src/mode.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *              <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *          the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include "inspircd.h"
  20 #include "users.h"
  21 #include "modules.h"
  22 #include "inspstring.h"
  23 #include "mode.h"
  24
  25 /* +s (secret) */
  26 #include "modes/cmode_s.h"
  27 /* +p (private) */
  28 #include "modes/cmode_p.h"
  29 /* +b (bans) */
  30 #include "modes/cmode_b.h"
  31 /* +m (moderated) */
  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"
  43 /* +o (channel op) */
  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"
  53 /* +i (invisible) */
  54 #include "modes/umode_i.h"
  55 /* +o (operator) */
  56 #include "modes/umode_o.h"
  57 /* +n (notice mask - our implementation of snomasks) */
  58 #include "modes/umode_n.h"
  59
  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)
  62 {
  63 }
  64
  65 ModeHandler::~ModeHandler()
  66 {
  67 }
  68
  69 bool ModeHandler::IsListMode()
  70 {
  71         return list;
  72 }
  73
  74 unsigned int ModeHandler::GetPrefixRank()
  75 {
  76         return 0;
  77 }
  78
  79 ModeType ModeHandler::GetModeType()
  80 {
  81         return m_type;
  82 }
  83
  84 bool ModeHandler::NeedsOper()
  85 {
  86         return oper;
  87 }
  88
  89 char ModeHandler::GetPrefix()
  90 {
  91         return prefix;
  92 }
  93
  94 int ModeHandler::GetNumParams(bool adding)
  95 {
  96         return adding ? n_params_on : n_params_off;
  97 }
  98
  99 char ModeHandler::GetModeChar()
 100 {
 101         return mode;
 102 }
 103
 104 ModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
 105 {
 106         return MODEACTION_DENY;
 107 }
 108
 109 ModePair ModeHandler::ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string &parameter)
 110 {
 111         if (dest)
 112         {
 113                 return std::make_pair(dest->IsModeSet(this->mode), "");
 114         }
 115         else
 116         {
 117                 return std::make_pair(channel->IsModeSet(this->mode), "");
 118         }
 119 }
 120
 121 void ModeHandler::DisplayList(userrec* user, chanrec* channel)
 122 {
 123 }
 124
 125 bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
 126 {
 127         return (ours < theirs);
 128 }
 129
 130 ModeWatcher::ModeWatcher(InspIRCd* Instance, char modeletter, ModeType type) : ServerInstance(Instance), mode(modeletter), m_type(type)
 131 {
 132 }
 133
 134 ModeWatcher::~ModeWatcher()
 135 {
 136 }
 137
 138 char ModeWatcher::GetModeChar()
 139 {
 140         return mode;
 141 }
 142
 143 ModeType ModeWatcher::GetModeType()
 144 {
 145         return m_type;
 146 }
 147
 148 bool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding, ModeType type)
 149 {
 150         return true;
 151 }
 152
 153 void ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string &parameter, bool adding, ModeType type)
 154 {
 155 }
 156
 157 userrec* ModeParser::SanityChecks(userrec *user,const char *dest,chanrec *chan,int status)
 158 {
 159         userrec *d;
 160         if ((!user) || (!dest) || (!chan) || (!*dest))
 161         {
 162                 return NULL;
 163         }
 164         d = ServerInstance->FindNick(dest);
 165         if (!d)
 166         {
 167                 user->WriteServ("401 %s %s :No such nick/channel",user->nick, dest);
 168                 return NULL;
 169         }
 170         return d;
 171 }
 172
 173 const char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
 174 {
 175         if (!chan)
 176                 return "";
 177
 178         for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
 179         {
 180                 ucrec* n = (ucrec*)(*i);
 181                 if (n->channel == chan)
 182                 {
 183                         if (n->uc_modes & MASK)
 184                         {
 185                                 return "";
 186                         }
 187                         n->uc_modes = n->uc_modes | MASK;
 188                         switch (MASK)
 189                         {
 190                                 case UCMODE_OP:
 191                                         n->channel->AddOppedUser(d);
 192                                 break;
 193                                 case UCMODE_HOP:
 194                                         n->channel->AddHalfoppedUser(d);
 195                                 break;
 196                                 case UCMODE_VOICE:
 197                                         n->channel->AddVoicedUser(d);
 198                                 break;
 199                         }
 200                         ServerInstance->Log(DEBUG,"grant: %s %s",n->channel->name,d->nick);
 201                         return d->nick;
 202                 }
 203         }
 204         return "";
 205 }
 206
 207 const char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
 208 {
 209         if (!chan)
 210                 return "";
 211
 212         for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
 213         {
 214                 ucrec* n = (ucrec*)(*i);
 215                 if (n->channel == chan)
 216                 {
 217                         if ((n->uc_modes & MASK) == 0)
 218                         {
 219                                 return "";
 220                         }
 221                         n->uc_modes ^= MASK;
 222                         switch (MASK)
 223                         {
 224                                 case UCMODE_OP:
 225                                         n->channel->DelOppedUser(d);
 226                                 break;
 227                                 case UCMODE_HOP:
 228                                         n->channel->DelHalfoppedUser(d);
 229                                 break;
 230                                 case UCMODE_VOICE:
 231                                         n->channel->DelVoicedUser(d);
 232                                 break;
 233                         }
 234                         ServerInstance->Log(DEBUG,"revoke: %s %s",n->channel->name,d->nick);
 235                         return d->nick;
 236                 }
 237         }
 238         return "";
 239 }
 240
 241 void ModeParser::DisplayCurrentModes(userrec *user, userrec* targetuser, chanrec* targetchannel, const char* text)
 242 {
 243         if (targetchannel)
 244         {
 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);
 248                 return;
 249         }
 250         else if (targetuser)
 251         {
 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());
 256                 return;
 257         }
 258
 259         /* No such nick/channel */
 260         user->WriteServ("401 %s %s :No such nick/channel",user->nick, text);
 261         return;
 262 }
 263
 264 void ModeParser::Process(const char** parameters, int pcnt, userrec *user, bool servermode)
 265 {
 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]);
 271
 272         ServerInstance->Log(DEBUG,"ModeParser::Process start");
 273
 274         LastParse = "";
 275
 276         /* Special case for displaying the list for listmodes,
 277          * e.g. MODE #chan b, or MODE #chan +b without a parameter
 278          */
 279         if ((targetchannel) && (pcnt == 2))
 280         {
 281                 ServerInstance->Log(DEBUG,"Spool list");
 282                 const char* mode = parameters[1];
 283                 if (*mode == '+')
 284                         mode++;
 285                 unsigned char handler_id = ((*mode) - 65) | MASK_CHANNEL;
 286                 ModeHandler* mh = modehandlers[handler_id];
 287                 if ((mh) && (mh->IsListMode()))
 288                 {
 289                         mh->DisplayList(user, targetchannel);
 290                         return;
 291                 }
 292         }
 293
 294         if (pcnt == 1)
 295         {
 296                 ServerInstance->Log(DEBUG,"Mode list request");
 297                 this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);
 298         }
 299         else if (pcnt > 1)
 300         {
 301                 ServerInstance->Log(DEBUG,"More than one parameter");
 302
 303                 if (targetchannel)
 304                 {
 305                         type = MODETYPE_CHANNEL;
 306                         mask = MASK_CHANNEL;
 307
 308                         /* Extra security checks on channel modes
 309                          * (e.g. are they a (half)op?
 310                          */
 311
 312                         if ((IS_LOCAL(user)) && (targetchannel->GetStatus(user) < STATUS_HOP))
 313                         {
 314                                 /* We don't have halfop */
 315                                 ServerInstance->Log(DEBUG,"The user is not a halfop or above, checking other reasons for being able to set the modes");
 316
 317                                 int MOD_RESULT = 0;
 318                                 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, targetchannel, AC_GENERAL_MODE));
 319                                 if (MOD_RESULT == ACR_DENY)
 320                                         return;
 321
 322                                 if (MOD_RESULT == ACR_DEFAULT)
 323                                 {
 324                                         /* Are we a uline or is it a servermode? */
 325                                         if ((!ServerInstance->ULine(user->server)) && (!servermode))
 326                                         {
 327                                                 /* Not enough permission:
 328                                                  * NOT a uline and NOT a servermode,
 329                                                  * OR, NOT halfop or above.
 330                                                  */
 331                                                 user->WriteServ("482 %s %s :You're not a channel (half)operator",user->nick, targetchannel->name);
 332                                                 return;
 333                                         }
 334                                 }
 335                         }
 336                 }
 337                 else if (targetuser)
 338                 {
 339                         type = MODETYPE_USER;
 340                         mask = MASK_USER;
 341                 }
 342                 else
 343                 {
 344                         /* No such nick/channel */
 345                         user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[0]);
 346                         return;
 347                 }
 348
 349                 std::string mode_sequence = parameters[1];
 350                 std::string parameter = "";
 351                 std::ostringstream parameter_list;
 352                 std::string output_sequence = "";
 353                 bool adding = true, state_change = false;
 354                 unsigned char handler_id = 0;
 355                 int parameter_counter = 2; /* Index of first parameter */
 356                 int parameter_count = 0;
 357
 358                 /* A mode sequence that doesnt start with + or -. Assume +. - Thanks for the suggestion spike (bug#132) */
 359                 if ((*mode_sequence.begin() != '+') && (*mode_sequence.begin() != '-'))
 360                         mode_sequence.insert(0, "+");
 361
 362                 for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
 363                 {
 364                         unsigned char modechar = *letter;
 365
 366                         ServerInstance->Log(DEBUG,"Process letter %c", modechar);
 367
 368                         switch (modechar)
 369                         {
 370                                 /* NB:
 371                                  * For + and - mode characters, we don't just stick the character into the output sequence.
 372                                  * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
 373                                  * appearing in the output sequence, we store a flag which says there was a state change,
 374                                  * which is set on any + or -, however, the + or - that we finish on is only appended to
 375                                  * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
 376                                  */
 377                                 case '+':
 378                                         /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
 379                                          * however, will allow the + if it is the first item in the sequence, regardless.
 380                                          */
 381                                         if ((!adding) || (!output_sequence.length()))
 382                                                 state_change = true;
 383                                         adding = true;
 384                                         continue;
 385                                 break;
 386                                 case '-':
 387                                         if ((adding) || (!output_sequence.length()))
 388                                                 state_change = true;
 389                                         adding = false;
 390                                         continue;
 391                                 break;
 392                                 default:
 393
 394                                         /**
 395                                          * Watch carefully for the sleight of hand trick.
 396                                          * 65 is the ascii value of 'A'. We take this from
 397                                          * the char we're looking at to get a number between
 398                                          * 1 and 127. We then logic-or it to get the hashed
 399                                          * position, dependent on wether its a channel or
 400                                          * a user mode. This is a little stranger, but a lot
 401                                          * faster, than using a map of pairs.
 402                                          */
 403                                         handler_id = (modechar - 65) | mask;
 404
 405                                         if (modehandlers[handler_id])
 406                                         {
 407                                                 bool abort = false;
 408
 409                                                 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
 410                                                 {
 411                                                         if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
 412                                                                 abort = true;
 413                                                 }
 414                                                 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
 415                                                 {
 416                                                         if (modehandlers[handler_id]->GetNumParams(adding))
 417                                                         {
 418                                                                 /* This mode expects a parameter, do we have any parameters left in our list to use? */
 419                                                                 if (parameter_counter < pcnt)
 420                                                                 {
 421                                                                         parameter = parameters[parameter_counter++];
 422
 423                                                                         /* Yerk, invalid! */
 424                                                                         if ((parameter.find(':') == 0) || (parameter.rfind(' ') != std::string::npos))
 425                                                                                 parameter = "";
 426                                                                 }
 427                                                                 else
 428                                                                 {
 429                                                                         /* No parameter, continue to the next mode */
 430                                                                         continue;
 431                                                                 }
 432                                                         }
 433
 434                                                         /* It's an oper only mode, check if theyre an oper. If they arent,
 435                                                          * eat any parameter that  came with the mode, and continue to next
 436                                                          */
 437                                                         if ((IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!*user->oper))
 438                                                         {
 439                                                                 user->WriteServ("481 %s :Permission Denied- Only IRC operators may %sset %s mode %c", user->nick,
 440                                                                                 adding ? "" : "un", type == MODETYPE_CHANNEL ? "channel" : "user",
 441                                                                                 modehandlers[handler_id]->GetModeChar());
 442                                                                 continue;
 443                                                         }
 444
 445                                                         /* Call the handler for the mode */
 446                                                         ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
 447
 448                                                         if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter == ""))
 449                                                         {
 450                                                                 /* The handler nuked the parameter and they are supposed to have one.
 451                                                                  * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
 452                                                                  * so we bail to the next mode character.
 453                                                                  */
 454                                                                 continue;
 455                                                         }
 456
 457                                                         if (ma == MODEACTION_ALLOW)
 458                                                         {
 459                                                                 /* We're about to output a valid mode letter - was there previously a pending state-change? */
 460                                                                 if (state_change)
 461                                                                         output_sequence.append(adding ? "+" : "-");
 462
 463                                                                 /* Add the mode letter */
 464                                                                 output_sequence.push_back(modechar);
 465
 466                                                                 /* Is there a valid parameter for this mode? If so add it to the parameter list */
 467                                                                 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter != ""))
 468                                                                 {
 469                                                                         parameter_list << " " << parameter;
 470                                                                         parameter_count++;
 471                                                                         /* Does this mode have a prefix? */
 472                                                                         if (modehandlers[handler_id]->GetPrefix() && targetchannel)
 473                                                                         {
 474                                                                                 userrec* user_to_prefix = ServerInstance->FindNick(parameter);
 475                                                                                 if (user_to_prefix)
 476                                                                                         targetchannel->SetPrefix(user_to_prefix, modehandlers[handler_id]->GetPrefix(),
 477                                                                                                         modehandlers[handler_id]->GetPrefixRank(), adding);
 478                                                                         }
 479                                                                 }
 480
 481                                                                 /* Call all the AfterMode events in the mode watchers for this mode */
 482                                                                 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
 483                                                                         (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
 484
 485                                                                 /* Reset the state change flag */
 486                                                                 state_change = false;
 487
 488                                                                 if ((output_sequence.length() + parameter_list.str().length() > 450) || (output_sequence.length() > 100)
 489                                                                                 || (parameter_count > MAXMODES))
 490                                                                 {
 491                                                                         /* We cant have a mode sequence this long */
 492                                                                         letter = mode_sequence.end() - 1;
 493                                                                         continue;
 494                                                                 }
 495                                                         }
 496                                                 }
 497                                         }
 498                                         else
 499                                         {
 500                                                 /* No mode handler? Unknown mode character then. */
 501                                                 user->WriteServ("472 %s %c :is unknown mode char to me",user->nick, modechar);
 502                                         }
 503                                 break;
 504                         }
 505                 }
 506                 /* Was there at least one valid mode in the sequence? */
 507                 if (output_sequence != "")
 508                 {
 509                         if (servermode)
 510                         {
 511                                 if (type == MODETYPE_CHANNEL)
 512                                 {
 513                                         targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s %s%s", targetchannel->name, output_sequence.c_str(), parameter_list.str().c_str());
 514                                         this->LastParse = targetchannel->name;
 515                                 }
 516                                 else
 517                                 {
 518                                         targetuser->WriteServ("MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());
 519                                         this->LastParse = targetuser->nick;
 520                                 }
 521                         }
 522                         else
 523                         {
 524                                 if (type == MODETYPE_CHANNEL)
 525                                 {
 526                                         ServerInstance->Log(DEBUG,"Write output sequence and parameters to channel: %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
 527                                         targetchannel->WriteChannel(user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
 528                                         FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
 529                                         this->LastParse = targetchannel->name;
 530                                 }
 531                                 else
 532                                 {
 533                                         user->WriteTo(targetuser,"MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());
 534                                         FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence));
 535                                         this->LastParse = targetuser->nick;
 536                                 }
 537                         }
 538
 539                         LastParse.append(" ");
 540                         LastParse.append(output_sequence);
 541                         LastParse.append(parameter_list.str());
 542                 }
 543         }
 544 }
 545
 546 const std::string& ModeParser::GetLastParse()
 547 {
 548         return LastParse;
 549 }
 550
 551 void ModeParser::CleanMask(std::string &mask)
 552 {
 553         std::string::size_type pos_of_pling = mask.find_first_of('!');
 554         std::string::size_type pos_of_at = mask.find_first_of('@');
 555         std::string::size_type pos_of_dot = mask.find_first_of('.');
 556         std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */
 557
 558         if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
 559         {
 560                 /* Just a nick, or just a host */
 561                 if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))
 562                 {
 563                         /* It has no '.' in it, it must be a nick. */
 564                         mask.append("!*@*");
 565                 }
 566                 else
 567                 {
 568                         /* Got a dot in it? Has to be a host */
 569                         mask = "*!*@" + mask;
 570                 }
 571         }
 572         else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
 573         {
 574                 /* Has an @ but no !, its a user@host */
 575                  mask = "*!" + mask;
 576         }
 577         else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
 578         {
 579                 /* Has a ! but no @, it must be a nick!ident */
 580                 mask.append("@*");
 581         }
 582 }
 583
 584 bool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)
 585 {
 586         unsigned char mask = 0;
 587         unsigned char pos = 0;
 588
 589         /* Yes, i know, this might let people declare modes like '_' or '^'.
 590          * If they do that, thats their problem, and if i ever EVER see an
 591          * official InspIRCd developer do that, i'll beat them with a paddle!
 592          */
 593         if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z'))
 594                 return false;
 595
 596         /* A mode prefix of ',' is not acceptable, it would fuck up server to server.
 597          * A mode prefix of ':' will fuck up both server to server, and client to server.
 598          */
 599         if ((mh->GetPrefix() == ',') || (mh->GetPrefix() == ':'))
 600                 return false;
 601
 602         mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 603         pos = (mh->GetModeChar()-65) | mask;
 604
 605         if (modehandlers[pos])
 606                 return false;
 607
 608         modehandlers[pos] = mh;
 609         ServerInstance->Log(DEBUG,"ModeParser::AddMode: added mode %c",mh->GetModeChar());
 610         return true;
 611 }
 612
 613 bool ModeParser::DelMode(ModeHandler* mh)
 614 {
 615         unsigned char mask = 0;
 616         unsigned char pos = 0;
 617
 618         if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z'))
 619                 return false;
 620
 621         mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 622         pos = (mh->GetModeChar()-65) | mask;
 623
 624         if (!modehandlers[pos])
 625                 return false;
 626
 627         switch (mh->GetModeType())
 628         {
 629                 case MODETYPE_USER:
 630                         for (user_hash::iterator i = ServerInstance->clientlist.begin(); i != ServerInstance->clientlist.end(); i++)
 631                         {
 632                                 mh->RemoveMode(i->second);
 633                         }
 634                 break;
 635                 case MODETYPE_CHANNEL:
 636                         for (chan_hash::iterator i = ServerInstance->chanlist.begin(); i != ServerInstance->chanlist.end(); i++)
 637                         {
 638                                 mh->RemoveMode(i->second);
 639                         }
 640                 break;
 641         }
 642
 643         modehandlers[pos] = NULL;
 644
 645         return true;
 646 }
 647
 648 ModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt)
 649 {
 650         unsigned char mask = 0;
 651         unsigned char pos = 0;
 652
 653         if ((modeletter < 'A') || (modeletter > 'z'))
 654                 return NULL;
 655
 656         mt == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 657         pos = (modeletter-65) | mask;
 658
 659         return modehandlers[pos];
 660 }
 661
 662 std::string ModeParser::UserModeList()
 663 {
 664         char modestr[256];
 665         int pointer = 0;
 666
 667         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 668         {
 669                 unsigned char pos = (mode-65) | MASK_USER;
 670
 671                 if (modehandlers[pos])
 672                         modestr[pointer++] = mode;
 673         }
 674         modestr[pointer++] = 0;
 675         return modestr;
 676 }
 677
 678 std::string ModeParser::ChannelModeList()
 679 {
 680         char modestr[256];
 681         int pointer = 0;
 682
 683         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 684         {
 685                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 686
 687                 if (modehandlers[pos])
 688                         modestr[pointer++] = mode;
 689         }
 690         modestr[pointer++] = 0;
 691         return modestr;
 692 }
 693
 694 std::string ModeParser::ParaModeList()
 695 {
 696         char modestr[256];
 697         int pointer = 0;
 698
 699         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 700         {
 701                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 702
 703                 if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true)))
 704                         modestr[pointer++] = mode;
 705         }
 706         modestr[pointer++] = 0;
 707         return modestr;
 708 }
 709
 710 ModeHandler* ModeParser::FindPrefix(unsigned const char pfxletter)
 711 {
 712         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 713         {
 714                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 715
 716                 if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix() == pfxletter))
 717                 {
 718                         return modehandlers[pos];
 719                 }
 720         }
 721         return NULL;
 722 }
 723
 724 std::string ModeParser::ModeString(userrec* user, chanrec* channel)
 725 {
 726         std::string types;
 727         std::string pars;
 728
 729         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 730         {
 731                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 732                 ModeHandler* mh = modehandlers[pos];
 733                 if ((mh) && (mh->GetNumParams(true)) && (mh->GetNumParams(false)))
 734                 {
 735                         ModePair ret;
 736                         ret = mh->ModeSet(NULL, user, channel, user->nick);
 737                         if ((ret.first) && (ret.second == user->nick))
 738                         {
 739                                 pars.append(" ");
 740                                 pars.append(user->nick);
 741                                 types.push_back(mh->GetModeChar());
 742                         }
 743                 }
 744         }
 745
 746         return types+pars;
 747 }
 748
 749 std::string ModeParser::ChanModes()
 750 {
 751         std::string type1;      /* Listmodes EXCEPT those with a prefix */
 752         std::string type2;      /* Modes that take a param when adding or removing */
 753         std::string type3;      /* Modes that only take a param when adding */
 754         std::string type4;      /* Modes that dont take a param */
 755
 756         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 757         {
 758                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 759                  /* One parameter when adding */
 760                 if (modehandlers[pos])
 761                 {
 762                         if (modehandlers[pos]->GetNumParams(true))
 763                         {
 764                                 if ((modehandlers[pos]->IsListMode()) && (!modehandlers[pos]->GetPrefix()))
 765                                 {
 766                                         type1 += modehandlers[pos]->GetModeChar();
 767                                 }
 768                                 else
 769                                 {
 770                                         /* ... and one parameter when removing */
 771                                         if (modehandlers[pos]->GetNumParams(false))
 772                                         {
 773                                                 /* But not a list mode */
 774                                                 if (!modehandlers[pos]->GetPrefix())
 775                                                 {
 776                                                         type2 += modehandlers[pos]->GetModeChar();
 777                                                 }
 778                                         }
 779                                         else
 780                                         {
 781                                                 /* No parameters when removing */
 782                                                 type3 += modehandlers[pos]->GetModeChar();
 783                                         }
 784                                 }
 785                         }
 786                         else
 787                         {
 788                                 type4 += modehandlers[pos]->GetModeChar();
 789                         }
 790                 }
 791
 792         }
 793
 794         return type1 + "," + type2 + "," + type3 + "," + type4;
 795 }
 796
 797 bool ModeParser::PrefixComparison(const prefixtype one, const prefixtype two)
 798 {
 799         return one.second > two.second;
 800 }
 801
 802 std::string ModeParser::BuildPrefixes()
 803 {
 804         std::string mletters = "";
 805         std::string mprefixes = "";
 806         pfxcontainer pfx;
 807         std::map<char,char> prefix_to_mode;
 808
 809         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 810         {
 811                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 812
 813                 if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix()))
 814                 {
 815                         pfx.push_back(std::make_pair<char,unsigned int>(modehandlers[pos]->GetPrefix(), modehandlers[pos]->GetPrefixRank()));
 816                         prefix_to_mode[modehandlers[pos]->GetPrefix()] = modehandlers[pos]->GetModeChar();
 817                 }
 818         }
 819
 820         sort(pfx.begin(), pfx.end(), ModeParser::PrefixComparison);
 821
 822         for (pfxcontainer::iterator n = pfx.begin(); n != pfx.end(); n++)
 823         {
 824                 mletters = mletters + n->first;
 825                 mprefixes = mprefixes + prefix_to_mode.find(n->first)->second;
 826         }
 827
 828         return "(" + mprefixes + ")" + mletters;
 829 }
 830
 831 bool ModeParser::AddModeWatcher(ModeWatcher* mw)
 832 {
 833         unsigned char mask = 0;
 834         unsigned char pos = 0;
 835
 836         if (!mw)
 837                 return false;
 838
 839         if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
 840                 return false;
 841
 842         mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 843         pos = (mw->GetModeChar()-65) | mask;
 844
 845         modewatchers[pos].push_back(mw);
 846         ServerInstance->Log(DEBUG,"ModeParser::AddModeWatcher: watching mode %c",mw->GetModeChar());
 847
 848         return true;
 849 }
 850
 851 bool ModeParser::DelModeWatcher(ModeWatcher* mw)
 852 {
 853         unsigned char mask = 0;
 854         unsigned char pos = 0;
 855
 856         if (!mw)
 857                 return false;
 858
 859         if ((mw->GetModeType() < 'A') || (mw->GetModeType() > 'z'))
 860                 return false;
 861
 862         mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 863         pos = (mw->GetModeChar()-65) | mask;
 864
 865         ModeWatchIter a = find(modewatchers[pos].begin(),modewatchers[pos].end(),mw);
 866
 867         if (a == modewatchers[pos].end())
 868                 return false;
 869
 870         modewatchers[pos].erase(a);
 871         ServerInstance->Log(DEBUG,"ModeParser::DelModeWatcher: stopped watching mode %c",mw->GetModeChar());
 872
 873         return true;
 874 }
 875
 876 /** This default implementation can remove simple user modes
 877  */
 878 void ModeHandler::RemoveMode(userrec* user)
 879 {
 880         char moderemove[MAXBUF];
 881         const char* parameters[] = { user->nick, moderemove };
 882
 883         if (user->IsModeSet(this->GetModeChar()))
 884         {
 885                 userrec* n = new userrec(ServerInstance);
 886
 887                 sprintf(moderemove,"-%c",this->GetModeChar());
 888                 n->SetFd(FD_MAGIC_NUMBER);
 889
 890                 ServerInstance->SendMode(parameters, 2, n);
 891
 892                 delete n;
 893         }
 894 }
 895
 896 /** This default implementation can remove simple channel modes
 897  * (no parameters)
 898  */
 899 void ModeHandler::RemoveMode(chanrec* channel)
 900 {
 901         char moderemove[MAXBUF];
 902         const char* parameters[] = { channel->name, moderemove };
 903
 904         if (channel->IsModeSet(this->GetModeChar()))
 905         {
 906                 userrec* n = new userrec(ServerInstance);
 907
 908                 sprintf(moderemove,"-%c",this->GetModeChar());
 909                 n->SetFd(FD_MAGIC_NUMBER);
 910
 911                 ServerInstance->SendMode(parameters, 2, n);
 912
 913                 delete n;
 914         }
 915 }
 916
 917 ModeParser::ModeParser(InspIRCd* Instance) : ServerInstance(Instance)
 918 {
 919         /* Clear mode list */
 920         memset(modehandlers, 0, sizeof(modehandlers));
 921         memset(modewatchers, 0, sizeof(modewatchers));
 922
 923         /* Last parse string */
 924         LastParse = "";
 925
 926         /* Initialise the RFC mode letters */
 927
 928         /* Start with channel simple modes, no params */
 929         this->AddMode(new ModeChannelSecret(Instance), 's');
 930         this->AddMode(new ModeChannelPrivate(Instance), 'p');
 931         this->AddMode(new ModeChannelModerated(Instance), 'm');
 932         this->AddMode(new ModeChannelTopicOps(Instance), 't');
 933         this->AddMode(new ModeChannelNoExternal(Instance), 'n');
 934         this->AddMode(new ModeChannelInviteOnly(Instance), 'i');
 935
 936         /* Cannel modes with params */
 937         this->AddMode(new ModeChannelKey(Instance), 'k');
 938         this->AddMode(new ModeChannelLimit(Instance), 'l');
 939
 940         /* Channel listmodes */
 941         this->AddMode(new ModeChannelBan(Instance), 'b');
 942         this->AddMode(new ModeChannelOp(Instance), 'o');
 943         this->AddMode(new ModeChannelHalfOp(Instance), 'h');
 944         this->AddMode(new ModeChannelVoice(Instance), 'v');
 945
 946         /* Now for usermodes */
 947         this->AddMode(new ModeUserServerNotice(Instance), 's');
 948         this->AddMode(new ModeUserWallops(Instance), 'w');
 949         this->AddMode(new ModeUserInvisible(Instance), 'i');
 950         this->AddMode(new ModeUserOperator(Instance), 'o');
 951         this->AddMode(new ModeUserServerNoticeMask(Instance), 'n');
 952 }
 953