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         : commands(NULL), DNS(this, "DNS")
  40 {
  41 }
  42
  43 SpanningTreeCommands::SpanningTreeCommands(ModuleSpanningTree* module)
  44         : rconnect(module), rsquit(module),
  45         svsjoin(module), svspart(module), svsnick(module), metadata(module),
  46         uid(module), opertype(module), fjoin(module), ijoin(module), resync(module),
  47         fmode(module), ftopic(module), fhost(module), fident(module), fname(module)
  48 {
  49 }
  50
  51 void ModuleSpanningTree::init()
  52 {
  53         ServerInstance->SNO->EnableSnomask('l', "LINK");
  54
  55         Utils = new SpanningTreeUtilities(this);
  56         Utils->TreeRoot = new TreeServer;
  57         commands = new SpanningTreeCommands(this);
  58         ServerInstance->Modules->AddService(commands->rconnect);
  59         ServerInstance->Modules->AddService(commands->rsquit);
  60         ServerInstance->Modules->AddService(commands->svsjoin);
  61         ServerInstance->Modules->AddService(commands->svspart);
  62         ServerInstance->Modules->AddService(commands->svsnick);
  63         ServerInstance->Modules->AddService(commands->metadata);
  64         ServerInstance->Modules->AddService(commands->uid);
  65         ServerInstance->Modules->AddService(commands->opertype);
  66         ServerInstance->Modules->AddService(commands->fjoin);
  67         ServerInstance->Modules->AddService(commands->ijoin);
  68         ServerInstance->Modules->AddService(commands->resync);
  69         ServerInstance->Modules->AddService(commands->fmode);
  70         ServerInstance->Modules->AddService(commands->ftopic);
  71         ServerInstance->Modules->AddService(commands->fhost);
  72         ServerInstance->Modules->AddService(commands->fident);
  73         ServerInstance->Modules->AddService(commands->fname);
  74
  75         delete ServerInstance->PI;
  76         ServerInstance->PI = new SpanningTreeProtocolInterface(Utils);
  77         loopCall = false;
  78
  79         // update our local user count
  80         Utils->TreeRoot->UserCount = ServerInstance->Users->local_users.size();
  81 }
  82
  83 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
  84 {
  85         std::string Parent = Utils->TreeRoot->GetName();
  86         if (Current->GetParent())
  87         {
  88                 Parent = Current->GetParent()->GetName();
  89         }
  90         for (unsigned int q = 0; q < Current->ChildCount(); q++)
  91         {
  92                 if ((Current->GetChild(q)->Hidden) || ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName()))))
  93                 {
  94                         if (user->IsOper())
  95                         {
  96                                  ShowLinks(Current->GetChild(q),user,hops+1);
  97                         }
  98                 }
  99                 else
 100                 {
 101                         ShowLinks(Current->GetChild(q),user,hops+1);
 102                 }
 103         }
 104         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
 105         if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName())) && (!user->IsOper()))
 106                 return;
 107         /* Or if the server is hidden and they're not an oper */
 108         else if ((Current->Hidden) && (!user->IsOper()))
 109                 return;
 110
 111         user->WriteNumeric(364, "%s %s %s :%d %s",      user->nick.c_str(), Current->GetName().c_str(),
 112                         (Utils->FlatLinks && (!user->IsOper())) ? ServerInstance->Config->ServerName.c_str() : Parent.c_str(),
 113                         (Utils->FlatLinks && (!user->IsOper())) ? 0 : hops,
 114                         Current->GetDesc().c_str());
 115 }
 116
 117 int ModuleSpanningTree::CountServs()
 118 {
 119         return Utils->serverlist.size();
 120 }
 121
 122 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 123 {
 124         ShowLinks(Utils->TreeRoot,user,0);
 125         user->WriteNumeric(365, "%s * :End of /LINKS list.",user->nick.c_str());
 126         return;
 127 }
 128
 129 std::string ModuleSpanningTree::TimeToStr(time_t secs)
 130 {
 131         time_t mins_up = secs / 60;
 132         time_t hours_up = mins_up / 60;
 133         time_t days_up = hours_up / 24;
 134         secs = secs % 60;
 135         mins_up = mins_up % 60;
 136         hours_up = hours_up % 24;
 137         return ((days_up ? (ConvToStr(days_up) + "d") : "")
 138                         + (hours_up ? (ConvToStr(hours_up) + "h") : "")
 139                         + (mins_up ? (ConvToStr(mins_up) + "m") : "")
 140                         + ConvToStr(secs) + "s");
 141 }
 142
 143 void ModuleSpanningTree::DoPingChecks(time_t curtime)
 144 {
 145         /*
 146          * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
 147          * This prevents lost REMOTECONNECT notices
 148          */
 149         long ts = ServerInstance->Time() * 1000 + (ServerInstance->Time_ns() / 1000000);
 150
 151 restart:
 152         for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
 153         {
 154                 TreeServer *s = i->second;
 155
 156                 if (s->GetSocket() && s->GetSocket()->GetLinkState() == DYING)
 157                 {
 158                         s->GetSocket()->Close();
 159                         goto restart;
 160                 }
 161
 162                 // Fix for bug #792, do not ping servers that are not connected yet!
 163                 // Remote servers have Socket == NULL and local connected servers have
 164                 // Socket->LinkState == CONNECTED
 165                 if (s->GetSocket() && s->GetSocket()->GetLinkState() != CONNECTED)
 166                         continue;
 167
 168                 // Now do PING checks on all servers
 169                 TreeServer *mts = Utils->BestRouteTo(s->GetID());
 170
 171                 if (mts)
 172                 {
 173                         // Only ping if this server needs one
 174                         if (curtime >= s->NextPingTime())
 175                         {
 176                                 // And if they answered the last
 177                                 if (s->AnsweredLastPing())
 178                                 {
 179                                         // They did, send a ping to them
 180                                         s->SetNextPingTime(curtime + Utils->PingFreq);
 181                                         TreeSocket *tsock = mts->GetSocket();
 182
 183                                         // ... if we can find a proper route to them
 184                                         if (tsock)
 185                                         {
 186                                                 tsock->WriteLine(":" + ServerInstance->Config->GetSID() + " PING " + s->GetID());
 187                                                 s->LastPingMsec = ts;
 188                                         }
 189                                 }
 190                                 else
 191                                 {
 192                                         // They didn't answer the last ping, if they are locally connected, get rid of them.
 193                                         TreeSocket *sock = s->GetSocket();
 194                                         if (sock)
 195                                         {
 196                                                 sock->SendError("Ping timeout");
 197                                                 sock->Close();
 198                                                 goto restart;
 199                                         }
 200                                 }
 201                         }
 202
 203                         // If warn on ping enabled and not warned and the difference is sufficient and they didn't answer the last ping...
 204                         if ((Utils->PingWarnTime) && (!s->Warned) && (curtime >= s->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!s->AnsweredLastPing()))
 205                         {
 206                                 /* The server hasnt responded, send a warning to opers */
 207                                 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", s->GetName().c_str(), Utils->PingWarnTime);
 208                                 s->Warned = true;
 209                         }
 210                 }
 211         }
 212 }
 213
 214 void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
 215 {
 216         if (!a)
 217                 return;
 218         for(unsigned int j=0; j < a->servers.size(); j++)
 219         {
 220                 if (Utils->FindServer(a->servers[j]))
 221                 {
 222                         // found something in this block. Should the server fail,
 223                         // we want to start at the start of the list, not in the
 224                         // middle where we left off
 225                         a->position = -1;
 226                         return;
 227                 }
 228         }
 229         if (on_timer && a->position >= 0)
 230                 return;
 231         if (!on_timer && a->position < 0)
 232                 return;
 233
 234         a->position++;
 235         while (a->position < (int)a->servers.size())
 236         {
 237                 Link* x = Utils->FindLink(a->servers[a->position]);
 238                 if (x)
 239                 {
 240                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 241                         ConnectServer(x, a);
 242                         return;
 243                 }
 244                 a->position++;
 245         }
 246         // Autoconnect chain has been fully iterated; start at the beginning on the
 247         // next AutoConnectServers run
 248         a->position = -1;
 249 }
 250
 251 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 252 {
 253         bool ipvalid = true;
 254
 255         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 256         {
 257                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 258                 return;
 259         }
 260
 261         DNS::QueryType start_type = DNS::QUERY_AAAA;
 262         if (strchr(x->IPAddr.c_str(),':'))
 263         {
 264                 in6_addr n;
 265                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 266                         ipvalid = false;
 267         }
 268         else
 269         {
 270                 in_addr n;
 271                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 272                         ipvalid = false;
 273         }
 274
 275         /* Do we already have an IP? If so, no need to resolve it. */
 276         if (ipvalid)
 277         {
 278                 /* Gave a hook, but it wasnt one we know */
 279                 TreeSocket* newsocket = new TreeSocket(x, y, x->IPAddr);
 280                 if (newsocket->GetFd() > -1)
 281                 {
 282                         /* Handled automatically on success */
 283                 }
 284                 else
 285                 {
 286                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
 287                                 x->Name.c_str(), newsocket->getError().c_str());
 288                         ServerInstance->GlobalCulls.AddItem(newsocket);
 289                 }
 290         }
 291         else if (!DNS)
 292         {
 293                 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());
 294         }
 295         else
 296         {
 297                 ServernameResolver* snr = new ServernameResolver(*DNS, x->IPAddr, x, start_type, y);
 298                 try
 299                 {
 300                         DNS->Process(snr);
 301                 }
 302                 catch (DNS::Exception& e)
 303                 {
 304                         delete snr;
 305                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason());
 306                         ConnectServer(y, false);
 307                 }
 308         }
 309 }
 310
 311 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 312 {
 313         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 314         {
 315                 Autoconnect* x = *i;
 316                 if (curtime >= x->NextConnectTime)
 317                 {
 318                         x->NextConnectTime = curtime + x->Period;
 319                         ConnectServer(x, true);
 320                 }
 321         }
 322 }
 323
 324 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 325 {
 326         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 327         while (i != Utils->timeoutlist.end())
 328         {
 329                 TreeSocket* s = i->first;
 330                 std::pair<std::string, int> p = i->second;
 331                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 332                 i++;
 333                 if (s->GetLinkState() == DYING)
 334                 {
 335                         Utils->timeoutlist.erase(me);
 336                         s->Close();
 337                 }
 338                 else if (curtime > s->age + p.second)
 339                 {
 340                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 341                         Utils->timeoutlist.erase(me);
 342                         s->Close();
 343                 }
 344         }
 345 }
 346
 347 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 348 {
 349         // we've already checked if pcnt > 0, so this is safe
 350         TreeServer* found = Utils->FindServerMask(parameters[0]);
 351         if (found)
 352         {
 353                 if (found == Utils->TreeRoot)
 354                 {
 355                         // Pass to default VERSION handler.
 356                         return MOD_RES_PASSTHRU;
 357                 }
 358                 std::string Version = found->GetVersion();
 359                 user->WriteNumeric(351, "%s :%s",user->nick.c_str(),Version.c_str());
 360         }
 361         else
 362         {
 363                 user->WriteNumeric(402, "%s %s :No such server",user->nick.c_str(),parameters[0].c_str());
 364         }
 365         return MOD_RES_DENY;
 366 }
 367
 368 /* This method will attempt to get a message to a remote user.
 369  */
 370 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 371 {
 372         std::string text;
 373         VAFORMAT(text, format, format);
 374
 375         if (IS_LOCAL(user))
 376                 user->WriteNotice(text);
 377         else
 378                 ServerInstance->PI->SendUserNotice(user, text);
 379 }
 380
 381 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 382 {
 383         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 384         {
 385                 Link* x = *i;
 386                 if (InspIRCd::Match(x->Name.c_str(),parameters[0]))
 387                 {
 388                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 389                         {
 390                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 391                                 return MOD_RES_DENY;
 392                         }
 393
 394                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 395                         if (!CheckDupe)
 396                         {
 397                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 398                                 ConnectServer(x);
 399                                 return MOD_RES_DENY;
 400                         }
 401                         else
 402                         {
 403                                 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());
 404                                 return MOD_RES_DENY;
 405                         }
 406                 }
 407         }
 408         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 409         return MOD_RES_DENY;
 410 }
 411
 412 void ModuleSpanningTree::OnGetServerDescription(const std::string &servername,std::string &description)
 413 {
 414         TreeServer* s = Utils->FindServer(servername);
 415         if (s)
 416         {
 417                 description = s->GetDesc();
 418         }
 419 }
 420
 421 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
 422 {
 423         if (IS_LOCAL(source))
 424         {
 425                 parameterlist params;
 426                 params.push_back(dest->uuid);
 427                 params.push_back(channel->name);
 428                 params.push_back(ConvToStr(expiry));
 429                 Utils->DoOneToMany(source->uuid,"INVITE",params);
 430         }
 431 }
 432
 433 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 434 {
 435         // Drop remote events on the floor.
 436         if (!IS_LOCAL(user))
 437                 return;
 438
 439         parameterlist params;
 440         params.push_back(chan->name);
 441         params.push_back(":"+topic);
 442         Utils->DoOneToMany(user->uuid,"TOPIC",params);
 443 }
 444
 445 void ModuleSpanningTree::LocalMessage(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list, const char* message_type)
 446 {
 447         /* Server or remote origin, dest should always be non-null */
 448         if ((!user) || (!IS_LOCAL(user)) || (!dest))
 449                 return;
 450
 451         if (target_type == TYPE_USER)
 452         {
 453                 User* d = (User*) dest;
 454                 if (!IS_LOCAL(d))
 455                 {
 456                         parameterlist params;
 457                         params.push_back(d->uuid);
 458                         params.push_back(":"+text);
 459                         Utils->DoOneToOne(user->uuid, message_type, params, d->server);
 460                 }
 461         }
 462         else if (target_type == TYPE_CHANNEL)
 463         {
 464                 Utils->SendChannelMessage(user->uuid, (Channel*)dest, text, status, exempt_list, message_type);
 465         }
 466         else if (target_type == TYPE_SERVER)
 467         {
 468                 char* target = (char*) dest;
 469                 parameterlist par;
 470                 par.push_back(target);
 471                 par.push_back(":"+text);
 472                 Utils->DoOneToMany(user->uuid, message_type, par);
 473         }
 474 }
 475
 476 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string& text, char status, const CUList& exempt_list, MessageType msgtype)
 477 {
 478         LocalMessage(user, dest, target_type, text, status, exempt_list, (msgtype == MSG_PRIVMSG ? "PRIVMSG" : "NOTICE"));
 479 }
 480
 481 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 482 {
 483         AutoConnectServers(curtime);
 484         DoPingChecks(curtime);
 485         DoConnectTimeout(curtime);
 486 }
 487
 488 void ModuleSpanningTree::OnUserConnect(LocalUser* user)
 489 {
 490         if (user->quitting)
 491                 return;
 492
 493         parameterlist params;
 494         params.push_back(user->uuid);
 495         params.push_back(ConvToStr(user->age));
 496         params.push_back(user->nick);
 497         params.push_back(user->host);
 498         params.push_back(user->dhost);
 499         params.push_back(user->ident);
 500         params.push_back(user->GetIPString());
 501         params.push_back(ConvToStr(user->signon));
 502         params.push_back("+"+std::string(user->FormatModes(true)));
 503         params.push_back(":"+user->fullname);
 504         Utils->DoOneToMany(ServerInstance->Config->GetSID(), "UID", params);
 505
 506         if (user->IsOper())
 507         {
 508                 params.clear();
 509                 params.push_back(":");
 510                 params[0].append(user->oper->name);
 511                 Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
 512         }
 513
 514         for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
 515         {
 516                 ExtensionItem* item = i->first;
 517                 std::string value = item->serialize(FORMAT_NETWORK, user, i->second);
 518                 if (!value.empty())
 519                         ServerInstance->PI->SendMetaData(user, item->name, value);
 520         }
 521
 522         Utils->TreeRoot->UserCount++;
 523 }
 524
 525 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created_by_local, CUList& excepts)
 526 {
 527         // Only do this for local users
 528         if (IS_LOCAL(memb->user))
 529         {
 530                 parameterlist params;
 531                 params.push_back(memb->chan->name);
 532                 if (created_by_local)
 533                 {
 534                         params.push_back(ConvToStr(memb->chan->age));
 535                         params.push_back(std::string("+") + memb->chan->ChanModes(true));
 536                         params.push_back(memb->modes+","+memb->user->uuid);
 537                         Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
 538                 }
 539                 else
 540                 {
 541                         if (!memb->modes.empty())
 542                         {
 543                                 params.push_back(ConvToStr(memb->chan->age));
 544                                 params.push_back(memb->modes);
 545                         }
 546                         Utils->DoOneToMany(memb->user->uuid, "IJOIN", params);
 547                 }
 548         }
 549 }
 550
 551 void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
 552 {
 553         if (user->registered != REG_ALL || !IS_LOCAL(user))
 554                 return;
 555
 556         parameterlist params;
 557         params.push_back(newhost);
 558         Utils->DoOneToMany(user->uuid,"FHOST",params);
 559 }
 560
 561 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 562 {
 563         if (user->registered != REG_ALL || !IS_LOCAL(user))
 564                 return;
 565
 566         parameterlist params;
 567         params.push_back(gecos);
 568         Utils->DoOneToMany(user->uuid,"FNAME",params);
 569 }
 570
 571 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 572 {
 573         if ((user->registered != REG_ALL) || (!IS_LOCAL(user)))
 574                 return;
 575
 576         parameterlist params;
 577         params.push_back(ident);
 578         Utils->DoOneToMany(user->uuid,"FIDENT",params);
 579 }
 580
 581 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 582 {
 583         if (IS_LOCAL(memb->user))
 584         {
 585                 parameterlist params;
 586                 params.push_back(memb->chan->name);
 587                 if (!partmessage.empty())
 588                         params.push_back(":"+partmessage);
 589                 Utils->DoOneToMany(memb->user->uuid,"PART",params);
 590         }
 591 }
 592
 593 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 594 {
 595         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 596         {
 597                 parameterlist params;
 598
 599                 if (oper_message != reason)
 600                 {
 601                         params.push_back(":"+oper_message);
 602                         Utils->DoOneToMany(user->uuid,"OPERQUIT",params);
 603                 }
 604                 params.clear();
 605                 params.push_back(":"+reason);
 606                 Utils->DoOneToMany(user->uuid,"QUIT",params);
 607         }
 608
 609         // Regardless, We need to modify the user Counts..
 610         TreeServer* SourceServer = Utils->FindServer(user->server);
 611         if (SourceServer)
 612         {
 613                 SourceServer->UserCount--;
 614         }
 615 }
 616
 617 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 618 {
 619         if (IS_LOCAL(user))
 620         {
 621                 parameterlist params;
 622                 params.push_back(user->nick);
 623
 624                 /** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
 625                  */
 626                 if (irc::string(user->nick.c_str()) != assign(oldnick))
 627                         user->age = ServerInstance->Time();
 628
 629                 params.push_back(ConvToStr(user->age));
 630                 Utils->DoOneToMany(user->uuid,"NICK",params);
 631         }
 632         else if (!loopCall && user->nick == user->uuid)
 633         {
 634                 parameterlist params;
 635                 params.push_back(user->uuid);
 636                 params.push_back(ConvToStr(user->age));
 637                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"SAVE",params);
 638         }
 639 }
 640
 641 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 642 {
 643         parameterlist params;
 644         params.push_back(memb->chan->name);
 645         params.push_back(memb->user->uuid);
 646         params.push_back(":"+reason);
 647         if (IS_LOCAL(source))
 648         {
 649                 Utils->DoOneToMany(source->uuid,"KICK",params);
 650         }
 651         else if (source == ServerInstance->FakeClient)
 652         {
 653                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"KICK",params);
 654         }
 655 }
 656
 657 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 658 {
 659         if (loopCall)
 660                 return; // Don't generate a REHASH here if we're in the middle of processing a message that generated this one
 661
 662         ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "OnPreRehash called with param %s", parameter.c_str());
 663
 664         // Send out to other servers
 665         if (!parameter.empty() && parameter[0] != '-')
 666         {
 667                 parameterlist params;
 668                 params.push_back(parameter);
 669                 Utils->DoOneToAllButSender(user ? user->uuid : ServerInstance->Config->GetSID(), "REHASH", params, user ? user->server : ServerInstance->Config->ServerName);
 670         }
 671 }
 672
 673 void ModuleSpanningTree::OnRehash(User* user)
 674 {
 675         // Re-read config stuff
 676         try
 677         {
 678                 Utils->ReadConfiguration();
 679         }
 680         catch (ModuleException& e)
 681         {
 682                 // Refresh the IP cache anyway, so servers read before the error will be allowed to connect
 683                 Utils->RefreshIPCache();
 684                 // Always warn local opers with snomask +l, also warn globally (snomask +L) if the rehash was issued by a remote user
 685                 std::string msg = "Error in configuration: ";
 686                 msg.append(e.GetReason());
 687                 ServerInstance->SNO->WriteToSnoMask('l', msg);
 688                 if (user && !IS_LOCAL(user))
 689                         ServerInstance->PI->SendSNONotice("L", msg);
 690         }
 691 }
 692
 693 void ModuleSpanningTree::OnLoadModule(Module* mod)
 694 {
 695         std::string data;
 696         data.push_back('+');
 697         data.append(mod->ModuleSourceFile);
 698         Version v = mod->GetVersion();
 699         if (!v.link_data.empty())
 700         {
 701                 data.push_back('=');
 702                 data.append(v.link_data);
 703         }
 704         ServerInstance->PI->SendMetaData(NULL, "modules", data);
 705 }
 706
 707 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 708 {
 709         ServerInstance->PI->SendMetaData(NULL, "modules", "-" + mod->ModuleSourceFile);
 710
 711         unsigned int items = Utils->TreeRoot->ChildCount();
 712         for(unsigned int x = 0; x < items; x++)
 713         {
 714                 TreeServer* srv = Utils->TreeRoot->GetChild(x);
 715                 TreeSocket* sock = srv->GetSocket();
 716                 if (sock && sock->GetIOHook() && sock->GetIOHook()->creator == mod)
 717                 {
 718                         sock->SendError("SSL module unloaded");
 719                         sock->Close();
 720                 }
 721         }
 722 }
 723
 724 // note: the protocol does not allow direct umode +o except
 725 // via NICK with 8 params. sending OPERTYPE infers +o modechange
 726 // locally.
 727 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 728 {
 729         if (user->registered != REG_ALL || !IS_LOCAL(user))
 730                 return;
 731         parameterlist params;
 732         params.push_back(":");
 733         params[0].append(opertype);
 734         Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
 735 }
 736
 737 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 738 {
 739         if (!x->IsBurstable() || loopCall)
 740                 return;
 741
 742         parameterlist params;
 743         params.push_back(x->type);
 744         params.push_back(x->Displayable());
 745         params.push_back(ServerInstance->Config->ServerName);
 746         params.push_back(ConvToStr(x->set_time));
 747         params.push_back(ConvToStr(x->duration));
 748         params.push_back(":" + x->reason);
 749
 750         if (!user)
 751         {
 752                 /* Server-set lines */
 753                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "ADDLINE", params);
 754         }
 755         else if (IS_LOCAL(user))
 756         {
 757                 /* User-set lines */
 758                 Utils->DoOneToMany(user->uuid, "ADDLINE", params);
 759         }
 760 }
 761
 762 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 763 {
 764         if (!x->IsBurstable() || loopCall)
 765                 return;
 766
 767         parameterlist params;
 768         params.push_back(x->type);
 769         params.push_back(x->Displayable());
 770
 771         if (!user)
 772         {
 773                 /* Server-unset lines */
 774                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "DELLINE", params);
 775         }
 776         else if (IS_LOCAL(user))
 777         {
 778                 /* User-unset lines */
 779                 Utils->DoOneToMany(user->uuid, "DELLINE", params);
 780         }
 781 }
 782
 783 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 784 {
 785         if (IS_LOCAL(user))
 786         {
 787                 parameterlist params;
 788                 if (!awaymsg.empty())
 789                 {
 790                         params.push_back(ConvToStr(user->awaytime));
 791                         params.push_back(":" + awaymsg);
 792                 }
 793                 Utils->DoOneToMany(user->uuid, "AWAY", params);
 794         }
 795
 796         return MOD_RES_PASSTHRU;
 797 }
 798
 799 void ModuleSpanningTree::ProtoSendMode(void* opaque, TargetTypeFlags target_type, void* target, const parameterlist &modeline, const std::vector<TranslateType> &translate)
 800 {
 801         TreeSocket* s = (TreeSocket*)opaque;
 802         std::string output_text = CommandParser::TranslateUIDs(translate, modeline);
 803
 804         if (target)
 805         {
 806                 if (target_type == TYPE_USER)
 807                 {
 808                         User* u = (User*)target;
 809                         s->WriteLine(":"+ServerInstance->Config->GetSID()+" MODE "+u->uuid+" "+output_text);
 810                 }
 811                 else if (target_type == TYPE_CHANNEL)
 812                 {
 813                         Channel* c = (Channel*)target;
 814                         s->WriteLine(":"+ServerInstance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+output_text);
 815                 }
 816         }
 817 }
 818
 819 void ModuleSpanningTree::ProtoSendMetaData(void* opaque, Extensible* target, const std::string &extname, const std::string &extdata)
 820 {
 821         TreeSocket* s = static_cast<TreeSocket*>(opaque);
 822         User* u = dynamic_cast<User*>(target);
 823         Channel* c = dynamic_cast<Channel*>(target);
 824         if (u)
 825                 s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA "+u->uuid+" "+extname+" :"+extdata);
 826         else if (c)
 827                 s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA "+c->name+" "+ConvToStr(c->age)+" "+extname+" :"+extdata);
 828         else if (!target)
 829                 s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA * "+extname+" :"+extdata);
 830 }
 831
 832 CullResult ModuleSpanningTree::cull()
 833 {
 834         if (Utils)
 835                 Utils->cull();
 836         return this->Module::cull();
 837 }
 838
 839 ModuleSpanningTree::~ModuleSpanningTree()
 840 {
 841         delete ServerInstance->PI;
 842         ServerInstance->PI = new ProtocolInterface;
 843
 844         /* This will also free the listeners */
 845         delete Utils;
 846
 847         delete commands;
 848 }
 849
 850 Version ModuleSpanningTree::GetVersion()
 851 {
 852         return Version("Allows servers to be linked", VF_VENDOR);
 853 }
 854
 855 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 856  * so that any activity it sees is FINAL, e.g. we arent going to send out
 857  * a NICK message before m_cloaking has finished putting the +x on the user,
 858  * etc etc.
 859  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 860  * the module call queue.
 861  */
 862 void ModuleSpanningTree::Prioritize()
 863 {
 864         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
 865 }
 866
 867 MODULE_INIT(ModuleSpanningTree)