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);
282 void SignalProxy::initServer() {
285 void SignalProxy::initClient() {
286 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
289 bool SignalProxy::addPeer(QIODevice* iodev) {
293 if(_peers.contains(iodev))
296 if(proxyMode() == Client && !_peers.isEmpty()) {
297 qWarning("SignalProxy: only one peer allowed in client mode!");
301 if(!iodev->isOpen()) {
302 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
306 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
307 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
310 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
312 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
317 iodev->setParent(this);
319 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
321 if(_peers.count() == 1)
328 void SignalProxy::setHeartBeatInterval(int secs) {
329 if(secs != _heartBeatInterval) {
330 _heartBeatInterval = secs;
331 _heartBeatTimer.setInterval(secs * 1000);
335 void SignalProxy::setMaxHeartBeatCount(int max) {
337 _heartBeatTimer.stop();
339 _maxHeartBeatCount = max;
340 if(!_heartBeatTimer.isActive())
341 _heartBeatTimer.start();
345 bool SignalProxy::addPeer(SignalProxy* proxy) {
349 if(proxyMode() == proxy->proxyMode()) {
350 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
354 if(_peers.contains(proxy)) {
358 if(proxyMode() == Client && !_peers.isEmpty()) {
359 qWarning("SignalProxy: only one peer allowed in client mode!");
363 _peers[proxy] = new SignalProxyPeer(this, proxy);
364 proxy->addPeer(this);
366 if(_peers.count() == 1)
373 void SignalProxy::removeAllPeers() {
374 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
375 // wee need to copy that list since we modify it in the loop
376 QList<QObject *> peers = _peers.keys();
377 foreach(QObject *peer, peers) {
382 void SignalProxy::removePeer(QObject* dev) {
383 if(_peers.isEmpty()) {
384 qWarning() << "SignalProxy::removePeer(): No peers in use!";
389 if(!_peers.contains(dev)) {
390 qWarning() << "SignalProxy: unknown Peer" << dev;
394 AbstractPeer *peer = _peers[dev];
397 disconnect(dev, 0, this, 0);
398 if(peer->type() == AbstractPeer::IODevicePeer)
399 emit peerRemoved(static_cast<QIODevice *>(dev));
401 if(peer->type() == AbstractPeer::SignalProxyPeer) {
402 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
403 if(proxy->_peers.contains(this))
404 proxy->removePeer(this);
407 if(dev->parent() == this)
418 void SignalProxy::removePeerBySender() {
419 removePeer(sender());
422 void SignalProxy::renameObject(const SyncableObject *obj, const QString &newname, const QString &oldname) {
423 if(proxyMode() == Client)
426 const QMetaObject *meta = obj->syncMetaObject();
427 const QByteArray className(meta->className());
428 objectRenamed(className, newname, oldname);
431 params << "__objectRenamed__" << className << newname << oldname;
432 dispatchSignal(RpcCall, params);
435 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
436 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
437 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
442 const QMetaObject *SignalProxy::metaObject(const QObject *obj) {
443 if(const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
444 return syncObject->syncMetaObject();
446 return obj->metaObject();
449 SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QMetaObject *meta) const {
450 if(_extendedMetaObjects.contains(meta))
451 return _extendedMetaObjects[meta];
456 SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta, bool checkConflicts) {
457 if(!_extendedMetaObjects.contains(meta)) {
458 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta, checkConflicts);
460 return _extendedMetaObjects[meta];
463 bool SignalProxy::attachSignal(QObject *sender, const char* signal, const QByteArray& sigName) {
464 const QMetaObject* meta = sender->metaObject();
465 QByteArray sig(meta->normalizedSignature(signal).mid(1));
466 int methodId = meta->indexOfMethod(sig.constData());
467 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
468 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
472 createExtendedMetaObject(meta);
473 _signalRelay->attachSignal(sender, methodId, sigName);
475 disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
476 connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
480 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
481 const QMetaObject* meta = recv->metaObject();
482 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
483 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
484 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
488 createExtendedMetaObject(meta);
490 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
491 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
493 disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
494 connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
498 void SignalProxy::synchronize(SyncableObject *obj) {
499 createExtendedMetaObject(obj, true);
501 // attaching as slave to receive sync Calls
502 QByteArray className(obj->syncMetaObject()->className());
503 _syncSlave[className][obj->objectName()] = obj;
505 if(proxyMode() == Server) {
506 obj->setInitialized();
507 emit objectInitialized(obj);
509 if(obj->isInitialized())
510 emit objectInitialized(obj);
515 obj->synchronize(this);
518 void SignalProxy::detachObject(QObject *obj) {
523 void SignalProxy::detachSignals(QObject *sender) {
524 _signalRelay->detachSignal(sender);
527 void SignalProxy::detachSlots(QObject* receiver) {
528 SlotHash::iterator slotIter = _attachedSlots.begin();
529 while(slotIter != _attachedSlots.end()) {
530 if(slotIter.value().first == receiver) {
531 slotIter = _attachedSlots.erase(slotIter);
537 void SignalProxy::stopSynchronize(SyncableObject *obj) {
538 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
539 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
540 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
541 while(classIter != _syncSlave.end()) {
542 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
543 classIter->remove(obj->objectName());
548 obj->stopSynchronize(this);
551 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
552 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
553 PeerHash::iterator peer = _peers.begin();
554 while(peer != _peers.end()) {
555 switch((*peer)->type()) {
556 case AbstractPeer::IODevicePeer:
558 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
560 ioPeer->dispatchPackedFunc(packedFunc);
562 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
565 case AbstractPeer::SignalProxyPeer:
566 (*peer)->dispatchSignal(requestType, params);
569 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
575 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
576 QVariantList params(packedFunc.toList());
578 if(params.isEmpty()) {
579 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
583 RequestType requestType = (RequestType)params.takeFirst().value<int>();
584 receivePeerSignal(sender, requestType, params);
587 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
588 switch(requestType) {
589 // list all RequestTypes that shouldnot trigger a heartbeat counter reset here
593 if(sender->type() == AbstractPeer::IODevicePeer) {
594 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(sender);
595 ioPeer->sentHeartBeats = 0;
599 // qDebug() << "SignalProxy::receivePeerSignal)" << requestType << params;
600 switch(requestType) {
603 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
605 handleSignal(params);
606 //handleSignal(params.takeFirst().toByteArray(), params);
610 handleSync(sender, params);
614 handleInitRequest(sender, params);
618 handleInitData(sender, params);
622 receiveHeartBeat(sender, params);
626 receiveHeartBeatReply(sender, params);
630 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
634 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
635 if(!_peers.contains(sender)) {
636 // 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.
637 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
640 receivePeerSignal(_peers[sender], requestType, params);
643 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
644 if(params.count() < 3) {
645 qWarning() << "received invalid Sync call" << params;
649 QByteArray className = params.takeFirst().toByteArray();
650 QString objectName = params.takeFirst().toString();
651 QByteArray slot = params.takeFirst().toByteArray();
653 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
654 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
659 SyncableObject *receiver = _syncSlave[className][objectName];
660 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
661 if(!eMeta->slotMap().contains(slot)) {
662 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
667 int slotId = eMeta->slotMap()[slot];
668 if(proxyMode() != eMeta->receiverMode(slotId)) {
669 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed. Wrong ProxyMode!", eMeta->methodName(slotId).constData());
673 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
674 if(!invokeSlot(receiver, slotId, params, returnValue)) {
675 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
680 if(returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
681 int receiverId = eMeta->receiveMap()[slotId];
682 QVariantList returnParams;
683 returnParams << className
685 << eMeta->methodName(receiverId);
686 //QByteArray(receiver->metaObject()->method(receiverId).signature());
687 if(eMeta->argTypes(receiverId).count() > 1)
688 returnParams << params;
689 returnParams << returnValue;
690 sender->dispatchSignal(Sync, returnParams);
693 // send emit update signal
694 invokeSlot(receiver, eMeta->updatedRemotelyId());
697 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
698 if(params.count() != 2) {
699 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
704 QByteArray className(params[0].toByteArray());
705 QString objectName(params[1].toString());
707 if(!_syncSlave.contains(className)) {
708 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
713 if(!_syncSlave[className].contains(objectName)) {
714 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
715 << className << objectName;
719 SyncableObject *obj = _syncSlave[className][objectName];
721 QVariantList params_;
726 sender->dispatchSignal(InitData, params_);
729 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
731 if(params.count() != 3) {
732 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
737 QByteArray className(params[0].toByteArray());
738 QString objectName(params[1].toString());
739 QVariantMap propertyMap(params[2].toMap());
741 if(!_syncSlave.contains(className)) {
742 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
747 if(!_syncSlave[className].contains(objectName)) {
748 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
749 << className << objectName;
753 SyncableObject *obj = _syncSlave[className][objectName];
754 setInitData(obj, propertyMap);
757 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
758 void SignalProxy::handleSignal(const QVariantList &data) {
759 QVariantList params = data;
760 QByteArray funcName = params.takeFirst().toByteArray();
764 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
765 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
766 receiver = (*slot).first;
767 methodId = (*slot).second;
768 if(!invokeSlot(receiver, methodId, params)) {
769 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
770 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
776 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
777 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
778 const QList<int> args = eMeta->argTypes(methodId);
779 const int numArgs = params.count() < args.count()
783 if(eMeta->minArgCount(methodId) > params.count()) {
784 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
788 void *_a[] = {0, // return type...
789 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
792 // check for argument compatibility and build params array
793 for(int i = 0; i < numArgs; i++) {
794 if(!params[i].isValid()) {
795 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());
796 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
799 if(args[i] != QMetaType::type(params[i].typeName())) {
800 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
803 _a[i+1] = const_cast<void *>(params[i].constData());
806 if(returnValue.type() != QVariant::Invalid)
807 _a[0] = const_cast<void *>(returnValue.constData());
809 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
810 ? Qt::DirectConnection
811 : Qt::QueuedConnection;
813 if(type == Qt::DirectConnection) {
814 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
816 qWarning() << "Queued Connections are not implemented yet";
817 // note to self: qmetaobject.cpp:990 ff
823 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
825 return invokeSlot(receiver, methodId, params, ret);
828 void SignalProxy::dataAvailable() {
829 // yet again. it's a private slot. no need for checks.
830 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
831 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
832 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
834 while(peer->readData(var))
835 receivePackedFunc(peer, var);
838 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
839 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
840 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
841 qWarning("SignalProxy: Can't call write on a closed device");
846 QDataStream out(&block, QIODevice::WriteOnly);
847 out.setVersion(QDataStream::Qt_4_2);
852 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
854 itemStream.setVersion(QDataStream::Qt_4_2);
857 rawItem = qCompress(rawItem);
864 out.device()->seek(0);
865 out << (quint32)(block.size() - sizeof(quint32));
870 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
875 in.setVersion(QDataStream::Qt_4_2);
878 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
882 if(blockSize > 1 << 22) {
883 disconnectDevice(dev, tr("Peer tried to send package larger than max package size!"));
888 disconnectDevice(dev, tr("Peer tried to send 0 byte package!"));
892 if(dev->bytesAvailable() < blockSize)
901 int nbytes = rawItem.size();
903 const char *data = rawItem.constData();
904 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
905 disconnectDevice(dev, tr("Peer sent corrupted compressed data!"));
910 rawItem = qUncompress(rawItem);
912 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
913 itemStream.setVersion(QDataStream::Qt_4_2);
919 if(!item.isValid()) {
920 disconnectDevice(dev, tr("Peer sent corrupt data: unable to load QVariant!"));
927 void SignalProxy::requestInit(SyncableObject *obj) {
928 if(proxyMode() == Server || obj->isInitialized())
932 params << obj->syncMetaObject()->className()
933 << obj->objectName();
934 dispatchSignal(InitRequest, params);
937 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
938 return obj->toVariantMap();
941 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
942 if(obj->isInitialized())
944 obj->fromVariantMap(properties);
945 obj->setInitialized();
946 emit objectInitialized(obj);
947 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
950 void SignalProxy::sendHeartBeat() {
951 QVariantList heartBeatParams;
952 heartBeatParams << QTime::currentTime();
953 QList<IODevicePeer *> toClose;
955 PeerHash::iterator peer = _peers.begin();
956 while(peer != _peers.end()) {
957 if((*peer)->type() == AbstractPeer::IODevicePeer) {
958 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
959 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
960 if(ioPeer->sentHeartBeats > 0) {
961 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
963 if(ioPeer->sentHeartBeats >= maxHeartBeatCount())
964 toClose.append(ioPeer);
966 ioPeer->sentHeartBeats++;
971 foreach(IODevicePeer *ioPeer, toClose) {
972 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
973 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
978 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
979 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
982 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
983 if(peer->type() != AbstractPeer::IODevicePeer) {
984 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
988 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
989 ioPeer->sentHeartBeats = 0;
991 if(params.isEmpty()) {
992 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
996 QTime sendTime = params[0].value<QTime>();
997 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1000 void SignalProxy::customEvent(QEvent *event) {
1001 switch(event->type()) {
1004 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1005 receivePeerSignal(e->sender, e->requestType, e->params);
1011 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1012 removePeer(e->peer);
1020 void SignalProxy::sync_call__(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap) {
1021 // qDebug() << obj << modeType << "(" << _proxyMode << ")" << funcname;
1022 if(modeType != _proxyMode)
1025 ExtendedMetaObject *eMeta = extendedMetaObject(obj);
1027 QVariantList params;
1028 params << eMeta->metaObject()->className()
1029 << obj->objectName()
1030 << QByteArray(funcname);
1032 const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
1034 for(int i = 0; i < argTypes.size(); i++) {
1035 if(argTypes[i] == 0) {
1036 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
1037 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1040 params << QVariant(argTypes[i], va_arg(ap, void *));
1043 dispatchSignal(Sync, params);
1048 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1049 if(!reason.isEmpty())
1050 qWarning() << qPrintable(reason);
1051 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1053 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1057 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1059 if(proxyMode() == Client) {
1060 emit lagUpdated(lag);
1064 void SignalProxy::dumpProxyStats() {
1066 if(proxyMode() == Server)
1072 foreach(ObjectId oid, _syncSlave.values())
1073 slaveCount += oid.count();
1076 qDebug() << " Proxy Mode:" << mode;
1077 qDebug() << " attached Slots:" << _attachedSlots.count();
1078 qDebug() << " number of synced Slaves:" << slaveCount;
1079 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1082 void SignalProxy::updateSecureState() {
1083 bool wasSecure = _secure;
1085 _secure = !_peers.isEmpty();
1086 PeerHash::const_iterator peerIter;
1087 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1088 _secure &= (*peerIter)->isSecure();
1091 if(wasSecure != _secure)
1092 emit secureStateChanged(_secure);
1096 // ==================================================
1097 // ExtendedMetaObject
1098 // ==================================================
1099 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
1101 _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
1103 for(int i = 0; i < _meta->methodCount(); i++) {
1104 if(_meta->method(i).methodType() != QMetaMethod::Slot)
1107 if(QByteArray(_meta->method(i).signature()).contains('*'))
1108 continue; // skip methods with ptr params
1110 QByteArray method = methodName(_meta->method(i));
1111 if(method.startsWith("init"))
1112 continue; // skip initializers
1114 if(_methodIds.contains(method)) {
1115 /* funny... moc creates for methods containing default parameters multiple metaMethod with separate methodIds.
1116 we don't care... we just need the full fledged version
1118 const QMetaMethod ¤t = _meta->method(_methodIds[method]);
1119 const QMetaMethod &candidate = _meta->method(i);
1120 if(current.parameterTypes().count() > candidate.parameterTypes().count()) {
1121 int minCount = candidate.parameterTypes().count();
1122 QList<QByteArray> commonParams = current.parameterTypes().mid(0, minCount);
1123 if(commonParams == candidate.parameterTypes())
1124 continue; // we already got the full featured version
1126 int minCount = current.parameterTypes().count();
1127 QList<QByteArray> commonParams = candidate.parameterTypes().mid(0, minCount);
1128 if(commonParams == current.parameterTypes()) {
1129 _methodIds[method] = i; // use the new one
1133 if(checkConflicts) {
1134 qWarning() << "class" << meta->className() << "contains overloaded methods which is currently not supported!";
1135 qWarning() << " - " << _meta->method(i).signature() << "conflicts with" << _meta->method(_methodIds[method]).signature();
1139 _methodIds[method] = i;
1143 const SignalProxy::ExtendedMetaObject::MethodDescriptor &SignalProxy::ExtendedMetaObject::methodDescriptor(int methodId) {
1144 if(!_methods.contains(methodId)) {
1145 _methods[methodId] = MethodDescriptor(_meta->method(methodId));
1147 return _methods[methodId];
1150 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap() {
1151 if(_receiveMap.isEmpty()) {
1152 QHash<int, int> receiveMap;
1154 QMetaMethod requestSlot;
1155 QByteArray returnTypeName;
1156 QByteArray signature;
1157 QByteArray methodName;
1161 const int methodCount = _meta->methodCount();
1162 for(int i = 0; i < methodCount; i++) {
1163 requestSlot = _meta->method(i);
1164 if(requestSlot.methodType() != QMetaMethod::Slot)
1167 returnTypeName = requestSlot.typeName();
1168 if(QMetaType::Void == (QMetaType::Type)returnType(i))
1171 signature = QByteArray(requestSlot.signature());
1172 if(!signature.startsWith("request"))
1175 paramsPos = signature.indexOf('(');
1179 methodName = signature.left(paramsPos);
1180 params = signature.mid(paramsPos);
1182 methodName = methodName.replace("request", "receive");
1183 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1185 signature = QMetaObject::normalizedSignature(methodName + params);
1186 receiverId = _meta->indexOfSlot(signature);
1188 if(receiverId == -1) {
1189 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1190 receiverId = _meta->indexOfSlot(signature);
1193 if(receiverId != -1) {
1194 receiveMap[i] = receiverId;
1197 _receiveMap = receiveMap;
1202 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method) {
1203 QByteArray sig(method.signature());
1204 return sig.left(sig.indexOf("("));
1207 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method) {
1208 QString methodname = QString(method.signature()).section("(", 0, 0);
1210 // determine where we have to chop:
1212 if(method.methodType() == QMetaMethod::Slot) {
1213 // we take evertyhing from the first uppercase char if it's slot
1214 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1215 if(upperCharPos == -1)
1217 methodname = methodname.mid(upperCharPos);
1219 // and if it's a signal we discard everything from the last uppercase char
1220 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1221 if(upperCharPos == -1)
1223 methodname = methodname.left(upperCharPos);
1226 methodname[0] = methodname[0].toUpper();
1231 SignalProxy::ExtendedMetaObject::MethodDescriptor::MethodDescriptor(const QMetaMethod &method)
1232 : _methodName(SignalProxy::ExtendedMetaObject::methodName(method)),
1233 _returnType(QMetaType::type(method.typeName()))
1235 // determine argTypes
1236 QList<QByteArray> paramTypes = method.parameterTypes();
1237 QList<int> argTypes;
1238 for(int i = 0; i < paramTypes.count(); i++) {
1239 argTypes.append(QMetaType::type(paramTypes[i]));
1241 _argTypes = argTypes;
1243 // determine minArgCount
1244 QString signature(method.signature());
1245 _minArgCount = method.parameterTypes().count() - signature.count("=");
1247 _receiverMode = (_methodName.startsWith("request"))
1248 ? SignalProxy::Server
1249 : SignalProxy::Client;