src/core/coresession.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2019 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 "coresession.h"
  22
  23 #include <utility>
  24
  25 #include "core.h"
  26 #include "corebacklogmanager.h"
  27 #include "corebuffersyncer.h"
  28 #include "corebufferviewmanager.h"
  29 #include "coredccconfig.h"
  30 #include "coreeventmanager.h"
  31 #include "coreidentity.h"
  32 #include "coreignorelistmanager.h"
  33 #include "coreinfo.h"
  34 #include "coreirclisthelper.h"
  35 #include "corenetwork.h"
  36 #include "corenetworkconfig.h"
  37 #include "coresessioneventprocessor.h"
  38 #include "coretransfermanager.h"
  39 #include "coreuserinputhandler.h"
  40 #include "coreusersettings.h"
  41 #include "ctcpparser.h"
  42 #include "eventstringifier.h"
  43 #include "internalpeer.h"
  44 #include "ircchannel.h"
  45 #include "ircparser.h"
  46 #include "ircuser.h"
  47 #include "messageevent.h"
  48 #include "remotepeer.h"
  49 #include "storage.h"
  50 #include "util.h"
  51
  52 class ProcessMessagesEvent : public QEvent
  53 {
  54 public:
  55     ProcessMessagesEvent()
  56         : QEvent(QEvent::User)
  57     {}
  58 };
  59
  60 CoreSession::CoreSession(UserId uid, bool restoreState, bool strictIdentEnabled, QObject* parent)
  61     : QObject(parent)
  62     , _user(uid)
  63     , _strictIdentEnabled(strictIdentEnabled)
  64     , _signalProxy(new SignalProxy(SignalProxy::Server, this))
  65     , _aliasManager(this)
  66     , _bufferSyncer(new CoreBufferSyncer(this))
  67     , _backlogManager(new CoreBacklogManager(this))
  68     , _bufferViewManager(new CoreBufferViewManager(_signalProxy, this))
  69     , _dccConfig(new CoreDccConfig(this))
  70     , _ircListHelper(new CoreIrcListHelper(this))
  71     , _networkConfig(new CoreNetworkConfig("GlobalNetworkConfig", this))
  72     , _coreInfo(new CoreInfo(this))
  73     , _transferManager(new CoreTransferManager(this))
  74     , _eventManager(new CoreEventManager(this))
  75     , _eventStringifier(new EventStringifier(this))
  76     , _sessionEventProcessor(new CoreSessionEventProcessor(this))
  77     , _ctcpParser(new CtcpParser(this))
  78     , _ircParser(new IrcParser(this))
  79     , _processMessages(false)
  80     , _ignoreListManager(this)
  81     , _highlightRuleManager(this)
  82     , _metricsServer(Core::instance()->metricsServer())
  83 {
  84     SignalProxy* p = signalProxy();
  85     p->setHeartBeatInterval(30);
  86     p->setMaxHeartBeatCount(60);  // 30 mins until we throw a dead socket out
  87
  88     connect(p, &SignalProxy::peerRemoved, this, &CoreSession::removeClient);
  89
  90     connect(p, &SignalProxy::connected, this, &CoreSession::clientsConnected);
  91     connect(p, &SignalProxy::disconnected, this, &CoreSession::clientsDisconnected);
  92
  93     p->attachSlot(SIGNAL(sendInput(BufferInfo,QString)), this, &CoreSession::msgFromClient);
  94     p->attachSignal(this, &CoreSession::displayMsg);
  95     p->attachSignal(this, &CoreSession::displayStatusMsg);
  96
  97     p->attachSignal(this, &CoreSession::identityCreated);
  98     p->attachSignal(this, &CoreSession::identityRemoved);
  99     p->attachSlot(SIGNAL(createIdentity(Identity,QVariantMap)), this, selectOverload<const Identity&, const QVariantMap&>(&CoreSession::createIdentity));
 100     p->attachSlot(SIGNAL(removeIdentity(IdentityId)), this, &CoreSession::removeIdentity);
 101
 102     p->attachSignal(this, &CoreSession::networkCreated);
 103     p->attachSignal(this, &CoreSession::networkRemoved);
 104     p->attachSlot(SIGNAL(createNetwork(NetworkInfo,QStringList)), this,&CoreSession::createNetwork);
 105     p->attachSlot(SIGNAL(removeNetwork(NetworkId)), this, &CoreSession::removeNetwork);
 106
 107     p->attachSlot(SIGNAL(changePassword(PeerPtr,QString,QString,QString)), this, &CoreSession::changePassword);
 108     p->attachSignal(this, &CoreSession::passwordChanged);
 109
 110     p->attachSlot(SIGNAL(kickClient(int)), this, &CoreSession::kickClient);
 111     p->attachSignal(this, &CoreSession::disconnectFromCore);
 112
 113     QVariantMap data;
 114     data["quasselVersion"] = Quassel::buildInfo().fancyVersionString;
 115     data["quasselBuildDate"] = Quassel::buildInfo().commitDate;  // "BuildDate" for compatibility
 116     data["startTime"] = Core::startTime();
 117     data["sessionConnectedClients"] = 0;
 118     _coreInfo->setCoreData(data);
 119
 120     loadSettings();
 121
 122     eventManager()->registerObject(ircParser(), EventManager::NormalPriority);
 123     eventManager()->registerObject(sessionEventProcessor(), EventManager::HighPriority);  // needs to process events *before* the stringifier!
 124     eventManager()->registerObject(ctcpParser(), EventManager::NormalPriority);
 125     eventManager()->registerObject(eventStringifier(), EventManager::NormalPriority);
 126     eventManager()->registerObject(this, EventManager::LowPriority);  // for sending MessageEvents to the client
 127     // some events need to be handled after msg generation
 128     eventManager()->registerObject(sessionEventProcessor(), EventManager::LowPriority, "lateProcess");
 129     eventManager()->registerObject(ctcpParser(), EventManager::LowPriority, "send");
 130
 131     // periodically save our session state
 132     connect(Core::syncTimer(), &QTimer::timeout, this, &CoreSession::saveSessionState);
 133
 134     p->synchronize(_bufferSyncer);
 135     p->synchronize(&aliasManager());
 136     p->synchronize(_backlogManager);
 137     p->synchronize(dccConfig());
 138     p->synchronize(ircListHelper());
 139     p->synchronize(networkConfig());
 140     p->synchronize(_coreInfo);
 141     p->synchronize(&_ignoreListManager);
 142     p->synchronize(&_highlightRuleManager);
 143     // Listen to network removed events
 144     connect(this, &CoreSession::networkRemoved, &_highlightRuleManager, &HighlightRuleManager::networkRemoved);
 145     p->synchronize(transferManager());
 146     // Restore session state
 147     if (restoreState)
 148         restoreSessionState();
 149
 150     emit initialized();
 151
 152     if (_metricsServer) {
 153         _metricsServer->addSession(user(), Core::instance()->strictSysIdent(_user));
 154     }
 155 }
 156
 157 void CoreSession::shutdown()
 158 {
 159     saveSessionState();
 160
 161     // Request disconnect from all connected networks in parallel, and wait until every network
 162     // has emitted the disconnected() signal before deleting the session itself
 163     for (CoreNetwork* net : _networks.values()) {
 164         if (net->socketState() != QAbstractSocket::UnconnectedState) {
 165             _networksPendingDisconnect.insert(net->networkId());
 166             connect(net, &CoreNetwork::disconnected, this, &CoreSession::onNetworkDisconnected);
 167             net->shutdown();
 168         }
 169     }
 170
 171     if (_networksPendingDisconnect.isEmpty()) {
 172         // Nothing to do, suicide so the core can shut down
 173         deleteLater();
 174     }
 175
 176     if (_metricsServer) {
 177         _metricsServer->removeSession(user());
 178     }
 179 }
 180
 181 void CoreSession::onNetworkDisconnected(NetworkId networkId)
 182 {
 183     _networksPendingDisconnect.remove(networkId);
 184     if (_networksPendingDisconnect.isEmpty()) {
 185         // We're done, suicide so the core can shut down
 186         deleteLater();
 187     }
 188 }
 189
 190 CoreNetwork* CoreSession::network(NetworkId id) const
 191 {
 192     if (_networks.contains(id))
 193         return _networks[id];
 194     return nullptr;
 195 }
 196
 197 CoreIdentity* CoreSession::identity(IdentityId id) const
 198 {
 199     if (_identities.contains(id))
 200         return _identities[id];
 201     return nullptr;
 202 }
 203
 204 void CoreSession::loadSettings()
 205 {
 206     CoreUserSettings s(user());
 207
 208     // migrate to db
 209     QList<IdentityId> ids = s.identityIds();
 210     QList<NetworkInfo> networkInfos = Core::networks(user());
 211     for (IdentityId id : ids) {
 212         CoreIdentity identity(s.identity(id));
 213         IdentityId newId = Core::createIdentity(user(), identity);
 214         QList<NetworkInfo>::iterator networkIter = networkInfos.begin();
 215         while (networkIter != networkInfos.end()) {
 216             if (networkIter->identity == id) {
 217                 networkIter->identity = newId;
 218                 Core::updateNetwork(user(), *networkIter);
 219                 networkIter = networkInfos.erase(networkIter);
 220             }
 221             else {
 222                 ++networkIter;
 223             }
 224         }
 225         s.removeIdentity(id);
 226     }
 227     // end of migration
 228
 229     for (const CoreIdentity& identity : Core::identities(user())) {
 230         createIdentity(identity);
 231     }
 232
 233     for (const NetworkInfo& info : Core::networks(user())) {
 234         createNetwork(info);
 235     }
 236 }
 237
 238 void CoreSession::saveSessionState() const
 239 {
 240     _bufferSyncer->storeDirtyIds();
 241     _bufferViewManager->saveBufferViews();
 242     _networkConfig->save();
 243 }
 244
 245 void CoreSession::restoreSessionState()
 246 {
 247     QList<NetworkId> nets = Core::connectedNetworks(user());
 248     CoreNetwork* net = nullptr;
 249     for (NetworkId id :  nets) {
 250         net = network(id);
 251         Q_ASSERT(net);
 252         net->connectToIrc();
 253     }
 254 }
 255
 256 void CoreSession::addClient(RemotePeer* peer)
 257 {
 258     signalProxy()->setTargetPeer(peer);
 259
 260     peer->dispatch(sessionState());
 261     signalProxy()->addPeer(peer);
 262     _coreInfo->setConnectedClientData(signalProxy()->peerCount(), signalProxy()->peerData());
 263
 264     signalProxy()->setTargetPeer(nullptr);
 265
 266     if (_metricsServer) {
 267         _metricsServer->addClient(user());
 268     }
 269 }
 270
 271 void CoreSession::addClient(InternalPeer* peer)
 272 {
 273     signalProxy()->addPeer(peer);
 274     emit sessionStateReceived(sessionState());
 275 }
 276
 277 void CoreSession::removeClient(Peer* peer)
 278 {
 279     auto* p = qobject_cast<RemotePeer*>(peer);
 280     if (p)
 281         qInfo() << qPrintable(tr("Client")) << p->description() << qPrintable(tr("disconnected (UserId: %1).").arg(user().toInt()));
 282     _coreInfo->setConnectedClientData(signalProxy()->peerCount(), signalProxy()->peerData());
 283
 284     if (_metricsServer) {
 285         _metricsServer->removeClient(user());
 286     }
 287 }
 288
 289 QHash<QString, QString> CoreSession::persistentChannels(NetworkId id) const
 290 {
 291     return Core::persistentChannels(user(), id);
 292 }
 293
 294 QHash<QString, QByteArray> CoreSession::bufferCiphers(NetworkId id) const
 295 {
 296     return Core::bufferCiphers(user(), id);
 297 }
 298
 299 void CoreSession::setBufferCipher(NetworkId id, const QString& bufferName, const QByteArray& cipher) const
 300 {
 301     Core::setBufferCipher(user(), id, bufferName, cipher);
 302 }
 303
 304 // FIXME switch to BufferId
 305 void CoreSession::msgFromClient(BufferInfo bufinfo, QString msg)
 306 {
 307     CoreNetwork* net = network(bufinfo.networkId());
 308     if (net) {
 309         net->userInput(bufinfo, msg);
 310     }
 311     else {
 312         qWarning() << "Trying to send to unconnected network:" << msg;
 313     }
 314 }
 315
 316 // ALL messages coming pass through these functions before going to the GUI.
 317 // So this is the perfect place for storing the backlog and log stuff.
 318 void CoreSession::recvMessageFromServer(RawMessage msg)
 319 {
 320     // U+FDD0 and U+FDD1 are special characters for Qt's text engine, specifically they mark the boundaries of
 321     // text frames in a QTextDocument. This might lead to problems in widgets displaying QTextDocuments (such as
 322     // KDE's notifications), hence we remove those just to be safe.
 323     msg.text.remove(QChar(0xfdd0)).remove(QChar(0xfdd1));
 324
 325     // check for HardStrictness ignore
 326     CoreNetwork* currentNetwork = network(msg.networkId);
 327     QString networkName = currentNetwork ? currentNetwork->networkName() : QString("");
 328     if (_ignoreListManager.match(msg, networkName) == IgnoreListManager::HardStrictness)
 329         return;
 330
 331     if (currentNetwork && _highlightRuleManager.match(msg, currentNetwork->myNick(), currentNetwork->identityPtr()->nicks()))
 332         msg.flags |= Message::Flag::Highlight;
 333
 334     _messageQueue << std::move(msg);
 335     if (!_processMessages) {
 336         _processMessages = true;
 337         QCoreApplication::postEvent(this, new ProcessMessagesEvent());
 338     }
 339 }
 340
 341 void CoreSession::recvStatusMsgFromServer(QString msg)
 342 {
 343     auto* net = qobject_cast<CoreNetwork*>(sender());
 344     Q_ASSERT(net);
 345     emit displayStatusMsg(net->networkName(), std::move(msg));
 346 }
 347
 348 void CoreSession::processMessageEvent(MessageEvent* event)
 349 {
 350     recvMessageFromServer(RawMessage{
 351         event->timestamp(),
 352         event->networkId(),
 353         event->msgType(),
 354         event->bufferType(),
 355         event->target().isNull() ? "" : event->target(),
 356         event->text().isNull() ? "" : event->text(),
 357         event->sender().isNull() ? "" : event->sender(),
 358         event->msgFlags()
 359     });
 360 }
 361
 362 QList<BufferInfo> CoreSession::buffers() const
 363 {
 364     return Core::requestBuffers(user());
 365 }
 366
 367 void CoreSession::customEvent(QEvent* event)
 368 {
 369     if (event->type() != QEvent::User)
 370         return;
 371
 372     processMessages();
 373     event->accept();
 374 }
 375
 376 void CoreSession::processMessages()
 377 {
 378     if (_messageQueue.count() == 1) {
 379         const RawMessage& rawMsg = _messageQueue.first();
 380         bool createBuffer = !(rawMsg.flags & Message::Redirected);
 381         BufferInfo bufferInfo = Core::bufferInfo(user(), rawMsg.networkId, rawMsg.bufferType, rawMsg.target, createBuffer);
 382         if (!bufferInfo.isValid()) {
 383             Q_ASSERT(!createBuffer);
 384             bufferInfo = Core::bufferInfo(user(), rawMsg.networkId, BufferInfo::StatusBuffer, "");
 385         }
 386         Message msg(rawMsg.timestamp,
 387                     bufferInfo,
 388                     rawMsg.type,
 389                     rawMsg.text,
 390                     rawMsg.sender,
 391                     senderPrefixes(rawMsg.sender, bufferInfo),
 392                     realName(rawMsg.sender, rawMsg.networkId),
 393                     avatarUrl(rawMsg.sender, rawMsg.networkId),
 394                     rawMsg.flags);
 395         if (Core::storeMessage(msg))
 396             emit displayMsg(msg);
 397     }
 398     else {
 399         QHash<NetworkId, QHash<QString, BufferInfo>> bufferInfoCache;
 400         MessageList messages;
 401         QList<RawMessage> redirectedMessages;  // list of Messages which don't enforce a buffer creation
 402         BufferInfo bufferInfo;
 403         for (int i = 0; i < _messageQueue.count(); i++) {
 404             const RawMessage& rawMsg = _messageQueue.at(i);
 405             if (bufferInfoCache.contains(rawMsg.networkId) && bufferInfoCache[rawMsg.networkId].contains(rawMsg.target)) {
 406                 bufferInfo = bufferInfoCache[rawMsg.networkId][rawMsg.target];
 407             }
 408             else {
 409                 bool createBuffer = !(rawMsg.flags & Message::Redirected);
 410                 bufferInfo = Core::bufferInfo(user(), rawMsg.networkId, rawMsg.bufferType, rawMsg.target, createBuffer);
 411                 if (!bufferInfo.isValid()) {
 412                     Q_ASSERT(!createBuffer);
 413                     redirectedMessages << rawMsg;
 414                     continue;
 415                 }
 416                 bufferInfoCache[rawMsg.networkId][rawMsg.target] = bufferInfo;
 417             }
 418             Message msg(rawMsg.timestamp,
 419                         bufferInfo,
 420                         rawMsg.type,
 421                         rawMsg.text,
 422                         rawMsg.sender,
 423                         senderPrefixes(rawMsg.sender, bufferInfo),
 424                         realName(rawMsg.sender, rawMsg.networkId),
 425                         avatarUrl(rawMsg.sender, rawMsg.networkId),
 426                         rawMsg.flags);
 427             messages << msg;
 428         }
 429
 430         // recheck if there exists a buffer to store a redirected message in
 431         for (int i = 0; i < redirectedMessages.count(); i++) {
 432             const RawMessage& rawMsg = redirectedMessages.at(i);
 433             if (bufferInfoCache.contains(rawMsg.networkId) && bufferInfoCache[rawMsg.networkId].contains(rawMsg.target)) {
 434                 bufferInfo = bufferInfoCache[rawMsg.networkId][rawMsg.target];
 435             }
 436             else {
 437                 // no luck -> we store them in the StatusBuffer
 438                 bufferInfo = Core::bufferInfo(user(), rawMsg.networkId, BufferInfo::StatusBuffer, "");
 439                 // add the StatusBuffer to the Cache in case there are more Messages for the original target
 440                 bufferInfoCache[rawMsg.networkId][rawMsg.target] = bufferInfo;
 441             }
 442             Message msg(rawMsg.timestamp,
 443                         bufferInfo,
 444                         rawMsg.type,
 445                         rawMsg.text,
 446                         rawMsg.sender,
 447                         senderPrefixes(rawMsg.sender, bufferInfo),
 448                         realName(rawMsg.sender, rawMsg.networkId),
 449                         avatarUrl(rawMsg.sender, rawMsg.networkId),
 450                         rawMsg.flags);
 451             messages << msg;
 452         }
 453
 454         if (Core::storeMessages(messages)) {
 455             // FIXME: extend protocol to a displayMessages(MessageList)
 456             for (int i = 0; i < messages.count(); i++) {
 457                 emit displayMsg(messages[i]);
 458             }
 459         }
 460     }
 461     _processMessages = false;
 462     _messageQueue.clear();
 463 }
 464
 465 QString CoreSession::senderPrefixes(const QString& sender, const BufferInfo& bufferInfo) const
 466 {
 467     CoreNetwork* currentNetwork = network(bufferInfo.networkId());
 468     if (!currentNetwork) {
 469         return {};
 470     }
 471
 472     if (bufferInfo.type() != BufferInfo::ChannelBuffer) {
 473         return {};
 474     }
 475
 476     IrcChannel* currentChannel = currentNetwork->ircChannel(bufferInfo.bufferName());
 477     if (!currentChannel) {
 478         return {};
 479     }
 480
 481     const QString modes = currentChannel->userModes(nickFromMask(sender).toLower());
 482     return currentNetwork->modesToPrefixes(modes);
 483 }
 484
 485 QString CoreSession::realName(const QString& sender, NetworkId networkId) const
 486 {
 487     CoreNetwork* currentNetwork = network(networkId);
 488     if (!currentNetwork) {
 489         return {};
 490     }
 491
 492     IrcUser* currentUser = currentNetwork->ircUser(nickFromMask(sender));
 493     if (!currentUser) {
 494         return {};
 495     }
 496
 497     return currentUser->realName();
 498 }
 499
 500 QString CoreSession::avatarUrl(const QString& sender, NetworkId networkId) const
 501 {
 502     Q_UNUSED(sender);
 503     Q_UNUSED(networkId);
 504     // Currently we do not have a way to retrieve this value yet.
 505     //
 506     // This likely will require implementing IRCv3's METADATA spec.
 507     // See https://ircv3.net/irc/
 508     // And https://blog.irccloud.com/avatars/
 509     return "";
 510 }
 511
 512 Protocol::SessionState CoreSession::sessionState() const
 513 {
 514     QVariantList bufferInfos;
 515     QVariantList networkIds;
 516     QVariantList identities;
 517
 518     for (const BufferInfo& id : buffers()) {
 519         bufferInfos << QVariant::fromValue(id);
 520     }
 521     for (const NetworkId& id : _networks.keys()) {
 522         networkIds << QVariant::fromValue(id);
 523     }
 524     for (const Identity* i : _identities.values()) {
 525         identities << QVariant::fromValue(*i);
 526     }
 527
 528     return Protocol::SessionState(identities, bufferInfos, networkIds);
 529 }
 530
 531 /*** Identity Handling ***/
 532 void CoreSession::createIdentity(const Identity& identity, const QVariantMap& additional)
 533 {
 534 #ifndef HAVE_SSL
 535     Q_UNUSED(additional)
 536 #endif
 537
 538     CoreIdentity coreIdentity(identity);
 539 #ifdef HAVE_SSL
 540     if (additional.contains("KeyPem"))
 541         coreIdentity.setSslKey(additional["KeyPem"].toByteArray());
 542     if (additional.contains("CertPem"))
 543         coreIdentity.setSslCert(additional["CertPem"].toByteArray());
 544 #endif
 545     qDebug() << Q_FUNC_INFO;
 546     IdentityId id = Core::createIdentity(user(), coreIdentity);
 547     if (!id.isValid())
 548         return;
 549     else
 550         createIdentity(coreIdentity);
 551 }
 552
 553 const QString CoreSession::strictCompliantIdent(const CoreIdentity* identity)
 554 {
 555     if (_strictIdentEnabled) {
 556         // Strict mode enabled: only allow the user's Quassel username as an ident
 557         return Core::instance()->strictSysIdent(_user);
 558     }
 559     else {
 560         // Strict mode disabled: allow any identity specified
 561         return identity->ident();
 562     }
 563 }
 564
 565 void CoreSession::createIdentity(const CoreIdentity& identity)
 566 {
 567     auto* coreIdentity = new CoreIdentity(identity, this);
 568     _identities[identity.id()] = coreIdentity;
 569     // CoreIdentity has its own synchronize method since its "private" sslManager needs to be synced as well
 570     coreIdentity->synchronize(signalProxy());
 571     connect(coreIdentity, &SyncableObject::updated, this, &CoreSession::updateIdentityBySender);
 572     emit identityCreated(*coreIdentity);
 573 }
 574
 575 void CoreSession::updateIdentityBySender()
 576 {
 577     auto* identity = qobject_cast<CoreIdentity*>(sender());
 578     if (!identity)
 579         return;
 580     Core::updateIdentity(user(), *identity);
 581 }
 582
 583 void CoreSession::removeIdentity(IdentityId id)
 584 {
 585     CoreIdentity* identity = _identities.take(id);
 586     if (identity) {
 587         emit identityRemoved(id);
 588         Core::removeIdentity(user(), id);
 589         identity->deleteLater();
 590     }
 591 }
 592
 593 /*** Network Handling ***/
 594
 595 void CoreSession::createNetwork(const NetworkInfo& info_, const QStringList& persistentChans)
 596 {
 597     NetworkInfo info = info_;
 598     int id;
 599
 600     if (!info.networkId.isValid())
 601         Core::createNetwork(user(), info);
 602
 603     if (!info.networkId.isValid()) {
 604         qWarning() << qPrintable(
 605             tr("CoreSession::createNetwork(): Got invalid networkId from Core when trying to create network %1!").arg(info.networkName));
 606         return;
 607     }
 608
 609     id = info.networkId.toInt();
 610     if (!_networks.contains(id)) {
 611         // create persistent chans
 612         QRegExp rx(R"(\s*(\S+)(?:\s*(\S+))?\s*)");
 613         for (const QString& channel : persistentChans) {
 614             if (!rx.exactMatch(channel)) {
 615                 qWarning() << QString("Invalid persistent channel declaration: %1").arg(channel);
 616                 continue;
 617             }
 618             Core::bufferInfo(user(), info.networkId, BufferInfo::ChannelBuffer, rx.cap(1), true);
 619             Core::setChannelPersistent(user(), info.networkId, rx.cap(1), true);
 620             if (!rx.cap(2).isEmpty())
 621                 Core::setPersistentChannelKey(user(), info.networkId, rx.cap(1), rx.cap(2));
 622         }
 623
 624         CoreNetwork* net = new CoreNetwork(id, this);
 625         connect(net, &CoreNetwork::displayMsg, this, &CoreSession::recvMessageFromServer);
 626         connect(net, &CoreNetwork::displayStatusMsg, this, &CoreSession::recvStatusMsgFromServer);
 627         connect(net, &CoreNetwork::disconnected, this, &CoreSession::networkDisconnected);
 628
 629         net->setNetworkInfo(info);
 630         net->setProxy(signalProxy());
 631         _networks[id] = net;
 632         signalProxy()->synchronize(net);
 633         emit networkCreated(id);
 634     }
 635     else {
 636         qWarning() << qPrintable(tr("CoreSession::createNetwork(): Trying to create a network that already exists, updating instead!"));
 637         _networks[info.networkId]->requestSetNetworkInfo(info);
 638     }
 639 }
 640
 641 void CoreSession::removeNetwork(NetworkId id)
 642 {
 643     // Make sure the network is disconnected!
 644     CoreNetwork* net = network(id);
 645     if (!net)
 646         return;
 647
 648     if (net->connectionState() != Network::Disconnected) {
 649         // make sure we no longer receive data from the tcp buffer
 650         disconnect(net, &CoreNetwork::displayMsg, this, nullptr);
 651         disconnect(net, &CoreNetwork::displayStatusMsg, this, nullptr);
 652         connect(net, &CoreNetwork::disconnected, this, &CoreSession::destroyNetwork);
 653         net->disconnectFromIrc();
 654     }
 655     else {
 656         destroyNetwork(id);
 657     }
 658 }
 659
 660 void CoreSession::destroyNetwork(NetworkId id)
 661 {
 662     QList<BufferId> removedBuffers = Core::requestBufferIdsForNetwork(user(), id);
 663     Network* net = _networks.take(id);
 664     if (net && Core::removeNetwork(user(), id)) {
 665         // make sure that all unprocessed RawMessages from this network are removed
 666         QList<RawMessage>::iterator messageIter = _messageQueue.begin();
 667         while (messageIter != _messageQueue.end()) {
 668             if (messageIter->networkId == id) {
 669                 messageIter = _messageQueue.erase(messageIter);
 670             }
 671             else {
 672                 ++messageIter;
 673             }
 674         }
 675         // remove buffers from syncer
 676         for (BufferId bufferId : removedBuffers) {
 677             _bufferSyncer->removeBuffer(bufferId);
 678         }
 679         emit networkRemoved(id);
 680         net->deleteLater();
 681     }
 682 }
 683
 684 void CoreSession::renameBuffer(const NetworkId& networkId, const QString& newName, const QString& oldName)
 685 {
 686     BufferInfo bufferInfo = Core::bufferInfo(user(), networkId, BufferInfo::QueryBuffer, oldName, false);
 687     if (bufferInfo.isValid()) {
 688         _bufferSyncer->renameBuffer(bufferInfo.bufferId(), newName);
 689     }
 690 }
 691
 692 void CoreSession::clientsConnected()
 693 {
 694     QHash<NetworkId, CoreNetwork*>::iterator netIter = _networks.begin();
 695     Identity* identity = nullptr;
 696     CoreNetwork* net = nullptr;
 697     IrcUser* me = nullptr;
 698     while (netIter != _networks.end()) {
 699         net = *netIter;
 700         ++netIter;
 701
 702         if (!net->isConnected())
 703             continue;
 704         identity = net->identityPtr();
 705         if (!identity)
 706             continue;
 707         me = net->me();
 708         if (!me)
 709             continue;
 710
 711         if (identity->detachAwayEnabled() && me->isAway()) {
 712             net->userInputHandler()->handleAway(BufferInfo(), QString());
 713         }
 714     }
 715 }
 716
 717 void CoreSession::clientsDisconnected()
 718 {
 719     QHash<NetworkId, CoreNetwork*>::iterator netIter = _networks.begin();
 720     Identity* identity = nullptr;
 721     CoreNetwork* net = nullptr;
 722     IrcUser* me = nullptr;
 723     QString awayReason;
 724     while (netIter != _networks.end()) {
 725         net = *netIter;
 726         ++netIter;
 727
 728         if (!net->isConnected())
 729             continue;
 730
 731         identity = net->identityPtr();
 732         if (!identity)
 733             continue;
 734         me = net->me();
 735         if (!me)
 736             continue;
 737
 738         if (identity->detachAwayEnabled() && !me->isAway()) {
 739             if (!identity->detachAwayReason().isEmpty())
 740                 awayReason = identity->detachAwayReason();
 741             net->setAutoAwayActive(true);
 742             // Allow handleAway() to format the current date/time in the string.
 743             net->userInputHandler()->handleAway(BufferInfo(), awayReason);
 744         }
 745     }
 746 }
 747
 748 void CoreSession::globalAway(const QString& msg, const bool skipFormatting)
 749 {
 750     QHash<NetworkId, CoreNetwork*>::iterator netIter = _networks.begin();
 751     CoreNetwork* net = nullptr;
 752     while (netIter != _networks.end()) {
 753         net = *netIter;
 754         ++netIter;
 755
 756         if (!net->isConnected())
 757             continue;
 758
 759         net->userInputHandler()->issueAway(msg, false /* no force away */, skipFormatting);
 760     }
 761 }
 762
 763 void CoreSession::changePassword(PeerPtr peer, const QString& userName, const QString& oldPassword, const QString& newPassword)
 764 {
 765     Q_UNUSED(peer);
 766
 767     bool success = false;
 768     UserId uid = Core::validateUser(userName, oldPassword);
 769     if (uid.isValid() && uid == user())
 770         success = Core::changeUserPassword(uid, newPassword);
 771
 772     signalProxy()->restrictTargetPeers(signalProxy()->sourcePeer(), [&] { emit passwordChanged(nullptr, success); });
 773 }
 774
 775 void CoreSession::kickClient(int peerId)
 776 {
 777     auto peer = signalProxy()->peerById(peerId);
 778     if (peer == nullptr) {
 779         qWarning() << "Invalid peer Id: " << peerId;
 780         return;
 781     }
 782     signalProxy()->restrictTargetPeers(peer, [&] { emit disconnectFromCore(); });
 783 }