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