src/modules/m_spanningtree/utils.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "commands/cmd_whois.h"
  16 #include "commands/cmd_stats.h"
  17 #include "socket.h"
  18 #include "wildcard.h"
  19 #include "xline.h"
  20 #include "transport.h"
  21 #include "socketengine.h"
  22
  23 #include "m_spanningtree/main.h"
  24 #include "m_spanningtree/utils.h"
  25 #include "m_spanningtree/treeserver.h"
  26 #include "m_spanningtree/link.h"
  27 #include "m_spanningtree/treesocket.h"
  28 #include "m_spanningtree/resolvers.h"
  29
  30 /* $ModDep: m_spanningtree/timesynctimer.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 */
  31
  32 bool SpanningTreeUtilities::IsSID(const std::string &str)
  33 {
  34         /* Returns true if the string given is exactly 3 characters long,
  35          * starts with a digit, and the other two characters are A-Z or digits
  36          */
  37         return ((str.length() == 3) && isdigit(str[0]) &&
  38                         ((str[1] >= 'A' && str[1] <= 'Z') || isdigit(str[1])) &&
  39                          ((str[2] >= 'A' && str[2] <= 'Z') || isdigit(str[2])));
  40 }
  41
  42 /** Yay for fast searches!
  43  * This is hundreds of times faster than recursion
  44  * or even scanning a linked list, especially when
  45  * there are more than a few servers to deal with.
  46  * (read as: lots).
  47  */
  48 TreeServer* SpanningTreeUtilities::FindServer(const std::string &ServerName)
  49 {
  50         if (IsSID(ServerName))
  51                 return this->FindServerID(ServerName);
  52
  53         server_hash::iterator iter = serverlist.find(ServerName.c_str());
  54         if (iter != serverlist.end())
  55         {
  56                 return iter->second;
  57         }
  58         else
  59         {
  60                 return NULL;
  61         }
  62 }
  63
  64 TreeServer* SpanningTreeUtilities::FindRemoteBurstServer(TreeServer* Server)
  65 {
  66         server_hash::iterator iter = RemoteServersBursting.find(Server->GetName().c_str());
  67         if (iter != RemoteServersBursting.end())
  68                 return iter->second;
  69         else
  70                 return NULL;
  71 }
  72
  73 TreeSocket* SpanningTreeUtilities::FindBurstingServer(const std::string &ServerName)
  74 {
  75         std::map<irc::string,TreeSocket*>::iterator iter;
  76         iter = burstingserverlist.find(ServerName.c_str());
  77         if (iter != burstingserverlist.end())
  78         {
  79                 return iter->second;
  80         }
  81         else
  82         {
  83                 return NULL;
  84         }
  85 }
  86
  87 void SpanningTreeUtilities::SetRemoteBursting(TreeServer* Server, bool bursting)
  88 {
  89         server_hash::iterator iter = RemoteServersBursting.find(Server->GetName().c_str());
  90         if (bursting)
  91         {
  92                 if (iter == RemoteServersBursting.end())
  93                         RemoteServersBursting.insert(make_pair(Server->GetName(), Server));
  94                 else return;
  95         }
  96         else
  97         {
  98                 if (iter != RemoteServersBursting.end())
  99                         RemoteServersBursting.erase(iter);
 100                 else return;
 101         }
 102         ServerInstance->Log(DEBUG,"Server %s is %sbursting nicknames", Server->GetName().c_str(), bursting ? "" : "no longer ");
 103 }
 104
 105 void SpanningTreeUtilities::AddBurstingServer(const std::string &ServerName, TreeSocket* s)
 106 {
 107         std::map<irc::string,TreeSocket*>::iterator iter = burstingserverlist.find(ServerName.c_str());
 108         if (iter == burstingserverlist.end())
 109                 burstingserverlist[ServerName.c_str()] = s;
 110 }
 111
 112 void SpanningTreeUtilities::DelBurstingServer(TreeSocket* s)
 113 {
 114          for (std::map<irc::string,TreeSocket*>::iterator iter = burstingserverlist.begin(); iter != burstingserverlist.end(); iter++)
 115          {
 116                  if (iter->second == s)
 117                  {
 118                          burstingserverlist.erase(iter);
 119                          return;
 120                  }
 121          }
 122 }
 123
 124 /** Returns the locally connected server we must route a
 125  * message through to reach server 'ServerName'. This
 126  * only applies to one-to-one and not one-to-many routing.
 127  * See the comments for the constructor of TreeServer
 128  * for more details.
 129  */
 130 TreeServer* SpanningTreeUtilities::BestRouteTo(const std::string &ServerName)
 131 {
 132         if (ServerName.c_str() == TreeRoot->GetName() || ServerName == ServerInstance->Config->GetSID())
 133                 return NULL;
 134         TreeServer* Found = FindServer(ServerName);
 135         if (Found)
 136         {
 137                 return Found->GetRoute();
 138         }
 139         else
 140         {
 141                 return NULL;
 142         }
 143 }
 144
 145 /** Find the first server matching a given glob mask.
 146  * Theres no find-using-glob method of hash_map [awwww :-(]
 147  * so instead, we iterate over the list using an iterator
 148  * and match each one until we get a hit. Yes its slow,
 149  * deal with it.
 150  */
 151 TreeServer* SpanningTreeUtilities::FindServerMask(const std::string &ServerName)
 152 {
 153         for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
 154         {
 155                 if (match(i->first.c_str(),ServerName.c_str()))
 156                         return i->second;
 157         }
 158         return NULL;
 159 }
 160
 161 TreeServer* SpanningTreeUtilities::FindServerID(const std::string &id)
 162 {
 163         server_hash::iterator iter = sidlist.find(id);
 164         if (iter != sidlist.end())
 165                 return iter->second;
 166         else
 167                 return NULL;
 168 }
 169
 170 /* A convenient wrapper that returns true if a server exists */
 171 bool SpanningTreeUtilities::IsServer(const std::string &ServerName)
 172 {
 173         return (FindServer(ServerName) != NULL);
 174 }
 175
 176 SpanningTreeUtilities::SpanningTreeUtilities(InspIRCd* Instance, ModuleSpanningTree* C) : ServerInstance(Instance), Creator(C)
 177 {
 178         Bindings.clear();
 179
 180         lines_to_apply = 0;
 181
 182         this->TreeRoot = new TreeServer(this, ServerInstance, ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc, ServerInstance->Config->GetSID());
 183
 184         modulelist* ml = ServerInstance->Modules->FindInterface("InspSocketHook");
 185
 186         /* Did we find any modules? */
 187         if (ml)
 188         {
 189                 /* Yes, enumerate them all to find out the hook name */
 190                 for (modulelist::iterator m = ml->begin(); m != ml->end(); m++)
 191                 {
 192                         /* Make a request to it for its name, its implementing
 193                          * InspSocketHook so we know its safe to do this
 194                          */
 195                         std::string name = InspSocketNameRequest((Module*)Creator, *m).Send();
 196                         /* Build a map of them */
 197                         hooks[name.c_str()] = *m;
 198                         hooknames.push_back(name);
 199                 }
 200         }
 201
 202         this->ReadConfiguration(true);
 203 }
 204
 205 SpanningTreeUtilities::~SpanningTreeUtilities()
 206 {
 207         for (unsigned int i = 0; i < Bindings.size(); i++)
 208         {
 209                 ServerInstance->SE->DelFd(Bindings[i]);
 210                 Bindings[i]->Close();
 211         }
 212         while (TreeRoot->ChildCount())
 213         {
 214                 TreeServer* child_server = TreeRoot->GetChild(0);
 215                 if (child_server)
 216                 {
 217                         TreeSocket* sock = child_server->GetSocket();
 218                         ServerInstance->SE->DelFd(sock);
 219                         sock->Close();
 220                 }
 221         }
 222         delete TreeRoot;
 223         ServerInstance->InspSocketCull();
 224 }
 225
 226 void SpanningTreeUtilities::AddThisServer(TreeServer* server, TreeServerList &list)
 227 {
 228         if (list.find(server) == list.end())
 229                 list[server] = server;
 230 }
 231
 232 /* returns a list of DIRECT servernames for a specific channel */
 233 void SpanningTreeUtilities::GetListOfServersForChannel(chanrec* c, TreeServerList &list, char status, const CUList &exempt_list)
 234 {
 235         CUList *ulist;
 236         switch (status)
 237         {
 238                 case '@':
 239                         ulist = c->GetOppedUsers();
 240                 break;
 241                 case '%':
 242                         ulist = c->GetHalfoppedUsers();
 243                 break;
 244                 case '+':
 245                         ulist = c->GetVoicedUsers();
 246                 break;
 247                 default:
 248                         ulist = c->GetUsers();
 249                 break;
 250         }
 251         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 252         {
 253                 if ((i->first->GetFd() < 0) && (exempt_list.find(i->first) == exempt_list.end()))
 254                 {
 255                         TreeServer* best = this->BestRouteTo(i->first->server);
 256                         if (best)
 257                                 AddThisServer(best,list);
 258                 }
 259         }
 260         return;
 261 }
 262
 263 bool SpanningTreeUtilities::DoOneToAllButSenderRaw(const std::string &data, const std::string &omit, const std::string &prefix, const irc::string &command, std::deque<std::string> &params)
 264 {
 265         char pfx = 0;
 266         TreeServer* omitroute = this->BestRouteTo(omit);
 267         if ((command == "NOTICE") || (command == "PRIVMSG"))
 268         {
 269                 if (params.size() >= 2)
 270                 {
 271                         /* Prefixes */
 272                         if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
 273                         {
 274                                 pfx = params[0][0];
 275                                 params[0] = params[0].substr(1, params[0].length()-1);
 276                         }
 277                         if ((*(params[0].c_str()) != '#') && (*(params[0].c_str()) != '$'))
 278                         {
 279                                 // special routing for private messages/notices
 280                                 userrec* d = ServerInstance->FindNick(params[0]);
 281                                 if (d)
 282                                 {
 283                                         std::deque<std::string> par;
 284                                         par.push_back(params[0]);
 285                                         par.push_back(":"+params[1]);
 286                                         this->DoOneToOne(prefix,command.c_str(),par,d->server);
 287                                         return true;
 288                                 }
 289                         }
 290                         else if (*(params[0].c_str()) == '$')
 291                         {
 292                                 std::deque<std::string> par;
 293                                 par.push_back(params[0]);
 294                                 par.push_back(":"+params[1]);
 295                                 this->DoOneToAllButSender(prefix,command.c_str(),par,omitroute->GetName());
 296                                 return true;
 297                         }
 298                         else
 299                         {
 300                                 chanrec* c = ServerInstance->FindChan(params[0]);
 301                                 userrec* u = ServerInstance->FindNick(prefix);
 302                                 if (c && u)
 303                                 {
 304                                         CUList elist;
 305                                         TreeServerList list;
 306                                         FOREACH_MOD(I_OnBuildExemptList, OnBuildExemptList((command == "PRIVMSG" ? MSG_PRIVMSG : MSG_NOTICE), c, u, pfx, elist));
 307                                         GetListOfServersForChannel(c,list,pfx,elist);
 308
 309                                         for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
 310                                         {
 311                                                 TreeSocket* Sock = i->second->GetSocket();
 312                                                 if ((Sock) && (i->second->GetName() != omit) && (omitroute != i->second))
 313                                                 {
 314                                                         Sock->WriteLine(data);
 315                                                 }
 316                                         }
 317                                         return true;
 318                                 }
 319                         }
 320                 }
 321         }
 322         unsigned int items =this->TreeRoot->ChildCount();
 323         for (unsigned int x = 0; x < items; x++)
 324         {
 325                 TreeServer* Route = this->TreeRoot->GetChild(x);
 326                 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
 327                 {
 328                         TreeSocket* Sock = Route->GetSocket();
 329                         if (Sock)
 330                                 Sock->WriteLine(data);
 331                 }
 332         }
 333         return true;
 334 }
 335
 336 bool SpanningTreeUtilities::DoOneToAllButSender(const std::string &prefix, const std::string &command, std::deque<std::string> &params, std::string omit)
 337 {
 338         TreeServer* omitroute = this->BestRouteTo(omit);
 339         std::string FullLine = ":" + prefix + " " + command;
 340         unsigned int words = params.size();
 341         for (unsigned int x = 0; x < words; x++)
 342         {
 343                 FullLine = FullLine + " " + params[x];
 344         }
 345         unsigned int items = this->TreeRoot->ChildCount();
 346         for (unsigned int x = 0; x < items; x++)
 347         {
 348                 TreeServer* Route = this->TreeRoot->GetChild(x);
 349                 // Send the line IF:
 350                 // The route has a socket (its a direct connection)
 351                 // The route isnt the one to be omitted
 352                 // The route isnt the path to the one to be omitted
 353                 if ((Route) && (Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
 354                 {
 355                         TreeSocket* Sock = Route->GetSocket();
 356                         if (Sock)
 357                                 Sock->WriteLine(FullLine);
 358                 }
 359         }
 360         return true;
 361 }
 362
 363 bool SpanningTreeUtilities::DoOneToMany(const std::string &prefix, const std::string &command, std::deque<std::string> &params)
 364 {
 365         std::string FullLine = ":" + prefix + " " + command;
 366         unsigned int words = params.size();
 367         for (unsigned int x = 0; x < words; x++)
 368         {
 369                 FullLine = FullLine + " " + params[x];
 370         }
 371         unsigned int items = this->TreeRoot->ChildCount();
 372         for (unsigned int x = 0; x < items; x++)
 373         {
 374                 TreeServer* Route = this->TreeRoot->GetChild(x);
 375                 if (Route && Route->GetSocket())
 376                 {
 377                         TreeSocket* Sock = Route->GetSocket();
 378                         if (Sock)
 379                                 Sock->WriteLine(FullLine);
 380                 }
 381         }
 382         return true;
 383 }
 384
 385 bool SpanningTreeUtilities::DoOneToMany(const char* prefix, const char* command, std::deque<std::string> &params)
 386 {
 387         std::string spfx = prefix;
 388         std::string scmd = command;
 389         return this->DoOneToMany(spfx, scmd, params);
 390 }
 391
 392 bool SpanningTreeUtilities::DoOneToAllButSender(const char* prefix, const char* command, std::deque<std::string> &params, std::string omit)
 393 {
 394         std::string spfx = prefix;
 395         std::string scmd = command;
 396         return this->DoOneToAllButSender(spfx, scmd, params, omit);
 397 }
 398
 399 bool SpanningTreeUtilities::DoOneToOne(const std::string &prefix, const std::string &command, std::deque<std::string> &params, std::string target)
 400 {
 401         TreeServer* Route = this->BestRouteTo(target);
 402         if (Route)
 403         {
 404                 std::string FullLine = ":" + prefix + " " + command;
 405                 unsigned int words = params.size();
 406                 for (unsigned int x = 0; x < words; x++)
 407                 {
 408                         FullLine = FullLine + " " + params[x];
 409                 }
 410                 if (Route && Route->GetSocket())
 411                 {
 412                         TreeSocket* Sock = Route->GetSocket();
 413                         if (Sock)
 414                                 Sock->WriteLine(FullLine);
 415                 }
 416                 return true;
 417         }
 418         else
 419         {
 420                 return false;
 421         }
 422 }
 423
 424 void SpanningTreeUtilities::RefreshIPCache()
 425 {
 426         ValidIPs.clear();
 427         for (std::vector<Link>::iterator L = LinkBlocks.begin(); L != LinkBlocks.end(); L++)
 428         {
 429                 if ((!L->IPAddr.empty()) && (!L->RecvPass.empty()) && (!L->SendPass.empty()) && (!L->Name.empty()) && (L->Port))
 430                 {
 431                         ValidIPs.push_back(L->IPAddr);
 432
 433                         if (L->AllowMask.length())
 434                                 ValidIPs.push_back(L->AllowMask);
 435
 436                         /* Needs resolving */
 437                         bool ipvalid = true;
 438                         QueryType start_type = DNS_QUERY_A;
 439 #ifdef IPV6
 440                         start_type = DNS_QUERY_AAAA;
 441                         if (strchr(L->IPAddr.c_str(),':'))
 442                         {
 443                                 in6_addr n;
 444                                 if (inet_pton(AF_INET6, L->IPAddr.c_str(), &n) < 1)
 445                                         ipvalid = false;
 446                         }
 447                         else
 448 #endif
 449                         {
 450                                 in_addr n;
 451                                 if (inet_aton(L->IPAddr.c_str(),&n) < 1)
 452                                         ipvalid = false;
 453                         }
 454                         if (!ipvalid)
 455                         {
 456                                 try
 457                                 {
 458                                         bool cached;
 459                                         SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L->IPAddr, *L, cached, start_type);
 460                                         ServerInstance->AddResolver(sr, cached);
 461                                 }
 462                                 catch (...)
 463                                 {
 464                                 }
 465                         }
 466                 }
 467         }
 468 }
 469
 470 void SpanningTreeUtilities::ReadConfiguration(bool rebind)
 471 {
 472         ConfigReader* Conf = new ConfigReader(ServerInstance);
 473         if (rebind)
 474         {
 475                 for (int j = 0; j < Conf->Enumerate("bind"); j++)
 476                 {
 477                         std::string Type = Conf->ReadValue("bind","type",j);
 478                         std::string IP = Conf->ReadValue("bind","address",j);
 479                         std::string Port = Conf->ReadValue("bind","port",j);
 480                         std::string transport = Conf->ReadValue("bind","transport",j);
 481                         if (Type == "servers")
 482                         {
 483                                 irc::portparser portrange(Port, false);
 484                                 int portno = -1;
 485                                 while ((portno = portrange.GetToken()))
 486                                 {
 487                                         if (IP == "*")
 488                                                 IP.clear();
 489
 490                                         if ((!transport.empty()) && (hooks.find(transport.c_str()) ==  hooks.end()))
 491                                         {
 492                                                 ServerInstance->Log(DEFAULT,"m_spanningtree: WARNING: Can't find transport type '%s' for port %s:%s - maybe you forgot to load it BEFORE m_spanningtree in your config file? - Skipping this port binding", transport.c_str(), IP.c_str(), Port.c_str());
 493                                                 break;
 494                                         }
 495
 496                                         TreeSocket* listener = new TreeSocket(this, ServerInstance, IP.c_str(), portno, true, 10, transport.empty() ? NULL : hooks[transport.c_str()]);
 497                                         if (listener->GetState() == I_LISTENING)
 498                                         {
 499                                                 ServerInstance->Log(DEFAULT,"m_spanningtree: Binding server port %s:%d successful!", IP.c_str(), portno);
 500                                                 Bindings.push_back(listener);
 501                                         }
 502                                         else
 503                                         {
 504                                                 ServerInstance->Log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port: %s:%d: %s",IP.c_str(), portno, strerror(errno));
 505                                                 listener->Close();
 506                                         }
 507                                 }
 508                         }
 509                 }
 510         }
 511         FlatLinks = Conf->ReadFlag("options","flatlinks",0);
 512         HideULines = Conf->ReadFlag("options","hideulines",0);
 513         AnnounceTSChange = Conf->ReadFlag("options","announcets",0);
 514         EnableTimeSync = Conf->ReadFlag("timesync","enable",0);
 515         MasterTime = Conf->ReadFlag("timesync", "master", 0);
 516         ChallengeResponse = !Conf->ReadFlag("options", "disablehmac", 0);
 517         quiet_bursts = Conf->ReadFlag("options", "quietbursts", 0);
 518         PingWarnTime = Conf->ReadInteger("options", "pingwarning", 0, true);
 519         PingFreq = Conf->ReadInteger("options", "serverpingfreq", 0, true);
 520
 521         if (PingFreq == 0)
 522                 PingFreq = 60;
 523
 524         if (PingWarnTime < 0 || PingWarnTime > PingFreq - 1)
 525                 PingWarnTime = 0;
 526
 527         LinkBlocks.clear();
 528         ValidIPs.clear();
 529         for (int j = 0; j < Conf->Enumerate("link"); j++)
 530         {
 531                 Link L;
 532                 std::string Allow = Conf->ReadValue("link", "allowmask", j);
 533                 L.Name = (Conf->ReadValue("link", "name", j)).c_str();
 534                 L.AllowMask = Allow;
 535                 L.IPAddr = Conf->ReadValue("link", "ipaddr", j);
 536                 L.FailOver = Conf->ReadValue("link", "failover", j).c_str();
 537                 L.Port = Conf->ReadInteger("link", "port", j, true);
 538                 L.SendPass = Conf->ReadValue("link", "sendpass", j);
 539                 L.RecvPass = Conf->ReadValue("link", "recvpass", j);
 540                 L.AutoConnect = Conf->ReadInteger("link", "autoconnect", j, true);
 541                 L.HiddenFromStats = Conf->ReadFlag("link", "statshidden", j);
 542                 L.Timeout = Conf->ReadInteger("link", "timeout", j, true);
 543                 L.Hook = Conf->ReadValue("link", "transport", j);
 544                 L.Bind = Conf->ReadValue("link", "bind", j);
 545                 L.Hidden = Conf->ReadFlag("link", "hidden", j);
 546
 547                 if ((!L.Hook.empty()) && (hooks.find(L.Hook.c_str()) ==  hooks.end()))
 548                 {
 549                         ServerInstance->Log(DEFAULT,"m_spanningtree: WARNING: Can't find transport type '%s' for link '%s' - maybe you forgot to load it BEFORE m_spanningtree in your config file? Skipping <link> tag completely.",
 550                         L.Hook.c_str(), L.Name.c_str());
 551                         continue;
 552
 553                 }
 554
 555                 L.NextConnectTime = time(NULL) + L.AutoConnect;
 556                 /* Bugfix by brain, do not allow people to enter bad configurations */
 557                 if (L.Name != ServerInstance->Config->ServerName)
 558                 {
 559                         if ((!L.IPAddr.empty()) && (!L.RecvPass.empty()) && (!L.SendPass.empty()) && (!L.Name.empty()) && (L.Port))
 560                         {
 561                                 ValidIPs.push_back(L.IPAddr);
 562
 563                                 if (Allow.length())
 564                                         ValidIPs.push_back(Allow);
 565
 566                                 /* Needs resolving */
 567                                 bool ipvalid = true;
 568                                 QueryType start_type = DNS_QUERY_A;
 569 #ifdef IPV6
 570                                 start_type = DNS_QUERY_AAAA;
 571                                 if (strchr(L.IPAddr.c_str(),':'))
 572                                 {
 573                                         in6_addr n;
 574                                         if (inet_pton(AF_INET6, L.IPAddr.c_str(), &n) < 1)
 575                                                 ipvalid = false;
 576                                 }
 577                                 else
 578                                 {
 579                                         in_addr n;
 580                                         if (inet_aton(L.IPAddr.c_str(),&n) < 1)
 581                                                 ipvalid = false;
 582                                 }
 583 #else
 584                                 in_addr n;
 585                                 if (inet_aton(L.IPAddr.c_str(),&n) < 1)
 586                                         ipvalid = false;
 587 #endif
 588
 589                                 if (!ipvalid)
 590                                 {
 591                                         try
 592                                         {
 593                                                 bool cached;
 594                                                 SecurityIPResolver* sr = new SecurityIPResolver((Module*)this->Creator, this, ServerInstance, L.IPAddr, L, cached, start_type);
 595                                                 ServerInstance->AddResolver(sr, cached);
 596                                         }
 597                                         catch (...)
 598                                         {
 599                                         }
 600                                 }
 601
 602                                 LinkBlocks.push_back(L);
 603                         }
 604                         else
 605                         {
 606                                 if (L.IPAddr.empty())
 607                                 {
 608                                         ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
 609                                 }
 610                                 else if (L.RecvPass.empty())
 611                                 {
 612                                         ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
 613                                 }
 614                                 else if (L.SendPass.empty())
 615                                 {
 616                                         ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
 617                                 }
 618                                 else if (L.Name.empty())
 619                                 {
 620                                         ServerInstance->Log(DEFAULT,"Invalid configuration, link tag without a name!");
 621                                 }
 622                                 else if (!L.Port)
 623                                 {
 624                                         ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
 625                                 }
 626                         }
 627                 }
 628                 else
 629                 {
 630                         ServerInstance->Log(DEFAULT,"Invalid configuration for server '%s', link tag has the same server name as the local server!",L.Name.c_str());
 631                 }
 632         }
 633         DELETE(Conf);
 634 }
 635
 636 void SpanningTreeUtilities::DoFailOver(Link* x)
 637 {
 638         if (x->FailOver.length())
 639         {
 640                 if (x->FailOver == x->Name)
 641                 {
 642                         Creator->RemoteMessage(NULL,"FAILOVER: Some muppet configured the failover for server \002%s\002 to point at itself. Not following it!", x->Name.c_str());
 643                         return;
 644                 }
 645                 Link* TryThisOne = this->FindLink(x->FailOver.c_str());
 646                 if (TryThisOne)
 647                 {
 648                         Creator->RemoteMessage(NULL,"FAILOVER: Trying failover link for \002%s\002: \002%s\002...", x->Name.c_str(), TryThisOne->Name.c_str());
 649                         Creator->ConnectServer(TryThisOne);
 650                 }
 651                 else
 652                 {
 653                         Creator->RemoteMessage(NULL,"FAILOVER: Invalid failover server specified for server \002%s\002, will not follow!", x->Name.c_str());
 654                 }
 655         }
 656 }
 657
 658 Link* SpanningTreeUtilities::FindLink(const std::string& name)
 659 {
 660         for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 661         {
 662                 if (ServerInstance->MatchText(x->Name.c_str(), name.c_str()))
 663                 {
 664                         return &(*x);
 665                 }
 666         }
 667         return NULL;
 668 }