1 /*****************************************************************************
2 * file.c: configuration file handling
3 *****************************************************************************
4 * Copyright (C) 2001-2007 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.org>
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.
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.
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 *****************************************************************************/
28 #include <vlc_common.h>
29 #include "../libvlc.h"
30 #include "vlc_charset.h"
33 #include <errno.h> /* errno */
42 #include "configuration.h"
43 #include "modules/modules.h"
45 static char *ConfigKeyToString( int );
47 static inline char *strdupnull (const char *src)
49 return src ? strdup (src) : NULL;
53 * Get the user's configuration file
55 static char *config_GetConfigFile( void )
57 char *psz_dir = config_GetUserConfDir();
60 if( asprintf( &psz_configfile, "%s" DIR_SEP CONFIG_FILE, psz_dir ) == -1 )
61 psz_configfile = NULL;
63 return psz_configfile;
66 static FILE *config_OpenConfigFile( vlc_object_t *p_obj, const char *mode )
68 char *psz_filename = config_GetPsz( p_obj, "config" );
70 psz_filename = config_GetConfigFile();
72 msg_Dbg( p_obj, "opening config file (%s)", psz_filename );
74 FILE *p_stream = utf8_fopen( psz_filename, mode );
75 if( p_stream == NULL && errno != ENOENT )
77 msg_Err( p_obj, "cannot open config file (%s): %m",
81 #if !( defined(WIN32) || defined(__APPLE__) || defined(SYS_BEOS) )
82 else if( p_stream == NULL && errno == ENOENT && mode[0] == 'r' )
84 /* This is the fallback for pre XDG Base Directory
85 * Specification configs */
87 if( asprintf( &psz_old, "%s" DIR_SEP CONFIG_DIR DIR_SEP CONFIG_FILE,
88 config_GetHomeDir() ) != -1 )
90 p_stream = utf8_fopen( psz_old, mode );
93 /* Old config file found. We want to write it at the
94 * new location now. */
95 msg_Info( p_obj->p_libvlc, "Found old config file at %s. "
96 "VLC will now use %s.", psz_old, psz_filename );
98 if( asprintf(&psz_readme,"%s"DIR_SEP CONFIG_DIR DIR_SEP"README",
99 config_GetHomeDir() ) != -1 )
101 FILE *p_readme = utf8_fopen( psz_readme, "wt" );
104 fprintf( p_readme, "The VLC media player "
105 "configuration folder has moved to comply\n"
106 "with the XDG Base Directory Specification "
107 "version 0.6. Your\nconfiguration has been "
108 "copied to the new location:\n%s\nYou can "
109 "delete this directory and all its contents.",
124 static int strtoi (const char *str)
130 l = strtol (str, &end, 0);
134 if ((l > INT_MAX) || (l < INT_MIN))
143 /*****************************************************************************
144 * config_LoadConfigFile: loads the configuration file.
145 *****************************************************************************
146 * This function is called to load the config options stored in the config
148 *****************************************************************************/
149 int __config_LoadConfigFile( vlc_object_t *p_this, const char *psz_module_name )
151 libvlc_priv_t *priv = libvlc_priv (p_this->p_libvlc);
154 file = config_OpenConfigFile (p_this, "rt");
158 /* Acquire config file lock */
159 vlc_mutex_lock( &priv->config_lock );
161 /* Look for the selected module, if NULL then save everything */
162 module_t **list = module_list_get (NULL);
164 /* Look for UTF-8 Byte Order Mark */
165 char * (*convert) (const char *) = strdupnull;
168 if ((fread (bom, 1, 3, file) != 3)
169 || memcmp (bom, "\xEF\xBB\xBF", 3))
171 convert = FromLocaleDup;
172 rewind (file); /* no BOM, rewind */
175 module_t *module = NULL;
176 char line[1024], section[1022];
179 /* Ensure consistent number formatting... */
180 locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
181 locale_t baseloc = uselocale (loc);
183 while (fgets (line, 1024, file) != NULL)
185 /* Ignore comments and empty lines */
196 char *ptr = strchr (line, ']');
198 continue; /* syntax error; */
201 /* New section ( = a given module) */
202 strcpy (section, line + 1);
205 if ((psz_module_name == NULL)
206 || (strcmp (psz_module_name, section) == 0))
208 for (int i = 0; list[i]; i++)
210 module_t *m = list[i];
212 if ((strcmp (section, m->psz_object_name) == 0)
213 && (m->i_config_items > 0)) /* ignore config-less modules */
216 if (psz_module_name != NULL)
218 "loading config for module \"%s\"",
229 continue; /* no need to parse if there is no matching module */
231 char *ptr = strchr (line, '\n');
235 /* look for option name */
236 const char *psz_option_name = line;
238 ptr = strchr (line, '=');
240 continue; /* syntax error */
243 const char *psz_option_value = ptr + 1;
245 /* try to match this option with one of the module's options */
246 for (size_t i = 0; i < module->confsize; i++)
248 module_config_t *p_item = module->p_config + i;
250 if ((p_item->i_type & CONFIG_HINT)
251 || strcmp (p_item->psz_name, psz_option_name))
257 switch( p_item->i_type )
259 case CONFIG_ITEM_BOOL:
260 case CONFIG_ITEM_INTEGER:
262 long l = strtoi (psz_option_value);
264 msg_Warn (p_this, "Integer value (%s) for %s: %m",
265 psz_option_value, psz_option_name);
267 p_item->saved.i = p_item->value.i = (int)l;
271 case CONFIG_ITEM_FLOAT:
272 if( !*psz_option_value )
273 break; /* ignore empty option */
274 p_item->value.f = (float)atof (psz_option_value);
275 p_item->saved.f = p_item->value.f;
278 case CONFIG_ITEM_KEY:
279 if( !*psz_option_value )
280 break; /* ignore empty option */
281 p_item->value.i = ConfigStringToKey(psz_option_value);
282 p_item->saved.i = p_item->value.i;
286 vlc_mutex_lock( p_item->p_lock );
288 /* free old string */
289 free( (char*) p_item->value.psz );
290 free( (char*) p_item->saved.psz );
292 p_item->value.psz = convert (psz_option_value);
293 p_item->saved.psz = strdupnull (p_item->value.psz);
295 vlc_mutex_unlock( p_item->p_lock );
305 msg_Err (p_this, "error reading configuration: %m");
310 module_list_free (list);
311 if (loc != (locale_t)0)
317 vlc_mutex_unlock( &priv->config_lock );
321 /*****************************************************************************
322 * config_CreateDir: Create configuration directory if it doesn't exist.
323 *****************************************************************************/
324 int config_CreateDir( vlc_object_t *p_this, const char *psz_dirname )
326 if( !psz_dirname || !*psz_dirname ) return -1;
328 if( utf8_mkdir( psz_dirname, 0700 ) == 0 )
338 /* Let's try to create the parent directory */
339 char psz_parent[strlen( psz_dirname ) + 1], *psz_end;
340 strcpy( psz_parent, psz_dirname );
342 psz_end = strrchr( psz_parent, DIR_SEP_CHAR );
343 if( psz_end && psz_end != psz_parent )
346 if( config_CreateDir( p_this, psz_parent ) == 0 )
348 if( !utf8_mkdir( psz_dirname, 0700 ) )
355 msg_Err( p_this, "could not create %s: %m", psz_dirname );
360 config_Write (FILE *file, const char *type, const char *desc,
361 bool comment, const char *name, const char *fmt, ...)
369 if (fprintf (file, "# %s (%s)\n%s%s=", desc, vlc_gettext (type),
370 comment ? "#" : "", name) < 0)
374 ret = vfprintf (file, fmt, ap);
379 if (fputs ("\n\n", file) == EOF)
385 static int config_PrepareDir (vlc_object_t *obj)
387 char *psz_configdir = config_GetUserConfDir ();
388 if (psz_configdir == NULL) /* XXX: This should never happen */
391 int ret = config_CreateDir (obj, psz_configdir);
392 free (psz_configdir);
396 /*****************************************************************************
397 * config_SaveConfigFile: Save a module's config options.
398 *****************************************************************************
399 * This will save the specified module's config options to the config file.
400 * If psz_module_name is NULL then we save all the modules config options.
401 * It's no use to save the config options that kept their default values, so
402 * we'll try to be a bit clever here.
404 * When we save we mustn't delete the config options of the modules that
405 * haven't been loaded. So we cannot just create a new config file with the
406 * config structures we've got in memory.
407 * I don't really know how to deal with this nicely, so I will use a completly
409 * I will load the config file in memory, but skipping all the sections of the
410 * modules we want to save. Then I will create a brand new file, dump the file
411 * loaded in memory and then append the sections of the modules we want to
414 *****************************************************************************/
415 static int SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name,
418 libvlc_priv_t *priv = libvlc_priv (p_this->p_libvlc);
421 char p_line[1024], *p_index2;
423 char *p_bigbuffer, *p_index;
427 /* Acquire config file lock */
428 vlc_mutex_lock( &priv->config_lock );
430 if( config_PrepareDir( p_this ) )
432 msg_Err( p_this, "no configuration directory" );
433 vlc_mutex_unlock( &priv->config_lock );
437 file = config_OpenConfigFile( p_this, "rt" );
440 /* look for file size */
441 fseek( file, 0L, SEEK_END );
442 i_sizebuf = ftell( file );
443 fseek( file, 0L, SEEK_SET );
446 p_bigbuffer = p_index = malloc( i_sizebuf+1 );
449 if( file ) fclose( file );
450 vlc_mutex_unlock( &priv->config_lock );
455 /* List all available modules */
456 module_t **list = module_list_get (NULL);
458 /* backup file into memory, we only need to backup the sections we won't
461 while( file && fgets( p_line, 1024, file ) )
463 if( (p_line[0] == '[') && (p_index2 = strchr(p_line,']')))
466 /* we found a section, check if we need to do a backup */
467 for( i_index = 0; (p_parser = list[i_index]) != NULL; i_index++ )
469 if( ((p_index2 - &p_line[1])
470 == (int)strlen(p_parser->psz_object_name) )
471 && !memcmp( &p_line[1], p_parser->psz_object_name,
472 strlen(p_parser->psz_object_name) ) )
474 if( !psz_module_name )
476 else if( !strcmp( psz_module_name,
477 p_parser->psz_object_name ) )
482 if( list[i_index] == NULL )
484 /* we don't have this section in our list so we need to back
488 msg_Dbg( p_this, "backing up config for unknown module \"%s\"",
501 /* save line if requested and line is valid (doesn't begin with a
502 * space, tab, or eol) */
503 if( b_backup && (p_line[0] != '\n') && (p_line[0] != ' ')
504 && (p_line[0] != '\t') )
506 strcpy( p_index, p_line );
507 p_index += strlen( p_line );
510 if( file ) fclose( file );
514 * Save module config in file
517 file = config_OpenConfigFile (p_this, "wt");
520 module_list_free (list);
522 vlc_mutex_unlock( &priv->config_lock );
526 fprintf( file, "\xEF\xBB\xBF###\n### " COPYRIGHT_MESSAGE "\n###\n\n"
527 "###\n### lines beginning with a '#' character are comments\n###\n\n" );
529 /* Ensure consistent number formatting... */
530 locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
531 locale_t baseloc = uselocale (loc);
533 /* Look for the selected module, if NULL then save everything */
534 for( i_index = 0; (p_parser = list[i_index]) != NULL; i_index++ )
536 module_config_t *p_item, *p_end;
538 if( psz_module_name && strcmp( psz_module_name,
539 p_parser->psz_object_name ) )
542 if( !p_parser->i_config_items )
545 if( psz_module_name )
546 msg_Dbg( p_this, "saving config for module \"%s\"",
547 p_parser->psz_object_name );
549 fprintf( file, "[%s]", p_parser->psz_object_name );
550 if( p_parser->psz_longname )
551 fprintf( file, " # %s\n\n", p_parser->psz_longname );
553 fprintf( file, "\n\n" );
555 for( p_item = p_parser->p_config, p_end = p_item + p_parser->confsize;
559 /* Do not save the new value in the configuration file
560 * if doing an autosave, and the item is not an "autosaved" one. */
561 bool b_retain = b_autosave && !p_item->b_autosave;
563 if ((p_item->i_type & CONFIG_HINT) /* ignore hint */
564 || p_item->b_removed /* ignore deprecated option */
565 || p_item->b_unsaveable) /* ignore volatile option */
568 if (IsConfigIntegerType (p_item->i_type))
570 int val = b_retain ? p_item->saved.i : p_item->value.i;
571 if (p_item->i_type == CONFIG_ITEM_KEY)
573 char *psz_key = ConfigKeyToString (val);
574 config_Write (file, p_item->psz_text, N_("key"),
575 val == p_item->orig.i,
576 p_item->psz_name, "%s",
577 psz_key ? psz_key : "");
581 config_Write (file, p_item->psz_text,
582 (p_item->i_type == CONFIG_ITEM_BOOL)
583 ? N_("boolean") : N_("integer"),
584 val == p_item->orig.i,
585 p_item->psz_name, "%d", val);
586 p_item->saved.i = val;
589 if (IsConfigFloatType (p_item->i_type))
591 float val = b_retain ? p_item->saved.f : p_item->value.f;
592 config_Write (file, p_item->psz_text, N_("float"),
593 val == p_item->orig.f,
594 p_item->psz_name, "%f", val);
595 p_item->saved.f = val;
599 const char *psz_value = b_retain ? p_item->saved.psz
603 assert (IsConfigStringType (p_item->i_type));
605 if (b_retain && (psz_value == NULL)) /* FIXME: hack */
606 psz_value = p_item->orig.psz;
610 ? ((p_item->orig.psz != NULL)
611 ? (strcmp (psz_value, p_item->orig.psz) != 0)
613 : (p_item->orig.psz != NULL);
615 config_Write (file, p_item->psz_text, N_("string"),
616 !modified, p_item->psz_name, "%s",
617 psz_value ? psz_value : "");
622 free ((char *)p_item->saved.psz);
623 if( (psz_value && p_item->orig.psz &&
624 strcmp( psz_value, p_item->orig.psz )) ||
625 !psz_value || !p_item->orig.psz)
626 p_item->saved.psz = strdupnull (psz_value);
628 p_item->saved.psz = NULL;
633 p_item->b_dirty = false;
637 module_list_free (list);
638 if (loc != (locale_t)0)
645 * Restore old settings from the config in file
647 fputs( p_bigbuffer, file );
651 vlc_mutex_unlock( &priv->config_lock );
656 int config_AutoSaveConfigFile( vlc_object_t *p_this )
658 libvlc_priv_t *priv = libvlc_priv (p_this->p_libvlc);
664 /* Check if there's anything to save */
665 vlc_mutex_lock( &priv->config_lock );
666 module_t **list = module_list_get (NULL);
667 for( i_index = 0; list[i_index]; i_index++ )
669 module_t *p_parser = list[i_index];
670 module_config_t *p_item, *p_end;
672 if( !p_parser->i_config_items ) continue;
674 for( p_item = p_parser->p_config, p_end = p_item + p_parser->confsize;
678 if( p_item->b_autosave && p_item->b_dirty ) break;
680 if( p_item < p_end ) break;
682 done = list[i_index] == NULL;
683 module_list_free (list);
684 vlc_mutex_unlock( &priv->config_lock );
686 return done ? VLC_SUCCESS : SaveConfigFile( p_this, NULL, true );
689 int __config_SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name )
691 return SaveConfigFile( p_this, psz_module_name, false );
694 int ConfigStringToKey( const char *psz_key )
698 const char *psz_parser = strchr( psz_key, '-' );
699 while( psz_parser && psz_parser != psz_key )
701 for( i = 0; i < sizeof(vlc_modifiers) / sizeof(key_descriptor_t); i++ )
703 if( !strncasecmp( vlc_modifiers[i].psz_key_string, psz_key,
704 strlen( vlc_modifiers[i].psz_key_string ) ) )
706 i_key |= vlc_modifiers[i].i_key_code;
709 psz_key = psz_parser + 1;
710 psz_parser = strchr( psz_key, '-' );
712 for( i = 0; i < sizeof(vlc_keys) / sizeof( key_descriptor_t ); i++ )
714 if( !strcasecmp( vlc_keys[i].psz_key_string, psz_key ) )
716 i_key |= vlc_keys[i].i_key_code;
723 char *ConfigKeyToString( int i_key )
725 char *psz_key = malloc( 100 );
736 for( index = 0; index < (sizeof(vlc_modifiers) / sizeof(key_descriptor_t));
739 if( i_key & vlc_modifiers[index].i_key_code )
741 p += sprintf( p, "%s-", vlc_modifiers[index].psz_key_string );
744 for( index = 0; index < (sizeof(vlc_keys) / sizeof( key_descriptor_t));
747 if( (int)( i_key & ~KEY_MODIFIER ) == vlc_keys[index].i_key_code )
749 p += sprintf( p, "%s", vlc_keys[index].psz_key_string );