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() {
237 void SignalProxy::setProxyMode(ProxyMode mode) {
238 PeerHash::iterator peer = _peers.begin();
239 while(peer != _peers.end()) {
240 if((*peer)->type() != AbstractPeer::IODevicePeer) {
241 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
242 if(ioPeer->isOpen()) {
243 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
247 if((*peer)->type() != AbstractPeer::SignalProxyPeer) {
248 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
261 void SignalProxy::init() {
262 _signalRelay = new SignalRelay(this);
263 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
264 _heartBeatTimer.start(30 * 1000);
269 void SignalProxy::initServer() {
272 void SignalProxy::initClient() {
273 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
276 bool SignalProxy::addPeer(QIODevice* iodev) {
280 if(_peers.contains(iodev))
283 if(proxyMode() == Client && !_peers.isEmpty()) {
284 qWarning("SignalProxy: only one peer allowed in client mode!");
288 if(!iodev->isOpen()) {
289 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
293 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
294 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
297 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
299 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
304 iodev->setParent(this);
306 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
308 if(_peers.count() == 1)
315 bool SignalProxy::addPeer(SignalProxy* proxy) {
319 if(proxyMode() == proxy->proxyMode()) {
320 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
324 if(_peers.contains(proxy)) {
328 if(proxyMode() == Client && !_peers.isEmpty()) {
329 qWarning("SignalProxy: only one peer allowed in client mode!");
333 _peers[proxy] = new SignalProxyPeer(this, proxy);
334 proxy->addPeer(this);
336 if(_peers.count() == 1)
343 void SignalProxy::removeAllPeers() {
344 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
345 // wee need to copy that list since we modify it in the loop
346 QList<QObject *> peers = _peers.keys();
347 foreach(QObject *peer, peers) {
352 void SignalProxy::removePeer(QObject* dev) {
353 if(_peers.isEmpty()) {
354 qWarning() << "SignalProxy::removePeer(): No peers in use!";
359 if(!_peers.contains(dev)) {
360 qWarning() << "SignalProxy: unknown Peer" << dev;
364 AbstractPeer *peer = _peers[dev];
367 disconnect(dev, 0, this, 0);
368 if(peer->type() == AbstractPeer::IODevicePeer)
369 emit peerRemoved(static_cast<QIODevice *>(dev));
371 if(peer->type() == AbstractPeer::SignalProxyPeer) {
372 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
373 if(proxy->_peers.contains(this))
374 proxy->removePeer(this);
377 if(dev->parent() == this)
388 void SignalProxy::removePeerBySender() {
389 removePeer(sender());
392 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
393 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
394 const QMetaObject *meta = syncObject->syncMetaObject();
395 const QByteArray className(meta->className());
396 objectRenamed(className, newname, oldname);
398 if(proxyMode() == Client)
402 params << "__objectRenamed__" << className << newname << oldname;
403 dispatchSignal(RpcCall, params);
406 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
407 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
408 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
413 const QMetaObject *SignalProxy::metaObject(const QObject *obj) {
414 if(const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
415 return syncObject->syncMetaObject();
417 return obj->metaObject();
420 SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QMetaObject *meta) const {
421 if(_extendedMetaObjects.contains(meta))
422 return _extendedMetaObjects[meta];
427 SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta) {
428 if(!_extendedMetaObjects.contains(meta)) {
429 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta);
431 return _extendedMetaObjects[meta];
434 bool SignalProxy::attachSignal(QObject *sender, const char* signal, const QByteArray& sigName) {
435 const QMetaObject* meta = sender->metaObject();
436 QByteArray sig(meta->normalizedSignature(signal).mid(1));
437 int methodId = meta->indexOfMethod(sig.constData());
438 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
439 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
443 createExtendedMetaObject(meta);
444 _signalRelay->attachSignal(sender, methodId, sigName);
446 disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
447 connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
451 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
452 const QMetaObject* meta = recv->metaObject();
453 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
454 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
455 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
459 createExtendedMetaObject(meta);
461 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
462 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
464 disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
465 connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
469 void SignalProxy::synchronize(SyncableObject *obj) {
470 createExtendedMetaObject(obj);
472 // attaching as slave to receive sync Calls
473 QByteArray className(obj->syncMetaObject()->className());
474 _syncSlave[className][obj->objectName()] = obj;
475 disconnect(obj, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
476 connect(obj, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
478 if(proxyMode() == Server) {
479 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
480 obj->setInitialized();
481 emit objectInitialized(obj);
483 if(obj->isInitialized())
484 emit objectInitialized(obj);
489 obj->synchronize(this);
492 void SignalProxy::detachObject(QObject *obj) {
498 void SignalProxy::detachSignals(QObject *sender) {
499 _signalRelay->detachSignal(sender);
502 void SignalProxy::detachSlots(QObject* receiver) {
503 SlotHash::iterator slotIter = _attachedSlots.begin();
504 while(slotIter != _attachedSlots.end()) {
505 if(slotIter.value().first == receiver) {
506 slotIter = _attachedSlots.erase(slotIter);
512 void SignalProxy::stopSync(QObject *obj) {
513 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
514 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
515 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
516 while(classIter != _syncSlave.end()) {
517 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
518 classIter->remove(obj->objectName());
525 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
526 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
527 PeerHash::iterator peer = _peers.begin();
528 while(peer != _peers.end()) {
529 switch((*peer)->type()) {
530 case AbstractPeer::IODevicePeer:
532 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
534 ioPeer->dispatchPackedFunc(packedFunc);
536 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
539 case AbstractPeer::SignalProxyPeer:
540 (*peer)->dispatchSignal(requestType, params);
543 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
549 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
550 QVariantList params(packedFunc.toList());
552 if(params.isEmpty()) {
553 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
557 RequestType requestType = (RequestType)params.takeFirst().value<int>();
558 receivePeerSignal(sender, requestType, params);
561 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
562 switch(requestType) {
563 // list all RequestTypes that shouldnot trigger a heartbeat counter reset here
567 if(sender->type() == AbstractPeer::IODevicePeer) {
568 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(sender);
569 ioPeer->sentHeartBeats = 0;
573 switch(requestType) {
576 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
578 handleSignal(params);
579 //handleSignal(params.takeFirst().toByteArray(), params);
583 handleSync(sender, params);
587 handleInitRequest(sender, params);
591 handleInitData(sender, params);
595 receiveHeartBeat(sender, params);
599 receiveHeartBeatReply(sender, params);
603 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
607 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
608 if(!_peers.contains(sender)) {
609 // 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.
610 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
613 receivePeerSignal(_peers[sender], requestType, params);
616 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
617 if(params.count() < 3) {
618 qWarning() << "received invalid Sync call" << params;
622 QByteArray className = params.takeFirst().toByteArray();
623 QString objectName = params.takeFirst().toString();
624 QByteArray signal = params.takeFirst().toByteArray();
626 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
627 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
632 SyncableObject *receiver = _syncSlave[className][objectName];
633 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
634 if(!eMeta->syncMap().contains(signal)) {
635 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
640 int slotId = eMeta->syncMap()[signal];
642 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
643 if(!invokeSlot(receiver, slotId, params, returnValue)) {
644 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
648 if(returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
649 int receiverId = eMeta->receiveMap()[slotId];
650 QVariantList returnParams;
651 returnParams << className
653 << QByteArray(receiver->metaObject()->method(receiverId).signature());
654 if(eMeta->argTypes(receiverId).count() > 1)
655 returnParams << params;
656 returnParams << returnValue;
657 sender->dispatchSignal(Sync, returnParams);
660 // send emit update signal
661 invokeSlot(receiver, eMeta->updatedRemotelyId());
664 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
665 if(params.count() != 2) {
666 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
671 QByteArray className(params[0].toByteArray());
672 QString objectName(params[1].toString());
674 if(!_syncSlave.contains(className)) {
675 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
680 if(!_syncSlave[className].contains(objectName)) {
681 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
682 << className << objectName;
686 SyncableObject *obj = _syncSlave[className][objectName];
688 QVariantList params_;
693 sender->dispatchSignal(InitData, params_);
696 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
698 if(params.count() != 3) {
699 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
704 QByteArray className(params[0].toByteArray());
705 QString objectName(params[1].toString());
706 QVariantMap propertyMap(params[2].toMap());
708 if(!_syncSlave.contains(className)) {
709 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
714 if(!_syncSlave[className].contains(objectName)) {
715 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
716 << className << objectName;
720 SyncableObject *obj = _syncSlave[className][objectName];
721 setInitData(obj, propertyMap);
724 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
725 void SignalProxy::handleSignal(const QVariantList &data) {
726 QVariantList params = data;
727 QByteArray funcName = params.takeFirst().toByteArray();
731 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
732 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
733 receiver = (*slot).first;
734 methodId = (*slot).second;
735 if(!invokeSlot(receiver, methodId, params)) {
736 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
737 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
743 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
744 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
745 const QList<int> args = eMeta->argTypes(methodId);
746 const int numArgs = params.count() < args.count()
750 if(eMeta->minArgCount(methodId) > params.count()) {
751 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
755 void *_a[] = {0, // return type...
756 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
759 // check for argument compatibility and build params array
760 for(int i = 0; i < numArgs; i++) {
761 if(!params[i].isValid()) {
762 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());
763 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
766 if(args[i] != QMetaType::type(params[i].typeName())) {
767 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
770 _a[i+1] = const_cast<void *>(params[i].constData());
773 if(returnValue.type() != QVariant::Invalid)
774 _a[0] = const_cast<void *>(returnValue.constData());
776 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
777 ? Qt::DirectConnection
778 : Qt::QueuedConnection;
780 if(type == Qt::DirectConnection) {
781 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
783 qWarning() << "Queued Connections are not implemented yet";
784 // note to self: qmetaobject.cpp:990 ff
790 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
792 return invokeSlot(receiver, methodId, params, ret);
795 void SignalProxy::dataAvailable() {
796 // yet again. it's a private slot. no need for checks.
797 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
798 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
799 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
801 while(peer->readData(var))
802 receivePackedFunc(peer, var);
805 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
806 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
807 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
808 qWarning("SignalProxy: Can't call write on a closed device");
813 QDataStream out(&block, QIODevice::WriteOnly);
814 out.setVersion(QDataStream::Qt_4_2);
819 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
821 itemStream.setVersion(QDataStream::Qt_4_2);
824 rawItem = qCompress(rawItem);
831 out.device()->seek(0);
832 out << (quint32)(block.size() - sizeof(quint32));
837 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
842 in.setVersion(QDataStream::Qt_4_2);
845 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
849 if(blockSize > 1 << 22) {
850 disconnectDevice(dev, tr("Peer tried to send package larger than max package size!"));
855 disconnectDevice(dev, tr("Peer tried to send 0 byte package!"));
859 if(dev->bytesAvailable() < blockSize)
868 int nbytes = rawItem.size();
870 const char *data = rawItem.constData();
871 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
872 disconnectDevice(dev, tr("Peer sent corrupted compressed data!"));
877 rawItem = qUncompress(rawItem);
879 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
880 itemStream.setVersion(QDataStream::Qt_4_2);
886 if(!item.isValid()) {
887 disconnectDevice(dev, tr("Peer sent corrupt data: unable to load QVariant!"));
894 void SignalProxy::requestInit(SyncableObject *obj) {
895 if(proxyMode() == Server || obj->isInitialized())
899 params << obj->syncMetaObject()->className()
900 << obj->objectName();
901 dispatchSignal(InitRequest, params);
904 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
905 return obj->toVariantMap();
908 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
909 if(obj->isInitialized())
911 obj->fromVariantMap(properties);
912 obj->setInitialized();
913 emit objectInitialized(obj);
914 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
917 void SignalProxy::sendHeartBeat() {
918 QVariantList heartBeatParams;
919 heartBeatParams << QTime::currentTime();
920 PeerHash::iterator peer = _peers.begin();
921 while(peer != _peers.end()) {
922 if((*peer)->type() == AbstractPeer::IODevicePeer) {
923 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
924 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
925 if(ioPeer->sentHeartBeats > 0) {
926 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
928 if(ioPeer->sentHeartBeats > 1) {
929 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
930 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
933 ioPeer->sentHeartBeats++;
940 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
941 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
944 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
945 if(peer->type() != AbstractPeer::IODevicePeer) {
946 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
950 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
951 ioPeer->sentHeartBeats = 0;
953 if(params.isEmpty()) {
954 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
958 QTime sendTime = params[0].value<QTime>();
959 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
962 void SignalProxy::customEvent(QEvent *event) {
963 switch(event->type()) {
966 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
967 receivePeerSignal(e->sender, e->requestType, e->params);
973 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
982 void SignalProxy::syncCall(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap) {
983 if(modeType != _proxyMode)
986 ExtendedMetaObject *eMeta = extendedMetaObject(obj);
990 params << eMeta->metaObject()->className()
992 << QByteArray(funcname);
995 const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
997 for(int i = 0; i < argTypes.size(); i++) {
998 if(argTypes[i] == 0) {
999 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
1000 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1003 params << QVariant(argTypes[i], va_arg(ap, void *));
1007 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1008 if(!reason.isEmpty())
1009 qWarning() << qPrintable(reason);
1010 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1012 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1016 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1018 if(proxyMode() == Client) {
1019 emit lagUpdated(lag);
1023 void SignalProxy::dumpProxyStats() {
1025 if(proxyMode() == Server)
1031 foreach(ObjectId oid, _syncSlave.values())
1032 slaveCount += oid.count();
1035 qDebug() << " Proxy Mode:" << mode;
1036 qDebug() << " attached Slots:" << _attachedSlots.count();
1037 qDebug() << " number of synced Slaves:" << slaveCount;
1038 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1041 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1042 const QMetaObject *meta = object->metaObject();
1043 ExtendedMetaObject *eMeta = extendedMetaObject(object);
1044 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1046 QHash<QByteArray, int> syncMap_ = eMeta->syncMap();
1047 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1048 while(iter != syncMap_.constEnd()) {
1049 qDebug() << qPrintable(QString("%1 --> %2 %3").arg(QString(iter.key()), 40).arg(iter.value()).arg(QString(meta->method(iter.value()).signature())));
1054 void SignalProxy::updateSecureState() {
1055 bool wasSecure = _secure;
1057 _secure = !_peers.isEmpty();
1058 PeerHash::const_iterator peerIter;
1059 for(peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1060 _secure &= (*peerIter)->isSecure();
1063 if(wasSecure != _secure)
1064 emit secureStateChanged(_secure);
1068 // ==================================================
1069 // ExtendedMetaObject
1070 // ==================================================
1071 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta)
1073 _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
1077 const SignalProxy::ExtendedMetaObject::MethodDescriptor &SignalProxy::ExtendedMetaObject::methodDescriptor(int methodId) {
1078 if(!_methods.contains(methodId)) {
1079 _methods[methodId] = MethodDescriptor(_meta->method(methodId));
1081 return _methods[methodId];
1084 int SignalProxy::ExtendedMetaObject::methodId(const QByteArray &methodName) {
1085 if(_methodIds.contains(methodName)) {
1086 return _methodIds[methodName];
1088 for(int i = _meta->methodOffset(); i < _meta->methodCount(); i++) {
1089 if(ExtendedMetaObject::methodName(_meta->method(i)) == methodName) {
1090 _methodIds[methodName] = i;
1099 const QHash<QByteArray, int> &SignalProxy::ExtendedMetaObject::syncMap() {
1100 if(_syncMap.isEmpty()) {
1101 QHash<QByteArray, int> syncMap;
1103 QList<int> slotIndexes;
1104 for(int i = 0; i < _meta->methodCount(); i++) {
1105 if(_meta->method(i).methodType() == QMetaMethod::Slot)
1109 // we're faking sync pairs for sync replies
1110 // --> we deliver to every slot starting with "receive"
1111 QByteArray slotSignature;
1112 QList<int>::iterator slotIter = slotIndexes.begin();
1113 while(slotIter != slotIndexes.end()) {
1114 slotSignature = QByteArray(_meta->method(*slotIter).signature());
1115 if(slotSignature.startsWith("receive")) {
1116 syncMap[slotSignature] = *slotIter;
1117 slotIter = slotIndexes.erase(slotIter);
1123 // find the proper sig -> slot matches
1124 QMetaMethod signal, slot;
1126 for(int signalIdx = 0; signalIdx < _meta->methodCount(); signalIdx++) {
1127 signal = _meta->method(signalIdx);
1128 if(signal.methodType() != QMetaMethod::Signal)
1132 foreach(int slotIdx, slotIndexes) {
1133 slot = _meta->method(slotIdx);
1134 if(methodsMatch(signal, slot)) {
1139 if(matchIdx != -1) {
1140 slotIndexes.removeAll(matchIdx);
1141 syncMap[QByteArray(signal.signature())] = matchIdx;
1149 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap() {
1150 if(_receiveMap.isEmpty()) {
1151 QHash<int, int> receiveMap;
1153 QMetaMethod requestSlot;
1154 QByteArray returnTypeName;
1155 QByteArray signature;
1156 QByteArray methodName;
1160 const int methodCount = _meta->methodCount();
1161 for(int i = 0; i < methodCount; i++) {
1162 requestSlot = _meta->method(i);
1163 if(requestSlot.methodType() != QMetaMethod::Slot)
1166 returnTypeName = requestSlot.typeName();
1167 if(QMetaType::Void == (QMetaType::Type)returnType(i))
1170 signature = QByteArray(requestSlot.signature());
1171 if(!signature.startsWith("request"))
1174 paramsPos = signature.indexOf('(');
1178 methodName = signature.left(paramsPos);
1179 params = signature.mid(paramsPos);
1181 methodName = methodName.replace("request", "receive");
1182 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1184 signature = QMetaObject::normalizedSignature(methodName + params);
1185 receiverId = _meta->indexOfSlot(signature);
1187 if(receiverId == -1) {
1188 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1189 receiverId = _meta->indexOfSlot(signature);
1192 if(receiverId != -1)
1193 receiveMap[i] = receiverId;
1195 _receiveMap = receiveMap;
1200 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method) {
1201 QByteArray sig(method.signature());
1202 return sig.left(sig.indexOf("("));
1205 bool SignalProxy::ExtendedMetaObject::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) {
1206 // if we don't even have the same basename it's a sure NO
1207 QString baseName = methodBaseName(signal);
1208 if(baseName != methodBaseName(slot))
1211 // are the signatures compatible?
1212 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1215 // we take an educated guess if the signals and slots match
1216 QString signalsuffix = methodName(signal);
1217 QString slotprefix = methodName(slot);
1218 if(!baseName.isEmpty()) {
1219 signalsuffix = signalsuffix.mid(baseName.count()).toLower();
1220 slotprefix = slotprefix.left(slotprefix.count() - baseName.count()).toLower();
1223 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1224 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1228 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method) {
1229 QString methodname = QString(method.signature()).section("(", 0, 0);
1231 // determine where we have to chop:
1233 if(method.methodType() == QMetaMethod::Slot) {
1234 // we take evertyhing from the first uppercase char if it's slot
1235 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1236 if(upperCharPos == -1)
1238 methodname = methodname.mid(upperCharPos);
1240 // and if it's a signal we discard everything from the last uppercase char
1241 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1242 if(upperCharPos == -1)
1244 methodname = methodname.left(upperCharPos);
1247 methodname[0] = methodname[0].toUpper();
1252 SignalProxy::ExtendedMetaObject::MethodDescriptor::MethodDescriptor(const QMetaMethod &method)
1253 : _methodName(SignalProxy::ExtendedMetaObject::methodName(method)),
1254 _returnType(QMetaType::type(method.typeName()))
1256 // determine argTypes
1257 QList<QByteArray> paramTypes = method.parameterTypes();
1258 QList<int> argTypes;
1259 for(int i = 0; i < paramTypes.count(); i++) {
1260 argTypes.append(QMetaType::type(paramTypes[i]));
1262 _argTypes = argTypes;
1264 // determine minArgCount
1265 QString signature(method.signature());
1266 _minArgCount = method.parameterTypes().count() - signature.count("=");