src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core: libIRCDusers */
  15
  16 #include "inspircd.h"
  17 #include <stdarg.h>
  18 #include "socketengine.h"
  19 #include "wildcard.h"
  20 #include "xline.h"
  21 #include "bancache.h"
  22 #include "commands/cmd_whowas.h"
  23
  24 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  25
  26 /* XXX: Used for speeding up WriteCommon operations */
  27 unsigned long uniq_id = 0;
  28
  29 std::string User::ProcessNoticeMasks(const char *sm)
  30 {
  31         bool adding = true, oldadding = false;
  32         const char *c = sm;
  33         std::string output;
  34
  35         while (c && *c)
  36         {
  37                 switch (*c)
  38                 {
  39                         case '+':
  40                                 adding = true;
  41                         break;
  42                         case '-':
  43                                 adding = false;
  44                         break;
  45                         case '*':
  46                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  47                                 {
  48                                         if (ServerInstance->SNO->IsEnabled(d))
  49                                         {
  50                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  51                                                 {
  52                                                         if ((oldadding != adding) || (!output.length()))
  53                                                                 output += (adding ? '+' : '-');
  54
  55                                                         this->SetNoticeMask(d, adding);
  56
  57                                                         output += d;
  58                                                 }
  59                                         }
  60                                         oldadding = adding;
  61                                 }
  62                         break;
  63                         default:
  64                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  65                                 {
  66                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  67                                         {
  68                                                 if ((oldadding != adding) || (!output.length()))
  69                                                         output += (adding ? '+' : '-');
  70
  71                                                 this->SetNoticeMask(*c, adding);
  72
  73                                                 output += *c;
  74                                         }
  75                                 }
  76                                 oldadding = adding;
  77                         break;
  78                 }
  79
  80                 *c++;
  81         }
  82
  83         return output;
  84 }
  85
  86 void User::StartDNSLookup()
  87 {
  88         try
  89         {
  90                 bool cached;
  91                 const char* ip = this->GetIPString();
  92
  93                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
  94                 if (!strncmp(ip, "0::ffff:", 8))
  95                         res_reverse = new UserResolver(this->ServerInstance, this, ip + 8, DNS_QUERY_PTR4, cached);
  96                 else
  97                         res_reverse = new UserResolver(this->ServerInstance, this, ip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
  98
  99                 this->ServerInstance->AddResolver(res_reverse, cached);
 100         }
 101         catch (CoreException& e)
 102         {
 103                 ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
 104         }
 105 }
 106
 107 bool User::IsNoticeMaskSet(unsigned char sm)
 108 {
 109         return (snomasks[sm-65]);
 110 }
 111
 112 void User::SetNoticeMask(unsigned char sm, bool value)
 113 {
 114         snomasks[sm-65] = value;
 115 }
 116
 117 const char* User::FormatNoticeMasks()
 118 {
 119         static char data[MAXBUF];
 120         int offset = 0;
 121
 122         for (int n = 0; n < 64; n++)
 123         {
 124                 if (snomasks[n])
 125                         data[offset++] = n+65;
 126         }
 127
 128         data[offset] = 0;
 129         return data;
 130 }
 131
 132
 133
 134 bool User::IsModeSet(unsigned char m)
 135 {
 136         return (modes[m-65]);
 137 }
 138
 139 void User::SetMode(unsigned char m, bool value)
 140 {
 141         modes[m-65] = value;
 142 }
 143
 144 const char* User::FormatModes()
 145 {
 146         static char data[MAXBUF];
 147         int offset = 0;
 148         for (int n = 0; n < 64; n++)
 149         {
 150                 if (modes[n])
 151                         data[offset++] = n+65;
 152         }
 153         data[offset] = 0;
 154         return data;
 155 }
 156
 157 void User::DecrementModes()
 158 {
 159         ServerInstance->Log(DEBUG,"DecrementModes()");
 160         for (unsigned char n = 'A'; n <= 'z'; n++)
 161         {
 162                 if (modes[n-65])
 163                 {
 164                         ServerInstance->Log(DEBUG,"DecrementModes() found mode %c", n);
 165                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 166                         if (mh)
 167                         {
 168                                 ServerInstance->Log(DEBUG,"Found handler %c and call ChangeCount", n);
 169                                 mh->ChangeCount(-1);
 170                         }
 171                 }
 172         }
 173 }
 174
 175 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 176 {
 177         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 178         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 179         reset_due = ServerInstance->Time();
 180         age = ServerInstance->Time(true);
 181         Penalty = 0;
 182         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 183         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 184         OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 185         fd = -1;
 186         recvq.clear();
 187         sendq.clear();
 188         WriteError.clear();
 189         res_forward = res_reverse = NULL;
 190         Visibility = NULL;
 191         ip = NULL;
 192         MyClass = NULL;
 193         AllowedOperCommands = NULL;
 194         chans.clear();
 195         invites.clear();
 196         memset(modes,0,sizeof(modes));
 197         memset(snomasks,0,sizeof(snomasks));
 198         /* Invalidate cache */
 199         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 200
 201         if (uid.empty())
 202                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 203         else
 204                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 205
 206         ServerInstance->Log(DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 207
 208         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 209         if (finduuid == Instance->Users->uuidlist->end())
 210                 (*Instance->Users->uuidlist)[uuid] = this;
 211         else
 212                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 213 }
 214
 215 User::~User()
 216 {
 217         /* NULL for remote users :) */
 218         if (this->MyClass)
 219         {
 220                 this->MyClass->RefCount--;
 221                 ServerInstance->Log(DEBUG, "User destructor -- connect refcount now: %u", this->MyClass->RefCount);
 222         }
 223         if (this->AllowedOperCommands)
 224         {
 225                 delete AllowedOperCommands;
 226                 AllowedOperCommands = NULL;
 227         }
 228
 229         this->InvalidateCache();
 230         this->DecrementModes();
 231
 232         if (ip)
 233         {
 234                 ServerInstance->Users->RemoveCloneCounts(this);
 235
 236                 if (this->GetProtocolFamily() == AF_INET)
 237                 {
 238                         delete (sockaddr_in*)ip;
 239                 }
 240 #ifdef SUPPORT_IP6LINKS
 241                 else
 242                 {
 243                         delete (sockaddr_in6*)ip;
 244                 }
 245 #endif
 246         }
 247
 248         ServerInstance->Users->uuidlist->erase(uuid);
 249 }
 250
 251 char* User::MakeHost()
 252 {
 253         if (this->cached_makehost)
 254                 return this->cached_makehost;
 255
 256         char nhost[MAXBUF];
 257         /* This is much faster than snprintf */
 258         char* t = nhost;
 259         for(char* n = ident; *n; n++)
 260                 *t++ = *n;
 261         *t++ = '@';
 262         for(char* n = host; *n; n++)
 263                 *t++ = *n;
 264         *t = 0;
 265
 266         this->cached_makehost = strdup(nhost);
 267
 268         return this->cached_makehost;
 269 }
 270
 271 char* User::MakeHostIP()
 272 {
 273         if (this->cached_hostip)
 274                 return this->cached_hostip;
 275
 276         char ihost[MAXBUF];
 277         /* This is much faster than snprintf */
 278         char* t = ihost;
 279         for(char* n = ident; *n; n++)
 280                 *t++ = *n;
 281         *t++ = '@';
 282         for(const char* n = this->GetIPString(); *n; n++)
 283                 *t++ = *n;
 284         *t = 0;
 285
 286         this->cached_hostip = strdup(ihost);
 287
 288         return this->cached_hostip;
 289 }
 290
 291 void User::CloseSocket()
 292 {
 293         ServerInstance->SE->Shutdown(this, 2);
 294         ServerInstance->SE->Close(this);
 295 }
 296
 297 char* User::GetFullHost()
 298 {
 299         if (this->cached_fullhost)
 300                 return this->cached_fullhost;
 301
 302         char result[MAXBUF];
 303         char* t = result;
 304         for(char* n = nick; *n; n++)
 305                 *t++ = *n;
 306         *t++ = '!';
 307         for(char* n = ident; *n; n++)
 308                 *t++ = *n;
 309         *t++ = '@';
 310         for(char* n = dhost; *n; n++)
 311                 *t++ = *n;
 312         *t = 0;
 313
 314         this->cached_fullhost = strdup(result);
 315
 316         return this->cached_fullhost;
 317 }
 318
 319 char* User::MakeWildHost()
 320 {
 321         static char nresult[MAXBUF];
 322         char* t = nresult;
 323         *t++ = '*';     *t++ = '!';
 324         *t++ = '*';     *t++ = '@';
 325         for(char* n = dhost; *n; n++)
 326                 *t++ = *n;
 327         *t = 0;
 328         return nresult;
 329 }
 330
 331 int User::ReadData(void* buffer, size_t size)
 332 {
 333         if (IS_LOCAL(this))
 334         {
 335 #ifndef WIN32
 336                 return read(this->fd, buffer, size);
 337 #else
 338                 return recv(this->fd, (char*)buffer, size, 0);
 339 #endif
 340         }
 341         else
 342                 return 0;
 343 }
 344
 345
 346 char* User::GetFullRealHost()
 347 {
 348         if (this->cached_fullrealhost)
 349                 return this->cached_fullrealhost;
 350
 351         char fresult[MAXBUF];
 352         char* t = fresult;
 353         for(char* n = nick; *n; n++)
 354                 *t++ = *n;
 355         *t++ = '!';
 356         for(char* n = ident; *n; n++)
 357                 *t++ = *n;
 358         *t++ = '@';
 359         for(char* n = host; *n; n++)
 360                 *t++ = *n;
 361         *t = 0;
 362
 363         this->cached_fullrealhost = strdup(fresult);
 364
 365         return this->cached_fullrealhost;
 366 }
 367
 368 bool User::IsInvited(const irc::string &channel)
 369 {
 370         time_t now = time(NULL);
 371         InvitedList::iterator safei;
 372         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 373         {
 374                 if (channel == i->first)
 375                 {
 376                         if (i->second != 0 && now > i->second)
 377                         {
 378                                 /* Expired invite, remove it. */
 379                                 safei = i;
 380                                 --i;
 381                                 invites.erase(safei);
 382                                 continue;
 383                         }
 384                         return true;
 385                 }
 386         }
 387         return false;
 388 }
 389
 390 InvitedList* User::GetInviteList()
 391 {
 392         time_t now = time(NULL);
 393         /* Weed out expired invites here. */
 394         InvitedList::iterator safei;
 395         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 396         {
 397                 if (i->second != 0 && now > i->second)
 398                 {
 399                         /* Expired invite, remove it. */
 400                         safei = i;
 401                         --i;
 402                         invites.erase(safei);
 403                 }
 404         }
 405         return &invites;
 406 }
 407
 408 void User::InviteTo(const irc::string &channel, time_t timeout)
 409 {
 410         time_t now = time(NULL);
 411         if (timeout != 0 && now > timeout) return; /* Don't add invites that are expired from the get-go. */
 412         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 413         {
 414                 if (channel == i->first)
 415                 {
 416                         if (i->second != 0 && timeout > i->second)
 417                         {
 418                                 i->second = timeout;
 419                         }
 420                 }
 421         }
 422         invites.push_back(std::make_pair(channel, timeout));
 423 }
 424
 425 void User::RemoveInvite(const irc::string &channel)
 426 {
 427         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 428         {
 429                 if (channel == i->first)
 430                 {
 431                         invites.erase(i);
 432                         return;
 433                 }
 434         }
 435 }
 436
 437 bool User::HasPermission(const std::string &command)
 438 {
 439         /*
 440          * users on remote servers can completely bypass all permissions based checks.
 441          * This prevents desyncs when one server has different type/class tags to another.
 442          * That having been said, this does open things up to the possibility of source changes
 443          * allowing remote kills, etc - but if they have access to the src, they most likely have
 444          * access to the conf - so it's an end to a means either way.
 445          */
 446         if (!IS_LOCAL(this))
 447                 return true;
 448
 449         // are they even an oper at all?
 450         if (!IS_OPER(this))
 451         {
 452                 return false;
 453         }
 454
 455         if (!AllowedOperCommands)
 456                 return false;
 457
 458         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 459                 return true;
 460         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 461                 return true;
 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 (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 488                 {
 489                         this->SetWriteError("RecvQ exceeded");
 490                         ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->MyClass->GetRecvqMax());
 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.empty())
 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 (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 560         {
 561                 /*
 562                  * Fix by brain - Set the error text BEFORE calling, 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->SNO->WriteToSnoMask('A', "User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->MyClass->GetSendqMax());
 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->SNO->WriteToSnoMask('A', "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, const std::string &opername)
 662 {
 663         char* mycmd;
 664         char* savept;
 665         char* savept2;
 666
 667         try
 668         {
 669                 this->modes[UM_OPERATOR] = 1;
 670                 this->WriteServ("MODE %s :+o", this->nick);
 671                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 672                 ServerInstance->Log(DEFAULT,"OPER: %s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 673                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 674                 ServerInstance->Users->all_opers.push_back(this);
 675
 676                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 677                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 678                 {
 679
 680                         if (AllowedOperCommands)
 681                                 AllowedOperCommands->clear();
 682                         else
 683                                 AllowedOperCommands = new std::map<std::string, bool>;
 684
 685                         char* Classes = strdup(iter_opertype->second);
 686                         char* myclass = strtok_r(Classes," ",&savept);
 687                         while (myclass)
 688                         {
 689                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 690                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 691                                 {
 692                                         char* CommandList = strdup(iter_operclass->second);
 693                                         mycmd = strtok_r(CommandList," ",&savept2);
 694                                         while (mycmd)
 695                                         {
 696                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 697                                                 mycmd = strtok_r(NULL," ",&savept2);
 698                                         }
 699                                         free(CommandList);
 700                                 }
 701                                 myclass = strtok_r(NULL," ",&savept);
 702                         }
 703                         free(Classes);
 704                 }
 705
 706                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 707         }
 708
 709         catch (...)
 710         {
 711                 ServerInstance->Log(DEBUG,"Exception in User::Oper()");
 712         }
 713 }
 714
 715 void User::UnOper()
 716 {
 717         try
 718         {
 719                 if (IS_OPER(this))
 720                 {
 721                         // unset their oper type (what IS_OPER checks), and remove +o
 722                         *this->oper = 0;
 723                         this->modes[UM_OPERATOR] = 0;
 724
 725                         // remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404
 726                         ServerInstance->Users->all_opers.remove(this);
 727
 728                         if (AllowedOperCommands)
 729                         {
 730                                 delete AllowedOperCommands;
 731                                 AllowedOperCommands = NULL;
 732                         }
 733                 }
 734         }
 735
 736         catch (...)
 737         {
 738                 ServerInstance->Log(DEBUG,"Exception in User::UnOper()");
 739         }
 740 }
 741
 742 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 743 {
 744         Instance->Log(DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str());
 745         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str());
 746         user->quietquit = false;
 747         user->quitmsg = quitreason;
 748         user->operquitmsg = operreason;
 749         Instance->GlobalCulls.AddItem(user);
 750 }
 751
 752 /* adds or updates an entry in the whowas list */
 753 void User::AddToWhoWas()
 754 {
 755         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 756         if (whowas_command)
 757         {
 758                 std::deque<classbase*> params;
 759                 params.push_back(this);
 760                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 761         }
 762 }
 763
 764 /*
 765  * Check class restrictions
 766  */
 767 void User::CheckClass()
 768 {
 769         ConnectClass* a = this->MyClass;
 770
 771         if ((!a) || (a->GetType() == CC_DENY))
 772         {
 773                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 774                 return;
 775         }
 776         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 777         {
 778                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 779                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 780                 return;
 781         }
 782         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 783         {
 784                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 785                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 786                 return;
 787         }
 788
 789         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 790         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 791         this->MaxChans = a->GetMaxChans();
 792 }
 793
 794 void User::FullConnect()
 795 {
 796         ServerInstance->stats->statsConnects++;
 797         this->idle_lastmsg = ServerInstance->Time();
 798
 799         /*
 800          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 801          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 802          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 803          * Don't remove this! -- w00t
 804          */
 805         this->SetClass();
 806
 807         /* Check the password, if one is required by the user's connect class.
 808          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 809          */
 810         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 811         {
 812                 User::QuitUser(ServerInstance, this, "Invalid password");
 813                 return;
 814         }
 815
 816         if (!this->exempt)
 817         {
 818                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 819
 820                 if (r)
 821                 {
 822                         r->Apply(this);
 823                         return;
 824                 }
 825
 826                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 827
 828                 if (n)
 829                 {
 830                         n->Apply(this);
 831                         return;
 832                 }
 833         }
 834
 835         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 836         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 837         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 838         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 839         this->WriteServ("004 %s %s %s %s %s %s", this->nick, ServerInstance->Config->ServerName, VERSION, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 840
 841         ServerInstance->Config->Send005(this);
 842
 843         this->WriteServ("042 %s %s :your unique ID", this->nick, this->uuid);
 844
 845
 846         this->ShowMOTD();
 847
 848         /* Now registered */
 849         if (ServerInstance->Users->unregistered_count)
 850                 ServerInstance->Users->unregistered_count--;
 851
 852         /* Trigger LUSERS output, give modules a chance too */
 853         int MOD_RESULT = 0;
 854         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 855         if (!MOD_RESULT)
 856                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 857
 858         /*
 859          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 860          * for a user that doesn't exist yet.
 861          */
 862         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 863
 864         this->registered = REG_ALL;
 865
 866         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 867
 868         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString(), this->fullname);
 869
 870         ServerInstance->Log(DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 871         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 872 }
 873
 874 /** User::UpdateNick()
 875  * re-allocates a nick in the user_hash after they change nicknames,
 876  * returns a pointer to the new user as it may have moved
 877  */
 878 User* User::UpdateNickHash(const char* New)
 879 {
 880         try
 881         {
 882                 //user_hash::iterator newnick;
 883                 user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 884
 885                 if (!strcasecmp(this->nick,New))
 886                         return oldnick->second;
 887
 888                 if (oldnick == ServerInstance->Users->clientlist->end())
 889                         return NULL; /* doesnt exist */
 890
 891                 User* olduser = oldnick->second;
 892                 (*(ServerInstance->Users->clientlist))[New] = olduser;
 893                 ServerInstance->Users->clientlist->erase(oldnick);
 894                 return olduser;
 895         }
 896
 897         catch (...)
 898         {
 899                 ServerInstance->Log(DEBUG,"Exception in User::UpdateNickHash()");
 900                 return NULL;
 901         }
 902 }
 903
 904 void User::InvalidateCache()
 905 {
 906         /* Invalidate cache */
 907         if (cached_fullhost)
 908                 free(cached_fullhost);
 909         if (cached_hostip)
 910                 free(cached_hostip);
 911         if (cached_makehost)
 912                 free(cached_makehost);
 913         if (cached_fullrealhost)
 914                 free(cached_fullrealhost);
 915         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 916 }
 917
 918 bool User::ForceNickChange(const char* newnick)
 919 {
 920         try
 921         {
 922                 /*
 923                  * XXX this makes no sense..
 924                  * why do we do nothing for change on users not REG_ALL?
 925                  * why do we trigger events twice for everyone previously (and just them now)
 926                  * i think the first if () needs removing totally, or? -- w00t
 927                  */
 928                 if (this->registered != REG_ALL)
 929                 {
 930                         int MOD_RESULT = 0;
 931
 932                         this->InvalidateCache();
 933
 934                         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 935
 936                         if (MOD_RESULT)
 937                         {
 938                                 ServerInstance->stats->statsCollisions++;
 939                                 return false;
 940                         }
 941
 942                         if (ServerInstance->XLines->MatchesLine("Q",newnick))
 943                         {
 944                                 ServerInstance->stats->statsCollisions++;
 945                                 return false;
 946                         }
 947                 }
 948                 else
 949                 {
 950                         std::deque<classbase*> dummy;
 951                         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 952                         if (nickhandler)
 953                         {
 954                                 nickhandler->HandleInternal(1, dummy);
 955                                 bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
 956                                 nickhandler->HandleInternal(0, dummy);
 957                                 return result;
 958                         }
 959                 }
 960                 return false;
 961         }
 962
 963         catch (...)
 964         {
 965                 ServerInstance->Log(DEBUG,"Exception in User::ForceNickChange()");
 966                 return false;
 967         }
 968 }
 969
 970 void User::SetSockAddr(int protocol_family, const char* ip, int port)
 971 {
 972         this->cachedip = "";
 973
 974         switch (protocol_family)
 975         {
 976 #ifdef SUPPORT_IP6LINKS
 977                 case AF_INET6:
 978                 {
 979                         sockaddr_in6* sin = new sockaddr_in6;
 980                         sin->sin6_family = AF_INET6;
 981                         sin->sin6_port = port;
 982                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
 983                         this->ip = (sockaddr*)sin;
 984                 }
 985                 break;
 986 #endif
 987                 case AF_INET:
 988                 {
 989                         sockaddr_in* sin = new sockaddr_in;
 990                         sin->sin_family = AF_INET;
 991                         sin->sin_port = port;
 992                         inet_pton(AF_INET, ip, &sin->sin_addr);
 993                         this->ip = (sockaddr*)sin;
 994                 }
 995                 break;
 996                 default:
 997                         ServerInstance->Log(DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
 998                 break;
 999         }
1000 }
1001
1002 int User::GetPort()
1003 {
1004         if (this->ip == NULL)
1005                 return 0;
1006
1007         switch (this->GetProtocolFamily())
1008         {
1009 #ifdef SUPPORT_IP6LINKS
1010                 case AF_INET6:
1011                 {
1012                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1013                         return sin->sin6_port;
1014                 }
1015                 break;
1016 #endif
1017                 case AF_INET:
1018                 {
1019                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1020                         return sin->sin_port;
1021                 }
1022                 break;
1023                 default:
1024                 break;
1025         }
1026         return 0;
1027 }
1028
1029 int User::GetProtocolFamily()
1030 {
1031         if (this->ip == NULL)
1032                 return 0;
1033
1034         sockaddr_in* sin = (sockaddr_in*)this->ip;
1035         return sin->sin_family;
1036 }
1037
1038 /*
1039  * XXX the duplication here is horrid..
1040  * do we really need two methods doing essentially the same thing?
1041  */
1042 const char* User::GetIPString()
1043 {
1044         static char buf[1024];
1045
1046         if (this->ip == NULL)
1047                 return "";
1048
1049         if (!this->cachedip.empty())
1050                 return this->cachedip.c_str();
1051
1052         switch (this->GetProtocolFamily())
1053         {
1054 #ifdef SUPPORT_IP6LINKS
1055                 case AF_INET6:
1056                 {
1057                         static char temp[1024];
1058
1059                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1060                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1061                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1062                         if (*buf == ':')
1063                         {
1064                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1065                                 *temp = '0';
1066                                 this->cachedip = temp;
1067                                 return temp;
1068                         }
1069
1070                         this->cachedip = buf;
1071                         return buf;
1072                 }
1073                 break;
1074 #endif
1075                 case AF_INET:
1076                 {
1077                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1078                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1079                         this->cachedip = buf;
1080                         return buf;
1081                 }
1082                 break;
1083                 default:
1084                 break;
1085         }
1086
1087         // Unreachable, probably
1088         return "";
1089 }
1090
1091 /** NOTE: We cannot pass a const reference to this method.
1092  * The string is changed by the workings of the method,
1093  * so that if we pass const ref, we end up copying it to
1094  * something we can change anyway. Makes sense to just let
1095  * the compiler do that copy for us.
1096  */
1097 void User::Write(std::string text)
1098 {
1099         if (!ServerInstance->SE->BoundsCheckFd(this))
1100                 return;
1101
1102         try
1103         {
1104                 /* ServerInstance->Log(DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1105                  * WARNING: The above debug line is VERY loud, do NOT
1106                  * enable it till we have a good way of filtering it
1107                  * out of the logs (e.g. 1.2 would be good).
1108                  */
1109                 text.append("\r\n");
1110         }
1111         catch (...)
1112         {
1113                 ServerInstance->Log(DEBUG,"Exception in User::Write() std::string::append");
1114                 return;
1115         }
1116
1117         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1118         {
1119                 try
1120                 {
1121                         /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1122                          * implement their own buffering mechanisms
1123                          */
1124                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1125                 }
1126                 catch (CoreException& modexcept)
1127                 {
1128                         ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1129                 }
1130         }
1131         else
1132         {
1133                 this->AddWriteBuf(text);
1134         }
1135         ServerInstance->stats->statsSent += text.length();
1136         this->ServerInstance->SE->WantWrite(this);
1137 }
1138
1139 /** Write()
1140  */
1141 void User::Write(const char *text, ...)
1142 {
1143         va_list argsPtr;
1144         char textbuffer[MAXBUF];
1145
1146         va_start(argsPtr, text);
1147         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1148         va_end(argsPtr);
1149
1150         this->Write(std::string(textbuffer));
1151 }
1152
1153 void User::WriteServ(const std::string& text)
1154 {
1155         char textbuffer[MAXBUF];
1156
1157         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1158         this->Write(std::string(textbuffer));
1159 }
1160
1161 /** WriteServ()
1162  *  Same as Write(), except `text' is prefixed with `:server.name '.
1163  */
1164 void User::WriteServ(const char* text, ...)
1165 {
1166         va_list argsPtr;
1167         char textbuffer[MAXBUF];
1168
1169         va_start(argsPtr, text);
1170         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1171         va_end(argsPtr);
1172
1173         this->WriteServ(std::string(textbuffer));
1174 }
1175
1176
1177 void User::WriteFrom(User *user, const std::string &text)
1178 {
1179         char tb[MAXBUF];
1180
1181         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1182
1183         this->Write(std::string(tb));
1184 }
1185
1186
1187 /* write text from an originating user to originating user */
1188
1189 void User::WriteFrom(User *user, const char* text, ...)
1190 {
1191         va_list argsPtr;
1192         char textbuffer[MAXBUF];
1193
1194         va_start(argsPtr, text);
1195         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1196         va_end(argsPtr);
1197
1198         this->WriteFrom(user, std::string(textbuffer));
1199 }
1200
1201
1202 /* write text to an destination user from a source user (e.g. user privmsg) */
1203
1204 void User::WriteTo(User *dest, const char *data, ...)
1205 {
1206         char textbuffer[MAXBUF];
1207         va_list argsPtr;
1208
1209         va_start(argsPtr, data);
1210         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1211         va_end(argsPtr);
1212
1213         this->WriteTo(dest, std::string(textbuffer));
1214 }
1215
1216 void User::WriteTo(User *dest, const std::string &data)
1217 {
1218         dest->WriteFrom(this, data);
1219 }
1220
1221
1222 void User::WriteCommon(const char* text, ...)
1223 {
1224         char textbuffer[MAXBUF];
1225         va_list argsPtr;
1226
1227         if (this->registered != REG_ALL)
1228                 return;
1229
1230         va_start(argsPtr, text);
1231         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1232         va_end(argsPtr);
1233
1234         this->WriteCommon(std::string(textbuffer));
1235 }
1236
1237 void User::WriteCommon(const std::string &text)
1238 {
1239         try
1240         {
1241                 bool sent_to_at_least_one = false;
1242                 char tb[MAXBUF];
1243
1244                 if (this->registered != REG_ALL)
1245                         return;
1246
1247                 uniq_id++;
1248
1249                 /* We dont want to be doing this n times, just once */
1250                 snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1251                 std::string out = tb;
1252
1253                 for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1254                 {
1255                         CUList* ulist = v->first->GetUsers();
1256                         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1257                         {
1258                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1259                                 {
1260                                         already_sent[i->first->fd] = uniq_id;
1261                                         i->first->Write(out);
1262                                         sent_to_at_least_one = true;
1263                                 }
1264                         }
1265                 }
1266
1267                 /*
1268                  * if the user was not in any channels, no users will receive the text. Make sure the user
1269                  * receives their OWN message for WriteCommon
1270                  */
1271                 if (!sent_to_at_least_one)
1272                 {
1273                         this->Write(std::string(tb));
1274                 }
1275         }
1276
1277         catch (...)
1278         {
1279                 ServerInstance->Log(DEBUG,"Exception in User::WriteCommon()");
1280         }
1281 }
1282
1283
1284 /* write a formatted string to all users who share at least one common
1285  * channel, NOT including the source user e.g. for use in QUIT
1286  */
1287
1288 void User::WriteCommonExcept(const char* text, ...)
1289 {
1290         char textbuffer[MAXBUF];
1291         va_list argsPtr;
1292
1293         va_start(argsPtr, text);
1294         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1295         va_end(argsPtr);
1296
1297         this->WriteCommonExcept(std::string(textbuffer));
1298 }
1299
1300 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1301 {
1302         char tb1[MAXBUF];
1303         char tb2[MAXBUF];
1304
1305         if (this->registered != REG_ALL)
1306                 return;
1307
1308         uniq_id++;
1309         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1310         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1311         std::string out1 = tb1;
1312         std::string out2 = tb2;
1313
1314         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1315         {
1316                 CUList *ulist = v->first->GetUsers();
1317                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1318                 {
1319                         if (this != i->first)
1320                         {
1321                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1322                                 {
1323                                         already_sent[i->first->fd] = uniq_id;
1324                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1325                                 }
1326                         }
1327                 }
1328         }
1329 }
1330
1331 void User::WriteCommonExcept(const std::string &text)
1332 {
1333         char tb1[MAXBUF];
1334         std::string out1;
1335
1336         if (this->registered != REG_ALL)
1337                 return;
1338
1339         uniq_id++;
1340         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1341         out1 = tb1;
1342
1343         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1344         {
1345                 CUList *ulist = v->first->GetUsers();
1346                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1347                 {
1348                         if (this != i->first)
1349                         {
1350                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1351                                 {
1352                                         already_sent[i->first->fd] = uniq_id;
1353                                         i->first->Write(out1);
1354                                 }
1355                         }
1356                 }
1357         }
1358
1359 }
1360
1361 void User::WriteWallOps(const std::string &text)
1362 {
1363         if (!IS_OPER(this) && IS_LOCAL(this))
1364                 return;
1365
1366         std::string wallop("WALLOPS :");
1367         wallop.append(text);
1368
1369         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1370         {
1371                 User* t = *i;
1372                 if (t->IsModeSet('w'))
1373                         this->WriteTo(t,wallop);
1374         }
1375 }
1376
1377 void User::WriteWallOps(const char* text, ...)
1378 {
1379         char textbuffer[MAXBUF];
1380         va_list argsPtr;
1381
1382         va_start(argsPtr, text);
1383         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1384         va_end(argsPtr);
1385
1386         this->WriteWallOps(std::string(textbuffer));
1387 }
1388
1389 /* return 0 or 1 depending if users u and u2 share one or more common channels
1390  * (used by QUIT, NICK etc which arent channel specific notices)
1391  *
1392  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1393  * the first users channels then the second users channels within the outer loop,
1394  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1395  * all possible iterations). However this new function instead checks against the
1396  * channel's userlist in the inner loop which is a std::map<User*,User*>
1397  * and saves us time as we already know what pointer value we are after.
1398  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1399  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1400  */
1401 bool User::SharesChannelWith(User *other)
1402 {
1403         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1404                 return false;
1405
1406         /* Outer loop */
1407         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1408         {
1409                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1410                  * by replacing it with a map::find which *should* be more efficient
1411                  */
1412                 if (i->first->HasUser(other))
1413                         return true;
1414         }
1415         return false;
1416 }
1417
1418 bool User::ChangeName(const char* gecos)
1419 {
1420         if (!strcmp(gecos, this->fullname))
1421                 return true;
1422
1423         if (IS_LOCAL(this))
1424         {
1425                 int MOD_RESULT = 0;
1426                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1427                 if (MOD_RESULT)
1428                         return false;
1429                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1430         }
1431         strlcpy(this->fullname,gecos,MAXGECOS+1);
1432
1433         return true;
1434 }
1435
1436 bool User::ChangeDisplayedHost(const char* host)
1437 {
1438         if (!strcmp(host, this->dhost))
1439                 return true;
1440
1441         if (IS_LOCAL(this))
1442         {
1443                 int MOD_RESULT = 0;
1444                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1445                 if (MOD_RESULT)
1446                         return false;
1447                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1448         }
1449         if (this->ServerInstance->Config->CycleHosts)
1450                 this->WriteCommonExcept("QUIT :Changing hosts");
1451
1452         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1453         strlcpy(this->dhost,host,64);
1454
1455         this->InvalidateCache();
1456
1457         if (this->ServerInstance->Config->CycleHosts)
1458         {
1459                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1460                 {
1461                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1462                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1463                         if (n.length() > 0)
1464                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1465                 }
1466         }
1467
1468         if (IS_LOCAL(this))
1469                 this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost);
1470
1471         return true;
1472 }
1473
1474 bool User::ChangeIdent(const char* newident)
1475 {
1476         if (!strcmp(newident, this->ident))
1477                 return true;
1478
1479         if (this->ServerInstance->Config->CycleHosts)
1480                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1481
1482         strlcpy(this->ident, newident, IDENTMAX+1);
1483
1484         this->InvalidateCache();
1485
1486         if (this->ServerInstance->Config->CycleHosts)
1487         {
1488                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1489                 {
1490                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1491                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1492                         if (n.length() > 0)
1493                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1494                 }
1495         }
1496
1497         return true;
1498 }
1499
1500 void User::SendAll(const char* command, char* text, ...)
1501 {
1502         char textbuffer[MAXBUF];
1503         char formatbuffer[MAXBUF];
1504         va_list argsPtr;
1505
1506         va_start(argsPtr, text);
1507         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1508         va_end(argsPtr);
1509
1510         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1511         std::string fmt = formatbuffer;
1512
1513         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1514         {
1515                 (*i)->Write(fmt);
1516         }
1517 }
1518
1519
1520 std::string User::ChannelList(User* source)
1521 {
1522         try
1523         {
1524                 std::string list;
1525                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1526                 {
1527                         /* If the target is the same as the sender, let them see all their channels.
1528                          * If the channel is NOT private/secret OR the user shares a common channel
1529                          * If the user is an oper, and the <options:operspywhois> option is set.
1530                          */
1531                         if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1532                         {
1533                                 list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1534                         }
1535                 }
1536                 return list;
1537         }
1538         catch (...)
1539         {
1540                 ServerInstance->Log(DEBUG,"Exception in User::ChannelList()");
1541                 return "";
1542         }
1543 }
1544
1545 void User::SplitChanList(User* dest, const std::string &cl)
1546 {
1547         std::string line;
1548         std::ostringstream prefix;
1549         std::string::size_type start, pos, length;
1550
1551         try
1552         {
1553                 prefix << this->nick << " " << dest->nick << " :";
1554                 line = prefix.str();
1555                 int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1556
1557                 for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1558                 {
1559                         length = (pos == std::string::npos) ? cl.length() : pos;
1560
1561                         if (line.length() + namelen + length - start > 510)
1562                         {
1563                                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1564                                 line = prefix.str();
1565                         }
1566
1567                         if(pos == std::string::npos)
1568                         {
1569                                 line.append(cl.substr(start, length - start));
1570                                 break;
1571                         }
1572                         else
1573                         {
1574                                 line.append(cl.substr(start, length - start + 1));
1575                         }
1576                 }
1577
1578                 if (line.length())
1579                 {
1580                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1581                 }
1582         }
1583
1584         catch (...)
1585         {
1586                 ServerInstance->Log(DEBUG,"Exception in User::SplitChanList()");
1587         }
1588 }
1589
1590 unsigned int User::GetMaxChans()
1591 {
1592         return this->MaxChans;
1593 }
1594
1595
1596 /*
1597  * Sets a user's connection class.
1598  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1599  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1600  * then their ip will be taken as 'priority' anyway, so for example,
1601  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1602  */
1603 ConnectClass* User::SetClass(const std::string &explicit_name)
1604 {
1605         ConnectClass *found = NULL;
1606
1607         if (!IS_LOCAL(this))
1608                 return NULL;
1609
1610         if (!explicit_name.empty())
1611         {
1612                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1613                 {
1614                         ConnectClass* c = *i;
1615
1616                         if (explicit_name == c->GetName() && !c->GetDisabled())
1617                         {
1618                                 found = c;
1619                         }
1620                 }
1621         }
1622         else
1623         {
1624                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1625                 {
1626                         ConnectClass* c = *i;
1627
1628                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1629                         {
1630                                 if (c->GetPort())
1631                                 {
1632                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1633                                         {
1634                                                 found = c;
1635                                         }
1636                                         else
1637                                                 continue;
1638                                 }
1639                                 else
1640                                 {
1641                                         if (!c->GetDisabled())
1642                                                 found = c;
1643                                 }
1644                         }
1645                 }
1646         }
1647
1648         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1649         if (found)
1650         {
1651                 /* deny change if change will take class over the limit */
1652                 if (found->limit && (found->RefCount + 1 >= found->limit))
1653                 {
1654                         ServerInstance->Log(DEBUG, "OOPS: Connect class limit (%u) hit, denying", found->limit);
1655                         return this->MyClass;
1656                 }
1657
1658                 /* should always be valid, but just in case .. */
1659                 if (this->MyClass)
1660                 {
1661                         if (found == this->MyClass) // no point changing this shit :P
1662                                 return this->MyClass;
1663                         this->MyClass->RefCount--;
1664                         ServerInstance->Log(DEBUG, "Untying user from connect class -- refcount: %u", this->MyClass->RefCount);
1665                 }
1666
1667                 this->MyClass = found;
1668                 this->MyClass->RefCount++;
1669                 ServerInstance->Log(DEBUG, "User tied to new class -- connect refcount now: %u", this->MyClass->RefCount);
1670         }
1671
1672         return this->MyClass;
1673 }
1674
1675 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1676  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1677  * then their ip will be taken as 'priority' anyway, so for example,
1678  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1679  */
1680 ConnectClass* User::GetClass()
1681 {
1682         return this->MyClass;
1683 }
1684
1685 void User::PurgeEmptyChannels()
1686 {
1687         std::vector<Channel*> to_delete;
1688
1689         // firstly decrement the count on each channel
1690         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1691         {
1692                 f->first->RemoveAllPrefixes(this);
1693                 if (f->first->DelUser(this) == 0)
1694                 {
1695                         /* No users left in here, mark it for deletion */
1696                         try
1697                         {
1698                                 to_delete.push_back(f->first);
1699                         }
1700                         catch (...)
1701                         {
1702                                 ServerInstance->Log(DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1703                         }
1704                 }
1705         }
1706
1707         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1708         {
1709                 Channel* thischan = *n;
1710                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1711                 if (i2 != ServerInstance->chanlist->end())
1712                 {
1713                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1714                         delete i2->second;
1715                         ServerInstance->chanlist->erase(i2);
1716                         this->chans.erase(*n);
1717                 }
1718         }
1719
1720         this->UnOper();
1721 }
1722
1723 void User::ShowMOTD()
1724 {
1725         if (!ServerInstance->Config->MOTD.size())
1726         {
1727                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1728                 return;
1729         }
1730         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1731
1732         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1733                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
1734
1735         this->WriteServ("376 %s :End of message of the day.", this->nick);
1736 }
1737
1738 void User::ShowRULES()
1739 {
1740         if (!ServerInstance->Config->RULES.size())
1741         {
1742                 this->WriteServ("434 %s :RULES File is missing",this->nick);
1743                 return;
1744         }
1745
1746         this->WriteServ("308 %s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1747
1748         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1749                 this->WriteServ("232 %s :- %s",this->nick,i->c_str());
1750
1751         this->WriteServ("309 %s :End of RULES command.",this->nick);
1752 }
1753
1754 void User::HandleEvent(EventType et, int errornum)
1755 {
1756         if (this->quitting) // drop everything, user is due to be quit
1757                 return;
1758
1759         /* WARNING: May delete this user! */
1760         int thisfd = this->GetFd();
1761
1762         try
1763         {
1764                 switch (et)
1765                 {
1766                         case EVENT_READ:
1767                                 ServerInstance->ProcessUser(this);
1768                         break;
1769                         case EVENT_WRITE:
1770                                 this->FlushWriteBuf();
1771                         break;
1772                         case EVENT_ERROR:
1773                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1774                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1775                         break;
1776                 }
1777         }
1778         catch (...)
1779         {
1780                 ServerInstance->Log(DEBUG,"Exception in User::HandleEvent intercepted");
1781         }
1782
1783         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1784         if ((ServerInstance->SE->GetRef(thisfd) == this))
1785         {
1786                 if (!WriteError.empty())
1787                 {
1788                         User::QuitUser(ServerInstance, this, GetWriteError());
1789                 }
1790         }
1791 }
1792
1793 void User::SetOperQuit(const std::string &oquit)
1794 {
1795         operquitmsg = oquit;
1796 }
1797
1798 const char* User::GetOperQuit()
1799 {
1800         return operquitmsg.c_str();
1801 }
1802
1803 void User::IncreasePenalty(int increase)
1804 {
1805         this->Penalty += increase;
1806 }
1807
1808 void User::DecreasePenalty(int decrease)
1809 {
1810         this->Penalty -= decrease;
1811 }
1812
1813 VisData::VisData()
1814 {
1815 }
1816
1817 VisData::~VisData()
1818 {
1819 }
1820
1821 bool VisData::VisibleTo(User* user)
1822 {
1823         return true;
1824 }
1825