src/channels.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include <stdarg.h>
  15 #include "configreader.h"
  16 #include "inspircd.h"
  17 #include "users.h"
  18 #include "modules.h"
  19 #include "wildcard.h"
  20 #include "mode.h"
  21
  22 chanrec::chanrec(InspIRCd* Instance) : ServerInstance(Instance)
  23 {
  24         *name = *topic = *setby = *key = 0;
  25         maxbans = created = topicset = limit = 0;
  26         memset(&modes,0,64);
  27         age = ServerInstance->Time(true);
  28 }
  29
  30 void chanrec::SetMode(char mode,bool mode_on)
  31 {
  32         modes[mode-65] = mode_on;
  33         if (!mode_on)
  34                 this->SetModeParam(mode,"",false);
  35 }
  36
  37
  38 void chanrec::SetModeParam(char mode,const char* parameter,bool mode_on)
  39 {
  40         CustomModeList::iterator n = custom_mode_params.find(mode);
  41
  42         if (mode_on)
  43         {
  44                 if (n == custom_mode_params.end())
  45                         custom_mode_params[mode] = strdup(parameter);
  46         }
  47         else
  48         {
  49                 if (n != custom_mode_params.end())
  50                 {
  51                         free(n->second);
  52                         custom_mode_params.erase(n);
  53                 }
  54         }
  55 }
  56
  57 bool chanrec::IsModeSet(char mode)
  58 {
  59         return modes[mode-65];
  60 }
  61
  62 std::string chanrec::GetModeParameter(char mode)
  63 {
  64         switch (mode)
  65         {
  66                 case 'k':
  67                         return this->key;
  68                 case 'l':
  69                         return ConvToStr(this->limit);
  70                 default:
  71                         CustomModeList::iterator n = custom_mode_params.find(mode);
  72                         if (n != custom_mode_params.end())
  73                                 return n->second;
  74                         return "";
  75                 break;
  76         }
  77 }
  78
  79 long chanrec::GetUserCounter()
  80 {
  81         return (this->internal_userlist.size());
  82 }
  83
  84 void chanrec::AddUser(userrec* user)
  85 {
  86         internal_userlist[user] = user->nick;
  87 }
  88
  89 unsigned long chanrec::DelUser(userrec* user)
  90 {
  91         CUListIter a = internal_userlist.find(user);
  92
  93         if (a != internal_userlist.end())
  94         {
  95                 internal_userlist.erase(a);
  96                 /* And tidy any others... */
  97                 DelOppedUser(user);
  98                 DelHalfoppedUser(user);
  99                 DelVoicedUser(user);
 100         }
 101
 102         return internal_userlist.size();
 103 }
 104
 105 bool chanrec::HasUser(userrec* user)
 106 {
 107         return (internal_userlist.find(user) != internal_userlist.end());
 108 }
 109
 110 void chanrec::AddOppedUser(userrec* user)
 111 {
 112         internal_op_userlist[user] = user->nick;
 113 }
 114
 115 void chanrec::DelOppedUser(userrec* user)
 116 {
 117         CUListIter a = internal_op_userlist.find(user);
 118         if (a != internal_op_userlist.end())
 119         {
 120                 internal_op_userlist.erase(a);
 121                 return;
 122         }
 123 }
 124
 125 void chanrec::AddHalfoppedUser(userrec* user)
 126 {
 127         internal_halfop_userlist[user] = user->nick;
 128 }
 129
 130 void chanrec::DelHalfoppedUser(userrec* user)
 131 {
 132         CUListIter a = internal_halfop_userlist.find(user);
 133
 134         if (a != internal_halfop_userlist.end())
 135         {
 136                 internal_halfop_userlist.erase(a);
 137         }
 138 }
 139
 140 void chanrec::AddVoicedUser(userrec* user)
 141 {
 142         internal_voice_userlist[user] = user->nick;
 143 }
 144
 145 void chanrec::DelVoicedUser(userrec* user)
 146 {
 147         CUListIter a = internal_voice_userlist.find(user);
 148
 149         if (a != internal_voice_userlist.end())
 150         {
 151                 internal_voice_userlist.erase(a);
 152         }
 153 }
 154
 155 CUList* chanrec::GetUsers()
 156 {
 157         return &internal_userlist;
 158 }
 159
 160 CUList* chanrec::GetOppedUsers()
 161 {
 162         return &internal_op_userlist;
 163 }
 164
 165 CUList* chanrec::GetHalfoppedUsers()
 166 {
 167         return &internal_halfop_userlist;
 168 }
 169
 170 CUList* chanrec::GetVoicedUsers()
 171 {
 172         return &internal_voice_userlist;
 173 }
 174
 175 /*
 176  * add a channel to a user, creating the record for it if needed and linking
 177  * it to the user record
 178  */
 179 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key, time_t TS)
 180 {
 181         if (!user || !cn)
 182                 return NULL;
 183
 184         bool new_channel = false;
 185         char cname[MAXBUF];
 186         int MOD_RESULT = 0;
 187         strlcpy(cname,cn,CHANMAX);
 188
 189         std::string privs;
 190
 191         chanrec* Ptr = Instance->FindChan(cname);
 192
 193         if (!Ptr)
 194         {
 195                 if ((!IS_LOCAL(user)) && (!TS))
 196                         Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 197
 198                 privs = "@";
 199
 200                 if (IS_LOCAL(user) && override == false)
 201                 {
 202                         MOD_RESULT = 0;
 203                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 204                         if (MOD_RESULT == 1)
 205                                 return NULL;
 206                 }
 207
 208                 /* create a new one */
 209                 Ptr = new chanrec(Instance);
 210                 (*(Instance->chanlist))[cname] = Ptr;
 211
 212                 strlcpy(Ptr->name, cname,CHANMAX);
 213
 214                 /* As spotted by jilles, dont bother to set this on remote users */
 215                 if (IS_LOCAL(user))
 216                         Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 217
 218                 Ptr->created = TS ? TS : Instance->Time();
 219                 Ptr->age = Ptr->created;
 220                 *Ptr->topic = 0;
 221                 *Ptr->setby = 0;
 222                 Ptr->topicset = 0;
 223                 new_channel = true;
 224         }
 225         else
 226         {
 227                 /* Already on the channel */
 228                 if (Ptr->HasUser(user))
 229                         return NULL;
 230
 231                 /*
 232                  * remote users are allowed us to bypass channel modes
 233                  * and bans (used by servers)
 234                  */
 235                 if (IS_LOCAL(user) && override == false)
 236                 {
 237                         MOD_RESULT = 0;
 238                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 239                         if (MOD_RESULT == 1)
 240                         {
 241                                 return NULL;
 242                         }
 243                         else if (MOD_RESULT == 0)
 244                         {
 245                                 if (*Ptr->key)
 246                                 {
 247                                         MOD_RESULT = 0;
 248                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 249                                         if (!MOD_RESULT)
 250                                         {
 251                                                 if ((!key) || strcmp(key,Ptr->key))
 252                                                 {
 253                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 254                                                         return NULL;
 255                                                 }
 256                                         }
 257                                 }
 258                                 if (Ptr->modes[CM_INVITEONLY])
 259                                 {
 260                                         MOD_RESULT = 0;
 261                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 262                                         if (!MOD_RESULT)
 263                                         {
 264                                                 if (user->IsInvited(Ptr->name))
 265                                                 {
 266                                                         /* user was invited to channel */
 267                                                         /* there may be an optional channel NOTICE here */
 268                                                 }
 269                                                 else
 270                                                 {
 271                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 272                                                         return NULL;
 273                                                 }
 274                                         }
 275                                         user->RemoveInvite(Ptr->name);
 276                                 }
 277                                 if (Ptr->limit)
 278                                 {
 279                                         MOD_RESULT = 0;
 280                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 281                                         if (!MOD_RESULT)
 282                                         {
 283                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 284                                                 {
 285                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 286                                                         return NULL;
 287                                                 }
 288                                         }
 289                                 }
 290                                 if (Ptr->bans.size())
 291                                 {
 292                                         if (Ptr->IsBanned(user))
 293                                         {
 294                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 295                                                 return NULL;
 296                                         }
 297                                 }
 298                         }
 299                 }
 300         }
 301
 302         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 303          * OperMaxchans. For remote users which are not bound by the channel limits,
 304          * we can extend infinitely. Otherwise, nope, youre restricted to MaxChans.
 305          */
 306         if (!IS_LOCAL(user) || override == true)
 307         {
 308                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 309         }
 310         else if (*user->oper)
 311         {
 312                 /* Oper allows extension up to the OperMaxchans value */
 313                 if (user->chans.size() < Instance->Config->OperMaxChans)
 314                 {
 315                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 316                 }
 317         }
 318         else if (user->chans.size() < Instance->Config->MaxChans)
 319         {
 320                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 321         }
 322
 323
 324         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 325
 326         if (new_channel)
 327         {
 328                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 329                 chan_hash::iterator n = Instance->chanlist->find(cname);
 330                 if (n != Instance->chanlist->end())
 331                 {
 332                         Ptr->DelUser(user);
 333                         DELETE(Ptr);
 334                         Instance->chanlist->erase(n);
 335                 }
 336         }
 337
 338         return NULL;
 339 }
 340
 341 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 342 {
 343         userrec* dummyuser = new userrec(Instance);
 344         std::string nick = user->nick;
 345         bool silent = false;
 346
 347         dummyuser->SetFd(FD_MAGIC_NUMBER);
 348         Ptr->AddUser(user);
 349
 350         /* Just in case they have no permissions */
 351         user->chans[Ptr] = 0;
 352
 353         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 354         {
 355                 const char status = *x;
 356                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 357                 if (mh)
 358                 {
 359                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 360                         /* Make sure that the mode handler knows this mode was now set */
 361                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 362
 363                         switch (mh->GetPrefix())
 364                         {
 365                                 /* These logic ops are SAFE IN THIS CASE
 366                                  * because if the entry doesnt exist,
 367                                  * addressing operator[] creates it.
 368                                  * If they do exist, it points to it.
 369                                  * At all other times where we dont want
 370                                  * to create an item if it doesnt exist, we
 371                                  * must stick to ::find().
 372                                  */
 373                                 case '@':
 374                                         user->chans[Ptr] |= UCMODE_OP;
 375                                 break;
 376                                 case '%':
 377                                         user->chans[Ptr] |= UCMODE_HOP;
 378                                 break;
 379                                 case '+':
 380                                         user->chans[Ptr] |= UCMODE_VOICE;
 381                                 break;
 382                         }
 383                 }
 384         }
 385
 386         delete dummyuser;
 387
 388         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 389
 390         if (!silent)
 391                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 392
 393         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 394         std::string ms = Instance->Modes->ModeString(user, Ptr);
 395         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 396                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 397
 398         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 399         if (IS_LOCAL(user))
 400         {
 401                 if (Ptr->topicset)
 402                 {
 403                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 404                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 405                 }
 406                 Ptr->UserList(user);
 407         }
 408         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 409         return Ptr;
 410 }
 411
 412 bool chanrec::IsBanned(userrec* user)
 413 {
 414         char mask[MAXBUF];
 415         int MOD_RESULT = 0;
 416         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 417         if (!MOD_RESULT)
 418         {
 419                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 420                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 421                 {
 422                         /* This allows CIDR ban matching
 423                          *
 424                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 425                          */
 426                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 427                         {
 428                                 return true;
 429                         }
 430                 }
 431         }
 432         return false;
 433 }
 434
 435 /* chanrec::PartUser
 436  * remove a channel from a users record, and return the number of users left.
 437  * Therefore, if this function returns 0 the caller should delete the chanrec.
 438  */
 439 long chanrec::PartUser(userrec *user, const char* reason)
 440 {
 441         bool silent = false;
 442
 443         if (!user)
 444                 return this->GetUserCounter();
 445
 446         UCListIter i = user->chans.find(this);
 447         if (i != user->chans.end())
 448         {
 449                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 450
 451                 if (!silent)
 452                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 453
 454                 user->chans.erase(i);
 455                 this->RemoveAllPrefixes(user);
 456         }
 457
 458         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 459         {
 460                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 461                 /* kill the record */
 462                 if (iter != ServerInstance->chanlist->end())
 463                 {
 464                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 465                         ServerInstance->chanlist->erase(iter);
 466                 }
 467                 return 0;
 468         }
 469
 470         return this->GetUserCounter();
 471 }
 472
 473 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 474 {
 475         bool silent = false;
 476
 477         if (!user || !reason)
 478                 return this->GetUserCounter();
 479
 480         if (IS_LOCAL(user))
 481         {
 482                 if (!this->HasUser(user))
 483                 {
 484                         /* Not on channel */
 485                         return this->GetUserCounter();
 486                 }
 487         }
 488
 489         if (triggerevents)
 490         {
 491                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 492         }
 493
 494         UCListIter i = user->chans.find(this);
 495         if (i != user->chans.end())
 496         {
 497                 if (!silent)
 498                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 499
 500                 user->chans.erase(i);
 501                 this->RemoveAllPrefixes(user);
 502         }
 503
 504         if (!this->DelUser(user))
 505         {
 506                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 507                 /* kill the record */
 508                 if (iter != ServerInstance->chanlist->end())
 509                 {
 510                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 511                         ServerInstance->chanlist->erase(iter);
 512                 }
 513                 return 0;
 514         }
 515
 516         return this->GetUserCounter();
 517 }
 518
 519 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 520 {
 521         bool silent = false;
 522
 523         if (!src || !user || !reason)
 524                 return this->GetUserCounter();
 525
 526         if (IS_LOCAL(src))
 527         {
 528                 if (!this->HasUser(user))
 529                 {
 530                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 531                         return this->GetUserCounter();
 532                 }
 533                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 534                 {
 535                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 536                         return this->GetUserCounter();
 537                 }
 538                 int MOD_RESULT = 0;
 539
 540                 if (!ServerInstance->ULine(src->server))
 541                 {
 542                         MOD_RESULT = 0;
 543                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 544                         if (MOD_RESULT == 1)
 545                                 return this->GetUserCounter();
 546                 }
 547                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 548                 if (MOD_RESULT != -1)
 549                 {
 550                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 551                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 552                                 return this->GetUserCounter();
 553
 554                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 555                         {
 556                                 int them = this->GetStatus(src);
 557                                 int us = this->GetStatus(user);
 558                                 if ((them < STATUS_HOP) || (them < us))
 559                                 {
 560                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 561                                         return this->GetUserCounter();
 562                                 }
 563                         }
 564                 }
 565         }
 566
 567         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 568
 569         UCListIter i = user->chans.find(this);
 570         if (i != user->chans.end())
 571         {
 572                 /* zap it from the channel list of the user */
 573                 if (!silent)
 574                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 575
 576                 user->chans.erase(i);
 577                 this->RemoveAllPrefixes(user);
 578         }
 579
 580         if (!this->DelUser(user))
 581         /* if there are no users left on the channel */
 582         {
 583                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 584
 585                 /* kill the record */
 586                 if (iter != ServerInstance->chanlist->end())
 587                 {
 588                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 589                         ServerInstance->chanlist->erase(iter);
 590                 }
 591                 return 0;
 592         }
 593
 594         return this->GetUserCounter();
 595 }
 596
 597 void chanrec::WriteChannel(userrec* user, char* text, ...)
 598 {
 599         char textbuffer[MAXBUF];
 600         va_list argsPtr;
 601
 602         if (!user || !text)
 603                 return;
 604
 605         va_start(argsPtr, text);
 606         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 607         va_end(argsPtr);
 608
 609         this->WriteChannel(user, std::string(textbuffer));
 610 }
 611
 612 void chanrec::WriteChannel(userrec* user, const std::string &text)
 613 {
 614         CUList *ulist = this->GetUsers();
 615         char tb[MAXBUF];
 616
 617         if (!user)
 618                 return;
 619
 620         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 621         std::string out = tb;
 622
 623         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 624         {
 625                 if (IS_LOCAL(i->first))
 626                         i->first->Write(out);
 627         }
 628 }
 629
 630 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 631 {
 632         char textbuffer[MAXBUF];
 633         va_list argsPtr;
 634
 635         if (!text)
 636                 return;
 637
 638         va_start(argsPtr, text);
 639         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 640         va_end(argsPtr);
 641
 642         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 643 }
 644
 645 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 646 {
 647         CUList *ulist = this->GetUsers();
 648         char tb[MAXBUF];
 649
 650         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 651         std::string out = tb;
 652
 653         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 654         {
 655                 if (IS_LOCAL(i->first))
 656                         i->first->Write(out);
 657         }
 658 }
 659
 660 /* write formatted text from a source user to all users on a channel except
 661  * for the sender (for privmsg etc) */
 662 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 663 {
 664         char textbuffer[MAXBUF];
 665         va_list argsPtr;
 666
 667         if (!text)
 668                 return;
 669
 670         va_start(argsPtr, text);
 671         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 672         va_end(argsPtr);
 673
 674         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 675 }
 676
 677 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 678 {
 679         char textbuffer[MAXBUF];
 680         va_list argsPtr;
 681
 682         if (!text)
 683                 return;
 684
 685         va_start(argsPtr, text);
 686         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 687         va_end(argsPtr);
 688
 689         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 690 }
 691
 692 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 693 {
 694         CUList *ulist;
 695         char tb[MAXBUF];
 696
 697         switch (status)
 698         {
 699                 case '@':
 700                         ulist = this->GetOppedUsers();
 701                         break;
 702                 case '%':
 703                         ulist = this->GetHalfoppedUsers();
 704                         break;
 705                 case '+':
 706                         ulist = this->GetVoicedUsers();
 707                         break;
 708                 default:
 709                         ulist = this->GetUsers();
 710                         break;
 711         }
 712
 713         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 714         std::string out = tb;
 715
 716         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 717         {
 718                 if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
 719                 {
 720                         if (serversource)
 721                                 i->first->WriteServ(text);
 722                         else
 723                                 i->first->Write(out);
 724                 }
 725         }
 726 }
 727
 728 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 729 {
 730         CUList except_list;
 731         except_list[user] = user->nick;
 732         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 733 }
 734
 735 /*
 736  * return a count of the users on a specific channel accounting for
 737  * invisible users who won't increase the count. e.g. for /LIST
 738  */
 739 int chanrec::CountInvisible()
 740 {
 741         int count = 0;
 742         CUList *ulist= this->GetUsers();
 743         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 744         {
 745                 if (!(i->first->IsModeSet('i')))
 746                         count++;
 747         }
 748
 749         return count;
 750 }
 751
 752 char* chanrec::ChanModes(bool showkey)
 753 {
 754         static char scratch[MAXBUF];
 755         static char sparam[MAXBUF];
 756         char* offset = scratch;
 757         std::string extparam;
 758
 759         *scratch = '\0';
 760         *sparam = '\0';
 761
 762         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 763         for(int n = 0; n < 64; n++)
 764         {
 765                 if(this->modes[n])
 766                 {
 767                         *offset++ = n + 65;
 768                         extparam = "";
 769                         switch (n)
 770                         {
 771                                 case CM_KEY:
 772                                         extparam = (showkey ? this->key : "<key>");
 773                                 break;
 774                                 case CM_LIMIT:
 775                                         extparam = ConvToStr(this->limit);
 776                                 break;
 777                                 case CM_NOEXTERNAL:
 778                                 case CM_TOPICLOCK:
 779                                 case CM_INVITEONLY:
 780                                 case CM_MODERATED:
 781                                 case CM_SECRET:
 782                                 case CM_PRIVATE:
 783                                         /* We know these have no parameters */
 784                                 break;
 785                                 default:
 786                                         extparam = this->GetModeParameter(n + 65);
 787                                 break;
 788                         }
 789                         if (extparam != "")
 790                         {
 791                                 charlcat(sparam,' ',MAXBUF);
 792                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 793                         }
 794                 }
 795         }
 796
 797         /* Null terminate scratch */
 798         *offset = '\0';
 799         strlcat(scratch,sparam,MAXBUF);
 800         return scratch;
 801 }
 802
 803 /* compile a userlist of a channel into a string, each nick seperated by
 804  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 805  */
 806 void chanrec::UserList(userrec *user, CUList *ulist)
 807 {
 808         char list[MAXBUF];
 809         size_t dlen, curlen;
 810         int MOD_RESULT = 0;
 811
 812         if (!IS_LOCAL(user))
 813                 return;
 814
 815         FOREACH_RESULT(I_OnUserList,OnUserList(user, this, ulist));
 816         if (MOD_RESULT == 1)
 817                 return;
 818
 819         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 820
 821         int numusers = 0;
 822         char* ptr = list + dlen;
 823
 824         if (!ulist)
 825                 ulist = this->GetUsers();
 826
 827         /* Improvement by Brain - this doesnt change in value, so why was it inside
 828          * the loop?
 829          */
 830         bool has_user = this->HasUser(user);
 831
 832         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 833         {
 834                 if ((!has_user) && (i->first->modes[UM_INVISIBLE]))
 835                 {
 836                         /*
 837                          * user is +i, and source not on the channel, does not show
 838                          * nick in NAMES list
 839                          */
 840                         continue;
 841                 }
 842
 843                 if (i->first->Visibility && !i->first->Visibility->VisibleTo(user))
 844                         continue;
 845
 846                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->first), i->second.c_str());
 847
 848                 curlen += ptrlen;
 849                 ptr += ptrlen;
 850
 851                 numusers++;
 852
 853                 if (curlen > (480-NICKMAX))
 854                 {
 855                         /* list overflowed into multiple numerics */
 856                         user->WriteServ(std::string(list));
 857
 858                         /* reset our lengths */
 859                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 860                         ptr = list + dlen;
 861
 862                         ptrlen = 0;
 863                         numusers = 0;
 864                 }
 865         }
 866
 867         /* if whats left in the list isnt empty, send it */
 868         if (numusers)
 869         {
 870                 user->WriteServ(std::string(list));
 871         }
 872
 873         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 874 }
 875
 876 long chanrec::GetMaxBans()
 877 {
 878         /* Return the cached value if there is one */
 879         if (this->maxbans)
 880                 return this->maxbans;
 881
 882         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 883         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 884         {
 885                 if (match(this->name,n->first.c_str()))
 886                 {
 887                         this->maxbans = n->second;
 888                         return n->second;
 889                 }
 890         }
 891
 892         /* Screw it, just return the default of 64 */
 893         this->maxbans = 64;
 894         return this->maxbans;
 895 }
 896
 897 void chanrec::ResetMaxBans()
 898 {
 899         this->maxbans = 0;
 900 }
 901
 902 /* returns the status character for a given user on a channel, e.g. @ for op,
 903  * % for halfop etc. If the user has several modes set, the highest mode
 904  * the user has must be returned.
 905  */
 906 const char* chanrec::GetPrefixChar(userrec *user)
 907 {
 908         static char pf[2] = {0, 0};
 909
 910         prefixlist::iterator n = prefixes.find(user);
 911         if (n != prefixes.end())
 912         {
 913                 if (n->second.size())
 914                 {
 915                         /* If the user has any prefixes, their highest prefix
 916                          * will always be at the head of the list, as the list is
 917                          * sorted in rank order highest first (see SetPrefix()
 918                          * for reasons why)
 919                          */
 920                         *pf = n->second.begin()->first;
 921                         return pf;
 922                 }
 923         }
 924
 925         *pf = 0;
 926         return pf;
 927 }
 928
 929 const char* chanrec::GetAllPrefixChars(userrec* user)
 930 {
 931         static char prefix[MAXBUF];
 932         int ctr = 0;
 933         *prefix = 0;
 934
 935         prefixlist::iterator n = prefixes.find(user);
 936         if (n != prefixes.end())
 937         {
 938                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 939                 {
 940                         prefix[ctr++] = x->first;
 941                 }
 942         }
 943
 944         prefix[ctr] = 0;
 945
 946         return prefix;
 947 }
 948
 949 unsigned int chanrec::GetPrefixValue(userrec* user)
 950 {
 951         prefixlist::iterator n = prefixes.find(user);
 952         if (n != prefixes.end())
 953         {
 954                 if (n->second.size())
 955                         return n->second.begin()->second;
 956         }
 957         return 0;
 958 }
 959
 960 int chanrec::GetStatusFlags(userrec *user)
 961 {
 962         UCListIter i = user->chans.find(this);
 963         if (i != user->chans.end())
 964         {
 965                 return i->second;
 966         }
 967         return 0;
 968 }
 969
 970 int chanrec::GetStatus(userrec *user)
 971 {
 972         if (ServerInstance->ULine(user->server))
 973                 return STATUS_OP;
 974
 975         UCListIter i = user->chans.find(this);
 976         if (i != user->chans.end())
 977         {
 978                 if ((i->second & UCMODE_OP) > 0)
 979                 {
 980                         return STATUS_OP;
 981                 }
 982                 if ((i->second & UCMODE_HOP) > 0)
 983                 {
 984                         return STATUS_HOP;
 985                 }
 986                 if ((i->second & UCMODE_VOICE) > 0)
 987                 {
 988                         return STATUS_VOICE;
 989                 }
 990                 return STATUS_NORMAL;
 991         }
 992         return STATUS_NORMAL;
 993 }
 994
 995 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
 996 {
 997         prefixlist::iterator n = prefixes.find(user);
 998         prefixtype pfx = std::make_pair(prefix,prefix_value);
 999         if (adding)
1000         {
1001                 if (n != prefixes.end())
1002                 {
1003                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1004                         {
1005                                 n->second.push_back(pfx);
1006                                 /* We must keep prefixes in rank order, largest first.
1007                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1008                                  * state, and secondly it turns out to be a benefit to us later.
1009                                  * See above in GetPrefix().
1010                                  */
1011                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1012                         }
1013                 }
1014                 else
1015                 {
1016                         pfxcontainer one;
1017                         one.push_back(pfx);
1018                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1019                 }
1020         }
1021         else
1022         {
1023                 if (n != prefixes.end())
1024                 {
1025                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1026                         if (x != n->second.end())
1027                                 n->second.erase(x);
1028                 }
1029         }
1030 }
1031
1032 void chanrec::RemoveAllPrefixes(userrec* user)
1033 {
1034         prefixlist::iterator n = prefixes.find(user);
1035         if (n != prefixes.end())
1036         {
1037                 prefixes.erase(n);
1038         }
1039 }
1040