QObject* Manager::module(const QString& modulename)
{
if( d->modules.contains(modulename) ) {
QObject* obj = d->modules[modulename];
if( obj )
return obj;
}
if( modulename.isEmpty() || modulename.contains( QRegExp("[^a-zA-Z0-9]") ) ) {
qrosswarning( QString("Invalid module name '%1'").arg(modulename) );
return 0;
}
QByteArray libraryname = QString("qrossmodule%1").arg(modulename).toLower().toLatin1();
#if 0
KLibLoader* loader = KLibLoader::self();
KLibrary* lib = loader->library( libraryname, QLibrary::ExportExternalSymbolsHint );
if( ! lib ) { //FIXME this fallback-code should be in KLibLoader imho.
lib = loader->library( QString("lib%1").arg(libraryname), QLibrary::ExportExternalSymbolsHint );
if( ! lib ) {
qrosswarning( QString("Failed to load module '%1': %2").arg(modulename).arg(loader->lastErrorMessage()) );
return 0;
}
}
def_module_func func;
func = (def_module_func) lib->resolveFunction("qrossmodule");
if( ! func ) {
qrosswarning( QString("Failed to determinate init function in module '%1'").arg(modulename) );
return 0;
}
QObject* module = (QObject*) (func)(); // call the function
lib->unload(); // unload the library
if( ! module ) {
qrosswarning( QString("Failed to load module object '%1'").arg(modulename) );
return 0;
}
#else
if( void* funcPtr = loadLibrary(libraryname, "qrossmodule") ) {
def_module_func func = (def_module_func) funcPtr;
Q_ASSERT( func );
QObject* module = (QObject*) (func)(); // call the function
Q_ASSERT( module );
//qrossdebug( QString("Manager::module Module successfully loaded: modulename=%1 module.objectName=%2 module.className=%3").arg(modulename).arg(module->objectName()).arg(module->metaObject()->className()) );
d->modules.insert(modulename, module);
return module;
}
else {
qrosswarning( QString("Failed to load module '%1'").arg(modulename) );
}
#endif
return 0;
}
bool Greeter::loadGreetPlugin()
{
if (m_pluginHandle.library) {
//we were locked once before, so all the plugin loading's done already
//FIXME should I be unloading the plugin on unlock instead?
return true;
}
for (QStringList::ConstIterator it = m_plugins.constBegin(); it != m_plugins.constEnd(); ++it) {
GreeterPluginHandle plugin;
KLibrary *lib = new KLibrary( (*it)[0] == QLatin1Char( '/' ) ? *it : QLatin1String( "kgreet_" ) + *it );
if (lib->fileName().isEmpty()) {
kWarning(1212) << "GreeterPlugin " << *it << " does not exist" ;
delete lib;
continue;
}
if (!lib->load()) {
kWarning(1212) << "Cannot load GreeterPlugin " << *it << " (" << lib->fileName() << ")" ;
delete lib;
continue;
}
plugin.library = lib;
plugin.info = (KGreeterPluginInfo *)lib->resolveFunction( "kgreeterplugin_info" );
if (!plugin.info ) {
kWarning(1212) << "GreeterPlugin " << *it << " (" << lib->fileName() << ") is no valid greet widget plugin" ;
lib->unload();
delete lib;
continue;
}
if (plugin.info->method && !m_method.isEmpty() && m_method != QLatin1String( plugin.info->method )) {
kDebug(1212) << "GreeterPlugin " << *it << " (" << lib->fileName() << ") serves " << plugin.info->method << ", not " << m_method;
lib->unload();
delete lib;
continue;
}
if (!plugin.info->init( m_method, getConf, this )) {
kDebug(1212) << "GreeterPlugin " << *it << " (" << lib->fileName() << ") refuses to serve " << m_method;
lib->unload();
delete lib;
continue;
}
kDebug(1212) << "GreeterPlugin " << *it << " (" << plugin.info->method << ", " << plugin.info->name << ") loaded";
m_pluginHandle = plugin;
return true;
}
return false;
}
// tests whether the plugin can be loaded
bool KDecorationPlugins::canLoad(QString nameStr, KLibrary **loadedLib)
{
if (nameStr.isEmpty())
return false; // we can't load that
// Check if this library is not already loaded.
if (pluginStr == nameStr) {
if (loadedLib) {
*loadedLib = library;
}
return true;
}
KConfigGroup group(config, QString("Style"));
if (group.readEntry<bool>("NoPlugin", false)) {
error(i18n("Loading of window decoration plugin library disabled in configuration."));
return false;
}
KLibrary libToFind(nameStr);
QString path = libToFind.fileName();
kDebug(1212) << "kwin : path " << path << " for " << nameStr;
if (path.isEmpty()) {
return false;
}
// Try loading the requested plugin
KLibrary *lib = new KLibrary(path);
if (!lib)
return false;
// TODO this would be a nice shortcut, but for "some" reason QtCurve with wrong ABI slips through
// TODO figure where it's loaded w/o being unloaded and check whether that can be fixed.
#if 0
if (lib->isLoaded()) {
if (loadedLib) {
*loadedLib = lib;
}
return true;
}
#endif
// so we check whether this lib was loaded before and don't unload it in case
bool wasLoaded = lib->isLoaded();
KDecorationFactory*(*cptr)() = NULL;
int (*vptr)() = NULL;
int deco_version = 0;
KLibrary::void_function_ptr version_func = lib->resolveFunction("decoration_version");
if (version_func) {
vptr = (int(*)())version_func;
deco_version = vptr();
} else {
// block some decos known to link the unstable API but (for now) let through other legacy stuff
const bool isLegacyStableABI = !(nameStr.contains("qtcurve", Qt::CaseInsensitive) ||
nameStr.contains("crystal", Qt::CaseInsensitive) ||
nameStr.contains("oxygen", Qt::CaseInsensitive));
if (isLegacyStableABI) {
// it's an old build of a legacy decoration that very likely uses the stable API
// so we just set the API version to the current one
// TODO: remove for 4.9.x or 4.10 - this is just to cover recompiles
deco_version = KWIN_DECORATION_API_VERSION;
}
kWarning(1212) << QString("****** The library %1 has no API version ******").arg(path);
kWarning(1212) << "****** Please use the KWIN_DECORATION macro in extern \"C\" to get this decoration loaded in future versions of kwin";
}
if (deco_version != KWIN_DECORATION_API_VERSION) {
if (version_func)
kWarning(1212) << i18n("The library %1 has wrong API version %2", path, deco_version);
lib->unload();
delete lib;
return false;
}
KLibrary::void_function_ptr create_func = lib->resolveFunction("create_factory");
if (create_func)
cptr = (KDecorationFactory * (*)())create_func;
if (!cptr) {
kDebug(1212) << i18n("The library %1 is not a KWin plugin.", path);
lib->unload();
delete lib;
return false;
}
if (loadedLib) {
*loadedLib = lib;
} else {
if (!wasLoaded)
lib->unload();
delete lib;
}
return true;
}