/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- *//* * 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 1.52.2.6 2006/02/09 22:26:49 guy Exp $ (LBL) */#ifndef lib_pcap_h#define lib_pcap_h#if defined(WIN32)  #include <pcap-stdinc.h>#elif defined(MSDOS)  #include <sys/types.h>  #include <sys/socket.h>  /* u_int, u_char etc. */#else /* UN*X */  #include <sys/types.h>  #include <sys/time.h>#endif /* WIN32/MSDOS/UN*X */#ifndef PCAP_DONT_INCLUDE_PCAP_BPF_H#include <pcap-bpf.h>#endif#include <stdio.h>#ifdef HAVE_REMOTE	// We have to define the SOCKET here, although it has been defined in sockutils.h	// This is to avoid the distribution of the 'sockutils.h' file around	// (for example in the WinPcap developer's pack)	#ifndef SOCKET		#ifdef WIN32			#define SOCKET unsigned int		#else			#define SOCKET int		#endif	#endif#endif#ifdef __cplusplusextern "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 < 199406typedef	int bpf_int32;typedef	u_int bpf_u_int32;#endiftypedef struct pcap pcap_t;typedef struct pcap_dumper pcap_dumper_t;typedef struct pcap_if pcap_if_t;typedef struct pcap_addr pcap_addr_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_*) */};typedef enum {       PCAP_D_INOUT = 0,       PCAP_D_IN,       PCAP_D_OUT} pcap_direction_t;/* * Generic per-packet information, as supplied by libpcap. * * The time stamp can and should be a "struct timeval", regardless of * whether your system supports 32-bit tv_sec in "struct timeval", * 64-bit tv_sec in "struct timeval", or both if it supports both 32-bit * and 64-bit applications.  The on-disk format of savefiles uses 32-bit * tv_sec (and tv_usec); this structure is irrelevant to that.  32-bit * and 64-bit versions of libpcap, even if they're on the same platform, * should supply the appropriate version of "struct timeval", even if * that's not what the underlying packet capture mechanism supplies. */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 */#ifdef HAVE_REMOTE	u_int ps_capt;		/* number of packets that are received by the application; please get rid off the Win32 ifdef */	u_int ps_sent;		/* number of packets sent by the server on the network */	u_int ps_netdrop;	/* number of packets lost on the network */#endif /* HAVE_REMOTE */};#ifdef MSDOS/* * As returned by the pcap_stats_ex() */struct pcap_stat_ex {       u_long  rx_packets;        /* total packets received       */       u_long  tx_packets;        /* total packets transmitted    */       u_long  rx_bytes;          /* total bytes received         */       u_long  tx_bytes;          /* total bytes transmitted      */       u_long  rx_errors;         /* bad packets received         */       u_long  tx_errors;         /* packet transmit problems     */       u_long  rx_dropped;        /* no space in Rx buffers       */       u_long  tx_dropped;        /* no space available for Tx    */       u_long  multicast;         /* multicast packets received   */       u_long  collisions;       /* detailed rx_errors: */       u_long  rx_length_errors;       u_long  rx_over_errors;    /* receiver ring buff overflow  */       u_long  rx_crc_errors;     /* recv'd pkt with crc error    */       u_long  rx_frame_errors;   /* recv'd frame alignment error */       u_long  rx_fifo_errors;    /* recv'r fifo overrun          */       u_long  rx_missed_errors;  /* recv'r missed packet         */       /* detailed tx_errors */       u_long  tx_aborted_errors;       u_long  tx_carrier_errors;       u_long  tx_fifo_errors;       u_long  tx_heartbeat_errors;       u_long  tx_window_errors;     };#endif/* * Item in a list of interfaces. */struct pcap_if {	struct pcap_if *next;	char *name;		/* name to hand to "pcap_open_live()" */	char *description;	/* textual description of interface, or NULL */	struct pcap_addr *addresses;	bpf_u_int32 flags;	/* PCAP_IF_ interface flags */};#define PCAP_IF_LOOPBACK	0x00000001	/* interface is loopback *//* * Representation of an interface address. */struct pcap_addr {	struct pcap_addr *next;	struct sockaddr *addr;		/* address */	struct sockaddr *netmask;	/* netmask for that address */	struct sockaddr *broadaddr;	/* broadcast address for that address */	struct sockaddr *dstaddr;	/* P2P destination address for that address */};typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *,			     const u_char *);char	*pcap_lookupdev(char *);int	pcap_lookupnet(const char *, bpf_u_int32 *, bpf_u_int32 *, char *);pcap_t	*pcap_open_live(const char *, int, int, int, char *);pcap_t	*pcap_open_dead(int, int);pcap_t	*pcap_open_offline(const char *, char *);pcap_t	*pcap_fopen_offline(FILE *, 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_next_ex(pcap_t *, struct pcap_pkthdr **, const u_char **);void	pcap_breakloop(pcap_t *);int	pcap_stats(pcap_t *, struct pcap_stat *);int	pcap_setfilter(pcap_t *, struct bpf_program *);int 	pcap_setdirection(pcap_t *, pcap_direction_t);int	pcap_getnonblock(pcap_t *, char *);int	pcap_setnonblock(pcap_t *, int, char *);void	pcap_perror(pcap_t *, char *);int	pcap_inject(pcap_t *, const void *, size_t);int	pcap_sendpacket(pcap_t *, const u_char *, int);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_list_datalinks(pcap_t *, int **);int	pcap_set_datalink(pcap_t *, int);int	pcap_datalink_name_to_val(const char *);const char *pcap_datalink_val_to_name(int);const char *pcap_datalink_val_to_description(int);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 *);pcap_dumper_t *pcap_dump_fopen(pcap_t *, FILE *fp);FILE	*pcap_dump_file(pcap_dumper_t *);long	pcap_dump_ftell(pcap_dumper_t *);int	pcap_dump_flush(pcap_dumper_t *);void	pcap_dump_close(pcap_dumper_t *);void	pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *);int	pcap_findalldevs(pcap_if_t **, char *);void	pcap_freealldevs(pcap_if_t *);const char *pcap_lib_version(void);/* 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);#if defined(WIN32)/* * Win32 definitions */int pcap_setbuff(pcap_t *p, int dim);int pcap_setmode(pcap_t *p, int mode);int pcap_setmintocopy(pcap_t *p, int size);#ifdef WPCAP/* Include file with the wpcap-specific extensions */#include <Win32-Extensions.h>#endif /* WPCAP */#define MODE_CAPT 0#define MODE_STAT 1#define MODE_MON 2#elif defined(MSDOS)/* * MS-DOS definitions */int  pcap_stats_ex (pcap_t *, struct pcap_stat_ex *);void pcap_set_wait (pcap_t *p, void (*yield)(void), int wait);u_long pcap_mac_packets (void);#else /* UN*X *//* * UN*X definitions */int	pcap_get_selectable_fd(pcap_t *);#endif /* WIN32/MSDOS/UN*X */#ifdef HAVE_REMOTE/* Includes most of the public stuff that is needed for the remote capture */#include "remote-ext.h"#endif	 /* HAVE_REMOTE */#ifdef __cplusplus}#endif#endif