1 /***************************************************************************
2 * Copyright (C) 2005-08 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include "signalproxy.h"
25 #include <QAbstractSocket>
26 #include <QHostAddress>
32 #include <QMetaMethod>
33 #include <QMetaProperty>
41 #include <QCoreApplication>
43 #include "syncableobject.h"
46 // ==================================================
48 // ==================================================
49 class PeerSignalEvent : public QEvent {
51 PeerSignalEvent(SignalProxy *sender, SignalProxy::RequestType requestType, const QVariantList ¶ms) : QEvent(QEvent::Type(SignalProxy::PeerSignal)), sender(sender), requestType(requestType), params(params) {}
53 SignalProxy::RequestType requestType;
57 class RemovePeerEvent : public QEvent {
59 RemovePeerEvent(QObject *peer) : QEvent(QEvent::Type(SignalProxy::RemovePeer)), peer(peer) {}
63 // ==================================================
65 // ==================================================
66 class SignalRelay: public QObject {
67 /* Q_OBJECT is not necessary or even allowed, because we implement
68 qt_metacall ourselves (and don't use any other features of the meta
72 SignalRelay(SignalProxy* parent, QObject* source);
73 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
75 void attachSignal(int methodId, const QByteArray &func);
77 void setSynchronize(bool);
79 inline bool synchronize() const { return _sync; }
80 inline int sigCount() const { return sigNames.count(); }
83 bool isSyncMethod(int i);
87 QMultiHash<int, QByteArray> sigNames;
91 SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
97 QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
100 int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
101 _id = QObject::qt_metacall(_c, _id, _a);
105 SignalProxy::ExtendedMetaObject *eMeta = proxy->extendedMetaObject(caller);
107 if(_c == QMetaObject::InvokeMetaMethod) {
108 if(sigNames.contains(_id) || synchronize()) {
109 const QList<int> &argTypes = eMeta->argTypes(_id);
111 int n = argTypes.size();
112 for(int i=0; i<n; i++) {
113 if(argTypes[i] == 0) {
114 qWarning() << "SignalRelay::qt_metacall(): received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(caller->metaObject()->className()).arg(caller->metaObject()->method(_id).signature());
115 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
118 params.append(QVariant(argTypes[i], _a[i+1]));
120 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
121 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
122 proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params);
126 // dispatch Sync Signal if necessary
127 QByteArray signature(caller->metaObject()->method(_id).signature());
128 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
129 if(synchronize() && eMeta->syncMap().contains(signature)) {
130 //qDebug() << "__SYNC__ >>>"
131 // << caller->metaObject()->className()
132 // << caller->objectName()
135 // params.prepend(QVariant(_id));
136 params.prepend(signature);
137 params.prepend(syncObject->objectName());
138 params.prepend(syncObject->syncMetaObject()->className());
139 proxy->dispatchSignal(SignalProxy::Sync, params);
142 _id -= QObject::staticMetaObject.methodCount();
147 void SignalRelay::setSynchronize(bool sync) {
148 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
152 const QMetaObject *meta = syncObject->syncMetaObject();
155 for(int i = 0; i < meta->methodCount(); i++ ) {
157 QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
159 } else if (_sync && !sync) {
161 for(int i = 0; i < meta->methodCount(); i++ ) {
163 QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
169 bool SignalRelay::isSyncMethod(int i) {
170 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
174 QByteArray signature = syncObject->syncMetaObject()->method(i).signature();
175 SignalProxy::ExtendedMetaObject *eMeta = proxy->extendedMetaObject(caller);
177 if(!eMeta->syncMap().contains(signature))
180 if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested"))
183 if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested"))
189 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
190 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
191 // all connected methodIds are offset by the standard methodCount of QObject
192 if(!sigNames.contains(methodId))
193 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
196 if(!func.isEmpty()) {
197 fn = QMetaObject::normalizedSignature(func);
199 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
201 sigNames.insert(methodId, fn);
204 // ==================================================
206 // ==================================================
207 void SignalProxy::IODevicePeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
208 QVariantList packedFunc;
209 packedFunc << (qint16)requestType
211 dispatchPackedFunc(QVariant(packedFunc));
214 bool SignalProxy::IODevicePeer::isSecure() const {
216 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(_device);
218 return sslSocket->isEncrypted() || sslSocket->localAddress() == QHostAddress::LocalHost || sslSocket->localAddress() == QHostAddress::LocalHostIPv6;
221 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
223 return socket->localAddress() == QHostAddress::LocalHost || socket->localAddress() == QHostAddress::LocalHostIPv6;
228 QString SignalProxy::IODevicePeer::address() const {
229 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
231 return socket->peerAddress().toString();
236 void SignalProxy::SignalProxyPeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
237 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
238 ? Qt::DirectConnection
239 : Qt::QueuedConnection;
241 if(type == Qt::DirectConnection) {
242 receiver->receivePeerSignal(sender, requestType, params);
244 QCoreApplication::postEvent(receiver, new PeerSignalEvent(sender, requestType, params));
248 // ==================================================
250 // ==================================================
251 SignalProxy::SignalProxy(QObject* parent)
254 setProxyMode(Client);
258 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
265 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
273 SignalProxy::~SignalProxy() {
274 QList<QObject*> senders = _relayHash.keys();
275 foreach(QObject* sender, senders)
276 detachObject(sender);
280 void SignalProxy::setProxyMode(ProxyMode mode) {
281 PeerHash::iterator peer = _peers.begin();
282 while(peer != _peers.end()) {
283 if((*peer)->type() != AbstractPeer::IODevicePeer) {
284 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
285 if(ioPeer->isOpen()) {
286 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
290 if((*peer)->type() != AbstractPeer::SignalProxyPeer) {
291 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
304 void SignalProxy::init() {
305 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
306 _heartBeatTimer.start(30 * 1000);
311 void SignalProxy::initServer() {
314 void SignalProxy::initClient() {
315 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
318 bool SignalProxy::addPeer(QIODevice* iodev) {
322 if(_peers.contains(iodev))
325 if(proxyMode() == Client && !_peers.isEmpty()) {
326 qWarning("SignalProxy: only one peer allowed in client mode!");
330 if(!iodev->isOpen()) {
331 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
335 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
336 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
339 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
341 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
346 iodev->setParent(this);
348 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
350 if(_peers.count() == 1)
357 bool SignalProxy::addPeer(SignalProxy* proxy) {
361 if(proxyMode() == proxy->proxyMode()) {
362 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
366 if(_peers.contains(proxy)) {
370 if(proxyMode() == Client && !_peers.isEmpty()) {
371 qWarning("SignalProxy: only one peer allowed in client mode!");
375 _peers[proxy] = new SignalProxyPeer(this, proxy);
376 proxy->addPeer(this);
378 if(_peers.count() == 1)
385 void SignalProxy::removeAllPeers() {
386 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
387 // wee need to copy that list since we modify it in the loop
388 QList<QObject *> peers = _peers.keys();
389 foreach(QObject *peer, peers) {
394 void SignalProxy::removePeer(QObject* dev) {
395 if(_peers.isEmpty()) {
396 qWarning() << "SignalProxy::removePeer(): No peers in use!";
401 if(!_peers.contains(dev)) {
402 qWarning() << "SignalProxy: unknown Peer" << dev;
406 AbstractPeer *peer = _peers[dev];
409 disconnect(dev, 0, this, 0);
410 if(peer->type() == AbstractPeer::IODevicePeer)
411 emit peerRemoved(static_cast<QIODevice *>(dev));
413 if(peer->type() == AbstractPeer::SignalProxyPeer) {
414 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
415 if(proxy->_peers.contains(this))
416 proxy->removePeer(this);
419 if(dev->parent() == this)
430 void SignalProxy::removePeerBySender() {
431 removePeer(sender());
434 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
435 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
436 const QMetaObject *meta = syncObject->syncMetaObject();
437 const QByteArray className(meta->className());
438 objectRenamed(className, newname, oldname);
440 if(proxyMode() == Client)
444 params << "__objectRenamed__" << className << newname << oldname;
445 dispatchSignal(RpcCall, params);
448 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
449 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
450 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
455 const QMetaObject *SignalProxy::metaObject(const QObject *obj) {
456 if(const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
457 return syncObject->syncMetaObject();
459 return obj->metaObject();
462 SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QObject *obj) const {
463 if(_extendedMetaObjects.contains(metaObject(obj)))
464 return _extendedMetaObjects[metaObject(obj)];
469 void SignalProxy::createExtendedMetaObject(const QObject *obj) {
470 const QMetaObject *meta = metaObject(obj);
471 if(!_extendedMetaObjects.contains(meta)) {
472 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta);
476 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
477 const QMetaObject* meta = metaObject(sender);
478 QByteArray sig(meta->normalizedSignature(signal).mid(1));
479 int methodId = meta->indexOfMethod(sig.constData());
480 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
481 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
485 createExtendedMetaObject(sender);
488 if(_relayHash.contains(sender))
489 relay = _relayHash[sender];
491 relay = _relayHash[sender] = new SignalRelay(this, sender);
493 relay->attachSignal(methodId, sigName);
499 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
500 const QMetaObject* meta = recv->metaObject();
501 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
502 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
503 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
507 createExtendedMetaObject(recv);
509 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
510 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
512 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
513 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
517 void SignalProxy::synchronize(SyncableObject *obj) {
518 createExtendedMetaObject(obj);
520 // attaching all the Signals
522 if(_relayHash.contains(obj))
523 relay = _relayHash[obj];
525 relay = _relayHash[obj] = new SignalRelay(this, obj);
527 relay->setSynchronize(true);
529 // attaching as slave to receive sync Calls
530 QByteArray className(obj->syncMetaObject()->className());
531 _syncSlave[className][obj->objectName()] = obj;
533 if(proxyMode() == Server) {
534 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
535 obj->setInitialized();
536 emit objectInitialized(obj);
538 if(obj->isInitialized())
539 emit objectInitialized(obj);
545 void SignalProxy::detachSender() {
546 detachObject(sender());
549 void SignalProxy::detachObject(QObject* obj) {
550 stopSync(static_cast<SyncableObject *>(obj));
555 void SignalProxy::detachSignals(QObject* sender) {
556 if(!_relayHash.contains(sender))
558 _relayHash.take(sender)->deleteLater();
561 void SignalProxy::detachSlots(QObject* receiver) {
562 SlotHash::iterator slotIter = _attachedSlots.begin();
563 while(slotIter != _attachedSlots.end()) {
564 if(slotIter.value().first == receiver) {
565 slotIter = _attachedSlots.erase(slotIter);
571 void SignalProxy::stopSync(SyncableObject* obj) {
572 if(_relayHash.contains(obj))
573 _relayHash[obj]->setSynchronize(false);
575 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
576 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
577 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
578 while(classIter != _syncSlave.end()) {
579 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
580 classIter->remove(obj->objectName());
587 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
588 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
589 PeerHash::iterator peer = _peers.begin();
590 while(peer != _peers.end()) {
591 switch((*peer)->type()) {
592 case AbstractPeer::IODevicePeer:
594 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
596 ioPeer->dispatchPackedFunc(packedFunc);
598 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
601 case AbstractPeer::SignalProxyPeer:
602 (*peer)->dispatchSignal(requestType, params);
605 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
611 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
612 QVariantList params(packedFunc.toList());
614 if(params.isEmpty()) {
615 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
619 RequestType requestType = (RequestType)params.takeFirst().value<int>();
620 receivePeerSignal(sender, requestType, params);
623 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
624 switch(requestType) {
627 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
629 handleSignal(params);
630 //handleSignal(params.takeFirst().toByteArray(), params);
634 handleSync(sender, params);
638 handleInitRequest(sender, params);
642 handleInitData(sender, params);
646 receiveHeartBeat(sender, params);
650 receiveHeartBeatReply(sender, params);
654 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
658 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
659 if(!_peers.contains(sender)) {
660 // we output only the pointer value. otherwise Qt would try to pretty print. As the object might already been destroyed, this is not a good idea.
661 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
664 receivePeerSignal(_peers[sender], requestType, params);
667 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
668 if(params.count() < 3) {
669 qWarning() << "received invalid Sync call" << params;
673 QByteArray className = params.takeFirst().toByteArray();
674 QString objectName = params.takeFirst().toString();
675 QByteArray signal = params.takeFirst().toByteArray();
677 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
678 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
683 SyncableObject *receiver = _syncSlave[className][objectName];
684 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
685 if(!eMeta->syncMap().contains(signal)) {
686 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
691 int slotId = eMeta->syncMap()[signal];
693 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
694 if(!invokeSlot(receiver, slotId, params, returnValue)) {
695 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
699 if(returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
700 int receiverId = eMeta->receiveMap()[slotId];
701 QVariantList returnParams;
702 returnParams << className
704 << QByteArray(receiver->metaObject()->method(receiverId).signature());
705 if(eMeta->argTypes(receiverId).count() > 1)
706 returnParams << params;
707 returnParams << returnValue;
708 sender->dispatchSignal(Sync, returnParams);
711 // send emit update signal
712 invokeSlot(receiver, eMeta->updatedRemotelyId());
715 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
716 if(params.count() != 2) {
717 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
722 QByteArray className(params[0].toByteArray());
723 QString objectName(params[1].toString());
725 if(!_syncSlave.contains(className)) {
726 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
731 if(!_syncSlave[className].contains(objectName)) {
732 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
733 << className << objectName;
737 SyncableObject *obj = _syncSlave[className][objectName];
739 QVariantList params_;
744 sender->dispatchSignal(InitData, params_);
747 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
749 if(params.count() != 3) {
750 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
755 QByteArray className(params[0].toByteArray());
756 QString objectName(params[1].toString());
757 QVariantMap propertyMap(params[2].toMap());
759 if(!_syncSlave.contains(className)) {
760 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
765 if(!_syncSlave[className].contains(objectName)) {
766 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
767 << className << objectName;
771 SyncableObject *obj = _syncSlave[className][objectName];
772 setInitData(obj, propertyMap);
775 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
776 void SignalProxy::handleSignal(const QVariantList &data) {
777 QVariantList params = data;
778 QByteArray funcName = params.takeFirst().toByteArray();
782 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
783 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
784 receiver = (*slot).first;
785 methodId = (*slot).second;
786 if(!invokeSlot(receiver, methodId, params)) {
787 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
788 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
794 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
795 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
796 const QList<int> args = eMeta->argTypes(methodId);
797 const int numArgs = params.count() < args.count()
801 if(eMeta->minArgCount(methodId) > params.count()) {
802 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
806 void *_a[] = {0, // return type...
807 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
810 // check for argument compatibility and build params array
811 for(int i = 0; i < numArgs; i++) {
812 if(!params[i].isValid()) {
813 qWarning() << "SignalProxy::invokeSlot(): received invalid data for argument number" << i << "of method" << QString("%1::%2()").arg(receiver->metaObject()->className()).arg(receiver->metaObject()->method(methodId).signature());
814 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
817 if(args[i] != QMetaType::type(params[i].typeName())) {
818 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
821 _a[i+1] = const_cast<void *>(params[i].constData());
824 if(returnValue.type() != QVariant::Invalid)
825 _a[0] = const_cast<void *>(returnValue.constData());
827 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
828 ? Qt::DirectConnection
829 : Qt::QueuedConnection;
831 if (type == Qt::DirectConnection) {
832 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
834 qWarning() << "Queued Connections are not implemented yet";
835 // note to self: qmetaobject.cpp:990 ff
841 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
843 return invokeSlot(receiver, methodId, params, ret);
846 void SignalProxy::dataAvailable() {
847 // yet again. it's a private slot. no need for checks.
848 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
849 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
850 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
852 while(peer->readData(var))
853 receivePackedFunc(peer, var);
856 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
857 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
858 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
859 qWarning("SignalProxy: Can't call write on a closed device");
864 QDataStream out(&block, QIODevice::WriteOnly);
865 out.setVersion(QDataStream::Qt_4_2);
870 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
872 itemStream.setVersion(QDataStream::Qt_4_2);
875 rawItem = qCompress(rawItem);
882 out.device()->seek(0);
883 out << (quint32)(block.size() - sizeof(quint32));
888 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
890 in.setVersion(QDataStream::Qt_4_2);
893 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
897 if(blockSize > 1 << 22) {
898 disconnectDevice(dev, tr("Client tried to send package larger than max package size!"));
903 disconnectDevice(dev, tr("Client tried to send 0 byte package!"));
907 if(dev->bytesAvailable() < blockSize)
916 int nbytes = rawItem.size();
918 const char *data = rawItem.constData();
919 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
920 disconnectDevice(dev, tr("Client sent corrupted compressed data!"));
925 rawItem = qUncompress(rawItem);
927 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
928 itemStream.setVersion(QDataStream::Qt_4_2);
934 if(!item.isValid()) {
935 disconnectDevice(dev, tr("Client sent corrupt data: unable to load QVariant!"));
942 void SignalProxy::requestInit(SyncableObject *obj) {
943 if(proxyMode() == Server || obj->isInitialized())
947 params << obj->syncMetaObject()->className()
948 << obj->objectName();
949 dispatchSignal(InitRequest, params);
952 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
953 return obj->toVariantMap();
956 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
957 if(obj->isInitialized())
959 obj->fromVariantMap(properties);
960 obj->setInitialized();
961 emit objectInitialized(obj);
962 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
965 void SignalProxy::sendHeartBeat() {
966 QVariantList heartBeatParams;
967 heartBeatParams << QTime::currentTime();
968 PeerHash::iterator peer = _peers.begin();
969 while(peer != _peers.end()) {
970 if((*peer)->type() == AbstractPeer::IODevicePeer) {
971 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
972 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
973 if(ioPeer->sentHeartBeats > 0) {
974 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
976 if(ioPeer->sentHeartBeats > 1) {
977 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
978 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
981 ioPeer->sentHeartBeats++;
988 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
989 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
992 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
993 if(peer->type() != AbstractPeer::IODevicePeer) {
994 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
998 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
999 ioPeer->sentHeartBeats = 0;
1001 if(params.isEmpty()) {
1002 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
1006 QTime sendTime = params[0].value<QTime>();
1007 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1010 void SignalProxy::customEvent(QEvent *event) {
1011 switch(event->type()) {
1014 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1015 receivePeerSignal(e->sender, e->requestType, e->params);
1021 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1022 removePeer(e->peer);
1030 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1031 if(!reason.isEmpty())
1032 qWarning() << qPrintable(reason);
1033 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1035 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1039 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1041 if(proxyMode() == Client) {
1042 emit lagUpdated(lag);
1046 void SignalProxy::dumpProxyStats() {
1048 if(proxyMode() == Server)
1054 foreach(SignalRelay *relay, _relayHash.values())
1055 sigCount += relay->sigCount();
1058 foreach(ObjectId oid, _syncSlave.values())
1059 slaveCount += oid.count();
1062 qDebug() << " Proxy Mode:" << mode;
1063 qDebug() << "attached sending Objects:" << _relayHash.count();
1064 qDebug() << " number of Signals:" << sigCount;
1065 qDebug() << " attached Slots:" << _attachedSlots.count();
1066 qDebug() << " number of synced Slaves:" << slaveCount;
1067 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1070 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1071 const QMetaObject *meta = object->metaObject();
1072 ExtendedMetaObject *eMeta = extendedMetaObject(object);
1073 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1075 QHash<QByteArray, int> syncMap_ = eMeta->syncMap();
1076 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1077 while(iter != syncMap_.constEnd()) {
1078 qDebug() << qPrintable(QString("%1 --> %2 %3").arg(QString(iter.key()), 40).arg(iter.value()).arg(QString(meta->method(iter.value()).signature())));
1083 void SignalProxy::updateSecureState() {
1084 bool wasSecure = _secure;
1086 _secure = !_peers.isEmpty();
1087 PeerHash::const_iterator peerIter;
1088 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1089 _secure &= (*peerIter)->isSecure();
1092 if(wasSecure != _secure)
1093 emit secureStateChanged(_secure);
1097 // ==================================================
1098 // ExtendedMetaObject
1099 // ==================================================
1100 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta)
1102 _updatedRemotelyId(-1)
1106 const QList<int> &SignalProxy::ExtendedMetaObject::argTypes(int methodId) {
1107 if(!_argTypes.contains(methodId)) {
1108 QList<QByteArray> paramTypes = _meta->method(methodId).parameterTypes();
1109 QList<int> argTypes;
1110 for(int i = 0; i < paramTypes.count(); i++) {
1111 argTypes.append(QMetaType::type(paramTypes[i]));
1113 _argTypes[methodId] = argTypes;
1115 return _argTypes[methodId];
1118 const int &SignalProxy::ExtendedMetaObject::returnType(int methodId) {
1119 if(!_returnType.contains(methodId)) {
1120 _returnType[methodId] = QMetaType::type(_meta->method(methodId).typeName());
1122 return _returnType[methodId];
1125 const int &SignalProxy::ExtendedMetaObject::minArgCount(int methodId) {
1126 if(!_minArgCount.contains(methodId)) {
1127 QString signature(_meta->method(methodId).signature());
1128 _minArgCount[methodId] = _meta->method(methodId).parameterTypes().count() - signature.count("=");
1130 return _minArgCount[methodId];
1133 const QByteArray &SignalProxy::ExtendedMetaObject::methodName(int methodId) {
1134 if(!_methodNames.contains(methodId)) {
1135 _methodNames[methodId] = methodName(_meta->method(methodId));
1137 return _methodNames[methodId];
1140 const QHash<QByteArray, int> &SignalProxy::ExtendedMetaObject::syncMap() {
1141 if(_syncMap.isEmpty()) {
1142 QHash<QByteArray, int> syncMap;
1144 QList<int> slotIndexes;
1145 for(int i = 0; i < _meta->methodCount(); i++) {
1146 if(_meta->method(i).methodType() == QMetaMethod::Slot)
1150 // we're faking sync pairs for sync replies
1151 // --> we deliver to every slot starting with "receive"
1152 QByteArray slotSignature;
1153 QList<int>::iterator slotIter = slotIndexes.begin();
1154 while(slotIter != slotIndexes.end()) {
1155 slotSignature = QByteArray(_meta->method(*slotIter).signature());
1156 if(slotSignature.startsWith("receive")) {
1157 syncMap[slotSignature] = *slotIter;
1158 slotIndexes.erase(slotIter);
1164 // find the proper sig -> slot matches
1165 QMetaMethod signal, slot;
1167 for(int signalIdx = 0; signalIdx < _meta->methodCount(); signalIdx++) {
1168 signal = _meta->method(signalIdx);
1169 if(signal.methodType() != QMetaMethod::Signal)
1173 foreach(int slotIdx, slotIndexes) {
1174 slot = _meta->method(slotIdx);
1175 if(methodsMatch(signal, slot)) {
1180 if(matchIdx != -1) {
1181 slotIndexes.removeAll(matchIdx);
1182 syncMap[QByteArray(signal.signature())] = matchIdx;
1190 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap() {
1191 if(_receiveMap.isEmpty()) {
1192 QHash<int, int> receiveMap;
1194 QMetaMethod requestSlot;
1195 QByteArray returnTypeName;
1196 QByteArray signature;
1197 QByteArray methodName;
1201 const int methodCount = _meta->methodCount();
1202 for(int i = 0; i < methodCount; i++) {
1203 requestSlot = _meta->method(i);
1204 if(requestSlot.methodType() != QMetaMethod::Slot)
1207 returnTypeName = requestSlot.typeName();
1208 if(QMetaType::Void == (QMetaType::Type)returnType(i))
1211 signature = QByteArray(requestSlot.signature());
1212 if(!signature.startsWith("request"))
1215 paramsPos = signature.indexOf('(');
1219 methodName = signature.left(paramsPos);
1220 params = signature.mid(paramsPos);
1222 methodName = methodName.replace("request", "receive");
1223 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1225 signature = QMetaObject::normalizedSignature(methodName + params);
1226 receiverId = _meta->indexOfSlot(signature);
1228 if(receiverId == -1) {
1229 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1230 receiverId = _meta->indexOfSlot(signature);
1233 if(receiverId != -1)
1234 receiveMap[i] = receiverId;
1240 int SignalProxy::ExtendedMetaObject::updatedRemotelyId() {
1241 if(_updatedRemotelyId == -1) {
1242 _updatedRemotelyId = _meta->indexOfSignal("updatedRemotely()");
1244 return _updatedRemotelyId;
1247 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method) {
1248 QByteArray sig(method.signature());
1249 return sig.left(sig.indexOf("("));
1252 bool SignalProxy::ExtendedMetaObject::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) {
1253 // if we don't even have the same basename it's a sure NO
1254 QString baseName = methodBaseName(signal);
1255 if(baseName != methodBaseName(slot))
1258 // are the signatures compatible?
1259 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1262 // we take an educated guess if the signals and slots match
1263 QString signalsuffix = methodName(signal);
1264 QString slotprefix = methodName(slot);
1265 if(!baseName.isEmpty()) {
1266 signalsuffix = signalsuffix.mid(baseName.count()).toLower();
1267 slotprefix = slotprefix.left(slotprefix.count() - baseName.count()).toLower();
1270 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1271 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1275 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method) {
1276 QString methodname = QString(method.signature()).section("(", 0, 0);
1278 // determine where we have to chop:
1280 if(method.methodType() == QMetaMethod::Slot) {
1281 // we take evertyhing from the first uppercase char if it's slot
1282 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1283 if(upperCharPos == -1)
1285 methodname = methodname.mid(upperCharPos);
1287 // and if it's a signal we discard everything from the last uppercase char
1288 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1289 if(upperCharPos == -1)
1291 methodname = methodname.left(upperCharPos);
1294 methodname[0] = methodname[0].toUpper();