src/modules/m_spanningtree/main.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $ModDesc: Provides a spanning tree server link protocol */
  15
  16 #include "inspircd.h"
  17 #include "socket.h"
  18 #include "xline.h"
  19
  20 #include "cachetimer.h"
  21 #include "resolvers.h"
  22 #include "main.h"
  23 #include "utils.h"
  24 #include "treeserver.h"
  25 #include "link.h"
  26 #include "treesocket.h"
  27 #include "rconnect.h"
  28 #include "rsquit.h"
  29 #include "protocolinterface.h"
  30
  31 /* $ModDep: m_spanningtree/cachetimer.h m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h m_spanningtree/rconnect.h m_spanningtree/rsquit.h m_spanningtree/protocolinterface.h */
  32
  33 ModuleSpanningTree::ModuleSpanningTree()
  34         : max_local(0), max_global(0)
  35 {
  36         ServerInstance->Modules->UseInterface("BufferedSocketHook");
  37         Utils = new SpanningTreeUtilities(this);
  38         command_rconnect = new CommandRConnect(this, Utils);
  39         ServerInstance->AddCommand(command_rconnect);
  40         command_rsquit = new CommandRSQuit(this, Utils);
  41         ServerInstance->AddCommand(command_rsquit);
  42         RefreshTimer = new CacheRefreshTimer(Utils);
  43         ServerInstance->Timers->AddTimer(RefreshTimer);
  44
  45         Implementation eventlist[] =
  46         {
  47                 I_OnPreCommand, I_OnGetServerDescription, I_OnUserInvite, I_OnPostTopicChange,
  48                 I_OnWallops, I_OnUserNotice, I_OnUserMessage, I_OnBackgroundTimer, I_OnUserJoin,
  49                 I_OnChangeHost, I_OnChangeName, I_OnChangeIdent, I_OnUserPart, I_OnUnloadModule,
  50                 I_OnUserQuit, I_OnUserPostNick, I_OnUserKick, I_OnRemoteKill, I_OnRehash, I_OnPreRehash,
  51                 I_OnOper, I_OnAddLine, I_OnDelLine, I_OnMode, I_OnLoadModule, I_OnStats,
  52                 I_OnSetAway, I_OnPostCommand, I_OnUserConnect, I_OnAcceptConnection
  53         };
  54         ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
  55
  56         delete ServerInstance->PI;
  57         ServerInstance->PI = new SpanningTreeProtocolInterface(this, Utils);
  58         loopCall = false;
  59
  60         // update our local user count
  61         Utils->TreeRoot->SetUserCount(ServerInstance->Users->local_users.size());
  62 }
  63
  64 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
  65 {
  66         std::string Parent = Utils->TreeRoot->GetName();
  67         if (Current->GetParent())
  68         {
  69                 Parent = Current->GetParent()->GetName();
  70         }
  71         for (unsigned int q = 0; q < Current->ChildCount(); q++)
  72         {
  73                 if ((Current->GetChild(q)->Hidden) || ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str()))))
  74                 {
  75                         if (IS_OPER(user))
  76                         {
  77                                  ShowLinks(Current->GetChild(q),user,hops+1);
  78                         }
  79                 }
  80                 else
  81                 {
  82                         ShowLinks(Current->GetChild(q),user,hops+1);
  83                 }
  84         }
  85         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
  86         if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!IS_OPER(user)))
  87                 return;
  88         /* Or if the server is hidden and they're not an oper */
  89         else if ((Current->Hidden) && (!IS_OPER(user)))
  90                 return;
  91
  92         user->WriteNumeric(364, "%s %s %s :%d %s",      user->nick.c_str(),Current->GetName().c_str(),
  93                         (Utils->FlatLinks && (!IS_OPER(user))) ? ServerInstance->Config->ServerName.c_str() : Parent.c_str(),
  94                         (Utils->FlatLinks && (!IS_OPER(user))) ? 0 : hops,
  95                         Current->GetDesc().c_str());
  96 }
  97
  98 int ModuleSpanningTree::CountLocalServs()
  99 {
 100         return Utils->TreeRoot->ChildCount();
 101 }
 102
 103 int ModuleSpanningTree::CountServs()
 104 {
 105         return Utils->serverlist.size();
 106 }
 107
 108 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 109 {
 110         ShowLinks(Utils->TreeRoot,user,0);
 111         user->WriteNumeric(365, "%s * :End of /LINKS list.",user->nick.c_str());
 112         return;
 113 }
 114
 115 void ModuleSpanningTree::HandleLusers(const std::vector<std::string>& parameters, User* user)
 116 {
 117         unsigned int n_users = ServerInstance->Users->UserCount();
 118
 119         /* Only update these when someone wants to see them, more efficient */
 120         if ((unsigned int)ServerInstance->Users->LocalUserCount() > max_local)
 121                 max_local = ServerInstance->Users->LocalUserCount();
 122         if (n_users > max_global)
 123                 max_global = n_users;
 124
 125         unsigned int ulined_count = 0;
 126         unsigned int ulined_local_count = 0;
 127
 128         /* If ulined are hidden and we're not an oper, count the number of ulined servers hidden,
 129          * locally and globally (locally means directly connected to us)
 130          */
 131         if ((Utils->HideULines) && (!IS_OPER(user)))
 132         {
 133                 for (server_hash::iterator q = Utils->serverlist.begin(); q != Utils->serverlist.end(); q++)
 134                 {
 135                         if (ServerInstance->ULine(q->second->GetName().c_str()))
 136                         {
 137                                 ulined_count++;
 138                                 if (q->second->GetParent() == Utils->TreeRoot)
 139                                         ulined_local_count++;
 140                         }
 141                 }
 142         }
 143         user->WriteNumeric(251, "%s :There are %d users and %d invisible on %d servers",user->nick.c_str(),
 144                         n_users-ServerInstance->Users->ModeCount('i'),
 145                         ServerInstance->Users->ModeCount('i'),
 146                         ulined_count ? this->CountServs() - ulined_count : this->CountServs());
 147
 148         if (ServerInstance->Users->OperCount())
 149                 user->WriteNumeric(252, "%s %d :operator(s) online",user->nick.c_str(),ServerInstance->Users->OperCount());
 150
 151         if (ServerInstance->Users->UnregisteredUserCount())
 152                 user->WriteNumeric(253, "%s %d :unknown connections",user->nick.c_str(),ServerInstance->Users->UnregisteredUserCount());
 153
 154         if (ServerInstance->ChannelCount())
 155                 user->WriteNumeric(254, "%s %ld :channels formed",user->nick.c_str(),ServerInstance->ChannelCount());
 156
 157         user->WriteNumeric(255, "%s :I have %d clients and %d servers",user->nick.c_str(),ServerInstance->Users->LocalUserCount(),ulined_local_count ? this->CountLocalServs() - ulined_local_count : this->CountLocalServs());
 158         user->WriteNumeric(265, "%s :Current Local Users: %d  Max: %d",user->nick.c_str(),ServerInstance->Users->LocalUserCount(),max_local);
 159         user->WriteNumeric(266, "%s :Current Global Users: %d  Max: %d",user->nick.c_str(),n_users,max_global);
 160         return;
 161 }
 162
 163 std::string ModuleSpanningTree::TimeToStr(time_t secs)
 164 {
 165         time_t mins_up = secs / 60;
 166         time_t hours_up = mins_up / 60;
 167         time_t days_up = hours_up / 24;
 168         secs = secs % 60;
 169         mins_up = mins_up % 60;
 170         hours_up = hours_up % 24;
 171         return ((days_up ? (ConvToStr(days_up) + "d") : std::string(""))
 172                         + (hours_up ? (ConvToStr(hours_up) + "h") : std::string(""))
 173                         + (mins_up ? (ConvToStr(mins_up) + "m") : std::string(""))
 174                         + ConvToStr(secs) + "s");
 175 }
 176
 177 void ModuleSpanningTree::DoPingChecks(time_t curtime)
 178 {
 179         /*
 180          * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
 181          * This prevents lost REMOTECONNECT notices
 182          */
 183         timeval t;
 184         gettimeofday(&t, NULL);
 185         long ts = (t.tv_sec * 1000) + (t.tv_usec / 1000);
 186
 187         for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
 188         {
 189                 TreeServer *s = i->second;
 190
 191                 // Fix for bug #792, do not ping servers that are not connected yet!
 192                 // Remote servers have Socket == NULL and local connected servers have
 193                 // Socket->LinkState == CONNECTED
 194                 if (s->GetSocket() && s->GetSocket()->GetLinkState() != CONNECTED)
 195                         continue;
 196
 197                 // Now do PING checks on all servers
 198                 TreeServer *mts = Utils->BestRouteTo(s->GetID());
 199
 200                 if (mts)
 201                 {
 202                         // Only ping if this server needs one
 203                         if (curtime >= s->NextPingTime())
 204                         {
 205                                 // And if they answered the last
 206                                 if (s->AnsweredLastPing())
 207                                 {
 208                                         // They did, send a ping to them
 209                                         s->SetNextPingTime(curtime + Utils->PingFreq);
 210                                         TreeSocket *tsock = mts->GetSocket();
 211
 212                                         // ... if we can find a proper route to them
 213                                         if (tsock)
 214                                         {
 215                                                 tsock->WriteLine(std::string(":") + ServerInstance->Config->GetSID() + " PING " +
 216                                                                 ServerInstance->Config->GetSID() + " " + s->GetID());
 217                                                 s->LastPingMsec = ts;
 218                                         }
 219                                 }
 220                                 else
 221                                 {
 222                                         // They didn't answer the last ping, if they are locally connected, get rid of them.
 223                                         TreeSocket *sock = s->GetSocket();
 224                                         if (sock)
 225                                         {
 226                                                 sock->SendError("Ping timeout");
 227                                                 sock->Squit(s,"Ping timeout");
 228                                                 ServerInstance->SE->DelFd(sock);
 229                                                 sock->Close();
 230                                                 return;
 231                                         }
 232                                 }
 233                         }
 234
 235                         // If warn on ping enabled and not warned and the difference is sufficient and they didn't answer the last ping...
 236                         if ((Utils->PingWarnTime) && (!s->Warned) && (curtime >= s->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!s->AnsweredLastPing()))
 237                         {
 238                                 /* The server hasnt responded, send a warning to opers */
 239                                 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", s->GetName().c_str(), Utils->PingWarnTime);
 240                                 s->Warned = true;
 241                         }
 242                 }
 243         }
 244 }
 245
 246 void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
 247 {
 248         if (!a)
 249                 return;
 250         for(unsigned int j=0; j < a->servers.size(); j++)
 251         {
 252                 if (Utils->FindServer(a->servers[j]))
 253                 {
 254                         // found something in this block. Should the server fail,
 255                         // we want to start at the start of the list, not in the
 256                         // middle where we left off
 257                         a->position = -1;
 258                         return;
 259                 }
 260         }
 261         if (on_timer && a->position >= 0)
 262                 return;
 263         if (!on_timer && a->position < 0)
 264                 return;
 265
 266         a->position++;
 267         while (a->position < (int)a->servers.size())
 268         {
 269                 Link* x = Utils->FindLink(a->servers[a->position]);
 270                 if (x)
 271                 {
 272                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 273                         ConnectServer(x, a);
 274                         return;
 275                 }
 276                 a->position++;
 277         }
 278         // Autoconnect chain has been fully iterated; start at the beginning on the
 279         // next AutoConnectServers run
 280         a->position = -1;
 281 }
 282
 283 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 284 {
 285         bool ipvalid = true;
 286
 287         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 288         {
 289                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 290                 return;
 291         }
 292
 293         QueryType start_type = DNS_QUERY_A;
 294         start_type = DNS_QUERY_AAAA;
 295         if (strchr(x->IPAddr.c_str(),':'))
 296         {
 297                 in6_addr n;
 298                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 299                         ipvalid = false;
 300         }
 301         else
 302         {
 303                 in_addr n;
 304                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 305                         ipvalid = false;
 306         }
 307
 308         /* Do we already have an IP? If so, no need to resolve it. */
 309         if (ipvalid)
 310         {
 311                 /* Gave a hook, but it wasnt one we know */
 312                 TreeSocket* newsocket = new TreeSocket(Utils, x->IPAddr, x->Port, x->Timeout ? x->Timeout : 10,
 313                         x->Name.c_str(), x->Bind, y, x->Hook);
 314                 if (newsocket->GetFd() > -1)
 315                 {
 316                         /* Handled automatically on success */
 317                 }
 318                 else
 319                 {
 320                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
 321                                 x->Name.c_str(), newsocket->getError().c_str());
 322                         ServerInstance->GlobalCulls.AddItem(newsocket);
 323                 }
 324         }
 325         else
 326         {
 327                 try
 328                 {
 329                         bool cached;
 330                         ServernameResolver* snr = new ServernameResolver(Utils, x->IPAddr, x, cached, start_type, y);
 331                         ServerInstance->AddResolver(snr, cached);
 332                 }
 333                 catch (ModuleException& e)
 334                 {
 335                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason());
 336                         ConnectServer(y, false);
 337                 }
 338         }
 339 }
 340
 341 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 342 {
 343         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 344         {
 345                 Autoconnect* x = *i;
 346                 if (curtime >= x->NextConnectTime)
 347                 {
 348                         x->NextConnectTime = curtime + x->Period;
 349                         ConnectServer(x, true);
 350                 }
 351         }
 352 }
 353
 354 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 355 {
 356         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 357         while (i != Utils->timeoutlist.end())
 358         {
 359                 TreeSocket* s = i->first;
 360                 std::pair<std::string, int> p = i->second;
 361                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 362                 i++;
 363                 if (curtime > s->age + p.second)
 364                 {
 365                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 366                         Utils->timeoutlist.erase(me);
 367                         s->Close();
 368                         ServerInstance->GlobalCulls.AddItem(s);
 369                 }
 370         }
 371 }
 372
 373 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 374 {
 375         // we've already checked if pcnt > 0, so this is safe
 376         TreeServer* found = Utils->FindServerMask(parameters[0]);
 377         if (found)
 378         {
 379                 std::string Version = found->GetVersion();
 380                 user->WriteNumeric(351, "%s :%s",user->nick.c_str(),Version.c_str());
 381                 if (found == Utils->TreeRoot)
 382                 {
 383                         ServerInstance->Config->Send005(user);
 384                 }
 385         }
 386         else
 387         {
 388                 user->WriteNumeric(402, "%s %s :No such server",user->nick.c_str(),parameters[0].c_str());
 389         }
 390         return MOD_RES_DENY;
 391 }
 392
 393 /* This method will attempt to get a message to a remote user.
 394  */
 395 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 396 {
 397         char text[MAXBUF];
 398         va_list argsPtr;
 399
 400         va_start(argsPtr, format);
 401         vsnprintf(text, MAXBUF, format, argsPtr);
 402         va_end(argsPtr);
 403
 404         if (IS_LOCAL(user))
 405                 user->WriteServ("NOTICE %s :%s", user->nick.c_str(), text);
 406         else
 407                 ServerInstance->PI->SendUserNotice(user, text);
 408 }
 409
 410 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 411 {
 412         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 413         {
 414                 Link* x = *i;
 415                 if (InspIRCd::Match(x->Name.c_str(),parameters[0]))
 416                 {
 417                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 418                         {
 419                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 420                                 return MOD_RES_DENY;
 421                         }
 422
 423                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 424                         if (!CheckDupe)
 425                         {
 426                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 427                                 ConnectServer(x);
 428                                 return MOD_RES_DENY;
 429                         }
 430                         else
 431                         {
 432                                 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());
 433                                 return MOD_RES_DENY;
 434                         }
 435                 }
 436         }
 437         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 438         return MOD_RES_DENY;
 439 }
 440
 441 void ModuleSpanningTree::OnGetServerDescription(const std::string &servername,std::string &description)
 442 {
 443         TreeServer* s = Utils->FindServer(servername);
 444         if (s)
 445         {
 446                 description = s->GetDesc();
 447         }
 448 }
 449
 450 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
 451 {
 452         if (IS_LOCAL(source))
 453         {
 454                 parameterlist params;
 455                 params.push_back(dest->uuid);
 456                 params.push_back(channel->name);
 457                 params.push_back(ConvToStr(expiry));
 458                 Utils->DoOneToMany(source->uuid,"INVITE",params);
 459         }
 460 }
 461
 462 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 463 {
 464         // Drop remote events on the floor.
 465         if (!IS_LOCAL(user))
 466                 return;
 467
 468         parameterlist params;
 469         params.push_back(chan->name);
 470         params.push_back(":"+topic);
 471         Utils->DoOneToMany(user->uuid,"TOPIC",params);
 472 }
 473
 474 void ModuleSpanningTree::OnWallops(User* user, const std::string &text)
 475 {
 476         if (IS_LOCAL(user))
 477         {
 478                 parameterlist params;
 479                 params.push_back(":"+text);
 480                 Utils->DoOneToMany(user->uuid,"WALLOPS",params);
 481         }
 482 }
 483
 484 void ModuleSpanningTree::OnUserNotice(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
 485 {
 486         /* Server origin */
 487         if (user == NULL)
 488                 return;
 489
 490         if (target_type == TYPE_USER)
 491         {
 492                 User* d = (User*)dest;
 493                 if (!IS_LOCAL(d) && IS_LOCAL(user))
 494                 {
 495                         parameterlist params;
 496                         params.push_back(d->uuid);
 497                         params.push_back(":"+text);
 498                         Utils->DoOneToOne(user->uuid,"NOTICE",params,d->server);
 499                 }
 500         }
 501         else if (target_type == TYPE_CHANNEL)
 502         {
 503                 if (IS_LOCAL(user))
 504                 {
 505                         Channel *c = (Channel*)dest;
 506                         if (c)
 507                         {
 508                                 std::string cname = c->name;
 509                                 if (status)
 510                                         cname = status + cname;
 511                                 TreeServerList list;
 512                                 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
 513                                 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 514                                 {
 515                                         TreeSocket* Sock = i->second->GetSocket();
 516                                         if (Sock)
 517                                                 Sock->WriteLine(":"+std::string(user->uuid)+" NOTICE "+cname+" :"+text);
 518                                 }
 519                         }
 520                 }
 521         }
 522         else if (target_type == TYPE_SERVER)
 523         {
 524                 if (IS_LOCAL(user))
 525                 {
 526                         char* target = (char*)dest;
 527                         parameterlist par;
 528                         par.push_back(target);
 529                         par.push_back(":"+text);
 530                         Utils->DoOneToMany(user->uuid,"NOTICE",par);
 531                 }
 532         }
 533 }
 534
 535 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
 536 {
 537         /* Server origin */
 538         if (user == NULL)
 539                 return;
 540
 541         if (target_type == TYPE_USER)
 542         {
 543                 // route private messages which are targetted at clients only to the server
 544                 // which needs to receive them
 545                 User* d = (User*)dest;
 546                 if (!IS_LOCAL(d) && (IS_LOCAL(user)))
 547                 {
 548                         parameterlist params;
 549                         params.push_back(d->uuid);
 550                         params.push_back(":"+text);
 551                         Utils->DoOneToOne(user->uuid,"PRIVMSG",params,d->server);
 552                 }
 553         }
 554         else if (target_type == TYPE_CHANNEL)
 555         {
 556                 if (IS_LOCAL(user))
 557                 {
 558                         Channel *c = (Channel*)dest;
 559                         if (c)
 560                         {
 561                                 std::string cname = c->name;
 562                                 if (status)
 563                                         cname = status + cname;
 564                                 TreeServerList list;
 565                                 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
 566                                 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 567                                 {
 568                                         TreeSocket* Sock = i->second->GetSocket();
 569                                         if (Sock)
 570                                                 Sock->WriteLine(":"+std::string(user->uuid)+" PRIVMSG "+cname+" :"+text);
 571                                 }
 572                         }
 573                 }
 574         }
 575         else if (target_type == TYPE_SERVER)
 576         {
 577                 if (IS_LOCAL(user))
 578                 {
 579                         char* target = (char*)dest;
 580                         parameterlist par;
 581                         par.push_back(target);
 582                         par.push_back(":"+text);
 583                         Utils->DoOneToMany(user->uuid,"PRIVMSG",par);
 584                 }
 585         }
 586 }
 587
 588 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 589 {
 590         AutoConnectServers(curtime);
 591         DoPingChecks(curtime);
 592         DoConnectTimeout(curtime);
 593 }
 594
 595 void ModuleSpanningTree::OnUserConnect(LocalUser* user)
 596 {
 597         if (user->quitting)
 598                 return;
 599
 600         parameterlist params;
 601         params.push_back(user->uuid);
 602         params.push_back(ConvToStr(user->age));
 603         params.push_back(user->nick);
 604         params.push_back(user->host);
 605         params.push_back(user->dhost);
 606         params.push_back(user->ident);
 607         params.push_back(user->GetIPString());
 608         params.push_back(ConvToStr(user->signon));
 609         params.push_back("+"+std::string(user->FormatModes(true)));
 610         params.push_back(":"+std::string(user->fullname));
 611         Utils->DoOneToMany(ServerInstance->Config->GetSID(), "UID", params);
 612
 613         for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
 614         {
 615                 ExtensionItem* item = i->first;
 616                 std::string value = item->serialize(FORMAT_NETWORK, user, i->second);
 617                 if (!value.empty())
 618                         ServerInstance->PI->SendMetaData(user, item->key, value);
 619         }
 620
 621         Utils->TreeRoot->SetUserCount(1); // increment by 1
 622 }
 623
 624 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts)
 625 {
 626         // Only do this for local users
 627         if (IS_LOCAL(memb->user))
 628         {
 629                 parameterlist params;
 630                 // set up their permissions and the channel TS with FJOIN.
 631                 // All users are FJOINed now, because a module may specify
 632                 // new joining permissions for the user.
 633                 params.push_back(memb->chan->name);
 634                 params.push_back(ConvToStr(memb->chan->age));
 635                 params.push_back(std::string("+") + memb->chan->ChanModes(true));
 636                 params.push_back(memb->modes+","+std::string(memb->user->uuid));
 637                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
 638         }
 639 }
 640
 641 void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
 642 {
 643         if (user->registered != REG_ALL || !IS_LOCAL(user))
 644                 return;
 645
 646         parameterlist params;
 647         params.push_back(newhost);
 648         Utils->DoOneToMany(user->uuid,"FHOST",params);
 649 }
 650
 651 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 652 {
 653         if (user->registered != REG_ALL || !IS_LOCAL(user))
 654                 return;
 655
 656         parameterlist params;
 657         params.push_back(gecos);
 658         Utils->DoOneToMany(user->uuid,"FNAME",params);
 659 }
 660
 661 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 662 {
 663         // only occurs for local clients
 664         if (user->registered != REG_ALL)
 665                 return;
 666
 667         parameterlist params;
 668         params.push_back(ident);
 669         Utils->DoOneToMany(user->uuid,"FIDENT",params);
 670 }
 671
 672 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 673 {
 674         if (IS_LOCAL(memb->user))
 675         {
 676                 parameterlist params;
 677                 params.push_back(memb->chan->name);
 678                 if (!partmessage.empty())
 679                         params.push_back(":"+partmessage);
 680                 Utils->DoOneToMany(memb->user->uuid,"PART",params);
 681         }
 682 }
 683
 684 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 685 {
 686         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 687         {
 688                 parameterlist params;
 689
 690                 if (oper_message != reason)
 691                 {
 692                         params.push_back(":"+oper_message);
 693                         Utils->DoOneToMany(user->uuid,"OPERQUIT",params);
 694                 }
 695                 params.clear();
 696                 params.push_back(":"+reason);
 697                 Utils->DoOneToMany(user->uuid,"QUIT",params);
 698         }
 699
 700         // Regardless, We need to modify the user Counts..
 701         TreeServer* SourceServer = Utils->FindServer(user->server);
 702         if (SourceServer)
 703         {
 704                 SourceServer->SetUserCount(-1); // decrement by 1
 705         }
 706 }
 707
 708 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 709 {
 710         if (IS_LOCAL(user))
 711         {
 712                 parameterlist params;
 713                 params.push_back(user->nick);
 714
 715                 /** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
 716                  */
 717                 if (irc::string(user->nick.c_str()) != assign(oldnick))
 718                         user->age = ServerInstance->Time();
 719
 720                 params.push_back(ConvToStr(user->age));
 721                 Utils->DoOneToMany(user->uuid,"NICK",params);
 722         }
 723         else if (!loopCall && user->nick == user->uuid)
 724         {
 725                 parameterlist params;
 726                 params.push_back(user->uuid);
 727                 params.push_back(ConvToStr(user->age));
 728                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"SAVE",params);
 729         }
 730 }
 731
 732 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 733 {
 734         parameterlist params;
 735         params.push_back(memb->chan->name);
 736         params.push_back(memb->user->uuid);
 737         params.push_back(":"+reason);
 738         if (IS_LOCAL(source))
 739         {
 740                 Utils->DoOneToMany(source->uuid,"KICK",params);
 741         }
 742         else if (source == ServerInstance->FakeClient)
 743         {
 744                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"KICK",params);
 745         }
 746 }
 747
 748 void ModuleSpanningTree::OnRemoteKill(User* source, User* dest, const std::string &reason, const std::string &operreason)
 749 {
 750         if (!IS_LOCAL(source))
 751                 return; // Only start routing if we're origin.
 752
 753         ServerInstance->OperQuit.set(dest, operreason);
 754         parameterlist params;
 755         params.push_back(":"+operreason);
 756         Utils->DoOneToMany(dest->uuid,"OPERQUIT",params);
 757         params.clear();
 758         params.push_back(dest->uuid);
 759         params.push_back(":"+reason);
 760         Utils->DoOneToMany(source->uuid,"KILL",params);
 761 }
 762
 763 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 764 {
 765         ServerInstance->Logs->Log("remoterehash", DEBUG, "called with param %s", parameter.c_str());
 766
 767         // Send out to other servers
 768         if (!parameter.empty() && parameter[0] != '-')
 769         {
 770                 parameterlist params;
 771                 params.push_back(parameter);
 772                 Utils->DoOneToAllButSender(user ? user->uuid : ServerInstance->Config->GetSID(), "REHASH", params, user ? user->server : ServerInstance->Config->ServerName);
 773         }
 774 }
 775
 776 void ModuleSpanningTree::OnRehash(User* user)
 777 {
 778         // Re-read config stuff
 779         Utils->ReadConfiguration();
 780 }
 781
 782 void ModuleSpanningTree::OnLoadModule(Module* mod)
 783 {
 784         this->RedoConfig(mod);
 785 }
 786
 787 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 788 {
 789         this->RedoConfig(mod);
 790 }
 791
 792 void ModuleSpanningTree::RedoConfig(Module* mod)
 793 {
 794         /* If m_sha256.so is loaded (we use this for HMAC) or any module implementing a BufferedSocket interface is loaded,
 795          * then we need to re-read our config again taking this into account.
 796          */
 797         modulelist* ml = ServerInstance->Modules->FindInterface("BufferedSocketHook");
 798         bool IsBufferSocketModule = false;
 799
 800         /* Did we find any modules? */
 801         if (ml && std::find(ml->begin(), ml->end(), mod) != ml->end())
 802                 IsBufferSocketModule = true;
 803
 804         if (mod->ModuleSourceFile == "m_sha256.so" || IsBufferSocketModule)
 805         {
 806                 Utils->ReadConfiguration();
 807         }
 808 }
 809
 810 // note: the protocol does not allow direct umode +o except
 811 // via NICK with 8 params. sending OPERTYPE infers +o modechange
 812 // locally.
 813 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 814 {
 815         if (IS_LOCAL(user))
 816         {
 817                 parameterlist params;
 818                 params.push_back(opertype);
 819                 Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
 820         }
 821 }
 822
 823 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 824 {
 825         if (!x->IsBurstable() || loopCall)
 826                 return;
 827
 828         char data[MAXBUF];
 829         snprintf(data,MAXBUF,"%s %s %s %lu %lu :%s", x->type.c_str(), x->Displayable(),
 830         ServerInstance->Config->ServerName.c_str(), (unsigned long)x->set_time, (unsigned long)x->duration, x->reason.c_str());
 831         parameterlist params;
 832         params.push_back(data);
 833
 834         if (!user)
 835         {
 836                 /* Server-set lines */
 837                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "ADDLINE", params);
 838         }
 839         else if (IS_LOCAL(user))
 840         {
 841                 /* User-set lines */
 842                 Utils->DoOneToMany(user->uuid, "ADDLINE", params);
 843         }
 844 }
 845
 846 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 847 {
 848         if (x->type == "K")
 849                 return;
 850
 851         char data[MAXBUF];
 852         snprintf(data,MAXBUF,"%s %s", x->type.c_str(), x->Displayable());
 853         parameterlist params;
 854         params.push_back(data);
 855
 856         if (!user)
 857         {
 858                 /* Server-unset lines */
 859                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "DELLINE", params);
 860         }
 861         else if (IS_LOCAL(user))
 862         {
 863                 /* User-unset lines */
 864                 Utils->DoOneToMany(user->uuid, "DELLINE", params);
 865         }
 866 }
 867
 868 void ModuleSpanningTree::OnMode(User* user, void* dest, int target_type, const parameterlist &text, const std::vector<TranslateType> &translate)
 869 {
 870         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 871         {
 872                 parameterlist params;
 873                 std::string command;
 874                 std::string output_text;
 875
 876                 ServerInstance->Parser->TranslateUIDs(translate, text, output_text);
 877
 878                 if (target_type == TYPE_USER)
 879                 {
 880                         User* u = (User*)dest;
 881                         params.push_back(u->uuid);
 882                         params.push_back(output_text);
 883                         command = "MODE";
 884                 }
 885                 else
 886                 {
 887                         Channel* c = (Channel*)dest;
 888                         params.push_back(c->name);
 889                         params.push_back(ConvToStr(c->age));
 890                         params.push_back(output_text);
 891                         command = "FMODE";
 892                 }
 893
 894                 Utils->DoOneToMany(user->uuid, command, params);
 895         }
 896 }
 897
 898 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 899 {
 900         if (IS_LOCAL(user))
 901         {
 902                 if (awaymsg.empty())
 903                 {
 904                         parameterlist params;
 905                         Utils->DoOneToMany(user->uuid,"AWAY",params);
 906                 }
 907                 else
 908                 {
 909                         parameterlist params;
 910                         params.push_back(ConvToStr(user->awaytime));
 911                         params.push_back(":" + awaymsg);
 912                         Utils->DoOneToMany(user->uuid,"AWAY",params);
 913                 }
 914         }
 915
 916         return MOD_RES_PASSTHRU;
 917 }
 918
 919 void ModuleSpanningTree::ProtoSendMode(void* opaque, TargetTypeFlags target_type, void* target, const parameterlist &modeline, const std::vector<TranslateType> &translate)
 920 {
 921         TreeSocket* s = (TreeSocket*)opaque;
 922         std::string output_text;
 923
 924         ServerInstance->Parser->TranslateUIDs(translate, modeline, output_text);
 925
 926         if (target)
 927         {
 928                 if (target_type == TYPE_USER)
 929                 {
 930                         User* u = (User*)target;
 931                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" MODE "+u->uuid+" "+output_text);
 932                 }
 933                 else if (target_type == TYPE_CHANNEL)
 934                 {
 935                         Channel* c = (Channel*)target;
 936                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+output_text);
 937                 }
 938         }
 939 }
 940
 941 void ModuleSpanningTree::ProtoSendMetaData(void* opaque, Extensible* target, const std::string &extname, const std::string &extdata)
 942 {
 943         TreeSocket* s = static_cast<TreeSocket*>(opaque);
 944         User* u = dynamic_cast<User*>(target);
 945         Channel* c = dynamic_cast<Channel*>(target);
 946         if (u)
 947                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA "+u->uuid+" "+extname+" :"+extdata);
 948         else if (c)
 949                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA "+c->name+" "+extname+" :"+extdata);
 950         else if (!target)
 951                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA * "+extname+" :"+extdata);
 952 }
 953
 954 CullResult ModuleSpanningTree::cull()
 955 {
 956         Utils->cull();
 957         ServerInstance->Timers->DelTimer(RefreshTimer);
 958         ServerInstance->Modules->DoneWithInterface("BufferedSocketHook");
 959         return this->Module::cull();
 960 }
 961
 962 ModuleSpanningTree::~ModuleSpanningTree()
 963 {
 964         delete ServerInstance->PI;
 965         ServerInstance->PI = new ProtocolInterface;
 966
 967         /* This will also free the listeners */
 968         delete Utils;
 969
 970         delete command_rconnect;
 971         delete command_rsquit;
 972 }
 973
 974 Version ModuleSpanningTree::GetVersion()
 975 {
 976         return Version("Allows servers to be linked", VF_VENDOR);
 977 }
 978
 979 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 980  * so that any activity it sees is FINAL, e.g. we arent going to send out
 981  * a NICK message before m_cloaking has finished putting the +x on the user,
 982  * etc etc.
 983  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 984  * the module call queue.
 985  */
 986 void ModuleSpanningTree::Prioritize()
 987 {
 988         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
 989 }
 990
 991 MODULE_INIT(ModuleSpanningTree)