src/core/coresessioneventprocessor.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2015 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
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   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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  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 CoreSessionEventProcessor::CoreSessionEventProcessor(CoreSession *session)
  41     : BasicHandler("handleCtcp", session),
  42     _coreSession(session)
  43 {
  44     connect(coreSession(), SIGNAL(networkDisconnected(NetworkId)), this, SLOT(destroyNetsplits(NetworkId)));
  45     connect(this, SIGNAL(newEvent(Event *)), coreSession()->eventManager(), SLOT(postEvent(Event *)));
  46 }
  47
  48
  49 bool CoreSessionEventProcessor::checkParamCount(IrcEvent *e, int minParams)
  50 {
  51     if (e->params().count() < minParams) {
  52         if (e->type() == EventManager::IrcEventNumeric) {
  53             qWarning() << "Command " << static_cast<IrcEventNumeric *>(e)->number() << " requires " << minParams << "params, got: " << e->params();
  54         }
  55         else {
  56             QString name = coreSession()->eventManager()->enumName(e->type());
  57             qWarning() << qPrintable(name) << "requires" << minParams << "params, got:" << e->params();
  58         }
  59         e->stop();
  60         return false;
  61     }
  62     return true;
  63 }
  64
  65
  66 void CoreSessionEventProcessor::tryNextNick(NetworkEvent *e, const QString &errnick, bool erroneus)
  67 {
  68     QStringList desiredNicks = coreSession()->identity(e->network()->identity())->nicks();
  69     int nextNickIdx = desiredNicks.indexOf(errnick) + 1;
  70     QString nextNick;
  71     if (nextNickIdx > 0 && desiredNicks.size() > nextNickIdx) {
  72         nextNick = desiredNicks[nextNickIdx];
  73     }
  74     else {
  75         if (erroneus) {
  76             // FIXME Make this an ErrorEvent or something like that, so it's translated in the client
  77             MessageEvent *msgEvent = new MessageEvent(Message::Error, e->network(),
  78                 tr("No free and valid nicks in nicklist found. use: /nick <othernick> to continue"),
  79                 QString(), QString(), Message::None, e->timestamp());
  80             emit newEvent(msgEvent);
  81             return;
  82         }
  83         else {
  84             nextNick = errnick + "_";
  85         }
  86     }
  87     // FIXME Use a proper output event for this
  88     coreNetwork(e)->putRawLine("NICK " + coreNetwork(e)->encodeServerString(nextNick));
  89 }
  90
  91
  92 void CoreSessionEventProcessor::processIrcEventNumeric(IrcEventNumeric *e)
  93 {
  94     switch (e->number()) {
  95     // CAP stuff
  96     case 903:
  97     case 904:
  98     case 905:
  99     case 906:
 100     case 907:
 101         qobject_cast<CoreNetwork *>(e->network())->putRawLine("CAP END");
 102         break;
 103
 104     default:
 105         break;
 106     }
 107 }
 108
 109
 110 void CoreSessionEventProcessor::processIrcEventAuthenticate(IrcEvent *e)
 111 {
 112     if (!checkParamCount(e, 1))
 113         return;
 114
 115     if (e->params().at(0) != "+") {
 116         qWarning() << "Invalid AUTHENTICATE" << e;
 117         return;
 118     }
 119
 120     CoreNetwork *net = coreNetwork(e);
 121
 122 #ifdef HAVE_SSL
 123     if (net->identityPtr()->sslCert().isNull()) {
 124 #endif
 125         QString construct = net->saslAccount();
 126         construct.append(QChar(QChar::Null));
 127         construct.append(net->saslAccount());
 128         construct.append(QChar(QChar::Null));
 129         construct.append(net->saslPassword());
 130         QByteArray saslData = QByteArray(construct.toLatin1().toBase64());
 131         saslData.prepend("AUTHENTICATE ");
 132         net->putRawLine(saslData);
 133 #ifdef HAVE_SSL
 134     } else {
 135         net->putRawLine("AUTHENTICATE +");
 136     }
 137 #endif
 138 }
 139
 140
 141 void CoreSessionEventProcessor::processIrcEventCap(IrcEvent *e)
 142 {
 143     // for SASL, there will only be a single param of 'sasl', however you can check here for
 144     // additional CAP messages (ls, multi-prefix, et cetera).
 145
 146     if (e->params().count() == 3) {
 147         if (e->params().at(1) == "NAK") {
 148             // CAP REQ sasl was denied
 149             coreNetwork(e)->putRawLine("CAP END");
 150         }
 151         else if (e->params().at(1) == "ACK") {
 152             if (e->params().at(2).startsWith("sasl")) { // Freenode (at least) sends "sasl " with a trailing space for some reason!
 153                 // FIXME use event
 154                 // if the current identity has a cert set, use SASL EXTERNAL
 155 #ifdef HAVE_SSL
 156                 if (!coreNetwork(e)->identityPtr()->sslCert().isNull()) {
 157                     coreNetwork(e)->putRawLine(coreNetwork(e)->serverEncode("AUTHENTICATE EXTERNAL"));
 158                 } else {
 159 #endif
 160                     // Only working with PLAIN atm, blowfish later
 161                     coreNetwork(e)->putRawLine(coreNetwork(e)->serverEncode("AUTHENTICATE PLAIN"));
 162 #ifdef HAVE_SSL
 163                 }
 164 #endif
 165             }
 166         }
 167     }
 168 }
 169
 170
 171 void CoreSessionEventProcessor::processIrcEventInvite(IrcEvent *e)
 172 {
 173     if (checkParamCount(e, 2)) {
 174         e->network()->updateNickFromMask(e->prefix());
 175     }
 176 }
 177
 178
 179 void CoreSessionEventProcessor::processIrcEventJoin(IrcEvent *e)
 180 {
 181     if (e->testFlag(EventManager::Fake)) // generated by handleEarlyNetsplitJoin
 182         return;
 183
 184     if (!checkParamCount(e, 1))
 185         return;
 186
 187     CoreNetwork *net = coreNetwork(e);
 188     QString channel = e->params()[0];
 189     IrcUser *ircuser = net->updateNickFromMask(e->prefix());
 190
 191     bool handledByNetsplit = false;
 192     foreach(Netsplit* n, _netsplits.value(e->network())) {
 193         handledByNetsplit = n->userJoined(e->prefix(), channel);
 194         if (handledByNetsplit)
 195             break;
 196     }
 197
 198     if (!handledByNetsplit)
 199         ircuser->joinChannel(channel);
 200     else
 201         e->setFlag(EventManager::Netsplit);
 202
 203     if (net->isMe(ircuser)) {
 204         net->setChannelJoined(channel);
 205         // FIXME use event
 206         net->putRawLine(net->serverEncode("MODE " + channel)); // we want to know the modes of the channel we just joined, so we ask politely
 207     }
 208 }
 209
 210
 211 void CoreSessionEventProcessor::lateProcessIrcEventKick(IrcEvent *e)
 212 {
 213     if (checkParamCount(e, 2)) {
 214         e->network()->updateNickFromMask(e->prefix());
 215         IrcUser *victim = e->network()->ircUser(e->params().at(1));
 216         if (victim) {
 217             victim->partChannel(e->params().at(0));
 218             //if(e->network()->isMe(victim)) e->network()->setKickedFromChannel(channel);
 219         }
 220     }
 221 }
 222
 223
 224 void CoreSessionEventProcessor::processIrcEventMode(IrcEvent *e)
 225 {
 226     if (!checkParamCount(e, 2))
 227         return;
 228
 229     if (e->network()->isChannelName(e->params().first())) {
 230         // Channel Modes
 231
 232         IrcChannel *channel = e->network()->ircChannel(e->params()[0]);
 233         if (!channel) {
 234             // we received mode information for a channel we're not in. that means probably we've just been kicked out or something like that
 235             // anyways: we don't have a place to store the data --> discard the info.
 236             return;
 237         }
 238
 239         QString modes = e->params()[1];
 240         bool add = true;
 241         int paramOffset = 2;
 242         for (int c = 0; c < modes.length(); c++) {
 243             if (modes[c] == '+') {
 244                 add = true;
 245                 continue;
 246             }
 247             if (modes[c] == '-') {
 248                 add = false;
 249                 continue;
 250             }
 251
 252             if (e->network()->prefixModes().contains(modes[c])) {
 253                 // user channel modes (op, voice, etc...)
 254                 if (paramOffset < e->params().count()) {
 255                     IrcUser *ircUser = e->network()->ircUser(e->params()[paramOffset]);
 256                     if (!ircUser) {
 257                         qWarning() << Q_FUNC_INFO << "Unknown IrcUser:" << e->params()[paramOffset];
 258                     }
 259                     else {
 260                         if (add) {
 261                             bool handledByNetsplit = false;
 262                             QHash<QString, Netsplit *> splits = _netsplits.value(e->network());
 263                             foreach(Netsplit* n, _netsplits.value(e->network())) {
 264                                 handledByNetsplit = n->userAlreadyJoined(ircUser->hostmask(), channel->name());
 265                                 if (handledByNetsplit) {
 266                                     n->addMode(ircUser->hostmask(), channel->name(), QString(modes[c]));
 267                                     break;
 268                                 }
 269                             }
 270                             if (!handledByNetsplit)
 271                                 channel->addUserMode(ircUser, QString(modes[c]));
 272                         }
 273                         else
 274                             channel->removeUserMode(ircUser, QString(modes[c]));
 275                     }
 276                 }
 277                 else {
 278                     qWarning() << "Received MODE with too few parameters:" << e->params();
 279                 }
 280                 ++paramOffset;
 281             }
 282             else {
 283                 // regular channel modes
 284                 QString value;
 285                 Network::ChannelModeType modeType = e->network()->channelModeType(modes[c]);
 286                 if (modeType == Network::A_CHANMODE || modeType == Network::B_CHANMODE || (modeType == Network::C_CHANMODE && add)) {
 287                     if (paramOffset < e->params().count()) {
 288                         value = e->params()[paramOffset];
 289                     }
 290                     else {
 291                         qWarning() << "Received MODE with too few parameters:" << e->params();
 292                     }
 293                     ++paramOffset;
 294                 }
 295
 296                 if (add)
 297                     channel->addChannelMode(modes[c], value);
 298                 else
 299                     channel->removeChannelMode(modes[c], value);
 300             }
 301         }
 302     }
 303     else {
 304         // pure User Modes
 305         IrcUser *ircUser = e->network()->newIrcUser(e->params().first());
 306         QString modeString(e->params()[1]);
 307         QString addModes;
 308         QString removeModes;
 309         bool add = false;
 310         for (int c = 0; c < modeString.count(); c++) {
 311             if (modeString[c] == '+') {
 312                 add = true;
 313                 continue;
 314             }
 315             if (modeString[c] == '-') {
 316                 add = false;
 317                 continue;
 318             }
 319             if (add)
 320                 addModes += modeString[c];
 321             else
 322                 removeModes += modeString[c];
 323         }
 324         if (!addModes.isEmpty())
 325             ircUser->addUserModes(addModes);
 326         if (!removeModes.isEmpty())
 327             ircUser->removeUserModes(removeModes);
 328
 329         if (e->network()->isMe(ircUser)) {
 330             coreNetwork(e)->updatePersistentModes(addModes, removeModes);
 331         }
 332     }
 333 }
 334
 335
 336 void CoreSessionEventProcessor::lateProcessIrcEventNick(IrcEvent *e)
 337 {
 338     if (checkParamCount(e, 1)) {
 339         IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 340         if (!ircuser) {
 341             qWarning() << Q_FUNC_INFO << "Unknown IrcUser!";
 342             return;
 343         }
 344         QString newnick = e->params().at(0);
 345         QString oldnick = ircuser->nick();
 346
 347         // the order is cruicial
 348         // otherwise the client would rename the buffer, see that the assigned ircuser doesn't match anymore
 349         // and remove the ircuser from the querybuffer leading to a wrong on/offline state
 350         ircuser->setNick(newnick);
 351         coreSession()->renameBuffer(e->networkId(), newnick, oldnick);
 352     }
 353 }
 354
 355
 356 void CoreSessionEventProcessor::lateProcessIrcEventPart(IrcEvent *e)
 357 {
 358     if (checkParamCount(e, 1)) {
 359         IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 360         if (!ircuser) {
 361             qWarning() << Q_FUNC_INFO<< "Unknown IrcUser!";
 362             return;
 363         }
 364         QString channel = e->params().at(0);
 365         ircuser->partChannel(channel);
 366         if (e->network()->isMe(ircuser))
 367             qobject_cast<CoreNetwork *>(e->network())->setChannelParted(channel);
 368     }
 369 }
 370
 371
 372 void CoreSessionEventProcessor::processIrcEventPing(IrcEvent *e)
 373 {
 374     QString param = e->params().count() ? e->params().first() : QString();
 375     // FIXME use events
 376     coreNetwork(e)->putRawLine("PONG " + coreNetwork(e)->serverEncode(param));
 377 }
 378
 379
 380 void CoreSessionEventProcessor::processIrcEventPong(IrcEvent *e)
 381 {
 382     // the server is supposed to send back what we passed as param. and we send a timestamp
 383     // but using quote and whatnought one can send arbitrary pings, so we have to do some sanity checks
 384     if (checkParamCount(e, 2)) {
 385         QString timestamp = e->params().at(1);
 386         QTime sendTime = QTime::fromString(timestamp, "hh:mm:ss.zzz");
 387         if (sendTime.isValid())
 388             e->network()->setLatency(sendTime.msecsTo(QTime::currentTime()) / 2);
 389     }
 390 }
 391
 392
 393 void CoreSessionEventProcessor::processIrcEventQuit(IrcEvent *e)
 394 {
 395     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 396     if (!ircuser)
 397         return;
 398
 399     QString msg;
 400     if (e->params().count() > 0)
 401         msg = e->params()[0];
 402
 403     // check if netsplit
 404     if (Netsplit::isNetsplit(msg)) {
 405         Netsplit *n;
 406         if (!_netsplits[e->network()].contains(msg)) {
 407             n = new Netsplit(e->network(), this);
 408             connect(n, SIGNAL(finished()), this, SLOT(handleNetsplitFinished()));
 409             connect(n, SIGNAL(netsplitJoin(Network*, QString, QStringList, QStringList, QString)),
 410                 this, SLOT(handleNetsplitJoin(Network*, QString, QStringList, QStringList, QString)));
 411             connect(n, SIGNAL(netsplitQuit(Network*, QString, QStringList, QString)),
 412                 this, SLOT(handleNetsplitQuit(Network*, QString, QStringList, QString)));
 413             connect(n, SIGNAL(earlyJoin(Network*, QString, QStringList, QStringList)),
 414                 this, SLOT(handleEarlyNetsplitJoin(Network*, QString, QStringList, QStringList)));
 415             _netsplits[e->network()].insert(msg, n);
 416         }
 417         else {
 418             n = _netsplits[e->network()][msg];
 419         }
 420         // add this user to the netsplit
 421         n->userQuit(e->prefix(), ircuser->channels(), msg);
 422         e->setFlag(EventManager::Netsplit);
 423     }
 424     // normal quit is handled in lateProcessIrcEventQuit()
 425 }
 426
 427
 428 void CoreSessionEventProcessor::lateProcessIrcEventQuit(IrcEvent *e)
 429 {
 430     if (e->testFlag(EventManager::Netsplit))
 431         return;
 432
 433     IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix());
 434     if (!ircuser)
 435         return;
 436
 437     ircuser->quit();
 438 }
 439
 440
 441 void CoreSessionEventProcessor::processIrcEventTopic(IrcEvent *e)
 442 {
 443     if (checkParamCount(e, 2)) {
 444         e->network()->updateNickFromMask(e->prefix());
 445         IrcChannel *channel = e->network()->ircChannel(e->params().at(0));
 446         if (channel)
 447             channel->setTopic(e->params().at(1));
 448     }
 449 }
 450
 451
 452 #ifdef HAVE_QCA2
 453 void CoreSessionEventProcessor::processKeyEvent(KeyEvent *e)
 454 {
 455     if (!Cipher::neededFeaturesAvailable()) {
 456         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()));
 457         return;
 458     }
 459     CoreNetwork *net = qobject_cast<CoreNetwork*>(e->network());
 460     Cipher *c = net->cipher(e->target());
 461     if (!c) // happens when there is no CoreIrcChannel for the target (i.e. never?)
 462         return;
 463
 464     if (e->exchangeType() == KeyEvent::Init) {
 465         QByteArray pubKey = c->parseInitKeyX(e->key());
 466         if (pubKey.isEmpty()) {
 467             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()));
 468             return;
 469         } else {
 470             net->setCipherKey(e->target(), c->key());
 471             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()));
 472             QList<QByteArray> p;
 473             p << net->serverEncode(e->target()) << net->serverEncode("DH1080_FINISH ")+pubKey;
 474             net->putCmd("NOTICE", p);
 475         }
 476     } else {
 477         if (c->parseFinishKeyX(e->key())) {
 478             net->setCipherKey(e->target(), c->key());
 479             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()));
 480         } else {
 481             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()));
 482         }
 483     }
 484 }
 485 #endif
 486
 487
 488 /* RPL_WELCOME */
 489 void CoreSessionEventProcessor::processIrcEvent001(IrcEventNumeric *e)
 490 {
 491     e->network()->setCurrentServer(e->prefix());
 492     e->network()->setMyNick(e->target());
 493 }
 494
 495
 496 /* RPL_ISUPPORT */
 497 // TODO Complete 005 handling, also use sensible defaults for non-sent stuff
 498 void CoreSessionEventProcessor::processIrcEvent005(IrcEvent *e)
 499 {
 500     if (!checkParamCount(e, 1))
 501         return;
 502
 503     QString key, value;
 504     for (int i = 0; i < e->params().count() - 1; i++) {
 505         QString key = e->params()[i].section("=", 0, 0);
 506         QString value = e->params()[i].section("=", 1);
 507         e->network()->addSupport(key, value);
 508     }
 509
 510     /* determine our prefixes here to get an accurate result */
 511     e->network()->determinePrefixes();
 512 }
 513
 514
 515 /* RPL_UMODEIS - "<user_modes> [<user_mode_params>]" */
 516 void CoreSessionEventProcessor::processIrcEvent221(IrcEvent *)
 517 {
 518     // TODO: save information in network object
 519 }
 520
 521
 522 /* RPL_STATSCONN - "Highest connection cout: 8000 (7999 clients)" */
 523 void CoreSessionEventProcessor::processIrcEvent250(IrcEvent *)
 524 {
 525     // TODO: save information in network object
 526 }
 527
 528
 529 /* RPL_LOCALUSERS - "Current local user: 5024  Max: 7999 */
 530 void CoreSessionEventProcessor::processIrcEvent265(IrcEvent *)
 531 {
 532     // TODO: save information in network object
 533 }
 534
 535
 536 /* RPL_GLOBALUSERS - "Current global users: 46093  Max: 47650" */
 537 void CoreSessionEventProcessor::processIrcEvent266(IrcEvent *)
 538 {
 539     // TODO: save information in network object
 540 }
 541
 542
 543 /*
 544 WHOIS-Message:
 545    Replies 311 - 313, 317 - 319 are all replies generated in response to a WHOIS message.
 546   and 301 (RPL_AWAY)
 547               "<nick> :<away message>"
 548 WHO-Message:
 549    Replies 352 and 315 paired are used to answer a WHO message.
 550
 551 WHOWAS-Message:
 552    Replies 314 and 369 are responses to a WHOWAS message.
 553
 554 */
 555
 556 /* RPL_AWAY - "<nick> :<away message>" */
 557 void CoreSessionEventProcessor::processIrcEvent301(IrcEvent *e)
 558 {
 559     if (!checkParamCount(e, 2))
 560         return;
 561
 562     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 563     if (ircuser) {
 564         ircuser->setAway(true);
 565         ircuser->setAwayMessage(e->params().at(1));
 566         //ircuser->setLastAwayMessage(now);
 567     }
 568 }
 569
 570
 571 /* RPL_UNAWAY - ":You are no longer marked as being away" */
 572 void CoreSessionEventProcessor::processIrcEvent305(IrcEvent *e)
 573 {
 574     IrcUser *me = e->network()->me();
 575     if (me)
 576         me->setAway(false);
 577
 578     if (e->network()->autoAwayActive()) {
 579         e->network()->setAutoAwayActive(false);
 580         e->setFlag(EventManager::Silent);
 581     }
 582 }
 583
 584
 585 /* RPL_NOWAWAY - ":You have been marked as being away" */
 586 void CoreSessionEventProcessor::processIrcEvent306(IrcEvent *e)
 587 {
 588     IrcUser *me = e->network()->me();
 589     if (me)
 590         me->setAway(true);
 591 }
 592
 593
 594 /* RPL_WHOISSERVICE - "<user> is registered nick" */
 595 void CoreSessionEventProcessor::processIrcEvent307(IrcEvent *e)
 596 {
 597     if (!checkParamCount(e, 1))
 598         return;
 599
 600     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 601     if (ircuser)
 602         ircuser->setWhoisServiceReply(e->params().join(" "));
 603 }
 604
 605
 606 /* RPL_SUSERHOST - "<user> is available for help." */
 607 void CoreSessionEventProcessor::processIrcEvent310(IrcEvent *e)
 608 {
 609     if (!checkParamCount(e, 1))
 610         return;
 611
 612     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 613     if (ircuser)
 614         ircuser->setSuserHost(e->params().join(" "));
 615 }
 616
 617
 618 /*  RPL_WHOISUSER - "<nick> <user> <host> * :<real name>" */
 619 void CoreSessionEventProcessor::processIrcEvent311(IrcEvent *e)
 620 {
 621     if (!checkParamCount(e, 3))
 622         return;
 623
 624     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 625     if (ircuser) {
 626         ircuser->setUser(e->params().at(1));
 627         ircuser->setHost(e->params().at(2));
 628         ircuser->setRealName(e->params().last());
 629     }
 630 }
 631
 632
 633 /*  RPL_WHOISSERVER -  "<nick> <server> :<server info>" */
 634 void CoreSessionEventProcessor::processIrcEvent312(IrcEvent *e)
 635 {
 636     if (!checkParamCount(e, 2))
 637         return;
 638
 639     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 640     if (ircuser)
 641         ircuser->setServer(e->params().at(1));
 642 }
 643
 644
 645 /*  RPL_WHOISOPERATOR - "<nick> :is an IRC operator" */
 646 void CoreSessionEventProcessor::processIrcEvent313(IrcEvent *e)
 647 {
 648     if (!checkParamCount(e, 1))
 649         return;
 650
 651     IrcUser *ircuser = e->network()->ircUser(e->params().at(0));
 652     if (ircuser)
 653         ircuser->setIrcOperator(e->params().last());
 654 }
 655
 656
 657 /*  RPL_ENDOFWHO: "<name> :End of WHO list" */
 658 void CoreSessionEventProcessor::processIrcEvent315(IrcEvent *e)
 659 {
 660     if (!checkParamCount(e, 1))
 661         return;
 662
 663     if (coreNetwork(e)->setAutoWhoDone(e->params()[0]))
 664         e->setFlag(EventManager::Silent);
 665 }
 666
 667
 668 /*  RPL_WHOISIDLE - "<nick> <integer> :seconds idle"
 669    (real life: "<nick> <integer> <integer> :seconds idle, signon time) */
 670 void CoreSessionEventProcessor::processIrcEvent317(IrcEvent *e)
 671 {
 672     if (!checkParamCount(e, 2))
 673         return;
 674
 675     QDateTime loginTime;
 676
 677     int idleSecs = e->params()[1].toInt();
 678     if (e->params().count() > 3) { // if we have more then 3 params we have the above mentioned "real life" situation
 679         int logintime = e->params()[2].toInt();
 680         loginTime = QDateTime::fromTime_t(logintime);
 681     }
 682
 683     IrcUser *ircuser = e->network()->ircUser(e->params()[0]);
 684     if (ircuser) {
 685         ircuser->setIdleTime(e->timestamp().addSecs(-idleSecs));
 686         if (loginTime.isValid())
 687             ircuser->setLoginTime(loginTime);
 688     }
 689 }
 690
 691
 692 /* RPL_LIST -  "<channel> <# visible> :<topic>" */
 693 void CoreSessionEventProcessor::processIrcEvent322(IrcEvent *e)
 694 {
 695     if (!checkParamCount(e, 1))
 696         return;
 697
 698     QString channelName;
 699     quint32 userCount = 0;
 700     QString topic;
 701
 702     switch (e->params().count()) {
 703     case 3:
 704         topic = e->params()[2];
 705     case 2:
 706         userCount = e->params()[1].toUInt();
 707     case 1:
 708         channelName = e->params()[0];
 709     default:
 710         break;
 711     }
 712     if (coreSession()->ircListHelper()->addChannel(e->networkId(), channelName, userCount, topic))
 713         e->stop();  // consumed by IrcListHelper, so don't further process/show this event
 714 }
 715
 716
 717 /* RPL_LISTEND ":End of LIST" */
 718 void CoreSessionEventProcessor::processIrcEvent323(IrcEvent *e)
 719 {
 720     if (!checkParamCount(e, 1))
 721         return;
 722
 723     if (coreSession()->ircListHelper()->endOfChannelList(e->networkId()))
 724         e->stop();  // consumed by IrcListHelper, so don't further process/show this event
 725 }
 726
 727
 728 /* RPL_CHANNELMODEIS - "<channel> <mode> <mode params>" */
 729 void CoreSessionEventProcessor::processIrcEvent324(IrcEvent *e)
 730 {
 731     processIrcEventMode(e);
 732 }
 733
 734
 735 /* RPL_NOTOPIC */
 736 void CoreSessionEventProcessor::processIrcEvent331(IrcEvent *e)
 737 {
 738     if (!checkParamCount(e, 1))
 739         return;
 740
 741     IrcChannel *chan = e->network()->ircChannel(e->params()[0]);
 742     if (chan)
 743         chan->setTopic(QString());
 744 }
 745
 746
 747 /* RPL_TOPIC */
 748 void CoreSessionEventProcessor::processIrcEvent332(IrcEvent *e)
 749 {
 750     if (!checkParamCount(e, 2))
 751         return;
 752
 753     IrcChannel *chan = e->network()->ircChannel(e->params()[0]);
 754     if (chan)
 755         chan->setTopic(e->params()[1]);
 756 }
 757
 758
 759 /*  RPL_WHOREPLY: "<channel> <user> <host> <server> <nick>
 760               ( "H" / "G" > ["*"] [ ( "@" / "+" ) ] :<hopcount> <real name>" */
 761 void CoreSessionEventProcessor::processIrcEvent352(IrcEvent *e)
 762 {
 763     if (!checkParamCount(e, 6))
 764         return;
 765
 766     QString channel = e->params()[0];
 767     IrcUser *ircuser = e->network()->ircUser(e->params()[4]);
 768     if (ircuser) {
 769         ircuser->setUser(e->params()[1]);
 770         ircuser->setHost(e->params()[2]);
 771
 772         bool away = e->params()[5].startsWith("G");
 773         ircuser->setAway(away);
 774         ircuser->setServer(e->params()[3]);
 775         ircuser->setRealName(e->params().last().section(" ", 1));
 776     }
 777
 778     if (coreNetwork(e)->isAutoWhoInProgress(channel))
 779         e->setFlag(EventManager::Silent);
 780 }
 781
 782
 783 /* RPL_NAMREPLY */
 784 void CoreSessionEventProcessor::processIrcEvent353(IrcEvent *e)
 785 {
 786     if (!checkParamCount(e, 3))
 787         return;
 788
 789     // param[0] is either "=", "*" or "@" indicating a public, private or secret channel
 790     // we don't use this information at the time beeing
 791     QString channelname = e->params()[1];
 792
 793     IrcChannel *channel = e->network()->ircChannel(channelname);
 794     if (!channel) {
 795         qWarning() << Q_FUNC_INFO << "Received unknown target channel:" << channelname;
 796         return;
 797     }
 798
 799     QStringList nicks;
 800     QStringList modes;
 801
 802     foreach(QString nick, e->params()[2].split(' ', QString::SkipEmptyParts)) {
 803         QString mode;
 804
 805         if (e->network()->prefixes().contains(nick[0])) {
 806             mode = e->network()->prefixToMode(nick[0]);
 807             nick = nick.mid(1);
 808         }
 809
 810         nicks << nick;
 811         modes << mode;
 812     }
 813
 814     channel->joinIrcUsers(nicks, modes);
 815 }
 816
 817
 818 /* ERR_ERRONEUSNICKNAME */
 819 void CoreSessionEventProcessor::processIrcEvent432(IrcEventNumeric *e)
 820 {
 821     if (!checkParamCount(e, 1))
 822         return;
 823
 824     QString errnick;
 825     if (e->params().count() < 2) {
 826         // handle unreal-ircd bug, where unreal ircd doesnt supply a TARGET in ERR_ERRONEUSNICKNAME during registration phase:
 827         // nick @@@
 828         // :irc.scortum.moep.net 432  @@@ :Erroneous Nickname: Illegal characters
 829         // correct server reply:
 830         // :irc.scortum.moep.net 432 * @@@ :Erroneous Nickname: Illegal characters
 831         e->params().prepend(e->target());
 832         e->setTarget("*");
 833     }
 834     errnick = e->params()[0];
 835
 836     tryNextNick(e, errnick, true /* erroneus */);
 837 }
 838
 839
 840 /* ERR_NICKNAMEINUSE */
 841 void CoreSessionEventProcessor::processIrcEvent433(IrcEventNumeric *e)
 842 {
 843     if (!checkParamCount(e, 1))
 844         return;
 845
 846     QString errnick = e->params().first();
 847
 848     // if there is a problem while connecting to the server -> we handle it
 849     // but only if our connection has not been finished yet...
 850     if (!e->network()->currentServer().isEmpty())
 851         return;
 852
 853     tryNextNick(e, errnick);
 854 }
 855
 856
 857 /* ERR_UNAVAILRESOURCE */
 858 void CoreSessionEventProcessor::processIrcEvent437(IrcEventNumeric *e)
 859 {
 860     if (!checkParamCount(e, 1))
 861         return;
 862
 863     QString errnick = e->params().first();
 864
 865     // if there is a problem while connecting to the server -> we handle it
 866     // but only if our connection has not been finished yet...
 867     if (!e->network()->currentServer().isEmpty())
 868         return;
 869
 870     if (!e->network()->isChannelName(errnick))
 871         tryNextNick(e, errnick);
 872 }
 873
 874
 875 /* template
 876 void CoreSessionEventProcessor::processIrcEvent(IrcEvent *e) {
 877   if(!checkParamCount(e, 1))
 878     return;
 879
 880 }
 881 */
 882
 883 /* Handle signals from Netsplit objects  */
 884
 885 void CoreSessionEventProcessor::handleNetsplitJoin(Network *net,
 886     const QString &channel,
 887     const QStringList &users,
 888     const QStringList &modes,
 889     const QString &quitMessage)
 890 {
 891     IrcChannel *ircChannel = net->ircChannel(channel);
 892     if (!ircChannel) {
 893         return;
 894     }
 895     QList<IrcUser *> ircUsers;
 896     QStringList newModes = modes;
 897     QStringList newUsers = users;
 898
 899     foreach(const QString &user, users) {
 900         IrcUser *iu = net->ircUser(nickFromMask(user));
 901         if (iu)
 902             ircUsers.append(iu);
 903         else { // the user already quit
 904             int idx = users.indexOf(user);
 905             newUsers.removeAt(idx);
 906             newModes.removeAt(idx);
 907         }
 908     }
 909
 910     ircChannel->joinIrcUsers(ircUsers, newModes);
 911     NetworkSplitEvent *event = new NetworkSplitEvent(EventManager::NetworkSplitJoin, net, channel, newUsers, quitMessage);
 912     emit newEvent(event);
 913 }
 914
 915
 916 void CoreSessionEventProcessor::handleNetsplitQuit(Network *net, const QString &channel, const QStringList &users, const QString &quitMessage)
 917 {
 918     NetworkSplitEvent *event = new NetworkSplitEvent(EventManager::NetworkSplitQuit, net, channel, users, quitMessage);
 919     emit newEvent(event);
 920     foreach(QString user, users) {
 921         IrcUser *iu = net->ircUser(nickFromMask(user));
 922         if (iu)
 923             iu->quit();
 924     }
 925 }
 926
 927
 928 void CoreSessionEventProcessor::handleEarlyNetsplitJoin(Network *net, const QString &channel, const QStringList &users, const QStringList &modes)
 929 {
 930     IrcChannel *ircChannel = net->ircChannel(channel);
 931     if (!ircChannel) {
 932         qDebug() << "handleEarlyNetsplitJoin(): channel " << channel << " invalid";
 933         return;
 934     }
 935     QList<NetworkEvent *> events;
 936     QList<IrcUser *> ircUsers;
 937     QStringList newModes = modes;
 938
 939     foreach(QString user, users) {
 940         IrcUser *iu = net->updateNickFromMask(user);
 941         if (iu) {
 942             ircUsers.append(iu);
 943             // fake event for scripts that consume join events
 944             events << new IrcEvent(EventManager::IrcEventJoin, net, iu->hostmask(), QStringList() << channel);
 945         }
 946         else {
 947             newModes.removeAt(users.indexOf(user));
 948         }
 949     }
 950     ircChannel->joinIrcUsers(ircUsers, newModes);
 951     foreach(NetworkEvent *event, events) {
 952         event->setFlag(EventManager::Fake); // ignore this in here!
 953         emit newEvent(event);
 954     }
 955 }
 956
 957
 958 void CoreSessionEventProcessor::handleNetsplitFinished()
 959 {
 960     Netsplit *n = qobject_cast<Netsplit *>(sender());
 961     Q_ASSERT(n);
 962     QHash<QString, Netsplit *> splithash  = _netsplits.take(n->network());
 963     splithash.remove(splithash.key(n));
 964     if (splithash.count())
 965         _netsplits[n->network()] = splithash;
 966     n->deleteLater();
 967 }
 968
 969
 970 void CoreSessionEventProcessor::destroyNetsplits(NetworkId netId)
 971 {
 972     Network *net = coreSession()->network(netId);
 973     if (!net)
 974         return;
 975
 976     QHash<QString, Netsplit *> splits = _netsplits.take(net);
 977     qDeleteAll(splits);
 978 }
 979
 980
 981 /*******************************/
 982 /******** CTCP HANDLING ********/
 983 /*******************************/
 984
 985 void CoreSessionEventProcessor::processCtcpEvent(CtcpEvent *e)
 986 {
 987     if (e->testFlag(EventManager::Self))
 988         return;  // ignore ctcp events generated by user input
 989
 990     if (e->type() != EventManager::CtcpEvent || e->ctcpType() != CtcpEvent::Query)
 991         return;
 992
 993     handle(e->ctcpCmd(), Q_ARG(CtcpEvent *, e));
 994 }
 995
 996
 997 void CoreSessionEventProcessor::defaultHandler(const QString &ctcpCmd, CtcpEvent *e)
 998 {
 999     // This handler is only there to avoid warnings for unknown CTCPs
1000     Q_UNUSED(e);
1001     Q_UNUSED(ctcpCmd);
1002 }
1003
1004
1005 void CoreSessionEventProcessor::handleCtcpAction(CtcpEvent *e)
1006 {
1007     // This handler is only there to feed CLIENTINFO
1008     Q_UNUSED(e);
1009 }
1010
1011
1012 void CoreSessionEventProcessor::handleCtcpClientinfo(CtcpEvent *e)
1013 {
1014     QStringList supportedHandlers;
1015     foreach(QString handler, providesHandlers())
1016     supportedHandlers << handler.toUpper();
1017     qSort(supportedHandlers);
1018     e->setReply(supportedHandlers.join(" "));
1019 }
1020
1021
1022 // http://www.irchelp.org/irchelp/rfc/ctcpspec.html
1023 // http://en.wikipedia.org/wiki/Direct_Client-to-Client
1024 void CoreSessionEventProcessor::handleCtcpDcc(CtcpEvent *e)
1025 {
1026     // DCC support is unfinished, experimental and potentially dangerous, so make it opt-in
1027     if (!Quassel::isOptionSet("enable-experimental-dcc")) {
1028         quInfo() << "DCC disabled, start core with --enable-experimental-dcc if you really want to try it out";
1029         return;
1030     }
1031
1032     // normal:  SEND <filename> <ip> <port> [<filesize>]
1033     // reverse: SEND <filename> <ip> 0 <filesize> <token>
1034     QStringList params = e->param().split(' ');
1035     if (params.count()) {
1036         QString cmd = params[0].toUpper();
1037         if (cmd == "SEND") {
1038             if (params.count() < 4) {
1039                 qWarning() << "Invalid DCC SEND request:" << e;  // TODO emit proper error to client
1040                 return;
1041             }
1042             QString filename = params[1];
1043             QHostAddress address;
1044             quint16 port = params[3].toUShort();
1045             quint64 size = 0;
1046             QString numIp = params[2]; // this is either IPv4 as a 32 bit value, or IPv6 (which always contains a colon)
1047             if (numIp.contains(':')) { // IPv6
1048                 if (!address.setAddress(numIp)) {
1049                     qWarning() << "Invalid IPv6:" << numIp;
1050                     return;
1051                 }
1052             }
1053             else {
1054                 address.setAddress(numIp.toUInt());
1055             }
1056
1057             if (port == 0) { // Reverse DCC is indicated by a 0 port
1058                 emit newEvent(new MessageEvent(Message::Error, e->network(), tr("Reverse DCC SEND not supported"), e->prefix(), e->target(), Message::None, e->timestamp()));
1059                 return;
1060             }
1061             if (port < 1024) {
1062                 qWarning() << "Privileged port requested:" << port; // FIXME ask user if this is ok
1063             }
1064
1065
1066             if (params.count() > 4) { // filesize is optional
1067                 size = params[4].toULong();
1068             }
1069
1070             // TODO: check if target is the right thing to use for the partner
1071             CoreTransfer *transfer = new CoreTransfer(Transfer::Receive, e->target(), filename, address, port, size, this);
1072             coreSession()->signalProxy()->synchronize(transfer);
1073             coreSession()->transferManager()->addTransfer(transfer);
1074         }
1075         else {
1076             emit newEvent(new MessageEvent(Message::Error, e->network(), tr("DCC %1 not supported").arg(cmd), e->prefix(), e->target(), Message::None, e->timestamp()));
1077             return;
1078         }
1079     }
1080 }
1081
1082
1083 void CoreSessionEventProcessor::handleCtcpPing(CtcpEvent *e)
1084 {
1085     e->setReply(e->param().isNull() ? "" : e->param());
1086 }
1087
1088
1089 void CoreSessionEventProcessor::handleCtcpTime(CtcpEvent *e)
1090 {
1091     e->setReply(QDateTime::currentDateTime().toString());
1092 }
1093
1094
1095 void CoreSessionEventProcessor::handleCtcpVersion(CtcpEvent *e)
1096 {
1097     e->setReply(QString("Quassel IRC %1 (built on %2) -- http://www.quassel-irc.org")
1098         .arg(Quassel::buildInfo().plainVersionString).arg(Quassel::buildInfo().commitDate));
1099 }