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/* $Id$
*
* Copyright (C) 2006-2007 VozTelecom Sistemas S.L
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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
*
* Kamailio 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* =====================================================================================
*
* Filename: xaddress.c
*
* Description: Address manipulation tools
*
* Version: 1.0
* Created: 17/11/05 02:09:44 CET
* Revision: none
* Compiler: gcc
*
* Author: Elias Baixas (EB), elias@conillera.net
* Company: VozTele.com
*
* =====================================================================================
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <netinet/in.h>
#include "../../mem/mem.h"
#include "../../parser/parse_cseq.h"
#include "../../dprint.h"
#include "../../ut.h"
#include "xaddress.h"/*for SLOG*/
/* Encoder for CSeq header
* Returns the length of the encoded structure in bytes
* FORMAT (byte meanings):
* 1: method_id
* 4: cseqnum in network byte order
* 2: HDR-based ptr to the method number + number length
* 2: HDR-based ptr to the method name + method length
*
*/
int encode_cseq(char *hdrstart,int hdrlen,struct cseq_body *body,unsigned char *where)
{
unsigned int cseqnum;
unsigned char i;
/*which is the first bit set to 1 ? if i==0, the first bit,
* if i==31, the last, if i==32, none*/
for(i=0;(!(body->method_id & (0x01<<i))) && i<32;i++);
if(i==32)
i=0;
else
i++;
where[0]=i;
if(str2int(&body->number,&cseqnum)<0){
LM_ERR("str2int(cseq number)\n");
return -1;
}
cseqnum=htonl(cseqnum);
memcpy(&where[1],&cseqnum,4);/*I use 4 because 3261 says CSEq num must be 32 bits long*/
where[5]=(unsigned char)(body->number.s-hdrstart);
where[6]=(unsigned char)(body->number.len);
where[7]=(unsigned char)(body->method.s-hdrstart);
where[8]=(unsigned char)(body->method.len);
return 9;
}
int print_encoded_cseq(FILE *fd,char *hdr,int hdrlen,unsigned char* payload,int paylen,char *prefix)
{
unsigned int cseqnum;
char *what;
memcpy(&cseqnum,&payload[1],4);
cseqnum=ntohl(cseqnum);
fprintf(fd,"%sCSEQ NUMBER=%d==%.*s\n",prefix,cseqnum,payload[6],&hdr[payload[5]]);
switch(payload[0]){
case 0:
what="UNDEFINED";
break;
case 1:
what="INVITE";
break;
case 2:
what="CANCEL";
break;
case 3:
what="ACK";
break;
case 4:
what="BYE";
break;
case 5:
what="INFO";
break;
case 6:
what="OPTIONS";
break;
case 7:
what="UPDATE";
break;
case 8:
what="REGISTER";
break;
case 9:
what="MESSAGE";
break;
case 10:
what="SUBSCRIBE";
break;
case 11:
what="NOTIFY";
break;
case 12:
what="PRACK";
break;
case 13:
what="REFER";
break;
case 14:
what="OTHER";
break;
default:
what="UNKNOWN?";
break;
}
fprintf(fd,"%sCSEQ METHOD=%s==%.*s\n",prefix,what,payload[8],&hdr[payload[7]]);
return 1;
}
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