git.sesse.net Git - vlc/blob - modules/access/directory.c

   1 /*****************************************************************************
   2  * directory.c: expands a directory (directory: access plug-in)
   3  *****************************************************************************
   4  * Copyright (C) 2002-2004 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 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #include <vlc/vlc.h>
  29 #include <vlc/input.h>
  30 #include <vlc_playlist.h>
  31
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #ifdef HAVE_SYS_TYPES_H
  35 #   include <sys/types.h>
  36 #endif
  37 #ifdef HAVE_SYS_STAT_H
  38 #   include <sys/stat.h>
  39 #endif
  40 #ifdef HAVE_ERRNO_H
  41 #   include <errno.h>
  42 #endif
  43 #ifdef HAVE_FCNTL_H
  44 #   include <fcntl.h>
  45 #endif
  46
  47 #ifdef HAVE_UNISTD_H
  48 #   include <unistd.h>
  49 #elif defined( WIN32 ) && !defined( UNDER_CE )
  50 #   include <io.h>
  51 #elif defined( UNDER_CE )
  52 #   define strcoll strcmp
  53 #endif
  54
  55 #ifdef HAVE_DIRENT_H
  56 #   include <dirent.h>
  57 #endif
  58
  59 #include "charset.h"
  60
  61 /*****************************************************************************
  62  * Module descriptor
  63  *****************************************************************************/
  64 static int  Open ( vlc_object_t * );
  65 static void Close( vlc_object_t * );
  66
  67 static int  DemuxOpen ( vlc_object_t * );
  68
  69 #define RECURSIVE_TEXT N_("Subdirectory behavior")
  70 #define RECURSIVE_LONGTEXT N_( \
  71         "Select whether subdirectories must be expanded.\n" \
  72         "none: subdirectories do not appear in the playlist.\n" \
  73         "collapse: subdirectories appear but are expanded on first play.\n" \
  74         "expand: all subdirectories are expanded.\n" )
  75
  76 static char *psz_recursive_list[] = { "none", "collapse", "expand" };
  77 static char *psz_recursive_list_text[] = { N_("none"), N_("collapse"),
  78                                            N_("expand") };
  79
  80 #define IGNORE_TEXT N_("Ignored extensions")
  81 #define IGNORE_LONGTEXT N_( \
  82         "Files with these extensions will not be added to playlist when " \
  83         "opening a directory.\n" \
  84         "This is useful if you add directories that contain playlist files " \
  85         "for instance. Use a comma-separated list of extensions." )
  86
  87 vlc_module_begin();
  88     set_category( CAT_INPUT );
  89     set_shortname( _("Directory" ) );
  90     set_subcategory( SUBCAT_INPUT_ACCESS );
  91     set_description( _("Standard filesystem directory input") );
  92     set_capability( "access2", 55 );
  93     add_shortcut( "directory" );
  94     add_shortcut( "dir" );
  95     add_string( "recursive", "expand" , NULL, RECURSIVE_TEXT,
  96                 RECURSIVE_LONGTEXT, VLC_FALSE );
  97       change_string_list( psz_recursive_list, psz_recursive_list_text, 0 );
  98     add_string( "ignore-filetypes", "m3u,db,nfo,jpg,gif,sfv,txt,sub,idx,srt,cue",
  99                 NULL, IGNORE_TEXT, IGNORE_LONGTEXT, VLC_FALSE );
 100     set_callbacks( Open, Close );
 101
 102     add_submodule();
 103         set_description( "Directory EOF");
 104         set_capability( "demux2", 0 );
 105         add_shortcut( "directory" );
 106         set_callbacks( DemuxOpen, NULL );
 107 vlc_module_end();
 108
 109
 110 /*****************************************************************************
 111  * Local prototypes, constants, structures
 112  *****************************************************************************/
 113
 114 #define MODE_EXPAND 0
 115 #define MODE_COLLAPSE 1
 116 #define MODE_NONE 2
 117
 118 static int Read( access_t *, uint8_t *, int );
 119 static int ReadNull( access_t *, uint8_t *, int );
 120 static int Control( access_t *, int, va_list );
 121
 122 static int Demux( demux_t *p_demux );
 123 static int DemuxControl( demux_t *p_demux, int i_query, va_list args );
 124
 125
 126 static int ReadDir( playlist_t *, const char *psz_name, int i_mode,
 127                     playlist_item_t *, playlist_item_t * );
 128
 129 /*****************************************************************************
 130  * Open: open the directory
 131  *****************************************************************************/
 132 static int Open( vlc_object_t *p_this )
 133 {
 134     access_t *p_access = (access_t*)p_this;
 135
 136 #ifdef HAVE_SYS_STAT_H
 137     struct stat stat_info;
 138     char *psz_path = ToLocale( p_access->psz_path );
 139
 140     if( ( stat( psz_path, &stat_info ) == -1 ) ||
 141         !S_ISDIR( stat_info.st_mode ) )
 142 #elif defined(WIN32)
 143     int i_ret;
 144
 145 #   ifdef UNICODE
 146     wchar_t psz_path[MAX_PATH];
 147     mbstowcs( psz_path, p_access->psz_path, MAX_PATH );
 148     psz_path[MAX_PATH-1] = 0;
 149 #   else
 150     char *psz_path = p_access->psz_path;
 151 #   endif /* UNICODE */
 152
 153     i_ret = GetFileAttributes( psz_path );
 154     if( i_ret == -1 || !(i_ret & FILE_ATTRIBUTE_DIRECTORY) )
 155
 156 #else
 157     if( strcmp( p_access->psz_access, "dir") &&
 158         strcmp( p_access->psz_access, "directory") )
 159 #endif
 160     {
 161         LocaleFree( psz_path );
 162         return VLC_EGENERIC;
 163     }
 164
 165     LocaleFree( psz_path );
 166     p_access->pf_read  = Read;
 167     p_access->pf_block = NULL;
 168     p_access->pf_seek  = NULL;
 169     p_access->pf_control= Control;
 170
 171     /* Force a demux */
 172     p_access->psz_demux = strdup( "directory" );
 173
 174     return VLC_SUCCESS;
 175 }
 176
 177 /*****************************************************************************
 178  * Close: close the target
 179  *****************************************************************************/
 180 static void Close( vlc_object_t * p_this )
 181 {
 182 }
 183
 184 /*****************************************************************************
 185  * ReadNull: read the directory
 186  *****************************************************************************/
 187 static int ReadNull( access_t *p_access, uint8_t *p_buffer, int i_len)
 188 {
 189     /* Return fake data */
 190     memset( p_buffer, 0, i_len );
 191     return i_len;
 192 }
 193
 194 /*****************************************************************************
 195  * Read: read the directory
 196  *****************************************************************************/
 197 static int Read( access_t *p_access, uint8_t *p_buffer, int i_len)
 198 {
 199     char *psz_name = NULL;
 200     char *psz;
 201     int  i_mode, i_activity;
 202
 203     playlist_item_t *p_item, *p_root_category;
 204     vlc_bool_t b_play = VLC_FALSE;
 205
 206     playlist_t *p_playlist =
 207         (playlist_t *) vlc_object_find( p_access,
 208                                         VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 209
 210     if( !p_playlist )
 211     {
 212         msg_Err( p_access, "can't find playlist" );
 213         goto end;
 214     }
 215
 216     char *ptr;
 217     psz_name = ToLocale( p_access->psz_path );
 218     ptr = strdup( psz_name );
 219     LocaleFree( psz_name );
 220     if( ptr == NULL )
 221         goto end;
 222
 223     psz_name = ptr;
 224
 225     /* Remove the ending '/' char */
 226     ptr += strlen( ptr );
 227     if( ( ptr > psz_name ) )
 228     {
 229         switch( *--ptr )
 230         {
 231             case '/':
 232             case '\\':
 233                 *ptr = '\0';
 234         }
 235     }
 236
 237     /* Handle mode */
 238     psz = var_CreateGetString( p_access, "recursive" );
 239     if( *psz == '\0' || !strncmp( psz, "none" , 4 )  )
 240         i_mode = MODE_NONE;
 241     else if( !strncmp( psz, "collapse", 8 )  )
 242         i_mode = MODE_COLLAPSE;
 243     else
 244         i_mode = MODE_EXPAND;
 245     free( psz );
 246
 247     msg_Dbg( p_access, "opening directory `%s'", p_access->psz_path );
 248
 249     if( p_playlist->status.p_item->p_input ==
 250         ((input_thread_t *)p_access->p_parent)->input.p_item )
 251     {
 252         p_item = p_playlist->status.p_item;
 253         b_play = VLC_TRUE;
 254         msg_Dbg( p_access, "starting directory playback");
 255     }
 256     else
 257     {
 258         input_item_t *p_current = ( (input_thread_t*)p_access->p_parent)->
 259                                                         input.p_item;
 260         p_item = playlist_LockItemGetByInput( p_playlist, p_current );
 261         msg_Dbg( p_access, "not starting directory playback");
 262         if( !p_item )
 263         {
 264             msg_Dbg( p_playlist, "unable to find item in playlist");
 265             return -1;
 266         }
 267         b_play = VLC_FALSE;
 268     }
 269     p_item->p_input->i_type = ITEM_TYPE_DIRECTORY;
 270
 271     p_root_category = playlist_LockItemToNode( p_playlist, p_item );
 272
 273     i_activity = var_GetInteger( p_playlist, "activity" );
 274     var_SetInteger( p_playlist, "activity", i_activity +
 275                     DIRECTORY_ACTIVITY );
 276
 277     ReadDir( p_playlist, psz_name , i_mode, p_item, p_root_category );
 278
 279     i_activity = var_GetInteger( p_playlist, "activity" );
 280     var_SetInteger( p_playlist, "activity", i_activity -
 281                     DIRECTORY_ACTIVITY );
 282 end:
 283
 284     /* Begin to read the directory */
 285     if( b_play )
 286     {
 287 #if 0
 288        /// \bug we can start playing an already deleted item. Fix ?*/
 289        playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, 1242,
 290                           p_playlist->status.p_item, NULL );
 291 #endif
 292     }
 293     if( psz_name ) free( psz_name );
 294     vlc_object_release( p_playlist );
 295
 296     /* Return fake data forever */
 297     p_access->pf_read = ReadNull;
 298     return ReadNull( p_access, p_buffer, i_len );
 299 }
 300
 301 /*****************************************************************************
 302  * DemuxOpen:
 303  *****************************************************************************/
 304 static int Control( access_t *p_access, int i_query, va_list args )
 305 {
 306     vlc_bool_t   *pb_bool;
 307     int          *pi_int;
 308     int64_t      *pi_64;
 309
 310     switch( i_query )
 311     {
 312         /* */
 313         case ACCESS_CAN_SEEK:
 314         case ACCESS_CAN_FASTSEEK:
 315         case ACCESS_CAN_PAUSE:
 316         case ACCESS_CAN_CONTROL_PACE:
 317             pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
 318             *pb_bool = VLC_FALSE;    /* FIXME */
 319             break;
 320
 321         /* */
 322         case ACCESS_GET_MTU:
 323             pi_int = (int*)va_arg( args, int * );
 324             *pi_int = 0;
 325             break;
 326
 327         case ACCESS_GET_PTS_DELAY:
 328             pi_64 = (int64_t*)va_arg( args, int64_t * );
 329             *pi_64 = DEFAULT_PTS_DELAY * 1000;
 330             break;
 331
 332         /* */
 333         case ACCESS_SET_PAUSE_STATE:
 334         case ACCESS_GET_TITLE_INFO:
 335         case ACCESS_SET_TITLE:
 336         case ACCESS_SET_SEEKPOINT:
 337         case ACCESS_SET_PRIVATE_ID_STATE:
 338             return VLC_EGENERIC;
 339
 340         default:
 341             msg_Warn( p_access, "unimplemented query in control" );
 342             return VLC_EGENERIC;
 343     }
 344     return VLC_SUCCESS;
 345 }
 346
 347 /*****************************************************************************
 348  * DemuxOpen:
 349  *****************************************************************************/
 350 static int DemuxOpen ( vlc_object_t *p_this )
 351 {
 352     demux_t *p_demux = (demux_t*)p_this;
 353
 354     if( strcmp( p_demux->psz_demux, "directory" ) )
 355         return VLC_EGENERIC;
 356
 357     p_demux->pf_demux   = Demux;
 358     p_demux->pf_control = DemuxControl;
 359     return VLC_SUCCESS;
 360 }
 361
 362 /*****************************************************************************
 363  * Demux: EOF
 364  *****************************************************************************/
 365 static int Demux( demux_t *p_demux )
 366 {
 367     return 0;
 368 }
 369
 370 /*****************************************************************************
 371  * DemuxControl:
 372  *****************************************************************************/
 373 static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
 374 {
 375     return demux2_vaControlHelper( p_demux->s, 0, 0, 0, 1, i_query, args );
 376 }
 377
 378 static int Filter( const struct dirent *foo )
 379 {
 380     return VLC_TRUE;
 381 }
 382
 383 /*****************************************************************************
 384  * ReadDir: read a directory and add its content to the list
 385  *****************************************************************************/
 386 static int ReadDir( playlist_t *p_playlist, const char *psz_name,
 387                     int i_mode, playlist_item_t *p_parent,
 388                     playlist_item_t *p_parent_category )
 389 {
 390     struct dirent   **pp_dir_content;
 391     int             i_dir_content, i;
 392     playlist_item_t *p_node;
 393
 394     /* Build array with ignores */
 395     char **ppsz_extensions = 0;
 396     int i_extensions = 0;
 397     char *psz_ignore = var_CreateGetString( p_playlist, "ignore-filetypes" );
 398     if( psz_ignore && *psz_ignore )
 399     {
 400         char *psz_parser = psz_ignore;
 401         int a;
 402
 403         for( a = 0; psz_parser[a] != '\0'; a++ )
 404         {
 405             if( psz_parser[a] == ',' ) i_extensions++;
 406         }
 407
 408         ppsz_extensions = (char **)malloc( sizeof( char * ) * i_extensions );
 409
 410         for( a = 0; a < i_extensions; a++ )
 411         {
 412             char *tmp, *ptr;
 413
 414             while( psz_parser[0] != '\0' && psz_parser[0] == ' ' ) psz_parser++;
 415             ptr = strchr( psz_parser, ',');
 416             tmp = ( ptr == NULL )
 417                  ? strdup( psz_parser )
 418                  : strndup( psz_parser, ptr - psz_parser );
 419
 420             ppsz_extensions[a] = tmp;
 421             psz_parser = ptr + 1;
 422         }
 423     }
 424
 425     /* get the first directory entry */
 426     i_dir_content = scandir( psz_name, &pp_dir_content, Filter, alphasort );
 427     if( i_dir_content == -1 )
 428     {
 429         msg_Warn( p_playlist, "failed to read directory" );
 430         return VLC_EGENERIC;
 431     }
 432     else if( i_dir_content <= 0 )
 433     {
 434         /* directory is empty */
 435         return VLC_SUCCESS;
 436     }
 437
 438     /* While we still have entries in the directory */
 439     for( i = 0; i < i_dir_content; i++ )
 440     {
 441         struct dirent *p_dir_content = pp_dir_content[i];
 442         int i_size_entry = strlen( psz_name ) +
 443                            strlen( p_dir_content->d_name ) + 2;
 444         char *psz_uri = (char *)malloc( sizeof(char) * i_size_entry );
 445
 446         sprintf( psz_uri, "%s/%s", psz_name, p_dir_content->d_name );
 447
 448         /* if it starts with '.' then forget it */
 449         if( p_dir_content->d_name[0] != '.' )
 450         {
 451 #if defined( S_ISDIR )
 452             struct stat stat_data;
 453
 454             if( !stat( psz_uri, &stat_data )
 455              && S_ISDIR(stat_data.st_mode) && i_mode != MODE_COLLAPSE )
 456 #elif defined( DT_DIR )
 457             if( ( p_dir_content->d_type & DT_DIR ) && i_mode != MODE_COLLAPSE )
 458 #else
 459             if( 0 )
 460 #endif
 461             {
 462 #if defined( S_ISLNK )
 463 /*
 464  * FIXME: there is a ToCToU race condition here; but it is rather tricky
 465  * impossible to fix while keeping some kind of portable code, and maybe even
 466  * in a non-portable way.
 467  */
 468                 if( lstat( psz_uri, &stat_data )
 469                  || S_ISLNK(stat_data.st_mode) )
 470                 {
 471                     msg_Dbg( p_playlist, "skipping directory symlink %s",
 472                              psz_uri );
 473                     free( psz_uri );
 474                     continue;
 475                 }
 476 #endif
 477                 if( i_mode == MODE_NONE )
 478                 {
 479                     msg_Dbg( p_playlist, "skipping subdirectory %s", psz_uri );
 480                     free( psz_uri );
 481                     continue;
 482                 }
 483                 else if( i_mode == MODE_EXPAND )
 484                 {
 485                     char *psz_newname, *psz_tmp;
 486                     msg_Dbg(p_playlist, "reading subdirectory %s", psz_uri );
 487
 488                     psz_tmp = FromLocale( p_dir_content->d_name );
 489                     psz_newname = vlc_fix_readdir_charset(
 490                                                 p_playlist, psz_tmp );
 491                     LocaleFree( psz_tmp );
 492
 493                     if( p_parent_category )
 494                     {
 495                         p_node = playlist_NodeCreate( p_playlist, psz_newname,
 496                                                       p_parent_category );
 497                     }
 498                     else
 499                     {
 500                         p_node = playlist_NodeCreate( p_playlist, psz_newname,
 501                                                       p_parent_category );
 502                     }
 503
 504                     /* If we had the parent in category, the it is now node.
 505                      * Else, we still don't have  */
 506                     if( ReadDir( p_playlist, psz_uri , MODE_EXPAND,
 507                                  p_node, p_parent_category ? p_node : NULL )
 508                           != VLC_SUCCESS )
 509                     {
 510                         return VLC_EGENERIC;
 511                     }
 512
 513                     /* an strdup() just because of Mac OS X */
 514                     free( psz_newname );
 515                 }
 516             }
 517             else
 518             {
 519                 input_item_t *p_input;
 520                 char *psz_tmp1, *psz_tmp2, *psz_loc;
 521
 522                 if( i_extensions > 0 )
 523                 {
 524                     char *psz_dot = strrchr( p_dir_content->d_name, '.' );
 525                     if( psz_dot++ && *psz_dot )
 526                     {
 527                         int a;
 528                         for( a = 0; a < i_extensions; a++ )
 529                         {
 530                             if( !strcmp( psz_dot, ppsz_extensions[a] ) )
 531                                 break;
 532                         }
 533                         if( a < i_extensions )
 534                         {
 535                             msg_Dbg( p_playlist, "ignoring file %s", psz_uri );
 536                             free( psz_uri );
 537                             continue;
 538                         }
 539                     }
 540                 }
 541
 542                 psz_loc = FromLocale( psz_uri );
 543                 psz_tmp1 = vlc_fix_readdir_charset( VLC_OBJECT(p_playlist),
 544                                                     psz_loc );
 545                 LocaleFree( psz_loc );
 546
 547                 psz_loc = FromLocale( p_dir_content->d_name );
 548                 psz_tmp2 = vlc_fix_readdir_charset( VLC_OBJECT(p_playlist),
 549                                                     psz_loc );
 550                 LocaleFree( psz_loc );
 551
 552                 p_input = input_ItemNewWithType( VLC_OBJECT(p_playlist),
 553                                                  psz_tmp1, psz_tmp2, 0, NULL,
 554                                                  -1, ITEM_TYPE_VFILE );
 555
 556                 playlist_AddWhereverNeeded( p_playlist, p_input, p_parent,
 557                                             p_parent_category, VLC_FALSE,
 558                                             PLAYLIST_APPEND|PLAYLIST_PREPARSE);
 559             }
 560         }
 561         free( psz_uri );
 562     }
 563
 564     for( i = 0; i < i_extensions; i++ )
 565     {
 566         if( ppsz_extensions[i] )
 567             free( ppsz_extensions[i] );
 568     }
 569     if( ppsz_extensions ) free( ppsz_extensions );
 570     if( psz_ignore ) free( psz_ignore );
 571
 572     for( i = 0; i < i_dir_content; i++ )
 573         if( pp_dir_content[i] ) free( pp_dir_content[i] );
 574     if( pp_dir_content ) free( pp_dir_content );
 575     return VLC_SUCCESS;
 576 }