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 = muted = 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->muted = true;
 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                         this->muted = true;
 788                         r->Apply(this);
 789                         return;
 790                 }
 791
 792                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 793
 794                 if (n)
 795                 {
 796                         this->muted = true;
 797                         n->Apply(this);
 798                         return;
 799                 }
 800         }
 801
 802         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 803         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 804         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 805         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 806         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());
 807
 808         ServerInstance->Config->Send005(this);
 809
 810         this->WriteServ("042 %s %s :your unique ID", this->nick, this->uuid);
 811
 812
 813         this->ShowMOTD();
 814
 815         /* Now registered */
 816         if (ServerInstance->unregistered_count)
 817                 ServerInstance->unregistered_count--;
 818
 819         /* Trigger LUSERS output, give modules a chance too */
 820         int MOD_RESULT = 0;
 821         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 822         if (!MOD_RESULT)
 823                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 824
 825         /*
 826          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 827          * for a user that doesn't exist yet.
 828          */
 829         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 830
 831         this->registered = REG_ALL;
 832
 833         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 834
 835         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);
 836
 837         ServerInstance->Log(DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 838         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 839 }
 840
 841 /** User::UpdateNick()
 842  * re-allocates a nick in the user_hash after they change nicknames,
 843  * returns a pointer to the new user as it may have moved
 844  */
 845 User* User::UpdateNickHash(const char* New)
 846 {
 847         try
 848         {
 849                 //user_hash::iterator newnick;
 850                 user_hash::iterator oldnick = ServerInstance->clientlist->find(this->nick);
 851
 852                 if (!strcasecmp(this->nick,New))
 853                         return oldnick->second;
 854
 855                 if (oldnick == ServerInstance->clientlist->end())
 856                         return NULL; /* doesnt exist */
 857
 858                 User* olduser = oldnick->second;
 859                 (*(ServerInstance->clientlist))[New] = olduser;
 860                 ServerInstance->clientlist->erase(oldnick);
 861                 return olduser;
 862         }
 863
 864         catch (...)
 865         {
 866                 ServerInstance->Log(DEBUG,"Exception in User::UpdateNickHash()");
 867                 return NULL;
 868         }
 869 }
 870
 871 void User::InvalidateCache()
 872 {
 873         /* Invalidate cache */
 874         if (cached_fullhost)
 875                 free(cached_fullhost);
 876         if (cached_hostip)
 877                 free(cached_hostip);
 878         if (cached_makehost)
 879                 free(cached_makehost);
 880         if (cached_fullrealhost)
 881                 free(cached_fullrealhost);
 882         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 883 }
 884
 885 bool User::ForceNickChange(const char* newnick)
 886 {
 887         try
 888         {
 889                 int MOD_RESULT = 0;
 890
 891                 this->InvalidateCache();
 892
 893                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 894
 895                 if (MOD_RESULT)
 896                 {
 897                         ServerInstance->stats->statsCollisions++;
 898                         return false;
 899                 }
 900
 901                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
 902                 {
 903                         ServerInstance->stats->statsCollisions++;
 904                         return false;
 905                 }
 906
 907                 if (this->registered == REG_ALL)
 908                 {
 909                         std::deque<classbase*> dummy;
 910                         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 911                         if (nickhandler)
 912                         {
 913                                 nickhandler->HandleInternal(1, dummy);
 914                                 bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
 915                                 nickhandler->HandleInternal(0, dummy);
 916                                 return result;
 917                         }
 918                 }
 919                 return false;
 920         }
 921
 922         catch (...)
 923         {
 924                 ServerInstance->Log(DEBUG,"Exception in User::ForceNickChange()");
 925                 return false;
 926         }
 927 }
 928
 929 void User::SetSockAddr(int protocol_family, const char* ip, int port)
 930 {
 931         switch (protocol_family)
 932         {
 933 #ifdef SUPPORT_IP6LINKS
 934                 case AF_INET6:
 935                 {
 936                         sockaddr_in6* sin = new sockaddr_in6;
 937                         sin->sin6_family = AF_INET6;
 938                         sin->sin6_port = port;
 939                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
 940                         this->ip = (sockaddr*)sin;
 941                 }
 942                 break;
 943 #endif
 944                 case AF_INET:
 945                 {
 946                         sockaddr_in* sin = new sockaddr_in;
 947                         sin->sin_family = AF_INET;
 948                         sin->sin_port = port;
 949                         inet_pton(AF_INET, ip, &sin->sin_addr);
 950                         this->ip = (sockaddr*)sin;
 951                 }
 952                 break;
 953                 default:
 954                         ServerInstance->Log(DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
 955                 break;
 956         }
 957 }
 958
 959 int User::GetPort()
 960 {
 961         if (this->ip == NULL)
 962                 return 0;
 963
 964         switch (this->GetProtocolFamily())
 965         {
 966 #ifdef SUPPORT_IP6LINKS
 967                 case AF_INET6:
 968                 {
 969                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
 970                         return sin->sin6_port;
 971                 }
 972                 break;
 973 #endif
 974                 case AF_INET:
 975                 {
 976                         sockaddr_in* sin = (sockaddr_in*)this->ip;
 977                         return sin->sin_port;
 978                 }
 979                 break;
 980                 default:
 981                 break;
 982         }
 983         return 0;
 984 }
 985
 986 int User::GetProtocolFamily()
 987 {
 988         if (this->ip == NULL)
 989                 return 0;
 990
 991         sockaddr_in* sin = (sockaddr_in*)this->ip;
 992         return sin->sin_family;
 993 }
 994
 995 /*
 996  * XXX the duplication here is horrid..
 997  * do we really need two methods doing essentially the same thing?
 998  */
 999 const char* User::GetIPString()
1000 {
1001         static char buf[1024];
1002
1003         if (this->ip == NULL)
1004                 return "";
1005
1006         switch (this->GetProtocolFamily())
1007         {
1008 #ifdef SUPPORT_IP6LINKS
1009                 case AF_INET6:
1010                 {
1011                         static char temp[1024];
1012
1013                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1014                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1015                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1016                         if (*buf == ':')
1017                         {
1018                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1019                                 *temp = '0';
1020                                 return temp;
1021                         }
1022                         return buf;
1023                 }
1024                 break;
1025 #endif
1026                 case AF_INET:
1027                 {
1028                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1029                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1030                         return buf;
1031                 }
1032                 break;
1033                 default:
1034                 break;
1035         }
1036         return "";
1037 }
1038
1039 /** NOTE: We cannot pass a const reference to this method.
1040  * The string is changed by the workings of the method,
1041  * so that if we pass const ref, we end up copying it to
1042  * something we can change anyway. Makes sense to just let
1043  * the compiler do that copy for us.
1044  */
1045 void User::Write(std::string text)
1046 {
1047         if (!ServerInstance->SE->BoundsCheckFd(this))
1048                 return;
1049
1050         try
1051         {
1052                 /* ServerInstance->Log(DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1053                  * WARNING: The above debug line is VERY loud, do NOT
1054                  * enable it till we have a good way of filtering it
1055                  * out of the logs (e.g. 1.2 would be good).
1056                  */
1057                 text.append("\r\n");
1058         }
1059         catch (...)
1060         {
1061                 ServerInstance->Log(DEBUG,"Exception in User::Write() std::string::append");
1062                 return;
1063         }
1064
1065         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1066         {
1067                 try
1068                 {
1069                         /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1070                          * implement their own buffering mechanisms
1071                          */
1072                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1073                 }
1074                 catch (CoreException& modexcept)
1075                 {
1076                         ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1077                 }
1078         }
1079         else
1080         {
1081                 this->AddWriteBuf(text);
1082         }
1083         ServerInstance->stats->statsSent += text.length();
1084         this->ServerInstance->SE->WantWrite(this);
1085 }
1086
1087 /** Write()
1088  */
1089 void User::Write(const char *text, ...)
1090 {
1091         va_list argsPtr;
1092         char textbuffer[MAXBUF];
1093
1094         va_start(argsPtr, text);
1095         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1096         va_end(argsPtr);
1097
1098         this->Write(std::string(textbuffer));
1099 }
1100
1101 void User::WriteServ(const std::string& text)
1102 {
1103         char textbuffer[MAXBUF];
1104
1105         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1106         this->Write(std::string(textbuffer));
1107 }
1108
1109 /** WriteServ()
1110  *  Same as Write(), except `text' is prefixed with `:server.name '.
1111  */
1112 void User::WriteServ(const char* text, ...)
1113 {
1114         va_list argsPtr;
1115         char textbuffer[MAXBUF];
1116
1117         va_start(argsPtr, text);
1118         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1119         va_end(argsPtr);
1120
1121         this->WriteServ(std::string(textbuffer));
1122 }
1123
1124
1125 void User::WriteFrom(User *user, const std::string &text)
1126 {
1127         char tb[MAXBUF];
1128
1129         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1130
1131         this->Write(std::string(tb));
1132 }
1133
1134
1135 /* write text from an originating user to originating user */
1136
1137 void User::WriteFrom(User *user, const char* text, ...)
1138 {
1139         va_list argsPtr;
1140         char textbuffer[MAXBUF];
1141
1142         va_start(argsPtr, text);
1143         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1144         va_end(argsPtr);
1145
1146         this->WriteFrom(user, std::string(textbuffer));
1147 }
1148
1149
1150 /* write text to an destination user from a source user (e.g. user privmsg) */
1151
1152 void User::WriteTo(User *dest, const char *data, ...)
1153 {
1154         char textbuffer[MAXBUF];
1155         va_list argsPtr;
1156
1157         va_start(argsPtr, data);
1158         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1159         va_end(argsPtr);
1160
1161         this->WriteTo(dest, std::string(textbuffer));
1162 }
1163
1164 void User::WriteTo(User *dest, const std::string &data)
1165 {
1166         dest->WriteFrom(this, data);
1167 }
1168
1169
1170 void User::WriteCommon(const char* text, ...)
1171 {
1172         char textbuffer[MAXBUF];
1173         va_list argsPtr;
1174
1175         if (this->registered != REG_ALL)
1176                 return;
1177
1178         va_start(argsPtr, text);
1179         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1180         va_end(argsPtr);
1181
1182         this->WriteCommon(std::string(textbuffer));
1183 }
1184
1185 void User::WriteCommon(const std::string &text)
1186 {
1187         try
1188         {
1189                 bool sent_to_at_least_one = false;
1190                 char tb[MAXBUF];
1191
1192                 if (this->registered != REG_ALL)
1193                         return;
1194
1195                 uniq_id++;
1196
1197                 /* We dont want to be doing this n times, just once */
1198                 snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1199                 std::string out = tb;
1200
1201                 for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1202                 {
1203                         CUList* ulist = v->first->GetUsers();
1204                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1205                         {
1206                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1207                                 {
1208                                         already_sent[i->first->fd] = uniq_id;
1209                                         i->first->Write(out);
1210                                         sent_to_at_least_one = true;
1211                                 }
1212                         }
1213                 }
1214
1215                 /*
1216                  * if the user was not in any channels, no users will receive the text. Make sure the user
1217                  * receives their OWN message for WriteCommon
1218                  */
1219                 if (!sent_to_at_least_one)
1220                 {
1221                         this->Write(std::string(tb));
1222                 }
1223         }
1224
1225         catch (...)
1226         {
1227                 ServerInstance->Log(DEBUG,"Exception in User::WriteCommon()");
1228         }
1229 }
1230
1231
1232 /* write a formatted string to all users who share at least one common
1233  * channel, NOT including the source user e.g. for use in QUIT
1234  */
1235
1236 void User::WriteCommonExcept(const char* text, ...)
1237 {
1238         char textbuffer[MAXBUF];
1239         va_list argsPtr;
1240
1241         va_start(argsPtr, text);
1242         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1243         va_end(argsPtr);
1244
1245         this->WriteCommonExcept(std::string(textbuffer));
1246 }
1247
1248 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1249 {
1250         char tb1[MAXBUF];
1251         char tb2[MAXBUF];
1252
1253         if (this->registered != REG_ALL)
1254                 return;
1255
1256         uniq_id++;
1257         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1258         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1259         std::string out1 = tb1;
1260         std::string out2 = tb2;
1261
1262         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1263         {
1264                 CUList *ulist = v->first->GetUsers();
1265                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1266                 {
1267                         if (this != i->first)
1268                         {
1269                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1270                                 {
1271                                         already_sent[i->first->fd] = uniq_id;
1272                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1273                                 }
1274                         }
1275                 }
1276         }
1277 }
1278
1279 void User::WriteCommonExcept(const std::string &text)
1280 {
1281         char tb1[MAXBUF];
1282         std::string out1;
1283
1284         if (this->registered != REG_ALL)
1285                 return;
1286
1287         uniq_id++;
1288         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1289         out1 = tb1;
1290
1291         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1292         {
1293                 CUList *ulist = v->first->GetUsers();
1294                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1295                 {
1296                         if (this != i->first)
1297                         {
1298                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1299                                 {
1300                                         already_sent[i->first->fd] = uniq_id;
1301                                         i->first->Write(out1);
1302                                 }
1303                         }
1304                 }
1305         }
1306
1307 }
1308
1309 void User::WriteWallOps(const std::string &text)
1310 {
1311         if (!IS_OPER(this) && IS_LOCAL(this))
1312                 return;
1313
1314         std::string wallop("WALLOPS :");
1315         wallop.append(text);
1316
1317         for (std::vector<User*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1318         {
1319                 User* t = *i;
1320                 if (t->IsModeSet('w'))
1321                         this->WriteTo(t,wallop);
1322         }
1323 }
1324
1325 void User::WriteWallOps(const char* text, ...)
1326 {
1327         char textbuffer[MAXBUF];
1328         va_list argsPtr;
1329
1330         va_start(argsPtr, text);
1331         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1332         va_end(argsPtr);
1333
1334         this->WriteWallOps(std::string(textbuffer));
1335 }
1336
1337 /* return 0 or 1 depending if users u and u2 share one or more common channels
1338  * (used by QUIT, NICK etc which arent channel specific notices)
1339  *
1340  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1341  * the first users channels then the second users channels within the outer loop,
1342  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1343  * all possible iterations). However this new function instead checks against the
1344  * channel's userlist in the inner loop which is a std::map<User*,User*>
1345  * and saves us time as we already know what pointer value we are after.
1346  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1347  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1348  */
1349 bool User::SharesChannelWith(User *other)
1350 {
1351         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1352                 return false;
1353
1354         /* Outer loop */
1355         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1356         {
1357                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1358                  * by replacing it with a map::find which *should* be more efficient
1359                  */
1360                 if (i->first->HasUser(other))
1361                         return true;
1362         }
1363         return false;
1364 }
1365
1366 bool User::ChangeName(const char* gecos)
1367 {
1368         if (!strcmp(gecos, this->fullname))
1369                 return true;
1370
1371         if (IS_LOCAL(this))
1372         {
1373                 int MOD_RESULT = 0;
1374                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1375                 if (MOD_RESULT)
1376                         return false;
1377                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1378         }
1379         strlcpy(this->fullname,gecos,MAXGECOS+1);
1380
1381         return true;
1382 }
1383
1384 bool User::ChangeDisplayedHost(const char* host)
1385 {
1386         if (!strcmp(host, this->dhost))
1387                 return true;
1388
1389         if (IS_LOCAL(this))
1390         {
1391                 int MOD_RESULT = 0;
1392                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1393                 if (MOD_RESULT)
1394                         return false;
1395                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1396         }
1397         if (this->ServerInstance->Config->CycleHosts)
1398                 this->WriteCommonExcept("QUIT :Changing hosts");
1399
1400         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1401         strlcpy(this->dhost,host,64);
1402
1403         this->InvalidateCache();
1404
1405         if (this->ServerInstance->Config->CycleHosts)
1406         {
1407                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1408                 {
1409                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1410                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1411                         if (n.length() > 0)
1412                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1413                 }
1414         }
1415
1416         if (IS_LOCAL(this))
1417                 this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost);
1418
1419         return true;
1420 }
1421
1422 bool User::ChangeIdent(const char* newident)
1423 {
1424         if (!strcmp(newident, this->ident))
1425                 return true;
1426
1427         if (this->ServerInstance->Config->CycleHosts)
1428                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1429
1430         strlcpy(this->ident, newident, IDENTMAX+2);
1431
1432         this->InvalidateCache();
1433
1434         if (this->ServerInstance->Config->CycleHosts)
1435         {
1436                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1437                 {
1438                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1439                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1440                         if (n.length() > 0)
1441                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1442                 }
1443         }
1444
1445         return true;
1446 }
1447
1448 void User::SendAll(const char* command, char* text, ...)
1449 {
1450         char textbuffer[MAXBUF];
1451         char formatbuffer[MAXBUF];
1452         va_list argsPtr;
1453
1454         va_start(argsPtr, text);
1455         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1456         va_end(argsPtr);
1457
1458         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1459         std::string fmt = formatbuffer;
1460
1461         for (std::vector<User*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1462         {
1463                 (*i)->Write(fmt);
1464         }
1465 }
1466
1467
1468 std::string User::ChannelList(User* source)
1469 {
1470         try
1471         {
1472                 std::string list;
1473                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1474                 {
1475                         /* If the target is the same as the sender, let them see all their channels.
1476                          * If the channel is NOT private/secret OR the user shares a common channel
1477                          * If the user is an oper, and the <options:operspywhois> option is set.
1478                          */
1479                         if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1480                         {
1481                                 list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1482                         }
1483                 }
1484                 return list;
1485         }
1486         catch (...)
1487         {
1488                 ServerInstance->Log(DEBUG,"Exception in User::ChannelList()");
1489                 return "";
1490         }
1491 }
1492
1493 void User::SplitChanList(User* dest, const std::string &cl)
1494 {
1495         std::string line;
1496         std::ostringstream prefix;
1497         std::string::size_type start, pos, length;
1498
1499         try
1500         {
1501                 prefix << this->nick << " " << dest->nick << " :";
1502                 line = prefix.str();
1503                 int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1504
1505                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1506                 {
1507                         length = (pos == std::string::npos) ? cl.length() : pos;
1508
1509                         if (line.length() + namelen + length - start > 510)
1510                         {
1511                                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1512                                 line = prefix.str();
1513                         }
1514
1515                         if(pos == std::string::npos)
1516                         {
1517                                 line.append(cl.substr(start, length - start));
1518                                 break;
1519                         }
1520                         else
1521                         {
1522                                 line.append(cl.substr(start, length - start + 1));
1523                         }
1524                 }
1525
1526                 if (line.length())
1527                 {
1528                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1529                 }
1530         }
1531
1532         catch (...)
1533         {
1534                 ServerInstance->Log(DEBUG,"Exception in User::SplitChanList()");
1535         }
1536 }
1537
1538 unsigned int User::GetMaxChans()
1539 {
1540         return this->MaxChans;
1541 }
1542
1543
1544 /*
1545  * Sets a user's connection class.
1546  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1547  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1548  * then their ip will be taken as 'priority' anyway, so for example,
1549  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1550  */
1551 ConnectClass* User::SetClass(const std::string &explicit_name)
1552 {
1553         ConnectClass *found = NULL;
1554
1555         if (!IS_LOCAL(this))
1556                 return NULL;
1557
1558         if (!explicit_name.empty())
1559         {
1560                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1561                 {
1562                         ConnectClass* c = *i;
1563
1564                         if (explicit_name == c->GetName() && !c->GetDisabled())
1565                         {
1566                                 found = c;
1567                         }
1568                 }
1569         }
1570         else
1571         {
1572                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1573                 {
1574                         ConnectClass* c = *i;
1575
1576                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1577                         {
1578                                 if (c->GetPort())
1579                                 {
1580                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1581                                         {
1582                                                 found = c;
1583                                         }
1584                                         else
1585                                                 continue;
1586                                 }
1587                                 else
1588                                 {
1589                                         if (!c->GetDisabled())
1590                                                 found = c;
1591                                 }
1592                         }
1593                 }
1594         }
1595
1596         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1597         if (found)
1598         {
1599                 /* deny change if change will take class over the limit */
1600                 if (found->limit && (found->RefCount + 1 >= found->limit))
1601                 {
1602                         ServerInstance->Log(DEBUG, "OOPS: Connect class limit (%u) hit, denying", found->limit);
1603                         return this->MyClass;
1604                 }
1605
1606                 /* should always be valid, but just in case .. */
1607                 if (this->MyClass)
1608                 {
1609                         if (found == this->MyClass) // no point changing this shit :P
1610                                 return this->MyClass;
1611                         this->MyClass->RefCount--;
1612                         ServerInstance->Log(DEBUG, "Untying user from connect class -- refcount: %u", this->MyClass->RefCount);
1613                 }
1614
1615                 this->MyClass = found;
1616                 this->MyClass->RefCount++;
1617                 ServerInstance->Log(DEBUG, "User tied to new class -- connect refcount now: %u", this->MyClass->RefCount);
1618         }
1619
1620         return this->MyClass;
1621 }
1622
1623 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1624  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1625  * then their ip will be taken as 'priority' anyway, so for example,
1626  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1627  */
1628 ConnectClass* User::GetClass()
1629 {
1630         return this->MyClass;
1631 }
1632
1633 void User::PurgeEmptyChannels()
1634 {
1635         std::vector<Channel*> to_delete;
1636
1637         // firstly decrement the count on each channel
1638         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1639         {
1640                 f->first->RemoveAllPrefixes(this);
1641                 if (f->first->DelUser(this) == 0)
1642                 {
1643                         /* No users left in here, mark it for deletion */
1644                         try
1645                         {
1646                                 to_delete.push_back(f->first);
1647                         }
1648                         catch (...)
1649                         {
1650                                 ServerInstance->Log(DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1651                         }
1652                 }
1653         }
1654
1655         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1656         {
1657                 Channel* thischan = *n;
1658                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1659                 if (i2 != ServerInstance->chanlist->end())
1660                 {
1661                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1662                         delete i2->second;
1663                         ServerInstance->chanlist->erase(i2);
1664                         this->chans.erase(*n);
1665                 }
1666         }
1667
1668         this->UnOper();
1669 }
1670
1671 void User::ShowMOTD()
1672 {
1673         if (!ServerInstance->Config->MOTD.size())
1674         {
1675                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1676                 return;
1677         }
1678         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1679
1680         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1681                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
1682
1683         this->WriteServ("376 %s :End of message of the day.", this->nick);
1684 }
1685
1686 void User::ShowRULES()
1687 {
1688         if (!ServerInstance->Config->RULES.size())
1689         {
1690                 this->WriteServ("434 %s :RULES File is missing",this->nick);
1691                 return;
1692         }
1693
1694         this->WriteServ("308 %s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1695
1696         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1697                 this->WriteServ("232 %s :- %s",this->nick,i->c_str());
1698
1699         this->WriteServ("309 %s :End of RULES command.",this->nick);
1700 }
1701
1702 void User::HandleEvent(EventType et, int errornum)
1703 {
1704         /* WARNING: May delete this user! */
1705         int thisfd = this->GetFd();
1706
1707         try
1708         {
1709                 switch (et)
1710                 {
1711                         case EVENT_READ:
1712                                 ServerInstance->ProcessUser(this);
1713                         break;
1714                         case EVENT_WRITE:
1715                                 this->FlushWriteBuf();
1716                         break;
1717                         case EVENT_ERROR:
1718                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1719                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1720                         break;
1721                 }
1722         }
1723         catch (...)
1724         {
1725                 ServerInstance->Log(DEBUG,"Exception in User::HandleEvent intercepted");
1726         }
1727
1728         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1729         if ((ServerInstance->SE->GetRef(thisfd) == this))
1730         {
1731                 if (!WriteError.empty())
1732                 {
1733                         User::QuitUser(ServerInstance, this, GetWriteError());
1734                 }
1735         }
1736 }
1737
1738 void User::SetOperQuit(const std::string &oquit)
1739 {
1740         operquitmsg = oquit;
1741 }
1742
1743 const char* User::GetOperQuit()
1744 {
1745         return operquitmsg.c_str();
1746 }
1747
1748 void User::IncreasePenalty(int increase)
1749 {
1750         this->Penalty += increase;
1751 }
1752
1753 void User::DecreasePenalty(int decrease)
1754 {
1755         this->Penalty -= decrease;
1756 }
1757
1758 VisData::VisData()
1759 {
1760 }
1761
1762 VisData::~VisData()
1763 {
1764 }
1765
1766 bool VisData::VisibleTo(User* user)
1767 {
1768         return true;
1769 }
1770