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[vlc.git] / modules / misc / rtsp.c
blob061ca154a090396cebc74ec9def3b8e05982de57
1 /*****************************************************************************
2 * rtsp.c: rtsp VoD server module
3 *****************************************************************************
4 * Copyright (C) 2003-2006 the VideoLAN team
5 * $Id$
6 *
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
24
25 /*****************************************************************************
26 * Preamble
27 *****************************************************************************/
28
29 #ifdef HAVE_CONFIG_H
30 # include "config.h"
31 #endif
32
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_input.h>
36 #include <vlc_sout.h>
37 #include <vlc_block.h>
38
39 #include <vlc_httpd.h>
40 #include <vlc_vod.h>
41 #include <vlc_url.h>
42 #include <vlc_network.h>
43 #include <vlc_charset.h>
44 #include <vlc_strings.h>
45 #include <vlc_rand.h>
46
47 #ifndef WIN32
48 # include <locale.h>
49 #endif
50
51 #ifdef HAVE_XLOCALE_H
52 # include <xlocale.h>
53 #endif
54
55 /*****************************************************************************
56 * Module descriptor
57 *****************************************************************************/
58 static int Open ( vlc_object_t * );
59 static void Close( vlc_object_t * );
60
61 #define THROTTLE_TEXT N_( "Maximum number of connections" )
62 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
63 "that can connect to the RTSP VOD. 0 means no limit." )
64
65 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
66
67 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
68 "session string" )
69 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
70 "to the RTSP session ID string. Setting it to a negative number removes " \
71 "the timeout option entirely. This is needed by some IPTV STBs (such as " \
72 "those made by HansunTech) which get confused by it. The default is 5." )
73
74 vlc_module_begin ()
75 set_shortname( N_("RTSP VoD" ) )
76 set_description( N_("RTSP VoD server") )
77 set_category( CAT_SOUT )
78 set_subcategory( SUBCAT_SOUT_VOD )
79 set_capability( "vod server", 1 )
80 set_callbacks( Open, Close )
81 add_shortcut( "rtsp" )
82 add_string( "rtsp-raw-mux", "ts", RAWMUX_TEXT,
83 RAWMUX_TEXT, true )
84 add_integer( "rtsp-throttle-users", 0, THROTTLE_TEXT,
85 THROTTLE_LONGTEXT, true )
86 add_integer( "rtsp-session-timeout", 5, SESSION_TIMEOUT_TEXT,
87 SESSION_TIMEOUT_LONGTEXT, true )
88 vlc_module_end ()
89
90 /*****************************************************************************
91 * Exported prototypes
92 *****************************************************************************/
93
94 typedef struct media_es_t media_es_t;
95
96 typedef struct
97 {
98 media_es_t *p_media_es;
99 int i_port;
100
101 } rtsp_client_es_t;
102
103 typedef struct
104 {
105 char *psz_session;
106
107 bool b_playing; /* is it in "play" state */
108 int i_port_raw;
109
110 int i_es;
111 rtsp_client_es_t **es;
112
113 } rtsp_client_t;
114
115 struct media_es_t
116 {
117 /* VoD server */
118 vod_t *p_vod;
119
120 /* RTSP server */
121 httpd_url_t *p_rtsp_url;
122
123 vod_media_t *p_media;
124
125 es_format_t fmt;
126 uint8_t i_payload_type;
127 const char *psz_ptname;
128 unsigned i_clock_rate;
129 unsigned i_channels;
130 char *psz_fmtp;
131
132 };
133
134 struct vod_media_t
135 {
136 int id;
137
138 /* VoD server */
139 vod_t *p_vod;
140
141 /* RTSP server */
142 httpd_url_t *p_rtsp_url;
143 char *psz_rtsp_control_v4;
144 char *psz_rtsp_control_v6;
145 char *psz_rtsp_path;
146
147 vlc_mutex_t lock;
148
149 /* ES list */
150 int i_es;
151 media_es_t **es;
152 const char *psz_mux;
153 bool b_raw;
154
155 /* RTSP client */
156 int i_rtsp;
157 rtsp_client_t **rtsp;
158
159 /* Infos */
160 mtime_t i_length;
161 };
162
163 struct vod_sys_t
164 {
165 /* RTSP server */
166 httpd_host_t *p_rtsp_host;
167 char *psz_path;
168 int i_throttle_users;
169 int i_connections;
170
171 char *psz_raw_mux;
172
173 int i_session_timeout;
174
175 /* List of media */
176 int i_media_id;
177 int i_media;
178 vod_media_t **media;
179
180 /* */
181 vlc_thread_t thread;
182 block_fifo_t *p_fifo_cmd;
183 };
184
185 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
186 typedef enum
187 {
188 RTSP_CMD_TYPE_NONE, /* Exit requested */
189
190 RTSP_CMD_TYPE_PLAY,
191 RTSP_CMD_TYPE_PAUSE,
192 RTSP_CMD_TYPE_STOP,
193 RTSP_CMD_TYPE_SEEK,
194 RTSP_CMD_TYPE_REWIND,
195 RTSP_CMD_TYPE_FORWARD,
196
197 RTSP_CMD_TYPE_ADD,
198 RTSP_CMD_TYPE_DEL,
199 } rtsp_cmd_type_t;
200
201 /* */
202 typedef struct
203 {
204 int i_type;
205 int i_media_id;
206 vod_media_t *p_media;
207 char *psz_session;
208 char *psz_arg;
209 int64_t i_arg;
210 double f_arg;
211 } rtsp_cmd_t;
212
213 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
214 static void MediaDel( vod_t *, vod_media_t * );
215 static void MediaAskDel ( vod_t *, vod_media_t * );
216 static int MediaAddES( vod_t *, vod_media_t *, es_format_t * );
217 static void MediaDelES( vod_t *, vod_media_t *, es_format_t * );
218
219 static void* CommandThread( void * );
220 static void CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *,
221 const char *psz_session, int64_t i_arg,
222 double f_arg, const char *psz_arg );
223
224 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
225 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
226 static void RtspClientDel( vod_media_t *, rtsp_client_t * );
227
228 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
229 httpd_message_t *, const httpd_message_t * );
230 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
231 httpd_message_t *, const httpd_message_t * );
232
233 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
234
235 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
236 {
237 static const char hex[16] = "0123456789abcdef";
238
239 for( int i = 0; i < i_data; i++ )
240 {
241 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
242 s[2*i+1] = hex[(p_data[i] )&0xf];
243 }
244 s[2*i_data] = '\0';
245 }
246
247 /*****************************************************************************
248 * Open: Starts the RTSP server module
249 *****************************************************************************/
250 static int Open( vlc_object_t *p_this )
251 {
252 vod_t *p_vod = (vod_t *)p_this;
253 vod_sys_t *p_sys = NULL;
254 char *psz_url = NULL;
255 vlc_url_t url;
256
257 psz_url = var_InheritString( p_vod, "rtsp-host" );
258 vlc_UrlParse( &url, psz_url, 0 );
259 free( psz_url );
260
261 p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
262 if( !p_sys ) goto error;
263 p_sys->p_rtsp_host = 0;
264
265 p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
266
267 p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
268 msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
269 p_sys->i_connections = 0;
270
271 p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
272
273 p_sys->p_rtsp_host = vlc_rtsp_HostNew( VLC_OBJECT(p_vod) );
274 if( !p_sys->p_rtsp_host )
275 {
276 msg_Err( p_vod, "cannot create RTSP server" );
277 goto error;
278 }
279
280 p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
281
282 vlc_UrlClean( &url );
283
284 TAB_INIT( p_sys->i_media, p_sys->media );
285 p_sys->i_media_id = 0;
286
287 p_vod->pf_media_new = MediaNew;
288 p_vod->pf_media_del = MediaAskDel;
289
290 p_sys->p_fifo_cmd = block_FifoNew();
291 if( vlc_clone( &p_sys->thread, CommandThread, p_vod, VLC_THREAD_PRIORITY_LOW ) )
292 {
293 msg_Err( p_vod, "cannot spawn rtsp vod thread" );
294 block_FifoRelease( p_sys->p_fifo_cmd );
295 free( p_sys->psz_path );
296 goto error;
297 }
298
299 return VLC_SUCCESS;
300
301 error:
302 if( p_sys )
303 {
304 if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
305 free( p_sys->psz_raw_mux );
306 free( p_sys );
307 }
308 vlc_UrlClean( &url );
309
310 return VLC_EGENERIC;
311 }
312
313 /*****************************************************************************
314 * Close:
315 *****************************************************************************/
316 static void Close( vlc_object_t * p_this )
317 {
318 vod_t *p_vod = (vod_t *)p_this;
319 vod_sys_t *p_sys = p_vod->p_sys;
320
321 /* Stop command thread */
322 CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0, 0.0, NULL );
323 vlc_join( p_sys->thread, NULL );
324
325 while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
326 {
327 rtsp_cmd_t cmd;
328 block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
329 memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
330 block_Release( p_block_cmd );
331 if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
332 MediaDel(p_vod, cmd.p_media);
333 free( cmd.psz_session );
334 free( cmd.psz_arg );
335 }
336 block_FifoRelease( p_sys->p_fifo_cmd );
337
338 httpd_HostDelete( p_sys->p_rtsp_host );
339 var_Destroy( p_this, "rtsp-session-timeout" );
340 var_Destroy( p_this, "rtsp-throttle-users" );
341 var_Destroy( p_this, "rtsp-raw-mux" );
342
343 /* Check VLM is not buggy */
344 if( p_sys->i_media > 0 )
345 msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
346 TAB_CLEAN( p_sys->i_media, p_sys->media );
347
348 free( p_sys->psz_path );
349 free( p_sys->psz_raw_mux );
350 free( p_sys );
351 }
352
353 /*****************************************************************************
354 * Media handling
355 *****************************************************************************/
356 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
357 input_item_t *p_item )
358 {
359 vod_sys_t *p_sys = p_vod->p_sys;
360
361 vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
362 if( !p_media )
363 return NULL;
364
365 p_media->id = p_sys->i_media_id++;
366 TAB_INIT( p_media->i_es, p_media->es );
367 p_media->psz_mux = NULL;
368 TAB_INIT( p_media->i_rtsp, p_media->rtsp );
369 p_media->b_raw = false;
370
371 if( asprintf( &p_media->psz_rtsp_path, "%s%s",
372 p_sys->psz_path, psz_name ) <0 )
373 return NULL;
374 p_media->p_rtsp_url =
375 httpd_UrlNew( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL, NULL );
376
377 if( !p_media->p_rtsp_url )
378 {
379 msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
380 free( p_media->psz_rtsp_path );
381 free( p_media );
382 return NULL;
383 }
384
385 msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
386
387 if( asprintf( &p_media->psz_rtsp_control_v4,
388 "rtsp://%%s:%%d%s/trackID=%%d",
389 p_media->psz_rtsp_path ) < 0 )
390 {
391 httpd_UrlDelete( p_media->p_rtsp_url );
392 free( p_media->psz_rtsp_path );
393 free( p_media );
394 return NULL;
395 }
396 if( asprintf( &p_media->psz_rtsp_control_v6,
397 "rtsp://[%%s]:%%d%s/trackID=%%d",
398 p_media->psz_rtsp_path ) < 0 )
399 {
400 httpd_UrlDelete( p_media->p_rtsp_url );
401 free( p_media->psz_rtsp_path );
402 free( p_media );
403 return NULL;
404 }
405
406 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
407 RtspCallback, (void*)p_media );
408 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
409 RtspCallback, (void*)p_media );
410 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
411 RtspCallback, (void*)p_media );
412 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
413 RtspCallback, (void*)p_media );
414 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
415 RtspCallback, (void*)p_media );
416 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
417 RtspCallback, (void*)p_media );
418
419 p_media->p_vod = p_vod;
420
421 vlc_mutex_init( &p_media->lock );
422
423 p_media->i_length = input_item_GetDuration( p_item );
424
425 vlc_mutex_lock( &p_item->lock );
426 msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
427 for( int i = 0; i < p_item->i_es; i++ )
428 {
429 MediaAddES( p_vod, p_media, p_item->es[i] );
430 }
431 vlc_mutex_unlock( &p_item->lock );
432
433 CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0, 0.0, NULL );
434 return p_media;
435 }
436
437 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
438 {
439 CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0, 0.0, NULL );
440 }
441
442 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
443 {
444 vod_sys_t *p_sys = p_vod->p_sys;
445
446 msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
447
448 TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
449
450 httpd_UrlDelete( p_media->p_rtsp_url );
451
452 while( p_media->i_rtsp > 0 )
453 RtspClientDel( p_media, p_media->rtsp[0] );
454 TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
455
456 free( p_media->psz_rtsp_path );
457 free( p_media->psz_rtsp_control_v6 );
458 free( p_media->psz_rtsp_control_v4 );
459
460 while( p_media->i_es )
461 MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
462 TAB_CLEAN( p_media->i_es, p_media->es );
463
464 vlc_mutex_destroy( &p_media->lock );
465
466 free( p_media );
467 }
468
469 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
470 {
471 char *psz_urlc;
472
473 media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
474 if( !p_es )
475 return VLC_ENOMEM;
476
477 p_media->psz_mux = NULL;
478
479 /* TODO: update SDP, etc... */
480 if( asprintf( &psz_urlc, "%s/trackID=%d",
481 p_media->psz_rtsp_path, p_media->i_es ) < 0 )
482 {
483 free( p_es );
484 return VLC_ENOMEM;
485 }
486 msg_Dbg( p_vod, " - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
487
488 /* Dynamic payload. No conflict since we put each ES in its own
489 * RTP session */
490 p_es->i_payload_type = 96;
491 p_es->i_clock_rate = 90000;
492 p_es->i_channels = 1;
493
494 switch( p_fmt->i_codec )
495 {
496 case VLC_CODEC_S16B:
497 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
498 {
499 p_es->i_payload_type = 11;
500 }
501 else if( p_fmt->audio.i_channels == 2 &&
502 p_fmt->audio.i_rate == 44100 )
503 {
504 p_es->i_payload_type = 10;
505 }
506 p_es->psz_ptname = "L16";
507 p_es->i_clock_rate = p_fmt->audio.i_rate;
508 p_es->i_channels = p_fmt->audio.i_channels;
509 break;
510 case VLC_CODEC_U8:
511 p_es->psz_ptname = "L8";
512 p_es->i_clock_rate = p_fmt->audio.i_rate;
513 p_es->i_channels = p_fmt->audio.i_channels;
514 break;
515 case VLC_CODEC_MPGA:
516 p_es->i_payload_type = 14;
517 p_es->psz_ptname = "MPA";
518 break;
519 case VLC_CODEC_MPGV:
520 p_es->i_payload_type = 32;
521 p_es->psz_ptname = "MPV";
522 break;
523 case VLC_CODEC_A52:
524 p_es->psz_ptname = "ac3";
525 p_es->i_clock_rate = p_fmt->audio.i_rate;
526 break;
527 case VLC_CODEC_H263:
528 p_es->psz_ptname = "H263-1998";
529 break;
530 case VLC_CODEC_H264:
531 p_es->psz_ptname = "H264";
532 p_es->psz_fmtp = NULL;
533 /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
534 if( p_fmt->i_extra > 0 )
535 {
536 uint8_t *p_buffer = p_fmt->p_extra;
537 int i_buffer = p_fmt->i_extra;
538 char *p_64_sps = NULL;
539 char *p_64_pps = NULL;
540 char hexa[6+1];
541
542 while( i_buffer > 4 )
543 {
544 int i_offset = 0;
545 int i_size = 0;
546
547 while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
548 p_buffer[2] != 1 )
549 {
550 p_buffer++;
551 i_buffer--;
552 if( i_buffer == 0 ) break;
553 }
554
555 if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
556 {
557 /* No startcode found.. */
558 break;
559 }
560 p_buffer += 3;
561 i_buffer -= 3;
562
563 const int i_nal_type = p_buffer[0]&0x1f;
564
565 i_size = i_buffer;
566 for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
567 {
568 if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
569 {
570 /* we found another startcode */
571 while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
572 i_offset--;
573 i_size = i_offset;
574 break;
575 }
576 }
577
578 if( i_size == 0 )
579 {
580 /* No-info found in nal */
581 continue;
582 }
583
584 if( i_nal_type == 7 )
585 {
586 free( p_64_sps );
587 p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
588 /* XXX: nothing ensures that i_size >= 4 ?? */
589 sprintf_hexa( hexa, &p_buffer[1], 3 );
590 }
591 else if( i_nal_type == 8 )
592 {
593 free( p_64_pps );
594 p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
595 }
596 i_buffer -= i_size;
597 p_buffer += i_size;
598 }
599 /* */
600 if( p_64_sps && p_64_pps )
601 {
602 if( asprintf( &p_es->psz_fmtp,
603 "packetization-mode=1;profile-level-id=%s;"
604 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
605 p_64_pps ) < 0 )
606 {
607 free( p_64_sps );
608 free( p_64_pps );
609 free( psz_urlc );
610 free( p_es );
611 return VLC_ENOMEM;
612 }
613 }
614 free( p_64_sps );
615 free( p_64_pps );
616 }
617 if( !p_es->psz_fmtp )
618 p_es->psz_fmtp = strdup( "packetization-mode=1" );
619 break;
620 case VLC_CODEC_MP4V:
621 p_es->psz_ptname = "MP4V-ES";
622 if( p_fmt->i_extra > 0 )
623 {
624 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
625 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
626 if( asprintf( &p_es->psz_fmtp,
627 "profile-level-id=3; config=%s;", p_hexa ) == -1 )
628 p_es->psz_fmtp = NULL;
629 free( p_hexa );
630 }
631 break;
632 case VLC_CODEC_MP4A:
633 p_es->psz_ptname = "mpeg4-generic";
634 p_es->i_clock_rate = p_fmt->audio.i_rate;
635 if( p_fmt->i_extra > 0 )
636 {
637 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
638 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
639 if( asprintf( &p_es->psz_fmtp,
640 "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
641 "config=%s; SizeLength=13;IndexLength=3; "
642 "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
643 p_es->psz_fmtp = NULL;
644 free( p_hexa );
645 }
646 break;
647 case VLC_FOURCC( 'm', 'p', '2', 't' ):
648 p_media->psz_mux = "ts";
649 p_es->i_payload_type = 33;
650 p_es->psz_ptname = "MP2T";
651 break;
652 case VLC_FOURCC( 'm', 'p', '2', 'p' ):
653 p_media->psz_mux = "ps";
654 p_es->psz_ptname = "MP2P";
655 break;
656 case VLC_CODEC_AMR_NB:
657 p_es->psz_ptname = "AMR";
658 p_es->i_clock_rate = 8000;
659 if(p_fmt->audio.i_channels == 2 )
660 p_es->i_channels = 2;
661 p_es->psz_fmtp = strdup( "octet-align=1" );
662 break;
663 case VLC_CODEC_AMR_WB:
664 p_es->psz_ptname = "AMR-WB";
665 p_es->i_clock_rate = 16000;
666 if(p_fmt->audio.i_channels == 2 )
667 p_es->i_channels = 2;
668 p_es->psz_fmtp = strdup( "octet-align=1" );
669 break;
670
671 default:
672 msg_Err( p_vod, "cannot add this stream (unsupported "
673 "codec: %4.4s)", (char*)&p_fmt->i_codec );
674 free( psz_urlc );
675 free( p_es );
676 return VLC_EGENERIC;
677 }
678
679 p_es->p_rtsp_url =
680 httpd_UrlNew( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL );
681
682 if( !p_es->p_rtsp_url )
683 {
684 msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
685 free( psz_urlc );
686 free( p_es );
687 return VLC_EGENERIC;
688 }
689 free( psz_urlc );
690
691 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
692 RtspCallbackES, (void*)p_es );
693 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
694 RtspCallbackES, (void*)p_es );
695 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
696 RtspCallbackES, (void*)p_es );
697 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
698 RtspCallbackES, (void*)p_es );
699
700 es_format_Copy( &p_es->fmt, p_fmt );
701 p_es->p_vod = p_vod;
702 p_es->p_media = p_media;
703
704 vlc_mutex_lock( &p_media->lock );
705 TAB_APPEND( p_media->i_es, p_media->es, p_es );
706 vlc_mutex_unlock( &p_media->lock );
707
708 return VLC_SUCCESS;
709 }
710
711 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
712 {
713 media_es_t *p_es = NULL;
714
715 /* Find the ES */
716 for( int i = 0; i < p_media->i_es; i++ )
717 {
718 if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
719 p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
720 p_media->es[i]->fmt.i_id == p_fmt->i_id )
721 {
722 p_es = p_media->es[i];
723 }
724 }
725 if( !p_es ) return;
726
727 msg_Dbg( p_vod, " - Removing ES %4.4s", (char *)&p_fmt->i_codec );
728
729 vlc_mutex_lock( &p_media->lock );
730 TAB_REMOVE( p_media->i_es, p_media->es, p_es );
731 vlc_mutex_unlock( &p_media->lock );
732
733 free( p_es->psz_fmtp );
734
735 if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
736 es_format_Clean( &p_es->fmt );
737 free( p_es );
738 }
739
740 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session, int64_t i_arg,
741 double f_arg, const char *psz_arg )
742 {
743 rtsp_cmd_t cmd;
744 block_t *p_cmd;
745
746 memset( &cmd, 0, sizeof(cmd) );
747 cmd.i_type = i_type;
748 cmd.p_media = p_media;
749 if( p_media )
750 cmd.i_media_id = p_media->id;
751 if( psz_session )
752 cmd.psz_session = strdup(psz_session);
753 cmd.i_arg = i_arg;
754 cmd.f_arg = f_arg;
755 if( psz_arg )
756 cmd.psz_arg = strdup(psz_arg);
757
758 p_cmd = block_Alloc( sizeof(rtsp_cmd_t) );
759 memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
760
761 block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
762 }
763
764 static void* CommandThread( void *obj )
765 {
766 vod_t *p_vod = (vod_t*)obj;
767 vod_sys_t *p_sys = p_vod->p_sys;
768 int canc = vlc_savecancel ();
769
770 for( ;; )
771 {
772 block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
773 rtsp_cmd_t cmd;
774 vod_media_t *p_media = NULL;
775 int i;
776
777 if( !p_block_cmd )
778 break;
779
780 memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
781 block_Release( p_block_cmd );
782
783 if( cmd.i_type == RTSP_CMD_TYPE_NONE )
784 break;
785
786 if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
787 {
788 TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
789 goto next;
790 }
791
792 if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
793 {
794 MediaDel(p_vod, cmd.p_media);
795 goto next;
796 }
797
798 /* */
799 for( i = 0; i < p_sys->i_media; i++ )
800 {
801 if( p_sys->media[i]->id == cmd.i_media_id )
802 break;
803 }
804 if( i >= p_sys->i_media )
805 {
806 goto next;
807 }
808 p_media = p_sys->media[i];
809
810 switch( cmd.i_type )
811 {
812 case RTSP_CMD_TYPE_PLAY:
813 cmd.i_arg = -1;
814 vod_MediaControl( p_vod, p_media, cmd.psz_session,
815 VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
816 break;
817 case RTSP_CMD_TYPE_PAUSE:
818 cmd.i_arg = -1;
819 vod_MediaControl( p_vod, p_media, cmd.psz_session,
820 VOD_MEDIA_PAUSE, &cmd.i_arg );
821 break;
822
823 case RTSP_CMD_TYPE_STOP:
824 vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
825 break;
826
827 case RTSP_CMD_TYPE_SEEK:
828 vod_MediaControl( p_vod, p_media, cmd.psz_session,
829 VOD_MEDIA_SEEK, cmd.i_arg );
830 break;
831
832 case RTSP_CMD_TYPE_REWIND:
833 vod_MediaControl( p_vod, p_media, cmd.psz_session,
834 VOD_MEDIA_REWIND, cmd.f_arg );
835 break;
836
837 case RTSP_CMD_TYPE_FORWARD:
838 vod_MediaControl( p_vod, p_media, cmd.psz_session,
839 VOD_MEDIA_FORWARD, cmd.f_arg );
840 break;
841
842 default:
843 break;
844 }
845
846 next:
847 free( cmd.psz_session );
848 free( cmd.psz_arg );
849 }
850
851 vlc_restorecancel (canc);
852 return NULL;
853 }
854
855 /****************************************************************************
856 * RTSP server implementation
857 ****************************************************************************/
858 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
859 {
860 rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
861
862 if( !p_rtsp )
863 return NULL;
864 p_rtsp->es = 0;
865
866 p_rtsp->psz_session = psz_session;
867 TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
868
869 p_media->p_vod->p_sys->i_connections++;
870 msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
871 psz_session, p_media->p_vod->p_sys->i_throttle_users );
872
873 return p_rtsp;
874 }
875
876 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
877 {
878 for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
879 {
880 if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
881 return p_media->rtsp[i];
882 }
883
884 return NULL;
885 }
886
887 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
888 {
889 p_media->p_vod->p_sys->i_connections--;
890 msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
891 p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
892
893 while( p_rtsp->i_es )
894 {
895 p_rtsp->i_es--;
896 free( p_rtsp->es[p_rtsp->i_es] );
897 }
898 free( p_rtsp->es );
899
900 TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
901
902 free( p_rtsp->psz_session );
903 free( p_rtsp );
904 }
905
906
907 static int64_t ParseNPT (const char *str)
908 {
909 locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
910 locale_t oldloc = uselocale (loc);
911 unsigned hour, min;
912 float sec;
913
914 if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
915 sec += ((hour * 60) + min) * 60;
916 else
917 if (sscanf (str, "%f", &sec) != 1)
918 sec = 0.;
919
920 if (loc != (locale_t)0)
921 {
922 uselocale (oldloc);
923 freelocale (loc);
924 }
925 return sec * CLOCK_FREQ;
926 }
927
928
929 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
930 httpd_message_t *answer, const httpd_message_t *query )
931 {
932 vod_media_t *p_media = (vod_media_t*)p_args;
933 vod_t *p_vod = p_media->p_vod;
934 const char *psz_transport = NULL;
935 const char *psz_playnow = NULL; /* support option: x-playNow */
936 const char *psz_session = NULL;
937 const char *psz_cseq = NULL;
938 rtsp_client_t *p_rtsp;
939 int i_cseq = 0;
940
941 if( answer == NULL || query == NULL ) return VLC_SUCCESS;
942
943 msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
944
945 answer->i_proto = HTTPD_PROTO_RTSP;
946 answer->i_version = query->i_version;
947 answer->i_type = HTTPD_MSG_ANSWER;
948 answer->i_body = 0;
949 answer->p_body = NULL;
950
951 switch( query->i_type )
952 {
953 case HTTPD_MSG_SETUP:
954 {
955 psz_playnow = httpd_MsgGet( query, "x-playNow" );
956 psz_transport = httpd_MsgGet( query, "Transport" );
957 if( psz_transport == NULL )
958 {
959 answer->i_status = 400;
960 break;
961 }
962 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
963
964 if( strstr( psz_transport, "unicast" ) &&
965 strstr( psz_transport, "client_port=" ) )
966 {
967 rtsp_client_t *p_rtsp = NULL;
968 char ip[NI_MAXNUMERICHOST];
969 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
970 strlen("client_port=") );
971
972 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
973 strstr( psz_transport, "RAW/RAW/UDP" ) )
974 {
975 p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
976 p_media->b_raw = true;
977 }
978
979 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
980 {
981 answer->i_status = 500;
982 answer->i_body = 0;
983 answer->p_body = NULL;
984 break;
985 }
986
987 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
988 ip, i_port );
989
990 psz_session = httpd_MsgGet( query, "Session" );
991 if( !psz_session || !*psz_session )
992 {
993 char *psz_new;
994 if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
995 ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
996 {
997 answer->i_status = 503;
998 answer->i_body = 0;
999 answer->p_body = NULL;
1000 break;
1001 }
1002 #warning Should use secure randomness here! (spoofing risk)
1003 if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1004 return VLC_ENOMEM;
1005 psz_session = psz_new;
1006
1007 p_rtsp = RtspClientNew( p_media, psz_new );
1008 if( !p_rtsp )
1009 {
1010 answer->i_status = 454;
1011 answer->i_body = 0;
1012 answer->p_body = NULL;
1013 break;
1014 }
1015 }
1016 else
1017 {
1018 p_rtsp = RtspClientGet( p_media, psz_session );
1019 if( !p_rtsp )
1020 {
1021 answer->i_status = 454;
1022 answer->i_body = 0;
1023 answer->p_body = NULL;
1024 break;
1025 }
1026 }
1027
1028 answer->i_status = 200;
1029 answer->i_body = 0;
1030 answer->p_body = NULL;
1031
1032 if( p_media->b_raw )
1033 {
1034 p_rtsp->i_port_raw = i_port;
1035
1036 if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1037 {
1038 httpd_MsgAdd( answer, "Transport",
1039 "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1040 i_port, i_port + 1 );
1041 }
1042 else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1043 {
1044 httpd_MsgAdd( answer, "Transport",
1045 "RAW/RAW/UDP;unicast;client_port=%d-%d",
1046 i_port, i_port + 1 );
1047 }
1048 }
1049 else
1050 httpd_MsgAdd( answer, "Transport",
1051 "RTP/AVP/UDP;unicast;client_port=%d-%d",
1052 i_port, i_port + 1 );
1053 }
1054 else /* TODO strstr( psz_transport, "interleaved" ) ) */
1055 {
1056 answer->i_status = 461;
1057 answer->i_body = 0;
1058 answer->p_body = NULL;
1059 }
1060
1061 /* Intentional fall-through on x-playNow option in RTSP request */
1062 if( !psz_playnow )
1063 break;
1064 }
1065
1066 case HTTPD_MSG_PLAY:
1067 {
1068 char *psz_output, ip[NI_MAXNUMERICHOST];
1069 int i_port_audio = 0, i_port_video = 0;
1070
1071 /* for now only multicast so easy */
1072 if( !psz_playnow )
1073 {
1074 answer->i_status = 200;
1075 answer->i_body = 0;
1076 answer->p_body = NULL;
1077 }
1078
1079 if( !psz_session )
1080 psz_session = httpd_MsgGet( query, "Session" );
1081 msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1082
1083 p_rtsp = RtspClientGet( p_media, psz_session );
1084 if( !p_rtsp )
1085 {
1086 answer->i_status = 500;
1087 answer->i_body = 0;
1088 answer->p_body = NULL;
1089 break;
1090 }
1091
1092 if( p_rtsp->b_playing )
1093 {
1094 const char *psz_position = httpd_MsgGet( query, "Range" );
1095 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1096 if( psz_position )
1097 psz_position = strstr( psz_position, "npt=" );
1098 if( psz_position && !psz_scale )
1099 {
1100 int64_t i_time = ParseNPT (psz_position + 4);
1101 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1102 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1103 psz_session, i_time, 0.0, NULL );
1104 }
1105 else if( psz_scale )
1106 {
1107 double f_scale = 0.0;
1108 char *end;
1109
1110 f_scale = us_strtod( psz_scale, &end );
1111 if( end > psz_scale )
1112 {
1113 f_scale = (f_scale * 30.0);
1114 if( psz_scale[0] == '-' ) /* rewind */
1115 {
1116 msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1117 CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1118 psz_session, 0, f_scale, NULL );
1119 }
1120 else if(psz_scale[0] != '1' ) /* fast-forward */
1121 {
1122 msg_Dbg( p_vod, "fastforward request: %s",
1123 psz_scale );
1124 CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1125 psz_session, 0, f_scale, NULL );
1126 }
1127 }
1128 }
1129 /* unpause, in case it's paused */
1130 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1131 0, 0.0, "" );
1132 break;
1133 }
1134
1135 if( httpd_ClientIP( cl, ip, NULL ) == NULL ) break;
1136
1137 p_rtsp->b_playing = true;
1138
1139 /* FIXME for != 1 video and 1 audio */
1140 for( int i = 0; i < p_rtsp->i_es; i++ )
1141 {
1142 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1143 i_port_audio = p_rtsp->es[i]->i_port;
1144 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1145 i_port_video = p_rtsp->es[i]->i_port;
1146 }
1147
1148 if( p_media->psz_mux )
1149 {
1150 if( p_media->b_raw )
1151 {
1152 if( asprintf( &psz_output,
1153 "std{access=udp,dst=%s:%i,mux=%s}",
1154 ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
1155 return VLC_ENOMEM;
1156 }
1157 else
1158 {
1159 if( asprintf( &psz_output,
1160 "rtp{dst=%s,port=%i,mux=%s}",
1161 ip, i_port_video, p_media->psz_mux ) < 0 )
1162 return VLC_ENOMEM;
1163 }
1164 }
1165 else
1166 {
1167 if( asprintf( &psz_output,
1168 "rtp{dst=%s,port-video=%i,port-audio=%i}",
1169 ip, i_port_video, i_port_audio ) < 0 )
1170 return VLC_ENOMEM;
1171 }
1172
1173 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1174 0, 0.0, psz_output );
1175 free( psz_output );
1176 break;
1177 }
1178
1179 case HTTPD_MSG_DESCRIBE:
1180 {
1181 char *psz_sdp =
1182 SDPGenerate( p_media, cl );
1183
1184 if( psz_sdp != NULL )
1185 {
1186 answer->i_status = 200;
1187 httpd_MsgAdd( answer, "Content-type", "%s",
1188 "application/sdp" );
1189
1190 answer->p_body = (uint8_t *)psz_sdp;
1191 answer->i_body = strlen( psz_sdp );
1192 }
1193 else
1194 {
1195 answer->i_status = 500;
1196 answer->p_body = NULL;
1197 answer->i_body = 0;
1198 }
1199 break;
1200 }
1201
1202 case HTTPD_MSG_PAUSE:
1203 psz_session = httpd_MsgGet( query, "Session" );
1204 msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1205
1206 p_rtsp = RtspClientGet( p_media, psz_session );
1207 if( !p_rtsp ) break;
1208
1209 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1210 0, 0.0, NULL );
1211
1212 answer->i_status = 200;
1213 answer->i_body = 0;
1214 answer->p_body = NULL;
1215 break;
1216
1217 case HTTPD_MSG_TEARDOWN:
1218 /* for now only multicast so easy again */
1219 answer->i_status = 200;
1220 answer->i_body = 0;
1221 answer->p_body = NULL;
1222
1223 psz_session = httpd_MsgGet( query, "Session" );
1224 msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1225
1226 p_rtsp = RtspClientGet( p_media, psz_session );
1227 if( !p_rtsp ) break;
1228
1229 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1230 0, 0.0, NULL );
1231 RtspClientDel( p_media, p_rtsp );
1232 break;
1233
1234 case HTTPD_MSG_GETPARAMETER:
1235 answer->i_status = 200;
1236 answer->i_body = 0;
1237 answer->p_body = NULL;
1238 break;
1239
1240 default:
1241 return VLC_EGENERIC;
1242 }
1243
1244 httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1245 httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1246 psz_cseq = httpd_MsgGet( query, "Cseq" );
1247 psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1248 httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1249 httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1250
1251 if( psz_session )
1252 {
1253 if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1254 httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1255 p_media->p_vod->p_sys->i_session_timeout );
1256 else
1257 httpd_MsgAdd( answer, "Session", "%s", psz_session );
1258 }
1259
1260 return VLC_SUCCESS;
1261 }
1262
1263 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1264 httpd_message_t *answer,
1265 const httpd_message_t *query )
1266 {
1267 media_es_t *p_es = (media_es_t*)p_args;
1268 vod_media_t *p_media = p_es->p_media;
1269 vod_t *p_vod = p_media->p_vod;
1270 rtsp_client_t *p_rtsp = NULL;
1271 const char *psz_transport = NULL;
1272 const char *psz_playnow = NULL; /* support option: x-playNow */
1273 const char *psz_session = NULL;
1274 const char *psz_position = NULL;
1275 const char *psz_cseq = NULL;
1276 int i_cseq = 0;
1277
1278 if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1279
1280 msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1281
1282 answer->i_proto = HTTPD_PROTO_RTSP;
1283 answer->i_version = query->i_version;
1284 answer->i_type = HTTPD_MSG_ANSWER;
1285 answer->i_body = 0;
1286 answer->p_body = NULL;
1287
1288 switch( query->i_type )
1289 {
1290 case HTTPD_MSG_SETUP:
1291 psz_playnow = httpd_MsgGet( query, "x-playNow" );
1292 psz_transport = httpd_MsgGet( query, "Transport" );
1293
1294 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1295
1296 if( strstr( psz_transport, "unicast" ) &&
1297 strstr( psz_transport, "client_port=" ) )
1298 {
1299 rtsp_client_t *p_rtsp = NULL;
1300 rtsp_client_es_t *p_rtsp_es = NULL;
1301 char ip[NI_MAXNUMERICHOST];
1302 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1303 strlen("client_port=") );
1304
1305 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
1306 {
1307 answer->i_status = 500;
1308 answer->i_body = 0;
1309 answer->p_body = NULL;
1310 break;
1311 }
1312
1313 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1314 ip, i_port );
1315
1316 psz_session = httpd_MsgGet( query, "Session" );
1317 if( !psz_session || !*psz_session )
1318 {
1319 char *psz_new;
1320 if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1321 ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1322 {
1323 answer->i_status = 503;
1324 answer->i_body = 0;
1325 answer->p_body = NULL;
1326 break;
1327 }
1328 #warning Session ID should be securely random (spoofing risk)
1329 if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1330 return VLC_ENOMEM;
1331 psz_session = psz_new;
1332
1333 p_rtsp = RtspClientNew( p_media, psz_new );
1334 if( !p_rtsp )
1335 {
1336 answer->i_status = 454;
1337 answer->i_body = 0;
1338 answer->p_body = NULL;
1339 break;
1340 }
1341 }
1342 else
1343 {
1344 p_rtsp = RtspClientGet( p_media, psz_session );
1345 if( !p_rtsp )
1346 {
1347 answer->i_status = 454;
1348 answer->i_body = 0;
1349 answer->p_body = NULL;
1350 break;
1351 }
1352 }
1353
1354 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1355 if( !p_rtsp_es )
1356 {
1357 answer->i_status = 500;
1358 answer->i_body = 0;
1359 answer->p_body = NULL;
1360 break;
1361 }
1362 p_rtsp_es->i_port = i_port;
1363 p_rtsp_es->p_media_es = p_es;
1364 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1365
1366 answer->i_status = 200;
1367 answer->i_body = 0;
1368 answer->p_body = NULL;
1369
1370 if( p_media->b_raw )
1371 {
1372 if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1373 {
1374 httpd_MsgAdd( answer, "Transport",
1375 "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1376 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1377 }
1378 else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1379 {
1380 httpd_MsgAdd( answer, "Transport",
1381 "RAW/RAW/UDP;unicast;client_port=%d-%d",
1382 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1383 }
1384 }
1385 else
1386 {
1387 httpd_MsgAdd( answer, "Transport",
1388 "RTP/AVP/UDP;unicast;client_port=%d-%d",
1389 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1390 }
1391 }
1392 else /* TODO strstr( psz_transport, "interleaved" ) ) */
1393 {
1394 answer->i_status = 461;
1395 answer->i_body = 0;
1396 answer->p_body = NULL;
1397 }
1398
1399 /* Intentional fall-through on x-playNow option in RTSP request */
1400 if( !psz_playnow )
1401 break;
1402
1403 case HTTPD_MSG_PLAY:
1404 /* This is kind of a kludge. Should we only support Aggregate
1405 * Operations ? */
1406 psz_session = httpd_MsgGet( query, "Session" );
1407 msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1408
1409 p_rtsp = RtspClientGet( p_media, psz_session );
1410
1411 psz_position = httpd_MsgGet( query, "Range" );
1412 if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1413 if( psz_position )
1414 {
1415 int64_t i_time = ParseNPT (psz_position + 4);
1416 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1417 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1418 psz_session, i_time, 0.0, NULL );
1419 }
1420
1421 if( !psz_playnow )
1422 {
1423 answer->i_status = 200;
1424 answer->i_body = 0;
1425 answer->p_body = NULL;
1426 }
1427 break;
1428
1429 case HTTPD_MSG_TEARDOWN:
1430 answer->i_status = 200;
1431 answer->i_body = 0;
1432 answer->p_body = NULL;
1433
1434 psz_session = httpd_MsgGet( query, "Session" );
1435 msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1436
1437 p_rtsp = RtspClientGet( p_media, psz_session );
1438 if( !p_rtsp ) break;
1439
1440 for( int i = 0; i < p_rtsp->i_es; i++ )
1441 {
1442 rtsp_client_es_t *es = p_rtsp->es[i];
1443 if( es->p_media_es == p_es )
1444 {
1445 TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, es );
1446 break;
1447 }
1448 }
1449
1450 if( !p_rtsp->i_es )
1451 {
1452 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1453 0, 0.0, NULL );
1454 RtspClientDel( p_media, p_rtsp );
1455 }
1456 break;
1457
1458 case HTTPD_MSG_PAUSE:
1459 /* This is kind of a kludge. Should we only support Aggregate
1460 * Operations ? */
1461 psz_session = httpd_MsgGet( query, "Session" );
1462 msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1463
1464 p_rtsp = RtspClientGet( p_media, psz_session );
1465 if( !p_rtsp ) break;
1466
1467 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1468 0, 0.0, NULL );
1469
1470 answer->i_status = 200;
1471 answer->i_body = 0;
1472 answer->p_body = NULL;
1473 break;
1474
1475 default:
1476 return VLC_EGENERIC;
1477 break;
1478 }
1479
1480 httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1481 httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1482 psz_cseq = httpd_MsgGet( query, "Cseq" );
1483 if (psz_cseq)
1484 i_cseq = atoi( psz_cseq );
1485 else
1486 i_cseq = 0;
1487 httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1488 httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1489
1490 if( psz_session )
1491 httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1492
1493 return VLC_SUCCESS;
1494 }
1495
1496 /*****************************************************************************
1497 * SDPGenerate: TODO
1498 * FIXME: need to be moved to a common place ?
1499 *****************************************************************************/
1500 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1501 {
1502 char *psz_sdp, ip[NI_MAXNUMERICHOST];
1503 const char *psz_control;
1504 int port;
1505
1506 if( httpd_ServerIP( cl, ip, &port ) == NULL )
1507 return NULL;
1508
1509 bool ipv6 = ( strchr( ip, ':' ) != NULL );
1510
1511 psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1512 : p_media->psz_rtsp_control_v4;
1513
1514 /* Dummy destination address for RTSP */
1515 struct sockaddr_storage dst;
1516 socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1517 : sizeof( struct sockaddr_in );
1518 memset (&dst, 0, dstlen);
1519 dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1520 #ifdef HAVE_SA_LEN
1521 dst.ss_len = dstlen;
1522 #endif
1523
1524 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1525 NULL, 0, (struct sockaddr *)&dst, dstlen );
1526 if( psz_sdp == NULL )
1527 return NULL;
1528
1529 if( p_media->i_length > 0 )
1530 {
1531 lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1532 sdp_AddAttribute( &psz_sdp, "range","npt=0-%lld.%03u", d.quot,
1533 (unsigned)d.rem );
1534 }
1535
1536 for( int i = 0; i < p_media->i_es; i++ )
1537 {
1538 media_es_t *p_es = p_media->es[i];
1539 const char *mime_major; /* major MIME type */
1540
1541 switch( p_es->fmt.i_cat )
1542 {
1543 case VIDEO_ES:
1544 mime_major = "video";
1545 break;
1546 case AUDIO_ES:
1547 mime_major = "audio";
1548 break;
1549 case SPU_ES:
1550 mime_major = "text";
1551 break;
1552 default:
1553 continue;
1554 }
1555
1556 sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1557 p_es->i_payload_type, false, 0,
1558 p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1559 p_es->psz_fmtp );
1560
1561 sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, port, i );
1562 }
1563
1564 return psz_sdp;
1565 }
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