src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core: libIRCDusers */
  15
  16 #include "inspircd.h"
  17 #include <stdarg.h>
  18 #include "socketengine.h"
  19 #include "wildcard.h"
  20 #include "xline.h"
  21 #include "bancache.h"
  22 #include "commands/cmd_whowas.h"
  23
  24 /* XXX: Used for speeding up WriteCommon operations */
  25 unsigned long uniq_id = 1;
  26
  27 static unsigned long* already_sent = NULL;
  28
  29
  30 void InitializeAlreadySent(SocketEngine* SE)
  31 {
  32         already_sent = new unsigned long[SE->GetMaxFds()];
  33         memset(already_sent, 0, SE->GetMaxFds() * sizeof(unsigned long));
  34 }
  35
  36
  37 std::string User::ProcessNoticeMasks(const char *sm)
  38 {
  39         bool adding = true, oldadding = false;
  40         const char *c = sm;
  41         std::string output;
  42
  43         while (c && *c)
  44         {
  45                 switch (*c)
  46                 {
  47                         case '+':
  48                                 adding = true;
  49                         break;
  50                         case '-':
  51                                 adding = false;
  52                         break;
  53                         case '*':
  54                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  55                                 {
  56                                         if (ServerInstance->SNO->IsEnabled(d))
  57                                         {
  58                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  59                                                 {
  60                                                         if ((oldadding != adding) || (!output.length()))
  61                                                                 output += (adding ? '+' : '-');
  62
  63                                                         this->SetNoticeMask(d, adding);
  64
  65                                                         output += d;
  66                                                 }
  67                                         }
  68                                         oldadding = adding;
  69                                 }
  70                         break;
  71                         default:
  72                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  73                                 {
  74                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  75                                         {
  76                                                 if ((oldadding != adding) || (!output.length()))
  77                                                         output += (adding ? '+' : '-');
  78
  79                                                 this->SetNoticeMask(*c, adding);
  80
  81                                                 output += *c;
  82                                         }
  83                                 }
  84                                 else
  85                                         this->WriteNumeric(501, "%s %c :is unknown snomask char to me", this->nick, *c);
  86
  87                                 oldadding = adding;
  88                         break;
  89                 }
  90
  91                 *c++;
  92         }
  93
  94         return output;
  95 }
  96
  97 void User::StartDNSLookup()
  98 {
  99         try
 100         {
 101                 bool cached;
 102                 const char* sip = this->GetIPString(false);
 103
 104                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
 105                 if (!strncmp(sip, "0::ffff:", 8))
 106                         res_reverse = new UserResolver(this->ServerInstance, this, sip + 8, DNS_QUERY_PTR4, cached);
 107                 else
 108                         res_reverse = new UserResolver(this->ServerInstance, this, sip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 109
 110                 this->ServerInstance->AddResolver(res_reverse, cached);
 111         }
 112         catch (CoreException& e)
 113         {
 114                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 115         }
 116 }
 117
 118 bool User::IsNoticeMaskSet(unsigned char sm)
 119 {
 120         return (snomasks[sm-65]);
 121 }
 122
 123 void User::SetNoticeMask(unsigned char sm, bool value)
 124 {
 125         snomasks[sm-65] = value;
 126 }
 127
 128 const char* User::FormatNoticeMasks()
 129 {
 130         static char data[MAXBUF];
 131         int offset = 0;
 132
 133         for (int n = 0; n < 64; n++)
 134         {
 135                 if (snomasks[n])
 136                         data[offset++] = n+65;
 137         }
 138
 139         data[offset] = 0;
 140         return data;
 141 }
 142
 143
 144
 145 bool User::IsModeSet(unsigned char m)
 146 {
 147         return (modes[m-65]);
 148 }
 149
 150 void User::SetMode(unsigned char m, bool value)
 151 {
 152         modes[m-65] = value;
 153 }
 154
 155 const char* User::FormatModes()
 156 {
 157         static char data[MAXBUF];
 158         int offset = 0;
 159         for (int n = 0; n < 64; n++)
 160         {
 161                 if (modes[n])
 162                         data[offset++] = n+65;
 163         }
 164         data[offset] = 0;
 165         return data;
 166 }
 167
 168 void User::DecrementModes()
 169 {
 170         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 171         for (unsigned char n = 'A'; n <= 'z'; n++)
 172         {
 173                 if (modes[n-65])
 174                 {
 175                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 176                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 177                         if (mh)
 178                         {
 179                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 180                                 mh->ChangeCount(-1);
 181                         }
 182                 }
 183         }
 184 }
 185
 186 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 187 {
 188         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 189         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 190         reset_due = ServerInstance->Time();
 191         age = ServerInstance->Time();
 192         Penalty = 0;
 193         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 194         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 195         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 196         fd = -1;
 197         recvq.clear();
 198         sendq.clear();
 199         WriteError.clear();
 200         res_forward = res_reverse = NULL;
 201         Visibility = NULL;
 202         ip = NULL;
 203         MyClass = NULL;
 204         io = NULL;
 205         AllowedUserModes = NULL;
 206         AllowedChanModes = NULL;
 207         AllowedOperCommands = NULL;
 208         chans.clear();
 209         invites.clear();
 210         memset(modes,0,sizeof(modes));
 211         memset(snomasks,0,sizeof(snomasks));
 212         /* Invalidate cache */
 213         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 214
 215         if (uid.empty())
 216                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 217         else
 218                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 219
 220         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 221
 222         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 223         if (finduuid == Instance->Users->uuidlist->end())
 224                 (*Instance->Users->uuidlist)[uuid] = this;
 225         else
 226                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 227 }
 228
 229 User::~User()
 230 {
 231         /* NULL for remote users :) */
 232         if (this->MyClass)
 233         {
 234                 this->MyClass->RefCount--;
 235                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %lu", this->MyClass->RefCount);
 236         }
 237         if (this->AllowedOperCommands)
 238         {
 239                 delete AllowedOperCommands;
 240                 AllowedOperCommands = NULL;
 241         }
 242
 243         if (this->AllowedUserModes)
 244         {
 245                 delete[] AllowedUserModes;
 246                 AllowedUserModes = NULL;
 247         }
 248
 249         if (this->AllowedChanModes)
 250         {
 251                 delete[] AllowedChanModes;
 252                 AllowedChanModes = NULL;
 253         }
 254
 255         this->InvalidateCache();
 256         this->DecrementModes();
 257
 258         if (ip)
 259         {
 260                 ServerInstance->Users->RemoveCloneCounts(this);
 261
 262                 if (this->GetProtocolFamily() == AF_INET)
 263                 {
 264                         delete (sockaddr_in*)ip;
 265                 }
 266 #ifdef SUPPORT_IP6LINKS
 267                 else
 268                 {
 269                         delete (sockaddr_in6*)ip;
 270                 }
 271 #endif
 272         }
 273
 274         ServerInstance->Users->uuidlist->erase(uuid);
 275 }
 276
 277 char* User::MakeHost()
 278 {
 279         if (this->cached_makehost)
 280                 return this->cached_makehost;
 281
 282         char nhost[MAXBUF];
 283         /* This is much faster than snprintf */
 284         char* t = nhost;
 285         for(char* n = ident; *n; n++)
 286                 *t++ = *n;
 287         *t++ = '@';
 288         for(char* n = host; *n; n++)
 289                 *t++ = *n;
 290         *t = 0;
 291
 292         this->cached_makehost = strdup(nhost);
 293
 294         return this->cached_makehost;
 295 }
 296
 297 char* User::MakeHostIP()
 298 {
 299         if (this->cached_hostip)
 300                 return this->cached_hostip;
 301
 302         char ihost[MAXBUF];
 303         /* This is much faster than snprintf */
 304         char* t = ihost;
 305         for(char* n = ident; *n; n++)
 306                 *t++ = *n;
 307         *t++ = '@';
 308         for(const char* n = this->GetIPString(); *n; n++)
 309                 *t++ = *n;
 310         *t = 0;
 311
 312         this->cached_hostip = strdup(ihost);
 313
 314         return this->cached_hostip;
 315 }
 316
 317 void User::CloseSocket()
 318 {
 319         if (this->fd > -1)
 320         {
 321                 ServerInstance->SE->Shutdown(this, 2);
 322                 ServerInstance->SE->Close(this);
 323         }
 324 }
 325
 326 char* User::GetFullHost()
 327 {
 328         if (this->cached_fullhost)
 329                 return this->cached_fullhost;
 330
 331         char result[MAXBUF];
 332         char* t = result;
 333         for(char* n = nick; *n; n++)
 334                 *t++ = *n;
 335         *t++ = '!';
 336         for(char* n = ident; *n; n++)
 337                 *t++ = *n;
 338         *t++ = '@';
 339         for(char* n = dhost; *n; n++)
 340                 *t++ = *n;
 341         *t = 0;
 342
 343         this->cached_fullhost = strdup(result);
 344
 345         return this->cached_fullhost;
 346 }
 347
 348 char* User::MakeWildHost()
 349 {
 350         static char nresult[MAXBUF];
 351         char* t = nresult;
 352         *t++ = '*';     *t++ = '!';
 353         *t++ = '*';     *t++ = '@';
 354         for(char* n = dhost; *n; n++)
 355                 *t++ = *n;
 356         *t = 0;
 357         return nresult;
 358 }
 359
 360 int User::ReadData(void* buffer, size_t size)
 361 {
 362         if (IS_LOCAL(this))
 363         {
 364 #ifndef WIN32
 365                 return read(this->fd, buffer, size);
 366 #else
 367                 return recv(this->fd, (char*)buffer, size, 0);
 368 #endif
 369         }
 370         else
 371                 return 0;
 372 }
 373
 374
 375 char* User::GetFullRealHost()
 376 {
 377         if (this->cached_fullrealhost)
 378                 return this->cached_fullrealhost;
 379
 380         char fresult[MAXBUF];
 381         char* t = fresult;
 382         for(char* n = nick; *n; n++)
 383                 *t++ = *n;
 384         *t++ = '!';
 385         for(char* n = ident; *n; n++)
 386                 *t++ = *n;
 387         *t++ = '@';
 388         for(char* n = host; *n; n++)
 389                 *t++ = *n;
 390         *t = 0;
 391
 392         this->cached_fullrealhost = strdup(fresult);
 393
 394         return this->cached_fullrealhost;
 395 }
 396
 397 bool User::IsInvited(const irc::string &channel)
 398 {
 399         time_t now = time(NULL);
 400         InvitedList::iterator safei;
 401         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 402         {
 403                 if (channel == i->first)
 404                 {
 405                         if (i->second != 0 && now > i->second)
 406                         {
 407                                 /* Expired invite, remove it. */
 408                                 safei = i;
 409                                 --i;
 410                                 invites.erase(safei);
 411                                 continue;
 412                         }
 413                         return true;
 414                 }
 415         }
 416         return false;
 417 }
 418
 419 InvitedList* User::GetInviteList()
 420 {
 421         time_t now = time(NULL);
 422         /* Weed out expired invites here. */
 423         InvitedList::iterator safei;
 424         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 425         {
 426                 if (i->second != 0 && now > i->second)
 427                 {
 428                         /* Expired invite, remove it. */
 429                         safei = i;
 430                         --i;
 431                         invites.erase(safei);
 432                 }
 433         }
 434         return &invites;
 435 }
 436
 437 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 438 {
 439         time_t now = time(NULL);
 440         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 441         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 442         {
 443                 if (channel == i->first)
 444                 {
 445                         if (i->second != 0 && invtimeout > i->second)
 446                         {
 447                                 i->second = invtimeout;
 448                         }
 449                 }
 450         }
 451         invites.push_back(std::make_pair(channel, invtimeout));
 452 }
 453
 454 void User::RemoveInvite(const irc::string &channel)
 455 {
 456         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 457         {
 458                 if (channel == i->first)
 459                 {
 460                         invites.erase(i);
 461                         return;
 462                 }
 463         }
 464 }
 465
 466 bool User::HasModePermission(unsigned char mode, ModeType type)
 467 {
 468         if (!IS_LOCAL(this))
 469                 return true;
 470
 471         if (!IS_OPER(this))
 472                 return false;
 473
 474         if (!AllowedUserModes || !AllowedChanModes)
 475                 return false;
 476
 477         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 478
 479 }
 480
 481 bool User::HasPermission(const std::string &command)
 482 {
 483         /*
 484          * users on remote servers can completely bypass all permissions based checks.
 485          * This prevents desyncs when one server has different type/class tags to another.
 486          * That having been said, this does open things up to the possibility of source changes
 487          * allowing remote kills, etc - but if they have access to the src, they most likely have
 488          * access to the conf - so it's an end to a means either way.
 489          */
 490         if (!IS_LOCAL(this))
 491                 return true;
 492
 493         // are they even an oper at all?
 494         if (!IS_OPER(this))
 495         {
 496                 return false;
 497         }
 498
 499         if (!AllowedOperCommands)
 500                 return false;
 501
 502         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 503                 return true;
 504         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 505                 return true;
 506
 507         return false;
 508 }
 509
 510 /** NOTE: We cannot pass a const reference to this method.
 511  * The string is changed by the workings of the method,
 512  * so that if we pass const ref, we end up copying it to
 513  * something we can change anyway. Makes sense to just let
 514  * the compiler do that copy for us.
 515  */
 516 bool User::AddBuffer(std::string a)
 517 {
 518         try
 519         {
 520                 std::string::size_type i = a.rfind('\r');
 521
 522                 while (i != std::string::npos)
 523                 {
 524                         a.erase(i, 1);
 525                         i = a.rfind('\r');
 526                 }
 527
 528                 if (a.length())
 529                         recvq.append(a);
 530
 531                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 532                 {
 533                         this->SetWriteError("RecvQ exceeded");
 534                         ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %lu exceeds connect class maximum of %lu",this->nick,(unsigned long int)recvq.length(),this->MyClass->GetRecvqMax());
 535                         return false;
 536                 }
 537
 538                 return true;
 539         }
 540
 541         catch (...)
 542         {
 543                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::AddBuffer()");
 544                 return false;
 545         }
 546 }
 547
 548 bool User::BufferIsReady()
 549 {
 550         return (recvq.find('\n') != std::string::npos);
 551 }
 552
 553 void User::ClearBuffer()
 554 {
 555         recvq.clear();
 556 }
 557
 558 std::string User::GetBuffer()
 559 {
 560         try
 561         {
 562                 if (recvq.empty())
 563                         return "";
 564
 565                 /* Strip any leading \r or \n off the string.
 566                  * Usually there are only one or two of these,
 567                  * so its is computationally cheap to do.
 568                  */
 569                 std::string::iterator t = recvq.begin();
 570                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 571                 {
 572                         recvq.erase(t);
 573                         t = recvq.begin();
 574                 }
 575
 576                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 577                 {
 578                         /* Find the first complete line, return it as the
 579                          * result, and leave the recvq as whats left
 580                          */
 581                         if (*x == '\n')
 582                         {
 583                                 std::string ret = std::string(recvq.begin(), x);
 584                                 recvq.erase(recvq.begin(), x + 1);
 585                                 return ret;
 586                         }
 587                 }
 588                 return "";
 589         }
 590
 591         catch (...)
 592         {
 593                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 594                 return "";
 595         }
 596 }
 597
 598 void User::AddWriteBuf(const std::string &data)
 599 {
 600         if (*this->GetWriteError())
 601                 return;
 602
 603         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 604         {
 605                 /*
 606                  * Fix by brain - Set the error text BEFORE calling, because
 607                  * if we dont it'll recursively  call here over and over again trying
 608                  * to repeatedly add the text to the sendq!
 609                  */
 610                 this->SetWriteError("SendQ exceeded");
 611                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %lu exceeds connect class maximum of %lu",this->nick,(unsigned long int)sendq.length() + data.length(),this->MyClass->GetSendqMax());
 612                 return;
 613         }
 614
 615         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 616                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 617         else
 618                 sendq.append(data);
 619 }
 620
 621 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 622 void User::FlushWriteBuf()
 623 {
 624         try
 625         {
 626                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 627                 {
 628                         sendq.clear();
 629                 }
 630                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 631                 {
 632                         int old_sendq_length = sendq.length();
 633                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 634
 635                         if (n_sent == -1)
 636                         {
 637                                 if (errno == EAGAIN)
 638                                 {
 639                                         /* The socket buffer is full. This isnt fatal,
 640                                          * try again later.
 641                                          */
 642                                         this->ServerInstance->SE->WantWrite(this);
 643                                 }
 644                                 else
 645                                 {
 646                                         /* Fatal error, set write error and bail
 647                                          */
 648                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 649                                         return;
 650                                 }
 651                         }
 652                         else
 653                         {
 654                                 /* advance the queue */
 655                                 if (n_sent)
 656                                         this->sendq = this->sendq.substr(n_sent);
 657                                 /* update the user's stats counters */
 658                                 this->bytes_out += n_sent;
 659                                 this->cmds_out++;
 660                                 if (n_sent != old_sendq_length)
 661                                         this->ServerInstance->SE->WantWrite(this);
 662                         }
 663                 }
 664         }
 665
 666         catch (...)
 667         {
 668                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 669         }
 670
 671         if (this->sendq.empty())
 672         {
 673                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 674         }
 675 }
 676
 677 void User::SetWriteError(const std::string &error)
 678 {
 679         // don't try to set the error twice, its already set take the first string.
 680         if (this->WriteError.empty())
 681                 this->WriteError = error;
 682 }
 683
 684 const char* User::GetWriteError()
 685 {
 686         return this->WriteError.c_str();
 687 }
 688
 689 void User::Oper(const std::string &opertype, const std::string &opername)
 690 {
 691         char* mycmd;
 692         char* savept;
 693         char* savept2;
 694
 695         try
 696         {
 697                 this->modes[UM_OPERATOR] = 1;
 698                 this->WriteServ("MODE %s :+o", this->nick);
 699                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 700                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 701                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 702                 ServerInstance->Users->all_opers.push_back(this);
 703
 704                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 705                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 706                 {
 707
 708                         if (AllowedOperCommands)
 709                                 AllowedOperCommands->clear();
 710                         else
 711                                 AllowedOperCommands = new std::map<std::string, bool>;
 712
 713                         if (!AllowedChanModes)
 714                                 AllowedChanModes = new bool[64];
 715
 716                         if (!AllowedUserModes)
 717                                 AllowedUserModes = new bool[64];
 718
 719                         memset(AllowedUserModes, 0, 64);
 720                         memset(AllowedChanModes, 0, 64);
 721
 722                         char* Classes = strdup(iter_opertype->second);
 723                         char* myclass = strtok_r(Classes," ",&savept);
 724                         while (myclass)
 725                         {
 726                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 727                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 728                                 {
 729                                         char* CommandList = strdup(iter_operclass->second.commandlist);
 730                                         mycmd = strtok_r(CommandList," ",&savept2);
 731                                         while (mycmd)
 732                                         {
 733                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 734                                                 mycmd = strtok_r(NULL," ",&savept2);
 735                                         }
 736                                         free(CommandList);
 737                                         this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 738                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 739                                         {
 740                                                 if (*c == '*')
 741                                                 {
 742                                                         memset(this->AllowedUserModes, (int)(true), 64);
 743                                                 }
 744                                                 else
 745                                                 {
 746                                                         this->AllowedUserModes[*c - 'A'] = true;
 747                                                 }
 748                                         }
 749                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 750                                         {
 751                                                 if (*c == '*')
 752                                                 {
 753                                                         memset(this->AllowedChanModes, (int)(true), 64);
 754                                                 }
 755                                                 else
 756                                                 {
 757                                                         this->AllowedChanModes[*c - 'A'] = true;
 758                                                 }
 759                                         }
 760                                 }
 761                                 myclass = strtok_r(NULL," ",&savept);
 762                         }
 763                         free(Classes);
 764                 }
 765
 766                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 767         }
 768
 769         catch (...)
 770         {
 771                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 772         }
 773 }
 774
 775 void User::UnOper()
 776 {
 777         if (IS_OPER(this))
 778         {
 779                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 780                 std::string moderemove("-");
 781
 782                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 783                 {
 784                         if (letter != 'o')
 785                         {
 786                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 787                                 if (mh && mh->NeedsOper())
 788                                         moderemove += letter;
 789                         }
 790                 }
 791
 792                 const char* parameters[] = { this->nick, moderemove.c_str() };
 793                 ServerInstance->Parser->CallHandler("MODE", parameters, 2, this);
 794
 795                 /* unset their oper type (what IS_OPER checks), and remove +o */
 796                 *this->oper = 0;
 797                 this->modes[UM_OPERATOR] = 0;
 798
 799                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 800                 ServerInstance->Users->all_opers.remove(this);
 801
 802                 if (AllowedOperCommands)
 803                 {
 804                         delete AllowedOperCommands;
 805                         AllowedOperCommands = NULL;
 806                 }
 807                 if (AllowedUserModes)
 808                 {
 809                         delete[] AllowedUserModes;
 810                         AllowedUserModes = NULL;
 811                 }
 812                 if (AllowedChanModes)
 813                 {
 814                         delete[] AllowedChanModes;
 815                         AllowedChanModes = NULL;
 816                 }
 817
 818         }
 819 }
 820
 821 /* adds or updates an entry in the whowas list */
 822 void User::AddToWhoWas()
 823 {
 824         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 825         if (whowas_command)
 826         {
 827                 std::deque<classbase*> params;
 828                 params.push_back(this);
 829                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 830         }
 831 }
 832
 833 /*
 834  * Check class restrictions
 835  */
 836 void User::CheckClass()
 837 {
 838         ConnectClass* a = this->MyClass;
 839
 840         if ((!a) || (a->GetType() == CC_DENY))
 841         {
 842                 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
 843                 return;
 844         }
 845         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 846         {
 847                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 848                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 849                 return;
 850         }
 851         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 852         {
 853                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 854                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 855                 return;
 856         }
 857
 858         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 859         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 860         this->MaxChans = a->GetMaxChans();
 861 }
 862
 863 void User::CheckLines()
 864 {
 865         const char* check[] = { "G" , "K", NULL };
 866
 867         if (!this->exempt)
 868         {
 869                 for (int n = 0; check[n]; ++n)
 870                 {
 871                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 872
 873                         if (r)
 874                         {
 875                                 r->Apply(this);
 876                                 return;
 877                         }
 878                 }
 879         }
 880 }
 881
 882 void User::FullConnect()
 883 {
 884         ServerInstance->stats->statsConnects++;
 885         this->idle_lastmsg = ServerInstance->Time();
 886
 887         /*
 888          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 889          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 890          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 891          * Don't remove this! -- w00t
 892          */
 893         this->SetClass();
 894
 895         /* Check the password, if one is required by the user's connect class.
 896          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 897          */
 898         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 899         {
 900                 ServerInstance->Users->QuitUser(this, "Invalid password");
 901                 return;
 902         }
 903
 904         CheckLines();
 905
 906         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 907         this->WriteNumeric(001, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 908         this->WriteNumeric(002, "%s :Your host is %s, running version InspIRCd-1.2",this->nick,ServerInstance->Config->ServerName);
 909         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 910         this->WriteNumeric(004, "%s %s InspIRCd-1.2 %s %s %s", this->nick, ServerInstance->Config->ServerName, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 911
 912         ServerInstance->Config->Send005(this);
 913         this->WriteNumeric(42, "%s %s :your unique ID", this->nick, this->uuid);
 914
 915
 916         this->ShowMOTD();
 917
 918         /* Now registered */
 919         if (ServerInstance->Users->unregistered_count)
 920                 ServerInstance->Users->unregistered_count--;
 921
 922         /* Trigger LUSERS output, give modules a chance too */
 923         int MOD_RESULT = 0;
 924         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 925         if (!MOD_RESULT)
 926                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 927
 928         /*
 929          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 930          * for a user that doesn't exist yet.
 931          */
 932         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 933
 934         this->registered = REG_ALL;
 935
 936         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 937
 938         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString(), this->fullname);
 939         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 940         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 941 }
 942
 943 /** User::UpdateNick()
 944  * re-allocates a nick in the user_hash after they change nicknames,
 945  * returns a pointer to the new user as it may have moved
 946  */
 947 User* User::UpdateNickHash(const char* New)
 948 {
 949         //user_hash::iterator newnick;
 950         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 951
 952         if (!strcasecmp(this->nick,New))
 953                 return oldnick->second;
 954
 955         if (oldnick == ServerInstance->Users->clientlist->end())
 956                 return NULL; /* doesnt exist */
 957
 958         User* olduser = oldnick->second;
 959         (*(ServerInstance->Users->clientlist))[New] = olduser;
 960         ServerInstance->Users->clientlist->erase(oldnick);
 961         return olduser;
 962 }
 963
 964 void User::InvalidateCache()
 965 {
 966         /* Invalidate cache */
 967         if (cached_fullhost)
 968                 free(cached_fullhost);
 969         if (cached_hostip)
 970                 free(cached_hostip);
 971         if (cached_makehost)
 972                 free(cached_makehost);
 973         if (cached_fullrealhost)
 974                 free(cached_fullrealhost);
 975         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 976 }
 977
 978 bool User::ForceNickChange(const char* newnick)
 979 {
 980         int MOD_RESULT = 0;
 981
 982         this->InvalidateCache();
 983
 984         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 985
 986         if (MOD_RESULT)
 987         {
 988                 ServerInstance->stats->statsCollisions++;
 989                 return false;
 990         }
 991
 992         std::deque<classbase*> dummy;
 993         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 994         if (nickhandler) // wtfbbq, when would this not be here
 995         {
 996                 nickhandler->HandleInternal(1, dummy);
 997                 bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
 998                 nickhandler->HandleInternal(0, dummy);
 999                 return result;
1000         }
1001
1002         // Unreachable, we hope
1003         return false;
1004 }
1005
1006 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1007 {
1008         this->cachedip = "";
1009
1010         switch (protocol_family)
1011         {
1012 #ifdef SUPPORT_IP6LINKS
1013                 case AF_INET6:
1014                 {
1015                         sockaddr_in6* sin = new sockaddr_in6;
1016                         sin->sin6_family = AF_INET6;
1017                         sin->sin6_port = port;
1018                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1019                         this->ip = (sockaddr*)sin;
1020                 }
1021                 break;
1022 #endif
1023                 case AF_INET:
1024                 {
1025                         sockaddr_in* sin = new sockaddr_in;
1026                         sin->sin_family = AF_INET;
1027                         sin->sin_port = port;
1028                         inet_pton(AF_INET, sip, &sin->sin_addr);
1029                         this->ip = (sockaddr*)sin;
1030                 }
1031                 break;
1032                 default:
1033                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1034                 break;
1035         }
1036 }
1037
1038 int User::GetPort()
1039 {
1040         if (this->ip == NULL)
1041                 return 0;
1042
1043         switch (this->GetProtocolFamily())
1044         {
1045 #ifdef SUPPORT_IP6LINKS
1046                 case AF_INET6:
1047                 {
1048                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1049                         return sin->sin6_port;
1050                 }
1051                 break;
1052 #endif
1053                 case AF_INET:
1054                 {
1055                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1056                         return sin->sin_port;
1057                 }
1058                 break;
1059                 default:
1060                 break;
1061         }
1062         return 0;
1063 }
1064
1065 int User::GetProtocolFamily()
1066 {
1067         if (this->ip == NULL)
1068                 return 0;
1069
1070         sockaddr_in* sin = (sockaddr_in*)this->ip;
1071         return sin->sin_family;
1072 }
1073
1074 /*
1075  * XXX the duplication here is horrid..
1076  * do we really need two methods doing essentially the same thing?
1077  */
1078 const char* User::GetIPString(bool translate4in6)
1079 {
1080         static char buf[1024];
1081
1082         if (this->ip == NULL)
1083                 return "";
1084
1085         if (!this->cachedip.empty())
1086                 return this->cachedip.c_str();
1087
1088         switch (this->GetProtocolFamily())
1089         {
1090 #ifdef SUPPORT_IP6LINKS
1091                 case AF_INET6:
1092                 {
1093                         static char temp[1024];
1094
1095                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1096                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1097                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1098                         if (*buf == ':')
1099                         {
1100                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1101                                 *temp = '0';
1102                                 if (translate4in6 && !strncmp(temp, "0::ffff:", 8))
1103                                 {
1104                                         this->cachedip = temp + 8;
1105                                         return temp + 8;
1106                                 }
1107
1108                                 this->cachedip = temp;
1109                                 return temp;
1110                         }
1111
1112                         this->cachedip = buf;
1113                         return buf;
1114                 }
1115                 break;
1116 #endif
1117                 case AF_INET:
1118                 {
1119                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1120                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1121                         this->cachedip = buf;
1122                         return buf;
1123                 }
1124                 break;
1125                 default:
1126                 break;
1127         }
1128
1129         // Unreachable, probably
1130         return "";
1131 }
1132
1133 /** NOTE: We cannot pass a const reference to this method.
1134  * The string is changed by the workings of the method,
1135  * so that if we pass const ref, we end up copying it to
1136  * something we can change anyway. Makes sense to just let
1137  * the compiler do that copy for us.
1138  */
1139 void User::Write(std::string text)
1140 {
1141         if (!ServerInstance->SE->BoundsCheckFd(this))
1142                 return;
1143
1144         try
1145         {
1146                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1147                 text.append("\r\n");
1148         }
1149         catch (...)
1150         {
1151                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1152                 return;
1153         }
1154
1155         if (this->io)
1156         {
1157                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1158                  * implement their own buffering mechanisms
1159                  */
1160                 try
1161                 {
1162                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1163                 }
1164                 catch (CoreException& modexcept)
1165                 {
1166                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1167                 }
1168         }
1169         else
1170         {
1171                 this->AddWriteBuf(text);
1172         }
1173         ServerInstance->stats->statsSent += text.length();
1174         this->ServerInstance->SE->WantWrite(this);
1175 }
1176
1177 /** Write()
1178  */
1179 void User::Write(const char *text, ...)
1180 {
1181         va_list argsPtr;
1182         char textbuffer[MAXBUF];
1183
1184         va_start(argsPtr, text);
1185         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1186         va_end(argsPtr);
1187
1188         this->Write(std::string(textbuffer));
1189 }
1190
1191 void User::WriteServ(const std::string& text)
1192 {
1193         char textbuffer[MAXBUF];
1194
1195         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1196         this->Write(std::string(textbuffer));
1197 }
1198
1199 /** WriteServ()
1200  *  Same as Write(), except `text' is prefixed with `:server.name '.
1201  */
1202 void User::WriteServ(const char* text, ...)
1203 {
1204         va_list argsPtr;
1205         char textbuffer[MAXBUF];
1206
1207         va_start(argsPtr, text);
1208         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1209         va_end(argsPtr);
1210
1211         this->WriteServ(std::string(textbuffer));
1212 }
1213
1214
1215 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1216 {
1217         va_list argsPtr;
1218         char textbuffer[MAXBUF];
1219
1220         va_start(argsPtr, text);
1221         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1222         va_end(argsPtr);
1223
1224         this->WriteNumeric(numeric, std::string(textbuffer));
1225 }
1226
1227 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1228 {
1229         char textbuffer[MAXBUF];
1230         int MOD_RESULT = 0;
1231
1232         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1233
1234         if (MOD_RESULT)
1235                 return;
1236
1237         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1238         this->Write(std::string(textbuffer));
1239 }
1240
1241 void User::WriteFrom(User *user, const std::string &text)
1242 {
1243         char tb[MAXBUF];
1244
1245         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1246
1247         this->Write(std::string(tb));
1248 }
1249
1250
1251 /* write text from an originating user to originating user */
1252
1253 void User::WriteFrom(User *user, const char* text, ...)
1254 {
1255         va_list argsPtr;
1256         char textbuffer[MAXBUF];
1257
1258         va_start(argsPtr, text);
1259         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1260         va_end(argsPtr);
1261
1262         this->WriteFrom(user, std::string(textbuffer));
1263 }
1264
1265
1266 /* write text to an destination user from a source user (e.g. user privmsg) */
1267
1268 void User::WriteTo(User *dest, const char *data, ...)
1269 {
1270         char textbuffer[MAXBUF];
1271         va_list argsPtr;
1272
1273         va_start(argsPtr, data);
1274         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1275         va_end(argsPtr);
1276
1277         this->WriteTo(dest, std::string(textbuffer));
1278 }
1279
1280 void User::WriteTo(User *dest, const std::string &data)
1281 {
1282         dest->WriteFrom(this, data);
1283 }
1284
1285
1286 void User::WriteCommon(const char* text, ...)
1287 {
1288         char textbuffer[MAXBUF];
1289         va_list argsPtr;
1290
1291         if (this->registered != REG_ALL)
1292                 return;
1293
1294         va_start(argsPtr, text);
1295         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1296         va_end(argsPtr);
1297
1298         this->WriteCommon(std::string(textbuffer));
1299 }
1300
1301 void User::WriteCommon(const std::string &text)
1302 {
1303         bool sent_to_at_least_one = false;
1304         char tb[MAXBUF];
1305
1306         if (this->registered != REG_ALL)
1307                 return;
1308
1309         uniq_id++;
1310
1311         if (!already_sent)
1312                 InitializeAlreadySent(ServerInstance->SE);
1313
1314         /* We dont want to be doing this n times, just once */
1315         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1316         std::string out = tb;
1317
1318         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1319         {
1320                 CUList* ulist = v->first->GetUsers();
1321                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1322                 {
1323                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1324                         {
1325                                 already_sent[i->first->fd] = uniq_id;
1326                                 i->first->Write(out);
1327                                 sent_to_at_least_one = true;
1328                         }
1329                 }
1330         }
1331
1332         /*
1333          * if the user was not in any channels, no users will receive the text. Make sure the user
1334          * receives their OWN message for WriteCommon
1335          */
1336         if (!sent_to_at_least_one)
1337         {
1338                 this->Write(std::string(tb));
1339         }
1340 }
1341
1342
1343 /* write a formatted string to all users who share at least one common
1344  * channel, NOT including the source user e.g. for use in QUIT
1345  */
1346
1347 void User::WriteCommonExcept(const char* text, ...)
1348 {
1349         char textbuffer[MAXBUF];
1350         va_list argsPtr;
1351
1352         va_start(argsPtr, text);
1353         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1354         va_end(argsPtr);
1355
1356         this->WriteCommonExcept(std::string(textbuffer));
1357 }
1358
1359 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1360 {
1361         char tb1[MAXBUF];
1362         char tb2[MAXBUF];
1363
1364         if (this->registered != REG_ALL)
1365                 return;
1366
1367         uniq_id++;
1368
1369         if (!already_sent)
1370                 InitializeAlreadySent(ServerInstance->SE);
1371
1372         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1373         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1374         std::string out1 = tb1;
1375         std::string out2 = tb2;
1376
1377         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1378         {
1379                 CUList *ulist = v->first->GetUsers();
1380                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1381                 {
1382                         if (this != i->first)
1383                         {
1384                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1385                                 {
1386                                         already_sent[i->first->fd] = uniq_id;
1387                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1388                                 }
1389                         }
1390                 }
1391         }
1392 }
1393
1394 void User::WriteCommonExcept(const std::string &text)
1395 {
1396         char tb1[MAXBUF];
1397         std::string out1;
1398
1399         if (this->registered != REG_ALL)
1400                 return;
1401
1402         uniq_id++;
1403
1404         if (!already_sent)
1405                 InitializeAlreadySent(ServerInstance->SE);
1406
1407         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1408         out1 = tb1;
1409
1410         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1411         {
1412                 CUList *ulist = v->first->GetUsers();
1413                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1414                 {
1415                         if (this != i->first)
1416                         {
1417                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1418                                 {
1419                                         already_sent[i->first->fd] = uniq_id;
1420                                         i->first->Write(out1);
1421                                 }
1422                         }
1423                 }
1424         }
1425
1426 }
1427
1428 void User::WriteWallOps(const std::string &text)
1429 {
1430         if (!IS_LOCAL(this))
1431                 return;
1432
1433         std::string wallop("WALLOPS :");
1434         wallop.append(text);
1435
1436         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1437         {
1438                 User* t = *i;
1439                 if (t->IsModeSet('w'))
1440                         this->WriteTo(t,wallop);
1441         }
1442 }
1443
1444 void User::WriteWallOps(const char* text, ...)
1445 {
1446         if (!IS_LOCAL(this))
1447                 return;
1448
1449         char textbuffer[MAXBUF];
1450         va_list argsPtr;
1451
1452         va_start(argsPtr, text);
1453         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1454         va_end(argsPtr);
1455
1456         this->WriteWallOps(std::string(textbuffer));
1457 }
1458
1459 /* return 0 or 1 depending if users u and u2 share one or more common channels
1460  * (used by QUIT, NICK etc which arent channel specific notices)
1461  *
1462  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1463  * the first users channels then the second users channels within the outer loop,
1464  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1465  * all possible iterations). However this new function instead checks against the
1466  * channel's userlist in the inner loop which is a std::map<User*,User*>
1467  * and saves us time as we already know what pointer value we are after.
1468  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1469  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1470  */
1471 bool User::SharesChannelWith(User *other)
1472 {
1473         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1474                 return false;
1475
1476         /* Outer loop */
1477         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1478         {
1479                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1480                  * by replacing it with a map::find which *should* be more efficient
1481                  */
1482                 if (i->first->HasUser(other))
1483                         return true;
1484         }
1485         return false;
1486 }
1487
1488 bool User::ChangeName(const char* gecos)
1489 {
1490         if (!strcmp(gecos, this->fullname))
1491                 return true;
1492
1493         if (IS_LOCAL(this))
1494         {
1495                 int MOD_RESULT = 0;
1496                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1497                 if (MOD_RESULT)
1498                         return false;
1499                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1500         }
1501         strlcpy(this->fullname,gecos,MAXGECOS+1);
1502
1503         return true;
1504 }
1505
1506 bool User::ChangeDisplayedHost(const char* shost)
1507 {
1508         if (!strcmp(shost, this->dhost))
1509                 return true;
1510
1511         if (IS_LOCAL(this))
1512         {
1513                 int MOD_RESULT = 0;
1514                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1515                 if (MOD_RESULT)
1516                         return false;
1517                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1518         }
1519
1520         if (this->ServerInstance->Config->CycleHosts)
1521                 this->WriteCommonExcept("QUIT :Changing hosts");
1522
1523         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1524         strlcpy(this->dhost,shost,64);
1525
1526         this->InvalidateCache();
1527
1528         if (this->ServerInstance->Config->CycleHosts)
1529         {
1530                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1531                 {
1532                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1533                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1534                         if (n.length() > 0)
1535                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1536                 }
1537         }
1538
1539         if (IS_LOCAL(this))
1540                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick,this->dhost);
1541
1542         return true;
1543 }
1544
1545 bool User::ChangeIdent(const char* newident)
1546 {
1547         if (!strcmp(newident, this->ident))
1548                 return true;
1549
1550         if (this->ServerInstance->Config->CycleHosts)
1551                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1552
1553         strlcpy(this->ident, newident, IDENTMAX+1);
1554
1555         this->InvalidateCache();
1556
1557         if (this->ServerInstance->Config->CycleHosts)
1558         {
1559                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1560                 {
1561                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1562                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1563                         if (n.length() > 0)
1564                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1565                 }
1566         }
1567
1568         return true;
1569 }
1570
1571 void User::SendAll(const char* command, const char* text, ...)
1572 {
1573         char textbuffer[MAXBUF];
1574         char formatbuffer[MAXBUF];
1575         va_list argsPtr;
1576
1577         va_start(argsPtr, text);
1578         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1579         va_end(argsPtr);
1580
1581         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1582         std::string fmt = formatbuffer;
1583
1584         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1585         {
1586                 (*i)->Write(fmt);
1587         }
1588 }
1589
1590
1591 std::string User::ChannelList(User* source)
1592 {
1593         std::string list;
1594
1595         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1596         {
1597                 /* If the target is the same as the sender, let them see all their channels.
1598                  * If the channel is NOT private/secret OR the user shares a common channel
1599                  * If the user is an oper, and the <options:operspywhois> option is set.
1600                  */
1601                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1602                 {
1603                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1604                 }
1605         }
1606
1607         return list;
1608 }
1609
1610 void User::SplitChanList(User* dest, const std::string &cl)
1611 {
1612         std::string line;
1613         std::ostringstream prefix;
1614         std::string::size_type start, pos, length;
1615
1616         prefix << this->nick << " " << dest->nick << " :";
1617         line = prefix.str();
1618         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1619
1620         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1621         {
1622                 length = (pos == std::string::npos) ? cl.length() : pos;
1623
1624                 if (line.length() + namelen + length - start > 510)
1625                 {
1626                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1627                         line = prefix.str();
1628                 }
1629
1630                 if(pos == std::string::npos)
1631                 {
1632                         line.append(cl.substr(start, length - start));
1633                         break;
1634                 }
1635                 else
1636                 {
1637                         line.append(cl.substr(start, length - start + 1));
1638                 }
1639         }
1640
1641         if (line.length())
1642         {
1643                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1644         }
1645 }
1646
1647 unsigned int User::GetMaxChans()
1648 {
1649         return this->MaxChans;
1650 }
1651
1652
1653 /*
1654  * Sets a user's connection class.
1655  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1656  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1657  * then their ip will be taken as 'priority' anyway, so for example,
1658  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1659  */
1660 ConnectClass* User::SetClass(const std::string &explicit_name)
1661 {
1662         ConnectClass *found = NULL;
1663
1664         if (!IS_LOCAL(this))
1665                 return NULL;
1666
1667         if (!explicit_name.empty())
1668         {
1669                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1670                 {
1671                         ConnectClass* c = *i;
1672
1673                         if (explicit_name == c->GetName() && !c->GetDisabled())
1674                         {
1675                                 found = c;
1676                         }
1677                 }
1678         }
1679         else
1680         {
1681                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1682                 {
1683                         ConnectClass* c = *i;
1684
1685                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1686                         {
1687                                 if (c->GetPort())
1688                                 {
1689                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1690                                         {
1691                                                 found = c;
1692                                         }
1693                                         else
1694                                                 continue;
1695                                 }
1696                                 else
1697                                 {
1698                                         if (!c->GetDisabled())
1699                                                 found = c;
1700                                 }
1701                         }
1702                 }
1703         }
1704
1705         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1706         if (found)
1707         {
1708                 /* deny change if change will take class over the limit */
1709                 if (found->limit && (found->RefCount + 1 >= found->limit))
1710                 {
1711                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", found->limit);
1712                         return this->MyClass;
1713                 }
1714
1715                 /* should always be valid, but just in case .. */
1716                 if (this->MyClass)
1717                 {
1718                         if (found == this->MyClass) // no point changing this shit :P
1719                                 return this->MyClass;
1720                         this->MyClass->RefCount--;
1721                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1722                 }
1723
1724                 this->MyClass = found;
1725                 this->MyClass->RefCount++;
1726                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1727         }
1728
1729         return this->MyClass;
1730 }
1731
1732 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1733  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1734  * then their ip will be taken as 'priority' anyway, so for example,
1735  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1736  */
1737 ConnectClass* User::GetClass()
1738 {
1739         return this->MyClass;
1740 }
1741
1742 void User::PurgeEmptyChannels()
1743 {
1744         std::vector<Channel*> to_delete;
1745
1746         // firstly decrement the count on each channel
1747         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1748         {
1749                 f->first->RemoveAllPrefixes(this);
1750                 if (f->first->DelUser(this) == 0)
1751                 {
1752                         /* No users left in here, mark it for deletion */
1753                         try
1754                         {
1755                                 to_delete.push_back(f->first);
1756                         }
1757                         catch (...)
1758                         {
1759                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1760                         }
1761                 }
1762         }
1763
1764         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1765         {
1766                 Channel* thischan = *n;
1767                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1768                 if (i2 != ServerInstance->chanlist->end())
1769                 {
1770                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1771                         delete i2->second;
1772                         ServerInstance->chanlist->erase(i2);
1773                         this->chans.erase(*n);
1774                 }
1775         }
1776
1777         this->UnOper();
1778 }
1779
1780 void User::ShowMOTD()
1781 {
1782         if (!ServerInstance->Config->MOTD.size())
1783         {
1784                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick);
1785                 return;
1786         }
1787         this->WriteNumeric(375, "%s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1788
1789         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1790                 this->WriteNumeric(372, "%s :- %s",this->nick,i->c_str());
1791
1792         this->WriteNumeric(376, "%s :End of message of the day.", this->nick);
1793 }
1794
1795 void User::ShowRULES()
1796 {
1797         if (!ServerInstance->Config->RULES.size())
1798         {
1799                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick);
1800                 return;
1801         }
1802
1803         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1804
1805         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1806                 this->WriteNumeric(232, "%s :- %s",this->nick,i->c_str());
1807
1808         this->WriteNumeric(309, "%s :End of RULES command.",this->nick);
1809 }
1810
1811 void User::HandleEvent(EventType et, int errornum)
1812 {
1813         if (this->quitting) // drop everything, user is due to be quit
1814                 return;
1815
1816         /* WARNING: May delete this user! */
1817         int thisfd = this->GetFd();
1818
1819         try
1820         {
1821                 switch (et)
1822                 {
1823                         case EVENT_READ:
1824                                 ServerInstance->ProcessUser(this);
1825                         break;
1826                         case EVENT_WRITE:
1827                                 this->FlushWriteBuf();
1828                         break;
1829                         case EVENT_ERROR:
1830                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1831                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1832                         break;
1833                 }
1834         }
1835         catch (...)
1836         {
1837                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1838         }
1839
1840         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1841         if ((ServerInstance->SE->GetRef(thisfd) == this))
1842         {
1843                 if (!WriteError.empty())
1844                 {
1845                         ServerInstance->Users->QuitUser(this, GetWriteError());
1846                 }
1847         }
1848 }
1849
1850 void User::SetOperQuit(const std::string &oquit)
1851 {
1852         operquitmsg = oquit;
1853 }
1854
1855 const char* User::GetOperQuit()
1856 {
1857         return operquitmsg.c_str();
1858 }
1859
1860 void User::IncreasePenalty(int increase)
1861 {
1862         this->Penalty += increase;
1863 }
1864
1865 void User::DecreasePenalty(int decrease)
1866 {
1867         this->Penalty -= decrease;
1868 }
1869
1870 VisData::VisData()
1871 {
1872 }
1873
1874 VisData::~VisData()
1875 {
1876 }
1877
1878 bool VisData::VisibleTo(User* user)
1879 {
1880         return true;
1881 }
1882