src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core: libIRCDusers */
  15
  16 #include "inspircd.h"
  17 #include <stdarg.h>
  18 #include "socketengine.h"
  19 #include "wildcard.h"
  20 #include "xline.h"
  21 #include "bancache.h"
  22 #include "commands/cmd_whowas.h"
  23
  24 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  25
  26 /* XXX: Used for speeding up WriteCommon operations */
  27 unsigned long uniq_id = 0;
  28
  29 std::string User::ProcessNoticeMasks(const char *sm)
  30 {
  31         bool adding = true, oldadding = false;
  32         const char *c = sm;
  33         std::string output;
  34
  35         while (c && *c)
  36         {
  37                 switch (*c)
  38                 {
  39                         case '+':
  40                                 adding = true;
  41                         break;
  42                         case '-':
  43                                 adding = false;
  44                         break;
  45                         case '*':
  46                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  47                                 {
  48                                         if (ServerInstance->SNO->IsEnabled(d))
  49                                         {
  50                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  51                                                 {
  52                                                         if ((oldadding != adding) || (!output.length()))
  53                                                                 output += (adding ? '+' : '-');
  54
  55                                                         this->SetNoticeMask(d, adding);
  56
  57                                                         output += d;
  58                                                 }
  59                                         }
  60                                         oldadding = adding;
  61                                 }
  62                         break;
  63                         default:
  64                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  65                                 {
  66                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  67                                         {
  68                                                 if ((oldadding != adding) || (!output.length()))
  69                                                         output += (adding ? '+' : '-');
  70
  71                                                 this->SetNoticeMask(*c, adding);
  72
  73                                                 output += *c;
  74                                         }
  75                                 }
  76                                 oldadding = adding;
  77                         break;
  78                 }
  79
  80                 *c++;
  81         }
  82
  83         return output;
  84 }
  85
  86 void User::StartDNSLookup()
  87 {
  88         try
  89         {
  90                 bool cached;
  91                 const char* ip = this->GetIPString();
  92
  93                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
  94                 if (!strncmp(ip, "0::ffff:", 8))
  95                         res_reverse = new UserResolver(this->ServerInstance, this, ip + 8, DNS_QUERY_PTR4, cached);
  96                 else
  97                         res_reverse = new UserResolver(this->ServerInstance, this, ip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
  98
  99                 this->ServerInstance->AddResolver(res_reverse, cached);
 100         }
 101         catch (CoreException& e)
 102         {
 103                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 104         }
 105 }
 106
 107 bool User::IsNoticeMaskSet(unsigned char sm)
 108 {
 109         return (snomasks[sm-65]);
 110 }
 111
 112 void User::SetNoticeMask(unsigned char sm, bool value)
 113 {
 114         snomasks[sm-65] = value;
 115 }
 116
 117 const char* User::FormatNoticeMasks()
 118 {
 119         static char data[MAXBUF];
 120         int offset = 0;
 121
 122         for (int n = 0; n < 64; n++)
 123         {
 124                 if (snomasks[n])
 125                         data[offset++] = n+65;
 126         }
 127
 128         data[offset] = 0;
 129         return data;
 130 }
 131
 132
 133
 134 bool User::IsModeSet(unsigned char m)
 135 {
 136         return (modes[m-65]);
 137 }
 138
 139 void User::SetMode(unsigned char m, bool value)
 140 {
 141         modes[m-65] = value;
 142 }
 143
 144 const char* User::FormatModes()
 145 {
 146         static char data[MAXBUF];
 147         int offset = 0;
 148         for (int n = 0; n < 64; n++)
 149         {
 150                 if (modes[n])
 151                         data[offset++] = n+65;
 152         }
 153         data[offset] = 0;
 154         return data;
 155 }
 156
 157 void User::DecrementModes()
 158 {
 159         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 160         for (unsigned char n = 'A'; n <= 'z'; n++)
 161         {
 162                 if (modes[n-65])
 163                 {
 164                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 165                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 166                         if (mh)
 167                         {
 168                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 169                                 mh->ChangeCount(-1);
 170                         }
 171                 }
 172         }
 173 }
 174
 175 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 176 {
 177         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 178         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 179         reset_due = ServerInstance->Time();
 180         age = ServerInstance->Time(true);
 181         Penalty = 0;
 182         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 183         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 184         OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 185         fd = -1;
 186         recvq.clear();
 187         sendq.clear();
 188         WriteError.clear();
 189         res_forward = res_reverse = NULL;
 190         Visibility = NULL;
 191         ip = NULL;
 192         MyClass = NULL;
 193         AllowedOperCommands = NULL;
 194         chans.clear();
 195         invites.clear();
 196         memset(modes,0,sizeof(modes));
 197         memset(snomasks,0,sizeof(snomasks));
 198         /* Invalidate cache */
 199         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 200
 201         if (uid.empty())
 202                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 203         else
 204                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 205
 206         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 207
 208         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 209         if (finduuid == Instance->Users->uuidlist->end())
 210                 (*Instance->Users->uuidlist)[uuid] = this;
 211         else
 212                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 213 }
 214
 215 User::~User()
 216 {
 217         /* NULL for remote users :) */
 218         if (this->MyClass)
 219         {
 220                 this->MyClass->RefCount--;
 221                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %u", this->MyClass->RefCount);
 222         }
 223         if (this->AllowedOperCommands)
 224         {
 225                 delete AllowedOperCommands;
 226                 AllowedOperCommands = NULL;
 227         }
 228
 229         this->InvalidateCache();
 230         this->DecrementModes();
 231
 232         if (ip)
 233         {
 234                 ServerInstance->Users->RemoveCloneCounts(this);
 235
 236                 if (this->GetProtocolFamily() == AF_INET)
 237                 {
 238                         delete (sockaddr_in*)ip;
 239                 }
 240 #ifdef SUPPORT_IP6LINKS
 241                 else
 242                 {
 243                         delete (sockaddr_in6*)ip;
 244                 }
 245 #endif
 246         }
 247
 248         ServerInstance->Users->uuidlist->erase(uuid);
 249 }
 250
 251 char* User::MakeHost()
 252 {
 253         if (this->cached_makehost)
 254                 return this->cached_makehost;
 255
 256         char nhost[MAXBUF];
 257         /* This is much faster than snprintf */
 258         char* t = nhost;
 259         for(char* n = ident; *n; n++)
 260                 *t++ = *n;
 261         *t++ = '@';
 262         for(char* n = host; *n; n++)
 263                 *t++ = *n;
 264         *t = 0;
 265
 266         this->cached_makehost = strdup(nhost);
 267
 268         return this->cached_makehost;
 269 }
 270
 271 char* User::MakeHostIP()
 272 {
 273         if (this->cached_hostip)
 274                 return this->cached_hostip;
 275
 276         char ihost[MAXBUF];
 277         /* This is much faster than snprintf */
 278         char* t = ihost;
 279         for(char* n = ident; *n; n++)
 280                 *t++ = *n;
 281         *t++ = '@';
 282         for(const char* n = this->GetIPString(); *n; n++)
 283                 *t++ = *n;
 284         *t = 0;
 285
 286         this->cached_hostip = strdup(ihost);
 287
 288         return this->cached_hostip;
 289 }
 290
 291 void User::CloseSocket()
 292 {
 293         ServerInstance->SE->Shutdown(this, 2);
 294         ServerInstance->SE->Close(this);
 295 }
 296
 297 char* User::GetFullHost()
 298 {
 299         if (this->cached_fullhost)
 300                 return this->cached_fullhost;
 301
 302         char result[MAXBUF];
 303         char* t = result;
 304         for(char* n = nick; *n; n++)
 305                 *t++ = *n;
 306         *t++ = '!';
 307         for(char* n = ident; *n; n++)
 308                 *t++ = *n;
 309         *t++ = '@';
 310         for(char* n = dhost; *n; n++)
 311                 *t++ = *n;
 312         *t = 0;
 313
 314         this->cached_fullhost = strdup(result);
 315
 316         return this->cached_fullhost;
 317 }
 318
 319 char* User::MakeWildHost()
 320 {
 321         static char nresult[MAXBUF];
 322         char* t = nresult;
 323         *t++ = '*';     *t++ = '!';
 324         *t++ = '*';     *t++ = '@';
 325         for(char* n = dhost; *n; n++)
 326                 *t++ = *n;
 327         *t = 0;
 328         return nresult;
 329 }
 330
 331 int User::ReadData(void* buffer, size_t size)
 332 {
 333         if (IS_LOCAL(this))
 334         {
 335 #ifndef WIN32
 336                 return read(this->fd, buffer, size);
 337 #else
 338                 return recv(this->fd, (char*)buffer, size, 0);
 339 #endif
 340         }
 341         else
 342                 return 0;
 343 }
 344
 345
 346 char* User::GetFullRealHost()
 347 {
 348         if (this->cached_fullrealhost)
 349                 return this->cached_fullrealhost;
 350
 351         char fresult[MAXBUF];
 352         char* t = fresult;
 353         for(char* n = nick; *n; n++)
 354                 *t++ = *n;
 355         *t++ = '!';
 356         for(char* n = ident; *n; n++)
 357                 *t++ = *n;
 358         *t++ = '@';
 359         for(char* n = host; *n; n++)
 360                 *t++ = *n;
 361         *t = 0;
 362
 363         this->cached_fullrealhost = strdup(fresult);
 364
 365         return this->cached_fullrealhost;
 366 }
 367
 368 bool User::IsInvited(const irc::string &channel)
 369 {
 370         time_t now = time(NULL);
 371         InvitedList::iterator safei;
 372         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 373         {
 374                 if (channel == i->first)
 375                 {
 376                         if (i->second != 0 && now > i->second)
 377                         {
 378                                 /* Expired invite, remove it. */
 379                                 safei = i;
 380                                 --i;
 381                                 invites.erase(safei);
 382                                 continue;
 383                         }
 384                         return true;
 385                 }
 386         }
 387         return false;
 388 }
 389
 390 InvitedList* User::GetInviteList()
 391 {
 392         time_t now = time(NULL);
 393         /* Weed out expired invites here. */
 394         InvitedList::iterator safei;
 395         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 396         {
 397                 if (i->second != 0 && now > i->second)
 398                 {
 399                         /* Expired invite, remove it. */
 400                         safei = i;
 401                         --i;
 402                         invites.erase(safei);
 403                 }
 404         }
 405         return &invites;
 406 }
 407
 408 void User::InviteTo(const irc::string &channel, time_t timeout)
 409 {
 410         time_t now = time(NULL);
 411         if (timeout != 0 && now > timeout) return; /* Don't add invites that are expired from the get-go. */
 412         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 413         {
 414                 if (channel == i->first)
 415                 {
 416                         if (i->second != 0 && timeout > i->second)
 417                         {
 418                                 i->second = timeout;
 419                         }
 420                 }
 421         }
 422         invites.push_back(std::make_pair(channel, timeout));
 423 }
 424
 425 void User::RemoveInvite(const irc::string &channel)
 426 {
 427         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 428         {
 429                 if (channel == i->first)
 430                 {
 431                         invites.erase(i);
 432                         return;
 433                 }
 434         }
 435 }
 436
 437 bool User::HasPermission(const std::string &command)
 438 {
 439         /*
 440          * users on remote servers can completely bypass all permissions based checks.
 441          * This prevents desyncs when one server has different type/class tags to another.
 442          * That having been said, this does open things up to the possibility of source changes
 443          * allowing remote kills, etc - but if they have access to the src, they most likely have
 444          * access to the conf - so it's an end to a means either way.
 445          */
 446         if (!IS_LOCAL(this))
 447                 return true;
 448
 449         // are they even an oper at all?
 450         if (!IS_OPER(this))
 451         {
 452                 return false;
 453         }
 454
 455         if (!AllowedOperCommands)
 456                 return false;
 457
 458         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 459                 return true;
 460         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 461                 return true;
 462
 463         return false;
 464 }
 465
 466 /** NOTE: We cannot pass a const reference to this method.
 467  * The string is changed by the workings of the method,
 468  * so that if we pass const ref, we end up copying it to
 469  * something we can change anyway. Makes sense to just let
 470  * the compiler do that copy for us.
 471  */
 472 bool User::AddBuffer(std::string a)
 473 {
 474         try
 475         {
 476                 std::string::size_type i = a.rfind('\r');
 477
 478                 while (i != std::string::npos)
 479                 {
 480                         a.erase(i, 1);
 481                         i = a.rfind('\r');
 482                 }
 483
 484                 if (a.length())
 485                         recvq.append(a);
 486
 487                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 488                 {
 489                         this->SetWriteError("RecvQ exceeded");
 490                         ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->MyClass->GetRecvqMax());
 491                         return false;
 492                 }
 493
 494                 return true;
 495         }
 496
 497         catch (...)
 498         {
 499                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::AddBuffer()");
 500                 return false;
 501         }
 502 }
 503
 504 bool User::BufferIsReady()
 505 {
 506         return (recvq.find('\n') != std::string::npos);
 507 }
 508
 509 void User::ClearBuffer()
 510 {
 511         recvq.clear();
 512 }
 513
 514 std::string User::GetBuffer()
 515 {
 516         try
 517         {
 518                 if (recvq.empty())
 519                         return "";
 520
 521                 /* Strip any leading \r or \n off the string.
 522                  * Usually there are only one or two of these,
 523                  * so its is computationally cheap to do.
 524                  */
 525                 std::string::iterator t = recvq.begin();
 526                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 527                 {
 528                         recvq.erase(t);
 529                         t = recvq.begin();
 530                 }
 531
 532                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 533                 {
 534                         /* Find the first complete line, return it as the
 535                          * result, and leave the recvq as whats left
 536                          */
 537                         if (*x == '\n')
 538                         {
 539                                 std::string ret = std::string(recvq.begin(), x);
 540                                 recvq.erase(recvq.begin(), x + 1);
 541                                 return ret;
 542                         }
 543                 }
 544                 return "";
 545         }
 546
 547         catch (...)
 548         {
 549                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 550                 return "";
 551         }
 552 }
 553
 554 void User::AddWriteBuf(const std::string &data)
 555 {
 556         if (*this->GetWriteError())
 557                 return;
 558
 559         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 560         {
 561                 /*
 562                  * Fix by brain - Set the error text BEFORE calling, because
 563                  * if we dont it'll recursively  call here over and over again trying
 564                  * to repeatedly add the text to the sendq!
 565                  */
 566                 this->SetWriteError("SendQ exceeded");
 567                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->MyClass->GetSendqMax());
 568                 return;
 569         }
 570
 571         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 572                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 573         else
 574                 sendq.append(data);
 575 }
 576
 577 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 578 void User::FlushWriteBuf()
 579 {
 580         try
 581         {
 582                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 583                 {
 584                         sendq.clear();
 585                 }
 586                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 587                 {
 588                         int old_sendq_length = sendq.length();
 589                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 590
 591                         if (n_sent == -1)
 592                         {
 593                                 if (errno == EAGAIN)
 594                                 {
 595                                         /* The socket buffer is full. This isnt fatal,
 596                                          * try again later.
 597                                          */
 598                                         this->ServerInstance->SE->WantWrite(this);
 599                                 }
 600                                 else
 601                                 {
 602                                         /* Fatal error, set write error and bail
 603                                          */
 604                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 605                                         return;
 606                                 }
 607                         }
 608                         else
 609                         {
 610                                 /* advance the queue */
 611                                 if (n_sent)
 612                                         this->sendq = this->sendq.substr(n_sent);
 613                                 /* update the user's stats counters */
 614                                 this->bytes_out += n_sent;
 615                                 this->cmds_out++;
 616                                 if (n_sent != old_sendq_length)
 617                                         this->ServerInstance->SE->WantWrite(this);
 618                         }
 619                 }
 620         }
 621
 622         catch (...)
 623         {
 624                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 625         }
 626
 627         if (this->sendq.empty())
 628         {
 629                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 630         }
 631 }
 632
 633 void User::SetWriteError(const std::string &error)
 634 {
 635         // don't try to set the error twice, its already set take the first string.
 636         if (this->WriteError.empty())
 637                 this->WriteError = error;
 638 }
 639
 640 const char* User::GetWriteError()
 641 {
 642         return this->WriteError.c_str();
 643 }
 644
 645 void User::Oper(const std::string &opertype, const std::string &opername)
 646 {
 647         char* mycmd;
 648         char* savept;
 649         char* savept2;
 650
 651         try
 652         {
 653                 this->modes[UM_OPERATOR] = 1;
 654                 this->WriteServ("MODE %s :+o", this->nick);
 655                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 656                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 657                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 658                 ServerInstance->Users->all_opers.push_back(this);
 659
 660                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 661                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 662                 {
 663
 664                         if (AllowedOperCommands)
 665                                 AllowedOperCommands->clear();
 666                         else
 667                                 AllowedOperCommands = new std::map<std::string, bool>;
 668
 669                         char* Classes = strdup(iter_opertype->second);
 670                         char* myclass = strtok_r(Classes," ",&savept);
 671                         while (myclass)
 672                         {
 673                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 674                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 675                                 {
 676                                         char* CommandList = strdup(iter_operclass->second);
 677                                         mycmd = strtok_r(CommandList," ",&savept2);
 678                                         while (mycmd)
 679                                         {
 680                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 681                                                 mycmd = strtok_r(NULL," ",&savept2);
 682                                         }
 683                                         free(CommandList);
 684                                 }
 685                                 myclass = strtok_r(NULL," ",&savept);
 686                         }
 687                         free(Classes);
 688                 }
 689
 690                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 691         }
 692
 693         catch (...)
 694         {
 695                 ServerInstance->Log(DEBUG,"Exception in User::Oper()");
 696         }
 697 }
 698
 699 void User::UnOper()
 700 {
 701         if (IS_OPER(this))
 702         {
 703                 // unset their oper type (what IS_OPER checks), and remove +o
 704                 *this->oper = 0;
 705                 this->modes[UM_OPERATOR] = 0;
 706
 707                 // remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404
 708                 ServerInstance->Users->all_opers.remove(this);
 709
 710                 if (AllowedOperCommands)
 711                 {
 712                         delete AllowedOperCommands;
 713                         AllowedOperCommands = NULL;
 714                 }
 715         }
 716 }
 717
 718 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 719 {
 720         Instance->Logs->Log("USERS", DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str());
 721         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str());
 722         user->quietquit = false;
 723         user->quitmsg = quitreason;
 724         user->operquitmsg = operreason;
 725         Instance->GlobalCulls.AddItem(user);
 726 }
 727
 728 /* adds or updates an entry in the whowas list */
 729 void User::AddToWhoWas()
 730 {
 731         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 732         if (whowas_command)
 733         {
 734                 std::deque<classbase*> params;
 735                 params.push_back(this);
 736                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 737         }
 738 }
 739
 740 /*
 741  * Check class restrictions
 742  */
 743 void User::CheckClass()
 744 {
 745         ConnectClass* a = this->MyClass;
 746
 747         if ((!a) || (a->GetType() == CC_DENY))
 748         {
 749                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 750                 return;
 751         }
 752         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 753         {
 754                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 755                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 756                 return;
 757         }
 758         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 759         {
 760                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 761                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 762                 return;
 763         }
 764
 765         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 766         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 767         this->MaxChans = a->GetMaxChans();
 768 }
 769
 770 void User::FullConnect()
 771 {
 772         ServerInstance->stats->statsConnects++;
 773         this->idle_lastmsg = ServerInstance->Time();
 774
 775         /*
 776          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 777          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 778          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 779          * Don't remove this! -- w00t
 780          */
 781         this->SetClass();
 782
 783         /* Check the password, if one is required by the user's connect class.
 784          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 785          */
 786         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 787         {
 788                 User::QuitUser(ServerInstance, this, "Invalid password");
 789                 return;
 790         }
 791
 792         if (!this->exempt)
 793         {
 794                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 795
 796                 if (r)
 797                 {
 798                         r->Apply(this);
 799                         return;
 800                 }
 801
 802                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 803
 804                 if (n)
 805                 {
 806                         n->Apply(this);
 807                         return;
 808                 }
 809         }
 810
 811         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 812         this->WriteServ("001 %s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 813         this->WriteServ("002 %s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 814         this->WriteServ("003 %s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 815         this->WriteServ("004 %s %s %s %s %s %s", this->nick, ServerInstance->Config->ServerName, VERSION, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 816
 817         ServerInstance->Config->Send005(this);
 818
 819         this->WriteServ("042 %s %s :your unique ID", this->nick, this->uuid);
 820
 821
 822         this->ShowMOTD();
 823
 824         /* Now registered */
 825         if (ServerInstance->Users->unregistered_count)
 826                 ServerInstance->Users->unregistered_count--;
 827
 828         /* Trigger LUSERS output, give modules a chance too */
 829         int MOD_RESULT = 0;
 830         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 831         if (!MOD_RESULT)
 832                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 833
 834         /*
 835          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 836          * for a user that doesn't exist yet.
 837          */
 838         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 839
 840         this->registered = REG_ALL;
 841
 842         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 843
 844         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);
 845         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 846         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 847 }
 848
 849 /** User::UpdateNick()
 850  * re-allocates a nick in the user_hash after they change nicknames,
 851  * returns a pointer to the new user as it may have moved
 852  */
 853 User* User::UpdateNickHash(const char* New)
 854 {
 855         //user_hash::iterator newnick;
 856         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 857
 858         if (!strcasecmp(this->nick,New))
 859                 return oldnick->second;
 860
 861         if (oldnick == ServerInstance->Users->clientlist->end())
 862                 return NULL; /* doesnt exist */
 863
 864         User* olduser = oldnick->second;
 865         (*(ServerInstance->Users->clientlist))[New] = olduser;
 866         ServerInstance->Users->clientlist->erase(oldnick);
 867         return olduser;
 868 }
 869
 870 void User::InvalidateCache()
 871 {
 872         /* Invalidate cache */
 873         if (cached_fullhost)
 874                 free(cached_fullhost);
 875         if (cached_hostip)
 876                 free(cached_hostip);
 877         if (cached_makehost)
 878                 free(cached_makehost);
 879         if (cached_fullrealhost)
 880                 free(cached_fullrealhost);
 881         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 882 }
 883
 884 bool User::ForceNickChange(const char* newnick)
 885 {
 886         /*
 887          * XXX this makes no sense..
 888          * why do we do nothing for change on users not REG_ALL?
 889          * why do we trigger events twice for everyone previously (and just them now)
 890          * i think the first if () needs removing totally, or? -- w00t
 891          */
 892         if (this->registered != REG_ALL)
 893         {
 894                 int MOD_RESULT = 0;
 895
 896                 this->InvalidateCache();
 897
 898                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 899
 900                 if (MOD_RESULT)
 901                 {
 902                         ServerInstance->stats->statsCollisions++;
 903                         return false;
 904                 }
 905
 906                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
 907                 {
 908                         ServerInstance->stats->statsCollisions++;
 909                         return false;
 910                 }
 911         }
 912         else
 913         {
 914                 std::deque<classbase*> dummy;
 915                 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 916                 if (nickhandler) // wtfbbq, when would this not be here
 917                 {
 918                         nickhandler->HandleInternal(1, dummy);
 919                         bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
 920                         nickhandler->HandleInternal(0, dummy);
 921                         return result;
 922                 }
 923         }
 924
 925         // Unreachable.
 926         return false;
 927 }
 928
 929 void User::SetSockAddr(int protocol_family, const char* ip, int port)
 930 {
 931         this->cachedip = "";
 932
 933         switch (protocol_family)
 934         {
 935 #ifdef SUPPORT_IP6LINKS
 936                 case AF_INET6:
 937                 {
 938                         sockaddr_in6* sin = new sockaddr_in6;
 939                         sin->sin6_family = AF_INET6;
 940                         sin->sin6_port = port;
 941                         inet_pton(AF_INET6, ip, &sin->sin6_addr);
 942                         this->ip = (sockaddr*)sin;
 943                 }
 944                 break;
 945 #endif
 946                 case AF_INET:
 947                 {
 948                         sockaddr_in* sin = new sockaddr_in;
 949                         sin->sin_family = AF_INET;
 950                         sin->sin_port = port;
 951                         inet_pton(AF_INET, ip, &sin->sin_addr);
 952                         this->ip = (sockaddr*)sin;
 953                 }
 954                 break;
 955                 default:
 956                         ServerInstance->Log(DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
 957                 break;
 958         }
 959 }
 960
 961 int User::GetPort()
 962 {
 963         if (this->ip == NULL)
 964                 return 0;
 965
 966         switch (this->GetProtocolFamily())
 967         {
 968 #ifdef SUPPORT_IP6LINKS
 969                 case AF_INET6:
 970                 {
 971                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
 972                         return sin->sin6_port;
 973                 }
 974                 break;
 975 #endif
 976                 case AF_INET:
 977                 {
 978                         sockaddr_in* sin = (sockaddr_in*)this->ip;
 979                         return sin->sin_port;
 980                 }
 981                 break;
 982                 default:
 983                 break;
 984         }
 985         return 0;
 986 }
 987
 988 int User::GetProtocolFamily()
 989 {
 990         if (this->ip == NULL)
 991                 return 0;
 992
 993         sockaddr_in* sin = (sockaddr_in*)this->ip;
 994         return sin->sin_family;
 995 }
 996
 997 /*
 998  * XXX the duplication here is horrid..
 999  * do we really need two methods doing essentially the same thing?
1000  */
1001 const char* User::GetIPString()
1002 {
1003         static char buf[1024];
1004
1005         if (this->ip == NULL)
1006                 return "";
1007
1008         if (!this->cachedip.empty())
1009                 return this->cachedip.c_str();
1010
1011         switch (this->GetProtocolFamily())
1012         {
1013 #ifdef SUPPORT_IP6LINKS
1014                 case AF_INET6:
1015                 {
1016                         static char temp[1024];
1017
1018                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1019                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1020                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1021                         if (*buf == ':')
1022                         {
1023                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1024                                 *temp = '0';
1025                                 this->cachedip = temp;
1026                                 return temp;
1027                         }
1028
1029                         this->cachedip = buf;
1030                         return buf;
1031                 }
1032                 break;
1033 #endif
1034                 case AF_INET:
1035                 {
1036                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1037                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1038                         this->cachedip = buf;
1039                         return buf;
1040                 }
1041                 break;
1042                 default:
1043                 break;
1044         }
1045
1046         // Unreachable, probably
1047         return "";
1048 }
1049
1050 /** NOTE: We cannot pass a const reference to this method.
1051  * The string is changed by the workings of the method,
1052  * so that if we pass const ref, we end up copying it to
1053  * something we can change anyway. Makes sense to just let
1054  * the compiler do that copy for us.
1055  */
1056 void User::Write(std::string text)
1057 {
1058         if (!ServerInstance->SE->BoundsCheckFd(this))
1059                 return;
1060
1061         try
1062         {
1063                 ServerInstance->Logs->Log("USERIO", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1064                 text.append("\r\n");
1065         }
1066         catch (...)
1067         {
1068                 ServerInstance->Log(DEBUG,"Exception in User::Write() std::string::append");
1069                 return;
1070         }
1071
1072         if (ServerInstance->Config->GetIOHook(this->GetPort()))
1073         {
1074                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1075                  * implement their own buffering mechanisms
1076                  */
1077                 try
1078                 {
1079                         ServerInstance->Config->GetIOHook(this->GetPort())->OnRawSocketWrite(this->fd, text.data(), text.length());
1080                 }
1081                 catch (CoreException& modexcept)
1082                 {
1083                         ServerInstance->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1084                 }
1085         }
1086         else
1087         {
1088                 this->AddWriteBuf(text);
1089         }
1090         ServerInstance->stats->statsSent += text.length();
1091         this->ServerInstance->SE->WantWrite(this);
1092 }
1093
1094 /** Write()
1095  */
1096 void User::Write(const char *text, ...)
1097 {
1098         va_list argsPtr;
1099         char textbuffer[MAXBUF];
1100
1101         va_start(argsPtr, text);
1102         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1103         va_end(argsPtr);
1104
1105         this->Write(std::string(textbuffer));
1106 }
1107
1108 void User::WriteServ(const std::string& text)
1109 {
1110         char textbuffer[MAXBUF];
1111
1112         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1113         this->Write(std::string(textbuffer));
1114 }
1115
1116 /** WriteServ()
1117  *  Same as Write(), except `text' is prefixed with `:server.name '.
1118  */
1119 void User::WriteServ(const char* text, ...)
1120 {
1121         va_list argsPtr;
1122         char textbuffer[MAXBUF];
1123
1124         va_start(argsPtr, text);
1125         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1126         va_end(argsPtr);
1127
1128         this->WriteServ(std::string(textbuffer));
1129 }
1130
1131
1132 void User::WriteFrom(User *user, const std::string &text)
1133 {
1134         char tb[MAXBUF];
1135
1136         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1137
1138         this->Write(std::string(tb));
1139 }
1140
1141
1142 /* write text from an originating user to originating user */
1143
1144 void User::WriteFrom(User *user, const char* text, ...)
1145 {
1146         va_list argsPtr;
1147         char textbuffer[MAXBUF];
1148
1149         va_start(argsPtr, text);
1150         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1151         va_end(argsPtr);
1152
1153         this->WriteFrom(user, std::string(textbuffer));
1154 }
1155
1156
1157 /* write text to an destination user from a source user (e.g. user privmsg) */
1158
1159 void User::WriteTo(User *dest, const char *data, ...)
1160 {
1161         char textbuffer[MAXBUF];
1162         va_list argsPtr;
1163
1164         va_start(argsPtr, data);
1165         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1166         va_end(argsPtr);
1167
1168         this->WriteTo(dest, std::string(textbuffer));
1169 }
1170
1171 void User::WriteTo(User *dest, const std::string &data)
1172 {
1173         dest->WriteFrom(this, data);
1174 }
1175
1176
1177 void User::WriteCommon(const char* text, ...)
1178 {
1179         char textbuffer[MAXBUF];
1180         va_list argsPtr;
1181
1182         if (this->registered != REG_ALL)
1183                 return;
1184
1185         va_start(argsPtr, text);
1186         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1187         va_end(argsPtr);
1188
1189         this->WriteCommon(std::string(textbuffer));
1190 }
1191
1192 void User::WriteCommon(const std::string &text)
1193 {
1194         bool sent_to_at_least_one = false;
1195         char tb[MAXBUF];
1196
1197         if (this->registered != REG_ALL)
1198                 return;
1199
1200         uniq_id++;
1201
1202         /* We dont want to be doing this n times, just once */
1203         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1204         std::string out = tb;
1205
1206         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1207         {
1208                 CUList* ulist = v->first->GetUsers();
1209                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1210                 {
1211                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1212                         {
1213                                 already_sent[i->first->fd] = uniq_id;
1214                                 i->first->Write(out);
1215                                 sent_to_at_least_one = true;
1216                         }
1217                 }
1218         }
1219
1220         /*
1221          * if the user was not in any channels, no users will receive the text. Make sure the user
1222          * receives their OWN message for WriteCommon
1223          */
1224         if (!sent_to_at_least_one)
1225         {
1226                 this->Write(std::string(tb));
1227         }
1228 }
1229
1230
1231 /* write a formatted string to all users who share at least one common
1232  * channel, NOT including the source user e.g. for use in QUIT
1233  */
1234
1235 void User::WriteCommonExcept(const char* text, ...)
1236 {
1237         char textbuffer[MAXBUF];
1238         va_list argsPtr;
1239
1240         va_start(argsPtr, text);
1241         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1242         va_end(argsPtr);
1243
1244         this->WriteCommonExcept(std::string(textbuffer));
1245 }
1246
1247 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1248 {
1249         char tb1[MAXBUF];
1250         char tb2[MAXBUF];
1251
1252         if (this->registered != REG_ALL)
1253                 return;
1254
1255         uniq_id++;
1256         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1257         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1258         std::string out1 = tb1;
1259         std::string out2 = tb2;
1260
1261         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1262         {
1263                 CUList *ulist = v->first->GetUsers();
1264                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1265                 {
1266                         if (this != i->first)
1267                         {
1268                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1269                                 {
1270                                         already_sent[i->first->fd] = uniq_id;
1271                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1272                                 }
1273                         }
1274                 }
1275         }
1276 }
1277
1278 void User::WriteCommonExcept(const std::string &text)
1279 {
1280         char tb1[MAXBUF];
1281         std::string out1;
1282
1283         if (this->registered != REG_ALL)
1284                 return;
1285
1286         uniq_id++;
1287         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1288         out1 = tb1;
1289
1290         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1291         {
1292                 CUList *ulist = v->first->GetUsers();
1293                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1294                 {
1295                         if (this != i->first)
1296                         {
1297                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1298                                 {
1299                                         already_sent[i->first->fd] = uniq_id;
1300                                         i->first->Write(out1);
1301                                 }
1302                         }
1303                 }
1304         }
1305
1306 }
1307
1308 void User::WriteWallOps(const std::string &text)
1309 {
1310         if (!IS_OPER(this) && IS_LOCAL(this))
1311                 return;
1312
1313         std::string wallop("WALLOPS :");
1314         wallop.append(text);
1315
1316         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1317         {
1318                 User* t = *i;
1319                 if (t->IsModeSet('w'))
1320                         this->WriteTo(t,wallop);
1321         }
1322 }
1323
1324 void User::WriteWallOps(const char* text, ...)
1325 {
1326         char textbuffer[MAXBUF];
1327         va_list argsPtr;
1328
1329         va_start(argsPtr, text);
1330         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1331         va_end(argsPtr);
1332
1333         this->WriteWallOps(std::string(textbuffer));
1334 }
1335
1336 /* return 0 or 1 depending if users u and u2 share one or more common channels
1337  * (used by QUIT, NICK etc which arent channel specific notices)
1338  *
1339  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1340  * the first users channels then the second users channels within the outer loop,
1341  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1342  * all possible iterations). However this new function instead checks against the
1343  * channel's userlist in the inner loop which is a std::map<User*,User*>
1344  * and saves us time as we already know what pointer value we are after.
1345  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1346  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1347  */
1348 bool User::SharesChannelWith(User *other)
1349 {
1350         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1351                 return false;
1352
1353         /* Outer loop */
1354         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1355         {
1356                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1357                  * by replacing it with a map::find which *should* be more efficient
1358                  */
1359                 if (i->first->HasUser(other))
1360                         return true;
1361         }
1362         return false;
1363 }
1364
1365 bool User::ChangeName(const char* gecos)
1366 {
1367         if (!strcmp(gecos, this->fullname))
1368                 return true;
1369
1370         if (IS_LOCAL(this))
1371         {
1372                 int MOD_RESULT = 0;
1373                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1374                 if (MOD_RESULT)
1375                         return false;
1376                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1377         }
1378         strlcpy(this->fullname,gecos,MAXGECOS+1);
1379
1380         return true;
1381 }
1382
1383 bool User::ChangeDisplayedHost(const char* host)
1384 {
1385         if (!strcmp(host, this->dhost))
1386                 return true;
1387
1388         if (IS_LOCAL(this))
1389         {
1390                 int MOD_RESULT = 0;
1391                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,host));
1392                 if (MOD_RESULT)
1393                         return false;
1394                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,host));
1395         }
1396
1397         if (this->ServerInstance->Config->CycleHosts)
1398                 this->WriteCommonExcept("QUIT :Changing hosts");
1399
1400         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1401         strlcpy(this->dhost,host,64);
1402
1403         this->InvalidateCache();
1404
1405         if (this->ServerInstance->Config->CycleHosts)
1406         {
1407                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1408                 {
1409                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1410                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1411                         if (n.length() > 0)
1412                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1413                 }
1414         }
1415
1416         if (IS_LOCAL(this))
1417                 this->WriteServ("396 %s %s :is now your displayed host",this->nick,this->dhost);
1418
1419         return true;
1420 }
1421
1422 bool User::ChangeIdent(const char* newident)
1423 {
1424         if (!strcmp(newident, this->ident))
1425                 return true;
1426
1427         if (this->ServerInstance->Config->CycleHosts)
1428                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1429
1430         strlcpy(this->ident, newident, IDENTMAX+1);
1431
1432         this->InvalidateCache();
1433
1434         if (this->ServerInstance->Config->CycleHosts)
1435         {
1436                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1437                 {
1438                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1439                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1440                         if (n.length() > 0)
1441                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1442                 }
1443         }
1444
1445         return true;
1446 }
1447
1448 void User::SendAll(const char* command, char* text, ...)
1449 {
1450         char textbuffer[MAXBUF];
1451         char formatbuffer[MAXBUF];
1452         va_list argsPtr;
1453
1454         va_start(argsPtr, text);
1455         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1456         va_end(argsPtr);
1457
1458         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1459         std::string fmt = formatbuffer;
1460
1461         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1462         {
1463                 (*i)->Write(fmt);
1464         }
1465 }
1466
1467
1468 std::string User::ChannelList(User* source)
1469 {
1470         std::string list;
1471
1472         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1473         {
1474                 /* If the target is the same as the sender, let them see all their channels.
1475                  * If the channel is NOT private/secret OR the user shares a common channel
1476                  * If the user is an oper, and the <options:operspywhois> option is set.
1477                  */
1478                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1479                 {
1480                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1481                 }
1482         }
1483
1484         return list;
1485 }
1486
1487 void User::SplitChanList(User* dest, const std::string &cl)
1488 {
1489         std::string line;
1490         std::ostringstream prefix;
1491         std::string::size_type start, pos, length;
1492
1493         prefix << this->nick << " " << dest->nick << " :";
1494         line = prefix.str();
1495         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1496
1497         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1498         {
1499                 length = (pos == std::string::npos) ? cl.length() : pos;
1500
1501                 if (line.length() + namelen + length - start > 510)
1502                 {
1503                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1504                         line = prefix.str();
1505                 }
1506
1507                 if(pos == std::string::npos)
1508                 {
1509                         line.append(cl.substr(start, length - start));
1510                         break;
1511                 }
1512                 else
1513                 {
1514                         line.append(cl.substr(start, length - start + 1));
1515                 }
1516         }
1517
1518         if (line.length())
1519         {
1520                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1521         }
1522 }
1523
1524 unsigned int User::GetMaxChans()
1525 {
1526         return this->MaxChans;
1527 }
1528
1529
1530 /*
1531  * Sets a user's connection class.
1532  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1533  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1534  * then their ip will be taken as 'priority' anyway, so for example,
1535  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1536  */
1537 ConnectClass* User::SetClass(const std::string &explicit_name)
1538 {
1539         ConnectClass *found = NULL;
1540
1541         if (!IS_LOCAL(this))
1542                 return NULL;
1543
1544         if (!explicit_name.empty())
1545         {
1546                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1547                 {
1548                         ConnectClass* c = *i;
1549
1550                         if (explicit_name == c->GetName() && !c->GetDisabled())
1551                         {
1552                                 found = c;
1553                         }
1554                 }
1555         }
1556         else
1557         {
1558                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1559                 {
1560                         ConnectClass* c = *i;
1561
1562                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1563                         {
1564                                 if (c->GetPort())
1565                                 {
1566                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1567                                         {
1568                                                 found = c;
1569                                         }
1570                                         else
1571                                                 continue;
1572                                 }
1573                                 else
1574                                 {
1575                                         if (!c->GetDisabled())
1576                                                 found = c;
1577                                 }
1578                         }
1579                 }
1580         }
1581
1582         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1583         if (found)
1584         {
1585                 /* deny change if change will take class over the limit */
1586                 if (found->limit && (found->RefCount + 1 >= found->limit))
1587                 {
1588                         ServerInstance->Log(DEBUG, "OOPS: Connect class limit (%u) hit, denying", found->limit);
1589                         return this->MyClass;
1590                 }
1591
1592                 /* should always be valid, but just in case .. */
1593                 if (this->MyClass)
1594                 {
1595                         if (found == this->MyClass) // no point changing this shit :P
1596                                 return this->MyClass;
1597                         this->MyClass->RefCount--;
1598                         ServerInstance->Log(DEBUG, "Untying user from connect class -- refcount: %u", this->MyClass->RefCount);
1599                 }
1600
1601                 this->MyClass = found;
1602                 this->MyClass->RefCount++;
1603                 ServerInstance->Log(DEBUG, "User tied to new class -- connect refcount now: %u", this->MyClass->RefCount);
1604         }
1605
1606         return this->MyClass;
1607 }
1608
1609 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1610  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1611  * then their ip will be taken as 'priority' anyway, so for example,
1612  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1613  */
1614 ConnectClass* User::GetClass()
1615 {
1616         return this->MyClass;
1617 }
1618
1619 void User::PurgeEmptyChannels()
1620 {
1621         std::vector<Channel*> to_delete;
1622
1623         // firstly decrement the count on each channel
1624         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1625         {
1626                 f->first->RemoveAllPrefixes(this);
1627                 if (f->first->DelUser(this) == 0)
1628                 {
1629                         /* No users left in here, mark it for deletion */
1630                         try
1631                         {
1632                                 to_delete.push_back(f->first);
1633                         }
1634                         catch (...)
1635                         {
1636                                 ServerInstance->Log(DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1637                         }
1638                 }
1639         }
1640
1641         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1642         {
1643                 Channel* thischan = *n;
1644                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1645                 if (i2 != ServerInstance->chanlist->end())
1646                 {
1647                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1648                         delete i2->second;
1649                         ServerInstance->chanlist->erase(i2);
1650                         this->chans.erase(*n);
1651                 }
1652         }
1653
1654         this->UnOper();
1655 }
1656
1657 void User::ShowMOTD()
1658 {
1659         if (!ServerInstance->Config->MOTD.size())
1660         {
1661                 this->WriteServ("422 %s :Message of the day file is missing.",this->nick);
1662                 return;
1663         }
1664         this->WriteServ("375 %s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1665
1666         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1667                 this->WriteServ("372 %s :- %s",this->nick,i->c_str());
1668
1669         this->WriteServ("376 %s :End of message of the day.", this->nick);
1670 }
1671
1672 void User::ShowRULES()
1673 {
1674         if (!ServerInstance->Config->RULES.size())
1675         {
1676                 this->WriteServ("434 %s :RULES File is missing",this->nick);
1677                 return;
1678         }
1679
1680         this->WriteServ("308 %s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1681
1682         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1683                 this->WriteServ("232 %s :- %s",this->nick,i->c_str());
1684
1685         this->WriteServ("309 %s :End of RULES command.",this->nick);
1686 }
1687
1688 void User::HandleEvent(EventType et, int errornum)
1689 {
1690         if (this->quitting) // drop everything, user is due to be quit
1691                 return;
1692
1693         /* WARNING: May delete this user! */
1694         int thisfd = this->GetFd();
1695
1696         try
1697         {
1698                 switch (et)
1699                 {
1700                         case EVENT_READ:
1701                                 ServerInstance->ProcessUser(this);
1702                         break;
1703                         case EVENT_WRITE:
1704                                 this->FlushWriteBuf();
1705                         break;
1706                         case EVENT_ERROR:
1707                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1708                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1709                         break;
1710                 }
1711         }
1712         catch (...)
1713         {
1714                 ServerInstance->Log(DEBUG,"Exception in User::HandleEvent intercepted");
1715         }
1716
1717         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1718         if ((ServerInstance->SE->GetRef(thisfd) == this))
1719         {
1720                 if (!WriteError.empty())
1721                 {
1722                         User::QuitUser(ServerInstance, this, GetWriteError());
1723                 }
1724         }
1725 }
1726
1727 void User::SetOperQuit(const std::string &oquit)
1728 {
1729         operquitmsg = oquit;
1730 }
1731
1732 const char* User::GetOperQuit()
1733 {
1734         return operquitmsg.c_str();
1735 }
1736
1737 void User::IncreasePenalty(int increase)
1738 {
1739         this->Penalty += increase;
1740 }
1741
1742 void User::DecreasePenalty(int decrease)
1743 {
1744         this->Penalty -= decrease;
1745 }
1746
1747 VisData::VisData()
1748 {
1749 }
1750
1751 VisData::~VisData()
1752 {
1753 }
1754
1755 bool VisData::VisibleTo(User* user)
1756 {
1757         return true;
1758 }
1759