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         switch (mode)
  74         {
  75                 case 'k':
  76                         return this->key;
  77                 case 'l':
  78                         return ConvToStr(this->limit);
  79                 default:
  80                         CustomModeList::iterator n = custom_mode_params.find(mode);
  81                         if (n != custom_mode_params.end())
  82                                 return n->second;
  83                         return "";
  84                 break;
  85         }
  86 }
  87
  88 long chanrec::GetUserCounter()
  89 {
  90         return (this->internal_userlist.size());
  91 }
  92
  93 void chanrec::AddUser(userrec* user)
  94 {
  95         internal_userlist[user] = user;
  96 }
  97
  98 unsigned long chanrec::DelUser(userrec* user)
  99 {
 100         CUListIter a = internal_userlist.find(user);
 101
 102         if (a != internal_userlist.end())
 103         {
 104                 internal_userlist.erase(a);
 105                 /* And tidy any others... */
 106                 DelOppedUser(user);
 107                 DelHalfoppedUser(user);
 108                 DelVoicedUser(user);
 109         }
 110
 111         return internal_userlist.size();
 112 }
 113
 114 bool chanrec::HasUser(userrec* user)
 115 {
 116         return (internal_userlist.find(user) != internal_userlist.end());
 117 }
 118
 119 void chanrec::AddOppedUser(userrec* user)
 120 {
 121         internal_op_userlist[user] = user;
 122 }
 123
 124 void chanrec::DelOppedUser(userrec* user)
 125 {
 126         CUListIter a = internal_op_userlist.find(user);
 127         if (a != internal_op_userlist.end())
 128         {
 129                 internal_op_userlist.erase(a);
 130                 return;
 131         }
 132 }
 133
 134 void chanrec::AddHalfoppedUser(userrec* user)
 135 {
 136         internal_halfop_userlist[user] = user;
 137 }
 138
 139 void chanrec::DelHalfoppedUser(userrec* user)
 140 {
 141         CUListIter a = internal_halfop_userlist.find(user);
 142
 143         if (a != internal_halfop_userlist.end())
 144         {
 145                 internal_halfop_userlist.erase(a);
 146         }
 147 }
 148
 149 void chanrec::AddVoicedUser(userrec* user)
 150 {
 151         internal_voice_userlist[user] = user;
 152 }
 153
 154 void chanrec::DelVoicedUser(userrec* user)
 155 {
 156         CUListIter a = internal_voice_userlist.find(user);
 157
 158         if (a != internal_voice_userlist.end())
 159         {
 160                 internal_voice_userlist.erase(a);
 161         }
 162 }
 163
 164 CUList* chanrec::GetUsers()
 165 {
 166         return &internal_userlist;
 167 }
 168
 169 CUList* chanrec::GetOppedUsers()
 170 {
 171         return &internal_op_userlist;
 172 }
 173
 174 CUList* chanrec::GetHalfoppedUsers()
 175 {
 176         return &internal_halfop_userlist;
 177 }
 178
 179 CUList* chanrec::GetVoicedUsers()
 180 {
 181         return &internal_voice_userlist;
 182 }
 183
 184 /*
 185  * add a channel to a user, creating the record for it if needed and linking
 186  * it to the user record
 187  */
 188 chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key)
 189 {
 190         if (!user || !cn)
 191                 return NULL;
 192
 193         bool new_channel = false;
 194         char cname[MAXBUF];
 195         int MOD_RESULT = 0;
 196         strlcpy(cname,cn,CHANMAX);
 197
 198         std::string privs;
 199
 200         chanrec* Ptr = Instance->FindChan(cname);
 201
 202         if (!Ptr)
 203         {
 204                 privs = "@";
 205
 206                 if (IS_LOCAL(user) && override == false)
 207                 {
 208                         MOD_RESULT = 0;
 209                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname,privs));
 210                         if (MOD_RESULT == 1)
 211                                 return NULL;
 212                 }
 213
 214                 /* create a new one */
 215                 Ptr = new chanrec(Instance);
 216                 (*(Instance->chanlist))[cname] = Ptr;
 217
 218                 strlcpy(Ptr->name, cname,CHANMAX);
 219
 220                 /* As spotted by jilles, dont bother to set this on remote users */
 221                 if (IS_LOCAL(user))
 222                         Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1;
 223
 224                 Ptr->created = Instance->Time();
 225                 *Ptr->topic = 0;
 226                 *Ptr->setby = 0;
 227                 Ptr->topicset = 0;
 228                 Instance->Log(DEBUG,"chanrec::JoinUser(): created: %s",cname);
 229                 new_channel = true;
 230         }
 231         else
 232         {
 233                 /* Already on the channel */
 234                 if (Ptr->HasUser(user))
 235                         return NULL;
 236
 237                 /*
 238                  * remote users are allowed us to bypass channel modes
 239                  * and bans (used by servers)
 240                  */
 241                 if (IS_LOCAL(user) && override == false)
 242                 {
 243                         MOD_RESULT = 0;
 244                         FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname,privs));
 245                         if (MOD_RESULT == 1)
 246                         {
 247                                 return NULL;
 248                         }
 249                         else if (MOD_RESULT == 0)
 250                         {
 251                                 if (*Ptr->key)
 252                                 {
 253                                         MOD_RESULT = 0;
 254                                         FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
 255                                         if (!MOD_RESULT)
 256                                         {
 257                                                 if ((!key) || strcmp(key,Ptr->key))
 258                                                 {
 259                                                         user->WriteServ("475 %s %s :Cannot join channel (Incorrect channel key)",user->nick, Ptr->name);
 260                                                         return NULL;
 261                                                 }
 262                                         }
 263                                 }
 264                                 if (Ptr->modes[CM_INVITEONLY])
 265                                 {
 266                                         MOD_RESULT = 0;
 267                                         FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr));
 268                                         if (!MOD_RESULT)
 269                                         {
 270                                                 if (user->IsInvited(Ptr->name))
 271                                                 {
 272                                                         /* user was invited to channel */
 273                                                         /* there may be an optional channel NOTICE here */
 274                                                 }
 275                                                 else
 276                                                 {
 277                                                         user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
 278                                                         return NULL;
 279                                                 }
 280                                         }
 281                                         user->RemoveInvite(Ptr->name);
 282                                 }
 283                                 if (Ptr->limit)
 284                                 {
 285                                         MOD_RESULT = 0;
 286                                         FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr));
 287                                         if (!MOD_RESULT)
 288                                         {
 289                                                 if (Ptr->GetUserCounter() >= Ptr->limit)
 290                                                 {
 291                                                         user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
 292                                                         return NULL;
 293                                                 }
 294                                         }
 295                                 }
 296                                 if (Ptr->bans.size())
 297                                 {
 298                                         if (Ptr->IsBanned(user))
 299                                         {
 300                                                 user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
 301                                                 return NULL;
 302                                         }
 303                                 }
 304                         }
 305                 }
 306                 else
 307                 {
 308                         Instance->Log(DEBUG,"chanrec::JoinUser(): Overridden checks");
 309                 }
 310         }
 311
 312         /* NOTE: If the user is an oper here, we can extend their user->chans by up to
 313          * OPERMAXCHANS. For remote users which are not bound by the channel limits,
 314          * we can extend infinitely. Otherwise, nope, youre restricted to MAXCHANS.
 315          */
 316         if (!IS_LOCAL(user) || override == true) /* was a check on fd < 0 */
 317         {
 318                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 319         }
 320         else if (*user->oper)
 321         {
 322                 /* Oper allows extension up to the OPERMAXCHANS value */
 323                 if (user->chans.size() < OPERMAXCHANS)
 324                 {
 325                         return chanrec::ForceChan(Instance, Ptr, user, privs);
 326                 }
 327         }
 328         else if (user->chans.size() < MAXCHANS)
 329         {
 330                 return chanrec::ForceChan(Instance, Ptr, user, privs);
 331         }
 332
 333
 334         user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname);
 335
 336         if (new_channel)
 337         {
 338                 Instance->Log(DEBUG,"BLAMMO, Whacking channel.");
 339                 /* Things went seriously pear shaped, so take this away. bwahaha. */
 340                 chan_hash::iterator n = Instance->chanlist->find(cname);
 341                 if (n != Instance->chanlist->end())
 342                 {
 343                         Ptr->DelUser(user);
 344                         DELETE(Ptr);
 345                         Instance->chanlist->erase(n);
 346                 }
 347         }
 348
 349         return NULL;
 350 }
 351
 352 chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr, userrec* user, const std::string &privs)
 353 {
 354         userrec* dummyuser = new userrec(Instance);
 355         std::string nick = user->nick;
 356
 357         dummyuser->SetFd(FD_MAGIC_NUMBER);
 358         Ptr->AddUser(user);
 359
 360         /* Just in case they have no permissions */
 361         user->chans[Ptr] = 0;
 362
 363         for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
 364         {
 365                 const char status = *x;
 366                 ModeHandler* mh = Instance->Modes->FindPrefix(status);
 367                 if (mh)
 368                 {
 369                         Ptr->SetPrefix(user, status, mh->GetPrefixRank(), true);
 370                         /* Make sure that the mode handler knows this mode was now set */
 371                         mh->OnModeChange(dummyuser, dummyuser, Ptr, nick, true);
 372
 373                         switch (mh->GetPrefix())
 374                         {
 375                                 /* These logic ops are SAFE IN THIS CASE
 376                                  * because if the entry doesnt exist,
 377                                  * addressing operator[] creates it.
 378                                  * If they do exist, it points to it.
 379                                  * At all other times where we dont want
 380                                  * to create an item if it doesnt exist, we
 381                                  * must stick to ::find().
 382                                  */
 383                                 case '@':
 384                                         user->chans[Ptr] |= UCMODE_OP;
 385                                 break;
 386                                 case '%':
 387                                         user->chans[Ptr] |= UCMODE_HOP;
 388                                 break;
 389                                 case '+':
 390                                         user->chans[Ptr] |= UCMODE_VOICE;
 391                                 break;
 392                         }
 393                 }
 394         }
 395
 396         delete dummyuser;
 397
 398         Ptr->WriteChannel(user,"JOIN :%s",Ptr->name);
 399
 400         /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
 401         std::string ms = Instance->Modes->ModeString(user, Ptr);
 402         if ((Ptr->GetUserCounter() > 1) && (ms.length()))
 403                 Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name, ms.c_str());
 404
 405         /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
 406         if (IS_LOCAL(user))
 407         {
 408                 if (Ptr->topicset)
 409                 {
 410                         user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
 411                         user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
 412                 }
 413                 Ptr->UserList(user);
 414         }
 415         FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr));
 416         FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(user,Ptr));
 417         return Ptr;
 418 }
 419
 420 bool chanrec::IsBanned(userrec* user)
 421 {
 422         char mask[MAXBUF];
 423         int MOD_RESULT = 0;
 424         FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, this));
 425         if (!MOD_RESULT)
 426         {
 427                 snprintf(mask, MAXBUF, "%s!%s@%s", user->nick, user->ident, user->GetIPString());
 428                 for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
 429                 {
 430                         /* This allows CIDR ban matching
 431                          *
 432                          *        Full masked host                      Full unmasked host                   IP with/without CIDR
 433                          */
 434                         if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true)))
 435                         {
 436                                 return true;
 437                         }
 438                 }
 439         }
 440         return false;
 441 }
 442
 443 /* chanrec::PartUser
 444  * remove a channel from a users record, and return the number of users left.
 445  * Therefore, if this function returns 0 the caller should delete the chanrec.
 446  */
 447 long chanrec::PartUser(userrec *user, const char* reason)
 448 {
 449         if (!user)
 450                 return this->GetUserCounter();
 451
 452         UCListIter i = user->chans.find(this);
 453         if (i != user->chans.end())
 454         {
 455                 FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason ? reason : ""));
 456                 this->WriteChannel(user, "PART %s%s%s", this->name, reason ? " :" : "", reason ? reason : "");
 457                 user->chans.erase(i);
 458                 this->RemoveAllPrefixes(user);
 459         }
 460
 461         if (!this->DelUser(user)) /* if there are no users left on the channel... */
 462         {
 463                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 464                 /* kill the record */
 465                 if (iter != ServerInstance->chanlist->end())
 466                 {
 467                         ServerInstance->Log(DEBUG,"del_channel: destroyed: %s", this->name);
 468                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 469                         ServerInstance->chanlist->erase(iter);
 470                 }
 471                 return 0;
 472         }
 473
 474         return this->GetUserCounter();
 475 }
 476
 477 long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents)
 478 {
 479         if (!user || !reason)
 480                 return this->GetUserCounter();
 481
 482         if (IS_LOCAL(user))
 483         {
 484                 if (!this->HasUser(user))
 485                 {
 486                         /* Not on channel */
 487                         return this->GetUserCounter();
 488                 }
 489         }
 490
 491         if (triggerevents)
 492         {
 493                 FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason));
 494         }
 495
 496         UCListIter i = user->chans.find(this);
 497         if (i != user->chans.end())
 498         {
 499                 this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason);
 500                 user->chans.erase(i);
 501                 this->RemoveAllPrefixes(user);
 502         }
 503
 504         if (!this->DelUser(user))
 505         {
 506                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 507                 /* kill the record */
 508                 if (iter != ServerInstance->chanlist->end())
 509                 {
 510                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 511                         ServerInstance->chanlist->erase(iter);
 512                 }
 513                 return 0;
 514         }
 515
 516         return this->GetUserCounter();
 517 }
 518
 519 long chanrec::KickUser(userrec *src, userrec *user, const char* reason)
 520 {
 521         if (!src || !user || !reason)
 522                 return this->GetUserCounter();
 523
 524         if (IS_LOCAL(src))
 525         {
 526                 if (!this->HasUser(user))
 527                 {
 528                         src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name);
 529                         return this->GetUserCounter();
 530                 }
 531                 if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
 532                 {
 533                         src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name);
 534                         return this->GetUserCounter();
 535                 }
 536                 int MOD_RESULT = 0;
 537
 538                 if (!ServerInstance->ULine(src->server))
 539                 {
 540                         MOD_RESULT = 0;
 541                         FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason));
 542                         if (MOD_RESULT == 1)
 543                                 return this->GetUserCounter();
 544                 }
 545                 /* Set to -1 by OnUserPreKick if explicit allow was set */
 546                 if (MOD_RESULT != -1)
 547                 {
 548                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK));
 549                         if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->ULine(src->server)))
 550                                 return this->GetUserCounter();
 551
 552                         if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->ULine(src->server)))
 553                         {
 554                                 int them = this->GetStatus(src);
 555                                 int us = this->GetStatus(user);
 556                                 if ((them < STATUS_HOP) || (them < us))
 557                                 {
 558                                         src->WriteServ("482 %s %s :You must be a channel %soperator",src->nick, this->name, them == STATUS_HOP ? "" : "half-");
 559                                         return this->GetUserCounter();
 560                                 }
 561                         }
 562                 }
 563         }
 564
 565         FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason));
 566
 567         UCListIter i = user->chans.find(this);
 568         if (i != user->chans.end())
 569         {
 570                 /* zap it from the channel list of the user */
 571                 this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason);
 572                 user->chans.erase(i);
 573                 this->RemoveAllPrefixes(user);
 574         }
 575
 576         if (!this->DelUser(user))
 577         /* if there are no users left on the channel */
 578         {
 579                 chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
 580
 581                 /* kill the record */
 582                 if (iter != ServerInstance->chanlist->end())
 583                 {
 584                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this));
 585                         ServerInstance->chanlist->erase(iter);
 586                 }
 587                 return 0;
 588         }
 589
 590         return this->GetUserCounter();
 591 }
 592
 593 void chanrec::WriteChannel(userrec* user, char* text, ...)
 594 {
 595         char textbuffer[MAXBUF];
 596         va_list argsPtr;
 597
 598         if (!user || !text)
 599                 return;
 600
 601         va_start(argsPtr, text);
 602         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 603         va_end(argsPtr);
 604
 605         this->WriteChannel(user, std::string(textbuffer));
 606 }
 607
 608 void chanrec::WriteChannel(userrec* user, const std::string &text)
 609 {
 610         CUList *ulist = this->GetUsers();
 611         char tb[MAXBUF];
 612
 613         if (!user)
 614                 return;
 615
 616         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 617         std::string out = tb;
 618
 619         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 620         {
 621                 if (IS_LOCAL(i->second))
 622                         i->second->Write(out);
 623         }
 624 }
 625
 626 void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...)
 627 {
 628         char textbuffer[MAXBUF];
 629         va_list argsPtr;
 630
 631         if (!text)
 632                 return;
 633
 634         va_start(argsPtr, text);
 635         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 636         va_end(argsPtr);
 637
 638         this->WriteChannelWithServ(ServName, std::string(textbuffer));
 639 }
 640
 641 void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text)
 642 {
 643         CUList *ulist = this->GetUsers();
 644
 645         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 646         {
 647                 if (IS_LOCAL(i->second))
 648                         i->second->WriteServ(text);
 649         }
 650 }
 651
 652 /* write formatted text from a source user to all users on a channel except
 653  * for the sender (for privmsg etc) */
 654 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, char* text, ...)
 655 {
 656         char textbuffer[MAXBUF];
 657         va_list argsPtr;
 658
 659         if (!text)
 660                 return;
 661
 662         va_start(argsPtr, text);
 663         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 664         va_end(argsPtr);
 665
 666         this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
 667 }
 668
 669 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, char* text, ...)
 670 {
 671         char textbuffer[MAXBUF];
 672         va_list argsPtr;
 673
 674         if (!text)
 675                 return;
 676
 677         va_start(argsPtr, text);
 678         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 679         va_end(argsPtr);
 680
 681         this->WriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
 682 }
 683
 684 void chanrec::WriteAllExcept(userrec* user, bool serversource, char status, CUList &except_list, const std::string &text)
 685 {
 686         CUList *ulist;
 687         char tb[MAXBUF];
 688
 689         switch (status)
 690         {
 691                 case '@':
 692                         ulist = this->GetOppedUsers();
 693                         break;
 694                 case '%':
 695                         ulist = this->GetHalfoppedUsers();
 696                         break;
 697                 case '+':
 698                         ulist = this->GetVoicedUsers();
 699                         break;
 700                 default:
 701                         ulist = this->GetUsers();
 702                         break;
 703         }
 704
 705         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
 706         std::string out = tb;
 707
 708         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 709         {
 710                 if ((IS_LOCAL(i->second)) && (except_list.find(i->second) == except_list.end()))
 711                 {
 712                         if (serversource)
 713                                 i->second->WriteServ(text);
 714                         else
 715                                 i->second->Write(out);
 716                 }
 717         }
 718 }
 719
 720 void chanrec::WriteAllExceptSender(userrec* user, bool serversource, char status, const std::string& text)
 721 {
 722         CUList except_list;
 723         except_list[user] = user;
 724         this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 725 }
 726
 727 /*
 728  * return a count of the users on a specific channel accounting for
 729  * invisible users who won't increase the count. e.g. for /LIST
 730  */
 731 int chanrec::CountInvisible()
 732 {
 733         int count = 0;
 734         CUList *ulist= this->GetUsers();
 735         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 736         {
 737                 if (!(i->second->modes[UM_INVISIBLE]))
 738                         count++;
 739         }
 740
 741         return count;
 742 }
 743
 744 char* chanrec::ChanModes(bool showkey)
 745 {
 746         static char scratch[MAXBUF];
 747         static char sparam[MAXBUF];
 748         char* offset = scratch;
 749         std::string extparam = "";
 750
 751         *scratch = '\0';
 752         *sparam = '\0';
 753
 754         /* This was still iterating up to 190, chanrec::modes is only 64 elements -- Om */
 755         for(int n = 0; n < 64; n++)
 756         {
 757                 if(this->modes[n])
 758                 {
 759                         *offset++ = n + 65;
 760                         extparam = "";
 761                         switch (n)
 762                         {
 763                                 case CM_KEY:
 764                                         extparam = (showkey ? this->key : "<key>");
 765                                 break;
 766                                 case CM_LIMIT:
 767                                         extparam = ConvToStr(this->limit);
 768                                 break;
 769                                 case CM_NOEXTERNAL:
 770                                 case CM_TOPICLOCK:
 771                                 case CM_INVITEONLY:
 772                                 case CM_MODERATED:
 773                                 case CM_SECRET:
 774                                 case CM_PRIVATE:
 775                                         /* We know these have no parameters */
 776                                 break;
 777                                 default:
 778                                         extparam = this->GetModeParameter(n + 65);
 779                                 break;
 780                         }
 781                         if (extparam != "")
 782                         {
 783                                 charlcat(sparam,' ',MAXBUF);
 784                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 785                         }
 786                 }
 787         }
 788
 789         /* Null terminate scratch */
 790         *offset = '\0';
 791         strlcat(scratch,sparam,MAXBUF);
 792         return scratch;
 793 }
 794
 795 /* compile a userlist of a channel into a string, each nick seperated by
 796  * spaces and op, voice etc status shown as @ and +, and send it to 'user'
 797  */
 798 void chanrec::UserList(userrec *user)
 799 {
 800         char list[MAXBUF];
 801         size_t dlen, curlen;
 802         int MOD_RESULT = 0;
 803
 804         if (!IS_LOCAL(user))
 805                 return;
 806
 807         FOREACH_RESULT(I_OnUserList,OnUserList(user, this));
 808         ServerInstance->Log(DEBUG,"MOD_RESULT for UserList = %d",MOD_RESULT);
 809         if (MOD_RESULT == 1)
 810                 return;
 811
 812         ServerInstance->Log(DEBUG,"Using builtin NAMES list generation");
 813
 814         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 815
 816         int numusers = 0;
 817         char* ptr = list + dlen;
 818
 819         CUList *ulist= this->GetUsers();
 820
 821         /* Improvement by Brain - this doesnt change in value, so why was it inside
 822          * the loop?
 823          */
 824         bool has_user = this->HasUser(user);
 825
 826         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 827         {
 828                 if ((!has_user) && (i->second->modes[UM_INVISIBLE]))
 829                 {
 830                         /*
 831                          * user is +i, and source not on the channel, does not show
 832                          * nick in NAMES list
 833                          */
 834                         continue;
 835                 }
 836
 837                 size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetPrefixChar(i->second), i->second->nick);
 838
 839                 curlen += ptrlen;
 840                 ptr += ptrlen;
 841
 842                 numusers++;
 843
 844                 if (curlen > (480-NICKMAX))
 845                 {
 846                         /* list overflowed into multiple numerics */
 847                         user->WriteServ(std::string(list));
 848
 849                         /* reset our lengths */
 850                         dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name);
 851                         ptr = list + dlen;
 852
 853                         ptrlen = 0;
 854                         numusers = 0;
 855                 }
 856         }
 857
 858         /* if whats left in the list isnt empty, send it */
 859         if (numusers)
 860         {
 861                 user->WriteServ(std::string(list));
 862         }
 863
 864         user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, this->name);
 865 }
 866
 867 long chanrec::GetMaxBans()
 868 {
 869         /* Return the cached value if there is one */
 870         if (this->maxbans)
 871                 return this->maxbans;
 872
 873         /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
 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                         this->maxbans = n->second;
 879                         return n->second;
 880                 }
 881         }
 882
 883         /* Screw it, just return the default of 64 */
 884         this->maxbans = 64;
 885         return this->maxbans;
 886 }
 887
 888 void chanrec::ResetMaxBans()
 889 {
 890         this->maxbans = 0;
 891 }
 892
 893 /* returns the status character for a given user on a channel, e.g. @ for op,
 894  * % for halfop etc. If the user has several modes set, the highest mode
 895  * the user has must be returned.
 896  */
 897 const char* chanrec::GetPrefixChar(userrec *user)
 898 {
 899         static char pf[2] = {0, 0};
 900
 901         prefixlist::iterator n = prefixes.find(user);
 902         if (n != prefixes.end())
 903         {
 904                 if (n->second.size())
 905                 {
 906                         /* If the user has any prefixes, their highest prefix
 907                          * will always be at the head of the list, as the list is
 908                          * sorted in rank order highest first (see SetPrefix()
 909                          * for reasons why)
 910                          */
 911                         *pf = n->second.begin()->first;
 912                         return pf;
 913                 }
 914         }
 915
 916         *pf = 0;
 917         return pf;
 918 }
 919
 920 const char* chanrec::GetAllPrefixChars(userrec* user)
 921 {
 922         static char prefix[MAXBUF];
 923         int ctr = 0;
 924         *prefix = 0;
 925
 926         prefixlist::iterator n = prefixes.find(user);
 927         if (n != prefixes.end())
 928         {
 929                 for (std::vector<prefixtype>::iterator x = n->second.begin(); x != n->second.end(); x++)
 930                 {
 931                         prefix[ctr++] = x->first;
 932                 }
 933         }
 934
 935         prefix[ctr] = 0;
 936
 937         return prefix;
 938 }
 939
 940 unsigned int chanrec::GetPrefixValue(userrec* user)
 941 {
 942         prefixlist::iterator n = prefixes.find(user);
 943         if (n != prefixes.end())
 944         {
 945                 if (n->second.size())
 946                         return n->second.begin()->second;
 947         }
 948         return 0;
 949 }
 950
 951 int chanrec::GetStatusFlags(userrec *user)
 952 {
 953         UCListIter i = user->chans.find(this);
 954         if (i != user->chans.end())
 955         {
 956                 return i->second;
 957         }
 958         return 0;
 959 }
 960
 961 int chanrec::GetStatus(userrec *user)
 962 {
 963         if (ServerInstance->ULine(user->server))
 964                 return STATUS_OP;
 965
 966         UCListIter i = user->chans.find(this);
 967         if (i != user->chans.end())
 968         {
 969                 if ((i->second & UCMODE_OP) > 0)
 970                 {
 971                         return STATUS_OP;
 972                 }
 973                 if ((i->second & UCMODE_HOP) > 0)
 974                 {
 975                         return STATUS_HOP;
 976                 }
 977                 if ((i->second & UCMODE_VOICE) > 0)
 978                 {
 979                         return STATUS_VOICE;
 980                 }
 981                 return STATUS_NORMAL;
 982         }
 983         return STATUS_NORMAL;
 984 }
 985
 986 void chanrec::SetPrefix(userrec* user, char prefix, unsigned int prefix_value, bool adding)
 987 {
 988         ServerInstance->Log(DEBUG,"Setting prefix: %c on user %s in %s to %d", prefix, user->nick, this->name, adding);
 989         prefixlist::iterator n = prefixes.find(user);
 990         prefixtype pfx = std::make_pair(prefix,prefix_value);
 991         if (adding)
 992         {
 993                 if (n != prefixes.end())
 994                 {
 995                         if (std::find(n->second.begin(), n->second.end(), pfx) == n->second.end())
 996                         {
 997                                 n->second.push_back(pfx);
 998                                 /* We must keep prefixes in rank order, largest first.
 999                                  * This is for two reasons, firstly because x-chat *ass-u-me's* this
1000                                  * state, and secondly it turns out to be a benefit to us later.
1001                                  * See above in GetPrefix().
1002                                  */
1003                                 std::sort(n->second.begin(), n->second.end(), ModeParser::PrefixComparison);
1004                         }
1005                 }
1006                 else
1007                 {
1008                         pfxcontainer one;
1009                         one.push_back(pfx);
1010                         prefixes.insert(std::make_pair<userrec*,pfxcontainer>(user, one));
1011                 }
1012         }
1013         else
1014         {
1015                 if (n != prefixes.end())
1016                 {
1017                         pfxcontainer::iterator x = std::find(n->second.begin(), n->second.end(), pfx);
1018                         if (x != n->second.end())
1019                                 n->second.erase(x);
1020                 }
1021         }
1022         ServerInstance->Log(DEBUG,"Added prefix %c to %s for %s, prefixlist size is now %d", prefix, this->name, user->nick, prefixes.size());
1023 }
1024
1025 void chanrec::RemoveAllPrefixes(userrec* user)
1026 {
1027         prefixlist::iterator n = prefixes.find(user);
1028         if (n != prefixes.end())
1029         {
1030                 ServerInstance->Log(DEBUG,"Removed prefixes from %s for %s, prefixlist size is now %d", this->name, user->nick, prefixes.size());
1031                 prefixes.erase(n);
1032         }
1033 }
1034