src/modules/m_spanningtree/main.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2009 Craig Edwards <craigedwards@brainbox.cc>
   6  *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
   7  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   8  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
   9  *
  10  * This file is part of InspIRCd.  InspIRCd is free software: you can
  11  * redistribute it and/or modify it under the terms of the GNU General Public
  12  * License as published by the Free Software Foundation, version 2.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  16  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23
  24 #include "inspircd.h"
  25 #include "socket.h"
  26 #include "xline.h"
  27 #include "iohook.h"
  28
  29 #include "resolvers.h"
  30 #include "main.h"
  31 #include "utils.h"
  32 #include "treeserver.h"
  33 #include "link.h"
  34 #include "treesocket.h"
  35 #include "commands.h"
  36 #include "translate.h"
  37
  38 ModuleSpanningTree::ModuleSpanningTree()
  39         : rconnect(this), rsquit(this), map(this)
  40         , commands(this)
  41         , currmembid(0)
  42         , eventprov(this, "event/spanningtree")
  43         , DNS(this, "DNS")
  44         , loopCall(false)
  45 {
  46 }
  47
  48 SpanningTreeCommands::SpanningTreeCommands(ModuleSpanningTree* module)
  49         : svsjoin(module), svspart(module), svsnick(module), metadata(module),
  50         uid(module), opertype(module), fjoin(module), ijoin(module), resync(module),
  51         fmode(module), ftopic(module), fhost(module), fident(module), fname(module),
  52         away(module), addline(module), delline(module), encap(module), idle(module),
  53         nick(module), ping(module), pong(module), push(module), save(module),
  54         server(module), squit(module), snonotice(module),
  55         endburst(module), sinfo(module)
  56 {
  57 }
  58
  59 namespace
  60 {
  61         void SetLocalUsersServer(Server* newserver)
  62         {
  63                 // Does not change the server of quitting users because those are not in the list
  64
  65                 ServerInstance->FakeClient->server = newserver;
  66                 const UserManager::LocalList& list = ServerInstance->Users.GetLocalUsers();
  67                 for (UserManager::LocalList::const_iterator i = list.begin(); i != list.end(); ++i)
  68                         (*i)->server = newserver;
  69         }
  70
  71         void ResetMembershipIds()
  72         {
  73                 // Set all membership ids to 0
  74                 const UserManager::LocalList& list = ServerInstance->Users.GetLocalUsers();
  75                 for (UserManager::LocalList::iterator i = list.begin(); i != list.end(); ++i)
  76                 {
  77                         LocalUser* user = *i;
  78                         for (User::ChanList::iterator j = user->chans.begin(); j != user->chans.end(); ++j)
  79                                 (*j)->id = 0;
  80                 }
  81         }
  82 }
  83
  84 void ModuleSpanningTree::init()
  85 {
  86         ServerInstance->SNO->EnableSnomask('l', "LINK");
  87
  88         ResetMembershipIds();
  89
  90         Utils = new SpanningTreeUtilities(this);
  91         Utils->TreeRoot = new TreeServer;
  92
  93         ServerInstance->PI = &protocolinterface;
  94
  95         delete ServerInstance->FakeClient->server;
  96         SetLocalUsersServer(Utils->TreeRoot);
  97 }
  98
  99 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
 100 {
 101         std::string Parent = Utils->TreeRoot->GetName();
 102         if (Current->GetParent())
 103         {
 104                 Parent = Current->GetParent()->GetName();
 105         }
 106
 107         const TreeServer::ChildServers& children = Current->GetChildren();
 108         for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i)
 109         {
 110                 TreeServer* server = *i;
 111                 if ((server->Hidden) || ((Utils->HideULines) && (server->IsULine())))
 112                 {
 113                         if (user->IsOper())
 114                         {
 115                                  ShowLinks(server, user, hops+1);
 116                         }
 117                 }
 118                 else
 119                 {
 120                         ShowLinks(server, user, hops+1);
 121                 }
 122         }
 123         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
 124         if ((Utils->HideULines) && (Current->IsULine()) && (!user->IsOper()))
 125                 return;
 126         /* Or if the server is hidden and they're not an oper */
 127         else if ((Current->Hidden) && (!user->IsOper()))
 128                 return;
 129
 130         user->WriteNumeric(RPL_LINKS, Current->GetName(),
 131                         (((Utils->FlatLinks) && (!user->IsOper())) ? ServerInstance->Config->ServerName : Parent),
 132                         InspIRCd::Format("%d %s", (((Utils->FlatLinks) && (!user->IsOper())) ? 0 : hops), Current->GetDesc().c_str()));
 133 }
 134
 135 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 136 {
 137         ShowLinks(Utils->TreeRoot,user,0);
 138         user->WriteNumeric(RPL_ENDOFLINKS, '*', "End of /LINKS list.");
 139 }
 140
 141 std::string ModuleSpanningTree::TimeToStr(time_t secs)
 142 {
 143         time_t mins_up = secs / 60;
 144         time_t hours_up = mins_up / 60;
 145         time_t days_up = hours_up / 24;
 146         secs = secs % 60;
 147         mins_up = mins_up % 60;
 148         hours_up = hours_up % 24;
 149         return ((days_up ? (ConvToStr(days_up) + "d") : "")
 150                         + (hours_up ? (ConvToStr(hours_up) + "h") : "")
 151                         + (mins_up ? (ConvToStr(mins_up) + "m") : "")
 152                         + ConvToStr(secs) + "s");
 153 }
 154
 155 void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
 156 {
 157         if (!a)
 158                 return;
 159         for(unsigned int j=0; j < a->servers.size(); j++)
 160         {
 161                 if (Utils->FindServer(a->servers[j]))
 162                 {
 163                         // found something in this block. Should the server fail,
 164                         // we want to start at the start of the list, not in the
 165                         // middle where we left off
 166                         a->position = -1;
 167                         return;
 168                 }
 169         }
 170         if (on_timer && a->position >= 0)
 171                 return;
 172         if (!on_timer && a->position < 0)
 173                 return;
 174
 175         a->position++;
 176         while (a->position < (int)a->servers.size())
 177         {
 178                 Link* x = Utils->FindLink(a->servers[a->position]);
 179                 if (x)
 180                 {
 181                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 182                         ConnectServer(x, a);
 183                         return;
 184                 }
 185                 a->position++;
 186         }
 187         // Autoconnect chain has been fully iterated; start at the beginning on the
 188         // next AutoConnectServers run
 189         a->position = -1;
 190 }
 191
 192 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 193 {
 194         bool ipvalid = true;
 195
 196         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
 197         {
 198                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 199                 return;
 200         }
 201
 202         DNS::QueryType start_type = DNS::QUERY_AAAA;
 203         if (strchr(x->IPAddr.c_str(),':'))
 204         {
 205                 in6_addr n;
 206                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 207                         ipvalid = false;
 208         }
 209         else
 210         {
 211                 in_addr n;
 212                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 213                         ipvalid = false;
 214         }
 215
 216         /* Do we already have an IP? If so, no need to resolve it. */
 217         if (ipvalid)
 218         {
 219                 // Create a TreeServer object that will start connecting immediately in the background
 220                 TreeSocket* newsocket = new TreeSocket(x, y, x->IPAddr);
 221                 if (newsocket->GetFd() > -1)
 222                 {
 223                         /* Handled automatically on success */
 224                 }
 225                 else
 226                 {
 227                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
 228                                 x->Name.c_str(), newsocket->getError().c_str());
 229                         ServerInstance->GlobalCulls.AddItem(newsocket);
 230                 }
 231         }
 232         else if (!DNS)
 233         {
 234                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: Hostname given and m_dns.so is not loaded, unable to resolve.", x->Name.c_str());
 235         }
 236         else
 237         {
 238                 ServernameResolver* snr = new ServernameResolver(*DNS, x->IPAddr, x, start_type, y);
 239                 try
 240                 {
 241                         DNS->Process(snr);
 242                 }
 243                 catch (DNS::Exception& e)
 244                 {
 245                         delete snr;
 246                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason().c_str());
 247                         ConnectServer(y, false);
 248                 }
 249         }
 250 }
 251
 252 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 253 {
 254         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 255         {
 256                 Autoconnect* x = *i;
 257                 if (curtime >= x->NextConnectTime)
 258                 {
 259                         x->NextConnectTime = curtime + x->Period;
 260                         ConnectServer(x, true);
 261                 }
 262         }
 263 }
 264
 265 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 266 {
 267         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 268         while (i != Utils->timeoutlist.end())
 269         {
 270                 TreeSocket* s = i->first;
 271                 std::pair<std::string, int> p = i->second;
 272                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 273                 i++;
 274                 if (s->GetLinkState() == DYING)
 275                 {
 276                         Utils->timeoutlist.erase(me);
 277                         s->Close();
 278                 }
 279                 else if (curtime > s->age + p.second)
 280                 {
 281                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 282                         Utils->timeoutlist.erase(me);
 283                         s->Close();
 284                 }
 285         }
 286 }
 287
 288 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 289 {
 290         // We've already confirmed that !parameters.empty(), so this is safe
 291         TreeServer* found = Utils->FindServerMask(parameters[0]);
 292         if (found)
 293         {
 294                 if (found == Utils->TreeRoot)
 295                 {
 296                         // Pass to default VERSION handler.
 297                         return MOD_RES_PASSTHRU;
 298                 }
 299
 300                 // If an oper wants to see the version then show the full version string instead of the normal,
 301                 // but only if it is non-empty.
 302                 // If it's empty it might be that the server is still syncing (full version hasn't arrived yet)
 303                 // or the server is a 2.0 server and does not send a full version.
 304                 bool showfull = ((user->IsOper()) && (!found->GetFullVersion().empty()));
 305                 const std::string& Version = (showfull ? found->GetFullVersion() : found->GetVersion());
 306                 user->WriteNumeric(RPL_VERSION, Version);
 307         }
 308         else
 309         {
 310                 user->WriteNumeric(ERR_NOSUCHSERVER, parameters[0], "No such server");
 311         }
 312         return MOD_RES_DENY;
 313 }
 314
 315 /* This method will attempt to get a message to a remote user.
 316  */
 317 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 318 {
 319         std::string text;
 320         VAFORMAT(text, format, format);
 321
 322         if (IS_LOCAL(user))
 323                 user->WriteNotice(text);
 324         else
 325                 ServerInstance->PI->SendUserNotice(user, text);
 326 }
 327
 328 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 329 {
 330         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 331         {
 332                 Link* x = *i;
 333                 if (InspIRCd::Match(x->Name.c_str(),parameters[0], rfc_case_insensitive_map))
 334                 {
 335                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
 336                         {
 337                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 338                                 return MOD_RES_DENY;
 339                         }
 340
 341                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 342                         if (!CheckDupe)
 343                         {
 344                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 345                                 ConnectServer(x);
 346                                 return MOD_RES_DENY;
 347                         }
 348                         else
 349                         {
 350                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002", x->Name.c_str(), CheckDupe->GetParent()->GetName().c_str());
 351                                 return MOD_RES_DENY;
 352                         }
 353                 }
 354         }
 355         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 356         return MOD_RES_DENY;
 357 }
 358
 359 void ModuleSpanningTree::OnUserInvite(User* source, User* dest, Channel* channel, time_t expiry, unsigned int notifyrank, CUList& notifyexcepts)
 360 {
 361         if (IS_LOCAL(source))
 362         {
 363                 CmdBuilder params(source, "INVITE");
 364                 params.push_back(dest->uuid);
 365                 params.push_back(channel->name);
 366                 params.push_int(channel->age);
 367                 params.push_back(ConvToStr(expiry));
 368                 params.Broadcast();
 369         }
 370 }
 371
 372 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 373 {
 374         // Drop remote events on the floor.
 375         if (!IS_LOCAL(user))
 376                 return;
 377
 378         CommandFTopic::Builder(user, chan).Broadcast();
 379 }
 380
 381 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string& text, char status, const CUList& exempt_list, MessageType msgtype)
 382 {
 383         if (!IS_LOCAL(user))
 384                 return;
 385
 386         const char* message_type = (msgtype == MSG_PRIVMSG ? "PRIVMSG" : "NOTICE");
 387         if (target_type == TYPE_USER)
 388         {
 389                 User* d = (User*) dest;
 390                 if (!IS_LOCAL(d))
 391                 {
 392                         CmdBuilder params(user, message_type);
 393                         params.push_back(d->uuid);
 394                         params.push_last(text);
 395                         params.Unicast(d);
 396                 }
 397         }
 398         else if (target_type == TYPE_CHANNEL)
 399         {
 400                 Utils->SendChannelMessage(user->uuid, (Channel*)dest, text, status, exempt_list, message_type);
 401         }
 402         else if (target_type == TYPE_SERVER)
 403         {
 404                 char* target = (char*) dest;
 405                 CmdBuilder par(user, message_type);
 406                 par.push_back(target);
 407                 par.push_last(text);
 408                 par.Broadcast();
 409         }
 410 }
 411
 412 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 413 {
 414         AutoConnectServers(curtime);
 415         DoConnectTimeout(curtime);
 416 }
 417
 418 void ModuleSpanningTree::OnUserConnect(LocalUser* user)
 419 {
 420         if (user->quitting)
 421                 return;
 422
 423         CommandUID::Builder(user).Broadcast();
 424
 425         if (user->IsOper())
 426                 CommandOpertype::Builder(user).Broadcast();
 427
 428         for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
 429         {
 430                 ExtensionItem* item = i->first;
 431                 std::string value = item->serialize(FORMAT_NETWORK, user, i->second);
 432                 if (!value.empty())
 433                         ServerInstance->PI->SendMetaData(user, item->name, value);
 434         }
 435
 436         Utils->TreeRoot->UserCount++;
 437 }
 438
 439 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created_by_local, CUList& excepts)
 440 {
 441         // Only do this for local users
 442         if (!IS_LOCAL(memb->user))
 443                 return;
 444
 445         // Assign the current membership id to the new Membership and increase it
 446         memb->id = currmembid++;
 447
 448         if (created_by_local)
 449         {
 450                 CommandFJoin::Builder params(memb->chan);
 451                 params.add(memb);
 452                 params.finalize();
 453                 params.Broadcast();
 454         }
 455         else
 456         {
 457                 CmdBuilder params(memb->user, "IJOIN");
 458                 params.push_back(memb->chan->name);
 459                 params.push_int(memb->id);
 460                 if (!memb->modes.empty())
 461                 {
 462                         params.push_back(ConvToStr(memb->chan->age));
 463                         params.push_back(memb->modes);
 464                 }
 465                 params.Broadcast();
 466         }
 467 }
 468
 469 void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
 470 {
 471         if (user->registered != REG_ALL || !IS_LOCAL(user))
 472                 return;
 473
 474         CmdBuilder(user, "FHOST").push(newhost).Broadcast();
 475 }
 476
 477 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 478 {
 479         if (user->registered != REG_ALL || !IS_LOCAL(user))
 480                 return;
 481
 482         CmdBuilder(user, "FNAME").push_last(gecos).Broadcast();
 483 }
 484
 485 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 486 {
 487         if ((user->registered != REG_ALL) || (!IS_LOCAL(user)))
 488                 return;
 489
 490         CmdBuilder(user, "FIDENT").push(ident).Broadcast();
 491 }
 492
 493 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 494 {
 495         if (IS_LOCAL(memb->user))
 496         {
 497                 CmdBuilder params(memb->user, "PART");
 498                 params.push_back(memb->chan->name);
 499                 if (!partmessage.empty())
 500                         params.push_last(partmessage);
 501                 params.Broadcast();
 502         }
 503 }
 504
 505 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 506 {
 507         if (IS_LOCAL(user))
 508         {
 509                 if (oper_message != reason)
 510                         ServerInstance->PI->SendMetaData(user, "operquit", oper_message);
 511
 512                 CmdBuilder(user, "QUIT").push_last(reason).Broadcast();
 513         }
 514         else
 515         {
 516                 // Hide the message if one of the following is true:
 517                 // - User is being quit due to a netsplit and quietbursts is on
 518                 // - Server is a silent uline
 519                 TreeServer* server = TreeServer::Get(user);
 520                 bool hide = (((server->IsDead()) && (Utils->quiet_bursts)) || (server->IsSilentULine()));
 521                 if (!hide)
 522                 {
 523                         ServerInstance->SNO->WriteToSnoMask('Q', "Client exiting on server %s: %s (%s) [%s]",
 524                                 user->server->GetName().c_str(), user->GetFullRealHost().c_str(), user->GetIPString().c_str(), oper_message.c_str());
 525                 }
 526         }
 527
 528         // Regardless, update the UserCount
 529         TreeServer::Get(user)->UserCount--;
 530 }
 531
 532 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 533 {
 534         if (IS_LOCAL(user))
 535         {
 536                 // The nick TS is updated by the core, we don't do it
 537                 CmdBuilder params(user, "NICK");
 538                 params.push_back(user->nick);
 539                 params.push_back(ConvToStr(user->age));
 540                 params.Broadcast();
 541         }
 542         else if (!loopCall)
 543         {
 544                 ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "WARNING: Changed nick of remote user %s from %s to %s TS %lu by ourselves!", user->uuid.c_str(), oldnick.c_str(), user->nick.c_str(), (unsigned long) user->age);
 545         }
 546 }
 547
 548 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 549 {
 550         if ((!IS_LOCAL(source)) && (source != ServerInstance->FakeClient))
 551                 return;
 552
 553         CmdBuilder params(source, "KICK");
 554         params.push_back(memb->chan->name);
 555         params.push_back(memb->user->uuid);
 556         // If a remote user is being kicked by us then send the membership id in the kick too
 557         if (!IS_LOCAL(memb->user))
 558                 params.push_int(memb->id);
 559         params.push_last(reason);
 560         params.Broadcast();
 561 }
 562
 563 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 564 {
 565         if (loopCall)
 566                 return; // Don't generate a REHASH here if we're in the middle of processing a message that generated this one
 567
 568         ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "OnPreRehash called with param %s", parameter.c_str());
 569
 570         // Send out to other servers
 571         if (!parameter.empty() && parameter[0] != '-')
 572         {
 573                 CmdBuilder params((user ? user->uuid : ServerInstance->Config->GetSID()), "REHASH");
 574                 params.push_back(parameter);
 575                 params.Forward(user ? TreeServer::Get(user)->GetRoute() : NULL);
 576         }
 577 }
 578
 579 void ModuleSpanningTree::ReadConfig(ConfigStatus& status)
 580 {
 581         // Did this rehash change the description of this server?
 582         const std::string& newdesc = ServerInstance->Config->ServerDesc;
 583         if (newdesc != Utils->TreeRoot->GetDesc())
 584         {
 585                 // Broadcast a SINFO desc message to let the network know about the new description. This is the description
 586                 // string that is sent in the SERVER message initially and shown for example in WHOIS.
 587                 // We don't need to update the field itself in the Server object - the core does that.
 588                 CommandSInfo::Builder(Utils->TreeRoot, "desc", newdesc).Broadcast();
 589         }
 590
 591         // Re-read config stuff
 592         try
 593         {
 594                 Utils->ReadConfiguration();
 595         }
 596         catch (ModuleException& e)
 597         {
 598                 // Refresh the IP cache anyway, so servers read before the error will be allowed to connect
 599                 Utils->RefreshIPCache();
 600                 // Always warn local opers with snomask +l, also warn globally (snomask +L) if the rehash was issued by a remote user
 601                 std::string msg = "Error in configuration: ";
 602                 msg.append(e.GetReason());
 603                 ServerInstance->SNO->WriteToSnoMask('l', msg);
 604                 if (status.srcuser && !IS_LOCAL(status.srcuser))
 605                         ServerInstance->PI->SendSNONotice('L', msg);
 606         }
 607 }
 608
 609 void ModuleSpanningTree::OnLoadModule(Module* mod)
 610 {
 611         std::string data;
 612         data.push_back('+');
 613         data.append(mod->ModuleSourceFile);
 614         Version v = mod->GetVersion();
 615         if (!v.link_data.empty())
 616         {
 617                 data.push_back('=');
 618                 data.append(v.link_data);
 619         }
 620         ServerInstance->PI->SendMetaData("modules", data);
 621 }
 622
 623 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 624 {
 625         if (!Utils)
 626                 return;
 627         ServerInstance->PI->SendMetaData("modules", "-" + mod->ModuleSourceFile);
 628
 629 restart:
 630         // Close all connections which use an IO hook provided by this module
 631         const TreeServer::ChildServers& list = Utils->TreeRoot->GetChildren();
 632         for (TreeServer::ChildServers::const_iterator i = list.begin(); i != list.end(); ++i)
 633         {
 634                 TreeSocket* sock = (*i)->GetSocket();
 635                 if (sock->GetIOHook() && sock->GetIOHook()->prov->creator == mod)
 636                 {
 637                         sock->SendError("SSL module unloaded");
 638                         sock->Close();
 639                         // XXX: The list we're iterating is modified by TreeServer::SQuit() which is called by Close()
 640                         goto restart;
 641                 }
 642         }
 643
 644         for (SpanningTreeUtilities::TimeoutList::const_iterator i = Utils->timeoutlist.begin(); i != Utils->timeoutlist.end(); ++i)
 645         {
 646                 TreeSocket* sock = i->first;
 647                 if (sock->GetIOHook() && sock->GetIOHook()->prov->creator == mod)
 648                         sock->Close();
 649         }
 650 }
 651
 652 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 653 {
 654         if (user->registered != REG_ALL || !IS_LOCAL(user))
 655                 return;
 656
 657         // Note: The protocol does not allow direct umode +o;
 658         // sending OPERTYPE infers +o modechange locally.
 659         CommandOpertype::Builder(user).Broadcast();
 660 }
 661
 662 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 663 {
 664         if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
 665                 return;
 666
 667         if (!user)
 668                 user = ServerInstance->FakeClient;
 669
 670         CommandAddLine::Builder(x, user).Broadcast();
 671 }
 672
 673 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 674 {
 675         if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
 676                 return;
 677
 678         if (!user)
 679                 user = ServerInstance->FakeClient;
 680
 681         CmdBuilder params(user, "DELLINE");
 682         params.push_back(x->type);
 683         params.push_back(x->Displayable());
 684         params.Broadcast();
 685 }
 686
 687 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 688 {
 689         if (IS_LOCAL(user))
 690                 CommandAway::Builder(user, awaymsg).Broadcast();
 691
 692         return MOD_RES_PASSTHRU;
 693 }
 694
 695 void ModuleSpanningTree::OnMode(User* source, User* u, Channel* c, const Modes::ChangeList& modes, ModeParser::ModeProcessFlag processflags, const std::string& output_mode)
 696 {
 697         if (processflags & ModeParser::MODE_LOCALONLY)
 698                 return;
 699
 700         if (u)
 701         {
 702                 if (u->registered != REG_ALL)
 703                         return;
 704
 705                 CmdBuilder params(source, "MODE");
 706                 params.push(u->uuid);
 707                 params.push(output_mode);
 708                 params.push_raw(Translate::ModeChangeListToParams(modes.getlist()));
 709                 params.Broadcast();
 710         }
 711         else
 712         {
 713                 CmdBuilder params(source, "FMODE");
 714                 params.push(c->name);
 715                 params.push_int(c->age);
 716                 params.push(output_mode);
 717                 params.push_raw(Translate::ModeChangeListToParams(modes.getlist()));
 718                 params.Broadcast();
 719         }
 720 }
 721
 722 CullResult ModuleSpanningTree::cull()
 723 {
 724         if (Utils)
 725                 Utils->cull();
 726         return this->Module::cull();
 727 }
 728
 729 ModuleSpanningTree::~ModuleSpanningTree()
 730 {
 731         ServerInstance->PI = &ServerInstance->DefaultProtocolInterface;
 732
 733         Server* newsrv = new Server(ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
 734         SetLocalUsersServer(newsrv);
 735
 736         delete Utils;
 737 }
 738
 739 Version ModuleSpanningTree::GetVersion()
 740 {
 741         return Version("Allows servers to be linked", VF_VENDOR);
 742 }
 743
 744 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 745  * so that any activity it sees is FINAL, e.g. we arent going to send out
 746  * a NICK message before m_cloaking has finished putting the +x on the user,
 747  * etc etc.
 748  * Therefore, we set our priority to PRIORITY_LAST to make sure we end up at the END of
 749  * the module call queue.
 750  */
 751 void ModuleSpanningTree::Prioritize()
 752 {
 753         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
 754 }
 755
 756 MODULE_INIT(ModuleSpanningTree)