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"
28 #include "inspstring.h"
29 #include "helperfuncs.h"
34 #include "modes/cmode_s.h"
36 #include "modes/cmode_p.h"
38 #include "modes/cmode_b.h"
40 #include "modes/cmode_m.h"
41 /* +t (only (half) ops can change topic) */
42 #include "modes/cmode_t.h"
43 /* +n (no external messages) */
44 #include "modes/cmode_n.h"
45 /* +i (invite only) */
46 #include "modes/cmode_i.h"
47 /* +k (keyed channel) */
48 #include "modes/cmode_k.h"
49 /* +l (channel user limit) */
50 #include "modes/cmode_l.h"
52 #include "modes/cmode_o.h"
53 /* +h (channel halfop) */
54 #include "modes/cmode_h.h"
55 /* +v (channel voice) */
56 #include "modes/cmode_v.h"
58 /* +s (server notices) */
59 #include "modes/umode_s.h"
60 /* +w (see wallops) */
61 #include "modes/umode_w.h"
63 #include "modes/umode_i.h"
65 #include "modes/umode_o.h"
66 /* +n (notice mask - our implementation of snomasks) */
67 #include "modes/umode_n.h"
70 extern std::vector<Module*> modules;
71 extern std::vector<ircd_module*> factory;
72 extern InspIRCd* ServerInstance;
73 extern ServerConfig* Config;
77 ModeHandler::ModeHandler(char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly)
78 : mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly)
82 ModeHandler::~ModeHandler()
86 bool ModeHandler::IsListMode()
91 ModeType ModeHandler::GetModeType()
96 bool ModeHandler::NeedsOper()
101 int ModeHandler::GetNumParams(bool adding)
103 return adding ? n_params_on : n_params_off;
106 char ModeHandler::GetModeChar()
111 ModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)
113 return MODEACTION_DENY;
116 ModePair ModeHandler::ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter)
120 return std::make_pair(dest->IsModeSet(this->mode), "");
124 return std::make_pair(channel->IsModeSet(this->mode), "");
128 void ModeHandler::DisplayList(userrec* user, chanrec* channel)
132 bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
134 return (ours < theirs);
137 ModeWatcher::ModeWatcher(char modeletter, ModeType type) : mode(modeletter), m_type(type)
141 ModeWatcher::~ModeWatcher()
145 char ModeWatcher::GetModeChar()
150 ModeType ModeWatcher::GetModeType()
155 bool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding, ModeType type)
160 void ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter, bool adding, ModeType type)
164 userrec* ModeParser::SanityChecks(userrec *user,const char *dest,chanrec *chan,int status)
167 if ((!user) || (!dest) || (!chan) || (!*dest))
174 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
180 const char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
185 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
187 ucrec* n = (ucrec*)(*i);
188 if (n->channel == chan)
190 if (n->uc_modes & MASK)
194 n->uc_modes = n->uc_modes | MASK;
198 n->channel->AddOppedUser(d);
201 n->channel->AddHalfoppedUser(d);
204 n->channel->AddVoicedUser(d);
207 log(DEBUG,"grant: %s %s",n->channel->name,d->nick);
214 const char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
219 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
221 ucrec* n = (ucrec*)(*i);
222 if (n->channel == chan)
224 if ((n->uc_modes & MASK) == 0)
232 n->channel->DelOppedUser(d);
235 n->channel->DelHalfoppedUser(d);
238 n->channel->DelVoicedUser(d);
241 log(DEBUG,"revoke: %s %s",n->channel->name,d->nick);
248 void ModeParser::DisplayCurrentModes(userrec *user, userrec* targetuser, chanrec* targetchannel, const char* text)
252 /* Display channel's current mode string */
253 WriteServ(user->fd,"324 %s %s +%s",user->nick, targetchannel->name, chanmodes(targetchannel, targetchannel->HasUser(user)));
254 WriteServ(user->fd,"329 %s %s %d", user->nick, targetchannel->name, targetchannel->created);
259 /* Display user's current mode string */
260 WriteServ(user->fd,"221 %s :+%s",targetuser->nick,targetuser->FormatModes());
261 WriteServ(user->fd, "008 %s :+%s", targetuser->nick, targetuser->FormatNoticeMasks());
265 /* No such nick/channel */
266 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, text);
270 void ModeParser::Process(const char** parameters, int pcnt, userrec *user, bool servermode)
272 std::string target = parameters[0];
273 ModeType type = MODETYPE_USER;
274 unsigned char mask = 0;
275 chanrec* targetchannel = FindChan(parameters[0]);
276 userrec* targetuser = Find(parameters[0]);
278 log(DEBUG,"ModeParser::Process start");
280 /* Special case for displaying the list for listmodes,
281 * e.g. MODE #chan b, or MODE #chan +b without a parameter
283 if ((targetchannel) && (pcnt == 2))
285 const char* mode = parameters[1];
288 unsigned char handler_id = ((*mode) - 65) | MASK_CHANNEL;
289 ModeHandler* mh = modehandlers[handler_id];
290 if ((mh) && (mh->IsListMode()))
292 mh->DisplayList(user, targetchannel);
299 this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);
305 type = MODETYPE_CHANNEL;
308 /* Extra security checks on channel modes
309 * (e.g. are they a (half)op?
312 if ((IS_LOCAL(user)) && (cstatus(user, targetchannel) < STATUS_HOP))
314 /* We don't have halfop */
315 log(DEBUG,"The user is not a halfop or above, checking other reasons for being able to set the modes");
317 /* Are we a uline or is it a servermode? */
318 if ((!is_uline(user->server)) && (!servermode))
320 /* Not enough permission:
321 * NOT a uline and NOT a servermode,
322 * OR, NOT halfop or above.
324 WriteServ(user->fd,"482 %s %s :You're not a channel (half)operator",user->nick, targetchannel->name);
331 type = MODETYPE_USER;
336 /* No such nick/channel */
337 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
341 std::string mode_sequence = parameters[1];
342 std::string parameter = "";
343 std::ostringstream parameter_list;
344 std::string output_sequence = "";
345 bool adding = true, state_change = false;
346 unsigned char handler_id = 0;
347 int parameter_counter = 2; /* Index of first parameter */
349 for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
351 unsigned char modechar = *letter;
356 * For + and - mode characters, we don't just stick the character into the output sequence.
357 * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
358 * appearing in the output sequence, we store a flag which says there was a state change,
359 * which is set on any + or -, however, the + or - that we finish on is only appended to
360 * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
363 /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
364 * however, will allow the + if it is the first item in the sequence, regardless.
366 if ((!adding) || (!output_sequence.length()))
372 if ((adding) || (!output_sequence.length()))
380 * Watch carefully for the sleight of hand trick.
381 * 65 is the ascii value of 'A'. We take this from
382 * the char we're looking at to get a number between
383 * 1 and 127. We then logic-or it to get the hashed
384 * position, dependent on wether its a channel or
385 * a user mode. This is a little stranger, but a lot
386 * faster, than using a map of pairs.
388 handler_id = (modechar - 65) | mask;
390 if (modehandlers[handler_id])
394 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
396 if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
399 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
401 if (modehandlers[handler_id]->GetNumParams(adding))
403 /* This mode expects a parameter, do we have any parameters left in our list to use? */
404 if (parameter_counter < pcnt)
406 parameter = parameters[parameter_counter++];
410 /* No parameter, continue to the next mode */
415 /* It's an oper only mode, check if theyre an oper. If they arent,
416 * eat any parameter that came with the mode, and continue to next
418 if ((IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!*user->oper))
421 /* Call the handler for the mode */
422 ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
424 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter == ""))
426 /* The handler nuked the parameter and they are supposed to have one.
427 * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
428 * so we bail to the next mode character.
433 if (ma == MODEACTION_ALLOW)
435 /* We're about to output a valid mode letter - was there previously a pending state-change? */
437 output_sequence.append(adding ? "+" : "-");
439 /* Add the mode letter */
440 output_sequence.push_back(modechar);
442 /* Is there a valid parameter for this mode? If so add it to the parameter list */
443 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter != ""))
444 parameter_list << " " << parameter;
446 /* Call all the AfterMode events in the mode watchers for this mode */
447 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
448 (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
450 /* Reset the state change flag */
451 state_change = false;
457 /* No mode handler? Unknown mode character then. */
458 WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick, modechar);
463 /* Was there at least one valid mode in the sequence? */
464 if (output_sequence != "")
468 if (type == MODETYPE_CHANNEL)
470 WriteChannelWithServ(Config->ServerName,targetchannel,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
474 WriteServ(targetuser->fd,"MODE %s %s",targetuser->nick,output_sequence.c_str());
479 if (type == MODETYPE_CHANNEL)
481 log(DEBUG,"Write output sequence and parameters to channel: %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
482 WriteChannel(targetchannel,user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
483 FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
487 WriteTo(user,targetuser,"MODE %s %s",targetuser->nick,output_sequence.c_str());
488 FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence));
496 void cmd_mode::Handle (const char** parameters, int pcnt, userrec *user)
501 ServerInstance->ModeGrok->Process(parameters, pcnt, user, false);
506 void ModeParser::CleanMask(std::string &mask)
508 std::string::size_type pos_of_pling = mask.find_first_of('!');
509 std::string::size_type pos_of_at = mask.find_first_of('@');
510 std::string::size_type pos_of_dot = mask.find_first_of('.');
511 std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */
513 if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
515 /* Just a nick, or just a host */
516 if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))
518 /* It has no '.' in it, it must be a nick. */
523 /* Got a dot in it? Has to be a host */
524 mask = "*!*@" + mask;
527 else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
529 /* Has an @ but no !, its a user@host */
532 else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
534 /* Has a ! but no @, it must be a nick!ident */
539 bool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)
541 unsigned char mask = 0;
542 unsigned char pos = 0;
544 /* Yes, i know, this might let people declare modes like '_' or '^'.
545 * If they do that, thats their problem, and if i ever EVER see an
546 * official InspIRCd developer do that, i'll beat them with a paddle!
548 if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z'))
551 mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
552 pos = (mh->GetModeChar()-65) | mask;
554 if (modehandlers[pos])
557 modehandlers[pos] = mh;
558 log(DEBUG,"ModeParser::AddMode: added mode %c",mh->GetModeChar());
562 ModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt)
564 unsigned char mask = 0;
565 unsigned char pos = 0;
567 if ((modeletter < 'A') || (modeletter > 'z'))
570 mt == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
571 pos = (modeletter-65) | mask;
573 return modehandlers[pos];
576 std::string ModeParser::UserModeList()
581 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
583 unsigned char pos = (mode-65) | MASK_USER;
585 if (modehandlers[pos])
586 modestr[pointer++] = mode;
588 modestr[pointer++] = 0;
592 std::string ModeParser::ChannelModeList()
597 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
599 unsigned char pos = (mode-65) | MASK_CHANNEL;
601 if (modehandlers[pos])
602 modestr[pointer++] = mode;
604 modestr[pointer++] = 0;
608 std::string ModeParser::ParaModeList()
613 for (unsigned char mode = 'A'; mode <= 'z'; mode++)
615 unsigned char pos = (mode-65) | MASK_CHANNEL;
617 if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true)))
618 modestr[pointer++] = mode;
620 modestr[pointer++] = 0;
624 bool ModeParser::AddModeWatcher(ModeWatcher* mw)
626 unsigned char mask = 0;
627 unsigned char pos = 0;
632 if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
635 mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
636 pos = (mw->GetModeChar()-65) | mask;
638 modewatchers[pos].push_back(mw);
639 log(DEBUG,"ModeParser::AddModeWatcher: watching mode %c",mw->GetModeChar());
644 bool ModeParser::DelModeWatcher(ModeWatcher* mw)
646 unsigned char mask = 0;
647 unsigned char pos = 0;
652 if ((mw->GetModeType() < 'A') || (mw->GetModeType() > 'z'))
655 mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
656 pos = (mw->GetModeChar()-65) | mask;
658 ModeWatchIter a = find(modewatchers[pos].begin(),modewatchers[pos].end(),mw);
660 if (a == modewatchers[pos].end())
663 modewatchers[pos].erase(a);
664 log(DEBUG,"ModeParser::DelModeWatcher: stopped watching mode %c",mw->GetModeChar());
669 ModeParser::ModeParser()
671 /* Clear mode list */
672 memset(modehandlers, 0, sizeof(modehandlers));
673 memset(modewatchers, 0, sizeof(modewatchers));
675 /* Initialise the RFC mode letters */
677 /* Start with channel simple modes, no params */
678 this->AddMode(new ModeChannelSecret, 's');
679 this->AddMode(new ModeChannelPrivate, 'p');
680 this->AddMode(new ModeChannelModerated, 'm');
681 this->AddMode(new ModeChannelTopicOps, 't');
682 this->AddMode(new ModeChannelNoExternal, 'n');
683 this->AddMode(new ModeChannelInviteOnly, 'i');
685 /* Cannel modes with params */
686 this->AddMode(new ModeChannelKey, 'k');
687 this->AddMode(new ModeChannelLimit, 'l');
689 /* Channel listmodes */
690 this->AddMode(new ModeChannelBan, 'b');
691 this->AddMode(new ModeChannelOp, 'o');
692 this->AddMode(new ModeChannelHalfOp, 'h');
693 this->AddMode(new ModeChannelVoice, 'v');
695 /* Now for usermodes */
696 this->AddMode(new ModeUserServerNotice, 's');
697 this->AddMode(new ModeUserWallops, 'w');
698 this->AddMode(new ModeUserInvisible, 'i');
699 this->AddMode(new ModeUserOperator, 'o');
700 this->AddMode(new ModeUserServerNoticeMask, 'n');