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 #include "../transport.h"
  20
  21 #include "cachetimer.h"
  22 #include "resolvers.h"
  23 #include "main.h"
  24 #include "utils.h"
  25 #include "treeserver.h"
  26 #include "link.h"
  27 #include "treesocket.h"
  28 #include "rconnect.h"
  29 #include "rsquit.h"
  30 #include "protocolinterface.h"
  31
  32 /* $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 */
  33
  34 ModuleSpanningTree::ModuleSpanningTree()
  35         : max_local(0), max_global(0)
  36 {
  37         ServerInstance->Modules->UseInterface("BufferedSocketHook");
  38         Utils = new SpanningTreeUtilities(this);
  39         command_rconnect = new CommandRConnect(this, Utils);
  40         ServerInstance->AddCommand(command_rconnect);
  41         command_rsquit = new CommandRSQuit(this, Utils);
  42         ServerInstance->AddCommand(command_rsquit);
  43         RefreshTimer = new CacheRefreshTimer(Utils);
  44         ServerInstance->Timers->AddTimer(RefreshTimer);
  45
  46         Implementation eventlist[] =
  47         {
  48                 I_OnPreCommand, I_OnGetServerDescription, I_OnUserInvite, I_OnPostTopicChange,
  49                 I_OnWallops, I_OnUserNotice, I_OnUserMessage, I_OnBackgroundTimer, I_OnUserJoin,
  50                 I_OnChangeLocalUserHost, I_OnChangeName, I_OnChangeIdent, I_OnUserPart, I_OnUnloadModule,
  51                 I_OnUserQuit, I_OnUserPostNick, I_OnUserKick, I_OnRemoteKill, I_OnRehash, I_OnPreRehash,
  52                 I_OnOper, I_OnAddLine, I_OnDelLine, I_OnMode, I_OnLoadModule, I_OnStats, I_OnEvent,
  53                 I_OnSetAway, I_OnPostCommand, I_OnUserConnect
  54         };
  55         ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
  56
  57         delete ServerInstance->PI;
  58         ServerInstance->PI = new SpanningTreeProtocolInterface(this, Utils);
  59         loopCall = false;
  60
  61         // update our local user count
  62         Utils->TreeRoot->SetUserCount(ServerInstance->Users->local_users.size());
  63 }
  64
  65 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
  66 {
  67         std::string Parent = Utils->TreeRoot->GetName();
  68         if (Current->GetParent())
  69         {
  70                 Parent = Current->GetParent()->GetName();
  71         }
  72         for (unsigned int q = 0; q < Current->ChildCount(); q++)
  73         {
  74                 if ((Current->GetChild(q)->Hidden) || ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName().c_str()))))
  75                 {
  76                         if (IS_OPER(user))
  77                         {
  78                                  ShowLinks(Current->GetChild(q),user,hops+1);
  79                         }
  80                 }
  81                 else
  82                 {
  83                         ShowLinks(Current->GetChild(q),user,hops+1);
  84                 }
  85         }
  86         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
  87         if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName().c_str())) && (!IS_OPER(user)))
  88                 return;
  89         /* Or if the server is hidden and they're not an oper */
  90         else if ((Current->Hidden) && (!IS_OPER(user)))
  91                 return;
  92
  93         user->WriteNumeric(364, "%s %s %s :%d %s",      user->nick.c_str(),Current->GetName().c_str(),
  94                         (Utils->FlatLinks && (!IS_OPER(user))) ? ServerInstance->Config->ServerName : Parent.c_str(),
  95                         (Utils->FlatLinks && (!IS_OPER(user))) ? 0 : hops,
  96                         Current->GetDesc().c_str());
  97 }
  98
  99 int ModuleSpanningTree::CountLocalServs()
 100 {
 101         return Utils->TreeRoot->ChildCount();
 102 }
 103
 104 int ModuleSpanningTree::CountServs()
 105 {
 106         return Utils->serverlist.size();
 107 }
 108
 109 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 110 {
 111         ShowLinks(Utils->TreeRoot,user,0);
 112         user->WriteNumeric(365, "%s * :End of /LINKS list.",user->nick.c_str());
 113         return;
 114 }
 115
 116 void ModuleSpanningTree::HandleLusers(const std::vector<std::string>& parameters, User* user)
 117 {
 118         unsigned int n_users = ServerInstance->Users->UserCount();
 119
 120         /* Only update these when someone wants to see them, more efficient */
 121         if ((unsigned int)ServerInstance->Users->LocalUserCount() > max_local)
 122                 max_local = ServerInstance->Users->LocalUserCount();
 123         if (n_users > max_global)
 124                 max_global = n_users;
 125
 126         unsigned int ulined_count = 0;
 127         unsigned int ulined_local_count = 0;
 128
 129         /* If ulined are hidden and we're not an oper, count the number of ulined servers hidden,
 130          * locally and globally (locally means directly connected to us)
 131          */
 132         if ((Utils->HideULines) && (!IS_OPER(user)))
 133         {
 134                 for (server_hash::iterator q = Utils->serverlist.begin(); q != Utils->serverlist.end(); q++)
 135                 {
 136                         if (ServerInstance->ULine(q->second->GetName().c_str()))
 137                         {
 138                                 ulined_count++;
 139                                 if (q->second->GetParent() == Utils->TreeRoot)
 140                                         ulined_local_count++;
 141                         }
 142                 }
 143         }
 144         user->WriteNumeric(251, "%s :There are %d users and %d invisible on %d servers",user->nick.c_str(),
 145                         n_users-ServerInstance->Users->ModeCount('i'),
 146                         ServerInstance->Users->ModeCount('i'),
 147                         ulined_count ? this->CountServs() - ulined_count : this->CountServs());
 148
 149         if (ServerInstance->Users->OperCount())
 150                 user->WriteNumeric(252, "%s %d :operator(s) online",user->nick.c_str(),ServerInstance->Users->OperCount());
 151
 152         if (ServerInstance->Users->UnregisteredUserCount())
 153                 user->WriteNumeric(253, "%s %d :unknown connections",user->nick.c_str(),ServerInstance->Users->UnregisteredUserCount());
 154
 155         if (ServerInstance->ChannelCount())
 156                 user->WriteNumeric(254, "%s %ld :channels formed",user->nick.c_str(),ServerInstance->ChannelCount());
 157
 158         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());
 159         user->WriteNumeric(265, "%s :Current Local Users: %d  Max: %d",user->nick.c_str(),ServerInstance->Users->LocalUserCount(),max_local);
 160         user->WriteNumeric(266, "%s :Current Global Users: %d  Max: %d",user->nick.c_str(),n_users,max_global);
 161         return;
 162 }
 163
 164 std::string ModuleSpanningTree::TimeToStr(time_t secs)
 165 {
 166         time_t mins_up = secs / 60;
 167         time_t hours_up = mins_up / 60;
 168         time_t days_up = hours_up / 24;
 169         secs = secs % 60;
 170         mins_up = mins_up % 60;
 171         hours_up = hours_up % 24;
 172         return ((days_up ? (ConvToStr(days_up) + "d") : std::string(""))
 173                         + (hours_up ? (ConvToStr(hours_up) + "h") : std::string(""))
 174                         + (mins_up ? (ConvToStr(mins_up) + "m") : std::string(""))
 175                         + ConvToStr(secs) + "s");
 176 }
 177
 178 void ModuleSpanningTree::DoPingChecks(time_t curtime)
 179 {
 180         /*
 181          * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
 182          * This prevents lost REMOTECONNECT notices
 183          */
 184         timeval t;
 185         gettimeofday(&t, NULL);
 186         long ts = (t.tv_sec * 1000) + (t.tv_usec / 1000);
 187
 188         for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
 189         {
 190                 TreeServer *s = i->second;
 191
 192                 // Fix for bug #792, do not ping servers that are not connected yet!
 193                 // Remote servers have Socket == NULL and local connected servers have
 194                 // Socket->LinkState == CONNECTED
 195                 if (s->GetSocket() && s->GetSocket()->GetLinkState() != CONNECTED)
 196                         continue;
 197
 198                 // Now do PING checks on all servers
 199                 TreeServer *mts = Utils->BestRouteTo(s->GetID());
 200
 201                 if (mts)
 202                 {
 203                         // Only ping if this server needs one
 204                         if (curtime >= s->NextPingTime())
 205                         {
 206                                 // And if they answered the last
 207                                 if (s->AnsweredLastPing())
 208                                 {
 209                                         // They did, send a ping to them
 210                                         s->SetNextPingTime(curtime + Utils->PingFreq);
 211                                         TreeSocket *tsock = mts->GetSocket();
 212
 213                                         // ... if we can find a proper route to them
 214                                         if (tsock)
 215                                         {
 216                                                 tsock->WriteLine(std::string(":") + ServerInstance->Config->GetSID() + " PING " +
 217                                                                 ServerInstance->Config->GetSID() + " " + s->GetID());
 218                                                 s->LastPingMsec = ts;
 219                                         }
 220                                 }
 221                                 else
 222                                 {
 223                                         // They didn't answer the last ping, if they are locally connected, get rid of them.
 224                                         TreeSocket *sock = s->GetSocket();
 225                                         if (sock)
 226                                         {
 227                                                 sock->SendError("Ping timeout");
 228                                                 sock->Squit(s,"Ping timeout");
 229                                                 ServerInstance->SE->DelFd(sock);
 230                                                 sock->Close();
 231                                                 return;
 232                                         }
 233                                 }
 234                         }
 235
 236                         // If warn on ping enabled and not warned and the difference is sufficient and they didn't answer the last ping...
 237                         if ((Utils->PingWarnTime) && (!s->Warned) && (curtime >= s->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!s->AnsweredLastPing()))
 238                         {
 239                                 /* The server hasnt responded, send a warning to opers */
 240                                 ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", s->GetName().c_str(), Utils->PingWarnTime);
 241                                 s->Warned = true;
 242                         }
 243                 }
 244         }
 245 }
 246
 247 void ModuleSpanningTree::ConnectServer(Autoconnect* y)
 248 {
 249         if (!y)
 250                 return;
 251         y->position++;
 252         while (y->position < (int)y->servers.size())
 253         {
 254                 Link* x = Utils->FindLink(y->servers[y->position]);
 255                 if (x)
 256                 {
 257                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 258                         ConnectServer(x, y);
 259                         return;
 260                 }
 261                 y->position++;
 262         }
 263         // Autoconnect chain has been fully iterated; start at the beginning on the
 264         // next AutoConnectServers run
 265         y->position = -1;
 266 }
 267
 268 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 269 {
 270         bool ipvalid = true;
 271
 272         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 273         {
 274                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 275                 return;
 276         }
 277
 278         QueryType start_type = DNS_QUERY_A;
 279         start_type = DNS_QUERY_AAAA;
 280         if (strchr(x->IPAddr.c_str(),':'))
 281         {
 282                 in6_addr n;
 283                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 284                         ipvalid = false;
 285         }
 286         else
 287         {
 288                 in_addr n;
 289                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 290                         ipvalid = false;
 291         }
 292
 293         /* Do we already have an IP? If so, no need to resolve it. */
 294         if (ipvalid)
 295         {
 296                 /* Gave a hook, but it wasnt one we know */
 297                 if ((!x->Hook.empty()) && (Utils->hooks.find(x->Hook.c_str()) == Utils->hooks.end()))
 298                         return;
 299                 TreeSocket* newsocket = new TreeSocket(Utils, x->IPAddr,x->Port, x->Timeout ? x->Timeout : 10,x->Name.c_str(), x->Bind, y, x->Hook.empty() ? NULL : Utils->hooks[x->Hook.c_str()]);
 300                 if (newsocket->GetFd() > -1)
 301                 {
 302                         /* Handled automatically on success */
 303                 }
 304                 else
 305                 {
 306                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
 307                         ServerInstance->GlobalCulls.AddItem(newsocket);
 308                         ConnectServer(y);
 309                 }
 310         }
 311         else
 312         {
 313                 try
 314                 {
 315                         bool cached;
 316                         ServernameResolver* snr = new ServernameResolver((Module*)this, Utils, x->IPAddr, x, cached, start_type, y);
 317                         ServerInstance->AddResolver(snr, cached);
 318                 }
 319                 catch (ModuleException& e)
 320                 {
 321                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason());
 322                         ConnectServer(y);
 323                 }
 324         }
 325 }
 326
 327 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 328 {
 329         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 330         {
 331                 Autoconnect* x = *i;
 332                 if (curtime >= x->NextConnectTime)
 333                 {
 334                         x->NextConnectTime = curtime + x->Period;
 335                         for(unsigned int j=0; j < x->servers.size(); j++)
 336                         {
 337                                 if (Utils->FindServer(x->servers[j]))
 338                                 {
 339                                         // found something in this block. Should the server fail,
 340                                         // we want to start at the start of the list, not in the
 341                                         // middle where we left off
 342                                         x->position = -1;
 343                                         goto dupe_found; // next autoconnect block
 344                                 }
 345                         }
 346                         // only start a new chain if we aren't running
 347                         if (x->position == -1)
 348                                 ConnectServer(x);
 349                 }
 350 dupe_found:;
 351         }
 352 }
 353
 354 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 355 {
 356         std::vector<Autoconnect*> failovers;
 357         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 358         while (i != Utils->timeoutlist.end())
 359         {
 360                 TreeSocket* s = i->first;
 361                 std::pair<std::string, int> p = i->second;
 362                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 363                 i++;
 364                 if (curtime > s->age + p.second)
 365                 {
 366                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 367                         if (s->myautoconnect)
 368                                 failovers.push_back(s->myautoconnect);
 369                         Utils->timeoutlist.erase(me);
 370                         s->Close();
 371                 }
 372         }
 373         for(unsigned int j=0; j < failovers.size(); j++)
 374         {
 375                 if (failovers[j]->position >= 0)
 376                         ConnectServer(failovers[j]);
 377         }
 378 }
 379
 380 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 381 {
 382         // we've already checked if pcnt > 0, so this is safe
 383         TreeServer* found = Utils->FindServerMask(parameters[0]);
 384         if (found)
 385         {
 386                 std::string Version = found->GetVersion();
 387                 user->WriteNumeric(351, "%s :%s",user->nick.c_str(),Version.c_str());
 388                 if (found == Utils->TreeRoot)
 389                 {
 390                         ServerInstance->Config->Send005(user);
 391                 }
 392         }
 393         else
 394         {
 395                 user->WriteNumeric(402, "%s %s :No such server",user->nick.c_str(),parameters[0].c_str());
 396         }
 397         return MOD_RES_DENY;
 398 }
 399
 400 /* This method will attempt to get a message to a remote user.
 401  */
 402 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 403 {
 404         char text[MAXBUF];
 405         va_list argsPtr;
 406
 407         va_start(argsPtr, format);
 408         vsnprintf(text, MAXBUF, format, argsPtr);
 409         va_end(argsPtr);
 410
 411         if (IS_LOCAL(user))
 412                 user->WriteServ("NOTICE %s :%s", user->nick.c_str(), text);
 413         else
 414                 ServerInstance->PI->SendUserNotice(user, text);
 415 }
 416
 417 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 418 {
 419         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 420         {
 421                 Link* x = *i;
 422                 if (InspIRCd::Match(x->Name.c_str(),parameters[0]))
 423                 {
 424                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 425                         {
 426                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 427                                 return MOD_RES_DENY;
 428                         }
 429
 430                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 431                         if (!CheckDupe)
 432                         {
 433                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 434                                 ConnectServer(x);
 435                                 return MOD_RES_DENY;
 436                         }
 437                         else
 438                         {
 439                                 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());
 440                                 return MOD_RES_DENY;
 441                         }
 442                 }
 443         }
 444         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 445         return MOD_RES_DENY;
 446 }
 447
 448 void ModuleSpanningTree::OnGetServerDescription(const std::string &servername,std::string &description)
 449 {
 450         TreeServer* s = Utils->FindServer(servername);
 451         if (s)
 452         {
 453                 description = s->GetDesc();
 454         }
 455 }
 456
 457 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
 458 {
 459         if (IS_LOCAL(source))
 460         {
 461                 parameterlist params;
 462                 params.push_back(dest->uuid);
 463                 params.push_back(channel->name);
 464                 params.push_back(ConvToStr(expiry));
 465                 Utils->DoOneToMany(source->uuid,"INVITE",params);
 466         }
 467 }
 468
 469 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 470 {
 471         // Drop remote events on the floor.
 472         if (!IS_LOCAL(user))
 473                 return;
 474
 475         parameterlist params;
 476         params.push_back(chan->name);
 477         params.push_back(":"+topic);
 478         Utils->DoOneToMany(user->uuid,"TOPIC",params);
 479 }
 480
 481 void ModuleSpanningTree::OnWallops(User* user, const std::string &text)
 482 {
 483         if (IS_LOCAL(user))
 484         {
 485                 parameterlist params;
 486                 params.push_back(":"+text);
 487                 Utils->DoOneToMany(user->uuid,"WALLOPS",params);
 488         }
 489 }
 490
 491 void ModuleSpanningTree::OnUserNotice(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
 492 {
 493         /* Server origin */
 494         if (user == NULL)
 495                 return;
 496
 497         if (target_type == TYPE_USER)
 498         {
 499                 User* d = (User*)dest;
 500                 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
 501                 {
 502                         parameterlist params;
 503                         params.push_back(d->uuid);
 504                         params.push_back(":"+text);
 505                         Utils->DoOneToOne(user->uuid,"NOTICE",params,d->server);
 506                 }
 507         }
 508         else if (target_type == TYPE_CHANNEL)
 509         {
 510                 if (IS_LOCAL(user))
 511                 {
 512                         Channel *c = (Channel*)dest;
 513                         if (c)
 514                         {
 515                                 std::string cname = c->name;
 516                                 if (status)
 517                                         cname = status + cname;
 518                                 TreeServerList list;
 519                                 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
 520                                 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 521                                 {
 522                                         TreeSocket* Sock = i->second->GetSocket();
 523                                         if (Sock)
 524                                                 Sock->WriteLine(":"+std::string(user->uuid)+" NOTICE "+cname+" :"+text);
 525                                 }
 526                         }
 527                 }
 528         }
 529         else if (target_type == TYPE_SERVER)
 530         {
 531                 if (IS_LOCAL(user))
 532                 {
 533                         char* target = (char*)dest;
 534                         parameterlist par;
 535                         par.push_back(target);
 536                         par.push_back(":"+text);
 537                         Utils->DoOneToMany(user->uuid,"NOTICE",par);
 538                 }
 539         }
 540 }
 541
 542 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
 543 {
 544         /* Server origin */
 545         if (user == NULL)
 546                 return;
 547
 548         if (target_type == TYPE_USER)
 549         {
 550                 // route private messages which are targetted at clients only to the server
 551                 // which needs to receive them
 552                 User* d = (User*)dest;
 553                 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
 554                 {
 555                         parameterlist params;
 556                         params.push_back(d->uuid);
 557                         params.push_back(":"+text);
 558                         Utils->DoOneToOne(user->uuid,"PRIVMSG",params,d->server);
 559                 }
 560         }
 561         else if (target_type == TYPE_CHANNEL)
 562         {
 563                 if (IS_LOCAL(user))
 564                 {
 565                         Channel *c = (Channel*)dest;
 566                         if (c)
 567                         {
 568                                 std::string cname = c->name;
 569                                 if (status)
 570                                         cname = status + cname;
 571                                 TreeServerList list;
 572                                 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
 573                                 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 574                                 {
 575                                         TreeSocket* Sock = i->second->GetSocket();
 576                                         if (Sock)
 577                                                 Sock->WriteLine(":"+std::string(user->uuid)+" PRIVMSG "+cname+" :"+text);
 578                                 }
 579                         }
 580                 }
 581         }
 582         else if (target_type == TYPE_SERVER)
 583         {
 584                 if (IS_LOCAL(user))
 585                 {
 586                         char* target = (char*)dest;
 587                         parameterlist par;
 588                         par.push_back(target);
 589                         par.push_back(":"+text);
 590                         Utils->DoOneToMany(user->uuid,"PRIVMSG",par);
 591                 }
 592         }
 593 }
 594
 595 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 596 {
 597         AutoConnectServers(curtime);
 598         DoPingChecks(curtime);
 599         DoConnectTimeout(curtime);
 600 }
 601
 602 void ModuleSpanningTree::OnUserConnect(User* user)
 603 {
 604         if (user->quitting)
 605                 return;
 606
 607         parameterlist params;
 608         params.push_back(user->uuid);
 609         params.push_back(ConvToStr(user->age));
 610         params.push_back(user->nick);
 611         params.push_back(user->host);
 612         params.push_back(user->dhost);
 613         params.push_back(user->ident);
 614         params.push_back(user->GetIPString());
 615         params.push_back(ConvToStr(user->signon));
 616         params.push_back("+"+std::string(user->FormatModes(true)));
 617         params.push_back(":"+std::string(user->fullname));
 618         Utils->DoOneToMany(ServerInstance->Config->GetSID(), "UID", params);
 619
 620         Utils->TreeRoot->SetUserCount(1); // increment by 1
 621 }
 622
 623 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts)
 624 {
 625         // Only do this for local users
 626         if (IS_LOCAL(memb->user))
 627         {
 628                 parameterlist params;
 629                 // set up their permissions and the channel TS with FJOIN.
 630                 // All users are FJOINed now, because a module may specify
 631                 // new joining permissions for the user.
 632                 params.push_back(memb->chan->name);
 633                 params.push_back(ConvToStr(memb->chan->age));
 634                 params.push_back(std::string("+") + memb->chan->ChanModes(true));
 635                 params.push_back(memb->modes+","+std::string(memb->user->uuid));
 636                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
 637         }
 638 }
 639
 640 ModResult ModuleSpanningTree::OnChangeLocalUserHost(User* user, const std::string &newhost)
 641 {
 642         if (user->registered != REG_ALL)
 643                 return MOD_RES_PASSTHRU;
 644
 645         parameterlist params;
 646         params.push_back(newhost);
 647         Utils->DoOneToMany(user->uuid,"FHOST",params);
 648         return MOD_RES_PASSTHRU;
 649 }
 650
 651 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 652 {
 653         // only occurs for local clients
 654         if (user->registered != REG_ALL)
 655                 return;
 656
 657         parameterlist params;
 658         params.push_back(gecos);
 659         Utils->DoOneToMany(user->uuid,"FNAME",params);
 660 }
 661
 662 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 663 {
 664         // only occurs for local clients
 665         if (user->registered != REG_ALL)
 666                 return;
 667
 668         parameterlist params;
 669         params.push_back(ident);
 670         Utils->DoOneToMany(user->uuid,"FIDENT",params);
 671 }
 672
 673 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 674 {
 675         if (IS_LOCAL(memb->user))
 676         {
 677                 parameterlist params;
 678                 params.push_back(memb->chan->name);
 679                 if (!partmessage.empty())
 680                         params.push_back(":"+partmessage);
 681                 Utils->DoOneToMany(memb->user->uuid,"PART",params);
 682         }
 683 }
 684
 685 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 686 {
 687         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 688         {
 689                 parameterlist params;
 690
 691                 if (oper_message != reason)
 692                 {
 693                         params.push_back(":"+oper_message);
 694                         Utils->DoOneToMany(user->uuid,"OPERQUIT",params);
 695                 }
 696                 params.clear();
 697                 params.push_back(":"+reason);
 698                 Utils->DoOneToMany(user->uuid,"QUIT",params);
 699         }
 700
 701         // Regardless, We need to modify the user Counts..
 702         TreeServer* SourceServer = Utils->FindServer(user->server);
 703         if (SourceServer)
 704         {
 705                 SourceServer->SetUserCount(-1); // decrement by 1
 706         }
 707 }
 708
 709 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 710 {
 711         if (IS_LOCAL(user))
 712         {
 713                 parameterlist params;
 714                 params.push_back(user->nick);
 715
 716                 /** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
 717                  */
 718                 if (irc::string(user->nick.c_str()) != assign(oldnick))
 719                         user->age = ServerInstance->Time();
 720
 721                 params.push_back(ConvToStr(user->age));
 722                 Utils->DoOneToMany(user->uuid,"NICK",params);
 723         }
 724         else if (!loopCall && user->nick == user->uuid)
 725         {
 726                 parameterlist params;
 727                 params.push_back(user->uuid);
 728                 params.push_back(ConvToStr(user->age));
 729                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"SAVE",params);
 730         }
 731 }
 732
 733 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 734 {
 735         parameterlist params;
 736         params.push_back(memb->chan->name);
 737         params.push_back(memb->user->uuid);
 738         params.push_back(":"+reason);
 739         if (IS_LOCAL(source))
 740         {
 741                 Utils->DoOneToMany(source->uuid,"KICK",params);
 742         }
 743         else if (IS_SERVER(source) && source != Utils->ServerUser)
 744         {
 745                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"KICK",params);
 746         }
 747 }
 748
 749 void ModuleSpanningTree::OnRemoteKill(User* source, User* dest, const std::string &reason, const std::string &operreason)
 750 {
 751         if (!IS_LOCAL(source))
 752                 return; // Only start routing if we're origin.
 753
 754         User::OperQuit.set(dest, operreason);
 755         parameterlist params;
 756         params.push_back(":"+operreason);
 757         Utils->DoOneToMany(dest->uuid,"OPERQUIT",params);
 758         params.clear();
 759         params.push_back(dest->uuid);
 760         params.push_back(":"+reason);
 761         Utils->DoOneToMany(source->uuid,"KILL",params);
 762 }
 763
 764 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 765 {
 766         ServerInstance->Logs->Log("remoterehash", DEBUG, "called with param %s", parameter.c_str());
 767
 768         // Send out to other servers
 769         if (!parameter.empty() && parameter[0] != '-')
 770         {
 771                 parameterlist params;
 772                 params.push_back(parameter);
 773                 Utils->DoOneToAllButSender(user ? user->uuid : ServerInstance->Config->GetSID(), "REHASH", params, user ? user->server : ServerInstance->Config->ServerName);
 774         }
 775 }
 776
 777 void ModuleSpanningTree::OnRehash(User* user)
 778 {
 779         // Re-read config stuff
 780         Utils->ReadConfiguration(true);
 781 }
 782
 783 void ModuleSpanningTree::OnLoadModule(Module* mod, const std::string &name)
 784 {
 785         this->RedoConfig(mod, name);
 786 }
 787
 788 void ModuleSpanningTree::OnUnloadModule(Module* mod, const std::string &name)
 789 {
 790         this->RedoConfig(mod, name);
 791 }
 792
 793 void ModuleSpanningTree::RedoConfig(Module* mod, const std::string &name)
 794 {
 795         /* If m_sha256.so is loaded (we use this for HMAC) or any module implementing a BufferedSocket interface is loaded,
 796          * then we need to re-read our config again taking this into account.
 797          */
 798         modulelist* ml = ServerInstance->Modules->FindInterface("BufferedSocketHook");
 799         bool IsBufferSocketModule = false;
 800
 801         /* Did we find any modules? */
 802         if (ml && std::find(ml->begin(), ml->end(), mod) != ml->end())
 803                 IsBufferSocketModule = true;
 804
 805         if (name == "m_sha256.so" || IsBufferSocketModule)
 806         {
 807                 Utils->ReadConfiguration(true);
 808         }
 809 }
 810
 811 // note: the protocol does not allow direct umode +o except
 812 // via NICK with 8 params. sending OPERTYPE infers +o modechange
 813 // locally.
 814 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 815 {
 816         if (IS_LOCAL(user))
 817         {
 818                 parameterlist params;
 819                 params.push_back(opertype);
 820                 Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
 821         }
 822 }
 823
 824 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 825 {
 826         if (!x->IsBurstable() || loopCall)
 827                 return;
 828
 829         char data[MAXBUF];
 830         snprintf(data,MAXBUF,"%s %s %s %lu %lu :%s", x->type.c_str(), x->Displayable(),
 831         ServerInstance->Config->ServerName, (unsigned long)x->set_time, (unsigned long)x->duration, x->reason.c_str());
 832         parameterlist params;
 833         params.push_back(data);
 834
 835         if (!user)
 836         {
 837                 /* Server-set lines */
 838                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "ADDLINE", params);
 839         }
 840         else if (IS_LOCAL(user))
 841         {
 842                 /* User-set lines */
 843                 Utils->DoOneToMany(user->uuid, "ADDLINE", params);
 844         }
 845 }
 846
 847 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 848 {
 849         if (x->type == "K")
 850                 return;
 851
 852         char data[MAXBUF];
 853         snprintf(data,MAXBUF,"%s %s", x->type.c_str(), x->Displayable());
 854         parameterlist params;
 855         params.push_back(data);
 856
 857         if (!user)
 858         {
 859                 /* Server-unset lines */
 860                 Utils->DoOneToMany(ServerInstance->Config->GetSID(), "DELLINE", params);
 861         }
 862         else if (IS_LOCAL(user))
 863         {
 864                 /* User-unset lines */
 865                 Utils->DoOneToMany(user->uuid, "DELLINE", params);
 866         }
 867 }
 868
 869 void ModuleSpanningTree::OnMode(User* user, void* dest, int target_type, const parameterlist &text, const std::vector<TranslateType> &translate)
 870 {
 871         if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
 872         {
 873                 parameterlist params;
 874                 std::string command;
 875                 std::string output_text;
 876
 877                 ServerInstance->Parser->TranslateUIDs(translate, text, output_text);
 878
 879                 if (target_type == TYPE_USER)
 880                 {
 881                         User* u = (User*)dest;
 882                         params.push_back(u->uuid);
 883                         params.push_back(output_text);
 884                         command = "MODE";
 885                 }
 886                 else
 887                 {
 888                         Channel* c = (Channel*)dest;
 889                         params.push_back(c->name);
 890                         params.push_back(ConvToStr(c->age));
 891                         params.push_back(output_text);
 892                         command = "FMODE";
 893                 }
 894
 895                 Utils->DoOneToMany(user->uuid, command, params);
 896         }
 897 }
 898
 899 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 900 {
 901         if (IS_LOCAL(user))
 902         {
 903                 if (awaymsg.empty())
 904                 {
 905                         parameterlist params;
 906                         Utils->DoOneToMany(user->uuid,"AWAY",params);
 907                 }
 908                 else
 909                 {
 910                         parameterlist params;
 911                         params.push_back(ConvToStr(user->awaytime));
 912                         params.push_back(":" + awaymsg);
 913                         Utils->DoOneToMany(user->uuid,"AWAY",params);
 914                 }
 915         }
 916
 917         return MOD_RES_PASSTHRU;
 918 }
 919
 920 void ModuleSpanningTree::ProtoSendMode(void* opaque, TargetTypeFlags target_type, void* target, const parameterlist &modeline, const std::vector<TranslateType> &translate)
 921 {
 922         TreeSocket* s = (TreeSocket*)opaque;
 923         std::string output_text;
 924
 925         ServerInstance->Parser->TranslateUIDs(translate, modeline, output_text);
 926
 927         if (target)
 928         {
 929                 if (target_type == TYPE_USER)
 930                 {
 931                         User* u = (User*)target;
 932                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" MODE "+u->uuid+" "+output_text);
 933                 }
 934                 else if (target_type == TYPE_CHANNEL)
 935                 {
 936                         Channel* c = (Channel*)target;
 937                         s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+output_text);
 938                 }
 939         }
 940 }
 941
 942 void ModuleSpanningTree::ProtoSendMetaData(void* opaque, Extensible* target, const std::string &extname, const std::string &extdata)
 943 {
 944         TreeSocket* s = static_cast<TreeSocket*>(opaque);
 945         User* u = dynamic_cast<User*>(target);
 946         Channel* c = dynamic_cast<Channel*>(target);
 947         if (u)
 948                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA "+u->uuid+" "+extname+" :"+extdata);
 949         else if (c)
 950                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA "+c->name+" "+extname+" :"+extdata);
 951         else if (!target)
 952                 s->WriteLine(std::string(":")+ServerInstance->Config->GetSID()+" METADATA * "+extname+" :"+extdata);
 953 }
 954
 955 void ModuleSpanningTree::OnEvent(Event* event)
 956 {
 957         if ((event->GetEventID() == "send_encap") || (event->GetEventID() == "send_metadata") || (event->GetEventID() == "send_topic") || (event->GetEventID() == "send_mode") || (event->GetEventID() == "send_mode_explicit") || (event->GetEventID() == "send_opers")
 958                 || (event->GetEventID() == "send_modeset") || (event->GetEventID() == "send_snoset") || (event->GetEventID() == "send_push"))
 959         {
 960                 ServerInstance->Logs->Log("m_spanningtree", DEBUG, "WARNING: Deprecated use of old 1.1 style m_spanningtree event ignored, type '"+event->GetEventID()+"'!");
 961         }
 962 }
 963
 964 bool ModuleSpanningTree::cull()
 965 {
 966         return Utils->cull();
 967 }
 968
 969 ModuleSpanningTree::~ModuleSpanningTree()
 970 {
 971         delete ServerInstance->PI;
 972         ServerInstance->PI = new ProtocolInterface;
 973
 974         /* This will also free the listeners */
 975         delete Utils;
 976
 977         delete command_rconnect;
 978         delete command_rsquit;
 979
 980         ServerInstance->Timers->DelTimer(RefreshTimer);
 981
 982         ServerInstance->Modules->DoneWithInterface("BufferedSocketHook");
 983 }
 984
 985 Version ModuleSpanningTree::GetVersion()
 986 {
 987         return Version("Allows servers to be linked", VF_VENDOR);
 988 }
 989
 990 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 991  * so that any activity it sees is FINAL, e.g. we arent going to send out
 992  * a NICK message before m_cloaking has finished putting the +x on the user,
 993  * etc etc.
 994  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 995  * the module call queue.
 996  */
 997 void ModuleSpanningTree::Prioritize()
 998 {
 999         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
1000 }
1001
1002 MODULE_INIT(ModuleSpanningTree)