4a7fa50e38
(if you have files written by 64bit arch, sorry, we can't read those... there's no magic number or anything like that) sync with tcpdump.org change.
165 lines
4.8 KiB
C
165 lines
4.8 KiB
C
/* $NetBSD: pcap-int.h,v 1.8 2001/02/07 17:35:56 itojun Exp $ */
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/*
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* Copyright (c) 1994, 1995, 1996
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Computer Systems
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* Engineering Group at Lawrence Berkeley Laboratory.
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* 4. Neither the name of the University nor of the Laboratory may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#) Header: pcap-int.h,v 1.18 96/11/27 18:43:09 leres Exp (LBL)
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*/
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#ifndef pcap_int_h
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#define pcap_int_h
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#include <pcap.h>
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/*
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* Savefile
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*/
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struct pcap_sf {
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FILE *rfile;
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int swapped;
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int hdrsize;
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int version_major;
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int version_minor;
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u_char *base;
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};
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struct pcap_md {
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struct pcap_stat stat;
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/*XXX*/
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int use_bpf;
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u_long TotPkts; /* can't oflow for 79 hrs on ether */
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u_long TotAccepted; /* count accepted by filter */
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u_long TotDrops; /* count of dropped packets */
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long TotMissed; /* missed by i/f during this run */
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long OrigMissed; /* missed by i/f before this run */
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#ifdef linux
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int pad;
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int skip;
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char *device;
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#endif
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};
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struct pcap {
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int fd;
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int snapshot;
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int linktype;
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int tzoff; /* timezone offset */
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int offset; /* offset for proper alignment */
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struct pcap_sf sf;
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struct pcap_md md;
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/*
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* Read buffer.
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*/
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int bufsize;
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u_char *buffer;
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u_char *bp;
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int cc;
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/*
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* Place holder for pcap_next().
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*/
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u_char *pkt;
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/*
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* Placeholder for filter code if bpf not in kernel.
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*/
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struct bpf_program fcode;
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char errbuf[PCAP_ERRBUF_SIZE];
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};
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/*
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* This is a timeval as stored in disk in a dumpfile.
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* It has to use the same types everywhere, independent of the actual
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* `struct timeval'
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*/
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struct pcap_timeval {
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bpf_int32 tv_sec; /* seconds */
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bpf_int32 tv_usec; /* microseconds */
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};
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/*
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* How a `pcap_pkthdr' is actually stored in the dumpfile.
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*
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* Do not change the format of this structure, in any way (this includes
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* changes that only affect the length of fields in this structure),
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* and do not make the time stamp anything other than seconds and
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* microseconds (e.g., seconds and nanoseconds). Instead:
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*
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* introduce a new structure for the new format;
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*
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* send mail to "tcpdump-workers@tcpdump.org", requesting a new
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* magic number for your new capture file format, and, when
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* you get the new magic number, put it in "savefile.c";
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*
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* use that magic number for save files with the changed record
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* header;
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*
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* make the code in "savefile.c" capable of reading files with
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* the old record header as well as files with the new record header
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* (using the magic number to determine the header format).
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*
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* Then supply the changes to "patches@tcpdump.org", so that future
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* versions of libpcap and programs that use it (such as tcpdump) will
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* be able to read your new capture file format.
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*/
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struct pcap_sf_pkthdr {
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struct pcap_timeval ts; /* time stamp */
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bpf_u_int32 caplen; /* length of portion present */
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bpf_u_int32 len; /* length this packet (off wire) */
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};
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int yylex(void);
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#ifndef min
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#define min(a, b) ((a) > (b) ? (b) : (a))
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#endif
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/* XXX should these be in pcap.h? */
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int pcap_offline_read(pcap_t *, int, pcap_handler, u_char *);
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int pcap_read(pcap_t *, int cnt, pcap_handler, u_char *);
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/* ULTRIX, Digital UNIX & NetBSD pad to make everything line
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up on a nice boundary */
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#if defined(ultrix) || defined(__alpha) || defined(__NetBSD__)
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#define PCAP_FDDIPAD 3
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#endif
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/* XXX */
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extern int pcap_fddipad;
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#endif
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