int
read_rtsp (sockets * s)
{
char *arg[50];
int cseq, la, i, rlen;
char *proto, *transport = NULL, *useragent = NULL;
int sess_id = 0;
char buf[2000];
streams *sid = get_sid(s->sid);
if(s->buf[0]==0x24 && s->buf[1]<2)
{
if(sid)
sid->rtime = s->rtime;
int rtsp_len = s->buf[2]*256+s->buf[3];
LOG("Received RTSP over tcp packet (sock_id %d, stream %d, rlen %d) packet len: %d, type %02X %02X discarding %s...",
s->id, s->sid, s->rlen, rtsp_len , s->buf[4], s->buf[5], (s->rlen == rtsp_len+4)?"complete":"fragment" );
if(s->rlen == rtsp_len+4){ // we did not receive the entire packet
s->rlen = 0;
return 0;
}
}
if (s->rlen < 4 || !end_of_header(s->buf + s->rlen - 4))
{
if( s->rlen > RBUF - 10 )
{
LOG("Discarding %d bytes from the socket buffer, request > %d, consider increasing RBUF", s->rlen, RBUF);
s->rlen = 0;
}
LOG("read_rtsp: read %d bytes from handle %d, sock_id %d, flags %d not ending with \\r\\n\\r\\n", s->rlen, s->sock, s->id, s->flags);
if ( s->flags & 1 )
return 0;
unsigned char *new_alloc = malloc1 (RBUF);
memcpy(new_alloc, s->buf, s->rlen);
s->buf = new_alloc;
s->flags = s->flags | 1;
return 0;
}
rlen = s->rlen;
s->rlen = 0;
LOG ("read RTSP (from handle %d sock_id %d, len: %d, sid %d):\n%s", s->sock, s->id, s->rlen, s->sid, s->buf);
if( (s->type != TYPE_HTTP ) && (strncasecmp(s->buf, "GET", 3) == 0))
{
http_response (s , 404, NULL, NULL, 0, 0);
return 0;
}
la = split (arg, s->buf, 50, ' ');
cseq = 0;
if (la<2)
LOG_AND_RETURN(0, "Most likely not an RTSP packet sock_id: %d sid: %d rlen: %d, dropping ....", s->id, s->sid, rlen);
if(s->sid<0)
for (i = 0; i < la; i++)
if (strncasecmp ("Session:", arg[i], 8) == 0)
{
sess_id = map_int(header_parameter(arg, i), NULL);
s->sid = find_session_id(sess_id);
}
if(strstr(arg[1], "freq") || strstr(arg[1], "pids"))
{
int old_sid = s->sid;
sid = (streams *) setup_stream (arg[1], s);
}
sid = get_sid(s->sid);
if(sid)
sid->rtime = s->rtime;
if (sess_id)
set_session_id(s->sid, sess_id);
for (i = 0; i < la; i++)
if (strncasecmp ("CSeq:", arg[i], 5) == 0)
cseq = map_int (header_parameter(arg, i), NULL);
else if (strncasecmp ("Transport:", arg[i], 9) == 0){
transport = header_parameter(arg, i);
if( -1 == decode_transport (s, transport, opts.rrtp, opts.start_rtp))
{
http_response (s, 400, NULL, NULL, cseq, 0);
return 0;
}
}
else if (strstr (arg[i], "LIVE555"))
{
if(sid) sid->timeout = 0;
}
else if (strstr (arg[i], "Lavf"))
{
if(sid) sid->timeout = 0;
}
else if (strncasecmp ("User-Agent:", arg[i], 10) == 0)
useragent = header_parameter(arg, i);
if((strncasecmp (arg[0], "PLAY", 4) == 0) || (strncasecmp (arg[0], "GET", 3) == 0) || (strncasecmp (arg[0], "SETUP", 5) == 0))
{
char ra[100];
int rv;
if (!( sid = get_sid(s->sid)))
{
http_response (s, 454, NULL, NULL, cseq, 0);
return 0;
}
if (useragent)
strncpy(sid->useragent, useragent, 127);
if ((strncasecmp (arg[0], "PLAY", 3) == 0) || (strncasecmp (arg[0], "GET", 3) == 0))
if ((rv = start_play (sid, s)) < 0)
{
http_response (s, -rv , NULL, NULL, cseq, 0);
return 0;
}
strcpy(ra, inet_ntoa (sid->sa.sin_addr));
buf[0] = 0;
if(transport)
{
int s_timeout = (sid->timeout ? sid->timeout : opts.timeout_sec) / 1000;
switch (sid->type)
{
case STREAM_RTSP_UDP:
if (atoi (ra) < 239)
snprintf (buf, sizeof(buf), "Transport: RTP/AVP;unicast;destination=%s;source=%s;client_port=%d-%d;server_port=%d-%d\r\nSession: %010d;timeout=%d\r\ncom.ses.streamID: %d",
ra, get_sock_host (s->sock), ntohs (sid->sa.sin_port), ntohs (sid->sa.sin_port) + 1,
// opts.start_rtp, opts.start_rtp + 1,
get_sock_port(sid->rsock), get_sock_port(sid->rtcp),
get_session_id (s->sid), s_timeout, sid->sid + 1);
else
snprintf (buf, sizeof(buf), "Transport: RTP/AVP;multicast;destination=%s;port=%d-%d\r\nSession: %010d;timeout=%d\r\ncom.ses.streamID: %d",
ra, ntohs (sid->sa.sin_port), ntohs (sid->sa.sin_port) + 1,
get_session_id (s->sid), s_timeout , sid->sid + 1);
break;
case STREAM_RTSP_TCP:
snprintf(buf, sizeof(buf), "Transport: RTP/AVP/TCP;interleaved=0-1\r\nSession: %010d;timeout=%d\r\ncom.ses.streamID: %d",
get_session_id (s->sid), s_timeout, sid->sid + 1);
break;
}
}
if (strncasecmp(arg[0], "PLAY", 4) == 0)
{
char *qm = strchr(arg[1], '?');
if(qm)
*qm = 0;
if(buf[0])
strcat(buf, "\r\n");
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf) - 1, "RTP-Info: url=%s;seq=%d;rtptime=%lld\r\nRange: npt=0.000-", arg[1], getTick(),(long long int)(getTickUs()/1000000));
}
if(buf[0]==0 && sid->type == STREAM_HTTP)
snprintf(buf, sizeof(buf), "Content-Type: video/mp2t");
http_response (s, 200, buf, NULL, cseq, 0);
}
else if (strncmp (arg[0], "TEARDOWN", 8) == 0)
{
streams *sid;
buf[0] = 0;
if(get_sid(s->sid))
sprintf(buf, "Session: %010d", get_session_id(s->sid));
close_stream (s->sid);
http_response (s, 200, buf, NULL, cseq, 0);
}
else
{
if (strncmp (arg[0], "DESCRIBE", 8) == 0)
{
char sbuf[1000];
char *rv = NULL;
rv = describe_streams(s, arg[1], sbuf, sizeof(sbuf));
if (! rv)
{
http_response (s, 404, NULL, NULL, cseq, 0);
return 0;
}
snprintf(buf, sizeof(buf), "Content-type: application/sdp\r\nContent-Base: rtsp://%s/", get_sock_host(s->sock));
http_response (s, 200, buf, sbuf, cseq, 0);
}
else if (strncmp (arg[0], "OPTIONS", 8) == 0)
{
http_response (s, 200, public, NULL, cseq, 0);
}
}
char *describe_streams (sockets *s, char *req, char *sbuf, int size)
{
char *str, *stream_id;
int i, sidf, do_play = 0, streams_enabled = 0;
streams *sid;
int do_all = 1;
if (s->sid == -1 && strchr(req, '?'))
setup_stream(req, s);
sidf = get_session_id(s->sid);
sid = get_sid(s->sid);
if(sid)
do_play = sid->do_play;
// else LOG_AND_RETURN(NULL, "No session associated with sock_id %d", s->sock_id);
snprintf(sbuf,size-1,"v=0\r\no=- %010d %010d IN IP4 %s\r\ns=SatIPServer:1 %d %d %d\r\nt=0 0\r\n", sidf, sidf, get_sock_host(s->sock), getS2Adapters(), getTAdapters(), getCAdapters() );
if(strchr(req, '?'))
do_all = 0;
if((stream_id = strstr(req, "stream=")))
{
do_all = 0;
sid = get_sid(map_int(stream_id + 7, NULL) - 1);
if(sid == NULL)
return NULL;
}
if(do_all)
{
for( i=0; i<MAX_STREAMS; i++)
if(st[i].enabled)
{
int slen=strlen(sbuf);
streams_enabled ++;
snprintf(sbuf + slen, size - slen - 1, "m=video %d RTP/AVP 33\r\nc=IN IP4 0.0.0.0\r\na=control:stream=%d\r\na=fmtp:33 %s\r\na=%s\r\n",
ntohs (st[i].sa.sin_port), i+1, describe_adapter(i, st[i].adapter), st[i].do_play?"sendonly":"inactive");
if( size - slen < 10)LOG_AND_RETURN(sbuf, "DESCRIBE BUFFER is full");
}
}else{
int slen = strlen(sbuf);
snprintf(sbuf + slen, size - slen - 1, "m=video 0 RTP/AVP 33\r\nc=IN IP4 0.0.0.0\r\na=control:stream=%d\r\na=fmtp:33 %s\r\nb=AS:5000\r\na=%s\r\n",
sid->sid + 1, describe_adapter(sid->sid, sid->adapter), do_play?"sendonly":"inactive");
}
return sbuf;
}
