X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcore%2Fcoresessioneventprocessor.cpp;h=86b4cde60b5d118768b14be8372e3441db4ecabf;hp=1082617c048640b4e27f1cea0b2fa46f650c97e0;hb=2c4cc10cfb540da2b33c2a2dba8e012b2b594395;hpb=fdfd62334f728bd05470c5191194d55027fec86e diff --git a/src/core/coresessioneventprocessor.cpp b/src/core/coresessioneventprocessor.cpp index 1082617c..86b4cde6 100644 --- a/src/core/coresessioneventprocessor.cpp +++ b/src/core/coresessioneventprocessor.cpp @@ -1,5 +1,5 @@ /*************************************************************************** - * Copyright (C) 2005-2012 by the Quassel Project * + * Copyright (C) 2005-2019 by the Quassel Project * * devel@quassel-irc.org * * * * This program is free software; you can redistribute it and/or modify * @@ -15,7 +15,7 @@ * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * ***************************************************************************/ #include "coresessioneventprocessor.h" @@ -23,6 +23,8 @@ #include "coreirclisthelper.h" #include "corenetwork.h" #include "coresession.h" +#include "coretransfer.h" +#include "coretransfermanager.h" #include "ctcpevent.h" #include "ircevent.h" #include "ircuser.h" @@ -30,396 +32,880 @@ #include "netsplit.h" #include "quassel.h" -CoreSessionEventProcessor::CoreSessionEventProcessor(CoreSession *session) - : BasicHandler("handleCtcp", session), - _coreSession(session) +#ifdef HAVE_QCA2 +# include "keyevent.h" +#endif + +// IRCv3 capabilities +#include "irccap.h" + +CoreSessionEventProcessor::CoreSessionEventProcessor(CoreSession* session) + : BasicHandler("handleCtcp", session) + , _coreSession(session) { - connect(coreSession(), SIGNAL(networkDisconnected(NetworkId)), this, SLOT(destroyNetsplits(NetworkId))); - connect(this, SIGNAL(newEvent(Event *)), coreSession()->eventManager(), SLOT(postEvent(Event *))); + connect(coreSession(), &CoreSession::networkDisconnected, this, &CoreSessionEventProcessor::destroyNetsplits); + connect(this, &CoreSessionEventProcessor::newEvent, coreSession()->eventManager(), &EventManager::postEvent); } -bool CoreSessionEventProcessor::checkParamCount(IrcEvent *e, int minParams) { - if(e->params().count() < minParams) { - if(e->type() == EventManager::IrcEventNumeric) { - qWarning() << "Command " << static_cast(e)->number() << " requires " << minParams << "params, got: " << e->params(); - } else { - QString name = coreSession()->eventManager()->enumName(e->type()); - qWarning() << qPrintable(name) << "requires" << minParams << "params, got:" << e->params(); +bool CoreSessionEventProcessor::checkParamCount(IrcEvent* e, int minParams) +{ + if (e->params().count() < minParams) { + if (e->type() == EventManager::IrcEventNumeric) { + qWarning() << "Command " << static_cast(e)->number() << " requires " << minParams + << "params, got: " << e->params(); + } + else { + QString name = coreSession()->eventManager()->enumName(e->type()); + qWarning() << qPrintable(name) << "requires" << minParams << "params, got:" << e->params(); + } + e->stop(); + return false; } - e->stop(); - return false; - } - return true; + return true; } -void CoreSessionEventProcessor::tryNextNick(NetworkEvent *e, const QString &errnick, bool erroneus) { - QStringList desiredNicks = coreSession()->identity(e->network()->identity())->nicks(); - int nextNickIdx = desiredNicks.indexOf(errnick) + 1; - QString nextNick; - if(nextNickIdx > 0 && desiredNicks.size() > nextNickIdx) { - nextNick = desiredNicks[nextNickIdx]; - } else { - if(erroneus) { - // FIXME Make this an ErrorEvent or something like that, so it's translated in the client - MessageEvent *msgEvent = new MessageEvent(Message::Error, e->network(), - tr("No free and valid nicks in nicklist found. use: /nick to continue"), - QString(), QString(), Message::None, e->timestamp()); - emit newEvent(msgEvent); - return; - } else { - nextNick = errnick + "_"; +void CoreSessionEventProcessor::tryNextNick(NetworkEvent* e, const QString& errnick, bool erroneus) +{ + QStringList desiredNicks = coreSession()->identity(e->network()->identity())->nicks(); + int nextNickIdx = desiredNicks.indexOf(errnick) + 1; + QString nextNick; + if (nextNickIdx > 0 && desiredNicks.size() > nextNickIdx) { + nextNick = desiredNicks[nextNickIdx]; } - } - // FIXME Use a proper output event for this - coreNetwork(e)->putRawLine("NICK " + coreNetwork(e)->encodeServerString(nextNick)); + else { + if (erroneus) { + // FIXME Make this an ErrorEvent or something like that, so it's translated in the client + MessageEvent* msgEvent = new MessageEvent(Message::Error, + e->network(), + tr("No free and valid nicks in nicklist found. use: /nick to continue"), + QString(), + QString(), + Message::None, + e->timestamp()); + emit newEvent(msgEvent); + return; + } + else { + nextNick = errnick + "_"; + } + } + // FIXME Use a proper output event for this + coreNetwork(e)->putRawLine("NICK " + coreNetwork(e)->encodeServerString(nextNick)); } -void CoreSessionEventProcessor::processIrcEventNumeric(IrcEventNumeric *e) { - switch(e->number()) { +void CoreSessionEventProcessor::processIrcEventNumeric(IrcEventNumeric* e) +{ + switch (e->number()) { + // SASL authentication replies + // See: http://ircv3.net/specs/extensions/sasl-3.1.html + + // case 900: // RPL_LOGGEDIN + // case 901: // RPL_LOGGEDOUT + // Don't use 900 or 901 for updating the local hostmask. Unreal 3.2 gives it as the IP address + // even when cloaked. + // Every other reply should result in moving on + // TODO Handle errors to stop connection if appropriate + case 902: // ERR_NICKLOCKED + case 903: // RPL_SASLSUCCESS + case 904: // ERR_SASLFAIL + case 905: // ERR_SASLTOOLONG + case 906: // ERR_SASLABORTED + case 907: // ERR_SASLALREADY + // Move on to the next capability + coreNetwork(e)->sendNextCap(); + break; + + default: + break; + } +} - // CAP stuff - case 903: case 904: case 905: case 906: case 907: - qobject_cast(e->network())->putRawLine("CAP END"); - break; +void CoreSessionEventProcessor::processIrcEventAuthenticate(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; + + if (e->params().at(0) != "+") { + qWarning() << "Invalid AUTHENTICATE" << e; + return; + } - default: - break; - } + CoreNetwork* net = coreNetwork(e); + +#ifdef HAVE_SSL + if (net->identityPtr()->sslCert().isNull()) { +#endif + QString construct = net->saslAccount(); + construct.append(QChar(QChar::Null)); + construct.append(net->saslAccount()); + construct.append(QChar(QChar::Null)); + construct.append(net->saslPassword()); + QByteArray saslData = QByteArray(construct.toLatin1().toBase64()); + saslData.prepend("AUTHENTICATE "); + net->putRawLine(saslData); +#ifdef HAVE_SSL + } + else { + net->putRawLine("AUTHENTICATE +"); + } +#endif } -void CoreSessionEventProcessor::processIrcEventAuthenticate(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEventCap(IrcEvent* e) +{ + // Handle capability negotiation + // See: http://ircv3.net/specs/core/capability-negotiation-3.2.html + // And: http://ircv3.net/specs/core/capability-negotiation-3.1.html + + // All commands require at least 2 parameters + if (!checkParamCount(e, 2)) + return; + + CoreNetwork* coreNet = coreNetwork(e); + QString capCommand = e->params().at(1).trimmed().toUpper(); + if (capCommand == "LS" || capCommand == "NEW") { + // Either we've gotten a list of capabilities, or new capabilities we may want + // Server: CAP * LS * :multi-prefix extended-join account-notify batch invite-notify tls + // Server: CAP * LS * :cap-notify server-time example.org/dummy-cap=dummyvalue example.org/second-dummy-cap + // Server: CAP * LS :userhost-in-names sasl=EXTERNAL,DH-AES,DH-BLOWFISH,ECDSA-NIST256P-CHALLENGE,PLAIN + bool capListFinished; + QStringList availableCaps; + if (e->params().count() == 4) { + // Middle of multi-line reply, ignore the asterisk + capListFinished = false; + availableCaps = e->params().at(3).split(' '); + } + else { + // Single line reply + capListFinished = true; + if (e->params().count() >= 3) { + // Some capabilities are specified, add them + availableCaps = e->params().at(2).split(' '); + } + else { + // No capabilities available, add an empty list + availableCaps = QStringList(); + } + } + // Sort capabilities before requesting for consistency among networks. This may avoid + // unexpected cases when some networks offer capabilities in a different order than + // others. It also looks nicer in logs. Not required. + availableCaps.sort(); + // Store what capabilities are available + QString availableCapName, availableCapValue; + for (int i = 0; i < availableCaps.count(); ++i) { + // Capability may include values, e.g. CAP * LS :multi-prefix sasl=EXTERNAL + // Capability name comes before the first '='. If no '=' exists, this gets the + // whole string instead. + availableCapName = availableCaps[i].section('=', 0, 0).trimmed(); + // Some capabilities include multiple key=value pairs in the listing, + // e.g. "sts=duration=31536000,port=6697" + // Include everything after the first equal sign as part of the value. If no '=' + // exists, this gets an empty string. + availableCapValue = availableCaps[i].section('=', 1).trimmed(); + // Only add the capability if it's non-empty + if (!availableCapName.isEmpty()) { + coreNet->addCap(availableCapName, availableCapValue); + } + } - if(e->params().at(0) != "+") { - qWarning() << "Invalid AUTHENTICATE" << e; - return; - } + // Begin capability requests when capability listing complete + if (capListFinished) + coreNet->beginCapNegotiation(); + } + else if (capCommand == "ACK") { + // CAP ACK requires at least 3 parameters (no empty response allowed) + if (!checkParamCount(e, 3)) { + // If an invalid reply is sent, try to continue rather than getting stuck. + coreNet->sendNextCap(); + return; + } - CoreNetwork *net = coreNetwork(e); + // Server: CAP * ACK :multi-prefix sasl + // Got the capabilities we want, handle as needed. + QStringList acceptedCaps; + acceptedCaps = e->params().at(2).split(' '); + + // Store what capability was acknowledged + QString acceptedCap; + + // Keep track of whether or not a capability requires further configuration. Due to queuing + // logic in CoreNetwork::queueCap(), this shouldn't ever happen when more than one + // capability is requested, but it's better to handle edge cases or faulty servers. + bool capsRequireConfiguration = false; + + for (int i = 0; i < acceptedCaps.count(); ++i) { + acceptedCap = acceptedCaps[i].trimmed().toLower(); + // Mark this cap as accepted + coreNet->acknowledgeCap(acceptedCap); + if (!capsRequireConfiguration && coreNet->capsRequiringConfiguration.contains(acceptedCap)) { + capsRequireConfiguration = true; + // Some capabilities (e.g. SASL) require further messages to finish. If so, do NOT + // send the next capability; it will be handled elsewhere in CoreNetwork. + // Otherwise, allow moving on to the next capability. + } + } - QString construct = net->saslAccount(); - construct.append(QChar(QChar::Null)); - construct.append(net->saslAccount()); - construct.append(QChar(QChar::Null)); - construct.append(net->saslPassword()); - QByteArray saslData = QByteArray(construct.toAscii().toBase64()); - saslData.prepend("AUTHENTICATE "); - net->putRawLine(saslData); -} + if (!capsRequireConfiguration) { + // No additional configuration required, move on to the next capability + coreNet->sendNextCap(); + } + } + else if (capCommand == "NAK" || capCommand == "DEL") { + // CAP NAK/DEL require at least 3 parameters (no empty response allowed) + if (!checkParamCount(e, 3)) { + if (capCommand == "NAK") { + // If an invalid reply is sent, try to continue rather than getting stuck. This + // only matters for denied caps, not removed caps. + coreNet->sendNextCap(); + } + return; + } -void CoreSessionEventProcessor::processIrcEventCap(IrcEvent *e) { - // for SASL, there will only be a single param of 'sasl', however you can check here for - // additional CAP messages (ls, multi-prefix, et cetera). + // Either something went wrong with the capabilities, or they are no longer supported + // > For CAP NAK + // Server: CAP * NAK :multi-prefix sasl + // > For CAP DEL + // Server: :irc.example.com CAP modernclient DEL :multi-prefix sasl + // CAP NAK and CAP DEL replies are always single-line + + QStringList removedCaps; + removedCaps = e->params().at(2).split(' '); + + // Store the capabilities that were denied or removed + QString removedCap; + for (int i = 0; i < removedCaps.count(); ++i) { + removedCap = removedCaps[i].trimmed().toLower(); + // Mark this cap as removed. + // For CAP DEL, removes it from use. + // For CAP NAK when received before negotiation enabled these capabilities, removeCap() + // should do nothing. This merely guards against non-spec servers sending an + // unsolicited CAP ACK then later removing that capability. + coreNet->removeCap(removedCap); + } - if(e->params().count() == 3) { - if(e->params().at(2) == "sasl") { - // FIXME use event - coreNetwork(e)->putRawLine(coreNetwork(e)->serverEncode("AUTHENTICATE PLAIN")); // Only working with PLAIN atm, blowfish later + if (capCommand == "NAK") { + // Continue negotiation only if this is the result of denied caps, not removed caps + if (removedCaps.count() > 1) { + // We've received a CAP NAK reply to multiple capabilities at once. Unfortunately, + // we don't know which capability failed and which ones are valid to re-request, so + // individually retry each capability from the failed bundle. + // See CoreNetwork::retryCapsIndividually() for more details. + coreNet->retryCapsIndividually(); + // Still need to call sendNextCap() to carry on. + } + // Carry on with negotiation + coreNet->sendNextCap(); + } } - } } -void CoreSessionEventProcessor::processIrcEventInvite(IrcEvent *e) { - if(checkParamCount(e, 2)) { - e->network()->updateNickFromMask(e->prefix()); - } +/* IRCv3 account-notify + * Log in: ":nick!user@host ACCOUNT accountname" + * Log out: ":nick!user@host ACCOUNT *" */ +void CoreSessionEventProcessor::processIrcEventAccount(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; + + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); + if (ircuser) { + // WHOX uses '0' to indicate logged-out, account-notify and extended-join uses '*'. + // As '*' is used internally to represent logged-out, no need to handle that differently. + ircuser->setAccount(e->params().at(0)); + } + else { + qDebug() << "Received account-notify data for unknown user" << e->prefix(); + } } -void CoreSessionEventProcessor::processIrcEventJoin(IrcEvent *e) { - if(e->testFlag(EventManager::Fake)) // generated by handleEarlyNetsplitJoin - return; +/* IRCv3 away-notify - ":nick!user@host AWAY [:message]" */ +void CoreSessionEventProcessor::processIrcEventAway(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; + // Don't use checkParamCount(e, 2) since the message is optional. Some servers respond in a way + // that it counts as two parameters, but we shouldn't rely on that. + + // Nick is sent as part of parameters in order to split user/server decoding + IrcUser* ircuser = e->network()->ircUser(e->params().at(0)); + if (ircuser) { + // If two parameters are sent -and- the second parameter isn't empty, then user is away. + // Otherwise, mark them as not away. + if (e->params().count() >= 2 && !e->params().at(1).isEmpty()) { + ircuser->setAway(true); + ircuser->setAwayMessage(e->params().at(1)); + } + else { + ircuser->setAway(false); + } + } + else { + qDebug() << "Received away-notify data for unknown user" << e->params().at(0); + } +} - if(!checkParamCount(e, 1)) - return; +/* IRCv3 chghost - ":nick!user@host CHGHOST newuser new.host.goes.here" */ +void CoreSessionEventProcessor::processIrcEventChghost(IrcEvent* e) +{ + if (!checkParamCount(e, 2)) + return; + + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); + if (ircuser) { + // Update with new user/hostname information. setUser/setHost handles checking what + // actually changed. + ircuser->setUser(e->params().at(0)); + ircuser->setHost(e->params().at(1)); + } + else { + qDebug() << "Received chghost data for unknown user" << e->prefix(); + } +} - CoreNetwork *net = coreNetwork(e); - QString channel = e->params()[0]; - IrcUser *ircuser = net->updateNickFromMask(e->prefix()); +void CoreSessionEventProcessor::processIrcEventInvite(IrcEvent* e) +{ + if (checkParamCount(e, 2)) { + e->network()->updateNickFromMask(e->prefix()); + } +} - bool handledByNetsplit = false; - foreach(Netsplit* n, _netsplits.value(e->network())) { - handledByNetsplit = n->userJoined(e->prefix(), channel); - if(handledByNetsplit) - break; - } +/* JOIN: ": JOIN " */ +void CoreSessionEventProcessor::processIrcEventJoin(IrcEvent* e) +{ + if (e->testFlag(EventManager::Fake)) // generated by handleEarlyNetsplitJoin + return; + + if (!checkParamCount(e, 1)) + return; + + CoreNetwork* net = coreNetwork(e); + QString channel = e->params()[0]; + IrcUser* ircuser = net->updateNickFromMask(e->prefix()); + + if (net->capEnabled(IrcCap::EXTENDED_JOIN)) { + if (e->params().count() < 3) { + // Some IRC servers don't send extended-join events in all situations. Rather than + // ignore the join entirely, treat it as a regular join with a debug-level log entry. + // See: https://github.com/inspircd/inspircd/issues/821 + qDebug() << "extended-join requires 3 params, got:" << e->params() + << ", handling as a " + "regular join"; + } + else { + // If logged in, :nick!user@host JOIN #channelname accountname :Real Name + // If logged out, :nick!user@host JOIN #channelname * :Real Name + // See: http://ircv3.net/specs/extensions/extended-join-3.1.html + // WHOX uses '0' to indicate logged-out, account-notify and extended-join uses '*'. + // As '*' is used internally to represent logged-out, no need to handle that differently. + ircuser->setAccount(e->params()[1]); + // Update the user's real name, too + ircuser->setRealName(e->params()[2]); + } + } + // Else :nick!user@host JOIN #channelname - if(!handledByNetsplit) - ircuser->joinChannel(channel); - else - e->setFlag(EventManager::Netsplit); + bool handledByNetsplit = false; + for (Netsplit* n : _netsplits.value(e->network())) { + handledByNetsplit = n->userJoined(e->prefix(), channel); + if (handledByNetsplit) + break; + } - if(net->isMe(ircuser)) { - net->setChannelJoined(channel); - // FIXME use event - net->putRawLine(net->serverEncode("MODE " + channel)); // we want to know the modes of the channel we just joined, so we ask politely - } + // With "away-notify" enabled, some IRC servers forget to send :away messages for users who join + // channels while away. Unfortunately, working around this involves WHO'ng every single user as + // they join, which is not very efficient. If at all possible, it's better to get the issue + // fixed in the IRC server instead. + // + // If pursuing a workaround instead, this is where you'd do it. Check the version control + // history for the commit that added this comment to see how to implement it - there's some + // unexpected situations to watch out for! + // + // See https://ircv3.net/specs/extensions/away-notify-3.1.html + + if (!handledByNetsplit) + ircuser->joinChannel(channel); + else + e->setFlag(EventManager::Netsplit); + + if (net->isMe(ircuser)) { + net->setChannelJoined(channel); + // Mark the message as Self + e->setFlag(EventManager::Self); + // FIXME use event + net->putRawLine(net->serverEncode("MODE " + channel)); // we want to know the modes of the channel we just joined, so we ask politely + } } -void CoreSessionEventProcessor::lateProcessIrcEventKick(IrcEvent *e) { - if(checkParamCount(e, 2)) { - e->network()->updateNickFromMask(e->prefix()); - IrcUser *victim = e->network()->ircUser(e->params().at(1)); - if(victim) { - victim->partChannel(e->params().at(0)); - //if(e->network()->isMe(victim)) e->network()->setKickedFromChannel(channel); +void CoreSessionEventProcessor::lateProcessIrcEventKick(IrcEvent* e) +{ + if (checkParamCount(e, 2)) { + e->network()->updateNickFromMask(e->prefix()); + IrcUser* victim = e->network()->ircUser(e->params().at(1)); + if (victim) { + victim->partChannel(e->params().at(0)); + // if(e->network()->isMe(victim)) e->network()->setKickedFromChannel(channel); + } } - } } -void CoreSessionEventProcessor::processIrcEventMode(IrcEvent *e) { - if(!checkParamCount(e, 2)) - return; +void CoreSessionEventProcessor::processIrcEventMode(IrcEvent* e) +{ + if (!checkParamCount(e, 2)) + return; + + if (e->network()->isChannelName(e->params().first())) { + // Channel Modes + + IrcChannel* channel = e->network()->ircChannel(e->params()[0]); + if (!channel) { + // we received mode information for a channel we're not in. that means probably we've just been kicked out or something like + // that anyways: we don't have a place to store the data --> discard the info. + return; + } - if(e->network()->isChannelName(e->params().first())) { - // Channel Modes - - IrcChannel *channel = e->network()->ircChannel(e->params()[0]); - if(!channel) { - // we received mode information for a channel we're not in. that means probably we've just been kicked out or something like that - // anyways: we don't have a place to store the data --> discard the info. - return; - } - - QString modes = e->params()[1]; - bool add = true; - int paramOffset = 2; - for(int c = 0; c < modes.length(); c++) { - if(modes[c] == '+') { - add = true; - continue; - } - if(modes[c] == '-') { - add = false; - continue; - } - - if(e->network()->prefixModes().contains(modes[c])) { - // user channel modes (op, voice, etc...) - if(paramOffset < e->params().count()) { - IrcUser *ircUser = e->network()->ircUser(e->params()[paramOffset]); - if(!ircUser) { - qWarning() << Q_FUNC_INFO << "Unknown IrcUser:" << e->params()[paramOffset]; - } else { - if(add) { - bool handledByNetsplit = false; - QHash splits = _netsplits.value(e->network()); - foreach(Netsplit* n, _netsplits.value(e->network())) { - handledByNetsplit = n->userAlreadyJoined(ircUser->hostmask(), channel->name()); - if(handledByNetsplit) { - n->addMode(ircUser->hostmask(), channel->name(), QString(modes[c])); - break; + QString modes = e->params()[1]; + bool add = true; + int paramOffset = 2; + for (auto mode : modes) { + if (mode == '+') { + add = true; + continue; + } + if (mode == '-') { + add = false; + continue; + } + + if (e->network()->prefixModes().contains(mode)) { + // user channel modes (op, voice, etc...) + if (paramOffset < e->params().count()) { + IrcUser* ircUser = e->network()->ircUser(e->params()[paramOffset]); + if (!ircUser) { + qWarning() << Q_FUNC_INFO << "Unknown IrcUser:" << e->params()[paramOffset]; + } + else { + if (add) { + bool handledByNetsplit = false; + QHash splits = _netsplits.value(e->network()); + for (Netsplit* n : _netsplits.value(e->network())) { + handledByNetsplit = n->userAlreadyJoined(ircUser->hostmask(), channel->name()); + if (handledByNetsplit) { + n->addMode(ircUser->hostmask(), channel->name(), QString(mode)); + break; + } + } + if (!handledByNetsplit) + channel->addUserMode(ircUser, QString(mode)); + } + else + channel->removeUserMode(ircUser, QString(mode)); + } + } + else { + qWarning() << "Received MODE with too few parameters:" << e->params(); + } + ++paramOffset; + } + else { + // regular channel modes + QString value; + Network::ChannelModeType modeType = e->network()->channelModeType(mode); + if (modeType == Network::A_CHANMODE || modeType == Network::B_CHANMODE || (modeType == Network::C_CHANMODE && add)) { + if (paramOffset < e->params().count()) { + value = e->params()[paramOffset]; + } + else { + qWarning() << "Received MODE with too few parameters:" << e->params(); + } + ++paramOffset; } - } - if(!handledByNetsplit) - channel->addUserMode(ircUser, QString(modes[c])); + + if (add) + channel->addChannelMode(mode, value); + else + channel->removeChannelMode(mode, value); + } + } + } + else { + // pure User Modes + IrcUser* ircUser = e->network()->newIrcUser(e->params().first()); + QString modeString(e->params()[1]); + QString addModes; + QString removeModes; + bool add = false; + for (int c = 0; c < modeString.count(); c++) { + if (modeString[c] == '+') { + add = true; + continue; } + if (modeString[c] == '-') { + add = false; + continue; + } + if (add) + addModes += modeString[c]; else - channel->removeUserMode(ircUser, QString(modes[c])); - } - } else { - qWarning() << "Received MODE with too few parameters:" << e->params(); - } - ++paramOffset; - } else { - // regular channel modes - QString value; - Network::ChannelModeType modeType = e->network()->channelModeType(modes[c]); - if(modeType == Network::A_CHANMODE || modeType == Network::B_CHANMODE || (modeType == Network::C_CHANMODE && add)) { - if(paramOffset < e->params().count()) { - value = e->params()[paramOffset]; - } else { - qWarning() << "Received MODE with too few parameters:" << e->params(); - } - ++paramOffset; - } - - if(add) - channel->addChannelMode(modes[c], value); - else - channel->removeChannelMode(modes[c], value); - } - } - - } else { - // pure User Modes - IrcUser *ircUser = e->network()->newIrcUser(e->params().first()); - QString modeString(e->params()[1]); - QString addModes; - QString removeModes; - bool add = false; - for(int c = 0; c < modeString.count(); c++) { - if(modeString[c] == '+') { - add = true; - continue; - } - if(modeString[c] == '-') { - add = false; - continue; - } - if(add) - addModes += modeString[c]; - else - removeModes += modeString[c]; - } - if(!addModes.isEmpty()) - ircUser->addUserModes(addModes); - if(!removeModes.isEmpty()) - ircUser->removeUserModes(removeModes); - - if(e->network()->isMe(ircUser)) { - coreNetwork(e)->updatePersistentModes(addModes, removeModes); - } - } -} - -void CoreSessionEventProcessor::lateProcessIrcEventNick(IrcEvent *e) { - if(checkParamCount(e, 1)) { - IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix()); - if(!ircuser) { - qWarning() << Q_FUNC_INFO << "Unknown IrcUser!"; - return; - } - QString newnick = e->params().at(0); - QString oldnick = ircuser->nick(); - - // the order is cruicial - // otherwise the client would rename the buffer, see that the assigned ircuser doesn't match anymore - // and remove the ircuser from the querybuffer leading to a wrong on/offline state - ircuser->setNick(newnick); - coreSession()->renameBuffer(e->networkId(), newnick, oldnick); - } -} - -void CoreSessionEventProcessor::lateProcessIrcEventPart(IrcEvent *e) { - if(checkParamCount(e, 1)) { - IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix()); - if(!ircuser) { - qWarning() << Q_FUNC_INFO<< "Unknown IrcUser!"; - return; - } - QString channel = e->params().at(0); - ircuser->partChannel(channel); - if(e->network()->isMe(ircuser)) - qobject_cast(e->network())->setChannelParted(channel); - } -} - -void CoreSessionEventProcessor::processIrcEventPing(IrcEvent *e) { - QString param = e->params().count()? e->params().first() : QString(); - // FIXME use events - coreNetwork(e)->putRawLine("PONG " + coreNetwork(e)->serverEncode(param)); -} - -void CoreSessionEventProcessor::processIrcEventPong(IrcEvent *e) { - // the server is supposed to send back what we passed as param. and we send a timestamp - // but using quote and whatnought one can send arbitrary pings, so we have to do some sanity checks - if(checkParamCount(e, 2)) { - QString timestamp = e->params().at(1); - QTime sendTime = QTime::fromString(timestamp, "hh:mm:ss.zzz"); - if(sendTime.isValid()) - e->network()->setLatency(sendTime.msecsTo(QTime::currentTime()) / 2); - } + removeModes += modeString[c]; + } + if (!addModes.isEmpty()) + ircUser->addUserModes(addModes); + if (!removeModes.isEmpty()) + ircUser->removeUserModes(removeModes); + + if (e->network()->isMe(ircUser)) { + // Mark the message as Self + e->setFlag(EventManager::Self); + coreNetwork(e)->updatePersistentModes(addModes, removeModes); + } + } } -void CoreSessionEventProcessor::processIrcEventQuit(IrcEvent *e) { - IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix()); - if(!ircuser) - return; +void CoreSessionEventProcessor::processIrcEventNick(IrcEvent* e) +{ + if (checkParamCount(e, 1)) { + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); + if (!ircuser) { + qWarning() << Q_FUNC_INFO << "Unknown IrcUser!"; + return; + } + + if (e->network()->isMe(ircuser)) { + // Mark the message as Self + e->setFlag(EventManager::Self); + } - QString msg; - if(e->params().count() > 0) - msg = e->params()[0]; - - // check if netsplit - if(Netsplit::isNetsplit(msg)) { - Netsplit *n; - if(!_netsplits[e->network()].contains(msg)) { - n = new Netsplit(e->network(), this); - connect(n, SIGNAL(finished()), this, SLOT(handleNetsplitFinished())); - connect(n, SIGNAL(netsplitJoin(Network*,QString,QStringList,QStringList,QString)), - this, SLOT(handleNetsplitJoin(Network*,QString,QStringList,QStringList,QString))); - connect(n, SIGNAL(netsplitQuit(Network*,QString,QStringList,QString)), - this, SLOT(handleNetsplitQuit(Network*,QString,QStringList,QString))); - connect(n, SIGNAL(earlyJoin(Network*,QString,QStringList,QStringList)), - this, SLOT(handleEarlyNetsplitJoin(Network*,QString,QStringList,QStringList))); - _netsplits[e->network()].insert(msg, n); + // Actual processing is handled in lateProcessIrcEventNick(), this just sets the event flag + } +} + +void CoreSessionEventProcessor::lateProcessIrcEventNick(IrcEvent* e) +{ + if (checkParamCount(e, 1)) { + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); + if (!ircuser) { + qWarning() << Q_FUNC_INFO << "Unknown IrcUser!"; + return; + } + QString newnick = e->params().at(0); + QString oldnick = ircuser->nick(); + + // the order is cruicial + // otherwise the client would rename the buffer, see that the assigned ircuser doesn't match anymore + // and remove the ircuser from the querybuffer leading to a wrong on/offline state + ircuser->setNick(newnick); + coreSession()->renameBuffer(e->networkId(), newnick, oldnick); + } +} + +void CoreSessionEventProcessor::processIrcEventPart(IrcEvent* e) +{ + if (checkParamCount(e, 1)) { + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); + if (!ircuser) { + qWarning() << Q_FUNC_INFO << "Unknown IrcUser!"; + return; + } + + if (e->network()->isMe(ircuser)) { + // Mark the message as Self + e->setFlag(EventManager::Self); + } + + // Actual processing is handled in lateProcessIrcEventNick(), this just sets the event flag + } +} + +void CoreSessionEventProcessor::lateProcessIrcEventPart(IrcEvent* e) +{ + if (checkParamCount(e, 1)) { + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); + if (!ircuser) { + qWarning() << Q_FUNC_INFO << "Unknown IrcUser!"; + return; + } + QString channel = e->params().at(0); + ircuser->partChannel(channel); + if (e->network()->isMe(ircuser)) { + qobject_cast(e->network())->setChannelParted(channel); + } + } +} + +void CoreSessionEventProcessor::processIrcEventPing(IrcEvent* e) +{ + QString param = e->params().count() ? e->params().first() : QString(); + // FIXME use events + // Take priority so this won't get stuck behind other queued messages. + coreNetwork(e)->putRawLine("PONG " + coreNetwork(e)->serverEncode(param), true); +} + +void CoreSessionEventProcessor::processIrcEventPong(IrcEvent* e) +{ + // Ensure we get at least one parameter + if (!checkParamCount(e, 1)) + return; + + // Some IRC servers respond with only one parameter, others respond with two, with the latter + // being the text sent. Handle both situations. + QString timestamp; + if (e->params().count() < 2) { + // Only one parameter received + // :localhost PONG 02:43:49.565 + timestamp = e->params().at(0); } else { - n = _netsplits[e->network()][msg]; + // Two parameters received, pick the second + // :localhost PONG localhost :02:43:49.565 + timestamp = e->params().at(1); + } + + // The server is supposed to send back what we passed as parameter, and we send a timestamp. + // However, using quote and whatnot, one can send arbitrary pings, and IRC servers may decide to + // ignore our requests entirely and send whatever they want, so we have to do some sanity + // checks. + // + // Attempt to parse the timestamp + QTime sendTime = QTime::fromString(timestamp, "hh:mm:ss.zzz"); + if (sendTime.isValid()) { + // Mark IRC server as sending valid ping replies + if (!coreNetwork(e)->isPongTimestampValid()) { + coreNetwork(e)->setPongTimestampValid(true); + // Add a message the first time it happens + qDebug().nospace() << "Received PONG with valid timestamp, marking pong replies on " + "network " + << "\"" << qPrintable(e->network()->networkName()) + << "\" (ID: " << qPrintable(QString::number(e->network()->networkId().toInt())) + << ") as usable for latency measurement"; + } + // Remove pending flag + coreNetwork(e)->resetPongReplyPending(); + + // Don't show this in the UI + e->setFlag(EventManager::Silent); + // TODO: To allow for a user-sent /ping (without arguments, so default timestamp is used), + // this could track how many automated PINGs have been sent by the core and subtract one + // each time, only marking the PING as silent if there's pending automated pong replies. + // However, that's a behavior change which warrants further testing. For now, take the + // simpler, previous approach that errs on the side of silencing too much. + + // Calculate latency from time difference, divided by 2 to account for round-trip time + e->network()->setLatency(sendTime.msecsTo(QTime::currentTime()) / 2); } - // add this user to the netsplit - n->userQuit(e->prefix(), ircuser->channels(), msg); - e->setFlag(EventManager::Netsplit); - } - // normal quit is handled in lateProcessIrcEventQuit() + else if (coreNetwork(e)->isPongReplyPending() && !coreNetwork(e)->isPongTimestampValid()) { + // There's an auto-PING reply pending and we've not yet received a PONG reply with a valid + // timestamp. It's possible this server will never respond with a valid timestamp, and thus + // any automated PINGs will result in unwanted spamming of the server buffer. + + // Don't show this in the UI + e->setFlag(EventManager::Silent); + // Remove pending flag + coreNetwork(e)->resetPongReplyPending(); + + // Log a message + qDebug().nospace() << "Received PONG with invalid timestamp from network " + << "\"" << qPrintable(e->network()->networkName()) + << "\" (ID: " << qPrintable(QString::number(e->network()->networkId().toInt())) + << "), silencing, parameters are " << e->params(); + } + // else: We're not expecting a PONG reply and timestamp is not valid, assume it's from the user } -void CoreSessionEventProcessor::lateProcessIrcEventQuit(IrcEvent *e) { - if(e->testFlag(EventManager::Netsplit)) - return; +void CoreSessionEventProcessor::processIrcEventQuit(IrcEvent* e) +{ + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); + if (!ircuser) + return; - IrcUser *ircuser = e->network()->updateNickFromMask(e->prefix()); - if(!ircuser) - return; + if (e->network()->isMe(ircuser)) { + // Mark the message as Self + e->setFlag(EventManager::Self); + } - ircuser->quit(); + QString msg; + if (e->params().count() > 0) + msg = e->params()[0]; + + // check if netsplit + if (Netsplit::isNetsplit(msg)) { + Netsplit* n; + if (!_netsplits[e->network()].contains(msg)) { + n = new Netsplit(e->network(), this); + connect(n, &Netsplit::finished, this, &CoreSessionEventProcessor::handleNetsplitFinished); + connect(n, &Netsplit::netsplitJoin, this, &CoreSessionEventProcessor::handleNetsplitJoin); + connect(n, &Netsplit::netsplitQuit, this, &CoreSessionEventProcessor::handleNetsplitQuit); + connect(n, &Netsplit::earlyJoin, this, &CoreSessionEventProcessor::handleEarlyNetsplitJoin); + _netsplits[e->network()].insert(msg, n); + } + else { + n = _netsplits[e->network()][msg]; + } + // add this user to the netsplit + n->userQuit(e->prefix(), ircuser->channels(), msg); + e->setFlag(EventManager::Netsplit); + } + // normal quit is handled in lateProcessIrcEventQuit() } -void CoreSessionEventProcessor::processIrcEventTopic(IrcEvent *e) { - if(checkParamCount(e, 2)) { - e->network()->updateNickFromMask(e->prefix()); - IrcChannel *channel = e->network()->ircChannel(e->params().at(0)); - if(channel) - channel->setTopic(e->params().at(1)); - } +void CoreSessionEventProcessor::lateProcessIrcEventQuit(IrcEvent* e) +{ + if (e->testFlag(EventManager::Netsplit)) + return; + + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); + if (!ircuser) + return; + + ircuser->quit(); } -/* RPL_WELCOME */ -void CoreSessionEventProcessor::processIrcEvent001(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEventTopic(IrcEvent* e) +{ + if (checkParamCount(e, 2)) { + IrcUser* ircuser = e->network()->updateNickFromMask(e->prefix()); - QString myhostmask = e->params().at(0).section(' ', -1, -1); - e->network()->setCurrentServer(e->prefix()); - e->network()->setMyNick(nickFromMask(myhostmask)); + if (e->network()->isMe(ircuser)) { + // Mark the message as Self + e->setFlag(EventManager::Self); + } + + IrcChannel* channel = e->network()->ircChannel(e->params().at(0)); + if (channel) + channel->setTopic(e->params().at(1)); + } +} + +/* ERROR - "ERROR :reason" +Example: ERROR :Closing Link: nickname[xxx.xxx.xxx.xxx] (Large base64 image paste.) +See https://tools.ietf.org/html/rfc2812#section-3.7.4 */ +void CoreSessionEventProcessor::processIrcEventError(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; + + if (coreNetwork(e)->disconnectExpected()) { + // During QUIT, the server should send an error (often, but not always, "Closing Link"). As + // we're expecting it, don't show this to the user. + e->setFlag(EventManager::Silent); + } +} + +#ifdef HAVE_QCA2 +void CoreSessionEventProcessor::processKeyEvent(KeyEvent* e) +{ + if (!Cipher::neededFeaturesAvailable()) { + 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())); + return; + } + auto* net = qobject_cast(e->network()); + Cipher* c = net->cipher(e->target()); + if (!c) // happens when there is no CoreIrcChannel for the target (i.e. never?) + return; + + if (e->exchangeType() == KeyEvent::Init) { + QByteArray pubKey = c->parseInitKeyX(e->key()); + if (pubKey.isEmpty()) { + 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())); + return; + } + else { + net->setCipherKey(e->target(), c->key()); + 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())); + QList p; + p << net->serverEncode(e->target()) << net->serverEncode("DH1080_FINISH ") + pubKey; + net->putCmd("NOTICE", p); + } + } + else { + if (c->parseFinishKeyX(e->key())) { + net->setCipherKey(e->target(), c->key()); + 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())); + } + else { + 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())); + } + } +} +#endif + +/* RPL_WELCOME */ +void CoreSessionEventProcessor::processIrcEvent001(IrcEventNumeric* e) +{ + e->network()->setCurrentServer(e->prefix()); + e->network()->setMyNick(e->target()); } /* RPL_ISUPPORT */ // TODO Complete 005 handling, also use sensible defaults for non-sent stuff -void CoreSessionEventProcessor::processIrcEvent005(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; - - QString key, value; - for(int i = 0; i < e->params().count() - 1; i++) { - QString key = e->params()[i].section("=", 0, 0); - QString value = e->params()[i].section("=", 1); - e->network()->addSupport(key, value); - } +void CoreSessionEventProcessor::processIrcEvent005(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; + + QString key, value; + for (int i = 0; i < e->params().count() - 1; i++) { + QString key = e->params()[i].section("=", 0, 0); + QString value = e->params()[i].section("=", 1); + e->network()->addSupport(key, value); + } - /* determine our prefixes here to get an accurate result */ - e->network()->determinePrefixes(); + /* determine our prefixes here to get an accurate result */ + e->network()->determinePrefixes(); } /* RPL_UMODEIS - " []" */ -void CoreSessionEventProcessor::processIrcEvent221(IrcEvent *) { - // TODO: save information in network object +void CoreSessionEventProcessor::processIrcEvent221(IrcEvent*) +{ + // TODO: save information in network object } /* RPL_STATSCONN - "Highest connection cout: 8000 (7999 clients)" */ -void CoreSessionEventProcessor::processIrcEvent250(IrcEvent *) { - // TODO: save information in network object +void CoreSessionEventProcessor::processIrcEvent250(IrcEvent*) +{ + // TODO: save information in network object } /* RPL_LOCALUSERS - "Current local user: 5024 Max: 7999 */ -void CoreSessionEventProcessor::processIrcEvent265(IrcEvent *) { - // TODO: save information in network object +void CoreSessionEventProcessor::processIrcEvent265(IrcEvent*) +{ + // TODO: save information in network object } /* RPL_GLOBALUSERS - "Current global users: 46093 Max: 47650" */ -void CoreSessionEventProcessor::processIrcEvent266(IrcEvent *) { - // TODO: save information in network object +void CoreSessionEventProcessor::processIrcEvent266(IrcEvent*) +{ + // TODO: save information in network object } /* @@ -436,282 +922,488 @@ WHOWAS-Message: */ /* RPL_AWAY - " :" */ -void CoreSessionEventProcessor::processIrcEvent301(IrcEvent *e) { - if(!checkParamCount(e, 2)) - return; - - IrcUser *ircuser = e->network()->ircUser(e->params().at(0)); - if(ircuser) { - ircuser->setAway(true); - ircuser->setAwayMessage(e->params().at(1)); - //ircuser->setLastAwayMessage(now); - } +void CoreSessionEventProcessor::processIrcEvent301(IrcEvent* e) +{ + if (!checkParamCount(e, 2)) + return; + + IrcUser* ircuser = e->network()->ircUser(e->params().at(0)); + if (ircuser) { + ircuser->setAway(true); + ircuser->setAwayMessage(e->params().at(1)); + // lastAwayMessageTime is set in EventStringifier::processIrcEvent301(), no need to set it + // here too + // ircuser->setLastAwayMessageTime(now); + } } /* RPL_UNAWAY - ":You are no longer marked as being away" */ -void CoreSessionEventProcessor::processIrcEvent305(IrcEvent *e) { - IrcUser *me = e->network()->me(); - if(me) - me->setAway(false); +void CoreSessionEventProcessor::processIrcEvent305(IrcEvent* e) +{ + IrcUser* me = e->network()->me(); + if (me) + me->setAway(false); - if(e->network()->autoAwayActive()) { - e->network()->setAutoAwayActive(false); - e->setFlag(EventManager::Silent); - } + if (e->network()->autoAwayActive()) { + e->network()->setAutoAwayActive(false); + e->setFlag(EventManager::Silent); + } } /* RPL_NOWAWAY - ":You have been marked as being away" */ -void CoreSessionEventProcessor::processIrcEvent306(IrcEvent *e) { - IrcUser *me = e->network()->me(); - if(me) - me->setAway(true); +void CoreSessionEventProcessor::processIrcEvent306(IrcEvent* e) +{ + IrcUser* me = e->network()->me(); + if (me) + me->setAway(true); } /* RPL_WHOISSERVICE - " is registered nick" */ -void CoreSessionEventProcessor::processIrcEvent307(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEvent307(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; - IrcUser *ircuser = e->network()->ircUser(e->params().at(0)); - if(ircuser) - ircuser->setWhoisServiceReply(e->params().join(" ")); + IrcUser* ircuser = e->network()->ircUser(e->params().at(0)); + if (ircuser) + ircuser->setWhoisServiceReply(e->params().join(" ")); } /* RPL_SUSERHOST - " is available for help." */ -void CoreSessionEventProcessor::processIrcEvent310(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEvent310(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; - IrcUser *ircuser = e->network()->ircUser(e->params().at(0)); - if(ircuser) - ircuser->setSuserHost(e->params().join(" ")); + IrcUser* ircuser = e->network()->ircUser(e->params().at(0)); + if (ircuser) + ircuser->setSuserHost(e->params().join(" ")); } /* RPL_WHOISUSER - " * :" */ -void CoreSessionEventProcessor::processIrcEvent311(IrcEvent *e) { - if(!checkParamCount(e, 3)) - return; - - IrcUser *ircuser = e->network()->ircUser(e->params().at(0)); - if(ircuser) { - ircuser->setUser(e->params().at(1)); - ircuser->setHost(e->params().at(2)); - ircuser->setRealName(e->params().last()); - } +void CoreSessionEventProcessor::processIrcEvent311(IrcEvent* e) +{ + if (!checkParamCount(e, 3)) + return; + + IrcUser* ircuser = e->network()->ircUser(e->params().at(0)); + if (ircuser) { + ircuser->setUser(e->params().at(1)); + ircuser->setHost(e->params().at(2)); + ircuser->setRealName(e->params().last()); + } } /* RPL_WHOISSERVER - " :" */ -void CoreSessionEventProcessor::processIrcEvent312(IrcEvent *e) { - if(!checkParamCount(e, 2)) - return; +void CoreSessionEventProcessor::processIrcEvent312(IrcEvent* e) +{ + if (!checkParamCount(e, 2)) + return; - IrcUser *ircuser = e->network()->ircUser(e->params().at(0)); - if(ircuser) - ircuser->setServer(e->params().at(1)); + IrcUser* ircuser = e->network()->ircUser(e->params().at(0)); + if (ircuser) + ircuser->setServer(e->params().at(1)); } /* RPL_WHOISOPERATOR - " :is an IRC operator" */ -void CoreSessionEventProcessor::processIrcEvent313(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEvent313(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; - IrcUser *ircuser = e->network()->ircUser(e->params().at(0)); - if(ircuser) - ircuser->setIrcOperator(e->params().last()); + IrcUser* ircuser = e->network()->ircUser(e->params().at(0)); + if (ircuser) + ircuser->setIrcOperator(e->params().last()); } /* RPL_ENDOFWHO: " :End of WHO list" */ -void CoreSessionEventProcessor::processIrcEvent315(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEvent315(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; - if(coreNetwork(e)->setAutoWhoDone(e->params()[0])) - e->setFlag(EventManager::Silent); + if (coreNetwork(e)->setAutoWhoDone(e->params()[0])) + e->setFlag(EventManager::Silent); } /* RPL_WHOISIDLE - " :seconds idle" (real life: " :seconds idle, signon time) */ -void CoreSessionEventProcessor::processIrcEvent317(IrcEvent *e) { - if(!checkParamCount(e, 2)) - return; - - QDateTime loginTime; - - int idleSecs = e->params()[1].toInt(); - if(e->params().count() > 3) { // if we have more then 3 params we have the above mentioned "real life" situation - int logintime = e->params()[2].toInt(); - loginTime = QDateTime::fromTime_t(logintime); - } +void CoreSessionEventProcessor::processIrcEvent317(IrcEvent* e) +{ + if (!checkParamCount(e, 2)) + return; + + QDateTime loginTime; + + int idleSecs = e->params()[1].toInt(); + if (e->params().count() > 3) { // if we have more then 3 params we have the above mentioned "real life" situation + // Allow for 64-bit time + qint64 logintime = e->params()[2].toLongLong(); + // Time in IRC protocol is defined as seconds. Convert from seconds instead. + // See https://doc.qt.io/qt-5/qdatetime.html#fromSecsSinceEpoch +#if QT_VERSION >= 0x050800 + loginTime = QDateTime::fromSecsSinceEpoch(logintime); +#else + // fromSecsSinceEpoch() was added in Qt 5.8. Manually downconvert to seconds for + // now. + // See https://doc.qt.io/qt-5/qdatetime.html#fromMSecsSinceEpoch + loginTime = QDateTime::fromMSecsSinceEpoch((qint64)(logintime * 1000)); +#endif + } - IrcUser *ircuser = e->network()->ircUser(e->params()[0]); - if(ircuser) { - ircuser->setIdleTime(e->timestamp().addSecs(-idleSecs)); - if(loginTime.isValid()) - ircuser->setLoginTime(loginTime); - } + IrcUser* ircuser = e->network()->ircUser(e->params()[0]); + if (ircuser) { + ircuser->setIdleTime(e->timestamp().addSecs(-idleSecs)); + if (loginTime.isValid()) + ircuser->setLoginTime(loginTime); + } } /* RPL_LIST - " <# visible> :" */ -void CoreSessionEventProcessor::processIrcEvent322(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; - - QString channelName; - quint32 userCount = 0; - QString topic; - - switch(e->params().count()) { - case 3: - topic = e->params()[2]; - case 2: - userCount = e->params()[1].toUInt(); - case 1: - channelName = e->params()[0]; - default: - break; - } - if(coreSession()->ircListHelper()->addChannel(e->networkId(), channelName, userCount, topic)) - e->stop(); // consumed by IrcListHelper, so don't further process/show this event +void CoreSessionEventProcessor::processIrcEvent322(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; + + QString channelName; + quint32 userCount = 0; + QString topic; + + switch (e->params().count()) { + case 3: + topic = e->params()[2]; + // fallthrough + case 2: + userCount = e->params()[1].toUInt(); + // fallthrough + case 1: + channelName = e->params()[0]; + // fallthrough + default: + break; + } + if (coreSession()->ircListHelper()->addChannel(e->networkId(), channelName, userCount, topic)) + e->stop(); // consumed by IrcListHelper, so don't further process/show this event } /* RPL_LISTEND ":End of LIST" */ -void CoreSessionEventProcessor::processIrcEvent323(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEvent323(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; - if(coreSession()->ircListHelper()->endOfChannelList(e->networkId())) - e->stop(); // consumed by IrcListHelper, so don't further process/show this event + if (coreSession()->ircListHelper()->endOfChannelList(e->networkId())) + e->stop(); // consumed by IrcListHelper, so don't further process/show this event } /* RPL_CHANNELMODEIS - " " */ -void CoreSessionEventProcessor::processIrcEvent324(IrcEvent *e) { - processIrcEventMode(e); +void CoreSessionEventProcessor::processIrcEvent324(IrcEvent* e) +{ + processIrcEventMode(e); +} + +/* RPL_WHOISACCOUNT - " :is authed as" */ +void CoreSessionEventProcessor::processIrcEvent330(IrcEvent* e) +{ + // Though the ":is authed as" remark should always be there, we should handle cases when it's + // not included, too. + if (!checkParamCount(e, 2)) + return; + + IrcUser* ircuser = e->network()->ircUser(e->params().at(0)); + if (ircuser) { + ircuser->setAccount(e->params().at(1)); + } } /* RPL_NOTOPIC */ -void CoreSessionEventProcessor::processIrcEvent331(IrcEvent *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEvent331(IrcEvent* e) +{ + if (!checkParamCount(e, 1)) + return; - IrcChannel *chan = e->network()->ircChannel(e->params()[0]); - if(chan) - chan->setTopic(QString()); + IrcChannel* chan = e->network()->ircChannel(e->params()[0]); + if (chan) + chan->setTopic(QString()); } /* RPL_TOPIC */ -void CoreSessionEventProcessor::processIrcEvent332(IrcEvent *e) { - if(!checkParamCount(e, 2)) - return; +void CoreSessionEventProcessor::processIrcEvent332(IrcEvent* e) +{ + if (!checkParamCount(e, 2)) + return; - IrcChannel *chan = e->network()->ircChannel(e->params()[0]); - if(chan) - chan->setTopic(e->params()[1]); + IrcChannel* chan = e->network()->ircChannel(e->params()[0]); + if (chan) + chan->setTopic(e->params()[1]); } /* RPL_WHOREPLY: " ( "H" / "G" > ["*"] [ ( "@" / "+" ) ] : " */ -void CoreSessionEventProcessor::processIrcEvent352(IrcEvent *e) { - if(!checkParamCount(e, 6)) - return; - - QString channel = e->params()[0]; - IrcUser *ircuser = e->network()->ircUser(e->params()[4]); - if(ircuser) { - ircuser->setUser(e->params()[1]); - ircuser->setHost(e->params()[2]); - - bool away = e->params()[5].startsWith("G"); - ircuser->setAway(away); - ircuser->setServer(e->params()[3]); - ircuser->setRealName(e->params().last().section(" ", 1)); - } +void CoreSessionEventProcessor::processIrcEvent352(IrcEvent* e) +{ + if (!checkParamCount(e, 6)) + return; + + QString channel = e->params()[0]; + IrcUser* ircuser = e->network()->ircUser(e->params()[4]); + if (ircuser) { + // Only process the WHO information if an IRC user exists. Don't create an IRC user here; + // there's no way to track when the user quits, which would leave a phantom IrcUser lying + // around. + // NOTE: Whenever MONITOR support is introduced, the IrcUser will be created by an + // RPL_MONONLINE numeric before any WHO commands are run. + processWhoInformation(e->network(), + channel, + ircuser, + e->params()[3], + e->params()[1], + e->params()[2], + e->params()[5], + e->params().last().section(" ", 1)); + } - if(coreNetwork(e)->isAutoWhoInProgress(channel)) - e->setFlag(EventManager::Silent); + // Check if channel name has a who in progress. + if (coreNetwork(e)->isAutoWhoInProgress(channel)) { + e->setFlag(EventManager::Silent); + } } /* RPL_NAMREPLY */ -void CoreSessionEventProcessor::processIrcEvent353(IrcEvent *e) { - if(!checkParamCount(e, 3)) - return; +void CoreSessionEventProcessor::processIrcEvent353(IrcEvent* e) +{ + if (!checkParamCount(e, 3)) + return; - // param[0] is either "=", "*" or "@" indicating a public, private or secret channel - // we don't use this information at the time beeing - QString channelname = e->params()[1]; + // param[0] is either "=", "*" or "@" indicating a public, private or secret channel + // we don't use this information at the time beeing + QString channelname = e->params()[1]; - IrcChannel *channel = e->network()->ircChannel(channelname); - if(!channel) { - qWarning() << Q_FUNC_INFO << "Received unknown target channel:" << channelname; - return; - } + IrcChannel* channel = e->network()->ircChannel(channelname); + if (!channel) { + qWarning() << Q_FUNC_INFO << "Received unknown target channel:" << channelname; + return; + } - QStringList nicks; - QStringList modes; + QStringList nicks; + QStringList modes; + + // Cache result of multi-prefix to avoid unneeded casts and lookups with each iteration. + bool _useCapMultiPrefix = coreNetwork(e)->capEnabled(IrcCap::MULTI_PREFIX); + + for (QString nick : e->params()[2].split(' ', QString::SkipEmptyParts)) { + QString mode; + + if (_useCapMultiPrefix) { + // If multi-prefix is enabled, all modes will be sent in NAMES replies. + // :hades.arpa 353 guest = #tethys :~&@%+aji &@Attila @+alyx +KindOne Argure + // See: http://ircv3.net/specs/extensions/multi-prefix-3.1.html + while (e->network()->prefixes().contains(nick[0])) { + // Mode found in 1 left-most character, add it to the list. + // Note: sending multiple modes may cause a warning in older clients. + // In testing, the clients still seemed to function fine. + mode.append(e->network()->prefixToMode(nick[0])); + // Remove this mode from the nick + nick = nick.remove(0, 1); + } + } + else if (e->network()->prefixes().contains(nick[0])) { + // Multi-prefix is disabled and a mode prefix was found. + mode = e->network()->prefixToMode(nick[0]); + nick = nick.mid(1); + } - foreach(QString nick, e->params()[2].split(' ')) { - QString mode; + // If userhost-in-names capability is enabled, the following will be + // in the form "nick!user@host" rather than "nick". This works without + // special handling as the following use nickFromHost() as needed. + // See: http://ircv3.net/specs/extensions/userhost-in-names-3.2.html - if(e->network()->prefixes().contains(nick[0])) { - mode = e->network()->prefixToMode(nick[0]); - nick = nick.mid(1); + nicks << nick; + modes << mode; } - nicks << nick; - modes << mode; - } + channel->joinIrcUsers(nicks, modes); +} + +/* RPL_WHOSPCRPL: " 152 # ~ + ("H"/ "G") :" + is * if not specific to any channel + is * if not logged in +Follows HexChat's usage of 'whox' +See https://github.com/hexchat/hexchat/blob/c874a9525c9b66f1d5ddcf6c4107d046eba7e2c5/src/common/proto-irc.c#L750 +And http://faerion.sourceforge.net/doc/irc/whox.var*/ +void CoreSessionEventProcessor::processIrcEvent354(IrcEvent* e) +{ + // First only check if at least one parameter exists. Otherwise, it'll stop the result from + // being shown if the user chooses different parameters. + if (!checkParamCount(e, 1)) + return; + + if (e->params()[0].toUInt() != IrcCap::ACCOUNT_NOTIFY_WHOX_NUM) { + // Ignore WHOX replies without expected number for we have no idea what fields are specified + return; + } - channel->joinIrcUsers(nicks, modes); + // Now we're fairly certain this is supposed to be an automated WHOX. Bail out if it doesn't + // match what we require - 9 parameters. + if (!checkParamCount(e, 9)) + return; + + QString channel = e->params()[1]; + IrcUser* ircuser = e->network()->ircUser(e->params()[5]); + if (ircuser) { + // Only process the WHO information if an IRC user exists. Don't create an IRC user here; + // there's no way to track when the user quits, which would leave a phantom IrcUser lying + // around. + // NOTE: Whenever MONITOR support is introduced, the IrcUser will be created by an + // RPL_MONONLINE numeric before any WHO commands are run. + processWhoInformation(e->network(), channel, ircuser, e->params()[4], e->params()[2], e->params()[3], e->params()[6], e->params().last()); + // Don't use .section(" ", 1) with WHOX replies, for there's no hopcount to trim out + + // As part of IRCv3 account-notify, check account name + // WHOX uses '0' to indicate logged-out, account-notify and extended-join uses '*'. + QString newAccount = e->params()[7]; + if (newAccount != "0") { + // Account logged in, set account name + ircuser->setAccount(newAccount); + } + else { + // Account logged out, set account name to logged-out + ircuser->setAccount("*"); + } + } + + // Check if channel name has a who in progress. + if (coreNetwork(e)->isAutoWhoInProgress(channel)) { + e->setFlag(EventManager::Silent); + } } -/* ERR_ERRONEUSNICKNAME */ -void CoreSessionEventProcessor::processIrcEvent432(IrcEventNumeric *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processWhoInformation(Network* net, + const QString& targetChannel, + IrcUser* ircUser, + const QString& server, + const QString& user, + const QString& host, + const QString& awayStateAndModes, + const QString& realname) +{ + ircUser->setUser(user); + ircUser->setHost(host); + ircUser->setServer(server); + ircUser->setRealName(realname); + + bool away = awayStateAndModes.contains("G", Qt::CaseInsensitive); + ircUser->setAway(away); + + if (net->capEnabled(IrcCap::MULTI_PREFIX)) { + // If multi-prefix is enabled, all modes will be sent in WHO replies. + // :kenny.chatspike.net 352 guest #test grawity broken.symlink *.chatspike.net grawity H@%+ :0 Mantas M. + // See: http://ircv3.net/specs/extensions/multi-prefix-3.1.html + QString uncheckedModes = awayStateAndModes; + QString validModes = QString(); + while (!uncheckedModes.isEmpty()) { + // Mode found in 1 left-most character, add it to the list + if (net->prefixes().contains(uncheckedModes[0])) { + validModes.append(net->prefixToMode(uncheckedModes[0])); + } + // Remove this mode from the list of unchecked modes + uncheckedModes = uncheckedModes.remove(0, 1); + } + + // Some IRC servers decide to not follow the spec, returning only -some- of the user + // modes in WHO despite listing them all in NAMES. For now, assume it can only add + // and not take away. *sigh* + if (!validModes.isEmpty()) { + if (targetChannel != "*") { + // Channel-specific modes received, apply to given channel only + IrcChannel* ircChan = net->ircChannel(targetChannel); + if (ircChan) { + // Do one mode at a time + // TODO Better way of syncing this without breaking protocol? + for (int i = 0; i < validModes.count(); ++i) { + ircChan->addUserMode(ircUser, validModes.at(i)); + } + } + } + else { + // Modes apply to the user everywhere + ircUser->addUserModes(validModes); + } + } + } +} + +/* ERR_NOSUCHCHANNEL - " :No such channel" */ +void CoreSessionEventProcessor::processIrcEvent403(IrcEventNumeric* e) +{ + // If this is the result of an AutoWho, hide it. It's confusing to show to the user. + // Though the ":No such channel" remark should always be there, we should handle cases when it's + // not included, too. + if (!checkParamCount(e, 1)) + return; + + QString channelOrNick = e->params()[0]; + // Check if channel name has a who in progress. + // If not, then check if user nick exists and has a who in progress. + if (coreNetwork(e)->isAutoWhoInProgress(channelOrNick)) { + qDebug() << "Channel/nick" << channelOrNick << "no longer exists during AutoWho, ignoring"; + e->setFlag(EventManager::Silent); + } +} - QString errnick; - if(e->params().count() < 2) { - // handle unreal-ircd bug, where unreal ircd doesnt supply a TARGET in ERR_ERRONEUSNICKNAME during registration phase: - // nick @@@ - // :irc.scortum.moep.net 432 @@@ :Erroneous Nickname: Illegal characters - // correct server reply: - // :irc.scortum.moep.net 432 * @@@ :Erroneous Nickname: Illegal characters - e->params().prepend(e->target()); - e->setTarget("*"); - } - errnick = e->params()[0]; +/* ERR_ERRONEUSNICKNAME */ +void CoreSessionEventProcessor::processIrcEvent432(IrcEventNumeric* e) +{ + if (!checkParamCount(e, 1)) + return; + + QString errnick; + if (e->params().count() < 2) { + // handle unreal-ircd bug, where unreal ircd doesnt supply a TARGET in ERR_ERRONEUSNICKNAME during registration phase: + // nick @@@ + // :irc.scortum.moep.net 432 @@@ :Erroneous Nickname: Illegal characters + // correct server reply: + // :irc.scortum.moep.net 432 * @@@ :Erroneous Nickname: Illegal characters + e->params().prepend(e->target()); + e->setTarget("*"); + } + errnick = e->params()[0]; - tryNextNick(e, errnick, true /* erroneus */); + tryNextNick(e, errnick, true /* erroneus */); } /* ERR_NICKNAMEINUSE */ -void CoreSessionEventProcessor::processIrcEvent433(IrcEventNumeric *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEvent433(IrcEventNumeric* e) +{ + if (!checkParamCount(e, 1)) + return; - QString errnick = e->params().first(); + QString errnick = e->params().first(); - // if there is a problem while connecting to the server -> we handle it - // but only if our connection has not been finished yet... - if(!e->network()->currentServer().isEmpty()) - return; + // if there is a problem while connecting to the server -> we handle it + // but only if our connection has not been finished yet... + if (!e->network()->currentServer().isEmpty()) + return; - tryNextNick(e, errnick); + tryNextNick(e, errnick); } /* ERR_UNAVAILRESOURCE */ -void CoreSessionEventProcessor::processIrcEvent437(IrcEventNumeric *e) { - if(!checkParamCount(e, 1)) - return; +void CoreSessionEventProcessor::processIrcEvent437(IrcEventNumeric* e) +{ + if (!checkParamCount(e, 1)) + return; - QString errnick = e->params().first(); + QString errnick = e->params().first(); - // if there is a problem while connecting to the server -> we handle it - // but only if our connection has not been finished yet... - if(!e->network()->currentServer().isEmpty()) - return; + // if there is a problem while connecting to the server -> we handle it + // but only if our connection has not been finished yet... + if (!e->network()->currentServer().isEmpty()) + return; - if(!e->network()->isChannelName(errnick)) - tryNextNick(e, errnick); + if (!e->network()->isChannelName(errnick)) + tryNextNick(e, errnick); } /* template @@ -724,135 +1416,223 @@ void CoreSessionEventProcessor::processIrcEvent(IrcEvent *e) { /* Handle signals from Netsplit objects */ -void CoreSessionEventProcessor::handleNetsplitJoin(Network *net, - const QString &channel, - const QStringList &users, - const QStringList &modes, - const QString& quitMessage) +void CoreSessionEventProcessor::handleNetsplitJoin( + Network* net, const QString& channel, const QStringList& users, const QStringList& modes, const QString& quitMessage) { - IrcChannel *ircChannel = net->ircChannel(channel); - if(!ircChannel) { - return; - } - QList ircUsers; - QStringList newModes = modes; - QStringList newUsers = users; - - foreach(const QString &user, users) { - IrcUser *iu = net->ircUser(nickFromMask(user)); - if(iu) - ircUsers.append(iu); - else { // the user already quit - int idx = users.indexOf(user); - newUsers.removeAt(idx); - newModes.removeAt(idx); - } - } - - ircChannel->joinIrcUsers(ircUsers, newModes); - NetworkSplitEvent *event = new NetworkSplitEvent(EventManager::NetworkSplitJoin, net, channel, newUsers, quitMessage); - emit newEvent(event); -} - -void CoreSessionEventProcessor::handleNetsplitQuit(Network *net, const QString &channel, const QStringList &users, const QString& quitMessage) { - NetworkSplitEvent *event = new NetworkSplitEvent(EventManager::NetworkSplitQuit, net, channel, users, quitMessage); - emit newEvent(event); - foreach(QString user, users) { - IrcUser *iu = net->ircUser(nickFromMask(user)); - if(iu) - iu->quit(); - } -} - -void CoreSessionEventProcessor::handleEarlyNetsplitJoin(Network *net, const QString &channel, const QStringList &users, const QStringList &modes) { - IrcChannel *ircChannel = net->ircChannel(channel); - if(!ircChannel) { - qDebug() << "handleEarlyNetsplitJoin(): channel " << channel << " invalid"; - return; - } - QList events; - QList ircUsers; - QStringList newModes = modes; - - foreach(QString user, users) { - IrcUser *iu = net->updateNickFromMask(user); - if(iu) { - ircUsers.append(iu); - // fake event for scripts that consume join events - events << new IrcEvent(EventManager::IrcEventJoin, net, iu->hostmask(), QStringList() << channel); + IrcChannel* ircChannel = net->ircChannel(channel); + if (!ircChannel) { + return; } - else { - newModes.removeAt(users.indexOf(user)); + QList ircUsers; + QStringList newModes = modes; + QStringList newUsers = users; + + for (const QString& user : users) { + IrcUser* iu = net->ircUser(nickFromMask(user)); + if (iu) + ircUsers.append(iu); + else { // the user already quit + int idx = users.indexOf(user); + newUsers.removeAt(idx); + newModes.removeAt(idx); + } } - } - ircChannel->joinIrcUsers(ircUsers, newModes); - foreach(NetworkEvent *event, events) { - event->setFlag(EventManager::Fake); // ignore this in here! + + ircChannel->joinIrcUsers(ircUsers, newModes); + NetworkSplitEvent* event = new NetworkSplitEvent(EventManager::NetworkSplitJoin, net, channel, newUsers, quitMessage); + emit newEvent(event); +} + +void CoreSessionEventProcessor::handleNetsplitQuit(Network* net, const QString& channel, const QStringList& users, const QString& quitMessage) +{ + NetworkSplitEvent* event = new NetworkSplitEvent(EventManager::NetworkSplitQuit, net, channel, users, quitMessage); emit newEvent(event); - } + for (const QString& user : users) { + IrcUser* ircUser = net->ircUser(nickFromMask(user)); + if (ircUser) ircUser->quit(); + } } -void CoreSessionEventProcessor::handleNetsplitFinished() { - Netsplit* n = qobject_cast(sender()); - Q_ASSERT(n); - QHash splithash = _netsplits.take(n->network()); - splithash.remove(splithash.key(n)); - if(splithash.count()) - _netsplits[n->network()] = splithash; - n->deleteLater(); +void CoreSessionEventProcessor::handleEarlyNetsplitJoin(Network* net, const QString& channel, const QStringList& users, const QStringList& modes) +{ + IrcChannel* ircChannel = net->ircChannel(channel); + if (!ircChannel) { + qDebug() << "handleEarlyNetsplitJoin(): channel " << channel << " invalid"; + return; + } + QList events; + QList ircUsers; + QStringList newModes = modes; + + for (const QString& user : users) { + IrcUser* ircUser = net->updateNickFromMask(user); + if (ircUser) { + ircUsers.append(ircUser); + // fake event for scripts that consume join events + events << new IrcEvent(EventManager::IrcEventJoin, net, {}, ircUser->hostmask(), QStringList() << channel); + } + else { + newModes.removeAt(users.indexOf(user)); + } + } + ircChannel->joinIrcUsers(ircUsers, newModes); + for (NetworkEvent* event : events) { + event->setFlag(EventManager::Fake); // ignore this in here! + emit newEvent(event); + } } -void CoreSessionEventProcessor::destroyNetsplits(NetworkId netId) { - Network *net = coreSession()->network(netId); - if(!net) - return; +void CoreSessionEventProcessor::handleNetsplitFinished() +{ + auto* n = qobject_cast(sender()); + Q_ASSERT(n); + QHash splithash = _netsplits.take(n->network()); + splithash.remove(splithash.key(n)); + if (splithash.count()) + _netsplits[n->network()] = splithash; + n->deleteLater(); +} - QHash splits = _netsplits.take(net); - qDeleteAll(splits); +void CoreSessionEventProcessor::destroyNetsplits(NetworkId netId) +{ + Network* net = coreSession()->network(netId); + if (!net) + return; + + QHash splits = _netsplits.take(net); + qDeleteAll(splits); } /*******************************/ /******** CTCP HANDLING ********/ /*******************************/ -void CoreSessionEventProcessor::processCtcpEvent(CtcpEvent *e) { - if(e->testFlag(EventManager::Self)) - return; // ignore ctcp events generated by user input +void CoreSessionEventProcessor::processCtcpEvent(CtcpEvent* e) +{ + if (e->testFlag(EventManager::Self)) + return; // ignore ctcp events generated by user input + + if (e->type() != EventManager::CtcpEvent || e->ctcpType() != CtcpEvent::Query) + return; - if(e->type() != EventManager::CtcpEvent || e->ctcpType() != CtcpEvent::Query) - return; + handle(e->ctcpCmd(), Q_ARG(CtcpEvent*, e)); +} - handle(e->ctcpCmd(), Q_ARG(CtcpEvent *, e)); +void CoreSessionEventProcessor::defaultHandler(const QString& ctcpCmd, CtcpEvent* e) +{ + // This handler is only there to avoid warnings for unknown CTCPs + Q_UNUSED(e); + Q_UNUSED(ctcpCmd); } -void CoreSessionEventProcessor::defaultHandler(const QString &ctcpCmd, CtcpEvent *e) { - // This handler is only there to avoid warnings for unknown CTCPs - Q_UNUSED(e); - Q_UNUSED(ctcpCmd); +void CoreSessionEventProcessor::handleCtcpAction(CtcpEvent* e) +{ + // This handler is only there to feed CLIENTINFO + Q_UNUSED(e); } -void CoreSessionEventProcessor::handleCtcpAction(CtcpEvent *e) { - // This handler is only there to feed CLIENTINFO - Q_UNUSED(e); +void CoreSessionEventProcessor::handleCtcpClientinfo(CtcpEvent* e) +{ + QStringList supportedHandlers; + for (const QString& handler : providesHandlers()) + supportedHandlers << handler.toUpper(); + std::sort(supportedHandlers.begin(), supportedHandlers.end()); + e->setReply(supportedHandlers.join(" ")); } -void CoreSessionEventProcessor::handleCtcpClientinfo(CtcpEvent *e) { - QStringList supportedHandlers; - foreach(QString handler, providesHandlers()) - supportedHandlers << handler.toUpper(); - qSort(supportedHandlers); - e->setReply(supportedHandlers.join(" ")); +// http://www.irchelp.org/irchelp/rfc/ctcpspec.html +// http://en.wikipedia.org/wiki/Direct_Client-to-Client +void CoreSessionEventProcessor::handleCtcpDcc(CtcpEvent* e) +{ + // DCC support is unfinished, experimental and potentially dangerous, so make it opt-in + if (!Quassel::isOptionSet("enable-experimental-dcc")) { + qInfo() << "DCC disabled, start core with --enable-experimental-dcc if you really want to try it out"; + return; + } + + // normal: SEND [] + // reverse: SEND 0 + QStringList params = e->param().split(' '); + if (params.count()) { + QString cmd = params[0].toUpper(); + if (cmd == "SEND") { + if (params.count() < 4) { + qWarning() << "Invalid DCC SEND request:" << e; // TODO emit proper error to client + return; + } + QString filename = params[1]; + QHostAddress address; + quint16 port = params[3].toUShort(); + quint64 size = 0; + QString numIp = params[2]; // this is either IPv4 as a 32 bit value, or IPv6 (which always contains a colon) + if (numIp.contains(':')) { // IPv6 + if (!address.setAddress(numIp)) { + qWarning() << "Invalid IPv6:" << numIp; + return; + } + } + else { + address.setAddress(numIp.toUInt()); + } + + if (port == 0) { // Reverse DCC is indicated by a 0 port + emit newEvent(new MessageEvent(Message::Error, + e->network(), + tr("Reverse DCC SEND not supported"), + e->prefix(), + e->target(), + Message::None, + e->timestamp())); + return; + } + if (port < 1024) { + qWarning() << "Privileged port requested:" << port; // FIXME ask user if this is ok + } + + if (params.count() > 4) { // filesize is optional + size = params[4].toULong(); + } + + // TODO: check if target is the right thing to use for the partner + CoreTransfer* transfer = new CoreTransfer(Transfer::Direction::Receive, e->target(), filename, address, port, size, this); + coreSession()->signalProxy()->synchronize(transfer); + coreSession()->transferManager()->addTransfer(transfer); + } + else { + emit newEvent(new MessageEvent(Message::Error, + e->network(), + tr("DCC %1 not supported").arg(cmd), + e->prefix(), + e->target(), + Message::None, + e->timestamp())); + return; + } + } } -void CoreSessionEventProcessor::handleCtcpPing(CtcpEvent *e) { - e->setReply(e->param()); +void CoreSessionEventProcessor::handleCtcpPing(CtcpEvent* e) +{ + e->setReply(e->param().isNull() ? "" : e->param()); } -void CoreSessionEventProcessor::handleCtcpTime(CtcpEvent *e) { - e->setReply(QDateTime::currentDateTime().toString()); +void CoreSessionEventProcessor::handleCtcpTime(CtcpEvent* e) +{ + // Use the ISO standard to avoid locale-specific translated names + // Include timezone offset data to show which timezone a user's in, otherwise we're providing + // NTP-over-IRC with terrible accuracy. + e->setReply(formatDateTimeToOffsetISO(QDateTime::currentDateTime())); } -void CoreSessionEventProcessor::handleCtcpVersion(CtcpEvent *e) { - e->setReply(QString("Quassel IRC %1 (built on %2) -- http://www.quassel-irc.org") - .arg(Quassel::buildInfo().plainVersionString).arg(Quassel::buildInfo().buildDate)); +void CoreSessionEventProcessor::handleCtcpVersion(CtcpEvent* e) +{ + // Deliberately do not translate project name + // Use the ISO standard to avoid locale-specific translated names + // Use UTC time to provide a consistent string regardless of timezone + // (Statistics tracking tools usually only group client versions by exact string matching) + e->setReply(QString("Quassel IRC %1 (version date %2) -- https://www.quassel-irc.org") + .arg(Quassel::buildInfo().plainVersionString) + .arg(Quassel::buildInfo().commitDate.isEmpty() + ? "unknown" + : tryFormatUnixEpoch(Quassel::buildInfo().commitDate, Qt::DateFormat::ISODate, true))); }