/* -*- 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 __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;

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