X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcore%2Fserver.cpp;fp=src%2Fcore%2Fserver.cpp;h=e5ed4eb33f32638588c4221da2264049416ad32a;hp=0000000000000000000000000000000000000000;hb=077d44f36d2f5c730283ef6be839aea7dd073d56;hpb=f0a6776fc5102ff6a7fe1469917fe231e4cd3a8a

diff --git a/src/core/server.cpp b/src/core/server.cpp
new file mode 100644
index 00000000..e5ed4eb3
--- /dev/null
+++ b/src/core/server.cpp
@@ -0,0 +1,906 @@
+/***************************************************************************
+ *   Copyright (C) 2005-07 by The Quassel Team                             *
+ *   devel@quassel-irc.org                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   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.             *
+ ***************************************************************************/
+
+#include "util.h"
+#include "global.h"
+#include "server.h"
+#include "message.h"
+
+#include <QMetaObject>
+#include <QDateTime>
+
+Server::Server(UserId uid, QString net) : user(uid), network(net) {
+  QString MQUOTE = QString('\020');
+  ctcpMDequoteHash[MQUOTE + '0'] = QString('\000');
+  ctcpMDequoteHash[MQUOTE + 'n'] = QString('\n');
+  ctcpMDequoteHash[MQUOTE + 'r'] = QString('\r');
+  ctcpMDequoteHash[MQUOTE + MQUOTE] = MQUOTE;
+
+  XDELIM = QString('\001');
+  QString XQUOTE = QString('\134');
+  ctcpXDelimDequoteHash[XQUOTE + XQUOTE] = XQUOTE;
+  ctcpXDelimDequoteHash[XQUOTE + QString('a')] = XDELIM;
+}
+
+Server::~Server() {
+
+}
+
+void Server::run() {
+  connect(&socket, SIGNAL(connected()), this, SLOT(socketConnected()));
+  connect(&socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
+  connect(&socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(socketError(QAbstractSocket::SocketError)));
+  connect(&socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), this, SLOT(socketStateChanged(QAbstractSocket::SocketState)));
+  connect(&socket, SIGNAL(readyRead()), this, SLOT(socketHasData()));
+
+  exec();
+}
+
+void Server::sendState() {
+  VarMap s;
+  VarMap n, t;
+  foreach(QString key, nicks.keys())  { n[key] = nicks[key]; }
+  foreach(QString key, topics.keys()) { t[key] = topics[key];}
+  s["Nicks"] = n;
+  s["Topics"] = t;
+  s["OwnNick"] = ownNick;
+  s["ServerSupports"] = serverSupports;
+  emit serverState(network, s);
+}
+
+void Server::connectToIrc(QString net) {
+  if(net != network) return; // not me!
+  networkSettings = Global::data(user, "Networks").toMap()[net].toMap();
+  identity = Global::data(user, "Identities").toMap()[networkSettings["Identity"].toString()].toMap();
+  QList<QVariant> servers = networkSettings["Servers"].toList();
+  QString host = servers[0].toMap()["Address"].toString();
+  quint16 port = servers[0].toMap()["Port"].toUInt();
+  displayStatusMsg(QString("Connecting to %1:%2...").arg(host).arg(port));
+  socket.connectToHost(host, port);
+}
+
+void Server::disconnectFromIrc(QString net) {
+  if(net != network) return; // not me!
+  socket.disconnectFromHost();
+}
+
+void Server::socketHasData() {
+  while(socket.canReadLine()) {
+    QString s = socket.readLine().trimmed();
+    //qDebug() << "Read" << s;
+    emit recvRawServerMsg(s);
+    //Message *msg = Message::createFromServerString(this, s);
+    handleServerMsg(s);
+  }
+}
+
+void Server::socketError( QAbstractSocket::SocketError err ) {
+  //qDebug() << "Socket Error!";
+  //emit error(err);
+}
+
+void Server::socketConnected( ) {
+  emit connected(network);
+  putRawLine(QString("NICK :%1").arg(identity["NickList"].toStringList()[0]));  // FIXME: try more nicks if error occurs
+  putRawLine(QString("USER %1 8 * :%2").arg(identity["Ident"].toString()).arg(identity["RealName"].toString()));
+}
+
+void Server::socketDisconnected( ) {
+  //qDebug() << "Socket disconnected!";
+  emit disconnected(network);
+  topics.clear();
+  nicks.clear();
+}
+
+void Server::socketStateChanged(QAbstractSocket::SocketState state) {
+  //qDebug() << "Socket state changed: " << state;
+}
+
+QString Server::updateNickFromMask(QString mask) {
+  QString user = userFromMask(mask);
+  QString host = hostFromMask(mask);
+  QString nick = nickFromMask(mask);
+  if(nicks.contains(nick) && !user.isEmpty() && !host.isEmpty()) {
+    VarMap n = nicks[nick];
+    if(n["User"].toString() != user || n["Host"].toString() != host) {
+      if(!n["User"].toString().isEmpty() || !n["Host"].toString().isEmpty())
+        qWarning(QString("Strange: Hostmask for nick %1 has changed!").arg(nick).toAscii());
+      n["User"] = user; n["Host"] = host;
+      nicks[nick] = n;
+      emit nickUpdated(network, nick, n);
+    }
+  }
+  return nick;
+}
+
+void Server::userInput(QString net, QString buf, QString msg) {
+  if(net != network) return; // not me!
+  //msg = msg.trimmed(); // remove whitespace from start and end
+  if(msg.isEmpty()) return;
+  if(!msg.startsWith('/')) {
+    msg = QString("/SAY ") + msg;
+  }
+  handleUserInput(buf, msg);
+}
+
+void Server::putRawLine(QString s) {
+//  qDebug() << "SentRaw: " << s;
+  s += "\r\n";
+  socket.write(s.toAscii());
+}
+
+void Server::putCmd(QString cmd, QStringList params, QString prefix) {
+  QString m;
+  if(!prefix.isEmpty()) m += ":" + prefix + " ";
+  m += cmd.toUpper();
+  for(int i = 0; i < params.size() - 1; i++) {
+    m += " " + params[i];
+  }
+  if(!params.isEmpty()) m += " :" + params.last();
+//  qDebug() << "Sent: " << m;
+  m += "\r\n";
+  socket.write(m.toAscii());
+}
+
+/** Handle a raw message string sent by the server. We try to find a suitable handler, otherwise we call a default handler. */
+void Server::handleServerMsg(QString msg) {
+  try {
+    if(msg.isEmpty()) {
+      qWarning() << "Received empty string from server!";
+      return;
+    }
+    // OK, first we split the raw message into its various parts...
+    QString prefix = "";
+    QString cmd;
+    QStringList params;
+
+    // check for prefix by checking for a colon as the first char
+    if(msg[0] == ':') {
+      msg.remove(0,1);
+      prefix = msg.section(' ', 0, 0);
+      msg = msg.section(' ', 1);
+    }
+
+    // next string without a whitespace is the command
+    cmd = msg.section(' ', 0, 0).toUpper();
+    msg = msg.mid(cmd.length());
+
+    // get the parameters
+    QString trailing = "";
+    if(msg.contains(" :")) {
+      trailing = msg.section(" :", 1);
+      msg = msg.section(" :", 0, 0);
+    }
+    if(!msg.isEmpty()) {
+      params << msg.split(' ', QString::SkipEmptyParts);
+    }
+    if(!trailing.isEmpty()) {
+      params << trailing;
+    }
+
+    // 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) {
+      Q_ASSERT(params.count() > 0); // Violation to RFC
+      params.removeFirst();
+    }
+
+    // Now we try to find a handler for this message. BTW, I do love the Trolltech guys ;-)
+    QString hname = cmd.toLower();
+    hname[0] = hname[0].toUpper();
+    hname = "handleServer" + hname;
+    if(!QMetaObject::invokeMethod(this, hname.toAscii(), Q_ARG(QString, prefix), Q_ARG(QStringList, params))) {
+      // Ok. Default handler it is.
+      defaultServerHandler(cmd, prefix, params);
+    }
+  } catch(Exception e) {
+    emit displayMsg(Message::Error, "", e.msg());
+  }
+}
+
+void Server::defaultServerHandler(QString cmd, QString prefix, QStringList params) {
+  uint num = cmd.toUInt();
+  if(num) {
+    // A lot of server messages don't really need their own handler because they don't do much.
+    // Catch and handle these here.
+    switch(num) {
+      // Welcome, status, info messages. Just display these.
+      case 2: case 3: case 4: case 5: case 251: case 252: case 253: case 254: case 255: case 372: case 375:
+        emit displayMsg(Message::Server, "", params.join(" "), prefix);
+        break;
+      // Server error messages without param, just display them
+      case 409: case 411: case 412: case 422: case 424: case 445: case 446: case 451: case 462:
+      case 463: case 464: case 465: case 466: case 472: case 481: case 483: case 485: case 491: case 501: case 502:
+      case 431: // ERR_NONICKNAMEGIVEN 
+        emit displayMsg(Message::Error, "", params.join(" "), prefix);
+        break;
+      // Server error messages, display them in red. First param will be appended.
+      case 401: case 402: case 403: case 404: case 406: case 408: case 415: case 421: case 442:
+      { QString p = params.takeFirst();
+        emit displayMsg(Message::Error, "", params.join(" ") + " " + p, prefix);
+        break;
+      }
+      // Server error messages which will be displayed with a colon between the first param and the rest
+      case 413: case 414: case 423: case 441: case 444: case 461:
+      case 467: case 471: case 473: case 474: case 475: case 476: case 477: case 478: case 482:
+      case 436: // ERR_NICKCOLLISION
+      { QString p = params.takeFirst();
+        emit displayMsg(Message::Error, "", p + ": " + params.join(" "));
+        break;
+      }
+      // Ignore these commands.
+      case 366: case 376:
+        break;
+
+      // Everything else will be marked in red, so we can add them somewhere.
+      default:
+        emit displayMsg(Message::Error, "", cmd + " " + params.join(" "), prefix);
+    }
+    //qDebug() << prefix <<":"<<cmd<<params;
+  } else {
+    emit displayMsg(Message::Error, "", QString("Unknown: ") + cmd + " " + params.join(" "), prefix);
+    //qDebug() << prefix <<":"<<cmd<<params;
+  }
+}
+
+void Server::handleUserInput(QString bufname, QString usrMsg) {
+  try {
+    /* Looks like we don't need core-side buffers...
+    Buffer *buffer = 0;
+    if(!bufname.isEmpty()) {
+      Q_ASSERT(buffers.contains(bufname));
+      buffer = buffers[bufname];
+    }
+    */
+    QString cmd = usrMsg.section(' ', 0, 0).remove(0, 1).toUpper();
+    QString msg = usrMsg.section(' ', 1);
+    QString hname = cmd.toLower();
+    hname[0] = hname[0].toUpper();
+    hname = "handleUser" + hname;
+    if(!QMetaObject::invokeMethod(this, hname.toAscii(), Q_ARG(QString, bufname), Q_ARG(QString, msg))) {
+        // Ok. Default handler it is.
+      defaultUserHandler(bufname, cmd, msg);
+    }
+  } catch(Exception e) {
+    emit displayMsg(Message::Error, "", e.msg());
+  }
+}
+
+void Server::defaultUserHandler(QString bufname, QString cmd, QString msg) {
+  emit displayMsg(Message::Error, "", QString("Error: %1 %2").arg(cmd).arg(msg));
+
+}
+
+QStringList Server::providesUserHandlers() {
+  QStringList userHandlers;
+  for(int i=0; i < metaObject()->methodCount(); i++) {
+    QString methodSignature(metaObject()->method(i).signature());
+    if (methodSignature.startsWith("handleUser")) {
+      methodSignature = methodSignature.section('(',0,0);  // chop the attribute list
+      methodSignature = methodSignature.mid(10); // strip "handleUser"
+      userHandlers << methodSignature;
+    }
+  }
+  return userHandlers;
+}
+
+QString Server::ctcpDequote(QString message) {
+  QString dequotedMessage;
+  QString messagepart;
+  QHash<QString, QString>::iterator ctcpquote;
+  
+  // copy dequote Message
+  for(int i = 0; i < message.size(); i++) {
+    messagepart = message[i];
+    if(i+1 < message.size()) {
+      for(ctcpquote = ctcpMDequoteHash.begin(); ctcpquote != ctcpMDequoteHash.end(); ++ctcpquote) {
+        if(message.mid(i,2) == ctcpquote.key()) {
+          dequotedMessage += ctcpquote.value();
+          i++;
+          break;
+        }
+      }
+    }
+    dequotedMessage += messagepart;
+  }
+  return dequotedMessage;
+}
+
+
+QString Server::ctcpXdelimDequote(QString message) {
+  QString dequotedMessage;
+  QString messagepart;
+  QHash<QString, QString>::iterator xdelimquote;
+
+  for(int i = 0; i < message.size(); i++) {
+    messagepart = message[i];
+    if(i+1 < message.size()) {
+      for(xdelimquote = ctcpXDelimDequoteHash.begin(); xdelimquote != ctcpXDelimDequoteHash.end(); ++xdelimquote) {
+        if(message.mid(i,2) == xdelimquote.key()) {
+          messagepart = xdelimquote.value();
+          i++;
+          break;
+        }
+      }
+    }
+    dequotedMessage += messagepart;
+  }
+  return dequotedMessage;
+}
+
+QStringList Server::parseCtcp(CtcpType ctcptype, QString prefix, QString target, QString message) {
+  QStringList messages;
+  QString ctcp;
+  
+  //lowlevel message dequote
+  QString dequotedMessage = ctcpDequote(message);
+  
+  // extract tagged / extended data
+  while(dequotedMessage.contains(XDELIM)) {
+    messages << dequotedMessage.section(XDELIM,0,0);
+    ctcp = ctcpXdelimDequote(dequotedMessage.section(XDELIM,1,1));
+    dequotedMessage = dequotedMessage.section(XDELIM,2,2);
+    
+    //dispatch the ctcp command
+    QString ctcpcmd = ctcp.section(' ', 0, 0);
+    QString ctcpparam = ctcp.section(' ', 1);
+    
+    QString hname = ctcpcmd.toLower();
+    hname[0] = hname[0].toUpper();
+    hname = "handleCtcp" + hname;
+    if(!QMetaObject::invokeMethod(this, hname.toAscii(), Q_ARG(CtcpType, ctcptype), Q_ARG(QString, prefix), Q_ARG(QString, target), Q_ARG(QString, ctcpparam))) {
+      // Ok. Default handler it is.
+      defaultCtcpHandler(ctcptype, prefix, ctcpcmd, target, ctcpparam);
+    }
+  }
+  if(!dequotedMessage.isEmpty()) {
+    messages << dequotedMessage;
+  }
+  return messages;
+}
+
+QString Server::ctcpPack(QString ctcpTag, QString message) {
+  return XDELIM + ctcpTag + ' ' + message + XDELIM;
+}
+
+void Server::ctcpQuery(QString bufname, QString ctcpTag, QString message) {
+  QStringList params;
+  params << bufname << ctcpPack(ctcpTag, message);
+  putCmd("PRIVMSG", params); 
+}
+
+void Server::ctcpReply(QString bufname, QString ctcpTag, QString message) {
+  QStringList params;
+  params << bufname << ctcpPack(ctcpTag, message);
+  putCmd("NOTICE", params);
+}
+
+/**********************************************************************************/
+
+/*
+void Server::handleUser(QString bufname, QString msg) {
+
+
+}
+*/
+
+void Server::handleUserAway(QString bufname, QString msg) {
+  putCmd("AWAY", QStringList(msg));
+}
+
+void Server::handleUserDeop(QString bufname, 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;
+  putCmd("MODE", params);
+}
+
+void Server::handleUserDevoice(QString bufname, 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;
+  putCmd("MODE", params);
+}
+
+void Server::handleUserInvite(QString bufname, QString msg) {
+  QStringList params;
+  params << msg << bufname;
+  putCmd("INVITE", params);
+}
+
+void Server::handleUserJoin(QString bufname, QString msg) {
+  putCmd("JOIN", QStringList(msg));
+}
+
+void Server::handleUserKick(QString bufname, QString msg) {
+  QStringList params;
+  params << bufname << msg.split(' ', QString::SkipEmptyParts);
+  putCmd("KICK", params);
+}
+
+void Server::handleUserList(QString bufname, QString msg) {
+  putCmd("LIST", msg.split(' ', QString::SkipEmptyParts));
+}
+
+void Server::handleUserMode(QString bufname, QString msg) {
+  putCmd("MODE", msg.split(' ', QString::SkipEmptyParts));
+}
+
+// TODO: show privmsgs
+void Server::handleUserMsg(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;
+  putCmd("PRIVMSG", params);
+}
+
+void Server::handleUserNick(QString bufname, QString msg) {
+  QString nick = msg.section(' ', 0, 0);
+  putCmd("NICK", QStringList(nick));
+}
+
+void Server::handleUserOp(QString bufname, 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;
+  putCmd("MODE", params);
+}
+
+void Server::handleUserPart(QString bufname, QString msg) {
+  QStringList params;
+  params << bufname << msg;
+  putCmd("PART", params);
+}
+
+// TODO: implement queries
+void Server::handleUserQuery(QString bufname, QString msg) {
+  QString nick = msg.section(' ', 0, 0);
+  if(!nick.isEmpty()) emit queryRequested(network, nick);
+}
+
+void Server::handleUserQuit(QString bufname, QString msg) {
+  putCmd("QUIT", QStringList(msg));
+}
+
+void Server::handleUserQuote(QString bufname, QString msg) {
+  putRawLine(msg);
+}
+
+void Server::handleUserSay(QString bufname, QString msg) {
+  if(bufname.isEmpty()) return;  // server buffer
+  QStringList params;
+  params << bufname << msg;
+  putCmd("PRIVMSG", params);
+  if(isChannelName(bufname)) {
+    emit displayMsg(Message::Plain, params[0], msg, ownNick, Message::Self);
+  } else {
+    emit displayMsg(Message::Plain, params[0], msg, ownNick, Message::Self|Message::PrivMsg);
+  }
+}
+
+void Server::handleUserMe(QString bufname, QString msg) {
+  if(bufname.isEmpty()) return; // server buffer
+  ctcpQuery(bufname, "ACTION", msg);
+  emit displayMsg(Message::Action, bufname, msg, ownNick);
+}
+
+void Server::handleUserTopic(QString bufname, QString msg) {
+  if(bufname.isEmpty()) return;
+  QStringList params;
+  params << bufname << msg;
+  putCmd("TOPIC", params);
+}
+
+void Server::handleUserVoice(QString bufname, 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;
+  putCmd("MODE", params);
+}
+
+/**********************************************************************************/
+
+void Server::handleServerJoin(QString prefix, QStringList params) {
+  Q_ASSERT(params.count() == 1);
+  QString nick = updateNickFromMask(prefix);
+  emit displayMsg(Message::Join, params[0], params[0], prefix);
+  if(nick == ownNick) {
+  //  Q_ASSERT(!buffers.contains(params[0]));  // cannot join a buffer twice!
+  //  Buffer *buf = new Buffer(params[0]);
+  //  buffers[params[0]] = buf;
+    topics[params[0]] = "";
+    emit topicSet(network, params[0], "");
+  } //else {
+    VarMap n;
+    if(nicks.contains(nick)) {
+      n = nicks[nick];
+      VarMap chans = n["Channels"].toMap();
+      // Q_ASSERT(!chans.keys().contains(params[0])); TODO uncomment
+      chans[params[0]] = VarMap();
+      n["Channels"] = chans;
+      nicks[nick] = n;
+      emit nickUpdated(network, nick, n);
+    } else {
+      VarMap chans;
+      chans[params[0]] = VarMap();
+      n["Channels"] = chans;
+      n["User"] = userFromMask(prefix);
+      n["Host"] = hostFromMask(prefix);
+      nicks[nick] = n;
+      emit nickAdded(network, nick, n);
+    }
+    //emit displayMsg(Message::Join, params[0], params[0], prefix);
+  //}
+}
+
+void Server::handleServerKick(QString prefix, QStringList params) {
+  QString kicker = updateNickFromMask(prefix);
+  QString nick = params[1];
+  Q_ASSERT(nicks.contains(nick));
+  VarMap n = nicks[nick];
+  VarMap chans = n["Channels"].toMap();
+  Q_ASSERT(chans.contains(params[0]));
+  chans.remove(params[0]);
+  QString msg = nick;
+  if(params.count() > 2) msg = QString("%1 %2").arg(msg).arg(params[2]);
+  emit displayMsg(Message::Kick, params[0], msg, prefix);
+  if(chans.count() > 0) {
+    n["Channels"] = chans;
+    nicks[nick] = n;
+    emit nickUpdated(network, nick, n);
+  } else {
+    nicks.remove(nick);
+    emit nickRemoved(network, nick);
+  }
+  if(nick == ownNick) {
+    topics.remove(params[0]);
+  }
+}
+
+void Server::handleServerMode(QString prefix, QStringList params) {
+  if(isChannelName(params[0])) {
+    // TODO only channel-user modes supported by now
+    QString prefixes = serverSupports["PrefixModes"].toString();
+    QString modes = params[1];
+    int p = 2;
+    int m = 0;
+    bool add = true;
+    while(m < modes.length()) {
+      if(modes[m] == '+') { add = true; m++; continue; }
+      if(modes[m] == '-') { add = false; m++; continue; }
+      if(prefixes.contains(modes[m])) {  // it's a user channel mode
+        Q_ASSERT(params.count() > m);
+        QString nick = params[p++];
+        if(nicks.contains(nick)) {  // sometimes, a server might try to set a MODE on a nick that is no longer there
+          VarMap n = nicks[nick]; VarMap clist = n["Channels"].toMap(); VarMap chan = clist[params[0]].toMap();
+          QString mstr = chan["Mode"].toString();
+          add ? mstr += modes[m] : mstr.remove(modes[m]);
+          chan["Mode"] = mstr; clist[params[0]] = chan; n["Channels"] = clist; nicks[nick] = n;
+          emit nickUpdated(network, nick, n);
+        }
+        m++;
+      } else {
+        // TODO add more modes
+        m++;
+      }
+    }
+    emit displayMsg(Message::Mode, params[0], params.join(" "), prefix);
+  } else {
+    //Q_ASSERT(nicks.contains(params[0]));
+    //VarMap n = nicks[params[0]].toMap();
+    //QString mode = n["Mode"].toString();
+    emit displayMsg(Message::Mode, "", params.join(" "));
+  }
+}
+
+void Server::handleServerNick(QString prefix, QStringList params) {
+  QString oldnick = updateNickFromMask(prefix);
+  QString newnick = params[0];
+  VarMap v = nicks.take(oldnick);
+  nicks[newnick] = v;
+  VarMap chans = v["Channels"].toMap();
+  foreach(QString c, chans.keys()) {
+    if(oldnick != ownNick) { emit displayMsg(Message::Nick, c, newnick, prefix); }
+    else { emit displayMsg(Message::Nick, c, newnick, newnick); }
+  }
+  emit nickRenamed(network, oldnick, newnick);
+  if(oldnick == ownNick) {
+    ownNick = newnick;
+    emit ownNickSet(network, newnick);
+  }
+}
+
+void Server::handleServerNotice(QString prefix, QStringList params) {
+  //Message msg(Message::Notice, params[1], prefix);
+  if(currentServer.isEmpty() || prefix == currentServer) emit displayMsg(Message::Server, "", params[1], prefix);
+  else emit displayMsg(Message::Notice, "", params[1], prefix);
+}
+
+void Server::handleServerPart(QString prefix, QStringList params) {
+  QString nick = updateNickFromMask(prefix);
+  Q_ASSERT(nicks.contains(nick));
+  VarMap n = nicks[nick];
+  VarMap chans = n["Channels"].toMap();
+  Q_ASSERT(chans.contains(params[0]));
+  chans.remove(params[0]);
+  QString msg;
+  if(params.count() > 1) msg = params[1];
+  emit displayMsg(Message::Part, params[0], msg, prefix);
+  if(chans.count() > 0) {
+    n["Channels"] = chans;
+    nicks[nick] = n;
+    emit nickUpdated(network, nick, n);
+  } else {
+    nicks.remove(nick);
+    emit nickRemoved(network, nick);
+  }
+  if(nick == ownNick) {
+    Q_ASSERT(topics.contains(params[0]));
+    topics.remove(params[0]);
+  }
+}
+
+void Server::handleServerPing(QString prefix, QStringList params) {
+  putCmd("PONG", params);
+}
+
+void Server::handleServerPrivmsg(QString prefix, QStringList params) {
+  updateNickFromMask(prefix);
+  Q_ASSERT(params.count() >= 2);
+  if(params.count()<2) emit displayMsg(Message::Plain, params[0], "", prefix);
+  else {
+    // it's possible to pack multiple privmsgs into one param using ctcp
+    QStringList messages = parseCtcp(Server::CtcpQuery, prefix, params[0], params[1]);
+    if(params[0].toLower() == ownNick.toLower()) {  // Freenode sends nickname in lower case!
+      foreach(QString message, messages) {
+        if(!message.isEmpty()) {
+          emit displayMsg(Message::Plain, "", message, prefix, Message::PrivMsg);
+        }
+      }
+      
+    } else {
+      //qDebug() << prefix << params;
+      Q_ASSERT(isChannelName(params[0]));  // should be channel!
+      foreach(QString message, messages) {
+        if(!message.isEmpty()) {
+          emit displayMsg(Message::Plain, params[0], message, prefix);
+        }
+      }
+    }
+  }
+}
+
+void Server::handleServerQuit(QString prefix, QStringList params) {
+  QString nick = updateNickFromMask(prefix);
+  Q_ASSERT(nicks.contains(nick));
+  VarMap chans = nicks[nick]["Channels"].toMap();
+  QString msg;
+  if(params.count()) msg = params[0];
+  foreach(QString c, chans.keys()) {
+    emit displayMsg(Message::Quit, c, msg, prefix);
+  }
+  nicks.remove(nick);
+  emit nickRemoved(network, nick);
+}
+
+void Server::handleServerTopic(QString prefix, QStringList params) {
+  QString nick = updateNickFromMask(prefix);
+  Q_ASSERT(nicks.contains(nick));
+  topics[params[0]] = params[1];
+  emit topicSet(network, params[0], params[1]);
+  emit displayMsg(Message::Server, params[0], tr("%1 has changed topic for %2 to: \"%3\"").arg(nick).arg(params[0]).arg(params[1]));
+}
+
+/* RPL_WELCOME */
+void Server::handleServer001(QString prefix, QStringList params) {
+  // there should be only one param: "Welcome to the Internet Relay Network <nick>!<user>@<host>"
+  currentServer = prefix;
+  ownNick = params[0].section(' ', -1, -1).section('!', 0, 0);
+  VarMap n;
+  n["Channels"] = VarMap();
+  nicks[ownNick] = n;
+  emit ownNickSet(network, ownNick);
+  emit nickAdded(network, ownNick, VarMap());
+  emit displayMsg(Message::Server, "", params[0], prefix);
+  // send performlist
+  QStringList performList = networkSettings["Perform"].toString().split( "\n" );
+  int count = performList.count();
+  for(int a = 0; a < count; a++) {
+    if(!performList[a].isEmpty() ) {
+      userInput(network, "", performList[a]);
+    }
+  }
+}
+
+/* RPL_ISUPPORT */
+// TODO Complete 005 handling, also use sensible defaults for non-sent stuff
+void Server::handleServer005(QString prefix, QStringList params) {
+  //qDebug() << prefix << params;
+  params.removeLast();
+  foreach(QString p, params) {
+    QString key = p.section("=", 0, 0);
+    QString val = p.section("=", 1);
+    serverSupports[key] = val;
+    // handle some special cases
+    if(key == "PREFIX") {
+      VarMap foo; QString modes, prefixes;
+      Q_ASSERT(val.contains(')') && val.startsWith('('));
+      int m = 1, p;
+      for(p = 2; p < val.length(); p++) if(val[p] == ')') break;
+      p++;
+      for(; val[m] != ')'; m++, p++) {
+        Q_ASSERT(p < val.length());
+        foo[QString(val[m])] = QString(val[p]);
+        modes += val[m]; prefixes += val[p];
+      }
+      serverSupports["PrefixModes"] = modes; serverSupports["Prefixes"] = prefixes;
+      serverSupports["ModePrefixMap"] = foo;
+    }
+  }
+}
+
+
+/* RPL_NOTOPIC */
+void Server::handleServer331(QString prefix, QStringList params) {
+  topics[params[0]] = "";
+  emit topicSet(network, params[0], "");
+  emit displayMsg(Message::Server, params[0], tr("No topic is set for %1.").arg(params[0]));
+}
+
+/* RPL_TOPIC */
+void Server::handleServer332(QString prefix, QStringList params) {
+  topics[params[0]] = params[1];
+  emit topicSet(network, params[0], params[1]);
+  emit displayMsg(Message::Server, params[0], tr("Topic for %1 is \"%2\"").arg(params[0]).arg(params[1]));
+}
+
+/* Topic set by... */
+void Server::handleServer333(QString prefix, QStringList params) {
+  emit displayMsg(Message::Server, params[0],
+                    tr("Topic set by %1 on %2").arg(params[1]).arg(QDateTime::fromTime_t(params[2].toUInt()).toString()));
+}
+
+/* RPL_NAMREPLY */
+void Server::handleServer353(QString prefix, QStringList params) {
+  params.removeFirst(); // = or *
+  QString buf = params.takeFirst();
+  QString prefixes = serverSupports["Prefixes"].toString();
+  foreach(QString nick, params[0].split(' ')) {
+    QString mode = "", pfx = "";
+    if(prefixes.contains(nick[0])) {
+      pfx = nick[0];
+      for(int i = 0;; i++)
+        if(prefixes[i] == nick[0]) { mode = serverSupports["PrefixModes"].toString()[i]; break; }
+      nick.remove(0,1);
+    }
+    VarMap c; c["Mode"] = mode; c["Prefix"] = pfx;
+    if(nicks.contains(nick)) {
+      VarMap n = nicks[nick];
+      VarMap chans = n["Channels"].toMap();
+      chans[buf] = c;
+      n["Channels"] = chans;
+      nicks[nick] = n;
+      emit nickUpdated(network, nick, n);
+    } else {
+      VarMap n; VarMap c; VarMap chans;
+      c["Mode"] = mode;
+      chans[buf] = c;
+      n["Channels"] = chans;
+      nicks[nick] = n;
+      emit nickAdded(network, nick, n);
+    }
+  }
+}
+
+/* ERR_ERRONEUSNICKNAME */
+void Server::handleServer432(QString prefix, QStringList params) {
+  if(params.size() < 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
+    emit displayMsg(Message::Error, "", tr("There is a nickname in your identity's nicklist which contains illegal characters"));
+    emit displayMsg(Message::Error, "", tr("Due to a bug in Unreal IRCd (and maybe other irc-servers too) we're unable to determine the erroneous nick"));
+    emit displayMsg(Message::Error, "", tr("Please use: /nick <othernick> to continue or clean up your nicklist"));
+  } else {
+    QString errnick = params[0];
+    emit displayMsg(Message::Error, "", tr("Nick %1 contains illegal characters").arg(errnick));
+    // if there is a problem while connecting to the server -> we handle it
+    // TODO rely on another source...
+    if(currentServer.isEmpty()) {
+      QStringList desiredNicks = identity["NickList"].toStringList();
+      int nextNick = desiredNicks.indexOf(errnick) + 1;
+      if (desiredNicks.size() > nextNick) {
+        putCmd("NICK", QStringList(desiredNicks[nextNick]));
+      } else {
+        emit displayMsg(Message::Error, "", tr("No free and valid nicks in nicklist found. use: /nick <othernick> to continue"));
+      }
+    }
+  }
+}
+
+/* ERR_NICKNAMEINUSE */
+void Server::handleServer433(QString prefix, QStringList params) {
+  QString errnick = params[0];
+  emit displayMsg(Message::Error, "", tr("Nick %1 is already taken").arg(errnick));
+  // if there is a problem while connecting to the server -> we handle it
+  // TODO rely on another source...
+  if(currentServer.isEmpty()) {
+    QStringList desiredNicks = identity["NickList"].toStringList();
+    int nextNick = desiredNicks.indexOf(errnick) + 1;
+    if (desiredNicks.size() > nextNick) {
+      putCmd("NICK", QStringList(desiredNicks[nextNick]));
+    } else {
+      emit displayMsg(Message::Error, "", tr("No free and valid nicks in nicklist found. use: /nick <othernick> to continue"));
+    }
+  }
+}
+
+/***********************************************************************************/
+// CTCP HANDLER
+
+void Server::handleCtcpAction(CtcpType ctcptype, QString prefix, QString target, QString param) {
+  emit displayMsg(Message::Action, target, param, prefix);
+}
+
+void Server::handleCtcpPing(CtcpType ctcptype, QString prefix, QString target, QString param) {
+  if(ctcptype == CtcpQuery) {
+    ctcpReply(nickFromMask(prefix), "PING", param);
+    emit displayMsg(Message::Server, "", tr("Received CTCP PING request by %1").arg(prefix));
+  } else {
+    // display ping answer
+  }
+}
+
+void Server::handleCtcpVersion(CtcpType ctcptype, QString prefix, QString target, QString param) {
+  if(ctcptype == CtcpQuery) {
+    // FIXME use real Info about quassel :)
+    //ctcpReply(nickFromMask(prefix), "VERSION", QString("Quassel:pre Release:*nix"));
+    ctcpReply(nickFromMask(prefix), "VERSION", QString("Quassel IRC (Pre-Release) - http://www.quassel-irc.org"));
+    emit displayMsg(Message::Server, "", tr("Received CTCP VERSION request by %1").arg(prefix));
+  } else {
+    // TODO display Version answer
+  }
+}
+
+void Server::defaultCtcpHandler(CtcpType ctcptype, QString prefix, QString cmd, QString target, QString param) {
+  emit displayMsg(Message::Error, "", tr("Received unknown CTCP %1 by %2").arg(cmd).arg(prefix));
+}
+
+
+/***********************************************************************************/
+
+/* Exception classes for message handling */
+Server::ParseError::ParseError(QString cmd, QString prefix, QStringList params) {
+  _msg = QString("Command Parse Error: ") + cmd + params.join(" ");
+
+}
+
+Server::UnknownCmdError::UnknownCmdError(QString cmd, QString prefix, QStringList params) {
+  _msg = QString("Unknown Command: ") + cmd;
+
+}