1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
19 #include "inspircd_config.h"
21 #include "configreader.h"
24 #include "connection.h"
27 #include "inspstring.h"
28 #include "helperfuncs.h"
33 #include "modes/cmode_s.h"
35 #include "modes/cmode_p.h"
37 #include "modes/cmode_b.h"
39 #include "modes/cmode_m.h"
40 /* +t (only (half) ops can change topic) */
41 #include "modes/cmode_t.h"
42 /* +n (no external messages) */
43 #include "modes/cmode_n.h"
44 /* +i (invite only) */
45 #include "modes/cmode_i.h"
46 /* +k (keyed channel) */
47 #include "modes/cmode_k.h"
48 /* +l (channel user limit) */
49 #include "modes/cmode_l.h"
51 #include "modes/cmode_o.h"
52 /* +h (channel halfop) */
53 #include "modes/cmode_h.h"
54 /* +v (channel voice) */
55 #include "modes/cmode_v.h"
57 /* +s (server notices) */
58 #include "modes/umode_s.h"
59 /* +w (see wallops) */
60 #include "modes/umode_w.h"
62 #include "modes/umode_i.h"
64 #include "modes/umode_o.h"
65 /* +n (notice mask - our implementation of snomasks) */
66 #include "modes/umode_n.h"
70 ModeHandler::ModeHandler(InspIRCd* Instance, char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly)
71 : ServerInstance(Instance), mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly)
75 ModeHandler::~ModeHandler()
79 bool ModeHandler::IsListMode()
84 ModeType ModeHandler::GetModeType()
89 bool ModeHandler::NeedsOper()
94 int ModeHandler::GetNumParams(bool adding)
96 return adding ? n_params_on : n_params_off;
99 char ModeHandler::GetModeChar()
104 ModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)
106 return MODEACTION_DENY;
109 ModePair ModeHandler::ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter)
113 return std::make_pair(dest->IsModeSet(this->mode), "");
117 return std::make_pair(channel->IsModeSet(this->mode), "");
121 void ModeHandler::DisplayList(userrec* user, chanrec* channel)
125 bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
127 return (ours < theirs);
130 ModeWatcher::ModeWatcher(InspIRCd* Instance, char modeletter, ModeType type) : ServerInstance(Instance), mode(modeletter), m_type(type)
134 ModeWatcher::~ModeWatcher()
138 char ModeWatcher::GetModeChar()
143 ModeType ModeWatcher::GetModeType()
148 bool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding, ModeType type)
153 void ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter, bool adding, ModeType type)
157 userrec* ModeParser::SanityChecks(userrec *user,const char *dest,chanrec *chan,int status)
160 if ((!user) || (!dest) || (!chan) || (!*dest))
164 d = ServerInstance->FindNick(dest);
167 user->WriteServ("401 %s %s :No such nick/channel",user->nick, dest);
173 const char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
178 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
180 ucrec* n = (ucrec*)(*i);
181 if (n->channel == chan)
183 if (n->uc_modes & MASK)
187 n->uc_modes = n->uc_modes | MASK;
191 n->channel->AddOppedUser(d);
194 n->channel->AddHalfoppedUser(d);
197 n->channel->AddVoicedUser(d);
200 log(DEBUG,"grant: %s %s",n->channel->name,d->nick);
207 const char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
212 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
214 ucrec* n = (ucrec*)(*i);
215 if (n->channel == chan)
217 if ((n->uc_modes & MASK) == 0)
225 n->channel->DelOppedUser(d);
228 n->channel->DelHalfoppedUser(d);
231 n->channel->DelVoicedUser(d);
234 log(DEBUG,"revoke: %s %s",n->channel->name,d->nick);
241 void ModeParser::DisplayCurrentModes(userrec *user, userrec* targetuser, chanrec* targetchannel, const char* text)
245 /* Display channel's current mode string */
246 user->WriteServ("324 %s %s +%s",user->nick, targetchannel->name, targetchannel->ChanModes(targetchannel->HasUser(user)));
247 user->WriteServ("329 %s %s %d", user->nick, targetchannel->name, targetchannel->created);
252 /* Display user's current mode string */
253 user->WriteServ("221 %s :+%s",targetuser->nick,targetuser->FormatModes());
254 user->WriteServ("008 %s :+%s", targetuser->nick, targetuser->FormatNoticeMasks());
258 /* No such nick/channel */
259 user->WriteServ("401 %s %s :No such nick/channel",user->nick, text);
263 void ModeParser::Process(const char** parameters, int pcnt, userrec *user, bool servermode)
265 std::string target = parameters[0];
266 ModeType type = MODETYPE_USER;
267 unsigned char mask = 0;
268 chanrec* targetchannel = ServerInstance->FindChan(parameters[0]);
269 userrec* targetuser = ServerInstance->FindNick(parameters[0]);
271 log(DEBUG,"ModeParser::Process start");
273 /* Special case for displaying the list for listmodes,
274 * e.g. MODE #chan b, or MODE #chan +b without a parameter
276 if ((targetchannel) && (pcnt == 2))
278 const char* mode = parameters[1];
281 unsigned char handler_id = ((*mode) - 65) | MASK_CHANNEL;
282 ModeHandler* mh = modehandlers[handler_id];
283 if ((mh) && (mh->IsListMode()))
285 mh->DisplayList(user, targetchannel);
292 this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);
298 type = MODETYPE_CHANNEL;
301 /* Extra security checks on channel modes
302 * (e.g. are they a (half)op?
305 if ((IS_LOCAL(user)) && (targetchannel->GetStatus(user) < STATUS_HOP))
307 /* We don't have halfop */
308 log(DEBUG,"The user is not a halfop or above, checking other reasons for being able to set the modes");
310 /* Are we a uline or is it a servermode? */
311 if ((!is_uline(user->server)) && (!servermode))
313 /* Not enough permission:
314 * NOT a uline and NOT a servermode,
315 * OR, NOT halfop or above.
317 user->WriteServ("482 %s %s :You're not a channel (half)operator",user->nick, targetchannel->name);
324 type = MODETYPE_USER;
329 /* No such nick/channel */
330 user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[0]);
334 std::string mode_sequence = parameters[1];
335 std::string parameter = "";
336 std::ostringstream parameter_list;
337 std::string output_sequence = "";
338 bool adding = true, state_change = false;
339 unsigned char handler_id = 0;
340 int parameter_counter = 2; /* Index of first parameter */
342 for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
344 unsigned char modechar = *letter;
349 * For + and - mode characters, we don't just stick the character into the output sequence.
350 * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
351 * appearing in the output sequence, we store a flag which says there was a state change,
352 * which is set on any + or -, however, the + or - that we finish on is only appended to
353 * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
356 /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
357 * however, will allow the + if it is the first item in the sequence, regardless.
359 if ((!adding) || (!output_sequence.length()))
365 if ((adding) || (!output_sequence.length()))
373 * Watch carefully for the sleight of hand trick.
374 * 65 is the ascii value of 'A'. We take this from
375 * the char we're looking at to get a number between
376 * 1 and 127. We then logic-or it to get the hashed
377 * position, dependent on wether its a channel or
378 * a user mode. This is a little stranger, but a lot
379 * faster, than using a map of pairs.
381 handler_id = (modechar - 65) | mask;
383 if (modehandlers[handler_id])
387 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
389 if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
392 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
394 if (modehandlers[handler_id]->GetNumParams(adding))
396 /* This mode expects a parameter, do we have any parameters left in our list to use? */
397 if (parameter_counter < pcnt)
399 parameter = parameters[parameter_counter++];
403 /* No parameter, continue to the next mode */
408 /* It's an oper only mode, check if theyre an oper. If they arent,
409 * eat any parameter that came with the mode, and continue to next
411 if ((IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!*user->oper))
414 /* Call the handler for the mode */
415 ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
417 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter == ""))
419 /* The handler nuked the parameter and they are supposed to have one.
420 * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
421 * so we bail to the next mode character.
426 if (ma == MODEACTION_ALLOW)
428 /* We're about to output a valid mode letter - was there previously a pending state-change? */
430 output_sequence.append(adding ? "+" : "-");
432 /* Add the mode letter */
433 output_sequence.push_back(modechar);
435 /* Is there a valid parameter for this mode? If so add it to the parameter list */
436 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter != ""))
437 parameter_list << " " << parameter;
439 /* Call all the AfterMode events in the mode watchers for this mode */
440 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
441 (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
443 /* Reset the state change flag */
444 state_change = false;
450 /* No mode handler? Unknown mode character then. */
451 user->WriteServ("472 %s %c :is unknown mode char to me",user->nick, modechar);
456 /* Was there at least one valid mode in the sequence? */
457 if (output_sequence != "")
461 if (type == MODETYPE_CHANNEL)
463 targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s %s%s", targetchannel->name, output_sequence.c_str(), parameter_list.str().c_str());
467 targetuser->WriteServ("MODE %s %s",targetuser->nick,output_sequence.c_str());
472 if (type == MODETYPE_CHANNEL)
474 log(DEBUG,"Write output sequence and parameters to channel: %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
475 targetchannel->WriteChannel(user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
476 FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
480 user->WriteTo(targetuser,"MODE %s %s",targetuser->nick,output_sequence.c_str());
481 FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence));
489 void cmd_mode::Handle (const char** parameters, int pcnt, userrec *user)
494 ServerInstance->ModeGrok->Process(parameters, pcnt, user, false);
499 void ModeParser::CleanMask(std::string &mask)
501 std::string::size_type pos_of_pling = mask.find_first_of('!');
502 std::string::size_type pos_of_at = mask.find_first_of('@');
503 std::string::size_type pos_of_dot = mask.find_first_of('.');
504 std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */
506 if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
508 /* Just a nick, or just a host */
509 if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))
511 /* It has no '.' in it, it must be a nick. */
516 /* Got a dot in it? Has to be a host */
517 mask = "*!*@" + mask;
520 else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
522 /* Has an @ but no !, its a user@host */
525 else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
527 /* Has a ! but no @, it must be a nick!ident */
532 bool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)
534 unsigned char mask = 0;
535 unsigned char pos = 0;
537 /* Yes, i know, this might let people declare modes like '_' or '^'.
538 * If they do that, thats their problem, and if i ever EVER see an
539 * official InspIRCd developer do that, i'll beat them with a paddle!
541 if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z'))
544 mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
545 pos = (mh->GetModeChar()-65) | mask;
547 if (modehandlers[pos])
550 modehandlers[pos] = mh;
551 log(DEBUG,"ModeParser::AddMode: added mode %c",mh->GetModeChar());
555 ModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt)
557 unsigned char mask = 0;
558 unsigned char pos = 0;
560 if ((modeletter < 'A') || (modeletter > 'z'))
563 mt == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
564 pos = (modeletter-65) | mask;
566 return modehandlers[pos];
569 std::string ModeParser::UserModeList()
574 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
576 unsigned char pos = (mode-65) | MASK_USER;
578 if (modehandlers[pos])
579 modestr[pointer++] = mode;
581 modestr[pointer++] = 0;
585 std::string ModeParser::ChannelModeList()
590 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
592 unsigned char pos = (mode-65) | MASK_CHANNEL;
594 if (modehandlers[pos])
595 modestr[pointer++] = mode;
597 modestr[pointer++] = 0;
601 std::string ModeParser::ParaModeList()
606 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
608 unsigned char pos = (mode-65) | MASK_CHANNEL;
610 if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true)))
611 modestr[pointer++] = mode;
613 modestr[pointer++] = 0;
617 bool ModeParser::AddModeWatcher(ModeWatcher* mw)
619 unsigned char mask = 0;
620 unsigned char pos = 0;
625 if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
628 mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
629 pos = (mw->GetModeChar()-65) | mask;
631 modewatchers[pos].push_back(mw);
632 log(DEBUG,"ModeParser::AddModeWatcher: watching mode %c",mw->GetModeChar());
637 bool ModeParser::DelModeWatcher(ModeWatcher* mw)
639 unsigned char mask = 0;
640 unsigned char pos = 0;
645 if ((mw->GetModeType() < 'A') || (mw->GetModeType() > 'z'))
648 mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
649 pos = (mw->GetModeChar()-65) | mask;
651 ModeWatchIter a = find(modewatchers[pos].begin(),modewatchers[pos].end(),mw);
653 if (a == modewatchers[pos].end())
656 modewatchers[pos].erase(a);
657 log(DEBUG,"ModeParser::DelModeWatcher: stopped watching mode %c",mw->GetModeChar());
662 ModeParser::ModeParser(InspIRCd* Instance) : ServerInstance(Instance)
664 /* Clear mode list */
665 memset(modehandlers, 0, sizeof(modehandlers));
666 memset(modewatchers, 0, sizeof(modewatchers));
668 /* Initialise the RFC mode letters */
670 /* Start with channel simple modes, no params */
671 this->AddMode(new ModeChannelSecret(Instance), 's');
672 this->AddMode(new ModeChannelPrivate(Instance), 'p');
673 this->AddMode(new ModeChannelModerated(Instance), 'm');
674 this->AddMode(new ModeChannelTopicOps(Instance), 't');
675 this->AddMode(new ModeChannelNoExternal(Instance), 'n');
676 this->AddMode(new ModeChannelInviteOnly(Instance), 'i');
678 /* Cannel modes with params */
679 this->AddMode(new ModeChannelKey(Instance), 'k');
680 this->AddMode(new ModeChannelLimit(Instance), 'l');
682 /* Channel listmodes */
683 this->AddMode(new ModeChannelBan(Instance), 'b');
684 this->AddMode(new ModeChannelOp(Instance), 'o');
685 this->AddMode(new ModeChannelHalfOp(Instance), 'h');
686 this->AddMode(new ModeChannelVoice(Instance), 'v');
688 /* Now for usermodes */
689 this->AddMode(new ModeUserServerNotice(Instance), 's');
690 this->AddMode(new ModeUserWallops(Instance), 'w');
691 this->AddMode(new ModeUserInvisible(Instance), 'i');
692 this->AddMode(new ModeUserOperator(Instance), 'o');
693 this->AddMode(new ModeUserServerNoticeMask(Instance), 'n');
696 bool ModeParser::InsertMode(std::string &output, const char* mode, unsigned short section)
698 unsigned short currsection = 1;
699 unsigned int pos = output.find("CHANMODES=", 0) + 10; // +10 for the length of "CHANMODES="
701 if(section > 4 || section == 0)
703 log(DEBUG, "InsertMode: CHANMODES doesn't have a section %dh :/", section);
707 for(; pos < output.size(); pos++)
709 if(section == currsection)
712 if(output[pos] == ',')
716 output.insert(pos, mode);