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[MAX_DESCRIPTORS] = {0};
  25
  26 /* XXX: Used for speeding up WriteCommon operations */
  27 unsigned long uniq_id = 0;
  28
  29 std::string User::ProcessNoticeMasks(const char *sm)
  30 {
  31         bool adding = true, oldadding = false;
  32         const char *c = sm;
  33         std::string output;
  34
  35         while (c && *c)
  36         {
  37                 switch (*c)
  38                 {
  39                         case '+':
  40                                 adding = true;
  41                         break;
  42                         case '-':
  43                                 adding = false;
  44                         break;
  45                         case '*':
  46                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  47                                 {
  48                                         if (ServerInstance->SNO->IsEnabled(d))
  49                                         {
  50                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  51                                                 {
  52                                                         if ((oldadding != adding) || (!output.length()))
  53                                                                 output += (adding ? '+' : '-');
  54
  55                                                         this->SetNoticeMask(d, adding);
  56
  57                                                         output += d;
  58                                                 }
  59                                         }
  60                                         oldadding = adding;
  61                                 }
  62                         break;
  63                         default:
  64                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  65                                 {
  66                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  67                                         {
  68                                                 if ((oldadding != adding) || (!output.length()))
  69                                                         output += (adding ? '+' : '-');
  70
  71                                                 this->SetNoticeMask(*c, adding);
  72
  73                                                 output += *c;
  74                                         }
  75                                 }
  76                                 else
  77                                         this->WriteServ("501 %s %c :is unknown snomask char to me", this->nick, *c);
  78
  79                                 oldadding = adding;
  80                         break;
  81                 }
  82
  83                 *c++;
  84         }
  85
  86         return output;
  87 }
  88
  89 void User::StartDNSLookup()
  90 {
  91         try
  92         {
  93                 bool cached;
  94                 const char* sip = this->GetIPString();
  95
  96                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
  97                 if (!strncmp(sip, "0::ffff:", 8))
  98                         res_reverse = new UserResolver(this->ServerInstance, this, sip + 8, DNS_QUERY_PTR4, cached);
  99                 else
 100                         res_reverse = new UserResolver(this->ServerInstance, this, sip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 101
 102                 this->ServerInstance->AddResolver(res_reverse, cached);
 103         }
 104         catch (CoreException& e)
 105         {
 106                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 107         }
 108 }
 109
 110 bool User::IsNoticeMaskSet(unsigned char sm)
 111 {
 112         return (snomasks[sm-65]);
 113 }
 114
 115 void User::SetNoticeMask(unsigned char sm, bool value)
 116 {
 117         snomasks[sm-65] = value;
 118 }
 119
 120 const char* User::FormatNoticeMasks()
 121 {
 122         static char data[MAXBUF];
 123         int offset = 0;
 124
 125         for (int n = 0; n < 64; n++)
 126         {
 127                 if (snomasks[n])
 128                         data[offset++] = n+65;
 129         }
 130
 131         data[offset] = 0;
 132         return data;
 133 }
 134
 135
 136
 137 bool User::IsModeSet(unsigned char m)
 138 {
 139         return (modes[m-65]);
 140 }
 141
 142 void User::SetMode(unsigned char m, bool value)
 143 {
 144         modes[m-65] = value;
 145 }
 146
 147 const char* User::FormatModes()
 148 {
 149         static char data[MAXBUF];
 150         int offset = 0;
 151         for (int n = 0; n < 64; n++)
 152         {
 153                 if (modes[n])
 154                         data[offset++] = n+65;
 155         }
 156         data[offset] = 0;
 157         return data;
 158 }
 159
 160 void User::DecrementModes()
 161 {
 162         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 163         for (unsigned char n = 'A'; n <= 'z'; n++)
 164         {
 165                 if (modes[n-65])
 166                 {
 167                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 168                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 169                         if (mh)
 170                         {
 171                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 172                                 mh->ChangeCount(-1);
 173                         }
 174                 }
 175         }
 176 }
 177
 178 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 179 {
 180         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 181         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 182         reset_due = ServerInstance->Time();
 183         age = ServerInstance->Time();
 184         Penalty = 0;
 185         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 186         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 187         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 188         fd = -1;
 189         recvq.clear();
 190         sendq.clear();
 191         WriteError.clear();
 192         res_forward = res_reverse = NULL;
 193         Visibility = NULL;
 194         ip = NULL;
 195         MyClass = NULL;
 196         AllowedOperCommands = NULL;
 197         chans.clear();
 198         invites.clear();
 199         memset(modes,0,sizeof(modes));
 200         memset(snomasks,0,sizeof(snomasks));
 201         /* Invalidate cache */
 202         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 203
 204         if (uid.empty())
 205                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 206         else
 207                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 208
 209         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 210
 211         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 212         if (finduuid == Instance->Users->uuidlist->end())
 213                 (*Instance->Users->uuidlist)[uuid] = this;
 214         else
 215                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 216 }
 217
 218 User::~User()
 219 {
 220         /* NULL for remote users :) */
 221         if (this->MyClass)
 222         {
 223                 this->MyClass->RefCount--;
 224                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %u", this->MyClass->RefCount);
 225         }
 226         if (this->AllowedOperCommands)
 227         {
 228                 delete AllowedOperCommands;
 229                 AllowedOperCommands = NULL;
 230         }
 231
 232         this->InvalidateCache();
 233         this->DecrementModes();
 234
 235         if (ip)
 236         {
 237                 ServerInstance->Users->RemoveCloneCounts(this);
 238
 239                 if (this->GetProtocolFamily() == AF_INET)
 240                 {
 241                         delete (sockaddr_in*)ip;
 242                 }
 243 #ifdef SUPPORT_IP6LINKS
 244                 else
 245                 {
 246                         delete (sockaddr_in6*)ip;
 247                 }
 248 #endif
 249         }
 250
 251         ServerInstance->Users->uuidlist->erase(uuid);
 252 }
 253
 254 char* User::MakeHost()
 255 {
 256         if (this->cached_makehost)
 257                 return this->cached_makehost;
 258
 259         char nhost[MAXBUF];
 260         /* This is much faster than snprintf */
 261         char* t = nhost;
 262         for(char* n = ident; *n; n++)
 263                 *t++ = *n;
 264         *t++ = '@';
 265         for(char* n = host; *n; n++)
 266                 *t++ = *n;
 267         *t = 0;
 268
 269         this->cached_makehost = strdup(nhost);
 270
 271         return this->cached_makehost;
 272 }
 273
 274 char* User::MakeHostIP()
 275 {
 276         if (this->cached_hostip)
 277                 return this->cached_hostip;
 278
 279         char ihost[MAXBUF];
 280         /* This is much faster than snprintf */
 281         char* t = ihost;
 282         for(char* n = ident; *n; n++)
 283                 *t++ = *n;
 284         *t++ = '@';
 285         for(const char* n = this->GetIPString(); *n; n++)
 286                 *t++ = *n;
 287         *t = 0;
 288
 289         this->cached_hostip = strdup(ihost);
 290
 291         return this->cached_hostip;
 292 }
 293
 294 void User::CloseSocket()
 295 {
 296         ServerInstance->SE->Shutdown(this, 2);
 297         ServerInstance->SE->Close(this);
 298 }
 299
 300 char* User::GetFullHost()
 301 {
 302         if (this->cached_fullhost)
 303                 return this->cached_fullhost;
 304
 305         char result[MAXBUF];
 306         char* t = result;
 307         for(char* n = nick; *n; n++)
 308                 *t++ = *n;
 309         *t++ = '!';
 310         for(char* n = ident; *n; n++)
 311                 *t++ = *n;
 312         *t++ = '@';
 313         for(char* n = dhost; *n; n++)
 314                 *t++ = *n;
 315         *t = 0;
 316
 317         this->cached_fullhost = strdup(result);
 318
 319         return this->cached_fullhost;
 320 }
 321
 322 char* User::MakeWildHost()
 323 {
 324         static char nresult[MAXBUF];
 325         char* t = nresult;
 326         *t++ = '*';     *t++ = '!';
 327         *t++ = '*';     *t++ = '@';
 328         for(char* n = dhost; *n; n++)
 329                 *t++ = *n;
 330         *t = 0;
 331         return nresult;
 332 }
 333
 334 int User::ReadData(void* buffer, size_t size)
 335 {
 336         if (IS_LOCAL(this))
 337         {
 338 #ifndef WIN32
 339                 return read(this->fd, buffer, size);
 340 #else
 341                 return recv(this->fd, (char*)buffer, size, 0);
 342 #endif
 343         }
 344         else
 345                 return 0;
 346 }
 347
 348
 349 char* User::GetFullRealHost()
 350 {
 351         if (this->cached_fullrealhost)
 352                 return this->cached_fullrealhost;
 353
 354         char fresult[MAXBUF];
 355         char* t = fresult;
 356         for(char* n = nick; *n; n++)
 357                 *t++ = *n;
 358         *t++ = '!';
 359         for(char* n = ident; *n; n++)
 360                 *t++ = *n;
 361         *t++ = '@';
 362         for(char* n = host; *n; n++)
 363                 *t++ = *n;
 364         *t = 0;
 365
 366         this->cached_fullrealhost = strdup(fresult);
 367
 368         return this->cached_fullrealhost;
 369 }
 370
 371 bool User::IsInvited(const irc::string &channel)
 372 {
 373         time_t now = time(NULL);
 374         InvitedList::iterator safei;
 375         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 376         {
 377                 if (channel == i->first)
 378                 {
 379                         if (i->second != 0 && now > i->second)
 380                         {
 381                                 /* Expired invite, remove it. */
 382                                 safei = i;
 383                                 --i;
 384                                 invites.erase(safei);
 385                                 continue;
 386                         }
 387                         return true;
 388                 }
 389         }
 390         return false;
 391 }
 392
 393 InvitedList* User::GetInviteList()
 394 {
 395         time_t now = time(NULL);
 396         /* Weed out expired invites here. */
 397         InvitedList::iterator safei;
 398         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 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                 }
 407         }
 408         return &invites;
 409 }
 410
 411 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 412 {
 413         time_t now = time(NULL);
 414         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 415         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 416         {
 417                 if (channel == i->first)
 418                 {
 419                         if (i->second != 0 && invtimeout > i->second)
 420                         {
 421                                 i->second = invtimeout;
 422                         }
 423                 }
 424         }
 425         invites.push_back(std::make_pair(channel, invtimeout));
 426 }
 427
 428 void User::RemoveInvite(const irc::string &channel)
 429 {
 430         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 431         {
 432                 if (channel == i->first)
 433                 {
 434                         invites.erase(i);
 435                         return;
 436                 }
 437         }
 438 }
 439
 440 bool User::HasPermission(const std::string &command)
 441 {
 442         /*
 443          * users on remote servers can completely bypass all permissions based checks.
 444          * This prevents desyncs when one server has different type/class tags to another.
 445          * That having been said, this does open things up to the possibility of source changes
 446          * allowing remote kills, etc - but if they have access to the src, they most likely have
 447          * access to the conf - so it's an end to a means either way.
 448          */
 449         if (!IS_LOCAL(this))
 450                 return true;
 451
 452         // are they even an oper at all?
 453         if (!IS_OPER(this))
 454         {
 455                 return false;
 456         }
 457
 458         if (!AllowedOperCommands)
 459                 return false;
 460
 461         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 462                 return true;
 463         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 464                 return true;
 465
 466         return false;
 467 }
 468
 469 /** NOTE: We cannot pass a const reference to this method.
 470  * The string is changed by the workings of the method,
 471  * so that if we pass const ref, we end up copying it to
 472  * something we can change anyway. Makes sense to just let
 473  * the compiler do that copy for us.
 474  */
 475 bool User::AddBuffer(std::string a)
 476 {
 477         try
 478         {
 479                 std::string::size_type i = a.rfind('\r');
 480
 481                 while (i != std::string::npos)
 482                 {
 483                         a.erase(i, 1);
 484                         i = a.rfind('\r');
 485                 }
 486
 487                 if (a.length())
 488                         recvq.append(a);
 489
 490                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 491                 {
 492                         this->SetWriteError("RecvQ exceeded");
 493                         ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->MyClass->GetRecvqMax());
 494                         return false;
 495                 }
 496
 497                 return true;
 498         }
 499
 500         catch (...)
 501         {
 502                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::AddBuffer()");
 503                 return false;
 504         }
 505 }
 506
 507 bool User::BufferIsReady()
 508 {
 509         return (recvq.find('\n') != std::string::npos);
 510 }
 511
 512 void User::ClearBuffer()
 513 {
 514         recvq.clear();
 515 }
 516
 517 std::string User::GetBuffer()
 518 {
 519         try
 520         {
 521                 if (recvq.empty())
 522                         return "";
 523
 524                 /* Strip any leading \r or \n off the string.
 525                  * Usually there are only one or two of these,
 526                  * so its is computationally cheap to do.
 527                  */
 528                 std::string::iterator t = recvq.begin();
 529                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 530                 {
 531                         recvq.erase(t);
 532                         t = recvq.begin();
 533                 }
 534
 535                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 536                 {
 537                         /* Find the first complete line, return it as the
 538                          * result, and leave the recvq as whats left
 539                          */
 540                         if (*x == '\n')
 541                         {
 542                                 std::string ret = std::string(recvq.begin(), x);
 543                                 recvq.erase(recvq.begin(), x + 1);
 544                                 return ret;
 545                         }
 546                 }
 547                 return "";
 548         }
 549
 550         catch (...)
 551         {
 552                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 553                 return "";
 554         }
 555 }
 556
 557 void User::AddWriteBuf(const std::string &data)
 558 {
 559         if (*this->GetWriteError())
 560                 return;
 561
 562         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 563         {
 564                 /*
 565                  * Fix by brain - Set the error text BEFORE calling, because
 566                  * if we dont it'll recursively  call here over and over again trying
 567                  * to repeatedly add the text to the sendq!
 568                  */
 569                 this->SetWriteError("SendQ exceeded");
 570                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->MyClass->GetSendqMax());
 571                 return;
 572         }
 573
 574         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 575                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 576         else
 577                 sendq.append(data);
 578 }
 579
 580 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 581 void User::FlushWriteBuf()
 582 {
 583         try
 584         {
 585                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 586                 {
 587                         sendq.clear();
 588                 }
 589                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 590                 {
 591                         int old_sendq_length = sendq.length();
 592                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 593
 594                         if (n_sent == -1)
 595                         {
 596                                 if (errno == EAGAIN)
 597                                 {
 598                                         /* The socket buffer is full. This isnt fatal,
 599                                          * try again later.
 600                                          */
 601                                         this->ServerInstance->SE->WantWrite(this);
 602                                 }
 603                                 else
 604                                 {
 605                                         /* Fatal error, set write error and bail
 606                                          */
 607                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 608                                         return;
 609                                 }
 610                         }
 611                         else
 612                         {
 613                                 /* advance the queue */
 614                                 if (n_sent)
 615                                         this->sendq = this->sendq.substr(n_sent);
 616                                 /* update the user's stats counters */
 617                                 this->bytes_out += n_sent;
 618                                 this->cmds_out++;
 619                                 if (n_sent != old_sendq_length)
 620                                         this->ServerInstance->SE->WantWrite(this);
 621                         }
 622                 }
 623         }
 624
 625         catch (...)
 626         {
 627                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 628         }
 629
 630         if (this->sendq.empty())
 631         {
 632                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 633         }
 634 }
 635
 636 void User::SetWriteError(const std::string &error)
 637 {
 638         // don't try to set the error twice, its already set take the first string.
 639         if (this->WriteError.empty())
 640                 this->WriteError = error;
 641 }
 642
 643 const char* User::GetWriteError()
 644 {
 645         return this->WriteError.c_str();
 646 }
 647
 648 void User::Oper(const std::string &opertype, const std::string &opername)
 649 {
 650         char* mycmd;
 651         char* savept;
 652         char* savept2;
 653
 654         try
 655         {
 656                 this->modes[UM_OPERATOR] = 1;
 657                 this->WriteServ("MODE %s :+o", this->nick);
 658                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 659                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 660                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 661                 ServerInstance->Users->all_opers.push_back(this);
 662
 663                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 664                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 665                 {
 666
 667                         if (AllowedOperCommands)
 668                                 AllowedOperCommands->clear();
 669                         else
 670                                 AllowedOperCommands = new std::map<std::string, bool>;
 671
 672                         char* Classes = strdup(iter_opertype->second);
 673                         char* myclass = strtok_r(Classes," ",&savept);
 674                         while (myclass)
 675                         {
 676                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 677                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 678                                 {
 679                                         char* CommandList = strdup(iter_operclass->second);
 680                                         mycmd = strtok_r(CommandList," ",&savept2);
 681                                         while (mycmd)
 682                                         {
 683                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 684                                                 mycmd = strtok_r(NULL," ",&savept2);
 685                                         }
 686                                         free(CommandList);
 687                                 }
 688                                 myclass = strtok_r(NULL," ",&savept);
 689                         }
 690                         free(Classes);
 691                 }
 692
 693                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 694         }
 695
 696         catch (...)
 697         {
 698                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 699         }
 700 }
 701
 702 void User::UnOper()
 703 {
 704         if (IS_OPER(this))
 705         {
 706                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 707                 std::string moderemove("-");
 708
 709                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 710                 {
 711                         if (letter != 'o')
 712                         {
 713                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 714                                 if (mh && mh->NeedsOper())
 715                                         moderemove += letter;
 716                         }
 717                 }
 718
 719                 const char* parameters[] = { this->nick, moderemove.c_str() };
 720                 ServerInstance->Parser->CallHandler("MODE", parameters, 2, this);
 721
 722                 /* unset their oper type (what IS_OPER checks), and remove +o */
 723                 *this->oper = 0;
 724                 this->modes[UM_OPERATOR] = 0;
 725
 726                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 727                 ServerInstance->Users->all_opers.remove(this);
 728
 729                 if (AllowedOperCommands)
 730                 {
 731                         delete AllowedOperCommands;
 732                         AllowedOperCommands = NULL;
 733                 }
 734         }
 735 }
 736
 737 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 738 {
 739         Instance->Logs->Log("USERS", DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str());
 740         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str());
 741         user->quietquit = false;
 742         user->quitmsg = quitreason;
 743
 744         if (!*operreason)
 745                 user->operquitmsg = quitreason;
 746         else
 747                 user->operquitmsg = operreason;
 748
 749         Instance->GlobalCulls.AddItem(user);
 750 }
 751
 752 /* adds or updates an entry in the whowas list */
 753 void User::AddToWhoWas()
 754 {
 755         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 756         if (whowas_command)
 757         {
 758                 std::deque<classbase*> params;
 759                 params.push_back(this);
 760                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 761         }
 762 }
 763
 764 /*
 765  * Check class restrictions
 766  */
 767 void User::CheckClass()
 768 {
 769         ConnectClass* a = this->MyClass;
 770
 771         if ((!a) || (a->GetType() == CC_DENY))
 772         {
 773                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 774                 return;
 775         }
 776         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 777         {
 778                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 779                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 780                 return;
 781         }
 782         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 783         {
 784                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 785                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 786                 return;
 787         }
 788
 789         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 790         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 791         this->MaxChans = a->GetMaxChans();
 792 }
 793
 794 void User::FullConnect()
 795 {
 796         ServerInstance->stats->statsConnects++;
 797         this->idle_lastmsg = ServerInstance->Time();
 798
 799         /*
 800          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 801          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 802          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 803          * Don't remove this! -- w00t
 804          */
 805         this->SetClass();
 806
 807         /* Check the password, if one is required by the user's connect class.
 808          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 809          */
 810         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 811         {
 812                 User::QuitUser(ServerInstance, this, "Invalid password");
 813                 return;
 814         }
 815
 816         if (!this->exempt)
 817         {
 818                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 819
 820                 if (r)
 821                 {
 822                         r->Apply(this);
 823                         return;
 824                 }
 825
 826                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 827
 828                 if (n)
 829                 {
 830                         n->Apply(this);
 831                         return;
 832                 }
 833         }
 834
 835         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 836         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 837         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 838         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 839         this->WriteServ("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());
 840
 841         ServerInstance->Config->Send005(this);
 842
 843         this->WriteServ("042 %s %s :your unique ID", this->nick, this->uuid);
 844
 845
 846         this->ShowMOTD();
 847
 848         /* Now registered */
 849         if (ServerInstance->Users->unregistered_count)
 850                 ServerInstance->Users->unregistered_count--;
 851
 852         /* Trigger LUSERS output, give modules a chance too */
 853         int MOD_RESULT = 0;
 854         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 855         if (!MOD_RESULT)
 856                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 857
 858         /*
 859          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 860          * for a user that doesn't exist yet.
 861          */
 862         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 863
 864         this->registered = REG_ALL;
 865
 866         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 867
 868         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);
 869         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 870         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 871 }
 872
 873 /** User::UpdateNick()
 874  * re-allocates a nick in the user_hash after they change nicknames,
 875  * returns a pointer to the new user as it may have moved
 876  */
 877 User* User::UpdateNickHash(const char* New)
 878 {
 879         //user_hash::iterator newnick;
 880         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 881
 882         if (!strcasecmp(this->nick,New))
 883                 return oldnick->second;
 884
 885         if (oldnick == ServerInstance->Users->clientlist->end())
 886                 return NULL; /* doesnt exist */
 887
 888         User* olduser = oldnick->second;
 889         (*(ServerInstance->Users->clientlist))[New] = olduser;
 890         ServerInstance->Users->clientlist->erase(oldnick);
 891         return olduser;
 892 }
 893
 894 void User::InvalidateCache()
 895 {
 896         /* Invalidate cache */
 897         if (cached_fullhost)
 898                 free(cached_fullhost);
 899         if (cached_hostip)
 900                 free(cached_hostip);
 901         if (cached_makehost)
 902                 free(cached_makehost);
 903         if (cached_fullrealhost)
 904                 free(cached_fullrealhost);
 905         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 906 }
 907
 908 bool User::ForceNickChange(const char* newnick)
 909 {
 910         /*
 911          * XXX this makes no sense..
 912          * why do we do nothing for change on users not REG_ALL?
 913          * why do we trigger events twice for everyone previously (and just them now)
 914          * i think the first if () needs removing totally, or? -- w00t
 915          */
 916         if (this->registered != REG_ALL)
 917         {
 918                 int MOD_RESULT = 0;
 919
 920                 this->InvalidateCache();
 921
 922                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 923
 924                 if (MOD_RESULT)
 925                 {
 926                         ServerInstance->stats->statsCollisions++;
 927                         return false;
 928                 }
 929
 930                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
 931                 {
 932                         ServerInstance->stats->statsCollisions++;
 933                         return false;
 934                 }
 935         }
 936         else
 937         {
 938                 std::deque<classbase*> dummy;
 939                 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 940                 if (nickhandler) // wtfbbq, when would this not be here
 941                 {
 942                         nickhandler->HandleInternal(1, dummy);
 943                         bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
 944                         nickhandler->HandleInternal(0, dummy);
 945                         return result;
 946                 }
 947         }
 948
 949         // Unreachable.
 950         return false;
 951 }
 952
 953 void User::SetSockAddr(int protocol_family, const char* sip, int port)
 954 {
 955         this->cachedip = "";
 956
 957         switch (protocol_family)
 958         {
 959 #ifdef SUPPORT_IP6LINKS
 960                 case AF_INET6:
 961                 {
 962                         sockaddr_in6* sin = new sockaddr_in6;
 963                         sin->sin6_family = AF_INET6;
 964                         sin->sin6_port = port;
 965                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
 966                         this->ip = (sockaddr*)sin;
 967                 }
 968                 break;
 969 #endif
 970                 case AF_INET:
 971                 {
 972                         sockaddr_in* sin = new sockaddr_in;
 973                         sin->sin_family = AF_INET;
 974                         sin->sin_port = port;
 975                         inet_pton(AF_INET, sip, &sin->sin_addr);
 976                         this->ip = (sockaddr*)sin;
 977                 }
 978                 break;
 979                 default:
 980                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
 981                 break;
 982         }
 983 }
 984
 985 int User::GetPort()
 986 {
 987         if (this->ip == NULL)
 988                 return 0;
 989
 990         switch (this->GetProtocolFamily())
 991         {
 992 #ifdef SUPPORT_IP6LINKS
 993                 case AF_INET6:
 994                 {
 995                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
 996                         return sin->sin6_port;
 997                 }
 998                 break;
 999 #endif
1000                 case AF_INET:
1001                 {
1002                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1003                         return sin->sin_port;
1004                 }
1005                 break;
1006                 default:
1007                 break;
1008         }
1009         return 0;
1010 }
1011
1012 int User::GetProtocolFamily()
1013 {
1014         if (this->ip == NULL)
1015                 return 0;
1016
1017         sockaddr_in* sin = (sockaddr_in*)this->ip;
1018         return sin->sin_family;
1019 }
1020
1021 /*
1022  * XXX the duplication here is horrid..
1023  * do we really need two methods doing essentially the same thing?
1024  */
1025 const char* User::GetIPString()
1026 {
1027         static char buf[1024];
1028
1029         if (this->ip == NULL)
1030                 return "";
1031
1032         if (!this->cachedip.empty())
1033                 return this->cachedip.c_str();
1034
1035         switch (this->GetProtocolFamily())
1036         {
1037 #ifdef SUPPORT_IP6LINKS
1038                 case AF_INET6:
1039                 {
1040                         static char temp[1024];
1041
1042                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1043                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1044                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1045                         if (*buf == ':')
1046                         {
1047                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1048                                 *temp = '0';
1049                                 this->cachedip = temp;
1050                                 return temp;
1051                         }
1052
1053                         this->cachedip = buf;
1054                         return buf;
1055                 }
1056                 break;
1057 #endif
1058                 case AF_INET:
1059                 {
1060                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1061                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1062                         this->cachedip = buf;
1063                         return buf;
1064                 }
1065                 break;
1066                 default:
1067                 break;
1068         }
1069
1070         // Unreachable, probably
1071         return "";
1072 }
1073
1074 /** NOTE: We cannot pass a const reference to this method.
1075  * The string is changed by the workings of the method,
1076  * so that if we pass const ref, we end up copying it to
1077  * something we can change anyway. Makes sense to just let
1078  * the compiler do that copy for us.
1079  */
1080 void User::Write(std::string text)
1081 {
1082         if (!ServerInstance->SE->BoundsCheckFd(this))
1083                 return;
1084
1085         try
1086         {
1087                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1088                 text.append("\r\n");
1089         }
1090         catch (...)
1091         {
1092                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1093                 return;
1094         }
1095
1096         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1097         {
1098                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1099                  * implement their own buffering mechanisms
1100                  */
1101                 try
1102                 {
1103                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1104                 }
1105                 catch (CoreException& modexcept)
1106                 {
1107                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1108                 }
1109         }
1110         else
1111         {
1112                 this->AddWriteBuf(text);
1113         }
1114         ServerInstance->stats->statsSent += text.length();
1115         this->ServerInstance->SE->WantWrite(this);
1116 }
1117
1118 /** Write()
1119  */
1120 void User::Write(const char *text, ...)
1121 {
1122         va_list argsPtr;
1123         char textbuffer[MAXBUF];
1124
1125         va_start(argsPtr, text);
1126         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1127         va_end(argsPtr);
1128
1129         this->Write(std::string(textbuffer));
1130 }
1131
1132 void User::WriteServ(const std::string& text)
1133 {
1134         char textbuffer[MAXBUF];
1135
1136         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1137         this->Write(std::string(textbuffer));
1138 }
1139
1140 /** WriteServ()
1141  *  Same as Write(), except `text' is prefixed with `:server.name '.
1142  */
1143 void User::WriteServ(const char* text, ...)
1144 {
1145         va_list argsPtr;
1146         char textbuffer[MAXBUF];
1147
1148         va_start(argsPtr, text);
1149         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1150         va_end(argsPtr);
1151
1152         this->WriteServ(std::string(textbuffer));
1153 }
1154
1155
1156 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1157 {
1158         va_list argsPtr;
1159         char textbuffer[MAXBUF];
1160
1161         va_start(argsPtr, text);
1162         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1163         va_end(argsPtr);
1164
1165         this->WriteNumeric(numeric, std::string(textbuffer));
1166 }
1167
1168 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1169 {
1170         char textbuffer[MAXBUF];
1171         int MOD_RESULT = 0;
1172
1173         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1174
1175         if (MOD_RESULT)
1176                 return;
1177
1178         snprintf(textbuffer,MAXBUF,":%s %u %s %s",ServerInstance->Config->ServerName, numeric, this->nick, text.c_str());
1179         this->Write(std::string(textbuffer));
1180 }
1181
1182 void User::WriteFrom(User *user, const std::string &text)
1183 {
1184         char tb[MAXBUF];
1185
1186         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1187
1188         this->Write(std::string(tb));
1189 }
1190
1191
1192 /* write text from an originating user to originating user */
1193
1194 void User::WriteFrom(User *user, const char* text, ...)
1195 {
1196         va_list argsPtr;
1197         char textbuffer[MAXBUF];
1198
1199         va_start(argsPtr, text);
1200         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1201         va_end(argsPtr);
1202
1203         this->WriteFrom(user, std::string(textbuffer));
1204 }
1205
1206
1207 /* write text to an destination user from a source user (e.g. user privmsg) */
1208
1209 void User::WriteTo(User *dest, const char *data, ...)
1210 {
1211         char textbuffer[MAXBUF];
1212         va_list argsPtr;
1213
1214         va_start(argsPtr, data);
1215         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1216         va_end(argsPtr);
1217
1218         this->WriteTo(dest, std::string(textbuffer));
1219 }
1220
1221 void User::WriteTo(User *dest, const std::string &data)
1222 {
1223         dest->WriteFrom(this, data);
1224 }
1225
1226
1227 void User::WriteCommon(const char* text, ...)
1228 {
1229         char textbuffer[MAXBUF];
1230         va_list argsPtr;
1231
1232         if (this->registered != REG_ALL)
1233                 return;
1234
1235         va_start(argsPtr, text);
1236         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1237         va_end(argsPtr);
1238
1239         this->WriteCommon(std::string(textbuffer));
1240 }
1241
1242 void User::WriteCommon(const std::string &text)
1243 {
1244         bool sent_to_at_least_one = false;
1245         char tb[MAXBUF];
1246
1247         if (this->registered != REG_ALL)
1248                 return;
1249
1250         uniq_id++;
1251
1252         /* We dont want to be doing this n times, just once */
1253         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1254         std::string out = tb;
1255
1256         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1257         {
1258                 CUList* ulist = v->first->GetUsers();
1259                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1260                 {
1261                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1262                         {
1263                                 already_sent[i->first->fd] = uniq_id;
1264                                 i->first->Write(out);
1265                                 sent_to_at_least_one = true;
1266                         }
1267                 }
1268         }
1269
1270         /*
1271          * if the user was not in any channels, no users will receive the text. Make sure the user
1272          * receives their OWN message for WriteCommon
1273          */
1274         if (!sent_to_at_least_one)
1275         {
1276                 this->Write(std::string(tb));
1277         }
1278 }
1279
1280
1281 /* write a formatted string to all users who share at least one common
1282  * channel, NOT including the source user e.g. for use in QUIT
1283  */
1284
1285 void User::WriteCommonExcept(const char* text, ...)
1286 {
1287         char textbuffer[MAXBUF];
1288         va_list argsPtr;
1289
1290         va_start(argsPtr, text);
1291         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1292         va_end(argsPtr);
1293
1294         this->WriteCommonExcept(std::string(textbuffer));
1295 }
1296
1297 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1298 {
1299         char tb1[MAXBUF];
1300         char tb2[MAXBUF];
1301
1302         if (this->registered != REG_ALL)
1303                 return;
1304
1305         uniq_id++;
1306         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1307         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1308         std::string out1 = tb1;
1309         std::string out2 = tb2;
1310
1311         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1312         {
1313                 CUList *ulist = v->first->GetUsers();
1314                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1315                 {
1316                         if (this != i->first)
1317                         {
1318                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1319                                 {
1320                                         already_sent[i->first->fd] = uniq_id;
1321                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1322                                 }
1323                         }
1324                 }
1325         }
1326 }
1327
1328 void User::WriteCommonExcept(const std::string &text)
1329 {
1330         char tb1[MAXBUF];
1331         std::string out1;
1332
1333         if (this->registered != REG_ALL)
1334                 return;
1335
1336         uniq_id++;
1337         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1338         out1 = tb1;
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 (this != i->first)
1346                         {
1347                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1348                                 {
1349                                         already_sent[i->first->fd] = uniq_id;
1350                                         i->first->Write(out1);
1351                                 }
1352                         }
1353                 }
1354         }
1355
1356 }
1357
1358 void User::WriteWallOps(const std::string &text)
1359 {
1360         if (!IS_OPER(this) && IS_LOCAL(this))
1361                 return;
1362
1363         std::string wallop("WALLOPS :");
1364         wallop.append(text);
1365
1366         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1367         {
1368                 User* t = *i;
1369                 if (t->IsModeSet('w'))
1370                         this->WriteTo(t,wallop);
1371         }
1372 }
1373
1374 void User::WriteWallOps(const char* text, ...)
1375 {
1376         char textbuffer[MAXBUF];
1377         va_list argsPtr;
1378
1379         va_start(argsPtr, text);
1380         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1381         va_end(argsPtr);
1382
1383         this->WriteWallOps(std::string(textbuffer));
1384 }
1385
1386 /* return 0 or 1 depending if users u and u2 share one or more common channels
1387  * (used by QUIT, NICK etc which arent channel specific notices)
1388  *
1389  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1390  * the first users channels then the second users channels within the outer loop,
1391  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1392  * all possible iterations). However this new function instead checks against the
1393  * channel's userlist in the inner loop which is a std::map<User*,User*>
1394  * and saves us time as we already know what pointer value we are after.
1395  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1396  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1397  */
1398 bool User::SharesChannelWith(User *other)
1399 {
1400         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1401                 return false;
1402
1403         /* Outer loop */
1404         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1405         {
1406                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1407                  * by replacing it with a map::find which *should* be more efficient
1408                  */
1409                 if (i->first->HasUser(other))
1410                         return true;
1411         }
1412         return false;
1413 }
1414
1415 bool User::ChangeName(const char* gecos)
1416 {
1417         if (!strcmp(gecos, this->fullname))
1418                 return true;
1419
1420         if (IS_LOCAL(this))
1421         {
1422                 int MOD_RESULT = 0;
1423                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1424                 if (MOD_RESULT)
1425                         return false;
1426                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1427         }
1428         strlcpy(this->fullname,gecos,MAXGECOS+1);
1429
1430         return true;
1431 }
1432
1433 bool User::ChangeDisplayedHost(const char* shost)
1434 {
1435         if (!strcmp(shost, this->dhost))
1436                 return true;
1437
1438         if (IS_LOCAL(this))
1439         {
1440                 int MOD_RESULT = 0;
1441                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1442                 if (MOD_RESULT)
1443                         return false;
1444                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1445         }
1446
1447         if (this->ServerInstance->Config->CycleHosts)
1448                 this->WriteCommonExcept("QUIT :Changing hosts");
1449
1450         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1451         strlcpy(this->dhost,shost,64);
1452
1453         this->InvalidateCache();
1454
1455         if (this->ServerInstance->Config->CycleHosts)
1456         {
1457                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1458                 {
1459                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1460                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1461                         if (n.length() > 0)
1462                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1463                 }
1464         }
1465
1466         if (IS_LOCAL(this))
1467                 this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost);
1468
1469         return true;
1470 }
1471
1472 bool User::ChangeIdent(const char* newident)
1473 {
1474         if (!strcmp(newident, this->ident))
1475                 return true;
1476
1477         if (this->ServerInstance->Config->CycleHosts)
1478                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1479
1480         strlcpy(this->ident, newident, IDENTMAX+1);
1481
1482         this->InvalidateCache();
1483
1484         if (this->ServerInstance->Config->CycleHosts)
1485         {
1486                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1487                 {
1488                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1489                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1490                         if (n.length() > 0)
1491                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1492                 }
1493         }
1494
1495         return true;
1496 }
1497
1498 void User::SendAll(const char* command, const char* text, ...)
1499 {
1500         char textbuffer[MAXBUF];
1501         char formatbuffer[MAXBUF];
1502         va_list argsPtr;
1503
1504         va_start(argsPtr, text);
1505         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1506         va_end(argsPtr);
1507
1508         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1509         std::string fmt = formatbuffer;
1510
1511         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1512         {
1513                 (*i)->Write(fmt);
1514         }
1515 }
1516
1517
1518 std::string User::ChannelList(User* source)
1519 {
1520         std::string list;
1521
1522         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1523         {
1524                 /* If the target is the same as the sender, let them see all their channels.
1525                  * If the channel is NOT private/secret OR the user shares a common channel
1526                  * If the user is an oper, and the <options:operspywhois> option is set.
1527                  */
1528                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1529                 {
1530                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1531                 }
1532         }
1533
1534         return list;
1535 }
1536
1537 void User::SplitChanList(User* dest, const std::string &cl)
1538 {
1539         std::string line;
1540         std::ostringstream prefix;
1541         std::string::size_type start, pos, length;
1542
1543         prefix << this->nick << " " << dest->nick << " :";
1544         line = prefix.str();
1545         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1546
1547         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1548         {
1549                 length = (pos == std::string::npos) ? cl.length() : pos;
1550
1551                 if (line.length() + namelen + length - start > 510)
1552                 {
1553                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1554                         line = prefix.str();
1555                 }
1556
1557                 if(pos == std::string::npos)
1558                 {
1559                         line.append(cl.substr(start, length - start));
1560                         break;
1561                 }
1562                 else
1563                 {
1564                         line.append(cl.substr(start, length - start + 1));
1565                 }
1566         }
1567
1568         if (line.length())
1569         {
1570                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1571         }
1572 }
1573
1574 unsigned int User::GetMaxChans()
1575 {
1576         return this->MaxChans;
1577 }
1578
1579
1580 /*
1581  * Sets a user's connection class.
1582  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1583  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1584  * then their ip will be taken as 'priority' anyway, so for example,
1585  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1586  */
1587 ConnectClass* User::SetClass(const std::string &explicit_name)
1588 {
1589         ConnectClass *found = NULL;
1590
1591         if (!IS_LOCAL(this))
1592                 return NULL;
1593
1594         if (!explicit_name.empty())
1595         {
1596                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1597                 {
1598                         ConnectClass* c = *i;
1599
1600                         if (explicit_name == c->GetName() && !c->GetDisabled())
1601                         {
1602                                 found = c;
1603                         }
1604                 }
1605         }
1606         else
1607         {
1608                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1609                 {
1610                         ConnectClass* c = *i;
1611
1612                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1613                         {
1614                                 if (c->GetPort())
1615                                 {
1616                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1617                                         {
1618                                                 found = c;
1619                                         }
1620                                         else
1621                                                 continue;
1622                                 }
1623                                 else
1624                                 {
1625                                         if (!c->GetDisabled())
1626                                                 found = c;
1627                                 }
1628                         }
1629                 }
1630         }
1631
1632         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1633         if (found)
1634         {
1635                 /* deny change if change will take class over the limit */
1636                 if (found->limit && (found->RefCount + 1 >= found->limit))
1637                 {
1638                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%u) hit, denying", found->limit);
1639                         return this->MyClass;
1640                 }
1641
1642                 /* should always be valid, but just in case .. */
1643                 if (this->MyClass)
1644                 {
1645                         if (found == this->MyClass) // no point changing this shit :P
1646                                 return this->MyClass;
1647                         this->MyClass->RefCount--;
1648                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %u", this->MyClass->RefCount);
1649                 }
1650
1651                 this->MyClass = found;
1652                 this->MyClass->RefCount++;
1653                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %u", this->MyClass->RefCount);
1654         }
1655
1656         return this->MyClass;
1657 }
1658
1659 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1660  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1661  * then their ip will be taken as 'priority' anyway, so for example,
1662  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1663  */
1664 ConnectClass* User::GetClass()
1665 {
1666         return this->MyClass;
1667 }
1668
1669 void User::PurgeEmptyChannels()
1670 {
1671         std::vector<Channel*> to_delete;
1672
1673         // firstly decrement the count on each channel
1674         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1675         {
1676                 f->first->RemoveAllPrefixes(this);
1677                 if (f->first->DelUser(this) == 0)
1678                 {
1679                         /* No users left in here, mark it for deletion */
1680                         try
1681                         {
1682                                 to_delete.push_back(f->first);
1683                         }
1684                         catch (...)
1685                         {
1686                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1687                         }
1688                 }
1689         }
1690
1691         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1692         {
1693                 Channel* thischan = *n;
1694                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1695                 if (i2 != ServerInstance->chanlist->end())
1696                 {
1697                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1698                         delete i2->second;
1699                         ServerInstance->chanlist->erase(i2);
1700                         this->chans.erase(*n);
1701                 }
1702         }
1703
1704         this->UnOper();
1705 }
1706
1707 void User::ShowMOTD()
1708 {
1709         if (!ServerInstance->Config->MOTD.size())
1710         {
1711                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1712                 return;
1713         }
1714         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1715
1716         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1717                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
1718
1719         this->WriteServ("376 %s :End of message of the day.", this->nick);
1720 }
1721
1722 void User::ShowRULES()
1723 {
1724         if (!ServerInstance->Config->RULES.size())
1725         {
1726                 this->WriteServ("434 %s :RULES File is missing",this->nick);
1727                 return;
1728         }
1729
1730         this->WriteServ("308 %s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1731
1732         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1733                 this->WriteServ("232 %s :- %s",this->nick,i->c_str());
1734
1735         this->WriteServ("309 %s :End of RULES command.",this->nick);
1736 }
1737
1738 void User::HandleEvent(EventType et, int errornum)
1739 {
1740         if (this->quitting) // drop everything, user is due to be quit
1741                 return;
1742
1743         /* WARNING: May delete this user! */
1744         int thisfd = this->GetFd();
1745
1746         try
1747         {
1748                 switch (et)
1749                 {
1750                         case EVENT_READ:
1751                                 ServerInstance->ProcessUser(this);
1752                         break;
1753                         case EVENT_WRITE:
1754                                 this->FlushWriteBuf();
1755                         break;
1756                         case EVENT_ERROR:
1757                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1758                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1759                         break;
1760                 }
1761         }
1762         catch (...)
1763         {
1764                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1765         }
1766
1767         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1768         if ((ServerInstance->SE->GetRef(thisfd) == this))
1769         {
1770                 if (!WriteError.empty())
1771                 {
1772                         User::QuitUser(ServerInstance, this, GetWriteError());
1773                 }
1774         }
1775 }
1776
1777 void User::SetOperQuit(const std::string &oquit)
1778 {
1779         operquitmsg = oquit;
1780 }
1781
1782 const char* User::GetOperQuit()
1783 {
1784         return operquitmsg.c_str();
1785 }
1786
1787 void User::IncreasePenalty(int increase)
1788 {
1789         this->Penalty += increase;
1790 }
1791
1792 void User::DecreasePenalty(int decrease)
1793 {
1794         this->Penalty -= decrease;
1795 }
1796
1797 VisData::VisData()
1798 {
1799 }
1800
1801 VisData::~VisData()
1802 {
1803 }
1804
1805 bool VisData::VisibleTo(User* user)
1806 {
1807         return true;
1808 }
1809