parse_refer_to.c

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/*
 * Copyright (C) 2005 Juha Heinanen
 *
 * This file is part of ser, a free SIP server.
 *
 * ser 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
 *
 * ser 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
 */

#include "parse_from.h"
#include "parse_to.h"
#include <stdlib.h>
#include <string.h>
#include "../dprint.h"
#include "msg_parser.h"
#include "../ut.h"
#include "../mem/mem.h"

 
int parse_refer_to_header( struct sip_msg *msg )
{
        struct to_body* refer_to_b;
        
        if ( !msg->refer_to &&
             (parse_headers(msg, HDR_REFER_TO_F,0)==-1 || !msg->refer_to)) {
                goto error;
        }
 
        /* maybe the header is already parsed! */
        if (msg->refer_to->parsed)
                return 0;
 
        /* bad luck! :-( - we have to parse it */
        /* first, get some memory */
        refer_to_b = pkg_malloc(sizeof(struct to_body));
        if (refer_to_b == 0) {
                LOG(L_ERR, "ERROR:parse_refer_to_header: out of pkg_memory\n");
                goto error;
        }
 
        /* now parse it!! */
        memset(refer_to_b, 0, sizeof(struct to_body));
        parse_to(msg->refer_to->body.s,
                 msg->refer_to->body.s + msg->refer_to->body.len+1,
                 refer_to_b);
        if (refer_to_b->error == PARSE_ERROR) {
                LOG(L_ERR, "ERROR:parse_refer_to_header: bad Refer-To header\n");
                free_to(refer_to_b);
                goto error;
        }
        msg->refer_to->parsed = refer_to_b;
 
        return 0;
 error:
        return -1;
}