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"
66 extern std::vector<Module*> modules;
67 extern std::vector<ircd_module*> factory;
68 extern InspIRCd* ServerInstance;
69 extern ServerConfig* Config;
73 ModeHandler::ModeHandler(char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly)
74 : mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly)
78 ModeHandler::~ModeHandler()
82 bool ModeHandler::IsListMode()
87 ModeType ModeHandler::GetModeType()
92 bool ModeHandler::NeedsOper()
97 int ModeHandler::GetNumParams(bool adding)
99 return adding ? n_params_on : n_params_off;
102 char ModeHandler::GetModeChar()
107 ModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)
109 return MODEACTION_DENY;
112 void ModeHandler::DisplayList(userrec* user, chanrec* channel)
116 bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
118 return (ours < theirs);
121 ModeWatcher::ModeWatcher(char modeletter, ModeType type) : mode(modeletter), m_type(type)
125 ModeWatcher::~ModeWatcher()
129 char ModeWatcher::GetModeChar()
134 ModeType ModeWatcher::GetModeType()
139 bool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding, ModeType type)
144 void ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter, bool adding, ModeType type)
148 userrec* ModeParser::SanityChecks(userrec *user,const char *dest,chanrec *chan,int status)
151 if ((!user) || (!dest) || (!chan) || (!*dest))
158 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
164 const char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
169 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
171 ucrec* n = (ucrec*)(*i);
172 if (n->channel == chan)
174 if (n->uc_modes & MASK)
178 n->uc_modes = ((ucrec*)(*i))->uc_modes | MASK;
182 n->channel->AddOppedUser(d);
185 n->channel->AddHalfoppedUser(d);
188 n->channel->AddVoicedUser(d);
191 log(DEBUG,"grant: %s %s",n->channel->name,d->nick);
198 const char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
203 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
205 ucrec* n = (ucrec*)(*i);
206 if (n->channel == chan)
208 if ((n->uc_modes & MASK) == 0)
216 n->channel->DelOppedUser(d);
219 n->channel->DelHalfoppedUser(d);
222 n->channel->DelVoicedUser(d);
225 log(DEBUG,"revoke: %s %s",n->channel->name,d->nick);
232 void ModeParser::DisplayCurrentModes(userrec *user, userrec* targetuser, chanrec* targetchannel, const char* text)
236 /* Display channel's current mode string */
237 WriteServ(user->fd,"324 %s %s +%s",user->nick, targetchannel->name, chanmodes(targetchannel, targetchannel->HasUser(user)));
238 WriteServ(user->fd,"329 %s %s %d", user->nick, targetchannel->name, targetchannel->created);
243 /* Display user's current mode string */
244 WriteServ(user->fd,"221 %s :+%s",targetuser->nick,targetuser->FormatModes());
247 /* No such nick/channel */
248 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, text);
252 void ModeParser::Process(char **parameters, int pcnt, userrec *user, bool servermode)
254 std::string target = parameters[0];
255 ModeType type = MODETYPE_USER;
256 unsigned char mask = 0;
257 chanrec* targetchannel = FindChan(parameters[0]);
258 userrec* targetuser = Find(parameters[0]);
260 log(DEBUG,"ModeParser::Process start");
264 this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);
270 type = MODETYPE_CHANNEL;
273 /* Extra security checks on channel modes
274 * (e.g. are they a (half)op?
277 if (cstatus(user, targetchannel) < STATUS_HOP)
279 /* We don't have halfop */
280 log(DEBUG,"The user is not a halfop or above, checking other reasons for being able to set the modes");
282 /* Are we a uline or is it a servermode? */
283 if ((!is_uline(user->server)) && (!servermode))
285 /* Not enough permission:
286 * NOT a uline and NOT a servermode,
287 * OR, NOT halfop or above.
289 WriteServ(user->fd,"482 %s %s :You're not a channel (half)operator",user->nick, targetchannel->name);
296 type = MODETYPE_USER;
301 /* No such nick/channel */
302 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
305 std::string mode_sequence = parameters[1];
306 std::string parameter = "";
307 std::ostringstream parameter_list;
308 std::string output_sequence = "";
309 bool adding = true, state_change = false;
311 int parameter_counter = 2; /* Index of first parameter */
313 for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
315 unsigned char modechar = *letter;
320 * For + and - mode characters, we don't just stick the character into the output sequence.
321 * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
322 * appearing in the output sequence, we store a flag which says there was a state change,
323 * which is set on any + or -, however, the + or - that we finish on is only appended to
324 * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
327 /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
328 * however, will allow the + if it is the first item in the sequence, regardless.
330 if ((!adding) || (!output_sequence.length()))
336 if ((adding) || (!output_sequence.length()))
344 * Watch carefully for the sleight of hand trick.
345 * 65 is the ascii value of 'A'. We take this from
346 * the char we're looking at to get a number between
347 * 1 and 127. We then logic-or it to get the hashed
348 * position, dependent on wether its a channel or
349 * a user mode. This is a little stranger, but a lot
350 * faster, than using a map of pairs.
352 handler_id = (modechar - 65) | mask;
354 if (modehandlers[handler_id])
358 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
360 if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
363 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
365 if (modehandlers[handler_id]->GetNumParams(adding))
367 /* This mode expects a parameter, do we have any parameters left in our list to use? */
368 if (parameter_counter < pcnt)
370 parameter = parameters[parameter_counter++];
374 /* No parameter, continue to the next mode */
379 /* Call the handler for the mode */
380 ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
382 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter == ""))
384 /* The handler nuked the parameter and they are supposed to have one.
385 * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
386 * so we bail to the next mode character.
391 if (ma == MODEACTION_ALLOW)
393 /* We're about to output a valid mode letter - was there previously a pending state-change? */
395 output_sequence.append(adding ? "+" : "-");
397 /* Add the mode letter */
398 output_sequence.push_back(modechar);
400 /* Is there a valid parameter for this mode? If so add it to the parameter list */
401 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter != ""))
402 parameter_list << " " << parameter;
404 /* Call all the AfterMode events in the mode watchers for this mode */
405 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
406 (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
408 /* Reset the state change flag */
409 state_change = false;
415 /* No mode handler? Unknown mode character then. */
416 WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick, modechar);
421 /* Was there at least one valid mode in the sequence? */
422 if (output_sequence != "")
426 if (type == MODETYPE_CHANNEL)
428 WriteChannelWithServ(Config->ServerName,targetchannel,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
432 WriteServ(targetuser->fd,"MODE %s %s",targetuser->nick,output_sequence.c_str());
437 if (type == MODETYPE_CHANNEL)
439 log(DEBUG,"Write output sequence and parameters to channel: %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
440 WriteChannel(targetchannel,user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
441 FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
445 WriteTo(user,targetuser,"MODE %s %s",targetuser->nick,output_sequence.c_str());
446 FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence));
454 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
459 ServerInstance->ModeGrok->Process(parameters, pcnt, user, false);
464 void ModeParser::CleanMask(std::string &mask)
466 std::string::size_type pos_of_pling = mask.find_first_of('!');
467 std::string::size_type pos_of_at = mask.find_first_of('@');
468 std::string::size_type pos_of_dot = mask.find_first_of('.');
469 std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */
471 if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
473 /* Just a nick, or just a host */
474 if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))
476 /* It has no '.' in it, it must be a nick. */
481 /* Got a dot in it? Has to be a host */
482 mask = "*!*@" + mask;
485 else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
487 /* Has an @ but no !, its a user@host */
490 else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
492 /* Has a ! but no @, it must be a nick!ident */
497 void ModeParser::BuildModeString(userrec* user)
501 bool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)
503 unsigned char mask = 0;
504 unsigned char pos = 0;
506 /* Yes, i know, this might let people declare modes like '_' or '^'.
507 * If they do that, thats their problem, and if i ever EVER see an
508 * official InspIRCd developer do that, i'll beat them with a paddle!
510 if ((modeletter < 'A') || (modeletter > 'z'))
513 mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
514 pos = (modeletter-65) | mask;
516 if (modehandlers[pos])
519 modehandlers[pos] = mh;
520 log(DEBUG,"ModeParser::AddMode: added mode %c",modeletter);
524 ModeParser::ModeParser()
526 /* Clear mode list */
527 memset(modehandlers, 0, sizeof(modehandlers));
528 memset(modewatchers, 0, sizeof(modewatchers));
530 /* Initialise the RFC mode letters */
532 /* Start with channel simple modes, no params */
533 this->AddMode(new ModeChannelSecret, 's');
534 this->AddMode(new ModeChannelPrivate, 'p');
535 this->AddMode(new ModeChannelModerated, 'm');
536 this->AddMode(new ModeChannelTopicOps, 't');
537 this->AddMode(new ModeChannelNoExternal, 'n');
538 this->AddMode(new ModeChannelInviteOnly, 'i');
540 /* Cannel modes with params */
541 this->AddMode(new ModeChannelKey, 'k');
542 this->AddMode(new ModeChannelLimit, 'l');
544 /* Channel listmodes */
545 this->AddMode(new ModeChannelBan, 'b');
546 this->AddMode(new ModeChannelOp, 'o');
547 this->AddMode(new ModeChannelHalfOp, 'h');
548 this->AddMode(new ModeChannelVoice, 'v');
550 /* Now for usermodes */
551 this->AddMode(new ModeUserServerNotice, 's');
552 this->AddMode(new ModeUserWallops, 'w');
553 this->AddMode(new ModeUserInvisible, 'i');
555 /* TODO: User modes +swio */