git.sesse.net Git - vlc/blob - modules/misc/rtsp.c

   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 #define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
  34 #include <vlc_common.h>
  35 #include <vlc_plugin.h>
  36 #include <vlc_input.h>
  37 #include <vlc_sout.h>
  38 #include <vlc_block.h>
  39
  40 #include <vlc_httpd.h>
  41 #include <vlc_vod.h>
  42 #include <vlc_url.h>
  43 #include <vlc_network.h>
  44 #include <vlc_charset.h>
  45 #include <vlc_strings.h>
  46 #include <vlc_rand.h>
  47
  48 #ifndef _WIN32
  49 # include <locale.h>
  50 #endif
  51
  52 #ifdef HAVE_XLOCALE_H
  53 # include <xlocale.h>
  54 #endif
  55
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59 static int  Open ( vlc_object_t * );
  60 static void Close( vlc_object_t * );
  61
  62 #define THROTTLE_TEXT N_( "Maximum number of connections" )
  63 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  64     "that can connect to the RTSP VOD. 0 means no limit."  )
  65
  66 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  67
  68 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  69     "session string" )
  70 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  71     "to the RTSP session ID string. Setting it to a negative number removes " \
  72     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  73     "those made by HansunTech) which get confused by it. The default is 5." )
  74
  75 vlc_module_begin ()
  76     set_shortname( N_("RTSP VoD" ) )
  77     set_description( N_("Legacy RTSP VoD server") )
  78     set_category( CAT_SOUT )
  79     set_subcategory( SUBCAT_SOUT_VOD )
  80     set_capability( "vod server", 1 )
  81     set_callbacks( Open, Close )
  82     add_shortcut( "rtsp" )
  83     add_string( "rtsp-raw-mux", "ts", RAWMUX_TEXT,
  84                 RAWMUX_TEXT, true )
  85     add_integer( "rtsp-throttle-users", 0, THROTTLE_TEXT,
  86                  THROTTLE_LONGTEXT, true )
  87     add_integer( "rtsp-session-timeout", 5, SESSION_TIMEOUT_TEXT,
  88                  SESSION_TIMEOUT_LONGTEXT, true )
  89 vlc_module_end ()
  90
  91 /*****************************************************************************
  92  * Exported prototypes
  93  *****************************************************************************/
  94
  95 typedef struct media_es_t media_es_t;
  96
  97 typedef struct
  98 {
  99     media_es_t *p_media_es;
 100     int i_port;
 101
 102 } rtsp_client_es_t;
 103
 104 typedef struct
 105 {
 106     char *psz_session;
 107
 108     bool b_playing; /* is it in "play" state */
 109     int i_port_raw;
 110
 111     int i_es;
 112     rtsp_client_es_t **es;
 113
 114 } rtsp_client_t;
 115
 116 struct media_es_t
 117 {
 118     /* VoD server */
 119     vod_t *p_vod;
 120
 121     /* RTSP server */
 122     httpd_url_t *p_rtsp_url;
 123
 124     vod_media_t *p_media;
 125
 126     es_format_t fmt;
 127     uint8_t     i_payload_type;
 128     const char  *psz_ptname;
 129     unsigned    i_clock_rate;
 130     unsigned    i_channels;
 131     char        *psz_fmtp;
 132
 133 };
 134
 135 struct vod_media_t
 136 {
 137     int id;
 138
 139     /* VoD server */
 140     vod_t *p_vod;
 141
 142     /* RTSP server */
 143     httpd_url_t  *p_rtsp_url;
 144     char         *psz_rtsp_control_v4;
 145     char         *psz_rtsp_control_v6;
 146     char         *psz_rtsp_path;
 147
 148     vlc_mutex_t lock;
 149
 150     /* ES list */
 151     int        i_es;
 152     media_es_t **es;
 153     const char *psz_mux;
 154     bool  b_raw;
 155
 156     /* RTSP client */
 157     int           i_rtsp;
 158     rtsp_client_t **rtsp;
 159
 160     /* Infos */
 161     mtime_t i_length;
 162 };
 163
 164 struct vod_sys_t
 165 {
 166     /* RTSP server */
 167     httpd_host_t *p_rtsp_host;
 168     char *psz_path;
 169     int i_throttle_users;
 170     int i_connections;
 171
 172     char *psz_raw_mux;
 173
 174     int i_session_timeout;
 175
 176     /* List of media */
 177     int i_media_id;
 178     int i_media;
 179     vod_media_t **media;
 180
 181     /* */
 182     vlc_thread_t thread;
 183     block_fifo_t *p_fifo_cmd;
 184 };
 185
 186 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 187 typedef enum
 188 {
 189     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 190
 191     RTSP_CMD_TYPE_PLAY,
 192     RTSP_CMD_TYPE_PAUSE,
 193     RTSP_CMD_TYPE_STOP,
 194     RTSP_CMD_TYPE_SEEK,
 195     RTSP_CMD_TYPE_REWIND,
 196     RTSP_CMD_TYPE_FORWARD,
 197
 198     RTSP_CMD_TYPE_ADD,
 199     RTSP_CMD_TYPE_DEL,
 200 } rtsp_cmd_type_t;
 201
 202 /* */
 203 typedef struct
 204 {
 205     int i_type;
 206     int i_media_id;
 207     vod_media_t *p_media;
 208     char *psz_session;
 209     char *psz_arg;
 210     int64_t i_arg;
 211     double f_arg;
 212 } rtsp_cmd_t;
 213
 214 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 215 static void         MediaDel( vod_t *, vod_media_t * );
 216 static void         MediaAskDel ( vod_t *, vod_media_t * );
 217 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 218 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 219
 220 static void* CommandThread( void * );
 221 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *,
 222                           const char *psz_session, int64_t i_arg,
 223                           double f_arg, const char *psz_arg );
 224
 225 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 226 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 227 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 228
 229 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 230                          httpd_message_t *, const httpd_message_t * );
 231 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 232                            httpd_message_t *, const httpd_message_t * );
 233
 234 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 235
 236 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 237 {
 238     static const char hex[16] = "0123456789abcdef";
 239
 240     for( int i = 0; i < i_data; i++ )
 241     {
 242         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 243         s[2*i+1] = hex[(p_data[i]   )&0xf];
 244     }
 245     s[2*i_data] = '\0';
 246 }
 247
 248 /*****************************************************************************
 249  * Open: Starts the RTSP server module
 250  *****************************************************************************/
 251 static int Open( vlc_object_t *p_this )
 252 {
 253     vod_t *p_vod = (vod_t *)p_this;
 254     vod_sys_t *p_sys = NULL;
 255     char *psz_url = NULL;
 256     vlc_url_t url;
 257
 258     psz_url = var_InheritString( p_vod, "rtsp-host" );
 259     vlc_UrlParse( &url, psz_url, 0 );
 260     free( psz_url );
 261
 262     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 263     if( !p_sys ) goto error;
 264     p_sys->p_rtsp_host = 0;
 265
 266     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 267
 268     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 269     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 270     p_sys->i_connections = 0;
 271
 272     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 273
 274     p_sys->p_rtsp_host = vlc_rtsp_HostNew( VLC_OBJECT(p_vod) );
 275     if( !p_sys->p_rtsp_host )
 276     {
 277         msg_Err( p_vod, "cannot create RTSP server" );
 278         goto error;
 279     }
 280
 281     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 282
 283     TAB_INIT( p_sys->i_media, p_sys->media );
 284     p_sys->i_media_id = 0;
 285
 286     p_vod->pf_media_new = MediaNew;
 287     p_vod->pf_media_del = MediaAskDel;
 288
 289     p_sys->p_fifo_cmd = block_FifoNew();
 290     if( vlc_clone( &p_sys->thread, CommandThread, p_vod, VLC_THREAD_PRIORITY_LOW ) )
 291     {
 292         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 293         block_FifoRelease( p_sys->p_fifo_cmd );
 294         free( p_sys->psz_path );
 295         goto error;
 296     }
 297
 298     vlc_UrlClean( &url );
 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         goto error;
 374
 375     p_media->p_rtsp_url =
 376         httpd_UrlNew( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL, NULL );
 377
 378     if( !p_media->p_rtsp_url )
 379     {
 380         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 381         goto error;
 382     }
 383
 384     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 385
 386     if( asprintf( &p_media->psz_rtsp_control_v4,
 387                   "rtsp://%%s:%%d%s/trackID=%%d",
 388                   p_media->psz_rtsp_path ) < 0 )
 389         goto error;
 390
 391     if( asprintf( &p_media->psz_rtsp_control_v6,
 392                   "rtsp://[%%s]:%%d%s/trackID=%%d",
 393                   p_media->psz_rtsp_path ) < 0 )
 394         goto error;
 395
 396     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 397                     RtspCallback, (void*)p_media );
 398     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 399                     RtspCallback, (void*)p_media );
 400     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 401                     RtspCallback, (void*)p_media );
 402     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 403                     RtspCallback, (void*)p_media );
 404     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 405                     RtspCallback, (void*)p_media );
 406     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 407                     RtspCallback, (void*)p_media );
 408
 409     p_media->p_vod = p_vod;
 410
 411     vlc_mutex_init( &p_media->lock );
 412
 413     p_media->i_length = input_item_GetDuration( p_item );
 414
 415     vlc_mutex_lock( &p_item->lock );
 416     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 417     for( int i = 0; i < p_item->i_es; i++ )
 418     {
 419         MediaAddES( p_vod, p_media, p_item->es[i] );
 420     }
 421     vlc_mutex_unlock( &p_item->lock );
 422
 423     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0, 0.0, NULL );
 424     return p_media;
 425
 426 error:
 427     if( p_media )
 428     {
 429         free( p_media->psz_rtsp_control_v4 );
 430         if( p_media->p_rtsp_url )
 431             httpd_UrlDelete( p_media->p_rtsp_url );
 432         free( p_media->psz_rtsp_path );
 433         free( p_media );
 434     }
 435     return NULL;
 436 }
 437
 438 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 439 {
 440     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0, 0.0, NULL );
 441 }
 442
 443 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 444 {
 445     vod_sys_t *p_sys = p_vod->p_sys;
 446
 447     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 448
 449     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 450
 451     httpd_UrlDelete( p_media->p_rtsp_url );
 452
 453     while( p_media->i_rtsp > 0 )
 454         RtspClientDel( p_media, p_media->rtsp[0] );
 455     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 456
 457     free( p_media->psz_rtsp_path );
 458     free( p_media->psz_rtsp_control_v6 );
 459     free( p_media->psz_rtsp_control_v4 );
 460
 461     while( p_media->i_es )
 462         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 463     TAB_CLEAN( p_media->i_es, p_media->es );
 464
 465     vlc_mutex_destroy( &p_media->lock );
 466
 467     free( p_media );
 468 }
 469
 470 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 471 {
 472     char *psz_urlc;
 473
 474     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 475     if( !p_es )
 476         return VLC_ENOMEM;
 477
 478     p_media->psz_mux = NULL;
 479
 480     /* TODO: update SDP, etc... */
 481     if( asprintf( &psz_urlc, "%s/trackID=%d",
 482               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 483     {
 484         free( p_es );
 485         return VLC_ENOMEM;
 486     }
 487     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 488
 489     /* Dynamic payload. No conflict since we put each ES in its own
 490      * RTP session */
 491     p_es->i_payload_type = 96;
 492     p_es->i_clock_rate = 90000;
 493     p_es->i_channels = 1;
 494
 495     switch( p_fmt->i_codec )
 496     {
 497         case VLC_CODEC_S16B:
 498             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 499             {
 500                 p_es->i_payload_type = 11;
 501             }
 502             else if( p_fmt->audio.i_channels == 2 &&
 503                      p_fmt->audio.i_rate == 44100 )
 504             {
 505                 p_es->i_payload_type = 10;
 506             }
 507             p_es->psz_ptname = "L16";
 508             p_es->i_clock_rate = p_fmt->audio.i_rate;
 509             p_es->i_channels = p_fmt->audio.i_channels;
 510             break;
 511         case VLC_CODEC_U8:
 512             p_es->psz_ptname = "L8";
 513             p_es->i_clock_rate = p_fmt->audio.i_rate;
 514             p_es->i_channels = p_fmt->audio.i_channels;
 515             break;
 516         case VLC_CODEC_MPGA:
 517             p_es->i_payload_type = 14;
 518             p_es->psz_ptname = "MPA";
 519             break;
 520         case VLC_CODEC_MPGV:
 521             p_es->i_payload_type = 32;
 522             p_es->psz_ptname = "MPV";
 523             break;
 524         case VLC_CODEC_A52:
 525             p_es->psz_ptname = "ac3";
 526             p_es->i_clock_rate = p_fmt->audio.i_rate;
 527             break;
 528         case VLC_CODEC_H263:
 529             p_es->psz_ptname = "H263-1998";
 530             break;
 531         case VLC_CODEC_H264:
 532             p_es->psz_ptname = "H264";
 533             p_es->psz_fmtp = NULL;
 534             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 535             if( p_fmt->i_extra > 0 )
 536             {
 537                 uint8_t *p_buffer = p_fmt->p_extra;
 538                 int     i_buffer = p_fmt->i_extra;
 539                 char    *p_64_sps = NULL;
 540                 char    *p_64_pps = NULL;
 541                 char    hexa[6+1];
 542
 543                 while( i_buffer > 4 )
 544                 {
 545                     int i_offset    = 0;
 546                     int i_size      = 0;
 547
 548                     while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
 549                            p_buffer[2] != 1 )
 550                     {
 551                         p_buffer++;
 552                         i_buffer--;
 553                         if( i_buffer == 0 ) break;
 554                     }
 555
 556                     if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
 557                     {
 558                         /* No startcode found.. */
 559                         break;
 560                     }
 561                     p_buffer += 3;
 562                     i_buffer -= 3;
 563
 564                     const int i_nal_type = p_buffer[0]&0x1f;
 565
 566                     i_size = i_buffer;
 567                     for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
 568                     {
 569                         if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
 570                         {
 571                             /* we found another startcode */
 572                             while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
 573                                 i_offset--;
 574                             i_size = i_offset;
 575                             break;
 576                         }
 577                     }
 578
 579                     if( i_size == 0 )
 580                     {
 581                         /* No-info found in nal */
 582                         continue;
 583                     }
 584
 585                     if( i_nal_type == 7 )
 586                     {
 587                         free( p_64_sps );
 588                         p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
 589                         /* XXX: nothing ensures that i_size >= 4 ?? */
 590                         sprintf_hexa( hexa, &p_buffer[1], 3 );
 591                     }
 592                     else if( i_nal_type == 8 )
 593                     {
 594                         free( p_64_pps );
 595                         p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
 596                     }
 597                     i_buffer -= i_size;
 598                     p_buffer += i_size;
 599                 }
 600                 /* */
 601                 if( p_64_sps && p_64_pps )
 602                 {
 603                     if( asprintf( &p_es->psz_fmtp,
 604                                   "packetization-mode=1;profile-level-id=%s;"
 605                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 606                                   p_64_pps ) < 0 )
 607                     {
 608                         free( p_64_sps );
 609                         free( p_64_pps );
 610                         free( psz_urlc );
 611                         free( p_es );
 612                         return VLC_ENOMEM;
 613                     }
 614                 }
 615                 free( p_64_sps );
 616                 free( p_64_pps );
 617             }
 618             if( !p_es->psz_fmtp )
 619                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 620             break;
 621         case VLC_CODEC_MP4V:
 622             p_es->psz_ptname = "MP4V-ES";
 623             if( p_fmt->i_extra > 0 )
 624             {
 625                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 626                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 627                 if( asprintf( &p_es->psz_fmtp,
 628                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 629                     p_es->psz_fmtp = NULL;
 630                 free( p_hexa );
 631             }
 632             break;
 633         case VLC_CODEC_MP4A:
 634             p_es->psz_ptname = "mpeg4-generic";
 635             p_es->i_clock_rate = p_fmt->audio.i_rate;
 636             if( p_fmt->i_extra > 0 )
 637             {
 638                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 639                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 640                 if( asprintf( &p_es->psz_fmtp,
 641                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 642                               "config=%s; SizeLength=13;IndexLength=3; "
 643                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 644                     p_es->psz_fmtp = NULL;
 645                 free( p_hexa );
 646             }
 647             break;
 648         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 649             p_media->psz_mux = "ts";
 650             p_es->i_payload_type = 33;
 651             p_es->psz_ptname = "MP2T";
 652             break;
 653         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 654             p_media->psz_mux = "ps";
 655             p_es->psz_ptname = "MP2P";
 656             break;
 657         case VLC_CODEC_AMR_NB:
 658             p_es->psz_ptname = "AMR";
 659             p_es->i_clock_rate = 8000;
 660             if(p_fmt->audio.i_channels == 2 )
 661                 p_es->i_channels = 2;
 662             p_es->psz_fmtp = strdup( "octet-align=1" );
 663             break;
 664         case VLC_CODEC_AMR_WB:
 665             p_es->psz_ptname = "AMR-WB";
 666             p_es->i_clock_rate = 16000;
 667             if(p_fmt->audio.i_channels == 2 )
 668                 p_es->i_channels = 2;
 669             p_es->psz_fmtp = strdup( "octet-align=1" );
 670             break;
 671
 672         default:
 673             msg_Err( p_vod, "cannot add this stream (unsupported "
 674                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 675             free( psz_urlc );
 676             free( p_es );
 677             return VLC_EGENERIC;
 678     }
 679
 680     p_es->p_rtsp_url =
 681         httpd_UrlNew( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL );
 682
 683     if( !p_es->p_rtsp_url )
 684     {
 685         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 686         free( psz_urlc );
 687         free( p_es );
 688         return VLC_EGENERIC;
 689     }
 690     free( psz_urlc );
 691
 692     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 693                     RtspCallbackES, (void*)p_es );
 694     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 695                     RtspCallbackES, (void*)p_es );
 696     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 697                     RtspCallbackES, (void*)p_es );
 698     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 699                     RtspCallbackES, (void*)p_es );
 700
 701     es_format_Copy( &p_es->fmt, p_fmt );
 702     p_es->p_vod = p_vod;
 703     p_es->p_media = p_media;
 704
 705     vlc_mutex_lock( &p_media->lock );
 706     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 707     vlc_mutex_unlock( &p_media->lock );
 708
 709     return VLC_SUCCESS;
 710 }
 711
 712 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 713 {
 714     media_es_t *p_es = NULL;
 715
 716     /* Find the ES */
 717     for( int i = 0; i < p_media->i_es; i++ )
 718     {
 719         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 720             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 721             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 722         {
 723             p_es = p_media->es[i];
 724         }
 725     }
 726     if( !p_es ) return;
 727
 728     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 729
 730     vlc_mutex_lock( &p_media->lock );
 731     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 732     vlc_mutex_unlock( &p_media->lock );
 733
 734     free( p_es->psz_fmtp );
 735
 736     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 737     es_format_Clean( &p_es->fmt );
 738     free( p_es );
 739 }
 740
 741 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,
 742                          double f_arg, const char *psz_arg )
 743 {
 744     rtsp_cmd_t cmd;
 745     block_t *p_cmd;
 746
 747     memset( &cmd, 0, sizeof(cmd) );
 748     cmd.i_type = i_type;
 749     cmd.p_media = p_media;
 750     if( p_media )
 751         cmd.i_media_id = p_media->id;
 752     if( psz_session )
 753         cmd.psz_session = strdup(psz_session);
 754     cmd.i_arg = i_arg;
 755     cmd.f_arg = f_arg;
 756     if( psz_arg )
 757         cmd.psz_arg = strdup(psz_arg);
 758
 759     p_cmd = block_Alloc( sizeof(rtsp_cmd_t) );
 760     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 761
 762     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 763 }
 764
 765 static void* CommandThread( void *obj )
 766 {
 767     vod_t *p_vod = (vod_t*)obj;
 768     vod_sys_t *p_sys = p_vod->p_sys;
 769     int canc = vlc_savecancel ();
 770
 771     for( ;; )
 772     {
 773         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 774         rtsp_cmd_t cmd;
 775         vod_media_t *p_media = NULL;
 776         int i;
 777
 778         if( !p_block_cmd )
 779             break;
 780
 781         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 782         block_Release( p_block_cmd );
 783
 784         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 785             break;
 786
 787         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 788         {
 789             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 790             goto next;
 791         }
 792
 793         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 794         {
 795             MediaDel(p_vod, cmd.p_media);
 796             goto next;
 797         }
 798
 799         /* */
 800         for( i = 0; i < p_sys->i_media; i++ )
 801         {
 802             if( p_sys->media[i]->id == cmd.i_media_id )
 803                 break;
 804         }
 805         if( i >= p_sys->i_media )
 806         {
 807             goto next;
 808         }
 809         p_media = p_sys->media[i];
 810
 811         switch( cmd.i_type )
 812         {
 813         case RTSP_CMD_TYPE_PLAY:
 814             cmd.i_arg = -1;
 815             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 816                               VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
 817             break;
 818         case RTSP_CMD_TYPE_PAUSE:
 819             cmd.i_arg = -1;
 820             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 821                               VOD_MEDIA_PAUSE, &cmd.i_arg );
 822             break;
 823
 824         case RTSP_CMD_TYPE_STOP:
 825             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 826             break;
 827
 828         case RTSP_CMD_TYPE_SEEK:
 829             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 830                               VOD_MEDIA_SEEK, cmd.i_arg );
 831             break;
 832
 833         case RTSP_CMD_TYPE_REWIND:
 834             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 835                               VOD_MEDIA_REWIND, cmd.f_arg );
 836             break;
 837
 838         case RTSP_CMD_TYPE_FORWARD:
 839             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 840                               VOD_MEDIA_FORWARD, cmd.f_arg );
 841             break;
 842
 843         default:
 844             break;
 845         }
 846
 847     next:
 848         free( cmd.psz_session );
 849         free( cmd.psz_arg );
 850     }
 851
 852     vlc_restorecancel (canc);
 853     return NULL;
 854 }
 855
 856 /****************************************************************************
 857  * RTSP server implementation
 858  ****************************************************************************/
 859 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 860 {
 861     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 862
 863     if( !p_rtsp )
 864         return NULL;
 865     p_rtsp->es = 0;
 866
 867     p_rtsp->psz_session = psz_session;
 868     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 869
 870     p_media->p_vod->p_sys->i_connections++;
 871     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 872              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 873
 874     return p_rtsp;
 875 }
 876
 877 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 878 {
 879     for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
 880     {
 881         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 882             return p_media->rtsp[i];
 883     }
 884
 885     return NULL;
 886 }
 887
 888 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 889 {
 890     p_media->p_vod->p_sys->i_connections--;
 891     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 892              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 893
 894     while( p_rtsp->i_es )
 895     {
 896         p_rtsp->i_es--;
 897         free( p_rtsp->es[p_rtsp->i_es] );
 898     }
 899     free( p_rtsp->es );
 900
 901     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 902
 903     free( p_rtsp->psz_session );
 904     free( p_rtsp );
 905 }
 906
 907
 908 static int64_t ParseNPT (const char *str)
 909 {
 910     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 911     locale_t oldloc = uselocale (loc);
 912     unsigned hour, min;
 913     float sec;
 914
 915     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 916         sec += ((hour * 60) + min) * 60;
 917     else
 918     if (sscanf (str, "%f", &sec) != 1)
 919         sec = 0.;
 920
 921     if (loc != (locale_t)0)
 922     {
 923         uselocale (oldloc);
 924         freelocale (loc);
 925     }
 926     return sec * CLOCK_FREQ;
 927 }
 928
 929
 930 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 931                          httpd_message_t *answer, const httpd_message_t *query )
 932 {
 933     vod_media_t *p_media = (vod_media_t*)p_args;
 934     vod_t *p_vod = p_media->p_vod;
 935     const char *psz_transport = NULL;
 936     const char *psz_playnow = NULL; /* support option: x-playNow */
 937     const char *psz_session = NULL;
 938     const char *psz_cseq = NULL;
 939     rtsp_client_t *p_rtsp;
 940     int i_cseq = 0;
 941
 942     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 943
 944     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 945
 946     answer->i_proto   = HTTPD_PROTO_RTSP;
 947     answer->i_version = query->i_version;
 948     answer->i_type    = HTTPD_MSG_ANSWER;
 949     answer->i_body    = 0;
 950     answer->p_body    = NULL;
 951
 952     switch( query->i_type )
 953     {
 954         case HTTPD_MSG_SETUP:
 955         {
 956             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 957             psz_transport = httpd_MsgGet( query, "Transport" );
 958             if( psz_transport == NULL )
 959             {
 960                 answer->i_status = 400;
 961                 break;
 962             }
 963             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 964
 965             if( strstr( psz_transport, "unicast" ) &&
 966                 strstr( psz_transport, "client_port=" ) )
 967             {
 968                 rtsp_client_t *p_rtsp = NULL;
 969                 char ip[NI_MAXNUMERICHOST];
 970                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
 971                                    strlen("client_port=") );
 972
 973                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 974                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 975                 {
 976                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 977                     p_media->b_raw = true;
 978                 }
 979
 980                 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
 981                 {
 982                     answer->i_status = 500;
 983                     answer->i_body = 0;
 984                     answer->p_body = NULL;
 985                     break;
 986                 }
 987
 988                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
 989                          ip, i_port );
 990
 991                 psz_session = httpd_MsgGet( query, "Session" );
 992                 if( !psz_session || !*psz_session )
 993                 {
 994                     char *psz_new;
 995                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
 996                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
 997                     {
 998                         answer->i_status = 503;
 999                         answer->i_body = 0;
1000                         answer->p_body = NULL;
1001                         break;
1002                     }
1003 #warning Should use secure randomness here! (spoofing risk)
1004                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1005                         return VLC_ENOMEM;
1006                     psz_session = psz_new;
1007
1008                     p_rtsp = RtspClientNew( p_media, psz_new );
1009                     if( !p_rtsp )
1010                     {
1011                         answer->i_status = 454;
1012                         answer->i_body = 0;
1013                         answer->p_body = NULL;
1014                         break;
1015                     }
1016                 }
1017                 else
1018                 {
1019                     p_rtsp = RtspClientGet( p_media, psz_session );
1020                     if( !p_rtsp )
1021                     {
1022                         answer->i_status = 454;
1023                         answer->i_body = 0;
1024                         answer->p_body = NULL;
1025                         break;
1026                     }
1027                 }
1028
1029                 answer->i_status = 200;
1030                 answer->i_body = 0;
1031                 answer->p_body = NULL;
1032
1033                 if( p_media->b_raw )
1034                 {
1035                     p_rtsp->i_port_raw = i_port;
1036
1037                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1038                     {
1039                         httpd_MsgAdd( answer, "Transport",
1040                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1041                                       i_port, i_port + 1 );
1042                     }
1043                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1044                     {
1045                         httpd_MsgAdd( answer, "Transport",
1046                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1047                                       i_port, i_port + 1 );
1048                     }
1049                 }
1050                 else
1051                     httpd_MsgAdd( answer, "Transport",
1052                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1053                                   i_port, i_port + 1 );
1054             }
1055             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1056             {
1057                 answer->i_status = 461;
1058                 answer->i_body = 0;
1059                 answer->p_body = NULL;
1060             }
1061
1062             /* Intentional fall-through on x-playNow option in RTSP request */
1063             if( !psz_playnow )
1064                 break;
1065         }
1066
1067         case HTTPD_MSG_PLAY:
1068         {
1069             char *psz_output, ip[NI_MAXNUMERICHOST];
1070             int i_port_audio = 0, i_port_video = 0;
1071
1072             /* for now only multicast so easy */
1073             if( !psz_playnow )
1074             {
1075                 answer->i_status = 200;
1076                 answer->i_body = 0;
1077                 answer->p_body = NULL;
1078             }
1079
1080             if( !psz_session )
1081                 psz_session = httpd_MsgGet( query, "Session" );
1082             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1083
1084             p_rtsp = RtspClientGet( p_media, psz_session );
1085             if( !p_rtsp )
1086             {
1087                 answer->i_status = 500;
1088                 answer->i_body = 0;
1089                 answer->p_body = NULL;
1090                 break;
1091             }
1092
1093             if( p_rtsp->b_playing )
1094             {
1095                 const char *psz_position = httpd_MsgGet( query, "Range" );
1096                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1097                 if( psz_position )
1098                     psz_position = strstr( psz_position, "npt=" );
1099                 if( psz_position && !psz_scale )
1100                 {
1101                     int64_t i_time = ParseNPT (psz_position + 4);
1102                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1103                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1104                                  psz_session, i_time, 0.0, NULL );
1105                 }
1106                 else if( psz_scale )
1107                 {
1108                     double f_scale = 0.0;
1109                     char *end;
1110
1111                     f_scale = us_strtod( psz_scale, &end );
1112                     if( end > psz_scale )
1113                     {
1114                         f_scale = (f_scale * 30.0);
1115                         if( psz_scale[0] == '-' ) /* rewind */
1116                         {
1117                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1118                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1119                                          psz_session, 0, f_scale, NULL );
1120                         }
1121                         else if(psz_scale[0] != '1' ) /* fast-forward */
1122                         {
1123                             msg_Dbg( p_vod, "fastforward request: %s",
1124                                      psz_scale );
1125                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1126                                          psz_session, 0, f_scale, NULL );
1127                         }
1128                     }
1129                 }
1130                 /* unpause, in case it's paused */
1131                 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1132                              0, 0.0, "" );
1133                 break;
1134             }
1135
1136             if( httpd_ClientIP( cl, ip, NULL ) == NULL ) break;
1137
1138             p_rtsp->b_playing = true;
1139
1140             /* FIXME for != 1 video and 1 audio */
1141             for( int i = 0; i < p_rtsp->i_es; i++ )
1142             {
1143                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1144                     i_port_audio = p_rtsp->es[i]->i_port;
1145                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1146                     i_port_video = p_rtsp->es[i]->i_port;
1147             }
1148
1149             if( p_media->psz_mux )
1150             {
1151                 if( p_media->b_raw )
1152                 {
1153                     if( asprintf( &psz_output,
1154                               "std{access=udp,dst=%s:%i,mux=%s}",
1155                               ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
1156                         return VLC_ENOMEM;
1157                 }
1158                 else
1159                 {
1160                     if( asprintf( &psz_output,
1161                               "rtp{dst=%s,port=%i,mux=%s}",
1162                               ip, i_port_video, p_media->psz_mux ) < 0 )
1163                         return VLC_ENOMEM;
1164                 }
1165             }
1166             else
1167             {
1168                 if( asprintf( &psz_output,
1169                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1170                               ip, i_port_video, i_port_audio ) < 0 )
1171                     return VLC_ENOMEM;
1172             }
1173
1174             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1175                          0, 0.0, psz_output );
1176             free( psz_output );
1177             break;
1178         }
1179
1180         case HTTPD_MSG_DESCRIBE:
1181         {
1182             char *psz_sdp =
1183                 SDPGenerate( p_media, cl );
1184
1185             if( psz_sdp != NULL )
1186             {
1187                 answer->i_status = 200;
1188                 httpd_MsgAdd( answer, "Content-type",  "%s",
1189                               "application/sdp" );
1190
1191                 answer->p_body = (uint8_t *)psz_sdp;
1192                 answer->i_body = strlen( psz_sdp );
1193             }
1194             else
1195             {
1196                 answer->i_status = 500;
1197                 answer->p_body = NULL;
1198                 answer->i_body = 0;
1199             }
1200             break;
1201         }
1202
1203         case HTTPD_MSG_PAUSE:
1204             psz_session = httpd_MsgGet( query, "Session" );
1205             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1206
1207             p_rtsp = RtspClientGet( p_media, psz_session );
1208             if( !p_rtsp ) break;
1209
1210             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1211                          0, 0.0, NULL );
1212
1213             answer->i_status = 200;
1214             answer->i_body = 0;
1215             answer->p_body = NULL;
1216             break;
1217
1218         case HTTPD_MSG_TEARDOWN:
1219             /* for now only multicast so easy again */
1220             answer->i_status = 200;
1221             answer->i_body = 0;
1222             answer->p_body = NULL;
1223
1224             psz_session = httpd_MsgGet( query, "Session" );
1225             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1226
1227             p_rtsp = RtspClientGet( p_media, psz_session );
1228             if( !p_rtsp ) break;
1229
1230             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1231                          0, 0.0, NULL );
1232             RtspClientDel( p_media, p_rtsp );
1233             break;
1234
1235         case HTTPD_MSG_GETPARAMETER:
1236             answer->i_status = 200;
1237             answer->i_body = 0;
1238             answer->p_body = NULL;
1239             break;
1240
1241         default:
1242             return VLC_EGENERIC;
1243     }
1244
1245     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1246     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1247     psz_cseq = httpd_MsgGet( query, "Cseq" );
1248     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1249     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1250     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1251
1252     if( psz_session )
1253     {
1254          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1255              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1256                p_media->p_vod->p_sys->i_session_timeout );
1257          else
1258               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1259     }
1260
1261     return VLC_SUCCESS;
1262 }
1263
1264 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1265                            httpd_message_t *answer,
1266                            const httpd_message_t *query )
1267 {
1268     media_es_t *p_es = (media_es_t*)p_args;
1269     vod_media_t *p_media = p_es->p_media;
1270     vod_t *p_vod = p_media->p_vod;
1271     rtsp_client_t *p_rtsp = NULL;
1272     const char *psz_transport = NULL;
1273     const char *psz_playnow = NULL; /* support option: x-playNow */
1274     const char *psz_session = NULL;
1275     const char *psz_position = NULL;
1276     const char *psz_cseq = NULL;
1277     int i_cseq = 0;
1278
1279     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1280
1281     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1282
1283     answer->i_proto   = HTTPD_PROTO_RTSP;
1284     answer->i_version = query->i_version;
1285     answer->i_type    = HTTPD_MSG_ANSWER;
1286     answer->i_body    = 0;
1287     answer->p_body      = NULL;
1288
1289     switch( query->i_type )
1290     {
1291         case HTTPD_MSG_SETUP:
1292             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1293             psz_transport = httpd_MsgGet( query, "Transport" );
1294
1295             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1296
1297             if( strstr( psz_transport, "unicast" ) &&
1298                 strstr( psz_transport, "client_port=" ) )
1299             {
1300                 rtsp_client_t *p_rtsp = NULL;
1301                 rtsp_client_es_t *p_rtsp_es = NULL;
1302                 char ip[NI_MAXNUMERICHOST];
1303                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1304                                    strlen("client_port=") );
1305
1306                 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
1307                 {
1308                     answer->i_status = 500;
1309                     answer->i_body = 0;
1310                     answer->p_body = NULL;
1311                     break;
1312                 }
1313
1314                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1315                         ip, i_port );
1316
1317                 psz_session = httpd_MsgGet( query, "Session" );
1318                 if( !psz_session || !*psz_session )
1319                 {
1320                     char *psz_new;
1321                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1322                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1323                     {
1324                         answer->i_status = 503;
1325                         answer->i_body = 0;
1326                         answer->p_body = NULL;
1327                         break;
1328                     }
1329 #warning Session ID should be securely random (spoofing risk)
1330                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1331                         return VLC_ENOMEM;
1332                     psz_session = psz_new;
1333
1334                     p_rtsp = RtspClientNew( p_media, psz_new );
1335                     if( !p_rtsp )
1336                     {
1337                         answer->i_status = 454;
1338                         answer->i_body = 0;
1339                         answer->p_body = NULL;
1340                         break;
1341                     }
1342                 }
1343                 else
1344                 {
1345                     p_rtsp = RtspClientGet( p_media, psz_session );
1346                     if( !p_rtsp )
1347                     {
1348                         answer->i_status = 454;
1349                         answer->i_body = 0;
1350                         answer->p_body = NULL;
1351                         break;
1352                     }
1353                 }
1354
1355                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1356                 if( !p_rtsp_es )
1357                 {
1358                     answer->i_status = 500;
1359                     answer->i_body = 0;
1360                     answer->p_body = NULL;
1361                     break;
1362                 }
1363                 p_rtsp_es->i_port = i_port;
1364                 p_rtsp_es->p_media_es = p_es;
1365                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1366
1367                 answer->i_status = 200;
1368                 answer->i_body = 0;
1369                 answer->p_body = NULL;
1370
1371                 if( p_media->b_raw )
1372                 {
1373                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1374                     {
1375                         httpd_MsgAdd( answer, "Transport",
1376                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1377                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1378                     }
1379                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1380                     {
1381                         httpd_MsgAdd( answer, "Transport",
1382                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1383                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1384                     }
1385                 }
1386                 else
1387                 {
1388                     httpd_MsgAdd( answer, "Transport",
1389                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1390                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1391                 }
1392             }
1393             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1394             {
1395                 answer->i_status = 461;
1396                 answer->i_body = 0;
1397                 answer->p_body = NULL;
1398             }
1399
1400             /* Intentional fall-through on x-playNow option in RTSP request */
1401             if( !psz_playnow )
1402                 break;
1403
1404         case HTTPD_MSG_PLAY:
1405             /* This is kind of a kludge. Should we only support Aggregate
1406              * Operations ? */
1407             psz_session = httpd_MsgGet( query, "Session" );
1408             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1409
1410             p_rtsp = RtspClientGet( p_media, psz_session );
1411
1412             psz_position = httpd_MsgGet( query, "Range" );
1413             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1414             if( psz_position )
1415             {
1416                 int64_t i_time = ParseNPT (psz_position + 4);
1417                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1418                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1419                              psz_session, i_time, 0.0, NULL );
1420             }
1421
1422             if( !psz_playnow )
1423             {
1424                 answer->i_status = 200;
1425                 answer->i_body = 0;
1426                 answer->p_body = NULL;
1427             }
1428             break;
1429
1430         case HTTPD_MSG_TEARDOWN:
1431             answer->i_status = 200;
1432             answer->i_body = 0;
1433             answer->p_body = NULL;
1434
1435             psz_session = httpd_MsgGet( query, "Session" );
1436             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1437
1438             p_rtsp = RtspClientGet( p_media, psz_session );
1439             if( !p_rtsp ) break;
1440
1441             for( int i = 0; i < p_rtsp->i_es; i++ )
1442             {
1443                 rtsp_client_es_t *es = p_rtsp->es[i];
1444                 if( es->p_media_es == p_es )
1445                 {
1446                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, es );
1447                     break;
1448                 }
1449             }
1450
1451             if( !p_rtsp->i_es )
1452             {
1453                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1454                              0, 0.0, NULL );
1455                 RtspClientDel( p_media, p_rtsp );
1456             }
1457             break;
1458
1459         case HTTPD_MSG_PAUSE:
1460             /* This is kind of a kludge. Should we only support Aggregate
1461              * Operations ? */
1462             psz_session = httpd_MsgGet( query, "Session" );
1463             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1464
1465             p_rtsp = RtspClientGet( p_media, psz_session );
1466             if( !p_rtsp ) break;
1467
1468             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1469                          0, 0.0, NULL );
1470
1471             answer->i_status = 200;
1472             answer->i_body = 0;
1473             answer->p_body = NULL;
1474             break;
1475
1476         default:
1477             return VLC_EGENERIC;
1478             break;
1479     }
1480
1481     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1482     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1483     psz_cseq = httpd_MsgGet( query, "Cseq" );
1484     if (psz_cseq)
1485         i_cseq = atoi( psz_cseq );
1486     else
1487         i_cseq = 0;
1488     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1489     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1490
1491     if( psz_session )
1492         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1493
1494     return VLC_SUCCESS;
1495 }
1496
1497 /*****************************************************************************
1498  * SDPGenerate: TODO
1499  * FIXME: need to be moved to a common place ?
1500  *****************************************************************************/
1501 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1502 {
1503     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1504     const char *psz_control;
1505     int port;
1506
1507     if( httpd_ServerIP( cl, ip, &port ) == NULL )
1508         return NULL;
1509
1510     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1511
1512     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1513                        : p_media->psz_rtsp_control_v4;
1514
1515     /* Dummy destination address for RTSP */
1516     struct sockaddr_storage dst;
1517     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1518                             : sizeof( struct sockaddr_in );
1519     memset (&dst, 0, dstlen);
1520     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1521 #ifdef HAVE_SA_LEN
1522     dst.ss_len = dstlen;
1523 #endif
1524
1525     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1526                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1527     if( psz_sdp == NULL )
1528         return NULL;
1529
1530     if( p_media->i_length > 0 )
1531     {
1532         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1533         sdp_AddAttribute( &psz_sdp, "range","npt=0-%lld.%03u", d.quot,
1534                           (unsigned)d.rem );
1535     }
1536
1537     for( int i = 0; i < p_media->i_es; i++ )
1538     {
1539         media_es_t *p_es = p_media->es[i];
1540         const char *mime_major; /* major MIME type */
1541
1542         switch( p_es->fmt.i_cat )
1543         {
1544             case VIDEO_ES:
1545                 mime_major = "video";
1546                 break;
1547             case AUDIO_ES:
1548                 mime_major = "audio";
1549                 break;
1550             case SPU_ES:
1551                 mime_major = "text";
1552                 break;
1553             default:
1554                 continue;
1555         }
1556
1557         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1558                       p_es->i_payload_type, false, 0,
1559                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1560                       p_es->psz_fmtp );
1561
1562         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, port, i );
1563     }
1564
1565     return psz_sdp;
1566 }