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coreuserinputhandler.cpp
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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 
34  : CoreBasicHandler(parent)
35 {
36 }
37 
38 
39 void CoreUserInputHandler::handleUserInput(const BufferInfo &bufferInfo, const QString &msg)
40 {
41  if (msg.isEmpty())
42  return;
43 
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 // ====================
57 void CoreUserInputHandler::handleAway(const BufferInfo &bufferInfo, const QString &msg)
58 {
59  Q_UNUSED(bufferInfo)
60  if (msg.startsWith("-all")) {
61  if (msg.length() == 4) {
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 
75 void 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 
99 void CoreUserInputHandler::handleBan(const BufferInfo &bufferInfo, const QString &msg)
100 {
101  banOrUnban(bufferInfo, msg, true);
102 }
103 
104 
105 void CoreUserInputHandler::handleUnban(const BufferInfo &bufferInfo, const QString &msg)
106 {
107  banOrUnban(bufferInfo, msg, false);
108 }
109 
110 
111 void 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 
159 void 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  message = QString::number(QDateTime::currentMSecsSinceEpoch());
173  }
174 
175  // FIXME make this a proper event
176  coreNetwork()->coreSession()->ctcpParser()->query(coreNetwork(), nick, ctcpTag, message);
177  emit displayMsg(Message::Action, BufferInfo::StatusBuffer, "", verboseMessage, network()->myNick());
178 }
179 
180 
181 void CoreUserInputHandler::handleDelkey(const BufferInfo &bufferInfo, const QString &msg)
182 {
183  QString bufname = bufferInfo.bufferName().isNull() ? "" : bufferInfo.bufferName();
184 #ifdef HAVE_QCA2
185  if (!bufferInfo.isValid())
186  return;
187 
189  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: QCA provider plugin not found. It is usually provided by the qca-ossl plugin."));
190  return;
191  }
192 
193  QStringList parms = msg.split(' ', QString::SkipEmptyParts);
194 
195  if (parms.isEmpty() && !bufferInfo.bufferName().isEmpty() && bufferInfo.acceptsRegularMessages())
196  parms.prepend(bufferInfo.bufferName());
197 
198  if (parms.isEmpty()) {
199  emit displayMsg(Message::Info, typeByTarget(bufname), bufname,
200  tr("[usage] /delkey <nick|channel> deletes the encryption key for nick or channel or just /delkey when in a channel or query."));
201  return;
202  }
203 
204  QString target = parms.at(0);
205 
206  if (network()->cipherKey(target).isEmpty()) {
207  emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("No key has been set for %1.").arg(target));
208  return;
209  }
210 
211  network()->setCipherKey(target, QByteArray());
212  emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("The key for %1 has been deleted.").arg(target));
213 
214 #else
215  Q_UNUSED(msg)
216  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: Setting an encryption key requires Quassel to have been built "
217  "with support for the Qt Cryptographic Architecture (QCA2) library. "
218  "Contact your distributor about a Quassel package with QCA2 "
219  "support, or rebuild Quassel with QCA2 present."));
220 #endif
221 }
222 
223 void CoreUserInputHandler::doMode(const BufferInfo &bufferInfo, const QChar& addOrRemove, const QChar& mode, const QString &nicks)
224 {
225  QString m;
226  bool isNumber;
227  int maxModes = network()->support("MODES").toInt(&isNumber);
228  if (!isNumber || maxModes == 0) maxModes = 1;
229 
230  QStringList nickList;
231  if (nicks == "*") { // All users in channel
232  const QList<IrcUser*> users = network()->ircChannel(bufferInfo.bufferName())->ircUsers();
233  foreach(IrcUser *user, users) {
234  if ((addOrRemove == '+' && !network()->ircChannel(bufferInfo.bufferName())->userModes(user).contains(mode))
235  || (addOrRemove == '-' && network()->ircChannel(bufferInfo.bufferName())->userModes(user).contains(mode)))
236  nickList.append(user->nick());
237  }
238  } else {
239  nickList = nicks.split(' ', QString::SkipEmptyParts);
240  }
241 
242  if (nickList.count() == 0) return;
243 
244  while (!nickList.isEmpty()) {
245  int amount = qMin(nickList.count(), maxModes);
246  QString m = addOrRemove; for(int i = 0; i < amount; i++) m += mode;
247  QStringList params;
248  params << bufferInfo.bufferName() << m;
249  for(int i = 0; i < amount; i++) params << nickList.takeFirst();
250  emit putCmd("MODE", serverEncode(params));
251  }
252 }
253 
254 
255 void CoreUserInputHandler::handleDeop(const BufferInfo &bufferInfo, const QString &nicks)
256 {
257  doMode(bufferInfo, '-', 'o', nicks);
258 }
259 
260 
261 void CoreUserInputHandler::handleDehalfop(const BufferInfo &bufferInfo, const QString &nicks)
262 {
263  doMode(bufferInfo, '-', 'h', nicks);
264 }
265 
266 
267 void CoreUserInputHandler::handleDevoice(const BufferInfo &bufferInfo, const QString &nicks)
268 {
269  doMode(bufferInfo, '-', 'v', nicks);
270 }
271 
272 void CoreUserInputHandler::handleHalfop(const BufferInfo &bufferInfo, const QString &nicks)
273 {
274  doMode(bufferInfo, '+', 'h', nicks);
275 }
276 
277 void CoreUserInputHandler::handleOp(const BufferInfo &bufferInfo, const QString &nicks) {
278  doMode(bufferInfo, '+', 'o', nicks);
279 }
280 
281 
282 void CoreUserInputHandler::handleInvite(const BufferInfo &bufferInfo, const QString &msg)
283 {
284  QStringList params;
285  params << msg << bufferInfo.bufferName();
286  emit putCmd("INVITE", serverEncode(params));
287 }
288 
289 
290 void CoreUserInputHandler::handleJoin(const BufferInfo &bufferInfo, const QString &msg)
291 {
292  Q_UNUSED(bufferInfo);
293 
294  // trim spaces before chans or keys
295  QString sane_msg = msg;
296  sane_msg.replace(QRegExp(", +"), ",");
297  QStringList params = sane_msg.trimmed().split(" ");
298 
299  QStringList chans = params[0].split(",", QString::SkipEmptyParts);
300  QStringList keys;
301  if (params.count() > 1)
302  keys = params[1].split(",");
303 
304  int i;
305  for (i = 0; i < chans.count(); i++) {
306  if (!network()->isChannelName(chans[i]))
307  chans[i].prepend('#');
308 
309  if (i < keys.count()) {
310  network()->addChannelKey(chans[i], keys[i]);
311  }
312  else {
313  network()->removeChannelKey(chans[i]);
314  }
315  }
316 
317  static const char *cmd = "JOIN";
318  i = 0;
319  QStringList joinChans, joinKeys;
320  int slicesize = chans.count();
321  QList<QByteArray> encodedParams;
322 
323  // go through all to-be-joined channels and (re)build the join list
324  while (i < chans.count()) {
325  joinChans.append(chans.at(i));
326  if (i < keys.count())
327  joinKeys.append(keys.at(i));
328 
329  // if the channel list we built so far either contains all requested channels or exceeds
330  // the desired amount of channels in this slice, try to send what we have so far
331  if (++i == chans.count() || joinChans.count() >= slicesize) {
332  params.clear();
333  params.append(joinChans.join(","));
334  params.append(joinKeys.join(","));
335  encodedParams = serverEncode(params);
336  // check if it fits in one command
337  if (lastParamOverrun(cmd, encodedParams) == 0) {
338  emit putCmd(cmd, encodedParams);
339  }
340  else if (slicesize > 1) {
341  // back to start of slice, try again with half the amount of channels
342  i -= slicesize;
343  slicesize /= 2;
344  }
345  joinChans.clear();
346  joinKeys.clear();
347  }
348  }
349 }
350 
351 
352 void CoreUserInputHandler::handleKeyx(const BufferInfo &bufferInfo, const QString &msg)
353 {
354  QString bufname = bufferInfo.bufferName().isNull() ? "" : bufferInfo.bufferName();
355 #ifdef HAVE_QCA2
356  if (!bufferInfo.isValid())
357  return;
358 
360  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: QCA provider plugin not found. It is usually provided by the qca-ossl plugin."));
361  return;
362  }
363 
364  QStringList parms = msg.split(' ', QString::SkipEmptyParts);
365 
366  if (parms.count() == 0 && !bufferInfo.bufferName().isEmpty() && bufferInfo.acceptsRegularMessages())
367  parms.prepend(bufferInfo.bufferName());
368  else if (parms.count() != 1) {
369  emit displayMsg(Message::Info, typeByTarget(bufname), bufname,
370  tr("[usage] /keyx [<nick>] Initiates a DH1080 key exchange with the target."));
371  return;
372  }
373 
374  QString target = parms.at(0);
375 
376  if (network()->isChannelName(target)) {
377  emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("It is only possible to exchange keys in a query buffer."));
378  return;
379  }
380 
381  Cipher *cipher = network()->cipher(target);
382  if (!cipher) // happens when there is no CoreIrcChannel for the target
383  return;
384 
385  QByteArray pubKey = cipher->initKeyExchange();
386  if (pubKey.isEmpty())
387  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Failed to initiate key exchange with %1.").arg(target));
388  else {
389  QList<QByteArray> params;
390  params << serverEncode(target) << serverEncode("DH1080_INIT ") + pubKey;
391  emit putCmd("NOTICE", params);
392  emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("Initiated key exchange with %1.").arg(target));
393  }
394 #else
395  Q_UNUSED(msg)
396  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: Setting an encryption key requires Quassel to have been built "
397  "with support for the Qt Cryptographic Architecture (QCA) library. "
398  "Contact your distributor about a Quassel package with QCA "
399  "support, or rebuild Quassel with QCA present."));
400 #endif
401 }
402 
403 
404 void CoreUserInputHandler::handleKick(const BufferInfo &bufferInfo, const QString &msg)
405 {
406  QString nick = msg.section(' ', 0, 0, QString::SectionSkipEmpty);
407  QString reason = msg.section(' ', 1, -1, QString::SectionSkipEmpty).trimmed();
408  if (reason.isEmpty())
409  reason = network()->identityPtr()->kickReason();
410 
411  QList<QByteArray> params;
412  params << serverEncode(bufferInfo.bufferName()) << serverEncode(nick) << channelEncode(bufferInfo.bufferName(), reason);
413  emit putCmd("KICK", params);
414 }
415 
416 
417 void CoreUserInputHandler::handleKill(const BufferInfo &bufferInfo, const QString &msg)
418 {
419  Q_UNUSED(bufferInfo)
420  QString nick = msg.section(' ', 0, 0, QString::SectionSkipEmpty);
421  QString pass = msg.section(' ', 1, -1, QString::SectionSkipEmpty);
422  QList<QByteArray> params;
423  params << serverEncode(nick) << serverEncode(pass);
424  emit putCmd("KILL", params);
425 }
426 
427 
428 void CoreUserInputHandler::handleList(const BufferInfo &bufferInfo, const QString &msg)
429 {
430  Q_UNUSED(bufferInfo)
431  emit putCmd("LIST", serverEncode(msg.split(' ', QString::SkipEmptyParts)));
432 }
433 
434 
435 void CoreUserInputHandler::handleMe(const BufferInfo &bufferInfo, const QString &msg)
436 {
437  if (bufferInfo.bufferName().isEmpty() || !bufferInfo.acceptsRegularMessages())
438  return; // server buffer
439  // FIXME make this a proper event
440  coreNetwork()->coreSession()->ctcpParser()->query(coreNetwork(), bufferInfo.bufferName(), "ACTION", msg);
441  emit displayMsg(Message::Action, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
442 }
443 
444 
445 void CoreUserInputHandler::handleMode(const BufferInfo &bufferInfo, const QString &msg)
446 {
447  Q_UNUSED(bufferInfo)
448 
449  QStringList params = msg.split(' ', QString::SkipEmptyParts);
450  // 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
451  if (!params.isEmpty()) {
452  if (!network()->isChannelName(params[0]) && !network()->isMyNick(params[0]))
453  params.prepend(bufferInfo.bufferName());
454  if (network()->isMyNick(params[0]) && params.count() == 2)
455  network()->updateIssuedModes(params[1]);
456  if (params[0] == "-reset" && params.count() == 1) {
457  // FIXME: give feedback to the user (I don't want to add new strings right now)
459  return;
460  }
461  }
462 
463  // TODO handle correct encoding for buffer modes (channelEncode())
464  emit putCmd("MODE", serverEncode(params));
465 }
466 
467 
468 // TODO: show privmsgs
469 void CoreUserInputHandler::handleMsg(const BufferInfo &bufferInfo, const QString &msg)
470 {
471  Q_UNUSED(bufferInfo);
472  if (!msg.contains(' '))
473  return;
474 
475  QString target = msg.section(' ', 0, 0);
476  QString msgSection = msg.section(' ', 1);
477 
478  std::function<QByteArray(const QString &, const QString &)> encodeFunc = [this] (const QString &target, const QString &message) -> QByteArray {
479  return userEncode(target, message);
480  };
481 
482 #ifdef HAVE_QCA2
483  putPrivmsg(target, msgSection, encodeFunc, network()->cipher(target));
484 #else
485  putPrivmsg(target, msgSection, encodeFunc);
486 #endif
487 }
488 
489 
490 void 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 
498 void 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 
510 void 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 
517 void 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 
540 void 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 void CoreUserInputHandler::handlePrint(const BufferInfo &bufferInfo, const QString &msg)
553 {
554  if (bufferInfo.bufferName().isEmpty() || !bufferInfo.acceptsRegularMessages())
555  return; // server buffer
556 
557  QByteArray encMsg = channelEncode(bufferInfo.bufferName(), msg);
558  emit displayMsg(Message::Info, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
559 }
560 
561 
562 // TODO: implement queries
563 void CoreUserInputHandler::handleQuery(const BufferInfo &bufferInfo, const QString &msg)
564 {
565  Q_UNUSED(bufferInfo)
566  QString target = msg.section(' ', 0, 0);
567  QString message = msg.section(' ', 1);
568  if (message.isEmpty())
569  emit displayMsg(Message::Server, BufferInfo::QueryBuffer, target, tr("Starting query with %1").arg(target), network()->myNick(), Message::Self);
570  else
571  emit displayMsg(Message::Plain, BufferInfo::QueryBuffer, target, message, network()->myNick(), Message::Self);
572  handleMsg(bufferInfo, msg);
573 }
574 
575 
576 void CoreUserInputHandler::handleQuit(const BufferInfo &bufferInfo, const QString &msg)
577 {
578  Q_UNUSED(bufferInfo)
579  network()->disconnectFromIrc(true, msg);
580 }
581 
582 
583 void CoreUserInputHandler::issueQuit(const QString &reason)
584 {
585  emit putCmd("QUIT", serverEncode(reason));
586 }
587 
588 
589 void CoreUserInputHandler::handleQuote(const BufferInfo &bufferInfo, const QString &msg)
590 {
591  Q_UNUSED(bufferInfo)
592  emit putRawLine(serverEncode(msg));
593 }
594 
595 
596 void CoreUserInputHandler::handleSay(const BufferInfo &bufferInfo, const QString &msg)
597 {
598  if (bufferInfo.bufferName().isEmpty() || !bufferInfo.acceptsRegularMessages())
599  return; // server buffer
600 
601  std::function<QByteArray(const QString &, const QString &)> encodeFunc = [this] (const QString &target, const QString &message) -> QByteArray {
602  return channelEncode(target, message);
603  };
604 
605 #ifdef HAVE_QCA2
606  putPrivmsg(bufferInfo.bufferName(), msg, encodeFunc, network()->cipher(bufferInfo.bufferName()));
607 #else
608  putPrivmsg(bufferInfo.bufferName(), msg, encodeFunc);
609 #endif
610  emit displayMsg(Message::Plain, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
611 }
612 
613 
614 void CoreUserInputHandler::handleSetkey(const BufferInfo &bufferInfo, const QString &msg)
615 {
616  QString bufname = bufferInfo.bufferName().isNull() ? "" : bufferInfo.bufferName();
617 #ifdef HAVE_QCA2
618  if (!bufferInfo.isValid())
619  return;
620 
622  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: QCA provider plugin not found. It is usually provided by the qca-ossl plugin."));
623  return;
624  }
625 
626  QStringList parms = msg.split(' ', QString::SkipEmptyParts);
627 
628  if (parms.count() == 1 && !bufferInfo.bufferName().isEmpty() && bufferInfo.acceptsRegularMessages())
629  parms.prepend(bufferInfo.bufferName());
630  else if (parms.count() != 2) {
631  emit displayMsg(Message::Info, typeByTarget(bufname), bufname,
632  tr("[usage] /setkey <nick|channel> <key> sets the encryption key for nick or channel. "
633  "/setkey <key> when in a channel or query buffer sets the key for it."));
634  return;
635  }
636 
637  QString target = parms.at(0);
638  QByteArray key = parms.at(1).toLocal8Bit();
639  network()->setCipherKey(target, key);
640 
641  emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("The key for %1 has been set.").arg(target));
642 #else
643  Q_UNUSED(msg)
644  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: Setting an encryption key requires Quassel to have been built "
645  "with support for the Qt Cryptographic Architecture (QCA) library. "
646  "Contact your distributor about a Quassel package with QCA "
647  "support, or rebuild Quassel with QCA present."));
648 #endif
649 }
650 
651 
652 void CoreUserInputHandler::handleShowkey(const BufferInfo &bufferInfo, const QString &msg)
653 {
654  QString bufname = bufferInfo.bufferName().isNull() ? "" : bufferInfo.bufferName();
655 #ifdef HAVE_QCA2
656  if (!bufferInfo.isValid())
657  return;
658 
660  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: QCA provider plugin not found. It is usually provided by the qca-ossl plugin."));
661  return;
662  }
663 
664  QStringList parms = msg.split(' ', QString::SkipEmptyParts);
665 
666  if (parms.isEmpty() && !bufferInfo.bufferName().isEmpty() && bufferInfo.acceptsRegularMessages())
667  parms.prepend(bufferInfo.bufferName());
668 
669  if (parms.isEmpty()) {
670  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."));
671  return;
672  }
673 
674  QString target = parms.at(0);
675  QByteArray key = network()->cipherKey(target);
676 
677  if (key.isEmpty()) {
678  emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("No key has been set for %1.").arg(target));
679  return;
680  }
681 
682  emit displayMsg(Message::Info, typeByTarget(bufname), bufname, tr("The key for %1 is %2:%3").arg(target, network()->cipherUsesCBC(target) ? "CBC" : "ECB", QString(key)));
683 
684 #else
685  Q_UNUSED(msg)
686  emit displayMsg(Message::Error, typeByTarget(bufname), bufname, tr("Error: Setting an encryption key requires Quassel to have been built "
687  "with support for the Qt Cryptographic Architecture (QCA2) library. "
688  "Contact your distributor about a Quassel package with QCA2 "
689  "support, or rebuild Quassel with QCA2 present."));
690 #endif
691 }
692 
693 
694 void CoreUserInputHandler::handleTopic(const BufferInfo &bufferInfo, const QString &msg)
695 {
696  if (bufferInfo.bufferName().isEmpty() || !bufferInfo.acceptsRegularMessages())
697  return;
698 
699  QList<QByteArray> params;
700  params << serverEncode(bufferInfo.bufferName());
701 
702  if (!msg.isEmpty()) {
703 # ifdef HAVE_QCA2
704  params << encrypt(bufferInfo.bufferName(), channelEncode(bufferInfo.bufferName(), msg));
705 # else
706  params << channelEncode(bufferInfo.bufferName(), msg);
707 # endif
708  }
709 
710  emit putCmd("TOPIC", params);
711 }
712 
713 
714 void CoreUserInputHandler::handleVoice(const BufferInfo &bufferInfo, const QString &msg)
715 {
716  QStringList nicks = msg.split(' ', QString::SkipEmptyParts);
717  QString m = "+"; for (int i = 0; i < nicks.count(); i++) m += 'v';
718  QStringList params;
719  params << bufferInfo.bufferName() << m << nicks;
720  emit putCmd("MODE", serverEncode(params));
721 }
722 
723 
724 void CoreUserInputHandler::handleWait(const BufferInfo &bufferInfo, const QString &msg)
725 {
726  int splitPos = msg.indexOf(';');
727  if (splitPos <= 0)
728  return;
729 
730  bool ok;
731  int delay = msg.left(splitPos).trimmed().toInt(&ok);
732  if (!ok)
733  return;
734 
735  delay *= 1000;
736 
737  QString command = msg.mid(splitPos + 1).trimmed();
738  if (command.isEmpty())
739  return;
740 
741  _delayedCommands[startTimer(delay)] = Command(bufferInfo, command);
742 }
743 
744 
745 void CoreUserInputHandler::handleWho(const BufferInfo &bufferInfo, const QString &msg)
746 {
747  Q_UNUSED(bufferInfo)
748  emit putCmd("WHO", serverEncode(msg.split(' ')));
749 }
750 
751 
752 void CoreUserInputHandler::handleWhois(const BufferInfo &bufferInfo, const QString &msg)
753 {
754  Q_UNUSED(bufferInfo)
755  emit putCmd("WHOIS", serverEncode(msg.split(' ')));
756 }
757 
758 
759 void CoreUserInputHandler::handleWhowas(const BufferInfo &bufferInfo, const QString &msg)
760 {
761  Q_UNUSED(bufferInfo)
762  emit putCmd("WHOWAS", serverEncode(msg.split(' ')));
763 }
764 
765 
766 void CoreUserInputHandler::defaultHandler(QString cmd, const BufferInfo &bufferInfo, const QString &msg)
767 {
768  Q_UNUSED(bufferInfo);
769  emit putCmd(serverEncode(cmd.toUpper()), serverEncode(msg.split(" ")));
770 }
771 
772 
773 void CoreUserInputHandler::putPrivmsg(const QString &target, const QString &message, std::function<QByteArray(const QString &, const QString &)> encodeFunc, Cipher *cipher)
774 {
775  Q_UNUSED(cipher);
776  QString cmd("PRIVMSG");
777  QByteArray targetEnc = serverEncode(target);
778 
779  std::function<QList<QByteArray>(QString &)> cmdGenerator = [&] (QString &splitMsg) -> QList<QByteArray> {
780  QByteArray splitMsgEnc = encodeFunc(target, splitMsg);
781 
782 #ifdef HAVE_QCA2
783  if (cipher && !cipher->key().isEmpty() && !splitMsg.isEmpty()) {
784  cipher->encrypt(splitMsgEnc);
785  }
786 #endif
787  return QList<QByteArray>() << targetEnc << splitMsgEnc;
788  };
789 
790  putCmd(cmd, network()->splitMessage(cmd, message, cmdGenerator));
791 }
792 
793 
794 // returns 0 if the message will not be chopped by the irc server or number of chopped bytes if message is too long
795 int CoreUserInputHandler::lastParamOverrun(const QString &cmd, const QList<QByteArray> &params)
796 {
797  // the server will pass our message truncated to 512 bytes including CRLF with the following format:
798  // ":prefix COMMAND param0 param1 :lastparam"
799  // where prefix = "nickname!user@host"
800  // that means that the last message can be as long as:
801  // 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)
802  IrcUser *me = network()->me();
803  int maxLen = 480 - cmd.toLatin1().count(); // educated guess in case we don't know us (yet?)
804 
805  if (me)
806  maxLen = 512 - serverEncode(me->nick()).count() - serverEncode(me->user()).count() - serverEncode(me->host()).count() - cmd.toLatin1().count() - 6;
807 
808  if (!params.isEmpty()) {
809  for (int i = 0; i < params.count() - 1; i++) {
810  maxLen -= (params[i].count() + 1);
811  }
812  maxLen -= 2; // " :" last param separator;
813 
814  if (params.last().count() > maxLen) {
815  return params.last().count() - maxLen;
816  }
817  else {
818  return 0;
819  }
820  }
821  else {
822  return 0;
823  }
824 }
825 
826 
827 #ifdef HAVE_QCA2
828 QByteArray CoreUserInputHandler::encrypt(const QString &target, const QByteArray &message_, bool *didEncrypt) const
829 {
830  if (didEncrypt)
831  *didEncrypt = false;
832 
833  if (message_.isEmpty())
834  return message_;
835 
837  return message_;
838 
839  Cipher *cipher = network()->cipher(target);
840  if (!cipher || cipher->key().isEmpty())
841  return message_;
842 
843  QByteArray message = message_;
844  bool result = cipher->encrypt(message);
845  if (didEncrypt)
846  *didEncrypt = result;
847 
848  return message;
849 }
850 
851 
852 #endif
853 
854 void CoreUserInputHandler::timerEvent(QTimerEvent *event)
855 {
856  if (!_delayedCommands.contains(event->timerId())) {
857  QObject::timerEvent(event);
858  return;
859  }
860  BufferInfo bufferInfo = _delayedCommands[event->timerId()].bufferInfo;
861  QString rawCommand = _delayedCommands[event->timerId()].command;
862  _delayedCommands.remove(event->timerId());
863  event->accept();
864 
865  // the stored command might be the result of an alias expansion, so we need to split it up again
866  QStringList commands = rawCommand.split(QRegExp("; ?"));
867  foreach(QString command, commands) {
868  handleUserInput(bufferInfo, command);
869  }
870 }