parse_rpid.c

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00001 /*
00002  * $Id: parse_rpid.c 4720 2008-08-23 10:56:15Z henningw $
00003  *
00004  * Copyright (C) 2001-2003 Juha Heinanen
00005  *
00006  * This file is part of Kamailio, a free SIP server.
00007  *
00008  * Kamailio is free software; you can redistribute it and/or modify
00009  * it under the terms of the GNU General Public License as published by
00010  * the Free Software Foundation; either version 2 of the License, or
00011  * (at your option) any later version
00012  *
00013  * Kamailio is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016  * GNU General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU General Public License 
00019  * along with this program; if not, write to the Free Software 
00020  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00021  */
00022 
00023 /*!
00024  * \file
00025  * \brief RPID header parser
00026  * \ingroup parser
00027  */
00028 
00029 #include "parse_from.h"
00030 #include "parse_to.h"
00031 #include <stdlib.h>
00032 #include <string.h>
00033 #include "../dprint.h"
00034 #include "msg_parser.h"
00035 #include "../ut.h"
00036 #include "../mem/mem.h"
00037 
00038 
00039 /*!
00040  * This method is used to parse RPID header.
00041  * \param msg sip msg
00042  * \return 0 on success, -1 on failure.
00043  */
00044 int parse_rpid_header( struct sip_msg *msg )
00045 {
00046    struct to_body* rpid_b;
00047    
00048    if ( !msg->rpid && (parse_headers(msg, HDR_RPID_F, 0)==-1 || !msg->rpid)) {
00049       goto error;
00050    }
00051  
00052    /* maybe the header is already parsed! */
00053    if (msg->rpid->parsed)
00054       return 0;
00055  
00056    /* bad luck! :-( - we have to parse it */
00057    /* first, get some memory */
00058    rpid_b = pkg_malloc(sizeof(struct to_body));
00059    if (rpid_b == 0) {
00060       LM_ERR("out of pkg_memory\n");
00061       goto error;
00062    }
00063  
00064    /* now parse it!! */
00065    memset(rpid_b, 0, sizeof(struct to_body));
00066    parse_to(msg->rpid->body.s,msg->rpid->body.s+msg->rpid->body.len+1,rpid_b);
00067    if (rpid_b->error == PARSE_ERROR) {
00068       LM_ERR("bad rpid header\n");
00069       pkg_free(rpid_b);
00070       goto error;
00071    }
00072    msg->rpid->parsed = rpid_b;
00073  
00074    return 0;
00075  error:
00076    return -1;
00077 }