mirror of
https://github.com/mpv-player/mpv
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6e9cbdc104
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@29305 b3059339-0415-0410-9bf9-f77b7e298cf2
729 lines
15 KiB
C
729 lines
15 KiB
C
/*
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* This file was ported to MPlayer from xine CVS rtsp.c,v 1.9 2003/04/10 02:30:48
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*/
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/*
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* Copyright (C) 2000-2002 the xine project
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*
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* This file is part of xine, a free video player.
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*
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* xine 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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* xine 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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* a minimalistic implementation of rtsp protocol,
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* *not* RFC 2326 compilant yet.
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*
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* 2006, Benjamin Zores and Vincent Mussard
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* fixed a lot of RFC compliance issues.
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <assert.h>
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#include "config.h"
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#include <string.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <inttypes.h>
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#if HAVE_WINSOCK2_H
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#include <winsock2.h>
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#else
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#include <sys/socket.h>
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#endif
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#include "mp_msg.h"
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#include "rtsp.h"
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#include "rtsp_session.h"
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#include "osdep/timer.h"
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/*
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#define LOG
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*/
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/*
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* network utilities
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*/
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static int write_stream(int s, const char *buf, int len) {
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int total, timeout;
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total = 0; timeout = 30;
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while (total < len){
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int n;
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n = send (s, &buf[total], len - total, 0);
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if (n > 0)
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total += n;
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else if (n < 0) {
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#if !HAVE_WINSOCK2_H
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if ((timeout>0) && ((errno == EAGAIN) || (errno == EINPROGRESS))) {
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#else
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if ((timeout>0) && ((errno == EAGAIN) || (WSAGetLastError() == WSAEINPROGRESS))) {
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#endif
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usec_sleep (1000000); timeout--;
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} else
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return -1;
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}
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}
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return total;
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}
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static ssize_t read_stream(int fd, void *buf, size_t count) {
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ssize_t ret, total;
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total = 0;
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while (total < count) {
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ret=recv (fd, ((uint8_t*)buf)+total, count-total, 0);
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if (ret<0) {
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if(errno == EAGAIN) {
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fd_set rset;
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struct timeval timeout;
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FD_ZERO (&rset);
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FD_SET (fd, &rset);
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timeout.tv_sec = 30;
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timeout.tv_usec = 0;
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if (select (fd+1, &rset, NULL, NULL, &timeout) <= 0) {
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return -1;
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}
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continue;
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}
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mp_msg(MSGT_OPEN, MSGL_ERR, "rtsp: read error.\n");
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return ret;
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} else
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total += ret;
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/* end of stream */
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if (!ret) break;
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}
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return total;
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}
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/*
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* rtsp_get gets a line from stream
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* and returns a null terminated string.
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*/
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static char *rtsp_get(rtsp_t *s) {
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int n=1;
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char *buffer = malloc(BUF_SIZE);
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char *string = NULL;
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read_stream(s->s, buffer, 1);
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while (n<BUF_SIZE) {
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read_stream(s->s, &(buffer[n]), 1);
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if ((buffer[n-1]==0x0d)&&(buffer[n]==0x0a)) break;
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n++;
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}
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if (n>=BUF_SIZE) {
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mp_msg(MSGT_OPEN, MSGL_FATAL, "librtsp: buffer overflow in rtsp_get\n");
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exit(1);
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}
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string=malloc(n);
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memcpy(string,buffer,n-1);
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string[n-1]=0;
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#ifdef LOG
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mp_msg(MSGT_OPEN, MSGL_INFO, "librtsp: << '%s'\n", string);
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#endif
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free(buffer);
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return string;
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}
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/*
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* rtsp_put puts a line on stream
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*/
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static void rtsp_put(rtsp_t *s, const char *string) {
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int len=strlen(string);
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char *buf=malloc(len+2);
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#ifdef LOG
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mp_msg(MSGT_OPEN, MSGL_INFO, "librtsp: >> '%s'", string);
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#endif
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memcpy(buf,string,len);
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buf[len]=0x0d;
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buf[len+1]=0x0a;
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write_stream(s->s, buf, len+2);
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#ifdef LOG
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mp_msg(MSGT_OPEN, MSGL_INFO, " done.\n");
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#endif
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free(buf);
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}
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/*
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* extract server status code
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*/
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static int rtsp_get_code(const char *string) {
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char buf[4];
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int code=0;
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if (!strncmp(string, RTSP_PROTOCOL_VERSION, strlen(RTSP_PROTOCOL_VERSION)))
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{
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memcpy(buf, string+strlen(RTSP_PROTOCOL_VERSION)+1, 3);
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buf[3]=0;
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code=atoi(buf);
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} else if (!strncmp(string, RTSP_METHOD_SET_PARAMETER,8))
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{
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return RTSP_STATUS_SET_PARAMETER;
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}
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if(code != RTSP_STATUS_OK) mp_msg(MSGT_OPEN, MSGL_INFO, "librtsp: server responds: '%s'\n",string);
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return code;
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}
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/*
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* send a request
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*/
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static void rtsp_send_request(rtsp_t *s, const char *type, const char *what) {
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char **payload=s->scheduled;
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char *buf;
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buf = malloc(strlen(type)+strlen(what)+strlen(RTSP_PROTOCOL_VERSION)+3);
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sprintf(buf,"%s %s %s",type, what, RTSP_PROTOCOL_VERSION);
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rtsp_put(s,buf);
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free(buf);
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if (payload)
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while (*payload) {
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rtsp_put(s,*payload);
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payload++;
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}
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rtsp_put(s,"");
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rtsp_unschedule_all(s);
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}
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/*
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* schedule standard fields
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*/
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static void rtsp_schedule_standard(rtsp_t *s) {
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char tmp[17];
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snprintf(tmp, 17, "CSeq: %u", s->cseq);
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rtsp_schedule_field(s, tmp);
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if (s->session) {
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char *buf;
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buf = malloc(strlen(s->session)+15);
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sprintf(buf, "Session: %s", s->session);
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rtsp_schedule_field(s, buf);
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free(buf);
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}
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}
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/*
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* get the answers, if server responses with something != 200, return NULL
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*/
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static int rtsp_get_answers(rtsp_t *s) {
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char *answer=NULL;
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unsigned int answer_seq;
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char **answer_ptr=s->answers;
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int code;
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int ans_count = 0;
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answer=rtsp_get(s);
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if (!answer)
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return 0;
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code=rtsp_get_code(answer);
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free(answer);
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rtsp_free_answers(s);
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do { /* while we get answer lines */
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answer=rtsp_get(s);
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if (!answer)
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return 0;
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if (!strncasecmp(answer,"CSeq:",5)) {
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sscanf(answer,"%*s %u",&answer_seq);
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if (s->cseq != answer_seq) {
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#ifdef LOG
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mp_msg(MSGT_OPEN, MSGL_WARN, "librtsp: warning: CSeq mismatch. got %u, assumed %u", answer_seq, s->cseq);
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#endif
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s->cseq=answer_seq;
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}
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}
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if (!strncasecmp(answer,"Server:",7)) {
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char *buf = malloc(strlen(answer));
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sscanf(answer,"%*s %s",buf);
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if (s->server) free(s->server);
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s->server=strdup(buf);
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free(buf);
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}
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if (!strncasecmp(answer,"Session:",8)) {
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char *buf = calloc(1, strlen(answer));
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sscanf(answer,"%*s %s",buf);
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if (s->session) {
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if (strcmp(buf, s->session)) {
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mp_msg(MSGT_OPEN, MSGL_WARN, "rtsp: warning: setting NEW session: %s\n", buf);
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free(s->session);
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s->session=strdup(buf);
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}
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} else
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{
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#ifdef LOG
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mp_msg(MSGT_OPEN, MSGL_INFO, "rtsp: setting session id to: %s\n", buf);
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#endif
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s->session=strdup(buf);
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}
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free(buf);
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}
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*answer_ptr=answer;
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answer_ptr++;
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} while ((strlen(answer)!=0) && (++ans_count < MAX_FIELDS));
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s->cseq++;
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*answer_ptr=NULL;
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rtsp_schedule_standard(s);
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return code;
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}
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/*
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* send an ok message
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*/
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int rtsp_send_ok(rtsp_t *s) {
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char cseq[16];
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rtsp_put(s, "RTSP/1.0 200 OK");
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sprintf(cseq,"CSeq: %u", s->cseq);
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rtsp_put(s, cseq);
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rtsp_put(s, "");
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return 0;
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}
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/*
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* implementation of must-have rtsp requests; functions return
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* server status code.
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*/
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int rtsp_request_options(rtsp_t *s, const char *what) {
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char *buf;
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if (what) {
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buf=strdup(what);
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} else
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{
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buf=malloc(strlen(s->host)+16);
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sprintf(buf,"rtsp://%s:%i", s->host, s->port);
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}
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rtsp_send_request(s,RTSP_METHOD_OPTIONS,buf);
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free(buf);
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return rtsp_get_answers(s);
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}
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int rtsp_request_describe(rtsp_t *s, const char *what) {
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char *buf;
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if (what) {
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buf=strdup(what);
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} else
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{
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buf=malloc(strlen(s->host)+strlen(s->path)+16);
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sprintf(buf,"rtsp://%s:%i/%s", s->host, s->port, s->path);
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}
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rtsp_send_request(s,RTSP_METHOD_DESCRIBE,buf);
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free(buf);
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return rtsp_get_answers(s);
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}
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int rtsp_request_setup(rtsp_t *s, const char *what, char *control) {
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char *buf = NULL;
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if (what)
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buf = strdup (what);
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else
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{
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int len = strlen (s->host) + strlen (s->path) + 16;
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if (control)
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len += strlen (control) + 1;
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buf = malloc (len);
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sprintf (buf, "rtsp://%s:%i/%s%s%s", s->host, s->port, s->path,
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control ? "/" : "", control ? control : "");
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}
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rtsp_send_request (s, RTSP_METHOD_SETUP, buf);
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free (buf);
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return rtsp_get_answers (s);
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}
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int rtsp_request_setparameter(rtsp_t *s, const char *what) {
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char *buf;
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if (what) {
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buf=strdup(what);
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} else
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{
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buf=malloc(strlen(s->host)+strlen(s->path)+16);
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sprintf(buf,"rtsp://%s:%i/%s", s->host, s->port, s->path);
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}
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rtsp_send_request(s,RTSP_METHOD_SET_PARAMETER,buf);
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free(buf);
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return rtsp_get_answers(s);
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}
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int rtsp_request_play(rtsp_t *s, const char *what) {
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char *buf;
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int ret;
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if (what) {
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buf=strdup(what);
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} else
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{
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buf=malloc(strlen(s->host)+strlen(s->path)+16);
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sprintf(buf,"rtsp://%s:%i/%s", s->host, s->port, s->path);
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}
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rtsp_send_request(s,RTSP_METHOD_PLAY,buf);
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free(buf);
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ret = rtsp_get_answers (s);
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if (ret == RTSP_STATUS_OK)
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s->server_state = RTSP_PLAYING;
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return ret;
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}
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int rtsp_request_teardown(rtsp_t *s, const char *what) {
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char *buf;
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if (what)
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buf = strdup (what);
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else
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{
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buf =
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malloc (strlen (s->host) + strlen (s->path) + 16);
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sprintf (buf, "rtsp://%s:%i/%s", s->host, s->port, s->path);
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}
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rtsp_send_request (s, RTSP_METHOD_TEARDOWN, buf);
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free (buf);
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/* after teardown we're done with RTSP streaming, no need to get answer as
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reading more will only result to garbage and buffer overflow */
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return RTSP_STATUS_OK;
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}
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/*
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* read opaque data from stream
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*/
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int rtsp_read_data(rtsp_t *s, char *buffer, unsigned int size) {
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int i,seq;
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if (size>=4) {
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i=read_stream(s->s, buffer, 4);
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if (i<4) return i;
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if (((buffer[0]=='S')&&(buffer[1]=='E')&&(buffer[2]=='T')&&(buffer[3]=='_')) ||
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((buffer[0]=='O')&&(buffer[1]=='P')&&(buffer[2]=='T')&&(buffer[3]=='I'))) // OPTIONS
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{
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char *rest=rtsp_get(s);
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if (!rest)
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return -1;
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seq=-1;
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do {
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free(rest);
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rest=rtsp_get(s);
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if (!rest)
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return -1;
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if (!strncasecmp(rest,"CSeq:",5))
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sscanf(rest,"%*s %u",&seq);
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} while (strlen(rest)!=0);
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free(rest);
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if (seq<0) {
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#ifdef LOG
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mp_msg(MSGT_OPEN, MSGL_WARN, "rtsp: warning: CSeq not recognized!\n");
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#endif
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seq=1;
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}
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/* let's make the server happy */
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rtsp_put(s, "RTSP/1.0 451 Parameter Not Understood");
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rest=malloc(17);
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sprintf(rest,"CSeq: %u", seq);
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rtsp_put(s, rest);
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free(rest);
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rtsp_put(s, "");
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i=read_stream(s->s, buffer, size);
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} else
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{
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i=read_stream(s->s, buffer+4, size-4);
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i+=4;
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}
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} else
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i=read_stream(s->s, buffer, size);
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#ifdef LOG
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mp_msg(MSGT_OPEN, MSGL_INFO, "librtsp: << %d of %d bytes\n", i, size);
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#endif
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return i;
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}
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/*
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* connect to a rtsp server
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*/
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//rtsp_t *rtsp_connect(const char *mrl, const char *user_agent) {
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rtsp_t *rtsp_connect(int fd, char* mrl, char *path, char *host, int port, char *user_agent) {
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rtsp_t *s;
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int i;
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if (fd < 0) {
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mp_msg(MSGT_OPEN, MSGL_ERR, "rtsp: failed to connect to '%s'\n", host);
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return NULL;
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}
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s = malloc(sizeof(rtsp_t));
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for (i=0; i<MAX_FIELDS; i++) {
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s->answers[i]=NULL;
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s->scheduled[i]=NULL;
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}
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s->s = fd;
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s->server=NULL;
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s->server_state=0;
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s->server_caps=0;
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s->cseq=0;
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s->session=NULL;
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if (user_agent)
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s->user_agent=strdup(user_agent);
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else
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s->user_agent=strdup("User-Agent: RealMedia Player Version 6.0.9.1235 (linux-2.0-libc6-i386-gcc2.95)");
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s->mrl = strdup(mrl);
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s->host = strdup(host);
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s->port = port;
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s->path = strdup(path);
|
|
while (*path == '/')
|
|
path++;
|
|
if ((s->param = strchr(s->path, '?')) != NULL)
|
|
s->param++;
|
|
//mp_msg(MSGT_OPEN, MSGL_INFO, "path=%s\n", s->path);
|
|
//mp_msg(MSGT_OPEN, MSGL_INFO, "param=%s\n", s->param ? s->param : "NULL");
|
|
|
|
s->server_state=RTSP_CONNECTED;
|
|
|
|
/* now let's send an options request. */
|
|
rtsp_schedule_field(s, "CSeq: 1");
|
|
rtsp_schedule_field(s, s->user_agent);
|
|
rtsp_schedule_field(s, "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7");
|
|
rtsp_schedule_field(s, "PlayerStarttime: [28/03/2003:22:50:23 00:00]");
|
|
rtsp_schedule_field(s, "CompanyID: KnKV4M4I/B2FjJ1TToLycw==");
|
|
rtsp_schedule_field(s, "GUID: 00000000-0000-0000-0000-000000000000");
|
|
rtsp_schedule_field(s, "RegionData: 0");
|
|
rtsp_schedule_field(s, "ClientID: Linux_2.4_6.0.9.1235_play32_RN01_EN_586");
|
|
/*rtsp_schedule_field(s, "Pragma: initiate-session");*/
|
|
rtsp_request_options(s, NULL);
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
/*
|
|
* search in answers for tags. returns a pointer to the content
|
|
* after the first matched tag. returns NULL if no match found.
|
|
*/
|
|
|
|
char *rtsp_search_answers(rtsp_t *s, const char *tag) {
|
|
|
|
char **answer;
|
|
char *ptr;
|
|
|
|
if (!s->answers) return NULL;
|
|
answer=s->answers;
|
|
|
|
while (*answer) {
|
|
if (!strncasecmp(*answer,tag,strlen(tag))) {
|
|
ptr=strchr(*answer,':');
|
|
if (!ptr) return NULL;
|
|
ptr++;
|
|
while(*ptr==' ') ptr++;
|
|
return ptr;
|
|
}
|
|
answer++;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* session id management
|
|
*/
|
|
|
|
void rtsp_set_session(rtsp_t *s, const char *id) {
|
|
|
|
if (s->session) free(s->session);
|
|
|
|
s->session=strdup(id);
|
|
|
|
}
|
|
|
|
char *rtsp_get_session(rtsp_t *s) {
|
|
|
|
return s->session;
|
|
|
|
}
|
|
|
|
char *rtsp_get_mrl(rtsp_t *s) {
|
|
|
|
return s->mrl;
|
|
|
|
}
|
|
|
|
char *rtsp_get_param(rtsp_t *s, const char *p) {
|
|
int len;
|
|
char *param;
|
|
if (!s->param)
|
|
return NULL;
|
|
if (!p)
|
|
return strdup(s->param);
|
|
len = strlen(p);
|
|
param = s->param;
|
|
while (param && *param) {
|
|
char *nparam = strchr(param, '&');
|
|
if (strncmp(param, p, len) == 0 && param[len] == '=') {
|
|
param += len + 1;
|
|
len = nparam ? nparam - param : strlen(param);
|
|
nparam = malloc(len + 1);
|
|
memcpy(nparam, param, len);
|
|
nparam[len] = 0;
|
|
return nparam;
|
|
}
|
|
param = nparam ? nparam + 1 : NULL;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* schedules a field for transmission
|
|
*/
|
|
|
|
void rtsp_schedule_field(rtsp_t *s, const char *string) {
|
|
|
|
int i=0;
|
|
|
|
if (!string) return;
|
|
|
|
while(s->scheduled[i]) {
|
|
i++;
|
|
}
|
|
s->scheduled[i]=strdup(string);
|
|
}
|
|
|
|
/*
|
|
* removes the first scheduled field which prefix matches string.
|
|
*/
|
|
|
|
void rtsp_unschedule_field(rtsp_t *s, const char *string) {
|
|
|
|
char **ptr=s->scheduled;
|
|
|
|
if (!string) return;
|
|
|
|
while(*ptr) {
|
|
if (!strncmp(*ptr, string, strlen(string)))
|
|
break;
|
|
else
|
|
ptr++;
|
|
}
|
|
if (*ptr) free(*ptr);
|
|
ptr++;
|
|
do {
|
|
*(ptr-1)=*ptr;
|
|
} while(*ptr);
|
|
}
|
|
|
|
/*
|
|
* unschedule all fields
|
|
*/
|
|
|
|
void rtsp_unschedule_all(rtsp_t *s) {
|
|
|
|
char **ptr;
|
|
|
|
if (!s->scheduled) return;
|
|
ptr=s->scheduled;
|
|
|
|
while (*ptr) {
|
|
free(*ptr);
|
|
*ptr=NULL;
|
|
ptr++;
|
|
}
|
|
}
|
|
/*
|
|
* free answers
|
|
*/
|
|
|
|
void rtsp_free_answers(rtsp_t *s) {
|
|
|
|
char **answer;
|
|
|
|
if (!s->answers) return;
|
|
answer=s->answers;
|
|
|
|
while (*answer) {
|
|
free(*answer);
|
|
*answer=NULL;
|
|
answer++;
|
|
}
|
|
}
|