pcap.h
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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.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Computer Systems
- * Engineering Group at Lawrence Berkeley Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#) $Header: /tcpdump/master/libpcap/pcap.h,v 1.52.2.5 2005/07/07 02:04:36 guy Exp $ (LBL)
- */
- #ifndef lib_pcap_h
- #define lib_pcap_h
- #if defined(WIN32)
- #include "pcap-stdinc.h"
- #elif defined(MSDOS)
- #include <sys/types.h>
- #include <sys/socket.h> /* u_int, u_char etc. */
- #else /* UN*X */
- #include <sys/types.h>
- #include <sys/time.h>
- #endif /* WIN32/MSDOS/UN*X */
- #ifndef PCAP_DONT_INCLUDE_PCAP_BPF_H
- #include "pcap-bpf.h"
- #endif
- #include <stdio.h>
- #ifdef HAVE_REMOTE
- // We have to define the SOCKET here, although it has been defined in sockutils.h
- // This is to avoid the distribution of the 'sockutils.h' file around
- // (for example in the WinPcap developer's pack)
- #ifndef SOCKET
- #ifdef WIN32
- #define SOCKET unsigned int
- #else
- #define SOCKET int
- #endif
- #endif
- #endif
- #ifdef __cplusplus
- extern "C" {
- #endif
- #define PCAP_VERSION_MAJOR 2
- #define PCAP_VERSION_MINOR 4
- #define PCAP_ERRBUF_SIZE 256
- /*
- * Compatibility for systems that have a bpf.h that
- * predates the bpf typedefs for 64-bit support.
- */
- #if BPF_RELEASE - 0 < 199406
- typedef int bpf_int32;
- typedef u_int bpf_u_int32;
- #endif
- typedef struct pcap pcap_t;
- typedef struct pcap_dumper pcap_dumper_t;
- typedef struct pcap_if pcap_if_t;
- typedef struct pcap_addr pcap_addr_t;
- /*
- * The first record in the file contains saved values for some
- * of the flags used in the printout phases of tcpdump.
- * Many fields here are 32 bit ints so compilers won't insert unwanted
- * padding; these files need to be interchangeable across architectures.
- *
- * Do not change the layout of this structure, in any way (this includes
- * changes that only affect the length of fields in this structure).
- *
- * Also, do not change the interpretation of any of the members of this
- * structure, in any way (this includes using values other than
- * LINKTYPE_ values, as defined in "savefile.c", in the "linktype"
- * field).
- *
- * Instead:
- *
- * introduce a new structure for the new format, if the layout
- * of the structure changed;
- *
- * send mail to "tcpdump-workers@tcpdump.org", requesting a new
- * magic number for your new capture file format, and, when
- * you get the new magic number, put it in "savefile.c";
- *
- * use that magic number for save files with the changed file
- * header;
- *
- * make the code in "savefile.c" capable of reading files with
- * the old file header as well as files with the new file header
- * (using the magic number to determine the header format).
- *
- * Then supply the changes to "patches@tcpdump.org", so that future
- * versions of libpcap and programs that use it (such as tcpdump) will
- * be able to read your new capture file format.
- */
- struct pcap_file_header {
- bpf_u_int32 magic;
- u_short version_major;
- u_short version_minor;
- bpf_int32 thiszone; /* gmt to local correction */
- bpf_u_int32 sigfigs; /* accuracy of timestamps */
- bpf_u_int32 snaplen; /* max length saved portion of each pkt */
- bpf_u_int32 linktype; /* data link type (LINKTYPE_*) */
- };
- typedef enum {
- PCAP_D_INOUT = 0,
- PCAP_D_IN,
- PCAP_D_OUT
- } pcap_direction_t;
- /*
- * 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 */
- };
- #ifdef MSDOS
- /*
- * As returned by the pcap_stats_ex()
- */
- struct pcap_stat_ex {
- u_long rx_packets; /* total packets received */
- u_long tx_packets; /* total packets transmitted */
- u_long rx_bytes; /* total bytes received */
- u_long tx_bytes; /* total bytes transmitted */
- u_long rx_errors; /* bad packets received */
- u_long tx_errors; /* packet transmit problems */
- u_long rx_dropped; /* no space in Rx buffers */
- u_long tx_dropped; /* no space available for Tx */
- u_long multicast; /* multicast packets received */
- u_long collisions;
- /* detailed rx_errors: */
- u_long rx_length_errors;
- u_long rx_over_errors; /* receiver ring buff overflow */
- u_long rx_crc_errors; /* recv'd pkt with crc error */
- u_long rx_frame_errors; /* recv'd frame alignment error */
- u_long rx_fifo_errors; /* recv'r fifo overrun */
- u_long rx_missed_errors; /* recv'r missed packet */
- /* detailed tx_errors */
- u_long tx_aborted_errors;
- u_long tx_carrier_errors;
- u_long tx_fifo_errors;
- u_long tx_heartbeat_errors;
- u_long tx_window_errors;
- };
- #endif
- /*
- * Item in a list of interfaces.
- */
- struct pcap_if {
- struct pcap_if *next;
- char *name; /* name to hand to "pcap_open_live()" */
- char *description; /* textual description of interface, or NULL */
- struct pcap_addr *addresses;
- bpf_u_int32 flags; /* PCAP_IF_ interface flags */
- };
- #define PCAP_IF_LOOPBACK 0x00000001 /* interface is loopback */
- /*
- * Representation of an interface address.
- */
- struct pcap_addr {
- struct pcap_addr *next;
- struct sockaddr *addr; /* address */
- struct sockaddr *netmask; /* netmask for that address */
- struct sockaddr *broadaddr; /* broadcast address for that address */
- struct sockaddr *dstaddr; /* P2P destination address for that address */
- };
- typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *,
- const u_char *);
- char *pcap_lookupdev(char *);
- int pcap_lookupnet(const char *, bpf_u_int32 *, bpf_u_int32 *, char *);
- pcap_t *pcap_open_live(const char *, int, int, int, char *);
- pcap_t *pcap_open_dead(int, int);
- pcap_t *pcap_open_offline(const char *, char *);
- pcap_t *pcap_fopen_offline(FILE *, char *);
- void pcap_close(pcap_t *);
- int pcap_loop(pcap_t *, int, pcap_handler, u_char *);
- int pcap_dispatch(pcap_t *, int, pcap_handler, u_char *);
- const u_char*
- pcap_next(pcap_t *, struct pcap_pkthdr *);
- int pcap_next_ex(pcap_t *, struct pcap_pkthdr **, const u_char **);
- void pcap_breakloop(pcap_t *);
- int pcap_stats(pcap_t *, struct pcap_stat *);
- int pcap_setfilter(pcap_t *, struct bpf_program *);
- int pcap_setdirection(pcap_t *, pcap_direction_t);
- int pcap_getnonblock(pcap_t *, char *);
- int pcap_setnonblock(pcap_t *, int, char *);
- void pcap_perror(pcap_t *, char *);
- int pcap_inject(pcap_t *, const void *, size_t);
- int pcap_sendpacket(pcap_t *, const u_char *, int);
- char *pcap_strerror(int);
- char *pcap_geterr(pcap_t *);
- int pcap_compile(pcap_t *, struct bpf_program *, char *, int,
- bpf_u_int32);
- int pcap_compile_nopcap(int, int, struct bpf_program *,
- char *, int, bpf_u_int32);
- void pcap_freecode(struct bpf_program *);
- int pcap_datalink(pcap_t *);
- int pcap_list_datalinks(pcap_t *, int **);
- int pcap_set_datalink(pcap_t *, int);
- int pcap_datalink_name_to_val(const char *);
- const char *pcap_datalink_val_to_name(int);
- const char *pcap_datalink_val_to_description(int);
- int pcap_snapshot(pcap_t *);
- int pcap_is_swapped(pcap_t *);
- int pcap_major_version(pcap_t *);
- int pcap_minor_version(pcap_t *);
- /* XXX */
- FILE *pcap_file(pcap_t *);
- int pcap_fileno(pcap_t *);
- pcap_dumper_t *pcap_dump_open(pcap_t *, const char *);
- pcap_dumper_t *pcap_dump_fopen(pcap_t *, FILE *fp);
- FILE *pcap_dump_file(pcap_dumper_t *);
- long pcap_dump_ftell(pcap_dumper_t *);
- int pcap_dump_flush(pcap_dumper_t *);
- void pcap_dump_close(pcap_dumper_t *);
- void pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *);
- int pcap_findalldevs(pcap_if_t **, char *);
- void pcap_freealldevs(pcap_if_t *);
- const char *pcap_lib_version(void);
- /* XXX this guy lives in the bpf tree */
- u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int);
- int bpf_validate(struct bpf_insn *f, int len);
- char *bpf_image(struct bpf_insn *, int);
- void bpf_dump(struct bpf_program *, int);
- #if defined(WIN32)
- /*
- * Win32 definitions
- */
- int pcap_setbuff(pcap_t *p, int dim);
- int pcap_setmode(pcap_t *p, int mode);
- int pcap_setmintocopy(pcap_t *p, int size);
- #ifdef WPCAP
- /* Include file with the wpcap-specific extensions */
- #include <Win32-Extensions.h>
- #endif /* WPCAP */
- #define MODE_CAPT 0
- #define MODE_STAT 1
- #define MODE_MON 2
- #elif defined(MSDOS)
- /*
- * MS-DOS definitions
- */
- int pcap_stats_ex (pcap_t *, struct pcap_stat_ex *);
- void pcap_set_wait (pcap_t *p, void (*yield)(void), int wait);
- u_long pcap_mac_packets (void);
- #else /* UN*X */
- /*
- * UN*X definitions
- */
- int pcap_get_selectable_fd(pcap_t *);
- #endif /* WIN32/MSDOS/UN*X */
- #ifdef HAVE_REMOTE
- /* Includes most of the public stuff that is needed for the remote capture */
- #include "remote-ext.h"
- #endif /* HAVE_REMOTE */
- #ifdef __cplusplus
- }
- #endif
- #endif