src/channels.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include <stdarg.h>
  16 #include "configreader.h"
  17 #include "users.h"
  18 #include "modules.h"
  19 #include "wildcard.h"
  20 #include "mode.h"
  21
  22 chanrec::chanrec(InspIRCd* Instance) : ServerInstance(Instance)
  23 {
  24         *name = *topic = *setby = *key = 0;
  25         maxbans = created = topicset = limit = 0;
  26         memset(&modes,0,64);
  27         age = ServerInstance->Time(true);
  28 }
  29
  30 void chanrec::SetMode(char mode,bool mode_on)
  31 {
  32         modes[mode-65] = mode_on;
  33         if (!mode_on)
  34                 this->SetModeParam(mode,"",false);
  35 }
  36
  37
  38 void chanrec::SetModeParam(char mode,const char* parameter,bool mode_on)
  39 {
  40         CustomModeList::iterator n = custom_mode_params.find(mode);
  41
  42         if (mode_on)
  43         {
  44                 if (n == custom_mode_params.end())
  45                         custom_mode_params[mode] = strdup(parameter);
  46
  47                 /* TODO: We really need to do away with this in 1.2 */
  48                 if (mode == 'l')
  49                         this->limit = atoi(parameter);
  50                 else if (mode == 'k')
  51                         strlcpy(this->key, parameter, sizeof(this->key));
  52         }
  53         else
  54         {
  55                 if (n != custom_mode_params.end())
  56                 {
  57                         free(n->second);
  58                         custom_mode_params.erase(n);
  59                 }
  60
  61                 /* TODO: See above */
  62                 if (mode == 'l')
  63                         this->limit = 0;
  64                 else if (mode == 'k')
  65                         *this->key = 0;
  66         }
  67 }
  68
  69 bool chanrec::IsModeSet(char mode)
  70 {
  71         return modes[mode-65];
  72 }
  73
  74 std::string chanrec::GetModeParameter(char mode)
  75 {
  76         switch (mode)
  77         {
  78                 case 'k':
  79                         return this->key;
  80                 case 'l':
  81                         return ConvToStr(this->limit);
  82                 default:
  83                         CustomModeList::iterator n = custom_mode_params.find(mode);
  84                         if (n != custom_mode_params.end())
  85                                 return n->second;
  86                         return "";
  87                 break;
  88         }
  89 }
  90
  91 long chanrec::GetUserCounter()
  92 {
  93         return (this->internal_userlist.size());
  94 }
  95
  96 void chanrec::AddUser(userrec* user)
  97 {
  98         internal_userlist[user] = user->nick;
  99 }
 100
 101 unsigned long chanrec::DelUser(userrec* user)
 102 {
 103         CUListIter a = internal_userlist.find(user);
 104
 105         if (a != internal_userlist.end())
 106         {
 107                 internal_userlist.erase(a);
 108                 /* And tidy any others... */
 109                 DelOppedUser(user);
 110                 DelHalfoppedUser(user);
 111                 DelVoicedUser(user);
 112         }
 113
 114         return internal_userlist.size();
 115 }
 116
 117 bool chanrec::HasUser(userrec* user)
 118 {
 119         return (internal_userlist.find(user) != internal_userlist.end());
 120 }
 121
 122 void chanrec::AddOppedUser(userrec* user)
 123 {
 124         internal_op_userlist[user] = user->nick;
 125 }
 126
 127 void chanrec::DelOppedUser(userrec* user)
 128 {
 129         CUListIter a = internal_op_userlist.find(user);
 130         if (a != internal_op_userlist.end())
 131         {
 132                 internal_op_userlist.erase(a);
 133                 return;
 134         }
 135 }
 136
 137 void chanrec::AddHalfoppedUser(userrec* user)
 138 {
 139         internal_halfop_userlist[user] = user->nick;
 140 }
 141
 142 void chanrec::DelHalfoppedUser(userrec* user)
 143 {
 144         CUListIter a = internal_halfop_userlist.find(user);
 145
 146         if (a != internal_halfop_userlist.end())
 147         {
 148                 internal_halfop_userlist.erase(a);
 149         }
 150 }
 151
 152 void chanrec::AddVoicedUser(userrec* user)
 153 {
 154         internal_voice_userlist[user] = user->nick;
 155 }
 156
 157 void chanrec::DelVoicedUser(userrec* user)
 158 {
 159         CUListIter a = internal_voice_userlist.find(user);
 160
 161         if (a != internal_voice_userlist.end())
 162         {
 163                 internal_voice_userlist.erase(a);
 164         }
 165 }
 166
 167 CUList* chanrec::GetUsers()
 168 {
 169         return &internal_userlist;
 170 }
 171
 172 CUList* chanrec::GetOppedUsers()
 173 {
 174         return &internal_op_userlist;
 175 }
 176
 177 CUList* chanrec::GetHalfoppedUsers()
 178 {
 179         return &internal_halfop_userlist;
 180 }
 181
 182 CUList* chanrec::GetVoicedUsers()
 183 {
 184         return &internal_voice_userlist;
 185 }
 186
 187 void chanrec::SetDefaultModes()
 188 {
 189         irc::spacesepstream list(ServerInstance->Config->DefaultModes);
 190         std::string modeseq = list.GetToken();
 191
 192         for (std::string::iterator n = modeseq.begin(); n != modeseq.end(); ++n)
 193         {
 194                 ModeHandler* mode = ServerInstance->Modes->FindMode(*n, MODETYPE_CHANNEL);
 195                 if (mode)
 196                 {
 197                         this->SetMode(*n, true);
 198                         if (mode->GetNumParams(true))
 199                                 this->SetModeParam(*n, list.GetToken().c_str(), true);
 200                 }
 201         }
 202 }
 203
 204 /*
 205  * add a channel to a user, creating the record for it if needed and linking
 206  * it to the user record
 207  */
 208 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key, time_t TS)
 209 {
 210         if (!user || !cn)
 211                 return NULL;
 212
 213         bool new_channel = false;
 214         char cname[MAXBUF];
 215         int MOD_RESULT = 0;
 216         strlcpy(cname,cn,CHANMAX);
 217
 218         std::string privs;
 219
 220         chanrec* Ptr = Instance->FindChan(cname);
 221
 222         if (!Ptr)
 223         {
 224                 if ((!IS_LOCAL(user)) && (!TS))
 225                         Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 226
 227                 privs = "@";
 228
 229                 if (IS_LOCAL(user) && override == false)
 230                 {
 231                         MOD_RESULT = 0;
 232                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 233                         if (MOD_RESULT == 1)
 234                                 return NULL;
 235                 }
 236
 237                 /* create a new one */
 238                 Ptr = new chanrec(Instance);
 239                 (*(Instance->chanlist))[cname] = Ptr;
 240
 241                 strlcpy(Ptr->name, cname,CHANMAX);
 242
 243                 /* As spotted by jilles, dont bother to set this on remote users */
 244                 if (IS_LOCAL(user))
 245                         Ptr->SetDefaultModes();
 246
 247                 Ptr->created = TS ? TS : Instance->Time();
 248                 Ptr->age = Ptr->created;
 249                 *Ptr->topic = 0;
 250                 *Ptr->setby = 0;
 251                 Ptr->topicset = 0;
 252                 new_channel = true;
 253         }
 254         else
 255         {
 256                 /* Already on the channel */
 257                 if (Ptr->HasUser(user))
 258                         return NULL;
 259
 260                 /*
 261                  * remote users are allowed us to bypass channel modes
 262                  * and bans (used by servers)
 263                  */
 264                 if (IS_LOCAL(user) && override == false)
 265                 {
 266                         MOD_RESULT = 0;
 267                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 268                         if (MOD_RESULT == 1)
 269                         {
 270                                 return NULL;
 271                         }
 272                         else if (MOD_RESULT == 0)
 273                         {
 274                                 if (*Ptr->key)
 275                                 {
 276                                         MOD_RESULT = 0;
 277                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 278                                         if (!MOD_RESULT)
 279                                         {
 280                                                 if ((!key) || strcmp(key,Ptr->key))
 281                                                 {
 282                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 283                                                         return NULL;
 284                                                 }
 285                                         }
 286                                 }
 287                                 if (Ptr->modes[CM_INVITEONLY])
 288                                 {
 289                                         MOD_RESULT = 0;
 290                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 291                                         if (!MOD_RESULT)
 292                                         {
 293                                                 if (user->IsInvited(Ptr->name))
 294                                                 {
 295                                                         /* user was invited to channel */
 296                                                         /* there may be an optional channel NOTICE here */
 297                                                 }
 298                                                 else
 299                                                 {
 300                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 301                                                         return NULL;
 302                                                 }
 303                                         }
 304                                         user->RemoveInvite(Ptr->name);
 305                                 }
 306                                 if (Ptr->limit)
 307                                 {
 308                                         MOD_RESULT = 0;
 309                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 310                                         if (!MOD_RESULT)
 311                                         {
 312                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 313                                                 {
 314                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 315                                                         return NULL;
 316                                                 }
 317                                         }
 318                                 }
 319                                 if (Ptr->bans.size())
 320                                 {
 321                                         if (Ptr->IsBanned(user))
 322                                         {
 323                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 324                                                 return NULL;
 325                                         }
 326                                 }
 327                         }
 328                 }
 329         }
 330
 331         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 332          * OperMaxchans. For remote users which are not bound by the channel limits,
 333          * we can extend infinitely. Otherwise, nope, youre restricted to MaxChans.
 334          */
 335         if (!IS_LOCAL(user) || override == true)
 336         {
 337                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 338         }
 339         else if (IS_OPER(user))
 340         {
 341                 /* Oper allows extension up to the OperMaxchans value */
 342                 if (user->chans.size() < Instance->Config->OperMaxChans)
 343                 {
 344                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 345                 }
 346         }
 347         else if (user->chans.size() < Instance->Config->MaxChans)
 348         {
 349                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 350         }
 351
 352
 353         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 354
 355         if (new_channel)
 356         {
 357                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 358                 chan_hash::iterator n = Instance->chanlist->find(cname);
 359                 if (n != Instance->chanlist->end())
 360                 {
 361                         Ptr->DelUser(user);
 362                         DELETE(Ptr);
 363                         Instance->chanlist->erase(n);
 364                 }
 365         }
 366
 367         return NULL;
 368 }
 369
 370 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 371 {
 372         userrec* dummyuser = new userrec(Instance);
 373         std::string nick = user->nick;
 374         bool silent = false;
 375
 376         dummyuser->SetFd(FD_MAGIC_NUMBER);
 377         Ptr->AddUser(user);
 378
 379         /* Just in case they have no permissions */
 380         user->chans[Ptr] = 0;
 381
 382         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 383         {
 384                 const char status = *x;
 385                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 386                 if (mh)
 387                 {
 388                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 389                         /* Make sure that the mode handler knows this mode was now set */
 390                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 391
 392                         switch (mh->GetPrefix())
 393                         {
 394                                 /* These logic ops are SAFE IN THIS CASE
 395                                  * because if the entry doesnt exist,
 396                                  * addressing operator[] creates it.
 397                                  * If they do exist, it points to it.
 398                                  * At all other times where we dont want
 399                                  * to create an item if it doesnt exist, we
 400                                  * must stick to ::find().
 401                                  */
 402                                 case '@':
 403                                         user->chans[Ptr] |= UCMODE_OP;
 404                                 break;
 405                                 case '%':
 406                                         user->chans[Ptr] |= UCMODE_HOP;
 407                                 break;
 408                                 case '+':
 409                                         user->chans[Ptr] |= UCMODE_VOICE;
 410                                 break;
 411                         }
 412                 }
 413         }
 414
 415         delete dummyuser;
 416
 417         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 418
 419         if (!silent)
 420                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 421
 422         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 423         std::string ms = Instance->Modes->ModeString(user, Ptr);
 424         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 425                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 426
 427         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 428         if (IS_LOCAL(user))
 429         {
 430                 if (Ptr->topicset)
 431                 {
 432                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 433                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 434                 }
 435                 Ptr->UserList(user);
 436         }
 437         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 438         return Ptr;
 439 }
 440
 441 bool chanrec::IsBanned(userrec* user)
 442 {
 443         char mask[MAXBUF];
 444         int MOD_RESULT = 0;
 445         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 446         if (!MOD_RESULT)
 447         {
 448                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 449                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 450                 {
 451                         /* This allows CIDR ban matching
 452                          *
 453                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 454                          */
 455                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 456                         {
 457                                 return true;
 458                         }
 459                 }
 460         }
 461         return false;
 462 }
 463
 464 /* chanrec::PartUser
 465  * remove a channel from a users record, and return the number of users left.
 466  * Therefore, if this function returns 0 the caller should delete the chanrec.
 467  */
 468 long chanrec::PartUser(userrec *user, const char* reason)
 469 {
 470         bool silent = false;
 471
 472         if (!user)
 473                 return this->GetUserCounter();
 474
 475         UCListIter i = user->chans.find(this);
 476         if (i != user->chans.end())
 477         {
 478                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 479
 480                 if (!silent)
 481                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 482
 483                 user->chans.erase(i);
 484                 this->RemoveAllPrefixes(user);
 485         }
 486
 487         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 488         {
 489                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 490                 /* kill the record */
 491                 if (iter != ServerInstance->chanlist->end())
 492                 {
 493                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 494                         ServerInstance->chanlist->erase(iter);
 495                 }
 496                 return 0;
 497         }
 498
 499         return this->GetUserCounter();
 500 }
 501
 502 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 503 {
 504         bool silent = false;
 505
 506         if (!user || !reason)
 507                 return this->GetUserCounter();
 508
 509         if (IS_LOCAL(user))
 510         {
 511                 if (!this->HasUser(user))
 512                 {
 513                         /* Not on channel */
 514                         return this->GetUserCounter();
 515                 }
 516         }
 517
 518         if (triggerevents)
 519         {
 520                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 521         }
 522
 523         UCListIter i = user->chans.find(this);
 524         if (i != user->chans.end())
 525         {
 526                 if (!silent)
 527                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 528
 529                 user->chans.erase(i);
 530                 this->RemoveAllPrefixes(user);
 531         }
 532
 533         if (!this->DelUser(user))
 534         {
 535                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 536                 /* kill the record */
 537                 if (iter != ServerInstance->chanlist->end())
 538                 {
 539                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 540                         ServerInstance->chanlist->erase(iter);
 541                 }
 542                 return 0;
 543         }
 544
 545         return this->GetUserCounter();
 546 }
 547
 548 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 549 {
 550         bool silent = false;
 551
 552         if (!src || !user || !reason)
 553                 return this->GetUserCounter();
 554
 555         if (IS_LOCAL(src))
 556         {
 557                 if (!this->HasUser(user))
 558                 {
 559                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 560                         return this->GetUserCounter();
 561                 }
 562                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 563                 {
 564                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 565                         return this->GetUserCounter();
 566                 }
 567                 int MOD_RESULT = 0;
 568
 569                 if (!ServerInstance->ULine(src->server))
 570                 {
 571                         MOD_RESULT = 0;
 572                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 573                         if (MOD_RESULT == 1)
 574                                 return this->GetUserCounter();
 575                 }
 576                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 577                 if (MOD_RESULT != -1)
 578                 {
 579                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 580                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 581                                 return this->GetUserCounter();
 582
 583                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 584                         {
 585                                 int them = this->GetStatus(src);
 586                                 int us = this->GetStatus(user);
 587                                 if ((them < STATUS_HOP) || (them < us))
 588                                 {
 589                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 590                                         return this->GetUserCounter();
 591                                 }
 592                         }
 593                 }
 594         }
 595
 596         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 597
 598         UCListIter i = user->chans.find(this);
 599         if (i != user->chans.end())
 600         {
 601                 /* zap it from the channel list of the user */
 602                 if (!silent)
 603                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 604
 605                 user->chans.erase(i);
 606                 this->RemoveAllPrefixes(user);
 607         }
 608
 609         if (!this->DelUser(user))
 610         /* if there are no users left on the channel */
 611         {
 612                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 613
 614                 /* kill the record */
 615                 if (iter != ServerInstance->chanlist->end())
 616                 {
 617                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 618                         ServerInstance->chanlist->erase(iter);
 619                 }
 620                 return 0;
 621         }
 622
 623         return this->GetUserCounter();
 624 }
 625
 626 void chanrec::WriteChannel(userrec* user, char* text, ...)
 627 {
 628         char textbuffer[MAXBUF];
 629         va_list argsPtr;
 630
 631         if (!user || !text)
 632                 return;
 633
 634         va_start(argsPtr, text);
 635         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 636         va_end(argsPtr);
 637
 638         this->WriteChannel(user, std::string(textbuffer));
 639 }
 640
 641 void chanrec::WriteChannel(userrec* user, const std::string &text)
 642 {
 643         CUList *ulist = this->GetUsers();
 644         char tb[MAXBUF];
 645
 646         if (!user)
 647                 return;
 648
 649         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 650         std::string out = tb;
 651
 652         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 653         {
 654                 if (IS_LOCAL(i->first))
 655                         i->first->Write(out);
 656         }
 657 }
 658
 659 void chanrec::WriteChannelWithServ(const char* ServName, const 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->WriteChannelWithServ(ServName, std::string(textbuffer));
 672 }
 673
 674 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 675 {
 676         CUList *ulist = this->GetUsers();
 677         char tb[MAXBUF];
 678
 679         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 680         std::string out = tb;
 681
 682         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 683         {
 684                 if (IS_LOCAL(i->first))
 685                         i->first->Write(out);
 686         }
 687 }
 688
 689 /* write formatted text from a source user to all users on a channel except
 690  * for the sender (for privmsg etc) */
 691 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 692 {
 693         char textbuffer[MAXBUF];
 694         va_list argsPtr;
 695
 696         if (!text)
 697                 return;
 698
 699         va_start(argsPtr, text);
 700         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 701         va_end(argsPtr);
 702
 703         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 704 }
 705
 706 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 707 {
 708         char textbuffer[MAXBUF];
 709         va_list argsPtr;
 710
 711         if (!text)
 712                 return;
 713
 714         va_start(argsPtr, text);
 715         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 716         va_end(argsPtr);
 717
 718         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 719 }
 720
 721 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 722 {
 723         CUList *ulist;
 724         char tb[MAXBUF];
 725
 726         switch (status)
 727         {
 728                 case '@':
 729                         ulist = this->GetOppedUsers();
 730                         break;
 731                 case '%':
 732                         ulist = this->GetHalfoppedUsers();
 733                         break;
 734                 case '+':
 735                         ulist = this->GetVoicedUsers();
 736                         break;
 737                 default:
 738                         ulist = this->GetUsers();
 739                         break;
 740         }
 741
 742         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 743         std::string out = tb;
 744
 745         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 746         {
 747                 if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
 748                 {
 749                         if (serversource)
 750                                 i->first->WriteServ(text);
 751                         else
 752                                 i->first->Write(out);
 753                 }
 754         }
 755 }
 756
 757 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 758 {
 759         CUList except_list;
 760         except_list[user] = user->nick;
 761         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 762 }
 763
 764 /*
 765  * return a count of the users on a specific channel accounting for
 766  * invisible users who won't increase the count. e.g. for /LIST
 767  */
 768 int chanrec::CountInvisible()
 769 {
 770         int count = 0;
 771         CUList *ulist= this->GetUsers();
 772         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 773         {
 774                 if (!(i->first->IsModeSet('i')))
 775                         count++;
 776         }
 777
 778         return count;
 779 }
 780
 781 char* chanrec::ChanModes(bool showkey)
 782 {
 783         static char scratch[MAXBUF];
 784         static char sparam[MAXBUF];
 785         char* offset = scratch;
 786         std::string extparam;
 787
 788         *scratch = '\0';
 789         *sparam = '\0';
 790
 791         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 792         for(int n = 0; n < 64; n++)
 793         {
 794                 if(this->modes[n])
 795                 {
 796                         *offset++ = n + 65;
 797                         extparam = "";
 798                         switch (n)
 799                         {
 800                                 case CM_KEY:
 801                                         extparam = (showkey ? this->key : "<key>");
 802                                 break;
 803                                 case CM_LIMIT:
 804                                         extparam = ConvToStr(this->limit);
 805                                 break;
 806                                 case CM_NOEXTERNAL:
 807                                 case CM_TOPICLOCK:
 808                                 case CM_INVITEONLY:
 809                                 case CM_MODERATED:
 810                                 case CM_SECRET:
 811                                 case CM_PRIVATE:
 812                                         /* We know these have no parameters */
 813                                 break;
 814                                 default:
 815                                         extparam = this->GetModeParameter(n + 65);
 816                                 break;
 817                         }
 818                         if (extparam != "")
 819                         {
 820                                 charlcat(sparam,' ',MAXBUF);
 821                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 822                         }
 823                 }
 824         }
 825
 826         /* Null terminate scratch */
 827         *offset = '\0';
 828         strlcat(scratch,sparam,MAXBUF);
 829         return scratch;
 830 }
 831
 832 /* compile a userlist of a channel into a string, each nick seperated by
 833  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 834  */
 835 void chanrec::UserList(userrec *user, CUList *ulist)
 836 {
 837         char list[MAXBUF];
 838         size_t dlen, curlen;
 839         int MOD_RESULT = 0;
 840
 841         if (!IS_LOCAL(user))
 842                 return;
 843
 844         FOREACH_RESULT(I_OnUserList,OnUserList(user, this, ulist));
 845         if (MOD_RESULT == 1)
 846                 return;
 847
 848         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 849
 850         int numusers = 0;
 851         char* ptr = list + dlen;
 852
 853         if (!ulist)
 854                 ulist = this->GetUsers();
 855
 856         /* Improvement by Brain - this doesnt change in value, so why was it inside
 857          * the loop?
 858          */
 859         bool has_user = this->HasUser(user);
 860
 861         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 862         {
 863                 if ((!has_user) && (i->first->modes[UM_INVISIBLE]))
 864                 {
 865                         /*
 866                          * user is +i, and source not on the channel, does not show
 867                          * nick in NAMES list
 868                          */
 869                         continue;
 870                 }
 871
 872                 if (i->first->Visibility && !i->first->Visibility->VisibleTo(user))
 873                         continue;
 874
 875                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->first), i->second.c_str());
 876                 /* OnUserList can change this - reset it back to normal */
 877                 i->second = i->first->nick;
 878
 879                 curlen += ptrlen;
 880                 ptr += ptrlen;
 881
 882                 numusers++;
 883
 884                 if (curlen > (480-NICKMAX))
 885                 {
 886                         /* list overflowed into multiple numerics */
 887                         user->WriteServ(std::string(list));
 888
 889                         /* reset our lengths */
 890                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 891                         ptr = list + dlen;
 892
 893                         ptrlen = 0;
 894                         numusers = 0;
 895                 }
 896         }
 897
 898         /* if whats left in the list isnt empty, send it */
 899         if (numusers)
 900         {
 901                 user->WriteServ(std::string(list));
 902         }
 903
 904         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 905 }
 906
 907 long chanrec::GetMaxBans()
 908 {
 909         /* Return the cached value if there is one */
 910         if (this->maxbans)
 911                 return this->maxbans;
 912
 913         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 914         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 915         {
 916                 if (match(this->name,n->first.c_str()))
 917                 {
 918                         this->maxbans = n->second;
 919                         return n->second;
 920                 }
 921         }
 922
 923         /* Screw it, just return the default of 64 */
 924         this->maxbans = 64;
 925         return this->maxbans;
 926 }
 927
 928 void chanrec::ResetMaxBans()
 929 {
 930         this->maxbans = 0;
 931 }
 932
 933 /* returns the status character for a given user on a channel, e.g. @ for op,
 934  * % for halfop etc. If the user has several modes set, the highest mode
 935  * the user has must be returned.
 936  */
 937 const char* chanrec::GetPrefixChar(userrec *user)
 938 {
 939         static char pf[2] = {0, 0};
 940
 941         prefixlist::iterator n = prefixes.find(user);
 942         if (n != prefixes.end())
 943         {
 944                 if (n->second.size())
 945                 {
 946                         /* If the user has any prefixes, their highest prefix
 947                          * will always be at the head of the list, as the list is
 948                          * sorted in rank order highest first (see SetPrefix()
 949                          * for reasons why)
 950                          */
 951                         *pf = n->second.begin()->first;
 952                         return pf;
 953                 }
 954         }
 955
 956         *pf = 0;
 957         return pf;
 958 }
 959
 960 const char* chanrec::GetAllPrefixChars(userrec* user)
 961 {
 962         static char prefix[MAXBUF];
 963         int ctr = 0;
 964         *prefix = 0;
 965
 966         prefixlist::iterator n = prefixes.find(user);
 967         if (n != prefixes.end())
 968         {
 969                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 970                 {
 971                         prefix[ctr++] = x->first;
 972                 }
 973         }
 974
 975         prefix[ctr] = 0;
 976
 977         return prefix;
 978 }
 979
 980 unsigned int chanrec::GetPrefixValue(userrec* user)
 981 {
 982         prefixlist::iterator n = prefixes.find(user);
 983         if (n != prefixes.end())
 984         {
 985                 if (n->second.size())
 986                         return n->second.begin()->second;
 987         }
 988         return 0;
 989 }
 990
 991 int chanrec::GetStatusFlags(userrec *user)
 992 {
 993         UCListIter i = user->chans.find(this);
 994         if (i != user->chans.end())
 995         {
 996                 return i->second;
 997         }
 998         return 0;
 999 }
1000
1001 int chanrec::GetStatus(userrec *user)
1002 {
1003         if (ServerInstance->ULine(user->server))
1004                 return STATUS_OP;
1005
1006         UCListIter i = user->chans.find(this);
1007         if (i != user->chans.end())
1008         {
1009                 if ((i->second & UCMODE_OP) > 0)
1010                 {
1011                         return STATUS_OP;
1012                 }
1013                 if ((i->second & UCMODE_HOP) > 0)
1014                 {
1015                         return STATUS_HOP;
1016                 }
1017                 if ((i->second & UCMODE_VOICE) > 0)
1018                 {
1019                         return STATUS_VOICE;
1020                 }
1021                 return STATUS_NORMAL;
1022         }
1023         return STATUS_NORMAL;
1024 }
1025
1026 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1027 {
1028         prefixlist::iterator n = prefixes.find(user);
1029         prefixtype pfx = std::make_pair(prefix,prefix_value);
1030         if (adding)
1031         {
1032                 if (n != prefixes.end())
1033                 {
1034                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1035                         {
1036                                 n->second.push_back(pfx);
1037                                 /* We must keep prefixes in rank order, largest first.
1038                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1039                                  * state, and secondly it turns out to be a benefit to us later.
1040                                  * See above in GetPrefix().
1041                                  */
1042                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1043                         }
1044                 }
1045                 else
1046                 {
1047                         pfxcontainer one;
1048                         one.push_back(pfx);
1049                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1050                 }
1051         }
1052         else
1053         {
1054                 if (n != prefixes.end())
1055                 {
1056                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1057                         if (x != n->second.end())
1058                                 n->second.erase(x);
1059                 }
1060         }
1061 }
1062
1063 void chanrec::RemoveAllPrefixes(userrec* user)
1064 {
1065         prefixlist::iterator n = prefixes.find(user);
1066         if (n != prefixes.end())
1067         {
1068                 prefixes.erase(n);
1069         }
1070 }
1071