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146 lines
3.6 KiB
146 lines
3.6 KiB
/* $Id$
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*
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* Copyright (C) 2006-2007 VozTelecom Sistemas S.L
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* =====================================================================================
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*
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* Filename: xaddress.c
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*
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* Description: Address manipulation tools
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*
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* Version: 1.0
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* Created: 17/11/05 02:09:44 CET
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* Revision: none
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* Compiler: gcc
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*
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* Author: Elias Baixas (EB), elias@conillera.net
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* Company: VozTele.com
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*
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* =====================================================================================
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <string.h>
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#include <netinet/in.h>
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#include "../../mem/mem.h"
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#include "../../parser/parse_cseq.h"
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#include "../../dprint.h"
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#include "../../ut.h"
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#include "xaddress.h"/*for SLOG*/
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/* Encoder for CSeq header
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* Returns the length of the encoded structure in bytes
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* FORMAT (byte meanings):
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* 1: method_id
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* 4: cseqnum in network byte order
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* 2: HDR-based ptr to the method number + number length
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* 2: HDR-based ptr to the method name + method length
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*
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*/
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int encode_cseq(char *hdrstart,int hdrlen,struct cseq_body *body,unsigned char *where)
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{
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unsigned int cseqnum;
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unsigned char i;
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/*which is the first bit set to 1 ? if i==0, the first bit,
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* if i==31, the last, if i==32, none*/
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for(i=0;(!(body->method_id & (0x01<<i))) && i<32;i++);
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if(i==32)
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i=0;
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else
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i++;
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where[0]=i;
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if(str2int(&body->number,&cseqnum)<0){
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LM_ERR("str2int(cseq number)\n");
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return -1;
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}
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cseqnum=htonl(cseqnum);
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memcpy(&where[1],&cseqnum,4);/*I use 4 because 3261 says CSEq num must be 32 bits long*/
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where[5]=(unsigned char)(body->number.s-hdrstart);
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where[6]=(unsigned char)(body->number.len);
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where[7]=(unsigned char)(body->method.s-hdrstart);
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where[8]=(unsigned char)(body->method.len);
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return 9;
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}
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int print_encoded_cseq(FILE *fd,char *hdr,int hdrlen,unsigned char* payload,int paylen,char *prefix)
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{
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unsigned int cseqnum;
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char *what;
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memcpy(&cseqnum,&payload[1],4);
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cseqnum=ntohl(cseqnum);
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fprintf(fd,"%sCSEQ NUMBER=%d==%.*s\n",prefix,cseqnum,payload[6],&hdr[payload[5]]);
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switch(payload[0]){
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case 0:
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what="UNDEFINED";
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break;
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case 1:
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what="INVITE";
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break;
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case 2:
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what="CANCEL";
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break;
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case 3:
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what="ACK";
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break;
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case 4:
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what="BYE";
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break;
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case 5:
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what="INFO";
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break;
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case 6:
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what="OPTIONS";
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break;
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case 7:
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what="UPDATE";
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break;
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case 8:
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what="REGISTER";
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break;
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case 9:
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what="MESSAGE";
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break;
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case 10:
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what="SUBSCRIBE";
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break;
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case 11:
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what="NOTIFY";
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break;
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case 12:
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what="PRACK";
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break;
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case 13:
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what="REFER";
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break;
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case 14:
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what="OTHER";
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break;
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default:
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what="UNKNOWN?";
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break;
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}
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fprintf(fd,"%sCSEQ METHOD=%s==%.*s\n",prefix,what,payload[8],&hdr[payload[7]]);
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return 1;
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}
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