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 /* $ModDesc: Provides a spanning tree server link protocol */
  25
  26 #include "inspircd.h"
  27 #include "socket.h"
  28 #include "xline.h"
  29
  30 #include "resolvers.h"
  31 #include "main.h"
  32 #include "utils.h"
  33 #include "treeserver.h"
  34 #include "link.h"
  35 #include "treesocket.h"
  36 #include "commands.h"
  37 #include "protocolinterface.h"
  38
  39 ModuleSpanningTree::ModuleSpanningTree()
  40         : commands(NULL), DNS(this, "DNS"), Utils(NULL)
  41 {
  42 }
  43
  44 SpanningTreeCommands::SpanningTreeCommands(ModuleSpanningTree* module)
  45         : rconnect(module, module->Utils), rsquit(module, module->Utils),
  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 {
  50 }
  51
  52 void ModuleSpanningTree::init()
  53 {
  54         Utils = new SpanningTreeUtilities(this);
  55         commands = new SpanningTreeCommands(this);
  56         ServerInstance->Modules->AddService(commands->rconnect);
  57         ServerInstance->Modules->AddService(commands->rsquit);
  58         ServerInstance->Modules->AddService(commands->svsjoin);
  59         ServerInstance->Modules->AddService(commands->svspart);
  60         ServerInstance->Modules->AddService(commands->svsnick);
  61         ServerInstance->Modules->AddService(commands->metadata);
  62         ServerInstance->Modules->AddService(commands->uid);
  63         ServerInstance->Modules->AddService(commands->opertype);
  64         ServerInstance->Modules->AddService(commands->fjoin);
  65         ServerInstance->Modules->AddService(commands->ijoin);
  66         ServerInstance->Modules->AddService(commands->resync);
  67         ServerInstance->Modules->AddService(commands->fmode);
  68         ServerInstance->Modules->AddService(commands->ftopic);
  69         ServerInstance->Modules->AddService(commands->fhost);
  70         ServerInstance->Modules->AddService(commands->fident);
  71         ServerInstance->Modules->AddService(commands->fname);
  72
  73         Implementation eventlist[] =
  74         {
  75                 I_OnPreCommand, I_OnGetServerDescription, I_OnUserInvite, I_OnPostTopicChange,
  76                 I_OnUserMessage, I_OnBackgroundTimer, I_OnUserJoin,
  77                 I_OnChangeHost, I_OnChangeName, I_OnChangeIdent, I_OnUserPart, I_OnUnloadModule,
  78                 I_OnUserQuit, I_OnUserPostNick, I_OnUserKick, I_OnRemoteKill, I_OnRehash, I_OnPreRehash,
  79                 I_OnOper, I_OnAddLine, I_OnDelLine, I_OnMode, I_OnLoadModule, I_OnStats,
  80                 I_OnSetAway, I_OnPostCommand, I_OnUserConnect, I_OnAcceptConnection
  81         };
  82         ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
  83
  84         delete ServerInstance->PI;
  85         ServerInstance->PI = new SpanningTreeProtocolInterface(Utils);
  86         loopCall = false;
  87
  88         // update our local user count
  89         Utils->TreeRoot->UserCount = ServerInstance->Users->local_users.size();
  90 }
  91
  92 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
  93 {
  94         std::string Parent = Utils->TreeRoot->GetName();
  95         if (Current->GetParent())
  96         {
  97                 Parent = Current->GetParent()->GetName();
  98         }
  99         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 100         {
 101                 if ((Current->GetChild(q)->Hidden) || ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName()))))
 102                 {
 103                         if (user->IsOper())
 104                         {
 105                                  ShowLinks(Current->GetChild(q),user,hops+1);
 106                         }
 107                 }
 108                 else
 109                 {
 110                         ShowLinks(Current->GetChild(q),user,hops+1);
 111                 }
 112         }
 113         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
 114         if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName())) && (!user->IsOper()))
 115                 return;
 116         /* Or if the server is hidden and they're not an oper */
 117         else if ((Current->Hidden) && (!user->IsOper()))
 118                 return;
 119
 120         std::string servername = Current->GetName();
 121         user->WriteNumeric(364, "%s %s %s :%d %s",      user->nick.c_str(), servername.c_str(),
 122                         (Utils->FlatLinks && (!user->IsOper())) ? ServerInstance->Config->ServerName.c_str() : Parent.c_str(),
 123                         (Utils->FlatLinks && (!user->IsOper())) ? 0 : hops,
 124                         Current->GetDesc().c_str());
 125 }
 126
 127 int ModuleSpanningTree::CountServs()
 128 {
 129         return Utils->serverlist.size();
 130 }
 131
 132 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 133 {
 134         ShowLinks(Utils->TreeRoot,user,0);
 135         user->WriteNumeric(365, "%s * :End of /LINKS list.",user->nick.c_str());
 136         return;
 137 }
 138
 139 std::string ModuleSpanningTree::TimeToStr(time_t secs)
 140 {
 141         time_t mins_up = secs / 60;
 142         time_t hours_up = mins_up / 60;
 143         time_t days_up = hours_up / 24;
 144         secs = secs % 60;
 145         mins_up = mins_up % 60;
 146         hours_up = hours_up % 24;
 147         return ((days_up ? (ConvToStr(days_up) + "d") : "")
 148                         + (hours_up ? (ConvToStr(hours_up) + "h") : "")
 149                         + (mins_up ? (ConvToStr(mins_up) + "m") : "")
 150                         + ConvToStr(secs) + "s");
 151 }
 152
 153 void ModuleSpanningTree::DoPingChecks(time_t curtime)
 154 {
 155         /*
 156          * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
 157          * This prevents lost REMOTECONNECT notices
 158          */
 159         long ts = ServerInstance->Time() * 1000 + (ServerInstance->Time_ns() / 1000000);
 160
 161 restart:
 162         for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
 163         {
 164                 TreeServer *s = i->second;
 165
 166                 if (s->GetSocket() && s->GetSocket()->GetLinkState() == DYING)
 167                 {
 168                         s->GetSocket()->Close();
 169                         goto restart;
 170                 }
 171
 172                 // Fix for bug #792, do not ping servers that are not connected yet!
 173                 // Remote servers have Socket == NULL and local connected servers have
 174                 // Socket->LinkState == CONNECTED
 175                 if (s->GetSocket() && s->GetSocket()->GetLinkState() != CONNECTED)
 176                         continue;
 177
 178                 // Now do PING checks on all servers
 179                 TreeServer *mts = Utils->BestRouteTo(s->GetID());
 180
 181                 if (mts)
 182                 {
 183                         // Only ping if this server needs one
 184                         if (curtime >= s->NextPingTime())
 185                         {
 186                                 // And if they answered the last
 187                                 if (s->AnsweredLastPing())
 188                                 {
 189                                         // They did, send a ping to them
 190                                         s->SetNextPingTime(curtime + Utils->PingFreq);
 191                                         TreeSocket *tsock = mts->GetSocket();
 192
 193                                         // ... if we can find a proper route to them
 194                                         if (tsock)
 195                                         {
 196                                                 tsock->WriteLine(":" + ServerInstance->Config->GetSID() + " PING " + s->GetID());
 197                                                 s->LastPingMsec = ts;
 198                                         }
 199                                 }
 200                                 else
 201                                 {
 202                                         // They didn't answer the last ping, if they are locally connected, get rid of them.
 203                                         TreeSocket *sock = s->GetSocket();
 204                                         if (sock)
 205                                         {
 206                                                 sock->SendError("Ping timeout");
 207                                                 sock->Close();
 208                                                 goto restart;
 209                                         }
 210                                 }
 211                         }
 212
 213                         // If warn on ping enabled and not warned and the difference is sufficient and they didn't answer the last ping...
 214                         if ((Utils->PingWarnTime) && (!s->Warned) && (curtime >= s->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!s->AnsweredLastPing()))
 215                         {
 216                                 /* The server hasnt responded, send a warning to opers */
 217                                 std::string servername = s->GetName();
 218                                 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", servername.c_str(), Utils->PingWarnTime);
 219                                 s->Warned = true;
 220                         }
 221                 }
 222         }
 223 }
 224
 225 void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
 226 {
 227         if (!a)
 228                 return;
 229         for(unsigned int j=0; j < a->servers.size(); j++)
 230         {
 231                 if (Utils->FindServer(a->servers[j]))
 232                 {
 233                         // found something in this block. Should the server fail,
 234                         // we want to start at the start of the list, not in the
 235                         // middle where we left off
 236                         a->position = -1;
 237                         return;
 238                 }
 239         }
 240         if (on_timer && a->position >= 0)
 241                 return;
 242         if (!on_timer && a->position < 0)
 243                 return;
 244
 245         a->position++;
 246         while (a->position < (int)a->servers.size())
 247         {
 248                 Link* x = Utils->FindLink(a->servers[a->position]);
 249                 if (x)
 250                 {
 251                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 252                         ConnectServer(x, a);
 253                         return;
 254                 }
 255                 a->position++;
 256         }
 257         // Autoconnect chain has been fully iterated; start at the beginning on the
 258         // next AutoConnectServers run
 259         a->position = -1;
 260 }
 261
 262 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 263 {
 264         bool ipvalid = true;
 265
 266         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 267         {
 268                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 269                 return;
 270         }
 271
 272         DNS::QueryType start_type = DNS::QUERY_AAAA;
 273         if (strchr(x->IPAddr.c_str(),':'))
 274         {
 275                 in6_addr n;
 276                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 277                         ipvalid = false;
 278         }
 279         else
 280         {
 281                 in_addr n;
 282                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 283                         ipvalid = false;
 284         }
 285
 286         /* Do we already have an IP? If so, no need to resolve it. */
 287         if (ipvalid)
 288         {
 289                 /* Gave a hook, but it wasnt one we know */
 290                 TreeSocket* newsocket = new TreeSocket(Utils, x, y, x->IPAddr);
 291                 if (newsocket->GetFd() > -1)
 292                 {
 293                         /* Handled automatically on success */
 294                 }
 295                 else
 296                 {
 297                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
 298                                 x->Name.c_str(), newsocket->getError().c_str());
 299                         ServerInstance->GlobalCulls.AddItem(newsocket);
 300                 }
 301         }
 302         else if (!DNS)
 303         {
 304                 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());
 305         }
 306         else
 307         {
 308                 ServernameResolver* snr = new ServernameResolver(Utils, *DNS, x->IPAddr, x, start_type, y);
 309                 try
 310                 {
 311                         DNS->Process(snr);
 312                 }
 313                 catch (DNS::Exception& e)
 314                 {
 315                         delete snr;
 316                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason());
 317                         ConnectServer(y, false);
 318                 }
 319         }
 320 }
 321
 322 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 323 {
 324         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 325         {
 326                 Autoconnect* x = *i;
 327                 if (curtime >= x->NextConnectTime)
 328                 {
 329                         x->NextConnectTime = curtime + x->Period;
 330                         ConnectServer(x, true);
 331                 }
 332         }
 333 }
 334
 335 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 336 {
 337         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 338         while (i != Utils->timeoutlist.end())
 339         {
 340                 TreeSocket* s = i->first;
 341                 std::pair<std::string, int> p = i->second;
 342                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 343                 i++;
 344                 if (s->GetLinkState() == DYING)
 345                 {
 346                         Utils->timeoutlist.erase(me);
 347                         s->Close();
 348                 }
 349                 else if (curtime > s->age + p.second)
 350                 {
 351                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 352                         Utils->timeoutlist.erase(me);
 353                         s->Close();
 354                 }
 355         }
 356 }
 357
 358 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 359 {
 360         // we've already checked if pcnt > 0, so this is safe
 361         TreeServer* found = Utils->FindServerMask(parameters[0]);
 362         if (found)
 363         {
 364                 if (found == Utils->TreeRoot)
 365                 {
 366                         // Pass to default VERSION handler.
 367                         return MOD_RES_PASSTHRU;
 368                 }
 369                 std::string Version = found->GetVersion();
 370                 user->WriteNumeric(351, "%s :%s",user->nick.c_str(),Version.c_str());
 371         }
 372         else
 373         {
 374                 user->WriteNumeric(402, "%s %s :No such server",user->nick.c_str(),parameters[0].c_str());
 375         }
 376         return MOD_RES_DENY;
 377 }
 378
 379 /* This method will attempt to get a message to a remote user.
 380  */
 381 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 382 {
 383         std::string text;
 384         VAFORMAT(text, format, format);
 385
 386         if (IS_LOCAL(user))
 387                 user->WriteNotice(text);
 388         else
 389                 ServerInstance->PI->SendUserNotice(user, text);
 390 }
 391
 392 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 393 {
 394         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 395         {
 396                 Link* x = *i;
 397                 if (InspIRCd::Match(x->Name.c_str(),parameters[0]))
 398                 {
 399                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 400                         {
 401                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 402                                 return MOD_RES_DENY;
 403                         }
 404
 405                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 406                         if (!CheckDupe)
 407                         {
 408                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 409                                 ConnectServer(x);
 410                                 return MOD_RES_DENY;
 411                         }
 412                         else
 413                         {
 414                                 std::string servername = CheckDupe->GetParent()->GetName();
 415                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002", x->Name.c_str(), servername.c_str());
 416                                 return MOD_RES_DENY;
 417                         }
 418                 }
 419         }
 420         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 421         return MOD_RES_DENY;
 422 }
 423
 424 void ModuleSpanningTree::OnGetServerDescription(const std::string &servername,std::string &description)
 425 {
 426         TreeServer* s = Utils->FindServer(servername);
 427         if (s)
 428         {
 429                 description = s->GetDesc();
 430         }
 431 }
 432
 433 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
 434 {
 435         if (IS_LOCAL(source))
 436         {
 437                 parameterlist params;
 438                 params.push_back(dest->uuid);
 439                 params.push_back(channel->name);
 440                 params.push_back(ConvToStr(expiry));
 441                 Utils->DoOneToMany(source->uuid,"INVITE",params);
 442         }
 443 }
 444
 445 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 446 {
 447         // Drop remote events on the floor.
 448         if (!IS_LOCAL(user))
 449                 return;
 450
 451         parameterlist params;
 452         params.push_back(chan->name);
 453         params.push_back(":"+topic);
 454         Utils->DoOneToMany(user->uuid,"TOPIC",params);
 455 }
 456
 457 void ModuleSpanningTree::LocalMessage(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list, const char* message_type)
 458 {
 459         /* Server or remote origin, dest should always be non-null */
 460         if ((!user) || (!IS_LOCAL(user)) || (!dest))
 461                 return;
 462
 463         if (target_type == TYPE_USER)
 464         {
 465                 User* d = (User*) dest;
 466                 if (!IS_LOCAL(d))
 467                 {
 468                         parameterlist params;
 469                         params.push_back(d->uuid);
 470                         params.push_back(":"+text);
 471                         Utils->DoOneToOne(user->uuid, message_type, params, d->server);
 472                 }
 473         }
 474         else if (target_type == TYPE_CHANNEL)
 475         {
 476                 Utils->SendChannelMessage(user->uuid, (Channel*)dest, text, status, exempt_list, message_type);
 477         }
 478         else if (target_type == TYPE_SERVER)
 479         {
 480                 char* target = (char*) dest;
 481                 parameterlist par;
 482                 par.push_back(target);
 483                 par.push_back(":"+text);
 484                 Utils->DoOneToMany(user->uuid, message_type, par);
 485         }
 486 }
 487
 488 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string& text, char status, const CUList& exempt_list, MessageType msgtype)
 489 {
 490         LocalMessage(user, dest, target_type, text, status, exempt_list, (msgtype == MSG_PRIVMSG ? "PRIVMSG" : "NOTICE"));
 491 }
 492
 493 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 494 {
 495         AutoConnectServers(curtime);
 496         DoPingChecks(curtime);
 497         DoConnectTimeout(curtime);
 498 }
 499
 500 void ModuleSpanningTree::OnUserConnect(LocalUser* user)
 501 {
 502         if (user->quitting)
 503                 return;
 504
 505         parameterlist params;
 506         params.push_back(user->uuid);
 507         params.push_back(ConvToStr(user->age));
 508         params.push_back(user->nick);
 509         params.push_back(user->host);
 510         params.push_back(user->dhost);
 511         params.push_back(user->ident);
 512         params.push_back(user->GetIPString());
 513         params.push_back(ConvToStr(user->signon));
 514         params.push_back("+"+std::string(user->FormatModes(true)));
 515         params.push_back(":"+user->fullname);
 516         Utils->DoOneToMany(ServerInstance->Config->GetSID(), "UID", params);
 517
 518         if (user->IsOper())
 519         {
 520                 params.clear();
 521                 params.push_back(":");
 522                 params[0].append(user->oper->name);
 523                 Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
 524         }
 525
 526         for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
 527         {
 528                 ExtensionItem* item = i->first;
 529                 std::string value = item->serialize(FORMAT_NETWORK, user, i->second);
 530                 if (!value.empty())
 531                         ServerInstance->PI->SendMetaData(user, item->name, value);
 532         }
 533
 534         Utils->TreeRoot->UserCount++;
 535 }
 536
 537 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created_by_local, CUList& excepts)
 538 {
 539         // Only do this for local users
 540         if (IS_LOCAL(memb->user))
 541         {
 542                 parameterlist params;
 543                 params.push_back(memb->chan->name);
 544                 if (created_by_local)
 545                 {
 546                         params.push_back(ConvToStr(memb->chan->age));
 547                         params.push_back(std::string("+") + memb->chan->ChanModes(true));
 548                         params.push_back(memb->modes+","+memb->user->uuid);
 549                         Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
 550                 }
 551                 else
 552                 {
 553                         if (!memb->modes.empty())
 554                         {
 555                                 params.push_back(ConvToStr(memb->chan->age));
 556                                 params.push_back(memb->modes);
 557                         }
 558                         Utils->DoOneToMany(memb->user->uuid, "IJOIN", params);
 559                 }
 560         }
 561 }
 562
 563 void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
 564 {
 565         if (user->registered != REG_ALL || !IS_LOCAL(user))
 566                 return;
 567
 568         parameterlist params;
 569         params.push_back(newhost);
 570         Utils->DoOneToMany(user->uuid,"FHOST",params);
 571 }
 572
 573 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 574 {
 575         if (user->registered != REG_ALL || !IS_LOCAL(user))
 576                 return;
 577
 578         parameterlist params;
 579         params.push_back(gecos);
 580         Utils->DoOneToMany(user->uuid,"FNAME",params);
 581 }
 582
 583 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 584 {
 585         // only occurs for local clients
 586         if (user->registered != REG_ALL)
 587                 return;
 588
 589         parameterlist params;
 590         params.push_back(ident);
 591         Utils->DoOneToMany(user->uuid,"FIDENT",params);
 592 }
 593
 594 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 595 {
 596         if (IS_LOCAL(memb->user))
 597         {
 598                 parameterlist params;
 599                 params.push_back(memb->chan->name);
 600                 if (!partmessage.empty())
 601                         params.push_back(":"+partmessage);
 602                 Utils->DoOneToMany(memb->user->uuid,"PART",params);
 603         }
 604 }
 605
 606 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 607 {
 608         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 609         {
 610                 parameterlist params;
 611
 612                 if (oper_message != reason)
 613                 {
 614                         params.push_back(":"+oper_message);
 615                         Utils->DoOneToMany(user->uuid,"OPERQUIT",params);
 616                 }
 617                 params.clear();
 618                 params.push_back(":"+reason);
 619                 Utils->DoOneToMany(user->uuid,"QUIT",params);
 620         }
 621
 622         // Regardless, We need to modify the user Counts..
 623         TreeServer* SourceServer = Utils->FindServer(user->server);
 624         if (SourceServer)
 625         {
 626                 SourceServer->UserCount--;
 627         }
 628 }
 629
 630 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 631 {
 632         if (IS_LOCAL(user))
 633         {
 634                 parameterlist params;
 635                 params.push_back(user->nick);
 636
 637                 /** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
 638                  */
 639                 if (irc::string(user->nick.c_str()) != assign(oldnick))
 640                         user->age = ServerInstance->Time();
 641
 642                 params.push_back(ConvToStr(user->age));
 643                 Utils->DoOneToMany(user->uuid,"NICK",params);
 644         }
 645         else if (!loopCall && user->nick == user->uuid)
 646         {
 647                 parameterlist params;
 648                 params.push_back(user->uuid);
 649                 params.push_back(ConvToStr(user->age));
 650                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"SAVE",params);
 651         }
 652 }
 653
 654 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 655 {
 656         parameterlist params;
 657         params.push_back(memb->chan->name);
 658         params.push_back(memb->user->uuid);
 659         params.push_back(":"+reason);
 660         if (IS_LOCAL(source))
 661         {
 662                 Utils->DoOneToMany(source->uuid,"KICK",params);
 663         }
 664         else if (source == ServerInstance->FakeClient)
 665         {
 666                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"KICK",params);
 667         }
 668 }
 669
 670 void ModuleSpanningTree::OnRemoteKill(User* source, User* dest, const std::string &reason, const std::string &operreason)
 671 {
 672         if (!IS_LOCAL(source))
 673                 return; // Only start routing if we're origin.
 674
 675         ServerInstance->OperQuit.set(dest, operreason);
 676         parameterlist params;
 677         params.push_back(":"+operreason);
 678         Utils->DoOneToMany(dest->uuid,"OPERQUIT",params);
 679         params.clear();
 680         params.push_back(dest->uuid);
 681         params.push_back(":"+reason);
 682         Utils->DoOneToMany(source->uuid,"KILL",params);
 683 }
 684
 685 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 686 {
 687         if (loopCall)
 688                 return; // Don't generate a REHASH here if we're in the middle of processing a message that generated this one
 689
 690         ServerInstance->Logs->Log("remoterehash", LOG_DEBUG, "called with param %s", parameter.c_str());
 691
 692         // Send out to other servers
 693         if (!parameter.empty() && parameter[0] != '-')
 694         {
 695                 parameterlist params;
 696                 params.push_back(parameter);
 697                 Utils->DoOneToAllButSender(user ? user->uuid : ServerInstance->Config->GetSID(), "REHASH", params, user ? user->server : ServerInstance->Config->ServerName);
 698         }
 699 }
 700
 701 void ModuleSpanningTree::OnRehash(User* user)
 702 {
 703         // Re-read config stuff
 704         try
 705         {
 706                 Utils->ReadConfiguration();
 707         }
 708         catch (ModuleException& e)
 709         {
 710                 // Refresh the IP cache anyway, so servers read before the error will be allowed to connect
 711                 Utils->RefreshIPCache();
 712                 // Always warn local opers with snomask +l, also warn globally (snomask +L) if the rehash was issued by a remote user
 713                 std::string msg = "Error in configuration: ";
 714                 msg.append(e.GetReason());
 715                 ServerInstance->SNO->WriteToSnoMask('l', msg);
 716                 if (user && !IS_LOCAL(user))
 717                         ServerInstance->PI->SendSNONotice("L", msg);
 718         }
 719 }
 720
 721 void ModuleSpanningTree::OnLoadModule(Module* mod)
 722 {
 723         std::string data;
 724         data.push_back('+');
 725         data.append(mod->ModuleSourceFile);
 726         Version v = mod->GetVersion();
 727         if (!v.link_data.empty())
 728         {
 729                 data.push_back('=');
 730                 data.append(v.link_data);
 731         }
 732         ServerInstance->PI->SendMetaData(NULL, "modules", data);
 733 }
 734
 735 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 736 {
 737         ServerInstance->PI->SendMetaData(NULL, "modules", "-" + mod->ModuleSourceFile);
 738
 739         unsigned int items = Utils->TreeRoot->ChildCount();
 740         for(unsigned int x = 0; x < items; x++)
 741         {
 742                 TreeServer* srv = Utils->TreeRoot->GetChild(x);
 743                 TreeSocket* sock = srv->GetSocket();
 744                 if (sock && sock->GetIOHook() == mod)
 745                 {
 746                         sock->SendError("SSL module unloaded");
 747                         sock->Close();
 748                 }
 749         }
 750 }
 751
 752 // note: the protocol does not allow direct umode +o except
 753 // via NICK with 8 params. sending OPERTYPE infers +o modechange
 754 // locally.
 755 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 756 {
 757         if (user->registered != REG_ALL || !IS_LOCAL(user))
 758                 return;
 759         parameterlist params;
 760         params.push_back(":");
 761         params[0].append(opertype);
 762         Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
 763 }
 764
 765 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 766 {
 767         if (!x->IsBurstable() || loopCall)
 768                 return;
 769
 770         parameterlist params;
 771         params.push_back(x->type);
 772         params.push_back(x->Displayable());
 773         params.push_back(ServerInstance->Config->ServerName);
 774         params.push_back(ConvToStr(x->set_time));
 775         params.push_back(ConvToStr(x->duration));
 776         params.push_back(":" + x->reason);
 777
 778         if (!user)
 779         {
 780                 /* Server-set lines */
 781                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "ADDLINE", params);
 782         }
 783         else if (IS_LOCAL(user))
 784         {
 785                 /* User-set lines */
 786                 Utils->DoOneToMany(user->uuid, "ADDLINE", params);
 787         }
 788 }
 789
 790 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 791 {
 792         if (!x->IsBurstable() || loopCall)
 793                 return;
 794
 795         parameterlist params;
 796         params.push_back(x->type);
 797         params.push_back(x->Displayable());
 798
 799         if (!user)
 800         {
 801                 /* Server-unset lines */
 802                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "DELLINE", params);
 803         }
 804         else if (IS_LOCAL(user))
 805         {
 806                 /* User-unset lines */
 807                 Utils->DoOneToMany(user->uuid, "DELLINE", params);
 808         }
 809 }
 810
 811 void ModuleSpanningTree::OnMode(User* user, void* dest, int target_type, const parameterlist &text, const std::vector<TranslateType> &translate)
 812 {
 813         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 814         {
 815                 parameterlist params;
 816                 std::string output_text;
 817
 818                 ServerInstance->Parser->TranslateUIDs(translate, text, output_text);
 819
 820                 if (target_type == TYPE_USER)
 821                 {
 822                         User* u = (User*)dest;
 823                         params.push_back(u->uuid);
 824                         params.push_back(output_text);
 825                         Utils->DoOneToMany(user->uuid, "MODE", params);
 826                 }
 827                 else
 828                 {
 829                         Channel* c = (Channel*)dest;
 830                         params.push_back(c->name);
 831                         params.push_back(ConvToStr(c->age));
 832                         params.push_back(output_text);
 833                         Utils->DoOneToMany(user->uuid, "FMODE", params);
 834                 }
 835         }
 836 }
 837
 838 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 839 {
 840         if (IS_LOCAL(user))
 841         {
 842                 parameterlist params;
 843                 if (!awaymsg.empty())
 844                 {
 845                         params.push_back(ConvToStr(user->awaytime));
 846                         params.push_back(":" + awaymsg);
 847                 }
 848                 Utils->DoOneToMany(user->uuid, "AWAY", params);
 849         }
 850
 851         return MOD_RES_PASSTHRU;
 852 }
 853
 854 void ModuleSpanningTree::ProtoSendMode(void* opaque, TargetTypeFlags target_type, void* target, const parameterlist &modeline, const std::vector<TranslateType> &translate)
 855 {
 856         TreeSocket* s = (TreeSocket*)opaque;
 857         std::string output_text;
 858
 859         ServerInstance->Parser->TranslateUIDs(translate, modeline, output_text);
 860
 861         if (target)
 862         {
 863                 if (target_type == TYPE_USER)
 864                 {
 865                         User* u = (User*)target;
 866                         s->WriteLine(":"+ServerInstance->Config->GetSID()+" MODE "+u->uuid+" "+output_text);
 867                 }
 868                 else if (target_type == TYPE_CHANNEL)
 869                 {
 870                         Channel* c = (Channel*)target;
 871                         s->WriteLine(":"+ServerInstance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+output_text);
 872                 }
 873         }
 874 }
 875
 876 void ModuleSpanningTree::ProtoSendMetaData(void* opaque, Extensible* target, const std::string &extname, const std::string &extdata)
 877 {
 878         TreeSocket* s = static_cast<TreeSocket*>(opaque);
 879         User* u = dynamic_cast<User*>(target);
 880         Channel* c = dynamic_cast<Channel*>(target);
 881         if (u)
 882                 s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA "+u->uuid+" "+extname+" :"+extdata);
 883         else if (c)
 884                 s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA "+c->name+" "+ConvToStr(c->age)+" "+extname+" :"+extdata);
 885         else if (!target)
 886                 s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA * "+extname+" :"+extdata);
 887 }
 888
 889 CullResult ModuleSpanningTree::cull()
 890 {
 891         Utils->cull();
 892         return this->Module::cull();
 893 }
 894
 895 ModuleSpanningTree::~ModuleSpanningTree()
 896 {
 897         delete ServerInstance->PI;
 898         ServerInstance->PI = new ProtocolInterface;
 899
 900         /* This will also free the listeners */
 901         delete Utils;
 902
 903         delete commands;
 904 }
 905
 906 Version ModuleSpanningTree::GetVersion()
 907 {
 908         return Version("Allows servers to be linked", VF_VENDOR);
 909 }
 910
 911 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 912  * so that any activity it sees is FINAL, e.g. we arent going to send out
 913  * a NICK message before m_cloaking has finished putting the +x on the user,
 914  * etc etc.
 915  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 916  * the module call queue.
 917  */
 918 void ModuleSpanningTree::Prioritize()
 919 {
 920         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
 921 }
 922
 923 MODULE_INIT(ModuleSpanningTree)