src/modules/m_spanningtree.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include <stdio.h>
  20 #include <vector>
  21 #include <deque>
  22 #include "globals.h"
  23 #include "inspircd_config.h"
  24 #ifdef GCC3
  25 #include <ext/hash_map>
  26 #else
  27 #include <hash_map>
  28 #endif
  29 #include "users.h"
  30 #include "channels.h"
  31 #include "modules.h"
  32 #include "socket.h"
  33 #include "helperfuncs.h"
  34 #include "inspircd.h"
  35 #include "inspstring.h"
  36 #include "hashcomp.h"
  37 #include "message.h"
  38
  39 #ifdef GCC3
  40 #define nspace __gnu_cxx
  41 #else
  42 #define nspace std
  43 #endif
  44
  45 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
  46
  47 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
  48 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
  49
  50 extern user_hash clientlist;
  51 extern chan_hash chanlist;
  52
  53 class TreeServer;
  54 class TreeSocket;
  55
  56 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target);
  57 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit);
  58 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params);
  59 bool DoOneToAllButSenderRaw(std::string data,std::string omit);
  60
  61 class TreeServer
  62 {
  63         TreeServer* Parent;
  64         std::vector<TreeServer*> Children;
  65         std::string ServerName;
  66         std::string ServerDesc;
  67         std::string VersionString;
  68         int UserCount;
  69         int OperCount;
  70         TreeSocket* Socket;     // for directly connected servers this points at the socket object
  71
  72  public:
  73
  74         TreeServer()
  75         {
  76                 Parent = NULL;
  77                 ServerName = "";
  78                 ServerDesc = "";
  79                 VersionString = "";
  80                 UserCount = OperCount = 0;
  81         }
  82
  83         TreeServer(std::string Name, std::string Desc) : ServerName(Name), ServerDesc(Desc)
  84         {
  85                 Parent = NULL;
  86                 VersionString = "";
  87                 UserCount = OperCount = 0;
  88         }
  89
  90         TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name), ServerDesc(Desc), Socket(Sock)
  91         {
  92                 VersionString = "";
  93                 UserCount = OperCount = 0;
  94         }
  95
  96         std::string GetName()
  97         {
  98                 return this->ServerName;
  99         }
 100
 101         std::string GetDesc()
 102         {
 103                 return this->ServerDesc;
 104         }
 105
 106         std::string GetVersion()
 107         {
 108                 return this->VersionString;
 109         }
 110
 111         int GetUserCount()
 112         {
 113                 return this->UserCount;
 114         }
 115
 116         int GetOperCount()
 117         {
 118                 return this->OperCount;
 119         }
 120
 121         TreeSocket* GetSocket()
 122         {
 123                 return this->Socket;
 124         }
 125
 126         TreeServer* GetParent()
 127         {
 128                 return this->Parent;
 129         }
 130
 131         unsigned int ChildCount()
 132         {
 133                 return Children.size();
 134         }
 135
 136         TreeServer* GetChild(unsigned int n)
 137         {
 138                 if (n < Children.size())
 139                 {
 140                         return Children[n];
 141                 }
 142                 else
 143                 {
 144                         return NULL;
 145                 }
 146         }
 147
 148         void AddChild(TreeServer* Child)
 149         {
 150                 Children.push_back(Child);
 151         }
 152
 153         bool DelChild(TreeServer* Child)
 154         {
 155                 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 156                 {
 157                         if (*a == Child)
 158                         {
 159                                 Children.erase(a);
 160                                 return true;
 161                         }
 162                 }
 163                 return false;
 164         }
 165
 166         // removes child nodes of this node, and of that node, etc etc
 167         bool Tidy()
 168         {
 169                 bool stillchildren = true;
 170                 while (stillchildren)
 171                 {
 172                         stillchildren = false;
 173                         for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 174                         {
 175                                 TreeServer* s = (TreeServer*)*a;
 176                                 s->Tidy();
 177                                 Children.erase(a);
 178                                 delete s;
 179                                 stillchildren = true;
 180                                 break;
 181                         }
 182                 }
 183                 return true;
 184         }
 185 };
 186
 187 class Link
 188 {
 189  public:
 190          std::string Name;
 191          std::string IPAddr;
 192          int Port;
 193          std::string SendPass;
 194          std::string RecvPass;
 195 };
 196
 197 /* $ModDesc: Povides a spanning tree server link protocol */
 198
 199 Server *Srv;
 200 ConfigReader *Conf;
 201 TreeServer *TreeRoot;
 202 std::vector<Link> LinkBlocks;
 203
 204 TreeServer* RouteEnumerate(TreeServer* Current, std::string ServerName)
 205 {
 206         if (Current->GetName() == ServerName)
 207                 return Current;
 208         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 209         {
 210                 TreeServer* found = RouteEnumerate(Current->GetChild(q),ServerName);
 211                 if (found)
 212                 {
 213                         return found;
 214                 }
 215         }
 216         return NULL;
 217 }
 218
 219 // Returns the locally connected server we must route a
 220 // message through to reach server 'ServerName'. This
 221 // only applies to one-to-one and not one-to-many routing.
 222 TreeServer* BestRouteTo(std::string ServerName)
 223 {
 224         log(DEBUG,"Finding best route to %s",ServerName.c_str());
 225         // first, find the server by recursively walking the tree
 226         TreeServer* Found = RouteEnumerate(TreeRoot,ServerName);
 227         // did we find it? If not, they did something wrong, abort.
 228         if (!Found)
 229         {
 230                 log(DEBUG,"Failed to find %s by walking tree!",ServerName.c_str());
 231                 return NULL;
 232         }
 233         else
 234         {
 235                 // The server exists, follow its parent nodes until
 236                 // the parent of the current is 'TreeRoot', we know
 237                 // then that this is a directly-connected server.
 238                 while ((Found) && (Found->GetParent() != TreeRoot))
 239                 {
 240                         Found = Found->GetParent();
 241                 }
 242                 log(DEBUG,"Route to %s is via %s",ServerName.c_str(),Found->GetName().c_str());
 243                 return Found;
 244         }
 245 }
 246
 247 bool LookForServer(TreeServer* Current, std::string ServerName)
 248 {
 249         if (ServerName == Current->GetName())
 250                 return true;
 251         for (unsigned int q = 0; q < Current->ChildCount(); q++)
 252         {
 253                 if (LookForServer(Current->GetChild(q),ServerName))
 254                         return true;
 255         }
 256         return false;
 257 }
 258
 259 TreeServer* Found;
 260
 261 void RFindServer(TreeServer* Current, std::string ServerName)
 262 {
 263         if ((ServerName == Current->GetName()) && (!Found))
 264         {
 265                 Found = Current;
 266                 log(DEBUG,"Found server %s desc %s",Current->GetName().c_str(),Current->GetDesc().c_str());
 267                 return;
 268         }
 269         if (!Found)
 270         {
 271                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 272                 {
 273                         if (!Found)
 274                                 RFindServer(Current->GetChild(q),ServerName);
 275                 }
 276         }
 277         return;
 278 }
 279
 280 TreeServer* FindServer(std::string ServerName)
 281 {
 282         Found = NULL;
 283         RFindServer(TreeRoot,ServerName);
 284         return Found;
 285 }
 286
 287 bool IsServer(std::string ServerName)
 288 {
 289         return LookForServer(TreeRoot,ServerName);
 290 }
 291
 292 class TreeSocket : public InspSocket
 293 {
 294         std::string myhost;
 295         std::string in_buffer;
 296         ServerState LinkState;
 297         std::string InboundServerName;
 298         std::string InboundDescription;
 299         int num_lost_users;
 300         int num_lost_servers;
 301
 302  public:
 303
 304         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
 305                 : InspSocket(host, port, listening, maxtime)
 306         {
 307                 Srv->Log(DEBUG,"Create new listening");
 308                 myhost = host;
 309                 this->LinkState = LISTENER;
 310         }
 311
 312         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
 313                 : InspSocket(host, port, listening, maxtime)
 314         {
 315                 Srv->Log(DEBUG,"Create new outbound");
 316                 myhost = ServerName;
 317                 this->LinkState = CONNECTING;
 318         }
 319
 320         TreeSocket(int newfd, char* ip)
 321                 : InspSocket(newfd, ip)
 322         {
 323                 Srv->Log(DEBUG,"Associate new inbound");
 324                 this->LinkState = WAIT_AUTH_1;
 325         }
 326
 327         virtual bool OnConnected()
 328         {
 329                 if (this->LinkState == CONNECTING)
 330                 {
 331                         Srv->SendOpers("*** Connection to "+myhost+"["+this->GetIP()+"] established.");
 332                         // we should send our details here.
 333                         // if the other side is satisfied, they send theirs.
 334                         // we do not need to change state here.
 335                         for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 336                         {
 337                                 if (x->Name == this->myhost)
 338                                 {
 339                                         // found who we're supposed to be connecting to, send the neccessary gubbins.
 340                                         this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
 341                                         return true;
 342                                 }
 343                         }
 344                 }
 345                 log(DEBUG,"Outbound connection ERROR: Could not find the right link block!");
 346                 return true;
 347         }
 348
 349         virtual void OnError(InspSocketError e)
 350         {
 351         }
 352
 353         virtual int OnDisconnect()
 354         {
 355                 return true;
 356         }
 357
 358         // recursively send the server tree with distances as hops
 359         void SendServers(TreeServer* Current, TreeServer* s, int hops)
 360         {
 361                 char command[1024];
 362                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 363                 {
 364                         TreeServer* recursive_server = Current->GetChild(q);
 365                         if (recursive_server != s)
 366                         {
 367                                 // :source.server SERVER server.name hops :Description
 368                                 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
 369                                 this->WriteLine(command);
 370                                 // down to next level
 371                                 this->SendServers(recursive_server, s, hops+1);
 372                         }
 373                 }
 374         }
 375
 376         void SquitServer(TreeServer* Current)
 377         {
 378                 // recursively squit the servers attached to 'Current'
 379                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 380                 {
 381                         TreeServer* recursive_server = Current->GetChild(q);
 382                         this->SquitServer(recursive_server);
 383                 }
 384                 // Now we've whacked the kids, whack self
 385                 log(DEBUG,"Deleted %s",Current->GetName().c_str());
 386                 num_lost_servers++;
 387                 bool quittingpeople = true;
 388                 while (quittingpeople)
 389                 {
 390                         quittingpeople = false;
 391                         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 392                         {
 393                                 if (!strcasecmp(u->second->server,Current->GetName().c_str()))
 394                                 {
 395                                         log(DEBUG,"Quitting user %s of server %s",u->second->nick,u->second->server);
 396                                         Srv->QuitUser(u->second,Current->GetName()+" "+std::string(Srv->GetServerName()));
 397                                         num_lost_users++;
 398                                         quittingpeople = true;
 399                                         break;
 400                                 }
 401                         }
 402                 }
 403         }
 404
 405         void Squit(TreeServer* Current,std::string reason)
 406         {
 407                 if (Current)
 408                 {
 409                         std::deque<std::string> params;
 410                         params.push_back(Current->GetName());
 411                         params.push_back(":"+reason);
 412                         DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
 413                         if (Current->GetParent() == TreeRoot)
 414                         {
 415                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
 416                         }
 417                         else
 418                         {
 419                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
 420                         }
 421                         num_lost_servers = 0;
 422                         num_lost_users = 0;
 423                         SquitServer(Current);
 424                         Current->Tidy();
 425                         Current->GetParent()->DelChild(Current);
 426                         delete Current;
 427                         WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
 428                 }
 429                 else
 430                 {
 431                         log(DEBUG,"Squit from unknown server");
 432                 }
 433         }
 434
 435         bool ForceMode(std::string source, std::deque<std::string> params)
 436         {
 437                 log(DEBUG,"*** FORCEMODE");
 438                 userrec* who = new userrec;
 439                 who->fd = FD_MAGIC_NUMBER;
 440                 if (params.size() < 2)
 441                         return true;
 442                 char* modelist[255];
 443                 for (unsigned int q = 0; q < params.size(); q++)
 444                 {
 445                         modelist[q] = (char*)params[q].c_str();
 446                 }
 447                 Srv->SendMode(modelist,params.size(),who);
 448                 DoOneToAllButSender(source,"FMODE",params,source);
 449                 log(DEBUG,"***** Duplicated");
 450                 delete who;
 451                 return true;
 452         }
 453
 454         bool ForceJoin(std::string source, std::deque<std::string> params)
 455         {
 456                 if (params.size() < 1)
 457                         return true;
 458                 for (unsigned int channelnum = 0; channelnum < params.size(); channelnum++)
 459                 {
 460                         // process one channel at a time, applying modes.
 461                         char* channel = (char*)params[channelnum].c_str();
 462                         char permissions = *channel;
 463                         char* mode = NULL;
 464                         switch (permissions)
 465                         {
 466                                 case '@':
 467                                         channel++;
 468                                         mode = "+o";
 469                                 break;
 470                                 case '%':
 471                                         channel++;
 472                                         mode = "+h";
 473                                 break;
 474                                 case '+':
 475                                         channel++;
 476                                         mode = "+v";
 477                                 break;
 478                         }
 479                         userrec* who = Srv->FindNick(source);
 480                         if (who)
 481                         {
 482                                 char* key = "";
 483                                 chanrec* chan = Srv->FindChannel(channel);
 484                                 if ((chan) && (*chan->key))
 485                                 {
 486                                         key = chan->key;
 487                                 }
 488                                 Srv->JoinUserToChannel(who,channel,key);
 489                                 if (mode)
 490                                 {
 491                                         char* modelist[3];
 492                                         modelist[0] = channel;
 493                                         modelist[1] = mode;
 494                                         modelist[2] = who->nick;
 495                                         Srv->SendMode(modelist,3,who);
 496                                 }
 497                                 DoOneToAllButSender(source,"FJOIN",params,who->server);
 498                         }
 499                 }
 500                 return true;
 501         }
 502
 503         bool IntroduceClient(std::string source, std::deque<std::string> params)
 504         {
 505                 if (params.size() < 8)
 506                         return true;
 507                 // NICK age nick host dhost ident +modes ip :gecos
 508                 //       0   1    2    3      4     5    6   7
 509                 std::string nick = params[1];
 510                 std::string host = params[2];
 511                 std::string dhost = params[3];
 512                 std::string ident = params[4];
 513                 time_t age = atoi(params[0].c_str());
 514                 std::string modes = params[5];
 515                 if (*(modes.c_str()) == '+')
 516                 {
 517                         char* m = (char*)modes.c_str();
 518                         m++;
 519                         modes = m;
 520                 }
 521                 std::string ip = params[6];
 522                 std::string gecos = params[7];
 523                 char* tempnick = (char*)nick.c_str();
 524                 log(DEBUG,"Introduce client %s!%s@%s",tempnick,ident.c_str(),host.c_str());
 525
 526                 user_hash::iterator iter;
 527                 iter = clientlist.find(tempnick);
 528                 if (iter != clientlist.end())
 529                 {
 530                         // nick collision
 531                         log(DEBUG,"Nick collision on %s!%s@%s",tempnick,ident.c_str(),host.c_str());
 532                         return true;
 533                 }
 534
 535                 clientlist[tempnick] = new userrec();
 536                 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
 537                 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX);
 538                 strlcpy(clientlist[tempnick]->host, host.c_str(),160);
 539                 strlcpy(clientlist[tempnick]->dhost, dhost.c_str(),160);
 540                 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
 541                 strlcpy(clientlist[tempnick]->ident, ident.c_str(),IDENTMAX);
 542                 strlcpy(clientlist[tempnick]->fullname, gecos.c_str(),MAXGECOS);
 543                 clientlist[tempnick]->registered = 7;
 544                 clientlist[tempnick]->signon = age;
 545                 strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
 546                 for (int i = 0; i < MAXCHANS; i++)
 547                 {
 548                         clientlist[tempnick]->chans[i].channel = NULL;
 549                         clientlist[tempnick]->chans[i].uc_modes = 0;
 550                 }
 551                 DoOneToAllButSender(source,"NICK",params,source);
 552                 return true;
 553         }
 554
 555         void SendChannelModes(TreeServer* Current)
 556         {
 557                 char data[MAXBUF];
 558                 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
 559                 {
 560                         snprintf(data,MAXBUF,":%s FMODE %s +%s",Srv->GetServerName().c_str(),c->second->name,chanmodes(c->second));
 561                         this->WriteLine(data);
 562                         if (*c->second->topic)
 563                         {
 564                                 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);
 565                                 this->WriteLine(data);
 566                         }
 567                         for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
 568                         {
 569                                 snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
 570                                 this->WriteLine(data);
 571                         }
 572                 }
 573         }
 574
 575         // send all users and their channels
 576         void SendUsers(TreeServer* Current)
 577         {
 578                 char data[MAXBUF];
 579                 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 580                 {
 581                         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);
 582                         this->WriteLine(data);
 583                         if (strchr(u->second->modes,'o'))
 584                         {
 585                                 this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
 586                         }
 587                         char* chl = chlist(u->second,u->second);
 588                         if (*chl)
 589                         {
 590                                 this->WriteLine(":"+std::string(u->second->nick)+" FJOIN "+std::string(chl));
 591                         }
 592                 }
 593         }
 594
 595         void DoBurst(TreeServer* s)
 596         {
 597                 log(DEBUG,"Beginning network burst");
 598                 Srv->SendOpers("*** Bursting to "+s->GetName()+".");
 599                 this->WriteLine("BURST");
 600                 // Send server tree
 601                 this->SendServers(TreeRoot,s,1);
 602                 // Send users and their channels
 603                 this->SendUsers(s);
 604                 // TODO: Send everything else (channel modes etc)
 605                 this->SendChannelModes(s);
 606                 this->WriteLine("ENDBURST");
 607         }
 608
 609         virtual bool OnDataReady()
 610         {
 611                 char* data = this->Read();
 612                 if (data)
 613                 {
 614                         this->in_buffer += data;
 615                         while (in_buffer.find("\n") != std::string::npos)
 616                         {
 617                                 char* line = (char*)in_buffer.c_str();
 618                                 std::string ret = "";
 619                                 while ((*line != '\n') && (strlen(line)))
 620                                 {
 621                                         ret = ret + *line;
 622                                         line++;
 623                                 }
 624                                 if ((*line == '\n') || (*line == '\r'))
 625                                         line++;
 626                                 in_buffer = line;
 627                                 if (!this->ProcessLine(ret))
 628                                 {
 629                                         return false;
 630                                 }
 631                         }
 632                 }
 633                 return (data != NULL);
 634         }
 635
 636         int WriteLine(std::string line)
 637         {
 638                 return this->Write(line + "\r\n");
 639         }
 640
 641         bool Error(std::deque<std::string> params)
 642         {
 643                 if (params.size() < 1)
 644                         return false;
 645                 std::string Errmsg = params[0];
 646                 std::string SName = myhost;
 647                 if (InboundServerName != "")
 648                 {
 649                         SName = InboundServerName;
 650                 }
 651                 Srv->SendOpers("*** ERROR from "+SName+": "+Errmsg);
 652                 // we will return false to cause the socket to close.
 653                 return false;
 654         }
 655
 656         bool OperType(std::string prefix, std::deque<std::string> params)
 657         {
 658                 if (params.size() != 1)
 659                         return true;
 660                 std::string opertype = params[0];
 661                 userrec* u = Srv->FindNick(prefix);
 662                 if (u)
 663                 {
 664                         strlcpy(u->oper,opertype.c_str(),NICKMAX);
 665                         if (!strchr(u->modes,'o'))
 666                         {
 667                                 strcat(u->modes,"o");
 668                         }
 669                         DoOneToAllButSender(u->server,"OPERTYPE",params,u->server);
 670                 }
 671                 return true;
 672         }
 673
 674         bool RemoteServer(std::string prefix, std::deque<std::string> params)
 675         {
 676                 if (params.size() < 4)
 677                         return false;
 678                 std::string servername = params[0];
 679                 std::string password = params[1];
 680                 int hops = atoi(params[2].c_str());
 681                 std::string description = params[3];
 682                 if (!hops)
 683                 {
 684                         this->WriteLine("ERROR :Protocol error - Introduced remote server with incorrect hopcount!");
 685                         return false;
 686                 }
 687                 TreeServer* ParentOfThis = FindServer(prefix);
 688                 if (!ParentOfThis)
 689                 {
 690                         this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
 691                         return false;
 692                 }
 693                 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
 694                 ParentOfThis->AddChild(Node);
 695                 params[3] = ":" + params[3];
 696                 DoOneToAllButSender(prefix,"SERVER",params,prefix);
 697                 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
 698                 return true;
 699         }
 700
 701         bool Outbound_Reply_Server(std::deque<std::string> params)
 702         {
 703                 if (params.size() < 4)
 704                         return false;
 705                 std::string servername = params[0];
 706                 std::string password = params[1];
 707                 int hops = atoi(params[2].c_str());
 708                 if (hops)
 709                 {
 710                         this->WriteLine("ERROR :Server too far away for authentication");
 711                         return false;
 712                 }
 713                 std::string description = params[3];
 714                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 715                 {
 716                         if ((x->Name == servername) && (x->RecvPass == password))
 717                         {
 718                                 // Begin the sync here. this kickstarts the
 719                                 // other side, waiting in WAIT_AUTH_2 state,
 720                                 // into starting their burst, as it shows
 721                                 // that we're happy.
 722                                 this->LinkState = CONNECTED;
 723                                 // we should add the details of this server now
 724                                 // to the servers tree, as a child of the root
 725                                 // node.
 726                                 TreeServer* Node = new TreeServer(servername,description,TreeRoot,this);
 727                                 TreeRoot->AddChild(Node);
 728                                 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,servername);
 729                                 this->DoBurst(Node);
 730                                 return true;
 731                         }
 732                 }
 733                 this->WriteLine("ERROR :Invalid credentials");
 734                 return false;
 735         }
 736
 737         bool Inbound_Server(std::deque<std::string> params)
 738         {
 739                 if (params.size() < 4)
 740                         return false;
 741                 std::string servername = params[0];
 742                 std::string password = params[1];
 743                 int hops = atoi(params[2].c_str());
 744                 if (hops)
 745                 {
 746                         this->WriteLine("ERROR :Server too far away for authentication");
 747                         return false;
 748                 }
 749                 std::string description = params[3];
 750                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 751                 {
 752                         if ((x->Name == servername) && (x->RecvPass == password))
 753                         {
 754                                 Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+this->GetIP()+"] ("+description+")");
 755                                 this->InboundServerName = servername;
 756                                 this->InboundDescription = description;
 757                                 // this is good. Send our details: Our server name and description and hopcount of 0,
 758                                 // along with the sendpass from this block.
 759                                 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
 760                                 // move to the next state, we are now waiting for THEM.
 761                                 this->LinkState = WAIT_AUTH_2;
 762                                 return true;
 763                         }
 764                 }
 765                 this->WriteLine("ERROR :Invalid credentials");
 766                 return false;
 767         }
 768
 769         std::deque<std::string> Split(std::string line, bool stripcolon)
 770         {
 771                 std::deque<std::string> n;
 772                 std::stringstream s(line);
 773                 std::string param = "";
 774                 n.clear();
 775                 int item = 0;
 776                 while (!s.eof())
 777                 {
 778                         s >> param;
 779                         if ((param != "") && (param != "\n"))
 780                         {
 781                                 if ((param.c_str()[0] == ':') && (item))
 782                                 {
 783                                         char* str = (char*)param.c_str();
 784                                         str++;
 785                                         param = str;
 786                                         std::string append;
 787                                         while (!s.eof())
 788                                         {
 789                                                 append = "";
 790                                                 s >> append;
 791                                                 if (append != "")
 792                                                 {
 793                                                         param = param + " " + append;
 794                                                 }
 795                                         }
 796                                 }
 797                                 item++;
 798                                 n.push_back(param);
 799                                 log(DEBUG,"Line: '%s' added param; '%s'",line.c_str(),param.c_str());
 800                         }
 801                 }
 802                 return n;
 803         }
 804
 805         bool ProcessLine(std::string line)
 806         {
 807                 char* l = (char*)line.c_str();
 808                 while ((strlen(l)) && (l[strlen(l)-1] == '\r') || (l[strlen(l)-1] == '\n'))
 809                         l[strlen(l)-1] = '\0';
 810                 line = l;
 811                 if (line == "")
 812                         return true;
 813                 Srv->Log(DEBUG,"inbound-line: '"+line+"'");
 814                 std::deque<std::string> params = this->Split(line,true);
 815                 std::string command = "";
 816                 std::string prefix = "";
 817                 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
 818                 {
 819                         prefix = params[0];
 820                         command = params[1];
 821                         char* pref = (char*)prefix.c_str();
 822                         prefix = ++pref;
 823                         params.pop_front();
 824                         params.pop_front();
 825                 }
 826                 else
 827                 {
 828                         prefix = "";
 829                         command = params[0];
 830                         params.pop_front();
 831                 }
 832
 833                 switch (this->LinkState)
 834                 {
 835                         TreeServer* Node;
 836
 837                         case WAIT_AUTH_1:
 838                                 // Waiting for SERVER command from remote server. Server initiating
 839                                 // the connection sends the first SERVER command, listening server
 840                                 // replies with theirs if its happy, then if the initiator is happy,
 841                                 // it starts to send its net sync, which starts the merge, otherwise
 842                                 // it sends an ERROR.
 843                                 if (command == "SERVER")
 844                                 {
 845                                         return this->Inbound_Server(params);
 846                                 }
 847                                 else if (command == "ERROR")
 848                                 {
 849                                         return this->Error(params);
 850                                 }
 851                         break;
 852                         case WAIT_AUTH_2:
 853                                 // Waiting for start of other side's netmerge to say they liked our
 854                                 // password.
 855                                 if (command == "SERVER")
 856                                 {
 857                                         // cant do this, they sent it to us in the WAIT_AUTH_1 state!
 858                                         // silently ignore.
 859                                         return true;
 860                                 }
 861                                 else if (command == "BURST")
 862                                 {
 863                                         this->LinkState = CONNECTED;
 864                                         Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
 865                                         TreeRoot->AddChild(Node);
 866                                         params.clear();
 867                                         params.push_back(InboundServerName);
 868                                         params.push_back("*");
 869                                         params.push_back("1");
 870                                         params.push_back(":"+InboundDescription);
 871                                         DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
 872                                         this->DoBurst(Node);
 873                                 }
 874                                 else if (command == "ERROR")
 875                                 {
 876                                         return this->Error(params);
 877                                 }
 878
 879                         break;
 880                         case LISTENER:
 881                                 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
 882                                 return false;
 883                         break;
 884                         case CONNECTING:
 885                                 if (command == "SERVER")
 886                                 {
 887                                         // another server we connected to, which was in WAIT_AUTH_1 state,
 888                                         // has just sent us their credentials. If we get this far, theyre
 889                                         // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
 890                                         // if we're happy with this, we should send our netburst which
 891                                         // kickstarts the merge.
 892                                         return this->Outbound_Reply_Server(params);
 893                                 }
 894                         break;
 895                         case CONNECTED:
 896                                 // This is the 'authenticated' state, when all passwords
 897                                 // have been exchanged and anything past this point is taken
 898                                 // as gospel.
 899                                 std::string target = "";
 900                                 if ((command == "NICK") && (params.size() > 1))
 901                                 {
 902                                         return this->IntroduceClient(prefix,params);
 903                                 }
 904                                 else if (command == "FJOIN")
 905                                 {
 906                                         return this->ForceJoin(prefix,params);
 907                                 }
 908                                 else if (command == "SERVER")
 909                                 {
 910                                         return this->RemoteServer(prefix,params);
 911                                 }
 912                                 else if (command == "OPERTYPE")
 913                                 {
 914                                         return this->OperType(prefix,params);
 915                                 }
 916                                 else if (command == "FMODE")
 917                                 {
 918                                         return this->ForceMode(prefix,params);
 919                                 }
 920                                 else if (command == "SQUIT")
 921                                 {
 922                                         if (params.size() == 2)
 923                                         {
 924                                                 this->Squit(FindServer(params[0]),params[1]);
 925                                         }
 926                                         return true;
 927                                 }
 928                                 else
 929                                 {
 930                                         // not a special inter-server command.
 931                                         // Emulate the actual user doing the command,
 932                                         // this saves us having a huge ugly parser.
 933                                         userrec* who = Srv->FindNick(prefix);
 934                                         std::string sourceserv = this->myhost;
 935                                         if (this->InboundServerName != "")
 936                                         {
 937                                                 sourceserv = this->InboundServerName;
 938                                         }
 939                                         if (who)
 940                                         {
 941                                                 // its a user
 942                                                 target = who->server;
 943                                                 char* strparams[127];
 944                                                 for (unsigned int q = 0; q < params.size(); q++)
 945                                                 {
 946                                                         strparams[q] = (char*)params[q].c_str();
 947                                                 }
 948                                                 log(DEBUG,"*** CALL COMMAND HANDLER FOR %s, SOURCE: '%s'",command.c_str(),who->nick);
 949                                                 Srv->CallCommandHandler(command, strparams, params.size(), who);
 950                                         }
 951                                         else
 952                                         {
 953                                                 // its not a user. Its either a server, or somethings screwed up.
 954                                                 if (IsServer(prefix))
 955                                                 {
 956                                                         target = Srv->GetServerName();
 957                                                 }
 958                                                 else
 959                                                 {
 960                                                         log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
 961                                                         return true;
 962                                                 }
 963                                         }
 964                                         return DoOneToAllButSenderRaw(line,sourceserv);
 965
 966                                 }
 967                                 return true;
 968                         break;
 969                 }
 970                 return true;
 971         }
 972
 973         virtual void OnTimeout()
 974         {
 975                 if (this->LinkState == CONNECTING)
 976                 {
 977                         Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
 978                 }
 979         }
 980
 981         virtual void OnClose()
 982         {
 983                 // Connection closed.
 984                 // If the connection is fully up (state CONNECTED)
 985                 // then propogate a netsplit to all peers.
 986                 std::string quitserver = this->myhost;
 987                 if (this->InboundServerName != "")
 988                 {
 989                         quitserver = this->InboundServerName;
 990                 }
 991                 TreeServer* s = FindServer(quitserver);
 992                 if (s)
 993                 {
 994                         std::deque<std::string> params;
 995                         params.push_back(quitserver);
 996                         params.push_back(":Remote host closed the connection");
 997                         DoOneToAllButSender(Srv->GetServerName(),"SQUIT",params,quitserver);
 998                         Squit(s,"Remote host closed the connection");
 999                 }
1000         }
1001
1002         virtual int OnIncomingConnection(int newsock, char* ip)
1003         {
1004                 TreeSocket* s = new TreeSocket(newsock, ip);
1005                 Srv->AddSocket(s);
1006                 return true;
1007         }
1008 };
1009
1010 bool DoOneToAllButSenderRaw(std::string data,std::string omit)
1011 {
1012         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1013         {
1014                 TreeServer* Route = TreeRoot->GetChild(x);
1015                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (BestRouteTo(omit) != Route))
1016                 {
1017                         TreeSocket* Sock = Route->GetSocket();
1018                         log(DEBUG,"Sending RAW to %s",Route->GetName().c_str());
1019                         Sock->WriteLine(data);
1020                 }
1021         }
1022         return true;
1023 }
1024
1025 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> params, std::string omit)
1026 {
1027         log(DEBUG,"ALLBUTONE: Comes from %s SHOULD NOT go back to %s",prefix.c_str(),omit.c_str());
1028         // TODO: Special stuff with privmsg and notice
1029         std::string FullLine = ":" + prefix + " " + command;
1030         log(DEBUG,"*** ALLBUTONE: %d entries!",params.size());
1031         for (unsigned int x = 0; x < params.size(); x++)
1032         {
1033                 FullLine = FullLine + " " + params[x];
1034                 Srv->Log(DEBUG,"Append "+params[x]+" to line, now: "+FullLine);
1035         }
1036         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1037         {
1038                 TreeServer* Route = TreeRoot->GetChild(x);
1039                 // Send the line IF:
1040                 // The route has a socket (its a direct connection)
1041                 // The route isnt the one to be omitted
1042                 // The route isnt the path to the one to be omitted
1043                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (BestRouteTo(omit) != Route))
1044                 {
1045                         TreeSocket* Sock = Route->GetSocket();
1046                         log(DEBUG,"Sending to %s",Route->GetName().c_str());
1047                         Sock->WriteLine(FullLine);
1048                 }
1049         }
1050         return true;
1051 }
1052
1053 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> params)
1054 {
1055         std::string FullLine = ":" + prefix + " " + command;
1056         for (unsigned int x = 0; x < params.size(); x++)
1057         {
1058                 FullLine = FullLine + " " + params[x];
1059         }
1060         for (unsigned int x = 0; x < TreeRoot->ChildCount(); x++)
1061         {
1062                 TreeServer* Route = TreeRoot->GetChild(x);
1063                 if (Route->GetSocket())
1064                 {
1065                         TreeSocket* Sock = Route->GetSocket();
1066                         Sock->WriteLine(FullLine);
1067                 }
1068         }
1069         return true;
1070 }
1071
1072 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> params, std::string target)
1073 {
1074         TreeServer* Route = BestRouteTo(target);
1075         if (Route)
1076         {
1077                 std::string FullLine = ":" + prefix + " " + command;
1078                 for (unsigned int x = 0; x < params.size(); x++)
1079                 {
1080                         FullLine = FullLine + " " + params[x];
1081                 }
1082                 if (Route->GetSocket())
1083                 {
1084                         TreeSocket* Sock = Route->GetSocket();
1085                         Sock->WriteLine(FullLine);
1086                 }
1087                 return true;
1088         }
1089         else
1090         {
1091                 log(DEBUG,"Could not route message with target %s: %s",target.c_str(),command.c_str());
1092                 return true;
1093         }
1094 }
1095
1096
1097 class ModuleSpanningTree : public Module
1098 {
1099         std::vector<TreeSocket*> Bindings;
1100         int line;
1101
1102  public:
1103
1104         void ReadConfiguration(bool rebind)
1105         {
1106                 if (rebind)
1107                 {
1108                         for (int j =0; j < Conf->Enumerate("bind"); j++)
1109                         {
1110                                 std::string Type = Conf->ReadValue("bind","type",j);
1111                                 std::string IP = Conf->ReadValue("bind","address",j);
1112                                 long Port = Conf->ReadInteger("bind","port",j,true);
1113                                 if (Type == "servers")
1114                                 {
1115                                         if (IP == "*")
1116                                         {
1117                                                 IP = "";
1118                                         }
1119                                         TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
1120                                         if (listener->GetState() == I_LISTENING)
1121                                         {
1122                                                 Srv->AddSocket(listener);
1123                                                 Bindings.push_back(listener);
1124                                         }
1125                                         else
1126                                         {
1127                                                 log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
1128                                                 listener->Close();
1129                                                 delete listener;
1130                                         }
1131                                 }
1132                         }
1133                 }
1134                 LinkBlocks.clear();
1135                 for (int j =0; j < Conf->Enumerate("link"); j++)
1136                 {
1137                         Link L;
1138                         L.Name = Conf->ReadValue("link","name",j);
1139                         L.IPAddr = Conf->ReadValue("link","ipaddr",j);
1140                         L.Port = Conf->ReadInteger("link","port",j,true);
1141                         L.SendPass = Conf->ReadValue("link","sendpass",j);
1142                         L.RecvPass = Conf->ReadValue("link","recvpass",j);
1143                         LinkBlocks.push_back(L);
1144                         log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
1145                 }
1146         }
1147
1148         ModuleSpanningTree()
1149         {
1150                 Srv = new Server;
1151                 Conf = new ConfigReader;
1152                 Bindings.clear();
1153
1154                 // Create the root of the tree
1155                 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
1156
1157                 ReadConfiguration(true);
1158         }
1159
1160         void ShowLinks(TreeServer* Current, userrec* user, int hops)
1161         {
1162                 std::string Parent = TreeRoot->GetName();
1163                 if (Current->GetParent())
1164                 {
1165                         Parent = Current->GetParent()->GetName();
1166                 }
1167                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
1168                 {
1169                         ShowLinks(Current->GetChild(q),user,hops+1);
1170                 }
1171                 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),Parent.c_str(),hops,Current->GetDesc().c_str());
1172         }
1173
1174         void HandleLinks(char** parameters, int pcnt, userrec* user)
1175         {
1176                 ShowLinks(TreeRoot,user,0);
1177                 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
1178                 return;
1179         }
1180
1181         void HandleLusers(char** parameters, int pcnt, userrec* user)
1182         {
1183                 return;
1184         }
1185
1186         // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
1187
1188         void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80])
1189         {
1190                 if (line < 128)
1191                 {
1192                         for (int t = 0; t < depth; t++)
1193                         {
1194                                 matrix[line][t] = ' ';
1195                         }
1196                         strlcpy(&matrix[line][depth],Current->GetName().c_str(),80);
1197                         line++;
1198                         for (unsigned int q = 0; q < Current->ChildCount(); q++)
1199                         {
1200                                 ShowMap(Current->GetChild(q),user,depth+2,matrix);
1201                         }
1202                 }
1203         }
1204
1205         // Ok, prepare to be confused.
1206         // After much mulling over how to approach this, it struck me that
1207         // the 'usual' way of doing a /MAP isnt the best way. Instead of
1208         // keeping track of a ton of ascii characters, and line by line
1209         // under recursion working out where to place them using multiplications
1210         // and divisons, we instead render the map onto a backplane of characters
1211         // (a character matrix), then draw the branches as a series of "L" shapes
1212         // from the nodes. This is not only friendlier on CPU it uses less stack.
1213
1214         void HandleMap(char** parameters, int pcnt, userrec* user)
1215         {
1216                 // This array represents a virtual screen which we will
1217                 // "scratch" draw to, as the console device of an irc
1218                 // client does not provide for a proper terminal.
1219                 char matrix[128][80];
1220                 for (unsigned int t = 0; t < 128; t++)
1221                 {
1222                         matrix[t][0] = '\0';
1223                 }
1224                 line = 0;
1225                 // The only recursive bit is called here.
1226                 ShowMap(TreeRoot,user,0,matrix);
1227                 // Process each line one by one. The algorithm has a limit of
1228                 // 128 servers (which is far more than a spanning tree should have
1229                 // anyway, so we're ok). This limit can be raised simply by making
1230                 // the character matrix deeper, 128 rows taking 10k of memory.
1231                 for (int l = 1; l < line; l++)
1232                 {
1233                         // scan across the line looking for the start of the
1234                         // servername (the recursive part of the algorithm has placed
1235                         // the servers at indented positions depending on what they
1236                         // are related to)
1237                         int first_nonspace = 0;
1238                         while (matrix[l][first_nonspace] == ' ')
1239                         {
1240                                 first_nonspace++;
1241                         }
1242                         first_nonspace--;
1243                         // Draw the `- (corner) section: this may be overwritten by
1244                         // another L shape passing along the same vertical pane, becoming
1245                         // a |- (branch) section instead.
1246                         matrix[l][first_nonspace] = '-';
1247                         matrix[l][first_nonspace-1] = '`';
1248                         int l2 = l - 1;
1249                         // Draw upwards until we hit the parent server, causing possibly
1250                         // other corners (`-) to become branches (|-)
1251                         while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
1252                         {
1253                                 matrix[l2][first_nonspace-1] = '|';
1254                                 l2--;
1255                         }
1256                 }
1257                 // dump the whole lot to the user. This is the easy bit, honest.
1258                 for (int t = 0; t < line; t++)
1259                 {
1260                         WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
1261                 }
1262                 WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
1263                 return;
1264         }
1265
1266         int HandleSquit(char** parameters, int pcnt, userrec* user)
1267         {
1268                 return 1;
1269         }
1270
1271         int HandleConnect(char** parameters, int pcnt, userrec* user)
1272         {
1273                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
1274                 {
1275                         if (Srv->MatchText(x->Name.c_str(),parameters[0]))
1276                         {
1277                                 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: %s (%s:%d)",user->nick,x->Name.c_str(),x->IPAddr.c_str(),x->Port);
1278                                 TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name);
1279                                 Srv->AddSocket(newsocket);
1280                                 return 1;
1281                         }
1282                 }
1283                 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No matching server could be found in the config file.",user->nick);
1284                 return 1;
1285         }
1286
1287         virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user)
1288         {
1289                 if (command == "CONNECT")
1290                 {
1291                         return this->HandleConnect(parameters,pcnt,user);
1292                 }
1293                 else if (command == "SQUIT")
1294                 {
1295                         return this->HandleSquit(parameters,pcnt,user);
1296                 }
1297                 else if (command == "MAP")
1298                 {
1299                         this->HandleMap(parameters,pcnt,user);
1300                         return 1;
1301                 }
1302                 else if (command == "LUSERS")
1303                 {
1304                         this->HandleLusers(parameters,pcnt,user);
1305                         return 1;
1306                 }
1307                 else if (command == "LINKS")
1308                 {
1309                         this->HandleLinks(parameters,pcnt,user);
1310                         return 1;
1311                 }
1312                 return 0;
1313         }
1314
1315         virtual void OnUserNotice(userrec* user, void* dest, int target_type, std::string text)
1316         {
1317                 if (target_type == TYPE_USER)
1318                 {
1319                         userrec* d = (userrec*)dest;
1320                         if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1321                         {
1322                                 std::deque<std::string> params;
1323                                 params.clear();
1324                                 params.push_back(d->nick);
1325                                 params.push_back(":"+text);
1326                                 DoOneToOne(user->nick,"NOTICE",params,d->server);
1327                         }
1328                 }
1329                 else
1330                 {
1331                         if (std::string(user->server) == Srv->GetServerName())
1332                         {
1333                                 chanrec *c = (chanrec*)dest;
1334                                 std::deque<std::string> params;
1335                                 params.push_back(c->name);
1336                                 params.push_back(":"+text);
1337                                 DoOneToMany(user->nick,"NOTICE",params);
1338                         }
1339                 }
1340         }
1341
1342         virtual void OnUserMessage(userrec* user, void* dest, int target_type, std::string text)
1343         {
1344                 if (target_type == TYPE_USER)
1345                 {
1346                         // route private messages which are targetted at clients only to the server
1347                         // which needs to receive them
1348                         userrec* d = (userrec*)dest;
1349                         if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
1350                         {
1351                                 std::deque<std::string> params;
1352                                 params.clear();
1353                                 params.push_back(d->nick);
1354                                 params.push_back(":"+text);
1355                                 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
1356                         }
1357                 }
1358                 else
1359                 {
1360                         if (std::string(user->server) == Srv->GetServerName())
1361                         {
1362                                 chanrec *c = (chanrec*)dest;
1363                                 std::deque<std::string> params;
1364                                 params.push_back(c->name);
1365                                 params.push_back(":"+text);
1366                                 DoOneToMany(user->nick,"PRIVMSG",params);
1367                         }
1368                 }
1369         }
1370
1371         virtual void OnUserJoin(userrec* user, chanrec* channel)
1372         {
1373                 // Only do this for local users
1374                 if (std::string(user->server) == Srv->GetServerName())
1375                 {
1376                         log(DEBUG,"**** User on %s JOINS %s",user->server,channel->name);
1377                         std::deque<std::string> params;
1378                         params.clear();
1379                         params.push_back(channel->name);
1380                         if (*channel->key)
1381                         {
1382                                 log(DEBUG,"**** With key %s",channel->key);
1383                                 // if the channel has a key, force the join by emulating the key.
1384                                 params.push_back(channel->key);
1385                         }
1386                         DoOneToMany(user->nick,"JOIN",params);
1387                 }
1388         }
1389
1390         virtual void OnUserPart(userrec* user, chanrec* channel)
1391         {
1392                 if (std::string(user->server) == Srv->GetServerName())
1393                 {
1394                         log(DEBUG,"**** User on %s PARTS %s",user->server,channel->name);
1395                         std::deque<std::string> params;
1396                         params.clear();
1397                         params.push_back(channel->name);
1398                         DoOneToMany(user->nick,"PART",params);
1399                 }
1400         }
1401
1402         virtual void OnUserConnect(userrec* user)
1403         {
1404                 char agestr[MAXBUF];
1405                 if (std::string(user->server) == Srv->GetServerName())
1406                 {
1407                         log(DEBUG,"**** User on %s CONNECTS: %s",user->server,user->nick);
1408                         std::deque<std::string> params;
1409                         snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
1410                         params.clear();
1411                         params.push_back(agestr);
1412                         params.push_back(user->nick);
1413                         params.push_back(user->host);
1414                         params.push_back(user->dhost);
1415                         params.push_back(user->ident);
1416                         params.push_back("+"+std::string(user->modes));
1417                         params.push_back(user->ip);
1418                         params.push_back(":"+std::string(user->fullname));
1419                         DoOneToMany(Srv->GetServerName(),"NICK",params);
1420                 }
1421         }
1422
1423         virtual void OnUserQuit(userrec* user, std::string reason)
1424         {
1425                 if (std::string(user->server) == Srv->GetServerName())
1426                 {
1427                         log(DEBUG,"**** User on %s QUITS: %s",user->server,user->nick);
1428                         std::deque<std::string> params;
1429                         params.push_back(":"+reason);
1430                         DoOneToMany(user->nick,"QUIT",params);
1431                 }
1432         }
1433
1434         virtual void OnUserPostNick(userrec* user, std::string oldnick)
1435         {
1436                 if (std::string(user->server) == Srv->GetServerName())
1437                 {
1438                         log(DEBUG,"**** User on %s changes NICK: %s",user->server,user->nick);
1439                         std::deque<std::string> params;
1440                         params.push_back(user->nick);
1441                         DoOneToMany(oldnick,"NICK",params);
1442                 }
1443         }
1444
1445         // note: the protocol does not allow direct umode +o except
1446         // via NICK with 8 params. sending OPERTYPE infers +o modechange
1447         // locally.
1448         virtual void OnOper(userrec* user, std::string opertype)
1449         {
1450                 if (std::string(user->server) == Srv->GetServerName())
1451                 {
1452                         std::deque<std::string> params;
1453                         params.push_back(opertype);
1454                         DoOneToMany(user->nick,"OPERTYPE",params);
1455                 }
1456         }
1457
1458         virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
1459         {
1460                 log(DEBUG,"*** ONMODE TRIGGER");
1461                 if (std::string(user->server) == Srv->GetServerName())
1462                 {
1463                         log(DEBUG,"*** LOCAL");
1464                         if (target_type == TYPE_USER)
1465                         {
1466                                 userrec* u = (userrec*)dest;
1467                                 std::deque<std::string> params;
1468                                 params.push_back(u->nick);
1469                                 params.push_back(text);
1470                                 DoOneToMany(user->nick,"MODE",params);
1471                         }
1472                         else
1473                         {
1474                                 chanrec* c = (chanrec*)dest;
1475                                 std::deque<std::string> params;
1476                                 params.push_back(c->name);
1477                                 params.push_back(text);
1478                                 DoOneToMany(user->nick,"MODE",params);
1479                         }
1480                 }
1481         }
1482
1483         virtual ~ModuleSpanningTree()
1484         {
1485                 delete Srv;
1486         }
1487
1488         virtual Version GetVersion()
1489         {
1490                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
1491         }
1492 };
1493
1494
1495 class ModuleSpanningTreeFactory : public ModuleFactory
1496 {
1497  public:
1498         ModuleSpanningTreeFactory()
1499         {
1500         }
1501
1502         ~ModuleSpanningTreeFactory()
1503         {
1504         }
1505
1506         virtual Module * CreateModule()
1507         {
1508                 return new ModuleSpanningTree;
1509         }
1510
1511 };
1512
1513
1514 extern "C" void * init_module( void )
1515 {
1516         return new ModuleSpanningTreeFactory;
1517 }
1518