src/modules/m_spanningtree.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include <stdio.h>
  20 #include <vector>
  21 #include <deque>
  22 #include "globals.h"
  23 #include "inspircd_config.h"
  24 #ifdef GCC3
  25 #include <ext/hash_map>
  26 #else
  27 #include <hash_map>
  28 #endif
  29 #include "users.h"
  30 #include "channels.h"
  31 #include "modules.h"
  32 #include "socket.h"
  33 #include "helperfuncs.h"
  34 #include "inspircd.h"
  35 #include "inspstring.h"
  36 #include "hashcomp.h"
  37 #include "message.h"
  38
  39 #ifdef GCC3
  40 #define nspace __gnu_cxx
  41 #else
  42 #define nspace std
  43 #endif
  44
  45 class ModuleSpanningTree;
  46 static ModuleSpanningTree* TreeProtocolModule;
  47
  48 extern std::vector<Module*> modules;
  49 extern std::vector<ircd_module*> factory;
  50 extern int MODCOUNT;
  51
  52 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
  53
  54 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
  55 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
  56
  57 extern user_hash clientlist;
  58 extern chan_hash chanlist;
  59
  60 class TreeServer;
  61 class TreeSocket;
  62
  63 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target);
  64 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit);
  65 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params);
  66 bool DoOneToAllButSenderRaw(std::string data,std::string omit, std::string prefix,std::string command,std::deque<std::string> params);
  67 void ReadConfiguration(bool rebind);
  68
  69 class TreeServer
  70 {
  71         TreeServer* Parent;
  72         std::vector<TreeServer*> Children;
  73         std::string ServerName;
  74         std::string ServerDesc;
  75         std::string VersionString;
  76         int UserCount;
  77         int OperCount;
  78         TreeSocket* Socket;     // for directly connected servers this points at the socket object
  79         time_t NextPing;
  80         bool LastPingWasGood;
  81
  82  public:
  83
  84         TreeServer()
  85         {
  86                 Parent = NULL;
  87                 ServerName = "";
  88                 ServerDesc = "";
  89                 VersionString = "";
  90                 UserCount = OperCount = 0;
  91                 VersionString = GetVersionString();
  92         }
  93
  94         TreeServer(std::string Name, std::string Desc) : ServerName(Name), ServerDesc(Desc)
  95         {
  96                 Parent = NULL;
  97                 VersionString = "";
  98                 UserCount = OperCount = 0;
  99                 VersionString = GetVersionString();
 100         }
 101
 102         TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name), ServerDesc(Desc), Socket(Sock)
 103         {
 104                 VersionString = "";
 105                 UserCount = OperCount = 0;
 106                 this->SetNextPingTime(time(NULL) + 60);
 107                 this->SetPingFlag();
 108         }
 109
 110         std::string GetName()
 111         {
 112                 return this->ServerName;
 113         }
 114
 115         std::string GetDesc()
 116         {
 117                 return this->ServerDesc;
 118         }
 119
 120         std::string GetVersion()
 121         {
 122                 return this->VersionString;
 123         }
 124
 125         void SetNextPingTime(time_t t)
 126         {
 127                 this->NextPing = t;
 128                 LastPingWasGood = false;
 129         }
 130
 131         time_t NextPingTime()
 132         {
 133                 return this->NextPing;
 134         }
 135
 136         bool AnsweredLastPing()
 137         {
 138                 return LastPingWasGood;
 139         }
 140
 141         void SetPingFlag()
 142         {
 143                 LastPingWasGood = true;
 144         }
 145
 146         int GetUserCount()
 147         {
 148                 return this->UserCount;
 149         }
 150
 151         int GetOperCount()
 152         {
 153                 return this->OperCount;
 154         }
 155
 156         TreeSocket* GetSocket()
 157         {
 158                 return this->Socket;
 159         }
 160
 161         TreeServer* GetParent()
 162         {
 163                 return this->Parent;
 164         }
 165
 166         void SetVersion(std::string Version)
 167         {
 168                 VersionString = Version;
 169         }
 170
 171         unsigned int ChildCount()
 172         {
 173                 return Children.size();
 174         }
 175
 176         TreeServer* GetChild(unsigned int n)
 177         {
 178                 if (n < Children.size())
 179                 {
 180                         return Children[n];
 181                 }
 182                 else
 183                 {
 184                         return NULL;
 185                 }
 186         }
 187
 188         void AddChild(TreeServer* Child)
 189         {
 190                 Children.push_back(Child);
 191         }
 192
 193         bool DelChild(TreeServer* Child)
 194         {
 195                 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 196                 {
 197                         if (*a == Child)
 198                         {
 199                                 Children.erase(a);
 200                                 return true;
 201                         }
 202                 }
 203                 return false;
 204         }
 205
 206         // removes child nodes of this node, and of that node, etc etc
 207         bool Tidy()
 208         {
 209                 bool stillchildren = true;
 210                 while (stillchildren)
 211                 {
 212                         stillchildren = false;
 213                         for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 214                         {
 215                                 TreeServer* s = (TreeServer*)*a;
 216                                 s->Tidy();
 217                                 Children.erase(a);
 218                                 delete s;
 219                                 stillchildren = true;
 220                                 break;
 221                         }
 222                 }
 223                 return true;
 224         }
 225 };
 226
 227 class Link
 228 {
 229  public:
 230          std::string Name;
 231          std::string IPAddr;
 232          int Port;
 233          std::string SendPass;
 234          std::string RecvPass;
 235          unsigned long AutoConnect;
 236          time_t NextConnectTime;
 237 };
 238
 239 /* $ModDesc: Povides a spanning tree server link protocol */
 240
 241 Server *Srv;
 242 ConfigReader *Conf;
 243 TreeServer *TreeRoot;
 244 std::vector<Link> LinkBlocks;
 245
 246 TreeServer* RouteEnumerate(TreeServer* Current, std::string ServerName)
 247 {
 248         if (Current->GetName() == ServerName)
 249                 return Current;
 250         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 251         {
 252                 TreeServer* found = RouteEnumerate(Current->GetChild(q),ServerName);
 253                 if (found)
 254                 {
 255                         return found;
 256                 }
 257         }
 258         return NULL;
 259 }
 260
 261 // Returns the locally connected server we must route a
 262 // message through to reach server 'ServerName'. This
 263 // only applies to one-to-one and not one-to-many routing.
 264 TreeServer* BestRouteTo(std::string ServerName)
 265 {
 266         if (ServerName.c_str() == TreeRoot->GetName())
 267         {
 268                 return NULL;
 269         }
 270         // first, find the server by recursively walking the tree
 271         TreeServer* Found = RouteEnumerate(TreeRoot,ServerName);
 272         // did we find it? If not, they did something wrong, abort.
 273         if (!Found)
 274         {
 275                 return NULL;
 276         }
 277         else
 278         {
 279                 // The server exists, follow its parent nodes until
 280                 // the parent of the current is 'TreeRoot', we know
 281                 // then that this is a directly-connected server.
 282                 while ((Found) && (Found->GetParent() != TreeRoot))
 283                 {
 284                         Found = Found->GetParent();
 285                 }
 286                 return Found;
 287         }
 288 }
 289
 290 bool LookForServer(TreeServer* Current, std::string ServerName)
 291 {
 292         if (ServerName == Current->GetName())
 293                 return true;
 294         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 295         {
 296                 if (LookForServer(Current->GetChild(q),ServerName))
 297                         return true;
 298         }
 299         return false;
 300 }
 301
 302 TreeServer* Found;
 303
 304 void RFindServer(TreeServer* Current, std::string ServerName)
 305 {
 306         if ((ServerName == Current->GetName()) && (!Found))
 307         {
 308                 Found = Current;
 309                 return;
 310         }
 311         if (!Found)
 312         {
 313                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 314                 {
 315                         if (!Found)
 316                                 RFindServer(Current->GetChild(q),ServerName);
 317                 }
 318         }
 319         return;
 320 }
 321
 322 void RFindServerMask(TreeServer* Current, std::string ServerName)
 323 {
 324         if (Srv->MatchText(Current->GetName(),ServerName) && (!Found))
 325         {
 326                 Found = Current;
 327                 return;
 328         }
 329         if (!Found)
 330         {
 331                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 332                 {
 333                         if (!Found)
 334                                 RFindServerMask(Current->GetChild(q),ServerName);
 335                 }
 336         }
 337 }
 338
 339 TreeServer* FindServer(std::string ServerName)
 340 {
 341         Found = NULL;
 342         RFindServer(TreeRoot,ServerName);
 343         return Found;
 344 }
 345
 346 TreeServer* FindServerMask(std::string ServerName)
 347 {
 348         Found = NULL;
 349         RFindServerMask(TreeRoot,ServerName);
 350         return Found;
 351 }
 352
 353 bool IsServer(std::string ServerName)
 354 {
 355         return LookForServer(TreeRoot,ServerName);
 356 }
 357
 358 class TreeSocket : public InspSocket
 359 {
 360         std::string myhost;
 361         std::string in_buffer;
 362         ServerState LinkState;
 363         std::string InboundServerName;
 364         std::string InboundDescription;
 365         int num_lost_users;
 366         int num_lost_servers;
 367         time_t NextPing;
 368         bool LastPingWasGood;
 369
 370  public:
 371
 372         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
 373                 : InspSocket(host, port, listening, maxtime)
 374         {
 375                 myhost = host;
 376                 this->LinkState = LISTENER;
 377         }
 378
 379         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
 380                 : InspSocket(host, port, listening, maxtime)
 381         {
 382                 myhost = ServerName;
 383                 this->LinkState = CONNECTING;
 384         }
 385
 386         TreeSocket(int newfd, char* ip)
 387                 : InspSocket(newfd, ip)
 388         {
 389                 this->LinkState = WAIT_AUTH_1;
 390         }
 391
 392         virtual bool OnConnected()
 393         {
 394                 if (this->LinkState == CONNECTING)
 395                 {
 396                         Srv->SendOpers("*** Connection to "+myhost+"["+this->GetIP()+"] established.");
 397                         // we should send our details here.
 398                         // if the other side is satisfied, they send theirs.
 399                         // we do not need to change state here.
 400                         for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 401                         {
 402                                 if (x->Name == this->myhost)
 403                                 {
 404                                         // found who we're supposed to be connecting to, send the neccessary gubbins.
 405                                         this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
 406                                         return true;
 407                                 }
 408                         }
 409                 }
 410                 return true;
 411         }
 412
 413         virtual void OnError(InspSocketError e)
 414         {
 415         }
 416
 417         virtual int OnDisconnect()
 418         {
 419                 return true;
 420         }
 421
 422         // recursively send the server tree with distances as hops
 423         void SendServers(TreeServer* Current, TreeServer* s, int hops)
 424         {
 425                 char command[1024];
 426                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 427                 {
 428                         TreeServer* recursive_server = Current->GetChild(q);
 429                         if (recursive_server != s)
 430                         {
 431                                 // :source.server SERVER server.name hops :Description
 432                                 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
 433                                 this->WriteLine(command);
 434                                 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
 435                                 // down to next level
 436                                 this->SendServers(recursive_server, s, hops+1);
 437                         }
 438                 }
 439         }
 440
 441         void SquitServer(TreeServer* Current)
 442         {
 443                 // recursively squit the servers attached to 'Current'
 444                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 445                 {
 446                         TreeServer* recursive_server = Current->GetChild(q);
 447                         this->SquitServer(recursive_server);
 448                 }
 449                 // Now we've whacked the kids, whack self
 450                 num_lost_servers++;
 451                 bool quittingpeople = true;
 452                 while (quittingpeople)
 453                 {
 454                         quittingpeople = false;
 455                         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 456                         {
 457                                 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
 458                                 {
 459                                         Srv->QuitUser(u->second,Current->GetName()+" "+std::string(Srv->GetServerName()));
 460                                         num_lost_users++;
 461                                         quittingpeople = true;
 462                                         break;
 463                                 }
 464                         }
 465                 }
 466         }
 467
 468         void Squit(TreeServer* Current,std::string reason)
 469         {
 470                 if (Current)
 471                 {
 472                         std::deque<std::string> params;
 473                         params.push_back(Current->GetName());
 474                         params.push_back(":"+reason);
 475                         DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
 476                         if (Current->GetParent() == TreeRoot)
 477                         {
 478                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
 479                         }
 480                         else
 481                         {
 482                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
 483                         }
 484                         num_lost_servers = 0;
 485                         num_lost_users = 0;
 486                         SquitServer(Current);
 487                         Current->Tidy();
 488                         Current->GetParent()->DelChild(Current);
 489                         delete Current;
 490                         WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
 491                 }
 492                 else
 493                 {
 494                         log(DEFAULT,"Squit from unknown server");
 495                 }
 496         }
 497
 498         bool ForceMode(std::string source, std::deque<std::string> params)
 499         {
 500                 userrec* who = new userrec;
 501                 who->fd = FD_MAGIC_NUMBER;
 502                 if (params.size() < 2)
 503                         return true;
 504                 char* modelist[255];
 505                 for (unsigned int q = 0; q < params.size(); q++)
 506                 {
 507                         modelist[q] = (char*)params[q].c_str();
 508                 }
 509                 Srv->SendMode(modelist,params.size(),who);
 510                 DoOneToAllButSender(source,"FMODE",params,source);
 511                 delete who;
 512                 return true;
 513         }
 514
 515         bool ForceTopic(std::string source, std::deque<std::string> params)
 516         {
 517                 // FTOPIC %s %lu %s :%s
 518                 if (params.size() != 4)
 519                         return true;
 520                 std::string channel = params[0];
 521                 time_t ts = atoi(params[1].c_str());
 522                 std::string setby = params[2];
 523                 std::string topic = params[3];
 524
 525                 chanrec* c = Srv->FindChannel(channel);
 526                 if (c)
 527                 {
 528                         if ((ts >= c->topicset) || (!*c->topic))
 529                         {
 530                                 strlcpy(c->topic,topic.c_str(),MAXTOPIC);
 531                                 strlcpy(c->setby,setby.c_str(),NICKMAX);
 532                                 c->topicset = ts;
 533                                 WriteChannelWithServ((char*)source.c_str(), c, "TOPIC %s :%s", c->name, c->topic);
 534                         }
 535
 536                 }
 537
 538                 // all done, send it on its way
 539                 params[3] = ":" + params[3];
 540                 DoOneToAllButSender(source,"FTOPIC",params,source);
 541
 542                 return true;
 543         }
 544
 545         bool ForceJoin(std::string source, std::deque<std::string> params)
 546         {
 547                 if (params.size() < 3)
 548                         return true;
 549
 550                 char first[MAXBUF];
 551                 char modestring[MAXBUF];
 552                 char* mode_users[127];
 553                 mode_users[0] = first;
 554                 mode_users[1] = modestring;
 555                 strcpy(mode_users[1],"+");
 556                 unsigned int modectr = 2;
 557
 558                 userrec* who = NULL;
 559                 std::string channel = params[0];
 560                 time_t TS = atoi(params[1].c_str());
 561                 char* key = "";
 562
 563                 chanrec* chan = Srv->FindChannel(channel);
 564                 if (chan)
 565                 {
 566                         key = chan->key;
 567                 }
 568                 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
 569
 570                 // default is a high value, which if we dont have this
 571                 // channel will let the other side apply their modes.
 572                 time_t ourTS = time(NULL)+600;
 573                 chanrec* us = Srv->FindChannel(channel);
 574                 if (us)
 575                 {
 576                         ourTS = us->age;
 577                 }
 578
 579                 log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
 580
 581                 // do this first, so our mode reversals are correctly received by other servers
 582                 // if there is a TS collision.
 583                 DoOneToAllButSender(source,"FJOIN",params,source);
 584
 585                 for (unsigned int usernum = 2; usernum < params.size(); usernum++)
 586                 {
 587                         // process one channel at a time, applying modes.
 588                         char* usr = (char*)params[usernum].c_str();
 589                         char permissions = *usr;
 590                         switch (permissions)
 591                         {
 592                                 case '@':
 593                                         usr++;
 594                                         mode_users[modectr++] = usr;
 595                                         strlcat(modestring,"o",MAXBUF);
 596                                 break;
 597                                 case '%':
 598                                         usr++;
 599                                         mode_users[modectr++] = usr;
 600                                         strlcat(modestring,"h",MAXBUF);
 601                                 break;
 602                                 case '+':
 603                                         usr++;
 604                                         mode_users[modectr++] = usr;
 605                                         strlcat(modestring,"v",MAXBUF);
 606                                 break;
 607                         }
 608                         who = Srv->FindNick(usr);
 609                         if (who)
 610                         {
 611                                 Srv->JoinUserToChannel(who,channel,key);
 612                                 if (modectr >= (MAXMODES-1))
 613                                 {
 614                                         // theres a mode for this user. push them onto the mode queue, and flush it
 615                                         // if there are more than MAXMODES to go.
 616                                         if (ourTS >= TS)
 617                                         {
 618                                                 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
 619                                                 Srv->SendMode(mode_users,modectr,who);
 620                                         }
 621                                         else
 622                                         {
 623                                                 log(DEBUG,"Their channel newer than ours, bouncing their modes");
 624                                                 // bouncy bouncy!
 625                                                 std::deque<std::string> params;
 626                                                 // modes are now being UNSET...
 627                                                 *mode_users[1] = '-';
 628                                                 for (unsigned int x = 0; x < modectr; x++)
 629                                                 {
 630                                                         params.push_back(mode_users[x]);
 631                                                 }
 632                                                 // tell everyone to bounce the modes. bad modes, bad!
 633                                                 DoOneToMany(Srv->GetServerName(),"FMODE",params);
 634                                         }
 635                                         strcpy(mode_users[1],"+");
 636                                         modectr = 2;
 637                                 }
 638                         }
 639                 }
 640                 // there werent enough modes built up to flush it during FJOIN,
 641                 // or, there are a number left over. flush them out.
 642                 if ((modectr > 2) && (who))
 643                 {
 644                         if (ourTS >= TS)
 645                         {
 646                                 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
 647                                 Srv->SendMode(mode_users,modectr,who);
 648                         }
 649                         else
 650                         {
 651                                 log(DEBUG,"Their channel newer than ours, bouncing their modes");
 652                                 std::deque<std::string> params;
 653                                 *mode_users[1] = '-';
 654                                 for (unsigned int x = 0; x < modectr; x++)
 655                                 {
 656                                         params.push_back(mode_users[x]);
 657                                 }
 658                                 DoOneToMany(Srv->GetServerName(),"FMODE",params);
 659                         }
 660                 }
 661                 return true;
 662         }
 663
 664         bool IntroduceClient(std::string source, std::deque<std::string> params)
 665         {
 666                 if (params.size() < 8)
 667                         return true;
 668                 // NICK age nick host dhost ident +modes ip :gecos
 669                 //       0   1    2    3      4     5    6   7
 670                 std::string nick = params[1];
 671                 std::string host = params[2];
 672                 std::string dhost = params[3];
 673                 std::string ident = params[4];
 674                 time_t age = atoi(params[0].c_str());
 675                 std::string modes = params[5];
 676                 while (*(modes.c_str()) == '+')
 677                 {
 678                         char* m = (char*)modes.c_str();
 679                         m++;
 680                         modes = m;
 681                 }
 682                 std::string ip = params[6];
 683                 std::string gecos = params[7];
 684                 char* tempnick = (char*)nick.c_str();
 685                 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
 686
 687                 user_hash::iterator iter;
 688                 iter = clientlist.find(tempnick);
 689                 if (iter != clientlist.end())
 690                 {
 691                         // nick collision
 692                         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);
 693                         this->WriteLine(":"+Srv->GetServerName()+" KILL "+tempnick+" :Nickname collision");
 694                         return true;
 695                 }
 696
 697                 clientlist[tempnick] = new userrec();
 698                 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
 699                 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
 700                 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
 701                 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
 702                 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
 703                 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
 704                 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
 705                 clientlist[tempnick]->registered = 7;
 706                 clientlist[tempnick]->signon = age;
 707                 strlcpy(clientlist[tempnick]->modes, modes.c_str(),53);
 708                 strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
 709                 for (int i = 0; i < MAXCHANS; i++)
 710                 {
 711                         clientlist[tempnick]->chans[i].channel = NULL;
 712                         clientlist[tempnick]->chans[i].uc_modes = 0;
 713                 }
 714                 params[7] = ":" + params[7];
 715                 DoOneToAllButSender(source,"NICK",params,source);
 716                 return true;
 717         }
 718
 719         void SendFJoins(TreeServer* Current, chanrec* c)
 720         {
 721                 char list[MAXBUF];
 722                 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
 723                 std::vector<char*> *ulist = c->GetUsers();
 724                 for (unsigned int i = 0; i < ulist->size(); i++)
 725                 {
 726                         char* o = (*ulist)[i];
 727                         userrec* otheruser = (userrec*)o;
 728                         strlcat(list," ",MAXBUF);
 729                         strlcat(list,cmode(otheruser,c),MAXBUF);
 730                         strlcat(list,otheruser->nick,MAXBUF);
 731                         if (strlen(list)>(480-NICKMAX))
 732                         {
 733                                 this->WriteLine(list);
 734                                 snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
 735                         }
 736                 }
 737                 if (list[strlen(list)-1] != ':')
 738                 {
 739                         this->WriteLine(list);
 740                 }
 741         }
 742
 743         void SendChannelModes(TreeServer* Current)
 744         {
 745                 char data[MAXBUF];
 746                 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
 747                 {
 748                         SendFJoins(Current, c->second);
 749                         snprintf(data,MAXBUF,":%s FMODE %s +%s",Srv->GetServerName().c_str(),c->second->name,chanmodes(c->second));
 750                         this->WriteLine(data);
 751                         if (*c->second->topic)
 752                         {
 753                                 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);
 754                                 this->WriteLine(data);
 755                         }
 756                         for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
 757                         {
 758                                 snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
 759                                 this->WriteLine(data);
 760                         }
 761                         FOREACH_MOD OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this);
 762                 }
 763         }
 764
 765         // send all users and their channels
 766         void SendUsers(TreeServer* Current)
 767         {
 768                 char data[MAXBUF];
 769                 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 770                 {
 771                         if (u->second->registered == 7)
 772                         {
 773                                 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);
 774                                 this->WriteLine(data);
 775                                 if (strchr(u->second->modes,'o'))
 776                                 {
 777                                         this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
 778                                 }
 779                                 //char* chl = chlist(u->second,u->second);
 780                                 //if (*chl)
 781                                 //{
 782                                 //      this->WriteLine(":"+std::string(u->second->nick)+" FJOIN "+std::string(chl));
 783                                 //}
 784                                 FOREACH_MOD OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this);
 785                         }
 786                 }
 787         }
 788
 789         void DoBurst(TreeServer* s)
 790         {
 791                 Srv->SendOpers("*** Bursting to "+s->GetName()+".");
 792                 this->WriteLine("BURST");
 793                 // send our version string
 794                 this->WriteLine(":"+Srv->GetServerName()+" VERSION :"+GetVersionString());
 795                 // Send server tree
 796                 this->SendServers(TreeRoot,s,1);
 797                 // Send users and their channels
 798                 this->SendUsers(s);
 799                 // Send everything else (channel modes etc)
 800                 this->SendChannelModes(s);
 801                 this->WriteLine("ENDBURST");
 802         }
 803
 804         virtual bool OnDataReady()
 805         {
 806                 char* data = this->Read();
 807                 if (data)
 808                 {
 809                         this->in_buffer += data;
 810                         while (in_buffer.find("\n") != std::string::npos)
 811                         {
 812                                 char* line = (char*)in_buffer.c_str();
 813                                 std::string ret = "";
 814                                 while ((*line != '\n') && (strlen(line)))
 815                                 {
 816                                         ret = ret + *line;
 817                                         line++;
 818                                 }
 819                                 if ((*line == '\n') || (*line == '\r'))
 820                                         line++;
 821                                 in_buffer = line;
 822                                 if (!this->ProcessLine(ret))
 823                                 {
 824                                         return false;
 825                                 }
 826                         }
 827                 }
 828                 return (data != NULL);
 829         }
 830
 831         int WriteLine(std::string line)
 832         {
 833                 return this->Write(line + "\r\n");
 834         }
 835
 836         bool Error(std::deque<std::string> params)
 837         {
 838                 if (params.size() < 1)
 839                         return false;
 840                 std::string Errmsg = params[0];
 841                 std::string SName = myhost;
 842                 if (InboundServerName != "")
 843                 {
 844                         SName = InboundServerName;
 845                 }
 846                 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
 847                 // we will return false to cause the socket to close.
 848                 return false;
 849         }
 850
 851         bool OperType(std::string prefix, std::deque<std::string> params)
 852         {
 853                 if (params.size() != 1)
 854                         return true;
 855                 std::string opertype = params[0];
 856                 userrec* u = Srv->FindNick(prefix);
 857                 if (u)
 858                 {
 859                         strlcpy(u->oper,opertype.c_str(),NICKMAX);
 860                         if (!strchr(u->modes,'o'))
 861                         {
 862                                 strcat(u->modes,"o");
 863                         }
 864                         DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
 865                 }
 866                 return true;
 867         }
 868
 869         bool RemoteRehash(std::string prefix, std::deque<std::string> params)
 870         {
 871                 if (params.size() < 1)
 872                         return true;
 873                 std::string servermask = params[0];
 874                 if (Srv->MatchText(Srv->GetServerName(),servermask))
 875                 {
 876                         Srv->SendOpers("*** Remote rehash initiated from server \002"+prefix+"\002.");
 877                         Srv->RehashServer();
 878                         ReadConfiguration(false);
 879                 }
 880                 DoOneToAllButSender(prefix,"REHASH",params,prefix);
 881                 return true;
 882         }
 883
 884         bool RemoteKill(std::string prefix, std::deque<std::string> params)
 885         {
 886                 if (params.size() != 2)
 887                         return true;
 888                 std::string nick = params[0];
 889                 std::string reason = params[1];
 890                 userrec* u = Srv->FindNick(prefix);
 891                 userrec* who = Srv->FindNick(nick);
 892                 if (who)
 893                 {
 894                         std::string sourceserv = prefix;
 895                         if (u)
 896                         {
 897                                 sourceserv = u->server;
 898                         }
 899                         params[1] = ":" + params[1];
 900                         DoOneToAllButSender(prefix,"KILL",params,sourceserv);
 901                         Srv->QuitUser(who,reason);
 902                 }
 903                 return true;
 904         }
 905
 906         bool LocalPong(std::string prefix, std::deque<std::string> params)
 907         {
 908                 if (params.size() < 1)
 909                         return true;
 910                 TreeServer* ServerSource = FindServer(prefix);
 911                 if (ServerSource)
 912                 {
 913                         ServerSource->SetPingFlag();
 914                 }
 915                 return true;
 916         }
 917
 918         bool ServerVersion(std::string prefix, std::deque<std::string> params)
 919         {
 920                 if (params.size() < 1)
 921                         return true;
 922                 TreeServer* ServerSource = FindServer(prefix);
 923                 if (ServerSource)
 924                 {
 925                         ServerSource->SetVersion(params[0]);
 926                 }
 927                 params[0] = ":" + params[0];
 928                 DoOneToAllButSender(prefix,"VERSION",params,prefix);
 929                 return true;
 930         }
 931
 932         bool ChangeHost(std::string prefix, std::deque<std::string> params)
 933         {
 934                 if (params.size() < 1)
 935                         return true;
 936                 userrec* u = Srv->FindNick(prefix);
 937                 if (u)
 938                 {
 939                         Srv->ChangeHost(u,params[0]);
 940                         DoOneToAllButSender(prefix,"FHOST",params,u->server);
 941                 }
 942                 return true;
 943         }
 944
 945         bool ChangeName(std::string prefix, std::deque<std::string> params)
 946         {
 947                 if (params.size() < 1)
 948                         return true;
 949                 userrec* u = Srv->FindNick(prefix);
 950                 if (u)
 951                 {
 952                         Srv->ChangeGECOS(u,params[0]);
 953                         params[0] = ":" + params[0];
 954                         DoOneToAllButSender(prefix,"FNAME",params,u->server);
 955                 }
 956                 return true;
 957         }
 958
 959         bool LocalPing(std::string prefix, std::deque<std::string> params)
 960         {
 961                 if (params.size() < 1)
 962                         return true;
 963                 std::string stufftobounce = params[0];
 964                 this->WriteLine(":"+Srv->GetServerName()+" PONG "+stufftobounce);
 965                 return true;
 966         }
 967
 968         bool RemoteServer(std::string prefix, std::deque<std::string> params)
 969         {
 970                 if (params.size() < 4)
 971                         return false;
 972                 std::string servername = params[0];
 973                 std::string password = params[1];
 974                 // hopcount is not used for a remote server, we calculate this ourselves
 975                 std::string description = params[3];
 976                 TreeServer* ParentOfThis = FindServer(prefix);
 977                 if (!ParentOfThis)
 978                 {
 979                         this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
 980                         return false;
 981                 }
 982                 TreeServer* CheckDupe = FindServer(servername);
 983                 if (CheckDupe)
 984                 {
 985                         this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
 986                         return false;
 987                 }
 988                 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
 989                 ParentOfThis->AddChild(Node);
 990                 params[3] = ":" + params[3];
 991                 DoOneToAllButSender(prefix,"SERVER",params,prefix);
 992                 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
 993                 return true;
 994         }
 995
 996         bool Outbound_Reply_Server(std::deque<std::string> params)
 997         {
 998                 if (params.size() < 4)
 999                         return false;
1000                 std::string servername = params[0];
1001                 std::string password = params[1];
1002                 int hops = atoi(params[2].c_str());
1003                 if (hops)
1004                 {
1005                         this->WriteLine("ERROR :Server too far away for authentication");
1006                         return false;
1007                 }
1008                 std::string description = params[3];
1009                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1010                 {
1011                         if ((x->Name == servername) && (x->RecvPass == password))
1012                         {
1013                                 TreeServer* CheckDupe = FindServer(servername);
1014                                 if (CheckDupe)
1015                                 {
1016                                         this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1017                                         return false;
1018                                 }
1019                                 // Begin the sync here. this kickstarts the
1020                                 // other side, waiting in WAIT_AUTH_2 state,
1021                                 // into starting their burst, as it shows
1022                                 // that we're happy.
1023                                 this->LinkState = CONNECTED;
1024                                 // we should add the details of this server now
1025                                 // to the servers tree, as a child of the root
1026                                 // node.
1027                                 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
1028                                 TreeRoot->AddChild(Node);
1029                                 params[3] = ":" + params[3];
1030                                 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
1031                                 this->DoBurst(Node);
1032                                 return true;
1033                         }
1034                 }
1035                 this->WriteLine("ERROR :Invalid credentials");
1036                 return false;
1037         }
1038
1039         bool Inbound_Server(std::deque<std::string> params)
1040         {
1041                 if (params.size() < 4)
1042                         return false;
1043                 std::string servername = params[0];
1044                 std::string password = params[1];
1045                 int hops = atoi(params[2].c_str());
1046                 if (hops)
1047                 {
1048                         this->WriteLine("ERROR :Server too far away for authentication");
1049                         return false;
1050                 }
1051                 std::string description = params[3];
1052                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1053                 {
1054                         if ((x->Name == servername) && (x->RecvPass == password))
1055                         {
1056                                 TreeServer* CheckDupe = FindServer(servername);
1057                                 if (CheckDupe)
1058                                 {
1059                                         this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1060                                         return false;
1061                                 }
1062                                 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+this->GetIP()+"] ("+description+")");
1063                                 this->InboundServerName = servername;
1064                                 this->InboundDescription = description;
1065                                 // this is good. Send our details: Our server name and description and hopcount of 0,
1066                                 // along with the sendpass from this block.
1067                                 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
1068                                 // move to the next state, we are now waiting for THEM.
1069                                 this->LinkState = WAIT_AUTH_2;
1070                                 return true;
1071                         }
1072                 }
1073                 this->WriteLine("ERROR :Invalid credentials");
1074                 return false;
1075         }
1076
1077         std::deque<std::string> Split(std::string line, bool stripcolon)
1078         {
1079                 std::deque<std::string> n;
1080                 if (!strchr(line.c_str(),' '))
1081                 {
1082                         n.push_back(line);
1083                         return n;
1084                 }
1085                 std::stringstream s(line);
1086                 std::string param = "";
1087                 n.clear();
1088                 int item = 0;
1089                 while (!s.eof())
1090                 {
1091                         char c;
1092                         s.get(c);
1093                         if (c == ' ')
1094                         {
1095                                 n.push_back(param);
1096                                 param = "";
1097                                 item++;
1098                         }
1099                         else
1100                         {
1101                                 if (!s.eof())
1102                                 {
1103                                         param = param + c;
1104                                 }
1105                                 if ((param == ":") && (item > 0))
1106                                 {
1107                                         param = "";
1108                                         while (!s.eof())
1109                                         {
1110                                                 s.get(c);
1111                                                 if (!s.eof())
1112                                                 {
1113                                                         param = param + c;
1114                                                 }
1115                                         }
1116                                         n.push_back(param);
1117                                         param = "";
1118                                 }
1119                         }
1120                 }
1121                 if (param != "")
1122                 {
1123                         n.push_back(param);
1124                 }
1125                 return n;
1126         }
1127
1128         bool ProcessLine(std::string line)
1129         {
1130                 char* l = (char*)line.c_str();
1131                 while ((strlen(l)) && (l[strlen(l)-1] == '\r') || (l[strlen(l)-1] == '\n'))
1132                         l[strlen(l)-1] = '\0';
1133                 line = l;
1134                 if (line == "")
1135                         return true;
1136                 Srv->Log(DEBUG,"IN: '"+line+"'");
1137                 std::deque<std::string> params = this->Split(line,true);
1138                 std::string command = "";
1139                 std::string prefix = "";
1140                 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
1141                 {
1142                         prefix = params[0];
1143                         command = params[1];
1144                         char* pref = (char*)prefix.c_str();
1145                         prefix = ++pref;
1146                         params.pop_front();
1147                         params.pop_front();
1148                 }
1149                 else
1150                 {
1151                         prefix = "";
1152                         command = params[0];
1153                         params.pop_front();
1154                 }
1155
1156                 switch (this->LinkState)
1157                 {
1158                         TreeServer* Node;
1159
1160                         case WAIT_AUTH_1:
1161                                 // Waiting for SERVER command from remote server. Server initiating
1162                                 // the connection sends the first SERVER command, listening server
1163                                 // replies with theirs if its happy, then if the initiator is happy,
1164                                 // it starts to send its net sync, which starts the merge, otherwise
1165                                 // it sends an ERROR.
1166                                 if (command == "SERVER")
1167                                 {
1168                                         return this->Inbound_Server(params);
1169                                 }
1170                                 else if (command == "ERROR")
1171                                 {
1172                                         return this->Error(params);
1173                                 }
1174                         break;
1175                         case WAIT_AUTH_2:
1176                                 // Waiting for start of other side's netmerge to say they liked our
1177                                 // password.
1178                                 if (command == "SERVER")
1179                                 {
1180                                         // cant do this, they sent it to us in the WAIT_AUTH_1 state!
1181                                         // silently ignore.
1182                                         return true;
1183                                 }
1184                                 else if (command == "BURST")
1185                                 {
1186                                         this->LinkState = CONNECTED;
1187                                         Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
1188                                         TreeRoot->AddChild(Node);
1189                                         params.clear();
1190                                         params.push_back(InboundServerName);
1191                                         params.push_back("*");
1192                                         params.push_back("1");
1193                                         params.push_back(":"+InboundDescription);
1194                                         DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
1195                                         this->DoBurst(Node);
1196                                 }
1197                                 else if (command == "ERROR")
1198                                 {
1199                                         return this->Error(params);
1200                                 }
1201
1202                         break;
1203                         case LISTENER:
1204                                 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
1205                                 return false;
1206                         break;
1207                         case CONNECTING:
1208                                 if (command == "SERVER")
1209                                 {
1210                                         // another server we connected to, which was in WAIT_AUTH_1 state,
1211                                         // has just sent us their credentials. If we get this far, theyre
1212                                         // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
1213                                         // if we're happy with this, we should send our netburst which
1214                                         // kickstarts the merge.
1215                                         return this->Outbound_Reply_Server(params);
1216                                 }
1217                                 else if (command == "ERROR")
1218                                 {
1219                                         return this->Error(params);
1220                                 }
1221                         break;
1222                         case CONNECTED:
1223                                 // This is the 'authenticated' state, when all passwords
1224                                 // have been exchanged and anything past this point is taken
1225                                 // as gospel.
1226                                 std::string target = "";
1227                                 if ((command == "NICK") && (params.size() > 1))
1228                                 {
1229                                         return this->IntroduceClient(prefix,params);
1230                                 }
1231                                 else if (command == "FJOIN")
1232                                 {
1233                                         return this->ForceJoin(prefix,params);
1234                                 }
1235                                 else if (command == "SERVER")
1236                                 {
1237                                         return this->RemoteServer(prefix,params);
1238                                 }
1239                                 else if (command == "ERROR")
1240                                 {
1241                                         return this->Error(params);
1242                                 }
1243                                 else if (command == "OPERTYPE")
1244                                 {
1245                                         return this->OperType(prefix,params);
1246                                 }
1247                                 else if (command == "FMODE")
1248                                 {
1249                                         return this->ForceMode(prefix,params);
1250                                 }
1251                                 else if (command == "KILL")
1252                                 {
1253                                         return this->RemoteKill(prefix,params);
1254                                 }
1255                                 else if (command == "FTOPIC")
1256                                 {
1257                                         return this->ForceTopic(prefix,params);
1258                                 }
1259                                 else if (command == "REHASH")
1260                                 {
1261                                         return this->RemoteRehash(prefix,params);
1262                                 }
1263                                 else if (command == "PING")
1264                                 {
1265                                         return this->LocalPing(prefix,params);
1266                                 }
1267                                 else if (command == "PONG")
1268                                 {
1269                                         return this->LocalPong(prefix,params);
1270                                 }
1271                                 else if (command == "VERSION")
1272                                 {
1273                                         return this->ServerVersion(prefix,params);
1274                                 }
1275                                 else if (command == "FHOST")
1276                                 {
1277                                         return this->ChangeHost(prefix,params);
1278                                 }
1279                                 else if (command == "FNAME")
1280                                 {
1281                                         return this->ChangeName(prefix,params);
1282                                 }
1283                                 else if (command == "SQUIT")
1284                                 {
1285                                         if (params.size() == 2)
1286                                         {
1287                                                 this->Squit(FindServer(params[0]),params[1]);
1288                                         }
1289                                         return true;
1290                                 }
1291                                 else
1292                                 {
1293                                         // not a special inter-server command.
1294                                         // Emulate the actual user doing the command,
1295                                         // this saves us having a huge ugly parser.
1296                                         userrec* who = Srv->FindNick(prefix);
1297                                         std::string sourceserv = this->myhost;
1298                                         if (this->InboundServerName != "")
1299                                         {
1300                                                 sourceserv = this->InboundServerName;
1301                                         }
1302                                         if (who)
1303                                         {
1304                                                 // its a user
1305                                                 target = who->server;
1306                                                 char* strparams[127];
1307                                                 for (unsigned int q = 0; q < params.size(); q++)
1308                                                 {
1309                                                         strparams[q] = (char*)params[q].c_str();
1310                                                 }
1311                                                 Srv->CallCommandHandler(command, strparams, params.size(), who);
1312                                         }
1313                                         else
1314                                         {
1315                                                 // its not a user. Its either a server, or somethings screwed up.
1316                                                 if (IsServer(prefix))
1317                                                 {
1318                                                         target = Srv->GetServerName();
1319                                                 }
1320                                                 else
1321                                                 {
1322                                                         log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
1323                                                         return true;
1324                                                 }
1325                                         }
1326                                         return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
1327
1328                                 }
1329                                 return true;
1330                         break;
1331                 }
1332                 return true;
1333         }
1334
1335         virtual std::string GetName()
1336         {
1337                 std::string sourceserv = this->myhost;
1338                 if (this->InboundServerName != "")
1339                 {
1340                         sourceserv = this->InboundServerName;
1341                 }
1342                 return sourceserv;
1343         }
1344
1345         virtual void OnTimeout()
1346         {
1347                 if (this->LinkState == CONNECTING)
1348                 {
1349                         Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
1350                 }
1351         }
1352
1353         virtual void OnClose()
1354         {
1355                 // Connection closed.
1356                 // If the connection is fully up (state CONNECTED)
1357                 // then propogate a netsplit to all peers.
1358                 std::string quitserver = this->myhost;
1359                 if (this->InboundServerName != "")
1360                 {
1361                         quitserver = this->InboundServerName;
1362                 }
1363                 TreeServer* s = FindServer(quitserver);
1364                 if (s)
1365                 {
1366                         Squit(s,"Remote host closed the connection");
1367                 }
1368         }
1369
1370         virtual int OnIncomingConnection(int newsock, char* ip)
1371         {
1372                 TreeSocket* s = new TreeSocket(newsock, ip);
1373                 Srv->AddSocket(s);
1374                 return true;
1375         }
1376 };
1377
1378 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
1379 {
1380         for (unsigned int c = 0; c < list.size(); c++)
1381         {
1382                 if (list[c] == server)
1383                 {
1384                         return;
1385                 }
1386         }
1387         list.push_back(server);
1388 }
1389
1390 // returns a list of DIRECT servernames for a specific channel
1391 std::deque<TreeServer*> GetListOfServersForChannel(chanrec* c)
1392 {
1393         std::deque<TreeServer*> list;
1394         std::vector<char*> *ulist = c->GetUsers();
1395         for (unsigned int i = 0; i < ulist->size(); i++)
1396         {
1397                 char* o = (*ulist)[i];
1398                 userrec* otheruser = (userrec*)o;
1399                 if (std::string(otheruser->server) != Srv->GetServerName())
1400                 {
1401                         TreeServer* best = BestRouteTo(otheruser->server);
1402                         if (best)
1403                                 AddThisServer(best,list);
1404                 }
1405         }
1406         return list;
1407 }
1408
1409 bool DoOneToAllButSenderRaw(std::string data,std::string omit,std::string prefix,std::string command,std::deque<std::string> params)
1410 {
1411         TreeServer* omitroute = BestRouteTo(omit);
1412         if ((command == "NOTICE") || (command == "PRIVMSG"))
1413         {
1414                 if ((params.size() >= 2) && (*(params[0].c_str()) != '$'))
1415                 {
1416                         if (*(params[0].c_str()) != '#')
1417                         {
1418                                 // special routing for private messages/notices
1419                                 userrec* d = Srv->FindNick(params[0]);
1420                                 if (d)
1421                                 {
1422                                         std::deque<std::string> par;
1423                                         par.clear();
1424                                         par.push_back(params[0]);
1425                                         par.push_back(":"+params[1]);
1426                                         DoOneToOne(prefix,command,par,d->server);
1427                                         return true;
1428                                 }
1429                         }
1430                         else
1431                         {
1432                                 log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
1433                                 chanrec* c = Srv->FindChannel(params[0]);
1434                                 if (c)
1435                                 {
1436                                         std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1437                                         log(DEBUG,"Got a list of %d servers",list.size());
1438                                         for (unsigned int i = 0; i < list.size(); i++)
1439                                         {
1440                                                 TreeSocket* Sock = list[i]->GetSocket();
1441                                                 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
1442                                                 {
1443                                                         log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
1444                                                         Sock->WriteLine(data);
1445                                                 }
1446                                         }
1447                                         return true;
1448                                 }
1449                         }
1450                 }
1451         }
1452         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1453         {
1454                 TreeServer* Route = TreeRoot->GetChild(x);
1455                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
1456                 {
1457                         TreeSocket* Sock = Route->GetSocket();
1458                         Sock->WriteLine(data);
1459                 }
1460         }
1461         return true;
1462 }
1463
1464 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit)
1465 {
1466         TreeServer* omitroute = BestRouteTo(omit);
1467         std::string FullLine = ":" + prefix + " " + command;
1468         for (unsigned int x = 0; x < params.size(); x++)
1469         {
1470                 FullLine = FullLine + " " + params[x];
1471         }
1472         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1473         {
1474                 TreeServer* Route = TreeRoot->GetChild(x);
1475                 // Send the line IF:
1476                 // The route has a socket (its a direct connection)
1477                 // The route isnt the one to be omitted
1478                 // The route isnt the path to the one to be omitted
1479                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
1480                 {
1481                         TreeSocket* Sock = Route->GetSocket();
1482                         Sock->WriteLine(FullLine);
1483                 }
1484         }
1485         return true;
1486 }
1487
1488 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params)
1489 {
1490         std::string FullLine = ":" + prefix + " " + command;
1491         for (unsigned int x = 0; x < params.size(); x++)
1492         {
1493                 FullLine = FullLine + " " + params[x];
1494         }
1495         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1496         {
1497                 TreeServer* Route = TreeRoot->GetChild(x);
1498                 if (Route->GetSocket())
1499                 {
1500                         TreeSocket* Sock = Route->GetSocket();
1501                         Sock->WriteLine(FullLine);
1502                 }
1503         }
1504         return true;
1505 }
1506
1507 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target)
1508 {
1509         TreeServer* Route = BestRouteTo(target);
1510         if (Route)
1511         {
1512                 std::string FullLine = ":" + prefix + " " + command;
1513                 for (unsigned int x = 0; x < params.size(); x++)
1514                 {
1515                         FullLine = FullLine + " " + params[x];
1516                 }
1517                 if (Route->GetSocket())
1518                 {
1519                         TreeSocket* Sock = Route->GetSocket();
1520                         Sock->WriteLine(FullLine);
1521                 }
1522                 return true;
1523         }
1524         else
1525         {
1526                 return true;
1527         }
1528 }
1529
1530 std::vector<TreeSocket*> Bindings;
1531
1532 void ReadConfiguration(bool rebind)
1533 {
1534         if (rebind)
1535         {
1536                 for (int j =0; j < Conf->Enumerate("bind"); j++)
1537                 {
1538                         std::string Type = Conf->ReadValue("bind","type",j);
1539                         std::string IP = Conf->ReadValue("bind","address",j);
1540                         long Port = Conf->ReadInteger("bind","port",j,true);
1541                         if (Type == "servers")
1542                         {
1543                                 if (IP == "*")
1544                                 {
1545                                         IP = "";
1546                                 }
1547                                 TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
1548                                 if (listener->GetState() == I_LISTENING)
1549                                 {
1550                                         Srv->AddSocket(listener);
1551                                         Bindings.push_back(listener);
1552                                 }
1553                                 else
1554                                 {
1555                                         log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
1556                                         listener->Close();
1557                                         delete listener;
1558                                 }
1559                         }
1560                 }
1561         }
1562         LinkBlocks.clear();
1563         for (int j =0; j < Conf->Enumerate("link"); j++)
1564         {
1565                 Link L;
1566                 L.Name = Conf->ReadValue("link","name",j);
1567                 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
1568                 L.Port = Conf->ReadInteger("link","port",j,true);
1569                 L.SendPass = Conf->ReadValue("link","sendpass",j);
1570                 L.RecvPass = Conf->ReadValue("link","recvpass",j);
1571                 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
1572                 L.NextConnectTime = time(NULL) + L.AutoConnect;
1573                 LinkBlocks.push_back(L);
1574                 log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
1575         }
1576 }
1577
1578
1579 class ModuleSpanningTree : public Module
1580 {
1581         std::vector<TreeSocket*> Bindings;
1582         int line;
1583         int NumServers;
1584
1585  public:
1586
1587         ModuleSpanningTree()
1588         {
1589                 Srv = new Server;
1590                 Conf = new ConfigReader;
1591                 Bindings.clear();
1592
1593                 // Create the root of the tree
1594                 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
1595
1596                 ReadConfiguration(true);
1597         }
1598
1599         void ShowLinks(TreeServer* Current, userrec* user, int hops)
1600         {
1601                 std::string Parent = TreeRoot->GetName();
1602                 if (Current->GetParent())
1603                 {
1604                         Parent = Current->GetParent()->GetName();
1605                 }
1606                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1607                 {
1608                         ShowLinks(Current->GetChild(q),user,hops+1);
1609                 }
1610                 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),hops,Current->GetDesc().c_str());
1611         }
1612
1613         int CountLocalServs()
1614         {
1615                 return TreeRoot->ChildCount();
1616         }
1617
1618         void CountServsRecursive(TreeServer* Current)
1619         {
1620                 NumServers++;
1621                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1622                 {
1623                         CountServsRecursive(Current->GetChild(q));
1624                 }
1625         }
1626
1627         int CountServs()
1628         {
1629                 NumServers = 0;
1630                 CountServsRecursive(TreeRoot);
1631                 return NumServers;
1632         }
1633
1634         void HandleLinks(char** parameters, int pcnt, userrec* user)
1635         {
1636                 ShowLinks(TreeRoot,user,0);
1637                 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
1638                 return;
1639         }
1640
1641         void HandleLusers(char** parameters, int pcnt, userrec* user)
1642         {
1643                 WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),this->CountServs());
1644                 WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
1645                 WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
1646                 WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
1647                 WriteServ(user->fd,"254 %s :I have %d clients and %d servers",user->nick,local_count(),this->CountLocalServs());
1648                 return;
1649         }
1650
1651         // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
1652
1653         void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
1654         {
1655                 if (line < 128)
1656                 {
1657                         for (int t = 0; t < depth; t++)
1658                         {
1659                                 matrix[line][t] = ' ';
1660                         }
1661                         strlcpy(&matrix[line][depth],Current->GetName().c_str(),80);
1662                         line++;
1663                         for (unsigned int q = 0; q < Current->ChildCount(); q++)
1664                         {
1665                                 ShowMap(Current->GetChild(q),user,depth+2,matrix);
1666                         }
1667                 }
1668         }
1669
1670         // Ok, prepare to be confused.
1671         // After much mulling over how to approach this, it struck me that
1672         // the 'usual' way of doing a /MAP isnt the best way. Instead of
1673         // keeping track of a ton of ascii characters, and line by line
1674         // under recursion working out where to place them using multiplications
1675         // and divisons, we instead render the map onto a backplane of characters
1676         // (a character matrix), then draw the branches as a series of "L" shapes
1677         // from the nodes. This is not only friendlier on CPU it uses less stack.
1678
1679         void HandleMap(char** parameters, int pcnt, userrec* user)
1680         {
1681                 // This array represents a virtual screen which we will
1682                 // "scratch" draw to, as the console device of an irc
1683                 // client does not provide for a proper terminal.
1684                 char matrix[128][80];
1685                 for (unsigned int t = 0; t < 128; t++)
1686                 {
1687                         matrix[t][0] = '\0';
1688                 }
1689                 line = 0;
1690                 // The only recursive bit is called here.
1691                 ShowMap(TreeRoot,user,0,matrix);
1692                 // Process each line one by one. The algorithm has a limit of
1693                 // 128 servers (which is far more than a spanning tree should have
1694                 // anyway, so we're ok). This limit can be raised simply by making
1695                 // the character matrix deeper, 128 rows taking 10k of memory.
1696                 for (int l = 1; l < line; l++)
1697                 {
1698                         // scan across the line looking for the start of the
1699                         // servername (the recursive part of the algorithm has placed
1700                         // the servers at indented positions depending on what they
1701                         // are related to)
1702                         int first_nonspace = 0;
1703                         while (matrix[l][first_nonspace] == ' ')
1704                         {
1705                                 first_nonspace++;
1706                         }
1707                         first_nonspace--;
1708                         // Draw the `- (corner) section: this may be overwritten by
1709                         // another L shape passing along the same vertical pane, becoming
1710                         // a |- (branch) section instead.
1711                         matrix[l][first_nonspace] = '-';
1712                         matrix[l][first_nonspace-1] = '`';
1713                         int l2 = l - 1;
1714                         // Draw upwards until we hit the parent server, causing possibly
1715                         // other corners (`-) to become branches (|-)
1716                         while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
1717                         {
1718                                 matrix[l2][first_nonspace-1] = '|';
1719                                 l2--;
1720                         }
1721                 }
1722                 // dump the whole lot to the user. This is the easy bit, honest.
1723                 for (int t = 0; t < line; t++)
1724                 {
1725                         WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
1726                 }
1727                 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
1728                 return;
1729         }
1730
1731         int HandleSquit(char** parameters, int pcnt, userrec* user)
1732         {
1733                 TreeServer* s = FindServerMask(parameters[0]);
1734                 if (s)
1735                 {
1736                         TreeSocket* sock = s->GetSocket();
1737                         if (sock)
1738                         {
1739                                 WriteOpers("*** SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
1740                                 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
1741                                 sock->Close();
1742                         }
1743                         else
1744                         {
1745                                 WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
1746                         }
1747                 }
1748                 else
1749                 {
1750                          WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
1751                 }
1752                 return 1;
1753         }
1754
1755         void DoPingChecks(time_t curtime)
1756         {
1757                 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
1758                 {
1759                         TreeServer* serv = TreeRoot->GetChild(j);
1760                         TreeSocket* sock = serv->GetSocket();
1761                         if (sock)
1762                         {
1763                                 if (curtime >= serv->NextPingTime())
1764                                 {
1765                                         if (serv->AnsweredLastPing())
1766                                         {
1767                                                 sock->WriteLine(":"+Srv->GetServerName()+" PING "+serv->GetName());
1768                                                 serv->SetNextPingTime(curtime + 60);
1769                                         }
1770                                         else
1771                                         {
1772                                                 // they didnt answer, boot them
1773                                                 WriteOpers("*** Server \002%s\002 pinged out",serv->GetName().c_str());
1774                                                 sock->Squit(serv,"Ping timeout");
1775                                                 sock->Close();
1776                                                 return;
1777                                         }
1778                                 }
1779                         }
1780                 }
1781         }
1782
1783         void AutoConnectServers(time_t curtime)
1784         {
1785                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1786                 {
1787                         if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
1788                         {
1789                                 log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
1790                                 x->NextConnectTime = curtime + x->AutoConnect;
1791                                 TreeServer* CheckDupe = FindServer(x->Name);
1792                                 if (!CheckDupe)
1793                                 {
1794                                         // an autoconnected server is not connected. Check if its time to connect it
1795                                         WriteOpers("*** AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
1796                                         TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1797                                         Srv->AddSocket(newsocket);
1798                                 }
1799                         }
1800                 }
1801         }
1802
1803         int HandleVersion(char** parameters, int pcnt, userrec* user)
1804         {
1805                 // we've already checked if pcnt > 0, so this is safe
1806                 TreeServer* found = FindServerMask(parameters[0]);
1807                 if (found)
1808                 {
1809                         std::string Version = found->GetVersion();
1810                         WriteServ(user->fd,"351 %s :%s",user->nick,Version.c_str());
1811                 }
1812                 else
1813                 {
1814                         WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
1815                 }
1816                 return 1;
1817         }
1818
1819         int HandleConnect(char** parameters, int pcnt, userrec* user)
1820         {
1821                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1822                 {
1823                         if (Srv->MatchText(x->Name.c_str(),parameters[0]))
1824                         {
1825                                 TreeServer* CheckDupe = FindServer(x->Name);
1826                                 if (!CheckDupe)
1827                                 {
1828                                         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);
1829                                         TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1830                                         Srv->AddSocket(newsocket);
1831                                         return 1;
1832                                 }
1833                                 else
1834                                 {
1835                                         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());
1836                                         return 1;
1837                                 }
1838                         }
1839                 }
1840                 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
1841                 return 1;
1842         }
1843
1844         virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user)
1845         {
1846                 if (command == "CONNECT")
1847                 {
1848                         return this->HandleConnect(parameters,pcnt,user);
1849                 }
1850                 else if (command == "SQUIT")
1851                 {
1852                         return this->HandleSquit(parameters,pcnt,user);
1853                 }
1854                 else if (command == "MAP")
1855                 {
1856                         this->HandleMap(parameters,pcnt,user);
1857                         return 1;
1858                 }
1859                 else if (command == "LUSERS")
1860                 {
1861                         this->HandleLusers(parameters,pcnt,user);
1862                         return 1;
1863                 }
1864                 else if (command == "LINKS")
1865                 {
1866                         this->HandleLinks(parameters,pcnt,user);
1867                         return 1;
1868                 }
1869                 else if ((command == "VERSION") && (pcnt > 0))
1870                 {
1871                         this->HandleVersion(parameters,pcnt,user);
1872                         return 1;
1873                 }
1874                 else if (Srv->IsValidModuleCommand(command, pcnt, user))
1875                 {
1876                         // this bit of code cleverly routes all module commands
1877                         // to all remote severs *automatically* so that modules
1878                         // can just handle commands locally, without having
1879                         // to have any special provision in place for remote
1880                         // commands and linking protocols.
1881                         std::deque<std::string> params;
1882                         params.clear();
1883                         for (int j = 0; j < pcnt; j++)
1884                         {
1885                                 if (strchr(parameters[j],' '))
1886                                 {
1887                                         params.push_back(":" + std::string(parameters[j]));
1888                                 }
1889                                 else
1890                                 {
1891                                         params.push_back(std::string(parameters[j]));
1892                                 }
1893                         }
1894                         DoOneToMany(user->nick,command,params);
1895                 }
1896                 return 0;
1897         }
1898
1899         virtual void OnGetServerDescription(std::string servername,std::string &description)
1900         {
1901                 TreeServer* s = FindServer(servername);
1902                 if (s)
1903                 {
1904                         description = s->GetDesc();
1905                 }
1906         }
1907
1908         virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
1909         {
1910                 if (std::string(source->server) == Srv->GetServerName())
1911                 {
1912                         std::deque<std::string> params;
1913                         params.push_back(dest->nick);
1914                         params.push_back(channel->name);
1915                         DoOneToMany(source->nick,"INVITE",params);
1916                 }
1917         }
1918
1919         virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, std::string topic)
1920         {
1921                 std::deque<std::string> params;
1922                 params.push_back(chan->name);
1923                 params.push_back(":"+topic);
1924                 DoOneToMany(user->nick,"TOPIC",params);
1925         }
1926
1927         virtual void OnWallops(userrec* user, std::string text)
1928         {
1929                 if (std::string(user->server) == Srv->GetServerName())
1930                 {
1931                         std::deque<std::string> params;
1932                         params.push_back(":"+text);
1933                         DoOneToMany(user->nick,"WALLOPS",params);
1934                 }
1935         }
1936
1937         virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
1938         {
1939                 if (target_type == TYPE_USER)
1940                 {
1941                         userrec* d = (userrec*)dest;
1942                         if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1943                         {
1944                                 std::deque<std::string> params;
1945                                 params.clear();
1946                                 params.push_back(d->nick);
1947                                 params.push_back(":"+text);
1948                                 DoOneToOne(user->nick,"NOTICE",params,d->server);
1949                         }
1950                 }
1951                 else
1952                 {
1953                         if (std::string(user->server) == Srv->GetServerName())
1954                         {
1955                                 chanrec *c = (chanrec*)dest;
1956                                 std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1957                                 for (unsigned int i = 0; i < list.size(); i++)
1958                                 {
1959                                         TreeSocket* Sock = list[i]->GetSocket();
1960                                         if (Sock)
1961                                                 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+std::string(c->name)+" :"+text);
1962                                 }
1963                         }
1964                 }
1965         }
1966
1967         virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
1968         {
1969                 if (target_type == TYPE_USER)
1970                 {
1971                         // route private messages which are targetted at clients only to the server
1972                         // which needs to receive them
1973                         userrec* d = (userrec*)dest;
1974                         if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1975                         {
1976                                 std::deque<std::string> params;
1977                                 params.clear();
1978                                 params.push_back(d->nick);
1979                                 params.push_back(":"+text);
1980                                 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
1981                         }
1982                 }
1983                 else
1984                 {
1985                         if (std::string(user->server) == Srv->GetServerName())
1986                         {
1987                                 chanrec *c = (chanrec*)dest;
1988                                 std::deque<TreeServer*> list = GetListOfServersForChannel(c);
1989                                 for (unsigned int i = 0; i < list.size(); i++)
1990                                 {
1991                                         TreeSocket* Sock = list[i]->GetSocket();
1992                                         if (Sock)
1993                                                 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+std::string(c->name)+" :"+text);
1994                                 }
1995                         }
1996                 }
1997         }
1998
1999         virtual void OnBackgroundTimer(time_t curtime)
2000         {
2001                 AutoConnectServers(curtime);
2002                 DoPingChecks(curtime);
2003         }
2004
2005         virtual void OnUserJoin(userrec* user, chanrec* channel)
2006         {
2007                 // Only do this for local users
2008                 if (std::string(user->server) == Srv->GetServerName())
2009                 {
2010                         std::deque<std::string> params;
2011                         params.clear();
2012                         params.push_back(channel->name);
2013                         if (*channel->key)
2014                         {
2015                                 // if the channel has a key, force the join by emulating the key.
2016                                 params.push_back(channel->key);
2017                         }
2018                         if (channel->GetUserCounter() > 1)
2019                         {
2020                                 // not the first in the channel
2021                                 DoOneToMany(user->nick,"JOIN",params);
2022                         }
2023                         else
2024                         {
2025                                 // first in the channel, set up their permissions
2026                                 // and the channel TS with FJOIN.
2027                                 char ts[24];
2028                                 snprintf(ts,24,"%lu",(unsigned long)channel->age);
2029                                 params.clear();
2030                                 params.push_back(channel->name);
2031                                 params.push_back(ts);
2032                                 params.push_back("@"+std::string(user->nick));
2033                                 DoOneToMany(Srv->GetServerName(),"FJOIN",params);
2034                         }
2035                 }
2036         }
2037
2038         virtual void OnChangeHost(userrec* user, std::string newhost)
2039         {
2040                 // only occurs for local clients
2041                 std::deque<std::string> params;
2042                 params.push_back(newhost);
2043                 DoOneToMany(user->nick,"FHOST",params);
2044         }
2045
2046         virtual void OnChangeName(userrec* user, std::string gecos)
2047         {
2048                 // only occurs for local clients
2049                 std::deque<std::string> params;
2050                 params.push_back(gecos);
2051                 DoOneToMany(user->nick,"FNAME",params);
2052         }
2053
2054         virtual void OnUserPart(userrec* user, chanrec* channel)
2055         {
2056                 if (std::string(user->server) == Srv->GetServerName())
2057                 {
2058                         std::deque<std::string> params;
2059                         params.clear();
2060                         params.push_back(channel->name);
2061                         DoOneToMany(user->nick,"PART",params);
2062                 }
2063         }
2064
2065         virtual void OnUserConnect(userrec* user)
2066         {
2067                 char agestr[MAXBUF];
2068                 if (std::string(user->server) == Srv->GetServerName())
2069                 {
2070                         std::deque<std::string> params;
2071                         snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
2072                         params.clear();
2073                         params.push_back(agestr);
2074                         params.push_back(user->nick);
2075                         params.push_back(user->host);
2076                         params.push_back(user->dhost);
2077                         params.push_back(user->ident);
2078                         params.push_back("+"+std::string(user->modes));
2079                         params.push_back(user->ip);
2080                         params.push_back(":"+std::string(user->fullname));
2081                         DoOneToMany(Srv->GetServerName(),"NICK",params);
2082                 }
2083         }
2084
2085         virtual void OnUserQuit(userrec* user, std::string reason)
2086         {
2087                 if (std::string(user->server) == Srv->GetServerName())
2088                 {
2089                         std::deque<std::string> params;
2090                         params.push_back(":"+reason);
2091                         DoOneToMany(user->nick,"QUIT",params);
2092                 }
2093         }
2094
2095         virtual void OnUserPostNick(userrec* user, std::string oldnick)
2096         {
2097                 if (std::string(user->server) == Srv->GetServerName())
2098                 {
2099                         std::deque<std::string> params;
2100                         params.push_back(user->nick);
2101                         DoOneToMany(oldnick,"NICK",params);
2102                 }
2103         }
2104
2105         virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason)
2106         {
2107                 if (std::string(source->server) == Srv->GetServerName())
2108                 {
2109                         std::deque<std::string> params;
2110                         params.push_back(chan->name);
2111                         params.push_back(user->nick);
2112                         params.push_back(":"+reason);
2113                         DoOneToMany(source->nick,"KICK",params);
2114                 }
2115         }
2116
2117         virtual void OnRemoteKill(userrec* source, userrec* dest, std::string reason)
2118         {
2119                 std::deque<std::string> params;
2120                 params.push_back(dest->nick);
2121                 params.push_back(":"+reason);
2122                 DoOneToMany(source->nick,"KILL",params);
2123         }
2124
2125         virtual void OnRehash(std::string parameter)
2126         {
2127                 if (parameter != "")
2128                 {
2129                         std::deque<std::string> params;
2130                         params.push_back(parameter);
2131                         DoOneToMany(Srv->GetServerName(),"REHASH",params);
2132                         // check for self
2133                         if (Srv->MatchText(Srv->GetServerName(),parameter))
2134                         {
2135                                 Srv->SendOpers("*** Remote rehash initiated from server \002"+Srv->GetServerName()+"\002.");
2136                                 Srv->RehashServer();
2137                         }
2138                 }
2139                 ReadConfiguration(false);
2140         }
2141
2142         // note: the protocol does not allow direct umode +o except
2143         // via NICK with 8 params. sending OPERTYPE infers +o modechange
2144         // locally.
2145         virtual void OnOper(userrec* user, std::string opertype)
2146         {
2147                 if (std::string(user->server) == Srv->GetServerName())
2148                 {
2149                         std::deque<std::string> params;
2150                         params.push_back(opertype);
2151                         DoOneToMany(user->nick,"OPERTYPE",params);
2152                 }
2153         }
2154
2155         virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
2156         {
2157                 if (std::string(user->server) == Srv->GetServerName())
2158                 {
2159                         if (target_type == TYPE_USER)
2160                         {
2161                                 userrec* u = (userrec*)dest;
2162                                 std::deque<std::string> params;
2163                                 params.push_back(u->nick);
2164                                 params.push_back(text);
2165                                 DoOneToMany(user->nick,"MODE",params);
2166                         }
2167                         else
2168                         {
2169                                 chanrec* c = (chanrec*)dest;
2170                                 std::deque<std::string> params;
2171                                 params.push_back(c->name);
2172                                 params.push_back(text);
2173                                 DoOneToMany(user->nick,"MODE",params);
2174                         }
2175                 }
2176         }
2177
2178         virtual void ProtoSendMode(void* opaque, int target_type, void* target, std::string modeline)
2179         {
2180                 TreeSocket* s = (TreeSocket*)opaque;
2181                 if (target)
2182                 {
2183                         if (target_type == TYPE_USER)
2184                         {
2185                                 userrec* u = (userrec*)target;
2186                                 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+u->nick+" "+modeline);
2187                         }
2188                         else
2189                         {
2190                                 chanrec* c = (chanrec*)target;
2191                                 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" "+modeline);
2192                         }
2193                 }
2194         }
2195
2196         virtual ~ModuleSpanningTree()
2197         {
2198                 delete Srv;
2199         }
2200
2201         virtual Version GetVersion()
2202         {
2203                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
2204         }
2205 };
2206
2207
2208 class ModuleSpanningTreeFactory : public ModuleFactory
2209 {
2210  public:
2211         ModuleSpanningTreeFactory()
2212         {
2213         }
2214
2215         ~ModuleSpanningTreeFactory()
2216         {
2217         }
2218
2219         virtual Module * CreateModule()
2220         {
2221                 TreeProtocolModule = new ModuleSpanningTree;
2222                 return TreeProtocolModule;
2223         }
2224
2225 };
2226
2227
2228 extern "C" void * init_module( void )
2229 {
2230         return new ModuleSpanningTreeFactory;
2231 }