wireshark: fix Lua 5.4 bitwise operation (#1776 )

The Nebula Wireshark dissector uses bit32.band() when parsing the Nebula packet type. On Wireshark builds using Lua 5.4, bit32 is not available, which causes dissection to fail with: Lua Error: nebula.lua:65: attempt to index a nil value (global 'bit32') Wireshark bundles Lua BitOp and exposes it globally as bit for Lua dissectors. This is the documented API for maximum backwards compatibility across supported Lua versions. Use bit.band() instead of bit32.band().
2026-08-15 19:56:58 +02:00 · 2026-07-01 16:12:14 -05:00
1 changed files with 1 additions and 1 deletions
@@ -62,7 +62,7 @@ function nebula.dissector(tvbuf, pktinfo, root)
    tree:add(pf_version, tvbuf:range(0,1))
    local type = tree:add(pf_type,    tvbuf:range(0,1))

-    local nebula_type = bit32.band(tvbuf:range(0,1):uint(), 0x0F)
+    local nebula_type = bit.band(tvbuf:range(0,1):uint(), 0x0F)
    if nebula_type == 0 then
        local stage = tvbuf(8,8):uint64()
        tree:add(pf_subtype_handshake, tvbuf:range(1,1))