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482 lines
17 KiB
C
482 lines
17 KiB
C
/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
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/*
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* Copyright (c) 1993, 1994, 1995, 1996, 1997
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Computer Systems
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* Engineering Group at Lawrence Berkeley Laboratory.
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* 4. Neither the name of the University nor of the Laboratory may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#) $Header: /tcpdump/master/libpcap/pcap/pcap.h,v 1.4.2.11 2008-10-06 15:38:39 gianluca Exp $ (LBL)
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*/
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#ifndef lib_pcap_pcap_h
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#define lib_pcap_pcap_h
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#if defined( WIN32 )
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#include <pcap-stdinc.h>
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#elif defined( MSDOS )
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#include <sys/types.h>
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#include <sys/socket.h> /* u_int, u_char etc. */
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#else /* UN*X */
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#include <sys/types.h>
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#include <sys/time.h>
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#endif /* WIN32/MSDOS/UN*X */
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#ifndef PCAP_DONT_INCLUDE_PCAP_BPF_H
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#include <pcap/bpf.h>
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#endif
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#include <stdio.h>
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#ifdef HAVE_REMOTE
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/* We have to define the SOCKET here, although it has been defined in sockutils.h */
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/* This is to avoid the distribution of the 'sockutils.h' file around */
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/* (for example in the WinPcap developer's pack) */
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#ifndef SOCKET
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#ifdef WIN32
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#define SOCKET unsigned int
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#else
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#define SOCKET int
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#endif
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#endif
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#endif /* ifdef HAVE_REMOTE */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define PCAP_VERSION_MAJOR 2
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#define PCAP_VERSION_MINOR 4
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#define PCAP_ERRBUF_SIZE 256
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/*
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* Compatibility for systems that have a bpf.h that
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* predates the bpf typedefs for 64-bit support.
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*/
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#if BPF_RELEASE - 0 < 199406
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typedef int bpf_int32;
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typedef u_int bpf_u_int32;
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#endif
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typedef struct pcap pcap_t;
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typedef struct pcap_dumper pcap_dumper_t;
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typedef struct pcap_if pcap_if_t;
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typedef struct pcap_addr pcap_addr_t;
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/*
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* The first record in the file contains saved values for some
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* of the flags used in the printout phases of tcpdump.
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* Many fields here are 32 bit ints so compilers won't insert unwanted
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* padding; these files need to be interchangeable across architectures.
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*
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* Do not change the layout of this structure, in any way (this includes
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* changes that only affect the length of fields in this structure).
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*
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* Also, do not change the interpretation of any of the members of this
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* structure, in any way (this includes using values other than
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* LINKTYPE_ values, as defined in "savefile.c", in the "linktype"
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* field).
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*
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* Instead:
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*
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* introduce a new structure for the new format, if the layout
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* of the structure changed;
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*
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* send mail to "tcpdump-workers@lists.tcpdump.org", requesting
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* a new magic number for your new capture file format, and, when
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* you get the new magic number, put it in "savefile.c";
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*
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* use that magic number for save files with the changed file
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* header;
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*
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* make the code in "savefile.c" capable of reading files with
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* the old file header as well as files with the new file header
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* (using the magic number to determine the header format).
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*
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* Then supply the changes as a patch at
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*
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* http://sourceforge.net/projects/libpcap/
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*
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* so that future versions of libpcap and programs that use it (such as
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* tcpdump) will be able to read your new capture file format.
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*/
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struct pcap_file_header
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{
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bpf_u_int32 magic;
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u_short version_major;
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u_short version_minor;
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bpf_int32 thiszone; /* gmt to local correction */
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bpf_u_int32 sigfigs; /* accuracy of timestamps */
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bpf_u_int32 snaplen; /* max length saved portion of each pkt */
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bpf_u_int32 linktype; /* data link type (LINKTYPE_*) */
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};
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/*
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* Macros for the value returned by pcap_datalink_ext().
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*
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* If LT_FCS_LENGTH_PRESENT(x) is true, the LT_FCS_LENGTH(x) macro
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* gives the FCS length of packets in the capture.
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*/
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#define LT_FCS_LENGTH_PRESENT( x ) ( ( x ) & 0x04000000 )
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#define LT_FCS_LENGTH( x ) ( ( ( x ) & 0xF0000000 ) >> 28 )
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#define LT_FCS_DATALINK_EXT( x ) ( ( ( ( x ) & 0xF ) << 28 ) | 0x04000000 )
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typedef enum
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{
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PCAP_D_INOUT = 0,
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PCAP_D_IN,
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PCAP_D_OUT
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} pcap_direction_t;
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/*
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* Generic per-packet information, as supplied by libpcap.
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*
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* The time stamp can and should be a "struct timeval", regardless of
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* whether your system supports 32-bit tv_sec in "struct timeval",
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* 64-bit tv_sec in "struct timeval", or both if it supports both 32-bit
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* and 64-bit applications. The on-disk format of savefiles uses 32-bit
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* tv_sec (and tv_usec); this structure is irrelevant to that. 32-bit
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* and 64-bit versions of libpcap, even if they're on the same platform,
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* should supply the appropriate version of "struct timeval", even if
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* that's not what the underlying packet capture mechanism supplies.
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*/
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struct pcap_pkthdr
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{
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struct timeval ts; /* time stamp */
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bpf_u_int32 caplen; /* length of portion present */
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bpf_u_int32 len; /* length this packet (off wire) */
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};
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/*
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* As returned by the pcap_stats()
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*/
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struct pcap_stat
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{
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u_int ps_recv; /* number of packets received */
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u_int ps_drop; /* number of packets dropped */
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u_int ps_ifdrop; /* drops by interface XXX not yet supported */
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#ifdef HAVE_REMOTE
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u_int ps_capt; /* number of packets that are received by the application; please get rid off the Win32 ifdef */
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u_int ps_sent; /* number of packets sent by the server on the network */
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u_int ps_netdrop; /* number of packets lost on the network */
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#endif /* HAVE_REMOTE */
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};
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#ifdef MSDOS
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/*
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* As returned by the pcap_stats_ex()
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*/
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struct pcap_stat_ex
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{
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u_long rx_packets; /* total packets received */
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u_long tx_packets; /* total packets transmitted */
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u_long rx_bytes; /* total bytes received */
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u_long tx_bytes; /* total bytes transmitted */
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u_long rx_errors; /* bad packets received */
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u_long tx_errors; /* packet transmit problems */
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u_long rx_dropped; /* no space in Rx buffers */
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u_long tx_dropped; /* no space available for Tx */
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u_long multicast; /* multicast packets received */
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u_long collisions;
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/* detailed rx_errors: */
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u_long rx_length_errors;
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u_long rx_over_errors; /* receiver ring buff overflow */
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u_long rx_crc_errors; /* recv'd pkt with crc error */
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u_long rx_frame_errors; /* recv'd frame alignment error */
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u_long rx_fifo_errors; /* recv'r fifo overrun */
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u_long rx_missed_errors; /* recv'r missed packet */
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/* detailed tx_errors */
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u_long tx_aborted_errors;
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u_long tx_carrier_errors;
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u_long tx_fifo_errors;
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u_long tx_heartbeat_errors;
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u_long tx_window_errors;
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};
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#endif /* ifdef MSDOS */
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/*
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* Item in a list of interfaces.
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*/
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struct pcap_if
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{
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struct pcap_if * next;
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char * name; /* name to hand to "pcap_open_live()" */
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char * description; /* textual description of interface, or NULL */
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struct pcap_addr * addresses;
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bpf_u_int32 flags; /* PCAP_IF_ interface flags */
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};
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#define PCAP_IF_LOOPBACK 0x00000001 /* interface is loopback */
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/*
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* Representation of an interface address.
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*/
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struct pcap_addr
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{
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struct pcap_addr * next;
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struct sockaddr * addr; /* address */
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struct sockaddr * netmask; /* netmask for that address */
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struct sockaddr * broadaddr; /* broadcast address for that address */
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struct sockaddr * dstaddr; /* P2P destination address for that address */
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};
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typedef void (* pcap_handler)( u_char *,
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const struct pcap_pkthdr *,
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const u_char * );
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/*
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* Error codes for the pcap API.
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* These will all be negative, so you can check for the success or
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* failure of a call that returns these codes by checking for a
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* negative value.
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*/
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#define PCAP_ERROR -1 /* generic error code */
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#define PCAP_ERROR_BREAK -2 /* loop terminated by pcap_breakloop */
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#define PCAP_ERROR_NOT_ACTIVATED -3 /* the capture needs to be activated */
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#define PCAP_ERROR_ACTIVATED -4 /* the operation can't be performed on already activated captures */
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#define PCAP_ERROR_NO_SUCH_DEVICE -5 /* no such device exists */
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#define PCAP_ERROR_RFMON_NOTSUP -6 /* this device doesn't support rfmon (monitor) mode */
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#define PCAP_ERROR_NOT_RFMON -7 /* operation supported only in monitor mode */
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#define PCAP_ERROR_PERM_DENIED -8 /* no permission to open the device */
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#define PCAP_ERROR_IFACE_NOT_UP -9 /* interface isn't up */
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/*
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* Warning codes for the pcap API.
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* These will all be positive and non-zero, so they won't look like
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* errors.
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*/
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#define PCAP_WARNING 1 /* generic warning code */
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#define PCAP_WARNING_PROMISC_NOTSUP 2 /* this device doesn't support promiscuous mode */
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char * pcap_lookupdev( char * );
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int pcap_lookupnet( const char *,
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bpf_u_int32 *,
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bpf_u_int32 *,
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char * );
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pcap_t * pcap_create( const char *,
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char * );
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int pcap_set_snaplen( pcap_t *,
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int );
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int pcap_set_promisc( pcap_t *,
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int );
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int pcap_can_set_rfmon( pcap_t * );
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int pcap_set_rfmon( pcap_t *,
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int );
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int pcap_set_timeout( pcap_t *,
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int );
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int pcap_set_buffer_size( pcap_t *,
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int );
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int pcap_activate( pcap_t * );
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pcap_t * pcap_open_live( const char *,
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int,
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int,
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int,
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char * );
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pcap_t * pcap_open_dead( int,
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int );
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pcap_t * pcap_open_offline( const char *,
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char * );
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#if defined( WIN32 )
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pcap_t * pcap_hopen_offline( intptr_t,
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char * );
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#if !defined( LIBPCAP_EXPORTS )
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#define pcap_fopen_offline( f, b ) \
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pcap_hopen_offline( _get_osfhandle( _fileno( f ) ), b )
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#else /*LIBPCAP_EXPORTS*/
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static pcap_t * pcap_fopen_offline( FILE *,
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char * );
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#endif
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#else /*WIN32*/
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pcap_t * pcap_fopen_offline( FILE *,
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char * );
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#endif /*WIN32*/
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void pcap_close( pcap_t * );
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int pcap_loop( pcap_t *,
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int,
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pcap_handler,
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u_char * );
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int pcap_dispatch( pcap_t *,
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int,
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pcap_handler,
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u_char * );
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const u_char * pcap_next( pcap_t *,
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struct pcap_pkthdr * );
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int pcap_next_ex( pcap_t *,
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struct pcap_pkthdr **,
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const u_char ** );
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void pcap_breakloop( pcap_t * );
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int pcap_stats( pcap_t *,
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struct pcap_stat * );
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int pcap_setfilter( pcap_t *,
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struct bpf_program * );
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int pcap_setdirection( pcap_t *,
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pcap_direction_t );
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int pcap_getnonblock( pcap_t *,
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char * );
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int pcap_setnonblock( pcap_t *,
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int,
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char * );
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int pcap_inject( pcap_t *,
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const void *,
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size_t );
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int pcap_sendpacket( pcap_t *,
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const u_char *,
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int );
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const char * pcap_statustostr( int );
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const char * pcap_strerror( int );
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char * pcap_geterr( pcap_t * );
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void pcap_perror( pcap_t *,
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char * );
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int pcap_compile( pcap_t *,
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struct bpf_program *,
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const char *,
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int,
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bpf_u_int32 );
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int pcap_compile_nopcap( int,
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int,
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struct bpf_program *,
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const char *,
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int,
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bpf_u_int32 );
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void pcap_freecode( struct bpf_program * );
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int pcap_offline_filter( struct bpf_program *,
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const struct pcap_pkthdr *,
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const u_char * );
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int pcap_datalink( pcap_t * );
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int pcap_datalink_ext( pcap_t * );
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int pcap_list_datalinks( pcap_t *,
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int ** );
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int pcap_set_datalink( pcap_t *,
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int );
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void pcap_free_datalinks( int * );
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int pcap_datalink_name_to_val( const char * );
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const char * pcap_datalink_val_to_name( int );
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const char * pcap_datalink_val_to_description( int );
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int pcap_snapshot( pcap_t * );
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int pcap_is_swapped( pcap_t * );
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int pcap_major_version( pcap_t * );
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int pcap_minor_version( pcap_t * );
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/* XXX */
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FILE * pcap_file( pcap_t * );
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int pcap_fileno( pcap_t * );
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pcap_dumper_t * pcap_dump_open( pcap_t *,
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const char * );
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pcap_dumper_t * pcap_dump_fopen( pcap_t *,
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FILE * fp );
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FILE * pcap_dump_file( pcap_dumper_t * );
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long pcap_dump_ftell( pcap_dumper_t * );
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int pcap_dump_flush( pcap_dumper_t * );
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void pcap_dump_close( pcap_dumper_t * );
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void pcap_dump( u_char *,
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const struct pcap_pkthdr *,
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const u_char * );
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int pcap_findalldevs( pcap_if_t **,
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char * );
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void pcap_freealldevs( pcap_if_t * );
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const char * pcap_lib_version( void );
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/* XXX this guy lives in the bpf tree */
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u_int bpf_filter( const struct bpf_insn *,
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const u_char *,
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u_int,
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u_int );
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int bpf_validate( const struct bpf_insn * f,
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int len );
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char * bpf_image( const struct bpf_insn *,
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int );
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void bpf_dump( const struct bpf_program *,
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int );
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#if defined( WIN32 )
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/*
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* Win32 definitions
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*/
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int pcap_setbuff( pcap_t * p,
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int dim );
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int pcap_setmode( pcap_t * p,
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int mode );
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int pcap_setmintocopy( pcap_t * p,
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int size );
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#ifdef WPCAP
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/* Include file with the wpcap-specific extensions */
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#include <Win32-Extensions.h>
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#endif /* WPCAP */
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#define MODE_CAPT 0
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#define MODE_STAT 1
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#define MODE_MON 2
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#elif defined( MSDOS )
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/*
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* MS-DOS definitions
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*/
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int pcap_stats_ex( pcap_t *,
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struct pcap_stat_ex * );
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void pcap_set_wait( pcap_t * p,
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void ( * yield )( void ),
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int wait );
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u_long pcap_mac_packets( void );
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#else /* UN*X */
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/*
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* UN*X definitions
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*/
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int pcap_get_selectable_fd( pcap_t * );
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#endif /* WIN32/MSDOS/UN*X */
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#ifdef HAVE_REMOTE
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/* Includes most of the public stuff that is needed for the remote capture */
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#include <remote-ext.h>
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#endif /* HAVE_REMOTE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* ifndef lib_pcap_pcap_h */
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