/* -*- 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.

 */

/*

 * Remote packet capture mechanisms and extensions from WinPcap:

 *

 * Copyright (c) 2002 - 2003

 * NetGroup, Politecnico di Torino (Italy)

 * 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. Neither the name of the Politecnico di Torino nor the names of its

 * contributors may be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT

 * OWNER 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.

 *

 */

#ifndef lib_pcap_pcap_h

#define lib_pcap_pcap_h

#include <pcap/funcattrs.h>

#include <pcap/pcap-inttypes.h>

#if defined(_WIN32)

  #include <winsock2.h>		/* u_int, u_char etc. */

  #include <io.h>		/* _get_osfhandle() */

#elif defined(MSDOS)

  #include <sys/types.h>	/* u_int, u_char etc. */

  #include <sys/socket.h>

#else /* UN*X */

  #include <sys/types.h>	/* u_int, u_char etc. */

  #include <sys/time.h>

#endif /* _WIN32/MSDOS/UN*X */

#include <pcap/socket.h>	/* for SOCKET, as the active-mode rpcap APIs use it */

#ifndef PCAP_DONT_INCLUDE_PCAP_BPF_H

#include <pcap/bpf.h>

#endif

#include <stdio.h>

#ifdef __cplusplus

extern "C" {

#endif

/*

 * Version number of the current version of the pcap file format.

 *

 * NOTE: this is *NOT* the version number of the libpcap library.

 * To fetch the version information for the version of libpcap

 * you're using, use pcap_lib_version().

 */

#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@lists.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 by forking the branch at

 *

 *	https://github.com/the-tcpdump-group/libpcap/issues

 *

 * and issuing a pull request, 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_*) */

};

/*

 * Macros for the value returned by pcap_datalink_ext().

 *

 * If LT_FCS_LENGTH_PRESENT(x) is true, the LT_FCS_LENGTH(x) macro

 * gives the FCS length of packets in the capture.

 */

#define LT_FCS_LENGTH_PRESENT(x)	((x) & 0x04000000)

#define LT_FCS_LENGTH(x)		(((x) & 0xF0000000) >> 28)

#define LT_FCS_DATALINK_EXT(x)		((((x) & 0xF) << 28) | 0x04000000)

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 -- only supported on some platforms */

#ifdef _WIN32

	u_int ps_capt;		/* number of packets that reach the application */

	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 /* _WIN32 */

};

#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 */

#define PCAP_IF_UP					0x00000002	/* interface is up */

#define PCAP_IF_RUNNING					0x00000004	/* interface is running */

#define PCAP_IF_WIRELESS				0x00000008	/* interface is wireless (*NOT* necessarily Wi-Fi!) */

#define PCAP_IF_CONNECTION_STATUS			0x00000030	/* connection status: */

#define PCAP_IF_CONNECTION_STATUS_UNKNOWN		0x00000000	/* unknown */

#define PCAP_IF_CONNECTION_STATUS_CONNECTED		0x00000010	/* connected */

#define PCAP_IF_CONNECTION_STATUS_DISCONNECTED		0x00000020	/* disconnected */

#define PCAP_IF_CONNECTION_STATUS_NOT_APPLICABLE	0x00000030	/* not applicable */

/*

 * 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 *);

/*

 * Error codes for the pcap API.

 * These will all be negative, so you can check for the success or

 * failure of a call that returns these codes by checking for a

 * negative value.

 */

#define PCAP_ERROR			-1	/* generic error code */

#define PCAP_ERROR_BREAK		-2	/* loop terminated by pcap_breakloop */

#define PCAP_ERROR_NOT_ACTIVATED	-3	/* the capture needs to be activated */

#define PCAP_ERROR_ACTIVATED		-4	/* the operation can't be performed on already activated captures */

#define PCAP_ERROR_NO_SUCH_DEVICE	-5	/* no such device exists */

#define PCAP_ERROR_RFMON_NOTSUP		-6	/* this device doesn't support rfmon (monitor) mode */

#define PCAP_ERROR_NOT_RFMON		-7	/* operation supported only in monitor mode */

#define PCAP_ERROR_PERM_DENIED		-8	/* no permission to open the device */

#define PCAP_ERROR_IFACE_NOT_UP		-9	/* interface isn't up */

#define PCAP_ERROR_CANTSET_TSTAMP_TYPE	-10	/* this device doesn't support setting the time stamp type */

#define PCAP_ERROR_PROMISC_PERM_DENIED	-11	/* you don't have permission to capture in promiscuous mode */

#define PCAP_ERROR_TSTAMP_PRECISION_NOTSUP -12  /* the requested time stamp precision is not supported */

/*

 * Warning codes for the pcap API.

 * These will all be positive and non-zero, so they won't look like

 * errors.

 */

#define PCAP_WARNING			1	/* generic warning code */

#define PCAP_WARNING_PROMISC_NOTSUP	2	/* this device doesn't support promiscuous mode */

#define PCAP_WARNING_TSTAMP_TYPE_NOTSUP	3	/* the requested time stamp type is not supported */

/*

 * Value to pass to pcap_compile() as the netmask if you don't know what

 * the netmask is.

 */

#define PCAP_NETMASK_UNKNOWN	0xffffffff

/*

 * We're deprecating pcap_lookupdev() for various reasons (not

 * thread-safe, can behave weirdly with WinPcap).  Callers

 * should use pcap_findalldevs() and use the first device.

 */

PCAP_API char	*pcap_lookupdev(char *)

PCAP_DEPRECATED(pcap_lookupdev, "use 'pcap_findalldevs' and use the first device");

PCAP_API int	pcap_lookupnet(const char *, bpf_u_int32 *, bpf_u_int32 *, char *);

PCAP_API pcap_t	*pcap_create(const char *, char *);

PCAP_API int	pcap_set_snaplen(pcap_t *, int);

PCAP_API int	pcap_set_promisc(pcap_t *, int);

PCAP_API int	pcap_can_set_rfmon(pcap_t *);

PCAP_API int	pcap_set_rfmon(pcap_t *, int);

PCAP_API int	pcap_set_timeout(pcap_t *, int);

PCAP_API int	pcap_set_tstamp_type(pcap_t *, int);

PCAP_API int	pcap_set_immediate_mode(pcap_t *, int);

PCAP_API int	pcap_set_buffer_size(pcap_t *, int);

PCAP_API int	pcap_set_tstamp_precision(pcap_t *, int);

PCAP_API int	pcap_get_tstamp_precision(pcap_t *);

PCAP_API int	pcap_activate(pcap_t *);

PCAP_API int	pcap_list_tstamp_types(pcap_t *, int **);

PCAP_API void	pcap_free_tstamp_types(int *);

PCAP_API int	pcap_tstamp_type_name_to_val(const char *);

PCAP_API const char *pcap_tstamp_type_val_to_name(int);

PCAP_API const char *pcap_tstamp_type_val_to_description(int);

#ifdef __linux__

PCAP_API int	pcap_set_protocol_linux(pcap_t *, int);

#endif

/*

 * Time stamp types.

 * Not all systems and interfaces will necessarily support all of these.

 *

 * A system that supports PCAP_TSTAMP_HOST is offering time stamps

 * provided by the host machine, rather than by the capture device,

 * but not committing to any characteristics of the time stamp;

 * it will not offer any of the PCAP_TSTAMP_HOST_ subtypes.

 *

 * PCAP_TSTAMP_HOST_LOWPREC is a time stamp, provided by the host machine,

 * that's low-precision but relatively cheap to fetch; it's normally done

 * using the system clock, so it's normally synchronized with times you'd

 * fetch from system calls.

 *

 * PCAP_TSTAMP_HOST_HIPREC is a time stamp, provided by the host machine,

 * that's high-precision; it might be more expensive to fetch.  It might

 * or might not be synchronized with the system clock, and might have

 * problems with time stamps for packets received on different CPUs,

 * depending on the platform.

 *

 * PCAP_TSTAMP_ADAPTER is a high-precision time stamp supplied by the

 * capture device; it's synchronized with the system clock.

 *

 * PCAP_TSTAMP_ADAPTER_UNSYNCED is a high-precision time stamp supplied by

 * the capture device; it's not synchronized with the system clock.

 *

 * Note that time stamps synchronized with the system clock can go

 * backwards, as the system clock can go backwards.  If a clock is

 * not in sync with the system clock, that could be because the

 * system clock isn't keeping accurate time, because the other

 * clock isn't keeping accurate time, or both.

 *

 * Note that host-provided time stamps generally correspond to the

 * time when the time-stamping code sees the packet; this could

 * be some unknown amount of time after the first or last bit of

 * the packet is received by the network adapter, due to batching

 * of interrupts for packet arrival, queueing delays, etc..

 */

#define PCAP_TSTAMP_HOST		0	/* host-provided, unknown characteristics */

#define PCAP_TSTAMP_HOST_LOWPREC	1	/* host-provided, low precision */

#define PCAP_TSTAMP_HOST_HIPREC		2	/* host-provided, high precision */

#define PCAP_TSTAMP_ADAPTER		3	/* device-provided, synced with the system clock */

#define PCAP_TSTAMP_ADAPTER_UNSYNCED	4	/* device-provided, not synced with the system clock */

/*

 * Time stamp resolution types.

 * Not all systems and interfaces will necessarily support all of these

 * resolutions when doing live captures; all of them can be requested

 * when reading a savefile.

 */

#define PCAP_TSTAMP_PRECISION_MICRO	0	/* use timestamps with microsecond precision, default */

#define PCAP_TSTAMP_PRECISION_NANO	1	/* use timestamps with nanosecond precision */

PCAP_API pcap_t	*pcap_open_live(const char *, int, int, int, char *);

PCAP_API pcap_t	*pcap_open_dead(int, int);

PCAP_API pcap_t	*pcap_open_dead_with_tstamp_precision(int, int, u_int);

PCAP_API pcap_t	*pcap_open_offline_with_tstamp_precision(const char *, u_int, char *);

PCAP_API pcap_t	*pcap_open_offline(const char *, char *);

#ifdef _WIN32

  PCAP_API pcap_t  *pcap_hopen_offline_with_tstamp_precision(intptr_t, u_int, char *);

  PCAP_API pcap_t  *pcap_hopen_offline(intptr_t, char *);

  /*

   * If we're building libpcap, these are internal routines in savefile.c,

   * so we must not define them as macros.

   *

   * If we're not building libpcap, given that the version of the C runtime

   * with which libpcap was built might be different from the version

   * of the C runtime with which an application using libpcap was built,

   * and that a FILE structure may differ between the two versions of the

   * C runtime, calls to _fileno() must use the version of _fileno() in

   * the C runtime used to open the FILE *, not the version in the C

   * runtime with which libpcap was built.  (Maybe once the Universal CRT

   * rules the world, this will cease to be a problem.)

   */

  #ifndef BUILDING_PCAP

    #define pcap_fopen_offline_with_tstamp_precision(f,p,b) \

	pcap_hopen_offline_with_tstamp_precision(_get_osfhandle(_fileno(f)), p, b)

    #define pcap_fopen_offline(f,b) \

	pcap_hopen_offline(_get_osfhandle(_fileno(f)), b)

  #endif

#else /*_WIN32*/

  PCAP_API pcap_t	*pcap_fopen_offline_with_tstamp_precision(FILE *, u_int, char *);

  PCAP_API pcap_t	*pcap_fopen_offline(FILE *, char *);

#endif /*_WIN32*/

PCAP_API void	pcap_close(pcap_t *);

PCAP_API int	pcap_loop(pcap_t *, int, pcap_handler, u_char *);

PCAP_API int	pcap_dispatch(pcap_t *, int, pcap_handler, u_char *);

PCAP_API const u_char *pcap_next(pcap_t *, struct pcap_pkthdr *);

PCAP_API int 	pcap_next_ex(pcap_t *, struct pcap_pkthdr **, const u_char **);

PCAP_API void	pcap_breakloop(pcap_t *);

PCAP_API int	pcap_stats(pcap_t *, struct pcap_stat *);

PCAP_API int	pcap_setfilter(pcap_t *, struct bpf_program *);

PCAP_API int 	pcap_setdirection(pcap_t *, pcap_direction_t);

PCAP_API int	pcap_getnonblock(pcap_t *, char *);

PCAP_API int	pcap_setnonblock(pcap_t *, int, char *);

PCAP_API int	pcap_inject(pcap_t *, const void *, size_t);

PCAP_API int	pcap_sendpacket(pcap_t *, const u_char *, int);

PCAP_API const char *pcap_statustostr(int);

PCAP_API const char *pcap_strerror(int);

PCAP_API char	*pcap_geterr(pcap_t *);

PCAP_API void	pcap_perror(pcap_t *, const char *);

PCAP_API int	pcap_compile(pcap_t *, struct bpf_program *, const char *, int,

	    bpf_u_int32);

PCAP_API int	pcap_compile_nopcap(int, int, struct bpf_program *,

	    const char *, int, bpf_u_int32);

PCAP_API void	pcap_freecode(struct bpf_program *);

PCAP_API int	pcap_offline_filter(const struct bpf_program *,

	    const struct pcap_pkthdr *, const u_char *);

PCAP_API int	pcap_datalink(pcap_t *);

PCAP_API int	pcap_datalink_ext(pcap_t *);

PCAP_API int	pcap_list_datalinks(pcap_t *, int **);

PCAP_API int	pcap_set_datalink(pcap_t *, int);

PCAP_API void	pcap_free_datalinks(int *);

PCAP_API int	pcap_datalink_name_to_val(const char *);

PCAP_API const char *pcap_datalink_val_to_name(int);

PCAP_API const char *pcap_datalink_val_to_description(int);

PCAP_API const char *pcap_datalink_val_to_description_or_dlt(int);

PCAP_API int	pcap_snapshot(pcap_t *);

PCAP_API int	pcap_is_swapped(pcap_t *);

PCAP_API int	pcap_major_version(pcap_t *);

PCAP_API int	pcap_minor_version(pcap_t *);

PCAP_API int	pcap_bufsize(pcap_t *);

/* XXX */

PCAP_API FILE	*pcap_file(pcap_t *);

PCAP_API int	pcap_fileno(pcap_t *);

#ifdef _WIN32

  PCAP_API int	pcap_wsockinit(void);

#endif

PCAP_API pcap_dumper_t *pcap_dump_open(pcap_t *, const char *);

#ifdef _WIN32

  PCAP_API pcap_dumper_t *pcap_dump_hopen(pcap_t *, intptr_t);

  /*

   * If we're building libpcap, this is an internal routine in sf-pcap.c, so

   * we must not define it as a macro.

   *

   * If we're not building libpcap, given that the version of the C runtime

   * with which libpcap was built might be different from the version

   * of the C runtime with which an application using libpcap was built,

   * and that a FILE structure may differ between the two versions of the

   * C runtime, calls to _fileno() must use the version of _fileno() in

   * the C runtime used to open the FILE *, not the version in the C

   * runtime with which libpcap was built.  (Maybe once the Universal CRT

   * rules the world, this will cease to be a problem.)

   */

  #ifndef BUILDING_PCAP

    #define pcap_dump_fopen(p,f) \

	pcap_dump_hopen(p, _get_osfhandle(_fileno(f)))

  #endif

#else /*_WIN32*/

  PCAP_API pcap_dumper_t *pcap_dump_fopen(pcap_t *, FILE *fp);

#endif /*_WIN32*/

PCAP_API pcap_dumper_t *pcap_dump_open_append(pcap_t *, const char *);

PCAP_API FILE	*pcap_dump_file(pcap_dumper_t *);

PCAP_API long	pcap_dump_ftell(pcap_dumper_t *);

PCAP_API int64_t	pcap_dump_ftell64(pcap_dumper_t *);

PCAP_API int	pcap_dump_flush(pcap_dumper_t *);

PCAP_API void	pcap_dump_close(pcap_dumper_t *);

PCAP_API void	pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *);

PCAP_API int	pcap_findalldevs(pcap_if_t **, char *);

PCAP_API void	pcap_freealldevs(pcap_if_t *);

/*

 * We return a pointer to the version string, rather than exporting the

 * version string directly.

 *

 * On at least some UNIXes, if you import data from a shared library into

 * an program, the data is bound into the program binary, so if the string

 * in the version of the library with which the program was linked isn't

 * the same as the string in the version of the library with which the

 * program is being run, various undesirable things may happen (warnings,

 * the string being the one from the version of the library with which the

 * program was linked, or even weirder things, such as the string being the

 * one from the library but being truncated).

 *

 * On Windows, the string is constructed at run time.

 */

PCAP_API const char *pcap_lib_version(void);

/*

 * On at least some versions of NetBSD and QNX, we don't want to declare

 * bpf_filter() here, as it's also be declared in <net/bpf.h>, with a

 * different signature, but, on other BSD-flavored UN*Xes, it's not

 * declared in <net/bpf.h>, so we *do* want to declare it here, so it's

 * declared when we build pcap-bpf.c.

 */

#if !defined(__NetBSD__) && !defined(__QNX__)

  PCAP_API u_int	bpf_filter(const struct bpf_insn *, const u_char *, u_int, u_int);

#endif

PCAP_API int	bpf_validate(const struct bpf_insn *f, int len);

PCAP_API char	*bpf_image(const struct bpf_insn *, int);

PCAP_API void	bpf_dump(const struct bpf_program *, int);

#if defined(_WIN32)

  /*

   * Win32 definitions

   */

  /*!

    \brief A queue of raw packets that will be sent to the network with pcap_sendqueue_transmit().

  */

  struct pcap_send_queue

  {

	u_int maxlen;	/* Maximum size of the queue, in bytes. This

			   variable contains the size of the buffer field. */

	u_int len;	/* Current size of the queue, in bytes. */

	char *buffer;	/* Buffer containing the packets to be sent. */

  };

  typedef struct pcap_send_queue pcap_send_queue;

  /*!

    \brief This typedef is a support for the pcap_get_airpcap_handle() function

  */

  #if !defined(AIRPCAP_HANDLE__EAE405F5_0171_9592_B3C2_C19EC426AD34__DEFINED_)

    #define AIRPCAP_HANDLE__EAE405F5_0171_9592_B3C2_C19EC426AD34__DEFINED_

    typedef struct _AirpcapHandle *PAirpcapHandle;

  #endif

  PCAP_API int pcap_setbuff(pcap_t *p, int dim);

  PCAP_API int pcap_setmode(pcap_t *p, int mode);

  PCAP_API int pcap_setmintocopy(pcap_t *p, int size);

  PCAP_API HANDLE pcap_getevent(pcap_t *p);

  PCAP_API int pcap_oid_get_request(pcap_t *, bpf_u_int32, void *, size_t *);

  PCAP_API int pcap_oid_set_request(pcap_t *, bpf_u_int32, const void *, size_t *);

  PCAP_API pcap_send_queue* pcap_sendqueue_alloc(u_int memsize);

  PCAP_API void pcap_sendqueue_destroy(pcap_send_queue* queue);

  PCAP_API int pcap_sendqueue_queue(pcap_send_queue* queue, const struct pcap_pkthdr *pkt_header, const u_char *pkt_data);

  PCAP_API u_int pcap_sendqueue_transmit(pcap_t *p, pcap_send_queue* queue, int sync);

  PCAP_API struct pcap_stat *pcap_stats_ex(pcap_t *p, int *pcap_stat_size);

  PCAP_API int pcap_setuserbuffer(pcap_t *p, int size);

  PCAP_API int pcap_live_dump(pcap_t *p, char *filename, int maxsize, int maxpacks);

  PCAP_API int pcap_live_dump_ended(pcap_t *p, int sync);

  PCAP_API int pcap_start_oem(char* err_str, int flags);

  PCAP_API PAirpcapHandle pcap_get_airpcap_handle(pcap_t *p);

  #define MODE_CAPT 0

  #define MODE_STAT 1

  #define MODE_MON 2

#elif defined(MSDOS)

  /*

   * MS-DOS definitions

   */

  PCAP_API int  pcap_stats_ex (pcap_t *, struct pcap_stat_ex *);

  PCAP_API void pcap_set_wait (pcap_t *p, void (*yield)(void), int wait);

  PCAP_API u_long pcap_mac_packets (void);

#else /* UN*X */

  /*

   * UN*X definitions

   */

  PCAP_API int	pcap_get_selectable_fd(pcap_t *);

  PCAP_API struct timeval *pcap_get_required_select_timeout(pcap_t *);

#endif /* _WIN32/MSDOS/UN*X */

/*

 * Remote capture definitions.

 *

 * These routines are only present if libpcap has been configured to

 * include remote capture support.

 */

/*

 * The maximum buffer size in which address, port, interface names are kept.

 *

 * In case the adapter name or such is larger than this value, it is truncated.

 * This is not used by the user; however it must be aware that an hostname / interface

 * name longer than this value will be truncated.

 */

#define PCAP_BUF_SIZE 1024

/*

 * The type of input source, passed to pcap_open().

 */

#define PCAP_SRC_FILE		2	/* local savefile */

#define PCAP_SRC_IFLOCAL	3	/* local network interface */

#define PCAP_SRC_IFREMOTE	4	/* interface on a remote host, using RPCAP */

/*

 * The formats allowed by pcap_open() are the following:

 * - file://path_and_filename [opens a local file]

 * - rpcap://devicename [opens the selected device devices available on the local host, without using the RPCAP protocol]

 * - rpcap://host/devicename [opens the selected device available on a remote host]

 * - rpcap://host:port/devicename [opens the selected device available on a remote host, using a non-standard port for RPCAP]

 * - adaptername [to open a local adapter; kept for compability, but it is strongly discouraged]

 * - (NULL) [to open the first local adapter; kept for compability, but it is strongly discouraged]

 *

 * The formats allowed by the pcap_findalldevs_ex() are the following:

 * - file://folder/ [lists all the files in the given folder]

 * - rpcap:// [lists all local adapters]

 * - rpcap://host:port/ [lists the devices available on a remote host]

 *

 * Referring to the 'host' and 'port' parameters, they can be either numeric or literal. Since

 * IPv6 is fully supported, these are the allowed formats:

 *

 * - host (literal): e.g. host.foo.bar

 * - host (numeric IPv4): e.g. 10.11.12.13

 * - host (numeric IPv4, IPv6 style): e.g. [10.11.12.13]

 * - host (numeric IPv6): e.g. [1:2:3::4]

 * - port: can be either numeric (e.g. '80') or literal (e.g. 'http')

 *

 * Here you find some allowed examples:

 * - rpcap://host.foo.bar/devicename [everything literal, no port number]

 * - rpcap://host.foo.bar:1234/devicename [everything literal, with port number]

 * - rpcap://10.11.12.13/devicename [IPv4 numeric, no port number]

 * - rpcap://10.11.12.13:1234/devicename [IPv4 numeric, with port number]

 * - rpcap://[10.11.12.13]:1234/devicename [IPv4 numeric with IPv6 format, with port number]

 * - rpcap://[1:2:3::4]/devicename [IPv6 numeric, no port number]

 * - rpcap://[1:2:3::4]:1234/devicename [IPv6 numeric, with port number]

 * - rpcap://[1:2:3::4]:http/devicename [IPv6 numeric, with literal port number]

 */

/*

 * URL schemes for capture source.

 */

/*

 * This string indicates that the user wants to open a capture from a

 * local file.

 */

#define PCAP_SRC_FILE_STRING "file://"

/*

 * This string indicates that the user wants to open a capture from a

 * network interface.  This string does not necessarily involve the use

 * of the RPCAP protocol. If the interface required resides on the local

 * host, the RPCAP protocol is not involved and the local functions are used.

 */

#define PCAP_SRC_IF_STRING "rpcap://"

/*

 * Flags to pass to pcap_open().

 */

/*

 * Specifies whether promiscuous mode is to be used.

 */

#define PCAP_OPENFLAG_PROMISCUOUS		0x00000001

/*

 * Specifies, for an RPCAP capture, whether the data transfer (in

 * case of a remote capture) has to be done with UDP protocol.

 *

 * If it is '1' if you want a UDP data connection, '0' if you want

 * a TCP data connection; control connection is always TCP-based.

 * A UDP connection is much lighter, but it does not guarantee that all

 * the captured packets arrive to the client workstation. Moreover,

 * it could be harmful in case of network congestion.

 * This flag is meaningless if the source is not a remote interface.

 * In that case, it is simply ignored.

 */

#define PCAP_OPENFLAG_DATATX_UDP		0x00000002

/*

 * Specifies wheether the remote probe will capture its own generated

 * traffic.

 *

 * In case the remote probe uses the same interface to capture traffic

 * and to send data back to the caller, the captured traffic includes

 * the RPCAP traffic as well.  If this flag is turned on, the RPCAP

 * traffic is excluded from the capture, so that the trace returned

 * back to the collector is does not include this traffic.

 *

 * Has no effect on local interfaces or savefiles.

 */

#define PCAP_OPENFLAG_NOCAPTURE_RPCAP		0x00000004

/*

 * Specifies whether the local adapter will capture its own generated traffic.

 *

 * This flag tells the underlying capture driver to drop the packets

 * that were sent by itself.  This is useful when building applications

 * such as bridges that should ignore the traffic they just sent.

 *

 * Supported only on Windows.

 */

#define PCAP_OPENFLAG_NOCAPTURE_LOCAL		0x00000008

/*

 * This flag configures the adapter for maximum responsiveness.

 *

 * In presence of a large value for nbytes, WinPcap waits for the arrival

 * of several packets before copying the data to the user. This guarantees

 * a low number of system calls, i.e. lower processor usage, i.e. better

 * performance, which is good for applications like sniffers. If the user

 * sets the PCAP_OPENFLAG_MAX_RESPONSIVENESS flag, the capture driver will

 * copy the packets as soon as the application is ready to receive them.

 * This is suggested for real time applications (such as, for example,

 * a bridge) that need the best responsiveness.

 *

 * The equivalent with pcap_create()/pcap_activate() is "immediate mode".

 */

#define PCAP_OPENFLAG_MAX_RESPONSIVENESS	0x00000010

/*

 * Remote authentication methods.

 * These are used in the 'type' member of the pcap_rmtauth structure.

 */

/*

 * NULL authentication.

 *

 * The 'NULL' authentication has to be equal to 'zero', so that old

 * applications can just put every field of struct pcap_rmtauth to zero,

 * and it does work.

 */

#define RPCAP_RMTAUTH_NULL 0

/*

 * Username/password authentication.

 *

 * With this type of authentication, the RPCAP protocol will use the username/

 * password provided to authenticate the user on the remote machine. If the

 * authentication is successful (and the user has the right to open network

 * devices) the RPCAP connection will continue; otherwise it will be dropped.

 *

 * *******NOTE********: the username and password are sent over the network

 * to the capture server *IN CLEAR TEXT*.  Don't use this on a network

 * that you don't completely control!  (And be *really* careful in your

 * definition of "completely"!)

 */

#define RPCAP_RMTAUTH_PWD 1

/*

 * This structure keeps the information needed to autheticate the user

 * on a remote machine.

 *

 * The remote machine can either grant or refuse the access according

 * to the information provided.

 * In case the NULL authentication is required, both 'username' and

 * 'password' can be NULL pointers.

 *

 * This structure is meaningless if the source is not a remote interface;

 * in that case, the functions which requires such a structure can accept

 * a NULL pointer as well.

 */

struct pcap_rmtauth

{

	/*

	 * \brief Type of the authentication required.

	 *

	 * In order to provide maximum flexibility, we can support different types

	 * of authentication based on the value of this 'type' variable. The currently

	 * supported authentication methods are defined into the

	 * \link remote_auth_methods Remote Authentication Methods Section\endlink.

	 */

	int type;

	/*

	 * \brief Zero-terminated string containing the username that has to be

	 * used on the remote machine for authentication.

	 *

	 * This field is meaningless in case of the RPCAP_RMTAUTH_NULL authentication

	 * and it can be NULL.

	 */

	char *username;

	/*

	 * \brief Zero-terminated string containing the password that has to be

	 * used on the remote machine for authentication.

	 *

	 * This field is meaningless in case of the RPCAP_RMTAUTH_NULL authentication

	 * and it can be NULL.

	 */

	char *password;

};

/*

 * This routine can open a savefile, a local device, or a device on

 * a remote machine running an RPCAP server.

 *

 * For opening a savefile, the pcap_open_offline routines can be used,

 * and will work just as well; code using them will work on more

 * platforms than code using pcap_open() to open savefiles.

 *

 * For opening a local device, pcap_open_live() can be used; it supports

 * most of the capabilities that pcap_open() supports, and code using it

 * will work on more platforms than code using pcap_open().  pcap_create()

 * and pcap_activate() can also be used; they support all capabilities

 * that pcap_open() supports, except for the Windows-only

 * PCAP_OPENFLAG_NOCAPTURE_LOCAL, and support additional capabilities.

 *

 * For opening a remote capture, pcap_open() is currently the only

 * API available.

 */

PCAP_API pcap_t	*pcap_open(const char *source, int snaplen, int flags,

	    int read_timeout, struct pcap_rmtauth *auth, char *errbuf);

PCAP_API int	pcap_createsrcstr(char *source, int type, const char *host,

	    const char *port, const char *name, char *errbuf);

PCAP_API int	pcap_parsesrcstr(const char *source, int *type, char *host,

	    char *port, char *name, char *errbuf);

/*

 * This routine can scan a directory for savefiles, list local capture

 * devices, or list capture devices on a remote machine running an RPCAP

 * server.

 *

 * For scanning for savefiles, it can be used on both UN*X systems and

 * Windows systems; for each directory entry it sees, it tries to open

 * the file as a savefile using pcap_open_offline(), and only includes

 * it in the list of files if the open succeeds, so it filters out

 * files for which the user doesn't have read permission, as well as

 * files that aren't valid savefiles readable by libpcap.

 *

 * For listing local capture devices, it's just a wrapper around

 * pcap_findalldevs(); code using pcap_findalldevs() will work on more

 * platforms than code using pcap_findalldevs_ex().