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 class ModuleSpanningTree;
  46 static ModuleSpanningTree* TreeProtocolModule;
  47
  48 extern std::vector<Module*> modules;
  49 extern std::vector<ircd_module*> factory;
  50 extern int MODCOUNT;
  51
  52 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
  53
  54 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
  55 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
  56
  57 extern user_hash clientlist;
  58 extern chan_hash chanlist;
  59
  60 class TreeServer;
  61 class TreeSocket;
  62
  63 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target);
  64 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit);
  65 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params);
  66 bool DoOneToAllButSenderRaw(std::string data,std::string omit, std::string prefix,std::string command,std::deque<std::string> params);
  67 void ReadConfiguration(bool rebind);
  68
  69 class TreeServer
  70 {
  71         TreeServer* Parent;
  72         std::vector<TreeServer*> Children;
  73         std::string ServerName;
  74         std::string ServerDesc;
  75         std::string VersionString;
  76         int UserCount;
  77         int OperCount;
  78         TreeSocket* Socket;     // for directly connected servers this points at the socket object
  79         time_t NextPing;
  80         bool LastPingWasGood;
  81
  82  public:
  83
  84         TreeServer()
  85         {
  86                 Parent = NULL;
  87                 ServerName = "";
  88                 ServerDesc = "";
  89                 VersionString = "";
  90                 UserCount = OperCount = 0;
  91                 VersionString = GetVersionString();
  92         }
  93
  94         TreeServer(std::string Name, std::string Desc) : ServerName(Name), ServerDesc(Desc)
  95         {
  96                 Parent = NULL;
  97                 VersionString = "";
  98                 UserCount = OperCount = 0;
  99                 VersionString = GetVersionString();
 100         }
 101
 102         TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name), ServerDesc(Desc), Socket(Sock)
 103         {
 104                 VersionString = "";
 105                 UserCount = OperCount = 0;
 106                 this->SetNextPingTime(time(NULL) + 60);
 107                 this->SetPingFlag();
 108         }
 109
 110         std::string GetName()
 111         {
 112                 return this->ServerName;
 113         }
 114
 115         std::string GetDesc()
 116         {
 117                 return this->ServerDesc;
 118         }
 119
 120         std::string GetVersion()
 121         {
 122                 return this->VersionString;
 123         }
 124
 125         void SetNextPingTime(time_t t)
 126         {
 127                 this->NextPing = t;
 128                 LastPingWasGood = false;
 129         }
 130
 131         time_t NextPingTime()
 132         {
 133                 return this->NextPing;
 134         }
 135
 136         bool AnsweredLastPing()
 137         {
 138                 return LastPingWasGood;
 139         }
 140
 141         void SetPingFlag()
 142         {
 143                 LastPingWasGood = true;
 144         }
 145
 146         int GetUserCount()
 147         {
 148                 return this->UserCount;
 149         }
 150
 151         int GetOperCount()
 152         {
 153                 return this->OperCount;
 154         }
 155
 156         TreeSocket* GetSocket()
 157         {
 158                 return this->Socket;
 159         }
 160
 161         TreeServer* GetParent()
 162         {
 163                 return this->Parent;
 164         }
 165
 166         void SetVersion(std::string Version)
 167         {
 168                 VersionString = Version;
 169         }
 170
 171         unsigned int ChildCount()
 172         {
 173                 return Children.size();
 174         }
 175
 176         TreeServer* GetChild(unsigned int n)
 177         {
 178                 if (n < Children.size())
 179                 {
 180                         return Children[n];
 181                 }
 182                 else
 183                 {
 184                         return NULL;
 185                 }
 186         }
 187
 188         void AddChild(TreeServer* Child)
 189         {
 190                 Children.push_back(Child);
 191         }
 192
 193         bool DelChild(TreeServer* Child)
 194         {
 195                 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 196                 {
 197                         if (*a == Child)
 198                         {
 199                                 Children.erase(a);
 200                                 return true;
 201                         }
 202                 }
 203                 return false;
 204         }
 205
 206         // removes child nodes of this node, and of that node, etc etc
 207         bool Tidy()
 208         {
 209                 bool stillchildren = true;
 210                 while (stillchildren)
 211                 {
 212                         stillchildren = false;
 213                         for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 214                         {
 215                                 TreeServer* s = (TreeServer*)*a;
 216                                 s->Tidy();
 217                                 Children.erase(a);
 218                                 delete s;
 219                                 stillchildren = true;
 220                                 break;
 221                         }
 222                 }
 223                 return true;
 224         }
 225 };
 226
 227 class Link
 228 {
 229  public:
 230          std::string Name;
 231          std::string IPAddr;
 232          int Port;
 233          std::string SendPass;
 234          std::string RecvPass;
 235          unsigned long AutoConnect;
 236          time_t NextConnectTime;
 237 };
 238
 239 /* $ModDesc: Povides a spanning tree server link protocol */
 240
 241 Server *Srv;
 242 ConfigReader *Conf;
 243 TreeServer *TreeRoot;
 244 std::vector<Link> LinkBlocks;
 245
 246 TreeServer* RouteEnumerate(TreeServer* Current, std::string ServerName)
 247 {
 248         if (Current->GetName() == ServerName)
 249                 return Current;
 250         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 251         {
 252                 TreeServer* found = RouteEnumerate(Current->GetChild(q),ServerName);
 253                 if (found)
 254                 {
 255                         return found;
 256                 }
 257         }
 258         return NULL;
 259 }
 260
 261 // Returns the locally connected server we must route a
 262 // message through to reach server 'ServerName'. This
 263 // only applies to one-to-one and not one-to-many routing.
 264 TreeServer* BestRouteTo(std::string ServerName)
 265 {
 266         if (ServerName.c_str() == TreeRoot->GetName())
 267         {
 268                 return NULL;
 269         }
 270         // first, find the server by recursively walking the tree
 271         TreeServer* Found = RouteEnumerate(TreeRoot,ServerName);
 272         // did we find it? If not, they did something wrong, abort.
 273         if (!Found)
 274         {
 275                 return NULL;
 276         }
 277         else
 278         {
 279                 // The server exists, follow its parent nodes until
 280                 // the parent of the current is 'TreeRoot', we know
 281                 // then that this is a directly-connected server.
 282                 while ((Found) && (Found->GetParent() != TreeRoot))
 283                 {
 284                         Found = Found->GetParent();
 285                 }
 286                 return Found;
 287         }
 288 }
 289
 290 bool LookForServer(TreeServer* Current, std::string ServerName)
 291 {
 292         if (ServerName == Current->GetName())
 293                 return true;
 294         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 295         {
 296                 if (LookForServer(Current->GetChild(q),ServerName))
 297                         return true;
 298         }
 299         return false;
 300 }
 301
 302 TreeServer* Found;
 303
 304 void RFindServer(TreeServer* Current, std::string ServerName)
 305 {
 306         if ((ServerName == Current->GetName()) && (!Found))
 307         {
 308                 Found = Current;
 309                 return;
 310         }
 311         if (!Found)
 312         {
 313                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 314                 {
 315                         if (!Found)
 316                                 RFindServer(Current->GetChild(q),ServerName);
 317                 }
 318         }
 319         return;
 320 }
 321
 322 void RFindServerMask(TreeServer* Current, std::string ServerName)
 323 {
 324         if (Srv->MatchText(Current->GetName(),ServerName) && (!Found))
 325         {
 326                 Found = Current;
 327                 return;
 328         }
 329         if (!Found)
 330         {
 331                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 332                 {
 333                         if (!Found)
 334                                 RFindServerMask(Current->GetChild(q),ServerName);
 335                 }
 336         }
 337 }
 338
 339 TreeServer* FindServer(std::string ServerName)
 340 {
 341         Found = NULL;
 342         RFindServer(TreeRoot,ServerName);
 343         return Found;
 344 }
 345
 346 TreeServer* FindServerMask(std::string ServerName)
 347 {
 348         Found = NULL;
 349         RFindServerMask(TreeRoot,ServerName);
 350         return Found;
 351 }
 352
 353 bool IsServer(std::string ServerName)
 354 {
 355         return LookForServer(TreeRoot,ServerName);
 356 }
 357
 358 class TreeSocket : public InspSocket
 359 {
 360         std::string myhost;
 361         std::string in_buffer;
 362         ServerState LinkState;
 363         std::string InboundServerName;
 364         std::string InboundDescription;
 365         int num_lost_users;
 366         int num_lost_servers;
 367         time_t NextPing;
 368         bool LastPingWasGood;
 369
 370  public:
 371
 372         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
 373                 : InspSocket(host, port, listening, maxtime)
 374         {
 375                 myhost = host;
 376                 this->LinkState = LISTENER;
 377         }
 378
 379         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
 380                 : InspSocket(host, port, listening, maxtime)
 381         {
 382                 myhost = ServerName;
 383                 this->LinkState = CONNECTING;
 384         }
 385
 386         TreeSocket(int newfd, char* ip)
 387                 : InspSocket(newfd, ip)
 388         {
 389                 this->LinkState = WAIT_AUTH_1;
 390         }
 391
 392         virtual bool OnConnected()
 393         {
 394                 if (this->LinkState == CONNECTING)
 395                 {
 396                         Srv->SendOpers("*** Connection to "+myhost+"["+this->GetIP()+"] established.");
 397                         // we should send our details here.
 398                         // if the other side is satisfied, they send theirs.
 399                         // we do not need to change state here.
 400                         for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 401                         {
 402                                 if (x->Name == this->myhost)
 403                                 {
 404                                         // found who we're supposed to be connecting to, send the neccessary gubbins.
 405                                         this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
 406                                         return true;
 407                                 }
 408                         }
 409                 }
 410                 return true;
 411         }
 412
 413         virtual void OnError(InspSocketError e)
 414         {
 415         }
 416
 417         virtual int OnDisconnect()
 418         {
 419                 return true;
 420         }
 421
 422         // recursively send the server tree with distances as hops
 423         void SendServers(TreeServer* Current, TreeServer* s, int hops)
 424         {
 425                 char command[1024];
 426                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 427                 {
 428                         TreeServer* recursive_server = Current->GetChild(q);
 429                         if (recursive_server != s)
 430                         {
 431                                 // :source.server SERVER server.name hops :Description
 432                                 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
 433                                 this->WriteLine(command);
 434                                 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
 435                                 // down to next level
 436                                 this->SendServers(recursive_server, s, hops+1);
 437                         }
 438                 }
 439         }
 440
 441         void SquitServer(TreeServer* Current)
 442         {
 443                 // recursively squit the servers attached to 'Current'
 444                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 445                 {
 446                         TreeServer* recursive_server = Current->GetChild(q);
 447                         this->SquitServer(recursive_server);
 448                 }
 449                 // Now we've whacked the kids, whack self
 450                 num_lost_servers++;
 451                 bool quittingpeople = true;
 452                 while (quittingpeople)
 453                 {
 454                         quittingpeople = false;
 455                         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 456                         {
 457                                 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
 458                                 {
 459                                         Srv->QuitUser(u->second,Current->GetName()+" "+std::string(Srv->GetServerName()));
 460                                         num_lost_users++;
 461                                         quittingpeople = true;
 462                                         break;
 463                                 }
 464                         }
 465                 }
 466         }
 467
 468         void Squit(TreeServer* Current,std::string reason)
 469         {
 470                 if (Current)
 471                 {
 472                         std::deque<std::string> params;
 473                         params.push_back(Current->GetName());
 474                         params.push_back(":"+reason);
 475                         DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
 476                         if (Current->GetParent() == TreeRoot)
 477                         {
 478                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
 479                         }
 480                         else
 481                         {
 482                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
 483                         }
 484                         num_lost_servers = 0;
 485                         num_lost_users = 0;
 486                         SquitServer(Current);
 487                         Current->Tidy();
 488                         Current->GetParent()->DelChild(Current);
 489                         delete Current;
 490                         WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
 491                 }
 492                 else
 493                 {
 494                         log(DEFAULT,"Squit from unknown server");
 495                 }
 496         }
 497
 498         bool ForceMode(std::string source, std::deque<std::string> params)
 499         {
 500                 userrec* who = new userrec;
 501                 who->fd = FD_MAGIC_NUMBER;
 502                 if (params.size() < 2)
 503                         return true;
 504                 char* modelist[255];
 505                 for (unsigned int q = 0; q < params.size(); q++)
 506                 {
 507                         modelist[q] = (char*)params[q].c_str();
 508                 }
 509                 Srv->SendMode(modelist,params.size(),who);
 510                 DoOneToAllButSender(source,"FMODE",params,source);
 511                 delete who;
 512                 return true;
 513         }
 514
 515         bool ForceTopic(std::string source, std::deque<std::string> params)
 516         {
 517                 // FTOPIC %s %lu %s :%s
 518                 if (params.size() != 4)
 519                         return true;
 520                 std::string channel = params[0];
 521                 time_t ts = atoi(params[1].c_str());
 522                 std::string setby = params[2];
 523                 std::string topic = params[3];
 524
 525                 chanrec* c = Srv->FindChannel(channel);
 526                 if (c)
 527                 {
 528                         if ((ts >= c->topicset) || (!*c->topic))
 529                         {
 530                                 std::string oldtopic = c->topic;
 531                                 strlcpy(c->topic,topic.c_str(),MAXTOPIC);
 532                                 strlcpy(c->setby,setby.c_str(),NICKMAX);
 533                                 c->topicset = ts;
 534                                 // if the topic text is the same as the current topic,
 535                                 // dont bother to send the TOPIC command out, just silently
 536                                 // update the set time and set nick.
 537                                 if (oldtopic != topic)
 538                                         WriteChannelWithServ((char*)source.c_str(), c, "TOPIC %s :%s", c->name, c->topic);
 539                         }
 540
 541                 }
 542
 543                 // all done, send it on its way
 544                 params[3] = ":" + params[3];
 545                 DoOneToAllButSender(source,"FTOPIC",params,source);
 546
 547                 return true;
 548         }
 549
 550         bool ForceJoin(std::string source, std::deque<std::string> params)
 551         {
 552                 if (params.size() < 3)
 553                         return true;
 554
 555                 char first[MAXBUF];
 556                 char modestring[MAXBUF];
 557                 char* mode_users[127];
 558                 mode_users[0] = first;
 559                 mode_users[1] = modestring;
 560                 strcpy(mode_users[1],"+");
 561                 unsigned int modectr = 2;
 562
 563                 userrec* who = NULL;
 564                 std::string channel = params[0];
 565                 time_t TS = atoi(params[1].c_str());
 566                 char* key = "";
 567
 568                 chanrec* chan = Srv->FindChannel(channel);
 569                 if (chan)
 570                 {
 571                         key = chan->key;
 572                 }
 573                 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
 574
 575                 // default is a high value, which if we dont have this
 576                 // channel will let the other side apply their modes.
 577                 time_t ourTS = time(NULL)+600;
 578                 chanrec* us = Srv->FindChannel(channel);
 579                 if (us)
 580                 {
 581                         ourTS = us->age;
 582                 }
 583
 584                 log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
 585
 586                 // do this first, so our mode reversals are correctly received by other servers
 587                 // if there is a TS collision.
 588                 DoOneToAllButSender(source,"FJOIN",params,source);
 589
 590                 for (unsigned int usernum = 2; usernum < params.size(); usernum++)
 591                 {
 592                         // process one channel at a time, applying modes.
 593                         char* usr = (char*)params[usernum].c_str();
 594                         char permissions = *usr;
 595                         switch (permissions)
 596                         {
 597                                 case '@':
 598                                         usr++;
 599                                         mode_users[modectr++] = usr;
 600                                         strlcat(modestring,"o",MAXBUF);
 601                                 break;
 602                                 case '%':
 603                                         usr++;
 604                                         mode_users[modectr++] = usr;
 605                                         strlcat(modestring,"h",MAXBUF);
 606                                 break;
 607                                 case '+':
 608                                         usr++;
 609                                         mode_users[modectr++] = usr;
 610                                         strlcat(modestring,"v",MAXBUF);
 611                                 break;
 612                         }
 613                         who = Srv->FindNick(usr);
 614                         if (who)
 615                         {
 616                                 Srv->JoinUserToChannel(who,channel,key);
 617                                 if (modectr >= (MAXMODES-1))
 618                                 {
 619                                         // theres a mode for this user. push them onto the mode queue, and flush it
 620                                         // if there are more than MAXMODES to go.
 621                                         if (ourTS >= TS)
 622                                         {
 623                                                 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
 624                                                 Srv->SendMode(mode_users,modectr,who);
 625                                         }
 626                                         else
 627                                         {
 628                                                 log(DEBUG,"Their channel newer than ours, bouncing their modes");
 629                                                 // bouncy bouncy!
 630                                                 std::deque<std::string> params;
 631                                                 // modes are now being UNSET...
 632                                                 *mode_users[1] = '-';
 633                                                 for (unsigned int x = 0; x < modectr; x++)
 634                                                 {
 635                                                         params.push_back(mode_users[x]);
 636                                                 }
 637                                                 // tell everyone to bounce the modes. bad modes, bad!
 638                                                 DoOneToMany(Srv->GetServerName(),"FMODE",params);
 639                                         }
 640                                         strcpy(mode_users[1],"+");
 641                                         modectr = 2;
 642                                 }
 643                         }
 644                 }
 645                 // there werent enough modes built up to flush it during FJOIN,
 646                 // or, there are a number left over. flush them out.
 647                 if ((modectr > 2) && (who))
 648                 {
 649                         if (ourTS >= TS)
 650                         {
 651                                 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
 652                                 Srv->SendMode(mode_users,modectr,who);
 653                         }
 654                         else
 655                         {
 656                                 log(DEBUG,"Their channel newer than ours, bouncing their modes");
 657                                 std::deque<std::string> params;
 658                                 *mode_users[1] = '-';
 659                                 for (unsigned int x = 0; x < modectr; x++)
 660                                 {
 661                                         params.push_back(mode_users[x]);
 662                                 }
 663                                 DoOneToMany(Srv->GetServerName(),"FMODE",params);
 664                         }
 665                 }
 666                 return true;
 667         }
 668
 669         bool IntroduceClient(std::string source, std::deque<std::string> params)
 670         {
 671                 if (params.size() < 8)
 672                         return true;
 673                 // NICK age nick host dhost ident +modes ip :gecos
 674                 //       0   1    2    3      4     5    6   7
 675                 std::string nick = params[1];
 676                 std::string host = params[2];
 677                 std::string dhost = params[3];
 678                 std::string ident = params[4];
 679                 time_t age = atoi(params[0].c_str());
 680                 std::string modes = params[5];
 681                 while (*(modes.c_str()) == '+')
 682                 {
 683                         char* m = (char*)modes.c_str();
 684                         m++;
 685                         modes = m;
 686                 }
 687                 std::string ip = params[6];
 688                 std::string gecos = params[7];
 689                 char* tempnick = (char*)nick.c_str();
 690                 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
 691
 692                 user_hash::iterator iter;
 693                 iter = clientlist.find(tempnick);
 694                 if (iter != clientlist.end())
 695                 {
 696                         // nick collision
 697                         log(DEBUG,"Nick collision on %s!%s@%s: %lu %lu",tempnick,ident.c_str(),host.c_str(),(unsigned long)age,(unsigned long)iter->second->age);
 698                         this->WriteLine(":"+Srv->GetServerName()+" KILL "+tempnick+" :Nickname collision");
 699                         return true;
 700                 }
 701
 702                 clientlist[tempnick] = new userrec();
 703                 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
 704                 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
 705                 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
 706                 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
 707                 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
 708                 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
 709                 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
 710                 clientlist[tempnick]->registered = 7;
 711                 clientlist[tempnick]->signon = age;
 712                 strlcpy(clientlist[tempnick]->modes, modes.c_str(),53);
 713                 strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
 714                 for (int i = 0; i < MAXCHANS; i++)
 715                 {
 716                         clientlist[tempnick]->chans[i].channel = NULL;
 717                         clientlist[tempnick]->chans[i].uc_modes = 0;
 718                 }
 719                 params[7] = ":" + params[7];
 720                 DoOneToAllButSender(source,"NICK",params,source);
 721                 return true;
 722         }
 723
 724         void SendFJoins(TreeServer* Current, chanrec* c)
 725         {
 726                 char list[MAXBUF];
 727                 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
 728                 std::vector<char*> *ulist = c->GetUsers();
 729                 for (unsigned int i = 0; i < ulist->size(); i++)
 730                 {
 731                         char* o = (*ulist)[i];
 732                         userrec* otheruser = (userrec*)o;
 733                         strlcat(list," ",MAXBUF);
 734                         strlcat(list,cmode(otheruser,c),MAXBUF);
 735                         strlcat(list,otheruser->nick,MAXBUF);
 736                         if (strlen(list)>(480-NICKMAX))
 737                         {
 738                                 this->WriteLine(list);
 739                                 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
 740                         }
 741                 }
 742                 if (list[strlen(list)-1] != ':')
 743                 {
 744                         this->WriteLine(list);
 745                 }
 746         }
 747
 748         void SendChannelModes(TreeServer* Current)
 749         {
 750                 char data[MAXBUF];
 751                 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
 752                 {
 753                         SendFJoins(Current, c->second);
 754                         snprintf(data,MAXBUF,":%s FMODE %s +%s",Srv->GetServerName().c_str(),c->second->name,chanmodes(c->second));
 755                         this->WriteLine(data);
 756                         if (*c->second->topic)
 757                         {
 758                                 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",Srv->GetServerName().c_str(),c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
 759                                 this->WriteLine(data);
 760                         }
 761                         for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
 762                         {
 763                                 snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
 764                                 this->WriteLine(data);
 765                         }
 766                         FOREACH_MOD OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this);
 767                 }
 768         }
 769
 770         // send all users and their channels
 771         void SendUsers(TreeServer* Current)
 772         {
 773                 char data[MAXBUF];
 774                 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 775                 {
 776                         if (u->second->registered == 7)
 777                         {
 778                                 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);
 779                                 this->WriteLine(data);
 780                                 if (strchr(u->second->modes,'o'))
 781                                 {
 782                                         this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
 783                                 }
 784                                 //char* chl = chlist(u->second,u->second);
 785                                 //if (*chl)
 786                                 //{
 787                                 //      this->WriteLine(":"+std::string(u->second->nick)+" FJOIN "+std::string(chl));
 788                                 //}
 789                                 FOREACH_MOD OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this);
 790                         }
 791                 }
 792         }
 793
 794         void DoBurst(TreeServer* s)
 795         {
 796                 Srv->SendOpers("*** Bursting to "+s->GetName()+".");
 797                 this->WriteLine("BURST");
 798                 // send our version string
 799                 this->WriteLine(":"+Srv->GetServerName()+" VERSION :"+GetVersionString());
 800                 // Send server tree
 801                 this->SendServers(TreeRoot,s,1);
 802                 // Send users and their channels
 803                 this->SendUsers(s);
 804                 // Send everything else (channel modes etc)
 805                 this->SendChannelModes(s);
 806                 this->WriteLine("ENDBURST");
 807         }
 808
 809         virtual bool OnDataReady()
 810         {
 811                 char* data = this->Read();
 812                 if (data)
 813                 {
 814                         this->in_buffer += data;
 815                         while (in_buffer.find("\n") != std::string::npos)
 816                         {
 817                                 char* line = (char*)in_buffer.c_str();
 818                                 std::string ret = "";
 819                                 while ((*line != '\n') && (strlen(line)))
 820                                 {
 821                                         ret = ret + *line;
 822                                         line++;
 823                                 }
 824                                 if ((*line == '\n') || (*line == '\r'))
 825                                         line++;
 826                                 in_buffer = line;
 827                                 if (!this->ProcessLine(ret))
 828                                 {
 829                                         return false;
 830                                 }
 831                         }
 832                 }
 833                 return (data != NULL);
 834         }
 835
 836         int WriteLine(std::string line)
 837         {
 838                 return this->Write(line + "\r\n");
 839         }
 840
 841         bool Error(std::deque<std::string> params)
 842         {
 843                 if (params.size() < 1)
 844                         return false;
 845                 std::string Errmsg = params[0];
 846                 std::string SName = myhost;
 847                 if (InboundServerName != "")
 848                 {
 849                         SName = InboundServerName;
 850                 }
 851                 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
 852                 // we will return false to cause the socket to close.
 853                 return false;
 854         }
 855
 856         bool OperType(std::string prefix, std::deque<std::string> params)
 857         {
 858                 if (params.size() != 1)
 859                         return true;
 860                 std::string opertype = params[0];
 861                 userrec* u = Srv->FindNick(prefix);
 862                 if (u)
 863                 {
 864                         strlcpy(u->oper,opertype.c_str(),NICKMAX);
 865                         if (!strchr(u->modes,'o'))
 866                         {
 867                                 strcat(u->modes,"o");
 868                         }
 869                         DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
 870                 }
 871                 return true;
 872         }
 873
 874         bool RemoteRehash(std::string prefix, std::deque<std::string> params)
 875         {
 876                 if (params.size() < 1)
 877                         return true;
 878                 std::string servermask = params[0];
 879                 if (Srv->MatchText(Srv->GetServerName(),servermask))
 880                 {
 881                         Srv->SendOpers("*** Remote rehash initiated from server \002"+prefix+"\002.");
 882                         Srv->RehashServer();
 883                         ReadConfiguration(false);
 884                 }
 885                 DoOneToAllButSender(prefix,"REHASH",params,prefix);
 886                 return true;
 887         }
 888
 889         bool RemoteKill(std::string prefix, std::deque<std::string> params)
 890         {
 891                 if (params.size() != 2)
 892                         return true;
 893                 std::string nick = params[0];
 894                 std::string reason = params[1];
 895                 userrec* u = Srv->FindNick(prefix);
 896                 userrec* who = Srv->FindNick(nick);
 897                 if (who)
 898                 {
 899                         std::string sourceserv = prefix;
 900                         if (u)
 901                         {
 902                                 sourceserv = u->server;
 903                         }
 904                         params[1] = ":" + params[1];
 905                         DoOneToAllButSender(prefix,"KILL",params,sourceserv);
 906                         Srv->QuitUser(who,reason);
 907                 }
 908                 return true;
 909         }
 910
 911         bool LocalPong(std::string prefix, std::deque<std::string> params)
 912         {
 913                 if (params.size() < 1)
 914                         return true;
 915                 TreeServer* ServerSource = FindServer(prefix);
 916                 if (ServerSource)
 917                 {
 918                         ServerSource->SetPingFlag();
 919                 }
 920                 return true;
 921         }
 922
 923         bool ServerVersion(std::string prefix, std::deque<std::string> params)
 924         {
 925                 if (params.size() < 1)
 926                         return true;
 927                 TreeServer* ServerSource = FindServer(prefix);
 928                 if (ServerSource)
 929                 {
 930                         ServerSource->SetVersion(params[0]);
 931                 }
 932                 params[0] = ":" + params[0];
 933                 DoOneToAllButSender(prefix,"VERSION",params,prefix);
 934                 return true;
 935         }
 936
 937         bool ChangeHost(std::string prefix, std::deque<std::string> params)
 938         {
 939                 if (params.size() < 1)
 940                         return true;
 941                 userrec* u = Srv->FindNick(prefix);
 942                 if (u)
 943                 {
 944                         Srv->ChangeHost(u,params[0]);
 945                         DoOneToAllButSender(prefix,"FHOST",params,u->server);
 946                 }
 947                 return true;
 948         }
 949
 950         bool ChangeName(std::string prefix, std::deque<std::string> params)
 951         {
 952                 if (params.size() < 1)
 953                         return true;
 954                 userrec* u = Srv->FindNick(prefix);
 955                 if (u)
 956                 {
 957                         Srv->ChangeGECOS(u,params[0]);
 958                         params[0] = ":" + params[0];
 959                         DoOneToAllButSender(prefix,"FNAME",params,u->server);
 960                 }
 961                 return true;
 962         }
 963
 964         bool LocalPing(std::string prefix, std::deque<std::string> params)
 965         {
 966                 if (params.size() < 1)
 967                         return true;
 968                 std::string stufftobounce = params[0];
 969                 this->WriteLine(":"+Srv->GetServerName()+" PONG "+stufftobounce);
 970                 return true;
 971         }
 972
 973         bool RemoteServer(std::string prefix, std::deque<std::string> params)
 974         {
 975                 if (params.size() < 4)
 976                         return false;
 977                 std::string servername = params[0];
 978                 std::string password = params[1];
 979                 // hopcount is not used for a remote server, we calculate this ourselves
 980                 std::string description = params[3];
 981                 TreeServer* ParentOfThis = FindServer(prefix);
 982                 if (!ParentOfThis)
 983                 {
 984                         this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
 985                         return false;
 986                 }
 987                 TreeServer* CheckDupe = FindServer(servername);
 988                 if (CheckDupe)
 989                 {
 990                         this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
 991                         return false;
 992                 }
 993                 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
 994                 ParentOfThis->AddChild(Node);
 995                 params[3] = ":" + params[3];
 996                 DoOneToAllButSender(prefix,"SERVER",params,prefix);
 997                 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
 998                 return true;
 999         }
1000
1001         bool Outbound_Reply_Server(std::deque<std::string> params)
1002         {
1003                 if (params.size() < 4)
1004                         return false;
1005                 std::string servername = params[0];
1006                 std::string password = params[1];
1007                 int hops = atoi(params[2].c_str());
1008                 if (hops)
1009                 {
1010                         this->WriteLine("ERROR :Server too far away for authentication");
1011                         return false;
1012                 }
1013                 std::string description = params[3];
1014                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1015                 {
1016                         if ((x->Name == servername) && (x->RecvPass == password))
1017                         {
1018                                 TreeServer* CheckDupe = FindServer(servername);
1019                                 if (CheckDupe)
1020                                 {
1021                                         this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1022                                         return false;
1023                                 }
1024                                 // Begin the sync here. this kickstarts the
1025                                 // other side, waiting in WAIT_AUTH_2 state,
1026                                 // into starting their burst, as it shows
1027                                 // that we're happy.
1028                                 this->LinkState = CONNECTED;
1029                                 // we should add the details of this server now
1030                                 // to the servers tree, as a child of the root
1031                                 // node.
1032                                 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
1033                                 TreeRoot->AddChild(Node);
1034                                 params[3] = ":" + params[3];
1035                                 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
1036                                 this->DoBurst(Node);
1037                                 return true;
1038                         }
1039                 }
1040                 this->WriteLine("ERROR :Invalid credentials");
1041                 return false;
1042         }
1043
1044         bool Inbound_Server(std::deque<std::string> params)
1045         {
1046                 if (params.size() < 4)
1047                         return false;
1048                 std::string servername = params[0];
1049                 std::string password = params[1];
1050                 int hops = atoi(params[2].c_str());
1051                 if (hops)
1052                 {
1053                         this->WriteLine("ERROR :Server too far away for authentication");
1054                         return false;
1055                 }
1056                 std::string description = params[3];
1057                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1058                 {
1059                         if ((x->Name == servername) && (x->RecvPass == password))
1060                         {
1061                                 TreeServer* CheckDupe = FindServer(servername);
1062                                 if (CheckDupe)
1063                                 {
1064                                         this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1065                                         return false;
1066                                 }
1067                                 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+this->GetIP()+"] ("+description+")");
1068                                 this->InboundServerName = servername;
1069                                 this->InboundDescription = description;
1070                                 // this is good. Send our details: Our server name and description and hopcount of 0,
1071                                 // along with the sendpass from this block.
1072                                 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
1073                                 // move to the next state, we are now waiting for THEM.
1074                                 this->LinkState = WAIT_AUTH_2;
1075                                 return true;
1076                         }
1077                 }
1078                 this->WriteLine("ERROR :Invalid credentials");
1079                 return false;
1080         }
1081
1082         std::deque<std::string> Split(std::string line, bool stripcolon)
1083         {
1084                 std::deque<std::string> n;
1085                 if (!strchr(line.c_str(),' '))
1086                 {
1087                         n.push_back(line);
1088                         return n;
1089                 }
1090                 std::stringstream s(line);
1091                 std::string param = "";
1092                 n.clear();
1093                 int item = 0;
1094                 while (!s.eof())
1095                 {
1096                         char c;
1097                         s.get(c);
1098                         if (c == ' ')
1099                         {
1100                                 n.push_back(param);
1101                                 param = "";
1102                                 item++;
1103                         }
1104                         else
1105                         {
1106                                 if (!s.eof())
1107                                 {
1108                                         param = param + c;
1109                                 }
1110                                 if ((param == ":") && (item > 0))
1111                                 {
1112                                         param = "";
1113                                         while (!s.eof())
1114                                         {
1115                                                 s.get(c);
1116                                                 if (!s.eof())
1117                                                 {
1118                                                         param = param + c;
1119                                                 }
1120                                         }
1121                                         n.push_back(param);
1122                                         param = "";
1123                                 }
1124                         }
1125                 }
1126                 if (param != "")
1127                 {
1128                         n.push_back(param);
1129                 }
1130                 return n;
1131         }
1132
1133         bool ProcessLine(std::string line)
1134         {
1135                 char* l = (char*)line.c_str();
1136                 while ((strlen(l)) && (l[strlen(l)-1] == '\r') || (l[strlen(l)-1] == '\n'))
1137                         l[strlen(l)-1] = '\0';
1138                 line = l;
1139                 if (line == "")
1140                         return true;
1141                 Srv->Log(DEBUG,"IN: '"+line+"'");
1142                 std::deque<std::string> params = this->Split(line,true);
1143                 std::string command = "";
1144                 std::string prefix = "";
1145                 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
1146                 {
1147                         prefix = params[0];
1148                         command = params[1];
1149                         char* pref = (char*)prefix.c_str();
1150                         prefix = ++pref;
1151                         params.pop_front();
1152                         params.pop_front();
1153                 }
1154                 else
1155                 {
1156                         prefix = "";
1157                         command = params[0];
1158                         params.pop_front();
1159                 }
1160
1161                 switch (this->LinkState)
1162                 {
1163                         TreeServer* Node;
1164
1165                         case WAIT_AUTH_1:
1166                                 // Waiting for SERVER command from remote server. Server initiating
1167                                 // the connection sends the first SERVER command, listening server
1168                                 // replies with theirs if its happy, then if the initiator is happy,
1169                                 // it starts to send its net sync, which starts the merge, otherwise
1170                                 // it sends an ERROR.
1171                                 if (command == "SERVER")
1172                                 {
1173                                         return this->Inbound_Server(params);
1174                                 }
1175                                 else if (command == "ERROR")
1176                                 {
1177                                         return this->Error(params);
1178                                 }
1179                         break;
1180                         case WAIT_AUTH_2:
1181                                 // Waiting for start of other side's netmerge to say they liked our
1182                                 // password.
1183                                 if (command == "SERVER")
1184                                 {
1185                                         // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1186                                         // silently ignore.
1187                                         return true;
1188                                 }
1189                                 else if (command == "BURST")
1190                                 {
1191                                         this->LinkState = CONNECTED;
1192                                         Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
1193                                         TreeRoot->AddChild(Node);
1194                                         params.clear();
1195                                         params.push_back(InboundServerName);
1196                                         params.push_back("*");
1197                                         params.push_back("1");
1198                                         params.push_back(":"+InboundDescription);
1199                                         DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
1200                                         this->DoBurst(Node);
1201                                 }
1202                                 else if (command == "ERROR")
1203                                 {
1204                                         return this->Error(params);
1205                                 }
1206
1207                         break;
1208                         case LISTENER:
1209                                 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
1210                                 return false;
1211                         break;
1212                         case CONNECTING:
1213                                 if (command == "SERVER")
1214                                 {
1215                                         // another server we connected to, which was in WAIT_AUTH_1 state,
1216                                         // has just sent us their credentials. If we get this far, theyre
1217                                         // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1218                                         // if we're happy with this, we should send our netburst which
1219                                         // kickstarts the merge.
1220                                         return this->Outbound_Reply_Server(params);
1221                                 }
1222                                 else if (command == "ERROR")
1223                                 {
1224                                         return this->Error(params);
1225                                 }
1226                         break;
1227                         case CONNECTED:
1228                                 // This is the 'authenticated' state, when all passwords
1229                                 // have been exchanged and anything past this point is taken
1230                                 // as gospel.
1231                                 std::string target = "";
1232                                 if ((command == "NICK") && (params.size() > 1))
1233                                 {
1234                                         return this->IntroduceClient(prefix,params);
1235                                 }
1236                                 else if (command == "FJOIN")
1237                                 {
1238                                         return this->ForceJoin(prefix,params);
1239                                 }
1240                                 else if (command == "SERVER")
1241                                 {
1242                                         return this->RemoteServer(prefix,params);
1243                                 }
1244                                 else if (command == "ERROR")
1245                                 {
1246                                         return this->Error(params);
1247                                 }
1248                                 else if (command == "OPERTYPE")
1249                                 {
1250                                         return this->OperType(prefix,params);
1251                                 }
1252                                 else if (command == "FMODE")
1253                                 {
1254                                         return this->ForceMode(prefix,params);
1255                                 }
1256                                 else if (command == "KILL")
1257                                 {
1258                                         return this->RemoteKill(prefix,params);
1259                                 }
1260                                 else if (command == "FTOPIC")
1261                                 {
1262                                         return this->ForceTopic(prefix,params);
1263                                 }
1264                                 else if (command == "REHASH")
1265                                 {
1266                                         return this->RemoteRehash(prefix,params);
1267                                 }
1268                                 else if (command == "PING")
1269                                 {
1270                                         return this->LocalPing(prefix,params);
1271                                 }
1272                                 else if (command == "PONG")
1273                                 {
1274                                         return this->LocalPong(prefix,params);
1275                                 }
1276                                 else if (command == "VERSION")
1277                                 {
1278                                         return this->ServerVersion(prefix,params);
1279                                 }
1280                                 else if (command == "FHOST")
1281                                 {
1282                                         return this->ChangeHost(prefix,params);
1283                                 }
1284                                 else if (command == "FNAME")
1285                                 {
1286                                         return this->ChangeName(prefix,params);
1287                                 }
1288                                 else if (command == "SQUIT")
1289                                 {
1290                                         if (params.size() == 2)
1291                                         {
1292                                                 this->Squit(FindServer(params[0]),params[1]);
1293                                         }
1294                                         return true;
1295                                 }
1296                                 else
1297                                 {
1298                                         // not a special inter-server command.
1299                                         // Emulate the actual user doing the command,
1300                                         // this saves us having a huge ugly parser.
1301                                         userrec* who = Srv->FindNick(prefix);
1302                                         std::string sourceserv = this->myhost;
1303                                         if (this->InboundServerName != "")
1304                                         {
1305                                                 sourceserv = this->InboundServerName;
1306                                         }
1307                                         if (who)
1308                                         {
1309                                                 // its a user
1310                                                 target = who->server;
1311                                                 char* strparams[127];
1312                                                 for (unsigned int q = 0; q < params.size(); q++)
1313                                                 {
1314                                                         strparams[q] = (char*)params[q].c_str();
1315                                                 }
1316                                                 Srv->CallCommandHandler(command, strparams, params.size(), who);
1317                                         }
1318                                         else
1319                                         {
1320                                                 // its not a user. Its either a server, or somethings screwed up.
1321                                                 if (IsServer(prefix))
1322                                                 {
1323                                                         target = Srv->GetServerName();
1324                                                 }
1325                                                 else
1326                                                 {
1327                                                         log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
1328                                                         return true;
1329                                                 }
1330                                         }
1331                                         return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1332
1333                                 }
1334                                 return true;
1335                         break;
1336                 }
1337                 return true;
1338         }
1339
1340         virtual std::string GetName()
1341         {
1342                 std::string sourceserv = this->myhost;
1343                 if (this->InboundServerName != "")
1344                 {
1345                         sourceserv = this->InboundServerName;
1346                 }
1347                 return sourceserv;
1348         }
1349
1350         virtual void OnTimeout()
1351         {
1352                 if (this->LinkState == CONNECTING)
1353                 {
1354                         Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
1355                 }
1356         }
1357
1358         virtual void OnClose()
1359         {
1360                 // Connection closed.
1361                 // If the connection is fully up (state CONNECTED)
1362                 // then propogate a netsplit to all peers.
1363                 std::string quitserver = this->myhost;
1364                 if (this->InboundServerName != "")
1365                 {
1366                         quitserver = this->InboundServerName;
1367                 }
1368                 TreeServer* s = FindServer(quitserver);
1369                 if (s)
1370                 {
1371                         Squit(s,"Remote host closed the connection");
1372                 }
1373         }
1374
1375         virtual int OnIncomingConnection(int newsock, char* ip)
1376         {
1377                 TreeSocket* s = new TreeSocket(newsock, ip);
1378                 Srv->AddSocket(s);
1379                 return true;
1380         }
1381 };
1382
1383 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
1384 {
1385         for (unsigned int c = 0; c < list.size(); c++)
1386         {
1387                 if (list[c] == server)
1388                 {
1389                         return;
1390                 }
1391         }
1392         list.push_back(server);
1393 }
1394
1395 // returns a list of DIRECT servernames for a specific channel
1396 std::deque<TreeServer*> GetListOfServersForChannel(chanrec* c)
1397 {
1398         std::deque<TreeServer*> list;
1399         std::vector<char*> *ulist = c->GetUsers();
1400         for (unsigned int i = 0; i < ulist->size(); i++)
1401         {
1402                 char* o = (*ulist)[i];
1403                 userrec* otheruser = (userrec*)o;
1404                 if (std::string(otheruser->server) != Srv->GetServerName())
1405                 {
1406                         TreeServer* best = BestRouteTo(otheruser->server);
1407                         if (best)
1408                                 AddThisServer(best,list);
1409                 }
1410         }
1411         return list;
1412 }
1413
1414 bool DoOneToAllButSenderRaw(std::string data,std::string omit,std::string prefix,std::string command,std::deque<std::string> params)
1415 {
1416         TreeServer* omitroute = BestRouteTo(omit);
1417         if ((command == "NOTICE") || (command == "PRIVMSG"))
1418         {
1419                 if ((params.size() >= 2) && (*(params[0].c_str()) != '$'))
1420                 {
1421                         if (*(params[0].c_str()) != '#')
1422                         {
1423                                 // special routing for private messages/notices
1424                                 userrec* d = Srv->FindNick(params[0]);
1425                                 if (d)
1426                                 {
1427                                         std::deque<std::string> par;
1428                                         par.clear();
1429                                         par.push_back(params[0]);
1430                                         par.push_back(":"+params[1]);
1431                                         DoOneToOne(prefix,command,par,d->server);
1432                                         return true;
1433                                 }
1434                         }
1435                         else
1436                         {
1437                                 log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
1438                                 chanrec* c = Srv->FindChannel(params[0]);
1439                                 if (c)
1440                                 {
1441                                         std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1442                                         log(DEBUG,"Got a list of %d servers",list.size());
1443                                         for (unsigned int i = 0; i < list.size(); i++)
1444                                         {
1445                                                 TreeSocket* Sock = list[i]->GetSocket();
1446                                                 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
1447                                                 {
1448                                                         log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
1449                                                         Sock->WriteLine(data);
1450                                                 }
1451                                         }
1452                                         return true;
1453                                 }
1454                         }
1455                 }
1456         }
1457         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1458         {
1459                 TreeServer* Route = TreeRoot->GetChild(x);
1460                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
1461                 {
1462                         TreeSocket* Sock = Route->GetSocket();
1463                         Sock->WriteLine(data);
1464                 }
1465         }
1466         return true;
1467 }
1468
1469 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit)
1470 {
1471         TreeServer* omitroute = BestRouteTo(omit);
1472         std::string FullLine = ":" + prefix + " " + command;
1473         for (unsigned int x = 0; x < params.size(); x++)
1474         {
1475                 FullLine = FullLine + " " + params[x];
1476         }
1477         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1478         {
1479                 TreeServer* Route = TreeRoot->GetChild(x);
1480                 // Send the line IF:
1481                 // The route has a socket (its a direct connection)
1482                 // The route isnt the one to be omitted
1483                 // The route isnt the path to the one to be omitted
1484                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
1485                 {
1486                         TreeSocket* Sock = Route->GetSocket();
1487                         Sock->WriteLine(FullLine);
1488                 }
1489         }
1490         return true;
1491 }
1492
1493 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params)
1494 {
1495         std::string FullLine = ":" + prefix + " " + command;
1496         for (unsigned int x = 0; x < params.size(); x++)
1497         {
1498                 FullLine = FullLine + " " + params[x];
1499         }
1500         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1501         {
1502                 TreeServer* Route = TreeRoot->GetChild(x);
1503                 if (Route->GetSocket())
1504                 {
1505                         TreeSocket* Sock = Route->GetSocket();
1506                         Sock->WriteLine(FullLine);
1507                 }
1508         }
1509         return true;
1510 }
1511
1512 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target)
1513 {
1514         TreeServer* Route = BestRouteTo(target);
1515         if (Route)
1516         {
1517                 std::string FullLine = ":" + prefix + " " + command;
1518                 for (unsigned int x = 0; x < params.size(); x++)
1519                 {
1520                         FullLine = FullLine + " " + params[x];
1521                 }
1522                 if (Route->GetSocket())
1523                 {
1524                         TreeSocket* Sock = Route->GetSocket();
1525                         Sock->WriteLine(FullLine);
1526                 }
1527                 return true;
1528         }
1529         else
1530         {
1531                 return true;
1532         }
1533 }
1534
1535 std::vector<TreeSocket*> Bindings;
1536
1537 void ReadConfiguration(bool rebind)
1538 {
1539         if (rebind)
1540         {
1541                 for (int j =0; j < Conf->Enumerate("bind"); j++)
1542                 {
1543                         std::string Type = Conf->ReadValue("bind","type",j);
1544                         std::string IP = Conf->ReadValue("bind","address",j);
1545                         long Port = Conf->ReadInteger("bind","port",j,true);
1546                         if (Type == "servers")
1547                         {
1548                                 if (IP == "*")
1549                                 {
1550                                         IP = "";
1551                                 }
1552                                 TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
1553                                 if (listener->GetState() == I_LISTENING)
1554                                 {
1555                                         Srv->AddSocket(listener);
1556                                         Bindings.push_back(listener);
1557                                 }
1558                                 else
1559                                 {
1560                                         log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
1561                                         listener->Close();
1562                                         delete listener;
1563                                 }
1564                         }
1565                 }
1566         }
1567         LinkBlocks.clear();
1568         for (int j =0; j < Conf->Enumerate("link"); j++)
1569         {
1570                 Link L;
1571                 L.Name = Conf->ReadValue("link","name",j);
1572                 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
1573                 L.Port = Conf->ReadInteger("link","port",j,true);
1574                 L.SendPass = Conf->ReadValue("link","sendpass",j);
1575                 L.RecvPass = Conf->ReadValue("link","recvpass",j);
1576                 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
1577                 L.NextConnectTime = time(NULL) + L.AutoConnect;
1578                 LinkBlocks.push_back(L);
1579                 log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
1580         }
1581 }
1582
1583
1584 class ModuleSpanningTree : public Module
1585 {
1586         std::vector<TreeSocket*> Bindings;
1587         int line;
1588         int NumServers;
1589
1590  public:
1591
1592         ModuleSpanningTree()
1593         {
1594                 Srv = new Server;
1595                 Conf = new ConfigReader;
1596                 Bindings.clear();
1597
1598                 // Create the root of the tree
1599                 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
1600
1601                 ReadConfiguration(true);
1602         }
1603
1604         void ShowLinks(TreeServer* Current, userrec* user, int hops)
1605         {
1606                 std::string Parent = TreeRoot->GetName();
1607                 if (Current->GetParent())
1608                 {
1609                         Parent = Current->GetParent()->GetName();
1610                 }
1611                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1612                 {
1613                         ShowLinks(Current->GetChild(q),user,hops+1);
1614                 }
1615                 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),hops,Current->GetDesc().c_str());
1616         }
1617
1618         int CountLocalServs()
1619         {
1620                 return TreeRoot->ChildCount();
1621         }
1622
1623         void CountServsRecursive(TreeServer* Current)
1624         {
1625                 NumServers++;
1626                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1627                 {
1628                         CountServsRecursive(Current->GetChild(q));
1629                 }
1630         }
1631
1632         int CountServs()
1633         {
1634                 NumServers = 0;
1635                 CountServsRecursive(TreeRoot);
1636                 return NumServers;
1637         }
1638
1639         void HandleLinks(char** parameters, int pcnt, userrec* user)
1640         {
1641                 ShowLinks(TreeRoot,user,0);
1642                 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
1643                 return;
1644         }
1645
1646         void HandleLusers(char** parameters, int pcnt, userrec* user)
1647         {
1648                 WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),this->CountServs());
1649                 WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
1650                 WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
1651                 WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
1652                 WriteServ(user->fd,"254 %s :I have %d clients and %d servers",user->nick,local_count(),this->CountLocalServs());
1653                 return;
1654         }
1655
1656         // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
1657
1658         void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
1659         {
1660                 if (line < 128)
1661                 {
1662                         for (int t = 0; t < depth; t++)
1663                         {
1664                                 matrix[line][t] = ' ';
1665                         }
1666                         strlcpy(&matrix[line][depth],Current->GetName().c_str(),80);
1667                         line++;
1668                         for (unsigned int q = 0; q < Current->ChildCount(); q++)
1669                         {
1670                                 ShowMap(Current->GetChild(q),user,depth+2,matrix);
1671                         }
1672                 }
1673         }
1674
1675         // Ok, prepare to be confused.
1676         // After much mulling over how to approach this, it struck me that
1677         // the 'usual' way of doing a /MAP isnt the best way. Instead of
1678         // keeping track of a ton of ascii characters, and line by line
1679         // under recursion working out where to place them using multiplications
1680         // and divisons, we instead render the map onto a backplane of characters
1681         // (a character matrix), then draw the branches as a series of "L" shapes
1682         // from the nodes. This is not only friendlier on CPU it uses less stack.
1683
1684         void HandleMap(char** parameters, int pcnt, userrec* user)
1685         {
1686                 // This array represents a virtual screen which we will
1687                 // "scratch" draw to, as the console device of an irc
1688                 // client does not provide for a proper terminal.
1689                 char matrix[128][80];
1690                 for (unsigned int t = 0; t < 128; t++)
1691                 {
1692                         matrix[t][0] = '\0';
1693                 }
1694                 line = 0;
1695                 // The only recursive bit is called here.
1696                 ShowMap(TreeRoot,user,0,matrix);
1697                 // Process each line one by one. The algorithm has a limit of
1698                 // 128 servers (which is far more than a spanning tree should have
1699                 // anyway, so we're ok). This limit can be raised simply by making
1700                 // the character matrix deeper, 128 rows taking 10k of memory.
1701                 for (int l = 1; l < line; l++)
1702                 {
1703                         // scan across the line looking for the start of the
1704                         // servername (the recursive part of the algorithm has placed
1705                         // the servers at indented positions depending on what they
1706                         // are related to)
1707                         int first_nonspace = 0;
1708                         while (matrix[l][first_nonspace] == ' ')
1709                         {
1710                                 first_nonspace++;
1711                         }
1712                         first_nonspace--;
1713                         // Draw the `- (corner) section: this may be overwritten by
1714                         // another L shape passing along the same vertical pane, becoming
1715                         // a |- (branch) section instead.
1716                         matrix[l][first_nonspace] = '-';
1717                         matrix[l][first_nonspace-1] = '`';
1718                         int l2 = l - 1;
1719                         // Draw upwards until we hit the parent server, causing possibly
1720                         // other corners (`-) to become branches (|-)
1721                         while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
1722                         {
1723                                 matrix[l2][first_nonspace-1] = '|';
1724                                 l2--;
1725                         }
1726                 }
1727                 // dump the whole lot to the user. This is the easy bit, honest.
1728                 for (int t = 0; t < line; t++)
1729                 {
1730                         WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
1731                 }
1732                 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
1733                 return;
1734         }
1735
1736         int HandleSquit(char** parameters, int pcnt, userrec* user)
1737         {
1738                 TreeServer* s = FindServerMask(parameters[0]);
1739                 if (s)
1740                 {
1741                         TreeSocket* sock = s->GetSocket();
1742                         if (sock)
1743                         {
1744                                 WriteOpers("*** SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
1745                                 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
1746                                 sock->Close();
1747                         }
1748                         else
1749                         {
1750                                 WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
1751                         }
1752                 }
1753                 else
1754                 {
1755                          WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
1756                 }
1757                 return 1;
1758         }
1759
1760         void DoPingChecks(time_t curtime)
1761         {
1762                 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
1763                 {
1764                         TreeServer* serv = TreeRoot->GetChild(j);
1765                         TreeSocket* sock = serv->GetSocket();
1766                         if (sock)
1767                         {
1768                                 if (curtime >= serv->NextPingTime())
1769                                 {
1770                                         if (serv->AnsweredLastPing())
1771                                         {
1772                                                 sock->WriteLine(":"+Srv->GetServerName()+" PING "+serv->GetName());
1773                                                 serv->SetNextPingTime(curtime + 60);
1774                                         }
1775                                         else
1776                                         {
1777                                                 // they didnt answer, boot them
1778                                                 WriteOpers("*** Server \002%s\002 pinged out",serv->GetName().c_str());
1779                                                 sock->Squit(serv,"Ping timeout");
1780                                                 sock->Close();
1781                                                 return;
1782                                         }
1783                                 }
1784                         }
1785                 }
1786         }
1787
1788         void AutoConnectServers(time_t curtime)
1789         {
1790                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1791                 {
1792                         if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
1793                         {
1794                                 log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
1795                                 x->NextConnectTime = curtime + x->AutoConnect;
1796                                 TreeServer* CheckDupe = FindServer(x->Name);
1797                                 if (!CheckDupe)
1798                                 {
1799                                         // an autoconnected server is not connected. Check if its time to connect it
1800                                         WriteOpers("*** AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
1801                                         TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1802                                         Srv->AddSocket(newsocket);
1803                                 }
1804                         }
1805                 }
1806         }
1807
1808         int HandleVersion(char** parameters, int pcnt, userrec* user)
1809         {
1810                 // we've already checked if pcnt > 0, so this is safe
1811                 TreeServer* found = FindServerMask(parameters[0]);
1812                 if (found)
1813                 {
1814                         std::string Version = found->GetVersion();
1815                         WriteServ(user->fd,"351 %s :%s",user->nick,Version.c_str());
1816                 }
1817                 else
1818                 {
1819                         WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
1820                 }
1821                 return 1;
1822         }
1823
1824         int HandleConnect(char** parameters, int pcnt, userrec* user)
1825         {
1826                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1827                 {
1828                         if (Srv->MatchText(x->Name.c_str(),parameters[0]))
1829                         {
1830                                 TreeServer* CheckDupe = FindServer(x->Name);
1831                                 if (!CheckDupe)
1832                                 {
1833                                         WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",user->nick,x->Name.c_str(),x->IPAddr.c_str(),x->Port);
1834                                         TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1835                                         Srv->AddSocket(newsocket);
1836                                         return 1;
1837                                 }
1838                                 else
1839                                 {
1840                                         WriteServ(user->fd,"NOTICE %s :*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002",user->nick,x->Name.c_str(),CheckDupe->GetParent()->GetName().c_str());
1841                                         return 1;
1842                                 }
1843                         }
1844                 }
1845                 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
1846                 return 1;
1847         }
1848
1849         virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user)
1850         {
1851                 if (command == "CONNECT")
1852                 {
1853                         return this->HandleConnect(parameters,pcnt,user);
1854                 }
1855                 else if (command == "SQUIT")
1856                 {
1857                         return this->HandleSquit(parameters,pcnt,user);
1858                 }
1859                 else if (command == "MAP")
1860                 {
1861                         this->HandleMap(parameters,pcnt,user);
1862                         return 1;
1863                 }
1864                 else if (command == "LUSERS")
1865                 {
1866                         this->HandleLusers(parameters,pcnt,user);
1867                         return 1;
1868                 }
1869                 else if (command == "LINKS")
1870                 {
1871                         this->HandleLinks(parameters,pcnt,user);
1872                         return 1;
1873                 }
1874                 else if ((command == "VERSION") && (pcnt > 0))
1875                 {
1876                         this->HandleVersion(parameters,pcnt,user);
1877                         return 1;
1878                 }
1879                 else if (Srv->IsValidModuleCommand(command, pcnt, user))
1880                 {
1881                         // this bit of code cleverly routes all module commands
1882                         // to all remote severs *automatically* so that modules
1883                         // can just handle commands locally, without having
1884                         // to have any special provision in place for remote
1885                         // commands and linking protocols.
1886                         std::deque<std::string> params;
1887                         params.clear();
1888                         for (int j = 0; j < pcnt; j++)
1889                         {
1890                                 if (strchr(parameters[j],' '))
1891                                 {
1892                                         params.push_back(":" + std::string(parameters[j]));
1893                                 }
1894                                 else
1895                                 {
1896                                         params.push_back(std::string(parameters[j]));
1897                                 }
1898                         }
1899                         DoOneToMany(user->nick,command,params);
1900                 }
1901                 return 0;
1902         }
1903
1904         virtual void OnGetServerDescription(std::string servername,std::string &description)
1905         {
1906                 TreeServer* s = FindServer(servername);
1907                 if (s)
1908                 {
1909                         description = s->GetDesc();
1910                 }
1911         }
1912
1913         virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
1914         {
1915                 if (std::string(source->server) == Srv->GetServerName())
1916                 {
1917                         std::deque<std::string> params;
1918                         params.push_back(dest->nick);
1919                         params.push_back(channel->name);
1920                         DoOneToMany(source->nick,"INVITE",params);
1921                 }
1922         }
1923
1924         virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, std::string topic)
1925         {
1926                 std::deque<std::string> params;
1927                 params.push_back(chan->name);
1928                 params.push_back(":"+topic);
1929                 DoOneToMany(user->nick,"TOPIC",params);
1930         }
1931
1932         virtual void OnWallops(userrec* user, std::string text)
1933         {
1934                 if (std::string(user->server) == Srv->GetServerName())
1935                 {
1936                         std::deque<std::string> params;
1937                         params.push_back(":"+text);
1938                         DoOneToMany(user->nick,"WALLOPS",params);
1939                 }
1940         }
1941
1942         virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
1943         {
1944                 if (target_type == TYPE_USER)
1945                 {
1946                         userrec* d = (userrec*)dest;
1947                         if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1948                         {
1949                                 std::deque<std::string> params;
1950                                 params.clear();
1951                                 params.push_back(d->nick);
1952                                 params.push_back(":"+text);
1953                                 DoOneToOne(user->nick,"NOTICE",params,d->server);
1954                         }
1955                 }
1956                 else
1957                 {
1958                         if (std::string(user->server) == Srv->GetServerName())
1959                         {
1960                                 chanrec *c = (chanrec*)dest;
1961                                 std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1962                                 for (unsigned int i = 0; i < list.size(); i++)
1963                                 {
1964                                         TreeSocket* Sock = list[i]->GetSocket();
1965                                         if (Sock)
1966                                                 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+std::string(c->name)+" :"+text);
1967                                 }
1968                         }
1969                 }
1970         }
1971
1972         virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
1973         {
1974                 if (target_type == TYPE_USER)
1975                 {
1976                         // route private messages which are targetted at clients only to the server
1977                         // which needs to receive them
1978                         userrec* d = (userrec*)dest;
1979                         if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1980                         {
1981                                 std::deque<std::string> params;
1982                                 params.clear();
1983                                 params.push_back(d->nick);
1984                                 params.push_back(":"+text);
1985                                 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
1986                         }
1987                 }
1988                 else
1989                 {
1990                         if (std::string(user->server) == Srv->GetServerName())
1991                         {
1992                                 chanrec *c = (chanrec*)dest;
1993                                 std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1994                                 for (unsigned int i = 0; i < list.size(); i++)
1995                                 {
1996                                         TreeSocket* Sock = list[i]->GetSocket();
1997                                         if (Sock)
1998                                                 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+std::string(c->name)+" :"+text);
1999                                 }
2000                         }
2001                 }
2002         }
2003
2004         virtual void OnBackgroundTimer(time_t curtime)
2005         {
2006                 AutoConnectServers(curtime);
2007                 DoPingChecks(curtime);
2008         }
2009
2010         virtual void OnUserJoin(userrec* user, chanrec* channel)
2011         {
2012                 // Only do this for local users
2013                 if (std::string(user->server) == Srv->GetServerName())
2014                 {
2015                         std::deque<std::string> params;
2016                         params.clear();
2017                         params.push_back(channel->name);
2018                         if (*channel->key)
2019                         {
2020                                 // if the channel has a key, force the join by emulating the key.
2021                                 params.push_back(channel->key);
2022                         }
2023                         if (channel->GetUserCounter() > 1)
2024                         {
2025                                 // not the first in the channel
2026                                 DoOneToMany(user->nick,"JOIN",params);
2027                         }
2028                         else
2029                         {
2030                                 // first in the channel, set up their permissions
2031                                 // and the channel TS with FJOIN.
2032                                 char ts[24];
2033                                 snprintf(ts,24,"%lu",(unsigned long)channel->age);
2034                                 params.clear();
2035                                 params.push_back(channel->name);
2036                                 params.push_back(ts);
2037                                 params.push_back("@"+std::string(user->nick));
2038                                 DoOneToMany(Srv->GetServerName(),"FJOIN",params);
2039                         }
2040                 }
2041         }
2042
2043         virtual void OnChangeHost(userrec* user, std::string newhost)
2044         {
2045                 // only occurs for local clients
2046                 std::deque<std::string> params;
2047                 params.push_back(newhost);
2048                 DoOneToMany(user->nick,"FHOST",params);
2049         }
2050
2051         virtual void OnChangeName(userrec* user, std::string gecos)
2052         {
2053                 // only occurs for local clients
2054                 std::deque<std::string> params;
2055                 params.push_back(gecos);
2056                 DoOneToMany(user->nick,"FNAME",params);
2057         }
2058
2059         virtual void OnUserPart(userrec* user, chanrec* channel)
2060         {
2061                 if (std::string(user->server) == Srv->GetServerName())
2062                 {
2063                         std::deque<std::string> params;
2064                         params.clear();
2065                         params.push_back(channel->name);
2066                         DoOneToMany(user->nick,"PART",params);
2067                 }
2068         }
2069
2070         virtual void OnUserConnect(userrec* user)
2071         {
2072                 char agestr[MAXBUF];
2073                 if (std::string(user->server) == Srv->GetServerName())
2074                 {
2075                         std::deque<std::string> params;
2076                         snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
2077                         params.clear();
2078                         params.push_back(agestr);
2079                         params.push_back(user->nick);
2080                         params.push_back(user->host);
2081                         params.push_back(user->dhost);
2082                         params.push_back(user->ident);
2083                         params.push_back("+"+std::string(user->modes));
2084                         params.push_back(user->ip);
2085                         params.push_back(":"+std::string(user->fullname));
2086                         DoOneToMany(Srv->GetServerName(),"NICK",params);
2087                 }
2088         }
2089
2090         virtual void OnUserQuit(userrec* user, std::string reason)
2091         {
2092                 if (std::string(user->server) == Srv->GetServerName())
2093                 {
2094                         std::deque<std::string> params;
2095                         params.push_back(":"+reason);
2096                         DoOneToMany(user->nick,"QUIT",params);
2097                 }
2098         }
2099
2100         virtual void OnUserPostNick(userrec* user, std::string oldnick)
2101         {
2102                 if (std::string(user->server) == Srv->GetServerName())
2103                 {
2104                         std::deque<std::string> params;
2105                         params.push_back(user->nick);
2106                         DoOneToMany(oldnick,"NICK",params);
2107                 }
2108         }
2109
2110         virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason)
2111         {
2112                 if (std::string(source->server) == Srv->GetServerName())
2113                 {
2114                         std::deque<std::string> params;
2115                         params.push_back(chan->name);
2116                         params.push_back(user->nick);
2117                         params.push_back(":"+reason);
2118                         DoOneToMany(source->nick,"KICK",params);
2119                 }
2120         }
2121
2122         virtual void OnRemoteKill(userrec* source, userrec* dest, std::string reason)
2123         {
2124                 std::deque<std::string> params;
2125                 params.push_back(dest->nick);
2126                 params.push_back(":"+reason);
2127                 DoOneToMany(source->nick,"KILL",params);
2128         }
2129
2130         virtual void OnRehash(std::string parameter)
2131         {
2132                 if (parameter != "")
2133                 {
2134                         std::deque<std::string> params;
2135                         params.push_back(parameter);
2136                         DoOneToMany(Srv->GetServerName(),"REHASH",params);
2137                         // check for self
2138                         if (Srv->MatchText(Srv->GetServerName(),parameter))
2139                         {
2140                                 Srv->SendOpers("*** Remote rehash initiated from server \002"+Srv->GetServerName()+"\002.");
2141                                 Srv->RehashServer();
2142                         }
2143                 }
2144                 ReadConfiguration(false);
2145         }
2146
2147         // note: the protocol does not allow direct umode +o except
2148         // via NICK with 8 params. sending OPERTYPE infers +o modechange
2149         // locally.
2150         virtual void OnOper(userrec* user, std::string opertype)
2151         {
2152                 if (std::string(user->server) == Srv->GetServerName())
2153                 {
2154                         std::deque<std::string> params;
2155                         params.push_back(opertype);
2156                         DoOneToMany(user->nick,"OPERTYPE",params);
2157                 }
2158         }
2159
2160         virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
2161         {
2162                 if (std::string(user->server) == Srv->GetServerName())
2163                 {
2164                         if (target_type == TYPE_USER)
2165                         {
2166                                 userrec* u = (userrec*)dest;
2167                                 std::deque<std::string> params;
2168                                 params.push_back(u->nick);
2169                                 params.push_back(text);
2170                                 DoOneToMany(user->nick,"MODE",params);
2171                         }
2172                         else
2173                         {
2174                                 chanrec* c = (chanrec*)dest;
2175                                 std::deque<std::string> params;
2176                                 params.push_back(c->name);
2177                                 params.push_back(text);
2178                                 DoOneToMany(user->nick,"MODE",params);
2179                         }
2180                 }
2181         }
2182
2183         virtual void ProtoSendMode(void* opaque, int target_type, void* target, std::string modeline)
2184         {
2185                 TreeSocket* s = (TreeSocket*)opaque;
2186                 if (target)
2187                 {
2188                         if (target_type == TYPE_USER)
2189                         {
2190                                 userrec* u = (userrec*)target;
2191                                 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+u->nick+" "+modeline);
2192                         }
2193                         else
2194                         {
2195                                 chanrec* c = (chanrec*)target;
2196                                 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" "+modeline);
2197                         }
2198                 }
2199         }
2200
2201         virtual ~ModuleSpanningTree()
2202         {
2203                 delete Srv;
2204         }
2205
2206         virtual Version GetVersion()
2207         {
2208                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
2209         }
2210 };
2211
2212
2213 class ModuleSpanningTreeFactory : public ModuleFactory
2214 {
2215  public:
2216         ModuleSpanningTreeFactory()
2217         {
2218         }
2219
2220         ~ModuleSpanningTreeFactory()
2221         {
2222         }
2223
2224         virtual Module * CreateModule()
2225         {
2226                 TreeProtocolModule = new ModuleSpanningTree;
2227                 return TreeProtocolModule;
2228         }
2229
2230 };
2231
2232
2233 extern "C" void * init_module( void )
2234 {
2235         return new ModuleSpanningTreeFactory;
2236 }