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_OnChangeLocalUserHost, 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
  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 ((d->GetFd() < 0) && (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 ((d->GetFd() < 0) && (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(User* 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         Utils->TreeRoot->SetUserCount(1); // increment by 1
 614 }
 615
 616 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts)
 617 {
 618         // Only do this for local users
 619         if (IS_LOCAL(memb->user))
 620         {
 621                 parameterlist params;
 622                 // set up their permissions and the channel TS with FJOIN.
 623                 // All users are FJOINed now, because a module may specify
 624                 // new joining permissions for the user.
 625                 params.push_back(memb->chan->name);
 626                 params.push_back(ConvToStr(memb->chan->age));
 627                 params.push_back(std::string("+") + memb->chan->ChanModes(true));
 628                 params.push_back(memb->modes+","+std::string(memb->user->uuid));
 629                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
 630         }
 631 }
 632
 633 ModResult ModuleSpanningTree::OnChangeLocalUserHost(User* user, const std::string &newhost)
 634 {
 635         if (user->registered != REG_ALL)
 636                 return MOD_RES_PASSTHRU;
 637
 638         parameterlist params;
 639         params.push_back(newhost);
 640         Utils->DoOneToMany(user->uuid,"FHOST",params);
 641         return MOD_RES_PASSTHRU;
 642 }
 643
 644 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 645 {
 646         // only occurs for local clients
 647         if (user->registered != REG_ALL)
 648                 return;
 649
 650         parameterlist params;
 651         params.push_back(gecos);
 652         Utils->DoOneToMany(user->uuid,"FNAME",params);
 653 }
 654
 655 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 656 {
 657         // only occurs for local clients
 658         if (user->registered != REG_ALL)
 659                 return;
 660
 661         parameterlist params;
 662         params.push_back(ident);
 663         Utils->DoOneToMany(user->uuid,"FIDENT",params);
 664 }
 665
 666 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 667 {
 668         if (IS_LOCAL(memb->user))
 669         {
 670                 parameterlist params;
 671                 params.push_back(memb->chan->name);
 672                 if (!partmessage.empty())
 673                         params.push_back(":"+partmessage);
 674                 Utils->DoOneToMany(memb->user->uuid,"PART",params);
 675         }
 676 }
 677
 678 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 679 {
 680         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 681         {
 682                 parameterlist params;
 683
 684                 if (oper_message != reason)
 685                 {
 686                         params.push_back(":"+oper_message);
 687                         Utils->DoOneToMany(user->uuid,"OPERQUIT",params);
 688                 }
 689                 params.clear();
 690                 params.push_back(":"+reason);
 691                 Utils->DoOneToMany(user->uuid,"QUIT",params);
 692         }
 693
 694         // Regardless, We need to modify the user Counts..
 695         TreeServer* SourceServer = Utils->FindServer(user->server);
 696         if (SourceServer)
 697         {
 698                 SourceServer->SetUserCount(-1); // decrement by 1
 699         }
 700 }
 701
 702 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 703 {
 704         if (IS_LOCAL(user))
 705         {
 706                 parameterlist params;
 707                 params.push_back(user->nick);
 708
 709                 /** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
 710                  */
 711                 if (irc::string(user->nick.c_str()) != assign(oldnick))
 712                         user->age = ServerInstance->Time();
 713
 714                 params.push_back(ConvToStr(user->age));
 715                 Utils->DoOneToMany(user->uuid,"NICK",params);
 716         }
 717         else if (!loopCall && user->nick == user->uuid)
 718         {
 719                 parameterlist params;
 720                 params.push_back(user->uuid);
 721                 params.push_back(ConvToStr(user->age));
 722                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"SAVE",params);
 723         }
 724 }
 725
 726 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 727 {
 728         parameterlist params;
 729         params.push_back(memb->chan->name);
 730         params.push_back(memb->user->uuid);
 731         params.push_back(":"+reason);
 732         if (IS_LOCAL(source))
 733         {
 734                 Utils->DoOneToMany(source->uuid,"KICK",params);
 735         }
 736         else if (IS_SERVER(source) && source != Utils->ServerUser)
 737         {
 738                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"KICK",params);
 739         }
 740 }
 741
 742 void ModuleSpanningTree::OnRemoteKill(User* source, User* dest, const std::string &reason, const std::string &operreason)
 743 {
 744         if (!IS_LOCAL(source))
 745                 return; // Only start routing if we're origin.
 746
 747         ServerInstance->OperQuit.set(dest, operreason);
 748         parameterlist params;
 749         params.push_back(":"+operreason);
 750         Utils->DoOneToMany(dest->uuid,"OPERQUIT",params);
 751         params.clear();
 752         params.push_back(dest->uuid);
 753         params.push_back(":"+reason);
 754         Utils->DoOneToMany(source->uuid,"KILL",params);
 755 }
 756
 757 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 758 {
 759         ServerInstance->Logs->Log("remoterehash", DEBUG, "called with param %s", parameter.c_str());
 760
 761         // Send out to other servers
 762         if (!parameter.empty() && parameter[0] != '-')
 763         {
 764                 parameterlist params;
 765                 params.push_back(parameter);
 766                 Utils->DoOneToAllButSender(user ? user->uuid : ServerInstance->Config->GetSID(), "REHASH", params, user ? user->server : ServerInstance->Config->ServerName);
 767         }
 768 }
 769
 770 void ModuleSpanningTree::OnRehash(User* user)
 771 {
 772         // Re-read config stuff
 773         Utils->ReadConfiguration(true);
 774 }
 775
 776 void ModuleSpanningTree::OnLoadModule(Module* mod)
 777 {
 778         this->RedoConfig(mod);
 779 }
 780
 781 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 782 {
 783         this->RedoConfig(mod);
 784 }
 785
 786 void ModuleSpanningTree::RedoConfig(Module* mod)
 787 {
 788         /* If m_sha256.so is loaded (we use this for HMAC) or any module implementing a BufferedSocket interface is loaded,
 789          * then we need to re-read our config again taking this into account.
 790          */
 791         modulelist* ml = ServerInstance->Modules->FindInterface("BufferedSocketHook");
 792         bool IsBufferSocketModule = false;
 793
 794         /* Did we find any modules? */
 795         if (ml && std::find(ml->begin(), ml->end(), mod) != ml->end())
 796                 IsBufferSocketModule = true;
 797
 798         if (mod->ModuleSourceFile == "m_sha256.so" || IsBufferSocketModule)
 799         {
 800                 Utils->ReadConfiguration(true);
 801         }
 802 }
 803
 804 // note: the protocol does not allow direct umode +o except
 805 // via NICK with 8 params. sending OPERTYPE infers +o modechange
 806 // locally.
 807 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 808 {
 809         if (IS_LOCAL(user))
 810         {
 811                 parameterlist params;
 812                 params.push_back(opertype);
 813                 Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
 814         }
 815 }
 816
 817 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 818 {
 819         if (!x->IsBurstable() || loopCall)
 820                 return;
 821
 822         char data[MAXBUF];
 823         snprintf(data,MAXBUF,"%s %s %s %lu %lu :%s", x->type.c_str(), x->Displayable(),
 824         ServerInstance->Config->ServerName.c_str(), (unsigned long)x->set_time, (unsigned long)x->duration, x->reason.c_str());
 825         parameterlist params;
 826         params.push_back(data);
 827
 828         if (!user)
 829         {
 830                 /* Server-set lines */
 831                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "ADDLINE", params);
 832         }
 833         else if (IS_LOCAL(user))
 834         {
 835                 /* User-set lines */
 836                 Utils->DoOneToMany(user->uuid, "ADDLINE", params);
 837         }
 838 }
 839
 840 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 841 {
 842         if (x->type == "K")
 843                 return;
 844
 845         char data[MAXBUF];
 846         snprintf(data,MAXBUF,"%s %s", x->type.c_str(), x->Displayable());
 847         parameterlist params;
 848         params.push_back(data);
 849
 850         if (!user)
 851         {
 852                 /* Server-unset lines */
 853                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "DELLINE", params);
 854         }
 855         else if (IS_LOCAL(user))
 856         {
 857                 /* User-unset lines */
 858                 Utils->DoOneToMany(user->uuid, "DELLINE", params);
 859         }
 860 }
 861
 862 void ModuleSpanningTree::OnMode(User* user, void* dest, int target_type, const parameterlist &text, const std::vector<TranslateType> &translate)
 863 {
 864         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 865         {
 866                 parameterlist params;
 867                 std::string command;
 868                 std::string output_text;
 869
 870                 ServerInstance->Parser->TranslateUIDs(translate, text, output_text);
 871
 872                 if (target_type == TYPE_USER)
 873                 {
 874                         User* u = (User*)dest;
 875                         params.push_back(u->uuid);
 876                         params.push_back(output_text);
 877                         command = "MODE";
 878                 }
 879                 else
 880                 {
 881                         Channel* c = (Channel*)dest;
 882                         params.push_back(c->name);
 883                         params.push_back(ConvToStr(c->age));
 884                         params.push_back(output_text);
 885                         command = "FMODE";
 886                 }
 887
 888                 Utils->DoOneToMany(user->uuid, command, params);
 889         }
 890 }
 891
 892 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 893 {
 894         if (IS_LOCAL(user))
 895         {
 896                 if (awaymsg.empty())
 897                 {
 898                         parameterlist params;
 899                         Utils->DoOneToMany(user->uuid,"AWAY",params);
 900                 }
 901                 else
 902                 {
 903                         parameterlist params;
 904                         params.push_back(ConvToStr(user->awaytime));
 905                         params.push_back(":" + awaymsg);
 906                         Utils->DoOneToMany(user->uuid,"AWAY",params);
 907                 }
 908         }
 909
 910         return MOD_RES_PASSTHRU;
 911 }
 912
 913 void ModuleSpanningTree::ProtoSendMode(void* opaque, TargetTypeFlags target_type, void* target, const parameterlist &modeline, const std::vector<TranslateType> &translate)
 914 {
 915         TreeSocket* s = (TreeSocket*)opaque;
 916         std::string output_text;
 917
 918         ServerInstance->Parser->TranslateUIDs(translate, modeline, output_text);
 919
 920         if (target)
 921         {
 922                 if (target_type == TYPE_USER)
 923                 {
 924                         User* u = (User*)target;
 925                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" MODE "+u->uuid+" "+output_text);
 926                 }
 927                 else if (target_type == TYPE_CHANNEL)
 928                 {
 929                         Channel* c = (Channel*)target;
 930                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+output_text);
 931                 }
 932         }
 933 }
 934
 935 void ModuleSpanningTree::ProtoSendMetaData(void* opaque, Extensible* target, const std::string &extname, const std::string &extdata)
 936 {
 937         TreeSocket* s = static_cast<TreeSocket*>(opaque);
 938         User* u = dynamic_cast<User*>(target);
 939         Channel* c = dynamic_cast<Channel*>(target);
 940         if (u)
 941                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA "+u->uuid+" "+extname+" :"+extdata);
 942         else if (c)
 943                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA "+c->name+" "+extname+" :"+extdata);
 944         else if (!target)
 945                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA * "+extname+" :"+extdata);
 946 }
 947
 948 CullResult ModuleSpanningTree::cull()
 949 {
 950         Utils->cull();
 951         ServerInstance->Timers->DelTimer(RefreshTimer);
 952         ServerInstance->Modules->DoneWithInterface("BufferedSocketHook");
 953         return this->Module::cull();
 954 }
 955
 956 ModuleSpanningTree::~ModuleSpanningTree()
 957 {
 958         delete ServerInstance->PI;
 959         ServerInstance->PI = new ProtocolInterface;
 960
 961         /* This will also free the listeners */
 962         delete Utils;
 963
 964         delete command_rconnect;
 965         delete command_rsquit;
 966 }
 967
 968 Version ModuleSpanningTree::GetVersion()
 969 {
 970         return Version("Allows servers to be linked", VF_VENDOR);
 971 }
 972
 973 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 974  * so that any activity it sees is FINAL, e.g. we arent going to send out
 975  * a NICK message before m_cloaking has finished putting the +x on the user,
 976  * etc etc.
 977  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 978  * the module call queue.
 979  */
 980 void ModuleSpanningTree::Prioritize()
 981 {
 982         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
 983 }
 984
 985 MODULE_INIT(ModuleSpanningTree)