X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcore%2Fuserinputhandler.cpp;h=26dd3d454774461f78cc34a1201bfcff9dd56100;hp=e41234fe2b05bba07f0ca2cb6121fa579c8c3e6c;hb=bf51277149f96cf6b8d8df742f7e3bf812f741f7;hpb=8699dd758516d0ded076811e8ea656adc95e69d0

diff --git a/src/core/userinputhandler.cpp b/src/core/userinputhandler.cpp
index e41234fe..26dd3d45 100644
--- a/src/core/userinputhandler.cpp
+++ b/src/core/userinputhandler.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-08 by the Quassel Project                          *
+ *   Copyright (C) 2005-09 by the Quassel Project                          *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -21,163 +21,499 @@
 
 #include "util.h"
 
-#include "server.h"
-#include "networkinfo.h"
 #include "ctcphandler.h"
+#include "coreidentity.h"
+#include "ircuser.h"
 
 #include <QDebug>
+#include <QRegExp>
 
-UserInputHandler::UserInputHandler(Server *parent)
-  : BasicHandler(parent) {
+UserInputHandler::UserInputHandler(CoreNetwork *parent)
+  : BasicHandler(parent)
+{
 }
 
-void UserInputHandler::handleUserInput(QString bufname, QString msg) {
-  try {
-    if(msg.isEmpty())
-      return;
-    QString cmd;
-    if(!msg.startsWith('/')) {
-      cmd = QString("SAY");
-    } else {
-      cmd = msg.section(' ', 0, 0).remove(0, 1).toUpper();
-      msg = msg.section(' ', 1);
-    }
-    handle(cmd, Q_ARG(QString, bufname), Q_ARG(QString, msg));
-  } catch(Exception e) {
-    emit displayMsg(Message::Error, "", e.msg());
+void UserInputHandler::handleUserInput(const BufferInfo &bufferInfo, const QString &msg_) {
+  if(msg_.isEmpty())
+    return;
+  QString cmd;
+  QString msg = msg_;
+  // leading slashes indicate there's a command to call unless there is another one in the first section (like a path /proc/cpuinfo)
+  int secondSlashPos = msg.indexOf('/', 1);
+  int firstSpacePos = msg.indexOf(' ');
+  if(!msg.startsWith('/') || (secondSlashPos != -1 && (secondSlashPos < firstSpacePos || firstSpacePos == -1))) {
+    if(msg.startsWith("//"))
+      msg.remove(0, 1); // //asdf is transformed to /asdf
+    cmd = QString("SAY");
+  } else {
+    cmd = msg.section(' ', 0, 0).remove(0, 1).toUpper();
+    msg = msg.section(' ', 1);
   }
+  handle(cmd, Q_ARG(BufferInfo, bufferInfo), Q_ARG(QString, msg));
 }
 
 // ====================
 //  Public Slots
 // ====================
+void UserInputHandler::handleAway(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+
+  QString awayMsg = msg;
+  IrcUser *me = network()->me();
+
+  // if there is no message supplied we have to check if we are already away or not
+  if(msg.isEmpty()) {
+    if(me && !me->isAway()) {
+      awayMsg = network()->identityPtr()->awayReason();
+      if(awayMsg.isEmpty()) {
+	awayMsg = tr("away");
+      }
+    }
+  }
+  if(me)
+    me->setAwayMessage(awayMsg);
+
+  putCmd("AWAY", serverEncode(awayMsg));
+}
+
+void UserInputHandler::handleBan(const BufferInfo &bufferInfo, const QString &msg) {
+  banOrUnban(bufferInfo, msg, true);
+}
+
+void UserInputHandler::handleUnban(const BufferInfo &bufferInfo, const QString &msg) {
+  banOrUnban(bufferInfo, msg, false);
+}
+
+void UserInputHandler::banOrUnban(const BufferInfo &bufferInfo, const QString &msg, bool ban) {
+  QString banChannel;
+  QString banUser;
+
+  QStringList params = msg.split(" ");
+
+  if(!params.isEmpty() && isChannelName(params[0])) {
+    banChannel = params.takeFirst();
+  } else if(bufferInfo.type() == BufferInfo::ChannelBuffer) {
+    banChannel = bufferInfo.bufferName();
+  } else {
+    emit displayMsg(Message::Error, BufferInfo::StatusBuffer, "", QString("Error: channel unknown in command: /BAN %1").arg(msg));
+    return;
+  }
+
+  if(!params.isEmpty() && !params.contains("!") && network()->ircUser(params[0])) {
+    IrcUser *ircuser = network()->ircUser(params[0]);
+    // generalizedHost changes <nick> to  *!ident@*.sld.tld.
+    QString generalizedHost = ircuser->host();
+    if(generalizedHost.isEmpty()) {
+      emit displayMsg(Message::Error, BufferInfo::StatusBuffer, "", QString("Error: host unknown in command: /BAN %1").arg(msg));
+      return;
+    }
+
+    static QRegExp ipAddress("\\d+\\.\\d+\\.\\d+\\.\\d+");
+    if(ipAddress.exactMatch(generalizedHost))    {
+        int lastDotPos = generalizedHost.lastIndexOf('.') + 1;
+        generalizedHost.replace(lastDotPos, generalizedHost.length() - lastDotPos, '*');
+    } else if(generalizedHost.lastIndexOf(".") != -1 && generalizedHost.lastIndexOf(".", generalizedHost.lastIndexOf(".")-1) != -1) {
+      int secondLastPeriodPosition = generalizedHost.lastIndexOf(".", generalizedHost.lastIndexOf(".")-1);
+      generalizedHost.replace(0, secondLastPeriodPosition, "*");
+    }
+    banUser = QString("*!%1@%2").arg(ircuser->user(), generalizedHost);
+  } else {
+    banUser = params.join(" ");
+  }
+
+  QString banMode = ban ? "+b" : "-b";
+  QString banMsg = QString("MODE %1 %2 %3").arg(banChannel, banMode, banUser);
+  emit putRawLine(serverEncode(banMsg));
+}
 
-void UserInputHandler::handleAway(QString bufname, QString msg) {
-  emit putCmd("AWAY", QStringList(msg));
+void UserInputHandler::handleCtcp(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+
+  QString nick = msg.section(' ', 0, 0);
+  QString ctcpTag = msg.section(' ', 1, 1).toUpper();
+  if(ctcpTag.isEmpty())
+    return;
+
+  QString message = "";
+  QString verboseMessage = tr("sending CTCP-%1 request").arg(ctcpTag);
+
+  if(ctcpTag == "PING") {
+    uint now = QDateTime::currentDateTime().toTime_t();
+    message = QString::number(now);
+  }
+
+  network()->ctcpHandler()->query(nick, ctcpTag, message);
+  emit displayMsg(Message::Action, BufferInfo::StatusBuffer, "", verboseMessage, network()->myNick());
 }
 
-void UserInputHandler::handleDeop(QString bufname, QString msg) {
+void UserInputHandler::handleDeop(const BufferInfo &bufferInfo, const QString &msg) {
   QStringList nicks = msg.split(' ', QString::SkipEmptyParts);
   QString m = "-"; for(int i = 0; i < nicks.count(); i++) m += 'o';
   QStringList params;
-  params << bufname << m << nicks;
-  emit putCmd("MODE", params);
+  params << bufferInfo.bufferName() << m << nicks;
+  emit putCmd("MODE", serverEncode(params));
 }
 
-void UserInputHandler::handleDevoice(QString bufname, QString msg) {
+void UserInputHandler::handleDevoice(const BufferInfo &bufferInfo, const QString &msg) {
   QStringList nicks = msg.split(' ', QString::SkipEmptyParts);
   QString m = "-"; for(int i = 0; i < nicks.count(); i++) m += 'v';
   QStringList params;
-  params << bufname << m << nicks;
-  emit putCmd("MODE", params);
+  params << bufferInfo.bufferName() << m << nicks;
+  emit putCmd("MODE", serverEncode(params));
 }
 
-void UserInputHandler::handleInvite(QString bufname, QString msg) {
+void UserInputHandler::handleInvite(const BufferInfo &bufferInfo, const QString &msg) {
   QStringList params;
-  params << msg << bufname;
-  emit putCmd("INVITE", params);
+  params << msg << bufferInfo.bufferName();
+  emit putCmd("INVITE", serverEncode(params));
 }
 
-void UserInputHandler::handleJoin(QString bufname, QString msg) {
-  emit putCmd("JOIN", QStringList(msg));
+void UserInputHandler::handleJoin(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo);
+
+  // trim spaces before chans or keys
+  QString sane_msg = msg;
+  sane_msg.replace(QRegExp(", +"), ",");
+  QStringList params = sane_msg.trimmed().split(" ");
+  QStringList chans = params[0].split(",");
+  QStringList keys;
+  int i;
+  for(i = 0; i < chans.count(); i++) {
+    if(!network()->isChannelName(chans[i]))
+      chans[i].prepend('#');
+  }
+  params[0] = chans.join(",");
+  if(params.count() > 1) keys = params[1].split(",");
+  emit putCmd("JOIN", serverEncode(params)); // FIXME handle messages longer than 512 bytes!
+  i = 0;
+  for(; i < keys.count(); i++) {
+    if(i >= chans.count()) break;
+    network()->addChannelKey(chans[i], keys[i]);
+  }
+  for(; i < chans.count(); i++) {
+    network()->removeChannelKey(chans[i]);
+  }
 }
 
-void UserInputHandler::handleKick(QString bufname, QString msg) {
-  QStringList params;
-  params << bufname << msg.split(' ', QString::SkipEmptyParts);
+void UserInputHandler::handleKick(const BufferInfo &bufferInfo, const QString &msg) {
+  QString nick = msg.section(' ', 0, 0, QString::SectionSkipEmpty);
+  QString reason = msg.section(' ', 1, -1, QString::SectionSkipEmpty).trimmed();
+  if(reason.isEmpty())
+    reason = network()->identityPtr()->kickReason();
+
+  QList<QByteArray> params;
+  params << serverEncode(bufferInfo.bufferName()) << serverEncode(nick) << channelEncode(bufferInfo.bufferName(), reason);
   emit putCmd("KICK", params);
 }
 
-void UserInputHandler::handleList(QString bufname, QString msg) {
-  emit putCmd("LIST", msg.split(' ', QString::SkipEmptyParts));
+void UserInputHandler::handleKill(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  QString nick = msg.section(' ', 0, 0, QString::SectionSkipEmpty);
+  QString pass = msg.section(' ', 1, -1, QString::SectionSkipEmpty);
+  QList<QByteArray> params;
+  params << serverEncode(nick) << serverEncode(pass);
+  emit putCmd("KILL", params);
+}
+
+
+void UserInputHandler::handleList(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  emit putCmd("LIST", serverEncode(msg.split(' ', QString::SkipEmptyParts)));
 }
 
-void UserInputHandler::handleMode(QString bufname, QString msg) {
-  emit putCmd("MODE", msg.split(' ', QString::SkipEmptyParts));
+void UserInputHandler::handleMe(const BufferInfo &bufferInfo, const QString &msg) {
+  if(bufferInfo.bufferName().isEmpty()) return; // server buffer
+  network()->ctcpHandler()->query(bufferInfo.bufferName(), "ACTION", msg);
+  emit displayMsg(Message::Action, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
+}
+
+void UserInputHandler::handleMode(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+
+  QStringList params = msg.split(' ', QString::SkipEmptyParts);
+  // if the first argument is neither a channel nor us (user modes are only to oneself) the current buffer is assumed to be the target
+  if(!params.isEmpty() && !network()->isChannelName(params[0]) && !network()->isMyNick(params[0]))
+    params.prepend(bufferInfo.bufferName());
+
+  // TODO handle correct encoding for buffer modes (channelEncode())
+  emit putCmd("MODE", serverEncode(params));
 }
 
 // TODO: show privmsgs
-void UserInputHandler::handleMsg(QString bufname, QString msg) {
-  QString nick = msg.section(" ", 0, 0);
-  msg = msg.section(" ", 1);
-  if(nick.isEmpty() || msg.isEmpty()) return;
-  QStringList params;
-  params << nick << msg;
-  emit putCmd("PRIVMSG", params);
+void UserInputHandler::handleMsg(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo);
+  if(!msg.contains(' '))
+    return;
+
+  QByteArray target = serverEncode(msg.section(' ', 0, 0));
+  putPrivmsg(target, userEncode(target, msg.section(' ', 1)));
 }
 
-void UserInputHandler::handleNick(QString bufname, QString msg) {
+void UserInputHandler::handleNick(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
   QString nick = msg.section(' ', 0, 0);
-  emit putCmd("NICK", QStringList(nick));
+  emit putCmd("NICK", serverEncode(nick));
 }
 
-void UserInputHandler::handleOp(QString bufname, QString msg) {
+void UserInputHandler::handleNotice(const BufferInfo &bufferInfo, const QString &msg) {
+  QString bufferName = msg.section(' ', 0, 0);
+  QString payload = msg.section(' ', 1);
+  QList<QByteArray> params;
+  params << serverEncode(bufferName) << channelEncode(bufferInfo.bufferName(), payload);
+  emit putCmd("NOTICE", params);
+  emit displayMsg(Message::Notice, bufferName, payload, network()->myNick(), Message::Self);
+}
+
+void UserInputHandler::handleOp(const BufferInfo &bufferInfo, const QString &msg) {
   QStringList nicks = msg.split(' ', QString::SkipEmptyParts);
   QString m = "+"; for(int i = 0; i < nicks.count(); i++) m += 'o';
   QStringList params;
-  params << bufname << m << nicks;
-  emit putCmd("MODE", params);
+  params << bufferInfo.bufferName() << m << nicks;
+  emit putCmd("MODE", serverEncode(params));
 }
 
-void UserInputHandler::handlePart(QString bufname, QString msg) {
-  QStringList params;
-  params << bufname << msg;
+void UserInputHandler::handleOper(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  emit putRawLine(serverEncode(QString("OPER %1").arg(msg)));
+}
+
+void UserInputHandler::handlePart(const BufferInfo &bufferInfo, const QString &msg) {
+  QList<QByteArray> params;
+  QString partReason;
+
+  // msg might contain either a channel name and/or a reaon, so we have to check if the first word is a known channel
+  QString channelName = msg.section(' ', 0, 0);
+  if(channelName.isEmpty() || !network()->ircChannel(channelName)) {
+    channelName = bufferInfo.bufferName();
+    partReason = msg;
+  } else {
+    partReason = msg.mid(channelName.length() + 1);
+  }
+
+  if(partReason.isEmpty())
+    partReason = network()->identityPtr()->partReason();
+
+  params << serverEncode(channelName) << channelEncode(bufferInfo.bufferName(), partReason);
   emit putCmd("PART", params);
 }
 
+void UserInputHandler::handlePing(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+
+  QString param = msg;
+  if(param.isEmpty())
+    param = QTime::currentTime().toString("hh:mm:ss.zzz");
+
+  putCmd("PING", serverEncode(param));
+}
+
 // TODO: implement queries
-void UserInputHandler::handleQuery(QString bufname, QString msg) {
-  QString nick = msg.section(' ', 0, 0);
-  // TODO: usenetworkids
-//   if(!nick.isEmpty())
-//     emit queryRequested(network, nick);
+void UserInputHandler::handleQuery(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  QString target = msg.section(' ', 0, 0);
+  QString message = msg.section(' ', 1);
+  if(message.isEmpty())
+    emit displayMsg(Message::Server, BufferInfo::QueryBuffer, target, "Starting query with " + target, network()->myNick(), Message::Self);
+  else
+    emit displayMsg(Message::Plain, BufferInfo::QueryBuffer, target, message, network()->myNick(), Message::Self);
+  handleMsg(bufferInfo, msg);
 }
 
-void UserInputHandler::handleQuit(QString bufname, QString msg) {
-  emit putCmd("QUIT", QStringList(msg));
+void UserInputHandler::handleQuit(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  network()->disconnectFromIrc(true, msg);
 }
 
-void UserInputHandler::handleQuote(QString bufname, QString msg) {
-  emit putRawLine(msg);
+void UserInputHandler::issueQuit(const QString &reason) {
+  emit putCmd("QUIT", serverEncode(reason));
 }
 
-void UserInputHandler::handleSay(QString bufname, QString msg) {
-  if(bufname.isEmpty()) return;  // server buffer
-  QStringList params;
-  params << bufname << msg;
-  emit putCmd("PRIVMSG", params);
-  if(isChannelName(bufname)) {
-    emit displayMsg(Message::Plain, params[0], msg, networkInfo()->myNick(), Message::Self);
-  } else {
-    emit displayMsg(Message::Plain, params[0], msg, networkInfo()->myNick(), Message::Self|Message::PrivMsg);
-  }
+void UserInputHandler::handleQuote(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  emit putRawLine(serverEncode(msg));
 }
 
-void UserInputHandler::handleMe(QString bufname, QString msg) {
-  if(bufname.isEmpty()) return; // server buffer
-  server->ctcpHandler()->query(bufname, "ACTION", msg);
-  emit displayMsg(Message::Action, bufname, msg, networkInfo()->myNick());
+void UserInputHandler::handleSay(const BufferInfo &bufferInfo, const QString &msg) {
+  if(bufferInfo.bufferName().isEmpty())
+    return;  // server buffer
+  putPrivmsg(serverEncode(bufferInfo.bufferName()), channelEncode(bufferInfo.bufferName(), msg));
+  emit displayMsg(Message::Plain, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
 }
 
-void UserInputHandler::handleTopic(QString bufname, QString msg) {
-  if(bufname.isEmpty()) return;
-  QStringList params;
-  params << bufname << msg;
+void UserInputHandler::handleTopic(const BufferInfo &bufferInfo, const QString &msg) {
+  if(bufferInfo.bufferName().isEmpty()) return;
+  QList<QByteArray> params;
+  params << serverEncode(bufferInfo.bufferName());
+  if(!msg.isEmpty())
+    params << channelEncode(bufferInfo.bufferName(), msg);
   emit putCmd("TOPIC", params);
 }
 
-void UserInputHandler::handleVoice(QString bufname, QString msg) {
+void UserInputHandler::handleVoice(const BufferInfo &bufferInfo, const QString &msg) {
   QStringList nicks = msg.split(' ', QString::SkipEmptyParts);
   QString m = "+"; for(int i = 0; i < nicks.count(); i++) m += 'v';
   QStringList params;
-  params << bufname << m << nicks;
-  emit putCmd("MODE", params);
+  params << bufferInfo.bufferName() << m << nicks;
+  emit putCmd("MODE", serverEncode(params));
+}
+
+void UserInputHandler::handleWait(const BufferInfo &bufferInfo, const QString &msg) {
+  int splitPos = msg.indexOf(';');
+  if(splitPos <= 0)
+    return;
+
+  bool ok;
+  int delay = msg.left(splitPos).trimmed().toInt(&ok);
+  if(!ok)
+    return;
+
+  delay *= 1000;
+
+  QString command = msg.mid(splitPos + 1).trimmed();
+  if(command.isEmpty())
+    return;
+
+  _delayedCommands[startTimer(delay)] = Command(bufferInfo, command);
+}
+
+void UserInputHandler::handleWho(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  emit putCmd("WHO", serverEncode(msg.split(' ')));
+}
+
+void UserInputHandler::handleWhois(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  emit putCmd("WHOIS", serverEncode(msg.split(' ')));
+}
+
+void UserInputHandler::handleWhowas(const BufferInfo &bufferInfo, const QString &msg) {
+  Q_UNUSED(bufferInfo)
+  emit putCmd("WHOWAS", serverEncode(msg.split(' ')));
+}
+
+void UserInputHandler::defaultHandler(QString cmd, const BufferInfo &bufferInfo, const QString &msg) {
+  for(int i = 0; i < coreSession()->aliasManager().count(); i++) {
+    if(coreSession()->aliasManager()[i].name.toLower() == cmd.toLower()) {
+      expand(coreSession()->aliasManager()[i].expansion, bufferInfo, msg);
+      return;
+    }
+  }
+  emit displayMsg(Message::Error, BufferInfo::StatusBuffer, "", QString("Error: %1 %2").arg(cmd, msg));
+}
+
+void UserInputHandler::expand(const QString &alias, const BufferInfo &bufferInfo, const QString &msg) {
+  QRegExp paramRangeR("\\$(\\d+)\\.\\.(\\d*)");
+  QStringList commands = alias.split(QRegExp("; ?"));
+  QStringList params = msg.split(' ');
+  QStringList expandedCommands;
+  for(int i = 0; i < commands.count(); i++) {
+    QString command = commands[i];
+
+    // replace ranges like $1..3
+    if(!params.isEmpty()) {
+      int pos;
+      while((pos = paramRangeR.indexIn(command)) != -1) {
+	int start = paramRangeR.cap(1).toInt();
+	bool ok;
+	int end = paramRangeR.cap(2).toInt(&ok);
+	if(!ok) {
+	  end = params.count();
+	}
+	if(end < start)
+	  command = command.replace(pos, paramRangeR.matchedLength(), QString());
+	else {
+	  command = command.replace(pos, paramRangeR.matchedLength(), QStringList(params.mid(start - 1, end - start + 1)).join(" "));
+	}
+      }
+    }
+
+    for(int j = params.count(); j > 0; j--) {
+      IrcUser *ircUser = network()->ircUser(params[j - 1]);
+      command = command.replace(QString("$%1:hostname").arg(j), ircUser ? ircUser->host() : QString("*"));
+      command = command.replace(QString("$%1").arg(j), params[j - 1]);
+    }
+    command = command.replace("$0", msg);
+    command = command.replace("$channelname", bufferInfo.bufferName());
+    command = command.replace("$currentnick", network()->myNick());
+    expandedCommands << command;
+  }
+
+  while(!expandedCommands.isEmpty()) {
+    QString command;
+    if(expandedCommands[0].trimmed().toLower().startsWith("/wait")) {
+      command = expandedCommands.join("; ");
+      expandedCommands.clear();
+    } else {
+      command = expandedCommands.takeFirst();
+    }
+    handleUserInput(bufferInfo, command);
+  }
+}
+
+
+void UserInputHandler::putPrivmsg(const QByteArray &target, const QByteArray &message) {
+  static const char *cmd = "PRIVMSG";
+  int overrun = lastParamOverrun(cmd, QList<QByteArray>() << target << message);
+  if(overrun) {
+    static const char *splitter = " .,-";
+    int maxSplitPos = message.count() - overrun;
+    int splitPos = -1;
+    for(const char *splitChar = splitter; *splitChar != 0; splitChar++) {
+      splitPos = qMax(splitPos, message.lastIndexOf(*splitChar, maxSplitPos));
+    }
+    if(splitPos <= 0) {
+      splitPos = maxSplitPos;
+    }
+    putCmd(cmd, QList<QByteArray>() << target << message.left(splitPos));
+    putPrivmsg(target, message.mid(splitPos));
+    return;
+  } else {
+    putCmd(cmd, QList<QByteArray>() << target << message);
+  }
 }
 
+// returns 0 if the message will not be chopped by the irc server or number of chopped bytes if message is too long
+int UserInputHandler::lastParamOverrun(const QString &cmd, const QList<QByteArray> &params) {
+  // the server will pass our message trunkated to 512 bytes including CRLF with the following format:
+  // ":prefix COMMAND param0 param1 :lastparam"
+  // where prefix = "nickname!user@host"
+  // that means that the last message can be as long as:
+  // 512 - nicklen - userlen - hostlen - commandlen - sum(param[0]..param[n-1])) - 2 (for CRLF) - 4 (":!@" + 1space between prefix and command) - max(paramcount - 1, 0) (space for simple params) - 2 (space and colon for last param)
+  IrcUser *me = network()->me();
+  int maxLen = 480 - cmd.toAscii().count(); // educated guess in case we don't know us (yet?)
+
+  if(me)
+    maxLen = 512 - serverEncode(me->nick()).count() - serverEncode(me->user()).count() - serverEncode(me->host()).count() - cmd.toAscii().count() - 6;
 
-void UserInputHandler::defaultHandler(QString cmd, QString bufname, QString msg) {
-  emit displayMsg(Message::Error, "", QString("Error: %1 %2").arg(cmd).arg(msg));
+  if(!params.isEmpty()) {
+    for(int i = 0; i < params.count() - 1; i++) {
+      maxLen -= (params[i].count() + 1);
+    }
+    maxLen -= 2; // " :" last param separator;
 
+    if(params.last().count() > maxLen) {
+      return params.last().count() - maxLen;
+    } else {
+      return 0;
+    }
+  } else {
+    return 0;
+  }
 }
 
+void UserInputHandler::timerEvent(QTimerEvent *event) {
+  if(!_delayedCommands.contains(event->timerId())) {
+    QObject::timerEvent(event);
+    return;
+  }
+  BufferInfo bufferInfo = _delayedCommands[event->timerId()].bufferInfo;
+  QString rawCommand = _delayedCommands[event->timerId()].command;
+  _delayedCommands.remove(event->timerId());
+  event->accept();
 
+  // the stored command might be the result of an alias expansion, so we need to split it up again
+  QStringList commands = rawCommand.split(QRegExp("; ?"));
+  foreach(QString command, commands) {
+    handleUserInput(bufferInfo, command);
+  }
+}