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