/**************************************************************************** ** ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/ ** ** This file is part of the QtSystems module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** GNU Lesser General Public License Usage ** This file may be used under the terms of the GNU Lesser General Public ** License version 2.1 as published by the Free Software Foundation and ** appearing in the file LICENSE.LGPL included in the packaging of this ** file. Please review the following information to ensure the GNU Lesser ** General Public License version 2.1 requirements will be met: ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU General ** Public License version 3.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of this ** file. Please review the following information to ensure the GNU General ** Public License version 3.0 requirements will be met: ** http://www.gnu.org/copyleft/gpl.html. ** ** Other Usage ** Alternatively, this file may be used in accordance with the terms and ** conditions contained in a signed written agreement between you and Nokia. ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qservicemanager.h" #include "qserviceplugininterface.h" #include "qserviceinterfacedescriptor_p.h" #include "qremoteserviceregister_p.h" #include "qremoteserviceregisterentry_p.h" #include "qserviceoperations_p.h" #include "qservicereply.h" #include "qservicerequest_p.h" #include "qservicedebuglog_p.h" #ifdef QT_ADDON_JSONDB_LIB #include "databasemanager_jsondb_p.h" #else #include "databasemanager_p.h" #endif #include #include #include #include #include #include #include #include QT_BEGIN_NAMESPACE QString QServiceManager::resolveLibraryPath(const QString &libNameOrPath) { if (QFile::exists(libNameOrPath)) return libNameOrPath; // try to find plug-in via QLibrary QStringList paths = QCoreApplication::libraryPaths(); #ifdef QTM_PLUGIN_PATH paths << QLatin1String(QTM_PLUGIN_PATH)+QLatin1String("/serviceframework"); #endif for (int i=0; iunload(); delete m_loader; } } QPluginLoader *m_loader; }; class QServiceManagerPrivate : public QObject { Q_OBJECT public: QServiceManager *manager; DatabaseManager *dbManager; QServiceOperations *ops; QService::Scope scope; QServiceManager::Error error; QServiceManagerPrivate(QServiceManager *parent = 0) : QObject(parent), manager(parent), dbManager(new DatabaseManager), ops(0) { connect(dbManager, SIGNAL(serviceAdded(QString, DatabaseManager::DbScope)), SLOT(serviceAdded(QString, DatabaseManager::DbScope))); connect(dbManager, SIGNAL(serviceRemoved(QString, DatabaseManager::DbScope)), SLOT(serviceRemoved(QString, DatabaseManager::DbScope))); } ~QServiceManagerPrivate() { delete dbManager; } void setError(QServiceManager::Error err) { if (error != err) { error = err; manager->errorChanged(); } } void setError() { QServiceManager::Error prev = error; switch (dbManager->lastError().code()) { case DBError::NoError: error = QServiceManager::NoError; break; case DBError::DatabaseNotOpen: case DBError::InvalidDatabaseConnection: case DBError::CannotCreateDbDir: case DBError::CannotOpenServiceDb: case DBError::NoWritePermissions: case DBError::InvalidDatabaseFile: error = QServiceManager::StorageAccessError; break; case DBError::LocationAlreadyRegistered: error = QServiceManager::ServiceAlreadyExists; break; case DBError::IfaceImplAlreadyRegistered: error = QServiceManager::ImplementationAlreadyExists; break; case DBError::NotFound: error = QServiceManager::ComponentNotFound; break; case DBError::InvalidDescriptorScope: error = QServiceManager::InvalidServiceInterfaceDescriptor; break; case DBError::SqlError: case DBError::IfaceIDNotExternal: case DBError::ExternalIfaceIDFound: case DBError::UnknownError: error = QServiceManager::UnknownError; break; } if (prev != error) manager->errorChanged(); } private Q_SLOTS: void serviceAdded(const QString &service, DatabaseManager::DbScope dbScope) { QService::Scope s = (dbScope == DatabaseManager::SystemScope ? QService::SystemScope : QService::UserScope); emit manager->serviceAdded(service, s); } void serviceRemoved(const QString &service, DatabaseManager::DbScope dbScope) { QService::Scope s = (dbScope == DatabaseManager::SystemScope ? QService::SystemScope : QService::UserScope); emit manager->serviceRemoved(service, s); } }; /*! \class QServiceManager \ingroup servicefw \inmodule QtServiceFramework \brief The QServiceManager class enables the loading of service plugins and the (de)registration of services. A service is a stand-alone component that can be used by multiple clients. Each service implementation must derive from QObject. Clients request a reference to a service via \l loadInterface() or \l loadLocalTypedInterface(). Services are separate deliveries in the form of plug-ins. New services can be (de)registered at any time via \l addService() and \l removeService() respectively. Such an event is published via the \l serviceAdded() and \l serviceRemoved() signal. Each service plug-in must implement QServicePluginInterface. Each plug-in may support multiple interfaces and may even provide multiple implementations for the same interface. Individual implementations are identified via QServiceInterfaceDescriptor. For a more detailed explanation of services and how they relate to interface and their implementations please see QServiceInterfaceDescriptor. \sa QServicePluginInterface */ /*! \enum QServiceManager::Error Defines the possible errors for the service manager. \value NoError No error occurred. \value StorageAccessError The service data storage is not accessible. This could be because the caller does not have the required permissions. \value InvalidServiceLocation The service was not found at its specified \l{QServiceInterfaceDescriptor::Location}{location}. \value InvalidServiceXml The XML defining the service metadata is invalid. \value InvalidServiceInterfaceDescriptor The service interface descriptor is invalid, or refers to an interface implementation that cannot be accessed in the current scope. \value ServiceAlreadyExists Another service has previously been registered with the same \l{QServiceInterfaceDescriptor::Location}{location}. \value ImplementationAlreadyExists Another service that implements the same interface version has previously been registered. \value PluginLoadingFailed The service plugin cannot be loaded. \value ComponentNotFound The service or interface implementation has not been registered. \value ServiceCapabilityDenied The security session does not permit service access based on its capabilities. \value UnknownError An unknown error occurred. */ /*! \fn void QServiceManager::serviceAdded(const QString& serviceName, QService::Scope scope) This signal is emited whenever a new service with the given \a serviceName has been registered with the service manager. \a scope indicates where the service was added. If the manager scope is QService::SystemScope, it will not receive notifications about services added in the user scope. \sa addService() */ /*! \fn void QServiceManager::serviceRemoved(const QString& serviceName, QService::Scope scope) This signal is emited whenever a service with the given \a serviceName has been deregistered with the service manager. \a scope indicates where the service was added. If the manager scope is QService::SystemScope, it will not receive notifications about services removed in the user scope. \sa removeService() */ /*! Creates a service manager with the given \a parent. The scope will default to QService::UserScope. The service manager will also ensure that a background thread is started to handle service manager requests. If you need to supress this behavior so that all requests are handled in the foreground (in the main GUI thread) export the following environment variable: \code env QT_NO_SFW_BACKGROUND_OPERATION /path/to/my_sfw_app \endcode */ QServiceManager::QServiceManager(QObject *parent) : QObject(parent), d(new QServiceManagerPrivate(this)) { qRegisterMetaType("QService::UnrecoverableIPCError"); d->scope = QService::UserScope; } /*! Creates a service manager with the given \a scope and \a parent. */ QServiceManager::QServiceManager(QService::Scope scope, QObject *parent) : QObject(parent), d(new QServiceManagerPrivate(this)) { d->scope = scope; } /*! Destroys the service manager. */ QServiceManager::~QServiceManager() { if (d->ops) d->ops->disengage(); delete d; } /*! Returns the scope used for registering and searching of services. */ QService::Scope QServiceManager::scope() const { return d->scope; } /*! Returns a list of the services that provide the interface specified by \a interfaceName. If \a interfaceName is empty, this function returns a list of all available services in this manager's scope. */ QStringList QServiceManager::findServices(const QString& interfaceName) const { d->setError(QServiceManager::NoError); QStringList services; services = d->dbManager->getServiceNames(interfaceName, d->scope == QService::SystemScope ? DatabaseManager::SystemScope : DatabaseManager::UserScope); d->setError(); return services; } /*! Returns a list of the interfaces that match the specified \a filter. */ QList QServiceManager::findInterfaces(const QServiceFilter& filter) const { d->setError(QServiceManager::NoError); QList descriptors = d->dbManager->getInterfaces(filter, d->scope == QService::SystemScope ? DatabaseManager::SystemScope : DatabaseManager::UserScope); if (descriptors.isEmpty() && d->dbManager->lastError().code() != DBError::NoError) { d->setError(); return QList(); } return descriptors; } /*! Returns a list of the interfaces provided by the service named \a serviceName. If \a serviceName is empty, this function returns a list of all available interfaces in this manager's scope. */ QList QServiceManager::findInterfaces(const QString& serviceName) const { QServiceFilter filter; if (!serviceName.isEmpty()) filter.setServiceName(serviceName); return findInterfaces(filter); } /*! Loads and returns the interface specified by \a interfaceName. The caller takes ownership of the returned pointer. This function returns a null pointer if the requested service cannot be found. \sa setInterfaceDefault(), interfaceDefault() */ QObject* QServiceManager::loadInterface(const QString& interfaceName) { return loadInterface(interfaceDefault(interfaceName)); } /*! \internal Private helper function to get the QObject for an InterProcess service. */ QObject *QServiceManager::loadInterProcessService(const QServiceInterfaceDescriptor &descriptor, const QString &serviceLocation) const { //ipc service const int majorversion = descriptor.majorVersion(); const int minorversion = descriptor.minorVersion(); QString version = QString::number(majorversion) + QLatin1String(".") + QString::number(minorversion); QRemoteServiceRegister::Entry serviceEntry; serviceEntry.d->iface = descriptor.interfaceName(); serviceEntry.d->service = descriptor.serviceName(); serviceEntry.d->ifaceVersion = version; QObject* service = QRemoteServiceRegisterPrivate::proxyForService(serviceEntry, serviceLocation); if (!service) d->setError(QServiceManager::InvalidServiceLocation); //client owns proxy object return service; } /*! \internal Private helper function to get the QObject for an InProcess (plugin-based) service. */ QObject *QServiceManager::loadInProcessService(const QServiceInterfaceDescriptor& descriptor, const QString &serviceFilePath) const { QScopedPointer loader(new QPluginLoader(serviceFilePath)); QObject *obj = 0; // pluginIFace is same for all service instances of the same plugin // calling loader->unload deletes pluginIFace automatically if no other // service instance is around QServicePluginInterface *pluginIFace = qobject_cast(loader->instance()); if (pluginIFace) { //check initialization first as the service may be a pre-registered one bool doLoading = true; QString serviceInitialized = descriptor.customAttribute(QLatin1String(SERVICE_INITIALIZED_ATTR)); if (!serviceInitialized.isEmpty() && (serviceInitialized == QLatin1String("NO"))) { // open/create the semaphore using the service's name as identifier QSystemSemaphore semaphore(descriptor.serviceName(), 1); if (semaphore.error() != QSystemSemaphore::NoError) { //try to create it semaphore.setKey(descriptor.serviceName(), 1, QSystemSemaphore::Create); } if (semaphore.error() == QSystemSemaphore::NoError && semaphore.acquire()) { pluginIFace->installService(); DatabaseManager::DbScope scope = d->scope == QService::UserScope ? DatabaseManager::UserOnlyScope : DatabaseManager::SystemScope; d->dbManager->serviceInitialized(descriptor.serviceName(), scope); semaphore.release(); } else { qWarning() << semaphore.errorString(); doLoading = false; } } if (doLoading) { obj = pluginIFace->createInstance(descriptor); if (obj) { QServicePluginCleanup *cleanup = new QServicePluginCleanup(loader.take()); QObject::connect(obj, SIGNAL(destroyed()), cleanup, SLOT(deleteLater())); } else { qWarning() << "Cannot create object instance for " << descriptor.interfaceName() << ":" << serviceFilePath; } } } else { qWarning() << "QServiceManager::loadInterface():" << serviceFilePath << loader->errorString(); } return obj; } /*! Loads and returns the interface specified by \a descriptor. The caller takes ownership of the returned pointer. This function returns a null pointer if the requested service cannot be found. \sa loadInterfaceRequest() */ QObject* QServiceManager::loadInterface(const QServiceInterfaceDescriptor& descriptor) { qServiceLog() << "class" << "QServiceManager" << "event" << "loadInterface" << "interface" << descriptor.interfaceName() << "service" << descriptor.serviceName(); d->setError(QServiceManager::NoError); if (!descriptor.isValid()) { d->setError(QServiceManager::InvalidServiceInterfaceDescriptor); return 0; } QObject *obj = 0; int serviceType = descriptor.attribute(QServiceInterfaceDescriptor::ServiceType).toInt(); QString location = descriptor.attribute(QServiceInterfaceDescriptor::Location).toString(); if (serviceType == QService::InterProcess) { return loadInterProcessService(descriptor, location); } else { QString serviceFilePath = resolveLibraryPath(location); if (serviceFilePath.isEmpty()) { d->setError(QServiceManager::InvalidServiceLocation); return 0; } obj = loadInProcessService(descriptor, serviceFilePath); if (!obj) d->setError(QServiceManager::PluginLoadingFailed); } return obj; } /*! \fn QServiceReply *loadInterfaceRequest(const QString &interfaceName) Initiate a background request to load the interface specified by \a interfaceName, and return a QServiceReply object to track the results of the request. */ /*! \fn QServiceReply *loadInterfaceRequest(const QServiceInterfaceDescriptor& descriptor) Initiate a background request to load the interface specified by \a descriptor, and return a QServiceReply object to track the results of the request. */ /*! \fn QServiceReplyTyped *loadLocalTypedInterfaceRequest(const QString& interfaceName) Initiate a background request to load the interface specified by \a interfaceName, and return a QServiceReplyTyped object to track the results of the request. \code // a member variable to track the reply QServiceReply *m_reply; // make the request m_reply = *mgr->loadLocalTypedInterfaceRequest(sksIfaceName); connect(m_reply, SIGNAL(finished()), this, SLOT(handleServiceInfo)); // ...later, in the handler SomeKnownService *svc = m_reply->proxyObject(); \endcode */ /*! \fn QServiceReplyTyped *loadLocalTypedInterfaceRequest(const QServiceInterfaceDescriptor& descriptor) Initiate a background request to load the interface specified by \a interfaceName, and return a QServiceReplyTyped object to track the results of the request. */ /*! \internal Initiate a background request to load and return the interface specified by \a interfaceName, and using the given \a reply object, which (if non-null) will be a typed sub-class object. If it is null a default QServiceReply is constructed. */ QServiceReply *QServiceManager::loadInterfaceRequest(const QString &interfaceName) { QServiceReply *reply = new QServiceReply; if (!qgetenv("QT_NO_SFW_BACKGROUND_OPERATION").isEmpty()) { qWarning("Turning off sfw background operations as requested."); return 0; } if (!d->ops) { d->ops = QServiceOperations::instance(); d->ops->engage(); } reply->setRequest(interfaceName); QServiceRequest req(interfaceName); req.setReply(reply); req.setScope(scope()); d->ops->initiateRequest(req); return reply; } /*! \internal Initiate a background request to load and return the interface specified by \a descriptor, and using the given \a reply object, which (if non-null) will be a typed sub-class object. If it is null a default QServiceReply is constructed. */ QServiceReply *QServiceManager::loadInterfaceRequest(const QServiceInterfaceDescriptor &descriptor) { QServiceReply *reply = new QServiceReply(); if (!d->ops) { d->ops = QServiceOperations::instance(); d->ops->engage(); } reply->setRequest(descriptor.interfaceName()); QServiceRequest req(descriptor); req.setReply(reply); req.setScope(scope()); d->ops->initiateRequest(req); return reply; } /*! If \a interfaceName is an out of process service this verifies the interface is running. If the service is in process this function always returns false. Use this function to verify the interface requested is running. This is useful is you only want to call loadInterface when the service is already running. This call does not guarantee that the service will remain running, as such a race condition exists if the service quits between this call being made and loadInterface being called. If the service can not be fount this returns false. \sa setInterfaceDefault(), interfaceDefault(), loadInterface() */ bool QServiceManager::isInterfaceRunning(const QString& interfaceName) { return isInterfaceRunning(interfaceDefault(interfaceName)); } /*! If \a descriptor is an out of process service this verifies the service is running. If the service is in process this function always returns false. Use this function to verify the interface requested is running. This is useful is you only want to call loadInterface when the service is already running. This call does not guarantee that the service will remain running, as such a race condition exists if the service quits between this call being made and loadInterface being called. If the service can not be found this returns false. Error is set if an error occurs. */ bool QServiceManager::isInterfaceRunning(const QServiceInterfaceDescriptor& descriptor) { d->setError(NoError); if (!descriptor.isValid()) { d->setError(InvalidServiceInterfaceDescriptor); return false; } const QString location = descriptor.attribute(QServiceInterfaceDescriptor::Location).toString(); const bool isInterProcess = (descriptor.attribute(QServiceInterfaceDescriptor::ServiceType).toInt() == QService::InterProcess); if (isInterProcess) { //ipc service const int majorversion = descriptor.majorVersion(); const int minorversion = descriptor.minorVersion(); QString version = QString::number(majorversion) + QLatin1String(".") + QString::number(minorversion); QRemoteServiceRegister::Entry serviceEntry; serviceEntry.d->iface = descriptor.interfaceName(); serviceEntry.d->service = descriptor.serviceName(); serviceEntry.d->ifaceVersion = version; return QRemoteServiceRegisterPrivate::isServiceRunning(serviceEntry, location); } return false; } /*! \fn T* QServiceManager::loadLocalTypedInterface(const QString& interfaceName) Loads the service object implementing \a interfaceName, as provided by the default service for this interface. The template class must be derived from QObject. If \a interfaceName is not a known interface the returned pointer will be null. Note that using this function implies that service and client share the implementation of T which means that service and client become tightly coupled. This may cause issue during later updates as certain changes may require code changes to the service and client. The caller takes ownership of the returned pointer. \sa setInterfaceDefault(), interfaceDefault() */ /*! \fn T* QServiceManager::loadLocalTypedInterface(const QServiceInterfaceDescriptor& serviceDescriptor) Loads the service object identified by \a serviceDescriptor. The template class must be derived from QObject. If the \a serviceDescriptor is not valid the returned pointer will be null. Note that using this function implies that service and client share the implementation of T which means that service and client become tightly coupled. This may cause issue during later updates as certain changes may require code changes to the service and client. The caller takes ownership of the returned pointer. */ /*! Registers the service defined by the XML file at \a xmlFilePath. Returns true if the registration succeeded, and false otherwise. If a previously unkown interface is added the newly registered service automatically becomes the new default service provider for the new interface. A service plugin cannot be added if another service is already registered with the same plugin file path. A service plugin also cannot be added if the service is already registered and implements any of the same interface versions that the new plugin implements. \sa removeService(), setInterfaceDefault() */ bool QServiceManager::addService(const QString& xmlFilePath) { QFile *f = new QFile(xmlFilePath); bool b = addService(f); delete f; return b; } /*! Registers the service defined by the XML data from the given \a device. Returns true if the registration succeeded, and false otherwise. If a previously unkown interface is added the newly registered service automatically becomes the new default service provider for the new interface. Registering a service also causes QServicePluginInterface::installService() to be called on the service. If the service plugin is not accessible (e.g. if the plugin file is not found) and \c installService() cannot be invoked on the service, the registration fails and this method returns false. A service plugin cannot be added if another service is already registered with the same plugin file path. A service plugin also cannot be added if the service is already registered and implements any of the same interface versions that the new plugin implements. Services are always added based on the \l scope() of the current service manager instance. \sa removeService(), setInterfaceDefault() */ bool QServiceManager::addService(QIODevice *device) { d->setError(QServiceManager::NoError); ServiceMetaData parser(device); if (!parser.extractMetadata()) { d->setError(QServiceManager::InvalidServiceXml); return false; } const ServiceMetaDataResults data = parser.parseResults(); DatabaseManager::DbScope scope = d->scope == QService::UserScope ? DatabaseManager::UserOnlyScope : DatabaseManager::SystemScope; ServiceMetaDataResults results = parser.parseResults(); bool result = d->dbManager->registerService(results, scope); if (results.type == QService::InterProcess) return result; //test the new plug-in if (result) { QPluginLoader *loader = new QPluginLoader(resolveLibraryPath(data.location)); QServicePluginInterface *pluginIFace = qobject_cast(loader->instance()); if (pluginIFace) { pluginIFace->installService(); } else { d->setError(QServiceManager::PluginLoadingFailed); result = false; qWarning() << "QServiceManager::addService()" << data.location << "->" << resolveLibraryPath(data.location) << ":" << loader->errorString() << " - Aborting registration"; d->dbManager->unregisterService(data.name, scope); } //loader->unload(); delete loader; } else { d->setError(); } return result; } /*! Unregisters the service specified by \a serviceName. Returns true if the unregistration succeeded, and false otherwise. If a default service implementation is removed and there are other implementations for the same interface, the service manager chooses the implementation with the highest version number as the new default. If there is more than one serivce with the same version number, the service manager makes a random choice with regards to the new default implementation. If this is not the desired behaviour the default selection should be updated via setInterfaceDefault(). Services are always removed based on the \l scope() of the current service manager instance. \sa addService() */ bool QServiceManager::removeService(const QString& serviceName) { d->setError(QServiceManager::NoError); if (serviceName.isEmpty()) { d->setError(QServiceManager::ComponentNotFound); return false; } // Call QServicePluginInterface::uninstallService() on all plugins that // match this service QSet pluginPathsSet; QList descriptors = findInterfaces(serviceName); for (int i=0; i pluginPaths = pluginPathsSet.toList(); for (int i=0; i(loader->instance()); if (pluginIFace) pluginIFace->uninstallService(); else qWarning() << "QServiceManager: unable to invoke uninstallService() on removed service"; //loader->unload(); delete loader; } if (!d->dbManager->unregisterService(serviceName, d->scope == QService::UserScope ? DatabaseManager::UserOnlyScope : DatabaseManager::SystemScope)) { d->setError(); return false; } return true; } /*! Sets the default interface implementation for \a interfaceName to the matching interface implementation provided by \a service. If \a service provides more than one interface implementation for \a interfaceName, the newest version of the interface is set as the default. Returns true if the operation succeeded, and false otherwise. \b {Note:} When in system scope, the \a service must be a system-wide service rather than a user-specific service; otherwise, this will fail. */ bool QServiceManager::setInterfaceDefault(const QString &service, const QString &interfaceName) { d->setError(QServiceManager::NoError); if (service.isEmpty() || interfaceName.isEmpty()) { d->setError(QServiceManager::ComponentNotFound); return false; } DatabaseManager::DbScope scope = d->scope == QService::SystemScope ? DatabaseManager::SystemScope : DatabaseManager::UserScope; if (!d->dbManager->setInterfaceDefault(service, interfaceName, scope)) { d->setError(); return false; } return true; } /*! \overload Sets the interface implementation specified by \a descriptor to be the default implementation for the particular interface specified in the descriptor. Returns true if the operation succeeded, and false otherwise. \b {Note:} When in system scope, the \a descriptor must refer to a system-wide service rather than a user-specific service; otherwise, this will fail. */ bool QServiceManager::setInterfaceDefault(const QServiceInterfaceDescriptor& descriptor) { d->setError(QServiceManager::NoError); DatabaseManager::DbScope scope = d->scope == QService::SystemScope ? DatabaseManager::SystemScope : DatabaseManager::UserScope; if (!d->dbManager->setInterfaceDefault(descriptor, scope)) { d->setError(); return false; } return true; } /*! Returns the default interface implementation for the given \a interfaceName. */ QServiceInterfaceDescriptor QServiceManager::interfaceDefault(const QString& interfaceName) const { qDebug() << "QServiceManager::interfaceDefault" << interfaceName; d->setError(QServiceManager::NoError); DatabaseManager::DbScope scope = d->scope == QService::SystemScope ? DatabaseManager::SystemScope : DatabaseManager::UserScope; QServiceInterfaceDescriptor info = d->dbManager->interfaceDefault(interfaceName, scope); if (d->dbManager->lastError().code() != DBError::NoError) { d->setError(); qDebug() << "error" << d->dbManager->lastError().text(); return QServiceInterfaceDescriptor(); } return info; } /*! Returns the type of error that last occurred. */ QServiceManager::Error QServiceManager::error() const { return d->error; } /*! \internal */ void QServiceManager::connectNotify(const QMetaMethod &signal) { static const QMetaMethod serviceAddedSignal = QMetaMethod::fromSignal(&QServiceManager::serviceAdded); static const QMetaMethod serviceRemovedSignal = QMetaMethod::fromSignal(&QServiceManager::serviceRemoved); if (signal == serviceAddedSignal || signal == serviceRemovedSignal) { if (d->scope != QService::SystemScope) d->dbManager->setChangeNotificationsEnabled(DatabaseManager::UserScope, true); d->dbManager->setChangeNotificationsEnabled(DatabaseManager::SystemScope, true); } } /*! \internal */ void QServiceManager::disconnectNotify(const QMetaMethod &signal) { static const QMetaMethod serviceAddedSignal = QMetaMethod::fromSignal(&QServiceManager::serviceAdded); static const QMetaMethod serviceRemovedSignal = QMetaMethod::fromSignal(&QServiceManager::serviceRemoved); if (signal == serviceAddedSignal || signal == serviceRemovedSignal) { if (!isSignalConnected(serviceAddedSignal) && !isSignalConnected(serviceRemovedSignal)) { if (d->scope != QService::SystemScope) d->dbManager->setChangeNotificationsEnabled(DatabaseManager::UserScope, false); d->dbManager->setChangeNotificationsEnabled(DatabaseManager::SystemScope, false); } } } bool QServiceManager::event(QEvent *e) { if (e->type() == QEvent::ThreadChange) { qWarning() << "QServiceManager CANNOT BE MOVED THREADS!"; } return QObject::event(e); } #include "moc_qservicemanager.cpp" #include "qservicemanager.moc" QT_END_NAMESPACE