src/modules/m_spanningtree.cpp

   1 /*   +------------------------------------+
   2  *   | Inspire Internet Relay Chat Daemon |
   3  *   +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 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 /* $ModDesc: Povides a spanning tree server link protocol */
  18
  19 using namespace std;
  20
  21 #include <stdio.h>
  22 #include <vector>
  23 #include <deque>
  24 #include "globals.h"
  25 #include "inspircd_config.h"
  26 #ifdef GCC3
  27 #include <ext/hash_map>
  28 #else
  29 #include <hash_map>
  30 #endif
  31 #include "users.h"
  32 #include "channels.h"
  33 #include "modules.h"
  34 #include "commands.h"
  35 #include "socket.h"
  36 #include "helperfuncs.h"
  37 #include "inspircd.h"
  38 #include "inspstring.h"
  39 #include "hashcomp.h"
  40 #include "message.h"
  41 #include "xline.h"
  42 #include "typedefs.h"
  43 #include "cull_list.h"
  44 #include "aes.h"
  45
  46 #ifdef GCC3
  47 #define nspace __gnu_cxx
  48 #else
  49 #define nspace std
  50 #endif
  51
  52 /*
  53  * The server list in InspIRCd is maintained as two structures
  54  * which hold the data in different ways. Most of the time, we
  55  * want to very quicky obtain three pieces of information:
  56  *
  57  * (1) The information on a server
  58  * (2) The information on the server we must send data through
  59  *     to actually REACH the server we're after
  60  * (3) Potentially, the child/parent objects of this server
  61  *
  62  * The InspIRCd spanning protocol provides easy access to these
  63  * by storing the data firstly in a recursive structure, where
  64  * each item references its parent item, and a dynamic list
  65  * of child items, and another structure which stores the items
  66  * hashed, linearly. This means that if we want to find a server
  67  * by name quickly, we can look it up in the hash, avoiding
  68  * any O(n) lookups. If however, during a split or sync, we want
  69  * to apply an operation to a server, and any of its child objects
  70  * we can resort to recursion to walk the tree structure.
  71  */
  72
  73 class ModuleSpanningTree;
  74 static ModuleSpanningTree* TreeProtocolModule;
  75
  76 extern ServerConfig* Config;
  77 extern InspIRCd* ServerInstance;
  78 extern std::vector<Module*> modules;
  79 extern std::vector<ircd_module*> factory;
  80 extern int MODCOUNT;
  81
  82 /* Any socket can have one of five states at any one time.
  83  * The LISTENER state indicates a socket which is listening
  84  * for connections. It cannot receive data itself, only incoming
  85  * sockets.
  86  * The CONNECTING state indicates an outbound socket which is
  87  * waiting to be writeable.
  88  * The WAIT_AUTH_1 state indicates the socket is outbound and
  89  * has successfully connected, but has not yet sent and received
  90  * SERVER strings.
  91  * The WAIT_AUTH_2 state indicates that the socket is inbound
  92  * (allocated by a LISTENER) but has not yet sent and received
  93  * SERVER strings.
  94  * The CONNECTED state represents a fully authorized, fully
  95  * connected server.
  96  */
  97 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
  98
  99 /* We need to import these from the core for use in netbursts */
 100 extern user_hash clientlist;
 101 extern chan_hash chanlist;
 102
 103 /* Foward declarations */
 104 class TreeServer;
 105 class TreeSocket;
 106
 107 /* This variable represents the root of the server tree
 108  * (for all intents and purposes, it's us)
 109  */
 110 TreeServer *TreeRoot;
 111
 112 static Server* Srv;
 113
 114 /* This hash_map holds the hash equivalent of the server
 115  * tree, used for rapid linear lookups.
 116  */
 117 typedef nspace::hash_map<std::string, TreeServer*, nspace::hash<string>, irc::StrHashComp> server_hash;
 118 server_hash serverlist;
 119
 120 /* More forward declarations */
 121 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> &params, std::string target);
 122 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> &params, std::string omit);
 123 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> &params);
 124 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> &params);
 125 void ReadConfiguration(bool rebind);
 126
 127 /* Flatten links and /MAP for non-opers */
 128 bool FlatLinks;
 129 /* Hide U-Lined servers in /MAP and /LINKS */
 130 bool HideULines;
 131
 132 /* Imported from xline.cpp for use during netburst */
 133 extern std::vector<KLine> klines;
 134 extern std::vector<GLine> glines;
 135 extern std::vector<ZLine> zlines;
 136 extern std::vector<QLine> qlines;
 137 extern std::vector<ELine> elines;
 138 extern std::vector<KLine> pklines;
 139 extern std::vector<GLine> pglines;
 140 extern std::vector<ZLine> pzlines;
 141 extern std::vector<QLine> pqlines;
 142 extern std::vector<ELine> pelines;
 143
 144 /* Each server in the tree is represented by one class of
 145  * type TreeServer. A locally connected TreeServer can
 146  * have a class of type TreeSocket associated with it, for
 147  * remote servers, the TreeSocket entry will be NULL.
 148  * Each server also maintains a pointer to its parent
 149  * (NULL if this server is ours, at the top of the tree)
 150  * and a pointer to its "Route" (see the comments in the
 151  * constructors below), and also a dynamic list of pointers
 152  * to its children which can be iterated recursively
 153  * if required. Creating or deleting objects of type
 154  i* TreeServer automatically maintains the hash_map of
 155  * TreeServer items, deleting and inserting them as they
 156  * are created and destroyed.
 157  */
 158
 159 class TreeServer
 160 {
 161         TreeServer* Parent;                     /* Parent entry */
 162         TreeServer* Route;                      /* Route entry */
 163         std::vector<TreeServer*> Children;      /* List of child objects */
 164         irc::string ServerName;                 /* Server's name */
 165         std::string ServerDesc;                 /* Server's description */
 166         std::string VersionString;              /* Version string or empty string */
 167         int UserCount;                          /* Not used in this version */
 168         int OperCount;                          /* Not used in this version */
 169         TreeSocket* Socket;                     /* For directly connected servers this points at the socket object */
 170         time_t NextPing;                        /* After this time, the server should be PINGed*/
 171         bool LastPingWasGood;                   /* True if the server responded to the last PING with a PONG */
 172         std::map<userrec*,userrec*> Users;      /* Users on this server */
 173
 174  public:
 175
 176         /* We don't use this constructor. Its a dummy, and won't cause any insertion
 177          * of the TreeServer into the hash_map. See below for the two we DO use.
 178          */
 179         TreeServer()
 180         {
 181                 Parent = NULL;
 182                 ServerName = "";
 183                 ServerDesc = "";
 184                 VersionString = "";
 185                 UserCount = OperCount = 0;
 186                 VersionString = Srv->GetVersion();
 187         }
 188
 189         /* We use this constructor only to create the 'root' item, TreeRoot, which
 190          * represents our own server. Therefore, it has no route, no parent, and
 191          * no socket associated with it. Its version string is our own local version.
 192          */
 193         TreeServer(std::string Name, std::string Desc) : ServerName(Name.c_str()), ServerDesc(Desc)
 194         {
 195                 Parent = NULL;
 196                 VersionString = "";
 197                 UserCount = OperCount = 0;
 198                 VersionString = Srv->GetVersion();
 199                 Route = NULL;
 200                 Socket = NULL; /* Fix by brain */
 201                 AddHashEntry();
 202         }
 203
 204         /* When we create a new server, we call this constructor to initialize it.
 205          * This constructor initializes the server's Route and Parent, and sets up
 206          * its ping counters so that it will be pinged one minute from now.
 207          */
 208         TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock)
 209         {
 210                 VersionString = "";
 211                 UserCount = OperCount = 0;
 212                 this->SetNextPingTime(time(NULL) + 120);
 213                 this->SetPingFlag();
 214
 215                 /* find the 'route' for this server (e.g. the one directly connected
 216                  * to the local server, which we can use to reach it)
 217                  *
 218                  * In the following example, consider we have just added a TreeServer
 219                  * class for server G on our network, of which we are server A.
 220                  * To route traffic to G (marked with a *) we must send the data to
 221                  * B (marked with a +) so this algorithm initializes the 'Route'
 222                  * value to point at whichever server traffic must be routed through
 223                  * to get here. If we were to try this algorithm with server B,
 224                  * the Route pointer would point at its own object ('this').
 225                  *
 226                  *              A
 227                  *             / \
 228                  *          + B   C
 229                  *           / \   \
 230                  *          D   E   F
 231                  *         /         \
 232                  *      * G           H
 233                  *
 234                  * We only run this algorithm when a server is created, as
 235                  * the routes remain constant while ever the server exists, and
 236                  * do not need to be re-calculated.
 237                  */
 238
 239                 Route = Above;
 240                 if (Route == TreeRoot)
 241                 {
 242                         Route = this;
 243                 }
 244                 else
 245                 {
 246                         while (this->Route->GetParent() != TreeRoot)
 247                         {
 248                                 this->Route = Route->GetParent();
 249                         }
 250                 }
 251
 252                 /* Because recursive code is slow and takes a lot of resources,
 253                  * we store two representations of the server tree. The first
 254                  * is a recursive structure where each server references its
 255                  * children and its parent, which is used for netbursts and
 256                  * netsplits to dump the whole dataset to the other server,
 257                  * and the second is used for very fast lookups when routing
 258                  * messages and is instead a hash_map, where each item can
 259                  * be referenced by its server name. The AddHashEntry()
 260                  * call below automatically inserts each TreeServer class
 261                  * into the hash_map as it is created. There is a similar
 262                  * maintainance call in the destructor to tidy up deleted
 263                  * servers.
 264                  */
 265
 266                 this->AddHashEntry();
 267         }
 268
 269         void AddUser(userrec* user)
 270         {
 271                 log(DEBUG,"Add user %s to server %s",user->nick,this->ServerName.c_str());
 272                 std::map<userrec*,userrec*>::iterator iter;
 273                 iter = Users.find(user);
 274                 if (iter == Users.end())
 275                         Users[user] = user;
 276         }
 277
 278         void DelUser(userrec* user)
 279         {
 280                 log(DEBUG,"Remove user %s from server %s",user->nick,this->ServerName.c_str());
 281                 std::map<userrec*,userrec*>::iterator iter;
 282                 iter = Users.find(user);
 283                 if (iter != Users.end())
 284                         Users.erase(iter);
 285         }
 286
 287         int QuitUsers(const std::string &reason)
 288         {
 289                 int x = Users.size();
 290                 log(DEBUG,"Removing all users from server %s",this->ServerName.c_str());
 291                 const char* reason_s = reason.c_str();
 292                 for (std::map<userrec*,userrec*>::iterator n = Users.begin(); n != Users.end(); n++)
 293                 {
 294                         log(DEBUG,"Kill %s",n->second->nick);
 295                         kill_link(n->second,reason_s);
 296                 }
 297                 Users.clear();
 298                 return x;
 299         }
 300
 301         /* This method is used to add the structure to the
 302          * hash_map for linear searches. It is only called
 303          * by the constructors.
 304          */
 305         void AddHashEntry()
 306         {
 307                 server_hash::iterator iter;
 308                 iter = serverlist.find(this->ServerName.c_str());
 309                 if (iter == serverlist.end())
 310                         serverlist[this->ServerName.c_str()] = this;
 311         }
 312
 313         /* This method removes the reference to this object
 314          * from the hash_map which is used for linear searches.
 315          * It is only called by the default destructor.
 316          */
 317         void DelHashEntry()
 318         {
 319                 server_hash::iterator iter;
 320                 iter = serverlist.find(this->ServerName.c_str());
 321                 if (iter != serverlist.end())
 322                         serverlist.erase(iter);
 323         }
 324
 325         /* These accessors etc should be pretty self-
 326          * explanitory.
 327          */
 328
 329         TreeServer* GetRoute()
 330         {
 331                 return Route;
 332         }
 333
 334         std::string GetName()
 335         {
 336                 return ServerName.c_str();
 337         }
 338
 339         std::string GetDesc()
 340         {
 341                 return ServerDesc;
 342         }
 343
 344         std::string GetVersion()
 345         {
 346                 return VersionString;
 347         }
 348
 349         void SetNextPingTime(time_t t)
 350         {
 351                 this->NextPing = t;
 352                 LastPingWasGood = false;
 353         }
 354
 355         time_t NextPingTime()
 356         {
 357                 return NextPing;
 358         }
 359
 360         bool AnsweredLastPing()
 361         {
 362                 return LastPingWasGood;
 363         }
 364
 365         void SetPingFlag()
 366         {
 367                 LastPingWasGood = true;
 368         }
 369
 370         int GetUserCount()
 371         {
 372                 return UserCount;
 373         }
 374
 375         void AddUserCount()
 376         {
 377                 UserCount++;
 378         }
 379
 380         void DelUserCount()
 381         {
 382                 UserCount--;
 383         }
 384
 385         int GetOperCount()
 386         {
 387                 return OperCount;
 388         }
 389
 390         TreeSocket* GetSocket()
 391         {
 392                 return Socket;
 393         }
 394
 395         TreeServer* GetParent()
 396         {
 397                 return Parent;
 398         }
 399
 400         void SetVersion(std::string Version)
 401         {
 402                 VersionString = Version;
 403         }
 404
 405         unsigned int ChildCount()
 406         {
 407                 return Children.size();
 408         }
 409
 410         TreeServer* GetChild(unsigned int n)
 411         {
 412                 if (n < Children.size())
 413                 {
 414                         /* Make sure they  cant request
 415                          * an out-of-range object. After
 416                          * all we know what these programmer
 417                          * types are like *grin*.
 418                          */
 419                         return Children[n];
 420                 }
 421                 else
 422                 {
 423                         return NULL;
 424                 }
 425         }
 426
 427         void AddChild(TreeServer* Child)
 428         {
 429                 Children.push_back(Child);
 430         }
 431
 432         bool DelChild(TreeServer* Child)
 433         {
 434                 for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 435                 {
 436                         if (*a == Child)
 437                         {
 438                                 Children.erase(a);
 439                                 return true;
 440                         }
 441                 }
 442                 return false;
 443         }
 444
 445         /* Removes child nodes of this node, and of that node, etc etc.
 446          * This is used during netsplits to automatically tidy up the
 447          * server tree. It is slow, we don't use it for much else.
 448          */
 449         bool Tidy()
 450         {
 451                 bool stillchildren = true;
 452                 while (stillchildren)
 453                 {
 454                         stillchildren = false;
 455                         for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
 456                         {
 457                                 TreeServer* s = (TreeServer*)*a;
 458                                 s->Tidy();
 459                                 Children.erase(a);
 460                                 delete s;
 461                                 stillchildren = true;
 462                                 break;
 463                         }
 464                 }
 465                 return true;
 466         }
 467
 468         ~TreeServer()
 469         {
 470                 /* We'd better tidy up after ourselves, eh? */
 471                 this->DelHashEntry();
 472         }
 473 };
 474
 475 /* The Link class might as well be a struct,
 476  * but this is C++ and we don't believe in structs (!).
 477  * It holds the entire information of one <link>
 478  * tag from the main config file. We maintain a list
 479  * of them, and populate the list on rehash/load.
 480  */
 481
 482 class Link
 483 {
 484  public:
 485          irc::string Name;
 486          std::string IPAddr;
 487          int Port;
 488          std::string SendPass;
 489          std::string RecvPass;
 490          unsigned long AutoConnect;
 491          time_t NextConnectTime;
 492          std::string EncryptionKey;
 493          bool HiddenFromStats;
 494 };
 495
 496 /* The usual stuff for inspircd modules,
 497  * plus the vector of Link classes which we
 498  * use to store the <link> tags from the config
 499  * file.
 500  */
 501 ConfigReader *Conf;
 502 std::vector<Link> LinkBlocks;
 503
 504 /* Yay for fast searches!
 505  * This is hundreds of times faster than recursion
 506  * or even scanning a linked list, especially when
 507  * there are more than a few servers to deal with.
 508  * (read as: lots).
 509  */
 510 TreeServer* FindServer(std::string ServerName)
 511 {
 512         server_hash::iterator iter;
 513         iter = serverlist.find(ServerName.c_str());
 514         if (iter != serverlist.end())
 515         {
 516                 return iter->second;
 517         }
 518         else
 519         {
 520                 return NULL;
 521         }
 522 }
 523
 524 /* Returns the locally connected server we must route a
 525  * message through to reach server 'ServerName'. This
 526  * only applies to one-to-one and not one-to-many routing.
 527  * See the comments for the constructor of TreeServer
 528  * for more details.
 529  */
 530 TreeServer* BestRouteTo(std::string ServerName)
 531 {
 532         if (ServerName.c_str() == TreeRoot->GetName())
 533                 return NULL;
 534         TreeServer* Found = FindServer(ServerName);
 535         if (Found)
 536         {
 537                 return Found->GetRoute();
 538         }
 539         else
 540         {
 541                 return NULL;
 542         }
 543 }
 544
 545 /* Find the first server matching a given glob mask.
 546  * Theres no find-using-glob method of hash_map [awwww :-(]
 547  * so instead, we iterate over the list using an iterator
 548  * and match each one until we get a hit. Yes its slow,
 549  * deal with it.
 550  */
 551 TreeServer* FindServerMask(std::string ServerName)
 552 {
 553         for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
 554         {
 555                 if (Srv->MatchText(i->first.c_str(),ServerName))
 556                         return i->second;
 557         }
 558         return NULL;
 559 }
 560
 561 /* A convenient wrapper that returns true if a server exists */
 562 bool IsServer(std::string ServerName)
 563 {
 564         return (FindServer(ServerName) != NULL);
 565 }
 566
 567
 568 class cmd_rconnect : public command_t
 569 {
 570         Module* Creator;
 571  public:
 572         cmd_rconnect (Module* Callback) : command_t("RCONNECT", 'o', 2), Creator(Callback)
 573         {
 574                 this->source = "m_spanningtree.so";
 575         }
 576
 577         void Handle (char **parameters, int pcnt, userrec *user)
 578         {
 579                 WriteServ(user->fd,"NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]);
 580                 /* Is this aimed at our server? */
 581                 if (Srv->MatchText(Srv->GetServerName(),parameters[0]))
 582                 {
 583                         /* Yes, initiate the given connect */
 584                         WriteOpers("*** Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]);
 585                         char* para[1];
 586                         para[0] = parameters[1];
 587                         Creator->OnPreCommand("CONNECT", para, 1, user, true);
 588                 }
 589         }
 590 };
 591
 592
 593
 594 /* Every SERVER connection inbound or outbound is represented by
 595  * an object of type TreeSocket.
 596  * TreeSockets, being inherited from InspSocket, can be tied into
 597  * the core socket engine, and we cn therefore receive activity events
 598  * for them, just like activex objects on speed. (yes really, that
 599  * is a technical term!) Each of these which relates to a locally
 600  * connected server is assocated with it, by hooking it onto a
 601  * TreeSocket class using its constructor. In this way, we can
 602  * maintain a list of servers, some of which are directly connected,
 603  * some of which are not.
 604  */
 605
 606 class TreeSocket : public InspSocket
 607 {
 608         std::string myhost;
 609         std::string in_buffer;
 610         ServerState LinkState;
 611         std::string InboundServerName;
 612         std::string InboundDescription;
 613         int num_lost_users;
 614         int num_lost_servers;
 615         time_t NextPing;
 616         bool LastPingWasGood;
 617         bool bursting;
 618         AES* ctx_in;
 619         AES* ctx_out;
 620         unsigned int keylength;
 621
 622  public:
 623
 624         /* Because most of the I/O gubbins are encapsulated within
 625          * InspSocket, we just call the superclass constructor for
 626          * most of the action, and append a few of our own values
 627          * to it.
 628          */
 629         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
 630                 : InspSocket(host, port, listening, maxtime)
 631         {
 632                 myhost = host;
 633                 this->LinkState = LISTENER;
 634                 this->ctx_in = NULL;
 635                 this->ctx_out = NULL;
 636         }
 637
 638         TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
 639                 : InspSocket(host, port, listening, maxtime)
 640         {
 641                 myhost = ServerName;
 642                 this->LinkState = CONNECTING;
 643                 this->ctx_in = NULL;
 644                 this->ctx_out = NULL;
 645         }
 646
 647         /* When a listening socket gives us a new file descriptor,
 648          * we must associate it with a socket without creating a new
 649          * connection. This constructor is used for this purpose.
 650          */
 651         TreeSocket(int newfd, char* ip)
 652                 : InspSocket(newfd, ip)
 653         {
 654                 this->LinkState = WAIT_AUTH_1;
 655                 this->ctx_in = NULL;
 656                 this->ctx_out = NULL;
 657                 this->SendCapabilities();
 658         }
 659
 660         ~TreeSocket()
 661         {
 662                 if (ctx_in)
 663                         delete ctx_in;
 664                 if (ctx_out)
 665                         delete ctx_out;
 666         }
 667
 668         void InitAES(std::string key,std::string SName)
 669         {
 670                 if (key == "")
 671                         return;
 672
 673                 ctx_in = new AES();
 674                 ctx_out = new AES();
 675                 log(DEBUG,"Initialized AES key %s",key.c_str());
 676                 // key must be 16, 24, 32 etc bytes (multiple of 8)
 677                 keylength = key.length();
 678                 if (!(keylength == 16 || keylength == 24 || keylength == 32))
 679                 {
 680                         WriteOpers("*** \2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
 681                         log(DEBUG,"Key length not 16, 24 or 32 characters!");
 682                 }
 683                 else
 684                 {
 685                         WriteOpers("*** \2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
 686                         ctx_in->MakeKey(key.c_str(), "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
 687                                 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", keylength, keylength);
 688                         ctx_out->MakeKey(key.c_str(), "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
 689                                 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", keylength, keylength);
 690                 }
 691         }
 692
 693         /* When an outbound connection finishes connecting, we receive
 694          * this event, and must send our SERVER string to the other
 695          * side. If the other side is happy, as outlined in the server
 696          * to server docs on the inspircd.org site, the other side
 697          * will then send back its own server string.
 698          */
 699         virtual bool OnConnected()
 700         {
 701                 if (this->LinkState == CONNECTING)
 702                 {
 703                         /* we do not need to change state here. */
 704                         for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
 705                         {
 706                                 if (x->Name == this->myhost)
 707                                 {
 708                                         Srv->SendOpers("*** Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] established.");
 709                                         this->SendCapabilities();
 710                                         if (x->EncryptionKey != "")
 711                                         {
 712                                                 if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
 713                                                 {
 714                                                         WriteOpers("\2WARNING\2: Your encryption key is NOT 16, 24 or 32 characters in length, encryption will \2NOT\2 be enabled.");
 715                                                 }
 716                                                 else
 717                                                 {
 718                                                         this->WriteLine("AES "+Srv->GetServerName());
 719                                                         this->InitAES(x->EncryptionKey,x->Name.c_str());
 720                                                 }
 721                                         }
 722                                         /* found who we're supposed to be connecting to, send the neccessary gubbins. */
 723                                         this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
 724                                         return true;
 725                                 }
 726                         }
 727                 }
 728                 /* There is a (remote) chance that between the /CONNECT and the connection
 729                  * being accepted, some muppet has removed the <link> block and rehashed.
 730                  * If that happens the connection hangs here until it's closed. Unlikely
 731                  * and rather harmless.
 732                  */
 733                 Srv->SendOpers("*** Connection to \2"+myhost+"\2 lost link tag(!)");
 734                 return true;
 735         }
 736
 737         virtual void OnError(InspSocketError e)
 738         {
 739                 /* We don't handle this method, because all our
 740                  * dirty work is done in OnClose() (see below)
 741                  * which is still called on error conditions too.
 742                  */
 743         }
 744
 745         virtual int OnDisconnect()
 746         {
 747                 /* For the same reason as above, we don't
 748                  * handle OnDisconnect()
 749                  */
 750                 return true;
 751         }
 752
 753         /* Recursively send the server tree with distances as hops.
 754          * This is used during network burst to inform the other server
 755          * (and any of ITS servers too) of what servers we know about.
 756          * If at any point any of these servers already exist on the other
 757          * end, our connection may be terminated. The hopcounts given
 758          * by this function are relative, this doesn't matter so long as
 759          * they are all >1, as all the remote servers re-calculate them
 760          * to be relative too, with themselves as hop 0.
 761          */
 762         void SendServers(TreeServer* Current, TreeServer* s, int hops)
 763         {
 764                 char command[1024];
 765                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 766                 {
 767                         TreeServer* recursive_server = Current->GetChild(q);
 768                         if (recursive_server != s)
 769                         {
 770                                 snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
 771                                 this->WriteLine(command);
 772                                 this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
 773                                 /* down to next level */
 774                                 this->SendServers(recursive_server, s, hops+1);
 775                         }
 776                 }
 777         }
 778
 779         std::string MyCapabilities()
 780         {
 781                 ServerConfig* Config = Srv->GetConfig();
 782                 std::vector<std::string> modlist;
 783                 std::string capabilities = "";
 784
 785                 for (int i = 0; i <= MODCOUNT; i++)
 786                 {
 787                         if ((modules[i]->GetVersion().Flags & VF_STATIC) || (modules[i]->GetVersion().Flags & VF_COMMON))
 788                                 modlist.push_back(Config->module_names[i]);
 789                 }
 790                 sort(modlist.begin(),modlist.end());
 791                 for (unsigned int i = 0; i < modlist.size(); i++)
 792                 {
 793                         if (i)
 794                                 capabilities = capabilities + ",";
 795                         capabilities = capabilities + modlist[i];
 796                 }
 797                 return capabilities;
 798         }
 799
 800         void SendCapabilities()
 801         {
 802                 this->WriteLine("CAPAB "+MyCapabilities());
 803         }
 804
 805         bool Capab(std::deque<std::string> params)
 806         {
 807                 if (params.size() != 1)
 808                 {
 809                         this->WriteLine("ERROR :Invalid number of parameters for CAPAB");
 810                         return false;
 811                 }
 812
 813                 if (params[0] != this->MyCapabilities())
 814                 {
 815                         std::string quitserver = this->myhost;
 816                         if (this->InboundServerName != "")
 817                         {
 818                                 quitserver = this->InboundServerName;
 819                         }
 820
 821                         WriteOpers("*** \2ERROR\2: Server '%s' does not have the same set of modules loaded, cannot link!",quitserver.c_str());
 822                         WriteOpers("*** Our networked module set is: '%s'",this->MyCapabilities().c_str());
 823                         WriteOpers("*** Other server's networked module set is: '%s'",params[0].c_str());
 824                         WriteOpers("*** These lists must match exactly on both servers. Please correct these errors, and try again.");
 825                         this->WriteLine("ERROR :CAPAB mismatch; My capabilities: '"+this->MyCapabilities()+"'");
 826                         return false;
 827                 }
 828
 829                 return true;
 830         }
 831
 832         /* This function forces this server to quit, removing this server
 833          * and any users on it (and servers and users below that, etc etc).
 834          * It's very slow and pretty clunky, but luckily unless your network
 835          * is having a REAL bad hair day, this function shouldnt be called
 836          * too many times a month ;-)
 837          */
 838         void SquitServer(std::string &from, TreeServer* Current)
 839         {
 840                 /* recursively squit the servers attached to 'Current'.
 841                  * We're going backwards so we don't remove users
 842                  * while we still need them ;)
 843                  */
 844                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
 845                 {
 846                         TreeServer* recursive_server = Current->GetChild(q);
 847                         this->SquitServer(from,recursive_server);
 848                 }
 849                 /* Now we've whacked the kids, whack self */
 850                 num_lost_servers++;
 851                 num_lost_users += Current->QuitUsers(from);
 852                 /*for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 853                 {
 854                         if (!strcasecmp(u->second->server,Current->GetName().c_str()))
 855                         {
 856                                 Goners->AddItem(u->second,from);
 857                                 num_lost_users++;
 858                         }
 859                 }*/
 860         }
 861
 862         /* This is a wrapper function for SquitServer above, which
 863          * does some validation first and passes on the SQUIT to all
 864          * other remaining servers.
 865          */
 866         void Squit(TreeServer* Current,std::string reason)
 867         {
 868                 if ((Current) && (Current != TreeRoot))
 869                 {
 870                         std::deque<std::string> params;
 871                         params.push_back(Current->GetName());
 872                         params.push_back(":"+reason);
 873                         DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
 874                         if (Current->GetParent() == TreeRoot)
 875                         {
 876                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
 877                         }
 878                         else
 879                         {
 880                                 Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
 881                         }
 882                         num_lost_servers = 0;
 883                         num_lost_users = 0;
 884                         std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
 885                         SquitServer(from, Current);
 886                         Current->Tidy();
 887                         Current->GetParent()->DelChild(Current);
 888                         delete Current;
 889                         WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
 890                 }
 891                 else
 892                 {
 893                         log(DEFAULT,"Squit from unknown server");
 894                 }
 895         }
 896
 897         /* FMODE command */
 898         bool ForceMode(std::string source, std::deque<std::string> &params)
 899         {
 900                 if (params.size() < 2)
 901                         return true;
 902                 userrec* who = new userrec();
 903                 who->fd = FD_MAGIC_NUMBER;
 904                 char* modelist[64];
 905                 memset(&modelist,0,sizeof(modelist));
 906                 for (unsigned int q = 0; q < params.size(); q++)
 907                 {
 908                         modelist[q] = (char*)params[q].c_str();
 909                 }
 910                 Srv->SendMode(modelist,params.size(),who);
 911                 DoOneToAllButSender(source,"FMODE",params,source);
 912                 delete who;
 913                 return true;
 914         }
 915
 916         /* FTOPIC command */
 917         bool ForceTopic(std::string source, std::deque<std::string> &params)
 918         {
 919                 if (params.size() != 4)
 920                         return true;
 921                 time_t ts = atoi(params[1].c_str());
 922                 std::string nsource = source;
 923
 924                 chanrec* c = Srv->FindChannel(params[0]);
 925                 if (c)
 926                 {
 927                         if ((ts >= c->topicset) || (!*c->topic))
 928                         {
 929                                 std::string oldtopic = c->topic;
 930                                 strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
 931                                 strlcpy(c->setby,params[2].c_str(),NICKMAX-1);
 932                                 c->topicset = ts;
 933                                 /* if the topic text is the same as the current topic,
 934                                  * dont bother to send the TOPIC command out, just silently
 935                                  * update the set time and set nick.
 936                                  */
 937                                 if (oldtopic != params[3])
 938                                 {
 939                                         userrec* user = Srv->FindNick(source);
 940                                         if (!user)
 941                                         {
 942                                                 WriteChannelWithServ((char*)source.c_str(), c, "TOPIC %s :%s", c->name, c->topic);
 943                                         }
 944                                         else
 945                                         {
 946                                                 WriteChannel(c, user, "TOPIC %s :%s", c->name, c->topic);
 947                                                 nsource = user->server;
 948                                         }
 949                                         /* all done, send it on its way */
 950                                         params[3] = ":" + params[3];
 951                                         DoOneToAllButSender(source,"FTOPIC",params,nsource);
 952                                 }
 953                         }
 954
 955                 }
 956
 957                 return true;
 958         }
 959
 960         /* FJOIN, similar to unreal SJOIN */
 961         bool ForceJoin(std::string source, std::deque<std::string> &params)
 962         {
 963                 if (params.size() < 3)
 964                         return true;
 965
 966                 char first[MAXBUF];
 967                 char modestring[MAXBUF];
 968                 char* mode_users[127];
 969                 memset(&mode_users,0,sizeof(mode_users));
 970                 mode_users[0] = first;
 971                 mode_users[1] = modestring;
 972                 strcpy(mode_users[1],"+");
 973                 unsigned int modectr = 2;
 974
 975                 userrec* who = NULL;
 976                 std::string channel = params[0];
 977                 time_t TS = atoi(params[1].c_str());
 978                 char* key = "";
 979
 980                 chanrec* chan = Srv->FindChannel(channel);
 981                 if (chan)
 982                 {
 983                         key = chan->key;
 984                 }
 985                 strlcpy(mode_users[0],channel.c_str(),MAXBUF);
 986
 987                 /* default is a high value, which if we dont have this
 988                  * channel will let the other side apply their modes.
 989                  */
 990                 time_t ourTS = time(NULL)+600;
 991                 chanrec* us = Srv->FindChannel(channel);
 992                 if (us)
 993                 {
 994                         ourTS = us->age;
 995                 }
 996
 997                 log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
 998
 999                 /* do this first, so our mode reversals are correctly received by other servers
1000                  * if there is a TS collision.
1001                  */
1002                 DoOneToAllButSender(source,"FJOIN",params,source);
1003
1004                 for (unsigned int usernum = 2; usernum < params.size(); usernum++)
1005                 {
1006                         /* process one channel at a time, applying modes. */
1007                         char* usr = (char*)params[usernum].c_str();
1008                         /* Safety check just to make sure someones not sent us an FJOIN full of spaces
1009                          * (is this even possible?) */
1010                         if (usr && *usr)
1011                         {
1012                                 char permissions = *usr;
1013                                 switch (permissions)
1014                                 {
1015                                         case '@':
1016                                                 usr++;
1017                                                 mode_users[modectr++] = usr;
1018                                                 strlcat(modestring,"o",MAXBUF);
1019                                         break;
1020                                         case '%':
1021                                                 usr++;
1022                                                 mode_users[modectr++] = usr;
1023                                                 strlcat(modestring,"h",MAXBUF);
1024                                         break;
1025                                         case '+':
1026                                                 usr++;
1027                                                 mode_users[modectr++] = usr;
1028                                                 strlcat(modestring,"v",MAXBUF);
1029                                         break;
1030                                 }
1031                                 who = Srv->FindNick(usr);
1032                                 if (who)
1033                                 {
1034                                         Srv->JoinUserToChannel(who,channel,key);
1035                                         if (modectr >= (MAXMODES-1))
1036                                         {
1037                                                 /* theres a mode for this user. push them onto the mode queue, and flush it
1038                                                  * if there are more than MAXMODES to go.
1039                                                  */
1040                                                 if ((ourTS >= TS) || (Srv->IsUlined(who->server)))
1041                                                 {
1042                                                         /* We also always let u-lined clients win, no matter what the TS value */
1043                                                         log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1044                                                         Srv->SendMode(mode_users,modectr,who);
1045                                                 }
1046                                                 else
1047                                                 {
1048                                                         log(DEBUG,"Their channel newer than ours, bouncing their modes");
1049                                                         /* bouncy bouncy! */
1050                                                         std::deque<std::string> params;
1051                                                         /* modes are now being UNSET... */
1052                                                         *mode_users[1] = '-';
1053                                                         for (unsigned int x = 0; x < modectr; x++)
1054                                                         {
1055                                                                 params.push_back(mode_users[x]);
1056                                                         }
1057                                                         // tell everyone to bounce the modes. bad modes, bad!
1058                                                         DoOneToMany(Srv->GetServerName(),"FMODE",params);
1059                                                 }
1060                                                 strcpy(mode_users[1],"+");
1061                                                 modectr = 2;
1062                                         }
1063                                 }
1064                         }
1065                 }
1066                 /* there werent enough modes built up to flush it during FJOIN,
1067                  * or, there are a number left over. flush them out.
1068                  */
1069                 if ((modectr > 2) && (who))
1070                 {
1071                         if (ourTS >= TS)
1072                         {
1073                                 log(DEBUG,"Our our channel newer than theirs, accepting their modes");
1074                                 Srv->SendMode(mode_users,modectr,who);
1075                         }
1076                         else
1077                         {
1078                                 log(DEBUG,"Their channel newer than ours, bouncing their modes");
1079                                 std::deque<std::string> params;
1080                                 *mode_users[1] = '-';
1081                                 for (unsigned int x = 0; x < modectr; x++)
1082                                 {
1083                                         params.push_back(mode_users[x]);
1084                                 }
1085                                 DoOneToMany(Srv->GetServerName(),"FMODE",params);
1086                         }
1087                 }
1088                 return true;
1089         }
1090
1091         /* NICK command */
1092         bool IntroduceClient(std::string source, std::deque<std::string> &params)
1093         {
1094                 if (params.size() < 8)
1095                         return true;
1096                 if (params.size() > 8)
1097                 {
1098                         this->WriteLine(":"+Srv->GetServerName()+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
1099                         return true;
1100                 }
1101                 // NICK age nick host dhost ident +modes ip :gecos
1102                 //   0   123  4 56   7
1103                 time_t age = atoi(params[0].c_str());
1104                 std::string modes = params[5];
1105                 while (*(modes.c_str()) == '+')
1106                 {
1107                         char* m = (char*)modes.c_str();
1108                         m++;
1109                         modes = m;
1110                 }
1111                 char* tempnick = (char*)params[1].c_str();
1112                 log(DEBUG,"Introduce client %s!%s@%s",tempnick,params[4].c_str(),params[2].c_str());
1113
1114                 user_hash::iterator iter;
1115                 iter = clientlist.find(tempnick);
1116                 if (iter != clientlist.end())
1117                 {
1118                         // nick collision
1119                         log(DEBUG,"Nick collision on %s!%s@%s: %lu %lu",tempnick,params[4].c_str(),params[2].c_str(),(unsigned long)age,(unsigned long)iter->second->age);
1120                         this->WriteLine(":"+Srv->GetServerName()+" KILL "+tempnick+" :Nickname collision");
1121                         return true;
1122                 }
1123
1124                 clientlist[tempnick] = new userrec();
1125                 clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
1126                 strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX-1);
1127                 strlcpy(clientlist[tempnick]->host, params[2].c_str(),63);
1128                 strlcpy(clientlist[tempnick]->dhost, params[3].c_str(),63);
1129                 clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
1130                 strlcpy(clientlist[tempnick]->ident, params[4].c_str(),IDENTMAX);
1131                 strlcpy(clientlist[tempnick]->fullname, params[7].c_str(),MAXGECOS);
1132                 clientlist[tempnick]->registered = 7;
1133                 clientlist[tempnick]->signon = age;
1134                 strlcpy(clientlist[tempnick]->modes, modes.c_str(),53);
1135                 for (char *v = clientlist[tempnick]->modes; *v; v++)
1136                 {
1137                         switch (*v)
1138                         {
1139                                 case 'i':
1140                                         clientlist[tempnick]->modebits |= UM_INVISIBLE;
1141                                 break;
1142                                 case 'w':
1143                                         clientlist[tempnick]->modebits |= UM_WALLOPS;
1144                                 break;
1145                                 case 's':
1146                                         clientlist[tempnick]->modebits |= UM_SERVERNOTICE;
1147                                 break;
1148                                 default:
1149                                 break;
1150                         }
1151                 }
1152                 inet_aton(params[6].c_str(),&clientlist[tempnick]->ip4);
1153
1154                 WriteOpers("*** Client connecting at %s: %s!%s@%s [%s]",clientlist[tempnick]->server,clientlist[tempnick]->nick,clientlist[tempnick]->ident,clientlist[tempnick]->host,(char*)inet_ntoa(clientlist[tempnick]->ip4));
1155
1156                 params[7] = ":" + params[7];
1157                 DoOneToAllButSender(source,"NICK",params,source);
1158
1159                 // Increment the Source Servers User Count..
1160                 TreeServer* SourceServer = FindServer(source);
1161                 if (SourceServer)
1162                 {
1163                         SourceServer->AddUser(clientlist[tempnick]);
1164                         SourceServer->AddUserCount();
1165                 }
1166
1167                 return true;
1168         }
1169
1170         /* Send one or more FJOINs for a channel of users.
1171          * If the length of a single line is more than 480-NICKMAX
1172          * in length, it is split over multiple lines.
1173          */
1174         void SendFJoins(TreeServer* Current, chanrec* c)
1175         {
1176                 log(DEBUG,"Sending FJOINs to other server for %s",c->name);
1177                 char list[MAXBUF];
1178                 std::string individual_halfops = ":"+Srv->GetServerName()+" FMODE "+c->name;
1179
1180                 size_t dlen, curlen;
1181                 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
1182                 int numusers = 0;
1183                 char* ptr = list + dlen;
1184
1185                 CUList *ulist = c->GetUsers();
1186                 std::vector<userrec*> specific_halfop;
1187                 std::vector<userrec*> specific_voice;
1188
1189                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1190                 {
1191                         int x = cflags(i->second,c);
1192                         if ((x & UCMODE_HOP) && (x & UCMODE_OP))
1193                         {
1194                                 specific_halfop.push_back(i->second);
1195                         }
1196                         if (((x & UCMODE_HOP) || (x & UCMODE_OP)) && (x & UCMODE_VOICE))
1197                         {
1198                                 specific_voice.push_back(i->second);
1199                         }
1200
1201                         const char* n = "";
1202                         if (x & UCMODE_OP)
1203                         {
1204                                 n = "@";
1205                         }
1206                         else if (x & UCMODE_HOP)
1207                         {
1208                                 n = "%";
1209                         }
1210                         else if (x & UCMODE_VOICE)
1211                         {
1212                                 n = "+";
1213                         }
1214
1215                         size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s", n, i->second->nick);
1216
1217                         curlen += ptrlen;
1218                         ptr += ptrlen;
1219
1220                         numusers++;
1221
1222                         if (curlen > (480-NICKMAX))
1223                         {
1224                                 this->WriteLine(list);
1225                                 dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
1226                                 ptr = list + dlen;
1227                                 ptrlen = 0;
1228                                 numusers = 0;
1229                                 for (unsigned int y = 0; y < specific_voice.size(); y++)
1230                                 {
1231                                         this->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" +v "+specific_voice[y]->nick);
1232                                 }
1233                                 for (unsigned int y = 0; y < specific_halfop.size(); y++)
1234                                 {
1235                                         this->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" +h "+specific_halfop[y]->nick);
1236                                 }
1237                         }
1238                 }
1239                 if (numusers)
1240                 {
1241                         this->WriteLine(list);
1242                         for (unsigned int y = 0; y < specific_voice.size(); y++)
1243                         {
1244                                 this->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" +v "+specific_voice[y]->nick);
1245                         }
1246                         for (unsigned int y = 0; y < specific_halfop.size(); y++)
1247                         {
1248                                 this->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" +h "+specific_halfop[y]->nick);
1249                         }
1250                 }
1251         }
1252
1253         /* Send G, Q, Z and E lines */
1254         void SendXLines(TreeServer* Current)
1255         {
1256                 char data[MAXBUF];
1257                 std::string n = Srv->GetServerName();
1258                 const char* sn = n.c_str();
1259                 int iterations = 0;
1260                 /* Yes, these arent too nice looking, but they get the job done */
1261                 for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++, iterations++)
1262                 {
1263                         snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",sn,i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1264                         this->WriteLine(data);
1265                 }
1266                 for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++, iterations++)
1267                 {
1268                         snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",sn,i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1269                         this->WriteLine(data);
1270                 }
1271                 for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++, iterations++)
1272                 {
1273                         snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1274                         this->WriteLine(data);
1275                 }
1276                 for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++, iterations++)
1277                 {
1278                         snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1279                         this->WriteLine(data);
1280                 }
1281                 for (std::vector<ZLine>::iterator i = pzlines.begin(); i != pzlines.end(); i++, iterations++)
1282                 {
1283                         snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",sn,i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1284                         this->WriteLine(data);
1285                 }
1286                 for (std::vector<QLine>::iterator i = pqlines.begin(); i != pqlines.end(); i++, iterations++)
1287                 {
1288                         snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",sn,i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1289                         this->WriteLine(data);
1290                 }
1291                 for (std::vector<GLine>::iterator i = pglines.begin(); i != pglines.end(); i++, iterations++)
1292                 {
1293                         snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1294                         this->WriteLine(data);
1295                 }
1296                 for (std::vector<ELine>::iterator i = pelines.begin(); i != pelines.end(); i++, iterations++)
1297                 {
1298                         snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
1299                         this->WriteLine(data);
1300                 }
1301         }
1302
1303         /* Send channel modes and topics */
1304         void SendChannelModes(TreeServer* Current)
1305         {
1306                 char data[MAXBUF];
1307                 std::deque<std::string> list;
1308                 int iterations = 0;
1309                 std::string n = Srv->GetServerName();
1310                 const char* sn = n.c_str();
1311                 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++, iterations++)
1312                 {
1313                         SendFJoins(Current, c->second);
1314                         snprintf(data,MAXBUF,":%s FMODE %s +%s",sn,c->second->name,chanmodes(c->second,true));
1315                         this->WriteLine(data);
1316                         if (*c->second->topic)
1317                         {
1318                                 snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
1319                                 this->WriteLine(data);
1320                         }
1321                         for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
1322                         {
1323                                 snprintf(data,MAXBUF,":%s FMODE %s +b %s",sn,c->second->name,b->data);
1324                                 this->WriteLine(data);
1325                         }
1326                         FOREACH_MOD(I_OnSyncChannel,OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this));
1327                         list.clear();
1328                         c->second->GetExtList(list);
1329                         for (unsigned int j = 0; j < list.size(); j++)
1330                         {
1331                                 FOREACH_MOD(I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1332                         }
1333                 }
1334         }
1335
1336         /* send all users and their oper state/modes */
1337         void SendUsers(TreeServer* Current)
1338         {
1339                 char data[MAXBUF];
1340                 std::deque<std::string> list;
1341                 int iterations = 0;
1342                 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++, iterations++)
1343                 {
1344                         if (u->second->registered == 7)
1345                         {
1346                                 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,(char*)inet_ntoa(u->second->ip4),u->second->fullname);
1347                                 this->WriteLine(data);
1348                                 if (*u->second->oper)
1349                                 {
1350                                         this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
1351                                 }
1352                                 if (*u->second->awaymsg)
1353                                 {
1354                                         this->WriteLine(":"+std::string(u->second->nick)+" AWAY :"+std::string(u->second->awaymsg));
1355                                 }
1356                                 FOREACH_MOD(I_OnSyncUser,OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this));
1357                                 list.clear();
1358                                 u->second->GetExtList(list);
1359                                 for (unsigned int j = 0; j < list.size(); j++)
1360                                 {
1361                                         FOREACH_MOD(I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
1362                                 }
1363                         }
1364                 }
1365         }
1366
1367         /* This function is called when we want to send a netburst to a local
1368          * server. There is a set order we must do this, because for example
1369          * users require their servers to exist, and channels require their
1370          * users to exist. You get the idea.
1371          */
1372         void DoBurst(TreeServer* s)
1373         {
1374                 /* The calls here to ServerInstance-> yield the processing
1375                  * back to the core so that a large burst is split into at least 6 sections
1376                  * (possibly more)
1377                  */
1378                 std::string burst = "BURST "+ConvToStr(time(NULL));
1379                 std::string endburst = "ENDBURST";
1380                 // Because by the end of the netburst, it  could be gone!
1381                 std::string name = s->GetName();
1382                 Srv->SendOpers("*** Bursting to \2"+name+"\2.");
1383                 this->WriteLine(burst);
1384                 /* send our version string */
1385                 this->WriteLine(":"+Srv->GetServerName()+" VERSION :"+Srv->GetVersion());
1386                 /* Send server tree */
1387                 this->SendServers(TreeRoot,s,1);
1388                 /* Send users and their oper status */
1389                 this->SendUsers(s);
1390                 /* Send everything else (channel modes, xlines etc) */
1391                 this->SendChannelModes(s);
1392                 this->SendXLines(s);
1393                 FOREACH_MOD(I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)TreeProtocolModule,(void*)this));
1394                 this->WriteLine(endburst);
1395                 Srv->SendOpers("*** Finished bursting to \2"+name+"\2.");
1396         }
1397
1398         /* This function is called when we receive data from a remote
1399          * server. We buffer the data in a std::string (it doesnt stay
1400          * there for long), reading using InspSocket::Read() which can
1401          * read up to 16 kilobytes in one operation.
1402          *
1403          * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
1404          * THE SOCKET OBJECT FOR US.
1405          */
1406         virtual bool OnDataReady()
1407         {
1408                 int iterations = 0;
1409                 char* data = this->Read();
1410                 /* Check that the data read is a valid pointer and it has some content */
1411                 if (data && *data)
1412                 {
1413                         this->in_buffer.append(data);
1414                         /* While there is at least one new line in the buffer,
1415                          * do something useful (we hope!) with it.
1416                          */
1417                         while (in_buffer.find("\n") != std::string::npos)
1418                         {
1419                                 std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
1420                                 in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
1421                                 if (ret.find("\r") != std::string::npos)
1422                                         ret = in_buffer.substr(0,in_buffer.find("\r")-1);
1423                                 /* Process this one, abort if it
1424                                  * didnt return true.
1425                                  */
1426                                 if (this->ctx_in)
1427                                 {
1428                                         char out[1024];
1429                                         char result[1024];
1430                                         memset(result,0,1024);
1431                                         memset(out,0,1024);
1432                                         log(DEBUG,"Original string '%s'",ret.c_str());
1433                                         /* ERROR + CAPAB is still allowed unencryped */
1434                                         if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
1435                                         {
1436                                                 int nbytes = from64tobits(out, ret.c_str(), 1024);
1437                                                 if ((nbytes > 0) && (nbytes < 1024))
1438                                                 {
1439                                                         log(DEBUG,"m_spanningtree: decrypt %d bytes",nbytes);
1440                                                         ctx_in->Decrypt(out, result, nbytes, 0);
1441                                                         for (int t = 0; t < nbytes; t++)
1442                                                                 if (result[t] == '\7') result[t] = 0;
1443                                                         ret = result;
1444                                                 }
1445                                         }
1446                                 }
1447                                 if (!this->ProcessLine(ret))
1448                                 {
1449                                         log(DEBUG,"ProcessLine says no!");
1450                                         return false;
1451                                 }
1452                         }
1453                         return true;
1454                 }
1455                 /* EAGAIN returns an empty but non-NULL string, so this
1456                  * evaluates to TRUE for EAGAIN but to FALSE for EOF.
1457                  */
1458                 return (data && !*data);
1459         }
1460
1461         int WriteLine(std::string line)
1462         {
1463                 log(DEBUG,"OUT: %s",line.c_str());
1464                 if (this->ctx_out)
1465                 {
1466                         char result[10240];
1467                         char result64[10240];
1468                         if (this->keylength)
1469                         {
1470                                 // pad it to the key length
1471                                 int n = this->keylength - (line.length() % this->keylength);
1472                                 if (n)
1473                                 {
1474                                         log(DEBUG,"Append %d chars to line to make it %d long from %d, key length %d",n,n+line.length(),line.length(),this->keylength);
1475                                         line.append(n,'\7');
1476                                 }
1477                         }
1478                         unsigned int ll = line.length();
1479                         ctx_out->Encrypt(line.c_str(), result, ll, 0);
1480                         to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
1481                         line = result64;
1482                         //int from64tobits(char *out, const char *in, int maxlen);
1483                 }
1484                 return this->Write(line + "\r\n");
1485         }
1486
1487         /* Handle ERROR command */
1488         bool Error(std::deque<std::string> &params)
1489         {
1490                 if (params.size() < 1)
1491                         return false;
1492                 WriteOpers("*** ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
1493                 /* we will return false to cause the socket to close. */
1494                 return false;
1495         }
1496
1497         /* Because the core won't let users or even SERVERS set +o,
1498          * we use the OPERTYPE command to do this.
1499          */
1500         bool OperType(std::string prefix, std::deque<std::string> &params)
1501         {
1502                 if (params.size() != 1)
1503                 {
1504                         log(DEBUG,"Received invalid oper type from %s",prefix.c_str());
1505                         return true;
1506                 }
1507                 std::string opertype = params[0];
1508                 userrec* u = Srv->FindNick(prefix);
1509                 if (u)
1510                 {
1511                         strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
1512                         if (!strchr(u->modes,'o'))
1513                         {
1514                                 strcat(u->modes,"o");
1515                         }
1516                         DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
1517                 }
1518                 return true;
1519         }
1520
1521         /* Because Andy insists that services-compatible servers must
1522          * implement SVSNICK and SVSJOIN, that's exactly what we do :p
1523          */
1524         bool ForceNick(std::string prefix, std::deque<std::string> &params)
1525         {
1526                 if (params.size() < 3)
1527                         return true;
1528
1529                 userrec* u = Srv->FindNick(params[0]);
1530
1531                 if (u)
1532                 {
1533                         DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
1534                         if (IS_LOCAL(u))
1535                         {
1536                                 std::deque<std::string> par;
1537                                 par.push_back(params[1]);
1538                                 DoOneToMany(u->nick,"NICK",par);
1539                                 Srv->ChangeUserNick(u,params[1]);
1540                                 u->age = atoi(params[2].c_str());
1541                         }
1542                 }
1543                 return true;
1544         }
1545
1546         bool ServiceJoin(std::string prefix, std::deque<std::string> &params)
1547         {
1548                 if (params.size() < 2)
1549                         return true;
1550
1551                 userrec* u = Srv->FindNick(params[0]);
1552
1553                 if (u)
1554                 {
1555                         Srv->JoinUserToChannel(u,params[1],"");
1556                         DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
1557                 }
1558                 return true;
1559         }
1560
1561         bool RemoteRehash(std::string prefix, std::deque<std::string> &params)
1562         {
1563                 if (params.size() < 1)
1564                         return false;
1565
1566                 std::string servermask = params[0];
1567
1568                 if (Srv->MatchText(Srv->GetServerName(),servermask))
1569                 {
1570                         Srv->SendOpers("*** Remote rehash initiated from server \002"+prefix+"\002.");
1571                         Srv->RehashServer();
1572                         ReadConfiguration(false);
1573                 }
1574                 DoOneToAllButSender(prefix,"REHASH",params,prefix);
1575                 return true;
1576         }
1577
1578         bool RemoteKill(std::string prefix, std::deque<std::string> &params)
1579         {
1580                 if (params.size() != 2)
1581                         return true;
1582
1583                 std::string nick = params[0];
1584                 userrec* u = Srv->FindNick(prefix);
1585                 userrec* who = Srv->FindNick(nick);
1586
1587                 if (who)
1588                 {
1589                         /* Prepend kill source, if we don't have one */
1590                         std::string sourceserv = prefix;
1591                         if (u)
1592                         {
1593                                 sourceserv = u->server;
1594                         }
1595                         if (*(params[1].c_str()) != '[')
1596                         {
1597                                 params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
1598                         }
1599                         std::string reason = params[1];
1600                         params[1] = ":" + params[1];
1601                         DoOneToAllButSender(prefix,"KILL",params,sourceserv);
1602                         Srv->QuitUser(who,reason);
1603                 }
1604                 return true;
1605         }
1606
1607         bool LocalPong(std::string prefix, std::deque<std::string> &params)
1608         {
1609                 if (params.size() < 1)
1610                         return true;
1611
1612                 if (params.size() == 1)
1613                 {
1614                         TreeServer* ServerSource = FindServer(prefix);
1615                         if (ServerSource)
1616                         {
1617                                 ServerSource->SetPingFlag();
1618                         }
1619                 }
1620                 else
1621                 {
1622                         std::string forwardto = params[1];
1623                         if (forwardto == Srv->GetServerName())
1624                         {
1625                                 /*
1626                                  * this is a PONG for us
1627                                  * if the prefix is a user, check theyre local, and if they are,
1628                                  * dump the PONG reply back to their fd. If its a server, do nowt.
1629                                  * Services might want to send these s->s, but we dont need to yet.
1630                                  */
1631                                 userrec* u = Srv->FindNick(prefix);
1632
1633                                 if (u)
1634                                 {
1635                                         WriteServ(u->fd,"PONG %s %s",params[0].c_str(),params[1].c_str());
1636                                 }
1637                         }
1638                         else
1639                         {
1640                                 // not for us, pass it on :)
1641                                 DoOneToOne(prefix,"PONG",params,forwardto);
1642                         }
1643                 }
1644
1645                 return true;
1646         }
1647
1648         bool MetaData(std::string prefix, std::deque<std::string> &params)
1649         {
1650                 if (params.size() < 3)
1651                         return true;
1652
1653                 TreeServer* ServerSource = FindServer(prefix);
1654
1655                 if (ServerSource)
1656                 {
1657                         if (params[0] == "*")
1658                         {
1659                                 FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
1660                         }
1661                         else if (*(params[0].c_str()) == '#')
1662                         {
1663                                 chanrec* c = Srv->FindChannel(params[0]);
1664                                 if (c)
1665                                 {
1666                                         FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
1667                                 }
1668                         }
1669                         else if (*(params[0].c_str()) != '#')
1670                         {
1671                                 userrec* u = Srv->FindNick(params[0]);
1672                                 if (u)
1673                                 {
1674                                         FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
1675                                 }
1676                         }
1677                 }
1678
1679                 params[2] = ":" + params[2];
1680                 DoOneToAllButSender(prefix,"METADATA",params,prefix);
1681                 return true;
1682         }
1683
1684         bool ServerVersion(std::string prefix, std::deque<std::string> &params)
1685         {
1686                 if (params.size() < 1)
1687                         return true;
1688
1689                 TreeServer* ServerSource = FindServer(prefix);
1690
1691                 if (ServerSource)
1692                 {
1693                         ServerSource->SetVersion(params[0]);
1694                 }
1695                 params[0] = ":" + params[0];
1696                 DoOneToAllButSender(prefix,"VERSION",params,prefix);
1697                 return true;
1698         }
1699
1700         bool ChangeHost(std::string prefix, std::deque<std::string> &params)
1701         {
1702                 if (params.size() < 1)
1703                         return true;
1704
1705                 userrec* u = Srv->FindNick(prefix);
1706
1707                 if (u)
1708                 {
1709                         Srv->ChangeHost(u,params[0]);
1710                         DoOneToAllButSender(prefix,"FHOST",params,u->server);
1711                 }
1712                 return true;
1713         }
1714
1715         bool AddLine(std::string prefix, std::deque<std::string> &params)
1716         {
1717                 if (params.size() < 6)
1718                         return true;
1719
1720                 bool propogate = false;
1721
1722                 switch (*(params[0].c_str()))
1723                 {
1724                         case 'Z':
1725                                 propogate = add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
1726                                 zline_set_creation_time((char*)params[1].c_str(), atoi(params[3].c_str()));
1727                         break;
1728                         case 'Q':
1729                                 propogate = add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
1730                                 qline_set_creation_time((char*)params[1].c_str(), atoi(params[3].c_str()));
1731                         break;
1732                         case 'E':
1733                                 propogate = add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
1734                                 eline_set_creation_time((char*)params[1].c_str(), atoi(params[3].c_str()));
1735                         break;
1736                         case 'G':
1737                                 propogate = add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
1738                                 gline_set_creation_time((char*)params[1].c_str(), atoi(params[3].c_str()));
1739                         break;
1740                         case 'K':
1741                                 propogate = add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
1742                         break;
1743                         default:
1744                                 /* Just in case... */
1745                                 Srv->SendOpers("*** \2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
1746                                 propogate = false;
1747                         break;
1748                 }
1749
1750                 /* Send it on its way */
1751                 if (propogate)
1752                 {
1753                         if (atoi(params[4].c_str()))
1754                         {
1755                                 WriteOpers("*** %s Added %cLINE on %s to expire in %lu seconds (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),atoi(params[4].c_str()),params[5].c_str());
1756                         }
1757                         else
1758                         {
1759                                 WriteOpers("*** %s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str());
1760                         }
1761                         params[5] = ":" + params[5];
1762                         DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
1763                 }
1764                 if (!this->bursting)
1765                 {
1766                         log(DEBUG,"Applying lines...");
1767                         apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
1768                 }
1769                 return true;
1770         }
1771
1772         bool ChangeName(std::string prefix, std::deque<std::string> &params)
1773         {
1774                 if (params.size() < 1)
1775                         return true;
1776
1777                 userrec* u = Srv->FindNick(prefix);
1778
1779                 if (u)
1780                 {
1781                         Srv->ChangeGECOS(u,params[0]);
1782                         params[0] = ":" + params[0];
1783                         DoOneToAllButSender(prefix,"FNAME",params,u->server);
1784                 }
1785                 return true;
1786         }
1787
1788         bool Whois(std::string prefix, std::deque<std::string> &params)
1789         {
1790                 if (params.size() < 1)
1791                         return true;
1792
1793                 log(DEBUG,"In IDLE command");
1794                 userrec* u = Srv->FindNick(prefix);
1795
1796                 if (u)
1797                 {
1798                         log(DEBUG,"USER EXISTS: %s",u->nick);
1799                         // an incoming request
1800                         if (params.size() == 1)
1801                         {
1802                                 userrec* x = Srv->FindNick(params[0]);
1803                                 if ((x) && (x->fd > -1))
1804                                 {
1805                                         userrec* x = Srv->FindNick(params[0]);
1806                                         log(DEBUG,"Got IDLE");
1807                                         char signon[MAXBUF];
1808                                         char idle[MAXBUF];
1809                                         log(DEBUG,"Sending back IDLE 3");
1810                                         snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
1811                                         snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
1812                                         std::deque<std::string> par;
1813                                         par.push_back(prefix);
1814                                         par.push_back(signon);
1815                                         par.push_back(idle);
1816                                         // ours, we're done, pass it BACK
1817                                         DoOneToOne(params[0],"IDLE",par,u->server);
1818                                 }
1819                                 else
1820                                 {
1821                                         // not ours pass it on
1822                                         DoOneToOne(prefix,"IDLE",params,x->server);
1823                                 }
1824                         }
1825                         else if (params.size() == 3)
1826                         {
1827                                 std::string who_did_the_whois = params[0];
1828                                 userrec* who_to_send_to = Srv->FindNick(who_did_the_whois);
1829                                 if ((who_to_send_to) && (who_to_send_to->fd > -1))
1830                                 {
1831                                         log(DEBUG,"Got final IDLE");
1832                                         // an incoming reply to a whois we sent out
1833                                         std::string nick_whoised = prefix;
1834                                         unsigned long signon = atoi(params[1].c_str());
1835                                         unsigned long idle = atoi(params[2].c_str());
1836                                         if ((who_to_send_to) && (who_to_send_to->fd > -1))
1837                                                 do_whois(who_to_send_to,u,signon,idle,(char*)nick_whoised.c_str());
1838                                 }
1839                                 else
1840                                 {
1841                                         // not ours, pass it on
1842                                         DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
1843                                 }
1844                         }
1845                 }
1846                 return true;
1847         }
1848
1849         bool Push(std::string prefix, std::deque<std::string> &params)
1850         {
1851                 if (params.size() < 2)
1852                         return true;
1853
1854                 userrec* u = Srv->FindNick(params[0]);
1855
1856                 if (IS_LOCAL(u))
1857                 {
1858                         // push the raw to the user
1859                         if (Srv->IsUlined(prefix))
1860                         {
1861                                 ::Write(u->fd,"%s",params[1].c_str());
1862                         }
1863                         else
1864                         {
1865                                 log(DEBUG,"PUSH from non-ulined server dropped into the bit-bucket:  :%s PUSH %s :%s",prefix.c_str(),params[0].c_str(),params[1].c_str());
1866                         }
1867                 }
1868                 else
1869                 {
1870                         // continue the raw onwards
1871                         params[1] = ":" + params[1];
1872                         DoOneToOne(prefix,"PUSH",params,u->server);
1873                 }
1874                 return true;
1875         }
1876
1877         bool Time(std::string prefix, std::deque<std::string> &params)
1878         {
1879                 // :source.server TIME remote.server sendernick
1880                 // :remote.server TIME source.server sendernick TS
1881                 if (params.size() == 2)
1882                 {
1883                         // someone querying our time?
1884                         if (Srv->GetServerName() == params[0])
1885                         {
1886                                 userrec* u = Srv->FindNick(params[1]);
1887                                 if (u)
1888                                 {
1889                                         char curtime[256];
1890                                         snprintf(curtime,256,"%lu",(unsigned long)time(NULL));
1891                                         params.push_back(curtime);
1892                                         params[0] = prefix;
1893                                         DoOneToOne(Srv->GetServerName(),"TIME",params,params[0]);
1894                                 }
1895                         }
1896                         else
1897                         {
1898                                 // not us, pass it on
1899                                 userrec* u = Srv->FindNick(params[1]);
1900                                 if (u)
1901                                         DoOneToOne(prefix,"TIME",params,params[0]);
1902                         }
1903                 }
1904                 else if (params.size() == 3)
1905                 {
1906                         // a response to a previous TIME
1907                         userrec* u = Srv->FindNick(params[1]);
1908                         if ((u) && (IS_LOCAL(u)))
1909                         {
1910                         time_t rawtime = atol(params[2].c_str());
1911                         struct tm * timeinfo;
1912                         timeinfo = localtime(&rawtime);
1913                                 char tms[26];
1914                                 snprintf(tms,26,"%s",asctime(timeinfo));
1915                                 tms[24] = 0;
1916                         WriteServ(u->fd,"391 %s %s :%s",u->nick,prefix.c_str(),tms);
1917                         }
1918                         else
1919                         {
1920                                 if (u)
1921                                         DoOneToOne(prefix,"TIME",params,u->server);
1922                         }
1923                 }
1924                 return true;
1925         }
1926
1927         bool LocalPing(std::string prefix, std::deque<std::string> &params)
1928         {
1929                 if (params.size() < 1)
1930                         return true;
1931
1932                 if (params.size() == 1)
1933                 {
1934                         std::string stufftobounce = params[0];
1935                         this->WriteLine(":"+Srv->GetServerName()+" PONG "+stufftobounce);
1936                         return true;
1937                 }
1938                 else
1939                 {
1940                         std::string forwardto = params[1];
1941                         if (forwardto == Srv->GetServerName())
1942                         {
1943                                 // this is a ping for us, send back PONG to the requesting server
1944                                 params[1] = params[0];
1945                                 params[0] = forwardto;
1946                                 DoOneToOne(forwardto,"PONG",params,params[1]);
1947                         }
1948                         else
1949                         {
1950                                 // not for us, pass it on :)
1951                                 DoOneToOne(prefix,"PING",params,forwardto);
1952                         }
1953                         return true;
1954                 }
1955         }
1956
1957         bool RemoteServer(std::string prefix, std::deque<std::string> &params)
1958         {
1959                 if (params.size() < 4)
1960                         return false;
1961
1962                 std::string servername = params[0];
1963                 std::string password = params[1];
1964                 // hopcount is not used for a remote server, we calculate this ourselves
1965                 std::string description = params[3];
1966                 TreeServer* ParentOfThis = FindServer(prefix);
1967
1968                 if (!ParentOfThis)
1969                 {
1970                         this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
1971                         return false;
1972                 }
1973                 TreeServer* CheckDupe = FindServer(servername);
1974                 if (CheckDupe)
1975                 {
1976                         this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
1977                         Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
1978                         return false;
1979                 }
1980                 TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
1981                 ParentOfThis->AddChild(Node);
1982                 params[3] = ":" + params[3];
1983                 DoOneToAllButSender(prefix,"SERVER",params,prefix);
1984                 Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
1985                 return true;
1986         }
1987
1988         bool Outbound_Reply_Server(std::deque<std::string> &params)
1989         {
1990                 if (params.size() < 4)
1991                         return false;
1992
1993                 irc::string servername = params[0].c_str();
1994                 std::string sname = params[0];
1995                 std::string password = params[1];
1996                 int hops = atoi(params[2].c_str());
1997
1998                 if (hops)
1999                 {
2000                         this->WriteLine("ERROR :Server too far away for authentication");
2001                         Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2002                         return false;
2003                 }
2004                 std::string description = params[3];
2005                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2006                 {
2007                         if ((x->Name == servername) && (x->RecvPass == password))
2008                         {
2009                                 TreeServer* CheckDupe = FindServer(sname);
2010                                 if (CheckDupe)
2011                                 {
2012                                         this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2013                                         Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2014                                         return false;
2015                                 }
2016                                 // Begin the sync here. this kickstarts the
2017                                 // other side, waiting in WAIT_AUTH_2 state,
2018                                 // into starting their burst, as it shows
2019                                 // that we're happy.
2020                                 this->LinkState = CONNECTED;
2021                                 // we should add the details of this server now
2022                                 // to the servers tree, as a child of the root
2023                                 // node.
2024                                 TreeServer* Node = new TreeServer(sname,description,TreeRoot,this);
2025                                 TreeRoot->AddChild(Node);
2026                                 params[3] = ":" + params[3];
2027                                 DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,sname);
2028                                 this->bursting = true;
2029                                 this->DoBurst(Node);
2030                                 return true;
2031                         }
2032                 }
2033                 this->WriteLine("ERROR :Invalid credentials");
2034                 Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, invalid link credentials");
2035                 return false;
2036         }
2037
2038         bool Inbound_Server(std::deque<std::string> &params)
2039         {
2040                 if (params.size() < 4)
2041                         return false;
2042
2043                 irc::string servername = params[0].c_str();
2044                 std::string sname = params[0];
2045                 std::string password = params[1];
2046                 int hops = atoi(params[2].c_str());
2047
2048                 if (hops)
2049                 {
2050                         this->WriteLine("ERROR :Server too far away for authentication");
2051                         Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
2052                         return false;
2053                 }
2054                 std::string description = params[3];
2055                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2056                 {
2057                         if ((x->Name == servername) && (x->RecvPass == password))
2058                         {
2059                                 TreeServer* CheckDupe = FindServer(sname);
2060                                 if (CheckDupe)
2061                                 {
2062                                         this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
2063                                         Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
2064                                         return false;
2065                                 }
2066                                 /* If the config says this link is encrypted, but the remote side
2067                                  * hasnt bothered to send the AES command before SERVER, then we
2068                                  * boot them off as we MUST have this connection encrypted.
2069                                  */
2070                                 if ((x->EncryptionKey != "") && (!this->ctx_in))
2071                                 {
2072                                         this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
2073                                         Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, remote server did not enable AES.");
2074                                         return false;
2075                                 }
2076                                 Srv->SendOpers("*** Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
2077                                 this->InboundServerName = sname;
2078                                 this->InboundDescription = description;
2079                                 // this is good. Send our details: Our server name and description and hopcount of 0,
2080                                 // along with the sendpass from this block.
2081                                 this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
2082                                 // move to the next state, we are now waiting for THEM.
2083                                 this->LinkState = WAIT_AUTH_2;
2084                                 return true;
2085                         }
2086                 }
2087                 this->WriteLine("ERROR :Invalid credentials");
2088                 Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, invalid link credentials");
2089                 return false;
2090         }
2091
2092         void Split(std::string line, bool stripcolon, std::deque<std::string> &n)
2093         {
2094                 // we don't do anything with a line > 2048
2095                 if (line.length() > 2048)
2096                 {
2097                         log(DEBUG,"Line too long!");
2098                         return;
2099                 }
2100                 if (!strchr(line.c_str(),' '))
2101                 {
2102                         n.push_back(line);
2103                         return;
2104                 }
2105                 std::stringstream s(line);
2106                 int count = 0;
2107                 char param[1024];
2108                 char* pptr = param;
2109
2110                 n.clear();
2111                 int item = 0;
2112                 while (!s.eof())
2113                 {
2114                         char c = 0;
2115                         s.get(c);
2116                         if (c == ' ')
2117                         {
2118                                 *pptr = 0;
2119                                 if (*param)
2120                                         n.push_back(param);
2121                                 *param = count = 0;
2122                                 pptr = param;
2123                                 item++;
2124                         }
2125                         else
2126                         {
2127                                 if (!s.eof())
2128                                 {
2129                                         *pptr++ = c;
2130                                         count++;
2131                                 }
2132                                 if ((*param == ':') && (count == 1) && (item > 0))
2133                                 {
2134                                         *param = count = 0;
2135                                         pptr = param;
2136                                         while (!s.eof())
2137                                         {
2138                                                 s.get(c);
2139                                                 if (!s.eof())
2140                                                 {
2141                                                         *pptr++ = c;
2142                                                         count++;
2143                                                 }
2144                                         }
2145                                         *pptr = 0;
2146                                         n.push_back(param);
2147                                         *param = count = 0;
2148                                         pptr = param;
2149                                 }
2150                         }
2151                 }
2152                 *pptr = 0;
2153                 if (*param)
2154                 {
2155                         n.push_back(param);
2156                 }
2157
2158                 return;
2159         }
2160
2161         bool ProcessLine(std::string line)
2162         {
2163                 char* l = (char*)line.c_str();
2164                 for (char* x = l; *x; x++)
2165                 {
2166                         if ((*x == '\r') || (*x == '\n'))
2167                                 *x = 0;
2168                 }
2169                 if (!*l)
2170                         return true;
2171
2172                 log(DEBUG,"IN: %s",l);
2173
2174                 std::deque<std::string> params;
2175                 this->Split(l,true,params);
2176                 irc::string command = "";
2177                 std::string prefix = "";
2178                 if (((params[0].c_str())[0] == ':') && (params.size() > 1))
2179                 {
2180                         prefix = params[0];
2181                         command = params[1].c_str();
2182                         char* pref = (char*)prefix.c_str();
2183                         prefix = ++pref;
2184                         params.pop_front();
2185                         params.pop_front();
2186                 }
2187                 else
2188                 {
2189                         prefix = "";
2190                         command = params[0].c_str();
2191                         params.pop_front();
2192                 }
2193
2194                 if ((!this->ctx_in) && (command == "AES"))
2195                 {
2196                         std::string sserv = params[0];
2197                         for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
2198                         {
2199                                 if ((x->EncryptionKey != "") && (x->Name == sserv))
2200                                 {
2201                                         this->InitAES(x->EncryptionKey,sserv);
2202                                 }
2203                         }
2204
2205                         return true;
2206                 }
2207                 else if ((this->ctx_in) && (command == "AES"))
2208                 {
2209                         WriteOpers("*** \2AES\2: Encryption already enabled on this connection yet %s is trying to enable it twice!",params[0].c_str());
2210                 }
2211
2212                 switch (this->LinkState)
2213                 {
2214                         TreeServer* Node;
2215
2216                         case WAIT_AUTH_1:
2217                                 // Waiting for SERVER command from remote server. Server initiating
2218                                 // the connection sends the first SERVER command, listening server
2219                                 // replies with theirs if its happy, then if the initiator is happy,
2220                                 // it starts to send its net sync, which starts the merge, otherwise
2221                                 // it sends an ERROR.
2222                                 if (command == "PASS")
2223                                 {
2224                                         /* Silently ignored */
2225                                 }
2226                                 else if (command == "SERVER")
2227                                 {
2228                                         return this->Inbound_Server(params);
2229                                 }
2230                                 else if (command == "ERROR")
2231                                 {
2232                                         return this->Error(params);
2233                                 }
2234                                 else if (command == "USER")
2235                                 {
2236                                         this->WriteLine("ERROR :Client connections to this port are prohibited.");
2237                                         return false;
2238                                 }
2239                                 else if (command == "CAPAB")
2240                                 {
2241                                         return this->Capab(params);
2242                                 }
2243                                 else if ((command == "U") || (command == "S"))
2244                                 {
2245                                         this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2246                                         return false;
2247                                 }
2248                                 else
2249                                 {
2250                                         this->WriteLine("ERROR :Invalid command in negotiation phase.");
2251                                         return false;
2252                                 }
2253                         break;
2254                         case WAIT_AUTH_2:
2255                                 // Waiting for start of other side's netmerge to say they liked our
2256                                 // password.
2257                                 if (command == "SERVER")
2258                                 {
2259                                         // cant do this, they sent it to us in the WAIT_AUTH_1 state!
2260                                         // silently ignore.
2261                                         return true;
2262                                 }
2263                                 else if ((command == "U") || (command == "S"))
2264                                 {
2265                                         this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
2266                                         return false;
2267                                 }
2268                                 else if (command == "BURST")
2269                                 {
2270                                         if (params.size())
2271                                         {
2272                                                 /* If a time stamp is provided, try and check syncronization */
2273                                                 time_t THEM = atoi(params[0].c_str());
2274                                                 long delta = THEM-time(NULL);
2275                                                 if ((delta < -600) || (delta > 600))
2276                                                 {
2277                                                         WriteOpers("*** \2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta));
2278                                                         this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
2279                                                         return false;
2280                                                 }
2281                                                 else if ((delta < -60) || (delta > 60))
2282                                                 {
2283                                                         WriteOpers("*** \2WARNING\2: Your clocks are out by %d seconds, please consider synching your clocks.",abs(delta));
2284                                                 }
2285                                         }
2286                                         this->LinkState = CONNECTED;
2287                                         Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
2288                                         TreeRoot->AddChild(Node);
2289                                         params.clear();
2290                                         params.push_back(InboundServerName);
2291                                         params.push_back("*");
2292                                         params.push_back("1");
2293                                         params.push_back(":"+InboundDescription);
2294                                         DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
2295                                         this->bursting = true;
2296                                         this->DoBurst(Node);
2297                                 }
2298                                 else if (command == "ERROR")
2299                                 {
2300                                         return this->Error(params);
2301                                 }
2302                                 else if (command == "CAPAB")
2303                                 {
2304                                         return this->Capab(params);
2305                                 }
2306
2307                         break;
2308                         case LISTENER:
2309                                 this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
2310                                 return false;
2311                         break;
2312                         case CONNECTING:
2313                                 if (command == "SERVER")
2314                                 {
2315                                         // another server we connected to, which was in WAIT_AUTH_1 state,
2316                                         // has just sent us their credentials. If we get this far, theyre
2317                                         // happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
2318                                         // if we're happy with this, we should send our netburst which
2319                                         // kickstarts the merge.
2320                                         return this->Outbound_Reply_Server(params);
2321                                 }
2322                                 else if (command == "ERROR")
2323                                 {
2324                                         return this->Error(params);
2325                                 }
2326                         break;
2327                         case CONNECTED:
2328                                 // This is the 'authenticated' state, when all passwords
2329                                 // have been exchanged and anything past this point is taken
2330                                 // as gospel.
2331
2332                                 if (prefix != "")
2333                                 {
2334                                         std::string direction = prefix;
2335                                         userrec* t = Srv->FindNick(prefix);
2336                                         if (t)
2337                                         {
2338                                                 direction = t->server;
2339                                         }
2340                                         TreeServer* route_back_again = BestRouteTo(direction);
2341                                         if ((!route_back_again) || (route_back_again->GetSocket() != this))
2342                                         {
2343                                                 if (route_back_again)
2344                                                         log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
2345                                                 return true;
2346                                         }
2347
2348                                         /* Fix by brain:
2349                                          * When there is activity on the socket, reset the ping counter so
2350                                          * that we're not wasting bandwidth pinging an active server.
2351                                          */
2352                                         route_back_again->SetNextPingTime(time(NULL) + 120);
2353                                         route_back_again->SetPingFlag();
2354                                 }
2355
2356                                 if (command == "SVSMODE")
2357                                 {
2358                                         /* Services expects us to implement
2359                                          * SVSMODE. In inspircd its the same as
2360                                          * MODE anyway.
2361                                          */
2362                                         command = "MODE";
2363                                 }
2364                                 std::string target = "";
2365                                 /* Yes, know, this is a mess. Its reasonably fast though as we're
2366                                  * working with std::string here.
2367                                  */
2368                                 if ((command == "NICK") && (params.size() > 1))
2369                                 {
2370                                         return this->IntroduceClient(prefix,params);
2371                                 }
2372                                 else if (command == "FJOIN")
2373                                 {
2374                                         return this->ForceJoin(prefix,params);
2375                                 }
2376                                 else if (command == "SERVER")
2377                                 {
2378                                         return this->RemoteServer(prefix,params);
2379                                 }
2380                                 else if (command == "ERROR")
2381                                 {
2382                                         return this->Error(params);
2383                                 }
2384                                 else if (command == "OPERTYPE")
2385                                 {
2386                                         return this->OperType(prefix,params);
2387                                 }
2388                                 else if (command == "FMODE")
2389                                 {
2390                                         return this->ForceMode(prefix,params);
2391                                 }
2392                                 else if (command == "KILL")
2393                                 {
2394                                         return this->RemoteKill(prefix,params);
2395                                 }
2396                                 else if (command == "FTOPIC")
2397                                 {
2398                                         return this->ForceTopic(prefix,params);
2399                                 }
2400                                 else if (command == "REHASH")
2401                                 {
2402                                         return this->RemoteRehash(prefix,params);
2403                                 }
2404                                 else if (command == "METADATA")
2405                                 {
2406                                         return this->MetaData(prefix,params);
2407                                 }
2408                                 else if (command == "PING")
2409                                 {
2410                                         /*
2411                                          * We just got a ping from a server that's bursting.
2412                                          * This can't be right, so set them to not bursting, and
2413                                          * apply their lines.
2414                                          */
2415                                         if (this->bursting)
2416                                         {
2417                                                 this->bursting = false;
2418                                                 apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
2419                                         }
2420                                         if (prefix == "")
2421                                         {
2422                                                 prefix = this->GetName();
2423                                         }
2424                                         return this->LocalPing(prefix,params);
2425                                 }
2426                                 else if (command == "PONG")
2427                                 {
2428                                         /*
2429                                          * We just got a pong from a server that's bursting.
2430                                          * This can't be right, so set them to not bursting, and
2431                                          * apply their lines.
2432                                          */
2433                                         if (this->bursting)
2434                                         {
2435                                                 this->bursting = false;
2436                                                 apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
2437                                         }
2438                                         if (prefix == "")
2439                                         {
2440                                                 prefix = this->GetName();
2441                                         }
2442                                         return this->LocalPong(prefix,params);
2443                                 }
2444                                 else if (command == "VERSION")
2445                                 {
2446                                         return this->ServerVersion(prefix,params);
2447                                 }
2448                                 else if (command == "FHOST")
2449                                 {
2450                                         return this->ChangeHost(prefix,params);
2451                                 }
2452                                 else if (command == "FNAME")
2453                                 {
2454                                         return this->ChangeName(prefix,params);
2455                                 }
2456                                 else if (command == "ADDLINE")
2457                                 {
2458                                         return this->AddLine(prefix,params);
2459                                 }
2460                                 else if (command == "SVSNICK")
2461                                 {
2462                                         if (prefix == "")
2463                                         {
2464                                                 prefix = this->GetName();
2465                                         }
2466                                         return this->ForceNick(prefix,params);
2467                                 }
2468                                 else if (command == "IDLE")
2469                                 {
2470                                         return this->Whois(prefix,params);
2471                                 }
2472                                 else if (command == "PUSH")
2473                                 {
2474                                         return this->Push(prefix,params);
2475                                 }
2476                                 else if (command == "TIME")
2477                                 {
2478                                         return this->Time(prefix,params);
2479                                 }
2480                                 else if ((command == "KICK") && (IsServer(prefix)))
2481                                 {
2482                                         std::string sourceserv = this->myhost;
2483                                         if (params.size() == 3)
2484                                         {
2485                                                 userrec* user = Srv->FindNick(params[1]);
2486                                                 chanrec* chan = Srv->FindChannel(params[0]);
2487                                                 if (user && chan)
2488                                                 {
2489                                                         server_kick_channel(user,chan,(char*)params[2].c_str(),false);
2490                                                 }
2491                                         }
2492                                         if (this->InboundServerName != "")
2493                                         {
2494                                                 sourceserv = this->InboundServerName;
2495                                         }
2496                                         return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
2497                                 }
2498                                 else if (command == "SVSJOIN")
2499                                 {
2500                                         if (prefix == "")
2501                                         {
2502                                                 prefix = this->GetName();
2503                                         }
2504                                         return this->ServiceJoin(prefix,params);
2505                                 }
2506                                 else if (command == "SQUIT")
2507                                 {
2508                                         if (params.size() == 2)
2509                                         {
2510                                                 this->Squit(FindServer(params[0]),params[1]);
2511                                         }
2512                                         return true;
2513                                 }
2514                                 else if (command == "ENDBURST")
2515                                 {
2516                                         this->bursting = false;
2517                                         apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
2518                                         std::string sourceserv = this->myhost;
2519                                         if (this->InboundServerName != "")
2520                                         {
2521                                                 sourceserv = this->InboundServerName;
2522                                         }
2523                                         WriteOpers("*** Received end of netburst from \2%s\2",sourceserv.c_str());
2524                                         return true;
2525                                 }
2526                                 else
2527                                 {
2528                                         // not a special inter-server command.
2529                                         // Emulate the actual user doing the command,
2530                                         // this saves us having a huge ugly parser.
2531                                         userrec* who = Srv->FindNick(prefix);
2532                                         std::string sourceserv = this->myhost;
2533                                         if (this->InboundServerName != "")
2534                                         {
2535                                                 sourceserv = this->InboundServerName;
2536                                         }
2537                                         if (who)
2538                                         {
2539                                                 if (command == "QUIT")
2540                                                 {
2541                                                         TreeServer* s = FindServer(who->server);
2542                                                         if (s)
2543                                                         {
2544                                                                 s->DelUser(who);
2545                                                         }
2546                                                 }
2547                                                 else if ((command == "NICK") && (params.size() > 0))
2548                                                 {
2549                                                         /* On nick messages, check that the nick doesnt
2550                                                          * already exist here. If it does, kill their copy,
2551                                                          * and our copy.
2552                                                          */
2553                                                         userrec* x = Srv->FindNick(params[0]);
2554                                                         if (x)
2555                                                         {
2556                                                                 std::deque<std::string> p;
2557                                                                 p.push_back(params[0]);
2558                                                                 p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
2559                                                                 DoOneToMany(Srv->GetServerName(),"KILL",p);
2560                                                                 p.clear();
2561                                                                 p.push_back(prefix);
2562                                                                 p.push_back("Nickname collision");
2563                                                                 DoOneToMany(Srv->GetServerName(),"KILL",p);
2564                                                                 Srv->QuitUser(x,"Nickname collision ("+prefix+" -> "+params[0]+")");
2565                                                                 userrec* y = Srv->FindNick(prefix);
2566                                                                 if (y)
2567                                                                 {
2568                                                                         Srv->QuitUser(y,"Nickname collision");
2569                                                                 }
2570                                                                 return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
2571                                                         }
2572                                                 }
2573                                                 // its a user
2574                                                 target = who->server;
2575                                                 char* strparams[127];
2576                                                 for (unsigned int q = 0; q < params.size(); q++)
2577                                                 {
2578                                                         strparams[q] = (char*)params[q].c_str();
2579                                                 }
2580                                                 if (!Srv->CallCommandHandler(command.c_str(), strparams, params.size(), who))
2581                                                 {
2582                                                         this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
2583                                                         return false;
2584                                                 }
2585                                         }
2586                                         else
2587                                         {
2588                                                 // its not a user. Its either a server, or somethings screwed up.
2589                                                 if (IsServer(prefix))
2590                                                 {
2591                                                         target = Srv->GetServerName();
2592                                                 }
2593                                                 else
2594                                                 {
2595                                                         log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
2596                                                         return true;
2597                                                 }
2598                                         }
2599                                         return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
2600
2601                                 }
2602                                 return true;
2603                         break;
2604                 }
2605                 return true;
2606         }
2607
2608         virtual std::string GetName()
2609         {
2610                 std::string sourceserv = this->myhost;
2611                 if (this->InboundServerName != "")
2612                 {
2613                         sourceserv = this->InboundServerName;
2614                 }
2615                 return sourceserv;
2616         }
2617
2618         virtual void OnTimeout()
2619         {
2620                 if (this->LinkState == CONNECTING)
2621                 {
2622                         Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
2623                 }
2624         }
2625
2626         virtual void OnClose()
2627         {
2628                 // Connection closed.
2629                 // If the connection is fully up (state CONNECTED)
2630                 // then propogate a netsplit to all peers.
2631                 std::string quitserver = this->myhost;
2632                 if (this->InboundServerName != "")
2633                 {
2634                         quitserver = this->InboundServerName;
2635                 }
2636                 TreeServer* s = FindServer(quitserver);
2637                 if (s)
2638                 {
2639                         Squit(s,"Remote host closed the connection");
2640                 }
2641                 WriteOpers("Server '\2%s\2' closed the connection.",quitserver.c_str());
2642         }
2643
2644         virtual int OnIncomingConnection(int newsock, char* ip)
2645         {
2646                 TreeSocket* s = new TreeSocket(newsock, ip);
2647                 Srv->AddSocket(s);
2648                 return true;
2649         }
2650 };
2651
2652 void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
2653 {
2654         for (unsigned int c = 0; c < list.size(); c++)
2655         {
2656                 if (list[c] == server)
2657                 {
2658                         return;
2659                 }
2660         }
2661         list.push_back(server);
2662 }
2663
2664 // returns a list of DIRECT servernames for a specific channel
2665 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
2666 {
2667         CUList *ulist = c->GetUsers();
2668         for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
2669         {
2670                 if (i->second->fd < 0)
2671                 {
2672                         TreeServer* best = BestRouteTo(i->second->server);
2673                         if (best)
2674                                 AddThisServer(best,list);
2675                 }
2676         }
2677         return;
2678 }
2679
2680 bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> &params)
2681 {
2682         TreeServer* omitroute = BestRouteTo(omit);
2683         if ((command == "NOTICE") || (command == "PRIVMSG"))
2684         {
2685                 if ((params.size() >= 2) && (*(params[0].c_str()) != '$'))
2686                 {
2687                         /* Prefixes */
2688                         if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
2689                         {
2690                                 params[0] = params[0].substr(1, params[0].length()-1);
2691                         }
2692                         if (*(params[0].c_str()) != '#')
2693                         {
2694                                 // special routing for private messages/notices
2695                                 userrec* d = Srv->FindNick(params[0]);
2696                                 if (d)
2697                                 {
2698                                         std::deque<std::string> par;
2699                                         par.push_back(params[0]);
2700                                         par.push_back(":"+params[1]);
2701                                         DoOneToOne(prefix,command.c_str(),par,d->server);
2702                                         return true;
2703                                 }
2704                         }
2705                         else
2706                         {
2707                                 log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
2708                                 chanrec* c = Srv->FindChannel(params[0]);
2709                                 if (c)
2710                                 {
2711                                         std::deque<TreeServer*> list;
2712                                         GetListOfServersForChannel(c,list);
2713                                         log(DEBUG,"Got a list of %d servers",list.size());
2714                                         unsigned int lsize = list.size();
2715                                         for (unsigned int i = 0; i < lsize; i++)
2716                                         {
2717                                                 TreeSocket* Sock = list[i]->GetSocket();
2718                                                 if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
2719                                                 {
2720                                                         log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
2721                                                         Sock->WriteLine(data);
2722                                                 }
2723                                         }
2724                                         return true;
2725                                 }
2726                         }
2727                 }
2728         }
2729         unsigned int items = TreeRoot->ChildCount();
2730         for (unsigned int x = 0; x < items; x++)
2731         {
2732                 TreeServer* Route = TreeRoot->GetChild(x);
2733                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
2734                 {
2735                         TreeSocket* Sock = Route->GetSocket();
2736                         Sock->WriteLine(data);
2737                 }
2738         }
2739         return true;
2740 }
2741
2742 bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> &params, std::string omit)
2743 {
2744         TreeServer* omitroute = BestRouteTo(omit);
2745         std::string FullLine = ":" + prefix + " " + command;
2746         unsigned int words = params.size();
2747         for (unsigned int x = 0; x < words; x++)
2748         {
2749                 FullLine = FullLine + " " + params[x];
2750         }
2751         unsigned int items = TreeRoot->ChildCount();
2752         for (unsigned int x = 0; x < items; x++)
2753         {
2754                 TreeServer* Route = TreeRoot->GetChild(x);
2755                 // Send the line IF:
2756                 // The route has a socket (its a direct connection)
2757                 // The route isnt the one to be omitted
2758                 // The route isnt the path to the one to be omitted
2759                 if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
2760                 {
2761                         TreeSocket* Sock = Route->GetSocket();
2762                         Sock->WriteLine(FullLine);
2763                 }
2764         }
2765         return true;
2766 }
2767
2768 bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> &params)
2769 {
2770         std::string FullLine = ":" + prefix + " " + command;
2771         unsigned int words = params.size();
2772         for (unsigned int x = 0; x < words; x++)
2773         {
2774                 FullLine = FullLine + " " + params[x];
2775         }
2776         unsigned int items = TreeRoot->ChildCount();
2777         for (unsigned int x = 0; x < items; x++)
2778         {
2779                 TreeServer* Route = TreeRoot->GetChild(x);
2780                 if (Route->GetSocket())
2781                 {
2782                         TreeSocket* Sock = Route->GetSocket();
2783                         Sock->WriteLine(FullLine);
2784                 }
2785         }
2786         return true;
2787 }
2788
2789 bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> &params, std::string target)
2790 {
2791         TreeServer* Route = BestRouteTo(target);
2792         if (Route)
2793         {
2794                 std::string FullLine = ":" + prefix + " " + command;
2795                 unsigned int words = params.size();
2796                 for (unsigned int x = 0; x < words; x++)
2797                 {
2798                         FullLine = FullLine + " " + params[x];
2799                 }
2800                 if (Route->GetSocket())
2801                 {
2802                         TreeSocket* Sock = Route->GetSocket();
2803                         Sock->WriteLine(FullLine);
2804                 }
2805                 return true;
2806         }
2807         else
2808         {
2809                 return true;
2810         }
2811 }
2812
2813 std::vector<TreeSocket*> Bindings;
2814
2815 void ReadConfiguration(bool rebind)
2816 {
2817         Conf = new ConfigReader;
2818         if (rebind)
2819         {
2820                 for (int j =0; j < Conf->Enumerate("bind"); j++)
2821                 {
2822                         std::string Type = Conf->ReadValue("bind","type",j);
2823                         std::string IP = Conf->ReadValue("bind","address",j);
2824                         long Port = Conf->ReadInteger("bind","port",j,true);
2825                         if (Type == "servers")
2826                         {
2827                                 if (IP == "*")
2828                                 {
2829                                         IP = "";
2830                                 }
2831                                 TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
2832                                 if (listener->GetState() == I_LISTENING)
2833                                 {
2834                                         Srv->AddSocket(listener);
2835                                         Bindings.push_back(listener);
2836                                 }
2837                                 else
2838                                 {
2839                                         log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
2840                                         listener->Close();
2841                                         delete listener;
2842                                 }
2843                         }
2844                 }
2845         }
2846         FlatLinks = Conf->ReadFlag("options","flatlinks",0);
2847         HideULines = Conf->ReadFlag("options","hideulines",0);
2848         LinkBlocks.clear();
2849         for (int j =0; j < Conf->Enumerate("link"); j++)
2850         {
2851                 Link L;
2852                 L.Name = (Conf->ReadValue("link","name",j)).c_str();
2853                 L.IPAddr = Conf->ReadValue("link","ipaddr",j);
2854                 L.Port = Conf->ReadInteger("link","port",j,true);
2855                 L.SendPass = Conf->ReadValue("link","sendpass",j);
2856                 L.RecvPass = Conf->ReadValue("link","recvpass",j);
2857                 L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
2858                 L.EncryptionKey =  Conf->ReadValue("link","encryptionkey",j);
2859                 L.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
2860                 L.NextConnectTime = time(NULL) + L.AutoConnect;
2861                 /* Bugfix by brain, do not allow people to enter bad configurations */
2862                 if ((L.IPAddr != "") && (L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
2863                 {
2864                         LinkBlocks.push_back(L);
2865                         log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
2866                 }
2867                 else
2868                 {
2869                         if (L.IPAddr == "")
2870                         {
2871                                 log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
2872                         }
2873                         else if (L.RecvPass == "")
2874                         {
2875                                 log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
2876                         }
2877                         else if (L.SendPass == "")
2878                         {
2879                                 log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
2880                         }
2881                         else if (L.Name == "")
2882                         {
2883                                 log(DEFAULT,"Invalid configuration, link tag without a name!");
2884                         }
2885                         else if (!L.Port)
2886                         {
2887                                 log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
2888                         }
2889                 }
2890         }
2891         delete Conf;
2892 }
2893
2894
2895 class ModuleSpanningTree : public Module
2896 {
2897         std::vector<TreeSocket*> Bindings;
2898         int line;
2899         int NumServers;
2900         unsigned int max_local;
2901         unsigned int max_global;
2902         cmd_rconnect* command_rconnect;
2903
2904  public:
2905
2906         ModuleSpanningTree(Server* Me)
2907                 : Module::Module(Me), max_local(0), max_global(0)
2908         {
2909                 Srv = Me;
2910                 Bindings.clear();
2911
2912                 // Create the root of the tree
2913                 TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
2914
2915                 ReadConfiguration(true);
2916
2917                 command_rconnect = new cmd_rconnect(this);
2918                 Srv->AddCommand(command_rconnect);
2919         }
2920
2921         void ShowLinks(TreeServer* Current, userrec* user, int hops)
2922         {
2923                 std::string Parent = TreeRoot->GetName();
2924                 if (Current->GetParent())
2925                 {
2926                         Parent = Current->GetParent()->GetName();
2927                 }
2928                 for (unsigned int q = 0; q < Current->ChildCount(); q++)
2929                 {
2930                         if ((HideULines) && (Srv->IsUlined(Current->GetChild(q)->GetName())))
2931                         {
2932                                 if (*user->oper)
2933                                 {
2934                                          ShowLinks(Current->GetChild(q),user,hops+1);
2935                                 }
2936                         }
2937                         else
2938                         {
2939                                 ShowLinks(Current->GetChild(q),user,hops+1);
2940                         }
2941                 }
2942                 /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
2943                 if ((HideULines) && (Srv->IsUlined(Current->GetName())) && (!*user->oper))
2944                         return;
2945                 WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),(FlatLinks && (!*user->oper)) ? Srv->GetServerName().c_str() : Parent.c_str(),(FlatLinks && (!*user->oper)) ? 0 : hops,Current->GetDesc().c_str());
2946         }
2947
2948         int CountLocalServs()
2949         {
2950                 return TreeRoot->ChildCount();
2951         }
2952
2953         int CountServs()
2954         {
2955                 return serverlist.size();
2956         }
2957
2958         void HandleLinks(char** parameters, int pcnt, userrec* user)
2959         {
2960                 ShowLinks(TreeRoot,user,0);
2961                 WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
2962                 return;
2963         }
2964
2965         void HandleLusers(char** parameters, int pcnt, userrec* user)
2966         {
2967                 unsigned int n_users = usercnt();
2968
2969                 /* Only update these when someone wants to see them, more efficient */
2970                 if ((unsigned int)local_count() > max_local)
2971                         max_local = local_count();
2972                 if (n_users > max_global)
2973                         max_global = n_users;
2974
2975                 WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-usercount_invisible(),usercount_invisible(),this->CountServs());
2976                 WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
2977                 WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
2978                 WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
2979                 WriteServ(user->fd,"254 %s :I have %d clients and %d servers",user->nick,local_count(),this->CountLocalServs());
2980                 WriteServ(user->fd,"265 %s :Current Local Users: %d  Max: %d",user->nick,local_count(),max_local);
2981                 WriteServ(user->fd,"266 %s :Current Global Users: %d  Max: %d",user->nick,n_users,max_global);
2982                 return;
2983         }
2984
2985         // WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
2986
2987         void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers)
2988         {
2989                 if (line < 128)
2990                 {
2991                         for (int t = 0; t < depth; t++)
2992                         {
2993                                 matrix[line][t] = ' ';
2994                         }
2995
2996                         // For Aligning, we need to work out exactly how deep this thing is, and produce
2997                         // a 'Spacer' String to compensate.
2998                         char spacer[40];
2999
3000                         memset(spacer,' ',40);
3001                         if ((40 - Current->GetName().length() - depth) > 1) {
3002                                 spacer[40 - Current->GetName().length() - depth] = '\0';
3003                         }
3004                         else
3005                         {
3006                                 spacer[5] = '\0';
3007                         }
3008
3009                         float percent;
3010                         char text[80];
3011                         if (clientlist.size() == 0) {
3012                                 // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
3013                                 percent = 0;
3014                         }
3015                         else
3016                         {
3017                                 percent = ((float)Current->GetUserCount() / (float)clientlist.size()) * 100;
3018                         }
3019                         snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
3020                         totusers += Current->GetUserCount();
3021                         totservers++;
3022                         strlcpy(&matrix[line][depth],text,80);
3023                         line++;
3024                         for (unsigned int q = 0; q < Current->ChildCount(); q++)
3025                         {
3026                                 if ((HideULines) && (Srv->IsUlined(Current->GetChild(q)->GetName())))
3027                                 {
3028                                         if (*user->oper)
3029                                         {
3030                                                 ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3031                                         }
3032                                 }
3033                                 else
3034                                 {
3035                                         ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
3036                                 }
3037                         }
3038                 }
3039         }
3040
3041         // Ok, prepare to be confused.
3042         // After much mulling over how to approach this, it struck me that
3043         // the 'usual' way of doing a /MAP isnt the best way. Instead of
3044         // keeping track of a ton of ascii characters, and line by line
3045         // under recursion working out where to place them using multiplications
3046         // and divisons, we instead render the map onto a backplane of characters
3047         // (a character matrix), then draw the branches as a series of "L" shapes
3048         // from the nodes. This is not only friendlier on CPU it uses less stack.
3049
3050         void HandleMap(char** parameters, int pcnt, userrec* user)
3051         {
3052                 // This array represents a virtual screen which we will
3053                 // "scratch" draw to, as the console device of an irc
3054                 // client does not provide for a proper terminal.
3055                 float totusers = 0;
3056                 float totservers = 0;
3057                 char matrix[128][80];
3058                 for (unsigned int t = 0; t < 128; t++)
3059                 {
3060                         matrix[t][0] = '\0';
3061                 }
3062                 line = 0;
3063                 // The only recursive bit is called here.
3064                 ShowMap(TreeRoot,user,0,matrix,totusers,totservers);
3065                 // Process each line one by one. The algorithm has a limit of
3066                 // 128 servers (which is far more than a spanning tree should have
3067                 // anyway, so we're ok). This limit can be raised simply by making
3068                 // the character matrix deeper, 128 rows taking 10k of memory.
3069                 for (int l = 1; l < line; l++)
3070                 {
3071                         // scan across the line looking for the start of the
3072                         // servername (the recursive part of the algorithm has placed
3073                         // the servers at indented positions depending on what they
3074                         // are related to)
3075                         int first_nonspace = 0;
3076                         while (matrix[l][first_nonspace] == ' ')
3077                         {
3078                                 first_nonspace++;
3079                         }
3080                         first_nonspace--;
3081                         // Draw the `- (corner) section: this may be overwritten by
3082                         // another L shape passing along the same vertical pane, becoming
3083                         // a |- (branch) section instead.
3084                         matrix[l][first_nonspace] = '-';
3085                         matrix[l][first_nonspace-1] = '`';
3086                         int l2 = l - 1;
3087                         // Draw upwards until we hit the parent server, causing possibly
3088                         // other corners (`-) to become branches (|-)
3089                         while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
3090                         {
3091                                 matrix[l2][first_nonspace-1] = '|';
3092                                 l2--;
3093                         }
3094                 }
3095                 // dump the whole lot to the user. This is the easy bit, honest.
3096                 for (int t = 0; t < line; t++)
3097                 {
3098                         WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
3099                 }
3100                 float avg_users = totusers / totservers;
3101                 WriteServ(user->fd,"270 %s :%.0f server%s and %.0f user%s, average %.2f users per server",user->nick,totservers,(totservers > 1 ? "s" : ""),totusers,(totusers > 1 ? "s" : ""),avg_users);
3102         WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
3103                 return;
3104         }
3105
3106         int HandleSquit(char** parameters, int pcnt, userrec* user)
3107         {
3108                 TreeServer* s = FindServerMask(parameters[0]);
3109                 if (s)
3110                 {
3111                         if (s == TreeRoot)
3112                         {
3113                                  WriteServ(user->fd,"NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
3114                                 return 1;
3115                         }
3116                         TreeSocket* sock = s->GetSocket();
3117                         if (sock)
3118                         {
3119                                 log(DEBUG,"Splitting server %s",s->GetName().c_str());
3120                                 WriteOpers("*** SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
3121                                 sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
3122                                 Srv->RemoveSocket(sock);
3123                         }
3124                         else
3125                         {
3126                                 WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
3127                         }
3128                 }
3129                 else
3130                 {
3131                          WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
3132                 }
3133                 return 1;
3134         }
3135
3136         int HandleTime(char** parameters, int pcnt, userrec* user)
3137         {
3138                 if ((user->fd > -1) && (pcnt))
3139                 {
3140                         TreeServer* found = FindServerMask(parameters[0]);
3141                         if (found)
3142                         {
3143                                 // we dont' override for local server
3144                                 if (found == TreeRoot)
3145                                         return 0;
3146
3147                                 std::deque<std::string> params;
3148                                 params.push_back(found->GetName());
3149                                 params.push_back(user->nick);
3150                                 DoOneToOne(Srv->GetServerName(),"TIME",params,found->GetName());
3151                         }
3152                         else
3153                         {
3154                                 WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
3155                         }
3156                 }
3157                 return 1;
3158         }
3159
3160         int HandleRemoteWhois(char** parameters, int pcnt, userrec* user)
3161         {
3162                 if ((user->fd > -1) && (pcnt > 1))
3163                 {
3164                         userrec* remote = Srv->FindNick(parameters[1]);
3165                         if ((remote) && (remote->fd < 0))
3166                         {
3167                                 std::deque<std::string> params;
3168                                 params.push_back(parameters[1]);
3169                                 DoOneToOne(user->nick,"IDLE",params,remote->server);
3170                                 return 1;
3171                         }
3172                         else if (!remote)
3173                         {
3174                                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[1]);
3175                                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
3176                                 return 1;
3177                         }
3178                 }
3179                 return 0;
3180         }
3181
3182         void DoPingChecks(time_t curtime)
3183         {
3184                 for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
3185                 {
3186                         TreeServer* serv = TreeRoot->GetChild(j);
3187                         TreeSocket* sock = serv->GetSocket();
3188                         if (sock)
3189                         {
3190                                 if (curtime >= serv->NextPingTime())
3191                                 {
3192                                         if (serv->AnsweredLastPing())
3193                                         {
3194                                                 sock->WriteLine(":"+Srv->GetServerName()+" PING "+serv->GetName());
3195                                                 serv->SetNextPingTime(curtime + 120);
3196                                         }
3197                                         else
3198                                         {
3199                                                 // they didnt answer, boot them
3200                                                 WriteOpers("*** Server \002%s\002 pinged out",serv->GetName().c_str());
3201                                                 sock->Squit(serv,"Ping timeout");
3202                                                 Srv->RemoveSocket(sock);
3203                                                 return;
3204                                         }
3205                                 }
3206                         }
3207                 }
3208         }
3209
3210         void AutoConnectServers(time_t curtime)
3211         {
3212                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
3213                 {
3214                         if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
3215                         {
3216                                 log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
3217                                 x->NextConnectTime = curtime + x->AutoConnect;
3218                                 TreeServer* CheckDupe = FindServer(x->Name.c_str());
3219                                 if (!CheckDupe)
3220                                 {
3221                                         // an autoconnected server is not connected. Check if its time to connect it
3222                                         WriteOpers("*** AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
3223                                         TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name.c_str());
3224                                         if (newsocket->GetState() != I_ERROR)
3225                                         {
3226                                                 Srv->AddSocket(newsocket);
3227                                         }
3228                                         else
3229                                         {
3230                                                 WriteOpers("*** AUTOCONNECT: Error autoconnecting \002%s\002.",x->Name.c_str());
3231                                                 delete newsocket;
3232                                         }
3233                                 }
3234                         }
3235                 }
3236         }
3237
3238         int HandleVersion(char** parameters, int pcnt, userrec* user)
3239         {
3240                 // we've already checked if pcnt > 0, so this is safe
3241                 TreeServer* found = FindServerMask(parameters[0]);
3242                 if (found)
3243                 {
3244                         std::string Version = found->GetVersion();
3245                         WriteServ(user->fd,"351 %s :%s",user->nick,Version.c_str());
3246                         if (found == TreeRoot)
3247                         {
3248                                 std::stringstream out(Config->data005);
3249                                 std::string token = "";
3250                                 std::string line5 = "";
3251                                 int token_counter = 0;
3252
3253                                 while (!out.eof())
3254                                 {
3255                                         out >> token;
3256                                         line5 = line5 + token + " ";
3257                                         token_counter++;
3258
3259                                         if ((token_counter >= 13) || (out.eof() == true))
3260                                         {
3261                                                 WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
3262                                                 line5 = "";
3263                                                 token_counter = 0;
3264                                         }
3265                                 }
3266                         }
3267                 }
3268                 else
3269                 {
3270                         WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
3271                 }
3272                 return 1;
3273         }
3274
3275         int HandleConnect(char** parameters, int pcnt, userrec* user)
3276         {
3277                 for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
3278                 {
3279                         if (Srv->MatchText(x->Name.c_str(),parameters[0]))
3280                         {
3281                                 TreeServer* CheckDupe = FindServer(x->Name.c_str());
3282                                 if (!CheckDupe)
3283                                 {
3284                                         WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",user->nick,x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
3285                                         TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name.c_str());
3286                                         if (newsocket->GetState() != I_ERROR)
3287                                         {
3288                                                 Srv->AddSocket(newsocket);
3289                                         }
3290                                         else
3291                                         {
3292                                                 WriteServ(user->fd,"NOTICE %s :*** CONNECT: Error connecting \002%s\002.",user->nick,x->Name.c_str());
3293                                                 delete newsocket;
3294                                         }
3295                                         return 1;
3296                                 }
3297                                 else
3298                                 {
3299                                         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());
3300                                         return 1;
3301                                 }
3302                         }
3303                 }
3304                 WriteServ(user->fd,"NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
3305                 return 1;
3306         }
3307
3308         virtual int OnStats(char statschar, userrec* user)
3309         {
3310                 if (statschar == 'c')
3311                 {
3312                         for (unsigned int i = 0; i < LinkBlocks.size(); i++)
3313                         {
3314                                 WriteServ(user->fd,"213 %s C *@%s * %s %d 0 %c%c%c",user->nick,(LinkBlocks[i].HiddenFromStats ? "<hidden>" : LinkBlocks[i].IPAddr).c_str(),LinkBlocks[i].Name.c_str(),LinkBlocks[i].Port,(LinkBlocks[i].EncryptionKey != "" ? 'e' : '-'),(LinkBlocks[i].AutoConnect ? 'a' : '-'),'s');
3315                                 WriteServ(user->fd,"244 %s H * * %s",user->nick,LinkBlocks[i].Name.c_str());
3316                         }
3317                         WriteServ(user->fd,"219 %s %c :End of /STATS report",user->nick,statschar);
3318                         WriteOpers("*** Notice: Stats '%c' requested by %s (%s@%s)",statschar,user->nick,user->ident,user->host);
3319                         return 1;
3320                 }
3321                 return 0;
3322         }
3323
3324         virtual int OnPreCommand(const std::string &command, char **parameters, int pcnt, userrec *user, bool validated)
3325         {
3326                 /* If the command doesnt appear to be valid, we dont want to mess with it. */
3327                 if (!validated)
3328                         return 0;
3329
3330                 if (command == "CONNECT")
3331                 {
3332                         return this->HandleConnect(parameters,pcnt,user);
3333                 }
3334                 else if (command == "SQUIT")
3335                 {
3336                         return this->HandleSquit(parameters,pcnt,user);
3337                 }
3338                 else if (command == "MAP")
3339                 {
3340                         this->HandleMap(parameters,pcnt,user);
3341                         return 1;
3342                 }
3343                 else if ((command == "TIME") && (pcnt > 0))
3344                 {
3345                         return this->HandleTime(parameters,pcnt,user);
3346                 }
3347                 else if (command == "LUSERS")
3348                 {
3349                         this->HandleLusers(parameters,pcnt,user);
3350                         return 1;
3351                 }
3352                 else if (command == "LINKS")
3353                 {
3354                         this->HandleLinks(parameters,pcnt,user);
3355                         return 1;
3356                 }
3357                 else if (command == "WHOIS")
3358                 {
3359                         if (pcnt > 1)
3360                         {
3361                                 // remote whois
3362                                 return this->HandleRemoteWhois(parameters,pcnt,user);
3363                         }
3364                 }
3365                 else if ((command == "VERSION") && (pcnt > 0))
3366                 {
3367                         this->HandleVersion(parameters,pcnt,user);
3368                         return 1;
3369                 }
3370                 else if (Srv->IsValidModuleCommand(command, pcnt, user))
3371                 {
3372                         // this bit of code cleverly routes all module commands
3373                         // to all remote severs *automatically* so that modules
3374                         // can just handle commands locally, without having
3375                         // to have any special provision in place for remote
3376                         // commands and linking protocols.
3377                         std::deque<std::string> params;
3378                         params.clear();
3379                         for (int j = 0; j < pcnt; j++)
3380                         {
3381                                 if (strchr(parameters[j],' '))
3382                                 {
3383                                         params.push_back(":" + std::string(parameters[j]));
3384                                 }
3385                                 else
3386                                 {
3387                                         params.push_back(std::string(parameters[j]));
3388                                 }
3389                         }
3390                         log(DEBUG,"Globally route '%s'",command.c_str());
3391                         DoOneToMany(user->nick,command,params);
3392                 }
3393                 return 0;
3394         }
3395
3396         virtual void OnGetServerDescription(const std::string &servername,std::string &description)
3397         {
3398                 TreeServer* s = FindServer(servername);
3399                 if (s)
3400                 {
3401                         description = s->GetDesc();
3402                 }
3403         }
3404
3405         virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
3406         {
3407                 if (source->fd > -1)
3408                 {
3409                         std::deque<std::string> params;
3410                         params.push_back(dest->nick);
3411                         params.push_back(channel->name);
3412                         DoOneToMany(source->nick,"INVITE",params);
3413                 }
3414         }
3415
3416         virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic)
3417         {
3418                 std::deque<std::string> params;
3419                 params.push_back(chan->name);
3420                 params.push_back(":"+topic);
3421                 DoOneToMany(user->nick,"TOPIC",params);
3422         }
3423
3424         virtual void OnWallops(userrec* user, const std::string &text)
3425         {
3426                 if (user->fd > -1)
3427                 {
3428                         std::deque<std::string> params;
3429                         params.push_back(":"+text);
3430                         DoOneToMany(user->nick,"WALLOPS",params);
3431                 }
3432         }
3433
3434         virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
3435         {
3436                 if (target_type == TYPE_USER)
3437                 {
3438                         userrec* d = (userrec*)dest;
3439                         if ((d->fd < 0) && (user->fd > -1))
3440                         {
3441                                 std::deque<std::string> params;
3442                                 params.clear();
3443                                 params.push_back(d->nick);
3444                                 params.push_back(":"+text);
3445                                 DoOneToOne(user->nick,"NOTICE",params,d->server);
3446                         }
3447                 }
3448                 else
3449                 {
3450                         if (user->fd > -1)
3451                         {
3452                                 chanrec *c = (chanrec*)dest;
3453                                 std::string cname = c->name;
3454                                 if (status)
3455                                         cname = status + cname;
3456                                 std::deque<TreeServer*> list;
3457                                 GetListOfServersForChannel(c,list);
3458                                 unsigned int ucount = list.size();
3459                                 for (unsigned int i = 0; i < ucount; i++)
3460                                 {
3461                                         TreeSocket* Sock = list[i]->GetSocket();
3462                                         if (Sock)
3463                                                 Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text);
3464                                 }
3465                         }
3466                 }
3467         }
3468
3469         virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
3470         {
3471                 if (target_type == TYPE_USER)
3472                 {
3473                         // route private messages which are targetted at clients only to the server
3474                         // which needs to receive them
3475                         userrec* d = (userrec*)dest;
3476                         if ((d->fd < 0) && (user->fd > -1))
3477                         {
3478                                 std::deque<std::string> params;
3479                                 params.clear();
3480                                 params.push_back(d->nick);
3481                                 params.push_back(":"+text);
3482                                 DoOneToOne(user->nick,"PRIVMSG",params,d->server);
3483                         }
3484                 }
3485                 else
3486                 {
3487                         if (user->fd > -1)
3488                         {
3489                                 chanrec *c = (chanrec*)dest;
3490                                 std::string cname = c->name;
3491                                 if (status)
3492                                         cname = status + cname;
3493                                 std::deque<TreeServer*> list;
3494                                 GetListOfServersForChannel(c,list);
3495                                 unsigned int ucount = list.size();
3496                                 for (unsigned int i = 0; i < ucount; i++)
3497                                 {
3498                                         TreeSocket* Sock = list[i]->GetSocket();
3499                                         if (Sock)
3500                                                 Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text);
3501                                 }
3502                         }
3503                 }
3504         }
3505
3506         virtual void OnBackgroundTimer(time_t curtime)
3507         {
3508                 AutoConnectServers(curtime);
3509                 DoPingChecks(curtime);
3510         }
3511
3512         virtual void OnUserJoin(userrec* user, chanrec* channel)
3513         {
3514                 // Only do this for local users
3515                 if (user->fd > -1)
3516                 {
3517                         std::deque<std::string> params;
3518                         params.clear();
3519                         params.push_back(channel->name);
3520                         if (*channel->key)
3521                         {
3522                                 // if the channel has a key, force the join by emulating the key.
3523                                 params.push_back(channel->key);
3524                         }
3525                         if (channel->GetUserCounter() > 1)
3526                         {
3527                                 // not the first in the channel
3528                                 DoOneToMany(user->nick,"JOIN",params);
3529                         }
3530                         else
3531                         {
3532                                 // first in the channel, set up their permissions
3533                                 // and the channel TS with FJOIN.
3534                                 char ts[24];
3535                                 snprintf(ts,24,"%lu",(unsigned long)channel->age);
3536                                 params.clear();
3537                                 params.push_back(channel->name);
3538                                 params.push_back(ts);
3539                                 params.push_back("@"+std::string(user->nick));
3540                                 DoOneToMany(Srv->GetServerName(),"FJOIN",params);
3541                         }
3542                 }
3543         }
3544
3545         virtual void OnChangeHost(userrec* user, const std::string &newhost)
3546         {
3547                 // only occurs for local clients
3548                 if (user->registered != 7)
3549                         return;
3550                 std::deque<std::string> params;
3551                 params.push_back(newhost);
3552                 DoOneToMany(user->nick,"FHOST",params);
3553         }
3554
3555         virtual void OnChangeName(userrec* user, const std::string &gecos)
3556         {
3557                 // only occurs for local clients
3558                 if (user->registered != 7)
3559                         return;
3560                 std::deque<std::string> params;
3561                 params.push_back(gecos);
3562                 DoOneToMany(user->nick,"FNAME",params);
3563         }
3564
3565         virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage)
3566         {
3567                 if (user->fd > -1)
3568                 {
3569                         std::deque<std::string> params;
3570                         params.push_back(channel->name);
3571                         if (partmessage != "")
3572                                 params.push_back(":"+partmessage);
3573                         DoOneToMany(user->nick,"PART",params);
3574                 }
3575         }
3576
3577         virtual void OnUserConnect(userrec* user)
3578         {
3579                 char agestr[MAXBUF];
3580                 if (user->fd > -1)
3581                 {
3582                         std::deque<std::string> params;
3583                         snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
3584                         params.push_back(agestr);
3585                         params.push_back(user->nick);
3586                         params.push_back(user->host);
3587                         params.push_back(user->dhost);
3588                         params.push_back(user->ident);
3589                         params.push_back("+"+std::string(user->modes));
3590                         params.push_back((char*)inet_ntoa(user->ip4));
3591                         params.push_back(":"+std::string(user->fullname));
3592                         DoOneToMany(Srv->GetServerName(),"NICK",params);
3593
3594                         // User is Local, change needs to be reflected!
3595                         TreeServer* SourceServer = FindServer(user->server);
3596                         if (SourceServer)
3597                         {
3598                                 SourceServer->AddUserCount();
3599                         }
3600
3601                 }
3602         }
3603
3604         virtual void OnUserQuit(userrec* user, const std::string &reason)
3605         {
3606                 if ((user->fd > -1) && (user->registered == 7))
3607                 {
3608                         std::deque<std::string> params;
3609                         params.push_back(":"+reason);
3610                         DoOneToMany(user->nick,"QUIT",params);
3611                 }
3612                 // Regardless, We need to modify the user Counts..
3613                 TreeServer* SourceServer = FindServer(user->server);
3614                 if (SourceServer)
3615                 {
3616                         SourceServer->DelUserCount();
3617                 }
3618
3619         }
3620
3621         virtual void OnUserPostNick(userrec* user, const std::string &oldnick)
3622         {
3623                 if (user->fd > -1)
3624                 {
3625                         std::deque<std::string> params;
3626                         params.push_back(user->nick);
3627                         DoOneToMany(oldnick,"NICK",params);
3628                 }
3629         }
3630
3631         virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
3632         {
3633                 if ((source) && (source->fd > -1))
3634                 {
3635                         std::deque<std::string> params;
3636                         params.push_back(chan->name);
3637                         params.push_back(user->nick);
3638                         params.push_back(":"+reason);
3639                         DoOneToMany(source->nick,"KICK",params);
3640                 }
3641                 else if (!source)
3642                 {
3643                         std::deque<std::string> params;
3644                         params.push_back(chan->name);
3645                         params.push_back(user->nick);
3646                         params.push_back(":"+reason);
3647                         DoOneToMany(Srv->GetServerName(),"KICK",params);
3648                 }
3649         }
3650
3651         virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason)
3652         {
3653                 std::deque<std::string> params;
3654                 params.push_back(dest->nick);
3655                 params.push_back(":"+reason);
3656                 DoOneToMany(source->nick,"KILL",params);
3657         }
3658
3659         virtual void OnRehash(const std::string &parameter)
3660         {
3661                 if (parameter != "")
3662                 {
3663                         std::deque<std::string> params;
3664                         params.push_back(parameter);
3665                         DoOneToMany(Srv->GetServerName(),"REHASH",params);
3666                         // check for self
3667                         if (Srv->MatchText(Srv->GetServerName(),parameter))
3668                         {
3669                                 Srv->SendOpers("*** Remote rehash initiated from server \002"+Srv->GetServerName()+"\002.");
3670                                 Srv->RehashServer();
3671                         }
3672                 }
3673                 ReadConfiguration(false);
3674         }
3675
3676         // note: the protocol does not allow direct umode +o except
3677         // via NICK with 8 params. sending OPERTYPE infers +o modechange
3678         // locally.
3679         virtual void OnOper(userrec* user, const std::string &opertype)
3680         {
3681                 if (user->fd > -1)
3682                 {
3683                         std::deque<std::string> params;
3684                         params.push_back(opertype);
3685                         DoOneToMany(user->nick,"OPERTYPE",params);
3686                 }
3687         }
3688
3689         void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason)
3690         {
3691                 if (source->fd > -1)
3692                 {
3693                         char type[8];
3694                         snprintf(type,8,"%cLINE",linetype);
3695                         std::string stype = type;
3696                         if (adding)
3697                         {
3698                                 char sduration[MAXBUF];
3699                                 snprintf(sduration,MAXBUF,"%ld",duration);
3700                                 std::deque<std::string> params;
3701                                 params.push_back(host);
3702                                 params.push_back(sduration);
3703                                 params.push_back(":"+reason);
3704                                 DoOneToMany(source->nick,stype,params);
3705                         }
3706                         else
3707                         {
3708                                 std::deque<std::string> params;
3709                                 params.push_back(host);
3710                                 DoOneToMany(source->nick,stype,params);
3711                         }
3712                 }
3713         }
3714
3715         virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
3716         {
3717                 OnLine(source,hostmask,true,'G',duration,reason);
3718         }
3719
3720         virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask)
3721         {
3722                 OnLine(source,ipmask,true,'Z',duration,reason);
3723         }
3724
3725         virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask)
3726         {
3727                 OnLine(source,nickmask,true,'Q',duration,reason);
3728         }
3729
3730         virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
3731         {
3732                 OnLine(source,hostmask,true,'E',duration,reason);
3733         }
3734
3735         virtual void OnDelGLine(userrec* source, const std::string &hostmask)
3736         {
3737                 OnLine(source,hostmask,false,'G',0,"");
3738         }
3739
3740         virtual void OnDelZLine(userrec* source, const std::string &ipmask)
3741         {
3742                 OnLine(source,ipmask,false,'Z',0,"");
3743         }
3744
3745         virtual void OnDelQLine(userrec* source, const std::string &nickmask)
3746         {
3747                 OnLine(source,nickmask,false,'Q',0,"");
3748         }
3749
3750         virtual void OnDelELine(userrec* source, const std::string &hostmask)
3751         {
3752                 OnLine(source,hostmask,false,'E',0,"");
3753         }
3754
3755         virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text)
3756         {
3757                 if ((user->fd > -1) && (user->registered == 7))
3758                 {
3759                         if (target_type == TYPE_USER)
3760                         {
3761                                 userrec* u = (userrec*)dest;
3762                                 std::deque<std::string> params;
3763                                 params.push_back(u->nick);
3764                                 params.push_back(text);
3765                                 DoOneToMany(user->nick,"MODE",params);
3766                         }
3767                         else
3768                         {
3769                                 chanrec* c = (chanrec*)dest;
3770                                 std::deque<std::string> params;
3771                                 params.push_back(c->name);
3772                                 params.push_back(text);
3773                                 DoOneToMany(user->nick,"MODE",params);
3774                         }
3775                 }
3776         }
3777
3778         virtual void OnSetAway(userrec* user)
3779         {
3780                 if (IS_LOCAL(user))
3781                 {
3782                         std::deque<std::string> params;
3783                         params.push_back(":"+std::string(user->awaymsg));
3784                         DoOneToMany(user->nick,"AWAY",params);
3785                 }
3786         }
3787
3788         virtual void OnCancelAway(userrec* user)
3789         {
3790                 if (IS_LOCAL(user))
3791                 {
3792                         std::deque<std::string> params;
3793                         params.clear();
3794                         DoOneToMany(user->nick,"AWAY",params);
3795                 }
3796         }
3797
3798         virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
3799         {
3800                 TreeSocket* s = (TreeSocket*)opaque;
3801                 if (target)
3802                 {
3803                         if (target_type == TYPE_USER)
3804                         {
3805                                 userrec* u = (userrec*)target;
3806                                 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+u->nick+" "+modeline);
3807                         }
3808                         else
3809                         {
3810                                 chanrec* c = (chanrec*)target;
3811                                 s->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" "+modeline);
3812                         }
3813                 }
3814         }
3815
3816         virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
3817         {
3818                 TreeSocket* s = (TreeSocket*)opaque;
3819                 if (target)
3820                 {
3821                         if (target_type == TYPE_USER)
3822                         {
3823                                 userrec* u = (userrec*)target;
3824                                 s->WriteLine(":"+Srv->GetServerName()+" METADATA "+u->nick+" "+extname+" :"+extdata);
3825                         }
3826                         else if (target_type == TYPE_OTHER)
3827                         {
3828                                 s->WriteLine(":"+Srv->GetServerName()+" METADATA * "+extname+" :"+extdata);
3829                         }
3830                         else if (target_type == TYPE_CHANNEL)
3831                         {
3832                                 chanrec* c = (chanrec*)target;
3833                                 s->WriteLine(":"+Srv->GetServerName()+" METADATA "+c->name+" "+extname+" :"+extdata);
3834                         }
3835                 }
3836         }
3837
3838         virtual void OnEvent(Event* event)
3839         {
3840                 if (event->GetEventID() == "send_metadata")
3841                 {
3842                         std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
3843                         if (params->size() < 3)
3844                                 return;
3845                         (*params)[2] = ":" + (*params)[2];
3846                         DoOneToMany(Srv->GetServerName(),"METADATA",*params);
3847                 }
3848         }
3849
3850         virtual ~ModuleSpanningTree()
3851         {
3852         }
3853
3854         virtual Version GetVersion()
3855         {
3856                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
3857         }
3858
3859         void Implements(char* List)
3860         {
3861                 List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
3862                 List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
3863                 List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
3864                 List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
3865                 List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
3866                 List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
3867                 List[I_OnStats] = List[I_ProtoSendMetaData] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = 1;
3868         }
3869
3870         /* It is IMPORTANT that m_spanningtree is the last module in the chain
3871          * so that any activity it sees is FINAL, e.g. we arent going to send out
3872          * a NICK message before m_cloaking has finished putting the +x on the user,
3873          * etc etc.
3874          * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
3875          * the module call queue.
3876          */
3877         Priority Prioritize()
3878         {
3879                 return PRIORITY_LAST;
3880         }
3881 };
3882
3883
3884 class ModuleSpanningTreeFactory : public ModuleFactory
3885 {
3886  public:
3887         ModuleSpanningTreeFactory()
3888         {
3889         }
3890
3891         ~ModuleSpanningTreeFactory()
3892         {
3893         }
3894
3895         virtual Module * CreateModule(Server* Me)
3896         {
3897                 TreeProtocolModule = new ModuleSpanningTree(Me);
3898                 return TreeProtocolModule;
3899         }
3900
3901 };
3902
3903
3904 extern "C" void * init_module( void )
3905 {
3906         return new ModuleSpanningTreeFactory;
3907 }