rtmp: fix a memory leak (we must release the fifo)
[vlc.git] / modules / access / rtmp / access.c
1 /*****************************************************************************
2  * access.c: RTMP input.
3  *****************************************************************************
4  * Copyright (C) URJC - LADyR - Luis Lopez Fernandez
5  *
6  * Author: Miguel Angel Cabrera Moya
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21  *****************************************************************************/
22
23 /*****************************************************************************
24  * Preamble
25  *****************************************************************************/
26 #ifdef HAVE_CONFIG_H
27 # include "config.h"
28 #endif
29
30 #include <vlc_common.h>
31 #include <vlc_plugin.h>
32 #include <vlc_access.h>
33
34 #include <vlc_network.h> /* DOWN: #include <network.h> */
35 #include <vlc_url.h>
36 #include <vlc_block.h>
37
38 #include "rtmp_amf_flv.h"
39
40 /*****************************************************************************
41  * Module descriptor
42  *****************************************************************************/
43 #define CACHING_TEXT N_("Caching value in ms")
44 #define CACHING_LONGTEXT N_( \
45     "Caching value for RTMP streams. This " \
46     "value should be set in milliseconds." )
47
48 static int  Open ( vlc_object_t * );
49 static void Close( vlc_object_t * );
50
51 vlc_module_begin ()
52     set_description( N_("RTMP input") )
53     set_shortname( N_("RTMP") )
54     set_category( CAT_INPUT )
55     set_subcategory( SUBCAT_INPUT_ACCESS )
56
57     add_integer( "rtmp-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
58                  CACHING_LONGTEXT, true )
59
60     set_capability( "access", 0 )
61     set_callbacks( Open, Close )
62     add_shortcut( "rtmp" )
63 vlc_module_end ()
64
65
66 /*****************************************************************************
67  * Local prototypes
68  *****************************************************************************/
69 static ssize_t  Read( access_t *, uint8_t *, size_t );
70 static int Seek( access_t *, int64_t );
71 static int Control( access_t *, int, va_list );
72
73 static void* ThreadControl( vlc_object_t * );
74
75 /*****************************************************************************
76  * Open: open the rtmp connection
77  *****************************************************************************/
78 static int Open( vlc_object_t *p_this )
79 {
80     access_t *p_access = (access_t *) p_this;
81     access_sys_t *p_sys;
82     char *psz, *p; 
83     int length_path, length_media_name;
84     int i;
85
86     STANDARD_READ_ACCESS_INIT
87
88     p_sys->p_thread =
89         vlc_object_create( p_access, sizeof( rtmp_control_thread_t ) );
90     if( !p_sys->p_thread )
91         return VLC_ENOMEM;
92     vlc_object_attach( p_sys->p_thread, p_access );
93
94     /* Parse URI - remove spaces */
95     p = psz = strdup( p_access->psz_path );
96     while( (p = strchr( p, ' ' )) != NULL )
97         *p = '+';
98     vlc_UrlParse( &p_sys->p_thread->url, psz, 0 );
99     free( psz );
100
101     if( p_sys->p_thread->url.psz_host == NULL
102         || *p_sys->p_thread->url.psz_host == '\0' )
103     {
104         msg_Warn( p_access, "invalid host" );
105         goto error;
106     }
107
108     if( p_sys->p_thread->url.i_port <= 0 )
109         p_sys->p_thread->url.i_port = 1935;
110
111     if( p_sys->p_thread->url.psz_path == NULL )
112     {
113         msg_Warn( p_access, "invalid path" );
114         goto error;
115     }
116
117     length_path = strlen( p_sys->p_thread->url.psz_path );
118     char* psz_tmp = strrchr( p_sys->p_thread->url.psz_path, '/' );
119     if( !psz_tmp )
120         goto error;
121     length_media_name = strlen( psz_tmp ) - 1;
122
123     p_sys->p_thread->psz_application = strndup( p_sys->p_thread->url.psz_path + 1, length_path - length_media_name - 2 );
124     p_sys->p_thread->psz_media = strdup( p_sys->p_thread->url.psz_path + ( length_path - length_media_name ) );
125
126     msg_Dbg( p_access, "rtmp: host='%s' port=%d path='%s'",
127              p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port, p_sys->p_thread->url.psz_path );
128
129     if( p_sys->p_thread->url.psz_username && *p_sys->p_thread->url.psz_username )
130     {
131         msg_Dbg( p_access, "      user='%s'", p_sys->p_thread->url.psz_username );
132     }
133
134     /* Initialize thread variables */
135     p_sys->p_thread->b_die = 0;
136     p_sys->p_thread->b_error= 0;
137     p_sys->p_thread->p_fifo_input = block_FifoNew();
138     p_sys->p_thread->p_empty_blocks = block_FifoNew();
139     p_sys->p_thread->has_audio = 0;
140     p_sys->p_thread->has_video = 0;
141     p_sys->p_thread->metadata_received = 0;
142     p_sys->p_thread->first_media_packet = 1;
143     p_sys->p_thread->flv_tag_previous_tag_size = 0x00000000; /* FLV_TAG_FIRST_PREVIOUS_TAG_SIZE */
144     p_sys->p_thread->chunk_size_recv = 128; /* RTMP_DEFAULT_CHUNK_SIZE */
145     p_sys->p_thread->chunk_size_send = 128; /* RTMP_DEFAULT_CHUNK_SIZE */
146     for(i = 0; i < 64; i++)
147     {
148         memset( &p_sys->p_thread->rtmp_headers_recv[i], 0, sizeof( rtmp_packet_t ) );
149         p_sys->p_thread->rtmp_headers_send[i].length_header = -1;
150         p_sys->p_thread->rtmp_headers_send[i].stream_index = -1;
151         p_sys->p_thread->rtmp_headers_send[i].timestamp = -1;
152         p_sys->p_thread->rtmp_headers_send[i].timestamp_relative = -1;
153         p_sys->p_thread->rtmp_headers_send[i].length_encoded = -1;
154         p_sys->p_thread->rtmp_headers_send[i].length_body = -1;
155         p_sys->p_thread->rtmp_headers_send[i].content_type = -1;
156         p_sys->p_thread->rtmp_headers_send[i].src_dst = -1;
157         p_sys->p_thread->rtmp_headers_send[i].body = NULL;
158     }
159
160     p_sys->p_thread->p_base_object = p_this;
161
162     vlc_cond_init( &p_sys->p_thread->wait );
163
164     vlc_mutex_init( &p_sys->p_thread->lock );
165
166     p_sys->p_thread->result_connect = 1;
167     p_sys->p_thread->result_play = 1;
168     p_sys->p_thread->result_stop = 0;
169
170     /* Open connection */
171     p_sys->p_thread->fd = net_ConnectTCP( p_access, p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port );
172     if( p_sys->p_thread->fd == -1 )
173     {
174         int *p_fd_listen;
175
176         msg_Warn( p_access, "cannot connect to %s:%d", p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port );
177         msg_Dbg( p_access, "switching to passive mode" );
178
179         p_sys->active = 0;
180
181         p_fd_listen = net_ListenTCP( p_access, p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port );
182         if( p_fd_listen == NULL )
183         {
184             msg_Err( p_access, "cannot listen to %s port %i", p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port );
185             goto error2;
186         }
187
188         p_sys->p_thread->fd = net_Accept( p_access, p_fd_listen, -1 );
189
190         net_ListenClose( p_fd_listen );
191
192         if( rtmp_handshake_passive( p_this, p_sys->p_thread->fd ) < 0 )
193         {
194             msg_Err( p_access, "handshake passive failed");
195             goto error2;
196         }
197
198         p_sys->p_thread->result_publish = 1;
199     }
200     else
201     {
202         p_sys->active = 1;
203
204         if( rtmp_handshake_active( p_this, p_sys->p_thread->fd ) < 0 )
205         {
206             msg_Err( p_access, "handshake active failed");
207             goto error2;
208         }
209
210         p_sys->p_thread->result_publish = 0;
211     }
212
213     if( vlc_thread_create( p_sys->p_thread, "rtmp control thread", ThreadControl,
214                            VLC_THREAD_PRIORITY_INPUT ) )
215     {
216         msg_Err( p_access, "cannot spawn rtmp control thread" );
217         goto error2;
218     }
219
220     if( p_sys->active )
221     {
222         if( rtmp_connect_active( p_sys->p_thread ) < 0 )
223         {
224             msg_Err( p_access, "connect active failed");
225             goto error2;
226         }
227     }
228
229     /* Set vars for reading from fifo */
230     p_access->p_sys->flv_packet = NULL;
231     p_access->p_sys->read_packet = 1;
232
233     /* Update default_pts to a suitable value for rtmp access */
234     var_Create( p_access, "rtmp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
235
236     return VLC_SUCCESS;
237
238 error2:
239     vlc_cond_destroy( &p_sys->p_thread->wait );
240     vlc_mutex_destroy( &p_sys->p_thread->lock );
241
242     block_FifoRelease( p_sys->p_thread->p_fifo_input );
243     block_FifoRelease( p_sys->p_thread->p_empty_blocks );
244
245     free( p_sys->p_thread->psz_application );
246     free( p_sys->p_thread->psz_media );
247
248     net_Close( p_sys->p_thread->fd );
249 error:
250     vlc_UrlClean( &p_sys->p_thread->url );
251
252     vlc_object_detach( p_sys->p_thread );
253     vlc_object_release( p_sys->p_thread );
254
255     free( p_sys );
256
257     return VLC_EGENERIC;
258 }
259
260 /*****************************************************************************
261  * Close: close the rtmp connection
262  *****************************************************************************/
263 static void Close( vlc_object_t * p_this )
264 {
265     access_t     *p_access = (access_t *) p_this;
266     access_sys_t *p_sys = p_access->p_sys;
267     int i;
268
269 /*    p_sys->p_thread->b_die = true;*/
270     vlc_object_kill( p_sys->p_thread );
271     block_FifoWake( p_sys->p_thread->p_fifo_input );
272
273     vlc_thread_join( p_sys->p_thread );
274
275     vlc_cond_destroy( &p_sys->p_thread->wait );
276     vlc_mutex_destroy( &p_sys->p_thread->lock );
277
278     block_FifoRelease( p_sys->p_thread->p_fifo_input );
279     block_FifoRelease( p_sys->p_thread->p_empty_blocks );
280
281     for( i = 0; i < 64; i++ ) /* RTMP_HEADER_STREAM_INDEX_MASK */
282     {
283         if( p_sys->p_thread->rtmp_headers_recv[i].body != NULL )
284         {
285             free( p_sys->p_thread->rtmp_headers_recv[i].body->body );
286             free( p_sys->p_thread->rtmp_headers_recv[i].body );
287         }
288     }
289
290     net_Close( p_sys->p_thread->fd );
291
292     var_Destroy( p_access, "rtmp-caching" );
293
294     vlc_UrlClean( &p_sys->p_thread->url );
295     free( p_sys->p_thread->psz_application );
296     free( p_sys->p_thread->psz_media );
297
298     vlc_object_detach( p_sys->p_thread );
299     vlc_object_release( p_sys->p_thread );
300     free( p_sys );
301 }
302
303 /*****************************************************************************
304  * Read: standard read on a file descriptor.
305  *****************************************************************************/
306 static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
307 {
308     access_sys_t *p_sys = p_access->p_sys;
309     rtmp_packet_t *rtmp_packet;
310     uint8_t *tmp_buffer;
311     ssize_t i_ret;
312     size_t i_len_tmp;
313
314     i_len_tmp = 0;
315
316     while( i_len_tmp < i_len )
317     {
318         if( p_sys->p_thread->result_stop || p_access->info.b_eof || !vlc_object_alive (p_access) )
319         {
320             p_access->info.b_eof = true;
321             return 0;
322         }
323
324         if( p_sys->read_packet )
325         {
326             if( !p_sys->p_thread->metadata_received )
327             {
328                 /* Wait until enough data is received for extracting metadata */
329                 if( block_FifoCount( p_sys->p_thread->p_fifo_input ) < 10 )
330                 {
331                     msleep(100000);
332                     continue;
333                 }
334
335                 p_sys->flv_packet = flv_get_metadata( p_access );
336
337                 p_sys->p_thread->metadata_received = 1;
338             }
339             else
340             {
341                 p_sys->flv_packet = block_FifoGet( p_sys->p_thread->p_fifo_input );
342                 if( p_sys->flv_packet == NULL )
343                     continue; /* Forced wake-up */
344             }
345
346             if( p_sys->p_thread->first_media_packet )
347             {
348                 p_sys->flv_packet = flv_insert_header( p_access, p_sys->flv_packet );
349
350                 p_sys->p_thread->first_media_packet = 0;
351             }
352         }
353         if( i_len - i_len_tmp >= p_sys->flv_packet->i_buffer )
354         {
355             p_sys->read_packet = 1;
356
357             memcpy( p_buffer + i_len_tmp, p_sys->flv_packet->p_buffer, p_sys->flv_packet->i_buffer );
358             block_FifoPut( p_sys->p_thread->p_empty_blocks, p_sys->flv_packet );
359
360             i_len_tmp += p_sys->flv_packet->i_buffer;
361         }
362         else
363         {
364             p_sys->read_packet = 0;
365
366             memcpy( p_buffer + i_len_tmp, p_sys->flv_packet->p_buffer, i_len - i_len_tmp);
367             p_sys->flv_packet->i_buffer -= i_len - i_len_tmp;
368             memmove( p_sys->flv_packet->p_buffer, p_sys->flv_packet->p_buffer + i_len - i_len_tmp, p_sys->flv_packet->i_buffer );
369
370             i_len_tmp += i_len - i_len_tmp;
371         }
372     }
373     if( i_len_tmp > 0 )
374     {
375         if( p_sys->p_thread->result_publish )
376         {
377             /* Send publish onStatus event only once */
378             p_sys->p_thread->result_publish = 0;
379
380             rtmp_packet = rtmp_build_publish_start( p_sys->p_thread );
381
382             tmp_buffer = rtmp_encode_packet( p_sys->p_thread, rtmp_packet );
383
384             i_ret = net_Write( p_sys->p_thread, p_sys->p_thread->fd, NULL, tmp_buffer, rtmp_packet->length_encoded );
385             if( i_ret != rtmp_packet->length_encoded )
386             {
387                 free( rtmp_packet->body->body );
388                 free( rtmp_packet->body );
389                 free( rtmp_packet );
390                 free( tmp_buffer );
391                 msg_Err( p_access, "failed send publish start" );
392                 return -1;
393             }
394             free( rtmp_packet->body->body );
395             free( rtmp_packet->body );
396             free( rtmp_packet );
397             free( tmp_buffer );
398         }
399
400         p_access->info.i_pos += i_len_tmp;
401
402         rtmp_packet = rtmp_build_bytes_read( p_sys->p_thread, p_access->info.i_pos );
403
404         tmp_buffer = rtmp_encode_packet( p_sys->p_thread, rtmp_packet );
405  
406         i_ret = net_Write( p_sys->p_thread, p_sys->p_thread->fd, NULL, tmp_buffer, rtmp_packet->length_encoded );
407         if( i_ret != rtmp_packet->length_encoded )
408         {
409             free( rtmp_packet->body->body );
410             free( rtmp_packet->body );
411             free( rtmp_packet );
412             free( tmp_buffer );
413             msg_Err( p_access, "failed send bytes read" );
414             return -1;
415         }
416         free( rtmp_packet->body->body );
417         free( rtmp_packet->body );
418         free( rtmp_packet );
419         free( tmp_buffer );
420     }
421
422     return i_len_tmp;
423 }
424
425 /*****************************************************************************
426  * Seek: seek to a specific location in a file
427  *****************************************************************************/
428 static int Seek( access_t *p_access, int64_t i_pos )
429 {
430     VLC_UNUSED( p_access );
431     VLC_UNUSED( i_pos );
432 /*msg_Warn ( p_access, "Seek to %lld", i_pos);
433     switch( rtmp_seek( p_access, i_pos ) )
434     {
435         case -1:
436             return VLC_EGENERIC;
437         case 0:
438             break;
439         default:
440             msg_Err( p_access, "You should not be here" );
441             abort();
442     }
443 */
444     return VLC_EGENERIC;
445 }
446
447 /*****************************************************************************
448  * Control:
449  *****************************************************************************/
450 static int Control( access_t *p_access, int i_query, va_list args )
451 {
452     bool    *pb_bool;
453     int64_t *pi_64;
454
455     switch( i_query )
456     {
457         /* */
458         case ACCESS_CAN_SEEK:
459         case ACCESS_CAN_FASTSEEK:
460             pb_bool = (bool*) va_arg( args, bool* );
461             *pb_bool = false; /* TODO */
462             break;
463
464         case ACCESS_CAN_PAUSE:
465             pb_bool = (bool*) va_arg( args, bool* );
466             *pb_bool = false; /* TODO */
467             break;
468
469         case ACCESS_CAN_CONTROL_PACE:
470             pb_bool = (bool*) va_arg( args, bool* );
471             *pb_bool = true;
472             break;
473
474         /* */
475         case ACCESS_GET_PTS_DELAY:
476             pi_64 = (int64_t*) va_arg( args, int64_t * );
477             *pi_64 = var_GetInteger( p_access, "rtmp-caching" ) * INT64_C(1000);
478             break;
479
480         /* */
481         case ACCESS_SET_PAUSE_STATE:
482             /* Nothing to do */
483             break;
484
485         case ACCESS_GET_TITLE_INFO:
486         case ACCESS_SET_TITLE:
487         case ACCESS_SET_SEEKPOINT:
488         case ACCESS_SET_PRIVATE_ID_STATE:
489         case ACCESS_GET_META:
490         case ACCESS_GET_CONTENT_TYPE: /* DOWN: comment this line */
491             return VLC_EGENERIC;
492
493         default:
494             msg_Warn( p_access, "unimplemented query in control" );
495             return VLC_EGENERIC;
496     }
497
498     return VLC_SUCCESS;
499 }
500
501 /*****************************************************************************
502  * ThreadControl: manage control messages and pipe media to Read
503  *****************************************************************************/
504 static void* ThreadControl( vlc_object_t *p_this )
505 {
506     rtmp_control_thread_t *p_thread = (rtmp_control_thread_t *) p_this;
507     rtmp_packet_t *rtmp_packet;
508     int canc = vlc_savecancel ();
509
510     rtmp_init_handler( p_thread->rtmp_handler );
511
512     while( vlc_object_alive (p_thread) )
513     {
514         rtmp_packet = rtmp_read_net_packet( p_thread );
515         if( rtmp_packet != NULL )
516         {
517             if( rtmp_packet->content_type < 0x01 /* RTMP_CONTENT_TYPE_CHUNK_SIZE */
518                 || rtmp_packet->content_type > 0x14 ) /* RTMP_CONTENT_TYPE_INVOKE */
519             {
520                 free( rtmp_packet->body->body );
521                 free( rtmp_packet->body );
522                 free( rtmp_packet );
523
524                 msg_Warn( p_thread, "unknown content type received" );
525             }
526             else
527                 p_thread->rtmp_handler[rtmp_packet->content_type]( p_thread, rtmp_packet );
528         }
529         else
530         {
531             /* Sometimes server close connection too soon */
532             if( p_thread->result_connect )
533             {
534                 vlc_mutex_lock( &p_thread->lock );
535                 vlc_cond_signal( &p_thread->wait );
536                 vlc_mutex_unlock( &p_thread->lock );
537             }
538
539             p_thread->b_die = 1;
540             ((access_t *) p_thread->p_base_object)->info.b_eof = true;
541
542             block_FifoWake( p_thread->p_fifo_input );
543         }
544     }
545     vlc_restorecancel (canc);
546     return NULL;
547 }