src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 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 #include "inspircd.h"
  15 #include <stdarg.h>
  16 #include "socketengine.h"
  17 #include "wildcard.h"
  18 #include "xline.h"
  19 #include "commands/cmd_whowas.h"
  20
  21 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  22
  23 /* XXX: Used for speeding up WriteCommon operations */
  24 unsigned long uniq_id = 0;
  25
  26 std::string User::ProcessNoticeMasks(const char *sm)
  27 {
  28         bool adding = true, oldadding = false;
  29         const char *c = sm;
  30         std::string output;
  31
  32         while (c && *c)
  33         {
  34                 switch (*c)
  35                 {
  36                         case '+':
  37                                 adding = true;
  38                         break;
  39                         case '-':
  40                                 adding = false;
  41                         break;
  42                         case '*':
  43                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  44                                 {
  45                                         if (ServerInstance->SNO->IsEnabled(d))
  46                                         {
  47                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  48                                                 {
  49                                                         if ((oldadding != adding) || (!output.length()))
  50                                                                 output += (adding ? '+' : '-');
  51
  52                                                         this->SetNoticeMask(d, adding);
  53
  54                                                         output += d;
  55                                                 }
  56                                         }
  57                                         oldadding = adding;
  58                                 }
  59                         break;
  60                         default:
  61                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  62                                 {
  63                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  64                                         {
  65                                                 if ((oldadding != adding) || (!output.length()))
  66                                                         output += (adding ? '+' : '-');
  67
  68                                                 this->SetNoticeMask(*c, adding);
  69
  70                                                 output += *c;
  71                                         }
  72                                 }
  73                                 oldadding = adding;
  74                         break;
  75                 }
  76
  77                 *c++;
  78         }
  79
  80         return output;
  81 }
  82
  83 void User::StartDNSLookup()
  84 {
  85         try
  86         {
  87                 bool cached;
  88                 const char* ip = this->GetIPString();
  89
  90                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
  91                 if (!strncmp(ip, "0::ffff:", 8))
  92                         res_reverse = new UserResolver(this->ServerInstance, this, ip + 8, DNS_QUERY_PTR4, cached);
  93                 else
  94                         res_reverse = new UserResolver(this->ServerInstance, this, ip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
  95
  96                 this->ServerInstance->AddResolver(res_reverse, cached);
  97         }
  98         catch (CoreException& e)
  99         {
 100                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 101         }
 102 }
 103
 104 bool User::IsNoticeMaskSet(unsigned char sm)
 105 {
 106         return (snomasks[sm-65]);
 107 }
 108
 109 void User::SetNoticeMask(unsigned char sm, bool value)
 110 {
 111         snomasks[sm-65] = value;
 112 }
 113
 114 const char* User::FormatNoticeMasks()
 115 {
 116         static char data[MAXBUF];
 117         int offset = 0;
 118
 119         for (int n = 0; n < 64; n++)
 120         {
 121                 if (snomasks[n])
 122                         data[offset++] = n+65;
 123         }
 124
 125         data[offset] = 0;
 126         return data;
 127 }
 128
 129
 130
 131 bool User::IsModeSet(unsigned char m)
 132 {
 133         return (modes[m-65]);
 134 }
 135
 136 void User::SetMode(unsigned char m, bool value)
 137 {
 138         modes[m-65] = value;
 139 }
 140
 141 const char* User::FormatModes()
 142 {
 143         static char data[MAXBUF];
 144         int offset = 0;
 145         for (int n = 0; n < 64; n++)
 146         {
 147                 if (modes[n])
 148                         data[offset++] = n+65;
 149         }
 150         data[offset] = 0;
 151         return data;
 152 }
 153
 154 void User::DecrementModes()
 155 {
 156         ServerInstance->Log(DEBUG,"DecrementModes()");
 157         for (unsigned char n = 'A'; n <= 'z'; n++)
 158         {
 159                 if (modes[n-65])
 160                 {
 161                         ServerInstance->Log(DEBUG,"DecrementModes() found mode %c", n);
 162                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 163                         if (mh)
 164                         {
 165                                 ServerInstance->Log(DEBUG,"Found handler %c and call ChangeCount", n);
 166                                 mh->ChangeCount(-1);
 167                         }
 168                 }
 169         }
 170 }
 171
 172 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 173 {
 174         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 175         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 176         reset_due = ServerInstance->Time();
 177         age = ServerInstance->Time(true);
 178         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 179         ChannelCount = timeout = flood = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 180         muted = exempt = haspassed = dns_done = false;
 181         fd = -1;
 182         recvq.clear();
 183         sendq.clear();
 184         WriteError.clear();
 185         res_forward = res_reverse = NULL;
 186         Visibility = NULL;
 187         ip = NULL;
 188         chans.clear();
 189         invites.clear();
 190         memset(modes,0,sizeof(modes));
 191         memset(snomasks,0,sizeof(snomasks));
 192         /* Invalidate cache */
 193         operquit = cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 194
 195         if (uid.empty())
 196                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 197         else
 198                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 199
 200         ServerInstance->Log(DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 201
 202         user_hash::iterator finduuid = Instance->uuidlist->find(uuid);
 203         if (finduuid == Instance->uuidlist->end())
 204                 (*Instance->uuidlist)[uuid] = this;
 205         else
 206                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 207 }
 208
 209 void User::RemoveCloneCounts()
 210 {
 211         clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString());
 212         if (x != ServerInstance->local_clones.end())
 213         {
 214                 x->second--;
 215                 if (!x->second)
 216                 {
 217                         ServerInstance->local_clones.erase(x);
 218                 }
 219         }
 220
 221         clonemap::iterator y = ServerInstance->global_clones.find(this->GetIPString());
 222         if (y != ServerInstance->global_clones.end())
 223         {
 224                 y->second--;
 225                 if (!y->second)
 226                 {
 227                         ServerInstance->global_clones.erase(y);
 228                 }
 229         }
 230 }
 231
 232 User::~User()
 233 {
 234         this->InvalidateCache();
 235         this->DecrementModes();
 236         if (operquit)
 237                 free(operquit);
 238         if (ip)
 239         {
 240                 this->RemoveCloneCounts();
 241
 242                 if (this->GetProtocolFamily() == AF_INET)
 243                 {
 244                         delete (sockaddr_in*)ip;
 245                 }
 246 #ifdef SUPPORT_IP6LINKS
 247                 else
 248                 {
 249                         delete (sockaddr_in6*)ip;
 250                 }
 251 #endif
 252         }
 253
 254         ServerInstance->uuidlist->erase(uuid);
 255 }
 256
 257 char* User::MakeHost()
 258 {
 259         if (this->cached_makehost)
 260                 return this->cached_makehost;
 261
 262         char nhost[MAXBUF];
 263         /* This is much faster than snprintf */
 264         char* t = nhost;
 265         for(char* n = ident; *n; n++)
 266                 *t++ = *n;
 267         *t++ = '@';
 268         for(char* n = host; *n; n++)
 269                 *t++ = *n;
 270         *t = 0;
 271
 272         this->cached_makehost = strdup(nhost);
 273
 274         return this->cached_makehost;
 275 }
 276
 277 char* User::MakeHostIP()
 278 {
 279         if (this->cached_hostip)
 280                 return this->cached_hostip;
 281
 282         char ihost[MAXBUF];
 283         /* This is much faster than snprintf */
 284         char* t = ihost;
 285         for(char* n = ident; *n; n++)
 286                 *t++ = *n;
 287         *t++ = '@';
 288         for(const char* n = this->GetIPString(); *n; n++)
 289                 *t++ = *n;
 290         *t = 0;
 291
 292         this->cached_hostip = strdup(ihost);
 293
 294         return this->cached_hostip;
 295 }
 296
 297 void User::CloseSocket()
 298 {
 299         ServerInstance->SE->Shutdown(this, 2);
 300         ServerInstance->SE->Close(this);
 301 }
 302
 303 char* User::GetFullHost()
 304 {
 305         if (this->cached_fullhost)
 306                 return this->cached_fullhost;
 307
 308         char result[MAXBUF];
 309         char* t = result;
 310         for(char* n = nick; *n; n++)
 311                 *t++ = *n;
 312         *t++ = '!';
 313         for(char* n = ident; *n; n++)
 314                 *t++ = *n;
 315         *t++ = '@';
 316         for(char* n = dhost; *n; n++)
 317                 *t++ = *n;
 318         *t = 0;
 319
 320         this->cached_fullhost = strdup(result);
 321
 322         return this->cached_fullhost;
 323 }
 324
 325 char* User::MakeWildHost()
 326 {
 327         static char nresult[MAXBUF];
 328         char* t = nresult;
 329         *t++ = '*';     *t++ = '!';
 330         *t++ = '*';     *t++ = '@';
 331         for(char* n = dhost; *n; n++)
 332                 *t++ = *n;
 333         *t = 0;
 334         return nresult;
 335 }
 336
 337 int User::ReadData(void* buffer, size_t size)
 338 {
 339         if (IS_LOCAL(this))
 340         {
 341 #ifndef WIN32
 342                 return read(this->fd, buffer, size);
 343 #else
 344                 return recv(this->fd, (char*)buffer, size, 0);
 345 #endif
 346         }
 347         else
 348                 return 0;
 349 }
 350
 351
 352 char* User::GetFullRealHost()
 353 {
 354         if (this->cached_fullrealhost)
 355                 return this->cached_fullrealhost;
 356
 357         char fresult[MAXBUF];
 358         char* t = fresult;
 359         for(char* n = nick; *n; n++)
 360                 *t++ = *n;
 361         *t++ = '!';
 362         for(char* n = ident; *n; n++)
 363                 *t++ = *n;
 364         *t++ = '@';
 365         for(char* n = host; *n; n++)
 366                 *t++ = *n;
 367         *t = 0;
 368
 369         this->cached_fullrealhost = strdup(fresult);
 370
 371         return this->cached_fullrealhost;
 372 }
 373
 374 bool User::IsInvited(const irc::string &channel)
 375 {
 376         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 377         {
 378                 if (channel == *i)
 379                 {
 380                         return true;
 381                 }
 382         }
 383         return false;
 384 }
 385
 386 InvitedList* User::GetInviteList()
 387 {
 388         return &invites;
 389 }
 390
 391 void User::InviteTo(const irc::string &channel)
 392 {
 393         invites.push_back(channel);
 394 }
 395
 396 void User::RemoveInvite(const irc::string &channel)
 397 {
 398         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 399         {
 400                 if (channel == *i)
 401                 {
 402                         invites.erase(i);
 403                         return;
 404                 }
 405         }
 406 }
 407
 408 bool User::HasPermission(const std::string &command)
 409 {
 410         char* mycmd;
 411         char* savept;
 412         char* savept2;
 413
 414         /*
 415          * users on remote servers can completely bypass all permissions based checks.
 416          * This prevents desyncs when one server has different type/class tags to another.
 417          * That having been said, this does open things up to the possibility of source changes
 418          * allowing remote kills, etc - but if they have access to the src, they most likely have
 419          * access to the conf - so it's an end to a means either way.
 420          */
 421         if (!IS_LOCAL(this))
 422                 return true;
 423
 424         // are they even an oper at all?
 425         if (!IS_OPER(this))
 426         {
 427                 return false;
 428         }
 429
 430         // check their opertype exists (!). This won't affect local users, of course.
 431         opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 432         if (iter_opertype == ServerInstance->Config->opertypes.end())
 433         {
 434                 return false;
 435         }
 436
 437         /* XXX all this strtok/strdup stuff is a bit ick and horrid -- w00t */
 438         char* Classes = strdup(iter_opertype->second);
 439         char* myclass = strtok_r(Classes," ",&savept);
 440         while (myclass)
 441         {
 442                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 443                 if (iter_operclass != ServerInstance->Config->operclass.end())
 444                 {
 445                         char* CommandList = strdup(iter_operclass->second);
 446                         mycmd = strtok_r(CommandList," ",&savept2);
 447                         while (mycmd)
 448                         {
 449                                 if ((!strcasecmp(mycmd,command.c_str())) || (*mycmd == '*'))
 450                                 {
 451                                         free(Classes);
 452                                         free(CommandList);
 453                                         return true;
 454                                 }
 455                                 mycmd = strtok_r(NULL," ",&savept2);
 456                         }
 457                         free(CommandList);
 458                 }
 459                 myclass = strtok_r(NULL," ",&savept);
 460         }
 461         free(Classes);
 462
 463         return false;
 464 }
 465
 466 /** NOTE: We cannot pass a const reference to this method.
 467  * The string is changed by the workings of the method,
 468  * so that if we pass const ref, we end up copying it to
 469  * something we can change anyway. Makes sense to just let
 470  * the compiler do that copy for us.
 471  */
 472 bool User::AddBuffer(std::string a)
 473 {
 474         try
 475         {
 476                 std::string::size_type i = a.rfind('\r');
 477
 478                 while (i != std::string::npos)
 479                 {
 480                         a.erase(i, 1);
 481                         i = a.rfind('\r');
 482                 }
 483
 484                 if (a.length())
 485                         recvq.append(a);
 486
 487                 if (recvq.length() > (unsigned)this->recvqmax)
 488                 {
 489                         this->SetWriteError("RecvQ exceeded");
 490                         ServerInstance->WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
 491                         return false;
 492                 }
 493
 494                 return true;
 495         }
 496
 497         catch (...)
 498         {
 499                 ServerInstance->Log(DEBUG,"Exception in User::AddBuffer()");
 500                 return false;
 501         }
 502 }
 503
 504 bool User::BufferIsReady()
 505 {
 506         return (recvq.find('\n') != std::string::npos);
 507 }
 508
 509 void User::ClearBuffer()
 510 {
 511         recvq.clear();
 512 }
 513
 514 std::string User::GetBuffer()
 515 {
 516         try
 517         {
 518                 if (!recvq.length())
 519                         return "";
 520
 521                 /* Strip any leading \r or \n off the string.
 522                  * Usually there are only one or two of these,
 523                  * so its is computationally cheap to do.
 524                  */
 525                 std::string::iterator t = recvq.begin();
 526                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 527                 {
 528                         recvq.erase(t);
 529                         t = recvq.begin();
 530                 }
 531
 532                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 533                 {
 534                         /* Find the first complete line, return it as the
 535                          * result, and leave the recvq as whats left
 536                          */
 537                         if (*x == '\n')
 538                         {
 539                                 std::string ret = std::string(recvq.begin(), x);
 540                                 recvq.erase(recvq.begin(), x + 1);
 541                                 return ret;
 542                         }
 543                 }
 544                 return "";
 545         }
 546
 547         catch (...)
 548         {
 549                 ServerInstance->Log(DEBUG,"Exception in User::GetBuffer()");
 550                 return "";
 551         }
 552 }
 553
 554 void User::AddWriteBuf(const std::string &data)
 555 {
 556         if (*this->GetWriteError())
 557                 return;
 558
 559         if (sendq.length() + data.length() > (unsigned)this->sendqmax)
 560         {
 561                 /*
 562                  * Fix by brain - Set the error text BEFORE calling writeopers, because
 563                  * if we dont it'll recursively  call here over and over again trying
 564                  * to repeatedly add the text to the sendq!
 565                  */
 566                 this->SetWriteError("SendQ exceeded");
 567                 ServerInstance->WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
 568                 return;
 569         }
 570
 571         try
 572         {
 573                 if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 574                         sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 575                 else
 576                         sendq.append(data);
 577         }
 578         catch (...)
 579         {
 580                 this->SetWriteError("SendQ exceeded");
 581                 ServerInstance->WriteOpers("*** User %s SendQ got an exception",this->nick);
 582         }
 583 }
 584
 585 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 586 void User::FlushWriteBuf()
 587 {
 588         try
 589         {
 590                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 591                 {
 592                         sendq.clear();
 593                 }
 594                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 595                 {
 596                         int old_sendq_length = sendq.length();
 597                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 598
 599                         if (n_sent == -1)
 600                         {
 601                                 if (errno == EAGAIN)
 602                                 {
 603                                         /* The socket buffer is full. This isnt fatal,
 604                                          * try again later.
 605                                          */
 606                                         this->ServerInstance->SE->WantWrite(this);
 607                                 }
 608                                 else
 609                                 {
 610                                         /* Fatal error, set write error and bail
 611                                          */
 612                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 613                                         return;
 614                                 }
 615                         }
 616                         else
 617                         {
 618                                 /* advance the queue */
 619                                 if (n_sent)
 620                                         this->sendq = this->sendq.substr(n_sent);
 621                                 /* update the user's stats counters */
 622                                 this->bytes_out += n_sent;
 623                                 this->cmds_out++;
 624                                 if (n_sent != old_sendq_length)
 625                                         this->ServerInstance->SE->WantWrite(this);
 626                         }
 627                 }
 628         }
 629
 630         catch (...)
 631         {
 632                 ServerInstance->Log(DEBUG,"Exception in User::FlushWriteBuf()");
 633         }
 634
 635         if (this->sendq.empty())
 636         {
 637                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 638         }
 639 }
 640
 641 void User::SetWriteError(const std::string &error)
 642 {
 643         try
 644         {
 645                 // don't try to set the error twice, its already set take the first string.
 646                 if (this->WriteError.empty())
 647                         this->WriteError = error;
 648         }
 649
 650         catch (...)
 651         {
 652                 ServerInstance->Log(DEBUG,"Exception in User::SetWriteError()");
 653         }
 654 }
 655
 656 const char* User::GetWriteError()
 657 {
 658         return this->WriteError.c_str();
 659 }
 660
 661 void User::Oper(const std::string &opertype)
 662 {
 663         try
 664         {
 665                 this->modes[UM_OPERATOR] = 1;
 666                 this->WriteServ("MODE %s :+o", this->nick);
 667                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 668                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 669                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 670                 ServerInstance->all_opers.push_back(this);
 671                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype));
 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         }
 694
 695         catch (...)
 696         {
 697                 ServerInstance->Log(DEBUG,"Exception in User::UnOper()");
 698         }
 699 }
 700
 701 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 702 {
 703         Instance->Log(DEBUG,"QuitUser: %s", user->nick);
 704         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, operreason);
 705         user->muted = true;
 706         Instance->GlobalCulls.AddItem(user, quitreason.c_str(), operreason);
 707 }
 708
 709 /* adds or updates an entry in the whowas list */
 710 void User::AddToWhoWas()
 711 {
 712         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 713         if (whowas_command)
 714         {
 715                 std::deque<classbase*> params;
 716                 params.push_back(this);
 717                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 718         }
 719 }
 720
 721 /* add a client connection to the sockets list */
 722 void User::AddClient(InspIRCd* Instance, int socket, int port, bool iscached, int socketfamily, sockaddr* ip)
 723 {
 724         /* NOTE: Calling this one parameter constructor for User automatically
 725          * allocates a new UUID and places it in the hash_map.
 726          */
 727         User* New = NULL;
 728         try
 729         {
 730                 New = new User(Instance);
 731         }
 732         catch (...)
 733         {
 734                 Instance->Log(DEFAULT,"*** WTF *** Duplicated UUID! -- Crack smoking monkies have been unleashed.");
 735                 Instance->WriteOpers("*** WARNING *** Duplicate UUID allocated!");
 736                 return;
 737         }
 738
 739         Instance->Log(DEBUG,"New user fd: %d", socket);
 740
 741         int j = 0;
 742
 743         Instance->unregistered_count++;
 744
 745         char ipaddr[MAXBUF];
 746 #ifdef IPV6
 747         if (socketfamily == AF_INET6)
 748                 inet_ntop(AF_INET6, &((const sockaddr_in6*)ip)->sin6_addr, ipaddr, sizeof(ipaddr));
 749         else
 750 #endif
 751         inet_ntop(AF_INET, &((const sockaddr_in*)ip)->sin_addr, ipaddr, sizeof(ipaddr));
 752
 753         (*(Instance->clientlist))[New->uuid] = New;
 754         New->SetFd(socket);
 755
 756         /* The users default nick is their UUID */
 757         strlcpy(New->nick, New->uuid, NICKMAX - 1);
 758
 759         New->server = Instance->FindServerNamePtr(Instance->Config->ServerName);
 760         /* We don't need range checking here, we KNOW 'unknown\0' will fit into the ident field. */
 761         strcpy(New->ident, "unknown");
 762
 763         New->registered = REG_NONE;
 764         New->signon = Instance->Time() + Instance->Config->dns_timeout;
 765         New->lastping = 1;
 766
 767         New->SetSockAddr(socketfamily, ipaddr, port);
 768
 769         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
 770         for (const char* temp = New->GetIPString(); *temp && j < 64; temp++, j++)
 771                 New->dhost[j] = New->host[j] = *temp;
 772         New->dhost[j] = New->host[j] = 0;
 773
 774         Instance->AddLocalClone(New);
 775         Instance->AddGlobalClone(New);
 776
 777         /*
 778          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
 779          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
 780          */
 781         ConnectClass* i = New->GetClass();
 782
 783         if (!i)
 784         {
 785                 User::QuitUser(Instance, New, "Access denied by configuration");
 786                 return;
 787         }
 788
 789         /*
 790          * Check connect class settings and initialise settings into User.
 791          * This will be done again after DNS resolution. -- w00t
 792          */
 793         New->CheckClass();
 794
 795         Instance->local_users.push_back(New);
 796
 797         if ((Instance->local_users.size() > Instance->Config->SoftLimit) || (Instance->local_users.size() >= MAXCLIENTS))
 798         {
 799                 Instance->WriteOpers("*** Warning: softlimit value has been reached: %d clients", Instance->Config->SoftLimit);
 800                 User::QuitUser(Instance, New,"No more connections allowed");
 801                 return;
 802         }
 803
 804         /*
 805          * XXX -
 806          * this is done as a safety check to keep the file descriptors within range of fd_ref_table.
 807          * its a pretty big but for the moment valid assumption:
 808          * file descriptors are handed out starting at 0, and are recycled as theyre freed.
 809          * therefore if there is ever an fd over 65535, 65536 clients must be connected to the
 810          * irc server at once (or the irc server otherwise initiating this many connections, files etc)
 811          * which for the time being is a physical impossibility (even the largest networks dont have more
 812          * than about 10,000 users on ONE server!)
 813          */
 814 #ifndef WINDOWS
 815         if ((unsigned int)socket >= MAX_DESCRIPTORS)
 816         {
 817                 User::QuitUser(Instance, New, "Server is full");
 818                 return;
 819         }
 820 #endif
 821
 822         New->exempt = (Instance->XLines->matches_exception(New) != NULL);
 823         if (!New->exempt)
 824         {
 825                 ZLine* r = Instance->XLines->matches_zline(ipaddr);
 826                 if (r)
 827                 {
 828                         char reason[MAXBUF];
 829                         if (*Instance->Config->MoronBanner)
 830                                 New->WriteServ("NOTICE %s :*** %s", New->nick, Instance->Config->MoronBanner);
 831                         snprintf(reason,MAXBUF,"Z-Lined: %s",r->reason);
 832                         User::QuitUser(Instance, New, reason);
 833                         return;
 834                 }
 835         }
 836
 837         if (socket > -1)
 838         {
 839                 if (!Instance->SE->AddFd(New))
 840                 {
 841                         Instance->Log(DEBUG,"Internal error on new connection");
 842                         User::QuitUser(Instance, New, "Internal error handling connection");
 843                 }
 844         }
 845
 846         /* NOTE: even if dns lookups are *off*, we still need to display this.
 847          * BOPM and other stuff requires it.
 848          */
 849         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 850 }
 851
 852 unsigned long User::GlobalCloneCount()
 853 {
 854         clonemap::iterator x = ServerInstance->global_clones.find(this->GetIPString());
 855         if (x != ServerInstance->global_clones.end())
 856                 return x->second;
 857         else
 858                 return 0;
 859 }
 860
 861 unsigned long User::LocalCloneCount()
 862 {
 863         clonemap::iterator x = ServerInstance->local_clones.find(this->GetIPString());
 864         if (x != ServerInstance->local_clones.end())
 865                 return x->second;
 866         else
 867                 return 0;
 868 }
 869
 870 /*
 871  * Check class restrictions
 872  */
 873 void User::CheckClass(const std::string &explicit_class)
 874 {
 875         ConnectClass* a = this->GetClass(explicit_class);
 876
 877         if ((!a) || (a->GetType() == CC_DENY))
 878         {
 879                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 880                 return;
 881         }
 882         else if ((a->GetMaxLocal()) && (this->LocalCloneCount() > a->GetMaxLocal()))
 883         {
 884                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 885                 ServerInstance->WriteOpers("*** WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 886                 return;
 887         }
 888         else if ((a->GetMaxGlobal()) && (this->GlobalCloneCount() > a->GetMaxGlobal()))
 889         {
 890                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 891                 ServerInstance->WriteOpers("*** WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 892                 return;
 893         }
 894
 895         this->pingmax = a->GetPingTime();
 896         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 897         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 898         this->flood = a->GetFlood();
 899         this->threshold = a->GetThreshold();
 900         this->sendqmax = a->GetSendqMax();
 901         this->recvqmax = a->GetRecvqMax();
 902         this->MaxChans = a->GetMaxChans();
 903 }
 904
 905 void User::FullConnect()
 906 {
 907         ServerInstance->stats->statsConnects++;
 908         this->idle_lastmsg = ServerInstance->Time();
 909
 910         /*
 911          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 912          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 913          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 914          * Don't remove this! -- w00t
 915          */
 916         this->CheckClass();
 917
 918         /* Check the password, if one is required by the user's connect class.
 919          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 920          */
 921         if ((!this->GetClass()->GetPass().empty()) && (!this->haspassed))
 922         {
 923                 User::QuitUser(ServerInstance, this, "Invalid password");
 924                 return;
 925         }
 926
 927         if (!this->exempt)
 928         {
 929                 GLine* r = ServerInstance->XLines->matches_gline(this);
 930
 931                 if (r)
 932                 {
 933                         this->muted = true;
 934                         char reason[MAXBUF];
 935                         if (*ServerInstance->Config->MoronBanner)
 936                                 this->WriteServ("NOTICE %s :*** %s", this->nick, ServerInstance->Config->MoronBanner);
 937                         snprintf(reason,MAXBUF,"G-Lined: %s",r->reason);
 938                         User::QuitUser(ServerInstance, this, reason);
 939                         return;
 940                 }
 941
 942                 KLine* n = ServerInstance->XLines->matches_kline(this);
 943
 944                 if (n)
 945                 {
 946                         this->muted = true;
 947                         char reason[MAXBUF];
 948                         if (*ServerInstance->Config->MoronBanner)
 949                                 this->WriteServ("NOTICE %s :*** %s", this, ServerInstance->Config->MoronBanner);
 950                         snprintf(reason,MAXBUF,"K-Lined: %s",n->reason);
 951                         User::QuitUser(ServerInstance, this, reason);
 952                         return;
 953                 }
 954         }
 955
 956         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 957         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 958         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 959         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 960         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());
 961
 962         ServerInstance->Config->Send005(this);
 963
 964         this->WriteServ("042 %s %s :your unique ID", this->nick, this->uuid);
 965
 966
 967         this->ShowMOTD();
 968
 969         /* Now registered */
 970         if (ServerInstance->unregistered_count)
 971                 ServerInstance->unregistered_count--;
 972
 973         /* Trigger LUSERS output, give modules a chance too */
 974         int MOD_RESULT = 0;
 975         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 976         if (!MOD_RESULT)
 977                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 978
 979         /*
 980          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 981          * for a user that doesn't exist yet.
 982          */
 983         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 984
 985         this->registered = REG_ALL;
 986
 987         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 988
 989         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);
 990 }
 991
 992 /** User::UpdateNick()
 993  * re-allocates a nick in the user_hash after they change nicknames,
 994  * returns a pointer to the new user as it may have moved
 995  */
 996 User* User::UpdateNickHash(const char* New)
 997 {
 998         try
 999         {
1000                 //user_hash::iterator newnick;
1001                 user_hash::iterator oldnick = ServerInstance->clientlist->find(this->nick);
1002
1003                 if (!strcasecmp(this->nick,New))
1004                         return oldnick->second;
1005
1006                 if (oldnick == ServerInstance->clientlist->end())
1007                         return NULL; /* doesnt exist */
1008
1009                 User* olduser = oldnick->second;
1010                 (*(ServerInstance->clientlist))[New] = olduser;
1011                 ServerInstance->clientlist->erase(oldnick);
1012                 return olduser;
1013         }
1014
1015         catch (...)
1016         {
1017                 ServerInstance->Log(DEBUG,"Exception in User::UpdateNickHash()");
1018                 return NULL;
1019         }
1020 }
1021
1022 void User::InvalidateCache()
1023 {
1024         /* Invalidate cache */
1025         if (cached_fullhost)
1026                 free(cached_fullhost);
1027         if (cached_hostip)
1028                 free(cached_hostip);
1029         if (cached_makehost)
1030                 free(cached_makehost);
1031         if (cached_fullrealhost)
1032                 free(cached_fullrealhost);
1033         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
1034 }
1035
1036 bool User::ForceNickChange(const char* newnick)
1037 {
1038         try
1039         {
1040                 int MOD_RESULT = 0;
1041
1042                 this->InvalidateCache();
1043
1044                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1045
1046                 if (MOD_RESULT)
1047                 {
1048                         ServerInstance->stats->statsCollisions++;
1049                         return false;
1050                 }
1051
1052                 if (ServerInstance->XLines->matches_qline(newnick))
1053                 {
1054                         ServerInstance->stats->statsCollisions++;
1055                         return false;
1056                 }
1057
1058                 if (this->registered == REG_ALL)
1059                 {
1060                         std::deque<classbase*> dummy;
1061                         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1062                         if (nickhandler)
1063                         {
1064                                 nickhandler->HandleInternal(1, dummy);
1065                                 bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
1066                                 nickhandler->HandleInternal(0, dummy);
1067                                 return result;
1068                         }
1069                 }
1070                 return false;
1071         }
1072
1073         catch (...)
1074         {
1075                 ServerInstance->Log(DEBUG,"Exception in User::ForceNickChange()");
1076                 return false;
1077         }
1078 }
1079
1080 void User::SetSockAddr(int protocol_family, const char* ip, int port)
1081 {
1082         switch (protocol_family)
1083         {
1084 #ifdef SUPPORT_IP6LINKS
1085                 case AF_INET6:
1086                 {
1087                         sockaddr_in6* sin = new sockaddr_in6;
1088                         sin->sin6_family = AF_INET6;
1089                         sin->sin6_port = port;
1090                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
1091                         this->ip = (sockaddr*)sin;
1092                 }
1093                 break;
1094 #endif
1095                 case AF_INET:
1096                 {
1097                         sockaddr_in* sin = new sockaddr_in;
1098                         sin->sin_family = AF_INET;
1099                         sin->sin_port = port;
1100                         inet_pton(AF_INET, ip, &sin->sin_addr);
1101                         this->ip = (sockaddr*)sin;
1102                 }
1103                 break;
1104                 default:
1105                         ServerInstance->Log(DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1106                 break;
1107         }
1108 }
1109
1110 int User::GetPort()
1111 {
1112         if (this->ip == NULL)
1113                 return 0;
1114
1115         switch (this->GetProtocolFamily())
1116         {
1117 #ifdef SUPPORT_IP6LINKS
1118                 case AF_INET6:
1119                 {
1120                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1121                         return sin->sin6_port;
1122                 }
1123                 break;
1124 #endif
1125                 case AF_INET:
1126                 {
1127                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1128                         return sin->sin_port;
1129                 }
1130                 break;
1131                 default:
1132                 break;
1133         }
1134         return 0;
1135 }
1136
1137 int User::GetProtocolFamily()
1138 {
1139         if (this->ip == NULL)
1140                 return 0;
1141
1142         sockaddr_in* sin = (sockaddr_in*)this->ip;
1143         return sin->sin_family;
1144 }
1145
1146 /*
1147  * XXX the duplication here is horrid..
1148  * do we really need two methods doing essentially the same thing?
1149  */
1150 const char* User::GetIPString()
1151 {
1152         static char buf[1024];
1153
1154         if (this->ip == NULL)
1155                 return "";
1156
1157         switch (this->GetProtocolFamily())
1158         {
1159 #ifdef SUPPORT_IP6LINKS
1160                 case AF_INET6:
1161                 {
1162                         static char temp[1024];
1163
1164                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1165                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1166                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1167                         if (*buf == ':')
1168                         {
1169                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1170                                 *temp = '0';
1171                                 return temp;
1172                         }
1173                         return buf;
1174                 }
1175                 break;
1176 #endif
1177                 case AF_INET:
1178                 {
1179                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1180                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1181                         return buf;
1182                 }
1183                 break;
1184                 default:
1185                 break;
1186         }
1187         return "";
1188 }
1189
1190 /** NOTE: We cannot pass a const reference to this method.
1191  * The string is changed by the workings of the method,
1192  * so that if we pass const ref, we end up copying it to
1193  * something we can change anyway. Makes sense to just let
1194  * the compiler do that copy for us.
1195  */
1196 void User::Write(std::string text)
1197 {
1198         if (!ServerInstance->SE->BoundsCheckFd(this))
1199                 return;
1200
1201         try
1202         {
1203                 /* ServerInstance->Log(DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1204                  * WARNING: The above debug line is VERY loud, do NOT
1205                  * enable it till we have a good way of filtering it
1206                  * out of the logs (e.g. 1.2 would be good).
1207                  */
1208                 text.append("\r\n");
1209         }
1210         catch (...)
1211         {
1212                 ServerInstance->Log(DEBUG,"Exception in User::Write() std::string::append");
1213                 return;
1214         }
1215
1216         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1217         {
1218                 try
1219                 {
1220                         /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1221                          * implement their own buffering mechanisms
1222                          */
1223                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1224                 }
1225                 catch (CoreException& modexcept)
1226                 {
1227                         ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1228                 }
1229         }
1230         else
1231         {
1232                 this->AddWriteBuf(text);
1233         }
1234         ServerInstance->stats->statsSent += text.length();
1235         this->ServerInstance->SE->WantWrite(this);
1236 }
1237
1238 /** Write()
1239  */
1240 void User::Write(const char *text, ...)
1241 {
1242         va_list argsPtr;
1243         char textbuffer[MAXBUF];
1244
1245         va_start(argsPtr, text);
1246         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1247         va_end(argsPtr);
1248
1249         this->Write(std::string(textbuffer));
1250 }
1251
1252 void User::WriteServ(const std::string& text)
1253 {
1254         char textbuffer[MAXBUF];
1255
1256         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1257         this->Write(std::string(textbuffer));
1258 }
1259
1260 /** WriteServ()
1261  *  Same as Write(), except `text' is prefixed with `:server.name '.
1262  */
1263 void User::WriteServ(const char* text, ...)
1264 {
1265         va_list argsPtr;
1266         char textbuffer[MAXBUF];
1267
1268         va_start(argsPtr, text);
1269         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1270         va_end(argsPtr);
1271
1272         this->WriteServ(std::string(textbuffer));
1273 }
1274
1275
1276 void User::WriteFrom(User *user, const std::string &text)
1277 {
1278         char tb[MAXBUF];
1279
1280         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1281
1282         this->Write(std::string(tb));
1283 }
1284
1285
1286 /* write text from an originating user to originating user */
1287
1288 void User::WriteFrom(User *user, const char* text, ...)
1289 {
1290         va_list argsPtr;
1291         char textbuffer[MAXBUF];
1292
1293         va_start(argsPtr, text);
1294         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1295         va_end(argsPtr);
1296
1297         this->WriteFrom(user, std::string(textbuffer));
1298 }
1299
1300
1301 /* write text to an destination user from a source user (e.g. user privmsg) */
1302
1303 void User::WriteTo(User *dest, const char *data, ...)
1304 {
1305         char textbuffer[MAXBUF];
1306         va_list argsPtr;
1307
1308         va_start(argsPtr, data);
1309         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1310         va_end(argsPtr);
1311
1312         this->WriteTo(dest, std::string(textbuffer));
1313 }
1314
1315 void User::WriteTo(User *dest, const std::string &data)
1316 {
1317         dest->WriteFrom(this, data);
1318 }
1319
1320
1321 void User::WriteCommon(const char* text, ...)
1322 {
1323         char textbuffer[MAXBUF];
1324         va_list argsPtr;
1325
1326         if (this->registered != REG_ALL)
1327                 return;
1328
1329         va_start(argsPtr, text);
1330         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1331         va_end(argsPtr);
1332
1333         this->WriteCommon(std::string(textbuffer));
1334 }
1335
1336 void User::WriteCommon(const std::string &text)
1337 {
1338         try
1339         {
1340                 bool sent_to_at_least_one = false;
1341                 char tb[MAXBUF];
1342
1343                 if (this->registered != REG_ALL)
1344                         return;
1345
1346                 uniq_id++;
1347
1348                 /* We dont want to be doing this n times, just once */
1349                 snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1350                 std::string out = tb;
1351
1352                 for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1353                 {
1354                         CUList* ulist = v->first->GetUsers();
1355                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1356                         {
1357                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1358                                 {
1359                                         already_sent[i->first->fd] = uniq_id;
1360                                         i->first->Write(out);
1361                                         sent_to_at_least_one = true;
1362                                 }
1363                         }
1364                 }
1365
1366                 /*
1367                  * if the user was not in any channels, no users will receive the text. Make sure the user
1368                  * receives their OWN message for WriteCommon
1369                  */
1370                 if (!sent_to_at_least_one)
1371                 {
1372                         this->Write(std::string(tb));
1373                 }
1374         }
1375
1376         catch (...)
1377         {
1378                 ServerInstance->Log(DEBUG,"Exception in User::WriteCommon()");
1379         }
1380 }
1381
1382
1383 /* write a formatted string to all users who share at least one common
1384  * channel, NOT including the source user e.g. for use in QUIT
1385  */
1386
1387 void User::WriteCommonExcept(const char* text, ...)
1388 {
1389         char textbuffer[MAXBUF];
1390         va_list argsPtr;
1391
1392         va_start(argsPtr, text);
1393         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1394         va_end(argsPtr);
1395
1396         this->WriteCommonExcept(std::string(textbuffer));
1397 }
1398
1399 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1400 {
1401         char tb1[MAXBUF];
1402         char tb2[MAXBUF];
1403
1404         if (this->registered != REG_ALL)
1405                 return;
1406
1407         uniq_id++;
1408         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1409         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1410         std::string out1 = tb1;
1411         std::string out2 = tb2;
1412
1413         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1414         {
1415                 CUList *ulist = v->first->GetUsers();
1416                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1417                 {
1418                         if (this != i->first)
1419                         {
1420                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1421                                 {
1422                                         already_sent[i->first->fd] = uniq_id;
1423                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1424                                 }
1425                         }
1426                 }
1427         }
1428 }
1429
1430 void User::WriteCommonExcept(const std::string &text)
1431 {
1432         char tb1[MAXBUF];
1433         std::string out1;
1434
1435         if (this->registered != REG_ALL)
1436                 return;
1437
1438         uniq_id++;
1439         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1440         out1 = tb1;
1441
1442         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1443         {
1444                 CUList *ulist = v->first->GetUsers();
1445                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1446                 {
1447                         if (this != i->first)
1448                         {
1449                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1450                                 {
1451                                         already_sent[i->first->fd] = uniq_id;
1452                                         i->first->Write(out1);
1453                                 }
1454                         }
1455                 }
1456         }
1457
1458 }
1459
1460 void User::WriteWallOps(const std::string &text)
1461 {
1462         if (!IS_OPER(this) && IS_LOCAL(this))
1463                 return;
1464
1465         std::string wallop("WALLOPS :");
1466         wallop.append(text);
1467
1468         for (std::vector<User*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1469         {
1470                 User* t = *i;
1471                 if (t->IsModeSet('w'))
1472                         this->WriteTo(t,wallop);
1473         }
1474 }
1475
1476 void User::WriteWallOps(const char* text, ...)
1477 {
1478         char textbuffer[MAXBUF];
1479         va_list argsPtr;
1480
1481         va_start(argsPtr, text);
1482         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1483         va_end(argsPtr);
1484
1485         this->WriteWallOps(std::string(textbuffer));
1486 }
1487
1488 /* return 0 or 1 depending if users u and u2 share one or more common channels
1489  * (used by QUIT, NICK etc which arent channel specific notices)
1490  *
1491  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1492  * the first users channels then the second users channels within the outer loop,
1493  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1494  * all possible iterations). However this new function instead checks against the
1495  * channel's userlist in the inner loop which is a std::map<User*,User*>
1496  * and saves us time as we already know what pointer value we are after.
1497  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1498  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1499  */
1500 bool User::SharesChannelWith(User *other)
1501 {
1502         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1503                 return false;
1504
1505         /* Outer loop */
1506         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1507         {
1508                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1509                  * by replacing it with a map::find which *should* be more efficient
1510                  */
1511                 if (i->first->HasUser(other))
1512                         return true;
1513         }
1514         return false;
1515 }
1516
1517 bool User::ChangeName(const char* gecos)
1518 {
1519         if (!strcmp(gecos, this->fullname))
1520                 return true;
1521
1522         if (IS_LOCAL(this))
1523         {
1524                 int MOD_RESULT = 0;
1525                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1526                 if (MOD_RESULT)
1527                         return false;
1528                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1529         }
1530         strlcpy(this->fullname,gecos,MAXGECOS+1);
1531
1532         return true;
1533 }
1534
1535 bool User::ChangeDisplayedHost(const char* host)
1536 {
1537         if (!strcmp(host, this->dhost))
1538                 return true;
1539
1540         if (IS_LOCAL(this))
1541         {
1542                 int MOD_RESULT = 0;
1543                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1544                 if (MOD_RESULT)
1545                         return false;
1546                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1547         }
1548         if (this->ServerInstance->Config->CycleHosts)
1549                 this->WriteCommonExcept("QUIT :Changing hosts");
1550
1551         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1552         strlcpy(this->dhost,host,64);
1553
1554         this->InvalidateCache();
1555
1556         if (this->ServerInstance->Config->CycleHosts)
1557         {
1558                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1559                 {
1560                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1561                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1562                         if (n.length() > 0)
1563                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1564                 }
1565         }
1566
1567         if (IS_LOCAL(this))
1568                 this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost);
1569
1570         return true;
1571 }
1572
1573 bool User::ChangeIdent(const char* newident)
1574 {
1575         if (!strcmp(newident, this->ident))
1576                 return true;
1577
1578         if (this->ServerInstance->Config->CycleHosts)
1579                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1580
1581         strlcpy(this->ident, newident, IDENTMAX+2);
1582
1583         this->InvalidateCache();
1584
1585         if (this->ServerInstance->Config->CycleHosts)
1586         {
1587                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1588                 {
1589                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1590                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1591                         if (n.length() > 0)
1592                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1593                 }
1594         }
1595
1596         return true;
1597 }
1598
1599 void User::SendAll(const char* command, char* text, ...)
1600 {
1601         char textbuffer[MAXBUF];
1602         char formatbuffer[MAXBUF];
1603         va_list argsPtr;
1604
1605         va_start(argsPtr, text);
1606         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1607         va_end(argsPtr);
1608
1609         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1610         std::string fmt = formatbuffer;
1611
1612         for (std::vector<User*>::const_iterator i = ServerInstance->local_users.begin(); i != ServerInstance->local_users.end(); i++)
1613         {
1614                 (*i)->Write(fmt);
1615         }
1616 }
1617
1618
1619 std::string User::ChannelList(User* source)
1620 {
1621         try
1622         {
1623                 std::string list;
1624                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1625                 {
1626                         /* If the target is the same as the sender, let them see all their channels.
1627                          * If the channel is NOT private/secret OR the user shares a common channel
1628                          * If the user is an oper, and the <options:operspywhois> option is set.
1629                          */
1630                         if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1631                         {
1632                                 list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1633                         }
1634                 }
1635                 return list;
1636         }
1637         catch (...)
1638         {
1639                 ServerInstance->Log(DEBUG,"Exception in User::ChannelList()");
1640                 return "";
1641         }
1642 }
1643
1644 void User::SplitChanList(User* dest, const std::string &cl)
1645 {
1646         std::string line;
1647         std::ostringstream prefix;
1648         std::string::size_type start, pos, length;
1649
1650         try
1651         {
1652                 prefix << this->nick << " " << dest->nick << " :";
1653                 line = prefix.str();
1654                 int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1655
1656                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1657                 {
1658                         length = (pos == std::string::npos) ? cl.length() : pos;
1659
1660                         if (line.length() + namelen + length - start > 510)
1661                         {
1662                                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1663                                 line = prefix.str();
1664                         }
1665
1666                         if(pos == std::string::npos)
1667                         {
1668                                 line.append(cl.substr(start, length - start));
1669                                 break;
1670                         }
1671                         else
1672                         {
1673                                 line.append(cl.substr(start, length - start + 1));
1674                         }
1675                 }
1676
1677                 if (line.length())
1678                 {
1679                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1680                 }
1681         }
1682
1683         catch (...)
1684         {
1685                 ServerInstance->Log(DEBUG,"Exception in User::SplitChanList()");
1686         }
1687 }
1688
1689 unsigned int User::GetMaxChans()
1690 {
1691         return this->MaxChans;
1692 }
1693
1694 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1695  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1696  * then their ip will be taken as 'priority' anyway, so for example,
1697  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1698  */
1699 ConnectClass* User::GetClass(const std::string &explicit_name)
1700 {
1701         if (!explicit_name.empty())
1702         {
1703                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1704                 {
1705                         if (explicit_name == i->GetName())
1706                                 return &(*i);
1707                 }
1708         }
1709         else
1710         {
1711                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1712                 {
1713                         if (((match(this->GetIPString(),i->GetHost().c_str(),true)) || (match(this->host,i->GetHost().c_str()))))
1714                         {
1715                                 if (i->GetPort())
1716                                 {
1717                                         if (this->GetPort() == i->GetPort())
1718                                                 return &(*i);
1719                                         else
1720                                                 continue;
1721                                 }
1722                                 else
1723                                         return &(*i);
1724                         }
1725                 }
1726         }
1727         return NULL;
1728 }
1729
1730 void User::PurgeEmptyChannels()
1731 {
1732         std::vector<Channel*> to_delete;
1733
1734         // firstly decrement the count on each channel
1735         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1736         {
1737                 f->first->RemoveAllPrefixes(this);
1738                 if (f->first->DelUser(this) == 0)
1739                 {
1740                         /* No users left in here, mark it for deletion */
1741                         try
1742                         {
1743                                 to_delete.push_back(f->first);
1744                         }
1745                         catch (...)
1746                         {
1747                                 ServerInstance->Log(DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1748                         }
1749                 }
1750         }
1751
1752         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1753         {
1754                 Channel* thischan = *n;
1755                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1756                 if (i2 != ServerInstance->chanlist->end())
1757                 {
1758                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1759                         DELETE(i2->second);
1760                         ServerInstance->chanlist->erase(i2);
1761                         this->chans.erase(*n);
1762                 }
1763         }
1764
1765         this->UnOper();
1766 }
1767
1768 void User::ShowMOTD()
1769 {
1770         if (!ServerInstance->Config->MOTD.size())
1771         {
1772                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1773                 return;
1774         }
1775         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1776
1777         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1778                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
1779
1780         this->WriteServ("376 %s :End of message of the day.", this->nick);
1781 }
1782
1783 void User::ShowRULES()
1784 {
1785         if (!ServerInstance->Config->RULES.size())
1786         {
1787                 this->WriteServ("434 %s :RULES File is missing",this->nick);
1788                 return;
1789         }
1790
1791         this->WriteServ("308 %s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1792
1793         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1794                 this->WriteServ("232 %s :- %s",this->nick,i->c_str());
1795
1796         this->WriteServ("309 %s :End of RULES command.",this->nick);
1797 }
1798
1799 void User::HandleEvent(EventType et, int errornum)
1800 {
1801         /* WARNING: May delete this user! */
1802         int thisfd = this->GetFd();
1803
1804         try
1805         {
1806                 switch (et)
1807                 {
1808                         case EVENT_READ:
1809                                 ServerInstance->ProcessUser(this);
1810                         break;
1811                         case EVENT_WRITE:
1812                                 this->FlushWriteBuf();
1813                         break;
1814                         case EVENT_ERROR:
1815                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1816                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1817                         break;
1818                 }
1819         }
1820         catch (...)
1821         {
1822                 ServerInstance->Log(DEBUG,"Exception in User::HandleEvent intercepted");
1823         }
1824
1825         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1826         if ((ServerInstance->SE->GetRef(thisfd) == this))
1827         {
1828                 if (!WriteError.empty())
1829                 {
1830                         User::QuitUser(ServerInstance, this, GetWriteError());
1831                 }
1832         }
1833 }
1834
1835 void User::SetOperQuit(const std::string &oquit)
1836 {
1837         if (operquit)
1838                 return;
1839
1840         operquit = strdup(oquit.c_str());
1841 }
1842
1843 const char* User::GetOperQuit()
1844 {
1845         return operquit ? operquit : "";
1846 }
1847
1848 VisData::VisData()
1849 {
1850 }
1851
1852 VisData::~VisData()
1853 {
1854 }
1855
1856 bool VisData::VisibleTo(User* user)
1857 {
1858         return true;
1859 }
1860