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 char data[MAXBUF];
 157         std::string params;
 158         int offset = 0;
 159
 160         for (unsigned char n = 0; n < 64; n++)
 161         {
 162                 if (modes[n])
 163                 {
 164                         data[offset++] = 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[offset] = 0;
 175         strlcat(data, params.c_str(), MAXBUF);
 176         return data;
 177 }
 178
 179 User::User(const std::string &uid, const std::string& sid, int type)
 180         : uuid(uid), server(sid), usertype(type)
 181 {
 182         age = ServerInstance->Time();
 183         signon = 0;
 184         registered = 0;
 185         quietquit = quitting = false;
 186         client_sa.sa.sa_family = AF_UNSPEC;
 187
 188         ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New UUID for user: %s", uuid.c_str());
 189
 190         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 191         if (finduuid == ServerInstance->Users->uuidlist->end())
 192                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 193         else
 194                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 195 }
 196
 197 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 198         : User(ServerInstance->UIDGen.GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 199         localuseriter(ServerInstance->Users->local_users.end()),
 200         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 201         already_sent(0)
 202 {
 203         exempt = quitting_sendq = false;
 204         idle_lastmsg = 0;
 205         ident = "unknown";
 206         lastping = 0;
 207         eh.SetFd(myfd);
 208         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 209         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 210         dhost = host = GetIPString();
 211 }
 212
 213 User::~User()
 214 {
 215         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 216                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 217 }
 218
 219 const std::string& User::MakeHost()
 220 {
 221         if (!this->cached_makehost.empty())
 222                 return this->cached_makehost;
 223
 224         char nhost[MAXBUF];
 225         /* This is much faster than snprintf */
 226         char* t = nhost;
 227         for(const char* n = ident.c_str(); *n; n++)
 228                 *t++ = *n;
 229         *t++ = '@';
 230         for(const char* n = host.c_str(); *n; n++)
 231                 *t++ = *n;
 232         *t = 0;
 233
 234         this->cached_makehost.assign(nhost);
 235
 236         return this->cached_makehost;
 237 }
 238
 239 const std::string& User::MakeHostIP()
 240 {
 241         if (!this->cached_hostip.empty())
 242                 return this->cached_hostip;
 243
 244         char ihost[MAXBUF];
 245         /* This is much faster than snprintf */
 246         char* t = ihost;
 247         for(const char* n = ident.c_str(); *n; n++)
 248                 *t++ = *n;
 249         *t++ = '@';
 250         for(const char* n = this->GetIPString().c_str(); *n; n++)
 251                 *t++ = *n;
 252         *t = 0;
 253
 254         this->cached_hostip = ihost;
 255
 256         return this->cached_hostip;
 257 }
 258
 259 const std::string& User::GetFullHost()
 260 {
 261         if (!this->cached_fullhost.empty())
 262                 return this->cached_fullhost;
 263
 264         char result[MAXBUF];
 265         char* t = result;
 266         for(const char* n = nick.c_str(); *n; n++)
 267                 *t++ = *n;
 268         *t++ = '!';
 269         for(const char* n = ident.c_str(); *n; n++)
 270                 *t++ = *n;
 271         *t++ = '@';
 272         for(const char* n = dhost.c_str(); *n; n++)
 273                 *t++ = *n;
 274         *t = 0;
 275
 276         this->cached_fullhost = result;
 277
 278         return this->cached_fullhost;
 279 }
 280
 281 char* User::MakeWildHost()
 282 {
 283         static char nresult[MAXBUF];
 284         char* t = nresult;
 285         *t++ = '*';     *t++ = '!';
 286         *t++ = '*';     *t++ = '@';
 287         for(const char* n = dhost.c_str(); *n; n++)
 288                 *t++ = *n;
 289         *t = 0;
 290         return nresult;
 291 }
 292
 293 const std::string& User::GetFullRealHost()
 294 {
 295         if (!this->cached_fullrealhost.empty())
 296                 return this->cached_fullrealhost;
 297
 298         char fresult[MAXBUF];
 299         char* t = fresult;
 300         for(const char* n = nick.c_str(); *n; n++)
 301                 *t++ = *n;
 302         *t++ = '!';
 303         for(const char* n = ident.c_str(); *n; n++)
 304                 *t++ = *n;
 305         *t++ = '@';
 306         for(const char* n = host.c_str(); *n; n++)
 307                 *t++ = *n;
 308         *t = 0;
 309
 310         this->cached_fullrealhost = fresult;
 311
 312         return this->cached_fullrealhost;
 313 }
 314
 315 InviteList& LocalUser::GetInviteList()
 316 {
 317         RemoveExpiredInvites();
 318         return invites;
 319 }
 320
 321 bool LocalUser::RemoveInvite(Channel* chan)
 322 {
 323         Invitation* inv = Invitation::Find(chan, this);
 324         if (inv)
 325         {
 326                 inv->cull();
 327                 delete inv;
 328                 return true;
 329         }
 330         return false;
 331 }
 332
 333 void LocalUser::RemoveExpiredInvites()
 334 {
 335         Invitation::Find(NULL, this);
 336 }
 337
 338 bool User::HasModePermission(unsigned char, ModeType)
 339 {
 340         return true;
 341 }
 342
 343 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 344 {
 345         if (!this->IsOper())
 346                 return false;
 347
 348         if (mode < 'A' || mode > ('A' + 64)) return false;
 349
 350         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 351
 352 }
 353 /*
 354  * users on remote servers can completely bypass all permissions based checks.
 355  * This prevents desyncs when one server has different type/class tags to another.
 356  * That having been said, this does open things up to the possibility of source changes
 357  * allowing remote kills, etc - but if they have access to the src, they most likely have
 358  * access to the conf - so it's an end to a means either way.
 359  */
 360 bool User::HasPermission(const std::string&)
 361 {
 362         return true;
 363 }
 364
 365 bool LocalUser::HasPermission(const std::string &command)
 366 {
 367         // are they even an oper at all?
 368         if (!this->IsOper())
 369         {
 370                 return false;
 371         }
 372
 373         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 374                 return true;
 375         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 376                 return true;
 377
 378         return false;
 379 }
 380
 381 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 382 {
 383         return true;
 384 }
 385
 386 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 387 {
 388         if (!this->IsOper())
 389         {
 390                 if (noisy)
 391                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 392                 return false;
 393         }
 394
 395         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 396         {
 397                 return true;
 398         }
 399         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 400         {
 401                 return true;
 402         }
 403
 404         if (noisy)
 405                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), oper->NameStr(), privstr.c_str());
 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(MAXBUF);
 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                 ServerInstance->Users->local_users.erase(localuseriter);
 510         else
 511                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: LocalUserIter does not point to a valid entry for " + this->nick);
 512
 513         ClearInvites();
 514         eh.cull();
 515         return User::cull();
 516 }
 517
 518 CullResult FakeUser::cull()
 519 {
 520         // Fake users don't quit, they just get culled.
 521         quitting = true;
 522         ServerInstance->Users->clientlist->erase(nick);
 523         ServerInstance->Users->uuidlist->erase(uuid);
 524         return User::cull();
 525 }
 526
 527 void User::Oper(OperInfo* info)
 528 {
 529         if (this->IsModeSet('o'))
 530                 this->UnOper();
 531
 532         this->modes[UM_OPERATOR] = 1;
 533         this->oper = info;
 534         this->WriteServ("MODE %s :+o", this->nick.c_str());
 535         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 536
 537         std::string opername;
 538         if (info->oper_block)
 539                 opername = info->oper_block->getString("name");
 540
 541         if (IS_LOCAL(this))
 542         {
 543                 LocalUser* l = IS_LOCAL(this);
 544                 std::string vhost = oper->getConfig("vhost");
 545                 if (!vhost.empty())
 546                         l->ChangeDisplayedHost(vhost.c_str());
 547                 std::string opClass = oper->getConfig("class");
 548                 if (!opClass.empty())
 549                         l->SetClass(opClass);
 550         }
 551
 552         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 553                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 554         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 555
 556         ServerInstance->Logs->Log("OPER", LOG_DEFAULT, "%s opered as type: %s", GetFullRealHost().c_str(), oper->NameStr());
 557         ServerInstance->Users->all_opers.push_back(this);
 558
 559         // Expand permissions from config for faster lookup
 560         if (IS_LOCAL(this))
 561                 oper->init();
 562
 563         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 564 }
 565
 566 void OperInfo::init()
 567 {
 568         AllowedOperCommands.clear();
 569         AllowedPrivs.clear();
 570         AllowedUserModes.reset();
 571         AllowedChanModes.reset();
 572         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 573
 574         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 575         {
 576                 ConfigTag* tag = *iter;
 577                 std::string mycmd, mypriv;
 578                 /* Process commands */
 579                 irc::spacesepstream CommandList(tag->getString("commands"));
 580                 while (CommandList.GetToken(mycmd))
 581                 {
 582                         AllowedOperCommands.insert(mycmd);
 583                 }
 584
 585                 irc::spacesepstream PrivList(tag->getString("privs"));
 586                 while (PrivList.GetToken(mypriv))
 587                 {
 588                         AllowedPrivs.insert(mypriv);
 589                 }
 590
 591                 std::string modes = tag->getString("usermodes");
 592                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 593                 {
 594                         if (*c == '*')
 595                         {
 596                                 this->AllowedUserModes.set();
 597                         }
 598                         else if (*c >= 'A' && *c < 'z')
 599                         {
 600                                 this->AllowedUserModes[*c - 'A'] = true;
 601                         }
 602                 }
 603
 604                 modes = tag->getString("chanmodes");
 605                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 606                 {
 607                         if (*c == '*')
 608                         {
 609                                 this->AllowedChanModes.set();
 610                         }
 611                         else if (*c >= 'A' && *c < 'z')
 612                         {
 613                                 this->AllowedChanModes[*c - 'A'] = true;
 614                         }
 615                 }
 616         }
 617 }
 618
 619 void User::UnOper()
 620 {
 621         if (!this->IsOper())
 622                 return;
 623
 624         /*
 625          * unset their oper type (what IS_OPER checks).
 626          * note, order is important - this must come before modes as -o attempts
 627          * to call UnOper. -- w00t
 628          */
 629         oper = NULL;
 630
 631
 632         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 633         std::string moderemove("-");
 634
 635         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 636         {
 637                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 638                 if (mh && mh->NeedsOper())
 639                         moderemove += letter;
 640         }
 641
 642
 643         std::vector<std::string> parameters;
 644         parameters.push_back(this->nick);
 645         parameters.push_back(moderemove);
 646
 647         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 648
 649         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 650         ServerInstance->Users->all_opers.remove(this);
 651
 652         this->modes[UM_OPERATOR] = 0;
 653 }
 654
 655 /*
 656  * Check class restrictions
 657  */
 658 void LocalUser::CheckClass()
 659 {
 660         ConnectClass* a = this->MyClass;
 661
 662         if (!a)
 663         {
 664                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 665                 return;
 666         }
 667         else if (a->type == CC_DENY)
 668         {
 669                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 670                 return;
 671         }
 672         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 673         {
 674                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 675                 if (a->maxconnwarn)
 676                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString().c_str());
 677                 return;
 678         }
 679         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 680         {
 681                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 682                 if (a->maxconnwarn)
 683                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString().c_str());
 684                 return;
 685         }
 686
 687         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 688 }
 689
 690 bool LocalUser::CheckLines(bool doZline)
 691 {
 692         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 693
 694         if (!this->exempt)
 695         {
 696                 for (int n = 0; check[n]; ++n)
 697                 {
 698                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 699
 700                         if (r)
 701                         {
 702                                 r->Apply(this);
 703                                 return true;
 704                         }
 705                 }
 706         }
 707
 708         return false;
 709 }
 710
 711 void LocalUser::FullConnect()
 712 {
 713         ServerInstance->stats->statsConnects++;
 714         this->idle_lastmsg = ServerInstance->Time();
 715
 716         /*
 717          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 718          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 719          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 720          * Don't remove this! -- w00t
 721          */
 722         MyClass = NULL;
 723         SetClass();
 724         CheckClass();
 725         CheckLines();
 726
 727         if (quitting)
 728                 return;
 729
 730         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str());
 731         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version %s",this->nick.c_str(),ServerInstance->Config->ServerName.c_str(),BRANCH);
 732         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 733
 734         std::string umlist = ServerInstance->Modes->UserModeList();
 735         std::string cmlist = ServerInstance->Modes->ChannelModeList();
 736         std::string pmlist = ServerInstance->Modes->ParaModeList();
 737         this->WriteNumeric(RPL_SERVERVERSION, "%s %s %s %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), BRANCH, umlist.c_str(), cmlist.c_str(), pmlist.c_str());
 738
 739         ServerInstance->ISupport.SendTo(this);
 740         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 741
 742         /* Now registered */
 743         if (ServerInstance->Users->unregistered_count)
 744                 ServerInstance->Users->unregistered_count--;
 745
 746         /* Trigger MOTD and LUSERS output, give modules a chance too */
 747         ModResult MOD_RESULT;
 748         std::string command("LUSERS");
 749         std::vector<std::string> parameters;
 750         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 751         if (!MOD_RESULT)
 752                 ServerInstance->Parser->CallHandler(command, parameters, this);
 753
 754         MOD_RESULT = MOD_RES_PASSTHRU;
 755         command = "MOTD";
 756         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 757         if (!MOD_RESULT)
 758                 ServerInstance->Parser->CallHandler(command, parameters, this);
 759
 760         if (ServerInstance->Config->RawLog)
 761                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 762
 763         /*
 764          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 765          * for a user that doesn't exist yet.
 766          */
 767         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 768
 769         this->registered = REG_ALL;
 770
 771         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 772
 773         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d (class %s): %s (%s) [%s]",
 774                 this->GetServerPort(), this->MyClass->name.c_str(), GetFullRealHost().c_str(), this->GetIPString().c_str(), this->fullname.c_str());
 775         ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Adding NEGATIVE hit for " + this->GetIPString());
 776         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 777         // reset the flood penalty (which could have been raised due to things like auto +x)
 778         CommandFloodPenalty = 0;
 779 }
 780
 781 void User::InvalidateCache()
 782 {
 783         /* Invalidate cache */
 784         cached_fullhost.clear();
 785         cached_hostip.clear();
 786         cached_makehost.clear();
 787         cached_fullrealhost.clear();
 788 }
 789
 790 bool User::ChangeNick(const std::string& newnick, bool force)
 791 {
 792         if (quitting)
 793         {
 794                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Attempted to change nick of a quitting user: " + this->nick);
 795                 return false;
 796         }
 797
 798         ModResult MOD_RESULT;
 799
 800         if (force)
 801                 ServerInstance->NICKForced.set(this, 1);
 802         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 803         ServerInstance->NICKForced.set(this, 0);
 804
 805         if (MOD_RESULT == MOD_RES_DENY)
 806         {
 807                 ServerInstance->stats->statsCollisions++;
 808                 return false;
 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         va_list argsPtr;
1021         char textbuffer[MAXBUF];
1022
1023         va_start(argsPtr, text);
1024         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1025         va_end(argsPtr);
1026
1027         this->Write(std::string(textbuffer));
1028 }
1029
1030 void User::WriteServ(const std::string& text)
1031 {
1032         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1033 }
1034
1035 /** WriteServ()
1036  *  Same as Write(), except `text' is prefixed with `:server.name '.
1037  */
1038 void User::WriteServ(const char* text, ...)
1039 {
1040         va_list argsPtr;
1041         char textbuffer[MAXBUF];
1042
1043         va_start(argsPtr, text);
1044         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1045         va_end(argsPtr);
1046
1047         this->WriteServ(std::string(textbuffer));
1048 }
1049
1050
1051 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1052 {
1053         va_list argsPtr;
1054         char textbuffer[MAXBUF];
1055
1056         va_start(argsPtr, text);
1057         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1058         va_end(argsPtr);
1059
1060         this->WriteNumeric(numeric, std::string(textbuffer));
1061 }
1062
1063 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1064 {
1065         char textbuffer[MAXBUF];
1066         ModResult MOD_RESULT;
1067
1068         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1069
1070         if (MOD_RESULT == MOD_RES_DENY)
1071                 return;
1072
1073         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1074         this->Write(std::string(textbuffer));
1075 }
1076
1077 void User::WriteFrom(User *user, const std::string &text)
1078 {
1079         char tb[MAXBUF];
1080
1081         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1082
1083         this->Write(std::string(tb));
1084 }
1085
1086
1087 /* write text from an originating user to originating user */
1088
1089 void User::WriteFrom(User *user, const char* text, ...)
1090 {
1091         va_list argsPtr;
1092         char textbuffer[MAXBUF];
1093
1094         va_start(argsPtr, text);
1095         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1096         va_end(argsPtr);
1097
1098         this->WriteFrom(user, std::string(textbuffer));
1099 }
1100
1101
1102 /* write text to an destination user from a source user (e.g. user privmsg) */
1103
1104 void User::WriteTo(User *dest, const char *data, ...)
1105 {
1106         char textbuffer[MAXBUF];
1107         va_list argsPtr;
1108
1109         va_start(argsPtr, data);
1110         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1111         va_end(argsPtr);
1112
1113         this->WriteTo(dest, std::string(textbuffer));
1114 }
1115
1116 void User::WriteTo(User *dest, const std::string &data)
1117 {
1118         dest->WriteFrom(this, data);
1119 }
1120
1121 void User::WriteCommon(const char* text, ...)
1122 {
1123         char textbuffer[MAXBUF];
1124         va_list argsPtr;
1125
1126         if (this->registered != REG_ALL || quitting)
1127                 return;
1128
1129         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1130
1131         va_start(argsPtr, text);
1132         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1133         va_end(argsPtr);
1134
1135         this->WriteCommonRaw(std::string(textbuffer), true);
1136 }
1137
1138 void User::WriteCommonExcept(const char* text, ...)
1139 {
1140         char textbuffer[MAXBUF];
1141         va_list argsPtr;
1142
1143         if (this->registered != REG_ALL || quitting)
1144                 return;
1145
1146         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1147
1148         va_start(argsPtr, text);
1149         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1150         va_end(argsPtr);
1151
1152         this->WriteCommonRaw(std::string(textbuffer), false);
1153 }
1154
1155 void User::WriteCommonRaw(const std::string &line, bool include_self)
1156 {
1157         if (this->registered != REG_ALL || quitting)
1158                 return;
1159
1160         LocalUser::already_sent_id++;
1161
1162         UserChanList include_c(chans);
1163         std::map<User*,bool> exceptions;
1164
1165         exceptions[this] = include_self;
1166
1167         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1168
1169         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1170         {
1171                 LocalUser* u = IS_LOCAL(i->first);
1172                 if (u && !u->quitting)
1173                 {
1174                         u->already_sent = LocalUser::already_sent_id;
1175                         if (i->second)
1176                                 u->Write(line);
1177                 }
1178         }
1179         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1180         {
1181                 Channel* c = *v;
1182                 const UserMembList* ulist = c->GetUsers();
1183                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1184                 {
1185                         LocalUser* u = IS_LOCAL(i->first);
1186                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1187                         {
1188                                 u->already_sent = LocalUser::already_sent_id;
1189                                 u->Write(line);
1190                         }
1191                 }
1192         }
1193 }
1194
1195 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1196 {
1197         char tb1[MAXBUF];
1198         char tb2[MAXBUF];
1199
1200         if (this->registered != REG_ALL)
1201                 return;
1202
1203         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1204
1205         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1206         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1207         std::string out1 = tb1;
1208         std::string out2 = tb2;
1209
1210         UserChanList include_c(chans);
1211         std::map<User*,bool> exceptions;
1212
1213         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1214
1215         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1216         {
1217                 LocalUser* u = IS_LOCAL(i->first);
1218                 if (u && !u->quitting)
1219                 {
1220                         u->already_sent = uniq_id;
1221                         if (i->second)
1222                                 u->Write(u->IsOper() ? out2 : out1);
1223                 }
1224         }
1225         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1226         {
1227                 const UserMembList* ulist = (*v)->GetUsers();
1228                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1229                 {
1230                         LocalUser* u = IS_LOCAL(i->first);
1231                         if (u && !u->quitting && (u->already_sent != uniq_id))
1232                         {
1233                                 u->already_sent = uniq_id;
1234                                 u->Write(u->IsOper() ? out2 : out1);
1235                         }
1236                 }
1237         }
1238 }
1239
1240 void LocalUser::SendText(const std::string& line)
1241 {
1242         Write(line);
1243 }
1244
1245 void RemoteUser::SendText(const std::string& line)
1246 {
1247         ServerInstance->PI->PushToClient(this, line);
1248 }
1249
1250 void FakeUser::SendText(const std::string& line)
1251 {
1252 }
1253
1254 void User::SendText(const char *text, ...)
1255 {
1256         va_list argsPtr;
1257         char line[MAXBUF];
1258
1259         va_start(argsPtr, text);
1260         vsnprintf(line, MAXBUF, text, argsPtr);
1261         va_end(argsPtr);
1262
1263         SendText(std::string(line));
1264 }
1265
1266 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1267 {
1268         char line[MAXBUF];
1269         int start_pos = LinePrefix.length();
1270         int pos = start_pos;
1271         memcpy(line, LinePrefix.data(), pos);
1272         std::string Word;
1273         while (TextStream >> Word)
1274         {
1275                 int len = Word.length();
1276                 if (pos + len + 12 > MAXBUF)
1277                 {
1278                         line[pos] = '\0';
1279                         SendText(std::string(line));
1280                         pos = start_pos;
1281                 }
1282                 line[pos] = ' ';
1283                 memcpy(line + pos + 1, Word.data(), len);
1284                 pos += len + 1;
1285         }
1286         line[pos] = '\0';
1287         SendText(std::string(line));
1288 }
1289
1290 /* return 0 or 1 depending if users u and u2 share one or more common channels
1291  * (used by QUIT, NICK etc which arent channel specific notices)
1292  *
1293  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1294  * the first users channels then the second users channels within the outer loop,
1295  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1296  * all possible iterations). However this new function instead checks against the
1297  * channel's userlist in the inner loop which is a std::map<User*,User*>
1298  * and saves us time as we already know what pointer value we are after.
1299  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1300  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1301  */
1302 bool User::SharesChannelWith(User *other)
1303 {
1304         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1305                 return false;
1306
1307         /* Outer loop */
1308         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1309         {
1310                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1311                  * by replacing it with a map::find which *should* be more efficient
1312                  */
1313                 if ((*i)->HasUser(other))
1314                         return true;
1315         }
1316         return false;
1317 }
1318
1319 bool User::ChangeName(const char* gecos)
1320 {
1321         if (!this->fullname.compare(gecos))
1322                 return true;
1323
1324         if (IS_LOCAL(this))
1325         {
1326                 ModResult MOD_RESULT;
1327                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1328                 if (MOD_RESULT == MOD_RES_DENY)
1329                         return false;
1330                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1331         }
1332         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1333
1334         return true;
1335 }
1336
1337 void User::DoHostCycle(const std::string &quitline)
1338 {
1339         char buffer[MAXBUF];
1340
1341         if (!ServerInstance->Config->CycleHosts)
1342                 return;
1343
1344         already_sent_t silent_id = ++LocalUser::already_sent_id;
1345         already_sent_t seen_id = ++LocalUser::already_sent_id;
1346
1347         UserChanList include_c(chans);
1348         std::map<User*,bool> exceptions;
1349
1350         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1351
1352         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1353         {
1354                 LocalUser* u = IS_LOCAL(i->first);
1355                 if (u && !u->quitting)
1356                 {
1357                         if (i->second)
1358                         {
1359                                 u->already_sent = seen_id;
1360                                 u->Write(quitline);
1361                         }
1362                         else
1363                         {
1364                                 u->already_sent = silent_id;
1365                         }
1366                 }
1367         }
1368         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1369         {
1370                 Channel* c = *v;
1371                 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1372                 std::string joinline(buffer);
1373                 Membership* memb = c->GetUser(this);
1374                 std::string modeline = memb->modes;
1375                 if (modeline.length() > 0)
1376                 {
1377                         for(unsigned int i=0; i < memb->modes.length(); i++)
1378                                 modeline.append(" ").append(nick);
1379                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s",
1380                                 ServerInstance->Config->CycleHostsFromUser ? GetFullHost().c_str() : ServerInstance->Config->ServerName.c_str(),
1381                                 c->name.c_str(), modeline.c_str());
1382                         modeline = buffer;
1383                 }
1384
1385                 const UserMembList *ulist = c->GetUsers();
1386                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1387                 {
1388                         LocalUser* u = IS_LOCAL(i->first);
1389                         if (u == NULL || u == this)
1390                                 continue;
1391                         if (u->already_sent == silent_id)
1392                                 continue;
1393
1394                         if (u->already_sent != seen_id)
1395                         {
1396                                 u->Write(quitline);
1397                                 u->already_sent = seen_id;
1398                         }
1399                         u->Write(joinline);
1400                         if (modeline.length() > 0)
1401                                 u->Write(modeline);
1402                 }
1403         }
1404 }
1405
1406 bool User::ChangeDisplayedHost(const char* shost)
1407 {
1408         if (dhost == shost)
1409                 return true;
1410
1411         if (IS_LOCAL(this))
1412         {
1413                 ModResult MOD_RESULT;
1414                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1415                 if (MOD_RESULT == MOD_RES_DENY)
1416                         return false;
1417         }
1418
1419         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1420
1421         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1422
1423         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1424         this->dhost.assign(shost, 0, 64);
1425
1426         this->InvalidateCache();
1427
1428         this->DoHostCycle(quitstr);
1429
1430         if (IS_LOCAL(this))
1431                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1432
1433         return true;
1434 }
1435
1436 bool User::ChangeIdent(const char* newident)
1437 {
1438         if (this->ident == newident)
1439                 return true;
1440
1441         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1442
1443         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1444
1445         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax);
1446
1447         this->InvalidateCache();
1448
1449         this->DoHostCycle(quitstr);
1450
1451         return true;
1452 }
1453
1454 void User::SendAll(const char* command, const char* text, ...)
1455 {
1456         char textbuffer[MAXBUF];
1457         char formatbuffer[MAXBUF];
1458         va_list argsPtr;
1459
1460         va_start(argsPtr, text);
1461         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1462         va_end(argsPtr);
1463
1464         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1465         std::string fmt = formatbuffer;
1466
1467         for (LocalUserList::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1468         {
1469                 if ((*i)->registered == REG_ALL)
1470                         (*i)->Write(fmt);
1471         }
1472 }
1473
1474 /*
1475  * Sets a user's connection class.
1476  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1477  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1478  * then their ip will be taken as 'priority' anyway, so for example,
1479  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1480  */
1481 void LocalUser::SetClass(const std::string &explicit_name)
1482 {
1483         ConnectClass *found = NULL;
1484
1485         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1486
1487         if (!explicit_name.empty())
1488         {
1489                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1490                 {
1491                         ConnectClass* c = *i;
1492
1493                         if (explicit_name == c->name)
1494                         {
1495                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Explicitly set to %s", explicit_name.c_str());
1496                                 found = c;
1497                         }
1498                 }
1499         }
1500         else
1501         {
1502                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1503                 {
1504                         ConnectClass* c = *i;
1505                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Checking %s", c->GetName().c_str());
1506
1507                         ModResult MOD_RESULT;
1508                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1509                         if (MOD_RESULT == MOD_RES_DENY)
1510                                 continue;
1511                         if (MOD_RESULT == MOD_RES_ALLOW)
1512                         {
1513                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Class forced by module to %s", c->GetName().c_str());
1514                                 found = c;
1515                                 break;
1516                         }
1517
1518                         if (c->type == CC_NAMED)
1519                                 continue;
1520
1521                         bool regdone = (registered != REG_NONE);
1522                         if (c->config->getBool("registered", regdone) != regdone)
1523                                 continue;
1524
1525                         /* check if host matches.. */
1526                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1527                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1528                         {
1529                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "No host match (for %s)", c->GetHost().c_str());
1530                                 continue;
1531                         }
1532
1533                         /*
1534                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1535                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1536                          */
1537                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1538                         {
1539                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1540                                 continue;
1541                         }
1542
1543                         /* if it requires a port ... */
1544                         int port = c->config->getInt("port");
1545                         if (port)
1546                         {
1547                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Requires port (%d)", port);
1548
1549                                 /* and our port doesn't match, fail. */
1550                                 if (this->GetServerPort() != port)
1551                                         continue;
1552                         }
1553
1554                         if (regdone && !c->config->getString("password").empty())
1555                         {
1556                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1557                                 {
1558                                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Bad password, skipping");
1559                                         continue;
1560                                 }
1561                         }
1562
1563                         /* we stop at the first class that meets ALL critera. */
1564                         found = c;
1565                         break;
1566                 }
1567         }
1568
1569         /*
1570          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1571          */
1572         if (found)
1573         {
1574                 MyClass = found;
1575         }
1576 }
1577
1578 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1579  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1580  * then their ip will be taken as 'priority' anyway, so for example,
1581  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1582  */
1583 ConnectClass* LocalUser::GetClass()
1584 {
1585         return MyClass;
1586 }
1587
1588 ConnectClass* User::GetClass()
1589 {
1590         return NULL;
1591 }
1592
1593 void User::PurgeEmptyChannels()
1594 {
1595         // firstly decrement the count on each channel
1596         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1597         {
1598                 Channel* c = *f;
1599                 c->DelUser(this);
1600         }
1601
1602         this->UnOper();
1603 }
1604
1605 const std::string& FakeUser::GetFullHost()
1606 {
1607         if (!ServerInstance->Config->HideWhoisServer.empty())
1608                 return ServerInstance->Config->HideWhoisServer;
1609         return server;
1610 }
1611
1612 const std::string& FakeUser::GetFullRealHost()
1613 {
1614         if (!ServerInstance->Config->HideWhoisServer.empty())
1615                 return ServerInstance->Config->HideWhoisServer;
1616         return server;
1617 }
1618
1619 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1620         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1621         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1622         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0),
1623         limit(0), nouserdns(false)
1624 {
1625 }
1626
1627 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1628         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1629         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1630         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1631         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1632         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1633         limit(parent.limit), nouserdns(parent.nouserdns)
1634 {
1635 }
1636
1637 void ConnectClass::Update(const ConnectClass* src)
1638 {
1639         config = src->config;
1640         type = src->type;
1641         fakelag = src->fakelag;
1642         name = src->name;
1643         registration_timeout = src->registration_timeout;
1644         host = src->host;
1645         pingtime = src->pingtime;
1646         softsendqmax = src->softsendqmax;
1647         hardsendqmax = src->hardsendqmax;
1648         recvqmax = src->recvqmax;
1649         penaltythreshold = src->penaltythreshold;
1650         commandrate = src->commandrate;
1651         maxlocal = src->maxlocal;
1652         maxglobal = src->maxglobal;
1653         maxconnwarn = src->maxconnwarn;
1654         maxchans = src->maxchans;
1655         limit = src->limit;
1656         nouserdns = src->nouserdns;
1657 }