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 /* XXX: Used for speeding up WriteCommon operations */
  25 unsigned long uniq_id = 1;
  26
  27 static unsigned long* already_sent = NULL;
  28
  29
  30 void InitializeAlreadySent(SocketEngine* SE)
  31 {
  32         already_sent = new unsigned long[SE->GetMaxFds()];
  33         memset(already_sent, 0, SE->GetMaxFds() * sizeof(unsigned long));
  34 }
  35
  36
  37 std::string User::ProcessNoticeMasks(const char *sm)
  38 {
  39         bool adding = true, oldadding = false;
  40         const char *c = sm;
  41         std::string output;
  42
  43         while (c && *c)
  44         {
  45                 switch (*c)
  46                 {
  47                         case '+':
  48                                 adding = true;
  49                         break;
  50                         case '-':
  51                                 adding = false;
  52                         break;
  53                         case '*':
  54                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  55                                 {
  56                                         if (ServerInstance->SNO->IsEnabled(d))
  57                                         {
  58                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  59                                                 {
  60                                                         if ((oldadding != adding) || (!output.length()))
  61                                                                 output += (adding ? '+' : '-');
  62
  63                                                         this->SetNoticeMask(d, adding);
  64
  65                                                         output += d;
  66                                                 }
  67                                         }
  68                                         oldadding = adding;
  69                                 }
  70                         break;
  71                         default:
  72                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  73                                 {
  74                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  75                                         {
  76                                                 if ((oldadding != adding) || (!output.length()))
  77                                                         output += (adding ? '+' : '-');
  78
  79                                                 this->SetNoticeMask(*c, adding);
  80
  81                                                 output += *c;
  82                                         }
  83                                 }
  84                                 else
  85                                         this->WriteNumeric(501, "%s %c :is unknown snomask char to me", this->nick, *c);
  86
  87                                 oldadding = adding;
  88                         break;
  89                 }
  90
  91                 *c++;
  92         }
  93
  94         return output;
  95 }
  96
  97 void User::StartDNSLookup()
  98 {
  99         try
 100         {
 101                 bool cached;
 102                 const char* sip = this->GetIPString(false);
 103
 104                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
 105                 if (!strncmp(sip, "0::ffff:", 8))
 106                         res_reverse = new UserResolver(this->ServerInstance, this, sip + 8, DNS_QUERY_PTR4, cached);
 107                 else
 108                         res_reverse = new UserResolver(this->ServerInstance, this, sip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 109
 110                 this->ServerInstance->AddResolver(res_reverse, cached);
 111         }
 112         catch (CoreException& e)
 113         {
 114                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 115         }
 116 }
 117
 118 bool User::IsNoticeMaskSet(unsigned char sm)
 119 {
 120         return (snomasks[sm-65]);
 121 }
 122
 123 void User::SetNoticeMask(unsigned char sm, bool value)
 124 {
 125         snomasks[sm-65] = value;
 126 }
 127
 128 const char* User::FormatNoticeMasks()
 129 {
 130         static char data[MAXBUF];
 131         int offset = 0;
 132
 133         for (int n = 0; n < 64; n++)
 134         {
 135                 if (snomasks[n])
 136                         data[offset++] = n+65;
 137         }
 138
 139         data[offset] = 0;
 140         return data;
 141 }
 142
 143
 144
 145 bool User::IsModeSet(unsigned char m)
 146 {
 147         return (modes[m-65]);
 148 }
 149
 150 void User::SetMode(unsigned char m, bool value)
 151 {
 152         modes[m-65] = value;
 153 }
 154
 155 const char* User::FormatModes()
 156 {
 157         static char data[MAXBUF];
 158         int offset = 0;
 159         for (int n = 0; n < 64; n++)
 160         {
 161                 if (modes[n])
 162                         data[offset++] = n+65;
 163         }
 164         data[offset] = 0;
 165         return data;
 166 }
 167
 168 void User::DecrementModes()
 169 {
 170         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 171         for (unsigned char n = 'A'; n <= 'z'; n++)
 172         {
 173                 if (modes[n-65])
 174                 {
 175                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 176                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 177                         if (mh)
 178                         {
 179                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 180                                 mh->ChangeCount(-1);
 181                         }
 182                 }
 183         }
 184 }
 185
 186 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 187 {
 188         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 189         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 190         reset_due = ServerInstance->Time();
 191         age = ServerInstance->Time();
 192         Penalty = 0;
 193         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 194         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 195         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 196         fd = -1;
 197         recvq.clear();
 198         sendq.clear();
 199         WriteError.clear();
 200         res_forward = res_reverse = NULL;
 201         Visibility = NULL;
 202         ip = NULL;
 203         MyClass = NULL;
 204         io = NULL;
 205         AllowedUserModes = NULL;
 206         AllowedChanModes = NULL;
 207         AllowedOperCommands = NULL;
 208         chans.clear();
 209         invites.clear();
 210         memset(modes,0,sizeof(modes));
 211         memset(snomasks,0,sizeof(snomasks));
 212         /* Invalidate cache */
 213         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 214
 215         if (uid.empty())
 216                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 217         else
 218                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 219
 220         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 221
 222         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 223         if (finduuid == Instance->Users->uuidlist->end())
 224                 (*Instance->Users->uuidlist)[uuid] = this;
 225         else
 226                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 227 }
 228
 229 User::~User()
 230 {
 231         /* NULL for remote users :) */
 232         if (this->MyClass)
 233         {
 234                 this->MyClass->RefCount--;
 235                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %lu", this->MyClass->RefCount);
 236         }
 237         if (this->AllowedOperCommands)
 238         {
 239                 delete AllowedOperCommands;
 240                 AllowedOperCommands = NULL;
 241         }
 242
 243         if (this->AllowedUserModes)
 244         {
 245                 delete[] AllowedUserModes;
 246                 AllowedUserModes = NULL;
 247         }
 248
 249         if (this->AllowedChanModes)
 250         {
 251                 delete[] AllowedChanModes;
 252                 AllowedChanModes = NULL;
 253         }
 254
 255         this->InvalidateCache();
 256         this->DecrementModes();
 257
 258         if (ip)
 259         {
 260                 ServerInstance->Users->RemoveCloneCounts(this);
 261
 262                 if (this->GetProtocolFamily() == AF_INET)
 263                 {
 264                         delete (sockaddr_in*)ip;
 265                 }
 266 #ifdef SUPPORT_IP6LINKS
 267                 else
 268                 {
 269                         delete (sockaddr_in6*)ip;
 270                 }
 271 #endif
 272         }
 273
 274         ServerInstance->Users->uuidlist->erase(uuid);
 275 }
 276
 277 char* User::MakeHost()
 278 {
 279         if (this->cached_makehost)
 280                 return this->cached_makehost;
 281
 282         char nhost[MAXBUF];
 283         /* This is much faster than snprintf */
 284         char* t = nhost;
 285         for(char* n = ident; *n; n++)
 286                 *t++ = *n;
 287         *t++ = '@';
 288         for(char* n = host; *n; n++)
 289                 *t++ = *n;
 290         *t = 0;
 291
 292         this->cached_makehost = strdup(nhost);
 293
 294         return this->cached_makehost;
 295 }
 296
 297 char* User::MakeHostIP()
 298 {
 299         if (this->cached_hostip)
 300                 return this->cached_hostip;
 301
 302         char ihost[MAXBUF];
 303         /* This is much faster than snprintf */
 304         char* t = ihost;
 305         for(char* n = ident; *n; n++)
 306                 *t++ = *n;
 307         *t++ = '@';
 308         for(const char* n = this->GetIPString(); *n; n++)
 309                 *t++ = *n;
 310         *t = 0;
 311
 312         this->cached_hostip = strdup(ihost);
 313
 314         return this->cached_hostip;
 315 }
 316
 317 void User::CloseSocket()
 318 {
 319         if (this->fd > -1)
 320         {
 321                 ServerInstance->SE->Shutdown(this, 2);
 322                 ServerInstance->SE->Close(this);
 323         }
 324 }
 325
 326 char* User::GetFullHost()
 327 {
 328         if (this->cached_fullhost)
 329                 return this->cached_fullhost;
 330
 331         char result[MAXBUF];
 332         char* t = result;
 333         for(char* n = nick; *n; n++)
 334                 *t++ = *n;
 335         *t++ = '!';
 336         for(char* n = ident; *n; n++)
 337                 *t++ = *n;
 338         *t++ = '@';
 339         for(char* n = dhost; *n; n++)
 340                 *t++ = *n;
 341         *t = 0;
 342
 343         this->cached_fullhost = strdup(result);
 344
 345         return this->cached_fullhost;
 346 }
 347
 348 char* User::MakeWildHost()
 349 {
 350         static char nresult[MAXBUF];
 351         char* t = nresult;
 352         *t++ = '*';     *t++ = '!';
 353         *t++ = '*';     *t++ = '@';
 354         for(char* n = dhost; *n; n++)
 355                 *t++ = *n;
 356         *t = 0;
 357         return nresult;
 358 }
 359
 360 int User::ReadData(void* buffer, size_t size)
 361 {
 362         if (IS_LOCAL(this))
 363         {
 364 #ifndef WIN32
 365                 return read(this->fd, buffer, size);
 366 #else
 367                 return recv(this->fd, (char*)buffer, size, 0);
 368 #endif
 369         }
 370         else
 371                 return 0;
 372 }
 373
 374
 375 char* User::GetFullRealHost()
 376 {
 377         if (this->cached_fullrealhost)
 378                 return this->cached_fullrealhost;
 379
 380         char fresult[MAXBUF];
 381         char* t = fresult;
 382         for(char* n = nick; *n; n++)
 383                 *t++ = *n;
 384         *t++ = '!';
 385         for(char* n = ident; *n; n++)
 386                 *t++ = *n;
 387         *t++ = '@';
 388         for(char* n = host; *n; n++)
 389                 *t++ = *n;
 390         *t = 0;
 391
 392         this->cached_fullrealhost = strdup(fresult);
 393
 394         return this->cached_fullrealhost;
 395 }
 396
 397 bool User::IsInvited(const irc::string &channel)
 398 {
 399         time_t now = time(NULL);
 400         InvitedList::iterator safei;
 401         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 402         {
 403                 if (channel == i->first)
 404                 {
 405                         if (i->second != 0 && now > i->second)
 406                         {
 407                                 /* Expired invite, remove it. */
 408                                 safei = i;
 409                                 --i;
 410                                 invites.erase(safei);
 411                                 continue;
 412                         }
 413                         return true;
 414                 }
 415         }
 416         return false;
 417 }
 418
 419 InvitedList* User::GetInviteList()
 420 {
 421         time_t now = time(NULL);
 422         /* Weed out expired invites here. */
 423         InvitedList::iterator safei;
 424         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 425         {
 426                 if (i->second != 0 && now > i->second)
 427                 {
 428                         /* Expired invite, remove it. */
 429                         safei = i;
 430                         --i;
 431                         invites.erase(safei);
 432                 }
 433         }
 434         return &invites;
 435 }
 436
 437 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 438 {
 439         time_t now = time(NULL);
 440         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 441         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 442         {
 443                 if (channel == i->first)
 444                 {
 445                         if (i->second != 0 && invtimeout > i->second)
 446                         {
 447                                 i->second = invtimeout;
 448                         }
 449                 }
 450         }
 451         invites.push_back(std::make_pair(channel, invtimeout));
 452 }
 453
 454 void User::RemoveInvite(const irc::string &channel)
 455 {
 456         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 457         {
 458                 if (channel == i->first)
 459                 {
 460                         invites.erase(i);
 461                         return;
 462                 }
 463         }
 464 }
 465
 466 bool User::HasModePermission(unsigned char mode, ModeType type)
 467 {
 468         if (!IS_LOCAL(this))
 469                 return true;
 470
 471         if (!IS_OPER(this))
 472                 return false;
 473
 474         if (!AllowedUserModes || !AllowedChanModes)
 475                 return false;
 476
 477         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 478
 479 }
 480
 481 bool User::HasPermission(const std::string &command)
 482 {
 483         /*
 484          * users on remote servers can completely bypass all permissions based checks.
 485          * This prevents desyncs when one server has different type/class tags to another.
 486          * That having been said, this does open things up to the possibility of source changes
 487          * allowing remote kills, etc - but if they have access to the src, they most likely have
 488          * access to the conf - so it's an end to a means either way.
 489          */
 490         if (!IS_LOCAL(this))
 491                 return true;
 492
 493         // are they even an oper at all?
 494         if (!IS_OPER(this))
 495         {
 496                 return false;
 497         }
 498
 499         if (!AllowedOperCommands)
 500                 return false;
 501
 502         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 503                 return true;
 504         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 505                 return true;
 506
 507         return false;
 508 }
 509
 510 bool User::AddBuffer(const std::string &a)
 511 {
 512         std::string::size_type start = 0;
 513         std::string::size_type i = a.find('\r');
 514
 515         /*
 516          * The old implementation here took a copy, and rfind() on \r, removing as it found them, before
 517          * copying a second time onto the recvq. That's ok, but involves three copies minimum (recv() to buffer,
 518          * buffer to here, here to recvq) - The new method now copies twice (recv() to buffer, buffer to recvq).
 519          *
 520          * We use find() instead of rfind() for clarity, however unlike the old code, our scanning of the string is
 521          * contiguous: as we specify a startpoint, we never see characters we have scanned previously, making this
 522          * marginally faster in cases with a number of \r hidden early on in the buffer.
 523          *
 524          * How it works:
 525          * Start at first pos of string, find first \r, append everything in the chunk (excluding \r) to recvq. Set
 526          * i ahead of the \r, search for next \r, add next chunk to buffer... repeat.
 527          *              -- w00t (7 may, 2008)
 528          */
 529         if (i == std::string::npos)
 530         {
 531                 // no \r that we need to dance around, just add to buffer
 532                 recvq.append(a);
 533         }
 534         else
 535         {
 536                 ServerInstance->Logs->Log("recvqdebug", DEBUG, "Current recvq size is %d and I got called with a string of %d\n(%s)", recvq.length(), a.length(), a.c_str());
 537
 538                 // While we can find the end of a chunk to add
 539                 while (i != std::string::npos)
 540                 {
 541                         // Append the chunk that we have
 542                         recvq.append(a, start, (i - start));
 543                         ServerInstance->Logs->Log("recvqdebug", DEBUG, "Appended a chunk, length is now %d", recvq.length());
 544
 545                         // Start looking for the next one
 546                         start = i + 1;
 547                         i = a.find('\r', start);
 548                 }
 549
 550                 if (start != a.length())
 551                 {
 552                         /*
 553                          * This is here to catch a corner case when we get something like:
 554                          * NICK w0
 555                          * 0t\r\nU
 556                          * SER ...
 557                          * in successive calls to us.
 558                          *
 559                          * Without this conditional, the 'U' on the second case will be dropped,
 560                          * which is most *certainly* not the behaviour we want!
 561                          *              -- w00t
 562                          */
 563                         ServerInstance->Logs->Log("recvqdebug", DEBUG, "*** ALERT *** start != a.length, we should probably add more");
 564                         recvq.append(a, start, (a.length() - start));
 565                 }
 566
 567                 ServerInstance->Logs->Log("recvqdebug", DEBUG, "Final recvq length is %d\n(%s)", recvq.length(), recvq.c_str());
 568         }
 569
 570         if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 571         {
 572                 this->SetWriteError("RecvQ exceeded");
 573                 ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %lu exceeds connect class maximum of %lu",this->nick,(unsigned long int)recvq.length(),this->MyClass->GetRecvqMax());
 574                 return false;
 575         }
 576
 577         return true;
 578 }
 579
 580 bool User::BufferIsReady()
 581 {
 582         return (recvq.find('\n') != std::string::npos);
 583 }
 584
 585 void User::ClearBuffer()
 586 {
 587         recvq.clear();
 588 }
 589
 590 std::string User::GetBuffer()
 591 {
 592         try
 593         {
 594                 if (recvq.empty())
 595                         return "";
 596
 597                 /* Strip any leading \r or \n off the string.
 598                  * Usually there are only one or two of these,
 599                  * so its is computationally cheap to do.
 600                  */
 601                 std::string::iterator t = recvq.begin();
 602                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 603                 {
 604                         recvq.erase(t);
 605                         t = recvq.begin();
 606                 }
 607
 608                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 609                 {
 610                         /* Find the first complete line, return it as the
 611                          * result, and leave the recvq as whats left
 612                          */
 613                         if (*x == '\n')
 614                         {
 615                                 std::string ret = std::string(recvq.begin(), x);
 616                                 recvq.erase(recvq.begin(), x + 1);
 617                                 return ret;
 618                         }
 619                 }
 620                 return "";
 621         }
 622
 623         catch (...)
 624         {
 625                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 626                 return "";
 627         }
 628 }
 629
 630 void User::AddWriteBuf(const std::string &data)
 631 {
 632         if (*this->GetWriteError())
 633                 return;
 634
 635         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 636         {
 637                 /*
 638                  * Fix by brain - Set the error text BEFORE calling, because
 639                  * if we dont it'll recursively  call here over and over again trying
 640                  * to repeatedly add the text to the sendq!
 641                  */
 642                 this->SetWriteError("SendQ exceeded");
 643                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %lu exceeds connect class maximum of %lu",this->nick,(unsigned long int)sendq.length() + data.length(),this->MyClass->GetSendqMax());
 644                 return;
 645         }
 646
 647         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 648                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 649         else
 650                 sendq.append(data);
 651 }
 652
 653 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 654 void User::FlushWriteBuf()
 655 {
 656         try
 657         {
 658                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 659                 {
 660                         sendq.clear();
 661                 }
 662                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 663                 {
 664                         int old_sendq_length = sendq.length();
 665                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 666
 667                         if (n_sent == -1)
 668                         {
 669                                 if (errno == EAGAIN)
 670                                 {
 671                                         /* The socket buffer is full. This isnt fatal,
 672                                          * try again later.
 673                                          */
 674                                         this->ServerInstance->SE->WantWrite(this);
 675                                 }
 676                                 else
 677                                 {
 678                                         /* Fatal error, set write error and bail
 679                                          */
 680                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 681                                         return;
 682                                 }
 683                         }
 684                         else
 685                         {
 686                                 /* advance the queue */
 687                                 if (n_sent)
 688                                         this->sendq = this->sendq.substr(n_sent);
 689                                 /* update the user's stats counters */
 690                                 this->bytes_out += n_sent;
 691                                 this->cmds_out++;
 692                                 if (n_sent != old_sendq_length)
 693                                         this->ServerInstance->SE->WantWrite(this);
 694                         }
 695                 }
 696         }
 697
 698         catch (...)
 699         {
 700                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 701         }
 702
 703         if (this->sendq.empty())
 704         {
 705                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 706         }
 707 }
 708
 709 void User::SetWriteError(const std::string &error)
 710 {
 711         // don't try to set the error twice, its already set take the first string.
 712         if (this->WriteError.empty())
 713                 this->WriteError = error;
 714 }
 715
 716 const char* User::GetWriteError()
 717 {
 718         return this->WriteError.c_str();
 719 }
 720
 721 void User::Oper(const std::string &opertype, const std::string &opername)
 722 {
 723         char* mycmd;
 724         char* savept;
 725         char* savept2;
 726
 727         try
 728         {
 729                 this->modes[UM_OPERATOR] = 1;
 730                 this->WriteServ("MODE %s :+o", this->nick);
 731                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 732                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 733                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 734                 ServerInstance->Users->all_opers.push_back(this);
 735
 736                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 737                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 738                 {
 739
 740                         if (AllowedOperCommands)
 741                                 AllowedOperCommands->clear();
 742                         else
 743                                 AllowedOperCommands = new std::map<std::string, bool>;
 744
 745                         if (!AllowedChanModes)
 746                                 AllowedChanModes = new bool[64];
 747
 748                         if (!AllowedUserModes)
 749                                 AllowedUserModes = new bool[64];
 750
 751                         memset(AllowedUserModes, 0, 64);
 752                         memset(AllowedChanModes, 0, 64);
 753
 754                         char* Classes = strdup(iter_opertype->second);
 755                         char* myclass = strtok_r(Classes," ",&savept);
 756                         while (myclass)
 757                         {
 758                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 759                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 760                                 {
 761                                         char* CommandList = strdup(iter_operclass->second.commandlist);
 762                                         mycmd = strtok_r(CommandList," ",&savept2);
 763                                         while (mycmd)
 764                                         {
 765                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 766                                                 mycmd = strtok_r(NULL," ",&savept2);
 767                                         }
 768                                         free(CommandList);
 769                                         this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 770                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 771                                         {
 772                                                 if (*c == '*')
 773                                                 {
 774                                                         memset(this->AllowedUserModes, (int)(true), 64);
 775                                                 }
 776                                                 else
 777                                                 {
 778                                                         this->AllowedUserModes[*c - 'A'] = true;
 779                                                 }
 780                                         }
 781                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 782                                         {
 783                                                 if (*c == '*')
 784                                                 {
 785                                                         memset(this->AllowedChanModes, (int)(true), 64);
 786                                                 }
 787                                                 else
 788                                                 {
 789                                                         this->AllowedChanModes[*c - 'A'] = true;
 790                                                 }
 791                                         }
 792                                 }
 793                                 myclass = strtok_r(NULL," ",&savept);
 794                         }
 795                         free(Classes);
 796                 }
 797
 798                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 799         }
 800
 801         catch (...)
 802         {
 803                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 804         }
 805 }
 806
 807 void User::UnOper()
 808 {
 809         if (IS_OPER(this))
 810         {
 811                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 812                 std::string moderemove("-");
 813
 814                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 815                 {
 816                         if (letter != 'o')
 817                         {
 818                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 819                                 if (mh && mh->NeedsOper())
 820                                         moderemove += letter;
 821                         }
 822                 }
 823
 824                 std::vector<std::string> parameters;
 825                 parameters.push_back(this->nick);
 826                 parameters.push_back(moderemove);
 827
 828                 ServerInstance->Parser->CallHandler("MODE", parameters, this);
 829
 830                 /* unset their oper type (what IS_OPER checks), and remove +o */
 831                 *this->oper = 0;
 832                 this->modes[UM_OPERATOR] = 0;
 833
 834                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 835                 ServerInstance->Users->all_opers.remove(this);
 836
 837                 if (AllowedOperCommands)
 838                 {
 839                         delete AllowedOperCommands;
 840                         AllowedOperCommands = NULL;
 841                 }
 842                 if (AllowedUserModes)
 843                 {
 844                         delete[] AllowedUserModes;
 845                         AllowedUserModes = NULL;
 846                 }
 847                 if (AllowedChanModes)
 848                 {
 849                         delete[] AllowedChanModes;
 850                         AllowedChanModes = NULL;
 851                 }
 852
 853         }
 854 }
 855
 856 /* adds or updates an entry in the whowas list */
 857 void User::AddToWhoWas()
 858 {
 859         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 860         if (whowas_command)
 861         {
 862                 std::deque<classbase*> params;
 863                 params.push_back(this);
 864                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 865         }
 866 }
 867
 868 /*
 869  * Check class restrictions
 870  */
 871 void User::CheckClass()
 872 {
 873         ConnectClass* a = this->MyClass;
 874
 875         if ((!a) || (a->GetType() == CC_DENY))
 876         {
 877                 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
 878                 return;
 879         }
 880         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 881         {
 882                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 883                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 884                 return;
 885         }
 886         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 887         {
 888                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 889                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 890                 return;
 891         }
 892
 893         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 894         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 895         this->MaxChans = a->GetMaxChans();
 896 }
 897
 898 void User::CheckLines()
 899 {
 900         const char* check[] = { "G" , "K", NULL };
 901
 902         if (!this->exempt)
 903         {
 904                 for (int n = 0; check[n]; ++n)
 905                 {
 906                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 907
 908                         if (r)
 909                         {
 910                                 r->Apply(this);
 911                                 return;
 912                         }
 913                 }
 914         }
 915 }
 916
 917 void User::FullConnect()
 918 {
 919         ServerInstance->stats->statsConnects++;
 920         this->idle_lastmsg = ServerInstance->Time();
 921
 922         /*
 923          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 924          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 925          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 926          * Don't remove this! -- w00t
 927          */
 928         this->SetClass();
 929
 930         /* Check the password, if one is required by the user's connect class.
 931          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 932          */
 933         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 934         {
 935                 ServerInstance->Users->QuitUser(this, "Invalid password");
 936                 return;
 937         }
 938
 939         CheckLines();
 940
 941         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 942         this->WriteNumeric(001, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 943         this->WriteNumeric(002, "%s :Your host is %s, running version InspIRCd-1.2",this->nick,ServerInstance->Config->ServerName);
 944         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 945         this->WriteNumeric(004, "%s %s InspIRCd-1.2 %s %s %s", this->nick, ServerInstance->Config->ServerName, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 946
 947         ServerInstance->Config->Send005(this);
 948         this->WriteNumeric(42, "%s %s :your unique ID", this->nick, this->uuid);
 949
 950
 951         this->ShowMOTD();
 952
 953         /* Now registered */
 954         if (ServerInstance->Users->unregistered_count)
 955                 ServerInstance->Users->unregistered_count--;
 956
 957         /* Trigger LUSERS output, give modules a chance too */
 958         int MOD_RESULT = 0;
 959         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", std::vector<std::string>(), this, true, "LUSERS"));
 960         if (!MOD_RESULT)
 961                 ServerInstance->CallCommandHandler("LUSERS", std::vector<std::string>(), this);
 962
 963         /*
 964          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 965          * for a user that doesn't exist yet.
 966          */
 967         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 968
 969         this->registered = REG_ALL;
 970
 971         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 972
 973         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);
 974         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 975         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 976 }
 977
 978 /** User::UpdateNick()
 979  * re-allocates a nick in the user_hash after they change nicknames,
 980  * returns a pointer to the new user as it may have moved
 981  */
 982 User* User::UpdateNickHash(const char* New)
 983 {
 984         //user_hash::iterator newnick;
 985         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 986
 987         if (!strcasecmp(this->nick,New))
 988                 return oldnick->second;
 989
 990         if (oldnick == ServerInstance->Users->clientlist->end())
 991                 return NULL; /* doesnt exist */
 992
 993         User* olduser = oldnick->second;
 994         (*(ServerInstance->Users->clientlist))[New] = olduser;
 995         ServerInstance->Users->clientlist->erase(oldnick);
 996         return olduser;
 997 }
 998
 999 void User::InvalidateCache()
1000 {
1001         /* Invalidate cache */
1002         if (cached_fullhost)
1003                 free(cached_fullhost);
1004         if (cached_hostip)
1005                 free(cached_hostip);
1006         if (cached_makehost)
1007                 free(cached_makehost);
1008         if (cached_fullrealhost)
1009                 free(cached_fullrealhost);
1010         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
1011 }
1012
1013 bool User::ForceNickChange(const char* newnick)
1014 {
1015         int MOD_RESULT = 0;
1016
1017         this->InvalidateCache();
1018
1019         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1020
1021         if (MOD_RESULT)
1022         {
1023                 ServerInstance->stats->statsCollisions++;
1024                 return false;
1025         }
1026
1027         std::deque<classbase*> dummy;
1028         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1029         if (nickhandler) // wtfbbq, when would this not be here
1030         {
1031                 std::vector<std::string> parameters;
1032                 nickhandler->HandleInternal(1, dummy);
1033                 parameters.push_back(newnick);
1034                 bool result = (ServerInstance->Parser->CallHandler("NICK", parameters, this) == CMD_SUCCESS);
1035                 nickhandler->HandleInternal(0, dummy);
1036                 return result;
1037         }
1038
1039         // Unreachable, we hope
1040         return false;
1041 }
1042
1043 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1044 {
1045         this->cachedip = "";
1046
1047         switch (protocol_family)
1048         {
1049 #ifdef SUPPORT_IP6LINKS
1050                 case AF_INET6:
1051                 {
1052                         sockaddr_in6* sin = new sockaddr_in6;
1053                         sin->sin6_family = AF_INET6;
1054                         sin->sin6_port = port;
1055                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1056                         this->ip = (sockaddr*)sin;
1057                 }
1058                 break;
1059 #endif
1060                 case AF_INET:
1061                 {
1062                         sockaddr_in* sin = new sockaddr_in;
1063                         sin->sin_family = AF_INET;
1064                         sin->sin_port = port;
1065                         inet_pton(AF_INET, sip, &sin->sin_addr);
1066                         this->ip = (sockaddr*)sin;
1067                 }
1068                 break;
1069                 default:
1070                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1071                 break;
1072         }
1073 }
1074
1075 int User::GetPort()
1076 {
1077         if (this->ip == NULL)
1078                 return 0;
1079
1080         switch (this->GetProtocolFamily())
1081         {
1082 #ifdef SUPPORT_IP6LINKS
1083                 case AF_INET6:
1084                 {
1085                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1086                         return sin->sin6_port;
1087                 }
1088                 break;
1089 #endif
1090                 case AF_INET:
1091                 {
1092                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1093                         return sin->sin_port;
1094                 }
1095                 break;
1096                 default:
1097                 break;
1098         }
1099         return 0;
1100 }
1101
1102 int User::GetProtocolFamily()
1103 {
1104         if (this->ip == NULL)
1105                 return 0;
1106
1107         sockaddr_in* sin = (sockaddr_in*)this->ip;
1108         return sin->sin_family;
1109 }
1110
1111 /*
1112  * XXX the duplication here is horrid..
1113  * do we really need two methods doing essentially the same thing?
1114  */
1115 const char* User::GetIPString(bool translate4in6)
1116 {
1117         static char buf[1024];
1118
1119         if (this->ip == NULL)
1120                 return "";
1121
1122         if (!this->cachedip.empty())
1123                 return this->cachedip.c_str();
1124
1125         switch (this->GetProtocolFamily())
1126         {
1127 #ifdef SUPPORT_IP6LINKS
1128                 case AF_INET6:
1129                 {
1130                         static char temp[1024];
1131
1132                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1133                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1134                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1135                         if (*buf == ':')
1136                         {
1137                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1138                                 *temp = '0';
1139                                 if (translate4in6 && !strncmp(temp, "0::ffff:", 8))
1140                                 {
1141                                         this->cachedip = temp + 8;
1142                                         return temp + 8;
1143                                 }
1144
1145                                 this->cachedip = temp;
1146                                 return temp;
1147                         }
1148
1149                         this->cachedip = buf;
1150                         return buf;
1151                 }
1152                 break;
1153 #endif
1154                 case AF_INET:
1155                 {
1156                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1157                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1158                         this->cachedip = buf;
1159                         return buf;
1160                 }
1161                 break;
1162                 default:
1163                 break;
1164         }
1165
1166         // Unreachable, probably
1167         return "";
1168 }
1169
1170 /** NOTE: We cannot pass a const reference to this method.
1171  * The string is changed by the workings of the method,
1172  * so that if we pass const ref, we end up copying it to
1173  * something we can change anyway. Makes sense to just let
1174  * the compiler do that copy for us.
1175  */
1176 void User::Write(std::string text)
1177 {
1178         if (!ServerInstance->SE->BoundsCheckFd(this))
1179                 return;
1180
1181         try
1182         {
1183                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1184                 text.append("\r\n");
1185         }
1186         catch (...)
1187         {
1188                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1189                 return;
1190         }
1191
1192         if (this->io)
1193         {
1194                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1195                  * implement their own buffering mechanisms
1196                  */
1197                 try
1198                 {
1199                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1200                 }
1201                 catch (CoreException& modexcept)
1202                 {
1203                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1204                 }
1205         }
1206         else
1207         {
1208                 this->AddWriteBuf(text);
1209         }
1210         ServerInstance->stats->statsSent += text.length();
1211         this->ServerInstance->SE->WantWrite(this);
1212 }
1213
1214 /** Write()
1215  */
1216 void User::Write(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->Write(std::string(textbuffer));
1226 }
1227
1228 void User::WriteServ(const std::string& text)
1229 {
1230         char textbuffer[MAXBUF];
1231
1232         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1233         this->Write(std::string(textbuffer));
1234 }
1235
1236 /** WriteServ()
1237  *  Same as Write(), except `text' is prefixed with `:server.name '.
1238  */
1239 void User::WriteServ(const char* text, ...)
1240 {
1241         va_list argsPtr;
1242         char textbuffer[MAXBUF];
1243
1244         va_start(argsPtr, text);
1245         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1246         va_end(argsPtr);
1247
1248         this->WriteServ(std::string(textbuffer));
1249 }
1250
1251
1252 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1253 {
1254         va_list argsPtr;
1255         char textbuffer[MAXBUF];
1256
1257         va_start(argsPtr, text);
1258         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1259         va_end(argsPtr);
1260
1261         this->WriteNumeric(numeric, std::string(textbuffer));
1262 }
1263
1264 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1265 {
1266         char textbuffer[MAXBUF];
1267         int MOD_RESULT = 0;
1268
1269         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1270
1271         if (MOD_RESULT)
1272                 return;
1273
1274         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1275         this->Write(std::string(textbuffer));
1276 }
1277
1278 void User::WriteFrom(User *user, const std::string &text)
1279 {
1280         char tb[MAXBUF];
1281
1282         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1283
1284         this->Write(std::string(tb));
1285 }
1286
1287
1288 /* write text from an originating user to originating user */
1289
1290 void User::WriteFrom(User *user, const char* text, ...)
1291 {
1292         va_list argsPtr;
1293         char textbuffer[MAXBUF];
1294
1295         va_start(argsPtr, text);
1296         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1297         va_end(argsPtr);
1298
1299         this->WriteFrom(user, std::string(textbuffer));
1300 }
1301
1302
1303 /* write text to an destination user from a source user (e.g. user privmsg) */
1304
1305 void User::WriteTo(User *dest, const char *data, ...)
1306 {
1307         char textbuffer[MAXBUF];
1308         va_list argsPtr;
1309
1310         va_start(argsPtr, data);
1311         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1312         va_end(argsPtr);
1313
1314         this->WriteTo(dest, std::string(textbuffer));
1315 }
1316
1317 void User::WriteTo(User *dest, const std::string &data)
1318 {
1319         dest->WriteFrom(this, data);
1320 }
1321
1322
1323 void User::WriteCommon(const char* text, ...)
1324 {
1325         char textbuffer[MAXBUF];
1326         va_list argsPtr;
1327
1328         if (this->registered != REG_ALL)
1329                 return;
1330
1331         va_start(argsPtr, text);
1332         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1333         va_end(argsPtr);
1334
1335         this->WriteCommon(std::string(textbuffer));
1336 }
1337
1338 void User::WriteCommon(const std::string &text)
1339 {
1340         bool sent_to_at_least_one = false;
1341         char tb[MAXBUF];
1342
1343         if (this->registered != REG_ALL)
1344                 return;
1345
1346         uniq_id++;
1347
1348         if (!already_sent)
1349                 InitializeAlreadySent(ServerInstance->SE);
1350
1351         /* We dont want to be doing this n times, just once */
1352         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1353         std::string out = tb;
1354
1355         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1356         {
1357                 CUList* ulist = v->first->GetUsers();
1358                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1359                 {
1360                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1361                         {
1362                                 already_sent[i->first->fd] = uniq_id;
1363                                 i->first->Write(out);
1364                                 sent_to_at_least_one = true;
1365                         }
1366                 }
1367         }
1368
1369         /*
1370          * if the user was not in any channels, no users will receive the text. Make sure the user
1371          * receives their OWN message for WriteCommon
1372          */
1373         if (!sent_to_at_least_one)
1374         {
1375                 this->Write(std::string(tb));
1376         }
1377 }
1378
1379
1380 /* write a formatted string to all users who share at least one common
1381  * channel, NOT including the source user e.g. for use in QUIT
1382  */
1383
1384 void User::WriteCommonExcept(const char* text, ...)
1385 {
1386         char textbuffer[MAXBUF];
1387         va_list argsPtr;
1388
1389         va_start(argsPtr, text);
1390         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1391         va_end(argsPtr);
1392
1393         this->WriteCommonExcept(std::string(textbuffer));
1394 }
1395
1396 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1397 {
1398         char tb1[MAXBUF];
1399         char tb2[MAXBUF];
1400
1401         if (this->registered != REG_ALL)
1402                 return;
1403
1404         uniq_id++;
1405
1406         if (!already_sent)
1407                 InitializeAlreadySent(ServerInstance->SE);
1408
1409         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1410         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1411         std::string out1 = tb1;
1412         std::string out2 = tb2;
1413
1414         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1415         {
1416                 CUList *ulist = v->first->GetUsers();
1417                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1418                 {
1419                         if (this != i->first)
1420                         {
1421                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1422                                 {
1423                                         already_sent[i->first->fd] = uniq_id;
1424                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1425                                 }
1426                         }
1427                 }
1428         }
1429 }
1430
1431 void User::WriteCommonExcept(const std::string &text)
1432 {
1433         char tb1[MAXBUF];
1434         std::string out1;
1435
1436         if (this->registered != REG_ALL)
1437                 return;
1438
1439         uniq_id++;
1440
1441         if (!already_sent)
1442                 InitializeAlreadySent(ServerInstance->SE);
1443
1444         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1445         out1 = tb1;
1446
1447         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1448         {
1449                 CUList *ulist = v->first->GetUsers();
1450                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1451                 {
1452                         if (this != i->first)
1453                         {
1454                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1455                                 {
1456                                         already_sent[i->first->fd] = uniq_id;
1457                                         i->first->Write(out1);
1458                                 }
1459                         }
1460                 }
1461         }
1462
1463 }
1464
1465 void User::WriteWallOps(const std::string &text)
1466 {
1467         if (!IS_LOCAL(this))
1468                 return;
1469
1470         std::string wallop("WALLOPS :");
1471         wallop.append(text);
1472
1473         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1474         {
1475                 User* t = *i;
1476                 if (t->IsModeSet('w'))
1477                         this->WriteTo(t,wallop);
1478         }
1479 }
1480
1481 void User::WriteWallOps(const char* text, ...)
1482 {
1483         if (!IS_LOCAL(this))
1484                 return;
1485
1486         char textbuffer[MAXBUF];
1487         va_list argsPtr;
1488
1489         va_start(argsPtr, text);
1490         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1491         va_end(argsPtr);
1492
1493         this->WriteWallOps(std::string(textbuffer));
1494 }
1495
1496 /* return 0 or 1 depending if users u and u2 share one or more common channels
1497  * (used by QUIT, NICK etc which arent channel specific notices)
1498  *
1499  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1500  * the first users channels then the second users channels within the outer loop,
1501  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1502  * all possible iterations). However this new function instead checks against the
1503  * channel's userlist in the inner loop which is a std::map<User*,User*>
1504  * and saves us time as we already know what pointer value we are after.
1505  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1506  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1507  */
1508 bool User::SharesChannelWith(User *other)
1509 {
1510         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1511                 return false;
1512
1513         /* Outer loop */
1514         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1515         {
1516                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1517                  * by replacing it with a map::find which *should* be more efficient
1518                  */
1519                 if (i->first->HasUser(other))
1520                         return true;
1521         }
1522         return false;
1523 }
1524
1525 bool User::ChangeName(const char* gecos)
1526 {
1527         if (!strcmp(gecos, this->fullname))
1528                 return true;
1529
1530         if (IS_LOCAL(this))
1531         {
1532                 int MOD_RESULT = 0;
1533                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1534                 if (MOD_RESULT)
1535                         return false;
1536                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1537         }
1538         strlcpy(this->fullname,gecos,MAXGECOS+1);
1539
1540         return true;
1541 }
1542
1543 bool User::ChangeDisplayedHost(const char* shost)
1544 {
1545         if (!strcmp(shost, this->dhost))
1546                 return true;
1547
1548         if (IS_LOCAL(this))
1549         {
1550                 int MOD_RESULT = 0;
1551                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1552                 if (MOD_RESULT)
1553                         return false;
1554                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1555         }
1556
1557         if (this->ServerInstance->Config->CycleHosts)
1558                 this->WriteCommonExcept("QUIT :Changing hosts");
1559
1560         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1561         strlcpy(this->dhost,shost,64);
1562
1563         this->InvalidateCache();
1564
1565         if (this->ServerInstance->Config->CycleHosts)
1566         {
1567                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1568                 {
1569                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1570                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1571                         if (n.length() > 0)
1572                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1573                 }
1574         }
1575
1576         if (IS_LOCAL(this))
1577                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick,this->dhost);
1578
1579         return true;
1580 }
1581
1582 bool User::ChangeIdent(const char* newident)
1583 {
1584         if (!strcmp(newident, this->ident))
1585                 return true;
1586
1587         if (this->ServerInstance->Config->CycleHosts)
1588                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1589
1590         strlcpy(this->ident, newident, IDENTMAX+1);
1591
1592         this->InvalidateCache();
1593
1594         if (this->ServerInstance->Config->CycleHosts)
1595         {
1596                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1597                 {
1598                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1599                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1600                         if (n.length() > 0)
1601                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1602                 }
1603         }
1604
1605         return true;
1606 }
1607
1608 void User::SendAll(const char* command, const char* text, ...)
1609 {
1610         char textbuffer[MAXBUF];
1611         char formatbuffer[MAXBUF];
1612         va_list argsPtr;
1613
1614         va_start(argsPtr, text);
1615         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1616         va_end(argsPtr);
1617
1618         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1619         std::string fmt = formatbuffer;
1620
1621         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1622         {
1623                 (*i)->Write(fmt);
1624         }
1625 }
1626
1627
1628 std::string User::ChannelList(User* source)
1629 {
1630         std::string list;
1631
1632         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1633         {
1634                 /* If the target is the same as the sender, let them see all their channels.
1635                  * If the channel is NOT private/secret OR the user shares a common channel
1636                  * If the user is an oper, and the <options:operspywhois> option is set.
1637                  */
1638                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1639                 {
1640                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1641                 }
1642         }
1643
1644         return list;
1645 }
1646
1647 void User::SplitChanList(User* dest, const std::string &cl)
1648 {
1649         std::string line;
1650         std::ostringstream prefix;
1651         std::string::size_type start, pos, length;
1652
1653         prefix << this->nick << " " << dest->nick << " :";
1654         line = prefix.str();
1655         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1656
1657         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1658         {
1659                 length = (pos == std::string::npos) ? cl.length() : pos;
1660
1661                 if (line.length() + namelen + length - start > 510)
1662                 {
1663                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1664                         line = prefix.str();
1665                 }
1666
1667                 if(pos == std::string::npos)
1668                 {
1669                         line.append(cl.substr(start, length - start));
1670                         break;
1671                 }
1672                 else
1673                 {
1674                         line.append(cl.substr(start, length - start + 1));
1675                 }
1676         }
1677
1678         if (line.length())
1679         {
1680                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1681         }
1682 }
1683
1684 unsigned int User::GetMaxChans()
1685 {
1686         return this->MaxChans;
1687 }
1688
1689
1690 /*
1691  * Sets a user's connection class.
1692  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1693  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1694  * then their ip will be taken as 'priority' anyway, so for example,
1695  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1696  */
1697 ConnectClass* User::SetClass(const std::string &explicit_name)
1698 {
1699         ConnectClass *found = NULL;
1700
1701         if (!IS_LOCAL(this))
1702                 return NULL;
1703
1704         if (!explicit_name.empty())
1705         {
1706                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1707                 {
1708                         ConnectClass* c = *i;
1709
1710                         if (explicit_name == c->GetName() && !c->GetDisabled())
1711                         {
1712                                 found = c;
1713                         }
1714                 }
1715         }
1716         else
1717         {
1718                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1719                 {
1720                         ConnectClass* c = *i;
1721
1722                         if (((match(this->GetIPString(),c->GetHost().c_str(),true)) || (match(this->host,c->GetHost().c_str()))))
1723                         {
1724                                 if (c->GetPort())
1725                                 {
1726                                         if (this->GetPort() == c->GetPort() && !c->GetDisabled())
1727                                         {
1728                                                 found = c;
1729                                         }
1730                                         else
1731                                                 continue;
1732                                 }
1733                                 else
1734                                 {
1735                                         if (!c->GetDisabled())
1736                                                 found = c;
1737                                 }
1738                         }
1739                 }
1740         }
1741
1742         /* ensure we don't fuck things up refcount wise, only remove them from a class if we find a new one :P */
1743         if (found)
1744         {
1745                 /* deny change if change will take class over the limit */
1746                 if (found->limit && (found->RefCount + 1 >= found->limit))
1747                 {
1748                         ServerInstance->Logs->Log("USERS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", found->limit);
1749                         return this->MyClass;
1750                 }
1751
1752                 /* should always be valid, but just in case .. */
1753                 if (this->MyClass)
1754                 {
1755                         if (found == this->MyClass) // no point changing this shit :P
1756                                 return this->MyClass;
1757                         this->MyClass->RefCount--;
1758                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1759                 }
1760
1761                 this->MyClass = found;
1762                 this->MyClass->RefCount++;
1763                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1764         }
1765
1766         return this->MyClass;
1767 }
1768
1769 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1770  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1771  * then their ip will be taken as 'priority' anyway, so for example,
1772  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1773  */
1774 ConnectClass* User::GetClass()
1775 {
1776         return this->MyClass;
1777 }
1778
1779 void User::PurgeEmptyChannels()
1780 {
1781         std::vector<Channel*> to_delete;
1782
1783         // firstly decrement the count on each channel
1784         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1785         {
1786                 f->first->RemoveAllPrefixes(this);
1787                 if (f->first->DelUser(this) == 0)
1788                 {
1789                         /* No users left in here, mark it for deletion */
1790                         try
1791                         {
1792                                 to_delete.push_back(f->first);
1793                         }
1794                         catch (...)
1795                         {
1796                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1797                         }
1798                 }
1799         }
1800
1801         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1802         {
1803                 Channel* thischan = *n;
1804                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1805                 if (i2 != ServerInstance->chanlist->end())
1806                 {
1807                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1808                         delete i2->second;
1809                         ServerInstance->chanlist->erase(i2);
1810                         this->chans.erase(*n);
1811                 }
1812         }
1813
1814         this->UnOper();
1815 }
1816
1817 void User::ShowMOTD()
1818 {
1819         if (!ServerInstance->Config->MOTD.size())
1820         {
1821                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick);
1822                 return;
1823         }
1824         this->WriteNumeric(375, "%s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1825
1826         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1827                 this->WriteNumeric(372, "%s :- %s",this->nick,i->c_str());
1828
1829         this->WriteNumeric(376, "%s :End of message of the day.", this->nick);
1830 }
1831
1832 void User::ShowRULES()
1833 {
1834         if (!ServerInstance->Config->RULES.size())
1835         {
1836                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick);
1837                 return;
1838         }
1839
1840         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1841
1842         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1843                 this->WriteNumeric(232, "%s :- %s",this->nick,i->c_str());
1844
1845         this->WriteNumeric(309, "%s :End of RULES command.",this->nick);
1846 }
1847
1848 void User::HandleEvent(EventType et, int errornum)
1849 {
1850         if (this->quitting) // drop everything, user is due to be quit
1851                 return;
1852
1853         /* WARNING: May delete this user! */
1854         int thisfd = this->GetFd();
1855
1856         try
1857         {
1858                 switch (et)
1859                 {
1860                         case EVENT_READ:
1861                                 ServerInstance->ProcessUser(this);
1862                         break;
1863                         case EVENT_WRITE:
1864                                 this->FlushWriteBuf();
1865                         break;
1866                         case EVENT_ERROR:
1867                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1868                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1869                         break;
1870                 }
1871         }
1872         catch (...)
1873         {
1874                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1875         }
1876
1877         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1878         if ((ServerInstance->SE->GetRef(thisfd) == this))
1879         {
1880                 if (!WriteError.empty())
1881                 {
1882                         ServerInstance->Users->QuitUser(this, GetWriteError());
1883                 }
1884         }
1885 }
1886
1887 void User::SetOperQuit(const std::string &oquit)
1888 {
1889         operquitmsg = oquit;
1890 }
1891
1892 const char* User::GetOperQuit()
1893 {
1894         return operquitmsg.c_str();
1895 }
1896
1897 void User::IncreasePenalty(int increase)
1898 {
1899         this->Penalty += increase;
1900 }
1901
1902 void User::DecreasePenalty(int decrease)
1903 {
1904         this->Penalty -= decrease;
1905 }
1906
1907 VisData::VisData()
1908 {
1909 }
1910
1911 VisData::~VisData()
1912 {
1913 }
1914
1915 bool VisData::VisibleTo(User* user)
1916 {
1917         return true;
1918 }
1919