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"
23 #include <sys/errno.h>
31 #include "connection.h"
41 #include "inspstring.h"
42 #include "helperfuncs.h"
46 #include "modes/cmode_s.h"
48 #include "modes/cmode_p.h"
50 #include "modes/cmode_b.h"
52 #include "modes/cmode_m.h"
53 /* +t (only (half) ops can change topic) */
54 #include "modes/cmode_t.h"
55 /* +n (no external messages) */
56 #include "modes/cmode_n.h"
59 extern std::vector<Module*> modules;
60 extern std::vector<ircd_module*> factory;
61 extern InspIRCd* ServerInstance;
62 extern ServerConfig* Config;
66 ModeHandler::ModeHandler(char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly)
67 : mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly)
71 ModeHandler::~ModeHandler()
75 bool ModeHandler::IsListMode()
80 ModeType ModeHandler::GetModeType()
85 bool ModeHandler::NeedsOper()
90 int ModeHandler::GetNumParams(bool adding)
92 return adding ? n_params_on : n_params_off;
95 char ModeHandler::GetModeChar()
100 ModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)
102 return MODEACTION_DENY;
105 void ModeHandler::DisplayList(userrec* user, chanrec* channel)
109 bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
111 return (ours < theirs);
114 ModeWatcher::ModeWatcher(char modeletter, ModeType type) : mode(modeletter), m_type(type)
118 ModeWatcher::~ModeWatcher()
122 char ModeWatcher::GetModeChar()
127 ModeType ModeWatcher::GetModeType()
132 bool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding, ModeType type)
137 void ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter, bool adding, ModeType type)
141 userrec* ModeParser::SanityChecks(userrec *user,char *dest,chanrec *chan,int status)
144 if ((!user) || (!dest) || (!chan) || (!*dest))
151 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
157 char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
162 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
164 if (((ucrec*)(*i))->channel == chan)
166 if (((ucrec*)(*i))->uc_modes & MASK)
170 ((ucrec*)(*i))->uc_modes = ((ucrec*)(*i))->uc_modes | MASK;
174 ((ucrec*)(*i))->channel->AddOppedUser(d);
177 ((ucrec*)(*i))->channel->AddHalfoppedUser(d);
180 ((ucrec*)(*i))->channel->AddVoicedUser(d);
183 log(DEBUG,"grant: %s %s",((ucrec*)(*i))->channel->name,d->nick);
190 char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
195 for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
197 if (((ucrec*)(*i))->channel == chan)
199 if ((((ucrec*)(*i))->uc_modes & MASK) == 0)
203 ((ucrec*)(*i))->uc_modes ^= MASK;
207 ((ucrec*)(*i))->channel->DelOppedUser(d);
210 ((ucrec*)(*i))->channel->DelHalfoppedUser(d);
213 ((ucrec*)(*i))->channel->DelVoicedUser(d);
216 log(DEBUG,"revoke: %s %s",((ucrec*)(*i))->channel->name,d->nick);
223 char* ModeParser::GiveOps(userrec *user,char *dest,chanrec *chan,int status)
225 userrec *d = this->SanityChecks(user,dest,chan,status);
232 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_OP));
234 if (MOD_RESULT == ACR_DENY)
236 if (MOD_RESULT == ACR_DEFAULT)
238 if ((status < STATUS_OP) && (!is_uline(user->server)))
240 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
246 return this->Grant(d,chan,UCMODE_OP);
251 char* ModeParser::GiveHops(userrec *user,char *dest,chanrec *chan,int status)
253 userrec *d = this->SanityChecks(user,dest,chan,status);
260 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_HALFOP));
262 if (MOD_RESULT == ACR_DENY)
264 if (MOD_RESULT == ACR_DEFAULT)
266 if ((status < STATUS_OP) && (!is_uline(user->server)))
268 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
274 return this->Grant(d,chan,UCMODE_HOP);
279 char* ModeParser::GiveVoice(userrec *user,char *dest,chanrec *chan,int status)
281 userrec *d = this->SanityChecks(user,dest,chan,status);
288 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_VOICE));
290 if (MOD_RESULT == ACR_DENY)
292 if (MOD_RESULT == ACR_DEFAULT)
294 if ((status < STATUS_HOP) && (!is_uline(user->server)))
296 WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
302 return this->Grant(d,chan,UCMODE_VOICE);
307 char* ModeParser::TakeOps(userrec *user,char *dest,chanrec *chan,int status)
309 userrec *d = this->SanityChecks(user,dest,chan,status);
316 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEOP));
318 if (MOD_RESULT == ACR_DENY)
320 if (MOD_RESULT == ACR_DEFAULT)
322 if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
324 WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
330 return this->Revoke(d,chan,UCMODE_OP);
335 char* ModeParser::TakeHops(userrec *user,char *dest,chanrec *chan,int status)
337 userrec *d = this->SanityChecks(user,dest,chan,status);
344 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEHALFOP));
346 if (MOD_RESULT == ACR_DENY)
348 if (MOD_RESULT == ACR_DEFAULT)
350 /* Tweak by Brain suggested by w00t, allow a halfop to dehalfop themselves */
351 if ((user != d) && ((status < STATUS_OP) && (!is_uline(user->server))))
353 WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
359 return this->Revoke(d,chan,UCMODE_HOP);
364 char* ModeParser::TakeVoice(userrec *user,char *dest,chanrec *chan,int status)
366 userrec *d = this->SanityChecks(user,dest,chan,status);
373 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEVOICE));
375 if (MOD_RESULT == ACR_DENY)
377 if (MOD_RESULT == ACR_DEFAULT)
379 if ((status < STATUS_HOP) && (!is_uline(user->server)))
381 WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
387 return this->Revoke(d,chan,UCMODE_VOICE);
392 void ModeParser::Process(char **parameters, int pcnt, userrec *user, bool servermode)
394 std::string target = parameters[0];
395 ModeType type = MODETYPE_USER;
396 unsigned char mask = 0;
397 chanrec* targetchannel = FindChan(parameters[0]);
398 userrec* targetuser = Find(parameters[0]);
400 log(DEBUG,"ModeParser::Process start");
406 log(DEBUG,"Target type is CHANNEL");
407 type = MODETYPE_CHANNEL;
412 log(DEBUG,"Target type is USER");
413 type = MODETYPE_USER;
418 /* No such nick/channel */
419 log(DEBUG,"Target type is UNKNOWN, bailing");
422 std::string mode_sequence = parameters[1];
423 std::string parameter = "";
424 std::ostringstream parameter_list;
425 std::string output_sequence = "";
426 bool adding = true, state_change = false;
428 int parameter_counter = 2; /* Index of first parameter */
430 for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
432 unsigned char modechar = *letter;
437 log(DEBUG,"Iterate mode letter %c",modechar);
440 * For + and - mode characters, we don't just stick the character into the output sequence.
441 * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
442 * appearing in the output sequence, we store a flag which says there was a state change,
443 * which is set on any + or -, however, the + or - that we finish on is only appended to
444 * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
447 /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
448 * however, will allow the + if it is the first item in the sequence, regardless.
450 if ((!adding) || (!output_sequence.length()))
456 if ((adding) || (!output_sequence.length()))
464 * Watch carefully for the sleight of hand trick.
465 * 65 is the ascii value of 'A'. We take this from
466 * the char we're looking at to get a number between
467 * 1 and 127. We then logic-or it to get the hashed
468 * position, dependent on wether its a channel or
469 * a user mode. This is a little stranger, but a lot
470 * faster, than using a map of pairs.
472 handler_id = (modechar - 65) | mask;
474 if (modehandlers[handler_id])
478 log(DEBUG,"Found a ModeHandler* for mode %c",modechar);
480 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
482 log(DEBUG,"Call a ModeWatcher*");
483 if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
486 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
488 log(DEBUG,"Modetype match, calling handler");
490 if (modehandlers[handler_id]->GetNumParams(adding))
492 log(DEBUG,"ModeHandler* for this mode says it has parameters. pcnt=%d parameter_counter=%d",pcnt,parameter_counter);
494 if (parameter_counter < pcnt)
496 parameter = parameters[parameter_counter++];
500 /* No parameter, continue to the next mode */
504 ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
506 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter == ""))
508 /* The handler nuked the parameter and they are supposed to have one.
509 * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
510 * so we bail to the next mode character.
515 if (ma == MODEACTION_ALLOW)
517 log(DEBUG,"ModeAction was allow");
519 /* We're about to output a valid mode letter - was there previously a pending state-change? */
522 log(DEBUG,"Appending state change");
523 output_sequence.append(adding ? "+" : "-");
526 /* Add the mode letter */
527 output_sequence.push_back(modechar);
528 log(DEBUG,"Added mode letter to output sequence, sequence now: '%s'",output_sequence.c_str());
530 /* Is there a valid parameter for this mode? If so add it to the parameter list */
531 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter != ""))
533 log(DEBUG,"Added parameter to parameter_list, list now: '%s'",parameter_list.str().c_str());
534 parameter_list << " " << parameter;
537 /* Call all the AfterMode events in the mode watchers for this mode */
538 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
540 log(DEBUG,"Called a ModeWatcher* after event");
541 (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
544 /* Reset the state change flag */
545 state_change = false;
552 /* Was there at least one valid mode in the sequence? */
553 if (output_sequence != "")
557 if (type == MODETYPE_CHANNEL)
559 WriteChannelWithServ(Config->ServerName,targetchannel,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
564 if (type == MODETYPE_CHANNEL)
566 log(DEBUG,"Write output sequence and parameters to channel: %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
567 WriteChannel(targetchannel,user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
568 FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
576 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
581 ServerInstance->ModeGrok->Process(parameters, pcnt, user, false);
586 void ModeParser::CleanMask(std::string &mask)
588 std::string::size_type pos_of_pling = mask.find_first_of('!');
589 std::string::size_type pos_of_at = mask.find_first_of('@');
590 std::string::size_type pos_of_dot = mask.find_first_of('.');
591 std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */
593 if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
595 /* Just a nick, or just a host */
596 if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))
598 /* It has no '.' in it, it must be a nick. */
603 /* Got a dot in it? Has to be a host */
604 mask = "*!*@" + mask;
607 else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
609 /* Has an @ but no !, its a user@host */
612 else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
614 /* Has a ! but no @, it must be a nick!ident */
619 bool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)
621 unsigned char mask = 0;
622 unsigned char pos = 0;
624 /* Yes, i know, this might let people declare modes like '_' or '^'.
625 * If they do that, thats their problem, and if i ever EVER see an
626 * official InspIRCd developer do that, i'll beat them with a paddle!
628 if ((modeletter < 'A') || (modeletter > 'z'))
631 mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
632 pos = (modeletter-65) | mask;
634 if (modehandlers[pos])
637 modehandlers[pos] = mh;
638 log(DEBUG,"ModeParser::AddMode: added mode %c",modeletter);
642 ModeParser::ModeParser()
644 /* Clear mode list */
645 memset(modehandlers, 0, sizeof(modehandlers));
646 memset(modewatchers, 0, sizeof(modewatchers));
648 /* Initialise the RFC mode letters */
649 this->AddMode(new ModeChannelSecret, 's');
650 this->AddMode(new ModeChannelPrivate, 'p');
651 this->AddMode(new ModeChannelBan, 'b');
652 this->AddMode(new ModeChannelModerated, 'm');
653 this->AddMode(new ModeChannelTopicOps, 't');
654 this->AddMode(new ModeChannelNoExternal, 'n');