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 _heartBeatTimer.start(30 * 1000);
281 void SignalProxy::initServer() {
284 void SignalProxy::initClient() {
285 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
288 bool SignalProxy::addPeer(QIODevice* iodev) {
292 if(_peers.contains(iodev))
295 if(proxyMode() == Client && !_peers.isEmpty()) {
296 qWarning("SignalProxy: only one peer allowed in client mode!");
300 if(!iodev->isOpen()) {
301 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
305 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
306 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
309 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
311 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
316 iodev->setParent(this);
318 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
320 if(_peers.count() == 1)
327 bool SignalProxy::addPeer(SignalProxy* proxy) {
331 if(proxyMode() == proxy->proxyMode()) {
332 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
336 if(_peers.contains(proxy)) {
340 if(proxyMode() == Client && !_peers.isEmpty()) {
341 qWarning("SignalProxy: only one peer allowed in client mode!");
345 _peers[proxy] = new SignalProxyPeer(this, proxy);
346 proxy->addPeer(this);
348 if(_peers.count() == 1)
355 void SignalProxy::removeAllPeers() {
356 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
357 // wee need to copy that list since we modify it in the loop
358 QList<QObject *> peers = _peers.keys();
359 foreach(QObject *peer, peers) {
364 void SignalProxy::removePeer(QObject* dev) {
365 if(_peers.isEmpty()) {
366 qWarning() << "SignalProxy::removePeer(): No peers in use!";
371 if(!_peers.contains(dev)) {
372 qWarning() << "SignalProxy: unknown Peer" << dev;
376 AbstractPeer *peer = _peers[dev];
379 disconnect(dev, 0, this, 0);
380 if(peer->type() == AbstractPeer::IODevicePeer)
381 emit peerRemoved(static_cast<QIODevice *>(dev));
383 if(peer->type() == AbstractPeer::SignalProxyPeer) {
384 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
385 if(proxy->_peers.contains(this))
386 proxy->removePeer(this);
389 if(dev->parent() == this)
400 void SignalProxy::removePeerBySender() {
401 removePeer(sender());
404 void SignalProxy::renameObject(const SyncableObject *obj, const QString &newname, const QString &oldname) {
405 if(proxyMode() == Client)
408 const QMetaObject *meta = obj->syncMetaObject();
409 const QByteArray className(meta->className());
410 objectRenamed(className, newname, oldname);
413 params << "__objectRenamed__" << className << newname << oldname;
414 dispatchSignal(RpcCall, params);
417 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
418 if(proxyMode() == Server)
421 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
422 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
427 const QMetaObject *SignalProxy::metaObject(const QObject *obj) {
428 if(const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
429 return syncObject->syncMetaObject();
431 return obj->metaObject();
434 SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QMetaObject *meta) const {
435 if(_extendedMetaObjects.contains(meta))
436 return _extendedMetaObjects[meta];
441 SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta, bool checkConflicts) {
442 if(!_extendedMetaObjects.contains(meta)) {
443 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta, checkConflicts);
445 return _extendedMetaObjects[meta];
448 bool SignalProxy::attachSignal(QObject *sender, const char* signal, const QByteArray& sigName) {
449 const QMetaObject* meta = sender->metaObject();
450 QByteArray sig(meta->normalizedSignature(signal).mid(1));
451 int methodId = meta->indexOfMethod(sig.constData());
452 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
453 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
457 createExtendedMetaObject(meta);
458 _signalRelay->attachSignal(sender, methodId, sigName);
460 disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
461 connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
465 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
466 const QMetaObject* meta = recv->metaObject();
467 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
468 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
469 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
473 createExtendedMetaObject(meta);
475 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
476 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
478 disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
479 connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
483 void SignalProxy::synchronize(SyncableObject *obj) {
484 createExtendedMetaObject(obj, true);
486 // attaching as slave to receive sync Calls
487 QByteArray className(obj->syncMetaObject()->className());
488 _syncSlave[className][obj->objectName()] = obj;
490 if(proxyMode() == Server) {
491 obj->setInitialized();
492 emit objectInitialized(obj);
494 if(obj->isInitialized())
495 emit objectInitialized(obj);
500 obj->synchronize(this);
503 void SignalProxy::detachObject(QObject *obj) {
508 void SignalProxy::detachSignals(QObject *sender) {
509 _signalRelay->detachSignal(sender);
512 void SignalProxy::detachSlots(QObject* receiver) {
513 SlotHash::iterator slotIter = _attachedSlots.begin();
514 while(slotIter != _attachedSlots.end()) {
515 if(slotIter.value().first == receiver) {
516 slotIter = _attachedSlots.erase(slotIter);
522 void SignalProxy::stopSynchronize(SyncableObject *obj) {
523 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
524 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
525 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
526 while(classIter != _syncSlave.end()) {
527 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
528 classIter->remove(obj->objectName());
533 obj->stopSynchronize(this);
536 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
537 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
538 PeerHash::iterator peer = _peers.begin();
539 while(peer != _peers.end()) {
540 switch((*peer)->type()) {
541 case AbstractPeer::IODevicePeer:
543 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
545 ioPeer->dispatchPackedFunc(packedFunc);
547 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
550 case AbstractPeer::SignalProxyPeer:
551 (*peer)->dispatchSignal(requestType, params);
554 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
560 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
561 QVariantList params(packedFunc.toList());
563 if(params.isEmpty()) {
564 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
568 RequestType requestType = (RequestType)params.takeFirst().value<int>();
569 receivePeerSignal(sender, requestType, params);
572 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
573 switch(requestType) {
574 // list all RequestTypes that shouldnot trigger a heartbeat counter reset here
578 if(sender->type() == AbstractPeer::IODevicePeer) {
579 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(sender);
580 ioPeer->sentHeartBeats = 0;
584 // qDebug() << "SignalProxy::receivePeerSignal)" << requestType << params;
585 switch(requestType) {
588 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
590 handleSignal(params);
591 //handleSignal(params.takeFirst().toByteArray(), params);
595 handleSync(sender, params);
599 handleInitRequest(sender, params);
603 handleInitData(sender, params);
607 receiveHeartBeat(sender, params);
611 receiveHeartBeatReply(sender, params);
615 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
619 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
620 if(!_peers.contains(sender)) {
621 // 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.
622 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
625 receivePeerSignal(_peers[sender], requestType, params);
628 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
629 if(params.count() < 3) {
630 qWarning() << "received invalid Sync call" << params;
634 QByteArray className = params.takeFirst().toByteArray();
635 QString objectName = params.takeFirst().toString();
636 QByteArray slot = params.takeFirst().toByteArray();
638 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
639 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
644 SyncableObject *receiver = _syncSlave[className][objectName];
645 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
646 if(!eMeta->slotMap().contains(slot)) {
647 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
652 int slotId = eMeta->slotMap()[slot];
653 if(proxyMode() != eMeta->receiverMode(slotId)) {
654 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed. Wrong ProxyMode!", eMeta->methodName(slotId).constData());
658 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
659 if(!invokeSlot(receiver, slotId, params, returnValue)) {
660 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
665 if(returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
666 int receiverId = eMeta->receiveMap()[slotId];
667 QVariantList returnParams;
668 returnParams << className
670 << eMeta->methodName(receiverId);
671 //QByteArray(receiver->metaObject()->method(receiverId).signature());
672 if(eMeta->argTypes(receiverId).count() > 1)
673 returnParams << params;
674 returnParams << returnValue;
675 sender->dispatchSignal(Sync, returnParams);
678 // send emit update signal
679 invokeSlot(receiver, eMeta->updatedRemotelyId());
682 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
683 if(params.count() != 2) {
684 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
689 QByteArray className(params[0].toByteArray());
690 QString objectName(params[1].toString());
692 if(!_syncSlave.contains(className)) {
693 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
698 if(!_syncSlave[className].contains(objectName)) {
699 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
700 << className << objectName;
704 SyncableObject *obj = _syncSlave[className][objectName];
706 QVariantList params_;
711 sender->dispatchSignal(InitData, params_);
714 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
716 if(params.count() != 3) {
717 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
722 QByteArray className(params[0].toByteArray());
723 QString objectName(params[1].toString());
724 QVariantMap propertyMap(params[2].toMap());
726 if(!_syncSlave.contains(className)) {
727 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
732 if(!_syncSlave[className].contains(objectName)) {
733 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
734 << className << objectName;
738 SyncableObject *obj = _syncSlave[className][objectName];
739 setInitData(obj, propertyMap);
742 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
743 void SignalProxy::handleSignal(const QVariantList &data) {
744 QVariantList params = data;
745 QByteArray funcName = params.takeFirst().toByteArray();
749 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
750 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
751 receiver = (*slot).first;
752 methodId = (*slot).second;
753 if(!invokeSlot(receiver, methodId, params)) {
754 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
755 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
761 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
762 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
763 const QList<int> args = eMeta->argTypes(methodId);
764 const int numArgs = params.count() < args.count()
768 if(eMeta->minArgCount(methodId) > params.count()) {
769 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
773 void *_a[] = {0, // return type...
774 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
777 // check for argument compatibility and build params array
778 for(int i = 0; i < numArgs; i++) {
779 if(!params[i].isValid()) {
780 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());
781 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
784 if(args[i] != QMetaType::type(params[i].typeName())) {
785 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
788 _a[i+1] = const_cast<void *>(params[i].constData());
791 if(returnValue.type() != QVariant::Invalid)
792 _a[0] = const_cast<void *>(returnValue.constData());
794 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
795 ? Qt::DirectConnection
796 : Qt::QueuedConnection;
798 if(type == Qt::DirectConnection) {
799 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
801 qWarning() << "Queued Connections are not implemented yet";
802 // note to self: qmetaobject.cpp:990 ff
808 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
810 return invokeSlot(receiver, methodId, params, ret);
813 void SignalProxy::dataAvailable() {
814 // yet again. it's a private slot. no need for checks.
815 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
816 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
817 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
819 while(peer->readData(var))
820 receivePackedFunc(peer, var);
823 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
824 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
825 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
826 qWarning("SignalProxy: Can't call write on a closed device");
831 QDataStream out(&block, QIODevice::WriteOnly);
832 out.setVersion(QDataStream::Qt_4_2);
837 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
839 itemStream.setVersion(QDataStream::Qt_4_2);
842 rawItem = qCompress(rawItem);
849 out.device()->seek(0);
850 out << (quint32)(block.size() - sizeof(quint32));
855 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
860 in.setVersion(QDataStream::Qt_4_2);
863 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
867 if(blockSize > 1 << 22) {
868 disconnectDevice(dev, tr("Peer tried to send package larger than max package size!"));
873 disconnectDevice(dev, tr("Peer tried to send 0 byte package!"));
877 if(dev->bytesAvailable() < blockSize)
886 int nbytes = rawItem.size();
888 const char *data = rawItem.constData();
889 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
890 disconnectDevice(dev, tr("Peer sent corrupted compressed data!"));
895 rawItem = qUncompress(rawItem);
897 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
898 itemStream.setVersion(QDataStream::Qt_4_2);
904 if(!item.isValid()) {
905 disconnectDevice(dev, tr("Peer sent corrupt data: unable to load QVariant!"));
912 void SignalProxy::requestInit(SyncableObject *obj) {
913 if(proxyMode() == Server || obj->isInitialized())
917 params << obj->syncMetaObject()->className()
918 << obj->objectName();
919 dispatchSignal(InitRequest, params);
922 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
923 return obj->toVariantMap();
926 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
927 if(obj->isInitialized())
929 obj->fromVariantMap(properties);
930 obj->setInitialized();
931 emit objectInitialized(obj);
932 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
935 void SignalProxy::sendHeartBeat() {
936 QVariantList heartBeatParams;
937 heartBeatParams << QTime::currentTime();
938 PeerHash::iterator peer = _peers.begin();
939 while(peer != _peers.end()) {
940 if((*peer)->type() == AbstractPeer::IODevicePeer) {
941 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
942 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
943 if(ioPeer->sentHeartBeats > 0) {
944 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
946 if(ioPeer->sentHeartBeats > 1) {
947 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
948 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
951 ioPeer->sentHeartBeats++;
958 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
959 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
962 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
963 if(peer->type() != AbstractPeer::IODevicePeer) {
964 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
968 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
969 ioPeer->sentHeartBeats = 0;
971 if(params.isEmpty()) {
972 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
976 QTime sendTime = params[0].value<QTime>();
977 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
980 void SignalProxy::customEvent(QEvent *event) {
981 switch(event->type()) {
984 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
985 receivePeerSignal(e->sender, e->requestType, e->params);
991 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1000 void SignalProxy::sync_call__(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap) {
1001 // qDebug() << obj << modeType << "(" << _proxyMode << ")" << funcname;
1002 if(modeType != _proxyMode)
1005 ExtendedMetaObject *eMeta = extendedMetaObject(obj);
1007 QVariantList params;
1008 params << eMeta->metaObject()->className()
1009 << obj->objectName()
1010 << QByteArray(funcname);
1012 const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
1014 for(int i = 0; i < argTypes.size(); i++) {
1015 if(argTypes[i] == 0) {
1016 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
1017 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1020 params << QVariant(argTypes[i], va_arg(ap, void *));
1023 dispatchSignal(Sync, params);
1028 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1029 if(!reason.isEmpty())
1030 qWarning() << qPrintable(reason);
1031 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1033 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1037 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1039 if(proxyMode() == Client) {
1040 emit lagUpdated(lag);
1044 void SignalProxy::dumpProxyStats() {
1046 if(proxyMode() == Server)
1052 foreach(ObjectId oid, _syncSlave.values())
1053 slaveCount += oid.count();
1056 qDebug() << " Proxy Mode:" << mode;
1057 qDebug() << " attached Slots:" << _attachedSlots.count();
1058 qDebug() << " number of synced Slaves:" << slaveCount;
1059 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1062 void SignalProxy::updateSecureState() {
1063 bool wasSecure = _secure;
1065 _secure = !_peers.isEmpty();
1066 PeerHash::const_iterator peerIter;
1067 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1068 _secure &= (*peerIter)->isSecure();
1071 if(wasSecure != _secure)
1072 emit secureStateChanged(_secure);
1076 // ==================================================
1077 // ExtendedMetaObject
1078 // ==================================================
1079 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
1081 _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
1083 for(int i = 0; i < _meta->methodCount(); i++) {
1084 if(_meta->method(i).methodType() != QMetaMethod::Slot)
1087 if(QByteArray(_meta->method(i).signature()).contains('*'))
1088 continue; // skip methods with ptr params
1090 QByteArray method = methodName(_meta->method(i));
1091 if(method.startsWith("init"))
1092 continue; // skip initializers
1094 if(_methodIds.contains(method)) {
1095 /* funny... moc creates for methods containing default parameters multiple metaMethod with separate methodIds.
1096 we don't care... we just need the full fledged version
1098 const QMetaMethod ¤t = _meta->method(_methodIds[method]);
1099 const QMetaMethod &candidate = _meta->method(i);
1100 if(current.parameterTypes().count() > candidate.parameterTypes().count()) {
1101 int minCount = candidate.parameterTypes().count();
1102 QList<QByteArray> commonParams = current.parameterTypes().mid(0, minCount);
1103 if(commonParams == candidate.parameterTypes())
1104 continue; // we already got the full featured version
1106 int minCount = current.parameterTypes().count();
1107 QList<QByteArray> commonParams = candidate.parameterTypes().mid(0, minCount);
1108 if(commonParams == current.parameterTypes()) {
1109 _methodIds[method] = i; // use the new one
1113 if(checkConflicts) {
1114 qWarning() << "class" << meta->className() << "contains overloaded methods which is currently not supported!";
1115 qWarning() << " - " << _meta->method(i).signature() << "conflicts with" << _meta->method(_methodIds[method]).signature();
1119 _methodIds[method] = i;
1123 const SignalProxy::ExtendedMetaObject::MethodDescriptor &SignalProxy::ExtendedMetaObject::methodDescriptor(int methodId) {
1124 if(!_methods.contains(methodId)) {
1125 _methods[methodId] = MethodDescriptor(_meta->method(methodId));
1127 return _methods[methodId];
1130 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap() {
1131 if(_receiveMap.isEmpty()) {
1132 QHash<int, int> receiveMap;
1134 QMetaMethod requestSlot;
1135 QByteArray returnTypeName;
1136 QByteArray signature;
1137 QByteArray methodName;
1141 const int methodCount = _meta->methodCount();
1142 for(int i = 0; i < methodCount; i++) {
1143 requestSlot = _meta->method(i);
1144 if(requestSlot.methodType() != QMetaMethod::Slot)
1147 returnTypeName = requestSlot.typeName();
1148 if(QMetaType::Void == (QMetaType::Type)returnType(i))
1151 signature = QByteArray(requestSlot.signature());
1152 if(!signature.startsWith("request"))
1155 paramsPos = signature.indexOf('(');
1159 methodName = signature.left(paramsPos);
1160 params = signature.mid(paramsPos);
1162 methodName = methodName.replace("request", "receive");
1163 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1165 signature = QMetaObject::normalizedSignature(methodName + params);
1166 receiverId = _meta->indexOfSlot(signature);
1168 if(receiverId == -1) {
1169 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1170 receiverId = _meta->indexOfSlot(signature);
1173 if(receiverId != -1) {
1174 receiveMap[i] = receiverId;
1177 _receiveMap = receiveMap;
1182 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method) {
1183 QByteArray sig(method.signature());
1184 return sig.left(sig.indexOf("("));
1187 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method) {
1188 QString methodname = QString(method.signature()).section("(", 0, 0);
1190 // determine where we have to chop:
1192 if(method.methodType() == QMetaMethod::Slot) {
1193 // we take evertyhing from the first uppercase char if it's slot
1194 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1195 if(upperCharPos == -1)
1197 methodname = methodname.mid(upperCharPos);
1199 // and if it's a signal we discard everything from the last uppercase char
1200 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1201 if(upperCharPos == -1)
1203 methodname = methodname.left(upperCharPos);
1206 methodname[0] = methodname[0].toUpper();
1211 SignalProxy::ExtendedMetaObject::MethodDescriptor::MethodDescriptor(const QMetaMethod &method)
1212 : _methodName(SignalProxy::ExtendedMetaObject::methodName(method)),
1213 _returnType(QMetaType::type(method.typeName()))
1215 // determine argTypes
1216 QList<QByteArray> paramTypes = method.parameterTypes();
1217 QList<int> argTypes;
1218 for(int i = 0; i < paramTypes.count(); i++) {
1219 argTypes.append(QMetaType::type(paramTypes[i]));
1221 _argTypes = argTypes;
1223 // determine minArgCount
1224 QString signature(method.signature());
1225 _minArgCount = method.parameterTypes().count() - signature.count("=");
1227 _receiverMode = (_methodName.startsWith("request"))
1228 ? SignalProxy::Server
1229 : SignalProxy::Client;