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::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(parent), _proxy(parent) {}
73 inline SignalProxy *proxy() const { return _proxy; }
75 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
77 void attachSignal(QObject *sender, int signalId, const QByteArray &funcName);
78 void detachSignal(QObject *sender, int signalId = -1);
85 Signal(QObject *sender, int sigId, const QByteArray &signature) : sender(sender), signalId(sigId), signature(signature) {}
86 Signal() : sender(0), signalId(-1) {}
90 QHash<int, Signal> _slots;
93 void SignalProxy::SignalRelay::attachSignal(QObject *sender, int signalId, const QByteArray &funcName) {
94 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
95 // all connected methodIds are offset by the standard methodCount of QObject
97 for(int i = 0;; i++) {
98 if(!_slots.contains(i)) {
105 if(!funcName.isEmpty()) {
106 fn = QMetaObject::normalizedSignature(funcName);
108 fn = SIGNAL(fakeMethodSignature());
109 fn = fn.replace("fakeMethodSignature()", sender->metaObject()->method(signalId).signature());
112 _slots[slotId] = Signal(sender, signalId, fn);
114 QMetaObject::connect(sender, signalId, this, QObject::staticMetaObject.methodCount() + slotId);
117 void SignalProxy::SignalRelay::detachSignal(QObject *sender, int signalId) {
118 QHash<int, Signal>::iterator slotIter = _slots.begin();
119 while(slotIter != _slots.end()) {
120 if(slotIter->sender == sender && (signalId == -1 || slotIter->signalId == signalId)) {
121 slotIter = _slots.erase(slotIter);
130 int SignalProxy::SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
131 _id = QObject::qt_metacall(_c, _id, _a);
135 if(_c == QMetaObject::InvokeMetaMethod) {
136 if(_slots.contains(_id)) {
137 QObject *caller = sender();
139 SignalProxy::ExtendedMetaObject *eMeta = proxy()->extendedMetaObject(caller->metaObject());
142 const Signal &signal = _slots[_id];
145 params << signal.signature;
147 const QList<int> &argTypes = eMeta->argTypes(signal.signalId);
148 for(int i = 0; i < argTypes.size(); i++) {
149 if(argTypes[i] == 0) {
150 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());
151 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
154 params << QVariant(argTypes[i], _a[i+1]);
157 proxy()->dispatchSignal(SignalProxy::RpcCall, params);
159 _id -= _slots.count();
164 // ==================================================
166 // ==================================================
167 void SignalProxy::IODevicePeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
168 QVariantList packedFunc;
169 packedFunc << (qint16)requestType
171 dispatchPackedFunc(QVariant(packedFunc));
174 bool SignalProxy::IODevicePeer::isSecure() const {
176 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(_device);
178 return sslSocket->isEncrypted() || sslSocket->localAddress() == QHostAddress::LocalHost || sslSocket->localAddress() == QHostAddress::LocalHostIPv6;
181 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
183 return socket->localAddress() == QHostAddress::LocalHost || socket->localAddress() == QHostAddress::LocalHostIPv6;
188 QString SignalProxy::IODevicePeer::address() const {
189 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
191 return socket->peerAddress().toString();
196 void SignalProxy::SignalProxyPeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
197 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
198 ? Qt::DirectConnection
199 : Qt::QueuedConnection;
201 if(type == Qt::DirectConnection) {
202 receiver->receivePeerSignal(sender, requestType, params);
204 QCoreApplication::postEvent(receiver, new PeerSignalEvent(sender, requestType, params));
208 // ==================================================
210 // ==================================================
211 SignalProxy::SignalProxy(QObject* parent)
214 setProxyMode(Client);
218 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
225 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
233 SignalProxy::~SignalProxy() {
234 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
235 while(classIter != _syncSlave.end()) {
236 ObjectId::iterator objIter = classIter->begin();
237 while(objIter != classIter->end()) {
238 SyncableObject *obj = objIter.value();
239 objIter = classIter->erase(objIter);
240 obj->stopSynchronize(this);
249 void SignalProxy::setProxyMode(ProxyMode mode) {
250 PeerHash::iterator peer = _peers.begin();
251 while(peer != _peers.end()) {
252 if((*peer)->type() != AbstractPeer::IODevicePeer) {
253 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
254 if(ioPeer->isOpen()) {
255 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
259 if((*peer)->type() != AbstractPeer::SignalProxyPeer) {
260 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
273 void SignalProxy::init() {
274 _heartBeatInterval = 0;
275 _maxHeartBeatCount = 0;
276 _signalRelay = new SignalRelay(this);
277 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
278 setHeartBeatInterval(30);
279 setMaxHeartBeatCount(2);
280 _heartBeatTimer.start();
285 void SignalProxy::initServer() {
288 void SignalProxy::initClient() {
289 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
292 bool SignalProxy::addPeer(QIODevice* iodev) {
296 if(_peers.contains(iodev))
299 if(proxyMode() == Client && !_peers.isEmpty()) {
300 qWarning("SignalProxy: only one peer allowed in client mode!");
304 if(!iodev->isOpen()) {
305 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
309 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
310 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
313 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
315 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
320 iodev->setParent(this);
322 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
324 if(_peers.count() == 1)
331 void SignalProxy::setHeartBeatInterval(int secs) {
332 if(secs != _heartBeatInterval) {
333 _heartBeatInterval = secs;
334 _heartBeatTimer.setInterval(secs * 1000);
338 void SignalProxy::setMaxHeartBeatCount(int max) {
339 _maxHeartBeatCount = max;
342 bool SignalProxy::addPeer(SignalProxy* proxy) {
346 if(proxyMode() == proxy->proxyMode()) {
347 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
351 if(_peers.contains(proxy)) {
355 if(proxyMode() == Client && !_peers.isEmpty()) {
356 qWarning("SignalProxy: only one peer allowed in client mode!");
360 _peers[proxy] = new SignalProxyPeer(this, proxy);
361 proxy->addPeer(this);
363 if(_peers.count() == 1)
370 void SignalProxy::removeAllPeers() {
371 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
372 // wee need to copy that list since we modify it in the loop
373 QList<QObject *> peers = _peers.keys();
374 foreach(QObject *peer, peers) {
379 void SignalProxy::removePeer(QObject* dev) {
380 if(_peers.isEmpty()) {
381 qWarning() << "SignalProxy::removePeer(): No peers in use!";
386 if(!_peers.contains(dev)) {
387 qWarning() << "SignalProxy: unknown Peer" << dev;
391 AbstractPeer *peer = _peers[dev];
394 disconnect(dev, 0, this, 0);
395 if(peer->type() == AbstractPeer::IODevicePeer)
396 emit peerRemoved(static_cast<QIODevice *>(dev));
398 if(peer->type() == AbstractPeer::SignalProxyPeer) {
399 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
400 if(proxy->_peers.contains(this))
401 proxy->removePeer(this);
404 if(dev->parent() == this)
415 void SignalProxy::removePeerBySender() {
416 removePeer(sender());
419 void SignalProxy::renameObject(const SyncableObject *obj, const QString &newname, const QString &oldname) {
420 if(proxyMode() == Client)
423 const QMetaObject *meta = obj->syncMetaObject();
424 const QByteArray className(meta->className());
425 objectRenamed(className, newname, oldname);
428 params << "__objectRenamed__" << className << newname << oldname;
429 dispatchSignal(RpcCall, params);
432 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
433 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
434 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
439 const QMetaObject *SignalProxy::metaObject(const QObject *obj) {
440 if(const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
441 return syncObject->syncMetaObject();
443 return obj->metaObject();
446 SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QMetaObject *meta) const {
447 if(_extendedMetaObjects.contains(meta))
448 return _extendedMetaObjects[meta];
453 SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta, bool checkConflicts) {
454 if(!_extendedMetaObjects.contains(meta)) {
455 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta, checkConflicts);
457 return _extendedMetaObjects[meta];
460 bool SignalProxy::attachSignal(QObject *sender, const char* signal, const QByteArray& sigName) {
461 const QMetaObject* meta = sender->metaObject();
462 QByteArray sig(meta->normalizedSignature(signal).mid(1));
463 int methodId = meta->indexOfMethod(sig.constData());
464 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
465 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
469 createExtendedMetaObject(meta);
470 _signalRelay->attachSignal(sender, methodId, sigName);
472 disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
473 connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
477 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
478 const QMetaObject* meta = recv->metaObject();
479 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
480 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
481 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
485 createExtendedMetaObject(meta);
487 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
488 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
490 disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
491 connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
495 void SignalProxy::synchronize(SyncableObject *obj) {
496 createExtendedMetaObject(obj, true);
498 // attaching as slave to receive sync Calls
499 QByteArray className(obj->syncMetaObject()->className());
500 _syncSlave[className][obj->objectName()] = obj;
502 if(proxyMode() == Server) {
503 obj->setInitialized();
504 emit objectInitialized(obj);
506 if(obj->isInitialized())
507 emit objectInitialized(obj);
512 obj->synchronize(this);
515 void SignalProxy::detachObject(QObject *obj) {
520 void SignalProxy::detachSignals(QObject *sender) {
521 _signalRelay->detachSignal(sender);
524 void SignalProxy::detachSlots(QObject* receiver) {
525 SlotHash::iterator slotIter = _attachedSlots.begin();
526 while(slotIter != _attachedSlots.end()) {
527 if(slotIter.value().first == receiver) {
528 slotIter = _attachedSlots.erase(slotIter);
534 void SignalProxy::stopSynchronize(SyncableObject *obj) {
535 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
536 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
537 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
538 while(classIter != _syncSlave.end()) {
539 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
540 classIter->remove(obj->objectName());
545 obj->stopSynchronize(this);
548 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
549 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
550 PeerHash::iterator peer = _peers.begin();
551 while(peer != _peers.end()) {
552 switch((*peer)->type()) {
553 case AbstractPeer::IODevicePeer:
555 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
557 ioPeer->dispatchPackedFunc(packedFunc);
559 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
562 case AbstractPeer::SignalProxyPeer:
563 (*peer)->dispatchSignal(requestType, params);
566 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
572 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
573 QVariantList params(packedFunc.toList());
575 if(params.isEmpty()) {
576 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
580 RequestType requestType = (RequestType)params.takeFirst().value<int>();
581 receivePeerSignal(sender, requestType, params);
584 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
585 switch(requestType) {
586 // list all RequestTypes that shouldnot trigger a heartbeat counter reset here
590 if(sender->type() == AbstractPeer::IODevicePeer) {
591 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(sender);
592 ioPeer->sentHeartBeats = 0;
596 // qDebug() << "SignalProxy::receivePeerSignal)" << requestType << params;
597 switch(requestType) {
600 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
602 handleSignal(params);
603 //handleSignal(params.takeFirst().toByteArray(), params);
607 handleSync(sender, params);
611 handleInitRequest(sender, params);
615 handleInitData(sender, params);
619 receiveHeartBeat(sender, params);
623 receiveHeartBeatReply(sender, params);
627 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
631 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
632 if(!_peers.contains(sender)) {
633 // 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.
634 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
637 receivePeerSignal(_peers[sender], requestType, params);
640 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
641 if(params.count() < 3) {
642 qWarning() << "received invalid Sync call" << params;
646 QByteArray className = params.takeFirst().toByteArray();
647 QString objectName = params.takeFirst().toString();
648 QByteArray slot = params.takeFirst().toByteArray();
650 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
651 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
656 SyncableObject *receiver = _syncSlave[className][objectName];
657 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
658 if(!eMeta->slotMap().contains(slot)) {
659 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
664 int slotId = eMeta->slotMap()[slot];
665 if(proxyMode() != eMeta->receiverMode(slotId)) {
666 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed. Wrong ProxyMode!", eMeta->methodName(slotId).constData());
670 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
671 if(!invokeSlot(receiver, slotId, params, returnValue)) {
672 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
677 if(returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
678 int receiverId = eMeta->receiveMap()[slotId];
679 QVariantList returnParams;
680 returnParams << className
682 << eMeta->methodName(receiverId);
683 //QByteArray(receiver->metaObject()->method(receiverId).signature());
684 if(eMeta->argTypes(receiverId).count() > 1)
685 returnParams << params;
686 returnParams << returnValue;
687 sender->dispatchSignal(Sync, returnParams);
690 // send emit update signal
691 invokeSlot(receiver, eMeta->updatedRemotelyId());
694 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
695 if(params.count() != 2) {
696 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
701 QByteArray className(params[0].toByteArray());
702 QString objectName(params[1].toString());
704 if(!_syncSlave.contains(className)) {
705 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
710 if(!_syncSlave[className].contains(objectName)) {
711 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
712 << className << objectName;
716 SyncableObject *obj = _syncSlave[className][objectName];
718 QVariantList params_;
723 sender->dispatchSignal(InitData, params_);
726 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
728 if(params.count() != 3) {
729 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
734 QByteArray className(params[0].toByteArray());
735 QString objectName(params[1].toString());
736 QVariantMap propertyMap(params[2].toMap());
738 if(!_syncSlave.contains(className)) {
739 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
744 if(!_syncSlave[className].contains(objectName)) {
745 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
746 << className << objectName;
750 SyncableObject *obj = _syncSlave[className][objectName];
751 setInitData(obj, propertyMap);
754 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
755 void SignalProxy::handleSignal(const QVariantList &data) {
756 QVariantList params = data;
757 QByteArray funcName = params.takeFirst().toByteArray();
761 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
762 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
763 receiver = (*slot).first;
764 methodId = (*slot).second;
765 if(!invokeSlot(receiver, methodId, params)) {
766 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
767 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
773 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
774 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
775 const QList<int> args = eMeta->argTypes(methodId);
776 const int numArgs = params.count() < args.count()
780 if(eMeta->minArgCount(methodId) > params.count()) {
781 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
785 void *_a[] = {0, // return type...
786 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
789 // check for argument compatibility and build params array
790 for(int i = 0; i < numArgs; i++) {
791 if(!params[i].isValid()) {
792 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());
793 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
796 if(args[i] != QMetaType::type(params[i].typeName())) {
797 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
800 _a[i+1] = const_cast<void *>(params[i].constData());
803 if(returnValue.type() != QVariant::Invalid)
804 _a[0] = const_cast<void *>(returnValue.constData());
806 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
807 ? Qt::DirectConnection
808 : Qt::QueuedConnection;
810 if(type == Qt::DirectConnection) {
811 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
813 qWarning() << "Queued Connections are not implemented yet";
814 // note to self: qmetaobject.cpp:990 ff
820 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
822 return invokeSlot(receiver, methodId, params, ret);
825 void SignalProxy::dataAvailable() {
826 // yet again. it's a private slot. no need for checks.
827 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
828 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
829 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
831 while(peer->readData(var))
832 receivePackedFunc(peer, var);
835 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
836 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
837 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
838 qWarning("SignalProxy: Can't call write on a closed device");
843 QDataStream out(&block, QIODevice::WriteOnly);
844 out.setVersion(QDataStream::Qt_4_2);
849 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
851 itemStream.setVersion(QDataStream::Qt_4_2);
854 rawItem = qCompress(rawItem);
861 out.device()->seek(0);
862 out << (quint32)(block.size() - sizeof(quint32));
867 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
872 in.setVersion(QDataStream::Qt_4_2);
875 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
879 if(blockSize > 1 << 22) {
880 disconnectDevice(dev, tr("Peer tried to send package larger than max package size!"));
885 disconnectDevice(dev, tr("Peer tried to send 0 byte package!"));
889 if(dev->bytesAvailable() < blockSize)
898 int nbytes = rawItem.size();
900 const char *data = rawItem.constData();
901 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
902 disconnectDevice(dev, tr("Peer sent corrupted compressed data!"));
907 rawItem = qUncompress(rawItem);
909 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
910 itemStream.setVersion(QDataStream::Qt_4_2);
916 if(!item.isValid()) {
917 disconnectDevice(dev, tr("Peer sent corrupt data: unable to load QVariant!"));
924 void SignalProxy::requestInit(SyncableObject *obj) {
925 if(proxyMode() == Server || obj->isInitialized())
929 params << obj->syncMetaObject()->className()
930 << obj->objectName();
931 dispatchSignal(InitRequest, params);
934 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
935 return obj->toVariantMap();
938 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
939 if(obj->isInitialized())
941 obj->fromVariantMap(properties);
942 obj->setInitialized();
943 emit objectInitialized(obj);
944 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
947 void SignalProxy::sendHeartBeat() {
948 QVariantList heartBeatParams;
949 heartBeatParams << QTime::currentTime();
950 QList<IODevicePeer *> toClose;
952 PeerHash::iterator peer = _peers.begin();
953 while(peer != _peers.end()) {
954 if((*peer)->type() == AbstractPeer::IODevicePeer) {
955 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
956 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
957 if(ioPeer->sentHeartBeats > 0) {
958 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
960 if(maxHeartBeatCount() >= 0 && ioPeer->sentHeartBeats >= maxHeartBeatCount())
961 toClose.append(ioPeer);
963 ioPeer->sentHeartBeats++;
968 foreach(IODevicePeer *ioPeer, toClose) {
969 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
970 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
975 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
976 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
979 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
980 if(peer->type() != AbstractPeer::IODevicePeer) {
981 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
985 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
986 ioPeer->sentHeartBeats = 0;
988 if(params.isEmpty()) {
989 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
993 QTime sendTime = params[0].value<QTime>();
994 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
997 void SignalProxy::customEvent(QEvent *event) {
998 switch(+event->type()) {
1001 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1002 receivePeerSignal(e->sender, e->requestType, e->params);
1008 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1009 removePeer(e->peer);
1017 void SignalProxy::sync_call__(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap) {
1018 // qDebug() << obj << modeType << "(" << _proxyMode << ")" << funcname;
1019 if(modeType != _proxyMode)
1022 ExtendedMetaObject *eMeta = extendedMetaObject(obj);
1024 QVariantList params;
1025 params << eMeta->metaObject()->className()
1026 << obj->objectName()
1027 << QByteArray(funcname);
1029 const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
1031 for(int i = 0; i < argTypes.size(); i++) {
1032 if(argTypes[i] == 0) {
1033 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
1034 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1037 params << QVariant(argTypes[i], va_arg(ap, void *));
1040 dispatchSignal(Sync, params);
1045 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1046 if(!reason.isEmpty())
1047 qWarning() << qPrintable(reason);
1048 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1050 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1054 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1056 if(proxyMode() == Client) {
1057 emit lagUpdated(lag);
1061 void SignalProxy::dumpProxyStats() {
1063 if(proxyMode() == Server)
1069 foreach(ObjectId oid, _syncSlave.values())
1070 slaveCount += oid.count();
1073 qDebug() << " Proxy Mode:" << mode;
1074 qDebug() << " attached Slots:" << _attachedSlots.count();
1075 qDebug() << " number of synced Slaves:" << slaveCount;
1076 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1079 void SignalProxy::updateSecureState() {
1080 bool wasSecure = _secure;
1082 _secure = !_peers.isEmpty();
1083 PeerHash::const_iterator peerIter;
1084 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1085 _secure &= (*peerIter)->isSecure();
1088 if(wasSecure != _secure)
1089 emit secureStateChanged(_secure);
1093 // ==================================================
1094 // ExtendedMetaObject
1095 // ==================================================
1096 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
1098 _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
1100 for(int i = 0; i < _meta->methodCount(); i++) {
1101 if(_meta->method(i).methodType() != QMetaMethod::Slot)
1104 if(QByteArray(_meta->method(i).signature()).contains('*'))
1105 continue; // skip methods with ptr params
1107 QByteArray method = methodName(_meta->method(i));
1108 if(method.startsWith("init"))
1109 continue; // skip initializers
1111 if(_methodIds.contains(method)) {
1112 /* funny... moc creates for methods containing default parameters multiple metaMethod with separate methodIds.
1113 we don't care... we just need the full fledged version
1115 const QMetaMethod ¤t = _meta->method(_methodIds[method]);
1116 const QMetaMethod &candidate = _meta->method(i);
1117 if(current.parameterTypes().count() > candidate.parameterTypes().count()) {
1118 int minCount = candidate.parameterTypes().count();
1119 QList<QByteArray> commonParams = current.parameterTypes().mid(0, minCount);
1120 if(commonParams == candidate.parameterTypes())
1121 continue; // we already got the full featured version
1123 int minCount = current.parameterTypes().count();
1124 QList<QByteArray> commonParams = candidate.parameterTypes().mid(0, minCount);
1125 if(commonParams == current.parameterTypes()) {
1126 _methodIds[method] = i; // use the new one
1130 if(checkConflicts) {
1131 qWarning() << "class" << meta->className() << "contains overloaded methods which is currently not supported!";
1132 qWarning() << " - " << _meta->method(i).signature() << "conflicts with" << _meta->method(_methodIds[method]).signature();
1136 _methodIds[method] = i;
1140 const SignalProxy::ExtendedMetaObject::MethodDescriptor &SignalProxy::ExtendedMetaObject::methodDescriptor(int methodId) {
1141 if(!_methods.contains(methodId)) {
1142 _methods[methodId] = MethodDescriptor(_meta->method(methodId));
1144 return _methods[methodId];
1147 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap() {
1148 if(_receiveMap.isEmpty()) {
1149 QHash<int, int> receiveMap;
1151 QMetaMethod requestSlot;
1152 QByteArray returnTypeName;
1153 QByteArray signature;
1154 QByteArray methodName;
1158 const int methodCount = _meta->methodCount();
1159 for(int i = 0; i < methodCount; i++) {
1160 requestSlot = _meta->method(i);
1161 if(requestSlot.methodType() != QMetaMethod::Slot)
1164 returnTypeName = requestSlot.typeName();
1165 if(QMetaType::Void == (QMetaType::Type)returnType(i))
1168 signature = QByteArray(requestSlot.signature());
1169 if(!signature.startsWith("request"))
1172 paramsPos = signature.indexOf('(');
1176 methodName = signature.left(paramsPos);
1177 params = signature.mid(paramsPos);
1179 methodName = methodName.replace("request", "receive");
1180 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1182 signature = QMetaObject::normalizedSignature(methodName + params);
1183 receiverId = _meta->indexOfSlot(signature);
1185 if(receiverId == -1) {
1186 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1187 receiverId = _meta->indexOfSlot(signature);
1190 if(receiverId != -1) {
1191 receiveMap[i] = receiverId;
1194 _receiveMap = receiveMap;
1199 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method) {
1200 QByteArray sig(method.signature());
1201 return sig.left(sig.indexOf("("));
1204 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method) {
1205 QString methodname = QString(method.signature()).section("(", 0, 0);
1207 // determine where we have to chop:
1209 if(method.methodType() == QMetaMethod::Slot) {
1210 // we take evertyhing from the first uppercase char if it's slot
1211 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1212 if(upperCharPos == -1)
1214 methodname = methodname.mid(upperCharPos);
1216 // and if it's a signal we discard everything from the last uppercase char
1217 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1218 if(upperCharPos == -1)
1220 methodname = methodname.left(upperCharPos);
1223 methodname[0] = methodname[0].toUpper();
1228 SignalProxy::ExtendedMetaObject::MethodDescriptor::MethodDescriptor(const QMetaMethod &method)
1229 : _methodName(SignalProxy::ExtendedMetaObject::methodName(method)),
1230 _returnType(QMetaType::type(method.typeName()))
1232 // determine argTypes
1233 QList<QByteArray> paramTypes = method.parameterTypes();
1234 QList<int> argTypes;
1235 for(int i = 0; i < paramTypes.count(); i++) {
1236 argTypes.append(QMetaType::type(paramTypes[i]));
1238 _argTypes = argTypes;
1240 // determine minArgCount
1241 QString signature(method.signature());
1242 _minArgCount = method.parameterTypes().count() - signature.count("=");
1244 _receiverMode = (_methodName.startsWith("request"))
1245 ? SignalProxy::Server
1246 : SignalProxy::Client;