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