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signalproxy.cpp
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20 
21 #include <QCoreApplication>
22 #include <QHostAddress>
23 #include <QMetaMethod>
24 #include <QMetaProperty>
25 #include <QThread>
26 
27 #ifdef HAVE_SSL
28  #include <QSslSocket>
29 #endif
30 
31 #include "signalproxy.h"
32 
33 #include "peer.h"
34 #include "protocol.h"
35 #include "syncableobject.h"
36 #include "util.h"
37 #include "types.h"
38 
39 using namespace Protocol;
40 
41 class RemovePeerEvent : public QEvent
42 {
43 public:
44  RemovePeerEvent(Peer *peer) : QEvent(QEvent::Type(SignalProxy::RemovePeerEvent)), peer(peer) {}
46 };
47 
48 
49 // ==================================================
50 // SignalRelay
51 // ==================================================
52 class SignalProxy::SignalRelay : public QObject
53 {
54 /* Q_OBJECT is not necessary or even allowed, because we implement
55  qt_metacall ourselves (and don't use any other features of the meta
56  object system)
57 */
58 public:
59  SignalRelay(SignalProxy *parent) : QObject(parent), _proxy(parent) {}
60  inline SignalProxy *proxy() const { return _proxy; }
61 
62  int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
63 
64  void attachSignal(QObject *sender, int signalId, const QByteArray &funcName);
65  void detachSignal(QObject *sender, int signalId = -1);
66 
67 private:
68  struct Signal {
69  QObject *sender;
70  int signalId;
71  QByteArray signature;
72  Signal(QObject *sender, int sigId, const QByteArray &signature) : sender(sender), signalId(sigId), signature(signature) {}
73  Signal() : sender(0), signalId(-1) {}
74  };
75 
77  QHash<int, Signal> _slots;
78 };
79 
80 
81 void SignalProxy::SignalRelay::attachSignal(QObject *sender, int signalId, const QByteArray &funcName)
82 {
83  // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
84  // all connected methodIds are offset by the standard methodCount of QObject
85  int slotId;
86  for (int i = 0;; i++) {
87  if (!_slots.contains(i)) {
88  slotId = i;
89  break;
90  }
91  }
92 
93  QByteArray fn;
94  if (!funcName.isEmpty()) {
95  fn = QMetaObject::normalizedSignature(funcName);
96  }
97  else {
98  fn = SIGNAL(fakeMethodSignature());
99 #if QT_VERSION >= 0x050000
100  fn = fn.replace("fakeMethodSignature()", sender->metaObject()->method(signalId).methodSignature());
101 #else
102  fn = fn.replace("fakeMethodSignature()", sender->metaObject()->method(signalId).signature());
103 #endif
104  }
105 
106  _slots[slotId] = Signal(sender, signalId, fn);
107 
108  QMetaObject::connect(sender, signalId, this, QObject::staticMetaObject.methodCount() + slotId);
109 }
110 
111 
112 void SignalProxy::SignalRelay::detachSignal(QObject *sender, int signalId)
113 {
114  QHash<int, Signal>::iterator slotIter = _slots.begin();
115  while (slotIter != _slots.end()) {
116  if (slotIter->sender == sender && (signalId == -1 || slotIter->signalId == signalId)) {
117  slotIter = _slots.erase(slotIter);
118  if (signalId != -1)
119  break;
120  }
121  else {
122  slotIter++;
123  }
124  }
125 }
126 
127 
128 int SignalProxy::SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
129 {
130  _id = QObject::qt_metacall(_c, _id, _a);
131  if (_id < 0)
132  return _id;
133 
134  if (_c == QMetaObject::InvokeMetaMethod) {
135  if (_slots.contains(_id)) {
136  QObject *caller = sender();
137 
138  SignalProxy::ExtendedMetaObject *eMeta = proxy()->extendedMetaObject(caller->metaObject());
139  Q_ASSERT(eMeta);
140 
141  const Signal &signal = _slots[_id];
142 
143  QVariantList params;
144 
145  const QList<int> &argTypes = eMeta->argTypes(signal.signalId);
146  for (int i = 0; i < argTypes.size(); i++) {
147  if (argTypes[i] == 0) {
148 #if QT_VERSION >= 0x050000
149  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).methodSignature().constData());
150 #else
151  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());
152 #endif
153  qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
154  return _id;
155  }
156  params << QVariant(argTypes[i], _a[i+1]);
157  }
158 
159  if (argTypes.size() >= 1 && argTypes[0] == qMetaTypeId<PeerPtr>() && proxy()->proxyMode() == SignalProxy::Server) {
160  Peer *peer = params[0].value<PeerPtr>();
161  proxy()->dispatch(peer, RpcCall(signal.signature, params));
162  } else
163  proxy()->dispatch(RpcCall(signal.signature, params));
164  }
165  _id -= _slots.count();
166  }
167  return _id;
168 }
169 
170 
171 // ==================================================
172 // SignalProxy
173 // ==================================================
174 SignalProxy::SignalProxy(QObject *parent)
175  : QObject(parent)
176 {
178  init();
179 }
180 
181 
182 SignalProxy::SignalProxy(ProxyMode mode, QObject *parent)
183  : QObject(parent)
184 {
185  setProxyMode(mode);
186  init();
187 }
188 
189 
191 {
192  QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
193  while (classIter != _syncSlave.end()) {
194  ObjectId::iterator objIter = classIter->begin();
195  while (objIter != classIter->end()) {
196  SyncableObject *obj = objIter.value();
197  objIter = classIter->erase(objIter);
198  obj->stopSynchronize(this);
199  }
200  classIter++;
201  }
202  _syncSlave.clear();
203 
204  removeAllPeers();
205 }
206 
207 
209 {
210  if (_peers.count()) {
211  qWarning() << Q_FUNC_INFO << "Cannot change proxy mode while connected";
212  return;
213  }
214 
215  _proxyMode = mode;
216  if (mode == Server)
217  initServer();
218  else
219  initClient();
220 }
221 
222 
224 {
225  _heartBeatInterval = 0;
226  _maxHeartBeatCount = 0;
227  _signalRelay = new SignalRelay(this);
230  _secure = false;
232 }
233 
234 
236 {
237 }
238 
239 
241 {
242  attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray,QString,QString)));
243 }
244 
245 
247 {
248  if (_heartBeatInterval != secs) {
249  _heartBeatInterval = secs;
250  emit heartBeatIntervalChanged(secs);
251  }
252 }
253 
254 
256 {
257  if (_maxHeartBeatCount != max) {
258  _maxHeartBeatCount = max;
259  emit maxHeartBeatCountChanged(max);
260  }
261 }
262 
263 
265 {
266  if (!peer)
267  return false;
268 
269  if (_peers.contains(peer))
270  return true;
271 
272  if (!peer->isOpen()) {
273  qWarning("SignalProxy: peer needs to be open!");
274  return false;
275  }
276 
277  if (proxyMode() == Client) {
278  if (!_peers.isEmpty()) {
279  qWarning("SignalProxy: only one peer allowed in client mode!");
280  return false;
281  }
282  connect(peer, SIGNAL(lagUpdated(int)), SIGNAL(lagUpdated(int)));
283  }
284 
285  connect(peer, SIGNAL(disconnected()), SLOT(removePeerBySender()));
286  connect(peer, SIGNAL(secureStateChanged(bool)), SLOT(updateSecureState()));
287 
288  if (!peer->parent())
289  peer->setParent(this);
290 
291  _peers.insert(peer);
292 
293  peer->setSignalProxy(this);
294 
295  if (_peers.count() == 1)
296  emit connected();
297 
299  return true;
300 }
301 
302 
304 {
305  Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
306  // wee need to copy that list since we modify it in the loop
307  QSet<Peer *> peers = _peers;
308  foreach(Peer *peer, peers) {
309  removePeer(peer);
310  }
311 }
312 
313 
315 {
316  if (!peer) {
317  qWarning() << Q_FUNC_INFO << "Trying to remove a null peer!";
318  return;
319  }
320 
321  if (_peers.isEmpty()) {
322  qWarning() << "SignalProxy::removePeer(): No peers in use!";
323  return;
324  }
325 
326  if (!_peers.contains(peer)) {
327  qWarning() << "SignalProxy: unknown Peer" << peer;
328  return;
329  }
330 
331  disconnect(peer, 0, this, 0);
332  peer->setSignalProxy(0);
333 
334  _peers.remove(peer);
335  emit peerRemoved(peer);
336 
337  if (peer->parent() == this)
338  peer->deleteLater();
339 
341 
342  if (_peers.isEmpty())
343  emit disconnected();
344 }
345 
346 
348 {
349  removePeer(qobject_cast<Peer *>(sender()));
350 }
351 
352 
353 void SignalProxy::renameObject(const SyncableObject *obj, const QString &newname, const QString &oldname)
354 {
355  if (proxyMode() == Client)
356  return;
357 
358  const QMetaObject *meta = obj->syncMetaObject();
359  const QByteArray className(meta->className());
360  objectRenamed(className, newname, oldname);
361 
362  dispatch(RpcCall("__objectRenamed__", QVariantList() << className << newname << oldname));
363 }
364 
365 
366 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname)
367 {
368  if (_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
369  SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
370  requestInit(obj);
371  }
372 }
373 
374 
375 const QMetaObject *SignalProxy::metaObject(const QObject *obj)
376 {
377  if (const SyncableObject *syncObject = qobject_cast<const SyncableObject *>(obj))
378  return syncObject->syncMetaObject();
379  else
380  return obj->metaObject();
381 }
382 
383 
385 {
386  if (_extendedMetaObjects.contains(meta))
387  return _extendedMetaObjects[meta];
388  else
389  return 0;
390 }
391 
392 
393 SignalProxy::ExtendedMetaObject *SignalProxy::createExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
394 {
395  if (!_extendedMetaObjects.contains(meta)) {
396  _extendedMetaObjects[meta] = new ExtendedMetaObject(meta, checkConflicts);
397  }
398  return _extendedMetaObjects[meta];
399 }
400 
401 
402 bool SignalProxy::attachSignal(QObject *sender, const char *signal, const QByteArray &sigName)
403 {
404  const QMetaObject *meta = sender->metaObject();
405  QByteArray sig(meta->normalizedSignature(signal).mid(1));
406  int methodId = meta->indexOfMethod(sig.constData());
407  if (methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
408  qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
409  return false;
410  }
411 
413  _signalRelay->attachSignal(sender, methodId, sigName);
414 
415  disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
416  connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
417  return true;
418 }
419 
420 
421 bool SignalProxy::attachSlot(const QByteArray &sigName, QObject *recv, const char *slot)
422 {
423  const QMetaObject *meta = recv->metaObject();
424  int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
425  if (methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
426  qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
427  return false;
428  }
429 
431 
432  QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
433  _attachedSlots.insert(funcName, qMakePair(recv, methodId));
434 
435  disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
436  connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
437  return true;
438 }
439 
440 
442 {
443  createExtendedMetaObject(obj, true);
444 
445  // attaching as slave to receive sync Calls
446  QByteArray className(obj->syncMetaObject()->className());
447  _syncSlave[className][obj->objectName()] = obj;
448 
449  if (proxyMode() == Server) {
450  obj->setInitialized();
451  emit objectInitialized(obj);
452  }
453  else {
454  if (obj->isInitialized())
455  emit objectInitialized(obj);
456  else
457  requestInit(obj);
458  }
459 
460  obj->synchronize(this);
461 }
462 
463 
464 void SignalProxy::detachObject(QObject *obj)
465 {
466  detachSignals(obj);
467  detachSlots(obj);
468 }
469 
470 
471 void SignalProxy::detachSignals(QObject *sender)
472 {
473  _signalRelay->detachSignal(sender);
474 }
475 
476 
477 void SignalProxy::detachSlots(QObject *receiver)
478 {
479  SlotHash::iterator slotIter = _attachedSlots.begin();
480  while (slotIter != _attachedSlots.end()) {
481  if (slotIter.value().first == receiver) {
482  slotIter = _attachedSlots.erase(slotIter);
483  }
484  else
485  slotIter++;
486  }
487 }
488 
489 
491 {
492  // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
493  // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
494  QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
495  while (classIter != _syncSlave.end()) {
496  if (classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
497  classIter->remove(obj->objectName());
498  break;
499  }
500  classIter++;
501  }
502  obj->stopSynchronize(this);
503 }
504 
505 
506 template<class T>
507 void SignalProxy::dispatch(const T &protoMessage)
508 {
509  foreach (Peer *peer, _peers) {
510  if (peer->isOpen())
511  peer->dispatch(protoMessage);
512  else
513  QCoreApplication::postEvent(this, new ::RemovePeerEvent(peer));
514  }
515 }
516 
517 
518 template<class T>
519 void SignalProxy::dispatch(Peer *peer, const T &protoMessage)
520 {
521  if (peer && peer->isOpen())
522  peer->dispatch(protoMessage);
523  else
524  QCoreApplication::postEvent(this, new ::RemovePeerEvent(peer));
525 }
526 
527 
528 void SignalProxy::handle(Peer *peer, const SyncMessage &syncMessage)
529 {
530  if (!_syncSlave.contains(syncMessage.className) || !_syncSlave[syncMessage.className].contains(syncMessage.objectName)) {
531  qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(syncMessage.className, syncMessage.slotName, syncMessage.objectName)
532  << syncMessage.params;
533  return;
534  }
535 
536  SyncableObject *receiver = _syncSlave[syncMessage.className][syncMessage.objectName];
537  ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
538  if (!eMeta->slotMap().contains(syncMessage.slotName)) {
539  qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(syncMessage.className, syncMessage.slotName, syncMessage.objectName)
540  << syncMessage.params;
541  return;
542  }
543 
544  int slotId = eMeta->slotMap()[syncMessage.slotName];
545  if (proxyMode() != eMeta->receiverMode(slotId)) {
546  qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed. Wrong ProxyMode!", eMeta->methodName(slotId).constData());
547  return;
548  }
549 
550  // We can no longer construct a QVariant from QMetaType::Void
551  QVariant returnValue;
552  int returnType = eMeta->returnType(slotId);
553  if (returnType != QMetaType::Void)
554  returnValue = QVariant(static_cast<QVariant::Type>(returnType));
555 
556  if (!invokeSlot(receiver, slotId, syncMessage.params, returnValue, peer)) {
557  qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
558  return;
559  }
560 
561  if (returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
562  int receiverId = eMeta->receiveMap()[slotId];
563  QVariantList returnParams;
564  if (eMeta->argTypes(receiverId).count() > 1)
565  returnParams << syncMessage.params;
566  returnParams << returnValue;
567  peer->dispatch(SyncMessage(syncMessage.className, syncMessage.objectName, eMeta->methodName(receiverId), returnParams));
568  }
569 
570  // send emit update signal
571  invokeSlot(receiver, eMeta->updatedRemotelyId());
572 }
573 
574 
575 void SignalProxy::handle(Peer *peer, const InitRequest &initRequest)
576 {
577  if (!_syncSlave.contains(initRequest.className)) {
578  qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
579  << initRequest.className;
580  return;
581  }
582 
583  if (!_syncSlave[initRequest.className].contains(initRequest.objectName)) {
584  qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
585  << initRequest.className << initRequest.objectName;
586  return;
587  }
588 
589  SyncableObject *obj = _syncSlave[initRequest.className][initRequest.objectName];
590  peer->dispatch(InitData(initRequest.className, initRequest.objectName, initData(obj)));
591 }
592 
593 
594 void SignalProxy::handle(Peer *peer, const InitData &initData)
595 {
596  Q_UNUSED(peer)
597 
598  if (!_syncSlave.contains(initData.className)) {
599  qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
600  << initData.className;
601  return;
602  }
603 
604  if (!_syncSlave[initData.className].contains(initData.objectName)) {
605  qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
606  << initData.className << initData.objectName;
607  return;
608  }
609 
610  SyncableObject *obj = _syncSlave[initData.className][initData.objectName];
611  setInitData(obj, initData.initData);
612 }
613 
614 
615 void SignalProxy::handle(Peer *peer, const RpcCall &rpcCall)
616 {
617  QObject *receiver;
618  int methodId;
619  SlotHash::const_iterator slot = _attachedSlots.constFind(rpcCall.slotName);
620  while (slot != _attachedSlots.constEnd() && slot.key() == rpcCall.slotName) {
621  receiver = (*slot).first;
622  methodId = (*slot).second;
623  if (!invokeSlot(receiver, methodId, rpcCall.params, peer)) {
624  ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
625  qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", eMeta->methodName(methodId).constData());
626  }
627  ++slot;
628  }
629 }
630 
631 
632 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList &params, QVariant &returnValue, Peer *peer)
633 {
634  ExtendedMetaObject *eMeta = extendedMetaObject(receiver);
635  const QList<int> args = eMeta->argTypes(methodId);
636  const int numArgs = params.count() < args.count()
637  ? params.count()
638  : args.count();
639 
640  if (eMeta->minArgCount(methodId) > params.count()) {
641  qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
642  return false;
643  }
644 
645  void *_a[] = { 0, // return type...
646  0, 0, 0, 0, 0, // and 10 args - that's the max size qt can handle with signals and slots
647  0, 0, 0, 0, 0 };
648 
649  // check for argument compatibility and build params array
650  for (int i = 0; i < numArgs; i++) {
651  if (!params[i].isValid()) {
652 #if QT_VERSION >= 0x050000
653  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());
654 #else
655  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());
656 #endif
657  qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
658  return false;
659  }
660  if (args[i] != QMetaType::type(params[i].typeName())) {
661  qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
662  return false;
663  }
664  // if first arg is a PeerPtr, replace it by the address of the peer originally receiving the RpcCall
665  if (peer && i == 0 && args[0] == qMetaTypeId<PeerPtr>()) {
666  QVariant v = QVariant::fromValue<PeerPtr>(peer);
667  _a[1] = const_cast<void*>(v.constData());
668  } else
669  _a[i+1] = const_cast<void *>(params[i].constData());
670  }
671 
672  if (returnValue.type() != QVariant::Invalid)
673  _a[0] = const_cast<void *>(returnValue.constData());
674 
675  Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
676  ? Qt::DirectConnection
677  : Qt::QueuedConnection;
678 
679  if (type == Qt::DirectConnection) {
680  return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
681  }
682  else {
683  qWarning() << "Queued Connections are not implemented yet";
684  // note to self: qmetaobject.cpp:990 ff
685  return false;
686  }
687 }
688 
689 
690 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList &params, Peer *peer)
691 {
692  QVariant ret;
693  return invokeSlot(receiver, methodId, params, ret, peer);
694 }
695 
696 
698 {
699  if (proxyMode() == Server || obj->isInitialized())
700  return;
701 
702  dispatch(InitRequest(obj->syncMetaObject()->className(), obj->objectName()));
703 }
704 
705 
706 QVariantMap SignalProxy::initData(SyncableObject *obj) const
707 {
708  return obj->toVariantMap();
709 }
710 
711 
712 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties)
713 {
714  if (obj->isInitialized())
715  return;
716  obj->fromVariantMap(properties);
717  obj->setInitialized();
718  emit objectInitialized(obj);
719  invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
720 }
721 
722 
723 void SignalProxy::customEvent(QEvent *event)
724 {
725  switch ((int)event->type()) {
726  case RemovePeerEvent: {
727  ::RemovePeerEvent *e = static_cast< ::RemovePeerEvent *>(event);
728  removePeer(e->peer);
729  event->accept();
730  break;
731  }
732 
733  default:
734  qWarning() << Q_FUNC_INFO << "Received unknown custom event:" << event->type();
735  return;
736  }
737 }
738 
739 
740 void SignalProxy::sync_call__(const SyncableObject *obj, SignalProxy::ProxyMode modeType, const char *funcname, va_list ap)
741 {
742  // qDebug() << obj << modeType << "(" << _proxyMode << ")" << funcname;
743  if (modeType != _proxyMode)
744  return;
745 
747 
748  QVariantList params;
749 
750  const QList<int> &argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
751 
752  for (int i = 0; i < argTypes.size(); i++) {
753  if (argTypes[i] == 0) {
754  qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
755  qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
756  return;
757  }
758  params << QVariant(argTypes[i], va_arg(ap, void *));
759  }
760 
761  if (argTypes.size() >= 1 && argTypes[0] == qMetaTypeId<PeerPtr>() && proxyMode() == SignalProxy::Server) {
762  Peer *peer = params[0].value<PeerPtr>();
763  dispatch(peer, SyncMessage(eMeta->metaObject()->className(), obj->objectName(), QByteArray(funcname), params));
764  } else
765  dispatch(SyncMessage(eMeta->metaObject()->className(), obj->objectName(), QByteArray(funcname), params));
766 }
767 
768 
769 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason)
770 {
771  if (!reason.isEmpty())
772  qWarning() << qPrintable(reason);
773  QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
774  if (sock)
775  qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
776  dev->close();
777 }
778 
779 
781 {
782  QString mode;
783  if (proxyMode() == Server)
784  mode = "Server";
785  else
786  mode = "Client";
787 
788  int slaveCount = 0;
789  foreach(ObjectId oid, _syncSlave.values())
790  slaveCount += oid.count();
791 
792  qDebug() << this;
793  qDebug() << " Proxy Mode:" << mode;
794  qDebug() << " attached Slots:" << _attachedSlots.count();
795  qDebug() << " number of synced Slaves:" << slaveCount;
796  qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
797 }
798 
799 
801 {
802  bool wasSecure = _secure;
803 
804  _secure = !_peers.isEmpty();
805  foreach (const Peer *peer, _peers) {
806  _secure &= peer->isSecure();
807  }
808 
809  if (wasSecure != _secure)
811 }
812 
813 
814 // ==================================================
815 // ExtendedMetaObject
816 // ==================================================
817 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject *meta, bool checkConflicts)
818  : _meta(meta),
819  _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
820 {
821  for (int i = 0; i < _meta->methodCount(); i++) {
822  if (_meta->method(i).methodType() != QMetaMethod::Slot)
823  continue;
824 
825 #if QT_VERSION >= 0x050000
826  if (_meta->method(i).methodSignature().contains('*'))
827 #else
828  if (QByteArray(_meta->method(i).signature()).contains('*'))
829 #endif
830  continue; // skip methods with ptr params
831 
832  QByteArray method = methodName(_meta->method(i));
833  if (method.startsWith("init"))
834  continue; // skip initializers
835 
836  if (_methodIds.contains(method)) {
837  /* funny... moc creates for methods containing default parameters multiple metaMethod with separate methodIds.
838  we don't care... we just need the full fledged version
839  */
840  const QMetaMethod &current = _meta->method(_methodIds[method]);
841  const QMetaMethod &candidate = _meta->method(i);
842  if (current.parameterTypes().count() > candidate.parameterTypes().count()) {
843  int minCount = candidate.parameterTypes().count();
844  QList<QByteArray> commonParams = current.parameterTypes().mid(0, minCount);
845  if (commonParams == candidate.parameterTypes())
846  continue; // we already got the full featured version
847  }
848  else {
849  int minCount = current.parameterTypes().count();
850  QList<QByteArray> commonParams = candidate.parameterTypes().mid(0, minCount);
851  if (commonParams == current.parameterTypes()) {
852  _methodIds[method] = i; // use the new one
853  continue;
854  }
855  }
856  if (checkConflicts) {
857  qWarning() << "class" << meta->className() << "contains overloaded methods which is currently not supported!";
858 #if QT_VERSION >= 0x050000
859  qWarning() << " - " << _meta->method(i).methodSignature() << "conflicts with" << _meta->method(_methodIds[method]).methodSignature();
860 #else
861  qWarning() << " - " << _meta->method(i).signature() << "conflicts with" << _meta->method(_methodIds[method]).signature();
862 #endif
863  }
864  continue;
865  }
866  _methodIds[method] = i;
867  }
868 }
869 
870 
872 {
873  if (!_methods.contains(methodId)) {
874  _methods[methodId] = MethodDescriptor(_meta->method(methodId));
875  }
876  return _methods[methodId];
877 }
878 
879 
881 {
882  if (_receiveMap.isEmpty()) {
883  QHash<int, int> receiveMap;
884 
885  QMetaMethod requestSlot;
886  QByteArray returnTypeName;
887  QByteArray signature;
888  QByteArray methodName;
889  QByteArray params;
890  int paramsPos;
891  int receiverId;
892  const int methodCount = _meta->methodCount();
893  for (int i = 0; i < methodCount; i++) {
894  requestSlot = _meta->method(i);
895  if (requestSlot.methodType() != QMetaMethod::Slot)
896  continue;
897 
898  returnTypeName = requestSlot.typeName();
899  if (QMetaType::Void == (QMetaType::Type)returnType(i))
900  continue;
901 
902 #if QT_VERSION >= 0x050000
903  signature = requestSlot.methodSignature();
904 #else
905  signature = QByteArray(requestSlot.signature());
906 #endif
907  if (!signature.startsWith("request"))
908  continue;
909 
910  paramsPos = signature.indexOf('(');
911  if (paramsPos == -1)
912  continue;
913 
914  methodName = signature.left(paramsPos);
915  params = signature.mid(paramsPos);
916 
917  methodName = methodName.replace("request", "receive");
918  params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
919 
920  signature = QMetaObject::normalizedSignature(methodName + params);
921  receiverId = _meta->indexOfSlot(signature);
922 
923  if (receiverId == -1) {
924  signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
925  receiverId = _meta->indexOfSlot(signature);
926  }
927 
928  if (receiverId != -1) {
929  receiveMap[i] = receiverId;
930  }
931  }
932  _receiveMap = receiveMap;
933  }
934  return _receiveMap;
935 }
936 
937 
938 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod &method)
939 {
940 #if QT_VERSION >= 0x050000
941  QByteArray sig(method.methodSignature());
942 #else
943  QByteArray sig(method.signature());
944 #endif
945  return sig.left(sig.indexOf("("));
946 }
947 
948 
949 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod &method)
950 {
951 #if QT_VERSION >= 0x050000
952  QString methodname = QString(method.methodSignature()).section("(", 0, 0);
953 #else
954  QString methodname = QString(method.signature()).section("(", 0, 0);
955 #endif
956 
957  // determine where we have to chop:
958  int upperCharPos;
959  if (method.methodType() == QMetaMethod::Slot) {
960  // we take evertyhing from the first uppercase char if it's slot
961  upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
962  if (upperCharPos == -1)
963  return QString();
964  methodname = methodname.mid(upperCharPos);
965  }
966  else {
967  // and if it's a signal we discard everything from the last uppercase char
968  upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
969  if (upperCharPos == -1)
970  return QString();
971  methodname = methodname.left(upperCharPos);
972  }
973 
974  methodname[0] = methodname[0].toUpper();
975 
976  return methodname;
977 }
978 
979 
981  : _methodName(SignalProxy::ExtendedMetaObject::methodName(method)),
982  _returnType(QMetaType::type(method.typeName()))
983 {
984  // determine argTypes
985  QList<QByteArray> paramTypes = method.parameterTypes();
986  QList<int> argTypes;
987  for (int i = 0; i < paramTypes.count(); i++) {
988  argTypes.append(QMetaType::type(paramTypes[i]));
989  }
991 
992  // determine minArgCount
993 #if QT_VERSION >= 0x050000
994  QString signature(method.methodSignature());
995 #else
996  QString signature(method.signature());
997 #endif
998  _minArgCount = method.parameterTypes().count() - signature.count("=");
999 
1000  _receiverMode = (_methodName.startsWith("request"))
1003 }