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 InspIRCd-1.2",this->nick,ServerInstance->Config->ServerName);
 920         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 921         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());
 922
 923         ServerInstance->Config->Send005(this);
 924         this->WriteNumeric(42, "%s %s :your unique ID", this->nick, this->uuid);
 925
 926
 927         this->ShowMOTD();
 928
 929         /* Now registered */
 930         if (ServerInstance->Users->unregistered_count)
 931                 ServerInstance->Users->unregistered_count--;
 932
 933         /* Trigger LUSERS output, give modules a chance too */
 934         int MOD_RESULT = 0;
 935         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 936         if (!MOD_RESULT)
 937                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 938
 939         /*
 940          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 941          * for a user that doesn't exist yet.
 942          */
 943         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 944
 945         this->registered = REG_ALL;
 946
 947         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 948
 949         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);
 950         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 951         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 952 }
 953
 954 /** User::UpdateNick()
 955  * re-allocates a nick in the user_hash after they change nicknames,
 956  * returns a pointer to the new user as it may have moved
 957  */
 958 User* User::UpdateNickHash(const char* New)
 959 {
 960         //user_hash::iterator newnick;
 961         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 962
 963         if (!strcasecmp(this->nick,New))
 964                 return oldnick->second;
 965
 966         if (oldnick == ServerInstance->Users->clientlist->end())
 967                 return NULL; /* doesnt exist */
 968
 969         User* olduser = oldnick->second;
 970         (*(ServerInstance->Users->clientlist))[New] = olduser;
 971         ServerInstance->Users->clientlist->erase(oldnick);
 972         return olduser;
 973 }
 974
 975 void User::InvalidateCache()
 976 {
 977         /* Invalidate cache */
 978         if (cached_fullhost)
 979                 free(cached_fullhost);
 980         if (cached_hostip)
 981                 free(cached_hostip);
 982         if (cached_makehost)
 983                 free(cached_makehost);
 984         if (cached_fullrealhost)
 985                 free(cached_fullrealhost);
 986         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 987 }
 988
 989 bool User::ForceNickChange(const char* newnick)
 990 {
 991         /*
 992          * XXX this makes no sense..
 993          * why do we do nothing for change on users not REG_ALL?
 994          * why do we trigger events twice for everyone previously (and just them now)
 995          * i think the first if () needs removing totally, or? -- w00t
 996          */
 997         if (this->registered != REG_ALL)
 998         {
 999                 int MOD_RESULT = 0;
1000
1001                 this->InvalidateCache();
1002
1003                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1004
1005                 if (MOD_RESULT)
1006                 {
1007                         ServerInstance->stats->statsCollisions++;
1008                         return false;
1009                 }
1010
1011                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
1012                 {
1013                         ServerInstance->stats->statsCollisions++;
1014                         return false;
1015                 }
1016         }
1017         else
1018         {
1019                 std::deque<classbase*> dummy;
1020                 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1021                 if (nickhandler) // wtfbbq, when would this not be here
1022                 {
1023                         nickhandler->HandleInternal(1, dummy);
1024                         bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
1025                         nickhandler->HandleInternal(0, dummy);
1026                         return result;
1027                 }
1028         }
1029
1030         // Unreachable.
1031         return false;
1032 }
1033
1034 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1035 {
1036         this->cachedip = "";
1037
1038         switch (protocol_family)
1039         {
1040 #ifdef SUPPORT_IP6LINKS
1041                 case AF_INET6:
1042                 {
1043                         sockaddr_in6* sin = new sockaddr_in6;
1044                         sin->sin6_family = AF_INET6;
1045                         sin->sin6_port = port;
1046                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1047                         this->ip = (sockaddr*)sin;
1048                 }
1049                 break;
1050 #endif
1051                 case AF_INET:
1052                 {
1053                         sockaddr_in* sin = new sockaddr_in;
1054                         sin->sin_family = AF_INET;
1055                         sin->sin_port = port;
1056                         inet_pton(AF_INET, sip, &sin->sin_addr);
1057                         this->ip = (sockaddr*)sin;
1058                 }
1059                 break;
1060                 default:
1061                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1062                 break;
1063         }
1064 }
1065
1066 int User::GetPort()
1067 {
1068         if (this->ip == NULL)
1069                 return 0;
1070
1071         switch (this->GetProtocolFamily())
1072         {
1073 #ifdef SUPPORT_IP6LINKS
1074                 case AF_INET6:
1075                 {
1076                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1077                         return sin->sin6_port;
1078                 }
1079                 break;
1080 #endif
1081                 case AF_INET:
1082                 {
1083                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1084                         return sin->sin_port;
1085                 }
1086                 break;
1087                 default:
1088                 break;
1089         }
1090         return 0;
1091 }
1092
1093 int User::GetProtocolFamily()
1094 {
1095         if (this->ip == NULL)
1096                 return 0;
1097
1098         sockaddr_in* sin = (sockaddr_in*)this->ip;
1099         return sin->sin_family;
1100 }
1101
1102 /*
1103  * XXX the duplication here is horrid..
1104  * do we really need two methods doing essentially the same thing?
1105  */
1106 const char* User::GetIPString()
1107 {
1108         static char buf[1024];
1109
1110         if (this->ip == NULL)
1111                 return "";
1112
1113         if (!this->cachedip.empty())
1114                 return this->cachedip.c_str();
1115
1116         switch (this->GetProtocolFamily())
1117         {
1118 #ifdef SUPPORT_IP6LINKS
1119                 case AF_INET6:
1120                 {
1121                         static char temp[1024];
1122
1123                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1124                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1125                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1126                         if (*buf == ':')
1127                         {
1128                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1129                                 *temp = '0';
1130                                 this->cachedip = temp;
1131                                 return temp;
1132                         }
1133
1134                         this->cachedip = buf;
1135                         return buf;
1136                 }
1137                 break;
1138 #endif
1139                 case AF_INET:
1140                 {
1141                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1142                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1143                         this->cachedip = buf;
1144                         return buf;
1145                 }
1146                 break;
1147                 default:
1148                 break;
1149         }
1150
1151         // Unreachable, probably
1152         return "";
1153 }
1154
1155 /** NOTE: We cannot pass a const reference to this method.
1156  * The string is changed by the workings of the method,
1157  * so that if we pass const ref, we end up copying it to
1158  * something we can change anyway. Makes sense to just let
1159  * the compiler do that copy for us.
1160  */
1161 void User::Write(std::string text)
1162 {
1163         if (!ServerInstance->SE->BoundsCheckFd(this))
1164                 return;
1165
1166         try
1167         {
1168                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1169                 text.append("\r\n");
1170         }
1171         catch (...)
1172         {
1173                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1174                 return;
1175         }
1176
1177         if (this->io)
1178         {
1179                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1180                  * implement their own buffering mechanisms
1181                  */
1182                 try
1183                 {
1184                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1185                 }
1186                 catch (CoreException& modexcept)
1187                 {
1188                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1189                 }
1190         }
1191         else
1192         {
1193                 this->AddWriteBuf(text);
1194         }
1195         ServerInstance->stats->statsSent += text.length();
1196         this->ServerInstance->SE->WantWrite(this);
1197 }
1198
1199 /** Write()
1200  */
1201 void User::Write(const char *text, ...)
1202 {
1203         va_list argsPtr;
1204         char textbuffer[MAXBUF];
1205
1206         va_start(argsPtr, text);
1207         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1208         va_end(argsPtr);
1209
1210         this->Write(std::string(textbuffer));
1211 }
1212
1213 void User::WriteServ(const std::string& text)
1214 {
1215         char textbuffer[MAXBUF];
1216
1217         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1218         this->Write(std::string(textbuffer));
1219 }
1220
1221 /** WriteServ()
1222  *  Same as Write(), except `text' is prefixed with `:server.name '.
1223  */
1224 void User::WriteServ(const char* text, ...)
1225 {
1226         va_list argsPtr;
1227         char textbuffer[MAXBUF];
1228
1229         va_start(argsPtr, text);
1230         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1231         va_end(argsPtr);
1232
1233         this->WriteServ(std::string(textbuffer));
1234 }
1235
1236
1237 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1238 {
1239         va_list argsPtr;
1240         char textbuffer[MAXBUF];
1241
1242         va_start(argsPtr, text);
1243         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1244         va_end(argsPtr);
1245
1246         this->WriteNumeric(numeric, std::string(textbuffer));
1247 }
1248
1249 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1250 {
1251         char textbuffer[MAXBUF];
1252         int MOD_RESULT = 0;
1253
1254         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1255
1256         if (MOD_RESULT)
1257                 return;
1258
1259         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1260         this->Write(std::string(textbuffer));
1261 }
1262
1263 void User::WriteFrom(User *user, const std::string &text)
1264 {
1265         char tb[MAXBUF];
1266
1267         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1268
1269         this->Write(std::string(tb));
1270 }
1271
1272
1273 /* write text from an originating user to originating user */
1274
1275 void User::WriteFrom(User *user, const char* text, ...)
1276 {
1277         va_list argsPtr;
1278         char textbuffer[MAXBUF];
1279
1280         va_start(argsPtr, text);
1281         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1282         va_end(argsPtr);
1283
1284         this->WriteFrom(user, std::string(textbuffer));
1285 }
1286
1287
1288 /* write text to an destination user from a source user (e.g. user privmsg) */
1289
1290 void User::WriteTo(User *dest, const char *data, ...)
1291 {
1292         char textbuffer[MAXBUF];
1293         va_list argsPtr;
1294
1295         va_start(argsPtr, data);
1296         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1297         va_end(argsPtr);
1298
1299         this->WriteTo(dest, std::string(textbuffer));
1300 }
1301
1302 void User::WriteTo(User *dest, const std::string &data)
1303 {
1304         dest->WriteFrom(this, data);
1305 }
1306
1307
1308 void User::WriteCommon(const char* text, ...)
1309 {
1310         char textbuffer[MAXBUF];
1311         va_list argsPtr;
1312
1313         if (this->registered != REG_ALL)
1314                 return;
1315
1316         va_start(argsPtr, text);
1317         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1318         va_end(argsPtr);
1319
1320         this->WriteCommon(std::string(textbuffer));
1321 }
1322
1323 void User::WriteCommon(const std::string &text)
1324 {
1325         bool sent_to_at_least_one = false;
1326         char tb[MAXBUF];
1327
1328         if (this->registered != REG_ALL)
1329                 return;
1330
1331         uniq_id++;
1332
1333         if (!already_sent)
1334                 InitializeAlreadySent(ServerInstance->SE);
1335
1336         /* We dont want to be doing this n times, just once */
1337         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1338         std::string out = tb;
1339
1340         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1341         {
1342                 CUList* ulist = v->first->GetUsers();
1343                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1344                 {
1345                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1346                         {
1347                                 already_sent[i->first->fd] = uniq_id;
1348                                 i->first->Write(out);
1349                                 sent_to_at_least_one = true;
1350                         }
1351                 }
1352         }
1353
1354         /*
1355          * if the user was not in any channels, no users will receive the text. Make sure the user
1356          * receives their OWN message for WriteCommon
1357          */
1358         if (!sent_to_at_least_one)
1359         {
1360                 this->Write(std::string(tb));
1361         }
1362 }
1363
1364
1365 /* write a formatted string to all users who share at least one common
1366  * channel, NOT including the source user e.g. for use in QUIT
1367  */
1368
1369 void User::WriteCommonExcept(const char* text, ...)
1370 {
1371         char textbuffer[MAXBUF];
1372         va_list argsPtr;
1373
1374         va_start(argsPtr, text);
1375         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1376         va_end(argsPtr);
1377
1378         this->WriteCommonExcept(std::string(textbuffer));
1379 }
1380
1381 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1382 {
1383         char tb1[MAXBUF];
1384         char tb2[MAXBUF];
1385
1386         if (this->registered != REG_ALL)
1387                 return;
1388
1389         uniq_id++;
1390
1391         if (!already_sent)
1392                 InitializeAlreadySent(ServerInstance->SE);
1393
1394         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1395         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1396         std::string out1 = tb1;
1397         std::string out2 = tb2;
1398
1399         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1400         {
1401                 CUList *ulist = v->first->GetUsers();
1402                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1403                 {
1404                         if (this != i->first)
1405                         {
1406                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1407                                 {
1408                                         already_sent[i->first->fd] = uniq_id;
1409                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1410                                 }
1411                         }
1412                 }
1413         }
1414 }
1415
1416 void User::WriteCommonExcept(const std::string &text)
1417 {
1418         char tb1[MAXBUF];
1419         std::string out1;
1420
1421         if (this->registered != REG_ALL)
1422                 return;
1423
1424         uniq_id++;
1425
1426         if (!already_sent)
1427                 InitializeAlreadySent(ServerInstance->SE);
1428
1429         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1430         out1 = tb1;
1431
1432         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1433         {
1434                 CUList *ulist = v->first->GetUsers();
1435                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1436                 {
1437                         if (this != i->first)
1438                         {
1439                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1440                                 {
1441                                         already_sent[i->first->fd] = uniq_id;
1442                                         i->first->Write(out1);
1443                                 }
1444                         }
1445                 }
1446         }
1447
1448 }
1449
1450 void User::WriteWallOps(const std::string &text)
1451 {
1452         if (!IS_LOCAL(this))
1453                 return;
1454
1455         std::string wallop("WALLOPS :");
1456         wallop.append(text);
1457
1458         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1459         {
1460                 User* t = *i;
1461                 if (t->IsModeSet('w'))
1462                         this->WriteTo(t,wallop);
1463         }
1464 }
1465
1466 void User::WriteWallOps(const char* text, ...)
1467 {
1468         if (!IS_LOCAL(this))
1469                 return;
1470
1471         char textbuffer[MAXBUF];
1472         va_list argsPtr;
1473
1474         va_start(argsPtr, text);
1475         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1476         va_end(argsPtr);
1477
1478         this->WriteWallOps(std::string(textbuffer));
1479 }
1480
1481 /* return 0 or 1 depending if users u and u2 share one or more common channels
1482  * (used by QUIT, NICK etc which arent channel specific notices)
1483  *
1484  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1485  * the first users channels then the second users channels within the outer loop,
1486  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1487  * all possible iterations). However this new function instead checks against the
1488  * channel's userlist in the inner loop which is a std::map<User*,User*>
1489  * and saves us time as we already know what pointer value we are after.
1490  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1491  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1492  */
1493 bool User::SharesChannelWith(User *other)
1494 {
1495         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1496                 return false;
1497
1498         /* Outer loop */
1499         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1500         {
1501                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1502                  * by replacing it with a map::find which *should* be more efficient
1503                  */
1504                 if (i->first->HasUser(other))
1505                         return true;
1506         }
1507         return false;
1508 }
1509
1510 bool User::ChangeName(const char* gecos)
1511 {
1512         if (!strcmp(gecos, this->fullname))
1513                 return true;
1514
1515         if (IS_LOCAL(this))
1516         {
1517                 int MOD_RESULT = 0;
1518                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1519                 if (MOD_RESULT)
1520                         return false;
1521                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1522         }
1523         strlcpy(this->fullname,gecos,MAXGECOS+1);
1524
1525         return true;
1526 }
1527
1528 bool User::ChangeDisplayedHost(const char* shost)
1529 {
1530         if (!strcmp(shost, this->dhost))
1531                 return true;
1532
1533         if (IS_LOCAL(this))
1534         {
1535                 int MOD_RESULT = 0;
1536                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1537                 if (MOD_RESULT)
1538                         return false;
1539                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1540         }
1541
1542         if (this->ServerInstance->Config->CycleHosts)
1543                 this->WriteCommonExcept("QUIT :Changing hosts");
1544
1545         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1546         strlcpy(this->dhost,shost,64);
1547
1548         this->InvalidateCache();
1549
1550         if (this->ServerInstance->Config->CycleHosts)
1551         {
1552                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1553                 {
1554                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1555                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1556                         if (n.length() > 0)
1557                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1558                 }
1559         }
1560
1561         if (IS_LOCAL(this))
1562                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick,this->dhost);
1563
1564         return true;
1565 }
1566
1567 bool User::ChangeIdent(const char* newident)
1568 {
1569         if (!strcmp(newident, this->ident))
1570                 return true;
1571
1572         if (this->ServerInstance->Config->CycleHosts)
1573                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1574
1575         strlcpy(this->ident, newident, IDENTMAX+1);
1576
1577         this->InvalidateCache();
1578
1579         if (this->ServerInstance->Config->CycleHosts)
1580         {
1581                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1582                 {
1583                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1584                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1585                         if (n.length() > 0)
1586                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1587                 }
1588         }
1589
1590         return true;
1591 }
1592
1593 void User::SendAll(const char* command, const char* text, ...)
1594 {
1595         char textbuffer[MAXBUF];
1596         char formatbuffer[MAXBUF];
1597         va_list argsPtr;
1598
1599         va_start(argsPtr, text);
1600         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1601         va_end(argsPtr);
1602
1603         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1604         std::string fmt = formatbuffer;
1605
1606         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1607         {
1608                 (*i)->Write(fmt);
1609         }
1610 }
1611
1612
1613 std::string User::ChannelList(User* source)
1614 {
1615         std::string list;
1616
1617         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1618         {
1619                 /* If the target is the same as the sender, let them see all their channels.
1620                  * If the channel is NOT private/secret OR the user shares a common channel
1621                  * If the user is an oper, and the <options:operspywhois> option is set.
1622                  */
1623                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1624                 {
1625                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1626                 }
1627         }
1628
1629         return list;
1630 }
1631
1632 void User::SplitChanList(User* dest, const std::string &cl)
1633 {
1634         std::string line;
1635         std::ostringstream prefix;
1636         std::string::size_type start, pos, length;
1637
1638         prefix << this->nick << " " << dest->nick << " :";
1639         line = prefix.str();
1640         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1641
1642         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1643         {
1644                 length = (pos == std::string::npos) ? cl.length() : pos;
1645
1646                 if (line.length() + namelen + length - start > 510)
1647                 {
1648                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1649                         line = prefix.str();
1650                 }
1651
1652                 if(pos == std::string::npos)
1653                 {
1654                         line.append(cl.substr(start, length - start));
1655                         break;
1656                 }
1657                 else
1658                 {
1659                         line.append(cl.substr(start, length - start + 1));
1660                 }
1661         }
1662
1663         if (line.length())
1664         {
1665                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1666         }
1667 }
1668
1669 unsigned int User::GetMaxChans()
1670 {
1671         return this->MaxChans;
1672 }
1673
1674
1675 /*
1676  * Sets a user's connection class.
1677  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1678  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1679  * then their ip will be taken as 'priority' anyway, so for example,
1680  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1681  */
1682 ConnectClass* User::SetClass(const std::string &explicit_name)
1683 {
1684         ConnectClass *found = NULL;
1685
1686         if (!IS_LOCAL(this))
1687                 return NULL;
1688
1689         if (!explicit_name.empty())
1690         {
1691                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1692                 {
1693                         ConnectClass* c = *i;
1694
1695                         if (explicit_name == c->GetName() && !c->GetDisabled())
1696                         {
1697                                 found = c;
1698                         }
1699                 }
1700         }
1701         else
1702         {
1703                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1704                 {
1705                         ConnectClass* c = *i;
1706
1707                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1708                         {
1709                                 if (c->GetPort())
1710                                 {
1711                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1712                                         {
1713                                                 found = c;
1714                                         }
1715                                         else
1716                                                 continue;
1717                                 }
1718                                 else
1719                                 {
1720                                         if (!c->GetDisabled())
1721                                                 found = c;
1722                                 }
1723                         }
1724                 }
1725         }
1726
1727         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1728         if (found)
1729         {
1730                 /* deny change if change will take class over the limit */
1731                 if (found->limit && (found->RefCount + 1 >= found->limit))
1732                 {
1733                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", found->limit);
1734                         return this->MyClass;
1735                 }
1736
1737                 /* should always be valid, but just in case .. */
1738                 if (this->MyClass)
1739                 {
1740                         if (found == this->MyClass) // no point changing this shit :P
1741                                 return this->MyClass;
1742                         this->MyClass->RefCount--;
1743                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1744                 }
1745
1746                 this->MyClass = found;
1747                 this->MyClass->RefCount++;
1748                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1749         }
1750
1751         return this->MyClass;
1752 }
1753
1754 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1755  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1756  * then their ip will be taken as 'priority' anyway, so for example,
1757  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1758  */
1759 ConnectClass* User::GetClass()
1760 {
1761         return this->MyClass;
1762 }
1763
1764 void User::PurgeEmptyChannels()
1765 {
1766         std::vector<Channel*> to_delete;
1767
1768         // firstly decrement the count on each channel
1769         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1770         {
1771                 f->first->RemoveAllPrefixes(this);
1772                 if (f->first->DelUser(this) == 0)
1773                 {
1774                         /* No users left in here, mark it for deletion */
1775                         try
1776                         {
1777                                 to_delete.push_back(f->first);
1778                         }
1779                         catch (...)
1780                         {
1781                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1782                         }
1783                 }
1784         }
1785
1786         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1787         {
1788                 Channel* thischan = *n;
1789                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1790                 if (i2 != ServerInstance->chanlist->end())
1791                 {
1792                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1793                         delete i2->second;
1794                         ServerInstance->chanlist->erase(i2);
1795                         this->chans.erase(*n);
1796                 }
1797         }
1798
1799         this->UnOper();
1800 }
1801
1802 void User::ShowMOTD()
1803 {
1804         if (!ServerInstance->Config->MOTD.size())
1805         {
1806                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick);
1807                 return;
1808         }
1809         this->WriteNumeric(375, "%s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1810
1811         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1812                 this->WriteNumeric(372, "%s :- %s",this->nick,i->c_str());
1813
1814         this->WriteNumeric(376, "%s :End of message of the day.", this->nick);
1815 }
1816
1817 void User::ShowRULES()
1818 {
1819         if (!ServerInstance->Config->RULES.size())
1820         {
1821                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick);
1822                 return;
1823         }
1824
1825         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1826
1827         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1828                 this->WriteNumeric(232, "%s :- %s",this->nick,i->c_str());
1829
1830         this->WriteNumeric(309, "%s :End of RULES command.",this->nick);
1831 }
1832
1833 void User::HandleEvent(EventType et, int errornum)
1834 {
1835         if (this->quitting) // drop everything, user is due to be quit
1836                 return;
1837
1838         /* WARNING: May delete this user! */
1839         int thisfd = this->GetFd();
1840
1841         try
1842         {
1843                 switch (et)
1844                 {
1845                         case EVENT_READ:
1846                                 ServerInstance->ProcessUser(this);
1847                         break;
1848                         case EVENT_WRITE:
1849                                 this->FlushWriteBuf();
1850                         break;
1851                         case EVENT_ERROR:
1852                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1853                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1854                         break;
1855                 }
1856         }
1857         catch (...)
1858         {
1859                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1860         }
1861
1862         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1863         if ((ServerInstance->SE->GetRef(thisfd) == this))
1864         {
1865                 if (!WriteError.empty())
1866                 {
1867                         User::QuitUser(ServerInstance, this, GetWriteError());
1868                 }
1869         }
1870 }
1871
1872 void User::SetOperQuit(const std::string &oquit)
1873 {
1874         operquitmsg = oquit;
1875 }
1876
1877 const char* User::GetOperQuit()
1878 {
1879         return operquitmsg.c_str();
1880 }
1881
1882 void User::IncreasePenalty(int increase)
1883 {
1884         this->Penalty += increase;
1885 }
1886
1887 void User::DecreasePenalty(int decrease)
1888 {
1889         this->Penalty -= decrease;
1890 }
1891
1892 VisData::VisData()
1893 {
1894 }
1895
1896 VisData::~VisData()
1897 {
1898 }
1899
1900 bool VisData::VisibleTo(User* user)
1901 {
1902         return true;
1903 }
1904