v1.9.6 (#1434)

Update CHANGELOG for Nebula v1.9.6

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -0,0 +1,69 @@
+name: "\U0001F41B Bug Report"
+description: Report an issue or possible bug
+title: "\U0001F41B BUG:"
+labels: []
+assignees: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ### Thank you for taking the time to file a bug report!
+
+        Please fill out this form as completely as possible.
+
+  - type: input
+    id: version
+    attributes:
+      label: What version of `nebula` are you using? (`nebula -version`)
+      placeholder: 0.0.0
+    validations:
+      required: true
+
+  - type: input
+    id: os
+    attributes:
+      label: What operating system are you using?
+      description: iOS and Android specific issues belong in the [mobile_nebula](https://github.com/DefinedNet/mobile_nebula) repo.
+      placeholder: Linux, Mac, Windows
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the Bug
+      description: A clear and concise description of what the bug is.
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs from affected hosts
+      description: |
+        Please provide logs from ALL affected hosts during the time of the issue. If you do not provide logs we will be unable to assist you!
+
+        [Learn how to find Nebula logs here.](https://nebula.defined.net/docs/guides/viewing-nebula-logs/)
+
+        Improve formatting by using <code>```</code> at the beginning and end of each log block.
+      value: |
+        ```
+
+        ```
+    validations:
+      required: true
+
+  - type: textarea
+    id: configs
+    attributes:
+      label: Config files from affected hosts
+      description: |
+        Provide config files for all affected hosts.
+
+        Improve formatting by using <code>```</code> at the beginning and end of each config file.
+      value: |
+        ```
+
+        ```
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,13 @@
+blank_issues_enabled: true
+contact_links:
+  - name: 📘 Documentation
+    url: https://nebula.defined.net/docs/
+    about: Review documentation.
+
+  - name: 💁 Support/Chat
+    url: https://join.slack.com/t/nebulaoss/shared_invite/enQtOTA5MDI4NDg3MTg4LTkwY2EwNTI4NzQyMzc0M2ZlODBjNWI3NTY1MzhiOThiMmZlZjVkMTI0NGY4YTMyNjUwMWEyNzNkZTJmYzQxOGU
+    about: 'This issue tracker is not for support questions. Join us on Slack for assistance!'
+
+  - name: 📱 Mobile Nebula
+    url: https://github.com/definednet/mobile_nebula
+    about: 'This issue tracker is not for mobile support. Try the Mobile Nebula repo instead!'

.github/dependabot.yml

@@ -0,0 +1,22 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    groups:
+      golang-x-dependencies:
+        patterns:
+          - "golang.org/x/*"
+      zx2c4-dependencies:
+        patterns:
+          - "golang.zx2c4.com/*"
+      protobuf-dependencies:
+        patterns:
+          - "github.com/golang/protobuf"
+          - "google.golang.org/protobuf"

.github/workflows/gofmt.yml

@@ -14,31 +14,21 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.18
-      uses: actions/setup-go@v2
-      with:
-        go-version: 1.18
-      id: go
+    - uses: actions/checkout@v4
 
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
-
-    - uses: actions/cache@v2
+    - uses: actions/setup-go@v5
       with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-gofmt1.18-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-gofmt1.18-
+        go-version: '1.22'
+        check-latest: true
 
     - name: Install goimports
       run: |
-        go get golang.org/x/tools/cmd/goimports
-        go build golang.org/x/tools/cmd/goimports
+        go install golang.org/x/tools/cmd/goimports@latest
 
     - name: gofmt
       run: |
-        if [ "$(find . -iname '*.go' | grep -v '\.pb\.go$' | xargs ./goimports -l)" ]
+        if [ "$(find . -iname '*.go' | grep -v '\.pb\.go$' | xargs goimports -l)" ]
         then
-          find . -iname '*.go' | grep -v '\.pb\.go$' | xargs ./goimports -d
+          find . -iname '*.go' | grep -v '\.pb\.go$' | xargs goimports -d
           exit 1
         fi

.github/workflows/release.yml

@@ -7,25 +7,24 @@ name: Create release and upload binaries
 
 jobs:
   build-linux:
-    name: Build Linux All
+    name: Build Linux/BSD All
     runs-on: ubuntu-latest
     steps:
-      - name: Set up Go 1.18
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.18
+      - uses: actions/checkout@v4
 
-      - name: Checkout code
-        uses: actions/checkout@v2
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+          check-latest: true
 
       - name: Build
         run: |
-          make BUILD_NUMBER="${GITHUB_REF#refs/tags/v}" release-linux release-freebsd
+          make BUILD_NUMBER="${GITHUB_REF#refs/tags/v}" release-linux release-freebsd release-openbsd release-netbsd
           mkdir release
           mv build/*.tar.gz release
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: linux-latest
           path: release
@@ -34,13 +33,12 @@ jobs:
     name: Build Windows
     runs-on: windows-latest
     steps:
-      - name: Set up Go 1.18
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.18
+      - uses: actions/checkout@v4
 
-      - name: Checkout code
-        uses: actions/checkout@v2
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+          check-latest: true
 
       - name: Build
         run: |
@@ -57,7 +55,7 @@ jobs:
           mv dist\windows\wintun build\dist\windows\
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: windows-latest
           path: build
@@ -66,19 +64,18 @@ jobs:
     name: Build Universal Darwin
     env:
       HAS_SIGNING_CREDS: ${{ secrets.AC_USERNAME != '' }}
-    runs-on: macos-11
+    runs-on: macos-latest
     steps:
-      - name: Set up Go 1.18
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.18
+      - uses: actions/checkout@v4
 
-      - name: Checkout code
-        uses: actions/checkout@v2
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+          check-latest: true
 
       - name: Import certificates
         if: env.HAS_SIGNING_CREDS == 'true'
-        uses: Apple-Actions/import-codesign-certs@v1
+        uses: Apple-Actions/import-codesign-certs@v3
         with:
           p12-file-base64: ${{ secrets.APPLE_DEVELOPER_CERTIFICATE_P12_BASE64 }}
           p12-password: ${{ secrets.APPLE_DEVELOPER_CERTIFICATE_PASSWORD }}
@@ -107,22 +104,72 @@ jobs:
           fi
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: darwin-latest
           path: ./release/*
 
+  build-docker:
+    name: Create and Upload Docker Images
+    # Technically we only need build-linux to succeed, but if any platforms fail we'll
+    # want to investigate and restart the build
+    needs: [build-linux, build-darwin, build-windows]
+    runs-on: ubuntu-latest
+    env:
+      HAS_DOCKER_CREDS: ${{ vars.DOCKERHUB_USERNAME != '' && secrets.DOCKERHUB_TOKEN != '' }}
+    # XXX It's not possible to write a conditional here, so instead we do it on every step
+    #if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
+    steps:
+      # Be sure to checkout the code before downloading artifacts, or they will
+      # be overwritten
+      - name: Checkout code
+        if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
+        uses: actions/checkout@v4
+
+      - name: Download artifacts
+        if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
+        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@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@v3
+
+      - name: Build and push images
+        if: ${{ env.HAS_DOCKER_CREDS == 'true' }}
+        env:
+          DOCKER_IMAGE_REPO: ${{ vars.DOCKER_IMAGE_REPO || 'nebulaoss/nebula' }}
+          DOCKER_IMAGE_TAG: ${{ vars.DOCKER_IMAGE_TAG || 'latest' }}
+        run: |
+          mkdir -p build/linux-{amd64,arm64}
+          tar -zxvf artifacts/nebula-linux-amd64.tar.gz -C build/linux-amd64/
+          tar -zxvf artifacts/nebula-linux-arm64.tar.gz -C build/linux-arm64/
+          docker buildx build . --push -f docker/Dockerfile --platform linux/amd64,linux/arm64 --tag "${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@v4
+
       - name: Download artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
 
       - name: Zip Windows
         run: |
-          cd windows-latest
+          cd artifacts/windows-latest
           cp windows-amd64/* .
           zip -r nebula-windows-amd64.zip nebula.exe nebula-cert.exe dist
           cp windows-arm64/* .
@@ -130,6 +177,7 @@ jobs:
 
       - name: Create sha256sum
         run: |
+          cd artifacts
           for dir in linux-latest darwin-latest windows-latest
           do
             (
@@ -159,195 +207,12 @@ jobs:
 
       - name: Create Release
         id: create_release
-        uses: actions/create-release@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: ${{ github.ref }}
-          release_name: Release ${{ github.ref }}
-          draft: false
-          prerelease: false
-
-      ##
-      ## Upload assets (I wish we could just upload the whole folder at once...
-      ##
-
-      - name: Upload SHASUM256.txt
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./SHASUM256.txt
-          asset_name: SHASUM256.txt
-          asset_content_type: text/plain
-
-      - name: Upload darwin zip
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./darwin-latest/nebula-darwin.zip
-          asset_name: nebula-darwin.zip
-          asset_content_type: application/zip
-
-      - name: Upload windows-amd64
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./windows-latest/nebula-windows-amd64.zip
-          asset_name: nebula-windows-amd64.zip
-          asset_content_type: application/zip
-
-      - name: Upload windows-arm64
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./windows-latest/nebula-windows-arm64.zip
-          asset_name: nebula-windows-arm64.zip
-          asset_content_type: application/zip
-
-      - name: Upload linux-amd64
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-amd64.tar.gz
-          asset_name: nebula-linux-amd64.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-386
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-386.tar.gz
-          asset_name: nebula-linux-386.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-ppc64le
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-ppc64le.tar.gz
-          asset_name: nebula-linux-ppc64le.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-arm-5
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-arm-5.tar.gz
-          asset_name: nebula-linux-arm-5.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-arm-6
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-arm-6.tar.gz
-          asset_name: nebula-linux-arm-6.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-arm-7
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-arm-7.tar.gz
-          asset_name: nebula-linux-arm-7.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-arm64
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-arm64.tar.gz
-          asset_name: nebula-linux-arm64.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-mips
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-mips.tar.gz
-          asset_name: nebula-linux-mips.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-mipsle
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-mipsle.tar.gz
-          asset_name: nebula-linux-mipsle.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-mips64
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-mips64.tar.gz
-          asset_name: nebula-linux-mips64.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-mips64le
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-mips64le.tar.gz
-          asset_name: nebula-linux-mips64le.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-mips-softfloat
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-mips-softfloat.tar.gz
-          asset_name: nebula-linux-mips-softfloat.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload linux-riscv64
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-linux-riscv64.tar.gz
-          asset_name: nebula-linux-riscv64.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload freebsd-amd64
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./linux-latest/nebula-freebsd-amd64.tar.gz
-          asset_name: nebula-freebsd-amd64.tar.gz
-          asset_content_type: application/gzip
+        run: |
+          cd artifacts
+          gh release create \
+            --verify-tag \
+            --title "Release ${{ github.ref_name }}" \
+            "${{ github.ref_name }}" \
+            SHASUM256.txt *-latest/*.zip *-latest/*.tar.gz

.github/workflows/smoke-extra.yml

@@ -0,0 +1,48 @@
+name: smoke-extra
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    types: [opened, synchronize, labeled, reopened]
+    paths:
+      - '.github/workflows/smoke**'
+      - '**Makefile'
+      - '**.go'
+      - '**.proto'
+      - 'go.mod'
+      - 'go.sum'
+jobs:
+
+  smoke-extra:
+    if: github.ref == 'refs/heads/master' || contains(github.event.pull_request.labels.*.name, 'smoke-test-extra')
+    name: Run extra smoke tests
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-go@v5
+      with:
+        go-version-file: 'go.mod'
+        check-latest: true
+
+    - name: install vagrant
+      run: sudo apt-get update && sudo apt-get install -y vagrant virtualbox
+
+    - name: freebsd-amd64
+      run: make smoke-vagrant/freebsd-amd64
+
+    - name: openbsd-amd64
+      run: make smoke-vagrant/openbsd-amd64
+
+    - 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

.github/workflows/smoke.yml

@@ -18,24 +18,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.18
-      uses: actions/setup-go@v2
-      with:
-        go-version: 1.18
-      id: go
+    - uses: actions/checkout@v4
 
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
-
-    - uses: actions/cache@v2
+    - uses: actions/setup-go@v5
       with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go1.18-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-go1.18-
+        go-version: '1.22'
+        check-latest: true
 
     - name: build
-      run: make bin-docker
+      run: make bin-docker CGO_ENABLED=1 BUILD_ARGS=-race
 
     - name: setup docker image
       working-directory: ./.github/workflows/smoke
@@ -53,4 +44,12 @@ jobs:
       working-directory: ./.github/workflows/smoke
       run: ./smoke-relay.sh
 
+    - name: setup docker image for P256
+      working-directory: ./.github/workflows/smoke
+      run: NAME="smoke-p256" CURVE=P256 ./build.sh
+
+    - name: run smoke-p256
+      working-directory: ./.github/workflows/smoke
+      run: NAME="smoke-p256" ./smoke.sh
+
     timeout-minutes: 10

.github/workflows/smoke/Dockerfile

@@ -1,4 +1,6 @@
-FROM debian:buster
+FROM ubuntu:jammy
+
+RUN apt-get update && apt-get install -y iputils-ping ncat tcpdump
 
 ADD ./build /nebula
 

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

@@ -41,4 +41,4 @@ EOF
     ../../../../nebula-cert sign -name "host4" -groups "host,host4" -ip "192.168.100.4/24"
 )
 
-sudo docker build -t nebula:smoke-relay .
+docker build -t nebula:smoke-relay .

.github/workflows/smoke/build.sh

@@ -11,6 +11,11 @@ mkdir ./build
     cp ../../../../build/linux-amd64/nebula .
     cp ../../../../build/linux-amd64/nebula-cert .
 
+    if [ "$1" ]
+    then
+        cp "../../../../build/$1/nebula" "$1-nebula"
+    fi
+
     HOST="lighthouse1" \
         AM_LIGHTHOUSE=true \
         ../genconfig.sh >lighthouse1.yml
@@ -29,11 +34,11 @@ mkdir ./build
         OUTBOUND='[{"port": "any", "proto": "icmp", "group": "lighthouse"}]' \
         ../genconfig.sh >host4.yml
 
-    ../../../../nebula-cert ca -name "Smoke Test"
+    ../../../../nebula-cert ca -curve "${CURVE:-25519}" -name "Smoke Test"
     ../../../../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"
 )
 
-sudo docker build -t nebula:smoke .
+docker build -t "nebula:${NAME:-smoke}" .

.github/workflows/smoke/genconfig.sh

@@ -47,9 +47,11 @@ listen:
   port: ${LISTEN_PORT:-4242}
 
 tun:
-  dev: ${TUN_DEV:-nebula1}
+  dev: ${TUN_DEV:-tun0}
 
 firewall:
+  inbound_action: reject
+  outbound_action: reject
   outbound: ${OUTBOUND:-$FIREWALL_ALL}
   inbound: ${INBOUND:-$FIREWALL_ALL}
 

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

@@ -14,24 +14,24 @@ cleanup() {
     set +e
     if [ "$(jobs -r)" ]
     then
-        sudo docker kill lighthouse1 host2 host3 host4
+        docker kill lighthouse1 host2 host3 host4
     fi
 }
 
 trap cleanup EXIT
 
-sudo docker run --name lighthouse1 --rm nebula:smoke-relay -config lighthouse1.yml -test
-sudo docker run --name host2 --rm nebula:smoke-relay -config host2.yml -test
-sudo docker run --name host3 --rm nebula:smoke-relay -config host3.yml -test
-sudo docker run --name host4 --rm nebula:smoke-relay -config host4.yml -test
+docker run --name lighthouse1 --rm nebula:smoke-relay -config lighthouse1.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
 
-sudo 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]  /' &
+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
-sudo 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]  /' &
+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
-sudo 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]  /' &
+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
-sudo 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]  /' &
+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
@@ -39,44 +39,44 @@ echo
 echo " *** Testing ping from lighthouse1"
 echo
 set -x
-sudo docker exec lighthouse1 ping -c1 192.168.100.2
-sudo docker exec lighthouse1 ping -c1 192.168.100.3
-sudo docker exec lighthouse1 ping -c1 192.168.100.4
+docker exec lighthouse1 ping -c1 192.168.100.2
+docker exec lighthouse1 ping -c1 192.168.100.3
+docker exec lighthouse1 ping -c1 192.168.100.4
 
 set +x
 echo
 echo " *** Testing ping from host2"
 echo
 set -x
-sudo docker exec host2 ping -c1 192.168.100.1
+docker exec host2 ping -c1 192.168.100.1
 # Should fail because no relay configured in this direction
-! sudo docker exec host2 ping -c1 192.168.100.3 -w5 || exit 1
-! sudo docker exec host2 ping -c1 192.168.100.4 -w5 || exit 1
+! docker exec host2 ping -c1 192.168.100.3 -w5 || exit 1
+! docker exec host2 ping -c1 192.168.100.4 -w5 || exit 1
 
 set +x
 echo
 echo " *** Testing ping from host3"
 echo
 set -x
-sudo docker exec host3 ping -c1 192.168.100.1
-sudo docker exec host3 ping -c1 192.168.100.2
-sudo docker exec host3 ping -c1 192.168.100.4
+docker exec host3 ping -c1 192.168.100.1
+docker exec host3 ping -c1 192.168.100.2
+docker exec host3 ping -c1 192.168.100.4
 
 set +x
 echo
 echo " *** Testing ping from host4"
 echo
 set -x
-sudo docker exec host4 ping -c1 192.168.100.1
+docker exec host4 ping -c1 192.168.100.1
 # Should fail because relays not allowed
-! sudo docker exec host4 ping -c1 192.168.100.2 -w5 || exit 1
-sudo docker exec host4 ping -c1 192.168.100.3
+! docker exec host4 ping -c1 192.168.100.2 -w5 || exit 1
+docker exec host4 ping -c1 192.168.100.3
 
-sudo docker exec host4 sh -c 'kill 1'
-sudo docker exec host3 sh -c 'kill 1'
-sudo docker exec host2 sh -c 'kill 1'
-sudo docker exec lighthouse1 sh -c 'kill 1'
-sleep 1
+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'
+sleep 5
 
 if [ "$(jobs -r)" ]
 then

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

@@ -0,0 +1,105 @@
+#!/bin/bash
+
+set -e -x
+
+set -o pipefail
+
+export VAGRANT_CWD="$PWD/vagrant-$1"
+
+mkdir -p logs
+
+cleanup() {
+    echo
+    echo " *** cleanup"
+    echo
+
+    set +e
+    if [ "$(jobs -r)" ]
+    then
+        docker kill lighthouse1 host2
+    fi
+    vagrant destroy -f
+}
+
+trap cleanup EXIT
+
+CONTAINER="nebula:${NAME:-smoke}"
+
+docker run --name lighthouse1 --rm "$CONTAINER" -config lighthouse1.yml -test
+docker run --name host2 --rm "$CONTAINER" -config host2.yml -test
+
+vagrant up
+vagrant ssh -c "cd /nebula && /nebula/$1-nebula -config host3.yml -test"
+
+docker run --name lighthouse1 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
+sleep 1
+docker run --name host2 --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'" &
+sleep 15
+
+# grab tcpdump pcaps for debugging
+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 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 &
+# vagrant ssh -c "tcpdump -i nebula1 -q -w - -U" 2>logs/host3.inside.log >logs/host3.inside.pcap &
+# vagrant ssh -c "tcpdump -i eth0 -q -w - -U" 2>logs/host3.outside.log >logs/host3.outside.pcap &
+
+docker exec host2 ncat -nklv 0.0.0.0 2000 &
+vagrant ssh -c "ncat -nklv 0.0.0.0 2000" &
+#docker exec host2 ncat -e '/usr/bin/echo host2' -nkluv 0.0.0.0 3000 &
+#vagrant ssh -c "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 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 192.168.100.1
+# Should fail because not allowed by host3 inbound firewall
+! docker exec host2 ping -c1 192.168.100.3 -w5 || exit 1
+
+set +x
+echo
+echo " *** Testing ncat from host2"
+echo
+set -x
+# Should fail because not allowed by host3 inbound firewall
+#! 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
+vagrant ssh -c "ping -c1 192.168.100.1"
+vagrant ssh -c "ping -c1 192.168.100.2"
+
+set +x
+echo
+echo " *** Testing ncat from host3"
+echo
+set -x
+#vagrant ssh -c "ncat -nzv -w5 192.168.100.2 2000"
+#vagrant ssh -c "ncat -nzuv -w5 192.168.100.2 3000" | grep -q host2
+
+vagrant ssh -c "sudo xargs kill </nebula/pid"
+docker exec host2 sh -c 'kill 1'
+docker exec lighthouse1 sh -c 'kill 1'
+sleep 1
+
+if [ "$(jobs -r)" ]
+then
+    echo "nebula still running after SIGTERM sent" >&2
+    exit 1
+fi

.github/workflows/smoke/smoke.sh

@@ -14,60 +14,105 @@ cleanup() {
     set +e
     if [ "$(jobs -r)" ]
     then
-        sudo docker kill lighthouse1 host2 host3 host4
+        docker kill lighthouse1 host2 host3 host4
     fi
 }
 
 trap cleanup EXIT
 
-sudo docker run --name lighthouse1 --rm nebula:smoke -config lighthouse1.yml -test
-sudo docker run --name host2 --rm nebula:smoke -config host2.yml -test
-sudo docker run --name host3 --rm nebula:smoke -config host3.yml -test
-sudo docker run --name host4 --rm nebula:smoke -config host4.yml -test
+CONTAINER="nebula:${NAME:-smoke}"
 
-sudo docker run --name lighthouse1 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
+docker run --name lighthouse1 --rm "$CONTAINER" -config lighthouse1.yml -test
+docker run --name host2 --rm "$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 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config lighthouse1.yml 2>&1 | tee logs/lighthouse1 | sed -u 's/^/  [lighthouse1]  /' &
 sleep 1
-sudo docker run --name host2 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke -config host2.yml 2>&1 | tee logs/host2 | sed -u 's/^/  [host2]  /' &
+docker run --name host2 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$CONTAINER" -config host2.yml 2>&1 | tee logs/host2 | sed -u 's/^/  [host2]  /' &
 sleep 1
-sudo docker run --name host3 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke -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 "$CONTAINER" -config host3.yml 2>&1 | tee logs/host3 | sed -u 's/^/  [host3]  /' &
 sleep 1
-sudo docker run --name host4 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm nebula:smoke -config host4.yml 2>&1 | tee logs/host4 | sed -u 's/^/  [host4]  /' &
+docker run --name host4 --device /dev/net/tun:/dev/net/tun --cap-add NET_ADMIN --rm "$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 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 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 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 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 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
-sudo docker exec lighthouse1 ping -c1 192.168.100.2
-sudo docker exec lighthouse1 ping -c1 192.168.100.3
+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
-sudo docker exec host2 ping -c1 192.168.100.1
+docker exec host2 ping -c1 192.168.100.1
 # Should fail because not allowed by host3 inbound firewall
-! sudo docker exec host2 ping -c1 192.168.100.3 -w5 || exit 1
+! docker exec host2 ping -c1 192.168.100.3 -w5 || exit 1
+
+set +x
+echo
+echo " *** Testing ncat from host2"
+echo
+set -x
+# Should fail because not allowed by host3 inbound firewall
+! 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
-sudo docker exec host3 ping -c1 192.168.100.1
-sudo docker exec host3 ping -c1 192.168.100.2
+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 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
-sudo docker exec host4 ping -c1 192.168.100.1
+docker exec host4 ping -c1 192.168.100.1
 # Should fail because not allowed by host4 outbound firewall
-! sudo docker exec host4 ping -c1 192.168.100.2 -w5 || exit 1
-! sudo docker exec host4 ping -c1 192.168.100.3 -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
+echo " *** Testing ncat from host4"
+echo
+set -x
+# Should fail because not allowed by host4 outbound firewall
+! 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
@@ -75,16 +120,16 @@ echo " *** Testing conntrack"
 echo
 set -x
 # host2 can ping host3 now that host3 pinged it first
-sudo docker exec host2 ping -c1 192.168.100.3
+docker exec host2 ping -c1 192.168.100.3
 # host4 can ping host2 once conntrack established
-sudo docker exec host2 ping -c1 192.168.100.4
-sudo docker exec host4 ping -c1 192.168.100.2
+docker exec host2 ping -c1 192.168.100.4
+docker exec host4 ping -c1 192.168.100.2
 
-sudo docker exec host4 sh -c 'kill 1'
-sudo docker exec host3 sh -c 'kill 1'
-sudo docker exec host2 sh -c 'kill 1'
-sudo docker exec lighthouse1 sh -c 'kill 1'
-sleep 1
+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'
+sleep 5
 
 if [ "$(jobs -r)" ]
 then

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

@@ -0,0 +1,7 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+Vagrant.configure("2") do |config|
+  config.vm.box = "generic/freebsd14"
+
+  config.vm.synced_folder "../build", "/nebula", type: "rsync"
+end

.github/workflows/smoke/vagrant-linux-386/Vagrantfile

@@ -0,0 +1,7 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+Vagrant.configure("2") do |config|
+  config.vm.box = "ubuntu/xenial32"
+
+  config.vm.synced_folder "../build", "/nebula"
+end

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

@@ -0,0 +1,16 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+Vagrant.configure("2") do |config|
+  config.vm.box = "ubuntu/jammy64"
+
+  config.vm.synced_folder "../build", "/nebula"
+
+  config.vm.provision :shell do |shell|
+    shell.inline = <<-EOF
+      sed -i 's/GRUB_CMDLINE_LINUX=""/GRUB_CMDLINE_LINUX="ipv6.disable=1"/' /etc/default/grub
+      update-grub
+    EOF
+    shell.privileged = true
+    shell.reboot = true
+  end
+end

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

@@ -0,0 +1,7 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+Vagrant.configure("2") do |config|
+  config.vm.box = "generic/netbsd9"
+
+  config.vm.synced_folder "../build", "/nebula", type: "rsync"
+end

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

@@ -0,0 +1,7 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+Vagrant.configure("2") do |config|
+  config.vm.box = "generic/openbsd7"
+
+  config.vm.synced_folder "../build", "/nebula", type: "rsync"
+end

.github/workflows/test.yml

@@ -18,60 +18,69 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.18
-      uses: actions/setup-go@v2
-      with:
-        go-version: 1.18
-      id: go
+    - uses: actions/checkout@v4
 
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
-
-    - uses: actions/cache@v2
+    - uses: actions/setup-go@v5
       with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go1.18-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-go1.18-
+        go-version: '1.22'
+        check-latest: true
 
     - name: Build
       run: make all
 
+    - name: Vet
+      run: make vet
+
     - name: Test
       run: make test
 
     - name: End 2 end
       run: make e2evv
 
-    - uses: actions/upload-artifact@v3
+    - name: Build test mobile
+      run: make build-test-mobile
+
+    - uses: actions/upload-artifact@v4
       with:
-        name: e2e packet flow
-        path: e2e/mermaid/
+        name: e2e packet flow linux-latest
+        path: e2e/mermaid/linux-latest
         if-no-files-found: warn
 
+  test-linux-boringcrypto:
+    name: Build and test on linux with boringcrypto
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-go@v5
+      with:
+        go-version: '1.22'
+        check-latest: true
+
+    - name: Build
+      run: make bin-boringcrypto
+
+    - name: Test
+      run: make test-boringcrypto
+
+    - name: End 2 end
+      run: make e2evv GOEXPERIMENT=boringcrypto CGO_ENABLED=1
+
   test:
     name: Build and test on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-latest, macos-11]
+        os: [windows-latest, macos-latest]
     steps:
 
-    - name: Set up Go 1.18
-      uses: actions/setup-go@v2
-      with:
-        go-version: 1.18
-      id: go
+    - uses: actions/checkout@v4
 
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
-
-    - uses: actions/cache@v2
+    - uses: actions/setup-go@v5
       with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go1.18-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-go1.18-
+        go-version: '1.22'
+        check-latest: true
 
     - name: Build nebula
       run: go build ./cmd/nebula
@@ -79,14 +88,17 @@ jobs:
     - name: Build nebula-cert
       run: go build ./cmd/nebula-cert
 
+    - name: Vet
+      run: make vet
+
     - name: Test
-      run: go test -v ./...
+      run: make test
 
     - name: End 2 end
       run: make e2evv
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
-        name: e2e packet flow
-        path: e2e/mermaid/
+        name: e2e packet flow ${{ matrix.os }}
+        path: e2e/mermaid/${{ matrix.os }}
         if-no-files-found: warn

.gitignore

@@ -4,10 +4,14 @@
 /nebula-arm6
 /nebula-darwin
 /nebula.exe
-/cert/*.crt
-/cert/*.key
+/nebula-cert.exe
 /coverage.out
 /cpu.pprof
 /build
 /*.tar.gz
 /e2e/mermaid/
+**.crt
+**.key
+**.pem
+!/examples/quickstart-vagrant/ansible/roles/nebula/files/vagrant-test-ca.key
+!/examples/quickstart-vagrant/ansible/roles/nebula/files/vagrant-test-ca.crt

CHANGELOG.md

@@ -7,6 +7,308 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [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)
+
+## [1.9.4] - 2024-09-09
+
+### Added
+
+- Support UDP dialing with gVisor. (#1181)
+
+### Changed
+
+- Make some Nebula state programmatically available via control object. (#1188)
+- Switch internal representation of IPs to netip, to prepare for IPv6 support
+  in the overlay. (#1173)
+- Minor build and cleanup changes. (#1171, #1164, #1162)
+- Various dependency updates. (#1195, #1190, #1174, #1168, #1167, #1161, #1147, #1146)
+
+### Fixed
+
+- Fix a bug on big endian hosts, like mips. (#1194)
+- Fix a rare panic if a local index collision happens. (#1191)
+- Fix integer wraparound in the calculation of handshake timeouts on 32-bit targets. (#1185)
+
+## [1.9.3] - 2024-06-06
+
+### Fixed
+
+- Initialize messageCounter to 2 instead of verifying later. (#1156)
+
+## [1.9.2] - 2024-06-03
+
+### Fixed
+
+- Ensure messageCounter is set before handshake is complete. (#1154)
+
+## [1.9.1] - 2024-05-29
+
+### Fixed
+
+- Fixed a potential deadlock in GetOrHandshake. (#1151)
+
+## [1.9.0] - 2024-05-07
+
+### Deprecated
+
+- This release adds a new setting `default_local_cidr_any` that defaults to
+  true to match previous behavior, but will default to false in the next
+  release (1.10). When set to false, `local_cidr` is matched correctly for
+  firewall rules on hosts acting as unsafe routers, and should be set for any
+  firewall rules you want to allow unsafe route hosts to access. See the issue
+  and example config for more details. (#1071, #1099)
+
+### Added
+
+- Nebula now has an official Docker image `nebulaoss/nebula` that is
+  distroless and contains just the `nebula` and `nebula-cert` binaries. You
+  can find it here: https://hub.docker.com/r/nebulaoss/nebula (#1037)
+
+- Experimental binaries for `loong64` are now provided. (#1003)
+
+- Added example service script for OpenRC. (#711)
+
+- The SSH daemon now supports inlined host keys. (#1054)
+
+- The SSH daemon now supports certificates with `sshd.trusted_cas`. (#1098)
+
+### Changed
+
+- Config setting `tun.unsafe_routes` is now reloadable. (#1083)
+
+- Small documentation and internal improvements. (#1065, #1067, #1069, #1108,
+  #1109, #1111, #1135)
+
+- Various dependency updates. (#1139, #1138, #1134, #1133, #1126, #1123, #1110,
+  #1094, #1092, #1087, #1086, #1085, #1072, #1063, #1059, #1055, #1053, #1047,
+  #1046, #1034, #1022)
+
+### Removed
+
+- Support for the deprecated `local_range` option has been removed. Please
+  change to `preferred_ranges` (which is also now reloadable). (#1043)
+
+- We are now building with go1.22, which means that for Windows you need at
+  least Windows 10 or Windows Server 2016. This is because support for earlier
+  versions was removed in Go 1.21. See https://go.dev/doc/go1.21#windows (#981)
+
+- Removed vagrant example, as it was unmaintained. (#1129)
+
+- Removed Fedora and Arch nebula.service files, as they are maintained in the
+  upstream repos. (#1128, #1132)
+
+- Remove the TCP round trip tracking metrics, as they never had correct data
+  and were an experiment to begin with. (#1114)
+
+### Fixed
+
+- Fixed a potential deadlock introduced in 1.8.1. (#1112)
+
+- Fixed support for Linux when IPv6 has been disabled at the OS level. (#787)
+
+- DNS will return NXDOMAIN now when there are no results. (#845)
+
+- Allow `::` in `lighthouse.dns.host`. (#1115)
+
+- Capitalization of `NotAfter` fixed in DNS TXT response. (#1127)
+
+- Don't log invalid certificates. It is untrusted data and can cause a large
+  volume of logs. (#1116)
+
+## [1.8.2] - 2024-01-08
+
+### Fixed
+
+- Fix multiple routines when listen.port is zero. This was a regression
+  introduced in v1.6.0. (#1057)
+
+### Changed
+
+- Small dependency update for Noise. (#1038)
+
+## [1.8.1] - 2023-12-19
+
+### Security
+
+- Update `golang.org/x/crypto`, which includes a fix for CVE-2023-48795. (#1048)
+
+### Fixed
+
+- Fix a deadlock introduced in v1.8.0 that could occur during handshakes. (#1044)
+
+- Fix mobile builds. (#1035)
+
+## [1.8.0] - 2023-12-06
+
+### Deprecated
+
+- The next minor release of Nebula, 1.9.0, will require at least Windows 10 or
+  Windows Server 2016. This is because support for earlier versions was removed
+  in Go 1.21. See https://go.dev/doc/go1.21#windows
+
+### Added
+
+- Linux: Notify systemd of service readiness. This should resolve timing issues
+  with services that depend on Nebula being active. For an example of how to
+  enable this, see: `examples/service_scripts/nebula.service`. (#929)
+
+- Windows: Use Registered IO (RIO) when possible. Testing on a Windows 11
+  machine shows ~50x improvement in throughput. (#905)
+
+- NetBSD, OpenBSD: Added rudimentary support. (#916, #812)
+
+- FreeBSD: Add support for naming tun devices. (#903)
+
+### Changed
+
+- `pki.disconnect_invalid` will now default to true. This means that once a
+  certificate expires, the tunnel will be disconnected. If you use SIGHUP to
+  reload certificates without restarting Nebula, you should ensure all of your
+  clients are on 1.7.0 or newer before you enable this feature. (#859)
+
+- Limit how often a busy tunnel can requery the lighthouse. The new config
+  option `timers.requery_wait_duration` defaults to `60s`. (#940)
+
+- The internal structures for hostmaps were refactored to reduce memory usage
+  and the potential for subtle bugs. (#843, #938, #953, #954, #955)
+
+- Lots of dependency updates.
+
+### Fixed
+
+- Windows: Retry wintun device creation if it fails the first time. (#985)
+
+- Fix issues with firewall reject packets that could cause panics. (#957)
+
+- Fix relay migration during re-handshakes. (#964)
+
+- Various other refactors and fixes. (#935, #952, #972, #961, #996, #1002,
+  #987, #1004, #1030, #1032, ...)
+
+## [1.7.2] - 2023-06-01
+
+### Fixed
+
+- Fix a freeze during config reload if the `static_host_map` config was changed. (#886)
+
+## [1.7.1] - 2023-05-18
+
+### Fixed
+
+- Fix IPv4 addresses returned by `static_host_map` DNS lookup queries being
+  treated as IPv6 addresses. (#877)
+
+## [1.7.0] - 2023-05-17
+
+### Added
+
+- `nebula-cert ca` now supports encrypting the CA's private key with a
+  passphrase. Pass `-encrypt` in order to be prompted for a passphrase.
+  Encryption is performed using AES-256-GCM and Argon2id for KDF. KDF
+  parameters default to RFC recommendations, but can be overridden via CLI
+  flags `-argon-memory`, `-argon-parallelism`, and `-argon-iterations`. (#386)
+
+- Support for curve P256 and BoringCrypto has been added. See README section
+  "Curve P256 and BoringCrypto" for more details. (#865, #861, #769, #856, #803)
+
+- New firewall rule `local_cidr`. This could be used to filter destinations
+  when using `unsafe_routes`. (#507)
+
+- Add `unsafe_route` option `install`. This controls whether the route is
+  installed in the systems routing table. (#831)
+
+- Add `tun.use_system_route_table` option. Set to true to manage unsafe routes
+  directly on the system route table with gateway routes instead of in Nebula
+  configuration files. This is only supported on Linux. (#839)
+
+- The metric `certificate.ttl_seconds` is now exposed via stats. (#782)
+
+- Add `punchy.respond_delay` option. This allows you to change the delay
+  before attempting punchy.respond. Default is 5 seconds. (#721)
+
+- Added SSH commands to allow the capture of a mutex profile. (#737)
+
+- You can now set `lighthouse.calculated_remotes` to make it possible to do
+  handshakes without a lighthouse in certain configurations. (#759)
+
+- The firewall can be configured to send REJECT replies instead of the default
+  DROP behavior. (#738)
+
+- For macOS, an example launchd configuration file is now provided. (#762)
+
+### Changed
+
+- Lighthouses and other `static_host_map` entries that use DNS names will now
+  be automatically refreshed to detect when the IP address changes. (#796)
+
+- Lighthouses send ACK replies back to clients so that they do not fall into
+  connection testing as often by clients. (#851, #408)
+
+- Allow the `listen.host` option to contain a hostname. (#825)
+
+- When Nebula switches to a new certificate (such as via SIGHUP), we now
+  rehandshake with all existing tunnels. This allows firewall groups to be
+  updated and `pki.disconnect_invalid` to know about the new certificate
+  expiration time. (#838, #857, #842, #840, #835, #828, #820, #807)
+
+### Fixed
+
+- Always disconnect blocklisted hosts, even if `pki.disconnect_invalid` is
+  not set. (#858)
+
+- Dependencies updated and go1.20 required. (#780, #824, #855, #854)
+
+- Fix possible race condition with relays. (#827)
+
+- FreeBSD: Fix connection to the localhost's own Nebula IP. (#808)
+
+- Normalize and document some common log field values. (#837, #811)
+
+- Fix crash if you set unlucky values for the firewall timeout configuration
+  options. (#802)
+
+- Make DNS queries case insensitive. (#793)
+
+- Update example systemd configurations to want `nss-lookup`. (#791)
+
+- Errors with SSH commands now go to the SSH tunnel instead of stderr. (#757)
+
+- Fix a hang when shutting down Android. (#772)
+
+## [1.6.1] - 2022-09-26
+
+### Fixed
+
+- Refuse to process underlay packets received from overlay IPs. This prevents
+  confusion on hosts that have unsafe routes configured. (#741)
+
+- The ssh `reload` command did not work on Windows, since it relied on sending
+  a SIGHUP signal internally. This has been fixed. (#725)
+
+- A regression in v1.5.2 that broke unsafe routes on Mobile clients has been
+  fixed. (#729)
+
 ## [1.6.0] - 2022-06-30
 
 ### Added
@@ -385,7 +687,21 @@ created.)
 
 - Initial public release.
 
-[Unreleased]: https://github.com/slackhq/nebula/compare/v1.6.0...HEAD
+[Unreleased]: https://github.com/slackhq/nebula/compare/v1.9.6...HEAD
+[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
+[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
+[1.9.1]: https://github.com/slackhq/nebula/releases/tag/v1.9.1
+[1.9.0]: https://github.com/slackhq/nebula/releases/tag/v1.9.0
+[1.8.2]: https://github.com/slackhq/nebula/releases/tag/v1.8.2
+[1.8.1]: https://github.com/slackhq/nebula/releases/tag/v1.8.1
+[1.8.0]: https://github.com/slackhq/nebula/releases/tag/v1.8.0
+[1.7.2]: https://github.com/slackhq/nebula/releases/tag/v1.7.2
+[1.7.1]: https://github.com/slackhq/nebula/releases/tag/v1.7.1
+[1.7.0]: https://github.com/slackhq/nebula/releases/tag/v1.7.0
+[1.6.1]: https://github.com/slackhq/nebula/releases/tag/v1.6.1
 [1.6.0]: https://github.com/slackhq/nebula/releases/tag/v1.6.0
 [1.5.2]: https://github.com/slackhq/nebula/releases/tag/v1.5.2
 [1.5.0]: https://github.com/slackhq/nebula/releases/tag/v1.5.0

LOGGING.md

@@ -0,0 +1,37 @@
+### Logging conventions
+
+A log message (the string/format passed to `Info`, `Error`, `Debug` etc, as well as their `Sprintf` counterparts) should
+be a descriptive message about the event and may contain specific identifying characteristics. Regardless of the
+level of detail in the message identifying characteristics should always be included via `WithField`, `WithFields` or
+`WithError`
+
+If an error is being logged use `l.WithError(err)` so that there is better discoverability about the event as well
+as the specific error condition.
+
+#### Common fields
+
+- `cert` - a `cert.NebulaCertificate` object, do not `.String()` this manually, `logrus` will marshal objects properly
+  for the formatter it is using.
+- `fingerprint` - a single `NebeulaCertificate` hex encoded fingerprint
+- `fingerprints` - an array of `NebulaCertificate` hex encoded fingerprints
+- `fwPacket` - a FirewallPacket object
+- `handshake` - an object containing:
+    - `stage` - the current stage counter
+    - `style` - noise handshake style `ix_psk0`, `xx`, etc
+- `header` - a nebula header object
+- `udpAddr` - a `net.UDPAddr` object
+- `udpIp` - a udp ip address
+- `vpnIp` - vpn ip of the host (remote or local)
+- `relay` - the vpnIp of the relay host that is or should be handling the relay packet
+- `relayFrom` - The vpnIp of the initial sender of the relayed packet 
+- `relayTo` - The vpnIp of the final destination of a relayed packet
+
+#### Example:
+
+```
+l.WithError(err).
+    WithField("vpnIp", IntIp(hostinfo.hostId)).
+    WithField("udpAddr", addr).
+    WithField("handshake", m{"stage": 1, "style": "ix"}).
+    Info("Invalid certificate from host")
+```

Makefile

@@ -1,20 +1,14 @@
-GOMINVERSION = 1.18
 NEBULA_CMD_PATH = "./cmd/nebula"
-GO111MODULE = on
-export GO111MODULE
 CGO_ENABLED = 0
 export CGO_ENABLED
 
 # Set up OS specific bits
 ifeq ($(OS),Windows_NT)
-	#TODO: we should be able to ditch awk as well
-	GOVERSION := $(shell go version | awk "{print substr($$3, 3)}")
-	GOISMIN := $(shell IF "$(GOVERSION)" GEQ "$(GOMINVERSION)" ECHO 1)
 	NEBULA_CMD_SUFFIX = .exe
 	NULL_FILE = nul
+	# RIO on windows does pointer stuff that makes go vet angry
+	VET_FLAGS = -unsafeptr=false
 else
-	GOVERSION := $(shell go version | awk '{print substr($$3, 3)}')
-	GOISMIN := $(shell expr "$(GOVERSION)" ">=" "$(GOMINVERSION)")
 	NEBULA_CMD_SUFFIX =
 	NULL_FILE = /dev/null
 endif
@@ -28,6 +22,9 @@ ifndef BUILD_NUMBER
 	endif
 endif
 
+DOCKER_IMAGE_REPO ?= nebulaoss/nebula
+DOCKER_IMAGE_TAG ?= latest
+
 LDFLAGS = -X main.Build=$(BUILD_NUMBER)
 
 ALL_LINUX = linux-amd64 \
@@ -42,12 +39,24 @@ ALL_LINUX = linux-amd64 \
 	linux-mips64 \
 	linux-mips64le \
 	linux-mips-softfloat \
-	linux-riscv64
+	linux-riscv64 \
+        linux-loong64
+
+ALL_FREEBSD = freebsd-amd64 \
+	freebsd-arm64
+
+ALL_OPENBSD = openbsd-amd64 \
+	openbsd-arm64
+
+ALL_NETBSD = netbsd-amd64 \
+ 	netbsd-arm64
 
 ALL = $(ALL_LINUX) \
+	$(ALL_FREEBSD) \
+	$(ALL_OPENBSD) \
+	$(ALL_NETBSD) \
 	darwin-amd64 \
 	darwin-arm64 \
-	freebsd-amd64 \
 	windows-amd64 \
 	windows-arm64
 
@@ -66,13 +75,26 @@ e2evvv: e2ev
 e2evvvv: TEST_ENV += TEST_LOGS=3
 e2evvvv: e2ev
 
+e2e-bench: TEST_FLAGS = -bench=. -benchmem -run=^$
+e2e-bench: e2e
+
+DOCKER_BIN = build/linux-amd64/nebula build/linux-amd64/nebula-cert
+
 all: $(ALL:%=build/%/nebula) $(ALL:%=build/%/nebula-cert)
 
+docker: docker/linux-$(shell go env GOARCH)
+
 release: $(ALL:%=build/nebula-%.tar.gz)
 
 release-linux: $(ALL_LINUX:%=build/nebula-%.tar.gz)
 
-release-freebsd: build/nebula-freebsd-amd64.tar.gz
+release-freebsd: $(ALL_FREEBSD:%=build/nebula-%.tar.gz)
+
+release-openbsd: $(ALL_OPENBSD:%=build/nebula-%.tar.gz)
+
+release-netbsd: $(ALL_NETBSD:%=build/nebula-%.tar.gz)
+
+release-boringcrypto: build/nebula-linux-$(shell go env GOARCH)-boringcrypto.tar.gz
 
 BUILD_ARGS = -trimpath
 
@@ -88,6 +110,12 @@ bin-darwin: build/darwin-amd64/nebula build/darwin-amd64/nebula-cert
 bin-freebsd: build/freebsd-amd64/nebula build/freebsd-amd64/nebula-cert
 	mv $? .
 
+bin-freebsd-arm64: build/freebsd-arm64/nebula build/freebsd-arm64/nebula-cert
+	mv $? .
+
+bin-boringcrypto: build/linux-$(shell go env GOARCH)-boringcrypto/nebula build/linux-$(shell go env GOARCH)-boringcrypto/nebula-cert
+	mv $? .
+
 bin:
 	go build $(BUILD_ARGS) -ldflags "$(LDFLAGS)" -o ./nebula${NEBULA_CMD_SUFFIX} ${NEBULA_CMD_PATH}
 	go build $(BUILD_ARGS) -ldflags "$(LDFLAGS)" -o ./nebula-cert${NEBULA_CMD_SUFFIX} ./cmd/nebula-cert
@@ -102,6 +130,10 @@ build/linux-mips-%: GOENV += GOMIPS=$(word 3, $(subst -, ,$*))
 # Build an extra small binary for mips-softfloat
 build/linux-mips-softfloat/%: LDFLAGS += -s -w
 
+# boringcrypto
+build/linux-amd64-boringcrypto/%: GOENV += GOEXPERIMENT=boringcrypto CGO_ENABLED=1
+build/linux-arm64-boringcrypto/%: GOENV += GOEXPERIMENT=boringcrypto CGO_ENABLED=1
+
 build/%/nebula: .FORCE
 	GOOS=$(firstword $(subst -, , $*)) \
 		GOARCH=$(word 2, $(subst -, ,$*)) $(GOENV) \
@@ -124,16 +156,28 @@ build/nebula-%.tar.gz: build/%/nebula build/%/nebula-cert
 build/nebula-%.zip: build/%/nebula.exe build/%/nebula-cert.exe
 	cd build/$* && zip ../nebula-$*.zip nebula.exe nebula-cert.exe
 
+docker/%: build/%/nebula build/%/nebula-cert
+	docker build . $(DOCKER_BUILD_ARGS) -f docker/Dockerfile --platform "$(subst -,/,$*)" --tag "${DOCKER_IMAGE_REPO}:${DOCKER_IMAGE_TAG}" --tag "${DOCKER_IMAGE_REPO}:$(BUILD_NUMBER)"
+
 vet:
-	go vet -v ./...
+	go vet $(VET_FLAGS) -v ./...
 
 test:
 	go test -v ./...
 
+test-boringcrypto:
+	GOEXPERIMENT=boringcrypto CGO_ENABLED=1 go test -v ./...
+
 test-cov-html:
 	go test -coverprofile=coverage.out
 	go tool cover -html=coverage.out
 
+build-test-mobile:
+	GOARCH=amd64 GOOS=ios go build $(shell go list ./... | grep -v '/cmd/\|/examples/')
+	GOARCH=arm64 GOOS=ios go build $(shell go list ./... | grep -v '/cmd/\|/examples/')
+	GOARCH=amd64 GOOS=android go build $(shell go list ./... | grep -v '/cmd/\|/examples/')
+	GOARCH=arm64 GOOS=android go build $(shell go list ./... | grep -v '/cmd/\|/examples/')
+
 bench:
 	go test -bench=.
 
@@ -167,14 +211,21 @@ bin-docker: bin build/linux-amd64/nebula build/linux-amd64/nebula-cert
 smoke-docker: bin-docker
 	cd .github/workflows/smoke/ && ./build.sh
 	cd .github/workflows/smoke/ && ./smoke.sh
+	cd .github/workflows/smoke/ && NAME="smoke-p256" CURVE="P256" ./build.sh
+	cd .github/workflows/smoke/ && NAME="smoke-p256" ./smoke.sh
 
 smoke-relay-docker: bin-docker
 	cd .github/workflows/smoke/ && ./build-relay.sh
 	cd .github/workflows/smoke/ && ./smoke-relay.sh
 
 smoke-docker-race: BUILD_ARGS = -race
+smoke-docker-race: CGO_ENABLED = 1
 smoke-docker-race: smoke-docker
 
+smoke-vagrant/%: bin-docker build/%/nebula
+	cd .github/workflows/smoke/ && ./build.sh $*
+	cd .github/workflows/smoke/ && ./smoke-vagrant.sh $*
+
 .FORCE:
-.PHONY: e2e e2ev e2evv e2evvv e2evvvv test test-cov-html bench bench-cpu bench-cpu-long bin proto release service smoke-docker smoke-docker-race
+.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

@@ -8,7 +8,7 @@ and tunneling, and each of those individual pieces existed before Nebula in vari
 What makes Nebula different to existing offerings is that it brings all of these ideas together,
 resulting in a sum that is greater than its individual parts.
 
-Further documentation can be found [here](https://www.defined.net/nebula/).
+Further documentation can be found [here](https://nebula.defined.net/docs/).
 
 You can read more about Nebula [here](https://medium.com/p/884110a5579).
 
@@ -27,16 +27,36 @@ Check the [releases](https://github.com/slackhq/nebula/releases/latest) page for
 
 #### Distribution Packages
 
-- [Arch Linux](https://archlinux.org/packages/community/x86_64/nebula/)
+- [Arch Linux](https://archlinux.org/packages/extra/x86_64/nebula/)
     ```
     $ sudo pacman -S nebula
     ```
-- [Fedora Linux](https://copr.fedorainfracloud.org/coprs/jdoss/nebula/)
+
+- [Fedora Linux](https://src.fedoraproject.org/rpms/nebula)
     ```
-    $ sudo dnf copr enable jdoss/nebula
     $ sudo dnf install nebula
     ```
 
+- [Debian Linux](https://packages.debian.org/source/stable/nebula)
+    ```
+    $ sudo apt install nebula
+    ```
+
+- [Alpine Linux](https://pkgs.alpinelinux.org/packages?name=nebula)
+    ```
+    $ sudo apk add nebula
+    ```
+
+- [macOS Homebrew](https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/nebula.rb)
+    ```
+    $ brew install nebula
+    ```
+
+- [Docker](https://hub.docker.com/r/nebulaoss/nebula)
+    ```
+    $ docker pull nebulaoss/nebula
+    ```
+
 #### Mobile
 
 - [iOS](https://apps.apple.com/us/app/mobile-nebula/id1509587936?itsct=apps_box&itscg=30200)
@@ -93,18 +113,18 @@ Download a copy of the nebula [example configuration](https://github.com/slackhq
 
 #### 6. Copy nebula credentials, configuration, and binaries to each host
 
-For each host, copy the nebula binary to the host, along with `config.yaml` from step 5, and the files `ca.crt`, `{host}.crt`, and `{host}.key` from step 4.
+For each host, copy the nebula binary to the host, along with `config.yml` from step 5, and the files `ca.crt`, `{host}.crt`, and `{host}.key` from step 4.
 
 **DO NOT COPY `ca.key` TO INDIVIDUAL NODES.**
 
 #### 7. Run nebula on each host
 ```
-./nebula -config /path/to/config.yaml
+./nebula -config /path/to/config.yml
 ```
 
 ## Building Nebula from source
 
-Download go and clone this repo. Change to the nebula directory.
+Make sure you have [go](https://go.dev/doc/install) installed and clone this repo. Change to the nebula directory.
 
 To build nebula for all platforms:
 `make all`
@@ -114,6 +134,17 @@ To build nebula for a specific platform (ex, Windows):
 
 See the [Makefile](Makefile) for more details on build targets
 
+## Curve P256 and BoringCrypto
+
+The default curve used for cryptographic handshakes and signatures is Curve25519. This is the recommended setting for most users. If your deployment has certain compliance requirements, you have the option of creating your CA using `nebula-cert ca -curve P256` to use NIST Curve P256. The CA will then sign certificates using ECDSA P256, and any hosts using these certificates will use P256 for ECDH handshakes.
+
+In addition, Nebula can be built using the [BoringCrypto GOEXPERIMENT](https://github.com/golang/go/blob/go1.20/src/crypto/internal/boring/README.md) by running either of the following make targets:
+
+    make bin-boringcrypto
+    make release-boringcrypto
+
+This is not the recommended default deployment, but may be useful based on your compliance requirements.
+
 ## Credits
 
 Nebula was created at Slack Technologies, Inc by Nate Brown and Ryan Huber, with contributions from Oliver Fross, Alan Lam, Wade Simmons, and Lining Wang.

SECURITY.md

@@ -0,0 +1,12 @@
+Security Policy
+===============
+
+Reporting a Vulnerability
+-------------------------
+
+If you believe you have found a security vulnerability with Nebula, please let
+us know right away. We will investigate all reports and do our best to quickly
+fix valid issues.
+
+You can submit your report on [HackerOne](https://hackerone.com/slack) and our
+security team will respond as soon as possible.

allow_list.go

@@ -2,17 +2,16 @@ package nebula
 
 import (
 	"fmt"
-	"net"
+	"net/netip"
 	"regexp"
 
-	"github.com/slackhq/nebula/cidr"
+	"github.com/gaissmai/bart"
 	"github.com/slackhq/nebula/config"
-	"github.com/slackhq/nebula/iputil"
 )
 
 type AllowList struct {
 	// The values of this cidrTree are `bool`, signifying allow/deny
-	cidrTree *cidr.Tree6
+	cidrTree *bart.Table[bool]
 }
 
 type RemoteAllowList struct {
@@ -20,7 +19,7 @@ type RemoteAllowList struct {
 
 	// Inside Range Specific, keys of this tree are inside CIDRs and values
 	// are *AllowList
-	insideAllowLists *cidr.Tree6
+	insideAllowLists *bart.Table[*AllowList]
 }
 
 type LocalAllowList struct {
@@ -88,7 +87,7 @@ func newAllowList(k string, raw interface{}, handleKey func(key string, value in
 		return nil, fmt.Errorf("config `%s` has invalid type: %T", k, raw)
 	}
 
-	tree := cidr.NewTree6()
+	tree := new(bart.Table[bool])
 
 	// Keep track of the rules we have added for both ipv4 and ipv6
 	type allowListRules struct {
@@ -122,18 +121,20 @@ func newAllowList(k string, raw interface{}, handleKey func(key string, value in
 			return nil, fmt.Errorf("config `%s` has invalid value (type %T): %v", k, rawValue, rawValue)
 		}
 
-		_, ipNet, err := net.ParseCIDR(rawCIDR)
+		ipNet, err := netip.ParsePrefix(rawCIDR)
 		if err != nil {
-			return nil, fmt.Errorf("config `%s` has invalid CIDR: %s", k, rawCIDR)
+			return nil, fmt.Errorf("config `%s` has invalid CIDR: %s. %w", k, rawCIDR, err)
 		}
 
-		// TODO: should we error on duplicate CIDRs in the config?
-		tree.AddCIDR(ipNet, value)
+		ipNet = netip.PrefixFrom(ipNet.Addr().Unmap(), ipNet.Bits())
 
-		maskBits, maskSize := ipNet.Mask.Size()
+		// TODO: should we error on duplicate CIDRs in the config?
+		tree.Insert(ipNet, value)
+
+		maskBits := ipNet.Bits()
 
 		var rules *allowListRules
-		if maskSize == 32 {
+		if ipNet.Addr().Is4() {
 			rules = &rules4
 		} else {
 			rules = &rules6
@@ -156,8 +157,7 @@ func newAllowList(k string, raw interface{}, handleKey func(key string, value in
 
 	if !rules4.defaultSet {
 		if rules4.allValuesMatch {
-			_, zeroCIDR, _ := net.ParseCIDR("0.0.0.0/0")
-			tree.AddCIDR(zeroCIDR, !rules4.allValues)
+			tree.Insert(netip.PrefixFrom(netip.IPv4Unspecified(), 0), !rules4.allValues)
 		} else {
 			return nil, fmt.Errorf("config `%s` contains both true and false rules, but no default set for 0.0.0.0/0", k)
 		}
@@ -165,8 +165,7 @@ func newAllowList(k string, raw interface{}, handleKey func(key string, value in
 
 	if !rules6.defaultSet {
 		if rules6.allValuesMatch {
-			_, zeroCIDR, _ := net.ParseCIDR("::/0")
-			tree.AddCIDR(zeroCIDR, !rules6.allValues)
+			tree.Insert(netip.PrefixFrom(netip.IPv6Unspecified(), 0), !rules6.allValues)
 		} else {
 			return nil, fmt.Errorf("config `%s` contains both true and false rules, but no default set for ::/0", k)
 		}
@@ -218,13 +217,13 @@ func getAllowListInterfaces(k string, v interface{}) ([]AllowListNameRule, error
 	return nameRules, nil
 }
 
-func getRemoteAllowRanges(c *config.C, k string) (*cidr.Tree6, error) {
+func getRemoteAllowRanges(c *config.C, k string) (*bart.Table[*AllowList], error) {
 	value := c.Get(k)
 	if value == nil {
 		return nil, nil
 	}
 
-	remoteAllowRanges := cidr.NewTree6()
+	remoteAllowRanges := new(bart.Table[*AllowList])
 
 	rawMap, ok := value.(map[interface{}]interface{})
 	if !ok {
@@ -241,60 +240,27 @@ func getRemoteAllowRanges(c *config.C, k string) (*cidr.Tree6, error) {
 			return nil, err
 		}
 
-		_, ipNet, err := net.ParseCIDR(rawCIDR)
+		ipNet, err := netip.ParsePrefix(rawCIDR)
 		if err != nil {
-			return nil, fmt.Errorf("config `%s` has invalid CIDR: %s", k, rawCIDR)
+			return nil, fmt.Errorf("config `%s` has invalid CIDR: %s. %w", k, rawCIDR, err)
 		}
 
-		remoteAllowRanges.AddCIDR(ipNet, allowList)
+		remoteAllowRanges.Insert(netip.PrefixFrom(ipNet.Addr().Unmap(), ipNet.Bits()), allowList)
 	}
 
 	return remoteAllowRanges, nil
 }
 
-func (al *AllowList) Allow(ip net.IP) bool {
+func (al *AllowList) Allow(ip netip.Addr) bool {
 	if al == nil {
 		return true
 	}
 
-	result := al.cidrTree.MostSpecificContains(ip)
-	switch v := result.(type) {
-	case bool:
-		return v
-	default:
-		panic(fmt.Errorf("invalid state, allowlist returned: %T %v", result, result))
-	}
+	result, _ := al.cidrTree.Lookup(ip)
+	return result
 }
 
-func (al *AllowList) AllowIpV4(ip iputil.VpnIp) bool {
-	if al == nil {
-		return true
-	}
-
-	result := al.cidrTree.MostSpecificContainsIpV4(ip)
-	switch v := result.(type) {
-	case bool:
-		return v
-	default:
-		panic(fmt.Errorf("invalid state, allowlist returned: %T %v", result, result))
-	}
-}
-
-func (al *AllowList) AllowIpV6(hi, lo uint64) bool {
-	if al == nil {
-		return true
-	}
-
-	result := al.cidrTree.MostSpecificContainsIpV6(hi, lo)
-	switch v := result.(type) {
-	case bool:
-		return v
-	default:
-		panic(fmt.Errorf("invalid state, allowlist returned: %T %v", result, result))
-	}
-}
-
-func (al *LocalAllowList) Allow(ip net.IP) bool {
+func (al *LocalAllowList) Allow(ip netip.Addr) bool {
 	if al == nil {
 		return true
 	}
@@ -316,45 +282,25 @@ func (al *LocalAllowList) AllowName(name string) bool {
 	return !al.nameRules[0].Allow
 }
 
-func (al *RemoteAllowList) AllowUnknownVpnIp(ip net.IP) bool {
+func (al *RemoteAllowList) AllowUnknownVpnIp(ip netip.Addr) bool {
 	if al == nil {
 		return true
 	}
 	return al.AllowList.Allow(ip)
 }
 
-func (al *RemoteAllowList) Allow(vpnIp iputil.VpnIp, ip net.IP) bool {
+func (al *RemoteAllowList) Allow(vpnIp netip.Addr, ip netip.Addr) bool {
 	if !al.getInsideAllowList(vpnIp).Allow(ip) {
 		return false
 	}
 	return al.AllowList.Allow(ip)
 }
 
-func (al *RemoteAllowList) AllowIpV4(vpnIp iputil.VpnIp, ip iputil.VpnIp) bool {
-	if al == nil {
-		return true
-	}
-	if !al.getInsideAllowList(vpnIp).AllowIpV4(ip) {
-		return false
-	}
-	return al.AllowList.AllowIpV4(ip)
-}
-
-func (al *RemoteAllowList) AllowIpV6(vpnIp iputil.VpnIp, hi, lo uint64) bool {
-	if al == nil {
-		return true
-	}
-	if !al.getInsideAllowList(vpnIp).AllowIpV6(hi, lo) {
-		return false
-	}
-	return al.AllowList.AllowIpV6(hi, lo)
-}
-
-func (al *RemoteAllowList) getInsideAllowList(vpnIp iputil.VpnIp) *AllowList {
+func (al *RemoteAllowList) getInsideAllowList(vpnIp netip.Addr) *AllowList {
 	if al.insideAllowLists != nil {
-		inside := al.insideAllowLists.MostSpecificContainsIpV4(vpnIp)
-		if inside != nil {
-			return inside.(*AllowList)
+		inside, ok := al.insideAllowLists.Lookup(vpnIp)
+		if ok {
+			return inside
 		}
 	}
 	return nil

allow_list_test.go

@@ -1,11 +1,11 @@
 package nebula
 
 import (
-	"net"
+	"net/netip"
 	"regexp"
 	"testing"
 
-	"github.com/slackhq/nebula/cidr"
+	"github.com/gaissmai/bart"
 	"github.com/slackhq/nebula/config"
 	"github.com/slackhq/nebula/test"
 	"github.com/stretchr/testify/assert"
@@ -18,7 +18,7 @@ func TestNewAllowListFromConfig(t *testing.T) {
 		"192.168.0.0": true,
 	}
 	r, err := newAllowListFromConfig(c, "allowlist", nil)
-	assert.EqualError(t, err, "config `allowlist` has invalid CIDR: 192.168.0.0")
+	assert.EqualError(t, err, "config `allowlist` has invalid CIDR: 192.168.0.0. netip.ParsePrefix(\"192.168.0.0\"): no '/'")
 	assert.Nil(t, r)
 
 	c.Settings["allowlist"] = map[interface{}]interface{}{
@@ -98,26 +98,26 @@ func TestNewAllowListFromConfig(t *testing.T) {
 }
 
 func TestAllowList_Allow(t *testing.T) {
-	assert.Equal(t, true, ((*AllowList)(nil)).Allow(net.ParseIP("1.1.1.1")))
+	assert.Equal(t, true, ((*AllowList)(nil)).Allow(netip.MustParseAddr("1.1.1.1")))
 
-	tree := cidr.NewTree6()
-	tree.AddCIDR(cidr.Parse("0.0.0.0/0"), true)
-	tree.AddCIDR(cidr.Parse("10.0.0.0/8"), false)
-	tree.AddCIDR(cidr.Parse("10.42.42.42/32"), true)
-	tree.AddCIDR(cidr.Parse("10.42.0.0/16"), true)
-	tree.AddCIDR(cidr.Parse("10.42.42.0/24"), true)
-	tree.AddCIDR(cidr.Parse("10.42.42.0/24"), false)
-	tree.AddCIDR(cidr.Parse("::1/128"), true)
-	tree.AddCIDR(cidr.Parse("::2/128"), false)
+	tree := new(bart.Table[bool])
+	tree.Insert(netip.MustParsePrefix("0.0.0.0/0"), true)
+	tree.Insert(netip.MustParsePrefix("10.0.0.0/8"), false)
+	tree.Insert(netip.MustParsePrefix("10.42.42.42/32"), true)
+	tree.Insert(netip.MustParsePrefix("10.42.0.0/16"), true)
+	tree.Insert(netip.MustParsePrefix("10.42.42.0/24"), true)
+	tree.Insert(netip.MustParsePrefix("10.42.42.0/24"), false)
+	tree.Insert(netip.MustParsePrefix("::1/128"), true)
+	tree.Insert(netip.MustParsePrefix("::2/128"), false)
 	al := &AllowList{cidrTree: tree}
 
-	assert.Equal(t, true, al.Allow(net.ParseIP("1.1.1.1")))
-	assert.Equal(t, false, al.Allow(net.ParseIP("10.0.0.4")))
-	assert.Equal(t, true, al.Allow(net.ParseIP("10.42.42.42")))
-	assert.Equal(t, false, al.Allow(net.ParseIP("10.42.42.41")))
-	assert.Equal(t, true, al.Allow(net.ParseIP("10.42.0.1")))
-	assert.Equal(t, true, al.Allow(net.ParseIP("::1")))
-	assert.Equal(t, false, al.Allow(net.ParseIP("::2")))
+	assert.Equal(t, true, al.Allow(netip.MustParseAddr("1.1.1.1")))
+	assert.Equal(t, false, al.Allow(netip.MustParseAddr("10.0.0.4")))
+	assert.Equal(t, true, al.Allow(netip.MustParseAddr("10.42.42.42")))
+	assert.Equal(t, false, al.Allow(netip.MustParseAddr("10.42.42.41")))
+	assert.Equal(t, true, al.Allow(netip.MustParseAddr("10.42.0.1")))
+	assert.Equal(t, true, al.Allow(netip.MustParseAddr("::1")))
+	assert.Equal(t, false, al.Allow(netip.MustParseAddr("::2")))
 }
 
 func TestLocalAllowList_AllowName(t *testing.T) {

boring.go

@@ -0,0 +1,8 @@
+//go:build boringcrypto
+// +build boringcrypto
+
+package nebula
+
+import "crypto/boring"
+
+var boringEnabled = boring.Enabled

calculated_remote.go

@@ -0,0 +1,159 @@
+package nebula
+
+import (
+	"encoding/binary"
+	"fmt"
+	"math"
+	"net"
+	"net/netip"
+	"strconv"
+
+	"github.com/gaissmai/bart"
+	"github.com/slackhq/nebula/config"
+)
+
+// This allows us to "guess" what the remote might be for a host while we wait
+// for the lighthouse response. See "lighthouse.calculated_remotes" in the
+// example config file.
+type calculatedRemote struct {
+	ipNet netip.Prefix
+	mask  netip.Prefix
+	port  uint32
+}
+
+func newCalculatedRemote(maskCidr netip.Prefix, port int) (*calculatedRemote, error) {
+	masked := maskCidr.Masked()
+	if port < 0 || port > math.MaxUint16 {
+		return nil, fmt.Errorf("invalid port: %d", port)
+	}
+
+	return &calculatedRemote{
+		ipNet: maskCidr,
+		mask:  masked,
+		port:  uint32(port),
+	}, nil
+}
+
+func (c *calculatedRemote) String() string {
+	return fmt.Sprintf("CalculatedRemote(mask=%v port=%d)", c.ipNet, c.port)
+}
+
+func (c *calculatedRemote) Apply(ip netip.Addr) *Ip4AndPort {
+	// Combine the masked bytes of the "mask" IP with the unmasked bytes
+	// of the overlay IP
+	if c.ipNet.Addr().Is4() {
+		return c.apply4(ip)
+	}
+	return c.apply6(ip)
+}
+
+func (c *calculatedRemote) apply4(ip netip.Addr) *Ip4AndPort {
+	//TODO: IPV6-WORK this can be less crappy
+	maskb := net.CIDRMask(c.mask.Bits(), c.mask.Addr().BitLen())
+	mask := binary.BigEndian.Uint32(maskb[:])
+
+	b := c.mask.Addr().As4()
+	maskIp := binary.BigEndian.Uint32(b[:])
+
+	b = ip.As4()
+	intIp := binary.BigEndian.Uint32(b[:])
+
+	return &Ip4AndPort{(maskIp & mask) | (intIp & ^mask), c.port}
+}
+
+func (c *calculatedRemote) apply6(ip netip.Addr) *Ip4AndPort {
+	//TODO: IPV6-WORK
+	panic("Can not calculate ipv6 remote addresses")
+}
+
+func NewCalculatedRemotesFromConfig(c *config.C, k string) (*bart.Table[[]*calculatedRemote], error) {
+	value := c.Get(k)
+	if value == nil {
+		return nil, nil
+	}
+
+	calculatedRemotes := new(bart.Table[[]*calculatedRemote])
+
+	rawMap, ok := value.(map[any]any)
+	if !ok {
+		return nil, fmt.Errorf("config `%s` has invalid type: %T", k, value)
+	}
+	for rawKey, rawValue := range rawMap {
+		rawCIDR, ok := rawKey.(string)
+		if !ok {
+			return nil, fmt.Errorf("config `%s` has invalid key (type %T): %v", k, rawKey, rawKey)
+		}
+
+		cidr, err := netip.ParsePrefix(rawCIDR)
+		if err != nil {
+			return nil, fmt.Errorf("config `%s` has invalid CIDR: %s", k, rawCIDR)
+		}
+
+		//TODO: IPV6-WORK this does not verify that rawValue contains the same bits as cidr here
+		entry, err := newCalculatedRemotesListFromConfig(rawValue)
+		if err != nil {
+			return nil, fmt.Errorf("config '%s.%s': %w", k, rawCIDR, err)
+		}
+
+		calculatedRemotes.Insert(cidr, entry)
+	}
+
+	return calculatedRemotes, nil
+}
+
+func newCalculatedRemotesListFromConfig(raw any) ([]*calculatedRemote, error) {
+	rawList, ok := raw.([]any)
+	if !ok {
+		return nil, fmt.Errorf("calculated_remotes entry has invalid type: %T", raw)
+	}
+
+	var l []*calculatedRemote
+	for _, e := range rawList {
+		c, err := newCalculatedRemotesEntryFromConfig(e)
+		if err != nil {
+			return nil, fmt.Errorf("calculated_remotes entry: %w", err)
+		}
+		l = append(l, c)
+	}
+
+	return l, nil
+}
+
+func newCalculatedRemotesEntryFromConfig(raw any) (*calculatedRemote, error) {
+	rawMap, ok := raw.(map[any]any)
+	if !ok {
+		return nil, fmt.Errorf("invalid type: %T", raw)
+	}
+
+	rawValue := rawMap["mask"]
+	if rawValue == nil {
+		return nil, fmt.Errorf("missing mask: %v", rawMap)
+	}
+	rawMask, ok := rawValue.(string)
+	if !ok {
+		return nil, fmt.Errorf("invalid mask (type %T): %v", rawValue, rawValue)
+	}
+	maskCidr, err := netip.ParsePrefix(rawMask)
+	if err != nil {
+		return nil, fmt.Errorf("invalid mask: %s", rawMask)
+	}
+
+	var port int
+	rawValue = rawMap["port"]
+	if rawValue == nil {
+		return nil, fmt.Errorf("missing port: %v", rawMap)
+	}
+	switch v := rawValue.(type) {
+	case int:
+		port = v
+	case string:
+		port, err = strconv.Atoi(v)
+		if err != nil {
+			return nil, fmt.Errorf("invalid port: %s: %w", v, err)
+		}
+	default:
+		return nil, fmt.Errorf("invalid port (type %T): %v", rawValue, rawValue)
+	}
+
+	return newCalculatedRemote(maskCidr, port)
+}

calculated_remote_test.go

@@ -0,0 +1,25 @@
+package nebula
+
+import (
+	"net/netip"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestCalculatedRemoteApply(t *testing.T) {
+	ipNet, err := netip.ParsePrefix("192.168.1.0/24")
+	require.NoError(t, err)
+
+	c, err := newCalculatedRemote(ipNet, 4242)
+	require.NoError(t, err)
+
+	input, err := netip.ParseAddr("10.0.10.182")
+	assert.NoError(t, err)
+
+	expected, err := netip.ParseAddr("192.168.1.182")
+	assert.NoError(t, err)
+
+	assert.Equal(t, NewIp4AndPortFromNetIP(expected, 4242), c.Apply(input))
+}

cert.go

@@ -1,163 +0,0 @@
-package nebula
-
-import (
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"strings"
-	"time"
-
-	"github.com/sirupsen/logrus"
-	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/config"
-)
-
-type CertState struct {
-	certificate         *cert.NebulaCertificate
-	rawCertificate      []byte
-	rawCertificateNoKey []byte
-	publicKey           []byte
-	privateKey          []byte
-}
-
-func NewCertState(certificate *cert.NebulaCertificate, privateKey []byte) (*CertState, error) {
-	// Marshal the certificate to ensure it is valid
-	rawCertificate, err := certificate.Marshal()
-	if err != nil {
-		return nil, fmt.Errorf("invalid nebula certificate on interface: %s", err)
-	}
-
-	publicKey := certificate.Details.PublicKey
-	cs := &CertState{
-		rawCertificate: rawCertificate,
-		certificate:    certificate, // PublicKey has been set to nil above
-		privateKey:     privateKey,
-		publicKey:      publicKey,
-	}
-
-	cs.certificate.Details.PublicKey = nil
-	rawCertNoKey, err := cs.certificate.Marshal()
-	if err != nil {
-		return nil, fmt.Errorf("error marshalling certificate no key: %s", err)
-	}
-	cs.rawCertificateNoKey = rawCertNoKey
-	// put public key back
-	cs.certificate.Details.PublicKey = cs.publicKey
-	return cs, nil
-}
-
-func NewCertStateFromConfig(c *config.C) (*CertState, error) {
-	var pemPrivateKey []byte
-	var err error
-
-	privPathOrPEM := c.GetString("pki.key", "")
-
-	if privPathOrPEM == "" {
-		return nil, errors.New("no pki.key path or PEM data provided")
-	}
-
-	if strings.Contains(privPathOrPEM, "-----BEGIN") {
-		pemPrivateKey = []byte(privPathOrPEM)
-		privPathOrPEM = "<inline>"
-	} else {
-		pemPrivateKey, err = ioutil.ReadFile(privPathOrPEM)
-		if err != nil {
-			return nil, fmt.Errorf("unable to read pki.key file %s: %s", privPathOrPEM, err)
-		}
-	}
-
-	rawKey, _, err := cert.UnmarshalX25519PrivateKey(pemPrivateKey)
-	if err != nil {
-		return nil, fmt.Errorf("error while unmarshaling pki.key %s: %s", privPathOrPEM, err)
-	}
-
-	var rawCert []byte
-
-	pubPathOrPEM := c.GetString("pki.cert", "")
-
-	if pubPathOrPEM == "" {
-		return nil, errors.New("no pki.cert path or PEM data provided")
-	}
-
-	if strings.Contains(pubPathOrPEM, "-----BEGIN") {
-		rawCert = []byte(pubPathOrPEM)
-		pubPathOrPEM = "<inline>"
-	} else {
-		rawCert, err = ioutil.ReadFile(pubPathOrPEM)
-		if err != nil {
-			return nil, fmt.Errorf("unable to read pki.cert file %s: %s", pubPathOrPEM, err)
-		}
-	}
-
-	nebulaCert, _, err := cert.UnmarshalNebulaCertificateFromPEM(rawCert)
-	if err != nil {
-		return nil, fmt.Errorf("error while unmarshaling pki.cert %s: %s", pubPathOrPEM, err)
-	}
-
-	if nebulaCert.Expired(time.Now()) {
-		return nil, fmt.Errorf("nebula certificate for this host is expired")
-	}
-
-	if len(nebulaCert.Details.Ips) == 0 {
-		return nil, fmt.Errorf("no IPs encoded in certificate")
-	}
-
-	if err = nebulaCert.VerifyPrivateKey(rawKey); err != nil {
-		return nil, fmt.Errorf("private key is not a pair with public key in nebula cert")
-	}
-
-	return NewCertState(nebulaCert, rawKey)
-}
-
-func loadCAFromConfig(l *logrus.Logger, c *config.C) (*cert.NebulaCAPool, error) {
-	var rawCA []byte
-	var err error
-
-	caPathOrPEM := c.GetString("pki.ca", "")
-	if caPathOrPEM == "" {
-		return nil, errors.New("no pki.ca path or PEM data provided")
-	}
-
-	if strings.Contains(caPathOrPEM, "-----BEGIN") {
-		rawCA = []byte(caPathOrPEM)
-
-	} else {
-		rawCA, err = ioutil.ReadFile(caPathOrPEM)
-		if err != nil {
-			return nil, fmt.Errorf("unable to read pki.ca file %s: %s", caPathOrPEM, err)
-		}
-	}
-
-	CAs, err := cert.NewCAPoolFromBytes(rawCA)
-	if errors.Is(err, cert.ErrExpired) {
-		var expired int
-		for _, cert := range CAs.CAs {
-			if cert.Expired(time.Now()) {
-				expired++
-				l.WithField("cert", cert).Warn("expired certificate present in CA pool")
-			}
-		}
-
-		if expired >= len(CAs.CAs) {
-			return nil, errors.New("no valid CA certificates present")
-		}
-
-	} else if err != nil {
-		return nil, fmt.Errorf("error while adding CA certificate to CA trust store: %s", err)
-	}
-
-	for _, fp := range c.GetStringSlice("pki.blocklist", []string{}) {
-		l.WithField("fingerprint", fp).Info("Blocklisting cert")
-		CAs.BlocklistFingerprint(fp)
-	}
-
-	// Support deprecated config for at least one minor release to allow for migrations
-	//TODO: remove in 2022 or later
-	for _, fp := range c.GetStringSlice("pki.blacklist", []string{}) {
-		l.WithField("fingerprint", fp).Info("Blocklisting cert")
-		l.Warn("pki.blacklist is deprecated and will not be supported in a future release. Please migrate your config to use pki.blocklist")
-		CAs.BlocklistFingerprint(fp)
-	}
-
-	return CAs, nil
-}

cert/ca.go

@@ -24,31 +24,39 @@ func NewCAPool() *NebulaCAPool {
 
 // NewCAPoolFromBytes will create a new CA pool from the provided
 // input bytes, which must be a PEM-encoded set of nebula certificates.
+// If the pool contains unsupported certificates, they will generate warnings
+// in the []error return arg.
 // If the pool contains any expired certificates, an ErrExpired will be
 // returned along with the pool. The caller must handle any such errors.
-func NewCAPoolFromBytes(caPEMs []byte) (*NebulaCAPool, error) {
+func NewCAPoolFromBytes(caPEMs []byte) (*NebulaCAPool, []error, error) {
 	pool := NewCAPool()
 	var err error
-	var expired bool
+	var warnings []error
+	good := 0
+
 	for {
 		caPEMs, err = pool.AddCACertificate(caPEMs)
 		if errors.Is(err, ErrExpired) {
-			expired = true
-			err = nil
-		}
-		if err != nil {
-			return nil, err
+			warnings = append(warnings, err)
+		} else if errors.Is(err, ErrInvalidPEMCertificateUnsupported) {
+			warnings = append(warnings, err)
+		} else if err != nil {
+			return nil, warnings, err
+		} else {
+			// Only consider a good certificate if there were no errors present
+			good++
 		}
+
 		if len(caPEMs) == 0 || strings.TrimSpace(string(caPEMs)) == "" {
 			break
 		}
 	}
 
-	if expired {
-		return pool, ErrExpired
+	if good == 0 {
+		return nil, warnings, errors.New("no valid CA certificates present")
 	}
 
-	return pool, nil
+	return pool, warnings, nil
 }
 
 // AddCACertificate verifies a Nebula CA certificate and adds it to the pool
@@ -91,9 +99,15 @@ func (ncp *NebulaCAPool) ResetCertBlocklist() {
 	ncp.certBlocklist = make(map[string]struct{})
 }
 
-// IsBlocklisted returns true if the fingerprint fails to generate or has been explicitly blocklisted
+// NOTE: This uses an internal cache for Sha256Sum() that will not be invalidated
+// automatically if you manually change any fields in the NebulaCertificate.
 func (ncp *NebulaCAPool) IsBlocklisted(c *NebulaCertificate) bool {
-	h, err := c.Sha256Sum()
+	return ncp.isBlocklistedWithCache(c, false)
+}
+
+// IsBlocklisted returns true if the fingerprint fails to generate or has been explicitly blocklisted
+func (ncp *NebulaCAPool) isBlocklistedWithCache(c *NebulaCertificate, useCache bool) bool {
+	h, err := c.sha256SumWithCache(useCache)
 	if err != nil {
 		return true
 	}

cert/cert.go

@@ -2,35 +2,56 @@ package cert
 
 import (
 	"bytes"
-	"crypto"
+	"crypto/ecdh"
+	"crypto/ecdsa"
+	"crypto/ed25519"
+	"crypto/elliptic"
 	"crypto/rand"
 	"crypto/sha256"
 	"encoding/binary"
 	"encoding/hex"
 	"encoding/json"
 	"encoding/pem"
+	"errors"
 	"fmt"
+	"math"
+	"math/big"
 	"net"
+	"sync/atomic"
 	"time"
 
 	"golang.org/x/crypto/curve25519"
-	"golang.org/x/crypto/ed25519"
 	"google.golang.org/protobuf/proto"
 )
 
 const publicKeyLen = 32
 
 const (
-	CertBanner              = "NEBULA CERTIFICATE"
-	X25519PrivateKeyBanner  = "NEBULA X25519 PRIVATE KEY"
-	X25519PublicKeyBanner   = "NEBULA X25519 PUBLIC KEY"
-	Ed25519PrivateKeyBanner = "NEBULA ED25519 PRIVATE KEY"
-	Ed25519PublicKeyBanner  = "NEBULA ED25519 PUBLIC KEY"
+	CertBanner                       = "NEBULA CERTIFICATE"
+	CertificateV2Banner              = "NEBULA CERTIFICATE V2"
+	X25519PrivateKeyBanner           = "NEBULA X25519 PRIVATE KEY"
+	X25519PublicKeyBanner            = "NEBULA X25519 PUBLIC KEY"
+	EncryptedEd25519PrivateKeyBanner = "NEBULA ED25519 ENCRYPTED PRIVATE KEY"
+	Ed25519PrivateKeyBanner          = "NEBULA ED25519 PRIVATE KEY"
+	Ed25519PublicKeyBanner           = "NEBULA ED25519 PUBLIC KEY"
+
+	P256PrivateKeyBanner               = "NEBULA P256 PRIVATE KEY"
+	P256PublicKeyBanner                = "NEBULA P256 PUBLIC KEY"
+	EncryptedECDSAP256PrivateKeyBanner = "NEBULA ECDSA P256 ENCRYPTED PRIVATE KEY"
+	ECDSAP256PrivateKeyBanner          = "NEBULA ECDSA P256 PRIVATE KEY"
 )
 
 type NebulaCertificate struct {
 	Details   NebulaCertificateDetails
 	Signature []byte
+
+	// the cached hex string of the calculated sha256sum
+	// for VerifyWithCache
+	sha256sum atomic.Pointer[string]
+
+	// the cached public key bytes if they were verified as the signer
+	// for VerifyWithCache
+	signatureVerified atomic.Pointer[[]byte]
 }
 
 type NebulaCertificateDetails struct {
@@ -46,10 +67,25 @@ type NebulaCertificateDetails struct {
 
 	// Map of groups for faster lookup
 	InvertedGroups map[string]struct{}
+
+	Curve Curve
+}
+
+type NebulaEncryptedData struct {
+	EncryptionMetadata NebulaEncryptionMetadata
+	Ciphertext         []byte
+}
+
+type NebulaEncryptionMetadata struct {
+	EncryptionAlgorithm string
+	Argon2Parameters    Argon2Parameters
 }
 
 type m map[string]interface{}
 
+// Returned if we try to unmarshal an encrypted private key without a passphrase
+var ErrPrivateKeyEncrypted = errors.New("private key must be decrypted")
+
 // UnmarshalNebulaCertificate will unmarshal a protobuf byte representation of a nebula cert
 func UnmarshalNebulaCertificate(b []byte) (*NebulaCertificate, error) {
 	if len(b) == 0 {
@@ -84,6 +120,7 @@ func UnmarshalNebulaCertificate(b []byte) (*NebulaCertificate, error) {
 			PublicKey:      make([]byte, len(rc.Details.PublicKey)),
 			IsCA:           rc.Details.IsCA,
 			InvertedGroups: make(map[string]struct{}),
+			Curve:          rc.Details.Curve,
 		},
 		Signature: make([]byte, len(rc.Signature)),
 	}
@@ -127,6 +164,9 @@ func UnmarshalNebulaCertificateFromPEM(b []byte) (*NebulaCertificate, []byte, er
 	if p == nil {
 		return nil, r, fmt.Errorf("input did not contain a valid PEM encoded block")
 	}
+	if p.Type == CertificateV2Banner {
+		return nil, r, fmt.Errorf("%w: %s", ErrInvalidPEMCertificateUnsupported, p.Type)
+	}
 	if p.Type != CertBanner {
 		return nil, r, fmt.Errorf("bytes did not contain a proper nebula certificate banner")
 	}
@@ -134,6 +174,28 @@ func UnmarshalNebulaCertificateFromPEM(b []byte) (*NebulaCertificate, []byte, er
 	return nc, r, err
 }
 
+func MarshalPrivateKey(curve Curve, b []byte) []byte {
+	switch curve {
+	case Curve_CURVE25519:
+		return pem.EncodeToMemory(&pem.Block{Type: X25519PrivateKeyBanner, Bytes: b})
+	case Curve_P256:
+		return pem.EncodeToMemory(&pem.Block{Type: P256PrivateKeyBanner, Bytes: b})
+	default:
+		return nil
+	}
+}
+
+func MarshalSigningPrivateKey(curve Curve, b []byte) []byte {
+	switch curve {
+	case Curve_CURVE25519:
+		return pem.EncodeToMemory(&pem.Block{Type: Ed25519PrivateKeyBanner, Bytes: b})
+	case Curve_P256:
+		return pem.EncodeToMemory(&pem.Block{Type: ECDSAP256PrivateKeyBanner, Bytes: b})
+	default:
+		return nil
+	}
+}
+
 // MarshalX25519PrivateKey is a simple helper to PEM encode an X25519 private key
 func MarshalX25519PrivateKey(b []byte) []byte {
 	return pem.EncodeToMemory(&pem.Block{Type: X25519PrivateKeyBanner, Bytes: b})
@@ -144,6 +206,90 @@ func MarshalEd25519PrivateKey(key ed25519.PrivateKey) []byte {
 	return pem.EncodeToMemory(&pem.Block{Type: Ed25519PrivateKeyBanner, Bytes: key})
 }
 
+func UnmarshalPrivateKey(b []byte) ([]byte, []byte, Curve, error) {
+	k, r := pem.Decode(b)
+	if k == nil {
+		return nil, r, 0, fmt.Errorf("input did not contain a valid PEM encoded block")
+	}
+	var expectedLen int
+	var curve Curve
+	switch k.Type {
+	case X25519PrivateKeyBanner:
+		expectedLen = 32
+		curve = Curve_CURVE25519
+	case P256PrivateKeyBanner:
+		expectedLen = 32
+		curve = Curve_P256
+	default:
+		return nil, r, 0, fmt.Errorf("bytes did not contain a proper nebula private key banner")
+	}
+	if len(k.Bytes) != expectedLen {
+		return nil, r, 0, fmt.Errorf("key was not %d bytes, is invalid %s private key", expectedLen, curve)
+	}
+	return k.Bytes, r, curve, nil
+}
+
+func UnmarshalSigningPrivateKey(b []byte) ([]byte, []byte, Curve, error) {
+	k, r := pem.Decode(b)
+	if k == nil {
+		return nil, r, 0, fmt.Errorf("input did not contain a valid PEM encoded block")
+	}
+	var curve Curve
+	switch k.Type {
+	case EncryptedEd25519PrivateKeyBanner:
+		return nil, nil, Curve_CURVE25519, ErrPrivateKeyEncrypted
+	case EncryptedECDSAP256PrivateKeyBanner:
+		return nil, nil, Curve_P256, ErrPrivateKeyEncrypted
+	case Ed25519PrivateKeyBanner:
+		curve = Curve_CURVE25519
+		if len(k.Bytes) != ed25519.PrivateKeySize {
+			return nil, r, 0, fmt.Errorf("key was not %d bytes, is invalid Ed25519 private key", ed25519.PrivateKeySize)
+		}
+	case ECDSAP256PrivateKeyBanner:
+		curve = Curve_P256
+		if len(k.Bytes) != 32 {
+			return nil, r, 0, fmt.Errorf("key was not 32 bytes, is invalid ECDSA P256 private key")
+		}
+	default:
+		return nil, r, 0, fmt.Errorf("bytes did not contain a proper nebula Ed25519/ECDSA private key banner")
+	}
+	return k.Bytes, r, curve, nil
+}
+
+// EncryptAndMarshalSigningPrivateKey is a simple helper to encrypt and PEM encode a private key
+func EncryptAndMarshalSigningPrivateKey(curve Curve, b []byte, passphrase []byte, kdfParams *Argon2Parameters) ([]byte, error) {
+	ciphertext, err := aes256Encrypt(passphrase, kdfParams, b)
+	if err != nil {
+		return nil, err
+	}
+
+	b, err = proto.Marshal(&RawNebulaEncryptedData{
+		EncryptionMetadata: &RawNebulaEncryptionMetadata{
+			EncryptionAlgorithm: "AES-256-GCM",
+			Argon2Parameters: &RawNebulaArgon2Parameters{
+				Version:     kdfParams.version,
+				Memory:      kdfParams.Memory,
+				Parallelism: uint32(kdfParams.Parallelism),
+				Iterations:  kdfParams.Iterations,
+				Salt:        kdfParams.salt,
+			},
+		},
+		Ciphertext: ciphertext,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	switch curve {
+	case Curve_CURVE25519:
+		return pem.EncodeToMemory(&pem.Block{Type: EncryptedEd25519PrivateKeyBanner, Bytes: b}), nil
+	case Curve_P256:
+		return pem.EncodeToMemory(&pem.Block{Type: EncryptedECDSAP256PrivateKeyBanner, Bytes: b}), nil
+	default:
+		return nil, fmt.Errorf("invalid curve: %v", curve)
+	}
+}
+
 // UnmarshalX25519PrivateKey will try to pem decode an X25519 private key, returning any other bytes b
 // or an error on failure
 func UnmarshalX25519PrivateKey(b []byte) ([]byte, []byte, error) {
@@ -168,9 +314,13 @@ func UnmarshalEd25519PrivateKey(b []byte) (ed25519.PrivateKey, []byte, error) {
 	if k == nil {
 		return nil, r, fmt.Errorf("input did not contain a valid PEM encoded block")
 	}
-	if k.Type != Ed25519PrivateKeyBanner {
+
+	if k.Type == EncryptedEd25519PrivateKeyBanner {
+		return nil, r, ErrPrivateKeyEncrypted
+	} else if k.Type != Ed25519PrivateKeyBanner {
 		return nil, r, fmt.Errorf("bytes did not contain a proper nebula Ed25519 private key banner")
 	}
+
 	if len(k.Bytes) != ed25519.PrivateKeySize {
 		return nil, r, fmt.Errorf("key was not 64 bytes, is invalid ed25519 private key")
 	}
@@ -178,6 +328,126 @@ func UnmarshalEd25519PrivateKey(b []byte) (ed25519.PrivateKey, []byte, error) {
 	return k.Bytes, r, nil
 }
 
+// UnmarshalNebulaEncryptedData will unmarshal a protobuf byte representation of a nebula cert into its
+// protobuf-generated struct.
+func UnmarshalNebulaEncryptedData(b []byte) (*NebulaEncryptedData, error) {
+	if len(b) == 0 {
+		return nil, fmt.Errorf("nil byte array")
+	}
+	var rned RawNebulaEncryptedData
+	err := proto.Unmarshal(b, &rned)
+	if err != nil {
+		return nil, err
+	}
+
+	if rned.EncryptionMetadata == nil {
+		return nil, fmt.Errorf("encoded EncryptionMetadata was nil")
+	}
+
+	if rned.EncryptionMetadata.Argon2Parameters == nil {
+		return nil, fmt.Errorf("encoded Argon2Parameters was nil")
+	}
+
+	params, err := unmarshalArgon2Parameters(rned.EncryptionMetadata.Argon2Parameters)
+	if err != nil {
+		return nil, err
+	}
+
+	ned := NebulaEncryptedData{
+		EncryptionMetadata: NebulaEncryptionMetadata{
+			EncryptionAlgorithm: rned.EncryptionMetadata.EncryptionAlgorithm,
+			Argon2Parameters:    *params,
+		},
+		Ciphertext: rned.Ciphertext,
+	}
+
+	return &ned, nil
+}
+
+func unmarshalArgon2Parameters(params *RawNebulaArgon2Parameters) (*Argon2Parameters, error) {
+	if params.Version < math.MinInt32 || params.Version > math.MaxInt32 {
+		return nil, fmt.Errorf("Argon2Parameters Version must be at least %d and no more than %d", math.MinInt32, math.MaxInt32)
+	}
+	if params.Memory <= 0 || params.Memory > math.MaxUint32 {
+		return nil, fmt.Errorf("Argon2Parameters Memory must be be greater than 0 and no more than %d KiB", uint32(math.MaxUint32))
+	}
+	if params.Parallelism <= 0 || params.Parallelism > math.MaxUint8 {
+		return nil, fmt.Errorf("Argon2Parameters Parallelism must be be greater than 0 and no more than %d", math.MaxUint8)
+	}
+	if params.Iterations <= 0 || params.Iterations > math.MaxUint32 {
+		return nil, fmt.Errorf("-argon-iterations must be be greater than 0 and no more than %d", uint32(math.MaxUint32))
+	}
+
+	return &Argon2Parameters{
+		version:     rune(params.Version),
+		Memory:      uint32(params.Memory),
+		Parallelism: uint8(params.Parallelism),
+		Iterations:  uint32(params.Iterations),
+		salt:        params.Salt,
+	}, nil
+
+}
+
+// DecryptAndUnmarshalSigningPrivateKey will try to pem decode and decrypt an Ed25519/ECDSA private key with
+// the given passphrase, returning any other bytes b or an error on failure
+func DecryptAndUnmarshalSigningPrivateKey(passphrase, b []byte) (Curve, []byte, []byte, error) {
+	var curve Curve
+
+	k, r := pem.Decode(b)
+	if k == nil {
+		return curve, nil, r, fmt.Errorf("input did not contain a valid PEM encoded block")
+	}
+
+	switch k.Type {
+	case EncryptedEd25519PrivateKeyBanner:
+		curve = Curve_CURVE25519
+	case EncryptedECDSAP256PrivateKeyBanner:
+		curve = Curve_P256
+	default:
+		return curve, nil, r, fmt.Errorf("bytes did not contain a proper nebula encrypted Ed25519/ECDSA private key banner")
+	}
+
+	ned, err := UnmarshalNebulaEncryptedData(k.Bytes)
+	if err != nil {
+		return curve, nil, r, err
+	}
+
+	var bytes []byte
+	switch ned.EncryptionMetadata.EncryptionAlgorithm {
+	case "AES-256-GCM":
+		bytes, err = aes256Decrypt(passphrase, &ned.EncryptionMetadata.Argon2Parameters, ned.Ciphertext)
+		if err != nil {
+			return curve, nil, r, err
+		}
+	default:
+		return curve, nil, r, fmt.Errorf("unsupported encryption algorithm: %s", ned.EncryptionMetadata.EncryptionAlgorithm)
+	}
+
+	switch curve {
+	case Curve_CURVE25519:
+		if len(bytes) != ed25519.PrivateKeySize {
+			return curve, nil, r, fmt.Errorf("key was not %d bytes, is invalid ed25519 private key", ed25519.PrivateKeySize)
+		}
+	case Curve_P256:
+		if len(bytes) != 32 {
+			return curve, nil, r, fmt.Errorf("key was not 32 bytes, is invalid ECDSA P256 private key")
+		}
+	}
+
+	return curve, bytes, r, nil
+}
+
+func MarshalPublicKey(curve Curve, b []byte) []byte {
+	switch curve {
+	case Curve_CURVE25519:
+		return pem.EncodeToMemory(&pem.Block{Type: X25519PublicKeyBanner, Bytes: b})
+	case Curve_P256:
+		return pem.EncodeToMemory(&pem.Block{Type: P256PublicKeyBanner, Bytes: b})
+	default:
+		return nil
+	}
+}
+
 // MarshalX25519PublicKey is a simple helper to PEM encode an X25519 public key
 func MarshalX25519PublicKey(b []byte) []byte {
 	return pem.EncodeToMemory(&pem.Block{Type: X25519PublicKeyBanner, Bytes: b})
@@ -188,6 +458,30 @@ func MarshalEd25519PublicKey(key ed25519.PublicKey) []byte {
 	return pem.EncodeToMemory(&pem.Block{Type: Ed25519PublicKeyBanner, Bytes: key})
 }
 
+func UnmarshalPublicKey(b []byte) ([]byte, []byte, Curve, error) {
+	k, r := pem.Decode(b)
+	if k == nil {
+		return nil, r, 0, fmt.Errorf("input did not contain a valid PEM encoded block")
+	}
+	var expectedLen int
+	var curve Curve
+	switch k.Type {
+	case X25519PublicKeyBanner:
+		expectedLen = 32
+		curve = Curve_CURVE25519
+	case P256PublicKeyBanner:
+		// Uncompressed
+		expectedLen = 65
+		curve = Curve_P256
+	default:
+		return nil, r, 0, fmt.Errorf("bytes did not contain a proper nebula public key banner")
+	}
+	if len(k.Bytes) != expectedLen {
+		return nil, r, 0, fmt.Errorf("key was not %d bytes, is invalid %s public key", expectedLen, curve)
+	}
+	return k.Bytes, r, curve, nil
+}
+
 // UnmarshalX25519PublicKey will try to pem decode an X25519 public key, returning any other bytes b
 // or an error on failure
 func UnmarshalX25519PublicKey(b []byte) ([]byte, []byte, error) {
@@ -223,27 +517,86 @@ func UnmarshalEd25519PublicKey(b []byte) (ed25519.PublicKey, []byte, error) {
 }
 
 // Sign signs a nebula cert with the provided private key
-func (nc *NebulaCertificate) Sign(key ed25519.PrivateKey) error {
+func (nc *NebulaCertificate) Sign(curve Curve, key []byte) error {
+	if curve != nc.Details.Curve {
+		return fmt.Errorf("curve in cert and private key supplied don't match")
+	}
+
 	b, err := proto.Marshal(nc.getRawDetails())
 	if err != nil {
 		return err
 	}
 
-	sig, err := key.Sign(rand.Reader, b, crypto.Hash(0))
-	if err != nil {
-		return err
+	var sig []byte
+
+	switch curve {
+	case Curve_CURVE25519:
+		signer := ed25519.PrivateKey(key)
+		sig = ed25519.Sign(signer, b)
+	case Curve_P256:
+		signer := &ecdsa.PrivateKey{
+			PublicKey: ecdsa.PublicKey{
+				Curve: elliptic.P256(),
+			},
+			// ref: https://github.com/golang/go/blob/go1.19/src/crypto/x509/sec1.go#L95
+			D: new(big.Int).SetBytes(key),
+		}
+		// ref: https://github.com/golang/go/blob/go1.19/src/crypto/x509/sec1.go#L119
+		signer.X, signer.Y = signer.Curve.ScalarBaseMult(key)
+
+		// We need to hash first for ECDSA
+		// - https://pkg.go.dev/crypto/ecdsa#SignASN1
+		hashed := sha256.Sum256(b)
+		sig, err = ecdsa.SignASN1(rand.Reader, signer, hashed[:])
+		if err != nil {
+			return err
+		}
+	default:
+		return fmt.Errorf("invalid curve: %s", nc.Details.Curve)
 	}
+
 	nc.Signature = sig
 	return nil
 }
 
 // CheckSignature verifies the signature against the provided public key
-func (nc *NebulaCertificate) CheckSignature(key ed25519.PublicKey) bool {
+func (nc *NebulaCertificate) CheckSignature(key []byte) bool {
 	b, err := proto.Marshal(nc.getRawDetails())
 	if err != nil {
 		return false
 	}
-	return ed25519.Verify(key, b, nc.Signature)
+	switch nc.Details.Curve {
+	case Curve_CURVE25519:
+		return ed25519.Verify(ed25519.PublicKey(key), b, nc.Signature)
+	case Curve_P256:
+		x, y := elliptic.Unmarshal(elliptic.P256(), key)
+		pubKey := &ecdsa.PublicKey{Curve: elliptic.P256(), X: x, Y: y}
+		hashed := sha256.Sum256(b)
+		return ecdsa.VerifyASN1(pubKey, hashed[:], nc.Signature)
+	default:
+		return false
+	}
+}
+
+// NOTE: This uses an internal cache that will not be invalidated automatically
+// if you manually change any fields in the NebulaCertificate.
+func (nc *NebulaCertificate) checkSignatureWithCache(key []byte, useCache bool) bool {
+	if !useCache {
+		return nc.CheckSignature(key)
+	}
+
+	if v := nc.signatureVerified.Load(); v != nil {
+		return bytes.Equal(*v, key)
+	}
+
+	verified := nc.CheckSignature(key)
+	if verified {
+		keyCopy := make([]byte, len(key))
+		copy(keyCopy, key)
+		nc.signatureVerified.Store(&keyCopy)
+	}
+
+	return verified
 }
 
 // Expired will return true if the nebula cert is too young or too old compared to the provided time, otherwise false
@@ -253,8 +606,27 @@ func (nc *NebulaCertificate) Expired(t time.Time) bool {
 
 // Verify will ensure a certificate is good in all respects (expiry, group membership, signature, cert blocklist, etc)
 func (nc *NebulaCertificate) Verify(t time.Time, ncp *NebulaCAPool) (bool, error) {
-	if ncp.IsBlocklisted(nc) {
-		return false, fmt.Errorf("certificate has been blocked")
+	return nc.verify(t, ncp, false)
+}
+
+// VerifyWithCache will ensure a certificate is good in all respects (expiry, group membership, signature, cert blocklist, etc)
+//
+// NOTE: This uses an internal cache that will not be invalidated automatically
+// if you manually change any fields in the NebulaCertificate.
+func (nc *NebulaCertificate) VerifyWithCache(t time.Time, ncp *NebulaCAPool) (bool, error) {
+	return nc.verify(t, ncp, true)
+}
+
+// ResetCache resets the cache used by VerifyWithCache.
+func (nc *NebulaCertificate) ResetCache() {
+	nc.sha256sum.Store(nil)
+	nc.signatureVerified.Store(nil)
+}
+
+// Verify will ensure a certificate is good in all respects (expiry, group membership, signature, cert blocklist, etc)
+func (nc *NebulaCertificate) verify(t time.Time, ncp *NebulaCAPool, useCache bool) (bool, error) {
+	if ncp.isBlocklistedWithCache(nc, useCache) {
+		return false, ErrBlockListed
 	}
 
 	signer, err := ncp.GetCAForCert(nc)
@@ -263,15 +635,15 @@ func (nc *NebulaCertificate) Verify(t time.Time, ncp *NebulaCAPool) (bool, error
 	}
 
 	if signer.Expired(t) {
-		return false, fmt.Errorf("root certificate is expired")
+		return false, ErrRootExpired
 	}
 
 	if nc.Expired(t) {
-		return false, fmt.Errorf("certificate is expired")
+		return false, ErrExpired
 	}
 
-	if !nc.CheckSignature(signer.Details.PublicKey) {
-		return false, fmt.Errorf("certificate signature did not match")
+	if !nc.checkSignatureWithCache(signer.Details.PublicKey, useCache) {
+		return false, ErrSignatureMismatch
 	}
 
 	if err := nc.CheckRootConstrains(signer); err != nil {
@@ -324,22 +696,52 @@ func (nc *NebulaCertificate) CheckRootConstrains(signer *NebulaCertificate) erro
 }
 
 // VerifyPrivateKey checks that the public key in the Nebula certificate and a supplied private key match
-func (nc *NebulaCertificate) VerifyPrivateKey(key []byte) error {
+func (nc *NebulaCertificate) VerifyPrivateKey(curve Curve, key []byte) error {
+	if curve != nc.Details.Curve {
+		return fmt.Errorf("curve in cert and private key supplied don't match")
+	}
 	if nc.Details.IsCA {
-		// the call to PublicKey below will panic slice bounds out of range otherwise
-		if len(key) != ed25519.PrivateKeySize {
-			return fmt.Errorf("key was not 64 bytes, is invalid ed25519 private key")
-		}
+		switch curve {
+		case Curve_CURVE25519:
+			// the call to PublicKey below will panic slice bounds out of range otherwise
+			if len(key) != ed25519.PrivateKeySize {
+				return fmt.Errorf("key was not 64 bytes, is invalid ed25519 private key")
+			}
 
-		if !ed25519.PublicKey(nc.Details.PublicKey).Equal(ed25519.PrivateKey(key).Public()) {
-			return fmt.Errorf("public key in cert and private key supplied don't match")
+			if !ed25519.PublicKey(nc.Details.PublicKey).Equal(ed25519.PrivateKey(key).Public()) {
+				return fmt.Errorf("public key in cert and private key supplied don't match")
+			}
+		case Curve_P256:
+			privkey, err := ecdh.P256().NewPrivateKey(key)
+			if err != nil {
+				return fmt.Errorf("cannot parse private key as P256")
+			}
+			pub := privkey.PublicKey().Bytes()
+			if !bytes.Equal(pub, nc.Details.PublicKey) {
+				return fmt.Errorf("public key in cert and private key supplied don't match")
+			}
+		default:
+			return fmt.Errorf("invalid curve: %s", curve)
 		}
 		return nil
 	}
 
-	pub, err := curve25519.X25519(key, curve25519.Basepoint)
-	if err != nil {
-		return err
+	var pub []byte
+	switch curve {
+	case Curve_CURVE25519:
+		var err error
+		pub, err = curve25519.X25519(key, curve25519.Basepoint)
+		if err != nil {
+			return err
+		}
+	case Curve_P256:
+		privkey, err := ecdh.P256().NewPrivateKey(key)
+		if err != nil {
+			return err
+		}
+		pub = privkey.PublicKey().Bytes()
+	default:
+		return fmt.Errorf("invalid curve: %s", curve)
 	}
 	if !bytes.Equal(pub, nc.Details.PublicKey) {
 		return fmt.Errorf("public key in cert and private key supplied don't match")
@@ -393,6 +795,7 @@ func (nc *NebulaCertificate) String() string {
 	s += fmt.Sprintf("\t\tIs CA: %v\n", nc.Details.IsCA)
 	s += fmt.Sprintf("\t\tIssuer: %s\n", nc.Details.Issuer)
 	s += fmt.Sprintf("\t\tPublic key: %x\n", nc.Details.PublicKey)
+	s += fmt.Sprintf("\t\tCurve: %s\n", nc.Details.Curve)
 	s += "\t}\n"
 	fp, err := nc.Sha256Sum()
 	if err == nil {
@@ -413,6 +816,7 @@ func (nc *NebulaCertificate) getRawDetails() *RawNebulaCertificateDetails {
 		NotAfter:  nc.Details.NotAfter.Unix(),
 		PublicKey: make([]byte, len(nc.Details.PublicKey)),
 		IsCA:      nc.Details.IsCA,
+		Curve:     nc.Details.Curve,
 	}
 
 	for _, ipNet := range nc.Details.Ips {
@@ -461,6 +865,25 @@ func (nc *NebulaCertificate) Sha256Sum() (string, error) {
 	return hex.EncodeToString(sum[:]), nil
 }
 
+// NOTE: This uses an internal cache that will not be invalidated automatically
+// if you manually change any fields in the NebulaCertificate.
+func (nc *NebulaCertificate) sha256SumWithCache(useCache bool) (string, error) {
+	if !useCache {
+		return nc.Sha256Sum()
+	}
+
+	if s := nc.sha256sum.Load(); s != nil {
+		return *s, nil
+	}
+	s, err := nc.Sha256Sum()
+	if err != nil {
+		return s, err
+	}
+
+	nc.sha256sum.Store(&s)
+	return s, nil
+}
+
 func (nc *NebulaCertificate) MarshalJSON() ([]byte, error) {
 	toString := func(ips []*net.IPNet) []string {
 		s := []string{}
@@ -482,6 +905,7 @@ func (nc *NebulaCertificate) MarshalJSON() ([]byte, error) {
 			"publicKey": fmt.Sprintf("%x", nc.Details.PublicKey),
 			"isCa":      nc.Details.IsCA,
 			"issuer":    nc.Details.Issuer,
+			"curve":     nc.Details.Curve.String(),
 		},
 		"fingerprint": fp,
 		"signature":   fmt.Sprintf("%x", nc.Signature),

cert/cert.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.0
-// 	protoc        v3.20.0
+// 	protoc-gen-go v1.30.0
+// 	protoc        v3.21.5
 // source: cert.proto
 
 package cert
@@ -20,6 +20,52 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type Curve int32
+
+const (
+	Curve_CURVE25519 Curve = 0
+	Curve_P256       Curve = 1
+)
+
+// Enum value maps for Curve.
+var (
+	Curve_name = map[int32]string{
+		0: "CURVE25519",
+		1: "P256",
+	}
+	Curve_value = map[string]int32{
+		"CURVE25519": 0,
+		"P256":       1,
+	}
+)
+
+func (x Curve) Enum() *Curve {
+	p := new(Curve)
+	*p = x
+	return p
+}
+
+func (x Curve) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Curve) Descriptor() protoreflect.EnumDescriptor {
+	return file_cert_proto_enumTypes[0].Descriptor()
+}
+
+func (Curve) Type() protoreflect.EnumType {
+	return &file_cert_proto_enumTypes[0]
+}
+
+func (x Curve) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Curve.Descriptor instead.
+func (Curve) EnumDescriptor() ([]byte, []int) {
+	return file_cert_proto_rawDescGZIP(), []int{0}
+}
+
 type RawNebulaCertificate struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -91,6 +137,7 @@ type RawNebulaCertificateDetails struct {
 	IsCA      bool     `protobuf:"varint,8,opt,name=IsCA,proto3" json:"IsCA,omitempty"`
 	// sha-256 of the issuer certificate, if this field is blank the cert is self-signed
 	Issuer []byte `protobuf:"bytes,9,opt,name=Issuer,proto3" json:"Issuer,omitempty"`
+	Curve  Curve  `protobuf:"varint,100,opt,name=curve,proto3,enum=cert.Curve" json:"curve,omitempty"`
 }
 
 func (x *RawNebulaCertificateDetails) Reset() {
@@ -188,6 +235,202 @@ func (x *RawNebulaCertificateDetails) GetIssuer() []byte {
 	return nil
 }
 
+func (x *RawNebulaCertificateDetails) GetCurve() Curve {
+	if x != nil {
+		return x.Curve
+	}
+	return Curve_CURVE25519
+}
+
+type RawNebulaEncryptedData struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	EncryptionMetadata *RawNebulaEncryptionMetadata `protobuf:"bytes,1,opt,name=EncryptionMetadata,proto3" json:"EncryptionMetadata,omitempty"`
+	Ciphertext         []byte                       `protobuf:"bytes,2,opt,name=Ciphertext,proto3" json:"Ciphertext,omitempty"`
+}
+
+func (x *RawNebulaEncryptedData) Reset() {
+	*x = RawNebulaEncryptedData{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_cert_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RawNebulaEncryptedData) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RawNebulaEncryptedData) ProtoMessage() {}
+
+func (x *RawNebulaEncryptedData) ProtoReflect() protoreflect.Message {
+	mi := &file_cert_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RawNebulaEncryptedData.ProtoReflect.Descriptor instead.
+func (*RawNebulaEncryptedData) Descriptor() ([]byte, []int) {
+	return file_cert_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *RawNebulaEncryptedData) GetEncryptionMetadata() *RawNebulaEncryptionMetadata {
+	if x != nil {
+		return x.EncryptionMetadata
+	}
+	return nil
+}
+
+func (x *RawNebulaEncryptedData) GetCiphertext() []byte {
+	if x != nil {
+		return x.Ciphertext
+	}
+	return nil
+}
+
+type RawNebulaEncryptionMetadata struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	EncryptionAlgorithm string                     `protobuf:"bytes,1,opt,name=EncryptionAlgorithm,proto3" json:"EncryptionAlgorithm,omitempty"`
+	Argon2Parameters    *RawNebulaArgon2Parameters `protobuf:"bytes,2,opt,name=Argon2Parameters,proto3" json:"Argon2Parameters,omitempty"`
+}
+
+func (x *RawNebulaEncryptionMetadata) Reset() {
+	*x = RawNebulaEncryptionMetadata{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_cert_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RawNebulaEncryptionMetadata) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RawNebulaEncryptionMetadata) ProtoMessage() {}
+
+func (x *RawNebulaEncryptionMetadata) ProtoReflect() protoreflect.Message {
+	mi := &file_cert_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RawNebulaEncryptionMetadata.ProtoReflect.Descriptor instead.
+func (*RawNebulaEncryptionMetadata) Descriptor() ([]byte, []int) {
+	return file_cert_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *RawNebulaEncryptionMetadata) GetEncryptionAlgorithm() string {
+	if x != nil {
+		return x.EncryptionAlgorithm
+	}
+	return ""
+}
+
+func (x *RawNebulaEncryptionMetadata) GetArgon2Parameters() *RawNebulaArgon2Parameters {
+	if x != nil {
+		return x.Argon2Parameters
+	}
+	return nil
+}
+
+type RawNebulaArgon2Parameters struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Version     int32  `protobuf:"varint,1,opt,name=version,proto3" json:"version,omitempty"` // rune in Go
+	Memory      uint32 `protobuf:"varint,2,opt,name=memory,proto3" json:"memory,omitempty"`
+	Parallelism uint32 `protobuf:"varint,4,opt,name=parallelism,proto3" json:"parallelism,omitempty"` // uint8 in Go
+	Iterations  uint32 `protobuf:"varint,3,opt,name=iterations,proto3" json:"iterations,omitempty"`
+	Salt        []byte `protobuf:"bytes,5,opt,name=salt,proto3" json:"salt,omitempty"`
+}
+
+func (x *RawNebulaArgon2Parameters) Reset() {
+	*x = RawNebulaArgon2Parameters{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_cert_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RawNebulaArgon2Parameters) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RawNebulaArgon2Parameters) ProtoMessage() {}
+
+func (x *RawNebulaArgon2Parameters) ProtoReflect() protoreflect.Message {
+	mi := &file_cert_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RawNebulaArgon2Parameters.ProtoReflect.Descriptor instead.
+func (*RawNebulaArgon2Parameters) Descriptor() ([]byte, []int) {
+	return file_cert_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *RawNebulaArgon2Parameters) GetVersion() int32 {
+	if x != nil {
+		return x.Version
+	}
+	return 0
+}
+
+func (x *RawNebulaArgon2Parameters) GetMemory() uint32 {
+	if x != nil {
+		return x.Memory
+	}
+	return 0
+}
+
+func (x *RawNebulaArgon2Parameters) GetParallelism() uint32 {
+	if x != nil {
+		return x.Parallelism
+	}
+	return 0
+}
+
+func (x *RawNebulaArgon2Parameters) GetIterations() uint32 {
+	if x != nil {
+		return x.Iterations
+	}
+	return 0
+}
+
+func (x *RawNebulaArgon2Parameters) GetSalt() []byte {
+	if x != nil {
+		return x.Salt
+	}
+	return nil
+}
+
 var File_cert_proto protoreflect.FileDescriptor
 
 var file_cert_proto_rawDesc = []byte{
@@ -199,7 +442,7 @@ var file_cert_proto_rawDesc = []byte{
 	0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x65, 0x44, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0x52, 0x07,
 	0x44, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0x12, 0x1c, 0x0a, 0x09, 0x53, 0x69, 0x67, 0x6e, 0x61,
 	0x74, 0x75, 0x72, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x09, 0x53, 0x69, 0x67, 0x6e,
-	0x61, 0x74, 0x75, 0x72, 0x65, 0x22, 0xf9, 0x01, 0x0a, 0x1b, 0x52, 0x61, 0x77, 0x4e, 0x65, 0x62,
+	0x61, 0x74, 0x75, 0x72, 0x65, 0x22, 0x9c, 0x02, 0x0a, 0x1b, 0x52, 0x61, 0x77, 0x4e, 0x65, 0x62,
 	0x75, 0x6c, 0x61, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x65, 0x44, 0x65,
 	0x74, 0x61, 0x69, 0x6c, 0x73, 0x12, 0x12, 0x0a, 0x04, 0x4e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20,
 	0x01, 0x28, 0x09, 0x52, 0x04, 0x4e, 0x61, 0x6d, 0x65, 0x12, 0x10, 0x0a, 0x03, 0x49, 0x70, 0x73,
@@ -215,9 +458,43 @@ var file_cert_proto_rawDesc = []byte{
 	0x69, 0x63, 0x4b, 0x65, 0x79, 0x12, 0x12, 0x0a, 0x04, 0x49, 0x73, 0x43, 0x41, 0x18, 0x08, 0x20,
 	0x01, 0x28, 0x08, 0x52, 0x04, 0x49, 0x73, 0x43, 0x41, 0x12, 0x16, 0x0a, 0x06, 0x49, 0x73, 0x73,
 	0x75, 0x65, 0x72, 0x18, 0x09, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x06, 0x49, 0x73, 0x73, 0x75, 0x65,
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-	0x65, 0x72, 0x74, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x72, 0x12, 0x21, 0x0a, 0x05, 0x63, 0x75, 0x72, 0x76, 0x65, 0x18, 0x64, 0x20, 0x01, 0x28, 0x0e,
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+	0x69, 0x74, 0x68, 0x6d, 0x12, 0x4b, 0x0a, 0x10, 0x41, 0x72, 0x67, 0x6f, 0x6e, 0x32, 0x50, 0x61,
+	0x72, 0x61, 0x6d, 0x65, 0x74, 0x65, 0x72, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1f,
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+	0x72, 0x67, 0x6f, 0x6e, 0x32, 0x50, 0x61, 0x72, 0x61, 0x6d, 0x65, 0x74, 0x65, 0x72, 0x73, 0x52,
+	0x10, 0x41, 0x72, 0x67, 0x6f, 0x6e, 0x32, 0x50, 0x61, 0x72, 0x61, 0x6d, 0x65, 0x74, 0x65, 0x72,
+	0x73, 0x22, 0xa3, 0x01, 0x0a, 0x19, 0x52, 0x61, 0x77, 0x4e, 0x65, 0x62, 0x75, 0x6c, 0x61, 0x41,
+	0x72, 0x67, 0x6f, 0x6e, 0x32, 0x50, 0x61, 0x72, 0x61, 0x6d, 0x65, 0x74, 0x65, 0x72, 0x73, 0x12,
+	0x18, 0x0a, 0x07, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05,
+	0x52, 0x07, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x12, 0x16, 0x0a, 0x06, 0x6d, 0x65, 0x6d,
+	0x6f, 0x72, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x06, 0x6d, 0x65, 0x6d, 0x6f, 0x72,
+	0x79, 0x12, 0x20, 0x0a, 0x0b, 0x70, 0x61, 0x72, 0x61, 0x6c, 0x6c, 0x65, 0x6c, 0x69, 0x73, 0x6d,
+	0x18, 0x04, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x0b, 0x70, 0x61, 0x72, 0x61, 0x6c, 0x6c, 0x65, 0x6c,
+	0x69, 0x73, 0x6d, 0x12, 0x1e, 0x0a, 0x0a, 0x69, 0x74, 0x65, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e,
+	0x73, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x0a, 0x69, 0x74, 0x65, 0x72, 0x61, 0x74, 0x69,
+	0x6f, 0x6e, 0x73, 0x12, 0x12, 0x0a, 0x04, 0x73, 0x61, 0x6c, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28,
+	0x0c, 0x52, 0x04, 0x73, 0x61, 0x6c, 0x74, 0x2a, 0x21, 0x0a, 0x05, 0x43, 0x75, 0x72, 0x76, 0x65,
+	0x12, 0x0e, 0x0a, 0x0a, 0x43, 0x55, 0x52, 0x56, 0x45, 0x32, 0x35, 0x35, 0x31, 0x39, 0x10, 0x00,
+	0x12, 0x08, 0x0a, 0x04, 0x50, 0x32, 0x35, 0x36, 0x10, 0x01, 0x42, 0x20, 0x5a, 0x1e, 0x67, 0x69,
+	0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x73, 0x6c, 0x61, 0x63, 0x6b, 0x68, 0x71,
+	0x2f, 0x6e, 0x65, 0x62, 0x75, 0x6c, 0x61, 0x2f, 0x63, 0x65, 0x72, 0x74, 0x62, 0x06, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -232,18 +509,26 @@ func file_cert_proto_rawDescGZIP() []byte {
 	return file_cert_proto_rawDescData
 }
 
-var file_cert_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_cert_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_cert_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
 var file_cert_proto_goTypes = []interface{}{
-	(*RawNebulaCertificate)(nil),        // 0: cert.RawNebulaCertificate
-	(*RawNebulaCertificateDetails)(nil), // 1: cert.RawNebulaCertificateDetails
+	(Curve)(0),                          // 0: cert.Curve
+	(*RawNebulaCertificate)(nil),        // 1: cert.RawNebulaCertificate
+	(*RawNebulaCertificateDetails)(nil), // 2: cert.RawNebulaCertificateDetails
+	(*RawNebulaEncryptedData)(nil),      // 3: cert.RawNebulaEncryptedData
+	(*RawNebulaEncryptionMetadata)(nil), // 4: cert.RawNebulaEncryptionMetadata
+	(*RawNebulaArgon2Parameters)(nil),   // 5: cert.RawNebulaArgon2Parameters
 }
 var file_cert_proto_depIdxs = []int32{
-	1, // 0: cert.RawNebulaCertificate.Details:type_name -> cert.RawNebulaCertificateDetails
-	1, // [1:1] is the sub-list for method output_type
-	1, // [1:1] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension extendee
-	0, // [0:1] is the sub-list for field type_name
+	2, // 0: cert.RawNebulaCertificate.Details:type_name -> cert.RawNebulaCertificateDetails
+	0, // 1: cert.RawNebulaCertificateDetails.curve:type_name -> cert.Curve
+	4, // 2: cert.RawNebulaEncryptedData.EncryptionMetadata:type_name -> cert.RawNebulaEncryptionMetadata
+	5, // 3: cert.RawNebulaEncryptionMetadata.Argon2Parameters:type_name -> cert.RawNebulaArgon2Parameters
+	4, // [4:4] is the sub-list for method output_type
+	4, // [4:4] is the sub-list for method input_type
+	4, // [4:4] is the sub-list for extension type_name
+	4, // [4:4] is the sub-list for extension extendee
+	0, // [0:4] is the sub-list for field type_name
 }
 
 func init() { file_cert_proto_init() }
@@ -276,19 +561,56 @@ func file_cert_proto_init() {
 				return nil
 			}
 		}
+		file_cert_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RawNebulaEncryptedData); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_cert_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RawNebulaEncryptionMetadata); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_cert_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RawNebulaArgon2Parameters); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_cert_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   2,
+			NumEnums:      1,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
 		GoTypes:           file_cert_proto_goTypes,
 		DependencyIndexes: file_cert_proto_depIdxs,
+		EnumInfos:         file_cert_proto_enumTypes,
 		MessageInfos:      file_cert_proto_msgTypes,
 	}.Build()
 	File_cert_proto = out.File

cert/cert.proto

@@ -5,6 +5,11 @@ option go_package = "github.com/slackhq/nebula/cert";
 
 //import "google/protobuf/timestamp.proto";
 
+enum Curve {
+  CURVE25519 = 0;
+  P256 = 1;
+}
+
 message RawNebulaCertificate {
     RawNebulaCertificateDetails Details = 1;
     bytes Signature = 2;
@@ -26,4 +31,24 @@ message RawNebulaCertificateDetails {
 
     // sha-256 of the issuer certificate, if this field is blank the cert is self-signed
     bytes Issuer = 9;
-}
+
+    Curve curve = 100;
+}
+
+message RawNebulaEncryptedData {
+	RawNebulaEncryptionMetadata EncryptionMetadata = 1;
+	bytes Ciphertext = 2;
+}
+
+message RawNebulaEncryptionMetadata {
+	string EncryptionAlgorithm = 1;
+	RawNebulaArgon2Parameters Argon2Parameters = 2;
+}
+
+message RawNebulaArgon2Parameters {
+	int32 version = 1; // rune in Go
+	uint32 memory = 2;
+	uint32 parallelism = 4; // uint8 in Go
+	uint32 iterations = 3;
+	bytes salt = 5;
+}

cert/cert_test.go

@@ -1,7 +1,11 @@
 package cert
 
 import (
+	"crypto/ecdh"
+	"crypto/ecdsa"
+	"crypto/elliptic"
 	"crypto/rand"
+	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -101,7 +105,49 @@ func TestNebulaCertificate_Sign(t *testing.T) {
 	pub, priv, err := ed25519.GenerateKey(rand.Reader)
 	assert.Nil(t, err)
 	assert.False(t, nc.CheckSignature(pub))
-	assert.Nil(t, nc.Sign(priv))
+	assert.Nil(t, nc.Sign(Curve_CURVE25519, priv))
+	assert.True(t, nc.CheckSignature(pub))
+
+	_, err = nc.Marshal()
+	assert.Nil(t, err)
+	//t.Log("Cert size:", len(b))
+}
+
+func TestNebulaCertificate_SignP256(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")
+
+	nc := NebulaCertificate{
+		Details: NebulaCertificateDetails{
+			Name: "testing",
+			Ips: []*net.IPNet{
+				{IP: net.ParseIP("10.1.1.1"), Mask: net.IPMask(net.ParseIP("255.255.255.0"))},
+				{IP: net.ParseIP("10.1.1.2"), Mask: net.IPMask(net.ParseIP("255.255.0.0"))},
+				{IP: net.ParseIP("10.1.1.3"), Mask: net.IPMask(net.ParseIP("255.0.255.0"))},
+			},
+			Subnets: []*net.IPNet{
+				{IP: net.ParseIP("9.1.1.1"), Mask: net.IPMask(net.ParseIP("255.0.255.0"))},
+				{IP: net.ParseIP("9.1.1.2"), Mask: net.IPMask(net.ParseIP("255.255.255.0"))},
+				{IP: net.ParseIP("9.1.1.3"), Mask: net.IPMask(net.ParseIP("255.255.0.0"))},
+			},
+			Groups:    []string{"test-group1", "test-group2", "test-group3"},
+			NotBefore: before,
+			NotAfter:  after,
+			PublicKey: pubKey,
+			IsCA:      false,
+			Curve:     Curve_P256,
+			Issuer:    "1234567890abcedfghij1234567890ab",
+		},
+	}
+
+	priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	pub := elliptic.Marshal(elliptic.P256(), priv.PublicKey.X, priv.PublicKey.Y)
+	rawPriv := priv.D.FillBytes(make([]byte, 32))
+
+	assert.Nil(t, err)
+	assert.False(t, nc.CheckSignature(pub))
+	assert.Nil(t, nc.Sign(Curve_P256, rawPriv))
 	assert.True(t, nc.CheckSignature(pub))
 
 	_, err = nc.Marshal()
@@ -153,7 +199,7 @@ func TestNebulaCertificate_MarshalJSON(t *testing.T) {
 	assert.Nil(t, err)
 	assert.Equal(
 		t,
-		"{\"details\":{\"groups\":[\"test-group1\",\"test-group2\",\"test-group3\"],\"ips\":[\"10.1.1.1/24\",\"10.1.1.2/16\",\"10.1.1.3/ff00ff00\"],\"isCa\":false,\"issuer\":\"1234567890abcedfghij1234567890ab\",\"name\":\"testing\",\"notAfter\":\"0000-11-30T02:00:00Z\",\"notBefore\":\"0000-11-30T01:00:00Z\",\"publicKey\":\"313233343536373839306162636564666768696a313233343536373839306162\",\"subnets\":[\"9.1.1.1/ff00ff00\",\"9.1.1.2/24\",\"9.1.1.3/16\"]},\"fingerprint\":\"26cb1c30ad7872c804c166b5150fa372f437aa3856b04edb4334b4470ec728e4\",\"signature\":\"313233343536373839306162636564666768696a313233343536373839306162\"}",
+		"{\"details\":{\"curve\":\"CURVE25519\",\"groups\":[\"test-group1\",\"test-group2\",\"test-group3\"],\"ips\":[\"10.1.1.1/24\",\"10.1.1.2/16\",\"10.1.1.3/ff00ff00\"],\"isCa\":false,\"issuer\":\"1234567890abcedfghij1234567890ab\",\"name\":\"testing\",\"notAfter\":\"0000-11-30T02:00:00Z\",\"notBefore\":\"0000-11-30T01:00:00Z\",\"publicKey\":\"313233343536373839306162636564666768696a313233343536373839306162\",\"subnets\":[\"9.1.1.1/ff00ff00\",\"9.1.1.2/24\",\"9.1.1.3/16\"]},\"fingerprint\":\"26cb1c30ad7872c804c166b5150fa372f437aa3856b04edb4334b4470ec728e4\",\"signature\":\"313233343536373839306162636564666768696a313233343536373839306162\"}",
 		string(b),
 	)
 }
@@ -177,7 +223,7 @@ func TestNebulaCertificate_Verify(t *testing.T) {
 
 	v, err := c.Verify(time.Now(), caPool)
 	assert.False(t, v)
-	assert.EqualError(t, err, "certificate has been blocked")
+	assert.EqualError(t, err, "certificate is in the block list")
 
 	caPool.ResetCertBlocklist()
 	v, err = c.Verify(time.Now(), caPool)
@@ -217,6 +263,65 @@ func TestNebulaCertificate_Verify(t *testing.T) {
 	assert.Nil(t, err)
 }
 
+func TestNebulaCertificate_VerifyP256(t *testing.T) {
+	ca, _, caKey, err := newTestCaCertP256(time.Now(), time.Now().Add(10*time.Minute), []*net.IPNet{}, []*net.IPNet{}, []string{})
+	assert.Nil(t, err)
+
+	c, _, _, err := newTestCert(ca, caKey, time.Now(), time.Now().Add(5*time.Minute), []*net.IPNet{}, []*net.IPNet{}, []string{})
+	assert.Nil(t, err)
+
+	h, err := ca.Sha256Sum()
+	assert.Nil(t, err)
+
+	caPool := NewCAPool()
+	caPool.CAs[h] = ca
+
+	f, err := c.Sha256Sum()
+	assert.Nil(t, err)
+	caPool.BlocklistFingerprint(f)
+
+	v, err := c.Verify(time.Now(), caPool)
+	assert.False(t, v)
+	assert.EqualError(t, err, "certificate is in the block list")
+
+	caPool.ResetCertBlocklist()
+	v, err = c.Verify(time.Now(), caPool)
+	assert.True(t, v)
+	assert.Nil(t, err)
+
+	v, err = c.Verify(time.Now().Add(time.Hour*1000), caPool)
+	assert.False(t, v)
+	assert.EqualError(t, err, "root certificate is expired")
+
+	c, _, _, err = newTestCert(ca, caKey, time.Time{}, time.Time{}, []*net.IPNet{}, []*net.IPNet{}, []string{})
+	assert.Nil(t, err)
+	v, err = c.Verify(time.Now().Add(time.Minute*6), caPool)
+	assert.False(t, v)
+	assert.EqualError(t, err, "certificate is expired")
+
+	// Test group assertion
+	ca, _, caKey, err = newTestCaCertP256(time.Now(), time.Now().Add(10*time.Minute), []*net.IPNet{}, []*net.IPNet{}, []string{"test1", "test2"})
+	assert.Nil(t, err)
+
+	caPem, err := ca.MarshalToPEM()
+	assert.Nil(t, err)
+
+	caPool = NewCAPool()
+	caPool.AddCACertificate(caPem)
+
+	c, _, _, err = newTestCert(ca, caKey, time.Now(), time.Now().Add(5*time.Minute), []*net.IPNet{}, []*net.IPNet{}, []string{"test1", "bad"})
+	assert.Nil(t, err)
+	v, err = c.Verify(time.Now(), caPool)
+	assert.False(t, v)
+	assert.EqualError(t, err, "certificate contained a group not present on the signing ca: bad")
+
+	c, _, _, err = newTestCert(ca, caKey, time.Now(), time.Now().Add(5*time.Minute), []*net.IPNet{}, []*net.IPNet{}, []string{"test1"})
+	assert.Nil(t, err)
+	v, err = c.Verify(time.Now(), caPool)
+	assert.True(t, v)
+	assert.Nil(t, err)
+}
+
 func TestNebulaCertificate_Verify_IPs(t *testing.T) {
 	_, caIp1, _ := net.ParseCIDR("10.0.0.0/16")
 	_, caIp2, _ := net.ParseCIDR("192.168.0.0/24")
@@ -378,20 +483,40 @@ func TestNebulaCertificate_Verify_Subnets(t *testing.T) {
 func TestNebulaCertificate_VerifyPrivateKey(t *testing.T) {
 	ca, _, caKey, err := newTestCaCert(time.Time{}, time.Time{}, []*net.IPNet{}, []*net.IPNet{}, []string{})
 	assert.Nil(t, err)
-	err = ca.VerifyPrivateKey(caKey)
+	err = ca.VerifyPrivateKey(Curve_CURVE25519, caKey)
 	assert.Nil(t, err)
 
 	_, _, caKey2, err := newTestCaCert(time.Time{}, time.Time{}, []*net.IPNet{}, []*net.IPNet{}, []string{})
 	assert.Nil(t, err)
-	err = ca.VerifyPrivateKey(caKey2)
+	err = ca.VerifyPrivateKey(Curve_CURVE25519, caKey2)
 	assert.NotNil(t, err)
 
 	c, _, priv, err := newTestCert(ca, caKey, time.Time{}, time.Time{}, []*net.IPNet{}, []*net.IPNet{}, []string{})
-	err = c.VerifyPrivateKey(priv)
+	err = c.VerifyPrivateKey(Curve_CURVE25519, priv)
 	assert.Nil(t, err)
 
 	_, priv2 := x25519Keypair()
-	err = c.VerifyPrivateKey(priv2)
+	err = c.VerifyPrivateKey(Curve_CURVE25519, priv2)
+	assert.NotNil(t, err)
+}
+
+func TestNebulaCertificate_VerifyPrivateKeyP256(t *testing.T) {
+	ca, _, caKey, err := newTestCaCertP256(time.Time{}, time.Time{}, []*net.IPNet{}, []*net.IPNet{}, []string{})
+	assert.Nil(t, err)
+	err = ca.VerifyPrivateKey(Curve_P256, caKey)
+	assert.Nil(t, err)
+
+	_, _, caKey2, err := newTestCaCertP256(time.Time{}, time.Time{}, []*net.IPNet{}, []*net.IPNet{}, []string{})
+	assert.Nil(t, err)
+	err = ca.VerifyPrivateKey(Curve_P256, caKey2)
+	assert.NotNil(t, err)
+
+	c, _, priv, err := newTestCert(ca, caKey, time.Time{}, time.Time{}, []*net.IPNet{}, []*net.IPNet{}, []string{})
+	err = c.VerifyPrivateKey(Curve_P256, priv)
+	assert.Nil(t, err)
+
+	_, priv2 := p256Keypair()
+	err = c.VerifyPrivateKey(Curve_P256, priv2)
 	assert.NotNil(t, err)
 }
 
@@ -438,6 +563,23 @@ CjkKB2V4cGlyZWQouPmWjQYwufmWjQY6ILCRaoCkJlqHgv5jfDN4lzLHBvDzaQm4
 vZxfu144hmgjQAESQG4qlnZi8DncvD/LDZnLgJHOaX1DWCHHEh59epVsC+BNgTie
 WH1M9n4O7cFtGlM6sJJOS+rCVVEJ3ABS7+MPdQs=
 -----END NEBULA CERTIFICATE-----
+`
+
+	p256 := `
+# p256 certificate
+-----BEGIN NEBULA CERTIFICATE-----
+CmYKEG5lYnVsYSBQMjU2IHRlc3Qo4s+7mgYw4tXrsAc6QQRkaW2jFmllYvN4+/k2
+6tctO9sPT3jOx8ES6M1nIqOhpTmZeabF/4rELDqPV4aH5jfJut798DUXql0FlF8H
+76gvQAGgBgESRzBFAiEAib0/te6eMiZOKD8gdDeloMTS0wGuX2t0C7TFdUhAQzgC
+IBNWYMep3ysx9zCgknfG5dKtwGTaqF++BWKDYdyl34KX
+-----END NEBULA CERTIFICATE-----
+`
+
+	v2 := `
+# valid PEM with the V2 header
+-----BEGIN NEBULA CERTIFICATE V2-----
+CmYKEG5lYnVsYSBQMjU2IHRlc3Qo4s+7mgYw4tXrsAc6QQRkaW2jFmllYvN4+/k2
+-----END NEBULA CERTIFICATE V2-----
 `
 
 	rootCA := NebulaCertificate{
@@ -452,28 +594,52 @@ WH1M9n4O7cFtGlM6sJJOS+rCVVEJ3ABS7+MPdQs=
 		},
 	}
 
-	p, err := NewCAPoolFromBytes([]byte(noNewLines))
+	rootCAP256 := NebulaCertificate{
+		Details: NebulaCertificateDetails{
+			Name: "nebula P256 test",
+		},
+	}
+
+	p, warn, err := NewCAPoolFromBytes([]byte(noNewLines))
 	assert.Nil(t, err)
+	assert.Nil(t, warn)
 	assert.Equal(t, p.CAs[string("c9bfaf7ce8e84b2eeda2e27b469f4b9617bde192efd214b68891ecda6ed49522")].Details.Name, rootCA.Details.Name)
 	assert.Equal(t, p.CAs[string("5c9c3f23e7ee7fe97637cbd3a0a5b854154d1d9aaaf7b566a51f4a88f76b64cd")].Details.Name, rootCA01.Details.Name)
 
-	pp, err := NewCAPoolFromBytes([]byte(withNewLines))
+	pp, warn, err := NewCAPoolFromBytes([]byte(withNewLines))
 	assert.Nil(t, err)
+	assert.Nil(t, warn)
 	assert.Equal(t, pp.CAs[string("c9bfaf7ce8e84b2eeda2e27b469f4b9617bde192efd214b68891ecda6ed49522")].Details.Name, rootCA.Details.Name)
 	assert.Equal(t, pp.CAs[string("5c9c3f23e7ee7fe97637cbd3a0a5b854154d1d9aaaf7b566a51f4a88f76b64cd")].Details.Name, rootCA01.Details.Name)
 
 	// expired cert, no valid certs
-	ppp, err := NewCAPoolFromBytes([]byte(expired))
-	assert.Equal(t, ErrExpired, err)
-	assert.Equal(t, ppp.CAs[string("152070be6bb19bc9e3bde4c2f0e7d8f4ff5448b4c9856b8eccb314fade0229b0")].Details.Name, "expired")
+	ppp, warn, err := NewCAPoolFromBytes([]byte(expired))
+	assert.Error(t, err, "no valid CA certificates present")
+	assert.Len(t, warn, 1)
+	assert.Error(t, warn[0], ErrExpired)
+	assert.Nil(t, ppp)
 
 	// expired cert, with valid certs
-	pppp, err := NewCAPoolFromBytes(append([]byte(expired), noNewLines...))
-	assert.Equal(t, ErrExpired, err)
+	pppp, warn, err := NewCAPoolFromBytes(append([]byte(expired), noNewLines...))
+	assert.Len(t, warn, 1)
+	assert.Nil(t, err)
+	assert.Error(t, warn[0], ErrExpired)
 	assert.Equal(t, pppp.CAs[string("c9bfaf7ce8e84b2eeda2e27b469f4b9617bde192efd214b68891ecda6ed49522")].Details.Name, rootCA.Details.Name)
 	assert.Equal(t, pppp.CAs[string("5c9c3f23e7ee7fe97637cbd3a0a5b854154d1d9aaaf7b566a51f4a88f76b64cd")].Details.Name, rootCA01.Details.Name)
 	assert.Equal(t, pppp.CAs[string("152070be6bb19bc9e3bde4c2f0e7d8f4ff5448b4c9856b8eccb314fade0229b0")].Details.Name, "expired")
 	assert.Equal(t, len(pppp.CAs), 3)
+
+	ppppp, warn, err := NewCAPoolFromBytes([]byte(p256))
+	assert.Nil(t, err)
+	assert.Nil(t, warn)
+	assert.Equal(t, ppppp.CAs[string("a7938893ec8c4ef769b06d7f425e5e46f7a7f5ffa49c3bcf4a86b608caba9159")].Details.Name, rootCAP256.Details.Name)
+	assert.Equal(t, len(ppppp.CAs), 1)
+
+	pppppp, warn, err := NewCAPoolFromBytes(append([]byte(p256), []byte(v2)...))
+	assert.Nil(t, err)
+	assert.True(t, errors.Is(warn[0], ErrInvalidPEMCertificateUnsupported))
+	assert.Equal(t, pppppp.CAs[string("a7938893ec8c4ef769b06d7f425e5e46f7a7f5ffa49c3bcf4a86b608caba9159")].Details.Name, rootCAP256.Details.Name)
+	assert.Equal(t, len(pppppp.CAs), 1)
 }
 
 func appendByteSlices(b ...[]byte) []byte {
@@ -529,11 +695,16 @@ bzBEr00kERQxxTzTsH8cpYEgRoipvmExvg8WP8NdAJEYJosB
 	assert.EqualError(t, err, "input did not contain a valid PEM encoded block")
 }
 
-func TestUnmarshalEd25519PrivateKey(t *testing.T) {
+func TestUnmarshalSigningPrivateKey(t *testing.T) {
 	privKey := []byte(`# A good key
 -----BEGIN NEBULA ED25519 PRIVATE KEY-----
 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
 -----END NEBULA ED25519 PRIVATE KEY-----
+`)
+	privP256Key := []byte(`# A good key
+-----BEGIN NEBULA ECDSA P256 PRIVATE KEY-----
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
+-----END NEBULA ECDSA P256 PRIVATE KEY-----
 `)
 	shortKey := []byte(`# A short key
 -----BEGIN NEBULA ED25519 PRIVATE KEY-----
@@ -550,39 +721,139 @@ AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
 -END NEBULA ED25519 PRIVATE KEY-----`)
 
-	keyBundle := appendByteSlices(privKey, shortKey, invalidBanner, invalidPem)
+	keyBundle := appendByteSlices(privKey, privP256Key, shortKey, invalidBanner, invalidPem)
 
 	// Success test case
-	k, rest, err := UnmarshalEd25519PrivateKey(keyBundle)
+	k, rest, curve, err := UnmarshalSigningPrivateKey(keyBundle)
 	assert.Len(t, k, 64)
+	assert.Equal(t, rest, appendByteSlices(privP256Key, shortKey, invalidBanner, invalidPem))
+	assert.Equal(t, Curve_CURVE25519, curve)
+	assert.Nil(t, err)
+
+	// Success test case
+	k, rest, curve, err = UnmarshalSigningPrivateKey(rest)
+	assert.Len(t, k, 32)
 	assert.Equal(t, rest, appendByteSlices(shortKey, invalidBanner, invalidPem))
+	assert.Equal(t, Curve_P256, curve)
 	assert.Nil(t, err)
 
 	// Fail due to short key
-	k, rest, err = UnmarshalEd25519PrivateKey(rest)
+	k, rest, curve, err = UnmarshalSigningPrivateKey(rest)
 	assert.Nil(t, k)
 	assert.Equal(t, rest, appendByteSlices(invalidBanner, invalidPem))
-	assert.EqualError(t, err, "key was not 64 bytes, is invalid ed25519 private key")
+	assert.EqualError(t, err, "key was not 64 bytes, is invalid Ed25519 private key")
 
 	// Fail due to invalid banner
-	k, rest, err = UnmarshalEd25519PrivateKey(rest)
+	k, rest, curve, err = UnmarshalSigningPrivateKey(rest)
 	assert.Nil(t, k)
 	assert.Equal(t, rest, invalidPem)
-	assert.EqualError(t, err, "bytes did not contain a proper nebula Ed25519 private key banner")
+	assert.EqualError(t, err, "bytes did not contain a proper nebula Ed25519/ECDSA private key banner")
 
 	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
-	k, rest, err = UnmarshalEd25519PrivateKey(rest)
+	k, rest, curve, err = UnmarshalSigningPrivateKey(rest)
 	assert.Nil(t, k)
 	assert.Equal(t, rest, invalidPem)
 	assert.EqualError(t, err, "input did not contain a valid PEM encoded block")
 }
 
-func TestUnmarshalX25519PrivateKey(t *testing.T) {
+func TestDecryptAndUnmarshalSigningPrivateKey(t *testing.T) {
+	passphrase := []byte("DO NOT USE THIS KEY")
+	privKey := []byte(`# A good key
+-----BEGIN NEBULA ED25519 ENCRYPTED PRIVATE KEY-----
+CjwKC0FFUy0yNTYtR0NNEi0IExCAgIABGAEgBCognnjujd67Vsv99p22wfAjQaDT
+oCMW1mdjkU3gACKNW4MSXOWR9Sts4C81yk1RUku2gvGKs3TB9LYoklLsIizSYOLl
++Vs//O1T0I1Xbml2XBAROsb/VSoDln/6LMqR4B6fn6B3GOsLBBqRI8daDl9lRMPB
+qrlJ69wer3ZUHFXA
+-----END NEBULA ED25519 ENCRYPTED PRIVATE KEY-----
+`)
+	shortKey := []byte(`# A key which, once decrypted, is too short
+-----BEGIN NEBULA ED25519 ENCRYPTED PRIVATE KEY-----
+CjwKC0FFUy0yNTYtR0NNEi0IExCAgIABGAEgBCoga5h8owMEBWRSMMJKzuUvWce7
+k0qlBkQmCxiuLh80MuASW70YcKt8jeEIS2axo2V6zAKA9TSMcCsJW1kDDXEtL/xe
+GLF5T7sDl5COp4LU3pGxpV+KoeQ/S3gQCAAcnaOtnJQX+aSDnbO3jCHyP7U9CHbs
+rQr3bdH3Oy/WiYU=
+-----END NEBULA ED25519 ENCRYPTED PRIVATE KEY-----
+`)
+	invalidBanner := []byte(`# Invalid banner (not encrypted)
+-----BEGIN NEBULA ED25519 PRIVATE KEY-----
+bWRp2CTVFhW9HD/qCd28ltDgK3w8VXSeaEYczDWos8sMUBqDb9jP3+NYwcS4lURG
+XgLvodMXZJuaFPssp+WwtA==
+-----END NEBULA ED25519 PRIVATE KEY-----
+`)
+	invalidPem := []byte(`# Not a valid PEM format
+-BEGIN NEBULA ED25519 ENCRYPTED PRIVATE KEY-----
+CjwKC0FFUy0yNTYtR0NNEi0IExCAgIABGAEgBCognnjujd67Vsv99p22wfAjQaDT
+oCMW1mdjkU3gACKNW4MSXOWR9Sts4C81yk1RUku2gvGKs3TB9LYoklLsIizSYOLl
++Vs//O1T0I1Xbml2XBAROsb/VSoDln/6LMqR4B6fn6B3GOsLBBqRI8daDl9lRMPB
+qrlJ69wer3ZUHFXA
+-END NEBULA ED25519 ENCRYPTED PRIVATE KEY-----
+`)
+
+	keyBundle := appendByteSlices(privKey, shortKey, invalidBanner, invalidPem)
+
+	// Success test case
+	curve, k, rest, err := DecryptAndUnmarshalSigningPrivateKey(passphrase, keyBundle)
+	assert.Nil(t, err)
+	assert.Equal(t, Curve_CURVE25519, curve)
+	assert.Len(t, k, 64)
+	assert.Equal(t, rest, appendByteSlices(shortKey, invalidBanner, invalidPem))
+
+	// Fail due to short key
+	curve, k, rest, err = DecryptAndUnmarshalSigningPrivateKey(passphrase, rest)
+	assert.EqualError(t, err, "key was not 64 bytes, is invalid ed25519 private key")
+	assert.Nil(t, k)
+	assert.Equal(t, rest, appendByteSlices(invalidBanner, invalidPem))
+
+	// Fail due to invalid banner
+	curve, k, rest, err = DecryptAndUnmarshalSigningPrivateKey(passphrase, rest)
+	assert.EqualError(t, err, "bytes did not contain a proper nebula encrypted Ed25519/ECDSA private key banner")
+	assert.Nil(t, k)
+	assert.Equal(t, rest, invalidPem)
+
+	// Fail due to ivalid PEM format, because
+	// it's missing the requisite pre-encapsulation boundary.
+	curve, k, rest, err = DecryptAndUnmarshalSigningPrivateKey(passphrase, rest)
+	assert.EqualError(t, err, "input did not contain a valid PEM encoded block")
+	assert.Nil(t, k)
+	assert.Equal(t, rest, invalidPem)
+
+	// Fail due to invalid passphrase
+	curve, k, rest, err = DecryptAndUnmarshalSigningPrivateKey([]byte("invalid passphrase"), privKey)
+	assert.EqualError(t, err, "invalid passphrase or corrupt private key")
+	assert.Nil(t, k)
+	assert.Equal(t, rest, []byte{})
+}
+
+func TestEncryptAndMarshalSigningPrivateKey(t *testing.T) {
+	// Having proved that decryption works correctly above, we can test the
+	// encryption function produces a value which can be decrypted
+	passphrase := []byte("passphrase")
+	bytes := []byte("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA")
+	kdfParams := NewArgon2Parameters(64*1024, 4, 3)
+	key, err := EncryptAndMarshalSigningPrivateKey(Curve_CURVE25519, bytes, passphrase, kdfParams)
+	assert.Nil(t, err)
+
+	// Verify the "key" can be decrypted successfully
+	curve, k, rest, err := DecryptAndUnmarshalSigningPrivateKey(passphrase, key)
+	assert.Len(t, k, 64)
+	assert.Equal(t, Curve_CURVE25519, curve)
+	assert.Equal(t, rest, []byte{})
+	assert.Nil(t, err)
+
+	// EncryptAndMarshalEd25519PrivateKey does not create any errors itself
+}
+
+func TestUnmarshalPrivateKey(t *testing.T) {
 	privKey := []byte(`# A good key
 -----BEGIN NEBULA X25519 PRIVATE KEY-----
 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 -----END NEBULA X25519 PRIVATE KEY-----
+`)
+	privP256Key := []byte(`# A good key
+-----BEGIN NEBULA P256 PRIVATE KEY-----
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
+-----END NEBULA P256 PRIVATE KEY-----
 `)
 	shortKey := []byte(`# A short key
 -----BEGIN NEBULA X25519 PRIVATE KEY-----
@@ -599,29 +870,37 @@ AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 -END NEBULA X25519 PRIVATE KEY-----`)
 
-	keyBundle := appendByteSlices(privKey, shortKey, invalidBanner, invalidPem)
+	keyBundle := appendByteSlices(privKey, privP256Key, shortKey, invalidBanner, invalidPem)
 
 	// Success test case
-	k, rest, err := UnmarshalX25519PrivateKey(keyBundle)
+	k, rest, curve, err := UnmarshalPrivateKey(keyBundle)
+	assert.Len(t, k, 32)
+	assert.Equal(t, rest, appendByteSlices(privP256Key, shortKey, invalidBanner, invalidPem))
+	assert.Equal(t, Curve_CURVE25519, curve)
+	assert.Nil(t, err)
+
+	// Success test case
+	k, rest, curve, err = UnmarshalPrivateKey(rest)
 	assert.Len(t, k, 32)
 	assert.Equal(t, rest, appendByteSlices(shortKey, invalidBanner, invalidPem))
+	assert.Equal(t, Curve_P256, curve)
 	assert.Nil(t, err)
 
 	// Fail due to short key
-	k, rest, err = UnmarshalX25519PrivateKey(rest)
+	k, rest, curve, err = UnmarshalPrivateKey(rest)
 	assert.Nil(t, k)
 	assert.Equal(t, rest, appendByteSlices(invalidBanner, invalidPem))
-	assert.EqualError(t, err, "key was not 32 bytes, is invalid X25519 private key")
+	assert.EqualError(t, err, "key was not 32 bytes, is invalid CURVE25519 private key")
 
 	// Fail due to invalid banner
-	k, rest, err = UnmarshalX25519PrivateKey(rest)
+	k, rest, curve, err = UnmarshalPrivateKey(rest)
 	assert.Nil(t, k)
 	assert.Equal(t, rest, invalidPem)
-	assert.EqualError(t, err, "bytes did not contain a proper nebula X25519 private key banner")
+	assert.EqualError(t, err, "bytes did not contain a proper nebula private key banner")
 
 	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
-	k, rest, err = UnmarshalX25519PrivateKey(rest)
+	k, rest, curve, err = UnmarshalPrivateKey(rest)
 	assert.Nil(t, k)
 	assert.Equal(t, rest, invalidPem)
 	assert.EqualError(t, err, "input did not contain a valid PEM encoded block")
@@ -681,6 +960,12 @@ func TestUnmarshalX25519PublicKey(t *testing.T) {
 -----BEGIN NEBULA X25519 PUBLIC KEY-----
 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 -----END NEBULA X25519 PUBLIC KEY-----
+`)
+	pubP256Key := []byte(`# A good key
+-----BEGIN NEBULA P256 PUBLIC KEY-----
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAA=
+-----END NEBULA P256 PUBLIC KEY-----
 `)
 	shortKey := []byte(`# A short key
 -----BEGIN NEBULA X25519 PUBLIC KEY-----
@@ -697,29 +982,37 @@ AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
 -END NEBULA X25519 PUBLIC KEY-----`)
 
-	keyBundle := appendByteSlices(pubKey, shortKey, invalidBanner, invalidPem)
+	keyBundle := appendByteSlices(pubKey, pubP256Key, shortKey, invalidBanner, invalidPem)
 
 	// Success test case
-	k, rest, err := UnmarshalX25519PublicKey(keyBundle)
+	k, rest, curve, err := UnmarshalPublicKey(keyBundle)
 	assert.Equal(t, len(k), 32)
 	assert.Nil(t, err)
+	assert.Equal(t, rest, appendByteSlices(pubP256Key, shortKey, invalidBanner, invalidPem))
+	assert.Equal(t, Curve_CURVE25519, curve)
+
+	// Success test case
+	k, rest, curve, err = UnmarshalPublicKey(rest)
+	assert.Equal(t, len(k), 65)
+	assert.Nil(t, err)
 	assert.Equal(t, rest, appendByteSlices(shortKey, invalidBanner, invalidPem))
+	assert.Equal(t, Curve_P256, curve)
 
 	// Fail due to short key
-	k, rest, err = UnmarshalX25519PublicKey(rest)
+	k, rest, curve, err = UnmarshalPublicKey(rest)
 	assert.Nil(t, k)
 	assert.Equal(t, rest, appendByteSlices(invalidBanner, invalidPem))
-	assert.EqualError(t, err, "key was not 32 bytes, is invalid X25519 public key")
+	assert.EqualError(t, err, "key was not 32 bytes, is invalid CURVE25519 public key")
 
 	// Fail due to invalid banner
-	k, rest, err = UnmarshalX25519PublicKey(rest)
+	k, rest, curve, err = UnmarshalPublicKey(rest)
 	assert.Nil(t, k)
-	assert.EqualError(t, err, "bytes did not contain a proper nebula X25519 public key banner")
+	assert.EqualError(t, err, "bytes did not contain a proper nebula public key banner")
 	assert.Equal(t, rest, invalidPem)
 
 	// Fail due to ivalid PEM format, because
 	// it's missing the requisite pre-encapsulation boundary.
-	k, rest, err = UnmarshalX25519PublicKey(rest)
+	k, rest, curve, err = UnmarshalPublicKey(rest)
 	assert.Nil(t, k)
 	assert.Equal(t, rest, invalidPem)
 	assert.EqualError(t, err, "input did not contain a valid PEM encoded block")
@@ -816,13 +1109,56 @@ func newTestCaCert(before, after time.Time, ips, subnets []*net.IPNet, groups []
 		nc.Details.Groups = groups
 	}
 
-	err = nc.Sign(priv)
+	err = nc.Sign(Curve_CURVE25519, priv)
 	if err != nil {
 		return nil, nil, nil, err
 	}
 	return nc, pub, priv, nil
 }
 
+func newTestCaCertP256(before, after time.Time, ips, subnets []*net.IPNet, groups []string) (*NebulaCertificate, []byte, []byte, error) {
+	priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	pub := elliptic.Marshal(elliptic.P256(), priv.PublicKey.X, priv.PublicKey.Y)
+	rawPriv := priv.D.FillBytes(make([]byte, 32))
+
+	if before.IsZero() {
+		before = time.Now().Add(time.Second * -60).Round(time.Second)
+	}
+	if after.IsZero() {
+		after = time.Now().Add(time.Second * 60).Round(time.Second)
+	}
+
+	nc := &NebulaCertificate{
+		Details: NebulaCertificateDetails{
+			Name:           "test ca",
+			NotBefore:      time.Unix(before.Unix(), 0),
+			NotAfter:       time.Unix(after.Unix(), 0),
+			PublicKey:      pub,
+			IsCA:           true,
+			Curve:          Curve_P256,
+			InvertedGroups: make(map[string]struct{}),
+		},
+	}
+
+	if len(ips) > 0 {
+		nc.Details.Ips = ips
+	}
+
+	if len(subnets) > 0 {
+		nc.Details.Subnets = subnets
+	}
+
+	if len(groups) > 0 {
+		nc.Details.Groups = groups
+	}
+
+	err = nc.Sign(Curve_P256, rawPriv)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	return nc, pub, rawPriv, nil
+}
+
 func newTestCert(ca *NebulaCertificate, key []byte, before, after time.Time, ips, subnets []*net.IPNet, groups []string) (*NebulaCertificate, []byte, []byte, error) {
 	issuer, err := ca.Sha256Sum()
 	if err != nil {
@@ -856,7 +1192,16 @@ func newTestCert(ca *NebulaCertificate, key []byte, before, after time.Time, ips
 		}
 	}
 
-	pub, rawPriv := x25519Keypair()
+	var pub, rawPriv []byte
+
+	switch ca.Details.Curve {
+	case Curve_CURVE25519:
+		pub, rawPriv = x25519Keypair()
+	case Curve_P256:
+		pub, rawPriv = p256Keypair()
+	default:
+		return nil, nil, nil, fmt.Errorf("unknown curve: %v", ca.Details.Curve)
+	}
 
 	nc := &NebulaCertificate{
 		Details: NebulaCertificateDetails{
@@ -868,12 +1213,13 @@ func newTestCert(ca *NebulaCertificate, key []byte, before, after time.Time, ips
 			NotAfter:       time.Unix(after.Unix(), 0),
 			PublicKey:      pub,
 			IsCA:           false,
+			Curve:          ca.Details.Curve,
 			Issuer:         issuer,
 			InvertedGroups: make(map[string]struct{}),
 		},
 	}
 
-	err = nc.Sign(key)
+	err = nc.Sign(ca.Details.Curve, key)
 	if err != nil {
 		return nil, nil, nil, err
 	}
@@ -894,3 +1240,12 @@ func x25519Keypair() ([]byte, []byte) {
 
 	return pubkey, privkey
 }
+
+func p256Keypair() ([]byte, []byte) {
+	privkey, err := ecdh.P256().GenerateKey(rand.Reader)
+	if err != nil {
+		panic(err)
+	}
+	pubkey := privkey.PublicKey()
+	return pubkey.Bytes(), privkey.Bytes()
+}

cert/crypto.go

@@ -0,0 +1,143 @@
+package cert
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"fmt"
+	"io"
+
+	"golang.org/x/crypto/argon2"
+)
+
+// KDF factors
+type Argon2Parameters struct {
+	version     rune
+	Memory      uint32 // KiB
+	Parallelism uint8
+	Iterations  uint32
+	salt        []byte
+}
+
+// Returns a new Argon2Parameters object with current version set
+func NewArgon2Parameters(memory uint32, parallelism uint8, iterations uint32) *Argon2Parameters {
+	return &Argon2Parameters{
+		version:     argon2.Version,
+		Memory:      memory, // KiB
+		Parallelism: parallelism,
+		Iterations:  iterations,
+	}
+}
+
+// Encrypts data using AES-256-GCM and the Argon2id key derivation function
+func aes256Encrypt(passphrase []byte, kdfParams *Argon2Parameters, data []byte) ([]byte, error) {
+	key, err := aes256DeriveKey(passphrase, kdfParams)
+	if err != nil {
+		return nil, err
+	}
+
+	// this should never happen, but since this dictates how our calls into the
+	// aes package behave and could be catastraphic, let's sanity check this
+	if len(key) != 32 {
+		return nil, fmt.Errorf("invalid AES-256 key length (%d) - cowardly refusing to encrypt", len(key))
+	}
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, err
+	}
+
+	nonce := make([]byte, gcm.NonceSize())
+	if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
+		return nil, err
+	}
+
+	ciphertext := gcm.Seal(nil, nonce, data, nil)
+	blob := joinNonceCiphertext(nonce, ciphertext)
+
+	return blob, nil
+}
+
+// Decrypts data using AES-256-GCM and the Argon2id key derivation function
+// Expects the data to include an Argon2id parameter string before the encrypted data
+func aes256Decrypt(passphrase []byte, kdfParams *Argon2Parameters, data []byte) ([]byte, error) {
+	key, err := aes256DeriveKey(passphrase, kdfParams)
+	if err != nil {
+		return nil, err
+	}
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, err
+	}
+
+	nonce, ciphertext, err := splitNonceCiphertext(data, gcm.NonceSize())
+	if err != nil {
+		return nil, err
+	}
+
+	plaintext, err := gcm.Open(nil, nonce, ciphertext, nil)
+	if err != nil {
+		return nil, fmt.Errorf("invalid passphrase or corrupt private key")
+	}
+
+	return plaintext, nil
+}
+
+func aes256DeriveKey(passphrase []byte, params *Argon2Parameters) ([]byte, error) {
+	if params.salt == nil {
+		params.salt = make([]byte, 32)
+		if _, err := rand.Read(params.salt); err != nil {
+			return nil, err
+		}
+	}
+
+	// keySize of 32 bytes will result in AES-256 encryption
+	key, err := deriveKey(passphrase, 32, params)
+	if err != nil {
+		return nil, err
+	}
+
+	return key, nil
+}
+
+// Derives a key from a passphrase using Argon2id
+func deriveKey(passphrase []byte, keySize uint32, params *Argon2Parameters) ([]byte, error) {
+	if params.version != argon2.Version {
+		return nil, fmt.Errorf("incompatible Argon2 version: %d", params.version)
+	}
+
+	if params.salt == nil {
+		return nil, fmt.Errorf("salt must be set in argon2Parameters")
+	} else if len(params.salt) < 16 {
+		return nil, fmt.Errorf("salt must be at least 128  bits")
+	}
+
+	key := argon2.IDKey(passphrase, params.salt, params.Iterations, params.Memory, params.Parallelism, keySize)
+
+	return key, nil
+}
+
+// Prepends nonce to ciphertext
+func joinNonceCiphertext(nonce []byte, ciphertext []byte) []byte {
+	return append(nonce, ciphertext...)
+}
+
+// Splits nonce from ciphertext
+func splitNonceCiphertext(blob []byte, nonceSize int) ([]byte, []byte, error) {
+	if len(blob) <= nonceSize {
+		return nil, nil, fmt.Errorf("invalid ciphertext blob - blob shorter than nonce length")
+	}
+
+	return blob[:nonceSize], blob[nonceSize:], nil
+}

cert/crypto_test.go

@@ -0,0 +1,25 @@
+package cert
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"golang.org/x/crypto/argon2"
+)
+
+func TestNewArgon2Parameters(t *testing.T) {
+	p := NewArgon2Parameters(64*1024, 4, 3)
+	assert.EqualValues(t, &Argon2Parameters{
+		version:     argon2.Version,
+		Memory:      64 * 1024,
+		Parallelism: 4,
+		Iterations:  3,
+	}, p)
+	p = NewArgon2Parameters(2*1024*1024, 2, 1)
+	assert.EqualValues(t, &Argon2Parameters{
+		version:     argon2.Version,
+		Memory:      2 * 1024 * 1024,
+		Parallelism: 2,
+		Iterations:  1,
+	}, p)
+}

cert/errors.go

@@ -1,9 +1,15 @@
 package cert
 
-import "errors"
+import (
+	"errors"
+)
 
 var (
-	ErrExpired       = errors.New("certificate is expired")
-	ErrNotCA         = errors.New("certificate is not a CA")
-	ErrNotSelfSigned = errors.New("certificate is not self-signed")
+	ErrRootExpired                      = errors.New("root certificate is expired")
+	ErrExpired                          = errors.New("certificate is expired")
+	ErrNotCA                            = errors.New("certificate is not a CA")
+	ErrNotSelfSigned                    = errors.New("certificate is not self-signed")
+	ErrBlockListed                      = errors.New("certificate is in the block list")
+	ErrSignatureMismatch                = errors.New("certificate signature did not match")
+	ErrInvalidPEMCertificateUnsupported = errors.New("bytes contain an unsupported certificate format")
 )

cidr/parse.go

@@ -1,10 +0,0 @@
-package cidr
-
-import "net"
-
-// Parse is a convenience function that returns only the IPNet
-// This function ignores errors since it is primarily a test helper, the result could be nil
-func Parse(s string) *net.IPNet {
-	_, c, _ := net.ParseCIDR(s)
-	return c
-}

cidr/tree4.go

@@ -1,145 +0,0 @@
-package cidr
-
-import (
-	"net"
-
-	"github.com/slackhq/nebula/iputil"
-)
-
-type Node struct {
-	left   *Node
-	right  *Node
-	parent *Node
-	value  interface{}
-}
-
-type Tree4 struct {
-	root *Node
-}
-
-const (
-	startbit = iputil.VpnIp(0x80000000)
-)
-
-func NewTree4() *Tree4 {
-	tree := new(Tree4)
-	tree.root = &Node{}
-	return tree
-}
-
-func (tree *Tree4) AddCIDR(cidr *net.IPNet, val interface{}) {
-	bit := startbit
-	node := tree.root
-	next := tree.root
-
-	ip := iputil.Ip2VpnIp(cidr.IP)
-	mask := iputil.Ip2VpnIp(cidr.Mask)
-
-	// Find our last ancestor in the tree
-	for bit&mask != 0 {
-		if ip&bit != 0 {
-			next = node.right
-		} else {
-			next = node.left
-		}
-
-		if next == nil {
-			break
-		}
-
-		bit = bit >> 1
-		node = next
-	}
-
-	// We already have this range so update the value
-	if next != nil {
-		node.value = val
-		return
-	}
-
-	// Build up the rest of the tree we don't already have
-	for bit&mask != 0 {
-		next = &Node{}
-		next.parent = node
-
-		if ip&bit != 0 {
-			node.right = next
-		} else {
-			node.left = next
-		}
-
-		bit >>= 1
-		node = next
-	}
-
-	// Final node marks our cidr, set the value
-	node.value = val
-}
-
-// Finds the first match, which may be the least specific
-func (tree *Tree4) Contains(ip iputil.VpnIp) (value interface{}) {
-	bit := startbit
-	node := tree.root
-
-	for node != nil {
-		if node.value != nil {
-			return node.value
-		}
-
-		if ip&bit != 0 {
-			node = node.right
-		} else {
-			node = node.left
-		}
-
-		bit >>= 1
-
-	}
-
-	return value
-}
-
-// Finds the most specific match
-func (tree *Tree4) MostSpecificContains(ip iputil.VpnIp) (value interface{}) {
-	bit := startbit
-	node := tree.root
-
-	for node != nil {
-		if node.value != nil {
-			value = node.value
-		}
-
-		if ip&bit != 0 {
-			node = node.right
-		} else {
-			node = node.left
-		}
-
-		bit >>= 1
-	}
-
-	return value
-}
-
-// Finds the most specific match
-func (tree *Tree4) Match(ip iputil.VpnIp) (value interface{}) {
-	bit := startbit
-	node := tree.root
-	lastNode := node
-
-	for node != nil {
-		lastNode = node
-		if ip&bit != 0 {
-			node = node.right
-		} else {
-			node = node.left
-		}
-
-		bit >>= 1
-	}
-
-	if bit == 0 && lastNode != nil {
-		value = lastNode.value
-	}
-	return value
-}

cidr/tree4_test.go

@@ -1,153 +0,0 @@
-package cidr
-
-import (
-	"net"
-	"testing"
-
-	"github.com/slackhq/nebula/iputil"
-	"github.com/stretchr/testify/assert"
-)
-
-func TestCIDRTree_Contains(t *testing.T) {
-	tree := NewTree4()
-	tree.AddCIDR(Parse("1.0.0.0/8"), "1")
-	tree.AddCIDR(Parse("2.1.0.0/16"), "2")
-	tree.AddCIDR(Parse("3.1.1.0/24"), "3")
-	tree.AddCIDR(Parse("4.1.1.0/24"), "4a")
-	tree.AddCIDR(Parse("4.1.1.1/32"), "4b")
-	tree.AddCIDR(Parse("4.1.2.1/32"), "4c")
-	tree.AddCIDR(Parse("254.0.0.0/4"), "5")
-
-	tests := []struct {
-		Result interface{}
-		IP     string
-	}{
-		{"1", "1.0.0.0"},
-		{"1", "1.255.255.255"},
-		{"2", "2.1.0.0"},
-		{"2", "2.1.255.255"},
-		{"3", "3.1.1.0"},
-		{"3", "3.1.1.255"},
-		{"4a", "4.1.1.255"},
-		{"4a", "4.1.1.1"},
-		{"5", "240.0.0.0"},
-		{"5", "255.255.255.255"},
-		{nil, "239.0.0.0"},
-		{nil, "4.1.2.2"},
-	}
-
-	for _, tt := range tests {
-		assert.Equal(t, tt.Result, tree.Contains(iputil.Ip2VpnIp(net.ParseIP(tt.IP))))
-	}
-
-	tree = NewTree4()
-	tree.AddCIDR(Parse("1.1.1.1/0"), "cool")
-	assert.Equal(t, "cool", tree.Contains(iputil.Ip2VpnIp(net.ParseIP("0.0.0.0"))))
-	assert.Equal(t, "cool", tree.Contains(iputil.Ip2VpnIp(net.ParseIP("255.255.255.255"))))
-}
-
-func TestCIDRTree_MostSpecificContains(t *testing.T) {
-	tree := NewTree4()
-	tree.AddCIDR(Parse("1.0.0.0/8"), "1")
-	tree.AddCIDR(Parse("2.1.0.0/16"), "2")
-	tree.AddCIDR(Parse("3.1.1.0/24"), "3")
-	tree.AddCIDR(Parse("4.1.1.0/24"), "4a")
-	tree.AddCIDR(Parse("4.1.1.0/30"), "4b")
-	tree.AddCIDR(Parse("4.1.1.1/32"), "4c")
-	tree.AddCIDR(Parse("254.0.0.0/4"), "5")
-
-	tests := []struct {
-		Result interface{}
-		IP     string
-	}{
-		{"1", "1.0.0.0"},
-		{"1", "1.255.255.255"},
-		{"2", "2.1.0.0"},
-		{"2", "2.1.255.255"},
-		{"3", "3.1.1.0"},
-		{"3", "3.1.1.255"},
-		{"4a", "4.1.1.255"},
-		{"4b", "4.1.1.2"},
-		{"4c", "4.1.1.1"},
-		{"5", "240.0.0.0"},
-		{"5", "255.255.255.255"},
-		{nil, "239.0.0.0"},
-		{nil, "4.1.2.2"},
-	}
-
-	for _, tt := range tests {
-		assert.Equal(t, tt.Result, tree.MostSpecificContains(iputil.Ip2VpnIp(net.ParseIP(tt.IP))))
-	}
-
-	tree = NewTree4()
-	tree.AddCIDR(Parse("1.1.1.1/0"), "cool")
-	assert.Equal(t, "cool", tree.MostSpecificContains(iputil.Ip2VpnIp(net.ParseIP("0.0.0.0"))))
-	assert.Equal(t, "cool", tree.MostSpecificContains(iputil.Ip2VpnIp(net.ParseIP("255.255.255.255"))))
-}
-
-func TestCIDRTree_Match(t *testing.T) {
-	tree := NewTree4()
-	tree.AddCIDR(Parse("4.1.1.0/32"), "1a")
-	tree.AddCIDR(Parse("4.1.1.1/32"), "1b")
-
-	tests := []struct {
-		Result interface{}
-		IP     string
-	}{
-		{"1a", "4.1.1.0"},
-		{"1b", "4.1.1.1"},
-	}
-
-	for _, tt := range tests {
-		assert.Equal(t, tt.Result, tree.Match(iputil.Ip2VpnIp(net.ParseIP(tt.IP))))
-	}
-
-	tree = NewTree4()
-	tree.AddCIDR(Parse("1.1.1.1/0"), "cool")
-	assert.Equal(t, "cool", tree.Contains(iputil.Ip2VpnIp(net.ParseIP("0.0.0.0"))))
-	assert.Equal(t, "cool", tree.Contains(iputil.Ip2VpnIp(net.ParseIP("255.255.255.255"))))
-}
-
-func BenchmarkCIDRTree_Contains(b *testing.B) {
-	tree := NewTree4()
-	tree.AddCIDR(Parse("1.1.0.0/16"), "1")
-	tree.AddCIDR(Parse("1.2.1.1/32"), "1")
-	tree.AddCIDR(Parse("192.2.1.1/32"), "1")
-	tree.AddCIDR(Parse("172.2.1.1/32"), "1")
-
-	ip := iputil.Ip2VpnIp(net.ParseIP("1.2.1.1"))
-	b.Run("found", func(b *testing.B) {
-		for i := 0; i < b.N; i++ {
-			tree.Contains(ip)
-		}
-	})
-
-	ip = iputil.Ip2VpnIp(net.ParseIP("1.2.1.255"))
-	b.Run("not found", func(b *testing.B) {
-		for i := 0; i < b.N; i++ {
-			tree.Contains(ip)
-		}
-	})
-}
-
-func BenchmarkCIDRTree_Match(b *testing.B) {
-	tree := NewTree4()
-	tree.AddCIDR(Parse("1.1.0.0/16"), "1")
-	tree.AddCIDR(Parse("1.2.1.1/32"), "1")
-	tree.AddCIDR(Parse("192.2.1.1/32"), "1")
-	tree.AddCIDR(Parse("172.2.1.1/32"), "1")
-
-	ip := iputil.Ip2VpnIp(net.ParseIP("1.2.1.1"))
-	b.Run("found", func(b *testing.B) {
-		for i := 0; i < b.N; i++ {
-			tree.Match(ip)
-		}
-	})
-
-	ip = iputil.Ip2VpnIp(net.ParseIP("1.2.1.255"))
-	b.Run("not found", func(b *testing.B) {
-		for i := 0; i < b.N; i++ {
-			tree.Match(ip)
-		}
-	})
-}

cidr/tree6.go

@@ -1,185 +0,0 @@
-package cidr
-
-import (
-	"net"
-
-	"github.com/slackhq/nebula/iputil"
-)
-
-const startbit6 = uint64(1 << 63)
-
-type Tree6 struct {
-	root4 *Node
-	root6 *Node
-}
-
-func NewTree6() *Tree6 {
-	tree := new(Tree6)
-	tree.root4 = &Node{}
-	tree.root6 = &Node{}
-	return tree
-}
-
-func (tree *Tree6) AddCIDR(cidr *net.IPNet, val interface{}) {
-	var node, next *Node
-
-	cidrIP, ipv4 := isIPV4(cidr.IP)
-	if ipv4 {
-		node = tree.root4
-		next = tree.root4
-
-	} else {
-		node = tree.root6
-		next = tree.root6
-	}
-
-	for i := 0; i < len(cidrIP); i += 4 {
-		ip := iputil.Ip2VpnIp(cidrIP[i : i+4])
-		mask := iputil.Ip2VpnIp(cidr.Mask[i : i+4])
-		bit := startbit
-
-		// Find our last ancestor in the tree
-		for bit&mask != 0 {
-			if ip&bit != 0 {
-				next = node.right
-			} else {
-				next = node.left
-			}
-
-			if next == nil {
-				break
-			}
-
-			bit = bit >> 1
-			node = next
-		}
-
-		// Build up the rest of the tree we don't already have
-		for bit&mask != 0 {
-			next = &Node{}
-			next.parent = node
-
-			if ip&bit != 0 {
-				node.right = next
-			} else {
-				node.left = next
-			}
-
-			bit >>= 1
-			node = next
-		}
-	}
-
-	// Final node marks our cidr, set the value
-	node.value = val
-}
-
-// Finds the most specific match
-func (tree *Tree6) MostSpecificContains(ip net.IP) (value interface{}) {
-	var node *Node
-
-	wholeIP, ipv4 := isIPV4(ip)
-	if ipv4 {
-		node = tree.root4
-	} else {
-		node = tree.root6
-	}
-
-	for i := 0; i < len(wholeIP); i += 4 {
-		ip := iputil.Ip2VpnIp(wholeIP[i : i+4])
-		bit := startbit
-
-		for node != nil {
-			if node.value != nil {
-				value = node.value
-			}
-
-			if bit == 0 {
-				break
-			}
-
-			if ip&bit != 0 {
-				node = node.right
-			} else {
-				node = node.left
-			}
-
-			bit >>= 1
-		}
-	}
-
-	return value
-}
-
-func (tree *Tree6) MostSpecificContainsIpV4(ip iputil.VpnIp) (value interface{}) {
-	bit := startbit
-	node := tree.root4
-
-	for node != nil {
-		if node.value != nil {
-			value = node.value
-		}
-
-		if ip&bit != 0 {
-			node = node.right
-		} else {
-			node = node.left
-		}
-
-		bit >>= 1
-	}
-
-	return value
-}
-
-func (tree *Tree6) MostSpecificContainsIpV6(hi, lo uint64) (value interface{}) {
-	ip := hi
-	node := tree.root6
-
-	for i := 0; i < 2; i++ {
-		bit := startbit6
-
-		for node != nil {
-			if node.value != nil {
-				value = node.value
-			}
-
-			if bit == 0 {
-				break
-			}
-
-			if ip&bit != 0 {
-				node = node.right
-			} else {
-				node = node.left
-			}
-
-			bit >>= 1
-		}
-
-		ip = lo
-	}
-
-	return value
-}
-
-func isIPV4(ip net.IP) (net.IP, bool) {
-	if len(ip) == net.IPv4len {
-		return ip, true
-	}
-
-	if len(ip) == net.IPv6len && isZeros(ip[0:10]) && ip[10] == 0xff && ip[11] == 0xff {
-		return ip[12:16], true
-	}
-
-	return ip, false
-}
-
-func isZeros(p net.IP) bool {
-	for i := 0; i < len(p); i++ {
-		if p[i] != 0 {
-			return false
-		}
-	}
-	return true
-}

cidr/tree6_test.go

@@ -1,81 +0,0 @@
-package cidr
-
-import (
-	"encoding/binary"
-	"net"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestCIDR6Tree_MostSpecificContains(t *testing.T) {
-	tree := NewTree6()
-	tree.AddCIDR(Parse("1.0.0.0/8"), "1")
-	tree.AddCIDR(Parse("2.1.0.0/16"), "2")
-	tree.AddCIDR(Parse("3.1.1.0/24"), "3")
-	tree.AddCIDR(Parse("4.1.1.1/24"), "4a")
-	tree.AddCIDR(Parse("4.1.1.1/30"), "4b")
-	tree.AddCIDR(Parse("4.1.1.1/32"), "4c")
-	tree.AddCIDR(Parse("254.0.0.0/4"), "5")
-	tree.AddCIDR(Parse("1:2:0:4:5:0:0:0/64"), "6a")
-	tree.AddCIDR(Parse("1:2:0:4:5:0:0:0/80"), "6b")
-	tree.AddCIDR(Parse("1:2:0:4:5:0:0:0/96"), "6c")
-
-	tests := []struct {
-		Result interface{}
-		IP     string
-	}{
-		{"1", "1.0.0.0"},
-		{"1", "1.255.255.255"},
-		{"2", "2.1.0.0"},
-		{"2", "2.1.255.255"},
-		{"3", "3.1.1.0"},
-		{"3", "3.1.1.255"},
-		{"4a", "4.1.1.255"},
-		{"4b", "4.1.1.2"},
-		{"4c", "4.1.1.1"},
-		{"5", "240.0.0.0"},
-		{"5", "255.255.255.255"},
-		{"6a", "1:2:0:4:1:1:1:1"},
-		{"6b", "1:2:0:4:5:1:1:1"},
-		{"6c", "1:2:0:4:5:0:0:0"},
-		{nil, "239.0.0.0"},
-		{nil, "4.1.2.2"},
-	}
-
-	for _, tt := range tests {
-		assert.Equal(t, tt.Result, tree.MostSpecificContains(net.ParseIP(tt.IP)))
-	}
-
-	tree = NewTree6()
-	tree.AddCIDR(Parse("1.1.1.1/0"), "cool")
-	tree.AddCIDR(Parse("::/0"), "cool6")
-	assert.Equal(t, "cool", tree.MostSpecificContains(net.ParseIP("0.0.0.0")))
-	assert.Equal(t, "cool", tree.MostSpecificContains(net.ParseIP("255.255.255.255")))
-	assert.Equal(t, "cool6", tree.MostSpecificContains(net.ParseIP("::")))
-	assert.Equal(t, "cool6", tree.MostSpecificContains(net.ParseIP("1:2:3:4:5:6:7:8")))
-}
-
-func TestCIDR6Tree_MostSpecificContainsIpV6(t *testing.T) {
-	tree := NewTree6()
-	tree.AddCIDR(Parse("1:2:0:4:5:0:0:0/64"), "6a")
-	tree.AddCIDR(Parse("1:2:0:4:5:0:0:0/80"), "6b")
-	tree.AddCIDR(Parse("1:2:0:4:5:0:0:0/96"), "6c")
-
-	tests := []struct {
-		Result interface{}
-		IP     string
-	}{
-		{"6a", "1:2:0:4:1:1:1:1"},
-		{"6b", "1:2:0:4:5:1:1:1"},
-		{"6c", "1:2:0:4:5:0:0:0"},
-	}
-
-	for _, tt := range tests {
-		ip := net.ParseIP(tt.IP)
-		hi := binary.BigEndian.Uint64(ip[:8])
-		lo := binary.BigEndian.Uint64(ip[8:])
-
-		assert.Equal(t, tt.Result, tree.MostSpecificContainsIpV6(hi, lo))
-	}
-}

cmd/nebula-cert/ca.go

@@ -1,11 +1,13 @@
 package main
 
 import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
 	"crypto/rand"
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
+	"math"
 	"net"
 	"os"
 	"strings"
@@ -17,15 +19,21 @@ import (
 )
 
 type caFlags struct {
-	set         *flag.FlagSet
-	name        *string
-	duration    *time.Duration
-	outKeyPath  *string
-	outCertPath *string
-	outQRPath   *string
-	groups      *string
-	ips         *string
-	subnets     *string
+	set              *flag.FlagSet
+	name             *string
+	duration         *time.Duration
+	outKeyPath       *string
+	outCertPath      *string
+	outQRPath        *string
+	groups           *string
+	ips              *string
+	subnets          *string
+	argonMemory      *uint
+	argonIterations  *uint
+	argonParallelism *uint
+	encryption       *bool
+
+	curve *string
 }
 
 func newCaFlags() *caFlags {
@@ -39,10 +47,29 @@ func newCaFlags() *caFlags {
 	cf.groups = cf.set.String("groups", "", "Optional: comma separated list of groups. This will limit which groups subordinate certs can use")
 	cf.ips = cf.set.String("ips", "", "Optional: comma separated list of ipv4 address and network in CIDR notation. This will limit which ipv4 addresses and networks subordinate certs can use for ip addresses")
 	cf.subnets = cf.set.String("subnets", "", "Optional: comma separated list of ipv4 address and network in CIDR notation. This will limit which ipv4 addresses and networks subordinate certs can use in subnets")
+	cf.argonMemory = cf.set.Uint("argon-memory", 2*1024*1024, "Optional: Argon2 memory parameter (in KiB) used for encrypted private key passphrase")
+	cf.argonParallelism = cf.set.Uint("argon-parallelism", 4, "Optional: Argon2 parallelism parameter used for encrypted private key passphrase")
+	cf.argonIterations = cf.set.Uint("argon-iterations", 1, "Optional: Argon2 iterations parameter used for encrypted private key passphrase")
+	cf.encryption = cf.set.Bool("encrypt", false, "Optional: prompt for passphrase and write out-key in an encrypted format")
+	cf.curve = cf.set.String("curve", "25519", "EdDSA/ECDSA Curve (25519, P256)")
 	return &cf
 }
 
-func ca(args []string, out io.Writer, errOut io.Writer) error {
+func parseArgonParameters(memory uint, parallelism uint, iterations uint) (*cert.Argon2Parameters, error) {
+	if memory <= 0 || memory > math.MaxUint32 {
+		return nil, newHelpErrorf("-argon-memory must be be greater than 0 and no more than %d KiB", uint32(math.MaxUint32))
+	}
+	if parallelism <= 0 || parallelism > math.MaxUint8 {
+		return nil, newHelpErrorf("-argon-parallelism must be be greater than 0 and no more than %d", math.MaxUint8)
+	}
+	if iterations <= 0 || iterations > math.MaxUint32 {
+		return nil, newHelpErrorf("-argon-iterations must be be greater than 0 and no more than %d", uint32(math.MaxUint32))
+	}
+
+	return cert.NewArgon2Parameters(uint32(memory), uint8(parallelism), uint32(iterations)), nil
+}
+
+func ca(args []string, out io.Writer, errOut io.Writer, pr PasswordReader) error {
 	cf := newCaFlags()
 	err := cf.set.Parse(args)
 	if err != nil {
@@ -58,6 +85,12 @@ func ca(args []string, out io.Writer, errOut io.Writer) error {
 	if err := mustFlagString("out-crt", cf.outCertPath); err != nil {
 		return err
 	}
+	var kdfParams *cert.Argon2Parameters
+	if *cf.encryption {
+		if kdfParams, err = parseArgonParameters(*cf.argonMemory, *cf.argonParallelism, *cf.argonIterations); err != nil {
+			return err
+		}
+	}
 
 	if *cf.duration <= 0 {
 		return &helpError{"-duration must be greater than 0"}
@@ -109,9 +142,53 @@ func ca(args []string, out io.Writer, errOut io.Writer) error {
 		}
 	}
 
-	pub, rawPriv, err := ed25519.GenerateKey(rand.Reader)
-	if err != nil {
-		return fmt.Errorf("error while generating ed25519 keys: %s", err)
+	var passphrase []byte
+	if *cf.encryption {
+		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 {
+			return fmt.Errorf("no passphrase specified, remove -encrypt flag to write out-key in plaintext")
+		}
+	}
+
+	var curve cert.Curve
+	var pub, rawPriv []byte
+	switch *cf.curve {
+	case "25519", "X25519", "Curve25519", "CURVE25519":
+		curve = cert.Curve_CURVE25519
+		pub, rawPriv, err = ed25519.GenerateKey(rand.Reader)
+		if err != nil {
+			return fmt.Errorf("error while generating ed25519 keys: %s", err)
+		}
+	case "P256":
+		var key *ecdsa.PrivateKey
+		curve = cert.Curve_P256
+		key, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+		if err != nil {
+			return fmt.Errorf("error while generating ecdsa keys: %s", err)
+		}
+
+		// ecdh.PrivateKey lets us get at the encoded bytes, even though
+		// we aren't using ECDH here.
+		eKey, err := key.ECDH()
+		if err != nil {
+			return fmt.Errorf("error while converting ecdsa key: %s", err)
+		}
+		rawPriv = eKey.Bytes()
+		pub = eKey.PublicKey().Bytes()
 	}
 
 	nc := cert.NebulaCertificate{
@@ -124,6 +201,7 @@ func ca(args []string, out io.Writer, errOut io.Writer) error {
 			NotAfter:  time.Now().Add(*cf.duration),
 			PublicKey: pub,
 			IsCA:      true,
+			Curve:     curve,
 		},
 	}
 
@@ -135,22 +213,32 @@ func ca(args []string, out io.Writer, errOut io.Writer) error {
 		return fmt.Errorf("refusing to overwrite existing CA cert: %s", *cf.outCertPath)
 	}
 
-	err = nc.Sign(rawPriv)
+	err = nc.Sign(curve, rawPriv)
 	if err != nil {
 		return fmt.Errorf("error while signing: %s", err)
 	}
 
-	err = ioutil.WriteFile(*cf.outKeyPath, cert.MarshalEd25519PrivateKey(rawPriv), 0600)
+	var b []byte
+	if *cf.encryption {
+		b, err = cert.EncryptAndMarshalSigningPrivateKey(curve, rawPriv, passphrase, kdfParams)
+		if err != nil {
+			return fmt.Errorf("error while encrypting out-key: %s", err)
+		}
+	} else {
+		b = cert.MarshalSigningPrivateKey(curve, rawPriv)
+	}
+
+	err = os.WriteFile(*cf.outKeyPath, b, 0600)
 	if err != nil {
 		return fmt.Errorf("error while writing out-key: %s", err)
 	}
 
-	b, err := nc.MarshalToPEM()
+	b, err = nc.MarshalToPEM()
 	if err != nil {
 		return fmt.Errorf("error while marshalling certificate: %s", err)
 	}
 
-	err = ioutil.WriteFile(*cf.outCertPath, b, 0600)
+	err = os.WriteFile(*cf.outCertPath, b, 0600)
 	if err != nil {
 		return fmt.Errorf("error while writing out-crt: %s", err)
 	}
@@ -161,7 +249,7 @@ func ca(args []string, out io.Writer, errOut io.Writer) error {
 			return fmt.Errorf("error while generating qr code: %s", err)
 		}
 
-		err = ioutil.WriteFile(*cf.outQRPath, b, 0600)
+		err = os.WriteFile(*cf.outQRPath, b, 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-qr: %s", err)
 		}

cmd/nebula-cert/ca_test.go

@@ -5,8 +5,10 @@ package main
 
 import (
 	"bytes"
-	"io/ioutil"
+	"encoding/pem"
+	"errors"
 	"os"
+	"strings"
 	"testing"
 	"time"
 
@@ -26,8 +28,18 @@ func Test_caHelp(t *testing.T) {
 	assert.Equal(
 		t,
 		"Usage of "+os.Args[0]+" ca <flags>: create a self signed certificate authority\n"+
+			"  -argon-iterations uint\n"+
+			"    \tOptional: Argon2 iterations parameter used for encrypted private key passphrase (default 1)\n"+
+			"  -argon-memory uint\n"+
+			"    \tOptional: Argon2 memory parameter (in KiB) used for encrypted private key passphrase (default 2097152)\n"+
+			"  -argon-parallelism uint\n"+
+			"    \tOptional: Argon2 parallelism parameter used for encrypted private key passphrase (default 4)\n"+
+			"  -curve string\n"+
+			"    \tEdDSA/ECDSA Curve (25519, P256) (default \"25519\")\n"+
 			"  -duration duration\n"+
 			"    \tOptional: amount of time the certificate should be valid for. Valid time units are seconds: \"s\", minutes: \"m\", hours: \"h\" (default 8760h0m0s)\n"+
+			"  -encrypt\n"+
+			"    \tOptional: prompt for passphrase and write out-key in an encrypted format\n"+
 			"  -groups string\n"+
 			"    \tOptional: comma separated list of groups. This will limit which groups subordinate certs can use\n"+
 			"  -ips string\n"+
@@ -50,18 +62,38 @@ func Test_ca(t *testing.T) {
 	ob := &bytes.Buffer{}
 	eb := &bytes.Buffer{}
 
+	nopw := &StubPasswordReader{
+		password: []byte(""),
+		err:      nil,
+	}
+
+	errpw := &StubPasswordReader{
+		password: []byte(""),
+		err:      errors.New("stub error"),
+	}
+
+	passphrase := []byte("DO NOT USE THIS KEY")
+	testpw := &StubPasswordReader{
+		password: passphrase,
+		err:      nil,
+	}
+
+	pwPromptOb := "Enter passphrase: "
+
 	// required args
-	assertHelpError(t, ca([]string{"-out-key", "nope", "-out-crt", "nope", "duration", "100m"}, ob, eb), "-name is required")
+	assertHelpError(t, ca(
+		[]string{"-out-key", "nope", "-out-crt", "nope", "duration", "100m"}, ob, eb, nopw,
+	), "-name is required")
 	assert.Equal(t, "", ob.String())
 	assert.Equal(t, "", eb.String())
 
 	// ipv4 only ips
-	assertHelpError(t, ca([]string{"-name", "ipv6", "-ips", "100::100/100"}, ob, eb), "invalid ip definition: can only be ipv4, have 100::100/100")
+	assertHelpError(t, ca([]string{"-name", "ipv6", "-ips", "100::100/100"}, ob, eb, nopw), "invalid ip definition: can only be ipv4, have 100::100/100")
 	assert.Equal(t, "", ob.String())
 	assert.Equal(t, "", eb.String())
 
 	// ipv4 only subnets
-	assertHelpError(t, ca([]string{"-name", "ipv6", "-subnets", "100::100/100"}, ob, eb), "invalid subnet definition: can only be ipv4, have 100::100/100")
+	assertHelpError(t, ca([]string{"-name", "ipv6", "-subnets", "100::100/100"}, ob, eb, nopw), "invalid subnet definition: can only be ipv4, have 100::100/100")
 	assert.Equal(t, "", ob.String())
 	assert.Equal(t, "", eb.String())
 
@@ -69,12 +101,12 @@ func Test_ca(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args := []string{"-name", "test", "-duration", "100m", "-out-crt", "/do/not/write/pleasecrt", "-out-key", "/do/not/write/pleasekey"}
-	assert.EqualError(t, ca(args, ob, eb), "error while writing out-key: open /do/not/write/pleasekey: "+NoSuchDirError)
+	assert.EqualError(t, ca(args, ob, eb, nopw), "error while writing out-key: open /do/not/write/pleasekey: "+NoSuchDirError)
 	assert.Equal(t, "", ob.String())
 	assert.Equal(t, "", eb.String())
 
 	// create temp key file
-	keyF, err := ioutil.TempFile("", "test.key")
+	keyF, err := os.CreateTemp("", "test.key")
 	assert.Nil(t, err)
 	os.Remove(keyF.Name())
 
@@ -82,12 +114,12 @@ func Test_ca(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-name", "test", "-duration", "100m", "-out-crt", "/do/not/write/pleasecrt", "-out-key", keyF.Name()}
-	assert.EqualError(t, ca(args, ob, eb), "error while writing out-crt: open /do/not/write/pleasecrt: "+NoSuchDirError)
+	assert.EqualError(t, ca(args, ob, eb, nopw), "error while writing out-crt: open /do/not/write/pleasecrt: "+NoSuchDirError)
 	assert.Equal(t, "", ob.String())
 	assert.Equal(t, "", eb.String())
 
 	// create temp cert file
-	crtF, err := ioutil.TempFile("", "test.crt")
+	crtF, err := os.CreateTemp("", "test.crt")
 	assert.Nil(t, err)
 	os.Remove(crtF.Name())
 	os.Remove(keyF.Name())
@@ -96,18 +128,18 @@ func Test_ca(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-name", "test", "-duration", "100m", "-groups", "1,,   2    ,        ,,,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
-	assert.Nil(t, ca(args, ob, eb))
+	assert.Nil(t, ca(args, ob, eb, nopw))
 	assert.Equal(t, "", ob.String())
 	assert.Equal(t, "", eb.String())
 
 	// read cert and key files
-	rb, _ := ioutil.ReadFile(keyF.Name())
+	rb, _ := os.ReadFile(keyF.Name())
 	lKey, b, err := cert.UnmarshalEd25519PrivateKey(rb)
 	assert.Len(t, b, 0)
 	assert.Nil(t, err)
 	assert.Len(t, lKey, 64)
 
-	rb, _ = ioutil.ReadFile(crtF.Name())
+	rb, _ = os.ReadFile(crtF.Name())
 	lCrt, b, err := cert.UnmarshalNebulaCertificateFromPEM(rb)
 	assert.Len(t, b, 0)
 	assert.Nil(t, err)
@@ -122,19 +154,67 @@ func Test_ca(t *testing.T) {
 	assert.Equal(t, "", lCrt.Details.Issuer)
 	assert.True(t, lCrt.CheckSignature(lCrt.Details.PublicKey))
 
+	// test encrypted key
+	os.Remove(keyF.Name())
+	os.Remove(crtF.Name())
+	ob.Reset()
+	eb.Reset()
+	args = []string{"-encrypt", "-name", "test", "-duration", "100m", "-groups", "1,2,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
+	assert.Nil(t, ca(args, ob, eb, testpw))
+	assert.Equal(t, pwPromptOb, ob.String())
+	assert.Equal(t, "", eb.String())
+
+	// read encrypted key file and verify default params
+	rb, _ = os.ReadFile(keyF.Name())
+	k, _ := pem.Decode(rb)
+	ned, err := cert.UnmarshalNebulaEncryptedData(k.Bytes)
+	assert.Nil(t, err)
+	// we won't know salt in advance, so just check start of string
+	assert.Equal(t, uint32(2*1024*1024), ned.EncryptionMetadata.Argon2Parameters.Memory)
+	assert.Equal(t, uint8(4), ned.EncryptionMetadata.Argon2Parameters.Parallelism)
+	assert.Equal(t, uint32(1), ned.EncryptionMetadata.Argon2Parameters.Iterations)
+
+	// verify the key is valid and decrypt-able
+	var curve cert.Curve
+	curve, lKey, b, err = cert.DecryptAndUnmarshalSigningPrivateKey(passphrase, rb)
+	assert.Equal(t, cert.Curve_CURVE25519, curve)
+	assert.Nil(t, err)
+	assert.Len(t, b, 0)
+	assert.Len(t, lKey, 64)
+
+	// test when reading passsword results in an error
+	os.Remove(keyF.Name())
+	os.Remove(crtF.Name())
+	ob.Reset()
+	eb.Reset()
+	args = []string{"-encrypt", "-name", "test", "-duration", "100m", "-groups", "1,2,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
+	assert.Error(t, ca(args, ob, eb, errpw))
+	assert.Equal(t, pwPromptOb, ob.String())
+	assert.Equal(t, "", eb.String())
+
+	// test when user fails to enter a password
+	os.Remove(keyF.Name())
+	os.Remove(crtF.Name())
+	ob.Reset()
+	eb.Reset()
+	args = []string{"-encrypt", "-name", "test", "-duration", "100m", "-groups", "1,2,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
+	assert.EqualError(t, ca(args, ob, eb, nopw), "no passphrase specified, remove -encrypt flag to write out-key in plaintext")
+	assert.Equal(t, strings.Repeat(pwPromptOb, 5), ob.String()) // prompts 5 times before giving up
+	assert.Equal(t, "", eb.String())
+
 	// create valid cert/key for overwrite tests
 	os.Remove(keyF.Name())
 	os.Remove(crtF.Name())
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-name", "test", "-duration", "100m", "-groups", "1,,   2    ,        ,,,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
-	assert.Nil(t, ca(args, ob, eb))
+	assert.Nil(t, ca(args, ob, eb, nopw))
 
 	// test that we won't overwrite existing certificate file
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-name", "test", "-duration", "100m", "-groups", "1,,   2    ,        ,,,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
-	assert.EqualError(t, ca(args, ob, eb), "refusing to overwrite existing CA key: "+keyF.Name())
+	assert.EqualError(t, ca(args, ob, eb, nopw), "refusing to overwrite existing CA key: "+keyF.Name())
 	assert.Equal(t, "", ob.String())
 	assert.Equal(t, "", eb.String())
 
@@ -143,7 +223,7 @@ func Test_ca(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-name", "test", "-duration", "100m", "-groups", "1,,   2    ,        ,,,3,4,5", "-out-crt", crtF.Name(), "-out-key", keyF.Name()}
-	assert.EqualError(t, ca(args, ob, eb), "refusing to overwrite existing CA cert: "+crtF.Name())
+	assert.EqualError(t, ca(args, ob, eb, nopw), "refusing to overwrite existing CA cert: "+crtF.Name())
 	assert.Equal(t, "", ob.String())
 	assert.Equal(t, "", eb.String())
 	os.Remove(keyF.Name())

cmd/nebula-cert/keygen.go

@@ -4,7 +4,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 
 	"github.com/slackhq/nebula/cert"
@@ -14,6 +13,8 @@ type keygenFlags struct {
 	set        *flag.FlagSet
 	outKeyPath *string
 	outPubPath *string
+
+	curve *string
 }
 
 func newKeygenFlags() *keygenFlags {
@@ -21,6 +22,7 @@ func newKeygenFlags() *keygenFlags {
 	cf.set.Usage = func() {}
 	cf.outPubPath = cf.set.String("out-pub", "", "Required: path to write the public key to")
 	cf.outKeyPath = cf.set.String("out-key", "", "Required: path to write the private key to")
+	cf.curve = cf.set.String("curve", "25519", "ECDH Curve (25519, P256)")
 	return &cf
 }
 
@@ -38,14 +40,25 @@ func keygen(args []string, out io.Writer, errOut io.Writer) error {
 		return err
 	}
 
-	pub, rawPriv := x25519Keypair()
+	var pub, rawPriv []byte
+	var curve cert.Curve
+	switch *cf.curve {
+	case "25519", "X25519", "Curve25519", "CURVE25519":
+		pub, rawPriv = x25519Keypair()
+		curve = cert.Curve_CURVE25519
+	case "P256":
+		pub, rawPriv = p256Keypair()
+		curve = cert.Curve_P256
+	default:
+		return fmt.Errorf("invalid curve: %s", *cf.curve)
+	}
 
-	err = ioutil.WriteFile(*cf.outKeyPath, cert.MarshalX25519PrivateKey(rawPriv), 0600)
+	err = os.WriteFile(*cf.outKeyPath, cert.MarshalPrivateKey(curve, rawPriv), 0600)
 	if err != nil {
 		return fmt.Errorf("error while writing out-key: %s", err)
 	}
 
-	err = ioutil.WriteFile(*cf.outPubPath, cert.MarshalX25519PublicKey(pub), 0600)
+	err = os.WriteFile(*cf.outPubPath, cert.MarshalPublicKey(curve, pub), 0600)
 	if err != nil {
 		return fmt.Errorf("error while writing out-pub: %s", err)
 	}

cmd/nebula-cert/keygen_test.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"bytes"
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -22,6 +21,8 @@ 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"+
+			"  -curve string\n"+
+			"    \tECDH Curve (25519, P256) (default \"25519\")\n"+
 			"  -out-key string\n"+
 			"    \tRequired: path to write the private key to\n"+
 			"  -out-pub string\n"+
@@ -52,7 +53,7 @@ func Test_keygen(t *testing.T) {
 	assert.Equal(t, "", eb.String())
 
 	// create temp key file
-	keyF, err := ioutil.TempFile("", "test.key")
+	keyF, err := os.CreateTemp("", "test.key")
 	assert.Nil(t, err)
 	defer os.Remove(keyF.Name())
 
@@ -65,7 +66,7 @@ func Test_keygen(t *testing.T) {
 	assert.Equal(t, "", eb.String())
 
 	// create temp pub file
-	pubF, err := ioutil.TempFile("", "test.pub")
+	pubF, err := os.CreateTemp("", "test.pub")
 	assert.Nil(t, err)
 	defer os.Remove(pubF.Name())
 
@@ -78,13 +79,13 @@ func Test_keygen(t *testing.T) {
 	assert.Equal(t, "", eb.String())
 
 	// read cert and key files
-	rb, _ := ioutil.ReadFile(keyF.Name())
+	rb, _ := os.ReadFile(keyF.Name())
 	lKey, b, err := cert.UnmarshalX25519PrivateKey(rb)
 	assert.Len(t, b, 0)
 	assert.Nil(t, err)
 	assert.Len(t, lKey, 32)
 
-	rb, _ = ioutil.ReadFile(pubF.Name())
+	rb, _ = os.ReadFile(pubF.Name())
 	lPub, b, err := cert.UnmarshalX25519PublicKey(rb)
 	assert.Len(t, b, 0)
 	assert.Nil(t, err)

cmd/nebula-cert/main.go

@@ -62,11 +62,11 @@ func main() {
 
 	switch args[0] {
 	case "ca":
-		err = ca(args[1:], os.Stdout, os.Stderr)
+		err = ca(args[1:], os.Stdout, os.Stderr, StdinPasswordReader{})
 	case "keygen":
 		err = keygen(args[1:], os.Stdout, os.Stderr)
 	case "sign":
-		err = signCert(args[1:], os.Stdout, os.Stderr)
+		err = signCert(args[1:], os.Stdout, os.Stderr, StdinPasswordReader{})
 	case "print":
 		err = printCert(args[1:], os.Stdout, os.Stderr)
 	case "verify":
@@ -127,6 +127,8 @@ func help(err string, out io.Writer) {
 	fmt.Fprintln(out, "    "+signSummary())
 	fmt.Fprintln(out, "    "+printSummary())
 	fmt.Fprintln(out, "    "+verifySummary())
+	fmt.Fprintln(out, "")
+	fmt.Fprintf(out, "  To see usage for a given mode, use %s <mode> -h\n", os.Args[0])
 }
 
 func mustFlagString(name string, val *string) error {

cmd/nebula-cert/main_test.go

@@ -22,7 +22,9 @@ func Test_help(t *testing.T) {
 		"    " + keygenSummary() + "\n" +
 		"    " + signSummary() + "\n" +
 		"    " + printSummary() + "\n" +
-		"    " + verifySummary() + "\n"
+		"    " + verifySummary() + "\n" +
+		"\n" +
+		"  To see usage for a given mode, use " + os.Args[0] + " <mode> -h\n"
 
 	ob := &bytes.Buffer{}
 

cmd/nebula-cert/passwords.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"os"
+
+	"golang.org/x/term"
+)
+
+var ErrNoTerminal = errors.New("cannot read password from nonexistent terminal")
+
+type PasswordReader interface {
+	ReadPassword() ([]byte, error)
+}
+
+type StdinPasswordReader struct{}
+
+func (pr StdinPasswordReader) ReadPassword() ([]byte, error) {
+	if !term.IsTerminal(int(os.Stdin.Fd())) {
+		return nil, ErrNoTerminal
+	}
+
+	password, err := term.ReadPassword(int(os.Stdin.Fd()))
+	fmt.Println()
+
+	return password, err
+}

cmd/nebula-cert/passwords_test.go

@@ -0,0 +1,10 @@
+package main
+
+type StubPasswordReader struct {
+	password []byte
+	err      error
+}
+
+func (pr *StubPasswordReader) ReadPassword() ([]byte, error) {
+	return pr.password, pr.err
+}

cmd/nebula-cert/print.go

@@ -5,7 +5,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -41,7 +40,7 @@ func printCert(args []string, out io.Writer, errOut io.Writer) error {
 		return err
 	}
 
-	rawCert, err := ioutil.ReadFile(*pf.path)
+	rawCert, err := os.ReadFile(*pf.path)
 	if err != nil {
 		return fmt.Errorf("unable to read cert; %s", err)
 	}
@@ -87,7 +86,7 @@ func printCert(args []string, out io.Writer, errOut io.Writer) error {
 			return fmt.Errorf("error while generating qr code: %s", err)
 		}
 
-		err = ioutil.WriteFile(*pf.outQRPath, b, 0600)
+		err = os.WriteFile(*pf.outQRPath, b, 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-qr: %s", err)
 		}

cmd/nebula-cert/print_test.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"bytes"
-	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -54,7 +53,7 @@ func Test_printCert(t *testing.T) {
 	// invalid cert at path
 	ob.Reset()
 	eb.Reset()
-	tf, err := ioutil.TempFile("", "print-cert")
+	tf, err := os.CreateTemp("", "print-cert")
 	assert.Nil(t, err)
 	defer os.Remove(tf.Name())
 
@@ -87,7 +86,7 @@ func Test_printCert(t *testing.T) {
 	assert.Nil(t, err)
 	assert.Equal(
 		t,
-		"NebulaCertificate {\n\tDetails {\n\t\tName: test\n\t\tIps: []\n\t\tSubnets: []\n\t\tGroups: [\n\t\t\t\"hi\"\n\t\t]\n\t\tNot before: 0001-01-01 00:00:00 +0000 UTC\n\t\tNot After: 0001-01-01 00:00:00 +0000 UTC\n\t\tIs CA: false\n\t\tIssuer: \n\t\tPublic key: 0102030405060708090001020304050607080900010203040506070809000102\n\t}\n\tFingerprint: cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\n\tSignature: 0102030405060708090001020304050607080900010203040506070809000102\n}\nNebulaCertificate {\n\tDetails {\n\t\tName: test\n\t\tIps: []\n\t\tSubnets: []\n\t\tGroups: [\n\t\t\t\"hi\"\n\t\t]\n\t\tNot before: 0001-01-01 00:00:00 +0000 UTC\n\t\tNot After: 0001-01-01 00:00:00 +0000 UTC\n\t\tIs CA: false\n\t\tIssuer: \n\t\tPublic key: 0102030405060708090001020304050607080900010203040506070809000102\n\t}\n\tFingerprint: cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\n\tSignature: 0102030405060708090001020304050607080900010203040506070809000102\n}\nNebulaCertificate {\n\tDetails {\n\t\tName: test\n\t\tIps: []\n\t\tSubnets: []\n\t\tGroups: [\n\t\t\t\"hi\"\n\t\t]\n\t\tNot before: 0001-01-01 00:00:00 +0000 UTC\n\t\tNot After: 0001-01-01 00:00:00 +0000 UTC\n\t\tIs CA: false\n\t\tIssuer: \n\t\tPublic key: 0102030405060708090001020304050607080900010203040506070809000102\n\t}\n\tFingerprint: cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\n\tSignature: 0102030405060708090001020304050607080900010203040506070809000102\n}\n",
+		"NebulaCertificate {\n\tDetails {\n\t\tName: test\n\t\tIps: []\n\t\tSubnets: []\n\t\tGroups: [\n\t\t\t\"hi\"\n\t\t]\n\t\tNot before: 0001-01-01 00:00:00 +0000 UTC\n\t\tNot After: 0001-01-01 00:00:00 +0000 UTC\n\t\tIs CA: false\n\t\tIssuer: \n\t\tPublic key: 0102030405060708090001020304050607080900010203040506070809000102\n\t\tCurve: CURVE25519\n\t}\n\tFingerprint: cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\n\tSignature: 0102030405060708090001020304050607080900010203040506070809000102\n}\nNebulaCertificate {\n\tDetails {\n\t\tName: test\n\t\tIps: []\n\t\tSubnets: []\n\t\tGroups: [\n\t\t\t\"hi\"\n\t\t]\n\t\tNot before: 0001-01-01 00:00:00 +0000 UTC\n\t\tNot After: 0001-01-01 00:00:00 +0000 UTC\n\t\tIs CA: false\n\t\tIssuer: \n\t\tPublic key: 0102030405060708090001020304050607080900010203040506070809000102\n\t\tCurve: CURVE25519\n\t}\n\tFingerprint: cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\n\tSignature: 0102030405060708090001020304050607080900010203040506070809000102\n}\nNebulaCertificate {\n\tDetails {\n\t\tName: test\n\t\tIps: []\n\t\tSubnets: []\n\t\tGroups: [\n\t\t\t\"hi\"\n\t\t]\n\t\tNot before: 0001-01-01 00:00:00 +0000 UTC\n\t\tNot After: 0001-01-01 00:00:00 +0000 UTC\n\t\tIs CA: false\n\t\tIssuer: \n\t\tPublic key: 0102030405060708090001020304050607080900010203040506070809000102\n\t\tCurve: CURVE25519\n\t}\n\tFingerprint: cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\n\tSignature: 0102030405060708090001020304050607080900010203040506070809000102\n}\n",
 		ob.String(),
 	)
 	assert.Equal(t, "", eb.String())
@@ -115,7 +114,7 @@ func Test_printCert(t *testing.T) {
 	assert.Nil(t, err)
 	assert.Equal(
 		t,
-		"{\"details\":{\"groups\":[\"hi\"],\"ips\":[],\"isCa\":false,\"issuer\":\"\",\"name\":\"test\",\"notAfter\":\"0001-01-01T00:00:00Z\",\"notBefore\":\"0001-01-01T00:00:00Z\",\"publicKey\":\"0102030405060708090001020304050607080900010203040506070809000102\",\"subnets\":[]},\"fingerprint\":\"cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\",\"signature\":\"0102030405060708090001020304050607080900010203040506070809000102\"}\n{\"details\":{\"groups\":[\"hi\"],\"ips\":[],\"isCa\":false,\"issuer\":\"\",\"name\":\"test\",\"notAfter\":\"0001-01-01T00:00:00Z\",\"notBefore\":\"0001-01-01T00:00:00Z\",\"publicKey\":\"0102030405060708090001020304050607080900010203040506070809000102\",\"subnets\":[]},\"fingerprint\":\"cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\",\"signature\":\"0102030405060708090001020304050607080900010203040506070809000102\"}\n{\"details\":{\"groups\":[\"hi\"],\"ips\":[],\"isCa\":false,\"issuer\":\"\",\"name\":\"test\",\"notAfter\":\"0001-01-01T00:00:00Z\",\"notBefore\":\"0001-01-01T00:00:00Z\",\"publicKey\":\"0102030405060708090001020304050607080900010203040506070809000102\",\"subnets\":[]},\"fingerprint\":\"cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\",\"signature\":\"0102030405060708090001020304050607080900010203040506070809000102\"}\n",
+		"{\"details\":{\"curve\":\"CURVE25519\",\"groups\":[\"hi\"],\"ips\":[],\"isCa\":false,\"issuer\":\"\",\"name\":\"test\",\"notAfter\":\"0001-01-01T00:00:00Z\",\"notBefore\":\"0001-01-01T00:00:00Z\",\"publicKey\":\"0102030405060708090001020304050607080900010203040506070809000102\",\"subnets\":[]},\"fingerprint\":\"cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\",\"signature\":\"0102030405060708090001020304050607080900010203040506070809000102\"}\n{\"details\":{\"curve\":\"CURVE25519\",\"groups\":[\"hi\"],\"ips\":[],\"isCa\":false,\"issuer\":\"\",\"name\":\"test\",\"notAfter\":\"0001-01-01T00:00:00Z\",\"notBefore\":\"0001-01-01T00:00:00Z\",\"publicKey\":\"0102030405060708090001020304050607080900010203040506070809000102\",\"subnets\":[]},\"fingerprint\":\"cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\",\"signature\":\"0102030405060708090001020304050607080900010203040506070809000102\"}\n{\"details\":{\"curve\":\"CURVE25519\",\"groups\":[\"hi\"],\"ips\":[],\"isCa\":false,\"issuer\":\"\",\"name\":\"test\",\"notAfter\":\"0001-01-01T00:00:00Z\",\"notBefore\":\"0001-01-01T00:00:00Z\",\"publicKey\":\"0102030405060708090001020304050607080900010203040506070809000102\",\"subnets\":[]},\"fingerprint\":\"cc3492c0e9c48f17547f5987ea807462ebb3451e622590a10bb3763c344c82bd\",\"signature\":\"0102030405060708090001020304050607080900010203040506070809000102\"}\n",
 		ob.String(),
 	)
 	assert.Equal(t, "", eb.String())

cmd/nebula-cert/sign.go

@@ -1,11 +1,11 @@
 package main
 
 import (
+	"crypto/ecdh"
 	"crypto/rand"
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"os"
 	"strings"
@@ -49,7 +49,7 @@ func newSignFlags() *signFlags {
 
 }
 
-func signCert(args []string, out io.Writer, errOut io.Writer) error {
+func signCert(args []string, out io.Writer, errOut io.Writer, pr PasswordReader) error {
 	sf := newSignFlags()
 	err := sf.set.Parse(args)
 	if err != nil {
@@ -72,17 +72,46 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 		return newHelpErrorf("cannot set both -in-pub and -out-key")
 	}
 
-	rawCAKey, err := ioutil.ReadFile(*sf.caKeyPath)
+	rawCAKey, err := os.ReadFile(*sf.caKeyPath)
 	if err != nil {
 		return fmt.Errorf("error while reading ca-key: %s", err)
 	}
 
-	caKey, _, err := cert.UnmarshalEd25519PrivateKey(rawCAKey)
-	if err != nil {
+	var curve cert.Curve
+	var caKey []byte
+
+	// naively attempt to decode the private key as though it is not encrypted
+	caKey, _, curve, err = cert.UnmarshalSigningPrivateKey(rawCAKey)
+	if err == cert.ErrPrivateKeyEncrypted {
+		// ask for a passphrase until we get one
+		var passphrase []byte
+		for i := 0; i < 5; i++ {
+			out.Write([]byte("Enter passphrase: "))
+			passphrase, err = pr.ReadPassword()
+
+			if 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 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)
+		}
+	} else if err != nil {
 		return fmt.Errorf("error while parsing ca-key: %s", err)
 	}
 
-	rawCACert, err := ioutil.ReadFile(*sf.caCertPath)
+	rawCACert, err := os.ReadFile(*sf.caCertPath)
 	if err != nil {
 		return fmt.Errorf("error while reading ca-crt: %s", err)
 	}
@@ -92,7 +121,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 		return fmt.Errorf("error while parsing ca-crt: %s", err)
 	}
 
-	if err := caCert.VerifyPrivateKey(caKey); err != nil {
+	if err := caCert.VerifyPrivateKey(curve, caKey); err != nil {
 		return fmt.Errorf("refusing to sign, root certificate does not match private key")
 	}
 
@@ -148,16 +177,20 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 
 	var pub, rawPriv []byte
 	if *sf.inPubPath != "" {
-		rawPub, err := ioutil.ReadFile(*sf.inPubPath)
+		rawPub, err := os.ReadFile(*sf.inPubPath)
 		if err != nil {
 			return fmt.Errorf("error while reading in-pub: %s", err)
 		}
-		pub, _, err = cert.UnmarshalX25519PublicKey(rawPub)
+		var pubCurve cert.Curve
+		pub, _, pubCurve, err = cert.UnmarshalPublicKey(rawPub)
 		if err != nil {
 			return fmt.Errorf("error while parsing in-pub: %s", err)
 		}
+		if pubCurve != curve {
+			return fmt.Errorf("curve of in-pub does not match ca")
+		}
 	} else {
-		pub, rawPriv = x25519Keypair()
+		pub, rawPriv = newKeypair(curve)
 	}
 
 	nc := cert.NebulaCertificate{
@@ -171,6 +204,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 			PublicKey: pub,
 			IsCA:      false,
 			Issuer:    issuer,
+			Curve:     curve,
 		},
 	}
 
@@ -190,7 +224,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 		return fmt.Errorf("refusing to overwrite existing cert: %s", *sf.outCertPath)
 	}
 
-	err = nc.Sign(caKey)
+	err = nc.Sign(curve, caKey)
 	if err != nil {
 		return fmt.Errorf("error while signing: %s", err)
 	}
@@ -200,7 +234,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 			return fmt.Errorf("refusing to overwrite existing key: %s", *sf.outKeyPath)
 		}
 
-		err = ioutil.WriteFile(*sf.outKeyPath, cert.MarshalX25519PrivateKey(rawPriv), 0600)
+		err = os.WriteFile(*sf.outKeyPath, cert.MarshalPrivateKey(curve, rawPriv), 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-key: %s", err)
 		}
@@ -211,7 +245,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 		return fmt.Errorf("error while marshalling certificate: %s", err)
 	}
 
-	err = ioutil.WriteFile(*sf.outCertPath, b, 0600)
+	err = os.WriteFile(*sf.outCertPath, b, 0600)
 	if err != nil {
 		return fmt.Errorf("error while writing out-crt: %s", err)
 	}
@@ -222,7 +256,7 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 			return fmt.Errorf("error while generating qr code: %s", err)
 		}
 
-		err = ioutil.WriteFile(*sf.outQRPath, b, 0600)
+		err = os.WriteFile(*sf.outQRPath, b, 0600)
 		if err != nil {
 			return fmt.Errorf("error while writing out-qr: %s", err)
 		}
@@ -231,6 +265,17 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
 	return nil
 }
 
+func newKeypair(curve cert.Curve) ([]byte, []byte) {
+	switch curve {
+	case cert.Curve_CURVE25519:
+		return x25519Keypair()
+	case cert.Curve_P256:
+		return p256Keypair()
+	default:
+		return nil, nil
+	}
+}
+
 func x25519Keypair() ([]byte, []byte) {
 	privkey := make([]byte, 32)
 	if _, err := io.ReadFull(rand.Reader, privkey); err != nil {
@@ -245,6 +290,15 @@ func x25519Keypair() ([]byte, []byte) {
 	return pubkey, privkey
 }
 
+func p256Keypair() ([]byte, []byte) {
+	privkey, err := ecdh.P256().GenerateKey(rand.Reader)
+	if err != nil {
+		panic(err)
+	}
+	pubkey := privkey.PublicKey()
+	return pubkey.Bytes(), privkey.Bytes()
+}
+
 func signSummary() string {
 	return "sign <flags>: create and sign a certificate"
 }

cmd/nebula-cert/sign_test.go

@@ -6,7 +6,7 @@ package main
 import (
 	"bytes"
 	"crypto/rand"
-	"io/ioutil"
+	"errors"
 	"os"
 	"testing"
 	"time"
@@ -58,17 +58,39 @@ func Test_signCert(t *testing.T) {
 	ob := &bytes.Buffer{}
 	eb := &bytes.Buffer{}
 
+	nopw := &StubPasswordReader{
+		password: []byte(""),
+		err:      nil,
+	}
+
+	errpw := &StubPasswordReader{
+		password: []byte(""),
+		err:      errors.New("stub error"),
+	}
+
+	passphrase := []byte("DO NOT USE THIS KEY")
+	testpw := &StubPasswordReader{
+		password: passphrase,
+		err:      nil,
+	}
+
 	// required args
-	assertHelpError(t, signCert([]string{"-ca-crt", "./nope", "-ca-key", "./nope", "-ip", "1.1.1.1/24", "-out-key", "nope", "-out-crt", "nope"}, ob, eb), "-name is required")
+	assertHelpError(t, signCert(
+		[]string{"-ca-crt", "./nope", "-ca-key", "./nope", "-ip", "1.1.1.1/24", "-out-key", "nope", "-out-crt", "nope"}, ob, eb, nopw,
+	), "-name is required")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
-	assertHelpError(t, signCert([]string{"-ca-crt", "./nope", "-ca-key", "./nope", "-name", "test", "-out-key", "nope", "-out-crt", "nope"}, ob, eb), "-ip is required")
+	assertHelpError(t, signCert(
+		[]string{"-ca-crt", "./nope", "-ca-key", "./nope", "-name", "test", "-out-key", "nope", "-out-crt", "nope"}, ob, eb, nopw,
+	), "-ip is required")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	// cannot set -in-pub and -out-key
-	assertHelpError(t, signCert([]string{"-ca-crt", "./nope", "-ca-key", "./nope", "-name", "test", "-in-pub", "nope", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope"}, ob, eb), "cannot set both -in-pub and -out-key")
+	assertHelpError(t, signCert(
+		[]string{"-ca-crt", "./nope", "-ca-key", "./nope", "-name", "test", "-in-pub", "nope", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope"}, ob, eb, nopw,
+	), "cannot set both -in-pub and -out-key")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -76,17 +98,17 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args := []string{"-ca-crt", "./nope", "-ca-key", "./nope", "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m"}
-	assert.EqualError(t, signCert(args, ob, eb), "error while reading ca-key: open ./nope: "+NoSuchFileError)
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "error while reading ca-key: open ./nope: "+NoSuchFileError)
 
 	// failed to unmarshal key
 	ob.Reset()
 	eb.Reset()
-	caKeyF, err := ioutil.TempFile("", "sign-cert.key")
+	caKeyF, err := os.CreateTemp("", "sign-cert.key")
 	assert.Nil(t, err)
 	defer os.Remove(caKeyF.Name())
 
 	args = []string{"-ca-crt", "./nope", "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m"}
-	assert.EqualError(t, signCert(args, ob, eb), "error while parsing ca-key: input did not contain a valid PEM encoded block")
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "error while parsing ca-key: input did not contain a valid PEM encoded block")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -98,19 +120,19 @@ func Test_signCert(t *testing.T) {
 
 	// failed to read cert
 	args = []string{"-ca-crt", "./nope", "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m"}
-	assert.EqualError(t, signCert(args, ob, eb), "error while reading ca-crt: open ./nope: "+NoSuchFileError)
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "error while reading ca-crt: open ./nope: "+NoSuchFileError)
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	// failed to unmarshal cert
 	ob.Reset()
 	eb.Reset()
-	caCrtF, err := ioutil.TempFile("", "sign-cert.crt")
+	caCrtF, err := os.CreateTemp("", "sign-cert.crt")
 	assert.Nil(t, err)
 	defer os.Remove(caCrtF.Name())
 
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m"}
-	assert.EqualError(t, signCert(args, ob, eb), "error while parsing ca-crt: input did not contain a valid PEM encoded block")
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "error while parsing ca-crt: input did not contain a valid PEM encoded block")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -129,19 +151,19 @@ func Test_signCert(t *testing.T) {
 
 	// failed to read pub
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-in-pub", "./nope", "-duration", "100m"}
-	assert.EqualError(t, signCert(args, ob, eb), "error while reading in-pub: open ./nope: "+NoSuchFileError)
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "error while reading in-pub: open ./nope: "+NoSuchFileError)
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	// failed to unmarshal pub
 	ob.Reset()
 	eb.Reset()
-	inPubF, err := ioutil.TempFile("", "in.pub")
+	inPubF, err := os.CreateTemp("", "in.pub")
 	assert.Nil(t, err)
 	defer os.Remove(inPubF.Name())
 
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-in-pub", inPubF.Name(), "-duration", "100m"}
-	assert.EqualError(t, signCert(args, ob, eb), "error while parsing in-pub: input did not contain a valid PEM encoded block")
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "error while parsing in-pub: input did not contain a valid PEM encoded block")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -155,14 +177,14 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "a1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m"}
-	assertHelpError(t, signCert(args, ob, eb), "invalid ip definition: invalid CIDR address: a1.1.1.1/24")
+	assertHelpError(t, signCert(args, ob, eb, nopw), "invalid ip definition: invalid CIDR address: a1.1.1.1/24")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "100::100/100", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m"}
-	assertHelpError(t, signCert(args, ob, eb), "invalid ip definition: can only be ipv4, have 100::100/100")
+	assertHelpError(t, signCert(args, ob, eb, nopw), "invalid ip definition: can only be ipv4, have 100::100/100")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -170,20 +192,20 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-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", "a"}
-	assertHelpError(t, signCert(args, ob, eb), "invalid subnet definition: invalid CIDR address: a")
+	assertHelpError(t, signCert(args, ob, eb, nopw), "invalid subnet definition: invalid CIDR address: a")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-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), "invalid subnet definition: can only be ipv4, have 100::100/100")
+	assertHelpError(t, signCert(args, ob, eb, nopw), "invalid subnet definition: can only be ipv4, have 100::100/100")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	// mismatched ca key
 	_, caPriv2, _ := ed25519.GenerateKey(rand.Reader)
-	caKeyF2, err := ioutil.TempFile("", "sign-cert-2.key")
+	caKeyF2, err := os.CreateTemp("", "sign-cert-2.key")
 	assert.Nil(t, err)
 	defer os.Remove(caKeyF2.Name())
 	caKeyF2.Write(cert.MarshalEd25519PrivateKey(caPriv2))
@@ -191,7 +213,7 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF2.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "nope", "-out-key", "nope", "-duration", "100m", "-subnets", "a"}
-	assert.EqualError(t, signCert(args, ob, eb), "refusing to sign, root certificate does not match private key")
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "refusing to sign, root certificate does not match private key")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -199,12 +221,12 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "/do/not/write/pleasecrt", "-out-key", "/do/not/write/pleasekey", "-duration", "100m", "-subnets", "10.1.1.1/32"}
-	assert.EqualError(t, signCert(args, ob, eb), "error while writing out-key: open /do/not/write/pleasekey: "+NoSuchDirError)
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "error while writing out-key: open /do/not/write/pleasekey: "+NoSuchDirError)
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	// create temp key file
-	keyF, err := ioutil.TempFile("", "test.key")
+	keyF, err := os.CreateTemp("", "test.key")
 	assert.Nil(t, err)
 	os.Remove(keyF.Name())
 
@@ -212,13 +234,13 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", "/do/not/write/pleasecrt", "-out-key", keyF.Name(), "-duration", "100m", "-subnets", "10.1.1.1/32"}
-	assert.EqualError(t, signCert(args, ob, eb), "error while writing out-crt: open /do/not/write/pleasecrt: "+NoSuchDirError)
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "error while writing out-crt: open /do/not/write/pleasecrt: "+NoSuchDirError)
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 	os.Remove(keyF.Name())
 
 	// create temp cert file
-	crtF, err := ioutil.TempFile("", "test.crt")
+	crtF, err := os.CreateTemp("", "test.crt")
 	assert.Nil(t, err)
 	os.Remove(crtF.Name())
 
@@ -226,18 +248,18 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-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"}
-	assert.Nil(t, signCert(args, ob, eb))
+	assert.Nil(t, signCert(args, ob, eb, nopw))
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	// read cert and key files
-	rb, _ := ioutil.ReadFile(keyF.Name())
+	rb, _ := os.ReadFile(keyF.Name())
 	lKey, b, err := cert.UnmarshalX25519PrivateKey(rb)
 	assert.Len(t, b, 0)
 	assert.Nil(t, err)
 	assert.Len(t, lKey, 32)
 
-	rb, _ = ioutil.ReadFile(crtF.Name())
+	rb, _ = os.ReadFile(crtF.Name())
 	lCrt, b, err := cert.UnmarshalNebulaCertificateFromPEM(rb)
 	assert.Len(t, b, 0)
 	assert.Nil(t, err)
@@ -268,12 +290,12 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-ca-crt", caCrtF.Name(), "-ca-key", caKeyF.Name(), "-name", "test", "-ip", "1.1.1.1/24", "-out-crt", crtF.Name(), "-in-pub", inPubF.Name(), "-duration", "100m", "-groups", "1"}
-	assert.Nil(t, signCert(args, ob, eb))
+	assert.Nil(t, signCert(args, ob, eb, nopw))
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
 	// read cert file and check pub key matches in-pub
-	rb, _ = ioutil.ReadFile(crtF.Name())
+	rb, _ = os.ReadFile(crtF.Name())
 	lCrt, b, err = cert.UnmarshalNebulaCertificateFromPEM(rb)
 	assert.Len(t, b, 0)
 	assert.Nil(t, err)
@@ -283,7 +305,7 @@ func Test_signCert(t *testing.T) {
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-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", "1000m", "-subnets", "10.1.1.1/32, ,   10.2.2.2/32   ,   ,  ,, 10.5.5.5/32", "-groups", "1,,   2    ,        ,,,3,4,5"}
-	assert.EqualError(t, signCert(args, ob, eb), "refusing to sign, root certificate constraints violated: certificate expires after signing certificate")
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "refusing to sign, root certificate constraints violated: certificate expires after signing certificate")
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -291,14 +313,14 @@ func Test_signCert(t *testing.T) {
 	os.Remove(keyF.Name())
 	os.Remove(crtF.Name())
 	args = []string{"-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"}
-	assert.Nil(t, signCert(args, ob, eb))
+	assert.Nil(t, signCert(args, ob, eb, nopw))
 
 	// test that we won't overwrite existing key file
 	os.Remove(crtF.Name())
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-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"}
-	assert.EqualError(t, signCert(args, ob, eb), "refusing to overwrite existing key: "+keyF.Name())
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "refusing to overwrite existing key: "+keyF.Name())
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
 
@@ -306,14 +328,83 @@ func Test_signCert(t *testing.T) {
 	os.Remove(keyF.Name())
 	os.Remove(crtF.Name())
 	args = []string{"-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"}
-	assert.Nil(t, signCert(args, ob, eb))
+	assert.Nil(t, signCert(args, ob, eb, nopw))
 
 	// test that we won't overwrite existing certificate file
 	os.Remove(keyF.Name())
 	ob.Reset()
 	eb.Reset()
 	args = []string{"-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"}
-	assert.EqualError(t, signCert(args, ob, eb), "refusing to overwrite existing cert: "+crtF.Name())
+	assert.EqualError(t, signCert(args, ob, eb, nopw), "refusing to overwrite existing cert: "+crtF.Name())
 	assert.Empty(t, ob.String())
 	assert.Empty(t, eb.String())
+
+	// create valid cert/key using encrypted CA key
+	os.Remove(caKeyF.Name())
+	os.Remove(caCrtF.Name())
+	os.Remove(keyF.Name())
+	os.Remove(crtF.Name())
+	ob.Reset()
+	eb.Reset()
+
+	caKeyF, err = os.CreateTemp("", "sign-cert.key")
+	assert.Nil(t, err)
+	defer os.Remove(caKeyF.Name())
+
+	caCrtF, err = os.CreateTemp("", "sign-cert.crt")
+	assert.Nil(t, err)
+	defer os.Remove(caCrtF.Name())
+
+	// generate the encrypted key
+	caPub, caPriv, _ = ed25519.GenerateKey(rand.Reader)
+	kdfParams := cert.NewArgon2Parameters(64*1024, 4, 3)
+	b, _ = cert.EncryptAndMarshalSigningPrivateKey(cert.Curve_CURVE25519, caPriv, passphrase, kdfParams)
+	caKeyF.Write(b)
+
+	ca = cert.NebulaCertificate{
+		Details: cert.NebulaCertificateDetails{
+			Name:      "ca",
+			NotBefore: time.Now(),
+			NotAfter:  time.Now().Add(time.Minute * 200),
+			PublicKey: caPub,
+			IsCA:      true,
+		},
+	}
+	b, _ = ca.MarshalToPEM()
+	caCrtF.Write(b)
+
+	// test with the proper password
+	args = []string{"-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"}
+	assert.Nil(t, signCert(args, ob, eb, testpw))
+	assert.Equal(t, "Enter passphrase: ", ob.String())
+	assert.Empty(t, eb.String())
+
+	// test with the wrong password
+	ob.Reset()
+	eb.Reset()
+
+	testpw.password = []byte("invalid password")
+	args = []string{"-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"}
+	assert.Error(t, signCert(args, ob, eb, testpw))
+	assert.Equal(t, "Enter passphrase: ", ob.String())
+	assert.Empty(t, eb.String())
+
+	// test with the user not entering a password
+	ob.Reset()
+	eb.Reset()
+
+	args = []string{"-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"}
+	assert.Error(t, signCert(args, ob, eb, nopw))
+	// normally the user hitting enter on the prompt would add newlines between these
+	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()
+	eb.Reset()
+
+	args = []string{"-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"}
+	assert.Error(t, signCert(args, ob, eb, errpw))
+	assert.Equal(t, "Enter passphrase: ", ob.String())
+	assert.Empty(t, eb.String())
 }

cmd/nebula-cert/verify.go

@@ -4,7 +4,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"strings"
 	"time"
@@ -40,7 +39,7 @@ func verify(args []string, out io.Writer, errOut io.Writer) error {
 		return err
 	}
 
-	rawCACert, err := ioutil.ReadFile(*vf.caPath)
+	rawCACert, err := os.ReadFile(*vf.caPath)
 	if err != nil {
 		return fmt.Errorf("error while reading ca: %s", err)
 	}
@@ -57,7 +56,7 @@ func verify(args []string, out io.Writer, errOut io.Writer) error {
 		}
 	}
 
-	rawCert, err := ioutil.ReadFile(*vf.certPath)
+	rawCert, err := os.ReadFile(*vf.certPath)
 	if err != nil {
 		return fmt.Errorf("unable to read crt; %s", err)
 	}

cmd/nebula-cert/verify_test.go

@@ -3,7 +3,6 @@ package main
 import (
 	"bytes"
 	"crypto/rand"
-	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -56,7 +55,7 @@ func Test_verify(t *testing.T) {
 	// invalid ca at path
 	ob.Reset()
 	eb.Reset()
-	caFile, err := ioutil.TempFile("", "verify-ca")
+	caFile, err := os.CreateTemp("", "verify-ca")
 	assert.Nil(t, err)
 	defer os.Remove(caFile.Name())
 
@@ -77,7 +76,7 @@ func Test_verify(t *testing.T) {
 			IsCA:      true,
 		},
 	}
-	ca.Sign(caPriv)
+	ca.Sign(cert.Curve_CURVE25519, caPriv)
 	b, _ := ca.MarshalToPEM()
 	caFile.Truncate(0)
 	caFile.Seek(0, 0)
@@ -92,7 +91,7 @@ func Test_verify(t *testing.T) {
 	// invalid crt at path
 	ob.Reset()
 	eb.Reset()
-	certFile, err := ioutil.TempFile("", "verify-cert")
+	certFile, err := os.CreateTemp("", "verify-cert")
 	assert.Nil(t, err)
 	defer os.Remove(certFile.Name())
 
@@ -117,7 +116,7 @@ func Test_verify(t *testing.T) {
 		},
 	}
 
-	crt.Sign(badPriv)
+	crt.Sign(cert.Curve_CURVE25519, badPriv)
 	b, _ = crt.MarshalToPEM()
 	certFile.Truncate(0)
 	certFile.Seek(0, 0)
@@ -129,7 +128,7 @@ func Test_verify(t *testing.T) {
 	assert.EqualError(t, err, "certificate signature did not match")
 
 	// verified cert at path
-	crt.Sign(caPriv)
+	crt.Sign(cert.Curve_CURVE25519, caPriv)
 	b, _ = crt.MarshalToPEM()
 	certFile.Truncate(0)
 	certFile.Seek(0, 0)

cmd/nebula-service/main.go

@@ -13,7 +13,7 @@ import (
 
 // A version string that can be set with
 //
-//     -ldflags "-X main.Build=SOMEVERSION"
+//	-ldflags "-X main.Build=SOMEVERSION"
 //
 // at compile-time.
 var Build string
@@ -59,13 +59,8 @@ func main() {
 	}
 
 	ctrl, err := nebula.Main(c, *configTest, Build, l, nil)
-
-	switch v := err.(type) {
-	case util.ContextualError:
-		v.Log(l)
-		os.Exit(1)
-	case error:
-		l.WithError(err).Error("Failed to start")
+	if err != nil {
+		util.LogWithContextIfNeeded("Failed to start", err, l)
 		os.Exit(1)
 	}
 

cmd/nebula-service/service.go

@@ -49,6 +49,14 @@ func (p *program) Stop(s service.Service) error {
 	return nil
 }
 
+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 == "" {
 		ex, err := os.Executable()
@@ -56,6 +64,9 @@ func doService(configPath *string, configTest *bool, build string, serviceFlag *
 			panic(err)
 		}
 		*configPath = filepath.Dir(ex) + "/config.yaml"
+		if !fileExists(*configPath) {
+			*configPath = filepath.Dir(ex) + "/config.yml"
+		}
 	}
 
 	svcConfig := &service.Config{

cmd/nebula/main.go

@@ -13,7 +13,7 @@ import (
 
 // A version string that can be set with
 //
-//     -ldflags "-X main.Build=SOMEVERSION"
+//	-ldflags "-X main.Build=SOMEVERSION"
 //
 // at compile-time.
 var Build string
@@ -53,18 +53,14 @@ func main() {
 	}
 
 	ctrl, err := nebula.Main(c, *configTest, Build, l, nil)
-
-	switch v := err.(type) {
-	case util.ContextualError:
-		v.Log(l)
-		os.Exit(1)
-	case error:
-		l.WithError(err).Error("Failed to start")
+	if err != nil {
+		util.LogWithContextIfNeeded("Failed to start", err, l)
 		os.Exit(1)
 	}
 
 	if !*configTest {
 		ctrl.Start()
+		notifyReady(l)
 		ctrl.ShutdownBlock()
 	}
 

cmd/nebula/notify_linux.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"net"
+	"os"
+	"time"
+
+	"github.com/sirupsen/logrus"
+)
+
+// SdNotifyReady tells systemd the service is ready and dependent services can now be started
+// https://www.freedesktop.org/software/systemd/man/sd_notify.html
+// https://www.freedesktop.org/software/systemd/man/systemd.service.html
+const SdNotifyReady = "READY=1"
+
+func notifyReady(l *logrus.Logger) {
+	sockName := os.Getenv("NOTIFY_SOCKET")
+	if sockName == "" {
+		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.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.WithError(err).Error("failed to set the write deadline for the systemd notification socket")
+		return
+	}
+
+	if _, err = conn.Write([]byte(SdNotifyReady)); err != nil {
+		l.WithError(err).Error("failed to signal the systemd notification socket")
+		return
+	}
+
+	l.Debugln("notified systemd the service is ready")
+}

cmd/nebula/notify_notlinux.go

@@ -0,0 +1,10 @@
+//go:build !linux
+// +build !linux
+
+package main
+
+import "github.com/sirupsen/logrus"
+
+func notifyReady(_ *logrus.Logger) {
+	// No init service to notify
+}

config/config.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"math"
 	"os"
 	"os/signal"
 	"path/filepath"
@@ -15,7 +15,7 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/imdario/mergo"
+	"dario.cat/mergo"
 	"github.com/sirupsen/logrus"
 	"gopkg.in/yaml.v2"
 )
@@ -121,6 +121,10 @@ func (c *C) HasChanged(k string) bool {
 // CatchHUP will listen for the HUP signal in a go routine and reload all configs found in the
 // original path provided to Load. The old settings are shallow copied for change detection after the reload.
 func (c *C) CatchHUP(ctx context.Context) {
+	if c.path == "" {
+		return
+	}
+
 	ch := make(chan os.Signal, 1)
 	signal.Notify(ch, syscall.SIGHUP)
 
@@ -236,6 +240,15 @@ func (c *C) GetInt(k string, d int) int {
 	return v
 }
 
+// GetUint32 will get the uint32 for k or return the default d if not found or invalid
+func (c *C) GetUint32(k string, d uint32) uint32 {
+	r := c.GetInt(k, int(d))
+	if uint64(r) > uint64(math.MaxUint32) {
+		return d
+	}
+	return uint32(r)
+}
+
 // GetBool will get the bool for k or return the default d if not found or invalid
 func (c *C) GetBool(k string, d bool) bool {
 	r := strings.ToLower(c.GetString(k, fmt.Sprintf("%v", d)))
@@ -348,7 +361,7 @@ func (c *C) parse() error {
 	var m map[interface{}]interface{}
 
 	for _, path := range c.files {
-		b, err := ioutil.ReadFile(path)
+		b, err := os.ReadFile(path)
 		if err != nil {
 			return err
 		}

config/config_test.go

@@ -1,22 +1,24 @@
 package config
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
 	"time"
 
+	"dario.cat/mergo"
 	"github.com/slackhq/nebula/test"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"gopkg.in/yaml.v2"
 )
 
 func TestConfig_Load(t *testing.T) {
 	l := test.NewLogger()
-	dir, err := ioutil.TempDir("", "config-test")
+	dir, err := os.MkdirTemp("", "config-test")
 	// invalid yaml
 	c := NewC(l)
-	ioutil.WriteFile(filepath.Join(dir, "01.yaml"), []byte(" invalid yaml"), 0644)
+	os.WriteFile(filepath.Join(dir, "01.yaml"), []byte(" invalid yaml"), 0644)
 	assert.EqualError(t, c.Load(dir), "yaml: unmarshal errors:\n  line 1: cannot unmarshal !!str `invalid...` into map[interface {}]interface {}")
 
 	// simple multi config merge
@@ -26,8 +28,8 @@ func TestConfig_Load(t *testing.T) {
 
 	assert.Nil(t, err)
 
-	ioutil.WriteFile(filepath.Join(dir, "01.yaml"), []byte("outer:\n  inner: hi"), 0644)
-	ioutil.WriteFile(filepath.Join(dir, "02.yml"), []byte("outer:\n  inner: override\nnew: hi"), 0644)
+	os.WriteFile(filepath.Join(dir, "01.yaml"), []byte("outer:\n  inner: hi"), 0644)
+	os.WriteFile(filepath.Join(dir, "02.yml"), []byte("outer:\n  inner: override\nnew: hi"), 0644)
 	assert.Nil(t, c.Load(dir))
 	expected := map[interface{}]interface{}{
 		"outer": map[interface{}]interface{}{
@@ -117,9 +119,9 @@ func TestConfig_HasChanged(t *testing.T) {
 func TestConfig_ReloadConfig(t *testing.T) {
 	l := test.NewLogger()
 	done := make(chan bool, 1)
-	dir, err := ioutil.TempDir("", "config-test")
+	dir, err := os.MkdirTemp("", "config-test")
 	assert.Nil(t, err)
-	ioutil.WriteFile(filepath.Join(dir, "01.yaml"), []byte("outer:\n  inner: hi"), 0644)
+	os.WriteFile(filepath.Join(dir, "01.yaml"), []byte("outer:\n  inner: hi"), 0644)
 
 	c := NewC(l)
 	assert.Nil(t, c.Load(dir))
@@ -128,7 +130,7 @@ func TestConfig_ReloadConfig(t *testing.T) {
 	assert.False(t, c.HasChanged("outer"))
 	assert.False(t, c.HasChanged(""))
 
-	ioutil.WriteFile(filepath.Join(dir, "01.yaml"), []byte("outer:\n  inner: ho"), 0644)
+	os.WriteFile(filepath.Join(dir, "01.yaml"), []byte("outer:\n  inner: ho"), 0644)
 
 	c.RegisterReloadCallback(func(c *C) {
 		done <- true
@@ -147,3 +149,77 @@ func TestConfig_ReloadConfig(t *testing.T) {
 	}
 
 }
+
+// Ensure mergo merges are done the way we expect.
+// This is needed to test for potential regressions, like:
+// - https://github.com/imdario/mergo/issues/187
+func TestConfig_MergoMerge(t *testing.T) {
+	configs := [][]byte{
+		[]byte(`
+listen:
+  port: 1234
+`),
+		[]byte(`
+firewall:
+  inbound:
+    - port: 443
+      proto: tcp
+      groups:
+        - server
+    - port: 443
+      proto: tcp
+      groups:
+        - webapp
+`),
+		[]byte(`
+listen:
+  host: 0.0.0.0
+  port: 4242
+firewall:
+  outbound:
+    - port: any
+      proto: any
+      host: any
+  inbound:
+    - port: any
+      proto: icmp
+      host: any
+`),
+	}
+
+	var m map[any]any
+
+	// merge the same way config.parse() merges
+	for _, b := range configs {
+		var nm map[any]any
+		err := yaml.Unmarshal(b, &nm)
+		require.NoError(t, err)
+
+		// We need to use WithAppendSlice so that firewall rules in separate
+		// files are appended together
+		err = mergo.Merge(&nm, m, mergo.WithAppendSlice)
+		m = nm
+		require.NoError(t, err)
+	}
+
+	t.Logf("Merged Config: %#v", m)
+	mYaml, err := yaml.Marshal(m)
+	require.NoError(t, err)
+	t.Logf("Merged Config as YAML:\n%s", mYaml)
+
+	// If a bug is present, some items might be replaced instead of merged like we expect
+	expected := map[any]any{
+		"firewall": map[any]any{
+			"inbound": []any{
+				map[any]any{"host": "any", "port": "any", "proto": "icmp"},
+				map[any]any{"groups": []any{"server"}, "port": 443, "proto": "tcp"},
+				map[any]any{"groups": []any{"webapp"}, "port": 443, "proto": "tcp"}},
+			"outbound": []any{
+				map[any]any{"host": "any", "port": "any", "proto": "any"}}},
+		"listen": map[any]any{
+			"host": "0.0.0.0",
+			"port": 4242,
+		},
+	}
+	assert.Equal(t, expected, m)
+}

connection_manager.go

@@ -1,151 +1,153 @@
 package nebula
 
 import (
+	"bytes"
 	"context"
+	"encoding/binary"
+	"fmt"
+	"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"
-	"github.com/slackhq/nebula/iputil"
 )
 
-// TODO: incount and outcount are intended as a shortcut to locking the mutexes for every single packet
-// and something like every 10 packets we could lock, send 10, then unlock for a moment
+type trafficDecision int
+
+const (
+	doNothing      trafficDecision = 0
+	deleteTunnel   trafficDecision = 1 // delete the hostinfo on our side, do not notify the remote
+	closeTunnel    trafficDecision = 2 // delete the hostinfo and notify the remote
+	swapPrimary    trafficDecision = 3
+	migrateRelays  trafficDecision = 4
+	tryRehandshake trafficDecision = 5
+	sendTestPacket trafficDecision = 6
+)
 
 type connectionManager struct {
+	// relayUsed holds which relay localIndexs are in use
+	relayUsed     map[uint32]struct{}
+	relayUsedLock *sync.RWMutex
+
 	hostMap      *HostMap
-	in           map[iputil.VpnIp]struct{}
-	inLock       *sync.RWMutex
-	inCount      int
-	out          map[iputil.VpnIp]struct{}
-	outLock      *sync.RWMutex
-	outCount     int
-	TrafficTimer *SystemTimerWheel
+	trafficTimer *LockingTimerWheel[uint32]
 	intf         *Interface
+	punchy       *Punchy
 
-	pendingDeletion      map[iputil.VpnIp]int
-	pendingDeletionLock  *sync.RWMutex
-	pendingDeletionTimer *SystemTimerWheel
+	// Configuration settings
+	checkInterval           time.Duration
+	pendingDeletionInterval time.Duration
+	inactivityTimeout       atomic.Int64
+	dropInactive            atomic.Bool
 
-	checkInterval           int
-	pendingDeletionInterval int
+	metricsTxPunchy metrics.Counter
 
 	l *logrus.Logger
-	// I wanted to call one matLock
 }
 
-func newConnectionManager(ctx context.Context, l *logrus.Logger, intf *Interface, checkInterval, pendingDeletionInterval int) *connectionManager {
-	nc := &connectionManager{
-		hostMap:                 intf.hostMap,
-		in:                      make(map[iputil.VpnIp]struct{}),
-		inLock:                  &sync.RWMutex{},
-		inCount:                 0,
-		out:                     make(map[iputil.VpnIp]struct{}),
-		outLock:                 &sync.RWMutex{},
-		outCount:                0,
-		TrafficTimer:            NewSystemTimerWheel(time.Millisecond*500, time.Second*60),
-		intf:                    intf,
-		pendingDeletion:         make(map[iputil.VpnIp]int),
-		pendingDeletionLock:     &sync.RWMutex{},
-		pendingDeletionTimer:    NewSystemTimerWheel(time.Millisecond*500, time.Second*60),
-		checkInterval:           checkInterval,
-		pendingDeletionInterval: pendingDeletionInterval,
-		l:                       l,
+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{},
+		metricsTxPunchy: metrics.GetOrRegisterCounter("messages.tx.punchy", nil),
 	}
-	nc.Start(ctx)
-	return nc
+
+	cm.reload(c, true)
+	c.RegisterReloadCallback(func(c *config.C) {
+		cm.reload(c, false)
+	})
+
+	return cm
 }
 
-func (n *connectionManager) In(ip iputil.VpnIp) {
-	n.inLock.RLock()
+func (cm *connectionManager) reload(c *config.C, initial bool) {
+	if initial {
+		cm.checkInterval = time.Duration(c.GetInt("timers.connection_alive_interval", 5)) * time.Second
+		cm.pendingDeletionInterval = time.Duration(c.GetInt("timers.pending_deletion_interval", 10)) * time.Second
+
+		// We want at least a minimum resolution of 500ms per tick so that we can hit these intervals
+		// pretty close to their configured duration.
+		// The inactivity duration is checked each time a hostinfo ticks through so we don't need the wheel to contain it.
+		minDuration := min(time.Millisecond*500, cm.checkInterval, cm.pendingDeletionInterval)
+		maxDuration := max(cm.checkInterval, cm.pendingDeletionInterval)
+		cm.trafficTimer = NewLockingTimerWheel[uint32](minDuration, maxDuration)
+	}
+
+	if initial || c.HasChanged("tunnels.inactivity_timeout") {
+		old := cm.getInactivityTimeout()
+		cm.inactivityTimeout.Store((int64)(c.GetDuration("tunnels.inactivity_timeout", 10*time.Minute)))
+		if !initial {
+			cm.l.WithField("oldDuration", old).
+				WithField("newDuration", cm.getInactivityTimeout()).
+				Info("Inactivity timeout has changed")
+		}
+	}
+
+	if initial || c.HasChanged("tunnels.drop_inactive") {
+		old := cm.dropInactive.Load()
+		cm.dropInactive.Store(c.GetBool("tunnels.drop_inactive", false))
+		if !initial {
+			cm.l.WithField("oldBool", old).
+				WithField("newBool", cm.dropInactive.Load()).
+				Info("Drop inactive setting has changed")
+		}
+	}
+}
+
+func (cm *connectionManager) getInactivityTimeout() time.Duration {
+	return (time.Duration)(cm.inactivityTimeout.Load())
+}
+
+func (cm *connectionManager) In(h *HostInfo) {
+	h.in.Store(true)
+}
+
+func (cm *connectionManager) Out(h *HostInfo) {
+	h.out.Store(true)
+}
+
+func (cm *connectionManager) RelayUsed(localIndex uint32) {
+	cm.relayUsedLock.RLock()
 	// If this already exists, return
-	if _, ok := n.in[ip]; ok {
-		n.inLock.RUnlock()
+	if _, ok := cm.relayUsed[localIndex]; ok {
+		cm.relayUsedLock.RUnlock()
 		return
 	}
-	n.inLock.RUnlock()
-	n.inLock.Lock()
-	n.in[ip] = struct{}{}
-	n.inLock.Unlock()
+	cm.relayUsedLock.RUnlock()
+	cm.relayUsedLock.Lock()
+	cm.relayUsed[localIndex] = struct{}{}
+	cm.relayUsedLock.Unlock()
 }
 
-func (n *connectionManager) Out(ip iputil.VpnIp) {
-	n.outLock.RLock()
-	// If this already exists, return
-	if _, ok := n.out[ip]; ok {
-		n.outLock.RUnlock()
-		return
+// getAndResetTrafficCheck returns if there was any inbound or outbound traffic within the last tick and
+// resets the state for this local index
+func (cm *connectionManager) getAndResetTrafficCheck(h *HostInfo, now time.Time) (bool, bool) {
+	in := h.in.Swap(false)
+	out := h.out.Swap(false)
+	if in || out {
+		h.lastUsed = now
 	}
-	n.outLock.RUnlock()
-	n.outLock.Lock()
-	// double check since we dropped the lock temporarily
-	if _, ok := n.out[ip]; ok {
-		n.outLock.Unlock()
-		return
+	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)
 	}
-	n.out[ip] = struct{}{}
-	n.AddTrafficWatch(ip, n.checkInterval)
-	n.outLock.Unlock()
 }
 
-func (n *connectionManager) CheckIn(vpnIp iputil.VpnIp) bool {
-	n.inLock.RLock()
-	if _, ok := n.in[vpnIp]; ok {
-		n.inLock.RUnlock()
-		return true
-	}
-	n.inLock.RUnlock()
-	return false
-}
-
-func (n *connectionManager) ClearIP(ip iputil.VpnIp) {
-	n.inLock.Lock()
-	n.outLock.Lock()
-	delete(n.in, ip)
-	delete(n.out, ip)
-	n.inLock.Unlock()
-	n.outLock.Unlock()
-}
-
-func (n *connectionManager) ClearPendingDeletion(ip iputil.VpnIp) {
-	n.pendingDeletionLock.Lock()
-	delete(n.pendingDeletion, ip)
-	n.pendingDeletionLock.Unlock()
-}
-
-func (n *connectionManager) AddPendingDeletion(ip iputil.VpnIp) {
-	n.pendingDeletionLock.Lock()
-	if _, ok := n.pendingDeletion[ip]; ok {
-		n.pendingDeletion[ip] += 1
-	} else {
-		n.pendingDeletion[ip] = 0
-	}
-	n.pendingDeletionTimer.Add(ip, time.Second*time.Duration(n.pendingDeletionInterval))
-	n.pendingDeletionLock.Unlock()
-}
-
-func (n *connectionManager) checkPendingDeletion(ip iputil.VpnIp) bool {
-	n.pendingDeletionLock.RLock()
-	if _, ok := n.pendingDeletion[ip]; ok {
-
-		n.pendingDeletionLock.RUnlock()
-		return true
-	}
-	n.pendingDeletionLock.RUnlock()
-	return false
-}
-
-func (n *connectionManager) AddTrafficWatch(vpnIp iputil.VpnIp, seconds int) {
-	n.TrafficTimer.Add(vpnIp, time.Second*time.Duration(seconds))
-}
-
-func (n *connectionManager) Start(ctx context.Context) {
-	go n.Run(ctx)
-}
-
-func (n *connectionManager) Run(ctx context.Context) {
-	clockSource := time.NewTicker(500 * time.Millisecond)
+func (cm *connectionManager) Start(ctx context.Context) {
+	clockSource := time.NewTicker(cm.trafficTimer.t.tickDuration)
 	defer clockSource.Stop()
 
 	p := []byte("")
@@ -156,154 +158,362 @@ func (n *connectionManager) Run(ctx context.Context) {
 		select {
 		case <-ctx.Done():
 			return
+
 		case now := <-clockSource.C:
-			n.HandleMonitorTick(now, p, nb, out)
-			n.HandleDeletionTick(now)
-		}
-	}
-}
+			cm.trafficTimer.Advance(now)
+			for {
+				localIndex, has := cm.trafficTimer.Purge()
+				if !has {
+					break
+				}
 
-func (n *connectionManager) HandleMonitorTick(now time.Time, p, nb, out []byte) {
-	n.TrafficTimer.advance(now)
-	for {
-		ep := n.TrafficTimer.Purge()
-		if ep == nil {
-			break
-		}
-
-		vpnIp := ep.(iputil.VpnIp)
-
-		// Check for traffic coming back in from this host.
-		traf := n.CheckIn(vpnIp)
-
-		hostinfo, err := n.hostMap.QueryVpnIp(vpnIp)
-		if err != nil {
-			n.l.Debugf("Not found in hostmap: %s", vpnIp)
-			n.ClearIP(vpnIp)
-			n.ClearPendingDeletion(vpnIp)
-			continue
-		}
-
-		if n.handleInvalidCertificate(now, vpnIp, hostinfo) {
-			continue
-		}
-
-		// If we saw an incoming packets from this ip and peer's certificate is not
-		// expired, just ignore.
-		if traf {
-			if n.l.Level >= logrus.DebugLevel {
-				n.l.WithField("vpnIp", vpnIp).
-					WithField("tunnelCheck", m{"state": "alive", "method": "passive"}).
-					Debug("Tunnel status")
+				cm.doTrafficCheck(localIndex, p, nb, out, now)
 			}
-			n.ClearIP(vpnIp)
-			n.ClearPendingDeletion(vpnIp)
-			continue
 		}
-
-		hostinfo.logger(n.l).
-			WithField("tunnelCheck", m{"state": "testing", "method": "active"}).
-			Debug("Tunnel status")
-
-		if hostinfo != nil && hostinfo.ConnectionState != nil {
-			// Send a test packet to trigger an authenticated tunnel test, this should suss out any lingering tunnel issues
-			n.intf.SendMessageToVpnIp(header.Test, header.TestRequest, vpnIp, p, nb, out)
-
-		} else {
-			hostinfo.logger(n.l).Debugf("Hostinfo sadness: %s", vpnIp)
-		}
-		n.AddPendingDeletion(vpnIp)
 	}
-
 }
 
-func (n *connectionManager) HandleDeletionTick(now time.Time) {
-	n.pendingDeletionTimer.advance(now)
-	for {
-		ep := n.pendingDeletionTimer.Purge()
-		if ep == nil {
-			break
+func (cm *connectionManager) doTrafficCheck(localIndex uint32, p, nb, out []byte, now time.Time) {
+	decision, hostinfo, primary := cm.makeTrafficDecision(localIndex, now)
+
+	switch decision {
+	case deleteTunnel:
+		if cm.hostMap.DeleteHostInfo(hostinfo) {
+			// Only clearing the lighthouse cache if this is the last hostinfo for this vpn ip in the hostmap
+			cm.intf.lightHouse.DeleteVpnIp(hostinfo.vpnIp)
 		}
 
-		vpnIp := ep.(iputil.VpnIp)
+	case closeTunnel:
+		cm.intf.sendCloseTunnel(hostinfo)
+		cm.intf.closeTunnel(hostinfo)
 
-		hostinfo, err := n.hostMap.QueryVpnIp(vpnIp)
+	case swapPrimary:
+		cm.swapPrimary(hostinfo, primary)
+
+	case migrateRelays:
+		cm.migrateRelayUsed(hostinfo, primary)
+
+	case tryRehandshake:
+		cm.tryRehandshake(hostinfo)
+
+	case sendTestPacket:
+		cm.intf.SendMessageToHostInfo(header.Test, header.TestRequest, hostinfo, p, nb, out)
+	}
+
+	cm.resetRelayTrafficCheck(hostinfo)
+}
+
+func (cm *connectionManager) resetRelayTrafficCheck(hostinfo *HostInfo) {
+	if hostinfo != nil {
+		cm.relayUsedLock.Lock()
+		defer cm.relayUsedLock.Unlock()
+		// No need to migrate any relays, delete usage info now.
+		for _, idx := range hostinfo.relayState.CopyRelayForIdxs() {
+			delete(cm.relayUsed, idx)
+		}
+	}
+}
+
+func (cm *connectionManager) migrateRelayUsed(oldhostinfo, newhostinfo *HostInfo) {
+	relayFor := oldhostinfo.relayState.CopyAllRelayFor()
+
+	for _, r := range relayFor {
+		existing, ok := newhostinfo.relayState.QueryRelayForByIp(r.PeerIp)
+
+		var index uint32
+		var relayFrom netip.Addr
+		var relayTo netip.Addr
+		switch {
+		case ok:
+			switch existing.State {
+			case Established, PeerRequested, Disestablished:
+				// This relay already exists in newhostinfo, then do nothing.
+				continue
+			case Requested:
+				// The relayed connection exists in a Requested state; re-send the request
+				index = existing.LocalIndex
+				switch r.Type {
+				case TerminalType:
+					relayFrom = cm.intf.myVpnNet.Addr()
+					relayTo = existing.PeerIp
+				case ForwardingType:
+					relayFrom = existing.PeerIp
+					relayTo = newhostinfo.vpnIp
+				default:
+					// should never happen
+					panic(fmt.Sprintf("Migrating unknown relay type: %v", r.Type))
+				}
+			}
+		case !ok:
+			cm.relayUsedLock.RLock()
+			if _, relayUsed := cm.relayUsed[r.LocalIndex]; !relayUsed {
+				// The relay hasn't been used; don't migrate it.
+				cm.relayUsedLock.RUnlock()
+				continue
+			}
+			cm.relayUsedLock.RUnlock()
+			// The relay doesn't exist at all; create some relay state and send the request.
+			var err error
+			index, err = AddRelay(cm.l, newhostinfo, cm.hostMap, r.PeerIp, nil, r.Type, Requested)
+			if err != nil {
+				cm.l.WithError(err).Error("failed to migrate relay to new hostinfo")
+				continue
+			}
+			switch r.Type {
+			case TerminalType:
+				relayFrom = cm.intf.myVpnNet.Addr()
+				relayTo = r.PeerIp
+			case ForwardingType:
+				relayFrom = r.PeerIp
+				relayTo = newhostinfo.vpnIp
+			default:
+				// should never happen
+				panic(fmt.Sprintf("Migrating unknown relay type: %v", r.Type))
+			}
+		}
+
+		//TODO: IPV6-WORK
+		relayFromB := relayFrom.As4()
+		relayToB := relayTo.As4()
+
+		// Send a CreateRelayRequest to the peer.
+		req := NebulaControl{
+			Type:                NebulaControl_CreateRelayRequest,
+			InitiatorRelayIndex: index,
+			RelayFromIp:         binary.BigEndian.Uint32(relayFromB[:]),
+			RelayToIp:           binary.BigEndian.Uint32(relayToB[:]),
+		}
+		msg, err := req.Marshal()
 		if err != nil {
-			n.l.Debugf("Not found in hostmap: %s", vpnIp)
-			n.ClearIP(vpnIp)
-			n.ClearPendingDeletion(vpnIp)
-			continue
+			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.WithFields(logrus.Fields{
+				"relayFrom":           req.RelayFromIp,
+				"relayTo":             req.RelayToIp,
+				"initiatorRelayIndex": req.InitiatorRelayIndex,
+				"responderRelayIndex": req.ResponderRelayIndex,
+				"vpnIp":               newhostinfo.vpnIp}).
+				Info("send CreateRelayRequest")
 		}
+	}
+}
 
-		if n.handleInvalidCertificate(now, vpnIp, hostinfo) {
-			continue
-		}
+func (cm *connectionManager) makeTrafficDecision(localIndex uint32, now time.Time) (trafficDecision, *HostInfo, *HostInfo) {
+	// Read lock the main hostmap to order decisions based on tunnels being the primary tunnel
+	cm.hostMap.RLock()
+	defer cm.hostMap.RUnlock()
 
-		// If we saw an incoming packets from this ip and peer's certificate is not
-		// expired, just ignore.
-		traf := n.CheckIn(vpnIp)
-		if traf {
-			n.l.WithField("vpnIp", vpnIp).
-				WithField("tunnelCheck", m{"state": "alive", "method": "active"}).
+	hostinfo := cm.hostMap.Indexes[localIndex]
+	if hostinfo == nil {
+		cm.l.WithField("localIndex", localIndex).Debugln("Not found in hostmap")
+		return doNothing, nil, nil
+	}
+
+	if cm.isInvalidCertificate(now, hostinfo) {
+		return closeTunnel, hostinfo, nil
+	}
+
+	primary := cm.hostMap.Hosts[hostinfo.vpnIp]
+	mainHostInfo := true
+	if primary != nil && primary != hostinfo {
+		mainHostInfo = false
+	}
+
+	// Check for traffic on this hostinfo
+	inTraffic, outTraffic := cm.getAndResetTrafficCheck(hostinfo, now)
+
+	// A hostinfo is determined alive if there is incoming traffic
+	if inTraffic {
+		decision := doNothing
+		if cm.l.Level >= logrus.DebugLevel {
+			hostinfo.logger(cm.l).
+				WithField("tunnelCheck", m{"state": "alive", "method": "passive"}).
 				Debug("Tunnel status")
+		}
+		hostinfo.pendingDeletion.Store(false)
 
-			n.ClearIP(vpnIp)
-			n.ClearPendingDeletion(vpnIp)
-			continue
+		if mainHostInfo {
+			decision = tryRehandshake
+
+		} else {
+			if cm.shouldSwapPrimary(hostinfo, primary) {
+				decision = swapPrimary
+			} else {
+				// migrate the relays to the primary, if in use.
+				decision = migrateRelays
+			}
 		}
 
-		// If it comes around on deletion wheel and hasn't resolved itself, delete
-		if n.checkPendingDeletion(vpnIp) {
-			cn := ""
-			if hostinfo.ConnectionState != nil && hostinfo.ConnectionState.peerCert != nil {
-				cn = hostinfo.ConnectionState.peerCert.Details.Name
-			}
-			hostinfo.logger(n.l).
-				WithField("tunnelCheck", m{"state": "dead", "method": "active"}).
-				WithField("certName", cn).
-				Info("Tunnel status")
+		cm.trafficTimer.Add(hostinfo.localIndexId, cm.checkInterval)
 
-			n.ClearIP(vpnIp)
-			n.ClearPendingDeletion(vpnIp)
-			// TODO: This is only here to let tests work. Should do proper mocking
-			if n.intf.lightHouse != nil {
-				n.intf.lightHouse.DeleteVpnIp(vpnIp)
+		if !outTraffic {
+			// Send a punch packet to keep the NAT state alive
+			cm.sendPunch(hostinfo)
+		}
+
+		return decision, hostinfo, primary
+	}
+
+	if hostinfo.pendingDeletion.Load() {
+		// We have already sent a test packet and nothing was returned, this hostinfo is dead
+		hostinfo.logger(cm.l).
+			WithField("tunnelCheck", m{"state": "dead", "method": "active"}).
+			Info("Tunnel status")
+
+		return deleteTunnel, hostinfo, nil
+	}
+
+	decision := doNothing
+	if hostinfo != nil && hostinfo.ConnectionState != nil && mainHostInfo {
+		if !outTraffic {
+			inactiveFor, isInactive := cm.isInactive(hostinfo, now)
+			if isInactive {
+				// Tunnel is inactive, tear it down
+				hostinfo.logger(cm.l).
+					WithField("inactiveDuration", inactiveFor).
+					WithField("primary", mainHostInfo).
+					Info("Dropping tunnel due to inactivity")
+
+				return closeTunnel, hostinfo, primary
 			}
-			n.hostMap.DeleteHostInfo(hostinfo)
-		} else {
-			n.ClearIP(vpnIp)
-			n.ClearPendingDeletion(vpnIp)
+
+			// 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.sendPunch(hostinfo)
+			cm.trafficTimer.Add(hostinfo.localIndexId, cm.checkInterval)
+			return doNothing, nil, nil
+		}
+
+		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.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.Level >= logrus.DebugLevel {
+			hostinfo.logger(cm.l).Debugf("Hostinfo sadness")
 		}
 	}
+
+	hostinfo.pendingDeletion.Store(true)
+	cm.trafficTimer.Add(hostinfo.localIndexId, cm.pendingDeletionInterval)
+	return decision, hostinfo, nil
 }
 
-// handleInvalidCertificates will destroy a tunnel if pki.disconnect_invalid is true and the certificate is no longer valid
-func (n *connectionManager) handleInvalidCertificate(now time.Time, vpnIp iputil.VpnIp, hostinfo *HostInfo) bool {
-	if !n.intf.disconnectInvalid {
+func (cm *connectionManager) isInactive(hostinfo *HostInfo, now time.Time) (time.Duration, bool) {
+	if cm.dropInactive.Load() == false {
+		// We aren't configured to drop inactive tunnels
+		return 0, false
+	}
+
+	inactiveDuration := now.Sub(hostinfo.lastUsed)
+	if inactiveDuration < cm.getInactivityTimeout() {
+		// It's not considered inactive
+		return inactiveDuration, false
+	}
+
+	// The tunnel is inactive
+	return inactiveDuration, true
+}
+
+func (cm *connectionManager) shouldSwapPrimary(current, primary *HostInfo) bool {
+	// The primary tunnel is the most recent handshake to complete locally and should work entirely fine.
+	// If we are here then we have multiple tunnels for a host pair and neither side believes the same tunnel is primary.
+	// Let's sort this out.
+
+	if current.vpnIp.Compare(cm.intf.myVpnNet.Addr()) < 0 {
+		// Only one side should flip primary because if both flip then we may never resolve to a single tunnel.
+		// vpn ip is static across all tunnels for this host pair so lets use that to determine who is flipping.
+		// The remotes vpn ip is lower than mine. I will not flip.
 		return false
 	}
 
+	certState := cm.intf.pki.GetCertState()
+	return bytes.Equal(current.ConnectionState.myCert.Signature, certState.Certificate.Signature)
+}
+
+func (cm *connectionManager) swapPrimary(current, primary *HostInfo) {
+	cm.hostMap.Lock()
+	// Make sure the primary is still the same after the write lock. This avoids a race with a rehandshake.
+	if cm.hostMap.Hosts[current.vpnIp] == primary {
+		cm.hostMap.unlockedMakePrimary(current)
+	}
+	cm.hostMap.Unlock()
+}
+
+// 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
 	}
 
-	valid, err := remoteCert.Verify(now, n.intf.caPool)
+	valid, err := remoteCert.VerifyWithCache(now, cm.intf.pki.GetCAPool())
 	if valid {
 		return false
 	}
 
+	if !cm.intf.disconnectInvalid.Load() && err != cert.ErrBlockListed {
+		// Block listed certificates should always be disconnected
+		return false
+	}
+
 	fingerprint, _ := remoteCert.Sha256Sum()
-	n.l.WithField("vpnIp", vpnIp).WithError(err).
-		WithField("certName", remoteCert.Details.Name).
+	hostinfo.logger(cm.l).WithError(err).
 		WithField("fingerprint", fingerprint).
 		Info("Remote certificate is no longer valid, tearing down the tunnel")
 
-	// Inform the remote and close the tunnel locally
-	n.intf.sendCloseTunnel(hostinfo)
-	n.intf.closeTunnel(hostinfo)
-
-	n.ClearIP(vpnIp)
-	n.ClearPendingDeletion(vpnIp)
 	return true
 }
+
+func (cm *connectionManager) sendPunch(hostinfo *HostInfo) {
+	if !cm.punchy.GetPunch() {
+		// Punching is disabled
+		return
+	}
+
+	if cm.intf.lightHouse.IsLighthouseIP(hostinfo.vpnIp) {
+		// 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) {
+	certState := cm.intf.pki.GetCertState()
+	if bytes.Equal(hostinfo.ConnectionState.myCert.Signature, certState.Certificate.Signature) {
+		return
+	}
+
+	cm.l.WithField("vpnIp", hostinfo.vpnIp).
+		WithField("reason", "local certificate is not current").
+		Info("Re-handshaking with remote")
+
+	cm.intf.handshakeManager.StartHandshake(hostinfo.vpnIp, nil)
+}

connection_manager_test.go

@@ -1,162 +1,300 @@
 package nebula
 
 import (
-	"context"
 	"crypto/ed25519"
 	"crypto/rand"
 	"net"
+	"net/netip"
 	"testing"
 	"time"
 
 	"github.com/flynn/noise"
 	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/iputil"
+	"github.com/slackhq/nebula/config"
 	"github.com/slackhq/nebula/test"
 	"github.com/slackhq/nebula/udp"
 	"github.com/stretchr/testify/assert"
 )
 
-var vpnIp iputil.VpnIp
+func newTestLighthouse() *LightHouse {
+	lh := &LightHouse{
+		l:         test.NewLogger(),
+		addrMap:   map[netip.Addr]*RemoteList{},
+		queryChan: make(chan netip.Addr, 10),
+	}
+	lighthouses := map[netip.Addr]struct{}{}
+	staticList := map[netip.Addr]struct{}{}
+
+	lh.lighthouses.Store(&lighthouses)
+	lh.staticList.Store(&staticList)
+
+	return lh
+}
 
 func Test_NewConnectionManagerTest(t *testing.T) {
 	l := test.NewLogger()
 	//_, tuncidr, _ := net.ParseCIDR("1.1.1.1/24")
-	_, vpncidr, _ := net.ParseCIDR("172.1.1.1/24")
-	_, localrange, _ := net.ParseCIDR("10.1.1.1/24")
-	vpnIp = iputil.Ip2VpnIp(net.ParseIP("172.1.1.2"))
-	preferredRanges := []*net.IPNet{localrange}
+	vpncidr := netip.MustParsePrefix("172.1.1.1/24")
+	localrange := netip.MustParsePrefix("10.1.1.1/24")
+	vpnIp := netip.MustParseAddr("172.1.1.2")
+	preferredRanges := []netip.Prefix{localrange}
 
 	// Very incomplete mock objects
-	hostMap := NewHostMap(l, "test", vpncidr, preferredRanges)
+	hostMap := newHostMap(l, vpncidr)
+	hostMap.preferredRanges.Store(&preferredRanges)
+
 	cs := &CertState{
-		rawCertificate:      []byte{},
-		privateKey:          []byte{},
-		certificate:         &cert.NebulaCertificate{},
-		rawCertificateNoKey: []byte{},
+		RawCertificate:      []byte{},
+		PrivateKey:          []byte{},
+		Certificate:         &cert.NebulaCertificate{},
+		RawCertificateNoKey: []byte{},
 	}
 
-	lh := &LightHouse{l: l, atomicStaticList: make(map[iputil.VpnIp]struct{}), atomicLighthouses: make(map[iputil.VpnIp]struct{})}
+	lh := newTestLighthouse()
 	ifce := &Interface{
 		hostMap:          hostMap,
 		inside:           &test.NoopTun{},
-		outside:          &udp.Conn{},
-		certState:        cs,
+		outside:          &udp.NoopConn{},
 		firewall:         &Firewall{},
 		lightHouse:       lh,
-		handshakeManager: NewHandshakeManager(l, vpncidr, preferredRanges, hostMap, lh, &udp.Conn{}, defaultHandshakeConfig),
+		pki:              &PKI{},
+		handshakeManager: NewHandshakeManager(l, hostMap, lh, &udp.NoopConn{}, defaultHandshakeConfig),
 		l:                l,
 	}
-	now := time.Now()
+	ifce.pki.cs.Store(cs)
 
 	// Create manager
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	nc := newConnectionManager(ctx, l, ifce, 5, 10)
+	conf := config.NewC(l)
+	punchy := NewPunchyFromConfig(l, conf)
+	nc := newConnectionManagerFromConfig(l, conf, hostMap, punchy)
+	nc.intf = ifce
 	p := []byte("")
 	nb := make([]byte, 12, 12)
 	out := make([]byte, mtu)
-	nc.HandleMonitorTick(now, p, nb, out)
+
 	// Add an ip we have established a connection w/ to hostmap
-	hostinfo, _ := nc.hostMap.AddVpnIp(vpnIp, nil)
-	hostinfo.ConnectionState = &ConnectionState{
-		certState: cs,
-		H:         &noise.HandshakeState{},
+	hostinfo := &HostInfo{
+		vpnIp:         vpnIp,
+		localIndexId:  1099,
+		remoteIndexId: 9901,
 	}
+	hostinfo.ConnectionState = &ConnectionState{
+		myCert: &cert.NebulaCertificate{},
+		H:      &noise.HandshakeState{},
+	}
+	nc.hostMap.unlockedAddHostInfo(hostinfo, ifce)
 
 	// We saw traffic out to vpnIp
-	nc.Out(vpnIp)
-	assert.NotContains(t, nc.pendingDeletion, vpnIp)
-	assert.Contains(t, nc.hostMap.Hosts, vpnIp)
-	// Move ahead 5s. Nothing should happen
-	next_tick := now.Add(5 * time.Second)
-	nc.HandleMonitorTick(next_tick, p, nb, out)
-	nc.HandleDeletionTick(next_tick)
-	// Move ahead 6s. We haven't heard back
-	next_tick = now.Add(6 * time.Second)
-	nc.HandleMonitorTick(next_tick, p, nb, out)
-	nc.HandleDeletionTick(next_tick)
-	// This host should now be up for deletion
-	assert.Contains(t, nc.pendingDeletion, vpnIp)
-	assert.Contains(t, nc.hostMap.Hosts, vpnIp)
-	// Move ahead some more
-	next_tick = now.Add(45 * time.Second)
-	nc.HandleMonitorTick(next_tick, p, nb, out)
-	nc.HandleDeletionTick(next_tick)
-	// The host should be evicted
-	assert.NotContains(t, nc.pendingDeletion, vpnIp)
-	assert.NotContains(t, nc.hostMap.Hosts, vpnIp)
+	nc.Out(hostinfo)
+	nc.In(hostinfo)
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.Contains(t, nc.hostMap.Hosts, hostinfo.vpnIp)
+	assert.Contains(t, nc.hostMap.Indexes, hostinfo.localIndexId)
+	assert.True(t, hostinfo.out.Load())
+	assert.True(t, hostinfo.in.Load())
 
+	// Do a traffic check tick, should not be pending deletion but should not have any in/out packets recorded
+	nc.doTrafficCheck(hostinfo.localIndexId, p, nb, out, time.Now())
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+
+	// Do another traffic check tick, this host should be pending deletion now
+	nc.Out(hostinfo)
+	assert.True(t, hostinfo.out.Load())
+	nc.doTrafficCheck(hostinfo.localIndexId, p, nb, out, time.Now())
+	assert.True(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+	assert.Contains(t, nc.hostMap.Indexes, hostinfo.localIndexId)
+	assert.Contains(t, nc.hostMap.Hosts, hostinfo.vpnIp)
+
+	// Do a final traffic check tick, the host should now be removed
+	nc.doTrafficCheck(hostinfo.localIndexId, p, nb, out, time.Now())
+	assert.NotContains(t, nc.hostMap.Hosts, hostinfo.vpnIp)
+	assert.NotContains(t, nc.hostMap.Indexes, hostinfo.localIndexId)
 }
 
 func Test_NewConnectionManagerTest2(t *testing.T) {
 	l := test.NewLogger()
 	//_, tuncidr, _ := net.ParseCIDR("1.1.1.1/24")
-	_, vpncidr, _ := net.ParseCIDR("172.1.1.1/24")
-	_, localrange, _ := net.ParseCIDR("10.1.1.1/24")
-	preferredRanges := []*net.IPNet{localrange}
+	vpncidr := netip.MustParsePrefix("172.1.1.1/24")
+	localrange := netip.MustParsePrefix("10.1.1.1/24")
+	vpnIp := netip.MustParseAddr("172.1.1.2")
+	preferredRanges := []netip.Prefix{localrange}
 
 	// Very incomplete mock objects
-	hostMap := NewHostMap(l, "test", vpncidr, preferredRanges)
+	hostMap := newHostMap(l, vpncidr)
+	hostMap.preferredRanges.Store(&preferredRanges)
+
 	cs := &CertState{
-		rawCertificate:      []byte{},
-		privateKey:          []byte{},
-		certificate:         &cert.NebulaCertificate{},
-		rawCertificateNoKey: []byte{},
+		RawCertificate:      []byte{},
+		PrivateKey:          []byte{},
+		Certificate:         &cert.NebulaCertificate{},
+		RawCertificateNoKey: []byte{},
 	}
 
-	lh := &LightHouse{l: l, atomicStaticList: make(map[iputil.VpnIp]struct{}), atomicLighthouses: make(map[iputil.VpnIp]struct{})}
+	lh := newTestLighthouse()
 	ifce := &Interface{
 		hostMap:          hostMap,
 		inside:           &test.NoopTun{},
-		outside:          &udp.Conn{},
-		certState:        cs,
+		outside:          &udp.NoopConn{},
 		firewall:         &Firewall{},
 		lightHouse:       lh,
-		handshakeManager: NewHandshakeManager(l, vpncidr, preferredRanges, hostMap, lh, &udp.Conn{}, defaultHandshakeConfig),
+		pki:              &PKI{},
+		handshakeManager: NewHandshakeManager(l, hostMap, lh, &udp.NoopConn{}, defaultHandshakeConfig),
 		l:                l,
 	}
-	now := time.Now()
+	ifce.pki.cs.Store(cs)
 
 	// Create manager
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	nc := newConnectionManager(ctx, l, ifce, 5, 10)
+	conf := config.NewC(l)
+	punchy := NewPunchyFromConfig(l, conf)
+	nc := newConnectionManagerFromConfig(l, conf, hostMap, punchy)
+	nc.intf = ifce
 	p := []byte("")
 	nb := make([]byte, 12, 12)
 	out := make([]byte, mtu)
-	nc.HandleMonitorTick(now, p, nb, out)
+
 	// Add an ip we have established a connection w/ to hostmap
-	hostinfo, _ := nc.hostMap.AddVpnIp(vpnIp, nil)
-	hostinfo.ConnectionState = &ConnectionState{
-		certState: cs,
-		H:         &noise.HandshakeState{},
+	hostinfo := &HostInfo{
+		vpnIp:         vpnIp,
+		localIndexId:  1099,
+		remoteIndexId: 9901,
 	}
+	hostinfo.ConnectionState = &ConnectionState{
+		myCert: &cert.NebulaCertificate{},
+		H:      &noise.HandshakeState{},
+	}
+	nc.hostMap.unlockedAddHostInfo(hostinfo, ifce)
 
 	// We saw traffic out to vpnIp
-	nc.Out(vpnIp)
-	assert.NotContains(t, nc.pendingDeletion, vpnIp)
-	assert.Contains(t, nc.hostMap.Hosts, vpnIp)
-	// Move ahead 5s. Nothing should happen
-	next_tick := now.Add(5 * time.Second)
-	nc.HandleMonitorTick(next_tick, p, nb, out)
-	nc.HandleDeletionTick(next_tick)
-	// Move ahead 6s. We haven't heard back
-	next_tick = now.Add(6 * time.Second)
-	nc.HandleMonitorTick(next_tick, p, nb, out)
-	nc.HandleDeletionTick(next_tick)
-	// This host should now be up for deletion
-	assert.Contains(t, nc.pendingDeletion, vpnIp)
-	assert.Contains(t, nc.hostMap.Hosts, vpnIp)
-	// We heard back this time
-	nc.In(vpnIp)
-	// Move ahead some more
-	next_tick = now.Add(45 * time.Second)
-	nc.HandleMonitorTick(next_tick, p, nb, out)
-	nc.HandleDeletionTick(next_tick)
-	// The host should be evicted
-	assert.NotContains(t, nc.pendingDeletion, vpnIp)
-	assert.Contains(t, nc.hostMap.Hosts, vpnIp)
+	nc.Out(hostinfo)
+	nc.In(hostinfo)
+	assert.True(t, hostinfo.in.Load())
+	assert.True(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.Contains(t, nc.hostMap.Hosts, hostinfo.vpnIp)
+	assert.Contains(t, nc.hostMap.Indexes, hostinfo.localIndexId)
 
+	// Do a traffic check tick, should not be pending deletion but should not have any in/out packets recorded
+	nc.doTrafficCheck(hostinfo.localIndexId, p, nb, out, time.Now())
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+
+	// Do another traffic check tick, this host should be pending deletion now
+	nc.Out(hostinfo)
+	nc.doTrafficCheck(hostinfo.localIndexId, p, nb, out, time.Now())
+	assert.True(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+	assert.Contains(t, nc.hostMap.Indexes, hostinfo.localIndexId)
+	assert.Contains(t, nc.hostMap.Hosts, hostinfo.vpnIp)
+
+	// We saw traffic, should no longer be pending deletion
+	nc.In(hostinfo)
+	nc.doTrafficCheck(hostinfo.localIndexId, p, nb, out, time.Now())
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+	assert.Contains(t, nc.hostMap.Indexes, hostinfo.localIndexId)
+	assert.Contains(t, nc.hostMap.Hosts, hostinfo.vpnIp)
+}
+
+func Test_NewConnectionManager_DisconnectInactive(t *testing.T) {
+	l := test.NewLogger()
+	vpncidr := netip.MustParsePrefix("172.1.1.1/24")
+	localrange := netip.MustParsePrefix("10.1.1.1/24")
+	vpnIp := netip.MustParseAddr("172.1.1.2")
+	preferredRanges := []netip.Prefix{localrange}
+
+	// Very incomplete mock objects
+	hostMap := newHostMap(l, vpncidr)
+	hostMap.preferredRanges.Store(&preferredRanges)
+
+	cs := &CertState{
+		RawCertificate:      []byte{},
+		PrivateKey:          []byte{},
+		Certificate:         &cert.NebulaCertificate{},
+		RawCertificateNoKey: []byte{},
+	}
+
+	lh := newTestLighthouse()
+	ifce := &Interface{
+		hostMap:          hostMap,
+		inside:           &test.NoopTun{},
+		outside:          &udp.NoopConn{},
+		firewall:         &Firewall{},
+		lightHouse:       lh,
+		pki:              &PKI{},
+		handshakeManager: NewHandshakeManager(l, hostMap, lh, &udp.NoopConn{}, defaultHandshakeConfig),
+		l:                l,
+	}
+	ifce.pki.cs.Store(cs)
+
+	// Create manager
+	conf := config.NewC(l)
+	conf.Settings["tunnels"] = map[interface{}]interface{}{
+		"drop_inactive": true,
+	}
+	punchy := NewPunchyFromConfig(l, conf)
+	nc := newConnectionManagerFromConfig(l, conf, hostMap, punchy)
+	assert.True(t, nc.dropInactive.Load())
+	nc.intf = ifce
+
+	// Add an ip we have established a connection w/ to hostmap
+	hostinfo := &HostInfo{
+		vpnIp:         vpnIp,
+		localIndexId:  1099,
+		remoteIndexId: 9901,
+	}
+	hostinfo.ConnectionState = &ConnectionState{
+		myCert: &cert.NebulaCertificate{},
+		H:      &noise.HandshakeState{},
+	}
+	nc.hostMap.unlockedAddHostInfo(hostinfo, ifce)
+
+	// Do a traffic check tick, in and out should be cleared but should not be pending deletion
+	nc.Out(hostinfo)
+	nc.In(hostinfo)
+	assert.True(t, hostinfo.out.Load())
+	assert.True(t, hostinfo.in.Load())
+
+	now := time.Now()
+	decision, _, _ := nc.makeTrafficDecision(hostinfo.localIndexId, now)
+	assert.Equal(t, tryRehandshake, decision)
+	assert.Equal(t, now, hostinfo.lastUsed)
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+
+	decision, _, _ = nc.makeTrafficDecision(hostinfo.localIndexId, now.Add(time.Second*5))
+	assert.Equal(t, doNothing, decision)
+	assert.Equal(t, now, hostinfo.lastUsed)
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+
+	// Do another traffic check tick, should still not be pending deletion
+	decision, _, _ = nc.makeTrafficDecision(hostinfo.localIndexId, now.Add(time.Second*10))
+	assert.Equal(t, doNothing, decision)
+	assert.Equal(t, now, hostinfo.lastUsed)
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+	assert.Contains(t, nc.hostMap.Indexes, hostinfo.localIndexId)
+	assert.Contains(t, nc.hostMap.Hosts, hostinfo.vpnIp)
+
+	// Finally advance beyond the inactivity timeout
+	decision, _, _ = nc.makeTrafficDecision(hostinfo.localIndexId, now.Add(time.Minute*10))
+	assert.Equal(t, closeTunnel, decision)
+	assert.Equal(t, now, hostinfo.lastUsed)
+	assert.False(t, hostinfo.pendingDeletion.Load())
+	assert.False(t, hostinfo.out.Load())
+	assert.False(t, hostinfo.in.Load())
+	assert.Contains(t, nc.hostMap.Indexes, hostinfo.localIndexId)
+	assert.Contains(t, nc.hostMap.Hosts, hostinfo.vpnIp)
 }
 
 // Check if we can disconnect the peer.
@@ -169,10 +307,12 @@ func Test_NewConnectionManagerTest_DisconnectInvalid(t *testing.T) {
 		IP:   net.IPv4(172, 1, 1, 2),
 		Mask: net.IPMask{255, 255, 255, 0},
 	}
-	_, vpncidr, _ := net.ParseCIDR("172.1.1.1/24")
-	_, localrange, _ := net.ParseCIDR("10.1.1.1/24")
-	preferredRanges := []*net.IPNet{localrange}
-	hostMap := NewHostMap(l, "test", vpncidr, preferredRanges)
+	vpncidr := netip.MustParsePrefix("172.1.1.1/24")
+	localrange := netip.MustParsePrefix("10.1.1.1/24")
+	vpnIp := netip.MustParseAddr("172.1.1.2")
+	preferredRanges := []netip.Prefix{localrange}
+	hostMap := newHostMap(l, vpncidr)
+	hostMap.preferredRanges.Store(&preferredRanges)
 
 	// Generate keys for CA and peer's cert.
 	pubCA, privCA, _ := ed25519.GenerateKey(rand.Reader)
@@ -185,7 +325,8 @@ func Test_NewConnectionManagerTest_DisconnectInvalid(t *testing.T) {
 			PublicKey: pubCA,
 		},
 	}
-	caCert.Sign(privCA)
+
+	assert.NoError(t, caCert.Sign(cert.Curve_CURVE25519, privCA))
 	ncp := &cert.NebulaCAPool{
 		CAs: cert.NewCAPool().CAs,
 	}
@@ -204,52 +345,58 @@ func Test_NewConnectionManagerTest_DisconnectInvalid(t *testing.T) {
 			Issuer:    "ca",
 		},
 	}
-	peerCert.Sign(privCA)
+	assert.NoError(t, peerCert.Sign(cert.Curve_CURVE25519, privCA))
 
 	cs := &CertState{
-		rawCertificate:      []byte{},
-		privateKey:          []byte{},
-		certificate:         &cert.NebulaCertificate{},
-		rawCertificateNoKey: []byte{},
+		RawCertificate:      []byte{},
+		PrivateKey:          []byte{},
+		Certificate:         &cert.NebulaCertificate{},
+		RawCertificateNoKey: []byte{},
 	}
 
-	lh := &LightHouse{l: l, atomicStaticList: make(map[iputil.VpnIp]struct{}), atomicLighthouses: make(map[iputil.VpnIp]struct{})}
+	lh := newTestLighthouse()
 	ifce := &Interface{
-		hostMap:           hostMap,
-		inside:            &test.NoopTun{},
-		outside:           &udp.Conn{},
-		certState:         cs,
-		firewall:          &Firewall{},
-		lightHouse:        lh,
-		handshakeManager:  NewHandshakeManager(l, vpncidr, preferredRanges, hostMap, lh, &udp.Conn{}, defaultHandshakeConfig),
-		l:                 l,
-		disconnectInvalid: true,
-		caPool:            ncp,
+		hostMap:          hostMap,
+		inside:           &test.NoopTun{},
+		outside:          &udp.NoopConn{},
+		firewall:         &Firewall{},
+		lightHouse:       lh,
+		handshakeManager: NewHandshakeManager(l, hostMap, lh, &udp.NoopConn{}, defaultHandshakeConfig),
+		l:                l,
+		pki:              &PKI{},
 	}
+	ifce.pki.cs.Store(cs)
+	ifce.pki.caPool.Store(ncp)
+	ifce.disconnectInvalid.Store(true)
 
 	// Create manager
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	nc := newConnectionManager(ctx, l, ifce, 5, 10)
+	conf := config.NewC(l)
+	punchy := NewPunchyFromConfig(l, conf)
+	nc := newConnectionManagerFromConfig(l, conf, hostMap, punchy)
+	nc.intf = ifce
 	ifce.connectionManager = nc
-	hostinfo, _ := nc.hostMap.AddVpnIp(vpnIp, nil)
-	hostinfo.ConnectionState = &ConnectionState{
-		certState: cs,
-		peerCert:  &peerCert,
-		H:         &noise.HandshakeState{},
+
+	hostinfo := &HostInfo{
+		vpnIp: vpnIp,
+		ConnectionState: &ConnectionState{
+			myCert:   &cert.NebulaCertificate{},
+			peerCert: &peerCert,
+			H:        &noise.HandshakeState{},
+		},
 	}
+	nc.hostMap.unlockedAddHostInfo(hostinfo, ifce)
 
 	// Move ahead 45s.
 	// Check if to disconnect with invalid certificate.
 	// Should be alive.
 	nextTick := now.Add(45 * time.Second)
-	destroyed := nc.handleInvalidCertificate(nextTick, vpnIp, hostinfo)
-	assert.False(t, destroyed)
+	invalid := nc.isInvalidCertificate(nextTick, hostinfo)
+	assert.False(t, invalid)
 
 	// Move ahead 61s.
 	// Check if to disconnect with invalid certificate.
 	// Should be disconnected.
 	nextTick = now.Add(61 * time.Second)
-	destroyed = nc.handleInvalidCertificate(nextTick, vpnIp, hostinfo)
-	assert.True(t, destroyed)
+	invalid = nc.isInvalidCertificate(nextTick, hostinfo)
+	assert.True(t, invalid)
 }

connection_state.go

@@ -9,32 +9,43 @@ import (
 	"github.com/flynn/noise"
 	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/cert"
+	"github.com/slackhq/nebula/noiseutil"
 )
 
 const ReplayWindow = 1024
 
 type ConnectionState struct {
-	eKey                 *NebulaCipherState
-	dKey                 *NebulaCipherState
-	H                    *noise.HandshakeState
-	certState            *CertState
-	peerCert             *cert.NebulaCertificate
-	initiator            bool
-	atomicMessageCounter uint64
-	window               *Bits
-	queueLock            sync.Mutex
-	writeLock            sync.Mutex
-	ready                bool
+	eKey           *NebulaCipherState
+	dKey           *NebulaCipherState
+	H              *noise.HandshakeState
+	myCert         *cert.NebulaCertificate
+	peerCert       *cert.NebulaCertificate
+	initiator      bool
+	messageCounter atomic.Uint64
+	window         *Bits
+	writeLock      sync.Mutex
 }
 
-func (f *Interface) newConnectionState(l *logrus.Logger, initiator bool, pattern noise.HandshakePattern, psk []byte, pskStage int) *ConnectionState {
-	cs := noise.NewCipherSuite(noise.DH25519, noise.CipherAESGCM, noise.HashSHA256)
-	if f.cipher == "chachapoly" {
-		cs = noise.NewCipherSuite(noise.DH25519, noise.CipherChaChaPoly, noise.HashSHA256)
+func NewConnectionState(l *logrus.Logger, cipher string, certState *CertState, initiator bool, pattern noise.HandshakePattern, psk []byte, pskStage int) *ConnectionState {
+	var dhFunc noise.DHFunc
+	switch certState.Certificate.Details.Curve {
+	case cert.Curve_CURVE25519:
+		dhFunc = noise.DH25519
+	case cert.Curve_P256:
+		dhFunc = noiseutil.DHP256
+	default:
+		l.Errorf("invalid curve: %s", certState.Certificate.Details.Curve)
+		return nil
 	}
 
-	curCertState := f.certState
-	static := noise.DHKey{Private: curCertState.privateKey, Public: curCertState.publicKey}
+	var cs noise.CipherSuite
+	if cipher == "chachapoly" {
+		cs = noise.NewCipherSuite(dhFunc, noise.CipherChaChaPoly, noise.HashSHA256)
+	} else {
+		cs = noise.NewCipherSuite(dhFunc, noiseutil.CipherAESGCM, noise.HashSHA256)
+	}
+
+	static := noise.DHKey{Private: certState.PrivateKey, Public: certState.PublicKey}
 
 	b := NewBits(ReplayWindow)
 	// Clear out bit 0, we never transmit it and we don't want it showing as packet loss
@@ -59,9 +70,10 @@ func (f *Interface) newConnectionState(l *logrus.Logger, initiator bool, pattern
 		H:         hs,
 		initiator: initiator,
 		window:    b,
-		ready:     false,
-		certState: curCertState,
+		myCert:    certState.Certificate,
 	}
+	// always start the counter from 2, as packet 1 and packet 2 are handshake packets.
+	ci.messageCounter.Add(2)
 
 	return ci
 }
@@ -70,7 +82,6 @@ func (cs *ConnectionState) MarshalJSON() ([]byte, error) {
 	return json.Marshal(m{
 		"certificate":     cs.peerCert,
 		"initiator":       cs.initiator,
-		"message_counter": atomic.LoadUint64(&cs.atomicMessageCounter),
-		"ready":           cs.ready,
+		"message_counter": cs.messageCounter.Load(),
 	})
 }

control.go

@@ -2,42 +2,51 @@ package nebula
 
 import (
 	"context"
-	"net"
+	"net/netip"
 	"os"
 	"os/signal"
-	"sync/atomic"
 	"syscall"
 
 	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/header"
-	"github.com/slackhq/nebula/iputil"
-	"github.com/slackhq/nebula/udp"
+	"github.com/slackhq/nebula/overlay"
 )
 
 // 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
 
+type controlEach func(h *HostInfo)
+
+type controlHostLister interface {
+	QueryVpnIp(vpnIp netip.Addr) *HostInfo
+	ForEachIndex(each controlEach)
+	ForEachVpnIp(each controlEach)
+	GetPreferredRanges() []netip.Prefix
+}
+
 type Control struct {
-	f          *Interface
-	l          *logrus.Logger
-	cancel     context.CancelFunc
-	sshStart   func()
-	statsStart func()
-	dnsStart   func()
+	f                      *Interface
+	l                      *logrus.Logger
+	ctx                    context.Context
+	cancel                 context.CancelFunc
+	sshStart               func()
+	statsStart             func()
+	dnsStart               func()
+	lighthouseStart        func()
+	connectionManagerStart func(context.Context)
 }
 
 type ControlHostInfo struct {
-	VpnIp                  net.IP                  `json:"vpnIp"`
+	VpnIp                  netip.Addr              `json:"vpnIp"`
 	LocalIndex             uint32                  `json:"localIndex"`
 	RemoteIndex            uint32                  `json:"remoteIndex"`
-	RemoteAddrs            []*udp.Addr             `json:"remoteAddrs"`
-	CachedPackets          int                     `json:"cachedPackets"`
+	RemoteAddrs            []netip.AddrPort        `json:"remoteAddrs"`
 	Cert                   *cert.NebulaCertificate `json:"cert"`
 	MessageCounter         uint64                  `json:"messageCounter"`
-	CurrentRemote          *udp.Addr               `json:"currentRemote"`
-	CurrentRelaysToMe      []iputil.VpnIp          `json:"currentRelaysToMe"`
-	CurrentRelaysThroughMe []iputil.VpnIp          `json:"currentRelaysThroughMe"`
+	CurrentRemote          netip.AddrPort          `json:"currentRemote"`
+	CurrentRelaysToMe      []netip.Addr            `json:"currentRelaysToMe"`
+	CurrentRelaysThroughMe []netip.Addr            `json:"currentRelaysThroughMe"`
 }
 
 // Start actually runs nebula, this is a nonblocking call. To block use Control.ShutdownBlock()
@@ -55,14 +64,24 @@ func (c *Control) Start() {
 	if c.dnsStart != nil {
 		go c.dnsStart()
 	}
+	if c.connectionManagerStart != nil {
+		go c.connectionManagerStart(c.ctx)
+	}
+	if c.lighthouseStart != nil {
+		c.lighthouseStart()
+	}
 
 	// Start reading packets.
 	c.f.run()
 }
 
-// Stop signals nebula to shutdown, returns after the shutdown is complete
+func (c *Control) Context() context.Context {
+	return c.ctx
+}
+
+// Stop signals nebula to shutdown and close all tunnels, returns after the shutdown is complete
 func (c *Control) Stop() {
-	// Stop the handshakeManager (and other serivces), to prevent new tunnels from
+	// Stop the handshakeManager (and other services), to prevent new tunnels from
 	// being created while we're shutting them all down.
 	c.cancel()
 
@@ -75,7 +94,7 @@ func (c *Control) Stop() {
 
 // ShutdownBlock will listen for and block on term and interrupt signals, calling Control.Stop() once signalled
 func (c *Control) ShutdownBlock() {
-	sigChan := make(chan os.Signal)
+	sigChan := make(chan os.Signal, 1)
 	signal.Notify(sigChan, syscall.SIGTERM)
 	signal.Notify(sigChan, syscall.SIGINT)
 
@@ -90,55 +109,103 @@ func (c *Control) RebindUDPServer() {
 	_ = c.f.outside.Rebind()
 
 	// Trigger a lighthouse update, useful for mobile clients that should have an update interval of 0
-	c.f.lightHouse.SendUpdate(c.f)
+	c.f.lightHouse.SendUpdate()
 
 	// Let the main interface know that we rebound so that underlying tunnels know to trigger punches from their remotes
 	c.f.rebindCount++
 }
 
-// ListHostmap returns details about the actual or pending (handshaking) hostmap
-func (c *Control) ListHostmap(pendingMap bool) []ControlHostInfo {
+// ListHostmapHosts returns details about the actual or pending (handshaking) hostmap by vpn ip
+func (c *Control) ListHostmapHosts(pendingMap bool) []ControlHostInfo {
 	if pendingMap {
-		return listHostMap(c.f.handshakeManager.pendingHostMap)
+		return listHostMapHosts(c.f.handshakeManager)
 	} else {
-		return listHostMap(c.f.hostMap)
+		return listHostMapHosts(c.f.hostMap)
 	}
 }
 
-// GetHostInfoByVpnIp returns a single tunnels hostInfo, or nil if not found
-func (c *Control) GetHostInfoByVpnIp(vpnIp iputil.VpnIp, pending bool) *ControlHostInfo {
-	var hm *HostMap
-	if pending {
-		hm = c.f.handshakeManager.pendingHostMap
+// ListHostmapIndexes returns details about the actual or pending (handshaking) hostmap by local index id
+func (c *Control) ListHostmapIndexes(pendingMap bool) []ControlHostInfo {
+	if pendingMap {
+		return listHostMapIndexes(c.f.handshakeManager)
 	} else {
-		hm = c.f.hostMap
+		return listHostMapIndexes(c.f.hostMap)
+	}
+}
+
+// GetCertByVpnIp returns the authenticated certificate of the given vpn IP, or nil if not found
+func (c *Control) GetCertByVpnIp(vpnIp netip.Addr) *cert.NebulaCertificate {
+	if c.f.myVpnNet.Addr() == vpnIp {
+		return c.f.pki.GetCertState().Certificate
+	}
+	hi := c.f.hostMap.QueryVpnIp(vpnIp)
+	if hi == nil {
+		return nil
+	}
+	return hi.GetCert()
+}
+
+// CreateTunnel creates a new tunnel to the given vpn ip.
+func (c *Control) CreateTunnel(vpnIp netip.Addr) {
+	c.f.handshakeManager.StartHandshake(vpnIp, nil)
+}
+
+// PrintTunnel creates a new tunnel to the given vpn ip.
+func (c *Control) PrintTunnel(vpnIp netip.Addr) *ControlHostInfo {
+	hi := c.f.hostMap.QueryVpnIp(vpnIp)
+	if hi == nil {
+		return nil
+	}
+	chi := copyHostInfo(hi, c.f.hostMap.GetPreferredRanges())
+	return &chi
+}
+
+// QueryLighthouse queries the lighthouse.
+func (c *Control) QueryLighthouse(vpnIp netip.Addr) *CacheMap {
+	hi := c.f.lightHouse.Query(vpnIp)
+	if hi == nil {
+		return nil
+	}
+	return hi.CopyCache()
+}
+
+// GetHostInfoByVpnIp returns a single tunnels hostInfo, or nil if not found
+// Caller should take care to Unmap() any 4in6 addresses prior to calling.
+func (c *Control) GetHostInfoByVpnIp(vpnIp netip.Addr, pending bool) *ControlHostInfo {
+	var hl controlHostLister
+	if pending {
+		hl = c.f.handshakeManager
+	} else {
+		hl = c.f.hostMap
 	}
 
-	h, err := hm.QueryVpnIp(vpnIp)
-	if err != nil {
+	h := hl.QueryVpnIp(vpnIp)
+	if h == nil {
 		return nil
 	}
 
-	ch := copyHostInfo(h, c.f.hostMap.preferredRanges)
+	ch := copyHostInfo(h, c.f.hostMap.GetPreferredRanges())
 	return &ch
 }
 
 // SetRemoteForTunnel forces a tunnel to use a specific remote
-func (c *Control) SetRemoteForTunnel(vpnIp iputil.VpnIp, addr udp.Addr) *ControlHostInfo {
-	hostInfo, err := c.f.hostMap.QueryVpnIp(vpnIp)
-	if err != nil {
+// Caller should take care to Unmap() any 4in6 addresses prior to calling.
+func (c *Control) SetRemoteForTunnel(vpnIp netip.Addr, addr netip.AddrPort) *ControlHostInfo {
+	hostInfo := c.f.hostMap.QueryVpnIp(vpnIp)
+	if hostInfo == nil {
 		return nil
 	}
 
-	hostInfo.SetRemote(addr.Copy())
-	ch := copyHostInfo(hostInfo, c.f.hostMap.preferredRanges)
+	hostInfo.SetRemote(addr)
+	ch := copyHostInfo(hostInfo, c.f.hostMap.GetPreferredRanges())
 	return &ch
 }
 
 // CloseTunnel closes a fully established tunnel. If localOnly is false it will notify the remote end as well.
-func (c *Control) CloseTunnel(vpnIp iputil.VpnIp, localOnly bool) bool {
-	hostInfo, err := c.f.hostMap.QueryVpnIp(vpnIp)
-	if err != nil {
+// Caller should take care to Unmap() any 4in6 addresses prior to calling.
+func (c *Control) CloseTunnel(vpnIp netip.Addr, localOnly bool) bool {
+	hostInfo := c.f.hostMap.QueryVpnIp(vpnIp)
+	if hostInfo == nil {
 		return false
 	}
 
@@ -179,7 +246,7 @@ func (c *Control) CloseAllTunnels(excludeLighthouses bool) (closed int) {
 	}
 
 	// Learn which hosts are being used as relays, so we can shut them down last.
-	relayingHosts := map[iputil.VpnIp]*HostInfo{}
+	relayingHosts := map[netip.Addr]*HostInfo{}
 	// Grab the hostMap lock to access the Relays map
 	c.f.hostMap.Lock()
 	for _, relayingHost := range c.f.hostMap.Relays {
@@ -190,7 +257,7 @@ func (c *Control) CloseAllTunnels(excludeLighthouses bool) (closed int) {
 	hostInfos := []*HostInfo{}
 	// Grab the hostMap lock to access the Hosts map
 	c.f.hostMap.Lock()
-	for _, relayHost := range c.f.hostMap.Hosts {
+	for _, relayHost := range c.f.hostMap.Indexes {
 		if _, ok := relayingHosts[relayHost.vpnIp]; !ok {
 			hostInfos = append(hostInfos, relayHost)
 		}
@@ -206,42 +273,47 @@ func (c *Control) CloseAllTunnels(excludeLighthouses bool) (closed int) {
 	return
 }
 
-func copyHostInfo(h *HostInfo, preferredRanges []*net.IPNet) ControlHostInfo {
+func (c *Control) Device() overlay.Device {
+	return c.f.inside
+}
+
+func copyHostInfo(h *HostInfo, preferredRanges []netip.Prefix) ControlHostInfo {
 
 	chi := ControlHostInfo{
-		VpnIp:                  h.vpnIp.ToIP(),
+		VpnIp:                  h.vpnIp,
 		LocalIndex:             h.localIndexId,
 		RemoteIndex:            h.remoteIndexId,
 		RemoteAddrs:            h.remotes.CopyAddrs(preferredRanges),
-		CachedPackets:          len(h.packetStore),
 		CurrentRelaysToMe:      h.relayState.CopyRelayIps(),
 		CurrentRelaysThroughMe: h.relayState.CopyRelayForIps(),
+		CurrentRemote:          h.remote,
 	}
 
 	if h.ConnectionState != nil {
-		chi.MessageCounter = atomic.LoadUint64(&h.ConnectionState.atomicMessageCounter)
+		chi.MessageCounter = h.ConnectionState.messageCounter.Load()
 	}
 
 	if c := h.GetCert(); c != nil {
 		chi.Cert = c.Copy()
 	}
 
-	if h.remote != nil {
-		chi.CurrentRemote = h.remote.Copy()
-	}
-
 	return chi
 }
 
-func listHostMap(hm *HostMap) []ControlHostInfo {
-	hm.RLock()
-	hosts := make([]ControlHostInfo, len(hm.Hosts))
-	i := 0
-	for _, v := range hm.Hosts {
-		hosts[i] = copyHostInfo(v, hm.preferredRanges)
-		i++
-	}
-	hm.RUnlock()
-
+func listHostMapHosts(hl controlHostLister) []ControlHostInfo {
+	hosts := make([]ControlHostInfo, 0)
+	pr := hl.GetPreferredRanges()
+	hl.ForEachVpnIp(func(hostinfo *HostInfo) {
+		hosts = append(hosts, copyHostInfo(hostinfo, pr))
+	})
+	return hosts
+}
+
+func listHostMapIndexes(hl controlHostLister) []ControlHostInfo {
+	hosts := make([]ControlHostInfo, 0)
+	pr := hl.GetPreferredRanges()
+	hl.ForEachIndex(func(hostinfo *HostInfo) {
+		hosts = append(hosts, copyHostInfo(hostinfo, pr))
+	})
 	return hosts
 }

control_test.go

@@ -2,15 +2,14 @@ package nebula
 
 import (
 	"net"
+	"net/netip"
 	"reflect"
 	"testing"
 	"time"
 
 	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/cert"
-	"github.com/slackhq/nebula/iputil"
 	"github.com/slackhq/nebula/test"
-	"github.com/slackhq/nebula/udp"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -18,16 +17,19 @@ func TestControl_GetHostInfoByVpnIp(t *testing.T) {
 	l := test.NewLogger()
 	// Special care must be taken to re-use all objects provided to the hostmap and certificate in the expectedInfo object
 	// To properly ensure we are not exposing core memory to the caller
-	hm := NewHostMap(l, "test", &net.IPNet{}, make([]*net.IPNet, 0))
-	remote1 := udp.NewAddr(net.ParseIP("0.0.0.100"), 4444)
-	remote2 := udp.NewAddr(net.ParseIP("1:2:3:4:5:6:7:8"), 4444)
+	hm := newHostMap(l, netip.Prefix{})
+	hm.preferredRanges.Store(&[]netip.Prefix{})
+
+	remote1 := netip.MustParseAddrPort("0.0.0.100:4444")
+	remote2 := netip.MustParseAddrPort("[1:2:3:4:5:6:7:8]:4444")
+
 	ipNet := net.IPNet{
-		IP:   net.IPv4(1, 2, 3, 4),
+		IP:   remote1.Addr().AsSlice(),
 		Mask: net.IPMask{255, 255, 255, 0},
 	}
 
 	ipNet2 := net.IPNet{
-		IP:   net.ParseIP("1:2:3:4:5:6:7:8"),
+		IP:   remote2.Addr().AsSlice(),
 		Mask: net.IPMask{255, 255, 255, 0},
 	}
 
@@ -47,10 +49,14 @@ func TestControl_GetHostInfoByVpnIp(t *testing.T) {
 		Signature: []byte{1, 2, 1, 2, 1, 3},
 	}
 
-	remotes := NewRemoteList()
-	remotes.unlockedPrependV4(0, NewIp4AndPort(remote1.IP, uint32(remote1.Port)))
-	remotes.unlockedPrependV6(0, NewIp6AndPort(remote2.IP, uint32(remote2.Port)))
-	hm.Add(iputil.Ip2VpnIp(ipNet.IP), &HostInfo{
+	remotes := NewRemoteList(nil)
+	remotes.unlockedPrependV4(netip.IPv4Unspecified(), NewIp4AndPortFromNetIP(remote1.Addr(), remote1.Port()))
+	remotes.unlockedPrependV6(netip.IPv4Unspecified(), NewIp6AndPortFromNetIP(remote2.Addr(), remote2.Port()))
+
+	vpnIp, ok := netip.AddrFromSlice(ipNet.IP)
+	assert.True(t, ok)
+
+	hm.unlockedAddHostInfo(&HostInfo{
 		remote:  remote1,
 		remotes: remotes,
 		ConnectionState: &ConnectionState{
@@ -58,15 +64,18 @@ func TestControl_GetHostInfoByVpnIp(t *testing.T) {
 		},
 		remoteIndexId: 200,
 		localIndexId:  201,
-		vpnIp:         iputil.Ip2VpnIp(ipNet.IP),
+		vpnIp:         vpnIp,
 		relayState: RelayState{
-			relays:        map[iputil.VpnIp]struct{}{},
-			relayForByIp:  map[iputil.VpnIp]*Relay{},
+			relays:        nil,
+			relayForByIp:  map[netip.Addr]*Relay{},
 			relayForByIdx: map[uint32]*Relay{},
 		},
-	})
+	}, &Interface{})
 
-	hm.Add(iputil.Ip2VpnIp(ipNet2.IP), &HostInfo{
+	vpnIp2, ok := netip.AddrFromSlice(ipNet2.IP)
+	assert.True(t, ok)
+
+	hm.unlockedAddHostInfo(&HostInfo{
 		remote:  remote1,
 		remotes: remotes,
 		ConnectionState: &ConnectionState{
@@ -74,13 +83,13 @@ func TestControl_GetHostInfoByVpnIp(t *testing.T) {
 		},
 		remoteIndexId: 200,
 		localIndexId:  201,
-		vpnIp:         iputil.Ip2VpnIp(ipNet2.IP),
+		vpnIp:         vpnIp2,
 		relayState: RelayState{
-			relays:        map[iputil.VpnIp]struct{}{},
-			relayForByIp:  map[iputil.VpnIp]*Relay{},
+			relays:        nil,
+			relayForByIp:  map[netip.Addr]*Relay{},
 			relayForByIdx: map[uint32]*Relay{},
 		},
-	})
+	}, &Interface{})
 
 	c := Control{
 		f: &Interface{
@@ -89,28 +98,29 @@ func TestControl_GetHostInfoByVpnIp(t *testing.T) {
 		l: logrus.New(),
 	}
 
-	thi := c.GetHostInfoByVpnIp(iputil.Ip2VpnIp(ipNet.IP), false)
+	thi := c.GetHostInfoByVpnIp(vpnIp, false)
 
 	expectedInfo := ControlHostInfo{
-		VpnIp:                  net.IPv4(1, 2, 3, 4).To4(),
+		VpnIp:                  vpnIp,
 		LocalIndex:             201,
 		RemoteIndex:            200,
-		RemoteAddrs:            []*udp.Addr{remote2, remote1},
-		CachedPackets:          0,
+		RemoteAddrs:            []netip.AddrPort{remote2, remote1},
 		Cert:                   crt.Copy(),
 		MessageCounter:         0,
-		CurrentRemote:          udp.NewAddr(net.ParseIP("0.0.0.100"), 4444),
-		CurrentRelaysToMe:      []iputil.VpnIp{},
-		CurrentRelaysThroughMe: []iputil.VpnIp{},
+		CurrentRemote:          remote1,
+		CurrentRelaysToMe:      []netip.Addr{},
+		CurrentRelaysThroughMe: []netip.Addr{},
 	}
 
 	// Make sure we don't have any unexpected fields
-	assertFields(t, []string{"VpnIp", "LocalIndex", "RemoteIndex", "RemoteAddrs", "CachedPackets", "Cert", "MessageCounter", "CurrentRemote", "CurrentRelaysToMe", "CurrentRelaysThroughMe"}, thi)
-	test.AssertDeepCopyEqual(t, &expectedInfo, thi)
+	assertFields(t, []string{"VpnIp", "LocalIndex", "RemoteIndex", "RemoteAddrs", "Cert", "MessageCounter", "CurrentRemote", "CurrentRelaysToMe", "CurrentRelaysThroughMe"}, thi)
+	assert.EqualValues(t, &expectedInfo, thi)
+	//TODO: netip.Addr reuses global memory for zone identifiers which breaks our "no reused memory check" here
+	//test.AssertDeepCopyEqual(t, &expectedInfo, thi)
 
 	// Make sure we don't panic if the host info doesn't have a cert yet
 	assert.NotPanics(t, func() {
-		thi = c.GetHostInfoByVpnIp(iputil.Ip2VpnIp(ipNet2.IP), false)
+		thi = c.GetHostInfoByVpnIp(vpnIp2, false)
 	})
 }
 

control_tester.go

@@ -4,22 +4,23 @@
 package nebula
 
 import (
-	"net"
+	"net/netip"
+
+	"github.com/slackhq/nebula/cert"
 
 	"github.com/google/gopacket"
 	"github.com/google/gopacket/layers"
 	"github.com/slackhq/nebula/header"
-	"github.com/slackhq/nebula/iputil"
 	"github.com/slackhq/nebula/overlay"
 	"github.com/slackhq/nebula/udp"
 )
 
-// WaitForTypeByIndex will pipe all messages from this control device into the pipeTo control device
+// WaitForType will pipe all messages from this control device into the pipeTo control device
 // returning after a message matching the criteria has been piped
 func (c *Control) WaitForType(msgType header.MessageType, subType header.MessageSubType, pipeTo *Control) {
 	h := &header.H{}
 	for {
-		p := c.f.outside.Get(true)
+		p := c.f.outside.(*udp.TesterConn).Get(true)
 		if err := h.Parse(p.Data); err != nil {
 			panic(err)
 		}
@@ -35,7 +36,7 @@ func (c *Control) WaitForType(msgType header.MessageType, subType header.Message
 func (c *Control) WaitForTypeByIndex(toIndex uint32, msgType header.MessageType, subType header.MessageSubType, pipeTo *Control) {
 	h := &header.H{}
 	for {
-		p := c.f.outside.Get(true)
+		p := c.f.outside.(*udp.TesterConn).Get(true)
 		if err := h.Parse(p.Data); err != nil {
 			panic(err)
 		}
@@ -48,37 +49,30 @@ func (c *Control) WaitForTypeByIndex(toIndex uint32, msgType header.MessageType,
 
 // InjectLightHouseAddr will push toAddr into the local lighthouse cache for the vpnIp
 // This is necessary if you did not configure static hosts or are not running a lighthouse
-func (c *Control) InjectLightHouseAddr(vpnIp net.IP, toAddr *net.UDPAddr) {
+func (c *Control) InjectLightHouseAddr(vpnIp netip.Addr, toAddr netip.AddrPort) {
 	c.f.lightHouse.Lock()
-	remoteList := c.f.lightHouse.unlockedGetRemoteList(iputil.Ip2VpnIp(vpnIp))
+	remoteList := c.f.lightHouse.unlockedGetRemoteList(vpnIp)
 	remoteList.Lock()
 	defer remoteList.Unlock()
 	c.f.lightHouse.Unlock()
 
-	iVpnIp := iputil.Ip2VpnIp(vpnIp)
-	if v4 := toAddr.IP.To4(); v4 != nil {
-		remoteList.unlockedPrependV4(iVpnIp, NewIp4AndPort(v4, uint32(toAddr.Port)))
+	if toAddr.Addr().Is4() {
+		remoteList.unlockedPrependV4(vpnIp, NewIp4AndPortFromNetIP(toAddr.Addr(), toAddr.Port()))
 	} else {
-		remoteList.unlockedPrependV6(iVpnIp, NewIp6AndPort(toAddr.IP, uint32(toAddr.Port)))
+		remoteList.unlockedPrependV6(vpnIp, NewIp6AndPortFromNetIP(toAddr.Addr(), toAddr.Port()))
 	}
 }
 
 // InjectRelays will push relayVpnIps into the local lighthouse cache for the vpnIp
 // This is necessary to inform an initiator of possible relays for communicating with a responder
-func (c *Control) InjectRelays(vpnIp net.IP, relayVpnIps []net.IP) {
+func (c *Control) InjectRelays(vpnIp netip.Addr, relayVpnIps []netip.Addr) {
 	c.f.lightHouse.Lock()
-	remoteList := c.f.lightHouse.unlockedGetRemoteList(iputil.Ip2VpnIp(vpnIp))
+	remoteList := c.f.lightHouse.unlockedGetRemoteList(vpnIp)
 	remoteList.Lock()
 	defer remoteList.Unlock()
 	c.f.lightHouse.Unlock()
 
-	iVpnIp := iputil.Ip2VpnIp(vpnIp)
-	uVpnIp := []uint32{}
-	for _, rVPnIp := range relayVpnIps {
-		uVpnIp = append(uVpnIp, uint32(iputil.Ip2VpnIp(rVPnIp)))
-	}
-
-	remoteList.unlockedSetRelay(iVpnIp, iVpnIp, uVpnIp)
+	remoteList.unlockedSetRelay(vpnIp, vpnIp, relayVpnIps)
 }
 
 // GetFromTun will pull a packet off the tun side of nebula
@@ -88,11 +82,11 @@ func (c *Control) GetFromTun(block bool) []byte {
 
 // GetFromUDP will pull a udp packet off the udp side of nebula
 func (c *Control) GetFromUDP(block bool) *udp.Packet {
-	return c.f.outside.Get(block)
+	return c.f.outside.(*udp.TesterConn).Get(block)
 }
 
 func (c *Control) GetUDPTxChan() <-chan *udp.Packet {
-	return c.f.outside.TxPackets
+	return c.f.outside.(*udp.TesterConn).TxPackets
 }
 
 func (c *Control) GetTunTxChan() <-chan []byte {
@@ -101,17 +95,18 @@ func (c *Control) GetTunTxChan() <-chan []byte {
 
 // InjectUDPPacket will inject a packet into the udp side of nebula
 func (c *Control) InjectUDPPacket(p *udp.Packet) {
-	c.f.outside.Send(p)
+	c.f.outside.(*udp.TesterConn).Send(p)
 }
 
 // InjectTunUDPPacket puts a udp packet on the tun interface. Using UDP here because it's a simpler protocol
-func (c *Control) InjectTunUDPPacket(toIp net.IP, toPort uint16, fromPort uint16, data []byte) {
+func (c *Control) InjectTunUDPPacket(toIp netip.Addr, toPort uint16, fromPort uint16, data []byte) {
+	//TODO: IPV6-WORK
 	ip := layers.IPv4{
 		Version:  4,
 		TTL:      64,
 		Protocol: layers.IPProtocolUDP,
-		SrcIP:    c.f.inside.Cidr().IP,
-		DstIP:    toIp,
+		SrcIP:    c.f.inside.Cidr().Addr().Unmap().AsSlice(),
+		DstIP:    toIp.Unmap().AsSlice(),
 	}
 
 	udp := layers.UDP{
@@ -136,20 +131,32 @@ func (c *Control) InjectTunUDPPacket(toIp net.IP, toPort uint16, fromPort uint16
 	c.f.inside.(*overlay.TestTun).Send(buffer.Bytes())
 }
 
-func (c *Control) GetVpnIp() iputil.VpnIp {
-	return c.f.myVpnIp
+func (c *Control) GetVpnIp() netip.Addr {
+	return c.f.myVpnNet.Addr()
 }
 
-func (c *Control) GetUDPAddr() string {
-	return c.f.outside.Addr.String()
+func (c *Control) GetUDPAddr() netip.AddrPort {
+	return c.f.outside.(*udp.TesterConn).Addr
 }
 
-func (c *Control) KillPendingTunnel(vpnIp net.IP) bool {
-	hostinfo, ok := c.f.handshakeManager.pendingHostMap.Hosts[iputil.Ip2VpnIp(vpnIp)]
-	if !ok {
+func (c *Control) KillPendingTunnel(vpnIp netip.Addr) bool {
+	hostinfo := c.f.handshakeManager.QueryVpnIp(vpnIp)
+	if hostinfo == nil {
 		return false
 	}
 
-	c.f.handshakeManager.pendingHostMap.DeleteHostInfo(hostinfo)
+	c.f.handshakeManager.DeleteHostInfo(hostinfo)
 	return true
 }
+
+func (c *Control) GetHostmap() *HostMap {
+	return c.f.hostMap
+}
+
+func (c *Control) GetCert() *cert.NebulaCertificate {
+	return c.f.pki.GetCertState().Certificate
+}
+
+func (c *Control) ReHandshake(vpnIp netip.Addr) {
+	c.f.handshakeManager.StartHandshake(vpnIp, nil)
+}

dist/arch/nebula.service

@@ -1,13 +0,0 @@
-[Unit]
-Description=nebula
-Wants=basic.target network-online.target
-After=basic.target network.target network-online.target
-
-[Service]
-SyslogIdentifier=nebula
-ExecReload=/bin/kill -HUP $MAINPID
-ExecStart=/usr/bin/nebula -config /etc/nebula/config.yml
-Restart=always
-
-[Install]
-WantedBy=multi-user.target

dist/fedora/nebula.service

@@ -1,15 +0,0 @@
-[Unit]
-Description=Nebula overlay networking tool
-
-After=basic.target network.target network-online.target
-Before=sshd.service
-Wants=basic.target network-online.target
-
-[Service]
-ExecReload=/bin/kill -HUP $MAINPID
-ExecStart=/usr/bin/nebula -config /etc/nebula/config.yml
-Restart=always
-SyslogIdentifier=nebula
-
-[Install]
-WantedBy=multi-user.target

dns_server.go

@@ -3,13 +3,14 @@ package nebula
 import (
 	"fmt"
 	"net"
+	"net/netip"
 	"strconv"
+	"strings"
 	"sync"
 
 	"github.com/miekg/dns"
 	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula/config"
-	"github.com/slackhq/nebula/iputil"
 )
 
 // This whole thing should be rewritten to use context
@@ -33,37 +34,38 @@ func newDnsRecords(hostMap *HostMap) *dnsRecords {
 
 func (d *dnsRecords) Query(data string) string {
 	d.RLock()
-	if r, ok := d.dnsMap[data]; ok {
-		d.RUnlock()
+	defer d.RUnlock()
+	if r, ok := d.dnsMap[strings.ToLower(data)]; ok {
 		return r
 	}
-	d.RUnlock()
 	return ""
 }
 
 func (d *dnsRecords) QueryCert(data string) string {
-	ip := net.ParseIP(data[:len(data)-1])
-	if ip == nil {
-		return ""
-	}
-	iip := iputil.Ip2VpnIp(ip)
-	hostinfo, err := d.hostMap.QueryVpnIp(iip)
+	ip, err := netip.ParseAddr(data[:len(data)-1])
 	if err != nil {
 		return ""
 	}
+
+	hostinfo := d.hostMap.QueryVpnIp(ip)
+	if hostinfo == nil {
+		return ""
+	}
+
 	q := hostinfo.GetCert()
 	if q == nil {
 		return ""
 	}
+
 	cert := q.Details
-	c := fmt.Sprintf("\"Name: %s\" \"Ips: %s\" \"Subnets %s\" \"Groups %s\" \"NotBefore %s\" \"NotAFter %s\" \"PublicKey %x\" \"IsCA %t\" \"Issuer %s\"", cert.Name, cert.Ips, cert.Subnets, cert.Groups, cert.NotBefore, cert.NotAfter, cert.PublicKey, cert.IsCA, cert.Issuer)
+	c := fmt.Sprintf("\"Name: %s\" \"Ips: %s\" \"Subnets %s\" \"Groups %s\" \"NotBefore %s\" \"NotAfter %s\" \"PublicKey %x\" \"IsCA %t\" \"Issuer %s\"", cert.Name, cert.Ips, cert.Subnets, cert.Groups, cert.NotBefore, cert.NotAfter, cert.PublicKey, cert.IsCA, cert.Issuer)
 	return c
 }
 
 func (d *dnsRecords) Add(host, data string) {
 	d.Lock()
-	d.dnsMap[host] = data
-	d.Unlock()
+	defer d.Unlock()
+	d.dnsMap[strings.ToLower(host)] = data
 }
 
 func parseQuery(l *logrus.Logger, m *dns.Msg, w dns.ResponseWriter) {
@@ -80,7 +82,11 @@ func parseQuery(l *logrus.Logger, m *dns.Msg, w dns.ResponseWriter) {
 			}
 		case dns.TypeTXT:
 			a, _, _ := net.SplitHostPort(w.RemoteAddr().String())
-			b := net.ParseIP(a)
+			b, err := netip.ParseAddr(a)
+			if err != nil {
+				return
+			}
+
 			// We don't answer these queries from non nebula nodes or localhost
 			//l.Debugf("Does %s contain %s", b, dnsR.hostMap.vpnCIDR)
 			if !dnsR.hostMap.vpnCIDR.Contains(b) && a != "127.0.0.1" {
@@ -96,6 +102,10 @@ func parseQuery(l *logrus.Logger, m *dns.Msg, w dns.ResponseWriter) {
 			}
 		}
 	}
+
+	if len(m.Answer) == 0 {
+		m.Rcode = dns.RcodeNameError
+	}
 }
 
 func handleDnsRequest(l *logrus.Logger, w dns.ResponseWriter, r *dns.Msg) {
@@ -129,7 +139,12 @@ func dnsMain(l *logrus.Logger, hostMap *HostMap, c *config.C) func() {
 }
 
 func getDnsServerAddr(c *config.C) string {
-	return c.GetString("lighthouse.dns.host", "") + ":" + strconv.Itoa(c.GetInt("lighthouse.dns.port", 53))
+	dnsHost := strings.TrimSpace(c.GetString("lighthouse.dns.host", ""))
+	// Old guidance was to provide the literal `[::]` in `lighthouse.dns.host` but that won't resolve.
+	if dnsHost == "[::]" {
+		dnsHost = "::"
+	}
+	return net.JoinHostPort(dnsHost, strconv.Itoa(c.GetInt("lighthouse.dns.port", 53)))
 }
 
 func startDns(l *logrus.Logger, c *config.C) {

dns_server_test.go

@@ -4,6 +4,8 @@ import (
 	"testing"
 
 	"github.com/miekg/dns"
+	"github.com/slackhq/nebula/config"
+	"github.com/stretchr/testify/assert"
 )
 
 func TestParsequery(t *testing.T) {
@@ -17,3 +19,40 @@ func TestParsequery(t *testing.T) {
 
 	//parseQuery(m)
 }
+
+func Test_getDnsServerAddr(t *testing.T) {
+	c := config.NewC(nil)
+
+	c.Settings["lighthouse"] = map[interface{}]interface{}{
+		"dns": map[interface{}]interface{}{
+			"host": "0.0.0.0",
+			"port": "1",
+		},
+	}
+	assert.Equal(t, "0.0.0.0:1", getDnsServerAddr(c))
+
+	c.Settings["lighthouse"] = map[interface{}]interface{}{
+		"dns": map[interface{}]interface{}{
+			"host": "::",
+			"port": "1",
+		},
+	}
+	assert.Equal(t, "[::]:1", getDnsServerAddr(c))
+
+	c.Settings["lighthouse"] = map[interface{}]interface{}{
+		"dns": map[interface{}]interface{}{
+			"host": "[::]",
+			"port": "1",
+		},
+	}
+	assert.Equal(t, "[::]:1", getDnsServerAddr(c))
+
+	// Make sure whitespace doesn't mess us up
+	c.Settings["lighthouse"] = map[interface{}]interface{}{
+		"dns": map[interface{}]interface{}{
+			"host": "[::] ",
+			"port": "1",
+		},
+	}
+	assert.Equal(t, "[::]:1", getDnsServerAddr(c))
+}

docker/Dockerfile

@@ -0,0 +1,11 @@
+FROM gcr.io/distroless/static:latest
+
+ARG TARGETOS TARGETARCH
+COPY build/$TARGETOS-$TARGETARCH/nebula /nebula
+COPY build/$TARGETOS-$TARGETARCH/nebula-cert /nebula-cert
+
+VOLUME ["/config"]
+
+ENTRYPOINT ["/nebula"]
+# Allow users to override the args passed to nebula
+CMD ["-config", "/config/config.yml"]

docker/README.md

@@ -0,0 +1,24 @@
+# NebulaOSS/nebula Docker Image
+
+## Building
+
+From the root of the repository, run `make docker`.
+
+## Running
+
+To run the built image, use the following command:
+
+```
+docker run \
+    --name nebula \
+    --network host \
+    --cap-add NET_ADMIN \
+    --volume ./config:/config \
+    --rm \
+    nebulaoss/nebula
+```
+
+A few notes:
+
+- The `NET_ADMIN` capability is necessary to create the tun adapter on the host (this is unnecessary if the tun device is disabled.)
+- `--volume ./config:/config` should point to a directory that contains your `config.yml` and any other necessary files.

e2e/helpers.go

@@ -0,0 +1,125 @@
+package e2e
+
+import (
+	"crypto/rand"
+	"io"
+	"net"
+	"net/netip"
+	"time"
+
+	"github.com/slackhq/nebula/cert"
+	"golang.org/x/crypto/curve25519"
+	"golang.org/x/crypto/ed25519"
+)
+
+// NewTestCaCert will generate a CA cert
+func NewTestCaCert(before, after time.Time, ips, subnets []netip.Prefix, groups []string) (*cert.NebulaCertificate, []byte, []byte, []byte) {
+	pub, priv, err := ed25519.GenerateKey(rand.Reader)
+	if before.IsZero() {
+		before = time.Now().Add(time.Second * -60).Round(time.Second)
+	}
+	if after.IsZero() {
+		after = time.Now().Add(time.Second * 60).Round(time.Second)
+	}
+
+	nc := &cert.NebulaCertificate{
+		Details: cert.NebulaCertificateDetails{
+			Name:           "test ca",
+			NotBefore:      time.Unix(before.Unix(), 0),
+			NotAfter:       time.Unix(after.Unix(), 0),
+			PublicKey:      pub,
+			IsCA:           true,
+			InvertedGroups: make(map[string]struct{}),
+		},
+	}
+
+	if len(ips) > 0 {
+		nc.Details.Ips = make([]*net.IPNet, len(ips))
+		for i, ip := range ips {
+			nc.Details.Ips[i] = &net.IPNet{IP: ip.Addr().AsSlice(), Mask: net.CIDRMask(ip.Bits(), ip.Addr().BitLen())}
+		}
+	}
+
+	if len(subnets) > 0 {
+		nc.Details.Subnets = make([]*net.IPNet, len(subnets))
+		for i, ip := range subnets {
+			nc.Details.Ips[i] = &net.IPNet{IP: ip.Addr().AsSlice(), Mask: net.CIDRMask(ip.Bits(), ip.Addr().BitLen())}
+		}
+	}
+
+	if len(groups) > 0 {
+		nc.Details.Groups = groups
+	}
+
+	err = nc.Sign(cert.Curve_CURVE25519, priv)
+	if err != nil {
+		panic(err)
+	}
+
+	pem, err := nc.MarshalToPEM()
+	if err != nil {
+		panic(err)
+	}
+
+	return nc, pub, priv, pem
+}
+
+// NewTestCert will generate a signed certificate with the provided details.
+// Expiry times are defaulted if you do not pass them in
+func NewTestCert(ca *cert.NebulaCertificate, key []byte, name string, before, after time.Time, ip netip.Prefix, subnets []netip.Prefix, groups []string) (*cert.NebulaCertificate, []byte, []byte, []byte) {
+	issuer, err := ca.Sha256Sum()
+	if err != nil {
+		panic(err)
+	}
+
+	if before.IsZero() {
+		before = time.Now().Add(time.Second * -60).Round(time.Second)
+	}
+
+	if after.IsZero() {
+		after = time.Now().Add(time.Second * 60).Round(time.Second)
+	}
+
+	pub, rawPriv := x25519Keypair()
+	ipb := ip.Addr().AsSlice()
+	nc := &cert.NebulaCertificate{
+		Details: cert.NebulaCertificateDetails{
+			Name: name,
+			Ips:  []*net.IPNet{{IP: ipb[:], Mask: net.CIDRMask(ip.Bits(), ip.Addr().BitLen())}},
+			//Subnets:        subnets,
+			Groups:         groups,
+			NotBefore:      time.Unix(before.Unix(), 0),
+			NotAfter:       time.Unix(after.Unix(), 0),
+			PublicKey:      pub,
+			IsCA:           false,
+			Issuer:         issuer,
+			InvertedGroups: make(map[string]struct{}),
+		},
+	}
+
+	err = nc.Sign(ca.Details.Curve, key)
+	if err != nil {
+		panic(err)
+	}
+
+	pem, err := nc.MarshalToPEM()
+	if err != nil {
+		panic(err)
+	}
+
+	return nc, pub, cert.MarshalX25519PrivateKey(rawPriv), pem
+}
+
+func x25519Keypair() ([]byte, []byte) {
+	privkey := make([]byte, 32)
+	if _, err := io.ReadFull(rand.Reader, privkey); err != nil {
+		panic(err)
+	}
+
+	pubkey, err := curve25519.X25519(privkey, curve25519.Basepoint)
+	if err != nil {
+		panic(err)
+	}
+
+	return pubkey, privkey
+}

e2e/helpers_test.go

@@ -4,44 +4,47 @@
 package e2e
 
 import (
-	"crypto/rand"
 	"fmt"
 	"io"
-	"io/ioutil"
-	"net"
+	"net/netip"
 	"os"
 	"testing"
 	"time"
 
+	"dario.cat/mergo"
 	"github.com/google/gopacket"
 	"github.com/google/gopacket/layers"
-	"github.com/imdario/mergo"
 	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula"
 	"github.com/slackhq/nebula/cert"
 	"github.com/slackhq/nebula/config"
 	"github.com/slackhq/nebula/e2e/router"
-	"github.com/slackhq/nebula/iputil"
 	"github.com/stretchr/testify/assert"
-	"golang.org/x/crypto/curve25519"
-	"golang.org/x/crypto/ed25519"
 	"gopkg.in/yaml.v2"
 )
 
 type m map[string]interface{}
 
 // newSimpleServer creates a nebula instance with many assumptions
-func newSimpleServer(caCrt *cert.NebulaCertificate, caKey []byte, name string, udpIp net.IP, overrides m) (*nebula.Control, net.IP, *net.UDPAddr) {
+func newSimpleServer(caCrt *cert.NebulaCertificate, caKey []byte, name string, sVpnIpNet string, overrides m) (*nebula.Control, netip.Prefix, netip.AddrPort, *config.C) {
 	l := NewTestLogger()
 
-	vpnIpNet := &net.IPNet{IP: make([]byte, len(udpIp)), Mask: net.IPMask{255, 255, 255, 0}}
-	copy(vpnIpNet.IP, udpIp)
-	vpnIpNet.IP[1] += 128
-	udpAddr := net.UDPAddr{
-		IP:   udpIp,
-		Port: 4242,
+	vpnIpNet, err := netip.ParsePrefix(sVpnIpNet)
+	if err != nil {
+		panic(err)
 	}
-	_, _, myPrivKey, myPEM := newTestCert(caCrt, caKey, name, time.Now(), time.Now().Add(5*time.Minute), vpnIpNet, nil, []string{})
+
+	var udpAddr netip.AddrPort
+	if vpnIpNet.Addr().Is4() {
+		budpIp := vpnIpNet.Addr().As4()
+		budpIp[1] -= 128
+		udpAddr = netip.AddrPortFrom(netip.AddrFrom4(budpIp), 4242)
+	} else {
+		budpIp := vpnIpNet.Addr().As16()
+		budpIp[13] -= 128
+		udpAddr = netip.AddrPortFrom(netip.AddrFrom16(budpIp), 4242)
+	}
+	_, _, myPrivKey, myPEM := NewTestCert(caCrt, caKey, name, time.Now(), time.Now().Add(5*time.Minute), vpnIpNet, nil, []string{})
 
 	caB, err := caCrt.MarshalToPEM()
 	if err != nil {
@@ -71,13 +74,17 @@ func newSimpleServer(caCrt *cert.NebulaCertificate, caKey []byte, name string, u
 		//	"try_interval": "1s",
 		//},
 		"listen": m{
-			"host": udpAddr.IP.String(),
-			"port": udpAddr.Port,
+			"host": udpAddr.Addr().String(),
+			"port": udpAddr.Port(),
 		},
 		"logging": m{
 			"timestamp_format": fmt.Sprintf("%v 15:04:05.000000", name),
 			"level":            l.Level.String(),
 		},
+		"timers": m{
+			"pending_deletion_interval": 2,
+			"connection_alive_interval": 2,
+		},
 	}
 
 	if overrides != nil {
@@ -102,113 +109,7 @@ func newSimpleServer(caCrt *cert.NebulaCertificate, caKey []byte, name string, u
 		panic(err)
 	}
 
-	return control, vpnIpNet.IP, &udpAddr
-}
-
-// newTestCaCert will generate a CA cert
-func newTestCaCert(before, after time.Time, ips, subnets []*net.IPNet, groups []string) (*cert.NebulaCertificate, []byte, []byte, []byte) {
-	pub, priv, err := ed25519.GenerateKey(rand.Reader)
-	if before.IsZero() {
-		before = time.Now().Add(time.Second * -60).Round(time.Second)
-	}
-	if after.IsZero() {
-		after = time.Now().Add(time.Second * 60).Round(time.Second)
-	}
-
-	nc := &cert.NebulaCertificate{
-		Details: cert.NebulaCertificateDetails{
-			Name:           "test ca",
-			NotBefore:      time.Unix(before.Unix(), 0),
-			NotAfter:       time.Unix(after.Unix(), 0),
-			PublicKey:      pub,
-			IsCA:           true,
-			InvertedGroups: make(map[string]struct{}),
-		},
-	}
-
-	if len(ips) > 0 {
-		nc.Details.Ips = ips
-	}
-
-	if len(subnets) > 0 {
-		nc.Details.Subnets = subnets
-	}
-
-	if len(groups) > 0 {
-		nc.Details.Groups = groups
-	}
-
-	err = nc.Sign(priv)
-	if err != nil {
-		panic(err)
-	}
-
-	pem, err := nc.MarshalToPEM()
-	if err != nil {
-		panic(err)
-	}
-
-	return nc, pub, priv, pem
-}
-
-// newTestCert will generate a signed certificate with the provided details.
-// Expiry times are defaulted if you do not pass them in
-func newTestCert(ca *cert.NebulaCertificate, key []byte, name string, before, after time.Time, ip *net.IPNet, subnets []*net.IPNet, groups []string) (*cert.NebulaCertificate, []byte, []byte, []byte) {
-	issuer, err := ca.Sha256Sum()
-	if err != nil {
-		panic(err)
-	}
-
-	if before.IsZero() {
-		before = time.Now().Add(time.Second * -60).Round(time.Second)
-	}
-
-	if after.IsZero() {
-		after = time.Now().Add(time.Second * 60).Round(time.Second)
-	}
-
-	pub, rawPriv := x25519Keypair()
-
-	nc := &cert.NebulaCertificate{
-		Details: cert.NebulaCertificateDetails{
-			Name:           name,
-			Ips:            []*net.IPNet{ip},
-			Subnets:        subnets,
-			Groups:         groups,
-			NotBefore:      time.Unix(before.Unix(), 0),
-			NotAfter:       time.Unix(after.Unix(), 0),
-			PublicKey:      pub,
-			IsCA:           false,
-			Issuer:         issuer,
-			InvertedGroups: make(map[string]struct{}),
-		},
-	}
-
-	err = nc.Sign(key)
-	if err != nil {
-		panic(err)
-	}
-
-	pem, err := nc.MarshalToPEM()
-	if err != nil {
-		panic(err)
-	}
-
-	return nc, pub, cert.MarshalX25519PrivateKey(rawPriv), pem
-}
-
-func x25519Keypair() ([]byte, []byte) {
-	privkey := make([]byte, 32)
-	if _, err := io.ReadFull(rand.Reader, privkey); err != nil {
-		panic(err)
-	}
-
-	pubkey, err := curve25519.X25519(privkey, curve25519.Basepoint)
-	if err != nil {
-		panic(err)
-	}
-
-	return pubkey, privkey
+	return control, vpnIpNet, udpAddr, c
 }
 
 type doneCb func()
@@ -229,35 +130,32 @@ func deadline(t *testing.T, seconds time.Duration) doneCb {
 	}
 }
 
-func assertTunnel(t *testing.T, vpnIpA, vpnIpB net.IP, 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.InjectTunUDPPacket(vpnIpA, 80, 90, []byte("Hi from B"))
-	bPacket := r.RouteUntilTxTun(controlB, controlA)
+	bPacket := r.RouteForAllUntilTxTun(controlA)
 	assertUdpPacket(t, []byte("Hi from B"), bPacket, vpnIpB, vpnIpA, 90, 80)
 
 	// And once more from me to them
 	controlA.InjectTunUDPPacket(vpnIpB, 80, 90, []byte("Hello from A"))
-	aPacket := r.RouteUntilTxTun(controlA, controlB)
+	aPacket := r.RouteForAllUntilTxTun(controlB)
 	assertUdpPacket(t, []byte("Hello from A"), aPacket, vpnIpA, vpnIpB, 90, 80)
 }
 
-func assertHostInfoPair(t *testing.T, addrA, addrB *net.UDPAddr, vpnIpA, vpnIpB net.IP, controlA, controlB *nebula.Control) {
+func assertHostInfoPair(t *testing.T, addrA, addrB netip.AddrPort, vpnIpA, vpnIpB netip.Addr, controlA, controlB *nebula.Control) {
 	// Get both host infos
-	hBinA := controlA.GetHostInfoByVpnIp(iputil.Ip2VpnIp(vpnIpB), false)
+	hBinA := controlA.GetHostInfoByVpnIp(vpnIpB, false)
 	assert.NotNil(t, hBinA, "Host B was not found by vpnIp in controlA")
 
-	hAinB := controlB.GetHostInfoByVpnIp(iputil.Ip2VpnIp(vpnIpA), false)
+	hAinB := controlB.GetHostInfoByVpnIp(vpnIpA, false)
 	assert.NotNil(t, hAinB, "Host A was not found by vpnIp in controlB")
 
 	// Check that both vpn and real addr are correct
 	assert.Equal(t, vpnIpB, hBinA.VpnIp, "Host B VpnIp is wrong in control A")
 	assert.Equal(t, vpnIpA, hAinB.VpnIp, "Host A VpnIp is wrong in control B")
 
-	assert.Equal(t, addrB.IP.To16(), hBinA.CurrentRemote.IP.To16(), "Host B remote ip is wrong in control A")
-	assert.Equal(t, addrA.IP.To16(), hAinB.CurrentRemote.IP.To16(), "Host A remote ip is wrong in control B")
-
-	assert.Equal(t, addrB.Port, int(hBinA.CurrentRemote.Port), "Host B remote port is wrong in control A")
-	assert.Equal(t, addrA.Port, int(hAinB.CurrentRemote.Port), "Host A remote port is wrong in control B")
+	assert.Equal(t, addrB, hBinA.CurrentRemote, "Host B remote is wrong in control A")
+	assert.Equal(t, addrA, hAinB.CurrentRemote, "Host A remote is wrong in control B")
 
 	// Check that our indexes match
 	assert.Equal(t, hBinA.LocalIndex, hAinB.RemoteIndex, "Host B local index does not match host A remote index")
@@ -280,13 +178,13 @@ func assertHostInfoPair(t *testing.T, addrA, addrB *net.UDPAddr, vpnIpA, vpnIpB
 	//checkIndexes("hmB", hmB, hAinB)
 }
 
-func assertUdpPacket(t *testing.T, expected, b []byte, fromIp, toIp net.IP, fromPort, toPort uint16) {
+func assertUdpPacket(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")
 
-	assert.Equal(t, fromIp, v4.SrcIP, "Source ip was incorrect")
-	assert.Equal(t, toIp, v4.DstIP, "Dest ip was incorrect")
+	assert.Equal(t, fromIp.AsSlice(), []byte(v4.SrcIP), "Source ip was incorrect")
+	assert.Equal(t, toIp.AsSlice(), []byte(v4.DstIP), "Dest ip was incorrect")
 
 	udp := packet.Layer(layers.LayerTypeUDP).(*layers.UDP)
 	assert.NotNil(t, udp, "No udp data found")
@@ -304,7 +202,8 @@ func NewTestLogger() *logrus.Logger {
 
 	v := os.Getenv("TEST_LOGS")
 	if v == "" {
-		l.SetOutput(ioutil.Discard)
+		l.SetOutput(io.Discard)
+		l.SetLevel(logrus.PanicLevel)
 		return l
 	}
 

e2e/router/hostmap.go

@@ -0,0 +1,145 @@
+//go:build e2e_testing
+// +build e2e_testing
+
+package router
+
+import (
+	"fmt"
+	"net/netip"
+	"sort"
+	"strings"
+
+	"github.com/slackhq/nebula"
+)
+
+type edge struct {
+	from string
+	to   string
+	dual bool
+}
+
+func renderHostmaps(controls ...*nebula.Control) string {
+	var lines []*edge
+	r := "graph TB\n"
+	for _, c := range controls {
+		sr, se := renderHostmap(c)
+		r += sr
+		for _, e := range se {
+			add := true
+
+			// Collapse duplicate edges into a bi-directionally connected edge
+			for _, ge := range lines {
+				if e.to == ge.from && e.from == ge.to {
+					add = false
+					ge.dual = true
+					break
+				}
+			}
+
+			if add {
+				lines = append(lines, e)
+			}
+		}
+	}
+
+	for _, line := range lines {
+		if line.dual {
+			r += fmt.Sprintf("\t%v <--> %v\n", line.from, line.to)
+		} else {
+			r += fmt.Sprintf("\t%v --> %v\n", line.from, line.to)
+		}
+
+	}
+
+	return r
+}
+
+func renderHostmap(c *nebula.Control) (string, []*edge) {
+	var lines []string
+	var globalLines []*edge
+
+	clusterName := strings.Trim(c.GetCert().Details.Name, " ")
+	clusterVpnIp := c.GetCert().Details.Ips[0].IP
+	r := fmt.Sprintf("\tsubgraph %s[\"%s (%s)\"]\n", clusterName, clusterName, clusterVpnIp)
+
+	hm := c.GetHostmap()
+	hm.RLock()
+	defer hm.RUnlock()
+
+	// Draw the vpn to index nodes
+	r += fmt.Sprintf("\t\tsubgraph %s.hosts[\"Hosts (vpn ip to index)\"]\n", clusterName)
+	hosts := sortedHosts(hm.Hosts)
+	for _, vpnIp := range hosts {
+		hi := hm.Hosts[vpnIp]
+		r += fmt.Sprintf("\t\t\t%v.%v[\"%v\"]\n", clusterName, vpnIp, vpnIp)
+		lines = append(lines, fmt.Sprintf("%v.%v --> %v.%v", clusterName, vpnIp, clusterName, hi.GetLocalIndex()))
+
+		rs := hi.GetRelayState()
+		for _, relayIp := range rs.CopyRelayIps() {
+			lines = append(lines, fmt.Sprintf("%v.%v --> %v.%v", clusterName, vpnIp, clusterName, relayIp))
+		}
+
+		for _, relayIp := range rs.CopyRelayForIdxs() {
+			lines = append(lines, fmt.Sprintf("%v.%v --> %v.%v", clusterName, vpnIp, clusterName, relayIp))
+		}
+	}
+	r += "\t\tend\n"
+
+	// Draw the relay hostinfos
+	if len(hm.Relays) > 0 {
+		r += fmt.Sprintf("\t\tsubgraph %s.relays[\"Relays (relay index to hostinfo)\"]\n", clusterName)
+		for relayIndex, hi := range hm.Relays {
+			r += fmt.Sprintf("\t\t\t%v.%v[\"%v\"]\n", clusterName, relayIndex, relayIndex)
+			lines = append(lines, fmt.Sprintf("%v.%v --> %v.%v", clusterName, relayIndex, clusterName, hi.GetLocalIndex()))
+		}
+		r += "\t\tend\n"
+	}
+
+	// Draw the local index to relay or remote index nodes
+	r += fmt.Sprintf("\t\tsubgraph indexes.%s[\"Indexes (index to hostinfo)\"]\n", clusterName)
+	indexes := sortedIndexes(hm.Indexes)
+	for _, idx := range indexes {
+		hi, ok := hm.Indexes[idx]
+		if ok {
+			r += fmt.Sprintf("\t\t\t%v.%v[\"%v (%v)\"]\n", clusterName, idx, idx, hi.GetVpnIp())
+			remoteClusterName := strings.Trim(hi.GetCert().Details.Name, " ")
+			globalLines = append(globalLines, &edge{from: fmt.Sprintf("%v.%v", clusterName, idx), to: fmt.Sprintf("%v.%v", remoteClusterName, hi.GetRemoteIndex())})
+			_ = hi
+		}
+	}
+	r += "\t\tend\n"
+
+	// Add the edges inside this host
+	for _, line := range lines {
+		r += fmt.Sprintf("\t\t%v\n", line)
+	}
+
+	r += "\tend\n"
+	return r, globalLines
+}
+
+func sortedHosts(hosts map[netip.Addr]*nebula.HostInfo) []netip.Addr {
+	keys := make([]netip.Addr, 0, len(hosts))
+	for key := range hosts {
+		keys = append(keys, key)
+	}
+
+	sort.SliceStable(keys, func(i, j int) bool {
+		return keys[i].Compare(keys[j]) > 0
+	})
+
+	return keys
+}
+
+func sortedIndexes(indexes map[uint32]*nebula.HostInfo) []uint32 {
+	keys := make([]uint32, 0, len(indexes))
+	for key := range indexes {
+		keys = append(keys, key)
+	}
+
+	sort.SliceStable(keys, func(i, j int) bool {
+		return keys[i] > keys[j]
+	})
+
+	return keys
+}

e2e/router/router.go

@@ -6,11 +6,11 @@ package router
 import (
 	"context"
 	"fmt"
-	"net"
+	"net/netip"
 	"os"
 	"path/filepath"
 	"reflect"
-	"strconv"
+	"sort"
 	"strings"
 	"sync"
 	"testing"
@@ -20,34 +20,57 @@ import (
 	"github.com/google/gopacket/layers"
 	"github.com/slackhq/nebula"
 	"github.com/slackhq/nebula/header"
-	"github.com/slackhq/nebula/iputil"
 	"github.com/slackhq/nebula/udp"
+	"golang.org/x/exp/maps"
 )
 
 type R struct {
 	// Simple map of the ip:port registered on a control to the control
 	// Basically a router, right?
-	controls map[string]*nebula.Control
+	controls map[netip.AddrPort]*nebula.Control
 
 	// A map for inbound packets for a control that doesn't know about this address
-	inNat map[string]*nebula.Control
+	inNat map[netip.AddrPort]*nebula.Control
 
 	// 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
 	// map[from address + ":" + to address] => ip:port to rewrite in the udp packet to receiver
-	outNat map[string]net.UDPAddr
+	outNat map[string]netip.AddrPort
 
 	// A map of vpn ip to the nebula control it belongs to
-	vpnControls map[iputil.VpnIp]*nebula.Control
+	vpnControls map[netip.Addr]*nebula.Control
 
-	flow []flowEntry
+	ignoreFlows []ignoreFlow
+	flow        []flowEntry
+
+	// A set of additional mermaid graphs to draw in the flow log markdown file
+	// Currently consisting only of hostmap renders
+	additionalGraphs []mermaidGraph
 
 	// All interactions are locked to help serialize behavior
 	sync.Mutex
 
 	fn           string
 	cancelRender context.CancelFunc
-	t            *testing.T
+	t            testing.TB
+}
+
+type ignoreFlow struct {
+	tun         NullBool
+	messageType header.MessageType
+	subType     header.MessageSubType
+	//from
+	//to
+}
+
+type mermaidGraph struct {
+	title   string
+	content string
+}
+
+type NullBool struct {
+	HasValue bool
+	IsTrue   bool
 }
 
 type flowEntry struct {
@@ -63,6 +86,12 @@ type packet struct {
 	rx     bool // the packet was received by a udp device
 }
 
+func (p *packet) WasReceived() {
+	if p != nil {
+		p.rx = true
+	}
+}
+
 type ExitType int
 
 const (
@@ -79,7 +108,7 @@ type ExitFunc func(packet *udp.Packet, receiver *nebula.Control) ExitType
 // NewR creates a new router to pass packets in a controlled fashion between the provided controllers.
 // The packet flow will be recorded in a file within the mermaid directory under the same name as the test.
 // Renders will occur automatically, roughly every 100ms, until a call to RenderFlow() is made
-func NewR(t *testing.T, controls ...*nebula.Control) *R {
+func NewR(t testing.TB, controls ...*nebula.Control) *R {
 	ctx, cancel := context.WithCancel(context.Background())
 
 	if err := os.MkdirAll("mermaid", 0755); err != nil {
@@ -87,10 +116,12 @@ func NewR(t *testing.T, controls ...*nebula.Control) *R {
 	}
 
 	r := &R{
-		controls:     make(map[string]*nebula.Control),
-		vpnControls:  make(map[iputil.VpnIp]*nebula.Control),
-		inNat:        make(map[string]*nebula.Control),
-		outNat:       make(map[string]net.UDPAddr),
+		controls:     make(map[netip.AddrPort]*nebula.Control),
+		vpnControls:  make(map[netip.Addr]*nebula.Control),
+		inNat:        make(map[netip.AddrPort]*nebula.Control),
+		outNat:       make(map[string]netip.AddrPort),
+		flow:         []flowEntry{},
+		ignoreFlows:  []ignoreFlow{},
 		fn:           filepath.Join("mermaid", fmt.Sprintf("%s.md", t.Name())),
 		t:            t,
 		cancelRender: cancel,
@@ -102,7 +133,7 @@ func NewR(t *testing.T, controls ...*nebula.Control) *R {
 	for _, c := range controls {
 		addr := c.GetUDPAddr()
 		if _, ok := r.controls[addr]; ok {
-			panic("Duplicate listen address: " + addr)
+			panic("Duplicate listen address: " + addr.String())
 		}
 
 		r.vpnControls[c.GetVpnIp()] = c
@@ -119,6 +150,7 @@ func NewR(t *testing.T, controls ...*nebula.Control) *R {
 			case <-ctx.Done():
 				return
 			case <-clockSource.C:
+				r.renderHostmaps("clock tick")
 				r.renderFlow()
 			}
 		}
@@ -131,13 +163,13 @@ func NewR(t *testing.T, controls ...*nebula.Control) *R {
 // It does not look at the addr attached to the instance.
 // If a route is used, this will behave like a NAT for the return path.
 // Rewriting the source ip:port to what was last sent to from the origin
-func (r *R) AddRoute(ip net.IP, port uint16, c *nebula.Control) {
+func (r *R) AddRoute(ip netip.Addr, port uint16, c *nebula.Control) {
 	r.Lock()
 	defer r.Unlock()
 
-	inAddr := net.JoinHostPort(ip.String(), fmt.Sprintf("%v", port))
+	inAddr := netip.AddrPortFrom(ip, port)
 	if _, ok := r.inNat[inAddr]; ok {
-		panic("Duplicate listen address inNat: " + inAddr)
+		panic("Duplicate listen address inNat: " + inAddr.String())
 	}
 	r.inNat[inAddr] = c
 }
@@ -148,14 +180,24 @@ func (r *R) RenderFlow() {
 	r.renderFlow()
 }
 
+// CancelFlowLogs stops flow logs from being tracked and destroys any logs already collected
+func (r *R) CancelFlowLogs() {
+	r.cancelRender()
+	r.flow = nil
+}
+
 func (r *R) renderFlow() {
+	if r.flow == nil {
+		return
+	}
+
 	f, err := os.OpenFile(r.fn, os.O_CREATE|os.O_TRUNC|os.O_RDWR, 0644)
 	if err != nil {
 		panic(err)
 	}
 
-	var participants = map[string]struct{}{}
-	var participansVals []string
+	var participants = map[netip.AddrPort]struct{}{}
+	var participantsVals []string
 
 	fmt.Fprintln(f, "```mermaid")
 	fmt.Fprintln(f, "sequenceDiagram")
@@ -171,19 +213,24 @@ func (r *R) renderFlow() {
 			continue
 		}
 		participants[addr] = struct{}{}
-		sanAddr := strings.Replace(addr, ":", "#58;", 1)
-		participansVals = append(participansVals, sanAddr)
+		sanAddr := strings.Replace(addr.String(), ":", "-", 1)
+		participantsVals = append(participantsVals, sanAddr)
 		fmt.Fprintf(
 			f, "    participant %s as Nebula: %s<br/>UDP: %s\n",
 			sanAddr, e.packet.from.GetVpnIp(), sanAddr,
 		)
 	}
 
+	if len(participantsVals) > 2 {
+		// Get the first and last participantVals for notes
+		participantsVals = []string{participantsVals[0], participantsVals[len(participantsVals)-1]}
+	}
+
 	// Print packets
 	h := &header.H{}
 	for _, e := range r.flow {
 		if e.packet == nil {
-			fmt.Fprintf(f, "    note over %s: %s\n", strings.Join(participansVals, ", "), e.note)
+			//fmt.Fprintf(f, "    note over %s: %s\n", strings.Join(participantsVals, ", "), e.note)
 			continue
 		}
 
@@ -202,15 +249,77 @@ func (r *R) renderFlow() {
 			}
 
 			fmt.Fprintf(f,
-				"    %s%s%s: %s(%s), counter: %v\n",
-				strings.Replace(p.from.GetUDPAddr(), ":", "#58;", 1),
+				"    %s%s%s: %s(%s), index %v, counter: %v\n",
+				strings.Replace(p.from.GetUDPAddr().String(), ":", "-", 1),
 				line,
-				strings.Replace(p.to.GetUDPAddr(), ":", "#58;", 1),
-				h.TypeName(), h.SubTypeName(), h.MessageCounter,
+				strings.Replace(p.to.GetUDPAddr().String(), ":", "-", 1),
+				h.TypeName(), h.SubTypeName(), h.RemoteIndex, h.MessageCounter,
 			)
 		}
 	}
 	fmt.Fprintln(f, "```")
+
+	for _, g := range r.additionalGraphs {
+		fmt.Fprintf(f, "## %s\n", g.title)
+		fmt.Fprintln(f, "```mermaid")
+		fmt.Fprintln(f, g.content)
+		fmt.Fprintln(f, "```")
+	}
+}
+
+// IgnoreFlow tells the router to stop recording future flows that matches the provided criteria.
+// messageType and subType will target nebula underlay packets while tun will target nebula overlay packets
+// NOTE: This is a very broad system, if you set tun to true then no more tun traffic will be rendered
+func (r *R) IgnoreFlow(messageType header.MessageType, subType header.MessageSubType, tun NullBool) {
+	r.Lock()
+	defer r.Unlock()
+	r.ignoreFlows = append(r.ignoreFlows, ignoreFlow{
+		tun,
+		messageType,
+		subType,
+	})
+}
+
+func (r *R) RenderHostmaps(title string, controls ...*nebula.Control) {
+	r.Lock()
+	defer r.Unlock()
+
+	s := renderHostmaps(controls...)
+	if len(r.additionalGraphs) > 0 {
+		lastGraph := r.additionalGraphs[len(r.additionalGraphs)-1]
+		if lastGraph.content == s && lastGraph.title == title {
+			// Ignore this rendering if it matches the last rendering added
+			// This is useful if you want to track rendering changes
+			return
+		}
+	}
+
+	r.additionalGraphs = append(r.additionalGraphs, mermaidGraph{
+		title:   title,
+		content: s,
+	})
+}
+
+func (r *R) renderHostmaps(title string) {
+	c := maps.Values(r.controls)
+	sort.SliceStable(c, func(i, j int) bool {
+		return c[i].GetVpnIp().Compare(c[j].GetVpnIp()) > 0
+	})
+
+	s := renderHostmaps(c...)
+	if len(r.additionalGraphs) > 0 {
+		lastGraph := r.additionalGraphs[len(r.additionalGraphs)-1]
+		if lastGraph.content == s {
+			// Ignore this rendering if it matches the last rendering added
+			// This is useful if you want to track rendering changes
+			return
+		}
+	}
+
+	r.additionalGraphs = append(r.additionalGraphs, mermaidGraph{
+		title:   title,
+		content: s,
+	})
 }
 
 // InjectFlow can be used to record packet flow if the test is handling the routing on its own.
@@ -222,6 +331,10 @@ func (r *R) InjectFlow(from, to *nebula.Control, p *udp.Packet) {
 }
 
 func (r *R) Log(arg ...any) {
+	if r.flow == nil {
+		return
+	}
+
 	r.Lock()
 	r.flow = append(r.flow, flowEntry{note: fmt.Sprint(arg...)})
 	r.t.Log(arg...)
@@ -229,6 +342,10 @@ func (r *R) Log(arg ...any) {
 }
 
 func (r *R) Logf(format string, arg ...any) {
+	if r.flow == nil {
+		return
+	}
+
 	r.Lock()
 	r.flow = append(r.flow, flowEntry{note: fmt.Sprintf(format, arg...)})
 	r.t.Logf(format, arg...)
@@ -236,14 +353,40 @@ func (r *R) Logf(format string, arg ...any) {
 }
 
 // unlockedInjectFlow is used by the router to record a packet has been transmitted, the packet is returned and
-// should be marked as received AFTER it has been placed on the receivers channel
+// should be marked as received AFTER it has been placed on the receivers channel.
+// If flow logs have been disabled this function will return nil
 func (r *R) unlockedInjectFlow(from, to *nebula.Control, p *udp.Packet, tun bool) *packet {
+	if r.flow == nil {
+		return nil
+	}
+
+	r.renderHostmaps(fmt.Sprintf("Packet %v", len(r.flow)))
+
+	if len(r.ignoreFlows) > 0 {
+		var h header.H
+		err := h.Parse(p.Data)
+		if err != nil {
+			panic(err)
+		}
+
+		for _, i := range r.ignoreFlows {
+			if !tun {
+				if i.messageType == h.Type && i.subType == h.Subtype {
+					return nil
+				}
+			} else if i.tun.HasValue && i.tun.IsTrue {
+				return nil
+			}
+		}
+	}
+
 	fp := &packet{
 		from:   from,
 		to:     to,
 		packet: p.Copy(),
 		tun:    tun,
 	}
+
 	r.flow = append(r.flow, flowEntry{packet: fp})
 	return fp
 }
@@ -275,17 +418,15 @@ func (r *R) RouteUntilTxTun(sender *nebula.Control, receiver *nebula.Control) []
 
 		// Nope, lets push the sender along
 		case p := <-udpTx:
-			outAddr := sender.GetUDPAddr()
 			r.Lock()
-			inAddr := net.JoinHostPort(p.ToIp.String(), fmt.Sprintf("%v", p.ToPort))
-			c := r.getControl(outAddr, inAddr, p)
+			c := r.getControl(sender.GetUDPAddr(), p.To, p)
 			if c == nil {
 				r.Unlock()
 				panic("No control for udp tx")
 			}
 			fp := r.unlockedInjectFlow(sender, c, p, false)
 			c.InjectUDPPacket(p)
-			fp.rx = true
+			fp.WasReceived()
 			r.Unlock()
 		}
 	}
@@ -334,17 +475,14 @@ func (r *R) RouteForAllUntilTxTun(receiver *nebula.Control) []byte {
 		} else {
 			// we are a udp tx, route and continue
 			p := rx.Interface().(*udp.Packet)
-			outAddr := cm[x].GetUDPAddr()
-
-			inAddr := net.JoinHostPort(p.ToIp.String(), fmt.Sprintf("%v", p.ToPort))
-			c := r.getControl(outAddr, inAddr, p)
+			c := r.getControl(cm[x].GetUDPAddr(), p.To, p)
 			if c == nil {
 				r.Unlock()
 				panic("No control for udp tx")
 			}
 			fp := r.unlockedInjectFlow(cm[x], c, p, false)
 			c.InjectUDPPacket(p)
-			fp.rx = true
+			fp.WasReceived()
 		}
 		r.Unlock()
 	}
@@ -364,12 +502,10 @@ func (r *R) RouteExitFunc(sender *nebula.Control, whatDo ExitFunc) {
 			panic(err)
 		}
 
-		outAddr := sender.GetUDPAddr()
-		inAddr := net.JoinHostPort(p.ToIp.String(), fmt.Sprintf("%v", p.ToPort))
-		receiver := r.getControl(outAddr, inAddr, p)
+		receiver := r.getControl(sender.GetUDPAddr(), p.To, p)
 		if receiver == nil {
 			r.Unlock()
-			panic("Can't route for host: " + inAddr)
+			panic("Can't RouteExitFunc for host: " + p.To.String())
 		}
 
 		e := whatDo(p, receiver)
@@ -381,14 +517,14 @@ func (r *R) RouteExitFunc(sender *nebula.Control, whatDo ExitFunc) {
 		case RouteAndExit:
 			fp := r.unlockedInjectFlow(sender, receiver, p, false)
 			receiver.InjectUDPPacket(p)
-			fp.rx = true
+			fp.WasReceived()
 			r.Unlock()
 			return
 
 		case KeepRouting:
 			fp := r.unlockedInjectFlow(sender, receiver, p, false)
 			receiver.InjectUDPPacket(p)
-			fp.rx = true
+			fp.WasReceived()
 
 		default:
 			panic(fmt.Sprintf("Unknown exitFunc return: %v", e))
@@ -439,19 +575,19 @@ func (r *R) InjectUDPPacket(sender, receiver *nebula.Control, packet *udp.Packet
 
 	fp := r.unlockedInjectFlow(sender, receiver, packet, false)
 	receiver.InjectUDPPacket(packet)
-	fp.rx = true
+	fp.WasReceived()
 }
 
 // RouteForUntilAfterToAddr will route for sender and return only after it sees and sends a packet destined for toAddr
 // finish can be any of the exitType values except `keepRouting`, the default value is `routeAndExit`
 // If the router doesn't have the nebula controller for that address, we panic
-func (r *R) RouteForUntilAfterToAddr(sender *nebula.Control, toAddr *net.UDPAddr, finish ExitType) {
+func (r *R) RouteForUntilAfterToAddr(sender *nebula.Control, toAddr netip.AddrPort, finish ExitType) {
 	if finish == KeepRouting {
 		finish = RouteAndExit
 	}
 
 	r.RouteExitFunc(sender, func(p *udp.Packet, r *nebula.Control) ExitType {
-		if p.ToIp.Equal(toAddr.IP) && p.ToPort == uint16(toAddr.Port) {
+		if p.To == toAddr {
 			return finish
 		}
 
@@ -485,13 +621,10 @@ func (r *R) RouteForAllExitFunc(whatDo ExitFunc) {
 		r.Lock()
 
 		p := rx.Interface().(*udp.Packet)
-
-		outAddr := cm[x].GetUDPAddr()
-		inAddr := net.JoinHostPort(p.ToIp.String(), fmt.Sprintf("%v", p.ToPort))
-		receiver := r.getControl(outAddr, inAddr, p)
+		receiver := r.getControl(cm[x].GetUDPAddr(), p.To, p)
 		if receiver == nil {
 			r.Unlock()
-			panic("Can't route for host: " + inAddr)
+			panic("Can't RouteForAllExitFunc for host: " + p.To.String())
 		}
 
 		e := whatDo(p, receiver)
@@ -503,14 +636,14 @@ func (r *R) RouteForAllExitFunc(whatDo ExitFunc) {
 		case RouteAndExit:
 			fp := r.unlockedInjectFlow(cm[x], receiver, p, false)
 			receiver.InjectUDPPacket(p)
-			fp.rx = true
+			fp.WasReceived()
 			r.Unlock()
 			return
 
 		case KeepRouting:
 			fp := r.unlockedInjectFlow(cm[x], receiver, p, false)
 			receiver.InjectUDPPacket(p)
-			fp.rx = true
+			fp.WasReceived()
 
 		default:
 			panic(fmt.Sprintf("Unknown exitFunc return: %v", e))
@@ -552,41 +685,26 @@ func (r *R) FlushAll() {
 
 		p := rx.Interface().(*udp.Packet)
 
-		outAddr := cm[x].GetUDPAddr()
-		inAddr := net.JoinHostPort(p.ToIp.String(), fmt.Sprintf("%v", p.ToPort))
-		receiver := r.getControl(outAddr, inAddr, p)
+		receiver := r.getControl(cm[x].GetUDPAddr(), p.To, p)
 		if receiver == nil {
 			r.Unlock()
-			panic("Can't route for host: " + inAddr)
+			panic("Can't FlushAll for host: " + p.To.String())
 		}
+		receiver.InjectUDPPacket(p)
 		r.Unlock()
 	}
 }
 
 // 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 string, p *udp.Packet) *nebula.Control {
-	if newAddr, ok := r.outNat[fromAddr+":"+toAddr]; ok {
-		p.FromIp = newAddr.IP
-		p.FromPort = uint16(newAddr.Port)
+func (r *R) getControl(fromAddr, toAddr netip.AddrPort, p *udp.Packet) *nebula.Control {
+	if newAddr, ok := r.outNat[fromAddr.String()+":"+toAddr.String()]; ok {
+		p.From = newAddr
 	}
 
 	c, ok := r.inNat[toAddr]
 	if ok {
-		sHost, sPort, err := net.SplitHostPort(toAddr)
-		if err != nil {
-			panic(err)
-		}
-
-		port, err := strconv.Atoi(sPort)
-		if err != nil {
-			panic(err)
-		}
-
-		r.outNat[c.GetUDPAddr()+":"+fromAddr] = net.UDPAddr{
-			IP:   net.ParseIP(sHost),
-			Port: port,
-		}
+		r.outNat[c.GetUDPAddr().String()+":"+fromAddr.String()] = toAddr
 		return c
 	}
 
@@ -601,8 +719,9 @@ func (r *R) formatUdpPacket(p *packet) string {
 	}
 
 	from := "unknown"
-	if c, ok := r.vpnControls[iputil.Ip2VpnIp(v4.SrcIP)]; ok {
-		from = c.GetUDPAddr()
+	srcAddr, _ := netip.AddrFromSlice(v4.SrcIP)
+	if c, ok := r.vpnControls[srcAddr]; ok {
+		from = c.GetUDPAddr().String()
 	}
 
 	udp := packet.Layer(layers.LayerTypeUDP).(*layers.UDP)
@@ -613,8 +732,8 @@ func (r *R) formatUdpPacket(p *packet) string {
 	data := packet.ApplicationLayer()
 	return fmt.Sprintf(
 		"    %s-->>%s: src port: %v<br/>dest port: %v<br/>data: \"%v\"\n",
-		strings.Replace(from, ":", "#58;", 1),
-		strings.Replace(p.to.GetUDPAddr(), ":", "#58;", 1),
+		strings.Replace(from, ":", "-", 1),
+		strings.Replace(p.to.GetUDPAddr().String(), ":", "-", 1),
 		udp.SrcPort,
 		udp.DstPort,
 		string(data.Payload()),

e2e/tunnels_test.go

@@ -0,0 +1,55 @@
+//go:build e2e_testing
+// +build e2e_testing
+
+package e2e
+
+import (
+	"testing"
+	"time"
+
+	"github.com/slackhq/nebula/e2e/router"
+)
+
+func TestDropInactiveTunnels(t *testing.T) {
+	// The goal of this test is to ensure the shortest inactivity timeout will close the tunnel on both sides
+	// under ideal conditions
+	ca, _, caKey, _ := NewTestCaCert(time.Now(), time.Now().Add(10*time.Minute), nil, nil, []string{})
+	myControl, myVpnIpNet, myUdpAddr, _ := newSimpleServer(ca, caKey, "me", "10.128.0.1/24", m{"tunnels": m{"drop_inactive": true, "inactivity_timeout": "5s"}})
+	theirControl, theirVpnIpNet, theirUdpAddr, _ := newSimpleServer(ca, caKey, "them", "10.128.0.2/24", m{"tunnels": m{"drop_inactive": true, "inactivity_timeout": "10m"}})
+
+	// Share our underlay information
+	myControl.InjectLightHouseAddr(theirVpnIpNet.Addr(), theirUdpAddr)
+	theirControl.InjectLightHouseAddr(myVpnIpNet.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.Addr(), theirVpnIpNet.Addr(), myControl, theirControl, r)
+
+	r.Log("Go inactive and wait for the tunnels to get dropped")
+	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*30 {
+			t.Fatal("Tunnel should have been declared inactive after 5 seconds and before 30 seconds")
+		}
+
+		time.Sleep(1 * time.Second)
+		r.FlushAll()
+	}
+
+	r.Logf("Inactive tunnels were dropped within %v", time.Since(waitStart))
+	myControl.Stop()
+	theirControl.Stop()
+}

examples/config.yml

@@ -11,7 +11,7 @@ pki:
   #blocklist:
   #  - c99d4e650533b92061b09918e838a5a0a6aaee21eed1d12fd937682865936c72
   # disconnect_invalid is a toggle to force a client to be disconnected if the certificate is expired or invalid.
-  #disconnect_invalid: false
+  #disconnect_invalid: true
 
 # The static host map defines a set of hosts with fixed IP addresses on the internet (or any network).
 # A host can have multiple fixed IP addresses defined here, and nebula will try each when establishing a tunnel.
@@ -21,6 +21,19 @@ pki:
 static_host_map:
   "192.168.100.1": ["100.64.22.11:4242"]
 
+# The static_map config stanza can be used to configure how the static_host_map behaves.
+#static_map:
+  # cadence determines how frequently DNS is re-queried for updated IP addresses when a static_host_map entry contains
+  # a DNS name.
+  #cadence: 30s
+
+  # network determines the type of IP addresses to ask the DNS server for. The default is "ip4" because nodes typically
+  # do not know their public IPv4 address. Connecting to the Lighthouse via IPv4 allows the Lighthouse to detect the
+  # public address. Other valid options are "ip6" and "ip" (returns both.)
+  #network: ip4
+
+  # lookup_timeout is the DNS query timeout.
+  #lookup_timeout: 250ms
 
 lighthouse:
   # am_lighthouse is used to enable lighthouse functionality for a node. This should ONLY be true on nodes
@@ -47,8 +60,9 @@ lighthouse:
   # allowed. You can provide CIDRs here with `true` to allow and `false` to
   # deny. The most specific CIDR rule applies to each remote. If all rules are
   # "allow", the default will be "deny", and vice-versa. If both "allow" and
-  # "deny" rules are present, then you MUST set a rule for "0.0.0.0/0" as the
-  # default.
+  # "deny" IPv4 rules are present, then you MUST set a rule for "0.0.0.0/0" as
+  # the default. Similarly if both "allow" and "deny" IPv6 rules are present,
+  # then you MUST set a rule for "::/0" as the default.
   #remote_allow_list:
     # Example to block IPs from this subnet from being used for remote IPs.
     #"172.16.0.0/12": false
@@ -58,7 +72,7 @@ lighthouse:
     #"10.0.0.0/8": false
     #"10.42.42.0/24": true
 
-  # EXPERIMENTAL: This option my change or disappear in the future.
+  # EXPERIMENTAL: This option may change or disappear in the future.
   # Optionally allows the definition of remote_allow_list blocks
   # specific to an inside VPN IP CIDR.
   #remote_allow_ranges:
@@ -90,10 +104,23 @@ lighthouse:
     #- "1.1.1.1:4242"
     #- "1.2.3.4:0" # port will be replaced with the real listening port
 
+  # EXPERIMENTAL: This option may change or disappear in the future.
+  # This setting allows us to "guess" what the remote might be for a host
+  # while we wait for the lighthouse response.
+  #calculated_remotes:
+    # For any Nebula IPs in 10.0.10.0/24, this will apply the mask and add
+    # the calculated IP as an initial remote (while we wait for the response
+    # from the lighthouse). Both CIDRs must have the same mask size.
+    # For example, Nebula IP 10.0.10.123 will have a calculated remote of
+    # 192.168.1.123
+    #10.0.10.0/24:
+      #- mask: 192.168.1.0/24
+      #  port: 4242
+
 # Port Nebula will be listening on. The default here is 4242. For a lighthouse node, the port should be defined,
 # however using port 0 will dynamically assign a port and is recommended for roaming nodes.
 listen:
-  # To listen on both any ipv4 and ipv6 use "[::]"
+  # To listen on both any ipv4 and ipv6 use "::"
   host: 0.0.0.0
   port: 4242
   # Sets the max number of packets to pull from the kernel for each syscall (under systems that support recvmmsg)
@@ -128,20 +155,23 @@ punchy:
   # Default is false
   #respond: true
 
-  # delays a punch response for misbehaving NATs, default is 1 second, respond must be true to take effect
+  # delays a punch response for misbehaving NATs, default is 1 second.
   #delay: 1s
 
+  # set the delay before attempting punchy.respond. Default is 5 seconds. respond must be true to take effect.
+  #respond_delay: 5s
+
 # Cipher allows you to choose between the available ciphers for your network. Options are chachapoly or aes
 # IMPORTANT: this value must be identical on ALL NODES/LIGHTHOUSES. We do not/will not support use of different ciphers simultaneously!
-#cipher: chachapoly
+#cipher: aes
 
 # Preferred ranges is used to define a hint about the local network ranges, which speeds up discovering the fastest
 # path to a network adjacent nebula node.
-# NOTE: the previous option "local_range" only allowed definition of a single range
-# and has been deprecated for "preferred_ranges"
+# This setting is reloadable.
 #preferred_ranges: ["172.16.0.0/24"]
 
-# sshd can expose informational and administrative functions via ssh this is a
+# sshd can expose informational and administrative functions via ssh. This can expose informational and administrative
+# functions, and allows manual tweaking of various network settings when debugging or testing.
 #sshd:
   # Toggles the feature
   #enabled: true
@@ -150,12 +180,15 @@ punchy:
   # A file containing the ssh host private key to use
   # A decent way to generate one: ssh-keygen -t ed25519 -f ssh_host_ed25519_key -N "" < /dev/null
   #host_key: ./ssh_host_ed25519_key
-  # A file containing a list of authorized public keys
+  # Authorized users and their public keys
   #authorized_users:
     #- user: steeeeve
       # keys can be an array of strings or single string
       #keys:
         #- "ssh public key string"
+  # 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"
 
 # EXPERIMENTAL: relay support for networks that can't establish direct connections.
 relay:
@@ -177,7 +210,7 @@ tun:
   disabled: false
   # Name of the device. If not set, a default will be chosen by the OS.
   # For macOS: if set, must be in the form `utun[0-9]+`.
-  # For FreeBSD: Required to be set, must be in the form `tun[0-9]+`.
+  # For NetBSD: Required to be set, must be in the form `tun[0-9]+`
   dev: nebula1
   # Toggles forwarding of local broadcast packets, the address of which depends on the ip/mask encoded in pki.cert
   drop_local_broadcast: false
@@ -187,26 +220,37 @@ tun:
   tx_queue: 500
   # Default MTU for every packet, safe setting is (and the default) 1300 for internet based traffic
   mtu: 1300
+
   # Route based MTU overrides, you have known vpn ip paths that can support larger MTUs you can increase/decrease them here
   routes:
     #- mtu: 8800
     #  route: 10.0.0.0/16
+
   # Unsafe routes allows you to route traffic over nebula to non-nebula nodes
   # Unsafe routes should be avoided unless you have hosts/services that cannot run nebula
   # NOTE: The nebula certificate of the "via" node *MUST* have the "route" defined as a subnet in its certificate
-  # `mtu` will default to tun mtu if this option is not specified
-  # `metric` will default to 0 if this option is not specified
+  # `mtu`: will default to tun mtu if this option is not specified
+  # `metric`: will default to 0 if this option is not specified
+  # `install`: will default to true, controls whether this route is installed in the systems routing table.
+  # This setting is reloadable.
   unsafe_routes:
     #- route: 172.16.1.0/24
     #  via: 192.168.100.99
     #  mtu: 1300
     #  metric: 100
+    #  install: 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
 
 # TODO
 # Configure logging level
 logging:
-  # panic, fatal, error, warning, info, or debug. Default is info
+  # 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
   format: text
@@ -251,13 +295,45 @@ logging:
   # A 100ms interval with the default 10 retries will give a handshake 5.5 seconds to resolve before timing out
   #try_interval: 100ms
   #retries: 20
+
+  # query_buffer is the size of the buffer channel for querying lighthouses
+  #query_buffer: 64
+
   # trigger_buffer is the size of the buffer channel for quickly sending handshakes
   # after receiving the response for lighthouse queries
   #trigger_buffer: 64
 
+# Tunnel manager settings
+#tunnels:
+  # drop_inactive controls whether inactive tunnels are maintained or dropped after the inactive_timeout period has
+  # elapsed.
+  # In general, it is a good idea to enable this setting. It will be enabled by default in a future release.
+  # This setting is reloadable
+  #drop_inactive: false
+
+  # inactivity_timeout controls how long a tunnel MUST NOT see any inbound or outbound traffic before being considered
+  # inactive and eligible to be dropped.
+  # This setting is reloadable
+  #inactivity_timeout: 10m
 
 # Nebula security group configuration
 firewall:
+  # Action to take when a packet is not allowed by the firewall rules.
+  # Can be one of:
+  #   `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 port unreachable packet.
+  outbound_action: drop
+  inbound_action: drop
+
+  # Controls the default value for local_cidr. Default is true, will be deprecated after v1.9 and defaulted to false.
+  # This setting only affects nebula hosts with subnets encoded in their certificate. A nebula host acting as an
+  # unsafe router with `default_local_cidr_any: true` will expose their unsafe routes to every inbound rule regardless
+  # of the actual destination for the packet. Setting this to false requires each inbound rule to contain a `local_cidr`
+  # if the intention is to allow traffic to flow to an unsafe route.
+  #default_local_cidr_any: false
+
   conntrack:
     tcp_timeout: 12m
     udp_timeout: 3m
@@ -265,14 +341,17 @@ firewall:
 
   # The firewall is default deny. There is no way to write a deny rule.
   # 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)
+  # 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`
   #   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 CIDR, `0.0.0.0/0` is any.
+  #   cidr: a remote CIDR, `0.0.0.0/0` is any.
+  #   local_cidr: a local CIDR, `0.0.0.0/0` is any. This could be used to filter destinations when using unsafe_routes.
+  #      Default is `any` unless the certificate contains subnets and then the default is the ip issued in the certificate
+  #      if `default_local_cidr_any` is false, otherwise its `any`.
   #   ca_name: An issuing CA name
   #   ca_sha: An issuing CA shasum
 
@@ -294,3 +373,10 @@ firewall:
       groups:
         - laptop
         - home
+
+    # Expose a subnet (unsafe route) to hosts with the group remote_client
+    # This example assume you have a subnet of 192.168.100.1/24 or larger encoded in the certificate
+    - port: 8080
+      proto: tcp
+      group: remote_client
+      local_cidr: 192.168.100.1/24

examples/go_service/main.go

@@ -0,0 +1,109 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"net"
+
+	"github.com/slackhq/nebula/config"
+	"github.com/slackhq/nebula/service"
+)
+
+func main() {
+	if err := run(); err != nil {
+		log.Fatalf("%+v", err)
+	}
+}
+
+func run() error {
+	configStr := `
+tun:
+  user: true
+
+static_host_map:
+  '192.168.100.1': ['localhost:4242']
+
+listen:
+  host: 0.0.0.0
+  port: 4241
+
+lighthouse:
+  am_lighthouse: false
+  interval: 60
+  hosts:
+    - '192.168.100.1'
+
+firewall:
+  outbound:
+    # Allow all outbound traffic from this node
+    - port: any
+      proto: any
+      host: any
+
+  inbound:
+    # Allow icmp between any nebula hosts
+    - port: any
+      proto: icmp
+      host: any
+    - port: any
+      proto: any
+      host: any
+
+pki:
+  ca: /home/rice/Developer/nebula-config/ca.crt
+  cert: /home/rice/Developer/nebula-config/app.crt
+  key: /home/rice/Developer/nebula-config/app.key
+`
+	var cfg config.C
+	if err := cfg.LoadString(configStr); err != nil {
+		return err
+	}
+	svc, err := service.New(&cfg)
+	if err != nil {
+		return err
+	}
+
+	ln, err := svc.Listen("tcp", ":1234")
+	if err != nil {
+		return err
+	}
+	for {
+		conn, err := ln.Accept()
+		if err != nil {
+			log.Printf("accept error: %s", err)
+			break
+		}
+		defer func(conn net.Conn) {
+			_ = conn.Close()
+		}(conn)
+
+		log.Printf("got connection")
+
+		_, err = conn.Write([]byte("hello world\n"))
+		if err != nil {
+			log.Printf("write error: %s", err)
+		}
+
+		scanner := bufio.NewScanner(conn)
+		for scanner.Scan() {
+			message := scanner.Text()
+			_, err = fmt.Fprintf(conn, "echo: %q\n", message)
+			if err != nil {
+				log.Printf("write error: %s", err)
+			}
+			log.Printf("got message %q", message)
+		}
+
+		if err := scanner.Err(); err != nil {
+			log.Printf("scanner error: %s", err)
+			break
+		}
+	}
+
+	_ = svc.Close()
+	if err := svc.Wait(); err != nil {
+		return err
+	}
+	return nil
+}

examples/quickstart-vagrant/README.md

@@ -1,138 +0,0 @@
-# Quickstart Guide
-
-This guide is intended to bring up a vagrant environment with 1 lighthouse and 2 generic hosts running nebula.
-
-## Creating the virtualenv for ansible
-
-Within the `quickstart/` directory, do the following
-
-```
-# make a virtual environment
-virtualenv venv
-
-# get into the virtualenv
-source venv/bin/activate
-
-# install ansible
-pip install -r requirements.yml
-```
-
-## Bringing up the vagrant environment
-
-A plugin that is used for the Vagrant environment is `vagrant-hostmanager`
-
-To install, run
-
-```
-vagrant plugin install vagrant-hostmanager
-```
-
-All hosts within the Vagrantfile are brought up with
-
-`vagrant up` 
-
-Once the boxes are up, go into the `ansible/` directory and deploy the playbook by running
-
-`ansible-playbook playbook.yml -i inventory -u vagrant`
-
-## Testing within the vagrant env
-
-Once the ansible run is done, hop onto a vagrant box 
-
-`vagrant ssh generic1.vagrant`
-
-or specifically
-
-`ssh vagrant@<ip-address-in-vagrant-file` (password for the vagrant user on the boxes is `vagrant`)
-
-Some quick tests once the vagrant boxes are up are to ping from `generic1.vagrant` to `generic2.vagrant` using 
-their respective nebula ip address. 
-
-```
-vagrant@generic1:~$ ping 10.168.91.220
-PING 10.168.91.220 (10.168.91.220) 56(84) bytes of data.
-64 bytes from 10.168.91.220: icmp_seq=1 ttl=64 time=241 ms
-64 bytes from 10.168.91.220: icmp_seq=2 ttl=64 time=0.704 ms
-```
-
-You can further verify that the allowed nebula firewall rules work by ssh'ing from 1 generic box to the other.
-
-`ssh vagrant@<nebula-ip-address>`  (password for the vagrant user on the boxes is `vagrant`)
-
-See `/etc/nebula/config.yml` on a box for firewall rules.
-
-To see full handshakes and hostmaps, change the logging config of `/etc/nebula/config.yml` on the vagrant boxes from 
-info to debug.
-
-You can watch nebula logs by running
-
-```
-sudo journalctl -fu nebula
-```
-
-Refer to the nebula src code directory's README for further instructions on configuring nebula.
-
-## Troubleshooting
-
-### Is nebula up and running?
-
-Run and verify that 
-
-```
-ifconfig
-``` 
-
-shows you an interface with the name `nebula1` being up.
-
-```
-vagrant@generic1:~$ ifconfig nebula1
-nebula1: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST>  mtu 1300
-        inet 10.168.91.210  netmask 255.128.0.0  destination 10.168.91.210
-        inet6 fe80::aeaf:b105:e6dc:936c  prefixlen 64  scopeid 0x20<link>
-        unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  txqueuelen 500  (UNSPEC)
-        RX packets 2  bytes 168 (168.0 B)
-        RX errors 0  dropped 0  overruns 0  frame 0
-        TX packets 11  bytes 600 (600.0 B)
-        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
-```
-
-### Connectivity
-
-Are you able to ping other boxes on the private nebula network?
-
-The following are the private nebula ip addresses of the vagrant env 
-
-```
-generic1.vagrant [nebula_ip] 10.168.91.210
-generic2.vagrant [nebula_ip] 10.168.91.220 
-lighthouse1.vagrant [nebula_ip] 10.168.91.230
-```
-
-Try pinging generic1.vagrant to and from any other box using its nebula ip above.
-
-Double check the nebula firewall rules under /etc/nebula/config.yml to make sure that connectivity is allowed for your use-case if on a specific port.
-
-```
-vagrant@lighthouse1:~$ grep -A21 firewall /etc/nebula/config.yml 
-firewall:
-  conntrack:
-    tcp_timeout: 12m
-    udp_timeout: 3m
-    default_timeout: 10m
-
-  inbound:
-    - proto: icmp
-      port: any
-      host: any
-    - proto: any
-      port: 22
-      host: any
-    - proto: any
-      port: 53
-      host: any
-
-  outbound:
-    - proto: any
-      port: any
-      host: any
-```

examples/quickstart-vagrant/Vagrantfile

@@ -1,40 +0,0 @@
-Vagrant.require_version ">= 2.2.6"
-
-nodes = [
-  { :hostname => 'generic1.vagrant', :ip => '172.11.91.210', :box => 'bento/ubuntu-18.04', :ram => '512', :cpus => 1},
-  { :hostname => 'generic2.vagrant', :ip => '172.11.91.220', :box => 'bento/ubuntu-18.04', :ram => '512', :cpus => 1},
-  { :hostname => 'lighthouse1.vagrant', :ip => '172.11.91.230', :box => 'bento/ubuntu-18.04', :ram => '512', :cpus => 1},
-]
-
-Vagrant.configure("2") do |config|
-
-  config.ssh.insert_key = false
-
-  if Vagrant.has_plugin?('vagrant-cachier')
-    config.cache.enable :apt
-  else
-    printf("** Install vagrant-cachier plugin to speedup deploy: `vagrant plugin install vagrant-cachier`.**\n")
-  end
-
-  if Vagrant.has_plugin?('vagrant-hostmanager')
-    config.hostmanager.enabled = true
-    config.hostmanager.manage_host = true
-    config.hostmanager.include_offline = true
-  else
-    config.vagrant.plugins = "vagrant-hostmanager"
-  end
-
- nodes.each do |node|
-    config.vm.define node[:hostname] do |node_config|
-      node_config.vm.box = node[:box]
-      node_config.vm.hostname = node[:hostname]
-      node_config.vm.network :private_network, ip: node[:ip]
-      node_config.vm.provider :virtualbox do |vb|
-        vb.memory = node[:ram]
-        vb.cpus = node[:cpus]
-        vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
-        vb.customize ['guestproperty', 'set', :id, '/VirtualBox/GuestAdd/VBoxService/--timesync-set-threshold', 10000]
-      end
-    end
-  end
-end

examples/quickstart-vagrant/ansible/ansible.cfg

@@ -1,4 +0,0 @@
-[defaults]
-host_key_checking = False
-private_key_file = ~/.vagrant.d/insecure_private_key
-become = yes

examples/quickstart-vagrant/ansible/filter_plugins/to_nebula_ip.py

@@ -1,21 +0,0 @@
-#!/usr/bin/python
-
-
-class FilterModule(object):
-    def filters(self):
-        return {
-            'to_nebula_ip': self.to_nebula_ip,
-            'map_to_nebula_ips': self.map_to_nebula_ips,
-        }
-
-    def to_nebula_ip(self, ip_str):
-        ip_list = list(map(int, ip_str.split(".")))
-        ip_list[0] = 10
-        ip_list[1] = 168
-        ip = '.'.join(map(str, ip_list))
-        return ip
-
-    def map_to_nebula_ips(self, ip_strs):
-        ip_list = [ self.to_nebula_ip(ip_str) for ip_str in ip_strs ]
-        ips = ', '.join(ip_list)
-        return ips

examples/quickstart-vagrant/ansible/inventory

@@ -1,11 +0,0 @@
-[all]
-generic1.vagrant
-generic2.vagrant
-lighthouse1.vagrant
-
-[generic]
-generic1.vagrant
-generic2.vagrant
-
-[lighthouse]
-lighthouse1.vagrant 

examples/quickstart-vagrant/ansible/playbook.yml

@@ -1,23 +0,0 @@
----
-- name: test connection to vagrant boxes
-  hosts: all
-  tasks:
-    - debug: msg=ok
-
-- name: build nebula binaries locally 
-  connection: local
-  hosts: localhost
-  tasks:
-    - command: chdir=../../../ make build/linux-amd64/"{{ item }}"
-      with_items:
-        - nebula
-        - nebula-cert
-  tags:
-    - build-nebula
-   
-- name: install nebula on all vagrant hosts
-  hosts: all
-  become: yes
-  gather_facts: yes
-  roles:
-    - nebula

examples/quickstart-vagrant/ansible/roles/nebula/defaults/main.yml

@@ -1,3 +0,0 @@
----
-# defaults file for nebula
-nebula_config_directory: "/etc/nebula/"

examples/quickstart-vagrant/ansible/roles/nebula/files/systemd.nebula.service

@@ -1,13 +0,0 @@
-[Unit]
-Description=nebula
-Wants=basic.target
-After=basic.target network.target
-
-[Service]
-SyslogIdentifier=nebula
-ExecReload=/bin/kill -HUP $MAINPID
-ExecStart=/usr/local/bin/nebula -config /etc/nebula/config.yml
-Restart=always
-
-[Install]
-WantedBy=multi-user.target

examples/quickstart-vagrant/ansible/roles/nebula/files/vagrant-test-ca.crt

@@ -1,5 +0,0 @@
------BEGIN NEBULA CERTIFICATE-----
-CkAKDm5lYnVsYSB0ZXN0IENBKNXC1NYFMNXIhO0GOiCmVYeZ9tkB4WEnawmkrca+
-hsAg9otUFhpAowZeJ33KVEABEkAORybHQUUyVFbKYzw0JHfVzAQOHA4kwB1yP9IV
-KpiTw9+ADz+wA+R5tn9B+L8+7+Apc+9dem4BQULjA5mRaoYN
------END NEBULA CERTIFICATE-----

examples/quickstart-vagrant/ansible/roles/nebula/files/vagrant-test-ca.key

@@ -1,4 +0,0 @@
------BEGIN NEBULA ED25519 PRIVATE KEY-----
-FEXZKMSmg8CgIODR0ymUeNT3nbnVpMi7nD79UgkCRHWmVYeZ9tkB4WEnawmkrca+
-hsAg9otUFhpAowZeJ33KVA==
------END NEBULA ED25519 PRIVATE KEY-----

examples/quickstart-vagrant/ansible/roles/nebula/handlers/main.yml

@@ -1,5 +0,0 @@
----
-# handlers file for nebula
-
-- name: restart nebula
-  service: name=nebula state=restarted

examples/quickstart-vagrant/ansible/roles/nebula/tasks/main.yml

@@ -1,62 +0,0 @@
----
-# tasks file for nebula
-
-- name: get the vagrant network interface and set fact
-  set_fact:
-    vagrant_ifce: "ansible_{{ ansible_interfaces | difference(['lo',ansible_default_ipv4.alias]) | sort | first }}"
-  tags:
-    - nebula-conf
-  
-- name: install built nebula binary
-  copy: src="../../../../../build/linux-amd64/{{ item }}" dest="/usr/local/bin" mode=0755
-  with_items:
-    - nebula
-    - nebula-cert
-
-- name: create nebula config directory
-  file: path="{{ nebula_config_directory }}" state=directory mode=0755
- 
-- name:  temporarily copy over root.crt and root.key to sign
-  copy: src={{ item }} dest=/opt/{{ item }}
-  with_items:
-    - vagrant-test-ca.key
-    - vagrant-test-ca.crt
-
-- name: remove previously signed host certificate
-  file: dest=/etc/nebula/{{ item }} state=absent
-  with_items:
-    - host.crt
-    - host.key
-
-- name: sign using the root key
-  command: nebula-cert sign -ca-crt /opt/vagrant-test-ca.crt -ca-key /opt/vagrant-test-ca.key -duration 4320h -groups vagrant -ip {{ hostvars[inventory_hostname][vagrant_ifce]['ipv4']['address'] | to_nebula_ip }}/9 -name {{ ansible_hostname }}.nebula -out-crt /etc/nebula/host.crt -out-key /etc/nebula/host.key
-
-- name: remove root.key used to sign
-  file: dest=/opt/{{ item }} state=absent
-  with_items:
-    - vagrant-test-ca.key
-
-- name: write the content of the trusted ca certificate
-  copy: src="vagrant-test-ca.crt" dest="/etc/nebula/vagrant-test-ca.crt"
-  notify: restart nebula
-
-- name: Create config directory
-  file: path="{{ nebula_config_directory }}" owner=root group=root mode=0755 state=directory
-
-- name: nebula config
-  template: src=config.yml.j2 dest="/etc/nebula/config.yml" mode=0644 owner=root group=root
-  notify: restart nebula
-  tags:
-    - nebula-conf
-
-- name: nebula systemd
-  copy: src=systemd.nebula.service dest="/etc/systemd/system/nebula.service" mode=0644 owner=root group=root
-  register: addconf
-  notify: restart nebula
-
-- name: maybe reload systemd
-  shell: systemctl daemon-reload
-  when: addconf.changed
-
-- name: nebula running
-  service: name="nebula" state=started enabled=yes

examples/quickstart-vagrant/ansible/roles/nebula/templates/config.yml.j2

@@ -1,85 +0,0 @@
-pki:
-  ca: /etc/nebula/vagrant-test-ca.crt
-  cert: /etc/nebula/host.crt
-  key: /etc/nebula/host.key
-
-# Port Nebula will be listening on
-listen:
-  host: 0.0.0.0
-  port: 4242
-
-# sshd can expose informational and administrative functions via ssh
-sshd:
-  # Toggles the feature
-  enabled: true
-  # Host and port to listen on
-  listen: 127.0.0.1:2222
-  # A file containing the ssh host private key to use
-  host_key: /etc/ssh/ssh_host_ed25519_key
-  # A file containing a list of authorized public keys
-  authorized_users:
-{% for user in nebula_users %}
-    - user: {{ user.name }}
-      keys:
-{% for key in user.ssh_auth_keys %}
-        - "{{ key }}"
-{% endfor %}
-{% endfor %}
-
-local_range: 10.168.0.0/16
-
-static_host_map:
-# lighthouse
-  {{ hostvars[groups['lighthouse'][0]][vagrant_ifce]['ipv4']['address'] | to_nebula_ip }}: ["{{ hostvars[groups['lighthouse'][0]][vagrant_ifce]['ipv4']['address']}}:4242"]
-
-default_route: "0.0.0.0"
-
-lighthouse:
-{% if 'lighthouse' in group_names %}
-  am_lighthouse: true
-  serve_dns: true
-{% else %}
-  am_lighthouse: false
-{% endif %}
-  interval: 60
-{% if 'generic' in group_names %}
-  hosts:
-    - {{ hostvars[groups['lighthouse'][0]][vagrant_ifce]['ipv4']['address'] | to_nebula_ip }}
-{% endif %}
-  
-# Configure the private interface
-tun:
-  dev: nebula1
-  # Sets MTU of the tun dev.
-  # MTU of the tun must be smaller than the MTU of the eth0 interface
-  mtu: 1300
-
-# TODO
-# Configure logging level
-logging:
-  level: info
-  format: json
-
-firewall:
-  conntrack:
-    tcp_timeout: 12m
-    udp_timeout: 3m
-    default_timeout: 10m
-
-  inbound:
-    - proto: icmp
-      port: any
-      host: any
-    - proto: any
-      port: 22
-      host: any
-{% if "lighthouse" in groups %}
-    - proto: any
-      port: 53
-      host: any
-{% endif %}
-
-  outbound:
-    - proto: any
-      port: any
-      host: any

examples/quickstart-vagrant/ansible/roles/nebula/vars/main.yml

@@ -1,7 +0,0 @@
----
-# vars file for nebula
-
-nebula_users:
-  - name: user1
-    ssh_auth_keys: 
-      - "ed25519 place-your-ssh-public-key-here"