1 /***************************************************************************
2 * Copyright (C) 2005-09 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);
198 fn = SIGNAL(fakeMethodSignature());
199 fn = fn.replace("fakeMethodSignature()", 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);
587 obj->synchronize(this);
590 void SignalProxy::detachObject(QObject *obj) {
596 void SignalProxy::detachSignals(QObject *sender) {
597 _signalRelay->detachSignal(sender);
600 void SignalProxy::detachSlots(QObject* receiver) {
601 SlotHash::iterator slotIter = _attachedSlots.begin();
602 while(slotIter != _attachedSlots.end()) {
603 if(slotIter.value().first == receiver) {
604 slotIter = _attachedSlots.erase(slotIter);
610 void SignalProxy::stopSync(QObject *obj) {
611 SyncableObject *syncableObject = qobject_cast<SyncableObject *>(obj);
612 if(syncableObject && _syncRelays.contains(syncableObject->syncMetaObject())) {
613 QObject::disconnect(syncableObject, 0, _syncRelays[syncableObject->syncMetaObject()], 0);
616 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
617 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
618 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
619 while(classIter != _syncSlave.end()) {
620 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
621 classIter->remove(obj->objectName());
628 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
629 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
630 PeerHash::iterator peer = _peers.begin();
631 while(peer != _peers.end()) {
632 switch((*peer)->type()) {
633 case AbstractPeer::IODevicePeer:
635 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
637 ioPeer->dispatchPackedFunc(packedFunc);
639 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
642 case AbstractPeer::SignalProxyPeer:
643 (*peer)->dispatchSignal(requestType, params);
646 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
652 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
653 QVariantList params(packedFunc.toList());
655 if(params.isEmpty()) {
656 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
660 RequestType requestType = (RequestType)params.takeFirst().value<int>();
661 receivePeerSignal(sender, requestType, params);
664 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
665 switch(requestType) {
666 // list all RequestTypes that shouldnot trigger a heartbeat counter reset here
670 if(sender->type() == AbstractPeer::IODevicePeer) {
671 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(sender);
672 ioPeer->sentHeartBeats = 0;
676 switch(requestType) {
679 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
681 handleSignal(params);
682 //handleSignal(params.takeFirst().toByteArray(), params);
686 handleSync(sender, params);
690 handleInitRequest(sender, params);
694 handleInitData(sender, params);
698 receiveHeartBeat(sender, params);
702 receiveHeartBeatReply(sender, params);
706 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
710 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
711 if(!_peers.contains(sender)) {
712 // 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.
713 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
716 receivePeerSignal(_peers[sender], requestType, params);
719 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
720 if(params.count() < 3) {
721 qWarning() << "received invalid Sync call" << params;
725 QByteArray className = params.takeFirst().toByteArray();
726 QString objectName = params.takeFirst().toString();
727 QByteArray signal = params.takeFirst().toByteArray();
729 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
730 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
735 SyncableObject *receiver = _syncSlave[className][objectName];
736 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
737 if(!eMeta->syncMap().contains(signal)) {
738 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
743 int slotId = eMeta->syncMap()[signal];
745 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
746 if(!invokeSlot(receiver, slotId, params, returnValue)) {
747 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
751 if(returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
752 int receiverId = eMeta->receiveMap()[slotId];
753 QVariantList returnParams;
754 returnParams << className
756 << QByteArray(receiver->metaObject()->method(receiverId).signature());
757 if(eMeta->argTypes(receiverId).count() > 1)
758 returnParams << params;
759 returnParams << returnValue;
760 sender->dispatchSignal(Sync, returnParams);
763 // send emit update signal
764 invokeSlot(receiver, eMeta->updatedRemotelyId());
767 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
768 if(params.count() != 2) {
769 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
774 QByteArray className(params[0].toByteArray());
775 QString objectName(params[1].toString());
777 if(!_syncSlave.contains(className)) {
778 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
783 if(!_syncSlave[className].contains(objectName)) {
784 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
785 << className << objectName;
789 SyncableObject *obj = _syncSlave[className][objectName];
791 QVariantList params_;
796 sender->dispatchSignal(InitData, params_);
799 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
801 if(params.count() != 3) {
802 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
807 QByteArray className(params[0].toByteArray());
808 QString objectName(params[1].toString());
809 QVariantMap propertyMap(params[2].toMap());
811 if(!_syncSlave.contains(className)) {
812 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
817 if(!_syncSlave[className].contains(objectName)) {
818 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
819 << className << objectName;
823 SyncableObject *obj = _syncSlave[className][objectName];
824 setInitData(obj, propertyMap);
827 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
828 void SignalProxy::handleSignal(const QVariantList &data) {
829 QVariantList params = data;
830 QByteArray funcName = params.takeFirst().toByteArray();
834 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
835 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
836 receiver = (*slot).first;
837 methodId = (*slot).second;
838 if(!invokeSlot(receiver, methodId, params)) {
839 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
840 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
846 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
847 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
848 const QList<int> args = eMeta->argTypes(methodId);
849 const int numArgs = params.count() < args.count()
853 if(eMeta->minArgCount(methodId) > params.count()) {
854 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
858 void *_a[] = {0, // return type...
859 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
862 // check for argument compatibility and build params array
863 for(int i = 0; i < numArgs; i++) {
864 if(!params[i].isValid()) {
865 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());
866 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
869 if(args[i] != QMetaType::type(params[i].typeName())) {
870 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
873 _a[i+1] = const_cast<void *>(params[i].constData());
876 if(returnValue.type() != QVariant::Invalid)
877 _a[0] = const_cast<void *>(returnValue.constData());
879 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
880 ? Qt::DirectConnection
881 : Qt::QueuedConnection;
883 if(type == Qt::DirectConnection) {
884 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
886 qWarning() << "Queued Connections are not implemented yet";
887 // note to self: qmetaobject.cpp:990 ff
893 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
895 return invokeSlot(receiver, methodId, params, ret);
898 void SignalProxy::dataAvailable() {
899 // yet again. it's a private slot. no need for checks.
900 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
901 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
902 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
904 while(peer->readData(var))
905 receivePackedFunc(peer, var);
908 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
909 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
910 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
911 qWarning("SignalProxy: Can't call write on a closed device");
916 QDataStream out(&block, QIODevice::WriteOnly);
917 out.setVersion(QDataStream::Qt_4_2);
922 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
924 itemStream.setVersion(QDataStream::Qt_4_2);
927 rawItem = qCompress(rawItem);
934 out.device()->seek(0);
935 out << (quint32)(block.size() - sizeof(quint32));
940 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
945 in.setVersion(QDataStream::Qt_4_2);
948 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
952 if(blockSize > 1 << 22) {
953 disconnectDevice(dev, tr("Peer tried to send package larger than max package size!"));
958 disconnectDevice(dev, tr("Peer tried to send 0 byte package!"));
962 if(dev->bytesAvailable() < blockSize)
971 int nbytes = rawItem.size();
973 const char *data = rawItem.constData();
974 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
975 disconnectDevice(dev, tr("Peer sent corrupted compressed data!"));
980 rawItem = qUncompress(rawItem);
982 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
983 itemStream.setVersion(QDataStream::Qt_4_2);
989 if(!item.isValid()) {
990 disconnectDevice(dev, tr("Peer sent corrupt data: unable to load QVariant!"));
997 void SignalProxy::requestInit(SyncableObject *obj) {
998 if(proxyMode() == Server || obj->isInitialized())
1001 QVariantList params;
1002 params << obj->syncMetaObject()->className()
1003 << obj->objectName();
1004 dispatchSignal(InitRequest, params);
1007 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1008 return obj->toVariantMap();
1011 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1012 if(obj->isInitialized())
1014 obj->fromVariantMap(properties);
1015 obj->setInitialized();
1016 emit objectInitialized(obj);
1017 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
1020 void SignalProxy::sendHeartBeat() {
1021 QVariantList heartBeatParams;
1022 heartBeatParams << QTime::currentTime();
1023 PeerHash::iterator peer = _peers.begin();
1024 while(peer != _peers.end()) {
1025 if((*peer)->type() == AbstractPeer::IODevicePeer) {
1026 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
1027 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
1028 if(ioPeer->sentHeartBeats > 0) {
1029 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
1031 if(ioPeer->sentHeartBeats > 1) {
1032 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
1033 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
1036 ioPeer->sentHeartBeats++;
1043 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
1044 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
1047 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
1048 if(peer->type() != AbstractPeer::IODevicePeer) {
1049 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
1053 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
1054 ioPeer->sentHeartBeats = 0;
1056 if(params.isEmpty()) {
1057 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
1061 QTime sendTime = params[0].value<QTime>();
1062 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1065 void SignalProxy::customEvent(QEvent *event) {
1066 switch(event->type()) {
1069 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1070 receivePeerSignal(e->sender, e->requestType, e->params);
1076 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1077 removePeer(e->peer);
1085 void SignalProxy::syncCall(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap) {
1086 if(modeType != _proxyMode)
1089 ExtendedMetaObject *eMeta = extendedMetaObject(obj);
1091 QVariantList params;
1093 params << eMeta->metaObject()->className()
1094 << obj->objectName()
1095 << QByteArray(funcname);
1098 const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
1100 for(int i = 0; i < argTypes.size(); i++) {
1101 if(argTypes[i] == 0) {
1102 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
1103 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1106 params << QVariant(argTypes[i], va_arg(ap, void *));
1110 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1111 if(!reason.isEmpty())
1112 qWarning() << qPrintable(reason);
1113 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1115 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1119 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1121 if(proxyMode() == Client) {
1122 emit lagUpdated(lag);
1126 void SignalProxy::dumpProxyStats() {
1128 if(proxyMode() == Server)
1134 foreach(SyncRelay *relay, _syncRelays.values())
1135 sigCount += relay->signalCount();
1138 foreach(ObjectId oid, _syncSlave.values())
1139 slaveCount += oid.count();
1142 qDebug() << " Proxy Mode:" << mode;
1143 // qDebug() << "attached sending Objects:" << _relayHash.count();
1144 qDebug() << " number of Signals:" << sigCount;
1145 qDebug() << " attached Slots:" << _attachedSlots.count();
1146 qDebug() << " number of synced Slaves:" << slaveCount;
1147 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1150 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1151 const QMetaObject *meta = object->metaObject();
1152 ExtendedMetaObject *eMeta = extendedMetaObject(object);
1153 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1155 QHash<QByteArray, int> syncMap_ = eMeta->syncMap();
1156 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1157 while(iter != syncMap_.constEnd()) {
1158 qDebug() << qPrintable(QString("%1 --> %2 %3").arg(QString(iter.key()), 40).arg(iter.value()).arg(QString(meta->method(iter.value()).signature())));
1163 void SignalProxy::updateSecureState() {
1164 bool wasSecure = _secure;
1166 _secure = !_peers.isEmpty();
1167 PeerHash::const_iterator peerIter;
1168 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1169 _secure &= (*peerIter)->isSecure();
1172 if(wasSecure != _secure)
1173 emit secureStateChanged(_secure);
1177 // ==================================================
1178 // ExtendedMetaObject
1179 // ==================================================
1180 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta)
1182 _updatedRemotelyId(-1)
1186 const QList<int> &SignalProxy::ExtendedMetaObject::argTypes(int methodId) {
1187 if(!_argTypes.contains(methodId)) {
1188 QList<QByteArray> paramTypes = _meta->method(methodId).parameterTypes();
1189 QList<int> argTypes;
1190 for(int i = 0; i < paramTypes.count(); i++) {
1191 argTypes.append(QMetaType::type(paramTypes[i]));
1193 _argTypes[methodId] = argTypes;
1195 return _argTypes[methodId];
1198 int SignalProxy::ExtendedMetaObject::returnType(int methodId) {
1199 if(!_returnType.contains(methodId)) {
1200 _returnType[methodId] = QMetaType::type(_meta->method(methodId).typeName());
1202 return _returnType[methodId];
1205 int SignalProxy::ExtendedMetaObject::minArgCount(int methodId) {
1206 if(!_minArgCount.contains(methodId)) {
1207 QString signature(_meta->method(methodId).signature());
1208 _minArgCount[methodId] = _meta->method(methodId).parameterTypes().count() - signature.count("=");
1210 return _minArgCount[methodId];
1213 const QByteArray &SignalProxy::ExtendedMetaObject::methodName(int methodId) {
1214 if(!_methodNames.contains(methodId)) {
1215 _methodNames[methodId] = methodName(_meta->method(methodId));
1217 return _methodNames[methodId];
1220 int SignalProxy::ExtendedMetaObject::methodId(const QByteArray &methodName) {
1221 if(_methodIds.contains(methodName)) {
1222 return _methodIds[methodName];
1224 for(int i = _meta->methodOffset(); i < _meta->methodCount(); i++) {
1225 if(ExtendedMetaObject::methodName(_meta->method(i)) == methodName) {
1226 _methodIds[methodName] = i;
1235 const QHash<QByteArray, int> &SignalProxy::ExtendedMetaObject::syncMap() {
1236 if(_syncMap.isEmpty()) {
1237 QHash<QByteArray, int> syncMap;
1239 QList<int> slotIndexes;
1240 for(int i = 0; i < _meta->methodCount(); i++) {
1241 if(_meta->method(i).methodType() == QMetaMethod::Slot)
1245 // we're faking sync pairs for sync replies
1246 // --> we deliver to every slot starting with "receive"
1247 QByteArray slotSignature;
1248 QList<int>::iterator slotIter = slotIndexes.begin();
1249 while(slotIter != slotIndexes.end()) {
1250 slotSignature = QByteArray(_meta->method(*slotIter).signature());
1251 if(slotSignature.startsWith("receive")) {
1252 syncMap[slotSignature] = *slotIter;
1253 slotIter = slotIndexes.erase(slotIter);
1259 // find the proper sig -> slot matches
1260 QMetaMethod signal, slot;
1262 for(int signalIdx = 0; signalIdx < _meta->methodCount(); signalIdx++) {
1263 signal = _meta->method(signalIdx);
1264 if(signal.methodType() != QMetaMethod::Signal)
1268 foreach(int slotIdx, slotIndexes) {
1269 slot = _meta->method(slotIdx);
1270 if(methodsMatch(signal, slot)) {
1275 if(matchIdx != -1) {
1276 slotIndexes.removeAll(matchIdx);
1277 syncMap[QByteArray(signal.signature())] = matchIdx;
1285 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap() {
1286 if(_receiveMap.isEmpty()) {
1287 QHash<int, int> receiveMap;
1289 QMetaMethod requestSlot;
1290 QByteArray returnTypeName;
1291 QByteArray signature;
1292 QByteArray methodName;
1296 const int methodCount = _meta->methodCount();
1297 for(int i = 0; i < methodCount; i++) {
1298 requestSlot = _meta->method(i);
1299 if(requestSlot.methodType() != QMetaMethod::Slot)
1302 returnTypeName = requestSlot.typeName();
1303 if(QMetaType::Void == (QMetaType::Type)returnType(i))
1306 signature = QByteArray(requestSlot.signature());
1307 if(!signature.startsWith("request"))
1310 paramsPos = signature.indexOf('(');
1314 methodName = signature.left(paramsPos);
1315 params = signature.mid(paramsPos);
1317 methodName = methodName.replace("request", "receive");
1318 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1320 signature = QMetaObject::normalizedSignature(methodName + params);
1321 receiverId = _meta->indexOfSlot(signature);
1323 if(receiverId == -1) {
1324 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1325 receiverId = _meta->indexOfSlot(signature);
1328 if(receiverId != -1)
1329 receiveMap[i] = receiverId;
1331 _receiveMap = receiveMap;
1336 int SignalProxy::ExtendedMetaObject::updatedRemotelyId() {
1337 if(_updatedRemotelyId == -1) {
1338 _updatedRemotelyId = _meta->indexOfSignal("updatedRemotely()");
1340 return _updatedRemotelyId;
1343 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method) {
1344 QByteArray sig(method.signature());
1345 return sig.left(sig.indexOf("("));
1348 bool SignalProxy::ExtendedMetaObject::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) {
1349 // if we don't even have the same basename it's a sure NO
1350 QString baseName = methodBaseName(signal);
1351 if(baseName != methodBaseName(slot))
1354 // are the signatures compatible?
1355 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1358 // we take an educated guess if the signals and slots match
1359 QString signalsuffix = methodName(signal);
1360 QString slotprefix = methodName(slot);
1361 if(!baseName.isEmpty()) {
1362 signalsuffix = signalsuffix.mid(baseName.count()).toLower();
1363 slotprefix = slotprefix.left(slotprefix.count() - baseName.count()).toLower();
1366 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1367 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1371 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method) {
1372 QString methodname = QString(method.signature()).section("(", 0, 0);
1374 // determine where we have to chop:
1376 if(method.methodType() == QMetaMethod::Slot) {
1377 // we take evertyhing from the first uppercase char if it's slot
1378 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1379 if(upperCharPos == -1)
1381 methodname = methodname.mid(upperCharPos);
1383 // and if it's a signal we discard everything from the last uppercase char
1384 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1385 if(upperCharPos == -1)
1387 methodname = methodname.left(upperCharPos);
1390 methodname[0] = methodname[0].toUpper();