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 _signalRelay = new SignalRelay(this);
275 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
276 setHeartBeatInterval(30);
277 setMaxHeartBeatCount(2);
278 _heartBeatTimer.start();
283 void SignalProxy::initServer() {
286 void SignalProxy::initClient() {
287 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
290 bool SignalProxy::addPeer(QIODevice* iodev) {
294 if(_peers.contains(iodev))
297 if(proxyMode() == Client && !_peers.isEmpty()) {
298 qWarning("SignalProxy: only one peer allowed in client mode!");
302 if(!iodev->isOpen()) {
303 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
307 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
308 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
311 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
313 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
318 iodev->setParent(this);
320 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
322 if(_peers.count() == 1)
329 void SignalProxy::setHeartBeatInterval(int secs) {
330 if(secs != _heartBeatInterval) {
331 _heartBeatInterval = secs;
332 _heartBeatTimer.setInterval(secs * 1000);
336 void SignalProxy::setMaxHeartBeatCount(int max) {
337 _maxHeartBeatCount = max;
340 bool SignalProxy::addPeer(SignalProxy* proxy) {
344 if(proxyMode() == proxy->proxyMode()) {
345 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
349 if(_peers.contains(proxy)) {
353 if(proxyMode() == Client && !_peers.isEmpty()) {
354 qWarning("SignalProxy: only one peer allowed in client mode!");
358 _peers[proxy] = new SignalProxyPeer(this, proxy);
359 proxy->addPeer(this);
361 if(_peers.count() == 1)
368 void SignalProxy::removeAllPeers() {
369 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
370 // wee need to copy that list since we modify it in the loop
371 QList<QObject *> peers = _peers.keys();
372 foreach(QObject *peer, peers) {
377 void SignalProxy::removePeer(QObject* dev) {
378 if(_peers.isEmpty()) {
379 qWarning() << "SignalProxy::removePeer(): No peers in use!";
384 if(!_peers.contains(dev)) {
385 qWarning() << "SignalProxy: unknown Peer" << dev;
389 AbstractPeer *peer = _peers[dev];
392 disconnect(dev, 0, this, 0);
393 if(peer->type() == AbstractPeer::IODevicePeer)
394 emit peerRemoved(static_cast<QIODevice *>(dev));
396 if(peer->type() == AbstractPeer::SignalProxyPeer) {
397 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
398 if(proxy->_peers.contains(this))
399 proxy->removePeer(this);
402 if(dev->parent() == this)
413 void SignalProxy::removePeerBySender() {
414 removePeer(sender());
417 void SignalProxy::renameObject(const SyncableObject *obj, const QString &newname, const QString &oldname) {
418 if(proxyMode() == Client)
421 const QMetaObject *meta = obj->syncMetaObject();
422 const QByteArray className(meta->className());
423 objectRenamed(className, newname, oldname);
426 params << "__objectRenamed__" << className << newname << oldname;
427 dispatchSignal(RpcCall, params);
430 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
431 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
432 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
437 const QMetaObject *SignalProxy::metaObject(const QObject *obj) {
438 if(const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
439 return syncObject->syncMetaObject();
441 return obj->metaObject();
444 SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QMetaObject *meta) const {
445 if(_extendedMetaObjects.contains(meta))
446 return _extendedMetaObjects[meta];
451 SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta, bool checkConflicts) {
452 if(!_extendedMetaObjects.contains(meta)) {
453 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta, checkConflicts);
455 return _extendedMetaObjects[meta];
458 bool SignalProxy::attachSignal(QObject *sender, const char* signal, const QByteArray& sigName) {
459 const QMetaObject* meta = sender->metaObject();
460 QByteArray sig(meta->normalizedSignature(signal).mid(1));
461 int methodId = meta->indexOfMethod(sig.constData());
462 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
463 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
467 createExtendedMetaObject(meta);
468 _signalRelay->attachSignal(sender, methodId, sigName);
470 disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
471 connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
475 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
476 const QMetaObject* meta = recv->metaObject();
477 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
478 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
479 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
483 createExtendedMetaObject(meta);
485 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
486 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
488 disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
489 connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
493 void SignalProxy::synchronize(SyncableObject *obj) {
494 createExtendedMetaObject(obj, true);
496 // attaching as slave to receive sync Calls
497 QByteArray className(obj->syncMetaObject()->className());
498 _syncSlave[className][obj->objectName()] = obj;
500 if(proxyMode() == Server) {
501 obj->setInitialized();
502 emit objectInitialized(obj);
504 if(obj->isInitialized())
505 emit objectInitialized(obj);
510 obj->synchronize(this);
513 void SignalProxy::detachObject(QObject *obj) {
518 void SignalProxy::detachSignals(QObject *sender) {
519 _signalRelay->detachSignal(sender);
522 void SignalProxy::detachSlots(QObject* receiver) {
523 SlotHash::iterator slotIter = _attachedSlots.begin();
524 while(slotIter != _attachedSlots.end()) {
525 if(slotIter.value().first == receiver) {
526 slotIter = _attachedSlots.erase(slotIter);
532 void SignalProxy::stopSynchronize(SyncableObject *obj) {
533 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
534 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
535 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
536 while(classIter != _syncSlave.end()) {
537 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
538 classIter->remove(obj->objectName());
543 obj->stopSynchronize(this);
546 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
547 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
548 PeerHash::iterator peer = _peers.begin();
549 while(peer != _peers.end()) {
550 switch((*peer)->type()) {
551 case AbstractPeer::IODevicePeer:
553 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
555 ioPeer->dispatchPackedFunc(packedFunc);
557 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
560 case AbstractPeer::SignalProxyPeer:
561 (*peer)->dispatchSignal(requestType, params);
564 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
570 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
571 QVariantList params(packedFunc.toList());
573 if(params.isEmpty()) {
574 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
578 RequestType requestType = (RequestType)params.takeFirst().value<int>();
579 receivePeerSignal(sender, requestType, params);
582 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
583 switch(requestType) {
584 // list all RequestTypes that shouldnot trigger a heartbeat counter reset here
588 if(sender->type() == AbstractPeer::IODevicePeer) {
589 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(sender);
590 ioPeer->sentHeartBeats = 0;
594 // qDebug() << "SignalProxy::receivePeerSignal)" << requestType << params;
595 switch(requestType) {
598 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
600 handleSignal(params);
601 //handleSignal(params.takeFirst().toByteArray(), params);
605 handleSync(sender, params);
609 handleInitRequest(sender, params);
613 handleInitData(sender, params);
617 receiveHeartBeat(sender, params);
621 receiveHeartBeatReply(sender, params);
625 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
629 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
630 if(!_peers.contains(sender)) {
631 // 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.
632 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
635 receivePeerSignal(_peers[sender], requestType, params);
638 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
639 if(params.count() < 3) {
640 qWarning() << "received invalid Sync call" << params;
644 QByteArray className = params.takeFirst().toByteArray();
645 QString objectName = params.takeFirst().toString();
646 QByteArray slot = params.takeFirst().toByteArray();
648 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
649 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
654 SyncableObject *receiver = _syncSlave[className][objectName];
655 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
656 if(!eMeta->slotMap().contains(slot)) {
657 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
662 int slotId = eMeta->slotMap()[slot];
663 if(proxyMode() != eMeta->receiverMode(slotId)) {
664 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed. Wrong ProxyMode!", eMeta->methodName(slotId).constData());
668 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
669 if(!invokeSlot(receiver, slotId, params, returnValue)) {
670 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
675 if(returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
676 int receiverId = eMeta->receiveMap()[slotId];
677 QVariantList returnParams;
678 returnParams << className
680 << eMeta->methodName(receiverId);
681 //QByteArray(receiver->metaObject()->method(receiverId).signature());
682 if(eMeta->argTypes(receiverId).count() > 1)
683 returnParams << params;
684 returnParams << returnValue;
685 sender->dispatchSignal(Sync, returnParams);
688 // send emit update signal
689 invokeSlot(receiver, eMeta->updatedRemotelyId());
692 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
693 if(params.count() != 2) {
694 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
699 QByteArray className(params[0].toByteArray());
700 QString objectName(params[1].toString());
702 if(!_syncSlave.contains(className)) {
703 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
708 if(!_syncSlave[className].contains(objectName)) {
709 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
710 << className << objectName;
714 SyncableObject *obj = _syncSlave[className][objectName];
716 QVariantList params_;
721 sender->dispatchSignal(InitData, params_);
724 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
726 if(params.count() != 3) {
727 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
732 QByteArray className(params[0].toByteArray());
733 QString objectName(params[1].toString());
734 QVariantMap propertyMap(params[2].toMap());
736 if(!_syncSlave.contains(className)) {
737 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
742 if(!_syncSlave[className].contains(objectName)) {
743 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
744 << className << objectName;
748 SyncableObject *obj = _syncSlave[className][objectName];
749 setInitData(obj, propertyMap);
752 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
753 void SignalProxy::handleSignal(const QVariantList &data) {
754 QVariantList params = data;
755 QByteArray funcName = params.takeFirst().toByteArray();
759 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
760 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
761 receiver = (*slot).first;
762 methodId = (*slot).second;
763 if(!invokeSlot(receiver, methodId, params)) {
764 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
765 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
771 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
772 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
773 const QList<int> args = eMeta->argTypes(methodId);
774 const int numArgs = params.count() < args.count()
778 if(eMeta->minArgCount(methodId) > params.count()) {
779 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
783 void *_a[] = {0, // return type...
784 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
787 // check for argument compatibility and build params array
788 for(int i = 0; i < numArgs; i++) {
789 if(!params[i].isValid()) {
790 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());
791 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
794 if(args[i] != QMetaType::type(params[i].typeName())) {
795 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
798 _a[i+1] = const_cast<void *>(params[i].constData());
801 if(returnValue.type() != QVariant::Invalid)
802 _a[0] = const_cast<void *>(returnValue.constData());
804 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
805 ? Qt::DirectConnection
806 : Qt::QueuedConnection;
808 if(type == Qt::DirectConnection) {
809 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
811 qWarning() << "Queued Connections are not implemented yet";
812 // note to self: qmetaobject.cpp:990 ff
818 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
820 return invokeSlot(receiver, methodId, params, ret);
823 void SignalProxy::dataAvailable() {
824 // yet again. it's a private slot. no need for checks.
825 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
826 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
827 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
829 while(peer->readData(var))
830 receivePackedFunc(peer, var);
833 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
834 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
835 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
836 qWarning("SignalProxy: Can't call write on a closed device");
841 QDataStream out(&block, QIODevice::WriteOnly);
842 out.setVersion(QDataStream::Qt_4_2);
847 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
849 itemStream.setVersion(QDataStream::Qt_4_2);
852 rawItem = qCompress(rawItem);
859 out.device()->seek(0);
860 out << (quint32)(block.size() - sizeof(quint32));
865 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
870 in.setVersion(QDataStream::Qt_4_2);
873 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
877 if(blockSize > 1 << 22) {
878 disconnectDevice(dev, tr("Peer tried to send package larger than max package size!"));
883 disconnectDevice(dev, tr("Peer tried to send 0 byte package!"));
887 if(dev->bytesAvailable() < blockSize)
896 int nbytes = rawItem.size();
898 const char *data = rawItem.constData();
899 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
900 disconnectDevice(dev, tr("Peer sent corrupted compressed data!"));
905 rawItem = qUncompress(rawItem);
907 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
908 itemStream.setVersion(QDataStream::Qt_4_2);
914 if(!item.isValid()) {
915 disconnectDevice(dev, tr("Peer sent corrupt data: unable to load QVariant!"));
922 void SignalProxy::requestInit(SyncableObject *obj) {
923 if(proxyMode() == Server || obj->isInitialized())
927 params << obj->syncMetaObject()->className()
928 << obj->objectName();
929 dispatchSignal(InitRequest, params);
932 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
933 return obj->toVariantMap();
936 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
937 if(obj->isInitialized())
939 obj->fromVariantMap(properties);
940 obj->setInitialized();
941 emit objectInitialized(obj);
942 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
945 void SignalProxy::sendHeartBeat() {
946 QVariantList heartBeatParams;
947 heartBeatParams << QTime::currentTime();
948 QList<IODevicePeer *> toClose;
950 PeerHash::iterator peer = _peers.begin();
951 while(peer != _peers.end()) {
952 if((*peer)->type() == AbstractPeer::IODevicePeer) {
953 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
954 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
955 if(ioPeer->sentHeartBeats > 0) {
956 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
958 if(maxHeartBeatCount() >= 0 && ioPeer->sentHeartBeats >= maxHeartBeatCount())
959 toClose.append(ioPeer);
961 ioPeer->sentHeartBeats++;
966 foreach(IODevicePeer *ioPeer, toClose) {
967 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
968 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
973 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
974 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
977 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
978 if(peer->type() != AbstractPeer::IODevicePeer) {
979 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
983 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
984 ioPeer->sentHeartBeats = 0;
986 if(params.isEmpty()) {
987 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
991 QTime sendTime = params[0].value<QTime>();
992 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
995 void SignalProxy::customEvent(QEvent *event) {
996 switch(event->type()) {
999 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1000 receivePeerSignal(e->sender, e->requestType, e->params);
1006 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1007 removePeer(e->peer);
1015 void SignalProxy::sync_call__(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap) {
1016 // qDebug() << obj << modeType << "(" << _proxyMode << ")" << funcname;
1017 if(modeType != _proxyMode)
1020 ExtendedMetaObject *eMeta = extendedMetaObject(obj);
1022 QVariantList params;
1023 params << eMeta->metaObject()->className()
1024 << obj->objectName()
1025 << QByteArray(funcname);
1027 const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
1029 for(int i = 0; i < argTypes.size(); i++) {
1030 if(argTypes[i] == 0) {
1031 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
1032 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1035 params << QVariant(argTypes[i], va_arg(ap, void *));
1038 dispatchSignal(Sync, params);
1043 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1044 if(!reason.isEmpty())
1045 qWarning() << qPrintable(reason);
1046 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1048 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1052 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1054 if(proxyMode() == Client) {
1055 emit lagUpdated(lag);
1059 void SignalProxy::dumpProxyStats() {
1061 if(proxyMode() == Server)
1067 foreach(ObjectId oid, _syncSlave.values())
1068 slaveCount += oid.count();
1071 qDebug() << " Proxy Mode:" << mode;
1072 qDebug() << " attached Slots:" << _attachedSlots.count();
1073 qDebug() << " number of synced Slaves:" << slaveCount;
1074 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1077 void SignalProxy::updateSecureState() {
1078 bool wasSecure = _secure;
1080 _secure = !_peers.isEmpty();
1081 PeerHash::const_iterator peerIter;
1082 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1083 _secure &= (*peerIter)->isSecure();
1086 if(wasSecure != _secure)
1087 emit secureStateChanged(_secure);
1091 // ==================================================
1092 // ExtendedMetaObject
1093 // ==================================================
1094 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
1096 _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
1098 for(int i = 0; i < _meta->methodCount(); i++) {
1099 if(_meta->method(i).methodType() != QMetaMethod::Slot)
1102 if(QByteArray(_meta->method(i).signature()).contains('*'))
1103 continue; // skip methods with ptr params
1105 QByteArray method = methodName(_meta->method(i));
1106 if(method.startsWith("init"))
1107 continue; // skip initializers
1109 if(_methodIds.contains(method)) {
1110 /* funny... moc creates for methods containing default parameters multiple metaMethod with separate methodIds.
1111 we don't care... we just need the full fledged version
1113 const QMetaMethod ¤t = _meta->method(_methodIds[method]);
1114 const QMetaMethod &candidate = _meta->method(i);
1115 if(current.parameterTypes().count() > candidate.parameterTypes().count()) {
1116 int minCount = candidate.parameterTypes().count();
1117 QList<QByteArray> commonParams = current.parameterTypes().mid(0, minCount);
1118 if(commonParams == candidate.parameterTypes())
1119 continue; // we already got the full featured version
1121 int minCount = current.parameterTypes().count();
1122 QList<QByteArray> commonParams = candidate.parameterTypes().mid(0, minCount);
1123 if(commonParams == current.parameterTypes()) {
1124 _methodIds[method] = i; // use the new one
1128 if(checkConflicts) {
1129 qWarning() << "class" << meta->className() << "contains overloaded methods which is currently not supported!";
1130 qWarning() << " - " << _meta->method(i).signature() << "conflicts with" << _meta->method(_methodIds[method]).signature();
1134 _methodIds[method] = i;
1138 const SignalProxy::ExtendedMetaObject::MethodDescriptor &SignalProxy::ExtendedMetaObject::methodDescriptor(int methodId) {
1139 if(!_methods.contains(methodId)) {
1140 _methods[methodId] = MethodDescriptor(_meta->method(methodId));
1142 return _methods[methodId];
1145 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap() {
1146 if(_receiveMap.isEmpty()) {
1147 QHash<int, int> receiveMap;
1149 QMetaMethod requestSlot;
1150 QByteArray returnTypeName;
1151 QByteArray signature;
1152 QByteArray methodName;
1156 const int methodCount = _meta->methodCount();
1157 for(int i = 0; i < methodCount; i++) {
1158 requestSlot = _meta->method(i);
1159 if(requestSlot.methodType() != QMetaMethod::Slot)
1162 returnTypeName = requestSlot.typeName();
1163 if(QMetaType::Void == (QMetaType::Type)returnType(i))
1166 signature = QByteArray(requestSlot.signature());
1167 if(!signature.startsWith("request"))
1170 paramsPos = signature.indexOf('(');
1174 methodName = signature.left(paramsPos);
1175 params = signature.mid(paramsPos);
1177 methodName = methodName.replace("request", "receive");
1178 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1180 signature = QMetaObject::normalizedSignature(methodName + params);
1181 receiverId = _meta->indexOfSlot(signature);
1183 if(receiverId == -1) {
1184 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1185 receiverId = _meta->indexOfSlot(signature);
1188 if(receiverId != -1) {
1189 receiveMap[i] = receiverId;
1192 _receiveMap = receiveMap;
1197 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method) {
1198 QByteArray sig(method.signature());
1199 return sig.left(sig.indexOf("("));
1202 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method) {
1203 QString methodname = QString(method.signature()).section("(", 0, 0);
1205 // determine where we have to chop:
1207 if(method.methodType() == QMetaMethod::Slot) {
1208 // we take evertyhing from the first uppercase char if it's slot
1209 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1210 if(upperCharPos == -1)
1212 methodname = methodname.mid(upperCharPos);
1214 // and if it's a signal we discard everything from the last uppercase char
1215 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1216 if(upperCharPos == -1)
1218 methodname = methodname.left(upperCharPos);
1221 methodname[0] = methodname[0].toUpper();
1226 SignalProxy::ExtendedMetaObject::MethodDescriptor::MethodDescriptor(const QMetaMethod &method)
1227 : _methodName(SignalProxy::ExtendedMetaObject::methodName(method)),
1228 _returnType(QMetaType::type(method.typeName()))
1230 // determine argTypes
1231 QList<QByteArray> paramTypes = method.parameterTypes();
1232 QList<int> argTypes;
1233 for(int i = 0; i < paramTypes.count(); i++) {
1234 argTypes.append(QMetaType::type(paramTypes[i]));
1236 _argTypes = argTypes;
1238 // determine minArgCount
1239 QString signature(method.signature());
1240 _minArgCount = method.parameterTypes().count() - signature.count("=");
1242 _receiverMode = (_methodName.startsWith("request"))
1243 ? SignalProxy::Server
1244 : SignalProxy::Client;