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/* * Copyright (c) 1993, 1994 * 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: pcap.h,v 1.15 94/06/14 20:03:34 leres Exp $ (LBL) */ #ifndef lib_pcap_h #define lib_pcap_h #include <sys/types.h> #include <sys/time.h> #include <net/bpf.h> #include <stdio.h> #define PCAP_VERSION_MAJOR 2 /* * Define the minor version to be 5 for SJP mods. * MINOR 5 should still be able to successfully parse * MINOR 4 files. */ #define PCAP_VERSION_MINOR 4 #ifdef SJP_MODS #define SJP_PCAP_VERSION_MINOR 5 #endif #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 && !defined(__BPF_H__) typedef long bpf_int32; typedef u_long bpf_u_int32; #endif typedef struct pcap pcap_t; typedef struct pcap_dumper pcap_dumper_t; #ifdef SJP_MODS struct pppstat { u_int ppp_ibytes; /* bytes received */ u_int ppp_ipackets; /* packets received */ u_int ppp_ierrors; /* receive errors */ u_int ppp_obytes; /* bytes sent */ u_int ppp_opackets; /* packets sent */ u_int ppp_oerrors; /* transmit errors */ }; struct vjstat { u_int vjs_packets; /* outbound packets */ u_int vjs_compressed; /* outbound compressed packets */ u_int vjs_searches; /* searches for connection state */ u_int vjs_misses; /* times couldn't find conn. state */ u_int vjs_uncompressedin; /* inbound uncompressed packets */ u_int vjs_compressedin; /* inbound compressed packets */ u_int vjs_errorin; /* inbound unknown type packets */ u_int vjs_tossed; /* inbound packets tossed because of error */ }; struct ppp_stats { struct pppstat p; /* basic PPP statistics */ struct vjstat vj; /* VJ header compression statistics */ }; struct compstat { u_int unc_bytes; /* total uncompressed bytes */ u_int unc_packets; /* total uncompressed packets */ u_int comp_bytes; /* compressed bytes */ u_int comp_packets; /* compressed packets */ u_int inc_bytes; /* incompressible bytes */ u_int inc_packets; /* incompressible packets */ u_int ratio; /* recent compression ratio << 8 */ }; struct ppp_comp_stats { struct compstat c; /* packet compression statistics */ struct compstat d; /* packet decompression statistics */ }; struct ifpppstatsreq { char ifr_name[16]; struct ppp_stats stats; }; struct ifpppcstatsreq { char ifr_name[16]; struct ppp_comp_stats stats; }; #endif /* * 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 longs 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_*) */ #ifdef SJP_MODS char date[26]; /* Date as used by ctime() */ struct timeval session_start; /* Start of PPP session */ struct timeval session_end; /* End of PPP session */ struct ppp_stats stats; /* PPP stats */ struct ppp_comp_stats comp_stats; /* Compression stats */ char *hinfo, *email_addr; /* Placeholders for the info */ bpf_u_int32 ps_recv; /* Packets received */ bpf_u_int32 ps_drop; /* Packets dropped */ bpf_u_int32 m_speed; /* Modem speed */ bpf_u_int32 hinfo_len; /* Lenght of hostinfo, info follows header */ bpf_u_int32 email_len; /* Lenght of email address, info follows hostinfo */ #endif }; /* * 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 *, u_long *, u_long *, char *); pcap_t *pcap_open_live(char *, int, int, int, char *); pcap_t *pcap_open_offline(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, u_long); /* 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 *, char *); void pcap_dump_close(pcap_dumper_t *, pcap_t *p); 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
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