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         bool new_channel = false;
 210         char cname[MAXBUF];
 211         int MOD_RESULT = 0;
 212         strlcpy(cname,cn,CHANMAX);
 213
 214         std::string privs;
 215
 216         chanrec* Ptr = Instance->FindChan(cname);
 217
 218         if (!Ptr)
 219         {
 220                 if ((!IS_LOCAL(user)) && (!TS))
 221                         Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 222
 223                 privs = "@";
 224
 225                 if (IS_LOCAL(user) && override == false)
 226                 {
 227                         MOD_RESULT = 0;
 228                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 229                         if (MOD_RESULT == 1)
 230                                 return NULL;
 231                 }
 232
 233                 /* create a new one */
 234                 Ptr = new chanrec(Instance);
 235                 (*(Instance->chanlist))[cname] = Ptr;
 236
 237                 strlcpy(Ptr->name, cname,CHANMAX);
 238
 239                 /* As spotted by jilles, dont bother to set this on remote users */
 240                 if (IS_LOCAL(user))
 241                         Ptr->SetDefaultModes();
 242
 243                 Ptr->created = TS ? TS : Instance->Time();
 244                 Ptr->age = Ptr->created;
 245                 *Ptr->topic = 0;
 246                 *Ptr->setby = 0;
 247                 Ptr->topicset = 0;
 248                 new_channel = true;
 249         }
 250         else
 251         {
 252                 /* Already on the channel */
 253                 if (Ptr->HasUser(user))
 254                         return NULL;
 255
 256                 /*
 257                  * remote users are allowed us to bypass channel modes
 258                  * and bans (used by servers)
 259                  */
 260                 if (IS_LOCAL(user) && override == false)
 261                 {
 262                         MOD_RESULT = 0;
 263                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 264                         if (MOD_RESULT == 1)
 265                         {
 266                                 return NULL;
 267                         }
 268                         else if (MOD_RESULT == 0)
 269                         {
 270                                 if (*Ptr->key)
 271                                 {
 272                                         MOD_RESULT = 0;
 273                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 274                                         if (!MOD_RESULT)
 275                                         {
 276                                                 if ((!key) || strcmp(key,Ptr->key))
 277                                                 {
 278                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 279                                                         return NULL;
 280                                                 }
 281                                         }
 282                                 }
 283                                 if (Ptr->modes[CM_INVITEONLY])
 284                                 {
 285                                         MOD_RESULT = 0;
 286                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 287                                         if (!MOD_RESULT)
 288                                         {
 289                                                 if (user->IsInvited(Ptr->name))
 290                                                 {
 291                                                         /* user was invited to channel */
 292                                                         /* there may be an optional channel NOTICE here */
 293                                                 }
 294                                                 else
 295                                                 {
 296                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 297                                                         return NULL;
 298                                                 }
 299                                         }
 300                                         user->RemoveInvite(Ptr->name);
 301                                 }
 302                                 if (Ptr->limit)
 303                                 {
 304                                         MOD_RESULT = 0;
 305                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 306                                         if (!MOD_RESULT)
 307                                         {
 308                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 309                                                 {
 310                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 311                                                         return NULL;
 312                                                 }
 313                                         }
 314                                 }
 315                                 if (Ptr->bans.size())
 316                                 {
 317                                         if (Ptr->IsBanned(user))
 318                                         {
 319                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 320                                                 return NULL;
 321                                         }
 322                                 }
 323                         }
 324                 }
 325         }
 326
 327         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 328          * OperMaxchans. For remote users which are not bound by the channel limits,
 329          * we can extend infinitely. Otherwise, nope, youre restricted to MaxChans.
 330          */
 331         if (!IS_LOCAL(user) || override == true)
 332         {
 333                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 334         }
 335         else if (IS_OPER(user))
 336         {
 337                 /* Oper allows extension up to the OperMaxchans value */
 338                 if (user->chans.size() < Instance->Config->OperMaxChans)
 339                 {
 340                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 341                 }
 342         }
 343         else if (user->chans.size() < Instance->Config->MaxChans)
 344         {
 345                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 346         }
 347
 348
 349         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 350
 351         if (new_channel)
 352         {
 353                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 354                 chan_hash::iterator n = Instance->chanlist->find(cname);
 355                 if (n != Instance->chanlist->end())
 356                 {
 357                         Ptr->DelUser(user);
 358                         DELETE(Ptr);
 359                         Instance->chanlist->erase(n);
 360                 }
 361         }
 362
 363         return NULL;
 364 }
 365
 366 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 367 {
 368         userrec* dummyuser = new userrec(Instance);
 369         std::string nick = user->nick;
 370         bool silent = false;
 371
 372         dummyuser->SetFd(FD_MAGIC_NUMBER);
 373         Ptr->AddUser(user);
 374
 375         /* Just in case they have no permissions */
 376         user->chans[Ptr] = 0;
 377
 378         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 379         {
 380                 const char status = *x;
 381                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 382                 if (mh)
 383                 {
 384                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 385                         /* Make sure that the mode handler knows this mode was now set */
 386                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 387
 388                         switch (mh->GetPrefix())
 389                         {
 390                                 /* These logic ops are SAFE IN THIS CASE
 391                                  * because if the entry doesnt exist,
 392                                  * addressing operator[] creates it.
 393                                  * If they do exist, it points to it.
 394                                  * At all other times where we dont want
 395                                  * to create an item if it doesnt exist, we
 396                                  * must stick to ::find().
 397                                  */
 398                                 case '@':
 399                                         user->chans[Ptr] |= UCMODE_OP;
 400                                 break;
 401                                 case '%':
 402                                         user->chans[Ptr] |= UCMODE_HOP;
 403                                 break;
 404                                 case '+':
 405                                         user->chans[Ptr] |= UCMODE_VOICE;
 406                                 break;
 407                         }
 408                 }
 409         }
 410
 411         delete dummyuser;
 412
 413         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 414
 415         if (!silent)
 416                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 417
 418         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 419         std::string ms = Instance->Modes->ModeString(user, Ptr);
 420         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 421                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 422
 423         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 424         if (IS_LOCAL(user))
 425         {
 426                 if (Ptr->topicset)
 427                 {
 428                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 429                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 430                 }
 431                 Ptr->UserList(user);
 432         }
 433         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 434         return Ptr;
 435 }
 436
 437 bool chanrec::IsBanned(userrec* user)
 438 {
 439         char mask[MAXBUF];
 440         int MOD_RESULT = 0;
 441         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 442         if (!MOD_RESULT)
 443         {
 444                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 445                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 446                 {
 447                         /* This allows CIDR ban matching
 448                          *
 449                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 450                          */
 451                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 452                         {
 453                                 return true;
 454                         }
 455                 }
 456         }
 457         return false;
 458 }
 459
 460 /* chanrec::PartUser
 461  * remove a channel from a users record, and return the number of users left.
 462  * Therefore, if this function returns 0 the caller should delete the chanrec.
 463  */
 464 long chanrec::PartUser(userrec *user, const char* reason)
 465 {
 466         bool silent = false;
 467
 468         if (!user)
 469                 return this->GetUserCounter();
 470
 471         UCListIter i = user->chans.find(this);
 472         if (i != user->chans.end())
 473         {
 474                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 475
 476                 if (!silent)
 477                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 478
 479                 user->chans.erase(i);
 480                 this->RemoveAllPrefixes(user);
 481         }
 482
 483         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 484         {
 485                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 486                 /* kill the record */
 487                 if (iter != ServerInstance->chanlist->end())
 488                 {
 489                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 490                         ServerInstance->chanlist->erase(iter);
 491                 }
 492                 return 0;
 493         }
 494
 495         return this->GetUserCounter();
 496 }
 497
 498 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 499 {
 500         bool silent = false;
 501
 502         if (!user || !reason)
 503                 return this->GetUserCounter();
 504
 505         if (IS_LOCAL(user))
 506         {
 507                 if (!this->HasUser(user))
 508                 {
 509                         /* Not on channel */
 510                         return this->GetUserCounter();
 511                 }
 512         }
 513
 514         if (triggerevents)
 515         {
 516                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 517         }
 518
 519         UCListIter i = user->chans.find(this);
 520         if (i != user->chans.end())
 521         {
 522                 if (!silent)
 523                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 524
 525                 user->chans.erase(i);
 526                 this->RemoveAllPrefixes(user);
 527         }
 528
 529         if (!this->DelUser(user))
 530         {
 531                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 532                 /* kill the record */
 533                 if (iter != ServerInstance->chanlist->end())
 534                 {
 535                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 536                         ServerInstance->chanlist->erase(iter);
 537                 }
 538                 return 0;
 539         }
 540
 541         return this->GetUserCounter();
 542 }
 543
 544 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 545 {
 546         bool silent = false;
 547
 548         if (!src || !user || !reason)
 549                 return this->GetUserCounter();
 550
 551         if (IS_LOCAL(src))
 552         {
 553                 if (!this->HasUser(user))
 554                 {
 555                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 556                         return this->GetUserCounter();
 557                 }
 558                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 559                 {
 560                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 561                         return this->GetUserCounter();
 562                 }
 563                 int MOD_RESULT = 0;
 564
 565                 if (!ServerInstance->ULine(src->server))
 566                 {
 567                         MOD_RESULT = 0;
 568                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 569                         if (MOD_RESULT == 1)
 570                                 return this->GetUserCounter();
 571                 }
 572                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 573                 if (MOD_RESULT != -1)
 574                 {
 575                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 576                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 577                                 return this->GetUserCounter();
 578
 579                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 580                         {
 581                                 int them = this->GetStatus(src);
 582                                 int us = this->GetStatus(user);
 583                                 if ((them < STATUS_HOP) || (them < us))
 584                                 {
 585                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 586                                         return this->GetUserCounter();
 587                                 }
 588                         }
 589                 }
 590         }
 591
 592         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 593
 594         UCListIter i = user->chans.find(this);
 595         if (i != user->chans.end())
 596         {
 597                 /* zap it from the channel list of the user */
 598                 if (!silent)
 599                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 600
 601                 user->chans.erase(i);
 602                 this->RemoveAllPrefixes(user);
 603         }
 604
 605         if (!this->DelUser(user))
 606         /* if there are no users left on the channel */
 607         {
 608                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 609
 610                 /* kill the record */
 611                 if (iter != ServerInstance->chanlist->end())
 612                 {
 613                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 614                         ServerInstance->chanlist->erase(iter);
 615                 }
 616                 return 0;
 617         }
 618
 619         return this->GetUserCounter();
 620 }
 621
 622 void chanrec::WriteChannel(userrec* user, char* text, ...)
 623 {
 624         char textbuffer[MAXBUF];
 625         va_list argsPtr;
 626
 627         if (!user || !text)
 628                 return;
 629
 630         va_start(argsPtr, text);
 631         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 632         va_end(argsPtr);
 633
 634         this->WriteChannel(user, std::string(textbuffer));
 635 }
 636
 637 void chanrec::WriteChannel(userrec* user, const std::string &text)
 638 {
 639         CUList *ulist = this->GetUsers();
 640         char tb[MAXBUF];
 641
 642         if (!user)
 643                 return;
 644
 645         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 646         std::string out = tb;
 647
 648         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 649         {
 650                 if (IS_LOCAL(i->first))
 651                         i->first->Write(out);
 652         }
 653 }
 654
 655 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 656 {
 657         char textbuffer[MAXBUF];
 658         va_list argsPtr;
 659
 660         if (!text)
 661                 return;
 662
 663         va_start(argsPtr, text);
 664         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 665         va_end(argsPtr);
 666
 667         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 668 }
 669
 670 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 671 {
 672         CUList *ulist = this->GetUsers();
 673         char tb[MAXBUF];
 674
 675         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 676         std::string out = tb;
 677
 678         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 679         {
 680                 if (IS_LOCAL(i->first))
 681                         i->first->Write(out);
 682         }
 683 }
 684
 685 /* write formatted text from a source user to all users on a channel except
 686  * for the sender (for privmsg etc) */
 687 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 688 {
 689         char textbuffer[MAXBUF];
 690         va_list argsPtr;
 691
 692         if (!text)
 693                 return;
 694
 695         va_start(argsPtr, text);
 696         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 697         va_end(argsPtr);
 698
 699         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 700 }
 701
 702 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 703 {
 704         char textbuffer[MAXBUF];
 705         va_list argsPtr;
 706
 707         if (!text)
 708                 return;
 709
 710         va_start(argsPtr, text);
 711         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 712         va_end(argsPtr);
 713
 714         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 715 }
 716
 717 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 718 {
 719         CUList *ulist;
 720         char tb[MAXBUF];
 721
 722         switch (status)
 723         {
 724                 case '@':
 725                         ulist = this->GetOppedUsers();
 726                         break;
 727                 case '%':
 728                         ulist = this->GetHalfoppedUsers();
 729                         break;
 730                 case '+':
 731                         ulist = this->GetVoicedUsers();
 732                         break;
 733                 default:
 734                         ulist = this->GetUsers();
 735                         break;
 736         }
 737
 738         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 739         std::string out = tb;
 740
 741         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 742         {
 743                 if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
 744                 {
 745                         if (serversource)
 746                                 i->first->WriteServ(text);
 747                         else
 748                                 i->first->Write(out);
 749                 }
 750         }
 751 }
 752
 753 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 754 {
 755         CUList except_list;
 756         except_list[user] = user->nick;
 757         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 758 }
 759
 760 /*
 761  * return a count of the users on a specific channel accounting for
 762  * invisible users who won't increase the count. e.g. for /LIST
 763  */
 764 int chanrec::CountInvisible()
 765 {
 766         int count = 0;
 767         CUList *ulist= this->GetUsers();
 768         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 769         {
 770                 if (!(i->first->IsModeSet('i')))
 771                         count++;
 772         }
 773
 774         return count;
 775 }
 776
 777 char* chanrec::ChanModes(bool showkey)
 778 {
 779         static char scratch[MAXBUF];
 780         static char sparam[MAXBUF];
 781         char* offset = scratch;
 782         std::string extparam;
 783
 784         *scratch = '\0';
 785         *sparam = '\0';
 786
 787         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 788         for(int n = 0; n < 64; n++)
 789         {
 790                 if(this->modes[n])
 791                 {
 792                         *offset++ = n + 65;
 793                         extparam.clear();
 794                         switch (n)
 795                         {
 796                                 case CM_KEY:
 797                                         extparam = (showkey ? this->key : "<key>");
 798                                 break;
 799                                 case CM_LIMIT:
 800                                         extparam = ConvToStr(this->limit);
 801                                 break;
 802                                 case CM_NOEXTERNAL:
 803                                 case CM_TOPICLOCK:
 804                                 case CM_INVITEONLY:
 805                                 case CM_MODERATED:
 806                                 case CM_SECRET:
 807                                 case CM_PRIVATE:
 808                                         /* We know these have no parameters */
 809                                 break;
 810                                 default:
 811                                         extparam = this->GetModeParameter(n + 65);
 812                                 break;
 813                         }
 814                         if (!extparam.empty())
 815                         {
 816                                 charlcat(sparam,' ',MAXBUF);
 817                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 818                         }
 819                 }
 820         }
 821
 822         /* Null terminate scratch */
 823         *offset = '\0';
 824         strlcat(scratch,sparam,MAXBUF);
 825         return scratch;
 826 }
 827
 828 /* compile a userlist of a channel into a string, each nick seperated by
 829  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 830  */
 831 void chanrec::UserList(userrec *user, CUList *ulist)
 832 {
 833         char list[MAXBUF];
 834         size_t dlen, curlen;
 835         int MOD_RESULT = 0;
 836
 837         if (!IS_LOCAL(user))
 838                 return;
 839
 840         FOREACH_RESULT(I_OnUserList,OnUserList(user, this, ulist));
 841         if (MOD_RESULT == 1)
 842                 return;
 843
 844         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 845
 846         int numusers = 0;
 847         char* ptr = list + dlen;
 848
 849         if (!ulist)
 850                 ulist = this->GetUsers();
 851
 852         /* Improvement by Brain - this doesnt change in value, so why was it inside
 853          * the loop?
 854          */
 855         bool has_user = this->HasUser(user);
 856
 857         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 858         {
 859                 if ((!has_user) && (i->first->modes[UM_INVISIBLE]))
 860                 {
 861                         /*
 862                          * user is +i, and source not on the channel, does not show
 863                          * nick in NAMES list
 864                          */
 865                         continue;
 866                 }
 867
 868                 if (i->first->Visibility && !i->first->Visibility->VisibleTo(user))
 869                         continue;
 870
 871                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->first), i->second.c_str());
 872                 /* OnUserList can change this - reset it back to normal */
 873                 i->second = i->first->nick;
 874
 875                 curlen += ptrlen;
 876                 ptr += ptrlen;
 877
 878                 numusers++;
 879
 880                 if (curlen > (480-NICKMAX))
 881                 {
 882                         /* list overflowed into multiple numerics */
 883                         user->WriteServ(std::string(list));
 884
 885                         /* reset our lengths */
 886                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 887                         ptr = list + dlen;
 888
 889                         ptrlen = 0;
 890                         numusers = 0;
 891                 }
 892         }
 893
 894         /* if whats left in the list isnt empty, send it */
 895         if (numusers)
 896         {
 897                 user->WriteServ(std::string(list));
 898         }
 899
 900         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 901 }
 902
 903 long chanrec::GetMaxBans()
 904 {
 905         /* Return the cached value if there is one */
 906         if (this->maxbans)
 907                 return this->maxbans;
 908
 909         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 910         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 911         {
 912                 if (match(this->name,n->first.c_str()))
 913                 {
 914                         this->maxbans = n->second;
 915                         return n->second;
 916                 }
 917         }
 918
 919         /* Screw it, just return the default of 64 */
 920         this->maxbans = 64;
 921         return this->maxbans;
 922 }
 923
 924 void chanrec::ResetMaxBans()
 925 {
 926         this->maxbans = 0;
 927 }
 928
 929 /* returns the status character for a given user on a channel, e.g. @ for op,
 930  * % for halfop etc. If the user has several modes set, the highest mode
 931  * the user has must be returned.
 932  */
 933 const char* chanrec::GetPrefixChar(userrec *user)
 934 {
 935         static char pf[2] = {0, 0};
 936
 937         prefixlist::iterator n = prefixes.find(user);
 938         if (n != prefixes.end())
 939         {
 940                 if (n->second.size())
 941                 {
 942                         /* If the user has any prefixes, their highest prefix
 943                          * will always be at the head of the list, as the list is
 944                          * sorted in rank order highest first (see SetPrefix()
 945                          * for reasons why)
 946                          */
 947                         *pf = n->second.begin()->first;
 948                         return pf;
 949                 }
 950         }
 951
 952         *pf = 0;
 953         return pf;
 954 }
 955
 956 const char* chanrec::GetAllPrefixChars(userrec* user)
 957 {
 958         static char prefix[MAXBUF];
 959         int ctr = 0;
 960         *prefix = 0;
 961
 962         prefixlist::iterator n = prefixes.find(user);
 963         if (n != prefixes.end())
 964         {
 965                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 966                 {
 967                         prefix[ctr++] = x->first;
 968                 }
 969         }
 970
 971         prefix[ctr] = 0;
 972
 973         return prefix;
 974 }
 975
 976 unsigned int chanrec::GetPrefixValue(userrec* user)
 977 {
 978         prefixlist::iterator n = prefixes.find(user);
 979         if (n != prefixes.end())
 980         {
 981                 if (n->second.size())
 982                         return n->second.begin()->second;
 983         }
 984         return 0;
 985 }
 986
 987 int chanrec::GetStatusFlags(userrec *user)
 988 {
 989         UCListIter i = user->chans.find(this);
 990         if (i != user->chans.end())
 991         {
 992                 return i->second;
 993         }
 994         return 0;
 995 }
 996
 997 int chanrec::GetStatus(userrec *user)
 998 {
 999         if (ServerInstance->ULine(user->server))
1000                 return STATUS_OP;
1001
1002         UCListIter i = user->chans.find(this);
1003         if (i != user->chans.end())
1004         {
1005                 if ((i->second & UCMODE_OP) > 0)
1006                 {
1007                         return STATUS_OP;
1008                 }
1009                 if ((i->second & UCMODE_HOP) > 0)
1010                 {
1011                         return STATUS_HOP;
1012                 }
1013                 if ((i->second & UCMODE_VOICE) > 0)
1014                 {
1015                         return STATUS_VOICE;
1016                 }
1017                 return STATUS_NORMAL;
1018         }
1019         return STATUS_NORMAL;
1020 }
1021
1022 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
1023 {
1024         prefixlist::iterator n = prefixes.find(user);
1025         prefixtype pfx = std::make_pair(prefix,prefix_value);
1026         if (adding)
1027         {
1028                 if (n != prefixes.end())
1029                 {
1030                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1031                         {
1032                                 n->second.push_back(pfx);
1033                                 /* We must keep prefixes in rank order, largest first.
1034                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1035                                  * state, and secondly it turns out to be a benefit to us later.
1036                                  * See above in GetPrefix().
1037                                  */
1038                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1039                         }
1040                 }
1041                 else
1042                 {
1043                         pfxcontainer one;
1044                         one.push_back(pfx);
1045                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1046                 }
1047         }
1048         else
1049         {
1050                 if (n != prefixes.end())
1051                 {
1052                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1053                         if (x != n->second.end())
1054                                 n->second.erase(x);
1055                 }
1056         }
1057 }
1058
1059 void chanrec::RemoveAllPrefixes(userrec* user)
1060 {
1061         prefixlist::iterator n = prefixes.find(user);
1062         if (n != prefixes.end())
1063         {
1064                 prefixes.erase(n);
1065         }
1066 }
1067