1/***************************************************************************
2 * Copyright (C) 2005-2014 by the Quassel Project *
3 * devel@quassel-irc.org *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
20
21#include "coreuserinputhandler.h"
22
23#include "util.h"
24
25#include "ctcpparser.h"
26
27#include <QRegExp>
28
29#ifdef HAVE_QCA2
30# include "cipher.h"
31#endif
32
33CoreUserInputHandler::CoreUserInputHandler(CoreNetwork *parent)
34 : CoreBasicHandler(parent)
35{
36}
37
38
39void CoreUserInputHandler::handleUserInput(const BufferInfo &bufferInfo, const QString &msg)
40{
41 if (msg.isEmpty())
42 return;
43
44 AliasManager::CommandList list = coreSession()->aliasManager().processInput(bufferInfo, msg);
45
46 for (int i = 0; i < list.count(); i++) {
47 QString cmd = list.at(i).second.section(' ', 0, 0).remove(0, 1).toUpper();
48 QString payload = list.at(i).second.section(' ', 1);
49 handle(cmd, Q_ARG(BufferInfo, list.at(i).first), Q_ARG(QString, payload));
50 }
51}
52
53
54// ====================
55// Public Slots
56// ====================
57void CoreUserInputHandler::handleAway(const BufferInfo &bufferInfo, const QString &msg)
58{
59 Q_UNUSED(bufferInfo)
60 if (msg.startsWith("-all")) {
61 if (msg.length() == 4) {
62 coreSession()->globalAway();
63 return;
64 }
65 Q_ASSERT(msg.length() > 4);
66 if (msg[4] == ' ') {
67 coreSession()->globalAway(msg.mid(5));
68 return;
69 }
70 }
71 issueAway(msg);
72}
73
74
75void CoreUserInputHandler::issueAway(const QString &msg, bool autoCheck)
76{
77 QString awayMsg = msg;
78 IrcUser *me = network()->me();
79
80 // if there is no message supplied we have to check if we are already away or not
81 if (autoCheck && msg.isEmpty()) {
82 if (me && !me->isAway()) {
83 Identity *identity = network()->identityPtr();
84 if (identity) {
85 awayMsg = identity->awayReason();
86 }
87 if (awayMsg.isEmpty()) {
88 awayMsg = tr("away");
89 }
90 }
91 }
92 if (me)
93 me->setAwayMessage(awayMsg);
94
95 putCmd("AWAY", serverEncode(awayMsg));
96}
97
98
99void CoreUserInputHandler::handleBan(const BufferInfo &bufferInfo, const QString &msg)
100{
101 banOrUnban(bufferInfo, msg, true);
102}
103
104
105void CoreUserInputHandler::handleUnban(const BufferInfo &bufferInfo, const QString &msg)
106{
107 banOrUnban(bufferInfo, msg, false);
108}
109
110
111void CoreUserInputHandler::banOrUnban(const BufferInfo &bufferInfo, const QString &msg, bool ban)
112{
113 QString banChannel;
114 QString banUser;
115
116 QStringList params = msg.split(" ");
117
118 if (!params.isEmpty() && isChannelName(params[0])) {
119 banChannel = params.takeFirst();
120 }
121 else if (bufferInfo.type() == BufferInfo::ChannelBuffer) {
122 banChannel = bufferInfo.bufferName();
123 }
124 else {
125 emit displayMsg(Message::Error, BufferInfo::StatusBuffer, "", QString("Error: channel unknown in command: /BAN %1").arg(msg));
126 return;
127 }
128
129 if (!params.isEmpty() && !params.contains("!") && network()->ircUser(params[0])) {
130 IrcUser *ircuser = network()->ircUser(params[0]);
131 // generalizedHost changes <nick> to *!ident@*.sld.tld.
132 QString generalizedHost = ircuser->host();
133 if (generalizedHost.isEmpty()) {
134 emit displayMsg(Message::Error, BufferInfo::StatusBuffer, "", QString("Error: host unknown in command: /BAN %1").arg(msg));
135 return;
136 }
137
138 static QRegExp ipAddress("\\d+\\.\\d+\\.\\d+\\.\\d+");
139 if (ipAddress.exactMatch(generalizedHost)) {
140 int lastDotPos = generalizedHost.lastIndexOf('.') + 1;
141 generalizedHost.replace(lastDotPos, generalizedHost.length() - lastDotPos, '*');
142 }
143 else if (generalizedHost.lastIndexOf(".") != -1 && generalizedHost.lastIndexOf(".", generalizedHost.lastIndexOf(".")-1) != -1) {
144 int secondLastPeriodPosition = generalizedHost.lastIndexOf(".", generalizedHost.lastIndexOf(".")-1);
145 generalizedHost.replace(0, secondLastPeriodPosition, "*");
146 }
147 banUser = QString("*!%1@%2").arg(ircuser->user(), generalizedHost);
148 }
149 else {
150 banUser = params.join(" ");
151 }
152
153 QString banMode = ban ? "+b" : "-b";
154 QString banMsg = QString("MODE %1 %2 %3").arg(banChannel, banMode, banUser);
155 emit putRawLine(serverEncode(banMsg));
156}
157
158
159void CoreUserInputHandler::handleCtcp(const BufferInfo &bufferInfo, const QString &msg)
160{
161 Q_UNUSED(bufferInfo)
162
163 QString nick = msg.section(' ', 0, 0);
164 QString ctcpTag = msg.section(' ', 1, 1).toUpper();
165 if (ctcpTag.isEmpty())
166 return;
167
168 QString message = msg.section(' ', 2);
169 QString verboseMessage = tr("sending CTCP-%1 request to %2").arg(ctcpTag).arg(nick);
170
171 if (ctcpTag == "PING") {
172#if QT_VERSION >= 0x040700
173 message = QString::number(QDateTime::currentMSecsSinceEpoch());
174#else
175 message = QString::number(QDateTime::currentDateTime().toTime_t());
176#endif
177 }
178
179 // FIXME make this a proper event
180 coreNetwork()->coreSession()->ctcpParser()->query(coreNetwork(), nick, ctcpTag, message);
181 emit displayMsg(Message::Action, BufferInfo::StatusBuffer, "", verboseMessage, network()->myNick());
182}
183
184
185void CoreUserInputHandler::handleDelkey(const BufferInfo &bufferInfo, const QString &msg)
186{
187 QString bufname = bufferInfo.bufferName().isNull() ? "" : bufferInfo.bufferName();
188#ifdef HAVE_QCA2
189 if (!bufferInfo.isValid())
190 return;
191
192 if (!Cipher::neededFeaturesAvailable()) {
193 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: QCA provider plugin not found. It is usually provided by the qca-ossl plugin."));
194 return;
195 }
196
197 QStringList parms = msg.split(' ', QString::SkipEmptyParts);
198
199 if (parms.isEmpty() && !bufferInfo.bufferName().isEmpty() && bufferInfo.acceptsRegularMessages())
200 parms.prepend(bufferInfo.bufferName());
201
202 if (parms.isEmpty()) {
203 emit displayMsg(Message::Info, typeByTarget(bufname), bufname,
204 tr("[usage] /delkey <nick|channel> deletes the encryption key for nick or channel or just /delkey when in a channel or query."));
205 return;
206 }
207
208 QString target = parms.at(0);
209
210 if (network()->cipherKey(target).isEmpty()) {
211 emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("No key has been set for %1.").arg(target));
212 return;
213 }
214
215 network()->setCipherKey(target, QByteArray());
216 emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("The key for %1 has been deleted.").arg(target));
217
218#else
219 Q_UNUSED(msg)
220 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: Setting an encryption key requires Quassel to have been built "
221 "with support for the Qt Cryptographic Architecture (QCA2) library. "
222 "Contact your distributor about a Quassel package with QCA2 "
223 "support, or rebuild Quassel with QCA2 present."));
224#endif
225}
226
227void CoreUserInputHandler::doMode(const BufferInfo &bufferInfo, const QChar& addOrRemove, const QChar& mode, const QString &nicks)
228{
229 QString m;
230 bool isNumber;
231 int maxModes = network()->support("MODES").toInt(&isNumber);
232 if (!isNumber || maxModes == 0) maxModes = 1;
233
234 QStringList nickList;
235 if (nicks == "*") { // All users in channel
236 const QList<IrcUser*> users = network()->ircChannel(bufferInfo.bufferName())->ircUsers();
237 foreach(IrcUser *user, users) {
238 if ((addOrRemove == '+' && !network()->ircChannel(bufferInfo.bufferName())->userModes(user).contains(mode))
239 || (addOrRemove == '-' && network()->ircChannel(bufferInfo.bufferName())->userModes(user).contains(mode)))
240 nickList.append(user->nick());
241 }
242 } else {
243 nickList = nicks.split(' ', QString::SkipEmptyParts);
244 }
245
246 if (nickList.count() == 0) return;
247
248 while (!nickList.isEmpty()) {
249 int amount = qMin(nickList.count(), maxModes);
250 QString m = addOrRemove; for(int i = 0; i < amount; i++) m += mode;
251 QStringList params;
252 params << bufferInfo.bufferName() << m;
253 for(int i = 0; i < amount; i++) params << nickList.takeFirst();
254 emit putCmd("MODE", serverEncode(params));
255 }
256}
257
258
259void CoreUserInputHandler::handleDeop(const BufferInfo &bufferInfo, const QString &nicks)
260{
261 doMode(bufferInfo, '-', 'o', nicks);
262}
263
264
265void CoreUserInputHandler::handleDehalfop(const BufferInfo &bufferInfo, const QString &nicks)
266{
267 doMode(bufferInfo, '-', 'h', nicks);
268}
269
270
271void CoreUserInputHandler::handleDevoice(const BufferInfo &bufferInfo, const QString &nicks)
272{
273 doMode(bufferInfo, '-', 'v', nicks);
274}
275
276void CoreUserInputHandler::handleHalfop(const BufferInfo &bufferInfo, const QString &nicks)
277{
278 doMode(bufferInfo, '+', 'h', nicks);
279}
280
281void CoreUserInputHandler::handleOp(const BufferInfo &bufferInfo, const QString &nicks) {
282 doMode(bufferInfo, '+', 'o', nicks);
283}
284
285
286void CoreUserInputHandler::handleInvite(const BufferInfo &bufferInfo, const QString &msg)
287{
288 QStringList params;
289 params << msg << bufferInfo.bufferName();
290 emit putCmd("INVITE", serverEncode(params));
291}
292
293
294void CoreUserInputHandler::handleJoin(const BufferInfo &bufferInfo, const QString &msg)
295{
296 Q_UNUSED(bufferInfo);
297
298 // trim spaces before chans or keys
299 QString sane_msg = msg;
300 sane_msg.replace(QRegExp(", +"), ",");
301 QStringList params = sane_msg.trimmed().split(" ");
302
303 QStringList chans = params[0].split(",", QString::SkipEmptyParts);
304 QStringList keys;
305 if (params.count() > 1)
306 keys = params[1].split(",");
307
308 int i;
309 for (i = 0; i < chans.count(); i++) {
310 if (!network()->isChannelName(chans[i]))
311 chans[i].prepend('#');
312
313 if (i < keys.count()) {
314 network()->addChannelKey(chans[i], keys[i]);
315 }
316 else {
317 network()->removeChannelKey(chans[i]);
318 }
319 }
320
321 static const char *cmd = "JOIN";
322 i = 0;
323 QStringList joinChans, joinKeys;
324 int slicesize = chans.count();
325 QList<QByteArray> encodedParams;
326
327 // go through all to-be-joined channels and (re)build the join list
328 while (i < chans.count()) {
329 joinChans.append(chans.at(i));
330 if (i < keys.count())
331 joinKeys.append(keys.at(i));
332
333 // if the channel list we built so far either contains all requested channels or exceeds
334 // the desired amount of channels in this slice, try to send what we have so far
335 if (++i == chans.count() || joinChans.count() >= slicesize) {
336 params.clear();
337 params.append(joinChans.join(","));
338 params.append(joinKeys.join(","));
339 encodedParams = serverEncode(params);
340 // check if it fits in one command
341 if (lastParamOverrun(cmd, encodedParams) == 0) {
342 emit putCmd(cmd, encodedParams);
343 }
344 else if (slicesize > 1) {
345 // back to start of slice, try again with half the amount of channels
346 i -= slicesize;
347 slicesize /= 2;
348 }
349 joinChans.clear();
350 joinKeys.clear();
351 }
352 }
353}
354
355
356void CoreUserInputHandler::handleKeyx(const BufferInfo &bufferInfo, const QString &msg)
357{
358 QString bufname = bufferInfo.bufferName().isNull() ? "" : bufferInfo.bufferName();
359#ifdef HAVE_QCA2
360 if (!bufferInfo.isValid())
361 return;
362
363 if (!Cipher::neededFeaturesAvailable()) {
364 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: QCA provider plugin not found. It is usually provided by the qca-ossl plugin."));
365 return;
366 }
367
368 QStringList parms = msg.split(' ', QString::SkipEmptyParts);
369
370 if (parms.count() == 0 && !bufferInfo.bufferName().isEmpty() && bufferInfo.acceptsRegularMessages())
371 parms.prepend(bufferInfo.bufferName());
372 else if (parms.count() != 1) {
373 emit displayMsg(Message::Info, typeByTarget(bufname), bufname,
374 tr("[usage] /keyx [<nick>] Initiates a DH1080 key exchange with the target."));
375 return;
376 }
377
378 QString target = parms.at(0);
379
380 if (network()->isChannelName(target)) {
381 emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("It is only possible to exchange keys in a query buffer."));
382 return;
383 }
384
385 Cipher *cipher = network()->cipher(target);
386 if (!cipher) // happens when there is no CoreIrcChannel for the target
387 return;
388
389 QByteArray pubKey = cipher->initKeyExchange();
390 if (pubKey.isEmpty())
391 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Failed to initiate key exchange with %1.").arg(target));
392 else {
393 QList<QByteArray> params;
394 params << serverEncode(target) << serverEncode("DH1080_INIT ") + pubKey;
395 emit putCmd("NOTICE", params);
396 emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("Initiated key exchange with %1.").arg(target));
397 }
398#else
399 Q_UNUSED(msg)
400 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: Setting an encryption key requires Quassel to have been built "
401 "with support for the Qt Cryptographic Architecture (QCA) library. "
402 "Contact your distributor about a Quassel package with QCA "
403 "support, or rebuild Quassel with QCA present."));
404#endif
405}
406
407
408void CoreUserInputHandler::handleKick(const BufferInfo &bufferInfo, const QString &msg)
409{
410 QString nick = msg.section(' ', 0, 0, QString::SectionSkipEmpty);
411 QString reason = msg.section(' ', 1, -1, QString::SectionSkipEmpty).trimmed();
412 if (reason.isEmpty())
413 reason = network()->identityPtr()->kickReason();
414
415 QList<QByteArray> params;
416 params << serverEncode(bufferInfo.bufferName()) << serverEncode(nick) << channelEncode(bufferInfo.bufferName(), reason);
417 emit putCmd("KICK", params);
418}
419
420
421void CoreUserInputHandler::handleKill(const BufferInfo &bufferInfo, const QString &msg)
422{
423 Q_UNUSED(bufferInfo)
424 QString nick = msg.section(' ', 0, 0, QString::SectionSkipEmpty);
425 QString pass = msg.section(' ', 1, -1, QString::SectionSkipEmpty);
426 QList<QByteArray> params;
427 params << serverEncode(nick) << serverEncode(pass);
428 emit putCmd("KILL", params);
429}
430
431
432void CoreUserInputHandler::handleList(const BufferInfo &bufferInfo, const QString &msg)
433{
434 Q_UNUSED(bufferInfo)
435 emit putCmd("LIST", serverEncode(msg.split(' ', QString::SkipEmptyParts)));
436}
437
438
439void CoreUserInputHandler::handleMe(const BufferInfo &bufferInfo, const QString &msg)
440{
441 if (bufferInfo.bufferName().isEmpty() || !bufferInfo.acceptsRegularMessages())
442 return; // server buffer
443 // FIXME make this a proper event
444 coreNetwork()->coreSession()->ctcpParser()->query(coreNetwork(), bufferInfo.bufferName(), "ACTION", msg);
445 emit displayMsg(Message::Action, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
446}
447
448
449void CoreUserInputHandler::handleMode(const BufferInfo &bufferInfo, const QString &msg)
450{
451 Q_UNUSED(bufferInfo)
452
453 QStringList params = msg.split(' ', QString::SkipEmptyParts);
454 // 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
455 if (!params.isEmpty()) {
456 if (!network()->isChannelName(params[0]) && !network()->isMyNick(params[0]))
457 params.prepend(bufferInfo.bufferName());
458 if (network()->isMyNick(params[0]) && params.count() == 2)
459 network()->updateIssuedModes(params[1]);
460 if (params[0] == "-reset" && params.count() == 1) {
461 // FIXME: give feedback to the user (I don't want to add new strings right now)
462 network()->resetPersistentModes();
463 return;
464 }
465 }
466
467 // TODO handle correct encoding for buffer modes (channelEncode())
468 emit putCmd("MODE", serverEncode(params));
469}
470
471
472// TODO: show privmsgs
473void CoreUserInputHandler::handleMsg(const BufferInfo &bufferInfo, const QString &msg)
474{
475 Q_UNUSED(bufferInfo);
476 if (!msg.contains(' '))
477 return;
478
479 QString target = msg.section(' ', 0, 0);
480 QByteArray encMsg = userEncode(target, msg.section(' ', 1));
481
482#ifdef HAVE_QCA2
483 putPrivmsg(serverEncode(target), encMsg, network()->cipher(target));
484#else
485 putPrivmsg(serverEncode(target), encMsg);
486#endif
487}
488
489
490void CoreUserInputHandler::handleNick(const BufferInfo &bufferInfo, const QString &msg)
491{
492 Q_UNUSED(bufferInfo)
493 QString nick = msg.section(' ', 0, 0);
494 emit putCmd("NICK", serverEncode(nick));
495}
496
497
498void CoreUserInputHandler::handleNotice(const BufferInfo &bufferInfo, const QString &msg)
499{
500 QString bufferName = msg.section(' ', 0, 0);
501 QString payload = msg.section(' ', 1);
502 QList<QByteArray> params;
503 params << serverEncode(bufferName) << channelEncode(bufferInfo.bufferName(), payload);
504 emit putCmd("NOTICE", params);
505 emit displayMsg(Message::Notice, typeByTarget(bufferName), bufferName, payload, network()->myNick(), Message::Self);
506}
507
508
509
510void CoreUserInputHandler::handleOper(const BufferInfo &bufferInfo, const QString &msg)
511{
512 Q_UNUSED(bufferInfo)
513 emit putRawLine(serverEncode(QString("OPER %1").arg(msg)));
514}
515
516
517void CoreUserInputHandler::handlePart(const BufferInfo &bufferInfo, const QString &msg)
518{
519 QList<QByteArray> params;
520 QString partReason;
521
522 // msg might contain either a channel name and/or a reaon, so we have to check if the first word is a known channel
523 QString channelName = msg.section(' ', 0, 0);
524 if (channelName.isEmpty() || !network()->ircChannel(channelName)) {
525 channelName = bufferInfo.bufferName();
526 partReason = msg;
527 }
528 else {
529 partReason = msg.mid(channelName.length() + 1);
530 }
531
532 if (partReason.isEmpty())
533 partReason = network()->identityPtr()->partReason();
534
535 params << serverEncode(channelName) << channelEncode(bufferInfo.bufferName(), partReason);
536 emit putCmd("PART", params);
537}
538
539
540void CoreUserInputHandler::handlePing(const BufferInfo &bufferInfo, const QString &msg)
541{
542 Q_UNUSED(bufferInfo)
543
544 QString param = msg;
545 if (param.isEmpty())
546 param = QTime::currentTime().toString("hh:mm:ss.zzz");
547
548 putCmd("PING", serverEncode(param));
549}
550
551
552// TODO: implement queries
553void CoreUserInputHandler::handleQuery(const BufferInfo &bufferInfo, const QString &msg)
554{
555 Q_UNUSED(bufferInfo)
556 QString target = msg.section(' ', 0, 0);
557 QString message = msg.section(' ', 1);
558 if (message.isEmpty())
559 emit displayMsg(Message::Server, BufferInfo::QueryBuffer, target, tr("Starting query with %1").arg(target), network()->myNick(), Message::Self);
560 else
561 emit displayMsg(Message::Plain, BufferInfo::QueryBuffer, target, message, network()->myNick(), Message::Self);
562 handleMsg(bufferInfo, msg);
563}
564
565
566void CoreUserInputHandler::handleQuit(const BufferInfo &bufferInfo, const QString &msg)
567{
568 Q_UNUSED(bufferInfo)
569 network()->disconnectFromIrc(true, msg);
570}
571
572
573void CoreUserInputHandler::issueQuit(const QString &reason)
574{
575 emit putCmd("QUIT", serverEncode(reason));
576}
577
578
579void CoreUserInputHandler::handleQuote(const BufferInfo &bufferInfo, const QString &msg)
580{
581 Q_UNUSED(bufferInfo)
582 emit putRawLine(serverEncode(msg));
583}
584
585
586void CoreUserInputHandler::handleSay(const BufferInfo &bufferInfo, const QString &msg)
587{
588 if (bufferInfo.bufferName().isEmpty() || !bufferInfo.acceptsRegularMessages())
589 return; // server buffer
590
591 QByteArray encMsg = channelEncode(bufferInfo.bufferName(), msg);
592#ifdef HAVE_QCA2
593 putPrivmsg(serverEncode(bufferInfo.bufferName()), encMsg, network()->cipher(bufferInfo.bufferName()));
594#else
595 putPrivmsg(serverEncode(bufferInfo.bufferName()), encMsg);
596#endif
597 emit displayMsg(Message::Plain, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
598}
599
600
601void CoreUserInputHandler::handleSetkey(const BufferInfo &bufferInfo, const QString &msg)
602{
603 QString bufname = bufferInfo.bufferName().isNull() ? "" : bufferInfo.bufferName();
604#ifdef HAVE_QCA2
605 if (!bufferInfo.isValid())
606 return;
607
608 if (!Cipher::neededFeaturesAvailable()) {
609 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: QCA provider plugin not found. It is usually provided by the qca-ossl plugin."));
610 return;
611 }
612
613 QStringList parms = msg.split(' ', QString::SkipEmptyParts);
614
615 if (parms.count() == 1 && !bufferInfo.bufferName().isEmpty() && bufferInfo.acceptsRegularMessages())
616 parms.prepend(bufferInfo.bufferName());
617 else if (parms.count() != 2) {
618 emit displayMsg(Message::Info, typeByTarget(bufname), bufname,
619 tr("[usage] /setkey <nick|channel> <key> sets the encryption key for nick or channel. "
620 "/setkey <key> when in a channel or query buffer sets the key for it."));
621 return;
622 }
623
624 QString target = parms.at(0);
625 QByteArray key = parms.at(1).toLocal8Bit();
626 network()->setCipherKey(target, key);
627
628 emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("The key for %1 has been set.").arg(target));
629#else
630 Q_UNUSED(msg)
631 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: Setting an encryption key requires Quassel to have been built "
632 "with support for the Qt Cryptographic Architecture (QCA) library. "
633 "Contact your distributor about a Quassel package with QCA "
634 "support, or rebuild Quassel with QCA present."));
635#endif
636}
637
638
639void CoreUserInputHandler::handleShowkey(const BufferInfo &bufferInfo, const QString &msg)
640{
641 QString bufname = bufferInfo.bufferName().isNull() ? "" : bufferInfo.bufferName();
642#ifdef HAVE_QCA2
643 if (!bufferInfo.isValid())
644 return;
645
646 if (!Cipher::neededFeaturesAvailable()) {
647 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: QCA provider plugin not found. It is usually provided by the qca-ossl plugin."));
648 return;
649 }
650
651 QStringList parms = msg.split(' ', QString::SkipEmptyParts);
652
653 if (parms.isEmpty() && !bufferInfo.bufferName().isEmpty() && bufferInfo.acceptsRegularMessages())
654 parms.prepend(bufferInfo.bufferName());
655
656 if (parms.isEmpty()) {
657 emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("[usage] /showkey <nick|channel> shows the encryption key for nick or channel or just /showkey when in a channel or query."));
658 return;
659 }
660
661 QString target = parms.at(0);
662 QByteArray key = network()->cipherKey(target);
663
664 if (key.isEmpty()) {
665 emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("No key has been set for %1.").arg(target));
666 return;
667 }
668
669 emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("The key for %1 is %2:%3").arg(target, network()->cipherUsesCBC(target) ? "CBC" : "ECB", QString(key)));
670
671#else
672 Q_UNUSED(msg)
673 emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: Setting an encryption key requires Quassel to have been built "
674 "with support for the Qt Cryptographic Architecture (QCA2) library. "
675 "Contact your distributor about a Quassel package with QCA2 "
676 "support, or rebuild Quassel with QCA2 present."));
677#endif
678}
679
680
681void CoreUserInputHandler::handleTopic(const BufferInfo &bufferInfo, const QString &msg)
682{
683 if (bufferInfo.bufferName().isEmpty() || !bufferInfo.acceptsRegularMessages())
684 return;
685
686 QList<QByteArray> params;
687 params << serverEncode(bufferInfo.bufferName());
688
689 if (!msg.isEmpty()) {
690# ifdef HAVE_QCA2
691 params << encrypt(bufferInfo.bufferName(), channelEncode(bufferInfo.bufferName(), msg));
692# else
693 params << channelEncode(bufferInfo.bufferName(), msg);
694# endif
695 }
696
697 emit putCmd("TOPIC", params);
698}
699
700
701void CoreUserInputHandler::handleVoice(const BufferInfo &bufferInfo, const QString &msg)
702{
703 QStringList nicks = msg.split(' ', QString::SkipEmptyParts);
704 QString m = "+"; for (int i = 0; i < nicks.count(); i++) m += 'v';
705 QStringList params;
706 params << bufferInfo.bufferName() << m << nicks;
707 emit putCmd("MODE", serverEncode(params));
708}
709
710
711void CoreUserInputHandler::handleWait(const BufferInfo &bufferInfo, const QString &msg)
712{
713 int splitPos = msg.indexOf(';');
714 if (splitPos <= 0)
715 return;
716
717 bool ok;
718 int delay = msg.left(splitPos).trimmed().toInt(&ok);
719 if (!ok)
720 return;
721
722 delay *= 1000;
723
724 QString command = msg.mid(splitPos + 1).trimmed();
725 if (command.isEmpty())
726 return;
727
728 _delayedCommands[startTimer(delay)] = Command(bufferInfo, command);
729}
730
731
732void CoreUserInputHandler::handleWho(const BufferInfo &bufferInfo, const QString &msg)
733{
734 Q_UNUSED(bufferInfo)
735 emit putCmd("WHO", serverEncode(msg.split(' ')));
736}
737
738
739void CoreUserInputHandler::handleWhois(const BufferInfo &bufferInfo, const QString &msg)
740{
741 Q_UNUSED(bufferInfo)
742 emit putCmd("WHOIS", serverEncode(msg.split(' ')));
743}
744
745
746void CoreUserInputHandler::handleWhowas(const BufferInfo &bufferInfo, const QString &msg)
747{
748 Q_UNUSED(bufferInfo)
749 emit putCmd("WHOWAS", serverEncode(msg.split(' ')));
750}
751
752
753void CoreUserInputHandler::defaultHandler(QString cmd, const BufferInfo &bufferInfo, const QString &msg)
754{
755 Q_UNUSED(bufferInfo);
756 emit putCmd(serverEncode(cmd.toUpper()), serverEncode(msg.split(" ")));
757}
758
759
760void CoreUserInputHandler::putPrivmsg(const QByteArray &target, const QByteArray &message, Cipher *cipher)
761{
762 // Encrypted messages need special care. There's no clear relation between cleartext and encrypted message length,
763 // so we can't just compute the maxSplitPos. Instead, we need to loop through the splitpoints until the crypted
764 // version is short enough...
765 // TODO: check out how the various possible encryption methods behave length-wise and make
766 // this clean by predicting the length of the crypted msg.
767 // For example, blowfish-ebc seems to create 8-char chunks.
768
769 static const char *cmd = "PRIVMSG";
770 static const char *splitter = " .,-";
771
772 int maxSplitPos = message.count();
773 int splitPos = maxSplitPos;
774 forever {
775 QByteArray crypted = message.left(splitPos);
776 bool isEncrypted = false;
777#ifdef HAVE_QCA2
778 if (cipher && !cipher->key().isEmpty() && !message.isEmpty()) {
779 isEncrypted = cipher->encrypt(crypted);
780 }
781#endif
782 int overrun = lastParamOverrun(cmd, QList<QByteArray>() << target << crypted);
783 if (overrun) {
784 // In case this is not an encrypted msg, we can just cut off at the end
785 if (!isEncrypted)
786 maxSplitPos = message.count() - overrun;
787
788 splitPos = -1;
789 for (const char *splitChar = splitter; *splitChar != 0; splitChar++) {
790 splitPos = qMax(splitPos, message.lastIndexOf(*splitChar, maxSplitPos) + 1); // keep split char on old line
791 }
792 if (splitPos <= 0 || splitPos > maxSplitPos)
793 splitPos = maxSplitPos;
794
795 maxSplitPos = splitPos - 1;
796 if (maxSplitPos <= 0) { // this should never happen, but who knows...
797 qWarning() << tr("[Error] Could not encrypt your message: %1").arg(message.data());
798 return;
799 }
800 continue; // we never come back here for !encrypted!
801 }
802
803 // now we have found a valid splitpos (or didn't need to split to begin with)
804 putCmd(cmd, QList<QByteArray>() << target << crypted);
805 if (splitPos < message.count())
806 putPrivmsg(target, message.mid(splitPos), cipher);
807
808 return;
809 }
810}
811
812
813// returns 0 if the message will not be chopped by the irc server or number of chopped bytes if message is too long
814int CoreUserInputHandler::lastParamOverrun(const QString &cmd, const QList<QByteArray> &params)
815{
816 // the server will pass our message truncated to 512 bytes including CRLF with the following format:
817 // ":prefix COMMAND param0 param1 :lastparam"
818 // where prefix = "nickname!user@host"
819 // that means that the last message can be as long as:
820 // 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)
821 IrcUser *me = network()->me();
822 int maxLen = 480 - cmd.toLatin1().count(); // educated guess in case we don't know us (yet?)
823
824 if (me)
825 maxLen = 512 - serverEncode(me->nick()).count() - serverEncode(me->user()).count() - serverEncode(me->host()).count() - cmd.toLatin1().count() - 6;
826
827 if (!params.isEmpty()) {
828 for (int i = 0; i < params.count() - 1; i++) {
829 maxLen -= (params[i].count() + 1);
830 }
831 maxLen -= 2; // " :" last param separator;
832
833 if (params.last().count() > maxLen) {
834 return params.last().count() - maxLen;
835 }
836 else {
837 return 0;
838 }
839 }
840 else {
841 return 0;
842 }
843}
844
845
846#ifdef HAVE_QCA2
847QByteArray CoreUserInputHandler::encrypt(const QString &target, const QByteArray &message_, bool *didEncrypt) const
848{
849 if (didEncrypt)
850 *didEncrypt = false;
851
852 if (message_.isEmpty())
853 return message_;
854
855 if (!Cipher::neededFeaturesAvailable())
856 return message_;
857
858 Cipher *cipher = network()->cipher(target);
859 if (!cipher || cipher->key().isEmpty())
860 return message_;
861
862 QByteArray message = message_;
863 bool result = cipher->encrypt(message);
864 if (didEncrypt)
865 *didEncrypt = result;
866
867 return message;
868}
869
870
871#endif
872
873void CoreUserInputHandler::timerEvent(QTimerEvent *event)
874{
875 if (!_delayedCommands.contains(event->timerId())) {
876 QObject::timerEvent(event);
877 return;
878 }
879 BufferInfo bufferInfo = _delayedCommands[event->timerId()].bufferInfo;
880 QString rawCommand = _delayedCommands[event->timerId()].command;
881 _delayedCommands.remove(event->timerId());
882 event->accept();
883
884 // the stored command might be the result of an alias expansion, so we need to split it up again
885 QStringList commands = rawCommand.split(QRegExp("; ?"));
886 foreach(QString command, commands) {
887 handleUserInput(bufferInfo, command);
888 }
889}
890