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113 lines
2.8 KiB
113 lines
2.8 KiB
/*
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* Copyright (C) 2001-2003 FhG Fokus
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* Kamailio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* Kamailio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*! \file
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* \brief Parser :: SIP From header parsing
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*
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* \ingroup parser
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*/
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#include "parse_from.h"
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#include "parse_to.h"
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#include <stdlib.h>
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#include <string.h>
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#include "../dprint.h"
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#include "msg_parser.h"
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#include "parse_uri.h"
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#include "../ut.h"
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#include "../mem/mem.h"
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/*! \brief
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* This method is used to parse the from header.
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*
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* \note It was decided not to parse
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* anything in core that is not *needed* so this method gets called by
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* rad_acc module and any other modules that needs the FROM header.
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*
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* params: msg : sip msg
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* returns 0 on success,
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* -1 on failure.
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*/
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int parse_from_header(struct sip_msg *msg)
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{
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struct to_body *from_b;
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if(!msg->from && (parse_headers(msg, HDR_FROM_F, 0) == -1 || !msg->from)) {
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LM_ERR("bad msg or missing FROM header\n");
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goto error;
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}
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/* maybe the header is already parsed! */
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if(msg->from->parsed)
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return 0;
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/* bad luck! :-( - we have to parse it */
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/* first, get some memory */
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from_b = pkg_malloc(sizeof(struct to_body));
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if(from_b == 0) {
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LM_ERR("out of pkg_memory\n");
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goto error;
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}
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/* now parse it!! */
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memset(from_b, 0, sizeof(struct to_body));
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parse_to(msg->from->body.s, msg->from->body.s + msg->from->body.len + 1,
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from_b);
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if(from_b->error == PARSE_ERROR) {
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LM_ERR("bad From header [%.*s]\n", msg->from->body.len,
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msg->from->body.s);
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free_to(from_b);
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goto error;
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}
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msg->from->parsed = from_b;
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return 0;
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error:
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return -1;
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}
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sip_uri_t *parse_from_uri(sip_msg_t *msg)
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{
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to_body_t *tb = NULL;
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if(msg == NULL)
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return NULL;
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if(parse_from_header(msg) < 0) {
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LM_ERR("cannot parse FROM header\n");
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return NULL;
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}
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if(msg->from == NULL || get_from(msg) == NULL)
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return NULL;
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tb = get_from(msg);
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if(tb->parsed_uri.user.s != NULL || tb->parsed_uri.host.s != NULL)
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return &tb->parsed_uri;
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if(parse_uri(tb->uri.s, tb->uri.len, &tb->parsed_uri) < 0) {
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LM_ERR("failed to parse From uri\n");
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memset(&tb->parsed_uri, 0, sizeof(struct sip_uri));
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return NULL;
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}
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return &tb->parsed_uri;
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}
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