/*****************************************************************************
* modules.c : Builtin and plugin modules management functions
*****************************************************************************
- * Copyright (C) 2001 VideoLAN
- * $Id: modules.c,v 1.117 2003/03/25 15:38:14 gbazin Exp $
+ * Copyright (C) 2001-2004 VideoLAN
+ * $Id: modules.c,v 1.144 2004/01/25 17:16:06 zorglub Exp $
*
- * Authors: Samuel Hocevar <sam@zoy.org>
+ * Authors: Sam Hocevar <sam@zoy.org>
* Ethan C. Baldridge <BaldridgeE@cadmus.com>
* Hans-Peter Jansen <hpj@urpla.net>
*
# include <unistd.h>
#endif
-#if defined(HAVE_DLFCN_H) /* Linux, BSD, Hurd */
-# include <dlfcn.h> /* dlopen(), dlsym(), dlclose() */
-# define HAVE_DYNAMIC_PLUGINS
-#elif defined(HAVE_IMAGE_H) /* BeOS */
-# include <image.h>
-# define HAVE_DYNAMIC_PLUGINS
-#elif defined(UNDER_CE)
-# define HAVE_DYNAMIC_PLUGINS
-#elif defined(WIN32)
-# define HAVE_DYNAMIC_PLUGINS
+#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 "error.h"
-#include "netutils.h"
+#include "vlc_error.h"
-#include "interface.h"
+#include "vlc_interface.h"
#include "vlc_playlist.h"
#include "intf_eject.h"
#include "input_ext-intf.h"
#include "input_ext-dec.h"
#include "input_ext-plugins.h"
+#include "ninput.h"
-#include "video.h"
+#include "vlc_video.h"
#include "video_output.h"
+#include "vout_synchro.h"
#include "audio_output.h"
#include "aout_internal.h"
#include "stream_output.h"
+#include "osd.h"
#include "iso_lang.h"
+#include "charset.h"
+
+#include "vlc_block.h"
#if defined( UNDER_CE )
# define MYCHAR wchar_t
#else
# include "modules_builtin.h"
#endif
+#include "network.h"
/*****************************************************************************
* Local prototypes
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 void DupModule ( module_t * );
+static void UndupModule ( module_t * );
+static int CallEntry ( module_t * );
+static void CloseModule ( module_handle_t );
+static void * GetSymbol ( module_handle_t, const char * );
+#if defined(HAVE_DL_WINDOWS)
+static char * GetWindowsError ( void );
+#endif
#endif
/*****************************************************************************
/* Deal with variables */
if( psz_name && psz_name[0] == '$' )
{
- psz_var = config_GetPsz( p_this, psz_name + 1 );
+ 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;
}
for( i_dummy = 0; p_module->pp_shortcuts[i_dummy]; i_dummy++ )
{
- if( !strcmp( psz_name,
- p_module->pp_shortcuts[i_dummy] ) )
+ if( !strcasecmp( psz_name,
+ p_module->pp_shortcuts[i_dummy] ) )
{
/* Found it */
b_trash = VLC_FALSE;
}
/* Special case: test if we requested a particular intf plugin */
- if( p_module->psz_program
+ if( !i_shortcuts && p_module->psz_program
&& !strcmp( p_module->psz_program,
p_this->p_vlc->psz_object_name ) )
{
char ** ppsz_path = path;
char * psz_fullpath;
-#if defined( SYS_BEOS ) || defined( SYS_DARWIN ) \
- || ( defined( WIN32 ) && !defined( UNDER_CE ) )
- int i_vlclen = strlen( p_this->p_libvlc->psz_vlcpath );
- vlc_bool_t b_notinroot;
-#endif
#if defined( UNDER_CE )
wchar_t psz_dir[MAX_PATH];
path[ sizeof(path)/sizeof(char*) - 2 ] = config_GetPsz( p_this,
"plugin-path" );
-#if defined( WIN32 ) && !defined( UNDER_CE ) && !defined( _MSC_VER )
- /* If there is no 'plugins' nor 'modules' subdirectory, the user may have
- * screwed up the unzipping stage, so we look into '.' instead */
- if( !opendir( "plugins" ) && !opendir( "modules" )
- && !strcmp( *ppsz_path, "modules" ) )
- {
- *ppsz_path = ".";
- }
-#endif
-
for( ; *ppsz_path != NULL ; ppsz_path++ )
{
#if defined( SYS_BEOS ) || defined( SYS_DARWIN ) \
|| ( defined( WIN32 ) && !defined( UNDER_CE ) )
- /* Store strlen(*ppsz_path) for later use. */
- int i_dirlen = strlen( *ppsz_path );
- b_notinroot = VLC_FALSE;
- /* Under BeOS, we need to add beos_GetProgramPath() to access
- * files under the current directory */
+ /* Handle relative as well as absolute paths */
#ifdef WIN32
- if( i_dirlen < 3 || (*ppsz_path)[3] != '\\' )
+ if( !(*ppsz_path)[0] || (*ppsz_path)[1] != ':' )
#else
if( (*ppsz_path)[0] != '/' )
#endif
{
- i_dirlen += i_vlclen + 2;
- b_notinroot = VLC_TRUE;
+ 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 )
else
#endif
{
- psz_fullpath = *ppsz_path;
+ psz_fullpath = strdup( *ppsz_path );
}
msg_Dbg( p_this, "recursively browsing `%s'", psz_fullpath );
AllocatePluginDir( p_this, psz_fullpath, 5 );
#endif
-#if defined( SYS_BEOS ) || defined( SYS_DARWIN )
- if( b_notinroot )
- {
- free( psz_fullpath );
- }
-#endif
+ free( psz_fullpath );
}
/* Free plugin-path */
- free( path[ sizeof(path)/sizeof(char*) - 2 ] );
+ if( path[ sizeof(path)/sizeof(char*) - 2 ] )
+ free( path[ sizeof(path)/sizeof(char*) - 2 ] );
path[ sizeof(path)/sizeof(char*) - 2 ] = NULL;
}
struct dirent * file;
#endif
- if( i_maxdepth < 0 )
+ if( p_this->p_vlc->b_die || i_maxdepth < 0 )
{
return;
}
AllocatePluginFile( p_this, psz_path );
}
}
- while( FindNextFile( handle, &finddata ) );
+ while( !p_this->p_vlc->b_die && FindNextFile( handle, &finddata ) );
/* Close the directory */
FindClose( handle );
i_dirlen = strlen( psz_dir );
/* Parse the directory and try to load all files it contains. */
- while( (file = readdir( dir )) )
+ while( !p_this->p_vlc->b_die && (file = readdir( dir )) )
{
struct stat statbuf;
unsigned int i_len;
module_t * p_module;
module_handle_t handle;
-#ifdef UNDER_CE
+ /*
+ * Try to dynamically load the module. This part is very platform-
+ * specific, and error messages should be as verbose as possible.
+ */
+
+#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) && defined(UNDER_CE)
char psz_filename[MAX_PATH];
WideCharToMultiByte( CP_ACP, WC_DEFAULTCHAR, psz_file, -1,
psz_filename, MAX_PATH, NULL, NULL );
-#else
- char * psz_filename = psz_file;
-#endif
+ handle = LoadLibrary( psz_filename );
+ if( handle == NULL )
+ {
+ char *psz_error = GetWindowsError();
+ msg_Warn( p_this, "cannot load module `%s' (%s)",
+ psz_filename, psz_error );
+ free( psz_error );
+ }
+
+#elif defined(HAVE_DL_WINDOWS) && defined(WIN32)
+ handle = LoadLibrary( psz_file );
+ if( handle == NULL )
+ {
+ char *psz_error = GetWindowsError();
+ msg_Warn( p_this, "cannot load module `%s' (%s)",
+ psz_file, psz_error );
+ free( psz_error );
+ }
+
+#elif defined(HAVE_DL_DLOPEN) && defined(RTLD_NOW)
+ /* static is OK, we are called atomically */
+ static vlc_bool_t b_kde = VLC_FALSE;
- /* Try to dynamically load the module. */
- if( module_load( psz_file, &handle ) )
+# 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" ) )
{
- char psz_buffer[256];
+ 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;
+ }
- /* The plugin module couldn't be opened */
- msg_Warn( p_this, "cannot open `%s' (%s)",
- psz_filename, module_error( psz_buffer ) );
+ 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
+
/* 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" );
- module_unload( handle );
+ CloseModule( handle );
return -1;
}
/* We need to fill these since they may be needed by CallEntry() */
+#ifdef UNDER_CE
p_module->psz_filename = psz_filename;
+#else
+ p_module->psz_filename = psz_file;
+#endif
p_module->handle = handle;
p_module->p_symbols = &p_this->p_libvlc->p_module_bank->symbols;
{
/* We couldn't call module_init() */
vlc_object_destroy( p_module );
- module_unload( handle );
+ CloseModule( handle );
return -1;
}
{
if( p_module->b_unloadable )
{
- module_unload( p_module->handle );
+ CloseModule( p_module->handle );
}
UndupModule( p_module );
free( p_module->psz_filename );
int (* pf_symbol) ( module_t * p_module );
/* Try to resolve the symbol */
- pf_symbol = (int (*)(module_t *)) module_getsymbol( p_module->handle,
- psz_name );
+ pf_symbol = (int (*)(module_t *)) GetSymbol( p_module->handle, psz_name );
if( pf_symbol == NULL )
{
- char psz_buffer[256];
-
- /* We couldn't load the symbol */
+#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,
- module_error( psz_buffer ) );
+ 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;
}
/* Everything worked fine, we can return */
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, (MYCHAR*)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'\0';
+#else
+ snprintf( psz_tmp + i, 256 - i, " (error %i)", i_error );
+ psz_tmp[ 255 ] = '\0';
+#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 */
+
#endif /* HAVE_DYNAMIC_PLUGINS */
projects / vlc / blobdiff