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