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 SignalProxy::Relay : 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 Relay(SignalProxy *parent) : QObject(parent), _proxy(parent) {}
74 inline SignalProxy *proxy() const { return _proxy; }
80 class SignalProxy::SyncRelay : public SignalProxy::Relay {
82 SyncRelay(SignalProxy::ExtendedMetaObject *eMeta, SignalProxy *parent);
84 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
86 void synchronize(SyncableObject *object);
88 int signalCount() const { return _signalCount; }
91 ExtendedMetaObject *_eMeta;
96 class SignalProxy::SignalRelay : public SignalProxy::Relay {
98 SignalRelay(SignalProxy *parent) : Relay(parent) {}
100 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
102 void attachSignal(QObject *sender, int signalId, const QByteArray &funcName);
103 void detachSignal(QObject *sender, int signalId = -1);
109 QByteArray signature;
110 Signal(QObject *sender, int sigId, const QByteArray &signature) : sender(sender), signalId(sigId), signature(signature) {}
111 Signal() : sender(0), signalId(-1) {}
114 QHash<int, Signal> _slots;
117 SignalProxy::SyncRelay::SyncRelay(SignalProxy::ExtendedMetaObject *eMeta, SignalProxy *parent)
121 QByteArray signature;
122 for(int i = 0; i < eMeta->metaObject()->methodCount(); i++ ) {
123 signature = eMeta->metaObject()->method(i).signature();
124 if(!eMeta->syncMap().contains(signature))
127 if((proxy()->proxyMode() == SignalProxy::Server && !signature.contains("Requested")) ||
128 (proxy()->proxyMode() == SignalProxy::Client && signature.contains("Requested"))) {
132 _signalCount = _signalIds.count();
135 void SignalProxy::SyncRelay::synchronize(SyncableObject *object) {
136 if(object->syncMetaObject() != _eMeta->metaObject()) {
137 qWarning() << Q_FUNC_INFO << "can't use SyncRelay of class" << _eMeta->metaObject()->className()
138 << "for SyncableObject" << object << "with syncMetaObject of class" << object->syncMetaObject()->className();
142 QSet<int>::const_iterator sigIter = _signalIds.constBegin();
143 while(sigIter != _signalIds.constEnd()) {
144 QMetaObject::connect(object, *sigIter, this, QObject::staticMetaObject.methodCount() + *sigIter);
149 int SignalProxy::SyncRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
150 _id = QObject::qt_metacall(_c, _id, _a);
154 if(_c == QMetaObject::InvokeMetaMethod) {
155 if(!_signalIds.contains(_id)) {
156 qWarning() << Q_FUNC_INFO << "_id" << _id << "is not a valid SyncMethod!";
162 params << _eMeta->metaObject()->className()
163 << sender()->objectName()
164 << _eMeta->metaObject()->method(_id).signature();
166 const QList<int> &argTypes = _eMeta->argTypes(_id);
167 for(int i = 0; i < argTypes.size(); i++) {
168 if(argTypes[i] == 0) {
169 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(_eMeta->metaObject()->className()).arg(_eMeta->metaObject()->method(_id).signature());
170 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
173 params << QVariant(argTypes[i], _a[i+1]);
176 proxy()->dispatchSignal(SignalProxy::Sync, params);
183 void SignalProxy::SignalRelay::attachSignal(QObject *sender, int signalId, const QByteArray &funcName) {
184 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
185 // all connected methodIds are offset by the standard methodCount of QObject
187 for(int i = 0;; i++) {
188 if(!_slots.contains(i)) {
195 if(!funcName.isEmpty()) {
196 fn = QMetaObject::normalizedSignature(funcName);
199 fn += sender->metaObject()->method(signalId).signature();
202 _slots[slotId] = Signal(sender, signalId, fn);
204 QMetaObject::connect(sender, signalId, this, QObject::staticMetaObject.methodCount() + slotId);
207 void SignalProxy::SignalRelay::detachSignal(QObject *sender, int signalId) {
208 QHash<int, Signal>::iterator slotIter = _slots.begin();
209 while(slotIter != _slots.end()) {
210 if(slotIter->sender == sender && (signalId == -1 || slotIter->signalId == signalId)) {
211 slotIter = _slots.erase(slotIter);
220 int SignalProxy::SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
221 _id = QObject::qt_metacall(_c, _id, _a);
225 if(_c == QMetaObject::InvokeMetaMethod) {
226 if(_slots.contains(_id)) {
227 QObject *caller = sender();
229 SignalProxy::ExtendedMetaObject *eMeta = proxy()->extendedMetaObject(caller->metaObject());
232 const Signal &signal = _slots[_id];
235 params << signal.signature;
237 const QList<int> &argTypes = eMeta->argTypes(signal.signalId);
238 for(int i = 0; i < argTypes.size(); i++) {
239 if(argTypes[i] == 0) {
240 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());
241 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
244 params << QVariant(argTypes[i], _a[i+1]);
247 proxy()->dispatchSignal(SignalProxy::RpcCall, params);
249 _id -= _slots.count();
254 // ==================================================
256 // ==================================================
257 void SignalProxy::IODevicePeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
258 QVariantList packedFunc;
259 packedFunc << (qint16)requestType
261 dispatchPackedFunc(QVariant(packedFunc));
264 bool SignalProxy::IODevicePeer::isSecure() const {
266 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(_device);
268 return sslSocket->isEncrypted() || sslSocket->localAddress() == QHostAddress::LocalHost || sslSocket->localAddress() == QHostAddress::LocalHostIPv6;
271 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
273 return socket->localAddress() == QHostAddress::LocalHost || socket->localAddress() == QHostAddress::LocalHostIPv6;
278 QString SignalProxy::IODevicePeer::address() const {
279 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
281 return socket->peerAddress().toString();
286 void SignalProxy::SignalProxyPeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
287 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
288 ? Qt::DirectConnection
289 : Qt::QueuedConnection;
291 if(type == Qt::DirectConnection) {
292 receiver->receivePeerSignal(sender, requestType, params);
294 QCoreApplication::postEvent(receiver, new PeerSignalEvent(sender, requestType, params));
298 // ==================================================
300 // ==================================================
301 SignalProxy::SignalProxy(QObject* parent)
304 setProxyMode(Client);
308 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
315 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
323 SignalProxy::~SignalProxy() {
327 void SignalProxy::setProxyMode(ProxyMode mode) {
328 PeerHash::iterator peer = _peers.begin();
329 while(peer != _peers.end()) {
330 if((*peer)->type() != AbstractPeer::IODevicePeer) {
331 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
332 if(ioPeer->isOpen()) {
333 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
337 if((*peer)->type() != AbstractPeer::SignalProxyPeer) {
338 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
351 void SignalProxy::init() {
352 _signalRelay = new SignalRelay(this);
353 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
354 _heartBeatTimer.start(30 * 1000);
359 void SignalProxy::initServer() {
362 void SignalProxy::initClient() {
363 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
366 bool SignalProxy::addPeer(QIODevice* iodev) {
370 if(_peers.contains(iodev))
373 if(proxyMode() == Client && !_peers.isEmpty()) {
374 qWarning("SignalProxy: only one peer allowed in client mode!");
378 if(!iodev->isOpen()) {
379 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
383 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
384 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
387 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
389 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
394 iodev->setParent(this);
396 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
398 if(_peers.count() == 1)
405 bool SignalProxy::addPeer(SignalProxy* proxy) {
409 if(proxyMode() == proxy->proxyMode()) {
410 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
414 if(_peers.contains(proxy)) {
418 if(proxyMode() == Client && !_peers.isEmpty()) {
419 qWarning("SignalProxy: only one peer allowed in client mode!");
423 _peers[proxy] = new SignalProxyPeer(this, proxy);
424 proxy->addPeer(this);
426 if(_peers.count() == 1)
433 void SignalProxy::removeAllPeers() {
434 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
435 // wee need to copy that list since we modify it in the loop
436 QList<QObject *> peers = _peers.keys();
437 foreach(QObject *peer, peers) {
442 void SignalProxy::removePeer(QObject* dev) {
443 if(_peers.isEmpty()) {
444 qWarning() << "SignalProxy::removePeer(): No peers in use!";
449 if(!_peers.contains(dev)) {
450 qWarning() << "SignalProxy: unknown Peer" << dev;
454 AbstractPeer *peer = _peers[dev];
457 disconnect(dev, 0, this, 0);
458 if(peer->type() == AbstractPeer::IODevicePeer)
459 emit peerRemoved(static_cast<QIODevice *>(dev));
461 if(peer->type() == AbstractPeer::SignalProxyPeer) {
462 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
463 if(proxy->_peers.contains(this))
464 proxy->removePeer(this);
467 if(dev->parent() == this)
478 void SignalProxy::removePeerBySender() {
479 removePeer(sender());
482 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
483 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
484 const QMetaObject *meta = syncObject->syncMetaObject();
485 const QByteArray className(meta->className());
486 objectRenamed(className, newname, oldname);
488 if(proxyMode() == Client)
492 params << "__objectRenamed__" << className << newname << oldname;
493 dispatchSignal(RpcCall, params);
496 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
497 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
498 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
503 const QMetaObject *SignalProxy::metaObject(const QObject *obj) {
504 if(const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
505 return syncObject->syncMetaObject();
507 return obj->metaObject();
510 SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QMetaObject *meta) const {
511 if(_extendedMetaObjects.contains(meta))
512 return _extendedMetaObjects[meta];
517 SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta) {
518 if(!_extendedMetaObjects.contains(meta)) {
519 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta);
521 return _extendedMetaObjects[meta];
524 bool SignalProxy::attachSignal(QObject *sender, const char* signal, const QByteArray& sigName) {
525 const QMetaObject* meta = sender->metaObject();
526 QByteArray sig(meta->normalizedSignature(signal).mid(1));
527 int methodId = meta->indexOfMethod(sig.constData());
528 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
529 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
533 createExtendedMetaObject(meta);
534 _signalRelay->attachSignal(sender, methodId, sigName);
536 disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
537 connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
541 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
542 const QMetaObject* meta = recv->metaObject();
543 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
544 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
545 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
549 createExtendedMetaObject(meta);
551 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
552 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
554 disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
555 connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
559 void SignalProxy::synchronize(SyncableObject *obj) {
560 ExtendedMetaObject *eMeta = createExtendedMetaObject(obj);
563 if(!_syncRelays.contains(obj->syncMetaObject())) {
564 _syncRelays[obj->syncMetaObject()] = new SyncRelay(eMeta, this);
566 relay = _syncRelays[obj->syncMetaObject()];
568 relay->synchronize(obj);
570 // attaching as slave to receive sync Calls
571 QByteArray className(obj->syncMetaObject()->className());
572 _syncSlave[className][obj->objectName()] = obj;
573 disconnect(obj, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
574 connect(obj, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
576 if(proxyMode() == Server) {
577 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
578 obj->setInitialized();
579 emit objectInitialized(obj);
581 if(obj->isInitialized())
582 emit objectInitialized(obj);
588 void SignalProxy::detachObject(QObject *obj) {
594 void SignalProxy::detachSignals(QObject *sender) {
595 _signalRelay->detachSignal(sender);
598 void SignalProxy::detachSlots(QObject* receiver) {
599 SlotHash::iterator slotIter = _attachedSlots.begin();
600 while(slotIter != _attachedSlots.end()) {
601 if(slotIter.value().first == receiver) {
602 slotIter = _attachedSlots.erase(slotIter);
608 void SignalProxy::stopSync(QObject *obj) {
609 SyncableObject *syncableObject = qobject_cast<SyncableObject *>(obj);
610 if(syncableObject && _syncRelays.contains(syncableObject->syncMetaObject())) {
611 QObject::disconnect(syncableObject, 0, _syncRelays[syncableObject->syncMetaObject()], 0);
614 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
615 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
616 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
617 while(classIter != _syncSlave.end()) {
618 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
619 classIter->remove(obj->objectName());
626 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
627 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
628 PeerHash::iterator peer = _peers.begin();
629 while(peer != _peers.end()) {
630 switch((*peer)->type()) {
631 case AbstractPeer::IODevicePeer:
633 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
635 ioPeer->dispatchPackedFunc(packedFunc);
637 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
640 case AbstractPeer::SignalProxyPeer:
641 (*peer)->dispatchSignal(requestType, params);
644 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
650 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
651 QVariantList params(packedFunc.toList());
653 if(params.isEmpty()) {
654 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
658 RequestType requestType = (RequestType)params.takeFirst().value<int>();
659 receivePeerSignal(sender, requestType, params);
662 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
663 switch(requestType) {
666 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
668 handleSignal(params);
669 //handleSignal(params.takeFirst().toByteArray(), params);
673 handleSync(sender, params);
677 handleInitRequest(sender, params);
681 handleInitData(sender, params);
685 receiveHeartBeat(sender, params);
689 receiveHeartBeatReply(sender, params);
693 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
697 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
698 if(!_peers.contains(sender)) {
699 // 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.
700 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
703 receivePeerSignal(_peers[sender], requestType, params);
706 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
707 if(params.count() < 3) {
708 qWarning() << "received invalid Sync call" << params;
712 QByteArray className = params.takeFirst().toByteArray();
713 QString objectName = params.takeFirst().toString();
714 QByteArray signal = params.takeFirst().toByteArray();
716 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
717 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
722 SyncableObject *receiver = _syncSlave[className][objectName];
723 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
724 if(!eMeta->syncMap().contains(signal)) {
725 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
730 int slotId = eMeta->syncMap()[signal];
732 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
733 if(!invokeSlot(receiver, slotId, params, returnValue)) {
734 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
738 if(returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
739 int receiverId = eMeta->receiveMap()[slotId];
740 QVariantList returnParams;
741 returnParams << className
743 << QByteArray(receiver->metaObject()->method(receiverId).signature());
744 if(eMeta->argTypes(receiverId).count() > 1)
745 returnParams << params;
746 returnParams << returnValue;
747 sender->dispatchSignal(Sync, returnParams);
750 // send emit update signal
751 invokeSlot(receiver, eMeta->updatedRemotelyId());
754 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
755 if(params.count() != 2) {
756 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
761 QByteArray className(params[0].toByteArray());
762 QString objectName(params[1].toString());
764 if(!_syncSlave.contains(className)) {
765 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
770 if(!_syncSlave[className].contains(objectName)) {
771 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
772 << className << objectName;
776 SyncableObject *obj = _syncSlave[className][objectName];
778 QVariantList params_;
783 sender->dispatchSignal(InitData, params_);
786 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
788 if(params.count() != 3) {
789 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
794 QByteArray className(params[0].toByteArray());
795 QString objectName(params[1].toString());
796 QVariantMap propertyMap(params[2].toMap());
798 if(!_syncSlave.contains(className)) {
799 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
804 if(!_syncSlave[className].contains(objectName)) {
805 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
806 << className << objectName;
810 SyncableObject *obj = _syncSlave[className][objectName];
811 setInitData(obj, propertyMap);
814 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
815 void SignalProxy::handleSignal(const QVariantList &data) {
816 QVariantList params = data;
817 QByteArray funcName = params.takeFirst().toByteArray();
821 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
822 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
823 receiver = (*slot).first;
824 methodId = (*slot).second;
825 if(!invokeSlot(receiver, methodId, params)) {
826 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
827 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
833 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
834 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
835 const QList<int> args = eMeta->argTypes(methodId);
836 const int numArgs = params.count() < args.count()
840 if(eMeta->minArgCount(methodId) > params.count()) {
841 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
845 void *_a[] = {0, // return type...
846 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
849 // check for argument compatibility and build params array
850 for(int i = 0; i < numArgs; i++) {
851 if(!params[i].isValid()) {
852 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());
853 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
856 if(args[i] != QMetaType::type(params[i].typeName())) {
857 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
860 _a[i+1] = const_cast<void *>(params[i].constData());
863 if(returnValue.type() != QVariant::Invalid)
864 _a[0] = const_cast<void *>(returnValue.constData());
866 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
867 ? Qt::DirectConnection
868 : Qt::QueuedConnection;
870 if(type == Qt::DirectConnection) {
871 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
873 qWarning() << "Queued Connections are not implemented yet";
874 // note to self: qmetaobject.cpp:990 ff
880 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
882 return invokeSlot(receiver, methodId, params, ret);
885 void SignalProxy::dataAvailable() {
886 // yet again. it's a private slot. no need for checks.
887 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
888 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
889 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
891 while(peer->readData(var))
892 receivePackedFunc(peer, var);
895 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
896 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
897 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
898 qWarning("SignalProxy: Can't call write on a closed device");
903 QDataStream out(&block, QIODevice::WriteOnly);
904 out.setVersion(QDataStream::Qt_4_2);
909 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
911 itemStream.setVersion(QDataStream::Qt_4_2);
914 rawItem = qCompress(rawItem);
921 out.device()->seek(0);
922 out << (quint32)(block.size() - sizeof(quint32));
927 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
929 in.setVersion(QDataStream::Qt_4_2);
932 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
936 if(blockSize > 1 << 22) {
937 disconnectDevice(dev, tr("Client tried to send package larger than max package size!"));
942 disconnectDevice(dev, tr("Client tried to send 0 byte package!"));
946 if(dev->bytesAvailable() < blockSize)
955 int nbytes = rawItem.size();
957 const char *data = rawItem.constData();
958 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
959 disconnectDevice(dev, tr("Client sent corrupted compressed data!"));
964 rawItem = qUncompress(rawItem);
966 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
967 itemStream.setVersion(QDataStream::Qt_4_2);
973 if(!item.isValid()) {
974 disconnectDevice(dev, tr("Client sent corrupt data: unable to load QVariant!"));
981 void SignalProxy::requestInit(SyncableObject *obj) {
982 if(proxyMode() == Server || obj->isInitialized())
986 params << obj->syncMetaObject()->className()
987 << obj->objectName();
988 dispatchSignal(InitRequest, params);
991 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
992 return obj->toVariantMap();
995 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
996 if(obj->isInitialized())
998 obj->fromVariantMap(properties);
999 obj->setInitialized();
1000 emit objectInitialized(obj);
1001 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
1004 void SignalProxy::sendHeartBeat() {
1005 QVariantList heartBeatParams;
1006 heartBeatParams << QTime::currentTime();
1007 PeerHash::iterator peer = _peers.begin();
1008 while(peer != _peers.end()) {
1009 if((*peer)->type() == AbstractPeer::IODevicePeer) {
1010 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
1011 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
1012 if(ioPeer->sentHeartBeats > 0) {
1013 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
1015 if(ioPeer->sentHeartBeats > 1) {
1016 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
1017 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
1020 ioPeer->sentHeartBeats++;
1027 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
1028 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
1031 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
1032 if(peer->type() != AbstractPeer::IODevicePeer) {
1033 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
1037 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
1038 ioPeer->sentHeartBeats = 0;
1040 if(params.isEmpty()) {
1041 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
1045 QTime sendTime = params[0].value<QTime>();
1046 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1049 void SignalProxy::customEvent(QEvent *event) {
1050 switch(event->type()) {
1053 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1054 receivePeerSignal(e->sender, e->requestType, e->params);
1060 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1061 removePeer(e->peer);
1069 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1070 if(!reason.isEmpty())
1071 qWarning() << qPrintable(reason);
1072 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1074 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1078 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1080 if(proxyMode() == Client) {
1081 emit lagUpdated(lag);
1085 void SignalProxy::dumpProxyStats() {
1087 if(proxyMode() == Server)
1093 foreach(SyncRelay *relay, _syncRelays.values())
1094 sigCount += relay->signalCount();
1097 foreach(ObjectId oid, _syncSlave.values())
1098 slaveCount += oid.count();
1101 qDebug() << " Proxy Mode:" << mode;
1102 // qDebug() << "attached sending Objects:" << _relayHash.count();
1103 qDebug() << " number of Signals:" << sigCount;
1104 qDebug() << " attached Slots:" << _attachedSlots.count();
1105 qDebug() << " number of synced Slaves:" << slaveCount;
1106 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1109 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1110 const QMetaObject *meta = object->metaObject();
1111 ExtendedMetaObject *eMeta = extendedMetaObject(object);
1112 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1114 QHash<QByteArray, int> syncMap_ = eMeta->syncMap();
1115 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1116 while(iter != syncMap_.constEnd()) {
1117 qDebug() << qPrintable(QString("%1 --> %2 %3").arg(QString(iter.key()), 40).arg(iter.value()).arg(QString(meta->method(iter.value()).signature())));
1122 void SignalProxy::updateSecureState() {
1123 bool wasSecure = _secure;
1125 _secure = !_peers.isEmpty();
1126 PeerHash::const_iterator peerIter;
1127 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1128 _secure &= (*peerIter)->isSecure();
1131 if(wasSecure != _secure)
1132 emit secureStateChanged(_secure);
1136 // ==================================================
1137 // ExtendedMetaObject
1138 // ==================================================
1139 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta)
1141 _updatedRemotelyId(-1)
1145 const QList<int> &SignalProxy::ExtendedMetaObject::argTypes(int methodId) {
1146 if(!_argTypes.contains(methodId)) {
1147 QList<QByteArray> paramTypes = _meta->method(methodId).parameterTypes();
1148 QList<int> argTypes;
1149 for(int i = 0; i < paramTypes.count(); i++) {
1150 argTypes.append(QMetaType::type(paramTypes[i]));
1152 _argTypes[methodId] = argTypes;
1154 return _argTypes[methodId];
1157 const int &SignalProxy::ExtendedMetaObject::returnType(int methodId) {
1158 if(!_returnType.contains(methodId)) {
1159 _returnType[methodId] = QMetaType::type(_meta->method(methodId).typeName());
1161 return _returnType[methodId];
1164 const int &SignalProxy::ExtendedMetaObject::minArgCount(int methodId) {
1165 if(!_minArgCount.contains(methodId)) {
1166 QString signature(_meta->method(methodId).signature());
1167 _minArgCount[methodId] = _meta->method(methodId).parameterTypes().count() - signature.count("=");
1169 return _minArgCount[methodId];
1172 const QByteArray &SignalProxy::ExtendedMetaObject::methodName(int methodId) {
1173 if(!_methodNames.contains(methodId)) {
1174 _methodNames[methodId] = methodName(_meta->method(methodId));
1176 return _methodNames[methodId];
1179 const QHash<QByteArray, int> &SignalProxy::ExtendedMetaObject::syncMap() {
1180 if(_syncMap.isEmpty()) {
1181 QHash<QByteArray, int> syncMap;
1183 QList<int> slotIndexes;
1184 for(int i = 0; i < _meta->methodCount(); i++) {
1185 if(_meta->method(i).methodType() == QMetaMethod::Slot)
1189 // we're faking sync pairs for sync replies
1190 // --> we deliver to every slot starting with "receive"
1191 QByteArray slotSignature;
1192 QList<int>::iterator slotIter = slotIndexes.begin();
1193 while(slotIter != slotIndexes.end()) {
1194 slotSignature = QByteArray(_meta->method(*slotIter).signature());
1195 if(slotSignature.startsWith("receive")) {
1196 syncMap[slotSignature] = *slotIter;
1197 slotIter = slotIndexes.erase(slotIter);
1203 // find the proper sig -> slot matches
1204 QMetaMethod signal, slot;
1206 for(int signalIdx = 0; signalIdx < _meta->methodCount(); signalIdx++) {
1207 signal = _meta->method(signalIdx);
1208 if(signal.methodType() != QMetaMethod::Signal)
1212 foreach(int slotIdx, slotIndexes) {
1213 slot = _meta->method(slotIdx);
1214 if(methodsMatch(signal, slot)) {
1219 if(matchIdx != -1) {
1220 slotIndexes.removeAll(matchIdx);
1221 syncMap[QByteArray(signal.signature())] = matchIdx;
1229 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap() {
1230 if(_receiveMap.isEmpty()) {
1231 QHash<int, int> receiveMap;
1233 QMetaMethod requestSlot;
1234 QByteArray returnTypeName;
1235 QByteArray signature;
1236 QByteArray methodName;
1240 const int methodCount = _meta->methodCount();
1241 for(int i = 0; i < methodCount; i++) {
1242 requestSlot = _meta->method(i);
1243 if(requestSlot.methodType() != QMetaMethod::Slot)
1246 returnTypeName = requestSlot.typeName();
1247 if(QMetaType::Void == (QMetaType::Type)returnType(i))
1250 signature = QByteArray(requestSlot.signature());
1251 if(!signature.startsWith("request"))
1254 paramsPos = signature.indexOf('(');
1258 methodName = signature.left(paramsPos);
1259 params = signature.mid(paramsPos);
1261 methodName = methodName.replace("request", "receive");
1262 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1264 signature = QMetaObject::normalizedSignature(methodName + params);
1265 receiverId = _meta->indexOfSlot(signature);
1267 if(receiverId == -1) {
1268 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1269 receiverId = _meta->indexOfSlot(signature);
1272 if(receiverId != -1)
1273 receiveMap[i] = receiverId;
1275 _receiveMap = receiveMap;
1280 int SignalProxy::ExtendedMetaObject::updatedRemotelyId() {
1281 if(_updatedRemotelyId == -1) {
1282 _updatedRemotelyId = _meta->indexOfSignal("updatedRemotely()");
1284 return _updatedRemotelyId;
1287 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method) {
1288 QByteArray sig(method.signature());
1289 return sig.left(sig.indexOf("("));
1292 bool SignalProxy::ExtendedMetaObject::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) {
1293 // if we don't even have the same basename it's a sure NO
1294 QString baseName = methodBaseName(signal);
1295 if(baseName != methodBaseName(slot))
1298 // are the signatures compatible?
1299 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1302 // we take an educated guess if the signals and slots match
1303 QString signalsuffix = methodName(signal);
1304 QString slotprefix = methodName(slot);
1305 if(!baseName.isEmpty()) {
1306 signalsuffix = signalsuffix.mid(baseName.count()).toLower();
1307 slotprefix = slotprefix.left(slotprefix.count() - baseName.count()).toLower();
1310 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1311 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1315 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method) {
1316 QString methodname = QString(method.signature()).section("(", 0, 0);
1318 // determine where we have to chop:
1320 if(method.methodType() == QMetaMethod::Slot) {
1321 // we take evertyhing from the first uppercase char if it's slot
1322 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1323 if(upperCharPos == -1)
1325 methodname = methodname.mid(upperCharPos);
1327 // and if it's a signal we discard everything from the last uppercase char
1328 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1329 if(upperCharPos == -1)
1331 methodname = methodname.left(upperCharPos);
1334 methodname[0] = methodname[0].toUpper();