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 <stdarg.h>
  15 #include "configreader.h"
  16 #include "inspircd.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;
  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;
 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;
 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;
 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 /*
 176  * add a channel to a user, creating the record for it if needed and linking
 177  * it to the user record
 178  */
 179 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key, time_t TS)
 180 {
 181         if (!user || !cn)
 182                 return NULL;
 183
 184         bool new_channel = false;
 185         char cname[MAXBUF];
 186         int MOD_RESULT = 0;
 187         strlcpy(cname,cn,CHANMAX);
 188
 189         std::string privs;
 190
 191         chanrec* Ptr = Instance->FindChan(cname);
 192
 193         if (!Ptr)
 194         {
 195                 if ((!IS_LOCAL(user)) && (!TS))
 196                         Instance->Log(DEBUG,"*** BUG *** chanrec::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick, cn);
 197
 198                 privs = "@";
 199
 200                 if (IS_LOCAL(user) && override == false)
 201                 {
 202                         MOD_RESULT = 0;
 203                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 204                         if (MOD_RESULT == 1)
 205                                 return NULL;
 206                 }
 207
 208                 /* create a new one */
 209                 Ptr = new chanrec(Instance);
 210                 (*(Instance->chanlist))[cname] = Ptr;
 211
 212                 strlcpy(Ptr->name, cname,CHANMAX);
 213
 214                 /* As spotted by jilles, dont bother to set this on remote users */
 215                 if (IS_LOCAL(user))
 216                         Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 217
 218                 Ptr->created = TS ? TS : Instance->Time();
 219                 *Ptr->topic = 0;
 220                 *Ptr->setby = 0;
 221                 Ptr->topicset = 0;
 222                 new_channel = true;
 223         }
 224         else
 225         {
 226                 /* Already on the channel */
 227                 if (Ptr->HasUser(user))
 228                         return NULL;
 229
 230                 /*
 231                  * remote users are allowed us to bypass channel modes
 232                  * and bans (used by servers)
 233                  */
 234                 if (IS_LOCAL(user) && override == false)
 235                 {
 236                         MOD_RESULT = 0;
 237                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 238                         if (MOD_RESULT == 1)
 239                         {
 240                                 return NULL;
 241                         }
 242                         else if (MOD_RESULT == 0)
 243                         {
 244                                 if (*Ptr->key)
 245                                 {
 246                                         MOD_RESULT = 0;
 247                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 248                                         if (!MOD_RESULT)
 249                                         {
 250                                                 if ((!key) || strcmp(key,Ptr->key))
 251                                                 {
 252                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 253                                                         return NULL;
 254                                                 }
 255                                         }
 256                                 }
 257                                 if (Ptr->modes[CM_INVITEONLY])
 258                                 {
 259                                         MOD_RESULT = 0;
 260                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 261                                         if (!MOD_RESULT)
 262                                         {
 263                                                 if (user->IsInvited(Ptr->name))
 264                                                 {
 265                                                         /* user was invited to channel */
 266                                                         /* there may be an optional channel NOTICE here */
 267                                                 }
 268                                                 else
 269                                                 {
 270                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 271                                                         return NULL;
 272                                                 }
 273                                         }
 274                                         user->RemoveInvite(Ptr->name);
 275                                 }
 276                                 if (Ptr->limit)
 277                                 {
 278                                         MOD_RESULT = 0;
 279                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 280                                         if (!MOD_RESULT)
 281                                         {
 282                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 283                                                 {
 284                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 285                                                         return NULL;
 286                                                 }
 287                                         }
 288                                 }
 289                                 if (Ptr->bans.size())
 290                                 {
 291                                         if (Ptr->IsBanned(user))
 292                                         {
 293                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 294                                                 return NULL;
 295                                         }
 296                                 }
 297                         }
 298                 }
 299         }
 300
 301         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 302          * OperMaxchans. For remote users which are not bound by the channel limits,
 303          * we can extend infinitely. Otherwise, nope, youre restricted to MaxChans.
 304          */
 305         if (!IS_LOCAL(user) || override == true)
 306         {
 307                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 308         }
 309         else if (*user->oper)
 310         {
 311                 /* Oper allows extension up to the OperMaxchans value */
 312                 if (user->chans.size() < Instance->Config->OperMaxChans)
 313                 {
 314                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 315                 }
 316         }
 317         else if (user->chans.size() < Instance->Config->MaxChans)
 318         {
 319                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 320         }
 321
 322
 323         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 324
 325         if (new_channel)
 326         {
 327                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 328                 chan_hash::iterator n = Instance->chanlist->find(cname);
 329                 if (n != Instance->chanlist->end())
 330                 {
 331                         Ptr->DelUser(user);
 332                         DELETE(Ptr);
 333                         Instance->chanlist->erase(n);
 334                 }
 335         }
 336
 337         return NULL;
 338 }
 339
 340 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 341 {
 342         userrec* dummyuser = new userrec(Instance);
 343         std::string nick = user->nick;
 344         bool silent = false;
 345
 346         dummyuser->SetFd(FD_MAGIC_NUMBER);
 347         Ptr->AddUser(user);
 348
 349         /* Just in case they have no permissions */
 350         user->chans[Ptr] = 0;
 351
 352         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 353         {
 354                 const char status = *x;
 355                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 356                 if (mh)
 357                 {
 358                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 359                         /* Make sure that the mode handler knows this mode was now set */
 360                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 361
 362                         switch (mh->GetPrefix())
 363                         {
 364                                 /* These logic ops are SAFE IN THIS CASE
 365                                  * because if the entry doesnt exist,
 366                                  * addressing operator[] creates it.
 367                                  * If they do exist, it points to it.
 368                                  * At all other times where we dont want
 369                                  * to create an item if it doesnt exist, we
 370                                  * must stick to ::find().
 371                                  */
 372                                 case '@':
 373                                         user->chans[Ptr] |= UCMODE_OP;
 374                                 break;
 375                                 case '%':
 376                                         user->chans[Ptr] |= UCMODE_HOP;
 377                                 break;
 378                                 case '+':
 379                                         user->chans[Ptr] |= UCMODE_VOICE;
 380                                 break;
 381                         }
 382                 }
 383         }
 384
 385         delete dummyuser;
 386
 387         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user, Ptr, silent));
 388
 389         if (!silent)
 390                 Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 391
 392         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 393         std::string ms = Instance->Modes->ModeString(user, Ptr);
 394         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 395                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 396
 397         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 398         if (IS_LOCAL(user))
 399         {
 400                 if (Ptr->topicset)
 401                 {
 402                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 403                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 404                 }
 405                 Ptr->UserList(user);
 406         }
 407         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user, Ptr));
 408         return Ptr;
 409 }
 410
 411 bool chanrec::IsBanned(userrec* user)
 412 {
 413         char mask[MAXBUF];
 414         int MOD_RESULT = 0;
 415         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 416         if (!MOD_RESULT)
 417         {
 418                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 419                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 420                 {
 421                         /* This allows CIDR ban matching
 422                          *
 423                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 424                          */
 425                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 426                         {
 427                                 return true;
 428                         }
 429                 }
 430         }
 431         return false;
 432 }
 433
 434 /* chanrec::PartUser
 435  * remove a channel from a users record, and return the number of users left.
 436  * Therefore, if this function returns 0 the caller should delete the chanrec.
 437  */
 438 long chanrec::PartUser(userrec *user, const char* reason)
 439 {
 440         bool silent = false;
 441
 442         if (!user)
 443                 return this->GetUserCounter();
 444
 445         UCListIter i = user->chans.find(this);
 446         if (i != user->chans.end())
 447         {
 448                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : "", silent));
 449
 450                 if (!silent)
 451                         this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 452
 453                 user->chans.erase(i);
 454                 this->RemoveAllPrefixes(user);
 455         }
 456
 457         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 458         {
 459                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 460                 /* kill the record */
 461                 if (iter != ServerInstance->chanlist->end())
 462                 {
 463                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 464                         ServerInstance->chanlist->erase(iter);
 465                 }
 466                 return 0;
 467         }
 468
 469         return this->GetUserCounter();
 470 }
 471
 472 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 473 {
 474         bool silent = false;
 475
 476         if (!user || !reason)
 477                 return this->GetUserCounter();
 478
 479         if (IS_LOCAL(user))
 480         {
 481                 if (!this->HasUser(user))
 482                 {
 483                         /* Not on channel */
 484                         return this->GetUserCounter();
 485                 }
 486         }
 487
 488         if (triggerevents)
 489         {
 490                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL, user, this, reason, silent));
 491         }
 492
 493         UCListIter i = user->chans.find(this);
 494         if (i != user->chans.end())
 495         {
 496                 if (!silent)
 497                         this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 498
 499                 user->chans.erase(i);
 500                 this->RemoveAllPrefixes(user);
 501         }
 502
 503         if (!this->DelUser(user))
 504         {
 505                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 506                 /* kill the record */
 507                 if (iter != ServerInstance->chanlist->end())
 508                 {
 509                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 510                         ServerInstance->chanlist->erase(iter);
 511                 }
 512                 return 0;
 513         }
 514
 515         return this->GetUserCounter();
 516 }
 517
 518 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 519 {
 520         bool silent = false;
 521
 522         if (!src || !user || !reason)
 523                 return this->GetUserCounter();
 524
 525         if (IS_LOCAL(src))
 526         {
 527                 if (!this->HasUser(user))
 528                 {
 529                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 530                         return this->GetUserCounter();
 531                 }
 532                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 533                 {
 534                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 535                         return this->GetUserCounter();
 536                 }
 537                 int MOD_RESULT = 0;
 538
 539                 if (!ServerInstance->ULine(src->server))
 540                 {
 541                         MOD_RESULT = 0;
 542                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 543                         if (MOD_RESULT == 1)
 544                                 return this->GetUserCounter();
 545                 }
 546                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 547                 if (MOD_RESULT != -1)
 548                 {
 549                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 550                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 551                                 return this->GetUserCounter();
 552
 553                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 554                         {
 555                                 int them = this->GetStatus(src);
 556                                 int us = this->GetStatus(user);
 557                                 if ((them < STATUS_HOP) || (them < us))
 558                                 {
 559                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 560                                         return this->GetUserCounter();
 561                                 }
 562                         }
 563                 }
 564         }
 565
 566         FOREACH_MOD(I_OnUserKick,OnUserKick(src, user, this, reason, silent));
 567
 568         UCListIter i = user->chans.find(this);
 569         if (i != user->chans.end())
 570         {
 571                 /* zap it from the channel list of the user */
 572                 if (!silent)
 573                         this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 574
 575                 user->chans.erase(i);
 576                 this->RemoveAllPrefixes(user);
 577         }
 578
 579         if (!this->DelUser(user))
 580         /* if there are no users left on the channel */
 581         {
 582                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 583
 584                 /* kill the record */
 585                 if (iter != ServerInstance->chanlist->end())
 586                 {
 587                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 588                         ServerInstance->chanlist->erase(iter);
 589                 }
 590                 return 0;
 591         }
 592
 593         return this->GetUserCounter();
 594 }
 595
 596 void chanrec::WriteChannel(userrec* user, char* text, ...)
 597 {
 598         char textbuffer[MAXBUF];
 599         va_list argsPtr;
 600
 601         if (!user || !text)
 602                 return;
 603
 604         va_start(argsPtr, text);
 605         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 606         va_end(argsPtr);
 607
 608         this->WriteChannel(user, std::string(textbuffer));
 609 }
 610
 611 void chanrec::WriteChannel(userrec* user, const std::string &text)
 612 {
 613         CUList *ulist = this->GetUsers();
 614         char tb[MAXBUF];
 615
 616         if (!user)
 617                 return;
 618
 619         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 620         std::string out = tb;
 621
 622         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 623         {
 624                 if (IS_LOCAL(i->second))
 625                         i->second->Write(out);
 626         }
 627 }
 628
 629 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 630 {
 631         char textbuffer[MAXBUF];
 632         va_list argsPtr;
 633
 634         if (!text)
 635                 return;
 636
 637         va_start(argsPtr, text);
 638         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 639         va_end(argsPtr);
 640
 641         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 642 }
 643
 644 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 645 {
 646         CUList *ulist = this->GetUsers();
 647         char tb[MAXBUF];
 648
 649         snprintf(tb,MAXBUF,":%s %s",ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
 650         std::string out = tb;
 651
 652         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 653         {
 654                 if (IS_LOCAL(i->second))
 655                         i->second->Write(out);
 656         }
 657 }
 658
 659 /* write formatted text from a source user to all users on a channel except
 660  * for the sender (for privmsg etc) */
 661 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 662 {
 663         char textbuffer[MAXBUF];
 664         va_list argsPtr;
 665
 666         if (!text)
 667                 return;
 668
 669         va_start(argsPtr, text);
 670         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 671         va_end(argsPtr);
 672
 673         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 674 }
 675
 676 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 677 {
 678         char textbuffer[MAXBUF];
 679         va_list argsPtr;
 680
 681         if (!text)
 682                 return;
 683
 684         va_start(argsPtr, text);
 685         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 686         va_end(argsPtr);
 687
 688         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 689 }
 690
 691 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 692 {
 693         CUList *ulist;
 694         char tb[MAXBUF];
 695
 696         switch (status)
 697         {
 698                 case '@':
 699                         ulist = this->GetOppedUsers();
 700                         break;
 701                 case '%':
 702                         ulist = this->GetHalfoppedUsers();
 703                         break;
 704                 case '+':
 705                         ulist = this->GetVoicedUsers();
 706                         break;
 707                 default:
 708                         ulist = this->GetUsers();
 709                         break;
 710         }
 711
 712         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 713         std::string out = tb;
 714
 715         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 716         {
 717                 if ((IS_LOCAL(i->second)) && (except_list.find(i->second) == except_list.end()))
 718                 {
 719                         if (serversource)
 720                                 i->second->WriteServ(text);
 721                         else
 722                                 i->second->Write(out);
 723                 }
 724         }
 725 }
 726
 727 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 728 {
 729         CUList except_list;
 730         except_list[user] = user;
 731         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 732 }
 733
 734 /*
 735  * return a count of the users on a specific channel accounting for
 736  * invisible users who won't increase the count. e.g. for /LIST
 737  */
 738 int chanrec::CountInvisible()
 739 {
 740         int count = 0;
 741         CUList *ulist= this->GetUsers();
 742         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 743         {
 744                 if (!(i->second->modes[UM_INVISIBLE]))
 745                         count++;
 746         }
 747
 748         return count;
 749 }
 750
 751 char* chanrec::ChanModes(bool showkey)
 752 {
 753         static char scratch[MAXBUF];
 754         static char sparam[MAXBUF];
 755         char* offset = scratch;
 756         std::string extparam;
 757
 758         *scratch = '\0';
 759         *sparam = '\0';
 760
 761         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 762         for(int n = 0; n < 64; n++)
 763         {
 764                 if(this->modes[n])
 765                 {
 766                         *offset++ = n + 65;
 767                         extparam = "";
 768                         switch (n)
 769                         {
 770                                 case CM_KEY:
 771                                         extparam = (showkey ? this->key : "<key>");
 772                                 break;
 773                                 case CM_LIMIT:
 774                                         extparam = ConvToStr(this->limit);
 775                                 break;
 776                                 case CM_NOEXTERNAL:
 777                                 case CM_TOPICLOCK:
 778                                 case CM_INVITEONLY:
 779                                 case CM_MODERATED:
 780                                 case CM_SECRET:
 781                                 case CM_PRIVATE:
 782                                         /* We know these have no parameters */
 783                                 break;
 784                                 default:
 785                                         extparam = this->GetModeParameter(n + 65);
 786                                 break;
 787                         }
 788                         if (extparam != "")
 789                         {
 790                                 charlcat(sparam,' ',MAXBUF);
 791                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 792                         }
 793                 }
 794         }
 795
 796         /* Null terminate scratch */
 797         *offset = '\0';
 798         strlcat(scratch,sparam,MAXBUF);
 799         return scratch;
 800 }
 801
 802 /* compile a userlist of a channel into a string, each nick seperated by
 803  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 804  */
 805 void chanrec::UserList(userrec *user)
 806 {
 807         char list[MAXBUF];
 808         size_t dlen, curlen;
 809         int MOD_RESULT = 0;
 810
 811         if (!IS_LOCAL(user))
 812                 return;
 813
 814         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 815         if (MOD_RESULT == 1)
 816                 return;
 817
 818         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 819
 820         int numusers = 0;
 821         char* ptr = list + dlen;
 822
 823         CUList *ulist= this->GetUsers();
 824
 825         /* Improvement by Brain - this doesnt change in value, so why was it inside
 826          * the loop?
 827          */
 828         bool has_user = this->HasUser(user);
 829
 830         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 831         {
 832                 if ((!has_user) && (i->second->modes[UM_INVISIBLE]))
 833                 {
 834                         /*
 835                          * user is +i, and source not on the channel, does not show
 836                          * nick in NAMES list
 837                          */
 838                         continue;
 839                 }
 840
 841                 if (i->second->Visibility && !i->second->Visibility->VisibleTo(user))
 842                         continue;
 843
 844                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 845
 846                 curlen += ptrlen;
 847                 ptr += ptrlen;
 848
 849                 numusers++;
 850
 851                 if (curlen > (480-NICKMAX))
 852                 {
 853                         /* list overflowed into multiple numerics */
 854                         user->WriteServ(std::string(list));
 855
 856                         /* reset our lengths */
 857                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 858                         ptr = list + dlen;
 859
 860                         ptrlen = 0;
 861                         numusers = 0;
 862                 }
 863         }
 864
 865         /* if whats left in the list isnt empty, send it */
 866         if (numusers)
 867         {
 868                 user->WriteServ(std::string(list));
 869         }
 870
 871         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 872 }
 873
 874 long chanrec::GetMaxBans()
 875 {
 876         /* Return the cached value if there is one */
 877         if (this->maxbans)
 878                 return this->maxbans;
 879
 880         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 881         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 882         {
 883                 if (match(this->name,n->first.c_str()))
 884                 {
 885                         this->maxbans = n->second;
 886                         return n->second;
 887                 }
 888         }
 889
 890         /* Screw it, just return the default of 64 */
 891         this->maxbans = 64;
 892         return this->maxbans;
 893 }
 894
 895 void chanrec::ResetMaxBans()
 896 {
 897         this->maxbans = 0;
 898 }
 899
 900 /* returns the status character for a given user on a channel, e.g. @ for op,
 901  * % for halfop etc. If the user has several modes set, the highest mode
 902  * the user has must be returned.
 903  */
 904 const char* chanrec::GetPrefixChar(userrec *user)
 905 {
 906         static char pf[2] = {0, 0};
 907
 908         prefixlist::iterator n = prefixes.find(user);
 909         if (n != prefixes.end())
 910         {
 911                 if (n->second.size())
 912                 {
 913                         /* If the user has any prefixes, their highest prefix
 914                          * will always be at the head of the list, as the list is
 915                          * sorted in rank order highest first (see SetPrefix()
 916                          * for reasons why)
 917                          */
 918                         *pf = n->second.begin()->first;
 919                         return pf;
 920                 }
 921         }
 922
 923         *pf = 0;
 924         return pf;
 925 }
 926
 927 const char* chanrec::GetAllPrefixChars(userrec* user)
 928 {
 929         static char prefix[MAXBUF];
 930         int ctr = 0;
 931         *prefix = 0;
 932
 933         prefixlist::iterator n = prefixes.find(user);
 934         if (n != prefixes.end())
 935         {
 936                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 937                 {
 938                         prefix[ctr++] = x->first;
 939                 }
 940         }
 941
 942         prefix[ctr] = 0;
 943
 944         return prefix;
 945 }
 946
 947 unsigned int chanrec::GetPrefixValue(userrec* user)
 948 {
 949         prefixlist::iterator n = prefixes.find(user);
 950         if (n != prefixes.end())
 951         {
 952                 if (n->second.size())
 953                         return n->second.begin()->second;
 954         }
 955         return 0;
 956 }
 957
 958 int chanrec::GetStatusFlags(userrec *user)
 959 {
 960         UCListIter i = user->chans.find(this);
 961         if (i != user->chans.end())
 962         {
 963                 return i->second;
 964         }
 965         return 0;
 966 }
 967
 968 int chanrec::GetStatus(userrec *user)
 969 {
 970         if (ServerInstance->ULine(user->server))
 971                 return STATUS_OP;
 972
 973         UCListIter i = user->chans.find(this);
 974         if (i != user->chans.end())
 975         {
 976                 if ((i->second & UCMODE_OP) > 0)
 977                 {
 978                         return STATUS_OP;
 979                 }
 980                 if ((i->second & UCMODE_HOP) > 0)
 981                 {
 982                         return STATUS_HOP;
 983                 }
 984                 if ((i->second & UCMODE_VOICE) > 0)
 985                 {
 986                         return STATUS_VOICE;
 987                 }
 988                 return STATUS_NORMAL;
 989         }
 990         return STATUS_NORMAL;
 991 }
 992
 993 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
 994 {
 995         prefixlist::iterator n = prefixes.find(user);
 996         prefixtype pfx = std::make_pair(prefix,prefix_value);
 997         if (adding)
 998         {
 999                 if (n != prefixes.end())
1000                 {
1001                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1002                         {
1003                                 n->second.push_back(pfx);
1004                                 /* We must keep prefixes in rank order, largest first.
1005                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1006                                  * state, and secondly it turns out to be a benefit to us later.
1007                                  * See above in GetPrefix().
1008                                  */
1009                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1010                         }
1011                 }
1012                 else
1013                 {
1014                         pfxcontainer one;
1015                         one.push_back(pfx);
1016                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1017                 }
1018         }
1019         else
1020         {
1021                 if (n != prefixes.end())
1022                 {
1023                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1024                         if (x != n->second.end())
1025                                 n->second.erase(x);
1026                 }
1027         }
1028 }
1029
1030 void chanrec::RemoveAllPrefixes(userrec* user)
1031 {
1032         prefixlist::iterator n = prefixes.find(user);
1033         if (n != prefixes.end())
1034         {
1035                 prefixes.erase(n);
1036         }
1037 }
1038