src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include <stdarg.h>
  16 #include "socketengine.h"
  17 #include "xline.h"
  18 #include "bancache.h"
  19 #include "commands/cmd_whowas.h"
  20
  21 already_sent_t LocalUser::already_sent_id = 0;
  22
  23 std::string User::ProcessNoticeMasks(const char *sm)
  24 {
  25         bool adding = true, oldadding = false;
  26         const char *c = sm;
  27         std::string output;
  28
  29         while (c && *c)
  30         {
  31                 switch (*c)
  32                 {
  33                         case '+':
  34                                 adding = true;
  35                         break;
  36                         case '-':
  37                                 adding = false;
  38                         break;
  39                         case '*':
  40                                 for (unsigned char d = 'a'; d <= 'z'; d++)
  41                                 {
  42                                         if (!ServerInstance->SNO->masks[d - 'a'].Description.empty())
  43                                         {
  44                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  45                                                 {
  46                                                         if ((oldadding != adding) || (!output.length()))
  47                                                                 output += (adding ? '+' : '-');
  48
  49                                                         this->SetNoticeMask(d, adding);
  50
  51                                                         output += d;
  52                                                 }
  53                                                 oldadding = adding;
  54                                                 char u = toupper(d);
  55                                                 if ((!IsNoticeMaskSet(u) && adding) || (IsNoticeMaskSet(u) && !adding))
  56                                                 {
  57                                                         if ((oldadding != adding) || (!output.length()))
  58                                                                 output += (adding ? '+' : '-');
  59
  60                                                         this->SetNoticeMask(u, adding);
  61
  62                                                         output += u;
  63                                                 }
  64                                                 oldadding = adding;
  65                                         }
  66                                 }
  67                         break;
  68                         default:
  69                                 if (isalpha(*c))
  70                                 {
  71                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  72                                         {
  73                                                 if ((oldadding != adding) || (!output.length()))
  74                                                         output += (adding ? '+' : '-');
  75
  76                                                 this->SetNoticeMask(*c, adding);
  77
  78                                                 output += *c;
  79                                         }
  80                                 }
  81                                 else
  82                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  83
  84                                 oldadding = adding;
  85                         break;
  86                 }
  87
  88                 c++;
  89         }
  90
  91         std::string s = this->FormatNoticeMasks();
  92         if (s.length() == 0)
  93         {
  94                 this->modes[UM_SNOMASK] = false;
  95         }
  96
  97         return output;
  98 }
  99
 100 void LocalUser::StartDNSLookup()
 101 {
 102         try
 103         {
 104                 bool cached = false;
 105                 const char* sip = this->GetIPString();
 106                 UserResolver *res_reverse;
 107
 108                 QueryType resolvtype = this->client_sa.sa.sa_family == AF_INET6 ? DNS_QUERY_PTR6 : DNS_QUERY_PTR4;
 109                 res_reverse = new UserResolver(this, sip, resolvtype, cached);
 110
 111                 ServerInstance->AddResolver(res_reverse, cached);
 112         }
 113         catch (CoreException& e)
 114         {
 115                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 116         }
 117 }
 118
 119 bool User::IsNoticeMaskSet(unsigned char sm)
 120 {
 121         if (!isalpha(sm))
 122                 return false;
 123         return (snomasks[sm-65]);
 124 }
 125
 126 void User::SetNoticeMask(unsigned char sm, bool value)
 127 {
 128         if (!isalpha(sm))
 129                 return;
 130         snomasks[sm-65] = value;
 131 }
 132
 133 const char* User::FormatNoticeMasks()
 134 {
 135         static char data[MAXBUF];
 136         int offset = 0;
 137
 138         for (int n = 0; n < 64; n++)
 139         {
 140                 if (snomasks[n])
 141                         data[offset++] = n+65;
 142         }
 143
 144         data[offset] = 0;
 145         return data;
 146 }
 147
 148 bool User::IsModeSet(unsigned char m)
 149 {
 150         if (!isalpha(m))
 151                 return false;
 152         return (modes[m-65]);
 153 }
 154
 155 void User::SetMode(unsigned char m, bool value)
 156 {
 157         if (!isalpha(m))
 158                 return;
 159         modes[m-65] = value;
 160 }
 161
 162 const char* User::FormatModes(bool showparameters)
 163 {
 164         static char data[MAXBUF];
 165         std::string params;
 166         int offset = 0;
 167
 168         for (unsigned char n = 0; n < 64; n++)
 169         {
 170                 if (modes[n])
 171                 {
 172                         data[offset++] = n + 65;
 173                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 174                         if (showparameters && mh && mh->GetNumParams(true))
 175                         {
 176                                 std::string p = mh->GetUserParameter(this);
 177                                 if (p.length())
 178                                         params.append(" ").append(p);
 179                         }
 180                 }
 181         }
 182         data[offset] = 0;
 183         strlcat(data, params.c_str(), MAXBUF);
 184         return data;
 185 }
 186
 187 User::User(const std::string &uid, const std::string& sid, int type)
 188         : uuid(uid), server(sid), usertype(type)
 189 {
 190         age = ServerInstance->Time();
 191         signon = idle_lastmsg = 0;
 192         registered = 0;
 193         quietquit = quitting = exempt = dns_done = false;
 194         client_sa.sa.sa_family = AF_UNSPEC;
 195
 196         ServerInstance->Logs->Log("USERS", DEBUG, "New UUID for user: %s", uuid.c_str());
 197
 198         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 199         if (finduuid == ServerInstance->Users->uuidlist->end())
 200                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 201         else
 202                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 203 }
 204
 205 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 206         : User(ServerInstance->GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 207         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 208         already_sent(0)
 209 {
 210         lastping = 0;
 211         eh.SetFd(myfd);
 212         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 213         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 214 }
 215
 216 User::~User()
 217 {
 218         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 219                 ServerInstance->Logs->Log("USERS", DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 220 }
 221
 222 const std::string& User::MakeHost()
 223 {
 224         if (!this->cached_makehost.empty())
 225                 return this->cached_makehost;
 226
 227         char nhost[MAXBUF];
 228         /* This is much faster than snprintf */
 229         char* t = nhost;
 230         for(const char* n = ident.c_str(); *n; n++)
 231                 *t++ = *n;
 232         *t++ = '@';
 233         for(const char* n = host.c_str(); *n; n++)
 234                 *t++ = *n;
 235         *t = 0;
 236
 237         this->cached_makehost.assign(nhost);
 238
 239         return this->cached_makehost;
 240 }
 241
 242 const std::string& User::MakeHostIP()
 243 {
 244         if (!this->cached_hostip.empty())
 245                 return this->cached_hostip;
 246
 247         char ihost[MAXBUF];
 248         /* This is much faster than snprintf */
 249         char* t = ihost;
 250         for(const char* n = ident.c_str(); *n; n++)
 251                 *t++ = *n;
 252         *t++ = '@';
 253         for(const char* n = this->GetIPString(); *n; n++)
 254                 *t++ = *n;
 255         *t = 0;
 256
 257         this->cached_hostip = ihost;
 258
 259         return this->cached_hostip;
 260 }
 261
 262 const std::string& User::GetFullHost()
 263 {
 264         if (!this->cached_fullhost.empty())
 265                 return this->cached_fullhost;
 266
 267         char result[MAXBUF];
 268         char* t = result;
 269         for(const char* n = nick.c_str(); *n; n++)
 270                 *t++ = *n;
 271         *t++ = '!';
 272         for(const char* n = ident.c_str(); *n; n++)
 273                 *t++ = *n;
 274         *t++ = '@';
 275         for(const char* n = dhost.c_str(); *n; n++)
 276                 *t++ = *n;
 277         *t = 0;
 278
 279         this->cached_fullhost = result;
 280
 281         return this->cached_fullhost;
 282 }
 283
 284 char* User::MakeWildHost()
 285 {
 286         static char nresult[MAXBUF];
 287         char* t = nresult;
 288         *t++ = '*';     *t++ = '!';
 289         *t++ = '*';     *t++ = '@';
 290         for(const char* n = dhost.c_str(); *n; n++)
 291                 *t++ = *n;
 292         *t = 0;
 293         return nresult;
 294 }
 295
 296 const std::string& User::GetFullRealHost()
 297 {
 298         if (!this->cached_fullrealhost.empty())
 299                 return this->cached_fullrealhost;
 300
 301         char fresult[MAXBUF];
 302         char* t = fresult;
 303         for(const char* n = nick.c_str(); *n; n++)
 304                 *t++ = *n;
 305         *t++ = '!';
 306         for(const char* n = ident.c_str(); *n; n++)
 307                 *t++ = *n;
 308         *t++ = '@';
 309         for(const char* n = host.c_str(); *n; n++)
 310                 *t++ = *n;
 311         *t = 0;
 312
 313         this->cached_fullrealhost = fresult;
 314
 315         return this->cached_fullrealhost;
 316 }
 317
 318 bool LocalUser::IsInvited(const irc::string &channel)
 319 {
 320         time_t now = ServerInstance->Time();
 321         InvitedList::iterator safei;
 322         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 323         {
 324                 if (channel == i->first)
 325                 {
 326                         if (i->second != 0 && now > i->second)
 327                         {
 328                                 /* Expired invite, remove it. */
 329                                 safei = i;
 330                                 --i;
 331                                 invites.erase(safei);
 332                                 continue;
 333                         }
 334                         return true;
 335                 }
 336         }
 337         return false;
 338 }
 339
 340 InvitedList* LocalUser::GetInviteList()
 341 {
 342         time_t now = ServerInstance->Time();
 343         /* Weed out expired invites here. */
 344         InvitedList::iterator safei;
 345         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 346         {
 347                 if (i->second != 0 && now > i->second)
 348                 {
 349                         /* Expired invite, remove it. */
 350                         safei = i;
 351                         --i;
 352                         invites.erase(safei);
 353                 }
 354         }
 355         return &invites;
 356 }
 357
 358 void LocalUser::InviteTo(const irc::string &channel, time_t invtimeout)
 359 {
 360         time_t now = ServerInstance->Time();
 361         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 362         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 363         {
 364                 if (channel == i->first)
 365                 {
 366                         if (i->second != 0 && invtimeout > i->second)
 367                         {
 368                                 i->second = invtimeout;
 369                         }
 370
 371                         return;
 372                 }
 373         }
 374         invites.push_back(std::make_pair(channel, invtimeout));
 375 }
 376
 377 void LocalUser::RemoveInvite(const irc::string &channel)
 378 {
 379         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 380         {
 381                 if (channel == i->first)
 382                 {
 383                         invites.erase(i);
 384                         return;
 385                 }
 386         }
 387 }
 388
 389 bool User::HasModePermission(unsigned char, ModeType)
 390 {
 391         return true;
 392 }
 393
 394 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 395 {
 396         if (!IS_OPER(this))
 397                 return false;
 398
 399         if (mode < 'A' || mode > ('A' + 64)) return false;
 400
 401         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 402
 403 }
 404 /*
 405  * users on remote servers can completely bypass all permissions based checks.
 406  * This prevents desyncs when one server has different type/class tags to another.
 407  * That having been said, this does open things up to the possibility of source changes
 408  * allowing remote kills, etc - but if they have access to the src, they most likely have
 409  * access to the conf - so it's an end to a means either way.
 410  */
 411 bool User::HasPermission(const std::string&)
 412 {
 413         return true;
 414 }
 415
 416 bool LocalUser::HasPermission(const std::string &command)
 417 {
 418         // are they even an oper at all?
 419         if (!IS_OPER(this))
 420         {
 421                 return false;
 422         }
 423
 424         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 425                 return true;
 426         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 427                 return true;
 428
 429         return false;
 430 }
 431
 432 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 433 {
 434         return true;
 435 }
 436
 437 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 438 {
 439         if (!IS_OPER(this))
 440         {
 441                 if (noisy)
 442                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 443                 return false;
 444         }
 445
 446         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 447         {
 448                 return true;
 449         }
 450         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 451         {
 452                 return true;
 453         }
 454
 455         if (noisy)
 456                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), oper->NameStr(), privstr.c_str());
 457         return false;
 458 }
 459
 460 void UserIOHandler::OnDataReady()
 461 {
 462         if (user->quitting)
 463                 return;
 464
 465         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 466         {
 467                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 468                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 469                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 470         }
 471         unsigned long sendqmax = ULONG_MAX;
 472         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 473                 sendqmax = user->MyClass->GetSendqSoftMax();
 474         unsigned long penaltymax = ULONG_MAX;
 475         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 476                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 477
 478         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 479         {
 480                 std::string line;
 481                 line.reserve(MAXBUF);
 482                 std::string::size_type qpos = 0;
 483                 while (qpos < recvq.length())
 484                 {
 485                         char c = recvq[qpos++];
 486                         switch (c)
 487                         {
 488                         case '\0':
 489                                 c = ' ';
 490                                 break;
 491                         case '\r':
 492                                 continue;
 493                         case '\n':
 494                                 goto eol_found;
 495                         }
 496                         if (line.length() < MAXBUF - 2)
 497                                 line.push_back(c);
 498                 }
 499                 // if we got here, the recvq ran out before we found a newline
 500                 return;
 501 eol_found:
 502                 // just found a newline. Terminate the string, and pull it out of recvq
 503                 recvq = recvq.substr(qpos);
 504
 505                 // TODO should this be moved to when it was inserted in recvq?
 506                 ServerInstance->stats->statsRecv += qpos;
 507                 user->bytes_in += qpos;
 508                 user->cmds_in++;
 509
 510                 ServerInstance->Parser->ProcessBuffer(line, user);
 511                 if (user->quitting)
 512                         return;
 513         }
 514         // Add pseudo-penalty so that we continue processing after sendq recedes
 515         if (user->CommandFloodPenalty == 0 && getSendQSize() >= sendqmax)
 516                 user->CommandFloodPenalty++;
 517         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 518                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 519 }
 520
 521 void UserIOHandler::AddWriteBuf(const std::string &data)
 522 {
 523         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 524                 !user->HasPrivPermission("users/flood/increased-buffers"))
 525         {
 526                 /*
 527                  * Quit the user FIRST, because otherwise we could recurse
 528                  * here and hit the same limit.
 529                  */
 530                 ServerInstance->Users->QuitUser(user, "SendQ exceeded");
 531                 ServerInstance->SNO->WriteToSnoMask('a', "User %s SendQ exceeds connect class maximum of %lu",
 532                         user->nick.c_str(), user->MyClass->GetSendqHardMax());
 533                 return;
 534         }
 535
 536         // We still want to append data to the sendq of a quitting user,
 537         // e.g. their ERROR message that says 'closing link'
 538
 539         WriteData(data);
 540 }
 541
 542 void UserIOHandler::OnError(BufferedSocketError)
 543 {
 544         ServerInstance->Users->QuitUser(user, getError());
 545 }
 546
 547 CullResult User::cull()
 548 {
 549         if (!quitting)
 550                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 551         PurgeEmptyChannels();
 552
 553         this->InvalidateCache();
 554
 555         if (client_sa.sa.sa_family != AF_UNSPEC)
 556                 ServerInstance->Users->RemoveCloneCounts(this);
 557
 558         return Extensible::cull();
 559 }
 560
 561 CullResult LocalUser::cull()
 562 {
 563         std::vector<LocalUser*>::iterator x = find(ServerInstance->Users->local_users.begin(),ServerInstance->Users->local_users.end(),this);
 564         if (x != ServerInstance->Users->local_users.end())
 565                 ServerInstance->Users->local_users.erase(x);
 566         else
 567                 ServerInstance->Logs->Log("USERS", DEBUG, "Failed to remove user from vector");
 568
 569         eh.cull();
 570         return User::cull();
 571 }
 572
 573 CullResult FakeUser::cull()
 574 {
 575         // Fake users don't quit, they just get culled.
 576         quitting = true;
 577         ServerInstance->Users->clientlist->erase(nick);
 578         ServerInstance->Users->uuidlist->erase(uuid);
 579         return User::cull();
 580 }
 581
 582 void User::Oper(OperInfo* info)
 583 {
 584         if (this->IsModeSet('o'))
 585                 this->UnOper();
 586
 587         this->modes[UM_OPERATOR] = 1;
 588         this->oper = info;
 589         this->WriteServ("MODE %s :+o", this->nick.c_str());
 590         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 591
 592         std::string opername;
 593         if (info->oper_block)
 594                 opername = info->oper_block->getString("name");
 595
 596         if (IS_LOCAL(this))
 597         {
 598                 LocalUser* l = IS_LOCAL(this);
 599                 std::string vhost = oper->getConfig("vhost");
 600                 if (!vhost.empty())
 601                         l->ChangeDisplayedHost(vhost.c_str());
 602                 std::string opClass = oper->getConfig("class");
 603                 if (!opClass.empty())
 604                         l->SetClass(opClass);
 605         }
 606
 607         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 608                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 609         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 610
 611         ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick.c_str(), this->ident.c_str(), this->host.c_str(), oper->NameStr());
 612         ServerInstance->Users->all_opers.push_back(this);
 613
 614         // Expand permissions from config for faster lookup
 615         if (IS_LOCAL(this))
 616                 oper->init();
 617
 618         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 619 }
 620
 621 void OperInfo::init()
 622 {
 623         AllowedOperCommands.clear();
 624         AllowedPrivs.clear();
 625         AllowedUserModes.reset();
 626         AllowedChanModes.reset();
 627         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 628
 629         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 630         {
 631                 ConfigTag* tag = *iter;
 632                 std::string mycmd, mypriv;
 633                 /* Process commands */
 634                 irc::spacesepstream CommandList(tag->getString("commands"));
 635                 while (CommandList.GetToken(mycmd))
 636                 {
 637                         AllowedOperCommands.insert(mycmd);
 638                 }
 639
 640                 irc::spacesepstream PrivList(tag->getString("privs"));
 641                 while (PrivList.GetToken(mypriv))
 642                 {
 643                         AllowedPrivs.insert(mypriv);
 644                 }
 645
 646                 for (unsigned char* c = (unsigned char*)tag->getString("usermodes").c_str(); *c; ++c)
 647                 {
 648                         if (*c == '*')
 649                         {
 650                                 this->AllowedUserModes.set();
 651                         }
 652                         else
 653                         {
 654                                 this->AllowedUserModes[*c - 'A'] = true;
 655                         }
 656                 }
 657
 658                 for (unsigned char* c = (unsigned char*)tag->getString("chanmodes").c_str(); *c; ++c)
 659                 {
 660                         if (*c == '*')
 661                         {
 662                                 this->AllowedChanModes.set();
 663                         }
 664                         else
 665                         {
 666                                 this->AllowedChanModes[*c - 'A'] = true;
 667                         }
 668                 }
 669         }
 670 }
 671
 672 void User::UnOper()
 673 {
 674         if (!IS_OPER(this))
 675                 return;
 676
 677         /*
 678          * unset their oper type (what IS_OPER checks).
 679          * note, order is important - this must come before modes as -o attempts
 680          * to call UnOper. -- w00t
 681          */
 682         oper = NULL;
 683
 684
 685         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 686         std::string moderemove("-");
 687
 688         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 689         {
 690                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 691                 if (mh && mh->NeedsOper())
 692                         moderemove += letter;
 693         }
 694
 695
 696         std::vector<std::string> parameters;
 697         parameters.push_back(this->nick);
 698         parameters.push_back(moderemove);
 699
 700         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 701
 702         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 703         ServerInstance->Users->all_opers.remove(this);
 704
 705         this->modes[UM_OPERATOR] = 0;
 706 }
 707
 708 /* adds or updates an entry in the whowas list */
 709 void User::AddToWhoWas()
 710 {
 711         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 712         if (whowas)
 713         {
 714                 WhowasRequest req(NULL, whowas, WhowasRequest::WHOWAS_ADD);
 715                 req.user = this;
 716                 req.Send();
 717         }
 718 }
 719
 720 /*
 721  * Check class restrictions
 722  */
 723 void LocalUser::CheckClass()
 724 {
 725         ConnectClass* a = this->MyClass;
 726
 727         if (!a)
 728         {
 729                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 730                 return;
 731         }
 732         else if (a->type == CC_DENY)
 733         {
 734                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 735                 return;
 736         }
 737         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 738         {
 739                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 740                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 741                 return;
 742         }
 743         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 744         {
 745                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 746                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 747                 return;
 748         }
 749
 750         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 751 }
 752
 753 bool User::CheckLines(bool doZline)
 754 {
 755         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 756
 757         if (!this->exempt)
 758         {
 759                 for (int n = 0; check[n]; ++n)
 760                 {
 761                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 762
 763                         if (r)
 764                         {
 765                                 r->Apply(this);
 766                                 return true;
 767                         }
 768                 }
 769         }
 770
 771         return false;
 772 }
 773
 774 void LocalUser::FullConnect()
 775 {
 776         ServerInstance->stats->statsConnects++;
 777         this->idle_lastmsg = ServerInstance->Time();
 778
 779         /*
 780          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 781          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 782          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 783          * Don't remove this! -- w00t
 784          */
 785         SetClass();
 786         CheckClass();
 787         CheckLines();
 788
 789         if (quitting)
 790                 return;
 791
 792         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network.c_str());
 793         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str());
 794         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version InspIRCd-2.0",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
 795         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 796         this->WriteNumeric(RPL_SERVERVERSION, "%s %s InspIRCd-2.0 %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 797
 798         ServerInstance->Config->Send005(this);
 799         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 800
 801         /* Now registered */
 802         if (ServerInstance->Users->unregistered_count)
 803                 ServerInstance->Users->unregistered_count--;
 804
 805         /* Trigger MOTD and LUSERS output, give modules a chance too */
 806         ModResult MOD_RESULT;
 807         std::string command("MOTD");
 808         std::vector<std::string> parameters;
 809         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 810         if (!MOD_RESULT)
 811                 ServerInstance->CallCommandHandler(command, parameters, this);
 812
 813         MOD_RESULT = MOD_RES_PASSTHRU;
 814         command = "LUSERS";
 815         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 816         if (!MOD_RESULT)
 817                 ServerInstance->CallCommandHandler(command, parameters, this);
 818
 819         if (ServerInstance->Config->RawLog)
 820                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 821
 822         /*
 823          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 824          * for a user that doesn't exist yet.
 825          */
 826         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 827
 828         this->registered = REG_ALL;
 829
 830         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 831
 832         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]",
 833                 this->GetServerPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
 834         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 835         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 836 }
 837
 838 void User::InvalidateCache()
 839 {
 840         /* Invalidate cache */
 841         cached_fullhost.clear();
 842         cached_hostip.clear();
 843         cached_makehost.clear();
 844         cached_fullrealhost.clear();
 845 }
 846
 847 bool User::ChangeNick(const std::string& newnick, bool force)
 848 {
 849         ModResult MOD_RESULT;
 850
 851         if (force)
 852                 ServerInstance->NICKForced.set(this, 1);
 853         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 854         ServerInstance->NICKForced.set(this, 0);
 855
 856         if (MOD_RESULT == MOD_RES_DENY)
 857         {
 858                 ServerInstance->stats->statsCollisions++;
 859                 return false;
 860         }
 861
 862         if (assign(newnick) == assign(nick))
 863         {
 864                 // case change, don't need to check Q:lines and such
 865                 // and, if it's identical including case, we can leave right now
 866                 if (newnick == nick)
 867                         return true;
 868         }
 869         else
 870         {
 871                 /*
 872                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 873                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 874                  * Thanks Kein for finding this. -- w00t
 875                  *
 876                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 877                  *              -- w00t
 878                  */
 879                 if (IS_LOCAL(this) && !force)
 880                 {
 881                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 882                         if (mq)
 883                         {
 884                                 if (this->registered == REG_ALL)
 885                                 {
 886                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s!%s@%s: %s",
 887                                                 newnick.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), mq->reason.c_str());
 888                                 }
 889                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 890                                 return false;
 891                         }
 892
 893                         if (ServerInstance->Config->RestrictBannedUsers)
 894                         {
 895                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 896                                 {
 897                                         Channel *chan = *i;
 898                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 899                                         {
 900                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 901                                                 return false;
 902                                         }
 903                                 }
 904                         }
 905                 }
 906
 907                 /*
 908                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 909                  * then we have a potential collide. Check whether someone else is camping on the nick
 910                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 911                  * camper to their UID, and allow the incoming nick change.
 912                  *
 913                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 914                  * because the nick is already (rightfully) in use. -- w00t
 915                  */
 916                 User* InUse = ServerInstance->FindNickOnly(newnick);
 917                 if (InUse && (InUse != this))
 918                 {
 919                         if (InUse->registered != REG_ALL)
 920                         {
 921                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 922                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 923                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 924
 925                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 926                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 927
 928                                 InUse->nick = InUse->uuid;
 929                                 InUse->InvalidateCache();
 930                                 InUse->registered &= ~REG_NICK;
 931                         }
 932                         else
 933                         {
 934                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 935                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 936                                 return false;
 937                         }
 938                 }
 939         }
 940
 941         if (this->registered == REG_ALL)
 942                 this->WriteCommon("NICK %s",newnick.c_str());
 943         std::string oldnick = nick;
 944         nick = newnick;
 945
 946         InvalidateCache();
 947         ServerInstance->Users->clientlist->erase(oldnick);
 948         (*(ServerInstance->Users->clientlist))[newnick] = this;
 949
 950         if (registered == REG_ALL)
 951                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 952
 953         return true;
 954 }
 955
 956 int LocalUser::GetServerPort()
 957 {
 958         switch (this->server_sa.sa.sa_family)
 959         {
 960                 case AF_INET6:
 961                         return htons(this->server_sa.in6.sin6_port);
 962                 case AF_INET:
 963                         return htons(this->server_sa.in4.sin_port);
 964         }
 965         return 0;
 966 }
 967
 968 const char* User::GetIPString()
 969 {
 970         int port;
 971         if (cachedip.empty())
 972         {
 973                 irc::sockets::satoap(client_sa, cachedip, port);
 974                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 975                 if (cachedip.c_str()[0] == ':')
 976                         cachedip.insert(0,1,'0');
 977         }
 978
 979         return cachedip.c_str();
 980 }
 981
 982 irc::sockets::cidr_mask User::GetCIDRMask()
 983 {
 984         int range = 0;
 985         switch (client_sa.sa.sa_family)
 986         {
 987                 case AF_INET6:
 988                         range = ServerInstance->Config->c_ipv6_range;
 989                         break;
 990                 case AF_INET:
 991                         range = ServerInstance->Config->c_ipv4_range;
 992                         break;
 993         }
 994         return irc::sockets::cidr_mask(client_sa, range);
 995 }
 996
 997 bool User::SetClientIP(const char* sip)
 998 {
 999         this->cachedip = "";
1000         return irc::sockets::aptosa(sip, 0, client_sa);
1001 }
1002
1003 static std::string wide_newline("\r\n");
1004
1005 void User::Write(const std::string& text)
1006 {
1007 }
1008
1009 void User::Write(const char *text, ...)
1010 {
1011 }
1012
1013 void LocalUser::Write(const std::string& text)
1014 {
1015         if (!ServerInstance->SE->BoundsCheckFd(&eh))
1016                 return;
1017
1018         if (text.length() > MAXBUF - 2)
1019         {
1020                 // this should happen rarely or never. Crop the string at 512 and try again.
1021                 std::string try_again = text.substr(0, MAXBUF - 2);
1022                 Write(try_again);
1023                 return;
1024         }
1025
1026         ServerInstance->Logs->Log("USEROUTPUT", RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
1027
1028         eh.AddWriteBuf(text);
1029         eh.AddWriteBuf(wide_newline);
1030
1031         ServerInstance->stats->statsSent += text.length() + 2;
1032         this->bytes_out += text.length() + 2;
1033         this->cmds_out++;
1034 }
1035
1036 /** Write()
1037  */
1038 void LocalUser::Write(const char *text, ...)
1039 {
1040         va_list argsPtr;
1041         char textbuffer[MAXBUF];
1042
1043         va_start(argsPtr, text);
1044         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1045         va_end(argsPtr);
1046
1047         this->Write(std::string(textbuffer));
1048 }
1049
1050 void User::WriteServ(const std::string& text)
1051 {
1052         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1053 }
1054
1055 /** WriteServ()
1056  *  Same as Write(), except `text' is prefixed with `:server.name '.
1057  */
1058 void User::WriteServ(const char* text, ...)
1059 {
1060         va_list argsPtr;
1061         char textbuffer[MAXBUF];
1062
1063         va_start(argsPtr, text);
1064         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1065         va_end(argsPtr);
1066
1067         this->WriteServ(std::string(textbuffer));
1068 }
1069
1070
1071 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1072 {
1073         va_list argsPtr;
1074         char textbuffer[MAXBUF];
1075
1076         va_start(argsPtr, text);
1077         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1078         va_end(argsPtr);
1079
1080         this->WriteNumeric(numeric, std::string(textbuffer));
1081 }
1082
1083 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1084 {
1085         char textbuffer[MAXBUF];
1086         ModResult MOD_RESULT;
1087
1088         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1089
1090         if (MOD_RESULT == MOD_RES_DENY)
1091                 return;
1092
1093         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1094         this->Write(std::string(textbuffer));
1095 }
1096
1097 void User::WriteFrom(User *user, const std::string &text)
1098 {
1099         char tb[MAXBUF];
1100
1101         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1102
1103         this->Write(std::string(tb));
1104 }
1105
1106
1107 /* write text from an originating user to originating user */
1108
1109 void User::WriteFrom(User *user, const char* text, ...)
1110 {
1111         va_list argsPtr;
1112         char textbuffer[MAXBUF];
1113
1114         va_start(argsPtr, text);
1115         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1116         va_end(argsPtr);
1117
1118         this->WriteFrom(user, std::string(textbuffer));
1119 }
1120
1121
1122 /* write text to an destination user from a source user (e.g. user privmsg) */
1123
1124 void User::WriteTo(User *dest, const char *data, ...)
1125 {
1126         char textbuffer[MAXBUF];
1127         va_list argsPtr;
1128
1129         va_start(argsPtr, data);
1130         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1131         va_end(argsPtr);
1132
1133         this->WriteTo(dest, std::string(textbuffer));
1134 }
1135
1136 void User::WriteTo(User *dest, const std::string &data)
1137 {
1138         dest->WriteFrom(this, data);
1139 }
1140
1141 void User::WriteCommon(const char* text, ...)
1142 {
1143         char textbuffer[MAXBUF];
1144         va_list argsPtr;
1145
1146         if (this->registered != REG_ALL || quitting)
1147                 return;
1148
1149         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1150
1151         va_start(argsPtr, text);
1152         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1153         va_end(argsPtr);
1154
1155         this->WriteCommonRaw(std::string(textbuffer), true);
1156 }
1157
1158 void User::WriteCommonExcept(const char* text, ...)
1159 {
1160         char textbuffer[MAXBUF];
1161         va_list argsPtr;
1162
1163         if (this->registered != REG_ALL || quitting)
1164                 return;
1165
1166         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1167
1168         va_start(argsPtr, text);
1169         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1170         va_end(argsPtr);
1171
1172         this->WriteCommonRaw(std::string(textbuffer), false);
1173 }
1174
1175 void User::WriteCommonRaw(const std::string &line, bool include_self)
1176 {
1177         if (this->registered != REG_ALL || quitting)
1178                 return;
1179
1180         LocalUser::already_sent_id++;
1181
1182         UserChanList include_c(chans);
1183         std::map<User*,bool> exceptions;
1184
1185         exceptions[this] = include_self;
1186
1187         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1188
1189         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1190         {
1191                 LocalUser* u = IS_LOCAL(i->first);
1192                 if (u && !u->quitting)
1193                 {
1194                         u->already_sent = LocalUser::already_sent_id;
1195                         if (i->second)
1196                                 u->Write(line);
1197                 }
1198         }
1199         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1200         {
1201                 Channel* c = *v;
1202                 const UserMembList* ulist = c->GetUsers();
1203                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1204                 {
1205                         LocalUser* u = IS_LOCAL(i->first);
1206                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1207                         {
1208                                 u->already_sent = LocalUser::already_sent_id;
1209                                 u->Write(line);
1210                         }
1211                 }
1212         }
1213 }
1214
1215 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1216 {
1217         char tb1[MAXBUF];
1218         char tb2[MAXBUF];
1219
1220         if (this->registered != REG_ALL)
1221                 return;
1222
1223         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1224
1225         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1226         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1227         std::string out1 = tb1;
1228         std::string out2 = tb2;
1229
1230         UserChanList include_c(chans);
1231         std::map<User*,bool> exceptions;
1232
1233         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1234
1235         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1236         {
1237                 LocalUser* u = IS_LOCAL(i->first);
1238                 if (u && !u->quitting)
1239                 {
1240                         u->already_sent = uniq_id;
1241                         if (i->second)
1242                                 u->Write(IS_OPER(u) ? out2 : out1);
1243                 }
1244         }
1245         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1246         {
1247                 const UserMembList* ulist = (*v)->GetUsers();
1248                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1249                 {
1250                         LocalUser* u = IS_LOCAL(i->first);
1251                         if (u && !u->quitting && (u->already_sent != uniq_id))
1252                         {
1253                                 u->already_sent = uniq_id;
1254                                 u->Write(IS_OPER(u) ? out2 : out1);
1255                         }
1256                 }
1257         }
1258 }
1259
1260 void LocalUser::SendText(const std::string& line)
1261 {
1262         Write(line);
1263 }
1264
1265 void RemoteUser::SendText(const std::string& line)
1266 {
1267         ServerInstance->PI->PushToClient(this, line);
1268 }
1269
1270 void FakeUser::SendText(const std::string& line)
1271 {
1272 }
1273
1274 void User::SendText(const char *text, ...)
1275 {
1276         va_list argsPtr;
1277         char line[MAXBUF];
1278
1279         va_start(argsPtr, text);
1280         vsnprintf(line, MAXBUF, text, argsPtr);
1281         va_end(argsPtr);
1282
1283         SendText(std::string(line));
1284 }
1285
1286 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1287 {
1288         char line[MAXBUF];
1289         int start_pos = LinePrefix.length();
1290         int pos = start_pos;
1291         memcpy(line, LinePrefix.data(), pos);
1292         std::string Word;
1293         while (TextStream >> Word)
1294         {
1295                 int len = Word.length();
1296                 if (pos + len + 12 > MAXBUF)
1297                 {
1298                         line[pos] = '\0';
1299                         SendText(std::string(line));
1300                         pos = start_pos;
1301                 }
1302                 line[pos] = ' ';
1303                 memcpy(line + pos + 1, Word.data(), len);
1304                 pos += len + 1;
1305         }
1306         line[pos] = '\0';
1307         SendText(std::string(line));
1308 }
1309
1310 /* return 0 or 1 depending if users u and u2 share one or more common channels
1311  * (used by QUIT, NICK etc which arent channel specific notices)
1312  *
1313  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1314  * the first users channels then the second users channels within the outer loop,
1315  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1316  * all possible iterations). However this new function instead checks against the
1317  * channel's userlist in the inner loop which is a std::map<User*,User*>
1318  * and saves us time as we already know what pointer value we are after.
1319  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1320  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1321  */
1322 bool User::SharesChannelWith(User *other)
1323 {
1324         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1325                 return false;
1326
1327         /* Outer loop */
1328         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1329         {
1330                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1331                  * by replacing it with a map::find which *should* be more efficient
1332                  */
1333                 if ((*i)->HasUser(other))
1334                         return true;
1335         }
1336         return false;
1337 }
1338
1339 bool User::ChangeName(const char* gecos)
1340 {
1341         if (!this->fullname.compare(gecos))
1342                 return true;
1343
1344         if (IS_LOCAL(this))
1345         {
1346                 ModResult MOD_RESULT;
1347                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1348                 if (MOD_RESULT == MOD_RES_DENY)
1349                         return false;
1350                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1351         }
1352         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1353
1354         return true;
1355 }
1356
1357 void User::DoHostCycle(const std::string &quitline)
1358 {
1359         char buffer[MAXBUF];
1360
1361         if (!ServerInstance->Config->CycleHosts)
1362                 return;
1363
1364         already_sent_t silent_id = ++LocalUser::already_sent_id;
1365         already_sent_t seen_id = ++LocalUser::already_sent_id;
1366
1367         UserChanList include_c(chans);
1368         std::map<User*,bool> exceptions;
1369
1370         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1371
1372         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1373         {
1374                 LocalUser* u = IS_LOCAL(i->first);
1375                 if (u && !u->quitting)
1376                 {
1377                         if (i->second)
1378                         {
1379                                 u->already_sent = seen_id;
1380                                 u->Write(quitline);
1381                         }
1382                         else
1383                         {
1384                                 u->already_sent = silent_id;
1385                         }
1386                 }
1387         }
1388         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1389         {
1390                 Channel* c = *v;
1391                 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1392                 std::string joinline(buffer);
1393                 Membership* memb = c->GetUser(this);
1394                 std::string modeline = memb->modes;
1395                 if (modeline.length() > 0)
1396                 {
1397                         for(unsigned int i=0; i < memb->modes.length(); i++)
1398                                 modeline.append(" ").append(nick);
1399                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s",
1400                                 ServerInstance->Config->CycleHostsFromUser ? GetFullHost().c_str() : ServerInstance->Config->ServerName.c_str(),
1401                                 c->name.c_str(), modeline.c_str());
1402                         modeline = buffer;
1403                 }
1404
1405                 const UserMembList *ulist = c->GetUsers();
1406                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1407                 {
1408                         LocalUser* u = IS_LOCAL(i->first);
1409                         if (u == NULL || u == this)
1410                                 continue;
1411                         if (u->already_sent == silent_id)
1412                                 continue;
1413
1414                         if (u->already_sent != seen_id)
1415                         {
1416                                 u->Write(quitline);
1417                                 u->already_sent = seen_id;
1418                         }
1419                         u->Write(joinline);
1420                         if (modeline.length() > 0)
1421                                 u->Write(modeline);
1422                 }
1423         }
1424 }
1425
1426 bool User::ChangeDisplayedHost(const char* shost)
1427 {
1428         if (dhost == shost)
1429                 return true;
1430
1431         if (IS_LOCAL(this))
1432         {
1433                 ModResult MOD_RESULT;
1434                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1435                 if (MOD_RESULT == MOD_RES_DENY)
1436                         return false;
1437         }
1438
1439         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1440
1441         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1442
1443         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1444         this->dhost.assign(shost, 0, 64);
1445
1446         this->InvalidateCache();
1447
1448         this->DoHostCycle(quitstr);
1449
1450         if (IS_LOCAL(this))
1451                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1452
1453         return true;
1454 }
1455
1456 bool User::ChangeIdent(const char* newident)
1457 {
1458         if (this->ident == newident)
1459                 return true;
1460
1461         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1462
1463         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1464
1465         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1466
1467         this->InvalidateCache();
1468
1469         this->DoHostCycle(quitstr);
1470
1471         return true;
1472 }
1473
1474 void User::SendAll(const char* command, const char* text, ...)
1475 {
1476         char textbuffer[MAXBUF];
1477         char formatbuffer[MAXBUF];
1478         va_list argsPtr;
1479
1480         va_start(argsPtr, text);
1481         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1482         va_end(argsPtr);
1483
1484         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1485         std::string fmt = formatbuffer;
1486
1487         for (std::vector<LocalUser*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1488         {
1489                 (*i)->Write(fmt);
1490         }
1491 }
1492
1493
1494 std::string User::ChannelList(User* source, bool spy)
1495 {
1496         std::string list;
1497
1498         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1499         {
1500                 Channel* c = *i;
1501                 /* If the target is the sender, neither +p nor +s is set, or
1502                  * the channel contains the user, it is not a spy channel
1503                  */
1504                 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1505                         list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1506         }
1507
1508         return list;
1509 }
1510
1511 void User::SplitChanList(User* dest, const std::string &cl)
1512 {
1513         std::string line;
1514         std::ostringstream prefix;
1515         std::string::size_type start, pos, length;
1516
1517         prefix << this->nick << " " << dest->nick << " :";
1518         line = prefix.str();
1519         int namelen = ServerInstance->Config->ServerName.length() + 6;
1520
1521         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1522         {
1523                 length = (pos == std::string::npos) ? cl.length() : pos;
1524
1525                 if (line.length() + namelen + length - start > 510)
1526                 {
1527                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1528                         line = prefix.str();
1529                 }
1530
1531                 if(pos == std::string::npos)
1532                 {
1533                         line.append(cl.substr(start, length - start));
1534                         break;
1535                 }
1536                 else
1537                 {
1538                         line.append(cl.substr(start, length - start + 1));
1539                 }
1540         }
1541
1542         if (line.length())
1543         {
1544                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1545         }
1546 }
1547
1548 /*
1549  * Sets a user's connection class.
1550  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1551  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1552  * then their ip will be taken as 'priority' anyway, so for example,
1553  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1554  */
1555 void LocalUser::SetClass(const std::string &explicit_name)
1556 {
1557         ConnectClass *found = NULL;
1558
1559         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1560
1561         if (!explicit_name.empty())
1562         {
1563                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1564                 {
1565                         ConnectClass* c = *i;
1566
1567                         if (explicit_name == c->name)
1568                         {
1569                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1570                                 found = c;
1571                         }
1572                 }
1573         }
1574         else
1575         {
1576                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1577                 {
1578                         ConnectClass* c = *i;
1579                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Checking %s", c->GetName().c_str());
1580
1581                         ModResult MOD_RESULT;
1582                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1583                         if (MOD_RESULT == MOD_RES_DENY)
1584                                 continue;
1585                         if (MOD_RESULT == MOD_RES_ALLOW)
1586                         {
1587                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class forced by module to %s", c->GetName().c_str());
1588                                 found = c;
1589                                 break;
1590                         }
1591
1592                         if (c->type == CC_NAMED)
1593                                 continue;
1594
1595                         bool regdone = (registered != REG_NONE);
1596                         if (c->config->getBool("registered", regdone) != regdone)
1597                                 continue;
1598
1599                         /* check if host matches.. */
1600                         if (c->GetHost().length() && !InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1601                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1602                         {
1603                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1604                                 continue;
1605                         }
1606
1607                         /*
1608                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1609                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1610                          */
1611                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1612                         {
1613                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1614                                 continue;
1615                         }
1616
1617                         /* if it requires a port ... */
1618                         int port = c->config->getInt("port");
1619                         if (port)
1620                         {
1621                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", port);
1622
1623                                 /* and our port doesn't match, fail. */
1624                                 if (this->GetServerPort() != port)
1625                                         continue;
1626                         }
1627
1628                         if (regdone && !c->config->getString("pass").empty())
1629                         {
1630                                 if (ServerInstance->PassCompare(this, c->config->getString("pass"), password, c->config->getString("hash")))
1631                                 {
1632                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Bad password, skipping");
1633                                         continue;
1634                                 }
1635                         }
1636
1637                         /* we stop at the first class that meets ALL critera. */
1638                         found = c;
1639                         break;
1640                 }
1641         }
1642
1643         /*
1644          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1645          */
1646         if (found)
1647         {
1648                 MyClass = found;
1649         }
1650 }
1651
1652 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1653  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1654  * then their ip will be taken as 'priority' anyway, so for example,
1655  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1656  */
1657 ConnectClass* LocalUser::GetClass()
1658 {
1659         return MyClass;
1660 }
1661
1662 ConnectClass* User::GetClass()
1663 {
1664         return NULL;
1665 }
1666
1667 void User::PurgeEmptyChannels()
1668 {
1669         // firstly decrement the count on each channel
1670         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1671         {
1672                 Channel* c = *f;
1673                 c->DelUser(this);
1674         }
1675
1676         this->UnOper();
1677 }
1678
1679 const std::string& FakeUser::GetFullHost()
1680 {
1681         if (!ServerInstance->Config->HideWhoisServer.empty())
1682                 return ServerInstance->Config->HideWhoisServer;
1683         return server;
1684 }
1685
1686 const std::string& FakeUser::GetFullRealHost()
1687 {
1688         if (!ServerInstance->Config->HideWhoisServer.empty())
1689                 return ServerInstance->Config->HideWhoisServer;
1690         return server;
1691 }
1692
1693 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1694         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1695         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1696         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxchans(0), limit(0)
1697 {
1698 }
1699
1700 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1701         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1702         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1703         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1704         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1705         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxchans(parent.maxchans),
1706         limit(parent.limit)
1707 {
1708 }
1709
1710 void ConnectClass::Update(const ConnectClass* src)
1711 {
1712         name = src->name;
1713         registration_timeout = src->registration_timeout;
1714         host = src->host;
1715         pingtime = src->pingtime;
1716         softsendqmax = src->softsendqmax;
1717         hardsendqmax = src->hardsendqmax;
1718         recvqmax = src->recvqmax;
1719         penaltythreshold = src->penaltythreshold;
1720         maxlocal = src->maxlocal;
1721         maxglobal = src->maxglobal;
1722         limit = src->limit;
1723 }