pcap.h

Go to the documentation of this file.

/* 
 * 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__
 
#include <pj/types.h>
 
PJ_BEGIN_DECL
 
typedef enum pj_pcap_link_type
{
    PJ_PCAP_LINK_TYPE_ETH   = 1
 
} pj_pcap_link_type;
 
 
typedef enum pj_pcap_proto_type
{
    PJ_PCAP_PROTO_TYPE_UDP  = 17
 
} pj_pcap_proto_type;
 
 
typedef struct pj_pcap_udp_hdr
{
    pj_uint16_t src_port;   
    pj_uint16_t dst_port;   
    pj_uint16_t len;        
    pj_uint16_t csum;       
} pj_pcap_udp_hdr;
 
 
typedef struct pj_pcap_filter
{
    pj_pcap_link_type   link;
 
    pj_pcap_proto_type  proto;
 
    pj_uint32_t         ip_src;
 
    pj_uint32_t         ip_dst;
 
    pj_uint16_t         src_port;
 
    pj_uint16_t         dst_port;
 
} pj_pcap_filter;
 
 
typedef struct pj_pcap_file pj_pcap_file;
 
 
PJ_DECL(void) pj_pcap_filter_default(pj_pcap_filter *filter);
 
PJ_DECL(pj_status_t) pj_pcap_open(pj_pool_t *pool,
                                  const char *path,
                                  pj_pcap_file **p_file);
 
PJ_DECL(pj_status_t) pj_pcap_close(pj_pcap_file *file);
 
PJ_DECL(pj_status_t) pj_pcap_set_filter(pj_pcap_file *file,
                                        const pj_pcap_filter *filter);
 
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__ */