src/channels.cpp

   1 /*   +------------------------------------+
   2  *   | Inspire Internet Relay Chat Daemon |
   3  *   +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *   E-mail:
   7  *        <brain@chatspike.net>
   8  *        <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *      the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include <stdarg.h>
  20 #include "configreader.h"
  21 #include "inspircd.h"
  22 #include "users.h"
  23 #include "modules.h"
  24 #include "wildcard.h"
  25 #include "mode.h"
  26
  27 chanrec::chanrec(InspIRCd* Instance) : ServerInstance(Instance)
  28 {
  29         *name = *topic = *setby = *key = 0;
  30         created = topicset = limit = 0;
  31         internal_userlist.clear();
  32         memset(&modes,0,64);
  33         age = ServerInstance->Time(true);
  34 }
  35
  36 void chanrec::SetMode(char mode,bool mode_on)
  37 {
  38         modes[mode-65] = mode_on;
  39         if (!mode_on)
  40                 this->SetModeParam(mode,"",false);
  41 }
  42
  43
  44 void chanrec::SetModeParam(char mode,const char* parameter,bool mode_on)
  45 {
  46         ServerInstance->Log(DEBUG,"SetModeParam called");
  47
  48         CustomModeList::iterator n = custom_mode_params.find(mode);
  49
  50         if (mode_on)
  51         {
  52                 if (n == custom_mode_params.end())
  53                 {
  54                         custom_mode_params[mode] = strdup(parameter);
  55                         ServerInstance->Log(DEBUG,"Custom mode parameter %c %s added",mode,parameter);
  56                 }
  57                 else
  58                 {
  59                         ServerInstance->Log(DEBUG, "Tried to set custom mode parameter for %c '%s' when it was already '%s'", mode, parameter, n->second);
  60                 }
  61         }
  62         else
  63         {
  64                 if (n != custom_mode_params.end())
  65                 {
  66                         free(n->second);
  67                         custom_mode_params.erase(n);
  68                 }
  69         }
  70 }
  71
  72 bool chanrec::IsModeSet(char mode)
  73 {
  74         return modes[mode-65];
  75 }
  76
  77 std::string chanrec::GetModeParameter(char mode)
  78 {
  79         if (mode == 'k')
  80         {
  81                 return this->key;
  82         }
  83         else if (mode == 'l')
  84         {
  85                 return ConvToStr(this->limit);
  86         }
  87         else
  88         {
  89                 CustomModeList::iterator n = custom_mode_params.find(mode);
  90                 if (n != custom_mode_params.end())
  91                 {
  92                         return n->second;
  93                 }
  94                 return "";
  95         }
  96 }
  97
  98 long chanrec::GetUserCounter()
  99 {
 100         return (this->internal_userlist.size());
 101 }
 102
 103 void chanrec::AddUser(userrec* user)
 104 {
 105         internal_userlist[user] = user;
 106 }
 107
 108 unsigned long chanrec::DelUser(userrec* user)
 109 {
 110         CUListIter a = internal_userlist.find(user);
 111
 112         if (a != internal_userlist.end())
 113         {
 114                 internal_userlist.erase(a);
 115                 /* And tidy any others... */
 116                 DelOppedUser(user);
 117                 DelHalfoppedUser(user);
 118                 DelVoicedUser(user);
 119         }
 120
 121         return internal_userlist.size();
 122 }
 123
 124 bool chanrec::HasUser(userrec* user)
 125 {
 126         return (internal_userlist.find(user) != internal_userlist.end());
 127 }
 128
 129 void chanrec::AddOppedUser(userrec* user)
 130 {
 131         internal_op_userlist[user] = user;
 132 }
 133
 134 void chanrec::DelOppedUser(userrec* user)
 135 {
 136         CUListIter a = internal_op_userlist.find(user);
 137         if (a != internal_op_userlist.end())
 138         {
 139                 internal_op_userlist.erase(a);
 140                 return;
 141         }
 142 }
 143
 144 void chanrec::AddHalfoppedUser(userrec* user)
 145 {
 146         internal_halfop_userlist[user] = user;
 147 }
 148
 149 void chanrec::DelHalfoppedUser(userrec* user)
 150 {
 151         CUListIter a = internal_halfop_userlist.find(user);
 152
 153         if (a != internal_halfop_userlist.end())
 154         {
 155                 internal_halfop_userlist.erase(a);
 156         }
 157 }
 158
 159 void chanrec::AddVoicedUser(userrec* user)
 160 {
 161         internal_voice_userlist[user] = user;
 162 }
 163
 164 void chanrec::DelVoicedUser(userrec* user)
 165 {
 166         CUListIter a = internal_voice_userlist.find(user);
 167
 168         if (a != internal_voice_userlist.end())
 169         {
 170                 internal_voice_userlist.erase(a);
 171         }
 172 }
 173
 174 CUList* chanrec::GetUsers()
 175 {
 176         return &internal_userlist;
 177 }
 178
 179 CUList* chanrec::GetOppedUsers()
 180 {
 181         return &internal_op_userlist;
 182 }
 183
 184 CUList* chanrec::GetHalfoppedUsers()
 185 {
 186         return &internal_halfop_userlist;
 187 }
 188
 189 CUList* chanrec::GetVoicedUsers()
 190 {
 191         return &internal_voice_userlist;
 192 }
 193
 194 /*
 195  * add a channel to a user, creating the record for it if needed and linking
 196  * it to the user record
 197  */
 198 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key)
 199 {
 200         if (!user || !cn)
 201                 return NULL;
 202
 203         bool new_channel = false;
 204         char cname[MAXBUF];
 205         int MOD_RESULT = 0;
 206         strlcpy(cname,cn,CHANMAX);
 207
 208         std::string privs;
 209
 210         chanrec* Ptr = Instance->FindChan(cname);
 211
 212         if (!Ptr)
 213         {
 214                 privs = "@";
 215
 216                 if (IS_LOCAL(user) && override == false)
 217                 {
 218                         MOD_RESULT = 0;
 219                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 220                         if (MOD_RESULT == 1)
 221                                 return NULL;
 222                 }
 223
 224                 /* create a new one */
 225                 Ptr = new chanrec(Instance);
 226                 Instance->chanlist[cname] = Ptr;
 227
 228                 strlcpy(Ptr->name, cname,CHANMAX);
 229
 230                 /* As spotted by jilles, dont bother to set this on remote users */
 231                 if (IS_LOCAL(user))
 232                         Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 233
 234                 Ptr->created = Instance->Time();
 235                 *Ptr->topic = 0;
 236                 *Ptr->setby = 0;
 237                 Ptr->topicset = 0;
 238                 Instance->Log(DEBUG,"chanrec::JoinUser(): created: %s",cname);
 239                 new_channel = true;
 240         }
 241         else
 242         {
 243                 /* Already on the channel */
 244                 if (Ptr->HasUser(user))
 245                         return NULL;
 246
 247                 /*
 248                  * remote users are allowed us to bypass channel modes
 249                  * and bans (used by servers)
 250                  */
 251                 if (IS_LOCAL(user) && override == false)
 252                 {
 253                         MOD_RESULT = 0;
 254                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 255                         if (MOD_RESULT == 1)
 256                         {
 257                                 return NULL;
 258                         }
 259                         else if (MOD_RESULT == 0)
 260                         {
 261                                 if (*Ptr->key)
 262                                 {
 263                                         MOD_RESULT = 0;
 264                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 265                                         if (!MOD_RESULT)
 266                                         {
 267                                                 if ((!key) || strcmp(key,Ptr->key))
 268                                                 {
 269                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 270                                                         return NULL;
 271                                                 }
 272                                         }
 273                                 }
 274                                 if (Ptr->modes[CM_INVITEONLY])
 275                                 {
 276                                         MOD_RESULT = 0;
 277                                         irc::string xname(Ptr->name);
 278                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 279                                         if (!MOD_RESULT)
 280                                         {
 281                                                 if (user->IsInvited(xname))
 282                                                 {
 283                                                         /* user was invited to channel */
 284                                                         /* there may be an optional channel NOTICE here */
 285                                                 }
 286                                                 else
 287                                                 {
 288                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 289                                                         return NULL;
 290                                                 }
 291                                         }
 292                                         user->RemoveInvite(xname);
 293                                 }
 294                                 if (Ptr->limit)
 295                                 {
 296                                         MOD_RESULT = 0;
 297                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 298                                         if (!MOD_RESULT)
 299                                         {
 300                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 301                                                 {
 302                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 303                                                         return NULL;
 304                                                 }
 305                                         }
 306                                 }
 307                                 if (Ptr->bans.size())
 308                                 {
 309                                         if (Ptr->IsBanned(user))
 310                                         {
 311                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 312                                                 return NULL;
 313                                         }
 314                                 }
 315                         }
 316                 }
 317                 else
 318                 {
 319                         Instance->Log(DEBUG,"chanrec::JoinUser(): Overridden checks");
 320                 }
 321         }
 322
 323         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 324          * OPERMAXCHANS. For remote users which are not bound by the channel limits,
 325          * we can extend infinitely. Otherwise, nope, youre restricted to MAXCHANS.
 326          */
 327         if (!IS_LOCAL(user) || override == true) /* was a check on fd < 0 */
 328         {
 329                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 330         }
 331         else if (*user->oper)
 332         {
 333                 /* Oper allows extension up to the OPERMAXCHANS value */
 334                 if (user->chans.size() < OPERMAXCHANS)
 335                 {
 336                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 337                 }
 338         }
 339         else if (user->chans.size() < MAXCHANS)
 340         {
 341                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 342         }
 343
 344
 345         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 346
 347         if (new_channel)
 348         {
 349                 Instance->Log(DEBUG,"BLAMMO, Whacking channel.");
 350                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 351                 chan_hash::iterator n = Instance->chanlist.find(cname);
 352                 if (n != Instance->chanlist.end())
 353                 {
 354                         Ptr->DelUser(user);
 355                         DELETE(Ptr);
 356                         Instance->chanlist.erase(n);
 357                 }
 358         }
 359
 360         return NULL;
 361 }
 362
 363 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 364 {
 365         userrec* dummyuser = new userrec(Instance);
 366         std::string nick = user->nick;
 367
 368         dummyuser->SetFd(FD_MAGIC_NUMBER);
 369         Ptr->AddUser(user);
 370         user->ModChannelCount(1);
 371
 372         /* Just in case they have no permissions */
 373         user->chans[Ptr] = 0;
 374
 375         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 376         {
 377                 const char status = *x;
 378                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 379                 if (mh)
 380                 {
 381                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 382                         /* Make sure that the mode handler knows this mode was now set */
 383                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 384
 385                         switch (mh->GetPrefix())
 386                         {
 387                                 /* These logic ops are SAFE IN THIS CASE
 388                                  * because if the entry doesnt exist,
 389                                  * addressing operator[] creates it.
 390                                  * If they do exist, it points to it.
 391                                  * At all other times where we dont want
 392                                  * to create an item if it doesnt exist, we
 393                                  * must stick to ::find().
 394                                  */
 395                                 case '@':
 396                                         user->chans[Ptr] |= STATUS_OP;
 397                                 break;
 398                                 case '%':
 399                                         user->chans[Ptr] |= STATUS_HOP;
 400                                 break;
 401                                 case '+':
 402                                         user->chans[Ptr] |= STATUS_VOICE;
 403                                 break;
 404                         }
 405                 }
 406         }
 407
 408         delete dummyuser;
 409
 410         Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 411
 412         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 413         std::string ms = Instance->Modes->ModeString(user, Ptr);
 414         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 415                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 416
 417         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 418         if (IS_LOCAL(user))
 419         {
 420                 if (Ptr->topicset)
 421                 {
 422                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 423                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 424                 }
 425                 Ptr->UserList(user);
 426         }
 427         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr));
 428         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user,Ptr));
 429         return Ptr;
 430 }
 431
 432 bool chanrec::IsBanned(userrec* user)
 433 {
 434         char mask[MAXBUF];
 435         int MOD_RESULT = 0;
 436         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 437         if (!MOD_RESULT)
 438         {
 439                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 440                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 441                 {
 442                         /* This allows CIDR ban matching
 443                          *
 444                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 445                          */
 446                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 447                         {
 448                                 return true;
 449                         }
 450                 }
 451         }
 452         return false;
 453 }
 454
 455 /* chanrec::PartUser
 456  * remove a channel from a users record, and return the number of users left.
 457  * Therefore, if this function returns 0 the caller should delete the chanrec.
 458  */
 459 long chanrec::PartUser(userrec *user, const char* reason)
 460 {
 461         if (!user)
 462                 return this->GetUserCounter();
 463
 464         UCListIter i = user->chans.find(this);
 465         if (i != user->chans.end())
 466         {
 467                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : ""));
 468                 this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 469                 user->chans.erase(i);
 470                 user->ModChannelCount(-1);
 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                         ServerInstance->Log(DEBUG,"del_channel: destroyed: %s", this->name);
 481                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 482                         ServerInstance->chanlist.erase(iter);
 483                 }
 484                 return 0;
 485         }
 486
 487         return this->GetUserCounter();
 488 }
 489
 490 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 491 {
 492         if (!user || !reason)
 493                 return this->GetUserCounter();
 494
 495         if (IS_LOCAL(user))
 496         {
 497                 if (!this->HasUser(user))
 498                 {
 499                         /* Not on channel */
 500                         return this->GetUserCounter();
 501                 }
 502         }
 503
 504         if (triggerevents)
 505         {
 506                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason));
 507         }
 508
 509         UCListIter i = user->chans.find(this);
 510         if (i != user->chans.end())
 511         {
 512                 this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 513                 user->chans.erase(i);
 514                 this->RemoveAllPrefixes(user);
 515         }
 516
 517         if (!this->DelUser(user))
 518         {
 519                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 520                 /* kill the record */
 521                 if (iter != ServerInstance->chanlist.end())
 522                 {
 523                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 524                         ServerInstance->chanlist.erase(iter);
 525                 }
 526                 return 0;
 527         }
 528
 529         return this->GetUserCounter();
 530 }
 531
 532 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 533 {
 534         if (!src || !user || !reason)
 535                 return this->GetUserCounter();
 536
 537         if (IS_LOCAL(src))
 538         {
 539                 if (!this->HasUser(user))
 540                 {
 541                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 542                         return this->GetUserCounter();
 543                 }
 544                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 545                 {
 546                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 547                         return this->GetUserCounter();
 548                 }
 549                 int MOD_RESULT = 0;
 550
 551                 if (!ServerInstance->ULine(src->server))
 552                 {
 553                         MOD_RESULT = 0;
 554                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 555                         if (MOD_RESULT == 1)
 556                                 return this->GetUserCounter();
 557                 }
 558                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 559                 if (MOD_RESULT != -1)
 560                 {
 561                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 562                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 563                                 return this->GetUserCounter();
 564
 565                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 566                         {
 567                                 int them = this->GetStatus(src);
 568                                 int us = this->GetStatus(user);
 569                                 if ((them < STATUS_HOP) || (them < us))
 570                                 {
 571                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 572                                         return this->GetUserCounter();
 573                                 }
 574                         }
 575                 }
 576         }
 577
 578         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason));
 579
 580         UCListIter i = user->chans.find(this);
 581         if (i != user->chans.end())
 582         {
 583                 /* zap it from the channel list of the user */
 584                 this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 585                 user->chans.erase(i);
 586                 this->RemoveAllPrefixes(user);
 587         }
 588
 589         if (!this->DelUser(user))
 590         /* if there are no users left on the channel */
 591         {
 592                 chan_hash::iterator iter = ServerInstance->chanlist.find(this->name);
 593
 594                 /* kill the record */
 595                 if (iter != ServerInstance->chanlist.end())
 596                 {
 597                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 598                         ServerInstance->chanlist.erase(iter);
 599                 }
 600                 return 0;
 601         }
 602
 603         return this->GetUserCounter();
 604 }
 605
 606 void chanrec::WriteChannel(userrec* user, char* text, ...)
 607 {
 608         char textbuffer[MAXBUF];
 609         va_list argsPtr;
 610
 611         if (!user || !text)
 612                 return;
 613
 614         va_start(argsPtr, text);
 615         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 616         va_end(argsPtr);
 617
 618         this->WriteChannel(user, std::string(textbuffer));
 619 }
 620
 621 void chanrec::WriteChannel(userrec* user, const std::string &text)
 622 {
 623         CUList *ulist = this->GetUsers();
 624
 625         if (!user)
 626                 return;
 627
 628         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 629         {
 630                 if (IS_LOCAL(i->second))
 631                         user->WriteTo(i->second,text);
 632         }
 633 }
 634
 635 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 636 {
 637         char textbuffer[MAXBUF];
 638         va_list argsPtr;
 639
 640         if (!text)
 641                 return;
 642
 643         va_start(argsPtr, text);
 644         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 645         va_end(argsPtr);
 646
 647         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 648 }
 649
 650 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 651 {
 652         CUList *ulist = this->GetUsers();
 653
 654         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 655         {
 656                 if (IS_LOCAL(i->second))
 657                         i->second->WriteServ(text);
 658         }
 659 }
 660
 661 /* write formatted text from a source user to all users on a channel except
 662  * for the sender (for privmsg etc) */
 663 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 664 {
 665         char textbuffer[MAXBUF];
 666         va_list argsPtr;
 667
 668         if (!text)
 669                 return;
 670
 671         va_start(argsPtr, text);
 672         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 673         va_end(argsPtr);
 674
 675         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 676 }
 677
 678 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, 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->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 691 }
 692
 693 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 694 {
 695         CUList *ulist;
 696
 697         switch (status)
 698         {
 699                 case '@':
 700                         ulist = this->GetOppedUsers();
 701                         break;
 702                 case '%':
 703                         ulist = this->GetHalfoppedUsers();
 704                         break;
 705                 case '+':
 706                         ulist = this->GetVoicedUsers();
 707                         break;
 708                 default:
 709                         ulist = this->GetUsers();
 710                         break;
 711         }
 712
 713         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 714         {
 715                 if ((IS_LOCAL(i->second)) && (except_list.find(i->second) == except_list.end()))
 716                 {
 717                         if (serversource)
 718                                 i->second->WriteServ(text);
 719                         else
 720                                 i->second->WriteFrom(user,text);
 721                 }
 722         }
 723 }
 724
 725 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 726 {
 727         CUList except_list;
 728         except_list[user] = user;
 729         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 730 }
 731
 732 /*
 733  * return a count of the users on a specific channel accounting for
 734  * invisible users who won't increase the count. e.g. for /LIST
 735  */
 736 int chanrec::CountInvisible()
 737 {
 738         int count = 0;
 739         CUList *ulist= this->GetUsers();
 740         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 741         {
 742                 if (!(i->second->modes[UM_INVISIBLE]))
 743                         count++;
 744         }
 745
 746         return count;
 747 }
 748
 749 char* chanrec::ChanModes(bool showkey)
 750 {
 751         static char scratch[MAXBUF];
 752         static char sparam[MAXBUF];
 753         char* offset = scratch;
 754         std::string extparam = "";
 755
 756         *scratch = '\0';
 757         *sparam = '\0';
 758
 759         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 760         for(int n = 0; n < 64; n++)
 761         {
 762                 if(this->modes[n])
 763                 {
 764                         *offset++ = n + 65;
 765                         extparam = "";
 766                         switch (n)
 767                         {
 768                                 case CM_KEY:
 769                                         extparam = (showkey ? this->key : "<key>");
 770                                 break;
 771                                 case CM_LIMIT:
 772                                         extparam = ConvToStr(this->limit);
 773                                 break;
 774                                 case CM_NOEXTERNAL:
 775                                 case CM_TOPICLOCK:
 776                                 case CM_INVITEONLY:
 777                                 case CM_MODERATED:
 778                                 case CM_SECRET:
 779                                 case CM_PRIVATE:
 780                                         /* We know these have no parameters */
 781                                 break;
 782                                 default:
 783                                         extparam = this->GetModeParameter(n + 65);
 784                                 break;
 785                         }
 786                         if (extparam != "")
 787                         {
 788                                 charlcat(sparam,' ',MAXBUF);
 789                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 790                         }
 791                 }
 792         }
 793
 794         /* Null terminate scratch */
 795         *offset = '\0';
 796         strlcat(scratch,sparam,MAXBUF);
 797         return scratch;
 798 }
 799
 800 /* compile a userlist of a channel into a string, each nick seperated by
 801  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 802  */
 803 void chanrec::UserList(userrec *user)
 804 {
 805         char list[MAXBUF];
 806         size_t dlen, curlen;
 807         int MOD_RESULT = 0;
 808
 809         if (!IS_LOCAL(user))
 810                 return;
 811
 812         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 813         ServerInstance->Log(DEBUG,"MOD_RESULT for UserList = %d",MOD_RESULT);
 814         if (MOD_RESULT == 1)
 815                 return;
 816
 817         ServerInstance->Log(DEBUG,"Using builtin NAMES list generation");
 818
 819         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 820
 821         int numusers = 0;
 822         char* ptr = list + dlen;
 823
 824         CUList *ulist= this->GetUsers();
 825
 826         /* Improvement by Brain - this doesnt change in value, so why was it inside
 827          * the loop?
 828          */
 829         bool has_user = this->HasUser(user);
 830
 831         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 832         {
 833                 if ((!has_user) && (i->second->modes[UM_INVISIBLE]))
 834                 {
 835                         /*
 836                          * user is +i, and source not on the channel, does not show
 837                          * nick in NAMES list
 838                          */
 839                         continue;
 840                 }
 841
 842                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 843
 844                 curlen += ptrlen;
 845                 ptr += ptrlen;
 846
 847                 numusers++;
 848
 849                 if (curlen > (480-NICKMAX))
 850                 {
 851                         /* list overflowed into multiple numerics */
 852                         user->WriteServ(std::string(list));
 853
 854                         /* reset our lengths */
 855                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 856                         ptr = list + dlen;
 857
 858                         ptrlen = 0;
 859                         numusers = 0;
 860                 }
 861         }
 862
 863         /* if whats left in the list isnt empty, send it */
 864         if (numusers)
 865         {
 866                 user->WriteServ(std::string(list));
 867         }
 868
 869         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 870 }
 871
 872 long chanrec::GetMaxBans()
 873 {
 874         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 875         {
 876                 if (match(this->name,n->first.c_str()))
 877                 {
 878                         return n->second;
 879                 }
 880         }
 881         return 64;
 882 }
 883
 884
 885 /* returns the status character for a given user on a channel, e.g. @ for op,
 886  * % for halfop etc. If the user has several modes set, the highest mode
 887  * the user has must be returned.
 888  */
 889 const char* chanrec::GetPrefixChar(userrec *user)
 890 {
 891         static char pf[2] = {0, 0};
 892
 893         prefixlist::iterator n = prefixes.find(user);
 894         if (n != prefixes.end())
 895         {
 896                 if (n->second.size())
 897                 {
 898                         /* If the user has any prefixes, their highest prefix
 899                          * will always be at the head of the list, as the list is
 900                          * sorted in rank order highest first (see SetPrefix()
 901                          * for reasons why)
 902                          */
 903                         *pf = n->second.begin()->first;
 904                         return pf;
 905                 }
 906         }
 907
 908         *pf = 0;
 909         return pf;
 910 }
 911
 912 const char* chanrec::GetAllPrefixChars(userrec* user)
 913 {
 914         static char prefix[MAXBUF];
 915         int ctr = 0;
 916         *prefix = 0;
 917
 918         prefixlist::iterator n = prefixes.find(user);
 919         if (n != prefixes.end())
 920         {
 921                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 922                 {
 923                         prefix[ctr++] = x->first;
 924                 }
 925         }
 926
 927         prefix[ctr] = 0;
 928
 929         return prefix;
 930 }
 931
 932 unsigned int chanrec::GetPrefixValue(userrec* user)
 933 {
 934         prefixlist::iterator n = prefixes.find(user);
 935         if (n != prefixes.end())
 936         {
 937                 if (n->second.size())
 938                         return n->second.begin()->second;
 939         }
 940         return 0;
 941 }
 942
 943 int chanrec::GetStatusFlags(userrec *user)
 944 {
 945         UCListIter i = user->chans.find(this);
 946         if (i != user->chans.end())
 947         {
 948                 return i->second;
 949         }
 950         return 0;
 951 }
 952
 953 int chanrec::GetStatus(userrec *user)
 954 {
 955         if (ServerInstance->ULine(user->server))
 956                 return STATUS_OP;
 957
 958         UCListIter i = user->chans.find(this);
 959         if (i != user->chans.end())
 960         {
 961                 if ((i->second & UCMODE_OP) > 0)
 962                 {
 963                         return STATUS_OP;
 964                 }
 965                 if ((i->second & UCMODE_HOP) > 0)
 966                 {
 967                         return STATUS_HOP;
 968                 }
 969                 if ((i->second & UCMODE_VOICE) > 0)
 970                 {
 971                         return STATUS_VOICE;
 972                 }
 973                 return STATUS_NORMAL;
 974         }
 975         return STATUS_NORMAL;
 976 }
 977
 978 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
 979 {
 980         prefixlist::iterator n = prefixes.find(user);
 981         prefixtype pfx = std::make_pair(prefix,prefix_value);
 982         if (adding)
 983         {
 984                 if (n != prefixes.end())
 985                 {
 986                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
 987                         {
 988                                 n->second.push_back(pfx);
 989                                 /* We must keep prefixes in rank order, largest first.
 990                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
 991                                  * state, and secondly it turns out to be a benefit to us later.
 992                                  * See above in GetPrefix().
 993                                  */
 994                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
 995                         }
 996                 }
 997                 else
 998                 {
 999                         pfxcontainer one;
1000                         one.push_back(pfx);
1001                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1002                 }
1003         }
1004         else
1005         {
1006                 if (n != prefixes.end())
1007                 {
1008                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1009                         if (x != n->second.end())
1010                                 n->second.erase(x);
1011                 }
1012         }
1013         ServerInstance->Log(DEBUG,"Added prefix %c to %s for %s, prefixlist size is now %d", prefix, this->name, user->nick, prefixes.size());
1014 }
1015
1016 void chanrec::RemoveAllPrefixes(userrec* user)
1017 {
1018         prefixlist::iterator n = prefixes.find(user);
1019         if (n != prefixes.end())
1020         {
1021                 ServerInstance->Log(DEBUG,"Removed prefixes from %s for %s, prefixlist size is now %d", this->name, user->nick, prefixes.size());
1022                 prefixes.erase(n);
1023         }
1024 }
1025