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

   1 /*****************************************************************************
   2  * audioscrobbler.c : audioscrobbler submission plugin
   3  *****************************************************************************
   4  * Copyright (C) 2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Rafaël Carré <rafael -dot- carre -at- gmail -dot- com>
   8  *          Kenneth Ostby <kenneo -at- idi -dot- ntnu -dot- no>
   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 #define _GNU_SOURCE
  30 #include <string.h>
  31
  32 #if defined( WIN32 )
  33 #include <time.h>
  34 #endif
  35 /*
  36  * TODO :
  37  * implement musicbrainz unique track identifier in p_meta
  38  * check meta_engine's state, and remove delaying of metadata reading
  39  * check md5 operations on BIGENDIAN and 64 bits architectures
  40  */
  41 #include <vlc/vlc.h>
  42 #include <vlc/intf.h>
  43 #include <vlc_meta.h>
  44 #include <vlc_md5.h>
  45 #include <vlc_block.h>
  46 #include <vlc_stream.h>
  47 #include <vlc_url.h>
  48 #include <network.h>
  49 #include <vlc_interaction.h>
  50
  51 /*****************************************************************************
  52  * Local prototypes
  53  *****************************************************************************/
  54
  55 /* Keeps track of metadata to be submitted, and if song has been submitted */
  56 typedef struct audioscrobbler_song_t
  57 {
  58     char        *psz_a;                /* track artist     */
  59     char        *psz_t;                /* track title      */
  60     char        *psz_b;                /* track album      */
  61     int         i_l;                   /* track length     */
  62 /* vlc can't retrieve musicbrainz id, so let's ignore it   */
  63 /*  int         i_m;  */               /* musicbrainz id   */
  64     char        *psz_i;                /* date             */
  65     time_t      time_playing;          /* date (epoch)     */
  66 } audioscrobbler_song_t;
  67
  68
  69 /* Queue to be submitted to server, 10 songs max */
  70 typedef struct audioscrobbler_queue_t
  71 {
  72     audioscrobbler_song_t   **p_queue;      /* contains up to 10 songs        */
  73     int                     i_songs_nb;     /* number of songs                */
  74     void                    *p_next_queue;  /* if queue full, pointer to next */
  75 } audioscrobbler_queue_t;
  76
  77 struct intf_sys_t
  78 {
  79     audioscrobbler_queue_t  *p_first_queue;     /* 1st queue              */
  80     vlc_mutex_t             lock;               /* p_sys mutex            */
  81
  82 /* data about audioscrobbler session */
  83     int                     i_interval;         /* last interval recorded */
  84     time_t                  time_last_interval; /* when was it recorded ? */
  85     char                    *psz_submit_host;   /* where to submit data ? */
  86     int                     i_submit_port;      /* at which port ?        */
  87     char                    *psz_submit_file;   /* in which file ?        */
  88     char                    *psz_username;      /* last.fm username       */
  89     vlc_bool_t              b_handshaked;       /* did we handshake ?     */
  90     int                     i_post_socket;      /* socket for submission  */
  91     char                    *psz_response_md5;  /* md5 response to use    */
  92
  93 /* data about input elements */
  94     audioscrobbler_song_t   *p_current_song;    /* song being played      */
  95     time_t                  time_pause;         /* time when vlc paused   */
  96     time_t                  time_total_pauses;  /* sum of time in pause   */
  97     vlc_bool_t              b_queued;           /* has it been queud ?    */
  98     vlc_bool_t              b_metadata_read;    /* did we read metadata ? */
  99     vlc_bool_t              b_paused;           /* are we playing ?       */
 100     vlc_bool_t              b_waiting_meta;     /* we need fetched data?  */
 101 };
 102
 103 intf_sys_t *p_sys_global;     /* to retrieve p_sys in Run() thread */
 104
 105 static int  Open    ( vlc_object_t * );
 106 static void Close   ( vlc_object_t * );
 107 static void Run     ( intf_thread_t * );
 108 static int ItemChange   ( vlc_object_t *, const char *,
 109                         vlc_value_t, vlc_value_t, void * );
 110 static int PlayingChange( vlc_object_t *, const char *,
 111                         vlc_value_t, vlc_value_t, void * );
 112 static int AddToQueue   ( intf_thread_t *p_this );
 113 static int Handshake    ( intf_thread_t *p_sd );
 114 static int ReadMetaData ( intf_thread_t *p_this );
 115 static int ReadLocalMetaData( intf_thread_t *p_this, input_thread_t  *p_input );
 116 void DeleteQueue( audioscrobbler_queue_t *p_queue );
 117
 118 /*****************************************************************************
 119  * Module descriptor
 120  ****************************************************************************/
 121
 122
 123 #define APPLICATION_NAME "VLC media player"
 124 #define USERNAME_TEXT N_("Username")
 125 #define USERNAME_LONGTEXT N_("The username of your last.fm account")
 126 #define PASSWORD_TEXT N_("Password")
 127 #define PASSWORD_LONGTEXT N_("The password of your last.fm account")
 128
 129 /* if something goes wrong, we wait at least one minute before trying again */
 130 #define DEFAULT_INTERVAL 60
 131 /* last.fm client identifier */
 132 #define CLIENT_NAME     PACKAGE
 133 #define CLIENT_VERSION  VERSION
 134
 135 /* HTTP POST request : to submit data */
 136 #define    POST_REQUEST "POST /%s HTTP/1.1\n"                               \
 137                         "Accept-Encoding: identity\n"                       \
 138                         "Content-length: %d\n"                              \
 139                         "Connection: close\n"                               \
 140                         "Content-type: application/x-www-form-urlencoded\n" \
 141                         "Host: %s\n"                                        \
 142                         "User-agent: VLC Media Player/%s\r\n"               \
 143                         "\r\n"                                              \
 144                         "%s\r\n"                                            \
 145                         "\r\n"
 146
 147 /* data to submit */
 148 #define POST_DATA "u=%s&s=%s&a%%5B%d%%5D=%s&t%%5B%d%%5D=%s" \
 149                   "&b%%5B%d%%5D=%s&m%%5B%d%%5D=&l%%5B%d%%5D=%d&i%%5B%d%%5D=%s"
 150
 151 vlc_module_begin();
 152     set_category( CAT_INTERFACE );
 153     set_subcategory( SUBCAT_INTERFACE_CONTROL );
 154     set_shortname( N_( "Audioscrobbler" ) );
 155     set_description( N_("Audioscrobbler submission Plugin") );
 156     add_string( "lastfm-username", "", NULL,
 157                 USERNAME_TEXT, USERNAME_LONGTEXT, VLC_FALSE );
 158     add_string( "lastfm-password", "", NULL,
 159                 PASSWORD_TEXT, PASSWORD_LONGTEXT, VLC_FALSE );
 160     set_capability( "interface", 0 );
 161     set_callbacks( Open, Close );
 162 vlc_module_end();
 163
 164 /*****************************************************************************
 165  * Open: initialize and create stuff
 166  *****************************************************************************/
 167
 168 static int Open( vlc_object_t *p_this )
 169 {
 170     playlist_t          *p_playlist;
 171
 172     intf_thread_t *p_intf = ( intf_thread_t* ) p_this;
 173     intf_sys_t *p_sys = malloc( sizeof( intf_sys_t ) );
 174     if( !p_sys )
 175     {
 176       goto error;
 177     }
 178     vlc_mutex_init( p_this, &p_sys->lock );
 179
 180     p_sys_global = p_sys;
 181     p_sys->psz_submit_host = NULL;
 182     p_sys->psz_submit_file = NULL;
 183     p_sys->b_handshaked = VLC_FALSE;
 184     p_sys->i_interval = 0;
 185     p_sys->time_last_interval = time( NULL );
 186     p_sys->psz_username = NULL;
 187     p_sys->b_paused = VLC_FALSE;
 188
 189     /* md5 response is 32 chars, + final \0 */
 190     p_sys->psz_response_md5 = malloc( sizeof( char ) * 33 );
 191     if( !p_sys->psz_response_md5 )
 192     {
 193         vlc_mutex_destroy ( &p_sys->lock );
 194         goto error;
 195    }
 196
 197     p_sys->p_first_queue = malloc( sizeof( audioscrobbler_queue_t ) );
 198     if( !p_sys->p_first_queue )
 199     {
 200         vlc_mutex_destroy( &p_sys->lock );
 201         goto error;
 202     }
 203
 204     p_sys->p_current_song = malloc( sizeof( audioscrobbler_song_t ) );
 205     if( !p_sys->p_current_song )
 206     {
 207         vlc_mutex_destroy( &p_sys->lock );
 208         goto error;
 209     }
 210
 211     /* queues can't contain more than 10 songs */
 212     p_sys->p_first_queue->p_queue =
 213         malloc( 10 * sizeof( audioscrobbler_song_t ) );
 214     if( !p_sys->p_current_song )
 215     {
 216         vlc_mutex_destroy( &p_sys->lock );
 217         goto error;
 218     }
 219
 220     p_sys->p_first_queue->i_songs_nb = 0;
 221     p_sys->p_first_queue->p_next_queue = NULL;
 222
 223     p_playlist = pl_Yield( p_intf );
 224     var_AddCallback( p_playlist, "playlist-current", ItemChange, p_intf );
 225     pl_Release( p_playlist );
 226
 227     p_intf->pf_run = Run;
 228
 229     return VLC_SUCCESS;
 230
 231 error:
 232     free( p_sys->p_current_song );
 233     free( p_sys->p_first_queue );
 234     free( p_sys->psz_response_md5 );
 235     free( p_sys );
 236
 237     return VLC_ENOMEM;
 238 }
 239
 240 /*****************************************************************************
 241  * Close: destroy interface stuff
 242  *****************************************************************************/
 243 static void Close( vlc_object_t *p_this )
 244 {
 245     audioscrobbler_queue_t      *p_current_queue, *p_next_queue;
 246     playlist_t                  *p_playlist;
 247     input_thread_t              *p_input;
 248
 249     intf_thread_t *p_intf = ( intf_thread_t* ) p_this;
 250     intf_sys_t *p_sys = p_intf->p_sys;
 251
 252     p_playlist = pl_Yield( p_intf );
 253     PL_LOCK;
 254     p_input = p_playlist->p_input;
 255     var_DelCallback( p_playlist, "playlist-current", ItemChange, p_intf );
 256
 257     if ( p_input )
 258     {
 259         vlc_object_yield( p_input );
 260         var_DelCallback( p_input, "state", PlayingChange, p_intf );
 261         vlc_object_release( p_input );
 262     }
 263
 264     PL_UNLOCK;
 265     pl_Release( p_playlist );
 266
 267     vlc_mutex_lock ( &p_sys->lock );
 268     p_current_queue = p_sys->p_first_queue;
 269     vlc_mutex_unlock ( &p_sys->lock );
 270
 271     while( ( p_current_queue->i_songs_nb == 10 ) &&
 272         ( p_current_queue->p_next_queue != NULL ) )
 273     {
 274         p_next_queue = p_current_queue->p_next_queue;
 275         DeleteQueue( p_current_queue );
 276         free( p_current_queue );
 277         p_current_queue = p_next_queue;
 278     }
 279
 280     DeleteQueue( p_current_queue );
 281     free( p_current_queue );
 282
 283     vlc_mutex_lock ( &p_sys->lock );
 284     free( p_sys->psz_username );
 285     free( p_sys->p_current_song );
 286     vlc_mutex_unlock ( &p_sys->lock );
 287     vlc_mutex_destroy( &p_sys->lock );
 288     free( p_sys );
 289 }
 290
 291 /*****************************************************************************
 292  * Run : Handshake with audioscrobbler, then submit songs
 293  *****************************************************************************/
 294 static void Run( intf_thread_t *p_this )
 295 {
 296     char                    *psz_submit_string = NULL;
 297     int                     i_net_ret;
 298     int                     i_song;
 299     playlist_t              *p_playlist;
 300     uint8_t                 *p_buffer = NULL;
 301     char                    *p_buffer_pos = NULL;
 302     audioscrobbler_queue_t  *p_first_queue;
 303     /* TODO: remove when meta_engine works */
 304     time_t                  played_time;
 305
 306     p_this->p_sys = p_sys_global;
 307     intf_sys_t *p_sys = p_this->p_sys;
 308
 309     /* main loop */
 310     while( !p_this->b_die )
 311     {
 312         /* verify if there is data to submit
 313          * and if waiting interval is finished */
 314         if ( ( p_sys->p_first_queue->i_songs_nb > 0 ) &&
 315             ( time( NULL ) >=
 316             ( p_sys->time_last_interval + p_sys->i_interval )  ) )
 317         {
 318             /* handshake if needed */
 319             if( p_sys->b_handshaked == VLC_FALSE )
 320             {
 321                 msg_Dbg( p_this, "Handshaking with last.fm ..." );
 322
 323                 switch( Handshake( p_this ) )
 324                 {
 325                     case VLC_ENOMEM:
 326                         msg_Err( p_this, "Out of memory" );
 327                         return;
 328                         break;
 329
 330                     case VLC_ENOVAR:
 331                         /* username not set */
 332                         vlc_mutex_unlock ( &p_sys->lock );
 333                         intf_UserFatal( p_this, VLC_FALSE,
 334                             _("last.fm username not set"),
 335                             _("You have to set a username,"
 336                             " and then restart VLC.\n"
 337                             "Visit https://www.last.fm/join/"
 338                             " if you don't have one.")
 339                         );
 340                         return;
 341                         break;
 342
 343                     case VLC_SUCCESS:
 344                         msg_Dbg( p_this, "Handshake successfull :)" );
 345                         vlc_mutex_lock ( &p_sys->lock );
 346                         p_sys->b_handshaked = VLC_TRUE;
 347                         vlc_mutex_unlock ( &p_sys->lock );
 348                         break;
 349
 350                     case VLC_EGENERIC:
 351                     default:
 352                         /* VLC_EGENERIC : we'll try later */
 353                         vlc_mutex_lock ( &p_sys->lock );
 354                         p_sys->i_interval = DEFAULT_INTERVAL;
 355                         time( &p_sys->time_last_interval );
 356                         vlc_mutex_unlock ( &p_sys->lock );
 357                         break;
 358                 }
 359             }
 360
 361             msg_Dbg( p_this, "Going to submit some data..." );
 362             vlc_mutex_lock ( &p_sys->lock );
 363             psz_submit_string = malloc( 2048 * sizeof( char ) );
 364
 365             if (!psz_submit_string)
 366             {
 367                 msg_Err( p_this, "Out of memory" );
 368                 vlc_mutex_unlock ( &p_sys->lock );
 369                 return;
 370             }
 371
 372             /* forge the HTTP POST request */
 373             for (i_song = 0; i_song < p_sys->p_first_queue->i_songs_nb ;
 374                 i_song++ )
 375             {
 376                 snprintf( psz_submit_string, 2048, POST_DATA,
 377                     p_sys->psz_username, p_sys->psz_response_md5,
 378                     i_song, p_sys->p_first_queue->p_queue[i_song]->psz_a,
 379                     i_song, p_sys->p_first_queue->p_queue[i_song]->psz_t,
 380                     i_song, p_sys->p_first_queue->p_queue[i_song]->psz_b,
 381                     i_song,
 382                     i_song, p_sys->p_first_queue->p_queue[i_song]->i_l,
 383                     i_song, p_sys->p_first_queue->p_queue[i_song]->psz_i
 384                 );
 385             }
 386
 387             p_sys->i_post_socket = net_ConnectTCP( p_this,
 388                 p_sys->psz_submit_host, p_sys->i_submit_port);
 389
 390             /* we transmit the data */
 391             i_net_ret = net_Printf(
 392                 VLC_OBJECT(p_this), p_sys->i_post_socket, NULL,
 393                 POST_REQUEST, p_sys->psz_submit_file,
 394                 strlen( psz_submit_string), p_sys->psz_submit_file,
 395                 VERSION, psz_submit_string
 396             );
 397
 398             if ( i_net_ret == -1 )
 399             {
 400                 /* If connection fails, we assume we must handshake again */
 401                 p_sys->i_interval = DEFAULT_INTERVAL;
 402                 time( &p_sys->time_last_interval );
 403                 p_sys->b_handshaked = VLC_FALSE;
 404                 vlc_mutex_unlock( &p_sys->lock );
 405                 continue;
 406             }
 407
 408             p_buffer = ( uint8_t* ) calloc( 1, 1024 );
 409             if ( !p_buffer )
 410             {
 411                 msg_Err( p_this, "Out of memory" );
 412                 vlc_mutex_unlock ( &p_sys->lock );
 413                 return;
 414             }
 415
 416             i_net_ret = net_Read( p_this, p_sys->i_post_socket, NULL,
 417                         p_buffer, 1024, VLC_FALSE );
 418             if ( i_net_ret <= 0 )
 419             {
 420                 /* if we get no answer, something went wrong : try again */
 421                 vlc_mutex_unlock( &p_sys->lock );
 422                 continue;
 423             }
 424
 425             net_Close( p_sys->i_post_socket );
 426
 427             /* record interval */
 428             p_buffer_pos = strstr( ( char * ) p_buffer, "INTERVAL" );
 429             if ( p_buffer_pos )
 430             {
 431                 p_sys->i_interval = atoi( p_buffer_pos +
 432                                             strlen( "INTERVAL " ) );
 433                 time( &p_sys->time_last_interval );
 434             }
 435
 436             p_buffer_pos = strstr( ( char * ) p_buffer, "FAILED" );
 437             if ( p_buffer_pos )
 438             {
 439                 /* woops, something failed */
 440                 msg_Dbg( p_this, p_buffer_pos );
 441                 vlc_mutex_unlock ( &p_sys->lock );
 442                 continue;
 443             }
 444
 445             p_buffer_pos = strstr( ( char * ) p_buffer, "BADAUTH" );
 446             if ( p_buffer_pos )
 447             {
 448                 /* too much time elapsed after last handshake? */
 449                 msg_Dbg( p_this, "Authentification failed, handshaking again" );
 450                 p_sys->b_handshaked = VLC_FALSE;
 451                 vlc_mutex_unlock ( &p_sys->lock );
 452                 continue;
 453             }
 454
 455             p_buffer_pos = strstr( ( char * ) p_buffer, "OK" );
 456             if ( p_buffer_pos )
 457             {
 458                 if ( p_sys->p_first_queue->i_songs_nb == 10 )
 459                 {
 460                     /* if there are more than one queue, delete the 1st */
 461                     p_first_queue = p_sys->p_first_queue->p_next_queue;
 462                     DeleteQueue( p_sys->p_first_queue );
 463                     free( p_sys->p_first_queue );
 464                     p_sys->p_first_queue = p_first_queue;
 465                 }
 466                 else
 467                 {
 468                     DeleteQueue( p_sys->p_first_queue );
 469                     p_sys->p_first_queue->i_songs_nb = 0;
 470                 }
 471                 msg_Dbg( p_this, "Submission successfull!" );
 472             }
 473             vlc_mutex_unlock ( &p_sys->lock );
 474         } /* data transmission finished or skipped */
 475
 476         msleep( INTF_IDLE_SLEEP );
 477
 478         p_playlist = pl_Yield( p_this );
 479         PL_LOCK;
 480         if( p_playlist->request.i_status == PLAYLIST_STOPPED )
 481         {
 482             PL_UNLOCK;
 483             pl_Release( p_playlist );
 484             /* if we stopped, we won't submit playing song */
 485             vlc_mutex_lock( &p_sys->lock );
 486             p_sys->b_queued = VLC_TRUE;
 487             p_sys->b_metadata_read = VLC_TRUE;
 488             vlc_mutex_unlock( &p_sys->lock );
 489         }
 490         else
 491         {
 492             PL_UNLOCK;
 493             pl_Release( p_playlist );
 494         }
 495
 496         vlc_mutex_lock( &p_sys->lock );
 497         if( p_sys->b_metadata_read == VLC_FALSE )
 498         {
 499             /* we read the metadata of the playing song */
 500             /* TODO: remove when meta_engine works */
 501             time( &played_time );
 502             played_time -= p_sys->p_current_song->time_playing;
 503             played_time -= p_sys->time_total_pauses;
 504
 505             vlc_mutex_unlock( &p_sys->lock );
 506
 507             /* TODO: remove when meta_engine works */
 508             if( played_time > 10 )
 509             {
 510                 if ( ReadMetaData( p_this ) == VLC_ENOMEM )
 511                 {
 512                     msg_Err( p_this, "Out of memory" );
 513                     return;
 514                 }
 515             }
 516         }
 517         else
 518         {
 519             /* we add the playing song into the queue */
 520             if( ( p_sys->b_queued == VLC_FALSE )
 521                 && ( p_sys->b_paused == VLC_FALSE ) )
 522             {
 523                 vlc_mutex_unlock( &p_sys->lock );
 524                 if( AddToQueue( p_this ) == VLC_ENOMEM )
 525                 {
 526                     msg_Err( p_this, "Out of memory" );
 527                     return;
 528                 }
 529             }
 530             else
 531             {
 532                 vlc_mutex_unlock( &p_sys->lock );
 533             }
 534         }
 535     }
 536 }
 537
 538 /*****************************************************************************
 539  * PlayingChange: Playing status change callback
 540  *****************************************************************************/
 541 static int PlayingChange( vlc_object_t *p_this, const char *psz_var,
 542                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 543 {
 544     intf_thread_t *p_intf = ( intf_thread_t* ) p_data;
 545     intf_sys_t *p_sys = p_intf->p_sys;
 546
 547     (void)p_this; (void)psz_var; (void)oldval;
 548
 549     vlc_mutex_lock( &p_sys->lock );
 550
 551     if( newval.i_int == PAUSE_S )
 552     {
 553         time( &p_sys->time_pause );
 554         p_sys->b_paused = VLC_TRUE;
 555     }
 556
 557     if( newval.i_int == PLAYING_S )
 558     {
 559         p_sys->time_total_pauses += time( NULL ) - p_sys->time_pause;
 560         p_sys->b_paused = VLC_FALSE;
 561     }
 562
 563     vlc_mutex_unlock( &p_sys->lock );
 564
 565     return VLC_SUCCESS;
 566 }
 567
 568 /*****************************************************************************
 569  * ItemChange: Playlist item change callback
 570  *****************************************************************************/
 571 static int ItemChange( vlc_object_t *p_this, const char *psz_var,
 572                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 573 {
 574     playlist_t          *p_playlist;
 575     input_thread_t      *p_input = NULL;
 576     time_t              epoch;
 577     struct tm           *epoch_tm;
 578     char                psz_date[20];
 579
 580     (void)p_this; (void)psz_var; (void)oldval; (void)newval;
 581
 582     intf_thread_t *p_intf = ( intf_thread_t* ) p_data;
 583     intf_sys_t *p_sys = p_intf->p_sys;
 584
 585     p_playlist = pl_Yield( p_intf );
 586     PL_LOCK;
 587     p_input = p_playlist->p_input;
 588
 589     if( !p_input )
 590     {
 591         PL_UNLOCK;
 592         pl_Release( p_playlist );
 593         vlc_mutex_lock( &p_sys->lock );
 594
 595         /* we won't read p_input */
 596         p_sys->b_queued = VLC_TRUE;
 597         p_sys->b_metadata_read = VLC_TRUE;
 598
 599         vlc_mutex_unlock( &p_sys->lock );
 600         return VLC_SUCCESS;
 601     }
 602
 603     vlc_object_yield( p_input );
 604     PL_UNLOCK;
 605     pl_Release( p_playlist );
 606
 607     var_AddCallback( p_input, "state", PlayingChange, p_intf );
 608
 609     vlc_mutex_lock ( &p_sys->lock );
 610
 611     /* reset pause counter */
 612     p_sys->time_total_pauses = 0;
 613
 614     /* we'll read metadata when it's present */
 615     p_sys->b_metadata_read = VLC_FALSE;
 616     p_sys->b_waiting_meta = VLC_FALSE;
 617
 618     time( &epoch );
 619     epoch_tm = gmtime( &epoch );
 620     snprintf( psz_date, 20, "%.4d-%.2d-%.2d %.2d:%.2d:%.2d",
 621         epoch_tm->tm_year+1900, epoch_tm->tm_mon+1, epoch_tm->tm_mday,
 622         epoch_tm->tm_hour, epoch_tm->tm_min, epoch_tm->tm_sec );
 623
 624     p_sys->p_current_song->psz_i = encode_URI_component( psz_date );
 625     p_sys->p_current_song->time_playing = epoch;
 626
 627     p_sys->b_paused = ( p_input->b_dead || !p_input->input.p_item->psz_name )
 628                       ? VLC_TRUE : VLC_FALSE;
 629
 630     vlc_mutex_unlock( &p_sys->lock );
 631
 632     vlc_object_release( p_input );
 633     return VLC_SUCCESS;
 634 }
 635
 636 /*****************************************************************************
 637  * AddToQueue: Add the played song to the queue to be submitted
 638  *****************************************************************************/
 639 static int AddToQueue ( intf_thread_t *p_this )
 640 {
 641     int                         i_songs_nb;
 642     time_t                      played_time;
 643     audioscrobbler_queue_t      *p_queue = NULL, *p_next_queue = NULL;
 644
 645     intf_sys_t *p_sys = p_this->p_sys;
 646
 647     /* wait for the user to listen enough before submitting */
 648     time ( &played_time );
 649     played_time -= p_sys->p_current_song->time_playing;
 650     played_time -= p_sys->time_total_pauses;
 651
 652     vlc_mutex_lock( &p_sys->lock );
 653     if( ( played_time < 240 )
 654         && ( played_time < ( p_sys->p_current_song->i_l / 2 ) ) )
 655     {
 656         vlc_mutex_unlock ( &p_sys->lock );
 657         return VLC_SUCCESS;
 658     }
 659
 660     if( p_sys->p_current_song->i_l < 30 )
 661     {
 662         msg_Dbg( p_this, "Song too short (< 30s) -> not submitting" );
 663         p_sys->b_queued = VLC_TRUE;
 664         vlc_mutex_unlock ( &p_sys->lock );
 665         return VLC_SUCCESS;
 666     }
 667
 668     if( !*p_sys->p_current_song->psz_a || !*p_sys->p_current_song->psz_t )
 669     {
 670         msg_Dbg( p_this, "Missing artist or title -> not submitting" );
 671         p_sys->b_queued = VLC_TRUE;
 672         vlc_mutex_unlock ( &p_sys->lock );
 673         return VLC_SUCCESS;
 674     }
 675
 676     msg_Dbg( p_this, "Ok. We'll put it in the queue for submission" );
 677
 678     /* go to last queue */
 679     p_queue = p_sys->p_first_queue;
 680     while( ( p_queue->i_songs_nb == 10 ) && ( p_queue->p_next_queue != NULL ) )
 681     {
 682         p_queue = p_queue->p_next_queue;
 683     }
 684
 685     i_songs_nb = p_queue->i_songs_nb;
 686
 687     if( i_songs_nb == 10 )
 688     {
 689         p_next_queue = malloc( sizeof( audioscrobbler_queue_t ) );
 690         if( !p_next_queue )
 691         {
 692             vlc_mutex_unlock ( &p_sys->lock );
 693             return VLC_ENOMEM;
 694         }
 695         p_queue->p_next_queue = p_next_queue;
 696         i_songs_nb = 0;
 697         p_queue = p_next_queue;
 698         p_queue->i_songs_nb = i_songs_nb;
 699     }
 700
 701     p_queue->p_queue[i_songs_nb] = malloc( sizeof( audioscrobbler_song_t ) );
 702
 703     p_queue->p_queue[i_songs_nb]->i_l = p_sys->p_current_song->i_l;
 704
 705     p_queue->p_queue[i_songs_nb]->psz_a =
 706         strdup( p_sys->p_current_song->psz_a );
 707
 708     p_queue->p_queue[i_songs_nb]->psz_t =
 709         strdup( p_sys->p_current_song->psz_t );
 710
 711     p_queue->p_queue[i_songs_nb]->psz_b =
 712         strdup( p_sys->p_current_song->psz_b );
 713
 714     p_queue->p_queue[i_songs_nb]->psz_i =
 715         strdup( p_sys->p_current_song->psz_i );
 716
 717     p_queue->i_songs_nb++;
 718     p_sys->b_queued = VLC_TRUE;
 719
 720     vlc_mutex_unlock( &p_sys->lock );
 721
 722     return VLC_SUCCESS;
 723 }
 724
 725 /*****************************************************************************
 726  * Handshake : Init audioscrobbler connection
 727  *****************************************************************************/
 728 static int Handshake( intf_thread_t *p_this )
 729 {
 730     char                *psz_password = NULL;
 731     struct md5_s        *p_struct_md5 = NULL;
 732     char                *psz_password_md5 = NULL;
 733     char                *ps_challenge_md5 = NULL;
 734
 735     stream_t            *p_stream;
 736     char                *psz_handshake_url = NULL;
 737
 738     uint8_t             *p_buffer = NULL;
 739     char                *p_buffer_pos = NULL;
 740     char                *psz_buffer_substring = NULL;
 741     char                *psz_url_parser = NULL;
 742     int                 i_url_pos, i;
 743
 744     intf_thread_t *p_intf = ( intf_thread_t* ) p_this;
 745     intf_sys_t *p_sys = p_this->p_sys;
 746
 747     vlc_mutex_lock ( &p_sys->lock );
 748
 749     p_sys->psz_username = config_GetPsz(p_this, "lastfm-username");
 750     if ( !p_sys->psz_username )
 751     {
 752         goto memerror;
 753     }
 754
 755     if ( !*p_sys->psz_username )
 756     {
 757         return VLC_ENOVAR;
 758     }
 759
 760     psz_handshake_url = malloc( 1024 );
 761     if ( !psz_handshake_url )
 762     {
 763         goto memerror;
 764     }
 765
 766     snprintf( psz_handshake_url, 1024,
 767         "http://post.audioscrobbler.com/?hs=true&p=1.1&c=%s&v=%s&u=%s",
 768         CLIENT_NAME, CLIENT_VERSION, p_sys->psz_username );
 769
 770     /* send the http handshake request */
 771     p_stream = stream_UrlNew( p_intf, psz_handshake_url);
 772
 773     free( psz_handshake_url );
 774
 775     if( !p_stream )
 776     {
 777         vlc_mutex_unlock ( &p_sys->lock );
 778         return VLC_EGENERIC;
 779     }
 780
 781     p_buffer = ( uint8_t* ) calloc( 1, 1024 );
 782     if ( !p_buffer )
 783     {
 784         stream_Delete( p_stream );
 785         goto memerror;
 786     }
 787
 788     /* read answer */
 789     if ( stream_Read( p_stream, p_buffer, 1024 ) == 0 )
 790     {
 791         stream_Delete( p_stream );
 792         goto generic_error;
 793     }
 794
 795     stream_Delete( p_stream );
 796
 797     /* record interval before next submission */
 798     p_buffer_pos = strstr( ( char * ) p_buffer, "INTERVAL" );
 799     if ( p_buffer_pos )
 800     {
 801         p_sys->i_interval = atoi( p_buffer_pos + strlen( "INTERVAL " ) );
 802         time( &p_sys->time_last_interval );
 803     }
 804
 805     p_buffer_pos = strstr( ( char * ) p_buffer, "FAILED" );
 806     if ( p_buffer_pos )
 807     {
 808         /* handshake request failed */
 809         msg_Dbg( p_this, p_buffer_pos );
 810         goto generic_error;
 811     }
 812
 813     p_buffer_pos = strstr( ( char * ) p_buffer, "BADUSER" );
 814     if ( p_buffer_pos )
 815     {
 816         /* username does not exist */
 817         intf_UserFatal( p_this, VLC_FALSE, _("Bad last.fm Username"),
 818             _("last.fm username is incorrect, please verify your settings")
 819         );
 820         goto generic_error;
 821     }
 822
 823     p_buffer_pos = strstr( ( char * ) p_buffer, "UPDATE" );
 824     if ( p_buffer_pos )
 825     {
 826         /* protocol has been updated, developers need to work :) */
 827         msg_Dbg( p_intf, "Protocol updated" );
 828         msg_Dbg( p_intf, p_buffer_pos );
 829     }
 830
 831     else
 832     {
 833         p_buffer_pos = strstr( ( char * ) p_buffer, "UPTODATE" );
 834         if ( !p_buffer_pos )
 835         {
 836             msg_Dbg( p_intf, "Protocol error" );
 837             goto generic_error;
 838         }
 839     }
 840
 841     psz_buffer_substring = strndup( strstr( p_buffer_pos, "\n" ) + 1, 32 );
 842     if ( !psz_buffer_substring )
 843     {
 844         goto memerror;
 845     }
 846     else
 847     {
 848         ps_challenge_md5 = malloc( sizeof( char ) * 32 );
 849         if ( !ps_challenge_md5 )
 850         {
 851             goto memerror;
 852         }
 853         memcpy( ps_challenge_md5, psz_buffer_substring, 32 );
 854         free( psz_buffer_substring );
 855     }
 856
 857     p_buffer_pos = ( void* ) strstr( ( char* ) p_buffer, "http://" );
 858
 859     free( p_sys->psz_submit_host );
 860     free( p_sys->psz_submit_file );
 861
 862     psz_url_parser = p_buffer_pos + strlen( "http://" );
 863
 864     i_url_pos = strcspn( psz_url_parser, ":" );
 865     p_sys->psz_submit_host = strndup( psz_url_parser, i_url_pos );
 866
 867     p_sys->i_submit_port = atoi( psz_url_parser + i_url_pos + 1 );
 868
 869     psz_url_parser += strcspn( psz_url_parser , "/" ) + 1;
 870     i_url_pos = strcspn( psz_url_parser, "\n" );
 871     p_sys->psz_submit_file = strndup( psz_url_parser, i_url_pos );
 872
 873     free(p_buffer);
 874
 875     p_struct_md5 = malloc( sizeof( struct md5_s ) );
 876     if( !p_struct_md5 )
 877     {
 878         goto memerror;
 879     }
 880
 881     psz_password = config_GetPsz(p_this, "lastfm-password");
 882     if ( !psz_password )
 883     {
 884          goto memerror;
 885     }
 886
 887     /* generates a md5 hash of the password */
 888     InitMD5( p_struct_md5 );
 889     AddMD5( p_struct_md5, ( uint8_t* ) psz_password, strlen( psz_password ) );
 890     EndMD5( p_struct_md5 );
 891
 892     free( psz_password );
 893
 894     psz_password_md5 = malloc ( 33 * sizeof( char ) );
 895     if ( !psz_password_md5 )
 896     {
 897         goto memerror;
 898     }
 899
 900     for ( i = 0; i < 4; i++ )
 901     {
 902         sprintf( &psz_password_md5[8*i], "%02x%02x%02x%02x",
 903             p_struct_md5->p_digest[i] & 0xff,
 904             ( p_struct_md5->p_digest[i] >> 8 ) & 0xff,
 905             ( p_struct_md5->p_digest[i] >> 16 ) & 0xff,
 906             p_struct_md5->p_digest[i] >> 24
 907         );
 908     }
 909
 910     /* generates a md5 hash of :
 911      * - md5 hash of the password
 912      * - md5 challenge sent by last.fm server
 913      */
 914     InitMD5( p_struct_md5 );
 915     AddMD5( p_struct_md5, ( uint8_t* ) psz_password_md5, 32 );
 916     AddMD5( p_struct_md5, ( uint8_t* ) ps_challenge_md5, 32 );
 917     EndMD5( p_struct_md5 );
 918
 919     free( ps_challenge_md5 );
 920     free( psz_password_md5 );
 921
 922     for ( i = 0; i < 4; i++ )
 923     {
 924         sprintf( &p_sys->psz_response_md5[8*i], "%02x%02x%02x%02x",
 925             p_struct_md5->p_digest[i] & 0xff,
 926             ( p_struct_md5->p_digest[i] >> 8 ) & 0xff,
 927             ( p_struct_md5->p_digest[i] >> 16 ) & 0xff,
 928             p_struct_md5->p_digest[i] >> 24
 929         );
 930     }
 931
 932     p_sys->psz_response_md5[32] = 0;
 933
 934     vlc_mutex_unlock ( &p_sys->lock );
 935
 936     return VLC_SUCCESS;
 937
 938 generic_error:
 939     free( p_buffer );
 940     vlc_mutex_unlock( &p_sys->lock );
 941     return VLC_EGENERIC;
 942
 943 memerror:
 944     free( p_buffer );
 945     free( p_struct_md5 );
 946     free( psz_buffer_substring );
 947
 948     vlc_mutex_unlock( &p_sys->lock );
 949     return VLC_ENOMEM;
 950 }
 951
 952 /*****************************************************************************
 953  * DeleteQueue : Free all songs from an audioscrobbler_queue_t
 954  *****************************************************************************/
 955 void DeleteQueue( audioscrobbler_queue_t *p_queue )
 956 {
 957     int     i;
 958
 959     for( i = 0; i < p_queue->i_songs_nb; i++ )
 960     {
 961         free( p_queue->p_queue[i]->psz_a );
 962         free( p_queue->p_queue[i]->psz_b );
 963         free( p_queue->p_queue[i]->psz_t );
 964         free( p_queue->p_queue[i]->psz_i );
 965         free( p_queue->p_queue[i] );
 966     }
 967 }
 968
 969 /*****************************************************************************
 970  * ReadMetaData : Read meta data when parsed by vlc
 971  * or wait for fetching if unavailable
 972  *****************************************************************************/
 973 static int ReadMetaData( intf_thread_t *p_this )
 974 {
 975     playlist_t          *p_playlist;
 976     input_thread_t      *p_input = NULL;
 977     vlc_value_t         video_val;
 978
 979     intf_sys_t *p_sys = p_this->p_sys;
 980
 981     p_playlist = pl_Yield( p_this );
 982     PL_LOCK;
 983     p_input = p_playlist->p_input;
 984
 985     if( !p_input )
 986     {
 987         PL_UNLOCK;
 988         pl_Release( p_playlist );
 989         return( VLC_SUCCESS );
 990     }
 991
 992     vlc_object_yield( p_input );
 993     PL_UNLOCK;
 994     pl_Release( p_playlist );
 995
 996     var_Change( p_input, "video-es", VLC_VAR_CHOICESCOUNT, &video_val, NULL );
 997     if( ( video_val.i_int > 0 ) || \
 998         ( p_input->input.p_item->i_type == ITEM_TYPE_NET ) )
 999     {
1000         msg_Dbg( p_this, "Not an audio file -> no submission");
1001         vlc_object_release( p_input );
1002
1003         vlc_mutex_lock( &p_sys->lock );
1004         p_sys->b_queued = VLC_TRUE;
1005         p_sys->b_metadata_read = VLC_TRUE;
1006         vlc_mutex_unlock( &p_sys->lock );
1007
1008         return VLC_SUCCESS;
1009     }
1010
1011     return ReadLocalMetaData( p_this, p_input );
1012 }
1013
1014 /*****************************************************************************
1015  * ReadLocalMetaData : Puts current song's meta data in p_sys->p_current_song
1016  *****************************************************************************/
1017 static int ReadLocalMetaData( intf_thread_t *p_this, input_thread_t  *p_input )
1018 {
1019     char                *psz_title = NULL;
1020     char                *psz_artist = NULL;
1021     char                *psz_album = NULL;
1022     int                 i_length = -1;
1023     vlc_bool_t          b_waiting;
1024     int                 i_status;
1025
1026     intf_sys_t *p_sys = p_this->p_sys;
1027
1028     i_status = p_input->input.p_item->p_meta->i_status;
1029
1030     vlc_mutex_lock( &p_sys->lock );
1031     b_waiting = p_sys->b_waiting_meta;
1032     vlc_mutex_unlock( &p_sys->lock );
1033
1034     /* TODO : remove if (1) when meta_engine works */
1035     if ( (1/*( i_status & ITEM_PREPARSED )*/&& ( b_waiting == VLC_FALSE ) ) || \
1036         ( ( i_status & ITEM_META_FETCHED ) && ( b_waiting == VLC_TRUE ) ) )
1037     {
1038         if ( p_input->input.p_item->p_meta->psz_artist )
1039         {
1040             psz_artist = encode_URI_component(
1041                 p_input->input.p_item->p_meta->psz_artist );
1042             if ( !psz_artist )
1043             {
1044                 goto error;
1045             }
1046         }
1047         else
1048         {
1049             msg_Dbg( p_this, "No artist.." );
1050             if ( b_waiting == VLC_TRUE )
1051             {
1052                 psz_artist = calloc( 1, sizeof( char ) );
1053             }
1054             else
1055             {
1056                 goto waiting_meta_data_fetching;
1057             }
1058         }
1059         if ( p_input->input.p_item->psz_name )
1060         {
1061             psz_title = encode_URI_component( p_input->input.p_item->psz_name );
1062             if ( !psz_title )
1063             {
1064                 goto error;
1065             }
1066         }
1067         else
1068         {
1069             msg_Dbg( p_this, "No track name.." );
1070             if ( b_waiting == VLC_TRUE )
1071             {
1072                 psz_title = calloc( 1, sizeof( char ) );
1073             }
1074             else
1075             {
1076                 goto waiting_meta_data_fetching;
1077             }
1078         }
1079
1080         if ( p_input->input.p_item->p_meta->psz_album )
1081         {
1082             psz_album = encode_URI_component(
1083                 p_input->input.p_item->p_meta->psz_album );
1084             if ( !psz_album )
1085             {
1086                 goto error;
1087             }
1088         }
1089         else
1090         {
1091             psz_album = calloc( 1, sizeof( char ) );
1092         }
1093
1094         i_length = p_input->input.p_item->i_duration / 1000000;
1095
1096         vlc_object_release( p_input );
1097
1098         vlc_mutex_lock ( &p_sys->lock );
1099
1100         p_sys->p_current_song->psz_a = strdup( psz_artist );
1101         p_sys->p_current_song->psz_t = strdup( psz_title );
1102         p_sys->p_current_song->psz_b = strdup( psz_album );
1103         p_sys->p_current_song->i_l = i_length;
1104         p_sys->b_queued = VLC_FALSE;
1105         p_sys->b_metadata_read = VLC_TRUE;
1106
1107         vlc_mutex_unlock ( &p_sys->lock );
1108
1109         msg_Dbg( p_this, "Meta data registered, waiting to be queued" );
1110
1111         free( psz_title );
1112         free( psz_artist );
1113         free( psz_album );
1114
1115         return VLC_SUCCESS;
1116     }
1117
1118     return VLC_SUCCESS;
1119
1120 waiting_meta_data_fetching:
1121     vlc_object_release( p_input );
1122
1123     vlc_mutex_lock( &p_sys->lock );
1124     p_sys->b_waiting_meta = VLC_TRUE;
1125     vlc_mutex_unlock( &p_sys->lock );
1126
1127     free( psz_artist );
1128     free( psz_album );
1129     free( psz_title );
1130
1131     return VLC_SUCCESS;
1132
1133 error:
1134     vlc_object_release( p_input );
1135
1136     free( psz_artist );
1137     free( psz_album );
1138     free( psz_title );
1139     return VLC_ENOMEM;
1140 }