rtsp_setup.c

linuxUNIX下跑的一套服务端程序

/* * 
 *  $Id: RTSP_setup.c 176 2005-06-28 14:47:59Z shawill $
 *  
 *  This file is part of Fenice
 *
 *  Fenice -- Open Media Server
 *
 *  Copyright (C) 2004 by
 *  	
 *	- Giampaolo Mancini	<[e-mail]>
 *	- Francesco Varano	<[e-mail]>
 *	- Marco Penno		<[e-mail]>
 *	- Federico Ridolfo	<[e-mail]>
 *	- Eugenio Menegatti 	<[e-mail]>
 *	- Stefano Cau
 *	- Giuliano Emma
 *	- Stefano Oldrini
 * 
 *  Fenice 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.
 *
 *  Fenice 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 Fenice; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *  
 * */

#include <stdio.h>
#include <string.h>
#include <sys/time.h>		// shawill: for gettimeofday
#include <stdlib.h>		// shawill: for rand, srand
#include <unistd.h>		// shawill: for close
// shawill: for inet_aton
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#include <fenice/rtsp.h>
#include <fenice/socket.h>
#include <fenice/utils.h>
#include <fenice/prefs.h>
#include <fenice/multicast.h>
#include <fenice/fnc_log.h>

/*
 	****************************************************************
 	*			SETUP METHOD HANDLING
 	****************************************************************
*/


int RTSP_setup(RTSP_buffer * rtsp, RTSP_session ** new_session)
{
	char address[16];
	int valid_url;
	char object[255], server[255], trash[255];
	char url[255];
	unsigned short port;
	RTSP_session *sp;
	RTP_session *sp2, *sp2_prec;
	int SessionID = 0;
	port_pair cli_ports;
	port_pair ser_ports;
	struct timeval now_tmp;
	char *p = NULL, *q = NULL;
	unsigned int start_seq, start_rtptime;
	char line[255];
	media_entry *list, *matching_me, req;
	struct sockaddr_storage rtsp_peer;
	socklen_t namelen = sizeof(rtsp_peer);
	unsigned long ssrc;
	SD_descr *matching_descr;


	memset(&req, 0, sizeof(req));
	// Parse the input message
	// Get the CSeq 


	if ((p = strstr(rtsp->in_buffer, HDR_CSEQ)) == NULL) {
		send_reply(400, 0, rtsp);	/* Bad Request */
		return ERR_NOERROR;
	} else {
		if (sscanf(p, "%254s %d", trash, &(rtsp->rtsp_cseq)) != 2) {
			send_reply(400, 0, rtsp);	/* Bad Request */
			return ERR_NOERROR;
		}
	}
	/*if ((p = strstr(rtsp->in_buffer, "ssrc")) != NULL) {
		p = strchr(p, '=');
		sscanf(p + 1, "%lu", &ssrc);
	} else {*/
		ssrc = random32(0);
	//}
	
	if ((p = strstr(rtsp->in_buffer, "client_port")) == NULL && strstr(rtsp->in_buffer, "multicast") == NULL) {
		send_reply(406, "Require: Transport settings of rtp/udp;port=nnnn. ", rtsp);	/* Not Acceptable */
		return ERR_NOERROR;
	}
	// Start parsing the Transport header
	if ((p = strstr(rtsp->in_buffer, HDR_TRANSPORT)) == NULL) {
		send_reply(406, "Require: Transport settings of rtp/udp;port=nnnn. ", rtsp);	/* Not Acceptable */
		return ERR_NOERROR;
	}
	if (sscanf(p, "%10s%255s", trash, line) != 2) {
		fnc_log(FNC_LOG_ERR,"SETUP request malformed\n");
		send_reply(400, 0, rtsp);	/* Bad Request */
		return ERR_NOERROR;
	}
	
	if(strstr(line, "client_port") != NULL){
		p = strstr(line, "client_port");
		p = strstr(p, "=");
		sscanf(p + 1, "%d", &(cli_ports.RTP));
		p = strstr(p, "-");
		sscanf(p + 1, "%d", &(cli_ports.RTCP));
	}

	/* Get the URL */
	if (!sscanf(rtsp->in_buffer, " %*s %254s ", url)) {
		send_reply(400, 0, rtsp);	/* bad request */
		return ERR_NOERROR;
	}
	/* Validate the URL */
	if (!parse_url(url, server, &port, object)) {	//object