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 (IS_OPER(user))
 223                 {
 224                         if (user->chans.size() >= Instance->Config->OperMaxChans)
 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 (user->chans.size() >= Instance->Config->MaxChans)
 233                         {
 234                                 user->WriteServ("405 %s %s :You are on too many channels",user->nick, cn);
 235                                 return NULL;
 236                         }
 237                 }
 238         }
 239
 240         strlcpy(cname, cn, CHANMAX);
 241         Ptr = Instance->FindChan(cname);
 242
 243         if (!Ptr)
 244         {
 245                 /*
 246                  * Fix: desync bug was here, don't set @ on remote users - spanningtree handles their permissions. bug #358. -- w00t
 247                  */
 248                 if (!IS_LOCAL(user))
 249                 {
 250                         if (!TS)
 251                                 Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 252                 }
 253                 else
 254                 {
 255                         privs = "@";
 256                 }
 257
 258                 if (IS_LOCAL(user) && override == false)
 259                 {
 260                         MOD_RESULT = 0;
 261                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 262                         if (MOD_RESULT == 1)
 263                                 return NULL;
 264                 }
 265
 266                 /* create a new one */
 267                 Ptr = new chanrec(Instance);
 268                 (*(Instance->chanlist))[cname] = Ptr;
 269
 270                 strlcpy(Ptr->name, cname,CHANMAX);
 271
 272                 /* As spotted by jilles, dont bother to set this on remote users */
 273                 if (IS_LOCAL(user))
 274                         Ptr->SetDefaultModes();
 275
 276                 Ptr->created = TS ? TS : Instance->Time();
 277                 Ptr->age = Ptr->created;
 278                 *Ptr->topic = 0;
 279                 *Ptr->setby = 0;
 280                 Ptr->topicset = 0;
 281         }
 282         else
 283         {
 284                 /* Already on the channel */
 285                 if (Ptr->HasUser(user))
 286                         return NULL;
 287
 288                 /*
 289                  * remote users are allowed us to bypass channel modes
 290                  * and bans (used by servers)
 291                  */
 292                 if (IS_LOCAL(user) && override == false)
 293                 {
 294                         MOD_RESULT = 0;
 295                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 296                         if (MOD_RESULT == 1)
 297                         {
 298                                 return NULL;
 299                         }
 300                         else if (MOD_RESULT == 0)
 301                         {
 302                                 if (*Ptr->key)
 303                                 {
 304                                         MOD_RESULT = 0;
 305                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 306                                         if (!MOD_RESULT)
 307                                         {
 308                                                 if ((!key) || strcmp(key,Ptr->key))
 309                                                 {
 310                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 311                                                         return NULL;
 312                                                 }
 313                                         }
 314                                 }
 315                                 if (Ptr->IsModeSet('i'))
 316                                 {
 317                                         MOD_RESULT = 0;
 318                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 319                                         if (!MOD_RESULT)
 320                                         {
 321                                                 if (!user->IsInvited(Ptr->name))
 322                                                 {
 323                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 324                                                         return NULL;
 325                                                 }
 326                                         }
 327                                         user->RemoveInvite(Ptr->name);
 328                                 }
 329                                 if (Ptr->limit)
 330                                 {
 331                                         MOD_RESULT = 0;
 332                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 333                                         if (!MOD_RESULT)
 334                                         {
 335                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 336                                                 {
 337                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 338                                                         return NULL;
 339                                                 }
 340                                         }
 341                                 }
 342                                 if (Ptr->bans.size())
 343                                 {
 344                                         if (Ptr->IsBanned(user))
 345                                         {
 346                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 347                                                 return NULL;
 348                                         }
 349                                 }
 350                         }
 351                 }
 352         }
 353
 354         return chanrec::ForceChan(Instance, Ptr, user, privs);
 355 }
 356
 357 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 358 {
 359         userrec* dummyuser = new userrec(Instance);
 360         std::string nick = user->nick;
 361         bool silent = false;
 362
 363         dummyuser->SetFd(FD_MAGIC_NUMBER);
 364         Ptr->AddUser(user);
 365
 366         /* Just in case they have no permissions */
 367         user->chans[Ptr] = 0;
 368
 369         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 370         {
 371                 const char status = *x;
 372                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 373                 if (mh)
 374                 {
 375                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 376                         /* Make sure that the mode handler knows this mode was now set */
 377                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 378
 379                         switch (mh->GetPrefix())
 380                         {
 381                                 /* These logic ops are SAFE IN THIS CASE
 382                                  * because if the entry doesnt exist,
 383                                  * addressing operator[] creates it.
 384                                  * If they do exist, it points to it.
 385                                  * At all other times where we dont want
 386                                  * to create an item if it doesnt exist, we
 387                                  * must stick to ::find().
 388                                  */
 389                                 case '@':
 390                                         user->chans[Ptr] |= UCMODE_OP;
 391                                 break;
 392                                 case '%':
 393                                         user->chans[Ptr] |= UCMODE_HOP;
 394                                 break;
 395                                 case '+':
 396                                         user->chans[Ptr] |= UCMODE_VOICE;
 397                                 break;
 398                         }
 399                 }
 400         }
 401
 402         delete dummyuser;
 403
 404         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 405
 406         if (!silent)
 407                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 408
 409         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 410         std::string ms = Instance->Modes->ModeString(user, Ptr);
 411         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 412                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 413
 414         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 415         if (IS_LOCAL(user))
 416         {
 417                 if (Ptr->topicset)
 418                 {
 419                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 420                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 421                 }
 422                 Ptr->UserList(user);
 423         }
 424         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 425         return Ptr;
 426 }
 427
 428 bool chanrec::IsBanned(userrec* user)
 429 {
 430         char mask[MAXBUF];
 431         int MOD_RESULT = 0;
 432         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 433         if (!MOD_RESULT)
 434         {
 435                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 436                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 437                 {
 438                         /* This allows CIDR ban matching
 439                          *
 440                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 441                          */
 442                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 443                         {
 444                                 return true;
 445                         }
 446                 }
 447         }
 448         return false;
 449 }
 450
 451 /* chanrec::PartUser
 452  * remove a channel from a users record, and return the number of users left.
 453  * Therefore, if this function returns 0 the caller should delete the chanrec.
 454  */
 455 long chanrec::PartUser(userrec *user, const char* reason)
 456 {
 457         bool silent = false;
 458
 459         if (!user)
 460                 return this->GetUserCounter();
 461
 462         UCListIter i = user->chans.find(this);
 463         if (i != user->chans.end())
 464         {
 465                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 466
 467                 if (!silent)
 468                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 469
 470                 user->chans.erase(i);
 471                 this->RemoveAllPrefixes(user);
 472         }
 473
 474         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 475         {
 476                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 477                 /* kill the record */
 478                 if (iter != ServerInstance->chanlist->end())
 479                 {
 480                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 481                         ServerInstance->chanlist->erase(iter);
 482                 }
 483                 return 0;
 484         }
 485
 486         return this->GetUserCounter();
 487 }
 488
 489 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 490 {
 491         bool silent = false;
 492
 493         if (!user || !reason)
 494                 return this->GetUserCounter();
 495
 496         if (IS_LOCAL(user))
 497         {
 498                 if (!this->HasUser(user))
 499                 {
 500                         /* Not on channel */
 501                         return this->GetUserCounter();
 502                 }
 503         }
 504
 505         if (triggerevents)
 506         {
 507                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 508         }
 509
 510         UCListIter i = user->chans.find(this);
 511         if (i != user->chans.end())
 512         {
 513                 if (!silent)
 514                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 515
 516                 user->chans.erase(i);
 517                 this->RemoveAllPrefixes(user);
 518         }
 519
 520         if (!this->DelUser(user))
 521         {
 522                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 523                 /* kill the record */
 524                 if (iter != ServerInstance->chanlist->end())
 525                 {
 526                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 527                         ServerInstance->chanlist->erase(iter);
 528                 }
 529                 return 0;
 530         }
 531
 532         return this->GetUserCounter();
 533 }
 534
 535 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 536 {
 537         bool silent = false;
 538
 539         if (!src || !user || !reason)
 540                 return this->GetUserCounter();
 541
 542         if (IS_LOCAL(src))
 543         {
 544                 if (!this->HasUser(user))
 545                 {
 546                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 547                         return this->GetUserCounter();
 548                 }
 549                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 550                 {
 551                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 552                         return this->GetUserCounter();
 553                 }
 554                 int MOD_RESULT = 0;
 555
 556                 if (!ServerInstance->ULine(src->server))
 557                 {
 558                         MOD_RESULT = 0;
 559                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 560                         if (MOD_RESULT == 1)
 561                                 return this->GetUserCounter();
 562                 }
 563                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 564                 if (MOD_RESULT != -1)
 565                 {
 566                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 567                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 568                                 return this->GetUserCounter();
 569
 570                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 571                         {
 572                                 int them = this->GetStatus(src);
 573                                 int us = this->GetStatus(user);
 574                                 if ((them < STATUS_HOP) || (them < us))
 575                                 {
 576                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 577                                         return this->GetUserCounter();
 578                                 }
 579                         }
 580                 }
 581         }
 582
 583         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 584
 585         UCListIter i = user->chans.find(this);
 586         if (i != user->chans.end())
 587         {
 588                 /* zap it from the channel list of the user */
 589                 if (!silent)
 590                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 591
 592                 user->chans.erase(i);
 593                 this->RemoveAllPrefixes(user);
 594         }
 595
 596         if (!this->DelUser(user))
 597         /* if there are no users left on the channel */
 598         {
 599                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 600
 601                 /* kill the record */
 602                 if (iter != ServerInstance->chanlist->end())
 603                 {
 604                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 605                         ServerInstance->chanlist->erase(iter);
 606                 }
 607                 return 0;
 608         }
 609
 610         return this->GetUserCounter();
 611 }
 612
 613 void chanrec::WriteChannel(userrec* user, char* text, ...)
 614 {
 615         char textbuffer[MAXBUF];
 616         va_list argsPtr;
 617
 618         if (!user || !text)
 619                 return;
 620
 621         va_start(argsPtr, text);
 622         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 623         va_end(argsPtr);
 624
 625         this->WriteChannel(user, std::string(textbuffer));
 626 }
 627
 628 void chanrec::WriteChannel(userrec* user, const std::string &text)
 629 {
 630         CUList *ulist = this->GetUsers();
 631         char tb[MAXBUF];
 632
 633         if (!user)
 634                 return;
 635
 636         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 637         std::string out = tb;
 638
 639         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 640         {
 641                 if (IS_LOCAL(i->first))
 642                         i->first->Write(out);
 643         }
 644 }
 645
 646 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 647 {
 648         char textbuffer[MAXBUF];
 649         va_list argsPtr;
 650
 651         if (!text)
 652                 return;
 653
 654         va_start(argsPtr, text);
 655         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 656         va_end(argsPtr);
 657
 658         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 659 }
 660
 661 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 662 {
 663         CUList *ulist = this->GetUsers();
 664         char tb[MAXBUF];
 665
 666         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 667         std::string out = tb;
 668
 669         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 670         {
 671                 if (IS_LOCAL(i->first))
 672                         i->first->Write(out);
 673         }
 674 }
 675
 676 /* write formatted text from a source user to all users on a channel except
 677  * for the sender (for privmsg etc) */
 678 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 679 {
 680         char textbuffer[MAXBUF];
 681         va_list argsPtr;
 682
 683         if (!text)
 684                 return;
 685
 686         va_start(argsPtr, text);
 687         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 688         va_end(argsPtr);
 689
 690         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 691 }
 692
 693 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 694 {
 695         char textbuffer[MAXBUF];
 696         va_list argsPtr;
 697
 698         if (!text)
 699                 return;
 700
 701         va_start(argsPtr, text);
 702         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 703         va_end(argsPtr);
 704
 705         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 706 }
 707
 708 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 709 {
 710         CUList *ulist;
 711         char tb[MAXBUF];
 712
 713         switch (status)
 714         {
 715                 case '@':
 716                         ulist = this->GetOppedUsers();
 717                         break;
 718                 case '%':
 719                         ulist = this->GetHalfoppedUsers();
 720                         break;
 721                 case '+':
 722                         ulist = this->GetVoicedUsers();
 723                         break;
 724                 default:
 725                         ulist = this->GetUsers();
 726                         break;
 727         }
 728
 729         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 730         std::string out = tb;
 731
 732         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 733         {
 734                 if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
 735                 {
 736                         if (serversource)
 737                                 i->first->WriteServ(text);
 738                         else
 739                                 i->first->Write(out);
 740                 }
 741         }
 742 }
 743
 744 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 745 {
 746         CUList except_list;
 747         except_list[user] = user->nick;
 748         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 749 }
 750
 751 /*
 752  * return a count of the users on a specific channel accounting for
 753  * invisible users who won't increase the count. e.g. for /LIST
 754  */
 755 int chanrec::CountInvisible()
 756 {
 757         int count = 0;
 758         CUList *ulist= this->GetUsers();
 759         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 760         {
 761                 if (!(i->first->IsModeSet('i')))
 762                         count++;
 763         }
 764
 765         return count;
 766 }
 767
 768 char* chanrec::ChanModes(bool showkey)
 769 {
 770         static char scratch[MAXBUF];
 771         static char sparam[MAXBUF];
 772         char* offset = scratch;
 773         std::string extparam;
 774
 775         *scratch = '\0';
 776         *sparam = '\0';
 777
 778         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 779         for(int n = 0; n < 64; n++)
 780         {
 781                 if(this->modes[n])
 782                 {
 783                         *offset++ = n + 65;
 784                         extparam.clear();
 785                         switch (n)
 786                         {
 787                                 case CM_KEY:
 788                                         extparam = (showkey ? this->key : "<key>");
 789                                 break;
 790                                 case CM_LIMIT:
 791                                         extparam = ConvToStr(this->limit);
 792                                 break;
 793                                 case CM_NOEXTERNAL:
 794                                 case CM_TOPICLOCK:
 795                                 case CM_INVITEONLY:
 796                                 case CM_MODERATED:
 797                                 case CM_SECRET:
 798                                 case CM_PRIVATE:
 799                                         /* We know these have no parameters */
 800                                 break;
 801                                 default:
 802                                         extparam = this->GetModeParameter(n + 65);
 803                                 break;
 804                         }
 805                         if (!extparam.empty())
 806                         {
 807                                 charlcat(sparam,' ',MAXBUF);
 808                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 809                         }
 810                 }
 811         }
 812
 813         /* Null terminate scratch */
 814         *offset = '\0';
 815         strlcat(scratch,sparam,MAXBUF);
 816         return scratch;
 817 }
 818
 819 /* compile a userlist of a channel into a string, each nick seperated by
 820  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 821  */
 822 void chanrec::UserList(userrec *user, CUList *ulist)
 823 {
 824         char list[MAXBUF];
 825         size_t dlen, curlen;
 826         int MOD_RESULT = 0;
 827
 828         if (!IS_LOCAL(user))
 829                 return;
 830
 831         FOREACH_RESULT(I_OnUserList,OnUserList(user, this, ulist));
 832         if (MOD_RESULT == 1)
 833                 return;
 834
 835         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 836
 837         int numusers = 0;
 838         char* ptr = list + dlen;
 839
 840         if (!ulist)
 841                 ulist = this->GetUsers();
 842
 843         /* Improvement by Brain - this doesnt change in value, so why was it inside
 844          * the loop?
 845          */
 846         bool has_user = this->HasUser(user);
 847
 848         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 849         {
 850                 if ((!has_user) && (i->first->IsModeSet('i')))
 851                 {
 852                         /*
 853                          * user is +i, and source not on the channel, does not show
 854                          * nick in NAMES list
 855                          */
 856                         continue;
 857                 }
 858
 859                 if (i->first->Visibility && !i->first->Visibility->VisibleTo(user))
 860                         continue;
 861
 862                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->first), i->second.c_str());
 863                 /* OnUserList can change this - reset it back to normal */
 864                 i->second = i->first->nick;
 865
 866                 curlen += ptrlen;
 867                 ptr += ptrlen;
 868
 869                 numusers++;
 870
 871                 if (curlen > (480-NICKMAX))
 872                 {
 873                         /* list overflowed into multiple numerics */
 874                         user->WriteServ(std::string(list));
 875
 876                         /* reset our lengths */
 877                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 878                         ptr = list + dlen;
 879
 880                         ptrlen = 0;
 881                         numusers = 0;
 882                 }
 883         }
 884
 885         /* if whats left in the list isnt empty, send it */
 886         if (numusers)
 887         {
 888                 user->WriteServ(std::string(list));
 889         }
 890
 891         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 892 }
 893
 894 long chanrec::GetMaxBans()
 895 {
 896         /* Return the cached value if there is one */
 897         if (this->maxbans)
 898                 return this->maxbans;
 899
 900         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 901         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 902         {
 903                 if (match(this->name,n->first.c_str()))
 904                 {
 905                         this->maxbans = n->second;
 906                         return n->second;
 907                 }
 908         }
 909
 910         /* Screw it, just return the default of 64 */
 911         this->maxbans = 64;
 912         return this->maxbans;
 913 }
 914
 915 void chanrec::ResetMaxBans()
 916 {
 917         this->maxbans = 0;
 918 }
 919
 920 /* returns the status character for a given user on a channel, e.g. @ for op,
 921  * % for halfop etc. If the user has several modes set, the highest mode
 922  * the user has must be returned.
 923  */
 924 const char* chanrec::GetPrefixChar(userrec *user)
 925 {
 926         static char pf[2] = {0, 0};
 927
 928         prefixlist::iterator n = prefixes.find(user);
 929         if (n != prefixes.end())
 930         {
 931                 if (n->second.size())
 932                 {
 933                         /* If the user has any prefixes, their highest prefix
 934                          * will always be at the head of the list, as the list is
 935                          * sorted in rank order highest first (see SetPrefix()
 936                          * for reasons why)
 937                          */
 938                         *pf = n->second.begin()->first;
 939                         return pf;
 940                 }
 941         }
 942
 943         *pf = 0;
 944         return pf;
 945 }
 946
 947 const char* chanrec::GetAllPrefixChars(userrec* user)
 948 {
 949         static char prefix[MAXBUF];
 950         int ctr = 0;
 951         *prefix = 0;
 952
 953         prefixlist::iterator n = prefixes.find(user);
 954         if (n != prefixes.end())
 955         {
 956                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 957                 {
 958                         prefix[ctr++] = x->first;
 959                 }
 960         }
 961
 962         prefix[ctr] = 0;
 963
 964         return prefix;
 965 }
 966
 967 unsigned int chanrec::GetPrefixValue(userrec* user)
 968 {
 969         prefixlist::iterator n = prefixes.find(user);
 970         if (n != prefixes.end())
 971         {
 972                 if (n->second.size())
 973                         return n->second.begin()->second;
 974         }
 975         return 0;
 976 }
 977
 978 int chanrec::GetStatusFlags(userrec *user)
 979 {
 980         UCListIter i = user->chans.find(this);
 981         if (i != user->chans.end())
 982         {
 983                 return i->second;
 984         }
 985         return 0;
 986 }
 987
 988 int chanrec::GetStatus(userrec *user)
 989 {
 990         if (ServerInstance->ULine(user->server))
 991                 return STATUS_OP;
 992
 993         UCListIter i = user->chans.find(this);
 994         if (i != user->chans.end())
 995         {
 996                 if ((i->second & UCMODE_OP) > 0)
 997                 {
 998                         return STATUS_OP;
 999                 }
1000                 if ((i->second & UCMODE_HOP) > 0)
1001                 {
1002                         return STATUS_HOP;
1003                 }
1004                 if ((i->second & UCMODE_VOICE) > 0)
1005                 {
1006                         return STATUS_VOICE;
1007                 }
1008                 return STATUS_NORMAL;
1009         }
1010         return STATUS_NORMAL;
1011 }
1012
1013 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1014 {
1015         prefixlist::iterator n = prefixes.find(user);
1016         prefixtype pfx = std::make_pair(prefix,prefix_value);
1017         if (adding)
1018         {
1019                 if (n != prefixes.end())
1020                 {
1021                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1022                         {
1023                                 n->second.push_back(pfx);
1024                                 /* We must keep prefixes in rank order, largest first.
1025                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1026                                  * state, and secondly it turns out to be a benefit to us later.
1027                                  * See above in GetPrefix().
1028                                  */
1029                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1030                         }
1031                 }
1032                 else
1033                 {
1034                         pfxcontainer one;
1035                         one.push_back(pfx);
1036                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1037                 }
1038         }
1039         else
1040         {
1041                 if (n != prefixes.end())
1042                 {
1043                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1044                         if (x != n->second.end())
1045                                 n->second.erase(x);
1046                 }
1047         }
1048 }
1049
1050 void chanrec::RemoveAllPrefixes(userrec* user)
1051 {
1052         prefixlist::iterator n = prefixes.find(user);
1053         if (n != prefixes.end())
1054         {
1055                 prefixes.erase(n);
1056         }
1057 }
1058