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         ServerInstance->Log(DEBUG,"SetModeParam called");
  41
  42         CustomModeList::iterator n = custom_mode_params.find(mode);
  43
  44         if (mode_on)
  45         {
  46                 if (n == custom_mode_params.end())
  47                 {
  48                         custom_mode_params[mode] = strdup(parameter);
  49                         ServerInstance->Log(DEBUG,"Custom mode parameter %c %s added",mode,parameter);
  50                 }
  51                 else
  52                 {
  53                         ServerInstance->Log(DEBUG, "Tried to set custom mode parameter for %c '%s' when it was already '%s'", mode, parameter, n->second);
  54                 }
  55         }
  56         else
  57         {
  58                 if (n != custom_mode_params.end())
  59                 {
  60                         free(n->second);
  61                         custom_mode_params.erase(n);
  62                 }
  63         }
  64 }
  65
  66 bool chanrec::IsModeSet(char mode)
  67 {
  68         return modes[mode-65];
  69 }
  70
  71 std::string chanrec::GetModeParameter(char mode)
  72 {
  73         if (mode == 'k')
  74         {
  75                 return this->key;
  76         }
  77         else if (mode == 'l')
  78         {
  79                 return ConvToStr(this->limit);
  80         }
  81         else
  82         {
  83                 CustomModeList::iterator n = custom_mode_params.find(mode);
  84                 if (n != custom_mode_params.end())
  85                 {
  86                         return n->second;
  87                 }
  88                 return "";
  89         }
  90 }
  91
  92 long chanrec::GetUserCounter()
  93 {
  94         return (this->internal_userlist.size());
  95 }
  96
  97 void chanrec::AddUser(userrec* user)
  98 {
  99         internal_userlist[user] = user;
 100 }
 101
 102 unsigned long chanrec::DelUser(userrec* user)
 103 {
 104         CUListIter a = internal_userlist.find(user);
 105
 106         if (a != internal_userlist.end())
 107         {
 108                 internal_userlist.erase(a);
 109                 /* And tidy any others... */
 110                 DelOppedUser(user);
 111                 DelHalfoppedUser(user);
 112                 DelVoicedUser(user);
 113         }
 114
 115         return internal_userlist.size();
 116 }
 117
 118 bool chanrec::HasUser(userrec* user)
 119 {
 120         return (internal_userlist.find(user) != internal_userlist.end());
 121 }
 122
 123 void chanrec::AddOppedUser(userrec* user)
 124 {
 125         internal_op_userlist[user] = user;
 126 }
 127
 128 void chanrec::DelOppedUser(userrec* user)
 129 {
 130         CUListIter a = internal_op_userlist.find(user);
 131         if (a != internal_op_userlist.end())
 132         {
 133                 internal_op_userlist.erase(a);
 134                 return;
 135         }
 136 }
 137
 138 void chanrec::AddHalfoppedUser(userrec* user)
 139 {
 140         internal_halfop_userlist[user] = user;
 141 }
 142
 143 void chanrec::DelHalfoppedUser(userrec* user)
 144 {
 145         CUListIter a = internal_halfop_userlist.find(user);
 146
 147         if (a != internal_halfop_userlist.end())
 148         {
 149                 internal_halfop_userlist.erase(a);
 150         }
 151 }
 152
 153 void chanrec::AddVoicedUser(userrec* user)
 154 {
 155         internal_voice_userlist[user] = user;
 156 }
 157
 158 void chanrec::DelVoicedUser(userrec* user)
 159 {
 160         CUListIter a = internal_voice_userlist.find(user);
 161
 162         if (a != internal_voice_userlist.end())
 163         {
 164                 internal_voice_userlist.erase(a);
 165         }
 166 }
 167
 168 CUList* chanrec::GetUsers()
 169 {
 170         return &internal_userlist;
 171 }
 172
 173 CUList* chanrec::GetOppedUsers()
 174 {
 175         return &internal_op_userlist;
 176 }
 177
 178 CUList* chanrec::GetHalfoppedUsers()
 179 {
 180         return &internal_halfop_userlist;
 181 }
 182
 183 CUList* chanrec::GetVoicedUsers()
 184 {
 185         return &internal_voice_userlist;
 186 }
 187
 188 /*
 189  * add a channel to a user, creating the record for it if needed and linking
 190  * it to the user record
 191  */
 192 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key)
 193 {
 194         if (!user || !cn)
 195                 return NULL;
 196
 197         bool new_channel = false;
 198         char cname[MAXBUF];
 199         int MOD_RESULT = 0;
 200         strlcpy(cname,cn,CHANMAX);
 201
 202         std::string privs;
 203
 204         chanrec* Ptr = Instance->FindChan(cname);
 205
 206         if (!Ptr)
 207         {
 208                 privs = "@";
 209
 210                 if (IS_LOCAL(user) && override == false)
 211                 {
 212                         MOD_RESULT = 0;
 213                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 214                         if (MOD_RESULT == 1)
 215                                 return NULL;
 216                 }
 217
 218                 /* create a new one */
 219                 Ptr = new chanrec(Instance);
 220                 (*(Instance->chanlist))[cname] = Ptr;
 221
 222                 strlcpy(Ptr->name, cname,CHANMAX);
 223
 224                 /* As spotted by jilles, dont bother to set this on remote users */
 225                 if (IS_LOCAL(user))
 226                         Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 227
 228                 Ptr->created = Instance->Time();
 229                 *Ptr->topic = 0;
 230                 *Ptr->setby = 0;
 231                 Ptr->topicset = 0;
 232                 Instance->Log(DEBUG,"chanrec::JoinUser(): created: %s",cname);
 233                 new_channel = true;
 234         }
 235         else
 236         {
 237                 /* Already on the channel */
 238                 if (Ptr->HasUser(user))
 239                         return NULL;
 240
 241                 /*
 242                  * remote users are allowed us to bypass channel modes
 243                  * and bans (used by servers)
 244                  */
 245                 if (IS_LOCAL(user) && override == false)
 246                 {
 247                         MOD_RESULT = 0;
 248                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 249                         if (MOD_RESULT == 1)
 250                         {
 251                                 return NULL;
 252                         }
 253                         else if (MOD_RESULT == 0)
 254                         {
 255                                 if (*Ptr->key)
 256                                 {
 257                                         MOD_RESULT = 0;
 258                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 259                                         if (!MOD_RESULT)
 260                                         {
 261                                                 if ((!key) || strcmp(key,Ptr->key))
 262                                                 {
 263                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 264                                                         return NULL;
 265                                                 }
 266                                         }
 267                                 }
 268                                 if (Ptr->modes[CM_INVITEONLY])
 269                                 {
 270                                         MOD_RESULT = 0;
 271                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 272                                         if (!MOD_RESULT)
 273                                         {
 274                                                 if (user->IsInvited(Ptr->name))
 275                                                 {
 276                                                         /* user was invited to channel */
 277                                                         /* there may be an optional channel NOTICE here */
 278                                                 }
 279                                                 else
 280                                                 {
 281                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 282                                                         return NULL;
 283                                                 }
 284                                         }
 285                                         user->RemoveInvite(Ptr->name);
 286                                 }
 287                                 if (Ptr->limit)
 288                                 {
 289                                         MOD_RESULT = 0;
 290                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 291                                         if (!MOD_RESULT)
 292                                         {
 293                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 294                                                 {
 295                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 296                                                         return NULL;
 297                                                 }
 298                                         }
 299                                 }
 300                                 if (Ptr->bans.size())
 301                                 {
 302                                         if (Ptr->IsBanned(user))
 303                                         {
 304                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 305                                                 return NULL;
 306                                         }
 307                                 }
 308                         }
 309                 }
 310                 else
 311                 {
 312                         Instance->Log(DEBUG,"chanrec::JoinUser(): Overridden checks");
 313                 }
 314         }
 315
 316         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 317          * OPERMAXCHANS. For remote users which are not bound by the channel limits,
 318          * we can extend infinitely. Otherwise, nope, youre restricted to MAXCHANS.
 319          */
 320         if (!IS_LOCAL(user) || override == true) /* was a check on fd < 0 */
 321         {
 322                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 323         }
 324         else if (*user->oper)
 325         {
 326                 /* Oper allows extension up to the OPERMAXCHANS value */
 327                 if (user->chans.size() < OPERMAXCHANS)
 328                 {
 329                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 330                 }
 331         }
 332         else if (user->chans.size() < MAXCHANS)
 333         {
 334                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 335         }
 336
 337
 338         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 339
 340         if (new_channel)
 341         {
 342                 Instance->Log(DEBUG,"BLAMMO, Whacking channel.");
 343                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 344                 chan_hash::iterator n = Instance->chanlist->find(cname);
 345                 if (n != Instance->chanlist->end())
 346                 {
 347                         Ptr->DelUser(user);
 348                         DELETE(Ptr);
 349                         Instance->chanlist->erase(n);
 350                 }
 351         }
 352
 353         return NULL;
 354 }
 355
 356 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 357 {
 358         userrec* dummyuser = new userrec(Instance);
 359         std::string nick = user->nick;
 360
 361         dummyuser->SetFd(FD_MAGIC_NUMBER);
 362         Ptr->AddUser(user);
 363
 364         /* Just in case they have no permissions */
 365         user->chans[Ptr] = 0;
 366
 367         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 368         {
 369                 const char status = *x;
 370                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 371                 if (mh)
 372                 {
 373                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 374                         /* Make sure that the mode handler knows this mode was now set */
 375                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 376
 377                         switch (mh->GetPrefix())
 378                         {
 379                                 /* These logic ops are SAFE IN THIS CASE
 380                                  * because if the entry doesnt exist,
 381                                  * addressing operator[] creates it.
 382                                  * If they do exist, it points to it.
 383                                  * At all other times where we dont want
 384                                  * to create an item if it doesnt exist, we
 385                                  * must stick to ::find().
 386                                  */
 387                                 case '@':
 388                                         user->chans[Ptr] |= UCMODE_OP;
 389                                 break;
 390                                 case '%':
 391                                         user->chans[Ptr] |= UCMODE_HOP;
 392                                 break;
 393                                 case '+':
 394                                         user->chans[Ptr] |= UCMODE_VOICE;
 395                                 break;
 396                         }
 397                 }
 398         }
 399
 400         delete dummyuser;
 401
 402         Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 403
 404         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 405         std::string ms = Instance->Modes->ModeString(user, Ptr);
 406         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 407                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 408
 409         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 410         if (IS_LOCAL(user))
 411         {
 412                 if (Ptr->topicset)
 413                 {
 414                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 415                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 416                 }
 417                 Ptr->UserList(user);
 418         }
 419         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr));
 420         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user,Ptr));
 421         return Ptr;
 422 }
 423
 424 bool chanrec::IsBanned(userrec* user)
 425 {
 426         char mask[MAXBUF];
 427         int MOD_RESULT = 0;
 428         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 429         if (!MOD_RESULT)
 430         {
 431                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 432                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 433                 {
 434                         /* This allows CIDR ban matching
 435                          *
 436                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 437                          */
 438                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 439                         {
 440                                 return true;
 441                         }
 442                 }
 443         }
 444         return false;
 445 }
 446
 447 /* chanrec::PartUser
 448  * remove a channel from a users record, and return the number of users left.
 449  * Therefore, if this function returns 0 the caller should delete the chanrec.
 450  */
 451 long chanrec::PartUser(userrec *user, const char* reason)
 452 {
 453         if (!user)
 454                 return this->GetUserCounter();
 455
 456         UCListIter i = user->chans.find(this);
 457         if (i != user->chans.end())
 458         {
 459                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : ""));
 460                 this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 461                 user->chans.erase(i);
 462                 this->RemoveAllPrefixes(user);
 463         }
 464
 465         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 466         {
 467                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 468                 /* kill the record */
 469                 if (iter != ServerInstance->chanlist->end())
 470                 {
 471                         ServerInstance->Log(DEBUG,"del_channel: destroyed: %s", this->name);
 472                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 473                         ServerInstance->chanlist->erase(iter);
 474                 }
 475                 return 0;
 476         }
 477
 478         return this->GetUserCounter();
 479 }
 480
 481 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 482 {
 483         if (!user || !reason)
 484                 return this->GetUserCounter();
 485
 486         if (IS_LOCAL(user))
 487         {
 488                 if (!this->HasUser(user))
 489                 {
 490                         /* Not on channel */
 491                         return this->GetUserCounter();
 492                 }
 493         }
 494
 495         if (triggerevents)
 496         {
 497                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason));
 498         }
 499
 500         UCListIter i = user->chans.find(this);
 501         if (i != user->chans.end())
 502         {
 503                 this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 504                 user->chans.erase(i);
 505                 this->RemoveAllPrefixes(user);
 506         }
 507
 508         if (!this->DelUser(user))
 509         {
 510                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 511                 /* kill the record */
 512                 if (iter != ServerInstance->chanlist->end())
 513                 {
 514                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 515                         ServerInstance->chanlist->erase(iter);
 516                 }
 517                 return 0;
 518         }
 519
 520         return this->GetUserCounter();
 521 }
 522
 523 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 524 {
 525         if (!src || !user || !reason)
 526                 return this->GetUserCounter();
 527
 528         if (IS_LOCAL(src))
 529         {
 530                 if (!this->HasUser(user))
 531                 {
 532                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 533                         return this->GetUserCounter();
 534                 }
 535                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 536                 {
 537                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 538                         return this->GetUserCounter();
 539                 }
 540                 int MOD_RESULT = 0;
 541
 542                 if (!ServerInstance->ULine(src->server))
 543                 {
 544                         MOD_RESULT = 0;
 545                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 546                         if (MOD_RESULT == 1)
 547                                 return this->GetUserCounter();
 548                 }
 549                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 550                 if (MOD_RESULT != -1)
 551                 {
 552                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 553                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 554                                 return this->GetUserCounter();
 555
 556                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 557                         {
 558                                 int them = this->GetStatus(src);
 559                                 int us = this->GetStatus(user);
 560                                 if ((them < STATUS_HOP) || (them < us))
 561                                 {
 562                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 563                                         return this->GetUserCounter();
 564                                 }
 565                         }
 566                 }
 567         }
 568
 569         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason));
 570
 571         UCListIter i = user->chans.find(this);
 572         if (i != user->chans.end())
 573         {
 574                 /* zap it from the channel list of the user */
 575                 this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 576                 user->chans.erase(i);
 577                 this->RemoveAllPrefixes(user);
 578         }
 579
 580         if (!this->DelUser(user))
 581         /* if there are no users left on the channel */
 582         {
 583                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 584
 585                 /* kill the record */
 586                 if (iter != ServerInstance->chanlist->end())
 587                 {
 588                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 589                         ServerInstance->chanlist->erase(iter);
 590                 }
 591                 return 0;
 592         }
 593
 594         return this->GetUserCounter();
 595 }
 596
 597 void chanrec::WriteChannel(userrec* user, char* text, ...)
 598 {
 599         char textbuffer[MAXBUF];
 600         va_list argsPtr;
 601
 602         if (!user || !text)
 603                 return;
 604
 605         va_start(argsPtr, text);
 606         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 607         va_end(argsPtr);
 608
 609         this->WriteChannel(user, std::string(textbuffer));
 610 }
 611
 612 void chanrec::WriteChannel(userrec* user, const std::string &text)
 613 {
 614         CUList *ulist = this->GetUsers();
 615         char tb[MAXBUF];
 616
 617         if (!user)
 618                 return;
 619
 620         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 621         std::string out = tb;
 622
 623         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 624         {
 625                 if (IS_LOCAL(i->second))
 626                         i->second->Write(out);
 627         }
 628 }
 629
 630 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 631 {
 632         char textbuffer[MAXBUF];
 633         va_list argsPtr;
 634
 635         if (!text)
 636                 return;
 637
 638         va_start(argsPtr, text);
 639         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 640         va_end(argsPtr);
 641
 642         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 643 }
 644
 645 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 646 {
 647         CUList *ulist = this->GetUsers();
 648
 649         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 650         {
 651                 if (IS_LOCAL(i->second))
 652                         i->second->WriteServ(text);
 653         }
 654 }
 655
 656 /* write formatted text from a source user to all users on a channel except
 657  * for the sender (for privmsg etc) */
 658 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 659 {
 660         char textbuffer[MAXBUF];
 661         va_list argsPtr;
 662
 663         if (!text)
 664                 return;
 665
 666         va_start(argsPtr, text);
 667         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 668         va_end(argsPtr);
 669
 670         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 671 }
 672
 673 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 674 {
 675         char textbuffer[MAXBUF];
 676         va_list argsPtr;
 677
 678         if (!text)
 679                 return;
 680
 681         va_start(argsPtr, text);
 682         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 683         va_end(argsPtr);
 684
 685         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 686 }
 687
 688 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 689 {
 690         CUList *ulist;
 691         char tb[MAXBUF];
 692
 693         switch (status)
 694         {
 695                 case '@':
 696                         ulist = this->GetOppedUsers();
 697                         break;
 698                 case '%':
 699                         ulist = this->GetHalfoppedUsers();
 700                         break;
 701                 case '+':
 702                         ulist = this->GetVoicedUsers();
 703                         break;
 704                 default:
 705                         ulist = this->GetUsers();
 706                         break;
 707         }
 708
 709         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 710         std::string out = tb;
 711
 712         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 713         {
 714                 if ((IS_LOCAL(i->second)) && (except_list.find(i->second) == except_list.end()))
 715                 {
 716                         if (serversource)
 717                                 i->second->WriteServ(text);
 718                         else
 719                                 i->second->Write(out);
 720                 }
 721         }
 722 }
 723
 724 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 725 {
 726         CUList except_list;
 727         except_list[user] = user;
 728         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 729 }
 730
 731 /*
 732  * return a count of the users on a specific channel accounting for
 733  * invisible users who won't increase the count. e.g. for /LIST
 734  */
 735 int chanrec::CountInvisible()
 736 {
 737         int count = 0;
 738         CUList *ulist= this->GetUsers();
 739         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 740         {
 741                 if (!(i->second->modes[UM_INVISIBLE]))
 742                         count++;
 743         }
 744
 745         return count;
 746 }
 747
 748 char* chanrec::ChanModes(bool showkey)
 749 {
 750         static char scratch[MAXBUF];
 751         static char sparam[MAXBUF];
 752         char* offset = scratch;
 753         std::string extparam = "";
 754
 755         *scratch = '\0';
 756         *sparam = '\0';
 757
 758         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 759         for(int n = 0; n < 64; n++)
 760         {
 761                 if(this->modes[n])
 762                 {
 763                         *offset++ = n + 65;
 764                         extparam = "";
 765                         switch (n)
 766                         {
 767                                 case CM_KEY:
 768                                         extparam = (showkey ? this->key : "<key>");
 769                                 break;
 770                                 case CM_LIMIT:
 771                                         extparam = ConvToStr(this->limit);
 772                                 break;
 773                                 case CM_NOEXTERNAL:
 774                                 case CM_TOPICLOCK:
 775                                 case CM_INVITEONLY:
 776                                 case CM_MODERATED:
 777                                 case CM_SECRET:
 778                                 case CM_PRIVATE:
 779                                         /* We know these have no parameters */
 780                                 break;
 781                                 default:
 782                                         extparam = this->GetModeParameter(n + 65);
 783                                 break;
 784                         }
 785                         if (extparam != "")
 786                         {
 787                                 charlcat(sparam,' ',MAXBUF);
 788                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 789                         }
 790                 }
 791         }
 792
 793         /* Null terminate scratch */
 794         *offset = '\0';
 795         strlcat(scratch,sparam,MAXBUF);
 796         return scratch;
 797 }
 798
 799 /* compile a userlist of a channel into a string, each nick seperated by
 800  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 801  */
 802 void chanrec::UserList(userrec *user)
 803 {
 804         char list[MAXBUF];
 805         size_t dlen, curlen;
 806         int MOD_RESULT = 0;
 807
 808         if (!IS_LOCAL(user))
 809                 return;
 810
 811         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 812         ServerInstance->Log(DEBUG,"MOD_RESULT for UserList = %d",MOD_RESULT);
 813         if (MOD_RESULT == 1)
 814                 return;
 815
 816         ServerInstance->Log(DEBUG,"Using builtin NAMES list generation");
 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                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 842
 843                 curlen += ptrlen;
 844                 ptr += ptrlen;
 845
 846                 numusers++;
 847
 848                 if (curlen > (480-NICKMAX))
 849                 {
 850                         /* list overflowed into multiple numerics */
 851                         user->WriteServ(std::string(list));
 852
 853                         /* reset our lengths */
 854                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 855                         ptr = list + dlen;
 856
 857                         ptrlen = 0;
 858                         numusers = 0;
 859                 }
 860         }
 861
 862         /* if whats left in the list isnt empty, send it */
 863         if (numusers)
 864         {
 865                 user->WriteServ(std::string(list));
 866         }
 867
 868         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 869 }
 870
 871 long chanrec::GetMaxBans()
 872 {
 873         /* Return the cached value if there is one */
 874         if (this->maxbans)
 875                 return this->maxbans;
 876
 877         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 878         for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
 879         {
 880                 if (match(this->name,n->first.c_str()))
 881                 {
 882                         this->maxbans = n->second;
 883                         return n->second;
 884                 }
 885         }
 886
 887         /* Screw it, just return the default of 64 */
 888         this->maxbans = 64;
 889         return this->maxbans;
 890 }
 891
 892 void chanrec::ResetMaxBans()
 893 {
 894         this->maxbans = 0;
 895 }
 896
 897 /* returns the status character for a given user on a channel, e.g. @ for op,
 898  * % for halfop etc. If the user has several modes set, the highest mode
 899  * the user has must be returned.
 900  */
 901 const char* chanrec::GetPrefixChar(userrec *user)
 902 {
 903         static char pf[2] = {0, 0};
 904
 905         prefixlist::iterator n = prefixes.find(user);
 906         if (n != prefixes.end())
 907         {
 908                 if (n->second.size())
 909                 {
 910                         /* If the user has any prefixes, their highest prefix
 911                          * will always be at the head of the list, as the list is
 912                          * sorted in rank order highest first (see SetPrefix()
 913                          * for reasons why)
 914                          */
 915                         *pf = n->second.begin()->first;
 916                         return pf;
 917                 }
 918         }
 919
 920         *pf = 0;
 921         return pf;
 922 }
 923
 924 const char* chanrec::GetAllPrefixChars(userrec* user)
 925 {
 926         static char prefix[MAXBUF];
 927         int ctr = 0;
 928         *prefix = 0;
 929
 930         prefixlist::iterator n = prefixes.find(user);
 931         if (n != prefixes.end())
 932         {
 933                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 934                 {
 935                         prefix[ctr++] = x->first;
 936                 }
 937         }
 938
 939         prefix[ctr] = 0;
 940
 941         return prefix;
 942 }
 943
 944 unsigned int chanrec::GetPrefixValue(userrec* user)
 945 {
 946         prefixlist::iterator n = prefixes.find(user);
 947         if (n != prefixes.end())
 948         {
 949                 if (n->second.size())
 950                         return n->second.begin()->second;
 951         }
 952         return 0;
 953 }
 954
 955 int chanrec::GetStatusFlags(userrec *user)
 956 {
 957         UCListIter i = user->chans.find(this);
 958         if (i != user->chans.end())
 959         {
 960                 return i->second;
 961         }
 962         return 0;
 963 }
 964
 965 int chanrec::GetStatus(userrec *user)
 966 {
 967         if (ServerInstance->ULine(user->server))
 968                 return STATUS_OP;
 969
 970         UCListIter i = user->chans.find(this);
 971         if (i != user->chans.end())
 972         {
 973                 if ((i->second & UCMODE_OP) > 0)
 974                 {
 975                         return STATUS_OP;
 976                 }
 977                 if ((i->second & UCMODE_HOP) > 0)
 978                 {
 979                         return STATUS_HOP;
 980                 }
 981                 if ((i->second & UCMODE_VOICE) > 0)
 982                 {
 983                         return STATUS_VOICE;
 984                 }
 985                 return STATUS_NORMAL;
 986         }
 987         return STATUS_NORMAL;
 988 }
 989
 990 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
 991 {
 992         ServerInstance->Log(DEBUG,"Setting prefix: %c on user %s in %s to %d", prefix, user->nick, this->name, adding);
 993         prefixlist::iterator n = prefixes.find(user);
 994         prefixtype pfx = std::make_pair(prefix,prefix_value);
 995         if (adding)
 996         {
 997                 if (n != prefixes.end())
 998                 {
 999                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
1000                         {
1001                                 n->second.push_back(pfx);
1002                                 /* We must keep prefixes in rank order, largest first.
1003                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1004                                  * state, and secondly it turns out to be a benefit to us later.
1005                                  * See above in GetPrefix().
1006                                  */
1007                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1008                         }
1009                 }
1010                 else
1011                 {
1012                         pfxcontainer one;
1013                         one.push_back(pfx);
1014                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1015                 }
1016         }
1017         else
1018         {
1019                 if (n != prefixes.end())
1020                 {
1021                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1022                         if (x != n->second.end())
1023                                 n->second.erase(x);
1024                 }
1025         }
1026         ServerInstance->Log(DEBUG,"Added prefix %c to %s for %s, prefixlist size is now %d", prefix, this->name, user->nick, prefixes.size());
1027 }
1028
1029 void chanrec::RemoveAllPrefixes(userrec* user)
1030 {
1031         prefixlist::iterator n = prefixes.find(user);
1032         if (n != prefixes.end())
1033         {
1034                 ServerInstance->Log(DEBUG,"Removed prefixes from %s for %s, prefixlist size is now %d", this->name, user->nick, prefixes.size());
1035                 prefixes.erase(n);
1036         }
1037 }
1038