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         else
  48         {
  49                 if (n != custom_mode_params.end())
  50                 {
  51                         free(n->second);
  52                         custom_mode_params.erase(n);
  53                 }
  54         }
  55 }
  56
  57 bool chanrec::IsModeSet(char mode)
  58 {
  59         return modes[mode-65];
  60 }
  61
  62 std::string chanrec::GetModeParameter(char mode)
  63 {
  64         switch (mode)
  65         {
  66                 case 'k':
  67                         return this->key;
  68                 case 'l':
  69                         return ConvToStr(this->limit);
  70                 default:
  71                         CustomModeList::iterator n = custom_mode_params.find(mode);
  72                         if (n != custom_mode_params.end())
  73                                 return n->second;
  74                         return "";
  75                 break;
  76         }
  77 }
  78
  79 long chanrec::GetUserCounter()
  80 {
  81         return (this->internal_userlist.size());
  82 }
  83
  84 void chanrec::AddUser(userrec* user)
  85 {
  86         internal_userlist[user] = user->nick;
  87 }
  88
  89 unsigned long chanrec::DelUser(userrec* user)
  90 {
  91         CUListIter a = internal_userlist.find(user);
  92
  93         if (a != internal_userlist.end())
  94         {
  95                 internal_userlist.erase(a);
  96                 /* And tidy any others... */
  97                 DelOppedUser(user);
  98                 DelHalfoppedUser(user);
  99                 DelVoicedUser(user);
 100         }
 101
 102         return internal_userlist.size();
 103 }
 104
 105 bool chanrec::HasUser(userrec* user)
 106 {
 107         return (internal_userlist.find(user) != internal_userlist.end());
 108 }
 109
 110 void chanrec::AddOppedUser(userrec* user)
 111 {
 112         internal_op_userlist[user] = user->nick;
 113 }
 114
 115 void chanrec::DelOppedUser(userrec* user)
 116 {
 117         CUListIter a = internal_op_userlist.find(user);
 118         if (a != internal_op_userlist.end())
 119         {
 120                 internal_op_userlist.erase(a);
 121                 return;
 122         }
 123 }
 124
 125 void chanrec::AddHalfoppedUser(userrec* user)
 126 {
 127         internal_halfop_userlist[user] = user->nick;
 128 }
 129
 130 void chanrec::DelHalfoppedUser(userrec* user)
 131 {
 132         CUListIter a = internal_halfop_userlist.find(user);
 133
 134         if (a != internal_halfop_userlist.end())
 135         {
 136                 internal_halfop_userlist.erase(a);
 137         }
 138 }
 139
 140 void chanrec::AddVoicedUser(userrec* user)
 141 {
 142         internal_voice_userlist[user] = user->nick;
 143 }
 144
 145 void chanrec::DelVoicedUser(userrec* user)
 146 {
 147         CUListIter a = internal_voice_userlist.find(user);
 148
 149         if (a != internal_voice_userlist.end())
 150         {
 151                 internal_voice_userlist.erase(a);
 152         }
 153 }
 154
 155 CUList* chanrec::GetUsers()
 156 {
 157         return &internal_userlist;
 158 }
 159
 160 CUList* chanrec::GetOppedUsers()
 161 {
 162         return &internal_op_userlist;
 163 }
 164
 165 CUList* chanrec::GetHalfoppedUsers()
 166 {
 167         return &internal_halfop_userlist;
 168 }
 169
 170 CUList* chanrec::GetVoicedUsers()
 171 {
 172         return &internal_voice_userlist;
 173 }
 174
 175 void chanrec::SetDefaultModes()
 176 {
 177         irc::spacesepstream list(ServerInstance->Config->DefaultModes);
 178         std::string modeseq = list.GetToken();
 179         std::string parameter;
 180         userrec* dummyuser = new userrec(ServerInstance);
 181         dummyuser->SetFd(FD_MAGIC_NUMBER);
 182
 183         for (std::string::iterator n = modeseq.begin(); n != modeseq.end(); ++n)
 184         {
 185                 ModeHandler* mode = ServerInstance->Modes->FindMode(*n, MODETYPE_CHANNEL);
 186                 if (mode)
 187                 {
 188                         if (mode->GetNumParams(true))
 189                                 parameter = list.GetToken().c_str();
 190                         else
 191                                 parameter.clear();
 192
 193                         mode->OnModeChange(dummyuser, dummyuser, this, parameter, true);
 194                 }
 195         }
 196
 197         delete dummyuser;
 198 }
 199
 200 /*
 201  * add a channel to a user, creating the record for it if needed and linking
 202  * it to the user record
 203  */
 204 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key, time_t TS)
 205 {
 206         if (!user || !cn)
 207                 return NULL;
 208
 209         char cname[MAXBUF];
 210         int MOD_RESULT = 0;
 211         std::string privs;
 212         chanrec *Ptr;
 213
 214         /*
 215          * We don't restrict the number of channels that remote users or users that are override-joining may be in.
 216          * We restrict local users to MaxChans channels.
 217          * We restrict local operators to OperMaxChans channels.
 218          * This is a lot more logical than how it was formerly. -- w00t
 219          */
 220         if (IS_LOCAL(user) && !override)
 221         {
 222                 if (user->GetMaxChans())
 223                 {
 224                         if (user->chans.size() >= user->GetMaxChans())
 225                         {
 226                                 user->WriteServ("405 %s %s :You are on too many channels",user->nick, cn);
 227                                 return NULL;
 228                         }
 229                 }
 230                 else
 231                 {
 232                         if (IS_OPER(user))
 233                         {
 234                                 if (user->chans.size() >= Instance->Config->OperMaxChans)
 235                                 {
 236                                         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cn);
 237                                         return NULL;
 238                                 }
 239                         }
 240                         else
 241                         {
 242                                 if (user->chans.size() >= Instance->Config->MaxChans)
 243                                 {
 244                                         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cn);
 245                                         return NULL;
 246                                 }
 247                         }
 248                 }
 249         }
 250
 251         strlcpy(cname, cn, CHANMAX);
 252         Ptr = Instance->FindChan(cname);
 253
 254         if (!Ptr)
 255         {
 256                 /*
 257                  * Fix: desync bug was here, don't set @ on remote users - spanningtree handles their permissions. bug #358. -- w00t
 258                  */
 259                 if (!IS_LOCAL(user))
 260                 {
 261                         if (!TS)
 262                                 Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 263                 }
 264                 else
 265                 {
 266                         privs = "@";
 267                 }
 268
 269                 if (IS_LOCAL(user) && override == false)
 270                 {
 271                         MOD_RESULT = 0;
 272                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 273                         if (MOD_RESULT == 1)
 274                                 return NULL;
 275                 }
 276
 277                 /* create a new one */
 278                 Ptr = new chanrec(Instance);
 279                 (*(Instance->chanlist))[cname] = Ptr;
 280
 281                 strlcpy(Ptr->name, cname,CHANMAX);
 282
 283                 /* As spotted by jilles, dont bother to set this on remote users */
 284                 if (IS_LOCAL(user))
 285                         Ptr->SetDefaultModes();
 286
 287                 Ptr->created = TS ? TS : Instance->Time();
 288                 Ptr->age = Ptr->created;
 289                 *Ptr->topic = 0;
 290                 *Ptr->setby = 0;
 291                 Ptr->topicset = 0;
 292         }
 293         else
 294         {
 295                 /* Already on the channel */
 296                 if (Ptr->HasUser(user))
 297                         return NULL;
 298
 299                 /*
 300                  * remote users are allowed us to bypass channel modes
 301                  * and bans (used by servers)
 302                  */
 303                 if (IS_LOCAL(user) && override == false)
 304                 {
 305                         MOD_RESULT = 0;
 306                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 307                         if (MOD_RESULT == 1)
 308                         {
 309                                 return NULL;
 310                         }
 311                         else if (MOD_RESULT == 0)
 312                         {
 313                                 if (*Ptr->key)
 314                                 {
 315                                         MOD_RESULT = 0;
 316                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 317                                         if (!MOD_RESULT)
 318                                         {
 319                                                 if ((!key) || strcmp(key,Ptr->key))
 320                                                 {
 321                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 322                                                         return NULL;
 323                                                 }
 324                                         }
 325                                 }
 326                                 if (Ptr->IsModeSet('i'))
 327                                 {
 328                                         MOD_RESULT = 0;
 329                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 330                                         if (!MOD_RESULT)
 331                                         {
 332                                                 if (!user->IsInvited(Ptr->name))
 333                                                 {
 334                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 335                                                         return NULL;
 336                                                 }
 337                                         }
 338                                         user->RemoveInvite(Ptr->name);
 339                                 }
 340                                 if (Ptr->limit)
 341                                 {
 342                                         MOD_RESULT = 0;
 343                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 344                                         if (!MOD_RESULT)
 345                                         {
 346                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 347                                                 {
 348                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 349                                                         return NULL;
 350                                                 }
 351                                         }
 352                                 }
 353                                 if (Ptr->bans.size())
 354                                 {
 355                                         if (Ptr->IsBanned(user))
 356                                         {
 357                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 358                                                 return NULL;
 359                                         }
 360                                 }
 361                         }
 362                 }
 363         }
 364
 365         return chanrec::ForceChan(Instance, Ptr, user, privs);
 366 }
 367
 368 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 369 {
 370         userrec* dummyuser = new userrec(Instance);
 371         std::string nick = user->nick;
 372         bool silent = false;
 373
 374         dummyuser->SetFd(FD_MAGIC_NUMBER);
 375         Ptr->AddUser(user);
 376
 377         /* Just in case they have no permissions */
 378         user->chans[Ptr] = 0;
 379
 380         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 381         {
 382                 const char status = *x;
 383                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 384                 if (mh)
 385                 {
 386                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 387                         /* Make sure that the mode handler knows this mode was now set */
 388                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 389
 390                         switch (mh->GetPrefix())
 391                         {
 392                                 /* These logic ops are SAFE IN THIS CASE
 393                                  * because if the entry doesnt exist,
 394                                  * addressing operator[] creates it.
 395                                  * If they do exist, it points to it.
 396                                  * At all other times where we dont want
 397                                  * to create an item if it doesnt exist, we
 398                                  * must stick to ::find().
 399                                  */
 400                                 case '@':
 401                                         user->chans[Ptr] |= UCMODE_OP;
 402                                 break;
 403                                 case '%':
 404                                         user->chans[Ptr] |= UCMODE_HOP;
 405                                 break;
 406                                 case '+':
 407                                         user->chans[Ptr] |= UCMODE_VOICE;
 408                                 break;
 409                         }
 410                 }
 411         }
 412
 413         delete dummyuser;
 414
 415         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 416
 417         if (!silent)
 418                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 419
 420         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 421         std::string ms = Instance->Modes->ModeString(user, Ptr);
 422         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 423                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 424
 425         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 426         if (IS_LOCAL(user))
 427         {
 428                 if (Ptr->topicset)
 429                 {
 430                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 431                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 432                 }
 433                 Ptr->UserList(user);
 434         }
 435         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 436         return Ptr;
 437 }
 438
 439 bool chanrec::IsBanned(userrec* user)
 440 {
 441         char mask[MAXBUF];
 442         int MOD_RESULT = 0;
 443         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 444         if (!MOD_RESULT)
 445         {
 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 return the number of users left.
 464  * Therefore, if this function returns 0 the caller should delete the chanrec.
 465  */
 466 long chanrec::PartUser(userrec *user, const char* reason)
 467 {
 468         bool silent = false;
 469
 470         if (!user)
 471                 return this->GetUserCounter();
 472
 473         UCListIter i = user->chans.find(this);
 474         if (i != user->chans.end())
 475         {
 476                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 477
 478                 if (!silent)
 479                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 480
 481                 user->chans.erase(i);
 482                 this->RemoveAllPrefixes(user);
 483         }
 484
 485         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 486         {
 487                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 488                 /* kill the record */
 489                 if (iter != ServerInstance->chanlist->end())
 490                 {
 491                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 492                         ServerInstance->chanlist->erase(iter);
 493                 }
 494                 return 0;
 495         }
 496
 497         return this->GetUserCounter();
 498 }
 499
 500 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 501 {
 502         bool silent = false;
 503
 504         if (!user || !reason)
 505                 return this->GetUserCounter();
 506
 507         if (IS_LOCAL(user))
 508         {
 509                 if (!this->HasUser(user))
 510                 {
 511                         /* Not on channel */
 512                         return this->GetUserCounter();
 513                 }
 514         }
 515
 516         if (triggerevents)
 517         {
 518                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 519         }
 520
 521         UCListIter i = user->chans.find(this);
 522         if (i != user->chans.end())
 523         {
 524                 if (!silent)
 525                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 526
 527                 user->chans.erase(i);
 528                 this->RemoveAllPrefixes(user);
 529         }
 530
 531         if (!this->DelUser(user))
 532         {
 533                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 534                 /* kill the record */
 535                 if (iter != ServerInstance->chanlist->end())
 536                 {
 537                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 538                         ServerInstance->chanlist->erase(iter);
 539                 }
 540                 return 0;
 541         }
 542
 543         return this->GetUserCounter();
 544 }
 545
 546 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 547 {
 548         bool silent = false;
 549
 550         if (!src || !user || !reason)
 551                 return this->GetUserCounter();
 552
 553         if (IS_LOCAL(src))
 554         {
 555                 if (!this->HasUser(user))
 556                 {
 557                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 558                         return this->GetUserCounter();
 559                 }
 560                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 561                 {
 562                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 563                         return this->GetUserCounter();
 564                 }
 565                 int MOD_RESULT = 0;
 566
 567                 if (!ServerInstance->ULine(src->server))
 568                 {
 569                         MOD_RESULT = 0;
 570                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 571                         if (MOD_RESULT == 1)
 572                                 return this->GetUserCounter();
 573                 }
 574                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 575                 if (MOD_RESULT != -1)
 576                 {
 577                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 578                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 579                                 return this->GetUserCounter();
 580
 581                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 582                         {
 583                                 int them = this->GetStatus(src);
 584                                 int us = this->GetStatus(user);
 585                                 if ((them < STATUS_HOP) || (them < us))
 586                                 {
 587                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 588                                         return this->GetUserCounter();
 589                                 }
 590                         }
 591                 }
 592         }
 593
 594         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 595
 596         UCListIter i = user->chans.find(this);
 597         if (i != user->chans.end())
 598         {
 599                 /* zap it from the channel list of the user */
 600                 if (!silent)
 601                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 602
 603                 user->chans.erase(i);
 604                 this->RemoveAllPrefixes(user);
 605         }
 606
 607         if (!this->DelUser(user))
 608         /* if there are no users left on the channel */
 609         {
 610                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 611
 612                 /* kill the record */
 613                 if (iter != ServerInstance->chanlist->end())
 614                 {
 615                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 616                         ServerInstance->chanlist->erase(iter);
 617                 }
 618                 return 0;
 619         }
 620
 621         return this->GetUserCounter();
 622 }
 623
 624 void chanrec::WriteChannel(userrec* user, char* text, ...)
 625 {
 626         char textbuffer[MAXBUF];
 627         va_list argsPtr;
 628
 629         if (!user || !text)
 630                 return;
 631
 632         va_start(argsPtr, text);
 633         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 634         va_end(argsPtr);
 635
 636         this->WriteChannel(user, std::string(textbuffer));
 637 }
 638
 639 void chanrec::WriteChannel(userrec* user, const std::string &text)
 640 {
 641         CUList *ulist = this->GetUsers();
 642         char tb[MAXBUF];
 643
 644         if (!user)
 645                 return;
 646
 647         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 648         std::string out = tb;
 649
 650         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 651         {
 652                 if (IS_LOCAL(i->first))
 653                         i->first->Write(out);
 654         }
 655 }
 656
 657 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 658 {
 659         char textbuffer[MAXBUF];
 660         va_list argsPtr;
 661
 662         if (!text)
 663                 return;
 664
 665         va_start(argsPtr, text);
 666         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 667         va_end(argsPtr);
 668
 669         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 670 }
 671
 672 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 673 {
 674         CUList *ulist = this->GetUsers();
 675         char tb[MAXBUF];
 676
 677         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 678         std::string out = tb;
 679
 680         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 681         {
 682                 if (IS_LOCAL(i->first))
 683                         i->first->Write(out);
 684         }
 685 }
 686
 687 /* write formatted text from a source user to all users on a channel except
 688  * for the sender (for privmsg etc) */
 689 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 690 {
 691         char textbuffer[MAXBUF];
 692         va_list argsPtr;
 693
 694         if (!text)
 695                 return;
 696
 697         va_start(argsPtr, text);
 698         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 699         va_end(argsPtr);
 700
 701         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 702 }
 703
 704 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 705 {
 706         char textbuffer[MAXBUF];
 707         va_list argsPtr;
 708
 709         if (!text)
 710                 return;
 711
 712         va_start(argsPtr, text);
 713         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 714         va_end(argsPtr);
 715
 716         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 717 }
 718
 719 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 720 {
 721         CUList *ulist;
 722         char tb[MAXBUF];
 723
 724         switch (status)
 725         {
 726                 case '@':
 727                         ulist = this->GetOppedUsers();
 728                         break;
 729                 case '%':
 730                         ulist = this->GetHalfoppedUsers();
 731                         break;
 732                 case '+':
 733                         ulist = this->GetVoicedUsers();
 734                         break;
 735                 default:
 736                         ulist = this->GetUsers();
 737                         break;
 738         }
 739
 740         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 741         std::string out = tb;
 742
 743         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 744         {
 745                 if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
 746                 {
 747                         if (serversource)
 748                                 i->first->WriteServ(text);
 749                         else
 750                                 i->first->Write(out);
 751                 }
 752         }
 753 }
 754
 755 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 756 {
 757         CUList except_list;
 758         except_list[user] = user->nick;
 759         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 760 }
 761
 762 /*
 763  * return a count of the users on a specific channel accounting for
 764  * invisible users who won't increase the count. e.g. for /LIST
 765  */
 766 int chanrec::CountInvisible()
 767 {
 768         int count = 0;
 769         CUList *ulist= this->GetUsers();
 770         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 771         {
 772                 if (!(i->first->IsModeSet('i')))
 773                         count++;
 774         }
 775
 776         return count;
 777 }
 778
 779 char* chanrec::ChanModes(bool showkey)
 780 {
 781         static char scratch[MAXBUF];
 782         static char sparam[MAXBUF];
 783         char* offset = scratch;
 784         std::string extparam;
 785
 786         *scratch = '\0';
 787         *sparam = '\0';
 788
 789         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 790         for(int n = 0; n < 64; n++)
 791         {
 792                 if(this->modes[n])
 793                 {
 794                         *offset++ = n + 65;
 795                         extparam.clear();
 796                         switch (n)
 797                         {
 798                                 case CM_KEY:
 799                                         extparam = (showkey ? this->key : "<key>");
 800                                 break;
 801                                 case CM_LIMIT:
 802                                         extparam = ConvToStr(this->limit);
 803                                 break;
 804                                 case CM_NOEXTERNAL:
 805                                 case CM_TOPICLOCK:
 806                                 case CM_INVITEONLY:
 807                                 case CM_MODERATED:
 808                                 case CM_SECRET:
 809                                 case CM_PRIVATE:
 810                                         /* We know these have no parameters */
 811                                 break;
 812                                 default:
 813                                         extparam = this->GetModeParameter(n + 65);
 814                                 break;
 815                         }
 816                         if (!extparam.empty())
 817                         {
 818                                 charlcat(sparam,' ',MAXBUF);
 819                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 820                         }
 821                 }
 822         }
 823
 824         /* Null terminate scratch */
 825         *offset = '\0';
 826         strlcat(scratch,sparam,MAXBUF);
 827         return scratch;
 828 }
 829
 830 /* compile a userlist of a channel into a string, each nick seperated by
 831  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 832  */
 833 void chanrec::UserList(userrec *user, CUList *ulist)
 834 {
 835         char list[MAXBUF];
 836         size_t dlen, curlen;
 837         int MOD_RESULT = 0;
 838
 839         if (!IS_LOCAL(user))
 840                 return;
 841
 842         FOREACH_RESULT(I_OnUserList,OnUserList(user, this, ulist));
 843         if (MOD_RESULT == 1)
 844                 return;
 845
 846         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 847
 848         int numusers = 0;
 849         char* ptr = list + dlen;
 850
 851         if (!ulist)
 852                 ulist = this->GetUsers();
 853
 854         /* Improvement by Brain - this doesnt change in value, so why was it inside
 855          * the loop?
 856          */
 857         bool has_user = this->HasUser(user);
 858
 859         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 860         {
 861                 if ((!has_user) && (i->first->IsModeSet('i')))
 862                 {
 863                         /*
 864                          * user is +i, and source not on the channel, does not show
 865                          * nick in NAMES list
 866                          */
 867                         continue;
 868                 }
 869
 870                 if (i->first->Visibility && !i->first->Visibility->VisibleTo(user))
 871                         continue;
 872
 873                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->first), i->second.c_str());
 874                 /* OnUserList can change this - reset it back to normal */
 875                 i->second = i->first->nick;
 876
 877                 curlen += ptrlen;
 878                 ptr += ptrlen;
 879
 880                 numusers++;
 881
 882                 if (curlen > (480-NICKMAX))
 883                 {
 884                         /* list overflowed into multiple numerics */
 885                         user->WriteServ(std::string(list));
 886
 887                         /* reset our lengths */
 888                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 889                         ptr = list + dlen;
 890
 891                         ptrlen = 0;
 892                         numusers = 0;
 893                 }
 894         }
 895
 896         /* if whats left in the list isnt empty, send it */
 897         if (numusers)
 898         {
 899                 user->WriteServ(std::string(list));
 900         }
 901
 902         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 903 }
 904
 905 long chanrec::GetMaxBans()
 906 {
 907         /* Return the cached value if there is one */
 908         if (this->maxbans)
 909                 return this->maxbans;
 910
 911         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 912         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 913         {
 914                 if (match(this->name,n->first.c_str()))
 915                 {
 916                         this->maxbans = n->second;
 917                         return n->second;
 918                 }
 919         }
 920
 921         /* Screw it, just return the default of 64 */
 922         this->maxbans = 64;
 923         return this->maxbans;
 924 }
 925
 926 void chanrec::ResetMaxBans()
 927 {
 928         this->maxbans = 0;
 929 }
 930
 931 /* returns the status character for a given user on a channel, e.g. @ for op,
 932  * % for halfop etc. If the user has several modes set, the highest mode
 933  * the user has must be returned.
 934  */
 935 const char* chanrec::GetPrefixChar(userrec *user)
 936 {
 937         static char pf[2] = {0, 0};
 938
 939         prefixlist::iterator n = prefixes.find(user);
 940         if (n != prefixes.end())
 941         {
 942                 if (n->second.size())
 943                 {
 944                         /* If the user has any prefixes, their highest prefix
 945                          * will always be at the head of the list, as the list is
 946                          * sorted in rank order highest first (see SetPrefix()
 947                          * for reasons why)
 948                          */
 949                         *pf = n->second.begin()->first;
 950                         return pf;
 951                 }
 952         }
 953
 954         *pf = 0;
 955         return pf;
 956 }
 957
 958 const char* chanrec::GetAllPrefixChars(userrec* user)
 959 {
 960         static char prefix[MAXBUF];
 961         int ctr = 0;
 962         *prefix = 0;
 963
 964         prefixlist::iterator n = prefixes.find(user);
 965         if (n != prefixes.end())
 966         {
 967                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 968                 {
 969                         prefix[ctr++] = x->first;
 970                 }
 971         }
 972
 973         prefix[ctr] = 0;
 974
 975         return prefix;
 976 }
 977
 978 unsigned int chanrec::GetPrefixValue(userrec* user)
 979 {
 980         prefixlist::iterator n = prefixes.find(user);
 981         if (n != prefixes.end())
 982         {
 983                 if (n->second.size())
 984                         return n->second.begin()->second;
 985         }
 986         return 0;
 987 }
 988
 989 int chanrec::GetStatusFlags(userrec *user)
 990 {
 991         UCListIter i = user->chans.find(this);
 992         if (i != user->chans.end())
 993         {
 994                 return i->second;
 995         }
 996         return 0;
 997 }
 998
 999 int chanrec::GetStatus(userrec *user)
1000 {
1001         if (ServerInstance->ULine(user->server))
1002                 return STATUS_OP;
1003
1004         UCListIter i = user->chans.find(this);
1005         if (i != user->chans.end())
1006         {
1007                 if ((i->second & UCMODE_OP) > 0)
1008                 {
1009                         return STATUS_OP;
1010                 }
1011                 if ((i->second & UCMODE_HOP) > 0)
1012                 {
1013                         return STATUS_HOP;
1014                 }
1015                 if ((i->second & UCMODE_VOICE) > 0)
1016                 {
1017                         return STATUS_VOICE;
1018                 }
1019                 return STATUS_NORMAL;
1020         }
1021         return STATUS_NORMAL;
1022 }
1023
1024 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1025 {
1026         prefixlist::iterator n = prefixes.find(user);
1027         prefixtype pfx = std::make_pair(prefix,prefix_value);
1028         if (adding)
1029         {
1030                 if (n != prefixes.end())
1031                 {
1032                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1033                         {
1034                                 n->second.push_back(pfx);
1035                                 /* We must keep prefixes in rank order, largest first.
1036                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1037                                  * state, and secondly it turns out to be a benefit to us later.
1038                                  * See above in GetPrefix().
1039                                  */
1040                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1041                         }
1042                 }
1043                 else
1044                 {
1045                         pfxcontainer one;
1046                         one.push_back(pfx);
1047                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1048                 }
1049         }
1050         else
1051         {
1052                 if (n != prefixes.end())
1053                 {
1054                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1055                         if (x != n->second.end())
1056                                 n->second.erase(x);
1057                 }
1058         }
1059 }
1060
1061 void chanrec::RemoveAllPrefixes(userrec* user)
1062 {
1063         prefixlist::iterator n = prefixes.find(user);
1064         if (n != prefixes.end())
1065         {
1066                 prefixes.erase(n);
1067         }
1068 }
1069