src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core: libIRCDusers */
  15
  16 #include "inspircd.h"
  17 #include <stdarg.h>
  18 #include "socketengine.h"
  19 #include "wildcard.h"
  20 #include "xline.h"
  21 #include "bancache.h"
  22 #include "commands/cmd_whowas.h"
  23
  24 static unsigned long already_sent[MAX_DESCRIPTORS] = {0};
  25
  26 /* XXX: Used for speeding up WriteCommon operations */
  27 unsigned long uniq_id = 0;
  28
  29 std::string User::ProcessNoticeMasks(const char *sm)
  30 {
  31         bool adding = true, oldadding = false;
  32         const char *c = sm;
  33         std::string output;
  34
  35         while (c && *c)
  36         {
  37                 switch (*c)
  38                 {
  39                         case '+':
  40                                 adding = true;
  41                         break;
  42                         case '-':
  43                                 adding = false;
  44                         break;
  45                         case '*':
  46                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  47                                 {
  48                                         if (ServerInstance->SNO->IsEnabled(d))
  49                                         {
  50                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  51                                                 {
  52                                                         if ((oldadding != adding) || (!output.length()))
  53                                                                 output += (adding ? '+' : '-');
  54
  55                                                         this->SetNoticeMask(d, adding);
  56
  57                                                         output += d;
  58                                                 }
  59                                         }
  60                                         oldadding = adding;
  61                                 }
  62                         break;
  63                         default:
  64                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  65                                 {
  66                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  67                                         {
  68                                                 if ((oldadding != adding) || (!output.length()))
  69                                                         output += (adding ? '+' : '-');
  70
  71                                                 this->SetNoticeMask(*c, adding);
  72
  73                                                 output += *c;
  74                                         }
  75                                 }
  76                                 else
  77                                         this->WriteNumeric(501, "%s %c :is unknown snomask char to me", this->nick, *c);
  78
  79                                 oldadding = adding;
  80                         break;
  81                 }
  82
  83                 *c++;
  84         }
  85
  86         return output;
  87 }
  88
  89 void User::StartDNSLookup()
  90 {
  91         try
  92         {
  93                 bool cached;
  94                 const char* sip = this->GetIPString();
  95
  96                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
  97                 if (!strncmp(sip, "0::ffff:", 8))
  98                         res_reverse = new UserResolver(this->ServerInstance, this, sip + 8, DNS_QUERY_PTR4, cached);
  99                 else
 100                         res_reverse = new UserResolver(this->ServerInstance, this, sip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 101
 102                 this->ServerInstance->AddResolver(res_reverse, cached);
 103         }
 104         catch (CoreException& e)
 105         {
 106                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 107         }
 108 }
 109
 110 bool User::IsNoticeMaskSet(unsigned char sm)
 111 {
 112         return (snomasks[sm-65]);
 113 }
 114
 115 void User::SetNoticeMask(unsigned char sm, bool value)
 116 {
 117         snomasks[sm-65] = value;
 118 }
 119
 120 const char* User::FormatNoticeMasks()
 121 {
 122         static char data[MAXBUF];
 123         int offset = 0;
 124
 125         for (int n = 0; n < 64; n++)
 126         {
 127                 if (snomasks[n])
 128                         data[offset++] = n+65;
 129         }
 130
 131         data[offset] = 0;
 132         return data;
 133 }
 134
 135
 136
 137 bool User::IsModeSet(unsigned char m)
 138 {
 139         return (modes[m-65]);
 140 }
 141
 142 void User::SetMode(unsigned char m, bool value)
 143 {
 144         modes[m-65] = value;
 145 }
 146
 147 const char* User::FormatModes()
 148 {
 149         static char data[MAXBUF];
 150         int offset = 0;
 151         for (int n = 0; n < 64; n++)
 152         {
 153                 if (modes[n])
 154                         data[offset++] = n+65;
 155         }
 156         data[offset] = 0;
 157         return data;
 158 }
 159
 160 void User::DecrementModes()
 161 {
 162         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 163         for (unsigned char n = 'A'; n <= 'z'; n++)
 164         {
 165                 if (modes[n-65])
 166                 {
 167                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 168                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 169                         if (mh)
 170                         {
 171                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 172                                 mh->ChangeCount(-1);
 173                         }
 174                 }
 175         }
 176 }
 177
 178 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 179 {
 180         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 181         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 182         reset_due = ServerInstance->Time();
 183         age = ServerInstance->Time();
 184         Penalty = 0;
 185         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 186         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 187         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 188         fd = -1;
 189         recvq.clear();
 190         sendq.clear();
 191         WriteError.clear();
 192         res_forward = res_reverse = NULL;
 193         Visibility = NULL;
 194         ip = NULL;
 195         MyClass = NULL;
 196         io = NULL;
 197         AllowedUserModes = NULL;
 198         AllowedChanModes = NULL;
 199         AllowedOperCommands = NULL;
 200         chans.clear();
 201         invites.clear();
 202         memset(modes,0,sizeof(modes));
 203         memset(snomasks,0,sizeof(snomasks));
 204         /* Invalidate cache */
 205         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 206
 207         if (uid.empty())
 208                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 209         else
 210                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 211
 212         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 213
 214         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 215         if (finduuid == Instance->Users->uuidlist->end())
 216                 (*Instance->Users->uuidlist)[uuid] = this;
 217         else
 218                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 219 }
 220
 221 User::~User()
 222 {
 223         /* NULL for remote users :) */
 224         if (this->MyClass)
 225         {
 226                 this->MyClass->RefCount--;
 227                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %lu", this->MyClass->RefCount);
 228         }
 229         if (this->AllowedOperCommands)
 230         {
 231                 delete AllowedOperCommands;
 232                 AllowedOperCommands = NULL;
 233         }
 234
 235         if (this->AllowedUserModes)
 236         {
 237                 delete[] AllowedUserModes;
 238                 AllowedUserModes = NULL;
 239         }
 240
 241         if (this->AllowedChanModes)
 242         {
 243                 delete[] AllowedChanModes;
 244                 AllowedChanModes = NULL;
 245         }
 246
 247         this->InvalidateCache();
 248         this->DecrementModes();
 249
 250         if (ip)
 251         {
 252                 ServerInstance->Users->RemoveCloneCounts(this);
 253
 254                 if (this->GetProtocolFamily() == AF_INET)
 255                 {
 256                         delete (sockaddr_in*)ip;
 257                 }
 258 #ifdef SUPPORT_IP6LINKS
 259                 else
 260                 {
 261                         delete (sockaddr_in6*)ip;
 262                 }
 263 #endif
 264         }
 265
 266         ServerInstance->Users->uuidlist->erase(uuid);
 267 }
 268
 269 char* User::MakeHost()
 270 {
 271         if (this->cached_makehost)
 272                 return this->cached_makehost;
 273
 274         char nhost[MAXBUF];
 275         /* This is much faster than snprintf */
 276         char* t = nhost;
 277         for(char* n = ident; *n; n++)
 278                 *t++ = *n;
 279         *t++ = '@';
 280         for(char* n = host; *n; n++)
 281                 *t++ = *n;
 282         *t = 0;
 283
 284         this->cached_makehost = strdup(nhost);
 285
 286         return this->cached_makehost;
 287 }
 288
 289 char* User::MakeHostIP()
 290 {
 291         if (this->cached_hostip)
 292                 return this->cached_hostip;
 293
 294         char ihost[MAXBUF];
 295         /* This is much faster than snprintf */
 296         char* t = ihost;
 297         for(char* n = ident; *n; n++)
 298                 *t++ = *n;
 299         *t++ = '@';
 300         for(const char* n = this->GetIPString(); *n; n++)
 301                 *t++ = *n;
 302         *t = 0;
 303
 304         this->cached_hostip = strdup(ihost);
 305
 306         return this->cached_hostip;
 307 }
 308
 309 void User::CloseSocket()
 310 {
 311         ServerInstance->SE->Shutdown(this, 2);
 312         ServerInstance->SE->Close(this);
 313 }
 314
 315 char* User::GetFullHost()
 316 {
 317         if (this->cached_fullhost)
 318                 return this->cached_fullhost;
 319
 320         char result[MAXBUF];
 321         char* t = result;
 322         for(char* n = nick; *n; n++)
 323                 *t++ = *n;
 324         *t++ = '!';
 325         for(char* n = ident; *n; n++)
 326                 *t++ = *n;
 327         *t++ = '@';
 328         for(char* n = dhost; *n; n++)
 329                 *t++ = *n;
 330         *t = 0;
 331
 332         this->cached_fullhost = strdup(result);
 333
 334         return this->cached_fullhost;
 335 }
 336
 337 char* User::MakeWildHost()
 338 {
 339         static char nresult[MAXBUF];
 340         char* t = nresult;
 341         *t++ = '*';     *t++ = '!';
 342         *t++ = '*';     *t++ = '@';
 343         for(char* n = dhost; *n; n++)
 344                 *t++ = *n;
 345         *t = 0;
 346         return nresult;
 347 }
 348
 349 int User::ReadData(void* buffer, size_t size)
 350 {
 351         if (IS_LOCAL(this))
 352         {
 353 #ifndef WIN32
 354                 return read(this->fd, buffer, size);
 355 #else
 356                 return recv(this->fd, (char*)buffer, size, 0);
 357 #endif
 358         }
 359         else
 360                 return 0;
 361 }
 362
 363
 364 char* User::GetFullRealHost()
 365 {
 366         if (this->cached_fullrealhost)
 367                 return this->cached_fullrealhost;
 368
 369         char fresult[MAXBUF];
 370         char* t = fresult;
 371         for(char* n = nick; *n; n++)
 372                 *t++ = *n;
 373         *t++ = '!';
 374         for(char* n = ident; *n; n++)
 375                 *t++ = *n;
 376         *t++ = '@';
 377         for(char* n = host; *n; n++)
 378                 *t++ = *n;
 379         *t = 0;
 380
 381         this->cached_fullrealhost = strdup(fresult);
 382
 383         return this->cached_fullrealhost;
 384 }
 385
 386 bool User::IsInvited(const irc::string &channel)
 387 {
 388         time_t now = time(NULL);
 389         InvitedList::iterator safei;
 390         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 391         {
 392                 if (channel == i->first)
 393                 {
 394                         if (i->second != 0 && now > i->second)
 395                         {
 396                                 /* Expired invite, remove it. */
 397                                 safei = i;
 398                                 --i;
 399                                 invites.erase(safei);
 400                                 continue;
 401                         }
 402                         return true;
 403                 }
 404         }
 405         return false;
 406 }
 407
 408 InvitedList* User::GetInviteList()
 409 {
 410         time_t now = time(NULL);
 411         /* Weed out expired invites here. */
 412         InvitedList::iterator safei;
 413         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 414         {
 415                 if (i->second != 0 && now > i->second)
 416                 {
 417                         /* Expired invite, remove it. */
 418                         safei = i;
 419                         --i;
 420                         invites.erase(safei);
 421                 }
 422         }
 423         return &invites;
 424 }
 425
 426 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 427 {
 428         time_t now = time(NULL);
 429         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 430         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 431         {
 432                 if (channel == i->first)
 433                 {
 434                         if (i->second != 0 && invtimeout > i->second)
 435                         {
 436                                 i->second = invtimeout;
 437                         }
 438                 }
 439         }
 440         invites.push_back(std::make_pair(channel, invtimeout));
 441 }
 442
 443 void User::RemoveInvite(const irc::string &channel)
 444 {
 445         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 446         {
 447                 if (channel == i->first)
 448                 {
 449                         invites.erase(i);
 450                         return;
 451                 }
 452         }
 453 }
 454
 455 bool User::HasModePermission(unsigned char mode, ModeType type)
 456 {
 457         if (!IS_LOCAL(this))
 458                 return true;
 459
 460         if (!IS_OPER(this))
 461                 return false;
 462
 463         if (!AllowedUserModes || !AllowedChanModes)
 464                 return false;
 465
 466         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 467
 468 }
 469
 470 bool User::HasPermission(const std::string &command)
 471 {
 472         /*
 473          * users on remote servers can completely bypass all permissions based checks.
 474          * This prevents desyncs when one server has different type/class tags to another.
 475          * That having been said, this does open things up to the possibility of source changes
 476          * allowing remote kills, etc - but if they have access to the src, they most likely have
 477          * access to the conf - so it's an end to a means either way.
 478          */
 479         if (!IS_LOCAL(this))
 480                 return true;
 481
 482         // are they even an oper at all?
 483         if (!IS_OPER(this))
 484         {
 485                 return false;
 486         }
 487
 488         if (!AllowedOperCommands)
 489                 return false;
 490
 491         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 492                 return true;
 493         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 494                 return true;
 495
 496         return false;
 497 }
 498
 499 /** NOTE: We cannot pass a const reference to this method.
 500  * The string is changed by the workings of the method,
 501  * so that if we pass const ref, we end up copying it to
 502  * something we can change anyway. Makes sense to just let
 503  * the compiler do that copy for us.
 504  */
 505 bool User::AddBuffer(std::string a)
 506 {
 507         try
 508         {
 509                 std::string::size_type i = a.rfind('\r');
 510
 511                 while (i != std::string::npos)
 512                 {
 513                         a.erase(i, 1);
 514                         i = a.rfind('\r');
 515                 }
 516
 517                 if (a.length())
 518                         recvq.append(a);
 519
 520                 if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 521                 {
 522                         this->SetWriteError("RecvQ exceeded");
 523                         ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %d exceeds connect class maximum of %lu",this->nick,recvq.length(),this->MyClass->GetRecvqMax());
 524                         return false;
 525                 }
 526
 527                 return true;
 528         }
 529
 530         catch (...)
 531         {
 532                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::AddBuffer()");
 533                 return false;
 534         }
 535 }
 536
 537 bool User::BufferIsReady()
 538 {
 539         return (recvq.find('\n') != std::string::npos);
 540 }
 541
 542 void User::ClearBuffer()
 543 {
 544         recvq.clear();
 545 }
 546
 547 std::string User::GetBuffer()
 548 {
 549         try
 550         {
 551                 if (recvq.empty())
 552                         return "";
 553
 554                 /* Strip any leading \r or \n off the string.
 555                  * Usually there are only one or two of these,
 556                  * so its is computationally cheap to do.
 557                  */
 558                 std::string::iterator t = recvq.begin();
 559                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 560                 {
 561                         recvq.erase(t);
 562                         t = recvq.begin();
 563                 }
 564
 565                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 566                 {
 567                         /* Find the first complete line, return it as the
 568                          * result, and leave the recvq as whats left
 569                          */
 570                         if (*x == '\n')
 571                         {
 572                                 std::string ret = std::string(recvq.begin(), x);
 573                                 recvq.erase(recvq.begin(), x + 1);
 574                                 return ret;
 575                         }
 576                 }
 577                 return "";
 578         }
 579
 580         catch (...)
 581         {
 582                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 583                 return "";
 584         }
 585 }
 586
 587 void User::AddWriteBuf(const std::string &data)
 588 {
 589         if (*this->GetWriteError())
 590                 return;
 591
 592         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 593         {
 594                 /*
 595                  * Fix by brain - Set the error text BEFORE calling, because
 596                  * if we dont it'll recursively  call here over and over again trying
 597                  * to repeatedly add the text to the sendq!
 598                  */
 599                 this->SetWriteError("SendQ exceeded");
 600                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %d exceeds connect class maximum of %lu",this->nick,sendq.length() + data.length(),this->MyClass->GetSendqMax());
 601                 return;
 602         }
 603
 604         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 605                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 606         else
 607                 sendq.append(data);
 608 }
 609
 610 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 611 void User::FlushWriteBuf()
 612 {
 613         try
 614         {
 615                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 616                 {
 617                         sendq.clear();
 618                 }
 619                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 620                 {
 621                         int old_sendq_length = sendq.length();
 622                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 623
 624                         if (n_sent == -1)
 625                         {
 626                                 if (errno == EAGAIN)
 627                                 {
 628                                         /* The socket buffer is full. This isnt fatal,
 629                                          * try again later.
 630                                          */
 631                                         this->ServerInstance->SE->WantWrite(this);
 632                                 }
 633                                 else
 634                                 {
 635                                         /* Fatal error, set write error and bail
 636                                          */
 637                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 638                                         return;
 639                                 }
 640                         }
 641                         else
 642                         {
 643                                 /* advance the queue */
 644                                 if (n_sent)
 645                                         this->sendq = this->sendq.substr(n_sent);
 646                                 /* update the user's stats counters */
 647                                 this->bytes_out += n_sent;
 648                                 this->cmds_out++;
 649                                 if (n_sent != old_sendq_length)
 650                                         this->ServerInstance->SE->WantWrite(this);
 651                         }
 652                 }
 653         }
 654
 655         catch (...)
 656         {
 657                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 658         }
 659
 660         if (this->sendq.empty())
 661         {
 662                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 663         }
 664 }
 665
 666 void User::SetWriteError(const std::string &error)
 667 {
 668         // don't try to set the error twice, its already set take the first string.
 669         if (this->WriteError.empty())
 670                 this->WriteError = error;
 671 }
 672
 673 const char* User::GetWriteError()
 674 {
 675         return this->WriteError.c_str();
 676 }
 677
 678 void User::Oper(const std::string &opertype, const std::string &opername)
 679 {
 680         char* mycmd;
 681         char* savept;
 682         char* savept2;
 683
 684         try
 685         {
 686                 this->modes[UM_OPERATOR] = 1;
 687                 this->WriteServ("MODE %s :+o", this->nick);
 688                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 689                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 690                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 691                 ServerInstance->Users->all_opers.push_back(this);
 692
 693                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 694                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 695                 {
 696
 697                         if (AllowedOperCommands)
 698                                 AllowedOperCommands->clear();
 699                         else
 700                                 AllowedOperCommands = new std::map<std::string, bool>;
 701
 702                         if (!AllowedChanModes)
 703                                 AllowedChanModes = new bool[64];
 704
 705                         if (!AllowedUserModes)
 706                                 AllowedUserModes = new bool[64];
 707
 708                         memset(AllowedUserModes, 0, 64);
 709                         memset(AllowedChanModes, 0, 64);
 710
 711                         char* Classes = strdup(iter_opertype->second);
 712                         char* myclass = strtok_r(Classes," ",&savept);
 713                         while (myclass)
 714                         {
 715                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 716                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 717                                 {
 718                                         char* CommandList = strdup(iter_operclass->second.commandlist);
 719                                         mycmd = strtok_r(CommandList," ",&savept2);
 720                                         while (mycmd)
 721                                         {
 722                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 723                                                 mycmd = strtok_r(NULL," ",&savept2);
 724                                         }
 725                                         free(CommandList);
 726                                         this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 727                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 728                                         {
 729                                                 if (*c == '*')
 730                                                 {
 731                                                         memset(this->AllowedUserModes, (int)(true), 64);
 732                                                 }
 733                                                 else
 734                                                 {
 735                                                         this->AllowedUserModes[*c - 'A'] = true;
 736                                                 }
 737                                         }
 738                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 739                                         {
 740                                                 if (*c == '*')
 741                                                 {
 742                                                         memset(this->AllowedChanModes, (int)(true), 64);
 743                                                 }
 744                                                 else
 745                                                 {
 746                                                         this->AllowedChanModes[*c - 'A'] = true;
 747                                                 }
 748                                         }
 749                                 }
 750                                 myclass = strtok_r(NULL," ",&savept);
 751                         }
 752                         free(Classes);
 753                 }
 754
 755                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 756         }
 757
 758         catch (...)
 759         {
 760                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 761         }
 762 }
 763
 764 void User::UnOper()
 765 {
 766         if (IS_OPER(this))
 767         {
 768                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 769                 std::string moderemove("-");
 770
 771                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 772                 {
 773                         if (letter != 'o')
 774                         {
 775                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 776                                 if (mh && mh->NeedsOper())
 777                                         moderemove += letter;
 778                         }
 779                 }
 780
 781                 const char* parameters[] = { this->nick, moderemove.c_str() };
 782                 ServerInstance->Parser->CallHandler("MODE", parameters, 2, this);
 783
 784                 /* unset their oper type (what IS_OPER checks), and remove +o */
 785                 *this->oper = 0;
 786                 this->modes[UM_OPERATOR] = 0;
 787
 788                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 789                 ServerInstance->Users->all_opers.remove(this);
 790
 791                 if (AllowedOperCommands)
 792                 {
 793                         delete AllowedOperCommands;
 794                         AllowedOperCommands = NULL;
 795                 }
 796                 if (AllowedUserModes)
 797                 {
 798                         delete[] AllowedUserModes;
 799                         AllowedUserModes = NULL;
 800                 }
 801                 if (AllowedChanModes)
 802                 {
 803                         delete[] AllowedChanModes;
 804                         AllowedChanModes = NULL;
 805                 }
 806
 807         }
 808 }
 809
 810 void User::QuitUser(InspIRCd* Instance, User *user, const std::string &quitreason, const char* operreason)
 811 {
 812         Instance->Logs->Log("USERS", DEBUG,"QuitUser: %s '%s'", user->nick, quitreason.c_str());
 813         user->Write("ERROR :Closing link (%s@%s) [%s]", user->ident, user->host, *operreason ? operreason : quitreason.c_str());
 814         user->quietquit = false;
 815         user->quitmsg = quitreason;
 816
 817         if (!*operreason)
 818                 user->operquitmsg = quitreason;
 819         else
 820                 user->operquitmsg = operreason;
 821
 822         Instance->GlobalCulls.AddItem(user);
 823 }
 824
 825 /* adds or updates an entry in the whowas list */
 826 void User::AddToWhoWas()
 827 {
 828         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 829         if (whowas_command)
 830         {
 831                 std::deque<classbase*> params;
 832                 params.push_back(this);
 833                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 834         }
 835 }
 836
 837 /*
 838  * Check class restrictions
 839  */
 840 void User::CheckClass()
 841 {
 842         ConnectClass* a = this->MyClass;
 843
 844         if ((!a) || (a->GetType() == CC_DENY))
 845         {
 846                 User::QuitUser(ServerInstance, this, "Unauthorised connection");
 847                 return;
 848         }
 849         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 850         {
 851                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (local)");
 852                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 853                 return;
 854         }
 855         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 856         {
 857                 User::QuitUser(ServerInstance, this, "No more connections allowed from your host via this connect class (global)");
 858                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 859                 return;
 860         }
 861
 862         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 863         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 864         this->MaxChans = a->GetMaxChans();
 865 }
 866
 867 void User::FullConnect()
 868 {
 869         ServerInstance->stats->statsConnects++;
 870         this->idle_lastmsg = ServerInstance->Time();
 871
 872         /*
 873          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 874          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 875          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 876          * Don't remove this! -- w00t
 877          */
 878         this->SetClass();
 879
 880         /* Check the password, if one is required by the user's connect class.
 881          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 882          */
 883         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 884         {
 885                 User::QuitUser(ServerInstance, this, "Invalid password");
 886                 return;
 887         }
 888
 889         if (!this->exempt)
 890         {
 891                 GLine *r = (GLine *)ServerInstance->XLines->MatchesLine("G", this);
 892
 893                 if (r)
 894                 {
 895                         r->Apply(this);
 896                         return;
 897                 }
 898
 899                 KLine *n = (KLine *)ServerInstance->XLines->MatchesLine("K", this);
 900
 901                 if (n)
 902                 {
 903                         n->Apply(this);
 904                         return;
 905                 }
 906         }
 907
 908         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 909         this->WriteNumeric(001, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 910         this->WriteNumeric(002, "%s :Your host is %s, running version %s",this->nick,ServerInstance->Config->ServerName,VERSION);
 911         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 912         this->WriteNumeric(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());
 913
 914         ServerInstance->Config->Send005(this);
 915
 916         this->WriteNumeric(42, "%s %s :your unique ID", this->nick, this->uuid);
 917
 918
 919         this->ShowMOTD();
 920
 921         /* Now registered */
 922         if (ServerInstance->Users->unregistered_count)
 923                 ServerInstance->Users->unregistered_count--;
 924
 925         /* Trigger LUSERS output, give modules a chance too */
 926         int MOD_RESULT = 0;
 927         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", NULL, 0, this, true, "LUSERS"));
 928         if (!MOD_RESULT)
 929                 ServerInstance->CallCommandHandler("LUSERS", NULL, 0, this);
 930
 931         /*
 932          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 933          * for a user that doesn't exist yet.
 934          */
 935         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 936
 937         this->registered = REG_ALL;
 938
 939         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 940
 941         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);
 942         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 943         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 944 }
 945
 946 /** User::UpdateNick()
 947  * re-allocates a nick in the user_hash after they change nicknames,
 948  * returns a pointer to the new user as it may have moved
 949  */
 950 User* User::UpdateNickHash(const char* New)
 951 {
 952         //user_hash::iterator newnick;
 953         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 954
 955         if (!strcasecmp(this->nick,New))
 956                 return oldnick->second;
 957
 958         if (oldnick == ServerInstance->Users->clientlist->end())
 959                 return NULL; /* doesnt exist */
 960
 961         User* olduser = oldnick->second;
 962         (*(ServerInstance->Users->clientlist))[New] = olduser;
 963         ServerInstance->Users->clientlist->erase(oldnick);
 964         return olduser;
 965 }
 966
 967 void User::InvalidateCache()
 968 {
 969         /* Invalidate cache */
 970         if (cached_fullhost)
 971                 free(cached_fullhost);
 972         if (cached_hostip)
 973                 free(cached_hostip);
 974         if (cached_makehost)
 975                 free(cached_makehost);
 976         if (cached_fullrealhost)
 977                 free(cached_fullrealhost);
 978         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 979 }
 980
 981 bool User::ForceNickChange(const char* newnick)
 982 {
 983         /*
 984          * XXX this makes no sense..
 985          * why do we do nothing for change on users not REG_ALL?
 986          * why do we trigger events twice for everyone previously (and just them now)
 987          * i think the first if () needs removing totally, or? -- w00t
 988          */
 989         if (this->registered != REG_ALL)
 990         {
 991                 int MOD_RESULT = 0;
 992
 993                 this->InvalidateCache();
 994
 995                 FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
 996
 997                 if (MOD_RESULT)
 998                 {
 999                         ServerInstance->stats->statsCollisions++;
1000                         return false;
1001                 }
1002
1003                 if (ServerInstance->XLines->MatchesLine("Q",newnick))
1004                 {
1005                         ServerInstance->stats->statsCollisions++;
1006                         return false;
1007                 }
1008         }
1009         else
1010         {
1011                 std::deque<classbase*> dummy;
1012                 Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1013                 if (nickhandler) // wtfbbq, when would this not be here
1014                 {
1015                         nickhandler->HandleInternal(1, dummy);
1016                         bool result = (ServerInstance->Parser->CallHandler("NICK", &newnick, 1, this) == CMD_SUCCESS);
1017                         nickhandler->HandleInternal(0, dummy);
1018                         return result;
1019                 }
1020         }
1021
1022         // Unreachable.
1023         return false;
1024 }
1025
1026 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1027 {
1028         this->cachedip = "";
1029
1030         switch (protocol_family)
1031         {
1032 #ifdef SUPPORT_IP6LINKS
1033                 case AF_INET6:
1034                 {
1035                         sockaddr_in6* sin = new sockaddr_in6;
1036                         sin->sin6_family = AF_INET6;
1037                         sin->sin6_port = port;
1038                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1039                         this->ip = (sockaddr*)sin;
1040                 }
1041                 break;
1042 #endif
1043                 case AF_INET:
1044                 {
1045                         sockaddr_in* sin = new sockaddr_in;
1046                         sin->sin_family = AF_INET;
1047                         sin->sin_port = port;
1048                         inet_pton(AF_INET, sip, &sin->sin_addr);
1049                         this->ip = (sockaddr*)sin;
1050                 }
1051                 break;
1052                 default:
1053                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1054                 break;
1055         }
1056 }
1057
1058 int User::GetPort()
1059 {
1060         if (this->ip == NULL)
1061                 return 0;
1062
1063         switch (this->GetProtocolFamily())
1064         {
1065 #ifdef SUPPORT_IP6LINKS
1066                 case AF_INET6:
1067                 {
1068                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1069                         return sin->sin6_port;
1070                 }
1071                 break;
1072 #endif
1073                 case AF_INET:
1074                 {
1075                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1076                         return sin->sin_port;
1077                 }
1078                 break;
1079                 default:
1080                 break;
1081         }
1082         return 0;
1083 }
1084
1085 int User::GetProtocolFamily()
1086 {
1087         if (this->ip == NULL)
1088                 return 0;
1089
1090         sockaddr_in* sin = (sockaddr_in*)this->ip;
1091         return sin->sin_family;
1092 }
1093
1094 /*
1095  * XXX the duplication here is horrid..
1096  * do we really need two methods doing essentially the same thing?
1097  */
1098 const char* User::GetIPString()
1099 {
1100         static char buf[1024];
1101
1102         if (this->ip == NULL)
1103                 return "";
1104
1105         if (!this->cachedip.empty())
1106                 return this->cachedip.c_str();
1107
1108         switch (this->GetProtocolFamily())
1109         {
1110 #ifdef SUPPORT_IP6LINKS
1111                 case AF_INET6:
1112                 {
1113                         static char temp[1024];
1114
1115                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1116                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1117                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1118                         if (*buf == ':')
1119                         {
1120                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1121                                 *temp = '0';
1122                                 this->cachedip = temp;
1123                                 return temp;
1124                         }
1125
1126                         this->cachedip = buf;
1127                         return buf;
1128                 }
1129                 break;
1130 #endif
1131                 case AF_INET:
1132                 {
1133                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1134                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1135                         this->cachedip = buf;
1136                         return buf;
1137                 }
1138                 break;
1139                 default:
1140                 break;
1141         }
1142
1143         // Unreachable, probably
1144         return "";
1145 }
1146
1147 /** NOTE: We cannot pass a const reference to this method.
1148  * The string is changed by the workings of the method,
1149  * so that if we pass const ref, we end up copying it to
1150  * something we can change anyway. Makes sense to just let
1151  * the compiler do that copy for us.
1152  */
1153 void User::Write(std::string text)
1154 {
1155         if (!ServerInstance->SE->BoundsCheckFd(this))
1156                 return;
1157
1158         try
1159         {
1160                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1161                 text.append("\r\n");
1162         }
1163         catch (...)
1164         {
1165                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1166                 return;
1167         }
1168
1169         if (this->io)
1170         {
1171                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1172                  * implement their own buffering mechanisms
1173                  */
1174                 try
1175                 {
1176                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1177                 }
1178                 catch (CoreException& modexcept)
1179                 {
1180                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1181                 }
1182         }
1183         else
1184         {
1185                 this->AddWriteBuf(text);
1186         }
1187         ServerInstance->stats->statsSent += text.length();
1188         this->ServerInstance->SE->WantWrite(this);
1189 }
1190
1191 /** Write()
1192  */
1193 void User::Write(const char *text, ...)
1194 {
1195         va_list argsPtr;
1196         char textbuffer[MAXBUF];
1197
1198         va_start(argsPtr, text);
1199         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1200         va_end(argsPtr);
1201
1202         this->Write(std::string(textbuffer));
1203 }
1204
1205 void User::WriteServ(const std::string& text)
1206 {
1207         char textbuffer[MAXBUF];
1208
1209         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1210         this->Write(std::string(textbuffer));
1211 }
1212
1213 /** WriteServ()
1214  *  Same as Write(), except `text' is prefixed with `:server.name '.
1215  */
1216 void User::WriteServ(const char* text, ...)
1217 {
1218         va_list argsPtr;
1219         char textbuffer[MAXBUF];
1220
1221         va_start(argsPtr, text);
1222         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1223         va_end(argsPtr);
1224
1225         this->WriteServ(std::string(textbuffer));
1226 }
1227
1228
1229 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1230 {
1231         va_list argsPtr;
1232         char textbuffer[MAXBUF];
1233
1234         va_start(argsPtr, text);
1235         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1236         va_end(argsPtr);
1237
1238         this->WriteNumeric(numeric, std::string(textbuffer));
1239 }
1240
1241 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1242 {
1243         char textbuffer[MAXBUF];
1244         int MOD_RESULT = 0;
1245
1246         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1247
1248         if (MOD_RESULT)
1249                 return;
1250
1251         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1252         this->Write(std::string(textbuffer));
1253 }
1254
1255 void User::WriteFrom(User *user, const std::string &text)
1256 {
1257         char tb[MAXBUF];
1258
1259         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1260
1261         this->Write(std::string(tb));
1262 }
1263
1264
1265 /* write text from an originating user to originating user */
1266
1267 void User::WriteFrom(User *user, const char* text, ...)
1268 {
1269         va_list argsPtr;
1270         char textbuffer[MAXBUF];
1271
1272         va_start(argsPtr, text);
1273         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1274         va_end(argsPtr);
1275
1276         this->WriteFrom(user, std::string(textbuffer));
1277 }
1278
1279
1280 /* write text to an destination user from a source user (e.g. user privmsg) */
1281
1282 void User::WriteTo(User *dest, const char *data, ...)
1283 {
1284         char textbuffer[MAXBUF];
1285         va_list argsPtr;
1286
1287         va_start(argsPtr, data);
1288         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1289         va_end(argsPtr);
1290
1291         this->WriteTo(dest, std::string(textbuffer));
1292 }
1293
1294 void User::WriteTo(User *dest, const std::string &data)
1295 {
1296         dest->WriteFrom(this, data);
1297 }
1298
1299
1300 void User::WriteCommon(const char* text, ...)
1301 {
1302         char textbuffer[MAXBUF];
1303         va_list argsPtr;
1304
1305         if (this->registered != REG_ALL)
1306                 return;
1307
1308         va_start(argsPtr, text);
1309         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1310         va_end(argsPtr);
1311
1312         this->WriteCommon(std::string(textbuffer));
1313 }
1314
1315 void User::WriteCommon(const std::string &text)
1316 {
1317         bool sent_to_at_least_one = false;
1318         char tb[MAXBUF];
1319
1320         if (this->registered != REG_ALL)
1321                 return;
1322
1323         uniq_id++;
1324
1325         /* We dont want to be doing this n times, just once */
1326         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1327         std::string out = tb;
1328
1329         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1330         {
1331                 CUList* ulist = v->first->GetUsers();
1332                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1333                 {
1334                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1335                         {
1336                                 already_sent[i->first->fd] = uniq_id;
1337                                 i->first->Write(out);
1338                                 sent_to_at_least_one = true;
1339                         }
1340                 }
1341         }
1342
1343         /*
1344          * if the user was not in any channels, no users will receive the text. Make sure the user
1345          * receives their OWN message for WriteCommon
1346          */
1347         if (!sent_to_at_least_one)
1348         {
1349                 this->Write(std::string(tb));
1350         }
1351 }
1352
1353
1354 /* write a formatted string to all users who share at least one common
1355  * channel, NOT including the source user e.g. for use in QUIT
1356  */
1357
1358 void User::WriteCommonExcept(const char* text, ...)
1359 {
1360         char textbuffer[MAXBUF];
1361         va_list argsPtr;
1362
1363         va_start(argsPtr, text);
1364         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1365         va_end(argsPtr);
1366
1367         this->WriteCommonExcept(std::string(textbuffer));
1368 }
1369
1370 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1371 {
1372         char tb1[MAXBUF];
1373         char tb2[MAXBUF];
1374
1375         if (this->registered != REG_ALL)
1376                 return;
1377
1378         uniq_id++;
1379         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1380         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1381         std::string out1 = tb1;
1382         std::string out2 = tb2;
1383
1384         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1385         {
1386                 CUList *ulist = v->first->GetUsers();
1387                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1388                 {
1389                         if (this != i->first)
1390                         {
1391                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1392                                 {
1393                                         already_sent[i->first->fd] = uniq_id;
1394                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1395                                 }
1396                         }
1397                 }
1398         }
1399 }
1400
1401 void User::WriteCommonExcept(const std::string &text)
1402 {
1403         char tb1[MAXBUF];
1404         std::string out1;
1405
1406         if (this->registered != REG_ALL)
1407                 return;
1408
1409         uniq_id++;
1410         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1411         out1 = tb1;
1412
1413         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1414         {
1415                 CUList *ulist = v->first->GetUsers();
1416                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1417                 {
1418                         if (this != i->first)
1419                         {
1420                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1421                                 {
1422                                         already_sent[i->first->fd] = uniq_id;
1423                                         i->first->Write(out1);
1424                                 }
1425                         }
1426                 }
1427         }
1428
1429 }
1430
1431 void User::WriteWallOps(const std::string &text)
1432 {
1433         if (!IS_OPER(this) && IS_LOCAL(this))
1434                 return;
1435
1436         std::string wallop("WALLOPS :");
1437         wallop.append(text);
1438
1439         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1440         {
1441                 User* t = *i;
1442                 if (t->IsModeSet('w'))
1443                         this->WriteTo(t,wallop);
1444         }
1445 }
1446
1447 void User::WriteWallOps(const char* text, ...)
1448 {
1449         char textbuffer[MAXBUF];
1450         va_list argsPtr;
1451
1452         va_start(argsPtr, text);
1453         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1454         va_end(argsPtr);
1455
1456         this->WriteWallOps(std::string(textbuffer));
1457 }
1458
1459 /* return 0 or 1 depending if users u and u2 share one or more common channels
1460  * (used by QUIT, NICK etc which arent channel specific notices)
1461  *
1462  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1463  * the first users channels then the second users channels within the outer loop,
1464  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1465  * all possible iterations). However this new function instead checks against the
1466  * channel's userlist in the inner loop which is a std::map<User*,User*>
1467  * and saves us time as we already know what pointer value we are after.
1468  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1469  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1470  */
1471 bool User::SharesChannelWith(User *other)
1472 {
1473         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1474                 return false;
1475
1476         /* Outer loop */
1477         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1478         {
1479                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1480                  * by replacing it with a map::find which *should* be more efficient
1481                  */
1482                 if (i->first->HasUser(other))
1483                         return true;
1484         }
1485         return false;
1486 }
1487
1488 bool User::ChangeName(const char* gecos)
1489 {
1490         if (!strcmp(gecos, this->fullname))
1491                 return true;
1492
1493         if (IS_LOCAL(this))
1494         {
1495                 int MOD_RESULT = 0;
1496                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1497                 if (MOD_RESULT)
1498                         return false;
1499                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1500         }
1501         strlcpy(this->fullname,gecos,MAXGECOS+1);
1502
1503         return true;
1504 }
1505
1506 bool User::ChangeDisplayedHost(const char* shost)
1507 {
1508         if (!strcmp(shost, this->dhost))
1509                 return true;
1510
1511         if (IS_LOCAL(this))
1512         {
1513                 int MOD_RESULT = 0;
1514                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1515                 if (MOD_RESULT)
1516                         return false;
1517                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1518         }
1519
1520         if (this->ServerInstance->Config->CycleHosts)
1521                 this->WriteCommonExcept("QUIT :Changing hosts");
1522
1523         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1524         strlcpy(this->dhost,shost,64);
1525
1526         this->InvalidateCache();
1527
1528         if (this->ServerInstance->Config->CycleHosts)
1529         {
1530                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1531                 {
1532                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1533                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1534                         if (n.length() > 0)
1535                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1536                 }
1537         }
1538
1539         if (IS_LOCAL(this))
1540                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick,this->dhost);
1541
1542         return true;
1543 }
1544
1545 bool User::ChangeIdent(const char* newident)
1546 {
1547         if (!strcmp(newident, this->ident))
1548                 return true;
1549
1550         if (this->ServerInstance->Config->CycleHosts)
1551                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1552
1553         strlcpy(this->ident, newident, IDENTMAX+1);
1554
1555         this->InvalidateCache();
1556
1557         if (this->ServerInstance->Config->CycleHosts)
1558         {
1559                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1560                 {
1561                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1562                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1563                         if (n.length() > 0)
1564                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1565                 }
1566         }
1567
1568         return true;
1569 }
1570
1571 void User::SendAll(const char* command, const char* text, ...)
1572 {
1573         char textbuffer[MAXBUF];
1574         char formatbuffer[MAXBUF];
1575         va_list argsPtr;
1576
1577         va_start(argsPtr, text);
1578         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1579         va_end(argsPtr);
1580
1581         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1582         std::string fmt = formatbuffer;
1583
1584         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1585         {
1586                 (*i)->Write(fmt);
1587         }
1588 }
1589
1590
1591 std::string User::ChannelList(User* source)
1592 {
1593         std::string list;
1594
1595         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1596         {
1597                 /* If the target is the same as the sender, let them see all their channels.
1598                  * If the channel is NOT private/secret OR the user shares a common channel
1599                  * If the user is an oper, and the <options:operspywhois> option is set.
1600                  */
1601                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1602                 {
1603                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1604                 }
1605         }
1606
1607         return list;
1608 }
1609
1610 void User::SplitChanList(User* dest, const std::string &cl)
1611 {
1612         std::string line;
1613         std::ostringstream prefix;
1614         std::string::size_type start, pos, length;
1615
1616         prefix << this->nick << " " << dest->nick << " :";
1617         line = prefix.str();
1618         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1619
1620         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1621         {
1622                 length = (pos == std::string::npos) ? cl.length() : pos;
1623
1624                 if (line.length() + namelen + length - start > 510)
1625                 {
1626                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1627                         line = prefix.str();
1628                 }
1629
1630                 if(pos == std::string::npos)
1631                 {
1632                         line.append(cl.substr(start, length - start));
1633                         break;
1634                 }
1635                 else
1636                 {
1637                         line.append(cl.substr(start, length - start + 1));
1638                 }
1639         }
1640
1641         if (line.length())
1642         {
1643                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1644         }
1645 }
1646
1647 unsigned int User::GetMaxChans()
1648 {
1649         return this->MaxChans;
1650 }
1651
1652
1653 /*
1654  * Sets a user's connection class.
1655  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1656  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1657  * then their ip will be taken as 'priority' anyway, so for example,
1658  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1659  */
1660 ConnectClass* User::SetClass(const std::string &explicit_name)
1661 {
1662         ConnectClass *found = NULL;
1663
1664         if (!IS_LOCAL(this))
1665                 return NULL;
1666
1667         if (!explicit_name.empty())
1668         {
1669                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1670                 {
1671                         ConnectClass* c = *i;
1672
1673                         if (explicit_name == c->GetName() && !c->GetDisabled())
1674                         {
1675                                 found = c;
1676                         }
1677                 }
1678         }
1679         else
1680         {
1681                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1682                 {
1683                         ConnectClass* c = *i;
1684
1685                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1686                         {
1687                                 if (c->GetPort())
1688                                 {
1689                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1690                                         {
1691                                                 found = c;
1692                                         }
1693                                         else
1694                                                 continue;
1695                                 }
1696                                 else
1697                                 {
1698                                         if (!c->GetDisabled())
1699                                                 found = c;
1700                                 }
1701                         }
1702                 }
1703         }
1704
1705         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1706         if (found)
1707         {
1708                 /* deny change if change will take class over the limit */
1709                 if (found->limit && (found->RefCount + 1 >= found->limit))
1710                 {
1711                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", found->limit);
1712                         return this->MyClass;
1713                 }
1714
1715                 /* should always be valid, but just in case .. */
1716                 if (this->MyClass)
1717                 {
1718                         if (found == this->MyClass) // no point changing this shit :P
1719                                 return this->MyClass;
1720                         this->MyClass->RefCount--;
1721                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1722                 }
1723
1724                 this->MyClass = found;
1725                 this->MyClass->RefCount++;
1726                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1727         }
1728
1729         return this->MyClass;
1730 }
1731
1732 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1733  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1734  * then their ip will be taken as 'priority' anyway, so for example,
1735  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1736  */
1737 ConnectClass* User::GetClass()
1738 {
1739         return this->MyClass;
1740 }
1741
1742 void User::PurgeEmptyChannels()
1743 {
1744         std::vector<Channel*> to_delete;
1745
1746         // firstly decrement the count on each channel
1747         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1748         {
1749                 f->first->RemoveAllPrefixes(this);
1750                 if (f->first->DelUser(this) == 0)
1751                 {
1752                         /* No users left in here, mark it for deletion */
1753                         try
1754                         {
1755                                 to_delete.push_back(f->first);
1756                         }
1757                         catch (...)
1758                         {
1759                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1760                         }
1761                 }
1762         }
1763
1764         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1765         {
1766                 Channel* thischan = *n;
1767                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1768                 if (i2 != ServerInstance->chanlist->end())
1769                 {
1770                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1771                         delete i2->second;
1772                         ServerInstance->chanlist->erase(i2);
1773                         this->chans.erase(*n);
1774                 }
1775         }
1776
1777         this->UnOper();
1778 }
1779
1780 void User::ShowMOTD()
1781 {
1782         if (!ServerInstance->Config->MOTD.size())
1783         {
1784                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick);
1785                 return;
1786         }
1787         this->WriteNumeric(375, "%s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1788
1789         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1790                 this->WriteNumeric(372, "%s :- %s",this->nick,i->c_str());
1791
1792         this->WriteNumeric(376, "%s :End of message of the day.", this->nick);
1793 }
1794
1795 void User::ShowRULES()
1796 {
1797         if (!ServerInstance->Config->RULES.size())
1798         {
1799                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick);
1800                 return;
1801         }
1802
1803         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1804
1805         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1806                 this->WriteNumeric(232, "%s :- %s",this->nick,i->c_str());
1807
1808         this->WriteNumeric(309, "%s :End of RULES command.",this->nick);
1809 }
1810
1811 void User::HandleEvent(EventType et, int errornum)
1812 {
1813         if (this->quitting) // drop everything, user is due to be quit
1814                 return;
1815
1816         /* WARNING: May delete this user! */
1817         int thisfd = this->GetFd();
1818
1819         try
1820         {
1821                 switch (et)
1822                 {
1823                         case EVENT_READ:
1824                                 ServerInstance->ProcessUser(this);
1825                         break;
1826                         case EVENT_WRITE:
1827                                 this->FlushWriteBuf();
1828                         break;
1829                         case EVENT_ERROR:
1830                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1831                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1832                         break;
1833                 }
1834         }
1835         catch (...)
1836         {
1837                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1838         }
1839
1840         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1841         if ((ServerInstance->SE->GetRef(thisfd) == this))
1842         {
1843                 if (!WriteError.empty())
1844                 {
1845                         User::QuitUser(ServerInstance, this, GetWriteError());
1846                 }
1847         }
1848 }
1849
1850 void User::SetOperQuit(const std::string &oquit)
1851 {
1852         operquitmsg = oquit;
1853 }
1854
1855 const char* User::GetOperQuit()
1856 {
1857         return operquitmsg.c_str();
1858 }
1859
1860 void User::IncreasePenalty(int increase)
1861 {
1862         this->Penalty += increase;
1863 }
1864
1865 void User::DecreasePenalty(int decrease)
1866 {
1867         this->Penalty -= decrease;
1868 }
1869
1870 VisData::VisData()
1871 {
1872 }
1873
1874 VisData::~VisData()
1875 {
1876 }
1877
1878 bool VisData::VisibleTo(User* user)
1879 {
1880         return true;
1881 }
1882