src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core: libIRCDusers */
  15
  16 #include "inspircd.h"
  17 #include <stdarg.h>
  18 #include "socketengine.h"
  19 #include "wildcard.h"
  20 #include "xline.h"
  21 #include "bancache.h"
  22 #include "commands/cmd_whowas.h"
  23
  24 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  25
  26 /* XXX: Used for speeding up WriteCommon operations */
  27 unsigned long uniq_id = 0;
  28
  29 std::string User::ProcessNoticeMasks(const char *sm)
  30 {
  31         bool adding = true, oldadding = false;
  32         const char *c = sm;
  33         std::string output;
  34
  35         while (c && *c)
  36         {
  37                 switch (*c)
  38                 {
  39                         case '+':
  40                                 adding = true;
  41                         break;
  42                         case '-':
  43                                 adding = false;
  44                         break;
  45                         case '*':
  46                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  47                                 {
  48                                         if (ServerInstance->SNO->IsEnabled(d))
  49                                         {
  50                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  51                                                 {
  52                                                         if ((oldadding != adding) || (!output.length()))
  53                                                                 output += (adding ? '+' : '-');
  54
  55                                                         this->SetNoticeMask(d, adding);
  56
  57                                                         output += d;
  58                                                 }
  59                                         }
  60                                         oldadding = adding;
  61                                 }
  62                         break;
  63                         default:
  64                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  65                                 {
  66                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  67                                         {
  68                                                 if ((oldadding != adding) || (!output.length()))
  69                                                         output += (adding ? '+' : '-');
  70
  71                                                 this->SetNoticeMask(*c, adding);
  72
  73                                                 output += *c;
  74                                         }
  75                                 }
  76                                 else
  77                                         this->WriteServ("501 %s %c :is unknown snomask char to me", this->nick, *c);
  78
  79                                 oldadding = adding;
  80                         break;
  81                 }
  82
  83                 *c++;
  84         }
  85
  86         return output;
  87 }
  88
  89 void User::StartDNSLookup()
  90 {
  91         try
  92         {
  93                 bool cached;
  94                 const char* sip = this->GetIPString();
  95
  96                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
  97                 if (!strncmp(sip, "0::ffff:", 8))
  98                         res_reverse = new UserResolver(this->ServerInstance, this, sip + 8, DNS_QUERY_PTR4, cached);
  99                 else
 100                         res_reverse = new UserResolver(this->ServerInstance, this, sip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 101
 102                 this->ServerInstance->AddResolver(res_reverse, cached);
 103         }
 104         catch (CoreException& e)
 105         {
 106                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 107         }
 108 }
 109
 110 bool User::IsNoticeMaskSet(unsigned char sm)
 111 {
 112         return (snomasks[sm-65]);
 113 }
 114
 115 void User::SetNoticeMask(unsigned char sm, bool value)
 116 {
 117         snomasks[sm-65] = value;
 118 }
 119
 120 const char* User::FormatNoticeMasks()
 121 {
 122         static char data[MAXBUF];
 123         int offset = 0;
 124
 125         for (int n = 0; n < 64; n++)
 126         {
 127                 if (snomasks[n])
 128                         data[offset++] = n+65;
 129         }
 130
 131         data[offset] = 0;
 132         return data;
 133 }
 134
 135
 136
 137 bool User::IsModeSet(unsigned char m)
 138 {
 139         return (modes[m-65]);
 140 }
 141
 142 void User::SetMode(unsigned char m, bool value)
 143 {
 144         modes[m-65] = value;
 145 }
 146
 147 const char* User::FormatModes()
 148 {
 149         static char data[MAXBUF];
 150         int offset = 0;
 151         for (int n = 0; n < 64; n++)
 152         {
 153                 if (modes[n])
 154                         data[offset++] = n+65;
 155         }
 156         data[offset] = 0;
 157         return data;
 158 }
 159
 160 void User::DecrementModes()
 161 {
 162         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 163         for (unsigned char n = 'A'; n <= 'z'; n++)
 164         {
 165                 if (modes[n-65])
 166                 {
 167                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 168                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 169                         if (mh)
 170                         {
 171                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 172                                 mh->ChangeCount(-1);
 173                         }
 174                 }
 175         }
 176 }
 177
 178 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 179 {
 180         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 181         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 182         reset_due = ServerInstance->Time();
 183         age = ServerInstance->Time();
 184         Penalty = 0;
 185         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 186         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 187         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 188         fd = -1;
 189         recvq.clear();
 190         sendq.clear();
 191         WriteError.clear();
 192         res_forward = res_reverse = NULL;
 193         Visibility = NULL;
 194         ip = NULL;
 195         MyClass = NULL;
 196         AllowedOperCommands = NULL;
 197         chans.clear();
 198         invites.clear();
 199         memset(modes,0,sizeof(modes));
 200         memset(snomasks,0,sizeof(snomasks));
 201         /* Invalidate cache */
 202         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 203
 204         if (uid.empty())
 205                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 206         else
 207                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 208
 209         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 210
 211         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 212         if (finduuid == Instance->Users->uuidlist->end())
 213                 (*Instance->Users->uuidlist)[uuid] = this;
 214         else
 215                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 216 }
 217
 218 User::~User()
 219 {
 220         /* NULL for remote users :) */
 221         if (this->MyClass)
 222         {
 223                 this->MyClass->RefCount--;
 224                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %u", this->MyClass->RefCount);
 225         }
 226         if (this->AllowedOperCommands)
 227         {
 228                 delete AllowedOperCommands;
 229                 AllowedOperCommands = NULL;
 230         }
 231
 232         this->InvalidateCache();
 233         this->DecrementModes();
 234
 235         if (ip)
 236         {
 237                 ServerInstance->Users->RemoveCloneCounts(this);
 238
 239                 if (this->GetProtocolFamily() == AF_INET)
 240                 {
 241                         delete (sockaddr_in*)ip;
 242                 }
 243 #ifdef SUPPORT_IP6LINKS
 244                 else
 245                 {
 246                         delete (sockaddr_in6*)ip;
 247                 }
 248 #endif
 249         }
 250
 251         ServerInstance->Users->uuidlist->erase(uuid);
 252 }
 253
 254 char* User::MakeHost()
 255 {
 256         if (this->cached_makehost)
 257                 return this->cached_makehost;
 258
 259         char nhost[MAXBUF];
 260         /* This is much faster than snprintf */
 261         char* t = nhost;
 262         for(char* n = ident; *n; n++)
 263                 *t++ = *n;
 264         *t++ = '@';
 265         for(char* n = host; *n; n++)
 266                 *t++ = *n;
 267         *t = 0;
 268
 269         this->cached_makehost = strdup(nhost);
 270
 271         return this->cached_makehost;
 272 }
 273
 274 char* User::MakeHostIP()
 275 {
 276         if (this->cached_hostip)
 277                 return this->cached_hostip;
 278
 279         char ihost[MAXBUF];
 280         /* This is much faster than snprintf */
 281         char* t = ihost;
 282         for(char* n = ident; *n; n++)
 283                 *t++ = *n;
 284         *t++ = '@';
 285         for(const char* n = this->GetIPString(); *n; n++)
 286                 *t++ = *n;
 287         *t = 0;
 288
 289         this->cached_hostip = strdup(ihost);
 290
 291         return this->cached_hostip;
 292 }
 293
 294 void User::CloseSocket()
 295 {
 296         ServerInstance->SE->Shutdown(this, 2);
 297         ServerInstance->SE->Close(this);
 298 }
 299
 300 char* User::GetFullHost()
 301 {
 302         if (this->cached_fullhost)
 303                 return this->cached_fullhost;
 304
 305         char result[MAXBUF];
 306         char* t = result;
 307         for(char* n = nick; *n; n++)
 308                 *t++ = *n;
 309         *t++ = '!';
 310         for(char* n = ident; *n; n++)
 311                 *t++ = *n;
 312         *t++ = '@';
 313         for(char* n = dhost; *n; n++)
 314                 *t++ = *n;
 315         *t = 0;
 316
 317         this->cached_fullhost = strdup(result);
 318
 319         return this->cached_fullhost;
 320 }
 321
 322 char* User::MakeWildHost()
 323 {
 324         static char nresult[MAXBUF];
 325         char* t = nresult;
 326         *t++ = '*';     *t++ = '!';
 327         *t++ = '*';     *t++ = '@';
 328         for(char* n = dhost; *n; n++)
 329                 *t++ = *n;
 330         *t = 0;
 331         return nresult;
 332 }
 333
 334 int User::ReadData(void* buffer, size_t size)
 335 {
 336         if (IS_LOCAL(this))
 337         {
 338 #ifndef WIN32
 339                 return read(this->fd, buffer, size);
 340 #else
 341                 return recv(this->fd, (char*)buffer, size, 0);
 342 #endif
 343         }
 344         else
 345                 return 0;
 346 }
 347
 348
 349 char* User::GetFullRealHost()
 350 {
 351         if (this->cached_fullrealhost)
 352                 return this->cached_fullrealhost;
 353
 354         char fresult[MAXBUF];
 355         char* t = fresult;
 356         for(char* n = nick; *n; n++)
 357                 *t++ = *n;
 358         *t++ = '!';
 359         for(char* n = ident; *n; n++)
 360                 *t++ = *n;
 361         *t++ = '@';
 362         for(char* n = host; *n; n++)
 363                 *t++ = *n;
 364         *t = 0;
 365
 366         this->cached_fullrealhost = strdup(fresult);
 367
 368         return this->cached_fullrealhost;
 369 }
 370
 371 bool User::IsInvited(const irc::string &channel)
 372 {
 373         time_t now = time(NULL);
 374         InvitedList::iterator safei;
 375         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 376         {
 377                 if (channel == i->first)
 378                 {
 379                         if (i->second != 0 && now > i->second)
 380                         {
 381                                 /* Expired invite, remove it. */
 382                                 safei = i;
 383                                 --i;
 384                                 invites.erase(safei);
 385                                 continue;
 386                         }
 387                         return true;
 388                 }
 389         }
 390         return false;
 391 }
 392
 393 InvitedList* User::GetInviteList()
 394 {
 395         time_t now = time(NULL);
 396         /* Weed out expired invites here. */
 397         InvitedList::iterator safei;
 398         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 399         {
 400                 if (i->second != 0 && now > i->second)
 401                 {
 402                         /* Expired invite, remove it. */
 403                         safei = i;
 404                         --i;
 405                         invites.erase(safei);
 406                 }
 407         }
 408         return &invites;
 409 }
 410
 411 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 412 {
 413         time_t now = time(NULL);
 414         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 415         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 416         {
 417                 if (channel == i->first)
 418                 {
 419                         if (i->second != 0 && invtimeout > i->second)
 420                         {
 421                                 i->second = invtimeout;
 422                         }
 423                 }
 424         }
 425         invites.push_back(std::make_pair(channel, invtimeout));
 426 }
 427
 428 void User::RemoveInvite(const irc::string &channel)
 429 {
 430         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 431         {
 432                 if (channel == i->first)
 433                 {
 434                         invites.erase(i);
 435                         return;
 436                 }
 437         }
 438 }
 439
 440 bool User::HasPermission(const std::string &command)
 441 {
 442         /*
 443          * users on remote servers can completely bypass all permissions based checks.
 444          * This prevents desyncs when one server has different type/class tags to another.
 445          * That having been said, this does open things up to the possibility of source changes
 446          * allowing remote kills, etc - but if they have access to the src, they most likely have
 447          * access to the conf - so it's an end to a means either way.
 448          */
 449         if (!IS_LOCAL(this))
 450                 return true;
 451
 452         // are they even an oper at all?
 453         if (!IS_OPER(this))
 454         {
 455                 return false;
 456         }
 457
 458         if (!AllowedOperCommands)
 459                 return false;
 460
 461         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 462                 return true;
 463         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 464                 return true;
 465
 466         return false;
 467 }
 468
 469 /** NOTE: We cannot pass a const reference to this method.
 470  * The string is changed by the workings of the method,
 471  * so that if we pass const ref, we end up copying it to
 472  * something we can change anyway. Makes sense to just let
 473  * the compiler do that copy for us.
 474  */
 475 bool User::AddBuffer(std::string a)
 476 {
 477         try
 478         {
 479                 std::string::size_type i = a.rfind('\r');
 480
 481                 while (i != std::string::npos)
 482                 {
 483                         a.erase(i, 1);
 484                         i = a.rfind('\r');
 485                 }
 486
 487                 if (a.length())
 488                         recvq.append(a);
 489
 490                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 491                 {
 492                         this->SetWriteError("RecvQ exceeded");
 493                         ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->MyClass->GetRecvqMax());
 494                         return false;
 495                 }
 496
 497                 return true;
 498         }
 499
 500         catch (...)
 501         {
 502                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::AddBuffer()");
 503                 return false;
 504         }
 505 }
 506
 507 bool User::BufferIsReady()
 508 {
 509         return (recvq.find('\n') != std::string::npos);
 510 }
 511
 512 void User::ClearBuffer()
 513 {
 514         recvq.clear();
 515 }
 516
 517 std::string User::GetBuffer()
 518 {
 519         try
 520         {
 521                 if (recvq.empty())
 522                         return "";
 523
 524                 /* Strip any leading \r or \n off the string.
 525                  * Usually there are only one or two of these,
 526                  * so its is computationally cheap to do.
 527                  */
 528                 std::string::iterator t = recvq.begin();
 529                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 530                 {
 531                         recvq.erase(t);
 532                         t = recvq.begin();
 533                 }
 534
 535                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 536                 {
 537                         /* Find the first complete line, return it as the
 538                          * result, and leave the recvq as whats left
 539                          */
 540                         if (*x == '\n')
 541                         {
 542                                 std::string ret = std::string(recvq.begin(), x);
 543                                 recvq.erase(recvq.begin(), x + 1);
 544                                 return ret;
 545                         }
 546                 }
 547                 return "";
 548         }
 549
 550         catch (...)
 551         {
 552                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 553                 return "";
 554         }
 555 }
 556
 557 void User::AddWriteBuf(const std::string &data)
 558 {
 559         if (*this->GetWriteError())
 560                 return;
 561
 562         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 563         {
 564                 /*
 565                  * Fix by brain - Set the error text BEFORE calling, because
 566                  * if we dont it'll recursively  call here over and over again trying
 567                  * to repeatedly add the text to the sendq!
 568                  */
 569                 this->SetWriteError("SendQ exceeded");
 570                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->MyClass->GetSendqMax());
 571                 return;
 572         }
 573
 574         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 575                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 576         else
 577                 sendq.append(data);
 578 }
 579
 580 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 581 void User::FlushWriteBuf()
 582 {
 583         try
 584         {
 585                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 586                 {
 587                         sendq.clear();
 588                 }
 589                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 590                 {
 591                         int old_sendq_length = sendq.length();
 592                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 593
 594                         if (n_sent == -1)
 595                         {
 596                                 if (errno == EAGAIN)
 597                                 {
 598                                         /* The socket buffer is full. This isnt fatal,
 599                                          * try again later.
 600                                          */
 601                                         this->ServerInstance->SE->WantWrite(this);
 602                                 }
 603                                 else
 604                                 {
 605                                         /* Fatal error, set write error and bail
 606                                          */
 607                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 608                                         return;
 609                                 }
 610                         }
 611                         else
 612                         {
 613                                 /* advance the queue */
 614                                 if (n_sent)
 615                                         this->sendq = this->sendq.substr(n_sent);
 616                                 /* update the user's stats counters */
 617                                 this->bytes_out += n_sent;
 618                                 this->cmds_out++;
 619                                 if (n_sent != old_sendq_length)
 620                                         this->ServerInstance->SE->WantWrite(this);
 621                         }
 622                 }
 623         }
 624
 625         catch (...)
 626         {
 627                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 628         }
 629
 630         if (this->sendq.empty())
 631         {
 632                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 633         }
 634 }
 635
 636 void User::SetWriteError(const std::string &error)
 637 {
 638         // don't try to set the error twice, its already set take the first string.
 639         if (this->WriteError.empty())
 640                 this->WriteError = error;
 641 }
 642
 643 const char* User::GetWriteError()
 644 {
 645         return this->WriteError.c_str();
 646 }
 647
 648 void User::Oper(const std::string &opertype, const std::string &opername)
 649 {
 650         char* mycmd;
 651         char* savept;
 652         char* savept2;
 653
 654         try
 655         {
 656                 this->modes[UM_OPERATOR] = 1;
 657                 this->WriteServ("MODE %s :+o", this->nick);
 658                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 659                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 660                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 661                 ServerInstance->Users->all_opers.push_back(this);
 662
 663                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 664                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 665                 {
 666
 667                         if (AllowedOperCommands)
 668                                 AllowedOperCommands->clear();
 669                         else
 670                                 AllowedOperCommands = new std::map<std::string, bool>;
 671
 672                         char* Classes = strdup(iter_opertype->second);
 673                         char* myclass = strtok_r(Classes," ",&savept);
 674                         while (myclass)
 675                         {
 676                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 677                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 678                                 {
 679                                         char* CommandList = strdup(iter_operclass->second);
 680                                         mycmd = strtok_r(CommandList," ",&savept2);
 681                                         while (mycmd)
 682                                         {
 683                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 684                                                 mycmd = strtok_r(NULL," ",&savept2);
 685                                         }
 686                                         free(CommandList);
 687                                 }
 688                                 myclass = strtok_r(NULL," ",&savept);
 689                         }
 690                         free(Classes);
 691                 }
 692
 693                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 694         }
 695
 696         catch (...)
 697         {
 698                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 699         }
 700 }
 701
 702 void User::UnOper()
 703 {
 704         if (IS_OPER(this))
 705         {
 706                 // unset their oper type (what IS_OPER checks), and remove +o
 707                 *this->oper = 0;
 708                 this->modes[UM_OPERATOR] = 0;
 709
 710                 // remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404
 711                 ServerInstance->Users->all_opers.remove(this);
 712
 713                 if (AllowedOperCommands)
 714                 {
 715                         delete AllowedOperCommands;
 716                         AllowedOperCommands = NULL;
 717                 }
 718         }
 719 }
 720
 721 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 722 {
 723         Instance->Logs->Log("USERS", DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str());
 724         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str());
 725         user->quietquit = false;
 726         user->quitmsg = quitreason;
 727
 728         if (!*operreason)
 729                 user->operquitmsg = quitreason;
 730         else
 731                 user->operquitmsg = operreason;
 732
 733         Instance->GlobalCulls.AddItem(user);
 734 }
 735
 736 /* adds or updates an entry in the whowas list */
 737 void User::AddToWhoWas()
 738 {
 739         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 740         if (whowas_command)
 741         {
 742                 std::deque<classbase*> params;
 743                 params.push_back(this);
 744                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 745         }
 746 }
 747
 748 /*
 749  * Check class restrictions
 750  */
 751 void User::CheckClass()
 752 {
 753         ConnectClass* a = this->MyClass;
 754
 755         if ((!a) || (a->GetType() == CC_DENY))
 756         {
 757                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 758                 return;
 759         }
 760         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 761         {
 762                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 763                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 764                 return;
 765         }
 766         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 767         {
 768                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 769                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 770                 return;
 771         }
 772
 773         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 774         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 775         this->MaxChans = a->GetMaxChans();
 776 }
 777
 778 void User::FullConnect()
 779 {
 780         ServerInstance->stats->statsConnects++;
 781         this->idle_lastmsg = ServerInstance->Time();
 782
 783         /*
 784          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 785          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 786          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 787          * Don't remove this! -- w00t
 788          */
 789         this->SetClass();
 790
 791         /* Check the password, if one is required by the user's connect class.
 792          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 793          */
 794         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 795         {
 796                 User::QuitUser(ServerInstance, this, "Invalid password");
 797                 return;
 798         }
 799
 800         if (!this->exempt)
 801         {
 802                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 803
 804                 if (r)
 805                 {
 806                         r->Apply(this);
 807                         return;
 808                 }
 809
 810                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 811
 812                 if (n)
 813                 {
 814                         n->Apply(this);
 815                         return;
 816                 }
 817         }
 818
 819         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 820         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 821         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 822         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 823         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());
 824
 825         ServerInstance->Config->Send005(this);
 826
 827         this->WriteServ("042 %s %s :your unique ID", this->nick, this->uuid);
 828
 829
 830         this->ShowMOTD();
 831
 832         /* Now registered */
 833         if (ServerInstance->Users->unregistered_count)
 834                 ServerInstance->Users->unregistered_count--;
 835
 836         /* Trigger LUSERS output, give modules a chance too */
 837         int MOD_RESULT = 0;
 838         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 839         if (!MOD_RESULT)
 840                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 841
 842         /*
 843          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 844          * for a user that doesn't exist yet.
 845          */
 846         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 847
 848         this->registered = REG_ALL;
 849
 850         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 851
 852         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);
 853         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 854         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 855 }
 856
 857 /** User::UpdateNick()
 858  * re-allocates a nick in the user_hash after they change nicknames,
 859  * returns a pointer to the new user as it may have moved
 860  */
 861 User* User::UpdateNickHash(const char* New)
 862 {
 863         //user_hash::iterator newnick;
 864         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 865
 866         if (!strcasecmp(this->nick,New))
 867                 return oldnick->second;
 868
 869         if (oldnick == ServerInstance->Users->clientlist->end())
 870                 return NULL; /* doesnt exist */
 871
 872         User* olduser = oldnick->second;
 873         (*(ServerInstance->Users->clientlist))[New] = olduser;
 874         ServerInstance->Users->clientlist->erase(oldnick);
 875         return olduser;
 876 }
 877
 878 void User::InvalidateCache()
 879 {
 880         /* Invalidate cache */
 881         if (cached_fullhost)
 882                 free(cached_fullhost);
 883         if (cached_hostip)
 884                 free(cached_hostip);
 885         if (cached_makehost)
 886                 free(cached_makehost);
 887         if (cached_fullrealhost)
 888                 free(cached_fullrealhost);
 889         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 890 }
 891
 892 bool User::ForceNickChange(const char* newnick)
 893 {
 894         /*
 895          * XXX this makes no sense..
 896          * why do we do nothing for change on users not REG_ALL?
 897          * why do we trigger events twice for everyone previously (and just them now)
 898          * i think the first if () needs removing totally, or? -- w00t
 899          */
 900         if (this->registered != REG_ALL)
 901         {
 902                 int MOD_RESULT = 0;
 903
 904                 this->InvalidateCache();
 905
 906                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 907
 908                 if (MOD_RESULT)
 909                 {
 910                         ServerInstance->stats->statsCollisions++;
 911                         return false;
 912                 }
 913
 914                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
 915                 {
 916                         ServerInstance->stats->statsCollisions++;
 917                         return false;
 918                 }
 919         }
 920         else
 921         {
 922                 std::deque<classbase*> dummy;
 923                 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 924                 if (nickhandler) // wtfbbq, when would this not be here
 925                 {
 926                         nickhandler->HandleInternal(1, dummy);
 927                         bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
 928                         nickhandler->HandleInternal(0, dummy);
 929                         return result;
 930                 }
 931         }
 932
 933         // Unreachable.
 934         return false;
 935 }
 936
 937 void User::SetSockAddr(int protocol_family, const char* sip, int port)
 938 {
 939         this->cachedip = "";
 940
 941         switch (protocol_family)
 942         {
 943 #ifdef SUPPORT_IP6LINKS
 944                 case AF_INET6:
 945                 {
 946                         sockaddr_in6* sin = new sockaddr_in6;
 947                         sin->sin6_family = AF_INET6;
 948                         sin->sin6_port = port;
 949                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
 950                         this->ip = (sockaddr*)sin;
 951                 }
 952                 break;
 953 #endif
 954                 case AF_INET:
 955                 {
 956                         sockaddr_in* sin = new sockaddr_in;
 957                         sin->sin_family = AF_INET;
 958                         sin->sin_port = port;
 959                         inet_pton(AF_INET, sip, &sin->sin_addr);
 960                         this->ip = (sockaddr*)sin;
 961                 }
 962                 break;
 963                 default:
 964                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
 965                 break;
 966         }
 967 }
 968
 969 int User::GetPort()
 970 {
 971         if (this->ip == NULL)
 972                 return 0;
 973
 974         switch (this->GetProtocolFamily())
 975         {
 976 #ifdef SUPPORT_IP6LINKS
 977                 case AF_INET6:
 978                 {
 979                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
 980                         return sin->sin6_port;
 981                 }
 982                 break;
 983 #endif
 984                 case AF_INET:
 985                 {
 986                         sockaddr_in* sin = (sockaddr_in*)this->ip;
 987                         return sin->sin_port;
 988                 }
 989                 break;
 990                 default:
 991                 break;
 992         }
 993         return 0;
 994 }
 995
 996 int User::GetProtocolFamily()
 997 {
 998         if (this->ip == NULL)
 999                 return 0;
1000
1001         sockaddr_in* sin = (sockaddr_in*)this->ip;
1002         return sin->sin_family;
1003 }
1004
1005 /*
1006  * XXX the duplication here is horrid..
1007  * do we really need two methods doing essentially the same thing?
1008  */
1009 const char* User::GetIPString()
1010 {
1011         static char buf[1024];
1012
1013         if (this->ip == NULL)
1014                 return "";
1015
1016         if (!this->cachedip.empty())
1017                 return this->cachedip.c_str();
1018
1019         switch (this->GetProtocolFamily())
1020         {
1021 #ifdef SUPPORT_IP6LINKS
1022                 case AF_INET6:
1023                 {
1024                         static char temp[1024];
1025
1026                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1027                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1028                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1029                         if (*buf == ':')
1030                         {
1031                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1032                                 *temp = '0';
1033                                 this->cachedip = temp;
1034                                 return temp;
1035                         }
1036
1037                         this->cachedip = buf;
1038                         return buf;
1039                 }
1040                 break;
1041 #endif
1042                 case AF_INET:
1043                 {
1044                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1045                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1046                         this->cachedip = buf;
1047                         return buf;
1048                 }
1049                 break;
1050                 default:
1051                 break;
1052         }
1053
1054         // Unreachable, probably
1055         return "";
1056 }
1057
1058 /** NOTE: We cannot pass a const reference to this method.
1059  * The string is changed by the workings of the method,
1060  * so that if we pass const ref, we end up copying it to
1061  * something we can change anyway. Makes sense to just let
1062  * the compiler do that copy for us.
1063  */
1064 void User::Write(std::string text)
1065 {
1066         if (!ServerInstance->SE->BoundsCheckFd(this))
1067                 return;
1068
1069         try
1070         {
1071                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1072                 text.append("\r\n");
1073         }
1074         catch (...)
1075         {
1076                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1077                 return;
1078         }
1079
1080         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1081         {
1082                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1083                  * implement their own buffering mechanisms
1084                  */
1085                 try
1086                 {
1087                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1088                 }
1089                 catch (CoreException& modexcept)
1090                 {
1091                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1092                 }
1093         }
1094         else
1095         {
1096                 this->AddWriteBuf(text);
1097         }
1098         ServerInstance->stats->statsSent += text.length();
1099         this->ServerInstance->SE->WantWrite(this);
1100 }
1101
1102 /** Write()
1103  */
1104 void User::Write(const char *text, ...)
1105 {
1106         va_list argsPtr;
1107         char textbuffer[MAXBUF];
1108
1109         va_start(argsPtr, text);
1110         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1111         va_end(argsPtr);
1112
1113         this->Write(std::string(textbuffer));
1114 }
1115
1116 void User::WriteServ(const std::string& text)
1117 {
1118         char textbuffer[MAXBUF];
1119
1120         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1121         this->Write(std::string(textbuffer));
1122 }
1123
1124 /** WriteServ()
1125  *  Same as Write(), except `text' is prefixed with `:server.name '.
1126  */
1127 void User::WriteServ(const char* text, ...)
1128 {
1129         va_list argsPtr;
1130         char textbuffer[MAXBUF];
1131
1132         va_start(argsPtr, text);
1133         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1134         va_end(argsPtr);
1135
1136         this->WriteServ(std::string(textbuffer));
1137 }
1138
1139
1140 void User::WriteFrom(User *user, const std::string &text)
1141 {
1142         char tb[MAXBUF];
1143
1144         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1145
1146         this->Write(std::string(tb));
1147 }
1148
1149
1150 /* write text from an originating user to originating user */
1151
1152 void User::WriteFrom(User *user, const char* text, ...)
1153 {
1154         va_list argsPtr;
1155         char textbuffer[MAXBUF];
1156
1157         va_start(argsPtr, text);
1158         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1159         va_end(argsPtr);
1160
1161         this->WriteFrom(user, std::string(textbuffer));
1162 }
1163
1164
1165 /* write text to an destination user from a source user (e.g. user privmsg) */
1166
1167 void User::WriteTo(User *dest, const char *data, ...)
1168 {
1169         char textbuffer[MAXBUF];
1170         va_list argsPtr;
1171
1172         va_start(argsPtr, data);
1173         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1174         va_end(argsPtr);
1175
1176         this->WriteTo(dest, std::string(textbuffer));
1177 }
1178
1179 void User::WriteTo(User *dest, const std::string &data)
1180 {
1181         dest->WriteFrom(this, data);
1182 }
1183
1184
1185 void User::WriteCommon(const char* text, ...)
1186 {
1187         char textbuffer[MAXBUF];
1188         va_list argsPtr;
1189
1190         if (this->registered != REG_ALL)
1191                 return;
1192
1193         va_start(argsPtr, text);
1194         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1195         va_end(argsPtr);
1196
1197         this->WriteCommon(std::string(textbuffer));
1198 }
1199
1200 void User::WriteCommon(const std::string &text)
1201 {
1202         bool sent_to_at_least_one = false;
1203         char tb[MAXBUF];
1204
1205         if (this->registered != REG_ALL)
1206                 return;
1207
1208         uniq_id++;
1209
1210         /* We dont want to be doing this n times, just once */
1211         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1212         std::string out = tb;
1213
1214         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1215         {
1216                 CUList* ulist = v->first->GetUsers();
1217                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1218                 {
1219                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1220                         {
1221                                 already_sent[i->first->fd] = uniq_id;
1222                                 i->first->Write(out);
1223                                 sent_to_at_least_one = true;
1224                         }
1225                 }
1226         }
1227
1228         /*
1229          * if the user was not in any channels, no users will receive the text. Make sure the user
1230          * receives their OWN message for WriteCommon
1231          */
1232         if (!sent_to_at_least_one)
1233         {
1234                 this->Write(std::string(tb));
1235         }
1236 }
1237
1238
1239 /* write a formatted string to all users who share at least one common
1240  * channel, NOT including the source user e.g. for use in QUIT
1241  */
1242
1243 void User::WriteCommonExcept(const char* text, ...)
1244 {
1245         char textbuffer[MAXBUF];
1246         va_list argsPtr;
1247
1248         va_start(argsPtr, text);
1249         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1250         va_end(argsPtr);
1251
1252         this->WriteCommonExcept(std::string(textbuffer));
1253 }
1254
1255 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1256 {
1257         char tb1[MAXBUF];
1258         char tb2[MAXBUF];
1259
1260         if (this->registered != REG_ALL)
1261                 return;
1262
1263         uniq_id++;
1264         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1265         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1266         std::string out1 = tb1;
1267         std::string out2 = tb2;
1268
1269         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1270         {
1271                 CUList *ulist = v->first->GetUsers();
1272                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1273                 {
1274                         if (this != i->first)
1275                         {
1276                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1277                                 {
1278                                         already_sent[i->first->fd] = uniq_id;
1279                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1280                                 }
1281                         }
1282                 }
1283         }
1284 }
1285
1286 void User::WriteCommonExcept(const std::string &text)
1287 {
1288         char tb1[MAXBUF];
1289         std::string out1;
1290
1291         if (this->registered != REG_ALL)
1292                 return;
1293
1294         uniq_id++;
1295         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1296         out1 = tb1;
1297
1298         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1299         {
1300                 CUList *ulist = v->first->GetUsers();
1301                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1302                 {
1303                         if (this != i->first)
1304                         {
1305                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1306                                 {
1307                                         already_sent[i->first->fd] = uniq_id;
1308                                         i->first->Write(out1);
1309                                 }
1310                         }
1311                 }
1312         }
1313
1314 }
1315
1316 void User::WriteWallOps(const std::string &text)
1317 {
1318         if (!IS_OPER(this) && IS_LOCAL(this))
1319                 return;
1320
1321         std::string wallop("WALLOPS :");
1322         wallop.append(text);
1323
1324         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1325         {
1326                 User* t = *i;
1327                 if (t->IsModeSet('w'))
1328                         this->WriteTo(t,wallop);
1329         }
1330 }
1331
1332 void User::WriteWallOps(const char* text, ...)
1333 {
1334         char textbuffer[MAXBUF];
1335         va_list argsPtr;
1336
1337         va_start(argsPtr, text);
1338         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1339         va_end(argsPtr);
1340
1341         this->WriteWallOps(std::string(textbuffer));
1342 }
1343
1344 /* return 0 or 1 depending if users u and u2 share one or more common channels
1345  * (used by QUIT, NICK etc which arent channel specific notices)
1346  *
1347  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1348  * the first users channels then the second users channels within the outer loop,
1349  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1350  * all possible iterations). However this new function instead checks against the
1351  * channel's userlist in the inner loop which is a std::map<User*,User*>
1352  * and saves us time as we already know what pointer value we are after.
1353  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1354  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1355  */
1356 bool User::SharesChannelWith(User *other)
1357 {
1358         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1359                 return false;
1360
1361         /* Outer loop */
1362         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1363         {
1364                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1365                  * by replacing it with a map::find which *should* be more efficient
1366                  */
1367                 if (i->first->HasUser(other))
1368                         return true;
1369         }
1370         return false;
1371 }
1372
1373 bool User::ChangeName(const char* gecos)
1374 {
1375         if (!strcmp(gecos, this->fullname))
1376                 return true;
1377
1378         if (IS_LOCAL(this))
1379         {
1380                 int MOD_RESULT = 0;
1381                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1382                 if (MOD_RESULT)
1383                         return false;
1384                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1385         }
1386         strlcpy(this->fullname,gecos,MAXGECOS+1);
1387
1388         return true;
1389 }
1390
1391 bool User::ChangeDisplayedHost(const char* shost)
1392 {
1393         if (!strcmp(shost, this->dhost))
1394                 return true;
1395
1396         if (IS_LOCAL(this))
1397         {
1398                 int MOD_RESULT = 0;
1399                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1400                 if (MOD_RESULT)
1401                         return false;
1402                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1403         }
1404
1405         if (this->ServerInstance->Config->CycleHosts)
1406                 this->WriteCommonExcept("QUIT :Changing hosts");
1407
1408         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1409         strlcpy(this->dhost,shost,64);
1410
1411         this->InvalidateCache();
1412
1413         if (this->ServerInstance->Config->CycleHosts)
1414         {
1415                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1416                 {
1417                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1418                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1419                         if (n.length() > 0)
1420                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1421                 }
1422         }
1423
1424         if (IS_LOCAL(this))
1425                 this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost);
1426
1427         return true;
1428 }
1429
1430 bool User::ChangeIdent(const char* newident)
1431 {
1432         if (!strcmp(newident, this->ident))
1433                 return true;
1434
1435         if (this->ServerInstance->Config->CycleHosts)
1436                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1437
1438         strlcpy(this->ident, newident, IDENTMAX+1);
1439
1440         this->InvalidateCache();
1441
1442         if (this->ServerInstance->Config->CycleHosts)
1443         {
1444                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1445                 {
1446                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1447                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1448                         if (n.length() > 0)
1449                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1450                 }
1451         }
1452
1453         return true;
1454 }
1455
1456 void User::SendAll(const char* command, const char* text, ...)
1457 {
1458         char textbuffer[MAXBUF];
1459         char formatbuffer[MAXBUF];
1460         va_list argsPtr;
1461
1462         va_start(argsPtr, text);
1463         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1464         va_end(argsPtr);
1465
1466         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1467         std::string fmt = formatbuffer;
1468
1469         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1470         {
1471                 (*i)->Write(fmt);
1472         }
1473 }
1474
1475
1476 std::string User::ChannelList(User* source)
1477 {
1478         std::string list;
1479
1480         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1481         {
1482                 /* If the target is the same as the sender, let them see all their channels.
1483                  * If the channel is NOT private/secret OR the user shares a common channel
1484                  * If the user is an oper, and the <options:operspywhois> option is set.
1485                  */
1486                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1487                 {
1488                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1489                 }
1490         }
1491
1492         return list;
1493 }
1494
1495 void User::SplitChanList(User* dest, const std::string &cl)
1496 {
1497         std::string line;
1498         std::ostringstream prefix;
1499         std::string::size_type start, pos, length;
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 unsigned int User::GetMaxChans()
1533 {
1534         return this->MaxChans;
1535 }
1536
1537
1538 /*
1539  * Sets a user's connection class.
1540  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1541  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1542  * then their ip will be taken as 'priority' anyway, so for example,
1543  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1544  */
1545 ConnectClass* User::SetClass(const std::string &explicit_name)
1546 {
1547         ConnectClass *found = NULL;
1548
1549         if (!IS_LOCAL(this))
1550                 return NULL;
1551
1552         if (!explicit_name.empty())
1553         {
1554                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1555                 {
1556                         ConnectClass* c = *i;
1557
1558                         if (explicit_name == c->GetName() && !c->GetDisabled())
1559                         {
1560                                 found = c;
1561                         }
1562                 }
1563         }
1564         else
1565         {
1566                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1567                 {
1568                         ConnectClass* c = *i;
1569
1570                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1571                         {
1572                                 if (c->GetPort())
1573                                 {
1574                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1575                                         {
1576                                                 found = c;
1577                                         }
1578                                         else
1579                                                 continue;
1580                                 }
1581                                 else
1582                                 {
1583                                         if (!c->GetDisabled())
1584                                                 found = c;
1585                                 }
1586                         }
1587                 }
1588         }
1589
1590         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1591         if (found)
1592         {
1593                 /* deny change if change will take class over the limit */
1594                 if (found->limit && (found->RefCount + 1 >= found->limit))
1595                 {
1596                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%u) hit, denying", found->limit);
1597                         return this->MyClass;
1598                 }
1599
1600                 /* should always be valid, but just in case .. */
1601                 if (this->MyClass)
1602                 {
1603                         if (found == this->MyClass) // no point changing this shit :P
1604                                 return this->MyClass;
1605                         this->MyClass->RefCount--;
1606                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %u", this->MyClass->RefCount);
1607                 }
1608
1609                 this->MyClass = found;
1610                 this->MyClass->RefCount++;
1611                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %u", this->MyClass->RefCount);
1612         }
1613
1614         return this->MyClass;
1615 }
1616
1617 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1618  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1619  * then their ip will be taken as 'priority' anyway, so for example,
1620  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1621  */
1622 ConnectClass* User::GetClass()
1623 {
1624         return this->MyClass;
1625 }
1626
1627 void User::PurgeEmptyChannels()
1628 {
1629         std::vector<Channel*> to_delete;
1630
1631         // firstly decrement the count on each channel
1632         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1633         {
1634                 f->first->RemoveAllPrefixes(this);
1635                 if (f->first->DelUser(this) == 0)
1636                 {
1637                         /* No users left in here, mark it for deletion */
1638                         try
1639                         {
1640                                 to_delete.push_back(f->first);
1641                         }
1642                         catch (...)
1643                         {
1644                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1645                         }
1646                 }
1647         }
1648
1649         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1650         {
1651                 Channel* thischan = *n;
1652                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1653                 if (i2 != ServerInstance->chanlist->end())
1654                 {
1655                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1656                         delete i2->second;
1657                         ServerInstance->chanlist->erase(i2);
1658                         this->chans.erase(*n);
1659                 }
1660         }
1661
1662         this->UnOper();
1663 }
1664
1665 void User::ShowMOTD()
1666 {
1667         if (!ServerInstance->Config->MOTD.size())
1668         {
1669                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1670                 return;
1671         }
1672         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1673
1674         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1675                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
1676
1677         this->WriteServ("376 %s :End of message of the day.", this->nick);
1678 }
1679
1680 void User::ShowRULES()
1681 {
1682         if (!ServerInstance->Config->RULES.size())
1683         {
1684                 this->WriteServ("434 %s :RULES File is missing",this->nick);
1685                 return;
1686         }
1687
1688         this->WriteServ("308 %s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1689
1690         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1691                 this->WriteServ("232 %s :- %s",this->nick,i->c_str());
1692
1693         this->WriteServ("309 %s :End of RULES command.",this->nick);
1694 }
1695
1696 void User::HandleEvent(EventType et, int errornum)
1697 {
1698         if (this->quitting) // drop everything, user is due to be quit
1699                 return;
1700
1701         /* WARNING: May delete this user! */
1702         int thisfd = this->GetFd();
1703
1704         try
1705         {
1706                 switch (et)
1707                 {
1708                         case EVENT_READ:
1709                                 ServerInstance->ProcessUser(this);
1710                         break;
1711                         case EVENT_WRITE:
1712                                 this->FlushWriteBuf();
1713                         break;
1714                         case EVENT_ERROR:
1715                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1716                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1717                         break;
1718                 }
1719         }
1720         catch (...)
1721         {
1722                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1723         }
1724
1725         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1726         if ((ServerInstance->SE->GetRef(thisfd) == this))
1727         {
1728                 if (!WriteError.empty())
1729                 {
1730                         User::QuitUser(ServerInstance, this, GetWriteError());
1731                 }
1732         }
1733 }
1734
1735 void User::SetOperQuit(const std::string &oquit)
1736 {
1737         operquitmsg = oquit;
1738 }
1739
1740 const char* User::GetOperQuit()
1741 {
1742         return operquitmsg.c_str();
1743 }
1744
1745 void User::IncreasePenalty(int increase)
1746 {
1747         this->Penalty += increase;
1748 }
1749
1750 void User::DecreasePenalty(int decrease)
1751 {
1752         this->Penalty -= decrease;
1753 }
1754
1755 VisData::VisData()
1756 {
1757 }
1758
1759 VisData::~VisData()
1760 {
1761 }
1762
1763 bool VisData::VisibleTo(User* user)
1764 {
1765         return true;
1766 }
1767