C++ NET_OutOfBandPrint函数代码示例

void SV_MasterHeartbeat( const char *hbname )
{
	int             i;
	int             netenabled;

	netenabled = Cvar_VariableIntegerValue( "net_enabled" );

	// "dedicated 1" is for LAN play, "dedicated 2" is for Internet play
	if ( !com_dedicated || com_dedicated->integer != 2 || !( netenabled & ( NET_ENABLEV4 | NET_ENABLEV6 ) ) )
	{
		return; // only dedicated servers send heartbeats
	}

	// if not time yet, don't send anything
	if ( svs.time < svs.nextHeartbeatTime )
	{
		return;
	}

	svs.nextHeartbeatTime = svs.time + HEARTBEAT_MSEC;

	SV_ResolveMasterServers();

	// send to group masters
	for ( i = 0; i < MAX_MASTER_SERVERS; i++ )
	{
		if ( masterServerAddr[ i ].ipv4.type == NA_BAD && masterServerAddr[ i ].ipv6.type == NA_BAD )
		{
			continue;
		}

		Com_Printf(_( "Sending heartbeat to %s\n"), sv_master[ i ]->string );

		// this command should be changed if the server info / status format
		// ever incompatibly changes

		if ( masterServerAddr[ i ].ipv4.type != NA_BAD )
		{
			NET_OutOfBandPrint( NS_SERVER, masterServerAddr[ i ].ipv4, "heartbeat %s\n", hbname );
		}

		if ( masterServerAddr[ i ].ipv6.type != NA_BAD )
		{
			NET_OutOfBandPrint( NS_SERVER, masterServerAddr[ i ].ipv6, "heartbeat %s\n", hbname );
		}
	}
}

/*
=================
SV_ReadPackets
=================
*/
void SV_PacketEvent( netadr_t from, msg_t *msg ) {
	int			i;
	client_t	*cl;
	int			qport;

	// check for connectionless packet (0xffffffff) first
	if ( msg->cursize >= 4 && *(int *)msg->data == -1) {
		SV_ConnectionlessPacket( from, msg );
		return;
	}

	// read the qport out of the message so we can fix up
	// stupid address translating routers
	MSG_BeginReading( msg );
	MSG_ReadLong( msg );				// sequence number
	MSG_ReadLong( msg );				// sequence number
	qport = MSG_ReadShort( msg ) & 0xffff;

	// find which client the message is from
	for (i=0, cl=svs.clients ; i < 1 ; i++,cl++) {
		if (cl->state == CS_FREE) {
			continue;
		}
		if ( !NET_CompareBaseAdr( from, cl->netchan.remoteAddress ) ) {
			continue;
		}
		// it is possible to have multiple clients from a single IP
		// address, so they are differentiated by the qport variable
		if (cl->netchan.qport != qport) {
			continue;
		}

		// the IP port can't be used to differentiate them, because
		// some address translating routers periodically change UDP
		// port assignments
		if (cl->netchan.remoteAddress.port != from.port) {
			Com_Printf( "SV_ReadPackets: fixing up a translated port\n" );
			cl->netchan.remoteAddress.port = from.port;
		}

		// make sure it is a valid, in sequence packet
		if (Netchan_Process(&cl->netchan, msg)) {
			// zombie clients stil neet to do the Netchan_Process
			// to make sure they don't need to retransmit the final
			// reliable message, but they don't do any other processing
			if (cl->state != CS_ZOMBIE) {
				cl->lastPacketTime = sv.time;	// don't timeout
				cl->frames[ cl->netchan.incomingAcknowledged & PACKET_MASK ]
					.messageAcked = sv.time;
				SV_ExecuteClientMessage( cl, msg );
			}
		}
		return;
	}
	
	// if we received a sequenced packet from an address we don't reckognize,
	// send an out of band disconnect packet to it
	NET_OutOfBandPrint( NS_SERVER, from, "disconnect" );
}

void SVC_Info( netadr_t* from ) {
	int i, count;
	char    *gamedir;
	char infostring[MAX_INFO_STRING];
	char* g_password;
	
	if ( !SV_VerifyChallenge( Cmd_Argv( 1 ) ) ) {
		return;
	}
	
	g_password = Cvar_VariableString("g_password");
	// don't count privateclients
	count = 0;
	for ( i = sv_privateClients->integer ; i < sv_maxclients->integer ; i++ ) {
		if ( getclient(i)->state >= CS_CONNECTED ) {
			count++;
		}
	}
	
	infostring[0] = 0;
	
	// echo back the parameter to status. so servers can use it as a challenge
	// to prevent timed spoofed reply packets that add ghost servers
	Info_SetValueForKey( infostring, "challenge", Cmd_Argv( 1 ) );
	
	Info_SetValueForKey( infostring, "protocol", va("%i", protocol->integer));
	Info_SetValueForKey( infostring, "hostname", sv_hostname->string );

	Info_SetValueForKey( infostring, "mapname", mapname->string );
	
	Info_SetValueForKey( infostring, "clients", va( "%i", count ) );
	#ifdef xDEBUG
	Info_SetValueForKey( infostring, "sv_maxclients", va( "%i", sv_maxclients->integer - sv_privateClients->integer ) );
	#else
	Info_SetValueForKey( infostring, "sv_maxclients", va( "%i", sv_maxclients->integer - sv_privateClients->integer ) );
	#endif
	Info_SetValueForKey( infostring, "gametype", g_gametype->string );
	Info_SetValueForKey( infostring, "pure", va( "%i", sv_pure->integer ) );
	Info_SetValueForKey(infostring, "codextended", va("v%d", CURRENTBUILD));
	
	if ( sv_minPing->integer ) {
		Info_SetValueForKey( infostring, "minPing", va( "%i", sv_minPing->integer ) );
	}
	if ( sv_maxPing->integer ) {
		Info_SetValueForKey( infostring, "maxPing", va( "%i", sv_maxPing->integer ) );
	}
	gamedir = Cvar_VariableString( "fs_game" );
	if ( *gamedir ) {
		Info_SetValueForKey( infostring, "game", gamedir );
	}
	Info_SetValueForKey( infostring, "sv_allowAnonymous", va( "%i", sv_allowAnonymous->integer ) );

	if(*g_password)
	    Info_SetValueForKey( infostring, "pswrd", "1");
	else
	    Info_SetValueForKey( infostring, "pswrd", "0");
	
	NET_OutOfBandPrint( NS_SERVER, *from, "infoResponse\n%s", infostring );
}

void SV_MasterHeartbeat( void ) {
	static netadr_t	adr[MAX_MASTER_SERVERS];
	int			i;
	int			time;

	// "dedicated 1" is for lan play, "dedicated 2" is for inet public play
	if ( !com_dedicated || com_dedicated->integer != 2 ) {
		return;		// only dedicated servers send heartbeats
	}

	// if not time yet, don't send anything
	if ( svs.time < svs.nextHeartbeatTime ) {
		return;
	}
	svs.nextHeartbeatTime = svs.time + HEARTBEAT_MSEC;

	//we need to use this instead of svs.time since svs.time resets over map changes (or rather
	//every time the game restarts), and we don't really need to resolve every map change
	time = Com_Milliseconds();

	// send to group masters
	for ( i = 0 ; i < MAX_MASTER_SERVERS ; i++ ) {
		if ( !sv_master[i]->string[0] ) {
			continue;
		}

		// see if we haven't already resolved the name
		// resolving usually causes hitches on win95, so only
		// do it when needed
		if ( sv_master[i]->modified || SV_MasterNeedsResolving(i, time) ) {
			sv_master[i]->modified = qfalse;

			g_lastResolveTime[i] = time;
	
			Com_Printf( "Resolving %s\n", sv_master[i]->string );
			if ( !NET_StringToAdr( sv_master[i]->string, &adr[i] ) ) {
				// if the address failed to resolve, clear it
				// so we don't take repeated dns hits
				Com_Printf( "Couldn't resolve address: %s\n", sv_master[i]->string );
				Cvar_Set( sv_master[i]->name, "" );
				sv_master[i]->modified = qfalse;
				continue;
			}
			if ( !strstr( ":", sv_master[i]->string ) ) {
				adr[i].port = BigShort( PORT_MASTER );
			}
			Com_Printf( "%s resolved to %i.%i.%i.%i:%i\n", sv_master[i]->string,
				adr[i].ip[0], adr[i].ip[1], adr[i].ip[2], adr[i].ip[3],
				BigShort( adr[i].port ) );
		}


		Com_Printf ("Sending heartbeat to %s\n", sv_master[i]->string );
		// this command should be changed if the server info / status format
		// ever incompatably changes
		NET_OutOfBandPrint( NS_SERVER, adr[i], "heartbeat %s\n", HEARTBEAT_GAME );
	}
}

void SVC_Status( netadr_t* from ) {
	char player[1024];
	char status[MAX_MSGLEN];
	int i;
	client_t    *cl;
	int/*playerState_t*/   *ps;
	int statusLength;
	int playerLength;
	char infostring[MAX_INFO_STRING];
	
	int custom_mod = 0;
	char *fs_game = Cvar_VariableString("fs_game");
	
	if(fs_game && *fs_game)
		custom_mod = 1;
	
	challenge_t* challenge;
	
	if ( !SV_VerifyChallenge( Cmd_Argv( 1 ) ) ) {
		return;
	}

	strcpy( infostring, Cvar_InfoString( 4 )); //1.5 uses 8196

	Info_SetValueForKey( infostring, "challenge", Cmd_Argv( 1 ) );

	status[0] = 0;
	statusLength = 0;

	for ( i = 0 ; i < sv_maxclients->integer ; i++ ) {
		cl = getclient(i);
		
		if ( cl->state >= CS_CONNECTED ) {
			//ps = SV_GameClientNum( i );
			Com_sprintf( player, sizeof( player ), "%i %i \"%s\"\n",
						 SV_GetClientScore(cl), cl->ping, cl->name );
			playerLength = strlen( player );
			if ( statusLength + playerLength >= sizeof( status ) ) {
				break;      // can't hold any more
			}
			strcpy( status + statusLength, player );
			statusLength += playerLength;
		}
	}
	
	#if CODPATCH == 5
	if(sv_disableClientConsole->integer)
		Info_SetValueForKey(infostring, "con_disabled", va("%i", sv_disableClientConsole->integer));
	#endif
	
	char *g_password = Cvar_VariableString("g_password");
	
	Info_SetValueForKey(infostring, "pswrd", va("%i", (g_password && *g_password) ? 1 : 0));
	
	Info_SetValueForKey(infostring, "mod", va("%i", custom_mod));
	
	NET_OutOfBandPrint( NS_SERVER, *from, "statusResponse\n%s\n%s", infostring, status );
}

void CL_GlobalServers_f( void ) {
	netadr_t	to;
	int			i;
	int			count;
	char		*buffptr;
	char		command[1024];

	if (Cmd_Argc() < 3)
	{
		Com_Printf( 0, "usage: globalservers <master# 0-1> <protocol> [keywords]\n");
		return;	
	}

	cls.masterNum = atoi( Cmd_Argv(1) );

	Com_Printf( 0, "Requesting servers from the master...\n");

	// reset the list, waiting for response
	// -1 is used to distinguish a "no response"

	// TODO: supply multiple masters here
	NET_StringToAdr( "iw4.prod.fourdeltaone.net", &to );
	cls.numglobalservers = -1;
	cls.pingUpdateSource = 0;
	to.type = NA_IP;
	to.port = htons(20810);

	sprintf( command, "getservers IW4 %s", Cmd_Argv(2) );

	// tack on keywords
	buffptr = command + strlen( command );
	count   = Cmd_Argc();
	for (i=3; i<count; i++)
		buffptr += sprintf( buffptr, " %s", Cmd_Argv(i) );

	NET_OutOfBandPrint( NS_SERVER, to, command );

	NET_StringToAdr( "master.alterrev.net", &to );
	to.type = NA_IP;
	to.port = htons(20810);

	strcpy(command, "getservers IW4 142 full empty");

	NET_OutOfBandPrint(NS_SERVER, to, command);
}

void SV_MasterHeartbeat( const char *hbname ) {
	static netadr_t adr[MAX_MASTER_SERVERS];
	int i;

	// DHM - Nerve :: Update Server doesn't send heartbeat
#ifdef UPDATE_SERVER
	return;
#endif

	// "dedicated 1" is for lan play, "dedicated 2" is for inet public play
	if ( !com_dedicated || com_dedicated->integer != 2 ) {
		return;     // only dedicated servers send heartbeats
	}

	// if not time yet, don't send anything
	if ( svs.time < svs.nextHeartbeatTime ) {
		return;
	}
	svs.nextHeartbeatTime = svs.time + HEARTBEAT_MSEC;


	// send to group masters
	for ( i = 0 ; i < MAX_MASTER_SERVERS ; i++ ) {
		if ( !sv_master[i]->string[0] ) {
			continue;
		}

		// see if we haven't already resolved the name
		// resolving usually causes hitches on win95, so only
		// do it when needed
		if ( sv_master[i]->modified ) {
			sv_master[i]->modified = qfalse;

			Com_Printf( "Resolving %s\n", sv_master[i]->string );
			if ( !NET_StringToAdr( sv_master[i]->string, &adr[i] ) ) {
				// if the address failed to resolve, clear it
				// so we don't take repeated dns hits
				Com_Printf( "Couldn't resolve address: %s\n", sv_master[i]->string );
				Cvar_Set( sv_master[i]->name, "" );
				sv_master[i]->modified = qfalse;
				continue;
			}
			if ( !strstr( ":", sv_master[i]->string ) ) {
				adr[i].port = BigShort( PORT_MASTER );
			}
			Com_Printf( "%s resolved to %i.%i.%i.%i:%i\n", sv_master[i]->string,
						adr[i].ip[0], adr[i].ip[1], adr[i].ip[2], adr[i].ip[3],
						BigShort( adr[i].port ) );
		}


		Com_Printf( "Sending heartbeat to %s\n", sv_master[i]->string );
		// this command should be changed if the server info / status format
		// ever incompatably changes
		NET_OutOfBandPrint( NS_SERVER, adr[i], "heartbeat %s\n", hbname );
	}
}

/*
=================
SV_GetChallenge

A "getchallenge" OOB command has been received
Returns a challenge number that can be used
in a subsequent connectResponse command.
We do this to prevent denial of service attacks that
flood the server with invalid connection IPs.  With a
challenge, they must give a valid IP address.

If we are authorizing, a challenge request will cause a packet
to be sent to the authorize server.

When an authorizeip is returned, a challenge response will be
sent to that ip.
=================
*/
void SV_GetChallenge( netadr_t from ) {
	int		i;
	int		oldest;
	int		oldestTime;
	challenge_t	*challenge;

	// ignore if we are in single player
	if ( Cvar_VariableValue( "g_gametype" ) == GT_SINGLE_PLAYER || Cvar_VariableValue("ui_singlePlayerActive")) {
		return;
	}

	oldest = 0;
	oldestTime = 0x7fffffff;

	// see if we already have a challenge for this ip
	challenge = &svs.challenges[0];
	for (i = 0 ; i < MAX_CHALLENGES ; i++, challenge++) {
		if ( !challenge->connected && NET_CompareAdr( from, challenge->adr ) ) {
			break;
		}
		if ( challenge->time < oldestTime ) {
			oldestTime = challenge->time;
			oldest = i;
		}
	}

	if (i == MAX_CHALLENGES) {
		// this is the first time this client has asked for a challenge
		challenge = &svs.challenges[oldest];

		challenge->challenge = ( (rand() << 16) ^ rand() ) ^ svs.time;
		challenge->adr = from;
		challenge->firstTime = svs.time;
		challenge->time = svs.time;
		challenge->connected = qfalse;
		i = oldest;
	}

	// if they are on a lan address, send the challengeResponse immediately
	/*if ( Sys_IsLANAddress( from ) ) {
		challenge->pingTime = svs.time;
		NET_OutOfBandPrint( NS_SERVER, from, "challengeResponse %i", challenge->challenge );
		return;
	}*/

	// if they have been challenging for a long time and we
	// haven't heard anything from the authorize server, go ahead and
	// let them in, assuming the id server is down
	if ( svs.time - challenge->firstTime > AUTHORIZE_TIMEOUT ) {
		Com_DPrintf( "authorize server timed out\n" );

		challenge->pingTime = svs.time;
		NET_OutOfBandPrint( NS_SERVER, challenge->adr, 
			"challengeResponse %i", challenge->challenge );
		return;
	}
}

/*
================
SVC_Info

Responds with a short info message that should be enough to determine
if a user is interested in a server to do a full status
================
*/
void SVC_Info( netadr_t from ) {
	int		i, count;
	char	*gamedir;
	char	infostring[MAX_INFO_STRING];
	cvar_t	*g_hiddenClients;

	/*
	 * Check whether Cmd_Argv(1) has a sane length. This was not done in the original Quake3 version which led
	 * to the Infostring bug discovered by Luigi Auriemma. See http://aluigi.altervista.org/ for the advisory.
	 */

	// A maximum challenge length of 128 should be more than plenty.
	if(strlen(Cmd_Argv(1)) > 128)
		return;

	// don't count privateclients
	count = 0;
	for ( i = sv_privateClients->integer ; i < sv_maxclients->integer ; i++ ) {
		if ( svs.clients[i].state >= CS_CONNECTED ) {
			count++;
		}
	}

   g_hiddenClients = Cvar_Get( "g_hiddenClients", "0", 0 );
   if( g_hiddenClients->integer > sv_maxclients->integer - sv_privateClients->integer )
   {
      Cvar_Set( "g_hiddenClients", sv_maxclients->string - sv_privateClients->integer );
   }

	infostring[0] = 0;

	// echo back the parameter to status. so servers can use it as a challenge
	// to prevent timed spoofed reply packets that add ghost servers
	Info_SetValueForKey( infostring, "challenge", Cmd_Argv(1) );

	Info_SetValueForKey( infostring, "protocol", va("%i", PROTOCOL_VERSION) );
	Info_SetValueForKey( infostring, "hostname", sv_hostname->string );
	Info_SetValueForKey( infostring, "mapname", sv_mapname->string );
	Info_SetValueForKey( infostring, "clients", va("%i", count) );
	Info_SetValueForKey( infostring, "sv_maxclients", 
		va("%i", sv_maxclients->integer - sv_privateClients->integer - g_hiddenClients->integer ) );
	Info_SetValueForKey( infostring, "pure", va("%i", sv_pure->integer ) );

	if( sv_minPing->integer ) {
		Info_SetValueForKey( infostring, "minPing", va("%i", sv_minPing->integer) );
	}
	if( sv_maxPing->integer ) {
		Info_SetValueForKey( infostring, "maxPing", va("%i", sv_maxPing->integer) );
	}
	gamedir = Cvar_VariableString( "fs_game" );
	if( *gamedir ) {
		Info_SetValueForKey( infostring, "game", gamedir );
	}

	NET_OutOfBandPrint( NS_SERVER, from, "infoResponse\n%s", infostring );
}

/*
=================
SV_GetChallenge

A "getchallenge" OOB command has been received
Returns a challenge number that can be used
in a subsequent connectResponse command.
We do this to prevent denial of service attacks that
flood the server with invalid connection IPs.  With a
challenge, they must give a valid IP address.

If we are authorizing, a challenge request will cause a packet
to be sent to the authorize server.

When an authorizeip is returned, a challenge response will be
sent to that ip.

ioquake3/openjk: we added a possibility for clients to add a challenge
to their packets, to make it more difficult for malicious servers
to hi-jack client connections.
=================
*/
void SV_GetChallenge( netadr_t from ) {
	int		i;
	int		oldest;
	int		oldestTime;
	int		clientChallenge;
	challenge_t	*challenge;

	// ignore if we are in single player
	/*
	if ( Cvar_VariableValue( "g_gametype" ) == GT_SINGLE_PLAYER || Cvar_VariableValue("ui_singlePlayerActive")) {
		return;
	}
	*/
	if (Cvar_VariableValue("ui_singlePlayerActive"))
	{
		return;
	}

	oldest = 0;
	oldestTime = 0x7fffffff;

	// see if we already have a challenge for this ip
	challenge = &svs.challenges[0];
	clientChallenge = atoi(Cmd_Argv(1));

	for (i = 0 ; i < MAX_CHALLENGES ; i++, challenge++)
	{
		if(!challenge->connected && NET_CompareAdr(from, challenge->adr))
		{
			break;
		}
		if ( challenge->time < oldestTime )
		{
			oldestTime = challenge->time;
			oldest = i;
		}
	}

	if (i == MAX_CHALLENGES) {
		// this is the first time this client has asked for a challenge
		challenge = &svs.challenges[oldest];

		challenge->adr = from;
		challenge->firstTime = svs.time;
		challenge->time = svs.time;
		challenge->connected = qfalse;
	}

	// always generate a new challenge number, so the client cannot circumvent sv_maxping
	challenge->challenge = ( (rand() << 16) ^ rand() ) ^ svs.time;
	challenge->wasrefused = qfalse;

	challenge->pingTime = svs.time;
	NET_OutOfBandPrint( NS_SERVER, challenge->adr, "challengeResponse %i %i", challenge->challenge, clientChallenge );
}

/*
==================
SV_Ban_f

Ban a user from being able to play on this server through the auth
server
==================
*/
static void SV_Ban_f(void)
{
	client_t *cl;

	// make sure server is running
	if (!com_sv_running->integer)
	{
		Com_Printf("Server is not running.\n");
		return;
	}

	if (Cmd_Argc() != 2)
	{
		Com_Printf("Usage: banUser <player name>\n");
		return;
	}

	cl = SV_GetPlayerByName();

	if (!cl)
	{
		return;
	}

	if (cl->netchan.remoteAddress.type == NA_LOOPBACK)
	{
		SV_SendServerCommand(NULL, "print \"%s\"", "Cannot kick host player\n");
		return;
	}

	// look up the authorize server's IP
	if (!svs.authorizeAddress.ip[0] && svs.authorizeAddress.type != NA_BAD)
	{
		Com_Printf("Resolving %s\n", AUTHORIZE_SERVER_NAME);
		if (!NET_StringToAdr(AUTHORIZE_SERVER_NAME, &svs.authorizeAddress))
		{
			Com_Printf("Couldn't resolve address\n");
			return;
		}
		svs.authorizeAddress.port = BigShort(PORT_AUTHORIZE);
		Com_Printf("%s resolved to %i.%i.%i.%i:%i\n", AUTHORIZE_SERVER_NAME,
		           svs.authorizeAddress.ip[0], svs.authorizeAddress.ip[1],
		           svs.authorizeAddress.ip[2], svs.authorizeAddress.ip[3],
		           BigShort(svs.authorizeAddress.port));
	}

	// otherwise send their ip to the authorize server
	if (svs.authorizeAddress.type != NA_BAD)
	{
		NET_OutOfBandPrint(NS_SERVER, svs.authorizeAddress,
		                   "banUser %i.%i.%i.%i", cl->netchan.remoteAddress.ip[0], cl->netchan.remoteAddress.ip[1],
		                   cl->netchan.remoteAddress.ip[2], cl->netchan.remoteAddress.ip[3]);
		Com_Printf("%s was banned from coming back\n", rc(cl->name));
	}
}

/*
================
SVC_Status

Responds with all the info that qplug or qspy can see about the server
and all connected players.  Used for getting detailed information after
the simple info query.
================
*/
void SVC_Status( netadr_t from ) {
	char player[1024];
	char status[MAX_MSGLEN];
	int i;
	client_t    *cl;
	playerState_t   *ps;
	int statusLength;
	int playerLength;
	char infostring[MAX_INFO_STRING];

	// ignore if we are in single player
	if ( Cvar_VariableValue( "g_gametype" ) == GT_SINGLE_PLAYER ) {
		return;
	}

	// DHM - Nerve
#ifdef UPDATE_SERVER
	return;
#endif

	strcpy( infostring, Cvar_InfoString( CVAR_SERVERINFO ) );

	// echo back the parameter to status. so master servers can use it as a challenge
	// to prevent timed spoofed reply packets that add ghost servers
	Info_SetValueForKey( infostring, "challenge", Cmd_Argv( 1 ) );

	// add "demo" to the sv_keywords if restricted
	if ( Cvar_VariableValue( "fs_restrict" ) ) {
		char keywords[MAX_INFO_STRING];

		Com_sprintf( keywords, sizeof( keywords ), "demo %s",
					 Info_ValueForKey( infostring, "sv_keywords" ) );
		Info_SetValueForKey( infostring, "sv_keywords", keywords );
	}

	status[0] = 0;
	statusLength = 0;

	for ( i = 0 ; i < sv_maxclients->integer ; i++ ) {
		cl = &svs.clients[i];
		if ( cl->state >= CS_CONNECTED ) {
			ps = SV_GameClientNum( i );
			Com_sprintf( player, sizeof( player ), "%i %i \"%s\"\n",
						 ps->persistant[PERS_SCORE], cl->ping, cl->name );
			playerLength = strlen( player );
			if ( statusLength + playerLength >= sizeof( status ) ) {
				break;      // can't hold any more
			}
			strcpy( status + statusLength, player );
			statusLength += playerLength;
		}
	}

	NET_OutOfBandPrint( NS_SERVER, from, "statusResponse\n%s\n%s", infostring, status );
}

/*
================
SVC_Info

Responds with a short info message that should be enough to determine
if a user is interested in a server to do a full status
================
*/
void SVC_Info( netadr_t from ) {
	int i, count;
	char    *gamedir;
	char infostring[MAX_INFO_STRING];

	// ignore if we are in single player
	if ( Cvar_VariableValue( "g_gametype" ) == GT_SINGLE_PLAYER ) {
		return;
	}

	// don't count privateclients
	count = 0;
	for ( i = sv_privateClients->integer ; i < sv_maxclients->integer ; i++ ) {
		if ( svs.clients[i].state >= CS_CONNECTED ) {
			count++;
		}
	}

	infostring[0] = 0;

	// echo back the parameter to status. so servers can use it as a challenge
	// to prevent timed spoofed reply packets that add ghost servers
	Info_SetValueForKey( infostring, "challenge", Cmd_Argv( 1 ) );

	Info_SetValueForKey( infostring, "protocol", va( "%i", PROTOCOL_VERSION ) );
	Info_SetValueForKey( infostring, "hostname", sv_hostname->string );
	Info_SetValueForKey( infostring, "mapname", sv_mapname->string );
	Info_SetValueForKey( infostring, "clients", va( "%i", count ) );
	Info_SetValueForKey( infostring, "sv_maxclients",
						 va( "%i", sv_maxclients->integer - sv_privateClients->integer ) );
	Info_SetValueForKey( infostring, "gametype", va( "%i", sv_gametype->integer ) );
        //fretn
	Info_SetValueForKey( infostring, "coop", va( "%i", sv_coop->integer ) );
	Info_SetValueForKey( infostring, "pure", va( "%i", sv_pure->integer ) );

	if ( sv_minPing->integer ) {
		Info_SetValueForKey( infostring, "minPing", va( "%i", sv_minPing->integer ) );
	}
	if ( sv_maxPing->integer ) {
		Info_SetValueForKey( infostring, "maxPing", va( "%i", sv_maxPing->integer ) );
	}
	gamedir = Cvar_VariableString( "fs_game" );
	if ( *gamedir ) {
		Info_SetValueForKey( infostring, "game", gamedir );
	}
	Info_SetValueForKey( infostring, "sv_allowAnonymous", va( "%i", sv_allowAnonymous->integer ) );

	// Rafael gameskill
	Info_SetValueForKey( infostring, "gameskill", va( "%i", sv_gameskill->integer ) );
	// done

	NET_OutOfBandPrint( NS_SERVER, from, "infoResponse\n%s", infostring );
}

/*
================
SVC_Status

Responds with all the info that qplug or qspy can see about the server
and all connected players.  Used for getting detailed information after
the simple info query.
================
*/
void SVC_Status( netadr_t from, const Cmd::Args& args )
{
	char          player[ 1024 ];
	char          status[ MAX_MSGLEN ];
	int           i;
	client_t      *cl;
	playerState_t *ps;
	int           statusLength;
	int           playerLength;
	char          infostring[ MAX_INFO_STRING ];

	//bani - bugtraq 12534
	if ( args.Argc() > 1 && !SV_VerifyChallenge( args.Argv(1).c_str() ) )
	{
		return;
	}

	Q_strncpyz( infostring, Cvar_InfoString( CVAR_SERVERINFO, false ), MAX_INFO_STRING );

	if ( args.Argc() > 1 )
	{
		// echo back the parameter to status. so master servers can use it as a challenge
		// to prevent timed spoofed reply packets that add ghost servers
		Info_SetValueForKey( infostring, "challenge", args.Argv(1).c_str(), false );
	}

	status[ 0 ] = 0;
	statusLength = 0;

	for ( i = 0; i < sv_maxclients->integer; i++ )
	{
		cl = &svs.clients[ i ];

		if ( cl->state >= CS_CONNECTED )
		{
			ps = SV_GameClientNum( i );
			Com_sprintf( player, sizeof( player ), "%i %i \"%s\"\n", ps->persistant[ PERS_SCORE ], cl->ping, cl->name );
			playerLength = strlen( player );

			if ( statusLength + playerLength >= (int) sizeof( status ) )
			{
				break; // can't hold any more
			}

			strcpy( status + statusLength, player );
			statusLength += playerLength;
		}
	}

	NET_OutOfBandPrint( NS_SERVER, from, "statusResponse\n%s\n%s", infostring, status );
}

/*
=================
SV_GetChallenge

A "getchallenge" OOB command has been received
Returns a challenge number that can be used
in a subsequent connectResponse command.
We do this to prevent denial of service attacks that
flood the server with invalid connection IPs.  With a
challenge, they must give a valid IP address.

If we are authorizing, a challenge request will cause a packet
to be sent to the authorize server.

When an authorizeip is returned, a challenge response will be
sent to that ip.
=================
*/
void SV_GetChallenge( netadr_t from ) {
	int		i;
	int		oldest;
	int		oldestTime;
	challenge_t	*challenge;

	// ignore if we are in single player
	/*
	if ( Cvar_VariableValue( "g_gametype" ) == GT_SINGLE_PLAYER || Cvar_VariableValue("ui_singlePlayerActive")) {
		return;
	}
	*/
	if (Cvar_VariableValue("ui_singlePlayerActive"))
	{
		return;
	}

	oldest = 0;
	oldestTime = 0x7fffffff;

	// see if we already have a challenge for this ip
	challenge = &svs.challenges[0];
	for (i = 0 ; i < MAX_CHALLENGES ; i++, challenge++) {
		if ( !challenge->connected && NET_CompareAdr( from, challenge->adr ) ) {
			break;
		}
		if ( challenge->time < oldestTime ) {
			oldestTime = challenge->time;
			oldest = i;
		}
	}

	if (i == MAX_CHALLENGES) {
		// this is the first time this client has asked for a challenge
		challenge = &svs.challenges[oldest];

		challenge->challenge = ( (rand() << 16) ^ rand() ) ^ svs.time;
		challenge->adr = from;
		challenge->firstTime = svs.time;
		challenge->time = svs.time;
		challenge->connected = qfalse;
		i = oldest;
	}

	// if they are on a lan address, send the challengeResponse immediately
	if ( Sys_IsLANAddress( from ) ) {
		challenge->pingTime = svs.time;
		NET_OutOfBandPrint( NS_SERVER, from, "challengeResponse %i", challenge->challenge );
		return;
	}
}