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_config.h"
  20 #include "inspircd.h"
  21 #include "configreader.h"
  22 #include <unistd.h>
  23 #include "hash_map.h"
  24 #include "connection.h"
  25 #include "users.h"
  26 #include "modules.h"
  27 #include "inspstring.h"
  28
  29 #include "commands.h"
  30 #include "mode.h"
  31
  32 /* +s (secret) */
  33 #include "modes/cmode_s.h"
  34 /* +p (private) */
  35 #include "modes/cmode_p.h"
  36 /* +b (bans) */
  37 #include "modes/cmode_b.h"
  38 /* +m (moderated) */
  39 #include "modes/cmode_m.h"
  40 /* +t (only (half) ops can change topic) */
  41 #include "modes/cmode_t.h"
  42 /* +n (no external messages) */
  43 #include "modes/cmode_n.h"
  44 /* +i (invite only) */
  45 #include "modes/cmode_i.h"
  46 /* +k (keyed channel) */
  47 #include "modes/cmode_k.h"
  48 /* +l (channel user limit) */
  49 #include "modes/cmode_l.h"
  50 /* +o (channel op) */
  51 #include "modes/cmode_o.h"
  52 /* +h (channel halfop) */
  53 #include "modes/cmode_h.h"
  54 /* +v (channel voice) */
  55 #include "modes/cmode_v.h"
  56
  57 /* +s (server notices) */
  58 #include "modes/umode_s.h"
  59 /* +w (see wallops) */
  60 #include "modes/umode_w.h"
  61 /* +i (invisible) */
  62 #include "modes/umode_i.h"
  63 /* +o (operator) */
  64 #include "modes/umode_o.h"
  65 /* +n (notice mask - our implementation of snomasks) */
  66 #include "modes/umode_n.h"
  67
  68 ModeHandler::ModeHandler(InspIRCd* Instance, char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly, char mprefix)
  69         : ServerInstance(Instance), mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly), prefix(mprefix)
  70 {
  71 }
  72
  73 ModeHandler::~ModeHandler()
  74 {
  75 }
  76
  77 bool ModeHandler::IsListMode()
  78 {
  79         return list;
  80 }
  81
  82 unsigned int ModeHandler::GetPrefixRank()
  83 {
  84         return 0;
  85 }
  86
  87 ModeType ModeHandler::GetModeType()
  88 {
  89         return m_type;
  90 }
  91
  92 bool ModeHandler::NeedsOper()
  93 {
  94         return oper;
  95 }
  96
  97 char ModeHandler::GetPrefix()
  98 {
  99         return prefix;
 100 }
 101
 102 int ModeHandler::GetNumParams(bool adding)
 103 {
 104         return adding ? n_params_on : n_params_off;
 105 }
 106
 107 char ModeHandler::GetModeChar()
 108 {
 109         return mode;
 110 }
 111
 112 ModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
 113 {
 114         return MODEACTION_DENY;
 115 }
 116
 117 ModePair ModeHandler::ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string &parameter)
 118 {
 119         if (dest)
 120         {
 121                 return std::make_pair(dest->IsModeSet(this->mode), "");
 122         }
 123         else
 124         {
 125                 return std::make_pair(channel->IsModeSet(this->mode), "");
 126         }
 127 }
 128
 129 void ModeHandler::DisplayList(userrec* user, chanrec* channel)
 130 {
 131 }
 132
 133 bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
 134 {
 135         return (ours < theirs);
 136 }
 137
 138 ModeWatcher::ModeWatcher(InspIRCd* Instance, char modeletter, ModeType type) : ServerInstance(Instance), mode(modeletter), m_type(type)
 139 {
 140 }
 141
 142 ModeWatcher::~ModeWatcher()
 143 {
 144 }
 145
 146 char ModeWatcher::GetModeChar()
 147 {
 148         return mode;
 149 }
 150
 151 ModeType ModeWatcher::GetModeType()
 152 {
 153         return m_type;
 154 }
 155
 156 bool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding, ModeType type)
 157 {
 158         return true;
 159 }
 160
 161 void ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string &parameter, bool adding, ModeType type)
 162 {
 163 }
 164
 165 userrec* ModeParser::SanityChecks(userrec *user,const char *dest,chanrec *chan,int status)
 166 {
 167         userrec *d;
 168         if ((!user) || (!dest) || (!chan) || (!*dest))
 169         {
 170                 return NULL;
 171         }
 172         d = ServerInstance->FindNick(dest);
 173         if (!d)
 174         {
 175                 user->WriteServ("401 %s %s :No such nick/channel",user->nick, dest);
 176                 return NULL;
 177         }
 178         return d;
 179 }
 180
 181 const char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
 182 {
 183         if (!chan)
 184                 return "";
 185
 186         for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
 187         {
 188                 ucrec* n = (ucrec*)(*i);
 189                 if (n->channel == chan)
 190                 {
 191                         if (n->uc_modes & MASK)
 192                         {
 193                                 return "";
 194                         }
 195                         n->uc_modes = n->uc_modes | MASK;
 196                         switch (MASK)
 197                         {
 198                                 case UCMODE_OP:
 199                                         n->channel->AddOppedUser(d);
 200                                 break;
 201                                 case UCMODE_HOP:
 202                                         n->channel->AddHalfoppedUser(d);
 203                                 break;
 204                                 case UCMODE_VOICE:
 205                                         n->channel->AddVoicedUser(d);
 206                                 break;
 207                         }
 208                         ServerInstance->Log(DEBUG,"grant: %s %s",n->channel->name,d->nick);
 209                         return d->nick;
 210                 }
 211         }
 212         return "";
 213 }
 214
 215 const char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
 216 {
 217         if (!chan)
 218                 return "";
 219
 220         for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
 221         {
 222                 ucrec* n = (ucrec*)(*i);
 223                 if (n->channel == chan)
 224                 {
 225                         if ((n->uc_modes & MASK) == 0)
 226                         {
 227                                 return "";
 228                         }
 229                         n->uc_modes ^= MASK;
 230                         switch (MASK)
 231                         {
 232                                 case UCMODE_OP:
 233                                         n->channel->DelOppedUser(d);
 234                                 break;
 235                                 case UCMODE_HOP:
 236                                         n->channel->DelHalfoppedUser(d);
 237                                 break;
 238                                 case UCMODE_VOICE:
 239                                         n->channel->DelVoicedUser(d);
 240                                 break;
 241                         }
 242                         ServerInstance->Log(DEBUG,"revoke: %s %s",n->channel->name,d->nick);
 243                         return d->nick;
 244                 }
 245         }
 246         return "";
 247 }
 248
 249 void ModeParser::DisplayCurrentModes(userrec *user, userrec* targetuser, chanrec* targetchannel, const char* text)
 250 {
 251         if (targetchannel)
 252         {
 253                 /* Display channel's current mode string */
 254                 user->WriteServ("324 %s %s +%s",user->nick, targetchannel->name, targetchannel->ChanModes(targetchannel->HasUser(user)));
 255                 user->WriteServ("329 %s %s %d", user->nick, targetchannel->name, targetchannel->created);
 256                 return;
 257         }
 258         else if (targetuser)
 259         {
 260                 /* Display user's current mode string */
 261                 user->WriteServ("221 %s :+%s",targetuser->nick,targetuser->FormatModes());
 262                 user->WriteServ("008 %s :+%s", targetuser->nick, targetuser->FormatNoticeMasks());
 263                 return;
 264         }
 265
 266         /* No such nick/channel */
 267         user->WriteServ("401 %s %s :No such nick/channel",user->nick, text);
 268         return;
 269 }
 270
 271 void ModeParser::Process(const char** parameters, int pcnt, userrec *user, bool servermode)
 272 {
 273         std::string target = parameters[0];
 274         ModeType type = MODETYPE_USER;
 275         unsigned char mask = 0;
 276         chanrec* targetchannel = ServerInstance->FindChan(parameters[0]);
 277         userrec* targetuser  = ServerInstance->FindNick(parameters[0]);
 278
 279         ServerInstance->Log(DEBUG,"ModeParser::Process start");
 280
 281         /* Special case for displaying the list for listmodes,
 282          * e.g. MODE #chan b, or MODE #chan +b without a parameter
 283          */
 284         if ((targetchannel) && (pcnt == 2))
 285         {
 286                 ServerInstance->Log(DEBUG,"Spool list");
 287                 const char* mode = parameters[1];
 288                 if (*mode == '+')
 289                         mode++;
 290                 unsigned char handler_id = ((*mode) - 65) | MASK_CHANNEL;
 291                 ModeHandler* mh = modehandlers[handler_id];
 292                 if ((mh) && (mh->IsListMode()))
 293                 {
 294                         mh->DisplayList(user, targetchannel);
 295                         return;
 296                 }
 297         }
 298
 299         if (pcnt == 1)
 300         {
 301                 ServerInstance->Log(DEBUG,"Mode list request");
 302                 this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);
 303         }
 304         else if (pcnt > 1)
 305         {
 306                 ServerInstance->Log(DEBUG,"More than one parameter");
 307
 308                 if (targetchannel)
 309                 {
 310                         type = MODETYPE_CHANNEL;
 311                         mask = MASK_CHANNEL;
 312
 313                         /* Extra security checks on channel modes
 314                          * (e.g. are they a (half)op?
 315                          */
 316
 317                         if ((IS_LOCAL(user)) && (targetchannel->GetStatus(user) < STATUS_HOP))
 318                         {
 319                                 /* We don't have halfop */
 320                                 ServerInstance->Log(DEBUG,"The user is not a halfop or above, checking other reasons for being able to set the modes");
 321
 322                                 /* Are we a uline or is it a servermode? */
 323                                 if ((!ServerInstance->ULine(user->server)) && (!servermode))
 324                                 {
 325                                         /* Not enough permission:
 326                                          * NOT a uline and NOT a servermode,
 327                                          * OR, NOT halfop or above.
 328                                          */
 329                                         user->WriteServ("482 %s %s :You're not a channel (half)operator",user->nick, targetchannel->name);
 330                                         return;
 331                                 }
 332                         }
 333                 }
 334                 else if (targetuser)
 335                 {
 336                         type = MODETYPE_USER;
 337                         mask = MASK_USER;
 338                 }
 339                 else
 340                 {
 341                         /* No such nick/channel */
 342                         user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[0]);
 343                         return;
 344                 }
 345
 346                 std::string mode_sequence = parameters[1];
 347                 std::string parameter = "";
 348                 std::ostringstream parameter_list;
 349                 std::string output_sequence = "";
 350                 bool adding = true, state_change = false;
 351                 unsigned char handler_id = 0;
 352                 int parameter_counter = 2; /* Index of first parameter */
 353
 354                 /* A mode sequence that doesnt start with + or -. Assume +. - Thanks for the suggestion spike (bug#132) */
 355                 if ((*mode_sequence.begin() != '+') && (*mode_sequence.begin() != '-'))
 356                         mode_sequence.insert(0, "+");
 357
 358                 for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
 359                 {
 360                         unsigned char modechar = *letter;
 361
 362                         ServerInstance->Log(DEBUG,"Process letter %c", modechar);
 363
 364                         switch (modechar)
 365                         {
 366                                 /* NB:
 367                                  * For + and - mode characters, we don't just stick the character into the output sequence.
 368                                  * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
 369                                  * appearing in the output sequence, we store a flag which says there was a state change,
 370                                  * which is set on any + or -, however, the + or - that we finish on is only appended to
 371                                  * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
 372                                  */
 373                                 case '+':
 374                                         /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
 375                                          * however, will allow the + if it is the first item in the sequence, regardless.
 376                                          */
 377                                         if ((!adding) || (!output_sequence.length()))
 378                                                 state_change = true;
 379                                         adding = true;
 380                                         continue;
 381                                 break;
 382                                 case '-':
 383                                         if ((adding) || (!output_sequence.length()))
 384                                                 state_change = true;
 385                                         adding = false;
 386                                         continue;
 387                                 break;
 388                                 default:
 389
 390                                         /**
 391                                          * Watch carefully for the sleight of hand trick.
 392                                          * 65 is the ascii value of 'A'. We take this from
 393                                          * the char we're looking at to get a number between
 394                                          * 1 and 127. We then logic-or it to get the hashed
 395                                          * position, dependent on wether its a channel or
 396                                          * a user mode. This is a little stranger, but a lot
 397                                          * faster, than using a map of pairs.
 398                                          */
 399                                         handler_id = (modechar - 65) | mask;
 400
 401                                         if (modehandlers[handler_id])
 402                                         {
 403                                                 bool abort = false;
 404
 405                                                 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
 406                                                 {
 407                                                         if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
 408                                                                 abort = true;
 409                                                 }
 410                                                 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
 411                                                 {
 412                                                         if (modehandlers[handler_id]->GetNumParams(adding))
 413                                                         {
 414                                                                 /* This mode expects a parameter, do we have any parameters left in our list to use? */
 415                                                                 if (parameter_counter < pcnt)
 416                                                                 {
 417                                                                         parameter = parameters[parameter_counter++];
 418
 419                                                                         /* Yerk, invalid! */
 420                                                                         if ((parameter.rfind(':') != std::string::npos) || (parameter.rfind(' ') != std::string::npos))
 421                                                                                 parameter = "";
 422                                                                 }
 423                                                                 else
 424                                                                 {
 425                                                                         /* No parameter, continue to the next mode */
 426                                                                         continue;
 427                                                                 }
 428                                                         }
 429
 430                                                         /* It's an oper only mode, check if theyre an oper. If they arent,
 431                                                          * eat any parameter that  came with the mode, and continue to next
 432                                                          */
 433                                                         if ((IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!*user->oper))
 434                                                         {
 435                                                                 user->WriteServ("481 %s :Permission Denied- Only operators may set %s mode %c", user->nick,
 436                                                                                 type == MODETYPE_CHANNEL ? "channel" : "user", modehandlers[handler_id]->GetModeChar());
 437                                                                 continue;
 438                                                         }
 439
 440                                                         /* Call the handler for the mode */
 441                                                         ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
 442
 443                                                         if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter == ""))
 444                                                         {
 445                                                                 /* The handler nuked the parameter and they are supposed to have one.
 446                                                                  * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
 447                                                                  * so we bail to the next mode character.
 448                                                                  */
 449                                                                 continue;
 450                                                         }
 451
 452                                                         if (ma == MODEACTION_ALLOW)
 453                                                         {
 454                                                                 /* We're about to output a valid mode letter - was there previously a pending state-change? */
 455                                                                 if (state_change)
 456                                                                         output_sequence.append(adding ? "+" : "-");
 457
 458                                                                 /* Add the mode letter */
 459                                                                 output_sequence.push_back(modechar);
 460
 461                                                                 /* Is there a valid parameter for this mode? If so add it to the parameter list */
 462                                                                 if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter != ""))
 463                                                                 {
 464                                                                         parameter_list << " " << parameter;
 465                                                                         /* Does this mode have a prefix? */
 466                                                                         if (modehandlers[handler_id]->GetPrefix() && targetchannel)
 467                                                                         {
 468                                                                                 userrec* user_to_prefix = ServerInstance->FindNick(parameter);
 469                                                                                 if (user_to_prefix)
 470                                                                                         targetchannel->SetPrefix(user_to_prefix, modehandlers[handler_id]->GetPrefix(),
 471                                                                                                         modehandlers[handler_id]->GetPrefixRank(), adding);
 472                                                                         }
 473                                                                 }
 474
 475                                                                 /* Call all the AfterMode events in the mode watchers for this mode */
 476                                                                 for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
 477                                                                         (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
 478
 479                                                                 /* Reset the state change flag */
 480                                                                 state_change = false;
 481                                                         }
 482                                                 }
 483                                         }
 484                                         else
 485                                         {
 486                                                 /* No mode handler? Unknown mode character then. */
 487                                                 user->WriteServ("472 %s %c :is unknown mode char to me",user->nick, modechar);
 488                                         }
 489                                 break;
 490                         }
 491                 }
 492                 /* Was there at least one valid mode in the sequence? */
 493                 if (output_sequence != "")
 494                 {
 495                         if (servermode)
 496                         {
 497                                 if (type == MODETYPE_CHANNEL)
 498                                 {
 499                                         targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s %s%s", targetchannel->name, output_sequence.c_str(), parameter_list.str().c_str());
 500                                 }
 501                                 else
 502                                 {
 503                                         targetuser->WriteServ("MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());
 504                                 }
 505                         }
 506                         else
 507                         {
 508                                 if (type == MODETYPE_CHANNEL)
 509                                 {
 510                                         ServerInstance->Log(DEBUG,"Write output sequence and parameters to channel: %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
 511                                         targetchannel->WriteChannel(user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
 512                                         FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
 513                                 }
 514                                 else
 515                                 {
 516                                         user->WriteTo(targetuser,"MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());
 517                                         FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence));
 518                                 }
 519                         }
 520                 }
 521         }
 522 }
 523
 524
 525 void cmd_mode::Handle (const char** parameters, int pcnt, userrec *user)
 526 {
 527         if (!user)
 528                 return;
 529
 530         ServerInstance->Modes->Process(parameters, pcnt, user, false);
 531
 532         return;
 533 }
 534
 535 void ModeParser::CleanMask(std::string &mask)
 536 {
 537         std::string::size_type pos_of_pling = mask.find_first_of('!');
 538         std::string::size_type pos_of_at = mask.find_first_of('@');
 539         std::string::size_type pos_of_dot = mask.find_first_of('.');
 540         std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */
 541
 542         if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
 543         {
 544                 /* Just a nick, or just a host */
 545                 if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))
 546                 {
 547                         /* It has no '.' in it, it must be a nick. */
 548                         mask.append("!*@*");
 549                 }
 550                 else
 551                 {
 552                         /* Got a dot in it? Has to be a host */
 553                         mask = "*!*@" + mask;
 554                 }
 555         }
 556         else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
 557         {
 558                 /* Has an @ but no !, its a user@host */
 559                  mask = "*!" + mask;
 560         }
 561         else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
 562         {
 563                 /* Has a ! but no @, it must be a nick!ident */
 564                 mask.append("@*");
 565         }
 566 }
 567
 568 bool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)
 569 {
 570         unsigned char mask = 0;
 571         unsigned char pos = 0;
 572
 573         /* Yes, i know, this might let people declare modes like '_' or '^'.
 574          * If they do that, thats their problem, and if i ever EVER see an
 575          * official InspIRCd developer do that, i'll beat them with a paddle!
 576          */
 577         if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z'))
 578                 return false;
 579
 580         /* A mode prefix of ',' is not acceptable, it would fuck up server to server.
 581          * A mode prefix of ':' will fuck up both server to server, and client to server.
 582          */
 583         if ((mh->GetPrefix() == ',') || (mh->GetPrefix() == ':'))
 584                 return false;
 585
 586         mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 587         pos = (mh->GetModeChar()-65) | mask;
 588
 589         if (modehandlers[pos])
 590                 return false;
 591
 592         modehandlers[pos] = mh;
 593         ServerInstance->Log(DEBUG,"ModeParser::AddMode: added mode %c",mh->GetModeChar());
 594         return true;
 595 }
 596
 597 ModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt)
 598 {
 599         unsigned char mask = 0;
 600         unsigned char pos = 0;
 601
 602         if ((modeletter < 'A') || (modeletter > 'z'))
 603                 return NULL;
 604
 605         mt == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 606         pos = (modeletter-65) | mask;
 607
 608         return modehandlers[pos];
 609 }
 610
 611 std::string ModeParser::UserModeList()
 612 {
 613         char modestr[256];
 614         int pointer = 0;
 615
 616         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 617         {
 618                 unsigned char pos = (mode-65) | MASK_USER;
 619
 620                 if (modehandlers[pos])
 621                         modestr[pointer++] = mode;
 622         }
 623         modestr[pointer++] = 0;
 624         return modestr;
 625 }
 626
 627 std::string ModeParser::ChannelModeList()
 628 {
 629         char modestr[256];
 630         int pointer = 0;
 631
 632         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 633         {
 634                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 635
 636                 if (modehandlers[pos])
 637                         modestr[pointer++] = mode;
 638         }
 639         modestr[pointer++] = 0;
 640         return modestr;
 641 }
 642
 643 std::string ModeParser::ParaModeList()
 644 {
 645         char modestr[256];
 646         int pointer = 0;
 647
 648         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 649         {
 650                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 651
 652                 if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true)))
 653                         modestr[pointer++] = mode;
 654         }
 655         modestr[pointer++] = 0;
 656         return modestr;
 657 }
 658
 659 ModeHandler* ModeParser::FindPrefix(unsigned const char pfxletter)
 660 {
 661         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 662         {
 663                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 664
 665                 if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix() == pfxletter))
 666                 {
 667                         return modehandlers[pos];
 668                 }
 669         }
 670         return NULL;
 671 }
 672
 673 std::string ModeParser::ModeString(userrec* user, chanrec* channel)
 674 {
 675         std::string types;
 676         std::string pars;
 677
 678         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 679         {
 680                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 681                 ModeHandler* mh = modehandlers[pos];
 682                 if ((mh) && (mh->GetNumParams(true)) && (mh->GetNumParams(false)))
 683                 {
 684                         ModePair ret;
 685                         ret = mh->ModeSet(NULL, user, channel, user->nick);
 686                         if (ret.first)
 687                         {
 688                                 pars.append(" ");
 689                                 pars.append(user->nick);
 690                                 types.push_back(mh->GetModeChar());
 691                         }
 692                 }
 693         }
 694
 695         return types+pars;
 696 }
 697
 698 std::string ModeParser::ChanModes()
 699 {
 700         std::string type1;      /* Listmodes EXCEPT those with a prefix */
 701         std::string type2;      /* Modes that take a param when adding or removing */
 702         std::string type3;      /* Modes that only take a param when adding */
 703         std::string type4;      /* Modes that dont take a param */
 704
 705         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 706         {
 707                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 708                  /* One parameter when adding */
 709                 if (modehandlers[pos])
 710                 {
 711                         if (modehandlers[pos]->GetNumParams(true))
 712                         {
 713                                 if ((modehandlers[pos]->IsListMode()) && (!modehandlers[pos]->GetPrefix()))
 714                                 {
 715                                         type1 += modehandlers[pos]->GetModeChar();
 716                                 }
 717                                 else
 718                                 {
 719                                         /* ... and one parameter when removing */
 720                                         if (modehandlers[pos]->GetNumParams(false))
 721                                         {
 722                                                 /* But not a list mode */
 723                                                 if (!modehandlers[pos]->GetPrefix())
 724                                                 {
 725                                                         type2 += modehandlers[pos]->GetModeChar();
 726                                                 }
 727                                         }
 728                                         else
 729                                         {
 730                                                 /* No parameters when removing */
 731                                                 type3 += modehandlers[pos]->GetModeChar();
 732                                         }
 733                                 }
 734                         }
 735                         else
 736                         {
 737                                 type4 += modehandlers[pos]->GetModeChar();
 738                         }
 739                 }
 740
 741         }
 742
 743         return type1 + "," + type2 + "," + type3 + "," + type4;
 744 }
 745
 746 bool ModeParser::PrefixComparison(const prefixtype one, const prefixtype two)
 747 {
 748         return one.second > two.second;
 749 }
 750
 751 std::string ModeParser::BuildPrefixes()
 752 {
 753         std::string mletters = "";
 754         std::string mprefixes = "";
 755         pfxcontainer pfx;
 756         std::map<char,char> prefix_to_mode;
 757
 758         for (unsigned char mode = 'A'; mode <= 'z'; mode++)
 759         {
 760                 unsigned char pos = (mode-65) | MASK_CHANNEL;
 761
 762                 if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix()))
 763                 {
 764                         pfx.push_back(std::make_pair<char,unsigned int>(modehandlers[pos]->GetPrefix(), modehandlers[pos]->GetPrefixRank()));
 765                         prefix_to_mode[modehandlers[pos]->GetPrefix()] = modehandlers[pos]->GetModeChar();
 766                 }
 767         }
 768
 769         sort(pfx.begin(), pfx.end(), ModeParser::PrefixComparison);
 770
 771         for (pfxcontainer::iterator n = pfx.begin(); n != pfx.end(); n++)
 772         {
 773                 mletters = mletters + n->first;
 774                 mprefixes = mprefixes + prefix_to_mode.find(n->first)->second;
 775         }
 776
 777         return "(" + mprefixes + ")" + mletters;
 778 }
 779
 780 bool ModeParser::AddModeWatcher(ModeWatcher* mw)
 781 {
 782         unsigned char mask = 0;
 783         unsigned char pos = 0;
 784
 785         if (!mw)
 786                 return false;
 787
 788         if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
 789                 return false;
 790
 791         mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 792         pos = (mw->GetModeChar()-65) | mask;
 793
 794         modewatchers[pos].push_back(mw);
 795         ServerInstance->Log(DEBUG,"ModeParser::AddModeWatcher: watching mode %c",mw->GetModeChar());
 796
 797         return true;
 798 }
 799
 800 bool ModeParser::DelModeWatcher(ModeWatcher* mw)
 801 {
 802         unsigned char mask = 0;
 803         unsigned char pos = 0;
 804
 805         if (!mw)
 806                 return false;
 807
 808         if ((mw->GetModeType() < 'A') || (mw->GetModeType() > 'z'))
 809                 return false;
 810
 811         mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 812         pos = (mw->GetModeChar()-65) | mask;
 813
 814         ModeWatchIter a = find(modewatchers[pos].begin(),modewatchers[pos].end(),mw);
 815
 816         if (a == modewatchers[pos].end())
 817                 return false;
 818
 819         modewatchers[pos].erase(a);
 820         ServerInstance->Log(DEBUG,"ModeParser::DelModeWatcher: stopped watching mode %c",mw->GetModeChar());
 821
 822         return true;
 823 }
 824
 825 ModeParser::ModeParser(InspIRCd* Instance) : ServerInstance(Instance)
 826 {
 827         /* Clear mode list */
 828         memset(modehandlers, 0, sizeof(modehandlers));
 829         memset(modewatchers, 0, sizeof(modewatchers));
 830
 831         /* Initialise the RFC mode letters */
 832
 833         /* Start with channel simple modes, no params */
 834         this->AddMode(new ModeChannelSecret(Instance), 's');
 835         this->AddMode(new ModeChannelPrivate(Instance), 'p');
 836         this->AddMode(new ModeChannelModerated(Instance), 'm');
 837         this->AddMode(new ModeChannelTopicOps(Instance), 't');
 838         this->AddMode(new ModeChannelNoExternal(Instance), 'n');
 839         this->AddMode(new ModeChannelInviteOnly(Instance), 'i');
 840
 841         /* Cannel modes with params */
 842         this->AddMode(new ModeChannelKey(Instance), 'k');
 843         this->AddMode(new ModeChannelLimit(Instance), 'l');
 844
 845         /* Channel listmodes */
 846         this->AddMode(new ModeChannelBan(Instance), 'b');
 847         this->AddMode(new ModeChannelOp(Instance), 'o');
 848         this->AddMode(new ModeChannelHalfOp(Instance), 'h');
 849         this->AddMode(new ModeChannelVoice(Instance), 'v');
 850
 851         /* Now for usermodes */
 852         this->AddMode(new ModeUserServerNotice(Instance), 's');
 853         this->AddMode(new ModeUserWallops(Instance), 'w');
 854         this->AddMode(new ModeUserInvisible(Instance), 'i');
 855         this->AddMode(new ModeUserOperator(Instance), 'o');
 856         this->AddMode(new ModeUserServerNoticeMask(Instance), 'n');
 857 }
 858