Packet parsing module in perl

balakrishnan has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: Packet parsing module in perl by jettero (Monsignor) on Feb 26, 2009 at 16:26 UTC
Hopefully for you the Net::Pcap stuff can be made to read the dump files, because if it does it'll do everything you want and more. -Paul	[reply]
Re: Packet parsing module in perl by zentara (Cardinal) on Feb 26, 2009 at 16:38 UTC
How about a Packet Parsing Package in Perl? Say it three times fast and you become Larry Wall for a day. :-) Oh....and before any of you complain that you said it 3 times fast, and didn't turn into Larry Wall, it's becuase you didn't say it fast* enough!* I'm not really a human, but I play one on earth My Petition to the Great Cosmic Conciousness	[reply]
Re: Packet parsing module in perl by zwon (Abbot) on Feb 26, 2009 at 17:58 UTC
Probably NetPacket is what you need. Upd: link fixed	[reply]
Re^2: Packet parsing module in perl by balakrishnan (Monk) on Feb 27, 2009 at 03:00 UTC
How do i can extract the packet arrival time from a packet?	[reply]
Re^3: Packet parsing module in perl by jettero (Monsignor) on Feb 27, 2009 at 12:07 UTC
I don't think the actual packets have timestamps -- could be wrong -- but I know the libpcap files do contain them. I think your best bet (as mentioned above) is to use the Net::Pcap library to read the source file and get the timestamps from there. It seems it does have a `pcap_open_offline` method, which I don't know how to use, that probably reads the file in. How to get the actual timestamps from the packets: `sub process_packet { my($user_data, $header, $packet) = @_; print "time: $header->{tv_sec}\n"; } # The header information is a reference to a hash containing the fol +lowing fields. # # * "len" - the total length of the packet. # * "caplen" - the actual captured length of the packet # * "tv_sec" - seconds value of the packet timestamp. # * "tv_usec" - microseconds value of the packet timestamp.` [download] -Paul	[reply] [d/l] [select]
Re: Packet parsing module in perl by Anonymous Monk on Feb 26, 2009 at 17:55 UTC
You have done C programs to do everything related to this already, what is the problem with that C program?. Everything you have already done in C, why do you go for Perl now?.	[reply]