src/config/core.c

   1 /*****************************************************************************
   2  * core.c management of the modules configuration
   3  *****************************************************************************
   4  * Copyright (C) 2001-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Gildas Bazin <gbazin@videolan.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 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc/vlc.h>
  29 #include "../libvlc.h"
  30 #include "vlc_keys.h"
  31 #include "vlc_charset.h"
  32 #include "vlc_configuration.h"
  33
  34 #include <errno.h>                                                  /* errno */
  35 #include <assert.h>
  36 #include <limits.h>
  37
  38 #ifdef HAVE_UNISTD_H
  39 #    include <unistd.h>                                          /* getuid() */
  40 #endif
  41
  42 #ifdef HAVE_GETOPT_LONG
  43 #   ifdef HAVE_GETOPT_H
  44 #       include <getopt.h>                                       /* getopt() */
  45 #   endif
  46 #else
  47 #   include "../extras/getopt.h"
  48 #endif
  49
  50 #if defined(HAVE_GETPWUID)
  51 #   include <pwd.h>                                            /* getpwuid() */
  52 #endif
  53
  54 #if defined( HAVE_SYS_STAT_H )
  55 #   include <sys/stat.h>
  56 #endif
  57 #if defined( HAVE_SYS_TYPES_H )
  58 #   include <sys/types.h>
  59 #endif
  60 #if defined( WIN32 )
  61 #   if !defined( UNDER_CE )
  62 #       include <direct.h>
  63 #   endif
  64 #include <tchar.h>
  65 #endif
  66
  67 #include "configuration.h"
  68 #include "modules/modules.h"
  69
  70 static inline char *strdupnull (const char *src)
  71 {
  72     return src ? strdup (src) : NULL;
  73 }
  74
  75 static inline char *_strdupnull (const char *src)
  76 {
  77     return src ? strdup (_(src)) : NULL;
  78 }
  79
  80 /* Item types that use a string value (i.e. serialized in the module cache) */
  81 int IsConfigStringType (int type)
  82 {
  83     static const unsigned char config_types[] =
  84     {
  85         CONFIG_ITEM_STRING, CONFIG_ITEM_FILE, CONFIG_ITEM_MODULE,
  86         CONFIG_ITEM_DIRECTORY, CONFIG_ITEM_MODULE_CAT, CONFIG_ITEM_PASSWORD,
  87         CONFIG_ITEM_MODULE_LIST, CONFIG_ITEM_MODULE_LIST_CAT
  88     };
  89
  90     /* NOTE: this needs to be changed if we ever get more than 255 types */
  91     return memchr (config_types, type, sizeof (config_types)) != NULL;
  92 }
  93
  94
  95 int IsConfigIntegerType (int type)
  96 {
  97     static const unsigned char config_types[] =
  98     {
  99         CONFIG_ITEM_INTEGER, CONFIG_ITEM_KEY, CONFIG_ITEM_BOOL,
 100         CONFIG_CATEGORY, CONFIG_SUBCATEGORY
 101     };
 102
 103     return memchr (config_types, type, sizeof (config_types)) != NULL;
 104 }
 105
 106
 107 /*****************************************************************************
 108  * config_GetType: get the type of a variable (bool, int, float, string)
 109  *****************************************************************************
 110  * This function is used to get the type of a variable from its name.
 111  * Beware, this is quite slow.
 112  *****************************************************************************/
 113 int __config_GetType( vlc_object_t *p_this, const char *psz_name )
 114 {
 115     module_config_t *p_config;
 116     int i_type;
 117
 118     p_config = config_FindConfig( p_this, psz_name );
 119
 120     /* sanity checks */
 121     if( !p_config )
 122     {
 123         return 0;
 124     }
 125
 126     switch( p_config->i_type )
 127     {
 128     case CONFIG_ITEM_BOOL:
 129         i_type = VLC_VAR_BOOL;
 130         break;
 131
 132     case CONFIG_ITEM_INTEGER:
 133     case CONFIG_ITEM_KEY:
 134         i_type = VLC_VAR_INTEGER;
 135         break;
 136
 137     case CONFIG_ITEM_FLOAT:
 138         i_type = VLC_VAR_FLOAT;
 139         break;
 140
 141     case CONFIG_ITEM_MODULE:
 142     case CONFIG_ITEM_MODULE_CAT:
 143     case CONFIG_ITEM_MODULE_LIST:
 144     case CONFIG_ITEM_MODULE_LIST_CAT:
 145         i_type = VLC_VAR_MODULE;
 146         break;
 147
 148     case CONFIG_ITEM_STRING:
 149         i_type = VLC_VAR_STRING;
 150         break;
 151
 152     case CONFIG_ITEM_PASSWORD:
 153         i_type = VLC_VAR_STRING;
 154         break;
 155
 156     case CONFIG_ITEM_FILE:
 157         i_type = VLC_VAR_FILE;
 158         break;
 159
 160     case CONFIG_ITEM_DIRECTORY:
 161         i_type = VLC_VAR_DIRECTORY;
 162         break;
 163
 164     default:
 165         i_type = 0;
 166         break;
 167     }
 168
 169     return i_type;
 170 }
 171
 172 /*****************************************************************************
 173  * config_GetInt: get the value of an int variable
 174  *****************************************************************************
 175  * This function is used to get the value of variables which are internally
 176  * represented by an integer (CONFIG_ITEM_INTEGER and
 177  * CONFIG_ITEM_BOOL).
 178  *****************************************************************************/
 179 int __config_GetInt( vlc_object_t *p_this, const char *psz_name )
 180 {
 181     module_config_t *p_config;
 182
 183     p_config = config_FindConfig( p_this, psz_name );
 184
 185     /* sanity checks */
 186     if( !p_config )
 187     {
 188         msg_Err( p_this, "option %s does not exist", psz_name );
 189         return -1;
 190     }
 191
 192     if (!IsConfigIntegerType (p_config->i_type))
 193     {
 194         msg_Err( p_this, "option %s does not refer to an int", psz_name );
 195         return -1;
 196     }
 197
 198     return p_config->value.i;
 199 }
 200
 201 /*****************************************************************************
 202  * config_GetFloat: get the value of a float variable
 203  *****************************************************************************
 204  * This function is used to get the value of variables which are internally
 205  * represented by a float (CONFIG_ITEM_FLOAT).
 206  *****************************************************************************/
 207 float __config_GetFloat( vlc_object_t *p_this, const char *psz_name )
 208 {
 209     module_config_t *p_config;
 210
 211     p_config = config_FindConfig( p_this, psz_name );
 212
 213     /* sanity checks */
 214     if( !p_config )
 215     {
 216         msg_Err( p_this, "option %s does not exist", psz_name );
 217         return -1;
 218     }
 219
 220     if (!IsConfigFloatType (p_config->i_type))
 221     {
 222         msg_Err( p_this, "option %s does not refer to a float", psz_name );
 223         return -1;
 224     }
 225
 226     return p_config->value.f;
 227 }
 228
 229 /*****************************************************************************
 230  * config_GetPsz: get the string value of a string variable
 231  *****************************************************************************
 232  * This function is used to get the value of variables which are internally
 233  * represented by a string (CONFIG_ITEM_STRING, CONFIG_ITEM_FILE,
 234  * CONFIG_ITEM_DIRECTORY, CONFIG_ITEM_PASSWORD, and CONFIG_ITEM_MODULE).
 235  *
 236  * Important note: remember to free() the returned char* because it's a
 237  *   duplicate of the actual value. It isn't safe to return a pointer to the
 238  *   actual value as it can be modified at any time.
 239  *****************************************************************************/
 240 char * __config_GetPsz( vlc_object_t *p_this, const char *psz_name )
 241 {
 242     module_config_t *p_config;
 243
 244     p_config = config_FindConfig( p_this, psz_name );
 245
 246     /* sanity checks */
 247     if( !p_config )
 248     {
 249         msg_Err( p_this, "option %s does not exist", psz_name );
 250         return NULL;
 251     }
 252
 253     if (!IsConfigStringType (p_config->i_type))
 254     {
 255         msg_Err( p_this, "option %s does not refer to a string", psz_name );
 256         return NULL;
 257     }
 258
 259     /* return a copy of the string */
 260     vlc_mutex_lock( p_config->p_lock );
 261     char *psz_value = strdupnull (p_config->value.psz);
 262     vlc_mutex_unlock( p_config->p_lock );
 263
 264     return psz_value;
 265 }
 266
 267 /*****************************************************************************
 268  * config_PutPsz: set the string value of a string variable
 269  *****************************************************************************
 270  * This function is used to set the value of variables which are internally
 271  * represented by a string (CONFIG_ITEM_STRING, CONFIG_ITEM_FILE,
 272  * CONFIG_ITEM_DIRECTORY, CONFIG_ITEM_PASSWORD, and CONFIG_ITEM_MODULE).
 273  *****************************************************************************/
 274 void __config_PutPsz( vlc_object_t *p_this,
 275                       const char *psz_name, const char *psz_value )
 276 {
 277     module_config_t *p_config;
 278     vlc_value_t oldval, val;
 279
 280     p_config = config_FindConfig( p_this, psz_name );
 281
 282
 283     /* sanity checks */
 284     if( !p_config )
 285     {
 286         msg_Warn( p_this, "option %s does not exist", psz_name );
 287         return;
 288     }
 289
 290     if (!IsConfigStringType (p_config->i_type))
 291     {
 292         msg_Err( p_this, "option %s does not refer to a string", psz_name );
 293         return;
 294     }
 295
 296     vlc_mutex_lock( p_config->p_lock );
 297
 298     /* backup old value */
 299     oldval.psz_string = (char *)p_config->value.psz;
 300
 301     if ((psz_value != NULL) && *psz_value)
 302         p_config->value.psz = strdup (psz_value);
 303     else
 304         p_config->value.psz = NULL;
 305
 306     p_config->b_dirty = VLC_TRUE;
 307
 308     val.psz_string = (char *)p_config->value.psz;
 309
 310     vlc_mutex_unlock( p_config->p_lock );
 311
 312     if( p_config->pf_callback )
 313     {
 314         p_config->pf_callback( p_this, psz_name, oldval, val,
 315                                p_config->p_callback_data );
 316     }
 317
 318     /* free old string */
 319     if( oldval.psz_string ) free( oldval.psz_string );
 320 }
 321
 322 /*****************************************************************************
 323  * config_PutInt: set the integer value of an int variable
 324  *****************************************************************************
 325  * This function is used to set the value of variables which are internally
 326  * represented by an integer (CONFIG_ITEM_INTEGER and
 327  * CONFIG_ITEM_BOOL).
 328  *****************************************************************************/
 329 void __config_PutInt( vlc_object_t *p_this, const char *psz_name, int i_value )
 330 {
 331     module_config_t *p_config;
 332     vlc_value_t oldval, val;
 333
 334     p_config = config_FindConfig( p_this, psz_name );
 335
 336     /* sanity checks */
 337     if( !p_config )
 338     {
 339         msg_Warn( p_this, "option %s does not exist", psz_name );
 340         return;
 341     }
 342
 343     if (!IsConfigIntegerType (p_config->i_type))
 344     {
 345         msg_Err( p_this, "option %s does not refer to an int", psz_name );
 346         return;
 347     }
 348
 349     /* backup old value */
 350     oldval.i_int = p_config->value.i;
 351
 352     /* if i_min == i_max == 0, then do not use them */
 353     if ((p_config->min.i == 0) && (p_config->max.i == 0))
 354     {
 355         p_config->value.i = i_value;
 356     }
 357     else if (i_value < p_config->min.i)
 358     {
 359         p_config->value.i = p_config->min.i;
 360     }
 361     else if (i_value > p_config->max.i)
 362     {
 363         p_config->value.i = p_config->max.i;
 364     }
 365     else
 366     {
 367         p_config->value.i = i_value;
 368     }
 369
 370     p_config->b_dirty = VLC_TRUE;
 371
 372     val.i_int = p_config->value.i;
 373
 374     if( p_config->pf_callback )
 375     {
 376         p_config->pf_callback( p_this, psz_name, oldval, val,
 377                                p_config->p_callback_data );
 378     }
 379 }
 380
 381 /*****************************************************************************
 382  * config_PutFloat: set the value of a float variable
 383  *****************************************************************************
 384  * This function is used to set the value of variables which are internally
 385  * represented by a float (CONFIG_ITEM_FLOAT).
 386  *****************************************************************************/
 387 void __config_PutFloat( vlc_object_t *p_this,
 388                         const char *psz_name, float f_value )
 389 {
 390     module_config_t *p_config;
 391     vlc_value_t oldval, val;
 392
 393     p_config = config_FindConfig( p_this, psz_name );
 394
 395     /* sanity checks */
 396     if( !p_config )
 397     {
 398         msg_Warn( p_this, "option %s does not exist", psz_name );
 399         return;
 400     }
 401
 402     if (!IsConfigFloatType (p_config->i_type))
 403     {
 404         msg_Err( p_this, "option %s does not refer to a float", psz_name );
 405         return;
 406     }
 407
 408     /* backup old value */
 409     oldval.f_float = p_config->value.f;
 410
 411     /* if f_min == f_max == 0, then do not use them */
 412     if ((p_config->min.f == 0) && (p_config->max.f == 0))
 413     {
 414         p_config->value.f = f_value;
 415     }
 416     else if (f_value < p_config->min.f)
 417     {
 418         p_config->value.f = p_config->min.f;
 419     }
 420     else if (f_value > p_config->max.f)
 421     {
 422         p_config->value.f = p_config->max.f;
 423     }
 424     else
 425     {
 426         p_config->value.f = f_value;
 427     }
 428
 429     p_config->b_dirty = VLC_TRUE;
 430
 431     val.f_float = p_config->value.f;
 432
 433     if( p_config->pf_callback )
 434     {
 435         p_config->pf_callback( p_this, psz_name, oldval, val,
 436                                p_config->p_callback_data );
 437     }
 438 }
 439
 440 /*****************************************************************************
 441  * config_FindConfig: find the config structure associated with an option.
 442  *****************************************************************************
 443  * FIXME: This function really needs to be optimized.
 444  * FIXME: And now even more.
 445  *****************************************************************************/
 446 module_config_t *config_FindConfig( vlc_object_t *p_this, const char *psz_name )
 447 {
 448     vlc_list_t *p_list;
 449     int i_index;
 450
 451     if( !psz_name ) return NULL;
 452
 453     p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
 454
 455     for( i_index = 0; i_index < p_list->i_count; i_index++ )
 456     {
 457         module_config_t *p_item, *p_end;
 458         module_t *p_parser = (module_t *)p_list->p_values[i_index].p_object;
 459
 460         if( !p_parser->i_config_items )
 461             continue;
 462
 463         for( p_item = p_parser->p_config, p_end = p_item + p_parser->confsize;
 464              p_item < p_end;
 465              p_item++ )
 466         {
 467             if( p_item->i_type & CONFIG_HINT )
 468                 /* ignore hints */
 469                 continue;
 470             if( !strcmp( psz_name, p_item->psz_name )
 471              || ( p_item->psz_oldname
 472               && !strcmp( psz_name, p_item->psz_oldname ) ) )
 473             {
 474                 vlc_list_release( p_list );
 475                 return p_item;
 476             }
 477         }
 478     }
 479
 480     vlc_list_release( p_list );
 481
 482     return NULL;
 483 }
 484
 485 /*****************************************************************************
 486  * config_Free: frees a duplicated module's configuration data.
 487  *****************************************************************************
 488  * This function frees all the data duplicated by config_Duplicate.
 489  *****************************************************************************/
 490 void config_Free( module_t *p_module )
 491 {
 492     int i;
 493
 494     for (size_t j = 0; j < p_module->confsize; j++)
 495     {
 496         module_config_t *p_item = p_module->p_config + j;
 497
 498         free( p_item->psz_type );
 499         free( p_item->psz_name );
 500         free( p_item->psz_text );
 501         free( p_item->psz_longtext );
 502         free( p_item->psz_oldname );
 503
 504         if (IsConfigStringType (p_item->i_type))
 505         {
 506             free (p_item->value.psz);
 507             free (p_item->orig.psz);
 508             free (p_item->saved.psz);
 509         }
 510
 511         if( p_item->ppsz_list )
 512             for( i = 0; i < p_item->i_list; i++ )
 513                 free( p_item->ppsz_list[i] );
 514         if( p_item->ppsz_list_text )
 515             for( i = 0; i < p_item->i_list; i++ )
 516                 free( p_item->ppsz_list_text[i] );
 517         free( p_item->ppsz_list );
 518         free( p_item->ppsz_list_text );
 519         free( p_item->pi_list );
 520
 521         if( p_item->i_action )
 522         {
 523             for( i = 0; i < p_item->i_action; i++ )
 524             {
 525                 free( p_item->ppsz_action_text[i] );
 526             }
 527             free( p_item->ppf_action );
 528             free( p_item->ppsz_action_text );
 529         }
 530     }
 531
 532     free (p_module->p_config);
 533     p_module->p_config = NULL;
 534 }
 535
 536 /*****************************************************************************
 537  * config_SetCallbacks: sets callback functions in the duplicate p_config.
 538  *****************************************************************************
 539  * Unfortunatly we cannot work directly with the module's config data as
 540  * this module might be unloaded from memory at any time (remember HideModule).
 541  * This is why we need to duplicate callbacks each time we reload the module.
 542  *****************************************************************************/
 543 void config_SetCallbacks( module_config_t *p_new, module_config_t *p_orig,
 544                           size_t n )
 545 {
 546     for (size_t i = 0; i < n; i++)
 547     {
 548         p_new->pf_callback = p_orig->pf_callback;
 549         p_new++;
 550         p_orig++;
 551     }
 552 }
 553
 554 /*****************************************************************************
 555  * config_UnsetCallbacks: unsets callback functions in the duplicate p_config.
 556  *****************************************************************************
 557  * We simply undo what we did in config_SetCallbacks.
 558  *****************************************************************************/
 559 void config_UnsetCallbacks( module_config_t *p_new, size_t n )
 560 {
 561     for (size_t i = 0; i < n; i++)
 562     {
 563         p_new->pf_callback = NULL;
 564         p_new++;
 565     }
 566 }
 567
 568 /*****************************************************************************
 569  * config_ResetAll: reset the configuration data for all the modules.
 570  *****************************************************************************/
 571 void __config_ResetAll( vlc_object_t *p_this )
 572 {
 573     int i_index;
 574     vlc_list_t *p_list;
 575     module_t *p_module;
 576
 577     /* Acquire config file lock */
 578     vlc_mutex_lock( &p_this->p_libvlc->config_lock );
 579
 580     p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
 581
 582     for( i_index = 0; i_index < p_list->i_count; i_index++ )
 583     {
 584         p_module = (module_t *)p_list->p_values[i_index].p_object ;
 585         if( p_module->b_submodule ) continue;
 586
 587         for (size_t i = 0; i < p_module->confsize; i++ )
 588         {
 589             if (IsConfigIntegerType (p_module->p_config[i].i_type))
 590                 p_module->p_config[i].value.i = p_module->p_config[i].orig.i;
 591             else
 592             if (IsConfigFloatType (p_module->p_config[i].i_type))
 593                 p_module->p_config[i].value.f = p_module->p_config[i].orig.f;
 594             else
 595             if (IsConfigStringType (p_module->p_config[i].i_type))
 596             {
 597                 free ((char *)p_module->p_config[i].value.psz);
 598                 p_module->p_config[i].value.psz =
 599                         strdupnull (p_module->p_config[i].orig.psz);
 600             }
 601         }
 602     }
 603
 604     vlc_list_release( p_list );
 605     vlc_mutex_unlock( &p_this->p_libvlc->config_lock );
 606 }
 607
 608 /**
 609  * config_GetDataDir: find directory where shared data is installed
 610  *
 611  * @return a string (always succeeds).
 612  */
 613 const char *config_GetDataDir( void )
 614 {
 615 #if defined (WIN32) || defined (UNDER_CE)
 616     return vlc_global()->psz_vlcpath;
 617 #elif defined(__APPLE__) || defined (SYS_BEOS)
 618     static char path[PATH_MAX] = "";
 619
 620     if( *path == '\0' )
 621     {
 622         snprintf( path, sizeof( path ), "%s/share",
 623                   vlc_global()->psz_vlcpath );
 624         path[sizeof( path ) - 1] = '\0';
 625     }
 626     return path;
 627 #else
 628     return DATA_PATH;
 629 #endif
 630 }
 631
 632 /*****************************************************************************
 633  * config_GetHomeDir, config_GetUserDir: find the user's home directory.
 634  *****************************************************************************
 635  * This function will try by different ways to find the user's home path.
 636  * Note that this function is not reentrant, it should be called only once
 637  * at the beginning of main where the result will be stored for later use.
 638  *****************************************************************************/
 639 static char *GetDir( vlc_bool_t b_appdata )
 640 {
 641     const char *psz_localhome = NULL;
 642
 643 #if defined(WIN32) && !defined(UNDER_CE)
 644     typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
 645                                                LPWSTR );
 646 #ifndef CSIDL_FLAG_CREATE
 647 #   define CSIDL_FLAG_CREATE 0x8000
 648 #endif
 649 #ifndef CSIDL_APPDATA
 650 #   define CSIDL_APPDATA 0x1A
 651 #endif
 652 #ifndef CSIDL_PROFILE
 653 #   define CSIDL_PROFILE 0x28
 654 #endif
 655 #ifndef SHGFP_TYPE_CURRENT
 656 #   define SHGFP_TYPE_CURRENT 0
 657 #endif
 658
 659     HINSTANCE shfolder_dll;
 660     SHGETFOLDERPATH SHGetFolderPath ;
 661
 662     /* load the shfolder dll to retrieve SHGetFolderPath */
 663     if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL )
 664     {
 665         SHGetFolderPath = (void *)GetProcAddress( shfolder_dll,
 666                                                   _T("SHGetFolderPathW") );
 667         if ( SHGetFolderPath != NULL )
 668         {
 669             wchar_t whomedir[MAX_PATH];
 670
 671             /* get the "Application Data" folder for the current user */
 672             if( S_OK == SHGetFolderPath( NULL,
 673                                          (b_appdata ? CSIDL_APPDATA :
 674                                            CSIDL_PROFILE) | CSIDL_FLAG_CREATE,
 675                                          NULL, SHGFP_TYPE_CURRENT,
 676                                          whomedir ) )
 677             {
 678                 FreeLibrary( shfolder_dll );
 679                 return FromWide( whomedir );
 680             }
 681         }
 682         FreeLibrary( shfolder_dll );
 683     }
 684
 685 #elif defined(UNDER_CE)
 686
 687 #ifndef CSIDL_APPDATA
 688 #   define CSIDL_APPDATA 0x1A
 689 #endif
 690
 691     wchar_t whomedir[MAX_PATH];
 692
 693     /* get the "Application Data" folder for the current user */
 694     if( SHGetSpecialFolderPath( NULL, whomedir, CSIDL_APPDATA, 1 ) )
 695         return FromWide( whomedir );
 696 #endif
 697
 698     psz_localhome = getenv( "HOME" );
 699     if( psz_localhome == NULL )
 700     {
 701 #if defined(HAVE_GETPWUID)
 702         struct passwd *p_pw;
 703         (void)b_appdata;
 704
 705         if( ( p_pw = getpwuid( getuid() ) ) != NULL )
 706             psz_localhome = p_pw->pw_dir;
 707         else
 708 #endif
 709         {
 710             psz_localhome = getenv( "TMP" );
 711             if( psz_localhome == NULL )
 712                 psz_localhome = "/tmp";
 713         }
 714     }
 715
 716     return FromLocaleDup( psz_localhome );
 717 }
 718
 719 /**
 720  * Get the user's home directory
 721  */
 722 char *config_GetHomeDir( void )
 723 {
 724     return GetDir( VLC_FALSE );
 725 }
 726
 727 /**
 728  * Get the user's main data and config directory:
 729  *   - on windows that's the App Data directory;
 730  *   - on other OSes it's the same as the home directory.
 731  */
 732 char *config_GetUserDir( void )
 733 {
 734     return GetDir( VLC_TRUE );
 735 }
 736
 737 /**
 738  * Get the user's VLC configuration directory
 739  */
 740 char *config_GetConfigDir( libvlc_int_t *p_libvlc )
 741 {
 742     char *psz_dir;
 743 #if defined(WIN32) || defined(__APPLE__) || defined(SYS_BEOS)
 744     char *psz_parent = config_GetUserDir();
 745     if( !psz_parent ) psz_parent = p_libvlc->psz_homedir;
 746     if( asprintf( &psz_dir, "%s" DIR_SEP CONFIG_DIR, psz_parent ) == -1 )
 747         return NULL;
 748     return psz_dir;
 749 #else
 750     /* XDG Base Directory Specification - Version 0.6 */
 751     char *psz_env = getenv( "XDG_CONFIG_HOME" );
 752     if( psz_env )
 753     {
 754         if( asprintf( &psz_dir, "%s/vlc", psz_env ) == -1 )
 755             return NULL;
 756         return psz_dir;
 757     }
 758     psz_env = getenv( "HOME" );
 759     if( !psz_env ) psz_env = p_libvlc->psz_homedir; /* not part of XDG spec but we want a sensible fallback */
 760     if( asprintf( &psz_dir, "%s/.config/vlc", psz_env ) == -1 )
 761         return NULL;
 762     return psz_dir;
 763 #endif
 764 }
 765
 766 /**
 767  * Get the user's VLC data directory
 768  * (used for stuff like the skins, custom lua modules, ...)
 769  */
 770 char *config_GetUserDataDir( libvlc_int_t *p_libvlc )
 771 {
 772     char *psz_dir;
 773 #if defined(WIN32) || defined(__APPLE__) || defined(SYS_BEOS)
 774     char *psz_parent = config_GetUserDir();
 775     if( !psz_parent ) psz_parent = p_libvlc->psz_homedir;
 776     if( asprintf( &psz_dir, "%s" DIR_SEP CONFIG_DIR, psz_parent ) == -1 )
 777         return NULL;
 778     return psz_dir;
 779 #else
 780     /* XDG Base Directory Specification - Version 0.6 */
 781     char *psz_env = getenv( "XDG_DATA_HOME" );
 782     if( psz_env )
 783     {
 784         if( asprintf( &psz_dir, "%s/vlc", psz_env ) == -1 )
 785             return NULL;
 786         return psz_dir;
 787     }
 788     psz_env = getenv( "HOME" );
 789     if( !psz_env ) psz_env = p_libvlc->psz_homedir; /* not part of XDG spec but we want a sensible fallback */
 790     if( asprintf( &psz_dir, "%s/.local/share/vlc", psz_env ) == -1 )
 791         return NULL;
 792     return psz_dir;
 793 #endif
 794 }
 795
 796 /**
 797  * Get the user's VLC cache directory
 798  * (used for stuff like the modules cache, the album art cache, ...)
 799  */
 800 char *config_GetCacheDir( libvlc_int_t *p_libvlc )
 801 {
 802     char *psz_dir;
 803 #if defined(WIN32) || defined(__APPLE__) || defined(SYS_BEOS)
 804     char *psz_parent = config_GetUserDir();
 805     if( !psz_parent ) psz_parent = p_libvlc->psz_homedir;
 806     if( asprintf( &psz_dir, "%s" DIR_SEP CONFIG_DIR, psz_parent ) == -1 )
 807         return NULL;
 808     return psz_dir;
 809 #else
 810     /* XDG Base Directory Specification - Version 0.6 */
 811     char *psz_env = getenv( "XDG_CACHE_HOME" );
 812     if( psz_env )
 813     {
 814         if( asprintf( &psz_dir, "%s/vlc", psz_env ) == -1 )
 815             return NULL;
 816         return psz_dir;
 817     }
 818     psz_env = getenv( "HOME" );
 819     if( !psz_env ) psz_env = p_libvlc->psz_homedir; /* not part of XDG spec but we want a sensible fallback */
 820     if( asprintf( &psz_dir, "%s/.cache/vlc", psz_env ) == -1 )
 821         return NULL;
 822     return psz_dir;
 823 #endif
 824 }
 825
 826 /* Adds an extra interface to the configuration */
 827 void __config_AddIntf( vlc_object_t *p_this, const char *psz_intf )
 828 {
 829     assert( psz_intf );
 830
 831     char *psz_config, *psz_parser;
 832     size_t i_len = strlen( psz_intf );
 833
 834     psz_config = psz_parser = config_GetPsz( p_this->p_libvlc, "control" );
 835     while( psz_parser )
 836     {
 837         if( !strncmp( psz_intf, psz_parser, i_len ) )
 838         {
 839             free( psz_config );
 840             return;
 841         }
 842         psz_parser = strchr( psz_parser, ':' );
 843         if( psz_parser ) psz_parser++; /* skip the ':' */
 844     }
 845     free( psz_config );
 846
 847     psz_config = psz_parser = config_GetPsz( p_this->p_libvlc, "extraintf" );
 848     while( psz_parser )
 849     {
 850         if( !strncmp( psz_intf, psz_parser, i_len ) )
 851         {
 852             free( psz_config );
 853             return;
 854         }
 855         psz_parser = strchr( psz_parser, ':' );
 856         if( psz_parser ) psz_parser++; /* skip the ':' */
 857     }
 858
 859     /* interface not found in the config, let's add it */
 860     if( psz_config && strlen( psz_config ) > 0 )
 861     {
 862         char *psz_newconfig;
 863         if( asprintf( &psz_newconfig, "%s:%s", psz_config, psz_intf ) != -1 )
 864         {
 865             config_PutPsz( p_this->p_libvlc, "extraintf", psz_newconfig );
 866             free( psz_newconfig );
 867         }
 868     }
 869     else
 870         config_PutPsz( p_this->p_libvlc, "extraintf", psz_intf );
 871
 872     free( psz_config );
 873 }
 874
 875 /* Removes an extra interface from the configuration */
 876 void __config_RemoveIntf( vlc_object_t *p_this, const char *psz_intf )
 877 {
 878     assert( psz_intf );
 879
 880     char *psz_config, *psz_parser;
 881     size_t i_len = strlen( psz_intf );
 882
 883     psz_config = psz_parser = config_GetPsz( p_this->p_libvlc, "extraintf" );
 884     while( psz_parser )
 885     {
 886         if( !strncmp( psz_intf, psz_parser, i_len ) )
 887         {
 888             char *psz_newconfig;
 889             char *psz_end = psz_parser + i_len;
 890             if( *psz_end == ':' ) psz_end++;
 891             *psz_parser = '\0';
 892             if( asprintf( &psz_newconfig, "%s%s", psz_config, psz_end ) != -1 )
 893             {
 894                 config_PutPsz( p_this->p_libvlc, "extraintf", psz_newconfig );
 895                 free( psz_newconfig );
 896             }
 897             break;
 898         }
 899         psz_parser = strchr( psz_parser, ':' );
 900         if( psz_parser ) psz_parser++; /* skip the ':' */
 901     }
 902     free( psz_config );
 903
 904     psz_config = psz_parser = config_GetPsz( p_this->p_libvlc, "control" );
 905     while( psz_parser )
 906     {
 907         if( !strncmp( psz_intf, psz_parser, i_len ) )
 908         {
 909             char *psz_newconfig;
 910             char *psz_end = psz_parser + i_len;
 911             if( *psz_end == ':' ) psz_end++;
 912             *psz_parser = '\0';
 913             if( asprintf( &psz_newconfig, "%s%s", psz_config, psz_end ) != -1 )
 914             {
 915                 config_PutPsz( p_this->p_libvlc, "control", psz_newconfig );
 916                 free( psz_newconfig );
 917             }
 918             break;
 919         }
 920         psz_parser = strchr( psz_parser, ':' );
 921         if( psz_parser ) psz_parser++; /* skip the ':' */
 922     }
 923     free( psz_config );
 924 }
 925
 926 /*
 927  * Returns VLC_TRUE if the specified extra interface is present in the
 928  * configuration, VLC_FALSE if not
 929  */
 930 vlc_bool_t __config_ExistIntf( vlc_object_t *p_this, const char *psz_intf )
 931 {
 932     assert( psz_intf );
 933
 934     char *psz_config, *psz_parser;
 935     size_t i_len = strlen( psz_intf );
 936
 937     psz_config = psz_parser = config_GetPsz( p_this->p_libvlc, "extraintf" );
 938     while( psz_parser )
 939     {
 940         if( !strncmp( psz_parser, psz_intf, i_len ) )
 941         {
 942             free( psz_config );
 943             return VLC_TRUE;
 944         }
 945         psz_parser = strchr( psz_parser, ':' );
 946         if( psz_parser ) psz_parser++; /* skip the ':' */
 947     }
 948     free( psz_config );
 949
 950     psz_config = psz_parser = config_GetPsz( p_this->p_libvlc, "control" );
 951     while( psz_parser )
 952     {
 953         if( !strncmp( psz_parser, psz_intf, i_len ) )
 954         {
 955             free( psz_config );
 956             return VLC_TRUE;
 957         }
 958         psz_parser = strchr( psz_parser, ':' );
 959         if( psz_parser ) psz_parser++; /* skip the ':' */
 960     }
 961     free( psz_config );
 962
 963     return VLC_FALSE;
 964 }
 965