src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 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 already_sent_t LocalUser::already_sent_id = 0;
  22
  23 std::string User::ProcessNoticeMasks(const char *sm)
  24 {
  25         bool adding = true, oldadding = false;
  26         const char *c = sm;
  27         std::string output;
  28
  29         while (c && *c)
  30         {
  31                 switch (*c)
  32                 {
  33                         case '+':
  34                                 adding = true;
  35                         break;
  36                         case '-':
  37                                 adding = false;
  38                         break;
  39                         case '*':
  40                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  41                                 {
  42                                         if (ServerInstance->SNO->IsEnabled(d))
  43                                         {
  44                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  45                                                 {
  46                                                         if ((oldadding != adding) || (!output.length()))
  47                                                                 output += (adding ? '+' : '-');
  48
  49                                                         this->SetNoticeMask(d, adding);
  50
  51                                                         output += d;
  52                                                 }
  53                                         }
  54                                         oldadding = adding;
  55                                 }
  56                         break;
  57                         default:
  58                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  59                                 {
  60                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  61                                         {
  62                                                 if ((oldadding != adding) || (!output.length()))
  63                                                         output += (adding ? '+' : '-');
  64
  65                                                 this->SetNoticeMask(*c, adding);
  66
  67                                                 output += *c;
  68                                         }
  69                                 }
  70                                 else
  71                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  72
  73                                 oldadding = adding;
  74                         break;
  75                 }
  76
  77                 c++;
  78         }
  79
  80         std::string s = this->FormatNoticeMasks();
  81         if (s.length() == 0)
  82         {
  83                 this->modes[UM_SNOMASK] = false;
  84         }
  85
  86         return output;
  87 }
  88
  89 void LocalUser::StartDNSLookup()
  90 {
  91         try
  92         {
  93                 bool cached = false;
  94                 const char* sip = this->GetIPString();
  95                 UserResolver *res_reverse;
  96
  97                 QueryType resolvtype = this->client_sa.sa.sa_family == AF_INET6 ? DNS_QUERY_PTR6 : DNS_QUERY_PTR4;
  98                 res_reverse = new UserResolver(this, sip, resolvtype, cached);
  99
 100                 ServerInstance->AddResolver(res_reverse, cached);
 101         }
 102         catch (CoreException& e)
 103         {
 104                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 105         }
 106 }
 107
 108 bool User::IsNoticeMaskSet(unsigned char sm)
 109 {
 110         if (!isalpha(sm))
 111                 return false;
 112         return (snomasks[sm-65]);
 113 }
 114
 115 void User::SetNoticeMask(unsigned char sm, bool value)
 116 {
 117         if (!isalpha(sm))
 118                 return;
 119         snomasks[sm-65] = value;
 120 }
 121
 122 const char* User::FormatNoticeMasks()
 123 {
 124         static char data[MAXBUF];
 125         int offset = 0;
 126
 127         for (int n = 0; n < 64; n++)
 128         {
 129                 if (snomasks[n])
 130                         data[offset++] = n+65;
 131         }
 132
 133         data[offset] = 0;
 134         return data;
 135 }
 136
 137 bool User::IsModeSet(unsigned char m)
 138 {
 139         if (!isalpha(m))
 140                 return false;
 141         return (modes[m-65]);
 142 }
 143
 144 void User::SetMode(unsigned char m, bool value)
 145 {
 146         if (!isalpha(m))
 147                 return;
 148         modes[m-65] = value;
 149 }
 150
 151 const char* User::FormatModes(bool showparameters)
 152 {
 153         static char data[MAXBUF];
 154         std::string params;
 155         int offset = 0;
 156
 157         for (unsigned char n = 0; n < 64; n++)
 158         {
 159                 if (modes[n])
 160                 {
 161                         data[offset++] = n + 65;
 162                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 163                         if (showparameters && mh && mh->GetNumParams(true))
 164                         {
 165                                 std::string p = mh->GetUserParameter(this);
 166                                 if (p.length())
 167                                         params.append(" ").append(p);
 168                         }
 169                 }
 170         }
 171         data[offset] = 0;
 172         strlcat(data, params.c_str(), MAXBUF);
 173         return data;
 174 }
 175
 176 User::User(const std::string &uid, const std::string& sid, int type)
 177         : uuid(uid), server(sid), usertype(type)
 178 {
 179         age = ServerInstance->Time();
 180         signon = idle_lastmsg = 0;
 181         registered = 0;
 182         quietquit = quitting = exempt = dns_done = false;
 183         client_sa.sa.sa_family = AF_UNSPEC;
 184
 185         ServerInstance->Logs->Log("USERS", DEBUG, "New UUID for user: %s", uuid.c_str());
 186
 187         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 188         if (finduuid == ServerInstance->Users->uuidlist->end())
 189                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 190         else
 191                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 192 }
 193
 194 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 195         : User(ServerInstance->GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 196         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 197         already_sent(0)
 198 {
 199         lastping = 0;
 200         eh.SetFd(myfd);
 201         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 202         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 203 }
 204
 205 User::~User()
 206 {
 207         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 208                 ServerInstance->Logs->Log("USERS", DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 209 }
 210
 211 const std::string& User::MakeHost()
 212 {
 213         if (!this->cached_makehost.empty())
 214                 return this->cached_makehost;
 215
 216         char nhost[MAXBUF];
 217         /* This is much faster than snprintf */
 218         char* t = nhost;
 219         for(const char* n = ident.c_str(); *n; n++)
 220                 *t++ = *n;
 221         *t++ = '@';
 222         for(const char* n = host.c_str(); *n; n++)
 223                 *t++ = *n;
 224         *t = 0;
 225
 226         this->cached_makehost.assign(nhost);
 227
 228         return this->cached_makehost;
 229 }
 230
 231 const std::string& User::MakeHostIP()
 232 {
 233         if (!this->cached_hostip.empty())
 234                 return this->cached_hostip;
 235
 236         char ihost[MAXBUF];
 237         /* This is much faster than snprintf */
 238         char* t = ihost;
 239         for(const char* n = ident.c_str(); *n; n++)
 240                 *t++ = *n;
 241         *t++ = '@';
 242         for(const char* n = this->GetIPString(); *n; n++)
 243                 *t++ = *n;
 244         *t = 0;
 245
 246         this->cached_hostip = ihost;
 247
 248         return this->cached_hostip;
 249 }
 250
 251 const std::string& User::GetFullHost()
 252 {
 253         if (!this->cached_fullhost.empty())
 254                 return this->cached_fullhost;
 255
 256         char result[MAXBUF];
 257         char* t = result;
 258         for(const char* n = nick.c_str(); *n; n++)
 259                 *t++ = *n;
 260         *t++ = '!';
 261         for(const char* n = ident.c_str(); *n; n++)
 262                 *t++ = *n;
 263         *t++ = '@';
 264         for(const char* n = dhost.c_str(); *n; n++)
 265                 *t++ = *n;
 266         *t = 0;
 267
 268         this->cached_fullhost = result;
 269
 270         return this->cached_fullhost;
 271 }
 272
 273 char* User::MakeWildHost()
 274 {
 275         static char nresult[MAXBUF];
 276         char* t = nresult;
 277         *t++ = '*';     *t++ = '!';
 278         *t++ = '*';     *t++ = '@';
 279         for(const char* n = dhost.c_str(); *n; n++)
 280                 *t++ = *n;
 281         *t = 0;
 282         return nresult;
 283 }
 284
 285 const std::string& User::GetFullRealHost()
 286 {
 287         if (!this->cached_fullrealhost.empty())
 288                 return this->cached_fullrealhost;
 289
 290         char fresult[MAXBUF];
 291         char* t = fresult;
 292         for(const char* n = nick.c_str(); *n; n++)
 293                 *t++ = *n;
 294         *t++ = '!';
 295         for(const char* n = ident.c_str(); *n; n++)
 296                 *t++ = *n;
 297         *t++ = '@';
 298         for(const char* n = host.c_str(); *n; n++)
 299                 *t++ = *n;
 300         *t = 0;
 301
 302         this->cached_fullrealhost = fresult;
 303
 304         return this->cached_fullrealhost;
 305 }
 306
 307 bool LocalUser::IsInvited(const irc::string &channel)
 308 {
 309         time_t now = ServerInstance->Time();
 310         InvitedList::iterator safei;
 311         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 312         {
 313                 if (channel == i->first)
 314                 {
 315                         if (i->second != 0 && now > i->second)
 316                         {
 317                                 /* Expired invite, remove it. */
 318                                 safei = i;
 319                                 --i;
 320                                 invites.erase(safei);
 321                                 continue;
 322                         }
 323                         return true;
 324                 }
 325         }
 326         return false;
 327 }
 328
 329 InvitedList* LocalUser::GetInviteList()
 330 {
 331         time_t now = ServerInstance->Time();
 332         /* Weed out expired invites here. */
 333         InvitedList::iterator safei;
 334         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 335         {
 336                 if (i->second != 0 && now > i->second)
 337                 {
 338                         /* Expired invite, remove it. */
 339                         safei = i;
 340                         --i;
 341                         invites.erase(safei);
 342                 }
 343         }
 344         return &invites;
 345 }
 346
 347 void LocalUser::InviteTo(const irc::string &channel, time_t invtimeout)
 348 {
 349         time_t now = ServerInstance->Time();
 350         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 351         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 352         {
 353                 if (channel == i->first)
 354                 {
 355                         if (i->second != 0 && invtimeout > i->second)
 356                         {
 357                                 i->second = invtimeout;
 358                         }
 359
 360                         return;
 361                 }
 362         }
 363         invites.push_back(std::make_pair(channel, invtimeout));
 364 }
 365
 366 void LocalUser::RemoveInvite(const irc::string &channel)
 367 {
 368         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 369         {
 370                 if (channel == i->first)
 371                 {
 372                         invites.erase(i);
 373                         return;
 374                 }
 375         }
 376 }
 377
 378 bool User::HasModePermission(unsigned char, ModeType)
 379 {
 380         return true;
 381 }
 382
 383 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 384 {
 385         if (!IS_OPER(this))
 386                 return false;
 387
 388         if (mode < 'A' || mode > ('A' + 64)) return false;
 389
 390         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 391
 392 }
 393 /*
 394  * users on remote servers can completely bypass all permissions based checks.
 395  * This prevents desyncs when one server has different type/class tags to another.
 396  * That having been said, this does open things up to the possibility of source changes
 397  * allowing remote kills, etc - but if they have access to the src, they most likely have
 398  * access to the conf - so it's an end to a means either way.
 399  */
 400 bool User::HasPermission(const std::string&)
 401 {
 402         return true;
 403 }
 404
 405 bool LocalUser::HasPermission(const std::string &command)
 406 {
 407         // are they even an oper at all?
 408         if (!IS_OPER(this))
 409         {
 410                 return false;
 411         }
 412
 413         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 414                 return true;
 415         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 416                 return true;
 417
 418         return false;
 419 }
 420
 421 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 422 {
 423         return true;
 424 }
 425
 426 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 427 {
 428         if (!IS_OPER(this))
 429         {
 430                 if (noisy)
 431                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 432                 return false;
 433         }
 434
 435         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 436         {
 437                 return true;
 438         }
 439         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 440         {
 441                 return true;
 442         }
 443
 444         if (noisy)
 445                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), oper->NameStr(), privstr.c_str());
 446         return false;
 447 }
 448
 449 void UserIOHandler::OnDataReady()
 450 {
 451         if (user->quitting)
 452                 return;
 453
 454         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 455         {
 456                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 457                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 458                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 459         }
 460         unsigned long sendqmax = ULONG_MAX;
 461         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 462                 sendqmax = user->MyClass->GetSendqSoftMax();
 463         unsigned long penaltymax = ULONG_MAX;
 464         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 465                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 466
 467         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 468         {
 469                 std::string line;
 470                 line.reserve(MAXBUF);
 471                 std::string::size_type qpos = 0;
 472                 while (qpos < recvq.length())
 473                 {
 474                         char c = recvq[qpos++];
 475                         switch (c)
 476                         {
 477                         case '\0':
 478                                 c = ' ';
 479                                 break;
 480                         case '\r':
 481                                 continue;
 482                         case '\n':
 483                                 goto eol_found;
 484                         }
 485                         if (line.length() < MAXBUF - 2)
 486                                 line.push_back(c);
 487                 }
 488                 // if we got here, the recvq ran out before we found a newline
 489                 return;
 490 eol_found:
 491                 // just found a newline. Terminate the string, and pull it out of recvq
 492                 recvq = recvq.substr(qpos);
 493
 494                 // TODO should this be moved to when it was inserted in recvq?
 495                 ServerInstance->stats->statsRecv += qpos;
 496                 user->bytes_in += qpos;
 497                 user->cmds_in++;
 498
 499                 ServerInstance->Parser->ProcessBuffer(line, user);
 500                 if (user->quitting)
 501                         return;
 502         }
 503         // Add pseudo-penalty so that we continue processing after sendq recedes
 504         if (user->CommandFloodPenalty == 0 && getSendQSize() >= sendqmax)
 505                 user->CommandFloodPenalty++;
 506         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 507                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 508 }
 509
 510 void UserIOHandler::AddWriteBuf(const std::string &data)
 511 {
 512         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 513                 !user->HasPrivPermission("users/flood/increased-buffers"))
 514         {
 515                 /*
 516                  * Quit the user FIRST, because otherwise we could recurse
 517                  * here and hit the same limit.
 518                  */
 519                 ServerInstance->Users->QuitUser(user, "SendQ exceeded");
 520                 ServerInstance->SNO->WriteToSnoMask('a', "User %s SendQ exceeds connect class maximum of %lu",
 521                         user->nick.c_str(), user->MyClass->GetSendqHardMax());
 522                 return;
 523         }
 524
 525         // We still want to append data to the sendq of a quitting user,
 526         // e.g. their ERROR message that says 'closing link'
 527
 528         WriteData(data);
 529 }
 530
 531 void UserIOHandler::OnError(BufferedSocketError)
 532 {
 533         ServerInstance->Users->QuitUser(user, getError());
 534 }
 535
 536 CullResult User::cull()
 537 {
 538         if (!quitting)
 539                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 540         PurgeEmptyChannels();
 541
 542         this->InvalidateCache();
 543
 544         if (client_sa.sa.sa_family != AF_UNSPEC)
 545                 ServerInstance->Users->RemoveCloneCounts(this);
 546
 547         return Extensible::cull();
 548 }
 549
 550 CullResult LocalUser::cull()
 551 {
 552         std::vector<LocalUser*>::iterator x = find(ServerInstance->Users->local_users.begin(),ServerInstance->Users->local_users.end(),this);
 553         if (x != ServerInstance->Users->local_users.end())
 554                 ServerInstance->Users->local_users.erase(x);
 555         else
 556                 ServerInstance->Logs->Log("USERS", DEBUG, "Failed to remove user from vector");
 557
 558         eh.cull();
 559         return User::cull();
 560 }
 561
 562 CullResult FakeUser::cull()
 563 {
 564         // Fake users don't quit, they just get culled.
 565         quitting = true;
 566         ServerInstance->Users->clientlist->erase(nick);
 567         ServerInstance->Users->uuidlist->erase(uuid);
 568         return User::cull();
 569 }
 570
 571 void User::Oper(OperInfo* info)
 572 {
 573         if (this->IsModeSet('o'))
 574                 this->UnOper();
 575
 576         this->modes[UM_OPERATOR] = 1;
 577         this->oper = info;
 578         this->WriteServ("MODE %s :+o", this->nick.c_str());
 579         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 580
 581         std::string opername;
 582         if (info->oper_block)
 583                 opername = info->oper_block->getString("name");
 584
 585         if (IS_LOCAL(this))
 586         {
 587                 LocalUser* l = IS_LOCAL(this);
 588                 std::string vhost = oper->getConfig("vhost");
 589                 if (!vhost.empty())
 590                         l->ChangeDisplayedHost(vhost.c_str());
 591                 std::string opClass = oper->getConfig("class");
 592                 if (!opClass.empty())
 593                         l->SetClass(opClass);
 594         }
 595
 596         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 597                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 598         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 599
 600         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());
 601         ServerInstance->Users->all_opers.push_back(this);
 602
 603         // Expand permissions from config for faster lookup
 604         if (IS_LOCAL(this))
 605                 oper->init();
 606
 607         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 608 }
 609
 610 void OperInfo::init()
 611 {
 612         AllowedOperCommands.clear();
 613         AllowedPrivs.clear();
 614         AllowedUserModes.reset();
 615         AllowedChanModes.reset();
 616         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 617
 618         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 619         {
 620                 ConfigTag* tag = *iter;
 621                 std::string mycmd, mypriv;
 622                 /* Process commands */
 623                 irc::spacesepstream CommandList(tag->getString("commands"));
 624                 while (CommandList.GetToken(mycmd))
 625                 {
 626                         AllowedOperCommands.insert(mycmd);
 627                 }
 628
 629                 irc::spacesepstream PrivList(tag->getString("privs"));
 630                 while (PrivList.GetToken(mypriv))
 631                 {
 632                         AllowedPrivs.insert(mypriv);
 633                 }
 634
 635                 for (unsigned char* c = (unsigned char*)tag->getString("usermodes").c_str(); *c; ++c)
 636                 {
 637                         if (*c == '*')
 638                         {
 639                                 this->AllowedUserModes.set();
 640                         }
 641                         else
 642                         {
 643                                 this->AllowedUserModes[*c - 'A'] = true;
 644                         }
 645                 }
 646
 647                 for (unsigned char* c = (unsigned char*)tag->getString("chanmodes").c_str(); *c; ++c)
 648                 {
 649                         if (*c == '*')
 650                         {
 651                                 this->AllowedChanModes.set();
 652                         }
 653                         else
 654                         {
 655                                 this->AllowedChanModes[*c - 'A'] = true;
 656                         }
 657                 }
 658         }
 659 }
 660
 661 void User::UnOper()
 662 {
 663         if (!IS_OPER(this))
 664                 return;
 665
 666         /*
 667          * unset their oper type (what IS_OPER checks).
 668          * note, order is important - this must come before modes as -o attempts
 669          * to call UnOper. -- w00t
 670          */
 671         oper = NULL;
 672
 673
 674         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 675         std::string moderemove("-");
 676
 677         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 678         {
 679                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 680                 if (mh && mh->NeedsOper())
 681                         moderemove += letter;
 682         }
 683
 684
 685         std::vector<std::string> parameters;
 686         parameters.push_back(this->nick);
 687         parameters.push_back(moderemove);
 688
 689         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 690
 691         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 692         ServerInstance->Users->all_opers.remove(this);
 693
 694         this->modes[UM_OPERATOR] = 0;
 695 }
 696
 697 /* adds or updates an entry in the whowas list */
 698 void User::AddToWhoWas()
 699 {
 700         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 701         if (whowas)
 702         {
 703                 WhowasRequest req(NULL, whowas, WhowasRequest::WHOWAS_ADD);
 704                 req.user = this;
 705                 req.Send();
 706         }
 707 }
 708
 709 /*
 710  * Check class restrictions
 711  */
 712 void LocalUser::CheckClass()
 713 {
 714         ConnectClass* a = this->MyClass;
 715
 716         if (!a)
 717         {
 718                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 719         }
 720         else if (a->type == CC_DENY)
 721         {
 722                 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
 723                 return;
 724         }
 725         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 726         {
 727                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 728                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 729                 return;
 730         }
 731         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 732         {
 733                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 734                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 735                 return;
 736         }
 737
 738         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 739 }
 740
 741 bool User::CheckLines(bool doZline)
 742 {
 743         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 744
 745         if (!this->exempt)
 746         {
 747                 for (int n = 0; check[n]; ++n)
 748                 {
 749                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 750
 751                         if (r)
 752                         {
 753                                 r->Apply(this);
 754                                 return true;
 755                         }
 756                 }
 757         }
 758
 759         return false;
 760 }
 761
 762 void LocalUser::FullConnect()
 763 {
 764         ServerInstance->stats->statsConnects++;
 765         this->idle_lastmsg = ServerInstance->Time();
 766
 767         /*
 768          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 769          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 770          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 771          * Don't remove this! -- w00t
 772          */
 773         SetClass();
 774         CheckClass();
 775         CheckLines();
 776
 777         if (quitting)
 778                 return;
 779
 780         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network.c_str());
 781         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());
 782         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version InspIRCd-2.0",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
 783         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 784         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());
 785
 786         ServerInstance->Config->Send005(this);
 787         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 788
 789         /* Now registered */
 790         if (ServerInstance->Users->unregistered_count)
 791                 ServerInstance->Users->unregistered_count--;
 792
 793         /* Trigger MOTD and LUSERS output, give modules a chance too */
 794         ModResult MOD_RESULT;
 795         std::string command("MOTD");
 796         std::vector<std::string> parameters;
 797         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 798         if (!MOD_RESULT)
 799                 ServerInstance->CallCommandHandler(command, parameters, this);
 800
 801         MOD_RESULT = MOD_RES_PASSTHRU;
 802         command = "LUSERS";
 803         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 804         if (!MOD_RESULT)
 805                 ServerInstance->CallCommandHandler(command, parameters, this);
 806
 807         /*
 808          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 809          * for a user that doesn't exist yet.
 810          */
 811         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 812
 813         this->registered = REG_ALL;
 814
 815         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 816
 817         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]",
 818                 this->GetServerPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
 819         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 820         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 821 }
 822
 823 void User::InvalidateCache()
 824 {
 825         /* Invalidate cache */
 826         cached_fullhost.clear();
 827         cached_hostip.clear();
 828         cached_makehost.clear();
 829         cached_fullrealhost.clear();
 830 }
 831
 832 bool User::ChangeNick(const std::string& newnick, bool force)
 833 {
 834         ModResult MOD_RESULT;
 835
 836         if (force)
 837                 ServerInstance->NICKForced.set(this, 1);
 838         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 839         ServerInstance->NICKForced.set(this, 0);
 840
 841         if (MOD_RESULT == MOD_RES_DENY)
 842         {
 843                 ServerInstance->stats->statsCollisions++;
 844                 return false;
 845         }
 846
 847         if (assign(newnick) == assign(nick))
 848         {
 849                 // case change, don't need to check Q:lines and such
 850                 // and, if it's identical including case, we can leave right now
 851                 if (newnick == nick)
 852                         return true;
 853         }
 854         else
 855         {
 856                 /*
 857                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 858                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 859                  * Thanks Kein for finding this. -- w00t
 860                  *
 861                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 862                  *              -- w00t
 863                  */
 864                 if (IS_LOCAL(this))
 865                 {
 866                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 867                         if (mq)
 868                         {
 869                                 if (this->registered == REG_ALL)
 870                                 {
 871                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s!%s@%s: %s",
 872                                                 newnick.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), mq->reason.c_str());
 873                                 }
 874                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 875                                 return false;
 876                         }
 877
 878                         if (ServerInstance->Config->RestrictBannedUsers)
 879                         {
 880                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 881                                 {
 882                                         Channel *chan = *i;
 883                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 884                                         {
 885                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 886                                                 return false;
 887                                         }
 888                                 }
 889                         }
 890                 }
 891
 892                 /*
 893                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 894                  * then we have a potential collide. Check whether someone else is camping on the nick
 895                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 896                  * camper to their UID, and allow the incoming nick change.
 897                  *
 898                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 899                  * because the nick is already (rightfully) in use. -- w00t
 900                  */
 901                 User* InUse = ServerInstance->FindNickOnly(newnick);
 902                 if (InUse && (InUse != this))
 903                 {
 904                         if (InUse->registered != REG_ALL)
 905                         {
 906                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 907                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 908                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 909
 910                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 911                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 912
 913                                 InUse->nick = InUse->uuid;
 914                                 InUse->InvalidateCache();
 915                                 InUse->registered &= ~REG_NICK;
 916                         }
 917                         else
 918                         {
 919                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 920                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 921                                 return false;
 922                         }
 923                 }
 924         }
 925
 926         if (this->registered == REG_ALL)
 927                 this->WriteCommon("NICK %s",newnick.c_str());
 928         std::string oldnick = nick;
 929         nick = newnick;
 930
 931         InvalidateCache();
 932         ServerInstance->Users->clientlist->erase(oldnick);
 933         (*(ServerInstance->Users->clientlist))[newnick] = this;
 934
 935         if (registered == REG_ALL)
 936                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 937
 938         return true;
 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::sockets::cidr_mask 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 irc::sockets::cidr_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(&eh))
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[%s] O %s", uuid.c_str(), text.c_str());
1012
1013         eh.AddWriteBuf(text);
1014         eh.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         LocalUser::already_sent_id++;
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                 LocalUser* u = IS_LOCAL(i->first);
1177                 if (u && !u->quitting)
1178                 {
1179                         u->already_sent = LocalUser::already_sent_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                         LocalUser* u = IS_LOCAL(i->first);
1191                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1192                         {
1193                                 u->already_sent = LocalUser::already_sent_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         already_sent_t uniq_id = ++LocalUser::already_sent_id;
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                 LocalUser* u = IS_LOCAL(i->first);
1223                 if (u && !u->quitting)
1224                 {
1225                         u->already_sent = 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                         LocalUser* u = IS_LOCAL(i->first);
1236                         if (u && !u->quitting && (u->already_sent != uniq_id))
1237                         {
1238                                 u->already_sent = 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         already_sent_t silent_id = ++LocalUser::already_sent_id;
1350         already_sent_t seen_id = ++LocalUser::already_sent_id;
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                 LocalUser* u = IS_LOCAL(i->first);
1360                 if (u && !u->quitting)
1361                 {
1362                         if (i->second)
1363                         {
1364                                 u->already_sent = seen_id;
1365                                 u->Write(quitline);
1366                         }
1367                         else
1368                         {
1369                                 u->already_sent = 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                 Membership* memb = c->GetUser(this);
1379                 std::string modeline = memb->modes;
1380                 if (modeline.length() > 0)
1381                 {
1382                         for(unsigned int i=0; i < memb->modes.length(); i++)
1383                                 modeline.append(" ").append(nick);
1384                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s", GetFullHost().c_str(), c->name.c_str(), modeline.c_str());
1385                         modeline = buffer;
1386                 }
1387
1388                 const UserMembList *ulist = c->GetUsers();
1389                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1390                 {
1391                         LocalUser* u = IS_LOCAL(i->first);
1392                         if (u == NULL || u == this)
1393                                 continue;
1394                         if (u->already_sent == silent_id)
1395                                 continue;
1396
1397                         if (u->already_sent != seen_id)
1398                         {
1399                                 u->Write(quitline);
1400                                 u->already_sent = seen_id;
1401                         }
1402                         u->Write(joinline);
1403                         if (modeline.length() > 0)
1404                                 u->Write(modeline);
1405                 }
1406         }
1407 }
1408
1409 bool User::ChangeDisplayedHost(const char* shost)
1410 {
1411         if (dhost == shost)
1412                 return true;
1413
1414         if (IS_LOCAL(this))
1415         {
1416                 ModResult MOD_RESULT;
1417                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1418                 if (MOD_RESULT == MOD_RES_DENY)
1419                         return false;
1420         }
1421
1422         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1423
1424         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1425
1426         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1427         this->dhost.assign(shost, 0, 64);
1428
1429         this->InvalidateCache();
1430
1431         this->DoHostCycle(quitstr);
1432
1433         if (IS_LOCAL(this))
1434                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1435
1436         return true;
1437 }
1438
1439 bool User::ChangeIdent(const char* newident)
1440 {
1441         if (this->ident == newident)
1442                 return true;
1443
1444         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1445
1446         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1447
1448         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1449
1450         this->InvalidateCache();
1451
1452         this->DoHostCycle(quitstr);
1453
1454         return true;
1455 }
1456
1457 void User::SendAll(const char* command, const char* text, ...)
1458 {
1459         char textbuffer[MAXBUF];
1460         char formatbuffer[MAXBUF];
1461         va_list argsPtr;
1462
1463         va_start(argsPtr, text);
1464         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1465         va_end(argsPtr);
1466
1467         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1468         std::string fmt = formatbuffer;
1469
1470         for (std::vector<LocalUser*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1471         {
1472                 (*i)->Write(fmt);
1473         }
1474 }
1475
1476
1477 std::string User::ChannelList(User* source, bool spy)
1478 {
1479         std::string list;
1480
1481         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1482         {
1483                 Channel* c = *i;
1484                 /* If the target is the sender, neither +p nor +s is set, or
1485                  * the channel contains the user, it is not a spy channel
1486                  */
1487                 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1488                         list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1489         }
1490
1491         return list;
1492 }
1493
1494 void User::SplitChanList(User* dest, const std::string &cl)
1495 {
1496         std::string line;
1497         std::ostringstream prefix;
1498         std::string::size_type start, pos, length;
1499
1500         prefix << this->nick << " " << dest->nick << " :";
1501         line = prefix.str();
1502         int namelen = ServerInstance->Config->ServerName.length() + 6;
1503
1504         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1505         {
1506                 length = (pos == std::string::npos) ? cl.length() : pos;
1507
1508                 if (line.length() + namelen + length - start > 510)
1509                 {
1510                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1511                         line = prefix.str();
1512                 }
1513
1514                 if(pos == std::string::npos)
1515                 {
1516                         line.append(cl.substr(start, length - start));
1517                         break;
1518                 }
1519                 else
1520                 {
1521                         line.append(cl.substr(start, length - start + 1));
1522                 }
1523         }
1524
1525         if (line.length())
1526         {
1527                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1528         }
1529 }
1530
1531 /*
1532  * Sets a user's connection class.
1533  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1534  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1535  * then their ip will be taken as 'priority' anyway, so for example,
1536  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1537  */
1538 void LocalUser::SetClass(const std::string &explicit_name)
1539 {
1540         ConnectClass *found = NULL;
1541
1542         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1543
1544         if (!explicit_name.empty())
1545         {
1546                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1547                 {
1548                         ConnectClass* c = *i;
1549
1550                         if (explicit_name == c->name)
1551                         {
1552                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1553                                 found = c;
1554                         }
1555                 }
1556         }
1557         else
1558         {
1559                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1560                 {
1561                         ConnectClass* c = *i;
1562                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Checking %s", c->GetName().c_str());
1563
1564                         ModResult MOD_RESULT;
1565                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1566                         if (MOD_RESULT == MOD_RES_DENY)
1567                                 continue;
1568                         if (MOD_RESULT == MOD_RES_ALLOW)
1569                         {
1570                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class forced by module to %s", c->GetName().c_str());
1571                                 found = c;
1572                                 break;
1573                         }
1574
1575                         if (c->type == CC_NAMED)
1576                                 continue;
1577
1578                         bool regdone = (registered != REG_NONE);
1579                         if (c->config->getBool("registered", regdone) != regdone)
1580                                 continue;
1581
1582                         /* check if host matches.. */
1583                         if (c->GetHost().length() && !InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1584                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1585                         {
1586                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1587                                 continue;
1588                         }
1589
1590                         /*
1591                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1592                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1593                          */
1594                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1595                         {
1596                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1597                                 continue;
1598                         }
1599
1600                         /* if it requires a port ... */
1601                         int port = c->config->getInt("port");
1602                         if (port)
1603                         {
1604                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", port);
1605
1606                                 /* and our port doesn't match, fail. */
1607                                 if (this->GetServerPort() != port)
1608                                         continue;
1609                         }
1610
1611                         if (!c->config->getString("pass").empty())
1612                         {
1613                                 if (ServerInstance->PassCompare(this, c->config->getString("pass"), password, c->config->getString("hash")))
1614                                 {
1615                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Bad password, skipping");
1616                                         continue;
1617                                 }
1618                         }
1619
1620                         /* we stop at the first class that meets ALL critera. */
1621                         found = c;
1622                         break;
1623                 }
1624         }
1625
1626         /*
1627          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1628          */
1629         if (found)
1630         {
1631                 MyClass = found;
1632         }
1633 }
1634
1635 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1636  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1637  * then their ip will be taken as 'priority' anyway, so for example,
1638  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1639  */
1640 ConnectClass* LocalUser::GetClass()
1641 {
1642         return MyClass;
1643 }
1644
1645 ConnectClass* User::GetClass()
1646 {
1647         return NULL;
1648 }
1649
1650 void User::PurgeEmptyChannels()
1651 {
1652         // firstly decrement the count on each channel
1653         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1654         {
1655                 Channel* c = *f;
1656                 c->DelUser(this);
1657         }
1658
1659         this->UnOper();
1660 }
1661
1662 const std::string& FakeUser::GetFullHost()
1663 {
1664         if (!ServerInstance->Config->HideWhoisServer.empty())
1665                 return ServerInstance->Config->HideWhoisServer;
1666         return server;
1667 }
1668
1669 const std::string& FakeUser::GetFullRealHost()
1670 {
1671         if (!ServerInstance->Config->HideWhoisServer.empty())
1672                 return ServerInstance->Config->HideWhoisServer;
1673         return server;
1674 }
1675
1676 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1677         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1678         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1679         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxchans(0), limit(0)
1680 {
1681 }
1682
1683 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1684         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1685         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1686         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1687         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1688         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxchans(parent.maxchans),
1689         limit(parent.limit)
1690 {
1691 }
1692
1693 void ConnectClass::Update(const ConnectClass* src)
1694 {
1695         name = src->name;
1696         registration_timeout = src->registration_timeout;
1697         host = src->host;
1698         pingtime = src->pingtime;
1699         softsendqmax = src->softsendqmax;
1700         hardsendqmax = src->hardsendqmax;
1701         recvqmax = src->recvqmax;
1702         penaltythreshold = src->penaltythreshold;
1703         maxlocal = src->maxlocal;
1704         maxglobal = src->maxglobal;
1705         limit = src->limit;
1706 }