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>
39 #include <QCoreApplication>
41 #include "syncableobject.h"
44 // ==================================================
46 // ==================================================
47 class PeerSignalEvent : public QEvent {
49 PeerSignalEvent(SignalProxy *sender, SignalProxy::RequestType requestType, const QVariantList ¶ms) : QEvent(QEvent::Type(SignalProxy::PeerSignal)), sender(sender), requestType(requestType), params(params) {}
51 SignalProxy::RequestType requestType;
55 class RemovePeerEvent : public QEvent {
57 RemovePeerEvent(QObject *peer) : QEvent(QEvent::Type(SignalProxy::RemovePeer)), peer(peer) {}
61 // ==================================================
63 // ==================================================
64 class SignalRelay: public QObject {
65 /* Q_OBJECT is not necessary or even allowed, because we implement
66 qt_metacall ourselves (and don't use any other features of the meta
70 SignalRelay(SignalProxy* parent, QObject* source);
71 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
73 void attachSignal(int methodId, const QByteArray &func);
75 void setSynchronize(bool);
76 bool synchronize() const;
81 bool isSyncMethod(int i);
85 QMultiHash<int, QByteArray> sigNames;
89 SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
95 QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
98 int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
99 _id = QObject::qt_metacall(_c, _id, _a);
102 if(_c == QMetaObject::InvokeMetaMethod) {
103 if(sigNames.contains(_id) || synchronize()) {
104 const QList<int> &argTypes = proxy->argTypes(caller, _id);
106 int n = argTypes.size();
107 for(int i=0; i<n; i++) {
108 if(argTypes[i] == 0) {
109 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());
110 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
113 params.append(QVariant(argTypes[i], _a[i+1]));
115 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
116 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
117 proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params);
121 // dispatch Sync Signal if necessary
122 QByteArray signature(caller->metaObject()->method(_id).signature());
123 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
124 if(synchronize() && proxy->syncMap(syncObject).contains(signature)) {
125 //qDebug() << "__SYNC__ >>>"
126 // << caller->metaObject()->className()
127 // << caller->objectName()
130 // params.prepend(QVariant(_id));
131 params.prepend(signature);
132 params.prepend(syncObject->objectName());
133 params.prepend(syncObject->syncMetaObject()->className());
134 proxy->dispatchSignal(SignalProxy::Sync, params);
137 _id -= QObject::staticMetaObject.methodCount();
142 void SignalRelay::setSynchronize(bool sync) {
143 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
147 const QMetaObject *meta = syncObject->syncMetaObject();
150 for(int i = 0; i < meta->methodCount(); i++ ) {
152 QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
154 } else if (_sync && !sync) {
156 for(int i = 0; i < meta->methodCount(); i++ ) {
158 QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
164 bool SignalRelay::isSyncMethod(int i) {
165 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
169 QByteArray signature = syncObject->syncMetaObject()->method(i).signature();
170 if(!proxy->syncMap(syncObject).contains(signature))
173 if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested"))
176 if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested"))
182 bool SignalRelay::synchronize() const {
186 int SignalRelay::sigCount() const {
187 // only for debuging purpose
188 return sigNames.count();
191 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
192 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
193 // all connected methodIds are offset by the standard methodCount of QObject
194 if(!sigNames.contains(methodId))
195 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
198 if(!func.isEmpty()) {
199 fn = QMetaObject::normalizedSignature(func);
201 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
203 sigNames.insert(methodId, fn);
206 // ==================================================
208 // ==================================================
209 void SignalProxy::IODevicePeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
210 QVariantList packedFunc;
211 packedFunc << (qint16)requestType
213 dispatchPackedFunc(QVariant(packedFunc));
216 bool SignalProxy::IODevicePeer::isSecure() const {
217 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(_device);
219 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()));
338 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
340 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
344 iodev->setParent(this);
346 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
348 if(_peers.count() == 1)
355 bool SignalProxy::addPeer(SignalProxy* proxy) {
359 if(proxyMode() == proxy->proxyMode()) {
360 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
364 if(_peers.contains(proxy)) {
368 if(proxyMode() == Client && !_peers.isEmpty()) {
369 qWarning("SignalProxy: only one peer allowed in client mode!");
373 _peers[proxy] = new SignalProxyPeer(this, proxy);
374 proxy->addPeer(this);
376 if(_peers.count() == 1)
383 void SignalProxy::removeAllPeers() {
384 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
385 // wee need to copy that list since we modify it in the loop
386 QList<QObject *> peers = _peers.keys();
387 foreach(QObject *peer, peers) {
392 void SignalProxy::removePeer(QObject* dev) {
393 if(_peers.isEmpty()) {
394 qWarning() << "SignalProxy::removePeer(): No peers in use!";
399 if(!_peers.contains(dev)) {
400 qWarning() << "SignalProxy: unknown Peer" << dev;
404 AbstractPeer *peer = _peers[dev];
407 disconnect(dev, 0, this, 0);
408 if(peer->type() == AbstractPeer::IODevicePeer)
409 emit peerRemoved(static_cast<QIODevice *>(dev));
411 if(peer->type() == AbstractPeer::SignalProxyPeer) {
412 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
413 if(proxy->_peers.contains(this))
414 proxy->removePeer(this);
417 if(dev->parent() == this)
428 void SignalProxy::removePeerBySender() {
429 removePeer(sender());
432 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
433 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
434 const QMetaObject *meta = syncObject->syncMetaObject();
435 const QByteArray className(meta->className());
436 objectRenamed(className, newname, oldname);
438 if(proxyMode() == Client)
442 params << "__objectRenamed__" << className << newname << oldname;
443 dispatchSignal(RpcCall, params);
446 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
447 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
448 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
453 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
454 const QMetaObject *meta = metaObject(obj);
455 QList<QByteArray> p = meta->method(methodId).parameterTypes();
458 for(int i=0; i<ct; i++)
459 argTypes.append(QMetaType::type(p.value(i)));
461 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
462 _classInfo[meta]->argTypes[methodId] = argTypes;
465 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
466 const QMetaObject *meta = metaObject(obj);
467 Q_ASSERT(_classInfo.contains(meta));
468 if(!_classInfo[meta]->argTypes.contains(methodId))
469 setArgTypes(obj, methodId);
470 return _classInfo[meta]->argTypes[methodId];
473 void SignalProxy::setReturnType(QObject *obj, int methodId) {
474 const QMetaObject *meta = metaObject(obj);
475 int returnType = QMetaType::type(meta->method(methodId).typeName());
477 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
478 _classInfo[meta]->returnType[methodId] = returnType;
481 const int &SignalProxy::returnType(QObject *obj, int methodId) {
482 const QMetaObject *meta = metaObject(obj);
483 Q_ASSERT(_classInfo.contains(meta));
484 if(!_classInfo[meta]->returnType.contains(methodId))
485 setReturnType(obj, methodId);
486 return _classInfo[meta]->returnType[methodId];
489 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
490 const QMetaObject *meta = metaObject(obj);
491 QString signature(meta->method(methodId).signature());
492 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
493 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
494 _classInfo[meta]->minArgCount[methodId] = minCount;
497 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
498 const QMetaObject *meta = metaObject(obj);
499 Q_ASSERT(_classInfo.contains(meta));
500 if(!_classInfo[meta]->minArgCount.contains(methodId))
501 setMinArgCount(obj, methodId);
502 return _classInfo[meta]->minArgCount[methodId];
505 void SignalProxy::setMethodName(QObject *obj, int methodId) {
506 const QMetaObject *meta = metaObject(obj);
507 QByteArray method(::methodName(meta->method(methodId)));
508 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
509 _classInfo[meta]->methodNames[methodId] = method;
512 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
513 const QMetaObject *meta = metaObject(obj);
514 Q_ASSERT(_classInfo.contains(meta));
515 if(!_classInfo[meta]->methodNames.contains(methodId))
516 setMethodName(obj, methodId);
517 return _classInfo[meta]->methodNames[methodId];
521 void SignalProxy::setSyncMap(SyncableObject *obj) {
522 const QMetaObject *meta = obj->syncMetaObject();
523 QHash<QByteArray, int> syncMap;
525 QList<int> slotIndexes;
526 for(int i = 0; i < meta->methodCount(); i++) {
527 if(meta->method(i).methodType() == QMetaMethod::Slot)
531 // we're faking sync pairs for sync replies
532 QByteArray slotSignature;
533 foreach(int slotIdx, slotIndexes) {
534 slotSignature = QByteArray(meta->method(slotIdx).signature());
535 if(!slotSignature.startsWith("receive"))
537 syncMap[slotSignature] = slotIdx;
540 QMetaMethod signal, slot;
542 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
543 signal = meta->method(signalIdx);
544 if(signal.methodType() != QMetaMethod::Signal)
548 foreach(int slotIdx, slotIndexes) {
549 slot = meta->method(slotIdx);
550 if(methodsMatch(signal, slot)) {
556 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
557 syncMap[QByteArray(signal.signature())] = matchIdx;
561 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
562 _classInfo[meta]->syncMap = syncMap;
565 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
566 const QMetaObject *meta = obj->syncMetaObject();
567 Q_ASSERT(_classInfo.contains(meta));
568 if(_classInfo[meta]->syncMap.isEmpty())
570 return _classInfo[meta]->syncMap;
573 void SignalProxy::setReceiveMap(SyncableObject *obj) {
574 const QMetaObject *meta = obj->syncMetaObject();
575 Q_ASSERT(_classInfo.contains(meta));
577 QHash<int, int> receiveMap;
579 QMetaMethod requestSlot;
580 QByteArray returnTypeName;
581 QByteArray signature;
582 QByteArray methodName;
586 const int methodCount = meta->methodCount();
587 for(int i = 0; i < methodCount; i++) {
588 requestSlot = meta->method(i);
589 if(requestSlot.methodType() != QMetaMethod::Slot)
592 returnTypeName = requestSlot.typeName();
593 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
596 signature = QByteArray(requestSlot.signature());
597 if(!signature.startsWith("request"))
600 paramsPos = signature.indexOf('(');
604 methodName = signature.left(paramsPos);
605 params = signature.mid(paramsPos);
607 methodName = methodName.replace("request", "receive");
608 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
610 signature = QMetaObject::normalizedSignature(methodName + params);
611 receiverId = meta->indexOfSlot(signature);
613 if(receiverId == -1) {
614 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
615 receiverId = meta->indexOfSlot(signature);
619 receiveMap[i] = receiverId;
621 _classInfo[meta]->receiveMap = receiveMap;
624 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
625 const QMetaObject *meta = obj->syncMetaObject();
626 Q_ASSERT(_classInfo.contains(meta));
627 if(_classInfo[meta]->receiveMap.isEmpty())
629 return _classInfo[meta]->receiveMap;
632 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
633 const QMetaObject *meta = obj->syncMetaObject();
634 Q_ASSERT(_classInfo.contains(meta));
635 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
638 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
639 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
640 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
643 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
644 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
645 return syncObject->syncMetaObject();
647 return obj->metaObject();
650 void SignalProxy::createClassInfo(QObject *obj) {
651 const QMetaObject *meta = metaObject(obj);
652 if(_classInfo.contains(meta))
655 ClassInfo *classInfo = new ClassInfo();
656 _classInfo[meta] = classInfo;
659 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
660 const QMetaObject* meta = metaObject(sender);
661 QByteArray sig(meta->normalizedSignature(signal).mid(1));
662 int methodId = meta->indexOfMethod(sig.constData());
663 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
664 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
668 createClassInfo(sender);
671 if(_relayHash.contains(sender))
672 relay = _relayHash[sender];
674 relay = _relayHash[sender] = new SignalRelay(this, sender);
676 relay->attachSignal(methodId, sigName);
682 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
683 const QMetaObject* meta = recv->metaObject();
684 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
685 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
686 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
690 createClassInfo(recv);
692 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
693 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
695 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
696 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
700 void SignalProxy::synchronize(SyncableObject *obj) {
701 createClassInfo(obj);
702 setUpdatedRemotelyId(obj);
704 // attaching all the Signals
706 if(_relayHash.contains(obj))
707 relay = _relayHash[obj];
709 relay = _relayHash[obj] = new SignalRelay(this, obj);
711 relay->setSynchronize(true);
713 // attaching as slave to receive sync Calls
714 QByteArray className(obj->syncMetaObject()->className());
715 _syncSlave[className][obj->objectName()] = obj;
717 if(proxyMode() == Server) {
718 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
719 obj->setInitialized();
720 emit objectInitialized(obj);
722 if(obj->isInitialized())
723 emit objectInitialized(obj);
729 void SignalProxy::requestInit(SyncableObject *obj) {
730 if(proxyMode() == Server || obj->isInitialized())
734 params << obj->syncMetaObject()->className()
735 << obj->objectName();
736 dispatchSignal(InitRequest, params);
739 void SignalProxy::detachSender() {
740 detachObject(sender());
743 void SignalProxy::detachObject(QObject* obj) {
744 stopSync(static_cast<SyncableObject *>(obj));
749 void SignalProxy::detachSignals(QObject* sender) {
750 if(!_relayHash.contains(sender))
752 _relayHash.take(sender)->deleteLater();
755 void SignalProxy::detachSlots(QObject* receiver) {
756 SlotHash::iterator slotIter = _attachedSlots.begin();
757 while(slotIter != _attachedSlots.end()) {
758 if(slotIter.value().first == receiver) {
759 slotIter = _attachedSlots.erase(slotIter);
765 void SignalProxy::stopSync(SyncableObject* obj) {
766 if(_relayHash.contains(obj))
767 _relayHash[obj]->setSynchronize(false);
769 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
770 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
771 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
772 while(classIter != _syncSlave.end()) {
773 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
774 classIter->remove(obj->objectName());
781 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
782 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
783 PeerHash::iterator peer = _peers.begin();
784 while(peer != _peers.end()) {
785 switch((*peer)->type()) {
786 case AbstractPeer::IODevicePeer:
788 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
790 ioPeer->dispatchPackedFunc(packedFunc);
792 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
795 case AbstractPeer::SignalProxyPeer:
796 (*peer)->dispatchSignal(requestType, params);
799 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
805 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
806 QVariantList params(packedFunc.toList());
808 if(params.isEmpty()) {
809 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
813 RequestType requestType = (RequestType)params.takeFirst().value<int>();
814 receivePeerSignal(sender, requestType, params);
817 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
818 switch(requestType) {
821 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
823 handleSignal(params);
824 //handleSignal(params.takeFirst().toByteArray(), params);
828 handleSync(sender, params);
832 handleInitRequest(sender, params);
836 handleInitData(sender, params);
840 receiveHeartBeat(sender, params);
844 receiveHeartBeatReply(sender, params);
848 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
852 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
853 if(!_peers.contains(sender)) {
854 // 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.
855 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
858 receivePeerSignal(_peers[sender], requestType, params);
861 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
862 if(params.count() < 3) {
863 qWarning() << "received invalid Sync call" << params;
867 QByteArray className = params.takeFirst().toByteArray();
868 QString objectName = params.takeFirst().toString();
869 QByteArray signal = params.takeFirst().toByteArray();
871 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
872 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
877 SyncableObject *receiver = _syncSlave[className][objectName];
878 if(!syncMap(receiver).contains(signal)) {
879 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
884 int slotId = syncMap(receiver)[signal];
886 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
887 if(!invokeSlot(receiver, slotId, params, returnValue)) {
888 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
892 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
893 int receiverId = receiveMap(receiver)[slotId];
894 QVariantList returnParams;
895 returnParams << className
897 << QByteArray(receiver->metaObject()->method(receiverId).signature());
898 if(argTypes(receiver, receiverId).count() > 1)
899 returnParams << params;
900 returnParams << returnValue;
901 sender->dispatchSignal(Sync, returnParams);
904 // send emit update signal
905 invokeSlot(receiver, updatedRemotelyId(receiver));
908 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
909 if(params.count() != 2) {
910 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
915 QByteArray className(params[0].toByteArray());
916 QString objectName(params[1].toString());
918 if(!_syncSlave.contains(className)) {
919 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
924 if(!_syncSlave[className].contains(objectName)) {
925 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
926 << className << objectName;
930 SyncableObject *obj = _syncSlave[className][objectName];
932 QVariantList params_;
937 sender->dispatchSignal(InitData, params_);
940 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
942 if(params.count() != 3) {
943 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
948 QByteArray className(params[0].toByteArray());
949 QString objectName(params[1].toString());
950 QVariantMap propertyMap(params[2].toMap());
952 if(!_syncSlave.contains(className)) {
953 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
958 if(!_syncSlave[className].contains(objectName)) {
959 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
960 << className << objectName;
964 SyncableObject *obj = _syncSlave[className][objectName];
965 setInitData(obj, propertyMap);
968 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
969 void SignalProxy::handleSignal(const QVariantList &data) {
970 QVariantList params = data;
971 QByteArray funcName = params.takeFirst().toByteArray();
975 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
976 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
977 receiver = (*slot).first;
978 methodId = (*slot).second;
979 if(!invokeSlot(receiver, methodId, params))
980 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
985 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
986 const QList<int> args = argTypes(receiver, methodId);
987 const int numArgs = params.count() < args.count()
991 if(minArgCount(receiver, methodId) > params.count()) {
992 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
996 void *_a[] = {0, // return type...
997 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
1000 // check for argument compatibility and build params array
1001 for(int i = 0; i < numArgs; i++) {
1002 if(!params[i].isValid()) {
1003 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());
1004 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1007 if(args[i] != QMetaType::type(params[i].typeName())) {
1008 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
1011 _a[i+1] = const_cast<void *>(params[i].constData());
1014 if(returnValue.type() != QVariant::Invalid)
1015 _a[0] = const_cast<void *>(returnValue.constData());
1017 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
1018 ? Qt::DirectConnection
1019 : Qt::QueuedConnection;
1021 if (type == Qt::DirectConnection) {
1022 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
1024 qWarning() << "Queued Connections are not implemented yet";
1025 // note to self: qmetaobject.cpp:990 ff
1031 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
1033 return invokeSlot(receiver, methodId, params, ret);
1036 void SignalProxy::dataAvailable() {
1037 // yet again. it's a private slot. no need for checks.
1038 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
1039 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
1040 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
1042 while(peer->readData(var))
1043 receivePackedFunc(peer, var);
1046 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
1047 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
1048 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
1049 qWarning("SignalProxy: Can't call write on a closed device");
1054 QDataStream out(&block, QIODevice::WriteOnly);
1055 out.setVersion(QDataStream::Qt_4_2);
1060 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
1062 itemStream.setVersion(QDataStream::Qt_4_2);
1065 rawItem = qCompress(rawItem);
1072 out.device()->seek(0);
1073 out << (quint32)(block.size() - sizeof(quint32));
1078 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
1079 QDataStream in(dev);
1080 in.setVersion(QDataStream::Qt_4_2);
1082 if(blockSize == 0) {
1083 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
1087 if(blockSize > 1 << 22) {
1088 disconnectDevice(dev, tr("Client tried to send package larger than max package size!"));
1092 if(blockSize == 0) {
1093 disconnectDevice(dev, tr("Client tried to send 0 byte package!"));
1097 if(dev->bytesAvailable() < blockSize)
1106 int nbytes = rawItem.size();
1108 const char *data = rawItem.constData();
1109 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
1110 disconnectDevice(dev, tr("Client sent corrupted compressed data!"));
1115 rawItem = qUncompress(rawItem);
1117 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
1118 itemStream.setVersion(QDataStream::Qt_4_2);
1124 if(!item.isValid()) {
1125 disconnectDevice(dev, tr("Client sent corrupt data: unable to load QVariant!"));
1132 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
1133 // if we don't even have the same basename it's a sure NO
1134 QString baseName = methodBaseName(signal);
1135 if(baseName != methodBaseName(slot))
1138 // are the signatures compatible?
1139 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1142 // we take an educated guess if the signals and slots match
1143 QString signalsuffix = ::methodName(signal);
1144 QString slotprefix = ::methodName(slot);
1145 if(!baseName.isEmpty()) {
1146 signalsuffix = signalsuffix.mid(baseName.count()).toLower();
1147 slotprefix = slotprefix.left(slotprefix.count() - baseName.count()).toLower();
1150 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1151 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1153 // qDebug() << Q_FUNC_INFO;
1154 // qDebug() << methodBaseName(signal) << methodBaseName(slot);
1155 // qDebug() << signalsuffix << slotprefix << sizediff << ratio;
1160 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
1161 QString methodname = QString(method.signature()).section("(", 0, 0);
1163 // determine where we have to chop:
1165 if(method.methodType() == QMetaMethod::Slot) {
1166 // we take evertyhing from the first uppercase char if it's slot
1167 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1168 if(upperCharPos == -1)
1170 methodname = methodname.mid(upperCharPos);
1172 // and if it's a signal we discard everything from the last uppercase char
1173 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1174 if(upperCharPos == -1)
1176 methodname = methodname.left(upperCharPos);
1179 methodname[0] = methodname[0].toUpper();
1184 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1185 return obj->toVariantMap();
1188 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1189 if(obj->isInitialized())
1191 obj->fromVariantMap(properties);
1192 obj->setInitialized();
1193 emit objectInitialized(obj);
1194 invokeSlot(obj, updatedRemotelyId(obj));
1197 void SignalProxy::sendHeartBeat() {
1198 QVariantList heartBeatParams;
1199 heartBeatParams << QTime::currentTime();
1200 PeerHash::iterator peer = _peers.begin();
1201 while(peer != _peers.end()) {
1202 if((*peer)->type() == AbstractPeer::IODevicePeer) {
1203 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
1204 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
1205 if(ioPeer->sentHeartBeats > 0) {
1206 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
1208 if(ioPeer->sentHeartBeats > 1) {
1209 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
1210 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
1213 ioPeer->sentHeartBeats++;
1220 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
1221 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
1224 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
1225 if(peer->type() != AbstractPeer::IODevicePeer) {
1226 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
1230 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
1231 ioPeer->sentHeartBeats = 0;
1233 if(params.isEmpty()) {
1234 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
1238 QTime sendTime = params[0].value<QTime>();
1239 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1242 void SignalProxy::customEvent(QEvent *event) {
1243 switch(event->type()) {
1246 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1247 receivePeerSignal(e->sender, e->requestType, e->params);
1253 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1254 removePeer(e->peer);
1262 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1263 if(!reason.isEmpty())
1264 qWarning() << qPrintable(reason);
1265 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1267 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1271 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1273 if(proxyMode() == Client) {
1274 emit lagUpdated(lag);
1279 void SignalProxy::dumpProxyStats() {
1281 if(proxyMode() == Server)
1287 foreach(SignalRelay *relay, _relayHash.values())
1288 sigCount += relay->sigCount();
1291 foreach(ObjectId oid, _syncSlave.values())
1292 slaveCount += oid.count();
1295 qDebug() << " Proxy Mode:" << mode;
1296 qDebug() << "attached sending Objects:" << _relayHash.count();
1297 qDebug() << " number of Signals:" << sigCount;
1298 qDebug() << " attached Slots:" << _attachedSlots.count();
1299 qDebug() << " number of synced Slaves:" << slaveCount;
1300 qDebug() << "number of Classes cached:" << _classInfo.count();
1303 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1304 const QMetaObject *meta = object->metaObject();
1305 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1307 QHash<QByteArray, int> syncMap_ = syncMap(object);
1308 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1309 while(iter != syncMap_.constEnd()) {
1310 qDebug() << qPrintable(QString("%1 --> %2 %3").arg(QString(iter.key()), 40).arg(iter.value()).arg(QString(meta->method(iter.value()).signature())));
1315 void SignalProxy::updateSecureState() {
1316 bool wasSecure = _secure;
1318 _secure = !_peers.isEmpty();
1319 PeerHash::const_iterator peerIter;
1320 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1321 _secure &= (*peerIter)->isSecure();
1324 if(wasSecure != _secure)
1325 emit secureStateChanged(_secure);