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);
78 bool synchronize() const;
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);
104 if(_c == QMetaObject::InvokeMetaMethod) {
105 if(sigNames.contains(_id) || synchronize()) {
106 const QList<int> &argTypes = proxy->argTypes(caller, _id);
108 int n = argTypes.size();
109 for(int i=0; i<n; i++) {
110 if(argTypes[i] == 0) {
111 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());
112 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
115 params.append(QVariant(argTypes[i], _a[i+1]));
117 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
118 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
119 proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params);
123 // dispatch Sync Signal if necessary
124 QByteArray signature(caller->metaObject()->method(_id).signature());
125 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
126 if(synchronize() && proxy->syncMap(syncObject).contains(signature)) {
127 //qDebug() << "__SYNC__ >>>"
128 // << caller->metaObject()->className()
129 // << caller->objectName()
132 // params.prepend(QVariant(_id));
133 params.prepend(signature);
134 params.prepend(syncObject->objectName());
135 params.prepend(syncObject->syncMetaObject()->className());
136 proxy->dispatchSignal(SignalProxy::Sync, params);
139 _id -= QObject::staticMetaObject.methodCount();
144 void SignalRelay::setSynchronize(bool sync) {
145 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
149 const QMetaObject *meta = syncObject->syncMetaObject();
152 for(int i = 0; i < meta->methodCount(); i++ ) {
154 QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
156 } else if (_sync && !sync) {
158 for(int i = 0; i < meta->methodCount(); i++ ) {
160 QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
166 bool SignalRelay::isSyncMethod(int i) {
167 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
171 QByteArray signature = syncObject->syncMetaObject()->method(i).signature();
172 if(!proxy->syncMap(syncObject).contains(signature))
175 if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested"))
178 if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested"))
184 bool SignalRelay::synchronize() const {
188 int SignalRelay::sigCount() const {
189 // only for debuging purpose
190 return sigNames.count();
193 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
194 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
195 // all connected methodIds are offset by the standard methodCount of QObject
196 if(!sigNames.contains(methodId))
197 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
200 if(!func.isEmpty()) {
201 fn = QMetaObject::normalizedSignature(func);
203 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
205 sigNames.insert(methodId, fn);
208 // ==================================================
210 // ==================================================
211 void SignalProxy::IODevicePeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
212 QVariantList packedFunc;
213 packedFunc << (qint16)requestType
215 dispatchPackedFunc(QVariant(packedFunc));
218 bool SignalProxy::IODevicePeer::isSecure() const {
220 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(_device);
222 return sslSocket->isEncrypted() || sslSocket->localAddress() == QHostAddress::LocalHost || sslSocket->localAddress() == QHostAddress::LocalHostIPv6;
225 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
227 return socket->localAddress() == QHostAddress::LocalHost || socket->localAddress() == QHostAddress::LocalHostIPv6;
232 QString SignalProxy::IODevicePeer::address() const {
233 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
235 return socket->peerAddress().toString();
240 void SignalProxy::SignalProxyPeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
241 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
242 ? Qt::DirectConnection
243 : Qt::QueuedConnection;
245 if(type == Qt::DirectConnection) {
246 receiver->receivePeerSignal(sender, requestType, params);
248 QCoreApplication::postEvent(receiver, new PeerSignalEvent(sender, requestType, params));
252 // ==================================================
254 // ==================================================
255 SignalProxy::SignalProxy(QObject* parent)
258 setProxyMode(Client);
262 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
269 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
277 SignalProxy::~SignalProxy() {
278 QList<QObject*> senders = _relayHash.keys();
279 foreach(QObject* sender, senders)
280 detachObject(sender);
284 void SignalProxy::setProxyMode(ProxyMode mode) {
285 PeerHash::iterator peer = _peers.begin();
286 while(peer != _peers.end()) {
287 if((*peer)->type() != AbstractPeer::IODevicePeer) {
288 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
289 if(ioPeer->isOpen()) {
290 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
294 if((*peer)->type() != AbstractPeer::SignalProxyPeer) {
295 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
308 void SignalProxy::init() {
309 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
310 _heartBeatTimer.start(30 * 1000);
315 void SignalProxy::initServer() {
318 void SignalProxy::initClient() {
319 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
322 bool SignalProxy::addPeer(QIODevice* iodev) {
326 if(_peers.contains(iodev))
329 if(proxyMode() == Client && !_peers.isEmpty()) {
330 qWarning("SignalProxy: only one peer allowed in client mode!");
334 if(!iodev->isOpen()) {
335 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
339 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
340 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
343 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
345 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
350 iodev->setParent(this);
352 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
354 if(_peers.count() == 1)
361 bool SignalProxy::addPeer(SignalProxy* proxy) {
365 if(proxyMode() == proxy->proxyMode()) {
366 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
370 if(_peers.contains(proxy)) {
374 if(proxyMode() == Client && !_peers.isEmpty()) {
375 qWarning("SignalProxy: only one peer allowed in client mode!");
379 _peers[proxy] = new SignalProxyPeer(this, proxy);
380 proxy->addPeer(this);
382 if(_peers.count() == 1)
389 void SignalProxy::removeAllPeers() {
390 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
391 // wee need to copy that list since we modify it in the loop
392 QList<QObject *> peers = _peers.keys();
393 foreach(QObject *peer, peers) {
398 void SignalProxy::removePeer(QObject* dev) {
399 if(_peers.isEmpty()) {
400 qWarning() << "SignalProxy::removePeer(): No peers in use!";
405 if(!_peers.contains(dev)) {
406 qWarning() << "SignalProxy: unknown Peer" << dev;
410 AbstractPeer *peer = _peers[dev];
413 disconnect(dev, 0, this, 0);
414 if(peer->type() == AbstractPeer::IODevicePeer)
415 emit peerRemoved(static_cast<QIODevice *>(dev));
417 if(peer->type() == AbstractPeer::SignalProxyPeer) {
418 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
419 if(proxy->_peers.contains(this))
420 proxy->removePeer(this);
423 if(dev->parent() == this)
434 void SignalProxy::removePeerBySender() {
435 removePeer(sender());
438 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
439 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
440 const QMetaObject *meta = syncObject->syncMetaObject();
441 const QByteArray className(meta->className());
442 objectRenamed(className, newname, oldname);
444 if(proxyMode() == Client)
448 params << "__objectRenamed__" << className << newname << oldname;
449 dispatchSignal(RpcCall, params);
452 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
453 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
454 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
459 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
460 const QMetaObject *meta = metaObject(obj);
461 QList<QByteArray> p = meta->method(methodId).parameterTypes();
464 for(int i=0; i<ct; i++)
465 argTypes.append(QMetaType::type(p.value(i)));
467 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
468 _classInfo[meta]->argTypes[methodId] = argTypes;
471 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
472 const QMetaObject *meta = metaObject(obj);
473 Q_ASSERT(_classInfo.contains(meta));
474 if(!_classInfo[meta]->argTypes.contains(methodId))
475 setArgTypes(obj, methodId);
476 return _classInfo[meta]->argTypes[methodId];
479 void SignalProxy::setReturnType(QObject *obj, int methodId) {
480 const QMetaObject *meta = metaObject(obj);
481 int returnType = QMetaType::type(meta->method(methodId).typeName());
483 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
484 _classInfo[meta]->returnType[methodId] = returnType;
487 const int &SignalProxy::returnType(QObject *obj, int methodId) {
488 const QMetaObject *meta = metaObject(obj);
489 Q_ASSERT(_classInfo.contains(meta));
490 if(!_classInfo[meta]->returnType.contains(methodId))
491 setReturnType(obj, methodId);
492 return _classInfo[meta]->returnType[methodId];
495 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
496 const QMetaObject *meta = metaObject(obj);
497 QString signature(meta->method(methodId).signature());
498 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
499 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
500 _classInfo[meta]->minArgCount[methodId] = minCount;
503 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
504 const QMetaObject *meta = metaObject(obj);
505 Q_ASSERT(_classInfo.contains(meta));
506 if(!_classInfo[meta]->minArgCount.contains(methodId))
507 setMinArgCount(obj, methodId);
508 return _classInfo[meta]->minArgCount[methodId];
511 void SignalProxy::setMethodName(QObject *obj, int methodId) {
512 const QMetaObject *meta = metaObject(obj);
513 QByteArray method(::methodName(meta->method(methodId)));
514 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
515 _classInfo[meta]->methodNames[methodId] = method;
518 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
519 const QMetaObject *meta = metaObject(obj);
520 Q_ASSERT(_classInfo.contains(meta));
521 if(!_classInfo[meta]->methodNames.contains(methodId))
522 setMethodName(obj, methodId);
523 return _classInfo[meta]->methodNames[methodId];
527 void SignalProxy::setSyncMap(SyncableObject *obj) {
528 const QMetaObject *meta = obj->syncMetaObject();
529 QHash<QByteArray, int> syncMap;
531 QList<int> slotIndexes;
532 for(int i = 0; i < meta->methodCount(); i++) {
533 if(meta->method(i).methodType() == QMetaMethod::Slot)
537 // we're faking sync pairs for sync replies
538 QByteArray slotSignature;
539 foreach(int slotIdx, slotIndexes) {
540 slotSignature = QByteArray(meta->method(slotIdx).signature());
541 if(!slotSignature.startsWith("receive"))
543 syncMap[slotSignature] = slotIdx;
546 QMetaMethod signal, slot;
548 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
549 signal = meta->method(signalIdx);
550 if(signal.methodType() != QMetaMethod::Signal)
554 foreach(int slotIdx, slotIndexes) {
555 slot = meta->method(slotIdx);
556 if(methodsMatch(signal, slot)) {
562 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
563 syncMap[QByteArray(signal.signature())] = matchIdx;
567 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
568 _classInfo[meta]->syncMap = syncMap;
571 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
572 const QMetaObject *meta = obj->syncMetaObject();
573 Q_ASSERT(_classInfo.contains(meta));
574 if(_classInfo[meta]->syncMap.isEmpty())
576 return _classInfo[meta]->syncMap;
579 void SignalProxy::setReceiveMap(SyncableObject *obj) {
580 const QMetaObject *meta = obj->syncMetaObject();
581 Q_ASSERT(_classInfo.contains(meta));
583 QHash<int, int> receiveMap;
585 QMetaMethod requestSlot;
586 QByteArray returnTypeName;
587 QByteArray signature;
588 QByteArray methodName;
592 const int methodCount = meta->methodCount();
593 for(int i = 0; i < methodCount; i++) {
594 requestSlot = meta->method(i);
595 if(requestSlot.methodType() != QMetaMethod::Slot)
598 returnTypeName = requestSlot.typeName();
599 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
602 signature = QByteArray(requestSlot.signature());
603 if(!signature.startsWith("request"))
606 paramsPos = signature.indexOf('(');
610 methodName = signature.left(paramsPos);
611 params = signature.mid(paramsPos);
613 methodName = methodName.replace("request", "receive");
614 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
616 signature = QMetaObject::normalizedSignature(methodName + params);
617 receiverId = meta->indexOfSlot(signature);
619 if(receiverId == -1) {
620 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
621 receiverId = meta->indexOfSlot(signature);
625 receiveMap[i] = receiverId;
627 _classInfo[meta]->receiveMap = receiveMap;
630 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
631 const QMetaObject *meta = obj->syncMetaObject();
632 Q_ASSERT(_classInfo.contains(meta));
633 if(_classInfo[meta]->receiveMap.isEmpty())
635 return _classInfo[meta]->receiveMap;
638 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
639 const QMetaObject *meta = obj->syncMetaObject();
640 Q_ASSERT(_classInfo.contains(meta));
641 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
644 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
645 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
646 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
649 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
650 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
651 return syncObject->syncMetaObject();
653 return obj->metaObject();
656 void SignalProxy::createClassInfo(QObject *obj) {
657 const QMetaObject *meta = metaObject(obj);
658 if(_classInfo.contains(meta))
661 ClassInfo *classInfo = new ClassInfo();
662 _classInfo[meta] = classInfo;
665 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
666 const QMetaObject* meta = metaObject(sender);
667 QByteArray sig(meta->normalizedSignature(signal).mid(1));
668 int methodId = meta->indexOfMethod(sig.constData());
669 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
670 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
674 createClassInfo(sender);
677 if(_relayHash.contains(sender))
678 relay = _relayHash[sender];
680 relay = _relayHash[sender] = new SignalRelay(this, sender);
682 relay->attachSignal(methodId, sigName);
688 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
689 const QMetaObject* meta = recv->metaObject();
690 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
691 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
692 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
696 createClassInfo(recv);
698 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
699 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
701 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
702 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
706 void SignalProxy::synchronize(SyncableObject *obj) {
707 createClassInfo(obj);
708 setUpdatedRemotelyId(obj);
710 // attaching all the Signals
712 if(_relayHash.contains(obj))
713 relay = _relayHash[obj];
715 relay = _relayHash[obj] = new SignalRelay(this, obj);
717 relay->setSynchronize(true);
719 // attaching as slave to receive sync Calls
720 QByteArray className(obj->syncMetaObject()->className());
721 _syncSlave[className][obj->objectName()] = obj;
723 if(proxyMode() == Server) {
724 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
725 obj->setInitialized();
726 emit objectInitialized(obj);
728 if(obj->isInitialized())
729 emit objectInitialized(obj);
735 void SignalProxy::requestInit(SyncableObject *obj) {
736 if(proxyMode() == Server || obj->isInitialized())
740 params << obj->syncMetaObject()->className()
741 << obj->objectName();
742 dispatchSignal(InitRequest, params);
745 void SignalProxy::detachSender() {
746 detachObject(sender());
749 void SignalProxy::detachObject(QObject* obj) {
750 stopSync(static_cast<SyncableObject *>(obj));
755 void SignalProxy::detachSignals(QObject* sender) {
756 if(!_relayHash.contains(sender))
758 _relayHash.take(sender)->deleteLater();
761 void SignalProxy::detachSlots(QObject* receiver) {
762 SlotHash::iterator slotIter = _attachedSlots.begin();
763 while(slotIter != _attachedSlots.end()) {
764 if(slotIter.value().first == receiver) {
765 slotIter = _attachedSlots.erase(slotIter);
771 void SignalProxy::stopSync(SyncableObject* obj) {
772 if(_relayHash.contains(obj))
773 _relayHash[obj]->setSynchronize(false);
775 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
776 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
777 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
778 while(classIter != _syncSlave.end()) {
779 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
780 classIter->remove(obj->objectName());
787 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
788 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
789 PeerHash::iterator peer = _peers.begin();
790 while(peer != _peers.end()) {
791 switch((*peer)->type()) {
792 case AbstractPeer::IODevicePeer:
794 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
796 ioPeer->dispatchPackedFunc(packedFunc);
798 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
801 case AbstractPeer::SignalProxyPeer:
802 (*peer)->dispatchSignal(requestType, params);
805 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
811 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
812 QVariantList params(packedFunc.toList());
814 if(params.isEmpty()) {
815 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
819 RequestType requestType = (RequestType)params.takeFirst().value<int>();
820 receivePeerSignal(sender, requestType, params);
823 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
824 switch(requestType) {
827 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
829 handleSignal(params);
830 //handleSignal(params.takeFirst().toByteArray(), params);
834 handleSync(sender, params);
838 handleInitRequest(sender, params);
842 handleInitData(sender, params);
846 receiveHeartBeat(sender, params);
850 receiveHeartBeatReply(sender, params);
854 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
858 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
859 if(!_peers.contains(sender)) {
860 // 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.
861 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
864 receivePeerSignal(_peers[sender], requestType, params);
867 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
868 if(params.count() < 3) {
869 qWarning() << "received invalid Sync call" << params;
873 QByteArray className = params.takeFirst().toByteArray();
874 QString objectName = params.takeFirst().toString();
875 QByteArray signal = params.takeFirst().toByteArray();
877 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
878 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
883 SyncableObject *receiver = _syncSlave[className][objectName];
884 if(!syncMap(receiver).contains(signal)) {
885 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
890 int slotId = syncMap(receiver)[signal];
892 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
893 if(!invokeSlot(receiver, slotId, params, returnValue)) {
894 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
898 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
899 int receiverId = receiveMap(receiver)[slotId];
900 QVariantList returnParams;
901 returnParams << className
903 << QByteArray(receiver->metaObject()->method(receiverId).signature());
904 if(argTypes(receiver, receiverId).count() > 1)
905 returnParams << params;
906 returnParams << returnValue;
907 sender->dispatchSignal(Sync, returnParams);
910 // send emit update signal
911 invokeSlot(receiver, updatedRemotelyId(receiver));
914 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
915 if(params.count() != 2) {
916 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
921 QByteArray className(params[0].toByteArray());
922 QString objectName(params[1].toString());
924 if(!_syncSlave.contains(className)) {
925 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
930 if(!_syncSlave[className].contains(objectName)) {
931 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
932 << className << objectName;
936 SyncableObject *obj = _syncSlave[className][objectName];
938 QVariantList params_;
943 sender->dispatchSignal(InitData, params_);
946 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
948 if(params.count() != 3) {
949 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
954 QByteArray className(params[0].toByteArray());
955 QString objectName(params[1].toString());
956 QVariantMap propertyMap(params[2].toMap());
958 if(!_syncSlave.contains(className)) {
959 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
964 if(!_syncSlave[className].contains(objectName)) {
965 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
966 << className << objectName;
970 SyncableObject *obj = _syncSlave[className][objectName];
971 setInitData(obj, propertyMap);
974 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
975 void SignalProxy::handleSignal(const QVariantList &data) {
976 QVariantList params = data;
977 QByteArray funcName = params.takeFirst().toByteArray();
981 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
982 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
983 receiver = (*slot).first;
984 methodId = (*slot).second;
985 if(!invokeSlot(receiver, methodId, params))
986 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
991 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
992 const QList<int> args = argTypes(receiver, methodId);
993 const int numArgs = params.count() < args.count()
997 if(minArgCount(receiver, methodId) > params.count()) {
998 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
1002 void *_a[] = {0, // return type...
1003 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
1006 // check for argument compatibility and build params array
1007 for(int i = 0; i < numArgs; i++) {
1008 if(!params[i].isValid()) {
1009 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());
1010 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1013 if(args[i] != QMetaType::type(params[i].typeName())) {
1014 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
1017 _a[i+1] = const_cast<void *>(params[i].constData());
1020 if(returnValue.type() != QVariant::Invalid)
1021 _a[0] = const_cast<void *>(returnValue.constData());
1023 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
1024 ? Qt::DirectConnection
1025 : Qt::QueuedConnection;
1027 if (type == Qt::DirectConnection) {
1028 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
1030 qWarning() << "Queued Connections are not implemented yet";
1031 // note to self: qmetaobject.cpp:990 ff
1037 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
1039 return invokeSlot(receiver, methodId, params, ret);
1042 void SignalProxy::dataAvailable() {
1043 // yet again. it's a private slot. no need for checks.
1044 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
1045 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
1046 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
1048 while(peer->readData(var))
1049 receivePackedFunc(peer, var);
1052 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
1053 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
1054 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
1055 qWarning("SignalProxy: Can't call write on a closed device");
1060 QDataStream out(&block, QIODevice::WriteOnly);
1061 out.setVersion(QDataStream::Qt_4_2);
1066 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
1068 itemStream.setVersion(QDataStream::Qt_4_2);
1071 rawItem = qCompress(rawItem);
1078 out.device()->seek(0);
1079 out << (quint32)(block.size() - sizeof(quint32));
1084 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
1085 QDataStream in(dev);
1086 in.setVersion(QDataStream::Qt_4_2);
1088 if(blockSize == 0) {
1089 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
1093 if(blockSize > 1 << 22) {
1094 disconnectDevice(dev, tr("Client tried to send package larger than max package size!"));
1098 if(blockSize == 0) {
1099 disconnectDevice(dev, tr("Client tried to send 0 byte package!"));
1103 if(dev->bytesAvailable() < blockSize)
1112 int nbytes = rawItem.size();
1114 const char *data = rawItem.constData();
1115 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
1116 disconnectDevice(dev, tr("Client sent corrupted compressed data!"));
1121 rawItem = qUncompress(rawItem);
1123 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
1124 itemStream.setVersion(QDataStream::Qt_4_2);
1130 if(!item.isValid()) {
1131 disconnectDevice(dev, tr("Client sent corrupt data: unable to load QVariant!"));
1138 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
1139 // if we don't even have the same basename it's a sure NO
1140 QString baseName = methodBaseName(signal);
1141 if(baseName != methodBaseName(slot))
1144 // are the signatures compatible?
1145 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1148 // we take an educated guess if the signals and slots match
1149 QString signalsuffix = ::methodName(signal);
1150 QString slotprefix = ::methodName(slot);
1151 if(!baseName.isEmpty()) {
1152 signalsuffix = signalsuffix.mid(baseName.count()).toLower();
1153 slotprefix = slotprefix.left(slotprefix.count() - baseName.count()).toLower();
1156 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1157 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1159 // qDebug() << Q_FUNC_INFO;
1160 // qDebug() << methodBaseName(signal) << methodBaseName(slot);
1161 // qDebug() << signalsuffix << slotprefix << sizediff << ratio;
1166 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
1167 QString methodname = QString(method.signature()).section("(", 0, 0);
1169 // determine where we have to chop:
1171 if(method.methodType() == QMetaMethod::Slot) {
1172 // we take evertyhing from the first uppercase char if it's slot
1173 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1174 if(upperCharPos == -1)
1176 methodname = methodname.mid(upperCharPos);
1178 // and if it's a signal we discard everything from the last uppercase char
1179 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1180 if(upperCharPos == -1)
1182 methodname = methodname.left(upperCharPos);
1185 methodname[0] = methodname[0].toUpper();
1190 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1191 return obj->toVariantMap();
1194 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1195 if(obj->isInitialized())
1197 obj->fromVariantMap(properties);
1198 obj->setInitialized();
1199 emit objectInitialized(obj);
1200 invokeSlot(obj, updatedRemotelyId(obj));
1203 void SignalProxy::sendHeartBeat() {
1204 QVariantList heartBeatParams;
1205 heartBeatParams << QTime::currentTime();
1206 PeerHash::iterator peer = _peers.begin();
1207 while(peer != _peers.end()) {
1208 if((*peer)->type() == AbstractPeer::IODevicePeer) {
1209 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
1210 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
1211 if(ioPeer->sentHeartBeats > 0) {
1212 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
1214 if(ioPeer->sentHeartBeats > 1) {
1215 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
1216 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
1219 ioPeer->sentHeartBeats++;
1226 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
1227 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
1230 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
1231 if(peer->type() != AbstractPeer::IODevicePeer) {
1232 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
1236 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
1237 ioPeer->sentHeartBeats = 0;
1239 if(params.isEmpty()) {
1240 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
1244 QTime sendTime = params[0].value<QTime>();
1245 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1248 void SignalProxy::customEvent(QEvent *event) {
1249 switch(event->type()) {
1252 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1253 receivePeerSignal(e->sender, e->requestType, e->params);
1259 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1260 removePeer(e->peer);
1268 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1269 if(!reason.isEmpty())
1270 qWarning() << qPrintable(reason);
1271 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1273 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1277 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1279 if(proxyMode() == Client) {
1280 emit lagUpdated(lag);
1285 void SignalProxy::dumpProxyStats() {
1287 if(proxyMode() == Server)
1293 foreach(SignalRelay *relay, _relayHash.values())
1294 sigCount += relay->sigCount();
1297 foreach(ObjectId oid, _syncSlave.values())
1298 slaveCount += oid.count();
1301 qDebug() << " Proxy Mode:" << mode;
1302 qDebug() << "attached sending Objects:" << _relayHash.count();
1303 qDebug() << " number of Signals:" << sigCount;
1304 qDebug() << " attached Slots:" << _attachedSlots.count();
1305 qDebug() << " number of synced Slaves:" << slaveCount;
1306 qDebug() << "number of Classes cached:" << _classInfo.count();
1309 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1310 const QMetaObject *meta = object->metaObject();
1311 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1313 QHash<QByteArray, int> syncMap_ = syncMap(object);
1314 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1315 while(iter != syncMap_.constEnd()) {
1316 qDebug() << qPrintable(QString("%1 --> %2 %3").arg(QString(iter.key()), 40).arg(iter.value()).arg(QString(meta->method(iter.value()).signature())));
1321 void SignalProxy::updateSecureState() {
1322 bool wasSecure = _secure;
1324 _secure = !_peers.isEmpty();
1325 PeerHash::const_iterator peerIter;
1326 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1327 _secure &= (*peerIter)->isSecure();
1330 if(wasSecure != _secure)
1331 emit secureStateChanged(_secure);