src/users.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2006-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2007, 2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2008 John Brooks <john.brooks@dereferenced.net>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2008 Oliver Lupton <oliverlupton@gmail.com>
  10  *   Copyright (C) 2003-2008 Craig Edwards <craigedwards@brainbox.cc>
  11  *
  12  * This file is part of InspIRCd.  InspIRCd is free software: you can
  13  * redistribute it and/or modify it under the terms of the GNU General Public
  14  * License as published by the Free Software Foundation, version 2.
  15  *
  16  * This program is distributed in the hope that it will be useful, but WITHOUT
  17  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  18  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  19  * details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25
  26 #include "inspircd.h"
  27 #include <stdarg.h>
  28 #include "socketengine.h"
  29 #include "xline.h"
  30 #include "bancache.h"
  31
  32 already_sent_t LocalUser::already_sent_id = 0;
  33
  34 bool User::IsNoticeMaskSet(unsigned char sm)
  35 {
  36         if (!isalpha(sm))
  37                 return false;
  38         return (snomasks[sm-65]);
  39 }
  40
  41 bool User::IsModeSet(unsigned char m)
  42 {
  43         if (!isalpha(m))
  44                 return false;
  45         return (modes[m-65]);
  46 }
  47
  48 const char* User::FormatModes(bool showparameters)
  49 {
  50         static std::string data;
  51         std::string params;
  52         data.clear();
  53
  54         for (unsigned char n = 0; n < 64; n++)
  55         {
  56                 if (modes[n])
  57                 {
  58                         data.push_back(n + 65);
  59                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
  60                         if (showparameters && mh && mh->GetNumParams(true))
  61                         {
  62                                 std::string p = mh->GetUserParameter(this);
  63                                 if (p.length())
  64                                         params.append(" ").append(p);
  65                         }
  66                 }
  67         }
  68         data += params;
  69         return data.c_str();
  70 }
  71
  72 User::User(const std::string &uid, const std::string& sid, int type)
  73         : uuid(uid), server(sid), usertype(type)
  74 {
  75         age = ServerInstance->Time();
  76         signon = 0;
  77         registered = 0;
  78         quietquit = quitting = false;
  79         client_sa.sa.sa_family = AF_UNSPEC;
  80
  81         ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New UUID for user: %s", uuid.c_str());
  82
  83         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
  84         if (finduuid == ServerInstance->Users->uuidlist->end())
  85                 (*ServerInstance->Users->uuidlist)[uuid] = this;
  86         else
  87                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
  88 }
  89
  90 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
  91         : User(ServerInstance->UIDGen.GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
  92         localuseriter(ServerInstance->Users->local_users.end()),
  93         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
  94         already_sent(0)
  95 {
  96         exempt = quitting_sendq = false;
  97         idle_lastmsg = 0;
  98         ident = "unknown";
  99         lastping = 0;
 100         eh.SetFd(myfd);
 101         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 102         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 103         dhost = host = GetIPString();
 104 }
 105
 106 User::~User()
 107 {
 108         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 109                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 110 }
 111
 112 const std::string& User::MakeHost()
 113 {
 114         if (!this->cached_makehost.empty())
 115                 return this->cached_makehost;
 116
 117         // XXX: Is there really a need to cache this?
 118         this->cached_makehost = ident + "@" + host;
 119         return this->cached_makehost;
 120 }
 121
 122 const std::string& User::MakeHostIP()
 123 {
 124         if (!this->cached_hostip.empty())
 125                 return this->cached_hostip;
 126
 127         // XXX: Is there really a need to cache this?
 128         this->cached_hostip = ident + "@" + this->GetIPString();
 129         return this->cached_hostip;
 130 }
 131
 132 const std::string& User::GetFullHost()
 133 {
 134         if (!this->cached_fullhost.empty())
 135                 return this->cached_fullhost;
 136
 137         // XXX: Is there really a need to cache this?
 138         this->cached_fullhost = nick + "!" + ident + "@" + dhost;
 139         return this->cached_fullhost;
 140 }
 141
 142 const std::string& User::GetFullRealHost()
 143 {
 144         if (!this->cached_fullrealhost.empty())
 145                 return this->cached_fullrealhost;
 146
 147         // XXX: Is there really a need to cache this?
 148         this->cached_fullrealhost = nick + "!" + ident + "@" + host;
 149         return this->cached_fullrealhost;
 150 }
 151
 152 InviteList& LocalUser::GetInviteList()
 153 {
 154         RemoveExpiredInvites();
 155         return invites;
 156 }
 157
 158 bool LocalUser::RemoveInvite(Channel* chan)
 159 {
 160         Invitation* inv = Invitation::Find(chan, this);
 161         if (inv)
 162         {
 163                 inv->cull();
 164                 delete inv;
 165                 return true;
 166         }
 167         return false;
 168 }
 169
 170 void LocalUser::RemoveExpiredInvites()
 171 {
 172         Invitation::Find(NULL, this);
 173 }
 174
 175 bool User::HasModePermission(unsigned char, ModeType)
 176 {
 177         return true;
 178 }
 179
 180 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 181 {
 182         if (!this->IsOper())
 183                 return false;
 184
 185         if (mode < 'A' || mode > ('A' + 64)) return false;
 186
 187         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 188
 189 }
 190 /*
 191  * users on remote servers can completely bypass all permissions based checks.
 192  * This prevents desyncs when one server has different type/class tags to another.
 193  * That having been said, this does open things up to the possibility of source changes
 194  * allowing remote kills, etc - but if they have access to the src, they most likely have
 195  * access to the conf - so it's an end to a means either way.
 196  */
 197 bool User::HasPermission(const std::string&)
 198 {
 199         return true;
 200 }
 201
 202 bool LocalUser::HasPermission(const std::string &command)
 203 {
 204         // are they even an oper at all?
 205         if (!this->IsOper())
 206         {
 207                 return false;
 208         }
 209
 210         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 211                 return true;
 212         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 213                 return true;
 214
 215         return false;
 216 }
 217
 218 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 219 {
 220         return true;
 221 }
 222
 223 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 224 {
 225         if (!this->IsOper())
 226         {
 227                 if (noisy)
 228                         this->WriteNotice("You are not an oper");
 229                 return false;
 230         }
 231
 232         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 233         {
 234                 return true;
 235         }
 236         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 237         {
 238                 return true;
 239         }
 240
 241         if (noisy)
 242                 this->WriteNotice("Oper type " + oper->name + " does not have access to priv " + privstr);
 243
 244         return false;
 245 }
 246
 247 void UserIOHandler::OnDataReady()
 248 {
 249         if (user->quitting)
 250                 return;
 251
 252         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 253         {
 254                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 255                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 256                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 257                 return;
 258         }
 259         unsigned long sendqmax = ULONG_MAX;
 260         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 261                 sendqmax = user->MyClass->GetSendqSoftMax();
 262         unsigned long penaltymax = ULONG_MAX;
 263         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 264                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 265
 266         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 267         {
 268                 std::string line;
 269                 line.reserve(ServerInstance->Config->Limits.MaxLine);
 270                 std::string::size_type qpos = 0;
 271                 while (qpos < recvq.length())
 272                 {
 273                         char c = recvq[qpos++];
 274                         switch (c)
 275                         {
 276                         case '\0':
 277                                 c = ' ';
 278                                 break;
 279                         case '\r':
 280                                 continue;
 281                         case '\n':
 282                                 goto eol_found;
 283                         }
 284                         if (line.length() < ServerInstance->Config->Limits.MaxLine - 2)
 285                                 line.push_back(c);
 286                 }
 287                 // if we got here, the recvq ran out before we found a newline
 288                 return;
 289 eol_found:
 290                 // just found a newline. Terminate the string, and pull it out of recvq
 291                 recvq = recvq.substr(qpos);
 292
 293                 // TODO should this be moved to when it was inserted in recvq?
 294                 ServerInstance->stats->statsRecv += qpos;
 295                 user->bytes_in += qpos;
 296                 user->cmds_in++;
 297
 298                 ServerInstance->Parser->ProcessBuffer(line, user);
 299                 if (user->quitting)
 300                         return;
 301         }
 302         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 303                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 304 }
 305
 306 void UserIOHandler::AddWriteBuf(const std::string &data)
 307 {
 308         if (user->quitting_sendq)
 309                 return;
 310         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 311                 !user->HasPrivPermission("users/flood/increased-buffers"))
 312         {
 313                 user->quitting_sendq = true;
 314                 ServerInstance->GlobalCulls.AddSQItem(user);
 315                 return;
 316         }
 317
 318         // We still want to append data to the sendq of a quitting user,
 319         // e.g. their ERROR message that says 'closing link'
 320
 321         WriteData(data);
 322 }
 323
 324 void UserIOHandler::OnError(BufferedSocketError)
 325 {
 326         ServerInstance->Users->QuitUser(user, getError());
 327 }
 328
 329 CullResult User::cull()
 330 {
 331         if (!quitting)
 332                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 333         PurgeEmptyChannels();
 334
 335         if (client_sa.sa.sa_family != AF_UNSPEC)
 336                 ServerInstance->Users->RemoveCloneCounts(this);
 337
 338         return Extensible::cull();
 339 }
 340
 341 CullResult LocalUser::cull()
 342 {
 343         // The iterator is initialized to local_users.end() in the constructor. It is
 344         // overwritten in UserManager::AddUser() with the real iterator so this check
 345         // is only a precaution currently.
 346         if (localuseriter != ServerInstance->Users->local_users.end())
 347         {
 348                 ServerInstance->Users->local_count--;
 349                 ServerInstance->Users->local_users.erase(localuseriter);
 350         }
 351         else
 352                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: LocalUserIter does not point to a valid entry for " + this->nick);
 353
 354         ClearInvites();
 355         eh.cull();
 356         return User::cull();
 357 }
 358
 359 CullResult FakeUser::cull()
 360 {
 361         // Fake users don't quit, they just get culled.
 362         quitting = true;
 363         ServerInstance->Users->clientlist->erase(nick);
 364         ServerInstance->Users->uuidlist->erase(uuid);
 365         return User::cull();
 366 }
 367
 368 void User::Oper(OperInfo* info)
 369 {
 370         if (this->IsModeSet('o'))
 371                 this->UnOper();
 372
 373         this->modes[UM_OPERATOR] = 1;
 374         this->oper = info;
 375         this->WriteServ("MODE %s :+o", this->nick.c_str());
 376         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 377
 378         std::string opername;
 379         if (info->oper_block)
 380                 opername = info->oper_block->getString("name");
 381
 382         if (IS_LOCAL(this))
 383         {
 384                 LocalUser* l = IS_LOCAL(this);
 385                 std::string vhost = oper->getConfig("vhost");
 386                 if (!vhost.empty())
 387                         l->ChangeDisplayedHost(vhost.c_str());
 388                 std::string opClass = oper->getConfig("class");
 389                 if (!opClass.empty())
 390                         l->SetClass(opClass);
 391         }
 392
 393         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 394                 nick.c_str(), ident.c_str(), host.c_str(), oper->name.c_str(), opername.c_str());
 395         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->name.c_str());
 396
 397         ServerInstance->Logs->Log("OPER", LOG_DEFAULT, "%s opered as type: %s", GetFullRealHost().c_str(), oper->name.c_str());
 398         ServerInstance->Users->all_opers.push_back(this);
 399
 400         // Expand permissions from config for faster lookup
 401         if (IS_LOCAL(this))
 402                 oper->init();
 403
 404         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 405 }
 406
 407 void OperInfo::init()
 408 {
 409         AllowedOperCommands.clear();
 410         AllowedPrivs.clear();
 411         AllowedUserModes.reset();
 412         AllowedChanModes.reset();
 413         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 414
 415         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 416         {
 417                 ConfigTag* tag = *iter;
 418                 std::string mycmd, mypriv;
 419                 /* Process commands */
 420                 irc::spacesepstream CommandList(tag->getString("commands"));
 421                 while (CommandList.GetToken(mycmd))
 422                 {
 423                         AllowedOperCommands.insert(mycmd);
 424                 }
 425
 426                 irc::spacesepstream PrivList(tag->getString("privs"));
 427                 while (PrivList.GetToken(mypriv))
 428                 {
 429                         AllowedPrivs.insert(mypriv);
 430                 }
 431
 432                 std::string modes = tag->getString("usermodes");
 433                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 434                 {
 435                         if (*c == '*')
 436                         {
 437                                 this->AllowedUserModes.set();
 438                         }
 439                         else if (*c >= 'A' && *c < 'z')
 440                         {
 441                                 this->AllowedUserModes[*c - 'A'] = true;
 442                         }
 443                 }
 444
 445                 modes = tag->getString("chanmodes");
 446                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 447                 {
 448                         if (*c == '*')
 449                         {
 450                                 this->AllowedChanModes.set();
 451                         }
 452                         else if (*c >= 'A' && *c < 'z')
 453                         {
 454                                 this->AllowedChanModes[*c - 'A'] = true;
 455                         }
 456                 }
 457         }
 458 }
 459
 460 void User::UnOper()
 461 {
 462         if (!this->IsOper())
 463                 return;
 464
 465         /*
 466          * unset their oper type (what IS_OPER checks).
 467          * note, order is important - this must come before modes as -o attempts
 468          * to call UnOper. -- w00t
 469          */
 470         oper = NULL;
 471
 472
 473         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 474         std::string moderemove("-");
 475
 476         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 477         {
 478                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 479                 if (mh && mh->NeedsOper())
 480                         moderemove += letter;
 481         }
 482
 483
 484         std::vector<std::string> parameters;
 485         parameters.push_back(this->nick);
 486         parameters.push_back(moderemove);
 487
 488         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 489
 490         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 491         ServerInstance->Users->all_opers.remove(this);
 492
 493         this->modes[UM_OPERATOR] = 0;
 494 }
 495
 496 /*
 497  * Check class restrictions
 498  */
 499 void LocalUser::CheckClass(bool clone_count)
 500 {
 501         ConnectClass* a = this->MyClass;
 502
 503         if (!a)
 504         {
 505                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 506                 return;
 507         }
 508         else if (a->type == CC_DENY)
 509         {
 510                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 511                 return;
 512         }
 513         else if (clone_count)
 514         {
 515                 if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 516                 {
 517                         ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 518                         if (a->maxconnwarn)
 519                                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString().c_str());
 520                         return;
 521                 }
 522                 else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 523                 {
 524                         ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 525                         if (a->maxconnwarn)
 526                                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString().c_str());
 527                         return;
 528                 }
 529         }
 530
 531         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 532 }
 533
 534 bool LocalUser::CheckLines(bool doZline)
 535 {
 536         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 537
 538         if (!this->exempt)
 539         {
 540                 for (int n = 0; check[n]; ++n)
 541                 {
 542                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 543
 544                         if (r)
 545                         {
 546                                 r->Apply(this);
 547                                 return true;
 548                         }
 549                 }
 550         }
 551
 552         return false;
 553 }
 554
 555 void LocalUser::FullConnect()
 556 {
 557         ServerInstance->stats->statsConnects++;
 558         this->idle_lastmsg = ServerInstance->Time();
 559
 560         /*
 561          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 562          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 563          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 564          * Don't remove this! -- w00t
 565          */
 566         MyClass = NULL;
 567         SetClass();
 568         CheckClass();
 569         CheckLines();
 570
 571         if (quitting)
 572                 return;
 573
 574         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str());
 575         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version %s",this->nick.c_str(),ServerInstance->Config->ServerName.c_str(),BRANCH);
 576         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 577
 578         const std::string& modelist = ServerInstance->Modes->GetModeListFor004Numeric();
 579         this->WriteNumeric(RPL_SERVERVERSION, "%s %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), BRANCH, modelist.c_str());
 580
 581         ServerInstance->ISupport.SendTo(this);
 582         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 583
 584         /* Now registered */
 585         if (ServerInstance->Users->unregistered_count)
 586                 ServerInstance->Users->unregistered_count--;
 587
 588         /* Trigger MOTD and LUSERS output, give modules a chance too */
 589         ModResult MOD_RESULT;
 590         std::string command("LUSERS");
 591         std::vector<std::string> parameters;
 592         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 593         if (!MOD_RESULT)
 594                 ServerInstance->Parser->CallHandler(command, parameters, this);
 595
 596         MOD_RESULT = MOD_RES_PASSTHRU;
 597         command = "MOTD";
 598         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 599         if (!MOD_RESULT)
 600                 ServerInstance->Parser->CallHandler(command, parameters, this);
 601
 602         if (ServerInstance->Config->RawLog)
 603                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 604
 605         /*
 606          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 607          * for a user that doesn't exist yet.
 608          */
 609         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 610
 611         this->registered = REG_ALL;
 612
 613         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 614
 615         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d (class %s): %s (%s) [%s]",
 616                 this->GetServerPort(), this->MyClass->name.c_str(), GetFullRealHost().c_str(), this->GetIPString().c_str(), this->fullname.c_str());
 617         ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Adding NEGATIVE hit for " + this->GetIPString());
 618         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 619         // reset the flood penalty (which could have been raised due to things like auto +x)
 620         CommandFloodPenalty = 0;
 621 }
 622
 623 void User::InvalidateCache()
 624 {
 625         /* Invalidate cache */
 626         cached_fullhost.clear();
 627         cached_hostip.clear();
 628         cached_makehost.clear();
 629         cached_fullrealhost.clear();
 630 }
 631
 632 bool User::ChangeNick(const std::string& newnick, bool force)
 633 {
 634         if (quitting)
 635         {
 636                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Attempted to change nick of a quitting user: " + this->nick);
 637                 return false;
 638         }
 639
 640         if (!force)
 641         {
 642                 ModResult MOD_RESULT;
 643                 FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 644
 645                 if (MOD_RESULT == MOD_RES_DENY)
 646                 {
 647                         ServerInstance->stats->statsCollisions++;
 648                         return false;
 649                 }
 650         }
 651
 652         if (assign(newnick) == assign(nick))
 653         {
 654                 // case change, don't need to check Q:lines and such
 655                 // and, if it's identical including case, we can leave right now
 656                 if (newnick == nick)
 657                         return true;
 658         }
 659         else
 660         {
 661                 /*
 662                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 663                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 664                  * Thanks Kein for finding this. -- w00t
 665                  *
 666                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 667                  *              -- w00t
 668                  */
 669                 if (IS_LOCAL(this) && !force)
 670                 {
 671                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 672                         if (mq)
 673                         {
 674                                 if (this->registered == REG_ALL)
 675                                 {
 676                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s: %s",
 677                                                 newnick.c_str(), GetFullRealHost().c_str(), mq->reason.c_str());
 678                                 }
 679                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 680                                 return false;
 681                         }
 682
 683                         if (ServerInstance->Config->RestrictBannedUsers)
 684                         {
 685                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 686                                 {
 687                                         Channel *chan = *i;
 688                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 689                                         {
 690                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 691                                                 return false;
 692                                         }
 693                                 }
 694                         }
 695                 }
 696
 697                 /*
 698                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 699                  * then we have a potential collide. Check whether someone else is camping on the nick
 700                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 701                  * camper to their UID, and allow the incoming nick change.
 702                  *
 703                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 704                  * because the nick is already (rightfully) in use. -- w00t
 705                  */
 706                 User* InUse = ServerInstance->FindNickOnly(newnick);
 707                 if (InUse && (InUse != this))
 708                 {
 709                         if (InUse->registered != REG_ALL)
 710                         {
 711                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 712                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 713                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 714
 715                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 716                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 717
 718                                 InUse->nick = InUse->uuid;
 719                                 InUse->InvalidateCache();
 720                                 InUse->registered &= ~REG_NICK;
 721                         }
 722                         else
 723                         {
 724                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 725                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 726                                 return false;
 727                         }
 728                 }
 729         }
 730
 731         if (this->registered == REG_ALL)
 732                 this->WriteCommon("NICK %s",newnick.c_str());
 733         std::string oldnick = nick;
 734         nick = newnick;
 735
 736         InvalidateCache();
 737         ServerInstance->Users->clientlist->erase(oldnick);
 738         (*(ServerInstance->Users->clientlist))[newnick] = this;
 739
 740         if (registered == REG_ALL)
 741                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 742
 743         return true;
 744 }
 745
 746 int LocalUser::GetServerPort()
 747 {
 748         switch (this->server_sa.sa.sa_family)
 749         {
 750                 case AF_INET6:
 751                         return htons(this->server_sa.in6.sin6_port);
 752                 case AF_INET:
 753                         return htons(this->server_sa.in4.sin_port);
 754         }
 755         return 0;
 756 }
 757
 758 const std::string& User::GetIPString()
 759 {
 760         int port;
 761         if (cachedip.empty())
 762         {
 763                 irc::sockets::satoap(client_sa, cachedip, port);
 764                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 765                 if (cachedip[0] == ':')
 766                         cachedip.insert(0,1,'0');
 767         }
 768
 769         return cachedip;
 770 }
 771
 772 irc::sockets::cidr_mask User::GetCIDRMask()
 773 {
 774         int range = 0;
 775         switch (client_sa.sa.sa_family)
 776         {
 777                 case AF_INET6:
 778                         range = ServerInstance->Config->c_ipv6_range;
 779                         break;
 780                 case AF_INET:
 781                         range = ServerInstance->Config->c_ipv4_range;
 782                         break;
 783         }
 784         return irc::sockets::cidr_mask(client_sa, range);
 785 }
 786
 787 bool User::SetClientIP(const char* sip, bool recheck_eline)
 788 {
 789         cachedip.clear();
 790         cached_hostip.clear();
 791         return irc::sockets::aptosa(sip, 0, client_sa);
 792 }
 793
 794 void User::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 795 {
 796         cachedip.clear();
 797         cached_hostip.clear();
 798         memcpy(&client_sa, &sa, sizeof(irc::sockets::sockaddrs));
 799 }
 800
 801 bool LocalUser::SetClientIP(const char* sip, bool recheck_eline)
 802 {
 803         irc::sockets::sockaddrs sa;
 804         if (!irc::sockets::aptosa(sip, 0, sa))
 805                 // Invalid
 806                 return false;
 807
 808         LocalUser::SetClientIP(sa, recheck_eline);
 809         return true;
 810 }
 811
 812 void LocalUser::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 813 {
 814         if (sa != client_sa)
 815         {
 816                 User::SetClientIP(sa);
 817                 if (recheck_eline)
 818                         this->exempt = (ServerInstance->XLines->MatchesLine("E", this) != NULL);
 819
 820                 FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(this));
 821         }
 822 }
 823
 824 static std::string wide_newline("\r\n");
 825
 826 void User::Write(const std::string& text)
 827 {
 828 }
 829
 830 void User::Write(const char *text, ...)
 831 {
 832 }
 833
 834 void LocalUser::Write(const std::string& text)
 835 {
 836         if (!ServerInstance->SE->BoundsCheckFd(&eh))
 837                 return;
 838
 839         if (text.length() > ServerInstance->Config->Limits.MaxLine - 2)
 840         {
 841                 // this should happen rarely or never. Crop the string at 512 and try again.
 842                 std::string try_again = text.substr(0, ServerInstance->Config->Limits.MaxLine - 2);
 843                 Write(try_again);
 844                 return;
 845         }
 846
 847         ServerInstance->Logs->Log("USEROUTPUT", LOG_RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
 848
 849         eh.AddWriteBuf(text);
 850         eh.AddWriteBuf(wide_newline);
 851
 852         ServerInstance->stats->statsSent += text.length() + 2;
 853         this->bytes_out += text.length() + 2;
 854         this->cmds_out++;
 855 }
 856
 857 /** Write()
 858  */
 859 void LocalUser::Write(const char *text, ...)
 860 {
 861         std::string textbuffer;
 862         VAFORMAT(textbuffer, text, text);
 863         this->Write(textbuffer);
 864 }
 865
 866 void User::WriteServ(const std::string& text)
 867 {
 868         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
 869 }
 870
 871 /** WriteServ()
 872  *  Same as Write(), except `text' is prefixed with `:server.name '.
 873  */
 874 void User::WriteServ(const char* text, ...)
 875 {
 876         std::string textbuffer;
 877         VAFORMAT(textbuffer, text, text);
 878         this->WriteServ(textbuffer);
 879 }
 880
 881 void User::WriteNotice(const std::string& text)
 882 {
 883         this->WriteServ("NOTICE " + (this->registered == REG_ALL ? this->nick : "*") + " :" + text);
 884 }
 885
 886 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
 887 {
 888         std::string textbuffer;
 889         VAFORMAT(textbuffer, text, text);
 890         this->WriteNumeric(numeric, textbuffer);
 891 }
 892
 893 void User::WriteNumeric(unsigned int numeric, const std::string &text)
 894 {
 895         ModResult MOD_RESULT;
 896
 897         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
 898
 899         if (MOD_RESULT == MOD_RES_DENY)
 900                 return;
 901
 902         const std::string message = InspIRCd::Format(":%s %03u %s", ServerInstance->Config->ServerName.c_str(),
 903                 numeric, text.c_str());
 904         this->Write(message);
 905 }
 906
 907 void User::WriteFrom(User *user, const std::string &text)
 908 {
 909         const std::string message = ":" + user->GetFullHost() + " " + text;
 910         this->Write(message);
 911 }
 912
 913
 914 /* write text from an originating user to originating user */
 915
 916 void User::WriteFrom(User *user, const char* text, ...)
 917 {
 918         std::string textbuffer;
 919         VAFORMAT(textbuffer, text, text);
 920         this->WriteFrom(user, textbuffer);
 921 }
 922
 923
 924 /* write text to an destination user from a source user (e.g. user privmsg) */
 925
 926 void User::WriteTo(User *dest, const char *data, ...)
 927 {
 928         std::string textbuffer;
 929         VAFORMAT(textbuffer, data, data);
 930         this->WriteTo(dest, textbuffer);
 931 }
 932
 933 void User::WriteTo(User *dest, const std::string &data)
 934 {
 935         dest->WriteFrom(this, data);
 936 }
 937
 938 void User::WriteCommon(const char* text, ...)
 939 {
 940         if (this->registered != REG_ALL || quitting)
 941                 return;
 942
 943         std::string textbuffer;
 944         VAFORMAT(textbuffer, text, text);
 945         textbuffer = ":" + this->GetFullHost() + " " + textbuffer;
 946         this->WriteCommonRaw(textbuffer, true);
 947 }
 948
 949 void User::WriteCommonExcept(const char* text, ...)
 950 {
 951         if (this->registered != REG_ALL || quitting)
 952                 return;
 953
 954         std::string textbuffer;
 955         VAFORMAT(textbuffer, text, text);
 956         textbuffer = ":" + this->GetFullHost() + " " + textbuffer;
 957         this->WriteCommonRaw(textbuffer, false);
 958 }
 959
 960 void User::WriteCommonRaw(const std::string &line, bool include_self)
 961 {
 962         if (this->registered != REG_ALL || quitting)
 963                 return;
 964
 965         LocalUser::already_sent_id++;
 966
 967         UserChanList include_c(chans);
 968         std::map<User*,bool> exceptions;
 969
 970         exceptions[this] = include_self;
 971
 972         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
 973
 974         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
 975         {
 976                 LocalUser* u = IS_LOCAL(i->first);
 977                 if (u && !u->quitting)
 978                 {
 979                         u->already_sent = LocalUser::already_sent_id;
 980                         if (i->second)
 981                                 u->Write(line);
 982                 }
 983         }
 984         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
 985         {
 986                 Channel* c = *v;
 987                 const UserMembList* ulist = c->GetUsers();
 988                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
 989                 {
 990                         LocalUser* u = IS_LOCAL(i->first);
 991                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
 992                         {
 993                                 u->already_sent = LocalUser::already_sent_id;
 994                                 u->Write(line);
 995                         }
 996                 }
 997         }
 998 }
 999
1000 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1001 {
1002         if (this->registered != REG_ALL)
1003                 return;
1004
1005         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1006
1007         const std::string normalMessage = ":" + this->GetFullHost() + " QUIT :" + normal_text;
1008         const std::string operMessage = ":" + this->GetFullHost() + " QUIT :" + oper_text;
1009
1010         UserChanList include_c(chans);
1011         std::map<User*,bool> exceptions;
1012
1013         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1014
1015         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1016         {
1017                 LocalUser* u = IS_LOCAL(i->first);
1018                 if (u && !u->quitting)
1019                 {
1020                         u->already_sent = uniq_id;
1021                         if (i->second)
1022                                 u->Write(u->IsOper() ? operMessage : normalMessage);
1023                 }
1024         }
1025         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1026         {
1027                 const UserMembList* ulist = (*v)->GetUsers();
1028                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1029                 {
1030                         LocalUser* u = IS_LOCAL(i->first);
1031                         if (u && !u->quitting && (u->already_sent != uniq_id))
1032                         {
1033                                 u->already_sent = uniq_id;
1034                                 u->Write(u->IsOper() ? operMessage : normalMessage);
1035                         }
1036                 }
1037         }
1038 }
1039
1040 void LocalUser::SendText(const std::string& line)
1041 {
1042         Write(line);
1043 }
1044
1045 void RemoteUser::SendText(const std::string& line)
1046 {
1047         ServerInstance->PI->PushToClient(this, line);
1048 }
1049
1050 void FakeUser::SendText(const std::string& line)
1051 {
1052 }
1053
1054 void User::SendText(const char *text, ...)
1055 {
1056         std::string line;
1057         VAFORMAT(line, text, text);
1058         SendText(line);
1059 }
1060
1061 void User::SendText(const std::string& linePrefix, std::stringstream& textStream)
1062 {
1063         std::string line;
1064         std::string word;
1065         while (textStream >> word)
1066         {
1067                 size_t lineLength = linePrefix.length() + line.length() + word.length() + 3; // "\s\n\r"
1068                 if (lineLength > ServerInstance->Config->Limits.MaxLine)
1069                 {
1070                         SendText(linePrefix + line);
1071                         line.clear();
1072                 }
1073                 line += " " + word;
1074         }
1075         SendText(linePrefix + line);
1076 }
1077
1078 /* return 0 or 1 depending if users u and u2 share one or more common channels
1079  * (used by QUIT, NICK etc which arent channel specific notices)
1080  *
1081  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1082  * the first users channels then the second users channels within the outer loop,
1083  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1084  * all possible iterations). However this new function instead checks against the
1085  * channel's userlist in the inner loop which is a std::map<User*,User*>
1086  * and saves us time as we already know what pointer value we are after.
1087  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1088  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1089  */
1090 bool User::SharesChannelWith(User *other)
1091 {
1092         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1093                 return false;
1094
1095         /* Outer loop */
1096         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1097         {
1098                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1099                  * by replacing it with a map::find which *should* be more efficient
1100                  */
1101                 if ((*i)->HasUser(other))
1102                         return true;
1103         }
1104         return false;
1105 }
1106
1107 bool User::ChangeName(const char* gecos)
1108 {
1109         if (!this->fullname.compare(gecos))
1110                 return true;
1111
1112         if (IS_LOCAL(this))
1113         {
1114                 ModResult MOD_RESULT;
1115                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1116                 if (MOD_RESULT == MOD_RES_DENY)
1117                         return false;
1118                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1119         }
1120         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1121
1122         return true;
1123 }
1124
1125 void User::DoHostCycle(const std::string &quitline)
1126 {
1127         if (!ServerInstance->Config->CycleHosts)
1128                 return;
1129
1130         already_sent_t silent_id = ++LocalUser::already_sent_id;
1131         already_sent_t seen_id = ++LocalUser::already_sent_id;
1132
1133         UserChanList include_c(chans);
1134         std::map<User*,bool> exceptions;
1135
1136         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1137
1138         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1139         {
1140                 LocalUser* u = IS_LOCAL(i->first);
1141                 if (u && !u->quitting)
1142                 {
1143                         if (i->second)
1144                         {
1145                                 u->already_sent = seen_id;
1146                                 u->Write(quitline);
1147                         }
1148                         else
1149                         {
1150                                 u->already_sent = silent_id;
1151                         }
1152                 }
1153         }
1154         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1155         {
1156                 Channel* c = *v;
1157                 Membership* memb = c->GetUser(this);
1158                 const std::string joinline = ":" + GetFullHost() + " JOIN " + c->name;
1159                 std::string modeline;
1160
1161                 if (!memb->modes.empty())
1162                 {
1163                         modeline = ":" + (ServerInstance->Config->CycleHostsFromUser ? GetFullHost() : ServerInstance->Config->ServerName)
1164                                 + " MODE " + c->name + " +" + memb->modes;
1165
1166                         for (size_t i = 0; i < memb->modes.length(); i++)
1167                                 modeline.append(" ").append(nick);
1168                 }
1169
1170                 const UserMembList *ulist = c->GetUsers();
1171                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1172                 {
1173                         LocalUser* u = IS_LOCAL(i->first);
1174                         if (u == NULL || u == this)
1175                                 continue;
1176                         if (u->already_sent == silent_id)
1177                                 continue;
1178
1179                         if (u->already_sent != seen_id)
1180                         {
1181                                 u->Write(quitline);
1182                                 u->already_sent = seen_id;
1183                         }
1184                         u->Write(joinline);
1185                         if (!memb->modes.empty())
1186                                 u->Write(modeline);
1187                 }
1188         }
1189 }
1190
1191 bool User::ChangeDisplayedHost(const char* shost)
1192 {
1193         if (dhost == shost)
1194                 return true;
1195
1196         if (IS_LOCAL(this))
1197         {
1198                 ModResult MOD_RESULT;
1199                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1200                 if (MOD_RESULT == MOD_RES_DENY)
1201                         return false;
1202         }
1203
1204         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1205
1206         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1207
1208         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1209         this->dhost.assign(shost, 0, 64);
1210
1211         this->InvalidateCache();
1212
1213         this->DoHostCycle(quitstr);
1214
1215         if (IS_LOCAL(this))
1216                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1217
1218         return true;
1219 }
1220
1221 bool User::ChangeIdent(const char* newident)
1222 {
1223         if (this->ident == newident)
1224                 return true;
1225
1226         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1227
1228         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1229
1230         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax);
1231
1232         this->InvalidateCache();
1233
1234         this->DoHostCycle(quitstr);
1235
1236         return true;
1237 }
1238
1239 void User::SendAll(const char* command, const char* text, ...)
1240 {
1241         std::string textbuffer;
1242         VAFORMAT(textbuffer, text, text);
1243         const std::string message = ":" + this->GetFullHost() + " " + command + " $* :" + textbuffer;
1244
1245         for (LocalUserList::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1246         {
1247                 if ((*i)->registered == REG_ALL)
1248                         (*i)->Write(message);
1249         }
1250 }
1251
1252 /*
1253  * Sets a user's connection class.
1254  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1255  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1256  * then their ip will be taken as 'priority' anyway, so for example,
1257  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1258  */
1259 void LocalUser::SetClass(const std::string &explicit_name)
1260 {
1261         ConnectClass *found = NULL;
1262
1263         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1264
1265         if (!explicit_name.empty())
1266         {
1267                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1268                 {
1269                         ConnectClass* c = *i;
1270
1271                         if (explicit_name == c->name)
1272                         {
1273                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Explicitly set to %s", explicit_name.c_str());
1274                                 found = c;
1275                         }
1276                 }
1277         }
1278         else
1279         {
1280                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1281                 {
1282                         ConnectClass* c = *i;
1283                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Checking %s", c->GetName().c_str());
1284
1285                         ModResult MOD_RESULT;
1286                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1287                         if (MOD_RESULT == MOD_RES_DENY)
1288                                 continue;
1289                         if (MOD_RESULT == MOD_RES_ALLOW)
1290                         {
1291                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Class forced by module to %s", c->GetName().c_str());
1292                                 found = c;
1293                                 break;
1294                         }
1295
1296                         if (c->type == CC_NAMED)
1297                                 continue;
1298
1299                         bool regdone = (registered != REG_NONE);
1300                         if (c->config->getBool("registered", regdone) != regdone)
1301                                 continue;
1302
1303                         /* check if host matches.. */
1304                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1305                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1306                         {
1307                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "No host match (for %s)", c->GetHost().c_str());
1308                                 continue;
1309                         }
1310
1311                         /*
1312                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1313                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1314                          */
1315                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1316                         {
1317                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1318                                 continue;
1319                         }
1320
1321                         /* if it requires a port ... */
1322                         int port = c->config->getInt("port");
1323                         if (port)
1324                         {
1325                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Requires port (%d)", port);
1326
1327                                 /* and our port doesn't match, fail. */
1328                                 if (this->GetServerPort() != port)
1329                                         continue;
1330                         }
1331
1332                         if (regdone && !c->config->getString("password").empty())
1333                         {
1334                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1335                                 {
1336                                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Bad password, skipping");
1337                                         continue;
1338                                 }
1339                         }
1340
1341                         /* we stop at the first class that meets ALL critera. */
1342                         found = c;
1343                         break;
1344                 }
1345         }
1346
1347         /*
1348          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1349          */
1350         if (found)
1351         {
1352                 MyClass = found;
1353         }
1354 }
1355
1356 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1357  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1358  * then their ip will be taken as 'priority' anyway, so for example,
1359  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1360  */
1361 ConnectClass* LocalUser::GetClass()
1362 {
1363         return MyClass;
1364 }
1365
1366 ConnectClass* User::GetClass()
1367 {
1368         return NULL;
1369 }
1370
1371 void User::PurgeEmptyChannels()
1372 {
1373         // firstly decrement the count on each channel
1374         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1375         {
1376                 Channel* c = *f;
1377                 c->DelUser(this);
1378         }
1379
1380         this->UnOper();
1381 }
1382
1383 const std::string& FakeUser::GetFullHost()
1384 {
1385         if (!ServerInstance->Config->HideWhoisServer.empty())
1386                 return ServerInstance->Config->HideWhoisServer;
1387         return server;
1388 }
1389
1390 const std::string& FakeUser::GetFullRealHost()
1391 {
1392         if (!ServerInstance->Config->HideWhoisServer.empty())
1393                 return ServerInstance->Config->HideWhoisServer;
1394         return server;
1395 }
1396
1397 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1398         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1399         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1400         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0),
1401         limit(0), nouserdns(false)
1402 {
1403 }
1404
1405 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1406         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1407         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1408         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1409         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1410         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1411         limit(parent.limit), nouserdns(parent.nouserdns)
1412 {
1413 }
1414
1415 void ConnectClass::Update(const ConnectClass* src)
1416 {
1417         config = src->config;
1418         type = src->type;
1419         fakelag = src->fakelag;
1420         name = src->name;
1421         registration_timeout = src->registration_timeout;
1422         host = src->host;
1423         pingtime = src->pingtime;
1424         softsendqmax = src->softsendqmax;
1425         hardsendqmax = src->hardsendqmax;
1426         recvqmax = src->recvqmax;
1427         penaltythreshold = src->penaltythreshold;
1428         commandrate = src->commandrate;
1429         maxlocal = src->maxlocal;
1430         maxglobal = src->maxglobal;
1431         maxconnwarn = src->maxconnwarn;
1432         maxchans = src->maxchans;
1433         limit = src->limit;
1434         nouserdns = src->nouserdns;
1435 }