143 lines
4.9 KiB
C
143 lines
4.9 KiB
C
/* $NetBSD: pcap.h,v 1.8 2000/10/06 16:39:24 thorpej Exp $ */
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/*
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* Copyright (c) 1993, 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.h,v 1.20 96/07/12 19:24:15 leres Exp (LBL)
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*/
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#ifndef lib_pcap_h
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#define lib_pcap_h
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#include <sys/types.h>
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#include <sys/time.h>
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#include <net/bpf.h>
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#include <stdio.h>
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#define PCAP_VERSION_MAJOR 2
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#define PCAP_VERSION_MINOR 4
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#define PCAP_ERRBUF_SIZE 256
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/*
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* Compatibility for systems that have a bpf.h that
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* predates the bpf typedefs for 64-bit support.
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*/
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#if BPF_RELEASE - 0 < 199406
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typedef int32_t bpf_int32;
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typedef u_int32_t bpf_u_int32;
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#endif
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typedef struct pcap pcap_t;
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typedef struct pcap_dumper pcap_dumper_t;
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/*
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* The first record in the file contains saved values for some
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* of the flags used in the printout phases of tcpdump.
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* Many fields here are 32 bit ints so compilers won't insert unwanted
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* padding; these files need to be interchangeable across architectures.
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*/
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struct pcap_file_header {
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bpf_u_int32 magic;
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u_short version_major;
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u_short version_minor;
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bpf_int32 thiszone; /* gmt to local correction */
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bpf_u_int32 sigfigs; /* accuracy of timestamps */
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bpf_u_int32 snaplen; /* max length saved portion of each pkt */
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bpf_u_int32 linktype; /* data link type (DLT_*) */
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};
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/*
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* Each packet in the dump file is prepended with this generic header.
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* This gets around the problem of different headers for different
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* packet interfaces.
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*/
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struct pcap_pkthdr {
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struct 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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/*
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* As returned by the pcap_stats()
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*/
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struct pcap_stat {
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u_int ps_recv; /* number of packets received */
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u_int ps_drop; /* number of packets dropped */
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u_int ps_ifdrop; /* drops by interface XXX not yet supported */
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};
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typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *,
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const u_char *);
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char *pcap_lookupdev(char *);
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int pcap_lookupnet(char *, bpf_u_int32 *, bpf_u_int32 *, char *);
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pcap_t *pcap_open_live(char *, int, int, int, char *);
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pcap_t *pcap_open_offline(char *, char *);
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void pcap_close(pcap_t *);
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int pcap_loop(pcap_t *, int, pcap_handler, u_char *);
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int pcap_dispatch(pcap_t *, int, pcap_handler, u_char *);
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const u_char*
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pcap_next(pcap_t *, struct pcap_pkthdr *);
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int pcap_stats(pcap_t *, struct pcap_stat *);
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int pcap_setfilter(pcap_t *, struct bpf_program *);
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void pcap_perror(pcap_t *, char *);
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const char*
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pcap_strerror(int);
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char *pcap_geterr(pcap_t *);
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int pcap_compile(pcap_t *, struct bpf_program *, char *, int,
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bpf_u_int32);
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int pcap_compile_nopcap(int, int, struct bpf_program *, char *,
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int, bpf_u_int32, char *);
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/* XXX */
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int pcap_freecode(pcap_t *, struct bpf_program *);
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int pcap_datalink(pcap_t *);
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int pcap_snapshot(pcap_t *);
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int pcap_is_swapped(pcap_t *);
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int pcap_major_version(pcap_t *);
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int pcap_minor_version(pcap_t *);
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/* XXX */
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FILE *pcap_file(pcap_t *);
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int pcap_fileno(pcap_t *);
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pcap_dumper_t *pcap_dump_open(pcap_t *, char *);
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void pcap_dump_close(pcap_dumper_t *);
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void pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *);
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/* XXX this guy lives in the bpf tree */
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u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int);
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char *bpf_image(struct bpf_insn *, int);
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#endif
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