/usr/include/pjlib-util/pcap.h is in libpjproject-dev 2.1.0.0.ast20130823-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 | /* $Id: pcap.h 3553 2011-05-05 06:14:19Z nanang $ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __PJLIB_UTIL_PCAP_H__
#define __PJLIB_UTIL_PCAP_H__
/**
* @file pcap.h
* @brief Simple PCAP file reader
*/
#include <pj/types.h>
PJ_BEGIN_DECL
/**
* @defgroup PJ_PCAP Simple PCAP file reader
* @ingroup PJ_FILE_FMT
* @{
* This module describes simple utility to read PCAP file. It is not intended
* to support all PCAP features (that's what libpcap is for!), but it can
* be useful for example to playback or stream PCAP contents.
*/
/**
* Enumeration to describe supported data link types.
*/
typedef enum pj_pcap_link_type
{
/** Ethernet data link */
PJ_PCAP_LINK_TYPE_ETH = 1
} pj_pcap_link_type;
/**
* Enumeration to describe supported protocol types.
*/
typedef enum pj_pcap_proto_type
{
/** UDP protocol */
PJ_PCAP_PROTO_TYPE_UDP = 17
} pj_pcap_proto_type;
/**
* This describes UDP header, which may optionally be returned in
* #pj_pcap_read_udp() function. All fields are in network byte order.
*/
typedef struct pj_pcap_udp_hdr
{
pj_uint16_t src_port; /**< Source port. */
pj_uint16_t dst_port; /**< Destination port */
pj_uint16_t len; /**< Length. */
pj_uint16_t csum; /**< Checksum. */
} pj_pcap_udp_hdr;
/**
* This structure describes the filter to be used when reading packets from
* a PCAP file. When a filter is configured, only packets matching all the
* filter specifications will be read from PCAP file.
*/
typedef struct pj_pcap_filter
{
/**
* Select data link type, or zero to include any supported data links.
*/
pj_pcap_link_type link;
/**
* Select protocol, or zero to include all supported protocols.
*/
pj_pcap_proto_type proto;
/**
* Specify source IP address of the packets, or zero to include packets
* from any IP addresses. Note that IP address here must be in
* network byte order.
*/
pj_uint32_t ip_src;
/**
* Specify destination IP address of the packets, or zero to include packets
* destined to any IP addresses. Note that IP address here must be in
* network byte order.
*/
pj_uint32_t ip_dst;
/**
* Specify source port of the packets, or zero to include packets with
* any source port number. Note that the port number must be in network
* byte order.
*/
pj_uint16_t src_port;
/**
* Specify destination port of the packets, or zero to include packets with
* any destination port number. Note that the port number must be in network
* byte order.
*/
pj_uint16_t dst_port;
} pj_pcap_filter;
/** Opaque declaration for PCAP file */
typedef struct pj_pcap_file pj_pcap_file;
/**
* Initialize filter with default values. The default value is to allow
* any packets.
*
* @param filter Filter to be initialized.
*/
PJ_DECL(void) pj_pcap_filter_default(pj_pcap_filter *filter);
/**
* Open PCAP file.
*
* @param pool Pool to allocate memory.
* @param path File/path name.
* @param p_file Pointer to receive PCAP file handle.
*
* @return PJ_SUCCESS if file can be opened successfully.
*/
PJ_DECL(pj_status_t) pj_pcap_open(pj_pool_t *pool,
const char *path,
pj_pcap_file **p_file);
/**
* Close PCAP file.
*
* @param file PCAP file handle.
*
* @return PJ_SUCCESS on success, or the appropriate error code.
*/
PJ_DECL(pj_status_t) pj_pcap_close(pj_pcap_file *file);
/**
* Configure filter for reading the file. When filter is configured,
* only packets matching all the filter settings will be returned.
*
* @param file PCAP file handle.
* @param filter The filter.
*
* @return PJ_SUCCESS on success, or the appropriate error code.
*/
PJ_DECL(pj_status_t) pj_pcap_set_filter(pj_pcap_file *file,
const pj_pcap_filter *filter);
/**
* Read UDP payload from the next packet in the PCAP file. Optionally it
* can return the UDP header, if caller supplies it.
*
* @param file PCAP file handle.
* @param udp_hdr Optional buffer to receive UDP header.
* @param udp_payload Buffer to receive the UDP payload.
* @param udp_payload_size On input, specify the size of the buffer.
* On output, it will be filled with the actual size
* of the payload as read from the packet.
*
* @return PJ_SUCCESS on success, or the appropriate error code.
*/
PJ_DECL(pj_status_t) pj_pcap_read_udp(pj_pcap_file *file,
pj_pcap_udp_hdr *udp_hdr,
pj_uint8_t *udp_payload,
pj_size_t *udp_payload_size);
/**
* @}
*/
PJ_END_DECL
#endif /* __PJLIB_UTIL_PCAP_H__ */
|