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->masks[d - 'a'].Description.empty())
  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                                                 oldadding = adding;
  54                                                 char u = toupper(d);
  55                                                 if ((!IsNoticeMaskSet(u) && adding) || (IsNoticeMaskSet(u) && !adding))
  56                                                 {
  57                                                         if ((oldadding != adding) || (!output.length()))
  58                                                                 output += (adding ? '+' : '-');
  59
  60                                                         this->SetNoticeMask(u, adding);
  61
  62                                                         output += u;
  63                                                 }
  64                                                 oldadding = adding;
  65                                         }
  66                                 }
  67                         break;
  68                         default:
  69                                 if (isalpha(*c))
  70                                 {
  71                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  72                                         {
  73                                                 if ((oldadding != adding) || (!output.length()))
  74                                                         output += (adding ? '+' : '-');
  75
  76                                                 this->SetNoticeMask(*c, adding);
  77
  78                                                 output += *c;
  79                                         }
  80                                 }
  81                                 else
  82                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  83
  84                                 oldadding = adding;
  85                         break;
  86                 }
  87
  88                 c++;
  89         }
  90
  91         std::string s = this->FormatNoticeMasks();
  92         if (s.length() == 0)
  93         {
  94                 this->modes[UM_SNOMASK] = false;
  95         }
  96
  97         return output;
  98 }
  99
 100 void LocalUser::StartDNSLookup()
 101 {
 102         try
 103         {
 104                 bool cached = false;
 105                 const char* sip = this->GetIPString();
 106                 UserResolver *res_reverse;
 107
 108                 QueryType resolvtype = this->client_sa.sa.sa_family == AF_INET6 ? DNS_QUERY_PTR6 : DNS_QUERY_PTR4;
 109                 res_reverse = new UserResolver(this, sip, resolvtype, cached);
 110
 111                 ServerInstance->AddResolver(res_reverse, cached);
 112         }
 113         catch (CoreException& e)
 114         {
 115                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 116                 dns_done = true;
 117                 ServerInstance->stats->statsDnsBad++;
 118         }
 119 }
 120
 121 bool User::IsNoticeMaskSet(unsigned char sm)
 122 {
 123         if (!isalpha(sm))
 124                 return false;
 125         return (snomasks[sm-65]);
 126 }
 127
 128 void User::SetNoticeMask(unsigned char sm, bool value)
 129 {
 130         if (!isalpha(sm))
 131                 return;
 132         snomasks[sm-65] = value;
 133 }
 134
 135 const char* User::FormatNoticeMasks()
 136 {
 137         static char data[MAXBUF];
 138         int offset = 0;
 139
 140         for (int n = 0; n < 64; n++)
 141         {
 142                 if (snomasks[n])
 143                         data[offset++] = n+65;
 144         }
 145
 146         data[offset] = 0;
 147         return data;
 148 }
 149
 150 bool User::IsModeSet(unsigned char m)
 151 {
 152         if (!isalpha(m))
 153                 return false;
 154         return (modes[m-65]);
 155 }
 156
 157 void User::SetMode(unsigned char m, bool value)
 158 {
 159         if (!isalpha(m))
 160                 return;
 161         modes[m-65] = value;
 162 }
 163
 164 const char* User::FormatModes(bool showparameters)
 165 {
 166         static char data[MAXBUF];
 167         std::string params;
 168         int offset = 0;
 169
 170         for (unsigned char n = 0; n < 64; n++)
 171         {
 172                 if (modes[n])
 173                 {
 174                         data[offset++] = n + 65;
 175                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 176                         if (showparameters && mh && mh->GetNumParams(true))
 177                         {
 178                                 std::string p = mh->GetUserParameter(this);
 179                                 if (p.length())
 180                                         params.append(" ").append(p);
 181                         }
 182                 }
 183         }
 184         data[offset] = 0;
 185         strlcat(data, params.c_str(), MAXBUF);
 186         return data;
 187 }
 188
 189 User::User(const std::string &uid, const std::string& sid, int type)
 190         : uuid(uid), server(sid), usertype(type)
 191 {
 192         age = ServerInstance->Time();
 193         signon = idle_lastmsg = 0;
 194         registered = 0;
 195         quietquit = quitting = exempt = dns_done = false;
 196         quitting_sendq = false;
 197         client_sa.sa.sa_family = AF_UNSPEC;
 198
 199         ServerInstance->Logs->Log("USERS", DEBUG, "New UUID for user: %s", uuid.c_str());
 200
 201         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 202         if (finduuid == ServerInstance->Users->uuidlist->end())
 203                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 204         else
 205                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 206 }
 207
 208 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 209         : User(ServerInstance->GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 210         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 211         already_sent(0)
 212 {
 213         lastping = 0;
 214         eh.SetFd(myfd);
 215         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 216         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 217 }
 218
 219 User::~User()
 220 {
 221         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 222                 ServerInstance->Logs->Log("USERS", DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 223 }
 224
 225 const std::string& User::MakeHost()
 226 {
 227         if (!this->cached_makehost.empty())
 228                 return this->cached_makehost;
 229
 230         char nhost[MAXBUF];
 231         /* This is much faster than snprintf */
 232         char* t = nhost;
 233         for(const char* n = ident.c_str(); *n; n++)
 234                 *t++ = *n;
 235         *t++ = '@';
 236         for(const char* n = host.c_str(); *n; n++)
 237                 *t++ = *n;
 238         *t = 0;
 239
 240         this->cached_makehost.assign(nhost);
 241
 242         return this->cached_makehost;
 243 }
 244
 245 const std::string& User::MakeHostIP()
 246 {
 247         if (!this->cached_hostip.empty())
 248                 return this->cached_hostip;
 249
 250         char ihost[MAXBUF];
 251         /* This is much faster than snprintf */
 252         char* t = ihost;
 253         for(const char* n = ident.c_str(); *n; n++)
 254                 *t++ = *n;
 255         *t++ = '@';
 256         for(const char* n = this->GetIPString(); *n; n++)
 257                 *t++ = *n;
 258         *t = 0;
 259
 260         this->cached_hostip = ihost;
 261
 262         return this->cached_hostip;
 263 }
 264
 265 const std::string& User::GetFullHost()
 266 {
 267         if (!this->cached_fullhost.empty())
 268                 return this->cached_fullhost;
 269
 270         char result[MAXBUF];
 271         char* t = result;
 272         for(const char* n = nick.c_str(); *n; n++)
 273                 *t++ = *n;
 274         *t++ = '!';
 275         for(const char* n = ident.c_str(); *n; n++)
 276                 *t++ = *n;
 277         *t++ = '@';
 278         for(const char* n = dhost.c_str(); *n; n++)
 279                 *t++ = *n;
 280         *t = 0;
 281
 282         this->cached_fullhost = result;
 283
 284         return this->cached_fullhost;
 285 }
 286
 287 char* User::MakeWildHost()
 288 {
 289         static char nresult[MAXBUF];
 290         char* t = nresult;
 291         *t++ = '*';     *t++ = '!';
 292         *t++ = '*';     *t++ = '@';
 293         for(const char* n = dhost.c_str(); *n; n++)
 294                 *t++ = *n;
 295         *t = 0;
 296         return nresult;
 297 }
 298
 299 const std::string& User::GetFullRealHost()
 300 {
 301         if (!this->cached_fullrealhost.empty())
 302                 return this->cached_fullrealhost;
 303
 304         char fresult[MAXBUF];
 305         char* t = fresult;
 306         for(const char* n = nick.c_str(); *n; n++)
 307                 *t++ = *n;
 308         *t++ = '!';
 309         for(const char* n = ident.c_str(); *n; n++)
 310                 *t++ = *n;
 311         *t++ = '@';
 312         for(const char* n = host.c_str(); *n; n++)
 313                 *t++ = *n;
 314         *t = 0;
 315
 316         this->cached_fullrealhost = fresult;
 317
 318         return this->cached_fullrealhost;
 319 }
 320
 321 bool LocalUser::IsInvited(const irc::string &channel)
 322 {
 323         time_t now = ServerInstance->Time();
 324         InvitedList::iterator safei;
 325         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 326         {
 327                 if (channel == i->first)
 328                 {
 329                         if (i->second != 0 && now > i->second)
 330                         {
 331                                 /* Expired invite, remove it. */
 332                                 safei = i;
 333                                 --i;
 334                                 invites.erase(safei);
 335                                 continue;
 336                         }
 337                         return true;
 338                 }
 339         }
 340         return false;
 341 }
 342
 343 InvitedList* LocalUser::GetInviteList()
 344 {
 345         time_t now = ServerInstance->Time();
 346         /* Weed out expired invites here. */
 347         InvitedList::iterator safei;
 348         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 349         {
 350                 if (i->second != 0 && now > i->second)
 351                 {
 352                         /* Expired invite, remove it. */
 353                         safei = i;
 354                         --i;
 355                         invites.erase(safei);
 356                 }
 357         }
 358         return &invites;
 359 }
 360
 361 void LocalUser::InviteTo(const irc::string &channel, time_t invtimeout)
 362 {
 363         time_t now = ServerInstance->Time();
 364         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 365         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 366         {
 367                 if (channel == i->first)
 368                 {
 369                         if (i->second != 0 && invtimeout > i->second)
 370                         {
 371                                 i->second = invtimeout;
 372                         }
 373
 374                         return;
 375                 }
 376         }
 377         invites.push_back(std::make_pair(channel, invtimeout));
 378 }
 379
 380 void LocalUser::RemoveInvite(const irc::string &channel)
 381 {
 382         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 383         {
 384                 if (channel == i->first)
 385                 {
 386                         invites.erase(i);
 387                         return;
 388                 }
 389         }
 390 }
 391
 392 bool User::HasModePermission(unsigned char, ModeType)
 393 {
 394         return true;
 395 }
 396
 397 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 398 {
 399         if (!IS_OPER(this))
 400                 return false;
 401
 402         if (mode < 'A' || mode > ('A' + 64)) return false;
 403
 404         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 405
 406 }
 407 /*
 408  * users on remote servers can completely bypass all permissions based checks.
 409  * This prevents desyncs when one server has different type/class tags to another.
 410  * That having been said, this does open things up to the possibility of source changes
 411  * allowing remote kills, etc - but if they have access to the src, they most likely have
 412  * access to the conf - so it's an end to a means either way.
 413  */
 414 bool User::HasPermission(const std::string&)
 415 {
 416         return true;
 417 }
 418
 419 bool LocalUser::HasPermission(const std::string &command)
 420 {
 421         // are they even an oper at all?
 422         if (!IS_OPER(this))
 423         {
 424                 return false;
 425         }
 426
 427         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 428                 return true;
 429         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 430                 return true;
 431
 432         return false;
 433 }
 434
 435 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 436 {
 437         return true;
 438 }
 439
 440 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 441 {
 442         if (!IS_OPER(this))
 443         {
 444                 if (noisy)
 445                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 446                 return false;
 447         }
 448
 449         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 450         {
 451                 return true;
 452         }
 453         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 454         {
 455                 return true;
 456         }
 457
 458         if (noisy)
 459                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), oper->NameStr(), privstr.c_str());
 460         return false;
 461 }
 462
 463 void UserIOHandler::OnDataReady()
 464 {
 465         if (user->quitting)
 466                 return;
 467
 468         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 469         {
 470                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 471                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 472                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 473         }
 474         unsigned long sendqmax = ULONG_MAX;
 475         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 476                 sendqmax = user->MyClass->GetSendqSoftMax();
 477         unsigned long penaltymax = ULONG_MAX;
 478         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 479                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 480
 481         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 482         {
 483                 std::string line;
 484                 line.reserve(MAXBUF);
 485                 std::string::size_type qpos = 0;
 486                 while (qpos < recvq.length())
 487                 {
 488                         char c = recvq[qpos++];
 489                         switch (c)
 490                         {
 491                         case '\0':
 492                                 c = ' ';
 493                                 break;
 494                         case '\r':
 495                                 continue;
 496                         case '\n':
 497                                 goto eol_found;
 498                         }
 499                         if (line.length() < MAXBUF - 2)
 500                                 line.push_back(c);
 501                 }
 502                 // if we got here, the recvq ran out before we found a newline
 503                 return;
 504 eol_found:
 505                 // just found a newline. Terminate the string, and pull it out of recvq
 506                 recvq = recvq.substr(qpos);
 507
 508                 // TODO should this be moved to when it was inserted in recvq?
 509                 ServerInstance->stats->statsRecv += qpos;
 510                 user->bytes_in += qpos;
 511                 user->cmds_in++;
 512
 513                 ServerInstance->Parser->ProcessBuffer(line, user);
 514                 if (user->quitting)
 515                         return;
 516         }
 517         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 518                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 519 }
 520
 521 void UserIOHandler::AddWriteBuf(const std::string &data)
 522 {
 523         if (user->quitting_sendq)
 524                 return;
 525         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 526                 !user->HasPrivPermission("users/flood/increased-buffers"))
 527         {
 528                 user->quitting_sendq = true;
 529                 ServerInstance->GlobalCulls.AddSQItem(user);
 530                 return;
 531         }
 532
 533         // We still want to append data to the sendq of a quitting user,
 534         // e.g. their ERROR message that says 'closing link'
 535
 536         WriteData(data);
 537 }
 538
 539 void UserIOHandler::OnError(BufferedSocketError)
 540 {
 541         ServerInstance->Users->QuitUser(user, getError());
 542 }
 543
 544 CullResult User::cull()
 545 {
 546         if (!quitting)
 547                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 548         PurgeEmptyChannels();
 549
 550         this->InvalidateCache();
 551
 552         if (client_sa.sa.sa_family != AF_UNSPEC)
 553                 ServerInstance->Users->RemoveCloneCounts(this);
 554
 555         return Extensible::cull();
 556 }
 557
 558 CullResult LocalUser::cull()
 559 {
 560         std::vector<LocalUser*>::iterator x = find(ServerInstance->Users->local_users.begin(),ServerInstance->Users->local_users.end(),this);
 561         if (x != ServerInstance->Users->local_users.end())
 562                 ServerInstance->Users->local_users.erase(x);
 563         else
 564                 ServerInstance->Logs->Log("USERS", DEBUG, "Failed to remove user from vector");
 565
 566         eh.cull();
 567         return User::cull();
 568 }
 569
 570 CullResult FakeUser::cull()
 571 {
 572         // Fake users don't quit, they just get culled.
 573         quitting = true;
 574         ServerInstance->Users->clientlist->erase(nick);
 575         ServerInstance->Users->uuidlist->erase(uuid);
 576         return User::cull();
 577 }
 578
 579 void User::Oper(OperInfo* info)
 580 {
 581         if (this->IsModeSet('o'))
 582                 this->UnOper();
 583
 584         this->modes[UM_OPERATOR] = 1;
 585         this->oper = info;
 586         this->WriteServ("MODE %s :+o", this->nick.c_str());
 587         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 588
 589         std::string opername;
 590         if (info->oper_block)
 591                 opername = info->oper_block->getString("name");
 592
 593         if (IS_LOCAL(this))
 594         {
 595                 LocalUser* l = IS_LOCAL(this);
 596                 std::string vhost = oper->getConfig("vhost");
 597                 if (!vhost.empty())
 598                         l->ChangeDisplayedHost(vhost.c_str());
 599                 std::string opClass = oper->getConfig("class");
 600                 if (!opClass.empty())
 601                         l->SetClass(opClass);
 602         }
 603
 604         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 605                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 606         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 607
 608         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());
 609         ServerInstance->Users->all_opers.push_back(this);
 610
 611         // Expand permissions from config for faster lookup
 612         if (IS_LOCAL(this))
 613                 oper->init();
 614
 615         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 616 }
 617
 618 void OperInfo::init()
 619 {
 620         AllowedOperCommands.clear();
 621         AllowedPrivs.clear();
 622         AllowedUserModes.reset();
 623         AllowedChanModes.reset();
 624         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 625
 626         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 627         {
 628                 ConfigTag* tag = *iter;
 629                 std::string mycmd, mypriv;
 630                 /* Process commands */
 631                 irc::spacesepstream CommandList(tag->getString("commands"));
 632                 while (CommandList.GetToken(mycmd))
 633                 {
 634                         AllowedOperCommands.insert(mycmd);
 635                 }
 636
 637                 irc::spacesepstream PrivList(tag->getString("privs"));
 638                 while (PrivList.GetToken(mypriv))
 639                 {
 640                         AllowedPrivs.insert(mypriv);
 641                 }
 642
 643                 for (unsigned char* c = (unsigned char*)tag->getString("usermodes").c_str(); *c; ++c)
 644                 {
 645                         if (*c == '*')
 646                         {
 647                                 this->AllowedUserModes.set();
 648                         }
 649                         else if (*c >= 'A' && *c < 'z')
 650                         {
 651                                 this->AllowedUserModes[*c - 'A'] = true;
 652                         }
 653                 }
 654
 655                 for (unsigned char* c = (unsigned char*)tag->getString("chanmodes").c_str(); *c; ++c)
 656                 {
 657                         if (*c == '*')
 658                         {
 659                                 this->AllowedChanModes.set();
 660                         }
 661                         else if (*c >= 'A' && *c < 'z')
 662                         {
 663                                 this->AllowedChanModes[*c - 'A'] = true;
 664                         }
 665                 }
 666         }
 667 }
 668
 669 void User::UnOper()
 670 {
 671         if (!IS_OPER(this))
 672                 return;
 673
 674         /*
 675          * unset their oper type (what IS_OPER checks).
 676          * note, order is important - this must come before modes as -o attempts
 677          * to call UnOper. -- w00t
 678          */
 679         oper = NULL;
 680
 681
 682         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 683         std::string moderemove("-");
 684
 685         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 686         {
 687                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 688                 if (mh && mh->NeedsOper())
 689                         moderemove += letter;
 690         }
 691
 692
 693         std::vector<std::string> parameters;
 694         parameters.push_back(this->nick);
 695         parameters.push_back(moderemove);
 696
 697         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 698
 699         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 700         ServerInstance->Users->all_opers.remove(this);
 701
 702         this->modes[UM_OPERATOR] = 0;
 703 }
 704
 705 /* adds or updates an entry in the whowas list */
 706 void User::AddToWhoWas()
 707 {
 708         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 709         if (whowas)
 710         {
 711                 WhowasRequest req(NULL, whowas, WhowasRequest::WHOWAS_ADD);
 712                 req.user = this;
 713                 req.Send();
 714         }
 715 }
 716
 717 /*
 718  * Check class restrictions
 719  */
 720 void LocalUser::CheckClass()
 721 {
 722         ConnectClass* a = this->MyClass;
 723
 724         if (!a)
 725         {
 726                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 727                 return;
 728         }
 729         else if (a->type == CC_DENY)
 730         {
 731                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 732                 return;
 733         }
 734         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 735         {
 736                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 737                 if (a->maxconnwarn)
 738                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 739                 return;
 740         }
 741         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 742         {
 743                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 744                 if (a->maxconnwarn)
 745                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 746                 return;
 747         }
 748
 749         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 750 }
 751
 752 bool User::CheckLines(bool doZline)
 753 {
 754         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 755
 756         if (!this->exempt)
 757         {
 758                 for (int n = 0; check[n]; ++n)
 759                 {
 760                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 761
 762                         if (r)
 763                         {
 764                                 r->Apply(this);
 765                                 return true;
 766                         }
 767                 }
 768         }
 769
 770         return false;
 771 }
 772
 773 void LocalUser::FullConnect()
 774 {
 775         ServerInstance->stats->statsConnects++;
 776         this->idle_lastmsg = ServerInstance->Time();
 777
 778         /*
 779          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 780          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 781          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 782          * Don't remove this! -- w00t
 783          */
 784         MyClass = NULL;
 785         SetClass();
 786         CheckClass();
 787         CheckLines();
 788
 789         if (quitting)
 790                 return;
 791
 792         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network.c_str());
 793         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());
 794         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version InspIRCd-2.0",this->nick.c_str(),ServerInstance->Config->ServerName.c_str());
 795         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 796         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());
 797
 798         ServerInstance->Config->Send005(this);
 799         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 800
 801         /* Now registered */
 802         if (ServerInstance->Users->unregistered_count)
 803                 ServerInstance->Users->unregistered_count--;
 804
 805         /* Trigger MOTD and LUSERS output, give modules a chance too */
 806         ModResult MOD_RESULT;
 807         std::string command("MOTD");
 808         std::vector<std::string> parameters;
 809         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 810         if (!MOD_RESULT)
 811                 ServerInstance->CallCommandHandler(command, parameters, this);
 812
 813         MOD_RESULT = MOD_RES_PASSTHRU;
 814         command = "LUSERS";
 815         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 816         if (!MOD_RESULT)
 817                 ServerInstance->CallCommandHandler(command, parameters, this);
 818
 819         if (ServerInstance->Config->RawLog)
 820                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 821
 822         /*
 823          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 824          * for a user that doesn't exist yet.
 825          */
 826         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 827
 828         this->registered = REG_ALL;
 829
 830         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 831
 832         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]",
 833                 this->GetServerPort(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), this->GetIPString(), this->fullname.c_str());
 834         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 835         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 836         // reset the flood penalty (which could have been raised due to things like auto +x)
 837         CommandFloodPenalty = 0;
 838 }
 839
 840 void User::InvalidateCache()
 841 {
 842         /* Invalidate cache */
 843         cached_fullhost.clear();
 844         cached_hostip.clear();
 845         cached_makehost.clear();
 846         cached_fullrealhost.clear();
 847 }
 848
 849 bool User::ChangeNick(const std::string& newnick, bool force)
 850 {
 851         ModResult MOD_RESULT;
 852
 853         if (force)
 854                 ServerInstance->NICKForced.set(this, 1);
 855         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 856         ServerInstance->NICKForced.set(this, 0);
 857
 858         if (MOD_RESULT == MOD_RES_DENY)
 859         {
 860                 ServerInstance->stats->statsCollisions++;
 861                 return false;
 862         }
 863
 864         if (assign(newnick) == assign(nick))
 865         {
 866                 // case change, don't need to check Q:lines and such
 867                 // and, if it's identical including case, we can leave right now
 868                 if (newnick == nick)
 869                         return true;
 870         }
 871         else
 872         {
 873                 /*
 874                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 875                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 876                  * Thanks Kein for finding this. -- w00t
 877                  *
 878                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 879                  *              -- w00t
 880                  */
 881                 if (IS_LOCAL(this) && !force)
 882                 {
 883                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 884                         if (mq)
 885                         {
 886                                 if (this->registered == REG_ALL)
 887                                 {
 888                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s!%s@%s: %s",
 889                                                 newnick.c_str(), this->nick.c_str(), this->ident.c_str(), this->host.c_str(), mq->reason.c_str());
 890                                 }
 891                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 892                                 return false;
 893                         }
 894
 895                         if (ServerInstance->Config->RestrictBannedUsers)
 896                         {
 897                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 898                                 {
 899                                         Channel *chan = *i;
 900                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 901                                         {
 902                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 903                                                 return false;
 904                                         }
 905                                 }
 906                         }
 907                 }
 908
 909                 /*
 910                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 911                  * then we have a potential collide. Check whether someone else is camping on the nick
 912                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 913                  * camper to their UID, and allow the incoming nick change.
 914                  *
 915                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 916                  * because the nick is already (rightfully) in use. -- w00t
 917                  */
 918                 User* InUse = ServerInstance->FindNickOnly(newnick);
 919                 if (InUse && (InUse != this))
 920                 {
 921                         if (InUse->registered != REG_ALL)
 922                         {
 923                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 924                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 925                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 926
 927                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 928                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 929
 930                                 InUse->nick = InUse->uuid;
 931                                 InUse->InvalidateCache();
 932                                 InUse->registered &= ~REG_NICK;
 933                         }
 934                         else
 935                         {
 936                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 937                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 938                                 return false;
 939                         }
 940                 }
 941         }
 942
 943         if (this->registered == REG_ALL)
 944                 this->WriteCommon("NICK %s",newnick.c_str());
 945         std::string oldnick = nick;
 946         nick = newnick;
 947
 948         InvalidateCache();
 949         ServerInstance->Users->clientlist->erase(oldnick);
 950         (*(ServerInstance->Users->clientlist))[newnick] = this;
 951
 952         if (registered == REG_ALL)
 953                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 954
 955         return true;
 956 }
 957
 958 int LocalUser::GetServerPort()
 959 {
 960         switch (this->server_sa.sa.sa_family)
 961         {
 962                 case AF_INET6:
 963                         return htons(this->server_sa.in6.sin6_port);
 964                 case AF_INET:
 965                         return htons(this->server_sa.in4.sin_port);
 966         }
 967         return 0;
 968 }
 969
 970 const char* User::GetIPString()
 971 {
 972         int port;
 973         if (cachedip.empty())
 974         {
 975                 irc::sockets::satoap(client_sa, cachedip, port);
 976                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 977                 if (cachedip.c_str()[0] == ':')
 978                         cachedip.insert(0,1,'0');
 979         }
 980
 981         return cachedip.c_str();
 982 }
 983
 984 irc::sockets::cidr_mask User::GetCIDRMask()
 985 {
 986         int range = 0;
 987         switch (client_sa.sa.sa_family)
 988         {
 989                 case AF_INET6:
 990                         range = ServerInstance->Config->c_ipv6_range;
 991                         break;
 992                 case AF_INET:
 993                         range = ServerInstance->Config->c_ipv4_range;
 994                         break;
 995         }
 996         return irc::sockets::cidr_mask(client_sa, range);
 997 }
 998
 999 bool User::SetClientIP(const char* sip)
1000 {
1001         this->cachedip = "";
1002         return irc::sockets::aptosa(sip, 0, client_sa);
1003 }
1004
1005 static std::string wide_newline("\r\n");
1006
1007 void User::Write(const std::string& text)
1008 {
1009 }
1010
1011 void User::Write(const char *text, ...)
1012 {
1013 }
1014
1015 void LocalUser::Write(const std::string& text)
1016 {
1017         if (!ServerInstance->SE->BoundsCheckFd(&eh))
1018                 return;
1019
1020         if (text.length() > MAXBUF - 2)
1021         {
1022                 // this should happen rarely or never. Crop the string at 512 and try again.
1023                 std::string try_again = text.substr(0, MAXBUF - 2);
1024                 Write(try_again);
1025                 return;
1026         }
1027
1028         ServerInstance->Logs->Log("USEROUTPUT", RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
1029
1030         eh.AddWriteBuf(text);
1031         eh.AddWriteBuf(wide_newline);
1032
1033         ServerInstance->stats->statsSent += text.length() + 2;
1034         this->bytes_out += text.length() + 2;
1035         this->cmds_out++;
1036 }
1037
1038 /** Write()
1039  */
1040 void LocalUser::Write(const char *text, ...)
1041 {
1042         va_list argsPtr;
1043         char textbuffer[MAXBUF];
1044
1045         va_start(argsPtr, text);
1046         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1047         va_end(argsPtr);
1048
1049         this->Write(std::string(textbuffer));
1050 }
1051
1052 void User::WriteServ(const std::string& text)
1053 {
1054         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1055 }
1056
1057 /** WriteServ()
1058  *  Same as Write(), except `text' is prefixed with `:server.name '.
1059  */
1060 void User::WriteServ(const char* text, ...)
1061 {
1062         va_list argsPtr;
1063         char textbuffer[MAXBUF];
1064
1065         va_start(argsPtr, text);
1066         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1067         va_end(argsPtr);
1068
1069         this->WriteServ(std::string(textbuffer));
1070 }
1071
1072
1073 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1074 {
1075         va_list argsPtr;
1076         char textbuffer[MAXBUF];
1077
1078         va_start(argsPtr, text);
1079         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1080         va_end(argsPtr);
1081
1082         this->WriteNumeric(numeric, std::string(textbuffer));
1083 }
1084
1085 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1086 {
1087         char textbuffer[MAXBUF];
1088         ModResult MOD_RESULT;
1089
1090         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1091
1092         if (MOD_RESULT == MOD_RES_DENY)
1093                 return;
1094
1095         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1096         this->Write(std::string(textbuffer));
1097 }
1098
1099 void User::WriteFrom(User *user, const std::string &text)
1100 {
1101         char tb[MAXBUF];
1102
1103         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1104
1105         this->Write(std::string(tb));
1106 }
1107
1108
1109 /* write text from an originating user to originating user */
1110
1111 void User::WriteFrom(User *user, const char* text, ...)
1112 {
1113         va_list argsPtr;
1114         char textbuffer[MAXBUF];
1115
1116         va_start(argsPtr, text);
1117         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1118         va_end(argsPtr);
1119
1120         this->WriteFrom(user, std::string(textbuffer));
1121 }
1122
1123
1124 /* write text to an destination user from a source user (e.g. user privmsg) */
1125
1126 void User::WriteTo(User *dest, const char *data, ...)
1127 {
1128         char textbuffer[MAXBUF];
1129         va_list argsPtr;
1130
1131         va_start(argsPtr, data);
1132         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1133         va_end(argsPtr);
1134
1135         this->WriteTo(dest, std::string(textbuffer));
1136 }
1137
1138 void User::WriteTo(User *dest, const std::string &data)
1139 {
1140         dest->WriteFrom(this, data);
1141 }
1142
1143 void User::WriteCommon(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), true);
1158 }
1159
1160 void User::WriteCommonExcept(const char* text, ...)
1161 {
1162         char textbuffer[MAXBUF];
1163         va_list argsPtr;
1164
1165         if (this->registered != REG_ALL || quitting)
1166                 return;
1167
1168         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1169
1170         va_start(argsPtr, text);
1171         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1172         va_end(argsPtr);
1173
1174         this->WriteCommonRaw(std::string(textbuffer), false);
1175 }
1176
1177 void User::WriteCommonRaw(const std::string &line, bool include_self)
1178 {
1179         if (this->registered != REG_ALL || quitting)
1180                 return;
1181
1182         LocalUser::already_sent_id++;
1183
1184         UserChanList include_c(chans);
1185         std::map<User*,bool> exceptions;
1186
1187         exceptions[this] = include_self;
1188
1189         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1190
1191         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1192         {
1193                 LocalUser* u = IS_LOCAL(i->first);
1194                 if (u && !u->quitting)
1195                 {
1196                         u->already_sent = LocalUser::already_sent_id;
1197                         if (i->second)
1198                                 u->Write(line);
1199                 }
1200         }
1201         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1202         {
1203                 Channel* c = *v;
1204                 const UserMembList* ulist = c->GetUsers();
1205                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1206                 {
1207                         LocalUser* u = IS_LOCAL(i->first);
1208                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1209                         {
1210                                 u->already_sent = LocalUser::already_sent_id;
1211                                 u->Write(line);
1212                         }
1213                 }
1214         }
1215 }
1216
1217 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1218 {
1219         char tb1[MAXBUF];
1220         char tb2[MAXBUF];
1221
1222         if (this->registered != REG_ALL)
1223                 return;
1224
1225         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1226
1227         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1228         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1229         std::string out1 = tb1;
1230         std::string out2 = tb2;
1231
1232         UserChanList include_c(chans);
1233         std::map<User*,bool> exceptions;
1234
1235         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1236
1237         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1238         {
1239                 LocalUser* u = IS_LOCAL(i->first);
1240                 if (u && !u->quitting)
1241                 {
1242                         u->already_sent = uniq_id;
1243                         if (i->second)
1244                                 u->Write(IS_OPER(u) ? out2 : out1);
1245                 }
1246         }
1247         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1248         {
1249                 const UserMembList* ulist = (*v)->GetUsers();
1250                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1251                 {
1252                         LocalUser* u = IS_LOCAL(i->first);
1253                         if (u && !u->quitting && (u->already_sent != uniq_id))
1254                         {
1255                                 u->already_sent = uniq_id;
1256                                 u->Write(IS_OPER(u) ? out2 : out1);
1257                         }
1258                 }
1259         }
1260 }
1261
1262 void LocalUser::SendText(const std::string& line)
1263 {
1264         Write(line);
1265 }
1266
1267 void RemoteUser::SendText(const std::string& line)
1268 {
1269         ServerInstance->PI->PushToClient(this, line);
1270 }
1271
1272 void FakeUser::SendText(const std::string& line)
1273 {
1274 }
1275
1276 void User::SendText(const char *text, ...)
1277 {
1278         va_list argsPtr;
1279         char line[MAXBUF];
1280
1281         va_start(argsPtr, text);
1282         vsnprintf(line, MAXBUF, text, argsPtr);
1283         va_end(argsPtr);
1284
1285         SendText(std::string(line));
1286 }
1287
1288 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1289 {
1290         char line[MAXBUF];
1291         int start_pos = LinePrefix.length();
1292         int pos = start_pos;
1293         memcpy(line, LinePrefix.data(), pos);
1294         std::string Word;
1295         while (TextStream >> Word)
1296         {
1297                 int len = Word.length();
1298                 if (pos + len + 12 > MAXBUF)
1299                 {
1300                         line[pos] = '\0';
1301                         SendText(std::string(line));
1302                         pos = start_pos;
1303                 }
1304                 line[pos] = ' ';
1305                 memcpy(line + pos + 1, Word.data(), len);
1306                 pos += len + 1;
1307         }
1308         line[pos] = '\0';
1309         SendText(std::string(line));
1310 }
1311
1312 /* return 0 or 1 depending if users u and u2 share one or more common channels
1313  * (used by QUIT, NICK etc which arent channel specific notices)
1314  *
1315  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1316  * the first users channels then the second users channels within the outer loop,
1317  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1318  * all possible iterations). However this new function instead checks against the
1319  * channel's userlist in the inner loop which is a std::map<User*,User*>
1320  * and saves us time as we already know what pointer value we are after.
1321  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1322  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1323  */
1324 bool User::SharesChannelWith(User *other)
1325 {
1326         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1327                 return false;
1328
1329         /* Outer loop */
1330         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1331         {
1332                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1333                  * by replacing it with a map::find which *should* be more efficient
1334                  */
1335                 if ((*i)->HasUser(other))
1336                         return true;
1337         }
1338         return false;
1339 }
1340
1341 bool User::ChangeName(const char* gecos)
1342 {
1343         if (!this->fullname.compare(gecos))
1344                 return true;
1345
1346         if (IS_LOCAL(this))
1347         {
1348                 ModResult MOD_RESULT;
1349                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1350                 if (MOD_RESULT == MOD_RES_DENY)
1351                         return false;
1352                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1353         }
1354         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1355
1356         return true;
1357 }
1358
1359 void User::DoHostCycle(const std::string &quitline)
1360 {
1361         char buffer[MAXBUF];
1362
1363         if (!ServerInstance->Config->CycleHosts)
1364                 return;
1365
1366         already_sent_t silent_id = ++LocalUser::already_sent_id;
1367         already_sent_t seen_id = ++LocalUser::already_sent_id;
1368
1369         UserChanList include_c(chans);
1370         std::map<User*,bool> exceptions;
1371
1372         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1373
1374         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1375         {
1376                 LocalUser* u = IS_LOCAL(i->first);
1377                 if (u && !u->quitting)
1378                 {
1379                         if (i->second)
1380                         {
1381                                 u->already_sent = seen_id;
1382                                 u->Write(quitline);
1383                         }
1384                         else
1385                         {
1386                                 u->already_sent = silent_id;
1387                         }
1388                 }
1389         }
1390         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1391         {
1392                 Channel* c = *v;
1393                 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1394                 std::string joinline(buffer);
1395                 Membership* memb = c->GetUser(this);
1396                 std::string modeline = memb->modes;
1397                 if (modeline.length() > 0)
1398                 {
1399                         for(unsigned int i=0; i < memb->modes.length(); i++)
1400                                 modeline.append(" ").append(nick);
1401                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s",
1402                                 ServerInstance->Config->CycleHostsFromUser ? GetFullHost().c_str() : ServerInstance->Config->ServerName.c_str(),
1403                                 c->name.c_str(), modeline.c_str());
1404                         modeline = buffer;
1405                 }
1406
1407                 const UserMembList *ulist = c->GetUsers();
1408                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1409                 {
1410                         LocalUser* u = IS_LOCAL(i->first);
1411                         if (u == NULL || u == this)
1412                                 continue;
1413                         if (u->already_sent == silent_id)
1414                                 continue;
1415
1416                         if (u->already_sent != seen_id)
1417                         {
1418                                 u->Write(quitline);
1419                                 u->already_sent = seen_id;
1420                         }
1421                         u->Write(joinline);
1422                         if (modeline.length() > 0)
1423                                 u->Write(modeline);
1424                 }
1425         }
1426 }
1427
1428 bool User::ChangeDisplayedHost(const char* shost)
1429 {
1430         if (dhost == shost)
1431                 return true;
1432
1433         if (IS_LOCAL(this))
1434         {
1435                 ModResult MOD_RESULT;
1436                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1437                 if (MOD_RESULT == MOD_RES_DENY)
1438                         return false;
1439         }
1440
1441         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1442
1443         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1444
1445         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1446         this->dhost.assign(shost, 0, 64);
1447
1448         this->InvalidateCache();
1449
1450         this->DoHostCycle(quitstr);
1451
1452         if (IS_LOCAL(this))
1453                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1454
1455         return true;
1456 }
1457
1458 bool User::ChangeIdent(const char* newident)
1459 {
1460         if (this->ident == newident)
1461                 return true;
1462
1463         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1464
1465         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1466
1467         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax + 1);
1468
1469         this->InvalidateCache();
1470
1471         this->DoHostCycle(quitstr);
1472
1473         return true;
1474 }
1475
1476 void User::SendAll(const char* command, const char* text, ...)
1477 {
1478         char textbuffer[MAXBUF];
1479         char formatbuffer[MAXBUF];
1480         va_list argsPtr;
1481
1482         va_start(argsPtr, text);
1483         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1484         va_end(argsPtr);
1485
1486         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1487         std::string fmt = formatbuffer;
1488
1489         for (std::vector<LocalUser*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1490         {
1491                 (*i)->Write(fmt);
1492         }
1493 }
1494
1495
1496 std::string User::ChannelList(User* source, bool spy)
1497 {
1498         std::string list;
1499
1500         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1501         {
1502                 Channel* c = *i;
1503                 /* If the target is the sender, neither +p nor +s is set, or
1504                  * the channel contains the user, it is not a spy channel
1505                  */
1506                 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1507                         list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1508         }
1509
1510         return list;
1511 }
1512
1513 void User::SplitChanList(User* dest, const std::string &cl)
1514 {
1515         std::string line;
1516         std::ostringstream prefix;
1517         std::string::size_type start, pos, length;
1518
1519         prefix << this->nick << " " << dest->nick << " :";
1520         line = prefix.str();
1521         int namelen = ServerInstance->Config->ServerName.length() + 6;
1522
1523         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1524         {
1525                 length = (pos == std::string::npos) ? cl.length() : pos;
1526
1527                 if (line.length() + namelen + length - start > 510)
1528                 {
1529                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1530                         line = prefix.str();
1531                 }
1532
1533                 if(pos == std::string::npos)
1534                 {
1535                         line.append(cl.substr(start, length - start));
1536                         break;
1537                 }
1538                 else
1539                 {
1540                         line.append(cl.substr(start, length - start + 1));
1541                 }
1542         }
1543
1544         if (line.length())
1545         {
1546                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1547         }
1548 }
1549
1550 /*
1551  * Sets a user's connection class.
1552  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1553  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1554  * then their ip will be taken as 'priority' anyway, so for example,
1555  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1556  */
1557 void LocalUser::SetClass(const std::string &explicit_name)
1558 {
1559         ConnectClass *found = NULL;
1560
1561         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1562
1563         if (!explicit_name.empty())
1564         {
1565                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1566                 {
1567                         ConnectClass* c = *i;
1568
1569                         if (explicit_name == c->name)
1570                         {
1571                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1572                                 found = c;
1573                         }
1574                 }
1575         }
1576         else
1577         {
1578                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1579                 {
1580                         ConnectClass* c = *i;
1581                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Checking %s", c->GetName().c_str());
1582
1583                         ModResult MOD_RESULT;
1584                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1585                         if (MOD_RESULT == MOD_RES_DENY)
1586                                 continue;
1587                         if (MOD_RESULT == MOD_RES_ALLOW)
1588                         {
1589                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class forced by module to %s", c->GetName().c_str());
1590                                 found = c;
1591                                 break;
1592                         }
1593
1594                         if (c->type == CC_NAMED)
1595                                 continue;
1596
1597                         bool regdone = (registered != REG_NONE);
1598                         if (c->config->getBool("registered", regdone) != regdone)
1599                                 continue;
1600
1601                         /* check if host matches.. */
1602                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1603                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1604                         {
1605                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1606                                 continue;
1607                         }
1608
1609                         /*
1610                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1611                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1612                          */
1613                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1614                         {
1615                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1616                                 continue;
1617                         }
1618
1619                         /* if it requires a port ... */
1620                         int port = c->config->getInt("port");
1621                         if (port)
1622                         {
1623                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", port);
1624
1625                                 /* and our port doesn't match, fail. */
1626                                 if (this->GetServerPort() != port)
1627                                         continue;
1628                         }
1629
1630                         if (regdone && !c->config->getString("password").empty())
1631                         {
1632                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1633                                 {
1634                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Bad password, skipping");
1635                                         continue;
1636                                 }
1637                         }
1638
1639                         /* we stop at the first class that meets ALL critera. */
1640                         found = c;
1641                         break;
1642                 }
1643         }
1644
1645         /*
1646          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1647          */
1648         if (found)
1649         {
1650                 MyClass = found;
1651         }
1652 }
1653
1654 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1655  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1656  * then their ip will be taken as 'priority' anyway, so for example,
1657  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1658  */
1659 ConnectClass* LocalUser::GetClass()
1660 {
1661         return MyClass;
1662 }
1663
1664 ConnectClass* User::GetClass()
1665 {
1666         return NULL;
1667 }
1668
1669 void User::PurgeEmptyChannels()
1670 {
1671         // firstly decrement the count on each channel
1672         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1673         {
1674                 Channel* c = *f;
1675                 c->DelUser(this);
1676         }
1677
1678         this->UnOper();
1679 }
1680
1681 const std::string& FakeUser::GetFullHost()
1682 {
1683         if (!ServerInstance->Config->HideWhoisServer.empty())
1684                 return ServerInstance->Config->HideWhoisServer;
1685         return server;
1686 }
1687
1688 const std::string& FakeUser::GetFullRealHost()
1689 {
1690         if (!ServerInstance->Config->HideWhoisServer.empty())
1691                 return ServerInstance->Config->HideWhoisServer;
1692         return server;
1693 }
1694
1695 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1696         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1697         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1698         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0), limit(0)
1699 {
1700 }
1701
1702 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1703         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1704         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1705         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1706         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1707         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1708         limit(parent.limit)
1709 {
1710 }
1711
1712 void ConnectClass::Update(const ConnectClass* src)
1713 {
1714         config = src->config;
1715         type = src->type;
1716         fakelag = src->fakelag;
1717         name = src->name;
1718         registration_timeout = src->registration_timeout;
1719         host = src->host;
1720         pingtime = src->pingtime;
1721         softsendqmax = src->softsendqmax;
1722         hardsendqmax = src->hardsendqmax;
1723         recvqmax = src->recvqmax;
1724         penaltythreshold = src->penaltythreshold;
1725         commandrate = src->commandrate;
1726         maxlocal = src->maxlocal;
1727         maxglobal = src->maxglobal;
1728         maxconnwarn = src->maxconnwarn;
1729         maxchans = src->maxchans;
1730         limit = src->limit;
1731 }