mirror of
https://github.com/ShadowKatStudios/OC-Minitel.git
synced 2024-11-23 18:48:06 +11:00
36 lines
696 B
Lua
36 lines
696 B
Lua
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local pcap = {}
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local function uint32(n)
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s = ""
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for i = 3, 0, -1 do
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s=s..string.char((n>>(8*i))%256)
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end
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return s
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end
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local function uint16(n)
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s = ""
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for i = 1, 0, -1 do
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s=s..string.char((n>>(8*i))%256)
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end
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return s
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end
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function pcap.header(type)
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local s=uint32(0xa1b2c3d4) -- magic number
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s=s..uint16(2) -- major version
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s=s..uint16(4) -- minor version
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s=s..uint32(0) -- timezone
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s=s..uint32(0) -- accuracy
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s=s..uint32(2^16) -- snaplen
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s=s..uint32(type or 147)
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return s
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end
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function pcap.packet(d)
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local s = uint32(os.time()) -- timestamp
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s=s..uint32(0) -- usec
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s=s..uint32(d:len()) -- included length
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s=s..uint32(d:len()) -- actual length
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return s..d
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end
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return pcap
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