refine #171

Conflicts:
	src/main/scala/com/github/shadowsocks/ShadowsocksNatService.scala

build.sbt

@@ -22,7 +22,7 @@ libraryDependencies ++= Seq(
   "dnsjava" % "dnsjava" % "2.1.5",
   "com.github.kevinsawicki" % "http-request" % "5.6",
   "commons-net" % "commons-net" % "3.3",
-  "com.google.zxing" % "android-integration" % "2.2"
+  "com.google.zxing" % "android-integration" % "3.1.0"
 )
 
 libraryDependencies ++= Seq(

src/main/AndroidManifest.xml

@@ -1,7 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.github.shadowsocks"
-    android:versionCode="89"
+    android:versionCode="91"
-    android:versionName="2.5.1">
+    android:versionName="2.5.3">
 
   <uses-permission android:name="android.permission.INTERNET"/>
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

src/main/res/values-zh/strings.xml

@@ -69,6 +69,9 @@
   <string name="flushing">刷新中...</string>
   <string name="add_profile">添加配置文件</string>
 
+  <string name="enable_nat">启用 NAT 模式.</string>
+  <string name="disable_nat">禁用 NAT 模式.</string>
+
   <string name="udp_dns">UDP 转发</string>
   <string name="udp_dns_summary">由远程服务器转发 UDP 协议的数据包</string>
 

src/main/res/values/strings.xml

@@ -59,6 +59,8 @@
   <string name="stop">Stop the service</string>
   <string name="stopping">Shutting down...</string>
   <string name="vpn_error">Error: \"%s\".</string>
+  <string name="enable_nat">Turn on NAT mode.</string>
+  <string name="disable_nat">Turn off NAT mode.</string>
 
   <!-- alert category -->
   <string name="ok_iknow">OK</string>

src/main/scala/com/github/shadowsocks/Shadowsocks.scala

@@ -40,6 +40,7 @@ package com.github.shadowsocks
 
 import java.util
 import java.io.{OutputStream, InputStream, ByteArrayInputStream, ByteArrayOutputStream, IOException, FileOutputStream}
+import java.util.Locale
 
 import android.app.backup.BackupManager
 import android.app.{Activity, AlertDialog, ProgressDialog}
@@ -51,6 +52,7 @@ import android.net.{Uri, VpnService}
 import android.os._
 import android.preference._
 import android.util.{DisplayMetrics, Log}
+import android.view.View.OnLongClickListener
 import android.view._
 import android.webkit.{WebView, WebViewClient}
 import android.widget._
@@ -67,7 +69,6 @@ import net.simonvt.menudrawer.MenuDrawer
 
 import scala.collection.mutable.{ArrayBuffer, ListBuffer}
 import scala.concurrent.ops._
-import scala.ref.WeakReference
 
 class ProfileIconDownloader(context: Context, connectTimeout: Int, readTimeout: Int)
   extends BaseImageDownloader(context, connectTimeout, readTimeout) {
@@ -325,8 +326,8 @@ class Shadowsocks
     val cmd = new ArrayBuffer[String]()
 
     for (task <- Array("ss-local", "ss-tunnel", "pdnsd", "redsocks", "tun2socks")) {
-      cmd.append("chmod 666 %s%s-nat.pid".format(Path.BASE, task))
+      cmd.append("chmod 666 %s%s-nat.pid".formatLocal(Locale.ENGLISH, Path.BASE, task))
-      cmd.append("chmod 666 %s%s-vpn.pid".format(Path.BASE, task))
+      cmd.append("chmod 666 %s%s-vpn.pid".formatLocal(Locale.ENGLISH, Path.BASE, task))
     }
     Console.runRootCommand(cmd.toArray)
     cmd.clear()
@@ -335,17 +336,17 @@ class Shadowsocks
       try {
         val pid_nat = scala.io.Source.fromFile(Path.BASE + task + "-nat.pid").mkString.trim.toInt
         val pid_vpn = scala.io.Source.fromFile(Path.BASE + task + "-vpn.pid").mkString.trim.toInt
-        cmd.append("kill -9 %d".format(pid_nat))
+        cmd.append("kill -9 %d".formatLocal(Locale.ENGLISH, pid_nat))
-        cmd.append("kill -9 %d".format(pid_vpn))
+        cmd.append("kill -9 %d".formatLocal(Locale.ENGLISH, pid_vpn))
         Process.killProcess(pid_nat)
         Process.killProcess(pid_vpn)
       } catch {
         case e: Throwable => Log.e(Shadowsocks.TAG, "unable to kill " + task)
       }
-      cmd.append("rm -f %s%s-nat.pid".format(Path.BASE, task))
+      cmd.append("rm -f %s%s-nat.pid".formatLocal(Locale.ENGLISH, Path.BASE, task))
-      cmd.append("rm -f %s%s-nat.conf".format(Path.BASE, task))
+      cmd.append("rm -f %s%s-nat.conf".formatLocal(Locale.ENGLISH, Path.BASE, task))
-      cmd.append("rm -f %s%s-vpn.pid".format(Path.BASE, task))
+      cmd.append("rm -f %s%s-vpn.pid".formatLocal(Locale.ENGLISH, Path.BASE, task))
-      cmd.append("rm -f %s%s-vpn.conf".format(Path.BASE, task))
+      cmd.append("rm -f %s%s-vpn.conf".formatLocal(Locale.ENGLISH, Path.BASE, task))
     }
     Console.runCommand(cmd.toArray)
     Console.runRootCommand(cmd.toArray)
@@ -499,13 +500,30 @@ class Shadowsocks
     getActionBar.setDisplayShowTitleEnabled(false)
     getActionBar.setDisplayShowCustomEnabled(true)
     getActionBar.setIcon(R.drawable.ic_stat_shadowsocks)
+    title.setOnLongClickListener(new OnLongClickListener {
+      override def onLongClick(v: View): Boolean = {
+        if (Utils.isLollipopOrAbove && bgService != null
+          && (bgService.getState == State.INIT || bgService.getState == State.STOPPED)) {
+          val natEnabled = status.getBoolean(Key.isNAT, false)
+          status.edit().putBoolean(Key.isNAT, !natEnabled).commit()
+          if (!natEnabled) {
+            Toast.makeText(getBaseContext, R.string.enable_nat, Toast.LENGTH_LONG).show()
+          } else {
+            Toast.makeText(getBaseContext, R.string.disable_nat, Toast.LENGTH_LONG).show()
+          }
+          true
+        } else {
+          false
+        }
+      }
+    })
 
     // Register broadcast receiver
     registerReceiver(preferenceReceiver, new IntentFilter(Action.UPDATE_PREFS))
 
     // Bind to the service
     spawn {
-      val isRoot = Console.isRoot
+      val isRoot = (!Utils.isLollipopOrAbove || status.getBoolean(Key.isNAT, false)) && Console.isRoot
       handler.post(new Runnable {
         override def run() {
           status.edit.putBoolean(Key.isRoot, isRoot).commit()
@@ -575,6 +593,9 @@ class Shadowsocks
             h.postDelayed(new Runnable() {
               def run() {
                 val integrator = new IntentIntegrator(Shadowsocks.this)
+                val list = new java.util.ArrayList(IntentIntegrator.TARGET_ALL_KNOWN)
+                list.add("tw.com.quickmark")
+                integrator.setTargetApplications(list)
                 integrator.initiateScan()
                 h.sendEmptyMessage(0)
               }
@@ -652,7 +673,7 @@ class Shadowsocks
     if (!profile.isDefined) return false
 
     new AlertDialog.Builder(this)
-      .setMessage(String.format(getString(R.string.remove_profile), profile.get.name))
+      .setMessage(String.format(Locale.ENGLISH, getString(R.string.remove_profile), profile.get.name))
       .setCancelable(false)
       .setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
       override def onClick(dialog: DialogInterface, i: Int) = dialog.cancel()
@@ -820,7 +841,7 @@ class Shadowsocks
     val ab = new ArrayBuffer[String]
     ab.append("mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system")
     for (executable <- Shadowsocks.EXECUTABLES) {
-      ab.append("cp %s%s /system/bin/".format(Path.BASE, executable))
+      ab.append("cp %s%s /system/bin/".formatLocal(Locale.ENGLISH, Path.BASE, executable))
       ab.append("chmod 755 /system/bin/" + executable)
       ab.append("chown root:shell /system/bin/" + executable)
     }
@@ -956,7 +977,7 @@ class Shadowsocks
     }
 
     new AlertDialog.Builder(this)
-      .setTitle(getString(R.string.about_title).format(versionName))
+      .setTitle(getString(R.string.about_title).formatLocal(Locale.ENGLISH, versionName))
       .setCancelable(false)
       .setNegativeButton(getString(R.string.ok_iknow), new DialogInterface.OnClickListener() {
       override def onClick(dialog: DialogInterface, id: Int) {
@@ -1001,7 +1022,7 @@ class Shadowsocks
                   .setDuration(Configuration.DURATION_LONG)
                   .build()
                 Crouton
-                  .makeText(Shadowsocks.this, getString(R.string.vpn_error).format(m), style)
+                  .makeText(Shadowsocks.this, getString(R.string.vpn_error).formatLocal(Locale.ENGLISH, m), style)
                   .setConfiguration(config)
                   .show()
               }

src/main/scala/com/github/shadowsocks/ShadowsocksNatService.scala

@@ -41,6 +41,7 @@ package com.github.shadowsocks
 
 import java.io.File
 import java.lang.reflect.{InvocationTargetException, Method}
+import java.util.Locale
 
 import android.app.{Notification, NotificationManager, PendingIntent, Service}
 import android.content._
@@ -48,7 +49,7 @@ import android.content.pm.{PackageInfo, PackageManager}
 import android.net.{Network, ConnectivityManager}
 import android.os._
 import android.support.v4.app.NotificationCompat
-import android.util.Log
+import android.util.{SparseArray, Log}
 import android.widget.Toast
 import com.github.shadowsocks.aidl.Config
 import com.github.shadowsocks.utils._
@@ -71,6 +72,9 @@ class ShadowsocksNatService extends Service with BaseService {
   private val mStartForegroundSignature = Array[Class[_]](classOf[Int], classOf[Notification])
   private val mStopForegroundSignature = Array[Class[_]](classOf[Boolean])
   private val mSetForegroundSignature = Array[Class[_]](classOf[Boolean])
+  private val mSetForegroundArgs = new Array[AnyRef](1)
+  private val mStartForegroundArgs = new Array[AnyRef](2)
+  private val mStopForegroundArgs = new Array[AnyRef](1)
 
   var closeReceiver: BroadcastReceiver = null
   var connReceiver: BroadcastReceiver = null
@@ -82,32 +86,61 @@ class ShadowsocksNatService extends Service with BaseService {
   private var mSetForeground: Method = null
   private var mStartForeground: Method = null
   private var mStopForeground: Method = null
-  private var mSetForegroundArgs = new Array[AnyRef](1)
-  private var mStartForegroundArgs = new Array[AnyRef](2)
-  private var mStopForegroundArgs = new Array[AnyRef](1)
 
   private lazy val application = getApplication.asInstanceOf[ShadowsocksApplication]
 
-  def setDnsForAllNetwork(dns: String) {
+  private val dnsAddressCache = new SparseArray[String]
+
+  def getNetId(network: Network): Int = {
+    network.getClass.getDeclaredField("netId").get(network).asInstanceOf[Int]
+  }
+
+  def restoreDnsForAllNetwork() {
     val manager = getSystemService(Context.CONNECTIVITY_SERVICE).asInstanceOf[ConnectivityManager]
     val networks = manager.getAllNetworks
     val cmdBuf = new ArrayBuffer[String]()
     networks.foreach(network => {
-      val networkInfo = manager.getNetworkInfo(network)
+      val netId = getNetId(network)
-      if (networkInfo.isAvailable) {
+      val oldDns = dnsAddressCache.get(netId)
-        val netId = network.getClass.getDeclaredField("netId").get(network).asInstanceOf[Int]
+      if (oldDns != null) {
-        cmdBuf.append("ndc resolver setnetdns %d \"\" %s".format(netId, dns))
+        cmdBuf.append("ndc resolver setnetdns %d \"\" %s".formatLocal(Locale.ENGLISH, netId, oldDns))
+        dnsAddressCache.remove(netId)
       }
     })
-    Console.runRootCommand(cmdBuf.toArray)
+    if (cmdBuf.nonEmpty) Console.runRootCommand(cmdBuf.toArray)
   }
 
-  def setupDns() = {
+  def setDnsForAllNetwork(dns: String) {
+    val manager = getSystemService(Context.CONNECTIVITY_SERVICE).asInstanceOf[ConnectivityManager]
+    val networks = manager.getAllNetworks
+    if (networks == null) return
+
+    val cmdBuf = new ArrayBuffer[String]()
+    networks.foreach(network => {
+      val networkInfo = manager.getNetworkInfo(network)
+      if (networkInfo == null) return
+      if (networkInfo.isConnected) {
+        val netId = getNetId(network)
+        val curDnsList = manager.getLinkProperties(network).getDnsServers
+        if (curDnsList != null) {
+          import scala.collection.JavaConverters._
+          val curDns = curDnsList.asScala.map(ip => ip.getHostAddress).mkString(" ")
+          if (curDns != dns) {
+            dnsAddressCache.put(netId, curDns)
+            cmdBuf.append("ndc resolver setnetdns %d \"\" %s".formatLocal(Locale.ENGLISH, netId, dns))
+          }
+        }
+      }
+    })
+    if (cmdBuf.nonEmpty) Console.runRootCommand(cmdBuf.toArray)
+  }
+
+  def setupDns() {
     setDnsForAllNetwork("127.0.0.1")
   }
 
   def resetDns() = {
-    setDnsForAllNetwork("114.114.114.114 8.8.8.8 208.67.222.222")
+    restoreDnsForAllNetwork()
   }
 
   def flushDns() {
@@ -119,7 +152,7 @@ class ShadowsocksNatService extends Service with BaseService {
         val networkInfo = manager.getNetworkInfo(network)
         if (networkInfo.isAvailable) {
           val netId = network.getClass.getDeclaredField("netId").get(network).asInstanceOf[Int]
-          cmdBuf.append("ndc resolver flushnet %d".format(netId))
+          cmdBuf.append("ndc resolver flushnet %d".formatLocal(Locale.ENGLISH, netId))
         }
       })
       Console.runRootCommand(cmdBuf.toArray)
@@ -159,7 +192,7 @@ class ShadowsocksNatService extends Service with BaseService {
     }
 
     val conf = ConfigUtils
-      .SHADOWSOCKS.format(config.proxy, config.remotePort, config.localPort,
+      .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, config.localPort,
         config.sitekey, config.encMethod, 10)
     ConfigUtils.printToFile(new File(Path.BASE + "ss-local-nat.conf"))(p => {
       p.println(conf)
@@ -183,7 +216,7 @@ class ShadowsocksNatService extends Service with BaseService {
   def startTunnel() {
     if (config.isUdpDns) {
       val conf = ConfigUtils
-        .SHADOWSOCKS.format(config.proxy, config.remotePort, 8153,
+        .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, 8153,
           config.sitekey, config.encMethod, 10)
       ConfigUtils.printToFile(new File(Path.BASE + "ss-tunnel-nat.conf"))(p => {
         p.println(conf)
@@ -211,7 +244,7 @@ class ShadowsocksNatService extends Service with BaseService {
 
     } else {
       val conf = ConfigUtils
-        .SHADOWSOCKS.format(config.proxy, config.remotePort, 8163,
+        .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, 8163,
           config.sitekey, config.encMethod, 10)
       ConfigUtils.printToFile(new File(Path.BASE + "ss-tunnel-nat.conf"))(p => {
         p.println(conf)
@@ -232,10 +265,10 @@ class ShadowsocksNatService extends Service with BaseService {
   def startDnsDaemon() {
     val conf = if (Utils.isLollipopOrAbove) {
       ConfigUtils
-        .PDNSD_BYPASS.format("127.0.0.1", 53, Path.BASE + "pdnsd-nat.pid", getString(R.string.exclude), 8163)
+        .PDNSD_BYPASS.formatLocal(Locale.ENGLISH, "127.0.0.1", 53, Path.BASE + "pdnsd-nat.pid", getString(R.string.exclude), 8163)
     } else {
       ConfigUtils
-        .PDNSD_BYPASS.format("127.0.0.1", 8153, Path.BASE + "pdnsd-nat.pid", getString(R.string.exclude), 8163)
+        .PDNSD_BYPASS.formatLocal(Locale.ENGLISH, "127.0.0.1", 8153, Path.BASE + "pdnsd-nat.pid", getString(R.string.exclude), 8163)
     }
     ConfigUtils.printToFile(new File(Path.BASE + "pdnsd-nat.conf"))(p => {
        p.println(conf)
@@ -265,9 +298,9 @@ class ShadowsocksNatService extends Service with BaseService {
   }
 
   def startRedsocksDaemon() {
-    val conf = ConfigUtils.REDSOCKS.format(config.localPort)
+    val conf = ConfigUtils.REDSOCKS.formatLocal(Locale.ENGLISH, config.localPort)
     val cmd = Path.BASE + "redsocks -p %sredsocks-nat.pid -c %sredsocks-nat.conf"
-      .format(Path.BASE, Path.BASE)
+      .formatLocal(Locale.ENGLISH, Path.BASE, Path.BASE)
     ConfigUtils.printToFile(new File(Path.BASE + "redsocks-nat.conf"))(p => {
       p.println(conf)
     })
@@ -360,7 +393,7 @@ class ShadowsocksNatService extends Service with BaseService {
     val cmd = new ArrayBuffer[String]()
 
     for (task <- Array("ss-local", "ss-tunnel", "pdnsd", "redsocks")) {
-      cmd.append("chmod 666 %s%s-nat.pid".format(Path.BASE, task))
+      cmd.append("chmod 666 %s%s-nat.pid".formatLocal(Locale.ENGLISH, Path.BASE, task))
     }
     Console.runRootCommand(cmd.toArray)
     cmd.clear()
@@ -368,13 +401,13 @@ class ShadowsocksNatService extends Service with BaseService {
     for (task <- Array("ss-local", "ss-tunnel", "pdnsd", "redsocks")) {
       try {
         val pid = scala.io.Source.fromFile(Path.BASE + task + "-nat.pid").mkString.trim.toInt
-        cmd.append("kill -9 %d".format(pid))
+        cmd.append("kill -9 %d".formatLocal(Locale.ENGLISH, pid))
         Process.killProcess(pid)
       } catch {
         case e: Throwable => Log.e(TAG, "unable to kill " + task)
       }
-      cmd.append("rm -f %s%s-nat.pid".format(Path.BASE, task))
+      cmd.append("rm -f %s%s-nat.pid".formatLocal(Locale.ENGLISH, Path.BASE, task))
-      cmd.append("rm -f %s%s-nat.conf".format(Path.BASE, task))
+      cmd.append("rm -f %s%s-nat.conf".formatLocal(Locale.ENGLISH, Path.BASE, task))
     }
 
     Console.runRootCommand(cmd.toArray)
@@ -476,7 +509,7 @@ class ShadowsocksNatService extends Service with BaseService {
     filter.addAction(Action.CLOSE)
     closeReceiver = new BroadcastReceiver() {
       def onReceive(p1: Context, p2: Intent) {
-        Toast.makeText(p1, R.string.stopping, Toast.LENGTH_SHORT)
+        Toast.makeText(p1, R.string.stopping, Toast.LENGTH_SHORT).show()
         stopRunner()
       }
     }
@@ -510,10 +543,6 @@ class ShadowsocksNatService extends Service with BaseService {
         // Clean up
         killProcesses()
 
-        // Set DNS
-        if (Utils.isLollipopOrAbove) setupDns()
-        flushDns()
-
         var resolved: Boolean = false
         if (!InetAddressUtils.isIPv4Address(config.proxy) &&
           !InetAddressUtils.isIPv6Address(config.proxy)) {
@@ -528,8 +557,13 @@ class ShadowsocksNatService extends Service with BaseService {
         }
 
         if (resolved && handleConnection) {
+
+          // Set DNS
+          if (Utils.isLollipopOrAbove) setupDns()
+          flushDns()
+
           notifyForegroundAlert(getString(R.string.forward_success),
-            getString(R.string.service_running).format(config.profileName))
+            getString(R.string.service_running).formatLocal(Locale.ENGLISH, config.profileName))
           changeState(State.CONNECTED)
         } else {
           changeState(State.STOPPED, getString(R.string.service_failed))

src/main/scala/com/github/shadowsocks/ShadowsocksRunnerActivity.scala

@@ -50,7 +50,8 @@ import com.github.shadowsocks.aidl.IShadowsocksService
 
 class ShadowsocksRunnerActivity extends Activity {
 
-  lazy val settings = PreferenceManager.getDefaultSharedPreferences(this)
+  private lazy val settings = PreferenceManager.getDefaultSharedPreferences(this)
+  private lazy val status = getSharedPreferences(Key.status, Context.MODE_PRIVATE)
 
   val handler = new Handler()
   val connection = new ServiceConnection {
@@ -72,10 +73,10 @@ class ShadowsocksRunnerActivity extends Activity {
 
   def isVpnEnabled: Boolean = {
     if (vpnEnabled < 0) {
-      vpnEnabled = if (!Console.isRoot) {
+      vpnEnabled = if ((!Utils.isLollipopOrAbove || status.getBoolean(Key.isNAT, false)) && Console.isRoot) {
-        1
-      } else {
         0
+      } else {
+        1
       }
     }
     if (vpnEnabled == 1) true else false

src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala

@@ -40,6 +40,7 @@
 package com.github.shadowsocks
 
 import java.io.File
+import java.util.Locale
 
 import android.app._
 import android.content._
@@ -107,7 +108,7 @@ class ShadowsocksVpnService extends VpnService with BaseService {
     }
 
     val conf = ConfigUtils
-      .SHADOWSOCKS.format(config.proxy, config.remotePort, config.localPort,
+      .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, config.localPort,
         config.sitekey, config.encMethod, 10)
     ConfigUtils.printToFile(new File(Path.BASE + "ss-local-vpn.conf"))(p => {
       p.println(conf)
@@ -130,7 +131,7 @@ class ShadowsocksVpnService extends VpnService with BaseService {
 
   def startDnsTunnel() = {
     val conf = ConfigUtils
-      .SHADOWSOCKS.format(config.proxy, config.remotePort, 8163,
+      .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, 8163,
         config.sitekey, config.encMethod, 10)
     ConfigUtils.printToFile(new File(Path.BASE + "ss-tunnel-vpn.conf"))(p => {
       p.println(conf)
@@ -150,9 +151,9 @@ class ShadowsocksVpnService extends VpnService with BaseService {
   def startDnsDaemon() {
     val conf = {
       if (Utils.isLollipopOrAbove) {
-        ConfigUtils.PDNSD_BYPASS.format("0.0.0.0", 8153, Path.BASE + "pdnsd-vpn.pid", getString(R.string.exclude), 8163)
+        ConfigUtils.PDNSD_BYPASS.formatLocal(Locale.ENGLISH, "0.0.0.0", 8153, Path.BASE + "pdnsd-vpn.pid", getString(R.string.exclude), 8163)
       } else {
-        ConfigUtils.PDNSD_LOCAL.format("0.0.0.0", 8163)
+        ConfigUtils.PDNSD_LOCAL.formatLocal(Locale.ENGLISH, "0.0.0.0", 8163)
       }
     }
     ConfigUtils.printToFile(new File(Path.BASE + "pdnsd-vpn.conf"))(p => {
@@ -182,7 +183,7 @@ class ShadowsocksVpnService extends VpnService with BaseService {
     builder
       .setSession(config.profileName)
       .setMtu(VPN_MTU)
-      .addAddress(PRIVATE_VLAN.format("1"), 24)
+      .addAddress(PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "1"), 24)
       .addDnsServer("8.8.8.8")
 
     if (Utils.isLollipopOrAbove) {
@@ -312,12 +313,12 @@ class ShadowsocksVpnService extends VpnService with BaseService {
       + "--tunmtu %d "
       + "--loglevel 3 "
       + "--pid %stun2socks-vpn.pid")
-      .format(PRIVATE_VLAN.format("2"), config.localPort, fd, VPN_MTU, Path.BASE)
+      .formatLocal(Locale.ENGLISH, PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "2"), config.localPort, fd, VPN_MTU, Path.BASE)
 
     if (config.isUdpDns)
       cmd += " --enable-udprelay"
     else
-      cmd += " --dnsgw %s:8153".format(PRIVATE_VLAN.format("1"))
+      cmd += " --dnsgw %s:8153".formatLocal(Locale.ENGLISH, PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "1"))
 
     if (Utils.isLollipopOrAbove) {
       cmd += " --fake-proc"

src/main/scala/com/github/shadowsocks/utils/Constants.scala

@@ -65,6 +65,7 @@ object Key {
 
   val proxied = "Proxyed"
 
+  val isNAT = "isNAT"
   val isRoot = "isRoot"
   val status = "status"
   val proxyedApps = "proxyedApps"