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         ModeHandler* opermh = ServerInstance->Modes->FindMode('o', MODETYPE_USER);
 371         if (this->IsModeSet(opermh))
 372                 this->UnOper();
 373
 374         this->SetMode(opermh, true);
 375         this->oper = info;
 376         this->WriteServ("MODE %s :+o", this->nick.c_str());
 377         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 378
 379         std::string opername;
 380         if (info->oper_block)
 381                 opername = info->oper_block->getString("name");
 382
 383         if (IS_LOCAL(this))
 384         {
 385                 LocalUser* l = IS_LOCAL(this);
 386                 std::string vhost = oper->getConfig("vhost");
 387                 if (!vhost.empty())
 388                         l->ChangeDisplayedHost(vhost.c_str());
 389                 std::string opClass = oper->getConfig("class");
 390                 if (!opClass.empty())
 391                         l->SetClass(opClass);
 392         }
 393
 394         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 395                 nick.c_str(), ident.c_str(), host.c_str(), oper->name.c_str(), opername.c_str());
 396         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->name.c_str());
 397
 398         ServerInstance->Logs->Log("OPER", LOG_DEFAULT, "%s opered as type: %s", GetFullRealHost().c_str(), oper->name.c_str());
 399         ServerInstance->Users->all_opers.push_back(this);
 400
 401         // Expand permissions from config for faster lookup
 402         if (IS_LOCAL(this))
 403                 oper->init();
 404
 405         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 406 }
 407
 408 void OperInfo::init()
 409 {
 410         AllowedOperCommands.clear();
 411         AllowedPrivs.clear();
 412         AllowedUserModes.reset();
 413         AllowedChanModes.reset();
 414         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 415
 416         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 417         {
 418                 ConfigTag* tag = *iter;
 419                 std::string mycmd, mypriv;
 420                 /* Process commands */
 421                 irc::spacesepstream CommandList(tag->getString("commands"));
 422                 while (CommandList.GetToken(mycmd))
 423                 {
 424                         AllowedOperCommands.insert(mycmd);
 425                 }
 426
 427                 irc::spacesepstream PrivList(tag->getString("privs"));
 428                 while (PrivList.GetToken(mypriv))
 429                 {
 430                         AllowedPrivs.insert(mypriv);
 431                 }
 432
 433                 std::string modes = tag->getString("usermodes");
 434                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 435                 {
 436                         if (*c == '*')
 437                         {
 438                                 this->AllowedUserModes.set();
 439                         }
 440                         else if (*c >= 'A' && *c < 'z')
 441                         {
 442                                 this->AllowedUserModes[*c - 'A'] = true;
 443                         }
 444                 }
 445
 446                 modes = tag->getString("chanmodes");
 447                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 448                 {
 449                         if (*c == '*')
 450                         {
 451                                 this->AllowedChanModes.set();
 452                         }
 453                         else if (*c >= 'A' && *c < 'z')
 454                         {
 455                                 this->AllowedChanModes[*c - 'A'] = true;
 456                         }
 457                 }
 458         }
 459 }
 460
 461 void User::UnOper()
 462 {
 463         if (!this->IsOper())
 464                 return;
 465
 466         /*
 467          * unset their oper type (what IS_OPER checks).
 468          * note, order is important - this must come before modes as -o attempts
 469          * to call UnOper. -- w00t
 470          */
 471         oper = NULL;
 472
 473
 474         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 475         std::string moderemove("-");
 476
 477         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 478         {
 479                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 480                 if (mh && mh->NeedsOper())
 481                         moderemove += letter;
 482         }
 483
 484
 485         std::vector<std::string> parameters;
 486         parameters.push_back(this->nick);
 487         parameters.push_back(moderemove);
 488
 489         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 490
 491         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 492         ServerInstance->Users->all_opers.remove(this);
 493
 494         ModeHandler* opermh = ServerInstance->Modes->FindMode('o', MODETYPE_USER);
 495         this->SetMode(opermh, false);
 496 }
 497
 498 /*
 499  * Check class restrictions
 500  */
 501 void LocalUser::CheckClass(bool clone_count)
 502 {
 503         ConnectClass* a = this->MyClass;
 504
 505         if (!a)
 506         {
 507                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 508                 return;
 509         }
 510         else if (a->type == CC_DENY)
 511         {
 512                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 513                 return;
 514         }
 515         else if (clone_count)
 516         {
 517                 if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 518                 {
 519                         ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 520                         if (a->maxconnwarn)
 521                                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString().c_str());
 522                         return;
 523                 }
 524                 else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 525                 {
 526                         ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 527                         if (a->maxconnwarn)
 528                                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString().c_str());
 529                         return;
 530                 }
 531         }
 532
 533         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 534 }
 535
 536 bool LocalUser::CheckLines(bool doZline)
 537 {
 538         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 539
 540         if (!this->exempt)
 541         {
 542                 for (int n = 0; check[n]; ++n)
 543                 {
 544                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 545
 546                         if (r)
 547                         {
 548                                 r->Apply(this);
 549                                 return true;
 550                         }
 551                 }
 552         }
 553
 554         return false;
 555 }
 556
 557 void LocalUser::FullConnect()
 558 {
 559         ServerInstance->stats->statsConnects++;
 560         this->idle_lastmsg = ServerInstance->Time();
 561
 562         /*
 563          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 564          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 565          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 566          * Don't remove this! -- w00t
 567          */
 568         MyClass = NULL;
 569         SetClass();
 570         CheckClass();
 571         CheckLines();
 572
 573         if (quitting)
 574                 return;
 575
 576         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str());
 577         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version %s",this->nick.c_str(),ServerInstance->Config->ServerName.c_str(),BRANCH);
 578         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 579
 580         const std::string& modelist = ServerInstance->Modes->GetModeListFor004Numeric();
 581         this->WriteNumeric(RPL_SERVERVERSION, "%s %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), BRANCH, modelist.c_str());
 582
 583         ServerInstance->ISupport.SendTo(this);
 584         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 585
 586         /* Now registered */
 587         if (ServerInstance->Users->unregistered_count)
 588                 ServerInstance->Users->unregistered_count--;
 589
 590         /* Trigger MOTD and LUSERS output, give modules a chance too */
 591         ModResult MOD_RESULT;
 592         std::string command("LUSERS");
 593         std::vector<std::string> parameters;
 594         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 595         if (!MOD_RESULT)
 596                 ServerInstance->Parser->CallHandler(command, parameters, this);
 597
 598         MOD_RESULT = MOD_RES_PASSTHRU;
 599         command = "MOTD";
 600         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 601         if (!MOD_RESULT)
 602                 ServerInstance->Parser->CallHandler(command, parameters, this);
 603
 604         if (ServerInstance->Config->RawLog)
 605                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 606
 607         /*
 608          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 609          * for a user that doesn't exist yet.
 610          */
 611         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 612
 613         this->registered = REG_ALL;
 614
 615         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 616
 617         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d (class %s): %s (%s) [%s]",
 618                 this->GetServerPort(), this->MyClass->name.c_str(), GetFullRealHost().c_str(), this->GetIPString().c_str(), this->fullname.c_str());
 619         ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Adding NEGATIVE hit for " + this->GetIPString());
 620         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 621         // reset the flood penalty (which could have been raised due to things like auto +x)
 622         CommandFloodPenalty = 0;
 623 }
 624
 625 void User::InvalidateCache()
 626 {
 627         /* Invalidate cache */
 628         cached_fullhost.clear();
 629         cached_hostip.clear();
 630         cached_makehost.clear();
 631         cached_fullrealhost.clear();
 632 }
 633
 634 bool User::ChangeNick(const std::string& newnick, bool force)
 635 {
 636         if (quitting)
 637         {
 638                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Attempted to change nick of a quitting user: " + this->nick);
 639                 return false;
 640         }
 641
 642         if (!force)
 643         {
 644                 ModResult MOD_RESULT;
 645                 FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 646
 647                 if (MOD_RESULT == MOD_RES_DENY)
 648                 {
 649                         ServerInstance->stats->statsCollisions++;
 650                         return false;
 651                 }
 652         }
 653
 654         if (assign(newnick) == assign(nick))
 655         {
 656                 // case change, don't need to check Q:lines and such
 657                 // and, if it's identical including case, we can leave right now
 658                 if (newnick == nick)
 659                         return true;
 660         }
 661         else
 662         {
 663                 /*
 664                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 665                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 666                  * Thanks Kein for finding this. -- w00t
 667                  *
 668                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 669                  *              -- w00t
 670                  */
 671                 if (IS_LOCAL(this) && !force)
 672                 {
 673                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 674                         if (mq)
 675                         {
 676                                 if (this->registered == REG_ALL)
 677                                 {
 678                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s: %s",
 679                                                 newnick.c_str(), GetFullRealHost().c_str(), mq->reason.c_str());
 680                                 }
 681                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 682                                 return false;
 683                         }
 684
 685                         if (ServerInstance->Config->RestrictBannedUsers)
 686                         {
 687                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 688                                 {
 689                                         Channel *chan = *i;
 690                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 691                                         {
 692                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 693                                                 return false;
 694                                         }
 695                                 }
 696                         }
 697                 }
 698
 699                 /*
 700                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 701                  * then we have a potential collide. Check whether someone else is camping on the nick
 702                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 703                  * camper to their UID, and allow the incoming nick change.
 704                  *
 705                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 706                  * because the nick is already (rightfully) in use. -- w00t
 707                  */
 708                 User* InUse = ServerInstance->FindNickOnly(newnick);
 709                 if (InUse && (InUse != this))
 710                 {
 711                         if (InUse->registered != REG_ALL)
 712                         {
 713                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 714                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 715                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 716
 717                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 718                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 719
 720                                 InUse->nick = InUse->uuid;
 721                                 InUse->InvalidateCache();
 722                                 InUse->registered &= ~REG_NICK;
 723                         }
 724                         else
 725                         {
 726                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 727                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 728                                 return false;
 729                         }
 730                 }
 731         }
 732
 733         if (this->registered == REG_ALL)
 734                 this->WriteCommon("NICK %s",newnick.c_str());
 735         std::string oldnick = nick;
 736         nick = newnick;
 737
 738         InvalidateCache();
 739         ServerInstance->Users->clientlist->erase(oldnick);
 740         (*(ServerInstance->Users->clientlist))[newnick] = this;
 741
 742         if (registered == REG_ALL)
 743                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 744
 745         return true;
 746 }
 747
 748 int LocalUser::GetServerPort()
 749 {
 750         switch (this->server_sa.sa.sa_family)
 751         {
 752                 case AF_INET6:
 753                         return htons(this->server_sa.in6.sin6_port);
 754                 case AF_INET:
 755                         return htons(this->server_sa.in4.sin_port);
 756         }
 757         return 0;
 758 }
 759
 760 const std::string& User::GetIPString()
 761 {
 762         int port;
 763         if (cachedip.empty())
 764         {
 765                 irc::sockets::satoap(client_sa, cachedip, port);
 766                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 767                 if (cachedip[0] == ':')
 768                         cachedip.insert(0,1,'0');
 769         }
 770
 771         return cachedip;
 772 }
 773
 774 irc::sockets::cidr_mask User::GetCIDRMask()
 775 {
 776         int range = 0;
 777         switch (client_sa.sa.sa_family)
 778         {
 779                 case AF_INET6:
 780                         range = ServerInstance->Config->c_ipv6_range;
 781                         break;
 782                 case AF_INET:
 783                         range = ServerInstance->Config->c_ipv4_range;
 784                         break;
 785         }
 786         return irc::sockets::cidr_mask(client_sa, range);
 787 }
 788
 789 bool User::SetClientIP(const char* sip, bool recheck_eline)
 790 {
 791         cachedip.clear();
 792         cached_hostip.clear();
 793         return irc::sockets::aptosa(sip, 0, client_sa);
 794 }
 795
 796 void User::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 797 {
 798         cachedip.clear();
 799         cached_hostip.clear();
 800         memcpy(&client_sa, &sa, sizeof(irc::sockets::sockaddrs));
 801 }
 802
 803 bool LocalUser::SetClientIP(const char* sip, bool recheck_eline)
 804 {
 805         irc::sockets::sockaddrs sa;
 806         if (!irc::sockets::aptosa(sip, 0, sa))
 807                 // Invalid
 808                 return false;
 809
 810         LocalUser::SetClientIP(sa, recheck_eline);
 811         return true;
 812 }
 813
 814 void LocalUser::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 815 {
 816         if (sa != client_sa)
 817         {
 818                 User::SetClientIP(sa);
 819                 if (recheck_eline)
 820                         this->exempt = (ServerInstance->XLines->MatchesLine("E", this) != NULL);
 821
 822                 FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(this));
 823         }
 824 }
 825
 826 static std::string wide_newline("\r\n");
 827
 828 void User::Write(const std::string& text)
 829 {
 830 }
 831
 832 void User::Write(const char *text, ...)
 833 {
 834 }
 835
 836 void LocalUser::Write(const std::string& text)
 837 {
 838         if (!ServerInstance->SE->BoundsCheckFd(&eh))
 839                 return;
 840
 841         if (text.length() > ServerInstance->Config->Limits.MaxLine - 2)
 842         {
 843                 // this should happen rarely or never. Crop the string at 512 and try again.
 844                 std::string try_again = text.substr(0, ServerInstance->Config->Limits.MaxLine - 2);
 845                 Write(try_again);
 846                 return;
 847         }
 848
 849         ServerInstance->Logs->Log("USEROUTPUT", LOG_RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
 850
 851         eh.AddWriteBuf(text);
 852         eh.AddWriteBuf(wide_newline);
 853
 854         ServerInstance->stats->statsSent += text.length() + 2;
 855         this->bytes_out += text.length() + 2;
 856         this->cmds_out++;
 857 }
 858
 859 /** Write()
 860  */
 861 void LocalUser::Write(const char *text, ...)
 862 {
 863         std::string textbuffer;
 864         VAFORMAT(textbuffer, text, text);
 865         this->Write(textbuffer);
 866 }
 867
 868 void User::WriteServ(const std::string& text)
 869 {
 870         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
 871 }
 872
 873 /** WriteServ()
 874  *  Same as Write(), except `text' is prefixed with `:server.name '.
 875  */
 876 void User::WriteServ(const char* text, ...)
 877 {
 878         std::string textbuffer;
 879         VAFORMAT(textbuffer, text, text);
 880         this->WriteServ(textbuffer);
 881 }
 882
 883 void User::WriteNotice(const std::string& text)
 884 {
 885         this->WriteServ("NOTICE " + (this->registered == REG_ALL ? this->nick : "*") + " :" + text);
 886 }
 887
 888 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
 889 {
 890         std::string textbuffer;
 891         VAFORMAT(textbuffer, text, text);
 892         this->WriteNumeric(numeric, textbuffer);
 893 }
 894
 895 void User::WriteNumeric(unsigned int numeric, const std::string &text)
 896 {
 897         ModResult MOD_RESULT;
 898
 899         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
 900
 901         if (MOD_RESULT == MOD_RES_DENY)
 902                 return;
 903
 904         const std::string message = InspIRCd::Format(":%s %03u %s", ServerInstance->Config->ServerName.c_str(),
 905                 numeric, text.c_str());
 906         this->Write(message);
 907 }
 908
 909 void User::WriteFrom(User *user, const std::string &text)
 910 {
 911         const std::string message = ":" + user->GetFullHost() + " " + text;
 912         this->Write(message);
 913 }
 914
 915
 916 /* write text from an originating user to originating user */
 917
 918 void User::WriteFrom(User *user, const char* text, ...)
 919 {
 920         std::string textbuffer;
 921         VAFORMAT(textbuffer, text, text);
 922         this->WriteFrom(user, textbuffer);
 923 }
 924
 925
 926 /* write text to an destination user from a source user (e.g. user privmsg) */
 927
 928 void User::WriteTo(User *dest, const char *data, ...)
 929 {
 930         std::string textbuffer;
 931         VAFORMAT(textbuffer, data, data);
 932         this->WriteTo(dest, textbuffer);
 933 }
 934
 935 void User::WriteTo(User *dest, const std::string &data)
 936 {
 937         dest->WriteFrom(this, data);
 938 }
 939
 940 void User::WriteCommon(const char* text, ...)
 941 {
 942         if (this->registered != REG_ALL || quitting)
 943                 return;
 944
 945         std::string textbuffer;
 946         VAFORMAT(textbuffer, text, text);
 947         textbuffer = ":" + this->GetFullHost() + " " + textbuffer;
 948         this->WriteCommonRaw(textbuffer, true);
 949 }
 950
 951 void User::WriteCommonExcept(const char* text, ...)
 952 {
 953         if (this->registered != REG_ALL || quitting)
 954                 return;
 955
 956         std::string textbuffer;
 957         VAFORMAT(textbuffer, text, text);
 958         textbuffer = ":" + this->GetFullHost() + " " + textbuffer;
 959         this->WriteCommonRaw(textbuffer, false);
 960 }
 961
 962 void User::WriteCommonRaw(const std::string &line, bool include_self)
 963 {
 964         if (this->registered != REG_ALL || quitting)
 965                 return;
 966
 967         LocalUser::already_sent_id++;
 968
 969         UserChanList include_c(chans);
 970         std::map<User*,bool> exceptions;
 971
 972         exceptions[this] = include_self;
 973
 974         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
 975
 976         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
 977         {
 978                 LocalUser* u = IS_LOCAL(i->first);
 979                 if (u && !u->quitting)
 980                 {
 981                         u->already_sent = LocalUser::already_sent_id;
 982                         if (i->second)
 983                                 u->Write(line);
 984                 }
 985         }
 986         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
 987         {
 988                 Channel* c = *v;
 989                 const UserMembList* ulist = c->GetUsers();
 990                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
 991                 {
 992                         LocalUser* u = IS_LOCAL(i->first);
 993                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
 994                         {
 995                                 u->already_sent = LocalUser::already_sent_id;
 996                                 u->Write(line);
 997                         }
 998                 }
 999         }
1000 }
1001
1002 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1003 {
1004         if (this->registered != REG_ALL)
1005                 return;
1006
1007         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1008
1009         const std::string normalMessage = ":" + this->GetFullHost() + " QUIT :" + normal_text;
1010         const std::string operMessage = ":" + this->GetFullHost() + " QUIT :" + oper_text;
1011
1012         UserChanList include_c(chans);
1013         std::map<User*,bool> exceptions;
1014
1015         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1016
1017         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1018         {
1019                 LocalUser* u = IS_LOCAL(i->first);
1020                 if (u && !u->quitting)
1021                 {
1022                         u->already_sent = uniq_id;
1023                         if (i->second)
1024                                 u->Write(u->IsOper() ? operMessage : normalMessage);
1025                 }
1026         }
1027         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1028         {
1029                 const UserMembList* ulist = (*v)->GetUsers();
1030                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1031                 {
1032                         LocalUser* u = IS_LOCAL(i->first);
1033                         if (u && !u->quitting && (u->already_sent != uniq_id))
1034                         {
1035                                 u->already_sent = uniq_id;
1036                                 u->Write(u->IsOper() ? operMessage : normalMessage);
1037                         }
1038                 }
1039         }
1040 }
1041
1042 void LocalUser::SendText(const std::string& line)
1043 {
1044         Write(line);
1045 }
1046
1047 void RemoteUser::SendText(const std::string& line)
1048 {
1049         ServerInstance->PI->PushToClient(this, line);
1050 }
1051
1052 void FakeUser::SendText(const std::string& line)
1053 {
1054 }
1055
1056 void User::SendText(const char *text, ...)
1057 {
1058         std::string line;
1059         VAFORMAT(line, text, text);
1060         SendText(line);
1061 }
1062
1063 void User::SendText(const std::string& linePrefix, std::stringstream& textStream)
1064 {
1065         std::string line;
1066         std::string word;
1067         while (textStream >> word)
1068         {
1069                 size_t lineLength = linePrefix.length() + line.length() + word.length() + 3; // "\s\n\r"
1070                 if (lineLength > ServerInstance->Config->Limits.MaxLine)
1071                 {
1072                         SendText(linePrefix + line);
1073                         line.clear();
1074                 }
1075                 line += " " + word;
1076         }
1077         SendText(linePrefix + line);
1078 }
1079
1080 /* return 0 or 1 depending if users u and u2 share one or more common channels
1081  * (used by QUIT, NICK etc which arent channel specific notices)
1082  *
1083  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1084  * the first users channels then the second users channels within the outer loop,
1085  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1086  * all possible iterations). However this new function instead checks against the
1087  * channel's userlist in the inner loop which is a std::map<User*,User*>
1088  * and saves us time as we already know what pointer value we are after.
1089  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1090  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1091  */
1092 bool User::SharesChannelWith(User *other)
1093 {
1094         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1095                 return false;
1096
1097         /* Outer loop */
1098         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1099         {
1100                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1101                  * by replacing it with a map::find which *should* be more efficient
1102                  */
1103                 if ((*i)->HasUser(other))
1104                         return true;
1105         }
1106         return false;
1107 }
1108
1109 bool User::ChangeName(const char* gecos)
1110 {
1111         if (!this->fullname.compare(gecos))
1112                 return true;
1113
1114         if (IS_LOCAL(this))
1115         {
1116                 ModResult MOD_RESULT;
1117                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1118                 if (MOD_RESULT == MOD_RES_DENY)
1119                         return false;
1120                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1121         }
1122         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1123
1124         return true;
1125 }
1126
1127 void User::DoHostCycle(const std::string &quitline)
1128 {
1129         if (!ServerInstance->Config->CycleHosts)
1130                 return;
1131
1132         already_sent_t silent_id = ++LocalUser::already_sent_id;
1133         already_sent_t seen_id = ++LocalUser::already_sent_id;
1134
1135         UserChanList include_c(chans);
1136         std::map<User*,bool> exceptions;
1137
1138         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1139
1140         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1141         {
1142                 LocalUser* u = IS_LOCAL(i->first);
1143                 if (u && !u->quitting)
1144                 {
1145                         if (i->second)
1146                         {
1147                                 u->already_sent = seen_id;
1148                                 u->Write(quitline);
1149                         }
1150                         else
1151                         {
1152                                 u->already_sent = silent_id;
1153                         }
1154                 }
1155         }
1156         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1157         {
1158                 Channel* c = *v;
1159                 Membership* memb = c->GetUser(this);
1160                 const std::string joinline = ":" + GetFullHost() + " JOIN " + c->name;
1161                 std::string modeline;
1162
1163                 if (!memb->modes.empty())
1164                 {
1165                         modeline = ":" + (ServerInstance->Config->CycleHostsFromUser ? GetFullHost() : ServerInstance->Config->ServerName)
1166                                 + " MODE " + c->name + " +" + memb->modes;
1167
1168                         for (size_t i = 0; i < memb->modes.length(); i++)
1169                                 modeline.append(" ").append(nick);
1170                 }
1171
1172                 const UserMembList *ulist = c->GetUsers();
1173                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1174                 {
1175                         LocalUser* u = IS_LOCAL(i->first);
1176                         if (u == NULL || u == this)
1177                                 continue;
1178                         if (u->already_sent == silent_id)
1179                                 continue;
1180
1181                         if (u->already_sent != seen_id)
1182                         {
1183                                 u->Write(quitline);
1184                                 u->already_sent = seen_id;
1185                         }
1186                         u->Write(joinline);
1187                         if (!memb->modes.empty())
1188                                 u->Write(modeline);
1189                 }
1190         }
1191 }
1192
1193 bool User::ChangeDisplayedHost(const char* shost)
1194 {
1195         if (dhost == shost)
1196                 return true;
1197
1198         if (IS_LOCAL(this))
1199         {
1200                 ModResult MOD_RESULT;
1201                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1202                 if (MOD_RESULT == MOD_RES_DENY)
1203                         return false;
1204         }
1205
1206         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1207
1208         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1209
1210         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1211         this->dhost.assign(shost, 0, 64);
1212
1213         this->InvalidateCache();
1214
1215         this->DoHostCycle(quitstr);
1216
1217         if (IS_LOCAL(this))
1218                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1219
1220         return true;
1221 }
1222
1223 bool User::ChangeIdent(const char* newident)
1224 {
1225         if (this->ident == newident)
1226                 return true;
1227
1228         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1229
1230         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1231
1232         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax);
1233
1234         this->InvalidateCache();
1235
1236         this->DoHostCycle(quitstr);
1237
1238         return true;
1239 }
1240
1241 void User::SendAll(const char* command, const char* text, ...)
1242 {
1243         std::string textbuffer;
1244         VAFORMAT(textbuffer, text, text);
1245         const std::string message = ":" + this->GetFullHost() + " " + command + " $* :" + textbuffer;
1246
1247         for (LocalUserList::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1248         {
1249                 if ((*i)->registered == REG_ALL)
1250                         (*i)->Write(message);
1251         }
1252 }
1253
1254 /*
1255  * Sets a user's connection class.
1256  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1257  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1258  * then their ip will be taken as 'priority' anyway, so for example,
1259  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1260  */
1261 void LocalUser::SetClass(const std::string &explicit_name)
1262 {
1263         ConnectClass *found = NULL;
1264
1265         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1266
1267         if (!explicit_name.empty())
1268         {
1269                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1270                 {
1271                         ConnectClass* c = *i;
1272
1273                         if (explicit_name == c->name)
1274                         {
1275                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Explicitly set to %s", explicit_name.c_str());
1276                                 found = c;
1277                         }
1278                 }
1279         }
1280         else
1281         {
1282                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1283                 {
1284                         ConnectClass* c = *i;
1285                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Checking %s", c->GetName().c_str());
1286
1287                         ModResult MOD_RESULT;
1288                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1289                         if (MOD_RESULT == MOD_RES_DENY)
1290                                 continue;
1291                         if (MOD_RESULT == MOD_RES_ALLOW)
1292                         {
1293                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Class forced by module to %s", c->GetName().c_str());
1294                                 found = c;
1295                                 break;
1296                         }
1297
1298                         if (c->type == CC_NAMED)
1299                                 continue;
1300
1301                         bool regdone = (registered != REG_NONE);
1302                         if (c->config->getBool("registered", regdone) != regdone)
1303                                 continue;
1304
1305                         /* check if host matches.. */
1306                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1307                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1308                         {
1309                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "No host match (for %s)", c->GetHost().c_str());
1310                                 continue;
1311                         }
1312
1313                         /*
1314                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1315                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1316                          */
1317                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1318                         {
1319                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1320                                 continue;
1321                         }
1322
1323                         /* if it requires a port ... */
1324                         int port = c->config->getInt("port");
1325                         if (port)
1326                         {
1327                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Requires port (%d)", port);
1328
1329                                 /* and our port doesn't match, fail. */
1330                                 if (this->GetServerPort() != port)
1331                                         continue;
1332                         }
1333
1334                         if (regdone && !c->config->getString("password").empty())
1335                         {
1336                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1337                                 {
1338                                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Bad password, skipping");
1339                                         continue;
1340                                 }
1341                         }
1342
1343                         /* we stop at the first class that meets ALL critera. */
1344                         found = c;
1345                         break;
1346                 }
1347         }
1348
1349         /*
1350          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1351          */
1352         if (found)
1353         {
1354                 MyClass = found;
1355         }
1356 }
1357
1358 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1359  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1360  * then their ip will be taken as 'priority' anyway, so for example,
1361  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1362  */
1363 ConnectClass* LocalUser::GetClass()
1364 {
1365         return MyClass;
1366 }
1367
1368 ConnectClass* User::GetClass()
1369 {
1370         return NULL;
1371 }
1372
1373 void User::PurgeEmptyChannels()
1374 {
1375         // firstly decrement the count on each channel
1376         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1377         {
1378                 Channel* c = *f;
1379                 c->DelUser(this);
1380         }
1381
1382         this->UnOper();
1383 }
1384
1385 const std::string& FakeUser::GetFullHost()
1386 {
1387         if (!ServerInstance->Config->HideWhoisServer.empty())
1388                 return ServerInstance->Config->HideWhoisServer;
1389         return server;
1390 }
1391
1392 const std::string& FakeUser::GetFullRealHost()
1393 {
1394         if (!ServerInstance->Config->HideWhoisServer.empty())
1395                 return ServerInstance->Config->HideWhoisServer;
1396         return server;
1397 }
1398
1399 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1400         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1401         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1402         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0),
1403         limit(0), nouserdns(false)
1404 {
1405 }
1406
1407 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1408         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1409         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1410         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1411         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1412         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1413         limit(parent.limit), nouserdns(parent.nouserdns)
1414 {
1415 }
1416
1417 void ConnectClass::Update(const ConnectClass* src)
1418 {
1419         config = src->config;
1420         type = src->type;
1421         fakelag = src->fakelag;
1422         name = src->name;
1423         registration_timeout = src->registration_timeout;
1424         host = src->host;
1425         pingtime = src->pingtime;
1426         softsendqmax = src->softsendqmax;
1427         hardsendqmax = src->hardsendqmax;
1428         recvqmax = src->recvqmax;
1429         penaltythreshold = src->penaltythreshold;
1430         commandrate = src->commandrate;
1431         maxlocal = src->maxlocal;
1432         maxglobal = src->maxglobal;
1433         maxconnwarn = src->maxconnwarn;
1434         maxchans = src->maxchans;
1435         limit = src->limit;
1436         nouserdns = src->nouserdns;
1437 }