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 "protocolinterface.h"
  37
  38 ModuleSpanningTree::ModuleSpanningTree()
  39         : rconnect(this), rsquit(this), map(this)
  40         , commands(NULL), DNS(this, "DNS")
  41         , KeepNickTS(false)
  42 {
  43 }
  44
  45 SpanningTreeCommands::SpanningTreeCommands(ModuleSpanningTree* module)
  46         : svsjoin(module), svspart(module), svsnick(module), metadata(module),
  47         uid(module), opertype(module), fjoin(module), ijoin(module), resync(module),
  48         fmode(module), ftopic(module), fhost(module), fident(module), fname(module),
  49         away(module), addline(module), delline(module), encap(module), idle(module),
  50         nick(module), ping(module), pong(module), push(module), save(module),
  51         server(module), squit(module), snonotice(module), version(module),
  52         burst(module), endburst(module)
  53 {
  54 }
  55
  56 namespace
  57 {
  58         void SetLocalUsersServer(Server* newserver)
  59         {
  60                 ServerInstance->FakeClient->server = newserver;
  61                 const LocalUserList& list = ServerInstance->Users->local_users;
  62                 for (LocalUserList::const_iterator i = list.begin(); i != list.end(); ++i)
  63                         (*i)->server = newserver;
  64         }
  65 }
  66
  67 void ModuleSpanningTree::init()
  68 {
  69         ServerInstance->SNO->EnableSnomask('l', "LINK");
  70
  71         Utils = new SpanningTreeUtilities(this);
  72         Utils->TreeRoot = new TreeServer;
  73         commands = new SpanningTreeCommands(this);
  74
  75         delete ServerInstance->PI;
  76         ServerInstance->PI = new SpanningTreeProtocolInterface;
  77
  78         delete ServerInstance->FakeClient->server;
  79         SetLocalUsersServer(Utils->TreeRoot);
  80
  81         loopCall = false;
  82         SplitInProgress = false;
  83
  84         // update our local user count
  85         Utils->TreeRoot->UserCount = ServerInstance->Users->local_users.size();
  86 }
  87
  88 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
  89 {
  90         std::string Parent = Utils->TreeRoot->GetName();
  91         if (Current->GetParent())
  92         {
  93                 Parent = Current->GetParent()->GetName();
  94         }
  95
  96         const TreeServer::ChildServers& children = Current->GetChildren();
  97         for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i)
  98         {
  99                 TreeServer* server = *i;
 100                 if ((server->Hidden) || ((Utils->HideULines) && (server->IsULine())))
 101                 {
 102                         if (user->IsOper())
 103                         {
 104                                  ShowLinks(server, user, hops+1);
 105                         }
 106                 }
 107                 else
 108                 {
 109                         ShowLinks(server, user, hops+1);
 110                 }
 111         }
 112         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
 113         if ((Utils->HideULines) && (Current->IsULine()) && (!user->IsOper()))
 114                 return;
 115         /* Or if the server is hidden and they're not an oper */
 116         else if ((Current->Hidden) && (!user->IsOper()))
 117                 return;
 118
 119         user->WriteNumeric(RPL_LINKS, "%s %s :%d %s",   Current->GetName().c_str(),
 120                         (Utils->FlatLinks && (!user->IsOper())) ? ServerInstance->Config->ServerName.c_str() : Parent.c_str(),
 121                         (Utils->FlatLinks && (!user->IsOper())) ? 0 : hops,
 122                         Current->GetDesc().c_str());
 123 }
 124
 125 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 126 {
 127         ShowLinks(Utils->TreeRoot,user,0);
 128         user->WriteNumeric(RPL_ENDOFLINKS, "* :End of /LINKS list.");
 129 }
 130
 131 std::string ModuleSpanningTree::TimeToStr(time_t secs)
 132 {
 133         time_t mins_up = secs / 60;
 134         time_t hours_up = mins_up / 60;
 135         time_t days_up = hours_up / 24;
 136         secs = secs % 60;
 137         mins_up = mins_up % 60;
 138         hours_up = hours_up % 24;
 139         return ((days_up ? (ConvToStr(days_up) + "d") : "")
 140                         + (hours_up ? (ConvToStr(hours_up) + "h") : "")
 141                         + (mins_up ? (ConvToStr(mins_up) + "m") : "")
 142                         + ConvToStr(secs) + "s");
 143 }
 144
 145 void ModuleSpanningTree::DoPingChecks(time_t curtime)
 146 {
 147         /*
 148          * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
 149          * This prevents lost REMOTECONNECT notices
 150          */
 151         long ts = ServerInstance->Time() * 1000 + (ServerInstance->Time_ns() / 1000000);
 152
 153 restart:
 154         for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
 155         {
 156                 TreeServer *s = i->second;
 157
 158                 // Skip myself
 159                 if (s->IsRoot())
 160                         continue;
 161
 162                 if (s->GetSocket()->GetLinkState() == DYING)
 163                 {
 164                         s->GetSocket()->Close();
 165                         goto restart;
 166                 }
 167
 168                 // Do not ping servers that are not fully connected yet!
 169                 // Servers which are connected to us have IsLocal() == true and if they're fully connected
 170                 // then Socket->LinkState == CONNECTED. Servers that are linked to another server are always fully connected.
 171                 if (s->IsLocal() && s->GetSocket()->GetLinkState() != CONNECTED)
 172                         continue;
 173
 174                 // Now do PING checks on all servers
 175                 // Only ping if this server needs one
 176                 if (curtime >= s->NextPingTime())
 177                 {
 178                         // And if they answered the last
 179                         if (s->AnsweredLastPing())
 180                         {
 181                                 // They did, send a ping to them
 182                                 s->SetNextPingTime(curtime + Utils->PingFreq);
 183                                 s->GetSocket()->WriteLine(":" + ServerInstance->Config->GetSID() + " PING " + s->GetID());
 184                                 s->LastPingMsec = ts;
 185                         }
 186                         else
 187                         {
 188                                 // They didn't answer the last ping, if they are locally connected, get rid of them.
 189                                 if (s->IsLocal())
 190                                 {
 191                                         TreeSocket* sock = s->GetSocket();
 192                                         sock->SendError("Ping timeout");
 193                                         sock->Close();
 194                                         goto restart;
 195                                 }
 196                         }
 197                 }
 198
 199                 // If warn on ping enabled and not warned and the difference is sufficient and they didn't answer the last ping...
 200                 if ((Utils->PingWarnTime) && (!s->Warned) && (curtime >= s->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!s->AnsweredLastPing()))
 201                 {
 202                         /* The server hasnt responded, send a warning to opers */
 203                         ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", s->GetName().c_str(), Utils->PingWarnTime);
 204                         s->Warned = true;
 205                 }
 206         }
 207 }
 208
 209 void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
 210 {
 211         if (!a)
 212                 return;
 213         for(unsigned int j=0; j < a->servers.size(); j++)
 214         {
 215                 if (Utils->FindServer(a->servers[j]))
 216                 {
 217                         // found something in this block. Should the server fail,
 218                         // we want to start at the start of the list, not in the
 219                         // middle where we left off
 220                         a->position = -1;
 221                         return;
 222                 }
 223         }
 224         if (on_timer && a->position >= 0)
 225                 return;
 226         if (!on_timer && a->position < 0)
 227                 return;
 228
 229         a->position++;
 230         while (a->position < (int)a->servers.size())
 231         {
 232                 Link* x = Utils->FindLink(a->servers[a->position]);
 233                 if (x)
 234                 {
 235                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 236                         ConnectServer(x, a);
 237                         return;
 238                 }
 239                 a->position++;
 240         }
 241         // Autoconnect chain has been fully iterated; start at the beginning on the
 242         // next AutoConnectServers run
 243         a->position = -1;
 244 }
 245
 246 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 247 {
 248         bool ipvalid = true;
 249
 250         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
 251         {
 252                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 253                 return;
 254         }
 255
 256         DNS::QueryType start_type = DNS::QUERY_AAAA;
 257         if (strchr(x->IPAddr.c_str(),':'))
 258         {
 259                 in6_addr n;
 260                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 261                         ipvalid = false;
 262         }
 263         else
 264         {
 265                 in_addr n;
 266                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 267                         ipvalid = false;
 268         }
 269
 270         /* Do we already have an IP? If so, no need to resolve it. */
 271         if (ipvalid)
 272         {
 273                 /* Gave a hook, but it wasnt one we know */
 274                 TreeSocket* newsocket = new TreeSocket(x, y, x->IPAddr);
 275                 if (newsocket->GetFd() > -1)
 276                 {
 277                         /* Handled automatically on success */
 278                 }
 279                 else
 280                 {
 281                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
 282                                 x->Name.c_str(), newsocket->getError().c_str());
 283                         ServerInstance->GlobalCulls.AddItem(newsocket);
 284                 }
 285         }
 286         else if (!DNS)
 287         {
 288                 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());
 289         }
 290         else
 291         {
 292                 ServernameResolver* snr = new ServernameResolver(*DNS, x->IPAddr, x, start_type, y);
 293                 try
 294                 {
 295                         DNS->Process(snr);
 296                 }
 297                 catch (DNS::Exception& e)
 298                 {
 299                         delete snr;
 300                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason().c_str());
 301                         ConnectServer(y, false);
 302                 }
 303         }
 304 }
 305
 306 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 307 {
 308         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 309         {
 310                 Autoconnect* x = *i;
 311                 if (curtime >= x->NextConnectTime)
 312                 {
 313                         x->NextConnectTime = curtime + x->Period;
 314                         ConnectServer(x, true);
 315                 }
 316         }
 317 }
 318
 319 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 320 {
 321         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 322         while (i != Utils->timeoutlist.end())
 323         {
 324                 TreeSocket* s = i->first;
 325                 std::pair<std::string, int> p = i->second;
 326                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 327                 i++;
 328                 if (s->GetLinkState() == DYING)
 329                 {
 330                         Utils->timeoutlist.erase(me);
 331                         s->Close();
 332                 }
 333                 else if (curtime > s->age + p.second)
 334                 {
 335                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 336                         Utils->timeoutlist.erase(me);
 337                         s->Close();
 338                 }
 339         }
 340 }
 341
 342 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 343 {
 344         // we've already checked if pcnt > 0, so this is safe
 345         TreeServer* found = Utils->FindServerMask(parameters[0]);
 346         if (found)
 347         {
 348                 if (found == Utils->TreeRoot)
 349                 {
 350                         // Pass to default VERSION handler.
 351                         return MOD_RES_PASSTHRU;
 352                 }
 353                 std::string Version = found->GetVersion();
 354                 user->WriteNumeric(RPL_VERSION, ":%s", Version.c_str());
 355         }
 356         else
 357         {
 358                 user->WriteNumeric(ERR_NOSUCHSERVER, "%s :No such server", parameters[0].c_str());
 359         }
 360         return MOD_RES_DENY;
 361 }
 362
 363 /* This method will attempt to get a message to a remote user.
 364  */
 365 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 366 {
 367         std::string text;
 368         VAFORMAT(text, format, format);
 369
 370         if (IS_LOCAL(user))
 371                 user->WriteNotice(text);
 372         else
 373                 ServerInstance->PI->SendUserNotice(user, text);
 374 }
 375
 376 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 377 {
 378         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 379         {
 380                 Link* x = *i;
 381                 if (InspIRCd::Match(x->Name.c_str(),parameters[0], rfc_case_insensitive_map))
 382                 {
 383                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
 384                         {
 385                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 386                                 return MOD_RES_DENY;
 387                         }
 388
 389                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 390                         if (!CheckDupe)
 391                         {
 392                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 393                                 ConnectServer(x);
 394                                 return MOD_RES_DENY;
 395                         }
 396                         else
 397                         {
 398                                 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());
 399                                 return MOD_RES_DENY;
 400                         }
 401                 }
 402         }
 403         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 404         return MOD_RES_DENY;
 405 }
 406
 407 void ModuleSpanningTree::On005Numeric(std::map<std::string, std::string>& tokens)
 408 {
 409         tokens["MAP"];
 410 }
 411
 412 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
 413 {
 414         if (IS_LOCAL(source))
 415         {
 416                 CmdBuilder params(source, "INVITE");
 417                 params.push_back(dest->uuid);
 418                 params.push_back(channel->name);
 419                 params.push_back(ConvToStr(expiry));
 420                 params.Broadcast();
 421         }
 422 }
 423
 424 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 425 {
 426         // Drop remote events on the floor.
 427         if (!IS_LOCAL(user))
 428                 return;
 429
 430         CommandFTopic::Builder(user, chan).Broadcast();
 431 }
 432
 433 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string& text, char status, const CUList& exempt_list, MessageType msgtype)
 434 {
 435         if (!IS_LOCAL(user))
 436                 return;
 437
 438         const char* message_type = (msgtype == MSG_PRIVMSG ? "PRIVMSG" : "NOTICE");
 439         if (target_type == TYPE_USER)
 440         {
 441                 User* d = (User*) dest;
 442                 if (!IS_LOCAL(d))
 443                 {
 444                         CmdBuilder params(user, message_type);
 445                         params.push_back(d->uuid);
 446                         params.push_last(text);
 447                         params.Unicast(d);
 448                 }
 449         }
 450         else if (target_type == TYPE_CHANNEL)
 451         {
 452                 Utils->SendChannelMessage(user->uuid, (Channel*)dest, text, status, exempt_list, message_type);
 453         }
 454         else if (target_type == TYPE_SERVER)
 455         {
 456                 char* target = (char*) dest;
 457                 CmdBuilder par(user, message_type);
 458                 par.push_back(target);
 459                 par.push_last(text);
 460                 par.Broadcast();
 461         }
 462 }
 463
 464 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 465 {
 466         AutoConnectServers(curtime);
 467         DoPingChecks(curtime);
 468         DoConnectTimeout(curtime);
 469 }
 470
 471 void ModuleSpanningTree::OnUserConnect(LocalUser* user)
 472 {
 473         if (user->quitting)
 474                 return;
 475
 476         CommandUID::Builder(user).Broadcast();
 477
 478         if (user->IsOper())
 479                 CommandOpertype::Builder(user).Broadcast();
 480
 481         for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
 482         {
 483                 ExtensionItem* item = i->first;
 484                 std::string value = item->serialize(FORMAT_NETWORK, user, i->second);
 485                 if (!value.empty())
 486                         ServerInstance->PI->SendMetaData(user, item->name, value);
 487         }
 488
 489         Utils->TreeRoot->UserCount++;
 490 }
 491
 492 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created_by_local, CUList& excepts)
 493 {
 494         // Only do this for local users
 495         if (!IS_LOCAL(memb->user))
 496                 return;
 497
 498         if (created_by_local)
 499         {
 500                 CmdBuilder params("FJOIN");
 501                 params.push_back(memb->chan->name);
 502                 params.push_back(ConvToStr(memb->chan->age));
 503                 params.push_raw(" +").push_raw(memb->chan->ChanModes(true));
 504                 params.push(memb->modes).push_raw(',').push_raw(memb->user->uuid);
 505                 params.Broadcast();
 506         }
 507         else
 508         {
 509                 CmdBuilder params(memb->user, "IJOIN");
 510                 params.push_back(memb->chan->name);
 511                 if (!memb->modes.empty())
 512                 {
 513                         params.push_back(ConvToStr(memb->chan->age));
 514                         params.push_back(memb->modes);
 515                 }
 516                 params.Broadcast();
 517         }
 518 }
 519
 520 void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
 521 {
 522         if (user->registered != REG_ALL || !IS_LOCAL(user))
 523                 return;
 524
 525         CmdBuilder(user, "FHOST").push(newhost).Broadcast();
 526 }
 527
 528 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 529 {
 530         if (user->registered != REG_ALL || !IS_LOCAL(user))
 531                 return;
 532
 533         CmdBuilder(user, "FNAME").push_last(gecos).Broadcast();
 534 }
 535
 536 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 537 {
 538         if ((user->registered != REG_ALL) || (!IS_LOCAL(user)))
 539                 return;
 540
 541         CmdBuilder(user, "FIDENT").push(ident).Broadcast();
 542 }
 543
 544 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 545 {
 546         if (IS_LOCAL(memb->user))
 547         {
 548                 CmdBuilder params(memb->user, "PART");
 549                 params.push_back(memb->chan->name);
 550                 if (!partmessage.empty())
 551                         params.push_last(partmessage);
 552                 params.Broadcast();
 553         }
 554 }
 555
 556 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 557 {
 558         if (IS_LOCAL(user))
 559         {
 560                 if (oper_message != reason)
 561                         ServerInstance->PI->SendMetaData(user, "operquit", oper_message);
 562
 563                 CmdBuilder(user, "QUIT").push_last(reason).Broadcast();
 564         }
 565         else
 566         {
 567                 // Hide the message if one of the following is true:
 568                 // - User is being quit due to a netsplit and quietbursts is on
 569                 // - Server is a silent uline
 570                 bool hide = (((this->SplitInProgress) && (Utils->quiet_bursts)) || (user->server->IsSilentULine()));
 571                 if (!hide)
 572                 {
 573                         ServerInstance->SNO->WriteToSnoMask('Q', "Client exiting on server %s: %s (%s) [%s]",
 574                                 user->server->GetName().c_str(), user->GetFullRealHost().c_str(), user->GetIPString().c_str(), oper_message.c_str());
 575                 }
 576         }
 577
 578         // Regardless, We need to modify the user Counts..
 579         TreeServer::Get(user)->UserCount--;
 580 }
 581
 582 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 583 {
 584         if (IS_LOCAL(user))
 585         {
 586                 CmdBuilder params(user, "NICK");
 587                 params.push_back(user->nick);
 588
 589                 /** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
 590                  */
 591                 if ((irc::string(user->nick.c_str()) != assign(oldnick)) && (!this->KeepNickTS))
 592                         user->age = ServerInstance->Time();
 593
 594                 params.push_back(ConvToStr(user->age));
 595                 params.Broadcast();
 596                 this->KeepNickTS = false;
 597         }
 598         else if (!loopCall && user->nick == user->uuid)
 599         {
 600                 CmdBuilder params("SAVE");
 601                 params.push_back(user->uuid);
 602                 params.push_back(ConvToStr(user->age));
 603                 params.Broadcast();
 604         }
 605 }
 606
 607 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 608 {
 609         if ((!IS_LOCAL(source)) && (source != ServerInstance->FakeClient))
 610                 return;
 611
 612         CmdBuilder params(source, "KICK");
 613         params.push_back(memb->chan->name);
 614         params.push_back(memb->user->uuid);
 615         params.push_last(reason);
 616         params.Broadcast();
 617 }
 618
 619 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 620 {
 621         if (loopCall)
 622                 return; // Don't generate a REHASH here if we're in the middle of processing a message that generated this one
 623
 624         ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "OnPreRehash called with param %s", parameter.c_str());
 625
 626         // Send out to other servers
 627         if (!parameter.empty() && parameter[0] != '-')
 628         {
 629                 CmdBuilder params((user ? user->uuid : ServerInstance->Config->GetSID()), "REHASH");
 630                 params.push_back(parameter);
 631                 params.Forward(user ? TreeServer::Get(user)->GetRoute() : NULL);
 632         }
 633 }
 634
 635 void ModuleSpanningTree::ReadConfig(ConfigStatus& status)
 636 {
 637         // Re-read config stuff
 638         try
 639         {
 640                 Utils->ReadConfiguration();
 641         }
 642         catch (ModuleException& e)
 643         {
 644                 // Refresh the IP cache anyway, so servers read before the error will be allowed to connect
 645                 Utils->RefreshIPCache();
 646                 // Always warn local opers with snomask +l, also warn globally (snomask +L) if the rehash was issued by a remote user
 647                 std::string msg = "Error in configuration: ";
 648                 msg.append(e.GetReason());
 649                 ServerInstance->SNO->WriteToSnoMask('l', msg);
 650                 if (status.srcuser && !IS_LOCAL(status.srcuser))
 651                         ServerInstance->PI->SendSNONotice('L', msg);
 652         }
 653 }
 654
 655 void ModuleSpanningTree::OnLoadModule(Module* mod)
 656 {
 657         std::string data;
 658         data.push_back('+');
 659         data.append(mod->ModuleSourceFile);
 660         Version v = mod->GetVersion();
 661         if (!v.link_data.empty())
 662         {
 663                 data.push_back('=');
 664                 data.append(v.link_data);
 665         }
 666         ServerInstance->PI->SendMetaData("modules", data);
 667 }
 668
 669 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 670 {
 671         if (!Utils)
 672                 return;
 673         ServerInstance->PI->SendMetaData("modules", "-" + mod->ModuleSourceFile);
 674
 675         // Close all connections which use an IO hook provided by this module
 676         const TreeServer::ChildServers& list = Utils->TreeRoot->GetChildren();
 677         for (TreeServer::ChildServers::const_iterator i = list.begin(); i != list.end(); ++i)
 678         {
 679                 TreeSocket* sock = (*i)->GetSocket();
 680                 if (sock && sock->GetIOHook() && sock->GetIOHook()->creator == mod)
 681                 {
 682                         sock->SendError("SSL module unloaded");
 683                         sock->Close();
 684                 }
 685         }
 686
 687         for (SpanningTreeUtilities::TimeoutList::const_iterator i = Utils->timeoutlist.begin(); i != Utils->timeoutlist.end(); ++i)
 688         {
 689                 TreeSocket* sock = i->first;
 690                 if (sock->GetIOHook() && sock->GetIOHook()->creator == mod)
 691                         sock->Close();
 692         }
 693 }
 694
 695 // note: the protocol does not allow direct umode +o except
 696 // via NICK with 8 params. sending OPERTYPE infers +o modechange
 697 // locally.
 698 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 699 {
 700         if (user->registered != REG_ALL || !IS_LOCAL(user))
 701                 return;
 702         CommandOpertype::Builder(user).Broadcast();
 703 }
 704
 705 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 706 {
 707         if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
 708                 return;
 709
 710         if (!user)
 711                 user = ServerInstance->FakeClient;
 712
 713         CommandAddLine::Builder(x, user).Broadcast();
 714 }
 715
 716 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 717 {
 718         if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
 719                 return;
 720
 721         if (!user)
 722                 user = ServerInstance->FakeClient;
 723
 724         CmdBuilder params(user, "DELLINE");
 725         params.push_back(x->type);
 726         params.push_back(x->Displayable());
 727         params.Broadcast();
 728 }
 729
 730 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 731 {
 732         if (IS_LOCAL(user))
 733                 CommandAway::Builder(user, awaymsg).Broadcast();
 734
 735         return MOD_RES_PASSTHRU;
 736 }
 737
 738 CullResult ModuleSpanningTree::cull()
 739 {
 740         if (Utils)
 741                 Utils->cull();
 742         return this->Module::cull();
 743 }
 744
 745 ModuleSpanningTree::~ModuleSpanningTree()
 746 {
 747         delete ServerInstance->PI;
 748         ServerInstance->PI = new ProtocolInterface;
 749
 750         Server* newsrv = new Server(ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
 751         SetLocalUsersServer(newsrv);
 752
 753         /* This will also free the listeners */
 754         delete Utils;
 755
 756         delete commands;
 757 }
 758
 759 Version ModuleSpanningTree::GetVersion()
 760 {
 761         return Version("Allows servers to be linked", VF_VENDOR);
 762 }
 763
 764 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 765  * so that any activity it sees is FINAL, e.g. we arent going to send out
 766  * a NICK message before m_cloaking has finished putting the +x on the user,
 767  * etc etc.
 768  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 769  * the module call queue.
 770  */
 771 void ModuleSpanningTree::Prioritize()
 772 {
 773         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
 774 }
 775
 776 MODULE_INIT(ModuleSpanningTree)