gandc/zapret2
Template
1
0
Fork 0
mirror of https://github.com/bol-van/zapret2.git synced 2026-03-19 07:45:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

zapret-pcap.lua

Browse Source
This commit is contained in:
bol-van
2025-11-26 15:30:10 +03:00
parent 1cfec4d737
commit 9eaf346253
4 changed files with 80 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
lua/zapret-pcap.lua Normal file
View File

@@ -0,0 +1,22 @@
-- test case : nfqws2 --qnum 200 --debug --lua-init=@zapret-lib.lua --lua-init=@zapret-pcap.lua:file=test.pcap --writeable=zdir
-- arg : file=<filename> - file for storing pcap data. if --writeable is specified and filename is relative - append filename to writeable path
function pcap(ctx, desync)
if not desync.arg.file or #desync.arg.file==0 then
error("pcap requires 'file' parameter")
end
local fn = writeable_file_name(desync.arg.file)
local f = io.open(fn, "a")
if not f then
error("pcap: could not write to '"..fn.."'")
end
local pos = f:seek()
if (pos==0) then
-- create pcap header
f:write("\xA1\xB2\x3C\x4D\x00\x02\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x00\x00\x00\x00\x65")
end
local raw = raw_packet(ctx)
local sec, nsec = clock_gettime();
f:write(bu32(sec)..bu32(nsec)..bu32(#raw)..bu32(#raw))
f:write(raw)
f:close()
end