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* y)
 247 {
 248         if (!y)
 249                 return;
 250         y->position++;
 251         while (y->position < (int)y->servers.size())
 252         {
 253                 Link* x = Utils->FindLink(y->servers[y->position]);
 254                 if (x)
 255                 {
 256                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 257                         ConnectServer(x, y);
 258                         return;
 259                 }
 260                 y->position++;
 261         }
 262         // Autoconnect chain has been fully iterated; start at the beginning on the
 263         // next AutoConnectServers run
 264         y->position = -1;
 265 }
 266
 267 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 268 {
 269         bool ipvalid = true;
 270
 271         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 272         {
 273                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 274                 return;
 275         }
 276
 277         QueryType start_type = DNS_QUERY_A;
 278         start_type = DNS_QUERY_AAAA;
 279         if (strchr(x->IPAddr.c_str(),':'))
 280         {
 281                 in6_addr n;
 282                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 283                         ipvalid = false;
 284         }
 285         else
 286         {
 287                 in_addr n;
 288                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 289                         ipvalid = false;
 290         }
 291
 292         /* Do we already have an IP? If so, no need to resolve it. */
 293         if (ipvalid)
 294         {
 295                 /* Gave a hook, but it wasnt one we know */
 296                 TreeSocket* newsocket = new TreeSocket(Utils, x->IPAddr, x->Port, x->Timeout ? x->Timeout : 10,
 297                         x->Name.c_str(), x->Bind, y, x->Hook);
 298                 if (newsocket->GetFd() > -1)
 299                 {
 300                         /* Handled automatically on success */
 301                 }
 302                 else
 303                 {
 304                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
 305                         ServerInstance->GlobalCulls.AddItem(newsocket);
 306                         ConnectServer(y);
 307                 }
 308         }
 309         else
 310         {
 311                 try
 312                 {
 313                         bool cached;
 314                         ServernameResolver* snr = new ServernameResolver(Utils, x->IPAddr, x, cached, start_type, y);
 315                         ServerInstance->AddResolver(snr, cached);
 316                 }
 317                 catch (ModuleException& e)
 318                 {
 319                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason());
 320                         ConnectServer(y);
 321                 }
 322         }
 323 }
 324
 325 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 326 {
 327         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 328         {
 329                 Autoconnect* x = *i;
 330                 if (curtime >= x->NextConnectTime)
 331                 {
 332                         x->NextConnectTime = curtime + x->Period;
 333                         for(unsigned int j=0; j < x->servers.size(); j++)
 334                         {
 335                                 if (Utils->FindServer(x->servers[j]))
 336                                 {
 337                                         // found something in this block. Should the server fail,
 338                                         // we want to start at the start of the list, not in the
 339                                         // middle where we left off
 340                                         x->position = -1;
 341                                         goto dupe_found; // next autoconnect block
 342                                 }
 343                         }
 344                         // only start a new chain if we aren't running
 345                         if (x->position == -1)
 346                                 ConnectServer(x);
 347                 }
 348 dupe_found:;
 349         }
 350 }
 351
 352 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 353 {
 354         std::vector<Autoconnect*> failovers;
 355         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 356         while (i != Utils->timeoutlist.end())
 357         {
 358                 TreeSocket* s = i->first;
 359                 std::pair<std::string, int> p = i->second;
 360                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 361                 i++;
 362                 if (curtime > s->age + p.second)
 363                 {
 364                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 365                         if (s->myautoconnect)
 366                                 failovers.push_back(s->myautoconnect);
 367                         Utils->timeoutlist.erase(me);
 368                         s->Close();
 369                         ServerInstance->GlobalCulls.AddItem(s);
 370                 }
 371         }
 372         for(unsigned int j=0; j < failovers.size(); j++)
 373         {
 374                 if (failovers[j]->position >= 0)
 375                         ConnectServer(failovers[j]);
 376         }
 377 }
 378
 379 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 380 {
 381         // we've already checked if pcnt > 0, so this is safe
 382         TreeServer* found = Utils->FindServerMask(parameters[0]);
 383         if (found)
 384         {
 385                 std::string Version = found->GetVersion();
 386                 user->WriteNumeric(351, "%s :%s",user->nick.c_str(),Version.c_str());
 387                 if (found == Utils->TreeRoot)
 388                 {
 389                         ServerInstance->Config->Send005(user);
 390                 }
 391         }
 392         else
 393         {
 394                 user->WriteNumeric(402, "%s %s :No such server",user->nick.c_str(),parameters[0].c_str());
 395         }
 396         return MOD_RES_DENY;
 397 }
 398
 399 /* This method will attempt to get a message to a remote user.
 400  */
 401 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 402 {
 403         char text[MAXBUF];
 404         va_list argsPtr;
 405
 406         va_start(argsPtr, format);
 407         vsnprintf(text, MAXBUF, format, argsPtr);
 408         va_end(argsPtr);
 409
 410         if (IS_LOCAL(user))
 411                 user->WriteServ("NOTICE %s :%s", user->nick.c_str(), text);
 412         else
 413                 ServerInstance->PI->SendUserNotice(user, text);
 414 }
 415
 416 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 417 {
 418         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 419         {
 420                 Link* x = *i;
 421                 if (InspIRCd::Match(x->Name.c_str(),parameters[0]))
 422                 {
 423                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name)))
 424                         {
 425                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 426                                 return MOD_RES_DENY;
 427                         }
 428
 429                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 430                         if (!CheckDupe)
 431                         {
 432                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 433                                 ConnectServer(x);
 434                                 return MOD_RES_DENY;
 435                         }
 436                         else
 437                         {
 438                                 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());
 439                                 return MOD_RES_DENY;
 440                         }
 441                 }
 442         }
 443         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 444         return MOD_RES_DENY;
 445 }
 446
 447 void ModuleSpanningTree::OnGetServerDescription(const std::string &servername,std::string &description)
 448 {
 449         TreeServer* s = Utils->FindServer(servername);
 450         if (s)
 451         {
 452                 description = s->GetDesc();
 453         }
 454 }
 455
 456 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
 457 {
 458         if (IS_LOCAL(source))
 459         {
 460                 parameterlist params;
 461                 params.push_back(dest->uuid);
 462                 params.push_back(channel->name);
 463                 params.push_back(ConvToStr(expiry));
 464                 Utils->DoOneToMany(source->uuid,"INVITE",params);
 465         }
 466 }
 467
 468 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 469 {
 470         // Drop remote events on the floor.
 471         if (!IS_LOCAL(user))
 472                 return;
 473
 474         parameterlist params;
 475         params.push_back(chan->name);
 476         params.push_back(":"+topic);
 477         Utils->DoOneToMany(user->uuid,"TOPIC",params);
 478 }
 479
 480 void ModuleSpanningTree::OnWallops(User* user, const std::string &text)
 481 {
 482         if (IS_LOCAL(user))
 483         {
 484                 parameterlist params;
 485                 params.push_back(":"+text);
 486                 Utils->DoOneToMany(user->uuid,"WALLOPS",params);
 487         }
 488 }
 489
 490 void ModuleSpanningTree::OnUserNotice(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
 491 {
 492         /* Server origin */
 493         if (user == NULL)
 494                 return;
 495
 496         if (target_type == TYPE_USER)
 497         {
 498                 User* d = (User*)dest;
 499                 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
 500                 {
 501                         parameterlist params;
 502                         params.push_back(d->uuid);
 503                         params.push_back(":"+text);
 504                         Utils->DoOneToOne(user->uuid,"NOTICE",params,d->server);
 505                 }
 506         }
 507         else if (target_type == TYPE_CHANNEL)
 508         {
 509                 if (IS_LOCAL(user))
 510                 {
 511                         Channel *c = (Channel*)dest;
 512                         if (c)
 513                         {
 514                                 std::string cname = c->name;
 515                                 if (status)
 516                                         cname = status + cname;
 517                                 TreeServerList list;
 518                                 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
 519                                 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 520                                 {
 521                                         TreeSocket* Sock = i->second->GetSocket();
 522                                         if (Sock)
 523                                                 Sock->WriteLine(":"+std::string(user->uuid)+" NOTICE "+cname+" :"+text);
 524                                 }
 525                         }
 526                 }
 527         }
 528         else if (target_type == TYPE_SERVER)
 529         {
 530                 if (IS_LOCAL(user))
 531                 {
 532                         char* target = (char*)dest;
 533                         parameterlist par;
 534                         par.push_back(target);
 535                         par.push_back(":"+text);
 536                         Utils->DoOneToMany(user->uuid,"NOTICE",par);
 537                 }
 538         }
 539 }
 540
 541 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
 542 {
 543         /* Server origin */
 544         if (user == NULL)
 545                 return;
 546
 547         if (target_type == TYPE_USER)
 548         {
 549                 // route private messages which are targetted at clients only to the server
 550                 // which needs to receive them
 551                 User* d = (User*)dest;
 552                 if ((d->GetFd() < 0) && (IS_LOCAL(user)))
 553                 {
 554                         parameterlist params;
 555                         params.push_back(d->uuid);
 556                         params.push_back(":"+text);
 557                         Utils->DoOneToOne(user->uuid,"PRIVMSG",params,d->server);
 558                 }
 559         }
 560         else if (target_type == TYPE_CHANNEL)
 561         {
 562                 if (IS_LOCAL(user))
 563                 {
 564                         Channel *c = (Channel*)dest;
 565                         if (c)
 566                         {
 567                                 std::string cname = c->name;
 568                                 if (status)
 569                                         cname = status + cname;
 570                                 TreeServerList list;
 571                                 Utils->GetListOfServersForChannel(c,list,status,exempt_list);
 572                                 for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 573                                 {
 574                                         TreeSocket* Sock = i->second->GetSocket();
 575                                         if (Sock)
 576                                                 Sock->WriteLine(":"+std::string(user->uuid)+" PRIVMSG "+cname+" :"+text);
 577                                 }
 578                         }
 579                 }
 580         }
 581         else if (target_type == TYPE_SERVER)
 582         {
 583                 if (IS_LOCAL(user))
 584                 {
 585                         char* target = (char*)dest;
 586                         parameterlist par;
 587                         par.push_back(target);
 588                         par.push_back(":"+text);
 589                         Utils->DoOneToMany(user->uuid,"PRIVMSG",par);
 590                 }
 591         }
 592 }
 593
 594 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 595 {
 596         AutoConnectServers(curtime);
 597         DoPingChecks(curtime);
 598         DoConnectTimeout(curtime);
 599 }
 600
 601 void ModuleSpanningTree::OnUserConnect(User* user)
 602 {
 603         if (user->quitting)
 604                 return;
 605
 606         parameterlist params;
 607         params.push_back(user->uuid);
 608         params.push_back(ConvToStr(user->age));
 609         params.push_back(user->nick);
 610         params.push_back(user->host);
 611         params.push_back(user->dhost);
 612         params.push_back(user->ident);
 613         params.push_back(user->GetIPString());
 614         params.push_back(ConvToStr(user->signon));
 615         params.push_back("+"+std::string(user->FormatModes(true)));
 616         params.push_back(":"+std::string(user->fullname));
 617         Utils->DoOneToMany(ServerInstance->Config->GetSID(), "UID", params);
 618
 619         Utils->TreeRoot->SetUserCount(1); // increment by 1
 620 }
 621
 622 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts)
 623 {
 624         // Only do this for local users
 625         if (IS_LOCAL(memb->user))
 626         {
 627                 parameterlist params;
 628                 // set up their permissions and the channel TS with FJOIN.
 629                 // All users are FJOINed now, because a module may specify
 630                 // new joining permissions for the user.
 631                 params.push_back(memb->chan->name);
 632                 params.push_back(ConvToStr(memb->chan->age));
 633                 params.push_back(std::string("+") + memb->chan->ChanModes(true));
 634                 params.push_back(memb->modes+","+std::string(memb->user->uuid));
 635                 Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
 636         }
 637 }
 638
 639 ModResult ModuleSpanningTree::OnChangeLocalUserHost(User* user, const std::string &newhost)
 640 {
 641         if (user->registered != REG_ALL)
 642                 return MOD_RES_PASSTHRU;
 643
 644         parameterlist params;
 645         params.push_back(newhost);
 646         Utils->DoOneToMany(user->uuid,"FHOST",params);
 647         return MOD_RES_PASSTHRU;
 648 }
 649
 650 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 651 {
 652         // only occurs for local clients
 653         if (user->registered != REG_ALL)
 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 (IS_SERVER(source) && source != Utils->ServerUser)
 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         User::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(true);
 780 }
 781
 782 void ModuleSpanningTree::OnLoadModule(Module* mod, const std::string &name)
 783 {
 784         this->RedoConfig(mod, name);
 785 }
 786
 787 void ModuleSpanningTree::OnUnloadModule(Module* mod, const std::string &name)
 788 {
 789         this->RedoConfig(mod, name);
 790 }
 791
 792 void ModuleSpanningTree::RedoConfig(Module* mod, const std::string &name)
 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 (name == "m_sha256.so" || IsBufferSocketModule)
 805         {
 806                 Utils->ReadConfiguration(true);
 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 bool 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)