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26 lines
1.0 KiB
Lua
26 lines
1.0 KiB
Lua
-- test case : nfqws2 --qnum 200 --debug --lua-init=@zapret-lib.lua --lua-init=@zapret-pcap.lua --writeable=zdir --in-range=a --lua-desync=pcap:file=test.pcap
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-- arg : file=<filename> - file for storing pcap data. if --writeable is specified and filename is relative - append filename to writeable path
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function pcap(ctx, desync)
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if not desync.arg.file or #desync.arg.file==0 then
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error("pcap requires 'file' parameter")
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end
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local fn_cache_name = desync.func_instance.."_fn"
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if not _G[fn_cache_name] then
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_G[fn_cache_name] = writeable_file_name(desync.arg.file)
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end
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local f = io.open(_G[fn_cache_name], "a")
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if not f then
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error("pcap: could not write to '".._G[fn_cache_name].."'")
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end
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local pos = f:seek()
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if (pos==0) then
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-- create pcap header
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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")
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end
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local raw = raw_packet(ctx)
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local sec, nsec = clock_gettime();
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f:write(bu32(sec)..bu32(nsec)..bu32(#raw)..bu32(#raw))
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f:write(raw)
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f:close()
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end
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