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 * ---------------------------------------------------
22 #include "inspstring.h"
26 #include "modes/cmode_s.h"
28 #include "modes/cmode_p.h"
30 #include "modes/cmode_b.h"
32 #include "modes/cmode_m.h"
33 /* +t (only (half) ops can change topic) */
34 #include "modes/cmode_t.h"
35 /* +n (no external messages) */
36 #include "modes/cmode_n.h"
37 /* +i (invite only) */
38 #include "modes/cmode_i.h"
39 /* +k (keyed channel) */
40 #include "modes/cmode_k.h"
41 /* +l (channel user limit) */
42 #include "modes/cmode_l.h"
44 #include "modes/cmode_o.h"
45 /* +h (channel halfop) */
46 #include "modes/cmode_h.h"
47 /* +v (channel voice) */
48 #include "modes/cmode_v.h"
49 /* +s (server notices) */
50 #include "modes/umode_s.h"
51 /* +w (see wallops) */
52 #include "modes/umode_w.h"
54 #include "modes/umode_i.h"
56 #include "modes/umode_o.h"
57 /* +n (notice mask - our implementation of snomasks) */
58 #include "modes/umode_n.h"
60 ModeHandler::ModeHandler(InspIRCd* Instance, char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly, char mprefix)
61 : ServerInstance(Instance), mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly), prefix(mprefix)
65 ModeHandler::~ModeHandler()
69 bool ModeHandler::IsListMode()
74 unsigned int ModeHandler::GetPrefixRank()
79 ModeType ModeHandler::GetModeType()
84 bool ModeHandler::NeedsOper()
89 char ModeHandler::GetPrefix()
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 ServerInstance->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 ServerInstance->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 if (*targetuser->oper)
255 user->WriteServ("008 %s +%s :Server notice mask", targetuser->nick, targetuser->FormatNoticeMasks());
259 /* No such nick/channel */
260 user->WriteServ("401 %s %s :No such nick/channel",user->nick, text);
264 void ModeParser::Process(const char** parameters, int pcnt, userrec *user, bool servermode)
266 std::string target = parameters[0];
267 ModeType type = MODETYPE_USER;
268 unsigned char mask = 0;
269 chanrec* targetchannel = ServerInstance->FindChan(parameters[0]);
270 userrec* targetuser = ServerInstance->FindNick(parameters[0]);
272 ServerInstance->Log(DEBUG,"ModeParser::Process start");
274 /* Special case for displaying the list for listmodes,
275 * e.g. MODE #chan b, or MODE #chan +b without a parameter
277 if ((targetchannel) && (pcnt == 2))
279 ServerInstance->Log(DEBUG,"Spool list");
280 const char* mode = parameters[1];
283 unsigned char handler_id = ((*mode) - 65) | MASK_CHANNEL;
284 ModeHandler* mh = modehandlers[handler_id];
285 if ((mh) && (mh->IsListMode()))
287 mh->DisplayList(user, targetchannel);
294 ServerInstance->Log(DEBUG,"Mode list request");
295 this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);
299 ServerInstance->Log(DEBUG,"More than one parameter");
303 type = MODETYPE_CHANNEL;
306 /* Extra security checks on channel modes
307 * (e.g. are they a (half)op?
310 if ((IS_LOCAL(user)) && (targetchannel->GetStatus(user) < STATUS_HOP))
312 /* We don't have halfop */
313 ServerInstance->Log(DEBUG,"The user is not a halfop or above, checking other reasons for being able to set the modes");
315 /* Are we a uline or is it a servermode? */
316 if ((!ServerInstance->ULine(user->server)) && (!servermode))
318 /* Not enough permission:
319 * NOT a uline and NOT a servermode,
320 * OR, NOT halfop or above.
322 user->WriteServ("482 %s %s :You're not a channel (half)operator",user->nick, targetchannel->name);
329 type = MODETYPE_USER;
334 /* No such nick/channel */
335 user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[0]);
339 std::string mode_sequence = parameters[1];
340 std::string parameter = "";
341 std::ostringstream parameter_list;
342 std::string output_sequence = "";
343 bool adding = true, state_change = false;
344 unsigned char handler_id = 0;
345 int parameter_counter = 2; /* Index of first parameter */
347 /* A mode sequence that doesnt start with + or -. Assume +. - Thanks for the suggestion spike (bug#132) */
348 if ((*mode_sequence.begin() != '+') && (*mode_sequence.begin() != '-'))
349 mode_sequence.insert(0, "+");
351 for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
353 unsigned char modechar = *letter;
355 ServerInstance->Log(DEBUG,"Process letter %c", modechar);
360 * For + and - mode characters, we don't just stick the character into the output sequence.
361 * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
362 * appearing in the output sequence, we store a flag which says there was a state change,
363 * which is set on any + or -, however, the + or - that we finish on is only appended to
364 * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
367 /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
368 * however, will allow the + if it is the first item in the sequence, regardless.
370 if ((!adding) || (!output_sequence.length()))
376 if ((adding) || (!output_sequence.length()))
384 * Watch carefully for the sleight of hand trick.
385 * 65 is the ascii value of 'A'. We take this from
386 * the char we're looking at to get a number between
387 * 1 and 127. We then logic-or it to get the hashed
388 * position, dependent on wether its a channel or
389 * a user mode. This is a little stranger, but a lot
390 * faster, than using a map of pairs.
392 handler_id = (modechar - 65) | mask;
394 if (modehandlers[handler_id])
398 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
400 if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
403 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
405 if (modehandlers[handler_id]->GetNumParams(adding))
407 /* This mode expects a parameter, do we have any parameters left in our list to use? */
408 if (parameter_counter < pcnt)
410 parameter = parameters[parameter_counter++];
413 if ((parameter.rfind(':') == parameter.begin()) || (parameter.rfind(' ') != std::string::npos))
418 /* No parameter, continue to the next mode */
423 /* It's an oper only mode, check if theyre an oper. If they arent,
424 * eat any parameter that came with the mode, and continue to next
426 if ((IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!*user->oper))
428 user->WriteServ("481 %s :Permission Denied- Only IRC operators may %sset %s mode %c", user->nick,
429 adding ? "" : "un", type == MODETYPE_CHANNEL ? "channel" : "user",
430 modehandlers[handler_id]->GetModeChar());
434 /* Call the handler for the mode */
435 ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
437 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter == ""))
439 /* The handler nuked the parameter and they are supposed to have one.
440 * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
441 * so we bail to the next mode character.
446 if (ma == MODEACTION_ALLOW)
448 /* We're about to output a valid mode letter - was there previously a pending state-change? */
450 output_sequence.append(adding ? "+" : "-");
452 /* Add the mode letter */
453 output_sequence.push_back(modechar);
455 /* Is there a valid parameter for this mode? If so add it to the parameter list */
456 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter != ""))
458 parameter_list << " " << parameter;
459 /* Does this mode have a prefix? */
460 if (modehandlers[handler_id]->GetPrefix() && targetchannel)
462 userrec* user_to_prefix = ServerInstance->FindNick(parameter);
464 targetchannel->SetPrefix(user_to_prefix, modehandlers[handler_id]->GetPrefix(),
465 modehandlers[handler_id]->GetPrefixRank(), adding);
469 /* Call all the AfterMode events in the mode watchers for this mode */
470 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
471 (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
473 /* Reset the state change flag */
474 state_change = false;
480 /* No mode handler? Unknown mode character then. */
481 user->WriteServ("472 %s %c :is unknown mode char to me",user->nick, modechar);
486 /* Was there at least one valid mode in the sequence? */
487 if (output_sequence != "")
491 if (type == MODETYPE_CHANNEL)
493 targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s %s%s", targetchannel->name, output_sequence.c_str(), parameter_list.str().c_str());
497 targetuser->WriteServ("MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());
502 if (type == MODETYPE_CHANNEL)
504 ServerInstance->Log(DEBUG,"Write output sequence and parameters to channel: %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
505 targetchannel->WriteChannel(user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
506 FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
510 user->WriteTo(targetuser,"MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());
511 FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence));
519 void cmd_mode::Handle (const char** parameters, int pcnt, userrec *user)
524 ServerInstance->Modes->Process(parameters, pcnt, user, false);
529 void ModeParser::CleanMask(std::string &mask)
531 std::string::size_type pos_of_pling = mask.find_first_of('!');
532 std::string::size_type pos_of_at = mask.find_first_of('@');
533 std::string::size_type pos_of_dot = mask.find_first_of('.');
534 std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */
536 if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
538 /* Just a nick, or just a host */
539 if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))
541 /* It has no '.' in it, it must be a nick. */
546 /* Got a dot in it? Has to be a host */
547 mask = "*!*@" + mask;
550 else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
552 /* Has an @ but no !, its a user@host */
555 else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
557 /* Has a ! but no @, it must be a nick!ident */
562 bool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)
564 unsigned char mask = 0;
565 unsigned char pos = 0;
567 /* Yes, i know, this might let people declare modes like '_' or '^'.
568 * If they do that, thats their problem, and if i ever EVER see an
569 * official InspIRCd developer do that, i'll beat them with a paddle!
571 if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z'))
574 /* A mode prefix of ',' is not acceptable, it would fuck up server to server.
575 * A mode prefix of ':' will fuck up both server to server, and client to server.
577 if ((mh->GetPrefix() == ',') || (mh->GetPrefix() == ':'))
580 mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
581 pos = (mh->GetModeChar()-65) | mask;
583 if (modehandlers[pos])
586 modehandlers[pos] = mh;
587 ServerInstance->Log(DEBUG,"ModeParser::AddMode: added mode %c",mh->GetModeChar());
591 ModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt)
593 unsigned char mask = 0;
594 unsigned char pos = 0;
596 if ((modeletter < 'A') || (modeletter > 'z'))
599 mt == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
600 pos = (modeletter-65) | mask;
602 return modehandlers[pos];
605 std::string ModeParser::UserModeList()
610 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
612 unsigned char pos = (mode-65) | MASK_USER;
614 if (modehandlers[pos])
615 modestr[pointer++] = mode;
617 modestr[pointer++] = 0;
621 std::string ModeParser::ChannelModeList()
626 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
628 unsigned char pos = (mode-65) | MASK_CHANNEL;
630 if (modehandlers[pos])
631 modestr[pointer++] = mode;
633 modestr[pointer++] = 0;
637 std::string ModeParser::ParaModeList()
642 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
644 unsigned char pos = (mode-65) | MASK_CHANNEL;
646 if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true)))
647 modestr[pointer++] = mode;
649 modestr[pointer++] = 0;
653 ModeHandler* ModeParser::FindPrefix(unsigned const char pfxletter)
655 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
657 unsigned char pos = (mode-65) | MASK_CHANNEL;
659 if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix() == pfxletter))
661 return modehandlers[pos];
667 std::string ModeParser::ModeString(userrec* user, chanrec* channel)
672 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
674 unsigned char pos = (mode-65) | MASK_CHANNEL;
675 ModeHandler* mh = modehandlers[pos];
676 if ((mh) && (mh->GetNumParams(true)) && (mh->GetNumParams(false)))
679 ret = mh->ModeSet(NULL, user, channel, user->nick);
683 pars.append(user->nick);
684 types.push_back(mh->GetModeChar());
692 std::string ModeParser::ChanModes()
694 std::string type1; /* Listmodes EXCEPT those with a prefix */
695 std::string type2; /* Modes that take a param when adding or removing */
696 std::string type3; /* Modes that only take a param when adding */
697 std::string type4; /* Modes that dont take a param */
699 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
701 unsigned char pos = (mode-65) | MASK_CHANNEL;
702 /* One parameter when adding */
703 if (modehandlers[pos])
705 if (modehandlers[pos]->GetNumParams(true))
707 if ((modehandlers[pos]->IsListMode()) && (!modehandlers[pos]->GetPrefix()))
709 type1 += modehandlers[pos]->GetModeChar();
713 /* ... and one parameter when removing */
714 if (modehandlers[pos]->GetNumParams(false))
716 /* But not a list mode */
717 if (!modehandlers[pos]->GetPrefix())
719 type2 += modehandlers[pos]->GetModeChar();
724 /* No parameters when removing */
725 type3 += modehandlers[pos]->GetModeChar();
731 type4 += modehandlers[pos]->GetModeChar();
737 return type1 + "," + type2 + "," + type3 + "," + type4;
740 bool ModeParser::PrefixComparison(const prefixtype one, const prefixtype two)
742 return one.second > two.second;
745 std::string ModeParser::BuildPrefixes()
747 std::string mletters = "";
748 std::string mprefixes = "";
750 std::map<char,char> prefix_to_mode;
752 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
754 unsigned char pos = (mode-65) | MASK_CHANNEL;
756 if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix()))
758 pfx.push_back(std::make_pair<char,unsigned int>(modehandlers[pos]->GetPrefix(), modehandlers[pos]->GetPrefixRank()));
759 prefix_to_mode[modehandlers[pos]->GetPrefix()] = modehandlers[pos]->GetModeChar();
763 sort(pfx.begin(), pfx.end(), ModeParser::PrefixComparison);
765 for (pfxcontainer::iterator n = pfx.begin(); n != pfx.end(); n++)
767 mletters = mletters + n->first;
768 mprefixes = mprefixes + prefix_to_mode.find(n->first)->second;
771 return "(" + mprefixes + ")" + mletters;
774 bool ModeParser::AddModeWatcher(ModeWatcher* mw)
776 unsigned char mask = 0;
777 unsigned char pos = 0;
782 if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
785 mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
786 pos = (mw->GetModeChar()-65) | mask;
788 modewatchers[pos].push_back(mw);
789 ServerInstance->Log(DEBUG,"ModeParser::AddModeWatcher: watching mode %c",mw->GetModeChar());
794 bool ModeParser::DelModeWatcher(ModeWatcher* mw)
796 unsigned char mask = 0;
797 unsigned char pos = 0;
802 if ((mw->GetModeType() < 'A') || (mw->GetModeType() > 'z'))
805 mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
806 pos = (mw->GetModeChar()-65) | mask;
808 ModeWatchIter a = find(modewatchers[pos].begin(),modewatchers[pos].end(),mw);
810 if (a == modewatchers[pos].end())
813 modewatchers[pos].erase(a);
814 ServerInstance->Log(DEBUG,"ModeParser::DelModeWatcher: stopped watching mode %c",mw->GetModeChar());
819 ModeParser::ModeParser(InspIRCd* Instance) : ServerInstance(Instance)
821 /* Clear mode list */
822 memset(modehandlers, 0, sizeof(modehandlers));
823 memset(modewatchers, 0, sizeof(modewatchers));
825 /* Initialise the RFC mode letters */
827 /* Start with channel simple modes, no params */
828 this->AddMode(new ModeChannelSecret(Instance), 's');
829 this->AddMode(new ModeChannelPrivate(Instance), 'p');
830 this->AddMode(new ModeChannelModerated(Instance), 'm');
831 this->AddMode(new ModeChannelTopicOps(Instance), 't');
832 this->AddMode(new ModeChannelNoExternal(Instance), 'n');
833 this->AddMode(new ModeChannelInviteOnly(Instance), 'i');
835 /* Cannel modes with params */
836 this->AddMode(new ModeChannelKey(Instance), 'k');
837 this->AddMode(new ModeChannelLimit(Instance), 'l');
839 /* Channel listmodes */
840 this->AddMode(new ModeChannelBan(Instance), 'b');
841 this->AddMode(new ModeChannelOp(Instance), 'o');
842 this->AddMode(new ModeChannelHalfOp(Instance), 'h');
843 this->AddMode(new ModeChannelVoice(Instance), 'v');
845 /* Now for usermodes */
846 this->AddMode(new ModeUserServerNotice(Instance), 's');
847 this->AddMode(new ModeUserWallops(Instance), 'w');
848 this->AddMode(new ModeUserInvisible(Instance), 'i');
849 this->AddMode(new ModeUserOperator(Instance), 'o');
850 this->AddMode(new ModeUserServerNoticeMask(Instance), 'n');