/***************************************************************************
- * Copyright (C) 2005-07 by the Quassel IRC Team *
+ * Copyright (C) 2005-2015 by the Quassel Project *
* devel@quassel-irc.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
+ * (at your option) version 3. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************
- * SignalProxy has been inspired by QxtRPCPeer, part of libqxt, *
- * the Qt eXTension Library <http://www.libqxt.org>. We would like to *
- * thank Arvid "aep" Picciani and Adam "ahigerd" Higerd for providing *
- * QxtRPCPeer, valuable input and the genius idea to (ab)use Qt's *
- * Meta Object System for transmitting signals over the network. *
- * *
- * To make contribution back into libqxt possible, redistribution and *
- * modification of this file is additionally allowed under the terms of *
- * the Common Public License, version 1.0, as published by IBM. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
-#include "signalproxy.h"
-#include <QObject>
-#include <QIODevice>
-#include <QAbstractSocket>
-#include <QHash>
-#include <QMultiHash>
-#include <QList>
-#include <QSet>
-#include <QDebug>
+#include <QCoreApplication>
+#include <QHostAddress>
#include <QMetaMethod>
+#include <QMetaProperty>
+#include <QThread>
+
+#ifdef HAVE_SSL
+ #include <QSslSocket>
+#endif
+
+#include "signalproxy.h"
+
+#include "peer.h"
+#include "protocol.h"
+#include "syncableobject.h"
+#include "util.h"
+#include "types.h"
+
+using namespace Protocol;
+
+class RemovePeerEvent : public QEvent
+{
+public:
+ RemovePeerEvent(Peer *peer) : QEvent(QEvent::Type(SignalProxy::RemovePeerEvent)), peer(peer) {}
+ Peer *peer;
+};
-class SignalRelay: public QObject {
+// ==================================================
+// SignalRelay
+// ==================================================
+class SignalProxy::SignalRelay : public QObject
+{
/* Q_OBJECT is not necessary or even allowed, because we implement
qt_metacall ourselves (and don't use any other features of the meta
object system)
*/
public:
- SignalRelay(SignalProxy* parent, QObject* source);
- int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
+ SignalRelay(SignalProxy *parent) : QObject(parent), _proxy(parent) {}
+ inline SignalProxy *proxy() const { return _proxy; }
- void attachSignal(int methodId, const QByteArray &func);
+ int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
+
+ void attachSignal(QObject *sender, int signalId, const QByteArray &funcName);
+ void detachSignal(QObject *sender, int signalId = -1);
- int sigCount() const;
-
private:
- SignalProxy* proxy;
- QObject* caller;
- QMultiHash<int, QByteArray> sigNames;
+ struct Signal {
+ QObject *sender;
+ int signalId;
+ QByteArray signature;
+ Signal(QObject *sender, int sigId, const QByteArray &signature) : sender(sender), signalId(sigId), signature(signature) {}
+ Signal() : sender(0), signalId(-1) {}
+ };
+
+ SignalProxy *_proxy;
+ QHash<int, Signal> _slots;
};
-SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
- : QObject(parent),
- proxy(parent),
- caller(source)
+
+void SignalProxy::SignalRelay::attachSignal(QObject *sender, int signalId, const QByteArray &funcName)
+{
+ // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
+ // all connected methodIds are offset by the standard methodCount of QObject
+ int slotId;
+ for (int i = 0;; i++) {
+ if (!_slots.contains(i)) {
+ slotId = i;
+ break;
+ }
+ }
+
+ QByteArray fn;
+ if (!funcName.isEmpty()) {
+ fn = QMetaObject::normalizedSignature(funcName);
+ }
+ else {
+ fn = SIGNAL(fakeMethodSignature());
+#if QT_VERSION >= 0x050000
+ fn = fn.replace("fakeMethodSignature()", sender->metaObject()->method(signalId).methodSignature());
+#else
+ fn = fn.replace("fakeMethodSignature()", sender->metaObject()->method(signalId).signature());
+#endif
+ }
+
+ _slots[slotId] = Signal(sender, signalId, fn);
+
+ QMetaObject::connect(sender, signalId, this, QObject::staticMetaObject.methodCount() + slotId);
+}
+
+
+void SignalProxy::SignalRelay::detachSignal(QObject *sender, int signalId)
{
- QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
+ QHash<int, Signal>::iterator slotIter = _slots.begin();
+ while (slotIter != _slots.end()) {
+ if (slotIter->sender == sender && (signalId == -1 || slotIter->signalId == signalId)) {
+ slotIter = _slots.erase(slotIter);
+ if (signalId != -1)
+ break;
+ }
+ else {
+ ++slotIter;
+ }
+ }
}
-int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
- _id = QObject::qt_metacall(_c, _id, _a);
- if(_id < 0)
+
+int SignalProxy::SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
+{
+ _id = QObject::qt_metacall(_c, _id, _a);
+ if (_id < 0)
+ return _id;
+
+ if (_c == QMetaObject::InvokeMetaMethod) {
+ if (_slots.contains(_id)) {
+ QObject *caller = sender();
+
+ SignalProxy::ExtendedMetaObject *eMeta = proxy()->extendedMetaObject(caller->metaObject());
+ Q_ASSERT(eMeta);
+
+ const Signal &signal = _slots[_id];
+
+ QVariantList params;
+
+ const QList<int> &argTypes = eMeta->argTypes(signal.signalId);
+ for (int i = 0; i < argTypes.size(); i++) {
+ if (argTypes[i] == 0) {
+#if QT_VERSION >= 0x050000
+ qWarning() << "SignalRelay::qt_metacall(): received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(caller->metaObject()->className()).arg(caller->metaObject()->method(signal.signalId).methodSignature().constData());
+#else
+ qWarning() << "SignalRelay::qt_metacall(): received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(caller->metaObject()->className()).arg(caller->metaObject()->method(signal.signalId).signature());
+#endif
+ qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
+ return _id;
+ }
+ params << QVariant(argTypes[i], _a[i+1]);
+ }
+
+ if (argTypes.size() >= 1 && argTypes[0] == qMetaTypeId<PeerPtr>() && proxy()->proxyMode() == SignalProxy::Server) {
+ Peer *peer = params[0].value<PeerPtr>();
+ proxy()->dispatch(peer, RpcCall(signal.signature, params));
+ } else
+ proxy()->dispatch(RpcCall(signal.signature, params));
+ }
+ _id -= _slots.count();
+ }
return _id;
- if(_c == QMetaObject::InvokeMetaMethod) {
- if(sigNames.contains(_id)) {
- const QList<int> &argTypes = proxy->argTypes(caller, _id);
- QVariantList params;
- int n = argTypes.size();
- for(int i=0; i<n; i++)
- params.append(QVariant(argTypes[i], _a[i+1]));
- QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
- while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
- proxy->call(funcIter.value(), params);
- funcIter++;
- }
- }
- _id -= 1;
- }
- return _id;
-}
-
-int SignalRelay::sigCount() const {
- // only for debuging purpose
- return sigNames.count();
-}
-
-void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
- // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
- // all connected methodIds are offset by the standard methodCount of QObject
- if(!sigNames.contains(methodId))
- QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
-
- QByteArray fn;
- if(!func.isEmpty()) {
- fn = QMetaObject::normalizedSignature(func);
- } else {
- fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
- }
- sigNames.insert(methodId, fn);
-}
-// ====================
-// END SIGNALRELAY
-// ====================
-
-
-// ====================
+}
+
+
+// ==================================================
// SignalProxy
-// ====================
-SignalProxy::SignalProxy(QObject* parent)
- : QObject(parent),
- _proxyMode(Client)
+// ==================================================
+SignalProxy::SignalProxy(QObject *parent)
+ : QObject(parent)
{
+ setProxyMode(Client);
+ init();
}
-SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
- : QObject(parent),
- _proxyMode(mode)
+
+SignalProxy::SignalProxy(ProxyMode mode, QObject *parent)
+ : QObject(parent)
{
+ setProxyMode(mode);
+ init();
}
-SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
- : QObject(parent),
- _proxyMode(mode)
+
+SignalProxy::~SignalProxy()
{
- addPeer(device);
-}
+ QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
+ while (classIter != _syncSlave.end()) {
+ ObjectId::iterator objIter = classIter->begin();
+ while (objIter != classIter->end()) {
+ SyncableObject *obj = objIter.value();
+ objIter = classIter->erase(objIter);
+ obj->stopSynchronize(this);
+ }
+ ++classIter;
+ }
+ _syncSlave.clear();
-SignalProxy::~SignalProxy() {
- QList<QObject*> senders = _relayHash.keys();
- foreach(QObject* sender, senders)
- detachObject(sender);
+ removeAllPeers();
}
-void SignalProxy::setProxyMode(ProxyMode mode) {
- foreach(QIODevice* peer, _peerByteCount.keys()) {
- if(peer->isOpen()) {
- qWarning() << "SignalProxy: Cannot change proxy mode while connected";
- return;
+
+void SignalProxy::setProxyMode(ProxyMode mode)
+{
+ if (_peers.count()) {
+ qWarning() << Q_FUNC_INFO << "Cannot change proxy mode while connected";
+ return;
}
- }
- _proxyMode = mode;
+
+ _proxyMode = mode;
+ if (mode == Server)
+ initServer();
+ else
+ initClient();
+}
+
+
+void SignalProxy::init()
+{
+ _heartBeatInterval = 0;
+ _maxHeartBeatCount = 0;
+ _signalRelay = new SignalRelay(this);
+ setHeartBeatInterval(30);
+ setMaxHeartBeatCount(2);
+ _secure = false;
+ updateSecureState();
+}
+
+
+void SignalProxy::initServer()
+{
}
-SignalProxy::ProxyMode SignalProxy::proxyMode() const {
- return _proxyMode;
+void SignalProxy::initClient()
+{
+ attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray,QString,QString)));
}
-bool SignalProxy::addPeer(QIODevice* iodev) {
- if(!iodev)
- return false;
-
- if(_peerByteCount.contains(iodev))
+
+void SignalProxy::setHeartBeatInterval(int secs)
+{
+ if (_heartBeatInterval != secs) {
+ _heartBeatInterval = secs;
+ emit heartBeatIntervalChanged(secs);
+ }
+}
+
+
+void SignalProxy::setMaxHeartBeatCount(int max)
+{
+ if (_maxHeartBeatCount != max) {
+ _maxHeartBeatCount = max;
+ emit maxHeartBeatCountChanged(max);
+ }
+}
+
+
+bool SignalProxy::addPeer(Peer *peer)
+{
+ if (!peer)
+ return false;
+
+ if (_peers.contains(peer))
+ return true;
+
+ if (!peer->isOpen()) {
+ qWarning("SignalProxy: peer needs to be open!");
+ return false;
+ }
+
+ if (proxyMode() == Client) {
+ if (!_peers.isEmpty()) {
+ qWarning("SignalProxy: only one peer allowed in client mode!");
+ return false;
+ }
+ connect(peer, SIGNAL(lagUpdated(int)), SIGNAL(lagUpdated(int)));
+ }
+
+ connect(peer, SIGNAL(disconnected()), SLOT(removePeerBySender()));
+ connect(peer, SIGNAL(secureStateChanged(bool)), SLOT(updateSecureState()));
+
+ if (!peer->parent())
+ peer->setParent(this);
+
+ _peers.insert(peer);
+
+ peer->setSignalProxy(this);
+
+ if (_peers.count() == 1)
+ emit connected();
+
+ updateSecureState();
return true;
+}
- if(proxyMode() == Client && !_peerByteCount.isEmpty()) {
- qWarning("SignalProxy: only one peer allowed in client mode!");
- return false;
- }
- if(!iodev->isOpen())
- qWarning("SignalProxy::the device you passed is not open!");
+void SignalProxy::removeAllPeers()
+{
+ Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
+ // wee need to copy that list since we modify it in the loop
+ QSet<Peer *> peers = _peers;
+ foreach(Peer *peer, peers) {
+ removePeer(peer);
+ }
+}
+
- connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
- connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
+void SignalProxy::removePeer(Peer *peer)
+{
+ if (!peer) {
+ qWarning() << Q_FUNC_INFO << "Trying to remove a null peer!";
+ return;
+ }
- QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(iodev);
- if(sock) {
- connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
- }
+ if (_peers.isEmpty()) {
+ qWarning() << "SignalProxy::removePeer(): No peers in use!";
+ return;
+ }
- _peerByteCount[iodev] = 0;
+ if (!_peers.contains(peer)) {
+ qWarning() << "SignalProxy: unknown Peer" << peer;
+ return;
+ }
- if(_peerByteCount.count() == 1)
- emit connected();
+ disconnect(peer, 0, this, 0);
+ peer->setSignalProxy(0);
- return true;
+ _peers.remove(peer);
+ emit peerRemoved(peer);
+
+ if (peer->parent() == this)
+ peer->deleteLater();
+
+ updateSecureState();
+
+ if (_peers.isEmpty())
+ emit disconnected();
}
-void SignalProxy::removePeerBySender() {
- // OK we're brutal here... but since it's a private slot we know what we've got connected to it...
- QIODevice *ioDev = (QIODevice *)(sender());
- removePeer(ioDev);
+
+void SignalProxy::removePeerBySender()
+{
+ removePeer(qobject_cast<Peer *>(sender()));
}
-void SignalProxy::removePeer(QIODevice* iodev) {
- if(_peerByteCount.isEmpty()) {
- qWarning() << "SignalProxy: No peers in use!";
- return;
- }
- if(proxyMode() == Server && !iodev) {
- // disconnect all
- QList<QIODevice *> peers = _peerByteCount.keys();
- foreach(QIODevice *peer, peers)
- removePeer(peer);
- }
+void SignalProxy::renameObject(const SyncableObject *obj, const QString &newname, const QString &oldname)
+{
+ if (proxyMode() == Client)
+ return;
+
+ const QMetaObject *meta = obj->syncMetaObject();
+ const QByteArray className(meta->className());
+ objectRenamed(className, newname, oldname);
+
+ dispatch(RpcCall("__objectRenamed__", QVariantList() << className << newname << oldname));
+}
+
+
+void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname)
+{
+ if (_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
+ SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
+ requestInit(obj);
+ }
+}
+
- if(proxyMode() != Server && !iodev)
- iodev = _peerByteCount.keys().first();
+const QMetaObject *SignalProxy::metaObject(const QObject *obj)
+{
+ if (const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
+ return syncObject->syncMetaObject();
+ else
+ return obj->metaObject();
+}
- Q_ASSERT(iodev);
- if(!_peerByteCount.contains(iodev)) {
- qWarning() << "SignalProxy: unknown QIODevice" << iodev;
- return;
- }
-
- // take a last gasp
- while(true) {
- QVariant var;
- if(readDataFromDevice(iodev, _peerByteCount[iodev], var))
- receivePeerSignal(var);
+SignalProxy::ExtendedMetaObject *SignalProxy::extendedMetaObject(const QMetaObject *meta) const
+{
+ if (_extendedMetaObjects.contains(meta))
+ return _extendedMetaObjects[meta];
else
- break;
- }
- _peerByteCount.remove(iodev);
+ return 0;
+}
+
+
+SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
+{
+ if (!_extendedMetaObjects.contains(meta)) {
+ _extendedMetaObjects[meta] = new ExtendedMetaObject(meta, checkConflicts);
+ }
+ return _extendedMetaObjects[meta];
+}
+
+
+bool SignalProxy::attachSignal(QObject *sender, const char *signal, const QByteArray &sigName)
+{
+ const QMetaObject *meta = sender->metaObject();
+ QByteArray sig(meta->normalizedSignature(signal).mid(1));
+ int methodId = meta->indexOfMethod(sig.constData());
+ if (methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
+ qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
+ return false;
+ }
+
+ createExtendedMetaObject(meta);
+ _signalRelay->attachSignal(sender, methodId, sigName);
+
+ disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
+ connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
+ return true;
+}
+
+
+bool SignalProxy::attachSlot(const QByteArray &sigName, QObject *recv, const char *slot)
+{
+ const QMetaObject *meta = recv->metaObject();
+ int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
+ if (methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
+ qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
+ return false;
+ }
+
+ createExtendedMetaObject(meta);
+
+ QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
+ _attachedSlots.insert(funcName, qMakePair(recv, methodId));
+
+ disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
+ connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
+ return true;
+}
+
+
+void SignalProxy::synchronize(SyncableObject *obj)
+{
+ createExtendedMetaObject(obj, true);
+
+ // attaching as slave to receive sync Calls
+ QByteArray className(obj->syncMetaObject()->className());
+ _syncSlave[className][obj->objectName()] = obj;
- disconnect(iodev, 0, this, 0);
- emit peerRemoved(iodev);
+ if (proxyMode() == Server) {
+ obj->setInitialized();
+ emit objectInitialized(obj);
+ }
+ else {
+ if (obj->isInitialized())
+ emit objectInitialized(obj);
+ else
+ requestInit(obj);
+ }
+
+ obj->synchronize(this);
+}
- if(_peerByteCount.isEmpty())
- emit disconnected();
+
+void SignalProxy::detachObject(QObject *obj)
+{
+ detachSignals(obj);
+ detachSlots(obj);
}
-void SignalProxy::setArgTypes(QObject* obj, int methodId) {
- QList<QByteArray> p = obj->metaObject()->method(methodId).parameterTypes();
- QList<int> argTypes;
- int ct = p.count();
- for(int i=0; i<ct; i++)
- argTypes.append(QMetaType::type(p.value(i)));
- const QByteArray &className(obj->metaObject()->className());
- Q_ASSERT(_classInfo.contains(className));
- Q_ASSERT(!_classInfo[className]->argTypes.contains(methodId));
- _classInfo[className]->argTypes[methodId] = argTypes;
+void SignalProxy::detachSignals(QObject *sender)
+{
+ _signalRelay->detachSignal(sender);
}
-const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
- const QByteArray &className(obj->metaObject()->className());
- Q_ASSERT(_classInfo.contains(className));
- if(!_classInfo[className]->argTypes.contains(methodId))
- setArgTypes(obj, methodId);
- return _classInfo[className]->argTypes[methodId];
+
+void SignalProxy::detachSlots(QObject *receiver)
+{
+ SlotHash::iterator slotIter = _attachedSlots.begin();
+ while (slotIter != _attachedSlots.end()) {
+ if (slotIter.value().first == receiver) {
+ slotIter = _attachedSlots.erase(slotIter);
+ }
+ else
+ ++slotIter;
+ }
}
-void SignalProxy::setMethodName(QObject *obj, int methodId) {
- const QByteArray &className(obj->metaObject()->className());
- QByteArray method = obj->metaObject()->method(methodId).signature();
- method = method.left(method.indexOf('('));
- Q_ASSERT(_classInfo.contains(className));
- Q_ASSERT(!_classInfo[className]->methodNames.contains(methodId));
- _classInfo[className]->methodNames[methodId] = method;
+void SignalProxy::stopSynchronize(SyncableObject *obj)
+{
+ // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
+ // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
+ QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
+ while (classIter != _syncSlave.end()) {
+ if (classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
+ classIter->remove(obj->objectName());
+ break;
+ }
+ ++classIter;
+ }
+ obj->stopSynchronize(this);
}
-const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
- QByteArray className(obj->metaObject()->className());
- Q_ASSERT(_classInfo.contains(className));
- if(!_classInfo[className]->methodNames.contains(methodId))
- setMethodName(obj, methodId);
- return _classInfo[className]->methodNames[methodId];
+
+template<class T>
+void SignalProxy::dispatch(const T &protoMessage)
+{
+ foreach (Peer *peer, _peers) {
+ if (peer->isOpen())
+ peer->dispatch(protoMessage);
+ else
+ QCoreApplication::postEvent(this, new ::RemovePeerEvent(peer));
+ }
}
-void SignalProxy::createClassInfo(QObject *obj) {
- QByteArray className(obj->metaObject()->className());
- if(!_classInfo.contains(className))
- _classInfo[className] = new ClassInfo();
+template<class T>
+void SignalProxy::dispatch(Peer *peer, const T &protoMessage)
+{
+ if (peer && peer->isOpen())
+ peer->dispatch(protoMessage);
+ else
+ QCoreApplication::postEvent(this, new ::RemovePeerEvent(peer));
}
-bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
- const QMetaObject* meta = sender->metaObject();
- QByteArray sig(meta->normalizedSignature(signal).mid(1));
- int methodId = meta->indexOfMethod(sig.constData());
- if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
- qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
- return false;
- }
- createClassInfo(sender);
+void SignalProxy::handle(Peer *peer, const SyncMessage &syncMessage)
+{
+ if (!_syncSlave.contains(syncMessage.className) || !_syncSlave[syncMessage.className].contains(syncMessage.objectName)) {
+ qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(syncMessage.className, syncMessage.slotName, syncMessage.objectName)
+ << syncMessage.params;
+ return;
+ }
+
+ SyncableObject *receiver = _syncSlave[syncMessage.className][syncMessage.objectName];
+ ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
+ if (!eMeta->slotMap().contains(syncMessage.slotName)) {
+ qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(syncMessage.className, syncMessage.slotName, syncMessage.objectName)
+ << syncMessage.params;
+ return;
+ }
+
+ int slotId = eMeta->slotMap()[syncMessage.slotName];
+ if (proxyMode() != eMeta->receiverMode(slotId)) {
+ qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed. Wrong ProxyMode!", eMeta->methodName(slotId).constData());
+ return;
+ }
+
+ // We can no longer construct a QVariant from QMetaType::Void
+ QVariant returnValue;
+ int returnType = eMeta->returnType(slotId);
+ if (returnType != QMetaType::Void)
+ returnValue = QVariant(static_cast<QVariant::Type>(returnType));
- SignalRelay* relay;
- if(_relayHash.contains(sender))
- relay = _relayHash[sender];
- else
- relay = _relayHash[sender] = new SignalRelay(this, sender);
+ if (!invokeSlot(receiver, slotId, syncMessage.params, returnValue, peer)) {
+ qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
+ return;
+ }
- relay->attachSignal(methodId, sigName);
+ if (returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
+ int receiverId = eMeta->receiveMap()[slotId];
+ QVariantList returnParams;
+ if (eMeta->argTypes(receiverId).count() > 1)
+ returnParams << syncMessage.params;
+ returnParams << returnValue;
+ peer->dispatch(SyncMessage(syncMessage.className, syncMessage.objectName, eMeta->methodName(receiverId), returnParams));
+ }
- return true;
+ // send emit update signal
+ invokeSlot(receiver, eMeta->updatedRemotelyId());
}
-bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
- const QMetaObject* meta = recv->metaObject();
- int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
- if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
- qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
- return false;
- }
+void SignalProxy::handle(Peer *peer, const InitRequest &initRequest)
+{
+ if (!_syncSlave.contains(initRequest.className)) {
+ qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
+ << initRequest.className;
+ return;
+ }
+
+ if (!_syncSlave[initRequest.className].contains(initRequest.objectName)) {
+ qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
+ << initRequest.className << initRequest.objectName;
+ return;
+ }
- createClassInfo(recv);
+ SyncableObject *obj = _syncSlave[initRequest.className][initRequest.objectName];
+ peer->dispatch(InitData(initRequest.className, initRequest.objectName, initData(obj)));
+}
- QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
- _attachedSlots.insert(funcName, qMakePair(recv, methodId));
- QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
- QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
- return true;
+void SignalProxy::handle(Peer *peer, const InitData &initData)
+{
+ Q_UNUSED(peer)
+
+ if (!_syncSlave.contains(initData.className)) {
+ qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
+ << initData.className;
+ return;
+ }
+
+ if (!_syncSlave[initData.className].contains(initData.objectName)) {
+ qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
+ << initData.className << initData.objectName;
+ return;
+ }
+
+ SyncableObject *obj = _syncSlave[initData.className][initData.objectName];
+ setInitData(obj, initData.initData);
}
-void SignalProxy::detachSender() {
- // this is a slot so we can bypass the QueuedConnection
- // and if someone is forcing direct connection in a multithreaded environment he's just nuts...
- _detachSignals(sender());
- _detachSlots(sender());
+void SignalProxy::handle(Peer *peer, const RpcCall &rpcCall)
+{
+ QObject *receiver;
+ int methodId;
+ SlotHash::const_iterator slot = _attachedSlots.constFind(rpcCall.slotName);
+ while (slot != _attachedSlots.constEnd() && slot.key() == rpcCall.slotName) {
+ receiver = (*slot).first;
+ methodId = (*slot).second;
+ if (!invokeSlot(receiver, methodId, rpcCall.params, peer)) {
+ ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
+ qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
+ }
+ ++slot;
+ }
}
-// detachObject/Signals/Slots() can be called as a result of an incoming call
-// this might destroy our the iterator used for delivery
-// thus we wrap the actual disconnection by using QueuedConnections
-void SignalProxy::detachObject(QObject* obj) {
- detachSignals(obj);
- detachSlots(obj);
+
+bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue, Peer *peer)
+{
+ ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
+ const QList<int> args = eMeta->argTypes(methodId);
+ const int numArgs = params.count() < args.count()
+ ? params.count()
+ : args.count();
+
+ if (eMeta->minArgCount(methodId) > params.count()) {
+ qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
+ return false;
+ }
+
+ void *_a[] = { 0, // return type...
+ 0, 0, 0, 0, 0, // and 10 args - that's the max size qt can handle with signals and slots
+ 0, 0, 0, 0, 0 };
+
+ // check for argument compatibility and build params array
+ for (int i = 0; i < numArgs; i++) {
+ if (!params[i].isValid()) {
+#if QT_VERSION >= 0x050000
+ qWarning() << "SignalProxy::invokeSlot(): received invalid data for argument number" << i << "of method" << QString("%1::%2()").arg(receiver->metaObject()->className()).arg(receiver->metaObject()->method(methodId).methodSignature().constData());
+#else
+ 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());
+#endif
+ qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
+ return false;
+ }
+ if (args[i] != QMetaType::type(params[i].typeName())) {
+ qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
+ return false;
+ }
+ // if first arg is a PeerPtr, replace it by the address of the peer originally receiving the RpcCall
+ if (peer && i == 0 && args[0] == qMetaTypeId<PeerPtr>()) {
+ QVariant v = QVariant::fromValue<PeerPtr>(peer);
+ _a[1] = const_cast<void*>(v.constData());
+ } else
+ _a[i+1] = const_cast<void *>(params[i].constData());
+ }
+
+ if (returnValue.type() != QVariant::Invalid)
+ _a[0] = const_cast<void *>(returnValue.constData());
+
+ Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
+ ? Qt::DirectConnection
+ : Qt::QueuedConnection;
+
+ if (type == Qt::DirectConnection) {
+ return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
+ }
+ else {
+ qWarning() << "Queued Connections are not implemented yet";
+ // note to self: qmetaobject.cpp:990 ff
+ return false;
+ }
}
-void SignalProxy::detachSignals(QObject* sender) {
- QMetaObject::invokeMethod(this, "_detachSignals",
- Qt::QueuedConnection,
- Q_ARG(QObject*, sender));
+
+bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, Peer *peer)
+{
+ QVariant ret;
+ return invokeSlot(receiver, methodId, params, ret, peer);
}
-void SignalProxy::detachSlots(QObject* receiver) {
- QMetaObject::invokeMethod(this, "_detachSlots",
- Qt::QueuedConnection,
- Q_ARG(QObject*, receiver));
+
+void SignalProxy::requestInit(SyncableObject *obj)
+{
+ if (proxyMode() == Server || obj->isInitialized())
+ return;
+
+ dispatch(InitRequest(obj->syncMetaObject()->className(), obj->objectName()));
}
-void SignalProxy::_detachSignals(QObject* sender) {
- if(!_relayHash.contains(sender))
- return;
- _relayHash.take(sender)->deleteLater();
+
+QVariantMap SignalProxy::initData(SyncableObject *obj) const
+{
+ return obj->toVariantMap();
}
-void SignalProxy::_detachSlots(QObject* receiver) {
- SlotHash::iterator slotIter = _attachedSlots.begin();
- while(slotIter != _attachedSlots.end()) {
- if(slotIter.value().first == receiver) {
- slotIter = _attachedSlots.erase(slotIter);
+
+void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties)
+{
+ if (obj->isInitialized())
+ return;
+ obj->fromVariantMap(properties);
+ obj->setInitialized();
+ emit objectInitialized(obj);
+ invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
+}
+
+
+void SignalProxy::customEvent(QEvent *event)
+{
+ switch ((int)event->type()) {
+ case RemovePeerEvent: {
+ ::RemovePeerEvent *e = static_cast< ::RemovePeerEvent *>(event);
+ removePeer(e->peer);
+ event->accept();
+ break;
+ }
+
+ default:
+ qWarning() << Q_FUNC_INFO << "Received unknown custom event:" << event->type();
+ return;
+ }
+}
+
+
+void SignalProxy::sync_call__(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap)
+{
+ // qDebug() << obj << modeType << "(" << _proxyMode << ")" << funcname;
+ if (modeType != _proxyMode)
+ return;
+
+ ExtendedMetaObject *eMeta = extendedMetaObject(obj);
+
+ QVariantList params;
+
+ const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
+
+ for (int i = 0; i < argTypes.size(); i++) {
+ if (argTypes[i] == 0) {
+ qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
+ qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
+ return;
+ }
+ params << QVariant(argTypes[i], va_arg(ap, void *));
+ }
+
+ if (argTypes.size() >= 1 && argTypes[0] == qMetaTypeId<PeerPtr>() && proxyMode() == SignalProxy::Server) {
+ Peer *peer = params[0].value<PeerPtr>();
+ dispatch(peer, SyncMessage(eMeta->metaObject()->className(), obj->objectName(), QByteArray(funcname), params));
} else
- slotIter++;
- }
-}
-
-void SignalProxy::call(const char* signal, QVariant p1, QVariant p2, QVariant p3, QVariant p4, QVariant p5, QVariant p6, QVariant p7, QVariant p8, QVariant p9) {
- QByteArray func = QMetaObject::normalizedSignature(signal);
- QVariantList params;
- params << p1 << p2 << p3 << p4 << p5 << p6 << p7 << p8 << p9;
- call(func, params);
-}
-
-void SignalProxy::call(const QByteArray &funcName, const QVariantList ¶ms) {
- QVariantList packedFunc;
- packedFunc << funcName;
- packedFunc << params;
- foreach(QIODevice* dev, _peerByteCount.keys())
- writeDataToDevice(dev, QVariant(packedFunc));
-}
-
-void SignalProxy::receivePeerSignal(const QVariant &packedFunc) {
- QVariantList params(packedFunc.toList());
- QByteArray funcName = params.takeFirst().toByteArray();
- int numParams, methodId;
- QObject* receiver;
-
- SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
- while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
- receiver = (*slot).first;
- methodId = (*slot).second;
- numParams = argTypes(receiver, methodId).count();
- QGenericArgument args[9];
- for(int i = 0; i < numParams; i++)
- args[i] = QGenericArgument(params[i].typeName(), params[i].constData());
- if(!QMetaObject::invokeMethod(receiver, methodName(receiver, methodId),
- args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8])) {
- qWarning("SignalProxy::receivePeerSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
- }
- slot++;
- }
-}
-
-void SignalProxy::dataAvailable() {
- // yet again. it's a private slot. no need for checks.
- QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
- QVariant var;
- while(readDataFromDevice(ioDev, _peerByteCount[ioDev], var))
- receivePeerSignal(var);
-}
-
-void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item) {
- QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
- if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
- qWarning("SignalProxy: Can't call on a closed device");
- return;
- }
- QByteArray block;
- QDataStream out(&block, QIODevice::WriteOnly);
- out.setVersion(QDataStream::Qt_4_2);
- out << (quint32)0 << item;
- out.device()->seek(0);
- out << (quint32)(block.size() - sizeof(quint32));
- dev->write(block);
-}
-
-bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item) {
- QDataStream in(dev);
- in.setVersion(QDataStream::Qt_4_2);
-
- if(blockSize == 0) {
- if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
- in >> blockSize;
- }
-
- if(dev->bytesAvailable() < blockSize)
- return false;
- in >> item;
- blockSize = 0;
- return true;
-}
-
-void SignalProxy::dumpProxyStats() {
- QString mode;
- if(proxyMode() == Server)
- mode = "Server";
- else
- mode = "Client";
-
- int sigCount = 0;
- foreach(SignalRelay *relay, _relayHash.values())
- sigCount += relay->sigCount();
-
- qDebug() << this;
- qDebug() << " Proxy Mode:" << mode;
- qDebug() << "attached sending Objects:" << _relayHash.count();
- qDebug() << " Number of Signals:" << sigCount;
- qDebug() << " attached Slots:" << _attachedSlots.count();
- qDebug() << "number of Classes cached:" << _classInfo.count();
+ dispatch(SyncMessage(eMeta->metaObject()->className(), obj->objectName(), QByteArray(funcname), params));
+}
+
+
+void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason)
+{
+ if (!reason.isEmpty())
+ qWarning() << qPrintable(reason);
+ QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
+ if (sock)
+ qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
+ dev->close();
+}
+
+
+void SignalProxy::dumpProxyStats()
+{
+ QString mode;
+ if (proxyMode() == Server)
+ mode = "Server";
+ else
+ mode = "Client";
+
+ int slaveCount = 0;
+ foreach(ObjectId oid, _syncSlave.values())
+ slaveCount += oid.count();
+
+ qDebug() << this;
+ qDebug() << " Proxy Mode:" << mode;
+ qDebug() << " attached Slots:" << _attachedSlots.count();
+ qDebug() << " number of synced Slaves:" << slaveCount;
+ qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
+}
+
+
+void SignalProxy::updateSecureState()
+{
+ bool wasSecure = _secure;
+
+ _secure = !_peers.isEmpty();
+ foreach (const Peer *peer, _peers) {
+ _secure &= peer->isSecure();
+ }
+
+ if (wasSecure != _secure)
+ emit secureStateChanged(_secure);
+}
+
+
+// ==================================================
+// ExtendedMetaObject
+// ==================================================
+SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
+ : _meta(meta),
+ _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
+{
+ for (int i = 0; i < _meta->methodCount(); i++) {
+ if (_meta->method(i).methodType() != QMetaMethod::Slot)
+ continue;
+
+#if QT_VERSION >= 0x050000
+ if (_meta->method(i).methodSignature().contains('*'))
+#else
+ if (QByteArray(_meta->method(i).signature()).contains('*'))
+#endif
+ continue; // skip methods with ptr params
+
+ QByteArray method = methodName(_meta->method(i));
+ if (method.startsWith("init"))
+ continue; // skip initializers
+
+ if (_methodIds.contains(method)) {
+ /* funny... moc creates for methods containing default parameters multiple metaMethod with separate methodIds.
+ we don't care... we just need the full fledged version
+ */
+ const QMetaMethod ¤t = _meta->method(_methodIds[method]);
+ const QMetaMethod &candidate = _meta->method(i);
+ if (current.parameterTypes().count() > candidate.parameterTypes().count()) {
+ int minCount = candidate.parameterTypes().count();
+ QList<QByteArray> commonParams = current.parameterTypes().mid(0, minCount);
+ if (commonParams == candidate.parameterTypes())
+ continue; // we already got the full featured version
+ }
+ else {
+ int minCount = current.parameterTypes().count();
+ QList<QByteArray> commonParams = candidate.parameterTypes().mid(0, minCount);
+ if (commonParams == current.parameterTypes()) {
+ _methodIds[method] = i; // use the new one
+ continue;
+ }
+ }
+ if (checkConflicts) {
+ qWarning() << "class" << meta->className() << "contains overloaded methods which is currently not supported!";
+#if QT_VERSION >= 0x050000
+ qWarning() << " - " << _meta->method(i).methodSignature() << "conflicts with" << _meta->method(_methodIds[method]).methodSignature();
+#else
+ qWarning() << " - " << _meta->method(i).signature() << "conflicts with" << _meta->method(_methodIds[method]).signature();
+#endif
+ }
+ continue;
+ }
+ _methodIds[method] = i;
+ }
+}
+
+
+const SignalProxy::ExtendedMetaObject::MethodDescriptor &SignalProxy::ExtendedMetaObject::methodDescriptor(int methodId)
+{
+ if (!_methods.contains(methodId)) {
+ _methods[methodId] = MethodDescriptor(_meta->method(methodId));
+ }
+ return _methods[methodId];
+}
+
+
+const QHash<int, int> &SignalProxy::ExtendedMetaObject::receiveMap()
+{
+ if (_receiveMap.isEmpty()) {
+ QHash<int, int> receiveMap;
+
+ QMetaMethod requestSlot;
+ QByteArray returnTypeName;
+ QByteArray signature;
+ QByteArray methodName;
+ QByteArray params;
+ int paramsPos;
+ int receiverId;
+ const int methodCount = _meta->methodCount();
+ for (int i = 0; i < methodCount; i++) {
+ requestSlot = _meta->method(i);
+ if (requestSlot.methodType() != QMetaMethod::Slot)
+ continue;
+
+ returnTypeName = requestSlot.typeName();
+ if (QMetaType::Void == (QMetaType::Type)returnType(i))
+ continue;
+
+#if QT_VERSION >= 0x050000
+ signature = requestSlot.methodSignature();
+#else
+ signature = QByteArray(requestSlot.signature());
+#endif
+ if (!signature.startsWith("request"))
+ continue;
+
+ paramsPos = signature.indexOf('(');
+ if (paramsPos == -1)
+ continue;
+
+ methodName = signature.left(paramsPos);
+ params = signature.mid(paramsPos);
+
+ methodName = methodName.replace("request", "receive");
+ params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
+
+ signature = QMetaObject::normalizedSignature(methodName + params);
+ receiverId = _meta->indexOfSlot(signature);
+
+ if (receiverId == -1) {
+ signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
+ receiverId = _meta->indexOfSlot(signature);
+ }
+
+ if (receiverId != -1) {
+ receiveMap[i] = receiverId;
+ }
+ }
+ _receiveMap = receiveMap;
+ }
+ return _receiveMap;
+}
+
+
+QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method)
+{
+#if QT_VERSION >= 0x050000
+ QByteArray sig(method.methodSignature());
+#else
+ QByteArray sig(method.signature());
+#endif
+ return sig.left(sig.indexOf("("));
+}
+
+
+QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method)
+{
+#if QT_VERSION >= 0x050000
+ QString methodname = QString(method.methodSignature()).section("(", 0, 0);
+#else
+ QString methodname = QString(method.signature()).section("(", 0, 0);
+#endif
+
+ // determine where we have to chop:
+ int upperCharPos;
+ if (method.methodType() == QMetaMethod::Slot) {
+ // we take evertyhing from the first uppercase char if it's slot
+ upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
+ if (upperCharPos == -1)
+ return QString();
+ methodname = methodname.mid(upperCharPos);
+ }
+ else {
+ // and if it's a signal we discard everything from the last uppercase char
+ upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
+ if (upperCharPos == -1)
+ return QString();
+ methodname = methodname.left(upperCharPos);
+ }
+
+ methodname[0] = methodname[0].toUpper();
+
+ return methodname;
+}
+
+
+SignalProxy::ExtendedMetaObject::MethodDescriptor::MethodDescriptor(const QMetaMethod &method)
+ : _methodName(SignalProxy::ExtendedMetaObject::methodName(method)),
+ _returnType(QMetaType::type(method.typeName()))
+{
+ // determine argTypes
+ QList<QByteArray> paramTypes = method.parameterTypes();
+ QList<int> argTypes;
+ for (int i = 0; i < paramTypes.count(); i++) {
+ argTypes.append(QMetaType::type(paramTypes[i]));
+ }
+ _argTypes = argTypes;
+
+ // determine minArgCount
+#if QT_VERSION >= 0x050000
+ QString signature(method.methodSignature());
+#else
+ QString signature(method.signature());
+#endif
+ _minArgCount = method.parameterTypes().count() - signature.count("=");
+
+ _receiverMode = (_methodName.startsWith("request"))
+ ? SignalProxy::Server
+ : SignalProxy::Client;
}