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_str(), *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         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 189         reset_due = ServerInstance->Time();
 190         age = ServerInstance->Time();
 191         Penalty = 0;
 192         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 193         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 194         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 195         fd = -1;
 196         recvq.clear();
 197         sendq.clear();
 198         WriteError.clear();
 199         res_forward = res_reverse = NULL;
 200         Visibility = NULL;
 201         ip = NULL;
 202         MyClass = NULL;
 203         io = NULL;
 204         AllowedUserModes = NULL;
 205         AllowedChanModes = NULL;
 206         AllowedOperCommands = NULL;
 207         chans.clear();
 208         invites.clear();
 209         memset(modes,0,sizeof(modes));
 210         memset(snomasks,0,sizeof(snomasks));
 211
 212         if (uid.empty())
 213                 uuid.assign(Instance->GetUID(), 0, UUID_LENGTH - 1);
 214         else
 215                 uuid.assign(uid, 0, UUID_LENGTH - 1);
 216
 217         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid.c_str(), uid.empty() ? "allocated new" : "used remote");
 218
 219         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 220         if (finduuid == Instance->Users->uuidlist->end())
 221                 (*Instance->Users->uuidlist)[uuid] = this;
 222         else
 223                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 224 }
 225
 226 User::~User()
 227 {
 228         /* NULL for remote users :) */
 229         if (this->MyClass)
 230         {
 231                 this->MyClass->RefCount--;
 232                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %lu", this->MyClass->RefCount);
 233         }
 234         if (this->AllowedOperCommands)
 235         {
 236                 delete AllowedOperCommands;
 237                 AllowedOperCommands = NULL;
 238         }
 239
 240         if (this->AllowedUserModes)
 241         {
 242                 delete[] AllowedUserModes;
 243                 AllowedUserModes = NULL;
 244         }
 245
 246         if (this->AllowedChanModes)
 247         {
 248                 delete[] AllowedChanModes;
 249                 AllowedChanModes = NULL;
 250         }
 251
 252         this->InvalidateCache();
 253         this->DecrementModes();
 254
 255         if (ip)
 256         {
 257                 ServerInstance->Users->RemoveCloneCounts(this);
 258
 259                 if (this->GetProtocolFamily() == AF_INET)
 260                 {
 261                         delete (sockaddr_in*)ip;
 262                 }
 263 #ifdef SUPPORT_IP6LINKS
 264                 else
 265                 {
 266                         delete (sockaddr_in6*)ip;
 267                 }
 268 #endif
 269         }
 270
 271         ServerInstance->Users->uuidlist->erase(uuid);
 272 }
 273
 274 const std::string& User::MakeHost()
 275 {
 276         if (!this->cached_makehost.empty())
 277                 return this->cached_makehost;
 278
 279         char nhost[MAXBUF];
 280         /* This is much faster than snprintf */
 281         char* t = nhost;
 282         for(const char* n = ident.c_str(); *n; n++)
 283                 *t++ = *n;
 284         *t++ = '@';
 285         for(const char* n = host.c_str(); *n; n++)
 286                 *t++ = *n;
 287         *t = 0;
 288
 289         this->cached_makehost.assign(nhost);
 290
 291         return this->cached_makehost;
 292 }
 293
 294 const std::string& User::MakeHostIP()
 295 {
 296         if (!this->cached_hostip.empty())
 297                 return this->cached_hostip;
 298
 299         char ihost[MAXBUF];
 300         /* This is much faster than snprintf */
 301         char* t = ihost;
 302         for(const char* n = ident.c_str(); *n; n++)
 303                 *t++ = *n;
 304         *t++ = '@';
 305         for(const char* n = this->GetIPString(); *n; n++)
 306                 *t++ = *n;
 307         *t = 0;
 308
 309         this->cached_hostip = ihost;
 310
 311         return this->cached_hostip;
 312 }
 313
 314 void User::CloseSocket()
 315 {
 316         if (this->fd > -1)
 317         {
 318                 ServerInstance->SE->Shutdown(this, 2);
 319                 ServerInstance->SE->Close(this);
 320         }
 321 }
 322
 323 const std::string& User::GetFullHost()
 324 {
 325         if (!this->cached_fullhost.empty())
 326                 return this->cached_fullhost;
 327
 328         char result[MAXBUF];
 329         char* t = result;
 330         for(const char* n = nick.c_str(); *n; n++)
 331                 *t++ = *n;
 332         *t++ = '!';
 333         for(const char* n = ident.c_str(); *n; n++)
 334                 *t++ = *n;
 335         *t++ = '@';
 336         for(const char* n = dhost.c_str(); *n; n++)
 337                 *t++ = *n;
 338         *t = 0;
 339
 340         this->cached_fullhost = result;
 341
 342         return this->cached_fullhost;
 343 }
 344
 345 char* User::MakeWildHost()
 346 {
 347         static char nresult[MAXBUF];
 348         char* t = nresult;
 349         *t++ = '*';     *t++ = '!';
 350         *t++ = '*';     *t++ = '@';
 351         for(const char* n = dhost.c_str(); *n; n++)
 352                 *t++ = *n;
 353         *t = 0;
 354         return nresult;
 355 }
 356
 357 int User::ReadData(void* buffer, size_t size)
 358 {
 359         if (IS_LOCAL(this))
 360         {
 361 #ifndef WIN32
 362                 return read(this->fd, buffer, size);
 363 #else
 364                 return recv(this->fd, (char*)buffer, size, 0);
 365 #endif
 366         }
 367         else
 368                 return 0;
 369 }
 370
 371
 372 const std::string& User::GetFullRealHost()
 373 {
 374         if (!this->cached_fullrealhost.empty())
 375                 return this->cached_fullrealhost;
 376
 377         char fresult[MAXBUF];
 378         char* t = fresult;
 379         for(const char* n = nick.c_str(); *n; n++)
 380                 *t++ = *n;
 381         *t++ = '!';
 382         for(const char* n = ident.c_str(); *n; n++)
 383                 *t++ = *n;
 384         *t++ = '@';
 385         for(const char* n = host.c_str(); *n; n++)
 386                 *t++ = *n;
 387         *t = 0;
 388
 389         this->cached_fullrealhost = fresult;
 390
 391         return this->cached_fullrealhost;
 392 }
 393
 394 bool User::IsInvited(const irc::string &channel)
 395 {
 396         time_t now = time(NULL);
 397         InvitedList::iterator safei;
 398         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 399         {
 400                 if (channel == i->first)
 401                 {
 402                         if (i->second != 0 && now > i->second)
 403                         {
 404                                 /* Expired invite, remove it. */
 405                                 safei = i;
 406                                 --i;
 407                                 invites.erase(safei);
 408                                 continue;
 409                         }
 410                         return true;
 411                 }
 412         }
 413         return false;
 414 }
 415
 416 InvitedList* User::GetInviteList()
 417 {
 418         time_t now = time(NULL);
 419         /* Weed out expired invites here. */
 420         InvitedList::iterator safei;
 421         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 422         {
 423                 if (i->second != 0 && now > i->second)
 424                 {
 425                         /* Expired invite, remove it. */
 426                         safei = i;
 427                         --i;
 428                         invites.erase(safei);
 429                 }
 430         }
 431         return &invites;
 432 }
 433
 434 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 435 {
 436         time_t now = time(NULL);
 437         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 438         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 439         {
 440                 if (channel == i->first)
 441                 {
 442                         if (i->second != 0 && invtimeout > i->second)
 443                         {
 444                                 i->second = invtimeout;
 445                         }
 446                 }
 447         }
 448         invites.push_back(std::make_pair(channel, invtimeout));
 449 }
 450
 451 void User::RemoveInvite(const irc::string &channel)
 452 {
 453         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 454         {
 455                 if (channel == i->first)
 456                 {
 457                         invites.erase(i);
 458                         return;
 459                 }
 460         }
 461 }
 462
 463 bool User::HasModePermission(unsigned char mode, ModeType type)
 464 {
 465         if (!IS_LOCAL(this))
 466                 return true;
 467
 468         if (!IS_OPER(this))
 469                 return false;
 470
 471         if (!AllowedUserModes || !AllowedChanModes)
 472                 return false;
 473
 474         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 475
 476 }
 477
 478 bool User::HasPermission(const std::string &command)
 479 {
 480         /*
 481          * users on remote servers can completely bypass all permissions based checks.
 482          * This prevents desyncs when one server has different type/class tags to another.
 483          * That having been said, this does open things up to the possibility of source changes
 484          * allowing remote kills, etc - but if they have access to the src, they most likely have
 485          * access to the conf - so it's an end to a means either way.
 486          */
 487         if (!IS_LOCAL(this))
 488                 return true;
 489
 490         // are they even an oper at all?
 491         if (!IS_OPER(this))
 492         {
 493                 return false;
 494         }
 495
 496         if (!AllowedOperCommands)
 497                 return false;
 498
 499         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 500                 return true;
 501         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 502                 return true;
 503
 504         return false;
 505 }
 506
 507 bool User::AddBuffer(const std::string &a)
 508 {
 509         std::string::size_type start = 0;
 510         std::string::size_type i = a.find('\r');
 511
 512         /*
 513          * The old implementation here took a copy, and rfind() on \r, removing as it found them, before
 514          * copying a second time onto the recvq. That's ok, but involves three copies minimum (recv() to buffer,
 515          * buffer to here, here to recvq) - The new method now copies twice (recv() to buffer, buffer to recvq).
 516          *
 517          * We use find() instead of rfind() for clarity, however unlike the old code, our scanning of the string is
 518          * contiguous: as we specify a startpoint, we never see characters we have scanned previously, making this
 519          * marginally faster in cases with a number of \r hidden early on in the buffer.
 520          *
 521          * How it works:
 522          * Start at first pos of string, find first \r, append everything in the chunk (excluding \r) to recvq. Set
 523          * i ahead of the \r, search for next \r, add next chunk to buffer... repeat.
 524          *              -- w00t (7 may, 2008)
 525          */
 526         if (i == std::string::npos)
 527         {
 528                 // no \r that we need to dance around, just add to buffer
 529                 recvq.append(a);
 530         }
 531         else
 532         {
 533                 // While we can find the end of a chunk to add
 534                 while (i != std::string::npos)
 535                 {
 536                         // Append the chunk that we have
 537                         recvq.append(a, start, (i - start));
 538
 539                         // Start looking for the next one
 540                         start = i + 1;
 541                         i = a.find('\r', start);
 542                 }
 543
 544                 if (start != a.length())
 545                 {
 546                         /*
 547                          * This is here to catch a corner case when we get something like:
 548                          * NICK w0
 549                          * 0t\r\nU
 550                          * SER ...
 551                          * in successive calls to us.
 552                          *
 553                          * Without this conditional, the 'U' on the second case will be dropped,
 554                          * which is most *certainly* not the behaviour we want!
 555                          *              -- w00t
 556                          */
 557                         recvq.append(a, start, (a.length() - start));
 558                 }
 559         }
 560
 561         if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 562         {
 563                 this->SetWriteError("RecvQ exceeded");
 564                 ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %lu exceeds connect class maximum of %lu",this->nick.c_str(),(unsigned long int)recvq.length(),this->MyClass->GetRecvqMax());
 565                 return false;
 566         }
 567
 568         return true;
 569 }
 570
 571 bool User::BufferIsReady()
 572 {
 573         return (recvq.find('\n') != std::string::npos);
 574 }
 575
 576 void User::ClearBuffer()
 577 {
 578         recvq.clear();
 579 }
 580
 581 std::string User::GetBuffer()
 582 {
 583         try
 584         {
 585                 if (recvq.empty())
 586                         return "";
 587
 588                 /* Strip any leading \r or \n off the string.
 589                  * Usually there are only one or two of these,
 590                  * so its is computationally cheap to do.
 591                  */
 592                 std::string::iterator t = recvq.begin();
 593                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 594                 {
 595                         recvq.erase(t);
 596                         t = recvq.begin();
 597                 }
 598
 599                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 600                 {
 601                         /* Find the first complete line, return it as the
 602                          * result, and leave the recvq as whats left
 603                          */
 604                         if (*x == '\n')
 605                         {
 606                                 std::string ret = std::string(recvq.begin(), x);
 607                                 recvq.erase(recvq.begin(), x + 1);
 608                                 return ret;
 609                         }
 610                 }
 611                 return "";
 612         }
 613
 614         catch (...)
 615         {
 616                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 617                 return "";
 618         }
 619 }
 620
 621 void User::AddWriteBuf(const std::string &data)
 622 {
 623         if (*this->GetWriteError())
 624                 return;
 625
 626         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 627         {
 628                 /*
 629                  * Fix by brain - Set the error text BEFORE calling, because
 630                  * if we dont it'll recursively  call here over and over again trying
 631                  * to repeatedly add the text to the sendq!
 632                  */
 633                 this->SetWriteError("SendQ exceeded");
 634                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %lu exceeds connect class maximum of %lu",this->nick.c_str(),(unsigned long int)sendq.length() + data.length(),this->MyClass->GetSendqMax());
 635                 return;
 636         }
 637
 638         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 639                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 640         else
 641                 sendq.append(data);
 642 }
 643
 644 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 645 void User::FlushWriteBuf()
 646 {
 647         try
 648         {
 649                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 650                 {
 651                         sendq.clear();
 652                 }
 653                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 654                 {
 655                         int old_sendq_length = sendq.length();
 656                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 657
 658                         if (n_sent == -1)
 659                         {
 660                                 if (errno == EAGAIN)
 661                                 {
 662                                         /* The socket buffer is full. This isnt fatal,
 663                                          * try again later.
 664                                          */
 665                                         this->ServerInstance->SE->WantWrite(this);
 666                                 }
 667                                 else
 668                                 {
 669                                         /* Fatal error, set write error and bail
 670                                          */
 671                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 672                                         return;
 673                                 }
 674                         }
 675                         else
 676                         {
 677                                 /* advance the queue */
 678                                 if (n_sent)
 679                                         this->sendq = this->sendq.substr(n_sent);
 680                                 /* update the user's stats counters */
 681                                 this->bytes_out += n_sent;
 682                                 this->cmds_out++;
 683                                 if (n_sent != old_sendq_length)
 684                                         this->ServerInstance->SE->WantWrite(this);
 685                         }
 686                 }
 687         }
 688
 689         catch (...)
 690         {
 691                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 692         }
 693
 694         if (this->sendq.empty())
 695         {
 696                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 697         }
 698 }
 699
 700 void User::SetWriteError(const std::string &error)
 701 {
 702         // don't try to set the error twice, its already set take the first string.
 703         if (this->WriteError.empty())
 704                 this->WriteError = error;
 705 }
 706
 707 const char* User::GetWriteError()
 708 {
 709         return this->WriteError.c_str();
 710 }
 711
 712 void User::Oper(const std::string &opertype, const std::string &opername)
 713 {
 714         char* mycmd;
 715         char* savept;
 716         char* savept2;
 717
 718         try
 719         {
 720                 this->modes[UM_OPERATOR] = 1;
 721                 this->WriteServ("MODE %s :+o", this->nick.c_str());
 722                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 723                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick.c_str(), this->ident.c_str(), this->host.c_str(), opertype.c_str());
 724                 this->oper.assign(opertype, 0, 512);
 725                 ServerInstance->Users->all_opers.push_back(this);
 726
 727                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper.c_str());
 728                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 729                 {
 730
 731                         if (AllowedOperCommands)
 732                                 AllowedOperCommands->clear();
 733                         else
 734                                 AllowedOperCommands = new std::map<std::string, bool>;
 735
 736                         if (!AllowedChanModes)
 737                                 AllowedChanModes = new bool[64];
 738
 739                         if (!AllowedUserModes)
 740                                 AllowedUserModes = new bool[64];
 741
 742                         memset(AllowedUserModes, 0, 64);
 743                         memset(AllowedChanModes, 0, 64);
 744
 745                         char* Classes = strdup(iter_opertype->second);
 746                         char* myclass = strtok_r(Classes," ",&savept);
 747                         while (myclass)
 748                         {
 749                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 750                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 751                                 {
 752                                         char* CommandList = strdup(iter_operclass->second.commandlist);
 753                                         mycmd = strtok_r(CommandList," ",&savept2);
 754                                         while (mycmd)
 755                                         {
 756                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 757                                                 mycmd = strtok_r(NULL," ",&savept2);
 758                                         }
 759                                         free(CommandList);
 760                                         this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 761                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 762                                         {
 763                                                 if (*c == '*')
 764                                                 {
 765                                                         memset(this->AllowedUserModes, (int)(true), 64);
 766                                                 }
 767                                                 else
 768                                                 {
 769                                                         this->AllowedUserModes[*c - 'A'] = true;
 770                                                 }
 771                                         }
 772                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 773                                         {
 774                                                 if (*c == '*')
 775                                                 {
 776                                                         memset(this->AllowedChanModes, (int)(true), 64);
 777                                                 }
 778                                                 else
 779                                                 {
 780                                                         this->AllowedChanModes[*c - 'A'] = true;
 781                                                 }
 782                                         }
 783                                 }
 784                                 myclass = strtok_r(NULL," ",&savept);
 785                         }
 786                         free(Classes);
 787                 }
 788
 789                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 790         }
 791
 792         catch (...)
 793         {
 794                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 795         }
 796 }
 797
 798 void User::UnOper()
 799 {
 800         if (IS_OPER(this))
 801         {
 802                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 803                 std::string moderemove("-");
 804
 805                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 806                 {
 807                         if (letter != 'o')
 808                         {
 809                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 810                                 if (mh && mh->NeedsOper())
 811                                         moderemove += letter;
 812                         }
 813                 }
 814
 815                 std::vector<std::string> parameters;
 816                 parameters.push_back(this->nick);
 817                 parameters.push_back(moderemove);
 818
 819                 ServerInstance->Parser->CallHandler("MODE", parameters, this);
 820
 821                 /* unset their oper type (what IS_OPER checks), and remove +o */
 822                 this->oper.clear();
 823                 this->modes[UM_OPERATOR] = 0;
 824
 825                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 826                 ServerInstance->Users->all_opers.remove(this);
 827
 828                 if (AllowedOperCommands)
 829                 {
 830                         delete AllowedOperCommands;
 831                         AllowedOperCommands = NULL;
 832                 }
 833                 if (AllowedUserModes)
 834                 {
 835                         delete[] AllowedUserModes;
 836                         AllowedUserModes = NULL;
 837                 }
 838                 if (AllowedChanModes)
 839                 {
 840                         delete[] AllowedChanModes;
 841                         AllowedChanModes = NULL;
 842                 }
 843
 844         }
 845 }
 846
 847 /* adds or updates an entry in the whowas list */
 848 void User::AddToWhoWas()
 849 {
 850         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 851         if (whowas_command)
 852         {
 853                 std::deque<classbase*> params;
 854                 params.push_back(this);
 855                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 856         }
 857 }
 858
 859 /*
 860  * Check class restrictions
 861  */
 862 void User::CheckClass()
 863 {
 864         ConnectClass* a = this->MyClass;
 865
 866         if ((!a) || (a->GetType() == CC_DENY))
 867         {
 868                 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
 869                 return;
 870         }
 871         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 872         {
 873                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 874                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 875                 return;
 876         }
 877         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 878         {
 879                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 880                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 881                 return;
 882         }
 883
 884         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 885         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 886         this->MaxChans = a->GetMaxChans();
 887 }
 888
 889 bool User::CheckLines()
 890 {
 891         const char* check[] = { "G" , "K", NULL };
 892
 893         if (!this->exempt)
 894         {
 895                 for (int n = 0; check[n]; ++n)
 896                 {
 897                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 898
 899                         if (r)
 900                         {
 901                                 r->Apply(this);
 902                                 return true;
 903                         }
 904                 }
 905         }
 906
 907         return false;
 908 }
 909
 910 void User::FullConnect()
 911 {
 912         ServerInstance->stats->statsConnects++;
 913         this->idle_lastmsg = ServerInstance->Time();
 914
 915         /*
 916          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 917          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 918          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 919          * Don't remove this! -- w00t
 920          */
 921         this->SetClass();
 922
 923         /* Check the password, if one is required by the user's connect class.
 924          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 925          */
 926         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 927         {
 928                 ServerInstance->Users->QuitUser(this, "Invalid password");
 929                 return;
 930         }
 931
 932         if (this->CheckLines())
 933                 return;
 934
 935         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 936         this->WriteNumeric(001, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick.c_str(), ServerInstance->Config->Network, this->nick.c_str(), this->ident.c_str(), this->host.c_str());
 937         this->WriteNumeric(002, "%s :Your host is %s, running version InspIRCd-1.2",this->nick.c_str(),ServerInstance->Config->ServerName);
 938         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 939         this->WriteNumeric(004, "%s %s InspIRCd-1.2 %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 940
 941         ServerInstance->Config->Send005(this);
 942         this->WriteNumeric(42, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 943
 944
 945         this->ShowMOTD();
 946
 947         /* Now registered */
 948         if (ServerInstance->Users->unregistered_count)
 949                 ServerInstance->Users->unregistered_count--;
 950
 951         /* Trigger LUSERS output, give modules a chance too */
 952         int MOD_RESULT = 0;
 953         std::string command("LUSERS");
 954         std::vector<std::string> parameters;
 955         FOREACH_RESULT(I_OnPreCommand, OnPreCommand(command, parameters, this, true, "LUSERS"));
 956         if (!MOD_RESULT)
 957                 ServerInstance->CallCommandHandler(command, parameters, this);
 958
 959         /*
 960          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 961          * for a user that doesn't exist yet.
 962          */
 963         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 964
 965         this->registered = REG_ALL;
 966
 967         ServerInstance->PI->Introduce(this);
 968
 969         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 970
 971         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]", this->GetPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
 972         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 973         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 974 }
 975
 976 /** User::UpdateNick()
 977  * re-allocates a nick in the user_hash after they change nicknames,
 978  * returns a pointer to the new user as it may have moved
 979  */
 980 User* User::UpdateNickHash(const char* New)
 981 {
 982         //user_hash::iterator newnick;
 983         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 984
 985         if (!irc::string(this->nick.c_str()).compare(New))
 986                 return oldnick->second;
 987
 988         if (oldnick == ServerInstance->Users->clientlist->end())
 989                 return NULL; /* doesnt exist */
 990
 991         User* olduser = oldnick->second;
 992         (*(ServerInstance->Users->clientlist))[New] = olduser;
 993         ServerInstance->Users->clientlist->erase(oldnick);
 994         return olduser;
 995 }
 996
 997 void User::InvalidateCache()
 998 {
 999         /* Invalidate cache */
1000         cached_fullhost.clear();
1001         cached_hostip.clear();
1002         cached_makehost.clear();
1003         cached_fullrealhost.clear();
1004 }
1005
1006 bool User::ForceNickChange(const char* newnick)
1007 {
1008         int MOD_RESULT = 0;
1009
1010         this->InvalidateCache();
1011
1012         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1013
1014         if (MOD_RESULT)
1015         {
1016                 ServerInstance->stats->statsCollisions++;
1017                 return false;
1018         }
1019
1020         std::deque<classbase*> dummy;
1021         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1022         if (nickhandler) // wtfbbq, when would this not be here
1023         {
1024                 std::vector<std::string> parameters;
1025                 nickhandler->HandleInternal(1, dummy);
1026                 parameters.push_back(newnick);
1027                 bool result = (ServerInstance->Parser->CallHandler("NICK", parameters, this) == CMD_SUCCESS);
1028                 nickhandler->HandleInternal(0, dummy);
1029                 return result;
1030         }
1031
1032         // Unreachable, we hope
1033         return false;
1034 }
1035
1036 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1037 {
1038         this->cachedip = "";
1039
1040         switch (protocol_family)
1041         {
1042 #ifdef SUPPORT_IP6LINKS
1043                 case AF_INET6:
1044                 {
1045                         sockaddr_in6* sin = new sockaddr_in6;
1046                         sin->sin6_family = AF_INET6;
1047                         sin->sin6_port = port;
1048                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1049                         this->ip = (sockaddr*)sin;
1050                 }
1051                 break;
1052 #endif
1053                 case AF_INET:
1054                 {
1055                         sockaddr_in* sin = new sockaddr_in;
1056                         sin->sin_family = AF_INET;
1057                         sin->sin_port = port;
1058                         inet_pton(AF_INET, sip, &sin->sin_addr);
1059                         this->ip = (sockaddr*)sin;
1060                 }
1061                 break;
1062                 default:
1063                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick.c_str());
1064                 break;
1065         }
1066 }
1067
1068 int User::GetPort()
1069 {
1070         if (this->ip == NULL)
1071                 return 0;
1072
1073         switch (this->GetProtocolFamily())
1074         {
1075 #ifdef SUPPORT_IP6LINKS
1076                 case AF_INET6:
1077                 {
1078                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1079                         return sin->sin6_port;
1080                 }
1081                 break;
1082 #endif
1083                 case AF_INET:
1084                 {
1085                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1086                         return sin->sin_port;
1087                 }
1088                 break;
1089                 default:
1090                 break;
1091         }
1092         return 0;
1093 }
1094
1095 int User::GetProtocolFamily()
1096 {
1097         if (this->ip == NULL)
1098                 return 0;
1099
1100         sockaddr_in* sin = (sockaddr_in*)this->ip;
1101         return sin->sin_family;
1102 }
1103
1104 const char* User::GetCIDRMask(int range)
1105 {
1106         static char buf[40];
1107
1108         if (this->ip == NULL)
1109                 return "";
1110
1111         if (range < 0)
1112                 throw "Negative range, sorry, no.";
1113
1114         /*
1115          * Original code written by Oliver Lupton (Om).
1116          * Integrated by me. Thanks. :) -- w00t
1117          */
1118         switch (this->GetProtocolFamily())
1119         {
1120 #ifdef SUPPORT_IP6LINKS
1121                 case AF_INET6:
1122                 {
1123                         struct in6_addr v6;
1124
1125                         if(range > 128)
1126                         {
1127                                 printf("Error, range given (%d) larger than address length (128)\n", range);
1128                                 return 0;
1129                         }
1130
1131                         if(inet_pton(AF_INET6, this->GetIPString(), &v6))
1132                         {
1133                                 /* unsigned char s6_addr[16]; */
1134                                 int i;
1135                                 int bytestoblank;
1136                                 int extrabits;
1137                                 char buffer[64];
1138
1139                                 if(range > 0)
1140                                 {
1141                                         /* (128 - range) bits must be blanked, so ((128 - range) / 8) of the bytes, working backwards, must be blanked. */
1142                                         bytestoblank = (128 - range) / 8;
1143
1144                                         /* ((128 - range) % 8) bits of the next byte must also be blanked. */
1145                                         extrabits = (128 - range) % 8;
1146                                         v6.s6_addr[15 - bytestoblank] = (v6.s6_addr[15 - bytestoblank] >> extrabits) << extrabits;
1147
1148                                         for(i = 0; i < bytestoblank; i++)
1149                                         {
1150                                                 v6.s6_addr[15 - i] = 0;
1151                                         }
1152                                 }
1153                                 else
1154                                 {
1155                                         for(i = 0; i < 15; i++)
1156                                         {
1157                                                 v6.s6_addr[i] = 0;
1158                                         }
1159                                 }
1160
1161                                 sprintf(buf, "%s/%d\n", inet_ntop(AF_INET6, &v6, buffer, 64), range);
1162                                 return buf;
1163                         }
1164                         else
1165                         {
1166                                 throw "CIDR mask for v6 failed";
1167                         }
1168
1169                 }
1170                 break;
1171 #endif
1172                 case AF_INET:
1173                 {
1174                         struct in_addr v4;
1175
1176                         if (range > 32)
1177                                 throw "more than 32 bits on an ipv4 connection, can't do that..";
1178
1179                         if(inet_pton(AF_INET, this->GetIPString(), &v4))
1180                         {
1181                                 char buffer[16];
1182                                 uint32_t temp;
1183
1184                                 /* (32 - range) is the number of bits we are *ignoring*. We shift this left and then right to wipe off these bits. */
1185
1186                                 if(range > 0)
1187                                 {
1188                                         temp = ntohl(v4.s_addr);
1189                                         temp = (temp >> (32 - range)) << (32 - range);
1190                                         v4.s_addr = htonl(temp);
1191                                 }
1192                                 else
1193                                 {
1194                                         v4.s_addr = 0;
1195                                 }
1196
1197                                 sprintf(buf, "%s/%d\n", inet_ntop(AF_INET, &v4, buffer, 16), range);
1198                                 return buf;
1199                         }
1200                         else
1201                         {
1202                                 throw "CIDR mask for v4 failed";
1203                         }
1204                 }
1205                 break;
1206         }
1207
1208         return ""; // unused, but oh well
1209 }
1210
1211 const char* User::GetIPString(bool translate4in6)
1212 {
1213         static char buf[40];
1214
1215         if (this->ip == NULL)
1216                 return "";
1217
1218         if (!this->cachedip.empty())
1219                 return this->cachedip.c_str();
1220
1221         switch (this->GetProtocolFamily())
1222         {
1223 #ifdef SUPPORT_IP6LINKS
1224                 case AF_INET6:
1225                 {
1226                         static char temp[1024];
1227
1228                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1229                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1230                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1231                         if (*buf == ':')
1232                         {
1233                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1234                                 *temp = '0';
1235                                 if (translate4in6 && !strncmp(temp, "0::ffff:", 8))
1236                                 {
1237                                         this->cachedip = temp + 8;
1238                                         return temp + 8;
1239                                 }
1240
1241                                 this->cachedip = temp;
1242                                 return temp;
1243                         }
1244
1245                         this->cachedip = buf;
1246                         return buf;
1247                 }
1248                 break;
1249 #endif
1250                 case AF_INET:
1251                 {
1252                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1253                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1254                         this->cachedip = buf;
1255                         return buf;
1256                 }
1257                 break;
1258                 default:
1259                 break;
1260         }
1261
1262         // Unreachable, probably
1263         return "";
1264 }
1265
1266 /** NOTE: We cannot pass a const reference to this method.
1267  * The string is changed by the workings of the method,
1268  * so that if we pass const ref, we end up copying it to
1269  * something we can change anyway. Makes sense to just let
1270  * the compiler do that copy for us.
1271  */
1272 void User::Write(std::string text)
1273 {
1274         if (!ServerInstance->SE->BoundsCheckFd(this))
1275                 return;
1276
1277         try
1278         {
1279                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1280                 text.append("\r\n");
1281         }
1282         catch (...)
1283         {
1284                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1285                 return;
1286         }
1287
1288         if (this->io)
1289         {
1290                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1291                  * implement their own buffering mechanisms
1292                  */
1293                 try
1294                 {
1295                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1296                 }
1297                 catch (CoreException& modexcept)
1298                 {
1299                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1300                 }
1301         }
1302         else
1303         {
1304                 this->AddWriteBuf(text);
1305         }
1306         ServerInstance->stats->statsSent += text.length();
1307         this->ServerInstance->SE->WantWrite(this);
1308 }
1309
1310 /** Write()
1311  */
1312 void User::Write(const char *text, ...)
1313 {
1314         va_list argsPtr;
1315         char textbuffer[MAXBUF];
1316
1317         va_start(argsPtr, text);
1318         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1319         va_end(argsPtr);
1320
1321         this->Write(std::string(textbuffer));
1322 }
1323
1324 void User::WriteServ(const std::string& text)
1325 {
1326         char textbuffer[MAXBUF];
1327
1328         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1329         this->Write(std::string(textbuffer));
1330 }
1331
1332 /** WriteServ()
1333  *  Same as Write(), except `text' is prefixed with `:server.name '.
1334  */
1335 void User::WriteServ(const char* text, ...)
1336 {
1337         va_list argsPtr;
1338         char textbuffer[MAXBUF];
1339
1340         va_start(argsPtr, text);
1341         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1342         va_end(argsPtr);
1343
1344         this->WriteServ(std::string(textbuffer));
1345 }
1346
1347
1348 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1349 {
1350         va_list argsPtr;
1351         char textbuffer[MAXBUF];
1352
1353         va_start(argsPtr, text);
1354         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1355         va_end(argsPtr);
1356
1357         this->WriteNumeric(numeric, std::string(textbuffer));
1358 }
1359
1360 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1361 {
1362         char textbuffer[MAXBUF];
1363         int MOD_RESULT = 0;
1364
1365         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1366
1367         if (MOD_RESULT)
1368                 return;
1369
1370         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1371         this->Write(std::string(textbuffer));
1372 }
1373
1374 void User::WriteFrom(User *user, const std::string &text)
1375 {
1376         char tb[MAXBUF];
1377
1378         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1379
1380         this->Write(std::string(tb));
1381 }
1382
1383
1384 /* write text from an originating user to originating user */
1385
1386 void User::WriteFrom(User *user, const char* text, ...)
1387 {
1388         va_list argsPtr;
1389         char textbuffer[MAXBUF];
1390
1391         va_start(argsPtr, text);
1392         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1393         va_end(argsPtr);
1394
1395         this->WriteFrom(user, std::string(textbuffer));
1396 }
1397
1398
1399 /* write text to an destination user from a source user (e.g. user privmsg) */
1400
1401 void User::WriteTo(User *dest, const char *data, ...)
1402 {
1403         char textbuffer[MAXBUF];
1404         va_list argsPtr;
1405
1406         va_start(argsPtr, data);
1407         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1408         va_end(argsPtr);
1409
1410         this->WriteTo(dest, std::string(textbuffer));
1411 }
1412
1413 void User::WriteTo(User *dest, const std::string &data)
1414 {
1415         dest->WriteFrom(this, data);
1416 }
1417
1418
1419 void User::WriteCommon(const char* text, ...)
1420 {
1421         char textbuffer[MAXBUF];
1422         va_list argsPtr;
1423
1424         if (this->registered != REG_ALL)
1425                 return;
1426
1427         va_start(argsPtr, text);
1428         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1429         va_end(argsPtr);
1430
1431         this->WriteCommon(std::string(textbuffer));
1432 }
1433
1434 void User::WriteCommon(const std::string &text)
1435 {
1436         bool sent_to_at_least_one = false;
1437         char tb[MAXBUF];
1438
1439         if (this->registered != REG_ALL)
1440                 return;
1441
1442         uniq_id++;
1443
1444         if (!already_sent)
1445                 InitializeAlreadySent(ServerInstance->SE);
1446
1447         /* We dont want to be doing this n times, just once */
1448         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost().c_str(),text.c_str());
1449         std::string out = tb;
1450
1451         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1452         {
1453                 CUList* ulist = v->first->GetUsers();
1454                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1455                 {
1456                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1457                         {
1458                                 already_sent[i->first->fd] = uniq_id;
1459                                 i->first->Write(out);
1460                                 sent_to_at_least_one = true;
1461                         }
1462                 }
1463         }
1464
1465         /*
1466          * if the user was not in any channels, no users will receive the text. Make sure the user
1467          * receives their OWN message for WriteCommon
1468          */
1469         if (!sent_to_at_least_one)
1470         {
1471                 this->Write(std::string(tb));
1472         }
1473 }
1474
1475
1476 /* write a formatted string to all users who share at least one common
1477  * channel, NOT including the source user e.g. for use in QUIT
1478  */
1479
1480 void User::WriteCommonExcept(const char* text, ...)
1481 {
1482         char textbuffer[MAXBUF];
1483         va_list argsPtr;
1484
1485         va_start(argsPtr, text);
1486         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1487         va_end(argsPtr);
1488
1489         this->WriteCommonExcept(std::string(textbuffer));
1490 }
1491
1492 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1493 {
1494         char tb1[MAXBUF];
1495         char tb2[MAXBUF];
1496
1497         if (this->registered != REG_ALL)
1498                 return;
1499
1500         uniq_id++;
1501
1502         if (!already_sent)
1503                 InitializeAlreadySent(ServerInstance->SE);
1504
1505         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1506         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1507         std::string out1 = tb1;
1508         std::string out2 = tb2;
1509
1510         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1511         {
1512                 CUList *ulist = v->first->GetUsers();
1513                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1514                 {
1515                         if (this != i->first)
1516                         {
1517                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1518                                 {
1519                                         already_sent[i->first->fd] = uniq_id;
1520                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1521                                 }
1522                         }
1523                 }
1524         }
1525 }
1526
1527 void User::WriteCommonExcept(const std::string &text)
1528 {
1529         char tb1[MAXBUF];
1530         std::string out1;
1531
1532         if (this->registered != REG_ALL)
1533                 return;
1534
1535         uniq_id++;
1536
1537         if (!already_sent)
1538                 InitializeAlreadySent(ServerInstance->SE);
1539
1540         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost().c_str(),text.c_str());
1541         out1 = tb1;
1542
1543         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1544         {
1545                 CUList *ulist = v->first->GetUsers();
1546                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1547                 {
1548                         if (this != i->first)
1549                         {
1550                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1551                                 {
1552                                         already_sent[i->first->fd] = uniq_id;
1553                                         i->first->Write(out1);
1554                                 }
1555                         }
1556                 }
1557         }
1558
1559 }
1560
1561 void User::WriteWallOps(const std::string &text)
1562 {
1563         if (!IS_LOCAL(this))
1564                 return;
1565
1566         std::string wallop("WALLOPS :");
1567         wallop.append(text);
1568
1569         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1570         {
1571                 User* t = *i;
1572                 if (t->IsModeSet('w'))
1573                         this->WriteTo(t,wallop);
1574         }
1575 }
1576
1577 void User::WriteWallOps(const char* text, ...)
1578 {
1579         if (!IS_LOCAL(this))
1580                 return;
1581
1582         char textbuffer[MAXBUF];
1583         va_list argsPtr;
1584
1585         va_start(argsPtr, text);
1586         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1587         va_end(argsPtr);
1588
1589         this->WriteWallOps(std::string(textbuffer));
1590 }
1591
1592 /* return 0 or 1 depending if users u and u2 share one or more common channels
1593  * (used by QUIT, NICK etc which arent channel specific notices)
1594  *
1595  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1596  * the first users channels then the second users channels within the outer loop,
1597  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1598  * all possible iterations). However this new function instead checks against the
1599  * channel's userlist in the inner loop which is a std::map<User*,User*>
1600  * and saves us time as we already know what pointer value we are after.
1601  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1602  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1603  */
1604 bool User::SharesChannelWith(User *other)
1605 {
1606         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1607                 return false;
1608
1609         /* Outer loop */
1610         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1611         {
1612                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1613                  * by replacing it with a map::find which *should* be more efficient
1614                  */
1615                 if (i->first->HasUser(other))
1616                         return true;
1617         }
1618         return false;
1619 }
1620
1621 bool User::ChangeName(const char* gecos)
1622 {
1623         if (!this->fullname.compare(gecos))
1624                 return true;
1625
1626         if (IS_LOCAL(this))
1627         {
1628                 int MOD_RESULT = 0;
1629                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1630                 if (MOD_RESULT)
1631                         return false;
1632                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1633         }
1634         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1635
1636         return true;
1637 }
1638
1639 bool User::ChangeDisplayedHost(const char* shost)
1640 {
1641         if (dhost == shost)
1642                 return true;
1643
1644         if (IS_LOCAL(this))
1645         {
1646                 int MOD_RESULT = 0;
1647                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1648                 if (MOD_RESULT)
1649                         return false;
1650                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1651         }
1652
1653         if (this->ServerInstance->Config->CycleHosts)
1654                 this->WriteCommonExcept("QUIT :Changing hosts");
1655
1656         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1657         this->dhost.assign(shost, 0, 64);
1658
1659         this->InvalidateCache();
1660
1661         if (this->ServerInstance->Config->CycleHosts)
1662         {
1663                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1664                 {
1665                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name.c_str());
1666                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1667                         if (n.length() > 0)
1668                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name.c_str(), n.c_str());
1669                 }
1670         }
1671
1672         if (IS_LOCAL(this))
1673                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1674
1675         return true;
1676 }
1677
1678 bool User::ChangeIdent(const char* newident)
1679 {
1680         if (!this->ident.compare(newident))
1681                 return true;
1682
1683         if (this->ServerInstance->Config->CycleHosts)
1684                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1685
1686         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1687
1688         this->InvalidateCache();
1689
1690         if (this->ServerInstance->Config->CycleHosts)
1691         {
1692                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1693                 {
1694                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name.c_str());
1695                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1696                         if (n.length() > 0)
1697                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name.c_str(), n.c_str());
1698                 }
1699         }
1700
1701         return true;
1702 }
1703
1704 void User::SendAll(const char* command, const char* text, ...)
1705 {
1706         char textbuffer[MAXBUF];
1707         char formatbuffer[MAXBUF];
1708         va_list argsPtr;
1709
1710         va_start(argsPtr, text);
1711         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1712         va_end(argsPtr);
1713
1714         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1715         std::string fmt = formatbuffer;
1716
1717         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1718         {
1719                 (*i)->Write(fmt);
1720         }
1721 }
1722
1723
1724 std::string User::ChannelList(User* source)
1725 {
1726         std::string list;
1727
1728         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1729         {
1730                 /* If the target is the same as the sender, let them see all their channels.
1731                  * If the channel is NOT private/secret OR the user shares a common channel
1732                  * If the user is an oper, and the <options:operspywhois> option is set.
1733                  */
1734                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1735                 {
1736                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1737                 }
1738         }
1739
1740         return list;
1741 }
1742
1743 void User::SplitChanList(User* dest, const std::string &cl)
1744 {
1745         std::string line;
1746         std::ostringstream prefix;
1747         std::string::size_type start, pos, length;
1748
1749         prefix << this->nick << " " << dest->nick << " :";
1750         line = prefix.str();
1751         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1752
1753         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1754         {
1755                 length = (pos == std::string::npos) ? cl.length() : pos;
1756
1757                 if (line.length() + namelen + length - start > 510)
1758                 {
1759                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1760                         line = prefix.str();
1761                 }
1762
1763                 if(pos == std::string::npos)
1764                 {
1765                         line.append(cl.substr(start, length - start));
1766                         break;
1767                 }
1768                 else
1769                 {
1770                         line.append(cl.substr(start, length - start + 1));
1771                 }
1772         }
1773
1774         if (line.length())
1775         {
1776                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1777         }
1778 }
1779
1780 unsigned int User::GetMaxChans()
1781 {
1782         return this->MaxChans;
1783 }
1784
1785
1786 /*
1787  * Sets a user's connection class.
1788  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1789  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1790  * then their ip will be taken as 'priority' anyway, so for example,
1791  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1792  */
1793 ConnectClass* User::SetClass(const std::string &explicit_name)
1794 {
1795         ConnectClass *found = NULL;
1796
1797         if (!IS_LOCAL(this))
1798                 return NULL;
1799
1800         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1801
1802         if (!explicit_name.empty())
1803         {
1804                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1805                 {
1806                         ConnectClass* c = *i;
1807
1808                         if (c->GetDisabled())
1809                                 continue; // can't possibly match, removed from conf
1810
1811                         if (explicit_name == c->GetName())
1812                         {
1813                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1814                                 found = c;
1815                         }
1816                 }
1817         }
1818         else
1819         {
1820                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1821                 {
1822                         ConnectClass* c = *i;
1823
1824                         if (c->GetType() == CC_ALLOW)
1825                         {
1826                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "ALLOW %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1827                         }
1828                         else
1829                         {
1830                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "DENY %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1831                         }
1832
1833                         /* if it's disabled, we can't match this one. */
1834                         if (c->GetDisabled())
1835                         {
1836                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class disabled");
1837                                 continue;
1838                         }
1839
1840                         /* check if host matches.. */
1841                         if (((!match(this->GetIPString(),c->GetHost(),true)) && (!match(this->host,c->GetHost()))))
1842                         {
1843                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1844                                 continue;
1845                         }
1846
1847                         /*
1848                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1849                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1850                          */
1851                         if (c->limit && (c->RefCount + 1 >= c->limit))
1852                         {
1853                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1854                                 continue;
1855                         }
1856
1857                         /* if it requires a port ... */
1858                         if (c->GetPort())
1859                         {
1860                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", c->GetPort());
1861
1862                                 /* and our port doesn't match, fail. */
1863                                 if (this->GetPort() != c->GetPort())
1864                                 {
1865                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Port match failed (%d)", this->GetPort());
1866                                         continue;
1867                                 }
1868                         }
1869
1870                         /* we stop at the first class that meets ALL critera. */
1871                         found = c;
1872                         break;
1873                 }
1874         }
1875
1876         /*
1877          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1878          */
1879         if (found)
1880         {
1881                 /* only fiddle with refcounts if they are already in a class .. */
1882                 if (this->MyClass)
1883                 {
1884                         if (found == this->MyClass) // no point changing this shit :P
1885                                 return this->MyClass;
1886                         this->MyClass->RefCount--;
1887                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1888                 }
1889
1890                 this->MyClass = found;
1891                 this->MyClass->RefCount++;
1892                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1893         }
1894
1895         return this->MyClass;
1896 }
1897
1898 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1899  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1900  * then their ip will be taken as 'priority' anyway, so for example,
1901  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1902  */
1903 ConnectClass* User::GetClass()
1904 {
1905         return this->MyClass;
1906 }
1907
1908 void User::PurgeEmptyChannels()
1909 {
1910         std::vector<Channel*> to_delete;
1911
1912         // firstly decrement the count on each channel
1913         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1914         {
1915                 f->first->RemoveAllPrefixes(this);
1916                 if (f->first->DelUser(this) == 0)
1917                 {
1918                         /* No users left in here, mark it for deletion */
1919                         try
1920                         {
1921                                 to_delete.push_back(f->first);
1922                         }
1923                         catch (...)
1924                         {
1925                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1926                         }
1927                 }
1928         }
1929
1930         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1931         {
1932                 Channel* thischan = *n;
1933                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1934                 if (i2 != ServerInstance->chanlist->end())
1935                 {
1936                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1937                         delete i2->second;
1938                         ServerInstance->chanlist->erase(i2);
1939                         this->chans.erase(*n);
1940                 }
1941         }
1942
1943         this->UnOper();
1944 }
1945
1946 void User::ShowMOTD()
1947 {
1948         if (!ServerInstance->Config->MOTD.size())
1949         {
1950                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick.c_str());
1951                 return;
1952         }
1953         this->WriteNumeric(375, "%s :%s message of the day", this->nick.c_str(), ServerInstance->Config->ServerName);
1954
1955         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1956                 this->WriteNumeric(372, "%s :- %s",this->nick.c_str(),i->c_str());
1957
1958         this->WriteNumeric(376, "%s :End of message of the day.", this->nick.c_str());
1959 }
1960
1961 void User::ShowRULES()
1962 {
1963         if (!ServerInstance->Config->RULES.size())
1964         {
1965                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick.c_str());
1966                 return;
1967         }
1968
1969         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick.c_str(),ServerInstance->Config->ServerName);
1970
1971         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1972                 this->WriteNumeric(232, "%s :- %s",this->nick.c_str(),i->c_str());
1973
1974         this->WriteNumeric(309, "%s :End of RULES command.",this->nick.c_str());
1975 }
1976
1977 void User::HandleEvent(EventType et, int errornum)
1978 {
1979         if (this->quitting) // drop everything, user is due to be quit
1980                 return;
1981
1982         /* WARNING: May delete this user! */
1983         int thisfd = this->GetFd();
1984
1985         try
1986         {
1987                 switch (et)
1988                 {
1989                         case EVENT_READ:
1990                                 ServerInstance->ProcessUser(this);
1991                         break;
1992                         case EVENT_WRITE:
1993                                 this->FlushWriteBuf();
1994                         break;
1995                         case EVENT_ERROR:
1996                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1997                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1998                         break;
1999                 }
2000         }
2001         catch (...)
2002         {
2003                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
2004         }
2005
2006         /* If the user has raised an error whilst being processed, quit them now we're safe to */
2007         if ((ServerInstance->SE->GetRef(thisfd) == this))
2008         {
2009                 if (!WriteError.empty())
2010                 {
2011                         ServerInstance->Users->QuitUser(this, GetWriteError());
2012                 }
2013         }
2014 }
2015
2016 void User::SetOperQuit(const std::string &oquit)
2017 {
2018         operquitmsg = oquit;
2019 }
2020
2021 const std::string& User::GetOperQuit()
2022 {
2023         return operquitmsg;
2024 }
2025
2026 void User::IncreasePenalty(int increase)
2027 {
2028         this->Penalty += increase;
2029 }
2030
2031 void User::DecreasePenalty(int decrease)
2032 {
2033         this->Penalty -= decrease;
2034 }
2035
2036 VisData::VisData()
2037 {
2038 }
2039
2040 VisData::~VisData()
2041 {
2042 }
2043
2044 bool VisData::VisibleTo(User* user)
2045 {
2046         return true;
2047 }
2048