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/***************************************************************************
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* Copyright (C) 2005-10 by the Quassel Project *
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* devel@quassel-irc.org *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) version 3. *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include "ctcphandler.h"
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#include "coreignorelistmanager.h"
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CtcpHandler::CtcpHandler(CoreNetwork *parent)
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: CoreBasicHandler(parent),
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_ignoreListManager(parent->ignoreListManager())
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QByteArray MQUOTE = QByteArray("\020");
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ctcpMDequoteHash[MQUOTE + '0'] = QByteArray(1, '\000');
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ctcpMDequoteHash[MQUOTE + 'n'] = QByteArray(1, '\n');
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ctcpMDequoteHash[MQUOTE + 'r'] = QByteArray(1, '\r');
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ctcpMDequoteHash[MQUOTE + MQUOTE] = MQUOTE;
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QByteArray XQUOTE = QByteArray("\134");
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ctcpXDelimDequoteHash[XQUOTE + XQUOTE] = XQUOTE;
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ctcpXDelimDequoteHash[XQUOTE + QByteArray("a")] = XDELIM;
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QByteArray CtcpHandler::lowLevelQuote(const QByteArray &message) {
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QByteArray quotedMessage = message;
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QHash<QByteArray, QByteArray> quoteHash = ctcpMDequoteHash;
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QByteArray MQUOTE = QByteArray("\020");
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quoteHash.remove(MQUOTE + MQUOTE);
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quotedMessage.replace(MQUOTE, MQUOTE + MQUOTE);
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QHash<QByteArray, QByteArray>::const_iterator quoteIter = quoteHash.constBegin();
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while(quoteIter != quoteHash.constEnd()) {
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quotedMessage.replace(quoteIter.value(), quoteIter.key());
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QByteArray CtcpHandler::lowLevelDequote(const QByteArray &message) {
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QByteArray dequotedMessage;
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QByteArray messagepart;
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QHash<QByteArray, QByteArray>::iterator ctcpquote;
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// copy dequote Message
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for(int i = 0; i < message.size(); i++) {
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messagepart = message.mid(i,1);
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if(i+1 < message.size()) {
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for(ctcpquote = ctcpMDequoteHash.begin(); ctcpquote != ctcpMDequoteHash.end(); ++ctcpquote) {
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if(message.mid(i,2) == ctcpquote.key()) {
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messagepart = ctcpquote.value();
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dequotedMessage += messagepart;
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return dequotedMessage;
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QByteArray CtcpHandler::xdelimQuote(const QByteArray &message) {
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QByteArray quotedMessage = message;
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QHash<QByteArray, QByteArray>::const_iterator quoteIter = ctcpXDelimDequoteHash.constBegin();
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while(quoteIter != ctcpXDelimDequoteHash.constEnd()) {
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quotedMessage.replace(quoteIter.value(), quoteIter.key());
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QByteArray CtcpHandler::xdelimDequote(const QByteArray &message) {
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QByteArray dequotedMessage;
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QByteArray messagepart;
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QHash<QByteArray, QByteArray>::iterator xdelimquote;
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for(int i = 0; i < message.size(); i++) {
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messagepart = message.mid(i,1);
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if(i+1 < message.size()) {
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for(xdelimquote = ctcpXDelimDequoteHash.begin(); xdelimquote != ctcpXDelimDequoteHash.end(); ++xdelimquote) {
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if(message.mid(i,2) == xdelimquote.key()) {
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messagepart = xdelimquote.value();
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dequotedMessage += messagepart;
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return dequotedMessage;
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void CtcpHandler::parse(Message::Type messageType, const QString &prefix, const QString &target, const QByteArray &message) {
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//lowlevel message dequote
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QByteArray dequotedMessage = lowLevelDequote(message);
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CtcpType ctcptype = messageType == Message::Notice
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Message::Flags flags = (messageType == Message::Notice && !network()->isChannelName(target))
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? Message::Redirected
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// extract tagged / extended data
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int xdelimEndPos = -1;
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QList<QByteArray> replies;
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while((xdelimPos = dequotedMessage.indexOf(XDELIM)) != -1) {
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displayMsg(messageType, target, userDecode(target, dequotedMessage.left(xdelimPos)), prefix, flags);
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xdelimEndPos = dequotedMessage.indexOf(XDELIM, xdelimPos + 1);
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if(xdelimEndPos == -1) {
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// no matching end delimiter found... treat rest of the message as ctcp
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xdelimEndPos = dequotedMessage.count();
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ctcp = xdelimDequote(dequotedMessage.mid(xdelimPos + 1, xdelimEndPos - xdelimPos - 1));
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dequotedMessage = dequotedMessage.mid(xdelimEndPos + 1);
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//dispatch the ctcp command
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QString ctcpcmd = userDecode(target, ctcp.left(spacePos));
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QString ctcpparam = userDecode(target, ctcp.mid(spacePos + 1));
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spacePos = ctcp.indexOf(' ');
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ctcpcmd = userDecode(target, ctcp.left(spacePos));
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ctcpparam = userDecode(target, ctcp.mid(spacePos + 1));
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ctcpcmd = userDecode(target, ctcp);
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ctcpparam = QString();
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if(ctcpcmd.toUpper() == QLatin1String("ACTION") || !_ignoreListManager->ctcpMatch(prefix, network()->networkName(), ctcpcmd.toUpper())) {
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handle(ctcpcmd, Q_ARG(CtcpType, ctcptype), Q_ARG(QString, prefix), Q_ARG(QString, target), Q_ARG(QString, ctcpparam), Q_ARG(QString, reply_));
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if(ctcptype == CtcpQuery && !reply_.isNull()) {
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replies << lowLevelQuote(pack(serverEncode(ctcpcmd), userEncode(nickFromMask(prefix), reply_)));
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if(ctcptype == CtcpQuery && !replies.isEmpty()) {
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packedReply(nickFromMask(prefix), replies);
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if(!dequotedMessage.isEmpty())
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displayMsg(messageType, target, userDecode(target, dequotedMessage), prefix, flags);
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QByteArray CtcpHandler::pack(const QByteArray &ctcpTag, const QByteArray &message) {
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if(message.isEmpty())
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return XDELIM + ctcpTag + XDELIM;
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return XDELIM + ctcpTag + ' ' + xdelimQuote(message) + XDELIM;
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void CtcpHandler::query(const QString &bufname, const QString &ctcpTag, const QString &message) {
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QList<QByteArray> params;
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params << serverEncode(bufname) << lowLevelQuote(pack(serverEncode(ctcpTag), userEncode(bufname, message)));
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emit putCmd("PRIVMSG", params);
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void CtcpHandler::reply(const QString &bufname, const QString &ctcpTag, const QString &message) {
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QList<QByteArray> params;
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params << serverEncode(bufname) << lowLevelQuote(pack(serverEncode(ctcpTag), userEncode(bufname, message)));
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emit putCmd("NOTICE", params);
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void CtcpHandler::packedReply(const QString &bufname, const QList<QByteArray> &replies) {
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QList<QByteArray> params;
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for(int i = 0; i < replies.count(); i++) {
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answerSize += replies.at(i).size();
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QByteArray quotedReply;
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quotedReply.reserve(answerSize);
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for(int i = 0; i < replies.count(); i++) {
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quotedReply.append(replies.at(i));
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params << serverEncode(bufname) << quotedReply;
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emit putCmd("NOTICE", params);
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//******************************/
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//******************************/
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void CtcpHandler::handleAction(CtcpType ctcptype, const QString &prefix, const QString &target, const QString ¶m, QString &/*reply*/) {
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emit displayMsg(Message::Action, typeByTarget(target), target, param, prefix);
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void CtcpHandler::handleClientinfo(CtcpType ctcptype, const QString &prefix, const QString &target, const QString ¶m, QString &reply) {
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if(ctcptype == CtcpQuery) {
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QStringList supportedHandlers;
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foreach(QString handler, providesHandlers()) {
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supportedHandlers << handler.toUpper();
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reply = supportedHandlers.join(" ");
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emit displayMsg(Message::Server, BufferInfo::StatusBuffer, "", tr("Received CTCP CLIENTINFO request from %1").arg(prefix));
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// display clientinfo answer
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emit displayMsg(Message::Server, BufferInfo::StatusBuffer, "", tr("Received CTCP CLIENTINFO answer from %1: %2")
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.arg(nickFromMask(prefix)).arg(param));
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void CtcpHandler::handlePing(CtcpType ctcptype, const QString &prefix, const QString &target, const QString ¶m, QString &reply) {
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if(ctcptype == CtcpQuery) {
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emit displayMsg(Message::Server, BufferInfo::StatusBuffer, "", tr("Received CTCP PING request from %1").arg(prefix));
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// display ping answer
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uint now = QDateTime::currentDateTime().toTime_t();
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uint then = QDateTime().fromTime_t(param.toInt()).toTime_t();
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emit displayMsg(Message::Server, BufferInfo::StatusBuffer, "", tr("Received CTCP PING answer from %1 with %2 seconds round trip time")
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.arg(nickFromMask(prefix)).arg(now-then));
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void CtcpHandler::handleVersion(CtcpType ctcptype, const QString &prefix, const QString &target, const QString ¶m, QString &reply) {
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if(ctcptype == CtcpQuery) {
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reply = QString("Quassel IRC %1 (built on %2) -- http://www.quassel-irc.org").arg(Quassel::buildInfo().plainVersionString).arg(Quassel::buildInfo().buildDate);
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emit displayMsg(Message::Server, BufferInfo::StatusBuffer, "", tr("Received CTCP VERSION request by %1").arg(prefix));
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// display Version answer
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emit displayMsg(Message::Server, BufferInfo::StatusBuffer, "", tr("Received CTCP VERSION answer from %1: %2")
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.arg(nickFromMask(prefix)).arg(param));
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void CtcpHandler::handleTime(CtcpType ctcptype, const QString &prefix, const QString &target, const QString ¶m, QString &reply) {
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if(ctcptype == CtcpQuery) {
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reply = QDateTime::currentDateTime().toString();
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emit displayMsg(Message::Server, BufferInfo::StatusBuffer, "", tr("Received CTCP TIME request by %1").arg(prefix));
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emit displayMsg(Message::Server, BufferInfo::StatusBuffer, "", tr("Received CTCP TIME answer from %1: %2")
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.arg(nickFromMask(prefix)).arg(param));
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void CtcpHandler::defaultHandler(const QString &cmd, CtcpType ctcptype, const QString &prefix, const QString &target, const QString ¶m, QString &reply) {
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QString str = tr("Received unknown CTCP %1 by %2").arg(cmd).arg(prefix);
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str.append(tr(" with arguments: %1").arg(param));
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emit displayMsg(Message::Error, BufferInfo::StatusBuffer, "", str);