src/modules/m_spanningtree.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include <stdio.h>
  20 #include <vector>
  21 #include <deque>
  22 #include "globals.h"
  23 #include "inspircd_config.h"
  24 #ifdef GCC3
  25 #include <ext/hash_map>
  26 #else
  27 #include <hash_map>
  28 #endif
  29 #include "users.h"
  30 #include "channels.h"
  31 #include "modules.h"
  32 #include "socket.h"
  33 #include "helperfuncs.h"
  34 #include "inspircd.h"
  35 #include "inspstring.h"
  36 #include "hashcomp.h"
  37 #include "message.h"
  38
  39 #ifdef GCC3
  40 #define nspace __gnu_cxx
  41 #else
  42 #define nspace std
  43 #endif
  44
  45 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
  46
  47 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
  48 extern user_hash clientlist;
  49
  50 class TreeServer;
  51 class TreeSocket;
  52
  53 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target);
  54 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit);
  55 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params);
  56 bool DoOneToAllButSenderRaw(std::string data,std::string omit);
  57
  58 class TreeServer
  59 {
  60         TreeServer* Parent;
  61         std::vector<TreeServer*> Children;
  62         std::string ServerName;
  63         std::string ServerDesc;
  64         std::string VersionString;
  65         int UserCount;
  66         int OperCount;
  67         TreeSocket* Socket;     // for directly connected servers this points at the socket object
  68
  69  public:
  70
  71         TreeServer()
  72         {
  73                 Parent = NULL;
  74                 ServerName = "";
  75                 ServerDesc = "";
  76                 VersionString = "";
  77                 UserCount = OperCount = 0;
  78         }
  79
  80         TreeServer(std::string Name, std::string Desc) : ServerName(Name), ServerDesc(Desc)
  81         {
  82                 Parent = NULL;
  83                 VersionString = "";
  84                 UserCount = OperCount = 0;
  85         }
  86
  87         TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name), ServerDesc(Desc), Socket(Sock)
  88         {
  89                 VersionString = "";
  90                 UserCount = OperCount = 0;
  91         }
  92
  93         std::string GetName()
  94         {
  95                 return this->ServerName;
  96         }
  97
  98         std::string GetDesc()
  99         {
 100                 return this->ServerDesc;
 101         }
 102
 103         std::string GetVersion()
 104         {
 105                 return this->VersionString;
 106         }
 107
 108         int GetUserCount()
 109         {
 110                 return this->UserCount;
 111         }
 112
 113         int GetOperCount()
 114         {
 115                 return this->OperCount;
 116         }
 117
 118         TreeSocket* GetSocket()
 119         {
 120                 return this->Socket;
 121         }
 122
 123         TreeServer* GetParent()
 124         {
 125                 return this->Parent;
 126         }
 127
 128         unsigned int ChildCount()
 129         {
 130                 return Children.size();
 131         }
 132
 133         TreeServer* GetChild(unsigned int n)
 134         {
 135                 if (n < Children.size())
 136                 {
 137                         return Children[n];
 138                 }
 139                 else
 140                 {
 141                         return NULL;
 142                 }
 143         }
 144
 145         void AddChild(TreeServer* Child)
 146         {
 147                 Children.push_back(Child);
 148         }
 149
 150         bool DelChild(TreeServer* Child)
 151         {
 152                 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 153                 {
 154                         if (*a == Child)
 155                         {
 156                                 Children.erase(a);
 157                                 return true;
 158                         }
 159                 }
 160                 return false;
 161         }
 162
 163         // removes child nodes of this node, and of that node, etc etc
 164         bool Tidy()
 165         {
 166                 bool stillchildren = true;
 167                 while (stillchildren)
 168                 {
 169                         stillchildren = false;
 170                         for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 171                         {
 172                                 TreeServer* s = (TreeServer*)*a;
 173                                 s->Tidy();
 174                                 Children.erase(a);
 175                                 delete s;
 176                                 stillchildren = true;
 177                                 break;
 178                         }
 179                 }
 180                 return true;
 181         }
 182 };
 183
 184 class Link
 185 {
 186  public:
 187          std::string Name;
 188          std::string IPAddr;
 189          int Port;
 190          std::string SendPass;
 191          std::string RecvPass;
 192 };
 193
 194 /* $ModDesc: Povides a spanning tree server link protocol */
 195
 196 Server *Srv;
 197 ConfigReader *Conf;
 198 TreeServer *TreeRoot;
 199 std::vector<Link> LinkBlocks;
 200
 201 TreeServer* RouteEnumerate(TreeServer* Current, std::string ServerName)
 202 {
 203         if (Current->GetName() == ServerName)
 204                 return Current;
 205         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 206         {
 207                 TreeServer* found = RouteEnumerate(Current->GetChild(q),ServerName);
 208                 if (found)
 209                 {
 210                         return found;
 211                 }
 212         }
 213         return NULL;
 214 }
 215
 216 // Returns the locally connected server we must route a
 217 // message through to reach server 'ServerName'. This
 218 // only applies to one-to-one and not one-to-many routing.
 219 TreeServer* BestRouteTo(std::string ServerName)
 220 {
 221         log(DEBUG,"Finding best route to %s",ServerName.c_str());
 222         // first, find the server by recursively walking the tree
 223         TreeServer* Found = RouteEnumerate(TreeRoot,ServerName);
 224         // did we find it? If not, they did something wrong, abort.
 225         if (!Found)
 226         {
 227                 log(DEBUG,"Failed to find %s by walking tree!",ServerName.c_str());
 228                 return NULL;
 229         }
 230         else
 231         {
 232                 // The server exists, follow its parent nodes until
 233                 // the parent of the current is 'TreeRoot', we know
 234                 // then that this is a directly-connected server.
 235                 while ((Found) && (Found->GetParent() != TreeRoot))
 236                 {
 237                         Found = Found->GetParent();
 238                 }
 239                 log(DEBUG,"Route to %s is via %s",ServerName.c_str(),Found->GetName().c_str());
 240                 return Found;
 241         }
 242 }
 243
 244 bool LookForServer(TreeServer* Current, std::string ServerName)
 245 {
 246         if (ServerName == Current->GetName())
 247                 return true;
 248         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 249         {
 250                 if (LookForServer(Current->GetChild(q),ServerName))
 251                         return true;
 252         }
 253         return false;
 254 }
 255
 256 TreeServer* Found;
 257
 258 void RFindServer(TreeServer* Current, std::string ServerName)
 259 {
 260         if ((ServerName == Current->GetName()) && (!Found))
 261         {
 262                 Found = Current;
 263                 log(DEBUG,"Found server %s desc %s",Current->GetName().c_str(),Current->GetDesc().c_str());
 264                 return;
 265         }
 266         if (!Found)
 267         {
 268                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 269                 {
 270                         if (!Found)
 271                                 RFindServer(Current->GetChild(q),ServerName);
 272                 }
 273         }
 274         return;
 275 }
 276
 277 TreeServer* FindServer(std::string ServerName)
 278 {
 279         Found = NULL;
 280         RFindServer(TreeRoot,ServerName);
 281         return Found;
 282 }
 283
 284 bool IsServer(std::string ServerName)
 285 {
 286         return LookForServer(TreeRoot,ServerName);
 287 }
 288
 289 class TreeSocket : public InspSocket
 290 {
 291         std::string myhost;
 292         std::string in_buffer;
 293         ServerState LinkState;
 294         std::string InboundServerName;
 295         std::string InboundDescription;
 296         int num_lost_users;
 297         int num_lost_servers;
 298
 299  public:
 300
 301         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
 302                 : InspSocket(host, port, listening, maxtime)
 303         {
 304                 Srv->Log(DEBUG,"Create new listening");
 305                 myhost = host;
 306                 this->LinkState = LISTENER;
 307         }
 308
 309         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
 310                 : InspSocket(host, port, listening, maxtime)
 311         {
 312                 Srv->Log(DEBUG,"Create new outbound");
 313                 myhost = ServerName;
 314                 this->LinkState = CONNECTING;
 315         }
 316
 317         TreeSocket(int newfd, char* ip)
 318                 : InspSocket(newfd, ip)
 319         {
 320                 Srv->Log(DEBUG,"Associate new inbound");
 321                 this->LinkState = WAIT_AUTH_1;
 322         }
 323
 324         virtual bool OnConnected()
 325         {
 326                 if (this->LinkState == CONNECTING)
 327                 {
 328                         Srv->SendOpers("*** Connection to "+myhost+"["+this->GetIP()+"] established.");
 329                         // we should send our details here.
 330                         // if the other side is satisfied, they send theirs.
 331                         // we do not need to change state here.
 332                         for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 333                         {
 334                                 if (x->Name == this->myhost)
 335                                 {
 336                                         // found who we're supposed to be connecting to, send the neccessary gubbins.
 337                                         this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
 338                                         return true;
 339                                 }
 340                         }
 341                 }
 342                 log(DEBUG,"Outbound connection ERROR: Could not find the right link block!");
 343                 return true;
 344         }
 345
 346         virtual void OnError(InspSocketError e)
 347         {
 348         }
 349
 350         virtual int OnDisconnect()
 351         {
 352                 return true;
 353         }
 354
 355         // recursively send the server tree with distances as hops
 356         void SendServers(TreeServer* Current, TreeServer* s, int hops)
 357         {
 358                 char command[1024];
 359                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 360                 {
 361                         TreeServer* recursive_server = Current->GetChild(q);
 362                         if (recursive_server != s)
 363                         {
 364                                 // :source.server SERVER server.name hops :Description
 365                                 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
 366                                 this->WriteLine(command);
 367                                 // down to next level
 368                                 this->SendServers(recursive_server, s, hops+1);
 369                         }
 370                 }
 371         }
 372
 373         void SquitServer(TreeServer* Current)
 374         {
 375                 // recursively squit the servers attached to 'Current'
 376                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 377                 {
 378                         TreeServer* recursive_server = Current->GetChild(q);
 379                         this->SquitServer(recursive_server);
 380                 }
 381                 // Now we've whacked the kids, whack self
 382                 log(DEBUG,"Deleted %s",Current->GetName().c_str());
 383                 num_lost_servers++;
 384                 bool quittingpeople = true;
 385                 while (quittingpeople)
 386                 {
 387                         quittingpeople = false;
 388                         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 389                         {
 390                                 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
 391                                 {
 392                                         log(DEBUG,"Quitting user %s of server %s",u->second->nick,u->second->server);
 393                                         Srv->QuitUser(u->second,Current->GetName()+" "+std::string(Srv->GetServerName()));
 394                                         num_lost_users++;
 395                                         quittingpeople = true;
 396                                         break;
 397                                 }
 398                         }
 399                 }
 400         }
 401
 402         void Squit(TreeServer* Current,std::string reason)
 403         {
 404                 if (Current)
 405                 {
 406                         std::deque<std::string> params;
 407                         params.push_back(Current->GetName());
 408                         params.push_back(":"+reason);
 409                         DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
 410                         if (Current->GetParent() == TreeRoot)
 411                         {
 412                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
 413                         }
 414                         else
 415                         {
 416                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
 417                         }
 418                         num_lost_servers = 0;
 419                         num_lost_users = 0;
 420                         SquitServer(Current);
 421                         Current->Tidy();
 422                         Current->GetParent()->DelChild(Current);
 423                         delete Current;
 424                         WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
 425                 }
 426                 else
 427                 {
 428                         log(DEBUG,"Squit from unknown server");
 429                 }
 430         }
 431
 432         bool ForceJoin(std::string source, std::deque<std::string> params)
 433         {
 434                 if (params.size() < 1)
 435                         return true;
 436                 for (unsigned int channelnum = 0; channelnum < params.size(); channelnum++)
 437                 {
 438                         // process one channel at a time, applying modes.
 439                         char* channel = (char*)params[channelnum].c_str();
 440                         char permissions = *channel;
 441                         char* mode = NULL;
 442                         switch (permissions)
 443                         {
 444                                 case '@':
 445                                         channel++;
 446                                         mode = "+o";
 447                                 break;
 448                                 case '%':
 449                                         channel++;
 450                                         mode = "+h";
 451                                 break;
 452                                 case '+':
 453                                         channel++;
 454                                         mode = "+v";
 455                                 break;
 456                         }
 457                         userrec* who = Srv->FindNick(source);
 458                         if (who)
 459                         {
 460                                 char* key = "";
 461                                 chanrec* chan = Srv->FindChannel(channel);
 462                                 if ((chan) && (*chan->key))
 463                                 {
 464                                         key = chan->key;
 465                                 }
 466                                 Srv->JoinUserToChannel(who,channel,key);
 467                                 if (mode)
 468                                 {
 469                                         char* modelist[3];
 470                                         modelist[0] = channel;
 471                                         modelist[1] = mode;
 472                                         modelist[2] = who->nick;
 473                                         Srv->SendMode(modelist,3,who);
 474                                 }
 475                                 DoOneToAllButSender(source,"FJOIN",params,who->server);
 476                         }
 477                 }
 478                 return true;
 479         }
 480
 481         bool IntroduceClient(std::string source, std::deque<std::string> params)
 482         {
 483                 if (params.size() < 8)
 484                         return true;
 485                 // NICK age nick host dhost ident +modes ip :gecos
 486                 //       0   1    2    3      4     5    6   7
 487                 std::string nick = params[1];
 488                 std::string host = params[2];
 489                 std::string dhost = params[3];
 490                 std::string ident = params[4];
 491                 time_t age = atoi(params[0].c_str());
 492                 std::string modes = params[5];
 493                 std::string ip = params[6];
 494                 std::string gecos = params[7];
 495                 char* tempnick = (char*)nick.c_str();
 496                 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
 497
 498                 user_hash::iterator iter;
 499                 iter = clientlist.find(tempnick);
 500                 if (iter != clientlist.end())
 501                 {
 502                         // nick collision
 503                         log(DEBUG,"Nick collision on %s!%s@%s",tempnick,ident.c_str(),host.c_str());
 504                         return true;
 505                 }
 506
 507                 clientlist[tempnick] = new userrec();
 508                 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
 509                 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
 510                 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
 511                 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
 512                 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
 513                 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
 514                 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
 515                 clientlist[tempnick]->registered = 7;
 516                 clientlist[tempnick]->signon = age;
 517                 strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
 518                 for (int i = 0; i < MAXCHANS; i++)
 519                 {
 520                         clientlist[tempnick]->chans[i].channel = NULL;
 521                         clientlist[tempnick]->chans[i].uc_modes = 0;
 522                 }
 523                 DoOneToAllButSender(source,"NICK",params,source);
 524                 return true;
 525         }
 526
 527         // send all users and their channels
 528         void SendUsers(TreeServer* Current)
 529         {
 530                 char data[MAXBUF];
 531                 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 532                 {
 533                         snprintf(data,MAXBUF,":%s NICK %lu %s %s %s %s +%s %s :%s",u->second->server,(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->ip,u->second->fullname);
 534                         this->WriteLine(data);
 535                         if (strchr(u->second->modes,'o'))
 536                         {
 537                                 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
 538                         }
 539                         char* chl = chlist(u->second,u->second);
 540                         if (*chl)
 541                         {
 542                                 this->WriteLine(":"+std::string(u->second->nick)+" FJOIN "+std::string(chl));
 543                         }
 544                 }
 545         }
 546
 547         void DoBurst(TreeServer* s)
 548         {
 549                 log(DEBUG,"Beginning network burst");
 550                 Srv->SendOpers("*** Bursting to "+s->GetName()+".");
 551                 this->WriteLine("BURST");
 552                 // Send server tree
 553                 this->SendServers(TreeRoot,s,1);
 554                 // Send users and their channels
 555                 this->SendUsers(s);
 556                 // TODO: Send everything else (channel modes etc)
 557                 this->WriteLine("ENDBURST");
 558         }
 559
 560         virtual bool OnDataReady()
 561         {
 562                 char* data = this->Read();
 563                 if (data)
 564                 {
 565                         this->in_buffer += data;
 566                         while (in_buffer.find("\n") != std::string::npos)
 567                         {
 568                                 char* line = (char*)in_buffer.c_str();
 569                                 std::string ret = "";
 570                                 while ((*line != '\n') && (strlen(line)))
 571                                 {
 572                                         ret = ret + *line;
 573                                         line++;
 574                                 }
 575                                 if ((*line == '\n') || (*line == '\r'))
 576                                         line++;
 577                                 in_buffer = line;
 578                                 if (!this->ProcessLine(ret))
 579                                 {
 580                                         return false;
 581                                 }
 582                         }
 583                 }
 584                 return (data != NULL);
 585         }
 586
 587         int WriteLine(std::string line)
 588         {
 589                 return this->Write(line + "\r\n");
 590         }
 591
 592         bool Error(std::deque<std::string> params)
 593         {
 594                 if (params.size() < 1)
 595                         return false;
 596                 std::string Errmsg = params[0];
 597                 std::string SName = myhost;
 598                 if (InboundServerName != "")
 599                 {
 600                         SName = InboundServerName;
 601                 }
 602                 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
 603                 // we will return false to cause the socket to close.
 604                 return false;
 605         }
 606
 607         bool OperType(std::string prefix, std::deque<std::string> params)
 608         {
 609                 if (params.size() != 1)
 610                         return true;
 611                 std::string opertype = params[0];
 612                 userrec* u = Srv->FindNick(prefix);
 613                 if (u)
 614                 {
 615                         strlcpy(u->oper,opertype.c_str(),NICKMAX);
 616                         if (!strchr(u->modes,'o'))
 617                         {
 618                                 strcat(u->modes,"o");
 619                         }
 620                         DoOneToAllButSender(u->server,"OPERTYPE",params,u->server);
 621                 }
 622                 return true;
 623         }
 624
 625         bool RemoteServer(std::string prefix, std::deque<std::string> params)
 626         {
 627                 if (params.size() < 4)
 628                         return false;
 629                 std::string servername = params[0];
 630                 std::string password = params[1];
 631                 int hops = atoi(params[2].c_str());
 632                 std::string description = params[3];
 633                 if (!hops)
 634                 {
 635                         this->WriteLine("ERROR :Protocol error - Introduced remote server with incorrect hopcount!");
 636                         return false;
 637                 }
 638                 TreeServer* ParentOfThis = FindServer(prefix);
 639                 if (!ParentOfThis)
 640                 {
 641                         this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
 642                         return false;
 643                 }
 644                 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
 645                 ParentOfThis->AddChild(Node);
 646                 params[3] = ":" + params[3];
 647                 DoOneToAllButSender(prefix,"SERVER",params,prefix);
 648                 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
 649                 return true;
 650         }
 651
 652         bool Outbound_Reply_Server(std::deque<std::string> params)
 653         {
 654                 if (params.size() < 4)
 655                         return false;
 656                 std::string servername = params[0];
 657                 std::string password = params[1];
 658                 int hops = atoi(params[2].c_str());
 659                 if (hops)
 660                 {
 661                         this->WriteLine("ERROR :Server too far away for authentication");
 662                         return false;
 663                 }
 664                 std::string description = params[3];
 665                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 666                 {
 667                         if ((x->Name == servername) && (x->RecvPass == password))
 668                         {
 669                                 // Begin the sync here. this kickstarts the
 670                                 // other side, waiting in WAIT_AUTH_2 state,
 671                                 // into starting their burst, as it shows
 672                                 // that we're happy.
 673                                 this->LinkState = CONNECTED;
 674                                 // we should add the details of this server now
 675                                 // to the servers tree, as a child of the root
 676                                 // node.
 677                                 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
 678                                 TreeRoot->AddChild(Node);
 679                                 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
 680                                 this->DoBurst(Node);
 681                                 return true;
 682                         }
 683                 }
 684                 this->WriteLine("ERROR :Invalid credentials");
 685                 return false;
 686         }
 687
 688         bool Inbound_Server(std::deque<std::string> params)
 689         {
 690                 if (params.size() < 4)
 691                         return false;
 692                 std::string servername = params[0];
 693                 std::string password = params[1];
 694                 int hops = atoi(params[2].c_str());
 695                 if (hops)
 696                 {
 697                         this->WriteLine("ERROR :Server too far away for authentication");
 698                         return false;
 699                 }
 700                 std::string description = params[3];
 701                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 702                 {
 703                         if ((x->Name == servername) && (x->RecvPass == password))
 704                         {
 705                                 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+this->GetIP()+"] ("+description+")");
 706                                 this->InboundServerName = servername;
 707                                 this->InboundDescription = description;
 708                                 // this is good. Send our details: Our server name and description and hopcount of 0,
 709                                 // along with the sendpass from this block.
 710                                 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
 711                                 // move to the next state, we are now waiting for THEM.
 712                                 this->LinkState = WAIT_AUTH_2;
 713                                 return true;
 714                         }
 715                 }
 716                 this->WriteLine("ERROR :Invalid credentials");
 717                 return false;
 718         }
 719
 720         std::deque<std::string> Split(std::string line, bool stripcolon)
 721         {
 722                 std::deque<std::string> n;
 723                 std::stringstream s(line);
 724                 std::string param = "";
 725                 n.clear();
 726                 int item = 0;
 727                 while (!s.eof())
 728                 {
 729                         s >> param;
 730                         if ((param.c_str()[0] == ':') && (item))
 731                         {
 732                                 char* str = (char*)param.c_str();
 733                                 str++;
 734                                 param = str;
 735                                 std::string append;
 736                                 while (!s.eof())
 737                                 {
 738                                         append = "";
 739                                         s >> append;
 740                                         if (append != "")
 741                                         {
 742                                                 param = param + " " + append;
 743                                         }
 744                                 }
 745                         }
 746                         item++;
 747                         n.push_back(param);
 748                 }
 749                 return n;
 750         }
 751
 752         bool ProcessLine(std::string line)
 753         {
 754                 Srv->Log(DEBUG,"inbound-line: '"+line+"'");
 755                 std::deque<std::string> params = this->Split(line,true);
 756                 std::string command = "";
 757                 std::string prefix = "";
 758                 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
 759                 {
 760                         prefix = params[0];
 761                         command = params[1];
 762                         char* pref = (char*)prefix.c_str();
 763                         prefix = ++pref;
 764                         params.pop_front();
 765                         params.pop_front();
 766                 }
 767                 else
 768                 {
 769                         prefix = "";
 770                         command = params[0];
 771                         params.pop_front();
 772                 }
 773
 774                 switch (this->LinkState)
 775                 {
 776                         TreeServer* Node;
 777
 778                         case WAIT_AUTH_1:
 779                                 // Waiting for SERVER command from remote server. Server initiating
 780                                 // the connection sends the first SERVER command, listening server
 781                                 // replies with theirs if its happy, then if the initiator is happy,
 782                                 // it starts to send its net sync, which starts the merge, otherwise
 783                                 // it sends an ERROR.
 784                                 if (command == "SERVER")
 785                                 {
 786                                         return this->Inbound_Server(params);
 787                                 }
 788                                 else if (command == "ERROR")
 789                                 {
 790                                         return this->Error(params);
 791                                 }
 792                         break;
 793                         case WAIT_AUTH_2:
 794                                 // Waiting for start of other side's netmerge to say they liked our
 795                                 // password.
 796                                 if (command == "SERVER")
 797                                 {
 798                                         // cant do this, they sent it to us in the WAIT_AUTH_1 state!
 799                                         // silently ignore.
 800                                         return true;
 801                                 }
 802                                 else if (command == "BURST")
 803                                 {
 804                                         this->LinkState = CONNECTED;
 805                                         Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
 806                                         TreeRoot->AddChild(Node);
 807                                         params.clear();
 808                                         params.push_back(InboundServerName);
 809                                         params.push_back("*");
 810                                         params.push_back("1");
 811                                         params.push_back(":"+InboundDescription);
 812                                         DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
 813                                         this->DoBurst(Node);
 814                                 }
 815                                 else if (command == "ERROR")
 816                                 {
 817                                         return this->Error(params);
 818                                 }
 819
 820                         break;
 821                         case LISTENER:
 822                                 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
 823                                 return false;
 824                         break;
 825                         case CONNECTING:
 826                                 if (command == "SERVER")
 827                                 {
 828                                         // another server we connected to, which was in WAIT_AUTH_1 state,
 829                                         // has just sent us their credentials. If we get this far, theyre
 830                                         // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
 831                                         // if we're happy with this, we should send our netburst which
 832                                         // kickstarts the merge.
 833                                         return this->Outbound_Reply_Server(params);
 834                                 }
 835                         break;
 836                         case CONNECTED:
 837                                 // This is the 'authenticated' state, when all passwords
 838                                 // have been exchanged and anything past this point is taken
 839                                 // as gospel.
 840                                 std::string target = "";
 841                                 if ((command == "NICK") && (params.size() > 1))
 842                                 {
 843                                         return this->IntroduceClient(prefix,params);
 844                                 }
 845                                 else if (command == "FJOIN")
 846                                 {
 847                                         return this->ForceJoin(prefix,params);
 848                                 }
 849                                 else if (command == "SERVER")
 850                                 {
 851                                         return this->RemoteServer(prefix,params);
 852                                 }
 853                                 else if (command == "OPERTYPE")
 854                                 {
 855                                         return this->OperType(prefix,params);
 856                                 }
 857                                 else if (command == "SQUIT")
 858                                 {
 859                                         if (params.size() == 2)
 860                                         {
 861                                                 this->Squit(FindServer(params[0]),params[1]);
 862                                         }
 863                                         return true;
 864                                 }
 865                                 else
 866                                 {
 867                                         // not a special inter-server command.
 868                                         // Emulate the actual user doing the command,
 869                                         // this saves us having a huge ugly parser.
 870                                         userrec* who = Srv->FindNick(prefix);
 871                                         std::string sourceserv = this->myhost;
 872                                         if (this->InboundServerName != "")
 873                                         {
 874                                                 sourceserv = this->InboundServerName;
 875                                         }
 876                                         if (who)
 877                                         {
 878                                                 // its a user
 879                                                 target = who->server;
 880                                                 char* strparams[127];
 881                                                 for (unsigned int q = 0; q < params.size(); q++)
 882                                                 {
 883                                                         strparams[q] = (char*)params[q].c_str();
 884                                                 }
 885                                                 log(DEBUG,"*** CALL COMMAND HANDLER FOR %s, SOURCE: '%s'",command.c_str(),who->nick);
 886                                                 Srv->CallCommandHandler(command, strparams, params.size(), who);
 887                                         }
 888                                         else
 889                                         {
 890                                                 // its not a user. Its either a server, or somethings screwed up.
 891                                                 if (IsServer(prefix))
 892                                                 {
 893                                                         target = Srv->GetServerName();
 894                                                 }
 895                                                 else
 896                                                 {
 897                                                         log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
 898                                                         return true;
 899                                                 }
 900                                         }
 901                                         return DoOneToAllButSenderRaw(line,sourceserv);
 902
 903                                 }
 904                                 return true;
 905                         break;
 906                 }
 907                 return true;
 908         }
 909
 910         virtual void OnTimeout()
 911         {
 912                 if (this->LinkState == CONNECTING)
 913                 {
 914                         Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
 915                 }
 916         }
 917
 918         virtual void OnClose()
 919         {
 920                 // Connection closed.
 921                 // If the connection is fully up (state CONNECTED)
 922                 // then propogate a netsplit to all peers.
 923                 std::string quitserver = this->myhost;
 924                 if (this->InboundServerName != "")
 925                 {
 926                         quitserver = this->InboundServerName;
 927                 }
 928                 TreeServer* s = FindServer(quitserver);
 929                 if (s)
 930                 {
 931                         std::deque<std::string> params;
 932                         params.push_back(quitserver);
 933                         params.push_back(":Remote host closed the connection");
 934                         DoOneToAllButSender(Srv->GetServerName(),"SQUIT",params,quitserver);
 935                         Squit(s,"Remote host closed the connection");
 936                 }
 937         }
 938
 939         virtual int OnIncomingConnection(int newsock, char* ip)
 940         {
 941                 TreeSocket* s = new TreeSocket(newsock, ip);
 942                 Srv->AddSocket(s);
 943                 return true;
 944         }
 945 };
 946
 947 bool DoOneToAllButSenderRaw(std::string data,std::string omit)
 948 {
 949         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
 950         {
 951                 TreeServer* Route = TreeRoot->GetChild(x);
 952                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (BestRouteTo(omit) != Route))
 953                 {
 954                         TreeSocket* Sock = Route->GetSocket();
 955                         log(DEBUG,"Sending RAW to %s",Route->GetName().c_str());
 956                         Sock->WriteLine(data);
 957                 }
 958         }
 959         return true;
 960 }
 961
 962 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit)
 963 {
 964         log(DEBUG,"ALLBUTONE: Comes from %s SHOULD NOT go back to %s",prefix.c_str(),omit.c_str());
 965         // TODO: Special stuff with privmsg and notice
 966         std::string FullLine = ":" + prefix + " " + command;
 967         for (unsigned int x = 0; x < params.size(); x++)
 968         {
 969                 FullLine = FullLine + " " + params[x];
 970         }
 971         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
 972         {
 973                 TreeServer* Route = TreeRoot->GetChild(x);
 974                 // Send the line IF:
 975                 // The route has a socket (its a direct connection)
 976                 // The route isnt the one to be omitted
 977                 // The route isnt the path to the one to be omitted
 978                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (BestRouteTo(omit) != Route))
 979                 {
 980                         TreeSocket* Sock = Route->GetSocket();
 981                         log(DEBUG,"Sending to %s",Route->GetName().c_str());
 982                         Sock->WriteLine(FullLine);
 983                 }
 984         }
 985         return true;
 986 }
 987
 988 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params)
 989 {
 990         std::string FullLine = ":" + prefix + " " + command;
 991         for (unsigned int x = 0; x < params.size(); x++)
 992         {
 993                 FullLine = FullLine + " " + params[x];
 994         }
 995         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
 996         {
 997                 TreeServer* Route = TreeRoot->GetChild(x);
 998                 if (Route->GetSocket())
 999                 {
1000                         TreeSocket* Sock = Route->GetSocket();
1001                         Sock->WriteLine(FullLine);
1002                 }
1003         }
1004         return true;
1005 }
1006
1007 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target)
1008 {
1009         TreeServer* Route = BestRouteTo(target);
1010         if (Route)
1011         {
1012                 std::string FullLine = ":" + prefix + " " + command;
1013                 for (unsigned int x = 0; x < params.size(); x++)
1014                 {
1015                         FullLine = FullLine + " " + params[x];
1016                 }
1017                 if (Route->GetSocket())
1018                 {
1019                         TreeSocket* Sock = Route->GetSocket();
1020                         Sock->WriteLine(FullLine);
1021                 }
1022                 return true;
1023         }
1024         else
1025         {
1026                 log(DEBUG,"Could not route message with target %s: %s",target.c_str(),command.c_str());
1027                 return true;
1028         }
1029 }
1030
1031
1032 class ModuleSpanningTree : public Module
1033 {
1034         std::vector<TreeSocket*> Bindings;
1035         int line;
1036
1037  public:
1038
1039         void ReadConfiguration(bool rebind)
1040         {
1041                 if (rebind)
1042                 {
1043                         for (int j =0; j < Conf->Enumerate("bind"); j++)
1044                         {
1045                                 std::string Type = Conf->ReadValue("bind","type",j);
1046                                 std::string IP = Conf->ReadValue("bind","address",j);
1047                                 long Port = Conf->ReadInteger("bind","port",j,true);
1048                                 if (Type == "servers")
1049                                 {
1050                                         if (IP == "*")
1051                                         {
1052                                                 IP = "";
1053                                         }
1054                                         TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
1055                                         if (listener->GetState() == I_LISTENING)
1056                                         {
1057                                                 Srv->AddSocket(listener);
1058                                                 Bindings.push_back(listener);
1059                                         }
1060                                         else
1061                                         {
1062                                                 log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
1063                                                 listener->Close();
1064                                                 delete listener;
1065                                         }
1066                                 }
1067                         }
1068                 }
1069                 LinkBlocks.clear();
1070                 for (int j =0; j < Conf->Enumerate("link"); j++)
1071                 {
1072                         Link L;
1073                         L.Name = Conf->ReadValue("link","name",j);
1074                         L.IPAddr = Conf->ReadValue("link","ipaddr",j);
1075                         L.Port = Conf->ReadInteger("link","port",j,true);
1076                         L.SendPass = Conf->ReadValue("link","sendpass",j);
1077                         L.RecvPass = Conf->ReadValue("link","recvpass",j);
1078                         LinkBlocks.push_back(L);
1079                         log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
1080                 }
1081         }
1082
1083         ModuleSpanningTree()
1084         {
1085                 Srv = new Server;
1086                 Conf = new ConfigReader;
1087                 Bindings.clear();
1088
1089                 // Create the root of the tree
1090                 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
1091
1092                 ReadConfiguration(true);
1093         }
1094
1095         void ShowLinks(TreeServer* Current, userrec* user, int hops)
1096         {
1097                 std::string Parent = TreeRoot->GetName();
1098                 if (Current->GetParent())
1099                 {
1100                         Parent = Current->GetParent()->GetName();
1101                 }
1102                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1103                 {
1104                         ShowLinks(Current->GetChild(q),user,hops+1);
1105                 }
1106                 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),hops,Current->GetDesc().c_str());
1107         }
1108
1109         void HandleLinks(char** parameters, int pcnt, userrec* user)
1110         {
1111                 ShowLinks(TreeRoot,user,0);
1112                 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
1113                 return;
1114         }
1115
1116         void HandleLusers(char** parameters, int pcnt, userrec* user)
1117         {
1118                 return;
1119         }
1120
1121         // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
1122
1123         void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
1124         {
1125                 if (line < 128)
1126                 {
1127                         for (int t = 0; t < depth; t++)
1128                         {
1129                                 matrix[line][t] = ' ';
1130                         }
1131                         strlcpy(&matrix[line][depth],Current->GetName().c_str(),80);
1132                         line++;
1133                         for (unsigned int q = 0; q < Current->ChildCount(); q++)
1134                         {
1135                                 ShowMap(Current->GetChild(q),user,depth+2,matrix);
1136                         }
1137                 }
1138         }
1139
1140         // Ok, prepare to be confused.
1141         // After much mulling over how to approach this, it struck me that
1142         // the 'usual' way of doing a /MAP isnt the best way. Instead of
1143         // keeping track of a ton of ascii characters, and line by line
1144         // under recursion working out where to place them using multiplications
1145         // and divisons, we instead render the map onto a backplane of characters
1146         // (a character matrix), then draw the branches as a series of "L" shapes
1147         // from the nodes. This is not only friendlier on CPU it uses less stack.
1148
1149         void HandleMap(char** parameters, int pcnt, userrec* user)
1150         {
1151                 // This array represents a virtual screen which we will
1152                 // "scratch" draw to, as the console device of an irc
1153                 // client does not provide for a proper terminal.
1154                 char matrix[128][80];
1155                 for (unsigned int t = 0; t < 128; t++)
1156                 {
1157                         matrix[t][0] = '\0';
1158                 }
1159                 line = 0;
1160                 // The only recursive bit is called here.
1161                 ShowMap(TreeRoot,user,0,matrix);
1162                 // Process each line one by one. The algorithm has a limit of
1163                 // 128 servers (which is far more than a spanning tree should have
1164                 // anyway, so we're ok). This limit can be raised simply by making
1165                 // the character matrix deeper, 128 rows taking 10k of memory.
1166                 for (int l = 1; l < line; l++)
1167                 {
1168                         // scan across the line looking for the start of the
1169                         // servername (the recursive part of the algorithm has placed
1170                         // the servers at indented positions depending on what they
1171                         // are related to)
1172                         int first_nonspace = 0;
1173                         while (matrix[l][first_nonspace] == ' ')
1174                         {
1175                                 first_nonspace++;
1176                         }
1177                         first_nonspace--;
1178                         // Draw the `- (corner) section: this may be overwritten by
1179                         // another L shape passing along the same vertical pane, becoming
1180                         // a |- (branch) section instead.
1181                         matrix[l][first_nonspace] = '-';
1182                         matrix[l][first_nonspace-1] = '`';
1183                         int l2 = l - 1;
1184                         // Draw upwards until we hit the parent server, causing possibly
1185                         // other corners (`-) to become branches (|-)
1186                         while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
1187                         {
1188                                 matrix[l2][first_nonspace-1] = '|';
1189                                 l2--;
1190                         }
1191                 }
1192                 // dump the whole lot to the user. This is the easy bit, honest.
1193                 for (int t = 0; t < line; t++)
1194                 {
1195                         WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
1196                 }
1197                 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
1198                 return;
1199         }
1200
1201         int HandleSquit(char** parameters, int pcnt, userrec* user)
1202         {
1203                 return 1;
1204         }
1205
1206         int HandleConnect(char** parameters, int pcnt, userrec* user)
1207         {
1208                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1209                 {
1210                         if (Srv->MatchText(x->Name.c_str(),parameters[0]))
1211                         {
1212                                 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: %s (%s:%d)",user->nick,x->Name.c_str(),x->IPAddr.c_str(),x->Port);
1213                                 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1214                                 Srv->AddSocket(newsocket);
1215                                 return 1;
1216                         }
1217                 }
1218                 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No matching server could be found in the config file.",user->nick);
1219                 return 1;
1220         }
1221
1222         virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user)
1223         {
1224                 if (command == "CONNECT")
1225                 {
1226                         return this->HandleConnect(parameters,pcnt,user);
1227                 }
1228                 else if (command == "SQUIT")
1229                 {
1230                         return this->HandleSquit(parameters,pcnt,user);
1231                 }
1232                 else if (command == "MAP")
1233                 {
1234                         this->HandleMap(parameters,pcnt,user);
1235                         return 1;
1236                 }
1237                 else if (command == "LUSERS")
1238                 {
1239                         this->HandleLusers(parameters,pcnt,user);
1240                         return 1;
1241                 }
1242                 else if (command == "LINKS")
1243                 {
1244                         this->HandleLinks(parameters,pcnt,user);
1245                         return 1;
1246                 }
1247                 return 0;
1248         }
1249
1250         virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
1251         {
1252                 if (target_type == TYPE_USER)
1253                 {
1254                         userrec* d = (userrec*)dest;
1255                         if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1256                         {
1257                                 std::deque<std::string> params;
1258                                 params.clear();
1259                                 params.push_back(d->nick);
1260                                 params.push_back(":"+text);
1261                                 DoOneToOne(user->nick,"NOTICE",params,d->server);
1262                         }
1263                 }
1264                 else
1265                 {
1266                         if (std::string(user->server) == Srv->GetServerName())
1267                         {
1268                                 chanrec *c = (chanrec*)dest;
1269                                 std::deque<std::string> params;
1270                                 params.push_back(c->name);
1271                                 params.push_back(":"+text);
1272                                 DoOneToMany(user->nick,"NOTICE",params);
1273                         }
1274                 }
1275         }
1276
1277         virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
1278         {
1279                 if (target_type == TYPE_USER)
1280                 {
1281                         // route private messages which are targetted at clients only to the server
1282                         // which needs to receive them
1283                         userrec* d = (userrec*)dest;
1284                         if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1285                         {
1286                                 std::deque<std::string> params;
1287                                 params.clear();
1288                                 params.push_back(d->nick);
1289                                 params.push_back(":"+text);
1290                                 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
1291                         }
1292                 }
1293                 else
1294                 {
1295                         if (std::string(user->server) == Srv->GetServerName())
1296                         {
1297                                 chanrec *c = (chanrec*)dest;
1298                                 std::deque<std::string> params;
1299                                 params.push_back(c->name);
1300                                 params.push_back(":"+text);
1301                                 DoOneToMany(user->nick,"PRIVMSG",params);
1302                         }
1303                 }
1304         }
1305
1306         virtual void OnUserJoin(userrec* user, chanrec* channel)
1307         {
1308                 // Only do this for local users
1309                 if (std::string(user->server) == Srv->GetServerName())
1310                 {
1311                         log(DEBUG,"**** User on %s JOINS %s",user->server,channel->name);
1312                         std::deque<std::string> params;
1313                         params.clear();
1314                         params.push_back(channel->name);
1315                         if (*channel->key)
1316                         {
1317                                 log(DEBUG,"**** With key %s",channel->key);
1318                                 // if the channel has a key, force the join by emulating the key.
1319                                 params.push_back(channel->key);
1320                         }
1321                         DoOneToMany(user->nick,"JOIN",params);
1322                 }
1323         }
1324
1325         virtual void OnUserPart(userrec* user, chanrec* channel)
1326         {
1327                 if (std::string(user->server) == Srv->GetServerName())
1328                 {
1329                         log(DEBUG,"**** User on %s PARTS %s",user->server,channel->name);
1330                         std::deque<std::string> params;
1331                         params.clear();
1332                         params.push_back(channel->name);
1333                         DoOneToMany(user->nick,"PART",params);
1334                 }
1335         }
1336
1337         virtual void OnUserConnect(userrec* user)
1338         {
1339                 char agestr[MAXBUF];
1340                 if (std::string(user->server) == Srv->GetServerName())
1341                 {
1342                         log(DEBUG,"**** User on %s CONNECTS: %s",user->server,user->nick);
1343                         std::deque<std::string> params;
1344                         snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
1345                         params.clear();
1346                         params.push_back(agestr);
1347                         params.push_back(user->nick);
1348                         params.push_back(user->host);
1349                         params.push_back(user->dhost);
1350                         params.push_back(user->ident);
1351                         params.push_back("+"+std::string(user->modes));
1352                         params.push_back(user->ip);
1353                         params.push_back(":"+std::string(user->fullname));
1354                         DoOneToMany(Srv->GetServerName(),"NICK",params);
1355                 }
1356         }
1357
1358         virtual void OnUserQuit(userrec* user, std::string reason)
1359         {
1360                 if (std::string(user->server) == Srv->GetServerName())
1361                 {
1362                         log(DEBUG,"**** User on %s QUITS: %s",user->server,user->nick);
1363                         std::deque<std::string> params;
1364                         params.push_back(":"+reason);
1365                         DoOneToMany(user->nick,"QUIT",params);
1366                 }
1367         }
1368
1369         virtual void OnUserPostNick(userrec* user, std::string oldnick)
1370         {
1371                 if (std::string(user->server) == Srv->GetServerName())
1372                 {
1373                         log(DEBUG,"**** User on %s changes NICK: %s",user->server,user->nick);
1374                         std::deque<std::string> params;
1375                         params.push_back(user->nick);
1376                         DoOneToMany(oldnick,"NICK",params);
1377                 }
1378         }
1379
1380         // note: the protocol does not allow direct umode +o except
1381         // via NICK with 8 params. sending OPERTYPE infers +o modechange
1382         // locally.
1383         virtual void OnOper(userrec* user, std::string opertype)
1384         {
1385                 if (std::string(user->server) == Srv->GetServerName())
1386                 {
1387                         std::deque<std::string> params;
1388                         params.push_back(opertype);
1389                         DoOneToMany(user->nick,"OPERTYPE",params);
1390                 }
1391         }
1392
1393         virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
1394         {
1395                 if (std::string(user->server) == Srv->GetServerName())
1396                 {
1397                         if (target_type == TYPE_USER)
1398                         {
1399                                 userrec* u = (userrec*)dest;
1400                                 std::deque<std::string> params;
1401                                 params.push_back(u->nick);
1402                                 params.push_back(text);
1403                                 DoOneToMany(user->nick,"MODE",params);
1404                         }
1405                         else
1406                         {
1407                                 chanrec* c = (chanrec*)dest;
1408                                 std::deque<std::string> params;
1409                                 params.push_back(c->name);
1410                                 params.push_back(text);
1411                                 DoOneToMany(user->nick,"MODE",params);
1412                         }
1413                 }
1414         }
1415
1416         virtual ~ModuleSpanningTree()
1417         {
1418                 delete Srv;
1419         }
1420
1421         virtual Version GetVersion()
1422         {
1423                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
1424         }
1425 };
1426
1427
1428 class ModuleSpanningTreeFactory : public ModuleFactory
1429 {
1430  public:
1431         ModuleSpanningTreeFactory()
1432         {
1433         }
1434
1435         ~ModuleSpanningTreeFactory()
1436         {
1437         }
1438
1439         virtual Module * CreateModule()
1440         {
1441                 return new ModuleSpanningTree;
1442         }
1443
1444 };
1445
1446
1447 extern "C" void * init_module( void )
1448 {
1449         return new ModuleSpanningTreeFactory;
1450 }
1451