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