/*
* Created on 15-Jun-2004
* Created by Paul Gardner
* Copyright (C) 2004, 2005, 2006 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.net.upnp.impl.services;
import java.util.*;
import org.gudy.azureus2.core3.util.*;
import com.aelitis.net.upnp.*;
import com.aelitis.net.upnp.impl.UPnPImpl;
import com.aelitis.net.upnp.impl.device.UPnPRootDeviceImpl;
import com.aelitis.net.upnp.services.UPnPWANConnection;
import com.aelitis.net.upnp.services.UPnPWANConnectionListener;
import com.aelitis.net.upnp.services.UPnPWANConnectionPortMapping;
/**
* @author parg
*
*/
public class
UPnPSSWANConnectionImpl
implements UPnPWANConnection
{
private static AEMonitor class_mon = new AEMonitor( "UPnPSSWANConnection" );
private static List services = new ArrayList();
static{
SimpleTimer.addPeriodicEvent(
"UPnPSSWAN:checker",
10*60*1000,
new TimerEventPerformer() {
public void perform( TimerEvent ev ) {
try{
List to_check = new ArrayList();
try{
class_mon.enter();
Iterator it = services.iterator();
while( it.hasNext()){
UPnPSSWANConnectionImpl s = (UPnPSSWANConnectionImpl)it.next();
if ( s.getGenericService().getDevice().getRootDevice().isDestroyed()){
it.remove();
}else{
to_check.add( s );
}
}
}finally{
class_mon.exit();
}
for (int i=0;i<to_check.size();i++){
try{
((UPnPSSWANConnectionImpl)to_check.get(i)).checkMappings();
}catch( Throwable e ){
//Debug.printStackTrace(e);
}
}
}catch( Throwable e ){
Debug.printStackTrace(e);
}
}
}
);
}
private UPnPServiceImpl service;
private List mappings = new ArrayList();
private List listeners = new ArrayList();
private boolean recheck_mappings = true;
// start off true to avoid logging first of repetitive failures
private boolean last_mapping_check_failed = true;
protected
UPnPSSWANConnectionImpl(
UPnPServiceImpl _service )
{
service = _service;
try{
class_mon.enter();
services.add( this );
}finally{
class_mon.exit();
}
}
public int
getCapabilities()
{
String device_name = service.getDevice().getRootDevice().getDevice().getFriendlyName();
int capabilities = CAP_ALL;
if ( device_name.equals( "WRT54G" )){
capabilities = CAP_ALL & ~CAP_UDP_TCP_SAME_PORT;
}
return( capabilities );
}
public UPnPService
getGenericService()
{
return( service );
}
public String[]
getStatusInfo()
throws UPnPException
{
UPnPAction act = service.getAction( "GetStatusInfo" );
if ( act == null ){
log( "Action 'GetStatusInfo' not supported, binding not established" );
throw( new UPnPException( "GetStatusInfo not supported" ));
}else{
UPnPActionInvocation inv = act.getInvocation();
UPnPActionArgument[] args = inv.invoke();
String connection_status = null;
String connection_error = null;
String uptime = null;
for (int i=0;i<args.length;i++){
UPnPActionArgument arg = args[i];
String name = arg.getName();
if ( name.equalsIgnoreCase("NewConnectionStatus")){
connection_status = arg.getValue();
}else if ( name.equalsIgnoreCase("NewLastConnectionError")){
connection_error = arg.getValue();
}else if ( name.equalsIgnoreCase("NewUptime")){
uptime = arg.getValue();
}
}
return( new String[]{ connection_status, connection_error, uptime });
}
}
public void
periodicallyRecheckMappings(
boolean on )
{
recheck_mappings = on;
}
protected void
checkMappings()
throws UPnPException
{
if ( !recheck_mappings ){
return;
}
List mappings_copy;
try{
class_mon.enter();
mappings_copy = new ArrayList( mappings );
}finally{
class_mon.exit();
}
UPnPWANConnectionPortMapping[] current = getPortMappings();
Iterator it = mappings_copy.iterator();
while( it.hasNext()){
portMapping mapping = (portMapping)it.next();
for (int j=0;j<current.length;j++){
UPnPWANConnectionPortMapping c = current[j];
if ( c.getExternalPort() == mapping.getExternalPort() &&
c.isTCP() == mapping.isTCP()){
it.remove();
break;
}
}
}
boolean log = false;
if ( mappings_copy.size() > 0 ){
if ( !last_mapping_check_failed ){
last_mapping_check_failed = true;
log = true;
}
}else{
last_mapping_check_failed = false;
}
it = mappings_copy.iterator();
while( it.hasNext()){
portMapping mapping = (portMapping)it.next();
try{
// some routers appear to continually fail to report the mappings - avoid
// reporting this
if ( log ){
log( "Re-establishing mapping " + mapping.getString());
}
addPortMapping( mapping.isTCP(), mapping.getExternalPort(), mapping.getDescription());
}catch( Throwable e ){
Debug.printStackTrace(e);
}
}
}
public void
addPortMapping(
boolean tcp, // false -> UDP
int port,
String description )
throws UPnPException
{
UPnPAction act = service.getAction( "AddPortMapping" );
if ( act == null ){
log( "Action 'AddPortMapping' not supported, binding not established" );
}else{
UPnPActionInvocation add_inv = act.getInvocation();
add_inv.addArgument( "NewRemoteHost", "" ); // "" = wildcard for hosts, 0 = wildcard for ports
add_inv.addArgument( "NewExternalPort", "" + port );
add_inv.addArgument( "NewProtocol", tcp?"TCP":"UDP" );
add_inv.addArgument( "NewInternalPort", "" + port );
add_inv.addArgument( "NewInternalClient", service.getDevice().getRootDevice().getLocalAddress().getHostAddress());
add_inv.addArgument( "NewEnabled", "1" );
add_inv.addArgument( "NewPortMappingDescription", description );
add_inv.addArgument( "NewLeaseDuration", "0" ); // 0 -> infinite (?)
boolean ok = false;
try{
add_inv.invoke();
ok = true;
}catch( UPnPException original_error ){
// some routers won't add properly if the mapping's already there
try{
log("Problem when adding port mapping - will try to see if an existing mapping is in the way");
deletePortMapping(tcp, port);
}catch( Throwable e ){
throw( original_error );
}
add_inv.invoke();
ok = true;
}finally{
((UPnPRootDeviceImpl)service.getDevice().getRootDevice()).portMappingResult(ok);
for (int i=0;i<listeners.size();i++){
UPnPWANConnectionListener listener = (UPnPWANConnectionListener)listeners.get(i);
try{
listener.mappingResult( this, ok );
}catch( Throwable e){
Debug.printStackTrace(e);
}
}
}
try{
class_mon.enter();
Iterator it = mappings.iterator();
while( it.hasNext()){
portMapping m = (portMapping)it.next();
if ( m.getExternalPort() == port && m.isTCP() == tcp ){
it.remove();
}
}
mappings.add( new portMapping( port, tcp, "", description ));
}finally{
class_mon.exit();
}
}
}
public void
deletePortMapping(
boolean tcp,
int port )
throws UPnPException
{
UPnPAction act = service.getAction( "DeletePortMapping" );
if ( act == null ){
log( "Action 'DeletePortMapping' not supported, binding not removed" );
}else{
boolean mapping_found = false;
try{
class_mon.enter();
Iterator it = mappings.iterator();
while( it.hasNext()){
portMapping mapping = (portMapping)it.next();
if ( mapping.getExternalPort() == port &&
mapping.isTCP() == tcp ){
it.remove();
mapping_found = true;
break;
}
}
}finally{
class_mon.exit();
}
try{
long start = SystemTime.getCurrentTime();
UPnPActionInvocation inv = act.getInvocation();
inv.addArgument( "NewRemoteHost", "" ); // "" = wildcard for hosts, 0 = wildcard for ports
inv.addArgument( "NewProtocol", tcp?"TCP":"UDP" );
inv.addArgument( "NewExternalPort", "" + port );
inv.invoke();
long elapsed = SystemTime.getCurrentTime() - start;
if ( elapsed > 4000 ){
String info = service.getDevice().getRootDevice().getInfo();
((UPnPImpl)service.getDevice().getRootDevice().getUPnP()).logAlert(
"UPnP device '" + info + "' is taking a long time to release port mappings, consider disabling this via the UPnP configuration.",
false,
UPnPLogListener.TYPE_ONCE_EVER );
}
}catch( UPnPException e ){
// only bitch about the failure if we believed we mapped it in the first place
if ( mapping_found ){
throw( e );
}else{
log( "Removal of mapping failed but not established explicitly so ignoring error" );
}
}
}
}
public UPnPWANConnectionPortMapping[]
getPortMappings()
throws UPnPException
{
boolean ok = true;
try{
//UPnPStateVariable noe = service.getStateVariable("PortMappingNumberOfEntries");
//System.out.println( "NOE = " + noe.getValue());
int entries = 0; //Integer.parseInt( noe.getValue());
// some routers (e.g. Gudy's) return 0 here whatever!
// In this case take mindless approach
// hmm, even for my router the state variable isn't accurate...
UPnPAction act = service.getAction( "GetGenericPortMappingEntry" );
if ( act == null ){
log( "Action 'GetGenericPortMappingEntry' not supported, can't enumerate bindings" );
return( new UPnPWANConnectionPortMapping[0] );
}else{
List res = new ArrayList();
// I've also seen some routers loop here rather than failing when the index gets too large (they
// seem to keep returning the last entry) - check for a duplicate entry and exit if found
portMapping prev_mapping = null;
for (int i=0;i<(entries==0?512:entries);i++){
UPnPActionInvocation inv = act.getInvocation();
inv.addArgument( "NewPortMappingIndex", "" + i );
try{
UPnPActionArgument[] outs = inv.invoke();
int port = 0;
boolean tcp = false;
String internal_host = null;
String description = "";
for (int j=0;j<outs.length;j++){
UPnPActionArgument out = outs[j];
String out_name = out.getName();
if ( out_name.equalsIgnoreCase("NewExternalPort")){
port = Integer.parseInt( out.getValue());
}else if ( out_name.equalsIgnoreCase( "NewProtocol" )){
tcp = out.getValue().equalsIgnoreCase("TCP");
}else if ( out_name.equalsIgnoreCase( "NewInternalClient" )){
internal_host = out.getValue();
}else if ( out_name.equalsIgnoreCase( "NewPortMappingDescription" )){
description = out.getValue();
}
}
if ( prev_mapping != null ){
if ( prev_mapping.getExternalPort() == port &&
prev_mapping.isTCP() == tcp ){
// repeat, get out
break;
}
}
prev_mapping = new portMapping( port, tcp, internal_host, description );
res.add( prev_mapping );
}catch( UPnPException e ){
if ( entries == 0 ){
break;
}
ok = false;
throw(e);
}
}
UPnPWANConnectionPortMapping[] res2= new UPnPWANConnectionPortMapping[res.size()];
res.toArray( res2 );
return( res2 );
}
}finally{
for (int i=0;i<listeners.size();i++){
UPnPWANConnectionListener listener = (UPnPWANConnectionListener)listeners.get(i);
try{
listener.mappingsReadResult( this, ok );
}catch( Throwable e){
Debug.printStackTrace(e);
}
}
}
}
public String
getExternalIPAddress()
throws UPnPException
{
UPnPAction act = service.getAction( "GetExternalIPAddress" );
if ( act == null ){
log( "Action 'GetExternalIPAddress' not supported, binding not established" );
throw( new UPnPException( "GetExternalIPAddress not supported" ));
}else{
UPnPActionInvocation inv = act.getInvocation();
UPnPActionArgument[] args = inv.invoke();
String ip = null;
for (int i=0;i<args.length;i++){
UPnPActionArgument arg = args[i];
String name = arg.getName();
if ( name.equalsIgnoreCase("NewExternalIPAddress")){
ip = arg.getValue();
}
}
return( ip );
}
}
protected void
log(
String str )
{
service.getDevice().getRootDevice().getUPnP().log( str );
}
public void
addListener(
UPnPWANConnectionListener listener )
{
listeners.add( listener );
}
public void
removeListener(
UPnPWANConnectionListener listener )
{
listeners.add( listener );
}
protected class
portMapping
implements UPnPWANConnectionPortMapping
{
protected int external_port;
protected boolean tcp;
protected String internal_host;
protected String description;
protected
portMapping(
int _external_port,
boolean _tcp,
String _internal_host,
String _description )
{
external_port = _external_port;
tcp = _tcp;
internal_host = _internal_host;
description = _description;
}
public boolean
isTCP()
{
return( tcp );
}
public int
getExternalPort()
{
return( external_port );
}
public String
getInternalHost()
{
return( internal_host );
}
public String
getDescription()
{
return( description );
}
protected String
getString()
{
return( getDescription() + " [" + getExternalPort() + ":" + (isTCP()?"TCP":"UDP") + "]");
}
}
}
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