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 #include "commands/cmd_whowas.h"
  32
  33 already_sent_t LocalUser::already_sent_id = 0;
  34
  35 std::string User::ProcessNoticeMasks(const char *sm)
  36 {
  37         bool adding = true, oldadding = false;
  38         const char *c = sm;
  39         std::string output;
  40
  41         while (c && *c)
  42         {
  43                 switch (*c)
  44                 {
  45                         case '+':
  46                                 adding = true;
  47                         break;
  48                         case '-':
  49                                 adding = false;
  50                         break;
  51                         case '*':
  52                                 for (unsigned char d = 'a'; d <= 'z'; d++)
  53                                 {
  54                                         if (!ServerInstance->SNO->masks[d - 'a'].Description.empty())
  55                                         {
  56                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  57                                                 {
  58                                                         if ((oldadding != adding) || (!output.length()))
  59                                                                 output += (adding ? '+' : '-');
  60
  61                                                         this->SetNoticeMask(d, adding);
  62
  63                                                         output += d;
  64                                                 }
  65                                                 oldadding = adding;
  66                                                 char u = toupper(d);
  67                                                 if ((!IsNoticeMaskSet(u) && adding) || (IsNoticeMaskSet(u) && !adding))
  68                                                 {
  69                                                         if ((oldadding != adding) || (!output.length()))
  70                                                                 output += (adding ? '+' : '-');
  71
  72                                                         this->SetNoticeMask(u, adding);
  73
  74                                                         output += u;
  75                                                 }
  76                                                 oldadding = adding;
  77                                         }
  78                                 }
  79                         break;
  80                         default:
  81                                 if (isalpha(*c))
  82                                 {
  83                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  84                                         {
  85                                                 if ((oldadding != adding) || (!output.length()))
  86                                                         output += (adding ? '+' : '-');
  87
  88                                                 this->SetNoticeMask(*c, adding);
  89
  90                                                 output += *c;
  91                                         }
  92                                 }
  93                                 else
  94                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  95
  96                                 oldadding = adding;
  97                         break;
  98                 }
  99
 100                 c++;
 101         }
 102
 103         std::string s = this->FormatNoticeMasks();
 104         if (s.length() == 0)
 105         {
 106                 this->modes[UM_SNOMASK] = false;
 107         }
 108
 109         return output;
 110 }
 111
 112 void LocalUser::StartDNSLookup()
 113 {
 114         try
 115         {
 116                 bool cached = false;
 117                 const char* sip = this->GetIPString();
 118                 UserResolver *res_reverse;
 119
 120                 QueryType resolvtype = this->client_sa.sa.sa_family == AF_INET6 ? DNS_QUERY_PTR6 : DNS_QUERY_PTR4;
 121                 res_reverse = new UserResolver(this, sip, resolvtype, cached);
 122
 123                 ServerInstance->AddResolver(res_reverse, cached);
 124         }
 125         catch (CoreException& e)
 126         {
 127                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 128                 dns_done = true;
 129                 ServerInstance->stats->statsDnsBad++;
 130         }
 131 }
 132
 133 bool User::IsNoticeMaskSet(unsigned char sm)
 134 {
 135         if (!isalpha(sm))
 136                 return false;
 137         return (snomasks[sm-65]);
 138 }
 139
 140 void User::SetNoticeMask(unsigned char sm, bool value)
 141 {
 142         if (!isalpha(sm))
 143                 return;
 144         snomasks[sm-65] = value;
 145 }
 146
 147 const char* User::FormatNoticeMasks()
 148 {
 149         static char data[MAXBUF];
 150         int offset = 0;
 151
 152         for (int n = 0; n < 64; n++)
 153         {
 154                 if (snomasks[n])
 155                         data[offset++] = n+65;
 156         }
 157
 158         data[offset] = 0;
 159         return data;
 160 }
 161
 162 bool User::IsModeSet(unsigned char m)
 163 {
 164         if (!isalpha(m))
 165                 return false;
 166         return (modes[m-65]);
 167 }
 168
 169 void User::SetMode(unsigned char m, bool value)
 170 {
 171         if (!isalpha(m))
 172                 return;
 173         modes[m-65] = value;
 174 }
 175
 176 const char* User::FormatModes(bool showparameters)
 177 {
 178         static char data[MAXBUF];
 179         std::string params;
 180         int offset = 0;
 181
 182         for (unsigned char n = 0; n < 64; n++)
 183         {
 184                 if (modes[n])
 185                 {
 186                         data[offset++] = n + 65;
 187                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 188                         if (showparameters && mh && mh->GetNumParams(true))
 189                         {
 190                                 std::string p = mh->GetUserParameter(this);
 191                                 if (p.length())
 192                                         params.append(" ").append(p);
 193                         }
 194                 }
 195         }
 196         data[offset] = 0;
 197         strlcat(data, params.c_str(), MAXBUF);
 198         return data;
 199 }
 200
 201 User::User(const std::string &uid, const std::string& sid, int type)
 202         : uuid(uid), server(sid), usertype(type)
 203 {
 204         age = ServerInstance->Time();
 205         signon = idle_lastmsg = 0;
 206         registered = 0;
 207         quietquit = quitting = exempt = dns_done = false;
 208         quitting_sendq = false;
 209         client_sa.sa.sa_family = AF_UNSPEC;
 210
 211         ServerInstance->Logs->Log("USERS", DEBUG, "New UUID for user: %s", uuid.c_str());
 212
 213         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 214         if (finduuid == ServerInstance->Users->uuidlist->end())
 215                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 216         else
 217                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 218 }
 219
 220 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 221         : User(ServerInstance->GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 222         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 223         already_sent(0)
 224 {
 225         lastping = 0;
 226         eh.SetFd(myfd);
 227
 228         SetClientIP(client);
 229         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 230 }
 231
 232 User::~User()
 233 {
 234         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 235                 ServerInstance->Logs->Log("USERS", DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 236 }
 237
 238 const std::string& User::MakeHost()
 239 {
 240         if (!this->cached_makehost.empty())
 241                 return this->cached_makehost;
 242
 243         char nhost[MAXBUF];
 244         /* This is much faster than snprintf */
 245         char* t = nhost;
 246         for(const char* n = ident.c_str(); *n; n++)
 247                 *t++ = *n;
 248         *t++ = '@';
 249         for(const char* n = host.c_str(); *n; n++)
 250                 *t++ = *n;
 251         *t = 0;
 252
 253         this->cached_makehost.assign(nhost);
 254
 255         return this->cached_makehost;
 256 }
 257
 258 const std::string& User::MakeHostIP()
 259 {
 260         if (!this->cached_hostip.empty())
 261                 return this->cached_hostip;
 262
 263         char ihost[MAXBUF];
 264         /* This is much faster than snprintf */
 265         char* t = ihost;
 266         for(const char* n = ident.c_str(); *n; n++)
 267                 *t++ = *n;
 268         *t++ = '@';
 269         for(const char* n = this->GetIPString(); *n; n++)
 270                 *t++ = *n;
 271         *t = 0;
 272
 273         this->cached_hostip = ihost;
 274
 275         return this->cached_hostip;
 276 }
 277
 278 const std::string& User::GetFullHost()
 279 {
 280         if (!this->cached_fullhost.empty())
 281                 return this->cached_fullhost;
 282
 283         char result[MAXBUF];
 284         char* t = result;
 285         for(const char* n = nick.c_str(); *n; n++)
 286                 *t++ = *n;
 287         *t++ = '!';
 288         for(const char* n = ident.c_str(); *n; n++)
 289                 *t++ = *n;
 290         *t++ = '@';
 291         for(const char* n = dhost.c_str(); *n; n++)
 292                 *t++ = *n;
 293         *t = 0;
 294
 295         this->cached_fullhost = result;
 296
 297         return this->cached_fullhost;
 298 }
 299
 300 char* User::MakeWildHost()
 301 {
 302         static char nresult[MAXBUF];
 303         char* t = nresult;
 304         *t++ = '*';     *t++ = '!';
 305         *t++ = '*';     *t++ = '@';
 306         for(const char* n = dhost.c_str(); *n; n++)
 307                 *t++ = *n;
 308         *t = 0;
 309         return nresult;
 310 }
 311
 312 const std::string& User::GetFullRealHost()
 313 {
 314         if (!this->cached_fullrealhost.empty())
 315                 return this->cached_fullrealhost;
 316
 317         char fresult[MAXBUF];
 318         char* t = fresult;
 319         for(const char* n = nick.c_str(); *n; n++)
 320                 *t++ = *n;
 321         *t++ = '!';
 322         for(const char* n = ident.c_str(); *n; n++)
 323                 *t++ = *n;
 324         *t++ = '@';
 325         for(const char* n = host.c_str(); *n; n++)
 326                 *t++ = *n;
 327         *t = 0;
 328
 329         this->cached_fullrealhost = fresult;
 330
 331         return this->cached_fullrealhost;
 332 }
 333
 334 bool LocalUser::IsInvited(const irc::string &channel)
 335 {
 336         Channel* chan = ServerInstance->FindChan(channel.c_str());
 337         if (!chan)
 338                 return false;
 339
 340         return (Invitation::Find(chan, this) != NULL);
 341 }
 342
 343 InviteList& LocalUser::GetInviteList()
 344 {
 345         RemoveExpiredInvites();
 346         return invites;
 347 }
 348
 349 void LocalUser::InviteTo(const irc::string &channel, time_t invtimeout)
 350 {
 351         Channel* chan = ServerInstance->FindChan(channel.c_str());
 352         if (chan)
 353                 Invitation::Create(chan, this, invtimeout);
 354 }
 355
 356 void LocalUser::RemoveInvite(const irc::string &channel)
 357 {
 358         Channel* chan = ServerInstance->FindChan(channel.c_str());
 359         if (chan)
 360         {
 361                 Invitation* inv = Invitation::Find(chan, this);
 362                 if (inv)
 363                 {
 364                         inv->cull();
 365                         delete inv;
 366                 }
 367         }
 368 }
 369
 370 void LocalUser::RemoveExpiredInvites()
 371 {
 372         Invitation::Find(NULL, this);
 373 }
 374
 375 bool User::HasModePermission(unsigned char, ModeType)
 376 {
 377         return true;
 378 }
 379
 380 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 381 {
 382         if (!IS_OPER(this))
 383                 return false;
 384
 385         if (mode < 'A' || mode > ('A' + 64)) return false;
 386
 387         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 388
 389 }
 390 /*
 391  * users on remote servers can completely bypass all permissions based checks.
 392  * This prevents desyncs when one server has different type/class tags to another.
 393  * That having been said, this does open things up to the possibility of source changes
 394  * allowing remote kills, etc - but if they have access to the src, they most likely have
 395  * access to the conf - so it's an end to a means either way.
 396  */
 397 bool User::HasPermission(const std::string&)
 398 {
 399         return true;
 400 }
 401
 402 bool LocalUser::HasPermission(const std::string &command)
 403 {
 404         // are they even an oper at all?
 405         if (!IS_OPER(this))
 406         {
 407                 return false;
 408         }
 409
 410         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 411                 return true;
 412         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 413                 return true;
 414
 415         return false;
 416 }
 417
 418 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 419 {
 420         return true;
 421 }
 422
 423 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 424 {
 425         if (!IS_OPER(this))
 426         {
 427                 if (noisy)
 428                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 429                 return false;
 430         }
 431
 432         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 433         {
 434                 return true;
 435         }
 436         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 437         {
 438                 return true;
 439         }
 440
 441         if (noisy)
 442                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), oper->NameStr(), privstr.c_str());
 443         return false;
 444 }
 445
 446 void UserIOHandler::OnDataReady()
 447 {
 448         if (user->quitting)
 449                 return;
 450
 451         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 452         {
 453                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 454                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 455                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 456         }
 457         unsigned long sendqmax = ULONG_MAX;
 458         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 459                 sendqmax = user->MyClass->GetSendqSoftMax();
 460         unsigned long penaltymax = ULONG_MAX;
 461         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 462                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 463
 464         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 465         {
 466                 std::string line;
 467                 line.reserve(MAXBUF);
 468                 std::string::size_type qpos = 0;
 469                 while (qpos < recvq.length())
 470                 {
 471                         char c = recvq[qpos++];
 472                         switch (c)
 473                         {
 474                         case '\0':
 475                                 c = ' ';
 476                                 break;
 477                         case '\r':
 478                                 continue;
 479                         case '\n':
 480                                 goto eol_found;
 481                         }
 482                         if (line.length() < MAXBUF - 2)
 483                                 line.push_back(c);
 484                 }
 485                 // if we got here, the recvq ran out before we found a newline
 486                 return;
 487 eol_found:
 488                 // just found a newline. Terminate the string, and pull it out of recvq
 489                 recvq = recvq.substr(qpos);
 490
 491                 // TODO should this be moved to when it was inserted in recvq?
 492                 ServerInstance->stats->statsRecv += qpos;
 493                 user->bytes_in += qpos;
 494                 user->cmds_in++;
 495
 496                 ServerInstance->Parser->ProcessBuffer(line, user);
 497                 if (user->quitting)
 498                         return;
 499         }
 500         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 501                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 502 }
 503
 504 void UserIOHandler::AddWriteBuf(const std::string &data)
 505 {
 506         if (user->quitting_sendq)
 507                 return;
 508         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 509                 !user->HasPrivPermission("users/flood/increased-buffers"))
 510         {
 511                 user->quitting_sendq = true;
 512                 ServerInstance->GlobalCulls.AddSQItem(user);
 513                 return;
 514         }
 515
 516         // We still want to append data to the sendq of a quitting user,
 517         // e.g. their ERROR message that says 'closing link'
 518
 519         WriteData(data);
 520 }
 521
 522 void UserIOHandler::OnError(BufferedSocketError)
 523 {
 524         ServerInstance->Users->QuitUser(user, getError());
 525 }
 526
 527 CullResult User::cull()
 528 {
 529         if (!quitting)
 530                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 531         PurgeEmptyChannels();
 532
 533         if (client_sa.sa.sa_family != AF_UNSPEC)
 534                 ServerInstance->Users->RemoveCloneCounts(this);
 535
 536         return Extensible::cull();
 537 }
 538
 539 CullResult LocalUser::cull()
 540 {
 541         std::vector<LocalUser*>::iterator x = find(ServerInstance->Users->local_users.begin(),ServerInstance->Users->local_users.end(),this);
 542         if (x != ServerInstance->Users->local_users.end())
 543                 ServerInstance->Users->local_users.erase(x);
 544         else
 545                 ServerInstance->Logs->Log("USERS", DEBUG, "Failed to remove user from vector");
 546
 547         ClearInvites();
 548         eh.cull();
 549         return User::cull();
 550 }
 551
 552 CullResult FakeUser::cull()
 553 {
 554         // Fake users don't quit, they just get culled.
 555         quitting = true;
 556         ServerInstance->Users->clientlist->erase(nick);
 557         ServerInstance->Users->uuidlist->erase(uuid);
 558         return User::cull();
 559 }
 560
 561 void User::Oper(OperInfo* info)
 562 {
 563         if (this->IsModeSet('o'))
 564                 this->UnOper();
 565
 566         this->modes[UM_OPERATOR] = 1;
 567         this->oper = info;
 568         this->WriteServ("MODE %s :+o", this->nick.c_str());
 569         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 570
 571         std::string opername;
 572         if (info->oper_block)
 573                 opername = info->oper_block->getString("name");
 574
 575         if (IS_LOCAL(this))
 576         {
 577                 LocalUser* l = IS_LOCAL(this);
 578                 std::string vhost = oper->getConfig("vhost");
 579                 if (!vhost.empty())
 580                         l->ChangeDisplayedHost(vhost.c_str());
 581                 std::string opClass = oper->getConfig("class");
 582                 if (!opClass.empty())
 583                         l->SetClass(opClass);
 584         }
 585
 586         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 587                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 588         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 589
 590         ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick.c_str(), this->ident.c_str(), this->host.c_str(), oper->NameStr());
 591         ServerInstance->Users->all_opers.push_back(this);
 592
 593         // Expand permissions from config for faster lookup
 594         if (IS_LOCAL(this))
 595                 oper->init();
 596
 597         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 598 }
 599
 600 void OperInfo::init()
 601 {
 602         AllowedOperCommands.clear();
 603         AllowedPrivs.clear();
 604         AllowedUserModes.reset();
 605         AllowedChanModes.reset();
 606         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 607
 608         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 609         {
 610                 ConfigTag* tag = *iter;
 611                 std::string mycmd, mypriv;
 612                 /* Process commands */
 613                 irc::spacesepstream CommandList(tag->getString("commands"));
 614                 while (CommandList.GetToken(mycmd))
 615                 {
 616                         AllowedOperCommands.insert(mycmd);
 617                 }
 618
 619                 irc::spacesepstream PrivList(tag->getString("privs"));
 620                 while (PrivList.GetToken(mypriv))
 621                 {
 622                         AllowedPrivs.insert(mypriv);
 623                 }
 624
 625                 for (unsigned char* c = (unsigned char*)tag->getString("usermodes").c_str(); *c; ++c)
 626                 {
 627                         if (*c == '*')
 628                         {
 629                                 this->AllowedUserModes.set();
 630                         }
 631                         else if (*c >= 'A' && *c < 'z')
 632                         {
 633                                 this->AllowedUserModes[*c - 'A'] = true;
 634                         }
 635                 }
 636
 637                 for (unsigned char* c = (unsigned char*)tag->getString("chanmodes").c_str(); *c; ++c)
 638                 {
 639                         if (*c == '*')
 640                         {
 641                                 this->AllowedChanModes.set();
 642                         }
 643                         else if (*c >= 'A' && *c < 'z')
 644                         {
 645                                 this->AllowedChanModes[*c - 'A'] = true;
 646                         }
 647                 }
 648         }
 649 }
 650
 651 void User::UnOper()
 652 {
 653         if (!IS_OPER(this))
 654                 return;
 655
 656         /*
 657          * unset their oper type (what IS_OPER checks).
 658          * note, order is important - this must come before modes as -o attempts
 659          * to call UnOper. -- w00t
 660          */
 661         oper = NULL;
 662
 663
 664         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 665         std::string moderemove("-");
 666
 667         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 668         {
 669                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 670                 if (mh && mh->NeedsOper())
 671                         moderemove += letter;
 672         }
 673
 674
 675         std::vector<std::string> parameters;
 676         parameters.push_back(this->nick);
 677         parameters.push_back(moderemove);
 678
 679         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 680
 681         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 682         ServerInstance->Users->all_opers.remove(this);
 683
 684         this->modes[UM_OPERATOR] = 0;
 685 }
 686
 687 /* adds or updates an entry in the whowas list */
 688 void User::AddToWhoWas()
 689 {
 690         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 691         if (whowas)
 692         {
 693                 WhowasRequest req(NULL, whowas, WhowasRequest::WHOWAS_ADD);
 694                 req.user = this;
 695                 req.Send();
 696         }
 697 }
 698
 699 /*
 700  * Check class restrictions
 701  */
 702 void LocalUser::CheckClass()
 703 {
 704         ConnectClass* a = this->MyClass;
 705
 706         if (!a)
 707         {
 708                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 709                 return;
 710         }
 711         else if (a->type == CC_DENY)
 712         {
 713                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 714                 return;
 715         }
 716         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 717         {
 718                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 719                 if (a->maxconnwarn)
 720                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 721                 return;
 722         }
 723         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 724         {
 725                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 726                 if (a->maxconnwarn)
 727                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 728                 return;
 729         }
 730
 731         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 732 }
 733
 734 bool User::CheckLines(bool doZline)
 735 {
 736         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 737
 738         if (!this->exempt)
 739         {
 740                 for (int n = 0; check[n]; ++n)
 741                 {
 742                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 743
 744                         if (r)
 745                         {
 746                                 r->Apply(this);
 747                                 return true;
 748                         }
 749                 }
 750         }
 751
 752         return false;
 753 }
 754
 755 void LocalUser::FullConnect()
 756 {
 757         ServerInstance->stats->statsConnects++;
 758         this->idle_lastmsg = ServerInstance->Time();
 759
 760         /*
 761          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 762          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 763          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 764          * Don't remove this! -- w00t
 765          */
 766         MyClass = NULL;
 767         SetClass();
 768         CheckClass();
 769         CheckLines();
 770
 771         if (quitting)
 772                 return;
 773
 774         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network.c_str());
 775         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str());
 776         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version InspIRCd-2.0",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
 777         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 778         this->WriteNumeric(RPL_SERVERVERSION, "%s %s InspIRCd-2.0 %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 779
 780         ServerInstance->Config->Send005(this);
 781         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 782
 783         /* Now registered */
 784         if (ServerInstance->Users->unregistered_count)
 785                 ServerInstance->Users->unregistered_count--;
 786
 787         /* Trigger MOTD and LUSERS output, give modules a chance too */
 788         ModResult MOD_RESULT;
 789         std::string command("MOTD");
 790         std::vector<std::string> parameters;
 791         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 792         if (!MOD_RESULT)
 793                 ServerInstance->CallCommandHandler(command, parameters, this);
 794
 795         MOD_RESULT = MOD_RES_PASSTHRU;
 796         command = "LUSERS";
 797         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 798         if (!MOD_RESULT)
 799                 ServerInstance->CallCommandHandler(command, parameters, this);
 800
 801         if (ServerInstance->Config->RawLog)
 802                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 803
 804         /*
 805          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 806          * for a user that doesn't exist yet.
 807          */
 808         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 809
 810         this->registered = REG_ALL;
 811
 812         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 813
 814         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d (class %s): %s!%s@%s (%s) [%s]",
 815                 this->GetServerPort(), this->MyClass->name.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
 816         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 817         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 818         // reset the flood penalty (which could have been raised due to things like auto +x)
 819         CommandFloodPenalty = 0;
 820 }
 821
 822 void User::InvalidateCache()
 823 {
 824         /* Invalidate cache */
 825         cached_fullhost.clear();
 826         cached_hostip.clear();
 827         cached_makehost.clear();
 828         cached_fullrealhost.clear();
 829 }
 830
 831 bool User::ChangeNick(const std::string& newnick, bool force)
 832 {
 833         ModResult MOD_RESULT;
 834
 835         if (force)
 836                 ServerInstance->NICKForced.set(this, 1);
 837         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 838         ServerInstance->NICKForced.set(this, 0);
 839
 840         if (MOD_RESULT == MOD_RES_DENY)
 841         {
 842                 ServerInstance->stats->statsCollisions++;
 843                 return false;
 844         }
 845
 846         if (assign(newnick) == assign(nick))
 847         {
 848                 // case change, don't need to check Q:lines and such
 849                 // and, if it's identical including case, we can leave right now
 850                 if (newnick == nick)
 851                         return true;
 852         }
 853         else
 854         {
 855                 /*
 856                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 857                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 858                  * Thanks Kein for finding this. -- w00t
 859                  *
 860                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 861                  *              -- w00t
 862                  */
 863                 if (IS_LOCAL(this) && !force)
 864                 {
 865                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 866                         if (mq)
 867                         {
 868                                 if (this->registered == REG_ALL)
 869                                 {
 870                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s!%s@%s: %s",
 871                                                 newnick.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), mq->reason.c_str());
 872                                 }
 873                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 874                                 return false;
 875                         }
 876
 877                         if (ServerInstance->Config->RestrictBannedUsers)
 878                         {
 879                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 880                                 {
 881                                         Channel *chan = *i;
 882                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 883                                         {
 884                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 885                                                 return false;
 886                                         }
 887                                 }
 888                         }
 889                 }
 890
 891                 /*
 892                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 893                  * then we have a potential collide. Check whether someone else is camping on the nick
 894                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 895                  * camper to their UID, and allow the incoming nick change.
 896                  *
 897                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 898                  * because the nick is already (rightfully) in use. -- w00t
 899                  */
 900                 User* InUse = ServerInstance->FindNickOnly(newnick);
 901                 if (InUse && (InUse != this))
 902                 {
 903                         if (InUse->registered != REG_ALL)
 904                         {
 905                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 906                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 907                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 908
 909                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 910                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 911
 912                                 InUse->nick = InUse->uuid;
 913                                 InUse->InvalidateCache();
 914                                 InUse->registered &= ~REG_NICK;
 915                         }
 916                         else
 917                         {
 918                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 919                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 920                                 return false;
 921                         }
 922                 }
 923         }
 924
 925         if (this->registered == REG_ALL)
 926                 this->WriteCommon("NICK %s",newnick.c_str());
 927         std::string oldnick = nick;
 928         nick = newnick;
 929
 930         InvalidateCache();
 931         ServerInstance->Users->clientlist->erase(oldnick);
 932         (*(ServerInstance->Users->clientlist))[newnick] = this;
 933
 934         if (registered == REG_ALL)
 935                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 936
 937         return true;
 938 }
 939
 940 int LocalUser::GetServerPort()
 941 {
 942         switch (this->server_sa.sa.sa_family)
 943         {
 944                 case AF_INET6:
 945                         return htons(this->server_sa.in6.sin6_port);
 946                 case AF_INET:
 947                         return htons(this->server_sa.in4.sin_port);
 948         }
 949         return 0;
 950 }
 951
 952 const char* User::GetIPString()
 953 {
 954         int port;
 955         if (cachedip.empty())
 956         {
 957                 irc::sockets::satoap(client_sa, cachedip, port);
 958                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 959                 if (cachedip.c_str()[0] == ':')
 960                         cachedip.insert(0,1,'0');
 961         }
 962
 963         return cachedip.c_str();
 964 }
 965
 966 irc::sockets::cidr_mask User::GetCIDRMask()
 967 {
 968         int range = 0;
 969         switch (client_sa.sa.sa_family)
 970         {
 971                 case AF_INET6:
 972                         range = ServerInstance->Config->c_ipv6_range;
 973                         break;
 974                 case AF_INET:
 975                         range = ServerInstance->Config->c_ipv4_range;
 976                         break;
 977         }
 978         return irc::sockets::cidr_mask(client_sa, range);
 979 }
 980
 981 bool User::SetClientIP(irc::sockets::sockaddrs *sa)
 982 {
 983         memcpy(&client_sa, sa, sizeof(irc::sockets::sockaddrs));
 984
 985         FOREACH_MOD(I_OnSetClientIP, OnSetClientIP(this));
 986
 987         return true;
 988 }
 989
 990 bool User::SetClientIP(const char* sip)
 991 {
 992         irc::sockets::sockaddrs sa;
 993
 994         this->cachedip = "";
 995         if (!irc::sockets::aptosa(sip, 0, sa))
 996                 return false;
 997
 998         return SetClientIP(&sa);
 999 }
1000
1001 static std::string wide_newline("\r\n");
1002
1003 void User::Write(const std::string& text)
1004 {
1005 }
1006
1007 void User::Write(const char *text, ...)
1008 {
1009 }
1010
1011 void LocalUser::Write(const std::string& text)
1012 {
1013         if (!ServerInstance->SE->BoundsCheckFd(&eh))
1014                 return;
1015
1016         if (text.length() > MAXBUF - 2)
1017         {
1018                 // this should happen rarely or never. Crop the string at 512 and try again.
1019                 std::string try_again = text.substr(0, MAXBUF - 2);
1020                 Write(try_again);
1021                 return;
1022         }
1023
1024         ServerInstance->Logs->Log("USEROUTPUT", RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
1025
1026         eh.AddWriteBuf(text);
1027         eh.AddWriteBuf(wide_newline);
1028
1029         ServerInstance->stats->statsSent += text.length() + 2;
1030         this->bytes_out += text.length() + 2;
1031         this->cmds_out++;
1032 }
1033
1034 /** Write()
1035  */
1036 void LocalUser::Write(const char *text, ...)
1037 {
1038         va_list argsPtr;
1039         char textbuffer[MAXBUF];
1040
1041         va_start(argsPtr, text);
1042         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1043         va_end(argsPtr);
1044
1045         this->Write(std::string(textbuffer));
1046 }
1047
1048 void User::WriteServ(const std::string& text)
1049 {
1050         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1051 }
1052
1053 /** WriteServ()
1054  *  Same as Write(), except `text' is prefixed with `:server.name '.
1055  */
1056 void User::WriteServ(const char* text, ...)
1057 {
1058         va_list argsPtr;
1059         char textbuffer[MAXBUF];
1060
1061         va_start(argsPtr, text);
1062         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1063         va_end(argsPtr);
1064
1065         this->WriteServ(std::string(textbuffer));
1066 }
1067
1068
1069 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1070 {
1071         va_list argsPtr;
1072         char textbuffer[MAXBUF];
1073
1074         va_start(argsPtr, text);
1075         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1076         va_end(argsPtr);
1077
1078         this->WriteNumeric(numeric, std::string(textbuffer));
1079 }
1080
1081 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1082 {
1083         char textbuffer[MAXBUF];
1084         ModResult MOD_RESULT;
1085
1086         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1087
1088         if (MOD_RESULT == MOD_RES_DENY)
1089                 return;
1090
1091         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1092         this->Write(std::string(textbuffer));
1093 }
1094
1095 void User::WriteFrom(User *user, const std::string &text)
1096 {
1097         char tb[MAXBUF];
1098
1099         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1100
1101         this->Write(std::string(tb));
1102 }
1103
1104
1105 /* write text from an originating user to originating user */
1106
1107 void User::WriteFrom(User *user, const char* text, ...)
1108 {
1109         va_list argsPtr;
1110         char textbuffer[MAXBUF];
1111
1112         va_start(argsPtr, text);
1113         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1114         va_end(argsPtr);
1115
1116         this->WriteFrom(user, std::string(textbuffer));
1117 }
1118
1119
1120 /* write text to an destination user from a source user (e.g. user privmsg) */
1121
1122 void User::WriteTo(User *dest, const char *data, ...)
1123 {
1124         char textbuffer[MAXBUF];
1125         va_list argsPtr;
1126
1127         va_start(argsPtr, data);
1128         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1129         va_end(argsPtr);
1130
1131         this->WriteTo(dest, std::string(textbuffer));
1132 }
1133
1134 void User::WriteTo(User *dest, const std::string &data)
1135 {
1136         dest->WriteFrom(this, data);
1137 }
1138
1139 void User::WriteCommon(const char* text, ...)
1140 {
1141         char textbuffer[MAXBUF];
1142         va_list argsPtr;
1143
1144         if (this->registered != REG_ALL || quitting)
1145                 return;
1146
1147         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1148
1149         va_start(argsPtr, text);
1150         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1151         va_end(argsPtr);
1152
1153         this->WriteCommonRaw(std::string(textbuffer), true);
1154 }
1155
1156 void User::WriteCommonExcept(const char* text, ...)
1157 {
1158         char textbuffer[MAXBUF];
1159         va_list argsPtr;
1160
1161         if (this->registered != REG_ALL || quitting)
1162                 return;
1163
1164         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1165
1166         va_start(argsPtr, text);
1167         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1168         va_end(argsPtr);
1169
1170         this->WriteCommonRaw(std::string(textbuffer), false);
1171 }
1172
1173 void User::WriteCommonRaw(const std::string &line, bool include_self)
1174 {
1175         if (this->registered != REG_ALL || quitting)
1176                 return;
1177
1178         LocalUser::already_sent_id++;
1179
1180         UserChanList include_c(chans);
1181         std::map<User*,bool> exceptions;
1182
1183         exceptions[this] = include_self;
1184
1185         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1186
1187         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1188         {
1189                 LocalUser* u = IS_LOCAL(i->first);
1190                 if (u && !u->quitting)
1191                 {
1192                         u->already_sent = LocalUser::already_sent_id;
1193                         if (i->second)
1194                                 u->Write(line);
1195                 }
1196         }
1197         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1198         {
1199                 Channel* c = *v;
1200                 const UserMembList* ulist = c->GetUsers();
1201                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1202                 {
1203                         LocalUser* u = IS_LOCAL(i->first);
1204                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1205                         {
1206                                 u->already_sent = LocalUser::already_sent_id;
1207                                 u->Write(line);
1208                         }
1209                 }
1210         }
1211 }
1212
1213 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1214 {
1215         char tb1[MAXBUF];
1216         char tb2[MAXBUF];
1217
1218         if (this->registered != REG_ALL)
1219                 return;
1220
1221         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1222
1223         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1224         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1225         std::string out1 = tb1;
1226         std::string out2 = tb2;
1227
1228         UserChanList include_c(chans);
1229         std::map<User*,bool> exceptions;
1230
1231         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1232
1233         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1234         {
1235                 LocalUser* u = IS_LOCAL(i->first);
1236                 if (u && !u->quitting)
1237                 {
1238                         u->already_sent = uniq_id;
1239                         if (i->second)
1240                                 u->Write(IS_OPER(u) ? out2 : out1);
1241                 }
1242         }
1243         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1244         {
1245                 const UserMembList* ulist = (*v)->GetUsers();
1246                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1247                 {
1248                         LocalUser* u = IS_LOCAL(i->first);
1249                         if (u && !u->quitting && (u->already_sent != uniq_id))
1250                         {
1251                                 u->already_sent = uniq_id;
1252                                 u->Write(IS_OPER(u) ? out2 : out1);
1253                         }
1254                 }
1255         }
1256 }
1257
1258 void LocalUser::SendText(const std::string& line)
1259 {
1260         Write(line);
1261 }
1262
1263 void RemoteUser::SendText(const std::string& line)
1264 {
1265         ServerInstance->PI->PushToClient(this, line);
1266 }
1267
1268 void FakeUser::SendText(const std::string& line)
1269 {
1270 }
1271
1272 void User::SendText(const char *text, ...)
1273 {
1274         va_list argsPtr;
1275         char line[MAXBUF];
1276
1277         va_start(argsPtr, text);
1278         vsnprintf(line, MAXBUF, text, argsPtr);
1279         va_end(argsPtr);
1280
1281         SendText(std::string(line));
1282 }
1283
1284 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1285 {
1286         char line[MAXBUF];
1287         int start_pos = LinePrefix.length();
1288         int pos = start_pos;
1289         memcpy(line, LinePrefix.data(), pos);
1290         std::string Word;
1291         while (TextStream >> Word)
1292         {
1293                 int len = Word.length();
1294                 if (pos + len + 12 > MAXBUF)
1295                 {
1296                         line[pos] = '\0';
1297                         SendText(std::string(line));
1298                         pos = start_pos;
1299                 }
1300                 line[pos] = ' ';
1301                 memcpy(line + pos + 1, Word.data(), len);
1302                 pos += len + 1;
1303         }
1304         line[pos] = '\0';
1305         SendText(std::string(line));
1306 }
1307
1308 /* return 0 or 1 depending if users u and u2 share one or more common channels
1309  * (used by QUIT, NICK etc which arent channel specific notices)
1310  *
1311  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1312  * the first users channels then the second users channels within the outer loop,
1313  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1314  * all possible iterations). However this new function instead checks against the
1315  * channel's userlist in the inner loop which is a std::map<User*,User*>
1316  * and saves us time as we already know what pointer value we are after.
1317  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1318  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1319  */
1320 bool User::SharesChannelWith(User *other)
1321 {
1322         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1323                 return false;
1324
1325         /* Outer loop */
1326         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1327         {
1328                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1329                  * by replacing it with a map::find which *should* be more efficient
1330                  */
1331                 if ((*i)->HasUser(other))
1332                         return true;
1333         }
1334         return false;
1335 }
1336
1337 bool User::ChangeName(const char* gecos)
1338 {
1339         if (!this->fullname.compare(gecos))
1340                 return true;
1341
1342         if (IS_LOCAL(this))
1343         {
1344                 ModResult MOD_RESULT;
1345                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1346                 if (MOD_RESULT == MOD_RES_DENY)
1347                         return false;
1348                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1349         }
1350         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1351
1352         return true;
1353 }
1354
1355 void User::DoHostCycle(const std::string &quitline)
1356 {
1357         char buffer[MAXBUF];
1358
1359         if (!ServerInstance->Config->CycleHosts)
1360                 return;
1361
1362         already_sent_t silent_id = ++LocalUser::already_sent_id;
1363         already_sent_t seen_id = ++LocalUser::already_sent_id;
1364
1365         UserChanList include_c(chans);
1366         std::map<User*,bool> exceptions;
1367
1368         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1369
1370         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1371         {
1372                 LocalUser* u = IS_LOCAL(i->first);
1373                 if (u && !u->quitting)
1374                 {
1375                         if (i->second)
1376                         {
1377                                 u->already_sent = seen_id;
1378                                 u->Write(quitline);
1379                         }
1380                         else
1381                         {
1382                                 u->already_sent = silent_id;
1383                         }
1384                 }
1385         }
1386         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1387         {
1388                 Channel* c = *v;
1389                 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1390                 std::string joinline(buffer);
1391                 Membership* memb = c->GetUser(this);
1392                 std::string modeline = memb->modes;
1393                 if (modeline.length() > 0)
1394                 {
1395                         for(unsigned int i=0; i < memb->modes.length(); i++)
1396                                 modeline.append(" ").append(nick);
1397                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s",
1398                                 ServerInstance->Config->CycleHostsFromUser ? GetFullHost().c_str() : ServerInstance->Config->ServerName.c_str(),
1399                                 c->name.c_str(), modeline.c_str());
1400                         modeline = buffer;
1401                 }
1402
1403                 const UserMembList *ulist = c->GetUsers();
1404                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1405                 {
1406                         LocalUser* u = IS_LOCAL(i->first);
1407                         if (u == NULL || u == this)
1408                                 continue;
1409                         if (u->already_sent == silent_id)
1410                                 continue;
1411
1412                         if (u->already_sent != seen_id)
1413                         {
1414                                 u->Write(quitline);
1415                                 u->already_sent = seen_id;
1416                         }
1417                         u->Write(joinline);
1418                         if (modeline.length() > 0)
1419                                 u->Write(modeline);
1420                 }
1421         }
1422 }
1423
1424 bool User::ChangeDisplayedHost(const char* shost)
1425 {
1426         if (dhost == shost)
1427                 return true;
1428
1429         if (IS_LOCAL(this))
1430         {
1431                 ModResult MOD_RESULT;
1432                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1433                 if (MOD_RESULT == MOD_RES_DENY)
1434                         return false;
1435         }
1436
1437         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1438
1439         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1440
1441         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1442         this->dhost.assign(shost, 0, 64);
1443
1444         this->InvalidateCache();
1445
1446         this->DoHostCycle(quitstr);
1447
1448         if (IS_LOCAL(this))
1449                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1450
1451         return true;
1452 }
1453
1454 bool User::ChangeIdent(const char* newident)
1455 {
1456         if (this->ident == newident)
1457                 return true;
1458
1459         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1460
1461         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1462
1463         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1464
1465         this->InvalidateCache();
1466
1467         this->DoHostCycle(quitstr);
1468
1469         return true;
1470 }
1471
1472 void User::SendAll(const char* command, const char* text, ...)
1473 {
1474         char textbuffer[MAXBUF];
1475         char formatbuffer[MAXBUF];
1476         va_list argsPtr;
1477
1478         va_start(argsPtr, text);
1479         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1480         va_end(argsPtr);
1481
1482         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1483         std::string fmt = formatbuffer;
1484
1485         for (std::vector<LocalUser*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1486         {
1487                 (*i)->Write(fmt);
1488         }
1489 }
1490
1491
1492 std::string User::ChannelList(User* source, bool spy)
1493 {
1494         std::string list;
1495
1496         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1497         {
1498                 Channel* c = *i;
1499                 /* If the target is the sender, neither +p nor +s is set, or
1500                  * the channel contains the user, it is not a spy channel
1501                  */
1502                 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1503                         list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1504         }
1505
1506         return list;
1507 }
1508
1509 void User::SplitChanList(User* dest, const std::string &cl)
1510 {
1511         std::string line;
1512         std::ostringstream prefix;
1513         std::string::size_type start, pos, length;
1514
1515         prefix << this->nick << " " << dest->nick << " :";
1516         line = prefix.str();
1517         int namelen = ServerInstance->Config->ServerName.length() + 6;
1518
1519         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1520         {
1521                 length = (pos == std::string::npos) ? cl.length() : pos;
1522
1523                 if (line.length() + namelen + length - start > 510)
1524                 {
1525                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1526                         line = prefix.str();
1527                 }
1528
1529                 if(pos == std::string::npos)
1530                 {
1531                         line.append(cl.substr(start, length - start));
1532                         break;
1533                 }
1534                 else
1535                 {
1536                         line.append(cl.substr(start, length - start + 1));
1537                 }
1538         }
1539
1540         if (line.length() != prefix.str().length())
1541         {
1542                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1543         }
1544 }
1545
1546 /*
1547  * Sets a user's connection class.
1548  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1549  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1550  * then their ip will be taken as 'priority' anyway, so for example,
1551  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1552  */
1553 void LocalUser::SetClass(const std::string &explicit_name)
1554 {
1555         ConnectClass *found = NULL;
1556
1557         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1558
1559         if (!explicit_name.empty())
1560         {
1561                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1562                 {
1563                         ConnectClass* c = *i;
1564
1565                         if (explicit_name == c->name)
1566                         {
1567                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1568                                 found = c;
1569                         }
1570                 }
1571         }
1572         else
1573         {
1574                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1575                 {
1576                         ConnectClass* c = *i;
1577                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Checking %s", c->GetName().c_str());
1578
1579                         ModResult MOD_RESULT;
1580                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1581                         if (MOD_RESULT == MOD_RES_DENY)
1582                                 continue;
1583                         if (MOD_RESULT == MOD_RES_ALLOW)
1584                         {
1585                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class forced by module to %s", c->GetName().c_str());
1586                                 found = c;
1587                                 break;
1588                         }
1589
1590                         if (c->type == CC_NAMED)
1591                                 continue;
1592
1593                         bool regdone = (registered != REG_NONE);
1594                         if (c->config->getBool("registered", regdone) != regdone)
1595                                 continue;
1596
1597                         /* check if host matches.. */
1598                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1599                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1600                         {
1601                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1602                                 continue;
1603                         }
1604
1605                         /*
1606                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1607                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1608                          */
1609                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1610                         {
1611                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1612                                 continue;
1613                         }
1614
1615                         /* if it requires a port ... */
1616                         int port = c->config->getInt("port");
1617                         if (port)
1618                         {
1619                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", port);
1620
1621                                 /* and our port doesn't match, fail. */
1622                                 if (this->GetServerPort() != port)
1623                                         continue;
1624                         }
1625
1626                         if (regdone && !c->config->getString("password").empty())
1627                         {
1628                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1629                                 {
1630                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Bad password, skipping");
1631                                         continue;
1632                                 }
1633                         }
1634
1635                         /* we stop at the first class that meets ALL critera. */
1636                         found = c;
1637                         break;
1638                 }
1639         }
1640
1641         /*
1642          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1643          */
1644         if (found)
1645         {
1646                 MyClass = found;
1647         }
1648 }
1649
1650 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1651  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1652  * then their ip will be taken as 'priority' anyway, so for example,
1653  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1654  */
1655 ConnectClass* LocalUser::GetClass()
1656 {
1657         return MyClass;
1658 }
1659
1660 ConnectClass* User::GetClass()
1661 {
1662         return NULL;
1663 }
1664
1665 void User::PurgeEmptyChannels()
1666 {
1667         // firstly decrement the count on each channel
1668         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1669         {
1670                 Channel* c = *f;
1671                 c->DelUser(this);
1672         }
1673
1674         this->UnOper();
1675 }
1676
1677 const std::string& FakeUser::GetFullHost()
1678 {
1679         if (!ServerInstance->Config->HideWhoisServer.empty())
1680                 return ServerInstance->Config->HideWhoisServer;
1681         return server;
1682 }
1683
1684 const std::string& FakeUser::GetFullRealHost()
1685 {
1686         if (!ServerInstance->Config->HideWhoisServer.empty())
1687                 return ServerInstance->Config->HideWhoisServer;
1688         return server;
1689 }
1690
1691 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1692         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1693         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1694         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0), limit(0)
1695 {
1696 }
1697
1698 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1699         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1700         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1701         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1702         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1703         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1704         limit(parent.limit)
1705 {
1706 }
1707
1708 void ConnectClass::Update(const ConnectClass* src)
1709 {
1710         config = src->config;
1711         type = src->type;
1712         fakelag = src->fakelag;
1713         name = src->name;
1714         registration_timeout = src->registration_timeout;
1715         host = src->host;
1716         pingtime = src->pingtime;
1717         softsendqmax = src->softsendqmax;
1718         hardsendqmax = src->hardsendqmax;
1719         recvqmax = src->recvqmax;
1720         penaltythreshold = src->penaltythreshold;
1721         commandrate = src->commandrate;
1722         maxlocal = src->maxlocal;
1723         maxglobal = src->maxglobal;
1724         maxconnwarn = src->maxconnwarn;
1725         maxchans = src->maxchans;
1726         limit = src->limit;
1727 }