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         /*
 820          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 821          * for a user that doesn't exist yet.
 822          */
 823         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 824
 825         this->registered = REG_ALL;
 826
 827         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 828
 829         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]",
 830                 this->GetServerPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
 831         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 832         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 833 }
 834
 835 void User::InvalidateCache()
 836 {
 837         /* Invalidate cache */
 838         cached_fullhost.clear();
 839         cached_hostip.clear();
 840         cached_makehost.clear();
 841         cached_fullrealhost.clear();
 842 }
 843
 844 bool User::ChangeNick(const std::string& newnick, bool force)
 845 {
 846         ModResult MOD_RESULT;
 847
 848         if (force)
 849                 ServerInstance->NICKForced.set(this, 1);
 850         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 851         ServerInstance->NICKForced.set(this, 0);
 852
 853         if (MOD_RESULT == MOD_RES_DENY)
 854         {
 855                 ServerInstance->stats->statsCollisions++;
 856                 return false;
 857         }
 858
 859         if (assign(newnick) == assign(nick))
 860         {
 861                 // case change, don't need to check Q:lines and such
 862                 // and, if it's identical including case, we can leave right now
 863                 if (newnick == nick)
 864                         return true;
 865         }
 866         else
 867         {
 868                 /*
 869                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 870                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 871                  * Thanks Kein for finding this. -- w00t
 872                  *
 873                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 874                  *              -- w00t
 875                  */
 876                 if (IS_LOCAL(this) && !force)
 877                 {
 878                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 879                         if (mq)
 880                         {
 881                                 if (this->registered == REG_ALL)
 882                                 {
 883                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s!%s@%s: %s",
 884                                                 newnick.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), mq->reason.c_str());
 885                                 }
 886                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 887                                 return false;
 888                         }
 889
 890                         if (ServerInstance->Config->RestrictBannedUsers)
 891                         {
 892                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 893                                 {
 894                                         Channel *chan = *i;
 895                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 896                                         {
 897                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 898                                                 return false;
 899                                         }
 900                                 }
 901                         }
 902                 }
 903
 904                 /*
 905                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 906                  * then we have a potential collide. Check whether someone else is camping on the nick
 907                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 908                  * camper to their UID, and allow the incoming nick change.
 909                  *
 910                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 911                  * because the nick is already (rightfully) in use. -- w00t
 912                  */
 913                 User* InUse = ServerInstance->FindNickOnly(newnick);
 914                 if (InUse && (InUse != this))
 915                 {
 916                         if (InUse->registered != REG_ALL)
 917                         {
 918                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 919                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 920                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 921
 922                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 923                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 924
 925                                 InUse->nick = InUse->uuid;
 926                                 InUse->InvalidateCache();
 927                                 InUse->registered &= ~REG_NICK;
 928                         }
 929                         else
 930                         {
 931                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 932                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 933                                 return false;
 934                         }
 935                 }
 936         }
 937
 938         if (this->registered == REG_ALL)
 939                 this->WriteCommon("NICK %s",newnick.c_str());
 940         std::string oldnick = nick;
 941         nick = newnick;
 942
 943         InvalidateCache();
 944         ServerInstance->Users->clientlist->erase(oldnick);
 945         (*(ServerInstance->Users->clientlist))[newnick] = this;
 946
 947         if (registered == REG_ALL)
 948                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 949
 950         return true;
 951 }
 952
 953 int LocalUser::GetServerPort()
 954 {
 955         switch (this->server_sa.sa.sa_family)
 956         {
 957                 case AF_INET6:
 958                         return htons(this->server_sa.in6.sin6_port);
 959                 case AF_INET:
 960                         return htons(this->server_sa.in4.sin_port);
 961         }
 962         return 0;
 963 }
 964
 965 const char* User::GetIPString()
 966 {
 967         int port;
 968         if (cachedip.empty())
 969         {
 970                 irc::sockets::satoap(client_sa, cachedip, port);
 971                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 972                 if (cachedip.c_str()[0] == ':')
 973                         cachedip.insert(0,1,'0');
 974         }
 975
 976         return cachedip.c_str();
 977 }
 978
 979 irc::sockets::cidr_mask User::GetCIDRMask()
 980 {
 981         int range = 0;
 982         switch (client_sa.sa.sa_family)
 983         {
 984                 case AF_INET6:
 985                         range = ServerInstance->Config->c_ipv6_range;
 986                         break;
 987                 case AF_INET:
 988                         range = ServerInstance->Config->c_ipv4_range;
 989                         break;
 990         }
 991         return irc::sockets::cidr_mask(client_sa, range);
 992 }
 993
 994 bool User::SetClientIP(const char* sip)
 995 {
 996         this->cachedip = "";
 997         return irc::sockets::aptosa(sip, 0, client_sa);
 998 }
 999
1000 static std::string wide_newline("\r\n");
1001
1002 void User::Write(const std::string& text)
1003 {
1004 }
1005
1006 void User::Write(const char *text, ...)
1007 {
1008 }
1009
1010 void LocalUser::Write(const std::string& text)
1011 {
1012         if (!ServerInstance->SE->BoundsCheckFd(&eh))
1013                 return;
1014
1015         if (text.length() > MAXBUF - 2)
1016         {
1017                 // this should happen rarely or never. Crop the string at 512 and try again.
1018                 std::string try_again = text.substr(0, MAXBUF - 2);
1019                 Write(try_again);
1020                 return;
1021         }
1022
1023         ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%s] O %s", uuid.c_str(), text.c_str());
1024
1025         eh.AddWriteBuf(text);
1026         eh.AddWriteBuf(wide_newline);
1027
1028         ServerInstance->stats->statsSent += text.length() + 2;
1029         this->bytes_out += text.length() + 2;
1030         this->cmds_out++;
1031 }
1032
1033 /** Write()
1034  */
1035 void LocalUser::Write(const char *text, ...)
1036 {
1037         va_list argsPtr;
1038         char textbuffer[MAXBUF];
1039
1040         va_start(argsPtr, text);
1041         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1042         va_end(argsPtr);
1043
1044         this->Write(std::string(textbuffer));
1045 }
1046
1047 void User::WriteServ(const std::string& text)
1048 {
1049         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1050 }
1051
1052 /** WriteServ()
1053  *  Same as Write(), except `text' is prefixed with `:server.name '.
1054  */
1055 void User::WriteServ(const char* text, ...)
1056 {
1057         va_list argsPtr;
1058         char textbuffer[MAXBUF];
1059
1060         va_start(argsPtr, text);
1061         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1062         va_end(argsPtr);
1063
1064         this->WriteServ(std::string(textbuffer));
1065 }
1066
1067
1068 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1069 {
1070         va_list argsPtr;
1071         char textbuffer[MAXBUF];
1072
1073         va_start(argsPtr, text);
1074         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1075         va_end(argsPtr);
1076
1077         this->WriteNumeric(numeric, std::string(textbuffer));
1078 }
1079
1080 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1081 {
1082         char textbuffer[MAXBUF];
1083         ModResult MOD_RESULT;
1084
1085         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1086
1087         if (MOD_RESULT == MOD_RES_DENY)
1088                 return;
1089
1090         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1091         this->Write(std::string(textbuffer));
1092 }
1093
1094 void User::WriteFrom(User *user, const std::string &text)
1095 {
1096         char tb[MAXBUF];
1097
1098         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1099
1100         this->Write(std::string(tb));
1101 }
1102
1103
1104 /* write text from an originating user to originating user */
1105
1106 void User::WriteFrom(User *user, const char* text, ...)
1107 {
1108         va_list argsPtr;
1109         char textbuffer[MAXBUF];
1110
1111         va_start(argsPtr, text);
1112         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1113         va_end(argsPtr);
1114
1115         this->WriteFrom(user, std::string(textbuffer));
1116 }
1117
1118
1119 /* write text to an destination user from a source user (e.g. user privmsg) */
1120
1121 void User::WriteTo(User *dest, const char *data, ...)
1122 {
1123         char textbuffer[MAXBUF];
1124         va_list argsPtr;
1125
1126         va_start(argsPtr, data);
1127         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1128         va_end(argsPtr);
1129
1130         this->WriteTo(dest, std::string(textbuffer));
1131 }
1132
1133 void User::WriteTo(User *dest, const std::string &data)
1134 {
1135         dest->WriteFrom(this, data);
1136 }
1137
1138 void User::WriteCommon(const char* text, ...)
1139 {
1140         char textbuffer[MAXBUF];
1141         va_list argsPtr;
1142
1143         if (this->registered != REG_ALL || quitting)
1144                 return;
1145
1146         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1147
1148         va_start(argsPtr, text);
1149         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1150         va_end(argsPtr);
1151
1152         this->WriteCommonRaw(std::string(textbuffer), true);
1153 }
1154
1155 void User::WriteCommonExcept(const char* text, ...)
1156 {
1157         char textbuffer[MAXBUF];
1158         va_list argsPtr;
1159
1160         if (this->registered != REG_ALL || quitting)
1161                 return;
1162
1163         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1164
1165         va_start(argsPtr, text);
1166         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1167         va_end(argsPtr);
1168
1169         this->WriteCommonRaw(std::string(textbuffer), false);
1170 }
1171
1172 void User::WriteCommonRaw(const std::string &line, bool include_self)
1173 {
1174         if (this->registered != REG_ALL || quitting)
1175                 return;
1176
1177         LocalUser::already_sent_id++;
1178
1179         UserChanList include_c(chans);
1180         std::map<User*,bool> exceptions;
1181
1182         exceptions[this] = include_self;
1183
1184         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1185
1186         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1187         {
1188                 LocalUser* u = IS_LOCAL(i->first);
1189                 if (u && !u->quitting)
1190                 {
1191                         u->already_sent = LocalUser::already_sent_id;
1192                         if (i->second)
1193                                 u->Write(line);
1194                 }
1195         }
1196         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1197         {
1198                 Channel* c = *v;
1199                 const UserMembList* ulist = c->GetUsers();
1200                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1201                 {
1202                         LocalUser* u = IS_LOCAL(i->first);
1203                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1204                         {
1205                                 u->already_sent = LocalUser::already_sent_id;
1206                                 u->Write(line);
1207                         }
1208                 }
1209         }
1210 }
1211
1212 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1213 {
1214         char tb1[MAXBUF];
1215         char tb2[MAXBUF];
1216
1217         if (this->registered != REG_ALL)
1218                 return;
1219
1220         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1221
1222         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1223         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1224         std::string out1 = tb1;
1225         std::string out2 = tb2;
1226
1227         UserChanList include_c(chans);
1228         std::map<User*,bool> exceptions;
1229
1230         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1231
1232         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1233         {
1234                 LocalUser* u = IS_LOCAL(i->first);
1235                 if (u && !u->quitting)
1236                 {
1237                         u->already_sent = uniq_id;
1238                         if (i->second)
1239                                 u->Write(IS_OPER(u) ? out2 : out1);
1240                 }
1241         }
1242         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1243         {
1244                 const UserMembList* ulist = (*v)->GetUsers();
1245                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1246                 {
1247                         LocalUser* u = IS_LOCAL(i->first);
1248                         if (u && !u->quitting && (u->already_sent != uniq_id))
1249                         {
1250                                 u->already_sent = uniq_id;
1251                                 u->Write(IS_OPER(u) ? out2 : out1);
1252                         }
1253                 }
1254         }
1255 }
1256
1257 void LocalUser::SendText(const std::string& line)
1258 {
1259         Write(line);
1260 }
1261
1262 void RemoteUser::SendText(const std::string& line)
1263 {
1264         ServerInstance->PI->PushToClient(this, line);
1265 }
1266
1267 void FakeUser::SendText(const std::string& line)
1268 {
1269 }
1270
1271 void User::SendText(const char *text, ...)
1272 {
1273         va_list argsPtr;
1274         char line[MAXBUF];
1275
1276         va_start(argsPtr, text);
1277         vsnprintf(line, MAXBUF, text, argsPtr);
1278         va_end(argsPtr);
1279
1280         SendText(std::string(line));
1281 }
1282
1283 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1284 {
1285         char line[MAXBUF];
1286         int start_pos = LinePrefix.length();
1287         int pos = start_pos;
1288         memcpy(line, LinePrefix.data(), pos);
1289         std::string Word;
1290         while (TextStream >> Word)
1291         {
1292                 int len = Word.length();
1293                 if (pos + len + 12 > MAXBUF)
1294                 {
1295                         line[pos] = '\0';
1296                         SendText(std::string(line));
1297                         pos = start_pos;
1298                 }
1299                 line[pos] = ' ';
1300                 memcpy(line + pos + 1, Word.data(), len);
1301                 pos += len + 1;
1302         }
1303         line[pos] = '\0';
1304         SendText(std::string(line));
1305 }
1306
1307 /* return 0 or 1 depending if users u and u2 share one or more common channels
1308  * (used by QUIT, NICK etc which arent channel specific notices)
1309  *
1310  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1311  * the first users channels then the second users channels within the outer loop,
1312  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1313  * all possible iterations). However this new function instead checks against the
1314  * channel's userlist in the inner loop which is a std::map<User*,User*>
1315  * and saves us time as we already know what pointer value we are after.
1316  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1317  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1318  */
1319 bool User::SharesChannelWith(User *other)
1320 {
1321         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1322                 return false;
1323
1324         /* Outer loop */
1325         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1326         {
1327                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1328                  * by replacing it with a map::find which *should* be more efficient
1329                  */
1330                 if ((*i)->HasUser(other))
1331                         return true;
1332         }
1333         return false;
1334 }
1335
1336 bool User::ChangeName(const char* gecos)
1337 {
1338         if (!this->fullname.compare(gecos))
1339                 return true;
1340
1341         if (IS_LOCAL(this))
1342         {
1343                 ModResult MOD_RESULT;
1344                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1345                 if (MOD_RESULT == MOD_RES_DENY)
1346                         return false;
1347                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1348         }
1349         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1350
1351         return true;
1352 }
1353
1354 void User::DoHostCycle(const std::string &quitline)
1355 {
1356         char buffer[MAXBUF];
1357
1358         if (!ServerInstance->Config->CycleHosts)
1359                 return;
1360
1361         already_sent_t silent_id = ++LocalUser::already_sent_id;
1362         already_sent_t seen_id = ++LocalUser::already_sent_id;
1363
1364         UserChanList include_c(chans);
1365         std::map<User*,bool> exceptions;
1366
1367         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1368
1369         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1370         {
1371                 LocalUser* u = IS_LOCAL(i->first);
1372                 if (u && !u->quitting)
1373                 {
1374                         if (i->second)
1375                         {
1376                                 u->already_sent = seen_id;
1377                                 u->Write(quitline);
1378                         }
1379                         else
1380                         {
1381                                 u->already_sent = silent_id;
1382                         }
1383                 }
1384         }
1385         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1386         {
1387                 Channel* c = *v;
1388                 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1389                 std::string joinline(buffer);
1390                 Membership* memb = c->GetUser(this);
1391                 std::string modeline = memb->modes;
1392                 if (modeline.length() > 0)
1393                 {
1394                         for(unsigned int i=0; i < memb->modes.length(); i++)
1395                                 modeline.append(" ").append(nick);
1396                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s", GetFullHost().c_str(), c->name.c_str(), modeline.c_str());
1397                         modeline = buffer;
1398                 }
1399
1400                 const UserMembList *ulist = c->GetUsers();
1401                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1402                 {
1403                         LocalUser* u = IS_LOCAL(i->first);
1404                         if (u == NULL || u == this)
1405                                 continue;
1406                         if (u->already_sent == silent_id)
1407                                 continue;
1408
1409                         if (u->already_sent != seen_id)
1410                         {
1411                                 u->Write(quitline);
1412                                 u->already_sent = seen_id;
1413                         }
1414                         u->Write(joinline);
1415                         if (modeline.length() > 0)
1416                                 u->Write(modeline);
1417                 }
1418         }
1419 }
1420
1421 bool User::ChangeDisplayedHost(const char* shost)
1422 {
1423         if (dhost == shost)
1424                 return true;
1425
1426         if (IS_LOCAL(this))
1427         {
1428                 ModResult MOD_RESULT;
1429                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1430                 if (MOD_RESULT == MOD_RES_DENY)
1431                         return false;
1432         }
1433
1434         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1435
1436         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1437
1438         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1439         this->dhost.assign(shost, 0, 64);
1440
1441         this->InvalidateCache();
1442
1443         this->DoHostCycle(quitstr);
1444
1445         if (IS_LOCAL(this))
1446                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1447
1448         return true;
1449 }
1450
1451 bool User::ChangeIdent(const char* newident)
1452 {
1453         if (this->ident == newident)
1454                 return true;
1455
1456         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1457
1458         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1459
1460         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1461
1462         this->InvalidateCache();
1463
1464         this->DoHostCycle(quitstr);
1465
1466         return true;
1467 }
1468
1469 void User::SendAll(const char* command, const char* text, ...)
1470 {
1471         char textbuffer[MAXBUF];
1472         char formatbuffer[MAXBUF];
1473         va_list argsPtr;
1474
1475         va_start(argsPtr, text);
1476         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1477         va_end(argsPtr);
1478
1479         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1480         std::string fmt = formatbuffer;
1481
1482         for (std::vector<LocalUser*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1483         {
1484                 (*i)->Write(fmt);
1485         }
1486 }
1487
1488
1489 std::string User::ChannelList(User* source, bool spy)
1490 {
1491         std::string list;
1492
1493         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1494         {
1495                 Channel* c = *i;
1496                 /* If the target is the sender, neither +p nor +s is set, or
1497                  * the channel contains the user, it is not a spy channel
1498                  */
1499                 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1500                         list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1501         }
1502
1503         return list;
1504 }
1505
1506 void User::SplitChanList(User* dest, const std::string &cl)
1507 {
1508         std::string line;
1509         std::ostringstream prefix;
1510         std::string::size_type start, pos, length;
1511
1512         prefix << this->nick << " " << dest->nick << " :";
1513         line = prefix.str();
1514         int namelen = ServerInstance->Config->ServerName.length() + 6;
1515
1516         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1517         {
1518                 length = (pos == std::string::npos) ? cl.length() : pos;
1519
1520                 if (line.length() + namelen + length - start > 510)
1521                 {
1522                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1523                         line = prefix.str();
1524                 }
1525
1526                 if(pos == std::string::npos)
1527                 {
1528                         line.append(cl.substr(start, length - start));
1529                         break;
1530                 }
1531                 else
1532                 {
1533                         line.append(cl.substr(start, length - start + 1));
1534                 }
1535         }
1536
1537         if (line.length())
1538         {
1539                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1540         }
1541 }
1542
1543 /*
1544  * Sets a user's connection class.
1545  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1546  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1547  * then their ip will be taken as 'priority' anyway, so for example,
1548  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1549  */
1550 void LocalUser::SetClass(const std::string &explicit_name)
1551 {
1552         ConnectClass *found = NULL;
1553
1554         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1555
1556         if (!explicit_name.empty())
1557         {
1558                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1559                 {
1560                         ConnectClass* c = *i;
1561
1562                         if (explicit_name == c->name)
1563                         {
1564                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1565                                 found = c;
1566                         }
1567                 }
1568         }
1569         else
1570         {
1571                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1572                 {
1573                         ConnectClass* c = *i;
1574                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Checking %s", c->GetName().c_str());
1575
1576                         ModResult MOD_RESULT;
1577                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1578                         if (MOD_RESULT == MOD_RES_DENY)
1579                                 continue;
1580                         if (MOD_RESULT == MOD_RES_ALLOW)
1581                         {
1582                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class forced by module to %s", c->GetName().c_str());
1583                                 found = c;
1584                                 break;
1585                         }
1586
1587                         if (c->type == CC_NAMED)
1588                                 continue;
1589
1590                         bool regdone = (registered != REG_NONE);
1591                         if (c->config->getBool("registered", regdone) != regdone)
1592                                 continue;
1593
1594                         /* check if host matches.. */
1595                         if (c->GetHost().length() && !InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1596                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1597                         {
1598                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1599                                 continue;
1600                         }
1601
1602                         /*
1603                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1604                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1605                          */
1606                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1607                         {
1608                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1609                                 continue;
1610                         }
1611
1612                         /* if it requires a port ... */
1613                         int port = c->config->getInt("port");
1614                         if (port)
1615                         {
1616                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", port);
1617
1618                                 /* and our port doesn't match, fail. */
1619                                 if (this->GetServerPort() != port)
1620                                         continue;
1621                         }
1622
1623                         if (!c->config->getString("pass").empty())
1624                         {
1625                                 if (ServerInstance->PassCompare(this, c->config->getString("pass"), password, c->config->getString("hash")))
1626                                 {
1627                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Bad password, skipping");
1628                                         continue;
1629                                 }
1630                         }
1631
1632                         /* we stop at the first class that meets ALL critera. */
1633                         found = c;
1634                         break;
1635                 }
1636         }
1637
1638         /*
1639          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1640          */
1641         if (found)
1642         {
1643                 MyClass = found;
1644         }
1645 }
1646
1647 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1648  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1649  * then their ip will be taken as 'priority' anyway, so for example,
1650  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1651  */
1652 ConnectClass* LocalUser::GetClass()
1653 {
1654         return MyClass;
1655 }
1656
1657 ConnectClass* User::GetClass()
1658 {
1659         return NULL;
1660 }
1661
1662 void User::PurgeEmptyChannels()
1663 {
1664         // firstly decrement the count on each channel
1665         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1666         {
1667                 Channel* c = *f;
1668                 c->DelUser(this);
1669         }
1670
1671         this->UnOper();
1672 }
1673
1674 const std::string& FakeUser::GetFullHost()
1675 {
1676         if (!ServerInstance->Config->HideWhoisServer.empty())
1677                 return ServerInstance->Config->HideWhoisServer;
1678         return server;
1679 }
1680
1681 const std::string& FakeUser::GetFullRealHost()
1682 {
1683         if (!ServerInstance->Config->HideWhoisServer.empty())
1684                 return ServerInstance->Config->HideWhoisServer;
1685         return server;
1686 }
1687
1688 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1689         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1690         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1691         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxchans(0), limit(0)
1692 {
1693 }
1694
1695 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1696         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1697         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1698         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1699         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1700         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxchans(parent.maxchans),
1701         limit(parent.limit)
1702 {
1703 }
1704
1705 void ConnectClass::Update(const ConnectClass* src)
1706 {
1707         name = src->name;
1708         registration_timeout = src->registration_timeout;
1709         host = src->host;
1710         pingtime = src->pingtime;
1711         softsendqmax = src->softsendqmax;
1712         hardsendqmax = src->hardsendqmax;
1713         recvqmax = src->recvqmax;
1714         penaltythreshold = src->penaltythreshold;
1715         maxlocal = src->maxlocal;
1716         maxglobal = src->maxglobal;
1717         limit = src->limit;
1718 }