modules/lua/vlc.c

   1 /*****************************************************************************
   2  * vlc.c: Generic lua interface functions
   3  *****************************************************************************
   4  * Copyright (C) 2007-2008 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea at videolan tod org>
   8  *          Pierre d'Herbemont <pdherbemont # videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <assert.h>
  33 #include <sys/stat.h>
  34
  35 #define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
  36
  37 #include "vlc.h"
  38
  39 #include <vlc_plugin.h>
  40 #include <vlc_arrays.h>
  41 #include <vlc_charset.h>
  42 #include <vlc_fs.h>
  43 #include <vlc_services_discovery.h>
  44 #include <vlc_stream.h>
  45
  46 /*****************************************************************************
  47  * Module descriptor
  48  *****************************************************************************/
  49 #define INTF_TEXT N_("Lua interface")
  50 #define INTF_LONGTEXT N_("Lua interface module to load")
  51
  52 #define CONFIG_TEXT N_("Lua interface configuration")
  53 #define CONFIG_LONGTEXT N_("Lua interface configuration string. Format is: '[\"<interface module name>\"] = { <option> = <value>, ...}, ...'.")
  54 #define PASS_TEXT N_( "Password" )
  55 #define PASS_LONGTEXT N_( "A single password restricts access " \
  56     "to this interface." )
  57 #define SRC_TEXT N_( "Source directory" )
  58 #define SRC_LONGTEXT N_( "Source directory" )
  59 #define INDEX_TEXT N_( "Directory index" )
  60 #define INDEX_LONGTEXT N_( "Allow to build directory index" )
  61
  62 #define TELNETHOST_TEXT N_( "Host" )
  63 #define TELNETHOST_LONGTEXT N_( "This is the host on which the " \
  64     "interface will listen. It defaults to all network interfaces (0.0.0.0)." \
  65     " If you want this interface to be available only on the local " \
  66     "machine, enter \"127.0.0.1\"." )
  67 #define TELNETPORT_TEXT N_( "Port" )
  68 #define TELNETPORT_LONGTEXT N_( "This is the TCP port on which this " \
  69     "interface will listen. It defaults to 4212." )
  70 #define TELNETPWD_TEXT N_( "Password" )
  71 #define TELNETPWD_LONGTEXT N_( "A single password restricts access " \
  72     "to this interface." )
  73 #define RCHOST_TEXT N_("TCP command input")
  74 #define RCHOST_LONGTEXT N_("Accept commands over a socket rather than stdin. " \
  75             "You can set the address and port the interface will bind to." )
  76 #define CLIHOST_TEXT N_("CLI input")
  77 #define CLIHOST_LONGTEXT N_( "Accept commands from this source. " \
  78     "The CLI defaults to stdin (\"*console\"), but can also bind to a " \
  79     "plain TCP socket (\"localhost:4212\") or use the telnet protocol " \
  80     "(\"telnet://0.0.0.0:4212\")" )
  81
  82 static int vlc_sd_probe_Open( vlc_object_t * );
  83
  84 vlc_module_begin ()
  85         set_shortname( N_("Lua") )
  86         set_description( N_("Lua interpreter") )
  87         set_category( CAT_INTERFACE )
  88         set_subcategory( SUBCAT_INTERFACE_MAIN )
  89
  90         add_string( "lua-intf", "dummy", INTF_TEXT, INTF_LONGTEXT, false )
  91         add_string( "lua-config", "", CONFIG_TEXT, CONFIG_LONGTEXT, false )
  92         set_capability( "interface", 0 )
  93         set_callbacks( Open_LuaIntf, Close_LuaIntf )
  94         add_shortcut( "luaintf" )
  95
  96     add_submodule ()
  97         set_section( N_("Lua HTTP"), 0 )
  98             add_password("http-password", NULL, PASS_TEXT, PASS_LONGTEXT)
  99             add_string ( "http-src",  NULL, SRC_TEXT,  SRC_LONGTEXT,  true )
 100             add_bool   ( "http-index", false, INDEX_TEXT, INDEX_LONGTEXT, true )
 101         set_capability( "interface", 0 )
 102         set_callbacks( Open_LuaHTTP, Close_LuaIntf )
 103         add_shortcut( "luahttp", "http" )
 104         set_description( N_("Lua HTTP") )
 105
 106     add_submodule ()
 107         set_section( N_("Lua CLI"), 0 )
 108             add_string( "rc-host", NULL, RCHOST_TEXT, RCHOST_LONGTEXT, true )
 109             add_string( "cli-host", NULL, CLIHOST_TEXT, CLIHOST_LONGTEXT, true )
 110         set_capability( "interface", 25 )
 111         set_description( N_("Command-line interface") )
 112         set_callbacks( Open_LuaCLI, Close_LuaIntf )
 113 #ifndef _WIN32
 114         add_shortcut( "luacli", "luarc", "cli", "rc" )
 115 #else
 116         add_shortcut( "luacli", "luarc" )
 117 #endif
 118
 119     add_submodule ()
 120         set_section( N_("Lua Telnet"), 0 )
 121             add_string( "telnet-host", "localhost", TELNETHOST_TEXT,
 122                         TELNETHOST_LONGTEXT, true )
 123             add_integer( "telnet-port", TELNETPORT_DEFAULT, TELNETPORT_TEXT,
 124                          TELNETPORT_LONGTEXT, true )
 125                 change_integer_range( 1, 65535 )
 126             add_password("telnet-password", NULL, TELNETPWD_TEXT,
 127                          TELNETPWD_LONGTEXT)
 128         set_capability( "interface", 0 )
 129         set_callbacks( Open_LuaTelnet, Close_LuaIntf )
 130         set_description( N_("Lua Telnet") )
 131         add_shortcut( "luatelnet", "telnet" )
 132
 133     add_submodule ()
 134         set_shortname( N_( "Lua Meta Fetcher" ) )
 135         set_description( N_("Fetch meta data using lua scripts") )
 136         set_capability( "meta fetcher", 10 )
 137         set_callbacks( FetchMeta, NULL )
 138
 139     add_submodule ()
 140         set_shortname( N_( "Lua Meta Reader" ) )
 141         set_description( N_("Read meta data using lua scripts") )
 142         set_capability( "meta reader", 10 )
 143         set_callbacks( ReadMeta, NULL )
 144
 145     add_submodule ()
 146         add_shortcut( "luaplaylist" )
 147         set_shortname( N_("Lua Playlist") )
 148         set_description( N_("Lua Playlist Parser Interface") )
 149         set_capability( "stream_filter", 302 )
 150         set_callbacks( Import_LuaPlaylist, Close_LuaPlaylist )
 151
 152     add_submodule ()
 153         set_shortname( N_( "Lua Art" ) )
 154         set_description( N_("Fetch artwork using lua scripts") )
 155         set_capability( "art finder", 10 )
 156         set_callbacks( FindArt, NULL )
 157
 158     add_submodule ()
 159         set_shortname( N_("Lua Extension") )
 160         set_description( N_("Lua Extension") )
 161         add_shortcut( "luaextension" )
 162         set_capability( "extension", 1 )
 163         set_callbacks( Open_Extension, Close_Extension )
 164
 165     add_submodule ()
 166         set_description( N_("Lua SD Module") )
 167         add_shortcut( "luasd" )
 168         set_capability( "services_discovery", 0 )
 169         add_string( "lua-sd", "", NULL, NULL, false )
 170             change_volatile()
 171         set_callbacks( Open_LuaSD, Close_LuaSD )
 172
 173     VLC_SD_PROBE_SUBMODULE
 174
 175 vlc_module_end ()
 176
 177 /*****************************************************************************
 178  *
 179  *****************************************************************************/
 180 static const char *ppsz_lua_exts[] = { ".luac", ".lua", ".vle", NULL };
 181 static int file_select( const char *file )
 182 {
 183     int i = strlen( file );
 184     int j;
 185     for( j = 0; ppsz_lua_exts[j]; j++ )
 186     {
 187         int l = strlen( ppsz_lua_exts[j] );
 188         if( i >= l && !strcmp( file+i-l, ppsz_lua_exts[j] ) )
 189             return 1;
 190     }
 191     return 0;
 192 }
 193
 194 static int file_compare( const char **a, const char **b )
 195 {
 196     return strcmp( *a, *b );
 197 }
 198
 199 static char **vlclua_dir_list_append( char **restrict list, char *basedir,
 200                                       const char *luadirname )
 201 {
 202     if (unlikely(basedir == NULL))
 203         return list;
 204
 205     if (likely(asprintf(list, "%s"DIR_SEP"lua"DIR_SEP"%s",
 206                         basedir, luadirname) != -1))
 207         list++;
 208
 209     free(basedir);
 210     return list;
 211 }
 212
 213 int vlclua_dir_list(const char *luadirname, char ***restrict listp)
 214 {
 215     char **list = malloc(4 * sizeof(char *));
 216     if (unlikely(list == NULL))
 217         return VLC_EGENERIC;
 218
 219     *listp = list;
 220
 221     /* Lua scripts in user-specific data directory */
 222     list = vlclua_dir_list_append(list, config_GetUserDir(VLC_USERDATA_DIR),
 223                                   luadirname);
 224
 225     char *libdir = config_GetSysPath(VLC_PKG_LIBEXEC_DIR, NULL);
 226     char *datadir = config_GetSysPath(VLC_PKG_DATA_DIR, NULL);
 227     bool both = libdir != NULL && datadir != NULL && strcmp(libdir, datadir);
 228
 229     /* Tokenized Lua scripts in architecture-specific data directory */
 230     list = vlclua_dir_list_append(list, libdir, luadirname);
 231
 232     /* Source Lua Scripts in architecture-independent data directory */
 233     if (both || libdir == NULL)
 234         list = vlclua_dir_list_append(list, datadir, luadirname);
 235
 236     *list = NULL;
 237     return VLC_SUCCESS;
 238 }
 239
 240 void vlclua_dir_list_free( char **ppsz_dir_list )
 241 {
 242     for( char **ppsz_dir = ppsz_dir_list; *ppsz_dir; ppsz_dir++ )
 243         free( *ppsz_dir );
 244     free( ppsz_dir_list );
 245 }
 246
 247 /*****************************************************************************
 248  * Will execute func on all scripts in luadirname, and stop if func returns
 249  * success.
 250  *****************************************************************************/
 251 int vlclua_scripts_batch_execute( vlc_object_t *p_this,
 252                                   const char * luadirname,
 253                                   int (*func)(vlc_object_t *, const char *, const luabatch_context_t *),
 254                                   void * user_data)
 255 {
 256     char **ppsz_dir_list = NULL;
 257     int i_ret;
 258
 259     if( (i_ret = vlclua_dir_list( luadirname, &ppsz_dir_list )) != VLC_SUCCESS)
 260         return i_ret;
 261
 262     i_ret = VLC_EGENERIC;
 263     for( char **ppsz_dir = ppsz_dir_list; *ppsz_dir; ppsz_dir++ )
 264     {
 265         char **ppsz_filelist;
 266
 267         msg_Dbg( p_this, "Trying Lua scripts in %s", *ppsz_dir );
 268         int i_files = vlc_scandir( *ppsz_dir, &ppsz_filelist, file_select,
 269                                    file_compare );
 270         if( i_files < 0 )
 271             continue;
 272
 273         char **ppsz_file = ppsz_filelist;
 274         char **ppsz_fileend = ppsz_filelist + i_files;
 275
 276         while( ppsz_file < ppsz_fileend )
 277         {
 278             char *psz_filename;
 279
 280             if( asprintf( &psz_filename,
 281                           "%s" DIR_SEP "%s", *ppsz_dir, *ppsz_file ) == -1 )
 282                 psz_filename = NULL;
 283             free( *(ppsz_file++) );
 284
 285             if( likely(psz_filename != NULL) )
 286             {
 287                 msg_Dbg( p_this, "Trying Lua playlist script %s", psz_filename );
 288                 i_ret = func( p_this, psz_filename, user_data );
 289                 free( psz_filename );
 290                 if( i_ret == VLC_SUCCESS )
 291                     break;
 292             }
 293         }
 294
 295         while( ppsz_file < ppsz_fileend )
 296             free( *(ppsz_file++) );
 297         free( ppsz_filelist );
 298
 299         if( i_ret == VLC_SUCCESS )
 300             break;
 301     }
 302     vlclua_dir_list_free( ppsz_dir_list );
 303     return i_ret;
 304 }
 305
 306 char *vlclua_find_file( const char *psz_luadirname, const char *psz_name )
 307 {
 308     char **ppsz_dir_list = NULL;
 309     vlclua_dir_list( psz_luadirname, &ppsz_dir_list );
 310
 311     for( char **ppsz_dir = ppsz_dir_list; *ppsz_dir; ppsz_dir++ )
 312     {
 313         for( const char **ppsz_ext = ppsz_lua_exts; *ppsz_ext; ppsz_ext++ )
 314         {
 315             char *psz_filename;
 316             struct stat st;
 317
 318             if( asprintf( &psz_filename, "%s"DIR_SEP"%s%s", *ppsz_dir,
 319                           psz_name, *ppsz_ext ) < 0 )
 320             {
 321                 vlclua_dir_list_free( ppsz_dir_list );
 322                 return NULL;
 323             }
 324
 325             if( vlc_stat( psz_filename, &st ) == 0
 326                 && S_ISREG( st.st_mode ) )
 327             {
 328                 vlclua_dir_list_free( ppsz_dir_list );
 329                 return psz_filename;
 330             }
 331             free( psz_filename );
 332         }
 333     }
 334     vlclua_dir_list_free( ppsz_dir_list );
 335     return NULL;
 336 }
 337
 338 /*****************************************************************************
 339  * Meta data setters utility.
 340  * Playlist item table should be on top of the stack when these are called
 341  *****************************************************************************/
 342 #undef vlclua_read_meta_data
 343 void vlclua_read_meta_data( vlc_object_t *p_this, lua_State *L,
 344                             input_item_t *p_input )
 345 {
 346 #define TRY_META( a, b )                                        \
 347     lua_getfield( L, -1, a );                                   \
 348     if( lua_isstring( L, -1 ) &&                                \
 349         strcmp( lua_tostring( L, -1 ), "" ) )                   \
 350     {                                                           \
 351         char *psz_value = strdup( lua_tostring( L, -1 ) );      \
 352         EnsureUTF8( psz_value );                                \
 353         msg_Dbg( p_this, #b ": %s", psz_value );                \
 354         input_item_Set ## b ( p_input, psz_value );             \
 355         free( psz_value );                                      \
 356     }                                                           \
 357     lua_pop( L, 1 ); /* pop a */
 358     TRY_META( "title", Title );
 359     TRY_META( "artist", Artist );
 360     TRY_META( "genre", Genre );
 361     TRY_META( "copyright", Copyright );
 362     TRY_META( "album", Album );
 363     TRY_META( "tracknum", TrackNum );
 364     TRY_META( "description", Description );
 365     TRY_META( "rating", Rating );
 366     TRY_META( "date", Date );
 367     TRY_META( "setting", Setting );
 368     TRY_META( "url", URL );
 369     TRY_META( "language",  Language );
 370     TRY_META( "nowplaying", NowPlaying );
 371     TRY_META( "publisher",  Publisher );
 372     TRY_META( "encodedby",  EncodedBy );
 373     TRY_META( "arturl",     ArtURL );
 374     TRY_META( "trackid",    TrackID );
 375     TRY_META( "director",   Director );
 376     TRY_META( "season",     Season );
 377     TRY_META( "episode",    Episode );
 378     TRY_META( "show_name",  ShowName );
 379     TRY_META( "actors",     Actors );
 380 }
 381
 382 #undef vlclua_read_custom_meta_data
 383 void vlclua_read_custom_meta_data( vlc_object_t *p_this, lua_State *L,
 384                                      input_item_t *p_input )
 385 {
 386     /* Lock the input item and create the meta table if needed */
 387     vlc_mutex_lock( &p_input->lock );
 388
 389     if( !p_input->p_meta )
 390         p_input->p_meta = vlc_meta_New();
 391
 392     /* ... item */
 393     lua_getfield( L, -1, "meta" );
 394     /* ... item meta */
 395     if( lua_istable( L, -1 ) )
 396     {
 397         lua_pushnil( L );
 398         /* ... item meta nil */
 399         while( lua_next( L, -2 ) )
 400         {
 401             /* ... item meta key value */
 402             if( !lua_isstring( L, -2 ) || !lua_isstring( L, -1 ) )
 403             {
 404                 msg_Err( p_this, "'meta' keys and values must be strings");
 405                 lua_pop( L, 1 ); /* pop "value" */
 406                 continue;
 407             }
 408             const char *psz_key = lua_tostring( L, -2 );
 409             const char *psz_value = lua_tostring( L, -1 );
 410
 411             vlc_meta_AddExtra( p_input->p_meta, psz_key, psz_value );
 412
 413             lua_pop( L, 1 ); /* pop "value" */
 414         }
 415     }
 416     lua_pop( L, 1 ); /* pop "meta" */
 417     /* ... item -> back to original stack */
 418
 419     vlc_mutex_unlock( &p_input->lock );
 420 }
 421
 422 /*****************************************************************************
 423  * Playlist utilities
 424  ****************************************************************************/
 425 /**
 426  * Playlist item table should be on top of the stack when this is called
 427  */
 428 #undef vlclua_read_options
 429 void vlclua_read_options( vlc_object_t *p_this, lua_State *L,
 430                             int *pi_options, char ***pppsz_options )
 431 {
 432     lua_getfield( L, -1, "options" );
 433     if( lua_istable( L, -1 ) )
 434     {
 435         lua_pushnil( L );
 436         while( lua_next( L, -2 ) )
 437         {
 438             if( lua_isstring( L, -1 ) )
 439             {
 440                 char *psz_option = strdup( lua_tostring( L, -1 ) );
 441                 msg_Dbg( p_this, "Option: %s", psz_option );
 442                 TAB_APPEND( *pi_options, *pppsz_options, psz_option );
 443             }
 444             else
 445             {
 446                 msg_Warn( p_this, "Option should be a string" );
 447             }
 448             lua_pop( L, 1 ); /* pop option */
 449         }
 450     }
 451     lua_pop( L, 1 ); /* pop "options" */
 452 }
 453
 454 input_item_t *vlclua_read_input_item(vlc_object_t *obj, lua_State *L)
 455 {
 456     if (!lua_istable(L, -1))
 457     {
 458         msg_Warn(obj, "Playlist item should be a table" );
 459         return NULL;
 460     }
 461
 462     lua_getfield(L, -1, "path");
 463
 464     /* playlist key item path */
 465     if (!lua_isstring(L, -1))
 466     {
 467         lua_pop(L, 1); /* pop "path" */
 468         msg_Warn(obj, "Playlist item's path should be a string");
 469         return NULL;
 470     }
 471
 472     /* Read path and name */
 473     const char *path = lua_tostring(L, -1);
 474     msg_Dbg(obj, "Path: %s", path);
 475
 476     const char *name = NULL;
 477     lua_getfield(L, -2, "name");
 478     if (lua_isstring(L, -1))
 479     {
 480         name = lua_tostring(L, -1);
 481         msg_Dbg(obj, "Name: %s", name);
 482     }
 483     else if (!lua_isnil(L, -1))
 484         msg_Warn(obj, "Playlist item name should be a string" );
 485
 486     /* Read duration */
 487     vlc_tick_t duration = -1;
 488
 489     lua_getfield( L, -3, "duration" );
 490     if (lua_isnumber(L, -1))
 491         duration = vlc_tick_from_sec( lua_tonumber(L, -1) );
 492     else if (!lua_isnil(L, -1))
 493         msg_Warn(obj, "Playlist item duration should be a number (seconds)");
 494     lua_pop( L, 1 ); /* pop "duration" */
 495
 496     /* Read options: item must be on top of stack */
 497     char **optv = NULL;
 498     int optc = 0;
 499
 500     lua_pushvalue(L, -3);
 501     vlclua_read_options(obj, L, &optc, &optv);
 502
 503     /* Create input item */
 504     input_item_t *item = input_item_NewExt(path, name, duration,
 505                                            ITEM_TYPE_UNKNOWN,
 506                                            ITEM_NET_UNKNOWN);
 507     if (unlikely(item == NULL))
 508         goto out;
 509
 510     input_item_AddOptions(item, optc, (const char **)optv,
 511                           VLC_INPUT_OPTION_TRUSTED);
 512     lua_pop(L, 3); /* pop "path name item" */
 513     /* playlist key item */
 514
 515     /* Read meta data: item must be on top of stack */
 516     vlclua_read_meta_data(obj, L, item);
 517
 518     /* copy the psz_name to the meta data, if "Title" is still empty */
 519     char* title = input_item_GetTitle(item);
 520     if (title == NULL)
 521         input_item_SetTitle(item, name);
 522     free(title);
 523
 524     /* Read custom meta data: item must be on top of stack*/
 525     vlclua_read_custom_meta_data(obj, L, item);
 526
 527 out:
 528     while (optc > 0)
 529            free(optv[--optc]);
 530     free(optv);
 531     return item;
 532 }
 533
 534 static int vlc_sd_probe_Open( vlc_object_t *obj )
 535 {
 536     if( lua_Disabled( obj ) )
 537         return VLC_EGENERIC;
 538
 539     vlc_dictionary_t name_d;
 540
 541     char **ppsz_dir_list;
 542     if( vlclua_dir_list( "sd", &ppsz_dir_list ) )
 543         return VLC_ENOMEM;
 544
 545     vlc_dictionary_init( &name_d, 32 );
 546     for( char **ppsz_dir = ppsz_dir_list; *ppsz_dir; ppsz_dir++ )
 547     {
 548         char **ppsz_filelist;
 549         int i_files = vlc_scandir( *ppsz_dir, &ppsz_filelist, file_select,
 550                                     file_compare );
 551         if( i_files < 1 ) continue;
 552
 553         for( char **ppsz_file = ppsz_filelist;
 554              ppsz_file < ppsz_filelist + i_files; ppsz_file++ )
 555         {
 556             char *temp = strchr( *ppsz_file, '.' );
 557             if( temp )
 558                 *temp = '\0';
 559
 560             if( !vlc_dictionary_has_key( &name_d, *ppsz_file ) )
 561                 vlc_dictionary_insert( &name_d, *ppsz_file, &name_d );
 562             free( *ppsz_file );
 563         }
 564         free( ppsz_filelist );
 565     }
 566     vlclua_dir_list_free( ppsz_dir_list );
 567
 568     int r = VLC_PROBE_CONTINUE;
 569     char **names = vlc_dictionary_all_keys( &name_d );
 570     if( names != NULL )
 571     {
 572         for( char **name = names; *name; ++name )
 573         {
 574             r = vlclua_probe_sd( obj, *name );
 575             if( r != VLC_PROBE_CONTINUE )
 576                 break;
 577         }
 578
 579         for( char **name = names; *name; ++name )
 580             free( *name );
 581
 582         free( names );
 583     }
 584     vlc_dictionary_clear( &name_d, NULL, NULL );
 585
 586     return r;
 587 }
 588
 589 static int vlclua_add_modules_path_inner( lua_State *L, const char *psz_path )
 590 {
 591     int count = 0;
 592     for( const char **ppsz_ext = ppsz_lua_exts; *ppsz_ext; ppsz_ext++ )
 593     {
 594         lua_pushfstring( L, "%s"DIR_SEP"modules"DIR_SEP"?%s;",
 595                          psz_path, *ppsz_ext );
 596         count ++;
 597     }
 598
 599     return count;
 600 }
 601
 602 int vlclua_add_modules_path( lua_State *L, const char *psz_filename )
 603 {
 604     /* Setup the module search path:
 605      *   * "The script's directory"/modules
 606      *   * "The script's parent directory"/modules
 607      *   * and so on for all the next directories in the directory list
 608      */
 609     char *psz_path = strdup( psz_filename );
 610     if( !psz_path )
 611         return 1;
 612
 613     char *psz_char = strrchr( psz_path, DIR_SEP_CHAR );
 614     if( !psz_char )
 615     {
 616         free( psz_path );
 617         return 1;
 618     }
 619     *psz_char = '\0';
 620
 621     /* psz_path now holds the file's directory */
 622     psz_char = strrchr( psz_path, DIR_SEP_CHAR );
 623     if( !psz_char )
 624     {
 625         free( psz_path );
 626         return 1;
 627     }
 628     *psz_char = '\0';
 629
 630     /* Push package on stack */
 631     int count = 0;
 632     lua_getglobal( L, "package" );
 633
 634     /* psz_path now holds the file's parent directory */
 635     count += vlclua_add_modules_path_inner( L, psz_path );
 636     *psz_char = DIR_SEP_CHAR;
 637
 638     /* psz_path now holds the file's directory */
 639     count += vlclua_add_modules_path_inner( L, psz_path );
 640
 641     char **ppsz_dir_list = NULL;
 642     vlclua_dir_list( psz_char+1/* gruik? */, &ppsz_dir_list );
 643     char **ppsz_dir = ppsz_dir_list;
 644
 645     for( ; *ppsz_dir && strcmp( *ppsz_dir, psz_path ); ppsz_dir++ );
 646     free( psz_path );
 647
 648     for( ; *ppsz_dir; ppsz_dir++ )
 649     {
 650         psz_path = *ppsz_dir;
 651         /* FIXME: doesn't work well with meta/... modules due to the double
 652          * directory depth */
 653         psz_char = strrchr( psz_path, DIR_SEP_CHAR );
 654         if( !psz_char )
 655         {
 656             vlclua_dir_list_free( ppsz_dir_list );
 657             return 1;
 658         }
 659
 660         *psz_char = '\0';
 661         count += vlclua_add_modules_path_inner( L, psz_path );
 662         *psz_char = DIR_SEP_CHAR;
 663         count += vlclua_add_modules_path_inner( L, psz_path );
 664     }
 665
 666     lua_getfield( L, -(count+1), "path" ); /* Get package.path */
 667     lua_concat( L, count+1 ); /* Concat vlc module paths and package.path */
 668     lua_setfield( L, -2, "path"); /* Set package.path */
 669     lua_pop( L, 1 ); /* Pop the package module */
 670
 671     vlclua_dir_list_free( ppsz_dir_list );
 672     return 0;
 673 }
 674
 675 /** Replacement for luaL_dofile, using VLC's input capabilities */
 676 int vlclua_dofile( vlc_object_t *p_this, lua_State *L, const char *curi )
 677 {
 678     char *uri = ToLocaleDup( curi );
 679     if( !strstr( uri, "://" ) ) {
 680         int ret = luaL_dofile( L, uri );
 681         free( uri );
 682         return ret;
 683     }
 684     if( !strncasecmp( uri, "file://", 7 ) ) {
 685         int ret = luaL_dofile( L, uri + 7 );
 686         free( uri );
 687         return ret;
 688     }
 689     stream_t *s = vlc_stream_NewURL( p_this, uri );
 690     if( !s )
 691     {
 692         free( uri );
 693         return 1;
 694     }
 695     int64_t i_size = stream_Size( s );
 696     char *p_buffer = ( i_size > 0 ) ? malloc( i_size ) : NULL;
 697     if( !p_buffer )
 698     {
 699         // FIXME: read the whole stream until we reach the end (if no size)
 700         vlc_stream_Delete( s );
 701         free( uri );
 702         return 1;
 703     }
 704     int64_t i_read = vlc_stream_Read( s, p_buffer, (int) i_size );
 705     int i_ret = ( i_read == i_size ) ? 0 : 1;
 706     if( !i_ret )
 707         i_ret = luaL_loadbuffer( L, p_buffer, (size_t) i_size, uri );
 708     if( !i_ret )
 709         i_ret = lua_pcall( L, 0, LUA_MULTRET, 0 );
 710     vlc_stream_Delete( s );
 711     free( p_buffer );
 712     free( uri );
 713     return i_ret;
 714 }