src/users.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2006-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2007, 2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2008 John Brooks <john.brooks@dereferenced.net>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2008 Oliver Lupton <oliverlupton@gmail.com>
  10  *   Copyright (C) 2003-2008 Craig Edwards <craigedwards@brainbox.cc>
  11  *
  12  * This file is part of InspIRCd.  InspIRCd is free software: you can
  13  * redistribute it and/or modify it under the terms of the GNU General Public
  14  * License as published by the Free Software Foundation, version 2.
  15  *
  16  * This program is distributed in the hope that it will be useful, but WITHOUT
  17  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  18  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  19  * details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25
  26 #include "inspircd.h"
  27 #include <stdarg.h>
  28 #include "socketengine.h"
  29 #include "xline.h"
  30 #include "bancache.h"
  31
  32 already_sent_t LocalUser::already_sent_id = 0;
  33
  34 std::string User::ProcessNoticeMasks(const char *sm)
  35 {
  36         bool adding = true, oldadding = false;
  37         const char *c = sm;
  38         std::string output;
  39
  40         while (c && *c)
  41         {
  42                 switch (*c)
  43                 {
  44                         case '+':
  45                                 adding = true;
  46                         break;
  47                         case '-':
  48                                 adding = false;
  49                         break;
  50                         case '*':
  51                                 for (unsigned char d = 'a'; d <= 'z'; d++)
  52                                 {
  53                                         if (!ServerInstance->SNO->masks[d - 'a'].Description.empty())
  54                                         {
  55                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  56                                                 {
  57                                                         if ((oldadding != adding) || (!output.length()))
  58                                                                 output += (adding ? '+' : '-');
  59
  60                                                         this->SetNoticeMask(d, adding);
  61
  62                                                         output += d;
  63                                                 }
  64                                                 oldadding = adding;
  65                                                 char u = toupper(d);
  66                                                 if ((!IsNoticeMaskSet(u) && adding) || (IsNoticeMaskSet(u) && !adding))
  67                                                 {
  68                                                         if ((oldadding != adding) || (!output.length()))
  69                                                                 output += (adding ? '+' : '-');
  70
  71                                                         this->SetNoticeMask(u, adding);
  72
  73                                                         output += u;
  74                                                 }
  75                                                 oldadding = adding;
  76                                         }
  77                                 }
  78                         break;
  79                         default:
  80                                 if (isalpha(*c))
  81                                 {
  82                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  83                                         {
  84                                                 if ((oldadding != adding) || (!output.length()))
  85                                                         output += (adding ? '+' : '-');
  86
  87                                                 this->SetNoticeMask(*c, adding);
  88
  89                                                 output += *c;
  90                                         }
  91                                 }
  92                                 else
  93                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  94
  95                                 oldadding = adding;
  96                         break;
  97                 }
  98
  99                 c++;
 100         }
 101
 102         std::string s = this->FormatNoticeMasks();
 103         if (s.length() == 0)
 104         {
 105                 this->modes[UM_SNOMASK] = false;
 106         }
 107
 108         return output;
 109 }
 110
 111 bool User::IsNoticeMaskSet(unsigned char sm)
 112 {
 113         if (!isalpha(sm))
 114                 return false;
 115         return (snomasks[sm-65]);
 116 }
 117
 118 void User::SetNoticeMask(unsigned char sm, bool value)
 119 {
 120         if (!isalpha(sm))
 121                 return;
 122         snomasks[sm-65] = value;
 123 }
 124
 125 const char* User::FormatNoticeMasks()
 126 {
 127         static char data[MAXBUF];
 128         int offset = 0;
 129
 130         for (int n = 0; n < 64; n++)
 131         {
 132                 if (snomasks[n])
 133                         data[offset++] = n+65;
 134         }
 135
 136         data[offset] = 0;
 137         return data;
 138 }
 139
 140 bool User::IsModeSet(unsigned char m)
 141 {
 142         if (!isalpha(m))
 143                 return false;
 144         return (modes[m-65]);
 145 }
 146
 147 void User::SetMode(unsigned char m, bool value)
 148 {
 149         if (!isalpha(m))
 150                 return;
 151         modes[m-65] = value;
 152 }
 153
 154 const char* User::FormatModes(bool showparameters)
 155 {
 156         static char data[MAXBUF];
 157         std::string params;
 158         int offset = 0;
 159
 160         for (unsigned char n = 0; n < 64; n++)
 161         {
 162                 if (modes[n])
 163                 {
 164                         data[offset++] = n + 65;
 165                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 166                         if (showparameters && mh && mh->GetNumParams(true))
 167                         {
 168                                 std::string p = mh->GetUserParameter(this);
 169                                 if (p.length())
 170                                         params.append(" ").append(p);
 171                         }
 172                 }
 173         }
 174         data[offset] = 0;
 175         strlcat(data, params.c_str(), MAXBUF);
 176         return data;
 177 }
 178
 179 User::User(const std::string &uid, const std::string& sid, int type)
 180         : uuid(uid), server(sid), usertype(type)
 181 {
 182         age = ServerInstance->Time();
 183         signon = 0;
 184         registered = 0;
 185         quietquit = quitting = false;
 186         client_sa.sa.sa_family = AF_UNSPEC;
 187
 188         ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New UUID for user: %s", uuid.c_str());
 189
 190         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 191         if (finduuid == ServerInstance->Users->uuidlist->end())
 192                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 193         else
 194                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 195 }
 196
 197 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 198         : User(ServerInstance->UIDGen.GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 199         localuseriter(ServerInstance->Users->local_users.end()),
 200         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 201         already_sent(0)
 202 {
 203         exempt = quitting_sendq = false;
 204         idle_lastmsg = 0;
 205         ident = "unknown";
 206         lastping = 0;
 207         eh.SetFd(myfd);
 208         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 209         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 210         dhost = host = GetIPString();
 211 }
 212
 213 User::~User()
 214 {
 215         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 216                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 217 }
 218
 219 const std::string& User::MakeHost()
 220 {
 221         if (!this->cached_makehost.empty())
 222                 return this->cached_makehost;
 223
 224         char nhost[MAXBUF];
 225         /* This is much faster than snprintf */
 226         char* t = nhost;
 227         for(const char* n = ident.c_str(); *n; n++)
 228                 *t++ = *n;
 229         *t++ = '@';
 230         for(const char* n = host.c_str(); *n; n++)
 231                 *t++ = *n;
 232         *t = 0;
 233
 234         this->cached_makehost.assign(nhost);
 235
 236         return this->cached_makehost;
 237 }
 238
 239 const std::string& User::MakeHostIP()
 240 {
 241         if (!this->cached_hostip.empty())
 242                 return this->cached_hostip;
 243
 244         char ihost[MAXBUF];
 245         /* This is much faster than snprintf */
 246         char* t = ihost;
 247         for(const char* n = ident.c_str(); *n; n++)
 248                 *t++ = *n;
 249         *t++ = '@';
 250         for(const char* n = this->GetIPString().c_str(); *n; n++)
 251                 *t++ = *n;
 252         *t = 0;
 253
 254         this->cached_hostip = ihost;
 255
 256         return this->cached_hostip;
 257 }
 258
 259 const std::string& User::GetFullHost()
 260 {
 261         if (!this->cached_fullhost.empty())
 262                 return this->cached_fullhost;
 263
 264         char result[MAXBUF];
 265         char* t = result;
 266         for(const char* n = nick.c_str(); *n; n++)
 267                 *t++ = *n;
 268         *t++ = '!';
 269         for(const char* n = ident.c_str(); *n; n++)
 270                 *t++ = *n;
 271         *t++ = '@';
 272         for(const char* n = dhost.c_str(); *n; n++)
 273                 *t++ = *n;
 274         *t = 0;
 275
 276         this->cached_fullhost = result;
 277
 278         return this->cached_fullhost;
 279 }
 280
 281 char* User::MakeWildHost()
 282 {
 283         static char nresult[MAXBUF];
 284         char* t = nresult;
 285         *t++ = '*';     *t++ = '!';
 286         *t++ = '*';     *t++ = '@';
 287         for(const char* n = dhost.c_str(); *n; n++)
 288                 *t++ = *n;
 289         *t = 0;
 290         return nresult;
 291 }
 292
 293 const std::string& User::GetFullRealHost()
 294 {
 295         if (!this->cached_fullrealhost.empty())
 296                 return this->cached_fullrealhost;
 297
 298         char fresult[MAXBUF];
 299         char* t = fresult;
 300         for(const char* n = nick.c_str(); *n; n++)
 301                 *t++ = *n;
 302         *t++ = '!';
 303         for(const char* n = ident.c_str(); *n; n++)
 304                 *t++ = *n;
 305         *t++ = '@';
 306         for(const char* n = host.c_str(); *n; n++)
 307                 *t++ = *n;
 308         *t = 0;
 309
 310         this->cached_fullrealhost = fresult;
 311
 312         return this->cached_fullrealhost;
 313 }
 314
 315 InviteList& LocalUser::GetInviteList()
 316 {
 317         RemoveExpiredInvites();
 318         return invites;
 319 }
 320
 321 bool LocalUser::RemoveInvite(Channel* chan)
 322 {
 323         Invitation* inv = Invitation::Find(chan, this);
 324         if (inv)
 325         {
 326                 inv->cull();
 327                 delete inv;
 328                 return true;
 329         }
 330         return false;
 331 }
 332
 333 void LocalUser::RemoveExpiredInvites()
 334 {
 335         Invitation::Find(NULL, this);
 336 }
 337
 338 bool User::HasModePermission(unsigned char, ModeType)
 339 {
 340         return true;
 341 }
 342
 343 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 344 {
 345         if (!this->IsOper())
 346                 return false;
 347
 348         if (mode < 'A' || mode > ('A' + 64)) return false;
 349
 350         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 351
 352 }
 353 /*
 354  * users on remote servers can completely bypass all permissions based checks.
 355  * This prevents desyncs when one server has different type/class tags to another.
 356  * That having been said, this does open things up to the possibility of source changes
 357  * allowing remote kills, etc - but if they have access to the src, they most likely have
 358  * access to the conf - so it's an end to a means either way.
 359  */
 360 bool User::HasPermission(const std::string&)
 361 {
 362         return true;
 363 }
 364
 365 bool LocalUser::HasPermission(const std::string &command)
 366 {
 367         // are they even an oper at all?
 368         if (!this->IsOper())
 369         {
 370                 return false;
 371         }
 372
 373         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 374                 return true;
 375         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 376                 return true;
 377
 378         return false;
 379 }
 380
 381 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 382 {
 383         return true;
 384 }
 385
 386 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 387 {
 388         if (!this->IsOper())
 389         {
 390                 if (noisy)
 391                         this->WriteNotice("You are not an oper");
 392                 return false;
 393         }
 394
 395         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 396         {
 397                 return true;
 398         }
 399         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 400         {
 401                 return true;
 402         }
 403
 404         if (noisy)
 405                 this->WriteNotice("Oper type " + std::string(oper->NameStr()) + " does not have access to priv " + privstr);
 406
 407         return false;
 408 }
 409
 410 void UserIOHandler::OnDataReady()
 411 {
 412         if (user->quitting)
 413                 return;
 414
 415         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 416         {
 417                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 418                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 419                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 420                 return;
 421         }
 422         unsigned long sendqmax = ULONG_MAX;
 423         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 424                 sendqmax = user->MyClass->GetSendqSoftMax();
 425         unsigned long penaltymax = ULONG_MAX;
 426         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 427                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 428
 429         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 430         {
 431                 std::string line;
 432                 line.reserve(MAXBUF);
 433                 std::string::size_type qpos = 0;
 434                 while (qpos < recvq.length())
 435                 {
 436                         char c = recvq[qpos++];
 437                         switch (c)
 438                         {
 439                         case '\0':
 440                                 c = ' ';
 441                                 break;
 442                         case '\r':
 443                                 continue;
 444                         case '\n':
 445                                 goto eol_found;
 446                         }
 447                         if (line.length() < MAXBUF - 2)
 448                                 line.push_back(c);
 449                 }
 450                 // if we got here, the recvq ran out before we found a newline
 451                 return;
 452 eol_found:
 453                 // just found a newline. Terminate the string, and pull it out of recvq
 454                 recvq = recvq.substr(qpos);
 455
 456                 // TODO should this be moved to when it was inserted in recvq?
 457                 ServerInstance->stats->statsRecv += qpos;
 458                 user->bytes_in += qpos;
 459                 user->cmds_in++;
 460
 461                 ServerInstance->Parser->ProcessBuffer(line, user);
 462                 if (user->quitting)
 463                         return;
 464         }
 465         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 466                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 467 }
 468
 469 void UserIOHandler::AddWriteBuf(const std::string &data)
 470 {
 471         if (user->quitting_sendq)
 472                 return;
 473         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 474                 !user->HasPrivPermission("users/flood/increased-buffers"))
 475         {
 476                 user->quitting_sendq = true;
 477                 ServerInstance->GlobalCulls.AddSQItem(user);
 478                 return;
 479         }
 480
 481         // We still want to append data to the sendq of a quitting user,
 482         // e.g. their ERROR message that says 'closing link'
 483
 484         WriteData(data);
 485 }
 486
 487 void UserIOHandler::OnError(BufferedSocketError)
 488 {
 489         ServerInstance->Users->QuitUser(user, getError());
 490 }
 491
 492 CullResult User::cull()
 493 {
 494         if (!quitting)
 495                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 496         PurgeEmptyChannels();
 497
 498         if (client_sa.sa.sa_family != AF_UNSPEC)
 499                 ServerInstance->Users->RemoveCloneCounts(this);
 500
 501         return Extensible::cull();
 502 }
 503
 504 CullResult LocalUser::cull()
 505 {
 506         // The iterator is initialized to local_users.end() in the constructor. It is
 507         // overwritten in UserManager::AddUser() with the real iterator so this check
 508         // is only a precaution currently.
 509         if (localuseriter != ServerInstance->Users->local_users.end())
 510                 ServerInstance->Users->local_users.erase(localuseriter);
 511         else
 512                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: LocalUserIter does not point to a valid entry for " + this->nick);
 513
 514         ClearInvites();
 515         eh.cull();
 516         return User::cull();
 517 }
 518
 519 CullResult FakeUser::cull()
 520 {
 521         // Fake users don't quit, they just get culled.
 522         quitting = true;
 523         ServerInstance->Users->clientlist->erase(nick);
 524         ServerInstance->Users->uuidlist->erase(uuid);
 525         return User::cull();
 526 }
 527
 528 void User::Oper(OperInfo* info)
 529 {
 530         if (this->IsModeSet('o'))
 531                 this->UnOper();
 532
 533         this->modes[UM_OPERATOR] = 1;
 534         this->oper = info;
 535         this->WriteServ("MODE %s :+o", this->nick.c_str());
 536         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 537
 538         std::string opername;
 539         if (info->oper_block)
 540                 opername = info->oper_block->getString("name");
 541
 542         if (IS_LOCAL(this))
 543         {
 544                 LocalUser* l = IS_LOCAL(this);
 545                 std::string vhost = oper->getConfig("vhost");
 546                 if (!vhost.empty())
 547                         l->ChangeDisplayedHost(vhost.c_str());
 548                 std::string opClass = oper->getConfig("class");
 549                 if (!opClass.empty())
 550                         l->SetClass(opClass);
 551         }
 552
 553         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 554                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 555         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 556
 557         ServerInstance->Logs->Log("OPER", LOG_DEFAULT, "%s opered as type: %s", GetFullRealHost().c_str(), oper->NameStr());
 558         ServerInstance->Users->all_opers.push_back(this);
 559
 560         // Expand permissions from config for faster lookup
 561         if (IS_LOCAL(this))
 562                 oper->init();
 563
 564         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 565 }
 566
 567 void OperInfo::init()
 568 {
 569         AllowedOperCommands.clear();
 570         AllowedPrivs.clear();
 571         AllowedUserModes.reset();
 572         AllowedChanModes.reset();
 573         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 574
 575         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 576         {
 577                 ConfigTag* tag = *iter;
 578                 std::string mycmd, mypriv;
 579                 /* Process commands */
 580                 irc::spacesepstream CommandList(tag->getString("commands"));
 581                 while (CommandList.GetToken(mycmd))
 582                 {
 583                         AllowedOperCommands.insert(mycmd);
 584                 }
 585
 586                 irc::spacesepstream PrivList(tag->getString("privs"));
 587                 while (PrivList.GetToken(mypriv))
 588                 {
 589                         AllowedPrivs.insert(mypriv);
 590                 }
 591
 592                 std::string modes = tag->getString("usermodes");
 593                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 594                 {
 595                         if (*c == '*')
 596                         {
 597                                 this->AllowedUserModes.set();
 598                         }
 599                         else if (*c >= 'A' && *c < 'z')
 600                         {
 601                                 this->AllowedUserModes[*c - 'A'] = true;
 602                         }
 603                 }
 604
 605                 modes = tag->getString("chanmodes");
 606                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 607                 {
 608                         if (*c == '*')
 609                         {
 610                                 this->AllowedChanModes.set();
 611                         }
 612                         else if (*c >= 'A' && *c < 'z')
 613                         {
 614                                 this->AllowedChanModes[*c - 'A'] = true;
 615                         }
 616                 }
 617         }
 618 }
 619
 620 void User::UnOper()
 621 {
 622         if (!this->IsOper())
 623                 return;
 624
 625         /*
 626          * unset their oper type (what IS_OPER checks).
 627          * note, order is important - this must come before modes as -o attempts
 628          * to call UnOper. -- w00t
 629          */
 630         oper = NULL;
 631
 632
 633         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 634         std::string moderemove("-");
 635
 636         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 637         {
 638                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 639                 if (mh && mh->NeedsOper())
 640                         moderemove += letter;
 641         }
 642
 643
 644         std::vector<std::string> parameters;
 645         parameters.push_back(this->nick);
 646         parameters.push_back(moderemove);
 647
 648         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 649
 650         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 651         ServerInstance->Users->all_opers.remove(this);
 652
 653         this->modes[UM_OPERATOR] = 0;
 654 }
 655
 656 /*
 657  * Check class restrictions
 658  */
 659 void LocalUser::CheckClass()
 660 {
 661         ConnectClass* a = this->MyClass;
 662
 663         if (!a)
 664         {
 665                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 666                 return;
 667         }
 668         else if (a->type == CC_DENY)
 669         {
 670                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 671                 return;
 672         }
 673         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 674         {
 675                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 676                 if (a->maxconnwarn)
 677                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString().c_str());
 678                 return;
 679         }
 680         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 681         {
 682                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 683                 if (a->maxconnwarn)
 684                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString().c_str());
 685                 return;
 686         }
 687
 688         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 689 }
 690
 691 bool LocalUser::CheckLines(bool doZline)
 692 {
 693         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 694
 695         if (!this->exempt)
 696         {
 697                 for (int n = 0; check[n]; ++n)
 698                 {
 699                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 700
 701                         if (r)
 702                         {
 703                                 r->Apply(this);
 704                                 return true;
 705                         }
 706                 }
 707         }
 708
 709         return false;
 710 }
 711
 712 void LocalUser::FullConnect()
 713 {
 714         ServerInstance->stats->statsConnects++;
 715         this->idle_lastmsg = ServerInstance->Time();
 716
 717         /*
 718          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 719          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 720          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 721          * Don't remove this! -- w00t
 722          */
 723         MyClass = NULL;
 724         SetClass();
 725         CheckClass();
 726         CheckLines();
 727
 728         if (quitting)
 729                 return;
 730
 731         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str());
 732         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version %s",this->nick.c_str(),ServerInstance->Config->ServerName.c_str(),BRANCH);
 733         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 734
 735         std::string umlist = ServerInstance->Modes->UserModeList();
 736         std::string cmlist = ServerInstance->Modes->ChannelModeList();
 737         std::string pmlist = ServerInstance->Modes->ParaModeList();
 738         this->WriteNumeric(RPL_SERVERVERSION, "%s %s %s %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), BRANCH, umlist.c_str(), cmlist.c_str(), pmlist.c_str());
 739
 740         ServerInstance->ISupport.SendTo(this);
 741         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 742
 743         /* Now registered */
 744         if (ServerInstance->Users->unregistered_count)
 745                 ServerInstance->Users->unregistered_count--;
 746
 747         /* Trigger MOTD and LUSERS output, give modules a chance too */
 748         ModResult MOD_RESULT;
 749         std::string command("LUSERS");
 750         std::vector<std::string> parameters;
 751         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 752         if (!MOD_RESULT)
 753                 ServerInstance->Parser->CallHandler(command, parameters, this);
 754
 755         MOD_RESULT = MOD_RES_PASSTHRU;
 756         command = "MOTD";
 757         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 758         if (!MOD_RESULT)
 759                 ServerInstance->Parser->CallHandler(command, parameters, this);
 760
 761         if (ServerInstance->Config->RawLog)
 762                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 763
 764         /*
 765          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 766          * for a user that doesn't exist yet.
 767          */
 768         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 769
 770         this->registered = REG_ALL;
 771
 772         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 773
 774         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d (class %s): %s (%s) [%s]",
 775                 this->GetServerPort(), this->MyClass->name.c_str(), GetFullRealHost().c_str(), this->GetIPString().c_str(), this->fullname.c_str());
 776         ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Adding NEGATIVE hit for " + this->GetIPString());
 777         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 778         // reset the flood penalty (which could have been raised due to things like auto +x)
 779         CommandFloodPenalty = 0;
 780 }
 781
 782 void User::InvalidateCache()
 783 {
 784         /* Invalidate cache */
 785         cached_fullhost.clear();
 786         cached_hostip.clear();
 787         cached_makehost.clear();
 788         cached_fullrealhost.clear();
 789 }
 790
 791 bool User::ChangeNick(const std::string& newnick, bool force)
 792 {
 793         if (quitting)
 794         {
 795                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Attempted to change nick of a quitting user: " + this->nick);
 796                 return false;
 797         }
 798
 799         ModResult MOD_RESULT;
 800
 801         if (force)
 802                 ServerInstance->NICKForced.set(this, 1);
 803         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 804         ServerInstance->NICKForced.set(this, 0);
 805
 806         if (MOD_RESULT == MOD_RES_DENY)
 807         {
 808                 ServerInstance->stats->statsCollisions++;
 809                 return false;
 810         }
 811
 812         if (assign(newnick) == assign(nick))
 813         {
 814                 // case change, don't need to check Q:lines and such
 815                 // and, if it's identical including case, we can leave right now
 816                 if (newnick == nick)
 817                         return true;
 818         }
 819         else
 820         {
 821                 /*
 822                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 823                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 824                  * Thanks Kein for finding this. -- w00t
 825                  *
 826                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 827                  *              -- w00t
 828                  */
 829                 if (IS_LOCAL(this) && !force)
 830                 {
 831                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 832                         if (mq)
 833                         {
 834                                 if (this->registered == REG_ALL)
 835                                 {
 836                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s: %s",
 837                                                 newnick.c_str(), GetFullRealHost().c_str(), mq->reason.c_str());
 838                                 }
 839                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 840                                 return false;
 841                         }
 842
 843                         if (ServerInstance->Config->RestrictBannedUsers)
 844                         {
 845                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 846                                 {
 847                                         Channel *chan = *i;
 848                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 849                                         {
 850                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 851                                                 return false;
 852                                         }
 853                                 }
 854                         }
 855                 }
 856
 857                 /*
 858                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 859                  * then we have a potential collide. Check whether someone else is camping on the nick
 860                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 861                  * camper to their UID, and allow the incoming nick change.
 862                  *
 863                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 864                  * because the nick is already (rightfully) in use. -- w00t
 865                  */
 866                 User* InUse = ServerInstance->FindNickOnly(newnick);
 867                 if (InUse && (InUse != this))
 868                 {
 869                         if (InUse->registered != REG_ALL)
 870                         {
 871                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 872                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 873                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 874
 875                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 876                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 877
 878                                 InUse->nick = InUse->uuid;
 879                                 InUse->InvalidateCache();
 880                                 InUse->registered &= ~REG_NICK;
 881                         }
 882                         else
 883                         {
 884                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 885                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 886                                 return false;
 887                         }
 888                 }
 889         }
 890
 891         if (this->registered == REG_ALL)
 892                 this->WriteCommon("NICK %s",newnick.c_str());
 893         std::string oldnick = nick;
 894         nick = newnick;
 895
 896         InvalidateCache();
 897         ServerInstance->Users->clientlist->erase(oldnick);
 898         (*(ServerInstance->Users->clientlist))[newnick] = this;
 899
 900         if (registered == REG_ALL)
 901                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 902
 903         return true;
 904 }
 905
 906 int LocalUser::GetServerPort()
 907 {
 908         switch (this->server_sa.sa.sa_family)
 909         {
 910                 case AF_INET6:
 911                         return htons(this->server_sa.in6.sin6_port);
 912                 case AF_INET:
 913                         return htons(this->server_sa.in4.sin_port);
 914         }
 915         return 0;
 916 }
 917
 918 const std::string& User::GetIPString()
 919 {
 920         int port;
 921         if (cachedip.empty())
 922         {
 923                 irc::sockets::satoap(client_sa, cachedip, port);
 924                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 925                 if (cachedip[0] == ':')
 926                         cachedip.insert(0,1,'0');
 927         }
 928
 929         return cachedip;
 930 }
 931
 932 irc::sockets::cidr_mask User::GetCIDRMask()
 933 {
 934         int range = 0;
 935         switch (client_sa.sa.sa_family)
 936         {
 937                 case AF_INET6:
 938                         range = ServerInstance->Config->c_ipv6_range;
 939                         break;
 940                 case AF_INET:
 941                         range = ServerInstance->Config->c_ipv4_range;
 942                         break;
 943         }
 944         return irc::sockets::cidr_mask(client_sa, range);
 945 }
 946
 947 bool User::SetClientIP(const char* sip, bool recheck_eline)
 948 {
 949         cachedip.clear();
 950         cached_hostip.clear();
 951         return irc::sockets::aptosa(sip, 0, client_sa);
 952 }
 953
 954 void User::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 955 {
 956         cachedip.clear();
 957         cached_hostip.clear();
 958         memcpy(&client_sa, &sa, sizeof(irc::sockets::sockaddrs));
 959 }
 960
 961 bool LocalUser::SetClientIP(const char* sip, bool recheck_eline)
 962 {
 963         irc::sockets::sockaddrs sa;
 964         if (!irc::sockets::aptosa(sip, 0, sa))
 965                 // Invalid
 966                 return false;
 967
 968         LocalUser::SetClientIP(sa, recheck_eline);
 969         return true;
 970 }
 971
 972 void LocalUser::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 973 {
 974         if (sa != client_sa)
 975         {
 976                 User::SetClientIP(sa);
 977                 if (recheck_eline)
 978                         this->exempt = (ServerInstance->XLines->MatchesLine("E", this) != NULL);
 979
 980                 FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(this));
 981         }
 982 }
 983
 984 static std::string wide_newline("\r\n");
 985
 986 void User::Write(const std::string& text)
 987 {
 988 }
 989
 990 void User::Write(const char *text, ...)
 991 {
 992 }
 993
 994 void LocalUser::Write(const std::string& text)
 995 {
 996         if (!ServerInstance->SE->BoundsCheckFd(&eh))
 997                 return;
 998
 999         if (text.length() > MAXBUF - 2)
1000         {
1001                 // this should happen rarely or never. Crop the string at 512 and try again.
1002                 std::string try_again = text.substr(0, MAXBUF - 2);
1003                 Write(try_again);
1004                 return;
1005         }
1006
1007         ServerInstance->Logs->Log("USEROUTPUT", LOG_RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
1008
1009         eh.AddWriteBuf(text);
1010         eh.AddWriteBuf(wide_newline);
1011
1012         ServerInstance->stats->statsSent += text.length() + 2;
1013         this->bytes_out += text.length() + 2;
1014         this->cmds_out++;
1015 }
1016
1017 /** Write()
1018  */
1019 void LocalUser::Write(const char *text, ...)
1020 {
1021         va_list argsPtr;
1022         char textbuffer[MAXBUF];
1023
1024         va_start(argsPtr, text);
1025         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1026         va_end(argsPtr);
1027
1028         this->Write(std::string(textbuffer));
1029 }
1030
1031 void User::WriteServ(const std::string& text)
1032 {
1033         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1034 }
1035
1036 /** WriteServ()
1037  *  Same as Write(), except `text' is prefixed with `:server.name '.
1038  */
1039 void User::WriteServ(const char* text, ...)
1040 {
1041         va_list argsPtr;
1042         char textbuffer[MAXBUF];
1043
1044         va_start(argsPtr, text);
1045         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1046         va_end(argsPtr);
1047
1048         this->WriteServ(std::string(textbuffer));
1049 }
1050
1051 void User::WriteNotice(const std::string& text)
1052 {
1053         this->WriteServ("NOTICE " + (this->registered == REG_ALL ? this->nick : "*") + " :" + text);
1054 }
1055
1056 void User::WriteNumeric(unsigned int numeric, 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->WriteNumeric(numeric, std::string(textbuffer));
1066 }
1067
1068 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1069 {
1070         char textbuffer[MAXBUF];
1071         ModResult MOD_RESULT;
1072
1073         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1074
1075         if (MOD_RESULT == MOD_RES_DENY)
1076                 return;
1077
1078         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1079         this->Write(std::string(textbuffer));
1080 }
1081
1082 void User::WriteFrom(User *user, const std::string &text)
1083 {
1084         const std::string message = ":" + user->GetFullHost() + " " + text;
1085         this->Write(message);
1086 }
1087
1088
1089 /* write text from an originating user to originating user */
1090
1091 void User::WriteFrom(User *user, const char* text, ...)
1092 {
1093         va_list argsPtr;
1094         char textbuffer[MAXBUF];
1095
1096         va_start(argsPtr, text);
1097         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1098         va_end(argsPtr);
1099
1100         this->WriteFrom(user, std::string(textbuffer));
1101 }
1102
1103
1104 /* write text to an destination user from a source user (e.g. user privmsg) */
1105
1106 void User::WriteTo(User *dest, const char *data, ...)
1107 {
1108         char textbuffer[MAXBUF];
1109         va_list argsPtr;
1110
1111         va_start(argsPtr, data);
1112         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1113         va_end(argsPtr);
1114
1115         this->WriteTo(dest, std::string(textbuffer));
1116 }
1117
1118 void User::WriteTo(User *dest, const std::string &data)
1119 {
1120         dest->WriteFrom(this, data);
1121 }
1122
1123 void User::WriteCommon(const char* text, ...)
1124 {
1125         char textbuffer[MAXBUF];
1126         va_list argsPtr;
1127
1128         if (this->registered != REG_ALL || quitting)
1129                 return;
1130
1131         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1132
1133         va_start(argsPtr, text);
1134         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1135         va_end(argsPtr);
1136
1137         this->WriteCommonRaw(std::string(textbuffer), true);
1138 }
1139
1140 void User::WriteCommonExcept(const char* text, ...)
1141 {
1142         char textbuffer[MAXBUF];
1143         va_list argsPtr;
1144
1145         if (this->registered != REG_ALL || quitting)
1146                 return;
1147
1148         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1149
1150         va_start(argsPtr, text);
1151         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1152         va_end(argsPtr);
1153
1154         this->WriteCommonRaw(std::string(textbuffer), false);
1155 }
1156
1157 void User::WriteCommonRaw(const std::string &line, bool include_self)
1158 {
1159         if (this->registered != REG_ALL || quitting)
1160                 return;
1161
1162         LocalUser::already_sent_id++;
1163
1164         UserChanList include_c(chans);
1165         std::map<User*,bool> exceptions;
1166
1167         exceptions[this] = include_self;
1168
1169         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1170
1171         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1172         {
1173                 LocalUser* u = IS_LOCAL(i->first);
1174                 if (u && !u->quitting)
1175                 {
1176                         u->already_sent = LocalUser::already_sent_id;
1177                         if (i->second)
1178                                 u->Write(line);
1179                 }
1180         }
1181         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1182         {
1183                 Channel* c = *v;
1184                 const UserMembList* ulist = c->GetUsers();
1185                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1186                 {
1187                         LocalUser* u = IS_LOCAL(i->first);
1188                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1189                         {
1190                                 u->already_sent = LocalUser::already_sent_id;
1191                                 u->Write(line);
1192                         }
1193                 }
1194         }
1195 }
1196
1197 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1198 {
1199         if (this->registered != REG_ALL)
1200                 return;
1201
1202         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1203
1204         const std::string normalMessage = ":" + this->GetFullHost() + " QUIT :" + normal_text;
1205         const std::string operMessage = ":" + this->GetFullHost() + " QUIT :" + oper_text;
1206
1207         UserChanList include_c(chans);
1208         std::map<User*,bool> exceptions;
1209
1210         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1211
1212         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1213         {
1214                 LocalUser* u = IS_LOCAL(i->first);
1215                 if (u && !u->quitting)
1216                 {
1217                         u->already_sent = uniq_id;
1218                         if (i->second)
1219                                 u->Write(u->IsOper() ? operMessage : normalMessage);
1220                 }
1221         }
1222         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1223         {
1224                 const UserMembList* ulist = (*v)->GetUsers();
1225                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1226                 {
1227                         LocalUser* u = IS_LOCAL(i->first);
1228                         if (u && !u->quitting && (u->already_sent != uniq_id))
1229                         {
1230                                 u->already_sent = uniq_id;
1231                                 u->Write(u->IsOper() ? operMessage : normalMessage);
1232                         }
1233                 }
1234         }
1235 }
1236
1237 void LocalUser::SendText(const std::string& line)
1238 {
1239         Write(line);
1240 }
1241
1242 void RemoteUser::SendText(const std::string& line)
1243 {
1244         ServerInstance->PI->PushToClient(this, line);
1245 }
1246
1247 void FakeUser::SendText(const std::string& line)
1248 {
1249 }
1250
1251 void User::SendText(const char *text, ...)
1252 {
1253         va_list argsPtr;
1254         char line[MAXBUF];
1255
1256         va_start(argsPtr, text);
1257         vsnprintf(line, MAXBUF, text, argsPtr);
1258         va_end(argsPtr);
1259
1260         SendText(std::string(line));
1261 }
1262
1263 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1264 {
1265         char line[MAXBUF];
1266         int start_pos = LinePrefix.length();
1267         int pos = start_pos;
1268         memcpy(line, LinePrefix.data(), pos);
1269         std::string Word;
1270         while (TextStream >> Word)
1271         {
1272                 int len = Word.length();
1273                 if (pos + len + 12 > MAXBUF)
1274                 {
1275                         line[pos] = '\0';
1276                         SendText(std::string(line));
1277                         pos = start_pos;
1278                 }
1279                 line[pos] = ' ';
1280                 memcpy(line + pos + 1, Word.data(), len);
1281                 pos += len + 1;
1282         }
1283         line[pos] = '\0';
1284         SendText(std::string(line));
1285 }
1286
1287 /* return 0 or 1 depending if users u and u2 share one or more common channels
1288  * (used by QUIT, NICK etc which arent channel specific notices)
1289  *
1290  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1291  * the first users channels then the second users channels within the outer loop,
1292  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1293  * all possible iterations). However this new function instead checks against the
1294  * channel's userlist in the inner loop which is a std::map<User*,User*>
1295  * and saves us time as we already know what pointer value we are after.
1296  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1297  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1298  */
1299 bool User::SharesChannelWith(User *other)
1300 {
1301         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1302                 return false;
1303
1304         /* Outer loop */
1305         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1306         {
1307                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1308                  * by replacing it with a map::find which *should* be more efficient
1309                  */
1310                 if ((*i)->HasUser(other))
1311                         return true;
1312         }
1313         return false;
1314 }
1315
1316 bool User::ChangeName(const char* gecos)
1317 {
1318         if (!this->fullname.compare(gecos))
1319                 return true;
1320
1321         if (IS_LOCAL(this))
1322         {
1323                 ModResult MOD_RESULT;
1324                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1325                 if (MOD_RESULT == MOD_RES_DENY)
1326                         return false;
1327                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1328         }
1329         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1330
1331         return true;
1332 }
1333
1334 void User::DoHostCycle(const std::string &quitline)
1335 {
1336         if (!ServerInstance->Config->CycleHosts)
1337                 return;
1338
1339         already_sent_t silent_id = ++LocalUser::already_sent_id;
1340         already_sent_t seen_id = ++LocalUser::already_sent_id;
1341
1342         UserChanList include_c(chans);
1343         std::map<User*,bool> exceptions;
1344
1345         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1346
1347         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1348         {
1349                 LocalUser* u = IS_LOCAL(i->first);
1350                 if (u && !u->quitting)
1351                 {
1352                         if (i->second)
1353                         {
1354                                 u->already_sent = seen_id;
1355                                 u->Write(quitline);
1356                         }
1357                         else
1358                         {
1359                                 u->already_sent = silent_id;
1360                         }
1361                 }
1362         }
1363         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1364         {
1365                 Channel* c = *v;
1366                 Membership* memb = c->GetUser(this);
1367                 const std::string joinline = ":" + GetFullHost() + " JOIN " + c->name;
1368                 std::string modeline;
1369
1370                 if (!memb->modes.empty())
1371                 {
1372                         modeline = ":" + (ServerInstance->Config->CycleHostsFromUser ? GetFullHost() : ServerInstance->Config->ServerName)
1373                                 + " MODE " + c->name + " +" + memb->modes;
1374
1375                         for (size_t i = 0; i < memb->modes.length(); i++)
1376                                 modeline.append(" ").append(nick);
1377                 }
1378
1379                 const UserMembList *ulist = c->GetUsers();
1380                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1381                 {
1382                         LocalUser* u = IS_LOCAL(i->first);
1383                         if (u == NULL || u == this)
1384                                 continue;
1385                         if (u->already_sent == silent_id)
1386                                 continue;
1387
1388                         if (u->already_sent != seen_id)
1389                         {
1390                                 u->Write(quitline);
1391                                 u->already_sent = seen_id;
1392                         }
1393                         u->Write(joinline);
1394                         if (!memb->modes.empty())
1395                                 u->Write(modeline);
1396                 }
1397         }
1398 }
1399
1400 bool User::ChangeDisplayedHost(const char* shost)
1401 {
1402         if (dhost == shost)
1403                 return true;
1404
1405         if (IS_LOCAL(this))
1406         {
1407                 ModResult MOD_RESULT;
1408                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1409                 if (MOD_RESULT == MOD_RES_DENY)
1410                         return false;
1411         }
1412
1413         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1414
1415         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1416
1417         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1418         this->dhost.assign(shost, 0, 64);
1419
1420         this->InvalidateCache();
1421
1422         this->DoHostCycle(quitstr);
1423
1424         if (IS_LOCAL(this))
1425                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1426
1427         return true;
1428 }
1429
1430 bool User::ChangeIdent(const char* newident)
1431 {
1432         if (this->ident == newident)
1433                 return true;
1434
1435         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1436
1437         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1438
1439         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax);
1440
1441         this->InvalidateCache();
1442
1443         this->DoHostCycle(quitstr);
1444
1445         return true;
1446 }
1447
1448 void User::SendAll(const char* command, const char* text, ...)
1449 {
1450         char textbuffer[MAXBUF];
1451         va_list argsPtr;
1452
1453         va_start(argsPtr, text);
1454         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1455         va_end(argsPtr);
1456
1457         const std::string message = ":" + this->GetFullHost() + " " + command + " $* :" + textbuffer;
1458
1459         for (LocalUserList::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1460         {
1461                 if ((*i)->registered == REG_ALL)
1462                         (*i)->Write(message);
1463         }
1464 }
1465
1466 /*
1467  * Sets a user's connection class.
1468  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1469  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1470  * then their ip will be taken as 'priority' anyway, so for example,
1471  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1472  */
1473 void LocalUser::SetClass(const std::string &explicit_name)
1474 {
1475         ConnectClass *found = NULL;
1476
1477         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1478
1479         if (!explicit_name.empty())
1480         {
1481                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1482                 {
1483                         ConnectClass* c = *i;
1484
1485                         if (explicit_name == c->name)
1486                         {
1487                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Explicitly set to %s", explicit_name.c_str());
1488                                 found = c;
1489                         }
1490                 }
1491         }
1492         else
1493         {
1494                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1495                 {
1496                         ConnectClass* c = *i;
1497                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Checking %s", c->GetName().c_str());
1498
1499                         ModResult MOD_RESULT;
1500                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1501                         if (MOD_RESULT == MOD_RES_DENY)
1502                                 continue;
1503                         if (MOD_RESULT == MOD_RES_ALLOW)
1504                         {
1505                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Class forced by module to %s", c->GetName().c_str());
1506                                 found = c;
1507                                 break;
1508                         }
1509
1510                         if (c->type == CC_NAMED)
1511                                 continue;
1512
1513                         bool regdone = (registered != REG_NONE);
1514                         if (c->config->getBool("registered", regdone) != regdone)
1515                                 continue;
1516
1517                         /* check if host matches.. */
1518                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1519                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1520                         {
1521                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "No host match (for %s)", c->GetHost().c_str());
1522                                 continue;
1523                         }
1524
1525                         /*
1526                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1527                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1528                          */
1529                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1530                         {
1531                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1532                                 continue;
1533                         }
1534
1535                         /* if it requires a port ... */
1536                         int port = c->config->getInt("port");
1537                         if (port)
1538                         {
1539                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Requires port (%d)", port);
1540
1541                                 /* and our port doesn't match, fail. */
1542                                 if (this->GetServerPort() != port)
1543                                         continue;
1544                         }
1545
1546                         if (regdone && !c->config->getString("password").empty())
1547                         {
1548                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1549                                 {
1550                                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Bad password, skipping");
1551                                         continue;
1552                                 }
1553                         }
1554
1555                         /* we stop at the first class that meets ALL critera. */
1556                         found = c;
1557                         break;
1558                 }
1559         }
1560
1561         /*
1562          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1563          */
1564         if (found)
1565         {
1566                 MyClass = found;
1567         }
1568 }
1569
1570 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1571  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1572  * then their ip will be taken as 'priority' anyway, so for example,
1573  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1574  */
1575 ConnectClass* LocalUser::GetClass()
1576 {
1577         return MyClass;
1578 }
1579
1580 ConnectClass* User::GetClass()
1581 {
1582         return NULL;
1583 }
1584
1585 void User::PurgeEmptyChannels()
1586 {
1587         // firstly decrement the count on each channel
1588         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1589         {
1590                 Channel* c = *f;
1591                 c->DelUser(this);
1592         }
1593
1594         this->UnOper();
1595 }
1596
1597 const std::string& FakeUser::GetFullHost()
1598 {
1599         if (!ServerInstance->Config->HideWhoisServer.empty())
1600                 return ServerInstance->Config->HideWhoisServer;
1601         return server;
1602 }
1603
1604 const std::string& FakeUser::GetFullRealHost()
1605 {
1606         if (!ServerInstance->Config->HideWhoisServer.empty())
1607                 return ServerInstance->Config->HideWhoisServer;
1608         return server;
1609 }
1610
1611 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1612         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1613         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1614         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0),
1615         limit(0), nouserdns(false)
1616 {
1617 }
1618
1619 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1620         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1621         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1622         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1623         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1624         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1625         limit(parent.limit), nouserdns(parent.nouserdns)
1626 {
1627 }
1628
1629 void ConnectClass::Update(const ConnectClass* src)
1630 {
1631         config = src->config;
1632         type = src->type;
1633         fakelag = src->fakelag;
1634         name = src->name;
1635         registration_timeout = src->registration_timeout;
1636         host = src->host;
1637         pingtime = src->pingtime;
1638         softsendqmax = src->softsendqmax;
1639         hardsendqmax = src->hardsendqmax;
1640         recvqmax = src->recvqmax;
1641         penaltythreshold = src->penaltythreshold;
1642         commandrate = src->commandrate;
1643         maxlocal = src->maxlocal;
1644         maxglobal = src->maxglobal;
1645         maxconnwarn = src->maxconnwarn;
1646         maxchans = src->maxchans;
1647         limit = src->limit;
1648         nouserdns = src->nouserdns;
1649 }