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 */
  15
  16 #include "inspircd.h"
  17 #include <stdarg.h>
  18 #include "socketengine.h"
  19 #include "xline.h"
  20 #include "bancache.h"
  21 #include "commands/cmd_whowas.h"
  22
  23 /* XXX: Used for speeding up WriteCommon operations */
  24 unsigned long uniq_id = 1;
  25
  26 static unsigned long* already_sent = NULL;
  27
  28
  29 void InitializeAlreadySent(SocketEngine* SE)
  30 {
  31         already_sent = new unsigned long[SE->GetMaxFds()];
  32         memset(already_sent, 0, SE->GetMaxFds() * sizeof(unsigned long));
  33 }
  34
  35
  36 std::string User::ProcessNoticeMasks(const char *sm)
  37 {
  38         bool adding = true, oldadding = false;
  39         const char *c = sm;
  40         std::string output;
  41
  42         while (c && *c)
  43         {
  44                 switch (*c)
  45                 {
  46                         case '+':
  47                                 adding = true;
  48                         break;
  49                         case '-':
  50                                 adding = false;
  51                         break;
  52                         case '*':
  53                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  54                                 {
  55                                         if (ServerInstance->SNO->IsEnabled(d))
  56                                         {
  57                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  58                                                 {
  59                                                         if ((oldadding != adding) || (!output.length()))
  60                                                                 output += (adding ? '+' : '-');
  61
  62                                                         this->SetNoticeMask(d, adding);
  63
  64                                                         output += d;
  65                                                 }
  66                                         }
  67                                         oldadding = adding;
  68                                 }
  69                         break;
  70                         default:
  71                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  72                                 {
  73                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  74                                         {
  75                                                 if ((oldadding != adding) || (!output.length()))
  76                                                         output += (adding ? '+' : '-');
  77
  78                                                 this->SetNoticeMask(*c, adding);
  79
  80                                                 output += *c;
  81                                         }
  82                                 }
  83                                 else
  84                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  85
  86                                 oldadding = adding;
  87                         break;
  88                 }
  89
  90                 *c++;
  91         }
  92
  93         std::string s = this->FormatNoticeMasks();
  94         if (s.length() == 0)
  95         {
  96                 this->modes[UM_SNOMASK] = false;
  97         }
  98
  99         return output;
 100 }
 101
 102 void User::StartDNSLookup()
 103 {
 104         try
 105         {
 106                 bool cached = false;
 107                 const char* sip = this->GetIPString();
 108                 UserResolver *res_reverse;
 109
 110                 QueryType resolvtype = strchr(sip, ':') ? DNS_QUERY_PTR6 : DNS_QUERY_PTR4;
 111                 // when GetProtocolFamily() works correctly with 4in6, this can be replaced by
 112                 // this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6;
 113                 res_reverse = new UserResolver(this->ServerInstance, this, sip, resolvtype, cached);
 114
 115                 this->ServerInstance->AddResolver(res_reverse, cached);
 116         }
 117         catch (CoreException& e)
 118         {
 119                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 120         }
 121 }
 122
 123 bool User::IsNoticeMaskSet(unsigned char sm)
 124 {
 125         if (!isalpha(sm))
 126                 return false;
 127         return (snomasks[sm-65]);
 128 }
 129
 130 void User::SetNoticeMask(unsigned char sm, bool value)
 131 {
 132         if (!isalpha(sm))
 133                 return;
 134         snomasks[sm-65] = value;
 135 }
 136
 137 const char* User::FormatNoticeMasks()
 138 {
 139         static char data[MAXBUF];
 140         int offset = 0;
 141
 142         for (int n = 0; n < 64; n++)
 143         {
 144                 if (snomasks[n])
 145                         data[offset++] = n+65;
 146         }
 147
 148         data[offset] = 0;
 149         return data;
 150 }
 151
 152 bool User::IsModeSet(unsigned char m)
 153 {
 154         if (!isalpha(m))
 155                 return false;
 156         return (modes[m-65]);
 157 }
 158
 159 void User::SetMode(unsigned char m, bool value)
 160 {
 161         if (!isalpha(m))
 162                 return;
 163         modes[m-65] = value;
 164 }
 165
 166 const char* User::FormatModes(bool showparameters)
 167 {
 168         static char data[MAXBUF];
 169         std::string params;
 170         int offset = 0;
 171
 172         for (unsigned char n = 0; n < 64; n++)
 173         {
 174                 if (modes[n])
 175                 {
 176                         data[offset++] = n + 65;
 177                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 178                         if (showparameters && mh && mh->GetNumParams(true))
 179                         {
 180                                 std::string p = mh->GetUserParameter(this);
 181                                 if (p.length())
 182                                         params.append(" ").append(p);
 183                         }
 184                 }
 185         }
 186         data[offset] = 0;
 187         strlcat(data, params.c_str(), MAXBUF);
 188         return data;
 189 }
 190
 191 void User::DecrementModes()
 192 {
 193         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 194         for (unsigned char n = 'A'; n <= 'z'; n++)
 195         {
 196                 if (modes[n-65])
 197                 {
 198                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 199                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 200                         if (mh)
 201                         {
 202                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 203                                 mh->ChangeCount(-1);
 204                         }
 205                 }
 206         }
 207 }
 208
 209 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 210 {
 211         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 212         age = ServerInstance->Time();
 213         Penalty = 0;
 214         lastping = signon = idle_lastmsg = nping = registered = 0;
 215         bytes_in = bytes_out = cmds_in = cmds_out = 0;
 216         quietquit = quitting = exempt = haspassed = dns_done = false;
 217         fd = -1;
 218         recvq.clear();
 219         sendq.clear();
 220         Visibility = NULL;
 221         ip = NULL;
 222         MyClass = NULL;
 223         AllowedPrivs = AllowedOperCommands = NULL;
 224         chans.clear();
 225         invites.clear();
 226
 227         if (uid.empty())
 228                 uuid.assign(Instance->GetUID(), 0, UUID_LENGTH - 1);
 229         else
 230                 uuid.assign(uid, 0, UUID_LENGTH - 1);
 231
 232         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid.c_str(), uid.empty() ? "allocated new" : "used remote");
 233
 234         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 235         if (finduuid == Instance->Users->uuidlist->end())
 236                 (*Instance->Users->uuidlist)[uuid] = this;
 237         else
 238                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 239 }
 240
 241 User::~User()
 242 {
 243         /* NULL for remote users :) */
 244         if (this->MyClass)
 245         {
 246                 this->MyClass->RefCount--;
 247                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %lu", this->MyClass->RefCount);
 248         }
 249
 250         if (this->AllowedOperCommands)
 251         {
 252                 delete AllowedOperCommands;
 253                 AllowedOperCommands = NULL;
 254         }
 255
 256         if (this->AllowedPrivs)
 257         {
 258                 delete AllowedPrivs;
 259                 AllowedPrivs = NULL;
 260         }
 261
 262         this->InvalidateCache();
 263         this->DecrementModes();
 264
 265         if (ip)
 266         {
 267                 ServerInstance->Users->RemoveCloneCounts(this);
 268
 269                 if (this->GetProtocolFamily() == AF_INET)
 270                 {
 271                         delete (sockaddr_in*)ip;
 272                 }
 273 #ifdef SUPPORT_IP6LINKS
 274                 else
 275                 {
 276                         delete (sockaddr_in6*)ip;
 277                 }
 278 #endif
 279         }
 280
 281         ServerInstance->Users->uuidlist->erase(uuid);
 282 }
 283
 284 const std::string& User::MakeHost()
 285 {
 286         if (!this->cached_makehost.empty())
 287                 return this->cached_makehost;
 288
 289         char nhost[MAXBUF];
 290         /* This is much faster than snprintf */
 291         char* t = nhost;
 292         for(const char* n = ident.c_str(); *n; n++)
 293                 *t++ = *n;
 294         *t++ = '@';
 295         for(const char* n = host.c_str(); *n; n++)
 296                 *t++ = *n;
 297         *t = 0;
 298
 299         this->cached_makehost.assign(nhost);
 300
 301         return this->cached_makehost;
 302 }
 303
 304 const std::string& User::MakeHostIP()
 305 {
 306         if (!this->cached_hostip.empty())
 307                 return this->cached_hostip;
 308
 309         char ihost[MAXBUF];
 310         /* This is much faster than snprintf */
 311         char* t = ihost;
 312         for(const char* n = ident.c_str(); *n; n++)
 313                 *t++ = *n;
 314         *t++ = '@';
 315         for(const char* n = this->GetIPString(); *n; n++)
 316                 *t++ = *n;
 317         *t = 0;
 318
 319         this->cached_hostip = ihost;
 320
 321         return this->cached_hostip;
 322 }
 323
 324 void User::CloseSocket()
 325 {
 326         if (this->fd > -1)
 327         {
 328                 ServerInstance->SE->Shutdown(this, 2);
 329                 ServerInstance->SE->Close(this);
 330         }
 331 }
 332
 333 const std::string& User::GetFullHost()
 334 {
 335         if (!this->cached_fullhost.empty())
 336                 return this->cached_fullhost;
 337
 338         char result[MAXBUF];
 339         char* t = result;
 340         for(const char* n = nick.c_str(); *n; n++)
 341                 *t++ = *n;
 342         *t++ = '!';
 343         for(const char* n = ident.c_str(); *n; n++)
 344                 *t++ = *n;
 345         *t++ = '@';
 346         for(const char* n = dhost.c_str(); *n; n++)
 347                 *t++ = *n;
 348         *t = 0;
 349
 350         this->cached_fullhost = result;
 351
 352         return this->cached_fullhost;
 353 }
 354
 355 char* User::MakeWildHost()
 356 {
 357         static char nresult[MAXBUF];
 358         char* t = nresult;
 359         *t++ = '*';     *t++ = '!';
 360         *t++ = '*';     *t++ = '@';
 361         for(const char* n = dhost.c_str(); *n; n++)
 362                 *t++ = *n;
 363         *t = 0;
 364         return nresult;
 365 }
 366
 367 int User::ReadData(void* buffer, size_t size)
 368 {
 369         if (IS_LOCAL(this))
 370         {
 371 #ifndef WIN32
 372                 return read(this->fd, buffer, size);
 373 #else
 374                 return recv(this->fd, (char*)buffer, size, 0);
 375 #endif
 376         }
 377         else
 378                 return 0;
 379 }
 380
 381
 382 const std::string& User::GetFullRealHost()
 383 {
 384         if (!this->cached_fullrealhost.empty())
 385                 return this->cached_fullrealhost;
 386
 387         char fresult[MAXBUF];
 388         char* t = fresult;
 389         for(const char* n = nick.c_str(); *n; n++)
 390                 *t++ = *n;
 391         *t++ = '!';
 392         for(const char* n = ident.c_str(); *n; n++)
 393                 *t++ = *n;
 394         *t++ = '@';
 395         for(const char* n = host.c_str(); *n; n++)
 396                 *t++ = *n;
 397         *t = 0;
 398
 399         this->cached_fullrealhost = fresult;
 400
 401         return this->cached_fullrealhost;
 402 }
 403
 404 bool User::IsInvited(const irc::string &channel)
 405 {
 406         time_t now = ServerInstance->Time();
 407         InvitedList::iterator safei;
 408         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 409         {
 410                 if (channel == i->first)
 411                 {
 412                         if (i->second != 0 && now > i->second)
 413                         {
 414                                 /* Expired invite, remove it. */
 415                                 safei = i;
 416                                 --i;
 417                                 invites.erase(safei);
 418                                 continue;
 419                         }
 420                         return true;
 421                 }
 422         }
 423         return false;
 424 }
 425
 426 InvitedList* User::GetInviteList()
 427 {
 428         time_t now = ServerInstance->Time();
 429         /* Weed out expired invites here. */
 430         InvitedList::iterator safei;
 431         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 432         {
 433                 if (i->second != 0 && now > i->second)
 434                 {
 435                         /* Expired invite, remove it. */
 436                         safei = i;
 437                         --i;
 438                         invites.erase(safei);
 439                 }
 440         }
 441         return &invites;
 442 }
 443
 444 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 445 {
 446         time_t now = ServerInstance->Time();
 447         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 448         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 449         {
 450                 if (channel == i->first)
 451                 {
 452                         if (i->second != 0 && invtimeout > i->second)
 453                         {
 454                                 i->second = invtimeout;
 455                         }
 456
 457                         return;
 458                 }
 459         }
 460         invites.push_back(std::make_pair(channel, invtimeout));
 461 }
 462
 463 void User::RemoveInvite(const irc::string &channel)
 464 {
 465         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 466         {
 467                 if (channel == i->first)
 468                 {
 469                         invites.erase(i);
 470                         return;
 471                 }
 472         }
 473 }
 474
 475 bool User::HasModePermission(unsigned char mode, ModeType type)
 476 {
 477         if (!IS_LOCAL(this))
 478                 return true;
 479
 480         if (!IS_OPER(this))
 481                 return false;
 482
 483         if (mode < 'A' || mode > ('A' + 64)) return false;
 484
 485         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 486
 487 }
 488
 489 bool User::HasPermission(const std::string &command)
 490 {
 491         /*
 492          * users on remote servers can completely bypass all permissions based checks.
 493          * This prevents desyncs when one server has different type/class tags to another.
 494          * That having been said, this does open things up to the possibility of source changes
 495          * allowing remote kills, etc - but if they have access to the src, they most likely have
 496          * access to the conf - so it's an end to a means either way.
 497          */
 498         if (!IS_LOCAL(this))
 499                 return true;
 500
 501         // are they even an oper at all?
 502         if (!IS_OPER(this))
 503         {
 504                 return false;
 505         }
 506
 507         if (!AllowedOperCommands)
 508                 return false;
 509
 510         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 511                 return true;
 512         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 513                 return true;
 514
 515         return false;
 516 }
 517
 518
 519 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 520 {
 521         ServerInstance->Logs->Log("PRIVS", DEBUG, "Checking if I have " + privstr);
 522         if (!IS_LOCAL(this))
 523         {
 524                 ServerInstance->Logs->Log("PRIVS", DEBUG, "Remote (yes)");
 525                 return true;
 526         }
 527
 528         if (!IS_OPER(this))
 529         {
 530                 if (noisy)
 531                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 532                 ServerInstance->Logs->Log("PRIVS", DEBUG, "Not oper (no)");
 533                 return false;
 534         }
 535
 536         if (!AllowedPrivs)
 537         {
 538                 if (noisy)
 539                         this->WriteServ("NOTICE %s :Privset empty(!?)", this->nick.c_str());
 540                 ServerInstance->Logs->Log("PRIVS", DEBUG, "No privs(?) (no)");
 541                 return false;
 542         }
 543
 544         if (AllowedPrivs->find(privstr) != AllowedPrivs->end())
 545         {
 546                 ServerInstance->Logs->Log("PRIVS", DEBUG, "I do have it.");
 547                 return true;
 548         }
 549         else if (AllowedPrivs->find("*") != AllowedPrivs->end())
 550         {
 551                 ServerInstance->Logs->Log("PRIVS", DEBUG, "I allow all.");
 552                 return true;
 553         }
 554
 555         if (noisy)
 556                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), this->oper.c_str(), privstr.c_str());
 557         ServerInstance->Logs->Log("PRIVS", DEBUG, "I don't have it...");
 558         return false;
 559 }
 560
 561 bool User::AddBuffer(const std::string &a)
 562 {
 563         std::string::size_type start = 0;
 564         std::string::size_type i = a.find('\r');
 565
 566         /*
 567          * The old implementation here took a copy, and rfind() on \r, removing as it found them, before
 568          * copying a second time onto the recvq. That's ok, but involves three copies minimum (recv() to buffer,
 569          * buffer to here, here to recvq) - The new method now copies twice (recv() to buffer, buffer to recvq).
 570          *
 571          * We use find() instead of rfind() for clarity, however unlike the old code, our scanning of the string is
 572          * contiguous: as we specify a startpoint, we never see characters we have scanned previously, making this
 573          * marginally faster in cases with a number of \r hidden early on in the buffer.
 574          *
 575          * How it works:
 576          * Start at first pos of string, find first \r, append everything in the chunk (excluding \r) to recvq. Set
 577          * i ahead of the \r, search for next \r, add next chunk to buffer... repeat.
 578          *              -- w00t (7 may, 2008)
 579          */
 580         if (i == std::string::npos)
 581         {
 582                 // no \r that we need to dance around, just add to buffer
 583                 recvq.append(a);
 584         }
 585         else
 586         {
 587                 // While we can find the end of a chunk to add
 588                 while (i != std::string::npos)
 589                 {
 590                         // Append the chunk that we have
 591                         recvq.append(a, start, (i - start));
 592
 593                         // Start looking for the next one
 594                         start = i + 1;
 595                         i = a.find('\r', start);
 596                 }
 597
 598                 if (start != a.length())
 599                 {
 600                         /*
 601                          * This is here to catch a corner case when we get something like:
 602                          * NICK w0
 603                          * 0t\r\nU
 604                          * SER ...
 605                          * in successive calls to us.
 606                          *
 607                          * Without this conditional, the 'U' on the second case will be dropped,
 608                          * which is most *certainly* not the behaviour we want!
 609                          *              -- w00t
 610                          */
 611                         recvq.append(a, start, (a.length() - start));
 612                 }
 613         }
 614
 615         if (this->MyClass && !this->HasPrivPermission("users/flood/increased-buffers") && recvq.length() > this->MyClass->GetRecvqMax())
 616         {
 617                 ServerInstance->Users->QuitUser(this, "RecvQ exceeded");
 618                 ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %lu exceeds connect class maximum of %lu",this->nick.c_str(),(unsigned long int)recvq.length(),this->MyClass->GetRecvqMax());
 619                 return false;
 620         }
 621
 622         return true;
 623 }
 624
 625 bool User::BufferIsReady()
 626 {
 627         return (recvq.find('\n') != std::string::npos);
 628 }
 629
 630 void User::ClearBuffer()
 631 {
 632         recvq.clear();
 633 }
 634
 635 std::string User::GetBuffer()
 636 {
 637         try
 638         {
 639                 if (recvq.empty())
 640                         return "";
 641
 642                 /* Strip any leading \r or \n off the string.
 643                  * Usually there are only one or two of these,
 644                  * so its is computationally cheap to do.
 645                  */
 646                 std::string::iterator t = recvq.begin();
 647                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 648                 {
 649                         recvq.erase(t);
 650                         t = recvq.begin();
 651                 }
 652
 653                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 654                 {
 655                         /* Find the first complete line, return it as the
 656                          * result, and leave the recvq as whats left
 657                          */
 658                         if (*x == '\n')
 659                         {
 660                                 std::string ret = std::string(recvq.begin(), x);
 661                                 recvq.erase(recvq.begin(), x + 1);
 662                                 return ret;
 663                         }
 664                 }
 665                 return "";
 666         }
 667
 668         catch (...)
 669         {
 670                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 671                 return "";
 672         }
 673 }
 674
 675 void User::AddWriteBuf(const std::string &data)
 676 {
 677         if (this->quitting)
 678                 return;
 679
 680         if (this->MyClass && !this->HasPrivPermission("users/flood/increased-buffers") && sendq.length() + data.length() > this->MyClass->GetSendqMax())
 681         {
 682                 /*
 683                  * Fix by brain - Set the error text BEFORE calling, because
 684                  * if we dont it'll recursively  call here over and over again trying
 685                  * to repeatedly add the text to the sendq!
 686                  */
 687                 ServerInstance->Users->QuitUser(this, "SendQ exceeded");
 688                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %lu exceeds connect class maximum of %lu",this->nick.c_str(),(unsigned long int)sendq.length() + data.length(),this->MyClass->GetSendqMax());
 689                 return;
 690         }
 691
 692         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 693                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 694         else
 695                 sendq.append(data);
 696 }
 697
 698 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 699 void User::FlushWriteBuf()
 700 {
 701         if (this->fd == FD_MAGIC_NUMBER)
 702         {
 703                 sendq.clear();
 704                 return;
 705         }
 706
 707         if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 708         {
 709                 int old_sendq_length = sendq.length();
 710                 int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 711
 712                 if (n_sent == -1)
 713                 {
 714                         if (errno == EAGAIN)
 715                         {
 716                                 /* The socket buffer is full. This isnt fatal,
 717                                  * try again later.
 718                                  */
 719                                 ServerInstance->SE->WantWrite(this);
 720                         }
 721                         else
 722                         {
 723                                 /* Fatal error, set write error and bail */
 724                                 ServerInstance->Users->QuitUser(this, errno ? strerror(errno) : "Write error");
 725                                 return;
 726                         }
 727                 }
 728                 else
 729                 {
 730                         /* advance the queue */
 731                         if (n_sent)
 732                                 this->sendq = this->sendq.substr(n_sent);
 733                         /* update the user's stats counters */
 734                         this->bytes_out += n_sent;
 735                         this->cmds_out++;
 736                         if (n_sent != old_sendq_length)
 737                                 this->ServerInstance->SE->WantWrite(this);
 738                 }
 739         }
 740
 741         /* note: NOT else if! */
 742         if (this->sendq.empty())
 743         {
 744                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 745         }
 746 }
 747
 748 void User::Oper(const std::string &opertype, const std::string &opername)
 749 {
 750         if (this->IsModeSet('o'))
 751                 this->UnOper();
 752
 753         this->modes[UM_OPERATOR] = 1;
 754         this->WriteServ("MODE %s :+o", this->nick.c_str());
 755         FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 756
 757         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')", this->nick.c_str(), this->ident.c_str(), this->host.c_str(), irc::Spacify(opertype.c_str()), opername.c_str());
 758         this->WriteNumeric(381, "%s :You are now %s %s", this->nick.c_str(), strchr("aeiouAEIOU", *opertype.c_str()) ? "an" : "a", irc::Spacify(opertype.c_str()));
 759
 760         ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick.c_str(), this->ident.c_str(), this->host.c_str(), opertype.c_str());
 761         this->oper.assign(opertype, 0, 512);
 762         ServerInstance->Users->all_opers.push_back(this);
 763
 764         opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper.c_str());
 765         if (iter_opertype != ServerInstance->Config->opertypes.end())
 766         {
 767                 if (AllowedOperCommands)
 768                         AllowedOperCommands->clear();
 769                 else
 770                         AllowedOperCommands = new std::set<std::string>;
 771
 772                 if (AllowedPrivs)
 773                         AllowedPrivs->clear();
 774                 else
 775                         AllowedPrivs = new std::set<std::string>;
 776
 777                 AllowedUserModes.reset();
 778                 AllowedChanModes.reset();
 779                 this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 780
 781                 std::string myclass, mycmd, mypriv;
 782                 irc::spacesepstream Classes(iter_opertype->second);
 783                 while (Classes.GetToken(myclass))
 784                 {
 785                         operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass.c_str());
 786                         if (iter_operclass != ServerInstance->Config->operclass.end())
 787                         {
 788                                 /* Process commands */
 789                                 irc::spacesepstream CommandList(iter_operclass->second.commandlist);
 790                                 while (CommandList.GetToken(mycmd))
 791                                 {
 792                                         this->AllowedOperCommands->insert(mycmd);
 793                                 }
 794
 795                                 irc::spacesepstream PrivList(iter_operclass->second.privs);
 796                                 while (PrivList.GetToken(mypriv))
 797                                 {
 798                                         this->AllowedPrivs->insert(mypriv);
 799                                 }
 800
 801                                 for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 802                                 {
 803                                         if (*c == '*')
 804                                         {
 805                                                 this->AllowedUserModes.set();
 806                                         }
 807                                         else
 808                                         {
 809                                                 this->AllowedUserModes[*c - 'A'] = true;
 810                                         }
 811                                 }
 812
 813                                 for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 814                                 {
 815                                         if (*c == '*')
 816                                         {
 817                                                 this->AllowedChanModes.set();
 818                                         }
 819                                         else
 820                                         {
 821                                                 this->AllowedChanModes[*c - 'A'] = true;
 822                                         }
 823                                 }
 824                         }
 825                 }
 826         }
 827
 828         FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 829 }
 830
 831 void User::UnOper()
 832 {
 833         if (IS_OPER(this))
 834         {
 835                 /*
 836                  * unset their oper type (what IS_OPER checks).
 837                  * note, order is important - this must come before modes as -o attempts
 838                  * to call UnOper. -- w00t
 839                  */
 840                 this->oper.clear();
 841
 842                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 843                 std::string moderemove("-");
 844
 845                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 846                 {
 847                         ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 848                         if (mh && mh->NeedsOper())
 849                                 moderemove += letter;
 850                 }
 851
 852                 std::vector<std::string> parameters;
 853                 parameters.push_back(this->nick);
 854                 parameters.push_back(moderemove);
 855
 856                 ServerInstance->Parser->CallHandler("MODE", parameters, this);
 857
 858                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 859                 ServerInstance->Users->all_opers.remove(this);
 860
 861                 if (AllowedOperCommands)
 862                 {
 863                         delete AllowedOperCommands;
 864                         AllowedOperCommands = NULL;
 865                 }
 866
 867                 if (AllowedPrivs)
 868                 {
 869                         delete AllowedPrivs;
 870                         AllowedPrivs = NULL;
 871                 }
 872
 873                 AllowedUserModes.reset();
 874                 AllowedChanModes.reset();
 875         }
 876 }
 877
 878 /* adds or updates an entry in the whowas list */
 879 void User::AddToWhoWas()
 880 {
 881         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 882         if (whowas_command)
 883         {
 884                 std::deque<classbase*> params;
 885                 params.push_back(this);
 886                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 887         }
 888 }
 889
 890 /*
 891  * Check class restrictions
 892  */
 893 void User::CheckClass()
 894 {
 895         ConnectClass* a = this->MyClass;
 896
 897         if ((!a) || (a->GetType() == CC_DENY))
 898         {
 899                 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
 900                 return;
 901         }
 902         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 903         {
 904                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 905                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 906                 return;
 907         }
 908         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 909         {
 910                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 911                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 912                 return;
 913         }
 914
 915         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 916 }
 917
 918 bool User::CheckLines(bool doZline)
 919 {
 920         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 921
 922         if (!this->exempt)
 923         {
 924                 for (int n = 0; check[n]; ++n)
 925                 {
 926                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 927
 928                         if (r)
 929                         {
 930                                 r->Apply(this);
 931                                 return true;
 932                         }
 933                 }
 934         }
 935
 936         return false;
 937 }
 938
 939 void User::FullConnect()
 940 {
 941         ServerInstance->stats->statsConnects++;
 942         this->idle_lastmsg = ServerInstance->Time();
 943
 944         /*
 945          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 946          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 947          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 948          * Don't remove this! -- w00t
 949          */
 950         this->SetClass();
 951
 952         /* Check the password, if one is required by the user's connect class.
 953          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 954          */
 955         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 956         {
 957                 ServerInstance->Users->QuitUser(this, "Invalid password");
 958                 return;
 959         }
 960
 961         if (this->CheckLines())
 962                 return;
 963
 964         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 965         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick.c_str(), ServerInstance->Config->Network, this->nick.c_str(), this->ident.c_str(), this->host.c_str());
 966         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version InspIRCd-1.2",this->nick.c_str(),ServerInstance->Config->ServerName);
 967         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 968         this->WriteNumeric(RPL_SERVERVERSION, "%s %s InspIRCd-1.2 %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 969
 970         ServerInstance->Config->Send005(this);
 971         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 972
 973
 974         this->ShowMOTD();
 975
 976         /* Now registered */
 977         if (ServerInstance->Users->unregistered_count)
 978                 ServerInstance->Users->unregistered_count--;
 979
 980         /* Trigger LUSERS output, give modules a chance too */
 981         int MOD_RESULT = 0;
 982         std::string command("LUSERS");
 983         std::vector<std::string> parameters;
 984         FOREACH_RESULT(I_OnPreCommand, OnPreCommand(command, parameters, this, true, "LUSERS"));
 985         if (!MOD_RESULT)
 986                 ServerInstance->CallCommandHandler(command, parameters, this);
 987
 988         /*
 989          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 990          * for a user that doesn't exist yet.
 991          */
 992         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 993
 994         this->registered = REG_ALL;
 995
 996         ServerInstance->PI->Introduce(this);
 997
 998         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 999
1000         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]", this->GetPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
1001         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
1002         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
1003 }
1004
1005 /** User::UpdateNick()
1006  * re-allocates a nick in the user_hash after they change nicknames,
1007  * returns a pointer to the new user as it may have moved
1008  */
1009 User* User::UpdateNickHash(const char* New)
1010 {
1011         //user_hash::iterator newnick;
1012         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
1013
1014         if (!irc::string(this->nick.c_str()).compare(New))
1015                 return oldnick->second;
1016
1017         if (oldnick == ServerInstance->Users->clientlist->end())
1018                 return NULL; /* doesnt exist */
1019
1020         User* olduser = oldnick->second;
1021         ServerInstance->Users->clientlist->erase(oldnick);
1022         (*(ServerInstance->Users->clientlist))[New] = olduser;
1023         return olduser;
1024 }
1025
1026 void User::InvalidateCache()
1027 {
1028         /* Invalidate cache */
1029         cached_fullhost.clear();
1030         cached_hostip.clear();
1031         cached_makehost.clear();
1032         cached_fullrealhost.clear();
1033 }
1034
1035 bool User::ForceNickChange(const char* newnick)
1036 {
1037         int MOD_RESULT = 0;
1038
1039         this->InvalidateCache();
1040
1041         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1042
1043         if (MOD_RESULT)
1044         {
1045                 ServerInstance->stats->statsCollisions++;
1046                 return false;
1047         }
1048
1049         std::deque<classbase*> dummy;
1050         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1051         if (nickhandler) // wtfbbq, when would this not be here
1052         {
1053                 std::vector<std::string> parameters;
1054                 nickhandler->HandleInternal(1, dummy);
1055                 parameters.push_back(newnick);
1056                 bool result = (ServerInstance->Parser->CallHandler("NICK", parameters, this) == CMD_SUCCESS);
1057                 nickhandler->HandleInternal(0, dummy);
1058                 return result;
1059         }
1060
1061         // Unreachable, we hope
1062         return false;
1063 }
1064
1065 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1066 {
1067         this->cachedip = "";
1068
1069         switch (protocol_family)
1070         {
1071 #ifdef SUPPORT_IP6LINKS
1072                 case AF_INET6:
1073                 {
1074                         sockaddr_in6* sin = new sockaddr_in6;
1075                         sin->sin6_family = AF_INET6;
1076                         sin->sin6_port = port;
1077                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1078                         this->ip = (sockaddr*)sin;
1079                 }
1080                 break;
1081 #endif
1082                 case AF_INET:
1083                 {
1084                         sockaddr_in* sin = new sockaddr_in;
1085                         sin->sin_family = AF_INET;
1086                         sin->sin_port = port;
1087                         inet_pton(AF_INET, sip, &sin->sin_addr);
1088                         this->ip = (sockaddr*)sin;
1089                 }
1090                 break;
1091                 default:
1092                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick.c_str());
1093                 break;
1094         }
1095 }
1096
1097 int User::GetPort()
1098 {
1099         if (this->ip == NULL)
1100                 return 0;
1101
1102         switch (this->GetProtocolFamily())
1103         {
1104 #ifdef SUPPORT_IP6LINKS
1105                 case AF_INET6:
1106                 {
1107                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1108                         return sin->sin6_port;
1109                 }
1110                 break;
1111 #endif
1112                 case AF_INET:
1113                 {
1114                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1115                         return sin->sin_port;
1116                 }
1117                 break;
1118                 default:
1119                 break;
1120         }
1121         return 0;
1122 }
1123
1124 int User::GetProtocolFamily()
1125 {
1126         if (this->ip == NULL)
1127                 return 0;
1128
1129         sockaddr_in* sin = (sockaddr_in*)this->ip;
1130         return sin->sin_family;
1131 }
1132
1133 const char* User::GetCIDRMask(int range)
1134 {
1135         static char buf[44];
1136
1137         if (this->ip == NULL)
1138                 return "";
1139
1140         if (range < 0)
1141                 throw "Negative range, sorry, no.";
1142
1143         /*
1144          * Original code written by Oliver Lupton (Om).
1145          * Integrated by me. Thanks. :) -- w00t
1146          */
1147         switch (this->GetProtocolFamily())
1148         {
1149 #ifdef SUPPORT_IP6LINKS
1150                 case AF_INET6:
1151                 {
1152                         /* unsigned char s6_addr[16]; */
1153                         struct in6_addr v6;
1154                         sockaddr_in6* sin;
1155                         int i, bytestozero, extrabits;
1156                         char buffer[40];
1157
1158                         if(range > 128)
1159                                 throw "CIDR mask width greater than address width (IPv6, 128 bit)";
1160
1161                         /* Access the user's IP structure directly */
1162                         sin = (sockaddr_in6*)this->ip;
1163
1164                         /* To create the CIDR mask we want to set all the bits after 'range' bits of the address
1165                          * to zero. This means the last (128 - range) bits of the address must be set to zero.
1166                          * Hence this number divided by 8 is the number of whole bytes from the end of the address
1167                          * which must be set to zero.
1168                          */
1169                         bytestozero = (128 - range) / 8;
1170
1171                         /* Some of the least significant bits of the next most significant byte may also have to
1172                          * be zeroed. The number of bits is the remainder of the above division.
1173                          */
1174                         extrabits = (128 - range) % 8;
1175
1176                         /* Populate our working struct with the parts of the user's IP which are required in the
1177                          * final CIDR mask. Set all the subsequent bytes to zero.
1178                          * (16 - bytestozero) is the number of bytes which must be populated with actual IP data.
1179                          */
1180                         for(i = 0; i < (16 - bytestozero); i++)
1181                         {
1182                                 v6.s6_addr[i] = sin->sin6_addr.s6_addr[i];
1183                         }
1184
1185                         /* And zero all the remaining bytes in the IP. */
1186                         for(; i < 16; i++)
1187                         {
1188                                 v6.s6_addr[i] = 0;
1189                         }
1190
1191                         /* And finally, zero the extra bits required. */
1192                         v6.s6_addr[15 - bytestozero] = (v6.s6_addr[15 - bytestozero] >> extrabits) << extrabits;
1193
1194                         snprintf(buf, 44, "%s/%d", inet_ntop(AF_INET6, &v6, buffer, 40), range);
1195                         return buf;
1196                 }
1197                 break;
1198 #endif
1199                 case AF_INET:
1200                 {
1201                         struct in_addr v4;
1202                         sockaddr_in* sin;
1203                         char buffer[16];
1204
1205                         if (range > 32)
1206                                 throw "CIDR mask width greater than address width (IPv4, 32 bit)";
1207
1208                         /* Users already have a sockaddr* pointer (User::ip) which contains either a v4 or v6 structure */
1209                         sin = (sockaddr_in*)this->ip;
1210                         v4.s_addr = sin->sin_addr.s_addr;
1211
1212                         /* To create the CIDR mask we want to set all the bits after 'range' bits of the address
1213                          * to zero. This means the last (32 - range) bits of the address must be set to zero.
1214                          * This is done by shifting the value right and then back left by (32 - range) bits.
1215                          */
1216                         if(range > 0)
1217                         {
1218                                 v4.s_addr = ntohl(v4.s_addr);
1219                                 v4.s_addr = (v4.s_addr >> (32 - range)) << (32 - range);
1220                                 v4.s_addr = htonl(v4.s_addr);
1221                         }
1222                         else
1223                         {
1224                                 /* a range of zero would cause a 32 bit value to be shifted by 32 bits.
1225                                  * this has undefined behaviour, but for CIDR purposes the resulting mask
1226                                  * from a.b.c.d/0 is 0.0.0.0/0
1227                                  */
1228                                 v4.s_addr = 0;
1229                         }
1230
1231                         snprintf(buf, 44, "%s/%d", inet_ntop(AF_INET, &v4, buffer, 16), range);
1232                         return buf;
1233                 }
1234                 break;
1235         }
1236
1237         return ""; // unused, but oh well
1238 }
1239
1240 const char* User::GetIPString()
1241 {
1242         static char buf[40];
1243
1244         if (this->ip == NULL)
1245                 return "";
1246
1247         if (!this->cachedip.empty())
1248                 return this->cachedip.c_str();
1249
1250         switch (this->GetProtocolFamily())
1251         {
1252 #ifdef SUPPORT_IP6LINKS
1253                 case AF_INET6:
1254                 {
1255                         static char temp[1024];
1256
1257                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1258                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1259                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1260                         if (*buf == ':')
1261                         {
1262                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1263                                 *temp = '0';
1264                                 this->cachedip = temp;
1265                                 return temp;
1266                         }
1267
1268                         this->cachedip = buf;
1269                         return buf;
1270                 }
1271                 break;
1272 #endif
1273                 case AF_INET:
1274                 {
1275                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1276                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1277                         this->cachedip = buf;
1278                         return buf;
1279                 }
1280                 break;
1281                 default:
1282                 break;
1283         }
1284
1285         // Unreachable, probably
1286         return "";
1287 }
1288
1289 /** NOTE: We cannot pass a const reference to this method.
1290  * The string is changed by the workings of the method,
1291  * so that if we pass const ref, we end up copying it to
1292  * something we can change anyway. Makes sense to just let
1293  * the compiler do that copy for us.
1294  */
1295 void User::Write(std::string text)
1296 {
1297         if (!ServerInstance->SE->BoundsCheckFd(this))
1298                 return;
1299
1300         try
1301         {
1302                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1303                 text.append("\r\n");
1304         }
1305         catch (...)
1306         {
1307                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1308                 return;
1309         }
1310
1311         if (this->GetIOHook())
1312         {
1313                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1314                  * implement their own buffering mechanisms
1315                  */
1316                 try
1317                 {
1318                         this->GetIOHook()->OnRawSocketWrite(this->fd, text.data(), text.length());
1319                 }
1320                 catch (CoreException& modexcept)
1321                 {
1322                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1323                 }
1324         }
1325         else
1326         {
1327                 this->AddWriteBuf(text);
1328         }
1329         ServerInstance->stats->statsSent += text.length();
1330         this->ServerInstance->SE->WantWrite(this);
1331 }
1332
1333 /** Write()
1334  */
1335 void User::Write(const char *text, ...)
1336 {
1337         va_list argsPtr;
1338         char textbuffer[MAXBUF];
1339
1340         va_start(argsPtr, text);
1341         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1342         va_end(argsPtr);
1343
1344         this->Write(std::string(textbuffer));
1345 }
1346
1347 void User::WriteServ(const std::string& text)
1348 {
1349         char textbuffer[MAXBUF];
1350
1351         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1352         this->Write(std::string(textbuffer));
1353 }
1354
1355 /** WriteServ()
1356  *  Same as Write(), except `text' is prefixed with `:server.name '.
1357  */
1358 void User::WriteServ(const char* text, ...)
1359 {
1360         va_list argsPtr;
1361         char textbuffer[MAXBUF];
1362
1363         va_start(argsPtr, text);
1364         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1365         va_end(argsPtr);
1366
1367         this->WriteServ(std::string(textbuffer));
1368 }
1369
1370
1371 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1372 {
1373         va_list argsPtr;
1374         char textbuffer[MAXBUF];
1375
1376         va_start(argsPtr, text);
1377         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1378         va_end(argsPtr);
1379
1380         this->WriteNumeric(numeric, std::string(textbuffer));
1381 }
1382
1383 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1384 {
1385         char textbuffer[MAXBUF];
1386         int MOD_RESULT = 0;
1387
1388         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1389
1390         if (MOD_RESULT)
1391                 return;
1392
1393         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1394         this->Write(std::string(textbuffer));
1395 }
1396
1397 void User::WriteFrom(User *user, const std::string &text)
1398 {
1399         char tb[MAXBUF];
1400
1401         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1402
1403         this->Write(std::string(tb));
1404 }
1405
1406
1407 /* write text from an originating user to originating user */
1408
1409 void User::WriteFrom(User *user, const char* text, ...)
1410 {
1411         va_list argsPtr;
1412         char textbuffer[MAXBUF];
1413
1414         va_start(argsPtr, text);
1415         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1416         va_end(argsPtr);
1417
1418         this->WriteFrom(user, std::string(textbuffer));
1419 }
1420
1421
1422 /* write text to an destination user from a source user (e.g. user privmsg) */
1423
1424 void User::WriteTo(User *dest, const char *data, ...)
1425 {
1426         char textbuffer[MAXBUF];
1427         va_list argsPtr;
1428
1429         va_start(argsPtr, data);
1430         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1431         va_end(argsPtr);
1432
1433         this->WriteTo(dest, std::string(textbuffer));
1434 }
1435
1436 void User::WriteTo(User *dest, const std::string &data)
1437 {
1438         dest->WriteFrom(this, data);
1439 }
1440
1441
1442 void User::WriteCommon(const char* text, ...)
1443 {
1444         char textbuffer[MAXBUF];
1445         va_list argsPtr;
1446
1447         if (this->registered != REG_ALL)
1448                 return;
1449
1450         va_start(argsPtr, text);
1451         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1452         va_end(argsPtr);
1453
1454         this->WriteCommon(std::string(textbuffer));
1455 }
1456
1457 void User::WriteCommon(const std::string &text)
1458 {
1459         bool sent_to_at_least_one = false;
1460         char tb[MAXBUF];
1461
1462         if (this->registered != REG_ALL)
1463                 return;
1464
1465         uniq_id++;
1466
1467         if (!already_sent)
1468                 InitializeAlreadySent(ServerInstance->SE);
1469
1470         /* We dont want to be doing this n times, just once */
1471         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost().c_str(),text.c_str());
1472         std::string out = tb;
1473
1474         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1475         {
1476                 CUList* ulist = v->first->GetUsers();
1477                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1478                 {
1479                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1480                         {
1481                                 already_sent[i->first->fd] = uniq_id;
1482                                 i->first->Write(out);
1483                                 sent_to_at_least_one = true;
1484                         }
1485                 }
1486         }
1487
1488         /*
1489          * if the user was not in any channels, no users will receive the text. Make sure the user
1490          * receives their OWN message for WriteCommon
1491          */
1492         if (!sent_to_at_least_one)
1493         {
1494                 this->Write(std::string(tb));
1495         }
1496 }
1497
1498
1499 /* write a formatted string to all users who share at least one common
1500  * channel, NOT including the source user e.g. for use in QUIT
1501  */
1502
1503 void User::WriteCommonExcept(const char* text, ...)
1504 {
1505         char textbuffer[MAXBUF];
1506         va_list argsPtr;
1507
1508         va_start(argsPtr, text);
1509         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1510         va_end(argsPtr);
1511
1512         this->WriteCommonExcept(std::string(textbuffer));
1513 }
1514
1515 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1516 {
1517         char tb1[MAXBUF];
1518         char tb2[MAXBUF];
1519
1520         if (this->registered != REG_ALL)
1521                 return;
1522
1523         uniq_id++;
1524
1525         if (!already_sent)
1526                 InitializeAlreadySent(ServerInstance->SE);
1527
1528         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1529         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1530         std::string out1 = tb1;
1531         std::string out2 = tb2;
1532
1533         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1534         {
1535                 CUList *ulist = v->first->GetUsers();
1536                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1537                 {
1538                         if (this != i->first)
1539                         {
1540                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1541                                 {
1542                                         already_sent[i->first->fd] = uniq_id;
1543                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1544                                 }
1545                         }
1546                 }
1547         }
1548 }
1549
1550 void User::WriteCommonExcept(const std::string &text)
1551 {
1552         char tb1[MAXBUF];
1553         std::string out1;
1554
1555         if (this->registered != REG_ALL)
1556                 return;
1557
1558         uniq_id++;
1559
1560         if (!already_sent)
1561                 InitializeAlreadySent(ServerInstance->SE);
1562
1563         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost().c_str(),text.c_str());
1564         out1 = tb1;
1565
1566         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1567         {
1568                 CUList *ulist = v->first->GetUsers();
1569                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1570                 {
1571                         if (this != i->first)
1572                         {
1573                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1574                                 {
1575                                         already_sent[i->first->fd] = uniq_id;
1576                                         i->first->Write(out1);
1577                                 }
1578                         }
1579                 }
1580         }
1581
1582 }
1583
1584 void User::WriteWallOps(const std::string &text)
1585 {
1586         if (!IS_LOCAL(this))
1587                 return;
1588
1589         std::string wallop("WALLOPS :");
1590         wallop.append(text);
1591
1592         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1593         {
1594                 User* t = *i;
1595                 if (t->IsModeSet('w'))
1596                         this->WriteTo(t,wallop);
1597         }
1598 }
1599
1600 void User::WriteWallOps(const char* text, ...)
1601 {
1602         if (!IS_LOCAL(this))
1603                 return;
1604
1605         char textbuffer[MAXBUF];
1606         va_list argsPtr;
1607
1608         va_start(argsPtr, text);
1609         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1610         va_end(argsPtr);
1611
1612         this->WriteWallOps(std::string(textbuffer));
1613 }
1614
1615 /* return 0 or 1 depending if users u and u2 share one or more common channels
1616  * (used by QUIT, NICK etc which arent channel specific notices)
1617  *
1618  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1619  * the first users channels then the second users channels within the outer loop,
1620  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1621  * all possible iterations). However this new function instead checks against the
1622  * channel's userlist in the inner loop which is a std::map<User*,User*>
1623  * and saves us time as we already know what pointer value we are after.
1624  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1625  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1626  */
1627 bool User::SharesChannelWith(User *other)
1628 {
1629         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1630                 return false;
1631
1632         /* Outer loop */
1633         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1634         {
1635                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1636                  * by replacing it with a map::find which *should* be more efficient
1637                  */
1638                 if (i->first->HasUser(other))
1639                         return true;
1640         }
1641         return false;
1642 }
1643
1644 bool User::ChangeName(const char* gecos)
1645 {
1646         if (!this->fullname.compare(gecos))
1647                 return true;
1648
1649         if (IS_LOCAL(this))
1650         {
1651                 int MOD_RESULT = 0;
1652                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1653                 if (MOD_RESULT)
1654                         return false;
1655                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1656         }
1657         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1658
1659         return true;
1660 }
1661
1662 bool User::ChangeDisplayedHost(const char* shost)
1663 {
1664         if (dhost == shost)
1665                 return true;
1666
1667         if (IS_LOCAL(this))
1668         {
1669                 int MOD_RESULT = 0;
1670                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1671                 if (MOD_RESULT)
1672                         return false;
1673         }
1674
1675         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1676
1677         int MOD_RESULT = 0;
1678         FOREACH_RESULT(I_OnHostCycle, OnHostCycle(this));
1679
1680         if (this->ServerInstance->Config->CycleHosts && !MOD_RESULT)
1681                 this->WriteCommonExcept("QUIT :Changing hosts");
1682
1683         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1684         this->dhost.assign(shost, 0, 64);
1685
1686         this->InvalidateCache();
1687
1688         if (this->ServerInstance->Config->CycleHosts && !MOD_RESULT)
1689         {
1690                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1691                 {
1692                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name.c_str());
1693                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1694                         if (n.length() > 0)
1695                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name.c_str(), n.c_str());
1696                 }
1697         }
1698
1699         if (IS_LOCAL(this))
1700                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1701
1702         return true;
1703 }
1704
1705 bool User::ChangeIdent(const char* newident)
1706 {
1707         if (this->ident == newident)
1708                 return true;
1709
1710         int MOD_RESULT = 0;
1711         FOREACH_RESULT(I_OnHostCycle, OnHostCycle(this));
1712
1713         if (this->ServerInstance->Config->CycleHosts && !MOD_RESULT)
1714                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1715
1716         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1717
1718         this->InvalidateCache();
1719
1720         if (this->ServerInstance->Config->CycleHosts && !MOD_RESULT)
1721         {
1722                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1723                 {
1724                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name.c_str());
1725                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1726                         if (n.length() > 0)
1727                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name.c_str(), n.c_str());
1728                 }
1729         }
1730
1731         return true;
1732 }
1733
1734 void User::SendAll(const char* command, const char* text, ...)
1735 {
1736         char textbuffer[MAXBUF];
1737         char formatbuffer[MAXBUF];
1738         va_list argsPtr;
1739
1740         va_start(argsPtr, text);
1741         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1742         va_end(argsPtr);
1743
1744         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1745         std::string fmt = formatbuffer;
1746
1747         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1748         {
1749                 (*i)->Write(fmt);
1750         }
1751 }
1752
1753
1754 std::string User::ChannelList(User* source)
1755 {
1756         std::string list;
1757
1758         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1759         {
1760                 /* If the target is the same as the sender, let them see all their channels.
1761                  * If the channel is NOT private/secret OR the user shares a common channel
1762                  * If the user is an oper, and the <options:operspywhois> option is set.
1763                  */
1764                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1765                 {
1766                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1767                 }
1768         }
1769
1770         return list;
1771 }
1772
1773 void User::SplitChanList(User* dest, const std::string &cl)
1774 {
1775         std::string line;
1776         std::ostringstream prefix;
1777         std::string::size_type start, pos, length;
1778
1779         prefix << this->nick << " " << dest->nick << " :";
1780         line = prefix.str();
1781         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1782
1783         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1784         {
1785                 length = (pos == std::string::npos) ? cl.length() : pos;
1786
1787                 if (line.length() + namelen + length - start > 510)
1788                 {
1789                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1790                         line = prefix.str();
1791                 }
1792
1793                 if(pos == std::string::npos)
1794                 {
1795                         line.append(cl.substr(start, length - start));
1796                         break;
1797                 }
1798                 else
1799                 {
1800                         line.append(cl.substr(start, length - start + 1));
1801                 }
1802         }
1803
1804         if (line.length())
1805         {
1806                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1807         }
1808 }
1809
1810 /*
1811  * Sets a user's connection class.
1812  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1813  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1814  * then their ip will be taken as 'priority' anyway, so for example,
1815  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1816  */
1817 ConnectClass* User::SetClass(const std::string &explicit_name)
1818 {
1819         ConnectClass *found = NULL;
1820
1821         if (!IS_LOCAL(this))
1822                 return NULL;
1823
1824         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1825
1826         if (!explicit_name.empty())
1827         {
1828                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1829                 {
1830                         ConnectClass* c = *i;
1831
1832                         if (c->GetDisabled())
1833                                 continue; // can't possibly match, removed from conf
1834
1835                         if (explicit_name == c->GetName())
1836                         {
1837                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1838                                 found = c;
1839                         }
1840                 }
1841         }
1842         else
1843         {
1844                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1845                 {
1846                         ConnectClass* c = *i;
1847
1848                         if (c->GetType() == CC_ALLOW)
1849                         {
1850                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "ALLOW %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1851                         }
1852                         else
1853                         {
1854                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "DENY %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1855                         }
1856
1857                         /* if it's disabled, we can't match this one. */
1858                         if (c->GetDisabled())
1859                         {
1860                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class disabled");
1861                                 continue;
1862                         }
1863
1864                         /* check if host matches.. */
1865                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1866                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1867                         {
1868                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1869                                 continue;
1870                         }
1871
1872                         /*
1873                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1874                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1875                          */
1876                         if (c->limit && (c->RefCount + 1 >= c->limit))
1877                         {
1878                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1879                                 continue;
1880                         }
1881
1882                         /* if it requires a port ... */
1883                         if (c->GetPort())
1884                         {
1885                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", c->GetPort());
1886
1887                                 /* and our port doesn't match, fail. */
1888                                 if (this->GetPort() != c->GetPort())
1889                                 {
1890                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Port match failed (%d)", this->GetPort());
1891                                         continue;
1892                                 }
1893                         }
1894
1895                         /* we stop at the first class that meets ALL critera. */
1896                         found = c;
1897                         break;
1898                 }
1899         }
1900
1901         /*
1902          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1903          */
1904         if (found)
1905         {
1906                 /* only fiddle with refcounts if they are already in a class .. */
1907                 if (this->MyClass)
1908                 {
1909                         if (found == this->MyClass) // no point changing this shit :P
1910                                 return this->MyClass;
1911                         this->MyClass->RefCount--;
1912                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1913                 }
1914
1915                 this->MyClass = found;
1916                 this->MyClass->RefCount++;
1917                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1918         }
1919
1920         return this->MyClass;
1921 }
1922
1923 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1924  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1925  * then their ip will be taken as 'priority' anyway, so for example,
1926  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1927  */
1928 ConnectClass* User::GetClass()
1929 {
1930         return this->MyClass;
1931 }
1932
1933 void User::PurgeEmptyChannels()
1934 {
1935         std::vector<Channel*> to_delete;
1936
1937         // firstly decrement the count on each channel
1938         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1939         {
1940                 f->first->RemoveAllPrefixes(this);
1941                 if (f->first->DelUser(this) == 0)
1942                 {
1943                         /* No users left in here, mark it for deletion */
1944                         try
1945                         {
1946                                 to_delete.push_back(f->first);
1947                         }
1948                         catch (...)
1949                         {
1950                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1951                         }
1952                 }
1953         }
1954
1955         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1956         {
1957                 Channel* thischan = *n;
1958                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1959                 if (i2 != ServerInstance->chanlist->end())
1960                 {
1961                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1962                         delete i2->second;
1963                         ServerInstance->chanlist->erase(i2);
1964                         this->chans.erase(*n);
1965                 }
1966         }
1967
1968         this->UnOper();
1969 }
1970
1971 void User::ShowMOTD()
1972 {
1973         if (!ServerInstance->Config->MOTD.size())
1974         {
1975                 this->WriteNumeric(ERR_NOMOTD, "%s :Message of the day file is missing.",this->nick.c_str());
1976                 return;
1977         }
1978         this->WriteNumeric(RPL_MOTDSTART, "%s :%s message of the day", this->nick.c_str(), ServerInstance->Config->ServerName);
1979
1980         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1981                 this->WriteNumeric(RPL_MOTD, "%s :- %s",this->nick.c_str(),i->c_str());
1982
1983         this->WriteNumeric(RPL_ENDOFMOTD, "%s :End of message of the day.", this->nick.c_str());
1984 }
1985
1986 void User::ShowRULES()
1987 {
1988         if (!ServerInstance->Config->RULES.size())
1989         {
1990                 this->WriteNumeric(ERR_NORULES, "%s :RULES File is missing",this->nick.c_str());
1991                 return;
1992         }
1993
1994         this->WriteNumeric(RPL_RULESTART, "%s :- %s Server Rules -",this->nick.c_str(),ServerInstance->Config->ServerName);
1995
1996         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1997                 this->WriteNumeric(RPL_RULES, "%s :- %s",this->nick.c_str(),i->c_str());
1998
1999         this->WriteNumeric(RPL_RULESEND, "%s :End of RULES command.",this->nick.c_str());
2000 }
2001
2002 void User::HandleEvent(EventType et, int errornum)
2003 {
2004         if (this->quitting) // drop everything, user is due to be quit
2005                 return;
2006
2007         switch (et)
2008         {
2009                 case EVENT_READ:
2010                         ServerInstance->ProcessUser(this);
2011                 break;
2012                 case EVENT_WRITE:
2013                         this->FlushWriteBuf();
2014                 break;
2015                 case EVENT_ERROR:
2016                         ServerInstance->Users->QuitUser(this, errornum ? strerror(errornum) : "Client closed the connection");
2017                 break;
2018         }
2019 }
2020
2021 void User::SetOperQuit(const std::string &oquit)
2022 {
2023         operquitmsg = oquit;
2024 }
2025
2026 const std::string& User::GetOperQuit()
2027 {
2028         return operquitmsg;
2029 }
2030
2031 void User::IncreasePenalty(int increase)
2032 {
2033         this->Penalty += increase;
2034 }
2035
2036 void User::DecreasePenalty(int decrease)
2037 {
2038         this->Penalty -= decrease;
2039 }
2040
2041 VisData::VisData()
2042 {
2043 }
2044
2045 VisData::~VisData()
2046 {
2047 }
2048
2049 bool VisData::VisibleTo(User* user)
2050 {
2051         return true;
2052 }
2053