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"
68 extern std::vector<Module*> modules;
69 extern std::vector<ircd_module*> factory;
70 extern InspIRCd* ServerInstance;
71 extern ServerConfig* Config;
75 ModeHandler::ModeHandler(char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly)
76 : mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly)
80 ModeHandler::~ModeHandler()
84 bool ModeHandler::IsListMode()
89 ModeType ModeHandler::GetModeType()
94 bool ModeHandler::NeedsOper()
99 int ModeHandler::GetNumParams(bool adding)
101 return adding ? n_params_on : n_params_off;
104 char ModeHandler::GetModeChar()
109 ModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)
111 return MODEACTION_DENY;
114 void ModeHandler::DisplayList(userrec* user, chanrec* channel)
118 bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
120 return (ours < theirs);
123 ModeWatcher::ModeWatcher(char modeletter, ModeType type) : mode(modeletter), m_type(type)
127 ModeWatcher::~ModeWatcher()
131 char ModeWatcher::GetModeChar()
136 ModeType ModeWatcher::GetModeType()
141 bool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding, ModeType type)
146 void ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter, bool adding, ModeType type)
150 userrec* ModeParser::SanityChecks(userrec *user,const char *dest,chanrec *chan,int status)
153 if ((!user) || (!dest) || (!chan) || (!*dest))
160 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
166 const char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
171 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
173 ucrec* n = (ucrec*)(*i);
174 if (n->channel == chan)
176 if (n->uc_modes & MASK)
180 n->uc_modes = n->uc_modes | MASK;
184 n->channel->AddOppedUser(d);
187 n->channel->AddHalfoppedUser(d);
190 n->channel->AddVoicedUser(d);
193 log(DEBUG,"grant: %s %s",n->channel->name,d->nick);
200 const char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
205 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
207 ucrec* n = (ucrec*)(*i);
208 if (n->channel == chan)
210 if ((n->uc_modes & MASK) == 0)
218 n->channel->DelOppedUser(d);
221 n->channel->DelHalfoppedUser(d);
224 n->channel->DelVoicedUser(d);
227 log(DEBUG,"revoke: %s %s",n->channel->name,d->nick);
234 void ModeParser::DisplayCurrentModes(userrec *user, userrec* targetuser, chanrec* targetchannel, const char* text)
238 /* Display channel's current mode string */
239 WriteServ(user->fd,"324 %s %s +%s",user->nick, targetchannel->name, chanmodes(targetchannel, targetchannel->HasUser(user)));
240 WriteServ(user->fd,"329 %s %s %d", user->nick, targetchannel->name, targetchannel->created);
245 /* Display user's current mode string */
246 WriteServ(user->fd,"221 %s :+%s",targetuser->nick,targetuser->FormatModes());
249 /* No such nick/channel */
250 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, text);
254 void ModeParser::Process(char **parameters, int pcnt, userrec *user, bool servermode)
256 std::string target = parameters[0];
257 ModeType type = MODETYPE_USER;
258 unsigned char mask = 0;
259 chanrec* targetchannel = FindChan(parameters[0]);
260 userrec* targetuser = Find(parameters[0]);
262 log(DEBUG,"ModeParser::Process start");
266 this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);
272 type = MODETYPE_CHANNEL;
275 /* Extra security checks on channel modes
276 * (e.g. are they a (half)op?
279 if (cstatus(user, targetchannel) < STATUS_HOP)
281 /* We don't have halfop */
282 log(DEBUG,"The user is not a halfop or above, checking other reasons for being able to set the modes");
284 /* Are we a uline or is it a servermode? */
285 if ((!is_uline(user->server)) && (!servermode))
287 /* Not enough permission:
288 * NOT a uline and NOT a servermode,
289 * OR, NOT halfop or above.
291 WriteServ(user->fd,"482 %s %s :You're not a channel (half)operator",user->nick, targetchannel->name);
298 type = MODETYPE_USER;
303 /* No such nick/channel */
304 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
308 /* Special case for displaying the list for listmodes,
309 * e.g. MODE #chan b, or MODE #chan +b without a parameter
311 if ((type== MODETYPE_CHANNEL) && (pcnt == 2))
313 char* mode = parameters[1];
317 unsigned char handler_id = ((*mode) - 65) | mask;
318 ModeHandler* mh = modehandlers[handler_id];
320 if ((mh) && (mh->IsListMode()))
322 mh->DisplayList(user, targetchannel);
326 std::string mode_sequence = parameters[1];
327 std::string parameter = "";
328 std::ostringstream parameter_list;
329 std::string output_sequence = "";
330 bool adding = true, state_change = false;
331 unsigned char handler_id = 0;
332 int parameter_counter = 2; /* Index of first parameter */
334 for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
336 unsigned char modechar = *letter;
341 * For + and - mode characters, we don't just stick the character into the output sequence.
342 * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
343 * appearing in the output sequence, we store a flag which says there was a state change,
344 * which is set on any + or -, however, the + or - that we finish on is only appended to
345 * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
348 /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
349 * however, will allow the + if it is the first item in the sequence, regardless.
351 if ((!adding) || (!output_sequence.length()))
357 if ((adding) || (!output_sequence.length()))
365 * Watch carefully for the sleight of hand trick.
366 * 65 is the ascii value of 'A'. We take this from
367 * the char we're looking at to get a number between
368 * 1 and 127. We then logic-or it to get the hashed
369 * position, dependent on wether its a channel or
370 * a user mode. This is a little stranger, but a lot
371 * faster, than using a map of pairs.
373 handler_id = (modechar - 65) | mask;
375 if (modehandlers[handler_id])
379 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
381 if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
384 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
386 if (modehandlers[handler_id]->GetNumParams(adding))
388 /* This mode expects a parameter, do we have any parameters left in our list to use? */
389 if (parameter_counter < pcnt)
391 parameter = parameters[parameter_counter++];
395 /* No parameter, continue to the next mode */
400 /* It's an oper only mode, check if theyre an oper. If they arent,
401 * eat any parameter that came with the mode, and continue to next
403 if ((modehandlers[handler_id]->NeedsOper()) && (!*user->oper))
406 /* Call the handler for the mode */
407 ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
409 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter == ""))
411 /* The handler nuked the parameter and they are supposed to have one.
412 * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
413 * so we bail to the next mode character.
418 if (ma == MODEACTION_ALLOW)
420 /* We're about to output a valid mode letter - was there previously a pending state-change? */
422 output_sequence.append(adding ? "+" : "-");
424 /* Add the mode letter */
425 output_sequence.push_back(modechar);
427 /* Is there a valid parameter for this mode? If so add it to the parameter list */
428 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter != ""))
429 parameter_list << " " << parameter;
431 /* Call all the AfterMode events in the mode watchers for this mode */
432 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
433 (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
435 /* Reset the state change flag */
436 state_change = false;
442 /* No mode handler? Unknown mode character then. */
443 WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick, modechar);
448 /* Was there at least one valid mode in the sequence? */
449 if (output_sequence != "")
453 if (type == MODETYPE_CHANNEL)
455 WriteChannelWithServ(Config->ServerName,targetchannel,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
459 WriteServ(targetuser->fd,"MODE %s %s",targetuser->nick,output_sequence.c_str());
464 if (type == MODETYPE_CHANNEL)
466 log(DEBUG,"Write output sequence and parameters to channel: %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
467 WriteChannel(targetchannel,user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
468 FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
472 WriteTo(user,targetuser,"MODE %s %s",targetuser->nick,output_sequence.c_str());
473 FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence));
481 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
486 ServerInstance->ModeGrok->Process(parameters, pcnt, user, false);
491 void ModeParser::CleanMask(std::string &mask)
493 std::string::size_type pos_of_pling = mask.find_first_of('!');
494 std::string::size_type pos_of_at = mask.find_first_of('@');
495 std::string::size_type pos_of_dot = mask.find_first_of('.');
496 std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */
498 if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
500 /* Just a nick, or just a host */
501 if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))
503 /* It has no '.' in it, it must be a nick. */
508 /* Got a dot in it? Has to be a host */
509 mask = "*!*@" + mask;
512 else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
514 /* Has an @ but no !, its a user@host */
517 else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
519 /* Has a ! but no @, it must be a nick!ident */
524 void ModeParser::BuildModeString(userrec* user)
528 bool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)
530 unsigned char mask = 0;
531 unsigned char pos = 0;
533 /* Yes, i know, this might let people declare modes like '_' or '^'.
534 * If they do that, thats their problem, and if i ever EVER see an
535 * official InspIRCd developer do that, i'll beat them with a paddle!
537 if ((modeletter < 'A') || (modeletter > 'z'))
540 mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
541 pos = (modeletter-65) | mask;
543 if (modehandlers[pos])
546 modehandlers[pos] = mh;
547 log(DEBUG,"ModeParser::AddMode: added mode %c",modeletter);
551 ModeParser::ModeParser()
553 /* Clear mode list */
554 memset(modehandlers, 0, sizeof(modehandlers));
555 memset(modewatchers, 0, sizeof(modewatchers));
557 /* Initialise the RFC mode letters */
559 /* Start with channel simple modes, no params */
560 this->AddMode(new ModeChannelSecret, 's');
561 this->AddMode(new ModeChannelPrivate, 'p');
562 this->AddMode(new ModeChannelModerated, 'm');
563 this->AddMode(new ModeChannelTopicOps, 't');
564 this->AddMode(new ModeChannelNoExternal, 'n');
565 this->AddMode(new ModeChannelInviteOnly, 'i');
567 /* Cannel modes with params */
568 this->AddMode(new ModeChannelKey, 'k');
569 this->AddMode(new ModeChannelLimit, 'l');
571 /* Channel listmodes */
572 this->AddMode(new ModeChannelBan, 'b');
573 this->AddMode(new ModeChannelOp, 'o');
574 this->AddMode(new ModeChannelHalfOp, 'h');
575 this->AddMode(new ModeChannelVoice, 'v');
577 /* Now for usermodes */
578 this->AddMode(new ModeUserServerNotice, 's');
579 this->AddMode(new ModeUserWallops, 'w');
580 this->AddMode(new ModeUserInvisible, 'i');
581 this->AddMode(new ModeUserOperator, 'o');
583 /* TODO: User modes +swio */