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( strlwr ) && !defined( WIN32 )
  33 #include <ctype.h>
  34 #endif
  35
  36 #if defined( WIN32 )
  37 #include <time.h>
  38 #endif
  39 /*
  40  * TODO :
  41  * implement musicbrainz unique track identifier in p_meta
  42  * check meta_engine's state, and remove delaying of metadata reading
  43  * check md5 operations on BIGENDIAN and 64 bits architectures
  44  */
  45 #include <vlc/vlc.h>
  46 #include <vlc/intf.h>
  47 #include <vlc_meta.h>
  48 #include <vlc_md5.h>
  49 #include <vlc_block.h>
  50 #include <vlc_stream.h>
  51 #include <vlc_url.h>
  52 #include <network.h>
  53 #include <vlc_interaction.h>
  54
  55 /*****************************************************************************
  56  * Local prototypes
  57  *****************************************************************************/
  58
  59 /* Keeps track of metadata to be submitted, and if song has been submitted */
  60 typedef struct audioscrobbler_song_t
  61 {
  62     char        *psz_a;                /* track artist     */
  63     char        *psz_t;                /* track title      */
  64     char        *psz_b;                /* track album      */
  65     int         i_l;                   /* track length     */
  66 /* vlc can't retrieve musicbrainz id, so let's ignore it   */
  67 /*  int         i_m;  */               /* musicbrainz id   */
  68     char        *psz_i;                /* date             */
  69     time_t      time_playing;          /* date (epoch)     */
  70 } audioscrobbler_song_t;
  71
  72
  73 /* Queue to be submitted to server, 10 songs max */
  74 typedef struct audioscrobbler_queue_t
  75 {
  76     audioscrobbler_song_t   **p_queue;      /* contains up to 10 songs        */
  77     int                     i_songs_nb;     /* number of songs                */
  78     void                    *p_next_queue;  /* if queue full, pointer to next */
  79 } audioscrobbler_queue_t;
  80
  81 struct intf_sys_t
  82 {
  83     audioscrobbler_queue_t  *p_first_queue;     /* 1st queue              */
  84     vlc_mutex_t             lock;               /* p_sys mutex            */
  85
  86 /* data about audioscrobbler session */
  87     int                     i_interval;         /* last interval recorded */
  88     time_t                  time_last_interval; /* when was it recorded ? */
  89     char                    *psz_submit_host;   /* where to submit data ? */
  90     int                     i_submit_port;      /* at which port ?        */
  91     char                    *psz_submit_file;   /* in which file ?        */
  92     char                    *psz_username;      /* last.fm username       */
  93     vlc_bool_t              b_handshaked;       /* did we handshake ?     */
  94     int                     i_post_socket;      /* socket for submission  */
  95     char                    *psz_response_md5;  /* md5 response to use    */
  96
  97 /* data about input elements */
  98     audioscrobbler_song_t   *p_current_song;    /* song being played      */
  99     time_t                  time_pause;         /* time when vlc paused   */
 100     time_t                  time_total_pauses;  /* sum of time in pause   */
 101     vlc_bool_t              b_queued;           /* has it been queud ?    */
 102     vlc_bool_t              b_metadata_read;    /* did we read metadata ? */
 103     vlc_bool_t              b_paused;           /* are we playing ?       */
 104     vlc_bool_t              b_waiting_meta;     /* we need fetched data?  */
 105 };
 106
 107 intf_sys_t *p_sys_global;     /* for use same p_sys in all threads */
 108
 109 static int  Open    ( vlc_object_t * );
 110 static void Close   ( vlc_object_t * );
 111 static void Run     ( intf_thread_t * );
 112 static int ItemChange   ( vlc_object_t *, const char *,
 113                         vlc_value_t, vlc_value_t, void * );
 114 static int PlayingChange( vlc_object_t *, const char *,
 115                         vlc_value_t, vlc_value_t, void * );
 116 static int AddToQueue   ( intf_thread_t *p_this );
 117 static int Handshake    ( intf_thread_t *p_sd );
 118 static int ReadMetaData ( intf_thread_t *p_this );
 119 static int ReadLocalMetaData( intf_thread_t *p_this, input_thread_t  *p_input );
 120 void DeleteQueue( audioscrobbler_queue_t *p_queue );
 121
 122 #if !defined(strlwr) && !defined( WIN32 )
 123 char* strlwr(char *psz_string);
 124 #endif
 125
 126 /*****************************************************************************
 127  * Module descriptor
 128  ****************************************************************************/
 129
 130
 131 #define APPLICATION_NAME "VLC media player"
 132 #define USERNAME_TEXT N_("Username")
 133 #define USERNAME_LONGTEXT N_("The username of your last.fm account")
 134 #define PASSWORD_TEXT N_("Password")
 135 #define PASSWORD_LONGTEXT N_("The password of your last.fm account")
 136 /* if something goes wrong, we wait at least one minute before trying again */
 137 #define DEFAULT_INTERVAL 60
 138 #define CLIENT_NAME     PACKAGE
 139 #define CLIENT_VERSION  VERSION
 140
 141 /* HTTP POST request : to submit data */
 142 #define    POST_REQUEST "POST /%s HTTP/1.1\n"                               \
 143                         "Accept-Encoding: identity\n"                       \
 144                         "Content-length: %d\n"                              \
 145                         "Connection: close\n"                               \
 146                         "Content-type: application/x-www-form-urlencoded\n" \
 147                         "Host: %s\n"                                        \
 148                         "User-agent: VLC Media Player/%s\r\n"               \
 149                         "\r\n"                                              \
 150                         "%s\r\n"                                            \
 151                         "\r\n"
 152
 153 /* data to submit */
 154 #define POST_DATA "u=%s&s=%s&a%%5B%d%%5D=%s&t%%5B%d%%5D=%s" \
 155                   "&b%%5B%d%%5D=%s&m%%5B%d%%5D=&l%%5B%d%%5D=%d&i%%5B%d%%5D=%s"
 156
 157 vlc_module_begin();
 158     set_category( CAT_INTERFACE );
 159     set_subcategory( SUBCAT_INTERFACE_CONTROL );
 160     set_shortname( N_( "Audioscrobbler" ) );
 161     set_description( N_("Audioscrobbler submission Plugin") );
 162     add_string( "lastfm-username", "", NULL,
 163                 USERNAME_TEXT, USERNAME_LONGTEXT, VLC_FALSE );
 164     add_string( "lastfm-password", "", NULL,
 165                 PASSWORD_TEXT, PASSWORD_LONGTEXT, VLC_FALSE );
 166     set_capability( "interface", 0 );
 167     set_callbacks( Open, Close );
 168 vlc_module_end();
 169
 170 /*****************************************************************************
 171  * Open: initialize and create stuff
 172  *****************************************************************************/
 173
 174 static int Open( vlc_object_t *p_this )
 175 {
 176     playlist_t          *p_playlist;
 177
 178     intf_thread_t *p_intf = ( intf_thread_t* ) p_this;
 179     intf_sys_t *p_sys = malloc( sizeof( intf_sys_t ) );
 180     if( !p_sys )
 181     {
 182       goto error;
 183     }
 184     vlc_mutex_init( p_this, &p_sys->lock );
 185
 186     p_sys_global = p_sys;
 187     p_sys->psz_submit_host = NULL;
 188     p_sys->psz_submit_file = NULL;
 189     p_sys->b_handshaked = VLC_FALSE;
 190     p_sys->i_interval = 0;
 191     p_sys->time_last_interval = time( NULL );
 192     p_sys->psz_username = NULL;
 193     p_sys->b_paused = VLC_FALSE;
 194
 195     /* md5 response is 32 chars, + final \0 */
 196     p_sys->psz_response_md5 = malloc( sizeof( char ) * 33 );
 197     if( !p_sys->psz_response_md5 )
 198     {
 199         vlc_mutex_destroy ( &p_sys->lock );
 200         goto error;
 201    }
 202
 203     p_sys->p_first_queue = malloc( sizeof( audioscrobbler_queue_t ) );
 204     if( !p_sys->p_first_queue )
 205     {
 206         vlc_mutex_destroy( &p_sys->lock );
 207         goto error;
 208     }
 209
 210     p_sys->p_current_song = malloc( sizeof( audioscrobbler_song_t ) );
 211     if( !p_sys->p_current_song )
 212     {
 213         vlc_mutex_destroy( &p_sys->lock );
 214         goto error;
 215     }
 216
 217     /* queues can't contain more than 10 songs */
 218     p_sys->p_first_queue->p_queue =
 219         malloc( 10 * sizeof( audioscrobbler_song_t ) );
 220     if( !p_sys->p_current_song )
 221     {
 222         vlc_mutex_destroy( &p_sys->lock );
 223         goto error;
 224     }
 225
 226     p_sys->p_first_queue->i_songs_nb = 0;
 227     p_sys->p_first_queue->p_next_queue = NULL;
 228
 229     p_playlist = pl_Yield( p_intf );
 230     var_AddCallback( p_playlist, "playlist-current", ItemChange, p_intf );
 231     pl_Release( p_playlist );
 232
 233     p_intf->pf_run = Run;
 234
 235     return VLC_SUCCESS;
 236
 237 error:
 238     free( p_sys->p_current_song );
 239     free( p_sys->p_first_queue );
 240     free( p_sys->psz_response_md5 );
 241     free( p_sys );
 242
 243     return VLC_ENOMEM;
 244 }
 245
 246 /*****************************************************************************
 247  * Close: destroy interface stuff
 248  *****************************************************************************/
 249 static void Close( vlc_object_t *p_this )
 250 {
 251     audioscrobbler_queue_t      *p_current_queue, *p_next_queue;
 252     playlist_t                  *p_playlist;
 253     input_thread_t              *p_input;
 254
 255     intf_thread_t *p_intf = ( intf_thread_t* ) p_this;
 256     intf_sys_t *p_sys = p_intf->p_sys;
 257
 258     p_playlist = pl_Yield( p_intf );
 259     PL_LOCK;
 260     p_input = p_playlist->p_input;
 261     var_DelCallback( p_playlist, "playlist-current", ItemChange, p_intf );
 262
 263     if ( p_input )
 264     {
 265         vlc_object_yield( p_input );
 266         var_DelCallback( p_input, "state", PlayingChange, p_intf );
 267         vlc_object_release( p_input );
 268     }
 269
 270     PL_UNLOCK;
 271     pl_Release( p_playlist );
 272
 273     vlc_mutex_lock ( &p_sys->lock );
 274     p_current_queue = p_sys->p_first_queue;
 275     vlc_mutex_unlock ( &p_sys->lock );
 276
 277     while( ( p_current_queue->i_songs_nb == 10 ) &&
 278         ( p_current_queue->p_next_queue != NULL ) )
 279     {
 280         p_next_queue = p_current_queue->p_next_queue;
 281         DeleteQueue( p_current_queue );
 282         free( p_current_queue );
 283         p_current_queue = p_next_queue;
 284     }
 285
 286     DeleteQueue( p_current_queue );
 287     free( p_current_queue );
 288
 289     vlc_mutex_lock ( &p_sys->lock );
 290     if ( p_sys->psz_username )
 291     {
 292         free( p_sys->psz_username );
 293     }
 294
 295     free( p_sys->p_current_song );
 296     vlc_mutex_unlock ( &p_sys->lock );
 297     vlc_mutex_destroy( &p_sys->lock );
 298     free( p_sys );
 299 }
 300
 301 /*****************************************************************************
 302  * Run : Handshake with audioscrobbler, then submit songs
 303  *****************************************************************************/
 304 static void Run( intf_thread_t *p_this )
 305 {
 306     char                    *psz_submit_string = NULL;
 307     int                     i_handshake;
 308     int                     i_netprintf;
 309     int                     i_song;
 310     playlist_t              *p_playlist;
 311     uint8_t                 *p_buffer = NULL;
 312     char                    *p_buffer_pos = NULL;
 313     audioscrobbler_queue_t  *p_first_queue;
 314     /* TODO: remove when meta_engine works */
 315     time_t                  played_time;
 316
 317     p_this->p_sys = p_sys_global;
 318     intf_sys_t *p_sys = p_this->p_sys;
 319
 320     while( !p_this->b_die )
 321     {
 322
 323         if ( ( p_sys->p_first_queue->i_songs_nb > 0 ) &&
 324             ( time( NULL ) >=
 325             ( p_sys->time_last_interval + p_sys->i_interval )  ) )
 326         {
 327
 328             if( p_sys->b_handshaked == VLC_FALSE )
 329             {
 330                 if ( time( NULL ) >=
 331                     ( p_sys->time_last_interval + p_sys->i_interval ) )
 332                 {
 333                     msg_Dbg( p_this, "Handshaking with last.fm ..." );
 334                     i_handshake = Handshake( p_this );
 335
 336                     if( i_handshake == VLC_ENOMEM )
 337                     {
 338                         msg_Err( p_this, "Out of memory" );
 339                         return;
 340                     }
 341
 342                     else if( i_handshake == VLC_ENOVAR )
 343                     /* username not set */
 344                     {
 345                         vlc_mutex_unlock ( &p_sys->lock );
 346                         intf_UserFatal( p_this, VLC_FALSE,
 347                             _("last.fm username not set"),
 348                             _("You have to set a username,"
 349                             " and then restart VLC.\n"
 350                             "Visit https://www.last.fm/join/"
 351                             " if you don't have one.")
 352                         );
 353                         return;
 354                     }
 355
 356                     else if( i_handshake == VLC_SUCCESS )
 357                     {
 358                         msg_Dbg( p_this, "Handshake successfull :)" );
 359                         vlc_mutex_lock ( &p_sys->lock );
 360                         p_sys->b_handshaked = VLC_TRUE;
 361                         vlc_mutex_unlock ( &p_sys->lock );
 362                     }
 363
 364                     else
 365                     /* VLC_GENERIC : we'll try later */
 366                     {
 367                         vlc_mutex_lock ( &p_sys->lock );
 368                         p_sys->i_interval = DEFAULT_INTERVAL;
 369                         time( &p_sys->time_last_interval );
 370                         vlc_mutex_unlock ( &p_sys->lock );
 371                     }
 372                 }
 373             }
 374
 375
 376             msg_Dbg( p_this, "Going to submit some data..." );
 377             vlc_mutex_lock ( &p_sys->lock );
 378             psz_submit_string = malloc( 2048 * sizeof( char ) );
 379
 380             if (!psz_submit_string)
 381             {
 382                 msg_Err( p_this, "Out of memory" );
 383                 vlc_mutex_unlock ( &p_sys->lock );
 384                 return;
 385             }
 386
 387             for (i_song = 0; i_song < p_sys->p_first_queue->i_songs_nb ;
 388                 i_song++ )
 389             {
 390                 snprintf( psz_submit_string, 2048, POST_DATA,
 391                     p_sys->psz_username, p_sys->psz_response_md5,
 392                     i_song, p_sys->p_first_queue->p_queue[i_song]->psz_a,
 393                     i_song, p_sys->p_first_queue->p_queue[i_song]->psz_t,
 394                     i_song, p_sys->p_first_queue->p_queue[i_song]->psz_b,
 395                     i_song,
 396                     i_song, p_sys->p_first_queue->p_queue[i_song]->i_l,
 397                     i_song, p_sys->p_first_queue->p_queue[i_song]->psz_i
 398                 );
 399             }
 400
 401             p_sys->i_post_socket = net_ConnectTCP( p_this,
 402                 p_sys->psz_submit_host, p_sys->i_submit_port);
 403
 404             i_netprintf = net_Printf(
 405                 VLC_OBJECT(p_this), p_sys->i_post_socket, NULL,
 406                 POST_REQUEST, p_sys->psz_submit_file,
 407                 strlen( psz_submit_string), p_sys->psz_submit_file,
 408                 VERSION, psz_submit_string
 409             );
 410
 411             if ( i_netprintf == -1 )
 412             {
 413                 /* If connection fails, we assume we must handshake again */
 414                 p_sys->i_interval = DEFAULT_INTERVAL;
 415                 time( &p_sys->time_last_interval );
 416                 p_sys->b_handshaked = VLC_FALSE;
 417                 vlc_mutex_unlock ( &p_sys->lock );
 418                 continue;
 419             }
 420
 421             p_buffer = ( uint8_t* ) calloc( 1, 1024 );
 422             if ( !p_buffer )
 423             {
 424                 msg_Err( p_this, "Out of memory" );
 425                 vlc_mutex_unlock ( &p_sys->lock );
 426                 return;
 427             }
 428
 429             net_Read( p_this, p_sys->i_post_socket, NULL,
 430                         p_buffer, 1024, VLC_FALSE );
 431             net_Close( p_sys->i_post_socket );
 432
 433             p_buffer_pos = strstr( ( char * ) p_buffer, "INTERVAL" );
 434
 435             if ( p_buffer_pos )
 436             {
 437                 p_sys->i_interval = atoi( p_buffer_pos +
 438                                             strlen( "INTERVAL " ) );
 439                 time( &p_sys->time_last_interval );
 440             }
 441
 442             p_buffer_pos = strstr( ( char * ) p_buffer, "FAILED" );
 443
 444             if ( p_buffer_pos )
 445             {
 446                 msg_Dbg( p_this, p_buffer_pos );
 447                 vlc_mutex_unlock ( &p_sys->lock );
 448                 continue;
 449             }
 450
 451             p_buffer_pos = strstr( ( char * ) p_buffer, "BADAUTH" );
 452
 453             if ( p_buffer_pos )
 454             {
 455                 msg_Dbg( p_this, "Authentification failed, handshaking again" );
 456                 p_sys->b_handshaked = VLC_FALSE;
 457                 vlc_mutex_unlock ( &p_sys->lock );
 458                 continue;
 459             }
 460
 461             p_buffer_pos = strstr( ( char * ) p_buffer, "OK" );
 462
 463             if ( p_buffer_pos )
 464             {
 465                 if ( p_sys->p_first_queue->i_songs_nb == 10 )
 466                 {
 467                     p_first_queue = p_sys->p_first_queue->p_next_queue;
 468                     DeleteQueue( p_sys->p_first_queue );
 469                     free( p_sys->p_first_queue );
 470                     p_sys->p_first_queue = p_first_queue;
 471                 }
 472                 else
 473                 {
 474                     DeleteQueue( p_sys->p_first_queue );
 475                     p_sys->p_first_queue->i_songs_nb = 0;
 476                 }
 477                 msg_Dbg( p_this, "Submission successfull!" );
 478             }
 479             vlc_mutex_unlock ( &p_sys->lock );
 480         }
 481
 482         msleep( INTF_IDLE_SLEEP );
 483
 484         p_playlist = pl_Yield( p_this );
 485         PL_LOCK;
 486         if( p_playlist->request.i_status == PLAYLIST_STOPPED )
 487         {
 488             PL_UNLOCK;
 489             pl_Release( p_playlist );
 490             /* if we stopped, we won't submit playing song */
 491             vlc_mutex_lock( &p_sys->lock );
 492             p_sys->b_queued = VLC_TRUE;
 493             p_sys->b_metadata_read = VLC_TRUE;
 494             vlc_mutex_unlock( &p_sys->lock );
 495         }
 496         else
 497         {
 498             PL_UNLOCK;
 499             pl_Release( p_playlist );
 500         }
 501
 502         vlc_mutex_lock( &p_sys->lock );
 503         if( p_sys->b_metadata_read == VLC_FALSE )
 504         {
 505             /* TODO: remove when meta_engine works */
 506             time( &played_time );
 507             played_time -= p_sys->p_current_song->time_playing;
 508             played_time -= p_sys->time_total_pauses;
 509
 510             vlc_mutex_unlock( &p_sys->lock );
 511
 512             /* TODO: remove when meta_engine works */
 513             if( played_time > 10 )
 514             {
 515                 if ( ReadMetaData( p_this ) == VLC_ENOMEM )
 516                 {
 517                     msg_Err( p_this, "Out of memory" );
 518                     return;
 519                 }
 520             }
 521         }
 522         else
 523         {
 524             if( ( p_sys->b_queued == VLC_FALSE )
 525                 && ( p_sys->b_paused == VLC_FALSE ) )
 526             {
 527                 vlc_mutex_unlock( &p_sys->lock );
 528                 if( AddToQueue( p_this ) == VLC_ENOMEM )
 529                 {
 530                     msg_Err( p_this, "Out of memory" );
 531                     return;
 532                 }
 533             }
 534             else
 535             {
 536                 vlc_mutex_unlock( &p_sys->lock );
 537             }
 538         }
 539     }
 540 }
 541
 542 /*****************************************************************************
 543  * PlayingChange: Playing status change callback
 544  *****************************************************************************/
 545 static int PlayingChange( vlc_object_t *p_this, const char *psz_var,
 546                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 547 {
 548     intf_thread_t *p_intf = ( intf_thread_t* ) p_data;
 549     intf_sys_t *p_sys = p_intf->p_sys;
 550
 551     (void)p_this; (void)psz_var; (void)oldval;
 552
 553     vlc_mutex_lock( &p_sys->lock );
 554
 555     if( newval.i_int == PAUSE_S )
 556     {
 557         time( &p_sys->time_pause );
 558         p_sys->b_paused = VLC_TRUE;
 559     }
 560
 561     if( newval.i_int == PLAYING_S )
 562     {
 563         p_sys->time_total_pauses += time( NULL ) - p_sys->time_pause;
 564         p_sys->b_paused = VLC_FALSE;
 565     }
 566
 567     vlc_mutex_unlock( &p_sys->lock );
 568
 569     return VLC_SUCCESS;
 570 }
 571
 572 /*****************************************************************************
 573  * ItemChange: Playlist item change callback
 574  *****************************************************************************/
 575 static int ItemChange( vlc_object_t *p_this, const char *psz_var,
 576                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 577 {
 578     playlist_t          *p_playlist;
 579     input_thread_t      *p_input = NULL;
 580     time_t              epoch;
 581     struct tm           *epoch_tm;
 582     char                psz_date[20];
 583
 584     (void)p_this; (void)psz_var; (void)oldval; (void)newval;
 585
 586     intf_thread_t *p_intf = ( intf_thread_t* ) p_data;
 587     intf_sys_t *p_sys = p_intf->p_sys;
 588
 589     p_playlist = pl_Yield( p_intf );
 590     PL_LOCK;
 591     p_input = p_playlist->p_input;
 592
 593     if( !p_input )
 594     {
 595         PL_UNLOCK;
 596         pl_Release( p_playlist );
 597         vlc_mutex_lock( &p_sys->lock );
 598
 599         /* we won't read p_input */
 600         p_sys->b_queued = VLC_TRUE;
 601         p_sys->b_metadata_read = VLC_TRUE;
 602
 603         vlc_mutex_unlock( &p_sys->lock );
 604         return VLC_SUCCESS;
 605     }
 606
 607     vlc_object_yield( p_input );
 608     PL_UNLOCK;
 609     pl_Release( p_playlist );
 610
 611     var_AddCallback( p_input, "state", PlayingChange, p_intf );
 612
 613     vlc_mutex_lock ( &p_sys->lock );
 614
 615     /* reset pause counter */
 616     p_sys->time_total_pauses = 0;
 617
 618     /* we'll read metadata when it's present */
 619     p_sys->b_metadata_read = VLC_FALSE;
 620     p_sys->b_waiting_meta = VLC_FALSE;
 621     p_sys->b_queued = VLC_TRUE;
 622
 623     time( &epoch );
 624     epoch_tm = gmtime( &epoch );
 625     snprintf( psz_date, 20, "%.4d-%.2d-%.2d %.2d:%.2d:%.2d",
 626         epoch_tm->tm_year+1900, epoch_tm->tm_mon+1, epoch_tm->tm_mday,
 627         epoch_tm->tm_hour, epoch_tm->tm_min, epoch_tm->tm_sec );
 628
 629     p_sys->p_current_song->psz_i = encode_URI_component( psz_date );
 630     p_sys->p_current_song->time_playing = epoch;
 631
 632     p_sys->b_paused = ( p_input->b_dead || !p_input->input.p_item->psz_name )
 633                       ? VLC_TRUE : VLC_FALSE;
 634
 635     vlc_mutex_unlock( &p_sys->lock );
 636
 637     vlc_object_release( p_input );
 638     return VLC_SUCCESS;
 639 }
 640
 641 /*****************************************************************************
 642  * AddToQueue: Add the played song to the queue to be submitted
 643  *****************************************************************************/
 644 static int AddToQueue ( intf_thread_t *p_this )
 645 {
 646     int                         i_songs_nb;
 647     time_t                      played_time;
 648     audioscrobbler_queue_t      *p_queue = NULL, *p_next_queue = NULL;
 649
 650     intf_sys_t *p_sys = p_this->p_sys;
 651
 652     /* wait for the user to listen enough before submitting */
 653     time ( &played_time );
 654     played_time -= p_sys->p_current_song->time_playing;
 655     played_time -= p_sys->time_total_pauses;
 656
 657     vlc_mutex_lock( &p_sys->lock );
 658     if( ( played_time < 240 )
 659         && ( played_time < ( p_sys->p_current_song->i_l / 2 ) ) )
 660     {
 661         vlc_mutex_unlock ( &p_sys->lock );
 662         return VLC_SUCCESS;
 663     }
 664
 665     if( p_sys->p_current_song->i_l < 30 )
 666     {
 667         msg_Dbg( p_this, "Song too short (< 30s) -> not submitting" );
 668         p_sys->b_queued = VLC_TRUE;
 669         vlc_mutex_unlock ( &p_sys->lock );
 670         return VLC_SUCCESS;
 671     }
 672
 673     if( !*p_sys->p_current_song->psz_a || !*p_sys->p_current_song->psz_t )
 674     {
 675         msg_Dbg( p_this, "Missing artist or title -> not submitting" );
 676         p_sys->b_queued = VLC_TRUE;
 677         vlc_mutex_unlock ( &p_sys->lock );
 678         return VLC_SUCCESS;
 679     }
 680
 681     msg_Dbg( p_this, "Ok. We'll put it in the queue for submission" );
 682
 683     /* go to last queue */
 684     p_queue = p_sys->p_first_queue;
 685     while( ( p_queue->i_songs_nb == 10 ) && ( p_queue->p_next_queue != NULL ) )
 686     {
 687         p_queue = p_queue->p_next_queue;
 688     }
 689
 690     i_songs_nb = p_queue->i_songs_nb;
 691
 692     if( i_songs_nb == 10 )
 693     {
 694         p_next_queue = malloc( sizeof( audioscrobbler_queue_t ) );
 695         if( !p_next_queue )
 696         {
 697             vlc_mutex_unlock ( &p_sys->lock );
 698             return VLC_ENOMEM;
 699         }
 700         p_queue->p_next_queue = p_next_queue;
 701         i_songs_nb = 0;
 702         p_queue = p_next_queue;
 703         p_queue->i_songs_nb = i_songs_nb;
 704     }
 705
 706     p_queue->p_queue[i_songs_nb] = malloc( sizeof( audioscrobbler_song_t ) );
 707
 708     p_queue->p_queue[i_songs_nb]->i_l = p_sys->p_current_song->i_l;
 709
 710     p_queue->p_queue[i_songs_nb]->psz_a =
 711         strdup( p_sys->p_current_song->psz_a );
 712
 713     p_queue->p_queue[i_songs_nb]->psz_t =
 714         strdup( p_sys->p_current_song->psz_t );
 715
 716     p_queue->p_queue[i_songs_nb]->psz_b =
 717         strdup( p_sys->p_current_song->psz_b );
 718
 719     p_queue->p_queue[i_songs_nb]->psz_i =
 720         strdup( p_sys->p_current_song->psz_i );
 721
 722     p_queue->i_songs_nb++;
 723     p_sys->b_queued = VLC_TRUE;
 724
 725     vlc_mutex_unlock( &p_sys->lock );
 726
 727     return VLC_SUCCESS;
 728 }
 729
 730 /*****************************************************************************
 731  * Handshake : Init audioscrobbler connection
 732  *****************************************************************************/
 733 static int Handshake( intf_thread_t *p_this )
 734 {
 735     char                *psz_password = NULL;
 736     struct md5_s        *p_struct_md5 = NULL;
 737     char                *psz_password_md5 = NULL;
 738     char                *ps_challenge_md5 = NULL;
 739
 740     stream_t            *p_stream;
 741     char                *psz_handshake_url = NULL;
 742
 743     uint8_t             *p_buffer = NULL;
 744     char                *p_buffer_pos = NULL;
 745     char                *psz_buffer_substring = NULL;
 746     char                *psz_url_parser = NULL;
 747     int                 i_url_pos, i;
 748
 749     intf_thread_t *p_intf = ( intf_thread_t* ) p_this;
 750     intf_sys_t *p_sys = p_this->p_sys;
 751
 752     vlc_mutex_lock ( &p_sys->lock );
 753
 754     p_sys->psz_username = config_GetPsz(p_this, "lastfm-username");
 755     if ( !p_sys->psz_username )
 756     {
 757         goto memerror;
 758     }
 759
 760
 761     if ( !*p_sys->psz_username )
 762     {
 763         return VLC_ENOVAR;
 764     }
 765
 766     psz_handshake_url = malloc( 1024 );
 767     if ( !psz_handshake_url )
 768     {
 769         goto memerror;
 770     }
 771
 772     snprintf( psz_handshake_url, 1024,
 773         "http://post.audioscrobbler.com/?hs=true&p=1.1&c=%s&v=%s&u=%s",
 774         CLIENT_NAME, CLIENT_VERSION, p_sys->psz_username );
 775
 776     p_stream = stream_UrlNew( p_intf, psz_handshake_url);
 777
 778     free( psz_handshake_url );
 779
 780     if( !p_stream )
 781     {
 782         vlc_mutex_unlock ( &p_sys->lock );
 783         return VLC_EGENERIC;
 784     }
 785
 786     p_buffer = ( uint8_t* ) calloc( 1, 1024 );
 787     if ( !p_buffer )
 788     {
 789         stream_Delete( p_stream );
 790         goto memerror;
 791     }
 792
 793     if ( stream_Read( p_stream, p_buffer, 1024 ) == 0 )
 794     {
 795         stream_Delete( p_stream );
 796         free( p_buffer );
 797         vlc_mutex_unlock ( &p_sys->lock );
 798         return VLC_EGENERIC;
 799     }
 800
 801     stream_Delete( p_stream );
 802
 803     p_buffer_pos = strstr( ( char * ) p_buffer, "INTERVAL" );
 804
 805     if ( p_buffer_pos )
 806     {
 807         p_sys->i_interval = atoi( p_buffer_pos + strlen( "INTERVAL " ) );
 808         time( &p_sys->time_last_interval );
 809     }
 810
 811     p_buffer_pos = strstr( ( char * ) p_buffer, "FAILED" );
 812
 813     if ( p_buffer_pos )
 814     {
 815         msg_Dbg( p_this, p_buffer_pos );
 816         free( p_buffer );
 817         vlc_mutex_unlock ( &p_sys->lock );
 818         return VLC_EGENERIC;
 819     }
 820
 821     p_buffer_pos = strstr( ( char * ) p_buffer, "BADUSER" );
 822
 823     if ( p_buffer_pos )
 824     {
 825         intf_UserFatal( p_this, VLC_FALSE, _("Bad last.fm Username"),
 826             _("last.fm username is incorrect, please verify your settings")
 827         );
 828         free( p_buffer );
 829         vlc_mutex_unlock ( &p_sys->lock );
 830         return VLC_EGENERIC;
 831     }
 832
 833     p_buffer_pos = strstr( ( char * ) p_buffer, "UPDATE" );
 834
 835     if ( p_buffer_pos )
 836     {
 837         msg_Dbg( p_intf, "Protocol updated" );
 838         msg_Dbg( p_intf, p_buffer_pos );
 839     }
 840
 841     else
 842     {
 843         p_buffer_pos = strstr( ( char * ) p_buffer, "UPTODATE" );
 844         if ( !p_buffer_pos )
 845         {
 846             msg_Dbg( p_intf, "Protocol error" );
 847             free( p_buffer );
 848             vlc_mutex_unlock ( &p_sys->lock );
 849             return VLC_EGENERIC;
 850         }
 851     }
 852
 853     psz_buffer_substring = strndup( strstr( p_buffer_pos, "\n" ) + 1, 32 );
 854     if ( !psz_buffer_substring )
 855     {
 856         goto memerror;
 857     }
 858     else
 859     {
 860         ps_challenge_md5 = malloc( sizeof( char ) * 32 );
 861         if ( !ps_challenge_md5 )
 862         {
 863             goto memerror;
 864         }
 865         memcpy( ps_challenge_md5, psz_buffer_substring, 32 );
 866         free( psz_buffer_substring );
 867     }
 868
 869     p_buffer_pos = ( void* ) strstr( ( char* ) p_buffer, "http://" );
 870
 871     if ( p_sys->psz_submit_host != NULL )
 872     {
 873         free( p_sys->psz_submit_host );
 874     }
 875
 876     if ( p_sys->psz_submit_file != NULL )
 877     {
 878         free( p_sys->psz_submit_file );
 879     }
 880
 881     psz_url_parser = p_buffer_pos + strlen( "http://" );
 882
 883     i_url_pos = strcspn( psz_url_parser, ":" );
 884     p_sys->psz_submit_host = strndup( psz_url_parser, i_url_pos );
 885
 886     p_sys->i_submit_port = atoi( psz_url_parser + i_url_pos + 1 );
 887
 888     psz_url_parser += strcspn( psz_url_parser , "/" ) + 1;
 889     i_url_pos = strcspn( psz_url_parser, "\n" );
 890     p_sys->psz_submit_file = strndup( psz_url_parser, i_url_pos );
 891
 892     free(p_buffer);
 893
 894     p_struct_md5 = malloc( sizeof( struct md5_s ) );
 895     if( !p_struct_md5 )
 896     {
 897         goto memerror;
 898     }
 899
 900     psz_password = config_GetPsz(p_this, "lastfm-password");
 901     if ( !psz_password )
 902     {
 903          goto memerror;
 904     }
 905
 906     InitMD5( p_struct_md5 );
 907     AddMD5( p_struct_md5, ( uint8_t* ) psz_password, strlen( psz_password ) );
 908     EndMD5( p_struct_md5 );
 909
 910     free( psz_password );
 911
 912     psz_password_md5 = malloc ( 33 * sizeof( char ) );
 913     if ( !psz_password_md5 )
 914     {
 915         goto memerror;
 916     }
 917
 918     for ( i = 0; i < 4; i++ )
 919     {
 920         sprintf( &psz_password_md5[8*i], "%02x%02x%02x%02x",
 921             p_struct_md5->p_digest[i] & 0xff,
 922             ( p_struct_md5->p_digest[i] >> 8 ) & 0xff,
 923             ( p_struct_md5->p_digest[i] >> 16 ) & 0xff,
 924             p_struct_md5->p_digest[i] >> 24
 925         );
 926     }
 927
 928     strlwr( psz_password_md5 );
 929
 930     InitMD5( p_struct_md5 );
 931     AddMD5( p_struct_md5, ( uint8_t* ) psz_password_md5, 32 );
 932     AddMD5( p_struct_md5, ( uint8_t* ) ps_challenge_md5, 32 );
 933     EndMD5( p_struct_md5 );
 934
 935     free( ps_challenge_md5 );
 936     free( psz_password_md5 );
 937
 938     for ( i = 0; i < 4; i++ )
 939     {
 940         sprintf( &p_sys->psz_response_md5[8*i], "%02x%02x%02x%02x",
 941             p_struct_md5->p_digest[i] & 0xff,
 942             ( p_struct_md5->p_digest[i] >> 8 ) & 0xff,
 943             ( p_struct_md5->p_digest[i] >> 16 ) & 0xff,
 944             p_struct_md5->p_digest[i] >> 24
 945         );
 946     }
 947
 948     p_sys->psz_response_md5[32] = 0;
 949
 950     strlwr( p_sys->psz_response_md5 );
 951
 952     vlc_mutex_unlock ( &p_sys->lock );
 953
 954     return VLC_SUCCESS;
 955
 956 memerror:
 957     free( p_buffer );
 958     free( p_struct_md5 );
 959     free( psz_buffer_substring );
 960
 961     vlc_mutex_unlock ( &p_sys->lock );
 962     return VLC_ENOMEM;
 963 }
 964
 965 /*****************************************************************************
 966  * strlwr : Converts a string to lower case
 967  *****************************************************************************/
 968 #if !defined(strlwr) && !defined( WIN32 )
 969 char* strlwr(char *psz_string)
 970 {
 971     while ( *psz_string )
 972     {
 973         *psz_string++ = tolower( *psz_string );
 974     }
 975     return psz_string;
 976 }
 977 #endif
 978
 979 /*****************************************************************************
 980  * DeleteQueue : Free all songs from an audioscrobbler_queue_t
 981  *****************************************************************************/
 982 void DeleteQueue( audioscrobbler_queue_t *p_queue )
 983 {
 984     int     i;
 985
 986     for( i = 0; i < p_queue->i_songs_nb; i++ )
 987     {
 988         free( p_queue->p_queue[i]->psz_a );
 989         free( p_queue->p_queue[i]->psz_b );
 990         free( p_queue->p_queue[i]->psz_t );
 991         free( p_queue->p_queue[i]->psz_i );
 992         free( p_queue->p_queue[i] );
 993     }
 994 }
 995
 996 /*****************************************************************************
 997  * ReadMetaData : Read meta data when parsed by vlc
 998  * or wait for fetching if unavailable
 999  *****************************************************************************/
1000 static int ReadMetaData( intf_thread_t *p_this )
1001 {
1002     playlist_t          *p_playlist;
1003     input_thread_t      *p_input = NULL;
1004     vlc_value_t         video_val;
1005
1006     intf_sys_t *p_sys = p_this->p_sys;
1007
1008     p_playlist = pl_Yield( p_this );
1009     PL_LOCK;
1010     p_input = p_playlist->p_input;
1011
1012     if( !p_input )
1013     {
1014         PL_UNLOCK;
1015         pl_Release( p_playlist );
1016         return( VLC_SUCCESS );
1017     }
1018
1019     vlc_object_yield( p_input );
1020     PL_UNLOCK;
1021     pl_Release( p_playlist );
1022
1023     var_Change( p_input, "video-es", VLC_VAR_CHOICESCOUNT, &video_val, NULL );
1024     if( ( video_val.i_int > 0 ) || \
1025         ( p_input->input.p_item->i_type == ITEM_TYPE_NET ) )
1026     {
1027         msg_Dbg( p_this, "Not an audio file -> no submission");
1028         vlc_object_release( p_input );
1029
1030         vlc_mutex_lock( &p_sys->lock );
1031         p_sys->b_queued = VLC_TRUE;
1032         p_sys->b_metadata_read = VLC_TRUE;
1033         vlc_mutex_unlock( &p_sys->lock );
1034
1035         return VLC_SUCCESS;
1036     }
1037
1038     return ReadLocalMetaData( p_this, p_input );
1039 }
1040
1041 /*****************************************************************************
1042  * ReadLocalMetaData : Puts current song's meta data in p_sys->p_current_song
1043  *****************************************************************************/
1044 static int ReadLocalMetaData( intf_thread_t *p_this, input_thread_t  *p_input )
1045 {
1046     char                *psz_title = NULL;
1047     char                *psz_artist = NULL;
1048     char                *psz_album = NULL;
1049     int                 i_length = -1;
1050     vlc_bool_t          b_waiting;
1051     int                 i_status;
1052
1053     intf_sys_t *p_sys = p_this->p_sys;
1054
1055     i_status = p_input->input.p_item->p_meta->i_status;
1056
1057     vlc_mutex_lock( &p_sys->lock );
1058     b_waiting = p_sys->b_waiting_meta;
1059     vlc_mutex_unlock( &p_sys->lock );
1060
1061     /* TODO : remove if (1) when meta_engine works */
1062     if ( (1/*( i_status & ITEM_PREPARSED )*/&& ( b_waiting == VLC_FALSE ) ) || \
1063         ( ( i_status & ITEM_META_FETCHED ) && ( b_waiting == VLC_TRUE ) ) )
1064     {
1065         if ( p_input->input.p_item->p_meta->psz_artist )
1066         {
1067             psz_artist = encode_URI_component(
1068                 p_input->input.p_item->p_meta->psz_artist );
1069             if ( !psz_artist )
1070             {
1071                 goto error;
1072             }
1073         }
1074         else
1075         {
1076             msg_Dbg( p_this, "No artist.." );
1077             if ( b_waiting == VLC_TRUE )
1078             {
1079                 psz_artist = calloc( 1, sizeof( char ) );
1080             }
1081             else
1082             {
1083                 goto waiting_meta_data_fetching;
1084             }
1085         }
1086
1087         if ( p_input->input.p_item->psz_name )
1088         {
1089             psz_title = encode_URI_component( p_input->input.p_item->psz_name );
1090             if ( !psz_title )
1091             {
1092                 goto error;
1093             }
1094         }
1095         else
1096         {
1097             msg_Dbg( p_this, "No track name.." );
1098             if ( b_waiting == VLC_TRUE )
1099             {
1100                 psz_title = calloc( 1, sizeof( char ) );
1101             }
1102             else
1103             {
1104                 goto waiting_meta_data_fetching;
1105             }
1106         }
1107
1108         if ( p_input->input.p_item->p_meta->psz_album )
1109         {
1110             psz_album = encode_URI_component(
1111                 p_input->input.p_item->p_meta->psz_album );
1112             if ( !psz_album )
1113             {
1114                 goto error;
1115             }
1116         }
1117         else
1118         {
1119             psz_album = calloc( 1, sizeof( char ) );
1120         }
1121
1122         i_length = p_input->input.p_item->i_duration / 1000000;
1123
1124         vlc_object_release( p_input );
1125
1126         vlc_mutex_lock ( &p_sys->lock );
1127
1128         p_sys->p_current_song->psz_a = strdup( psz_artist );
1129         p_sys->p_current_song->psz_t = strdup( psz_title );
1130         p_sys->p_current_song->psz_b = strdup( psz_album );
1131         p_sys->p_current_song->i_l = i_length;
1132         p_sys->b_queued = VLC_FALSE;
1133         p_sys->b_metadata_read = VLC_TRUE;
1134
1135         vlc_mutex_unlock ( &p_sys->lock );
1136
1137         msg_Dbg( p_this, "Meta data registered, waiting to be queued" );
1138
1139         free( psz_title );
1140         free( psz_artist );
1141         free( psz_album );
1142
1143         return VLC_SUCCESS;
1144     }
1145
1146     return VLC_SUCCESS;
1147
1148 waiting_meta_data_fetching:
1149     vlc_object_release( p_input );
1150
1151     vlc_mutex_lock( &p_sys->lock );
1152     p_sys->b_waiting_meta = VLC_TRUE;
1153     vlc_mutex_unlock( &p_sys->lock );
1154
1155     free( psz_artist );
1156     free( psz_album );
1157     free( psz_title );
1158
1159     return VLC_SUCCESS;
1160
1161 error:
1162     vlc_object_release( p_input );
1163
1164     free( psz_artist );
1165     free( psz_album );
1166     free( psz_title );
1167     return VLC_ENOMEM;
1168 }