src/core/coresessioneventprocessor.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2016 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  *                                                                         *
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  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  19  ***************************************************************************/
  20
  21 #include "coresessioneventprocessor.h"
  22
  23 #include "coreirclisthelper.h"
  24 #include "corenetwork.h"
  25 #include "coresession.h"
  26 #include "coretransfer.h"
  27 #include "coretransfermanager.h"
  28 #include "ctcpevent.h"
  29 #include "ircevent.h"
  30 #include "ircuser.h"
  31 #include "logger.h"
  32 #include "messageevent.h"
  33 #include "netsplit.h"
  34 #include "quassel.h"
  35
  36 #ifdef HAVE_QCA2
  37 #  include "keyevent.h"
  38 #endif
  39
  40 // IRCv3 capabilities
  41 #include "irccap.h"
  42
  43 CoreSessionEventProcessor::CoreSessionEventProcessor(CoreSession *session)
  44     : BasicHandler("handleCtcp", session),
  45     _coreSession(session)
  46 {
  47     connect(coreSession(), SIGNAL(networkDisconnected(NetworkId)), this, SLOT(destroyNetsplits(NetworkId)));
  48     connect(this, SIGNAL(newEvent(Event *)), coreSession()->eventManager(), SLOT(postEvent(Event *)));
  49 }
  50
  51
  52 bool CoreSessionEventProcessor::checkParamCount(IrcEvent *e, int minParams)
  53 {
  54     if (e->params().count() < minParams) {
  55         if (e->type() == EventManager::IrcEventNumeric) {
  56             qWarning() << "Command " << static_cast<IrcEventNumeric *>(e)->number() << " requires " << minParams << "params, got: " << e->params();
  57         }
  58         else {
  59             QString name = coreSession()->eventManager()->enumName(e->type());
  60             qWarning() << qPrintable(name) << "requires" << minParams << "params, got:" << e->params();
  61         }
  62         e->stop();
  63         return false;
  64     }
  65     return true;
  66 }
  67
  68
  69 void CoreSessionEventProcessor::tryNextNick(NetworkEvent *e, const QString &errnick, bool erroneus)
  70 {
  71     QStringList desiredNicks = coreSession()->identity(e->network()->identity())->nicks();
  72     int nextNickIdx = desiredNicks.indexOf(errnick) + 1;
  73     QString nextNick;
  74     if (nextNickIdx > 0 && desiredNicks.size() > nextNickIdx) {
  75         nextNick = desiredNicks[nextNickIdx];
  76     }
  77     else {
  78         if (erroneus) {
  79             // FIXME Make this an ErrorEvent or something like that, so it's translated in the client
  80             MessageEvent *msgEvent = new MessageEvent(Message::Error, e->network(),
  81                 tr("No free and valid nicks in nicklist found. use: /nick <othernick> to continue"),
  82                 QString(), QString(), Message::None, e->timestamp());
  83             emit newEvent(msgEvent);
  84             return;
  85         }
  86         else {
  87             nextNick = errnick + "_";
  88         }
  89     }
  90     // FIXME Use a proper output event for this
  91     coreNetwork(e)->putRawLine("NICK " + coreNetwork(e)->encodeServerString(nextNick));
  92 }
  93
  94
  95 void CoreSessionEventProcessor::processIrcEventNumeric(IrcEventNumeric *e)
  96 {
  97     switch (e->number()) {
  98     // SASL authentication replies
  99     // See: http://ircv3.net/specs/extensions/sasl-3.1.html
 100
 101     //case 900:  // RPL_LOGGEDIN
 102     //case 901:  // RPL_LOGGEDOUT
 103     // Don't use 900 or 901 for updating the local hostmask.  Unreal 3.2 gives it as the IP address
 104     // even when cloaked.
 105     // Every other reply should result in moving on
 106     // TODO Handle errors to stop connection if appropriate
 107     case 902:  // ERR_NICKLOCKED
 108     case 903:  // RPL_SASLSUCCESS
 109     case 904:  // ERR_SASLFAIL
 110     case 905:  // ERR_SASLTOOLONG
 111     case 906:  // ERR_SASLABORTED
 112     case 907:  // ERR_SASLALREADY
 113         // Move on to the next capability
 114         coreNetwork(e)->sendNextCap();
 115         break;
 116
 117     default:
 118         break;
 119     }
 120 }
 121
 122
 123 void CoreSessionEventProcessor::processIrcEventAuthenticate(IrcEvent *e)
 124 {
 125     if (!checkParamCount(e, 1))
 126         return;
 127
 128     if (e->params().at(0) != "+") {
 129         qWarning() << "Invalid AUTHENTICATE" << e;
 130         return;
 131     }
 132
 133     CoreNetwork *net = coreNetwork(e);
 134
 135 #ifdef HAVE_SSL
 136     if (net->identityPtr()->sslCert().isNull()) {
 137 #endif
 138         QString construct = net->saslAccount();
 139         construct.append(QChar(QChar::Null));
 140         construct.append(net->saslAccount());
 141         construct.append(QChar(QChar::Null));
 142         construct.append(net->saslPassword());
 143         QByteArray saslData = QByteArray(construct.toLatin1().toBase64());
 144         saslData.prepend("AUTHENTICATE ");
 145         net->putRawLine(saslData);
 146 #ifdef HAVE_SSL
 147     } else {
 148         net->putRawLine("AUTHENTICATE +");
 149     }
 150 #endif
 151 }
 152
 153 void CoreSessionEventProcessor::processIrcEventCap(IrcEvent *e)
 154 {
 155     // Handle capability negotiation
 156     // See: http://ircv3.net/specs/core/capability-negotiation-3.2.html
 157     // And: http://ircv3.net/specs/core/capability-negotiation-3.1.html
 158     if (e->params().count() >= 3) {
 159         CoreNetwork *coreNet = coreNetwork(e);
 160         QString capCommand = e->params().at(1).trimmed().toUpper();
 161         if (capCommand == "LS" || capCommand == "NEW") {
 162             // Either we've gotten a list of capabilities, or new capabilities we may want
 163             // Server: CAP * LS * :multi-prefix extended-join account-notify batch invite-notify tls
 164             // Server: CAP * LS * :cap-notify server-time example.org/dummy-cap=dummyvalue example.org/second-dummy-cap
 165             // Server: CAP * LS :userhost-in-names sasl=EXTERNAL,DH-AES,DH-BLOWFISH,ECDSA-NIST256P-CHALLENGE,PLAIN
 166             bool capListFinished;
 167             QStringList availableCaps;
 168             if (e->params().count() == 4) {
 169                 // Middle of multi-line reply, ignore the asterisk
 170                 capListFinished = false;
 171                 availableCaps = e->params().at(3).split(' ');
 172             } else {
 173                 // Single line reply
 174                 capListFinished = true;
 175                 availableCaps = e->params().at(2).split(' ');
 176             }
 177             // Store what capabilities are available
 178             QStringList availableCapPair;
 179             for (int i = 0; i < availableCaps.count(); ++i) {
 180                 // Capability may include values, e.g. CAP * LS :multi-prefix sasl=EXTERNAL
 181                 availableCapPair = availableCaps[i].trimmed().split('=');
 182                 if(availableCapPair.count() >= 2) {
 183                     coreNet->addCap(availableCapPair.at(0).trimmed().toLower(), availableCapPair.at(1).trimmed());
 184                 } else {
 185                     coreNet->addCap(availableCapPair.at(0).trimmed().toLower());
 186                 }
 187             }
 188
 189             // Begin capability requests when capability listing complete
 190             if (capListFinished)
 191                 coreNet->beginCapNegotiation();
 192         } else if (capCommand == "ACK") {
 193             // Server: CAP * ACK :multi-prefix sasl
 194             // Got the capability we want, handle as needed.
 195             // As only one capability is requested at a time, no need to split
 196             QString acceptedCap = e->params().at(2).trimmed().toLower();
 197
 198             // Mark this cap as accepted
 199             coreNet->acknowledgeCap(acceptedCap);
 200
 201             if (!coreNet->capsRequiringConfiguration.contains(acceptedCap)) {
 202                 // Some capabilities (e.g. SASL) require further messages to finish.  If so, do NOT
 203                 // send the next capability; it will be handled elsewhere in CoreNetwork.
 204                 // Otherwise, move on to the next capability
 205                 coreNet->sendNextCap();
 206             }
 207         } else if (capCommand == "NAK" || capCommand == "DEL") {
 208             // Either something went wrong with this capability, or it is no longer supported
 209             // > For CAP NAK
 210             // Server: CAP * NAK :multi-prefix sasl
 211             // > For CAP DEL
 212             // Server: :irc.example.com CAP modernclient DEL :multi-prefix sasl
 213             // CAP NAK and CAP DEL replies are always single-line
 214
 215             QStringList removedCaps;
 216             removedCaps = e->params().at(2).split(' ');
 217
 218             // Store what capability was denied or removed
 219             QString removedCap;
 220             for (int i = 0; i < removedCaps.count(); ++i) {
 221                 removedCap = removedCaps[i].trimmed().toLower();
 222                 // Mark this cap as removed
 223                 coreNet->removeCap(removedCap);
 224             }
 225
 226             if (capCommand == "NAK") {
 227                 // Continue negotiation when capability listing complete only if this is the result
 228                 // of a denied cap, not a removed cap
 229                 coreNet->sendNextCap();
 230             }
 231         }
 232     }
 233 }
 234
 235 /* IRCv3 account-notify
 236  * Log in:  ":nick!user@host ACCOUNT accountname"
 237  * Log out: ":nick!user@host ACCOUNT *" */
 238 void CoreSessionEventProcessor::processIrcEventAccount(IrcEvent *e)
 239 {
 240     if (!checkParamCount(e, 1))
 241         return;
 242
 243     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 244     if (ircuser) {
 245         QString newAccount = e->params().at(0);
 246         // WHOX uses '0' to indicate logged-out, account-notify uses '*'
 247         if (newAccount != "*") {
 248             // Account logged in, set account name
 249             ircuser->setAccount(newAccount);
 250         } else {
 251             // Account logged out, set account name to logged-out
 252             ircuser->setAccount("*");
 253         }
 254     } else {
 255         qDebug() << "Received account-notify data for unknown user" << e->prefix();
 256     }
 257 }
 258
 259 /* IRCv3 away-notify - ":nick!user@host AWAY [:message]" */
 260 void CoreSessionEventProcessor::processIrcEventAway(IrcEvent *e)
 261 {
 262     if (!checkParamCount(e, 2))
 263         return;
 264
 265     // Nick is sent as part of parameters in order to split user/server decoding
 266     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 267     if (ircuser) {
 268         if (!e->params().at(1).isEmpty()) {
 269             ircuser->setAway(true);
 270             ircuser->setAwayMessage(e->params().at(1));
 271         } else {
 272             ircuser->setAway(false);
 273         }
 274     } else {
 275         qDebug() << "Received away-notify data for unknown user" << e->params().at(0);
 276     }
 277 }
 278
 279 /* IRCv3 chghost - ":nick!user@host CHGHOST newuser new.host.goes.here" */
 280 void CoreSessionEventProcessor::processIrcEventChghost(IrcEvent *e)
 281 {
 282     if (!checkParamCount(e, 2))
 283         return;
 284
 285     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 286     if (ircuser) {
 287         // Update with new user/hostname information.  setUser/setHost handles checking what
 288         // actually changed.
 289         ircuser->setUser(e->params().at(0));
 290         ircuser->setHost(e->params().at(1));
 291     } else {
 292         qDebug() << "Received chghost data for unknown user" << e->prefix();
 293     }
 294 }
 295
 296 void CoreSessionEventProcessor::processIrcEventInvite(IrcEvent *e)
 297 {
 298     if (checkParamCount(e, 2)) {
 299         e->network()->updateNickFromMask(e->prefix());
 300     }
 301 }
 302
 303
 304 void CoreSessionEventProcessor::processIrcEventJoin(IrcEvent *e)
 305 {
 306     if (e->testFlag(EventManager::Fake)) // generated by handleEarlyNetsplitJoin
 307         return;
 308
 309     if (!checkParamCount(e, 1))
 310         return;
 311
 312     CoreNetwork *net = coreNetwork(e);
 313     QString channel = e->params()[0];
 314     IrcUser *ircuser = net->updateNickFromMask(e->prefix());
 315
 316     if (net->capEnabled(IrcCap::EXTENDED_JOIN)) {
 317         if (!checkParamCount(e, 3))
 318             return;
 319         // If logged in, :nick!user@host JOIN #channelname accountname :Real Name
 320         // If logged out, :nick!user@host JOIN #channelname * :Real Name
 321         // See:  http://ircv3.net/specs/extensions/extended-join-3.1.html
 322         // FIXME Keep track of authed user account, requires adding support to ircuser.h/cpp
 323         ircuser->setRealName(e->params()[2]);
 324     }
 325     // Else :nick!user@host JOIN #channelname
 326
 327     bool handledByNetsplit = false;
 328     foreach(Netsplit* n, _netsplits.value(e->network())) {
 329         handledByNetsplit = n->userJoined(e->prefix(), channel);
 330         if (handledByNetsplit)
 331             break;
 332     }
 333
 334     // If using away-notify, check new users.  Works around buggy IRC servers
 335     // forgetting to send :away messages for users who join channels when away.
 336     if (net->capEnabled(IrcCap::AWAY_NOTIFY)) {
 337         net->queueAutoWhoOneshot(ircuser->nick());
 338     }
 339
 340     if (!handledByNetsplit)
 341         ircuser->joinChannel(channel);
 342     else
 343         e->setFlag(EventManager::Netsplit);
 344
 345     if (net->isMe(ircuser)) {
 346         net->setChannelJoined(channel);
 347         // FIXME use event
 348         net->putRawLine(net->serverEncode("MODE " + channel)); // we want to know the modes of the channel we just joined, so we ask politely
 349     }
 350 }
 351
 352
 353 void CoreSessionEventProcessor::lateProcessIrcEventKick(IrcEvent *e)
 354 {
 355     if (checkParamCount(e, 2)) {
 356         e->network()->updateNickFromMask(e->prefix());
 357         IrcUser *victim = e->network()->ircUser(e->params().at(1));
 358         if (victim) {
 359             victim->partChannel(e->params().at(0));
 360             //if(e->network()->isMe(victim)) e->network()->setKickedFromChannel(channel);
 361         }
 362     }
 363 }
 364
 365
 366 void CoreSessionEventProcessor::processIrcEventMode(IrcEvent *e)
 367 {
 368     if (!checkParamCount(e, 2))
 369         return;
 370
 371     if (e->network()->isChannelName(e->params().first())) {
 372         // Channel Modes
 373
 374         IrcChannel *channel = e->network()->ircChannel(e->params()[0]);
 375         if (!channel) {
 376             // we received mode information for a channel we're not in. that means probably we've just been kicked out or something like that
 377             // anyways: we don't have a place to store the data --> discard the info.
 378             return;
 379         }
 380
 381         QString modes = e->params()[1];
 382         bool add = true;
 383         int paramOffset = 2;
 384         for (int c = 0; c < modes.length(); c++) {
 385             if (modes[c] == '+') {
 386                 add = true;
 387                 continue;
 388             }
 389             if (modes[c] == '-') {
 390                 add = false;
 391                 continue;
 392             }
 393
 394             if (e->network()->prefixModes().contains(modes[c])) {
 395                 // user channel modes (op, voice, etc...)
 396                 if (paramOffset < e->params().count()) {
 397                     IrcUser *ircUser = e->network()->ircUser(e->params()[paramOffset]);
 398                     if (!ircUser) {
 399                         qWarning() << Q_FUNC_INFO << "Unknown IrcUser:" << e->params()[paramOffset];
 400                     }
 401                     else {
 402                         if (add) {
 403                             bool handledByNetsplit = false;
 404                             QHash<QString, Netsplit *> splits = _netsplits.value(e->network());
 405                             foreach(Netsplit* n, _netsplits.value(e->network())) {
 406                                 handledByNetsplit = n->userAlreadyJoined(ircUser->hostmask(), channel->name());
 407                                 if (handledByNetsplit) {
 408                                     n->addMode(ircUser->hostmask(), channel->name(), QString(modes[c]));
 409                                     break;
 410                                 }
 411                             }
 412                             if (!handledByNetsplit)
 413                                 channel->addUserMode(ircUser, QString(modes[c]));
 414                         }
 415                         else
 416                             channel->removeUserMode(ircUser, QString(modes[c]));
 417                     }
 418                 }
 419                 else {
 420                     qWarning() << "Received MODE with too few parameters:" << e->params();
 421                 }
 422                 ++paramOffset;
 423             }
 424             else {
 425                 // regular channel modes
 426                 QString value;
 427                 Network::ChannelModeType modeType = e->network()->channelModeType(modes[c]);
 428                 if (modeType == Network::A_CHANMODE || modeType == Network::B_CHANMODE || (modeType == Network::C_CHANMODE && add)) {
 429                     if (paramOffset < e->params().count()) {
 430                         value = e->params()[paramOffset];
 431                     }
 432                     else {
 433                         qWarning() << "Received MODE with too few parameters:" << e->params();
 434                     }
 435                     ++paramOffset;
 436                 }
 437
 438                 if (add)
 439                     channel->addChannelMode(modes[c], value);
 440                 else
 441                     channel->removeChannelMode(modes[c], value);
 442             }
 443         }
 444     }
 445     else {
 446         // pure User Modes
 447         IrcUser *ircUser = e->network()->newIrcUser(e->params().first());
 448         QString modeString(e->params()[1]);
 449         QString addModes;
 450         QString removeModes;
 451         bool add = false;
 452         for (int c = 0; c < modeString.count(); c++) {
 453             if (modeString[c] == '+') {
 454                 add = true;
 455                 continue;
 456             }
 457             if (modeString[c] == '-') {
 458                 add = false;
 459                 continue;
 460             }
 461             if (add)
 462                 addModes += modeString[c];
 463             else
 464                 removeModes += modeString[c];
 465         }
 466         if (!addModes.isEmpty())
 467             ircUser->addUserModes(addModes);
 468         if (!removeModes.isEmpty())
 469             ircUser->removeUserModes(removeModes);
 470
 471         if (e->network()->isMe(ircUser)) {
 472             coreNetwork(e)->updatePersistentModes(addModes, removeModes);
 473         }
 474     }
 475 }
 476
 477
 478 void CoreSessionEventProcessor::lateProcessIrcEventNick(IrcEvent *e)
 479 {
 480     if (checkParamCount(e, 1)) {
 481         IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 482         if (!ircuser) {
 483             qWarning() << Q_FUNC_INFO << "Unknown IrcUser!";
 484             return;
 485         }
 486         QString newnick = e->params().at(0);
 487         QString oldnick = ircuser->nick();
 488
 489         // the order is cruicial
 490         // otherwise the client would rename the buffer, see that the assigned ircuser doesn't match anymore
 491         // and remove the ircuser from the querybuffer leading to a wrong on/offline state
 492         ircuser->setNick(newnick);
 493         coreSession()->renameBuffer(e->networkId(), newnick, oldnick);
 494     }
 495 }
 496
 497
 498 void CoreSessionEventProcessor::lateProcessIrcEventPart(IrcEvent *e)
 499 {
 500     if (checkParamCount(e, 1)) {
 501         IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 502         if (!ircuser) {
 503             qWarning() << Q_FUNC_INFO<< "Unknown IrcUser!";
 504             return;
 505         }
 506         QString channel = e->params().at(0);
 507         ircuser->partChannel(channel);
 508         if (e->network()->isMe(ircuser))
 509             qobject_cast<CoreNetwork *>(e->network())->setChannelParted(channel);
 510     }
 511 }
 512
 513
 514 void CoreSessionEventProcessor::processIrcEventPing(IrcEvent *e)
 515 {
 516     QString param = e->params().count() ? e->params().first() : QString();
 517     // FIXME use events
 518     coreNetwork(e)->putRawLine("PONG " + coreNetwork(e)->serverEncode(param));
 519 }
 520
 521
 522 void CoreSessionEventProcessor::processIrcEventPong(IrcEvent *e)
 523 {
 524     // the server is supposed to send back what we passed as param. and we send a timestamp
 525     // but using quote and whatnought one can send arbitrary pings, so we have to do some sanity checks
 526     if (checkParamCount(e, 2)) {
 527         QString timestamp = e->params().at(1);
 528         QTime sendTime = QTime::fromString(timestamp, "hh:mm:ss.zzz");
 529         if (sendTime.isValid())
 530             e->network()->setLatency(sendTime.msecsTo(QTime::currentTime()) / 2);
 531     }
 532 }
 533
 534
 535 void CoreSessionEventProcessor::processIrcEventQuit(IrcEvent *e)
 536 {
 537     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 538     if (!ircuser)
 539         return;
 540
 541     QString msg;
 542     if (e->params().count() > 0)
 543         msg = e->params()[0];
 544
 545     // check if netsplit
 546     if (Netsplit::isNetsplit(msg)) {
 547         Netsplit *n;
 548         if (!_netsplits[e->network()].contains(msg)) {
 549             n = new Netsplit(e->network(), this);
 550             connect(n, SIGNAL(finished()), this, SLOT(handleNetsplitFinished()));
 551             connect(n, SIGNAL(netsplitJoin(Network*, QString, QStringList, QStringList, QString)),
 552                 this, SLOT(handleNetsplitJoin(Network*, QString, QStringList, QStringList, QString)));
 553             connect(n, SIGNAL(netsplitQuit(Network*, QString, QStringList, QString)),
 554                 this, SLOT(handleNetsplitQuit(Network*, QString, QStringList, QString)));
 555             connect(n, SIGNAL(earlyJoin(Network*, QString, QStringList, QStringList)),
 556                 this, SLOT(handleEarlyNetsplitJoin(Network*, QString, QStringList, QStringList)));
 557             _netsplits[e->network()].insert(msg, n);
 558         }
 559         else {
 560             n = _netsplits[e->network()][msg];
 561         }
 562         // add this user to the netsplit
 563         n->userQuit(e->prefix(), ircuser->channels(), msg);
 564         e->setFlag(EventManager::Netsplit);
 565     }
 566     // normal quit is handled in lateProcessIrcEventQuit()
 567 }
 568
 569
 570 void CoreSessionEventProcessor::lateProcessIrcEventQuit(IrcEvent *e)
 571 {
 572     if (e->testFlag(EventManager::Netsplit))
 573         return;
 574
 575     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 576     if (!ircuser)
 577         return;
 578
 579     ircuser->quit();
 580 }
 581
 582
 583 void CoreSessionEventProcessor::processIrcEventTopic(IrcEvent *e)
 584 {
 585     if (checkParamCount(e, 2)) {
 586         e->network()->updateNickFromMask(e->prefix());
 587         IrcChannel *channel = e->network()->ircChannel(e->params().at(0));
 588         if (channel)
 589             channel->setTopic(e->params().at(1));
 590     }
 591 }
 592
 593
 594 #ifdef HAVE_QCA2
 595 void CoreSessionEventProcessor::processKeyEvent(KeyEvent *e)
 596 {
 597     if (!Cipher::neededFeaturesAvailable()) {
 598         emit newEvent(new MessageEvent(Message::Error, e->network(), tr("Unable to perform key exchange, missing qca-ossl plugin."), e->prefix(), e->target(), Message::None, e->timestamp()));
 599         return;
 600     }
 601     CoreNetwork *net = qobject_cast<CoreNetwork*>(e->network());
 602     Cipher *c = net->cipher(e->target());
 603     if (!c) // happens when there is no CoreIrcChannel for the target (i.e. never?)
 604         return;
 605
 606     if (e->exchangeType() == KeyEvent::Init) {
 607         QByteArray pubKey = c->parseInitKeyX(e->key());
 608         if (pubKey.isEmpty()) {
 609             emit newEvent(new MessageEvent(Message::Error, e->network(), tr("Unable to parse the DH1080_INIT. Key exchange failed."), e->prefix(), e->target(), Message::None, e->timestamp()));
 610             return;
 611         } else {
 612             net->setCipherKey(e->target(), c->key());
 613             emit newEvent(new MessageEvent(Message::Info, e->network(), tr("Your key is set and messages will be encrypted."), e->prefix(), e->target(), Message::None, e->timestamp()));
 614             QList<QByteArray> p;
 615             p << net->serverEncode(e->target()) << net->serverEncode("DH1080_FINISH ")+pubKey;
 616             net->putCmd("NOTICE", p);
 617         }
 618     } else {
 619         if (c->parseFinishKeyX(e->key())) {
 620             net->setCipherKey(e->target(), c->key());
 621             emit newEvent(new MessageEvent(Message::Info, e->network(), tr("Your key is set and messages will be encrypted."), e->prefix(), e->target(), Message::None, e->timestamp()));
 622         } else {
 623             emit newEvent(new MessageEvent(Message::Info, e->network(), tr("Failed to parse DH1080_FINISH. Key exchange failed."), e->prefix(), e->target(), Message::None, e->timestamp()));
 624         }
 625     }
 626 }
 627 #endif
 628
 629
 630 /* RPL_WELCOME */
 631 void CoreSessionEventProcessor::processIrcEvent001(IrcEventNumeric *e)
 632 {
 633     e->network()->setCurrentServer(e->prefix());
 634     e->network()->setMyNick(e->target());
 635 }
 636
 637
 638 /* RPL_ISUPPORT */
 639 // TODO Complete 005 handling, also use sensible defaults for non-sent stuff
 640 void CoreSessionEventProcessor::processIrcEvent005(IrcEvent *e)
 641 {
 642     if (!checkParamCount(e, 1))
 643         return;
 644
 645     QString key, value;
 646     for (int i = 0; i < e->params().count() - 1; i++) {
 647         QString key = e->params()[i].section("=", 0, 0);
 648         QString value = e->params()[i].section("=", 1);
 649         e->network()->addSupport(key, value);
 650     }
 651
 652     /* determine our prefixes here to get an accurate result */
 653     e->network()->determinePrefixes();
 654 }
 655
 656
 657 /* RPL_UMODEIS - "<user_modes> [<user_mode_params>]" */
 658 void CoreSessionEventProcessor::processIrcEvent221(IrcEvent *)
 659 {
 660     // TODO: save information in network object
 661 }
 662
 663
 664 /* RPL_STATSCONN - "Highest connection cout: 8000 (7999 clients)" */
 665 void CoreSessionEventProcessor::processIrcEvent250(IrcEvent *)
 666 {
 667     // TODO: save information in network object
 668 }
 669
 670
 671 /* RPL_LOCALUSERS - "Current local user: 5024  Max: 7999 */
 672 void CoreSessionEventProcessor::processIrcEvent265(IrcEvent *)
 673 {
 674     // TODO: save information in network object
 675 }
 676
 677
 678 /* RPL_GLOBALUSERS - "Current global users: 46093  Max: 47650" */
 679 void CoreSessionEventProcessor::processIrcEvent266(IrcEvent *)
 680 {
 681     // TODO: save information in network object
 682 }
 683
 684
 685 /*
 686 WHOIS-Message:
 687    Replies 311 - 313, 317 - 319 are all replies generated in response to a WHOIS message.
 688   and 301 (RPL_AWAY)
 689               "<nick> :<away message>"
 690 WHO-Message:
 691    Replies 352 and 315 paired are used to answer a WHO message.
 692
 693 WHOWAS-Message:
 694    Replies 314 and 369 are responses to a WHOWAS message.
 695
 696 */
 697
 698 /* RPL_AWAY - "<nick> :<away message>" */
 699 void CoreSessionEventProcessor::processIrcEvent301(IrcEvent *e)
 700 {
 701     if (!checkParamCount(e, 2))
 702         return;
 703
 704     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 705     if (ircuser) {
 706         ircuser->setAway(true);
 707         ircuser->setAwayMessage(e->params().at(1));
 708         //ircuser->setLastAwayMessage(now);
 709     }
 710 }
 711
 712
 713 /* RPL_UNAWAY - ":You are no longer marked as being away" */
 714 void CoreSessionEventProcessor::processIrcEvent305(IrcEvent *e)
 715 {
 716     IrcUser *me = e->network()->me();
 717     if (me)
 718         me->setAway(false);
 719
 720     if (e->network()->autoAwayActive()) {
 721         e->network()->setAutoAwayActive(false);
 722         e->setFlag(EventManager::Silent);
 723     }
 724 }
 725
 726
 727 /* RPL_NOWAWAY - ":You have been marked as being away" */
 728 void CoreSessionEventProcessor::processIrcEvent306(IrcEvent *e)
 729 {
 730     IrcUser *me = e->network()->me();
 731     if (me)
 732         me->setAway(true);
 733 }
 734
 735
 736 /* RPL_WHOISSERVICE - "<user> is registered nick" */
 737 void CoreSessionEventProcessor::processIrcEvent307(IrcEvent *e)
 738 {
 739     if (!checkParamCount(e, 1))
 740         return;
 741
 742     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 743     if (ircuser)
 744         ircuser->setWhoisServiceReply(e->params().join(" "));
 745 }
 746
 747
 748 /* RPL_SUSERHOST - "<user> is available for help." */
 749 void CoreSessionEventProcessor::processIrcEvent310(IrcEvent *e)
 750 {
 751     if (!checkParamCount(e, 1))
 752         return;
 753
 754     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 755     if (ircuser)
 756         ircuser->setSuserHost(e->params().join(" "));
 757 }
 758
 759
 760 /*  RPL_WHOISUSER - "<nick> <user> <host> * :<real name>" */
 761 void CoreSessionEventProcessor::processIrcEvent311(IrcEvent *e)
 762 {
 763     if (!checkParamCount(e, 3))
 764         return;
 765
 766     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 767     if (ircuser) {
 768         ircuser->setUser(e->params().at(1));
 769         ircuser->setHost(e->params().at(2));
 770         ircuser->setRealName(e->params().last());
 771     }
 772 }
 773
 774
 775 /*  RPL_WHOISSERVER -  "<nick> <server> :<server info>" */
 776 void CoreSessionEventProcessor::processIrcEvent312(IrcEvent *e)
 777 {
 778     if (!checkParamCount(e, 2))
 779         return;
 780
 781     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 782     if (ircuser)
 783         ircuser->setServer(e->params().at(1));
 784 }
 785
 786
 787 /*  RPL_WHOISOPERATOR - "<nick> :is an IRC operator" */
 788 void CoreSessionEventProcessor::processIrcEvent313(IrcEvent *e)
 789 {
 790     if (!checkParamCount(e, 1))
 791         return;
 792
 793     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 794     if (ircuser)
 795         ircuser->setIrcOperator(e->params().last());
 796 }
 797
 798
 799 /*  RPL_ENDOFWHO: "<name> :End of WHO list" */
 800 void CoreSessionEventProcessor::processIrcEvent315(IrcEvent *e)
 801 {
 802     if (!checkParamCount(e, 1))
 803         return;
 804
 805     if (coreNetwork(e)->setAutoWhoDone(e->params()[0]))
 806         e->setFlag(EventManager::Silent);
 807 }
 808
 809
 810 /*  RPL_WHOISIDLE - "<nick> <integer> :seconds idle"
 811    (real life: "<nick> <integer> <integer> :seconds idle, signon time) */
 812 void CoreSessionEventProcessor::processIrcEvent317(IrcEvent *e)
 813 {
 814     if (!checkParamCount(e, 2))
 815         return;
 816
 817     QDateTime loginTime;
 818
 819     int idleSecs = e->params()[1].toInt();
 820     if (e->params().count() > 3) { // if we have more then 3 params we have the above mentioned "real life" situation
 821         int logintime = e->params()[2].toInt();
 822         loginTime = QDateTime::fromTime_t(logintime);
 823     }
 824
 825     IrcUser *ircuser = e->network()->ircUser(e->params()[0]);
 826     if (ircuser) {
 827         ircuser->setIdleTime(e->timestamp().addSecs(-idleSecs));
 828         if (loginTime.isValid())
 829             ircuser->setLoginTime(loginTime);
 830     }
 831 }
 832
 833
 834 /* RPL_LIST -  "<channel> <# visible> :<topic>" */
 835 void CoreSessionEventProcessor::processIrcEvent322(IrcEvent *e)
 836 {
 837     if (!checkParamCount(e, 1))
 838         return;
 839
 840     QString channelName;
 841     quint32 userCount = 0;
 842     QString topic;
 843
 844     switch (e->params().count()) {
 845     case 3:
 846         topic = e->params()[2];
 847     case 2:
 848         userCount = e->params()[1].toUInt();
 849     case 1:
 850         channelName = e->params()[0];
 851     default:
 852         break;
 853     }
 854     if (coreSession()->ircListHelper()->addChannel(e->networkId(), channelName, userCount, topic))
 855         e->stop();  // consumed by IrcListHelper, so don't further process/show this event
 856 }
 857
 858
 859 /* RPL_LISTEND ":End of LIST" */
 860 void CoreSessionEventProcessor::processIrcEvent323(IrcEvent *e)
 861 {
 862     if (!checkParamCount(e, 1))
 863         return;
 864
 865     if (coreSession()->ircListHelper()->endOfChannelList(e->networkId()))
 866         e->stop();  // consumed by IrcListHelper, so don't further process/show this event
 867 }
 868
 869
 870 /* RPL_CHANNELMODEIS - "<channel> <mode> <mode params>" */
 871 void CoreSessionEventProcessor::processIrcEvent324(IrcEvent *e)
 872 {
 873     processIrcEventMode(e);
 874 }
 875
 876
 877 /*  RPL_WHOISACCOUNT: "<nick> <account> :is authed as */
 878 void CoreSessionEventProcessor::processIrcEvent330(IrcEvent *e)
 879 {
 880     if (!checkParamCount(e, 3))
 881         return;
 882
 883     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 884     if (ircuser) {
 885         ircuser->setAccount(e->params().at(1));
 886     }
 887 }
 888
 889
 890 /* RPL_NOTOPIC */
 891 void CoreSessionEventProcessor::processIrcEvent331(IrcEvent *e)
 892 {
 893     if (!checkParamCount(e, 1))
 894         return;
 895
 896     IrcChannel *chan = e->network()->ircChannel(e->params()[0]);
 897     if (chan)
 898         chan->setTopic(QString());
 899 }
 900
 901
 902 /* RPL_TOPIC */
 903 void CoreSessionEventProcessor::processIrcEvent332(IrcEvent *e)
 904 {
 905     if (!checkParamCount(e, 2))
 906         return;
 907
 908     IrcChannel *chan = e->network()->ircChannel(e->params()[0]);
 909     if (chan)
 910         chan->setTopic(e->params()[1]);
 911 }
 912
 913
 914 /*  RPL_WHOREPLY: "<channel> <user> <host> <server> <nick>
 915               ( "H" / "G" > ["*"] [ ( "@" / "+" ) ] :<hopcount> <real name>" */
 916 void CoreSessionEventProcessor::processIrcEvent352(IrcEvent *e)
 917 {
 918     if (!checkParamCount(e, 6))
 919         return;
 920
 921     QString channel = e->params()[0];
 922     IrcUser *ircuser = e->network()->ircUser(e->params()[4]);
 923     if (ircuser) {
 924         processWhoInformation(e->network(), channel, ircuser, e->params()[3], e->params()[1],
 925                 e->params()[2], e->params()[5], e->params().last().section(" ", 1));
 926     }
 927
 928     // Check if channel name has a who in progress.
 929     // If not, then check if user nick exists and has a who in progress.
 930     if (coreNetwork(e)->isAutoWhoInProgress(channel) ||
 931         (ircuser && coreNetwork(e)->isAutoWhoInProgress(ircuser->nick()))) {
 932         e->setFlag(EventManager::Silent);
 933     }
 934 }
 935
 936
 937 /* RPL_NAMREPLY */
 938 void CoreSessionEventProcessor::processIrcEvent353(IrcEvent *e)
 939 {
 940     if (!checkParamCount(e, 3))
 941         return;
 942
 943     // param[0] is either "=", "*" or "@" indicating a public, private or secret channel
 944     // we don't use this information at the time beeing
 945     QString channelname = e->params()[1];
 946
 947     IrcChannel *channel = e->network()->ircChannel(channelname);
 948     if (!channel) {
 949         qWarning() << Q_FUNC_INFO << "Received unknown target channel:" << channelname;
 950         return;
 951     }
 952
 953     QStringList nicks;
 954     QStringList modes;
 955
 956     // Cache result of multi-prefix to avoid unneeded casts and lookups with each iteration.
 957     bool _useCapMultiPrefix = coreNetwork(e)->capEnabled(IrcCap::MULTI_PREFIX);
 958
 959     foreach(QString nick, e->params()[2].split(' ', QString::SkipEmptyParts)) {
 960         QString mode;
 961
 962         if (_useCapMultiPrefix) {
 963             // If multi-prefix is enabled, all modes will be sent in NAMES replies.
 964             // :hades.arpa 353 guest = #tethys :~&@%+aji &@Attila @+alyx +KindOne Argure
 965             // See: http://ircv3.net/specs/extensions/multi-prefix-3.1.html
 966             while (e->network()->prefixes().contains(nick[0])) {
 967                 // Mode found in 1 left-most character, add it to the list.
 968                 // Note: sending multiple modes may cause a warning in older clients.
 969                 // In testing, the clients still seemed to function fine.
 970                 mode.append(e->network()->prefixToMode(nick[0]));
 971                 // Remove this mode from the nick
 972                 nick = nick.remove(0, 1);
 973             }
 974         } else if (e->network()->prefixes().contains(nick[0])) {
 975             // Multi-prefix is disabled and a mode prefix was found.
 976             mode = e->network()->prefixToMode(nick[0]);
 977             nick = nick.mid(1);
 978         }
 979
 980         // If userhost-in-names capability is enabled, the following will be
 981         // in the form "nick!user@host" rather than "nick".  This works without
 982         // special handling as the following use nickFromHost() as needed.
 983         // See: http://ircv3.net/specs/extensions/userhost-in-names-3.2.html
 984
 985         nicks << nick;
 986         modes << mode;
 987     }
 988
 989     channel->joinIrcUsers(nicks, modes);
 990 }
 991
 992
 993 /*  RPL_WHOSPCRPL: "<yournick> 152 #<channel> ~<ident> <host> <servname> <nick>
 994                     ("H"/ "G") <account> :<realname>"
 995 <channel> is * if not specific to any channel
 996 <account> is * if not logged in
 997 Follows HexChat's usage of 'whox'
 998 See https://github.com/hexchat/hexchat/blob/c874a9525c9b66f1d5ddcf6c4107d046eba7e2c5/src/common/proto-irc.c#L750
 999 And http://faerion.sourceforge.net/doc/irc/whox.var*/
1000 void CoreSessionEventProcessor::processIrcEvent354(IrcEvent *e)
1001 {
1002     // First only check if at least one parameter exists.  Otherwise, it'll stop the result from
1003     // being shown if the user chooses different parameters.
1004     if (!checkParamCount(e, 1))
1005         return;
1006
1007     if (e->params()[0].toUInt() != IrcCap::ACCOUNT_NOTIFY_WHOX_NUM) {
1008         // Ignore WHOX replies without expected number for we have no idea what fields are specified
1009         return;
1010     }
1011
1012     // Now we're fairly certain this is supposed to be an automated WHOX.  Bail out if it doesn't
1013     // match what we require - 9 parameters.
1014     if (!checkParamCount(e, 9))
1015         return;
1016
1017     QString channel = e->params()[1];
1018     IrcUser *ircuser = e->network()->ircUser(e->params()[5]);
1019     if (ircuser) {
1020         processWhoInformation(e->network(), channel, ircuser, e->params()[4], e->params()[2],
1021                 e->params()[3], e->params()[6], e->params().last());
1022         // Don't use .section(" ", 1) with WHOX replies, for there's no hopcount to trim out
1023
1024         // As part of IRCv3 account-notify, check account name
1025         // WHOX uses '0' to indicate logged-out, account-notify uses '*'
1026         QString newAccount = e->params()[7];
1027         if (newAccount != "0") {
1028             // Account logged in, set account name
1029             ircuser->setAccount(newAccount);
1030         } else {
1031             // Account logged out, set account name to logged-out
1032             ircuser->setAccount("*");
1033         }
1034     }
1035
1036     // Check if channel name has a who in progress.
1037     // If not, then check if user nick exists and has a who in progress.
1038     if (coreNetwork(e)->isAutoWhoInProgress(channel) ||
1039         (ircuser && coreNetwork(e)->isAutoWhoInProgress(ircuser->nick()))) {
1040         e->setFlag(EventManager::Silent);
1041     }
1042 }
1043
1044
1045 void CoreSessionEventProcessor::processWhoInformation (Network *net, const QString &targetChannel, IrcUser *ircUser,
1046                             const QString &server, const QString &user, const QString &host,
1047                             const QString &awayStateAndModes, const QString &realname)
1048 {
1049     ircUser->setUser(user);
1050     ircUser->setHost(host);
1051     ircUser->setServer(server);
1052     ircUser->setRealName(realname);
1053
1054     bool away = awayStateAndModes.contains("G", Qt::CaseInsensitive);
1055     ircUser->setAway(away);
1056
1057     if (net->capEnabled(IrcCap::MULTI_PREFIX)) {
1058         // If multi-prefix is enabled, all modes will be sent in WHO replies.
1059         // :kenny.chatspike.net 352 guest #test grawity broken.symlink *.chatspike.net grawity H@%+ :0 Mantas M.
1060         // See: http://ircv3.net/specs/extensions/multi-prefix-3.1.html
1061         QString uncheckedModes = awayStateAndModes;
1062         QString validModes = QString();
1063         while (!uncheckedModes.isEmpty()) {
1064             // Mode found in 1 left-most character, add it to the list
1065             if (net->prefixes().contains(uncheckedModes[0])) {
1066                 validModes.append(net->prefixToMode(uncheckedModes[0]));
1067             }
1068             // Remove this mode from the list of unchecked modes
1069             uncheckedModes = uncheckedModes.remove(0, 1);
1070         }
1071
1072         // Some IRC servers decide to not follow the spec, returning only -some- of the user
1073         // modes in WHO despite listing them all in NAMES.  For now, assume it can only add
1074         // and not take away.  *sigh*
1075         if (!validModes.isEmpty()) {
1076             if (targetChannel != "*") {
1077                 // Channel-specific modes received, apply to given channel only
1078                 IrcChannel *ircChan = net->ircChannel(targetChannel);
1079                 if (ircChan) {
1080                     // Do one mode at a time
1081                     // TODO Better way of syncing this without breaking protocol?
1082                     for (int i = 0; i < validModes.count(); ++i) {
1083                         ircChan->addUserMode(ircUser, validModes.at(i));
1084                     }
1085                 }
1086             } else {
1087                 // Modes apply to the user everywhere
1088                 ircUser->addUserModes(validModes);
1089             }
1090         }
1091     }
1092 }
1093
1094
1095 /* ERR_ERRONEUSNICKNAME */
1096 void CoreSessionEventProcessor::processIrcEvent432(IrcEventNumeric *e)
1097 {
1098     if (!checkParamCount(e, 1))
1099         return;
1100
1101     QString errnick;
1102     if (e->params().count() < 2) {
1103         // handle unreal-ircd bug, where unreal ircd doesnt supply a TARGET in ERR_ERRONEUSNICKNAME during registration phase:
1104         // nick @@@
1105         // :irc.scortum.moep.net 432  @@@ :Erroneous Nickname: Illegal characters
1106         // correct server reply:
1107         // :irc.scortum.moep.net 432 * @@@ :Erroneous Nickname: Illegal characters
1108         e->params().prepend(e->target());
1109         e->setTarget("*");
1110     }
1111     errnick = e->params()[0];
1112
1113     tryNextNick(e, errnick, true /* erroneus */);
1114 }
1115
1116
1117 /* ERR_NICKNAMEINUSE */
1118 void CoreSessionEventProcessor::processIrcEvent433(IrcEventNumeric *e)
1119 {
1120     if (!checkParamCount(e, 1))
1121         return;
1122
1123     QString errnick = e->params().first();
1124
1125     // if there is a problem while connecting to the server -> we handle it
1126     // but only if our connection has not been finished yet...
1127     if (!e->network()->currentServer().isEmpty())
1128         return;
1129
1130     tryNextNick(e, errnick);
1131 }
1132
1133
1134 /* ERR_UNAVAILRESOURCE */
1135 void CoreSessionEventProcessor::processIrcEvent437(IrcEventNumeric *e)
1136 {
1137     if (!checkParamCount(e, 1))
1138         return;
1139
1140     QString errnick = e->params().first();
1141
1142     // if there is a problem while connecting to the server -> we handle it
1143     // but only if our connection has not been finished yet...
1144     if (!e->network()->currentServer().isEmpty())
1145         return;
1146
1147     if (!e->network()->isChannelName(errnick))
1148         tryNextNick(e, errnick);
1149 }
1150
1151
1152 /* template
1153 void CoreSessionEventProcessor::processIrcEvent(IrcEvent *e) {
1154   if(!checkParamCount(e, 1))
1155     return;
1156
1157 }
1158 */
1159
1160 /* Handle signals from Netsplit objects  */
1161
1162 void CoreSessionEventProcessor::handleNetsplitJoin(Network *net,
1163     const QString &channel,
1164     const QStringList &users,
1165     const QStringList &modes,
1166     const QString &quitMessage)
1167 {
1168     IrcChannel *ircChannel = net->ircChannel(channel);
1169     if (!ircChannel) {
1170         return;
1171     }
1172     QList<IrcUser *> ircUsers;
1173     QStringList newModes = modes;
1174     QStringList newUsers = users;
1175
1176     foreach(const QString &user, users) {
1177         IrcUser *iu = net->ircUser(nickFromMask(user));
1178         if (iu)
1179             ircUsers.append(iu);
1180         else { // the user already quit
1181             int idx = users.indexOf(user);
1182             newUsers.removeAt(idx);
1183             newModes.removeAt(idx);
1184         }
1185     }
1186
1187     ircChannel->joinIrcUsers(ircUsers, newModes);
1188     NetworkSplitEvent *event = new NetworkSplitEvent(EventManager::NetworkSplitJoin, net, channel, newUsers, quitMessage);
1189     emit newEvent(event);
1190 }
1191
1192
1193 void CoreSessionEventProcessor::handleNetsplitQuit(Network *net, const QString &channel, const QStringList &users, const QString &quitMessage)
1194 {
1195     NetworkSplitEvent *event = new NetworkSplitEvent(EventManager::NetworkSplitQuit, net, channel, users, quitMessage);
1196     emit newEvent(event);
1197     foreach(QString user, users) {
1198         IrcUser *iu = net->ircUser(nickFromMask(user));
1199         if (iu)
1200             iu->quit();
1201     }
1202 }
1203
1204
1205 void CoreSessionEventProcessor::handleEarlyNetsplitJoin(Network *net, const QString &channel, const QStringList &users, const QStringList &modes)
1206 {
1207     IrcChannel *ircChannel = net->ircChannel(channel);
1208     if (!ircChannel) {
1209         qDebug() << "handleEarlyNetsplitJoin(): channel " << channel << " invalid";
1210         return;
1211     }
1212     QList<NetworkEvent *> events;
1213     QList<IrcUser *> ircUsers;
1214     QStringList newModes = modes;
1215
1216     foreach(QString user, users) {
1217         IrcUser *iu = net->updateNickFromMask(user);
1218         if (iu) {
1219             ircUsers.append(iu);
1220             // fake event for scripts that consume join events
1221             events << new IrcEvent(EventManager::IrcEventJoin, net, iu->hostmask(), QStringList() << channel);
1222         }
1223         else {
1224             newModes.removeAt(users.indexOf(user));
1225         }
1226     }
1227     ircChannel->joinIrcUsers(ircUsers, newModes);
1228     foreach(NetworkEvent *event, events) {
1229         event->setFlag(EventManager::Fake); // ignore this in here!
1230         emit newEvent(event);
1231     }
1232 }
1233
1234
1235 void CoreSessionEventProcessor::handleNetsplitFinished()
1236 {
1237     Netsplit *n = qobject_cast<Netsplit *>(sender());
1238     Q_ASSERT(n);
1239     QHash<QString, Netsplit *> splithash  = _netsplits.take(n->network());
1240     splithash.remove(splithash.key(n));
1241     if (splithash.count())
1242         _netsplits[n->network()] = splithash;
1243     n->deleteLater();
1244 }
1245
1246
1247 void CoreSessionEventProcessor::destroyNetsplits(NetworkId netId)
1248 {
1249     Network *net = coreSession()->network(netId);
1250     if (!net)
1251         return;
1252
1253     QHash<QString, Netsplit *> splits = _netsplits.take(net);
1254     qDeleteAll(splits);
1255 }
1256
1257
1258 /*******************************/
1259 /******** CTCP HANDLING ********/
1260 /*******************************/
1261
1262 void CoreSessionEventProcessor::processCtcpEvent(CtcpEvent *e)
1263 {
1264     if (e->testFlag(EventManager::Self))
1265         return;  // ignore ctcp events generated by user input
1266
1267     if (e->type() != EventManager::CtcpEvent || e->ctcpType() != CtcpEvent::Query)
1268         return;
1269
1270     handle(e->ctcpCmd(), Q_ARG(CtcpEvent *, e));
1271 }
1272
1273
1274 void CoreSessionEventProcessor::defaultHandler(const QString &ctcpCmd, CtcpEvent *e)
1275 {
1276     // This handler is only there to avoid warnings for unknown CTCPs
1277     Q_UNUSED(e);
1278     Q_UNUSED(ctcpCmd);
1279 }
1280
1281
1282 void CoreSessionEventProcessor::handleCtcpAction(CtcpEvent *e)
1283 {
1284     // This handler is only there to feed CLIENTINFO
1285     Q_UNUSED(e);
1286 }
1287
1288
1289 void CoreSessionEventProcessor::handleCtcpClientinfo(CtcpEvent *e)
1290 {
1291     QStringList supportedHandlers;
1292     foreach(QString handler, providesHandlers())
1293     supportedHandlers << handler.toUpper();
1294     qSort(supportedHandlers);
1295     e->setReply(supportedHandlers.join(" "));
1296 }
1297
1298
1299 // http://www.irchelp.org/irchelp/rfc/ctcpspec.html
1300 // http://en.wikipedia.org/wiki/Direct_Client-to-Client
1301 void CoreSessionEventProcessor::handleCtcpDcc(CtcpEvent *e)
1302 {
1303     // DCC support is unfinished, experimental and potentially dangerous, so make it opt-in
1304     if (!Quassel::isOptionSet("enable-experimental-dcc")) {
1305         quInfo() << "DCC disabled, start core with --enable-experimental-dcc if you really want to try it out";
1306         return;
1307     }
1308
1309     // normal:  SEND <filename> <ip> <port> [<filesize>]
1310     // reverse: SEND <filename> <ip> 0 <filesize> <token>
1311     QStringList params = e->param().split(' ');
1312     if (params.count()) {
1313         QString cmd = params[0].toUpper();
1314         if (cmd == "SEND") {
1315             if (params.count() < 4) {
1316                 qWarning() << "Invalid DCC SEND request:" << e;  // TODO emit proper error to client
1317                 return;
1318             }
1319             QString filename = params[1];
1320             QHostAddress address;
1321             quint16 port = params[3].toUShort();
1322             quint64 size = 0;
1323             QString numIp = params[2]; // this is either IPv4 as a 32 bit value, or IPv6 (which always contains a colon)
1324             if (numIp.contains(':')) { // IPv6
1325                 if (!address.setAddress(numIp)) {
1326                     qWarning() << "Invalid IPv6:" << numIp;
1327                     return;
1328                 }
1329             }
1330             else {
1331                 address.setAddress(numIp.toUInt());
1332             }
1333
1334             if (port == 0) { // Reverse DCC is indicated by a 0 port
1335                 emit newEvent(new MessageEvent(Message::Error, e->network(), tr("Reverse DCC SEND not supported"), e->prefix(), e->target(), Message::None, e->timestamp()));
1336                 return;
1337             }
1338             if (port < 1024) {
1339                 qWarning() << "Privileged port requested:" << port; // FIXME ask user if this is ok
1340             }
1341
1342
1343             if (params.count() > 4) { // filesize is optional
1344                 size = params[4].toULong();
1345             }
1346
1347             // TODO: check if target is the right thing to use for the partner
1348             CoreTransfer *transfer = new CoreTransfer(Transfer::Direction::Receive, e->target(), filename, address, port, size, this);
1349             coreSession()->signalProxy()->synchronize(transfer);
1350             coreSession()->transferManager()->addTransfer(transfer);
1351         }
1352         else {
1353             emit newEvent(new MessageEvent(Message::Error, e->network(), tr("DCC %1 not supported").arg(cmd), e->prefix(), e->target(), Message::None, e->timestamp()));
1354             return;
1355         }
1356     }
1357 }
1358
1359
1360 void CoreSessionEventProcessor::handleCtcpPing(CtcpEvent *e)
1361 {
1362     e->setReply(e->param().isNull() ? "" : e->param());
1363 }
1364
1365
1366 void CoreSessionEventProcessor::handleCtcpTime(CtcpEvent *e)
1367 {
1368     e->setReply(QDateTime::currentDateTime().toString());
1369 }
1370
1371
1372 void CoreSessionEventProcessor::handleCtcpVersion(CtcpEvent *e)
1373 {
1374     e->setReply(QString("Quassel IRC %1 (built on %2) -- http://www.quassel-irc.org")
1375         .arg(Quassel::buildInfo().plainVersionString).arg(Quassel::buildInfo().commitDate));
1376 }