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                                 oldadding = adding;
  77                         break;
  78                 }
  79
  80                 *c++;
  81         }
  82
  83         return output;
  84 }
  85
  86 void User::StartDNSLookup()
  87 {
  88         try
  89         {
  90                 bool cached;
  91                 const char* ip = this->GetIPString();
  92
  93                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
  94                 if (!strncmp(ip, "0::ffff:", 8))
  95                         res_reverse = new UserResolver(this->ServerInstance, this, ip + 8, DNS_QUERY_PTR4, cached);
  96                 else
  97                         res_reverse = new UserResolver(this->ServerInstance, this, ip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
  98
  99                 this->ServerInstance->AddResolver(res_reverse, cached);
 100         }
 101         catch (CoreException& e)
 102         {
 103                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 104         }
 105 }
 106
 107 bool User::IsNoticeMaskSet(unsigned char sm)
 108 {
 109         return (snomasks[sm-65]);
 110 }
 111
 112 void User::SetNoticeMask(unsigned char sm, bool value)
 113 {
 114         snomasks[sm-65] = value;
 115 }
 116
 117 const char* User::FormatNoticeMasks()
 118 {
 119         static char data[MAXBUF];
 120         int offset = 0;
 121
 122         for (int n = 0; n < 64; n++)
 123         {
 124                 if (snomasks[n])
 125                         data[offset++] = n+65;
 126         }
 127
 128         data[offset] = 0;
 129         return data;
 130 }
 131
 132
 133
 134 bool User::IsModeSet(unsigned char m)
 135 {
 136         return (modes[m-65]);
 137 }
 138
 139 void User::SetMode(unsigned char m, bool value)
 140 {
 141         modes[m-65] = value;
 142 }
 143
 144 const char* User::FormatModes()
 145 {
 146         static char data[MAXBUF];
 147         int offset = 0;
 148         for (int n = 0; n < 64; n++)
 149         {
 150                 if (modes[n])
 151                         data[offset++] = n+65;
 152         }
 153         data[offset] = 0;
 154         return data;
 155 }
 156
 157 void User::DecrementModes()
 158 {
 159         ServerInstance->Log(DEBUG,"DecrementModes()");
 160         for (unsigned char n = 'A'; n <= 'z'; n++)
 161         {
 162                 if (modes[n-65])
 163                 {
 164                         ServerInstance->Log(DEBUG,"DecrementModes() found mode %c", n);
 165                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 166                         if (mh)
 167                         {
 168                                 ServerInstance->Log(DEBUG,"Found handler %c and call ChangeCount", n);
 169                                 mh->ChangeCount(-1);
 170                         }
 171                 }
 172         }
 173 }
 174
 175 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 176 {
 177         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 178         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 179         reset_due = ServerInstance->Time();
 180         age = ServerInstance->Time(true);
 181         Penalty = 0;
 182         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 183         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 184         OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 185         fd = -1;
 186         recvq.clear();
 187         sendq.clear();
 188         WriteError.clear();
 189         res_forward = res_reverse = NULL;
 190         Visibility = NULL;
 191         ip = NULL;
 192         MyClass = NULL;
 193         AllowedOperCommands = NULL;
 194         chans.clear();
 195         invites.clear();
 196         memset(modes,0,sizeof(modes));
 197         memset(snomasks,0,sizeof(snomasks));
 198         /* Invalidate cache */
 199         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 200
 201         if (uid.empty())
 202                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 203         else
 204                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 205
 206         ServerInstance->Log(DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 207
 208         user_hash::iterator finduuid = Instance->uuidlist->find(uuid);
 209         if (finduuid == Instance->uuidlist->end())
 210                 (*Instance->uuidlist)[uuid] = this;
 211         else
 212                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 213 }
 214
 215 User::~User()
 216 {
 217         /* NULL for remote users :) */
 218         if (this->MyClass)
 219         {
 220                 this->MyClass->RefCount--;
 221                 ServerInstance->Log(DEBUG, "User destructor -- connect refcount now: %u", this->MyClass->RefCount);
 222         }
 223         if (this->AllowedOperCommands)
 224         {
 225                 delete AllowedOperCommands;
 226                 AllowedOperCommands = NULL;
 227         }
 228
 229         this->InvalidateCache();
 230         this->DecrementModes();
 231
 232         if (ip)
 233         {
 234                 ServerInstance->Users->RemoveCloneCounts(this);
 235
 236                 if (this->GetProtocolFamily() == AF_INET)
 237                 {
 238                         delete (sockaddr_in*)ip;
 239                 }
 240 #ifdef SUPPORT_IP6LINKS
 241                 else
 242                 {
 243                         delete (sockaddr_in6*)ip;
 244                 }
 245 #endif
 246         }
 247
 248         ServerInstance->uuidlist->erase(uuid);
 249 }
 250
 251 char* User::MakeHost()
 252 {
 253         if (this->cached_makehost)
 254                 return this->cached_makehost;
 255
 256         char nhost[MAXBUF];
 257         /* This is much faster than snprintf */
 258         char* t = nhost;
 259         for(char* n = ident; *n; n++)
 260                 *t++ = *n;
 261         *t++ = '@';
 262         for(char* n = host; *n; n++)
 263                 *t++ = *n;
 264         *t = 0;
 265
 266         this->cached_makehost = strdup(nhost);
 267
 268         return this->cached_makehost;
 269 }
 270
 271 char* User::MakeHostIP()
 272 {
 273         if (this->cached_hostip)
 274                 return this->cached_hostip;
 275
 276         char ihost[MAXBUF];
 277         /* This is much faster than snprintf */
 278         char* t = ihost;
 279         for(char* n = ident; *n; n++)
 280                 *t++ = *n;
 281         *t++ = '@';
 282         for(const char* n = this->GetIPString(); *n; n++)
 283                 *t++ = *n;
 284         *t = 0;
 285
 286         this->cached_hostip = strdup(ihost);
 287
 288         return this->cached_hostip;
 289 }
 290
 291 void User::CloseSocket()
 292 {
 293         ServerInstance->SE->Shutdown(this, 2);
 294         ServerInstance->SE->Close(this);
 295 }
 296
 297 char* User::GetFullHost()
 298 {
 299         if (this->cached_fullhost)
 300                 return this->cached_fullhost;
 301
 302         char result[MAXBUF];
 303         char* t = result;
 304         for(char* n = nick; *n; n++)
 305                 *t++ = *n;
 306         *t++ = '!';
 307         for(char* n = ident; *n; n++)
 308                 *t++ = *n;
 309         *t++ = '@';
 310         for(char* n = dhost; *n; n++)
 311                 *t++ = *n;
 312         *t = 0;
 313
 314         this->cached_fullhost = strdup(result);
 315
 316         return this->cached_fullhost;
 317 }
 318
 319 char* User::MakeWildHost()
 320 {
 321         static char nresult[MAXBUF];
 322         char* t = nresult;
 323         *t++ = '*';     *t++ = '!';
 324         *t++ = '*';     *t++ = '@';
 325         for(char* n = dhost; *n; n++)
 326                 *t++ = *n;
 327         *t = 0;
 328         return nresult;
 329 }
 330
 331 int User::ReadData(void* buffer, size_t size)
 332 {
 333         if (IS_LOCAL(this))
 334         {
 335 #ifndef WIN32
 336                 return read(this->fd, buffer, size);
 337 #else
 338                 return recv(this->fd, (char*)buffer, size, 0);
 339 #endif
 340         }
 341         else
 342                 return 0;
 343 }
 344
 345
 346 char* User::GetFullRealHost()
 347 {
 348         if (this->cached_fullrealhost)
 349                 return this->cached_fullrealhost;
 350
 351         char fresult[MAXBUF];
 352         char* t = fresult;
 353         for(char* n = nick; *n; n++)
 354                 *t++ = *n;
 355         *t++ = '!';
 356         for(char* n = ident; *n; n++)
 357                 *t++ = *n;
 358         *t++ = '@';
 359         for(char* n = host; *n; n++)
 360                 *t++ = *n;
 361         *t = 0;
 362
 363         this->cached_fullrealhost = strdup(fresult);
 364
 365         return this->cached_fullrealhost;
 366 }
 367
 368 bool User::IsInvited(const irc::string &channel)
 369 {
 370         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 371         {
 372                 if (channel == *i)
 373                 {
 374                         return true;
 375                 }
 376         }
 377         return false;
 378 }
 379
 380 InvitedList* User::GetInviteList()
 381 {
 382         return &invites;
 383 }
 384
 385 void User::InviteTo(const irc::string &channel)
 386 {
 387         invites.push_back(channel);
 388 }
 389
 390 void User::RemoveInvite(const irc::string &channel)
 391 {
 392         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 393         {
 394                 if (channel == *i)
 395                 {
 396                         invites.erase(i);
 397                         return;
 398                 }
 399         }
 400 }
 401
 402 bool User::HasPermission(const std::string &command)
 403 {
 404         /*
 405          * users on remote servers can completely bypass all permissions based checks.
 406          * This prevents desyncs when one server has different type/class tags to another.
 407          * That having been said, this does open things up to the possibility of source changes
 408          * allowing remote kills, etc - but if they have access to the src, they most likely have
 409          * access to the conf - so it's an end to a means either way.
 410          */
 411         if (!IS_LOCAL(this))
 412                 return true;
 413
 414         // are they even an oper at all?
 415         if (!IS_OPER(this))
 416         {
 417                 return false;
 418         }
 419
 420         if (!AllowedOperCommands)
 421                 return false;
 422
 423         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 424                 return true;
 425         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 426                 return true;
 427
 428         return false;
 429 }
 430
 431 /** NOTE: We cannot pass a const reference to this method.
 432  * The string is changed by the workings of the method,
 433  * so that if we pass const ref, we end up copying it to
 434  * something we can change anyway. Makes sense to just let
 435  * the compiler do that copy for us.
 436  */
 437 bool User::AddBuffer(std::string a)
 438 {
 439         try
 440         {
 441                 std::string::size_type i = a.rfind('\r');
 442
 443                 while (i != std::string::npos)
 444                 {
 445                         a.erase(i, 1);
 446                         i = a.rfind('\r');
 447                 }
 448
 449                 if (a.length())
 450                         recvq.append(a);
 451
 452                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 453                 {
 454                         this->SetWriteError("RecvQ exceeded");
 455                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->MyClass->GetRecvqMax());
 456                         return false;
 457                 }
 458
 459                 return true;
 460         }
 461
 462         catch (...)
 463         {
 464                 ServerInstance->Log(DEBUG,"Exception in User::AddBuffer()");
 465                 return false;
 466         }
 467 }
 468
 469 bool User::BufferIsReady()
 470 {
 471         return (recvq.find('\n') != std::string::npos);
 472 }
 473
 474 void User::ClearBuffer()
 475 {
 476         recvq.clear();
 477 }
 478
 479 std::string User::GetBuffer()
 480 {
 481         try
 482         {
 483                 if (recvq.empty())
 484                         return "";
 485
 486                 /* Strip any leading \r or \n off the string.
 487                  * Usually there are only one or two of these,
 488                  * so its is computationally cheap to do.
 489                  */
 490                 std::string::iterator t = recvq.begin();
 491                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 492                 {
 493                         recvq.erase(t);
 494                         t = recvq.begin();
 495                 }
 496
 497                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 498                 {
 499                         /* Find the first complete line, return it as the
 500                          * result, and leave the recvq as whats left
 501                          */
 502                         if (*x == '\n')
 503                         {
 504                                 std::string ret = std::string(recvq.begin(), x);
 505                                 recvq.erase(recvq.begin(), x + 1);
 506                                 return ret;
 507                         }
 508                 }
 509                 return "";
 510         }
 511
 512         catch (...)
 513         {
 514                 ServerInstance->Log(DEBUG,"Exception in User::GetBuffer()");
 515                 return "";
 516         }
 517 }
 518
 519 void User::AddWriteBuf(const std::string &data)
 520 {
 521         if (*this->GetWriteError())
 522                 return;
 523
 524         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 525         {
 526                 /*
 527                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 528                  * if we dont it'll recursively  call here over and over again trying
 529                  * to repeatedly add the text to the sendq!
 530                  */
 531                 this->SetWriteError("SendQ exceeded");
 532                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->MyClass->GetSendqMax());
 533                 return;
 534         }
 535
 536         try
 537         {
 538                 if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 539                         sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 540                 else
 541                         sendq.append(data);
 542         }
 543         catch (...)
 544         {
 545                 this->SetWriteError("SendQ exceeded");
 546                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 547         }
 548 }
 549
 550 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 551 void User::FlushWriteBuf()
 552 {
 553         try
 554         {
 555                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 556                 {
 557                         sendq.clear();
 558                 }
 559                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 560                 {
 561                         int old_sendq_length = sendq.length();
 562                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 563
 564                         if (n_sent == -1)
 565                         {
 566                                 if (errno == EAGAIN)
 567                                 {
 568                                         /* The socket buffer is full. This isnt fatal,
 569                                          * try again later.
 570                                          */
 571                                         this->ServerInstance->SE->WantWrite(this);
 572                                 }
 573                                 else
 574                                 {
 575                                         /* Fatal error, set write error and bail
 576                                          */
 577                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 578                                         return;
 579                                 }
 580                         }
 581                         else
 582                         {
 583                                 /* advance the queue */
 584                                 if (n_sent)
 585                                         this->sendq = this->sendq.substr(n_sent);
 586                                 /* update the user's stats counters */
 587                                 this->bytes_out += n_sent;
 588                                 this->cmds_out++;
 589                                 if (n_sent != old_sendq_length)
 590                                         this->ServerInstance->SE->WantWrite(this);
 591                         }
 592                 }
 593         }
 594
 595         catch (...)
 596         {
 597                 ServerInstance->Log(DEBUG,"Exception in User::FlushWriteBuf()");
 598         }
 599
 600         if (this->sendq.empty())
 601         {
 602                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 603         }
 604 }
 605
 606 void User::SetWriteError(const std::string &error)
 607 {
 608         try
 609         {
 610                 // don't try to set the error twice, its already set take the first string.
 611                 if (this->WriteError.empty())
 612                         this->WriteError = error;
 613         }
 614
 615         catch (...)
 616         {
 617                 ServerInstance->Log(DEBUG,"Exception in User::SetWriteError()");
 618         }
 619 }
 620
 621 const char* User::GetWriteError()
 622 {
 623         return this->WriteError.c_str();
 624 }
 625
 626 void User::Oper(const std::string &opertype, const std::string &opername)
 627 {
 628         char* mycmd;
 629         char* savept;
 630         char* savept2;
 631
 632         try
 633         {
 634                 this->modes[UM_OPERATOR] = 1;
 635                 this->WriteServ("MODE %s :+o", this->nick);
 636                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 637                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 638                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 639                 ServerInstance->all_opers.push_back(this);
 640
 641                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 642                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 643                 {
 644
 645                         if (AllowedOperCommands)
 646                                 AllowedOperCommands->clear();
 647                         else
 648                                 AllowedOperCommands = new std::map<std::string, bool>;
 649
 650                         char* Classes = strdup(iter_opertype->second);
 651                         char* myclass = strtok_r(Classes," ",&savept);
 652                         while (myclass)
 653                         {
 654                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 655                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 656                                 {
 657                                         char* CommandList = strdup(iter_operclass->second);
 658                                         mycmd = strtok_r(CommandList," ",&savept2);
 659                                         while (mycmd)
 660                                         {
 661                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 662                                                 mycmd = strtok_r(NULL," ",&savept2);
 663                                         }
 664                                         free(CommandList);
 665                                 }
 666                                 myclass = strtok_r(NULL," ",&savept);
 667                         }
 668                         free(Classes);
 669                 }
 670
 671                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 672         }
 673
 674         catch (...)
 675         {
 676                 ServerInstance->Log(DEBUG,"Exception in User::Oper()");
 677         }
 678 }
 679
 680 void User::UnOper()
 681 {
 682         try
 683         {
 684                 if (IS_OPER(this))
 685                 {
 686                         // unset their oper type (what IS_OPER checks), and remove +o
 687                         *this->oper = 0;
 688                         this->modes[UM_OPERATOR] = 0;
 689
 690                         // remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404
 691                         ServerInstance->all_opers.remove(this);
 692
 693                         if (AllowedOperCommands)
 694                         {
 695                                 delete AllowedOperCommands;
 696                                 AllowedOperCommands = NULL;
 697                         }
 698                 }
 699         }
 700
 701         catch (...)
 702         {
 703                 ServerInstance->Log(DEBUG,"Exception in User::UnOper()");
 704         }
 705 }
 706
 707 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 708 {
 709         Instance->Log(DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str());
 710         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str());
 711         user->quietquit = false;
 712         user->quitmsg = quitreason;
 713         user->operquitmsg = operreason;
 714         Instance->GlobalCulls.AddItem(user);
 715 }
 716
 717 /* adds or updates an entry in the whowas list */
 718 void User::AddToWhoWas()
 719 {
 720         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 721         if (whowas_command)
 722         {
 723                 std::deque<classbase*> params;
 724                 params.push_back(this);
 725                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 726         }
 727 }
 728
 729 /*
 730  * Check class restrictions
 731  */
 732 void User::CheckClass()
 733 {
 734         ConnectClass* a = this->MyClass;
 735
 736         if ((!a) || (a->GetType() == CC_DENY))
 737         {
 738                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 739                 return;
 740         }
 741         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 742         {
 743                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 744                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 745                 return;
 746         }
 747         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 748         {
 749                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 750                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 751                 return;
 752         }
 753
 754         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 755         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 756         this->MaxChans = a->GetMaxChans();
 757 }
 758
 759 void User::FullConnect()
 760 {
 761         ServerInstance->stats->statsConnects++;
 762         this->idle_lastmsg = ServerInstance->Time();
 763
 764         /*
 765          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 766          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 767          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 768          * Don't remove this! -- w00t
 769          */
 770         this->SetClass();
 771
 772         /* Check the password, if one is required by the user's connect class.
 773          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 774          */
 775         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 776         {
 777                 User::QuitUser(ServerInstance, this, "Invalid password");
 778                 return;
 779         }
 780
 781         if (!this->exempt)
 782         {
 783                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 784
 785                 if (r)
 786                 {
 787                         r->Apply(this);
 788                         return;
 789                 }
 790
 791                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 792
 793                 if (n)
 794                 {
 795                         n->Apply(this);
 796                         return;
 797                 }
 798         }
 799
 800         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 801         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 802         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 803         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 804         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());
 805
 806         ServerInstance->Config->Send005(this);
 807
 808         this->WriteServ("042 %s %s :your unique ID", this->nick, this->uuid);
 809
 810
 811         this->ShowMOTD();
 812
 813         /* Now registered */
 814         if (ServerInstance->unregistered_count)
 815                 ServerInstance->unregistered_count--;
 816
 817         /* Trigger LUSERS output, give modules a chance too */
 818         int MOD_RESULT = 0;
 819         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 820         if (!MOD_RESULT)
 821                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 822
 823         /*
 824          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 825          * for a user that doesn't exist yet.
 826          */
 827         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 828
 829         this->registered = REG_ALL;
 830
 831         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 832
 833         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);
 834
 835         ServerInstance->Log(DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 836         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 837 }
 838
 839 /** User::UpdateNick()
 840  * re-allocates a nick in the user_hash after they change nicknames,
 841  * returns a pointer to the new user as it may have moved
 842  */
 843 User* User::UpdateNickHash(const char* New)
 844 {
 845         try
 846         {
 847                 //user_hash::iterator newnick;
 848                 user_hash::iterator oldnick = ServerInstance->clientlist->find(this->nick);
 849
 850                 if (!strcasecmp(this->nick,New))
 851                         return oldnick->second;
 852
 853                 if (oldnick == ServerInstance->clientlist->end())
 854                         return NULL; /* doesnt exist */
 855
 856                 User* olduser = oldnick->second;
 857                 (*(ServerInstance->clientlist))[New] = olduser;
 858                 ServerInstance->clientlist->erase(oldnick);
 859                 return olduser;
 860         }
 861
 862         catch (...)
 863         {
 864                 ServerInstance->Log(DEBUG,"Exception in User::UpdateNickHash()");
 865                 return NULL;
 866         }
 867 }
 868
 869 void User::InvalidateCache()
 870 {
 871         /* Invalidate cache */
 872         if (cached_fullhost)
 873                 free(cached_fullhost);
 874         if (cached_hostip)
 875                 free(cached_hostip);
 876         if (cached_makehost)
 877                 free(cached_makehost);
 878         if (cached_fullrealhost)
 879                 free(cached_fullrealhost);
 880         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 881 }
 882
 883 bool User::ForceNickChange(const char* newnick)
 884 {
 885         try
 886         {
 887                 int MOD_RESULT = 0;
 888
 889                 this->InvalidateCache();
 890
 891                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 892
 893                 if (MOD_RESULT)
 894                 {
 895                         ServerInstance->stats->statsCollisions++;
 896                         return false;
 897                 }
 898
 899                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
 900                 {
 901                         ServerInstance->stats->statsCollisions++;
 902                         return false;
 903                 }
 904
 905                 if (this->registered == REG_ALL)
 906                 {
 907                         std::deque<classbase*> dummy;
 908                         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 909                         if (nickhandler)
 910                         {
 911                                 nickhandler->HandleInternal(1, dummy);
 912                                 bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
 913                                 nickhandler->HandleInternal(0, dummy);
 914                                 return result;
 915                         }
 916                 }
 917                 return false;
 918         }
 919
 920         catch (...)
 921         {
 922                 ServerInstance->Log(DEBUG,"Exception in User::ForceNickChange()");
 923                 return false;
 924         }
 925 }
 926
 927 void User::SetSockAddr(int protocol_family, const char* ip, int port)
 928 {
 929         switch (protocol_family)
 930         {
 931 #ifdef SUPPORT_IP6LINKS
 932                 case AF_INET6:
 933                 {
 934                         sockaddr_in6* sin = new sockaddr_in6;
 935                         sin->sin6_family = AF_INET6;
 936                         sin->sin6_port = port;
 937                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
 938                         this->ip = (sockaddr*)sin;
 939                 }
 940                 break;
 941 #endif
 942                 case AF_INET:
 943                 {
 944                         sockaddr_in* sin = new sockaddr_in;
 945                         sin->sin_family = AF_INET;
 946                         sin->sin_port = port;
 947                         inet_pton(AF_INET, ip, &sin->sin_addr);
 948                         this->ip = (sockaddr*)sin;
 949                 }
 950                 break;
 951                 default:
 952                         ServerInstance->Log(DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
 953                 break;
 954         }
 955 }
 956
 957 int User::GetPort()
 958 {
 959         if (this->ip == NULL)
 960                 return 0;
 961
 962         switch (this->GetProtocolFamily())
 963         {
 964 #ifdef SUPPORT_IP6LINKS
 965                 case AF_INET6:
 966                 {
 967                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
 968                         return sin->sin6_port;
 969                 }
 970                 break;
 971 #endif
 972                 case AF_INET:
 973                 {
 974                         sockaddr_in* sin = (sockaddr_in*)this->ip;
 975                         return sin->sin_port;
 976                 }
 977                 break;
 978                 default:
 979                 break;
 980         }
 981         return 0;
 982 }
 983
 984 int User::GetProtocolFamily()
 985 {
 986         if (this->ip == NULL)
 987                 return 0;
 988
 989         sockaddr_in* sin = (sockaddr_in*)this->ip;
 990         return sin->sin_family;
 991 }
 992
 993 /*
 994  * XXX the duplication here is horrid..
 995  * do we really need two methods doing essentially the same thing?
 996  */
 997 const char* User::GetIPString()
 998 {
 999         static char buf[1024];
1000
1001         if (this->ip == NULL)
1002                 return "";
1003
1004         switch (this->GetProtocolFamily())
1005         {
1006 #ifdef SUPPORT_IP6LINKS
1007                 case AF_INET6:
1008                 {
1009                         static char temp[1024];
1010
1011                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1012                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1013                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1014                         if (*buf == ':')
1015                         {
1016                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1017                                 *temp = '0';
1018                                 return temp;
1019                         }
1020                         return buf;
1021                 }
1022                 break;
1023 #endif
1024                 case AF_INET:
1025                 {
1026                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1027                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1028                         return buf;
1029                 }
1030                 break;
1031                 default:
1032                 break;
1033         }
1034         return "";
1035 }
1036
1037 /** NOTE: We cannot pass a const reference to this method.
1038  * The string is changed by the workings of the method,
1039  * so that if we pass const ref, we end up copying it to
1040  * something we can change anyway. Makes sense to just let
1041  * the compiler do that copy for us.
1042  */
1043 void User::Write(std::string text)
1044 {
1045         if (!ServerInstance->SE->BoundsCheckFd(this))
1046                 return;
1047
1048         try
1049         {
1050                 /* ServerInstance->Log(DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1051                  * WARNING: The above debug line is VERY loud, do NOT
1052                  * enable it till we have a good way of filtering it
1053                  * out of the logs (e.g. 1.2 would be good).
1054                  */
1055                 text.append("\r\n");
1056         }
1057         catch (...)
1058         {
1059                 ServerInstance->Log(DEBUG,"Exception in User::Write() std::string::append");
1060                 return;
1061         }
1062
1063         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1064         {
1065                 try
1066                 {
1067                         /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1068                          * implement their own buffering mechanisms
1069                          */
1070                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1071                 }
1072                 catch (CoreException& modexcept)
1073                 {
1074                         ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1075                 }
1076         }
1077         else
1078         {
1079                 this->AddWriteBuf(text);
1080         }
1081         ServerInstance->stats->statsSent += text.length();
1082         this->ServerInstance->SE->WantWrite(this);
1083 }
1084
1085 /** Write()
1086  */
1087 void User::Write(const char *text, ...)
1088 {
1089         va_list argsPtr;
1090         char textbuffer[MAXBUF];
1091
1092         va_start(argsPtr, text);
1093         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1094         va_end(argsPtr);
1095
1096         this->Write(std::string(textbuffer));
1097 }
1098
1099 void User::WriteServ(const std::string& text)
1100 {
1101         char textbuffer[MAXBUF];
1102
1103         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1104         this->Write(std::string(textbuffer));
1105 }
1106
1107 /** WriteServ()
1108  *  Same as Write(), except `text' is prefixed with `:server.name '.
1109  */
1110 void User::WriteServ(const char* text, ...)
1111 {
1112         va_list argsPtr;
1113         char textbuffer[MAXBUF];
1114
1115         va_start(argsPtr, text);
1116         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1117         va_end(argsPtr);
1118
1119         this->WriteServ(std::string(textbuffer));
1120 }
1121
1122
1123 void User::WriteFrom(User *user, const std::string &text)
1124 {
1125         char tb[MAXBUF];
1126
1127         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1128
1129         this->Write(std::string(tb));
1130 }
1131
1132
1133 /* write text from an originating user to originating user */
1134
1135 void User::WriteFrom(User *user, const char* text, ...)
1136 {
1137         va_list argsPtr;
1138         char textbuffer[MAXBUF];
1139
1140         va_start(argsPtr, text);
1141         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1142         va_end(argsPtr);
1143
1144         this->WriteFrom(user, std::string(textbuffer));
1145 }
1146
1147
1148 /* write text to an destination user from a source user (e.g. user privmsg) */
1149
1150 void User::WriteTo(User *dest, const char *data, ...)
1151 {
1152         char textbuffer[MAXBUF];
1153         va_list argsPtr;
1154
1155         va_start(argsPtr, data);
1156         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1157         va_end(argsPtr);
1158
1159         this->WriteTo(dest, std::string(textbuffer));
1160 }
1161
1162 void User::WriteTo(User *dest, const std::string &data)
1163 {
1164         dest->WriteFrom(this, data);
1165 }
1166
1167
1168 void User::WriteCommon(const char* text, ...)
1169 {
1170         char textbuffer[MAXBUF];
1171         va_list argsPtr;
1172
1173         if (this->registered != REG_ALL)
1174                 return;
1175
1176         va_start(argsPtr, text);
1177         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1178         va_end(argsPtr);
1179
1180         this->WriteCommon(std::string(textbuffer));
1181 }
1182
1183 void User::WriteCommon(const std::string &text)
1184 {
1185         try
1186         {
1187                 bool sent_to_at_least_one = false;
1188                 char tb[MAXBUF];
1189
1190                 if (this->registered != REG_ALL)
1191                         return;
1192
1193                 uniq_id++;
1194
1195                 /* We dont want to be doing this n times, just once */
1196                 snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1197                 std::string out = tb;
1198
1199                 for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1200                 {
1201                         CUList* ulist = v->first->GetUsers();
1202                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1203                         {
1204                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1205                                 {
1206                                         already_sent[i->first->fd] = uniq_id;
1207                                         i->first->Write(out);
1208                                         sent_to_at_least_one = true;
1209                                 }
1210                         }
1211                 }
1212
1213                 /*
1214                  * if the user was not in any channels, no users will receive the text. Make sure the user
1215                  * receives their OWN message for WriteCommon
1216                  */
1217                 if (!sent_to_at_least_one)
1218                 {
1219                         this->Write(std::string(tb));
1220                 }
1221         }
1222
1223         catch (...)
1224         {
1225                 ServerInstance->Log(DEBUG,"Exception in User::WriteCommon()");
1226         }
1227 }
1228
1229
1230 /* write a formatted string to all users who share at least one common
1231  * channel, NOT including the source user e.g. for use in QUIT
1232  */
1233
1234 void User::WriteCommonExcept(const char* text, ...)
1235 {
1236         char textbuffer[MAXBUF];
1237         va_list argsPtr;
1238
1239         va_start(argsPtr, text);
1240         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1241         va_end(argsPtr);
1242
1243         this->WriteCommonExcept(std::string(textbuffer));
1244 }
1245
1246 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1247 {
1248         char tb1[MAXBUF];
1249         char tb2[MAXBUF];
1250
1251         if (this->registered != REG_ALL)
1252                 return;
1253
1254         uniq_id++;
1255         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1256         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1257         std::string out1 = tb1;
1258         std::string out2 = tb2;
1259
1260         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1261         {
1262                 CUList *ulist = v->first->GetUsers();
1263                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1264                 {
1265                         if (this != i->first)
1266                         {
1267                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1268                                 {
1269                                         already_sent[i->first->fd] = uniq_id;
1270                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1271                                 }
1272                         }
1273                 }
1274         }
1275 }
1276
1277 void User::WriteCommonExcept(const std::string &text)
1278 {
1279         char tb1[MAXBUF];
1280         std::string out1;
1281
1282         if (this->registered != REG_ALL)
1283                 return;
1284
1285         uniq_id++;
1286         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1287         out1 = tb1;
1288
1289         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1290         {
1291                 CUList *ulist = v->first->GetUsers();
1292                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1293                 {
1294                         if (this != i->first)
1295                         {
1296                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1297                                 {
1298                                         already_sent[i->first->fd] = uniq_id;
1299                                         i->first->Write(out1);
1300                                 }
1301                         }
1302                 }
1303         }
1304
1305 }
1306
1307 void User::WriteWallOps(const std::string &text)
1308 {
1309         if (!IS_OPER(this) && IS_LOCAL(this))
1310                 return;
1311
1312         std::string wallop("WALLOPS :");
1313         wallop.append(text);
1314
1315         for (std::vector<User*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1316         {
1317                 User* t = *i;
1318                 if (t->IsModeSet('w'))
1319                         this->WriteTo(t,wallop);
1320         }
1321 }
1322
1323 void User::WriteWallOps(const char* text, ...)
1324 {
1325         char textbuffer[MAXBUF];
1326         va_list argsPtr;
1327
1328         va_start(argsPtr, text);
1329         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1330         va_end(argsPtr);
1331
1332         this->WriteWallOps(std::string(textbuffer));
1333 }
1334
1335 /* return 0 or 1 depending if users u and u2 share one or more common channels
1336  * (used by QUIT, NICK etc which arent channel specific notices)
1337  *
1338  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1339  * the first users channels then the second users channels within the outer loop,
1340  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1341  * all possible iterations). However this new function instead checks against the
1342  * channel's userlist in the inner loop which is a std::map<User*,User*>
1343  * and saves us time as we already know what pointer value we are after.
1344  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1345  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1346  */
1347 bool User::SharesChannelWith(User *other)
1348 {
1349         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1350                 return false;
1351
1352         /* Outer loop */
1353         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1354         {
1355                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1356                  * by replacing it with a map::find which *should* be more efficient
1357                  */
1358                 if (i->first->HasUser(other))
1359                         return true;
1360         }
1361         return false;
1362 }
1363
1364 bool User::ChangeName(const char* gecos)
1365 {
1366         if (!strcmp(gecos, this->fullname))
1367                 return true;
1368
1369         if (IS_LOCAL(this))
1370         {
1371                 int MOD_RESULT = 0;
1372                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1373                 if (MOD_RESULT)
1374                         return false;
1375                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1376         }
1377         strlcpy(this->fullname,gecos,MAXGECOS+1);
1378
1379         return true;
1380 }
1381
1382 bool User::ChangeDisplayedHost(const char* host)
1383 {
1384         if (!strcmp(host, this->dhost))
1385                 return true;
1386
1387         if (IS_LOCAL(this))
1388         {
1389                 int MOD_RESULT = 0;
1390                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1391                 if (MOD_RESULT)
1392                         return false;
1393                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1394         }
1395         if (this->ServerInstance->Config->CycleHosts)
1396                 this->WriteCommonExcept("QUIT :Changing hosts");
1397
1398         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1399         strlcpy(this->dhost,host,64);
1400
1401         this->InvalidateCache();
1402
1403         if (this->ServerInstance->Config->CycleHosts)
1404         {
1405                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1406                 {
1407                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1408                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1409                         if (n.length() > 0)
1410                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1411                 }
1412         }
1413
1414         if (IS_LOCAL(this))
1415                 this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost);
1416
1417         return true;
1418 }
1419
1420 bool User::ChangeIdent(const char* newident)
1421 {
1422         if (!strcmp(newident, this->ident))
1423                 return true;
1424
1425         if (this->ServerInstance->Config->CycleHosts)
1426                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1427
1428         strlcpy(this->ident, newident, IDENTMAX+2);
1429
1430         this->InvalidateCache();
1431
1432         if (this->ServerInstance->Config->CycleHosts)
1433         {
1434                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1435                 {
1436                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1437                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1438                         if (n.length() > 0)
1439                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1440                 }
1441         }
1442
1443         return true;
1444 }
1445
1446 void User::SendAll(const char* command, char* text, ...)
1447 {
1448         char textbuffer[MAXBUF];
1449         char formatbuffer[MAXBUF];
1450         va_list argsPtr;
1451
1452         va_start(argsPtr, text);
1453         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1454         va_end(argsPtr);
1455
1456         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1457         std::string fmt = formatbuffer;
1458
1459         for (std::vector<User*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1460         {
1461                 (*i)->Write(fmt);
1462         }
1463 }
1464
1465
1466 std::string User::ChannelList(User* source)
1467 {
1468         try
1469         {
1470                 std::string list;
1471                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1472                 {
1473                         /* If the target is the same as the sender, let them see all their channels.
1474                          * If the channel is NOT private/secret OR the user shares a common channel
1475                          * If the user is an oper, and the <options:operspywhois> option is set.
1476                          */
1477                         if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1478                         {
1479                                 list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1480                         }
1481                 }
1482                 return list;
1483         }
1484         catch (...)
1485         {
1486                 ServerInstance->Log(DEBUG,"Exception in User::ChannelList()");
1487                 return "";
1488         }
1489 }
1490
1491 void User::SplitChanList(User* dest, const std::string &cl)
1492 {
1493         std::string line;
1494         std::ostringstream prefix;
1495         std::string::size_type start, pos, length;
1496
1497         try
1498         {
1499                 prefix << this->nick << " " << dest->nick << " :";
1500                 line = prefix.str();
1501                 int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1502
1503                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1504                 {
1505                         length = (pos == std::string::npos) ? cl.length() : pos;
1506
1507                         if (line.length() + namelen + length - start > 510)
1508                         {
1509                                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1510                                 line = prefix.str();
1511                         }
1512
1513                         if(pos == std::string::npos)
1514                         {
1515                                 line.append(cl.substr(start, length - start));
1516                                 break;
1517                         }
1518                         else
1519                         {
1520                                 line.append(cl.substr(start, length - start + 1));
1521                         }
1522                 }
1523
1524                 if (line.length())
1525                 {
1526                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1527                 }
1528         }
1529
1530         catch (...)
1531         {
1532                 ServerInstance->Log(DEBUG,"Exception in User::SplitChanList()");
1533         }
1534 }
1535
1536 unsigned int User::GetMaxChans()
1537 {
1538         return this->MaxChans;
1539 }
1540
1541
1542 /*
1543  * Sets a user's connection class.
1544  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1545  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1546  * then their ip will be taken as 'priority' anyway, so for example,
1547  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1548  */
1549 ConnectClass* User::SetClass(const std::string &explicit_name)
1550 {
1551         ConnectClass *found = NULL;
1552
1553         if (!IS_LOCAL(this))
1554                 return NULL;
1555
1556         if (!explicit_name.empty())
1557         {
1558                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1559                 {
1560                         ConnectClass* c = *i;
1561
1562                         if (explicit_name == c->GetName() && !c->GetDisabled())
1563                         {
1564                                 found = c;
1565                         }
1566                 }
1567         }
1568         else
1569         {
1570                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1571                 {
1572                         ConnectClass* c = *i;
1573
1574                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1575                         {
1576                                 if (c->GetPort())
1577                                 {
1578                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1579                                         {
1580                                                 found = c;
1581                                         }
1582                                         else
1583                                                 continue;
1584                                 }
1585                                 else
1586                                 {
1587                                         if (!c->GetDisabled())
1588                                                 found = c;
1589                                 }
1590                         }
1591                 }
1592         }
1593
1594         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1595         if (found)
1596         {
1597                 /* deny change if change will take class over the limit */
1598                 if (found->limit && (found->RefCount + 1 >= found->limit))
1599                 {
1600                         ServerInstance->Log(DEBUG, "OOPS: Connect class limit (%u) hit, denying", found->limit);
1601                         return this->MyClass;
1602                 }
1603
1604                 /* should always be valid, but just in case .. */
1605                 if (this->MyClass)
1606                 {
1607                         if (found == this->MyClass) // no point changing this shit :P
1608                                 return this->MyClass;
1609                         this->MyClass->RefCount--;
1610                         ServerInstance->Log(DEBUG, "Untying user from connect class -- refcount: %u", this->MyClass->RefCount);
1611                 }
1612
1613                 this->MyClass = found;
1614                 this->MyClass->RefCount++;
1615                 ServerInstance->Log(DEBUG, "User tied to new class -- connect refcount now: %u", this->MyClass->RefCount);
1616         }
1617
1618         return this->MyClass;
1619 }
1620
1621 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1622  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1623  * then their ip will be taken as 'priority' anyway, so for example,
1624  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1625  */
1626 ConnectClass* User::GetClass()
1627 {
1628         return this->MyClass;
1629 }
1630
1631 void User::PurgeEmptyChannels()
1632 {
1633         std::vector<Channel*> to_delete;
1634
1635         // firstly decrement the count on each channel
1636         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1637         {
1638                 f->first->RemoveAllPrefixes(this);
1639                 if (f->first->DelUser(this) == 0)
1640                 {
1641                         /* No users left in here, mark it for deletion */
1642                         try
1643                         {
1644                                 to_delete.push_back(f->first);
1645                         }
1646                         catch (...)
1647                         {
1648                                 ServerInstance->Log(DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1649                         }
1650                 }
1651         }
1652
1653         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1654         {
1655                 Channel* thischan = *n;
1656                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1657                 if (i2 != ServerInstance->chanlist->end())
1658                 {
1659                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1660                         delete i2->second;
1661                         ServerInstance->chanlist->erase(i2);
1662                         this->chans.erase(*n);
1663                 }
1664         }
1665
1666         this->UnOper();
1667 }
1668
1669 void User::ShowMOTD()
1670 {
1671         if (!ServerInstance->Config->MOTD.size())
1672         {
1673                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1674                 return;
1675         }
1676         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1677
1678         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1679                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
1680
1681         this->WriteServ("376 %s :End of message of the day.", this->nick);
1682 }
1683
1684 void User::ShowRULES()
1685 {
1686         if (!ServerInstance->Config->RULES.size())
1687         {
1688                 this->WriteServ("434 %s :RULES File is missing",this->nick);
1689                 return;
1690         }
1691
1692         this->WriteServ("308 %s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1693
1694         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1695                 this->WriteServ("232 %s :- %s",this->nick,i->c_str());
1696
1697         this->WriteServ("309 %s :End of RULES command.",this->nick);
1698 }
1699
1700 void User::HandleEvent(EventType et, int errornum)
1701 {
1702         if (this->quitting) // drop everything, user is due to be quit
1703                 return;
1704
1705         /* WARNING: May delete this user! */
1706         int thisfd = this->GetFd();
1707
1708         try
1709         {
1710                 switch (et)
1711                 {
1712                         case EVENT_READ:
1713                                 ServerInstance->ProcessUser(this);
1714                         break;
1715                         case EVENT_WRITE:
1716                                 this->FlushWriteBuf();
1717                         break;
1718                         case EVENT_ERROR:
1719                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1720                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1721                         break;
1722                 }
1723         }
1724         catch (...)
1725         {
1726                 ServerInstance->Log(DEBUG,"Exception in User::HandleEvent intercepted");
1727         }
1728
1729         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1730         if ((ServerInstance->SE->GetRef(thisfd) == this))
1731         {
1732                 if (!WriteError.empty())
1733                 {
1734                         User::QuitUser(ServerInstance, this, GetWriteError());
1735                 }
1736         }
1737 }
1738
1739 void User::SetOperQuit(const std::string &oquit)
1740 {
1741         operquitmsg = oquit;
1742 }
1743
1744 const char* User::GetOperQuit()
1745 {
1746         return operquitmsg.c_str();
1747 }
1748
1749 void User::IncreasePenalty(int increase)
1750 {
1751         this->Penalty += increase;
1752 }
1753
1754 void User::DecreasePenalty(int decrease)
1755 {
1756         this->Penalty -= decrease;
1757 }
1758
1759 VisData::VisData()
1760 {
1761 }
1762
1763 VisData::~VisData()
1764 {
1765 }
1766
1767 bool VisData::VisibleTo(User* user)
1768 {
1769         return true;
1770 }
1771