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         internal_userlist.clear();
  32         memset(&modes,0,64);
  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))
 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                 Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 229                 Ptr->created = Instance->Time();
 230                 *Ptr->topic = 0;
 231                 *Ptr->setby = 0;
 232                 Ptr->topicset = 0;
 233                 Instance->Log(DEBUG,"chanrec::JoinUser(): created: %s",cname);
 234                 new_channel = true;
 235         }
 236         else
 237         {
 238                 /* Already on the channel */
 239                 if (Ptr->HasUser(user))
 240                         return NULL;
 241
 242                 /*
 243                  * remote users are allowed us to bypass channel modes
 244                  * and bans (used by servers)
 245                  */
 246                 if (IS_LOCAL(user)) /* was a check on fd > -1 */
 247                 {
 248                         MOD_RESULT = 0;
 249                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 250                         if (MOD_RESULT == 1)
 251                         {
 252                                 return NULL;
 253                         }
 254                         else if (MOD_RESULT == 0)
 255                         {
 256                                 if (*Ptr->key)
 257                                 {
 258                                         MOD_RESULT = 0;
 259                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 260                                         if (!MOD_RESULT)
 261                                         {
 262                                                 if ((!key) || strcmp(key,Ptr->key))
 263                                                 {
 264                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 265                                                         return NULL;
 266                                                 }
 267                                         }
 268                                 }
 269                                 if (Ptr->modes[CM_INVITEONLY])
 270                                 {
 271                                         MOD_RESULT = 0;
 272                                         irc::string xname(Ptr->name);
 273                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 274                                         if (!MOD_RESULT)
 275                                         {
 276                                                 if (user->IsInvited(xname))
 277                                                 {
 278                                                         /* user was invited to channel */
 279                                                         /* there may be an optional channel NOTICE here */
 280                                                 }
 281                                                 else
 282                                                 {
 283                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 284                                                         return NULL;
 285                                                 }
 286                                         }
 287                                         user->RemoveInvite(xname);
 288                                 }
 289                                 if (Ptr->limit)
 290                                 {
 291                                         MOD_RESULT = 0;
 292                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 293                                         if (!MOD_RESULT)
 294                                         {
 295                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 296                                                 {
 297                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 298                                                         return NULL;
 299                                                 }
 300                                         }
 301                                 }
 302                                 if (Ptr->bans.size())
 303                                 {
 304                                         if (Ptr->IsBanned(user))
 305                                         {
 306                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 307                                                 return NULL;
 308                                         }
 309                                 }
 310                         }
 311                 }
 312                 else
 313                 {
 314                         Instance->Log(DEBUG,"chanrec::JoinUser(): Overridden checks");
 315                 }
 316         }
 317
 318         for (UserChanList::const_iterator index = user->chans.begin(); index != user->chans.end(); index++)
 319         {
 320                 if ((*index)->channel == NULL)
 321                 {
 322                         return chanrec::ForceChan(Instance, Ptr, *index, user, privs);
 323                 }
 324         }
 325
 326         /*
 327          * XXX: If the user is an oper here, we can just extend their user->chans vector by one
 328          * and put the channel in here. Same for remote users which are not bound by
 329          * the channel limits. Otherwise, nope, youre boned.
 330          */
 331         if (!IS_LOCAL(user)) /* was a check on fd < 0 */
 332         {
 333                 ucrec* a = new ucrec();
 334                 chanrec* c = chanrec::ForceChan(Instance, Ptr, a, user, privs);
 335                 user->chans.push_back(a);
 336                 return c;
 337         }
 338         else if (*user->oper)
 339         {
 340                 /* Oper allows extension up to the OPERMAXCHANS value */
 341                 if (user->chans.size() < OPERMAXCHANS)
 342                 {
 343                         ucrec* a = new ucrec();
 344                         chanrec* c = chanrec::ForceChan(Instance, Ptr, a, user, privs);
 345                         user->chans.push_back(a);
 346                         return c;
 347                 }
 348         }
 349
 350         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 351
 352         if (new_channel)
 353         {
 354                 Instance->Log(DEBUG,"BLAMMO, Whacking channel.");
 355                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 356                 chan_hash::iterator n = Instance->chanlist.find(cname);
 357                 if (n != Instance->chanlist.end())
 358                 {
 359                         Ptr->DelUser(user);
 360                         DELETE(Ptr);
 361                         Instance->chanlist.erase(n);
 362                         for (unsigned int index =0; index < user->chans.size(); index++)
 363                         {
 364                                 if (user->chans[index]->channel == Ptr)
 365                                 {
 366                                         user->chans[index]->channel = NULL;
 367                                         user->chans[index]->uc_modes = 0;
 368                                 }
 369                         }
 370                 }
 371         }
 372         else
 373         {
 374                 for (unsigned int index =0; index < user->chans.size(); index++)
 375                 {
 376                         if (user->chans[index]->channel == Ptr)
 377                         {
 378                                 user->chans[index]->channel = NULL;
 379                                 user->chans[index]->uc_modes = 0;
 380                         }
 381                 }
 382         }
 383         return NULL;
 384 }
 385
 386 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr,ucrec *a,userrec* user, const std::string &privs)
 387 {
 388         userrec* dummyuser = new userrec(Instance);
 389         std::string nick = user->nick;
 390
 391         a->uc_modes = 0;
 392         dummyuser->SetFd(FD_MAGIC_NUMBER);
 393
 394         a->channel = Ptr;
 395         Ptr->AddUser(user);
 396         user->ModChannelCount(1);
 397
 398         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 399         {
 400                 const char status = *x;
 401                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 402                 if (mh)
 403                 {
 404                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 405                         /* Make sure that the mode handler knows this mode was now set */
 406                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 407                 }
 408         }
 409
 410         delete dummyuser;
 411
 412         Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 413
 414         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 415         std::string ms = Instance->Modes->ModeString(user, Ptr);
 416         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 417                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 418
 419         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 420         if (IS_LOCAL(user))
 421         {
 422                 if (Ptr->topicset)
 423                 {
 424                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 425                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 426                 }
 427                 Ptr->UserList(user);
 428         }
 429         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr));
 430         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user,Ptr));
 431         return Ptr;
 432 }
 433
 434 bool chanrec::IsBanned(userrec* user)
 435 {
 436         char mask[MAXBUF];
 437         int MOD_RESULT = 0;
 438         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 439         if (!MOD_RESULT)
 440         {
 441                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 442                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 443                 {
 444                         /* This allows CIDR ban matching
 445                          *
 446                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 447                          */
 448                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 449                         {
 450                                 return true;
 451                         }
 452                 }
 453         }
 454         return false;
 455 }
 456
 457 /* chanrec::PartUser
 458  * remove a channel from a users record, and return the number of users left.
 459  * Therefore, if this function returns 0 the caller should delete the chanrec.
 460  */
 461 long chanrec::PartUser(userrec *user, const char* reason)
 462 {
 463         if (!user)
 464                 return this->GetUserCounter();
 465
 466         for (unsigned int i =0; i < user->chans.size(); i++)
 467         {
 468                 /* zap it from the channel list of the user */
 469                 if (user->chans[i]->channel == this)
 470                 {
 471                         FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : ""));
 472                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 473                         user->chans[i]->uc_modes = 0;
 474                         user->chans[i]->channel = NULL;
 475                         user->ModChannelCount(-1);
 476                         this->RemoveAllPrefixes(user);
 477                         break;
 478                 }
 479         }
 480
 481         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 482         {
 483                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 484                 /* kill the record */
 485                 if (iter != ServerInstance->chanlist.end())
 486                 {
 487                         ServerInstance->Log(DEBUG,"del_channel: destroyed: %s", this->name);
 488                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 489                         ServerInstance->chanlist.erase(iter);
 490                 }
 491                 return 0;
 492         }
 493
 494         return this->GetUserCounter();
 495 }
 496
 497 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 498 {
 499         if (!user || !reason)
 500                 return this->GetUserCounter();
 501
 502         if (IS_LOCAL(user))
 503         {
 504                 if (!this->HasUser(user))
 505                 {
 506                         /* Not on channel */
 507                         return this->GetUserCounter();
 508                 }
 509         }
 510
 511         if (triggerevents)
 512         {
 513                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason));
 514         }
 515
 516         for (unsigned int i =0; i < user->chans.size(); i++)
 517         {
 518                 if (user->chans[i]->channel == this)
 519                 {
 520                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 521                         user->chans[i]->uc_modes = 0;
 522                         user->chans[i]->channel = NULL;
 523                         this->RemoveAllPrefixes(user);
 524                         break;
 525                 }
 526         }
 527
 528         if (!this->DelUser(user))
 529         {
 530                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 531                 /* kill the record */
 532                 if (iter != ServerInstance->chanlist.end())
 533                 {
 534                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 535                         ServerInstance->chanlist.erase(iter);
 536                 }
 537                 return 0;
 538         }
 539
 540         return this->GetUserCounter();
 541 }
 542
 543 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 544 {
 545         if (!src || !user || !reason)
 546                 return this->GetUserCounter();
 547
 548         if (IS_LOCAL(src))
 549         {
 550                 if (!this->HasUser(user))
 551                 {
 552                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 553                         return this->GetUserCounter();
 554                 }
 555                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 556                 {
 557                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 558                         return this->GetUserCounter();
 559                 }
 560                 int MOD_RESULT = 0;
 561
 562                 if (!ServerInstance->ULine(src->server))
 563                 {
 564                         MOD_RESULT = 0;
 565                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 566                         if (MOD_RESULT == 1)
 567                                 return this->GetUserCounter();
 568                 }
 569                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 570                 if (MOD_RESULT != -1)
 571                 {
 572                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 573                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 574                                 return this->GetUserCounter();
 575
 576                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 577                         {
 578                                 int them = this->GetStatus(src);
 579                                 int us = this->GetStatus(user);
 580                                 if ((them < STATUS_HOP) || (them < us))
 581                                 {
 582                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 583                                         return this->GetUserCounter();
 584                                 }
 585                         }
 586                 }
 587         }
 588
 589         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason));
 590
 591         for (UserChanList::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 592         {
 593                 /* zap it from the channel list of the user */
 594                 if ((*i)->channel == this)
 595                 {
 596                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 597                         (*i)->uc_modes = 0;
 598                         (*i)->channel = NULL;
 599                         this->RemoveAllPrefixes(user);
 600                         break;
 601                 }
 602         }
 603
 604         if (!this->DelUser(user))
 605         /* if there are no users left on the channel */
 606         {
 607                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 608
 609                 /* kill the record */
 610                 if (iter != ServerInstance->chanlist.end())
 611                 {
 612                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 613                         ServerInstance->chanlist.erase(iter);
 614                 }
 615                 return 0;
 616         }
 617
 618         return this->GetUserCounter();
 619 }
 620
 621 void chanrec::WriteChannel(userrec* user, char* text, ...)
 622 {
 623         char textbuffer[MAXBUF];
 624         va_list argsPtr;
 625
 626         if (!user || !text)
 627                 return;
 628
 629         va_start(argsPtr, text);
 630         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 631         va_end(argsPtr);
 632
 633         this->WriteChannel(user, std::string(textbuffer));
 634 }
 635
 636 void chanrec::WriteChannel(userrec* user, const std::string &text)
 637 {
 638         CUList *ulist = this->GetUsers();
 639
 640         if (!user)
 641                 return;
 642
 643         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 644         {
 645                 if (IS_LOCAL(i->second))
 646                         user->WriteTo(i->second,text);
 647         }
 648 }
 649
 650 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 651 {
 652         char textbuffer[MAXBUF];
 653         va_list argsPtr;
 654
 655         if (!text)
 656                 return;
 657
 658         va_start(argsPtr, text);
 659         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 660         va_end(argsPtr);
 661
 662         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 663 }
 664
 665 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 666 {
 667         CUList *ulist = this->GetUsers();
 668
 669         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 670         {
 671                 if (IS_LOCAL(i->second))
 672                         i->second->WriteServ(text);
 673         }
 674 }
 675
 676 /* write formatted text from a source user to all users on a channel except
 677  * for the sender (for privmsg etc) */
 678 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 679 {
 680         char textbuffer[MAXBUF];
 681         va_list argsPtr;
 682
 683         if (!text)
 684                 return;
 685
 686         va_start(argsPtr, text);
 687         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 688         va_end(argsPtr);
 689
 690         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 691 }
 692
 693 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 694 {
 695         CUList *ulist;
 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         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 714         {
 715                 if ((IS_LOCAL(i->second)) && (user != i->second))
 716                 {
 717                         if (serversource)
 718                                 i->second->WriteServ(text);
 719                         else
 720                                 i->second->WriteFrom(user,text);
 721                 }
 722         }
 723 }
 724
 725 /*
 726  * return a count of the users on a specific channel accounting for
 727  * invisible users who won't increase the count. e.g. for /LIST
 728  */
 729 int chanrec::CountInvisible()
 730 {
 731         int count = 0;
 732         CUList *ulist= this->GetUsers();
 733         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 734         {
 735                 if (!(i->second->modes[UM_INVISIBLE]))
 736                         count++;
 737         }
 738
 739         return count;
 740 }
 741
 742 char* chanrec::ChanModes(bool showkey)
 743 {
 744         static char scratch[MAXBUF];
 745         static char sparam[MAXBUF];
 746         char* offset = scratch;
 747         std::string extparam = "";
 748
 749         *scratch = '\0';
 750         *sparam = '\0';
 751
 752         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 753         for(int n = 0; n < 64; n++)
 754         {
 755                 if(this->modes[n])
 756                 {
 757                         *offset++ = n + 65;
 758                         extparam = "";
 759                         switch (n)
 760                         {
 761                                 case CM_KEY:
 762                                         extparam = (showkey ? this->key : "<key>");
 763                                 break;
 764                                 case CM_LIMIT:
 765                                         extparam = ConvToStr(this->limit);
 766                                 break;
 767                                 case CM_NOEXTERNAL:
 768                                 case CM_TOPICLOCK:
 769                                 case CM_INVITEONLY:
 770                                 case CM_MODERATED:
 771                                 case CM_SECRET:
 772                                 case CM_PRIVATE:
 773                                         /* We know these have no parameters */
 774                                 break;
 775                                 default:
 776                                         extparam = this->GetModeParameter(n + 65);
 777                                 break;
 778                         }
 779                         if (extparam != "")
 780                         {
 781                                 charlcat(sparam,' ',MAXBUF);
 782                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 783                         }
 784                 }
 785         }
 786
 787         /* Null terminate scratch */
 788         *offset = '\0';
 789         strlcat(scratch,sparam,MAXBUF);
 790         return scratch;
 791 }
 792
 793 /* compile a userlist of a channel into a string, each nick seperated by
 794  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 795  */
 796 void chanrec::UserList(userrec *user)
 797 {
 798         char list[MAXBUF];
 799         size_t dlen, curlen;
 800         int MOD_RESULT = 0;
 801
 802         if (!IS_LOCAL(user))
 803                 return;
 804
 805         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 806         ServerInstance->Log(DEBUG,"MOD_RESULT for UserList = %d",MOD_RESULT);
 807         if (MOD_RESULT == 1)
 808                 return;
 809
 810         ServerInstance->Log(DEBUG,"Using builtin NAMES list generation");
 811
 812         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 813
 814         int numusers = 0;
 815         char* ptr = list + dlen;
 816
 817         CUList *ulist= this->GetUsers();
 818
 819         /* Improvement by Brain - this doesnt change in value, so why was it inside
 820          * the loop?
 821          */
 822         bool has_user = this->HasUser(user);
 823
 824         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 825         {
 826                 if ((!has_user) && (i->second->modes[UM_INVISIBLE]))
 827                 {
 828                         /*
 829                          * user is +i, and source not on the channel, does not show
 830                          * nick in NAMES list
 831                          */
 832                         continue;
 833                 }
 834
 835                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 836
 837                 curlen += ptrlen;
 838                 ptr += ptrlen;
 839
 840                 numusers++;
 841
 842                 if (curlen > (480-NICKMAX))
 843                 {
 844                         /* list overflowed into multiple numerics */
 845                         user->WriteServ(std::string(list));
 846
 847                         /* reset our lengths */
 848                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 849                         ptr = list + dlen;
 850
 851                         ptrlen = 0;
 852                         numusers = 0;
 853                 }
 854         }
 855
 856         /* if whats left in the list isnt empty, send it */
 857         if (numusers)
 858         {
 859                 user->WriteServ(std::string(list));
 860         }
 861
 862         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 863 }
 864
 865 long chanrec::GetMaxBans()
 866 {
 867         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 868         {
 869                 if (match(this->name,n->first.c_str()))
 870                 {
 871                         return n->second;
 872                 }
 873         }
 874         return 64;
 875 }
 876
 877
 878 /* returns the status character for a given user on a channel, e.g. @ for op,
 879  * % for halfop etc. If the user has several modes set, the highest mode
 880  * the user has must be returned.
 881  */
 882 const char* chanrec::GetPrefixChar(userrec *user)
 883 {
 884         static char pf[2] = {0, 0};
 885
 886         prefixlist::iterator n = prefixes.find(user);
 887         if (n != prefixes.end())
 888         {
 889                 if (n->second.size())
 890                 {
 891                         /* If the user has any prefixes, their highest prefix
 892                          * will always be at the head of the list, as the list is
 893                          * sorted in rank order highest first (see SetPrefix()
 894                          * for reasons why)
 895                          */
 896                         *pf = n->second.begin()->first;
 897                         return pf;
 898                 }
 899         }
 900
 901         *pf = 0;
 902         return pf;
 903 }
 904
 905 const char* chanrec::GetAllPrefixChars(userrec* user)
 906 {
 907         static char prefix[MAXBUF];
 908         int ctr = 0;
 909         *prefix = 0;
 910
 911         prefixlist::iterator n = prefixes.find(user);
 912         if (n != prefixes.end())
 913         {
 914                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 915                 {
 916                         prefix[ctr++] = x->first;
 917                 }
 918         }
 919
 920         prefix[ctr] = 0;
 921
 922         return prefix;
 923 }
 924
 925 unsigned int chanrec::GetPrefixValue(userrec* user)
 926 {
 927         prefixlist::iterator n = prefixes.find(user);
 928         if (n != prefixes.end())
 929         {
 930                 if (n->second.size())
 931                         return n->second.begin()->second;
 932         }
 933         return 0;
 934 }
 935
 936
 937 int chanrec::GetStatusFlags(userrec *user)
 938 {
 939         for (std::vector<ucrec*>::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 940         {
 941                 if ((*i)->channel == this)
 942                 {
 943                         return (*i)->uc_modes;
 944                 }
 945         }
 946         return 0;
 947 }
 948
 949
 950 int chanrec::GetStatus(userrec *user)
 951 {
 952         if (ServerInstance->ULine(user->server))
 953                 return STATUS_OP;
 954
 955         for (std::vector<ucrec*>::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 956         {
 957                 if ((*i)->channel == this)
 958                 {
 959                         if (((*i)->uc_modes & UCMODE_OP) > 0)
 960                         {
 961                                 return STATUS_OP;
 962                         }
 963                         if (((*i)->uc_modes & UCMODE_HOP) > 0)
 964                         {
 965                                 return STATUS_HOP;
 966                         }
 967                         if (((*i)->uc_modes & UCMODE_VOICE) > 0)
 968                         {
 969                                 return STATUS_VOICE;
 970                         }
 971                         return STATUS_NORMAL;
 972                 }
 973         }
 974         return STATUS_NORMAL;
 975 }
 976
 977 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
 978 {
 979         prefixlist::iterator n = prefixes.find(user);
 980         prefixtype pfx = std::make_pair(prefix,prefix_value);
 981         if (adding)
 982         {
 983                 if (n != prefixes.end())
 984                 {
 985                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
 986                         {
 987                                 n->second.push_back(pfx);
 988                                 /* We must keep prefixes in rank order, largest first.
 989                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
 990                                  * state, and secondly it turns out to be a benefit to us later.
 991                                  * See above in GetPrefix().
 992                                  */
 993                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
 994                         }
 995                 }
 996                 else
 997                 {
 998                         pfxcontainer one;
 999                         one.push_back(pfx);
1000                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1001                 }
1002         }
1003         else
1004         {
1005                 if (n != prefixes.end())
1006                 {
1007                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1008                         if (x != n->second.end())
1009                                 n->second.erase(x);
1010                 }
1011         }
1012 }
1013
1014 void chanrec::RemoveAllPrefixes(userrec* user)
1015 {
1016         prefixlist::iterator n = prefixes.find(user);
1017         if (n != prefixes.end())
1018                 prefixes.erase(n);
1019 }
1020