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 static unsigned long* already_sent = NULL;
  25
  26
  27 void InitializeAlreadySent(SocketEngine* SE)
  28 {
  29         already_sent = new unsigned long[SE->GetMaxFds()];
  30 }
  31
  32 /* XXX: Used for speeding up WriteCommon operations */
  33 unsigned long uniq_id = 0;
  34
  35 std::string User::ProcessNoticeMasks(const char *sm)
  36 {
  37         bool adding = true, oldadding = false;
  38         const char *c = sm;
  39         std::string output;
  40
  41         while (c && *c)
  42         {
  43                 switch (*c)
  44                 {
  45                         case '+':
  46                                 adding = true;
  47                         break;
  48                         case '-':
  49                                 adding = false;
  50                         break;
  51                         case '*':
  52                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  53                                 {
  54                                         if (ServerInstance->SNO->IsEnabled(d))
  55                                         {
  56                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  57                                                 {
  58                                                         if ((oldadding != adding) || (!output.length()))
  59                                                                 output += (adding ? '+' : '-');
  60
  61                                                         this->SetNoticeMask(d, adding);
  62
  63                                                         output += d;
  64                                                 }
  65                                         }
  66                                         oldadding = adding;
  67                                 }
  68                         break;
  69                         default:
  70                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  71                                 {
  72                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  73                                         {
  74                                                 if ((oldadding != adding) || (!output.length()))
  75                                                         output += (adding ? '+' : '-');
  76
  77                                                 this->SetNoticeMask(*c, adding);
  78
  79                                                 output += *c;
  80                                         }
  81                                 }
  82                                 else
  83                                         this->WriteNumeric(501, "%s %c :is unknown snomask char to me", this->nick, *c);
  84
  85                                 oldadding = adding;
  86                         break;
  87                 }
  88
  89                 *c++;
  90         }
  91
  92         return output;
  93 }
  94
  95 void User::StartDNSLookup()
  96 {
  97         try
  98         {
  99                 bool cached;
 100                 const char* sip = this->GetIPString();
 101
 102                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
 103                 if (!strncmp(sip, "0::ffff:", 8))
 104                         res_reverse = new UserResolver(this->ServerInstance, this, sip + 8, DNS_QUERY_PTR4, cached);
 105                 else
 106                         res_reverse = new UserResolver(this->ServerInstance, this, sip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 107
 108                 this->ServerInstance->AddResolver(res_reverse, cached);
 109         }
 110         catch (CoreException& e)
 111         {
 112                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 113         }
 114 }
 115
 116 bool User::IsNoticeMaskSet(unsigned char sm)
 117 {
 118         return (snomasks[sm-65]);
 119 }
 120
 121 void User::SetNoticeMask(unsigned char sm, bool value)
 122 {
 123         snomasks[sm-65] = value;
 124 }
 125
 126 const char* User::FormatNoticeMasks()
 127 {
 128         static char data[MAXBUF];
 129         int offset = 0;
 130
 131         for (int n = 0; n < 64; n++)
 132         {
 133                 if (snomasks[n])
 134                         data[offset++] = n+65;
 135         }
 136
 137         data[offset] = 0;
 138         return data;
 139 }
 140
 141
 142
 143 bool User::IsModeSet(unsigned char m)
 144 {
 145         return (modes[m-65]);
 146 }
 147
 148 void User::SetMode(unsigned char m, bool value)
 149 {
 150         modes[m-65] = value;
 151 }
 152
 153 const char* User::FormatModes()
 154 {
 155         static char data[MAXBUF];
 156         int offset = 0;
 157         for (int n = 0; n < 64; n++)
 158         {
 159                 if (modes[n])
 160                         data[offset++] = n+65;
 161         }
 162         data[offset] = 0;
 163         return data;
 164 }
 165
 166 void User::DecrementModes()
 167 {
 168         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 169         for (unsigned char n = 'A'; n <= 'z'; n++)
 170         {
 171                 if (modes[n-65])
 172                 {
 173                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 174                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 175                         if (mh)
 176                         {
 177                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 178                                 mh->ChangeCount(-1);
 179                         }
 180                 }
 181         }
 182 }
 183
 184 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 185 {
 186         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 187         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 188         reset_due = ServerInstance->Time();
 189         age = ServerInstance->Time();
 190         Penalty = 0;
 191         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 192         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 193         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 194         fd = -1;
 195         recvq.clear();
 196         sendq.clear();
 197         WriteError.clear();
 198         res_forward = res_reverse = NULL;
 199         Visibility = NULL;
 200         ip = NULL;
 201         MyClass = NULL;
 202         io = NULL;
 203         AllowedUserModes = NULL;
 204         AllowedChanModes = NULL;
 205         AllowedOperCommands = NULL;
 206         chans.clear();
 207         invites.clear();
 208         memset(modes,0,sizeof(modes));
 209         memset(snomasks,0,sizeof(snomasks));
 210         /* Invalidate cache */
 211         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 212
 213         if (uid.empty())
 214                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 215         else
 216                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 217
 218         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 219
 220         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 221         if (finduuid == Instance->Users->uuidlist->end())
 222                 (*Instance->Users->uuidlist)[uuid] = this;
 223         else
 224                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 225 }
 226
 227 User::~User()
 228 {
 229         /* NULL for remote users :) */
 230         if (this->MyClass)
 231         {
 232                 this->MyClass->RefCount--;
 233                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %lu", this->MyClass->RefCount);
 234         }
 235         if (this->AllowedOperCommands)
 236         {
 237                 delete AllowedOperCommands;
 238                 AllowedOperCommands = NULL;
 239         }
 240
 241         if (this->AllowedUserModes)
 242         {
 243                 delete[] AllowedUserModes;
 244                 AllowedUserModes = NULL;
 245         }
 246
 247         if (this->AllowedChanModes)
 248         {
 249                 delete[] AllowedChanModes;
 250                 AllowedChanModes = NULL;
 251         }
 252
 253         this->InvalidateCache();
 254         this->DecrementModes();
 255
 256         if (ip)
 257         {
 258                 ServerInstance->Users->RemoveCloneCounts(this);
 259
 260                 if (this->GetProtocolFamily() == AF_INET)
 261                 {
 262                         delete (sockaddr_in*)ip;
 263                 }
 264 #ifdef SUPPORT_IP6LINKS
 265                 else
 266                 {
 267                         delete (sockaddr_in6*)ip;
 268                 }
 269 #endif
 270         }
 271
 272         ServerInstance->Users->uuidlist->erase(uuid);
 273 }
 274
 275 char* User::MakeHost()
 276 {
 277         if (this->cached_makehost)
 278                 return this->cached_makehost;
 279
 280         char nhost[MAXBUF];
 281         /* This is much faster than snprintf */
 282         char* t = nhost;
 283         for(char* n = ident; *n; n++)
 284                 *t++ = *n;
 285         *t++ = '@';
 286         for(char* n = host; *n; n++)
 287                 *t++ = *n;
 288         *t = 0;
 289
 290         this->cached_makehost = strdup(nhost);
 291
 292         return this->cached_makehost;
 293 }
 294
 295 char* User::MakeHostIP()
 296 {
 297         if (this->cached_hostip)
 298                 return this->cached_hostip;
 299
 300         char ihost[MAXBUF];
 301         /* This is much faster than snprintf */
 302         char* t = ihost;
 303         for(char* n = ident; *n; n++)
 304                 *t++ = *n;
 305         *t++ = '@';
 306         for(const char* n = this->GetIPString(); *n; n++)
 307                 *t++ = *n;
 308         *t = 0;
 309
 310         this->cached_hostip = strdup(ihost);
 311
 312         return this->cached_hostip;
 313 }
 314
 315 void User::CloseSocket()
 316 {
 317         if (this->fd > -1)
 318         {
 319                 ServerInstance->SE->Shutdown(this, 2);
 320                 ServerInstance->SE->Close(this);
 321         }
 322 }
 323
 324 char* User::GetFullHost()
 325 {
 326         if (this->cached_fullhost)
 327                 return this->cached_fullhost;
 328
 329         char result[MAXBUF];
 330         char* t = result;
 331         for(char* n = nick; *n; n++)
 332                 *t++ = *n;
 333         *t++ = '!';
 334         for(char* n = ident; *n; n++)
 335                 *t++ = *n;
 336         *t++ = '@';
 337         for(char* n = dhost; *n; n++)
 338                 *t++ = *n;
 339         *t = 0;
 340
 341         this->cached_fullhost = strdup(result);
 342
 343         return this->cached_fullhost;
 344 }
 345
 346 char* User::MakeWildHost()
 347 {
 348         static char nresult[MAXBUF];
 349         char* t = nresult;
 350         *t++ = '*';     *t++ = '!';
 351         *t++ = '*';     *t++ = '@';
 352         for(char* n = dhost; *n; n++)
 353                 *t++ = *n;
 354         *t = 0;
 355         return nresult;
 356 }
 357
 358 int User::ReadData(void* buffer, size_t size)
 359 {
 360         if (IS_LOCAL(this))
 361         {
 362 #ifndef WIN32
 363                 return read(this->fd, buffer, size);
 364 #else
 365                 return recv(this->fd, (char*)buffer, size, 0);
 366 #endif
 367         }
 368         else
 369                 return 0;
 370 }
 371
 372
 373 char* User::GetFullRealHost()
 374 {
 375         if (this->cached_fullrealhost)
 376                 return this->cached_fullrealhost;
 377
 378         char fresult[MAXBUF];
 379         char* t = fresult;
 380         for(char* n = nick; *n; n++)
 381                 *t++ = *n;
 382         *t++ = '!';
 383         for(char* n = ident; *n; n++)
 384                 *t++ = *n;
 385         *t++ = '@';
 386         for(char* n = host; *n; n++)
 387                 *t++ = *n;
 388         *t = 0;
 389
 390         this->cached_fullrealhost = strdup(fresult);
 391
 392         return this->cached_fullrealhost;
 393 }
 394
 395 bool User::IsInvited(const irc::string &channel)
 396 {
 397         time_t now = time(NULL);
 398         InvitedList::iterator safei;
 399         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 400         {
 401                 if (channel == i->first)
 402                 {
 403                         if (i->second != 0 && now > i->second)
 404                         {
 405                                 /* Expired invite, remove it. */
 406                                 safei = i;
 407                                 --i;
 408                                 invites.erase(safei);
 409                                 continue;
 410                         }
 411                         return true;
 412                 }
 413         }
 414         return false;
 415 }
 416
 417 InvitedList* User::GetInviteList()
 418 {
 419         time_t now = time(NULL);
 420         /* Weed out expired invites here. */
 421         InvitedList::iterator safei;
 422         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 423         {
 424                 if (i->second != 0 && now > i->second)
 425                 {
 426                         /* Expired invite, remove it. */
 427                         safei = i;
 428                         --i;
 429                         invites.erase(safei);
 430                 }
 431         }
 432         return &invites;
 433 }
 434
 435 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 436 {
 437         time_t now = time(NULL);
 438         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 439         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 440         {
 441                 if (channel == i->first)
 442                 {
 443                         if (i->second != 0 && invtimeout > i->second)
 444                         {
 445                                 i->second = invtimeout;
 446                         }
 447                 }
 448         }
 449         invites.push_back(std::make_pair(channel, invtimeout));
 450 }
 451
 452 void User::RemoveInvite(const irc::string &channel)
 453 {
 454         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 455         {
 456                 if (channel == i->first)
 457                 {
 458                         invites.erase(i);
 459                         return;
 460                 }
 461         }
 462 }
 463
 464 bool User::HasModePermission(unsigned char mode, ModeType type)
 465 {
 466         if (!IS_LOCAL(this))
 467                 return true;
 468
 469         if (!IS_OPER(this))
 470                 return false;
 471
 472         if (!AllowedUserModes || !AllowedChanModes)
 473                 return false;
 474
 475         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 476
 477 }
 478
 479 bool User::HasPermission(const std::string &command)
 480 {
 481         /*
 482          * users on remote servers can completely bypass all permissions based checks.
 483          * This prevents desyncs when one server has different type/class tags to another.
 484          * That having been said, this does open things up to the possibility of source changes
 485          * allowing remote kills, etc - but if they have access to the src, they most likely have
 486          * access to the conf - so it's an end to a means either way.
 487          */
 488         if (!IS_LOCAL(this))
 489                 return true;
 490
 491         // are they even an oper at all?
 492         if (!IS_OPER(this))
 493         {
 494                 return false;
 495         }
 496
 497         if (!AllowedOperCommands)
 498                 return false;
 499
 500         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 501                 return true;
 502         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 503                 return true;
 504
 505         return false;
 506 }
 507
 508 /** NOTE: We cannot pass a const reference to this method.
 509  * The string is changed by the workings of the method,
 510  * so that if we pass const ref, we end up copying it to
 511  * something we can change anyway. Makes sense to just let
 512  * the compiler do that copy for us.
 513  */
 514 bool User::AddBuffer(std::string a)
 515 {
 516         try
 517         {
 518                 std::string::size_type i = a.rfind('\r');
 519
 520                 while (i != std::string::npos)
 521                 {
 522                         a.erase(i, 1);
 523                         i = a.rfind('\r');
 524                 }
 525
 526                 if (a.length())
 527                         recvq.append(a);
 528
 529                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 530                 {
 531                         this->SetWriteError("RecvQ exceeded");
 532                         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());
 533                         return false;
 534                 }
 535
 536                 return true;
 537         }
 538
 539         catch (...)
 540         {
 541                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::AddBuffer()");
 542                 return false;
 543         }
 544 }
 545
 546 bool User::BufferIsReady()
 547 {
 548         return (recvq.find('\n') != std::string::npos);
 549 }
 550
 551 void User::ClearBuffer()
 552 {
 553         recvq.clear();
 554 }
 555
 556 std::string User::GetBuffer()
 557 {
 558         try
 559         {
 560                 if (recvq.empty())
 561                         return "";
 562
 563                 /* Strip any leading \r or \n off the string.
 564                  * Usually there are only one or two of these,
 565                  * so its is computationally cheap to do.
 566                  */
 567                 std::string::iterator t = recvq.begin();
 568                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 569                 {
 570                         recvq.erase(t);
 571                         t = recvq.begin();
 572                 }
 573
 574                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 575                 {
 576                         /* Find the first complete line, return it as the
 577                          * result, and leave the recvq as whats left
 578                          */
 579                         if (*x == '\n')
 580                         {
 581                                 std::string ret = std::string(recvq.begin(), x);
 582                                 recvq.erase(recvq.begin(), x + 1);
 583                                 return ret;
 584                         }
 585                 }
 586                 return "";
 587         }
 588
 589         catch (...)
 590         {
 591                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 592                 return "";
 593         }
 594 }
 595
 596 void User::AddWriteBuf(const std::string &data)
 597 {
 598         if (*this->GetWriteError())
 599                 return;
 600
 601         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 602         {
 603                 /*
 604                  * Fix by brain - Set the error text BEFORE calling, because
 605                  * if we dont it'll recursively  call here over and over again trying
 606                  * to repeatedly add the text to the sendq!
 607                  */
 608                 this->SetWriteError("SendQ exceeded");
 609                 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());
 610                 return;
 611         }
 612
 613         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 614                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 615         else
 616                 sendq.append(data);
 617 }
 618
 619 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 620 void User::FlushWriteBuf()
 621 {
 622         try
 623         {
 624                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 625                 {
 626                         sendq.clear();
 627                 }
 628                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 629                 {
 630                         int old_sendq_length = sendq.length();
 631                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 632
 633                         if (n_sent == -1)
 634                         {
 635                                 if (errno == EAGAIN)
 636                                 {
 637                                         /* The socket buffer is full. This isnt fatal,
 638                                          * try again later.
 639                                          */
 640                                         this->ServerInstance->SE->WantWrite(this);
 641                                 }
 642                                 else
 643                                 {
 644                                         /* Fatal error, set write error and bail
 645                                          */
 646                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 647                                         return;
 648                                 }
 649                         }
 650                         else
 651                         {
 652                                 /* advance the queue */
 653                                 if (n_sent)
 654                                         this->sendq = this->sendq.substr(n_sent);
 655                                 /* update the user's stats counters */
 656                                 this->bytes_out += n_sent;
 657                                 this->cmds_out++;
 658                                 if (n_sent != old_sendq_length)
 659                                         this->ServerInstance->SE->WantWrite(this);
 660                         }
 661                 }
 662         }
 663
 664         catch (...)
 665         {
 666                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 667         }
 668
 669         if (this->sendq.empty())
 670         {
 671                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 672         }
 673 }
 674
 675 void User::SetWriteError(const std::string &error)
 676 {
 677         // don't try to set the error twice, its already set take the first string.
 678         if (this->WriteError.empty())
 679                 this->WriteError = error;
 680 }
 681
 682 const char* User::GetWriteError()
 683 {
 684         return this->WriteError.c_str();
 685 }
 686
 687 void User::Oper(const std::string &opertype, const std::string &opername)
 688 {
 689         char* mycmd;
 690         char* savept;
 691         char* savept2;
 692
 693         try
 694         {
 695                 this->modes[UM_OPERATOR] = 1;
 696                 this->WriteServ("MODE %s :+o", this->nick);
 697                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 698                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 699                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 700                 ServerInstance->Users->all_opers.push_back(this);
 701
 702                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 703                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 704                 {
 705
 706                         if (AllowedOperCommands)
 707                                 AllowedOperCommands->clear();
 708                         else
 709                                 AllowedOperCommands = new std::map<std::string, bool>;
 710
 711                         if (!AllowedChanModes)
 712                                 AllowedChanModes = new bool[64];
 713
 714                         if (!AllowedUserModes)
 715                                 AllowedUserModes = new bool[64];
 716
 717                         memset(AllowedUserModes, 0, 64);
 718                         memset(AllowedChanModes, 0, 64);
 719
 720                         char* Classes = strdup(iter_opertype->second);
 721                         char* myclass = strtok_r(Classes," ",&savept);
 722                         while (myclass)
 723                         {
 724                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 725                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 726                                 {
 727                                         char* CommandList = strdup(iter_operclass->second.commandlist);
 728                                         mycmd = strtok_r(CommandList," ",&savept2);
 729                                         while (mycmd)
 730                                         {
 731                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 732                                                 mycmd = strtok_r(NULL," ",&savept2);
 733                                         }
 734                                         free(CommandList);
 735                                         this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 736                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 737                                         {
 738                                                 if (*c == '*')
 739                                                 {
 740                                                         memset(this->AllowedUserModes, (int)(true), 64);
 741                                                 }
 742                                                 else
 743                                                 {
 744                                                         this->AllowedUserModes[*c - 'A'] = true;
 745                                                 }
 746                                         }
 747                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 748                                         {
 749                                                 if (*c == '*')
 750                                                 {
 751                                                         memset(this->AllowedChanModes, (int)(true), 64);
 752                                                 }
 753                                                 else
 754                                                 {
 755                                                         this->AllowedChanModes[*c - 'A'] = true;
 756                                                 }
 757                                         }
 758                                 }
 759                                 myclass = strtok_r(NULL," ",&savept);
 760                         }
 761                         free(Classes);
 762                 }
 763
 764                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 765         }
 766
 767         catch (...)
 768         {
 769                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 770         }
 771 }
 772
 773 void User::UnOper()
 774 {
 775         if (IS_OPER(this))
 776         {
 777                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 778                 std::string moderemove("-");
 779
 780                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 781                 {
 782                         if (letter != 'o')
 783                         {
 784                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 785                                 if (mh && mh->NeedsOper())
 786                                         moderemove += letter;
 787                         }
 788                 }
 789
 790                 const char* parameters[] = { this->nick, moderemove.c_str() };
 791                 ServerInstance->Parser->CallHandler("MODE", parameters, 2, this);
 792
 793                 /* unset their oper type (what IS_OPER checks), and remove +o */
 794                 *this->oper = 0;
 795                 this->modes[UM_OPERATOR] = 0;
 796
 797                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 798                 ServerInstance->Users->all_opers.remove(this);
 799
 800                 if (AllowedOperCommands)
 801                 {
 802                         delete AllowedOperCommands;
 803                         AllowedOperCommands = NULL;
 804                 }
 805                 if (AllowedUserModes)
 806                 {
 807                         delete[] AllowedUserModes;
 808                         AllowedUserModes = NULL;
 809                 }
 810                 if (AllowedChanModes)
 811                 {
 812                         delete[] AllowedChanModes;
 813                         AllowedChanModes = NULL;
 814                 }
 815
 816         }
 817 }
 818
 819 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 820 {
 821         Instance->Logs->Log("USERS", DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str());
 822         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str());
 823         user->quietquit = false;
 824         user->quitmsg = quitreason;
 825
 826         if (!*operreason)
 827                 user->operquitmsg = quitreason;
 828         else
 829                 user->operquitmsg = operreason;
 830
 831         Instance->GlobalCulls.AddItem(user);
 832 }
 833
 834 /* adds or updates an entry in the whowas list */
 835 void User::AddToWhoWas()
 836 {
 837         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 838         if (whowas_command)
 839         {
 840                 std::deque<classbase*> params;
 841                 params.push_back(this);
 842                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 843         }
 844 }
 845
 846 /*
 847  * Check class restrictions
 848  */
 849 void User::CheckClass()
 850 {
 851         ConnectClass* a = this->MyClass;
 852
 853         if ((!a) || (a->GetType() == CC_DENY))
 854         {
 855                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 856                 return;
 857         }
 858         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 859         {
 860                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 861                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 862                 return;
 863         }
 864         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 865         {
 866                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 867                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 868                 return;
 869         }
 870
 871         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 872         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 873         this->MaxChans = a->GetMaxChans();
 874 }
 875
 876 void User::FullConnect()
 877 {
 878         ServerInstance->stats->statsConnects++;
 879         this->idle_lastmsg = ServerInstance->Time();
 880
 881         /*
 882          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 883          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 884          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 885          * Don't remove this! -- w00t
 886          */
 887         this->SetClass();
 888
 889         /* Check the password, if one is required by the user's connect class.
 890          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 891          */
 892         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 893         {
 894                 User::QuitUser(ServerInstance, this, "Invalid password");
 895                 return;
 896         }
 897
 898         if (!this->exempt)
 899         {
 900                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 901
 902                 if (r)
 903                 {
 904                         r->Apply(this);
 905                         return;
 906                 }
 907
 908                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 909
 910                 if (n)
 911                 {
 912                         n->Apply(this);
 913                         return;
 914                 }
 915         }
 916
 917         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 918         this->WriteNumeric(001, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 919         this->WriteNumeric(002, "%s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 920         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 921         this->WriteNumeric(004, "%s %s %s %s %s %s", this->nick, ServerInstance->Config->ServerName, VERSION, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 922
 923         ServerInstance->Config->Send005(this);
 924
 925         this->WriteNumeric(42, "%s %s :your unique ID", this->nick, this->uuid);
 926
 927
 928         this->ShowMOTD();
 929
 930         /* Now registered */
 931         if (ServerInstance->Users->unregistered_count)
 932                 ServerInstance->Users->unregistered_count--;
 933
 934         /* Trigger LUSERS output, give modules a chance too */
 935         int MOD_RESULT = 0;
 936         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 937         if (!MOD_RESULT)
 938                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 939
 940         /*
 941          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 942          * for a user that doesn't exist yet.
 943          */
 944         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 945
 946         this->registered = REG_ALL;
 947
 948         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 949
 950         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);
 951         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 952         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 953 }
 954
 955 /** User::UpdateNick()
 956  * re-allocates a nick in the user_hash after they change nicknames,
 957  * returns a pointer to the new user as it may have moved
 958  */
 959 User* User::UpdateNickHash(const char* New)
 960 {
 961         //user_hash::iterator newnick;
 962         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 963
 964         if (!strcasecmp(this->nick,New))
 965                 return oldnick->second;
 966
 967         if (oldnick == ServerInstance->Users->clientlist->end())
 968                 return NULL; /* doesnt exist */
 969
 970         User* olduser = oldnick->second;
 971         (*(ServerInstance->Users->clientlist))[New] = olduser;
 972         ServerInstance->Users->clientlist->erase(oldnick);
 973         return olduser;
 974 }
 975
 976 void User::InvalidateCache()
 977 {
 978         /* Invalidate cache */
 979         if (cached_fullhost)
 980                 free(cached_fullhost);
 981         if (cached_hostip)
 982                 free(cached_hostip);
 983         if (cached_makehost)
 984                 free(cached_makehost);
 985         if (cached_fullrealhost)
 986                 free(cached_fullrealhost);
 987         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 988 }
 989
 990 bool User::ForceNickChange(const char* newnick)
 991 {
 992         /*
 993          * XXX this makes no sense..
 994          * why do we do nothing for change on users not REG_ALL?
 995          * why do we trigger events twice for everyone previously (and just them now)
 996          * i think the first if () needs removing totally, or? -- w00t
 997          */
 998         if (this->registered != REG_ALL)
 999         {
1000                 int MOD_RESULT = 0;
1001
1002                 this->InvalidateCache();
1003
1004                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1005
1006                 if (MOD_RESULT)
1007                 {
1008                         ServerInstance->stats->statsCollisions++;
1009                         return false;
1010                 }
1011
1012                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
1013                 {
1014                         ServerInstance->stats->statsCollisions++;
1015                         return false;
1016                 }
1017         }
1018         else
1019         {
1020                 std::deque<classbase*> dummy;
1021                 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1022                 if (nickhandler) // wtfbbq, when would this not be here
1023                 {
1024                         nickhandler->HandleInternal(1, dummy);
1025                         bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
1026                         nickhandler->HandleInternal(0, dummy);
1027                         return result;
1028                 }
1029         }
1030
1031         // Unreachable.
1032         return false;
1033 }
1034
1035 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1036 {
1037         this->cachedip = "";
1038
1039         switch (protocol_family)
1040         {
1041 #ifdef SUPPORT_IP6LINKS
1042                 case AF_INET6:
1043                 {
1044                         sockaddr_in6* sin = new sockaddr_in6;
1045                         sin->sin6_family = AF_INET6;
1046                         sin->sin6_port = port;
1047                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1048                         this->ip = (sockaddr*)sin;
1049                 }
1050                 break;
1051 #endif
1052                 case AF_INET:
1053                 {
1054                         sockaddr_in* sin = new sockaddr_in;
1055                         sin->sin_family = AF_INET;
1056                         sin->sin_port = port;
1057                         inet_pton(AF_INET, sip, &sin->sin_addr);
1058                         this->ip = (sockaddr*)sin;
1059                 }
1060                 break;
1061                 default:
1062                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1063                 break;
1064         }
1065 }
1066
1067 int User::GetPort()
1068 {
1069         if (this->ip == NULL)
1070                 return 0;
1071
1072         switch (this->GetProtocolFamily())
1073         {
1074 #ifdef SUPPORT_IP6LINKS
1075                 case AF_INET6:
1076                 {
1077                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1078                         return sin->sin6_port;
1079                 }
1080                 break;
1081 #endif
1082                 case AF_INET:
1083                 {
1084                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1085                         return sin->sin_port;
1086                 }
1087                 break;
1088                 default:
1089                 break;
1090         }
1091         return 0;
1092 }
1093
1094 int User::GetProtocolFamily()
1095 {
1096         if (this->ip == NULL)
1097                 return 0;
1098
1099         sockaddr_in* sin = (sockaddr_in*)this->ip;
1100         return sin->sin_family;
1101 }
1102
1103 /*
1104  * XXX the duplication here is horrid..
1105  * do we really need two methods doing essentially the same thing?
1106  */
1107 const char* User::GetIPString()
1108 {
1109         static char buf[1024];
1110
1111         if (this->ip == NULL)
1112                 return "";
1113
1114         if (!this->cachedip.empty())
1115                 return this->cachedip.c_str();
1116
1117         switch (this->GetProtocolFamily())
1118         {
1119 #ifdef SUPPORT_IP6LINKS
1120                 case AF_INET6:
1121                 {
1122                         static char temp[1024];
1123
1124                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1125                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1126                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1127                         if (*buf == ':')
1128                         {
1129                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1130                                 *temp = '0';
1131                                 this->cachedip = temp;
1132                                 return temp;
1133                         }
1134
1135                         this->cachedip = buf;
1136                         return buf;
1137                 }
1138                 break;
1139 #endif
1140                 case AF_INET:
1141                 {
1142                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1143                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1144                         this->cachedip = buf;
1145                         return buf;
1146                 }
1147                 break;
1148                 default:
1149                 break;
1150         }
1151
1152         // Unreachable, probably
1153         return "";
1154 }
1155
1156 /** NOTE: We cannot pass a const reference to this method.
1157  * The string is changed by the workings of the method,
1158  * so that if we pass const ref, we end up copying it to
1159  * something we can change anyway. Makes sense to just let
1160  * the compiler do that copy for us.
1161  */
1162 void User::Write(std::string text)
1163 {
1164         if (!ServerInstance->SE->BoundsCheckFd(this))
1165                 return;
1166
1167         try
1168         {
1169                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1170                 text.append("\r\n");
1171         }
1172         catch (...)
1173         {
1174                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1175                 return;
1176         }
1177
1178         if (this->io)
1179         {
1180                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1181                  * implement their own buffering mechanisms
1182                  */
1183                 try
1184                 {
1185                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1186                 }
1187                 catch (CoreException& modexcept)
1188                 {
1189                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1190                 }
1191         }
1192         else
1193         {
1194                 this->AddWriteBuf(text);
1195         }
1196         ServerInstance->stats->statsSent += text.length();
1197         this->ServerInstance->SE->WantWrite(this);
1198 }
1199
1200 /** Write()
1201  */
1202 void User::Write(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->Write(std::string(textbuffer));
1212 }
1213
1214 void User::WriteServ(const std::string& text)
1215 {
1216         char textbuffer[MAXBUF];
1217
1218         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1219         this->Write(std::string(textbuffer));
1220 }
1221
1222 /** WriteServ()
1223  *  Same as Write(), except `text' is prefixed with `:server.name '.
1224  */
1225 void User::WriteServ(const char* text, ...)
1226 {
1227         va_list argsPtr;
1228         char textbuffer[MAXBUF];
1229
1230         va_start(argsPtr, text);
1231         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1232         va_end(argsPtr);
1233
1234         this->WriteServ(std::string(textbuffer));
1235 }
1236
1237
1238 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1239 {
1240         va_list argsPtr;
1241         char textbuffer[MAXBUF];
1242
1243         va_start(argsPtr, text);
1244         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1245         va_end(argsPtr);
1246
1247         this->WriteNumeric(numeric, std::string(textbuffer));
1248 }
1249
1250 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1251 {
1252         char textbuffer[MAXBUF];
1253         int MOD_RESULT = 0;
1254
1255         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1256
1257         if (MOD_RESULT)
1258                 return;
1259
1260         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1261         this->Write(std::string(textbuffer));
1262 }
1263
1264 void User::WriteFrom(User *user, const std::string &text)
1265 {
1266         char tb[MAXBUF];
1267
1268         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1269
1270         this->Write(std::string(tb));
1271 }
1272
1273
1274 /* write text from an originating user to originating user */
1275
1276 void User::WriteFrom(User *user, const char* text, ...)
1277 {
1278         va_list argsPtr;
1279         char textbuffer[MAXBUF];
1280
1281         va_start(argsPtr, text);
1282         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1283         va_end(argsPtr);
1284
1285         this->WriteFrom(user, std::string(textbuffer));
1286 }
1287
1288
1289 /* write text to an destination user from a source user (e.g. user privmsg) */
1290
1291 void User::WriteTo(User *dest, const char *data, ...)
1292 {
1293         char textbuffer[MAXBUF];
1294         va_list argsPtr;
1295
1296         va_start(argsPtr, data);
1297         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1298         va_end(argsPtr);
1299
1300         this->WriteTo(dest, std::string(textbuffer));
1301 }
1302
1303 void User::WriteTo(User *dest, const std::string &data)
1304 {
1305         dest->WriteFrom(this, data);
1306 }
1307
1308
1309 void User::WriteCommon(const char* text, ...)
1310 {
1311         char textbuffer[MAXBUF];
1312         va_list argsPtr;
1313
1314         if (this->registered != REG_ALL)
1315                 return;
1316
1317         va_start(argsPtr, text);
1318         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1319         va_end(argsPtr);
1320
1321         this->WriteCommon(std::string(textbuffer));
1322 }
1323
1324 void User::WriteCommon(const std::string &text)
1325 {
1326         bool sent_to_at_least_one = false;
1327         char tb[MAXBUF];
1328
1329         if (this->registered != REG_ALL)
1330                 return;
1331
1332         uniq_id++;
1333
1334         if (!already_sent)
1335                 InitializeAlreadySent(ServerInstance->SE);
1336
1337         /* We dont want to be doing this n times, just once */
1338         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1339         std::string out = tb;
1340
1341         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1342         {
1343                 CUList* ulist = v->first->GetUsers();
1344                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1345                 {
1346                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1347                         {
1348                                 already_sent[i->first->fd] = uniq_id;
1349                                 i->first->Write(out);
1350                                 sent_to_at_least_one = true;
1351                         }
1352                 }
1353         }
1354
1355         /*
1356          * if the user was not in any channels, no users will receive the text. Make sure the user
1357          * receives their OWN message for WriteCommon
1358          */
1359         if (!sent_to_at_least_one)
1360         {
1361                 this->Write(std::string(tb));
1362         }
1363 }
1364
1365
1366 /* write a formatted string to all users who share at least one common
1367  * channel, NOT including the source user e.g. for use in QUIT
1368  */
1369
1370 void User::WriteCommonExcept(const char* text, ...)
1371 {
1372         char textbuffer[MAXBUF];
1373         va_list argsPtr;
1374
1375         va_start(argsPtr, text);
1376         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1377         va_end(argsPtr);
1378
1379         this->WriteCommonExcept(std::string(textbuffer));
1380 }
1381
1382 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1383 {
1384         char tb1[MAXBUF];
1385         char tb2[MAXBUF];
1386
1387         if (this->registered != REG_ALL)
1388                 return;
1389
1390         uniq_id++;
1391
1392         if (!already_sent)
1393                 InitializeAlreadySent(ServerInstance->SE);
1394
1395         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1396         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1397         std::string out1 = tb1;
1398         std::string out2 = tb2;
1399
1400         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1401         {
1402                 CUList *ulist = v->first->GetUsers();
1403                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1404                 {
1405                         if (this != i->first)
1406                         {
1407                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1408                                 {
1409                                         already_sent[i->first->fd] = uniq_id;
1410                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1411                                 }
1412                         }
1413                 }
1414         }
1415 }
1416
1417 void User::WriteCommonExcept(const std::string &text)
1418 {
1419         char tb1[MAXBUF];
1420         std::string out1;
1421
1422         if (this->registered != REG_ALL)
1423                 return;
1424
1425         uniq_id++;
1426
1427         if (!already_sent)
1428                 InitializeAlreadySent(ServerInstance->SE);
1429
1430         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1431         out1 = tb1;
1432
1433         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1434         {
1435                 CUList *ulist = v->first->GetUsers();
1436                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1437                 {
1438                         if (this != i->first)
1439                         {
1440                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1441                                 {
1442                                         already_sent[i->first->fd] = uniq_id;
1443                                         i->first->Write(out1);
1444                                 }
1445                         }
1446                 }
1447         }
1448
1449 }
1450
1451 void User::WriteWallOps(const std::string &text)
1452 {
1453         if (!IS_OPER(this) && IS_LOCAL(this))
1454                 return;
1455
1456         std::string wallop("WALLOPS :");
1457         wallop.append(text);
1458
1459         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1460         {
1461                 User* t = *i;
1462                 if (t->IsModeSet('w'))
1463                         this->WriteTo(t,wallop);
1464         }
1465 }
1466
1467 void User::WriteWallOps(const char* text, ...)
1468 {
1469         char textbuffer[MAXBUF];
1470         va_list argsPtr;
1471
1472         va_start(argsPtr, text);
1473         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1474         va_end(argsPtr);
1475
1476         this->WriteWallOps(std::string(textbuffer));
1477 }
1478
1479 /* return 0 or 1 depending if users u and u2 share one or more common channels
1480  * (used by QUIT, NICK etc which arent channel specific notices)
1481  *
1482  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1483  * the first users channels then the second users channels within the outer loop,
1484  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1485  * all possible iterations). However this new function instead checks against the
1486  * channel's userlist in the inner loop which is a std::map<User*,User*>
1487  * and saves us time as we already know what pointer value we are after.
1488  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1489  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1490  */
1491 bool User::SharesChannelWith(User *other)
1492 {
1493         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1494                 return false;
1495
1496         /* Outer loop */
1497         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1498         {
1499                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1500                  * by replacing it with a map::find which *should* be more efficient
1501                  */
1502                 if (i->first->HasUser(other))
1503                         return true;
1504         }
1505         return false;
1506 }
1507
1508 bool User::ChangeName(const char* gecos)
1509 {
1510         if (!strcmp(gecos, this->fullname))
1511                 return true;
1512
1513         if (IS_LOCAL(this))
1514         {
1515                 int MOD_RESULT = 0;
1516                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1517                 if (MOD_RESULT)
1518                         return false;
1519                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1520         }
1521         strlcpy(this->fullname,gecos,MAXGECOS+1);
1522
1523         return true;
1524 }
1525
1526 bool User::ChangeDisplayedHost(const char* shost)
1527 {
1528         if (!strcmp(shost, this->dhost))
1529                 return true;
1530
1531         if (IS_LOCAL(this))
1532         {
1533                 int MOD_RESULT = 0;
1534                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1535                 if (MOD_RESULT)
1536                         return false;
1537                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1538         }
1539
1540         if (this->ServerInstance->Config->CycleHosts)
1541                 this->WriteCommonExcept("QUIT :Changing hosts");
1542
1543         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1544         strlcpy(this->dhost,shost,64);
1545
1546         this->InvalidateCache();
1547
1548         if (this->ServerInstance->Config->CycleHosts)
1549         {
1550                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1551                 {
1552                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1553                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1554                         if (n.length() > 0)
1555                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1556                 }
1557         }
1558
1559         if (IS_LOCAL(this))
1560                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick,this->dhost);
1561
1562         return true;
1563 }
1564
1565 bool User::ChangeIdent(const char* newident)
1566 {
1567         if (!strcmp(newident, this->ident))
1568                 return true;
1569
1570         if (this->ServerInstance->Config->CycleHosts)
1571                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1572
1573         strlcpy(this->ident, newident, IDENTMAX+1);
1574
1575         this->InvalidateCache();
1576
1577         if (this->ServerInstance->Config->CycleHosts)
1578         {
1579                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1580                 {
1581                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1582                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1583                         if (n.length() > 0)
1584                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1585                 }
1586         }
1587
1588         return true;
1589 }
1590
1591 void User::SendAll(const char* command, const char* text, ...)
1592 {
1593         char textbuffer[MAXBUF];
1594         char formatbuffer[MAXBUF];
1595         va_list argsPtr;
1596
1597         va_start(argsPtr, text);
1598         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1599         va_end(argsPtr);
1600
1601         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1602         std::string fmt = formatbuffer;
1603
1604         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1605         {
1606                 (*i)->Write(fmt);
1607         }
1608 }
1609
1610
1611 std::string User::ChannelList(User* source)
1612 {
1613         std::string list;
1614
1615         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1616         {
1617                 /* If the target is the same as the sender, let them see all their channels.
1618                  * If the channel is NOT private/secret OR the user shares a common channel
1619                  * If the user is an oper, and the <options:operspywhois> option is set.
1620                  */
1621                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1622                 {
1623                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1624                 }
1625         }
1626
1627         return list;
1628 }
1629
1630 void User::SplitChanList(User* dest, const std::string &cl)
1631 {
1632         std::string line;
1633         std::ostringstream prefix;
1634         std::string::size_type start, pos, length;
1635
1636         prefix << this->nick << " " << dest->nick << " :";
1637         line = prefix.str();
1638         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1639
1640         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1641         {
1642                 length = (pos == std::string::npos) ? cl.length() : pos;
1643
1644                 if (line.length() + namelen + length - start > 510)
1645                 {
1646                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1647                         line = prefix.str();
1648                 }
1649
1650                 if(pos == std::string::npos)
1651                 {
1652                         line.append(cl.substr(start, length - start));
1653                         break;
1654                 }
1655                 else
1656                 {
1657                         line.append(cl.substr(start, length - start + 1));
1658                 }
1659         }
1660
1661         if (line.length())
1662         {
1663                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1664         }
1665 }
1666
1667 unsigned int User::GetMaxChans()
1668 {
1669         return this->MaxChans;
1670 }
1671
1672
1673 /*
1674  * Sets a user's connection class.
1675  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1676  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1677  * then their ip will be taken as 'priority' anyway, so for example,
1678  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1679  */
1680 ConnectClass* User::SetClass(const std::string &explicit_name)
1681 {
1682         ConnectClass *found = NULL;
1683
1684         if (!IS_LOCAL(this))
1685                 return NULL;
1686
1687         if (!explicit_name.empty())
1688         {
1689                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1690                 {
1691                         ConnectClass* c = *i;
1692
1693                         if (explicit_name == c->GetName() && !c->GetDisabled())
1694                         {
1695                                 found = c;
1696                         }
1697                 }
1698         }
1699         else
1700         {
1701                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1702                 {
1703                         ConnectClass* c = *i;
1704
1705                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1706                         {
1707                                 if (c->GetPort())
1708                                 {
1709                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1710                                         {
1711                                                 found = c;
1712                                         }
1713                                         else
1714                                                 continue;
1715                                 }
1716                                 else
1717                                 {
1718                                         if (!c->GetDisabled())
1719                                                 found = c;
1720                                 }
1721                         }
1722                 }
1723         }
1724
1725         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1726         if (found)
1727         {
1728                 /* deny change if change will take class over the limit */
1729                 if (found->limit && (found->RefCount + 1 >= found->limit))
1730                 {
1731                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", found->limit);
1732                         return this->MyClass;
1733                 }
1734
1735                 /* should always be valid, but just in case .. */
1736                 if (this->MyClass)
1737                 {
1738                         if (found == this->MyClass) // no point changing this shit :P
1739                                 return this->MyClass;
1740                         this->MyClass->RefCount--;
1741                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1742                 }
1743
1744                 this->MyClass = found;
1745                 this->MyClass->RefCount++;
1746                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1747         }
1748
1749         return this->MyClass;
1750 }
1751
1752 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1753  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1754  * then their ip will be taken as 'priority' anyway, so for example,
1755  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1756  */
1757 ConnectClass* User::GetClass()
1758 {
1759         return this->MyClass;
1760 }
1761
1762 void User::PurgeEmptyChannels()
1763 {
1764         std::vector<Channel*> to_delete;
1765
1766         // firstly decrement the count on each channel
1767         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1768         {
1769                 f->first->RemoveAllPrefixes(this);
1770                 if (f->first->DelUser(this) == 0)
1771                 {
1772                         /* No users left in here, mark it for deletion */
1773                         try
1774                         {
1775                                 to_delete.push_back(f->first);
1776                         }
1777                         catch (...)
1778                         {
1779                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1780                         }
1781                 }
1782         }
1783
1784         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1785         {
1786                 Channel* thischan = *n;
1787                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1788                 if (i2 != ServerInstance->chanlist->end())
1789                 {
1790                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1791                         delete i2->second;
1792                         ServerInstance->chanlist->erase(i2);
1793                         this->chans.erase(*n);
1794                 }
1795         }
1796
1797         this->UnOper();
1798 }
1799
1800 void User::ShowMOTD()
1801 {
1802         if (!ServerInstance->Config->MOTD.size())
1803         {
1804                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick);
1805                 return;
1806         }
1807         this->WriteNumeric(375, "%s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1808
1809         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1810                 this->WriteNumeric(372, "%s :- %s",this->nick,i->c_str());
1811
1812         this->WriteNumeric(376, "%s :End of message of the day.", this->nick);
1813 }
1814
1815 void User::ShowRULES()
1816 {
1817         if (!ServerInstance->Config->RULES.size())
1818         {
1819                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick);
1820                 return;
1821         }
1822
1823         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1824
1825         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1826                 this->WriteNumeric(232, "%s :- %s",this->nick,i->c_str());
1827
1828         this->WriteNumeric(309, "%s :End of RULES command.",this->nick);
1829 }
1830
1831 void User::HandleEvent(EventType et, int errornum)
1832 {
1833         if (this->quitting) // drop everything, user is due to be quit
1834                 return;
1835
1836         /* WARNING: May delete this user! */
1837         int thisfd = this->GetFd();
1838
1839         try
1840         {
1841                 switch (et)
1842                 {
1843                         case EVENT_READ:
1844                                 ServerInstance->ProcessUser(this);
1845                         break;
1846                         case EVENT_WRITE:
1847                                 this->FlushWriteBuf();
1848                         break;
1849                         case EVENT_ERROR:
1850                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1851                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1852                         break;
1853                 }
1854         }
1855         catch (...)
1856         {
1857                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1858         }
1859
1860         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1861         if ((ServerInstance->SE->GetRef(thisfd) == this))
1862         {
1863                 if (!WriteError.empty())
1864                 {
1865                         User::QuitUser(ServerInstance, this, GetWriteError());
1866                 }
1867         }
1868 }
1869
1870 void User::SetOperQuit(const std::string &oquit)
1871 {
1872         operquitmsg = oquit;
1873 }
1874
1875 const char* User::GetOperQuit()
1876 {
1877         return operquitmsg.c_str();
1878 }
1879
1880 void User::IncreasePenalty(int increase)
1881 {
1882         this->Penalty += increase;
1883 }
1884
1885 void User::DecreasePenalty(int decrease)
1886 {
1887         this->Penalty -= decrease;
1888 }
1889
1890 VisData::VisData()
1891 {
1892 }
1893
1894 VisData::~VisData()
1895 {
1896 }
1897
1898 bool VisData::VisibleTo(User* user)
1899 {
1900         return true;
1901 }
1902