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 std::string User::ProcessNoticeMasks(const char *sm)
  35 {
  36         bool adding = true, oldadding = false;
  37         const char *c = sm;
  38         std::string output;
  39
  40         while (c && *c)
  41         {
  42                 switch (*c)
  43                 {
  44                         case '+':
  45                                 adding = true;
  46                         break;
  47                         case '-':
  48                                 adding = false;
  49                         break;
  50                         case '*':
  51                                 for (unsigned char d = 'a'; d <= 'z'; d++)
  52                                 {
  53                                         if (!ServerInstance->SNO->masks[d - 'a'].Description.empty())
  54                                         {
  55                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  56                                                 {
  57                                                         if ((oldadding != adding) || (!output.length()))
  58                                                                 output += (adding ? '+' : '-');
  59
  60                                                         this->SetNoticeMask(d, adding);
  61
  62                                                         output += d;
  63                                                 }
  64                                                 oldadding = adding;
  65                                                 char u = toupper(d);
  66                                                 if ((!IsNoticeMaskSet(u) && adding) || (IsNoticeMaskSet(u) && !adding))
  67                                                 {
  68                                                         if ((oldadding != adding) || (!output.length()))
  69                                                                 output += (adding ? '+' : '-');
  70
  71                                                         this->SetNoticeMask(u, adding);
  72
  73                                                         output += u;
  74                                                 }
  75                                                 oldadding = adding;
  76                                         }
  77                                 }
  78                         break;
  79                         default:
  80                                 if (isalpha(*c))
  81                                 {
  82                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  83                                         {
  84                                                 if ((oldadding != adding) || (!output.length()))
  85                                                         output += (adding ? '+' : '-');
  86
  87                                                 this->SetNoticeMask(*c, adding);
  88
  89                                                 output += *c;
  90                                         }
  91                                 }
  92                                 else
  93                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  94
  95                                 oldadding = adding;
  96                         break;
  97                 }
  98
  99                 c++;
 100         }
 101
 102         std::string s = this->FormatNoticeMasks();
 103         if (s.length() == 0)
 104         {
 105                 this->modes[UM_SNOMASK] = false;
 106         }
 107
 108         return output;
 109 }
 110
 111 bool User::IsNoticeMaskSet(unsigned char sm)
 112 {
 113         if (!isalpha(sm))
 114                 return false;
 115         return (snomasks[sm-65]);
 116 }
 117
 118 void User::SetNoticeMask(unsigned char sm, bool value)
 119 {
 120         if (!isalpha(sm))
 121                 return;
 122         snomasks[sm-65] = value;
 123 }
 124
 125 const char* User::FormatNoticeMasks()
 126 {
 127         static char data[MAXBUF];
 128         int offset = 0;
 129
 130         for (int n = 0; n < 64; n++)
 131         {
 132                 if (snomasks[n])
 133                         data[offset++] = n+65;
 134         }
 135
 136         data[offset] = 0;
 137         return data;
 138 }
 139
 140 bool User::IsModeSet(unsigned char m)
 141 {
 142         if (!isalpha(m))
 143                 return false;
 144         return (modes[m-65]);
 145 }
 146
 147 void User::SetMode(unsigned char m, bool value)
 148 {
 149         if (!isalpha(m))
 150                 return;
 151         modes[m-65] = value;
 152 }
 153
 154 const char* User::FormatModes(bool showparameters)
 155 {
 156         static std::string data;
 157         std::string params;
 158         data.clear();
 159
 160         for (unsigned char n = 0; n < 64; n++)
 161         {
 162                 if (modes[n])
 163                 {
 164                         data.push_back(n + 65);
 165                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 166                         if (showparameters && mh && mh->GetNumParams(true))
 167                         {
 168                                 std::string p = mh->GetUserParameter(this);
 169                                 if (p.length())
 170                                         params.append(" ").append(p);
 171                         }
 172                 }
 173         }
 174         data += params;
 175         return data.c_str();
 176 }
 177
 178 User::User(const std::string &uid, const std::string& sid, int type)
 179         : uuid(uid), server(sid), usertype(type)
 180 {
 181         age = ServerInstance->Time();
 182         signon = 0;
 183         registered = 0;
 184         quietquit = quitting = false;
 185         client_sa.sa.sa_family = AF_UNSPEC;
 186
 187         ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New UUID for user: %s", uuid.c_str());
 188
 189         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 190         if (finduuid == ServerInstance->Users->uuidlist->end())
 191                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 192         else
 193                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 194 }
 195
 196 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 197         : User(ServerInstance->UIDGen.GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 198         localuseriter(ServerInstance->Users->local_users.end()),
 199         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 200         already_sent(0)
 201 {
 202         exempt = quitting_sendq = false;
 203         idle_lastmsg = 0;
 204         ident = "unknown";
 205         lastping = 0;
 206         eh.SetFd(myfd);
 207         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 208         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 209         dhost = host = GetIPString();
 210 }
 211
 212 User::~User()
 213 {
 214         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 215                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 216 }
 217
 218 const std::string& User::MakeHost()
 219 {
 220         if (!this->cached_makehost.empty())
 221                 return this->cached_makehost;
 222
 223         char nhost[MAXBUF];
 224         /* This is much faster than snprintf */
 225         char* t = nhost;
 226         for(const char* n = ident.c_str(); *n; n++)
 227                 *t++ = *n;
 228         *t++ = '@';
 229         for(const char* n = host.c_str(); *n; n++)
 230                 *t++ = *n;
 231         *t = 0;
 232
 233         this->cached_makehost.assign(nhost);
 234
 235         return this->cached_makehost;
 236 }
 237
 238 const std::string& User::MakeHostIP()
 239 {
 240         if (!this->cached_hostip.empty())
 241                 return this->cached_hostip;
 242
 243         char ihost[MAXBUF];
 244         /* This is much faster than snprintf */
 245         char* t = ihost;
 246         for(const char* n = ident.c_str(); *n; n++)
 247                 *t++ = *n;
 248         *t++ = '@';
 249         for(const char* n = this->GetIPString().c_str(); *n; n++)
 250                 *t++ = *n;
 251         *t = 0;
 252
 253         this->cached_hostip = ihost;
 254
 255         return this->cached_hostip;
 256 }
 257
 258 const std::string& User::GetFullHost()
 259 {
 260         if (!this->cached_fullhost.empty())
 261                 return this->cached_fullhost;
 262
 263         char result[MAXBUF];
 264         char* t = result;
 265         for(const char* n = nick.c_str(); *n; n++)
 266                 *t++ = *n;
 267         *t++ = '!';
 268         for(const char* n = ident.c_str(); *n; n++)
 269                 *t++ = *n;
 270         *t++ = '@';
 271         for(const char* n = dhost.c_str(); *n; n++)
 272                 *t++ = *n;
 273         *t = 0;
 274
 275         this->cached_fullhost = result;
 276
 277         return this->cached_fullhost;
 278 }
 279
 280 char* User::MakeWildHost()
 281 {
 282         static char nresult[MAXBUF];
 283         char* t = nresult;
 284         *t++ = '*';     *t++ = '!';
 285         *t++ = '*';     *t++ = '@';
 286         for(const char* n = dhost.c_str(); *n; n++)
 287                 *t++ = *n;
 288         *t = 0;
 289         return nresult;
 290 }
 291
 292 const std::string& User::GetFullRealHost()
 293 {
 294         if (!this->cached_fullrealhost.empty())
 295                 return this->cached_fullrealhost;
 296
 297         char fresult[MAXBUF];
 298         char* t = fresult;
 299         for(const char* n = nick.c_str(); *n; n++)
 300                 *t++ = *n;
 301         *t++ = '!';
 302         for(const char* n = ident.c_str(); *n; n++)
 303                 *t++ = *n;
 304         *t++ = '@';
 305         for(const char* n = host.c_str(); *n; n++)
 306                 *t++ = *n;
 307         *t = 0;
 308
 309         this->cached_fullrealhost = fresult;
 310
 311         return this->cached_fullrealhost;
 312 }
 313
 314 InviteList& LocalUser::GetInviteList()
 315 {
 316         RemoveExpiredInvites();
 317         return invites;
 318 }
 319
 320 bool LocalUser::RemoveInvite(Channel* chan)
 321 {
 322         Invitation* inv = Invitation::Find(chan, this);
 323         if (inv)
 324         {
 325                 inv->cull();
 326                 delete inv;
 327                 return true;
 328         }
 329         return false;
 330 }
 331
 332 void LocalUser::RemoveExpiredInvites()
 333 {
 334         Invitation::Find(NULL, this);
 335 }
 336
 337 bool User::HasModePermission(unsigned char, ModeType)
 338 {
 339         return true;
 340 }
 341
 342 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 343 {
 344         if (!this->IsOper())
 345                 return false;
 346
 347         if (mode < 'A' || mode > ('A' + 64)) return false;
 348
 349         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 350
 351 }
 352 /*
 353  * users on remote servers can completely bypass all permissions based checks.
 354  * This prevents desyncs when one server has different type/class tags to another.
 355  * That having been said, this does open things up to the possibility of source changes
 356  * allowing remote kills, etc - but if they have access to the src, they most likely have
 357  * access to the conf - so it's an end to a means either way.
 358  */
 359 bool User::HasPermission(const std::string&)
 360 {
 361         return true;
 362 }
 363
 364 bool LocalUser::HasPermission(const std::string &command)
 365 {
 366         // are they even an oper at all?
 367         if (!this->IsOper())
 368         {
 369                 return false;
 370         }
 371
 372         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 373                 return true;
 374         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 375                 return true;
 376
 377         return false;
 378 }
 379
 380 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 381 {
 382         return true;
 383 }
 384
 385 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 386 {
 387         if (!this->IsOper())
 388         {
 389                 if (noisy)
 390                         this->WriteNotice("You are not an oper");
 391                 return false;
 392         }
 393
 394         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 395         {
 396                 return true;
 397         }
 398         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 399         {
 400                 return true;
 401         }
 402
 403         if (noisy)
 404                 this->WriteNotice("Oper type " + oper->name + " does not have access to priv " + privstr);
 405
 406         return false;
 407 }
 408
 409 void UserIOHandler::OnDataReady()
 410 {
 411         if (user->quitting)
 412                 return;
 413
 414         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 415         {
 416                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 417                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 418                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 419                 return;
 420         }
 421         unsigned long sendqmax = ULONG_MAX;
 422         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 423                 sendqmax = user->MyClass->GetSendqSoftMax();
 424         unsigned long penaltymax = ULONG_MAX;
 425         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 426                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 427
 428         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 429         {
 430                 std::string line;
 431                 line.reserve(ServerInstance->Config->Limits.MaxLine);
 432                 std::string::size_type qpos = 0;
 433                 while (qpos < recvq.length())
 434                 {
 435                         char c = recvq[qpos++];
 436                         switch (c)
 437                         {
 438                         case '\0':
 439                                 c = ' ';
 440                                 break;
 441                         case '\r':
 442                                 continue;
 443                         case '\n':
 444                                 goto eol_found;
 445                         }
 446                         if (line.length() < MAXBUF - 2)
 447                                 line.push_back(c);
 448                 }
 449                 // if we got here, the recvq ran out before we found a newline
 450                 return;
 451 eol_found:
 452                 // just found a newline. Terminate the string, and pull it out of recvq
 453                 recvq = recvq.substr(qpos);
 454
 455                 // TODO should this be moved to when it was inserted in recvq?
 456                 ServerInstance->stats->statsRecv += qpos;
 457                 user->bytes_in += qpos;
 458                 user->cmds_in++;
 459
 460                 ServerInstance->Parser->ProcessBuffer(line, user);
 461                 if (user->quitting)
 462                         return;
 463         }
 464         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 465                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 466 }
 467
 468 void UserIOHandler::AddWriteBuf(const std::string &data)
 469 {
 470         if (user->quitting_sendq)
 471                 return;
 472         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 473                 !user->HasPrivPermission("users/flood/increased-buffers"))
 474         {
 475                 user->quitting_sendq = true;
 476                 ServerInstance->GlobalCulls.AddSQItem(user);
 477                 return;
 478         }
 479
 480         // We still want to append data to the sendq of a quitting user,
 481         // e.g. their ERROR message that says 'closing link'
 482
 483         WriteData(data);
 484 }
 485
 486 void UserIOHandler::OnError(BufferedSocketError)
 487 {
 488         ServerInstance->Users->QuitUser(user, getError());
 489 }
 490
 491 CullResult User::cull()
 492 {
 493         if (!quitting)
 494                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 495         PurgeEmptyChannels();
 496
 497         if (client_sa.sa.sa_family != AF_UNSPEC)
 498                 ServerInstance->Users->RemoveCloneCounts(this);
 499
 500         return Extensible::cull();
 501 }
 502
 503 CullResult LocalUser::cull()
 504 {
 505         // The iterator is initialized to local_users.end() in the constructor. It is
 506         // overwritten in UserManager::AddUser() with the real iterator so this check
 507         // is only a precaution currently.
 508         if (localuseriter != ServerInstance->Users->local_users.end())
 509         {
 510                 ServerInstance->Users->local_count--;
 511                 ServerInstance->Users->local_users.erase(localuseriter);
 512         }
 513         else
 514                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: LocalUserIter does not point to a valid entry for " + this->nick);
 515
 516         ClearInvites();
 517         eh.cull();
 518         return User::cull();
 519 }
 520
 521 CullResult FakeUser::cull()
 522 {
 523         // Fake users don't quit, they just get culled.
 524         quitting = true;
 525         ServerInstance->Users->clientlist->erase(nick);
 526         ServerInstance->Users->uuidlist->erase(uuid);
 527         return User::cull();
 528 }
 529
 530 void User::Oper(OperInfo* info)
 531 {
 532         if (this->IsModeSet('o'))
 533                 this->UnOper();
 534
 535         this->modes[UM_OPERATOR] = 1;
 536         this->oper = info;
 537         this->WriteServ("MODE %s :+o", this->nick.c_str());
 538         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 539
 540         std::string opername;
 541         if (info->oper_block)
 542                 opername = info->oper_block->getString("name");
 543
 544         if (IS_LOCAL(this))
 545         {
 546                 LocalUser* l = IS_LOCAL(this);
 547                 std::string vhost = oper->getConfig("vhost");
 548                 if (!vhost.empty())
 549                         l->ChangeDisplayedHost(vhost.c_str());
 550                 std::string opClass = oper->getConfig("class");
 551                 if (!opClass.empty())
 552                         l->SetClass(opClass);
 553         }
 554
 555         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 556                 nick.c_str(), ident.c_str(), host.c_str(), oper->name.c_str(), opername.c_str());
 557         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->name.c_str());
 558
 559         ServerInstance->Logs->Log("OPER", LOG_DEFAULT, "%s opered as type: %s", GetFullRealHost().c_str(), oper->name.c_str());
 560         ServerInstance->Users->all_opers.push_back(this);
 561
 562         // Expand permissions from config for faster lookup
 563         if (IS_LOCAL(this))
 564                 oper->init();
 565
 566         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 567 }
 568
 569 void OperInfo::init()
 570 {
 571         AllowedOperCommands.clear();
 572         AllowedPrivs.clear();
 573         AllowedUserModes.reset();
 574         AllowedChanModes.reset();
 575         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 576
 577         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 578         {
 579                 ConfigTag* tag = *iter;
 580                 std::string mycmd, mypriv;
 581                 /* Process commands */
 582                 irc::spacesepstream CommandList(tag->getString("commands"));
 583                 while (CommandList.GetToken(mycmd))
 584                 {
 585                         AllowedOperCommands.insert(mycmd);
 586                 }
 587
 588                 irc::spacesepstream PrivList(tag->getString("privs"));
 589                 while (PrivList.GetToken(mypriv))
 590                 {
 591                         AllowedPrivs.insert(mypriv);
 592                 }
 593
 594                 std::string modes = tag->getString("usermodes");
 595                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 596                 {
 597                         if (*c == '*')
 598                         {
 599                                 this->AllowedUserModes.set();
 600                         }
 601                         else if (*c >= 'A' && *c < 'z')
 602                         {
 603                                 this->AllowedUserModes[*c - 'A'] = true;
 604                         }
 605                 }
 606
 607                 modes = tag->getString("chanmodes");
 608                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 609                 {
 610                         if (*c == '*')
 611                         {
 612                                 this->AllowedChanModes.set();
 613                         }
 614                         else if (*c >= 'A' && *c < 'z')
 615                         {
 616                                 this->AllowedChanModes[*c - 'A'] = true;
 617                         }
 618                 }
 619         }
 620 }
 621
 622 void User::UnOper()
 623 {
 624         if (!this->IsOper())
 625                 return;
 626
 627         /*
 628          * unset their oper type (what IS_OPER checks).
 629          * note, order is important - this must come before modes as -o attempts
 630          * to call UnOper. -- w00t
 631          */
 632         oper = NULL;
 633
 634
 635         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 636         std::string moderemove("-");
 637
 638         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 639         {
 640                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 641                 if (mh && mh->NeedsOper())
 642                         moderemove += letter;
 643         }
 644
 645
 646         std::vector<std::string> parameters;
 647         parameters.push_back(this->nick);
 648         parameters.push_back(moderemove);
 649
 650         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 651
 652         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 653         ServerInstance->Users->all_opers.remove(this);
 654
 655         this->modes[UM_OPERATOR] = 0;
 656 }
 657
 658 /*
 659  * Check class restrictions
 660  */
 661 void LocalUser::CheckClass()
 662 {
 663         ConnectClass* a = this->MyClass;
 664
 665         if (!a)
 666         {
 667                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 668                 return;
 669         }
 670         else if (a->type == CC_DENY)
 671         {
 672                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 673                 return;
 674         }
 675         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 676         {
 677                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 678                 if (a->maxconnwarn)
 679                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString().c_str());
 680                 return;
 681         }
 682         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 683         {
 684                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 685                 if (a->maxconnwarn)
 686                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString().c_str());
 687                 return;
 688         }
 689
 690         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 691 }
 692
 693 bool LocalUser::CheckLines(bool doZline)
 694 {
 695         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 696
 697         if (!this->exempt)
 698         {
 699                 for (int n = 0; check[n]; ++n)
 700                 {
 701                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 702
 703                         if (r)
 704                         {
 705                                 r->Apply(this);
 706                                 return true;
 707                         }
 708                 }
 709         }
 710
 711         return false;
 712 }
 713
 714 void LocalUser::FullConnect()
 715 {
 716         ServerInstance->stats->statsConnects++;
 717         this->idle_lastmsg = ServerInstance->Time();
 718
 719         /*
 720          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 721          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 722          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 723          * Don't remove this! -- w00t
 724          */
 725         MyClass = NULL;
 726         SetClass();
 727         CheckClass();
 728         CheckLines();
 729
 730         if (quitting)
 731                 return;
 732
 733         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str());
 734         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version %s",this->nick.c_str(),ServerInstance->Config->ServerName.c_str(),BRANCH);
 735         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 736
 737         const std::string& modelist = ServerInstance->Modes->GetModeListFor004Numeric();
 738         this->WriteNumeric(RPL_SERVERVERSION, "%s %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), BRANCH, modelist.c_str());
 739
 740         ServerInstance->ISupport.SendTo(this);
 741         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 742
 743         /* Now registered */
 744         if (ServerInstance->Users->unregistered_count)
 745                 ServerInstance->Users->unregistered_count--;
 746
 747         /* Trigger MOTD and LUSERS output, give modules a chance too */
 748         ModResult MOD_RESULT;
 749         std::string command("LUSERS");
 750         std::vector<std::string> parameters;
 751         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 752         if (!MOD_RESULT)
 753                 ServerInstance->Parser->CallHandler(command, parameters, this);
 754
 755         MOD_RESULT = MOD_RES_PASSTHRU;
 756         command = "MOTD";
 757         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 758         if (!MOD_RESULT)
 759                 ServerInstance->Parser->CallHandler(command, parameters, this);
 760
 761         if (ServerInstance->Config->RawLog)
 762                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 763
 764         /*
 765          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 766          * for a user that doesn't exist yet.
 767          */
 768         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 769
 770         this->registered = REG_ALL;
 771
 772         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 773
 774         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d (class %s): %s (%s) [%s]",
 775                 this->GetServerPort(), this->MyClass->name.c_str(), GetFullRealHost().c_str(), this->GetIPString().c_str(), this->fullname.c_str());
 776         ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Adding NEGATIVE hit for " + this->GetIPString());
 777         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 778         // reset the flood penalty (which could have been raised due to things like auto +x)
 779         CommandFloodPenalty = 0;
 780 }
 781
 782 void User::InvalidateCache()
 783 {
 784         /* Invalidate cache */
 785         cached_fullhost.clear();
 786         cached_hostip.clear();
 787         cached_makehost.clear();
 788         cached_fullrealhost.clear();
 789 }
 790
 791 bool User::ChangeNick(const std::string& newnick, bool force)
 792 {
 793         if (quitting)
 794         {
 795                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Attempted to change nick of a quitting user: " + this->nick);
 796                 return false;
 797         }
 798
 799         if (!force)
 800         {
 801                 ModResult MOD_RESULT;
 802                 FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 803
 804                 if (MOD_RESULT == MOD_RES_DENY)
 805                 {
 806                         ServerInstance->stats->statsCollisions++;
 807                         return false;
 808                 }
 809         }
 810
 811         if (assign(newnick) == assign(nick))
 812         {
 813                 // case change, don't need to check Q:lines and such
 814                 // and, if it's identical including case, we can leave right now
 815                 if (newnick == nick)
 816                         return true;
 817         }
 818         else
 819         {
 820                 /*
 821                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 822                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 823                  * Thanks Kein for finding this. -- w00t
 824                  *
 825                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 826                  *              -- w00t
 827                  */
 828                 if (IS_LOCAL(this) && !force)
 829                 {
 830                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 831                         if (mq)
 832                         {
 833                                 if (this->registered == REG_ALL)
 834                                 {
 835                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s: %s",
 836                                                 newnick.c_str(), GetFullRealHost().c_str(), mq->reason.c_str());
 837                                 }
 838                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 839                                 return false;
 840                         }
 841
 842                         if (ServerInstance->Config->RestrictBannedUsers)
 843                         {
 844                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 845                                 {
 846                                         Channel *chan = *i;
 847                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 848                                         {
 849                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 850                                                 return false;
 851                                         }
 852                                 }
 853                         }
 854                 }
 855
 856                 /*
 857                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 858                  * then we have a potential collide. Check whether someone else is camping on the nick
 859                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 860                  * camper to their UID, and allow the incoming nick change.
 861                  *
 862                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 863                  * because the nick is already (rightfully) in use. -- w00t
 864                  */
 865                 User* InUse = ServerInstance->FindNickOnly(newnick);
 866                 if (InUse && (InUse != this))
 867                 {
 868                         if (InUse->registered != REG_ALL)
 869                         {
 870                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 871                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 872                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 873
 874                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 875                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 876
 877                                 InUse->nick = InUse->uuid;
 878                                 InUse->InvalidateCache();
 879                                 InUse->registered &= ~REG_NICK;
 880                         }
 881                         else
 882                         {
 883                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 884                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 885                                 return false;
 886                         }
 887                 }
 888         }
 889
 890         if (this->registered == REG_ALL)
 891                 this->WriteCommon("NICK %s",newnick.c_str());
 892         std::string oldnick = nick;
 893         nick = newnick;
 894
 895         InvalidateCache();
 896         ServerInstance->Users->clientlist->erase(oldnick);
 897         (*(ServerInstance->Users->clientlist))[newnick] = this;
 898
 899         if (registered == REG_ALL)
 900                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 901
 902         return true;
 903 }
 904
 905 int LocalUser::GetServerPort()
 906 {
 907         switch (this->server_sa.sa.sa_family)
 908         {
 909                 case AF_INET6:
 910                         return htons(this->server_sa.in6.sin6_port);
 911                 case AF_INET:
 912                         return htons(this->server_sa.in4.sin_port);
 913         }
 914         return 0;
 915 }
 916
 917 const std::string& User::GetIPString()
 918 {
 919         int port;
 920         if (cachedip.empty())
 921         {
 922                 irc::sockets::satoap(client_sa, cachedip, port);
 923                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 924                 if (cachedip[0] == ':')
 925                         cachedip.insert(0,1,'0');
 926         }
 927
 928         return cachedip;
 929 }
 930
 931 irc::sockets::cidr_mask User::GetCIDRMask()
 932 {
 933         int range = 0;
 934         switch (client_sa.sa.sa_family)
 935         {
 936                 case AF_INET6:
 937                         range = ServerInstance->Config->c_ipv6_range;
 938                         break;
 939                 case AF_INET:
 940                         range = ServerInstance->Config->c_ipv4_range;
 941                         break;
 942         }
 943         return irc::sockets::cidr_mask(client_sa, range);
 944 }
 945
 946 bool User::SetClientIP(const char* sip, bool recheck_eline)
 947 {
 948         cachedip.clear();
 949         cached_hostip.clear();
 950         return irc::sockets::aptosa(sip, 0, client_sa);
 951 }
 952
 953 void User::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 954 {
 955         cachedip.clear();
 956         cached_hostip.clear();
 957         memcpy(&client_sa, &sa, sizeof(irc::sockets::sockaddrs));
 958 }
 959
 960 bool LocalUser::SetClientIP(const char* sip, bool recheck_eline)
 961 {
 962         irc::sockets::sockaddrs sa;
 963         if (!irc::sockets::aptosa(sip, 0, sa))
 964                 // Invalid
 965                 return false;
 966
 967         LocalUser::SetClientIP(sa, recheck_eline);
 968         return true;
 969 }
 970
 971 void LocalUser::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 972 {
 973         if (sa != client_sa)
 974         {
 975                 User::SetClientIP(sa);
 976                 if (recheck_eline)
 977                         this->exempt = (ServerInstance->XLines->MatchesLine("E", this) != NULL);
 978
 979                 FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(this));
 980         }
 981 }
 982
 983 static std::string wide_newline("\r\n");
 984
 985 void User::Write(const std::string& text)
 986 {
 987 }
 988
 989 void User::Write(const char *text, ...)
 990 {
 991 }
 992
 993 void LocalUser::Write(const std::string& text)
 994 {
 995         if (!ServerInstance->SE->BoundsCheckFd(&eh))
 996                 return;
 997
 998         if (text.length() > MAXBUF - 2)
 999         {
1000                 // this should happen rarely or never. Crop the string at 512 and try again.
1001                 std::string try_again = text.substr(0, MAXBUF - 2);
1002                 Write(try_again);
1003                 return;
1004         }
1005
1006         ServerInstance->Logs->Log("USEROUTPUT", LOG_RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
1007
1008         eh.AddWriteBuf(text);
1009         eh.AddWriteBuf(wide_newline);
1010
1011         ServerInstance->stats->statsSent += text.length() + 2;
1012         this->bytes_out += text.length() + 2;
1013         this->cmds_out++;
1014 }
1015
1016 /** Write()
1017  */
1018 void LocalUser::Write(const char *text, ...)
1019 {
1020         std::string textbuffer;
1021         VAFORMAT(textbuffer, text, text);
1022         this->Write(textbuffer);
1023 }
1024
1025 void User::WriteServ(const std::string& text)
1026 {
1027         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1028 }
1029
1030 /** WriteServ()
1031  *  Same as Write(), except `text' is prefixed with `:server.name '.
1032  */
1033 void User::WriteServ(const char* text, ...)
1034 {
1035         std::string textbuffer;
1036         VAFORMAT(textbuffer, text, text);
1037         this->WriteServ(textbuffer);
1038 }
1039
1040 void User::WriteNotice(const std::string& text)
1041 {
1042         this->WriteServ("NOTICE " + (this->registered == REG_ALL ? this->nick : "*") + " :" + text);
1043 }
1044
1045 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1046 {
1047         std::string textbuffer;
1048         VAFORMAT(textbuffer, text, text);
1049         this->WriteNumeric(numeric, textbuffer);
1050 }
1051
1052 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1053 {
1054         char textbuffer[MAXBUF];
1055         ModResult MOD_RESULT;
1056
1057         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1058
1059         if (MOD_RESULT == MOD_RES_DENY)
1060                 return;
1061
1062         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1063         this->Write(std::string(textbuffer));
1064 }
1065
1066 void User::WriteFrom(User *user, const std::string &text)
1067 {
1068         const std::string message = ":" + user->GetFullHost() + " " + text;
1069         this->Write(message);
1070 }
1071
1072
1073 /* write text from an originating user to originating user */
1074
1075 void User::WriteFrom(User *user, const char* text, ...)
1076 {
1077         std::string textbuffer;
1078         VAFORMAT(textbuffer, text, text);
1079         this->WriteFrom(user, textbuffer);
1080 }
1081
1082
1083 /* write text to an destination user from a source user (e.g. user privmsg) */
1084
1085 void User::WriteTo(User *dest, const char *data, ...)
1086 {
1087         std::string textbuffer;
1088         VAFORMAT(textbuffer, data, data);
1089         this->WriteTo(dest, textbuffer);
1090 }
1091
1092 void User::WriteTo(User *dest, const std::string &data)
1093 {
1094         dest->WriteFrom(this, data);
1095 }
1096
1097 void User::WriteCommon(const char* text, ...)
1098 {
1099         if (this->registered != REG_ALL || quitting)
1100                 return;
1101
1102         std::string textbuffer;
1103         VAFORMAT(textbuffer, text, text);
1104         textbuffer = ":" + this->GetFullHost() + " " + textbuffer;
1105         this->WriteCommonRaw(textbuffer, true);
1106 }
1107
1108 void User::WriteCommonExcept(const char* text, ...)
1109 {
1110         if (this->registered != REG_ALL || quitting)
1111                 return;
1112
1113         std::string textbuffer;
1114         VAFORMAT(textbuffer, text, text);
1115         textbuffer = ":" + this->GetFullHost() + " " + textbuffer;
1116         this->WriteCommonRaw(textbuffer, false);
1117 }
1118
1119 void User::WriteCommonRaw(const std::string &line, bool include_self)
1120 {
1121         if (this->registered != REG_ALL || quitting)
1122                 return;
1123
1124         LocalUser::already_sent_id++;
1125
1126         UserChanList include_c(chans);
1127         std::map<User*,bool> exceptions;
1128
1129         exceptions[this] = include_self;
1130
1131         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1132
1133         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1134         {
1135                 LocalUser* u = IS_LOCAL(i->first);
1136                 if (u && !u->quitting)
1137                 {
1138                         u->already_sent = LocalUser::already_sent_id;
1139                         if (i->second)
1140                                 u->Write(line);
1141                 }
1142         }
1143         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1144         {
1145                 Channel* c = *v;
1146                 const UserMembList* ulist = c->GetUsers();
1147                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1148                 {
1149                         LocalUser* u = IS_LOCAL(i->first);
1150                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1151                         {
1152                                 u->already_sent = LocalUser::already_sent_id;
1153                                 u->Write(line);
1154                         }
1155                 }
1156         }
1157 }
1158
1159 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1160 {
1161         if (this->registered != REG_ALL)
1162                 return;
1163
1164         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1165
1166         const std::string normalMessage = ":" + this->GetFullHost() + " QUIT :" + normal_text;
1167         const std::string operMessage = ":" + this->GetFullHost() + " QUIT :" + oper_text;
1168
1169         UserChanList include_c(chans);
1170         std::map<User*,bool> exceptions;
1171
1172         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1173
1174         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1175         {
1176                 LocalUser* u = IS_LOCAL(i->first);
1177                 if (u && !u->quitting)
1178                 {
1179                         u->already_sent = uniq_id;
1180                         if (i->second)
1181                                 u->Write(u->IsOper() ? operMessage : normalMessage);
1182                 }
1183         }
1184         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1185         {
1186                 const UserMembList* ulist = (*v)->GetUsers();
1187                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1188                 {
1189                         LocalUser* u = IS_LOCAL(i->first);
1190                         if (u && !u->quitting && (u->already_sent != uniq_id))
1191                         {
1192                                 u->already_sent = uniq_id;
1193                                 u->Write(u->IsOper() ? operMessage : normalMessage);
1194                         }
1195                 }
1196         }
1197 }
1198
1199 void LocalUser::SendText(const std::string& line)
1200 {
1201         Write(line);
1202 }
1203
1204 void RemoteUser::SendText(const std::string& line)
1205 {
1206         ServerInstance->PI->PushToClient(this, line);
1207 }
1208
1209 void FakeUser::SendText(const std::string& line)
1210 {
1211 }
1212
1213 void User::SendText(const char *text, ...)
1214 {
1215         std::string line;
1216         VAFORMAT(line, text, text);
1217         SendText(line);
1218 }
1219
1220 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1221 {
1222         char line[MAXBUF];
1223         int start_pos = LinePrefix.length();
1224         int pos = start_pos;
1225         memcpy(line, LinePrefix.data(), pos);
1226         std::string Word;
1227         while (TextStream >> Word)
1228         {
1229                 int len = Word.length();
1230                 if (pos + len + 12 > MAXBUF)
1231                 {
1232                         line[pos] = '\0';
1233                         SendText(std::string(line));
1234                         pos = start_pos;
1235                 }
1236                 line[pos] = ' ';
1237                 memcpy(line + pos + 1, Word.data(), len);
1238                 pos += len + 1;
1239         }
1240         line[pos] = '\0';
1241         SendText(std::string(line));
1242 }
1243
1244 /* return 0 or 1 depending if users u and u2 share one or more common channels
1245  * (used by QUIT, NICK etc which arent channel specific notices)
1246  *
1247  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1248  * the first users channels then the second users channels within the outer loop,
1249  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1250  * all possible iterations). However this new function instead checks against the
1251  * channel's userlist in the inner loop which is a std::map<User*,User*>
1252  * and saves us time as we already know what pointer value we are after.
1253  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1254  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1255  */
1256 bool User::SharesChannelWith(User *other)
1257 {
1258         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1259                 return false;
1260
1261         /* Outer loop */
1262         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1263         {
1264                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1265                  * by replacing it with a map::find which *should* be more efficient
1266                  */
1267                 if ((*i)->HasUser(other))
1268                         return true;
1269         }
1270         return false;
1271 }
1272
1273 bool User::ChangeName(const char* gecos)
1274 {
1275         if (!this->fullname.compare(gecos))
1276                 return true;
1277
1278         if (IS_LOCAL(this))
1279         {
1280                 ModResult MOD_RESULT;
1281                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1282                 if (MOD_RESULT == MOD_RES_DENY)
1283                         return false;
1284                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1285         }
1286         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1287
1288         return true;
1289 }
1290
1291 void User::DoHostCycle(const std::string &quitline)
1292 {
1293         if (!ServerInstance->Config->CycleHosts)
1294                 return;
1295
1296         already_sent_t silent_id = ++LocalUser::already_sent_id;
1297         already_sent_t seen_id = ++LocalUser::already_sent_id;
1298
1299         UserChanList include_c(chans);
1300         std::map<User*,bool> exceptions;
1301
1302         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1303
1304         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1305         {
1306                 LocalUser* u = IS_LOCAL(i->first);
1307                 if (u && !u->quitting)
1308                 {
1309                         if (i->second)
1310                         {
1311                                 u->already_sent = seen_id;
1312                                 u->Write(quitline);
1313                         }
1314                         else
1315                         {
1316                                 u->already_sent = silent_id;
1317                         }
1318                 }
1319         }
1320         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1321         {
1322                 Channel* c = *v;
1323                 Membership* memb = c->GetUser(this);
1324                 const std::string joinline = ":" + GetFullHost() + " JOIN " + c->name;
1325                 std::string modeline;
1326
1327                 if (!memb->modes.empty())
1328                 {
1329                         modeline = ":" + (ServerInstance->Config->CycleHostsFromUser ? GetFullHost() : ServerInstance->Config->ServerName)
1330                                 + " MODE " + c->name + " +" + memb->modes;
1331
1332                         for (size_t i = 0; i < memb->modes.length(); i++)
1333                                 modeline.append(" ").append(nick);
1334                 }
1335
1336                 const UserMembList *ulist = c->GetUsers();
1337                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1338                 {
1339                         LocalUser* u = IS_LOCAL(i->first);
1340                         if (u == NULL || u == this)
1341                                 continue;
1342                         if (u->already_sent == silent_id)
1343                                 continue;
1344
1345                         if (u->already_sent != seen_id)
1346                         {
1347                                 u->Write(quitline);
1348                                 u->already_sent = seen_id;
1349                         }
1350                         u->Write(joinline);
1351                         if (!memb->modes.empty())
1352                                 u->Write(modeline);
1353                 }
1354         }
1355 }
1356
1357 bool User::ChangeDisplayedHost(const char* shost)
1358 {
1359         if (dhost == shost)
1360                 return true;
1361
1362         if (IS_LOCAL(this))
1363         {
1364                 ModResult MOD_RESULT;
1365                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1366                 if (MOD_RESULT == MOD_RES_DENY)
1367                         return false;
1368         }
1369
1370         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1371
1372         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1373
1374         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1375         this->dhost.assign(shost, 0, 64);
1376
1377         this->InvalidateCache();
1378
1379         this->DoHostCycle(quitstr);
1380
1381         if (IS_LOCAL(this))
1382                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1383
1384         return true;
1385 }
1386
1387 bool User::ChangeIdent(const char* newident)
1388 {
1389         if (this->ident == newident)
1390                 return true;
1391
1392         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1393
1394         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1395
1396         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax);
1397
1398         this->InvalidateCache();
1399
1400         this->DoHostCycle(quitstr);
1401
1402         return true;
1403 }
1404
1405 void User::SendAll(const char* command, const char* text, ...)
1406 {
1407         std::string textbuffer;
1408         VAFORMAT(textbuffer, text, text);
1409         const std::string message = ":" + this->GetFullHost() + " " + command + " $* :" + textbuffer;
1410
1411         for (LocalUserList::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1412         {
1413                 if ((*i)->registered == REG_ALL)
1414                         (*i)->Write(message);
1415         }
1416 }
1417
1418 /*
1419  * Sets a user's connection class.
1420  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1421  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1422  * then their ip will be taken as 'priority' anyway, so for example,
1423  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1424  */
1425 void LocalUser::SetClass(const std::string &explicit_name)
1426 {
1427         ConnectClass *found = NULL;
1428
1429         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1430
1431         if (!explicit_name.empty())
1432         {
1433                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1434                 {
1435                         ConnectClass* c = *i;
1436
1437                         if (explicit_name == c->name)
1438                         {
1439                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Explicitly set to %s", explicit_name.c_str());
1440                                 found = c;
1441                         }
1442                 }
1443         }
1444         else
1445         {
1446                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1447                 {
1448                         ConnectClass* c = *i;
1449                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Checking %s", c->GetName().c_str());
1450
1451                         ModResult MOD_RESULT;
1452                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1453                         if (MOD_RESULT == MOD_RES_DENY)
1454                                 continue;
1455                         if (MOD_RESULT == MOD_RES_ALLOW)
1456                         {
1457                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Class forced by module to %s", c->GetName().c_str());
1458                                 found = c;
1459                                 break;
1460                         }
1461
1462                         if (c->type == CC_NAMED)
1463                                 continue;
1464
1465                         bool regdone = (registered != REG_NONE);
1466                         if (c->config->getBool("registered", regdone) != regdone)
1467                                 continue;
1468
1469                         /* check if host matches.. */
1470                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1471                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1472                         {
1473                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "No host match (for %s)", c->GetHost().c_str());
1474                                 continue;
1475                         }
1476
1477                         /*
1478                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1479                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1480                          */
1481                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1482                         {
1483                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1484                                 continue;
1485                         }
1486
1487                         /* if it requires a port ... */
1488                         int port = c->config->getInt("port");
1489                         if (port)
1490                         {
1491                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Requires port (%d)", port);
1492
1493                                 /* and our port doesn't match, fail. */
1494                                 if (this->GetServerPort() != port)
1495                                         continue;
1496                         }
1497
1498                         if (regdone && !c->config->getString("password").empty())
1499                         {
1500                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1501                                 {
1502                                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Bad password, skipping");
1503                                         continue;
1504                                 }
1505                         }
1506
1507                         /* we stop at the first class that meets ALL critera. */
1508                         found = c;
1509                         break;
1510                 }
1511         }
1512
1513         /*
1514          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1515          */
1516         if (found)
1517         {
1518                 MyClass = found;
1519         }
1520 }
1521
1522 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1523  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1524  * then their ip will be taken as 'priority' anyway, so for example,
1525  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1526  */
1527 ConnectClass* LocalUser::GetClass()
1528 {
1529         return MyClass;
1530 }
1531
1532 ConnectClass* User::GetClass()
1533 {
1534         return NULL;
1535 }
1536
1537 void User::PurgeEmptyChannels()
1538 {
1539         // firstly decrement the count on each channel
1540         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1541         {
1542                 Channel* c = *f;
1543                 c->DelUser(this);
1544         }
1545
1546         this->UnOper();
1547 }
1548
1549 const std::string& FakeUser::GetFullHost()
1550 {
1551         if (!ServerInstance->Config->HideWhoisServer.empty())
1552                 return ServerInstance->Config->HideWhoisServer;
1553         return server;
1554 }
1555
1556 const std::string& FakeUser::GetFullRealHost()
1557 {
1558         if (!ServerInstance->Config->HideWhoisServer.empty())
1559                 return ServerInstance->Config->HideWhoisServer;
1560         return server;
1561 }
1562
1563 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1564         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1565         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1566         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0),
1567         limit(0), nouserdns(false)
1568 {
1569 }
1570
1571 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1572         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1573         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1574         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1575         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1576         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1577         limit(parent.limit), nouserdns(parent.nouserdns)
1578 {
1579 }
1580
1581 void ConnectClass::Update(const ConnectClass* src)
1582 {
1583         config = src->config;
1584         type = src->type;
1585         fakelag = src->fakelag;
1586         name = src->name;
1587         registration_timeout = src->registration_timeout;
1588         host = src->host;
1589         pingtime = src->pingtime;
1590         softsendqmax = src->softsendqmax;
1591         hardsendqmax = src->hardsendqmax;
1592         recvqmax = src->recvqmax;
1593         penaltythreshold = src->penaltythreshold;
1594         commandrate = src->commandrate;
1595         maxlocal = src->maxlocal;
1596         maxglobal = src->maxglobal;
1597         maxconnwarn = src->maxconnwarn;
1598         maxchans = src->maxchans;
1599         limit = src->limit;
1600         nouserdns = src->nouserdns;
1601 }