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         // FIXME Keep track of authed user account, requires adding support to ircuser.h/cpp
 246         /*
 247         if (e->params().at(0) != "*") {
 248             // Account logged in
 249             qDebug() << "account-notify:" << ircuser->nick() << "logged in to" << e->params().at(0);
 250         } else {
 251             // Account logged out
 252             qDebug() << "account-notify:" << ircuser->nick() << "logged out";
 253         }
 254         */
 255     } else {
 256         qDebug() << "Received account-notify data for unknown user" << e->prefix();
 257     }
 258 }
 259
 260 /* IRCv3 away-notify - ":nick!user@host AWAY [:message]" */
 261 void CoreSessionEventProcessor::processIrcEventAway(IrcEvent *e)
 262 {
 263     if (!checkParamCount(e, 2))
 264         return;
 265
 266     // Nick is sent as part of parameters in order to split user/server decoding
 267     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 268     if (ircuser) {
 269         if (!e->params().at(1).isEmpty()) {
 270             ircuser->setAway(true);
 271             ircuser->setAwayMessage(e->params().at(1));
 272         } else {
 273             ircuser->setAway(false);
 274         }
 275     } else {
 276         qDebug() << "Received away-notify data for unknown user" << e->params().at(0);
 277     }
 278 }
 279
 280 /* IRCv3 chghost - ":nick!user@host CHGHOST newuser new.host.goes.here" */
 281 void CoreSessionEventProcessor::processIrcEventChghost(IrcEvent *e)
 282 {
 283     if (!checkParamCount(e, 2))
 284         return;
 285
 286     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 287     if (ircuser) {
 288         // Update with new user/hostname information.  setUser/setHost handles checking what
 289         // actually changed.
 290         ircuser->setUser(e->params().at(0));
 291         ircuser->setHost(e->params().at(1));
 292     } else {
 293         qDebug() << "Received chghost data for unknown user" << e->prefix();
 294     }
 295 }
 296
 297 void CoreSessionEventProcessor::processIrcEventInvite(IrcEvent *e)
 298 {
 299     if (checkParamCount(e, 2)) {
 300         e->network()->updateNickFromMask(e->prefix());
 301     }
 302 }
 303
 304
 305 void CoreSessionEventProcessor::processIrcEventJoin(IrcEvent *e)
 306 {
 307     if (e->testFlag(EventManager::Fake)) // generated by handleEarlyNetsplitJoin
 308         return;
 309
 310     if (!checkParamCount(e, 1))
 311         return;
 312
 313     CoreNetwork *net = coreNetwork(e);
 314     QString channel = e->params()[0];
 315     IrcUser *ircuser = net->updateNickFromMask(e->prefix());
 316
 317     if (net->capEnabled(IrcCap::EXTENDED_JOIN)) {
 318         if (!checkParamCount(e, 3))
 319             return;
 320         // If logged in, :nick!user@host JOIN #channelname accountname :Real Name
 321         // If logged out, :nick!user@host JOIN #channelname * :Real Name
 322         // See:  http://ircv3.net/specs/extensions/extended-join-3.1.html
 323         // FIXME Keep track of authed user account, requires adding support to ircuser.h/cpp
 324         ircuser->setRealName(e->params()[2]);
 325     }
 326     // Else :nick!user@host JOIN #channelname
 327
 328     bool handledByNetsplit = false;
 329     foreach(Netsplit* n, _netsplits.value(e->network())) {
 330         handledByNetsplit = n->userJoined(e->prefix(), channel);
 331         if (handledByNetsplit)
 332             break;
 333     }
 334
 335     // If using away-notify, check new users.  Works around buggy IRC servers
 336     // forgetting to send :away messages for users who join channels when away.
 337     if (net->capEnabled(IrcCap::AWAY_NOTIFY)) {
 338         net->queueAutoWhoOneshot(ircuser->nick());
 339     }
 340
 341     if (!handledByNetsplit)
 342         ircuser->joinChannel(channel);
 343     else
 344         e->setFlag(EventManager::Netsplit);
 345
 346     if (net->isMe(ircuser)) {
 347         net->setChannelJoined(channel);
 348         // FIXME use event
 349         net->putRawLine(net->serverEncode("MODE " + channel)); // we want to know the modes of the channel we just joined, so we ask politely
 350     }
 351 }
 352
 353
 354 void CoreSessionEventProcessor::lateProcessIrcEventKick(IrcEvent *e)
 355 {
 356     if (checkParamCount(e, 2)) {
 357         e->network()->updateNickFromMask(e->prefix());
 358         IrcUser *victim = e->network()->ircUser(e->params().at(1));
 359         if (victim) {
 360             victim->partChannel(e->params().at(0));
 361             //if(e->network()->isMe(victim)) e->network()->setKickedFromChannel(channel);
 362         }
 363     }
 364 }
 365
 366
 367 void CoreSessionEventProcessor::processIrcEventMode(IrcEvent *e)
 368 {
 369     if (!checkParamCount(e, 2))
 370         return;
 371
 372     if (e->network()->isChannelName(e->params().first())) {
 373         // Channel Modes
 374
 375         IrcChannel *channel = e->network()->ircChannel(e->params()[0]);
 376         if (!channel) {
 377             // we received mode information for a channel we're not in. that means probably we've just been kicked out or something like that
 378             // anyways: we don't have a place to store the data --> discard the info.
 379             return;
 380         }
 381
 382         QString modes = e->params()[1];
 383         bool add = true;
 384         int paramOffset = 2;
 385         for (int c = 0; c < modes.length(); c++) {
 386             if (modes[c] == '+') {
 387                 add = true;
 388                 continue;
 389             }
 390             if (modes[c] == '-') {
 391                 add = false;
 392                 continue;
 393             }
 394
 395             if (e->network()->prefixModes().contains(modes[c])) {
 396                 // user channel modes (op, voice, etc...)
 397                 if (paramOffset < e->params().count()) {
 398                     IrcUser *ircUser = e->network()->ircUser(e->params()[paramOffset]);
 399                     if (!ircUser) {
 400                         qWarning() << Q_FUNC_INFO << "Unknown IrcUser:" << e->params()[paramOffset];
 401                     }
 402                     else {
 403                         if (add) {
 404                             bool handledByNetsplit = false;
 405                             QHash<QString, Netsplit *> splits = _netsplits.value(e->network());
 406                             foreach(Netsplit* n, _netsplits.value(e->network())) {
 407                                 handledByNetsplit = n->userAlreadyJoined(ircUser->hostmask(), channel->name());
 408                                 if (handledByNetsplit) {
 409                                     n->addMode(ircUser->hostmask(), channel->name(), QString(modes[c]));
 410                                     break;
 411                                 }
 412                             }
 413                             if (!handledByNetsplit)
 414                                 channel->addUserMode(ircUser, QString(modes[c]));
 415                         }
 416                         else
 417                             channel->removeUserMode(ircUser, QString(modes[c]));
 418                     }
 419                 }
 420                 else {
 421                     qWarning() << "Received MODE with too few parameters:" << e->params();
 422                 }
 423                 ++paramOffset;
 424             }
 425             else {
 426                 // regular channel modes
 427                 QString value;
 428                 Network::ChannelModeType modeType = e->network()->channelModeType(modes[c]);
 429                 if (modeType == Network::A_CHANMODE || modeType == Network::B_CHANMODE || (modeType == Network::C_CHANMODE && add)) {
 430                     if (paramOffset < e->params().count()) {
 431                         value = e->params()[paramOffset];
 432                     }
 433                     else {
 434                         qWarning() << "Received MODE with too few parameters:" << e->params();
 435                     }
 436                     ++paramOffset;
 437                 }
 438
 439                 if (add)
 440                     channel->addChannelMode(modes[c], value);
 441                 else
 442                     channel->removeChannelMode(modes[c], value);
 443             }
 444         }
 445     }
 446     else {
 447         // pure User Modes
 448         IrcUser *ircUser = e->network()->newIrcUser(e->params().first());
 449         QString modeString(e->params()[1]);
 450         QString addModes;
 451         QString removeModes;
 452         bool add = false;
 453         for (int c = 0; c < modeString.count(); c++) {
 454             if (modeString[c] == '+') {
 455                 add = true;
 456                 continue;
 457             }
 458             if (modeString[c] == '-') {
 459                 add = false;
 460                 continue;
 461             }
 462             if (add)
 463                 addModes += modeString[c];
 464             else
 465                 removeModes += modeString[c];
 466         }
 467         if (!addModes.isEmpty())
 468             ircUser->addUserModes(addModes);
 469         if (!removeModes.isEmpty())
 470             ircUser->removeUserModes(removeModes);
 471
 472         if (e->network()->isMe(ircUser)) {
 473             coreNetwork(e)->updatePersistentModes(addModes, removeModes);
 474         }
 475     }
 476 }
 477
 478
 479 void CoreSessionEventProcessor::lateProcessIrcEventNick(IrcEvent *e)
 480 {
 481     if (checkParamCount(e, 1)) {
 482         IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 483         if (!ircuser) {
 484             qWarning() << Q_FUNC_INFO << "Unknown IrcUser!";
 485             return;
 486         }
 487         QString newnick = e->params().at(0);
 488         QString oldnick = ircuser->nick();
 489
 490         // the order is cruicial
 491         // otherwise the client would rename the buffer, see that the assigned ircuser doesn't match anymore
 492         // and remove the ircuser from the querybuffer leading to a wrong on/offline state
 493         ircuser->setNick(newnick);
 494         coreSession()->renameBuffer(e->networkId(), newnick, oldnick);
 495     }
 496 }
 497
 498
 499 void CoreSessionEventProcessor::lateProcessIrcEventPart(IrcEvent *e)
 500 {
 501     if (checkParamCount(e, 1)) {
 502         IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 503         if (!ircuser) {
 504             qWarning() << Q_FUNC_INFO<< "Unknown IrcUser!";
 505             return;
 506         }
 507         QString channel = e->params().at(0);
 508         ircuser->partChannel(channel);
 509         if (e->network()->isMe(ircuser))
 510             qobject_cast<CoreNetwork *>(e->network())->setChannelParted(channel);
 511     }
 512 }
 513
 514
 515 void CoreSessionEventProcessor::processIrcEventPing(IrcEvent *e)
 516 {
 517     QString param = e->params().count() ? e->params().first() : QString();
 518     // FIXME use events
 519     coreNetwork(e)->putRawLine("PONG " + coreNetwork(e)->serverEncode(param));
 520 }
 521
 522
 523 void CoreSessionEventProcessor::processIrcEventPong(IrcEvent *e)
 524 {
 525     // the server is supposed to send back what we passed as param. and we send a timestamp
 526     // but using quote and whatnought one can send arbitrary pings, so we have to do some sanity checks
 527     if (checkParamCount(e, 2)) {
 528         QString timestamp = e->params().at(1);
 529         QTime sendTime = QTime::fromString(timestamp, "hh:mm:ss.zzz");
 530         if (sendTime.isValid())
 531             e->network()->setLatency(sendTime.msecsTo(QTime::currentTime()) / 2);
 532     }
 533 }
 534
 535
 536 void CoreSessionEventProcessor::processIrcEventQuit(IrcEvent *e)
 537 {
 538     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 539     if (!ircuser)
 540         return;
 541
 542     QString msg;
 543     if (e->params().count() > 0)
 544         msg = e->params()[0];
 545
 546     // check if netsplit
 547     if (Netsplit::isNetsplit(msg)) {
 548         Netsplit *n;
 549         if (!_netsplits[e->network()].contains(msg)) {
 550             n = new Netsplit(e->network(), this);
 551             connect(n, SIGNAL(finished()), this, SLOT(handleNetsplitFinished()));
 552             connect(n, SIGNAL(netsplitJoin(Network*, QString, QStringList, QStringList, QString)),
 553                 this, SLOT(handleNetsplitJoin(Network*, QString, QStringList, QStringList, QString)));
 554             connect(n, SIGNAL(netsplitQuit(Network*, QString, QStringList, QString)),
 555                 this, SLOT(handleNetsplitQuit(Network*, QString, QStringList, QString)));
 556             connect(n, SIGNAL(earlyJoin(Network*, QString, QStringList, QStringList)),
 557                 this, SLOT(handleEarlyNetsplitJoin(Network*, QString, QStringList, QStringList)));
 558             _netsplits[e->network()].insert(msg, n);
 559         }
 560         else {
 561             n = _netsplits[e->network()][msg];
 562         }
 563         // add this user to the netsplit
 564         n->userQuit(e->prefix(), ircuser->channels(), msg);
 565         e->setFlag(EventManager::Netsplit);
 566     }
 567     // normal quit is handled in lateProcessIrcEventQuit()
 568 }
 569
 570
 571 void CoreSessionEventProcessor::lateProcessIrcEventQuit(IrcEvent *e)
 572 {
 573     if (e->testFlag(EventManager::Netsplit))
 574         return;
 575
 576     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 577     if (!ircuser)
 578         return;
 579
 580     ircuser->quit();
 581 }
 582
 583
 584 void CoreSessionEventProcessor::processIrcEventTopic(IrcEvent *e)
 585 {
 586     if (checkParamCount(e, 2)) {
 587         e->network()->updateNickFromMask(e->prefix());
 588         IrcChannel *channel = e->network()->ircChannel(e->params().at(0));
 589         if (channel)
 590             channel->setTopic(e->params().at(1));
 591     }
 592 }
 593
 594
 595 #ifdef HAVE_QCA2
 596 void CoreSessionEventProcessor::processKeyEvent(KeyEvent *e)
 597 {
 598     if (!Cipher::neededFeaturesAvailable()) {
 599         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()));
 600         return;
 601     }
 602     CoreNetwork *net = qobject_cast<CoreNetwork*>(e->network());
 603     Cipher *c = net->cipher(e->target());
 604     if (!c) // happens when there is no CoreIrcChannel for the target (i.e. never?)
 605         return;
 606
 607     if (e->exchangeType() == KeyEvent::Init) {
 608         QByteArray pubKey = c->parseInitKeyX(e->key());
 609         if (pubKey.isEmpty()) {
 610             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()));
 611             return;
 612         } else {
 613             net->setCipherKey(e->target(), c->key());
 614             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()));
 615             QList<QByteArray> p;
 616             p << net->serverEncode(e->target()) << net->serverEncode("DH1080_FINISH ")+pubKey;
 617             net->putCmd("NOTICE", p);
 618         }
 619     } else {
 620         if (c->parseFinishKeyX(e->key())) {
 621             net->setCipherKey(e->target(), c->key());
 622             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()));
 623         } else {
 624             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()));
 625         }
 626     }
 627 }
 628 #endif
 629
 630
 631 /* RPL_WELCOME */
 632 void CoreSessionEventProcessor::processIrcEvent001(IrcEventNumeric *e)
 633 {
 634     e->network()->setCurrentServer(e->prefix());
 635     e->network()->setMyNick(e->target());
 636 }
 637
 638
 639 /* RPL_ISUPPORT */
 640 // TODO Complete 005 handling, also use sensible defaults for non-sent stuff
 641 void CoreSessionEventProcessor::processIrcEvent005(IrcEvent *e)
 642 {
 643     if (!checkParamCount(e, 1))
 644         return;
 645
 646     QString key, value;
 647     for (int i = 0; i < e->params().count() - 1; i++) {
 648         QString key = e->params()[i].section("=", 0, 0);
 649         QString value = e->params()[i].section("=", 1);
 650         e->network()->addSupport(key, value);
 651     }
 652
 653     /* determine our prefixes here to get an accurate result */
 654     e->network()->determinePrefixes();
 655 }
 656
 657
 658 /* RPL_UMODEIS - "<user_modes> [<user_mode_params>]" */
 659 void CoreSessionEventProcessor::processIrcEvent221(IrcEvent *)
 660 {
 661     // TODO: save information in network object
 662 }
 663
 664
 665 /* RPL_STATSCONN - "Highest connection cout: 8000 (7999 clients)" */
 666 void CoreSessionEventProcessor::processIrcEvent250(IrcEvent *)
 667 {
 668     // TODO: save information in network object
 669 }
 670
 671
 672 /* RPL_LOCALUSERS - "Current local user: 5024  Max: 7999 */
 673 void CoreSessionEventProcessor::processIrcEvent265(IrcEvent *)
 674 {
 675     // TODO: save information in network object
 676 }
 677
 678
 679 /* RPL_GLOBALUSERS - "Current global users: 46093  Max: 47650" */
 680 void CoreSessionEventProcessor::processIrcEvent266(IrcEvent *)
 681 {
 682     // TODO: save information in network object
 683 }
 684
 685
 686 /*
 687 WHOIS-Message:
 688    Replies 311 - 313, 317 - 319 are all replies generated in response to a WHOIS message.
 689   and 301 (RPL_AWAY)
 690               "<nick> :<away message>"
 691 WHO-Message:
 692    Replies 352 and 315 paired are used to answer a WHO message.
 693
 694 WHOWAS-Message:
 695    Replies 314 and 369 are responses to a WHOWAS message.
 696
 697 */
 698
 699 /* RPL_AWAY - "<nick> :<away message>" */
 700 void CoreSessionEventProcessor::processIrcEvent301(IrcEvent *e)
 701 {
 702     if (!checkParamCount(e, 2))
 703         return;
 704
 705     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 706     if (ircuser) {
 707         ircuser->setAway(true);
 708         ircuser->setAwayMessage(e->params().at(1));
 709         //ircuser->setLastAwayMessage(now);
 710     }
 711 }
 712
 713
 714 /* RPL_UNAWAY - ":You are no longer marked as being away" */
 715 void CoreSessionEventProcessor::processIrcEvent305(IrcEvent *e)
 716 {
 717     IrcUser *me = e->network()->me();
 718     if (me)
 719         me->setAway(false);
 720
 721     if (e->network()->autoAwayActive()) {
 722         e->network()->setAutoAwayActive(false);
 723         e->setFlag(EventManager::Silent);
 724     }
 725 }
 726
 727
 728 /* RPL_NOWAWAY - ":You have been marked as being away" */
 729 void CoreSessionEventProcessor::processIrcEvent306(IrcEvent *e)
 730 {
 731     IrcUser *me = e->network()->me();
 732     if (me)
 733         me->setAway(true);
 734 }
 735
 736
 737 /* RPL_WHOISSERVICE - "<user> is registered nick" */
 738 void CoreSessionEventProcessor::processIrcEvent307(IrcEvent *e)
 739 {
 740     if (!checkParamCount(e, 1))
 741         return;
 742
 743     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 744     if (ircuser)
 745         ircuser->setWhoisServiceReply(e->params().join(" "));
 746 }
 747
 748
 749 /* RPL_SUSERHOST - "<user> is available for help." */
 750 void CoreSessionEventProcessor::processIrcEvent310(IrcEvent *e)
 751 {
 752     if (!checkParamCount(e, 1))
 753         return;
 754
 755     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 756     if (ircuser)
 757         ircuser->setSuserHost(e->params().join(" "));
 758 }
 759
 760
 761 /*  RPL_WHOISUSER - "<nick> <user> <host> * :<real name>" */
 762 void CoreSessionEventProcessor::processIrcEvent311(IrcEvent *e)
 763 {
 764     if (!checkParamCount(e, 3))
 765         return;
 766
 767     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 768     if (ircuser) {
 769         ircuser->setUser(e->params().at(1));
 770         ircuser->setHost(e->params().at(2));
 771         ircuser->setRealName(e->params().last());
 772     }
 773 }
 774
 775
 776 /*  RPL_WHOISSERVER -  "<nick> <server> :<server info>" */
 777 void CoreSessionEventProcessor::processIrcEvent312(IrcEvent *e)
 778 {
 779     if (!checkParamCount(e, 2))
 780         return;
 781
 782     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 783     if (ircuser)
 784         ircuser->setServer(e->params().at(1));
 785 }
 786
 787
 788 /*  RPL_WHOISOPERATOR - "<nick> :is an IRC operator" */
 789 void CoreSessionEventProcessor::processIrcEvent313(IrcEvent *e)
 790 {
 791     if (!checkParamCount(e, 1))
 792         return;
 793
 794     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 795     if (ircuser)
 796         ircuser->setIrcOperator(e->params().last());
 797 }
 798
 799
 800 /*  RPL_ENDOFWHO: "<name> :End of WHO list" */
 801 void CoreSessionEventProcessor::processIrcEvent315(IrcEvent *e)
 802 {
 803     if (!checkParamCount(e, 1))
 804         return;
 805
 806     if (coreNetwork(e)->setAutoWhoDone(e->params()[0]))
 807         e->setFlag(EventManager::Silent);
 808 }
 809
 810
 811 /*  RPL_WHOISIDLE - "<nick> <integer> :seconds idle"
 812    (real life: "<nick> <integer> <integer> :seconds idle, signon time) */
 813 void CoreSessionEventProcessor::processIrcEvent317(IrcEvent *e)
 814 {
 815     if (!checkParamCount(e, 2))
 816         return;
 817
 818     QDateTime loginTime;
 819
 820     int idleSecs = e->params()[1].toInt();
 821     if (e->params().count() > 3) { // if we have more then 3 params we have the above mentioned "real life" situation
 822         int logintime = e->params()[2].toInt();
 823         loginTime = QDateTime::fromTime_t(logintime);
 824     }
 825
 826     IrcUser *ircuser = e->network()->ircUser(e->params()[0]);
 827     if (ircuser) {
 828         ircuser->setIdleTime(e->timestamp().addSecs(-idleSecs));
 829         if (loginTime.isValid())
 830             ircuser->setLoginTime(loginTime);
 831     }
 832 }
 833
 834
 835 /* RPL_LIST -  "<channel> <# visible> :<topic>" */
 836 void CoreSessionEventProcessor::processIrcEvent322(IrcEvent *e)
 837 {
 838     if (!checkParamCount(e, 1))
 839         return;
 840
 841     QString channelName;
 842     quint32 userCount = 0;
 843     QString topic;
 844
 845     switch (e->params().count()) {
 846     case 3:
 847         topic = e->params()[2];
 848     case 2:
 849         userCount = e->params()[1].toUInt();
 850     case 1:
 851         channelName = e->params()[0];
 852     default:
 853         break;
 854     }
 855     if (coreSession()->ircListHelper()->addChannel(e->networkId(), channelName, userCount, topic))
 856         e->stop();  // consumed by IrcListHelper, so don't further process/show this event
 857 }
 858
 859
 860 /* RPL_LISTEND ":End of LIST" */
 861 void CoreSessionEventProcessor::processIrcEvent323(IrcEvent *e)
 862 {
 863     if (!checkParamCount(e, 1))
 864         return;
 865
 866     if (coreSession()->ircListHelper()->endOfChannelList(e->networkId()))
 867         e->stop();  // consumed by IrcListHelper, so don't further process/show this event
 868 }
 869
 870
 871 /* RPL_CHANNELMODEIS - "<channel> <mode> <mode params>" */
 872 void CoreSessionEventProcessor::processIrcEvent324(IrcEvent *e)
 873 {
 874     processIrcEventMode(e);
 875 }
 876
 877
 878 /* RPL_NOTOPIC */
 879 void CoreSessionEventProcessor::processIrcEvent331(IrcEvent *e)
 880 {
 881     if (!checkParamCount(e, 1))
 882         return;
 883
 884     IrcChannel *chan = e->network()->ircChannel(e->params()[0]);
 885     if (chan)
 886         chan->setTopic(QString());
 887 }
 888
 889
 890 /* RPL_TOPIC */
 891 void CoreSessionEventProcessor::processIrcEvent332(IrcEvent *e)
 892 {
 893     if (!checkParamCount(e, 2))
 894         return;
 895
 896     IrcChannel *chan = e->network()->ircChannel(e->params()[0]);
 897     if (chan)
 898         chan->setTopic(e->params()[1]);
 899 }
 900
 901
 902 /*  RPL_WHOREPLY: "<channel> <user> <host> <server> <nick>
 903               ( "H" / "G" > ["*"] [ ( "@" / "+" ) ] :<hopcount> <real name>" */
 904 void CoreSessionEventProcessor::processIrcEvent352(IrcEvent *e)
 905 {
 906     if (!checkParamCount(e, 6))
 907         return;
 908
 909     QString channel = e->params()[0];
 910     IrcUser *ircuser = e->network()->ircUser(e->params()[4]);
 911     if (ircuser) {
 912         ircuser->setUser(e->params()[1]);
 913         ircuser->setHost(e->params()[2]);
 914
 915         bool away = e->params()[5].contains("G", Qt::CaseInsensitive);
 916         ircuser->setAway(away);
 917         ircuser->setServer(e->params()[3]);
 918         ircuser->setRealName(e->params().last().section(" ", 1));
 919
 920         if (coreNetwork(e)->capEnabled(IrcCap::MULTI_PREFIX)) {
 921             // If multi-prefix is enabled, all modes will be sent in WHO replies.
 922             // :kenny.chatspike.net 352 guest #test grawity broken.symlink *.chatspike.net grawity H@%+ :0 Mantas M.
 923             // See: http://ircv3.net/specs/extensions/multi-prefix-3.1.html
 924             QString uncheckedModes = e->params()[5];
 925             QString validModes = QString();
 926             while (!uncheckedModes.isEmpty()) {
 927                 // Mode found in 1 left-most character, add it to the list
 928                 if (e->network()->prefixes().contains(uncheckedModes[0])) {
 929                     validModes.append(e->network()->prefixToMode(uncheckedModes[0]));
 930                 }
 931                 // Remove this mode from the list of unchecked modes
 932                 uncheckedModes = uncheckedModes.remove(0, 1);
 933             }
 934
 935             // Some IRC servers decide to not follow the spec, returning only -some- of the user
 936             // modes in WHO despite listing them all in NAMES.  For now, assume it can only add
 937             // and not take away.  *sigh*
 938             if (!validModes.isEmpty()) {
 939                 if (channel != "*") {
 940                     // Channel-specific modes received, apply to given channel only
 941                     IrcChannel *ircChan = e->network()->ircChannel(channel);
 942                     if (ircChan) {
 943                         // Do one mode at a time
 944                         // TODO Better way of syncing this without breaking protocol?
 945                         for (int i = 0; i < validModes.count(); ++i) {
 946                             ircChan->addUserMode(ircuser, validModes.at(i));
 947                         }
 948                     }
 949                 } else {
 950                     // Modes apply to the user everywhere
 951                     ircuser->addUserModes(validModes);
 952                 }
 953             }
 954         }
 955     }
 956
 957     // Check if channel name has a who in progress.
 958     // If not, then check if user nick exists and has a who in progress.
 959     if (coreNetwork(e)->isAutoWhoInProgress(channel) ||
 960         (ircuser && coreNetwork(e)->isAutoWhoInProgress(ircuser->nick()))) {
 961         e->setFlag(EventManager::Silent);
 962     }
 963 }
 964
 965
 966 /* RPL_NAMREPLY */
 967 void CoreSessionEventProcessor::processIrcEvent353(IrcEvent *e)
 968 {
 969     if (!checkParamCount(e, 3))
 970         return;
 971
 972     // param[0] is either "=", "*" or "@" indicating a public, private or secret channel
 973     // we don't use this information at the time beeing
 974     QString channelname = e->params()[1];
 975
 976     IrcChannel *channel = e->network()->ircChannel(channelname);
 977     if (!channel) {
 978         qWarning() << Q_FUNC_INFO << "Received unknown target channel:" << channelname;
 979         return;
 980     }
 981
 982     QStringList nicks;
 983     QStringList modes;
 984
 985     // Cache result of multi-prefix to avoid unneeded casts and lookups with each iteration.
 986     bool _useCapMultiPrefix = coreNetwork(e)->capEnabled(IrcCap::MULTI_PREFIX);
 987
 988     foreach(QString nick, e->params()[2].split(' ', QString::SkipEmptyParts)) {
 989         QString mode;
 990
 991         if (_useCapMultiPrefix) {
 992             // If multi-prefix is enabled, all modes will be sent in NAMES replies.
 993             // :hades.arpa 353 guest = #tethys :~&@%+aji &@Attila @+alyx +KindOne Argure
 994             // See: http://ircv3.net/specs/extensions/multi-prefix-3.1.html
 995             while (e->network()->prefixes().contains(nick[0])) {
 996                 // Mode found in 1 left-most character, add it to the list.
 997                 // Note: sending multiple modes may cause a warning in older clients.
 998                 // In testing, the clients still seemed to function fine.
 999                 mode.append(e->network()->prefixToMode(nick[0]));
1000                 // Remove this mode from the nick
1001                 nick = nick.remove(0, 1);
1002             }
1003         } else if (e->network()->prefixes().contains(nick[0])) {
1004             // Multi-prefix is disabled and a mode prefix was found.
1005             mode = e->network()->prefixToMode(nick[0]);
1006             nick = nick.mid(1);
1007         }
1008
1009         // If userhost-in-names capability is enabled, the following will be
1010         // in the form "nick!user@host" rather than "nick".  This works without
1011         // special handling as the following use nickFromHost() as needed.
1012         // See: http://ircv3.net/specs/extensions/userhost-in-names-3.2.html
1013
1014         nicks << nick;
1015         modes << mode;
1016     }
1017
1018     channel->joinIrcUsers(nicks, modes);
1019 }
1020
1021
1022 /* ERR_ERRONEUSNICKNAME */
1023 void CoreSessionEventProcessor::processIrcEvent432(IrcEventNumeric *e)
1024 {
1025     if (!checkParamCount(e, 1))
1026         return;
1027
1028     QString errnick;
1029     if (e->params().count() < 2) {
1030         // handle unreal-ircd bug, where unreal ircd doesnt supply a TARGET in ERR_ERRONEUSNICKNAME during registration phase:
1031         // nick @@@
1032         // :irc.scortum.moep.net 432  @@@ :Erroneous Nickname: Illegal characters
1033         // correct server reply:
1034         // :irc.scortum.moep.net 432 * @@@ :Erroneous Nickname: Illegal characters
1035         e->params().prepend(e->target());
1036         e->setTarget("*");
1037     }
1038     errnick = e->params()[0];
1039
1040     tryNextNick(e, errnick, true /* erroneus */);
1041 }
1042
1043
1044 /* ERR_NICKNAMEINUSE */
1045 void CoreSessionEventProcessor::processIrcEvent433(IrcEventNumeric *e)
1046 {
1047     if (!checkParamCount(e, 1))
1048         return;
1049
1050     QString errnick = e->params().first();
1051
1052     // if there is a problem while connecting to the server -> we handle it
1053     // but only if our connection has not been finished yet...
1054     if (!e->network()->currentServer().isEmpty())
1055         return;
1056
1057     tryNextNick(e, errnick);
1058 }
1059
1060
1061 /* ERR_UNAVAILRESOURCE */
1062 void CoreSessionEventProcessor::processIrcEvent437(IrcEventNumeric *e)
1063 {
1064     if (!checkParamCount(e, 1))
1065         return;
1066
1067     QString errnick = e->params().first();
1068
1069     // if there is a problem while connecting to the server -> we handle it
1070     // but only if our connection has not been finished yet...
1071     if (!e->network()->currentServer().isEmpty())
1072         return;
1073
1074     if (!e->network()->isChannelName(errnick))
1075         tryNextNick(e, errnick);
1076 }
1077
1078
1079 /* template
1080 void CoreSessionEventProcessor::processIrcEvent(IrcEvent *e) {
1081   if(!checkParamCount(e, 1))
1082     return;
1083
1084 }
1085 */
1086
1087 /* Handle signals from Netsplit objects  */
1088
1089 void CoreSessionEventProcessor::handleNetsplitJoin(Network *net,
1090     const QString &channel,
1091     const QStringList &users,
1092     const QStringList &modes,
1093     const QString &quitMessage)
1094 {
1095     IrcChannel *ircChannel = net->ircChannel(channel);
1096     if (!ircChannel) {
1097         return;
1098     }
1099     QList<IrcUser *> ircUsers;
1100     QStringList newModes = modes;
1101     QStringList newUsers = users;
1102
1103     foreach(const QString &user, users) {
1104         IrcUser *iu = net->ircUser(nickFromMask(user));
1105         if (iu)
1106             ircUsers.append(iu);
1107         else { // the user already quit
1108             int idx = users.indexOf(user);
1109             newUsers.removeAt(idx);
1110             newModes.removeAt(idx);
1111         }
1112     }
1113
1114     ircChannel->joinIrcUsers(ircUsers, newModes);
1115     NetworkSplitEvent *event = new NetworkSplitEvent(EventManager::NetworkSplitJoin, net, channel, newUsers, quitMessage);
1116     emit newEvent(event);
1117 }
1118
1119
1120 void CoreSessionEventProcessor::handleNetsplitQuit(Network *net, const QString &channel, const QStringList &users, const QString &quitMessage)
1121 {
1122     NetworkSplitEvent *event = new NetworkSplitEvent(EventManager::NetworkSplitQuit, net, channel, users, quitMessage);
1123     emit newEvent(event);
1124     foreach(QString user, users) {
1125         IrcUser *iu = net->ircUser(nickFromMask(user));
1126         if (iu)
1127             iu->quit();
1128     }
1129 }
1130
1131
1132 void CoreSessionEventProcessor::handleEarlyNetsplitJoin(Network *net, const QString &channel, const QStringList &users, const QStringList &modes)
1133 {
1134     IrcChannel *ircChannel = net->ircChannel(channel);
1135     if (!ircChannel) {
1136         qDebug() << "handleEarlyNetsplitJoin(): channel " << channel << " invalid";
1137         return;
1138     }
1139     QList<NetworkEvent *> events;
1140     QList<IrcUser *> ircUsers;
1141     QStringList newModes = modes;
1142
1143     foreach(QString user, users) {
1144         IrcUser *iu = net->updateNickFromMask(user);
1145         if (iu) {
1146             ircUsers.append(iu);
1147             // fake event for scripts that consume join events
1148             events << new IrcEvent(EventManager::IrcEventJoin, net, iu->hostmask(), QStringList() << channel);
1149         }
1150         else {
1151             newModes.removeAt(users.indexOf(user));
1152         }
1153     }
1154     ircChannel->joinIrcUsers(ircUsers, newModes);
1155     foreach(NetworkEvent *event, events) {
1156         event->setFlag(EventManager::Fake); // ignore this in here!
1157         emit newEvent(event);
1158     }
1159 }
1160
1161
1162 void CoreSessionEventProcessor::handleNetsplitFinished()
1163 {
1164     Netsplit *n = qobject_cast<Netsplit *>(sender());
1165     Q_ASSERT(n);
1166     QHash<QString, Netsplit *> splithash  = _netsplits.take(n->network());
1167     splithash.remove(splithash.key(n));
1168     if (splithash.count())
1169         _netsplits[n->network()] = splithash;
1170     n->deleteLater();
1171 }
1172
1173
1174 void CoreSessionEventProcessor::destroyNetsplits(NetworkId netId)
1175 {
1176     Network *net = coreSession()->network(netId);
1177     if (!net)
1178         return;
1179
1180     QHash<QString, Netsplit *> splits = _netsplits.take(net);
1181     qDeleteAll(splits);
1182 }
1183
1184
1185 /*******************************/
1186 /******** CTCP HANDLING ********/
1187 /*******************************/
1188
1189 void CoreSessionEventProcessor::processCtcpEvent(CtcpEvent *e)
1190 {
1191     if (e->testFlag(EventManager::Self))
1192         return;  // ignore ctcp events generated by user input
1193
1194     if (e->type() != EventManager::CtcpEvent || e->ctcpType() != CtcpEvent::Query)
1195         return;
1196
1197     handle(e->ctcpCmd(), Q_ARG(CtcpEvent *, e));
1198 }
1199
1200
1201 void CoreSessionEventProcessor::defaultHandler(const QString &ctcpCmd, CtcpEvent *e)
1202 {
1203     // This handler is only there to avoid warnings for unknown CTCPs
1204     Q_UNUSED(e);
1205     Q_UNUSED(ctcpCmd);
1206 }
1207
1208
1209 void CoreSessionEventProcessor::handleCtcpAction(CtcpEvent *e)
1210 {
1211     // This handler is only there to feed CLIENTINFO
1212     Q_UNUSED(e);
1213 }
1214
1215
1216 void CoreSessionEventProcessor::handleCtcpClientinfo(CtcpEvent *e)
1217 {
1218     QStringList supportedHandlers;
1219     foreach(QString handler, providesHandlers())
1220     supportedHandlers << handler.toUpper();
1221     qSort(supportedHandlers);
1222     e->setReply(supportedHandlers.join(" "));
1223 }
1224
1225
1226 // http://www.irchelp.org/irchelp/rfc/ctcpspec.html
1227 // http://en.wikipedia.org/wiki/Direct_Client-to-Client
1228 void CoreSessionEventProcessor::handleCtcpDcc(CtcpEvent *e)
1229 {
1230     // DCC support is unfinished, experimental and potentially dangerous, so make it opt-in
1231     if (!Quassel::isOptionSet("enable-experimental-dcc")) {
1232         quInfo() << "DCC disabled, start core with --enable-experimental-dcc if you really want to try it out";
1233         return;
1234     }
1235
1236     // normal:  SEND <filename> <ip> <port> [<filesize>]
1237     // reverse: SEND <filename> <ip> 0 <filesize> <token>
1238     QStringList params = e->param().split(' ');
1239     if (params.count()) {
1240         QString cmd = params[0].toUpper();
1241         if (cmd == "SEND") {
1242             if (params.count() < 4) {
1243                 qWarning() << "Invalid DCC SEND request:" << e;  // TODO emit proper error to client
1244                 return;
1245             }
1246             QString filename = params[1];
1247             QHostAddress address;
1248             quint16 port = params[3].toUShort();
1249             quint64 size = 0;
1250             QString numIp = params[2]; // this is either IPv4 as a 32 bit value, or IPv6 (which always contains a colon)
1251             if (numIp.contains(':')) { // IPv6
1252                 if (!address.setAddress(numIp)) {
1253                     qWarning() << "Invalid IPv6:" << numIp;
1254                     return;
1255                 }
1256             }
1257             else {
1258                 address.setAddress(numIp.toUInt());
1259             }
1260
1261             if (port == 0) { // Reverse DCC is indicated by a 0 port
1262                 emit newEvent(new MessageEvent(Message::Error, e->network(), tr("Reverse DCC SEND not supported"), e->prefix(), e->target(), Message::None, e->timestamp()));
1263                 return;
1264             }
1265             if (port < 1024) {
1266                 qWarning() << "Privileged port requested:" << port; // FIXME ask user if this is ok
1267             }
1268
1269
1270             if (params.count() > 4) { // filesize is optional
1271                 size = params[4].toULong();
1272             }
1273
1274             // TODO: check if target is the right thing to use for the partner
1275             CoreTransfer *transfer = new CoreTransfer(Transfer::Direction::Receive, e->target(), filename, address, port, size, this);
1276             coreSession()->signalProxy()->synchronize(transfer);
1277             coreSession()->transferManager()->addTransfer(transfer);
1278         }
1279         else {
1280             emit newEvent(new MessageEvent(Message::Error, e->network(), tr("DCC %1 not supported").arg(cmd), e->prefix(), e->target(), Message::None, e->timestamp()));
1281             return;
1282         }
1283     }
1284 }
1285
1286
1287 void CoreSessionEventProcessor::handleCtcpPing(CtcpEvent *e)
1288 {
1289     e->setReply(e->param().isNull() ? "" : e->param());
1290 }
1291
1292
1293 void CoreSessionEventProcessor::handleCtcpTime(CtcpEvent *e)
1294 {
1295     e->setReply(QDateTime::currentDateTime().toString());
1296 }
1297
1298
1299 void CoreSessionEventProcessor::handleCtcpVersion(CtcpEvent *e)
1300 {
1301     e->setReply(QString("Quassel IRC %1 (built on %2) -- http://www.quassel-irc.org")
1302         .arg(Quassel::buildInfo().plainVersionString).arg(Quassel::buildInfo().commitDate));
1303 }