mirror of
https://github.com/ShadowKatStudios/OC-Minitel.git
synced 2024-11-26 03:48:06 +11:00
71 lines
2.5 KiB
Lua
71 lines
2.5 KiB
Lua
local imtp = Proto("imt","InterMinitel")
|
|
local imt = require "interminitel"
|
|
|
|
local pid = ProtoField.string("imt.packet_id","Packet ID")
|
|
local ptype = ProtoField.int32("imt.packet_type","Packet type")
|
|
local dest = ProtoField.string("imt.destination","Destination address")
|
|
local src = ProtoField.string("imt.source","Source address")
|
|
local port = ProtoField.int32("imt.port","Port")
|
|
local data = ProtoField.string("imt.data","Data")
|
|
local conv = ProtoField.int32("imt.conversation","Conversation")
|
|
local cport = ProtoField.int32("imt.conversation_port","Conversation Port")
|
|
|
|
local seg = ProtoField.string("imt.segment","Segment")
|
|
|
|
imtp.fields = {pid, ptype, dest, src, port, data, conv, cport}
|
|
|
|
local conversations = {}
|
|
local function checkConversation(p,c)
|
|
if p[5] == c.port and c.addresses[p[4]] and c.addresses[p[3]] then
|
|
return true
|
|
end
|
|
return false
|
|
end
|
|
local conversationPackets = {}
|
|
|
|
function imtp.dissector(buffer,pinfo,tree)
|
|
pinfo.cols.protocol=imtp.name
|
|
local d = buffer():string()
|
|
local dp, sp = imt.decodePacket(d)
|
|
local subtree = tree:add(imtp,"InterMinitel Data")
|
|
for k,v in pairs(dp) do
|
|
subtree:add(imtp.fields[k], buffer(sp[k], tostring(v):len()), v)
|
|
end
|
|
pinfo.cols.src = dp[4]
|
|
pinfo.cols.dst = dp[3]
|
|
pinfo.cols.src_port = dp[5]
|
|
pinfo.cols.dst_port = dp[5]
|
|
if dp[2] == "0" then
|
|
pinfo.cols.info = "Unreliable packet."
|
|
elseif dp[2] == "1" then
|
|
pinfo.cols.info = "Reliable packet."
|
|
elseif dp[2] == "2" then
|
|
pinfo.cols.info = "Acknowledgement packet for '"..dp[6].."'"
|
|
end
|
|
if dp[6] == "openstream" then
|
|
local t = {addresses = {}, iport = dp[5]}
|
|
t.addresses[dp[3]] = true
|
|
t.addresses[dp[4]] = true
|
|
t.id = conversationPackets[dp[1]] or #conversations+1
|
|
print("Conversation started by "..dp[4].." talking to "..dp[3].." on port "..tostring(dp[5]))
|
|
conversations[t.id] = t
|
|
subtree:add(conv, t.id):set_generated()
|
|
subtree:add(cport, t.iport):set_generated()
|
|
conversationPackets[dp[1]] = t.id
|
|
end
|
|
for k,v in pairs(conversations) do
|
|
if not v.port and v.iport == dp[5] and tonumber(dp[6]) and v.addresses[dp[3]] and v.addresses[dp[4]] then
|
|
v.port = tostring(tonumber(dp[6]))
|
|
print(string.format("Conversation %d port set to %d",k,v.port))
|
|
subtree:add(conv, v.id):set_generated()
|
|
subtree:add(cport, v.iport):set_generated()
|
|
conversationPackets[dp[1]] = v.id
|
|
elseif checkConversation(dp,v) then
|
|
print(dp[1].." is part of "..tostring(k))
|
|
subtree:add(conv, v.id):set_generated()
|
|
subtree:add(cport, v.iport):set_generated()
|
|
conversationPackets[dp[1]] = v.id
|
|
end
|
|
end
|
|
end
|