src/users.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2006-2009 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2006-2007, 2009 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2008 John Brooks <john.brooks@dereferenced.net>
   8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   9  *   Copyright (C) 2008 Oliver Lupton <oliverlupton@gmail.com>
  10  *   Copyright (C) 2003-2008 Craig Edwards <craigedwards@brainbox.cc>
  11  *
  12  * This file is part of InspIRCd.  InspIRCd is free software: you can
  13  * redistribute it and/or modify it under the terms of the GNU General Public
  14  * License as published by the Free Software Foundation, version 2.
  15  *
  16  * This program is distributed in the hope that it will be useful, but WITHOUT
  17  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  18  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  19  * details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25
  26 #include "inspircd.h"
  27 #include <stdarg.h>
  28 #include "socketengine.h"
  29 #include "xline.h"
  30 #include "bancache.h"
  31 #include "commands/cmd_whowas.h"
  32
  33 already_sent_t LocalUser::already_sent_id = 0;
  34
  35 std::string User::ProcessNoticeMasks(const char *sm)
  36 {
  37         bool adding = true, oldadding = false;
  38         const char *c = sm;
  39         std::string output;
  40
  41         while (c && *c)
  42         {
  43                 switch (*c)
  44                 {
  45                         case '+':
  46                                 adding = true;
  47                         break;
  48                         case '-':
  49                                 adding = false;
  50                         break;
  51                         case '*':
  52                                 for (unsigned char d = 'a'; d <= 'z'; d++)
  53                                 {
  54                                         if (!ServerInstance->SNO->masks[d - 'a'].Description.empty())
  55                                         {
  56                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  57                                                 {
  58                                                         if ((oldadding != adding) || (!output.length()))
  59                                                                 output += (adding ? '+' : '-');
  60
  61                                                         this->SetNoticeMask(d, adding);
  62
  63                                                         output += d;
  64                                                 }
  65                                                 oldadding = adding;
  66                                                 char u = toupper(d);
  67                                                 if ((!IsNoticeMaskSet(u) && adding) || (IsNoticeMaskSet(u) && !adding))
  68                                                 {
  69                                                         if ((oldadding != adding) || (!output.length()))
  70                                                                 output += (adding ? '+' : '-');
  71
  72                                                         this->SetNoticeMask(u, adding);
  73
  74                                                         output += u;
  75                                                 }
  76                                                 oldadding = adding;
  77                                         }
  78                                 }
  79                         break;
  80                         default:
  81                                 if (isalpha(*c))
  82                                 {
  83                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  84                                         {
  85                                                 if ((oldadding != adding) || (!output.length()))
  86                                                         output += (adding ? '+' : '-');
  87
  88                                                 this->SetNoticeMask(*c, adding);
  89
  90                                                 output += *c;
  91                                                 oldadding = adding;
  92                                         }
  93                                 }
  94                                 else
  95                                         this->WriteNumeric(ERR_UNKNOWNSNOMASK, "%s %c :is unknown snomask char to me", this->nick.c_str(), *c);
  96
  97                         break;
  98                 }
  99
 100                 c++;
 101         }
 102
 103         std::string s = this->FormatNoticeMasks();
 104         if (s.length() == 0)
 105         {
 106                 this->modes[UM_SNOMASK] = false;
 107         }
 108
 109         return output;
 110 }
 111
 112 void LocalUser::StartDNSLookup()
 113 {
 114         try
 115         {
 116                 bool cached = false;
 117                 const char* sip = this->GetIPString();
 118                 UserResolver *res_reverse;
 119
 120                 QueryType resolvtype = this->client_sa.sa.sa_family == AF_INET6 ? DNS_QUERY_PTR6 : DNS_QUERY_PTR4;
 121                 res_reverse = new UserResolver(this, sip, resolvtype, cached);
 122
 123                 ServerInstance->AddResolver(res_reverse, cached);
 124         }
 125         catch (CoreException& e)
 126         {
 127                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 128                 dns_done = true;
 129                 ServerInstance->stats->statsDnsBad++;
 130         }
 131 }
 132
 133 bool User::IsNoticeMaskSet(unsigned char sm)
 134 {
 135         if (!isalpha(sm))
 136                 return false;
 137         return (snomasks[sm-65]);
 138 }
 139
 140 void User::SetNoticeMask(unsigned char sm, bool value)
 141 {
 142         if (!isalpha(sm))
 143                 return;
 144         snomasks[sm-65] = value;
 145 }
 146
 147 const char* User::FormatNoticeMasks()
 148 {
 149         static char data[MAXBUF];
 150         int offset = 0;
 151
 152         for (int n = 0; n < 64; n++)
 153         {
 154                 if (snomasks[n])
 155                         data[offset++] = n+65;
 156         }
 157
 158         data[offset] = 0;
 159         return data;
 160 }
 161
 162 bool User::IsModeSet(unsigned char m)
 163 {
 164         if (!isalpha(m))
 165                 return false;
 166         return (modes[m-65]);
 167 }
 168
 169 void User::SetMode(unsigned char m, bool value)
 170 {
 171         if (!isalpha(m))
 172                 return;
 173         modes[m-65] = value;
 174 }
 175
 176 const char* User::FormatModes(bool showparameters)
 177 {
 178         static char data[MAXBUF];
 179         std::string params;
 180         int offset = 0;
 181
 182         for (unsigned char n = 0; n < 64; n++)
 183         {
 184                 if (modes[n])
 185                 {
 186                         data[offset++] = n + 65;
 187                         ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
 188                         if (showparameters && mh && mh->GetNumParams(true))
 189                         {
 190                                 std::string p = mh->GetUserParameter(this);
 191                                 if (p.length())
 192                                         params.append(" ").append(p);
 193                         }
 194                 }
 195         }
 196         data[offset] = 0;
 197         strlcat(data, params.c_str(), MAXBUF);
 198         return data;
 199 }
 200
 201 User::User(const std::string &uid, const std::string& sid, int type)
 202         : uuid(uid), server(sid), usertype(type)
 203 {
 204         age = ServerInstance->Time();
 205         signon = idle_lastmsg = 0;
 206         registered = 0;
 207         quietquit = quitting = exempt = dns_done = false;
 208         quitting_sendq = false;
 209         client_sa.sa.sa_family = AF_UNSPEC;
 210
 211         ServerInstance->Logs->Log("USERS", DEBUG, "New UUID for user: %s", uuid.c_str());
 212
 213         user_hash::iterator finduuid = ServerInstance->Users->uuidlist->find(uuid);
 214         if (finduuid == ServerInstance->Users->uuidlist->end())
 215                 (*ServerInstance->Users->uuidlist)[uuid] = this;
 216         else
 217                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 218 }
 219
 220 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
 221         : User(ServerInstance->GetUID(), ServerInstance->Config->ServerName, USERTYPE_LOCAL), eh(this),
 222         localuseriter(ServerInstance->Users->local_users.end()),
 223         bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
 224         already_sent(0)
 225 {
 226         ident = "unknown";
 227         lastping = 0;
 228         eh.SetFd(myfd);
 229         memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
 230         memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
 231         dhost = host = GetIPString();
 232 }
 233
 234 User::~User()
 235 {
 236         if (ServerInstance->Users->uuidlist->find(uuid) != ServerInstance->Users->uuidlist->end())
 237                 ServerInstance->Logs->Log("USERS", DEFAULT, "User destructor for %s called without cull", uuid.c_str());
 238 }
 239
 240 const std::string& User::MakeHost()
 241 {
 242         if (!this->cached_makehost.empty())
 243                 return this->cached_makehost;
 244
 245         char nhost[MAXBUF];
 246         /* This is much faster than snprintf */
 247         char* t = nhost;
 248         for(const char* n = ident.c_str(); *n; n++)
 249                 *t++ = *n;
 250         *t++ = '@';
 251         for(const char* n = host.c_str(); *n; n++)
 252                 *t++ = *n;
 253         *t = 0;
 254
 255         this->cached_makehost.assign(nhost);
 256
 257         return this->cached_makehost;
 258 }
 259
 260 const std::string& User::MakeHostIP()
 261 {
 262         if (!this->cached_hostip.empty())
 263                 return this->cached_hostip;
 264
 265         char ihost[MAXBUF];
 266         /* This is much faster than snprintf */
 267         char* t = ihost;
 268         for(const char* n = ident.c_str(); *n; n++)
 269                 *t++ = *n;
 270         *t++ = '@';
 271         for(const char* n = this->GetIPString(); *n; n++)
 272                 *t++ = *n;
 273         *t = 0;
 274
 275         this->cached_hostip = ihost;
 276
 277         return this->cached_hostip;
 278 }
 279
 280 const std::string& User::GetFullHost()
 281 {
 282         if (!this->cached_fullhost.empty())
 283                 return this->cached_fullhost;
 284
 285         char result[MAXBUF];
 286         char* t = result;
 287         for(const char* n = nick.c_str(); *n; n++)
 288                 *t++ = *n;
 289         *t++ = '!';
 290         for(const char* n = ident.c_str(); *n; n++)
 291                 *t++ = *n;
 292         *t++ = '@';
 293         for(const char* n = dhost.c_str(); *n; n++)
 294                 *t++ = *n;
 295         *t = 0;
 296
 297         this->cached_fullhost = result;
 298
 299         return this->cached_fullhost;
 300 }
 301
 302 char* User::MakeWildHost()
 303 {
 304         static char nresult[MAXBUF];
 305         char* t = nresult;
 306         *t++ = '*';     *t++ = '!';
 307         *t++ = '*';     *t++ = '@';
 308         for(const char* n = dhost.c_str(); *n; n++)
 309                 *t++ = *n;
 310         *t = 0;
 311         return nresult;
 312 }
 313
 314 const std::string& User::GetFullRealHost()
 315 {
 316         if (!this->cached_fullrealhost.empty())
 317                 return this->cached_fullrealhost;
 318
 319         char fresult[MAXBUF];
 320         char* t = fresult;
 321         for(const char* n = nick.c_str(); *n; n++)
 322                 *t++ = *n;
 323         *t++ = '!';
 324         for(const char* n = ident.c_str(); *n; n++)
 325                 *t++ = *n;
 326         *t++ = '@';
 327         for(const char* n = host.c_str(); *n; n++)
 328                 *t++ = *n;
 329         *t = 0;
 330
 331         this->cached_fullrealhost = fresult;
 332
 333         return this->cached_fullrealhost;
 334 }
 335
 336 bool LocalUser::IsInvited(const irc::string &channel)
 337 {
 338         Channel* chan = ServerInstance->FindChan(channel.c_str());
 339         if (!chan)
 340                 return false;
 341
 342         return (Invitation::Find(chan, this) != NULL);
 343 }
 344
 345 InviteList& LocalUser::GetInviteList()
 346 {
 347         RemoveExpiredInvites();
 348         return invites;
 349 }
 350
 351 void LocalUser::InviteTo(const irc::string &channel, time_t invtimeout)
 352 {
 353         Channel* chan = ServerInstance->FindChan(channel.c_str());
 354         if (chan)
 355                 Invitation::Create(chan, this, invtimeout);
 356 }
 357
 358 void LocalUser::RemoveInvite(const irc::string &channel)
 359 {
 360         Channel* chan = ServerInstance->FindChan(channel.c_str());
 361         if (chan)
 362         {
 363                 Invitation* inv = Invitation::Find(chan, this);
 364                 if (inv)
 365                 {
 366                         inv->cull();
 367                         delete inv;
 368                 }
 369         }
 370 }
 371
 372 void LocalUser::RemoveExpiredInvites()
 373 {
 374         Invitation::Find(NULL, this);
 375 }
 376
 377 bool User::HasModePermission(unsigned char, ModeType)
 378 {
 379         return true;
 380 }
 381
 382 bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
 383 {
 384         if (!IS_OPER(this))
 385                 return false;
 386
 387         if (mode < 'A' || mode > ('A' + 64)) return false;
 388
 389         return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 390
 391 }
 392 /*
 393  * users on remote servers can completely bypass all permissions based checks.
 394  * This prevents desyncs when one server has different type/class tags to another.
 395  * That having been said, this does open things up to the possibility of source changes
 396  * allowing remote kills, etc - but if they have access to the src, they most likely have
 397  * access to the conf - so it's an end to a means either way.
 398  */
 399 bool User::HasPermission(const std::string&)
 400 {
 401         return true;
 402 }
 403
 404 bool LocalUser::HasPermission(const std::string &command)
 405 {
 406         // are they even an oper at all?
 407         if (!IS_OPER(this))
 408         {
 409                 return false;
 410         }
 411
 412         if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
 413                 return true;
 414         else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
 415                 return true;
 416
 417         return false;
 418 }
 419
 420 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
 421 {
 422         return true;
 423 }
 424
 425 bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
 426 {
 427         if (!IS_OPER(this))
 428         {
 429                 if (noisy)
 430                         this->WriteServ("NOTICE %s :You are not an oper", this->nick.c_str());
 431                 return false;
 432         }
 433
 434         if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
 435         {
 436                 return true;
 437         }
 438         else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
 439         {
 440                 return true;
 441         }
 442
 443         if (noisy)
 444                 this->WriteServ("NOTICE %s :Oper type %s does not have access to priv %s", this->nick.c_str(), oper->NameStr(), privstr.c_str());
 445         return false;
 446 }
 447
 448 void UserIOHandler::OnDataReady()
 449 {
 450         if (user->quitting)
 451                 return;
 452
 453         if (recvq.length() > user->MyClass->GetRecvqMax() && !user->HasPrivPermission("users/flood/increased-buffers"))
 454         {
 455                 ServerInstance->Users->QuitUser(user, "RecvQ exceeded");
 456                 ServerInstance->SNO->WriteToSnoMask('a', "User %s RecvQ of %lu exceeds connect class maximum of %lu",
 457                         user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
 458                 return;
 459         }
 460         unsigned long sendqmax = ULONG_MAX;
 461         if (!user->HasPrivPermission("users/flood/increased-buffers"))
 462                 sendqmax = user->MyClass->GetSendqSoftMax();
 463         unsigned long penaltymax = ULONG_MAX;
 464         if (!user->HasPrivPermission("users/flood/no-fakelag"))
 465                 penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 466
 467         while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
 468         {
 469                 std::string line;
 470                 line.reserve(MAXBUF);
 471                 std::string::size_type qpos = 0;
 472                 while (qpos < recvq.length())
 473                 {
 474                         char c = recvq[qpos++];
 475                         switch (c)
 476                         {
 477                         case '\0':
 478                                 c = ' ';
 479                                 break;
 480                         case '\r':
 481                                 continue;
 482                         case '\n':
 483                                 goto eol_found;
 484                         }
 485                         if (line.length() < MAXBUF - 2)
 486                                 line.push_back(c);
 487                 }
 488                 // if we got here, the recvq ran out before we found a newline
 489                 return;
 490 eol_found:
 491                 // just found a newline. Terminate the string, and pull it out of recvq
 492                 recvq = recvq.substr(qpos);
 493
 494                 // TODO should this be moved to when it was inserted in recvq?
 495                 ServerInstance->stats->statsRecv += qpos;
 496                 user->bytes_in += qpos;
 497                 user->cmds_in++;
 498
 499                 ServerInstance->Parser->ProcessBuffer(line, user);
 500                 if (user->quitting)
 501                         return;
 502         }
 503         if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
 504                 ServerInstance->Users->QuitUser(user, "Excess Flood");
 505 }
 506
 507 void UserIOHandler::AddWriteBuf(const std::string &data)
 508 {
 509         if (user->quitting_sendq)
 510                 return;
 511         if (!user->quitting && getSendQSize() + data.length() > user->MyClass->GetSendqHardMax() &&
 512                 !user->HasPrivPermission("users/flood/increased-buffers"))
 513         {
 514                 user->quitting_sendq = true;
 515                 ServerInstance->GlobalCulls.AddSQItem(user);
 516                 return;
 517         }
 518
 519         // We still want to append data to the sendq of a quitting user,
 520         // e.g. their ERROR message that says 'closing link'
 521
 522         WriteData(data);
 523 }
 524
 525 void UserIOHandler::OnError(BufferedSocketError)
 526 {
 527         ServerInstance->Users->QuitUser(user, getError());
 528 }
 529
 530 CullResult User::cull()
 531 {
 532         if (!quitting)
 533                 ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 534         PurgeEmptyChannels();
 535
 536         if (client_sa.sa.sa_family != AF_UNSPEC)
 537                 ServerInstance->Users->RemoveCloneCounts(this);
 538
 539         return Extensible::cull();
 540 }
 541
 542 CullResult LocalUser::cull()
 543 {
 544         // The iterator is initialized to local_users.end() in the constructor. It is
 545         // overwritten in UserManager::AddUser() with the real iterator so this check
 546         // is only a precaution currently.
 547         if (localuseriter != ServerInstance->Users->local_users.end())
 548         {
 549                 ServerInstance->Users->local_count--;
 550                 ServerInstance->Users->local_users.erase(localuseriter);
 551         }
 552         else
 553                 ServerInstance->Logs->Log("USERS", DEFAULT, "ERROR: LocalUserIter does not point to a valid entry for " + this->nick);
 554
 555         ClearInvites();
 556         eh.cull();
 557         return User::cull();
 558 }
 559
 560 CullResult FakeUser::cull()
 561 {
 562         // Fake users don't quit, they just get culled.
 563         quitting = true;
 564         ServerInstance->Users->clientlist->erase(nick);
 565         ServerInstance->Users->uuidlist->erase(uuid);
 566         return User::cull();
 567 }
 568
 569 void User::Oper(OperInfo* info)
 570 {
 571         if (this->IsModeSet('o'))
 572                 this->UnOper();
 573
 574         this->modes[UM_OPERATOR] = 1;
 575         this->oper = info;
 576         this->WriteServ("MODE %s :+o", this->nick.c_str());
 577         FOREACH_MOD(I_OnOper, OnOper(this, info->name));
 578
 579         std::string opername;
 580         if (info->oper_block)
 581                 opername = info->oper_block->getString("name");
 582
 583         if (IS_LOCAL(this))
 584         {
 585                 LocalUser* l = IS_LOCAL(this);
 586                 std::string vhost = oper->getConfig("vhost");
 587                 if (!vhost.empty())
 588                         l->ChangeDisplayedHost(vhost.c_str());
 589                 std::string opClass = oper->getConfig("class");
 590                 if (!opClass.empty())
 591                         l->SetClass(opClass);
 592         }
 593
 594         ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
 595                 nick.c_str(), ident.c_str(), host.c_str(), oper->NameStr(), opername.c_str());
 596         this->WriteNumeric(381, "%s :You are now %s %s", nick.c_str(), strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->NameStr());
 597
 598         ServerInstance->Logs->Log("OPER", DEFAULT, "%s opered as type: %s", GetFullRealHost().c_str(), oper->NameStr());
 599         ServerInstance->Users->all_opers.push_back(this);
 600
 601         // Expand permissions from config for faster lookup
 602         if (IS_LOCAL(this))
 603                 oper->init();
 604
 605         FOREACH_MOD(I_OnPostOper,OnPostOper(this, oper->name, opername));
 606 }
 607
 608 void OperInfo::init()
 609 {
 610         AllowedOperCommands.clear();
 611         AllowedPrivs.clear();
 612         AllowedUserModes.reset();
 613         AllowedChanModes.reset();
 614         AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 615
 616         for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
 617         {
 618                 ConfigTag* tag = *iter;
 619                 std::string mycmd, mypriv;
 620                 /* Process commands */
 621                 irc::spacesepstream CommandList(tag->getString("commands"));
 622                 while (CommandList.GetToken(mycmd))
 623                 {
 624                         AllowedOperCommands.insert(mycmd);
 625                 }
 626
 627                 irc::spacesepstream PrivList(tag->getString("privs"));
 628                 while (PrivList.GetToken(mypriv))
 629                 {
 630                         AllowedPrivs.insert(mypriv);
 631                 }
 632
 633                 std::string modes = tag->getString("usermodes");
 634                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 635                 {
 636                         if (*c == '*')
 637                         {
 638                                 this->AllowedUserModes.set();
 639                         }
 640                         else if (*c >= 'A' && *c <= 'z')
 641                         {
 642                                 this->AllowedUserModes[*c - 'A'] = true;
 643                         }
 644                 }
 645
 646                 modes = tag->getString("chanmodes");
 647                 for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
 648                 {
 649                         if (*c == '*')
 650                         {
 651                                 this->AllowedChanModes.set();
 652                         }
 653                         else if (*c >= 'A' && *c <= 'z')
 654                         {
 655                                 this->AllowedChanModes[*c - 'A'] = true;
 656                         }
 657                 }
 658         }
 659 }
 660
 661 void User::UnOper()
 662 {
 663         if (!IS_OPER(this))
 664                 return;
 665
 666         /*
 667          * unset their oper type (what IS_OPER checks).
 668          * note, order is important - this must come before modes as -o attempts
 669          * to call UnOper. -- w00t
 670          */
 671         oper = NULL;
 672
 673
 674         /* Remove all oper only modes from the user when the deoper - Bug #466*/
 675         std::string moderemove("-");
 676
 677         for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 678         {
 679                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 680                 if (mh && mh->NeedsOper())
 681                         moderemove += letter;
 682         }
 683
 684
 685         std::vector<std::string> parameters;
 686         parameters.push_back(this->nick);
 687         parameters.push_back(moderemove);
 688
 689         ServerInstance->Parser->CallHandler("MODE", parameters, this);
 690
 691         /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 692         ServerInstance->Users->all_opers.remove(this);
 693
 694         this->modes[UM_OPERATOR] = 0;
 695         FOREACH_MOD(I_OnPostDeoper, OnPostDeoper(this));
 696 }
 697
 698 /* adds or updates an entry in the whowas list */
 699 void User::AddToWhoWas()
 700 {
 701         Module* whowas = ServerInstance->Modules->Find("cmd_whowas.so");
 702         if (whowas)
 703         {
 704                 WhowasRequest req(NULL, whowas, WhowasRequest::WHOWAS_ADD);
 705                 req.user = this;
 706                 req.Send();
 707         }
 708 }
 709
 710 /*
 711  * Check class restrictions
 712  */
 713 void LocalUser::CheckClass()
 714 {
 715         ConnectClass* a = this->MyClass;
 716
 717         if (!a)
 718         {
 719                 ServerInstance->Users->QuitUser(this, "Access denied by configuration");
 720                 return;
 721         }
 722         else if (a->type == CC_DENY)
 723         {
 724                 ServerInstance->Users->QuitUser(this, a->config->getString("reason", "Unauthorised connection"));
 725                 return;
 726         }
 727         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 728         {
 729                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 730                 if (a->maxconnwarn)
 731                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 732                 return;
 733         }
 734         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 735         {
 736                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 737                 if (a->maxconnwarn)
 738                         ServerInstance->SNO->WriteToSnoMask('a', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 739                 return;
 740         }
 741
 742         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 743 }
 744
 745 bool User::CheckLines(bool doZline)
 746 {
 747         const char* check[] = { "G" , "K", (doZline) ? "Z" : NULL, NULL };
 748
 749         if (!this->exempt)
 750         {
 751                 for (int n = 0; check[n]; ++n)
 752                 {
 753                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 754
 755                         if (r)
 756                         {
 757                                 r->Apply(this);
 758                                 return true;
 759                         }
 760                 }
 761         }
 762
 763         return false;
 764 }
 765
 766 void LocalUser::FullConnect()
 767 {
 768         ServerInstance->stats->statsConnects++;
 769         this->idle_lastmsg = ServerInstance->Time();
 770
 771         /*
 772          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 773          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 774          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 775          * Don't remove this! -- w00t
 776          */
 777         MyClass = NULL;
 778         SetClass();
 779         CheckClass();
 780         CheckLines();
 781
 782         if (quitting)
 783                 return;
 784
 785         if (ServerInstance->Config->WelcomeNotice)
 786                 this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network.c_str());
 787         this->WriteNumeric(RPL_WELCOME, "%s :Welcome to the %s IRC Network %s",this->nick.c_str(), ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str());
 788         this->WriteNumeric(RPL_YOURHOSTIS, "%s :Your host is %s, running version %s",this->nick.c_str(),ServerInstance->Config->ServerName.c_str(),BRANCH);
 789         this->WriteNumeric(RPL_SERVERCREATED, "%s :This server was created %s %s", this->nick.c_str(), __TIME__, __DATE__);
 790
 791         std::string umlist = ServerInstance->Modes->UserModeList();
 792         std::string cmlist = ServerInstance->Modes->ChannelModeList();
 793         std::string pmlist = ServerInstance->Modes->ParaModeList();
 794         this->WriteNumeric(RPL_SERVERVERSION, "%s %s %s %s %s %s", this->nick.c_str(), ServerInstance->Config->ServerName.c_str(), BRANCH, umlist.c_str(), cmlist.c_str(), pmlist.c_str());
 795
 796         ServerInstance->Config->Send005(this);
 797         this->WriteNumeric(RPL_YOURUUID, "%s %s :your unique ID", this->nick.c_str(), this->uuid.c_str());
 798
 799         /* Now registered */
 800         if (ServerInstance->Users->unregistered_count)
 801                 ServerInstance->Users->unregistered_count--;
 802
 803         /* Trigger MOTD and LUSERS output, give modules a chance too */
 804         ModResult MOD_RESULT;
 805         std::string command("MOTD");
 806         std::vector<std::string> parameters;
 807         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 808         if (!MOD_RESULT)
 809                 ServerInstance->Parser->CallHandler(command, parameters, this);
 810
 811         MOD_RESULT = MOD_RES_PASSTHRU;
 812         command = "LUSERS";
 813         FIRST_MOD_RESULT(OnPreCommand, MOD_RESULT, (command, parameters, this, true, command));
 814         if (!MOD_RESULT)
 815                 ServerInstance->Parser->CallHandler(command, parameters, this);
 816
 817         if (ServerInstance->Config->RawLog)
 818                 WriteServ("PRIVMSG %s :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.", nick.c_str());
 819
 820         /*
 821          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 822          * for a user that doesn't exist yet.
 823          */
 824         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 825
 826         this->registered = REG_ALL;
 827
 828         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 829
 830         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d (class %s): %s (%s) [%s]",
 831                 this->GetServerPort(), this->MyClass->name.c_str(), GetFullRealHost().c_str(), this->GetIPString(), this->fullname.c_str());
 832         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 833         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 834         // reset the flood penalty (which could have been raised due to things like auto +x)
 835         CommandFloodPenalty = 0;
 836 }
 837
 838 void User::InvalidateCache()
 839 {
 840         /* Invalidate cache */
 841         cachedip.clear();
 842         cached_fullhost.clear();
 843         cached_hostip.clear();
 844         cached_makehost.clear();
 845         cached_fullrealhost.clear();
 846 }
 847
 848 bool User::ChangeNick(const std::string& newnick, bool force)
 849 {
 850         if (quitting)
 851         {
 852                 ServerInstance->Logs->Log("USERS", DEFAULT, "ERROR: Attempted to change nick of a quitting user: " + this->nick);
 853                 return false;
 854         }
 855
 856         ModResult MOD_RESULT;
 857
 858         if (force)
 859                 ServerInstance->NICKForced.set(this, 1);
 860         FIRST_MOD_RESULT(OnUserPreNick, MOD_RESULT, (this, newnick));
 861         ServerInstance->NICKForced.set(this, 0);
 862
 863         if (MOD_RESULT == MOD_RES_DENY)
 864         {
 865                 ServerInstance->stats->statsCollisions++;
 866                 return false;
 867         }
 868
 869         if (assign(newnick) == assign(nick))
 870         {
 871                 // case change, don't need to check Q:lines and such
 872                 // and, if it's identical including case, we can leave right now
 873                 if (newnick == nick)
 874                         return true;
 875         }
 876         else
 877         {
 878                 /*
 879                  * Don't check Q:Lines if it's a server-enforced change, just on the off-chance some fucking *moron*
 880                  * tries to Q:Line SIDs, also, this means we just get our way period, as it really should be.
 881                  * Thanks Kein for finding this. -- w00t
 882                  *
 883                  * Also don't check Q:Lines for remote nickchanges, they should have our Q:Lines anyway to enforce themselves.
 884                  *              -- w00t
 885                  */
 886                 if (IS_LOCAL(this) && !force)
 887                 {
 888                         XLine* mq = ServerInstance->XLines->MatchesLine("Q",newnick);
 889                         if (mq)
 890                         {
 891                                 if (this->registered == REG_ALL)
 892                                 {
 893                                         ServerInstance->SNO->WriteGlobalSno('a', "Q-Lined nickname %s from %s: %s",
 894                                                 newnick.c_str(), GetFullRealHost().c_str(), mq->reason.c_str());
 895                                 }
 896                                 this->WriteNumeric(432, "%s %s :Invalid nickname: %s",this->nick.c_str(), newnick.c_str(), mq->reason.c_str());
 897                                 return false;
 898                         }
 899
 900                         if (ServerInstance->Config->RestrictBannedUsers)
 901                         {
 902                                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
 903                                 {
 904                                         Channel *chan = *i;
 905                                         if (chan->GetPrefixValue(this) < VOICE_VALUE && chan->IsBanned(this))
 906                                         {
 907                                                 this->WriteNumeric(404, "%s %s :Cannot send to channel (you're banned)", this->nick.c_str(), chan->name.c_str());
 908                                                 return false;
 909                                         }
 910                                 }
 911                         }
 912                 }
 913
 914                 /*
 915                  * Uh oh.. if the nickname is in use, and it's not in use by the person using it (doh) --
 916                  * then we have a potential collide. Check whether someone else is camping on the nick
 917                  * (i.e. connect -> send NICK, don't send USER.) If they are camping, force-change the
 918                  * camper to their UID, and allow the incoming nick change.
 919                  *
 920                  * If the guy using the nick is already using it, tell the incoming nick change to gtfo,
 921                  * because the nick is already (rightfully) in use. -- w00t
 922                  */
 923                 User* InUse = ServerInstance->FindNickOnly(newnick);
 924                 if (InUse && (InUse != this))
 925                 {
 926                         if (InUse->registered != REG_ALL)
 927                         {
 928                                 /* force the camper to their UUID, and ask them to re-send a NICK. */
 929                                 InUse->WriteTo(InUse, "NICK %s", InUse->uuid.c_str());
 930                                 InUse->WriteNumeric(433, "%s %s :Nickname overruled.", InUse->nick.c_str(), InUse->nick.c_str());
 931
 932                                 ServerInstance->Users->clientlist->erase(InUse->nick);
 933                                 (*(ServerInstance->Users->clientlist))[InUse->uuid] = InUse;
 934
 935                                 InUse->nick = InUse->uuid;
 936                                 InUse->InvalidateCache();
 937                                 InUse->registered &= ~REG_NICK;
 938                         }
 939                         else
 940                         {
 941                                 /* No camping, tell the incoming user  to stop trying to change nick ;p */
 942                                 this->WriteNumeric(433, "%s %s :Nickname is already in use.", this->registered >= REG_NICK ? this->nick.c_str() : "*", newnick.c_str());
 943                                 return false;
 944                         }
 945                 }
 946         }
 947
 948         if (this->registered == REG_ALL)
 949                 this->WriteCommon("NICK %s",newnick.c_str());
 950         std::string oldnick = nick;
 951         nick = newnick;
 952
 953         InvalidateCache();
 954         ServerInstance->Users->clientlist->erase(oldnick);
 955         (*(ServerInstance->Users->clientlist))[newnick] = this;
 956
 957         if (registered == REG_ALL)
 958                 FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(this,oldnick));
 959
 960         return true;
 961 }
 962
 963 int LocalUser::GetServerPort()
 964 {
 965         switch (this->server_sa.sa.sa_family)
 966         {
 967                 case AF_INET6:
 968                         return htons(this->server_sa.in6.sin6_port);
 969                 case AF_INET:
 970                         return htons(this->server_sa.in4.sin_port);
 971         }
 972         return 0;
 973 }
 974
 975 const char* User::GetIPString()
 976 {
 977         int port;
 978         if (cachedip.empty())
 979         {
 980                 irc::sockets::satoap(client_sa, cachedip, port);
 981                 /* IP addresses starting with a : on irc are a Bad Thing (tm) */
 982                 if (cachedip.c_str()[0] == ':')
 983                         cachedip.insert(cachedip.begin(),1,'0');
 984         }
 985
 986         return cachedip.c_str();
 987 }
 988
 989 irc::sockets::cidr_mask User::GetCIDRMask()
 990 {
 991         int range = 0;
 992         switch (client_sa.sa.sa_family)
 993         {
 994                 case AF_INET6:
 995                         range = ServerInstance->Config->c_ipv6_range;
 996                         break;
 997                 case AF_INET:
 998                         range = ServerInstance->Config->c_ipv4_range;
 999                         break;
1000         }
1001         return irc::sockets::cidr_mask(client_sa, range);
1002 }
1003
1004 bool User::SetClientIP(const char* sip, bool recheck_eline)
1005 {
1006         this->InvalidateCache();
1007         return irc::sockets::aptosa(sip, 0, client_sa);
1008 }
1009
1010 void User::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
1011 {
1012         this->InvalidateCache();
1013         memcpy(&client_sa, &sa, sizeof(irc::sockets::sockaddrs));
1014 }
1015
1016 bool LocalUser::SetClientIP(const char* sip, bool recheck_eline)
1017 {
1018         irc::sockets::sockaddrs sa;
1019         if (!irc::sockets::aptosa(sip, 0, sa))
1020                 // Invalid
1021                 return false;
1022
1023         LocalUser::SetClientIP(sa, recheck_eline);
1024         return true;
1025 }
1026
1027 void LocalUser::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
1028 {
1029         if (sa != client_sa)
1030         {
1031                 User::SetClientIP(sa);
1032                 if (recheck_eline)
1033                         this->exempt = (ServerInstance->XLines->MatchesLine("E", this) != NULL);
1034
1035                 FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(this));
1036         }
1037 }
1038
1039 static std::string wide_newline("\r\n");
1040
1041 void User::Write(const std::string& text)
1042 {
1043 }
1044
1045 void User::Write(const char *text, ...)
1046 {
1047 }
1048
1049 void LocalUser::Write(const std::string& text)
1050 {
1051         if (!ServerInstance->SE->BoundsCheckFd(&eh))
1052                 return;
1053
1054         if (text.length() > MAXBUF - 2)
1055         {
1056                 // this should happen rarely or never. Crop the string at 512 and try again.
1057                 std::string try_again = text.substr(0, MAXBUF - 2);
1058                 Write(try_again);
1059                 return;
1060         }
1061
1062         ServerInstance->Logs->Log("USEROUTPUT", RAWIO, "C[%s] O %s", uuid.c_str(), text.c_str());
1063
1064         eh.AddWriteBuf(text);
1065         eh.AddWriteBuf(wide_newline);
1066
1067         ServerInstance->stats->statsSent += text.length() + 2;
1068         this->bytes_out += text.length() + 2;
1069         this->cmds_out++;
1070 }
1071
1072 /** Write()
1073  */
1074 void LocalUser::Write(const char *text, ...)
1075 {
1076         va_list argsPtr;
1077         char textbuffer[MAXBUF];
1078
1079         va_start(argsPtr, text);
1080         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1081         va_end(argsPtr);
1082
1083         this->Write(std::string(textbuffer));
1084 }
1085
1086 void User::WriteServ(const std::string& text)
1087 {
1088         this->Write(":%s %s",ServerInstance->Config->ServerName.c_str(),text.c_str());
1089 }
1090
1091 /** WriteServ()
1092  *  Same as Write(), except `text' is prefixed with `:server.name '.
1093  */
1094 void User::WriteServ(const char* text, ...)
1095 {
1096         va_list argsPtr;
1097         char textbuffer[MAXBUF];
1098
1099         va_start(argsPtr, text);
1100         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1101         va_end(argsPtr);
1102
1103         this->WriteServ(std::string(textbuffer));
1104 }
1105
1106
1107 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1108 {
1109         va_list argsPtr;
1110         char textbuffer[MAXBUF];
1111
1112         va_start(argsPtr, text);
1113         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1114         va_end(argsPtr);
1115
1116         this->WriteNumeric(numeric, std::string(textbuffer));
1117 }
1118
1119 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1120 {
1121         char textbuffer[MAXBUF];
1122         ModResult MOD_RESULT;
1123
1124         FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
1125
1126         if (MOD_RESULT == MOD_RES_DENY)
1127                 return;
1128
1129         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName.c_str(), numeric, text.c_str());
1130         this->Write(std::string(textbuffer));
1131 }
1132
1133 void User::WriteFrom(User *user, const std::string &text)
1134 {
1135         char tb[MAXBUF];
1136
1137         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost().c_str(),text.c_str());
1138
1139         this->Write(std::string(tb));
1140 }
1141
1142
1143 /* write text from an originating user to originating user */
1144
1145 void User::WriteFrom(User *user, const char* text, ...)
1146 {
1147         va_list argsPtr;
1148         char textbuffer[MAXBUF];
1149
1150         va_start(argsPtr, text);
1151         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1152         va_end(argsPtr);
1153
1154         this->WriteFrom(user, std::string(textbuffer));
1155 }
1156
1157
1158 /* write text to an destination user from a source user (e.g. user privmsg) */
1159
1160 void User::WriteTo(User *dest, const char *data, ...)
1161 {
1162         char textbuffer[MAXBUF];
1163         va_list argsPtr;
1164
1165         va_start(argsPtr, data);
1166         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1167         va_end(argsPtr);
1168
1169         this->WriteTo(dest, std::string(textbuffer));
1170 }
1171
1172 void User::WriteTo(User *dest, const std::string &data)
1173 {
1174         dest->WriteFrom(this, data);
1175 }
1176
1177 void User::WriteCommon(const char* text, ...)
1178 {
1179         char textbuffer[MAXBUF];
1180         va_list argsPtr;
1181
1182         if (this->registered != REG_ALL || quitting)
1183                 return;
1184
1185         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1186
1187         va_start(argsPtr, text);
1188         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1189         va_end(argsPtr);
1190
1191         this->WriteCommonRaw(std::string(textbuffer), true);
1192 }
1193
1194 void User::WriteCommonExcept(const char* text, ...)
1195 {
1196         char textbuffer[MAXBUF];
1197         va_list argsPtr;
1198
1199         if (this->registered != REG_ALL || quitting)
1200                 return;
1201
1202         int len = snprintf(textbuffer,MAXBUF,":%s ",this->GetFullHost().c_str());
1203
1204         va_start(argsPtr, text);
1205         vsnprintf(textbuffer + len, MAXBUF - len, text, argsPtr);
1206         va_end(argsPtr);
1207
1208         this->WriteCommonRaw(std::string(textbuffer), false);
1209 }
1210
1211 void User::WriteCommonRaw(const std::string &line, bool include_self)
1212 {
1213         if (this->registered != REG_ALL || quitting)
1214                 return;
1215
1216         LocalUser::already_sent_id++;
1217
1218         UserChanList include_c(chans);
1219         std::map<User*,bool> exceptions;
1220
1221         exceptions[this] = include_self;
1222
1223         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1224
1225         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1226         {
1227                 LocalUser* u = IS_LOCAL(i->first);
1228                 if (u && !u->quitting)
1229                 {
1230                         u->already_sent = LocalUser::already_sent_id;
1231                         if (i->second)
1232                                 u->Write(line);
1233                 }
1234         }
1235         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1236         {
1237                 Channel* c = *v;
1238                 const UserMembList* ulist = c->GetUsers();
1239                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1240                 {
1241                         LocalUser* u = IS_LOCAL(i->first);
1242                         if (u && !u->quitting && u->already_sent != LocalUser::already_sent_id)
1243                         {
1244                                 u->already_sent = LocalUser::already_sent_id;
1245                                 u->Write(line);
1246                         }
1247                 }
1248         }
1249 }
1250
1251 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1252 {
1253         char tb1[MAXBUF];
1254         char tb2[MAXBUF];
1255
1256         if (this->registered != REG_ALL)
1257                 return;
1258
1259         already_sent_t uniq_id = ++LocalUser::already_sent_id;
1260
1261         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),normal_text.c_str());
1262         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost().c_str(),oper_text.c_str());
1263         std::string out1 = tb1;
1264         std::string out2 = tb2;
1265
1266         UserChanList include_c(chans);
1267         std::map<User*,bool> exceptions;
1268
1269         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1270
1271         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1272         {
1273                 LocalUser* u = IS_LOCAL(i->first);
1274                 if (u && !u->quitting)
1275                 {
1276                         u->already_sent = uniq_id;
1277                         if (i->second)
1278                                 u->Write(IS_OPER(u) ? out2 : out1);
1279                 }
1280         }
1281         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1282         {
1283                 const UserMembList* ulist = (*v)->GetUsers();
1284                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1285                 {
1286                         LocalUser* u = IS_LOCAL(i->first);
1287                         if (u && !u->quitting && (u->already_sent != uniq_id))
1288                         {
1289                                 u->already_sent = uniq_id;
1290                                 u->Write(IS_OPER(u) ? out2 : out1);
1291                         }
1292                 }
1293         }
1294 }
1295
1296 void LocalUser::SendText(const std::string& line)
1297 {
1298         Write(line);
1299 }
1300
1301 void RemoteUser::SendText(const std::string& line)
1302 {
1303         ServerInstance->PI->PushToClient(this, line);
1304 }
1305
1306 void FakeUser::SendText(const std::string& line)
1307 {
1308 }
1309
1310 void User::SendText(const char *text, ...)
1311 {
1312         va_list argsPtr;
1313         char line[MAXBUF];
1314
1315         va_start(argsPtr, text);
1316         vsnprintf(line, MAXBUF, text, argsPtr);
1317         va_end(argsPtr);
1318
1319         SendText(std::string(line));
1320 }
1321
1322 void User::SendText(const std::string &LinePrefix, std::stringstream &TextStream)
1323 {
1324         std::string line;
1325         std::string Word;
1326         while (TextStream >> Word)
1327         {
1328                 size_t lineLength = LinePrefix.length() + line.length() + Word.length() + 13;
1329                 if (lineLength > MAXBUF)
1330                 {
1331                         SendText(LinePrefix + line);
1332                         line.clear();
1333                 }
1334                 line += " " + Word;
1335         }
1336         SendText(LinePrefix + line);
1337 }
1338
1339 /* return 0 or 1 depending if users u and u2 share one or more common channels
1340  * (used by QUIT, NICK etc which arent channel specific notices)
1341  *
1342  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1343  * the first users channels then the second users channels within the outer loop,
1344  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1345  * all possible iterations). However this new function instead checks against the
1346  * channel's userlist in the inner loop which is a std::map<User*,User*>
1347  * and saves us time as we already know what pointer value we are after.
1348  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1349  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1350  */
1351 bool User::SharesChannelWith(User *other)
1352 {
1353         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1354                 return false;
1355
1356         /* Outer loop */
1357         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1358         {
1359                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1360                  * by replacing it with a map::find which *should* be more efficient
1361                  */
1362                 if ((*i)->HasUser(other))
1363                         return true;
1364         }
1365         return false;
1366 }
1367
1368 bool User::ChangeName(const char* gecos)
1369 {
1370         if (!this->fullname.compare(gecos))
1371                 return true;
1372
1373         if (IS_LOCAL(this))
1374         {
1375                 ModResult MOD_RESULT;
1376                 FIRST_MOD_RESULT(OnChangeLocalUserGECOS, MOD_RESULT, (IS_LOCAL(this),gecos));
1377                 if (MOD_RESULT == MOD_RES_DENY)
1378                         return false;
1379                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1380         }
1381         this->fullname.assign(gecos, 0, ServerInstance->Config->Limits.MaxGecos);
1382
1383         return true;
1384 }
1385
1386 void User::DoHostCycle(const std::string &quitline)
1387 {
1388         char buffer[MAXBUF];
1389
1390         if (!ServerInstance->Config->CycleHosts)
1391                 return;
1392
1393         already_sent_t silent_id = ++LocalUser::already_sent_id;
1394         already_sent_t seen_id = ++LocalUser::already_sent_id;
1395
1396         UserChanList include_c(chans);
1397         std::map<User*,bool> exceptions;
1398
1399         FOREACH_MOD(I_OnBuildNeighborList,OnBuildNeighborList(this, include_c, exceptions));
1400
1401         // Users shouldn't see themselves quitting when host cycling
1402         exceptions.erase(this);
1403         for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
1404         {
1405                 LocalUser* u = IS_LOCAL(i->first);
1406                 if (u && !u->quitting)
1407                 {
1408                         if (i->second)
1409                         {
1410                                 u->already_sent = seen_id;
1411                                 u->Write(quitline);
1412                         }
1413                         else
1414                         {
1415                                 u->already_sent = silent_id;
1416                         }
1417                 }
1418         }
1419         for (UCListIter v = include_c.begin(); v != include_c.end(); ++v)
1420         {
1421                 Channel* c = *v;
1422                 snprintf(buffer, MAXBUF, ":%s JOIN %s", GetFullHost().c_str(), c->name.c_str());
1423                 std::string joinline(buffer);
1424                 Membership* memb = c->GetUser(this);
1425                 std::string modeline = memb->modes;
1426                 if (modeline.length() > 0)
1427                 {
1428                         for(unsigned int i=0; i < memb->modes.length(); i++)
1429                                 modeline.append(" ").append(nick);
1430                         snprintf(buffer, MAXBUF, ":%s MODE %s +%s",
1431                                 ServerInstance->Config->CycleHostsFromUser ? GetFullHost().c_str() : ServerInstance->Config->ServerName.c_str(),
1432                                 c->name.c_str(), modeline.c_str());
1433                         modeline = buffer;
1434                 }
1435
1436                 const UserMembList *ulist = c->GetUsers();
1437                 for (UserMembList::const_iterator i = ulist->begin(); i != ulist->end(); i++)
1438                 {
1439                         LocalUser* u = IS_LOCAL(i->first);
1440                         if (u == NULL || u == this)
1441                                 continue;
1442                         if (u->already_sent == silent_id)
1443                                 continue;
1444
1445                         if (u->already_sent != seen_id)
1446                         {
1447                                 u->Write(quitline);
1448                                 u->already_sent = seen_id;
1449                         }
1450                         u->Write(joinline);
1451                         if (modeline.length() > 0)
1452                                 u->Write(modeline);
1453                 }
1454         }
1455 }
1456
1457 bool User::ChangeDisplayedHost(const char* shost)
1458 {
1459         if (dhost == shost)
1460                 return true;
1461
1462         if (IS_LOCAL(this))
1463         {
1464                 ModResult MOD_RESULT;
1465                 FIRST_MOD_RESULT(OnChangeLocalUserHost, MOD_RESULT, (IS_LOCAL(this),shost));
1466                 if (MOD_RESULT == MOD_RES_DENY)
1467                         return false;
1468         }
1469
1470         FOREACH_MOD(I_OnChangeHost, OnChangeHost(this,shost));
1471
1472         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing host";
1473
1474         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1475         this->dhost.assign(shost, 0, 64);
1476
1477         this->InvalidateCache();
1478
1479         this->DoHostCycle(quitstr);
1480
1481         if (IS_LOCAL(this))
1482                 this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s %s :is now your displayed host",this->nick.c_str(),this->dhost.c_str());
1483
1484         return true;
1485 }
1486
1487 bool User::ChangeIdent(const char* newident)
1488 {
1489         if (this->ident == newident)
1490                 return true;
1491
1492         FOREACH_MOD(I_OnChangeIdent, OnChangeIdent(this,newident));
1493
1494         std::string quitstr = ":" + GetFullHost() + " QUIT :Changing ident";
1495
1496         this->ident.assign(newident, 0, ServerInstance->Config->Limits.IdentMax);
1497
1498         this->InvalidateCache();
1499
1500         this->DoHostCycle(quitstr);
1501
1502         return true;
1503 }
1504
1505 void User::SendAll(const char* command, const char* text, ...)
1506 {
1507         char textbuffer[MAXBUF];
1508         char formatbuffer[MAXBUF];
1509         va_list argsPtr;
1510
1511         va_start(argsPtr, text);
1512         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1513         va_end(argsPtr);
1514
1515         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost().c_str(), command, textbuffer);
1516         std::string fmt = formatbuffer;
1517
1518         for (LocalUserList::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1519         {
1520                 if ((*i)->registered == REG_ALL)
1521                         (*i)->Write(fmt);
1522         }
1523 }
1524
1525
1526 std::string User::ChannelList(User* source, bool spy)
1527 {
1528         std::string list;
1529
1530         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1531         {
1532                 Channel* c = *i;
1533                 /* If the target is the sender, neither +p nor +s is set, or
1534                  * the channel contains the user, it is not a spy channel
1535                  */
1536                 if (spy != (source == this || !(c->IsModeSet('p') || c->IsModeSet('s')) || c->HasUser(source)))
1537                         list.append(c->GetPrefixChar(this)).append(c->name).append(" ");
1538         }
1539
1540         return list;
1541 }
1542
1543 void User::SplitChanList(User* dest, const std::string &cl)
1544 {
1545         std::string line;
1546         std::ostringstream prefix;
1547         std::string::size_type start, pos;
1548
1549         prefix << this->nick << " " << dest->nick << " :";
1550         line = prefix.str();
1551         int namelen = ServerInstance->Config->ServerName.length() + 6;
1552
1553         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1554         {
1555                 if (line.length() + namelen + pos - start > 510)
1556                 {
1557                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1558                         line = prefix.str();
1559                 }
1560
1561                 line.append(cl.substr(start, pos - start + 1));
1562         }
1563
1564         if (line.length() != prefix.str().length())
1565         {
1566                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1567         }
1568 }
1569
1570 /*
1571  * Sets a user's connection class.
1572  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1573  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1574  * then their ip will be taken as 'priority' anyway, so for example,
1575  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1576  */
1577 void LocalUser::SetClass(const std::string &explicit_name)
1578 {
1579         ConnectClass *found = NULL;
1580
1581         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid.c_str());
1582
1583         if (!explicit_name.empty())
1584         {
1585                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1586                 {
1587                         ConnectClass* c = *i;
1588
1589                         if (explicit_name == c->name)
1590                         {
1591                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1592                                 found = c;
1593                         }
1594                 }
1595         }
1596         else
1597         {
1598                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1599                 {
1600                         ConnectClass* c = *i;
1601                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Checking %s", c->GetName().c_str());
1602
1603                         ModResult MOD_RESULT;
1604                         FIRST_MOD_RESULT(OnSetConnectClass, MOD_RESULT, (this,c));
1605                         if (MOD_RESULT == MOD_RES_DENY)
1606                                 continue;
1607                         if (MOD_RESULT == MOD_RES_ALLOW)
1608                         {
1609                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class forced by module to %s", c->GetName().c_str());
1610                                 found = c;
1611                                 break;
1612                         }
1613
1614                         if (c->type == CC_NAMED)
1615                                 continue;
1616
1617                         bool regdone = (registered != REG_NONE);
1618                         if (c->config->getBool("registered", regdone) != regdone)
1619                                 continue;
1620
1621                         /* check if host matches.. */
1622                         if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
1623                             !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
1624                         {
1625                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1626                                 continue;
1627                         }
1628
1629                         /*
1630                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1631                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1632                          */
1633                         if (c->limit && (c->GetReferenceCount() >= c->limit))
1634                         {
1635                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1636                                 continue;
1637                         }
1638
1639                         /* if it requires a port ... */
1640                         int port = c->config->getInt("port");
1641                         if (port)
1642                         {
1643                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", port);
1644
1645                                 /* and our port doesn't match, fail. */
1646                                 if (this->GetServerPort() != port)
1647                                         continue;
1648                         }
1649
1650                         if (regdone && !c->config->getString("password").empty())
1651                         {
1652                                 if (ServerInstance->PassCompare(this, c->config->getString("password"), password, c->config->getString("hash")))
1653                                 {
1654                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Bad password, skipping");
1655                                         continue;
1656                                 }
1657                         }
1658
1659                         /* we stop at the first class that meets ALL critera. */
1660                         found = c;
1661                         break;
1662                 }
1663         }
1664
1665         /*
1666          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1667          */
1668         if (found)
1669         {
1670                 MyClass = found;
1671         }
1672 }
1673
1674 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1675  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1676  * then their ip will be taken as 'priority' anyway, so for example,
1677  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1678  */
1679 ConnectClass* LocalUser::GetClass()
1680 {
1681         return MyClass;
1682 }
1683
1684 ConnectClass* User::GetClass()
1685 {
1686         return NULL;
1687 }
1688
1689 void User::PurgeEmptyChannels()
1690 {
1691         // firstly decrement the count on each channel
1692         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1693         {
1694                 Channel* c = *f;
1695                 c->DelUser(this);
1696         }
1697
1698         this->UnOper();
1699 }
1700
1701 const std::string& FakeUser::GetFullHost()
1702 {
1703         if (!ServerInstance->Config->HideWhoisServer.empty())
1704                 return ServerInstance->Config->HideWhoisServer;
1705         return server;
1706 }
1707
1708 const std::string& FakeUser::GetFullRealHost()
1709 {
1710         if (!ServerInstance->Config->HideWhoisServer.empty())
1711                 return ServerInstance->Config->HideWhoisServer;
1712         return server;
1713 }
1714
1715 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
1716         : config(tag), type(t), fakelag(true), name("unnamed"), registration_timeout(0), host(mask),
1717         pingtime(0), softsendqmax(0), hardsendqmax(0), recvqmax(0),
1718         penaltythreshold(0), commandrate(0), maxlocal(0), maxglobal(0), maxconnwarn(true), maxchans(0), limit(0)
1719 {
1720 }
1721
1722 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
1723         : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
1724         registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
1725         softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
1726         penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
1727         maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
1728         limit(parent.limit)
1729 {
1730 }
1731
1732 void ConnectClass::Update(const ConnectClass* src)
1733 {
1734         config = src->config;
1735         type = src->type;
1736         fakelag = src->fakelag;
1737         name = src->name;
1738         registration_timeout = src->registration_timeout;
1739         host = src->host;
1740         pingtime = src->pingtime;
1741         softsendqmax = src->softsendqmax;
1742         hardsendqmax = src->hardsendqmax;
1743         recvqmax = src->recvqmax;
1744         penaltythreshold = src->penaltythreshold;
1745         commandrate = src->commandrate;
1746         maxlocal = src->maxlocal;
1747         maxglobal = src->maxglobal;
1748         maxconnwarn = src->maxconnwarn;
1749         maxchans = src->maxchans;
1750         limit = src->limit;
1751 }