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configuration.c
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2003-04-07
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/*****************************************************************************
* configuration.c management of the modules configuration
*****************************************************************************
* Copyright (C) 2001 VideoLAN
* $Id: configuration.c,v 1.54 2003/04/07 11:48:51 gbazin Exp $
*
* Authors: Gildas Bazin <gbazin@netcourrier.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
#include <vlc/vlc.h>
#include <stdio.h> /* sprintf() */
#include <stdlib.h> /* free(), strtol() */
#include <string.h> /* strdup() */
#ifdef HAVE_ERRNO_H
# include <errno.h> /* errno */
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h> /* getuid() */
#endif
#ifdef HAVE_GETOPT_LONG
# ifdef HAVE_GETOPT_H
# include <getopt.h> /* getopt() */
# endif
#else
# include "../extras/getopt.h"
#endif
#if defined(HAVE_GETPWUID)
# include <pwd.h> /* getpwuid() */
#endif
#if defined( HAVE_SYS_STAT_H )
# include <sys/stat.h>
#endif
#if defined( HAVE_SYS_TYPES_H )
# include <sys/types.h>
#endif
#if defined( WIN32 ) && !defined( UNDER_CE )
# include <direct.h>
#endif
/*****************************************************************************
* config_GetInt: get the value of an int variable
*****************************************************************************
* This function is used to get the value of variables which are internally
* represented by an integer (CONFIG_ITEM_INTEGER and
* CONFIG_ITEM_BOOL).
*****************************************************************************/
int __config_GetInt( vlc_object_t *p_this, const char *psz_name )
{
module_config_t *p_config;
p_config = config_FindConfig( p_this, psz_name );
/* sanity checks */
if( !p_config )
{
msg_Err( p_this, "option %s does not exist", psz_name );
return -1;
}
if( (p_config->i_type!=CONFIG_ITEM_INTEGER) &&
(p_config->i_type!=CONFIG_ITEM_BOOL) )
{
msg_Err( p_this, "option %s does not refer to an int", psz_name );
return -1;
}
return p_config->i_value;
}
/*****************************************************************************
* config_GetFloat: get the value of a float variable
*****************************************************************************
* This function is used to get the value of variables which are internally
* represented by a float (CONFIG_ITEM_FLOAT).
*****************************************************************************/
float __config_GetFloat( vlc_object_t *p_this, const char *psz_name )
{
module_config_t *p_config;
p_config = config_FindConfig( p_this, psz_name );
/* sanity checks */
if( !p_config )
{
msg_Err( p_this, "option %s does not exist", psz_name );
return -1;
}
if( p_config->i_type != CONFIG_ITEM_FLOAT )
{
msg_Err( p_this, "option %s does not refer to a float", psz_name );
return -1;
}
return p_config->f_value;
}
/*****************************************************************************
* config_GetPsz: get the string value of a string variable
*****************************************************************************
* This function is used to get the value of variables which are internally
* represented by a string (CONFIG_ITEM_STRING, CONFIG_ITEM_FILE,
* CONFIG_ITEM_DIRECTORY, and CONFIG_ITEM_MODULE).
*
* Important note: remember to free() the returned char* because it's a
* duplicate of the actual value. It isn't safe to return a pointer to the
* actual value as it can be modified at any time.
*****************************************************************************/
char * __config_GetPsz( vlc_object_t *p_this, const char *psz_name )
{
module_config_t *p_config;
char *psz_value = NULL;
p_config = config_FindConfig( p_this, psz_name );
/* sanity checks */
if( !p_config )
{
msg_Err( p_this, "option %s does not exist", psz_name );
return NULL;
}
if( (p_config->i_type!=CONFIG_ITEM_STRING) &&
(p_config->i_type!=CONFIG_ITEM_FILE) &&
(p_config->i_type!=CONFIG_ITEM_DIRECTORY) &&
(p_config->i_type!=CONFIG_ITEM_MODULE) )
{
msg_Err( p_this, "option %s does not refer to a string", psz_name );
return NULL;
}
/* return a copy of the string */
vlc_mutex_lock( p_config->p_lock );
if( p_config->psz_value ) psz_value = strdup( p_config->psz_value );
vlc_mutex_unlock( p_config->p_lock );
return psz_value;
}
/*****************************************************************************
* config_PutPsz: set the string value of a string variable
*****************************************************************************
* This function is used to set the value of variables which are internally
* represented by a string (CONFIG_ITEM_STRING, CONFIG_ITEM_FILE,
* CONFIG_ITEM_DIRECTORY, and CONFIG_ITEM_MODULE).
*****************************************************************************/
void __config_PutPsz( vlc_object_t *p_this,
const char *psz_name, const char *psz_value )
{
module_config_t *p_config;
p_config = config_FindConfig( p_this, psz_name );
/* sanity checks */
if( !p_config )
{
msg_Warn( p_this, "option %s does not exist", psz_name );
return;
}
if( (p_config->i_type!=CONFIG_ITEM_STRING) &&
(p_config->i_type!=CONFIG_ITEM_FILE) &&
(p_config->i_type!=CONFIG_ITEM_DIRECTORY) &&
(p_config->i_type!=CONFIG_ITEM_MODULE) )
{
msg_Err( p_this, "option %s does not refer to a string", psz_name );
return;
}
vlc_mutex_lock( p_config->p_lock );
/* free old string */
if( p_config->psz_value ) free( p_config->psz_value );
if( psz_value ) p_config->psz_value = strdup( psz_value );
else p_config->psz_value = NULL;
vlc_mutex_unlock( p_config->p_lock );
if( p_config->pf_callback )
{
p_config->pf_callback( p_this );
}
}
/*****************************************************************************
* config_PutInt: set the integer value of an int variable
*****************************************************************************
* This function is used to set the value of variables which are internally
* represented by an integer (CONFIG_ITEM_INTEGER and
* CONFIG_ITEM_BOOL).
*****************************************************************************/
void __config_PutInt( vlc_object_t *p_this, const char *psz_name, int i_value )
{
module_config_t *p_config;
p_config = config_FindConfig( p_this, psz_name );
/* sanity checks */
if( !p_config )
{
msg_Warn( p_this, "option %s does not exist", psz_name );
return;
}
if( (p_config->i_type!=CONFIG_ITEM_INTEGER) &&
(p_config->i_type!=CONFIG_ITEM_BOOL) )
{
msg_Err( p_this, "option %s does not refer to an int", psz_name );
return;
}
/* if i_min == i_max == 0, then do not use them */
if ((p_config->i_min == 0) && (p_config->i_max == 0))
{
p_config->i_value = i_value;
}
else if (i_value < p_config->i_min)
{
p_config->i_value = p_config->i_min;
}
else if (i_value > p_config->i_max)
{
p_config->i_value = p_config->i_max;
}
else
{
p_config->i_value = i_value;
}
if( p_config->pf_callback )
{
p_config->pf_callback( p_this );
}
}
/*****************************************************************************
* config_PutFloat: set the value of a float variable
*****************************************************************************
* This function is used to set the value of variables which are internally
* represented by a float (CONFIG_ITEM_FLOAT).
*****************************************************************************/
void __config_PutFloat( vlc_object_t *p_this,
const char *psz_name, float f_value )
{
module_config_t *p_config;
p_config = config_FindConfig( p_this, psz_name );
/* sanity checks */
if( !p_config )
{
msg_Warn( p_this, "option %s does not exist", psz_name );
return;
}
if( p_config->i_type != CONFIG_ITEM_FLOAT )
{
msg_Err( p_this, "option %s does not refer to a float", psz_name );
return;
}
/* if f_min == f_max == 0, then do not use them */
if ((p_config->f_min == 0) && (p_config->f_max == 0))
{
p_config->f_value = f_value;
}
else if (f_value < p_config->f_min)
{
p_config->f_value = p_config->f_min;
}
else if (f_value > p_config->f_max)
{
p_config->f_value = p_config->f_max;
}
else
{
p_config->f_value = f_value;
}
if( p_config->pf_callback )
{
p_config->pf_callback( p_this );
}
}
/*****************************************************************************
* config_FindConfig: find the config structure associated with an option.
*****************************************************************************
* FIXME: This function really needs to be optimized.
* FIXME: And now even more.
*****************************************************************************/
module_config_t *config_FindConfig( vlc_object_t *p_this, const char *psz_name )
{
vlc_list_t *p_list;
module_t *p_parser;
module_config_t *p_item;
int i_index;
if( !psz_name ) return NULL;
p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
for( i_index = 0; i_index < p_list->i_count; i_index++ )
{
p_parser = (module_t *)p_list->p_values[i_index].p_object ;
if( !p_parser->i_config_items )
continue;
for( p_item = p_parser->p_config;
p_item->i_type != CONFIG_HINT_END;
p_item++ )
{
if( p_item->i_type & CONFIG_HINT )
/* ignore hints */
continue;
if( !strcmp( psz_name, p_item->psz_name ) )
{
vlc_list_release( p_list );
return p_item;
}
}
}
vlc_list_release( p_list );
return NULL;
}
/*****************************************************************************
* config_Duplicate: creates a duplicate of a module's configuration data.
*****************************************************************************
* Unfortunatly we cannot work directly with the module's config data as
* this module might be unloaded from memory at any time (remember HideModule).
* This is why we need to create an exact copy of the config data.
*****************************************************************************/
void config_Duplicate( module_t *p_module, module_config_t *p_orig )
{
int i, j, i_lines = 1;
module_config_t *p_item;
/* Calculate the structure length */
p_module->i_config_items = 0;
p_module->i_bool_items = 0;
for( p_item = p_orig; p_item->i_type != CONFIG_HINT_END; p_item++ )
{
i_lines++;
if( p_item->i_type & CONFIG_ITEM )
{
p_module->i_config_items++;
}
if( p_item->i_type == CONFIG_ITEM_BOOL )
{
p_module->i_bool_items++;
}
}
/* Allocate memory */
p_module->p_config = (module_config_t *)malloc( sizeof(module_config_t)
* i_lines );
if( p_module->p_config == NULL )
{
msg_Err( p_module, "config error: can't duplicate p_config" );
return;
}
/* Do the duplication job */
for( i = 0; i < i_lines ; i++ )
{
p_module->p_config[i].i_type = p_orig[i].i_type;
p_module->p_config[i].i_short = p_orig[i].i_short;
p_module->p_config[i].i_value = p_orig[i].i_value;
p_module->p_config[i].i_min = p_orig[i].i_min;
p_module->p_config[i].i_max = p_orig[i].i_max;
p_module->p_config[i].f_value = p_orig[i].f_value;
p_module->p_config[i].f_min = p_orig[i].f_min;
p_module->p_config[i].f_max = p_orig[i].f_max;
p_module->p_config[i].b_dirty = p_orig[i].b_dirty;
p_module->p_config[i].b_advanced = p_orig[i].b_advanced;
p_module->p_config[i].psz_type = p_orig[i].psz_type ?
strdup( p_orig[i].psz_type ) : NULL;
p_module->p_config[i].psz_name = p_orig[i].psz_name ?
strdup( p_orig[i].psz_name ) : NULL;
p_module->p_config[i].psz_text = p_orig[i].psz_text ?
strdup( _(p_orig[i].psz_text) ) : NULL;
p_module->p_config[i].psz_longtext = p_orig[i].psz_longtext ?
strdup( _(p_orig[i].psz_longtext) ) : NULL;
p_module->p_config[i].psz_value = p_orig[i].psz_value ?
strdup( p_orig[i].psz_value ) : NULL;
p_module->p_config[i].p_lock = &p_module->object_lock;
/* duplicate the string list */
p_module->p_config[i].ppsz_list = NULL;
if( p_orig[i].ppsz_list )
{
for( j = 0; p_orig[i].ppsz_list[j]; j++ );
p_module->p_config[i].ppsz_list = malloc( (j+1) *sizeof(char *) );
if( p_module->p_config[i].ppsz_list )
{
for( j = 0; p_orig[i].ppsz_list[j]; j++ )
p_module->p_config[i].ppsz_list[j] =
strdup( p_orig[i].ppsz_list[j] );
}
p_module->p_config[i].ppsz_list[j] = NULL;
}
p_module->p_config[i].pf_callback = p_orig[i].pf_callback;
}
}
/*****************************************************************************
* config_Free: frees a duplicated module's configuration data.
*****************************************************************************
* This function frees all the data duplicated by config_Duplicate.
*****************************************************************************/
void config_Free( module_t *p_module )
{
module_config_t *p_item = p_module->p_config;
int i;
if( p_item == NULL )
{
return;
}
for( ; p_item->i_type != CONFIG_HINT_END ; p_item++ )
{
if( p_item->psz_type )
free( p_item->psz_type );
if( p_item->psz_name )
free( p_item->psz_name );
if( p_item->psz_text )
free( p_item->psz_text );
if( p_item->psz_longtext )
free( p_item->psz_longtext );
if( p_item->psz_value )
free( p_item->psz_value );
if( p_item->ppsz_list )
{
for( i = 0; p_item->ppsz_list[i]; i++ )
free(p_item->ppsz_list[i]);
free( p_item->ppsz_list );
}
}
free( p_module->p_config );
p_module->p_config = NULL;
}
/*****************************************************************************
* config_SetCallbacks: sets callback functions in the duplicate p_config.
*****************************************************************************
* Unfortunatly we cannot work directly with the module's config data as
* this module might be unloaded from memory at any time (remember HideModule).
* This is why we need to duplicate callbacks each time we reload the module.
*****************************************************************************/
void config_SetCallbacks( module_config_t *p_new, module_config_t *p_orig )
{
while( p_new->i_type != CONFIG_HINT_END )
{
p_new->pf_callback = p_orig->pf_callback;
p_new++;
p_orig++;
}
}
/*****************************************************************************
* config_UnsetCallbacks: unsets callback functions in the duplicate p_config.
*****************************************************************************
* We simply undo what we did in config_SetCallbacks.
*****************************************************************************/
void config_UnsetCallbacks( module_config_t *p_new )
{
while( p_new->i_type != CONFIG_HINT_END )
{
p_new->pf_callback = NULL;
p_new++;
}
}
/*****************************************************************************
* config_LoadConfigFile: loads the configuration file.
*****************************************************************************
* This function is called to load the config options stored in the config
* file.
*****************************************************************************/
int __config_LoadConfigFile( vlc_object_t *p_this, const char *psz_module_name )
{
vlc_list_t *p_list;
module_t *p_parser;
module_config_t *p_item;
FILE *file;
char line[1024];
char *p_index, *psz_option_name, *psz_option_value;
char *psz_filename, *psz_homedir;
int i_index;
psz_homedir = p_this->p_vlc->psz_homedir;
if( !psz_homedir )
{
msg_Err( p_this, "psz_homedir is null" );
return -1;
}
psz_filename = (char *)malloc( strlen("/" CONFIG_DIR "/" CONFIG_FILE) +
strlen(psz_homedir) + 1 );
if( !psz_filename )
{
msg_Err( p_this, "out of memory" );
return -1;
}
sprintf( psz_filename, "%s/" CONFIG_DIR "/" CONFIG_FILE, psz_homedir );
msg_Dbg( p_this, "opening config file %s", psz_filename );
/* Acquire config file lock */
vlc_mutex_lock( &p_this->p_vlc->config_lock );
file = fopen( psz_filename, "rt" );
if( !file )
{
msg_Warn( p_this, "config file %s does not exist yet", psz_filename );
free( psz_filename );
vlc_mutex_unlock( &p_this->p_vlc->config_lock );
return -1;
}
/* Look for the selected module, if NULL then save everything */
p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
for( i_index = 0; i_index < p_list->i_count; i_index++ )
{
p_parser = (module_t *)p_list->p_values[i_index].p_object ;
if( psz_module_name
&& strcmp( psz_module_name, p_parser->psz_object_name ) )
{
continue;
}
/* The config file is organized in sections, one per module. Look for
* the interesting section ( a section is of the form [foo] ) */
fseek( file, 0L, SEEK_SET );
while( fgets( line, 1024, file ) )
{
if( (line[0] == '[')
&& (p_index = strchr(line,']'))
&& (p_index - &line[1]
== (int)strlen(p_parser->psz_object_name))
&& !memcmp( &line[1], p_parser->psz_object_name,
strlen(p_parser->psz_object_name) ) )
{
#if 0
msg_Dbg( p_this, "loading config for module \"%s\"",
p_parser->psz_object_name );
#endif
break;
}
}
/* either we found the section or we're at the EOF */
/* Now try to load the options in this section */
while( fgets( line, 1024, file ) )
{
if( line[0] == '[' ) break; /* end of section */
/* ignore comments or empty lines */
if( (line[0] == '#') || (line[0] == '\n') || (line[0] == (char)0) )
continue;
/* get rid of line feed */
if( line[strlen(line)-1] == '\n' )
line[strlen(line)-1] = (char)0;
/* look for option name */
psz_option_name = line;
psz_option_value = NULL;
p_index = strchr( line, '=' );
if( !p_index ) break; /* this ain't an option!!! */
*p_index = (char)0;
psz_option_value = p_index + 1;
if( !p_parser->i_config_items )
{
continue;
}
/* try to match this option with one of the module's options */
for( p_item = p_parser->p_config;
p_item->i_type != CONFIG_HINT_END;
p_item++ )
{
if( p_item->i_type & CONFIG_HINT )
/* ignore hints */
continue;
if( !strcmp( p_item->psz_name, psz_option_name ) )
{
/* We found it */
switch( p_item->i_type )
{
case CONFIG_ITEM_BOOL:
case CONFIG_ITEM_INTEGER:
if( !*psz_option_value )
break; /* ignore empty option */
p_item->i_value = atoi( psz_option_value);
#if 0
msg_Dbg( p_this, "option \"%s\", value %i",
p_item->psz_name, p_item->i_value );
#endif
break;
case CONFIG_ITEM_FLOAT:
if( !*psz_option_value )
break; /* ignore empty option */
p_item->f_value = (float)atof( psz_option_value);
#if O
msg_Dbg( p_this, "option \"%s\", value %f",
p_item->psz_name, (double)p_item->f_value );
#endif
break;
default:
vlc_mutex_lock( p_item->p_lock );
/* free old string */
if( p_item->psz_value )
free( p_item->psz_value );
p_item->psz_value = *psz_option_value ?
strdup( psz_option_value ) : NULL;
vlc_mutex_unlock( p_item->p_lock );
#if 0
msg_Dbg( p_this, "option \"%s\", value \"%s\"",
p_item->psz_name,
p_item->psz_value ? p_item->psz_value : "" );
#endif
break;
}
}
}
}
}
vlc_list_release( p_list );
fclose( file );
free( psz_filename );
vlc_mutex_unlock( &p_this->p_vlc->config_lock );
return 0;
}
/*****************************************************************************
* config_SaveConfigFile: Save a module's config options.
*****************************************************************************
* This will save the specified module's config options to the config file.
* If psz_module_name is NULL then we save all the modules config options.
* It's no use to save the config options that kept their default values, so
* we'll try to be a bit clever here.
*
* When we save we mustn't delete the config options of the modules that
* haven't been loaded. So we cannot just create a new config file with the
* config structures we've got in memory.
* I don't really know how to deal with this nicely, so I will use a completly
* dumb method ;-)
* I will load the config file in memory, but skipping all the sections of the
* modules we want to save. Then I will create a brand new file, dump the file
* loaded in memory and then append the sections of the modules we want to
* save.
* Really stupid no ?
*****************************************************************************/
int __config_SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name )
{
module_t *p_parser;
vlc_list_t *p_list;
module_config_t *p_item;
FILE *file;
char p_line[1024], *p_index2;
int i_sizebuf = 0;
char *p_bigbuffer, *p_index;
vlc_bool_t b_backup;
char *psz_filename, *psz_homedir;
int i_index;
/* Acquire config file lock */
vlc_mutex_lock( &p_this->p_vlc->config_lock );
psz_homedir = p_this->p_vlc->psz_homedir;
if( !psz_homedir )
{
msg_Err( p_this, "psz_homedir is null" );
vlc_mutex_unlock( &p_this->p_vlc->config_lock );
return -1;
}
psz_filename = (char *)malloc( strlen("/" CONFIG_DIR "/" CONFIG_FILE) +
strlen(psz_homedir) + 1 );
if( !psz_filename )
{
msg_Err( p_this, "out of memory" );
vlc_mutex_unlock( &p_this->p_vlc->config_lock );
return -1;
}
sprintf( psz_filename, "%s/" CONFIG_DIR, psz_homedir );
#if defined( UNDER_CE )
{
wchar_t psz_new[ MAX_PATH ];
MultiByteToWideChar( CP_ACP, 0, psz_filename, -1, psz_new, MAX_PATH );
if( CreateDirectory( psz_new, NULL ) )
{
msg_Err( p_this, "could not create %s", psz_filename );
}
}
#elif defined( HAVE_ERRNO_H )
# if defined( WIN32 )
if( mkdir( psz_filename ) && errno != EEXIST )
# else
if( mkdir( psz_filename, 0755 ) && errno != EEXIST )
# endif
{
msg_Err( p_this, "could not create %s (%s)",
psz_filename, strerror(errno) );
}
#else
if( mkdir( psz_filename ) )
{
msg_Err( p_this, "could not create %s", psz_filename );
}
#endif
strcat( psz_filename, "/" CONFIG_FILE );
msg_Dbg( p_this, "opening config file %s", psz_filename );
file = fopen( psz_filename, "rt" );
if( !file )
{
msg_Warn( p_this, "config file %s does not exist yet", psz_filename );
}
else
{
/* look for file size */
fseek( file, 0L, SEEK_END );
i_sizebuf = ftell( file );
fseek( file, 0L, SEEK_SET );
}
p_bigbuffer = p_index = malloc( i_sizebuf+1 );
if( !p_bigbuffer )
{
msg_Err( p_this, "out of memory" );
if( file ) fclose( file );
free( psz_filename );
vlc_mutex_unlock( &p_this->p_vlc->config_lock );
return -1;
}
p_bigbuffer[0] = 0;
/* List all available modules */
p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
/* backup file into memory, we only need to backup the sections we won't
* save later on */
b_backup = 0;
while( file && fgets( p_line, 1024, file ) )
{
if( (p_line[0] == '[') && (p_index2 = strchr(p_line,']')))
{
/* we found a section, check if we need to do a backup */
for( i_index = 0; i_index < p_list->i_count; i_index++ )
{
p_parser = (module_t *)p_list->p_values[i_index].p_object ;
if( ((p_index2 - &p_line[1])
== (int)strlen(p_parser->psz_object_name) )
&& !memcmp( &p_line[1], p_parser->psz_object_name,
strlen(p_parser->psz_object_name) ) )
{
if( !psz_module_name )
break;
else if( !strcmp( psz_module_name,
p_parser->psz_object_name ) )
break;
}
}
if( i_index == p_list->i_count )
{
/* we don't have this section in our list so we need to back
* it up */
*p_index2 = 0;
msg_Dbg( p_this, "backing up config for unknown module \"%s\"",
&p_line[1] );
*p_index2 = ']';
b_backup = 1;
}
else
{
b_backup = 0;
}
}
/* save line if requested and line is valid (doesn't begin with a
* space, tab, or eol) */
if( b_backup && (p_line[0] != '\n') && (p_line[0] != ' ')
&& (p_line[0] != '\t') )
{
strcpy( p_index, p_line );
p_index += strlen( p_line );
}
}
if( file ) fclose( file );
/*
* Save module config in file
*/
file = fopen( psz_filename, "wt" );
if( !file )
{
msg_Warn( p_this, "could not open config file %s for writing",
psz_filename );
free( psz_filename );
vlc_list_release( p_list );
vlc_mutex_unlock( &p_this->p_vlc->config_lock );
return -1;
}
fprintf( file, "###\n### " COPYRIGHT_MESSAGE "\n###\n\n" );
/* Look for the selected module, if NULL then save everything */
for( i_index = 0; i_index < p_list->i_count; i_index++ )
{
p_parser = (module_t *)p_list->p_values[i_index].p_object ;
if( psz_module_name && strcmp( psz_module_name,
p_parser->psz_object_name ) )
continue;
if( !p_parser->i_config_items )
continue;
msg_Dbg( p_this, "saving config for module \"%s\"",
p_parser->psz_object_name );
fprintf( file, "[%s]", p_parser->psz_object_name );
if( p_parser->psz_longname )
fprintf( file, " # %s\n\n", p_parser->psz_longname );
else
fprintf( file, "\n\n" );
for( p_item = p_parser->p_config;
p_item->i_type != CONFIG_HINT_END;
p_item++ )
{
if( p_item->i_type & CONFIG_HINT )
/* ignore hints */
continue;
switch( p_item->i_type )
{
case CONFIG_ITEM_BOOL:
case CONFIG_ITEM_INTEGER:
if( p_item->psz_text )
fprintf( file, "# %s (%s)\n", p_item->psz_text,
(p_item->i_type == CONFIG_ITEM_BOOL) ?
_("boolean") : _("integer") );
fprintf( file, "%s=%i\n", p_item->psz_name, p_item->i_value );
break;
case CONFIG_ITEM_FLOAT:
if( p_item->psz_text )
fprintf( file, "# %s (%s)\n", p_item->psz_text,
_("float") );
fprintf( file, "%s=%f\n", p_item->psz_name,
(double)p_item->f_value );
break;
default:
if( p_item->psz_text )
fprintf( file, "# %s (%s)\n", p_item->psz_text,
_("string") );
fprintf( file, "%s=%s\n", p_item->psz_name,
p_item->psz_value ? p_item->psz_value : "" );
}
}
fprintf( file, "\n" );
}
vlc_list_release( p_list );
/*
* Restore old settings from the config in file
*/
fputs( p_bigbuffer, file );
free( p_bigbuffer );
fclose( file );
free( psz_filename );
vlc_mutex_unlock( &p_this->p_vlc->config_lock );
return 0;
}
/*****************************************************************************
* config_LoadCmdLine: parse command line
*****************************************************************************
* Parse command line for configuration options.
* Now that the module_bank has been initialized, we can dynamically
* generate the longopts structure used by getops. We have to do it this way
* because we don't know (and don't want to know) in advance the configuration
* options used (ie. exported) by each module.
*****************************************************************************/
int __config_LoadCmdLine( vlc_object_t *p_this, int *pi_argc, char *ppsz_argv[],
vlc_bool_t b_ignore_errors )
{
int i_cmd, i_index, i_opts, i_shortopts, flag, i_verbose = 0;
module_t *p_parser;
vlc_list_t *p_list;
module_config_t *p_item;
struct option *p_longopts;
int i_modules_index;
/* Short options */
module_config_t *pp_shortopts[256];
char *psz_shortopts;
/* Set default configuration and copy arguments */
p_this->p_vlc->i_argc = *pi_argc;
p_this->p_vlc->ppsz_argv = ppsz_argv;
p_this->p_vlc->p_channel = NULL;
#ifdef SYS_DARWIN
/* When vlc.app is run by double clicking in Mac OS X, the 2nd arg
* is the PSN - process serial number (a unique PID-ish thingie)
* still ok for real Darwin & when run from command line */
if ( (*pi_argc > 1) && (strncmp( ppsz_argv[ 1 ] , "-psn" , 4 ) == 0) )
/* for example -psn_0_9306113 */
{
/* GDMF!... I can't do this or else the MacOSX window server will
* not pick up the PSN and not register the app and we crash...
* hence the following kludge otherwise we'll get confused w/ argv[1]
* being an input file name */
#if 0
ppsz_argv[ 1 ] = NULL;
#endif
*pi_argc = *pi_argc - 1;
pi_argc--;
return 0;
}
#endif
/* List all modules */
p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
/*
* Generate the longopts and shortopts structures used by getopt_long
*/
i_opts = 0;
for( i_modules_index = 0; i_modules_index < p_list->i_count;
i_modules_index++ )
{
p_parser = (module_t *)p_list->p_values[i_modules_index].p_object ;
/* count the number of exported configuration options (to allocate
* longopts). We also need to allocate space for too options when
* dealing with boolean to allow for --foo and --no-foo */
i_opts += p_parser->i_config_items
+ 2 * p_parser->i_bool_items;
}
p_longopts = malloc( sizeof(struct option) * (i_opts + 1) );
if( p_longopts == NULL )
{
msg_Err( p_this, "out of memory" );
vlc_list_release( p_list );
return -1;
}
psz_shortopts = malloc( sizeof( char ) * (2 * i_opts + 1) );
if( psz_shortopts == NULL )
{
msg_Err( p_this, "out of memory" );
free( p_longopts );
vlc_list_release( p_list );
return -1;
}
/* If we are requested to ignore errors, then we must work on a copy
* of the ppsz_argv array, otherwise getopt_long will reorder it for
* us, ignoring the arity of the options */
if( b_ignore_errors )
{
ppsz_argv = (char**)malloc( *pi_argc * sizeof(char *) );
if( ppsz_argv == NULL )
{
msg_Err( p_this, "out of memory" );
free( psz_shortopts );
free( p_longopts );
vlc_list_release( p_list );
return -1;
}
memcpy( ppsz_argv, p_this->p_vlc->ppsz_argv,
*pi_argc * sizeof(char *) );
}
i_shortopts = 0;
for( i_index = 0; i_index < 256; i_index++ )
{
pp_shortopts[i_index] = NULL;
}
/* Fill the p_longopts and psz_shortopts structures */
i_index = 0;
for( i_modules_index = 0; i_modules_index < p_list->i_count;
i_modules_index++ )
{
p_parser = (module_t *)p_list->p_values[i_modules_index].p_object ;
if( !p_parser->i_config_items )
continue;
for( p_item = p_parser->p_config;
p_item->i_type != CONFIG_HINT_END;
p_item++ )
{
/* Ignore hints */
if( p_item->i_type & CONFIG_HINT )
continue;
/* Add item to long options */
p_longopts[i_index].name = strdup( p_item->psz_name );
if( p_longopts[i_index].name == NULL ) continue;
p_longopts[i_index].has_arg =
(p_item->i_type == CONFIG_ITEM_BOOL)?
no_argument : required_argument;
p_longopts[i_index].flag = &flag;
p_longopts[i_index].val = 0;
i_index++;
/* When dealing with bools we also need to add the --no-foo
* option */
if( p_item->i_type == CONFIG_ITEM_BOOL )
{
char *psz_name = malloc( strlen(p_item->psz_name) + 3 );
if( psz_name == NULL ) continue;
strcpy( psz_name, "no" );
strcat( psz_name, p_item->psz_name );
p_longopts[i_index].name = psz_name;
p_longopts[i_index].has_arg = no_argument;
p_longopts[i_index].flag = &flag;
p_longopts[i_index].val = 1;
i_index++;
psz_name = malloc( strlen(p_item->psz_name) + 4 );
if( psz_name == NULL ) continue;
strcpy( psz_name, "no-" );
strcat( psz_name, p_item->psz_name );
p_longopts[i_index].name = psz_name;
p_longopts[i_index].has_arg = no_argument;
p_longopts[i_index].flag = &flag;
p_longopts[i_index].val = 1;
i_index++;
}
/* If item also has a short option, add it */
if( p_item->i_short )
{
pp_shortopts[(int)p_item->i_short] = p_item;
psz_shortopts[i_shortopts] = p_item->i_short;
i_shortopts++;
if( p_item->i_type != CONFIG_ITEM_BOOL )
{
psz_shortopts[i_shortopts] = ':';
i_shortopts++;
if( p_item->i_short == 'v' )
{
psz_shortopts[i_shortopts] = ':';
i_shortopts++;
}
}
}
}
}
/* We don't need the module list anymore */
vlc_list_release( p_list );
/* Close the longopts and shortopts structures */
memset( &p_longopts[i_index], 0, sizeof(struct option) );
psz_shortopts[i_shortopts] = '\0';
/*
* Parse the command line options
*/
opterr = 0;
optind = 1;
while( ( i_cmd = getopt_long( *pi_argc, ppsz_argv, psz_shortopts,
p_longopts, &i_index ) ) != EOF )
{
/* A long option has been recognized */
if( i_cmd == 0 )
{
module_config_t *p_conf;
char *psz_name = (char *)p_longopts[i_index].name;
/* Check if we deal with a --nofoo or --no-foo long option */
if( flag ) psz_name += psz_name[2] == '-' ? 3 : 2;
/* Store the configuration option */
p_conf = config_FindConfig( p_this, psz_name );
if( p_conf ) switch( p_conf->i_type )
{
case CONFIG_ITEM_STRING:
case CONFIG_ITEM_FILE:
case CONFIG_ITEM_DIRECTORY:
case CONFIG_ITEM_MODULE:
config_PutPsz( p_this, psz_name, optarg );
break;
case CONFIG_ITEM_INTEGER:
config_PutInt( p_this, psz_name, atoi(optarg));
break;
case CONFIG_ITEM_FLOAT:
config_PutFloat( p_this, psz_name, (float)atof(optarg) );
break;
case CONFIG_ITEM_BOOL:
config_PutInt( p_this, psz_name, !flag );
break;
}
continue;
}
/* A short option has been recognized */
if( pp_shortopts[i_cmd] != NULL )
{
switch( pp_shortopts[i_cmd]->i_type )
{
case CONFIG_ITEM_STRING:
case CONFIG_ITEM_FILE:
case CONFIG_ITEM_DIRECTORY:
case CONFIG_ITEM_MODULE:
config_PutPsz( p_this, pp_shortopts[i_cmd]->psz_name, optarg );
break;
case CONFIG_ITEM_INTEGER:
if( i_cmd == 'v' )
{
if( optarg )
{
if( *optarg == 'v' ) /* eg. -vvv */
{
i_verbose++;
while( *optarg == 'v' )
{
i_verbose++;
optarg++;
}
}
else
{
i_verbose += atoi( optarg ); /* eg. -v2 */
}
}
else
{
i_verbose++; /* -v */
}
config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
i_verbose );
}
else
{
config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
atoi(optarg) );
}
break;
case CONFIG_ITEM_BOOL:
config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name, 1 );
break;
}
continue;
}
/* Internal error: unknown option */
if( !b_ignore_errors )
{
fprintf( stderr, "%s: unknown option ",
p_this->p_vlc->psz_object_name );
if( optopt )
{
fprintf( stderr, "`-%c'\n", optopt );
}
else
{
fprintf( stderr, "`%s'\n", ppsz_argv[optind-1] );
}
fprintf( stderr, "Try `%s --help' for more information.\n",
p_this->p_vlc->psz_object_name );
free( p_longopts );
free( psz_shortopts );
if( b_ignore_errors ) free( ppsz_argv );
return -1;
}
}
/* Free allocated resources */
for( i_index = 0; p_longopts[i_index].name; i_index++ )
free( (char *)p_longopts[i_index].name );
free( p_longopts );
free( psz_shortopts );
if( b_ignore_errors ) free( ppsz_argv );
return 0;
}
/*****************************************************************************
* config_GetHomeDir: find the user's home directory.
*****************************************************************************
* This function will try by different ways to find the user's home path.
* Note that this function is not reentrant, it should be called only once
* at the beginning of main where the result will be stored for later use.
*****************************************************************************/
char *config_GetHomeDir( void )
{
char *p_tmp, *p_homedir = NULL;
#if defined(HAVE_GETPWUID)
struct passwd *p_pw = NULL;
#endif
#if defined(WIN32) || defined(UNDER_CE)
typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
LPTSTR );
# define CSIDL_FLAG_CREATE 0x8000
# define CSIDL_APPDATA 0x1A
# define SHGFP_TYPE_CURRENT 0
HINSTANCE shfolder_dll;
SHGETFOLDERPATH SHGetFolderPath ;
/* load the shell32 dll to retreive SHGetFolderPath */
if( ( shfolder_dll = LoadLibrary("shfolder.dll") ) != NULL )
{
SHGetFolderPath = (void *)GetProcAddress( shfolder_dll,
"SHGetFolderPathA" );
if ( SHGetFolderPath != NULL )
{
p_homedir = (char *)malloc( MAX_PATH );
if( !p_homedir )
{
return NULL;
}
/* get the "Application Data" folder for the current user */
if( S_OK == SHGetFolderPath( NULL,
CSIDL_APPDATA | CSIDL_FLAG_CREATE,
NULL, SHGFP_TYPE_CURRENT,
p_homedir ) )
{
FreeLibrary( shfolder_dll );
return p_homedir;
}
free( p_homedir );
}
FreeLibrary( shfolder_dll );
}
#endif
#if defined(HAVE_GETPWUID)
if( ( p_pw = getpwuid( getuid() ) ) == NULL )
#endif
{
if( ( p_tmp = getenv( "HOME" ) ) == NULL )
{
if( ( p_tmp = getenv( "TMP" ) ) == NULL )
{
p_tmp = "/tmp";
}
}
p_homedir = strdup( p_tmp );
}
#if defined(HAVE_GETPWUID)
else
{
p_homedir = strdup( p_pw->pw_dir );
}
#endif
return p_homedir;
}