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