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, ServerInstance->Config->Limits.NickMax);
 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 void 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;
 903                         }
 904                 }
 905         }
 906 }
 907
 908 void User::FullConnect()
 909 {
 910         ServerInstance->stats->statsConnects++;
 911         this->idle_lastmsg = ServerInstance->Time();
 912
 913         /*
 914          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 915          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 916          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 917          * Don't remove this! -- w00t
 918          */
 919         this->SetClass();
 920
 921         /* Check the password, if one is required by the user's connect class.
 922          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 923          */
 924         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 925         {
 926                 ServerInstance->Users->QuitUser(this, "Invalid password");
 927                 return;
 928         }
 929
 930         CheckLines();
 931
 932         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 933         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());
 934         this->WriteNumeric(002, "%s :Your host is %s, running version InspIRCd-1.2",this->nick.c_str(),ServerInstance->Config->ServerName);
 935         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 936         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());
 937
 938         ServerInstance->Config->Send005(this);
 939         this->WriteNumeric(42, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 940
 941
 942         this->ShowMOTD();
 943
 944         /* Now registered */
 945         if (ServerInstance->Users->unregistered_count)
 946                 ServerInstance->Users->unregistered_count--;
 947
 948         /* Trigger LUSERS output, give modules a chance too */
 949         int MOD_RESULT = 0;
 950         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", std::vector<std::string>(), this, true, "LUSERS"));
 951         if (!MOD_RESULT)
 952                 ServerInstance->CallCommandHandler("LUSERS", std::vector<std::string>(), this);
 953
 954         /*
 955          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 956          * for a user that doesn't exist yet.
 957          */
 958         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 959
 960         this->registered = REG_ALL;
 961
 962         ServerInstance->PI->Introduce(this);
 963
 964         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 965
 966         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());
 967         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 968         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 969 }
 970
 971 /** User::UpdateNick()
 972  * re-allocates a nick in the user_hash after they change nicknames,
 973  * returns a pointer to the new user as it may have moved
 974  */
 975 User* User::UpdateNickHash(const char* New)
 976 {
 977         //user_hash::iterator newnick;
 978         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 979
 980         if (!irc::string(this->nick.c_str()).compare(New))
 981                 return oldnick->second;
 982
 983         if (oldnick == ServerInstance->Users->clientlist->end())
 984                 return NULL; /* doesnt exist */
 985
 986         User* olduser = oldnick->second;
 987         (*(ServerInstance->Users->clientlist))[New] = olduser;
 988         ServerInstance->Users->clientlist->erase(oldnick);
 989         return olduser;
 990 }
 991
 992 void User::InvalidateCache()
 993 {
 994         /* Invalidate cache */
 995         cached_fullhost.clear();
 996         cached_hostip.clear();
 997         cached_makehost.clear();
 998         cached_fullrealhost.clear();
 999 }
1000
1001 bool User::ForceNickChange(const char* newnick)
1002 {
1003         int MOD_RESULT = 0;
1004
1005         this->InvalidateCache();
1006
1007         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1008
1009         if (MOD_RESULT)
1010         {
1011                 ServerInstance->stats->statsCollisions++;
1012                 return false;
1013         }
1014
1015         std::deque<classbase*> dummy;
1016         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1017         if (nickhandler) // wtfbbq, when would this not be here
1018         {
1019                 std::vector<std::string> parameters;
1020                 nickhandler->HandleInternal(1, dummy);
1021                 parameters.push_back(newnick);
1022                 bool result = (ServerInstance->Parser->CallHandler("NICK", parameters, this) == CMD_SUCCESS);
1023                 nickhandler->HandleInternal(0, dummy);
1024                 return result;
1025         }
1026
1027         // Unreachable, we hope
1028         return false;
1029 }
1030
1031 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1032 {
1033         this->cachedip = "";
1034
1035         switch (protocol_family)
1036         {
1037 #ifdef SUPPORT_IP6LINKS
1038                 case AF_INET6:
1039                 {
1040                         sockaddr_in6* sin = new sockaddr_in6;
1041                         sin->sin6_family = AF_INET6;
1042                         sin->sin6_port = port;
1043                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1044                         this->ip = (sockaddr*)sin;
1045                 }
1046                 break;
1047 #endif
1048                 case AF_INET:
1049                 {
1050                         sockaddr_in* sin = new sockaddr_in;
1051                         sin->sin_family = AF_INET;
1052                         sin->sin_port = port;
1053                         inet_pton(AF_INET, sip, &sin->sin_addr);
1054                         this->ip = (sockaddr*)sin;
1055                 }
1056                 break;
1057                 default:
1058                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick.c_str());
1059                 break;
1060         }
1061 }
1062
1063 int User::GetPort()
1064 {
1065         if (this->ip == NULL)
1066                 return 0;
1067
1068         switch (this->GetProtocolFamily())
1069         {
1070 #ifdef SUPPORT_IP6LINKS
1071                 case AF_INET6:
1072                 {
1073                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1074                         return sin->sin6_port;
1075                 }
1076                 break;
1077 #endif
1078                 case AF_INET:
1079                 {
1080                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1081                         return sin->sin_port;
1082                 }
1083                 break;
1084                 default:
1085                 break;
1086         }
1087         return 0;
1088 }
1089
1090 int User::GetProtocolFamily()
1091 {
1092         if (this->ip == NULL)
1093                 return 0;
1094
1095         sockaddr_in* sin = (sockaddr_in*)this->ip;
1096         return sin->sin_family;
1097 }
1098
1099 /*
1100  * XXX the duplication here is horrid..
1101  * do we really need two methods doing essentially the same thing?
1102  */
1103 const char* User::GetIPString(bool translate4in6)
1104 {
1105         static char buf[1024];
1106
1107         if (this->ip == NULL)
1108                 return "";
1109
1110         if (!this->cachedip.empty())
1111                 return this->cachedip.c_str();
1112
1113         switch (this->GetProtocolFamily())
1114         {
1115 #ifdef SUPPORT_IP6LINKS
1116                 case AF_INET6:
1117                 {
1118                         static char temp[1024];
1119
1120                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1121                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1122                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1123                         if (*buf == ':')
1124                         {
1125                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1126                                 *temp = '0';
1127                                 if (translate4in6 && !strncmp(temp, "0::ffff:", 8))
1128                                 {
1129                                         this->cachedip = temp + 8;
1130                                         return temp + 8;
1131                                 }
1132
1133                                 this->cachedip = temp;
1134                                 return temp;
1135                         }
1136
1137                         this->cachedip = buf;
1138                         return buf;
1139                 }
1140                 break;
1141 #endif
1142                 case AF_INET:
1143                 {
1144                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1145                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1146                         this->cachedip = buf;
1147                         return buf;
1148                 }
1149                 break;
1150                 default:
1151                 break;
1152         }
1153
1154         // Unreachable, probably
1155         return "";
1156 }
1157
1158 /** NOTE: We cannot pass a const reference to this method.
1159  * The string is changed by the workings of the method,
1160  * so that if we pass const ref, we end up copying it to
1161  * something we can change anyway. Makes sense to just let
1162  * the compiler do that copy for us.
1163  */
1164 void User::Write(std::string text)
1165 {
1166         if (!ServerInstance->SE->BoundsCheckFd(this))
1167                 return;
1168
1169         try
1170         {
1171                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1172                 text.append("\r\n");
1173         }
1174         catch (...)
1175         {
1176                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1177                 return;
1178         }
1179
1180         if (this->io)
1181         {
1182                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1183                  * implement their own buffering mechanisms
1184                  */
1185                 try
1186                 {
1187                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1188                 }
1189                 catch (CoreException& modexcept)
1190                 {
1191                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1192                 }
1193         }
1194         else
1195         {
1196                 this->AddWriteBuf(text);
1197         }
1198         ServerInstance->stats->statsSent += text.length();
1199         this->ServerInstance->SE->WantWrite(this);
1200 }
1201
1202 /** Write()
1203  */
1204 void User::Write(const char *text, ...)
1205 {
1206         va_list argsPtr;
1207         char textbuffer[MAXBUF];
1208
1209         va_start(argsPtr, text);
1210         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1211         va_end(argsPtr);
1212
1213         this->Write(std::string(textbuffer));
1214 }
1215
1216 void User::WriteServ(const std::string& text)
1217 {
1218         char textbuffer[MAXBUF];
1219
1220         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1221         this->Write(std::string(textbuffer));
1222 }
1223
1224 /** WriteServ()
1225  *  Same as Write(), except `text' is prefixed with `:server.name '.
1226  */
1227 void User::WriteServ(const char* text, ...)
1228 {
1229         va_list argsPtr;
1230         char textbuffer[MAXBUF];
1231
1232         va_start(argsPtr, text);
1233         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1234         va_end(argsPtr);
1235
1236         this->WriteServ(std::string(textbuffer));
1237 }
1238
1239
1240 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1241 {
1242         va_list argsPtr;
1243         char textbuffer[MAXBUF];
1244
1245         va_start(argsPtr, text);
1246         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1247         va_end(argsPtr);
1248
1249         this->WriteNumeric(numeric, std::string(textbuffer));
1250 }
1251
1252 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1253 {
1254         char textbuffer[MAXBUF];
1255         int MOD_RESULT = 0;
1256
1257         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1258
1259         if (MOD_RESULT)
1260                 return;
1261
1262         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1263         this->Write(std::string(textbuffer));
1264 }
1265
1266 void User::WriteFrom(User *user, const std::string &text)
1267 {
1268         char tb[MAXBUF];
1269
1270         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1271
1272         this->Write(std::string(tb));
1273 }
1274
1275
1276 /* write text from an originating user to originating user */
1277
1278 void User::WriteFrom(User *user, const char* text, ...)
1279 {
1280         va_list argsPtr;
1281         char textbuffer[MAXBUF];
1282
1283         va_start(argsPtr, text);
1284         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1285         va_end(argsPtr);
1286
1287         this->WriteFrom(user, std::string(textbuffer));
1288 }
1289
1290
1291 /* write text to an destination user from a source user (e.g. user privmsg) */
1292
1293 void User::WriteTo(User *dest, const char *data, ...)
1294 {
1295         char textbuffer[MAXBUF];
1296         va_list argsPtr;
1297
1298         va_start(argsPtr, data);
1299         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1300         va_end(argsPtr);
1301
1302         this->WriteTo(dest, std::string(textbuffer));
1303 }
1304
1305 void User::WriteTo(User *dest, const std::string &data)
1306 {
1307         dest->WriteFrom(this, data);
1308 }
1309
1310
1311 void User::WriteCommon(const char* text, ...)
1312 {
1313         char textbuffer[MAXBUF];
1314         va_list argsPtr;
1315
1316         if (this->registered != REG_ALL)
1317                 return;
1318
1319         va_start(argsPtr, text);
1320         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1321         va_end(argsPtr);
1322
1323         this->WriteCommon(std::string(textbuffer));
1324 }
1325
1326 void User::WriteCommon(const std::string &text)
1327 {
1328         bool sent_to_at_least_one = false;
1329         char tb[MAXBUF];
1330
1331         if (this->registered != REG_ALL)
1332                 return;
1333
1334         uniq_id++;
1335
1336         if (!already_sent)
1337                 InitializeAlreadySent(ServerInstance->SE);
1338
1339         /* We dont want to be doing this n times, just once */
1340         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost().c_str(),text.c_str());
1341         std::string out = tb;
1342
1343         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1344         {
1345                 CUList* ulist = v->first->GetUsers();
1346                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1347                 {
1348                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1349                         {
1350                                 already_sent[i->first->fd] = uniq_id;
1351                                 i->first->Write(out);
1352                                 sent_to_at_least_one = true;
1353                         }
1354                 }
1355         }
1356
1357         /*
1358          * if the user was not in any channels, no users will receive the text. Make sure the user
1359          * receives their OWN message for WriteCommon
1360          */
1361         if (!sent_to_at_least_one)
1362         {
1363                 this->Write(std::string(tb));
1364         }
1365 }
1366
1367
1368 /* write a formatted string to all users who share at least one common
1369  * channel, NOT including the source user e.g. for use in QUIT
1370  */
1371
1372 void User::WriteCommonExcept(const char* text, ...)
1373 {
1374         char textbuffer[MAXBUF];
1375         va_list argsPtr;
1376
1377         va_start(argsPtr, text);
1378         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1379         va_end(argsPtr);
1380
1381         this->WriteCommonExcept(std::string(textbuffer));
1382 }
1383
1384 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1385 {
1386         char tb1[MAXBUF];
1387         char tb2[MAXBUF];
1388
1389         if (this->registered != REG_ALL)
1390                 return;
1391
1392         uniq_id++;
1393
1394         if (!already_sent)
1395                 InitializeAlreadySent(ServerInstance->SE);
1396
1397         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1398         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1399         std::string out1 = tb1;
1400         std::string out2 = tb2;
1401
1402         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1403         {
1404                 CUList *ulist = v->first->GetUsers();
1405                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1406                 {
1407                         if (this != i->first)
1408                         {
1409                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1410                                 {
1411                                         already_sent[i->first->fd] = uniq_id;
1412                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1413                                 }
1414                         }
1415                 }
1416         }
1417 }
1418
1419 void User::WriteCommonExcept(const std::string &text)
1420 {
1421         char tb1[MAXBUF];
1422         std::string out1;
1423
1424         if (this->registered != REG_ALL)
1425                 return;
1426
1427         uniq_id++;
1428
1429         if (!already_sent)
1430                 InitializeAlreadySent(ServerInstance->SE);
1431
1432         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost().c_str(),text.c_str());
1433         out1 = tb1;
1434
1435         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1436         {
1437                 CUList *ulist = v->first->GetUsers();
1438                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1439                 {
1440                         if (this != i->first)
1441                         {
1442                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1443                                 {
1444                                         already_sent[i->first->fd] = uniq_id;
1445                                         i->first->Write(out1);
1446                                 }
1447                         }
1448                 }
1449         }
1450
1451 }
1452
1453 void User::WriteWallOps(const std::string &text)
1454 {
1455         if (!IS_LOCAL(this))
1456                 return;
1457
1458         std::string wallop("WALLOPS :");
1459         wallop.append(text);
1460
1461         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1462         {
1463                 User* t = *i;
1464                 if (t->IsModeSet('w'))
1465                         this->WriteTo(t,wallop);
1466         }
1467 }
1468
1469 void User::WriteWallOps(const char* text, ...)
1470 {
1471         if (!IS_LOCAL(this))
1472                 return;
1473
1474         char textbuffer[MAXBUF];
1475         va_list argsPtr;
1476
1477         va_start(argsPtr, text);
1478         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1479         va_end(argsPtr);
1480
1481         this->WriteWallOps(std::string(textbuffer));
1482 }
1483
1484 /* return 0 or 1 depending if users u and u2 share one or more common channels
1485  * (used by QUIT, NICK etc which arent channel specific notices)
1486  *
1487  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1488  * the first users channels then the second users channels within the outer loop,
1489  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1490  * all possible iterations). However this new function instead checks against the
1491  * channel's userlist in the inner loop which is a std::map<User*,User*>
1492  * and saves us time as we already know what pointer value we are after.
1493  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1494  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1495  */
1496 bool User::SharesChannelWith(User *other)
1497 {
1498         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1499                 return false;
1500
1501         /* Outer loop */
1502         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1503         {
1504                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1505                  * by replacing it with a map::find which *should* be more efficient
1506                  */
1507                 if (i->first->HasUser(other))
1508                         return true;
1509         }
1510         return false;
1511 }
1512
1513 bool User::ChangeName(const char* gecos)
1514 {
1515         if (!this->fullname.compare(gecos))
1516                 return true;
1517
1518         if (IS_LOCAL(this))
1519         {
1520                 int MOD_RESULT = 0;
1521                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1522                 if (MOD_RESULT)
1523                         return false;
1524                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1525         }
1526         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1527
1528         return true;
1529 }
1530
1531 bool User::ChangeDisplayedHost(const char* shost)
1532 {
1533         if (dhost == shost)
1534                 return true;
1535
1536         if (IS_LOCAL(this))
1537         {
1538                 int MOD_RESULT = 0;
1539                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1540                 if (MOD_RESULT)
1541                         return false;
1542                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1543         }
1544
1545         if (this->ServerInstance->Config->CycleHosts)
1546                 this->WriteCommonExcept("QUIT :Changing hosts");
1547
1548         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1549         this->dhost.assign(shost, 0, 64);
1550
1551         this->InvalidateCache();
1552
1553         if (this->ServerInstance->Config->CycleHosts)
1554         {
1555                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1556                 {
1557                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name.c_str());
1558                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1559                         if (n.length() > 0)
1560                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name.c_str(), n.c_str());
1561                 }
1562         }
1563
1564         if (IS_LOCAL(this))
1565                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1566
1567         return true;
1568 }
1569
1570 bool User::ChangeIdent(const char* newident)
1571 {
1572         if (!this->ident.compare(newident))
1573                 return true;
1574
1575         if (this->ServerInstance->Config->CycleHosts)
1576                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1577
1578         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1579
1580         this->InvalidateCache();
1581
1582         if (this->ServerInstance->Config->CycleHosts)
1583         {
1584                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1585                 {
1586                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name.c_str());
1587                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1588                         if (n.length() > 0)
1589                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name.c_str(), n.c_str());
1590                 }
1591         }
1592
1593         return true;
1594 }
1595
1596 void User::SendAll(const char* command, const char* text, ...)
1597 {
1598         char textbuffer[MAXBUF];
1599         char formatbuffer[MAXBUF];
1600         va_list argsPtr;
1601
1602         va_start(argsPtr, text);
1603         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1604         va_end(argsPtr);
1605
1606         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1607         std::string fmt = formatbuffer;
1608
1609         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1610         {
1611                 (*i)->Write(fmt);
1612         }
1613 }
1614
1615
1616 std::string User::ChannelList(User* source)
1617 {
1618         std::string list;
1619
1620         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1621         {
1622                 /* If the target is the same as the sender, let them see all their channels.
1623                  * If the channel is NOT private/secret OR the user shares a common channel
1624                  * If the user is an oper, and the <options:operspywhois> option is set.
1625                  */
1626                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1627                 {
1628                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1629                 }
1630         }
1631
1632         return list;
1633 }
1634
1635 void User::SplitChanList(User* dest, const std::string &cl)
1636 {
1637         std::string line;
1638         std::ostringstream prefix;
1639         std::string::size_type start, pos, length;
1640
1641         prefix << this->nick << " " << dest->nick << " :";
1642         line = prefix.str();
1643         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1644
1645         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1646         {
1647                 length = (pos == std::string::npos) ? cl.length() : pos;
1648
1649                 if (line.length() + namelen + length - start > 510)
1650                 {
1651                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1652                         line = prefix.str();
1653                 }
1654
1655                 if(pos == std::string::npos)
1656                 {
1657                         line.append(cl.substr(start, length - start));
1658                         break;
1659                 }
1660                 else
1661                 {
1662                         line.append(cl.substr(start, length - start + 1));
1663                 }
1664         }
1665
1666         if (line.length())
1667         {
1668                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1669         }
1670 }
1671
1672 unsigned int User::GetMaxChans()
1673 {
1674         return this->MaxChans;
1675 }
1676
1677
1678 /*
1679  * Sets a user's connection class.
1680  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1681  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1682  * then their ip will be taken as 'priority' anyway, so for example,
1683  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1684  */
1685 ConnectClass* User::SetClass(const std::string &explicit_name)
1686 {
1687         ConnectClass *found = NULL;
1688
1689         if (!IS_LOCAL(this))
1690                 return NULL;
1691
1692         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1693
1694         if (!explicit_name.empty())
1695         {
1696                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1697                 {
1698                         ConnectClass* c = *i;
1699
1700                         if (c->GetDisabled())
1701                                 continue; // can't possibly match, removed from conf
1702
1703                         if (explicit_name == c->GetName())
1704                         {
1705                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1706                                 found = c;
1707                         }
1708                 }
1709         }
1710         else
1711         {
1712                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1713                 {
1714                         ConnectClass* c = *i;
1715
1716                         if (c->GetType() == CC_ALLOW)
1717                         {
1718                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "ALLOW %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1719                         }
1720                         else
1721                         {
1722                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "DENY %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1723                         }
1724
1725                         /* if it's disabled, we can't match this one. */
1726                         if (c->GetDisabled())
1727                         {
1728                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class disabled");
1729                                 continue;
1730                         }
1731
1732                         /* check if host matches.. */
1733                         if (((!match(this->GetIPString(),c->GetHost(),true)) && (!match(this->host,c->GetHost()))))
1734                         {
1735                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1736                                 continue;
1737                         }
1738
1739                         /*
1740                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1741                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1742                          */
1743                         if (c->limit && (c->RefCount + 1 >= c->limit))
1744                         {
1745                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1746                                 continue;
1747                         }
1748
1749                         /* if it requires a port ... */
1750                         if (c->GetPort())
1751                         {
1752                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", c->GetPort());
1753
1754                                 /* and our port doesn't match, fail. */
1755                                 if (this->GetPort() != c->GetPort())
1756                                 {
1757                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Port match failed (%d)", this->GetPort());
1758                                         continue;
1759                                 }
1760                         }
1761
1762                         /* we stop at the first class that meets ALL critera. */
1763                         found = c;
1764                         break;
1765                 }
1766         }
1767
1768         /*
1769          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1770          */
1771         if (found)
1772         {
1773                 /* only fiddle with refcounts if they are already in a class .. */
1774                 if (this->MyClass)
1775                 {
1776                         if (found == this->MyClass) // no point changing this shit :P
1777                                 return this->MyClass;
1778                         this->MyClass->RefCount--;
1779                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1780                 }
1781
1782                 this->MyClass = found;
1783                 this->MyClass->RefCount++;
1784                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1785         }
1786
1787         return this->MyClass;
1788 }
1789
1790 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1791  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1792  * then their ip will be taken as 'priority' anyway, so for example,
1793  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1794  */
1795 ConnectClass* User::GetClass()
1796 {
1797         return this->MyClass;
1798 }
1799
1800 void User::PurgeEmptyChannels()
1801 {
1802         std::vector<Channel*> to_delete;
1803
1804         // firstly decrement the count on each channel
1805         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1806         {
1807                 f->first->RemoveAllPrefixes(this);
1808                 if (f->first->DelUser(this) == 0)
1809                 {
1810                         /* No users left in here, mark it for deletion */
1811                         try
1812                         {
1813                                 to_delete.push_back(f->first);
1814                         }
1815                         catch (...)
1816                         {
1817                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1818                         }
1819                 }
1820         }
1821
1822         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1823         {
1824                 Channel* thischan = *n;
1825                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1826                 if (i2 != ServerInstance->chanlist->end())
1827                 {
1828                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1829                         delete i2->second;
1830                         ServerInstance->chanlist->erase(i2);
1831                         this->chans.erase(*n);
1832                 }
1833         }
1834
1835         this->UnOper();
1836 }
1837
1838 void User::ShowMOTD()
1839 {
1840         if (!ServerInstance->Config->MOTD.size())
1841         {
1842                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick.c_str());
1843                 return;
1844         }
1845         this->WriteNumeric(375, "%s :%s message of the day", this->nick.c_str(), ServerInstance->Config->ServerName);
1846
1847         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1848                 this->WriteNumeric(372, "%s :- %s",this->nick.c_str(),i->c_str());
1849
1850         this->WriteNumeric(376, "%s :End of message of the day.", this->nick.c_str());
1851 }
1852
1853 void User::ShowRULES()
1854 {
1855         if (!ServerInstance->Config->RULES.size())
1856         {
1857                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick.c_str());
1858                 return;
1859         }
1860
1861         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick.c_str(),ServerInstance->Config->ServerName);
1862
1863         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1864                 this->WriteNumeric(232, "%s :- %s",this->nick.c_str(),i->c_str());
1865
1866         this->WriteNumeric(309, "%s :End of RULES command.",this->nick.c_str());
1867 }
1868
1869 void User::HandleEvent(EventType et, int errornum)
1870 {
1871         if (this->quitting) // drop everything, user is due to be quit
1872                 return;
1873
1874         /* WARNING: May delete this user! */
1875         int thisfd = this->GetFd();
1876
1877         try
1878         {
1879                 switch (et)
1880                 {
1881                         case EVENT_READ:
1882                                 ServerInstance->ProcessUser(this);
1883                         break;
1884                         case EVENT_WRITE:
1885                                 this->FlushWriteBuf();
1886                         break;
1887                         case EVENT_ERROR:
1888                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1889                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1890                         break;
1891                 }
1892         }
1893         catch (...)
1894         {
1895                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1896         }
1897
1898         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1899         if ((ServerInstance->SE->GetRef(thisfd) == this))
1900         {
1901                 if (!WriteError.empty())
1902                 {
1903                         ServerInstance->Users->QuitUser(this, GetWriteError());
1904                 }
1905         }
1906 }
1907
1908 void User::SetOperQuit(const std::string &oquit)
1909 {
1910         operquitmsg = oquit;
1911 }
1912
1913 const std::string& User::GetOperQuit()
1914 {
1915         return operquitmsg;
1916 }
1917
1918 void User::IncreasePenalty(int increase)
1919 {
1920         this->Penalty += increase;
1921 }
1922
1923 void User::DecreasePenalty(int decrease)
1924 {
1925         this->Penalty -= decrease;
1926 }
1927
1928 VisData::VisData()
1929 {
1930 }
1931
1932 VisData::~VisData()
1933 {
1934 }
1935
1936 bool VisData::VisibleTo(User* user)
1937 {
1938         return true;
1939 }
1940