src/core/coresession.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2022 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     std::vector<NetworkInfo> networkInfos = Core::networks(user());
 211     for (IdentityId id : ids) {
 212         CoreIdentity identity(s.identity(id));
 213         IdentityId newId = Core::createIdentity(user(), identity);
 214         auto 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     for (NetworkId id : Core::connectedNetworks(user())) {
 248         auto net = network(id);
 249         Q_ASSERT(net);
 250         net->connectToIrc();
 251     }
 252 }
 253
 254 void CoreSession::addClient(RemotePeer* peer)
 255 {
 256     signalProxy()->setTargetPeer(peer);
 257
 258     peer->dispatch(sessionState());
 259     signalProxy()->addPeer(peer);
 260     _coreInfo->setConnectedClientData(signalProxy()->peerCount(), signalProxy()->peerData());
 261
 262     signalProxy()->setTargetPeer(nullptr);
 263
 264     if (_metricsServer) {
 265         _metricsServer->addClient(user());
 266     }
 267 }
 268
 269 void CoreSession::addClient(InternalPeer* peer)
 270 {
 271     signalProxy()->addPeer(peer);
 272     emit sessionStateReceived(sessionState());
 273 }
 274
 275 void CoreSession::removeClient(Peer* peer)
 276 {
 277     auto* p = qobject_cast<RemotePeer*>(peer);
 278     if (p)
 279         qInfo() << qPrintable(tr("Client")) << p->description() << qPrintable(tr("disconnected (UserId: %1).").arg(user().toInt()));
 280     _coreInfo->setConnectedClientData(signalProxy()->peerCount(), signalProxy()->peerData());
 281
 282     if (_metricsServer) {
 283         _metricsServer->removeClient(user());
 284     }
 285 }
 286
 287 QHash<QString, QString> CoreSession::persistentChannels(NetworkId id) const
 288 {
 289     return Core::persistentChannels(user(), id);
 290 }
 291
 292 QHash<QString, QByteArray> CoreSession::bufferCiphers(NetworkId id) const
 293 {
 294     return Core::bufferCiphers(user(), id);
 295 }
 296
 297 void CoreSession::setBufferCipher(NetworkId id, const QString& bufferName, const QByteArray& cipher) const
 298 {
 299     Core::setBufferCipher(user(), id, bufferName, cipher);
 300 }
 301
 302 // FIXME switch to BufferId
 303 void CoreSession::msgFromClient(BufferInfo bufinfo, QString msg)
 304 {
 305     CoreNetwork* net = network(bufinfo.networkId());
 306     if (net) {
 307         net->userInput(bufinfo, msg);
 308     }
 309     else {
 310         qWarning() << "Trying to send to unconnected network:" << msg;
 311     }
 312 }
 313
 314 // ALL messages coming pass through these functions before going to the GUI.
 315 // So this is the perfect place for storing the backlog and log stuff.
 316 void CoreSession::recvMessageFromServer(RawMessage msg)
 317 {
 318     // U+FDD0 and U+FDD1 are special characters for Qt's text engine, specifically they mark the boundaries of
 319     // text frames in a QTextDocument. This might lead to problems in widgets displaying QTextDocuments (such as
 320     // KDE's notifications), hence we remove those just to be safe.
 321     msg.text.remove(QChar(0xfdd0)).remove(QChar(0xfdd1));
 322
 323     // check for HardStrictness ignore
 324     CoreNetwork* currentNetwork = network(msg.networkId);
 325     QString networkName = currentNetwork ? currentNetwork->networkName() : QString("");
 326     switch (_ignoreListManager.match(msg, networkName)) {
 327     case IgnoreListManager::StrictnessType::HardStrictness:
 328         // Drop the message permanently
 329         return;
 330     case IgnoreListManager::StrictnessType::SoftStrictness:
 331         // Mark the message as (dynamically) ignored
 332         msg.flags |= Message::Flag::Ignored;
 333         break;
 334     case IgnoreListManager::StrictnessType::UnmatchedStrictness:
 335         // Keep the message unmodified
 336         break;
 337     }
 338
 339     if (currentNetwork && _highlightRuleManager.match(msg, currentNetwork->myNick(), currentNetwork->identityPtr()->nicks()))
 340         msg.flags |= Message::Flag::Highlight;
 341
 342     _messageQueue << std::move(msg);
 343     if (!_processMessages) {
 344         _processMessages = true;
 345         QCoreApplication::postEvent(this, new ProcessMessagesEvent());
 346     }
 347 }
 348
 349 void CoreSession::recvStatusMsgFromServer(QString msg)
 350 {
 351     auto* net = qobject_cast<CoreNetwork*>(sender());
 352     Q_ASSERT(net);
 353     emit displayStatusMsg(net->networkName(), std::move(msg));
 354 }
 355
 356 void CoreSession::processMessageEvent(MessageEvent* event)
 357 {
 358     recvMessageFromServer(RawMessage{
 359         event->timestamp(),
 360         event->networkId(),
 361         event->msgType(),
 362         event->bufferType(),
 363         event->target().isNull() ? "" : event->target(),
 364         event->text().isNull() ? "" : event->text(),
 365         event->sender().isNull() ? "" : event->sender(),
 366         event->msgFlags()
 367     });
 368 }
 369
 370 std::vector<BufferInfo> CoreSession::buffers() const
 371 {
 372     return Core::requestBuffers(user());
 373 }
 374
 375 void CoreSession::customEvent(QEvent* event)
 376 {
 377     if (event->type() != QEvent::User)
 378         return;
 379
 380     processMessages();
 381     event->accept();
 382 }
 383
 384 void CoreSession::processMessages()
 385 {
 386     if (_messageQueue.count() == 1) {
 387         const RawMessage& rawMsg = _messageQueue.first();
 388         bool createBuffer = !(rawMsg.flags & Message::Redirected);
 389         BufferInfo bufferInfo = Core::bufferInfo(user(), rawMsg.networkId, rawMsg.bufferType, rawMsg.target, createBuffer);
 390         if (!bufferInfo.isValid()) {
 391             Q_ASSERT(!createBuffer);
 392             bufferInfo = Core::bufferInfo(user(), rawMsg.networkId, BufferInfo::StatusBuffer, "");
 393         }
 394         Message msg(rawMsg.timestamp,
 395                     bufferInfo,
 396                     rawMsg.type,
 397                     rawMsg.text,
 398                     rawMsg.sender,
 399                     senderPrefixes(rawMsg.sender, bufferInfo),
 400                     realName(rawMsg.sender, rawMsg.networkId),
 401                     avatarUrl(rawMsg.sender, rawMsg.networkId),
 402                     rawMsg.flags);
 403         if (Core::storeMessage(msg))
 404             emit displayMsg(msg);
 405     }
 406     else {
 407         QHash<NetworkId, QHash<QString, BufferInfo>> bufferInfoCache;
 408         MessageList messages;
 409         QList<RawMessage> redirectedMessages;  // list of Messages which don't enforce a buffer creation
 410         BufferInfo bufferInfo;
 411         for (int i = 0; i < _messageQueue.count(); i++) {
 412             const RawMessage& rawMsg = _messageQueue.at(i);
 413             if (bufferInfoCache.contains(rawMsg.networkId) && bufferInfoCache[rawMsg.networkId].contains(rawMsg.target)) {
 414                 bufferInfo = bufferInfoCache[rawMsg.networkId][rawMsg.target];
 415             }
 416             else {
 417                 bool createBuffer = !(rawMsg.flags & Message::Redirected);
 418                 bufferInfo = Core::bufferInfo(user(), rawMsg.networkId, rawMsg.bufferType, rawMsg.target, createBuffer);
 419                 if (!bufferInfo.isValid()) {
 420                     Q_ASSERT(!createBuffer);
 421                     redirectedMessages << rawMsg;
 422                     continue;
 423                 }
 424                 bufferInfoCache[rawMsg.networkId][rawMsg.target] = bufferInfo;
 425             }
 426             Message msg(rawMsg.timestamp,
 427                         bufferInfo,
 428                         rawMsg.type,
 429                         rawMsg.text,
 430                         rawMsg.sender,
 431                         senderPrefixes(rawMsg.sender, bufferInfo),
 432                         realName(rawMsg.sender, rawMsg.networkId),
 433                         avatarUrl(rawMsg.sender, rawMsg.networkId),
 434                         rawMsg.flags);
 435             messages << msg;
 436         }
 437
 438         // recheck if there exists a buffer to store a redirected message in
 439         for (int i = 0; i < redirectedMessages.count(); i++) {
 440             const RawMessage& rawMsg = redirectedMessages.at(i);
 441             if (bufferInfoCache.contains(rawMsg.networkId) && bufferInfoCache[rawMsg.networkId].contains(rawMsg.target)) {
 442                 bufferInfo = bufferInfoCache[rawMsg.networkId][rawMsg.target];
 443             }
 444             else {
 445                 // no luck -> we store them in the StatusBuffer
 446                 bufferInfo = Core::bufferInfo(user(), rawMsg.networkId, BufferInfo::StatusBuffer, "");
 447                 // add the StatusBuffer to the Cache in case there are more Messages for the original target
 448                 bufferInfoCache[rawMsg.networkId][rawMsg.target] = bufferInfo;
 449             }
 450             Message msg(rawMsg.timestamp,
 451                         bufferInfo,
 452                         rawMsg.type,
 453                         rawMsg.text,
 454                         rawMsg.sender,
 455                         senderPrefixes(rawMsg.sender, bufferInfo),
 456                         realName(rawMsg.sender, rawMsg.networkId),
 457                         avatarUrl(rawMsg.sender, rawMsg.networkId),
 458                         rawMsg.flags);
 459             messages << msg;
 460         }
 461
 462         if (Core::storeMessages(messages)) {
 463             // FIXME: extend protocol to a displayMessages(MessageList)
 464             for (int i = 0; i < messages.count(); i++) {
 465                 emit displayMsg(messages[i]);
 466             }
 467         }
 468     }
 469     _processMessages = false;
 470     _messageQueue.clear();
 471 }
 472
 473 QString CoreSession::senderPrefixes(const QString& sender, const BufferInfo& bufferInfo) const
 474 {
 475     CoreNetwork* currentNetwork = network(bufferInfo.networkId());
 476     if (!currentNetwork) {
 477         return {};
 478     }
 479
 480     if (bufferInfo.type() != BufferInfo::ChannelBuffer) {
 481         return {};
 482     }
 483
 484     IrcChannel* currentChannel = currentNetwork->ircChannel(bufferInfo.bufferName());
 485     if (!currentChannel) {
 486         return {};
 487     }
 488
 489     const QString modes = currentChannel->userModes(nickFromMask(sender).toLower());
 490     return currentNetwork->modesToPrefixes(modes);
 491 }
 492
 493 QString CoreSession::realName(const QString& sender, NetworkId networkId) const
 494 {
 495     CoreNetwork* currentNetwork = network(networkId);
 496     if (!currentNetwork) {
 497         return {};
 498     }
 499
 500     IrcUser* currentUser = currentNetwork->ircUser(nickFromMask(sender));
 501     if (!currentUser) {
 502         return {};
 503     }
 504
 505     return currentUser->realName();
 506 }
 507
 508 QString CoreSession::avatarUrl(const QString& sender, NetworkId networkId) const
 509 {
 510     Q_UNUSED(sender);
 511     Q_UNUSED(networkId);
 512     // Currently we do not have a way to retrieve this value yet.
 513     //
 514     // This likely will require implementing IRCv3's METADATA spec.
 515     // See https://ircv3.net/irc/
 516     // And https://blog.irccloud.com/avatars/
 517     return "";
 518 }
 519
 520 Protocol::SessionState CoreSession::sessionState() const
 521 {
 522     QVariantList bufferInfos;
 523     QVariantList networkIds;
 524     QVariantList identities;
 525
 526     for (const BufferInfo& id : buffers()) {
 527         bufferInfos << QVariant::fromValue(id);
 528     }
 529     for (const NetworkId& id : _networks.keys()) {
 530         networkIds << QVariant::fromValue(id);
 531     }
 532     for (const Identity* i : _identities.values()) {
 533         identities << QVariant::fromValue(*i);
 534     }
 535
 536     return Protocol::SessionState(identities, bufferInfos, networkIds);
 537 }
 538
 539 /*** Identity Handling ***/
 540 void CoreSession::createIdentity(const Identity& identity, const QVariantMap& additional)
 541 {
 542     CoreIdentity coreIdentity(identity);
 543     if (additional.contains("KeyPem"))
 544         coreIdentity.setSslKey(additional["KeyPem"].toByteArray());
 545     if (additional.contains("CertPem"))
 546         coreIdentity.setSslCert(additional["CertPem"].toByteArray());
 547     qDebug() << Q_FUNC_INFO;
 548     IdentityId id = Core::createIdentity(user(), coreIdentity);
 549     if (!id.isValid())
 550         return;
 551     else
 552         createIdentity(coreIdentity);
 553 }
 554
 555 const QString CoreSession::strictCompliantIdent(const CoreIdentity* identity)
 556 {
 557     if (_strictIdentEnabled) {
 558         // Strict mode enabled: only allow the user's Quassel username as an ident
 559         return Core::instance()->strictSysIdent(_user);
 560     }
 561     else {
 562         // Strict mode disabled: allow any identity specified
 563         return identity->ident();
 564     }
 565 }
 566
 567 void CoreSession::createIdentity(const CoreIdentity& identity)
 568 {
 569     auto* coreIdentity = new CoreIdentity(identity, this);
 570     _identities[identity.id()] = coreIdentity;
 571     // CoreIdentity has its own synchronize method since its "private" sslManager needs to be synced as well
 572     coreIdentity->synchronize(signalProxy());
 573     connect(coreIdentity, &SyncableObject::updated, this, &CoreSession::updateIdentityBySender);
 574     emit identityCreated(*coreIdentity);
 575 }
 576
 577 void CoreSession::updateIdentityBySender()
 578 {
 579     auto* identity = qobject_cast<CoreIdentity*>(sender());
 580     if (!identity)
 581         return;
 582     Core::updateIdentity(user(), *identity);
 583 }
 584
 585 void CoreSession::removeIdentity(IdentityId id)
 586 {
 587     CoreIdentity* identity = _identities.take(id);
 588     if (identity) {
 589         emit identityRemoved(id);
 590         Core::removeIdentity(user(), id);
 591         identity->deleteLater();
 592     }
 593 }
 594
 595 /*** Network Handling ***/
 596
 597 void CoreSession::createNetwork(const NetworkInfo& info_, const QStringList& persistentChans)
 598 {
 599     NetworkInfo info = info_;
 600     int id;
 601
 602     if (!info.networkId.isValid())
 603         Core::createNetwork(user(), info);
 604
 605     if (!info.networkId.isValid()) {
 606         qWarning() << qPrintable(
 607             tr("CoreSession::createNetwork(): Got invalid networkId from Core when trying to create network %1!").arg(info.networkName));
 608         return;
 609     }
 610
 611     id = info.networkId.toInt();
 612     if (!_networks.contains(id)) {
 613         // create persistent chans
 614         QRegExp rx(R"(\s*(\S+)(?:\s*(\S+))?\s*)");
 615         for (const QString& channel : persistentChans) {
 616             if (!rx.exactMatch(channel)) {
 617                 qWarning() << QString("Invalid persistent channel declaration: %1").arg(channel);
 618                 continue;
 619             }
 620             Core::bufferInfo(user(), info.networkId, BufferInfo::ChannelBuffer, rx.cap(1), true);
 621             Core::setChannelPersistent(user(), info.networkId, rx.cap(1), true);
 622             if (!rx.cap(2).isEmpty())
 623                 Core::setPersistentChannelKey(user(), info.networkId, rx.cap(1), rx.cap(2));
 624         }
 625
 626         CoreNetwork* net = new CoreNetwork(id, this);
 627         connect(net, &CoreNetwork::displayMsg, this, &CoreSession::recvMessageFromServer);
 628         connect(net, &CoreNetwork::displayStatusMsg, this, &CoreSession::recvStatusMsgFromServer);
 629         connect(net, &CoreNetwork::disconnected, this, &CoreSession::networkDisconnected);
 630
 631         net->setNetworkInfo(info);
 632         net->setProxy(signalProxy());
 633         _networks[id] = net;
 634         signalProxy()->synchronize(net);
 635         emit networkCreated(id);
 636     }
 637     else {
 638         qWarning() << qPrintable(tr("CoreSession::createNetwork(): Trying to create a network that already exists, updating instead!"));
 639         _networks[info.networkId]->requestSetNetworkInfo(info);
 640     }
 641 }
 642
 643 void CoreSession::removeNetwork(NetworkId id)
 644 {
 645     // Make sure the network is disconnected!
 646     CoreNetwork* net = network(id);
 647     if (!net)
 648         return;
 649
 650     if (net->connectionState() != Network::Disconnected) {
 651         // make sure we no longer receive data from the tcp buffer
 652         disconnect(net, &CoreNetwork::displayMsg, this, nullptr);
 653         disconnect(net, &CoreNetwork::displayStatusMsg, this, nullptr);
 654         connect(net, &CoreNetwork::disconnected, this, &CoreSession::destroyNetwork);
 655         net->disconnectFromIrc();
 656     }
 657     else {
 658         destroyNetwork(id);
 659     }
 660 }
 661
 662 void CoreSession::destroyNetwork(NetworkId id)
 663 {
 664     Network* net = _networks.take(id);
 665     if (net && Core::removeNetwork(user(), id)) {
 666         // make sure that all unprocessed RawMessages from this network are removed
 667         QList<RawMessage>::iterator messageIter = _messageQueue.begin();
 668         while (messageIter != _messageQueue.end()) {
 669             if (messageIter->networkId == id) {
 670                 messageIter = _messageQueue.erase(messageIter);
 671             }
 672             else {
 673                 ++messageIter;
 674             }
 675         }
 676         // remove buffers from syncer
 677         for (BufferId bufferId : Core::requestBufferIdsForNetwork(user(), id)) {
 678             _bufferSyncer->removeBuffer(bufferId);
 679         }
 680         emit networkRemoved(id);
 681         net->deleteLater();
 682     }
 683 }
 684
 685 void CoreSession::renameBuffer(const NetworkId& networkId, const QString& newName, const QString& oldName)
 686 {
 687     BufferInfo bufferInfo = Core::bufferInfo(user(), networkId, BufferInfo::QueryBuffer, oldName, false);
 688     if (bufferInfo.isValid()) {
 689         _bufferSyncer->renameBuffer(bufferInfo.bufferId(), newName);
 690     }
 691 }
 692
 693 void CoreSession::clientsConnected()
 694 {
 695     QHash<NetworkId, CoreNetwork*>::iterator netIter = _networks.begin();
 696     Identity* identity = nullptr;
 697     CoreNetwork* net = nullptr;
 698     IrcUser* me = nullptr;
 699     while (netIter != _networks.end()) {
 700         net = *netIter;
 701         ++netIter;
 702
 703         if (!net->isConnected())
 704             continue;
 705         identity = net->identityPtr();
 706         if (!identity)
 707             continue;
 708         me = net->me();
 709         if (!me)
 710             continue;
 711
 712         if (identity->detachAwayEnabled() && me->isAway()) {
 713             net->userInputHandler()->handleAway(BufferInfo(), QString());
 714         }
 715     }
 716 }
 717
 718 void CoreSession::clientsDisconnected()
 719 {
 720     QHash<NetworkId, CoreNetwork*>::iterator netIter = _networks.begin();
 721     Identity* identity = nullptr;
 722     CoreNetwork* net = nullptr;
 723     IrcUser* me = nullptr;
 724     QString awayReason;
 725     while (netIter != _networks.end()) {
 726         net = *netIter;
 727         ++netIter;
 728
 729         if (!net->isConnected())
 730             continue;
 731
 732         identity = net->identityPtr();
 733         if (!identity)
 734             continue;
 735         me = net->me();
 736         if (!me)
 737             continue;
 738
 739         if (identity->detachAwayEnabled() && !me->isAway()) {
 740             if (!identity->detachAwayReason().isEmpty())
 741                 awayReason = identity->detachAwayReason();
 742             net->setAutoAwayActive(true);
 743             // Allow handleAway() to format the current date/time in the string.
 744             net->userInputHandler()->handleAway(BufferInfo(), awayReason);
 745         }
 746     }
 747 }
 748
 749 void CoreSession::globalAway(const QString& msg, const bool skipFormatting)
 750 {
 751     QHash<NetworkId, CoreNetwork*>::iterator netIter = _networks.begin();
 752     CoreNetwork* net = nullptr;
 753     while (netIter != _networks.end()) {
 754         net = *netIter;
 755         ++netIter;
 756
 757         if (!net->isConnected())
 758             continue;
 759
 760         net->userInputHandler()->issueAway(msg, false /* no force away */, skipFormatting);
 761     }
 762 }
 763
 764 void CoreSession::changePassword(PeerPtr peer, const QString& userName, const QString& oldPassword, const QString& newPassword)
 765 {
 766     Q_UNUSED(peer);
 767
 768     bool success = false;
 769     UserId uid = Core::validateUser(userName, oldPassword);
 770     if (uid.isValid() && uid == user())
 771         success = Core::changeUserPassword(uid, newPassword);
 772
 773     signalProxy()->restrictTargetPeers(signalProxy()->sourcePeer(), [&] { emit passwordChanged(nullptr, success); });
 774 }
 775
 776 void CoreSession::kickClient(int peerId)
 777 {
 778     auto peer = signalProxy()->peerById(peerId);
 779     if (peer == nullptr) {
 780         qWarning() << "Invalid peer Id: " << peerId;
 781         return;
 782     }
 783     signalProxy()->restrictTargetPeers(peer, [&] { emit disconnectFromCore(); });
 784 }