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138 lines
2.7 KiB
138 lines
2.7 KiB
/*
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* $Id: parse_cseq.cpp 850 2008-04-04 21:29:36Z sayer $
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*
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* Copyright (C) 2007 Raphael Coeffic
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*
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* This file is part of SEMS, a free SIP media server.
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*
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* SEMS 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. This program is released under
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* the GPL with the additional exemption that compiling, linking,
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* and/or using OpenSSL is allowed.
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*
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* For a license to use the SEMS software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* SEMS 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "parse_cseq.h"
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#include "parse_common.h"
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#include "log.h"
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int parse_cseq(sip_cseq* cseq, const char* beg, int len)
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{
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enum {
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C_NUM=0,
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C_NUM_SWS,
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C_METHOD
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};
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const char* c = beg;
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const char* end = c+len;
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int saved_st=0, st=C_NUM;
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for(;c!=end;c++){
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switch(st){
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case C_NUM:
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switch(*c){
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case_CR_LF;
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case SP:
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case HTAB:
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st = C_NUM_SWS;
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cseq->num_str.set(beg, c-beg);
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break;
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default:
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if(!IS_DIGIT(*c)){
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return MALFORMED_SIP_MSG;
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}
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cseq->num = cseq->num*10 + *c - '0';
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break;
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}
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break;
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case C_NUM_SWS:
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switch(*c){
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case_CR_LF;
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case SP:
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case HTAB:
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break;
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default:
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st = C_METHOD;
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beg = c;
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break;
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}
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break;
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case C_METHOD:
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switch(*c){
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case_CR_LF;
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case SP:
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case HTAB:
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cseq->method_str.set(beg,c-beg);
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return 0;
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}
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break;
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case_ST_CR(*c);
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case ST_LF:
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case ST_CRLF:
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switch(saved_st){
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case C_NUM:
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cseq->num_str.set(beg,c-(st==ST_CRLF?2:1)-beg);
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break;
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case C_METHOD:
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cseq->method_str.set(beg,c-beg);
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return 0;
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}
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st = saved_st;
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break;
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}
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}
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if(st != C_METHOD){
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return MALFORMED_SIP_MSG;
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}
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cseq->method_str.set(beg,c-beg);
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if(parse_method(&cseq->method, cseq->method_str.s, cseq->method_str.len) < 0){
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DBG("Cseq method parsing failed\n");
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return MALFORMED_SIP_MSG;
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}
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return 0;
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}
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/** EMACS **
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* Local variables:
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* mode: c++
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* c-basic-offset: 4
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* End:
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*/
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