/* -*- 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 */
  
  #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 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 *);
  PCAP_API pcap_dumper_t *pcap_dump_fopen(pcap_t *, FILE *fp);
  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().
   *
   * For listing remote capture devices, pcap_findalldevs_ex() is currently
   * the only API available.
   */
  PCAP_API int	pcap_findalldevs_ex(char *source, struct pcap_rmtauth *auth,
  	    pcap_if_t **alldevs, char *errbuf);
  
  /*
   * Sampling methods.
   *
   * These allow pcap_loop(), pcap_dispatch(), pcap_next(), and pcap_next_ex()
   * to see only a sample of packets, rather than all packets.
   *
   * Currently, they work only on Windows local captures.
   */
  
  /*
   * Specifies that no sampling is to be done on the current capture.
   *
   * In this case, no sampling algorithms are applied to the current capture.
   */
  #define PCAP_SAMP_NOSAMP	0
  
  /*
   * Specifies that only 1 out of N packets must be returned to the user.
   *
   * In this case, the 'value' field of the 'pcap_samp' structure indicates the
   * number of packets (minus 1) that must be discarded before one packet got
   * accepted.
   * In other words, if 'value = 10', the first packet is returned to the
   * caller, while the following 9 are discarded.
   */
  #define PCAP_SAMP_1_EVERY_N	1
  
  /*
   * Specifies that we have to return 1 packet every N milliseconds.
   *
   * In this case, the 'value' field of the 'pcap_samp' structure indicates
   * the 'waiting time' in milliseconds before one packet got accepted.
   * In other words, if 'value = 10', the first packet is returned to the
   * caller; the next returned one will be the first packet that arrives
   * when 10ms have elapsed.
   */
  #define PCAP_SAMP_FIRST_AFTER_N_MS 2
  
  /*
   * This structure defines the information related to sampling.
   *
   * In case the sampling is requested, the capturing device should read
   * only a subset of the packets coming from the source. The returned packets
   * depend on the sampling parameters.
   *
   * WARNING: The sampling process is applied *after* the filtering process.
   * In other words, packets are filtered first, then the sampling process
   * selects a subset of the 'filtered' packets and it returns them to the
   * caller.
   */
  struct pcap_samp
  {
  	/*
  	 * Method used for sampling; see above.
  	 */
  	int method;
  
  	/*
  	 * This value depends on the sampling method defined.
  	 * For its meaning, see above.
  	 */
  	int value;
  };
  
  /*
   * New functions.
   */
  PCAP_API struct pcap_samp *pcap_setsampling(pcap_t *p);
  
  /*
   * RPCAP active mode.
   */
  
  /* Maximum length of an host name (needed for the RPCAP active mode) */
  #define RPCAP_HOSTLIST_SIZE 1024
  
  /*
   * Some minor differences between UN*X sockets and and Winsock sockets.
   */
  #ifndef _WIN32
    /*!
     * \brief In Winsock, a socket handle is of type SOCKET; in UN*X, it's
     * a file descriptor, and therefore a signed integer.
     * We define SOCKET to be a signed integer on UN*X, so that it can
     * be used on both platforms.
     */
    #define SOCKET int
  
    /*!
     * \brief In Winsock, the error return if socket() fails is INVALID_SOCKET;
     * in UN*X, it's -1.
     * We define INVALID_SOCKET to be -1 on UN*X, so that it can be used on
     * both platforms.
     */
    #define INVALID_SOCKET -1
  #endif
  
  PCAP_API SOCKET	pcap_remoteact_accept(const char *address, const char *port,
  	    const char *hostlist, char *connectinghost,
  	    struct pcap_rmtauth *auth, char *errbuf);
  PCAP_API int	pcap_remoteact_list(char *hostlist, char sep, int size,
  	    char *errbuf);
  PCAP_API int	pcap_remoteact_close(const char *host, char *errbuf);
  PCAP_API void	pcap_remoteact_cleanup(void);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* lib_pcap_pcap_h */