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/* -*- 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. 
 * 
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 * modification, are permitted provided that the following conditions 
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 * 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 1.45.2.4 2004/01/27 22:56:20 guy Exp $ (LBL) 
 */ 
 
#ifndef lib_pcap_h 
#define lib_pcap_h 
 
#ifdef WIN32 
#include  
#else /* WIN32 */ 
#include  
#include  
#endif /* WIN32 */ 
 
#ifndef PCAP_DONT_INCLUDE_PCAP_BPF_H 
#include  
#endif 
 
#include  
 
#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_*) */ 
}; 
 
/* 
 * 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 */ 
#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 */ 
}; 
 
/* 
 * 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 *); 
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_getnonblock(pcap_t *, char *); 
int	pcap_setnonblock(pcap_t *, int, char *); 
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_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 *); 
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 *); 
FILE	*pcap_dump_file(pcap_dumper_t *); 
 
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); 
 
#ifdef WIN32 
/* 
 * Win32 definitions 
 */ 
 
int pcap_setbuff(pcap_t *p, int dim); 
int pcap_setmode(pcap_t *p, int mode); 
int pcap_sendpacket(pcap_t *p, u_char *buf, int size); 
int pcap_setmintocopy(pcap_t *p, int size); 
 
#ifdef WPCAP 
/* Include file with the wpcap-specific extensions */ 
#include  
#endif 
 
#define MODE_CAPT 0 
#define MODE_STAT 1 
#define MODE_MON 2 
 
#else 
/* 
 * UN*X definitions 
 */ 
 
int	pcap_get_selectable_fd(pcap_t *); 
 
#endif /* WIN32 */ 
 
#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