src: Yearly copyright bump
[quassel.git] / src / core / ircparser.cpp
index 69603c1..bfbc391 100644 (file)
@@ -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  *
@@ -20,6 +20,8 @@
 
 #include "ircparser.h"
 
+#include <QDebug>
+
 #include "corenetwork.h"
 #include "eventmanager.h"
 #include "ircevent.h"
 #include "networkevent.h"
 
 #ifdef HAVE_QCA2
-#  include "cipher.h"
+#    include "cipher.h"
+#    include "keyevent.h"
 #endif
 
-IrcParser::IrcParser(CoreSession *session) :
-    QObject(session),
-    _coreSession(session)
+IrcParser::IrcParser(CoreSession* session)
+    : QObject(session)
+    _coreSession(session)
 {
-    connect(this, SIGNAL(newEvent(Event *)), coreSession()->eventManager(), SLOT(postEvent(Event *)));
-}
+    // Check if raw IRC logging is enabled
+    _debugLogRawIrc = (Quassel::isOptionSet("debug-irc") || Quassel::isOptionSet("debug-irc-id"));
+    _debugLogRawNetId = Quassel::optionValue("debug-irc-id").toInt();
 
+    connect(this, &IrcParser::newEvent, coreSession()->eventManager(), &EventManager::postEvent);
+}
 
-bool IrcParser::checkParamCount(const QString &cmd, const QList<QByteArray> &params, int minParams)
+bool IrcParser::checkParamCount(const QString& cmd, const QList<QByteArray>& params, int minParams)
 {
     if (params.count() < minParams) {
         qWarning() << "Expected" << minParams << "params for IRC command" << cmd << ", got:" << params;
@@ -47,8 +53,7 @@ bool IrcParser::checkParamCount(const QString &cmd, const QList<QByteArray> &par
     return true;
 }
 
-
-QByteArray IrcParser::decrypt(Network *network, const QString &bufferName, const QByteArray &message, bool isTopic)
+QByteArray IrcParser::decrypt(Network* network, const QString& bufferName, const QByteArray& message, bool isTopic)
 {
 #ifdef HAVE_QCA2
     if (message.isEmpty())
@@ -57,8 +62,8 @@ QByteArray IrcParser::decrypt(Network *network, const QString &bufferName, const
     if (!Cipher::neededFeaturesAvailable())
         return message;
 
-    Cipher *cipher = qobject_cast<CoreNetwork *>(network)->cipher(bufferName);
-    if (!cipher)
+    Cipher* cipher = qobject_cast<CoreNetwork*>(network)->cipher(bufferName);
+    if (!cipher || cipher->key().isEmpty())
         return message;
 
     return isTopic ? cipher->decryptTopic(message) : cipher->decrypt(message);
@@ -70,12 +75,11 @@ QByteArray IrcParser::decrypt(Network *network, const QString &bufferName, const
 #endif
 }
 
-
 /* parse the raw server string and generate an appropriate event */
 /* used to be handleServerMsg()                                  */
-void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
+void IrcParser::processNetworkIncoming(NetworkDataEvente)
 {
-    CoreNetwork *net = qobject_cast<CoreNetwork *>(e->network());
+    auto* net = qobject_cast<CoreNetwork*>(e->network());
     if (!net) {
         qWarning() << "Received network event without valid network pointer!";
         return;
@@ -90,6 +94,12 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
         return;
     }
 
+    // Log the message if enabled and network ID matches or allows all
+    if (_debugLogRawIrc && (_debugLogRawNetId == -1 || net->networkId().toInt() == _debugLogRawNetId)) {
+        // Include network ID
+        qDebug() << "IRC net" << net->networkId() << "<<" << msg;
+    }
+
     // Now we split the raw message into its various parts...
     QString prefix;
     QByteArray trailing;
@@ -139,7 +149,7 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
     // next string without a whitespace is the command
     cmd = foo.trimmed();
 
-    QList<Event *> events;
+    QList<Event*> events;
     EventManager::EventType type = EventManager::Invalid;
 
     uint num = cmd.toUInt();
@@ -171,24 +181,43 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
     // nice pre-parsed events that the CTCP handler can consume.
 
     QStringList decParams;
-    bool defaultHandling = true; // whether to automatically copy the remaining params and send the event
+    bool defaultHandling = true;  // whether to automatically copy the remaining params and send the event
 
     switch (type) {
     case EventManager::IrcEventPrivmsg:
-        defaultHandling = false; // this might create a list of events
+        defaultHandling = false;  // this might create a list of events
 
         if (checkParamCount(cmd, params, 1)) {
             QString senderNick = nickFromMask(prefix);
+            net->updateNickFromMask(prefix);
+            // Check if the sender is our own nick.  If so, treat message as if sent by ourself.
+            // See http://ircv3.net/specs/extensions/echo-message-3.2.html
+            // Cache the result to avoid multiple redundant comparisons
+            bool isSelfMessage = net->isMyNick(senderNick);
+
             QByteArray msg = params.count() < 2 ? QByteArray() : params.at(1);
 
             QStringList targets = net->serverDecode(params.at(0)).split(',', QString::SkipEmptyParts);
             QStringList::const_iterator targetIter;
             for (targetIter = targets.constBegin(); targetIter != targets.constEnd(); ++targetIter) {
-                QString target = net->isChannelName(*targetIter) ? *targetIter : senderNick;
+                // For self-messages, keep the target, don't set it to the senderNick
+                QString target = net->isChannelName(*targetIter) || net->isStatusMsg(*targetIter) || isSelfMessage ? *targetIter : senderNick;
 
+                // Note: self-messages could be encrypted with a different key.  If issues arise,
+                // consider including this within an if (!isSelfMessage) block
                 msg = decrypt(net, target, msg);
 
-                events << new IrcEventRawMessage(EventManager::IrcEventRawPrivmsg, net, msg, prefix, target, e->timestamp());
+                IrcEventRawMessage* rawMessage = new IrcEventRawMessage(EventManager::IrcEventRawPrivmsg,
+                                                                        net,
+                                                                        msg,
+                                                                        prefix,
+                                                                        target,
+                                                                        e->timestamp());
+                if (isSelfMessage) {
+                    // Self-messages need processed differently, tag as such via flag.
+                    rawMessage->setFlag(EventManager::Self);
+                }
+                events << rawMessage;
             }
         }
         break;
@@ -197,20 +226,27 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
         defaultHandling = false;
 
         if (checkParamCount(cmd, params, 2)) {
+            // Check if the sender is our own nick.  If so, treat message as if sent by ourself.
+            // See http://ircv3.net/specs/extensions/echo-message-3.2.html
+            // Cache the result to avoid multiple redundant comparisons
+            bool isSelfMessage = net->isMyNick(nickFromMask(prefix));
+
             QStringList targets = net->serverDecode(params.at(0)).split(',', QString::SkipEmptyParts);
             QStringList::const_iterator targetIter;
             for (targetIter = targets.constBegin(); targetIter != targets.constEnd(); ++targetIter) {
                 QString target = *targetIter;
 
                 // special treatment for welcome messages like:
-                // :ChanServ!ChanServ@services. NOTICE egst :[#apache] Welcome, this is #apache. Please read the in-channel topic message. This channel is being logged by IRSeekBot. If you have any question please see http://blog.freenode.net/?p=68
+                // :ChanServ!ChanServ@services. NOTICE egst :[#apache] Welcome, this is #apache. Please read the in-channel topic message.
+                // This channel is being logged by IRSeekBot. If you have any question please see http://blog.freenode.net/?p=68
                 if (!net->isChannelName(target)) {
                     QString decMsg = net->serverDecode(params.at(1));
-                    QRegExp welcomeRegExp("^\\[([^\\]]+)\\] ");
+                    QRegExp welcomeRegExp(R"(^\[([^\]]+)\] )");
                     if (welcomeRegExp.indexIn(decMsg) != -1) {
                         QString channelname = welcomeRegExp.cap(1);
                         decMsg = decMsg.mid(welcomeRegExp.matchedLength());
-                        CoreIrcChannel *chan = static_cast<CoreIrcChannel *>(net->ircChannel(channelname)); // we only have CoreIrcChannels in the core, so this cast is safe
+                        CoreIrcChannel* chan = static_cast<CoreIrcChannel*>(
+                            net->ircChannel(channelname));  // we only have CoreIrcChannels in the core, so this cast is safe
                         if (chan && !chan->receivedWelcomeMsg()) {
                             chan->setReceivedWelcomeMsg();
                             events << new MessageEvent(Message::Notice, net, decMsg, prefix, channelname, Message::None, e->timestamp());
@@ -225,19 +261,50 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
                 else {
                     if (!target.isEmpty() && net->prefixes().contains(target.at(0)))
                         target = target.mid(1);
-                    if (!net->isChannelName(target))
-                        target = nickFromMask(prefix);
+
+                    if (!net->isChannelName(target)) {
+                        // For self-messages, keep the target, don't set it to the sender prefix
+                        if (!isSelfMessage) {
+                            target = nickFromMask(prefix);
+                        }
+                        net->updateNickFromMask(prefix);
+                    }
+                }
+
+#ifdef HAVE_QCA2
+                // Handle DH1080 key exchange
+                // Don't allow key exchange in channels, and don't allow it for self-messages.
+                bool keyExchangeAllowed = (!net->isChannelName(target) && !isSelfMessage);
+                if (params[1].startsWith("DH1080_INIT") && keyExchangeAllowed) {
+                    events << new KeyEvent(EventManager::KeyEvent, net, prefix, target, KeyEvent::Init, params[1].mid(12));
+                }
+                else if (params[1].startsWith("DH1080_FINISH") && keyExchangeAllowed) {
+                    events << new KeyEvent(EventManager::KeyEvent, net, prefix, target, KeyEvent::Finish, params[1].mid(14));
+                }
+                else
+#endif
+                {
+                    IrcEventRawMessage* rawMessage = new IrcEventRawMessage(EventManager::IrcEventRawNotice,
+                                                                            net,
+                                                                            params[1],
+                                                                            prefix,
+                                                                            target,
+                                                                            e->timestamp());
+                    if (isSelfMessage) {
+                        // Self-messages need processed differently, tag as such via flag.
+                        rawMessage->setFlag(EventManager::Self);
+                    }
+                    events << rawMessage;
                 }
-                events << new IrcEventRawMessage(EventManager::IrcEventRawNotice, net, params[1], prefix, target, e->timestamp());
             }
         }
         break;
 
     // the following events need only special casing for param decoding
     case EventManager::IrcEventKick:
-        if (params.count() >= 3) { // we have a reason
+        if (params.count() >= 3) {  // we have a reason
             decParams << net->serverDecode(params.at(0)) << net->serverDecode(params.at(1));
-            decParams << net->channelDecode(decParams.first(), params.at(2)); // kick reason
+            decParams << net->channelDecode(decParams.first(), params.at(2));  // kick reason
         }
         break;
 
@@ -246,12 +313,14 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
             QString channel = net->serverDecode(params.at(0));
             decParams << channel;
             decParams << net->userDecode(nickFromMask(prefix), params.at(1));
+            net->updateNickFromMask(prefix);
         }
         break;
 
     case EventManager::IrcEventQuit:
         if (params.count() >= 1) {
             decParams << net->userDecode(nickFromMask(prefix), params.at(0));
+            net->updateNickFromMask(prefix);
         }
         break;
 
@@ -263,6 +332,16 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
         }
         break;
 
+    case EventManager::IrcEventAway: {
+        // Update hostmask info first.  This will create the nick if it doesn't exist, e.g.
+        // away-notify data being sent before JOIN messages.
+        net->updateNickFromMask(prefix);
+        // Separate nick in order to separate server and user decoding
+        QString nick = nickFromMask(prefix);
+        decParams << nick;
+        decParams << (params.count() >= 1 ? net->userDecode(nick, params.at(0)) : QString());
+    } break;
+
     case EventManager::IrcEventNumeric:
         switch (num) {
         case 301: /* RPL_AWAY */
@@ -288,6 +367,21 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
                 decParams << net->channelDecode(channel, params.at(2));
             }
             break;
+        case 451: /* You have not registered... */
+            if (target.compare("CAP", Qt::CaseInsensitive) == 0) {
+                // :irc.server.com 451 CAP :You have not registered
+                // If server doesn't support capabilities, it will report this message.  Turn it
+                // into a nicer message since it's not a real error.
+                defaultHandling = false;
+                events << new MessageEvent(Message::Server,
+                                           e->network(),
+                                           tr("Capability negotiation not supported"),
+                                           QString(),
+                                           QString(),
+                                           Message::None,
+                                           e->timestamp());
+            }
+            break;
         }
 
     default:
@@ -298,7 +392,12 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
         for (int i = decParams.count(); i < params.count(); i++)
             decParams << net->serverDecode(params.at(i));
 
-        IrcEvent *event;
+        // We want to trim the last param just in case, except for PRIVMSG and NOTICE
+        // ... but those happen to be the only ones not using defaultHandling anyway
+        if (!decParams.isEmpty() && decParams.last().endsWith(' '))
+            decParams.append(decParams.takeLast().trimmed());
+
+        IrcEvent* event;
         if (type == EventManager::IrcEventNumeric)
             event = new IrcEventNumeric(num, net, prefix, target);
         else
@@ -308,7 +407,7 @@ void IrcParser::processNetworkIncoming(NetworkDataEvent *e)
         events << event;
     }
 
-    foreach(Event *event, events) {
+    foreach (Event* event, events) {
         emit newEvent(event);
     }
 }