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(NULL)
  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         commands = new SpanningTreeCommands(this);
  93
  94         ServerInstance->PI = &protocolinterface;
  95
  96         delete ServerInstance->FakeClient->server;
  97         SetLocalUsersServer(Utils->TreeRoot);
  98 }
  99
 100 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
 101 {
 102         std::string Parent = Utils->TreeRoot->GetName();
 103         if (Current->GetParent())
 104         {
 105                 Parent = Current->GetParent()->GetName();
 106         }
 107
 108         const TreeServer::ChildServers& children = Current->GetChildren();
 109         for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i)
 110         {
 111                 TreeServer* server = *i;
 112                 if ((server->Hidden) || ((Utils->HideULines) && (server->IsULine())))
 113                 {
 114                         if (user->IsOper())
 115                         {
 116                                  ShowLinks(server, user, hops+1);
 117                         }
 118                 }
 119                 else
 120                 {
 121                         ShowLinks(server, user, hops+1);
 122                 }
 123         }
 124         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
 125         if ((Utils->HideULines) && (Current->IsULine()) && (!user->IsOper()))
 126                 return;
 127         /* Or if the server is hidden and they're not an oper */
 128         else if ((Current->Hidden) && (!user->IsOper()))
 129                 return;
 130
 131         user->WriteNumeric(RPL_LINKS, "%s %s :%d %s",   Current->GetName().c_str(),
 132                         (Utils->FlatLinks && (!user->IsOper())) ? ServerInstance->Config->ServerName.c_str() : Parent.c_str(),
 133                         (Utils->FlatLinks && (!user->IsOper())) ? 0 : hops,
 134                         Current->GetDesc().c_str());
 135 }
 136
 137 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 138 {
 139         ShowLinks(Utils->TreeRoot,user,0);
 140         user->WriteNumeric(RPL_ENDOFLINKS, "* :End of /LINKS list.");
 141 }
 142
 143 std::string ModuleSpanningTree::TimeToStr(time_t secs)
 144 {
 145         time_t mins_up = secs / 60;
 146         time_t hours_up = mins_up / 60;
 147         time_t days_up = hours_up / 24;
 148         secs = secs % 60;
 149         mins_up = mins_up % 60;
 150         hours_up = hours_up % 24;
 151         return ((days_up ? (ConvToStr(days_up) + "d") : "")
 152                         + (hours_up ? (ConvToStr(hours_up) + "h") : "")
 153                         + (mins_up ? (ConvToStr(mins_up) + "m") : "")
 154                         + ConvToStr(secs) + "s");
 155 }
 156
 157 void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
 158 {
 159         if (!a)
 160                 return;
 161         for(unsigned int j=0; j < a->servers.size(); j++)
 162         {
 163                 if (Utils->FindServer(a->servers[j]))
 164                 {
 165                         // found something in this block. Should the server fail,
 166                         // we want to start at the start of the list, not in the
 167                         // middle where we left off
 168                         a->position = -1;
 169                         return;
 170                 }
 171         }
 172         if (on_timer && a->position >= 0)
 173                 return;
 174         if (!on_timer && a->position < 0)
 175                 return;
 176
 177         a->position++;
 178         while (a->position < (int)a->servers.size())
 179         {
 180                 Link* x = Utils->FindLink(a->servers[a->position]);
 181                 if (x)
 182                 {
 183                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 184                         ConnectServer(x, a);
 185                         return;
 186                 }
 187                 a->position++;
 188         }
 189         // Autoconnect chain has been fully iterated; start at the beginning on the
 190         // next AutoConnectServers run
 191         a->position = -1;
 192 }
 193
 194 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 195 {
 196         bool ipvalid = true;
 197
 198         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
 199         {
 200                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 201                 return;
 202         }
 203
 204         DNS::QueryType start_type = DNS::QUERY_AAAA;
 205         if (strchr(x->IPAddr.c_str(),':'))
 206         {
 207                 in6_addr n;
 208                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 209                         ipvalid = false;
 210         }
 211         else
 212         {
 213                 in_addr n;
 214                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 215                         ipvalid = false;
 216         }
 217
 218         /* Do we already have an IP? If so, no need to resolve it. */
 219         if (ipvalid)
 220         {
 221                 /* Gave a hook, but it wasnt one we know */
 222                 TreeSocket* newsocket = new TreeSocket(x, y, x->IPAddr);
 223                 if (newsocket->GetFd() > -1)
 224                 {
 225                         /* Handled automatically on success */
 226                 }
 227                 else
 228                 {
 229                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
 230                                 x->Name.c_str(), newsocket->getError().c_str());
 231                         ServerInstance->GlobalCulls.AddItem(newsocket);
 232                 }
 233         }
 234         else if (!DNS)
 235         {
 236                 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());
 237         }
 238         else
 239         {
 240                 ServernameResolver* snr = new ServernameResolver(*DNS, x->IPAddr, x, start_type, y);
 241                 try
 242                 {
 243                         DNS->Process(snr);
 244                 }
 245                 catch (DNS::Exception& e)
 246                 {
 247                         delete snr;
 248                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason().c_str());
 249                         ConnectServer(y, false);
 250                 }
 251         }
 252 }
 253
 254 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 255 {
 256         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 257         {
 258                 Autoconnect* x = *i;
 259                 if (curtime >= x->NextConnectTime)
 260                 {
 261                         x->NextConnectTime = curtime + x->Period;
 262                         ConnectServer(x, true);
 263                 }
 264         }
 265 }
 266
 267 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 268 {
 269         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 270         while (i != Utils->timeoutlist.end())
 271         {
 272                 TreeSocket* s = i->first;
 273                 std::pair<std::string, int> p = i->second;
 274                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 275                 i++;
 276                 if (s->GetLinkState() == DYING)
 277                 {
 278                         Utils->timeoutlist.erase(me);
 279                         s->Close();
 280                 }
 281                 else if (curtime > s->age + p.second)
 282                 {
 283                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 284                         Utils->timeoutlist.erase(me);
 285                         s->Close();
 286                 }
 287         }
 288 }
 289
 290 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 291 {
 292         // we've already checked if pcnt > 0, so this is safe
 293         TreeServer* found = Utils->FindServerMask(parameters[0]);
 294         if (found)
 295         {
 296                 if (found == Utils->TreeRoot)
 297                 {
 298                         // Pass to default VERSION handler.
 299                         return MOD_RES_PASSTHRU;
 300                 }
 301
 302                 // If an oper wants to see the version then show the full version string instead of the normal,
 303                 // but only if it is non-empty.
 304                 // If it's empty it might be that the server is still syncing (full version hasn't arrived yet)
 305                 // or the server is a 2.0 server and does not send a full version.
 306                 bool showfull = ((user->IsOper()) && (!found->GetFullVersion().empty()));
 307                 const std::string& Version = (showfull ? found->GetFullVersion() : found->GetVersion());
 308                 user->WriteNumeric(RPL_VERSION, ":%s", Version.c_str());
 309         }
 310         else
 311         {
 312                 user->WriteNumeric(ERR_NOSUCHSERVER, "%s :No such server", parameters[0].c_str());
 313         }
 314         return MOD_RES_DENY;
 315 }
 316
 317 /* This method will attempt to get a message to a remote user.
 318  */
 319 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 320 {
 321         std::string text;
 322         VAFORMAT(text, format, format);
 323
 324         if (IS_LOCAL(user))
 325                 user->WriteNotice(text);
 326         else
 327                 ServerInstance->PI->SendUserNotice(user, text);
 328 }
 329
 330 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 331 {
 332         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 333         {
 334                 Link* x = *i;
 335                 if (InspIRCd::Match(x->Name.c_str(),parameters[0], rfc_case_insensitive_map))
 336                 {
 337                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
 338                         {
 339                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 340                                 return MOD_RES_DENY;
 341                         }
 342
 343                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 344                         if (!CheckDupe)
 345                         {
 346                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 347                                 ConnectServer(x);
 348                                 return MOD_RES_DENY;
 349                         }
 350                         else
 351                         {
 352                                 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());
 353                                 return MOD_RES_DENY;
 354                         }
 355                 }
 356         }
 357         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 358         return MOD_RES_DENY;
 359 }
 360
 361 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
 362 {
 363         if (IS_LOCAL(source))
 364         {
 365                 CmdBuilder params(source, "INVITE");
 366                 params.push_back(dest->uuid);
 367                 params.push_back(channel->name);
 368                 params.push_int(channel->age);
 369                 params.push_back(ConvToStr(expiry));
 370                 params.Broadcast();
 371         }
 372 }
 373
 374 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 375 {
 376         // Drop remote events on the floor.
 377         if (!IS_LOCAL(user))
 378                 return;
 379
 380         CommandFTopic::Builder(user, chan).Broadcast();
 381 }
 382
 383 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string& text, char status, const CUList& exempt_list, MessageType msgtype)
 384 {
 385         if (!IS_LOCAL(user))
 386                 return;
 387
 388         const char* message_type = (msgtype == MSG_PRIVMSG ? "PRIVMSG" : "NOTICE");
 389         if (target_type == TYPE_USER)
 390         {
 391                 User* d = (User*) dest;
 392                 if (!IS_LOCAL(d))
 393                 {
 394                         CmdBuilder params(user, message_type);
 395                         params.push_back(d->uuid);
 396                         params.push_last(text);
 397                         params.Unicast(d);
 398                 }
 399         }
 400         else if (target_type == TYPE_CHANNEL)
 401         {
 402                 Utils->SendChannelMessage(user->uuid, (Channel*)dest, text, status, exempt_list, message_type);
 403         }
 404         else if (target_type == TYPE_SERVER)
 405         {
 406                 char* target = (char*) dest;
 407                 CmdBuilder par(user, message_type);
 408                 par.push_back(target);
 409                 par.push_last(text);
 410                 par.Broadcast();
 411         }
 412 }
 413
 414 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 415 {
 416         AutoConnectServers(curtime);
 417         DoConnectTimeout(curtime);
 418 }
 419
 420 void ModuleSpanningTree::OnUserConnect(LocalUser* user)
 421 {
 422         if (user->quitting)
 423                 return;
 424
 425         CommandUID::Builder(user).Broadcast();
 426
 427         if (user->IsOper())
 428                 CommandOpertype::Builder(user).Broadcast();
 429
 430         for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
 431         {
 432                 ExtensionItem* item = i->first;
 433                 std::string value = item->serialize(FORMAT_NETWORK, user, i->second);
 434                 if (!value.empty())
 435                         ServerInstance->PI->SendMetaData(user, item->name, value);
 436         }
 437
 438         Utils->TreeRoot->UserCount++;
 439 }
 440
 441 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created_by_local, CUList& excepts)
 442 {
 443         // Only do this for local users
 444         if (!IS_LOCAL(memb->user))
 445                 return;
 446
 447         // Assign the current membership id to the new Membership and increase it
 448         memb->id = currmembid++;
 449
 450         if (created_by_local)
 451         {
 452                 CommandFJoin::Builder params(memb->chan);
 453                 params.add(memb);
 454                 params.finalize();
 455                 params.Broadcast();
 456         }
 457         else
 458         {
 459                 CmdBuilder params(memb->user, "IJOIN");
 460                 params.push_back(memb->chan->name);
 461                 params.push_int(memb->id);
 462                 if (!memb->modes.empty())
 463                 {
 464                         params.push_back(ConvToStr(memb->chan->age));
 465                         params.push_back(memb->modes);
 466                 }
 467                 params.Broadcast();
 468         }
 469 }
 470
 471 void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
 472 {
 473         if (user->registered != REG_ALL || !IS_LOCAL(user))
 474                 return;
 475
 476         CmdBuilder(user, "FHOST").push(newhost).Broadcast();
 477 }
 478
 479 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 480 {
 481         if (user->registered != REG_ALL || !IS_LOCAL(user))
 482                 return;
 483
 484         CmdBuilder(user, "FNAME").push_last(gecos).Broadcast();
 485 }
 486
 487 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 488 {
 489         if ((user->registered != REG_ALL) || (!IS_LOCAL(user)))
 490                 return;
 491
 492         CmdBuilder(user, "FIDENT").push(ident).Broadcast();
 493 }
 494
 495 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 496 {
 497         if (IS_LOCAL(memb->user))
 498         {
 499                 CmdBuilder params(memb->user, "PART");
 500                 params.push_back(memb->chan->name);
 501                 if (!partmessage.empty())
 502                         params.push_last(partmessage);
 503                 params.Broadcast();
 504         }
 505 }
 506
 507 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 508 {
 509         if (IS_LOCAL(user))
 510         {
 511                 if (oper_message != reason)
 512                         ServerInstance->PI->SendMetaData(user, "operquit", oper_message);
 513
 514                 CmdBuilder(user, "QUIT").push_last(reason).Broadcast();
 515         }
 516         else
 517         {
 518                 // Hide the message if one of the following is true:
 519                 // - User is being quit due to a netsplit and quietbursts is on
 520                 // - Server is a silent uline
 521                 TreeServer* server = TreeServer::Get(user);
 522                 bool hide = (((server->IsDead()) && (Utils->quiet_bursts)) || (server->IsSilentULine()));
 523                 if (!hide)
 524                 {
 525                         ServerInstance->SNO->WriteToSnoMask('Q', "Client exiting on server %s: %s (%s) [%s]",
 526                                 user->server->GetName().c_str(), user->GetFullRealHost().c_str(), user->GetIPString().c_str(), oper_message.c_str());
 527                 }
 528         }
 529
 530         // Regardless, We need to modify the user Counts..
 531         TreeServer::Get(user)->UserCount--;
 532 }
 533
 534 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 535 {
 536         if (IS_LOCAL(user))
 537         {
 538                 // The nick TS is updated by the core, we don't do it
 539                 CmdBuilder params(user, "NICK");
 540                 params.push_back(user->nick);
 541                 params.push_back(ConvToStr(user->age));
 542                 params.Broadcast();
 543         }
 544         else if (!loopCall)
 545         {
 546                 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);
 547         }
 548 }
 549
 550 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 551 {
 552         if ((!IS_LOCAL(source)) && (source != ServerInstance->FakeClient))
 553                 return;
 554
 555         CmdBuilder params(source, "KICK");
 556         params.push_back(memb->chan->name);
 557         params.push_back(memb->user->uuid);
 558         // If a remote user is being kicked by us then send the membership id in the kick too
 559         if (!IS_LOCAL(memb->user))
 560                 params.push_int(memb->id);
 561         params.push_last(reason);
 562         params.Broadcast();
 563 }
 564
 565 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 566 {
 567         if (loopCall)
 568                 return; // Don't generate a REHASH here if we're in the middle of processing a message that generated this one
 569
 570         ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "OnPreRehash called with param %s", parameter.c_str());
 571
 572         // Send out to other servers
 573         if (!parameter.empty() && parameter[0] != '-')
 574         {
 575                 CmdBuilder params((user ? user->uuid : ServerInstance->Config->GetSID()), "REHASH");
 576                 params.push_back(parameter);
 577                 params.Forward(user ? TreeServer::Get(user)->GetRoute() : NULL);
 578         }
 579 }
 580
 581 void ModuleSpanningTree::ReadConfig(ConfigStatus& status)
 582 {
 583         // Did this rehash change the description of this server?
 584         const std::string& newdesc = ServerInstance->Config->ServerDesc;
 585         if (newdesc != Utils->TreeRoot->GetDesc())
 586         {
 587                 // Broadcast a SINFO desc message to let the network know about the new description. This is the description
 588                 // string that is sent in the SERVER message initially and shown for example in WHOIS.
 589                 // We don't need to update the field itself in the Server object - the core does that.
 590                 CommandSInfo::Builder(Utils->TreeRoot, "desc", newdesc).Broadcast();
 591         }
 592
 593         // Re-read config stuff
 594         try
 595         {
 596                 Utils->ReadConfiguration();
 597         }
 598         catch (ModuleException& e)
 599         {
 600                 // Refresh the IP cache anyway, so servers read before the error will be allowed to connect
 601                 Utils->RefreshIPCache();
 602                 // Always warn local opers with snomask +l, also warn globally (snomask +L) if the rehash was issued by a remote user
 603                 std::string msg = "Error in configuration: ";
 604                 msg.append(e.GetReason());
 605                 ServerInstance->SNO->WriteToSnoMask('l', msg);
 606                 if (status.srcuser && !IS_LOCAL(status.srcuser))
 607                         ServerInstance->PI->SendSNONotice('L', msg);
 608         }
 609 }
 610
 611 void ModuleSpanningTree::OnLoadModule(Module* mod)
 612 {
 613         std::string data;
 614         data.push_back('+');
 615         data.append(mod->ModuleSourceFile);
 616         Version v = mod->GetVersion();
 617         if (!v.link_data.empty())
 618         {
 619                 data.push_back('=');
 620                 data.append(v.link_data);
 621         }
 622         ServerInstance->PI->SendMetaData("modules", data);
 623 }
 624
 625 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 626 {
 627         if (!Utils)
 628                 return;
 629         ServerInstance->PI->SendMetaData("modules", "-" + mod->ModuleSourceFile);
 630
 631 restart:
 632         // Close all connections which use an IO hook provided by this module
 633         const TreeServer::ChildServers& list = Utils->TreeRoot->GetChildren();
 634         for (TreeServer::ChildServers::const_iterator i = list.begin(); i != list.end(); ++i)
 635         {
 636                 TreeSocket* sock = (*i)->GetSocket();
 637                 if (sock->GetIOHook() && sock->GetIOHook()->prov->creator == mod)
 638                 {
 639                         sock->SendError("SSL module unloaded");
 640                         sock->Close();
 641                         // XXX: The list we're iterating is modified by TreeServer::SQuit() which is called by Close()
 642                         goto restart;
 643                 }
 644         }
 645
 646         for (SpanningTreeUtilities::TimeoutList::const_iterator i = Utils->timeoutlist.begin(); i != Utils->timeoutlist.end(); ++i)
 647         {
 648                 TreeSocket* sock = i->first;
 649                 if (sock->GetIOHook() && sock->GetIOHook()->prov->creator == mod)
 650                         sock->Close();
 651         }
 652 }
 653
 654 // note: the protocol does not allow direct umode +o except
 655 // via NICK with 8 params. sending OPERTYPE infers +o modechange
 656 // locally.
 657 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 658 {
 659         if (user->registered != REG_ALL || !IS_LOCAL(user))
 660                 return;
 661         CommandOpertype::Builder(user).Broadcast();
 662 }
 663
 664 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 665 {
 666         if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
 667                 return;
 668
 669         if (!user)
 670                 user = ServerInstance->FakeClient;
 671
 672         CommandAddLine::Builder(x, user).Broadcast();
 673 }
 674
 675 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 676 {
 677         if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
 678                 return;
 679
 680         if (!user)
 681                 user = ServerInstance->FakeClient;
 682
 683         CmdBuilder params(user, "DELLINE");
 684         params.push_back(x->type);
 685         params.push_back(x->Displayable());
 686         params.Broadcast();
 687 }
 688
 689 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 690 {
 691         if (IS_LOCAL(user))
 692                 CommandAway::Builder(user, awaymsg).Broadcast();
 693
 694         return MOD_RES_PASSTHRU;
 695 }
 696
 697 void ModuleSpanningTree::OnMode(User* source, User* u, Channel* c, const Modes::ChangeList& modes, ModeParser::ModeProcessFlag processflags, const std::string& output_mode)
 698 {
 699         if (processflags & ModeParser::MODE_LOCALONLY)
 700                 return;
 701
 702         if (u)
 703         {
 704                 if (u->registered != REG_ALL)
 705                         return;
 706
 707                 CmdBuilder params(source, "MODE");
 708                 params.push(u->uuid);
 709                 params.push(output_mode);
 710                 params.push_raw(Translate::ModeChangeListToParams(modes.getlist()));
 711                 params.Broadcast();
 712         }
 713         else
 714         {
 715                 CmdBuilder params(source, "FMODE");
 716                 params.push(c->name);
 717                 params.push_int(c->age);
 718                 params.push(output_mode);
 719                 params.push_raw(Translate::ModeChangeListToParams(modes.getlist()));
 720                 params.Broadcast();
 721         }
 722 }
 723
 724 CullResult ModuleSpanningTree::cull()
 725 {
 726         if (Utils)
 727                 Utils->cull();
 728         return this->Module::cull();
 729 }
 730
 731 ModuleSpanningTree::~ModuleSpanningTree()
 732 {
 733         ServerInstance->PI = &ServerInstance->DefaultProtocolInterface;
 734
 735         Server* newsrv = new Server(ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
 736         SetLocalUsersServer(newsrv);
 737
 738         /* This will also free the listeners */
 739         delete Utils;
 740
 741         delete commands;
 742 }
 743
 744 Version ModuleSpanningTree::GetVersion()
 745 {
 746         return Version("Allows servers to be linked", VF_VENDOR);
 747 }
 748
 749 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 750  * so that any activity it sees is FINAL, e.g. we arent going to send out
 751  * a NICK message before m_cloaking has finished putting the +x on the user,
 752  * etc etc.
 753  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 754  * the module call queue.
 755  */
 756 void ModuleSpanningTree::Prioritize()
 757 {
 758         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
 759 }
 760
 761 MODULE_INIT(ModuleSpanningTree)