git.sesse.net Git - vlc/blob - modules/demux/playlist/asx.c

   1 /*****************************************************************************
   2  * asx.c : ASX playlist format import
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Derk-Jan Hartman <hartman at videolan dot org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /* See also: http://msdn.microsoft.com/library/en-us/wmplay10/mmp_sdk/windowsmediametafilereference.asp
  25  */
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30 #include <stdlib.h>                                      /* malloc(), free() */
  31 #include <ctype.h>                                              /* isspace() */
  32
  33 #include <vlc/vlc.h>
  34 #include <vlc/input.h>
  35
  36 #include <errno.h>                                                 /* ENOMEM */
  37 #include "charset.h"
  38 #include "playlist.h"
  39 #include "vlc_meta.h"
  40
  41 struct demux_sys_t
  42 {
  43     char    *psz_prefix;
  44     char    *psz_data;
  45     int64_t i_data_len;
  46     vlc_bool_t b_utf8;
  47 };
  48
  49 /*****************************************************************************
  50  * Local prototypes
  51  *****************************************************************************/
  52 static int Demux( demux_t *p_demux);
  53 static int Control( demux_t *p_demux, int i_query, va_list args );
  54
  55 static int StoreString( demux_t *p_demux, char **ppsz_string, char *psz_source_start, char *psz_source_end )
  56 {
  57     demux_sys_t *p_sys = p_demux->p_sys;
  58     int i_strlen = psz_source_end-psz_source_start;
  59     if( i_strlen < 1 )
  60         return VLC_EGENERIC;
  61
  62     if( *ppsz_string ) free( *ppsz_string );
  63     *ppsz_string = malloc( i_strlen*sizeof( char ) +1);
  64     memcpy( *ppsz_string, psz_source_start, i_strlen );
  65     (*ppsz_string)[i_strlen] = '\0';
  66
  67     if( p_sys->b_utf8 )
  68         EnsureUTF8( *ppsz_string );
  69     else
  70     {
  71         char *psz_temp;
  72         psz_temp = FromLocaleDup( *ppsz_string );
  73         if( psz_temp )
  74         {
  75             free( *ppsz_string );
  76             *ppsz_string = psz_temp;
  77         } else EnsureUTF8( *ppsz_string );
  78     }
  79     return VLC_SUCCESS;
  80 }
  81
  82 /*****************************************************************************
  83  * Import_ASX: main import function
  84  *****************************************************************************/
  85 int E_(Import_ASX)( vlc_object_t *p_this )
  86 {
  87     demux_t *p_demux = (demux_t *)p_this;
  88     uint8_t *p_peek;
  89     CHECK_PEEK( p_peek, 10 );
  90
  91     if( POKE( p_peek, "<asx", 4 ) || isExtension( p_demux, ".asx" ) ||
  92         isExtension( p_demux, ".wax" ) || isExtension( p_demux, ".wvx" ) ||
  93         isDemux( p_demux, "asx-open" ) )
  94     {
  95         ;
  96     }
  97     else
  98         return VLC_EGENERIC;
  99
 100     STANDARD_DEMUX_INIT_MSG( "found valid ASX playlist" );
 101     p_demux->p_sys->psz_prefix = E_(FindPrefix)( p_demux );
 102     p_demux->p_sys->psz_data = NULL;
 103     p_demux->p_sys->i_data_len = -1;
 104     p_demux->p_sys->b_utf8 = VLC_FALSE;
 105
 106     return VLC_SUCCESS;
 107 }
 108
 109 /*****************************************************************************
 110  * Deactivate: frees unused data
 111  *****************************************************************************/
 112 void E_(Close_ASX)( vlc_object_t *p_this )
 113 {
 114     demux_t *p_demux = (demux_t *)p_this;
 115     demux_sys_t *p_sys = p_demux->p_sys;
 116
 117     if( p_sys->psz_prefix ) free( p_sys->psz_prefix );
 118     if( p_sys->psz_data ) free( p_sys->psz_data );
 119     free( p_sys );
 120 }
 121
 122 static int Demux( demux_t *p_demux )
 123 {
 124     demux_sys_t *p_sys = p_demux->p_sys;
 125     char        *psz_parse = NULL;
 126     char        *psz_backup = NULL;
 127     vlc_bool_t  b_entry = VLC_FALSE;
 128
 129     INIT_PLAYLIST_STUFF;
 130
 131     /* init txt */
 132     if( p_sys->i_data_len < 0 )
 133     {
 134         int64_t i_pos = 0;
 135         p_sys->i_data_len = stream_Size( p_demux->s ) +1; /* This is a cheat to prevent unnecessary realloc */
 136         if( p_sys->i_data_len <= 0 && p_sys->i_data_len < 16384 ) p_sys->i_data_len = 1024;
 137         p_sys->psz_data = malloc( p_sys->i_data_len * sizeof(char) +1);
 138
 139         /* load the complete file */
 140         for( ;; )
 141         {
 142             int i_read = stream_Read( p_demux->s, &p_sys->psz_data[i_pos], p_sys->i_data_len - i_pos );
 143             p_sys->psz_data[i_read] = '\0';
 144
 145             if( i_read < p_sys->i_data_len - i_pos ) break; /* Done */
 146
 147             i_pos += i_read;
 148             p_sys->i_data_len += 1024;
 149             p_sys->psz_data = realloc( p_sys->psz_data, p_sys->i_data_len * sizeof( char * ) +1 );
 150         }
 151         if( p_sys->i_data_len <= 0 ) return VLC_EGENERIC;
 152     }
 153
 154     psz_parse = p_sys->psz_data;
 155     /* Find first element */
 156     if( ( psz_parse = strcasestr( psz_parse, "<ASX" ) ) )
 157     {
 158         /* ASX element */
 159         char *psz_string = NULL;
 160         int i_strlen = 0;
 161
 162         char *psz_base_asx = NULL;
 163         char *psz_title_asx = NULL;
 164         char *psz_author_asx = NULL;
 165         char *psz_copyright_asx = NULL;
 166         char *psz_moreinfo_asx = NULL;
 167         char *psz_abstract_asx = NULL;
 168
 169         char *psz_base_entry = NULL;
 170         char *psz_title_entry = NULL;
 171         char *psz_author_entry = NULL;
 172         char *psz_copyright_entry = NULL;
 173         char *psz_moreinfo_entry = NULL;
 174         char *psz_abstract_entry = NULL;
 175         int i_entry_count = 0;
 176
 177         psz_parse = strcasestr( psz_parse, ">" );
 178
 179         while( ( psz_parse = strcasestr( psz_parse, "<" ) ) && psz_parse && *psz_parse )
 180         {
 181             if( !strncasecmp( psz_parse, "<!--", 4 ) )
 182             {
 183                 /* this is a comment */
 184                 if( ( psz_parse = strcasestr( psz_parse, "-->" ) ) )
 185                     psz_parse+=3;
 186                 else continue;
 187             }
 188             else if( !strncasecmp( psz_parse, "<PARAM ", 7 ) )
 189             {
 190                 vlc_bool_t b_encoding_flag = VLC_FALSE;
 191                 psz_parse+=7;
 192                 if( !strncasecmp( psz_parse, "name", 4 ) )
 193                 {
 194                     if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 195                     {
 196                         psz_backup = ++psz_parse;
 197                         if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 198                         {
 199                             i_strlen = psz_parse-psz_backup;
 200                             if( i_strlen < 1 ) continue;
 201                             msg_Dbg( p_demux, "param name strlen: %d", i_strlen);
 202                             psz_string = malloc( i_strlen *sizeof( char ) +1);
 203                             memcpy( psz_string, psz_backup, i_strlen );
 204                             psz_string[i_strlen] = '\0';
 205                             msg_Dbg( p_demux, "param name: %s", psz_string);
 206                             b_encoding_flag = !strcasecmp( psz_string, "encoding" );
 207                             free( psz_string );
 208                         }
 209                         else continue;
 210                     }
 211                     else continue;
 212                 }
 213                 psz_parse++;
 214                 if( !strncasecmp( psz_parse, "value", 5 ) )
 215                 {
 216                     if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 217                     {
 218                         psz_backup = ++psz_parse;
 219                         if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 220                         {
 221                             i_strlen = psz_parse-psz_backup;
 222                             if( i_strlen < 1 ) continue;
 223                             msg_Dbg( p_demux, "param value strlen: %d", i_strlen);
 224                             psz_string = malloc( i_strlen *sizeof( char ) +1);
 225                             memcpy( psz_string, psz_backup, i_strlen );
 226                             psz_string[i_strlen] = '\0';
 227                             msg_Dbg( p_demux, "param value: %s", psz_string);
 228                             if( b_encoding_flag && !strcasecmp( psz_string, "utf-8" ) ) p_sys->b_utf8 = VLC_TRUE;
 229                             free( psz_string );
 230                         }
 231                         else continue;
 232                     }
 233                     else continue;
 234                 }
 235                 if( ( psz_parse = strcasestr( psz_parse, "/>" ) ) )
 236                     psz_parse += 2;
 237                 else continue;
 238             }
 239             else if( !strncasecmp( psz_parse, "<BANNER", 7 ) )
 240             {
 241                 /* We skip this element */
 242                 if( ( psz_parse = strcasestr( psz_parse, "</BANNER>" ) ) )
 243                     psz_parse += 9;
 244                 else continue;
 245             }
 246             else if( !strncasecmp( psz_parse, "<PREVIEWDURATION", 16 ) ||
 247                      !strncasecmp( psz_parse, "<LOGURL", 7 ) ||
 248                      !strncasecmp( psz_parse, "<Skin", 5 ) )
 249             {
 250                 /* We skip this element */
 251                 if( ( psz_parse = strcasestr( psz_parse, "/>" ) ) )
 252                     psz_parse += 2;
 253                 else continue;
 254             }
 255             else if( !strncasecmp( psz_parse, "<BASE ", 6 ) )
 256             {
 257                 psz_parse+=6;
 258                 if( !strncasecmp( psz_parse, "HREF", 4 ) )
 259                 {
 260                     if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 261                     {
 262                         psz_backup = ++psz_parse;
 263                         if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 264                         {
 265                             StoreString( p_demux, (b_entry ? &psz_base_entry : &psz_base_asx), psz_backup, psz_parse );
 266                         }
 267                         else continue;
 268                     }
 269                     else continue;
 270                 }
 271                 if( ( psz_parse = strcasestr( psz_parse, "/>" ) ) )
 272                     psz_parse += 2;
 273                 else continue;
 274             }
 275             else if( !strncasecmp( psz_parse, "<TITLE>", 7 ) )
 276             {
 277                 psz_backup = psz_parse+=7;
 278                 if( ( psz_parse = strcasestr( psz_parse, "</TITLE>" ) ) )
 279                 {
 280                     StoreString( p_demux, (b_entry ? &psz_title_entry : &psz_title_asx), psz_backup, psz_parse );
 281                     psz_parse += 8;
 282                 }
 283                 else continue;
 284             }
 285             else if( !strncasecmp( psz_parse, "<Author>", 8 ) )
 286             {
 287                 psz_backup = psz_parse+=8;
 288                 if( ( psz_parse = strcasestr( psz_parse, "</Author>" ) ) )
 289                 {
 290                     StoreString( p_demux, (b_entry ? &psz_author_entry : &psz_author_asx), psz_backup, psz_parse );
 291                     psz_parse += 9;
 292                 }
 293                 else continue;
 294             }
 295             else if( !strncasecmp( psz_parse, "<Copyright", 10 ) )
 296             {
 297                 psz_backup = psz_parse+=11;
 298                 if( ( psz_parse = strcasestr( psz_parse, "</Copyright>" ) ) )
 299                 {
 300                     StoreString( p_demux, (b_entry ? &psz_copyright_entry : &psz_copyright_asx), psz_backup, psz_parse );
 301                     psz_parse += 12;
 302                 }
 303                 else continue;
 304             }
 305             else if( !strncasecmp( psz_parse, "<MoreInfo ", 10 ) )
 306             {
 307                 psz_parse+=10;
 308                 if( !strncasecmp( psz_parse, "HREF", 4 ) )
 309                 {
 310                     if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 311                     {
 312                         psz_backup = ++psz_parse;
 313                         if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 314                         {
 315                             StoreString( p_demux, (b_entry ? &psz_moreinfo_entry : &psz_moreinfo_asx), psz_backup, psz_parse );
 316                         }
 317                         else continue;
 318                     }
 319                     else continue;
 320                 }
 321                 if( ( psz_parse = strcasestr( psz_parse, "/>" ) ) )
 322                     psz_parse += 2;
 323                 else continue;
 324             }
 325             else if( !strncasecmp( psz_parse, "<ABSTRACT>", 10 ) )
 326             {
 327                 psz_backup = psz_parse+=10;
 328                 if( ( psz_parse = strcasestr( psz_parse, "</ABSTRACT>" ) ) )
 329                 {
 330                     StoreString( p_demux, (b_entry ? &psz_abstract_entry : &psz_abstract_asx), psz_backup, psz_parse );
 331                     psz_parse += 11;
 332                 }
 333                 else continue;
 334             }
 335             else if( !strncasecmp( psz_parse, "<EntryRef ", 10 ) )
 336             {
 337                 psz_parse+=10;
 338                 if( !strncasecmp( psz_parse, "HREF", 4 ) )
 339                 {
 340                     if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 341                     {
 342                         psz_backup = ++psz_parse;
 343                         if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 344                         {
 345                             i_strlen = psz_parse-psz_backup;
 346                             if( i_strlen < 1 ) continue;
 347                             psz_string = malloc( i_strlen*sizeof( char ) +1);
 348                             memcpy( psz_string, psz_backup, i_strlen );
 349                             psz_string[i_strlen] = '\0';
 350                             p_input = input_ItemNew( p_playlist, psz_string, psz_title_asx );
 351                             vlc_input_item_CopyOptions( p_current->p_input, p_input );
 352                             playlist_AddWhereverNeeded( p_playlist, p_input, p_current,
 353                                  p_item_in_category, (i_parent_id > 0 )? VLC_TRUE : VLC_FALSE,
 354                                  PLAYLIST_APPEND );
 355                             free( psz_string );
 356                         }
 357                         else continue;
 358                     }
 359                     else continue;
 360                 }
 361                 if( ( psz_parse = strcasestr( psz_parse, "/>" ) ) )
 362                     psz_parse += 2;
 363                 else continue;
 364             }
 365             else if( !strncasecmp( psz_parse, "</Entry>", 8 ) )
 366             {
 367                 /* add a new entry */
 368                 psz_parse+=8;
 369                 if( !b_entry )
 370                 {
 371                     msg_Err( p_demux, "end of entry without start?" );
 372                     continue;
 373                 }
 374                 /* cleanup entry */
 375                 FREENULL( psz_title_entry )
 376                 FREENULL( psz_base_entry )
 377                 FREENULL( psz_author_entry )
 378                 FREENULL( psz_copyright_entry )
 379                 FREENULL( psz_moreinfo_entry )
 380                 FREENULL( psz_abstract_entry )
 381                 b_entry = VLC_FALSE;
 382             }
 383             else if( !strncasecmp( psz_parse, "<Entry", 6 ) )
 384             {
 385                 psz_parse+=6;
 386                 if( b_entry )
 387                 {
 388                     msg_Err( p_demux, "We already are in an entry section" );
 389                     continue;
 390                 }
 391                 i_entry_count += 1;
 392                 b_entry = VLC_TRUE;
 393                 psz_parse = strcasestr( psz_parse, ">" );
 394             }
 395             else if( !strncasecmp( psz_parse, "<Ref ", 5 ) )
 396             {
 397                 psz_parse+=5;
 398                 if( !b_entry )
 399                 {
 400                     msg_Err( p_demux, "A ref outside an entry section" );
 401                     continue;
 402                 }
 403
 404                 if( !strncasecmp( psz_parse, "HREF", 4 ) )
 405                 {
 406                     if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 407                     {
 408                         psz_backup = ++psz_parse;
 409                         if( ( psz_parse = strcasestr( psz_parse, "\"" ) ) )
 410                         {
 411                             input_item_t *p_entry = NULL;
 412                             char *psz_name = NULL;
 413                             i_strlen = psz_parse-psz_backup;
 414                             if( i_strlen < 1 ) continue;
 415                             psz_string = malloc( i_strlen*sizeof( char ) +1);
 416                             memcpy( psz_string, psz_backup, i_strlen );
 417                             psz_string[i_strlen] = '\0';
 418
 419                             /* create the new entry */
 420                             asprintf( &psz_name, "%d %s", i_entry_count, ( psz_title_entry ? psz_title_entry : p_current->p_input->psz_name ) );
 421                             p_entry = input_ItemNew( p_playlist, psz_string, psz_name );
 422                             FREENULL( psz_name );
 423
 424                             vlc_input_item_CopyOptions( p_current->p_input, p_entry );
 425                             p_entry->p_meta = vlc_meta_New();
 426                             if( psz_title_entry ) vlc_meta_SetTitle( p_entry->p_meta, psz_title_entry );
 427                             if( psz_author_entry ) vlc_meta_SetAuthor( p_entry->p_meta, psz_author_entry );
 428                             if( psz_copyright_entry ) vlc_meta_SetCopyright( p_entry->p_meta, psz_copyright_entry );
 429                             if( psz_moreinfo_entry ) vlc_meta_SetURL( p_entry->p_meta, psz_moreinfo_entry );
 430                             if( psz_abstract_entry ) vlc_meta_SetDescription( p_entry->p_meta, psz_abstract_entry );
 431
 432                             playlist_AddWhereverNeeded( p_playlist, p_entry, p_current,
 433                                 p_item_in_category, (i_parent_id > 0 )? VLC_TRUE : VLC_FALSE,
 434                                 PLAYLIST_APPEND );
 435                             free( psz_string );
 436                         }
 437                         else continue;
 438                     }
 439                     else continue;
 440                 }
 441                 if( ( psz_parse = strcasestr( psz_parse, "/>" ) ) )
 442                     psz_parse += 2;
 443                 else continue;
 444             }
 445             else if( !strncasecmp( psz_parse, "</ASX", 5 ) )
 446             {
 447                 vlc_mutex_lock( &p_current->p_input->lock );
 448                 if( !p_current->p_input->p_meta ) p_current->p_input->p_meta = vlc_meta_New();
 449                 if( psz_title_asx ) vlc_meta_SetTitle( p_current->p_input->p_meta, psz_title_asx );
 450                 if( psz_author_asx ) vlc_meta_SetAuthor( p_current->p_input->p_meta, psz_author_asx );
 451                 if( psz_copyright_asx ) vlc_meta_SetCopyright( p_current->p_input->p_meta, psz_copyright_asx );
 452                 if( psz_moreinfo_asx ) vlc_meta_SetURL( p_current->p_input->p_meta, psz_moreinfo_asx );
 453                 if( psz_abstract_asx ) vlc_meta_SetDescription( p_current->p_input->p_meta, psz_abstract_asx );
 454                 vlc_mutex_unlock( &p_current->p_input->lock );
 455                 FREENULL( psz_base_asx );
 456                 FREENULL( psz_title_asx );
 457                 FREENULL( psz_author_asx );
 458                 FREENULL( psz_copyright_asx );
 459                 FREENULL( psz_moreinfo_asx );
 460                 FREENULL( psz_abstract_asx );
 461                 psz_parse++;
 462             }
 463             else psz_parse++;
 464         }
 465 #if 0
 466 /* FIXME Unsupported elements */
 467             PARAM
 468             EVENT
 469             REPEAT
 470             DURATION
 471             ENDMARK
 472             STARTMARK
 473             STARTTIME
 474 #endif
 475     }
 476     HANDLE_PLAY_AND_RELEASE;
 477     return VLC_SUCCESS;
 478 }
 479
 480 static int Control( demux_t *p_demux, int i_query, va_list args )
 481 {
 482     return VLC_EGENERIC;
 483 }