src/client/client.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2015 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   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.                                           *
   9  *                                                                         *
  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.                          *
  14  *                                                                         *
  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  ***************************************************************************/
  20
  21 #include "client.h"
  22
  23 #include "abstractmessageprocessor.h"
  24 #include "abstractui.h"
  25 #include "bufferinfo.h"
  26 #include "buffermodel.h"
  27 #include "buffersettings.h"
  28 #include "buffersyncer.h"
  29 #include "bufferviewconfig.h"
  30 #include "bufferviewoverlay.h"
  31 #include "clientaliasmanager.h"
  32 #include "clientbacklogmanager.h"
  33 #include "clientbufferviewmanager.h"
  34 #include "clientirclisthelper.h"
  35 #include "clientidentity.h"
  36 #include "clientignorelistmanager.h"
  37 #include "clienttransfermanager.h"
  38 #include "clientuserinputhandler.h"
  39 #include "coreaccountmodel.h"
  40 #include "coreconnection.h"
  41 #include "ircchannel.h"
  42 #include "ircuser.h"
  43 #include "message.h"
  44 #include "messagemodel.h"
  45 #include "network.h"
  46 #include "networkconfig.h"
  47 #include "networkmodel.h"
  48 #include "quassel.h"
  49 #include "signalproxy.h"
  50 #include "util.h"
  51 #include "clientauthhandler.h"
  52
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55
  56 QPointer<Client> Client::instanceptr = 0;
  57 Quassel::Features Client::_coreFeatures = 0;
  58
  59 /*** Initialization/destruction ***/
  60
  61 bool Client::instanceExists()
  62 {
  63     return instanceptr;
  64 }
  65
  66
  67 Client *Client::instance()
  68 {
  69     if (!instanceptr)
  70         instanceptr = new Client();
  71     return instanceptr;
  72 }
  73
  74
  75 void Client::destroy()
  76 {
  77     if (instanceptr) {
  78         delete instanceptr->mainUi();
  79         instanceptr->deleteLater();
  80         instanceptr = 0;
  81     }
  82 }
  83
  84
  85 void Client::init(AbstractUi *ui)
  86 {
  87     instance()->_mainUi = ui;
  88     instance()->init();
  89 }
  90
  91
  92 Client::Client(QObject *parent)
  93     : QObject(parent),
  94     _signalProxy(new SignalProxy(SignalProxy::Client, this)),
  95     _mainUi(0),
  96     _networkModel(0),
  97     _bufferModel(0),
  98     _bufferSyncer(0),
  99     _aliasManager(0),
 100     _backlogManager(new ClientBacklogManager(this)),
 101     _bufferViewManager(0),
 102     _bufferViewOverlay(new BufferViewOverlay(this)),
 103     _ircListHelper(new ClientIrcListHelper(this)),
 104     _inputHandler(0),
 105     _networkConfig(0),
 106     _ignoreListManager(0),
 107     _transferManager(0),
 108     _messageModel(0),
 109     _messageProcessor(0),
 110     _coreAccountModel(new CoreAccountModel(this)),
 111     _coreConnection(new CoreConnection(this)),
 112     _connected(false),
 113     _debugLog(&_debugLogBuffer)
 114 {
 115     _signalProxy->synchronize(_ircListHelper);
 116 }
 117
 118
 119 Client::~Client()
 120 {
 121     disconnectFromCore();
 122 }
 123
 124
 125 void Client::init()
 126 {
 127     _networkModel = new NetworkModel(this);
 128
 129     connect(this, SIGNAL(networkRemoved(NetworkId)),
 130         _networkModel, SLOT(networkRemoved(NetworkId)));
 131
 132     _bufferModel = new BufferModel(_networkModel);
 133     _messageModel = mainUi()->createMessageModel(this);
 134     _messageProcessor = mainUi()->createMessageProcessor(this);
 135     _inputHandler = new ClientUserInputHandler(this);
 136
 137     SignalProxy *p = signalProxy();
 138
 139     p->attachSlot(SIGNAL(displayMsg(const Message &)), this, SLOT(recvMessage(const Message &)));
 140     p->attachSlot(SIGNAL(displayStatusMsg(QString, QString)), this, SLOT(recvStatusMsg(QString, QString)));
 141
 142     p->attachSlot(SIGNAL(bufferInfoUpdated(BufferInfo)), _networkModel, SLOT(bufferUpdated(BufferInfo)));
 143     p->attachSignal(inputHandler(), SIGNAL(sendInput(BufferInfo, QString)));
 144     p->attachSignal(this, SIGNAL(requestNetworkStates()));
 145
 146     p->attachSignal(this, SIGNAL(requestCreateIdentity(const Identity &, const QVariantMap &)), SIGNAL(createIdentity(const Identity &, const QVariantMap &)));
 147     p->attachSignal(this, SIGNAL(requestRemoveIdentity(IdentityId)), SIGNAL(removeIdentity(IdentityId)));
 148     p->attachSlot(SIGNAL(identityCreated(const Identity &)), this, SLOT(coreIdentityCreated(const Identity &)));
 149     p->attachSlot(SIGNAL(identityRemoved(IdentityId)), this, SLOT(coreIdentityRemoved(IdentityId)));
 150
 151     p->attachSignal(this, SIGNAL(requestCreateNetwork(const NetworkInfo &, const QStringList &)), SIGNAL(createNetwork(const NetworkInfo &, const QStringList &)));
 152     p->attachSignal(this, SIGNAL(requestRemoveNetwork(NetworkId)), SIGNAL(removeNetwork(NetworkId)));
 153     p->attachSlot(SIGNAL(networkCreated(NetworkId)), this, SLOT(coreNetworkCreated(NetworkId)));
 154     p->attachSlot(SIGNAL(networkRemoved(NetworkId)), this, SLOT(coreNetworkRemoved(NetworkId)));
 155
 156     p->attachSignal(this, SIGNAL(clientChangePassword(QString)));
 157
 158     //connect(mainUi(), SIGNAL(connectToCore(const QVariantMap &)), this, SLOT(connectToCore(const QVariantMap &)));
 159     connect(mainUi(), SIGNAL(disconnectFromCore()), this, SLOT(disconnectFromCore()));
 160     connect(this, SIGNAL(connected()), mainUi(), SLOT(connectedToCore()));
 161     connect(this, SIGNAL(disconnected()), mainUi(), SLOT(disconnectedFromCore()));
 162
 163     // attach backlog manager
 164     p->synchronize(backlogManager());
 165     connect(backlogManager(), SIGNAL(messagesReceived(BufferId, int)), _messageModel, SLOT(messagesReceived(BufferId, int)));
 166
 167     coreAccountModel()->load();
 168
 169     connect(coreConnection(), SIGNAL(stateChanged(CoreConnection::ConnectionState)), SLOT(connectionStateChanged(CoreConnection::ConnectionState)));
 170     coreConnection()->init();
 171 }
 172
 173
 174 /*** public static methods ***/
 175
 176 AbstractUi *Client::mainUi()
 177 {
 178     return instance()->_mainUi;
 179 }
 180
 181
 182 void Client::setCoreFeatures(Quassel::Features features)
 183 {
 184     _coreFeatures = features;
 185 }
 186
 187
 188 bool Client::isConnected()
 189 {
 190     return instance()->_connected;
 191 }
 192
 193
 194 bool Client::internalCore()
 195 {
 196     return currentCoreAccount().isInternal();
 197 }
 198
 199
 200 /*** Network handling ***/
 201
 202 QList<NetworkId> Client::networkIds()
 203 {
 204     return instance()->_networks.keys();
 205 }
 206
 207
 208 const Network *Client::network(NetworkId networkid)
 209 {
 210     if (instance()->_networks.contains(networkid)) return instance()->_networks[networkid];
 211     else return 0;
 212 }
 213
 214
 215 void Client::createNetwork(const NetworkInfo &info, const QStringList &persistentChannels)
 216 {
 217     emit instance()->requestCreateNetwork(info, persistentChannels);
 218 }
 219
 220
 221 void Client::removeNetwork(NetworkId id)
 222 {
 223     emit instance()->requestRemoveNetwork(id);
 224 }
 225
 226
 227 void Client::updateNetwork(const NetworkInfo &info)
 228 {
 229     Network *netptr = instance()->_networks.value(info.networkId, 0);
 230     if (!netptr) {
 231         qWarning() << "Update for unknown network requested:" << info;
 232         return;
 233     }
 234     netptr->requestSetNetworkInfo(info);
 235 }
 236
 237
 238 void Client::addNetwork(Network *net)
 239 {
 240     net->setProxy(signalProxy());
 241     signalProxy()->synchronize(net);
 242     networkModel()->attachNetwork(net);
 243     connect(net, SIGNAL(destroyed()), instance(), SLOT(networkDestroyed()));
 244     instance()->_networks[net->networkId()] = net;
 245     emit instance()->networkCreated(net->networkId());
 246 }
 247
 248
 249 void Client::coreNetworkCreated(NetworkId id)
 250 {
 251     if (_networks.contains(id)) {
 252         qWarning() << "Creation of already existing network requested!";
 253         return;
 254     }
 255     Network *net = new Network(id, this);
 256     addNetwork(net);
 257 }
 258
 259
 260 void Client::coreNetworkRemoved(NetworkId id)
 261 {
 262     if (!_networks.contains(id))
 263         return;
 264     Network *net = _networks.take(id);
 265     emit networkRemoved(net->networkId());
 266     net->deleteLater();
 267 }
 268
 269
 270 /*** Identity handling ***/
 271
 272 QList<IdentityId> Client::identityIds()
 273 {
 274     return instance()->_identities.keys();
 275 }
 276
 277
 278 const Identity *Client::identity(IdentityId id)
 279 {
 280     if (instance()->_identities.contains(id)) return instance()->_identities[id];
 281     else return 0;
 282 }
 283
 284
 285 void Client::createIdentity(const CertIdentity &id)
 286 {
 287     QVariantMap additional;
 288 #ifdef HAVE_SSL
 289     additional["KeyPem"] = id.sslKey().toPem();
 290     additional["CertPem"] = id.sslCert().toPem();
 291 #endif
 292     emit instance()->requestCreateIdentity(id, additional);
 293 }
 294
 295
 296 void Client::updateIdentity(IdentityId id, const QVariantMap &ser)
 297 {
 298     Identity *idptr = instance()->_identities.value(id, 0);
 299     if (!idptr) {
 300         qWarning() << "Update for unknown identity requested:" << id;
 301         return;
 302     }
 303     idptr->requestUpdate(ser);
 304 }
 305
 306
 307 void Client::removeIdentity(IdentityId id)
 308 {
 309     emit instance()->requestRemoveIdentity(id);
 310 }
 311
 312
 313 void Client::coreIdentityCreated(const Identity &other)
 314 {
 315     if (!_identities.contains(other.id())) {
 316         Identity *identity = new Identity(other, this);
 317         _identities[other.id()] = identity;
 318         identity->setInitialized();
 319         signalProxy()->synchronize(identity);
 320         emit identityCreated(other.id());
 321     }
 322     else {
 323         qWarning() << tr("Identity already exists in client!");
 324     }
 325 }
 326
 327
 328 void Client::coreIdentityRemoved(IdentityId id)
 329 {
 330     if (_identities.contains(id)) {
 331         emit identityRemoved(id);
 332         Identity *i = _identities.take(id);
 333         i->deleteLater();
 334     }
 335 }
 336
 337
 338 /*** User input handling ***/
 339
 340 void Client::userInput(const BufferInfo &bufferInfo, const QString &message)
 341 {
 342     // we need to make sure that AliasManager is ready before processing input
 343     if (aliasManager() && aliasManager()->isInitialized())
 344         inputHandler()->handleUserInput(bufferInfo, message);
 345     else
 346         instance()->_userInputBuffer.append(qMakePair(bufferInfo, message));
 347 }
 348
 349
 350 void Client::sendBufferedUserInput()
 351 {
 352     for (int i = 0; i < _userInputBuffer.count(); i++)
 353         userInput(_userInputBuffer.at(i).first, _userInputBuffer.at(i).second);
 354
 355     _userInputBuffer.clear();
 356 }
 357
 358
 359 /*** core connection stuff ***/
 360
 361 void Client::connectionStateChanged(CoreConnection::ConnectionState state)
 362 {
 363     switch (state) {
 364     case CoreConnection::Disconnected:
 365         setDisconnectedFromCore();
 366         break;
 367     case CoreConnection::Synchronized:
 368         setSyncedToCore();
 369         break;
 370     default:
 371         break;
 372     }
 373 }
 374
 375
 376 void Client::setSyncedToCore()
 377 {
 378     // create buffersyncer
 379     Q_ASSERT(!_bufferSyncer);
 380     _bufferSyncer = new BufferSyncer(this);
 381     connect(bufferSyncer(), SIGNAL(lastSeenMsgSet(BufferId, MsgId)), _networkModel, SLOT(setLastSeenMsgId(BufferId, MsgId)));
 382     connect(bufferSyncer(), SIGNAL(markerLineSet(BufferId, MsgId)), _networkModel, SLOT(setMarkerLineMsgId(BufferId, MsgId)));
 383     connect(bufferSyncer(), SIGNAL(bufferRemoved(BufferId)), this, SLOT(bufferRemoved(BufferId)));
 384     connect(bufferSyncer(), SIGNAL(bufferRenamed(BufferId, QString)), this, SLOT(bufferRenamed(BufferId, QString)));
 385     connect(bufferSyncer(), SIGNAL(buffersPermanentlyMerged(BufferId, BufferId)), this, SLOT(buffersPermanentlyMerged(BufferId, BufferId)));
 386     connect(bufferSyncer(), SIGNAL(buffersPermanentlyMerged(BufferId, BufferId)), _messageModel, SLOT(buffersPermanentlyMerged(BufferId, BufferId)));
 387     connect(bufferSyncer(), SIGNAL(bufferMarkedAsRead(BufferId)), SIGNAL(bufferMarkedAsRead(BufferId)));
 388     connect(networkModel(), SIGNAL(requestSetLastSeenMsg(BufferId, MsgId)), bufferSyncer(), SLOT(requestSetLastSeenMsg(BufferId, const MsgId &)));
 389     signalProxy()->synchronize(bufferSyncer());
 390
 391     // create a new BufferViewManager
 392     Q_ASSERT(!_bufferViewManager);
 393     _bufferViewManager = new ClientBufferViewManager(signalProxy(), this);
 394     connect(_bufferViewManager, SIGNAL(initDone()), _bufferViewOverlay, SLOT(restore()));
 395
 396     // create AliasManager
 397     Q_ASSERT(!_aliasManager);
 398     _aliasManager = new ClientAliasManager(this);
 399     connect(aliasManager(), SIGNAL(initDone()), SLOT(sendBufferedUserInput()));
 400     signalProxy()->synchronize(aliasManager());
 401
 402     // create NetworkConfig
 403     Q_ASSERT(!_networkConfig);
 404     _networkConfig = new NetworkConfig("GlobalNetworkConfig", this);
 405     signalProxy()->synchronize(networkConfig());
 406
 407     // create IgnoreListManager
 408     Q_ASSERT(!_ignoreListManager);
 409     _ignoreListManager = new ClientIgnoreListManager(this);
 410     signalProxy()->synchronize(ignoreListManager());
 411
 412     Q_ASSERT(!_transferManager);
 413     _transferManager = new ClientTransferManager(this);
 414     signalProxy()->synchronize(transferManager());
 415
 416     // trigger backlog request once all active bufferviews are initialized
 417     connect(bufferViewOverlay(), SIGNAL(initDone()), this, SLOT(requestInitialBacklog()));
 418
 419     _connected = true;
 420     emit connected();
 421     emit coreConnectionStateChanged(true);
 422 }
 423
 424
 425 void Client::requestInitialBacklog()
 426 {
 427     // usually it _should_ take longer until the bufferViews are initialized, so that's what
 428     // triggers this slot. But we have to make sure that we know all buffers yet.
 429     // so we check the BufferSyncer and in case it wasn't initialized we wait for that instead
 430     if (!bufferSyncer()->isInitialized()) {
 431         disconnect(bufferViewOverlay(), SIGNAL(initDone()), this, SLOT(requestInitialBacklog()));
 432         connect(bufferSyncer(), SIGNAL(initDone()), this, SLOT(requestInitialBacklog()));
 433         return;
 434     }
 435     disconnect(bufferViewOverlay(), SIGNAL(initDone()), this, SLOT(requestInitialBacklog()));
 436     disconnect(bufferSyncer(), SIGNAL(initDone()), this, SLOT(requestInitialBacklog()));
 437
 438     _backlogManager->requestInitialBacklog();
 439 }
 440
 441
 442 void Client::disconnectFromCore()
 443 {
 444     if (!coreConnection()->isConnected())
 445         return;
 446
 447     coreConnection()->disconnectFromCore();
 448 }
 449
 450
 451 void Client::setDisconnectedFromCore()
 452 {
 453     _connected = false;
 454     _coreFeatures = 0;
 455
 456     emit disconnected();
 457     emit coreConnectionStateChanged(false);
 458
 459     backlogManager()->reset();
 460     messageProcessor()->reset();
 461
 462     // Clear internal data. Hopefully nothing relies on it at this point.
 463
 464     if (_bufferSyncer) {
 465         _bufferSyncer->deleteLater();
 466         _bufferSyncer = 0;
 467     }
 468
 469     if (_bufferViewManager) {
 470         _bufferViewManager->deleteLater();
 471         _bufferViewManager = 0;
 472     }
 473
 474     _bufferViewOverlay->reset();
 475
 476     if (_aliasManager) {
 477         _aliasManager->deleteLater();
 478         _aliasManager = 0;
 479     }
 480
 481     if (_ignoreListManager) {
 482         _ignoreListManager->deleteLater();
 483         _ignoreListManager = 0;
 484     }
 485
 486     if (_transferManager) {
 487         _transferManager->deleteLater();
 488         _transferManager = 0;
 489     }
 490
 491     // we probably don't want to save pending input for reconnect
 492     _userInputBuffer.clear();
 493
 494     _messageModel->clear();
 495     _networkModel->clear();
 496
 497     QHash<NetworkId, Network *>::iterator netIter = _networks.begin();
 498     while (netIter != _networks.end()) {
 499         Network *net = netIter.value();
 500         emit networkRemoved(net->networkId());
 501         disconnect(net, SIGNAL(destroyed()), this, 0);
 502         netIter = _networks.erase(netIter);
 503         net->deleteLater();
 504     }
 505     Q_ASSERT(_networks.isEmpty());
 506
 507     QHash<IdentityId, Identity *>::iterator idIter = _identities.begin();
 508     while (idIter != _identities.end()) {
 509         emit identityRemoved(idIter.key());
 510         Identity *id = idIter.value();
 511         idIter = _identities.erase(idIter);
 512         id->deleteLater();
 513     }
 514     Q_ASSERT(_identities.isEmpty());
 515
 516     if (_networkConfig) {
 517         _networkConfig->deleteLater();
 518         _networkConfig = 0;
 519     }
 520 }
 521
 522
 523 /*** ***/
 524
 525 void Client::networkDestroyed()
 526 {
 527     Network *net = static_cast<Network *>(sender());
 528     QHash<NetworkId, Network *>::iterator netIter = _networks.begin();
 529     while (netIter != _networks.end()) {
 530         if (*netIter == net) {
 531             netIter = _networks.erase(netIter);
 532             break;
 533         }
 534         else {
 535             netIter++;
 536         }
 537     }
 538 }
 539
 540
 541 // Hmm... we never used this...
 542 void Client::recvStatusMsg(QString /*net*/, QString /*msg*/)
 543 {
 544     //recvMessage(net, Message::server("", QString("[STATUS] %1").arg(msg)));
 545 }
 546
 547
 548 void Client::recvMessage(const Message &msg)
 549 {
 550     Message msg_ = msg;
 551     messageProcessor()->process(msg_);
 552 }
 553
 554
 555 void Client::setBufferLastSeenMsg(BufferId id, const MsgId &msgId)
 556 {
 557     if (bufferSyncer())
 558         bufferSyncer()->requestSetLastSeenMsg(id, msgId);
 559 }
 560
 561
 562 void Client::setMarkerLine(BufferId id, const MsgId &msgId)
 563 {
 564     if (bufferSyncer())
 565         bufferSyncer()->requestSetMarkerLine(id, msgId);
 566 }
 567
 568
 569 MsgId Client::markerLine(BufferId id)
 570 {
 571     if (id.isValid() && networkModel())
 572         return networkModel()->markerLineMsgId(id);
 573     return MsgId();
 574 }
 575
 576
 577 void Client::removeBuffer(BufferId id)
 578 {
 579     if (!bufferSyncer()) return;
 580     bufferSyncer()->requestRemoveBuffer(id);
 581 }
 582
 583
 584 void Client::renameBuffer(BufferId bufferId, const QString &newName)
 585 {
 586     if (!bufferSyncer())
 587         return;
 588     bufferSyncer()->requestRenameBuffer(bufferId, newName);
 589 }
 590
 591
 592 void Client::mergeBuffersPermanently(BufferId bufferId1, BufferId bufferId2)
 593 {
 594     if (!bufferSyncer())
 595         return;
 596     bufferSyncer()->requestMergeBuffersPermanently(bufferId1, bufferId2);
 597 }
 598
 599
 600 void Client::purgeKnownBufferIds()
 601 {
 602     if (!bufferSyncer())
 603         return;
 604     bufferSyncer()->requestPurgeBufferIds();
 605 }
 606
 607
 608 void Client::bufferRemoved(BufferId bufferId)
 609 {
 610     // select a sane buffer (status buffer)
 611     /* we have to manually select a buffer because otherwise inconsitent changes
 612      * to the model might occur:
 613      * the result of a buffer removal triggers a change in the selection model.
 614      * the newly selected buffer might be a channel that hasn't been selected yet
 615      * and a new nickview would be created (which never heard of the "rowsAboutToBeRemoved").
 616      * this new view (and/or) its sort filter will then only receive a "rowsRemoved" signal.
 617      */
 618     QModelIndex current = bufferModel()->currentIndex();
 619     if (current.data(NetworkModel::BufferIdRole).value<BufferId>() == bufferId) {
 620         bufferModel()->setCurrentIndex(current.sibling(0, 0));
 621     }
 622
 623     // and remove it from the model
 624     networkModel()->removeBuffer(bufferId);
 625 }
 626
 627
 628 void Client::bufferRenamed(BufferId bufferId, const QString &newName)
 629 {
 630     QModelIndex bufferIndex = networkModel()->bufferIndex(bufferId);
 631     if (bufferIndex.isValid()) {
 632         networkModel()->setData(bufferIndex, newName, Qt::DisplayRole);
 633     }
 634 }
 635
 636
 637 void Client::buffersPermanentlyMerged(BufferId bufferId1, BufferId bufferId2)
 638 {
 639     QModelIndex idx = networkModel()->bufferIndex(bufferId1);
 640     bufferModel()->setCurrentIndex(bufferModel()->mapFromSource(idx));
 641     networkModel()->removeBuffer(bufferId2);
 642 }
 643
 644
 645 void Client::markBufferAsRead(BufferId id)
 646 {
 647     if (bufferSyncer() && id.isValid())
 648         bufferSyncer()->requestMarkBufferAsRead(id);
 649 }
 650
 651 void Client::changePassword(QString newPassword) {
 652     CoreAccount account = currentCoreAccount();
 653     account.setPassword(newPassword);
 654     coreAccountModel()->createOrUpdateAccount(account);
 655     emit clientChangePassword(newPassword);
 656 }
 657
 658
 659 #if QT_VERSION < 0x050000
 660 void Client::logMessage(QtMsgType type, const char *msg)
 661 {
 662     fprintf(stderr, "%s\n", msg);
 663     fflush(stderr);
 664     if (type == QtFatalMsg) {
 665         Quassel::logFatalMessage(msg);
 666     }
 667     else {
 668         QString msgString = QString("%1\n").arg(msg);
 669
 670         //Check to see if there is an instance around, else we risk recursions
 671         //when calling instance() and creating new ones.
 672         if (!instanceExists())
 673             return;
 674
 675         instance()->_debugLog << msgString;
 676         emit instance()->logUpdated(msgString);
 677     }
 678 }
 679 #else
 680 void Client::logMessage(QtMsgType type, const QMessageLogContext &context, const QString &msg)
 681 {
 682     Q_UNUSED(context);
 683
 684     fprintf(stderr, "%s\n", msg.toLocal8Bit().constData());
 685     fflush(stderr);
 686     if (type == QtFatalMsg) {
 687         Quassel::logFatalMessage(msg.toLocal8Bit().constData());
 688     }
 689     else {
 690         QString msgString = QString("%1\n").arg(msg);
 691
 692         //Check to see if there is an instance around, else we risk recursions
 693         //when calling instance() and creating new ones.
 694         if (!instanceExists())
 695             return;
 696
 697         instance()->_debugLog << msgString;
 698         emit instance()->logUpdated(msgString);
 699     }
 700 }
 701 #endif