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 = NULL;
  25
  26
  27 void InitializeAlreadySent(SocketEngine* SE)
  28 {
  29         already_sent = new unsigned long[SE->GetMaxFds()];
  30         memset(already_sent, 0, sizeof(already_sent));
  31 }
  32
  33 /* XXX: Used for speeding up WriteCommon operations */
  34 unsigned long uniq_id = 1;
  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(501, "%s %c :is unknown snomask char to me", this->nick, *c);
  85
  86                                 oldadding = adding;
  87                         break;
  88                 }
  89
  90                 *c++;
  91         }
  92
  93         return output;
  94 }
  95
  96 void User::StartDNSLookup()
  97 {
  98         try
  99         {
 100                 bool cached;
 101                 const char* sip = this->GetIPString(false);
 102
 103                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
 104                 if (!strncmp(sip, "0::ffff:", 8))
 105                         res_reverse = new UserResolver(this->ServerInstance, this, sip + 8, DNS_QUERY_PTR4, cached);
 106                 else
 107                         res_reverse = new UserResolver(this->ServerInstance, this, sip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 108
 109                 this->ServerInstance->AddResolver(res_reverse, cached);
 110         }
 111         catch (CoreException& e)
 112         {
 113                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 114         }
 115 }
 116
 117 bool User::IsNoticeMaskSet(unsigned char sm)
 118 {
 119         return (snomasks[sm-65]);
 120 }
 121
 122 void User::SetNoticeMask(unsigned char sm, bool value)
 123 {
 124         snomasks[sm-65] = value;
 125 }
 126
 127 const char* User::FormatNoticeMasks()
 128 {
 129         static char data[MAXBUF];
 130         int offset = 0;
 131
 132         for (int n = 0; n < 64; n++)
 133         {
 134                 if (snomasks[n])
 135                         data[offset++] = n+65;
 136         }
 137
 138         data[offset] = 0;
 139         return data;
 140 }
 141
 142
 143
 144 bool User::IsModeSet(unsigned char m)
 145 {
 146         return (modes[m-65]);
 147 }
 148
 149 void User::SetMode(unsigned char m, bool value)
 150 {
 151         modes[m-65] = value;
 152 }
 153
 154 const char* User::FormatModes()
 155 {
 156         static char data[MAXBUF];
 157         int offset = 0;
 158         for (int n = 0; n < 64; n++)
 159         {
 160                 if (modes[n])
 161                         data[offset++] = n+65;
 162         }
 163         data[offset] = 0;
 164         return data;
 165 }
 166
 167 void User::DecrementModes()
 168 {
 169         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 170         for (unsigned char n = 'A'; n <= 'z'; n++)
 171         {
 172                 if (modes[n-65])
 173                 {
 174                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 175                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 176                         if (mh)
 177                         {
 178                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 179                                 mh->ChangeCount(-1);
 180                         }
 181                 }
 182         }
 183 }
 184
 185 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 186 {
 187         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 188         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 189         reset_due = ServerInstance->Time();
 190         age = ServerInstance->Time();
 191         Penalty = 0;
 192         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 193         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 194         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 195         fd = -1;
 196         recvq.clear();
 197         sendq.clear();
 198         WriteError.clear();
 199         res_forward = res_reverse = NULL;
 200         Visibility = NULL;
 201         ip = NULL;
 202         MyClass = NULL;
 203         io = NULL;
 204         AllowedUserModes = NULL;
 205         AllowedChanModes = NULL;
 206         AllowedOperCommands = NULL;
 207         chans.clear();
 208         invites.clear();
 209         memset(modes,0,sizeof(modes));
 210         memset(snomasks,0,sizeof(snomasks));
 211         /* Invalidate cache */
 212         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 213
 214         if (uid.empty())
 215                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 216         else
 217                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 218
 219         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 220
 221         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 222         if (finduuid == Instance->Users->uuidlist->end())
 223                 (*Instance->Users->uuidlist)[uuid] = this;
 224         else
 225                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 226 }
 227
 228 User::~User()
 229 {
 230         /* NULL for remote users :) */
 231         if (this->MyClass)
 232         {
 233                 this->MyClass->RefCount--;
 234                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %lu", this->MyClass->RefCount);
 235         }
 236         if (this->AllowedOperCommands)
 237         {
 238                 delete AllowedOperCommands;
 239                 AllowedOperCommands = NULL;
 240         }
 241
 242         if (this->AllowedUserModes)
 243         {
 244                 delete[] AllowedUserModes;
 245                 AllowedUserModes = NULL;
 246         }
 247
 248         if (this->AllowedChanModes)
 249         {
 250                 delete[] AllowedChanModes;
 251                 AllowedChanModes = NULL;
 252         }
 253
 254         this->InvalidateCache();
 255         this->DecrementModes();
 256
 257         if (ip)
 258         {
 259                 ServerInstance->Users->RemoveCloneCounts(this);
 260
 261                 if (this->GetProtocolFamily() == AF_INET)
 262                 {
 263                         delete (sockaddr_in*)ip;
 264                 }
 265 #ifdef SUPPORT_IP6LINKS
 266                 else
 267                 {
 268                         delete (sockaddr_in6*)ip;
 269                 }
 270 #endif
 271         }
 272
 273         ServerInstance->Users->uuidlist->erase(uuid);
 274 }
 275
 276 char* User::MakeHost()
 277 {
 278         if (this->cached_makehost)
 279                 return this->cached_makehost;
 280
 281         char nhost[MAXBUF];
 282         /* This is much faster than snprintf */
 283         char* t = nhost;
 284         for(char* n = ident; *n; n++)
 285                 *t++ = *n;
 286         *t++ = '@';
 287         for(char* n = host; *n; n++)
 288                 *t++ = *n;
 289         *t = 0;
 290
 291         this->cached_makehost = strdup(nhost);
 292
 293         return this->cached_makehost;
 294 }
 295
 296 char* User::MakeHostIP()
 297 {
 298         if (this->cached_hostip)
 299                 return this->cached_hostip;
 300
 301         char ihost[MAXBUF];
 302         /* This is much faster than snprintf */
 303         char* t = ihost;
 304         for(char* n = ident; *n; n++)
 305                 *t++ = *n;
 306         *t++ = '@';
 307         for(const char* n = this->GetIPString(); *n; n++)
 308                 *t++ = *n;
 309         *t = 0;
 310
 311         this->cached_hostip = strdup(ihost);
 312
 313         return this->cached_hostip;
 314 }
 315
 316 void User::CloseSocket()
 317 {
 318         if (this->fd > -1)
 319         {
 320                 ServerInstance->SE->Shutdown(this, 2);
 321                 ServerInstance->SE->Close(this);
 322         }
 323 }
 324
 325 char* User::GetFullHost()
 326 {
 327         if (this->cached_fullhost)
 328                 return this->cached_fullhost;
 329
 330         char result[MAXBUF];
 331         char* t = result;
 332         for(char* n = nick; *n; n++)
 333                 *t++ = *n;
 334         *t++ = '!';
 335         for(char* n = ident; *n; n++)
 336                 *t++ = *n;
 337         *t++ = '@';
 338         for(char* n = dhost; *n; n++)
 339                 *t++ = *n;
 340         *t = 0;
 341
 342         this->cached_fullhost = strdup(result);
 343
 344         return this->cached_fullhost;
 345 }
 346
 347 char* User::MakeWildHost()
 348 {
 349         static char nresult[MAXBUF];
 350         char* t = nresult;
 351         *t++ = '*';     *t++ = '!';
 352         *t++ = '*';     *t++ = '@';
 353         for(char* n = dhost; *n; n++)
 354                 *t++ = *n;
 355         *t = 0;
 356         return nresult;
 357 }
 358
 359 int User::ReadData(void* buffer, size_t size)
 360 {
 361         if (IS_LOCAL(this))
 362         {
 363 #ifndef WIN32
 364                 return read(this->fd, buffer, size);
 365 #else
 366                 return recv(this->fd, (char*)buffer, size, 0);
 367 #endif
 368         }
 369         else
 370                 return 0;
 371 }
 372
 373
 374 char* User::GetFullRealHost()
 375 {
 376         if (this->cached_fullrealhost)
 377                 return this->cached_fullrealhost;
 378
 379         char fresult[MAXBUF];
 380         char* t = fresult;
 381         for(char* n = nick; *n; n++)
 382                 *t++ = *n;
 383         *t++ = '!';
 384         for(char* n = ident; *n; n++)
 385                 *t++ = *n;
 386         *t++ = '@';
 387         for(char* n = host; *n; n++)
 388                 *t++ = *n;
 389         *t = 0;
 390
 391         this->cached_fullrealhost = strdup(fresult);
 392
 393         return this->cached_fullrealhost;
 394 }
 395
 396 bool User::IsInvited(const irc::string &channel)
 397 {
 398         time_t now = time(NULL);
 399         InvitedList::iterator safei;
 400         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 401         {
 402                 if (channel == i->first)
 403                 {
 404                         if (i->second != 0 && now > i->second)
 405                         {
 406                                 /* Expired invite, remove it. */
 407                                 safei = i;
 408                                 --i;
 409                                 invites.erase(safei);
 410                                 continue;
 411                         }
 412                         return true;
 413                 }
 414         }
 415         return false;
 416 }
 417
 418 InvitedList* User::GetInviteList()
 419 {
 420         time_t now = time(NULL);
 421         /* Weed out expired invites here. */
 422         InvitedList::iterator safei;
 423         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 424         {
 425                 if (i->second != 0 && now > i->second)
 426                 {
 427                         /* Expired invite, remove it. */
 428                         safei = i;
 429                         --i;
 430                         invites.erase(safei);
 431                 }
 432         }
 433         return &invites;
 434 }
 435
 436 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 437 {
 438         time_t now = time(NULL);
 439         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 440         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 441         {
 442                 if (channel == i->first)
 443                 {
 444                         if (i->second != 0 && invtimeout > i->second)
 445                         {
 446                                 i->second = invtimeout;
 447                         }
 448                 }
 449         }
 450         invites.push_back(std::make_pair(channel, invtimeout));
 451 }
 452
 453 void User::RemoveInvite(const irc::string &channel)
 454 {
 455         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 456         {
 457                 if (channel == i->first)
 458                 {
 459                         invites.erase(i);
 460                         return;
 461                 }
 462         }
 463 }
 464
 465 bool User::HasModePermission(unsigned char mode, ModeType type)
 466 {
 467         if (!IS_LOCAL(this))
 468                 return true;
 469
 470         if (!IS_OPER(this))
 471                 return false;
 472
 473         if (!AllowedUserModes || !AllowedChanModes)
 474                 return false;
 475
 476         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 477
 478 }
 479
 480 bool User::HasPermission(const std::string &command)
 481 {
 482         /*
 483          * users on remote servers can completely bypass all permissions based checks.
 484          * This prevents desyncs when one server has different type/class tags to another.
 485          * That having been said, this does open things up to the possibility of source changes
 486          * allowing remote kills, etc - but if they have access to the src, they most likely have
 487          * access to the conf - so it's an end to a means either way.
 488          */
 489         if (!IS_LOCAL(this))
 490                 return true;
 491
 492         // are they even an oper at all?
 493         if (!IS_OPER(this))
 494         {
 495                 return false;
 496         }
 497
 498         if (!AllowedOperCommands)
 499                 return false;
 500
 501         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 502                 return true;
 503         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 504                 return true;
 505
 506         return false;
 507 }
 508
 509 /** NOTE: We cannot pass a const reference to this method.
 510  * The string is changed by the workings of the method,
 511  * so that if we pass const ref, we end up copying it to
 512  * something we can change anyway. Makes sense to just let
 513  * the compiler do that copy for us.
 514  */
 515 bool User::AddBuffer(std::string a)
 516 {
 517         try
 518         {
 519                 std::string::size_type i = a.rfind('\r');
 520
 521                 while (i != std::string::npos)
 522                 {
 523                         a.erase(i, 1);
 524                         i = a.rfind('\r');
 525                 }
 526
 527                 if (a.length())
 528                         recvq.append(a);
 529
 530                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 531                 {
 532                         this->SetWriteError("RecvQ exceeded");
 533                         ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %lu exceeds connect class maximum of %lu",this->nick,(unsigned long int)recvq.length(),this->MyClass->GetRecvqMax());
 534                         return false;
 535                 }
 536
 537                 return true;
 538         }
 539
 540         catch (...)
 541         {
 542                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::AddBuffer()");
 543                 return false;
 544         }
 545 }
 546
 547 bool User::BufferIsReady()
 548 {
 549         return (recvq.find('\n') != std::string::npos);
 550 }
 551
 552 void User::ClearBuffer()
 553 {
 554         recvq.clear();
 555 }
 556
 557 std::string User::GetBuffer()
 558 {
 559         try
 560         {
 561                 if (recvq.empty())
 562                         return "";
 563
 564                 /* Strip any leading \r or \n off the string.
 565                  * Usually there are only one or two of these,
 566                  * so its is computationally cheap to do.
 567                  */
 568                 std::string::iterator t = recvq.begin();
 569                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 570                 {
 571                         recvq.erase(t);
 572                         t = recvq.begin();
 573                 }
 574
 575                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 576                 {
 577                         /* Find the first complete line, return it as the
 578                          * result, and leave the recvq as whats left
 579                          */
 580                         if (*x == '\n')
 581                         {
 582                                 std::string ret = std::string(recvq.begin(), x);
 583                                 recvq.erase(recvq.begin(), x + 1);
 584                                 return ret;
 585                         }
 586                 }
 587                 return "";
 588         }
 589
 590         catch (...)
 591         {
 592                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 593                 return "";
 594         }
 595 }
 596
 597 void User::AddWriteBuf(const std::string &data)
 598 {
 599         if (*this->GetWriteError())
 600                 return;
 601
 602         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 603         {
 604                 /*
 605                  * Fix by brain - Set the error text BEFORE calling, because
 606                  * if we dont it'll recursively  call here over and over again trying
 607                  * to repeatedly add the text to the sendq!
 608                  */
 609                 this->SetWriteError("SendQ exceeded");
 610                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %lu exceeds connect class maximum of %lu",this->nick,(unsigned long int)sendq.length() + data.length(),this->MyClass->GetSendqMax());
 611                 return;
 612         }
 613
 614         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 615                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 616         else
 617                 sendq.append(data);
 618 }
 619
 620 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 621 void User::FlushWriteBuf()
 622 {
 623         try
 624         {
 625                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 626                 {
 627                         sendq.clear();
 628                 }
 629                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 630                 {
 631                         int old_sendq_length = sendq.length();
 632                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 633
 634                         if (n_sent == -1)
 635                         {
 636                                 if (errno == EAGAIN)
 637                                 {
 638                                         /* The socket buffer is full. This isnt fatal,
 639                                          * try again later.
 640                                          */
 641                                         this->ServerInstance->SE->WantWrite(this);
 642                                 }
 643                                 else
 644                                 {
 645                                         /* Fatal error, set write error and bail
 646                                          */
 647                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 648                                         return;
 649                                 }
 650                         }
 651                         else
 652                         {
 653                                 /* advance the queue */
 654                                 if (n_sent)
 655                                         this->sendq = this->sendq.substr(n_sent);
 656                                 /* update the user's stats counters */
 657                                 this->bytes_out += n_sent;
 658                                 this->cmds_out++;
 659                                 if (n_sent != old_sendq_length)
 660                                         this->ServerInstance->SE->WantWrite(this);
 661                         }
 662                 }
 663         }
 664
 665         catch (...)
 666         {
 667                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 668         }
 669
 670         if (this->sendq.empty())
 671         {
 672                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 673         }
 674 }
 675
 676 void User::SetWriteError(const std::string &error)
 677 {
 678         // don't try to set the error twice, its already set take the first string.
 679         if (this->WriteError.empty())
 680                 this->WriteError = error;
 681 }
 682
 683 const char* User::GetWriteError()
 684 {
 685         return this->WriteError.c_str();
 686 }
 687
 688 void User::Oper(const std::string &opertype, const std::string &opername)
 689 {
 690         char* mycmd;
 691         char* savept;
 692         char* savept2;
 693
 694         try
 695         {
 696                 this->modes[UM_OPERATOR] = 1;
 697                 this->WriteServ("MODE %s :+o", this->nick);
 698                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 699                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 700                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 701                 ServerInstance->Users->all_opers.push_back(this);
 702
 703                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 704                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 705                 {
 706
 707                         if (AllowedOperCommands)
 708                                 AllowedOperCommands->clear();
 709                         else
 710                                 AllowedOperCommands = new std::map<std::string, bool>;
 711
 712                         if (!AllowedChanModes)
 713                                 AllowedChanModes = new bool[64];
 714
 715                         if (!AllowedUserModes)
 716                                 AllowedUserModes = new bool[64];
 717
 718                         memset(AllowedUserModes, 0, 64);
 719                         memset(AllowedChanModes, 0, 64);
 720
 721                         char* Classes = strdup(iter_opertype->second);
 722                         char* myclass = strtok_r(Classes," ",&savept);
 723                         while (myclass)
 724                         {
 725                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 726                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 727                                 {
 728                                         char* CommandList = strdup(iter_operclass->second.commandlist);
 729                                         mycmd = strtok_r(CommandList," ",&savept2);
 730                                         while (mycmd)
 731                                         {
 732                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 733                                                 mycmd = strtok_r(NULL," ",&savept2);
 734                                         }
 735                                         free(CommandList);
 736                                         this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 737                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 738                                         {
 739                                                 if (*c == '*')
 740                                                 {
 741                                                         memset(this->AllowedUserModes, (int)(true), 64);
 742                                                 }
 743                                                 else
 744                                                 {
 745                                                         this->AllowedUserModes[*c - 'A'] = true;
 746                                                 }
 747                                         }
 748                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 749                                         {
 750                                                 if (*c == '*')
 751                                                 {
 752                                                         memset(this->AllowedChanModes, (int)(true), 64);
 753                                                 }
 754                                                 else
 755                                                 {
 756                                                         this->AllowedChanModes[*c - 'A'] = true;
 757                                                 }
 758                                         }
 759                                 }
 760                                 myclass = strtok_r(NULL," ",&savept);
 761                         }
 762                         free(Classes);
 763                 }
 764
 765                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 766         }
 767
 768         catch (...)
 769         {
 770                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 771         }
 772 }
 773
 774 void User::UnOper()
 775 {
 776         if (IS_OPER(this))
 777         {
 778                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 779                 std::string moderemove("-");
 780
 781                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 782                 {
 783                         if (letter != 'o')
 784                         {
 785                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 786                                 if (mh && mh->NeedsOper())
 787                                         moderemove += letter;
 788                         }
 789                 }
 790
 791                 const char* parameters[] = { this->nick, moderemove.c_str() };
 792                 ServerInstance->Parser->CallHandler("MODE", parameters, 2, this);
 793
 794                 /* unset their oper type (what IS_OPER checks), and remove +o */
 795                 *this->oper = 0;
 796                 this->modes[UM_OPERATOR] = 0;
 797
 798                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 799                 ServerInstance->Users->all_opers.remove(this);
 800
 801                 if (AllowedOperCommands)
 802                 {
 803                         delete AllowedOperCommands;
 804                         AllowedOperCommands = NULL;
 805                 }
 806                 if (AllowedUserModes)
 807                 {
 808                         delete[] AllowedUserModes;
 809                         AllowedUserModes = NULL;
 810                 }
 811                 if (AllowedChanModes)
 812                 {
 813                         delete[] AllowedChanModes;
 814                         AllowedChanModes = NULL;
 815                 }
 816
 817         }
 818 }
 819
 820 /* adds or updates an entry in the whowas list */
 821 void User::AddToWhoWas()
 822 {
 823         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 824         if (whowas_command)
 825         {
 826                 std::deque<classbase*> params;
 827                 params.push_back(this);
 828                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 829         }
 830 }
 831
 832 /*
 833  * Check class restrictions
 834  */
 835 void User::CheckClass()
 836 {
 837         ConnectClass* a = this->MyClass;
 838
 839         if ((!a) || (a->GetType() == CC_DENY))
 840         {
 841                 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
 842                 return;
 843         }
 844         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 845         {
 846                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 847                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 848                 return;
 849         }
 850         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 851         {
 852                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 853                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 854                 return;
 855         }
 856
 857         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 858         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 859         this->MaxChans = a->GetMaxChans();
 860 }
 861
 862 void User::FullConnect()
 863 {
 864         ServerInstance->stats->statsConnects++;
 865         this->idle_lastmsg = ServerInstance->Time();
 866
 867         /*
 868          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 869          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 870          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 871          * Don't remove this! -- w00t
 872          */
 873         this->SetClass();
 874
 875         /* Check the password, if one is required by the user's connect class.
 876          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 877          */
 878         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 879         {
 880                 ServerInstance->Users->QuitUser(this, "Invalid password");
 881                 return;
 882         }
 883
 884         if (!this->exempt)
 885         {
 886                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 887
 888                 if (r)
 889                 {
 890                         r->Apply(this);
 891                         return;
 892                 }
 893
 894                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 895
 896                 if (n)
 897                 {
 898                         n->Apply(this);
 899                         return;
 900                 }
 901         }
 902
 903         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 904         this->WriteNumeric(001, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 905         this->WriteNumeric(002, "%s :Your host is %s, running version InspIRCd-1.2",this->nick,ServerInstance->Config->ServerName);
 906         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 907         this->WriteNumeric(004, "%s %s InspIRCd-1.2 %s %s %s", this->nick, ServerInstance->Config->ServerName, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 908
 909         ServerInstance->Config->Send005(this);
 910         this->WriteNumeric(42, "%s %s :your unique ID", this->nick, this->uuid);
 911
 912
 913         this->ShowMOTD();
 914
 915         /* Now registered */
 916         if (ServerInstance->Users->unregistered_count)
 917                 ServerInstance->Users->unregistered_count--;
 918
 919         /* Trigger LUSERS output, give modules a chance too */
 920         int MOD_RESULT = 0;
 921         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 922         if (!MOD_RESULT)
 923                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 924
 925         /*
 926          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 927          * for a user that doesn't exist yet.
 928          */
 929         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 930
 931         this->registered = REG_ALL;
 932
 933         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 934
 935         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);
 936         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 937         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 938 }
 939
 940 /** User::UpdateNick()
 941  * re-allocates a nick in the user_hash after they change nicknames,
 942  * returns a pointer to the new user as it may have moved
 943  */
 944 User* User::UpdateNickHash(const char* New)
 945 {
 946         //user_hash::iterator newnick;
 947         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 948
 949         if (!strcasecmp(this->nick,New))
 950                 return oldnick->second;
 951
 952         if (oldnick == ServerInstance->Users->clientlist->end())
 953                 return NULL; /* doesnt exist */
 954
 955         User* olduser = oldnick->second;
 956         (*(ServerInstance->Users->clientlist))[New] = olduser;
 957         ServerInstance->Users->clientlist->erase(oldnick);
 958         return olduser;
 959 }
 960
 961 void User::InvalidateCache()
 962 {
 963         /* Invalidate cache */
 964         if (cached_fullhost)
 965                 free(cached_fullhost);
 966         if (cached_hostip)
 967                 free(cached_hostip);
 968         if (cached_makehost)
 969                 free(cached_makehost);
 970         if (cached_fullrealhost)
 971                 free(cached_fullrealhost);
 972         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 973 }
 974
 975 bool User::ForceNickChange(const char* newnick)
 976 {
 977         int MOD_RESULT = 0;
 978
 979         this->InvalidateCache();
 980
 981         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 982
 983         if (MOD_RESULT)
 984         {
 985                 ServerInstance->stats->statsCollisions++;
 986                 return false;
 987         }
 988
 989         std::deque<classbase*> dummy;
 990         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 991         if (nickhandler) // wtfbbq, when would this not be here
 992         {
 993                 nickhandler->HandleInternal(1, dummy);
 994                 bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
 995                 nickhandler->HandleInternal(0, dummy);
 996                 return result;
 997         }
 998
 999         // Unreachable, we hope
1000         return false;
1001 }
1002
1003 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1004 {
1005         this->cachedip = "";
1006
1007         switch (protocol_family)
1008         {
1009 #ifdef SUPPORT_IP6LINKS
1010                 case AF_INET6:
1011                 {
1012                         sockaddr_in6* sin = new sockaddr_in6;
1013                         sin->sin6_family = AF_INET6;
1014                         sin->sin6_port = port;
1015                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1016                         this->ip = (sockaddr*)sin;
1017                 }
1018                 break;
1019 #endif
1020                 case AF_INET:
1021                 {
1022                         sockaddr_in* sin = new sockaddr_in;
1023                         sin->sin_family = AF_INET;
1024                         sin->sin_port = port;
1025                         inet_pton(AF_INET, sip, &sin->sin_addr);
1026                         this->ip = (sockaddr*)sin;
1027                 }
1028                 break;
1029                 default:
1030                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1031                 break;
1032         }
1033 }
1034
1035 int User::GetPort()
1036 {
1037         if (this->ip == NULL)
1038                 return 0;
1039
1040         switch (this->GetProtocolFamily())
1041         {
1042 #ifdef SUPPORT_IP6LINKS
1043                 case AF_INET6:
1044                 {
1045                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1046                         return sin->sin6_port;
1047                 }
1048                 break;
1049 #endif
1050                 case AF_INET:
1051                 {
1052                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1053                         return sin->sin_port;
1054                 }
1055                 break;
1056                 default:
1057                 break;
1058         }
1059         return 0;
1060 }
1061
1062 int User::GetProtocolFamily()
1063 {
1064         if (this->ip == NULL)
1065                 return 0;
1066
1067         sockaddr_in* sin = (sockaddr_in*)this->ip;
1068         return sin->sin_family;
1069 }
1070
1071 /*
1072  * XXX the duplication here is horrid..
1073  * do we really need two methods doing essentially the same thing?
1074  */
1075 const char* User::GetIPString(bool translate4in6)
1076 {
1077         static char buf[1024];
1078
1079         if (this->ip == NULL)
1080                 return "";
1081
1082         if (!this->cachedip.empty())
1083                 return this->cachedip.c_str();
1084
1085         switch (this->GetProtocolFamily())
1086         {
1087 #ifdef SUPPORT_IP6LINKS
1088                 case AF_INET6:
1089                 {
1090                         static char temp[1024];
1091
1092                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1093                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1094                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1095                         if (*buf == ':')
1096                         {
1097                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1098                                 *temp = '0';
1099                                 if (translate4in6 && !strncmp(temp, "0::ffff:", 8))
1100                                 {
1101                                         this->cachedip = temp + 8;
1102                                         return temp + 8;
1103                                 }
1104
1105                                 this->cachedip = temp;
1106                                 return temp;
1107                         }
1108
1109                         this->cachedip = buf;
1110                         return buf;
1111                 }
1112                 break;
1113 #endif
1114                 case AF_INET:
1115                 {
1116                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1117                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1118                         this->cachedip = buf;
1119                         return buf;
1120                 }
1121                 break;
1122                 default:
1123                 break;
1124         }
1125
1126         // Unreachable, probably
1127         return "";
1128 }
1129
1130 /** NOTE: We cannot pass a const reference to this method.
1131  * The string is changed by the workings of the method,
1132  * so that if we pass const ref, we end up copying it to
1133  * something we can change anyway. Makes sense to just let
1134  * the compiler do that copy for us.
1135  */
1136 void User::Write(std::string text)
1137 {
1138         if (!ServerInstance->SE->BoundsCheckFd(this))
1139                 return;
1140
1141         try
1142         {
1143                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1144                 text.append("\r\n");
1145         }
1146         catch (...)
1147         {
1148                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1149                 return;
1150         }
1151
1152         if (this->io)
1153         {
1154                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1155                  * implement their own buffering mechanisms
1156                  */
1157                 try
1158                 {
1159                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1160                 }
1161                 catch (CoreException& modexcept)
1162                 {
1163                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1164                 }
1165         }
1166         else
1167         {
1168                 this->AddWriteBuf(text);
1169         }
1170         ServerInstance->stats->statsSent += text.length();
1171         this->ServerInstance->SE->WantWrite(this);
1172 }
1173
1174 /** Write()
1175  */
1176 void User::Write(const char *text, ...)
1177 {
1178         va_list argsPtr;
1179         char textbuffer[MAXBUF];
1180
1181         va_start(argsPtr, text);
1182         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1183         va_end(argsPtr);
1184
1185         this->Write(std::string(textbuffer));
1186 }
1187
1188 void User::WriteServ(const std::string& text)
1189 {
1190         char textbuffer[MAXBUF];
1191
1192         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1193         this->Write(std::string(textbuffer));
1194 }
1195
1196 /** WriteServ()
1197  *  Same as Write(), except `text' is prefixed with `:server.name '.
1198  */
1199 void User::WriteServ(const char* text, ...)
1200 {
1201         va_list argsPtr;
1202         char textbuffer[MAXBUF];
1203
1204         va_start(argsPtr, text);
1205         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1206         va_end(argsPtr);
1207
1208         this->WriteServ(std::string(textbuffer));
1209 }
1210
1211
1212 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1213 {
1214         va_list argsPtr;
1215         char textbuffer[MAXBUF];
1216
1217         va_start(argsPtr, text);
1218         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1219         va_end(argsPtr);
1220
1221         this->WriteNumeric(numeric, std::string(textbuffer));
1222 }
1223
1224 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1225 {
1226         char textbuffer[MAXBUF];
1227         int MOD_RESULT = 0;
1228
1229         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1230
1231         if (MOD_RESULT)
1232                 return;
1233
1234         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1235         this->Write(std::string(textbuffer));
1236 }
1237
1238 void User::WriteFrom(User *user, const std::string &text)
1239 {
1240         char tb[MAXBUF];
1241
1242         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1243
1244         this->Write(std::string(tb));
1245 }
1246
1247
1248 /* write text from an originating user to originating user */
1249
1250 void User::WriteFrom(User *user, const char* text, ...)
1251 {
1252         va_list argsPtr;
1253         char textbuffer[MAXBUF];
1254
1255         va_start(argsPtr, text);
1256         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1257         va_end(argsPtr);
1258
1259         this->WriteFrom(user, std::string(textbuffer));
1260 }
1261
1262
1263 /* write text to an destination user from a source user (e.g. user privmsg) */
1264
1265 void User::WriteTo(User *dest, const char *data, ...)
1266 {
1267         char textbuffer[MAXBUF];
1268         va_list argsPtr;
1269
1270         va_start(argsPtr, data);
1271         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1272         va_end(argsPtr);
1273
1274         this->WriteTo(dest, std::string(textbuffer));
1275 }
1276
1277 void User::WriteTo(User *dest, const std::string &data)
1278 {
1279         dest->WriteFrom(this, data);
1280 }
1281
1282
1283 void User::WriteCommon(const char* text, ...)
1284 {
1285         char textbuffer[MAXBUF];
1286         va_list argsPtr;
1287
1288         if (this->registered != REG_ALL)
1289                 return;
1290
1291         va_start(argsPtr, text);
1292         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1293         va_end(argsPtr);
1294
1295         this->WriteCommon(std::string(textbuffer));
1296 }
1297
1298 void User::WriteCommon(const std::string &text)
1299 {
1300         bool sent_to_at_least_one = false;
1301         char tb[MAXBUF];
1302
1303         if (this->registered != REG_ALL)
1304                 return;
1305
1306         uniq_id++;
1307
1308         if (!already_sent)
1309                 InitializeAlreadySent(ServerInstance->SE);
1310
1311         /* We dont want to be doing this n times, just once */
1312         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1313         std::string out = tb;
1314
1315         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1316         {
1317                 CUList* ulist = v->first->GetUsers();
1318                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1319                 {
1320                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1321                         {
1322                                 already_sent[i->first->fd] = uniq_id;
1323                                 i->first->Write(out);
1324                                 sent_to_at_least_one = true;
1325                         }
1326                 }
1327         }
1328
1329         /*
1330          * if the user was not in any channels, no users will receive the text. Make sure the user
1331          * receives their OWN message for WriteCommon
1332          */
1333         if (!sent_to_at_least_one)
1334         {
1335                 this->Write(std::string(tb));
1336         }
1337 }
1338
1339
1340 /* write a formatted string to all users who share at least one common
1341  * channel, NOT including the source user e.g. for use in QUIT
1342  */
1343
1344 void User::WriteCommonExcept(const char* text, ...)
1345 {
1346         char textbuffer[MAXBUF];
1347         va_list argsPtr;
1348
1349         va_start(argsPtr, text);
1350         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1351         va_end(argsPtr);
1352
1353         this->WriteCommonExcept(std::string(textbuffer));
1354 }
1355
1356 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1357 {
1358         char tb1[MAXBUF];
1359         char tb2[MAXBUF];
1360
1361         if (this->registered != REG_ALL)
1362                 return;
1363
1364         uniq_id++;
1365
1366         if (!already_sent)
1367                 InitializeAlreadySent(ServerInstance->SE);
1368
1369         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1370         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1371         std::string out1 = tb1;
1372         std::string out2 = tb2;
1373
1374         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1375         {
1376                 CUList *ulist = v->first->GetUsers();
1377                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1378                 {
1379                         if (this != i->first)
1380                         {
1381                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1382                                 {
1383                                         already_sent[i->first->fd] = uniq_id;
1384                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1385                                 }
1386                         }
1387                 }
1388         }
1389 }
1390
1391 void User::WriteCommonExcept(const std::string &text)
1392 {
1393         char tb1[MAXBUF];
1394         std::string out1;
1395
1396         if (this->registered != REG_ALL)
1397                 return;
1398
1399         uniq_id++;
1400
1401         if (!already_sent)
1402                 InitializeAlreadySent(ServerInstance->SE);
1403
1404         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1405         out1 = tb1;
1406
1407         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1408         {
1409                 CUList *ulist = v->first->GetUsers();
1410                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1411                 {
1412                         if (this != i->first)
1413                         {
1414                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1415                                 {
1416                                         already_sent[i->first->fd] = uniq_id;
1417                                         i->first->Write(out1);
1418                                 }
1419                         }
1420                 }
1421         }
1422
1423 }
1424
1425 void User::WriteWallOps(const std::string &text)
1426 {
1427         if (!IS_LOCAL(this))
1428                 return;
1429
1430         std::string wallop("WALLOPS :");
1431         wallop.append(text);
1432
1433         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1434         {
1435                 User* t = *i;
1436                 if (t->IsModeSet('w'))
1437                         this->WriteTo(t,wallop);
1438         }
1439 }
1440
1441 void User::WriteWallOps(const char* text, ...)
1442 {
1443         if (!IS_LOCAL(this))
1444                 return;
1445
1446         char textbuffer[MAXBUF];
1447         va_list argsPtr;
1448
1449         va_start(argsPtr, text);
1450         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1451         va_end(argsPtr);
1452
1453         this->WriteWallOps(std::string(textbuffer));
1454 }
1455
1456 /* return 0 or 1 depending if users u and u2 share one or more common channels
1457  * (used by QUIT, NICK etc which arent channel specific notices)
1458  *
1459  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1460  * the first users channels then the second users channels within the outer loop,
1461  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1462  * all possible iterations). However this new function instead checks against the
1463  * channel's userlist in the inner loop which is a std::map<User*,User*>
1464  * and saves us time as we already know what pointer value we are after.
1465  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1466  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1467  */
1468 bool User::SharesChannelWith(User *other)
1469 {
1470         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1471                 return false;
1472
1473         /* Outer loop */
1474         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1475         {
1476                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1477                  * by replacing it with a map::find which *should* be more efficient
1478                  */
1479                 if (i->first->HasUser(other))
1480                         return true;
1481         }
1482         return false;
1483 }
1484
1485 bool User::ChangeName(const char* gecos)
1486 {
1487         if (!strcmp(gecos, this->fullname))
1488                 return true;
1489
1490         if (IS_LOCAL(this))
1491         {
1492                 int MOD_RESULT = 0;
1493                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1494                 if (MOD_RESULT)
1495                         return false;
1496                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1497         }
1498         strlcpy(this->fullname,gecos,MAXGECOS+1);
1499
1500         return true;
1501 }
1502
1503 bool User::ChangeDisplayedHost(const char* shost)
1504 {
1505         if (!strcmp(shost, this->dhost))
1506                 return true;
1507
1508         if (IS_LOCAL(this))
1509         {
1510                 int MOD_RESULT = 0;
1511                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1512                 if (MOD_RESULT)
1513                         return false;
1514                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1515         }
1516
1517         if (this->ServerInstance->Config->CycleHosts)
1518                 this->WriteCommonExcept("QUIT :Changing hosts");
1519
1520         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1521         strlcpy(this->dhost,shost,64);
1522
1523         this->InvalidateCache();
1524
1525         if (this->ServerInstance->Config->CycleHosts)
1526         {
1527                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1528                 {
1529                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1530                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1531                         if (n.length() > 0)
1532                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1533                 }
1534         }
1535
1536         if (IS_LOCAL(this))
1537                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick,this->dhost);
1538
1539         return true;
1540 }
1541
1542 bool User::ChangeIdent(const char* newident)
1543 {
1544         if (!strcmp(newident, this->ident))
1545                 return true;
1546
1547         if (this->ServerInstance->Config->CycleHosts)
1548                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1549
1550         strlcpy(this->ident, newident, IDENTMAX+1);
1551
1552         this->InvalidateCache();
1553
1554         if (this->ServerInstance->Config->CycleHosts)
1555         {
1556                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1557                 {
1558                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1559                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1560                         if (n.length() > 0)
1561                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1562                 }
1563         }
1564
1565         return true;
1566 }
1567
1568 void User::SendAll(const char* command, const char* text, ...)
1569 {
1570         char textbuffer[MAXBUF];
1571         char formatbuffer[MAXBUF];
1572         va_list argsPtr;
1573
1574         va_start(argsPtr, text);
1575         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1576         va_end(argsPtr);
1577
1578         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1579         std::string fmt = formatbuffer;
1580
1581         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1582         {
1583                 (*i)->Write(fmt);
1584         }
1585 }
1586
1587
1588 std::string User::ChannelList(User* source)
1589 {
1590         std::string list;
1591
1592         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1593         {
1594                 /* If the target is the same as the sender, let them see all their channels.
1595                  * If the channel is NOT private/secret OR the user shares a common channel
1596                  * If the user is an oper, and the <options:operspywhois> option is set.
1597                  */
1598                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1599                 {
1600                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1601                 }
1602         }
1603
1604         return list;
1605 }
1606
1607 void User::SplitChanList(User* dest, const std::string &cl)
1608 {
1609         std::string line;
1610         std::ostringstream prefix;
1611         std::string::size_type start, pos, length;
1612
1613         prefix << this->nick << " " << dest->nick << " :";
1614         line = prefix.str();
1615         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1616
1617         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1618         {
1619                 length = (pos == std::string::npos) ? cl.length() : pos;
1620
1621                 if (line.length() + namelen + length - start > 510)
1622                 {
1623                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1624                         line = prefix.str();
1625                 }
1626
1627                 if(pos == std::string::npos)
1628                 {
1629                         line.append(cl.substr(start, length - start));
1630                         break;
1631                 }
1632                 else
1633                 {
1634                         line.append(cl.substr(start, length - start + 1));
1635                 }
1636         }
1637
1638         if (line.length())
1639         {
1640                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1641         }
1642 }
1643
1644 unsigned int User::GetMaxChans()
1645 {
1646         return this->MaxChans;
1647 }
1648
1649
1650 /*
1651  * Sets a user's connection class.
1652  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1653  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1654  * then their ip will be taken as 'priority' anyway, so for example,
1655  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1656  */
1657 ConnectClass* User::SetClass(const std::string &explicit_name)
1658 {
1659         ConnectClass *found = NULL;
1660
1661         if (!IS_LOCAL(this))
1662                 return NULL;
1663
1664         if (!explicit_name.empty())
1665         {
1666                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1667                 {
1668                         ConnectClass* c = *i;
1669
1670                         if (explicit_name == c->GetName() && !c->GetDisabled())
1671                         {
1672                                 found = c;
1673                         }
1674                 }
1675         }
1676         else
1677         {
1678                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1679                 {
1680                         ConnectClass* c = *i;
1681
1682                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1683                         {
1684                                 if (c->GetPort())
1685                                 {
1686                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1687                                         {
1688                                                 found = c;
1689                                         }
1690                                         else
1691                                                 continue;
1692                                 }
1693                                 else
1694                                 {
1695                                         if (!c->GetDisabled())
1696                                                 found = c;
1697                                 }
1698                         }
1699                 }
1700         }
1701
1702         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1703         if (found)
1704         {
1705                 /* deny change if change will take class over the limit */
1706                 if (found->limit && (found->RefCount + 1 >= found->limit))
1707                 {
1708                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", found->limit);
1709                         return this->MyClass;
1710                 }
1711
1712                 /* should always be valid, but just in case .. */
1713                 if (this->MyClass)
1714                 {
1715                         if (found == this->MyClass) // no point changing this shit :P
1716                                 return this->MyClass;
1717                         this->MyClass->RefCount--;
1718                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1719                 }
1720
1721                 this->MyClass = found;
1722                 this->MyClass->RefCount++;
1723                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1724         }
1725
1726         return this->MyClass;
1727 }
1728
1729 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1730  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1731  * then their ip will be taken as 'priority' anyway, so for example,
1732  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1733  */
1734 ConnectClass* User::GetClass()
1735 {
1736         return this->MyClass;
1737 }
1738
1739 void User::PurgeEmptyChannels()
1740 {
1741         std::vector<Channel*> to_delete;
1742
1743         // firstly decrement the count on each channel
1744         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1745         {
1746                 f->first->RemoveAllPrefixes(this);
1747                 if (f->first->DelUser(this) == 0)
1748                 {
1749                         /* No users left in here, mark it for deletion */
1750                         try
1751                         {
1752                                 to_delete.push_back(f->first);
1753                         }
1754                         catch (...)
1755                         {
1756                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1757                         }
1758                 }
1759         }
1760
1761         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1762         {
1763                 Channel* thischan = *n;
1764                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1765                 if (i2 != ServerInstance->chanlist->end())
1766                 {
1767                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1768                         delete i2->second;
1769                         ServerInstance->chanlist->erase(i2);
1770                         this->chans.erase(*n);
1771                 }
1772         }
1773
1774         this->UnOper();
1775 }
1776
1777 void User::ShowMOTD()
1778 {
1779         if (!ServerInstance->Config->MOTD.size())
1780         {
1781                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick);
1782                 return;
1783         }
1784         this->WriteNumeric(375, "%s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1785
1786         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1787                 this->WriteNumeric(372, "%s :- %s",this->nick,i->c_str());
1788
1789         this->WriteNumeric(376, "%s :End of message of the day.", this->nick);
1790 }
1791
1792 void User::ShowRULES()
1793 {
1794         if (!ServerInstance->Config->RULES.size())
1795         {
1796                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick);
1797                 return;
1798         }
1799
1800         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1801
1802         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1803                 this->WriteNumeric(232, "%s :- %s",this->nick,i->c_str());
1804
1805         this->WriteNumeric(309, "%s :End of RULES command.",this->nick);
1806 }
1807
1808 void User::HandleEvent(EventType et, int errornum)
1809 {
1810         if (this->quitting) // drop everything, user is due to be quit
1811                 return;
1812
1813         /* WARNING: May delete this user! */
1814         int thisfd = this->GetFd();
1815
1816         try
1817         {
1818                 switch (et)
1819                 {
1820                         case EVENT_READ:
1821                                 ServerInstance->ProcessUser(this);
1822                         break;
1823                         case EVENT_WRITE:
1824                                 this->FlushWriteBuf();
1825                         break;
1826                         case EVENT_ERROR:
1827                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1828                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1829                         break;
1830                 }
1831         }
1832         catch (...)
1833         {
1834                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1835         }
1836
1837         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1838         if ((ServerInstance->SE->GetRef(thisfd) == this))
1839         {
1840                 if (!WriteError.empty())
1841                 {
1842                         ServerInstance->Users->QuitUser(this, GetWriteError());
1843                 }
1844         }
1845 }
1846
1847 void User::SetOperQuit(const std::string &oquit)
1848 {
1849         operquitmsg = oquit;
1850 }
1851
1852 const char* User::GetOperQuit()
1853 {
1854         return operquitmsg.c_str();
1855 }
1856
1857 void User::IncreasePenalty(int increase)
1858 {
1859         this->Penalty += increase;
1860 }
1861
1862 void User::DecreasePenalty(int decrease)
1863 {
1864         this->Penalty -= decrease;
1865 }
1866
1867 VisData::VisData()
1868 {
1869 }
1870
1871 VisData::~VisData()
1872 {
1873 }
1874
1875 bool VisData::VisibleTo(User* user)
1876 {
1877         return true;
1878 }
1879