179 lines
6.2 KiB
C
179 lines
6.2 KiB
C
/*
|
|
* 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
|