modules.c
上传用户:riyaled888
上传日期:2009-03-27
资源大小:7338k
文件大小:68k
- /*****************************************************************************
- * modules.c : Builtin and plugin modules management functions
- *****************************************************************************
- * Copyright (C) 2001-2004 VideoLAN
- * $Id: modules.c 9144 2004-11-04 22:54:17Z courmisch $
- *
- * Authors: Sam Hocevar <sam@zoy.org>
- * Ethan C. Baldridge <BaldridgeE@cadmus.com>
- * Hans-Peter Jansen <hpj@urpla.net>
- * Gildas Bazin <gbazin@videolan.org>
- *
- * 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.
- *****************************************************************************/
- /* Some faulty libcs have a broken struct dirent when _FILE_OFFSET_BITS
- * is set to 64. Don't try to be cleverer. */
- #ifdef _FILE_OFFSET_BITS
- #undef _FILE_OFFSET_BITS
- #endif
- #include <stdlib.h> /* free(), strtol() */
- #include <stdio.h> /* sprintf() */
- #include <string.h> /* strdup() */
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #ifdef HAVE_DIRENT_H
- # include <dirent.h>
- #elif defined( UNDER_CE )
- # include <windows.h> /* GetFileAttributes() */
- #else
- # include "../extras/dirent.h"
- #endif
- #ifdef HAVE_SYS_TYPES_H
- # include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_STAT_H
- # include <sys/stat.h>
- #endif
- #ifdef HAVE_UNISTD_H
- # include <unistd.h>
- #endif
- #define HAVE_DYNAMIC_PLUGINS
- #if defined(HAVE_DL_DYLD)
- # if defined(HAVE_MACH_O_DYLD_H)
- # include <mach-o/dyld.h>
- # endif
- #elif defined(HAVE_DL_BEOS)
- # if defined(HAVE_IMAGE_H)
- # include <image.h>
- # endif
- #elif defined(HAVE_DL_WINDOWS)
- # include <windows.h>
- #elif defined(HAVE_DL_DLOPEN)
- # if defined(HAVE_DLFCN_H) /* Linux, BSD, Hurd */
- # include <dlfcn.h>
- # endif
- # if defined(HAVE_SYS_DL_H)
- # include <sys/dl.h>
- # endif
- #elif defined(HAVE_DL_SHL_LOAD)
- # if defined(HAVE_DL_H)
- # include <dl.h>
- # endif
- #else
- # undef HAVE_DYNAMIC_PLUGINS
- #endif
- #include "vlc_error.h"
- #include "vlc_interface.h"
- #include "intf_eject.h"
- #include "vlc_playlist.h"
- #include "vlc_video.h"
- #include "video_output.h"
- #include "vout_synchro.h"
- #include "vlc_spu.h"
- #include "audio_output.h"
- #include "aout_internal.h"
- #include "stream_output.h"
- #include "osd.h"
- #include "vlc_httpd.h"
- #include "vlc_tls.h"
- #include "iso_lang.h"
- #include "charset.h"
- #include "vlc_block.h"
- #include "vlc_vlm.h"
- #ifdef HAVE_DYNAMIC_PLUGINS
- # include "modules_plugin.h"
- #endif
- #if defined( UNDER_CE )
- # include "modules_builtin_evc.h"
- #elif defined( _MSC_VER )
- # include "modules_builtin_msvc.h"
- #else
- # include "modules_builtin.h"
- #endif
- #include "network.h"
- #if defined( WIN32) || defined( UNDER_CE )
- /* Avoid name collisions */
- # define LoadModule(a,b,c) _LoadModule(a,b,c)
- #endif
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- #ifdef HAVE_DYNAMIC_PLUGINS
- static void AllocateAllPlugins ( vlc_object_t * );
- static void AllocatePluginDir ( vlc_object_t *, const char *, int );
- static int AllocatePluginFile ( vlc_object_t *, char *, int64_t, int64_t );
- static module_t * AllocatePlugin( vlc_object_t *, char * );
- #endif
- static int AllocateBuiltinModule( vlc_object_t *, int ( * ) ( module_t * ) );
- static int DeleteModule ( module_t * );
- #ifdef HAVE_DYNAMIC_PLUGINS
- static void DupModule ( module_t * );
- static void UndupModule ( module_t * );
- static int CallEntry ( module_t * );
- static int LoadModule ( vlc_object_t *, char *, module_handle_t * );
- static void CloseModule ( module_handle_t );
- static void * GetSymbol ( module_handle_t, const char * );
- static void CacheLoad ( vlc_object_t * );
- static int CacheLoadConfig ( module_t *, FILE * );
- static void CacheSave ( vlc_object_t * );
- static void CacheSaveConfig ( module_t *, FILE * );
- static char * CacheName ( void );
- static void CacheMerge ( vlc_object_t *, module_t *, module_t * );
- static module_cache_t * CacheFind( vlc_object_t *, char *, int64_t, int64_t );
- #if defined(HAVE_DL_WINDOWS)
- static char * GetWindowsError ( void );
- #endif
- #endif
- /*****************************************************************************
- * module_InitBank: create the module bank.
- *****************************************************************************
- * This function creates a module bank structure which will be filled later
- * on with all the modules found.
- *****************************************************************************/
- void __module_InitBank( vlc_object_t *p_this )
- {
- module_bank_t *p_bank;
- vlc_value_t lockval;
- var_Create( p_this->p_libvlc, "libvlc", VLC_VAR_MUTEX );
- var_Get( p_this->p_libvlc, "libvlc", &lockval );
- vlc_mutex_lock( lockval.p_address );
- if( p_this->p_libvlc->p_module_bank )
- {
- p_this->p_libvlc->p_module_bank->i_usage++;
- vlc_mutex_unlock( lockval.p_address );
- var_Destroy( p_this->p_libvlc, "libvlc" );
- return;
- }
- vlc_mutex_unlock( lockval.p_address );
- var_Destroy( p_this->p_libvlc, "libvlc" );
- p_bank = vlc_object_create( p_this, sizeof(module_bank_t) );
- p_bank->psz_object_name = "module bank";
- p_bank->i_usage = 1;
- p_bank->i_cache = p_bank->i_loaded_cache = 0;
- p_bank->pp_cache = p_bank->pp_loaded_cache = 0;
- p_bank->b_cache = p_bank->b_cache_dirty =
- p_bank->b_cache_delete = VLC_FALSE;
- /*
- * Store the symbols to be exported
- */
- #ifdef HAVE_DYNAMIC_PLUGINS
- STORE_SYMBOLS( &p_bank->symbols );
- #endif
- /* Everything worked, attach the object */
- p_this->p_libvlc->p_module_bank = p_bank;
- vlc_object_attach( p_bank, p_this->p_libvlc );
- module_LoadMain( p_this );
- return;
- }
- /*****************************************************************************
- * module_ResetBank: reset the module bank.
- *****************************************************************************
- * This function resets the module bank by unloading all unused plugin
- * modules.
- *****************************************************************************/
- void __module_ResetBank( vlc_object_t *p_this )
- {
- msg_Err( p_this, "FIXME: module_ResetBank unimplemented" );
- return;
- }
- /*****************************************************************************
- * module_EndBank: empty the module bank.
- *****************************************************************************
- * This function unloads all unused plugin modules and empties the module
- * bank in case of success.
- *****************************************************************************/
- void __module_EndBank( vlc_object_t *p_this )
- {
- module_t * p_next;
- vlc_value_t lockval;
- var_Create( p_this->p_libvlc, "libvlc", VLC_VAR_MUTEX );
- var_Get( p_this->p_libvlc, "libvlc", &lockval );
- vlc_mutex_lock( lockval.p_address );
- if( !p_this->p_libvlc->p_module_bank )
- {
- vlc_mutex_unlock( lockval.p_address );
- var_Destroy( p_this->p_libvlc, "libvlc" );
- return;
- }
- if( --p_this->p_libvlc->p_module_bank->i_usage )
- {
- vlc_mutex_unlock( lockval.p_address );
- var_Destroy( p_this->p_libvlc, "libvlc" );
- return;
- }
- vlc_mutex_unlock( lockval.p_address );
- var_Destroy( p_this->p_libvlc, "libvlc" );
- #ifdef HAVE_DYNAMIC_PLUGINS
- #define p_bank p_this->p_libvlc->p_module_bank
- if( p_bank->b_cache ) CacheSave( p_this );
- while( p_bank->i_loaded_cache-- )
- {
- free( p_bank->pp_loaded_cache[p_bank->i_loaded_cache]->psz_file );
- free( p_bank->pp_loaded_cache[p_bank->i_loaded_cache] );
- if( !p_bank->i_loaded_cache ) free( p_bank->pp_loaded_cache );
- }
- while( p_bank->i_cache-- )
- {
- free( p_bank->pp_cache[p_bank->i_cache]->psz_file );
- free( p_bank->pp_cache[p_bank->i_cache] );
- if( !p_bank->i_cache ) free( p_bank->pp_cache );
- }
- #undef p_bank
- #endif
- vlc_object_detach( p_this->p_libvlc->p_module_bank );
- while( p_this->p_libvlc->p_module_bank->i_children )
- {
- p_next = (module_t *)p_this->p_libvlc->p_module_bank->pp_children[0];
- if( DeleteModule( p_next ) )
- {
- /* Module deletion failed */
- msg_Err( p_this, "module "%s" can't be removed, trying harder",
- p_next->psz_object_name );
- /* We just free the module by hand. Niahahahahaha. */
- vlc_object_detach( p_next );
- vlc_object_destroy( p_next );
- }
- }
- vlc_object_destroy( p_this->p_libvlc->p_module_bank );
- return;
- }
- /*****************************************************************************
- * module_LoadMain: load the main program info into the module bank.
- *****************************************************************************
- * This function fills the module bank structure with the main module infos.
- * This is very useful as it will allow us to consider the main program just
- * as another module, and for instance the configuration options of main will
- * be available in the module bank structure just as for every other module.
- *****************************************************************************/
- void __module_LoadMain( vlc_object_t *p_this )
- {
- AllocateBuiltinModule( p_this, vlc_entry__main );
- }
- /*****************************************************************************
- * module_LoadBuiltins: load all modules which we built with.
- *****************************************************************************
- * This function fills the module bank structure with the builtin modules.
- *****************************************************************************/
- void __module_LoadBuiltins( vlc_object_t * p_this )
- {
- msg_Dbg( p_this, "checking builtin modules" );
- ALLOCATE_ALL_BUILTINS();
- }
- /*****************************************************************************
- * module_LoadPlugins: load all plugin modules we can find.
- *****************************************************************************
- * This function fills the module bank structure with the plugin modules.
- *****************************************************************************/
- void __module_LoadPlugins( vlc_object_t * p_this )
- {
- #ifdef HAVE_DYNAMIC_PLUGINS
- msg_Dbg( p_this, "checking plugin modules" );
- if( config_GetInt( p_this, "plugins-cache" ) )
- p_this->p_libvlc->p_module_bank->b_cache = VLC_TRUE;
- if( p_this->p_libvlc->p_module_bank->b_cache ||
- p_this->p_libvlc->p_module_bank->b_cache_delete ) CacheLoad( p_this );
- AllocateAllPlugins( p_this );
- #endif
- }
- /*****************************************************************************
- * module_Need: return the best module function, given a capability list.
- *****************************************************************************
- * This function returns the module that best fits the asked capabilities.
- *****************************************************************************/
- module_t * __module_Need( vlc_object_t *p_this, const char *psz_capability,
- const char *psz_name, vlc_bool_t b_strict )
- {
- typedef struct module_list_t module_list_t;
- struct module_list_t
- {
- module_t *p_module;
- int i_score;
- vlc_bool_t b_force;
- module_list_t *p_next;
- };
- module_list_t *p_list, *p_first, *p_tmp;
- vlc_list_t *p_all;
- int i_which_module, i_index = 0;
- vlc_bool_t b_intf = VLC_FALSE;
- module_t *p_module;
- int i_shortcuts = 0;
- char *psz_shortcuts = NULL, *psz_var = NULL;
- vlc_bool_t b_force_backup = p_this->b_force;
- msg_Dbg( p_this, "looking for %s module", psz_capability );
- /* Deal with variables */
- if( psz_name && psz_name[0] == '$' )
- {
- vlc_value_t val;
- var_Create( p_this, psz_name + 1, VLC_VAR_MODULE | VLC_VAR_DOINHERIT );
- var_Get( p_this, psz_name + 1, &val );
- psz_var = val.psz_string;
- psz_name = psz_var;
- }
- /* Count how many different shortcuts were asked for */
- if( psz_name && *psz_name )
- {
- char *psz_parser, *psz_last_shortcut;
- /* If the user wants none, give him none. */
- if( !strcmp( psz_name, "none" ) )
- {
- if( psz_var ) free( psz_var );
- return NULL;
- }
- i_shortcuts++;
- psz_shortcuts = psz_last_shortcut = strdup( psz_name );
- for( psz_parser = psz_shortcuts; *psz_parser; psz_parser++ )
- {
- if( *psz_parser == ',' )
- {
- *psz_parser = ' ';
- i_shortcuts++;
- psz_last_shortcut = psz_parser + 1;
- }
- }
- /* Check if the user wants to override the "strict" mode */
- if( psz_last_shortcut )
- {
- if( !strcmp(psz_last_shortcut, "none") )
- {
- b_strict = VLC_TRUE;
- i_shortcuts--;
- }
- else if( !strcmp(psz_last_shortcut, "any") )
- {
- b_strict = VLC_FALSE;
- i_shortcuts--;
- }
- }
- }
- /* Sort the modules and test them */
- p_all = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
- p_list = malloc( p_all->i_count * sizeof( module_list_t ) );
- p_first = NULL;
- /* Parse the module list for capabilities and probe each of them */
- for( i_which_module = 0; i_which_module < p_all->i_count; i_which_module++ )
- {
- int i_shortcut_bonus = 0;
- p_module = (module_t *)p_all->p_values[i_which_module].p_object;
- /* Test that this module can do what we need */
- if( strcmp( p_module->psz_capability, psz_capability ) )
- {
- /* Don't recurse through the sub-modules because vlc_list_find()
- * will list them anyway. */
- continue;
- }
- /* Test if we have the required CPU */
- if( (p_module->i_cpu & p_this->p_libvlc->i_cpu) != p_module->i_cpu )
- {
- continue;
- }
- /* If we required a shortcut, check this plugin provides it. */
- if( i_shortcuts > 0 )
- {
- vlc_bool_t b_trash;
- int i_dummy, i_short = i_shortcuts;
- char *psz_name = psz_shortcuts;
- /* Let's drop modules with a <= 0 score (unless they are
- * explicitly requested) */
- b_trash = p_module->i_score <= 0;
- while( i_short > 0 )
- {
- for( i_dummy = 0; p_module->pp_shortcuts[i_dummy]; i_dummy++ )
- {
- if( !strcasecmp( psz_name,
- p_module->pp_shortcuts[i_dummy] ) )
- {
- /* Found it */
- b_trash = VLC_FALSE;
- i_shortcut_bonus = i_short * 10000;
- break;
- }
- }
- if( i_shortcut_bonus )
- {
- /* We found it... remember ? */
- break;
- }
- /* Go to the next shortcut... This is so lame! */
- while( *psz_name )
- {
- psz_name++;
- }
- psz_name++;
- i_short--;
- }
- /* If we are in "strict" mode and we couldn't
- * find the module in the list of provided shortcuts,
- * then kick the bastard out of here!!! */
- if( i_short == 0 && b_strict )
- {
- b_trash = VLC_TRUE;
- }
- if( b_trash )
- {
- continue;
- }
- }
- /* If we didn't require a shortcut, trash <= 0 scored plugins */
- else if( p_module->i_score <= 0 )
- {
- continue;
- }
- /* Special case: test if we requested a particular intf plugin */
- if( !i_shortcuts && p_module->psz_program
- && !strcmp( psz_capability, "interface" )
- && !strcmp( p_module->psz_program,
- p_this->p_vlc->psz_object_name ) )
- {
- if( !b_intf )
- {
- /* Remove previous non-matching plugins */
- i_index = 0;
- b_intf = VLC_TRUE;
- }
- }
- else if( b_intf )
- {
- /* This one doesn't match */
- continue;
- }
- /* Store this new module */
- p_list[ i_index ].p_module = p_module;
- p_list[ i_index ].i_score = p_module->i_score + i_shortcut_bonus;
- p_list[ i_index ].b_force = !!i_shortcut_bonus;
- /* Add it to the modules-to-probe list */
- if( i_index == 0 )
- {
- p_list[ 0 ].p_next = NULL;
- p_first = p_list;
- }
- else
- {
- /* Ok, so at school you learned that quicksort is quick, and
- * bubble sort sucks raw eggs. But that's when dealing with
- * thousands of items. Here we have barely 50. */
- module_list_t *p_newlist = p_first;
- if( p_first->i_score < p_list[ i_index ].i_score )
- {
- p_list[ i_index ].p_next = p_first;
- p_first = &p_list[ i_index ];
- }
- else
- {
- while( p_newlist->p_next != NULL &&
- p_newlist->p_next->i_score >= p_list[ i_index ].i_score )
- {
- p_newlist = p_newlist->p_next;
- }
- p_list[ i_index ].p_next = p_newlist->p_next;
- p_newlist->p_next = &p_list[ i_index ];
- }
- }
- i_index++;
- }
- msg_Dbg( p_this, "probing %i candidate%s",
- i_index, i_index == 1 ? "" : "s" );
- /* Lock all candidate modules */
- p_tmp = p_first;
- while( p_tmp != NULL )
- {
- vlc_object_yield( p_tmp->p_module );
- p_tmp = p_tmp->p_next;
- }
- /* We can release the list, interesting modules were yielded */
- vlc_list_release( p_all );
- /* Parse the linked list and use the first successful module */
- p_tmp = p_first;
- while( p_tmp != NULL )
- {
- #ifdef HAVE_DYNAMIC_PLUGINS
- /* Make sure the module is loaded in mem */
- module_t *p_module = p_tmp->p_module->b_submodule ?
- (module_t *)p_tmp->p_module->p_parent : p_tmp->p_module;
- if( !p_module->b_builtin && !p_module->b_loaded )
- {
- module_t *p_new_module =
- AllocatePlugin( p_this, p_module->psz_filename );
- if( p_new_module )
- {
- CacheMerge( p_this, p_module, p_new_module );
- vlc_object_attach( p_new_module, p_module );
- DeleteModule( p_new_module );
- }
- }
- #endif
- p_this->b_force = p_tmp->b_force;
- if( p_tmp->p_module->pf_activate
- && p_tmp->p_module->pf_activate( p_this ) == VLC_SUCCESS )
- {
- break;
- }
- vlc_object_release( p_tmp->p_module );
- p_tmp = p_tmp->p_next;
- }
- /* Store the locked module value */
- if( p_tmp != NULL )
- {
- p_module = p_tmp->p_module;
- p_tmp = p_tmp->p_next;
- }
- else
- {
- p_module = NULL;
- }
- /* Unlock the remaining modules */
- while( p_tmp != NULL )
- {
- vlc_object_release( p_tmp->p_module );
- p_tmp = p_tmp->p_next;
- }
- free( p_list );
- p_this->b_force = b_force_backup;
- if( p_module != NULL )
- {
- msg_Dbg( p_module, "using %s module "%s"",
- psz_capability, p_module->psz_object_name );
- }
- else if( p_first == NULL )
- {
- if( !strcmp( psz_capability, "access_demux" ) )
- {
- msg_Warn( p_this, "no %s module matched "%s"",
- psz_capability, (psz_name && *psz_name) ? psz_name : "any" );
- }
- else
- {
- msg_Err( p_this, "no %s module matched "%s"",
- psz_capability, (psz_name && *psz_name) ? psz_name : "any" );
- }
- }
- else if( psz_name != NULL && *psz_name )
- {
- msg_Warn( p_this, "no %s module matching "%s" could be loaded",
- psz_capability, (psz_name && *psz_name) ? psz_name : "any" );
- }
- if( psz_shortcuts )
- {
- free( psz_shortcuts );
- }
- if( psz_var )
- {
- free( psz_var );
- }
- /* Don't forget that the module is still locked */
- return p_module;
- }
- /*****************************************************************************
- * module_Unneed: decrease the usage count of a module.
- *****************************************************************************
- * This function must be called by the thread that called module_Need, to
- * decrease the reference count and allow for hiding of modules.
- *****************************************************************************/
- void __module_Unneed( vlc_object_t * p_this, module_t * p_module )
- {
- /* Use the close method */
- if( p_module->pf_deactivate )
- {
- p_module->pf_deactivate( p_this );
- }
- msg_Dbg( p_module, "unlocking module "%s"", p_module->psz_object_name );
- vlc_object_release( p_module );
- return;
- }
- /*****************************************************************************
- * Following functions are local.
- *****************************************************************************/
- /*****************************************************************************
- * AllocateAllPlugins: load all plugin modules we can find.
- *****************************************************************************/
- #ifdef HAVE_DYNAMIC_PLUGINS
- static void AllocateAllPlugins( vlc_object_t *p_this )
- {
- /* Yes, there are two NULLs because we replace one with "plugin-path". */
- #if defined( WIN32 ) || defined( UNDER_CE )
- char *path[] = { "modules", "", "plugins", 0, 0 };
- #else
- char *path[] = { "modules", PLUGIN_PATH, "plugins", 0, 0 };
- #endif
- char **ppsz_path = path;
- char *psz_fullpath;
- /* If the user provided a plugin path, we add it to the list */
- path[ sizeof(path)/sizeof(char*) - 2 ] =
- config_GetPsz( p_this, "plugin-path" );
- for( ; *ppsz_path != NULL ; ppsz_path++ )
- {
- if( !(*ppsz_path)[0] ) continue;
- #if defined( SYS_BEOS ) || defined( SYS_DARWIN ) || defined( WIN32 )
- /* Handle relative as well as absolute paths */
- #ifdef WIN32
- if( (*ppsz_path)[0] != '\' && (*ppsz_path)[0] != '/' &&
- (*ppsz_path)[1] != ':' )
- #else
- if( (*ppsz_path)[0] != '/' )
- #endif
- {
- int i_dirlen = strlen( *ppsz_path );
- i_dirlen += strlen( p_this->p_libvlc->psz_vlcpath ) + 2;
- psz_fullpath = malloc( i_dirlen );
- if( psz_fullpath == NULL )
- {
- continue;
- }
- #ifdef WIN32
- sprintf( psz_fullpath, "%s\%s",
- p_this->p_libvlc->psz_vlcpath, *ppsz_path );
- #else
- sprintf( psz_fullpath, "%s/%s",
- p_this->p_libvlc->psz_vlcpath, *ppsz_path );
- #endif
- }
- else
- #endif
- {
- psz_fullpath = strdup( *ppsz_path );
- }
- msg_Dbg( p_this, "recursively browsing `%s'", psz_fullpath );
- /* Don't go deeper than 5 subdirectories */
- AllocatePluginDir( p_this, psz_fullpath, 5 );
- free( psz_fullpath );
- }
- /* Free plugin-path */
- if( path[ sizeof(path)/sizeof(char*) - 2 ] )
- free( path[ sizeof(path)/sizeof(char*) - 2 ] );
- path[ sizeof(path)/sizeof(char*) - 2 ] = NULL;
- }
- /*****************************************************************************
- * AllocatePluginDir: recursively parse a directory to look for plugins
- *****************************************************************************/
- static void AllocatePluginDir( vlc_object_t *p_this, const char *psz_dir,
- int i_maxdepth )
- {
- #if defined( UNDER_CE ) || defined( _MSC_VER )
- #ifdef UNDER_CE
- wchar_t psz_wpath[MAX_PATH + 256];
- wchar_t psz_wdir[MAX_PATH];
- #endif
- char psz_path[MAX_PATH + 256];
- WIN32_FIND_DATA finddata;
- HANDLE handle;
- unsigned int rc;
- #else
- int i_dirlen;
- DIR * dir;
- struct dirent * file;
- #endif
- char * psz_file;
- if( p_this->p_vlc->b_die || i_maxdepth < 0 )
- {
- return;
- }
- #if defined( UNDER_CE ) || defined( _MSC_VER )
- #ifdef UNDER_CE
- MultiByteToWideChar( CP_ACP, 0, psz_dir, -1, psz_wdir, MAX_PATH );
- rc = GetFileAttributes( psz_wdir );
- if( !(rc & FILE_ATTRIBUTE_DIRECTORY) ) return; /* Not a directory */
- /* Parse all files in the directory */
- swprintf( psz_wpath, L"%ls\*", psz_wdir );
- #else
- rc = GetFileAttributes( psz_dir );
- if( !(rc & FILE_ATTRIBUTE_DIRECTORY) ) return; /* Not a directory */
- #endif
- /* Parse all files in the directory */
- sprintf( psz_path, "%s\*", psz_dir );
- #ifdef UNDER_CE
- handle = FindFirstFile( psz_wpath, &finddata );
- #else
- handle = FindFirstFile( psz_path, &finddata );
- #endif
- if( handle == INVALID_HANDLE_VALUE )
- {
- /* Empty directory */
- return;
- }
- /* Parse the directory and try to load all files it contains. */
- do
- {
- #ifdef UNDER_CE
- unsigned int i_len = wcslen( finddata.cFileName );
- swprintf( psz_wpath, L"%ls\%ls", psz_wdir, finddata.cFileName );
- sprintf( psz_path, "%s\%ls", psz_dir, finddata.cFileName );
- #else
- unsigned int i_len = strlen( finddata.cFileName );
- sprintf( psz_path, "%s\%s", psz_dir, finddata.cFileName );
- #endif
- /* Skip ".", ".." and anything starting with "." */
- if( !*finddata.cFileName || *finddata.cFileName == '.' )
- {
- if( !FindNextFile( handle, &finddata ) ) break;
- continue;
- }
- #ifdef UNDER_CE
- if( GetFileAttributes( psz_wpath ) & FILE_ATTRIBUTE_DIRECTORY )
- #else
- if( GetFileAttributes( psz_path ) & FILE_ATTRIBUTE_DIRECTORY )
- #endif
- {
- AllocatePluginDir( p_this, psz_path, i_maxdepth - 1 );
- }
- else if( i_len > strlen( LIBEXT )
- /* We only load files ending with LIBEXT */
- && !strncasecmp( psz_path + strlen( psz_path)
- - strlen( LIBEXT ),
- LIBEXT, strlen( LIBEXT ) ) )
- {
- WIN32_FILE_ATTRIBUTE_DATA attrbuf;
- int64_t i_time = 0, i_size = 0;
- #ifdef UNDER_CE
- if( GetFileAttributesEx( psz_wpath, GetFileExInfoStandard,
- &attrbuf ) )
- #else
- if( GetFileAttributesEx( psz_path, GetFileExInfoStandard,
- &attrbuf ) )
- #endif
- {
- i_time = attrbuf.ftLastWriteTime.dwHighDateTime;
- i_time <<= 32;
- i_time |= attrbuf.ftLastWriteTime.dwLowDateTime;
- i_size = attrbuf.nFileSizeHigh;
- i_size <<= 32;
- i_size |= attrbuf.nFileSizeLow;
- }
- psz_file = psz_path;
- AllocatePluginFile( p_this, psz_file, i_time, i_size );
- }
- }
- while( !p_this->p_vlc->b_die && FindNextFile( handle, &finddata ) );
- /* Close the directory */
- FindClose( handle );
- #else
- dir = opendir( psz_dir );
- if( !dir )
- {
- return;
- }
- i_dirlen = strlen( psz_dir );
- /* Parse the directory and try to load all files it contains. */
- while( !p_this->p_vlc->b_die && (file = readdir( dir )) )
- {
- struct stat statbuf;
- unsigned int i_len;
- int i_stat;
- /* Skip ".", ".." and anything starting with "." */
- if( !*file->d_name || *file->d_name == '.' )
- {
- continue;
- }
- i_len = strlen( file->d_name );
- psz_file = malloc( i_dirlen + 1 + i_len + 1 );
- #ifdef WIN32
- sprintf( psz_file, "%s\%s", psz_dir, file->d_name );
- #else
- sprintf( psz_file, "%s/%s", psz_dir, file->d_name );
- #endif
- i_stat = stat( psz_file, &statbuf );
- if( !i_stat && statbuf.st_mode & S_IFDIR )
- {
- AllocatePluginDir( p_this, psz_file, i_maxdepth - 1 );
- }
- else if( i_len > strlen( LIBEXT )
- /* We only load files ending with LIBEXT */
- && !strncasecmp( file->d_name + i_len - strlen( LIBEXT ),
- LIBEXT, strlen( LIBEXT ) ) )
- {
- int64_t i_time = 0, i_size = 0;
- if( !i_stat )
- {
- i_time = statbuf.st_mtime;
- i_size = statbuf.st_size;
- }
- AllocatePluginFile( p_this, psz_file, i_time, i_size );
- }
- free( psz_file );
- }
- /* Close the directory */
- closedir( dir );
- #endif
- }
- /*****************************************************************************
- * AllocatePluginFile: load a module into memory and initialize it.
- *****************************************************************************
- * This function loads a dynamically loadable module and allocates a structure
- * for its information data. The module can then be handled by module_Need
- * and module_Unneed. It can be removed by DeleteModule.
- *****************************************************************************/
- static int AllocatePluginFile( vlc_object_t * p_this, char * psz_file,
- int64_t i_file_time, int64_t i_file_size )
- {
- module_t * p_module;
- module_cache_t *p_cache_entry = NULL;
- /*
- * Check our plugins cache first then load plugin if needed
- */
- p_cache_entry =
- CacheFind( p_this, psz_file, i_file_time, i_file_size );
- if( !p_cache_entry )
- {
- p_module = AllocatePlugin( p_this, psz_file );
- }
- else
- {
- /* If junk dll, don't try to load it */
- if( p_cache_entry->b_junk )
- {
- p_module = NULL;
- }
- else
- {
- module_config_t *p_item;
- p_module = p_cache_entry->p_module;
- p_module->b_loaded = VLC_FALSE;
- /* For now we force loading if the module's config contains
- * callbacks or actions.
- * Could be optimized by adding an API call.*/
- for( p_item = p_module->p_config;
- p_item->i_type != CONFIG_HINT_END; p_item++ )
- {
- if( p_item->pf_callback || p_item->i_action )
- p_module = AllocatePlugin( p_this, psz_file );
- }
- }
- }
- if( p_module )
- {
- /* Everything worked fine !
- * The module is ready to be added to the list. */
- p_module->b_builtin = VLC_FALSE;
- /* msg_Dbg( p_this, "plugin "%s", %s",
- p_module->psz_object_name, p_module->psz_longname ); */
- vlc_object_attach( p_module, p_this->p_libvlc->p_module_bank );
- }
- if( !p_this->p_libvlc->p_module_bank->b_cache ) return 0;
- /* Add entry to cache */
- #define p_bank p_this->p_libvlc->p_module_bank
- p_bank->pp_cache =
- realloc( p_bank->pp_cache, (p_bank->i_cache + 1) * sizeof(void *) );
- p_bank->pp_cache[p_bank->i_cache] = malloc( sizeof(module_cache_t) );
- p_bank->pp_cache[p_bank->i_cache]->psz_file = strdup( psz_file );
- p_bank->pp_cache[p_bank->i_cache]->i_time = i_file_time;
- p_bank->pp_cache[p_bank->i_cache]->i_size = i_file_size;
- p_bank->pp_cache[p_bank->i_cache]->b_junk = p_module ? 0 : 1;
- p_bank->pp_cache[p_bank->i_cache]->p_module = p_module;
- p_bank->i_cache++;
- return p_module ? 0 : -1;
- }
- /*****************************************************************************
- * AllocatePlugin: load a module into memory and initialize it.
- *****************************************************************************
- * This function loads a dynamically loadable module and allocates a structure
- * for its information data. The module can then be handled by module_Need
- * and module_Unneed. It can be removed by DeleteModule.
- *****************************************************************************/
- static module_t * AllocatePlugin( vlc_object_t * p_this, char * psz_file )
- {
- module_t * p_module;
- module_handle_t handle;
- if( LoadModule( p_this, psz_file, &handle ) ) return NULL;
- /* Now that we have successfully loaded the module, we can
- * allocate a structure for it */
- p_module = vlc_object_create( p_this, VLC_OBJECT_MODULE );
- if( p_module == NULL )
- {
- msg_Err( p_this, "out of memory" );
- CloseModule( handle );
- return NULL;
- }
- /* We need to fill these since they may be needed by CallEntry() */
- p_module->psz_filename = psz_file;
- p_module->handle = handle;
- p_module->p_symbols = &p_this->p_libvlc->p_module_bank->symbols;
- p_module->b_loaded = VLC_TRUE;
- /* Initialize the module: fill p_module, default config */
- if( CallEntry( p_module ) != 0 )
- {
- /* We couldn't call module_init() */
- vlc_object_destroy( p_module );
- CloseModule( handle );
- return NULL;
- }
- DupModule( p_module );
- p_module->psz_filename = strdup( p_module->psz_filename );
- /* Everything worked fine ! The module is ready to be added to the list. */
- p_module->b_builtin = VLC_FALSE;
- return p_module;
- }
- /*****************************************************************************
- * DupModule: make a plugin module standalone.
- *****************************************************************************
- * This function duplicates all strings in the module, so that the dynamic
- * object can be unloaded. It acts recursively on submodules.
- *****************************************************************************/
- static void DupModule( module_t *p_module )
- {
- char **pp_shortcut;
- int i_submodule;
- for( pp_shortcut = p_module->pp_shortcuts ; *pp_shortcut ; pp_shortcut++ )
- {
- *pp_shortcut = strdup( *pp_shortcut );
- }
- /* We strdup() these entries so that they are still valid when the
- * module is unloaded. */
- p_module->psz_object_name = strdup( p_module->psz_object_name );
- p_module->psz_capability = strdup( p_module->psz_capability );
- p_module->psz_shortname = strdup( p_module->psz_shortname );
- p_module->psz_longname = strdup( p_module->psz_longname );
- if( p_module->psz_program != NULL )
- {
- p_module->psz_program = strdup( p_module->psz_program );
- }
- for( i_submodule = 0; i_submodule < p_module->i_children; i_submodule++ )
- {
- DupModule( (module_t*)p_module->pp_children[ i_submodule ] );
- }
- }
- /*****************************************************************************
- * UndupModule: free a duplicated module.
- *****************************************************************************
- * This function frees the allocations done in DupModule().
- *****************************************************************************/
- static void UndupModule( module_t *p_module )
- {
- char **pp_shortcut;
- int i_submodule;
- for( i_submodule = 0; i_submodule < p_module->i_children; i_submodule++ )
- {
- UndupModule( (module_t*)p_module->pp_children[ i_submodule ] );
- }
- for( pp_shortcut = p_module->pp_shortcuts ; *pp_shortcut ; pp_shortcut++ )
- {
- free( *pp_shortcut );
- }
- free( p_module->psz_object_name );
- free( p_module->psz_capability );
- free( p_module->psz_shortname );
- free( p_module->psz_longname );
- if( p_module->psz_program != NULL )
- {
- free( p_module->psz_program );
- }
- }
- #endif /* HAVE_DYNAMIC_PLUGINS */
- /*****************************************************************************
- * AllocateBuiltinModule: initialize a builtin module.
- *****************************************************************************
- * This function registers a builtin module and allocates a structure
- * for its information data. The module can then be handled by module_Need
- * and module_Unneed. It can be removed by DeleteModule.
- *****************************************************************************/
- static int AllocateBuiltinModule( vlc_object_t * p_this,
- int ( *pf_entry ) ( module_t * ) )
- {
- module_t * p_module;
- /* Now that we have successfully loaded the module, we can
- * allocate a structure for it */
- p_module = vlc_object_create( p_this, VLC_OBJECT_MODULE );
- if( p_module == NULL )
- {
- msg_Err( p_this, "out of memory" );
- return -1;
- }
- /* Initialize the module : fill p_module->psz_object_name, etc. */
- if( pf_entry( p_module ) != 0 )
- {
- /* With a well-written module we shouldn't have to print an
- * additional error message here, but just make sure. */
- msg_Err( p_this, "failed calling entry point in builtin module" );
- vlc_object_destroy( p_module );
- return -1;
- }
- /* Everything worked fine ! The module is ready to be added to the list. */
- p_module->b_builtin = VLC_TRUE;
- /* msg_Dbg( p_this, "builtin "%s", %s",
- p_module->psz_object_name, p_module->psz_longname ); */
- vlc_object_attach( p_module, p_this->p_libvlc->p_module_bank );
- return 0;
- }
- /*****************************************************************************
- * DeleteModule: delete a module and its structure.
- *****************************************************************************
- * This function can only be called if the module isn't being used.
- *****************************************************************************/
- static int DeleteModule( module_t * p_module )
- {
- vlc_object_detach( p_module );
- /* We free the structures that we strdup()ed in Allocate*Module(). */
- #ifdef HAVE_DYNAMIC_PLUGINS
- if( !p_module->b_builtin )
- {
- if( p_module->b_loaded && p_module->b_unloadable )
- {
- CloseModule( p_module->handle );
- }
- UndupModule( p_module );
- free( p_module->psz_filename );
- }
- #endif
- /* Free and detach the object's children */
- while( p_module->i_children )
- {
- vlc_object_t *p_this = p_module->pp_children[0];
- vlc_object_detach( p_this );
- vlc_object_destroy( p_this );
- }
- config_Free( p_module );
- vlc_object_destroy( p_module );
- return 0;
- }
- #ifdef HAVE_DYNAMIC_PLUGINS
- /*****************************************************************************
- * CallEntry: call an entry point.
- *****************************************************************************
- * This function calls a symbol given its name and a module structure. The
- * symbol MUST refer to a function returning int and taking a module_t* as
- * an argument.
- *****************************************************************************/
- static int CallEntry( module_t * p_module )
- {
- static char *psz_name = "vlc_entry" MODULE_SUFFIX;
- int (* pf_symbol) ( module_t * p_module );
- /* Try to resolve the symbol */
- pf_symbol = (int (*)(module_t *)) GetSymbol( p_module->handle, psz_name );
- if( pf_symbol == NULL )
- {
- #if defined(HAVE_DL_DYLD) || defined(HAVE_DL_BEOS)
- msg_Warn( p_module, "cannot find symbol "%s" in file `%s'",
- psz_name, p_module->psz_filename );
- #elif defined(HAVE_DL_WINDOWS)
- char *psz_error = GetWindowsError();
- msg_Warn( p_module, "cannot find symbol "%s" in file `%s' (%s)",
- psz_name, p_module->psz_filename, psz_error );
- free( psz_error );
- #elif defined(HAVE_DL_DLOPEN)
- msg_Warn( p_module, "cannot find symbol "%s" in file `%s' (%s)",
- psz_name, p_module->psz_filename, dlerror() );
- #elif defined(HAVE_DL_SHL_LOAD)
- msg_Warn( p_module, "cannot find symbol "%s" in file `%s' (%s)",
- psz_name, p_module->psz_filename, strerror(errno) );
- #else
- # error "Something is wrong in modules.c"
- #endif
- return -1;
- }
- /* We can now try to call the symbol */
- if( pf_symbol( p_module ) != 0 )
- {
- /* With a well-written module we shouldn't have to print an
- * additional error message here, but just make sure. */
- msg_Err( p_module, "failed calling symbol "%s" in file `%s'",
- psz_name, p_module->psz_filename );
- return -1;
- }
- /* Everything worked fine, we can return */
- return 0;
- }
- /*****************************************************************************
- * LoadModule: loads a dynamic library
- *****************************************************************************
- * This function loads a dynamically linked library using a system dependant
- * method. Will return 0 on success as well as the module handle.
- *****************************************************************************/
- static int LoadModule( vlc_object_t *p_this, char *psz_file,
- module_handle_t *p_handle )
- {
- module_handle_t handle;
- #if defined(HAVE_DL_DYLD)
- NSObjectFileImage image;
- NSObjectFileImageReturnCode ret;
- ret = NSCreateObjectFileImageFromFile( psz_file, &image );
- if( ret != NSObjectFileImageSuccess )
- {
- msg_Warn( p_this, "cannot create image from `%s'", psz_file );
- return -1;
- }
- /* Open the dynamic module */
- handle = NSLinkModule( image, psz_file,
- NSLINKMODULE_OPTION_RETURN_ON_ERROR );
- if( !handle )
- {
- NSLinkEditErrors errors;
- const char *psz_file, *psz_err;
- int i_errnum;
- NSLinkEditError( &errors, &i_errnum, &psz_file, &psz_err );
- msg_Warn( p_this, "cannot link module `%s' (%s)", psz_file, psz_err );
- NSDestroyObjectFileImage( image );
- return -1;
- }
- /* Destroy our image, we won't need it */
- NSDestroyObjectFileImage( image );
- #elif defined(HAVE_DL_BEOS)
- handle = load_add_on( psz_file );
- if( handle < 0 )
- {
- msg_Warn( p_this, "cannot load module `%s'", psz_file );
- return -1;
- }
- #elif defined(HAVE_DL_WINDOWS)
- #ifdef UNDER_CE
- {
- wchar_t psz_wfile[MAX_PATH];
- MultiByteToWideChar( CP_ACP, 0, psz_file, -1, psz_wfile, MAX_PATH );
- handle = LoadLibrary( psz_wfile );
- }
- #else
- handle = LoadLibrary( psz_file );
- #endif
- if( handle == NULL )
- {
- char *psz_err = GetWindowsError();
- msg_Warn( p_this, "cannot load module `%s' (%s)", psz_file, psz_err );
- free( psz_err );
- return -1;
- }
- #elif defined(HAVE_DL_DLOPEN) && defined(RTLD_NOW)
- /* static is OK, we are called atomically */
- static vlc_bool_t b_kde = VLC_FALSE;
- # if defined(SYS_LINUX)
- /* XXX HACK #1 - we should NOT open modules with RTLD_GLOBAL, or we
- * are going to get namespace collisions when two modules have common
- * public symbols, but ALSA is being a pest here. */
- if( strstr( psz_file, "alsa_plugin" ) )
- {
- handle = dlopen( psz_file, RTLD_NOW | RTLD_GLOBAL );
- if( handle == NULL )
- {
- msg_Warn( p_this, "cannot load module `%s' (%s)",
- psz_file, dlerror() );
- return -1;
- }
- }
- # endif
- /* XXX HACK #2 - the ugly KDE workaround. It seems that libkdewhatever
- * causes dlopen() to segfault if libstdc++ is not loaded in the caller,
- * so we just load libstdc++. Bwahahaha! ph34r! -- Sam. */
- /* Update: FYI, this is Debian bug #180505, and seems to be fixed. */
- if( !b_kde && !strstr( psz_file, "kde" ) )
- {
- dlopen( "libstdc++.so.6", RTLD_NOW )
- || dlopen( "libstdc++.so.5", RTLD_NOW )
- || dlopen( "libstdc++.so.4", RTLD_NOW )
- || dlopen( "libstdc++.so.3", RTLD_NOW );
- b_kde = VLC_TRUE;
- }
- handle = dlopen( psz_file, RTLD_NOW );
- if( handle == NULL )
- {
- msg_Warn( p_this, "cannot load module `%s' (%s)",
- psz_file, dlerror() );
- return -1;
- }
- #elif defined(HAVE_DL_DLOPEN)
- # if defined(DL_LAZY)
- handle = dlopen( psz_file, DL_LAZY );
- # else
- handle = dlopen( psz_file, 0 );
- # endif
- if( handle == NULL )
- {
- msg_Warn( p_this, "cannot load module `%s' (%s)",
- psz_file, dlerror() );
- return -1;
- }
- #elif defined(HAVE_DL_SHL_LOAD)
- handle = shl_load( psz_file, BIND_IMMEDIATE | BIND_NONFATAL, NULL );
- if( handle == NULL )
- {
- msg_Warn( p_this, "cannot load module `%s' (%s)",
- psz_file, strerror(errno) );
- return -1;
- }
- #else
- # error "Something is wrong in modules.c"
- #endif
- *p_handle = handle;
- return 0;
- }
- /*****************************************************************************
- * CloseModule: unload a dynamic library
- *****************************************************************************
- * This function unloads a previously opened dynamically linked library
- * using a system dependant method. No return value is taken in consideration,
- * since some libraries sometimes refuse to close properly.
- *****************************************************************************/
- static void CloseModule( module_handle_t handle )
- {
- #if defined(HAVE_DL_DYLD)
- NSUnLinkModule( handle, FALSE );
- #elif defined(HAVE_DL_BEOS)
- unload_add_on( handle );
- #elif defined(HAVE_DL_WINDOWS)
- FreeLibrary( handle );
- #elif defined(HAVE_DL_DLOPEN)
- dlclose( handle );
- #elif defined(HAVE_DL_SHL_LOAD)
- shl_unload( handle );
- #endif
- return;
- }
- /*****************************************************************************
- * GetSymbol: get a symbol from a dynamic library
- *****************************************************************************
- * This function queries a loaded library for a symbol specified in a
- * string, and returns a pointer to it. We don't check for dlerror() or
- * similar functions, since we want a non-NULL symbol anyway.
- *****************************************************************************/
- static void * _module_getsymbol( module_handle_t, const char * );
- static void * GetSymbol( module_handle_t handle, const char * psz_function )
- {
- void * p_symbol = _module_getsymbol( handle, psz_function );
- /* MacOS X dl library expects symbols to begin with "_". So do
- * some other operating systems. That's really lame, but hey, what
- * can we do ? */
- if( p_symbol == NULL )
- {
- char *psz_call = malloc( strlen( psz_function ) + 2 );
- strcpy( psz_call + 1, psz_function );
- psz_call[ 0 ] = '_';
- p_symbol = _module_getsymbol( handle, psz_call );
- free( psz_call );
- }
- return p_symbol;
- }
- static void * _module_getsymbol( module_handle_t handle,
- const char * psz_function )
- {
- #if defined(HAVE_DL_DYLD)
- NSSymbol sym = NSLookupSymbolInModule( handle, psz_function );
- return NSAddressOfSymbol( sym );
- #elif defined(HAVE_DL_BEOS)
- void * p_symbol;
- if( B_OK == get_image_symbol( handle, psz_function,
- B_SYMBOL_TYPE_TEXT, &p_symbol ) )
- {
- return p_symbol;
- }
- else
- {
- return NULL;
- }
- #elif defined(HAVE_DL_WINDOWS) && defined(UNDER_CE)
- wchar_t psz_real[256];
- MultiByteToWideChar( CP_ACP, 0, psz_function, -1, psz_real, 256 );
- return (void *)GetProcAddress( handle, psz_real );
- #elif defined(HAVE_DL_WINDOWS) && defined(WIN32)
- return (void *)GetProcAddress( handle, (char *)psz_function );
- #elif defined(HAVE_DL_DLOPEN)
- return dlsym( handle, psz_function );
- #elif defined(HAVE_DL_SHL_LOAD)
- void *p_sym;
- shl_findsym( &handle, psz_function, TYPE_UNDEFINED, &p_sym );
- return p_sym;
- #endif
- }
- #if defined(HAVE_DL_WINDOWS)
- static char * GetWindowsError( void )
- {
- #if defined(UNDER_CE)
- wchar_t psz_tmp[256];
- char * psz_buffer = malloc( 256 );
- #else
- char * psz_tmp = malloc( 256 );
- #endif
- int i = 0, i_error = GetLastError();
- FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL, i_error, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
- (LPTSTR) psz_tmp, 256, NULL );
- /* Go to the end of the string */
- #if defined(UNDER_CE)
- while( psz_tmp[i] && psz_tmp[i] != L'r' && psz_tmp[i] != L'n' )
- #else
- while( psz_tmp[i] && psz_tmp[i] != 'r' && psz_tmp[i] != 'n' )
- #endif
- {
- i++;
- }
- if( psz_tmp[i] )
- {
- #if defined(UNDER_CE)
- swprintf( psz_tmp + i, L" (error %i)", i_error );
- psz_tmp[ 255 ] = L' ';
- #else
- snprintf( psz_tmp + i, 256 - i, " (error %i)", i_error );
- psz_tmp[ 255 ] = ' ';
- #endif
- }
- #if defined(UNDER_CE)
- WideCharToMultiByte( CP_ACP, WC_DEFAULTCHAR, psz_tmp, -1,
- psz_buffer, 256, NULL, NULL );
- return psz_buffer;
- #else
- return psz_tmp;
- #endif
- }
- #endif /* HAVE_DL_WINDOWS */
- /*****************************************************************************
- * LoadPluginsCache: loads the plugins cache file
- *****************************************************************************
- * This function will load the plugin cache if present and valid. This cache
- * will in turn be queried by AllocateAllPlugins() to see if it needs to
- * actually load the dynamically loadable module.
- * This allows us to only fully load plugins when they are actually used.
- *****************************************************************************/
- static void CacheLoad( vlc_object_t *p_this )
- {
- char *psz_filename, *psz_homedir;
- FILE *file;
- int i, j, i_size, i_read;
- char p_cachestring[sizeof(PLUGINSCACHE_DIR COPYRIGHT_MESSAGE)];
- char p_cachelang[6], p_lang[6];
- int i_cache;
- module_cache_t **pp_cache = 0;
- int32_t i_file_size, i_marker;
- psz_homedir = p_this->p_vlc->psz_homedir;
- if( !psz_homedir )
- {
- msg_Err( p_this, "psz_homedir is null" );
- return;
- }
- i_size = asprintf( &psz_filename, "%s/%s/%s/%s", psz_homedir, CONFIG_DIR,
- PLUGINSCACHE_DIR, CacheName() );
- if( i_size <= 0 )
- {
- msg_Err( p_this, "out of memory" );
- return;
- }
- if( p_this->p_libvlc->p_module_bank->b_cache_delete )
- {
- #if !defined( UNDER_CE )
- unlink( psz_filename );
- #else
- wchar_t psz_wf[MAX_PATH];
- MultiByteToWideChar( CP_ACP, 0, psz_filename, -1, psz_wf, MAX_PATH );
- DeleteFile( psz_wf );
- #endif
- msg_Dbg( p_this, "removing plugins cache file %s", psz_filename );
- return;
- }
- msg_Dbg( p_this, "loading plugins cache file %s", psz_filename );
- file = fopen( psz_filename, "rb" );
- if( !file )
- {
- msg_Warn( p_this, "could not open plugins cache file %s for reading",
- psz_filename );
- free( psz_filename );
- return;
- }
- free( psz_filename );
- /* Check the file size */
- i_read = fread( &i_file_size, sizeof(char), sizeof(i_file_size), file );
- if( i_read != sizeof(i_file_size) )
- {
- msg_Warn( p_this, "This doesn't look like a valid plugins cache "
- "(too short)" );
- fclose( file );
- return;
- }
- fseek( file, 0, SEEK_END );
- if( ftell( file ) != i_file_size )
- {
- msg_Warn( p_this, "This doesn't look like a valid plugins cache "
- "(corrupted size)" );
- fclose( file );
- return;
- }
- fseek( file, sizeof(i_file_size), SEEK_SET );
- /* Check the file is a plugins cache */
- i_size = sizeof(PLUGINSCACHE_DIR COPYRIGHT_MESSAGE) - 1;
- i_read = fread( p_cachestring, sizeof(char), i_size, file );
- if( i_read != i_size ||
- memcmp( p_cachestring, PLUGINSCACHE_DIR COPYRIGHT_MESSAGE, i_size ) )
- {
- msg_Warn( p_this, "This doesn't look like a valid plugins cache" );
- fclose( file );
- return;
- }
- /* Check the language hasn't changed */
- sprintf( p_lang, "%5.5s", _("C") ); i_size = 5;
- i_read = fread( p_cachelang, sizeof(char), i_size, file );
- if( i_read != i_size || memcmp( p_cachelang, p_lang, i_size ) )
- {
- msg_Warn( p_this, "This doesn't look like a valid plugins cache "
- "(language changed)" );
- fclose( file );
- return;
- }
- /* Check header marker */
- i_read = fread( &i_marker, sizeof(char), sizeof(i_marker), file );
- if( i_read != sizeof(i_marker) ||
- i_marker != ftell( file ) - (int)sizeof(i_marker) )
- {
- msg_Warn( p_this, "This doesn't look like a valid plugins cache "
- "(corrupted header)" );
- fclose( file );
- return;
- }
- p_this->p_libvlc->p_module_bank->i_loaded_cache = 0;
- fread( &i_cache, sizeof(char), sizeof(i_cache), file );
- pp_cache = p_this->p_libvlc->p_module_bank->pp_loaded_cache =
- malloc( i_cache * sizeof(void *) );
- #define LOAD_IMMEDIATE(a)
- if( fread( &a, sizeof(char), sizeof(a), file ) != sizeof(a) ) goto error
- #define LOAD_STRING(a)
- { if( fread( &i_size, sizeof(char), sizeof(i_size), file )
- != sizeof(i_size) ) goto error;
- if( i_size ) {
- a = malloc( i_size );
- if( fread( a, sizeof(char), i_size, file ) != (size_t)i_size )
- goto error;
- } else a = 0;
- } while(0)
- for( i = 0; i < i_cache; i++ )
- {
- int16_t i_size;
- int i_submodules;
- pp_cache[i] = malloc( sizeof(module_cache_t) );
- p_this->p_libvlc->p_module_bank->i_loaded_cache++;
- /* Load common info */
- LOAD_STRING( pp_cache[i]->psz_file );
- LOAD_IMMEDIATE( pp_cache[i]->i_time );
- LOAD_IMMEDIATE( pp_cache[i]->i_size );
- LOAD_IMMEDIATE( pp_cache[i]->b_junk );
- if( pp_cache[i]->b_junk ) continue;
- pp_cache[i]->p_module = vlc_object_create( p_this, VLC_OBJECT_MODULE );
- /* Load additional infos */
- LOAD_STRING( pp_cache[i]->p_module->psz_object_name );
- LOAD_STRING( pp_cache[i]->p_module->psz_shortname );
- LOAD_STRING( pp_cache[i]->p_module->psz_longname );
- LOAD_STRING( pp_cache[i]->p_module->psz_program );
- for( j = 0; j < MODULE_SHORTCUT_MAX; j++ )
- {
- LOAD_STRING( pp_cache[i]->p_module->pp_shortcuts[j] ); // FIX
- }
- LOAD_STRING( pp_cache[i]->p_module->psz_capability );
- LOAD_IMMEDIATE( pp_cache[i]->p_module->i_score );
- LOAD_IMMEDIATE( pp_cache[i]->p_module->i_cpu );
- LOAD_IMMEDIATE( pp_cache[i]->p_module->b_unloadable );
- LOAD_IMMEDIATE( pp_cache[i]->p_module->b_reentrant );
- LOAD_IMMEDIATE( pp_cache[i]->p_module->b_submodule );
- /* Config stuff */
- if( CacheLoadConfig( pp_cache[i]->p_module, file ) != VLC_SUCCESS )
- goto error;
- LOAD_STRING( pp_cache[i]->p_module->psz_filename );
- LOAD_IMMEDIATE( i_submodules );
- while( i_submodules-- )
- {
- module_t *p_module = vlc_object_create( p_this, VLC_OBJECT_MODULE);
- vlc_object_attach( p_module, pp_cache[i]->p_module );
- p_module->b_submodule = VLC_TRUE;
- LOAD_STRING( p_module->psz_object_name );
- LOAD_STRING( p_module->psz_shortname );
- LOAD_STRING( p_module->psz_longname );
- LOAD_STRING( p_module->psz_program );
- for( j = 0; j < MODULE_SHORTCUT_MAX; j++ )
- {
- LOAD_STRING( p_module->pp_shortcuts[j] ); // FIX
- }
- LOAD_STRING( p_module->psz_capability );
- LOAD_IMMEDIATE( p_module->i_score );
- LOAD_IMMEDIATE( p_module->i_cpu );
- LOAD_IMMEDIATE( p_module->b_unloadable );
- LOAD_IMMEDIATE( p_module->b_reentrant );
- }
- }
- fclose( file );
- return;
- error:
- msg_Warn( p_this, "plugins cache not loaded (corrupted)" );
- /* TODO: cleanup */
- p_this->p_libvlc->p_module_bank->i_loaded_cache = 0;
- fclose( file );
- return;
- }
- int CacheLoadConfig( module_t *p_module, FILE *file )
- {
- int i, j, i_lines;
- int16_t i_size;
- /* Calculate the structure length */
- LOAD_IMMEDIATE( p_module->i_config_items );
- LOAD_IMMEDIATE( p_module->i_bool_items );
- LOAD_IMMEDIATE( i_lines );
- /* Allocate memory */
- p_module->p_config =
- (module_config_t *)malloc( sizeof(module_config_t) * (i_lines + 1));
- if( p_module->p_config == NULL )
- {
- msg_Err( p_module, "config error: can't duplicate p_config" );
- return VLC_ENOMEM;
- }
- /* Do the duplication job */
- for( i = 0; i < i_lines ; i++ )
- {
- LOAD_IMMEDIATE( p_module->p_config[i] );
- LOAD_STRING( p_module->p_config[i].psz_type );
- LOAD_STRING( p_module->p_config[i].psz_name );
- LOAD_STRING( p_module->p_config[i].psz_text );
- LOAD_STRING( p_module->p_config[i].psz_longtext );
- LOAD_STRING( p_module->p_config[i].psz_value_orig );
- p_module->p_config[i].psz_value =
- p_module->p_config[i].psz_value_orig ?
- strdup( p_module->p_config[i].psz_value_orig ) : 0;
- p_module->p_config[i].i_value = p_module->p_config[i].i_value_orig;
- p_module->p_config[i].f_value = p_module->p_config[i].f_value_orig;
- p_module->p_config[i].p_lock = &p_module->object_lock;
- if( p_module->p_config[i].i_list )
- {
- if( p_module->p_config[i].ppsz_list )
- {
- p_module->p_config[i].ppsz_list =
- malloc( (p_module->p_config[i].i_list+1) * sizeof(char *));
- if( p_module->p_config[i].ppsz_list )
- {
- for( j = 0; j < p_module->p_config[i].i_list; j++ )
- LOAD_STRING( p_module->p_config[i].ppsz_list[j] );
- p_module->p_config[i].ppsz_list[j] = NULL;
- }
- }
- if( p_module->p_config[i].ppsz_list_text )
- {
- p_module->p_config[i].ppsz_list_text =
- malloc( (p_module->p_config[i].i_list+1) * sizeof(char *));
- if( p_module->p_config[i].ppsz_list_text )
- {
- for( j = 0; j < p_module->p_config[i].i_list; j++ )
- LOAD_STRING( p_module->p_config[i].ppsz_list_text[j] );
- p_module->p_config[i].ppsz_list_text[j] = NULL;
- }
- }
- if( p_module->p_config[i].pi_list )
- {
- p_module->p_config[i].pi_list =
- malloc( (p_module->p_config[i].i_list + 1) * sizeof(int) );
- if( p_module->p_config[i].pi_list )
- {
- for( j = 0; j < p_module->p_config[i].i_list; j++ )
- LOAD_IMMEDIATE( p_module->p_config[i].pi_list[j] );
- }
- }
- }
- if( p_module->p_config[i].i_action )
- {
- p_module->p_config[i].ppf_action =
- malloc( p_module->p_config[i].i_action * sizeof(void *) );
- p_module->p_config[i].ppsz_action_text =
- malloc( p_module->p_config[i].i_action * sizeof(char *) );
- for( j = 0; j < p_module->p_config[i].i_action; j++ )
- {
- p_module->p_config[i].ppf_action[j] = 0;
- LOAD_STRING( p_module->p_config[i].ppsz_action_text[j] );
- }
- }
- LOAD_IMMEDIATE( p_module->p_config[i].pf_callback );
- }
- p_module->p_config[i].i_type = CONFIG_HINT_END;
- return VLC_SUCCESS;
- error:
- return VLC_EGENERIC;
- }
- /*****************************************************************************
- * SavePluginsCache: saves the plugins cache to a file
- *****************************************************************************/
- static void CacheSave( vlc_object_t *p_this )
- {
- static char const psz_tag[] =
- "Signature: 8a477f597d28d172789f06886806bc55rn"
- "# This file is a cache directory tag created by VLC.rn"
- "# For information about cache directory tags, see:rn"
- "# http://www.brynosaurus.com/cachedir/rn";
- char *psz_filename, *psz_homedir;
- FILE *file;
- int i, j, i_cache;
- module_cache_t **pp_cache;
- int32_t i_file_size = 0;
- psz_homedir = p_this->p_vlc->psz_homedir;
- if( !psz_homedir )
- {
- msg_Err( p_this, "psz_homedir is null" );
- return;
- }
- psz_filename =
- (char *)malloc( sizeof("/" CONFIG_DIR "/" PLUGINSCACHE_DIR "/" ) +
- strlen(psz_homedir) + strlen(CacheName()) );
- if( !psz_filename )
- {
- msg_Err( p_this, "out of memory" );
- return;
- }
- sprintf( psz_filename, "%s/%s", psz_homedir, CONFIG_DIR );
- config_CreateDir( p_this, psz_filename );
- strcat( psz_filename, "/" PLUGINSCACHE_DIR );
- config_CreateDir( p_this, psz_filename );
- strcat( psz_filename, "/CACHEDIR.TAG" );
- file = fopen( psz_filename, "wb" );
- if( file )
- {
- fwrite( psz_tag, 1, strlen(psz_tag), file );
- fclose( file );
- }
- sprintf( psz_filename, "%s/%s/%s/%s", psz_homedir, CONFIG_DIR,
- PLUGINSCACHE_DIR, CacheName() );
- msg_Dbg( p_this, "saving plugins cache file %s", psz_filename );
- file = fopen( psz_filename, "wb" );
- if( !file )
- {
- msg_Warn( p_this, "could not open plugins cache file %s for writing",
- psz_filename );
- free( psz_filename );
- return;
- }
- free( psz_filename );
- /* Empty space for file size */
- fwrite( &i_file_size, sizeof(char), sizeof(i_file_size), file );
- /* Contains version number */
- fprintf( file, "%s", PLUGINSCACHE_DIR COPYRIGHT_MESSAGE );
- /* Language */
- fprintf( file, "%5.5s", _("C") );
- /* Header marker */
- i_file_size = ftell( file );
- fwrite( &i_file_size, sizeof(char), sizeof(i_file_size), file );
- i_cache = p_this->p_libvlc->p_module_bank->i_cache;
- pp_cache = p_this->p_libvlc->p_module_bank->pp_cache;
- fwrite( &i_cache, sizeof(char), sizeof(i_cache), file );
- #define SAVE_IMMEDIATE(a)
- fwrite( &a, sizeof(char), sizeof(a), file )
- #define SAVE_STRING(a)
- { i_size = a ? strlen( a ) + 1 : 0;
- fwrite( &i_size, sizeof(char), sizeof(i_size), file );
- if( a ) fwrite( a, sizeof(char), i_size, file );
- } while(0)
- for( i = 0; i < i_cache; i++ )
- {
- int16_t i_size;
- int32_t i_submodule;
- /* Save common info */
- SAVE_STRING( pp_cache[i]->psz_file );
- SAVE_IMMEDIATE( pp_cache[i]->i_time );
- SAVE_IMMEDIATE( pp_cache[i]->i_size );
- SAVE_IMMEDIATE( pp_cache[i]->b_junk );
- if( pp_cache[i]->b_junk ) continue;
- /* Save additional infos */
- SAVE_STRING( pp_cache[i]->p_module->psz_object_name );
- SAVE_STRING( pp_cache[i]->p_module->psz_shortname );
- SAVE_STRING( pp_cache[i]->p_module->psz_longname );
- SAVE_STRING( pp_cache[i]->p_module->psz_program );
- for( j = 0; j < MODULE_SHORTCUT_MAX; j++ )
- {
- SAVE_STRING( pp_cache[i]->p_module->pp_shortcuts[j] ); // FIX
- }
- SAVE_STRING( pp_cache[i]->p_module->psz_capability );
- SAVE_IMMEDIATE( pp_cache[i]->p_module->i_score );
- SAVE_IMMEDIATE( pp_cache[i]->p_module->i_cpu );
- SAVE_IMMEDIATE( pp_cache[i]->p_module->b_unloadable );
- SAVE_IMMEDIATE( pp_cache[i]->p_module->b_reentrant );
- SAVE_IMMEDIATE( pp_cache[i]->p_module->b_submodule );
- /* Config stuff */
- CacheSaveConfig( pp_cache[i]->p_module, file );
- SAVE_STRING( pp_cache[i]->p_module->psz_filename );
- i_submodule = pp_cache[i]->p_module->i_children;
- SAVE_IMMEDIATE( i_submodule );
- for( i_submodule = 0; i_submodule < pp_cache[i]->p_module->i_children;
- i_submodule++ )
- {
- module_t *p_module =
- (module_t *)pp_cache[i]->p_module->pp_children[i_submodule];
- SAVE_STRING( p_module->psz_object_name );
- SAVE_STRING( p_module->psz_shortname );
- SAVE_STRING( p_module->psz_longname );
- SAVE_STRING( p_module->psz_program );
- for( j = 0; j < MODULE_SHORTCUT_MAX; j++ )
- {
- SAVE_STRING( p_module->pp_shortcuts[j] ); // FIX
- }
- SAVE_STRING( p_module->psz_capability );
- SAVE_IMMEDIATE( p_module->i_score );
- SAVE_IMMEDIATE( p_module->i_cpu );
- SAVE_IMMEDIATE( p_module->b_unloadable );
- SAVE_IMMEDIATE( p_module->b_reentrant );
- }
- }
- /* Fill-up file size */
- i_file_size = ftell( file );
- fseek( file, 0, SEEK_SET );
- fwrite( &i_file_size, sizeof(char), sizeof(i_file_size), file );
- fclose( file );
- return;
- }
- void CacheSaveConfig( module_t *p_module, FILE *file )
- {
- int i, j, i_lines = 0;
- module_config_t *p_item;
- int16_t i_size;
- SAVE_IMMEDIATE( p_module->i_config_items );
- SAVE_IMMEDIATE( p_module->i_bool_items );
- for( p_item = p_module->p_config; p_item->i_type != CONFIG_HINT_END;
- p_item++ ) i_lines++;
- SAVE_IMMEDIATE( i_lines );
- for( i = 0; i < i_lines ; i++ )
- {
- SAVE_IMMEDIATE( p_module->p_config[i] );
- SAVE_STRING( p_module->p_config[i].psz_type );
- SAVE_STRING( p_module->p_config[i].psz_name );
- SAVE_STRING( p_module->p_config[i].psz_text );
- SAVE_STRING( p_module->p_config[i].psz_longtext );
- SAVE_STRING( p_module->p_config[i].psz_value_orig );
- if( p_module->p_config[i].i_list )
- {
- if( p_module->p_config[i].ppsz_list )
- {
- for( j = 0; j < p_module->p_config[i].i_list; j++ )
- SAVE_STRING( p_module->p_config[i].ppsz_list[j] );
- }
- if( p_module->p_config[i].ppsz_list_text )
- {
- for( j = 0; j < p_module->p_config[i].i_list; j++ )
- SAVE_STRING( p_module->p_config[i].ppsz_list_text[j] );
- }
- if( p_module->p_config[i].pi_list )
- {
- for( j = 0; j < p_module->p_config[i].i_list; j++ )
- SAVE_IMMEDIATE( p_module->p_config[i].pi_list[j] );
- }
- }
- for( j = 0; j < p_module->p_config[i].i_action; j++ )
- SAVE_STRING( p_module->p_config[i].ppsz_action_text[j] );
- SAVE_IMMEDIATE( p_module->p_config[i].pf_callback );
- }
- }
- /*****************************************************************************
- * CacheName: Return the cache file name for this platform.
- *****************************************************************************/
- static char *CacheName( void )
- {
- static char psz_cachename[32];
- static vlc_bool_t b_initialised = VLC_FALSE;
- if( !b_initialised )
- {
- /* Code int size, pointer size and endianness in the filename */
- int32_t x = 0xbe00001e;
- sprintf( psz_cachename, "plugins-%.2x%.2x%.2x.dat", sizeof(int),
- sizeof(void *), (unsigned int)((unsigned char *)&x)[0] );
- b_initialised = VLC_TRUE;
- }
- return psz_cachename;
- }
- /*****************************************************************************
- * CacheMerge: Merge a cache module descriptor with a full module descriptor.
- *****************************************************************************/
- static void CacheMerge( vlc_object_t *p_this, module_t *p_cache,
- module_t *p_module )
- {
- int i_submodule;
- p_cache->pf_activate = p_module->pf_activate;
- p_cache->pf_deactivate = p_module->pf_deactivate;
- p_cache->p_symbols = p_module->p_symbols;
- p_cache->handle = p_module->handle;
- for( i_submodule = 0; i_submodule < p_module->i_children; i_submodule++ )
- {
- module_t *p_child = (module_t*)p_module->pp_children[i_submodule];
- module_t *p_cchild = (module_t*)p_cache->pp_children[i_submodule];
- p_cchild->pf_activate = p_child->pf_activate;
- p_cchild->pf_deactivate = p_child->pf_deactivate;
- p_cchild->p_symbols = p_child->p_symbols;
- }
- p_cache->b_loaded = VLC_TRUE;
- p_module->b_loaded = VLC_FALSE;
- }
- /*****************************************************************************
- * FindPluginCache: finds the cache entry corresponding to a file
- *****************************************************************************/
- static module_cache_t *CacheFind( vlc_object_t *p_this, char *psz_file,
- int64_t i_time, int64_t i_size )
- {
- module_cache_t **pp_cache;
- int i_cache, i;
- pp_cache = p_this->p_libvlc->p_module_bank->pp_loaded_cache;
- i_cache = p_this->p_libvlc->p_module_bank->i_loaded_cache;
- for( i = 0; i < i_cache; i++ )
- {
- if( !strcmp( pp_cache[i]->psz_file, psz_file ) &&
- pp_cache[i]->i_time == i_time &&
- pp_cache[i]->i_size == i_size ) return pp_cache[i];
- }
- return NULL;
- }
- #endif /* HAVE_DYNAMIC_PLUGINS */