27 lines
1.2 KiB
Text
27 lines
1.2 KiB
Text
# Bittorrent - P2P filesharing / publishing tool - http://www.bittorrent.com
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# Pattern attributes: good slow notsofast undermatch
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# Protocol groups: p2p open_source
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# Wiki: http://www.protocolinfo.org/wiki/Bittorrent
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#
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# This pattern has been tested and is believed to work well.
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# It will, however, not work on bittorrent streams that are encrypted, since
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# it's impossible to match encrypted data (unless the encryption is extremely
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# weak, like rot13 or something...).
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bittorrent
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# Does not attempt to match the HTTP download of the tracker
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# 0x13 is the length of "bittorrent protocol"
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# Second two bits match UDP wierdness
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# Next bit matches something Azureus does
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# Ditto on the next bit. Could also match on "user-agent: azureus", but that's in the next
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# packet and perhaps this will match multiple clients.
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# Recently the ^ was removed from before \x13. I think this was an accident,
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# so I have restored it.
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# This is not a valid GNU basic regular expression (but that's ok).
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^(\x13bittorrent protocol|azver\x01$|get /scrape\?info_hash=)|d1:ad2:id20:|\x08'7P\)[RP]
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# This pattern is "fast", but won't catch as much
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#^(\x13bittorrent protocol|azver\x01$|get /scrape\?info_hash=)
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