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Diffstat (limited to 'lib/libpcap/libpcap/pcap_offline_filter.3pcap')
-rw-r--r-- | lib/libpcap/libpcap/pcap_offline_filter.3pcap | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/lib/libpcap/libpcap/pcap_offline_filter.3pcap b/lib/libpcap/libpcap/pcap_offline_filter.3pcap new file mode 100644 index 0000000..724f836 --- /dev/null +++ b/lib/libpcap/libpcap/pcap_offline_filter.3pcap @@ -0,0 +1,55 @@ +.\" Copyright (c) 1994, 1996, 1997 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that: (1) source code distributions +.\" retain the above copyright notice and this paragraph in its entirety, (2) +.\" distributions including binary code include the above copyright notice and +.\" this paragraph in its entirety in the documentation or other materials +.\" provided with the distribution, and (3) all advertising materials mentioning +.\" features or use of this software display the following acknowledgement: +.\" ``This product includes software developed by the University of California, +.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +.\" the University nor the names of its contributors may be used to endorse +.\" or promote products derived from this software without specific prior +.\" written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" +.TH PCAP_OFFLINE_FILTER 3PCAP "7 April 2014" +.SH NAME +pcap_offline_filter \- check whether a filter matches a packet +.SH SYNOPSIS +.nf +.ft B +#include <pcap/pcap.h> +.ft +.LP +.ft B +int pcap_offline_filter(const struct bpf_program *fp, +.ti +8 +const struct pcap_pkthdr *h, const u_char *pkt) +.ft +.fi +.SH DESCRIPTION +.B pcap_offline_filter() +checks whether a filter matches a packet. +.I fp +is a pointer to a +.I bpf_program +struct, usually the result of a call to +.BR pcap_compile(3PCAP) . +.I h +points to the +.I pcap_pkthdr +structure for the packet, and +.I pkt +points to the data in the packet. +.SH RETURN VALUE +.B pcap_offline_filter() +returns the return value of the filter program. This will be zero if +the packet doesn't match the filter and non-zero if the packet matches +the filter. +.SH SEE ALSO +pcap(3PCAP) |