[tor-commits] [orbot/master] Fixes #236: Separate Constants For VPN, TOR and MAIN_APP

n8fr8 at torproject.org n8fr8 at torproject.org
Mon Jul 8 18:55:44 UTC 2019


commit 1c386959a340f8ba3d34e3fb2df95bfb6631935f
Author: sisbell <shane.isbell at gmail.com>
Date:   Mon Jul 1 00:57:31 2019 -0700

    Fixes #236: Separate Constants For VPN, TOR and MAIN_APP
---
 .../java/org/torproject/android/MainConstants.java |  15 +++
 .../org/torproject/android/OrbotMainActivity.java  |  20 ++-
 .../torproject/android/ui/AppManagerActivity.java  |   2 +
 .../ui/onboarding/BridgeWizardActivity.java        |   4 +-
 .../torproject/android/service/OrbotConstants.java |  15 +--
 .../org/torproject/android/service/TorService.java |   8 +-
 .../android/service/TorServiceConstants.java       |  47 +------
 .../android/service/util/TorServiceUtils.java      | 146 +--------------------
 .../android/service/vpn/OrbotVpnManager.java       |  15 +--
 .../android/service/vpn/PDNSDInstaller.java        |  26 ++--
 .../android/service/vpn/TorifiedApp.java           |   6 +-
 .../android/service/vpn/VpnConstants.java          |  14 ++
 .../torproject/android/service/vpn/VpnPrefs.java   |  15 +++
 .../torproject/android/service/vpn/VpnUtils.java   |  84 ++++++++++++
 14 files changed, 180 insertions(+), 237 deletions(-)

diff --git a/app/src/main/java/org/torproject/android/MainConstants.java b/app/src/main/java/org/torproject/android/MainConstants.java
new file mode 100644
index 00000000..f7f20cbe
--- /dev/null
+++ b/app/src/main/java/org/torproject/android/MainConstants.java
@@ -0,0 +1,15 @@
+package org.torproject.android;
+
+public interface MainConstants {
+
+    //EXIT COUNTRY CODES
+    String[] COUNTRY_CODES = {"DE","AT","SE","CH","IS","CA","US","ES","FR","BG","PL","AU","BR","CZ","DK","FI","GB","HU","NL","JP","RO","RU","SG","SK"};
+
+    //path to check Tor against
+    String URL_TOR_CHECK = "https://check.torproject.org";
+
+    String URL_TOR_BRIDGES = "https://bridges.torproject.org/bridges?transport=";
+
+    int RESULT_CLOSE_ALL = 0;
+
+}
diff --git a/app/src/main/java/org/torproject/android/OrbotMainActivity.java b/app/src/main/java/org/torproject/android/OrbotMainActivity.java
index 785016f7..0dad0520 100644
--- a/app/src/main/java/org/torproject/android/OrbotMainActivity.java
+++ b/app/src/main/java/org/torproject/android/OrbotMainActivity.java
@@ -21,6 +21,8 @@ import org.torproject.android.service.util.Prefs;
 import org.torproject.android.service.TorService;
 import org.torproject.android.service.TorServiceConstants;
 import org.torproject.android.service.util.TorServiceUtils;
+import org.torproject.android.service.vpn.VpnConstants;
+import org.torproject.android.service.vpn.VpnPrefs;
 import org.torproject.android.settings.Languages;
 import org.torproject.android.settings.LocaleHelper;
 import org.torproject.android.settings.SettingsPreferences;
@@ -88,6 +90,11 @@ import com.google.zxing.integration.android.IntentResult;
 import pl.bclogic.pulsator4droid.library.PulsatorLayout;
 
 import static android.support.v4.content.FileProvider.getUriForFile;
+import static org.torproject.android.MainConstants.COUNTRY_CODES;
+import static org.torproject.android.MainConstants.RESULT_CLOSE_ALL;
+import static org.torproject.android.MainConstants.URL_TOR_CHECK;
+import static org.torproject.android.service.vpn.VpnPrefs.PREFS_KEY_TORIFIED;
+import static org.torproject.android.service.vpn.VpnUtils.getSharedPrefs;
 
 public class OrbotMainActivity extends AppCompatActivity
         implements OrbotConstants, OnLongClickListener {
@@ -195,6 +202,11 @@ public class OrbotMainActivity extends AppCompatActivity
             startActivity(new Intent(this,OnboardingActivity.class));
         }
 
+        /**
+         * Resets previous DNS Port to the default
+         */
+        getSharedPrefs(getApplicationContext()).edit().putInt(VpnPrefs.PREFS_DNS_PORT,
+                VpnConstants.TOR_DNS_PORT_DEFAULT).apply();
 
     }
 
@@ -375,11 +387,11 @@ public class OrbotMainActivity extends AppCompatActivity
             ArrayList<String> cList = new ArrayList<String>();
             cList.add(0, getString(R.string.vpn_default_world));
 
-            for (int i = 0; i < TorServiceConstants.COUNTRY_CODES.length; i++) {
-                Locale locale = new Locale("", TorServiceConstants.COUNTRY_CODES[i]);
+            for (int i = 0; i < COUNTRY_CODES.length; i++) {
+                Locale locale = new Locale("", COUNTRY_CODES[i]);
                 cList.add(locale.getDisplayCountry());
 
-                if (currentExit.contains(TorServiceConstants.COUNTRY_CODES[i]))
+                if (currentExit.contains(COUNTRY_CODES[i]))
                     selIdx = i + 1;
             }
 
@@ -407,7 +419,7 @@ public class OrbotMainActivity extends AppCompatActivity
                     if (position == 0)
                         country = "";
                     else
-                        country = '{' + TorServiceConstants.COUNTRY_CODES[position - 1] + '}';
+                        country = '{' + COUNTRY_CODES[position - 1] + '}';
 
                     Intent torService = new Intent(OrbotMainActivity.this, TorService.class);
                     torService.setAction(TorServiceConstants.CMD_SET_EXIT);
diff --git a/app/src/main/java/org/torproject/android/ui/AppManagerActivity.java b/app/src/main/java/org/torproject/android/ui/AppManagerActivity.java
index 071788fc..afa09500 100644
--- a/app/src/main/java/org/torproject/android/ui/AppManagerActivity.java
+++ b/app/src/main/java/org/torproject/android/ui/AppManagerActivity.java
@@ -38,6 +38,8 @@ import android.widget.ListAdapter;
 import android.widget.ProgressBar;
 import android.widget.TextView;
 
+import static org.torproject.android.service.vpn.VpnPrefs.PREFS_KEY_TORIFIED;
+
 public class AppManagerActivity extends AppCompatActivity implements OnClickListener, OrbotConstants {
 
     private GridView listApps;
diff --git a/app/src/main/java/org/torproject/android/ui/onboarding/BridgeWizardActivity.java b/app/src/main/java/org/torproject/android/ui/onboarding/BridgeWizardActivity.java
index e03a8d2d..7561ae07 100644
--- a/app/src/main/java/org/torproject/android/ui/onboarding/BridgeWizardActivity.java
+++ b/app/src/main/java/org/torproject/android/ui/onboarding/BridgeWizardActivity.java
@@ -26,6 +26,8 @@ import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.net.SocketAddress;
 
+import static org.torproject.android.MainConstants.URL_TOR_BRIDGES;
+
 public class BridgeWizardActivity extends AppCompatActivity {
 
     private TextView tvStatus;
@@ -128,7 +130,7 @@ public class BridgeWizardActivity extends AppCompatActivity {
                 .setPositiveButton(R.string.get_bridges_web, new Dialog.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
-                        openBrowser(OrbotConstants.URL_TOR_BRIDGES, true);
+                        openBrowser(URL_TOR_BRIDGES, true);
                     }
                 }).show();
     }
diff --git a/orbotservice/src/main/java/org/torproject/android/service/OrbotConstants.java b/orbotservice/src/main/java/org/torproject/android/service/OrbotConstants.java
index 0ad83f77..e452105e 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/OrbotConstants.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/OrbotConstants.java
@@ -7,25 +7,12 @@ public interface OrbotConstants {
 
 	String TAG = "Orbot";
 
-	String PREFS_KEY = "OrbotPrefs";
-	String PREFS_KEY_TORIFIED = "PrefTord";
-
-	int FILE_WRITE_BUFFER_SIZE = 2048;
-	
-	//path to check Tor against
-	String URL_TOR_CHECK = "https://check.torproject.org";
-	
-    String URL_TOR_BRIDGES = "https://bridges.torproject.org/bridges?transport=";
-
-	String PREF_BRIDGES_UPDATED = "pref_bridges_enabled";
-	//String PREF_BRIDGES_OBFUSCATED = "pref_bridges_obfuscated";
     String PREF_OR = "pref_or";
     String PREF_OR_PORT = "pref_or_port";
     String PREF_OR_NICKNAME = "pref_or_nickname";
     String PREF_REACHABLE_ADDRESSES = "pref_reachable_addresses";
     String PREF_REACHABLE_ADDRESSES_PORTS = "pref_reachable_addresses_ports";
-	 int RESULT_CLOSE_ALL = 0;
-	
+
 	String PREF_DISABLE_NETWORK = "pref_disable_network";
 	
 	String PREF_TOR_SHARED_PREFS = "org.torproject.android_preferences";
diff --git a/orbotservice/src/main/java/org/torproject/android/service/TorService.java b/orbotservice/src/main/java/org/torproject/android/service/TorService.java
index cbd06301..be1e18e2 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/TorService.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/TorService.java
@@ -51,6 +51,7 @@ import org.torproject.android.service.util.TorServiceUtils;
 import org.torproject.android.service.util.Utils;
 import org.torproject.android.service.vpn.OrbotVpnManager;
 import org.torproject.android.service.vpn.TorVpnService;
+import org.torproject.android.service.vpn.VpnPrefs;
 
 import java.io.BufferedReader;
 import java.io.ByteArrayOutputStream;
@@ -81,6 +82,9 @@ import java.util.concurrent.TimeoutException;
 import info.pluggabletransports.dispatch.util.TransportListener;
 import info.pluggabletransports.dispatch.util.TransportManager;
 
+import static org.torproject.android.service.vpn.VpnUtils.getSharedPrefs;
+import static org.torproject.android.service.vpn.VpnUtils.killProcess;
+
 public class TorService extends Service implements TorServiceConstants, OrbotConstants
 {
 
@@ -492,7 +496,7 @@ public class TorService extends Service implements TorServiceConstants, OrbotCon
         }
         // if that fails, try again using native utils
         try {
-        	TorServiceUtils.killProcess(fileTor, "-1"); // this is -HUP
+            killProcess(fileTor, "-1"); // this is -HUP
         } catch (Exception e) {
             e.printStackTrace();
         } 
@@ -1105,6 +1109,8 @@ public class TorService extends Service implements TorServiceConstants, OrbotCon
                         confDns = st.nextToken().split(":")[1];
                         confDns = confDns.substring(0,confDns.length()-1);
                         mPortDns = Integer.parseInt(confDns);
+                        getSharedPrefs(getApplicationContext()).edit().putInt(VpnPrefs.PREFS_DNS_PORT, mPortDns).apply();
+
 
                         String confTrans = conn.getInfo("net/listeners/trans");
                         st = new StringTokenizer(confTrans," ");
diff --git a/orbotservice/src/main/java/org/torproject/android/service/TorServiceConstants.java b/orbotservice/src/main/java/org/torproject/android/service/TorServiceConstants.java
index 14210483..8fd9eeca 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/TorServiceConstants.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/TorServiceConstants.java
@@ -7,67 +7,29 @@ import android.content.Intent;
 
 public interface TorServiceConstants {
 
-	String TOR_APP_USERNAME = "org.torproject.android";
 
-	//String DIRECTORY_TOR_BINARY = "bin";
 	String DIRECTORY_TOR_DATA = "data";
 
 	String TOR_CONTROL_PORT_FILE = "control.txt";
-
-	//name of the tor C binary
-	String TOR_ASSET_KEY = "tor";	
 	
 	//torrc (tor config file)
 	String TORRC_ASSET_KEY = "torrc";
-	String TORRCDIAG_ASSET_KEY = "torrcdiag";
-	String TORRC_TETHER_KEY = "torrctether";
 	
 	String TOR_CONTROL_COOKIE = "control_auth_cookie";
 	
-	//privoxy
-	String POLIPO_ASSET_KEY = "polipo";
-	
-	//privoxy.config
-	String POLIPOCONFIG_ASSET_KEY = "torpolipo.conf";
-	
 	//geoip data file asset key
 	String GEOIP_ASSET_KEY = "geoip";
 	String GEOIP6_ASSET_KEY = "geoip6";
 
-	//various console cmds
-	String SHELL_CMD_CHMOD = "chmod";
-	String SHELL_CMD_KILL = "kill -9";
-	String SHELL_CMD_RM = "rm";
-	String SHELL_CMD_PS = "toolbox ps";
-	String SHELL_CMD_PS_ALT = "ps";
-    
-    
-	//String SHELL_CMD_PIDOF = "pidof";
-	String SHELL_CMD_LINK = "ln -s";
-	String SHELL_CMD_CP = "cp";
-	
-
-	String CHMOD_EXE_VALUE = "770";
-
-	int FILE_WRITE_BUFFER_SIZE = 1024;
-
 	String IP_LOCALHOST = "127.0.0.1";
-//	int UPDATE_TIMEOUT = 1000;
 	int TOR_TRANSPROXY_PORT_DEFAULT = 9040;
 	
-//	int STANDARD_DNS_PORT = 53;
 	int TOR_DNS_PORT_DEFAULT = 5400;
-//	String TOR_VPN_DNS_LISTEN_ADDRESS = "127.0.0.1";
-	
-//	int CONTROL_PORT_DEFAULT = 9051;
+
     String HTTP_PROXY_PORT_DEFAULT = "8118"; // like Privoxy!
     String SOCKS_PROXY_PORT_DEFAULT = "9050";
 
-	//path to check Tor against
-	String URL_TOR_CHECK = "https://check.torproject.org";
-
     //control port 
-    String TOR_CONTROL_PORT_MSG_BOOTSTRAP_DONE = "Bootstrapped 100%";
     String LOG_NOTICE_HEADER = "NOTICE";
     String LOG_NOTICE_BOOTSTRAPPED = "Bootstrapped";
     
@@ -136,17 +98,10 @@ public interface TorServiceConstants {
      String CMD_UPDATE_TRANS_PROXY = "update";
      String CMD_SET_EXIT = "setexit";
 
-   //  String BINARY_TOR_VERSION = "0.3.1.8-openssl1.0.2k";
      String PREF_BINARY_TOR_VERSION_INSTALLED = "BINARY_TOR_VERSION_INSTALLED";
     
     //obfsproxy 
      String OBFSCLIENT_ASSET_KEY = "obfs4proxy";
-    
-   //  String MEEK_ASSET_KEY = "meek-client";
-
-	//EXIT COUNTRY CODES
-	String[] COUNTRY_CODES = {"DE","AT","SE","CH","IS","CA","US","ES","FR","BG","PL","AU","BR","CZ","DK","FI","GB","HU","NL","JP","RO","RU","SG","SK"};
-
 
 	 String HIDDEN_SERVICES_DIR = "hidden_services";
 
diff --git a/orbotservice/src/main/java/org/torproject/android/service/util/TorServiceUtils.java b/orbotservice/src/main/java/org/torproject/android/service/util/TorServiceUtils.java
index 78913a67..938bb465 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/util/TorServiceUtils.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/util/TorServiceUtils.java
@@ -2,159 +2,21 @@
 /* See LICENSE for licensing information */
 package org.torproject.android.service.util;
 
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.net.ConnectException;
-import java.net.InetSocketAddress;
-import java.net.Socket;
-
 import android.content.Context;
 import android.content.SharedPreferences;
 
 import org.torproject.android.service.OrbotConstants;
 import org.torproject.android.service.TorServiceConstants;
 
-public class TorServiceUtils implements TorServiceConstants {
-
-	
-	
-	public static int findProcessId(String command) throws IOException 
-	{
-		int procId = findProcessIdWithPS(command);
-		return procId;
-	}
-	
-	//use 'pidof' command
-	/**
-	public static int findProcessIdWithPidOf(String command) throws Exception
-	{
-		
-		int procId = -1;
-		
-		Runtime r = Runtime.getRuntime();
-		    	
-		Process procPs = null;
-		
-		String baseName = new File(command).getName();
-		//fix contributed my mikos on 2010.12.10
-		procPs = r.exec(new String[] {SHELL_CMD_PIDOF, baseName});
-        //procPs = r.exec(SHELL_CMD_PIDOF);
-            
-        BufferedReader reader = new BufferedReader(new InputStreamReader(procPs.getInputStream()));
-        String line = null;
-
-        while ((line = reader.readLine())!=null)
-        {
-        
-        	try
-        	{
-        		//this line should just be the process id
-        		procId = Integer.parseInt(line.trim());
-        		break;
-        	}
-        	catch (NumberFormatException e)
-        	{
-        		Log.e("TorServiceUtils","unable to parse process pid: " + line,e);
-        	}
-        }
-            
-       
-        return procId;
+import java.net.ConnectException;
+import java.net.InetSocketAddress;
+import java.net.Socket;
 
-	}
-	 * @throws IOException */
-	
-	//use 'ps' command
-	public static int findProcessIdWithPS(String command) throws IOException 
-	{
-		
-		int procId = -1;
-		
-		Runtime r = Runtime.getRuntime();
-		    	
-		Process procPs = null;
-		
-        procPs = r.exec(SHELL_CMD_PS); // this is the android ps <name> command
-            
-        BufferedReader reader = new BufferedReader(new InputStreamReader(procPs.getInputStream()));
-        String line = null;
-        
-        while ((line = reader.readLine())!=null)
-        {
-        	if (line.contains("PID"))
-        		continue;
-        		
-        	if (line.contains(command))
-        	{
-        		
-        		String[] lineParts = line.split("\\s+");
-        		
-        	    try { 
-        	        
-        	        procId = Integer.parseInt(lineParts[1]); //for most devices it is the second number
-        	    } catch(NumberFormatException e) {
-        	    	procId = Integer.parseInt(lineParts[0]); //but for samsungs it is the first
-        	        
-        	    }
-        		
-        		
-        		break;
-        	}
-        }
-        
-        try { procPs.destroy(); } catch (Exception e) {} // try to destroy just to make sure we clean it up
-       
-        return procId;
+public class TorServiceUtils implements TorServiceConstants {
 
-	}
-	
 	public static SharedPreferences getSharedPrefs (Context context) {
 		return context.getSharedPreferences(OrbotConstants.PREF_TOR_SHARED_PREFS,0 | Context.MODE_MULTI_PROCESS);
 	}
-	
-	public static void killProcess(File fileProcBin) throws Exception {
-        killProcess(fileProcBin, "-9"); // this is -KILL
-    }
-
-    public static void killProcess(File fileProcBin, String signal) throws Exception {
-        int procId = -1;
-        int killAttempts = 0;
-
-        while ((procId = TorServiceUtils.findProcessId(fileProcBin.getCanonicalPath())) != -1) {
-            killAttempts++;
-            //logNotice("Found " + fileProcBin.getName() + " PID=" + procId + " - killing now...");
-            String pidString = String.valueOf(procId);
-            /*
-             * first try as the normal app user to be safe, then if that fails,
-             * try root since the process might be left over from
-             * uninstall/reinstall with different UID.
-             */
-
-			/**
-            if (Prefs.useRoot() && killAttempts > 2) {
-                shell = Shell.startRootShell();
-                Log.i(OrbotApp.TAG, "using a root shell");
-            } else {
-                shell = Shell.startShell();
-            }*/
-
-            try { Runtime.getRuntime().exec("busybox killall " + signal + " " + fileProcBin.getName());}catch(IOException ioe){}
-			try { Runtime.getRuntime().exec("toolbox kill " + signal + " " + pidString);}catch(IOException ioe){}
-			try { Runtime.getRuntime().exec("busybox kill " + signal + " " + pidString);}catch(IOException ioe){}
-			try { Runtime.getRuntime().exec("kill " + signal + " " + pidString);}catch(IOException ioe){}
-
-			try {
-                Thread.sleep(1000);
-            } catch (InterruptedException e) {
-                // ignored
-            }
-
-            if (killAttempts > 4)
-                throw new Exception("Cannot kill: " + fileProcBin.getAbsolutePath());
-        }
-    }
 
     public static boolean isPortOpen(final String ip, final int port, final int timeout) {
         try {
diff --git a/orbotservice/src/main/java/org/torproject/android/service/vpn/OrbotVpnManager.java b/orbotservice/src/main/java/org/torproject/android/service/vpn/OrbotVpnManager.java
index e7675001..541fd12f 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/vpn/OrbotVpnManager.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/vpn/OrbotVpnManager.java
@@ -17,7 +17,6 @@
 package org.torproject.android.service.vpn;
 
 import android.annotation.TargetApi;
-import android.app.Application;
 import android.app.PendingIntent;
 import android.app.Service;
 import android.content.Context;
@@ -37,9 +36,6 @@ import com.runjva.sourceforge.jsocks.protocol.ProxyServer;
 import com.runjva.sourceforge.jsocks.server.ServerAuthenticatorNone;
 
 import org.torproject.android.service.R;
-import org.torproject.android.service.TorService;
-import org.torproject.android.service.TorServiceConstants;
-import org.torproject.android.service.util.TorServiceUtils;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -52,6 +48,9 @@ import java.net.InetAddress;
 import java.util.ArrayList;
 import java.util.concurrent.TimeoutException;
 
+import static org.torproject.android.service.vpn.VpnUtils.getSharedPrefs;
+import static org.torproject.android.service.vpn.VpnUtils.killProcess;
+
 public class OrbotVpnManager implements Handler.Callback {
     private static final String TAG = "OrbotVpnService";
 
@@ -250,7 +249,7 @@ public class OrbotVpnManager implements Handler.Callback {
         Tun2Socks.Stop();
         
         try {
-        	TorServiceUtils.killProcess(filePdnsd);
+        	killProcess(filePdnsd);
         } catch (Exception e) {
             e.printStackTrace();
         }
@@ -278,7 +277,7 @@ public class OrbotVpnManager implements Handler.Callback {
         	Tun2Socks.Stop();
         }
 
-        final int localDns = TorService.mPortDns;
+		final int localDns = getSharedPrefs(this.mService.getApplicationContext()).getInt(VpnPrefs.PREFS_DNS_PORT, 0);
         
     	mThreadVPN = new Thread ()
     	{
@@ -367,7 +366,7 @@ public class OrbotVpnManager implements Handler.Callback {
 	private void doLollipopAppRouting (Builder builder) throws NameNotFoundException
     {    
     	   
-        ArrayList<TorifiedApp> apps = TorifiedApp.getApps(mService, TorServiceUtils.getSharedPrefs(mService.getApplicationContext()));
+        ArrayList<TorifiedApp> apps = TorifiedApp.getApps(mService, getSharedPrefs(mService.getApplicationContext()));
     
         boolean perAppEnabled = false;
         
@@ -393,7 +392,7 @@ public class OrbotVpnManager implements Handler.Callback {
     	
     	if (!isRestart)
     	{
-	    	SharedPreferences prefs = TorServiceUtils.getSharedPrefs(mService.getApplicationContext()); 
+	    	SharedPreferences prefs = getSharedPrefs(mService.getApplicationContext());
 	        prefs.edit().putBoolean("pref_vpn", false).commit();      
 	    	stopVPN();	
     	}
diff --git a/orbotservice/src/main/java/org/torproject/android/service/vpn/PDNSDInstaller.java b/orbotservice/src/main/java/org/torproject/android/service/vpn/PDNSDInstaller.java
index 58caffad..d19b7212 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/vpn/PDNSDInstaller.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/vpn/PDNSDInstaller.java
@@ -1,34 +1,24 @@
 package org.torproject.android.service.vpn;
 
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.util.Log;
+
+import org.torproject.android.service.util.CustomNativeLoader;
+
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.io.PrintStream;
-import java.io.StringBufferInputStream;
-import java.util.ArrayList;
 import java.util.concurrent.TimeoutException;
 import java.util.zip.ZipEntry;
-import java.util.zip.ZipFile;
 import java.util.zip.ZipInputStream;
 
-import android.content.Context;
-import android.content.pm.ApplicationInfo;
-import android.os.Build;
-import android.util.Log;
-
-import org.torproject.android.service.OrbotConstants;
-import org.torproject.android.service.R;
-import org.torproject.android.service.TorServiceConstants;
-import org.torproject.android.service.util.CustomNativeLoader;
-import org.torproject.android.service.util.NativeLoader;
+import static org.torproject.android.service.vpn.VpnConstants.FILE_WRITE_BUFFER_SIZE;
 
-public class PDNSDInstaller implements TorServiceConstants {
+public class PDNSDInstaller {
 
     private final static String LIB_NAME = "pdnsd";
     private final static String LIB_SO_NAME = "pdnsd.so";
diff --git a/orbotservice/src/main/java/org/torproject/android/service/vpn/TorifiedApp.java b/orbotservice/src/main/java/org/torproject/android/service/vpn/TorifiedApp.java
index cb60e442..397dd259 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/vpn/TorifiedApp.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/vpn/TorifiedApp.java
@@ -7,8 +7,6 @@ import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.graphics.drawable.Drawable;
 
-import org.torproject.android.service.OrbotConstants;
-
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -16,6 +14,8 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.StringTokenizer;
 
+import static org.torproject.android.service.vpn.VpnPrefs.PREFS_KEY_TORIFIED;
+
 public class TorifiedApp implements Comparable {
 
 	private boolean enabled;
@@ -153,7 +153,7 @@ public class TorifiedApp implements Comparable {
 	public static ArrayList<TorifiedApp> getApps (Context context, SharedPreferences prefs)
 	{
 
-		String tordAppString = prefs.getString(OrbotConstants.PREFS_KEY_TORIFIED, "");
+		String tordAppString = prefs.getString(PREFS_KEY_TORIFIED, "");
 		String[] tordApps;
 
 		StringTokenizer st = new StringTokenizer(tordAppString,"|");
diff --git a/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnConstants.java b/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnConstants.java
new file mode 100644
index 00000000..01ac5eea
--- /dev/null
+++ b/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnConstants.java
@@ -0,0 +1,14 @@
+package org.torproject.android.service.vpn;
+
+import org.torproject.android.service.TorServiceConstants;
+
+public interface VpnConstants {
+
+    int FILE_WRITE_BUFFER_SIZE = 2048;
+
+    String SHELL_CMD_PS = "toolbox ps";
+
+    //Keep Aligned with TorServiceContants,
+    int TOR_DNS_PORT_DEFAULT = TorServiceConstants.TOR_DNS_PORT_DEFAULT;
+
+}
diff --git a/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnPrefs.java b/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnPrefs.java
new file mode 100644
index 00000000..beba5bee
--- /dev/null
+++ b/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnPrefs.java
@@ -0,0 +1,15 @@
+package org.torproject.android.service.vpn;
+
+public interface VpnPrefs {
+
+    String PREFS_DNS_PORT= "PREFS_DNS_PORT";
+
+    String PREFS_KEY_TORIFIED = "PrefTord";
+
+    /**
+     * Keep this in sync with the one in TorServiceUtils
+     */
+    String PREF_TOR_SHARED_PREFS = "org.torproject.android_preferences";
+
+
+}
diff --git a/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnUtils.java b/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnUtils.java
new file mode 100644
index 00000000..ce862b04
--- /dev/null
+++ b/orbotservice/src/main/java/org/torproject/android/service/vpn/VpnUtils.java
@@ -0,0 +1,84 @@
+package org.torproject.android.service.vpn;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+import static java.lang.Runtime.getRuntime;
+import static org.torproject.android.service.vpn.VpnConstants.SHELL_CMD_PS;
+import static org.torproject.android.service.vpn.VpnPrefs.PREF_TOR_SHARED_PREFS;
+
+public class VpnUtils {
+
+    public static SharedPreferences getSharedPrefs(Context context) {
+        return context.getSharedPreferences(PREF_TOR_SHARED_PREFS,
+                Context.MODE_MULTI_PROCESS);
+    }
+
+    public static int findProcessId(String command) throws IOException {
+        Process procPs = getRuntime().exec(SHELL_CMD_PS);
+        BufferedReader reader = new BufferedReader(new InputStreamReader(procPs.getInputStream()));
+
+        String line;
+        while ((line = reader.readLine()) != null) {
+            if (!line.contains("PID") && line.contains(command)) {
+                String[] lineParts = line.split("\\s+");
+                try {
+                    return Integer.parseInt(lineParts[1]); //for most devices it is the second
+                } catch (NumberFormatException e) {
+                    return Integer.parseInt(lineParts[0]); //but for samsungs it is the first
+                } finally {
+                    try {
+                        procPs.destroy();
+                    } catch (Exception e) {
+                    }
+                }
+            }
+        }
+        return -1;
+    }
+
+    public static void killProcess(File fileProcBin) throws Exception {
+        killProcess(fileProcBin, "-9"); // this is -KILL
+    }
+
+    public static void killProcess(File fileProcBin, String signal) throws Exception {
+        int procId = -1;
+        int killAttempts = 0;
+
+        while ((procId = findProcessId(fileProcBin.getCanonicalPath())) != -1) {
+            killAttempts++;
+            String pidString = String.valueOf(procId);
+            try {
+                getRuntime().exec("busybox killall " + signal + " " + fileProcBin.getName
+                        ());
+            } catch (IOException ioe) {
+            }
+            try {
+                getRuntime().exec("toolbox kill " + signal + " " + pidString);
+            } catch (IOException ioe) {
+            }
+            try {
+                getRuntime().exec("busybox kill " + signal + " " + pidString);
+            } catch (IOException ioe) {
+            }
+            try {
+                getRuntime().exec("kill " + signal + " " + pidString);
+            } catch (IOException ioe) {
+            }
+
+            try {
+                Thread.sleep(1000);
+            } catch (InterruptedException e) {
+                // ignored
+            }
+
+            if (killAttempts > 4)
+                throw new Exception("Cannot kill: " + fileProcBin.getAbsolutePath());
+        }
+    }
+}





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