src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include <stdarg.h>
  16 #include "socketengine.h"
  17 #include "xline.h"
  18 #include "bancache.h"
  19 #include "commands/cmd_whowas.h"
  20
  21 typedef unsigned int uniq_id_t;
  22 class sent
  23 {
  24         uniq_id_t uniq_id;
  25         uniq_id_t* array;
  26         void init()
  27         {
  28                 if (!array)
  29                         array = new uniq_id_t[ServerInstance->SE->GetMaxFds()];
  30                 memset(array, 0, ServerInstance->SE->GetMaxFds() * sizeof(uniq_id_t));
  31                 uniq_id++;
  32         }
  33  public:
  34         sent() : uniq_id(static_cast<uniq_id_t>(-1)), array(NULL) {}
  35         inline uniq_id_t operator++()
  36         {
  37                 if (++uniq_id == 0)
  38                         init();
  39                 return uniq_id;
  40         }
  41         inline uniq_id_t& operator[](int i)
  42         {
  43                 return array[i];
  44         }
  45         ~sent()
  46         {
  47                 delete[] array;
  48         }
  49 };
  50
  51 static sent already_sent;
  52
  53 std::string User::ProcessNoticeMasks(const char *sm)
  54 {
  55         bool adding = true, oldadding = false;
  56         const char *c = sm;
  57         std::string output;
  58
  59         while (c && *c)
  60         {
  61                 switch (*c)
  62                 {
  63                         case '+':
  64                                 adding = true;
  65                         break;
  66                         case '-':
  67                                 adding = false;
  68                         break;
  69                         case '*':
  70                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  71                                 {
  72                                         if (ServerInstance->SNO->IsEnabled(d))
  73                                         {
  74                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  75                                                 {
  76                                                         if ((oldadding != adding) || (!output.length()))
  77                                                                 output += (adding ? '+' : '-');
  78
  79                                                         this->SetNoticeMask(d, adding);
  80
  81                                                         output += d;
  82                                                 }
  83                                         }
  84                                         oldadding = adding;
  85                                 }
  86                         break;
  87                         default:
  88                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  89                                 {
  90                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  91                                         {
  92                                                 if ((oldadding != adding) || (!output.length()))
  93                                                         output += (adding ? '+' : '-');
  94
  95                                                 this->SetNoticeMask(*c, adding);
  96
  97                                                 output += *c;
  98                                         }
  99                                 }
 100                                 else
 101                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
 102
 103                                 oldadding = adding;
 104                         break;
 105                 }
 106
 107                 *c++;
 108         }
 109
 110         std::string s = this->FormatNoticeMasks();
 111         if (s.length() == 0)
 112         {
 113                 this->modes[UM_SNOMASK] = false;
 114         }
 115
 116         return output;
 117 }
 118
 119 void LocalUser::StartDNSLookup()
 120 {
 121         try
 122         {
 123                 bool cached = false;
 124                 const char* sip = this->GetIPString();
 125                 UserResolver *res_reverse;
 126
 127                 QueryType resolvtype = this->client_sa.sa.sa_family == AF_INET6 ? DNS_QUERY_PTR6 : DNS_QUERY_PTR4;
 128                 res_reverse = new UserResolver(this, sip, resolvtype, cached);
 129
 130                 ServerInstance->AddResolver(res_reverse, cached);
 131         }
 132         catch (CoreException& e)
 133         {
 134                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 135         }
 136 }
 137
 138 bool User::IsNoticeMaskSet(unsigned char sm)
 139 {
 140         if (!isalpha(sm))
 141                 return false;
 142         return (snomasks[sm-65]);
 143 }
 144
 145 void User::SetNoticeMask(unsigned char sm, bool value)
 146 {
 147         if (!isalpha(sm))
 148                 return;
 149         snomasks[sm-65] = value;
 150 }
 151
 152 const char* User::FormatNoticeMasks()
 153 {
 154         static char data[MAXBUF];
 155         int offset = 0;
 156
 157         for (int n = 0; n < 64; n++)
 158         {
 159                 if (snomasks[n])
 160                         data[offset++] = n+65;
 161         }
 162
 163         data[offset] = 0;
 164         return data;
 165 }
 166
 167 bool User::IsModeSet(unsigned char m)
 168 {
 169         if (!isalpha(m))
 170                 return false;
 171         return (modes[m-65]);
 172 }
 173
 174 void User::SetMode(unsigned char m, bool value)
 175 {
 176         if (!isalpha(m))
 177                 return;
 178         modes[m-65] = value;
 179 }
 180
 181 const char* User::FormatModes(bool showparameters)
 182 {
 183         static char data[MAXBUF];
 184         std::string params;
 185         int offset = 0;
 186
 187         for (unsigned char n = 0; n < 64; n++)
 188         {
 189                 if (modes[n])
 190                 {
 191                         data[offset++] = n + 65;
 192                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 193                         if (showparameters && mh && mh->GetNumParams(true))
 194                         {
 195                                 std::string p = mh->GetUserParameter(this);
 196                                 if (p.length())
 197                                         params.append(" ").append(p);
 198                         }
 199                 }
 200         }
 201         data[offset] = 0;
 202         strlcat(data, params.c_str(), MAXBUF);
 203         return data;
 204 }
 205
 206 void User::DecrementModes()
 207 {
 208         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 209         for (unsigned char n = 'A'; n <= 'z'; n++)
 210         {
 211                 if (modes[n-65])
 212                 {
 213                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 214                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 215                         if (mh)
 216                         {
 217                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 218                                 mh->ChangeCount(-1);
 219                         }
 220                 }
 221         }
 222 }
 223
 224 User::User(const std::string &uid, const std::string& sid, int type)
 225         : uuid(uid), server(sid), usertype(type)
 226 {
 227         age = ServerInstance->Time();
 228         signon = idle_lastmsg = 0;
 229         registered = 0;
 230         quietquit = quitting = exempt = dns_done = false;
 231         client_sa.sa.sa_family = AF_UNSPEC;
 232
 233         ServerInstance->Logs->Log("USERS", DEBUG, "New UUID for user: %s", uuid.c_str());
 234
 235         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 236         if (finduuid == ServerInstance->Users->uuidlist->end())
 237                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 238         else
 239                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 240 }
 241
 242 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 243         : User(ServerInstance->GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL)
 244 {
 245         bytes_in = bytes_out = cmds_in = cmds_out = 0;
 246         server_sa.sa.sa_family = AF_UNSPEC;
 247         Penalty = 0;
 248         lastping = nping = 0;
 249         SetFd(myfd);
 250         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 251         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 252 }
 253
 254 User::~User()
 255 {
 256         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 257                 ServerInstance->Logs->Log("USERS", ERROR, "User destructor for %s called without cull", uuid.c_str());
 258 }
 259
 260 const std::string& User::MakeHost()
 261 {
 262         if (!this->cached_makehost.empty())
 263                 return this->cached_makehost;
 264
 265         char nhost[MAXBUF];
 266         /* This is much faster than snprintf */
 267         char* t = nhost;
 268         for(const char* n = ident.c_str(); *n; n++)
 269                 *t++ = *n;
 270         *t++ = '@';
 271         for(const char* n = host.c_str(); *n; n++)
 272                 *t++ = *n;
 273         *t = 0;
 274
 275         this->cached_makehost.assign(nhost);
 276
 277         return this->cached_makehost;
 278 }
 279
 280 const std::string& User::MakeHostIP()
 281 {
 282         if (!this->cached_hostip.empty())
 283                 return this->cached_hostip;
 284
 285         char ihost[MAXBUF];
 286         /* This is much faster than snprintf */
 287         char* t = ihost;
 288         for(const char* n = ident.c_str(); *n; n++)
 289                 *t++ = *n;
 290         *t++ = '@';
 291         for(const char* n = this->GetIPString(); *n; n++)
 292                 *t++ = *n;
 293         *t = 0;
 294
 295         this->cached_hostip = ihost;
 296
 297         return this->cached_hostip;
 298 }
 299
 300 const std::string& User::GetFullHost()
 301 {
 302         if (!this->cached_fullhost.empty())
 303                 return this->cached_fullhost;
 304
 305         char result[MAXBUF];
 306         char* t = result;
 307         for(const char* n = nick.c_str(); *n; n++)
 308                 *t++ = *n;
 309         *t++ = '!';
 310         for(const char* n = ident.c_str(); *n; n++)
 311                 *t++ = *n;
 312         *t++ = '@';
 313         for(const char* n = dhost.c_str(); *n; n++)
 314                 *t++ = *n;
 315         *t = 0;
 316
 317         this->cached_fullhost = result;
 318
 319         return this->cached_fullhost;
 320 }
 321
 322 char* User::MakeWildHost()
 323 {
 324         static char nresult[MAXBUF];
 325         char* t = nresult;
 326         *t++ = '*';     *t++ = '!';
 327         *t++ = '*';     *t++ = '@';
 328         for(const char* n = dhost.c_str(); *n; n++)
 329                 *t++ = *n;
 330         *t = 0;
 331         return nresult;
 332 }
 333
 334 const std::string& User::GetFullRealHost()
 335 {
 336         if (!this->cached_fullrealhost.empty())
 337                 return this->cached_fullrealhost;
 338
 339         char fresult[MAXBUF];
 340         char* t = fresult;
 341         for(const char* n = nick.c_str(); *n; n++)
 342                 *t++ = *n;
 343         *t++ = '!';
 344         for(const char* n = ident.c_str(); *n; n++)
 345                 *t++ = *n;
 346         *t++ = '@';
 347         for(const char* n = host.c_str(); *n; n++)
 348                 *t++ = *n;
 349         *t = 0;
 350
 351         this->cached_fullrealhost = fresult;
 352
 353         return this->cached_fullrealhost;
 354 }
 355
 356 bool LocalUser::IsInvited(const irc::string &channel)
 357 {
 358         time_t now = ServerInstance->Time();
 359         InvitedList::iterator safei;
 360         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 361         {
 362                 if (channel == i->first)
 363                 {
 364                         if (i->second != 0 && now > i->second)
 365                         {
 366                                 /* Expired invite, remove it. */
 367                                 safei = i;
 368                                 --i;
 369                                 invites.erase(safei);
 370                                 continue;
 371                         }
 372                         return true;
 373                 }
 374         }
 375         return false;
 376 }
 377
 378 InvitedList* LocalUser::GetInviteList()
 379 {
 380         time_t now = ServerInstance->Time();
 381         /* Weed out expired invites here. */
 382         InvitedList::iterator safei;
 383         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 384         {
 385                 if (i->second != 0 && now > i->second)
 386                 {
 387                         /* Expired invite, remove it. */
 388                         safei = i;
 389                         --i;
 390                         invites.erase(safei);
 391                 }
 392         }
 393         return &invites;
 394 }
 395
 396 void LocalUser::InviteTo(const irc::string &channel, time_t invtimeout)
 397 {
 398         time_t now = ServerInstance->Time();
 399         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 400         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 401         {
 402                 if (channel == i->first)
 403                 {
 404                         if (i->second != 0 && invtimeout > i->second)
 405                         {
 406                                 i->second = invtimeout;
 407                         }
 408
 409                         return;
 410                 }
 411         }
 412         invites.push_back(std::make_pair(channel, invtimeout));
 413 }
 414
 415 void LocalUser::RemoveInvite(const irc::string &channel)
 416 {
 417         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 418         {
 419                 if (channel == i->first)
 420                 {
 421                         invites.erase(i);
 422                         return;
 423                 }
 424         }
 425 }
 426
 427 bool User::HasModePermission(unsigned char, ModeType)
 428 {
 429         return true;
 430 }
 431
 432 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 433 {
 434         if (!IS_OPER(this))
 435                 return false;
 436
 437         if (mode < 'A' || mode > ('A' + 64)) return false;
 438
 439         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 440
 441 }
 442 /*
 443  * users on remote servers can completely bypass all permissions based checks.
 444  * This prevents desyncs when one server has different type/class tags to another.
 445  * That having been said, this does open things up to the possibility of source changes
 446  * allowing remote kills, etc - but if they have access to the src, they most likely have
 447  * access to the conf - so it's an end to a means either way.
 448  */
 449 bool User::HasPermission(const std::string&)
 450 {
 451         return true;
 452 }
 453
 454 bool LocalUser::HasPermission(const std::string &command)
 455 {
 456         // are they even an oper at all?
 457         if (!IS_OPER(this))
 458         {
 459                 return false;
 460         }
 461
 462         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 463                 return true;
 464         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 465                 return true;
 466
 467         return false;
 468 }
 469
 470 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 471 {
 472         return true;
 473 }
 474
 475 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 476 {
 477         if (!IS_OPER(this))
 478         {
 479                 if (noisy)
 480                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 481                 return false;
 482         }
 483
 484         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 485         {
 486                 return true;
 487         }
 488         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 489         {
 490                 return true;
 491         }
 492
 493         if (noisy)
 494                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), oper->NameStr(), privstr.c_str());
 495         return false;
 496 }
 497
 498 void User::OnDataReady()
 499 {
 500 }
 501
 502 void LocalUser::OnDataReady()
 503 {
 504         if (quitting)
 505                 return;
 506
 507         if (recvq.length() > MyClass->GetRecvqMax() && !HasPrivPermission("users/flood/increased-buffers"))
 508         {
 509                 ServerInstance->Users->QuitUser(this, "RecvQ exceeded");
 510                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 511                         nick.c_str(), (unsigned long)recvq.length(), MyClass->GetRecvqMax());
 512         }
 513         unsigned long sendqmax = ULONG_MAX;
 514         if (!HasPrivPermission("users/flood/increased-buffers"))
 515                 sendqmax = MyClass->GetSendqSoftMax();
 516         int penaltymax = MyClass->GetPenaltyThreshold();
 517         if (penaltymax == 0 || HasPrivPermission("users/flood/no-fakelag"))
 518                 penaltymax = INT_MAX;
 519
 520         while (Penalty < penaltymax && getSendQSize() < sendqmax)
 521         {
 522                 std::string line;
 523                 line.reserve(MAXBUF);
 524                 std::string::size_type qpos = 0;
 525                 while (qpos < recvq.length())
 526                 {
 527                         char c = recvq[qpos++];
 528                         switch (c)
 529                         {
 530                         case '\0':
 531                                 c = ' ';
 532                                 break;
 533                         case '\r':
 534                                 continue;
 535                         case '\n':
 536                                 goto eol_found;
 537                         }
 538                         if (line.length() < MAXBUF - 2)
 539                                 line.push_back(c);
 540                 }
 541                 // if we got here, the recvq ran out before we found a newline
 542                 return;
 543 eol_found:
 544                 // just found a newline. Terminate the string, and pull it out of recvq
 545                 recvq = recvq.substr(qpos);
 546
 547                 // TODO should this be moved to when it was inserted in recvq?
 548                 ServerInstance->stats->statsRecv += qpos;
 549                 this->bytes_in += qpos;
 550                 this->cmds_in++;
 551
 552                 ServerInstance->Parser->ProcessBuffer(line, this);
 553                 if (quitting)
 554                         return;
 555         }
 556         // Add pseudo-penalty so that we continue processing after sendq recedes
 557         if (Penalty == 0 && getSendQSize() >= sendqmax)
 558                 Penalty++;
 559 }
 560
 561 void LocalUser::AddWriteBuf(const std::string &data)
 562 {
 563         if (!quitting && getSendQSize() + data.length() > MyClass->GetSendqHardMax() && !HasPrivPermission("users/flood/increased-buffers"))
 564         {
 565                 /*
 566                  * Quit the user FIRST, because otherwise we could recurse
 567                  * here and hit the same limit.
 568                  */
 569                 ServerInstance->Users->QuitUser(this, "SendQ exceeded");
 570                 ServerInstance->SNO->WriteToSnoMask('a', "User %s SendQ exceeds connect class maximum of %lu",
 571                         nick.c_str(), MyClass->GetSendqHardMax());
 572                 return;
 573         }
 574
 575         // We still want to append data to the sendq of a quitting user,
 576         // e.g. their ERROR message that says 'closing link'
 577
 578         WriteData(data);
 579 }
 580
 581 void User::OnError(BufferedSocketError)
 582 {
 583         ServerInstance->Users->QuitUser(this, getError());
 584 }
 585
 586 CullResult User::cull()
 587 {
 588         if (!quitting)
 589                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 590         PurgeEmptyChannels();
 591
 592         this->InvalidateCache();
 593         this->DecrementModes();
 594
 595         if (client_sa.sa.sa_family != AF_UNSPEC)
 596                 ServerInstance->Users->RemoveCloneCounts(this);
 597
 598         ServerInstance->Users->uuidlist->erase(uuid);
 599         return Extensible::cull();
 600 }
 601
 602 CullResult LocalUser::cull()
 603 {
 604         std::vector<LocalUser*>::iterator x = find(ServerInstance->Users->local_users.begin(),ServerInstance->Users->local_users.end(),this);
 605         if (x != ServerInstance->Users->local_users.end())
 606                 ServerInstance->Users->local_users.erase(x);
 607         else
 608                 ServerInstance->Logs->Log("USERS", DEBUG, "Failed to remove user from vector");
 609
 610         Close();
 611         return User::cull();
 612 }
 613
 614 CullResult FakeUser::cull()
 615 {
 616         // Fake users don't quit, they just get culled.
 617         quitting = true;
 618         return User::cull();
 619 }
 620
 621 void User::Oper(OperInfo* info)
 622 {
 623         if (this->IsModeSet('o'))
 624                 this->UnOper();
 625
 626         this->modes[UM_OPERATOR] = 1;
 627         this->oper = info;
 628         this->WriteServ("MODE %s :+o", this->nick.c_str());
 629         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 630
 631         std::string opername;
 632         if (info->oper_block)
 633                 opername = info->oper_block->getString("name");
 634
 635         if (IS_LOCAL(this))
 636         {
 637                 LocalUser* l = IS_LOCAL(this);
 638                 std::string vhost = oper->getConfig("vhost");
 639                 if (!vhost.empty())
 640                         l->ChangeDisplayedHost(vhost.c_str());
 641                 std::string opClass = oper->getConfig("class");
 642                 if (!opClass.empty())
 643                 {
 644                         l->SetClass(opClass);
 645                         l->CheckClass();
 646                 }
 647         }
 648
 649         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 650                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 651         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 652
 653         ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick.c_str(), this->ident.c_str(), this->host.c_str(), oper->NameStr());
 654         ServerInstance->Users->all_opers.push_back(this);
 655
 656         // Expand permissions from config for faster lookup
 657         if (IS_LOCAL(this))
 658                 oper->init();
 659
 660         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 661 }
 662
 663 void OperInfo::init()
 664 {
 665         AllowedOperCommands.clear();
 666         AllowedPrivs.clear();
 667         AllowedUserModes.reset();
 668         AllowedChanModes.reset();
 669         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 670
 671         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 672         {
 673                 ConfigTag* tag = *iter;
 674                 std::string mycmd, mypriv;
 675                 /* Process commands */
 676                 irc::spacesepstream CommandList(tag->getString("commands"));
 677                 while (CommandList.GetToken(mycmd))
 678                 {
 679                         AllowedOperCommands.insert(mycmd);
 680                 }
 681
 682                 irc::spacesepstream PrivList(tag->getString("privs"));
 683                 while (PrivList.GetToken(mypriv))
 684                 {
 685                         AllowedPrivs.insert(mypriv);
 686                 }
 687
 688                 for (unsigned char* c = (unsigned char*)tag->getString("usermodes").c_str(); *c; ++c)
 689                 {
 690                         if (*c == '*')
 691                         {
 692                                 this->AllowedUserModes.set();
 693                         }
 694                         else
 695                         {
 696                                 this->AllowedUserModes[*c - 'A'] = true;
 697                         }
 698                 }
 699
 700                 for (unsigned char* c = (unsigned char*)tag->getString("chanmodes").c_str(); *c; ++c)
 701                 {
 702                         if (*c == '*')
 703                         {
 704                                 this->AllowedChanModes.set();
 705                         }
 706                         else
 707                         {
 708                                 this->AllowedChanModes[*c - 'A'] = true;
 709                         }
 710                 }
 711         }
 712 }
 713
 714 void User::UnOper()
 715 {
 716         if (!IS_OPER(this))
 717                 return;
 718
 719         /*
 720          * unset their oper type (what IS_OPER checks).
 721          * note, order is important - this must come before modes as -o attempts
 722          * to call UnOper. -- w00t
 723          */
 724         oper = NULL;
 725
 726
 727         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 728         std::string moderemove("-");
 729
 730         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 731         {
 732                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 733                 if (mh && mh->NeedsOper())
 734                         moderemove += letter;
 735         }
 736
 737
 738         std::vector<std::string> parameters;
 739         parameters.push_back(this->nick);
 740         parameters.push_back(moderemove);
 741
 742         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 743
 744         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 745         ServerInstance->Users->all_opers.remove(this);
 746
 747         this->modes[UM_OPERATOR] = 0;
 748 }
 749
 750 /* adds or updates an entry in the whowas list */
 751 void User::AddToWhoWas()
 752 {
 753         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 754         if (whowas)
 755         {
 756                 WhowasRequest req(NULL, whowas, WhowasRequest::WHOWAS_ADD);
 757                 req.user = this;
 758                 req.Send();
 759         }
 760 }
 761
 762 /*
 763  * Check class restrictions
 764  */
 765 void LocalUser::CheckClass()
 766 {
 767         ConnectClass* a = this->MyClass;
 768
 769         if (!a)
 770         {
 771                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 772         }
 773         else if (a->type == CC_DENY)
 774         {
 775                 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
 776                 return;
 777         }
 778         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 779         {
 780                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 781                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 782                 return;
 783         }
 784         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 785         {
 786                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 787                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 788                 return;
 789         }
 790
 791         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 792 }
 793
 794 bool User::CheckLines(bool doZline)
 795 {
 796         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 797
 798         if (!this->exempt)
 799         {
 800                 for (int n = 0; check[n]; ++n)
 801                 {
 802                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 803
 804                         if (r)
 805                         {
 806                                 r->Apply(this);
 807                                 return true;
 808                         }
 809                 }
 810         }
 811
 812         return false;
 813 }
 814
 815 void LocalUser::FullConnect()
 816 {
 817         ServerInstance->stats->statsConnects++;
 818         this->idle_lastmsg = ServerInstance->Time();
 819
 820         /*
 821          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 822          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 823          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 824          * Don't remove this! -- w00t
 825          */
 826         this->SetClass();
 827
 828         /* Check the password, if one is required by the user's connect class.
 829          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 830          */
 831         if (!MyClass->pass.empty())
 832         {
 833                 if (ServerInstance->PassCompare(this, MyClass->pass.c_str(), password.c_str(), MyClass->hash.c_str()))
 834                 {
 835                         ServerInstance->Users->QuitUser(this, "Invalid password");
 836                         return;
 837                 }
 838         }
 839
 840         if (this->CheckLines())
 841                 return;
 842
 843         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network.c_str());
 844         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str());
 845         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version InspIRCd-2.0",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
 846         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 847         this->WriteNumeric(RPL_SERVERVERSION, "%s %s InspIRCd-2.0 %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 848
 849         ServerInstance->Config->Send005(this);
 850         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 851
 852
 853         this->ShowMOTD();
 854
 855         /* Now registered */
 856         if (ServerInstance->Users->unregistered_count)
 857                 ServerInstance->Users->unregistered_count--;
 858
 859         /* Trigger LUSERS output, give modules a chance too */
 860         ModResult MOD_RESULT;
 861         std::string command("LUSERS");
 862         std::vector<std::string> parameters;
 863         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, "LUSERS"));
 864         if (!MOD_RESULT)
 865                 ServerInstance->CallCommandHandler(command, parameters, this);
 866
 867         /*
 868          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 869          * for a user that doesn't exist yet.
 870          */
 871         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 872
 873         this->registered = REG_ALL;
 874
 875         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 876
 877         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]",
 878                 this->GetServerPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
 879         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 880         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 881 }
 882
 883 /** User::UpdateNick()
 884  * re-allocates a nick in the user_hash after they change nicknames,
 885  * returns a pointer to the new user as it may have moved
 886  */
 887 User* User::UpdateNickHash(const char* New)
 888 {
 889         //user_hash::iterator newnick;
 890         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 891
 892         if (!irc::string(this->nick.c_str()).compare(New))
 893                 return oldnick->second;
 894
 895         if (oldnick == ServerInstance->Users->clientlist->end())
 896                 return NULL; /* doesnt exist */
 897
 898         User* olduser = oldnick->second;
 899         ServerInstance->Users->clientlist->erase(oldnick);
 900         (*(ServerInstance->Users->clientlist))[New] = olduser;
 901         return olduser;
 902 }
 903
 904 void User::InvalidateCache()
 905 {
 906         /* Invalidate cache */
 907         cached_fullhost.clear();
 908         cached_hostip.clear();
 909         cached_makehost.clear();
 910         cached_fullrealhost.clear();
 911 }
 912
 913 bool User::ForceNickChange(const char* newnick)
 914 {
 915         ModResult MOD_RESULT;
 916
 917         this->InvalidateCache();
 918
 919         ServerInstance->NICKForced.set(this, 1);
 920         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 921         ServerInstance->NICKForced.set(this, 0);
 922
 923         if (MOD_RESULT == MOD_RES_DENY)
 924         {
 925                 ServerInstance->stats->statsCollisions++;
 926                 return false;
 927         }
 928
 929         std::deque<classbase*> dummy;
 930         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
 931         if (nickhandler) // wtfbbq, when would this not be here
 932         {
 933                 std::vector<std::string> parameters;
 934                 parameters.push_back(newnick);
 935                 ServerInstance->NICKForced.set(this, 1);
 936                 bool result = (ServerInstance->Parser->CallHandler("NICK", parameters, this) == CMD_SUCCESS);
 937                 ServerInstance->NICKForced.set(this, 0);
 938                 return result;
 939         }
 940
 941         // Unreachable, we hope
 942         return false;
 943 }
 944
 945 int LocalUser::GetServerPort()
 946 {
 947         switch (this->server_sa.sa.sa_family)
 948         {
 949                 case AF_INET6:
 950                         return htons(this->server_sa.in6.sin6_port);
 951                 case AF_INET:
 952                         return htons(this->server_sa.in4.sin_port);
 953         }
 954         return 0;
 955 }
 956
 957 const char* User::GetIPString()
 958 {
 959         int port;
 960         if (cachedip.empty())
 961         {
 962                 irc::sockets::satoap(client_sa, cachedip, port);
 963                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 964                 if (cachedip.c_str()[0] == ':')
 965                         cachedip.insert(0,1,'0');
 966         }
 967
 968         return cachedip.c_str();
 969 }
 970
 971 irc::sockets::cidr_mask User::GetCIDRMask()
 972 {
 973         int range = 0;
 974         switch (client_sa.sa.sa_family)
 975         {
 976                 case AF_INET6:
 977                         range = ServerInstance->Config->c_ipv6_range;
 978                         break;
 979                 case AF_INET:
 980                         range = ServerInstance->Config->c_ipv4_range;
 981                         break;
 982         }
 983         return irc::sockets::cidr_mask(client_sa, range);
 984 }
 985
 986 bool User::SetClientIP(const char* sip)
 987 {
 988         this->cachedip = "";
 989         return irc::sockets::aptosa(sip, 0, client_sa);
 990 }
 991
 992 static std::string wide_newline("\r\n");
 993
 994 void User::Write(const std::string& text)
 995 {
 996 }
 997
 998 void User::Write(const char *text, ...)
 999 {
1000 }
1001
1002 void LocalUser::Write(const std::string& text)
1003 {
1004         if (!ServerInstance->SE->BoundsCheckFd(this))
1005                 return;
1006
1007         if (text.length() > MAXBUF - 2)
1008         {
1009                 // this should happen rarely or never. Crop the string at 512 and try again.
1010                 std::string try_again = text.substr(0, MAXBUF - 2);
1011                 Write(try_again);
1012                 return;
1013         }
1014
1015         ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1016
1017         this->AddWriteBuf(text);
1018         this->AddWriteBuf(wide_newline);
1019
1020         ServerInstance->stats->statsSent += text.length() + 2;
1021         this->bytes_out += text.length() + 2;
1022         this->cmds_out++;
1023 }
1024
1025 /** Write()
1026  */
1027 void LocalUser::Write(const char *text, ...)
1028 {
1029         va_list argsPtr;
1030         char textbuffer[MAXBUF];
1031
1032         va_start(argsPtr, text);
1033         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1034         va_end(argsPtr);
1035
1036         this->Write(std::string(textbuffer));
1037 }
1038
1039 void User::WriteServ(const std::string& text)
1040 {
1041         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1042 }
1043
1044 /** WriteServ()
1045  *  Same as Write(), except `text' is prefixed with `:server.name '.
1046  */
1047 void User::WriteServ(const char* text, ...)
1048 {
1049         va_list argsPtr;
1050         char textbuffer[MAXBUF];
1051
1052         va_start(argsPtr, text);
1053         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1054         va_end(argsPtr);
1055
1056         this->WriteServ(std::string(textbuffer));
1057 }
1058
1059
1060 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1061 {
1062         va_list argsPtr;
1063         char textbuffer[MAXBUF];
1064
1065         va_start(argsPtr, text);
1066         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1067         va_end(argsPtr);
1068
1069         this->WriteNumeric(numeric, std::string(textbuffer));
1070 }
1071
1072 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1073 {
1074         char textbuffer[MAXBUF];
1075         ModResult MOD_RESULT;
1076
1077         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1078
1079         if (MOD_RESULT == MOD_RES_DENY)
1080                 return;
1081
1082         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1083         this->Write(std::string(textbuffer));
1084 }
1085
1086 void User::WriteFrom(User *user, const std::string &text)
1087 {
1088         char tb[MAXBUF];
1089
1090         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1091
1092         this->Write(std::string(tb));
1093 }
1094
1095
1096 /* write text from an originating user to originating user */
1097
1098 void User::WriteFrom(User *user, const char* text, ...)
1099 {
1100         va_list argsPtr;
1101         char textbuffer[MAXBUF];
1102
1103         va_start(argsPtr, text);
1104         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1105         va_end(argsPtr);
1106
1107         this->WriteFrom(user, std::string(textbuffer));
1108 }
1109
1110
1111 /* write text to an destination user from a source user (e.g. user privmsg) */
1112
1113 void User::WriteTo(User *dest, const char *data, ...)
1114 {
1115         char textbuffer[MAXBUF];
1116         va_list argsPtr;
1117
1118         va_start(argsPtr, data);
1119         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1120         va_end(argsPtr);
1121
1122         this->WriteTo(dest, std::string(textbuffer));
1123 }
1124
1125 void User::WriteTo(User *dest, const std::string &data)
1126 {
1127         dest->WriteFrom(this, data);
1128 }
1129
1130 void User::WriteCommon(const char* text, ...)
1131 {
1132         char textbuffer[MAXBUF];
1133         va_list argsPtr;
1134
1135         if (this->registered != REG_ALL || quitting)
1136                 return;
1137
1138         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1139
1140         va_start(argsPtr, text);
1141         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1142         va_end(argsPtr);
1143
1144         this->WriteCommonRaw(std::string(textbuffer), true);
1145 }
1146
1147 void User::WriteCommonExcept(const char* text, ...)
1148 {
1149         char textbuffer[MAXBUF];
1150         va_list argsPtr;
1151
1152         if (this->registered != REG_ALL || quitting)
1153                 return;
1154
1155         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1156
1157         va_start(argsPtr, text);
1158         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1159         va_end(argsPtr);
1160
1161         this->WriteCommonRaw(std::string(textbuffer), false);
1162 }
1163
1164 void User::WriteCommonRaw(const std::string &line, bool include_self)
1165 {
1166         if (this->registered != REG_ALL || quitting)
1167                 return;
1168
1169         uniq_id_t uniq_id = ++already_sent;
1170
1171         UserChanList include_c(chans);
1172         std::map<User*,bool> exceptions;
1173
1174         exceptions[this] = include_self;
1175
1176         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1177
1178         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1179         {
1180                 LocalUser* u = IS_LOCAL(i->first);
1181                 if (u && !u->quitting)
1182                 {
1183                         already_sent[u->GetFd()] = uniq_id;
1184                         if (i->second)
1185                                 u->Write(line);
1186                 }
1187         }
1188         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1189         {
1190                 Channel* c = *v;
1191                 const UserMembList* ulist = c->GetUsers();
1192                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1193                 {
1194                         LocalUser* u = IS_LOCAL(i->first);
1195                         if (u && !u->quitting && already_sent[u->GetFd()] != uniq_id)
1196                         {
1197                                 already_sent[u->GetFd()] = uniq_id;
1198                                 u->Write(line);
1199                         }
1200                 }
1201         }
1202 }
1203
1204 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1205 {
1206         char tb1[MAXBUF];
1207         char tb2[MAXBUF];
1208
1209         if (this->registered != REG_ALL)
1210                 return;
1211
1212         uniq_id_t uniq_id = ++already_sent;
1213
1214         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1215         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1216         std::string out1 = tb1;
1217         std::string out2 = tb2;
1218
1219         UserChanList include_c(chans);
1220         std::map<User*,bool> exceptions;
1221
1222         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1223
1224         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1225         {
1226                 LocalUser* u = IS_LOCAL(i->first);
1227                 if (u && !u->quitting)
1228                 {
1229                         already_sent[u->GetFd()] = uniq_id;
1230                         if (i->second)
1231                                 u->Write(IS_OPER(u) ? out2 : out1);
1232                 }
1233         }
1234         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1235         {
1236                 const UserMembList* ulist = (*v)->GetUsers();
1237                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1238                 {
1239                         LocalUser* u = IS_LOCAL(i->first);
1240                         if (u && !u->quitting && (already_sent[u->GetFd()] != uniq_id))
1241                         {
1242                                 already_sent[u->GetFd()] = uniq_id;
1243                                 u->Write(IS_OPER(u) ? out2 : out1);
1244                         }
1245                 }
1246         }
1247 }
1248
1249 void LocalUser::SendText(const std::string& line)
1250 {
1251         Write(line);
1252 }
1253
1254 void RemoteUser::SendText(const std::string& line)
1255 {
1256         ServerInstance->PI->PushToClient(this, line);
1257 }
1258
1259 void FakeUser::SendText(const std::string& line)
1260 {
1261 }
1262
1263 void User::SendText(const char *text, ...)
1264 {
1265         va_list argsPtr;
1266         char line[MAXBUF];
1267
1268         va_start(argsPtr, text);
1269         vsnprintf(line, MAXBUF, text, argsPtr);
1270         va_end(argsPtr);
1271
1272         SendText(std::string(line));
1273 }
1274
1275 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1276 {
1277         char line[MAXBUF];
1278         int start_pos = LinePrefix.length();
1279         int pos = start_pos;
1280         memcpy(line, LinePrefix.data(), pos);
1281         std::string Word;
1282         while (TextStream >> Word)
1283         {
1284                 int len = Word.length();
1285                 if (pos + len + 12 > MAXBUF)
1286                 {
1287                         line[pos] = '\0';
1288                         SendText(std::string(line));
1289                         pos = start_pos;
1290                 }
1291                 line[pos] = ' ';
1292                 memcpy(line + pos + 1, Word.data(), len);
1293                 pos += len + 1;
1294         }
1295         line[pos] = '\0';
1296         SendText(std::string(line));
1297 }
1298
1299 /* return 0 or 1 depending if users u and u2 share one or more common channels
1300  * (used by QUIT, NICK etc which arent channel specific notices)
1301  *
1302  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1303  * the first users channels then the second users channels within the outer loop,
1304  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1305  * all possible iterations). However this new function instead checks against the
1306  * channel's userlist in the inner loop which is a std::map<User*,User*>
1307  * and saves us time as we already know what pointer value we are after.
1308  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1309  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1310  */
1311 bool User::SharesChannelWith(User *other)
1312 {
1313         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1314                 return false;
1315
1316         /* Outer loop */
1317         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1318         {
1319                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1320                  * by replacing it with a map::find which *should* be more efficient
1321                  */
1322                 if ((*i)->HasUser(other))
1323                         return true;
1324         }
1325         return false;
1326 }
1327
1328 bool User::ChangeName(const char* gecos)
1329 {
1330         if (!this->fullname.compare(gecos))
1331                 return true;
1332
1333         if (IS_LOCAL(this))
1334         {
1335                 ModResult MOD_RESULT;
1336                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1337                 if (MOD_RESULT == MOD_RES_DENY)
1338                         return false;
1339                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1340         }
1341         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1342
1343         return true;
1344 }
1345
1346 void User::DoHostCycle(const std::string &quitline)
1347 {
1348         char buffer[MAXBUF];
1349
1350         if (!ServerInstance->Config->CycleHosts)
1351                 return;
1352
1353         uniq_id_t silent_id = ++already_sent;
1354         uniq_id_t seen_id = ++already_sent;
1355
1356         UserChanList include_c(chans);
1357         std::map<User*,bool> exceptions;
1358
1359         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1360
1361         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1362         {
1363                 LocalUser* u = IS_LOCAL(i->first);
1364                 if (u && !u->quitting)
1365                 {
1366                         if (i->second)
1367                         {
1368                                 already_sent[u->GetFd()] = seen_id;
1369                                 u->Write(quitline);
1370                         }
1371                         else
1372                         {
1373                                 already_sent[u->GetFd()] = silent_id;
1374                         }
1375                 }
1376         }
1377         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1378         {
1379                 Channel* c = *v;
1380                 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1381                 std::string joinline(buffer);
1382                 Membership* memb = c->GetUser(this);
1383                 std::string modeline = memb->modes;
1384                 if (modeline.length() > 0)
1385                 {
1386                         for(unsigned int i=0; i < memb->modes.length(); i++)
1387                                 modeline.append(" ").append(nick);
1388                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s", GetFullHost().c_str(), c->name.c_str(), modeline.c_str());
1389                         modeline = buffer;
1390                 }
1391
1392                 const UserMembList *ulist = c->GetUsers();
1393                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1394                 {
1395                         LocalUser* u = IS_LOCAL(i->first);
1396                         if (u == NULL || u == this)
1397                                 continue;
1398                         if (already_sent[u->GetFd()] == silent_id)
1399                                 continue;
1400
1401                         if (already_sent[u->GetFd()] != seen_id)
1402                         {
1403                                 u->Write(quitline);
1404                                 already_sent[u->GetFd()] = seen_id;
1405                         }
1406                         u->Write(joinline);
1407                         if (modeline.length() > 0)
1408                                 u->Write(modeline);
1409                 }
1410         }
1411 }
1412
1413 bool User::ChangeDisplayedHost(const char* shost)
1414 {
1415         if (dhost == shost)
1416                 return true;
1417
1418         if (IS_LOCAL(this))
1419         {
1420                 ModResult MOD_RESULT;
1421                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1422                 if (MOD_RESULT == MOD_RES_DENY)
1423                         return false;
1424         }
1425
1426         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1427
1428         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1429
1430         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1431         this->dhost.assign(shost, 0, 64);
1432
1433         this->InvalidateCache();
1434
1435         this->DoHostCycle(quitstr);
1436
1437         if (IS_LOCAL(this))
1438                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1439
1440         return true;
1441 }
1442
1443 bool User::ChangeIdent(const char* newident)
1444 {
1445         if (this->ident == newident)
1446                 return true;
1447
1448         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1449
1450         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1451
1452         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1453
1454         this->InvalidateCache();
1455
1456         this->DoHostCycle(quitstr);
1457
1458         return true;
1459 }
1460
1461 void User::SendAll(const char* command, const char* text, ...)
1462 {
1463         char textbuffer[MAXBUF];
1464         char formatbuffer[MAXBUF];
1465         va_list argsPtr;
1466
1467         va_start(argsPtr, text);
1468         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1469         va_end(argsPtr);
1470
1471         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1472         std::string fmt = formatbuffer;
1473
1474         for (std::vector<LocalUser*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1475         {
1476                 (*i)->Write(fmt);
1477         }
1478 }
1479
1480
1481 std::string User::ChannelList(User* source, bool spy)
1482 {
1483         std::string list;
1484
1485         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1486         {
1487                 Channel* c = *i;
1488                 /* If the target is the sender, neither +p nor +s is set, or
1489                  * the channel contains the user, it is not a spy channel
1490                  */
1491                 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1492                         list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1493         }
1494
1495         return list;
1496 }
1497
1498 void User::SplitChanList(User* dest, const std::string &cl)
1499 {
1500         std::string line;
1501         std::ostringstream prefix;
1502         std::string::size_type start, pos, length;
1503
1504         prefix << this->nick << " " << dest->nick << " :";
1505         line = prefix.str();
1506         int namelen = ServerInstance->Config->ServerName.length() + 6;
1507
1508         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1509         {
1510                 length = (pos == std::string::npos) ? cl.length() : pos;
1511
1512                 if (line.length() + namelen + length - start > 510)
1513                 {
1514                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1515                         line = prefix.str();
1516                 }
1517
1518                 if(pos == std::string::npos)
1519                 {
1520                         line.append(cl.substr(start, length - start));
1521                         break;
1522                 }
1523                 else
1524                 {
1525                         line.append(cl.substr(start, length - start + 1));
1526                 }
1527         }
1528
1529         if (line.length())
1530         {
1531                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1532         }
1533 }
1534
1535 /*
1536  * Sets a user's connection class.
1537  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1538  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1539  * then their ip will be taken as 'priority' anyway, so for example,
1540  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1541  */
1542 void LocalUser::SetClass(const std::string &explicit_name)
1543 {
1544         ConnectClass *found = NULL;
1545
1546         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1547
1548         if (!explicit_name.empty())
1549         {
1550                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1551                 {
1552                         ConnectClass* c = *i;
1553
1554                         if (explicit_name == c->name)
1555                         {
1556                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1557                                 found = c;
1558                         }
1559                 }
1560         }
1561         else
1562         {
1563                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1564                 {
1565                         ConnectClass* c = *i;
1566
1567                         if (c->type == CC_ALLOW)
1568                         {
1569                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "ALLOW %s %d %s", c->host.c_str(), c->GetPort(), c->GetName().c_str());
1570                         }
1571                         else
1572                         {
1573                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "DENY %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1574                         }
1575
1576                         /* check if host matches.. */
1577                         if (c->GetHost().length() && !InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1578                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1579                         {
1580                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1581                                 continue;
1582                         }
1583
1584                         /*
1585                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1586                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1587                          */
1588                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1589                         {
1590                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1591                                 continue;
1592                         }
1593
1594                         /* if it requires a port ... */
1595                         if (c->GetPort())
1596                         {
1597                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", c->GetPort());
1598
1599                                 /* and our port doesn't match, fail. */
1600                                 if (this->GetServerPort() != c->GetPort())
1601                                 {
1602                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Port match failed (%d)", this->GetServerPort());
1603                                         continue;
1604                                 }
1605                         }
1606
1607                         /* we stop at the first class that meets ALL critera. */
1608                         found = c;
1609                         break;
1610                 }
1611         }
1612
1613         /*
1614          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1615          */
1616         if (found)
1617         {
1618                 MyClass = found;
1619         }
1620 }
1621
1622 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1623  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1624  * then their ip will be taken as 'priority' anyway, so for example,
1625  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1626  */
1627 ConnectClass* LocalUser::GetClass()
1628 {
1629         return MyClass;
1630 }
1631
1632 ConnectClass* User::GetClass()
1633 {
1634         return NULL;
1635 }
1636
1637 void User::PurgeEmptyChannels()
1638 {
1639         // firstly decrement the count on each channel
1640         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1641         {
1642                 Channel* c = *f;
1643                 c->DelUser(this);
1644         }
1645
1646         this->UnOper();
1647 }
1648
1649 void User::ShowMOTD()
1650 {
1651         if (!ServerInstance->Config->MOTD.size())
1652         {
1653                 this->WriteNumeric(ERR_NOMOTD, "%s :Message of the day file is missing.",this->nick.c_str());
1654                 return;
1655         }
1656         this->WriteNumeric(RPL_MOTDSTART, "%s :%s message of the day", this->nick.c_str(), ServerInstance->Config->ServerName.c_str());
1657
1658         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1659                 this->WriteNumeric(RPL_MOTD, "%s :- %s",this->nick.c_str(),i->c_str());
1660
1661         this->WriteNumeric(RPL_ENDOFMOTD, "%s :End of message of the day.", this->nick.c_str());
1662 }
1663
1664 void User::ShowRULES()
1665 {
1666         if (!ServerInstance->Config->RULES.size())
1667         {
1668                 this->WriteNumeric(ERR_NORULES, "%s :RULES File is missing",this->nick.c_str());
1669                 return;
1670         }
1671
1672         this->WriteNumeric(RPL_RULESTART, "%s :- %s Server Rules -",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
1673
1674         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1675                 this->WriteNumeric(RPL_RULES, "%s :- %s",this->nick.c_str(),i->c_str());
1676
1677         this->WriteNumeric(RPL_RULESEND, "%s :End of RULES command.",this->nick.c_str());
1678 }
1679
1680 const std::string& FakeUser::GetFullHost()
1681 {
1682         if (!ServerInstance->Config->HideWhoisServer.empty())
1683                 return ServerInstance->Config->HideWhoisServer;
1684         return server;
1685 }
1686
1687 const std::string& FakeUser::GetFullRealHost()
1688 {
1689         if (!ServerInstance->Config->HideWhoisServer.empty())
1690                 return ServerInstance->Config->HideWhoisServer;
1691         return server;
1692 }
1693
1694 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1695         : config(tag), type(t), name("unnamed"), registration_timeout(0), host(mask),
1696         pingtime(0), pass(""), hash(""), softsendqmax(0), hardsendqmax(0),
1697         recvqmax(0), penaltythreshold(0), maxlocal(0), maxglobal(0), maxchans(0), port(0), limit(0)
1698 {
1699 }
1700
1701 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1702         : config(tag), type(t), name("unnamed"),
1703         registration_timeout(parent.registration_timeout), host(mask),
1704         pingtime(parent.pingtime), pass(parent.pass), hash(parent.hash),
1705         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax),
1706         recvqmax(parent.recvqmax), penaltythreshold(parent.penaltythreshold), maxlocal(parent.maxlocal),
1707         maxglobal(parent.maxglobal), maxchans(parent.maxchans),
1708         port(parent.port), limit(parent.limit)
1709 {
1710 }
1711
1712 void ConnectClass::Update(const ConnectClass* src)
1713 {
1714         name = src->name;
1715         registration_timeout = src->registration_timeout;
1716         host = src->host;
1717         pingtime = src->pingtime;
1718         pass = src->pass;
1719         hash = src->hash;
1720         softsendqmax = src->softsendqmax;
1721         hardsendqmax = src->hardsendqmax;
1722         recvqmax = src->recvqmax;
1723         penaltythreshold = src->penaltythreshold;
1724         maxlocal = src->maxlocal;
1725         maxglobal = src->maxglobal;
1726         limit = src->limit;
1727 }