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