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                                         MOD_RESULT = 0;
 305                                         FOREACH_RESULT_I(Instance,I_OnCheckBan,OnCheckBan(user, Ptr));
 306                                         char mask[MAXBUF];
 307                                         snprintf(mask, MAXBUF, "%s!%s@%s",user->nick, user->ident, user->GetIPString());
 308                                         if (!MOD_RESULT)
 309                                         {
 310                                                 if (Ptr->IsBanned(user))
 311                                                 {
 312                                                         user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 313                                                         return NULL;
 314                                                 }
 315                                         }
 316                                 }
 317                         }
 318                 }
 319                 else
 320                 {
 321                         Instance->Log(DEBUG,"chanrec::JoinUser(): Overridden checks");
 322                 }
 323         }
 324
 325         for (UserChanList::const_iterator index = user->chans.begin(); index != user->chans.end(); index++)
 326         {
 327                 if ((*index)->channel == NULL)
 328                 {
 329                         return chanrec::ForceChan(Instance, Ptr, *index, user, privs);
 330                 }
 331         }
 332
 333         /*
 334          * XXX: If the user is an oper here, we can just extend their user->chans vector by one
 335          * and put the channel in here. Same for remote users which are not bound by
 336          * the channel limits. Otherwise, nope, youre boned.
 337          */
 338         if (!IS_LOCAL(user)) /* was a check on fd < 0 */
 339         {
 340                 ucrec* a = new ucrec();
 341                 chanrec* c = chanrec::ForceChan(Instance, Ptr, a, user, privs);
 342                 user->chans.push_back(a);
 343                 return c;
 344         }
 345         else if (*user->oper)
 346         {
 347                 /* Oper allows extension up to the OPERMAXCHANS value */
 348                 if (user->chans.size() < OPERMAXCHANS)
 349                 {
 350                         ucrec* a = new ucrec();
 351                         chanrec* c = chanrec::ForceChan(Instance, Ptr, a, user, privs);
 352                         user->chans.push_back(a);
 353                         return c;
 354                 }
 355         }
 356
 357         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 358
 359         if (new_channel)
 360         {
 361                 Instance->Log(DEBUG,"BLAMMO, Whacking channel.");
 362                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 363                 chan_hash::iterator n = Instance->chanlist.find(cname);
 364                 if (n != Instance->chanlist.end())
 365                 {
 366                         Ptr->DelUser(user);
 367                         DELETE(Ptr);
 368                         Instance->chanlist.erase(n);
 369                         for (unsigned int index =0; index < user->chans.size(); index++)
 370                         {
 371                                 if (user->chans[index]->channel == Ptr)
 372                                 {
 373                                         user->chans[index]->channel = NULL;
 374                                         user->chans[index]->uc_modes = 0;
 375                                 }
 376                         }
 377                 }
 378         }
 379         else
 380         {
 381                 for (unsigned int index =0; index < user->chans.size(); index++)
 382                 {
 383                         if (user->chans[index]->channel == Ptr)
 384                         {
 385                                 user->chans[index]->channel = NULL;
 386                                 user->chans[index]->uc_modes = 0;
 387                         }
 388                 }
 389         }
 390         return NULL;
 391 }
 392
 393 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr,ucrec *a,userrec* user, const std::string &privs)
 394 {
 395         a->uc_modes = 0;
 396
 397         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 398         {
 399                 const char status = *x;
 400                 switch (status)
 401                 {
 402                         case '@':
 403                                 a->uc_modes |= UCMODE_OP;
 404                         break;
 405                         case '%':
 406                                 a->uc_modes |= UCMODE_HOP;
 407                         break;
 408                         case '+':
 409                                 a->uc_modes |= UCMODE_VOICE;
 410                         break;
 411                 }
 412                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 413                 if (mh)
 414                 {
 415                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 416                 }
 417         }
 418
 419         a->channel = Ptr;
 420         Ptr->AddUser(user);
 421         user->ModChannelCount(1);
 422         Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 423
 424         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 425         std::string ms = Instance->Modes->ModeString(user, Ptr);
 426         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 427                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 428
 429         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 430         if (IS_LOCAL(user))
 431         {
 432                 if (Ptr->topicset)
 433                 {
 434                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 435                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 436                 }
 437                 Ptr->UserList(user);
 438         }
 439         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr));
 440         return Ptr;
 441 }
 442
 443 bool chanrec::IsBanned(userrec* user)
 444 {
 445         char mask[MAXBUF];
 446         snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 447         for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 448         {
 449                 /* This allows CIDR ban matching
 450                  *
 451                  *        Full masked host                      Full unmasked host                   IP with/without CIDR
 452                  */
 453                 if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 454                 {
 455                         return true;
 456                 }
 457
 458         }
 459         return false;
 460 }
 461
 462 /* chanrec::PartUser
 463  * remove a channel from a users record, and remove the record from the hash
 464  * if the channel has become empty
 465  */
 466 long chanrec::PartUser(userrec *user, const char* reason)
 467 {
 468         if (!user)
 469                 return this->GetUserCounter();
 470
 471         for (unsigned int i =0; i < user->chans.size(); i++)
 472         {
 473                 /* zap it from the channel list of the user */
 474                 if (user->chans[i]->channel == this)
 475                 {
 476                         if (reason)
 477                         {
 478                                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason));
 479                                 this->WriteChannel(user, "PART %s :%s", this->name, reason);
 480                         }
 481                         else
 482                         {
 483                                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, ""));
 484                                 this->WriteChannel(user, "PART :%s", this->name);
 485                         }
 486                         user->chans[i]->uc_modes = 0;
 487                         user->chans[i]->channel = NULL;
 488                         user->ModChannelCount(-1);
 489                         this->RemoveAllPrefixes(user);
 490                         break;
 491                 }
 492         }
 493
 494         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 495         {
 496                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 497                 /* kill the record */
 498                 if (iter != ServerInstance->chanlist.end())
 499                 {
 500                         ServerInstance->Log(DEBUG,"del_channel: destroyed: %s", this->name);
 501                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 502                         ServerInstance->chanlist.erase(iter);
 503                 }
 504                 return 0;
 505         }
 506
 507         return this->GetUserCounter();
 508 }
 509
 510 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 511 {
 512         if (!user || !reason)
 513                 return this->GetUserCounter();
 514
 515         if (IS_LOCAL(user))
 516         {
 517                 if (!this->HasUser(user))
 518                 {
 519                         /* Not on channel */
 520                         return this->GetUserCounter();
 521                 }
 522         }
 523
 524         if (triggerevents)
 525         {
 526                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason));
 527         }
 528
 529         for (unsigned int i =0; i < user->chans.size(); i++)
 530         {
 531                 if (user->chans[i]->channel == this)
 532                 {
 533                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 534                         user->chans[i]->uc_modes = 0;
 535                         user->chans[i]->channel = NULL;
 536                         this->RemoveAllPrefixes(user);
 537                         break;
 538                 }
 539         }
 540
 541         if (!this->DelUser(user))
 542         {
 543                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 544                 /* kill the record */
 545                 if (iter != ServerInstance->chanlist.end())
 546                 {
 547                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 548                         ServerInstance->chanlist.erase(iter);
 549                 }
 550                 return 0;
 551         }
 552
 553         return this->GetUserCounter();
 554 }
 555
 556 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 557 {
 558         if (!src || !user || !reason)
 559                 return this->GetUserCounter();
 560
 561         if (IS_LOCAL(src))
 562         {
 563                 if (!this->HasUser(user))
 564                 {
 565                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 566                         return this->GetUserCounter();
 567                 }
 568                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 569                 {
 570                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 571                         return this->GetUserCounter();
 572                 }
 573                 int MOD_RESULT = 0;
 574
 575                 if (!ServerInstance->ULine(src->server))
 576                 {
 577                         MOD_RESULT = 0;
 578                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 579                         if (MOD_RESULT == 1)
 580                                 return this->GetUserCounter();
 581                 }
 582                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 583                 if (MOD_RESULT != -1)
 584                 {
 585                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 586                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 587                                 return this->GetUserCounter();
 588
 589                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 590                         {
 591                                 int them = this->GetStatus(src);
 592                                 int us = this->GetStatus(user);
 593                                 if ((them < STATUS_HOP) || (them < us))
 594                                 {
 595                                         if (them == STATUS_HOP)
 596                                         {
 597                                                 src->WriteServ("482 %s %s :You must be a channel operator",src->nick, this->name);
 598                                         }
 599                                         else
 600                                         {
 601                                                 src->WriteServ("482 %s %s :You must be at least a half-operator",src->nick, this->name);
 602                                         }
 603                                         return this->GetUserCounter();
 604                                 }
 605                         }
 606                 }
 607         }
 608
 609         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason));
 610
 611         for (UserChanList::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 612         {
 613                 /* zap it from the channel list of the user */
 614                 if ((*i)->channel == this)
 615                 {
 616                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 617                         (*i)->uc_modes = 0;
 618                         (*i)->channel = NULL;
 619                         this->RemoveAllPrefixes(user);
 620                         break;
 621                 }
 622         }
 623
 624         if (!this->DelUser(user))
 625         /* if there are no users left on the channel */
 626         {
 627                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 628
 629                 /* kill the record */
 630                 if (iter != ServerInstance->chanlist.end())
 631                 {
 632                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 633                         ServerInstance->chanlist.erase(iter);
 634                 }
 635                 return 0;
 636         }
 637
 638         return this->GetUserCounter();
 639 }
 640
 641 void chanrec::WriteChannel(userrec* user, char* text, ...)
 642 {
 643         char textbuffer[MAXBUF];
 644         va_list argsPtr;
 645
 646         if (!user || !text)
 647                 return;
 648
 649         va_start(argsPtr, text);
 650         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 651         va_end(argsPtr);
 652
 653         this->WriteChannel(user, std::string(textbuffer));
 654 }
 655
 656 void chanrec::WriteChannel(userrec* user, const std::string &text)
 657 {
 658         CUList *ulist = this->GetUsers();
 659
 660         if (!user)
 661                 return;
 662
 663         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 664         {
 665                 if (IS_LOCAL(i->second))
 666                         user->WriteTo(i->second,text);
 667         }
 668 }
 669
 670 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 671 {
 672         char textbuffer[MAXBUF];
 673         va_list argsPtr;
 674
 675         if (!text)
 676                 return;
 677
 678         va_start(argsPtr, text);
 679         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 680         va_end(argsPtr);
 681
 682         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 683 }
 684
 685 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 686 {
 687         CUList *ulist = this->GetUsers();
 688
 689         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 690         {
 691                 if (IS_LOCAL(i->second))
 692                         i->second->WriteServ(text);
 693         }
 694 }
 695
 696 /* write formatted text from a source user to all users on a channel except
 697  * for the sender (for privmsg etc) */
 698 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 699 {
 700         char textbuffer[MAXBUF];
 701         va_list argsPtr;
 702
 703         if (!text)
 704                 return;
 705
 706         va_start(argsPtr, text);
 707         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 708         va_end(argsPtr);
 709
 710         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 711 }
 712
 713 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 714 {
 715         CUList *ulist;
 716
 717         switch (status)
 718         {
 719                 case '@':
 720                         ulist = this->GetOppedUsers();
 721                         break;
 722                 case '%':
 723                         ulist = this->GetHalfoppedUsers();
 724                         break;
 725                 case '+':
 726                         ulist = this->GetVoicedUsers();
 727                         break;
 728                 default:
 729                         ulist = this->GetUsers();
 730                         break;
 731         }
 732
 733         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 734         {
 735                 if ((IS_LOCAL(i->second)) && (user != i->second))
 736                 {
 737                         if (serversource)
 738                                 i->second->WriteServ(text);
 739                         else
 740                                 i->second->WriteFrom(user,text);
 741                 }
 742         }
 743 }
 744
 745 /*
 746  * return a count of the users on a specific channel accounting for
 747  * invisible users who won't increase the count. e.g. for /LIST
 748  */
 749 int chanrec::CountInvisible()
 750 {
 751         int count = 0;
 752         CUList *ulist= this->GetUsers();
 753         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 754         {
 755                 if (!(i->second->modes[UM_INVISIBLE]))
 756                         count++;
 757         }
 758
 759         return count;
 760 }
 761
 762 char* chanrec::ChanModes(bool showkey)
 763 {
 764         static char scratch[MAXBUF];
 765         static char sparam[MAXBUF];
 766         char* offset = scratch;
 767         std::string extparam = "";
 768
 769         *scratch = '\0';
 770         *sparam = '\0';
 771
 772         /* This was still iterating up to 190, chanrec::custom_modes is only 64 elements -- Om */
 773         for(int n = 0; n < 64; n++)
 774         {
 775                 if(this->modes[n])
 776                 {
 777                         *offset++ = n + 65;
 778                         extparam = "";
 779                         switch (n)
 780                         {
 781                                 case CM_KEY:
 782                                         extparam = (showkey ? this->key : "<key>");
 783                                 break;
 784                                 case CM_LIMIT:
 785                                         extparam = ConvToStr(this->limit);
 786                                 break;
 787                                 case CM_NOEXTERNAL:
 788                                 case CM_TOPICLOCK:
 789                                 case CM_INVITEONLY:
 790                                 case CM_MODERATED:
 791                                 case CM_SECRET:
 792                                 case CM_PRIVATE:
 793                                         /* We know these have no parameters */
 794                                 break;
 795                                 default:
 796                                         extparam = this->GetModeParameter(n + 65);
 797                                 break;
 798                         }
 799                         if (extparam != "")
 800                         {
 801                                 charlcat(sparam,' ',MAXBUF);
 802                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 803                         }
 804                 }
 805         }
 806
 807         /* Null terminate scratch */
 808         *offset = '\0';
 809         strlcat(scratch,sparam,MAXBUF);
 810         return scratch;
 811 }
 812
 813 /* compile a userlist of a channel into a string, each nick seperated by
 814  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 815  */
 816 void chanrec::UserList(userrec *user)
 817 {
 818         char list[MAXBUF];
 819         size_t dlen, curlen;
 820         int MOD_RESULT = 0;
 821
 822         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 823         ServerInstance->Log(DEBUG,"MOD_RESULT for UserList = %d",MOD_RESULT);
 824         if (MOD_RESULT == 1)
 825                 return;
 826
 827         ServerInstance->Log(DEBUG,"Using builtin NAMES list generation");
 828
 829         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 830
 831         int numusers = 0;
 832         char* ptr = list + dlen;
 833
 834         CUList *ulist= this->GetUsers();
 835
 836         /* Improvement by Brain - this doesnt change in value, so why was it inside
 837          * the loop?
 838          */
 839         bool has_user = this->HasUser(user);
 840
 841         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 842         {
 843                 if ((!has_user) && (i->second->modes[UM_INVISIBLE]))
 844                 {
 845                         /*
 846                          * user is +i, and source not on the channel, does not show
 847                          * nick in NAMES list
 848                          */
 849                         continue;
 850                 }
 851
 852                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 853
 854                 curlen += ptrlen;
 855                 ptr += ptrlen;
 856
 857                 numusers++;
 858
 859                 if (curlen > (480-NICKMAX))
 860                 {
 861                         /* list overflowed into multiple numerics */
 862                         user->WriteServ(std::string(list));
 863
 864                         /* reset our lengths */
 865                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 866                         ptr = list + dlen;
 867
 868                         ptrlen = 0;
 869                         numusers = 0;
 870                 }
 871         }
 872
 873         /* if whats left in the list isnt empty, send it */
 874         if (numusers)
 875         {
 876                 user->WriteServ(std::string(list));
 877         }
 878
 879         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 880 }
 881
 882 long chanrec::GetMaxBans()
 883 {
 884         std::string x;
 885         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 886         {
 887                 x = n->first;
 888                 if (match(this->name,x.c_str()))
 889                 {
 890                         return n->second;
 891                 }
 892         }
 893         return 64;
 894 }
 895
 896
 897 /* returns the status character for a given user on a channel, e.g. @ for op,
 898  * % for halfop etc. If the user has several modes set, the highest mode
 899  * the user has must be returned.
 900  */
 901 const char* chanrec::GetPrefixChar(userrec *user)
 902 {
 903         static char px[2];
 904         unsigned int mx = 0;
 905
 906         *px = 0;
 907         *(px+1) = 0;
 908
 909         prefixlist::iterator n = prefixes.find(user);
 910         if (n != prefixes.end())
 911         {
 912                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 913                 {
 914                         if (x->second > mx)
 915                         {
 916                                 *px = x->first;
 917                                 mx  = x->second;
 918                         }
 919                 }
 920         }
 921
 922         return px;
 923 }
 924
 925 const char* chanrec::GetAllPrefixChars(userrec* user)
 926 {
 927         static char prefix[MAXBUF];
 928         int ctr = 0;
 929         *prefix = 0;
 930
 931         prefixlist::iterator n = prefixes.find(user);
 932         if (n != prefixes.end())
 933         {
 934                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 935                 {
 936                         prefix[ctr++] = x->first;
 937                 }
 938         }
 939
 940         prefix[ctr] = 0;
 941
 942         return prefix;
 943 }
 944
 945 unsigned int chanrec::GetPrefixValue(userrec* user)
 946 {
 947         unsigned int mx = 0;
 948
 949         prefixlist::iterator n = prefixes.find(user);
 950         if (n != prefixes.end())
 951         {
 952                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 953                 {
 954                         if (x->second > mx)
 955                                 mx  = x->second;
 956                 }
 957         }
 958
 959         return mx;
 960 }
 961
 962
 963 int chanrec::GetStatusFlags(userrec *user)
 964 {
 965         for (std::vector<ucrec*>::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 966         {
 967                 if ((*i)->channel == this)
 968                 {
 969                         return (*i)->uc_modes;
 970                 }
 971         }
 972         return 0;
 973 }
 974
 975
 976 int chanrec::GetStatus(userrec *user)
 977 {
 978         if (ServerInstance->ULine(user->server))
 979                 return STATUS_OP;
 980
 981         for (std::vector<ucrec*>::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
 982         {
 983                 if ((*i)->channel == this)
 984                 {
 985                         if (((*i)->uc_modes & UCMODE_OP) > 0)
 986                         {
 987                                 return STATUS_OP;
 988                         }
 989                         if (((*i)->uc_modes & UCMODE_HOP) > 0)
 990                         {
 991                                 return STATUS_HOP;
 992                         }
 993                         if (((*i)->uc_modes & UCMODE_VOICE) > 0)
 994                         {
 995                                 return STATUS_VOICE;
 996                         }
 997                         return STATUS_NORMAL;
 998                 }
 999         }
1000         return STATUS_NORMAL;
1001 }
1002
1003 /*bool ModeParser::PrefixComparison(const prefixtype one, const prefixtype two)
1004 {
1005         return one.second > two.second;
1006 }*/
1007
1008 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1009 {
1010         prefixlist::iterator n = prefixes.find(user);
1011         prefixtype pfx = std::make_pair(prefix,prefix_value);
1012         if (adding)
1013         {
1014                 if (n != prefixes.end())
1015                 {
1016                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1017                         {
1018                                 n->second.push_back(pfx);
1019                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1020                         }
1021                 }
1022                 else
1023                 {
1024                         pfxcontainer one;
1025                         one.push_back(pfx);
1026                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1027                 }
1028         }
1029         else
1030         {
1031                 if (n != prefixes.end())
1032                 {
1033                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1034                         if (x != n->second.end())
1035                                 n->second.erase(x);
1036                 }
1037         }
1038 }
1039
1040 void chanrec::RemoveAllPrefixes(userrec* user)
1041 {
1042         prefixlist::iterator n = prefixes.find(user);
1043         if (n != prefixes.end())
1044                 prefixes.erase(n);
1045 }
1046