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