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