X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcore%2Fircparser.cpp;h=dc9c227c6934993357ebc858985eb26467b2f71e;hp=10a5c8d369b366f3d43652bb8f8b06496f0a8479;hb=d42c74ba50a4f86b1da9a70e12a287ff16afcf71;hpb=6097f67231950c4c22845735db8b997a844fec48;ds=sidebyside diff --git a/src/core/ircparser.cpp b/src/core/ircparser.cpp index 10a5c8d3..dc9c227c 100644 --- a/src/core/ircparser.cpp +++ b/src/core/ircparser.cpp @@ -20,9 +20,16 @@ #include "ircparser.h" -#include "coresession.h" +#include "corenetwork.h" +#include "eventmanager.h" +#include "ircevent.h" +#include "messageevent.h" #include "networkevent.h" +#ifdef HAVE_QCA2 +# include "cipher.h" +#endif + IrcParser::IrcParser(CoreSession *session) : QObject(session), _coreSession(session) @@ -30,8 +37,262 @@ IrcParser::IrcParser(CoreSession *session) : } -void IrcParser::processNetworkIncoming(Event *event) { - NetworkDataEvent *e = static_cast(event); +bool IrcParser::checkParamCount(const QString &cmd, const QList ¶ms, int minParams) { + if(params.count() < minParams) { + qWarning() << "Expected" << minParams << "params for IRC command" << cmd << ", got:" << params; + return false; + } + return true; +} + +QByteArray IrcParser::decrypt(Network *network, const QString &bufferName, const QByteArray &message, bool isTopic) { +#ifdef HAVE_QCA2 + if(message.isEmpty()) + return message; + + Cipher *cipher = qobject_cast(network)->cipher(bufferName); + if(!cipher) + return message; + + return isTopic? cipher->decryptTopic(message) : cipher->decrypt(message); +#else + return message; +#endif +} + +/* parse the raw server string and generate an appropriate event */ +/* used to be handleServerMsg() */ +void IrcParser::processNetworkIncoming(NetworkDataEvent *e) { + CoreNetwork *net = qobject_cast(e->network()); + if(!net) { + qWarning() << "Received network event without valid network pointer!"; + return; + } + + // note that the IRC server is still alive + net->resetPingTimeout(); + + QByteArray msg = e->data(); + if(msg.isEmpty()) { + qWarning() << "Received empty string from server!"; + return; + } + + // Now we split the raw message into its various parts... + QString prefix; + QByteArray trailing; + QString cmd, target; + + // First, check for a trailing parameter introduced by " :", since this might screw up splitting the msg + // NOTE: This assumes that this is true in raw encoding, but well, hopefully there are no servers running in japanese on protocol level... + int idx = msg.indexOf(" :"); + if(idx >= 0) { + if(msg.length() > idx + 2) + trailing = msg.mid(idx + 2); + msg = msg.left(idx); + } + // OK, now it is safe to split... + QList params = msg.split(' '); + + // This could still contain empty elements due to (faulty?) ircds sending multiple spaces in a row + // Also, QByteArray is not nearly as convenient to work with as QString for such things :) + QList::iterator iter = params.begin(); + while(iter != params.end()) { + if(iter->isEmpty()) + iter = params.erase(iter); + else + ++iter; + } + + if(!trailing.isEmpty()) + params << trailing; + if(params.count() < 1) { + qWarning() << "Received invalid string from server!"; + return; + } + + QString foo = net->serverDecode(params.takeFirst()); + + // a colon as the first chars indicates the existence of a prefix + if(foo[0] == ':') { + foo.remove(0, 1); + prefix = foo; + if(params.count() < 1) { + qWarning() << "Received invalid string from server!"; + return; + } + foo = net->serverDecode(params.takeFirst()); + } + + // next string without a whitespace is the command + cmd = foo.trimmed(); + + QList events; + EventManager::EventType type = EventManager::Invalid; + + // numeric replies have the target as first param (RFC 2812 - 2.4). this is usually our own nick. Remove this! + uint num = cmd.toUInt(); + if(num > 0) { + if(params.count() == 0) { + qWarning() << "Message received from server violates RFC and is ignored!" << msg; + return; + } + target = net->serverDecode(params.takeFirst()); + type = EventManager::IrcEventNumeric; + } else { + QString typeName = QLatin1String("IrcEvent") + cmd.at(0).toUpper() + cmd.mid(1).toLower(); + type = eventManager()->eventTypeByName(typeName); + if(type == EventManager::Invalid) { + type = eventManager()->eventTypeByName("IrcEventUnknown"); + Q_ASSERT(type != EventManager::Invalid); + } + target = QString(); + } + + // Almost always, all params are server-encoded. There's a few exceptions, let's catch them here! + // Possibly not the best option, we might want something more generic? Maybe yet another layer of + // unencoded events with event handlers for the exceptions... + // Also, PRIVMSG and NOTICE need some special handling, we put this in here as well, so we get out + // 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 + + switch(type) { + + case EventManager::IrcEventPrivmsg: + defaultHandling = false; // this might create a list of events + + if(checkParamCount(cmd, params, 1)) { + QString senderNick = nickFromMask(prefix); + 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; + + msg = decrypt(net, target, msg); + + events << new IrcEventRawMessage(EventManager::IrcEventRawPrivmsg, net, prefix, target, msg); + } + } + break; + + case EventManager::IrcEventNotice: + defaultHandling = false; + + if(checkParamCount(cmd, params, 2)) { + 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 + if(!net->isChannelName(target)) { + QString decMsg = net->serverDecode(params.at(1)); + QRegExp welcomeRegExp("^\\[([^\\]]+)\\] "); + if(welcomeRegExp.indexIn(decMsg) != -1) { + QString channelname = welcomeRegExp.cap(1); + decMsg = decMsg.mid(welcomeRegExp.matchedLength()); + CoreIrcChannel *chan = static_cast(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, channelname, prefix); + continue; + } + } + } + + if(prefix.isEmpty() || target == "AUTH") { + target = QString(); + } else { + if(!target.isEmpty() && net->prefixes().contains(target.at(0))) + target = target.mid(1); + if(!net->isChannelName(target)) + target = nickFromMask(prefix); + } + events << new IrcEventRawMessage(EventManager::IrcEventRawNotice, net, prefix, target, msg); + } + } + break; + + // the following events need only special casing for param decoding + case EventManager::IrcEventKick: + 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 + } + break; + + case EventManager::IrcEventPart: + if(params.count() >= 2) { + QString channel = net->serverDecode(params.at(0)); + decParams << channel; + decParams << net->userDecode(nickFromMask(prefix), params.at(1)); + } + break; + + case EventManager::IrcEventQuit: + if(params.count() >= 1) { + decParams << net->userDecode(nickFromMask(prefix), params.at(0)); + } + break; + + case EventManager::IrcEventTopic: + if(params.count() >= 2) { + QString channel = net->serverDecode(params.at(0)); + decParams << channel; + decParams << net->channelDecode(channel, decrypt(net, channel, params.at(1), true)); + } + break; + + case EventManager::IrcEventNumeric: + switch(num) { + case 301: /* RPL_AWAY */ + if(params.count() >= 2) { + QString nick = net->serverDecode(params.at(0)); + decParams << nick; + decParams << net->userDecode(nick, params.at(1)); + } + break; + + case 332: /* RPL_TOPIC */ + if(params.count() >= 2) { + QString channel = net->serverDecode(params.at(0)); + decParams << channel; + decParams << net->channelDecode(channel, decrypt(net, channel, params.at(1), true)); + } + break; + + case 333: /* Topic set by... */ + if(params.count() >= 2) { + QString channel = net->serverDecode(params.at(0)); + decParams << channel << net->serverDecode(params.at(1)); + decParams << net->channelDecode(channel, params.at(2)); + } + break; + } + + default: + break; + } + + if(defaultHandling && type != EventManager::Invalid) { + for(int i = decParams.count(); i < params.count(); i++) + decParams << net->serverDecode(params.at(i)); + + IrcEvent *event; + if(type == EventManager::IrcEventNumeric) + event = new IrcEventNumeric(num, net, prefix, target); + else + event = new IrcEvent(type, net, prefix); + event->setParams(decParams); + events << event; + } - qDebug() << "received" << e->data(); + foreach(Event *event, events) { + coreSession()->eventManager()->sendEvent(event); + } }