1 /***************************************************************************
2 * Copyright (C) 2005-2020 by the Quassel Project *
3 * devel@quassel-irc.org *
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. *
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. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
21 #include "coresessioneventprocessor.h"
25 #include "coreirclisthelper.h"
26 #include "corenetwork.h"
27 #include "coresession.h"
28 #include "coretransfer.h"
29 #include "coretransfermanager.h"
30 #include "ctcpevent.h"
33 #include "messageevent.h"
38 # include "keyevent.h"
44 CoreSessionEventProcessor::CoreSessionEventProcessor(CoreSession* session)
45 : BasicHandler("handleCtcp", session)
46 , _coreSession(session)
48 connect(coreSession(), &CoreSession::networkDisconnected, this, &CoreSessionEventProcessor::destroyNetsplits);
49 connect(this, &CoreSessionEventProcessor::newEvent, coreSession()->eventManager(), &EventManager::postEvent);
52 bool CoreSessionEventProcessor::checkParamCount(IrcEvent* e, int minParams)
54 if (e->params().count() < minParams) {
55 if (e->type() == EventManager::IrcEventNumeric) {
56 qWarning() << "Command " << static_cast<IrcEventNumeric*>(e)->number() << " requires " << minParams
57 << "params, got: " << e->params();
60 QString name = coreSession()->eventManager()->enumName(e->type());
61 qWarning() << qPrintable(name) << "requires" << minParams << "params, got:" << e->params();
69 void CoreSessionEventProcessor::tryNextNick(NetworkEvent* e, const QString& errnick, bool erroneus)
71 QStringList desiredNicks = coreSession()->identity(e->network()->identity())->nicks();
72 int nextNickIdx = desiredNicks.indexOf(errnick) + 1;
74 if (nextNickIdx > 0 && desiredNicks.size() > nextNickIdx) {
75 nextNick = desiredNicks[nextNickIdx];
79 // FIXME Make this an ErrorEvent or something like that, so it's translated in the client
80 MessageEvent* msgEvent = new MessageEvent(Message::Error,
82 tr("No free and valid nicks in nicklist found. use: /nick <othernick> to continue"),
87 emit newEvent(msgEvent);
91 nextNick = errnick + "_";
94 // FIXME Use a proper output event for this
95 coreNetwork(e)->putRawLine("NICK " + coreNetwork(e)->encodeServerString(nextNick));
98 void CoreSessionEventProcessor::processIrcEventNumeric(IrcEventNumeric* e)
100 switch (e->number()) {
101 // SASL authentication replies
102 // See: http://ircv3.net/specs/extensions/sasl-3.1.html
104 // case 900: // RPL_LOGGEDIN
105 // case 901: // RPL_LOGGEDOUT
106 // Don't use 900 or 901 for updating the local hostmask. Unreal 3.2 gives it as the IP address
107 // even when cloaked.
108 // Every other reply should result in moving on
109 // TODO Handle errors to stop connection if appropriate
110 case 902: // ERR_NICKLOCKED
111 case 903: // RPL_SASLSUCCESS
112 case 904: // ERR_SASLFAIL
113 case 905: // ERR_SASLTOOLONG
114 case 906: // ERR_SASLABORTED
115 case 907: // ERR_SASLALREADY
116 // Move on to the next capability
117 coreNetwork(e)->sendNextCap();
125 void CoreSessionEventProcessor::processIrcEventAuthenticate(IrcEvent* e)
127 if (!checkParamCount(e, 1))
130 if (e->params().at(0) != "+") {
131 qWarning() << "Invalid AUTHENTICATE" << e;
135 CoreNetwork* net = coreNetwork(e);
137 if (net->identityPtr()->sslCert().isNull()) {
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);
148 net->putRawLine("AUTHENTICATE +");
152 void CoreSessionEventProcessor::processIrcEventCap(IrcEvent* e)
154 // Handle capability negotiation
155 // See: http://ircv3.net/specs/core/capability-negotiation-3.2.html
156 // And: http://ircv3.net/specs/core/capability-negotiation-3.1.html
158 // All commands require at least 2 parameters
159 if (!checkParamCount(e, 2))
162 CoreNetwork* coreNet = coreNetwork(e);
163 QString capCommand = e->params().at(1).trimmed().toUpper();
164 if (capCommand == "LS" || capCommand == "NEW") {
165 // Either we've gotten a list of capabilities, or new capabilities we may want
166 // Server: CAP * LS * :multi-prefix extended-join account-notify batch invite-notify tls
167 // Server: CAP * LS * :cap-notify server-time example.org/dummy-cap=dummyvalue example.org/second-dummy-cap
168 // Server: CAP * LS :userhost-in-names sasl=EXTERNAL,DH-AES,DH-BLOWFISH,ECDSA-NIST256P-CHALLENGE,PLAIN
169 bool capListFinished;
170 QStringList availableCaps;
171 if (e->params().count() == 4) {
172 // Middle of multi-line reply, ignore the asterisk
173 capListFinished = false;
174 availableCaps = e->params().at(3).split(' ');
178 capListFinished = true;
179 if (e->params().count() >= 3) {
180 // Some capabilities are specified, add them
181 availableCaps = e->params().at(2).split(' ');
184 // No capabilities available, add an empty list
185 availableCaps = QStringList();
188 // Sort capabilities before requesting for consistency among networks. This may avoid
189 // unexpected cases when some networks offer capabilities in a different order than
190 // others. It also looks nicer in logs. Not required.
191 availableCaps.sort();
192 // Store what capabilities are available
193 QString availableCapName, availableCapValue;
194 for (int i = 0; i < availableCaps.count(); ++i) {
195 // Capability may include values, e.g. CAP * LS :multi-prefix sasl=EXTERNAL
196 // Capability name comes before the first '='. If no '=' exists, this gets the
197 // whole string instead.
198 availableCapName = availableCaps[i].section('=', 0, 0).trimmed();
199 // Some capabilities include multiple key=value pairs in the listing,
200 // e.g. "sts=duration=31536000,port=6697"
201 // Include everything after the first equal sign as part of the value. If no '='
202 // exists, this gets an empty string.
203 availableCapValue = availableCaps[i].section('=', 1).trimmed();
204 // Only add the capability if it's non-empty
205 if (!availableCapName.isEmpty()) {
206 coreNet->addCap(availableCapName, availableCapValue);
210 // Begin capability requests when capability listing complete
212 coreNet->beginCapNegotiation();
214 else if (capCommand == "ACK") {
215 // CAP ACK requires at least 3 parameters (no empty response allowed)
216 if (!checkParamCount(e, 3)) {
217 // If an invalid reply is sent, try to continue rather than getting stuck.
218 coreNet->sendNextCap();
222 // Server: CAP * ACK :multi-prefix sasl
223 // Got the capabilities we want, handle as needed.
224 QStringList acceptedCaps;
225 acceptedCaps = e->params().at(2).split(' ');
227 // Store what capability was acknowledged
230 // Keep track of whether or not a capability requires further configuration. Due to queuing
231 // logic in CoreNetwork::queueCap(), this shouldn't ever happen when more than one
232 // capability is requested, but it's better to handle edge cases or faulty servers.
233 bool capsRequireConfiguration = false;
235 for (int i = 0; i < acceptedCaps.count(); ++i) {
236 acceptedCap = acceptedCaps[i].trimmed().toLower();
237 // Mark this cap as accepted
238 coreNet->acknowledgeCap(acceptedCap);
239 if (!capsRequireConfiguration && coreNet->capsRequiringConfiguration.contains(acceptedCap)) {
240 capsRequireConfiguration = true;
241 // Some capabilities (e.g. SASL) require further messages to finish. If so, do NOT
242 // send the next capability; it will be handled elsewhere in CoreNetwork.
243 // Otherwise, allow moving on to the next capability.
247 if (!capsRequireConfiguration) {
248 // No additional configuration required, move on to the next capability
249 coreNet->sendNextCap();
252 else if (capCommand == "NAK" || capCommand == "DEL") {
253 // CAP NAK/DEL require at least 3 parameters (no empty response allowed)
254 if (!checkParamCount(e, 3)) {
255 if (capCommand == "NAK") {
256 // If an invalid reply is sent, try to continue rather than getting stuck. This
257 // only matters for denied caps, not removed caps.
258 coreNet->sendNextCap();
263 // Either something went wrong with the capabilities, or they are no longer supported
265 // Server: CAP * NAK :multi-prefix sasl
267 // Server: :irc.example.com CAP modernclient DEL :multi-prefix sasl
268 // CAP NAK and CAP DEL replies are always single-line
270 QStringList removedCaps;
271 removedCaps = e->params().at(2).split(' ');
273 // Store the capabilities that were denied or removed
275 for (int i = 0; i < removedCaps.count(); ++i) {
276 removedCap = removedCaps[i].trimmed().toLower();
277 // Mark this cap as removed.
278 // For CAP DEL, removes it from use.
279 // For CAP NAK when received before negotiation enabled these capabilities, removeCap()
280 // should do nothing. This merely guards against non-spec servers sending an
281 // unsolicited CAP ACK then later removing that capability.
282 coreNet->removeCap(removedCap);
285 if (capCommand == "NAK") {
286 // Continue negotiation only if this is the result of denied caps, not removed caps
287 if (removedCaps.count() > 1) {
288 // We've received a CAP NAK reply to multiple capabilities at once. Unfortunately,
289 // we don't know which capability failed and which ones are valid to re-request, so
290 // individually retry each capability from the failed bundle.
291 // See CoreNetwork::retryCapsIndividually() for more details.
292 coreNet->retryCapsIndividually();
293 // Still need to call sendNextCap() to carry on.
295 // Carry on with negotiation
296 coreNet->sendNextCap();
301 /* IRCv3 account-notify
302 * Log in: ":nick!user@host ACCOUNT accountname"
303 * Log out: ":nick!user@host ACCOUNT *" */
304 void CoreSessionEventProcessor::processIrcEventAccount(IrcEvent* e)
306 if (!checkParamCount(e, 1))
309 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
311 // WHOX uses '0' to indicate logged-out, account-notify and extended-join uses '*'.
312 // As '*' is used internally to represent logged-out, no need to handle that differently.
313 ircuser->setAccount(e->params().at(0));
316 qDebug() << "Received account-notify data for unknown user" << e->prefix();
320 /* IRCv3 away-notify - ":nick!user@host AWAY [:message]" */
321 void CoreSessionEventProcessor::processIrcEventAway(IrcEvent* e)
323 if (!checkParamCount(e, 1))
325 // Don't use checkParamCount(e, 2) since the message is optional. Some servers respond in a way
326 // that it counts as two parameters, but we shouldn't rely on that.
328 // Nick is sent as part of parameters in order to split user/server decoding
329 IrcUser* ircuser = e->network()->ircUser(e->params().at(0));
331 // If two parameters are sent -and- the second parameter isn't empty, then user is away.
332 // Otherwise, mark them as not away.
333 if (e->params().count() >= 2 && !e->params().at(1).isEmpty()) {
334 ircuser->setAway(true);
335 ircuser->setAwayMessage(e->params().at(1));
338 ircuser->setAway(false);
342 qDebug() << "Received away-notify data for unknown user" << e->params().at(0);
346 /* IRCv3 chghost - ":nick!user@host CHGHOST newuser new.host.goes.here" */
347 void CoreSessionEventProcessor::processIrcEventChghost(IrcEvent* e)
349 if (!checkParamCount(e, 2))
352 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
354 // Update with new user/hostname information. setUser/setHost handles checking what
356 ircuser->setUser(e->params().at(0));
357 ircuser->setHost(e->params().at(1));
360 qDebug() << "Received chghost data for unknown user" << e->prefix();
364 void CoreSessionEventProcessor::processIrcEventInvite(IrcEvent* e)
366 if (checkParamCount(e, 2)) {
367 e->network()->updateNickFromMask(e->prefix());
371 /* JOIN: ":<nick!user@host> JOIN <channel>" */
372 void CoreSessionEventProcessor::processIrcEventJoin(IrcEvent* e)
374 if (e->testFlag(EventManager::Fake)) // generated by handleEarlyNetsplitJoin
377 if (!checkParamCount(e, 1))
380 CoreNetwork* net = coreNetwork(e);
381 QString channel = e->params()[0];
382 IrcUser* ircuser = net->updateNickFromMask(e->prefix());
384 if (net->capEnabled(IrcCap::EXTENDED_JOIN)) {
385 if (e->params().count() < 3) {
386 // Some IRC servers don't send extended-join events in all situations. Rather than
387 // ignore the join entirely, treat it as a regular join with a debug-level log entry.
388 // See: https://github.com/inspircd/inspircd/issues/821
389 qDebug() << "extended-join requires 3 params, got:" << e->params()
390 << ", handling as a "
394 // If logged in, :nick!user@host JOIN #channelname accountname :Real Name
395 // If logged out, :nick!user@host JOIN #channelname * :Real Name
396 // See: http://ircv3.net/specs/extensions/extended-join-3.1.html
397 // WHOX uses '0' to indicate logged-out, account-notify and extended-join uses '*'.
398 // As '*' is used internally to represent logged-out, no need to handle that differently.
399 ircuser->setAccount(e->params()[1]);
400 // Update the user's real name, too
401 ircuser->setRealName(e->params()[2]);
404 // Else :nick!user@host JOIN #channelname
406 bool handledByNetsplit = false;
407 for (Netsplit* n : _netsplits.value(e->network())) {
408 handledByNetsplit = n->userJoined(e->prefix(), channel);
409 if (handledByNetsplit)
413 // With "away-notify" enabled, some IRC servers forget to send :away messages for users who join
414 // channels while away. Unfortunately, working around this involves WHO'ng every single user as
415 // they join, which is not very efficient. If at all possible, it's better to get the issue
416 // fixed in the IRC server instead.
418 // If pursuing a workaround instead, this is where you'd do it. Check the version control
419 // history for the commit that added this comment to see how to implement it - there's some
420 // unexpected situations to watch out for!
422 // See https://ircv3.net/specs/extensions/away-notify-3.1.html
424 if (!handledByNetsplit)
425 ircuser->joinChannel(channel);
427 e->setFlag(EventManager::Netsplit);
429 if (net->isMe(ircuser)) {
430 net->setChannelJoined(channel);
431 // Mark the message as Self
432 e->setFlag(EventManager::Self);
434 net->putRawLine(net->serverEncode("MODE " + channel)); // we want to know the modes of the channel we just joined, so we ask politely
438 void CoreSessionEventProcessor::lateProcessIrcEventKick(IrcEvent* e)
440 if (checkParamCount(e, 2)) {
441 e->network()->updateNickFromMask(e->prefix());
442 IrcUser* victim = e->network()->ircUser(e->params().at(1));
444 victim->partChannel(e->params().at(0));
445 // if(e->network()->isMe(victim)) e->network()->setKickedFromChannel(channel);
450 void CoreSessionEventProcessor::processIrcEventMode(IrcEvent* e)
452 if (!checkParamCount(e, 2))
455 if (e->network()->isChannelName(e->params().first())) {
458 IrcChannel* channel = e->network()->ircChannel(e->params()[0]);
460 // we received mode information for a channel we're not in. that means probably we've just been kicked out or something like
461 // that anyways: we don't have a place to store the data --> discard the info.
465 QString modes = e->params()[1];
468 for (auto mode : modes) {
478 if (e->network()->prefixModes().contains(mode)) {
479 // user channel modes (op, voice, etc...)
480 if (paramOffset < e->params().count()) {
481 IrcUser* ircUser = e->network()->ircUser(e->params()[paramOffset]);
483 qWarning() << Q_FUNC_INFO << "Unknown IrcUser:" << e->params()[paramOffset];
487 bool handledByNetsplit = false;
488 QHash<QString, Netsplit*> splits = _netsplits.value(e->network());
489 for (Netsplit* n : _netsplits.value(e->network())) {
490 handledByNetsplit = n->userAlreadyJoined(ircUser->hostmask(), channel->name());
491 if (handledByNetsplit) {
492 n->addMode(ircUser->hostmask(), channel->name(), QString(mode));
496 if (!handledByNetsplit)
497 channel->addUserMode(ircUser, QString(mode));
500 channel->removeUserMode(ircUser, QString(mode));
504 qWarning() << "Received MODE with too few parameters:" << e->params();
509 // regular channel modes
511 Network::ChannelModeType modeType = e->network()->channelModeType(mode);
512 if (modeType == Network::A_CHANMODE || modeType == Network::B_CHANMODE || (modeType == Network::C_CHANMODE && add)) {
513 if (paramOffset < e->params().count()) {
514 value = e->params()[paramOffset];
517 qWarning() << "Received MODE with too few parameters:" << e->params();
523 channel->addChannelMode(mode, value);
525 channel->removeChannelMode(mode, value);
531 IrcUser* ircUser = e->network()->newIrcUser(e->params().first());
532 QString modeString(e->params()[1]);
536 for (int c = 0; c < modeString.count(); c++) {
537 if (modeString[c] == '+') {
541 if (modeString[c] == '-') {
546 addModes += modeString[c];
548 removeModes += modeString[c];
550 if (!addModes.isEmpty())
551 ircUser->addUserModes(addModes);
552 if (!removeModes.isEmpty())
553 ircUser->removeUserModes(removeModes);
555 if (e->network()->isMe(ircUser)) {
556 // Mark the message as Self
557 e->setFlag(EventManager::Self);
558 coreNetwork(e)->updatePersistentModes(addModes, removeModes);
563 void CoreSessionEventProcessor::processIrcEventNick(IrcEvent* e)
565 if (checkParamCount(e, 1)) {
566 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
568 qWarning() << Q_FUNC_INFO << "Unknown IrcUser!";
572 if (e->network()->isMe(ircuser)) {
573 // Mark the message as Self
574 e->setFlag(EventManager::Self);
577 // Actual processing is handled in lateProcessIrcEventNick(), this just sets the event flag
581 void CoreSessionEventProcessor::lateProcessIrcEventNick(IrcEvent* e)
583 if (checkParamCount(e, 1)) {
584 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
586 qWarning() << Q_FUNC_INFO << "Unknown IrcUser!";
589 QString newnick = e->params().at(0);
590 QString oldnick = ircuser->nick();
592 // the order is cruicial
593 // otherwise the client would rename the buffer, see that the assigned ircuser doesn't match anymore
594 // and remove the ircuser from the querybuffer leading to a wrong on/offline state
595 ircuser->setNick(newnick);
596 coreSession()->renameBuffer(e->networkId(), newnick, oldnick);
600 void CoreSessionEventProcessor::processIrcEventPart(IrcEvent* e)
602 if (checkParamCount(e, 1)) {
603 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
605 qWarning() << Q_FUNC_INFO << "Unknown IrcUser!";
609 if (e->network()->isMe(ircuser)) {
610 // Mark the message as Self
611 e->setFlag(EventManager::Self);
614 // Actual processing is handled in lateProcessIrcEventNick(), this just sets the event flag
618 void CoreSessionEventProcessor::lateProcessIrcEventPart(IrcEvent* e)
620 if (checkParamCount(e, 1)) {
621 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
623 qWarning() << Q_FUNC_INFO << "Unknown IrcUser!";
626 QString channel = e->params().at(0);
627 ircuser->partChannel(channel);
628 if (e->network()->isMe(ircuser)) {
629 qobject_cast<CoreNetwork*>(e->network())->setChannelParted(channel);
634 void CoreSessionEventProcessor::processIrcEventPing(IrcEvent* e)
636 QString param = e->params().count() ? e->params().first() : QString();
638 // Take priority so this won't get stuck behind other queued messages.
639 coreNetwork(e)->putRawLine("PONG " + coreNetwork(e)->serverEncode(param), true);
642 void CoreSessionEventProcessor::processIrcEventPong(IrcEvent* e)
644 // Ensure we get at least one parameter
645 if (!checkParamCount(e, 1))
648 // Some IRC servers respond with only one parameter, others respond with two, with the latter
649 // being the text sent. Handle both situations.
651 if (e->params().count() < 2) {
652 // Only one parameter received
653 // :localhost PONG 02:43:49.565
654 timestamp = e->params().at(0);
657 // Two parameters received, pick the second
658 // :localhost PONG localhost :02:43:49.565
659 timestamp = e->params().at(1);
662 // The server is supposed to send back what we passed as parameter, and we send a timestamp.
663 // However, using quote and whatnot, one can send arbitrary pings, and IRC servers may decide to
664 // ignore our requests entirely and send whatever they want, so we have to do some sanity
667 // Attempt to parse the timestamp
668 QTime sendTime = QTime::fromString(timestamp, "hh:mm:ss.zzz");
669 if (sendTime.isValid()) {
670 // Mark IRC server as sending valid ping replies
671 if (!coreNetwork(e)->isPongTimestampValid()) {
672 coreNetwork(e)->setPongTimestampValid(true);
673 // Add a message the first time it happens
674 qDebug().nospace() << "Received PONG with valid timestamp, marking pong replies on "
676 << "\"" << qPrintable(e->network()->networkName())
677 << "\" (ID: " << qPrintable(QString::number(e->network()->networkId().toInt()))
678 << ") as usable for latency measurement";
680 // Remove pending flag
681 coreNetwork(e)->resetPongReplyPending();
683 // Don't show this in the UI
684 e->setFlag(EventManager::Silent);
685 // TODO: To allow for a user-sent /ping (without arguments, so default timestamp is used),
686 // this could track how many automated PINGs have been sent by the core and subtract one
687 // each time, only marking the PING as silent if there's pending automated pong replies.
688 // However, that's a behavior change which warrants further testing. For now, take the
689 // simpler, previous approach that errs on the side of silencing too much.
691 // Calculate latency from time difference, divided by 2 to account for round-trip time
692 e->network()->setLatency(sendTime.msecsTo(QTime::currentTime()) / 2);
694 else if (coreNetwork(e)->isPongReplyPending() && !coreNetwork(e)->isPongTimestampValid()) {
695 // There's an auto-PING reply pending and we've not yet received a PONG reply with a valid
696 // timestamp. It's possible this server will never respond with a valid timestamp, and thus
697 // any automated PINGs will result in unwanted spamming of the server buffer.
699 // Don't show this in the UI
700 e->setFlag(EventManager::Silent);
701 // Remove pending flag
702 coreNetwork(e)->resetPongReplyPending();
705 qDebug().nospace() << "Received PONG with invalid timestamp from network "
706 << "\"" << qPrintable(e->network()->networkName())
707 << "\" (ID: " << qPrintable(QString::number(e->network()->networkId().toInt()))
708 << "), silencing, parameters are " << e->params();
710 // else: We're not expecting a PONG reply and timestamp is not valid, assume it's from the user
713 void CoreSessionEventProcessor::processIrcEventQuit(IrcEvent* e)
715 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
719 if (e->network()->isMe(ircuser)) {
720 // Mark the message as Self
721 e->setFlag(EventManager::Self);
725 if (e->params().count() > 0)
726 msg = e->params()[0];
729 if (Netsplit::isNetsplit(msg)) {
731 if (!_netsplits[e->network()].contains(msg)) {
732 n = new Netsplit(e->network(), this);
733 connect(n, &Netsplit::finished, this, &CoreSessionEventProcessor::handleNetsplitFinished);
734 connect(n, &Netsplit::netsplitJoin, this, &CoreSessionEventProcessor::handleNetsplitJoin);
735 connect(n, &Netsplit::netsplitQuit, this, &CoreSessionEventProcessor::handleNetsplitQuit);
736 connect(n, &Netsplit::earlyJoin, this, &CoreSessionEventProcessor::handleEarlyNetsplitJoin);
737 _netsplits[e->network()].insert(msg, n);
740 n = _netsplits[e->network()][msg];
742 // add this user to the netsplit
743 n->userQuit(e->prefix(), ircuser->channels(), msg);
744 e->setFlag(EventManager::Netsplit);
746 // normal quit is handled in lateProcessIrcEventQuit()
749 void CoreSessionEventProcessor::lateProcessIrcEventQuit(IrcEvent* e)
751 if (e->testFlag(EventManager::Netsplit))
754 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
761 void CoreSessionEventProcessor::processIrcEventTopic(IrcEvent* e)
763 if (checkParamCount(e, 2)) {
764 IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix());
766 if (e->network()->isMe(ircuser)) {
767 // Mark the message as Self
768 e->setFlag(EventManager::Self);
771 IrcChannel* channel = e->network()->ircChannel(e->params().at(0));
773 channel->setTopic(e->params().at(1));
777 /* ERROR - "ERROR :reason"
778 Example: ERROR :Closing Link: nickname[xxx.xxx.xxx.xxx] (Large base64 image paste.)
779 See https://tools.ietf.org/html/rfc2812#section-3.7.4 */
780 void CoreSessionEventProcessor::processIrcEventError(IrcEvent* e)
782 if (!checkParamCount(e, 1))
785 if (coreNetwork(e)->disconnectExpected()) {
786 // During QUIT, the server should send an error (often, but not always, "Closing Link"). As
787 // we're expecting it, don't show this to the user.
788 e->setFlag(EventManager::Silent);
793 void CoreSessionEventProcessor::processKeyEvent(KeyEvent* e)
795 if (!Cipher::neededFeaturesAvailable()) {
796 emit newEvent(new MessageEvent(Message::Error,
798 tr("Unable to perform key exchange, missing qca-ossl plugin."),
805 auto* net = qobject_cast<CoreNetwork*>(e->network());
806 Cipher* c = net->cipher(e->target());
807 if (!c) // happens when there is no CoreIrcChannel for the target (i.e. never?)
810 if (e->exchangeType() == KeyEvent::Init) {
811 QByteArray pubKey = c->parseInitKeyX(e->key());
812 if (pubKey.isEmpty()) {
813 emit newEvent(new MessageEvent(Message::Error,
815 tr("Unable to parse the DH1080_INIT. Key exchange failed."),
823 net->setCipherKey(e->target(), c->key());
824 emit newEvent(new MessageEvent(Message::Info,
826 tr("Your key is set and messages will be encrypted."),
832 p << net->serverEncode(e->target()) << net->serverEncode("DH1080_FINISH ") + pubKey;
833 net->putCmd("NOTICE", p);
837 if (c->parseFinishKeyX(e->key())) {
838 net->setCipherKey(e->target(), c->key());
839 emit newEvent(new MessageEvent(Message::Info,
841 tr("Your key is set and messages will be encrypted."),
848 emit newEvent(new MessageEvent(Message::Info,
850 tr("Failed to parse DH1080_FINISH. Key exchange failed."),
861 void CoreSessionEventProcessor::processIrcEvent001(IrcEventNumeric* e)
863 e->network()->setCurrentServer(e->prefix());
864 e->network()->setMyNick(e->target());
868 // TODO Complete 005 handling, also use sensible defaults for non-sent stuff
869 void CoreSessionEventProcessor::processIrcEvent005(IrcEvent* e)
871 if (!checkParamCount(e, 1))
875 for (int i = 0; i < e->params().count() - 1; i++) {
876 QString key = e->params()[i].section("=", 0, 0);
877 QString value = e->params()[i].section("=", 1);
878 e->network()->addSupport(key, value);
881 /* determine our prefixes here to get an accurate result */
882 e->network()->determinePrefixes();
885 /* RPL_UMODEIS - "<user_modes> [<user_mode_params>]" */
886 void CoreSessionEventProcessor::processIrcEvent221(IrcEvent*)
888 // TODO: save information in network object
891 /* RPL_STATSCONN - "Highest connection cout: 8000 (7999 clients)" */
892 void CoreSessionEventProcessor::processIrcEvent250(IrcEvent*)
894 // TODO: save information in network object
897 /* RPL_LOCALUSERS - "Current local user: 5024 Max: 7999 */
898 void CoreSessionEventProcessor::processIrcEvent265(IrcEvent*)
900 // TODO: save information in network object
903 /* RPL_GLOBALUSERS - "Current global users: 46093 Max: 47650" */
904 void CoreSessionEventProcessor::processIrcEvent266(IrcEvent*)
906 // TODO: save information in network object
911 Replies 311 - 313, 317 - 319 are all replies generated in response to a WHOIS message.
913 "<nick> :<away message>"
915 Replies 352 and 315 paired are used to answer a WHO message.
918 Replies 314 and 369 are responses to a WHOWAS message.
922 /* RPL_AWAY - "<nick> :<away message>" */
923 void CoreSessionEventProcessor::processIrcEvent301(IrcEvent* e)
925 if (!checkParamCount(e, 2))
928 IrcUser* ircuser = e->network()->ircUser(e->params().at(0));
930 ircuser->setAway(true);
931 ircuser->setAwayMessage(e->params().at(1));
932 // lastAwayMessageTime is set in EventStringifier::processIrcEvent301(), no need to set it
934 // ircuser->setLastAwayMessageTime(now);
938 /* RPL_UNAWAY - ":You are no longer marked as being away" */
939 void CoreSessionEventProcessor::processIrcEvent305(IrcEvent* e)
941 IrcUser* me = e->network()->me();
945 if (e->network()->autoAwayActive()) {
946 e->network()->setAutoAwayActive(false);
947 e->setFlag(EventManager::Silent);
951 /* RPL_NOWAWAY - ":You have been marked as being away" */
952 void CoreSessionEventProcessor::processIrcEvent306(IrcEvent* e)
954 IrcUser* me = e->network()->me();
959 /* RPL_WHOISSERVICE - "<user> is registered nick" */
960 void CoreSessionEventProcessor::processIrcEvent307(IrcEvent* e)
962 if (!checkParamCount(e, 1))
965 IrcUser* ircuser = e->network()->ircUser(e->params().at(0));
967 ircuser->setWhoisServiceReply(e->params().join(" "));
970 /* RPL_SUSERHOST - "<user> is available for help." */
971 void CoreSessionEventProcessor::processIrcEvent310(IrcEvent* e)
973 if (!checkParamCount(e, 1))
976 IrcUser* ircuser = e->network()->ircUser(e->params().at(0));
978 ircuser->setSuserHost(e->params().join(" "));
981 /* RPL_WHOISUSER - "<nick> <user> <host> * :<real name>" */
982 void CoreSessionEventProcessor::processIrcEvent311(IrcEvent* e)
984 if (!checkParamCount(e, 3))
987 IrcUser* ircuser = e->network()->ircUser(e->params().at(0));
989 ircuser->setUser(e->params().at(1));
990 ircuser->setHost(e->params().at(2));
991 ircuser->setRealName(e->params().last());
995 /* RPL_WHOISSERVER - "<nick> <server> :<server info>" */
996 void CoreSessionEventProcessor::processIrcEvent312(IrcEvent* e)
998 if (!checkParamCount(e, 2))
1001 IrcUser* ircuser = e->network()->ircUser(e->params().at(0));
1003 ircuser->setServer(e->params().at(1));
1006 /* RPL_WHOISOPERATOR - "<nick> :is an IRC operator" */
1007 void CoreSessionEventProcessor::processIrcEvent313(IrcEvent* e)
1009 if (!checkParamCount(e, 1))
1012 IrcUser* ircuser = e->network()->ircUser(e->params().at(0));
1014 ircuser->setIrcOperator(e->params().last());
1017 /* RPL_ENDOFWHO: "<name> :End of WHO list" */
1018 void CoreSessionEventProcessor::processIrcEvent315(IrcEvent* e)
1020 if (!checkParamCount(e, 1))
1023 if (coreNetwork(e)->setAutoWhoDone(e->params()[0]))
1024 e->setFlag(EventManager::Silent);
1027 /* RPL_WHOISIDLE - "<nick> <integer> :seconds idle"
1028 (real life: "<nick> <integer> <integer> :seconds idle, signon time) */
1029 void CoreSessionEventProcessor::processIrcEvent317(IrcEvent* e)
1031 if (!checkParamCount(e, 2))
1034 QDateTime loginTime;
1036 int idleSecs = e->params()[1].toInt();
1037 if (e->params().count() > 3) { // if we have more then 3 params we have the above mentioned "real life" situation
1038 // Allow for 64-bit time
1039 qint64 logintime = e->params()[2].toLongLong();
1040 // Time in IRC protocol is defined as seconds. Convert from seconds instead.
1041 // See https://doc.qt.io/qt-5/qdatetime.html#fromSecsSinceEpoch
1042 #if QT_VERSION >= 0x050800
1043 loginTime = QDateTime::fromSecsSinceEpoch(logintime);
1045 // fromSecsSinceEpoch() was added in Qt 5.8. Manually downconvert to seconds for
1047 // See https://doc.qt.io/qt-5/qdatetime.html#fromMSecsSinceEpoch
1048 loginTime = QDateTime::fromMSecsSinceEpoch((qint64)(logintime * 1000));
1052 IrcUser* ircuser = e->network()->ircUser(e->params()[0]);
1054 ircuser->setIdleTime(e->timestamp().addSecs(-idleSecs));
1055 if (loginTime.isValid())
1056 ircuser->setLoginTime(loginTime);
1060 /* RPL_LIST - "<channel> <# visible> :<topic>" */
1061 void CoreSessionEventProcessor::processIrcEvent322(IrcEvent* e)
1063 if (!checkParamCount(e, 1))
1066 QString channelName;
1067 quint32 userCount = 0;
1070 switch (e->params().count()) {
1072 topic = e->params()[2];
1075 userCount = e->params()[1].toUInt();
1078 channelName = e->params()[0];
1083 if (coreSession()->ircListHelper()->addChannel(e->networkId(), channelName, userCount, topic))
1084 e->stop(); // consumed by IrcListHelper, so don't further process/show this event
1087 /* RPL_LISTEND ":End of LIST" */
1088 void CoreSessionEventProcessor::processIrcEvent323(IrcEvent* e)
1090 if (!checkParamCount(e, 1))
1093 if (coreSession()->ircListHelper()->endOfChannelList(e->networkId()))
1094 e->stop(); // consumed by IrcListHelper, so don't further process/show this event
1097 /* RPL_CHANNELMODEIS - "<channel> <mode> <mode params>" */
1098 void CoreSessionEventProcessor::processIrcEvent324(IrcEvent* e)
1100 processIrcEventMode(e);
1103 /* RPL_WHOISACCOUNT - "<nick> <account> :is authed as" */
1104 void CoreSessionEventProcessor::processIrcEvent330(IrcEvent* e)
1106 // Though the ":is authed as" remark should always be there, we should handle cases when it's
1107 // not included, too.
1108 if (!checkParamCount(e, 2))
1111 IrcUser* ircuser = e->network()->ircUser(e->params().at(0));
1113 ircuser->setAccount(e->params().at(1));
1118 void CoreSessionEventProcessor::processIrcEvent331(IrcEvent* e)
1120 if (!checkParamCount(e, 1))
1123 IrcChannel* chan = e->network()->ircChannel(e->params()[0]);
1125 chan->setTopic(QString());
1129 void CoreSessionEventProcessor::processIrcEvent332(IrcEvent* e)
1131 if (!checkParamCount(e, 2))
1134 IrcChannel* chan = e->network()->ircChannel(e->params()[0]);
1136 chan->setTopic(e->params()[1]);
1139 /* RPL_WHOREPLY: "<channel> <user> <host> <server> <nick>
1140 ( "H" / "G" > ["*"] [ ( "@" / "+" ) ] :<hopcount> <real name>" */
1141 void CoreSessionEventProcessor::processIrcEvent352(IrcEvent* e)
1143 if (!checkParamCount(e, 6))
1146 QString channel = e->params()[0];
1147 IrcUser* ircuser = e->network()->ircUser(e->params()[4]);
1149 // Only process the WHO information if an IRC user exists. Don't create an IRC user here;
1150 // there's no way to track when the user quits, which would leave a phantom IrcUser lying
1152 // NOTE: Whenever MONITOR support is introduced, the IrcUser will be created by an
1153 // RPL_MONONLINE numeric before any WHO commands are run.
1154 processWhoInformation(e->network(),
1161 e->params().last().section(" ", 1));
1164 // Check if channel name has a who in progress.
1165 if (coreNetwork(e)->isAutoWhoInProgress(channel)) {
1166 e->setFlag(EventManager::Silent);
1171 void CoreSessionEventProcessor::processIrcEvent353(IrcEvent* e)
1173 if (!checkParamCount(e, 3))
1176 // param[0] is either "=", "*" or "@" indicating a public, private or secret channel
1177 // we don't use this information at the time beeing
1178 QString channelname = e->params()[1];
1180 IrcChannel* channel = e->network()->ircChannel(channelname);
1182 qWarning() << Q_FUNC_INFO << "Received unknown target channel:" << channelname;
1189 // Cache result of multi-prefix to avoid unneeded casts and lookups with each iteration.
1190 bool _useCapMultiPrefix = coreNetwork(e)->capEnabled(IrcCap::MULTI_PREFIX);
1192 for (QString nick : e->params()[2].split(' ', QString::SkipEmptyParts)) {
1195 if (_useCapMultiPrefix) {
1196 // If multi-prefix is enabled, all modes will be sent in NAMES replies.
1197 // :hades.arpa 353 guest = #tethys :~&@%+aji &@Attila @+alyx +KindOne Argure
1198 // See: http://ircv3.net/specs/extensions/multi-prefix-3.1.html
1199 while (e->network()->prefixes().contains(nick[0])) {
1200 // Mode found in 1 left-most character, add it to the list.
1201 // Note: sending multiple modes may cause a warning in older clients.
1202 // In testing, the clients still seemed to function fine.
1203 mode.append(e->network()->prefixToMode(nick[0]));
1204 // Remove this mode from the nick
1205 nick = nick.remove(0, 1);
1208 else if (e->network()->prefixes().contains(nick[0])) {
1209 // Multi-prefix is disabled and a mode prefix was found.
1210 mode = e->network()->prefixToMode(nick[0]);
1214 // If userhost-in-names capability is enabled, the following will be
1215 // in the form "nick!user@host" rather than "nick". This works without
1216 // special handling as the following use nickFromHost() as needed.
1217 // See: http://ircv3.net/specs/extensions/userhost-in-names-3.2.html
1223 channel->joinIrcUsers(nicks, modes);
1226 /* RPL_WHOSPCRPL: "<yournick> 152 #<channel> ~<ident> <host> <servname> <nick>
1227 ("H"/ "G") <account> :<realname>"
1228 <channel> is * if not specific to any channel
1229 <account> is * if not logged in
1230 Follows HexChat's usage of 'whox'
1231 See https://github.com/hexchat/hexchat/blob/c874a9525c9b66f1d5ddcf6c4107d046eba7e2c5/src/common/proto-irc.c#L750
1232 And http://faerion.sourceforge.net/doc/irc/whox.var*/
1233 void CoreSessionEventProcessor::processIrcEvent354(IrcEvent* e)
1235 // First only check if at least one parameter exists. Otherwise, it'll stop the result from
1236 // being shown if the user chooses different parameters.
1237 if (!checkParamCount(e, 1))
1240 if (e->params()[0].toUInt() != IrcCap::ACCOUNT_NOTIFY_WHOX_NUM) {
1241 // Ignore WHOX replies without expected number for we have no idea what fields are specified
1245 // Now we're fairly certain this is supposed to be an automated WHOX. Bail out if it doesn't
1246 // match what we require - 9 parameters.
1247 if (!checkParamCount(e, 9))
1250 QString channel = e->params()[1];
1251 IrcUser* ircuser = e->network()->ircUser(e->params()[5]);
1253 // Only process the WHO information if an IRC user exists. Don't create an IRC user here;
1254 // there's no way to track when the user quits, which would leave a phantom IrcUser lying
1256 // NOTE: Whenever MONITOR support is introduced, the IrcUser will be created by an
1257 // RPL_MONONLINE numeric before any WHO commands are run.
1258 processWhoInformation(e->network(), channel, ircuser, e->params()[4], e->params()[2], e->params()[3], e->params()[6], e->params().last());
1259 // Don't use .section(" ", 1) with WHOX replies, for there's no hopcount to trim out
1261 // As part of IRCv3 account-notify, check account name
1262 // WHOX uses '0' to indicate logged-out, account-notify and extended-join uses '*'.
1263 QString newAccount = e->params()[7];
1264 if (newAccount != "0") {
1265 // Account logged in, set account name
1266 ircuser->setAccount(newAccount);
1269 // Account logged out, set account name to logged-out
1270 ircuser->setAccount("*");
1274 // Check if channel name has a who in progress.
1275 if (coreNetwork(e)->isAutoWhoInProgress(channel)) {
1276 e->setFlag(EventManager::Silent);
1280 void CoreSessionEventProcessor::processWhoInformation(Network* net,
1281 const QString& targetChannel,
1283 const QString& server,
1284 const QString& user,
1285 const QString& host,
1286 const QString& awayStateAndModes,
1287 const QString& realname)
1289 ircUser->setUser(user);
1290 ircUser->setHost(host);
1291 ircUser->setServer(server);
1292 ircUser->setRealName(realname);
1294 bool away = awayStateAndModes.contains("G", Qt::CaseInsensitive);
1295 ircUser->setAway(away);
1297 if (net->capEnabled(IrcCap::MULTI_PREFIX)) {
1298 // If multi-prefix is enabled, all modes will be sent in WHO replies.
1299 // :kenny.chatspike.net 352 guest #test grawity broken.symlink *.chatspike.net grawity H@%+ :0 Mantas M.
1300 // See: http://ircv3.net/specs/extensions/multi-prefix-3.1.html
1301 QString uncheckedModes = awayStateAndModes;
1302 QString validModes = QString();
1303 while (!uncheckedModes.isEmpty()) {
1304 // Mode found in 1 left-most character, add it to the list
1305 if (net->prefixes().contains(uncheckedModes[0])) {
1306 validModes.append(net->prefixToMode(uncheckedModes[0]));
1308 // Remove this mode from the list of unchecked modes
1309 uncheckedModes = uncheckedModes.remove(0, 1);
1312 // Some IRC servers decide to not follow the spec, returning only -some- of the user
1313 // modes in WHO despite listing them all in NAMES. For now, assume it can only add
1314 // and not take away. *sigh*
1315 if (!validModes.isEmpty()) {
1316 if (targetChannel != "*") {
1317 // Channel-specific modes received, apply to given channel only
1318 IrcChannel* ircChan = net->ircChannel(targetChannel);
1320 // Do one mode at a time
1321 // TODO Better way of syncing this without breaking protocol?
1322 for (int i = 0; i < validModes.count(); ++i) {
1323 ircChan->addUserMode(ircUser, validModes.at(i));
1328 // Modes apply to the user everywhere
1329 ircUser->addUserModes(validModes);
1335 /* ERR_NOSUCHCHANNEL - "<channel name> :No such channel" */
1336 void CoreSessionEventProcessor::processIrcEvent403(IrcEventNumeric* e)
1338 // If this is the result of an AutoWho, hide it. It's confusing to show to the user.
1339 // Though the ":No such channel" remark should always be there, we should handle cases when it's
1340 // not included, too.
1341 if (!checkParamCount(e, 1))
1344 QString channelOrNick = e->params()[0];
1345 // Check if channel name has a who in progress.
1346 // If not, then check if user nick exists and has a who in progress.
1347 if (coreNetwork(e)->isAutoWhoInProgress(channelOrNick)) {
1348 qDebug() << "Channel/nick" << channelOrNick << "no longer exists during AutoWho, ignoring";
1349 e->setFlag(EventManager::Silent);
1353 /* ERR_ERRONEUSNICKNAME */
1354 void CoreSessionEventProcessor::processIrcEvent432(IrcEventNumeric* e)
1356 if (!checkParamCount(e, 1))
1360 if (e->params().count() < 2) {
1361 // handle unreal-ircd bug, where unreal ircd doesnt supply a TARGET in ERR_ERRONEUSNICKNAME during registration phase:
1363 // :irc.scortum.moep.net 432 @@@ :Erroneous Nickname: Illegal characters
1364 // correct server reply:
1365 // :irc.scortum.moep.net 432 * @@@ :Erroneous Nickname: Illegal characters
1366 e->params().prepend(e->target());
1369 errnick = e->params()[0];
1371 tryNextNick(e, errnick, true /* erroneus */);
1374 /* ERR_NICKNAMEINUSE */
1375 void CoreSessionEventProcessor::processIrcEvent433(IrcEventNumeric* e)
1377 if (!checkParamCount(e, 1))
1380 QString errnick = e->params().first();
1382 // if there is a problem while connecting to the server -> we handle it
1383 // but only if our connection has not been finished yet...
1384 if (!e->network()->currentServer().isEmpty())
1387 tryNextNick(e, errnick);
1390 /* ERR_UNAVAILRESOURCE */
1391 void CoreSessionEventProcessor::processIrcEvent437(IrcEventNumeric* e)
1393 if (!checkParamCount(e, 1))
1396 QString errnick = e->params().first();
1398 // if there is a problem while connecting to the server -> we handle it
1399 // but only if our connection has not been finished yet...
1400 if (!e->network()->currentServer().isEmpty())
1403 if (!e->network()->isChannelName(errnick))
1404 tryNextNick(e, errnick);
1408 void CoreSessionEventProcessor::processIrcEvent(IrcEvent *e) {
1409 if(!checkParamCount(e, 1))
1415 /* Handle signals from Netsplit objects */
1417 void CoreSessionEventProcessor::handleNetsplitJoin(
1418 Network* net, const QString& channel, const QStringList& users, const QStringList& modes, const QString& quitMessage)
1420 IrcChannel* ircChannel = net->ircChannel(channel);
1424 QList<IrcUser*> ircUsers;
1425 QStringList newModes = modes;
1426 QStringList newUsers = users;
1428 for (const QString& user : users) {
1429 IrcUser* iu = net->ircUser(nickFromMask(user));
1431 ircUsers.append(iu);
1432 else { // the user already quit
1433 int idx = users.indexOf(user);
1434 newUsers.removeAt(idx);
1435 newModes.removeAt(idx);
1439 ircChannel->joinIrcUsers(ircUsers, newModes);
1440 NetworkSplitEvent* event = new NetworkSplitEvent(EventManager::NetworkSplitJoin, net, channel, newUsers, quitMessage);
1441 emit newEvent(event);
1444 void CoreSessionEventProcessor::handleNetsplitQuit(Network* net, const QString& channel, const QStringList& users, const QString& quitMessage)
1446 NetworkSplitEvent* event = new NetworkSplitEvent(EventManager::NetworkSplitQuit, net, channel, users, quitMessage);
1447 emit newEvent(event);
1448 for (const QString& user : users) {
1449 IrcUser* ircUser = net->ircUser(nickFromMask(user));
1450 if (ircUser) ircUser->quit();
1454 void CoreSessionEventProcessor::handleEarlyNetsplitJoin(Network* net, const QString& channel, const QStringList& users, const QStringList& modes)
1456 IrcChannel* ircChannel = net->ircChannel(channel);
1458 qDebug() << "handleEarlyNetsplitJoin(): channel " << channel << " invalid";
1461 QList<NetworkEvent*> events;
1462 QList<IrcUser*> ircUsers;
1463 QStringList newModes = modes;
1465 for (const QString& user : users) {
1466 IrcUser* ircUser = net->updateNickFromMask(user);
1468 ircUsers.append(ircUser);
1469 // fake event for scripts that consume join events
1470 events << new IrcEvent(EventManager::IrcEventJoin, net, {}, ircUser->hostmask(), QStringList() << channel);
1473 newModes.removeAt(users.indexOf(user));
1476 ircChannel->joinIrcUsers(ircUsers, newModes);
1477 for (NetworkEvent* event : events) {
1478 event->setFlag(EventManager::Fake); // ignore this in here!
1479 emit newEvent(event);
1483 void CoreSessionEventProcessor::handleNetsplitFinished()
1485 auto* n = qobject_cast<Netsplit*>(sender());
1487 QHash<QString, Netsplit*> splithash = _netsplits.take(n->network());
1488 splithash.remove(splithash.key(n));
1489 if (splithash.count())
1490 _netsplits[n->network()] = splithash;
1494 void CoreSessionEventProcessor::destroyNetsplits(NetworkId netId)
1496 Network* net = coreSession()->network(netId);
1500 QHash<QString, Netsplit*> splits = _netsplits.take(net);
1504 /*******************************/
1505 /******** CTCP HANDLING ********/
1506 /*******************************/
1508 void CoreSessionEventProcessor::processCtcpEvent(CtcpEvent* e)
1510 if (e->testFlag(EventManager::Self))
1511 return; // ignore ctcp events generated by user input
1513 if (e->type() != EventManager::CtcpEvent || e->ctcpType() != CtcpEvent::Query)
1516 handle(e->ctcpCmd(), Q_ARG(CtcpEvent*, e));
1519 void CoreSessionEventProcessor::defaultHandler(const QString& ctcpCmd, CtcpEvent* e)
1521 // This handler is only there to avoid warnings for unknown CTCPs
1526 void CoreSessionEventProcessor::handleCtcpAction(CtcpEvent* e)
1528 // This handler is only there to feed CLIENTINFO
1532 void CoreSessionEventProcessor::handleCtcpClientinfo(CtcpEvent* e)
1534 QStringList supportedHandlers;
1535 for (const QString& handler : providesHandlers())
1536 supportedHandlers << handler.toUpper();
1537 std::sort(supportedHandlers.begin(), supportedHandlers.end());
1538 e->setReply(supportedHandlers.join(" "));
1541 // http://www.irchelp.org/irchelp/rfc/ctcpspec.html
1542 // http://en.wikipedia.org/wiki/Direct_Client-to-Client
1543 void CoreSessionEventProcessor::handleCtcpDcc(CtcpEvent* e)
1545 // DCC support is unfinished, experimental and potentially dangerous, so make it opt-in
1546 if (!Quassel::isOptionSet("enable-experimental-dcc")) {
1547 qInfo() << "DCC disabled, start core with --enable-experimental-dcc if you really want to try it out";
1551 // normal: SEND <filename> <ip> <port> [<filesize>]
1552 // reverse: SEND <filename> <ip> 0 <filesize> <token>
1553 QStringList params = e->param().split(' ');
1554 if (params.count()) {
1555 QString cmd = params[0].toUpper();
1556 if (cmd == "SEND") {
1557 if (params.count() < 4) {
1558 qWarning() << "Invalid DCC SEND request:" << e; // TODO emit proper error to client
1561 QString filename = params[1];
1562 QHostAddress address;
1563 quint16 port = params[3].toUShort();
1565 QString numIp = params[2]; // this is either IPv4 as a 32 bit value, or IPv6 (which always contains a colon)
1566 if (numIp.contains(':')) { // IPv6
1567 if (!address.setAddress(numIp)) {
1568 qWarning() << "Invalid IPv6:" << numIp;
1573 address.setAddress(numIp.toUInt());
1576 if (port == 0) { // Reverse DCC is indicated by a 0 port
1577 emit newEvent(new MessageEvent(Message::Error,
1579 tr("Reverse DCC SEND not supported"),
1587 qWarning() << "Privileged port requested:" << port; // FIXME ask user if this is ok
1590 if (params.count() > 4) { // filesize is optional
1591 size = params[4].toULong();
1594 // TODO: check if target is the right thing to use for the partner
1595 CoreTransfer* transfer = new CoreTransfer(Transfer::Direction::Receive, e->target(), filename, address, port, size, this);
1596 coreSession()->signalProxy()->synchronize(transfer);
1597 coreSession()->transferManager()->addTransfer(transfer);
1600 emit newEvent(new MessageEvent(Message::Error,
1602 tr("DCC %1 not supported").arg(cmd),
1612 void CoreSessionEventProcessor::handleCtcpPing(CtcpEvent* e)
1614 e->setReply(e->param().isNull() ? "" : e->param());
1617 void CoreSessionEventProcessor::handleCtcpTime(CtcpEvent* e)
1619 // Use the ISO standard to avoid locale-specific translated names
1620 // Include timezone offset data to show which timezone a user's in, otherwise we're providing
1621 // NTP-over-IRC with terrible accuracy.
1622 e->setReply(formatDateTimeToOffsetISO(QDateTime::currentDateTime()));
1625 void CoreSessionEventProcessor::handleCtcpVersion(CtcpEvent* e)
1627 // Deliberately do not translate project name
1628 // Use the ISO standard to avoid locale-specific translated names
1629 // Use UTC time to provide a consistent string regardless of timezone
1630 // (Statistics tracking tools usually only group client versions by exact string matching)
1631 e->setReply(QString("Quassel IRC %1 (version date %2) -- https://www.quassel-irc.org")
1632 .arg(Quassel::buildInfo().plainVersionString)
1633 .arg(Quassel::buildInfo().commitDate.isEmpty()
1635 : tryFormatUnixEpoch(Quassel::buildInfo().commitDate, Qt::DateFormat::ISODate, true)));