| /* |
| * 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 1.31 2000-10-28 00:01:31 guy 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> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #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. |
| * |
| * Do not change the layout of this structure, in any way (this includes |
| * changes that only affect the length of fields in this structure). |
| * |
| * Also, do not change the interpretation of any of the members of this |
| * structure, in any way (this includes using values other than |
| * LINKTYPE_ values, as defined in "savefile.c", in the "linktype" |
| * field). |
| * |
| * Instead: |
| * |
| * introduce a new structure for the new format, if the layout |
| * of the structure changed; |
| * |
| * send mail to "tcpdump-workers@tcpdump.org", requesting a new |
| * magic number for your new capture file format, and, when |
| * you get the new magic number, put it in "savefile.c"; |
| * |
| * use that magic number for save files with the changed file |
| * header; |
| * |
| * make the code in "savefile.c" capable of reading files with |
| * the old file header as well as files with the new file header |
| * (using the magic number to determine the header format). |
| * |
| * Then supply the changes to "patches@tcpdump.org", so that future |
| * versions of libpcap and programs that use it (such as tcpdump) will |
| * be able to read your new capture file format. |
| */ |
| 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 (LINKTYPE_*) */ |
| }; |
| |
| /* |
| * 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_dead(int, int); |
| 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); |
| int pcap_compile_nopcap(int, int, struct bpf_program *, |
| char *, int, bpf_u_int32); |
| void pcap_freecode(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); |
| int bpf_validate(struct bpf_insn *f, int len); |
| char *bpf_image(struct bpf_insn *, int); |
| void bpf_dump(struct bpf_program *, int); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |