: {
-		pattern: noise.HandshakeIX,
-		msgs: []msgFlags{
-			{expectsPayload: true, expectsCert: true},
-			{expectsPayload: true, expectsCert: true},
-		},
-	},
-
-	// XX: 3 messages
-	//   msg1 (I->R): payload only
-	//   msg2 (R->I): payload + cert
-	//   msg3 (I->R): cert only
-	//header.HandshakeXXPSK0: {
-	//	pattern: noise.HandshakeXX,
-	//	msgs: []msgFlags{
-	//		{expectsPayload: true, expectsCert: false},
-	//		{expectsPayload: true, expectsCert: true},
-	//		{expectsPayload: false, expectsCert: true},
-	//	},
-	//},
-}
-
-func subtypeInfoFor(subtype header.MessageSubType) (subtypeInfo, error) {
-	if info, ok := subtypeInfos[subtype]; ok {
-		return info, nil
-	}
-	return subtypeInfo{}, fmt.Errorf("%w: %d", ErrUnknownSubtype, subtype)
-}

handshake/patterns_test.go

@@ -1,63 +0,0 @@
-package handshake
-
-import (
-	"testing"
-
-	"github.com/flynn/noise"
-	"github.com/slackhq/nebula/header"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestSubtypeInfo(t *testing.T) {
-	t.Run("IX", func(t *testing.T) {
-		info, err := subtypeInfoFor(header.HandshakeIXPSK0)
-		require.NoError(t, err)
-		assert.Equal(t, noise.HandshakeIX.Name, info.pattern.Name)
-		require.Len(t, info.msgs, 2)
-		// msg1: payload + cert
-		assert.True(t, info.msgs[0].expectsPayload)
-		assert.True(t, info.msgs[0].expectsCert)
-		// msg2: payload + cert
-		assert.True(t, info.msgs[1].expectsPayload)
-		assert.True(t, info.msgs[1].expectsCert)
-	})
-
-	t.Run("XX", func(t *testing.T) {
-		registerTestXXInfo(t)
-		info, err := subtypeInfoFor(header.HandshakeXXPSK0)
-		require.NoError(t, err)
-		assert.Equal(t, noise.HandshakeXX.Name, info.pattern.Name)
-		require.Len(t, info.msgs, 3)
-		// msg1: payload only
-		assert.True(t, info.msgs[0].expectsPayload)
-		assert.False(t, info.msgs[0].expectsCert)
-		// msg2: payload + cert
-		assert.True(t, info.msgs[1].expectsPayload)
-		assert.True(t, info.msgs[1].expectsCert)
-		// msg3: cert only
-		assert.False(t, info.msgs[2].expectsPayload)
-		assert.True(t, info.msgs[2].expectsCert)
-	})
-
-	t.Run("unknown subtype returns error", func(t *testing.T) {
-		_, err := subtypeInfoFor(99)
-		require.ErrorIs(t, err, ErrUnknownSubtype)
-	})
-}
-
-// registerTestXXInfo temporarily registers XX subtype info for testing.
-func registerTestXXInfo(t *testing.T) {
-	t.Helper()
-	subtypeInfos[header.HandshakeXXPSK0] = subtypeInfo{
-		pattern: noise.HandshakeXX,
-		msgs: []msgFlags{
-			{expectsPayload: true, expectsCert: false},
-			{expectsPayload: true, expectsCert: true},
-			{expectsPayload: false, expectsCert: true},
-		},
-	}
-	t.Cleanup(func() {
-		delete(subtypeInfos, header.HandshakeXXPSK0)
-	})
-}