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         ServerInstance->SE->Shutdown(this, 2);
 318         ServerInstance->SE->Close(this);
 319 }
 320
 321 char* User::GetFullHost()
 322 {
 323         if (this->cached_fullhost)
 324                 return this->cached_fullhost;
 325
 326         char result[MAXBUF];
 327         char* t = result;
 328         for(char* n = nick; *n; n++)
 329                 *t++ = *n;
 330         *t++ = '!';
 331         for(char* n = ident; *n; n++)
 332                 *t++ = *n;
 333         *t++ = '@';
 334         for(char* n = dhost; *n; n++)
 335                 *t++ = *n;
 336         *t = 0;
 337
 338         this->cached_fullhost = strdup(result);
 339
 340         return this->cached_fullhost;
 341 }
 342
 343 char* User::MakeWildHost()
 344 {
 345         static char nresult[MAXBUF];
 346         char* t = nresult;
 347         *t++ = '*';     *t++ = '!';
 348         *t++ = '*';     *t++ = '@';
 349         for(char* n = dhost; *n; n++)
 350                 *t++ = *n;
 351         *t = 0;
 352         return nresult;
 353 }
 354
 355 int User::ReadData(void* buffer, size_t size)
 356 {
 357         if (IS_LOCAL(this))
 358         {
 359 #ifndef WIN32
 360                 return read(this->fd, buffer, size);
 361 #else
 362                 return recv(this->fd, (char*)buffer, size, 0);
 363 #endif
 364         }
 365         else
 366                 return 0;
 367 }
 368
 369
 370 char* User::GetFullRealHost()
 371 {
 372         if (this->cached_fullrealhost)
 373                 return this->cached_fullrealhost;
 374
 375         char fresult[MAXBUF];
 376         char* t = fresult;
 377         for(char* n = nick; *n; n++)
 378                 *t++ = *n;
 379         *t++ = '!';
 380         for(char* n = ident; *n; n++)
 381                 *t++ = *n;
 382         *t++ = '@';
 383         for(char* n = host; *n; n++)
 384                 *t++ = *n;
 385         *t = 0;
 386
 387         this->cached_fullrealhost = strdup(fresult);
 388
 389         return this->cached_fullrealhost;
 390 }
 391
 392 bool User::IsInvited(const irc::string &channel)
 393 {
 394         time_t now = time(NULL);
 395         InvitedList::iterator safei;
 396         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 397         {
 398                 if (channel == i->first)
 399                 {
 400                         if (i->second != 0 && now > i->second)
 401                         {
 402                                 /* Expired invite, remove it. */
 403                                 safei = i;
 404                                 --i;
 405                                 invites.erase(safei);
 406                                 continue;
 407                         }
 408                         return true;
 409                 }
 410         }
 411         return false;
 412 }
 413
 414 InvitedList* User::GetInviteList()
 415 {
 416         time_t now = time(NULL);
 417         /* Weed out expired invites here. */
 418         InvitedList::iterator safei;
 419         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 420         {
 421                 if (i->second != 0 && now > i->second)
 422                 {
 423                         /* Expired invite, remove it. */
 424                         safei = i;
 425                         --i;
 426                         invites.erase(safei);
 427                 }
 428         }
 429         return &invites;
 430 }
 431
 432 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 433 {
 434         time_t now = time(NULL);
 435         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 436         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 437         {
 438                 if (channel == i->first)
 439                 {
 440                         if (i->second != 0 && invtimeout > i->second)
 441                         {
 442                                 i->second = invtimeout;
 443                         }
 444                 }
 445         }
 446         invites.push_back(std::make_pair(channel, invtimeout));
 447 }
 448
 449 void User::RemoveInvite(const irc::string &channel)
 450 {
 451         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 452         {
 453                 if (channel == i->first)
 454                 {
 455                         invites.erase(i);
 456                         return;
 457                 }
 458         }
 459 }
 460
 461 bool User::HasModePermission(unsigned char mode, ModeType type)
 462 {
 463         if (!IS_LOCAL(this))
 464                 return true;
 465
 466         if (!IS_OPER(this))
 467                 return false;
 468
 469         if (!AllowedUserModes || !AllowedChanModes)
 470                 return false;
 471
 472         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 473
 474 }
 475
 476 bool User::HasPermission(const std::string &command)
 477 {
 478         /*
 479          * users on remote servers can completely bypass all permissions based checks.
 480          * This prevents desyncs when one server has different type/class tags to another.
 481          * That having been said, this does open things up to the possibility of source changes
 482          * allowing remote kills, etc - but if they have access to the src, they most likely have
 483          * access to the conf - so it's an end to a means either way.
 484          */
 485         if (!IS_LOCAL(this))
 486                 return true;
 487
 488         // are they even an oper at all?
 489         if (!IS_OPER(this))
 490         {
 491                 return false;
 492         }
 493
 494         if (!AllowedOperCommands)
 495                 return false;
 496
 497         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 498                 return true;
 499         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 500                 return true;
 501
 502         return false;
 503 }
 504
 505 /** NOTE: We cannot pass a const reference to this method.
 506  * The string is changed by the workings of the method,
 507  * so that if we pass const ref, we end up copying it to
 508  * something we can change anyway. Makes sense to just let
 509  * the compiler do that copy for us.
 510  */
 511 bool User::AddBuffer(std::string a)
 512 {
 513         try
 514         {
 515                 std::string::size_type i = a.rfind('\r');
 516
 517                 while (i != std::string::npos)
 518                 {
 519                         a.erase(i, 1);
 520                         i = a.rfind('\r');
 521                 }
 522
 523                 if (a.length())
 524                         recvq.append(a);
 525
 526                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 527                 {
 528                         this->SetWriteError("RecvQ exceeded");
 529                         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());
 530                         return false;
 531                 }
 532
 533                 return true;
 534         }
 535
 536         catch (...)
 537         {
 538                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::AddBuffer()");
 539                 return false;
 540         }
 541 }
 542
 543 bool User::BufferIsReady()
 544 {
 545         return (recvq.find('\n') != std::string::npos);
 546 }
 547
 548 void User::ClearBuffer()
 549 {
 550         recvq.clear();
 551 }
 552
 553 std::string User::GetBuffer()
 554 {
 555         try
 556         {
 557                 if (recvq.empty())
 558                         return "";
 559
 560                 /* Strip any leading \r or \n off the string.
 561                  * Usually there are only one or two of these,
 562                  * so its is computationally cheap to do.
 563                  */
 564                 std::string::iterator t = recvq.begin();
 565                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 566                 {
 567                         recvq.erase(t);
 568                         t = recvq.begin();
 569                 }
 570
 571                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 572                 {
 573                         /* Find the first complete line, return it as the
 574                          * result, and leave the recvq as whats left
 575                          */
 576                         if (*x == '\n')
 577                         {
 578                                 std::string ret = std::string(recvq.begin(), x);
 579                                 recvq.erase(recvq.begin(), x + 1);
 580                                 return ret;
 581                         }
 582                 }
 583                 return "";
 584         }
 585
 586         catch (...)
 587         {
 588                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 589                 return "";
 590         }
 591 }
 592
 593 void User::AddWriteBuf(const std::string &data)
 594 {
 595         if (*this->GetWriteError())
 596                 return;
 597
 598         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 599         {
 600                 /*
 601                  * Fix by brain - Set the error text BEFORE calling, because
 602                  * if we dont it'll recursively  call here over and over again trying
 603                  * to repeatedly add the text to the sendq!
 604                  */
 605                 this->SetWriteError("SendQ exceeded");
 606                 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());
 607                 return;
 608         }
 609
 610         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 611                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 612         else
 613                 sendq.append(data);
 614 }
 615
 616 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 617 void User::FlushWriteBuf()
 618 {
 619         try
 620         {
 621                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 622                 {
 623                         sendq.clear();
 624                 }
 625                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 626                 {
 627                         int old_sendq_length = sendq.length();
 628                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 629
 630                         if (n_sent == -1)
 631                         {
 632                                 if (errno == EAGAIN)
 633                                 {
 634                                         /* The socket buffer is full. This isnt fatal,
 635                                          * try again later.
 636                                          */
 637                                         this->ServerInstance->SE->WantWrite(this);
 638                                 }
 639                                 else
 640                                 {
 641                                         /* Fatal error, set write error and bail
 642                                          */
 643                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 644                                         return;
 645                                 }
 646                         }
 647                         else
 648                         {
 649                                 /* advance the queue */
 650                                 if (n_sent)
 651                                         this->sendq = this->sendq.substr(n_sent);
 652                                 /* update the user's stats counters */
 653                                 this->bytes_out += n_sent;
 654                                 this->cmds_out++;
 655                                 if (n_sent != old_sendq_length)
 656                                         this->ServerInstance->SE->WantWrite(this);
 657                         }
 658                 }
 659         }
 660
 661         catch (...)
 662         {
 663                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 664         }
 665
 666         if (this->sendq.empty())
 667         {
 668                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 669         }
 670 }
 671
 672 void User::SetWriteError(const std::string &error)
 673 {
 674         // don't try to set the error twice, its already set take the first string.
 675         if (this->WriteError.empty())
 676                 this->WriteError = error;
 677 }
 678
 679 const char* User::GetWriteError()
 680 {
 681         return this->WriteError.c_str();
 682 }
 683
 684 void User::Oper(const std::string &opertype, const std::string &opername)
 685 {
 686         char* mycmd;
 687         char* savept;
 688         char* savept2;
 689
 690         try
 691         {
 692                 this->modes[UM_OPERATOR] = 1;
 693                 this->WriteServ("MODE %s :+o", this->nick);
 694                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 695                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 696                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 697                 ServerInstance->Users->all_opers.push_back(this);
 698
 699                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 700                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 701                 {
 702
 703                         if (AllowedOperCommands)
 704                                 AllowedOperCommands->clear();
 705                         else
 706                                 AllowedOperCommands = new std::map<std::string, bool>;
 707
 708                         if (!AllowedChanModes)
 709                                 AllowedChanModes = new bool[64];
 710
 711                         if (!AllowedUserModes)
 712                                 AllowedUserModes = new bool[64];
 713
 714                         memset(AllowedUserModes, 0, 64);
 715                         memset(AllowedChanModes, 0, 64);
 716
 717                         char* Classes = strdup(iter_opertype->second);
 718                         char* myclass = strtok_r(Classes," ",&savept);
 719                         while (myclass)
 720                         {
 721                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 722                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 723                                 {
 724                                         char* CommandList = strdup(iter_operclass->second.commandlist);
 725                                         mycmd = strtok_r(CommandList," ",&savept2);
 726                                         while (mycmd)
 727                                         {
 728                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 729                                                 mycmd = strtok_r(NULL," ",&savept2);
 730                                         }
 731                                         free(CommandList);
 732                                         this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 733                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 734                                         {
 735                                                 if (*c == '*')
 736                                                 {
 737                                                         memset(this->AllowedUserModes, (int)(true), 64);
 738                                                 }
 739                                                 else
 740                                                 {
 741                                                         this->AllowedUserModes[*c - 'A'] = true;
 742                                                 }
 743                                         }
 744                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 745                                         {
 746                                                 if (*c == '*')
 747                                                 {
 748                                                         memset(this->AllowedChanModes, (int)(true), 64);
 749                                                 }
 750                                                 else
 751                                                 {
 752                                                         this->AllowedChanModes[*c - 'A'] = true;
 753                                                 }
 754                                         }
 755                                 }
 756                                 myclass = strtok_r(NULL," ",&savept);
 757                         }
 758                         free(Classes);
 759                 }
 760
 761                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 762         }
 763
 764         catch (...)
 765         {
 766                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 767         }
 768 }
 769
 770 void User::UnOper()
 771 {
 772         if (IS_OPER(this))
 773         {
 774                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 775                 std::string moderemove("-");
 776
 777                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 778                 {
 779                         if (letter != 'o')
 780                         {
 781                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 782                                 if (mh && mh->NeedsOper())
 783                                         moderemove += letter;
 784                         }
 785                 }
 786
 787                 const char* parameters[] = { this->nick, moderemove.c_str() };
 788                 ServerInstance->Parser->CallHandler("MODE", parameters, 2, this);
 789
 790                 /* unset their oper type (what IS_OPER checks), and remove +o */
 791                 *this->oper = 0;
 792                 this->modes[UM_OPERATOR] = 0;
 793
 794                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 795                 ServerInstance->Users->all_opers.remove(this);
 796
 797                 if (AllowedOperCommands)
 798                 {
 799                         delete AllowedOperCommands;
 800                         AllowedOperCommands = NULL;
 801                 }
 802                 if (AllowedUserModes)
 803                 {
 804                         delete[] AllowedUserModes;
 805                         AllowedUserModes = NULL;
 806                 }
 807                 if (AllowedChanModes)
 808                 {
 809                         delete[] AllowedChanModes;
 810                         AllowedChanModes = NULL;
 811                 }
 812
 813         }
 814 }
 815
 816 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 817 {
 818         Instance->Logs->Log("USERS", DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str());
 819         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str());
 820         user->quietquit = false;
 821         user->quitmsg = quitreason;
 822
 823         if (!*operreason)
 824                 user->operquitmsg = quitreason;
 825         else
 826                 user->operquitmsg = operreason;
 827
 828         Instance->GlobalCulls.AddItem(user);
 829 }
 830
 831 /* adds or updates an entry in the whowas list */
 832 void User::AddToWhoWas()
 833 {
 834         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 835         if (whowas_command)
 836         {
 837                 std::deque<classbase*> params;
 838                 params.push_back(this);
 839                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 840         }
 841 }
 842
 843 /*
 844  * Check class restrictions
 845  */
 846 void User::CheckClass()
 847 {
 848         ConnectClass* a = this->MyClass;
 849
 850         if ((!a) || (a->GetType() == CC_DENY))
 851         {
 852                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 853                 return;
 854         }
 855         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 856         {
 857                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 858                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 859                 return;
 860         }
 861         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 862         {
 863                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 864                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 865                 return;
 866         }
 867
 868         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 869         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 870         this->MaxChans = a->GetMaxChans();
 871 }
 872
 873 void User::FullConnect()
 874 {
 875         ServerInstance->stats->statsConnects++;
 876         this->idle_lastmsg = ServerInstance->Time();
 877
 878         /*
 879          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 880          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 881          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 882          * Don't remove this! -- w00t
 883          */
 884         this->SetClass();
 885
 886         /* Check the password, if one is required by the user's connect class.
 887          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 888          */
 889         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 890         {
 891                 User::QuitUser(ServerInstance, this, "Invalid password");
 892                 return;
 893         }
 894
 895         if (!this->exempt)
 896         {
 897                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 898
 899                 if (r)
 900                 {
 901                         r->Apply(this);
 902                         return;
 903                 }
 904
 905                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 906
 907                 if (n)
 908                 {
 909                         n->Apply(this);
 910                         return;
 911                 }
 912         }
 913
 914         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 915         this->WriteNumeric(001, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 916         this->WriteNumeric(002, "%s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 917         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 918         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());
 919
 920         ServerInstance->Config->Send005(this);
 921
 922         this->WriteNumeric(42, "%s %s :your unique ID", this->nick, this->uuid);
 923
 924
 925         this->ShowMOTD();
 926
 927         /* Now registered */
 928         if (ServerInstance->Users->unregistered_count)
 929                 ServerInstance->Users->unregistered_count--;
 930
 931         /* Trigger LUSERS output, give modules a chance too */
 932         int MOD_RESULT = 0;
 933         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 934         if (!MOD_RESULT)
 935                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 936
 937         /*
 938          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 939          * for a user that doesn't exist yet.
 940          */
 941         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 942
 943         this->registered = REG_ALL;
 944
 945         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 946
 947         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);
 948         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 949         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 950 }
 951
 952 /** User::UpdateNick()
 953  * re-allocates a nick in the user_hash after they change nicknames,
 954  * returns a pointer to the new user as it may have moved
 955  */
 956 User* User::UpdateNickHash(const char* New)
 957 {
 958         //user_hash::iterator newnick;
 959         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 960
 961         if (!strcasecmp(this->nick,New))
 962                 return oldnick->second;
 963
 964         if (oldnick == ServerInstance->Users->clientlist->end())
 965                 return NULL; /* doesnt exist */
 966
 967         User* olduser = oldnick->second;
 968         (*(ServerInstance->Users->clientlist))[New] = olduser;
 969         ServerInstance->Users->clientlist->erase(oldnick);
 970         return olduser;
 971 }
 972
 973 void User::InvalidateCache()
 974 {
 975         /* Invalidate cache */
 976         if (cached_fullhost)
 977                 free(cached_fullhost);
 978         if (cached_hostip)
 979                 free(cached_hostip);
 980         if (cached_makehost)
 981                 free(cached_makehost);
 982         if (cached_fullrealhost)
 983                 free(cached_fullrealhost);
 984         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 985 }
 986
 987 bool User::ForceNickChange(const char* newnick)
 988 {
 989         /*
 990          * XXX this makes no sense..
 991          * why do we do nothing for change on users not REG_ALL?
 992          * why do we trigger events twice for everyone previously (and just them now)
 993          * i think the first if () needs removing totally, or? -- w00t
 994          */
 995         if (this->registered != REG_ALL)
 996         {
 997                 int MOD_RESULT = 0;
 998
 999                 this->InvalidateCache();
1000
1001                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1002
1003                 if (MOD_RESULT)
1004                 {
1005                         ServerInstance->stats->statsCollisions++;
1006                         return false;
1007                 }
1008
1009                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
1010                 {
1011                         ServerInstance->stats->statsCollisions++;
1012                         return false;
1013                 }
1014         }
1015         else
1016         {
1017                 std::deque<classbase*> dummy;
1018                 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1019                 if (nickhandler) // wtfbbq, when would this not be here
1020                 {
1021                         nickhandler->HandleInternal(1, dummy);
1022                         bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
1023                         nickhandler->HandleInternal(0, dummy);
1024                         return result;
1025                 }
1026         }
1027
1028         // Unreachable.
1029         return false;
1030 }
1031
1032 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1033 {
1034         this->cachedip = "";
1035
1036         switch (protocol_family)
1037         {
1038 #ifdef SUPPORT_IP6LINKS
1039                 case AF_INET6:
1040                 {
1041                         sockaddr_in6* sin = new sockaddr_in6;
1042                         sin->sin6_family = AF_INET6;
1043                         sin->sin6_port = port;
1044                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1045                         this->ip = (sockaddr*)sin;
1046                 }
1047                 break;
1048 #endif
1049                 case AF_INET:
1050                 {
1051                         sockaddr_in* sin = new sockaddr_in;
1052                         sin->sin_family = AF_INET;
1053                         sin->sin_port = port;
1054                         inet_pton(AF_INET, sip, &sin->sin_addr);
1055                         this->ip = (sockaddr*)sin;
1056                 }
1057                 break;
1058                 default:
1059                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1060                 break;
1061         }
1062 }
1063
1064 int User::GetPort()
1065 {
1066         if (this->ip == NULL)
1067                 return 0;
1068
1069         switch (this->GetProtocolFamily())
1070         {
1071 #ifdef SUPPORT_IP6LINKS
1072                 case AF_INET6:
1073                 {
1074                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1075                         return sin->sin6_port;
1076                 }
1077                 break;
1078 #endif
1079                 case AF_INET:
1080                 {
1081                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1082                         return sin->sin_port;
1083                 }
1084                 break;
1085                 default:
1086                 break;
1087         }
1088         return 0;
1089 }
1090
1091 int User::GetProtocolFamily()
1092 {
1093         if (this->ip == NULL)
1094                 return 0;
1095
1096         sockaddr_in* sin = (sockaddr_in*)this->ip;
1097         return sin->sin_family;
1098 }
1099
1100 /*
1101  * XXX the duplication here is horrid..
1102  * do we really need two methods doing essentially the same thing?
1103  */
1104 const char* User::GetIPString()
1105 {
1106         static char buf[1024];
1107
1108         if (this->ip == NULL)
1109                 return "";
1110
1111         if (!this->cachedip.empty())
1112                 return this->cachedip.c_str();
1113
1114         switch (this->GetProtocolFamily())
1115         {
1116 #ifdef SUPPORT_IP6LINKS
1117                 case AF_INET6:
1118                 {
1119                         static char temp[1024];
1120
1121                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1122                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1123                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1124                         if (*buf == ':')
1125                         {
1126                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1127                                 *temp = '0';
1128                                 this->cachedip = temp;
1129                                 return temp;
1130                         }
1131
1132                         this->cachedip = buf;
1133                         return buf;
1134                 }
1135                 break;
1136 #endif
1137                 case AF_INET:
1138                 {
1139                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1140                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1141                         this->cachedip = buf;
1142                         return buf;
1143                 }
1144                 break;
1145                 default:
1146                 break;
1147         }
1148
1149         // Unreachable, probably
1150         return "";
1151 }
1152
1153 /** NOTE: We cannot pass a const reference to this method.
1154  * The string is changed by the workings of the method,
1155  * so that if we pass const ref, we end up copying it to
1156  * something we can change anyway. Makes sense to just let
1157  * the compiler do that copy for us.
1158  */
1159 void User::Write(std::string text)
1160 {
1161         if (!ServerInstance->SE->BoundsCheckFd(this))
1162                 return;
1163
1164         try
1165         {
1166                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1167                 text.append("\r\n");
1168         }
1169         catch (...)
1170         {
1171                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1172                 return;
1173         }
1174
1175         if (this->io)
1176         {
1177                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1178                  * implement their own buffering mechanisms
1179                  */
1180                 try
1181                 {
1182                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1183                 }
1184                 catch (CoreException& modexcept)
1185                 {
1186                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1187                 }
1188         }
1189         else
1190         {
1191                 this->AddWriteBuf(text);
1192         }
1193         ServerInstance->stats->statsSent += text.length();
1194         this->ServerInstance->SE->WantWrite(this);
1195 }
1196
1197 /** Write()
1198  */
1199 void User::Write(const char *text, ...)
1200 {
1201         va_list argsPtr;
1202         char textbuffer[MAXBUF];
1203
1204         va_start(argsPtr, text);
1205         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1206         va_end(argsPtr);
1207
1208         this->Write(std::string(textbuffer));
1209 }
1210
1211 void User::WriteServ(const std::string& text)
1212 {
1213         char textbuffer[MAXBUF];
1214
1215         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1216         this->Write(std::string(textbuffer));
1217 }
1218
1219 /** WriteServ()
1220  *  Same as Write(), except `text' is prefixed with `:server.name '.
1221  */
1222 void User::WriteServ(const char* text, ...)
1223 {
1224         va_list argsPtr;
1225         char textbuffer[MAXBUF];
1226
1227         va_start(argsPtr, text);
1228         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1229         va_end(argsPtr);
1230
1231         this->WriteServ(std::string(textbuffer));
1232 }
1233
1234
1235 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1236 {
1237         va_list argsPtr;
1238         char textbuffer[MAXBUF];
1239
1240         va_start(argsPtr, text);
1241         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1242         va_end(argsPtr);
1243
1244         this->WriteNumeric(numeric, std::string(textbuffer));
1245 }
1246
1247 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1248 {
1249         char textbuffer[MAXBUF];
1250         int MOD_RESULT = 0;
1251
1252         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1253
1254         if (MOD_RESULT)
1255                 return;
1256
1257         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1258         this->Write(std::string(textbuffer));
1259 }
1260
1261 void User::WriteFrom(User *user, const std::string &text)
1262 {
1263         char tb[MAXBUF];
1264
1265         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1266
1267         this->Write(std::string(tb));
1268 }
1269
1270
1271 /* write text from an originating user to originating user */
1272
1273 void User::WriteFrom(User *user, const char* text, ...)
1274 {
1275         va_list argsPtr;
1276         char textbuffer[MAXBUF];
1277
1278         va_start(argsPtr, text);
1279         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1280         va_end(argsPtr);
1281
1282         this->WriteFrom(user, std::string(textbuffer));
1283 }
1284
1285
1286 /* write text to an destination user from a source user (e.g. user privmsg) */
1287
1288 void User::WriteTo(User *dest, const char *data, ...)
1289 {
1290         char textbuffer[MAXBUF];
1291         va_list argsPtr;
1292
1293         va_start(argsPtr, data);
1294         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1295         va_end(argsPtr);
1296
1297         this->WriteTo(dest, std::string(textbuffer));
1298 }
1299
1300 void User::WriteTo(User *dest, const std::string &data)
1301 {
1302         dest->WriteFrom(this, data);
1303 }
1304
1305
1306 void User::WriteCommon(const char* text, ...)
1307 {
1308         char textbuffer[MAXBUF];
1309         va_list argsPtr;
1310
1311         if (this->registered != REG_ALL)
1312                 return;
1313
1314         va_start(argsPtr, text);
1315         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1316         va_end(argsPtr);
1317
1318         this->WriteCommon(std::string(textbuffer));
1319 }
1320
1321 void User::WriteCommon(const std::string &text)
1322 {
1323         bool sent_to_at_least_one = false;
1324         char tb[MAXBUF];
1325
1326         if (this->registered != REG_ALL)
1327                 return;
1328
1329         uniq_id++;
1330
1331         if (!already_sent)
1332                 InitializeAlreadySent(ServerInstance->SE);
1333
1334         /* We dont want to be doing this n times, just once */
1335         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1336         std::string out = tb;
1337
1338         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1339         {
1340                 CUList* ulist = v->first->GetUsers();
1341                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1342                 {
1343                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1344                         {
1345                                 already_sent[i->first->fd] = uniq_id;
1346                                 i->first->Write(out);
1347                                 sent_to_at_least_one = true;
1348                         }
1349                 }
1350         }
1351
1352         /*
1353          * if the user was not in any channels, no users will receive the text. Make sure the user
1354          * receives their OWN message for WriteCommon
1355          */
1356         if (!sent_to_at_least_one)
1357         {
1358                 this->Write(std::string(tb));
1359         }
1360 }
1361
1362
1363 /* write a formatted string to all users who share at least one common
1364  * channel, NOT including the source user e.g. for use in QUIT
1365  */
1366
1367 void User::WriteCommonExcept(const char* text, ...)
1368 {
1369         char textbuffer[MAXBUF];
1370         va_list argsPtr;
1371
1372         va_start(argsPtr, text);
1373         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1374         va_end(argsPtr);
1375
1376         this->WriteCommonExcept(std::string(textbuffer));
1377 }
1378
1379 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1380 {
1381         char tb1[MAXBUF];
1382         char tb2[MAXBUF];
1383
1384         if (this->registered != REG_ALL)
1385                 return;
1386
1387         uniq_id++;
1388
1389         if (!already_sent)
1390                 InitializeAlreadySent(ServerInstance->SE);
1391
1392         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1393         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1394         std::string out1 = tb1;
1395         std::string out2 = tb2;
1396
1397         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1398         {
1399                 CUList *ulist = v->first->GetUsers();
1400                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1401                 {
1402                         if (this != i->first)
1403                         {
1404                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1405                                 {
1406                                         already_sent[i->first->fd] = uniq_id;
1407                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1408                                 }
1409                         }
1410                 }
1411         }
1412 }
1413
1414 void User::WriteCommonExcept(const std::string &text)
1415 {
1416         char tb1[MAXBUF];
1417         std::string out1;
1418
1419         if (this->registered != REG_ALL)
1420                 return;
1421
1422         uniq_id++;
1423
1424         if (!already_sent)
1425                 InitializeAlreadySent(ServerInstance->SE);
1426
1427         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1428         out1 = tb1;
1429
1430         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1431         {
1432                 CUList *ulist = v->first->GetUsers();
1433                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1434                 {
1435                         if (this != i->first)
1436                         {
1437                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1438                                 {
1439                                         already_sent[i->first->fd] = uniq_id;
1440                                         i->first->Write(out1);
1441                                 }
1442                         }
1443                 }
1444         }
1445
1446 }
1447
1448 void User::WriteWallOps(const std::string &text)
1449 {
1450         if (!IS_OPER(this) && IS_LOCAL(this))
1451                 return;
1452
1453         std::string wallop("WALLOPS :");
1454         wallop.append(text);
1455
1456         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1457         {
1458                 User* t = *i;
1459                 if (t->IsModeSet('w'))
1460                         this->WriteTo(t,wallop);
1461         }
1462 }
1463
1464 void User::WriteWallOps(const char* text, ...)
1465 {
1466         char textbuffer[MAXBUF];
1467         va_list argsPtr;
1468
1469         va_start(argsPtr, text);
1470         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1471         va_end(argsPtr);
1472
1473         this->WriteWallOps(std::string(textbuffer));
1474 }
1475
1476 /* return 0 or 1 depending if users u and u2 share one or more common channels
1477  * (used by QUIT, NICK etc which arent channel specific notices)
1478  *
1479  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1480  * the first users channels then the second users channels within the outer loop,
1481  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1482  * all possible iterations). However this new function instead checks against the
1483  * channel's userlist in the inner loop which is a std::map<User*,User*>
1484  * and saves us time as we already know what pointer value we are after.
1485  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1486  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1487  */
1488 bool User::SharesChannelWith(User *other)
1489 {
1490         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1491                 return false;
1492
1493         /* Outer loop */
1494         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1495         {
1496                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1497                  * by replacing it with a map::find which *should* be more efficient
1498                  */
1499                 if (i->first->HasUser(other))
1500                         return true;
1501         }
1502         return false;
1503 }
1504
1505 bool User::ChangeName(const char* gecos)
1506 {
1507         if (!strcmp(gecos, this->fullname))
1508                 return true;
1509
1510         if (IS_LOCAL(this))
1511         {
1512                 int MOD_RESULT = 0;
1513                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1514                 if (MOD_RESULT)
1515                         return false;
1516                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1517         }
1518         strlcpy(this->fullname,gecos,MAXGECOS+1);
1519
1520         return true;
1521 }
1522
1523 bool User::ChangeDisplayedHost(const char* shost)
1524 {
1525         if (!strcmp(shost, this->dhost))
1526                 return true;
1527
1528         if (IS_LOCAL(this))
1529         {
1530                 int MOD_RESULT = 0;
1531                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1532                 if (MOD_RESULT)
1533                         return false;
1534                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1535         }
1536
1537         if (this->ServerInstance->Config->CycleHosts)
1538                 this->WriteCommonExcept("QUIT :Changing hosts");
1539
1540         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1541         strlcpy(this->dhost,shost,64);
1542
1543         this->InvalidateCache();
1544
1545         if (this->ServerInstance->Config->CycleHosts)
1546         {
1547                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1548                 {
1549                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1550                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1551                         if (n.length() > 0)
1552                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1553                 }
1554         }
1555
1556         if (IS_LOCAL(this))
1557                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick,this->dhost);
1558
1559         return true;
1560 }
1561
1562 bool User::ChangeIdent(const char* newident)
1563 {
1564         if (!strcmp(newident, this->ident))
1565                 return true;
1566
1567         if (this->ServerInstance->Config->CycleHosts)
1568                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1569
1570         strlcpy(this->ident, newident, IDENTMAX+1);
1571
1572         this->InvalidateCache();
1573
1574         if (this->ServerInstance->Config->CycleHosts)
1575         {
1576                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1577                 {
1578                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1579                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1580                         if (n.length() > 0)
1581                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1582                 }
1583         }
1584
1585         return true;
1586 }
1587
1588 void User::SendAll(const char* command, const char* text, ...)
1589 {
1590         char textbuffer[MAXBUF];
1591         char formatbuffer[MAXBUF];
1592         va_list argsPtr;
1593
1594         va_start(argsPtr, text);
1595         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1596         va_end(argsPtr);
1597
1598         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1599         std::string fmt = formatbuffer;
1600
1601         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1602         {
1603                 (*i)->Write(fmt);
1604         }
1605 }
1606
1607
1608 std::string User::ChannelList(User* source)
1609 {
1610         std::string list;
1611
1612         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1613         {
1614                 /* If the target is the same as the sender, let them see all their channels.
1615                  * If the channel is NOT private/secret OR the user shares a common channel
1616                  * If the user is an oper, and the <options:operspywhois> option is set.
1617                  */
1618                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1619                 {
1620                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1621                 }
1622         }
1623
1624         return list;
1625 }
1626
1627 void User::SplitChanList(User* dest, const std::string &cl)
1628 {
1629         std::string line;
1630         std::ostringstream prefix;
1631         std::string::size_type start, pos, length;
1632
1633         prefix << this->nick << " " << dest->nick << " :";
1634         line = prefix.str();
1635         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1636
1637         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1638         {
1639                 length = (pos == std::string::npos) ? cl.length() : pos;
1640
1641                 if (line.length() + namelen + length - start > 510)
1642                 {
1643                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1644                         line = prefix.str();
1645                 }
1646
1647                 if(pos == std::string::npos)
1648                 {
1649                         line.append(cl.substr(start, length - start));
1650                         break;
1651                 }
1652                 else
1653                 {
1654                         line.append(cl.substr(start, length - start + 1));
1655                 }
1656         }
1657
1658         if (line.length())
1659         {
1660                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1661         }
1662 }
1663
1664 unsigned int User::GetMaxChans()
1665 {
1666         return this->MaxChans;
1667 }
1668
1669
1670 /*
1671  * Sets a user's connection class.
1672  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1673  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1674  * then their ip will be taken as 'priority' anyway, so for example,
1675  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1676  */
1677 ConnectClass* User::SetClass(const std::string &explicit_name)
1678 {
1679         ConnectClass *found = NULL;
1680
1681         if (!IS_LOCAL(this))
1682                 return NULL;
1683
1684         if (!explicit_name.empty())
1685         {
1686                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1687                 {
1688                         ConnectClass* c = *i;
1689
1690                         if (explicit_name == c->GetName() && !c->GetDisabled())
1691                         {
1692                                 found = c;
1693                         }
1694                 }
1695         }
1696         else
1697         {
1698                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1699                 {
1700                         ConnectClass* c = *i;
1701
1702                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1703                         {
1704                                 if (c->GetPort())
1705                                 {
1706                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1707                                         {
1708                                                 found = c;
1709                                         }
1710                                         else
1711                                                 continue;
1712                                 }
1713                                 else
1714                                 {
1715                                         if (!c->GetDisabled())
1716                                                 found = c;
1717                                 }
1718                         }
1719                 }
1720         }
1721
1722         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1723         if (found)
1724         {
1725                 /* deny change if change will take class over the limit */
1726                 if (found->limit && (found->RefCount + 1 >= found->limit))
1727                 {
1728                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", found->limit);
1729                         return this->MyClass;
1730                 }
1731
1732                 /* should always be valid, but just in case .. */
1733                 if (this->MyClass)
1734                 {
1735                         if (found == this->MyClass) // no point changing this shit :P
1736                                 return this->MyClass;
1737                         this->MyClass->RefCount--;
1738                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1739                 }
1740
1741                 this->MyClass = found;
1742                 this->MyClass->RefCount++;
1743                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1744         }
1745
1746         return this->MyClass;
1747 }
1748
1749 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1750  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1751  * then their ip will be taken as 'priority' anyway, so for example,
1752  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1753  */
1754 ConnectClass* User::GetClass()
1755 {
1756         return this->MyClass;
1757 }
1758
1759 void User::PurgeEmptyChannels()
1760 {
1761         std::vector<Channel*> to_delete;
1762
1763         // firstly decrement the count on each channel
1764         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1765         {
1766                 f->first->RemoveAllPrefixes(this);
1767                 if (f->first->DelUser(this) == 0)
1768                 {
1769                         /* No users left in here, mark it for deletion */
1770                         try
1771                         {
1772                                 to_delete.push_back(f->first);
1773                         }
1774                         catch (...)
1775                         {
1776                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1777                         }
1778                 }
1779         }
1780
1781         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1782         {
1783                 Channel* thischan = *n;
1784                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1785                 if (i2 != ServerInstance->chanlist->end())
1786                 {
1787                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1788                         delete i2->second;
1789                         ServerInstance->chanlist->erase(i2);
1790                         this->chans.erase(*n);
1791                 }
1792         }
1793
1794         this->UnOper();
1795 }
1796
1797 void User::ShowMOTD()
1798 {
1799         if (!ServerInstance->Config->MOTD.size())
1800         {
1801                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick);
1802                 return;
1803         }
1804         this->WriteNumeric(375, "%s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1805
1806         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1807                 this->WriteNumeric(372, "%s :- %s",this->nick,i->c_str());
1808
1809         this->WriteNumeric(376, "%s :End of message of the day.", this->nick);
1810 }
1811
1812 void User::ShowRULES()
1813 {
1814         if (!ServerInstance->Config->RULES.size())
1815         {
1816                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick);
1817                 return;
1818         }
1819
1820         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1821
1822         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1823                 this->WriteNumeric(232, "%s :- %s",this->nick,i->c_str());
1824
1825         this->WriteNumeric(309, "%s :End of RULES command.",this->nick);
1826 }
1827
1828 void User::HandleEvent(EventType et, int errornum)
1829 {
1830         if (this->quitting) // drop everything, user is due to be quit
1831                 return;
1832
1833         /* WARNING: May delete this user! */
1834         int thisfd = this->GetFd();
1835
1836         try
1837         {
1838                 switch (et)
1839                 {
1840                         case EVENT_READ:
1841                                 ServerInstance->ProcessUser(this);
1842                         break;
1843                         case EVENT_WRITE:
1844                                 this->FlushWriteBuf();
1845                         break;
1846                         case EVENT_ERROR:
1847                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1848                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1849                         break;
1850                 }
1851         }
1852         catch (...)
1853         {
1854                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1855         }
1856
1857         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1858         if ((ServerInstance->SE->GetRef(thisfd) == this))
1859         {
1860                 if (!WriteError.empty())
1861                 {
1862                         User::QuitUser(ServerInstance, this, GetWriteError());
1863                 }
1864         }
1865 }
1866
1867 void User::SetOperQuit(const std::string &oquit)
1868 {
1869         operquitmsg = oquit;
1870 }
1871
1872 const char* User::GetOperQuit()
1873 {
1874         return operquitmsg.c_str();
1875 }
1876
1877 void User::IncreasePenalty(int increase)
1878 {
1879         this->Penalty += increase;
1880 }
1881
1882 void User::DecreasePenalty(int decrease)
1883 {
1884         this->Penalty -= decrease;
1885 }
1886
1887 VisData::VisData()
1888 {
1889 }
1890
1891 VisData::~VisData()
1892 {
1893 }
1894
1895 bool VisData::VisibleTo(User* user)
1896 {
1897         return true;
1898 }
1899