/*
 * Copyright (c) 1994, 1995, 1996
 *	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: /home/cvs/plc-utils/VisualStudioNET/include/pcap-int.h,v 1.1.1.1 2011-08-27 15:30:16 cmaier Exp $ (LBL)
 */

#ifndef pcap_int_h
#define pcap_int_h

#ifdef __cplusplus

extern "C" 

{

#endif

#include <pcap.h>

#ifdef WIN32
#include <Packet32.h>
#endif /* WIN32 */

#ifdef MSDOS
#include <fcntl.h>
#include <io.h>
#endif

/*
 * Savefile
 */

	typedef enum 
	{
		NOT_SWAPPED,
		SWAPPED,
		MAYBE_SWAPPED 
	}
	swapped_type_t;
	struct pcap_sf 
	{
		FILE *rfile;
		int swapped;
		int hdrsize;
		swapped_type_t lengths_swapped;
		int version_major;
		int version_minor;
		u_char *base;
	};
	struct pcap_md 
	{
		struct pcap_stat stat;

/*XXX*/

		int use_bpf;

/* using kernel filter */

		u_long TotPkts;

/* can't oflow for 79 hrs on ether */

		u_long TotAccepted;

/* count accepted by filter */

		u_long TotDrops;

/* count of dropped packets */

		long TotMissed;

/* missed by i/f during this run */

		long OrigMissed;

/* missed by i/f before this run */

		char *device;

/* device name */

#ifdef linux

		int sock_packet;

/* using Linux 2.0 compatible interface */

		int timeout;

/* timeout specified to pcap_open_live */

		int clear_promisc;

/* must clear promiscuous mode when we close */

		int cooked;

/* using SOCK_DGRAM rather than SOCK_RAW */

		int ifindex;

/* interface index of device we're bound to */

		int lo_ifindex;

/* interface index of the loopback device */

		struct pcap *next;

/* list of open promiscuous sock_packet pcaps */

		u_int packets_read;

/* count of packets read with recvfrom() */

#endif

#ifdef HAVE_DAG_API
#ifdef HAVE_DAG_STREAMS_API

		u_char *dag_mem_bottom;

/* DAG card current memory bottom pointer */

		u_char *dag_mem_top;

/* DAG card current memory top pointer */

#else

		void *dag_mem_base;

/* DAG card memory base address */

		u_int dag_mem_bottom;

/* DAG card current memory bottom offset */

		u_int dag_mem_top;

/* DAG card current memory top offset */

#endif /* HAVE_DAG_STREAMS_API */

		int dag_fcs_bits;

/* Number of checksum bits from link layer */

		int dag_offset_flags;

/* Flags to pass to dag_offset(). */

		int dag_stream;

/* DAG stream number */

		int dag_timeout;

/* timeout specified to pcap_open_live.
 * Same as in linux above, introduce
 * generally? */

#endif /* HAVE_DAG_API */

#ifdef HAVE_REMOTE

/*!
 *   There is really a mess with previous variables, and it seems to me that they are not used
 *   (they are used in pcap_pf.c only). I think we have to start using them.
 *   The meaning is the following:
 *   
 *   - TotPkts: the amount of packets received by the bpf filter, *before* applying the filter
 *   - TotAccepted: the amount of packets that satisfies the filter
 *   - TotDrops: the amount of packet that were dropped into the kernel buffer because of lack of space
 *   - TotMissed: the amount of packets that were dropped by the physical interface; it is basically 
 *   the value of the hardware counter into the card. This number is never put to zero, so this number
 *   takes into account the *total* number of interface drops starting from the interface power-on.
 *   - OrigMissed: the amount of packets that were dropped by the interface *when the capture begins*.
 *   This value is used to detect the number of packets dropped by the interface *during the present
 *   capture*, so that (ps_ifdrops= TotMissed - OrigMissed).
 */

		unsigned int TotNetDrops;

//!< keeps the number of packets that have been dropped by the network
/*!
 *   \brief It keeps the number of packets that have been received by the application.
 *   
 *   Packets dropped by the kernel buffer are not counted in this variable. The variable is always 
 *   equal to (TotAccepted - TotDrops), exept for the case of remote capture, in which we have also
 *   packets in fligh, i.e. that have been transmitted by the remote host, but that have not been 
 *   received (yet) from the client. In this case, (TotAccepted - TotDrops - TotNetDrops) gives a
 *   wrong result, since this number does not corresponds always to the number of packet received by 
 *   the application. For this reason, in the remote capture we need another variable that takes
 *   into account of the number of packets actually received by the application.
 */

		unsigned int TotCapt;

#endif /* HAVE_REMOTE */

	};

/*
 * Ultrix, DEC OSF/1^H^H^H^H^H^H^H^H^HDigital UNIX^H^H^H^H^H^H^H^H^H^H^H^H
 * Tru64 UNIX, and NetBSD pad to make everything line up on a nice boundary.
 */

#if defined(ultrix) || defined(__osf__) || (defined(__NetBSD__) && __NetBSD_Version__ > 106000000)
#define       PCAP_FDDIPAD 3
#endif

	struct pcap 
	{

#ifdef WIN32

		ADAPTER *adapter;
		LPPACKET Packet;
		int timeout;
		int nonblock;

#else

		int fd;
		int selectable_fd;
		int send_fd;

#endif /* WIN32 */

		int snapshot;
		int linktype;
		int tzoff;

/* timezone offset */

		int offset;

/* offset for proper alignment */

		int break_loop;

/* flag set to force break from packet-reading loop */

#ifdef PCAP_FDDIPAD

		int fddipad;

#endif

#ifdef MSDOS

		int inter_packet_wait;

/* offline: wait between packets */

		void (*wait_proc)(void);

/*          call proc while waiting */

#endif

		struct pcap_sf sf;
		struct pcap_md md;

/*
 * Read buffer.
 */

		int bufsize;
		u_char *buffer;
		u_char *bp;
		int cc;

/*
 * Place holder for pcap_next().
 */

		u_char *pkt;

/* We're accepting only packets in this direction/these directions. */

		pcap_direction_t direction;

/*
 * Methods.
 */

		int (*read_op)(pcap_t *, int cnt, pcap_handler, u_char *);
		int (*inject_op)(pcap_t *, const void *, size_t);
		int (*setfilter_op)(pcap_t *, struct bpf_program *);
		int (*setdirection_op)(pcap_t *, pcap_direction_t);
		int (*set_datalink_op)(pcap_t *, int);
		int (*getnonblock_op)(pcap_t *, char *);
		int (*setnonblock_op)(pcap_t *, int, char *);
		int (*stats_op)(pcap_t *, struct pcap_stat *);
		void (*close_op)(pcap_t *);

/*
 * Placeholder for filter code if bpf not in kernel.
 */

		struct bpf_program fcode;
		char errbuf [PCAP_ERRBUF_SIZE + 1];
		int dlt_count;
		u_int *dlt_list;
		struct pcap_pkthdr pcap_header;

/* This is needed for the pcap_next_ex() to work */

#ifdef HAVE_REMOTE
#ifndef WIN32	// Win32 already defines 'timeout'

		int timeout;

//!< timeout to be used in the pcap_open()

#endif

/*! \brief '1' if we're the network client; needed by several functions (like pcap_setfilter() ) to know if 
 *   they have to use the socket or they have to open the local adapter. */

		int rmt_clientside;
		SOCKET rmt_sockctrl;

//!< socket ID of the socket used for the control connection

		SOCKET rmt_sockdata;

//!< socket ID of the socket used for the data connection

		int rmt_flags;

//!< we have to save flags, since they are passed by the pcap_open_live(), but they are used by the pcap_startcapture()

		int rmt_capstarted;

//!< 'true' if the capture is already started (needed to knoe if we have to call the pcap_startcapture()

		struct pcap_samp rmt_samp;

//!< Keeps the parameters related to the sampling process.

		char *currentfilter;

//!< Pointer to a buffer (allocated at run-time) that stores the current filter. Needed when flag PCAP_OPENFLAG_NOCAPTURE_RPCAP is turned on.

#endif /* HAVE_REMOTE */

	};

/*
 * This is a timeval as stored in a savefile.
 * It has to use the same types everywhere, independent of the actual
 * `struct timeval'; `struct timeval' has 32-bit tv_sec values on some
 * platforms and 64-bit tv_sec values on other platforms, and writing
 * out native `struct timeval' values would mean files could only be
 * read on systems with the same tv_sec size as the system on which
 * the file was written.
 */

	struct pcap_timeval 
	{
		bpf_int32 tv_sec;

/* seconds */

		bpf_int32 tv_usec;

/* microseconds */

	};

/*
 * This is a `pcap_pkthdr' as actually stored in a savefile.
 *
 * Do not change the format of this structure, in any way (this includes
 * changes that only affect the length of fields in this structure),
 * and do not make the time stamp anything other than seconds and
 * microseconds (e.g., seconds and nanoseconds).  Instead:
 *
 *	introduce a new structure for the new format;
 *
 *	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 record
 *	header;
 *
 *	make the code in "savefile.c" capable of reading files with
 *	the old record header as well as files with the new record 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_sf_pkthdr 
	{
		struct pcap_timeval ts;

/* time stamp */

		bpf_u_int32 caplen;

/* length of portion present */

		bpf_u_int32 len;

/* length this packet (off wire) */

	};

/*
 * How a `pcap_pkthdr' is actually stored in savefiles written
 * by some patched versions of libpcap (e.g. the ones in Red
 * Hat Linux 6.1 and 6.2).
 *
 * Do not change the format of this structure, in any way (this includes
 * changes that only affect the length of fields in this structure).
 * Instead, introduce a new structure, as per the above.
 */

	struct pcap_sf_patched_pkthdr 
	{
		struct pcap_timeval ts;

/* time stamp */

		bpf_u_int32 caplen;

/* length of portion present */

		bpf_u_int32 len;

/* length this packet (off wire) */

		int index;
		unsigned short protocol;
		unsigned char pkt_type;
	};
	int yylex (void);

#ifndef min
#define min(a, b) ((a) > (b) ? (b) : (a))
#endif

/* XXX should these be in pcap.h? */

	int pcap_offline_read (pcap_t *, int, pcap_handler, u_char *);
	int pcap_read (pcap_t *, int cnt, pcap_handler, u_char *);

#ifndef HAVE_STRLCPY
#define strlcpy(x, y, z) \
	(strncpy ((x), (y), (z)), \ ((z) <= 0? 0: ((x)[(z) - 1] = '\0')), \ strlen ((y))) 

#endif

#include <stdarg.h>

#if !defined(HAVE_SNPRINTF)
#define snprintf pcap_snprintf

	extern int snprintf (char *, size_t, const char *, ...);

#endif

#if !defined(HAVE_VSNPRINTF)
#define vsnprintf pcap_vsnprintf

	extern int vsnprintf (char *, size_t, const char *, va_list ap);

#endif

/*
 * Routines that most pcap implementations can use for non-blocking mode.
 */

#if !defined(WIN32) && !defined(MSDOS)

	int pcap_getnonblock_fd (pcap_t *, char *);
	int pcap_setnonblock_fd (pcap_t *p, int, char *);

#endif

	void pcap_close_common (pcap_t *);

/*
 * Internal interfaces for "pcap_findalldevs()".
 *
 * "pcap_platform_finddevs()" is a platform-dependent routine to
 * add devices not found by the "standard" mechanisms (SIOCGIFCONF,
 * "getifaddrs()", etc..
 *
 * "pcap_add_if()" adds an interface to the list of interfaces.
 */

	int pcap_platform_finddevs (pcap_if_t **, char *);
	int add_addr_to_iflist (pcap_if_t **, const char *, u_int, struct sockaddr *, size_t, struct sockaddr *, size_t, struct sockaddr *, size_t, struct sockaddr *, size_t, char *);
	int pcap_add_if (pcap_if_t **, const char *, u_int, const char *, char *);
	struct sockaddr *dup_sockaddr (struct sockaddr *, size_t);
	int add_or_find_if (pcap_if_t **, pcap_if_t **, const char *, u_int, const char *, char *);

#ifdef WIN32

	char *pcap_win32strerror (void);

#endif

	int install_bpf_program (pcap_t *, struct bpf_program *);
	int pcap_strcasecmp (const char *, const char *);

#ifdef __cplusplus

}

#endif

#endif

