1 /***************************************************************************
2 * Copyright (C) 2005-2012 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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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
52 PeerSignalEvent(SignalProxy *sender, SignalProxy::RequestType requestType, const QVariantList ¶ms) : QEvent(QEvent::Type(SignalProxy::PeerSignal)), sender(sender), requestType(requestType), params(params) {}
54 SignalProxy::RequestType requestType;
59 class RemovePeerEvent : public QEvent
62 RemovePeerEvent(QObject *peer) : QEvent(QEvent::Type(SignalProxy::RemovePeer)), peer(peer) {}
67 // ==================================================
69 // ==================================================
70 class SignalProxy::SignalRelay : public QObject
72 /* Q_OBJECT is not necessary or even allowed, because we implement
73 qt_metacall ourselves (and don't use any other features of the meta
77 SignalRelay(SignalProxy *parent) : QObject(parent), _proxy(parent) {}
78 inline SignalProxy *proxy() const { return _proxy; }
80 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
82 void attachSignal(QObject *sender, int signalId, const QByteArray &funcName);
83 void detachSignal(QObject *sender, int signalId = -1);
90 Signal(QObject *sender, int sigId, const QByteArray &signature) : sender(sender), signalId(sigId), signature(signature) {}
91 Signal() : sender(0), signalId(-1) {}
95 QHash<int, Signal> _slots;
99 void SignalProxy::SignalRelay::attachSignal(QObject *sender, int signalId, const QByteArray &funcName)
101 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
102 // all connected methodIds are offset by the standard methodCount of QObject
104 for (int i = 0;; i++) {
105 if (!_slots.contains(i)) {
112 if (!funcName.isEmpty()) {
113 fn = QMetaObject::normalizedSignature(funcName);
116 fn = SIGNAL(fakeMethodSignature());
117 fn = fn.replace("fakeMethodSignature()", sender->metaObject()->method(signalId).signature());
120 _slots[slotId] = Signal(sender, signalId, fn);
122 QMetaObject::connect(sender, signalId, this, QObject::staticMetaObject.methodCount() + slotId);
126 void SignalProxy::SignalRelay::detachSignal(QObject *sender, int signalId)
128 QHash<int, Signal>::iterator slotIter = _slots.begin();
129 while (slotIter != _slots.end()) {
130 if (slotIter->sender == sender && (signalId == -1 || slotIter->signalId == signalId)) {
131 slotIter = _slots.erase(slotIter);
142 int SignalProxy::SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
144 _id = QObject::qt_metacall(_c, _id, _a);
148 if (_c == QMetaObject::InvokeMetaMethod) {
149 if (_slots.contains(_id)) {
150 QObject *caller = sender();
152 SignalProxy::ExtendedMetaObject *eMeta = proxy()->extendedMetaObject(caller->metaObject());
155 const Signal &signal = _slots[_id];
158 params << signal.signature;
160 const QList<int> &argTypes = eMeta->argTypes(signal.signalId);
161 for (int i = 0; i < argTypes.size(); i++) {
162 if (argTypes[i] == 0) {
163 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());
164 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
167 params << QVariant(argTypes[i], _a[i+1]);
170 proxy()->dispatchSignal(SignalProxy::RpcCall, params);
172 _id -= _slots.count();
178 // ==================================================
180 // ==================================================
181 void SignalProxy::IODevicePeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms)
183 QVariantList packedFunc;
184 packedFunc << (qint16)requestType
186 dispatchPackedFunc(QVariant(packedFunc));
190 bool SignalProxy::IODevicePeer::isSecure() const
193 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(_device);
195 return sslSocket->isEncrypted() || sslSocket->localAddress() == QHostAddress::LocalHost || sslSocket->localAddress() == QHostAddress::LocalHostIPv6;
198 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
200 return socket->localAddress() == QHostAddress::LocalHost || socket->localAddress() == QHostAddress::LocalHostIPv6;
206 QString SignalProxy::IODevicePeer::address() const
208 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
210 return socket->peerAddress().toString();
216 void SignalProxy::SignalProxyPeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms)
218 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
219 ? Qt::DirectConnection
220 : Qt::QueuedConnection;
222 if (type == Qt::DirectConnection) {
223 receiver->receivePeerSignal(sender, requestType, params);
226 QCoreApplication::postEvent(receiver, new PeerSignalEvent(sender, requestType, params));
231 // ==================================================
233 // ==================================================
234 SignalProxy::SignalProxy(QObject *parent)
237 setProxyMode(Client);
242 SignalProxy::SignalProxy(ProxyMode mode, QObject *parent)
250 SignalProxy::SignalProxy(ProxyMode mode, QIODevice *device, QObject *parent)
259 SignalProxy::~SignalProxy()
261 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
262 while (classIter != _syncSlave.end()) {
263 ObjectId::iterator objIter = classIter->begin();
264 while (objIter != classIter->end()) {
265 SyncableObject *obj = objIter.value();
266 objIter = classIter->erase(objIter);
267 obj->stopSynchronize(this);
277 void SignalProxy::setProxyMode(ProxyMode mode)
279 PeerHash::iterator peer = _peers.begin();
280 while (peer != _peers.end()) {
281 if ((*peer)->type() != AbstractPeer::IODevicePeer) {
282 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
283 if (ioPeer->isOpen()) {
284 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
288 if ((*peer)->type() != AbstractPeer::SignalProxyPeer) {
289 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
303 void SignalProxy::init()
305 _heartBeatInterval = 0;
306 _maxHeartBeatCount = 0;
307 _signalRelay = new SignalRelay(this);
308 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
309 setHeartBeatInterval(30);
310 setMaxHeartBeatCount(2);
311 _heartBeatTimer.start();
317 void SignalProxy::initServer()
322 void SignalProxy::initClient()
324 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
328 bool SignalProxy::addPeer(QIODevice *iodev)
333 if (_peers.contains(iodev))
336 if (proxyMode() == Client && !_peers.isEmpty()) {
337 qWarning("SignalProxy: only one peer allowed in client mode!");
341 if (!iodev->isOpen()) {
342 qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
346 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
347 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
350 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(iodev);
352 connect(iodev, SIGNAL(encrypted()), this, SLOT(updateSecureState()));
356 if (!iodev->parent())
357 iodev->setParent(this);
359 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
361 if (_peers.count() == 1)
369 void SignalProxy::setHeartBeatInterval(int secs)
371 if (secs != _heartBeatInterval) {
372 _heartBeatInterval = secs;
373 _heartBeatTimer.setInterval(secs * 1000);
378 void SignalProxy::setMaxHeartBeatCount(int max)
380 _maxHeartBeatCount = max;
384 bool SignalProxy::addPeer(SignalProxy *proxy)
389 if (proxyMode() == proxy->proxyMode()) {
390 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
394 if (_peers.contains(proxy)) {
398 if (proxyMode() == Client && !_peers.isEmpty()) {
399 qWarning("SignalProxy: only one peer allowed in client mode!");
403 _peers[proxy] = new SignalProxyPeer(this, proxy);
404 proxy->addPeer(this);
406 if (_peers.count() == 1)
414 void SignalProxy::removeAllPeers()
416 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
417 // wee need to copy that list since we modify it in the loop
418 QList<QObject *> peers = _peers.keys();
419 foreach(QObject *peer, peers) {
425 void SignalProxy::removePeer(QObject *dev)
427 if (_peers.isEmpty()) {
428 qWarning() << "SignalProxy::removePeer(): No peers in use!";
433 if (!_peers.contains(dev)) {
434 qWarning() << "SignalProxy: unknown Peer" << dev;
438 AbstractPeer *peer = _peers[dev];
441 disconnect(dev, 0, this, 0);
442 if (peer->type() == AbstractPeer::IODevicePeer)
443 emit peerRemoved(static_cast<QIODevice *>(dev));
445 if (peer->type() == AbstractPeer::SignalProxyPeer) {
446 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
447 if (proxy->_peers.contains(this))
448 proxy->removePeer(this);
451 if (dev->parent() == this)
458 if (_peers.isEmpty())
463 void SignalProxy::removePeerBySender()
465 removePeer(sender());
469 void SignalProxy::renameObject(const SyncableObject *obj, const QString &newname, const QString &oldname)
471 if (proxyMode() == Client)
474 const QMetaObject *meta = obj->syncMetaObject();
475 const QByteArray className(meta->className());
476 objectRenamed(className, newname, oldname);
479 params << "__objectRenamed__" << className << newname << oldname;
480 dispatchSignal(RpcCall, params);
484 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname)
486 if (_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
487 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
493 const QMetaObject *SignalProxy::metaObject(const QObject *obj)
495 if (const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
496 return syncObject->syncMetaObject();
498 return obj->metaObject();
502 SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QMetaObject *meta) const
504 if (_extendedMetaObjects.contains(meta))
505 return _extendedMetaObjects[meta];
511 SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
513 if (!_extendedMetaObjects.contains(meta)) {
514 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta, checkConflicts);
516 return _extendedMetaObjects[meta];
520 bool SignalProxy::attachSignal(QObject *sender, const char *signal, const QByteArray &sigName)
522 const QMetaObject *meta = sender->metaObject();
523 QByteArray sig(meta->normalizedSignature(signal).mid(1));
524 int methodId = meta->indexOfMethod(sig.constData());
525 if (methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
526 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
530 createExtendedMetaObject(meta);
531 _signalRelay->attachSignal(sender, methodId, sigName);
533 disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
534 connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
539 bool SignalProxy::attachSlot(const QByteArray &sigName, QObject *recv, const char *slot)
541 const QMetaObject *meta = recv->metaObject();
542 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
543 if (methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
544 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
548 createExtendedMetaObject(meta);
550 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
551 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
553 disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
554 connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
559 void SignalProxy::synchronize(SyncableObject *obj)
561 createExtendedMetaObject(obj, true);
563 // attaching as slave to receive sync Calls
564 QByteArray className(obj->syncMetaObject()->className());
565 _syncSlave[className][obj->objectName()] = obj;
567 if (proxyMode() == Server) {
568 obj->setInitialized();
569 emit objectInitialized(obj);
572 if (obj->isInitialized())
573 emit objectInitialized(obj);
578 obj->synchronize(this);
582 void SignalProxy::detachObject(QObject *obj)
589 void SignalProxy::detachSignals(QObject *sender)
591 _signalRelay->detachSignal(sender);
595 void SignalProxy::detachSlots(QObject *receiver)
597 SlotHash::iterator slotIter = _attachedSlots.begin();
598 while (slotIter != _attachedSlots.end()) {
599 if (slotIter.value().first == receiver) {
600 slotIter = _attachedSlots.erase(slotIter);
608 void SignalProxy::stopSynchronize(SyncableObject *obj)
610 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
611 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
612 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
613 while (classIter != _syncSlave.end()) {
614 if (classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
615 classIter->remove(obj->objectName());
620 obj->stopSynchronize(this);
624 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms)
626 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
627 PeerHash::iterator peer = _peers.begin();
628 while (peer != _peers.end()) {
629 switch ((*peer)->type()) {
630 case AbstractPeer::IODevicePeer:
632 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
633 if (ioPeer->isOpen())
634 ioPeer->dispatchPackedFunc(packedFunc);
636 QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
639 case AbstractPeer::SignalProxyPeer:
640 (*peer)->dispatchSignal(requestType, params);
643 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
650 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc)
652 QVariantList params(packedFunc.toList());
654 if (params.isEmpty()) {
655 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
659 RequestType requestType = (RequestType)params.takeFirst().value<int>();
660 receivePeerSignal(sender, requestType, params);
664 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms)
666 switch (requestType) {
667 // list all RequestTypes that shouldnot trigger a heartbeat counter reset here
671 if (sender->type() == AbstractPeer::IODevicePeer) {
672 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(sender);
673 ioPeer->sentHeartBeats = 0;
677 // qDebug() << "SignalProxy::receivePeerSignal)" << requestType << params;
678 switch (requestType) {
681 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
683 handleSignal(params);
684 //handleSignal(params.takeFirst().toByteArray(), params);
688 handleSync(sender, params);
692 handleInitRequest(sender, params);
696 handleInitData(sender, params);
700 receiveHeartBeat(sender, params);
704 receiveHeartBeatReply(sender, params);
708 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
713 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms)
715 if (!_peers.contains(sender)) {
716 // 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.
717 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
720 receivePeerSignal(_peers[sender], requestType, params);
724 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params)
726 if (params.count() < 3) {
727 qWarning() << "received invalid Sync call" << params;
731 QByteArray className = params.takeFirst().toByteArray();
732 QString objectName = params.takeFirst().toString();
733 QByteArray slot = params.takeFirst().toByteArray();
735 if (!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
736 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
741 SyncableObject *receiver = _syncSlave[className][objectName];
742 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
743 if (!eMeta->slotMap().contains(slot)) {
744 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(slot)).arg(objectName)
749 int slotId = eMeta->slotMap()[slot];
750 if (proxyMode() != eMeta->receiverMode(slotId)) {
751 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed. Wrong ProxyMode!", eMeta->methodName(slotId).constData());
755 QVariant returnValue((QVariant::Type)eMeta->returnType(slotId));
756 if (!invokeSlot(receiver, slotId, params, returnValue)) {
757 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
761 if (returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
762 int receiverId = eMeta->receiveMap()[slotId];
763 QVariantList returnParams;
764 returnParams << className
766 << eMeta->methodName(receiverId);
767 //QByteArray(receiver->metaObject()->method(receiverId).signature());
768 if (eMeta->argTypes(receiverId).count() > 1)
769 returnParams << params;
770 returnParams << returnValue;
771 sender->dispatchSignal(Sync, returnParams);
774 // send emit update signal
775 invokeSlot(receiver, eMeta->updatedRemotelyId());
779 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms)
781 if (params.count() != 2) {
782 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
787 QByteArray className(params[0].toByteArray());
788 QString objectName(params[1].toString());
790 if (!_syncSlave.contains(className)) {
791 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
796 if (!_syncSlave[className].contains(objectName)) {
797 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
798 << className << objectName;
802 SyncableObject *obj = _syncSlave[className][objectName];
804 QVariantList params_;
809 sender->dispatchSignal(InitData, params_);
813 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms)
816 if (params.count() != 3) {
817 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
822 QByteArray className(params[0].toByteArray());
823 QString objectName(params[1].toString());
824 QVariantMap propertyMap(params[2].toMap());
826 if (!_syncSlave.contains(className)) {
827 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
832 if (!_syncSlave[className].contains(objectName)) {
833 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
834 << className << objectName;
838 SyncableObject *obj = _syncSlave[className][objectName];
839 setInitData(obj, propertyMap);
843 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
844 void SignalProxy::handleSignal(const QVariantList &data)
846 QVariantList params = data;
847 QByteArray funcName = params.takeFirst().toByteArray();
851 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
852 while (slot != _attachedSlots.constEnd() && slot.key() == funcName) {
853 receiver = (*slot).first;
854 methodId = (*slot).second;
855 if (!invokeSlot(receiver, methodId, params)) {
856 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
857 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
864 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue)
866 ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
867 const QList<int> args = eMeta->argTypes(methodId);
868 const int numArgs = params.count() < args.count()
872 if (eMeta->minArgCount(methodId) > params.count()) {
873 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
877 void *_a[] = { 0, // return type...
878 0, 0, 0, 0, 0, // and 10 args - that's the max size qt can handle with signals and slots
881 // check for argument compatibility and build params array
882 for (int i = 0; i < numArgs; i++) {
883 if (!params[i].isValid()) {
884 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());
885 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
888 if (args[i] != QMetaType::type(params[i].typeName())) {
889 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
892 _a[i+1] = const_cast<void *>(params[i].constData());
895 if (returnValue.type() != QVariant::Invalid)
896 _a[0] = const_cast<void *>(returnValue.constData());
898 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
899 ? Qt::DirectConnection
900 : Qt::QueuedConnection;
902 if (type == Qt::DirectConnection) {
903 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
906 qWarning() << "Queued Connections are not implemented yet";
907 // note to self: qmetaobject.cpp:990 ff
913 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms)
916 return invokeSlot(receiver, methodId, params, ret);
920 void SignalProxy::dataAvailable()
922 // yet again. it's a private slot. no need for checks.
923 QIODevice *ioDev = qobject_cast<QIODevice *>(sender());
924 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
925 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
927 while (peer->readData(var))
928 receivePackedFunc(peer, var);
932 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed)
934 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
935 if (!dev->isOpen() || (sock && sock->state() != QAbstractSocket::ConnectedState)) {
936 qWarning("SignalProxy: Can't call write on a closed device");
941 QDataStream out(&block, QIODevice::WriteOnly);
942 out.setVersion(QDataStream::Qt_4_2);
947 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
949 itemStream.setVersion(QDataStream::Qt_4_2);
952 rawItem = qCompress(rawItem);
960 out.device()->seek(0);
961 out << (quint32)(block.size() - sizeof(quint32));
967 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed)
973 in.setVersion(QDataStream::Qt_4_2);
975 if (blockSize == 0) {
976 if (dev->bytesAvailable() < (int)sizeof(quint32)) return false;
980 if (blockSize > 1 << 22) {
981 disconnectDevice(dev, tr("Peer tried to send package larger than max package size!"));
985 if (blockSize == 0) {
986 disconnectDevice(dev, tr("Peer tried to send 0 byte package!"));
990 if (dev->bytesAvailable() < blockSize)
999 int nbytes = rawItem.size();
1001 const char *data = rawItem.constData();
1002 if (nbytes < 4 || (data[0] != 0 || data[1] != 0 || data[2] != 0 || data[3] != 0)) {
1003 disconnectDevice(dev, tr("Peer sent corrupted compressed data!"));
1008 rawItem = qUncompress(rawItem);
1010 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
1011 itemStream.setVersion(QDataStream::Qt_4_2);
1018 if (!item.isValid()) {
1019 disconnectDevice(dev, tr("Peer sent corrupt data: unable to load QVariant!"));
1027 void SignalProxy::requestInit(SyncableObject *obj)
1029 if (proxyMode() == Server || obj->isInitialized())
1032 QVariantList params;
1033 params << obj->syncMetaObject()->className()
1034 << obj->objectName();
1035 dispatchSignal(InitRequest, params);
1039 QVariantMap SignalProxy::initData(SyncableObject *obj) const
1041 return obj->toVariantMap();
1045 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties)
1047 if (obj->isInitialized())
1049 obj->fromVariantMap(properties);
1050 obj->setInitialized();
1051 emit objectInitialized(obj);
1052 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
1056 void SignalProxy::sendHeartBeat()
1058 QVariantList heartBeatParams;
1059 heartBeatParams << QTime::currentTime();
1060 QList<IODevicePeer *> toClose;
1062 PeerHash::iterator peer = _peers.begin();
1063 while (peer != _peers.end()) {
1064 if ((*peer)->type() == AbstractPeer::IODevicePeer) {
1065 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
1066 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
1067 if (ioPeer->sentHeartBeats > 0) {
1068 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
1070 if (maxHeartBeatCount() >= 0 && ioPeer->sentHeartBeats >= maxHeartBeatCount())
1071 toClose.append(ioPeer);
1073 ioPeer->sentHeartBeats++;
1078 foreach(IODevicePeer *ioPeer, toClose) {
1079 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
1080 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats *_heartBeatTimer.interval() / 1000 << "seconds)";
1086 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms)
1088 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
1092 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms)
1094 if (peer->type() != AbstractPeer::IODevicePeer) {
1095 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
1099 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
1100 ioPeer->sentHeartBeats = 0;
1102 if (params.isEmpty()) {
1103 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
1107 QTime sendTime = params[0].value<QTime>();
1108 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1112 void SignalProxy::customEvent(QEvent *event)
1114 switch (+event->type()) {
1117 PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
1118 receivePeerSignal(e->sender, e->requestType, e->params);
1124 RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
1125 removePeer(e->peer);
1134 void SignalProxy::sync_call__(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap)
1136 // qDebug() << obj << modeType << "(" << _proxyMode << ")" << funcname;
1137 if (modeType != _proxyMode)
1140 ExtendedMetaObject *eMeta = extendedMetaObject(obj);
1142 QVariantList params;
1143 params << eMeta->metaObject()->className()
1144 << obj->objectName()
1145 << QByteArray(funcname);
1147 const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
1149 for (int i = 0; i < argTypes.size(); i++) {
1150 if (argTypes[i] == 0) {
1151 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
1152 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
1155 params << QVariant(argTypes[i], va_arg(ap, void *));
1158 dispatchSignal(Sync, params);
1162 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason)
1164 if (!reason.isEmpty())
1165 qWarning() << qPrintable(reason);
1166 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1168 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1173 void SignalProxy::updateLag(IODevicePeer *peer, int lag)
1176 if (proxyMode() == Client) {
1177 emit lagUpdated(lag);
1182 void SignalProxy::dumpProxyStats()
1185 if (proxyMode() == Server)
1191 foreach(ObjectId oid, _syncSlave.values())
1192 slaveCount += oid.count();
1195 qDebug() << " Proxy Mode:" << mode;
1196 qDebug() << " attached Slots:" << _attachedSlots.count();
1197 qDebug() << " number of synced Slaves:" << slaveCount;
1198 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
1202 void SignalProxy::updateSecureState()
1204 bool wasSecure = _secure;
1206 _secure = !_peers.isEmpty();
1207 PeerHash::const_iterator peerIter;
1208 for (peerIter = _peers.constBegin(); peerIter != _peers.constEnd(); peerIter++) {
1209 _secure &= (*peerIter)->isSecure();
1212 if (wasSecure != _secure)
1213 emit secureStateChanged(_secure);
1217 // ==================================================
1218 // ExtendedMetaObject
1219 // ==================================================
1220 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
1222 _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
1224 for (int i = 0; i < _meta->methodCount(); i++) {
1225 if (_meta->method(i).methodType() != QMetaMethod::Slot)
1228 if (QByteArray(_meta->method(i).signature()).contains('*'))
1229 continue; // skip methods with ptr params
1231 QByteArray method = methodName(_meta->method(i));
1232 if (method.startsWith("init"))
1233 continue; // skip initializers
1235 if (_methodIds.contains(method)) {
1236 /* funny... moc creates for methods containing default parameters multiple metaMethod with separate methodIds.
1237 we don't care... we just need the full fledged version
1239 const QMetaMethod ¤t = _meta->method(_methodIds[method]);
1240 const QMetaMethod &candidate = _meta->method(i);
1241 if (current.parameterTypes().count() > candidate.parameterTypes().count()) {
1242 int minCount = candidate.parameterTypes().count();
1243 QList<QByteArray> commonParams = current.parameterTypes().mid(0, minCount);
1244 if (commonParams == candidate.parameterTypes())
1245 continue; // we already got the full featured version
1248 int minCount = current.parameterTypes().count();
1249 QList<QByteArray> commonParams = candidate.parameterTypes().mid(0, minCount);
1250 if (commonParams == current.parameterTypes()) {
1251 _methodIds[method] = i; // use the new one
1255 if (checkConflicts) {
1256 qWarning() << "class" << meta->className() << "contains overloaded methods which is currently not supported!";
1257 qWarning() << " - " << _meta->method(i).signature() << "conflicts with" << _meta->method(_methodIds[method]).signature();
1261 _methodIds[method] = i;
1266 const SignalProxy::ExtendedMetaObject::MethodDescriptor &SignalProxy::ExtendedMetaObject::methodDescriptor(int methodId)
1268 if (!_methods.contains(methodId)) {
1269 _methods[methodId] = MethodDescriptor(_meta->method(methodId));
1271 return _methods[methodId];
1275 const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap()
1277 if (_receiveMap.isEmpty()) {
1278 QHash<int, int> receiveMap;
1280 QMetaMethod requestSlot;
1281 QByteArray returnTypeName;
1282 QByteArray signature;
1283 QByteArray methodName;
1287 const int methodCount = _meta->methodCount();
1288 for (int i = 0; i < methodCount; i++) {
1289 requestSlot = _meta->method(i);
1290 if (requestSlot.methodType() != QMetaMethod::Slot)
1293 returnTypeName = requestSlot.typeName();
1294 if (QMetaType::Void == (QMetaType::Type)returnType(i))
1297 signature = QByteArray(requestSlot.signature());
1298 if (!signature.startsWith("request"))
1301 paramsPos = signature.indexOf('(');
1302 if (paramsPos == -1)
1305 methodName = signature.left(paramsPos);
1306 params = signature.mid(paramsPos);
1308 methodName = methodName.replace("request", "receive");
1309 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
1311 signature = QMetaObject::normalizedSignature(methodName + params);
1312 receiverId = _meta->indexOfSlot(signature);
1314 if (receiverId == -1) {
1315 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
1316 receiverId = _meta->indexOfSlot(signature);
1319 if (receiverId != -1) {
1320 receiveMap[i] = receiverId;
1323 _receiveMap = receiveMap;
1329 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method)
1331 QByteArray sig(method.signature());
1332 return sig.left(sig.indexOf("("));
1336 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method)
1338 QString methodname = QString(method.signature()).section("(", 0, 0);
1340 // determine where we have to chop:
1342 if (method.methodType() == QMetaMethod::Slot) {
1343 // we take evertyhing from the first uppercase char if it's slot
1344 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1345 if (upperCharPos == -1)
1347 methodname = methodname.mid(upperCharPos);
1350 // and if it's a signal we discard everything from the last uppercase char
1351 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1352 if (upperCharPos == -1)
1354 methodname = methodname.left(upperCharPos);
1357 methodname[0] = methodname[0].toUpper();
1363 SignalProxy::ExtendedMetaObject::MethodDescriptor::MethodDescriptor(const QMetaMethod &method)
1364 : _methodName(SignalProxy::ExtendedMetaObject::methodName(method)),
1365 _returnType(QMetaType::type(method.typeName()))
1367 // determine argTypes
1368 QList<QByteArray> paramTypes = method.parameterTypes();
1369 QList<int> argTypes;
1370 for (int i = 0; i < paramTypes.count(); i++) {
1371 argTypes.append(QMetaType::type(paramTypes[i]));
1373 _argTypes = argTypes;
1375 // determine minArgCount
1376 QString signature(method.signature());
1377 _minArgCount = method.parameterTypes().count() - signature.count("=");
1379 _receiverMode = (_methodName.startsWith("request"))
1380 ? SignalProxy::Server
1381 : SignalProxy::Client;