src/users.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2006-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2007, 2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2008 John Brooks <john.brooks@dereferenced.net>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2008 Oliver Lupton <oliverlupton@gmail.com>
  10  *   Copyright (C) 2003-2008 Craig Edwards <craigedwards@brainbox.cc>
  11  *
  12  * This file is part of InspIRCd.  InspIRCd is free software: you can
  13  * redistribute it and/or modify it under the terms of the GNU General Public
  14  * License as published by the Free Software Foundation, version 2.
  15  *
  16  * This program is distributed in the hope that it will be useful, but WITHOUT
  17  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  18  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  19  * details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25
  26 #include "inspircd.h"
  27 #include <stdarg.h>
  28 #include "socketengine.h"
  29 #include "xline.h"
  30 #include "bancache.h"
  31
  32 already_sent_t LocalUser::already_sent_id = 0;
  33
  34 std::string User::ProcessNoticeMasks(const char *sm)
  35 {
  36         bool adding = true, oldadding = false;
  37         const char *c = sm;
  38         std::string output;
  39
  40         while (c && *c)
  41         {
  42                 switch (*c)
  43                 {
  44                         case '+':
  45                                 adding = true;
  46                         break;
  47                         case '-':
  48                                 adding = false;
  49                         break;
  50                         case '*':
  51                                 for (unsigned char d = 'a'; d <= 'z'; d++)
  52                                 {
  53                                         if (!ServerInstance->SNO->masks[d - 'a'].Description.empty())
  54                                         {
  55                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  56                                                 {
  57                                                         if ((oldadding != adding) || (!output.length()))
  58                                                                 output += (adding ? '+' : '-');
  59
  60                                                         this->SetNoticeMask(d, adding);
  61
  62                                                         output += d;
  63                                                 }
  64                                                 oldadding = adding;
  65                                                 char u = toupper(d);
  66                                                 if ((!IsNoticeMaskSet(u) && adding) || (IsNoticeMaskSet(u) && !adding))
  67                                                 {
  68                                                         if ((oldadding != adding) || (!output.length()))
  69                                                                 output += (adding ? '+' : '-');
  70
  71                                                         this->SetNoticeMask(u, adding);
  72
  73                                                         output += u;
  74                                                 }
  75                                                 oldadding = adding;
  76                                         }
  77                                 }
  78                         break;
  79                         default:
  80                                 if (isalpha(*c))
  81                                 {
  82                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  83                                         {
  84                                                 if ((oldadding != adding) || (!output.length()))
  85                                                         output += (adding ? '+' : '-');
  86
  87                                                 this->SetNoticeMask(*c, adding);
  88
  89                                                 output += *c;
  90                                         }
  91                                 }
  92                                 else
  93                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  94
  95                                 oldadding = adding;
  96                         break;
  97                 }
  98
  99                 c++;
 100         }
 101
 102         std::string s = this->FormatNoticeMasks();
 103         if (s.length() == 0)
 104         {
 105                 this->modes[UM_SNOMASK] = false;
 106         }
 107
 108         return output;
 109 }
 110
 111 bool User::IsNoticeMaskSet(unsigned char sm)
 112 {
 113         if (!isalpha(sm))
 114                 return false;
 115         return (snomasks[sm-65]);
 116 }
 117
 118 void User::SetNoticeMask(unsigned char sm, bool value)
 119 {
 120         if (!isalpha(sm))
 121                 return;
 122         snomasks[sm-65] = value;
 123 }
 124
 125 const char* User::FormatNoticeMasks()
 126 {
 127         static char data[MAXBUF];
 128         int offset = 0;
 129
 130         for (int n = 0; n < 64; n++)
 131         {
 132                 if (snomasks[n])
 133                         data[offset++] = n+65;
 134         }
 135
 136         data[offset] = 0;
 137         return data;
 138 }
 139
 140 bool User::IsModeSet(unsigned char m)
 141 {
 142         if (!isalpha(m))
 143                 return false;
 144         return (modes[m-65]);
 145 }
 146
 147 void User::SetMode(unsigned char m, bool value)
 148 {
 149         if (!isalpha(m))
 150                 return;
 151         modes[m-65] = value;
 152 }
 153
 154 const char* User::FormatModes(bool showparameters)
 155 {
 156         static char data[MAXBUF];
 157         std::string params;
 158         int offset = 0;
 159
 160         for (unsigned char n = 0; n < 64; n++)
 161         {
 162                 if (modes[n])
 163                 {
 164                         data[offset++] = n + 65;
 165                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 166                         if (showparameters && mh && mh->GetNumParams(true))
 167                         {
 168                                 std::string p = mh->GetUserParameter(this);
 169                                 if (p.length())
 170                                         params.append(" ").append(p);
 171                         }
 172                 }
 173         }
 174         data[offset] = 0;
 175         strlcat(data, params.c_str(), MAXBUF);
 176         return data;
 177 }
 178
 179 User::User(const std::string &uid, const std::string& sid, int type)
 180         : uuid(uid), server(sid), usertype(type)
 181 {
 182         age = ServerInstance->Time();
 183         signon = 0;
 184         registered = 0;
 185         quietquit = quitting = false;
 186         client_sa.sa.sa_family = AF_UNSPEC;
 187
 188         ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New UUID for user: %s", uuid.c_str());
 189
 190         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 191         if (finduuid == ServerInstance->Users->uuidlist->end())
 192                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 193         else
 194                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 195 }
 196
 197 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 198         : User(ServerInstance->UIDGen.GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 199         localuseriter(ServerInstance->Users->local_users.end()),
 200         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 201         already_sent(0)
 202 {
 203         exempt = quitting_sendq = false;
 204         idle_lastmsg = 0;
 205         ident = "unknown";
 206         lastping = 0;
 207         eh.SetFd(myfd);
 208         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 209         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 210         dhost = host = GetIPString();
 211 }
 212
 213 User::~User()
 214 {
 215         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 216                 ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 217 }
 218
 219 const std::string& User::MakeHost()
 220 {
 221         if (!this->cached_makehost.empty())
 222                 return this->cached_makehost;
 223
 224         char nhost[MAXBUF];
 225         /* This is much faster than snprintf */
 226         char* t = nhost;
 227         for(const char* n = ident.c_str(); *n; n++)
 228                 *t++ = *n;
 229         *t++ = '@';
 230         for(const char* n = host.c_str(); *n; n++)
 231                 *t++ = *n;
 232         *t = 0;
 233
 234         this->cached_makehost.assign(nhost);
 235
 236         return this->cached_makehost;
 237 }
 238
 239 const std::string& User::MakeHostIP()
 240 {
 241         if (!this->cached_hostip.empty())
 242                 return this->cached_hostip;
 243
 244         char ihost[MAXBUF];
 245         /* This is much faster than snprintf */
 246         char* t = ihost;
 247         for(const char* n = ident.c_str(); *n; n++)
 248                 *t++ = *n;
 249         *t++ = '@';
 250         for(const char* n = this->GetIPString().c_str(); *n; n++)
 251                 *t++ = *n;
 252         *t = 0;
 253
 254         this->cached_hostip = ihost;
 255
 256         return this->cached_hostip;
 257 }
 258
 259 const std::string& User::GetFullHost()
 260 {
 261         if (!this->cached_fullhost.empty())
 262                 return this->cached_fullhost;
 263
 264         char result[MAXBUF];
 265         char* t = result;
 266         for(const char* n = nick.c_str(); *n; n++)
 267                 *t++ = *n;
 268         *t++ = '!';
 269         for(const char* n = ident.c_str(); *n; n++)
 270                 *t++ = *n;
 271         *t++ = '@';
 272         for(const char* n = dhost.c_str(); *n; n++)
 273                 *t++ = *n;
 274         *t = 0;
 275
 276         this->cached_fullhost = result;
 277
 278         return this->cached_fullhost;
 279 }
 280
 281 char* User::MakeWildHost()
 282 {
 283         static char nresult[MAXBUF];
 284         char* t = nresult;
 285         *t++ = '*';     *t++ = '!';
 286         *t++ = '*';     *t++ = '@';
 287         for(const char* n = dhost.c_str(); *n; n++)
 288                 *t++ = *n;
 289         *t = 0;
 290         return nresult;
 291 }
 292
 293 const std::string& User::GetFullRealHost()
 294 {
 295         if (!this->cached_fullrealhost.empty())
 296                 return this->cached_fullrealhost;
 297
 298         char fresult[MAXBUF];
 299         char* t = fresult;
 300         for(const char* n = nick.c_str(); *n; n++)
 301                 *t++ = *n;
 302         *t++ = '!';
 303         for(const char* n = ident.c_str(); *n; n++)
 304                 *t++ = *n;
 305         *t++ = '@';
 306         for(const char* n = host.c_str(); *n; n++)
 307                 *t++ = *n;
 308         *t = 0;
 309
 310         this->cached_fullrealhost = fresult;
 311
 312         return this->cached_fullrealhost;
 313 }
 314
 315 InviteList& LocalUser::GetInviteList()
 316 {
 317         RemoveExpiredInvites();
 318         return invites;
 319 }
 320
 321 bool LocalUser::RemoveInvite(Channel* chan)
 322 {
 323         Invitation* inv = Invitation::Find(chan, this);
 324         if (inv)
 325         {
 326                 inv->cull();
 327                 delete inv;
 328                 return true;
 329         }
 330         return false;
 331 }
 332
 333 void LocalUser::RemoveExpiredInvites()
 334 {
 335         Invitation::Find(NULL, this);
 336 }
 337
 338 bool User::HasModePermission(unsigned char, ModeType)
 339 {
 340         return true;
 341 }
 342
 343 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 344 {
 345         if (!this->IsOper())
 346                 return false;
 347
 348         if (mode < 'A' || mode > ('A' + 64)) return false;
 349
 350         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 351
 352 }
 353 /*
 354  * users on remote servers can completely bypass all permissions based checks.
 355  * This prevents desyncs when one server has different type/class tags to another.
 356  * That having been said, this does open things up to the possibility of source changes
 357  * allowing remote kills, etc - but if they have access to the src, they most likely have
 358  * access to the conf - so it's an end to a means either way.
 359  */
 360 bool User::HasPermission(const std::string&)
 361 {
 362         return true;
 363 }
 364
 365 bool LocalUser::HasPermission(const std::string &command)
 366 {
 367         // are they even an oper at all?
 368         if (!this->IsOper())
 369         {
 370                 return false;
 371         }
 372
 373         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 374                 return true;
 375         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 376                 return true;
 377
 378         return false;
 379 }
 380
 381 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 382 {
 383         return true;
 384 }
 385
 386 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 387 {
 388         if (!this->IsOper())
 389         {
 390                 if (noisy)
 391                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 392                 return false;
 393         }
 394
 395         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 396         {
 397                 return true;
 398         }
 399         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 400         {
 401                 return true;
 402         }
 403
 404         if (noisy)
 405                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), oper->NameStr(), privstr.c_str());
 406         return false;
 407 }
 408
 409 void UserIOHandler::OnDataReady()
 410 {
 411         if (user->quitting)
 412                 return;
 413
 414         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 415         {
 416                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 417                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 418                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 419         }
 420         unsigned long sendqmax = ULONG_MAX;
 421         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 422                 sendqmax = user->MyClass->GetSendqSoftMax();
 423         unsigned long penaltymax = ULONG_MAX;
 424         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 425                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 426
 427         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 428         {
 429                 std::string line;
 430                 line.reserve(MAXBUF);
 431                 std::string::size_type qpos = 0;
 432                 while (qpos < recvq.length())
 433                 {
 434                         char c = recvq[qpos++];
 435                         switch (c)
 436                         {
 437                         case '\0':
 438                                 c = ' ';
 439                                 break;
 440                         case '\r':
 441                                 continue;
 442                         case '\n':
 443                                 goto eol_found;
 444                         }
 445                         if (line.length() < MAXBUF - 2)
 446                                 line.push_back(c);
 447                 }
 448                 // if we got here, the recvq ran out before we found a newline
 449                 return;
 450 eol_found:
 451                 // just found a newline. Terminate the string, and pull it out of recvq
 452                 recvq = recvq.substr(qpos);
 453
 454                 // TODO should this be moved to when it was inserted in recvq?
 455                 ServerInstance->stats->statsRecv += qpos;
 456                 user->bytes_in += qpos;
 457                 user->cmds_in++;
 458
 459                 ServerInstance->Parser->ProcessBuffer(line, user);
 460                 if (user->quitting)
 461                         return;
 462         }
 463         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 464                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 465 }
 466
 467 void UserIOHandler::AddWriteBuf(const std::string &data)
 468 {
 469         if (user->quitting_sendq)
 470                 return;
 471         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 472                 !user->HasPrivPermission("users/flood/increased-buffers"))
 473         {
 474                 user->quitting_sendq = true;
 475                 ServerInstance->GlobalCulls.AddSQItem(user);
 476                 return;
 477         }
 478
 479         // We still want to append data to the sendq of a quitting user,
 480         // e.g. their ERROR message that says 'closing link'
 481
 482         WriteData(data);
 483 }
 484
 485 void UserIOHandler::OnError(BufferedSocketError)
 486 {
 487         ServerInstance->Users->QuitUser(user, getError());
 488 }
 489
 490 CullResult User::cull()
 491 {
 492         if (!quitting)
 493                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 494         PurgeEmptyChannels();
 495
 496         if (client_sa.sa.sa_family != AF_UNSPEC)
 497                 ServerInstance->Users->RemoveCloneCounts(this);
 498
 499         return Extensible::cull();
 500 }
 501
 502 CullResult LocalUser::cull()
 503 {
 504         // The iterator is initialized to local_users.end() in the constructor. It is
 505         // overwritten in UserManager::AddUser() with the real iterator so this check
 506         // is only a precaution currently.
 507         if (localuseriter != ServerInstance->Users->local_users.end())
 508                 ServerInstance->Users->local_users.erase(localuseriter);
 509
 510         ClearInvites();
 511         eh.cull();
 512         return User::cull();
 513 }
 514
 515 CullResult FakeUser::cull()
 516 {
 517         // Fake users don't quit, they just get culled.
 518         quitting = true;
 519         ServerInstance->Users->clientlist->erase(nick);
 520         ServerInstance->Users->uuidlist->erase(uuid);
 521         return User::cull();
 522 }
 523
 524 void User::Oper(OperInfo* info)
 525 {
 526         if (this->IsModeSet('o'))
 527                 this->UnOper();
 528
 529         this->modes[UM_OPERATOR] = 1;
 530         this->oper = info;
 531         this->WriteServ("MODE %s :+o", this->nick.c_str());
 532         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 533
 534         std::string opername;
 535         if (info->oper_block)
 536                 opername = info->oper_block->getString("name");
 537
 538         if (IS_LOCAL(this))
 539         {
 540                 LocalUser* l = IS_LOCAL(this);
 541                 std::string vhost = oper->getConfig("vhost");
 542                 if (!vhost.empty())
 543                         l->ChangeDisplayedHost(vhost.c_str());
 544                 std::string opClass = oper->getConfig("class");
 545                 if (!opClass.empty())
 546                         l->SetClass(opClass);
 547         }
 548
 549         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 550                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 551         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 552
 553         ServerInstance->Logs->Log("OPER", LOG_DEFAULT, "%s opered as type: %s", GetFullRealHost().c_str(), oper->NameStr());
 554         ServerInstance->Users->all_opers.push_back(this);
 555
 556         // Expand permissions from config for faster lookup
 557         if (IS_LOCAL(this))
 558                 oper->init();
 559
 560         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 561 }
 562
 563 void OperInfo::init()
 564 {
 565         AllowedOperCommands.clear();
 566         AllowedPrivs.clear();
 567         AllowedUserModes.reset();
 568         AllowedChanModes.reset();
 569         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 570
 571         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 572         {
 573                 ConfigTag* tag = *iter;
 574                 std::string mycmd, mypriv;
 575                 /* Process commands */
 576                 irc::spacesepstream CommandList(tag->getString("commands"));
 577                 while (CommandList.GetToken(mycmd))
 578                 {
 579                         AllowedOperCommands.insert(mycmd);
 580                 }
 581
 582                 irc::spacesepstream PrivList(tag->getString("privs"));
 583                 while (PrivList.GetToken(mypriv))
 584                 {
 585                         AllowedPrivs.insert(mypriv);
 586                 }
 587
 588                 std::string modes = tag->getString("usermodes");
 589                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 590                 {
 591                         if (*c == '*')
 592                         {
 593                                 this->AllowedUserModes.set();
 594                         }
 595                         else if (*c >= 'A' && *c < 'z')
 596                         {
 597                                 this->AllowedUserModes[*c - 'A'] = true;
 598                         }
 599                 }
 600
 601                 modes = tag->getString("chanmodes");
 602                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 603                 {
 604                         if (*c == '*')
 605                         {
 606                                 this->AllowedChanModes.set();
 607                         }
 608                         else if (*c >= 'A' && *c < 'z')
 609                         {
 610                                 this->AllowedChanModes[*c - 'A'] = true;
 611                         }
 612                 }
 613         }
 614 }
 615
 616 void User::UnOper()
 617 {
 618         if (!this->IsOper())
 619                 return;
 620
 621         /*
 622          * unset their oper type (what IS_OPER checks).
 623          * note, order is important - this must come before modes as -o attempts
 624          * to call UnOper. -- w00t
 625          */
 626         oper = NULL;
 627
 628
 629         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 630         std::string moderemove("-");
 631
 632         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 633         {
 634                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 635                 if (mh && mh->NeedsOper())
 636                         moderemove += letter;
 637         }
 638
 639
 640         std::vector<std::string> parameters;
 641         parameters.push_back(this->nick);
 642         parameters.push_back(moderemove);
 643
 644         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 645
 646         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 647         ServerInstance->Users->all_opers.remove(this);
 648
 649         this->modes[UM_OPERATOR] = 0;
 650 }
 651
 652 /*
 653  * Check class restrictions
 654  */
 655 void LocalUser::CheckClass()
 656 {
 657         ConnectClass* a = this->MyClass;
 658
 659         if (!a)
 660         {
 661                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 662                 return;
 663         }
 664         else if (a->type == CC_DENY)
 665         {
 666                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 667                 return;
 668         }
 669         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 670         {
 671                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 672                 if (a->maxconnwarn)
 673                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString().c_str());
 674                 return;
 675         }
 676         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 677         {
 678                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 679                 if (a->maxconnwarn)
 680                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString().c_str());
 681                 return;
 682         }
 683
 684         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 685 }
 686
 687 bool LocalUser::CheckLines(bool doZline)
 688 {
 689         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 690
 691         if (!this->exempt)
 692         {
 693                 for (int n = 0; check[n]; ++n)
 694                 {
 695                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 696
 697                         if (r)
 698                         {
 699                                 r->Apply(this);
 700                                 return true;
 701                         }
 702                 }
 703         }
 704
 705         return false;
 706 }
 707
 708 void LocalUser::FullConnect()
 709 {
 710         ServerInstance->stats->statsConnects++;
 711         this->idle_lastmsg = ServerInstance->Time();
 712
 713         /*
 714          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 715          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 716          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 717          * Don't remove this! -- w00t
 718          */
 719         MyClass = NULL;
 720         SetClass();
 721         CheckClass();
 722         CheckLines();
 723
 724         if (quitting)
 725                 return;
 726
 727         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str());
 728         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version %s",this->nick.c_str(),ServerInstance->Config->ServerName.c_str(),BRANCH);
 729         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 730
 731         std::string umlist = ServerInstance->Modes->UserModeList();
 732         std::string cmlist = ServerInstance->Modes->ChannelModeList();
 733         std::string pmlist = ServerInstance->Modes->ParaModeList();
 734         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());
 735
 736         ServerInstance->ISupport.SendTo(this);
 737         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 738
 739         /* Now registered */
 740         if (ServerInstance->Users->unregistered_count)
 741                 ServerInstance->Users->unregistered_count--;
 742
 743         /* Trigger MOTD and LUSERS output, give modules a chance too */
 744         ModResult MOD_RESULT;
 745         std::string command("LUSERS");
 746         std::vector<std::string> parameters;
 747         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 748         if (!MOD_RESULT)
 749                 ServerInstance->Parser->CallHandler(command, parameters, this);
 750
 751         MOD_RESULT = MOD_RES_PASSTHRU;
 752         command = "MOTD";
 753         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 754         if (!MOD_RESULT)
 755                 ServerInstance->Parser->CallHandler(command, parameters, this);
 756
 757         if (ServerInstance->Config->RawLog)
 758                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 759
 760         /*
 761          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 762          * for a user that doesn't exist yet.
 763          */
 764         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 765
 766         this->registered = REG_ALL;
 767
 768         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 769
 770         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d (class %s): %s (%s) [%s]",
 771                 this->GetServerPort(), this->MyClass->name.c_str(), GetFullRealHost().c_str(), this->GetIPString().c_str(), this->fullname.c_str());
 772         ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Adding NEGATIVE hit for " + this->GetIPString());
 773         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 774         // reset the flood penalty (which could have been raised due to things like auto +x)
 775         CommandFloodPenalty = 0;
 776 }
 777
 778 void User::InvalidateCache()
 779 {
 780         /* Invalidate cache */
 781         cached_fullhost.clear();
 782         cached_hostip.clear();
 783         cached_makehost.clear();
 784         cached_fullrealhost.clear();
 785 }
 786
 787 bool User::ChangeNick(const std::string& newnick, bool force)
 788 {
 789         ModResult MOD_RESULT;
 790
 791         if (force)
 792                 ServerInstance->NICKForced.set(this, 1);
 793         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 794         ServerInstance->NICKForced.set(this, 0);
 795
 796         if (MOD_RESULT == MOD_RES_DENY)
 797         {
 798                 ServerInstance->stats->statsCollisions++;
 799                 return false;
 800         }
 801
 802         if (assign(newnick) == assign(nick))
 803         {
 804                 // case change, don't need to check Q:lines and such
 805                 // and, if it's identical including case, we can leave right now
 806                 if (newnick == nick)
 807                         return true;
 808         }
 809         else
 810         {
 811                 /*
 812                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 813                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 814                  * Thanks Kein for finding this. -- w00t
 815                  *
 816                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 817                  *              -- w00t
 818                  */
 819                 if (IS_LOCAL(this) && !force)
 820                 {
 821                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 822                         if (mq)
 823                         {
 824                                 if (this->registered == REG_ALL)
 825                                 {
 826                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s: %s",
 827                                                 newnick.c_str(), GetFullRealHost().c_str(), mq->reason.c_str());
 828                                 }
 829                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 830                                 return false;
 831                         }
 832
 833                         if (ServerInstance->Config->RestrictBannedUsers)
 834                         {
 835                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 836                                 {
 837                                         Channel *chan = *i;
 838                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 839                                         {
 840                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 841                                                 return false;
 842                                         }
 843                                 }
 844                         }
 845                 }
 846
 847                 /*
 848                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 849                  * then we have a potential collide. Check whether someone else is camping on the nick
 850                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 851                  * camper to their UID, and allow the incoming nick change.
 852                  *
 853                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 854                  * because the nick is already (rightfully) in use. -- w00t
 855                  */
 856                 User* InUse = ServerInstance->FindNickOnly(newnick);
 857                 if (InUse && (InUse != this))
 858                 {
 859                         if (InUse->registered != REG_ALL)
 860                         {
 861                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 862                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 863                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 864
 865                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 866                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 867
 868                                 InUse->nick = InUse->uuid;
 869                                 InUse->InvalidateCache();
 870                                 InUse->registered &= ~REG_NICK;
 871                         }
 872                         else
 873                         {
 874                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 875                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 876                                 return false;
 877                         }
 878                 }
 879         }
 880
 881         if (this->registered == REG_ALL)
 882                 this->WriteCommon("NICK %s",newnick.c_str());
 883         std::string oldnick = nick;
 884         nick = newnick;
 885
 886         InvalidateCache();
 887         ServerInstance->Users->clientlist->erase(oldnick);
 888         (*(ServerInstance->Users->clientlist))[newnick] = this;
 889
 890         if (registered == REG_ALL)
 891                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 892
 893         return true;
 894 }
 895
 896 int LocalUser::GetServerPort()
 897 {
 898         switch (this->server_sa.sa.sa_family)
 899         {
 900                 case AF_INET6:
 901                         return htons(this->server_sa.in6.sin6_port);
 902                 case AF_INET:
 903                         return htons(this->server_sa.in4.sin_port);
 904         }
 905         return 0;
 906 }
 907
 908 const std::string& User::GetIPString()
 909 {
 910         int port;
 911         if (cachedip.empty())
 912         {
 913                 irc::sockets::satoap(client_sa, cachedip, port);
 914                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 915                 if (cachedip[0] == ':')
 916                         cachedip.insert(0,1,'0');
 917         }
 918
 919         return cachedip;
 920 }
 921
 922 irc::sockets::cidr_mask User::GetCIDRMask()
 923 {
 924         int range = 0;
 925         switch (client_sa.sa.sa_family)
 926         {
 927                 case AF_INET6:
 928                         range = ServerInstance->Config->c_ipv6_range;
 929                         break;
 930                 case AF_INET:
 931                         range = ServerInstance->Config->c_ipv4_range;
 932                         break;
 933         }
 934         return irc::sockets::cidr_mask(client_sa, range);
 935 }
 936
 937 bool User::SetClientIP(const char* sip, bool recheck_eline)
 938 {
 939         cachedip.clear();
 940         cached_hostip.clear();
 941         return irc::sockets::aptosa(sip, 0, client_sa);
 942 }
 943
 944 void User::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 945 {
 946         cachedip.clear();
 947         cached_hostip.clear();
 948         memcpy(&client_sa, &sa, sizeof(irc::sockets::sockaddrs));
 949 }
 950
 951 bool LocalUser::SetClientIP(const char* sip, bool recheck_eline)
 952 {
 953         irc::sockets::sockaddrs sa;
 954         if (!irc::sockets::aptosa(sip, 0, sa))
 955                 // Invalid
 956                 return false;
 957
 958         LocalUser::SetClientIP(sa, recheck_eline);
 959         return true;
 960 }
 961
 962 void LocalUser::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 963 {
 964         if (sa != client_sa)
 965         {
 966                 User::SetClientIP(sa);
 967                 if (recheck_eline)
 968                         this->exempt = (ServerInstance->XLines->MatchesLine("E", this) != NULL);
 969
 970                 FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(this));
 971         }
 972 }
 973
 974 static std::string wide_newline("\r\n");
 975
 976 void User::Write(const std::string& text)
 977 {
 978 }
 979
 980 void User::Write(const char *text, ...)
 981 {
 982 }
 983
 984 void LocalUser::Write(const std::string& text)
 985 {
 986         if (!ServerInstance->SE->BoundsCheckFd(&eh))
 987                 return;
 988
 989         if (text.length() > MAXBUF - 2)
 990         {
 991                 // this should happen rarely or never. Crop the string at 512 and try again.
 992                 std::string try_again = text.substr(0, MAXBUF - 2);
 993                 Write(try_again);
 994                 return;
 995         }
 996
 997         ServerInstance->Logs->Log("USEROUTPUT", LOG_RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
 998
 999         eh.AddWriteBuf(text);
1000         eh.AddWriteBuf(wide_newline);
1001
1002         ServerInstance->stats->statsSent += text.length() + 2;
1003         this->bytes_out += text.length() + 2;
1004         this->cmds_out++;
1005 }
1006
1007 /** Write()
1008  */
1009 void LocalUser::Write(const char *text, ...)
1010 {
1011         va_list argsPtr;
1012         char textbuffer[MAXBUF];
1013
1014         va_start(argsPtr, text);
1015         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1016         va_end(argsPtr);
1017
1018         this->Write(std::string(textbuffer));
1019 }
1020
1021 void User::WriteServ(const std::string& text)
1022 {
1023         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1024 }
1025
1026 /** WriteServ()
1027  *  Same as Write(), except `text' is prefixed with `:server.name '.
1028  */
1029 void User::WriteServ(const char* text, ...)
1030 {
1031         va_list argsPtr;
1032         char textbuffer[MAXBUF];
1033
1034         va_start(argsPtr, text);
1035         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1036         va_end(argsPtr);
1037
1038         this->WriteServ(std::string(textbuffer));
1039 }
1040
1041
1042 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1043 {
1044         va_list argsPtr;
1045         char textbuffer[MAXBUF];
1046
1047         va_start(argsPtr, text);
1048         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1049         va_end(argsPtr);
1050
1051         this->WriteNumeric(numeric, std::string(textbuffer));
1052 }
1053
1054 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1055 {
1056         char textbuffer[MAXBUF];
1057         ModResult MOD_RESULT;
1058
1059         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1060
1061         if (MOD_RESULT == MOD_RES_DENY)
1062                 return;
1063
1064         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1065         this->Write(std::string(textbuffer));
1066 }
1067
1068 void User::WriteFrom(User *user, const std::string &text)
1069 {
1070         char tb[MAXBUF];
1071
1072         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1073
1074         this->Write(std::string(tb));
1075 }
1076
1077
1078 /* write text from an originating user to originating user */
1079
1080 void User::WriteFrom(User *user, const char* text, ...)
1081 {
1082         va_list argsPtr;
1083         char textbuffer[MAXBUF];
1084
1085         va_start(argsPtr, text);
1086         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1087         va_end(argsPtr);
1088
1089         this->WriteFrom(user, std::string(textbuffer));
1090 }
1091
1092
1093 /* write text to an destination user from a source user (e.g. user privmsg) */
1094
1095 void User::WriteTo(User *dest, const char *data, ...)
1096 {
1097         char textbuffer[MAXBUF];
1098         va_list argsPtr;
1099
1100         va_start(argsPtr, data);
1101         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1102         va_end(argsPtr);
1103
1104         this->WriteTo(dest, std::string(textbuffer));
1105 }
1106
1107 void User::WriteTo(User *dest, const std::string &data)
1108 {
1109         dest->WriteFrom(this, data);
1110 }
1111
1112 void User::WriteCommon(const char* text, ...)
1113 {
1114         char textbuffer[MAXBUF];
1115         va_list argsPtr;
1116
1117         if (this->registered != REG_ALL || quitting)
1118                 return;
1119
1120         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1121
1122         va_start(argsPtr, text);
1123         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1124         va_end(argsPtr);
1125
1126         this->WriteCommonRaw(std::string(textbuffer), true);
1127 }
1128
1129 void User::WriteCommonExcept(const char* text, ...)
1130 {
1131         char textbuffer[MAXBUF];
1132         va_list argsPtr;
1133
1134         if (this->registered != REG_ALL || quitting)
1135                 return;
1136
1137         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1138
1139         va_start(argsPtr, text);
1140         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1141         va_end(argsPtr);
1142
1143         this->WriteCommonRaw(std::string(textbuffer), false);
1144 }
1145
1146 void User::WriteCommonRaw(const std::string &line, bool include_self)
1147 {
1148         if (this->registered != REG_ALL || quitting)
1149                 return;
1150
1151         LocalUser::already_sent_id++;
1152
1153         UserChanList include_c(chans);
1154         std::map<User*,bool> exceptions;
1155
1156         exceptions[this] = include_self;
1157
1158         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1159
1160         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1161         {
1162                 LocalUser* u = IS_LOCAL(i->first);
1163                 if (u && !u->quitting)
1164                 {
1165                         u->already_sent = LocalUser::already_sent_id;
1166                         if (i->second)
1167                                 u->Write(line);
1168                 }
1169         }
1170         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1171         {
1172                 Channel* c = *v;
1173                 const UserMembList* ulist = c->GetUsers();
1174                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1175                 {
1176                         LocalUser* u = IS_LOCAL(i->first);
1177                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1178                         {
1179                                 u->already_sent = LocalUser::already_sent_id;
1180                                 u->Write(line);
1181                         }
1182                 }
1183         }
1184 }
1185
1186 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1187 {
1188         char tb1[MAXBUF];
1189         char tb2[MAXBUF];
1190
1191         if (this->registered != REG_ALL)
1192                 return;
1193
1194         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1195
1196         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1197         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1198         std::string out1 = tb1;
1199         std::string out2 = tb2;
1200
1201         UserChanList include_c(chans);
1202         std::map<User*,bool> exceptions;
1203
1204         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1205
1206         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1207         {
1208                 LocalUser* u = IS_LOCAL(i->first);
1209                 if (u && !u->quitting)
1210                 {
1211                         u->already_sent = uniq_id;
1212                         if (i->second)
1213                                 u->Write(u->IsOper() ? out2 : out1);
1214                 }
1215         }
1216         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1217         {
1218                 const UserMembList* ulist = (*v)->GetUsers();
1219                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1220                 {
1221                         LocalUser* u = IS_LOCAL(i->first);
1222                         if (u && !u->quitting && (u->already_sent != uniq_id))
1223                         {
1224                                 u->already_sent = uniq_id;
1225                                 u->Write(u->IsOper() ? out2 : out1);
1226                         }
1227                 }
1228         }
1229 }
1230
1231 void LocalUser::SendText(const std::string& line)
1232 {
1233         Write(line);
1234 }
1235
1236 void RemoteUser::SendText(const std::string& line)
1237 {
1238         ServerInstance->PI->PushToClient(this, line);
1239 }
1240
1241 void FakeUser::SendText(const std::string& line)
1242 {
1243 }
1244
1245 void User::SendText(const char *text, ...)
1246 {
1247         va_list argsPtr;
1248         char line[MAXBUF];
1249
1250         va_start(argsPtr, text);
1251         vsnprintf(line, MAXBUF, text, argsPtr);
1252         va_end(argsPtr);
1253
1254         SendText(std::string(line));
1255 }
1256
1257 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1258 {
1259         char line[MAXBUF];
1260         int start_pos = LinePrefix.length();
1261         int pos = start_pos;
1262         memcpy(line, LinePrefix.data(), pos);
1263         std::string Word;
1264         while (TextStream >> Word)
1265         {
1266                 int len = Word.length();
1267                 if (pos + len + 12 > MAXBUF)
1268                 {
1269                         line[pos] = '\0';
1270                         SendText(std::string(line));
1271                         pos = start_pos;
1272                 }
1273                 line[pos] = ' ';
1274                 memcpy(line + pos + 1, Word.data(), len);
1275                 pos += len + 1;
1276         }
1277         line[pos] = '\0';
1278         SendText(std::string(line));
1279 }
1280
1281 /* return 0 or 1 depending if users u and u2 share one or more common channels
1282  * (used by QUIT, NICK etc which arent channel specific notices)
1283  *
1284  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1285  * the first users channels then the second users channels within the outer loop,
1286  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1287  * all possible iterations). However this new function instead checks against the
1288  * channel's userlist in the inner loop which is a std::map<User*,User*>
1289  * and saves us time as we already know what pointer value we are after.
1290  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1291  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1292  */
1293 bool User::SharesChannelWith(User *other)
1294 {
1295         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1296                 return false;
1297
1298         /* Outer loop */
1299         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1300         {
1301                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1302                  * by replacing it with a map::find which *should* be more efficient
1303                  */
1304                 if ((*i)->HasUser(other))
1305                         return true;
1306         }
1307         return false;
1308 }
1309
1310 bool User::ChangeName(const char* gecos)
1311 {
1312         if (!this->fullname.compare(gecos))
1313                 return true;
1314
1315         if (IS_LOCAL(this))
1316         {
1317                 ModResult MOD_RESULT;
1318                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1319                 if (MOD_RESULT == MOD_RES_DENY)
1320                         return false;
1321                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1322         }
1323         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1324
1325         return true;
1326 }
1327
1328 void User::DoHostCycle(const std::string &quitline)
1329 {
1330         char buffer[MAXBUF];
1331
1332         if (!ServerInstance->Config->CycleHosts)
1333                 return;
1334
1335         already_sent_t silent_id = ++LocalUser::already_sent_id;
1336         already_sent_t seen_id = ++LocalUser::already_sent_id;
1337
1338         UserChanList include_c(chans);
1339         std::map<User*,bool> exceptions;
1340
1341         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1342
1343         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1344         {
1345                 LocalUser* u = IS_LOCAL(i->first);
1346                 if (u && !u->quitting)
1347                 {
1348                         if (i->second)
1349                         {
1350                                 u->already_sent = seen_id;
1351                                 u->Write(quitline);
1352                         }
1353                         else
1354                         {
1355                                 u->already_sent = silent_id;
1356                         }
1357                 }
1358         }
1359         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1360         {
1361                 Channel* c = *v;
1362                 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1363                 std::string joinline(buffer);
1364                 Membership* memb = c->GetUser(this);
1365                 std::string modeline = memb->modes;
1366                 if (modeline.length() > 0)
1367                 {
1368                         for(unsigned int i=0; i < memb->modes.length(); i++)
1369                                 modeline.append(" ").append(nick);
1370                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s",
1371                                 ServerInstance->Config->CycleHostsFromUser ? GetFullHost().c_str() : ServerInstance->Config->ServerName.c_str(),
1372                                 c->name.c_str(), modeline.c_str());
1373                         modeline = buffer;
1374                 }
1375
1376                 const UserMembList *ulist = c->GetUsers();
1377                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1378                 {
1379                         LocalUser* u = IS_LOCAL(i->first);
1380                         if (u == NULL || u == this)
1381                                 continue;
1382                         if (u->already_sent == silent_id)
1383                                 continue;
1384
1385                         if (u->already_sent != seen_id)
1386                         {
1387                                 u->Write(quitline);
1388                                 u->already_sent = seen_id;
1389                         }
1390                         u->Write(joinline);
1391                         if (modeline.length() > 0)
1392                                 u->Write(modeline);
1393                 }
1394         }
1395 }
1396
1397 bool User::ChangeDisplayedHost(const char* shost)
1398 {
1399         if (dhost == shost)
1400                 return true;
1401
1402         if (IS_LOCAL(this))
1403         {
1404                 ModResult MOD_RESULT;
1405                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1406                 if (MOD_RESULT == MOD_RES_DENY)
1407                         return false;
1408         }
1409
1410         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1411
1412         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1413
1414         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1415         this->dhost.assign(shost, 0, 64);
1416
1417         this->InvalidateCache();
1418
1419         this->DoHostCycle(quitstr);
1420
1421         if (IS_LOCAL(this))
1422                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1423
1424         return true;
1425 }
1426
1427 bool User::ChangeIdent(const char* newident)
1428 {
1429         if (this->ident == newident)
1430                 return true;
1431
1432         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1433
1434         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1435
1436         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax);
1437
1438         this->InvalidateCache();
1439
1440         this->DoHostCycle(quitstr);
1441
1442         return true;
1443 }
1444
1445 void User::SendAll(const char* command, const char* text, ...)
1446 {
1447         char textbuffer[MAXBUF];
1448         char formatbuffer[MAXBUF];
1449         va_list argsPtr;
1450
1451         va_start(argsPtr, text);
1452         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1453         va_end(argsPtr);
1454
1455         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1456         std::string fmt = formatbuffer;
1457
1458         for (LocalUserList::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1459         {
1460                 if ((*i)->registered == REG_ALL)
1461                         (*i)->Write(fmt);
1462         }
1463 }
1464
1465 /*
1466  * Sets a user's connection class.
1467  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1468  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1469  * then their ip will be taken as 'priority' anyway, so for example,
1470  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1471  */
1472 void LocalUser::SetClass(const std::string &explicit_name)
1473 {
1474         ConnectClass *found = NULL;
1475
1476         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1477
1478         if (!explicit_name.empty())
1479         {
1480                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1481                 {
1482                         ConnectClass* c = *i;
1483
1484                         if (explicit_name == c->name)
1485                         {
1486                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Explicitly set to %s", explicit_name.c_str());
1487                                 found = c;
1488                         }
1489                 }
1490         }
1491         else
1492         {
1493                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1494                 {
1495                         ConnectClass* c = *i;
1496                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Checking %s", c->GetName().c_str());
1497
1498                         ModResult MOD_RESULT;
1499                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1500                         if (MOD_RESULT == MOD_RES_DENY)
1501                                 continue;
1502                         if (MOD_RESULT == MOD_RES_ALLOW)
1503                         {
1504                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Class forced by module to %s", c->GetName().c_str());
1505                                 found = c;
1506                                 break;
1507                         }
1508
1509                         if (c->type == CC_NAMED)
1510                                 continue;
1511
1512                         bool regdone = (registered != REG_NONE);
1513                         if (c->config->getBool("registered", regdone) != regdone)
1514                                 continue;
1515
1516                         /* check if host matches.. */
1517                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1518                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1519                         {
1520                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "No host match (for %s)", c->GetHost().c_str());
1521                                 continue;
1522                         }
1523
1524                         /*
1525                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1526                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1527                          */
1528                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1529                         {
1530                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1531                                 continue;
1532                         }
1533
1534                         /* if it requires a port ... */
1535                         int port = c->config->getInt("port");
1536                         if (port)
1537                         {
1538                                 ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Requires port (%d)", port);
1539
1540                                 /* and our port doesn't match, fail. */
1541                                 if (this->GetServerPort() != port)
1542                                         continue;
1543                         }
1544
1545                         if (regdone && !c->config->getString("password").empty())
1546                         {
1547                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1548                                 {
1549                                         ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Bad password, skipping");
1550                                         continue;
1551                                 }
1552                         }
1553
1554                         /* we stop at the first class that meets ALL critera. */
1555                         found = c;
1556                         break;
1557                 }
1558         }
1559
1560         /*
1561          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1562          */
1563         if (found)
1564         {
1565                 MyClass = found;
1566         }
1567 }
1568
1569 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1570  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1571  * then their ip will be taken as 'priority' anyway, so for example,
1572  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1573  */
1574 ConnectClass* LocalUser::GetClass()
1575 {
1576         return MyClass;
1577 }
1578
1579 ConnectClass* User::GetClass()
1580 {
1581         return NULL;
1582 }
1583
1584 void User::PurgeEmptyChannels()
1585 {
1586         // firstly decrement the count on each channel
1587         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1588         {
1589                 Channel* c = *f;
1590                 c->DelUser(this);
1591         }
1592
1593         this->UnOper();
1594 }
1595
1596 const std::string& FakeUser::GetFullHost()
1597 {
1598         if (!ServerInstance->Config->HideWhoisServer.empty())
1599                 return ServerInstance->Config->HideWhoisServer;
1600         return server;
1601 }
1602
1603 const std::string& FakeUser::GetFullRealHost()
1604 {
1605         if (!ServerInstance->Config->HideWhoisServer.empty())
1606                 return ServerInstance->Config->HideWhoisServer;
1607         return server;
1608 }
1609
1610 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1611         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1612         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1613         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0),
1614         limit(0), nouserdns(false)
1615 {
1616 }
1617
1618 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1619         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1620         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1621         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1622         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1623         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1624         limit(parent.limit), nouserdns(parent.nouserdns)
1625 {
1626 }
1627
1628 void ConnectClass::Update(const ConnectClass* src)
1629 {
1630         config = src->config;
1631         type = src->type;
1632         fakelag = src->fakelag;
1633         name = src->name;
1634         registration_timeout = src->registration_timeout;
1635         host = src->host;
1636         pingtime = src->pingtime;
1637         softsendqmax = src->softsendqmax;
1638         hardsendqmax = src->hardsendqmax;
1639         recvqmax = src->recvqmax;
1640         penaltythreshold = src->penaltythreshold;
1641         commandrate = src->commandrate;
1642         maxlocal = src->maxlocal;
1643         maxglobal = src->maxglobal;
1644         maxconnwarn = src->maxconnwarn;
1645         maxchans = src->maxchans;
1646         limit = src->limit;
1647         nouserdns = src->nouserdns;
1648 }