From b11ddf8a9b0d30bf759abf01afcf2894e79857b1 Mon Sep 17 00:00:00 2001 From: mcr Date: Thu, 7 Oct 1999 23:46:40 +0000 Subject: Initial revision --- pcap.h | 137 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 pcap.h (limited to 'pcap.h') diff --git a/pcap.h b/pcap.h new file mode 100644 index 0000000..cffbad8 --- /dev/null +++ b/pcap.h @@ -0,0 +1,137 @@ +/* + * Copyright (c) 1993, 1994, 1995, 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 the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#) $Header: /tcpdump/master/libpcap/pcap.h,v 1.21 1999-10-07 23:46:40 mcr Exp $ (LBL) + */ + +#ifndef lib_pcap_h +#define lib_pcap_h + +#include +#include + +#include + +#include + +#define PCAP_VERSION_MAJOR 2 +#define PCAP_VERSION_MINOR 4 + +#define PCAP_ERRBUF_SIZE 256 + +/* + * Compatibility for systems that have a bpf.h that + * predates the bpf typedefs for 64-bit support. + */ +#if BPF_RELEASE - 0 < 199406 +typedef int bpf_int32; +typedef u_int bpf_u_int32; +#endif + +typedef struct pcap pcap_t; +typedef struct pcap_dumper pcap_dumper_t; + +/* + * The first record in the file contains saved values for some + * of the flags used in the printout phases of tcpdump. + * Many fields here are 32 bit ints so compilers won't insert unwanted + * padding; these files need to be interchangeable across architectures. + */ +struct pcap_file_header { + bpf_u_int32 magic; + u_short version_major; + u_short version_minor; + bpf_int32 thiszone; /* gmt to local correction */ + bpf_u_int32 sigfigs; /* accuracy of timestamps */ + bpf_u_int32 snaplen; /* max length saved portion of each pkt */ + bpf_u_int32 linktype; /* data link type (DLT_*) */ +}; + +/* + * Each packet in the dump file is prepended with this generic header. + * This gets around the problem of different headers for different + * packet interfaces. + */ +struct pcap_pkthdr { + struct timeval ts; /* time stamp */ + bpf_u_int32 caplen; /* length of portion present */ + bpf_u_int32 len; /* length this packet (off wire) */ +}; + +/* + * As returned by the pcap_stats() + */ +struct pcap_stat { + u_int ps_recv; /* number of packets received */ + u_int ps_drop; /* number of packets dropped */ + u_int ps_ifdrop; /* drops by interface XXX not yet supported */ +}; + +typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *, + const u_char *); + +char *pcap_lookupdev(char *); +int pcap_lookupnet(char *, bpf_u_int32 *, bpf_u_int32 *, char *); +pcap_t *pcap_open_live(char *, int, int, int, char *); +pcap_t *pcap_open_offline(const char *, char *); +void pcap_close(pcap_t *); +int pcap_loop(pcap_t *, int, pcap_handler, u_char *); +int pcap_dispatch(pcap_t *, int, pcap_handler, u_char *); +const u_char* + pcap_next(pcap_t *, struct pcap_pkthdr *); +int pcap_stats(pcap_t *, struct pcap_stat *); +int pcap_setfilter(pcap_t *, struct bpf_program *); +void pcap_perror(pcap_t *, char *); +char *pcap_strerror(int); +char *pcap_geterr(pcap_t *); +int pcap_compile(pcap_t *, struct bpf_program *, char *, int, + bpf_u_int32); +/* XXX */ +int pcap_freecode(pcap_t *, struct bpf_program *); +int pcap_datalink(pcap_t *); +int pcap_snapshot(pcap_t *); +int pcap_is_swapped(pcap_t *); +int pcap_major_version(pcap_t *); +int pcap_minor_version(pcap_t *); + +/* XXX */ +FILE *pcap_file(pcap_t *); +int pcap_fileno(pcap_t *); + +pcap_dumper_t *pcap_dump_open(pcap_t *, const char *); +void pcap_dump_close(pcap_dumper_t *); +void pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *); + +/* XXX this guy lives in the bpf tree */ +u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int); +char *bpf_image(struct bpf_insn *, int); +#endif -- cgit v1.2.3