Update ics-openvpn

12 files changed, 560 insertions, 488 deletions

diff --git a/app/src/main/java/de/blinkt/openvpn/LaunchVPN.java b/app/src/main/java/de/blinkt/openvpn/LaunchVPN.java
index 721e8991..16f986ae 100644
--- a/app/src/main/java/de/blinkt/openvpn/LaunchVPN.java
+++ b/app/src/main/java/de/blinkt/openvpn/LaunchVPN.java
@@ -20,7 +20,6 @@ import android.preference.PreferenceManager;
 import android.text.InputType;
 import android.text.TextUtils;
 import android.text.method.PasswordTransformationMethod;
-import android.util.Log;
 import android.view.View;
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
@@ -36,202 +35,179 @@ import de.blinkt.openvpn.core.VpnStatus.ConnectionStatus;
 
 /**
  * This Activity actually handles two stages of a launcher shortcut's life cycle.
- * 
+ * <p/>
  * 1. Your application offers to provide shortcuts to the launcher.  When
- *    the user installs a shortcut, an activity within your application
- *    generates the actual shortcut and returns it to the launcher, where it
- *    is shown to the user as an icon.
- *
+ * the user installs a shortcut, an activity within your application
+ * generates the actual shortcut and returns it to the launcher, where it
+ * is shown to the user as an icon.
+ * <p/>
  * 2. Any time the user clicks on an installed shortcut, an intent is sent.
- *    Typically this would then be handled as necessary by an activity within
- *    your application.
- *    
+ * Typically this would then be handled as necessary by an activity within
+ * your application.
+ * <p/>
  * We handle stage 1 (creating a shortcut) by simply sending back the information (in the form
  * of an {@link android.content.Intent} that the launcher will use to create the shortcut.
- * 
+ * <p/>
  * You can also implement this in an interactive way, by having your activity actually present
  * UI for the user to select the specific nature of the shortcut, such as a contact, picture, URL,
  * media item, or action.
- * 
+ * <p/>
  * We handle stage 2 (responding to a shortcut) in this sample by simply displaying the contents
  * of the incoming {@link android.content.Intent}.
- * 
+ * <p/>
  * In a real application, you would probably use the shortcut intent to display specific content
  * or start a particular operation.
  */
 public class LaunchVPN extends Activity {
 
-	public static final String EXTRA_KEY = "de.blinkt.openvpn.shortcutProfileUUID";
-	public static final String EXTRA_NAME = "de.blinkt.openvpn.shortcutProfileName";
-	public static final String EXTRA_HIDELOG =  "de.blinkt.openvpn.showNoLogWindow";
-	public static final String CLEARLOG = "clearlogconnect";
+    public static final String EXTRA_KEY = "de.blinkt.openvpn.shortcutProfileUUID";
+    public static final String EXTRA_NAME = "de.blinkt.openvpn.shortcutProfileName";
+    public static final String EXTRA_HIDELOG = "de.blinkt.openvpn.showNoLogWindow";
+    public static final String CLEARLOG = "clearlogconnect";
 
 
-	private static final int START_VPN_PROFILE= 70;
+    private static final int START_VPN_PROFILE = 70;
 
 
-	private ProfileManager mPM;
-	private VpnProfile mSelectedProfile;
-	private boolean mhideLog=false;
+    private VpnProfile mSelectedProfile;
+    private boolean mhideLog = false;
 
-	private boolean mCmfixed=false;
+    private boolean mCmfixed = false;
 
-	@Override
-	public void onCreate(Bundle icicle) {
-		super.onCreate(icicle);
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
 
-		mPM =ProfileManager.getInstance(this);
+        startVpnFromIntent();
+    }
 
-	}	
+    protected void startVpnFromIntent() {
+        // Resolve the intent
 
-	@Override
-	protected void onStart() {
-		super.onStart();
-		// Resolve the intent
+        final Intent intent = getIntent();
+        final String action = intent.getAction();
 
-		final Intent intent = getIntent();
-		final String action = intent.getAction();
+        // If the intent is a request to create a shortcut, we'll do that and exit
 
-		// If the intent is a request to create a shortcut, we'll do that and exit
 
+        if (Intent.ACTION_MAIN.equals(action)) {
+            // Check if we need to clear the log
+            if (PreferenceManager.getDefaultSharedPreferences(this).getBoolean(CLEARLOG, true))
+                VpnStatus.clearLog();
 
-		if(Intent.ACTION_MAIN.equals(action)) {
-			// Check if we need to clear the log
-			if (PreferenceManager.getDefaultSharedPreferences(this).getBoolean(CLEARLOG, true))
-				VpnStatus.clearLog();
+            // we got called to be the starting point, most likely a shortcut
+            String shortcutUUID = intent.getStringExtra(EXTRA_KEY);
+            String shortcutName = intent.getStringExtra(EXTRA_NAME);
+            mhideLog = intent.getBooleanExtra(EXTRA_HIDELOG, false);
 
-			// we got called to be the starting point, most likely a shortcut
-			String shortcutUUID = intent.getStringExtra( EXTRA_KEY);
-			String shortcutName = intent.getStringExtra( EXTRA_NAME);
-			mhideLog = intent.getBooleanExtra(EXTRA_HIDELOG, false);
+            VpnProfile profileToConnect = ProfileManager.get(this, shortcutUUID);
+            if (shortcutName != null && profileToConnect == null)
+                profileToConnect = ProfileManager.getInstance(this).getProfileByName(shortcutName);
 
-			VpnProfile profileToConnect = ProfileManager.get(this,shortcutUUID);
-			if(shortcutName != null && profileToConnect ==null)
-				profileToConnect = ProfileManager.getInstance(this).getProfileByName(shortcutName);
+            if (profileToConnect == null) {
+                VpnStatus.logError(R.string.shortcut_profile_notfound);
+                // show Log window to display error
+                showLogWindow();
+                finish();
+            } else {
+                mSelectedProfile = profileToConnect;
+                launchVPN();
+            }
+        }
+    }
 
-			if(profileToConnect ==null) {
-				VpnStatus.logError(R.string.shortcut_profile_notfound);
-				// show Log window to display error
-				showLogWindow();
-				finish();
-				return;
-			}
+    @Override
+    protected void onActivityResult (int requestCode, int resultCode, Intent data) {
+	super.onActivityResult(requestCode, resultCode, data);
 
-			mSelectedProfile = profileToConnect;
-			launchVPN();
+	if(requestCode==START_VPN_PROFILE) {
+	    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
+	    boolean showLogWindow = prefs.getBoolean("showlogwindow", true);
 
-		}
-	}
-
-	@Override
-	protected void onActivityResult (int requestCode, int resultCode, Intent data) {
-		super.onActivityResult(requestCode, resultCode, data);
-
-		if(requestCode==START_VPN_PROFILE) {
-		    if(resultCode == Activity.RESULT_OK) {
-			SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);        
-			boolean showLogWindow = prefs.getBoolean("showlogwindow", true);
-
-			if(!mhideLog && showLogWindow)
-			    showLogWindow();
-			new startOpenVpnThread().start();
-		    } else if (resultCode == Activity.RESULT_CANCELED) {
-			// User does not want us to start, so we just vanish
-			VpnStatus.updateStateString("USER_VPN_PERMISSION_CANCELLED", "", R.string.state_user_vpn_permission_cancelled,
-						    ConnectionStatus.LEVEL_NOTCONNECTED);
-
-			finish();
-		    }
-		}
-	}
+	    if(!mhideLog && showLogWindow)
+		showLogWindow();
 
-	void showLogWindow() {
-
-		Intent startLW = new Intent(getBaseContext(),LogWindow.class);
-		startLW.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
-		startActivity(startLW);
+	    VPNLaunchHelper.startOpenVpn(mSelectedProfile, getBaseContext());
+	    finish();
+	} else if (resultCode == Activity.RESULT_CANCELED) {
+	    // User does not want us to start, so we just vanish
+	    VpnStatus.updateStateString("USER_VPN_PERMISSION_CANCELLED", "", R.string.state_user_vpn_permission_cancelled,
+					ConnectionStatus.LEVEL_NOTCONNECTED);
 
+	    finish();
 	}
+    }
 
-	void showConfigErrorDialog(int vpnok) {
-		AlertDialog.Builder d = new AlertDialog.Builder(this);
-		d.setTitle(R.string.config_error_found);
-		d.setMessage(vpnok);
-		d.setPositiveButton(android.R.string.ok, new OnClickListener() {
+    void showLogWindow() {
 
-			@Override
-			public void onClick(DialogInterface dialog, int which) {
-				finish();
+        Intent startLW = new Intent(getBaseContext(), LogWindow.class);
+        startLW.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
+        startActivity(startLW);
 
-			}
-		});
-		d.show();
-	}
+    }
 
-	void launchVPN () {
-		int vpnok = mSelectedProfile.checkProfile(this);
-		if(vpnok!= R.string.no_error_found) {
-			showConfigErrorDialog(vpnok);
-			return;
-		}
+    void showConfigErrorDialog(int vpnok) {
+        AlertDialog.Builder d = new AlertDialog.Builder(this);
+        d.setTitle(R.string.config_error_found);
+        d.setMessage(vpnok);
+        d.setPositiveButton(android.R.string.ok, new OnClickListener() {
 
-		Intent intent = VpnService.prepare(this);
-		// Check if we want to fix /dev/tun
-		SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);        
-		boolean usecm9fix = prefs.getBoolean("useCM9Fix", false);
-		boolean loadTunModule = prefs.getBoolean("loadTunModule", false);
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                finish();
 
-		if(loadTunModule)
-			execeuteSUcmd("insmod /system/lib/modules/tun.ko");
+            }
+        });
+        d.show();
+    }
 
-		if(usecm9fix && !mCmfixed ) {
-			execeuteSUcmd("chown system /dev/tun");
-		}
+    void launchVPN() {
+        int vpnok = mSelectedProfile.checkProfile(this);
+        if (vpnok != R.string.no_error_found) {
+            showConfigErrorDialog(vpnok);
+            return;
+        }
 
+        Intent intent = VpnService.prepare(this);
+        // Check if we want to fix /dev/tun
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
+        boolean usecm9fix = prefs.getBoolean("useCM9Fix", false);
+        boolean loadTunModule = prefs.getBoolean("loadTunModule", false);
 
-		if (intent != null) {
-			VpnStatus.updateStateString("USER_VPN_PERMISSION", "", R.string.state_user_vpn_permission,
-                    ConnectionStatus.LEVEL_WAITING_FOR_USER_INPUT);
-			// Start the query
-			try {
-				startActivityForResult(intent, START_VPN_PROFILE);
-			} catch (ActivityNotFoundException ane) {
-				// Shame on you Sony! At least one user reported that 
-				// an official Sony Xperia Arc S image triggers this exception
-				VpnStatus.logError(R.string.no_vpn_support_image);
-				showLogWindow();
-			}
-		} else {
-			onActivityResult(START_VPN_PROFILE, Activity.RESULT_OK, null);
-		}
-
-	}
+        if (loadTunModule)
+            execeuteSUcmd("insmod /system/lib/modules/tun.ko");
 
-	private void execeuteSUcmd(String command) {
-		ProcessBuilder pb = new ProcessBuilder("su","-c",command);
-		try {
-			Process p = pb.start();
-			int ret = p.waitFor();
-			if(ret ==0)
-				mCmfixed=true;
-		} catch (InterruptedException e) {
-            VpnStatus.logException("SU command", e);
+        if (usecm9fix && !mCmfixed) {
+            execeuteSUcmd("chown system /dev/tun");
+        }
 
-		} catch (IOException e) {
+        if (intent != null) {
+            VpnStatus.updateStateString("USER_VPN_PERMISSION", "", R.string.state_user_vpn_permission,
+                    ConnectionStatus.LEVEL_WAITING_FOR_USER_INPUT);
+            // Start the query
+            try {
+                startActivityForResult(intent, START_VPN_PROFILE);
+            } catch (ActivityNotFoundException ane) {
+                // Shame on you Sony! At least one user reported that
+                // an official Sony Xperia Arc S image triggers this exception
+                VpnStatus.logError(R.string.no_vpn_support_image);
+                showLogWindow();
+            }
+        } else {
+            onActivityResult(START_VPN_PROFILE, Activity.RESULT_OK, null);
+        }
+
+    }
+
+    private void execeuteSUcmd(String command) {
+        try {
+            ProcessBuilder pb = new ProcessBuilder("su", "-c", command);
+            Process p = pb.start();
+            int ret = p.waitFor();
+            if (ret == 0)
+                mCmfixed = true;
+        } catch (InterruptedException | IOException e) {
             VpnStatus.logException("SU command", e);
-		}
-	}
-
-	private class startOpenVpnThread extends Thread {
-
-		@Override
-		public void run() {
-			VPNLaunchHelper.startOpenVpn(mSelectedProfile, getBaseContext());
-			finish();
-
-		}
-
-	}
-
-
+        }
+    }
 }
diff --git a/app/src/main/java/de/blinkt/openvpn/VpnProfile.java b/app/src/main/java/de/blinkt/openvpn/VpnProfile.java
index dbe4b440..38d76f68 100644
--- a/app/src/main/java/de/blinkt/openvpn/VpnProfile.java
+++ b/app/src/main/java/de/blinkt/openvpn/VpnProfile.java
@@ -64,7 +64,7 @@ public class VpnProfile implements Serializable, Cloneable {
     // The Serializable documentation mentions that class name change are possible
     // but the how is unclear
     //
-    transient public static final long MAX_EMBED_FILE_SIZE = 2048*1024; // 2048kB
+    transient public static final long MAX_EMBED_FILE_SIZE = 2048 * 1024; // 2048kB
     // Don't change this, not all parts of the program use this constant
     public static final String EXTRA_PROFILEUUID = "de.blinkt.openvpn.profileUUID";
     public static final String INLINE_TAG = "[[INLINE]]";
@@ -150,18 +150,23 @@ public class VpnProfile implements Serializable, Cloneable {
     private int mProfileVersion;
     public String mExcludedRoutes;
     public String mExcludedRoutesv6;
-    public int mMssFix =0; // -1 is default,
+    public int mMssFix = 0; // -1 is default,
     public Connection[] mConnections = new Connection[0];
-    public boolean mRemoteRandom=false;
+    public boolean mRemoteRandom = false;
     public HashSet<String> mAllowedAppsVpn = new HashSet<>();
     public boolean mAllowedAppsVpnAreDisallowed = true;
+
+    public String mCrlFilename;
     public String mProfileCreator;
 
-    /* Options no long used in new profiles */
+
+    public boolean mPushPeerInfo = false;
+    public static final boolean mIsOpenVPN22 = false;
+
+    /* Options no longer used in new profiles */
     public String mServerName = "openvpn.blinkt.de";
     public String mServerPort = "1194";
     public boolean mUseUdp = true;
-    public boolean mPushPeerInfo=false;
 
     public VpnProfile(String name) {
         mUuid = UUID.randomUUID();
@@ -169,7 +174,7 @@ public class VpnProfile implements Serializable, Cloneable {
         mProfileVersion = CURRENT_PROFILE_VERSION;
 
         mConnections = new Connection[1];
-        mConnections[0]  = new Connection();
+        mConnections[0] = new Connection();
     }
 
     public static String openVpnEscape(String unescaped) {
@@ -197,7 +202,7 @@ public class VpnProfile implements Serializable, Cloneable {
         mCheckRemoteCN = false;
         mPersistTun = false;
         mAllowLocalLAN = true;
-        mPushPeerInfo =false;
+        mPushPeerInfo = false;
         mMssFix = 0;
     }
 
@@ -207,33 +212,33 @@ public class VpnProfile implements Serializable, Cloneable {
     }
 
     public String getName() {
-        if (mName==null)
+        if (mName == null)
             return "No profile name";
         return mName;
     }
 
-    public void upgradeProfile(){
-        if(mProfileVersion< 2) {
+    public void upgradeProfile() {
+        if (mProfileVersion < 2) {
             /* default to the behaviour the OS used */
             mAllowLocalLAN = Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT;
         }
 
         if (mProfileVersion < 4) {
             moveOptionsToConnection();
-            mAllowedAppsVpnAreDisallowed=true;
+            mAllowedAppsVpnAreDisallowed = true;
         }
-        if (mAllowedAppsVpn==null)
+        if (mAllowedAppsVpn == null)
             mAllowedAppsVpn = new HashSet<>();
-        if (mConnections ==null)
+        if (mConnections == null)
             mConnections = new Connection[0];
 
         if (mProfileVersion < 6) {
             if (TextUtils.isEmpty(mProfileCreator))
-                mUserEditable=true;
+                mUserEditable = true;
         }
 
 
-        mProfileVersion= CURRENT_PROFILE_VERSION;
+        mProfileVersion = CURRENT_PROFILE_VERSION;
 
     }
 
@@ -271,7 +276,7 @@ public class VpnProfile implements Serializable, Cloneable {
             cfg += String.format("setenv IV_GUI_VER %s \n", openVpnEscape(getVersionEnvString(context)));
             String versionString = String.format("%d %s %s %s %s %s", Build.VERSION.SDK_INT, Build.VERSION.RELEASE,
                     NativeUtils.getNativeAPI(), Build.BRAND, Build.BOARD, Build.MODEL);
-            cfg += String.format("setenv IV_PLAT_VER %s\n", openVpnEscape(versionString)) ;
+            cfg += String.format("setenv IV_PLAT_VER %s\n", openVpnEscape(versionString));
         }
 
         cfg += "machine-readable-output\n";
@@ -304,7 +309,8 @@ public class VpnProfile implements Serializable, Cloneable {
             mConnectRetry = "5";
 
 
-        cfg += "connect-retry " + mConnectRetry + "\n";
+        if (!mIsOpenVPN22 || !mUseUdp)
+            cfg += "connect-retry " + mConnectRetry + "\n";
 
         cfg += "resolv-retry 60\n";
 
@@ -315,7 +321,7 @@ public class VpnProfile implements Serializable, Cloneable {
 
         boolean canUsePlainRemotes = true;
 
-        if (mConnections.length==1) {
+        if (mConnections.length == 1) {
             cfg += mConnections[0].getConnectionBlock();
         } else {
             for (Connection conn : mConnections) {
@@ -323,7 +329,7 @@ public class VpnProfile implements Serializable, Cloneable {
             }
 
             if (mRemoteRandom)
-                cfg+="remote-random\n";
+                cfg += "remote-random\n";
 
             if (canUsePlainRemotes) {
                 for (Connection conn : mConnections) {
@@ -378,6 +384,9 @@ public class VpnProfile implements Serializable, Cloneable {
                 cfg += insertFileData("ca", mCaFilename);
         }
 
+        if (!TextUtils.isEmpty(mCrlFilename))
+            cfg += insertFileData("crl-verify", mCrlFilename);
+
         if (mUseLzo) {
             cfg += "comp-lzo\n";
         }
@@ -411,13 +420,12 @@ public class VpnProfile implements Serializable, Cloneable {
 
         if (mUseDefaultRoute)
             routes += "route 0.0.0.0 0.0.0.0 vpn_gateway\n";
-        else
-        {
+        else {
             for (String route : getCustomRoutes(mCustomRoutes)) {
                 routes += "route " + route + " vpn_gateway\n";
             }
 
-            for (String route: getCustomRoutes(mExcludedRoutes)) {
+            for (String route : getCustomRoutes(mExcludedRoutes)) {
                 routes += "route " + route + " net_gateway\n";
             }
         }
@@ -442,11 +450,11 @@ public class VpnProfile implements Serializable, Cloneable {
 
         }
 
-        if (mMssFix !=0){
-            if (mMssFix!=1450) {
+        if (mMssFix != 0) {
+            if (mMssFix != 1450) {
                 cfg += String.format("mssfix %d\n", mMssFix, Locale.US);
             } else
-                cfg+="mssfix\n";
+                cfg += "mssfix\n";
         }
 
         if (mNobind)
@@ -507,11 +515,11 @@ public class VpnProfile implements Serializable, Cloneable {
         }
 
         if (mPushPeerInfo)
-            cfg+="push-peer-info\n";
+            cfg += "push-peer-info\n";
 
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         boolean usesystemproxy = prefs.getBoolean("usesystemproxy", true);
-        if (usesystemproxy) {
+        if (usesystemproxy && !mIsOpenVPN22) {
             cfg += "# Use system proxy setting\n";
             cfg += "management-query-proxy\n";
         }
@@ -537,8 +545,6 @@ public class VpnProfile implements Serializable, Cloneable {
         }
 
 
-
-
         return cfg;
     }
 
@@ -557,8 +563,7 @@ public class VpnProfile implements Serializable, Cloneable {
     //! Put inline data inline and other data as normal escaped filename
     public static String insertFileData(String cfgentry, String filedata) {
         if (filedata == null) {
-            // TODO: generate good error
-            return String.format("%s %s\n", cfgentry, "missing");
+            return String.format("%s %s\n", cfgentry, "file missing in config profile");
         } else if (isEmbedded(filedata)) {
             String dataWithOutHeader = getEmbeddedContent(filedata);
             return String.format(Locale.ENGLISH, "<%s>\n%s\n</%s>\n", cfgentry, dataWithOutHeader, cfgentry);
@@ -629,39 +634,32 @@ public class VpnProfile implements Serializable, Cloneable {
     }
 
 
-
-
     public Intent prepareStartService(Context context) {
         Intent intent = getStartServiceIntent(context);
 
+        // TODO: Handle this?!
+//        if (mAuthenticationType == VpnProfile.TYPE_KEYSTORE || mAuthenticationType == VpnProfile.TYPE_USERPASS_KEYSTORE) {
+//            if (getKeyStoreCertificates(context) == null)
+//                return null;
+//        }
 
-        if (mAuthenticationType == VpnProfile.TYPE_KEYSTORE || mAuthenticationType == VpnProfile.TYPE_USERPASS_KEYSTORE) {
-            if (getKeyStoreCertificates(context) == null)
-                return null;
-        }
-
+        return intent;
+    }
 
-        try {
-            FileWriter cfg = new FileWriter(VPNLaunchHelper.getConfigFilePath(context));
-            cfg.write(getConfigFile(context, false));
-            cfg.flush();
-            cfg.close();
-        } catch (IOException e) {
-            VpnStatus.logException(e);
-        }
+    public void writeConfigFile(Context context) throws IOException {
+        FileWriter cfg = new FileWriter(VPNLaunchHelper.getConfigFilePath(context));
+        cfg.write(getConfigFile(context, false));
+        cfg.flush();
+        cfg.close();
 
-        return intent;
     }
 
     public Intent getStartServiceIntent(Context context) {
         String prefix = context.getPackageName();
 
         Intent intent = new Intent(context, OpenVPNService.class);
-        intent.putExtra(prefix + ".ARGV", VPNLaunchHelper.buildOpenvpnArgv(context));
         intent.putExtra(prefix + ".profileUUID", mUuid.toString());
 
-        ApplicationInfo info = context.getApplicationInfo();
-        intent.putExtra(prefix + ".nativelib", info.nativeLibraryDir);
         return intent;
     }
 
@@ -672,11 +670,10 @@ public class VpnProfile implements Serializable, Cloneable {
     public static String getDisplayName(String embeddedFile) {
         int start = DISPLAYNAME_TAG.length();
         int end = embeddedFile.indexOf(INLINE_TAG);
-        return embeddedFile.substring(start,end);
+        return embeddedFile.substring(start, end);
     }
 
-    public static String getEmbeddedContent(String data)
-    {
+    public static String getEmbeddedContent(String data) {
         if (!data.contains(INLINE_TAG))
             return data;
 
@@ -685,7 +682,7 @@ public class VpnProfile implements Serializable, Cloneable {
     }
 
     public static boolean isEmbedded(String data) {
-        if (data==null)
+        if (data == null)
             return false;
         if (data.startsWith(INLINE_TAG) || data.startsWith(DISPLAYNAME_TAG))
             return true;
@@ -697,8 +694,8 @@ public class VpnProfile implements Serializable, Cloneable {
         /* This method is called when OpenVPNService is restarted */
 
         if ((mAuthenticationType == VpnProfile.TYPE_KEYSTORE || mAuthenticationType == VpnProfile.TYPE_USERPASS_KEYSTORE)
-                && mPrivateKey==null) {
-            new Thread( new Runnable() {
+                && mPrivateKey == null) {
+            new Thread(new Runnable() {
                 @Override
                 public void run() {
                     getKeyStoreCertificates(context);
@@ -713,9 +710,9 @@ public class VpnProfile implements Serializable, Cloneable {
         VpnProfile copy = (VpnProfile) super.clone();
         copy.mUuid = UUID.randomUUID();
         copy.mConnections = new Connection[mConnections.length];
-        int i=0;
-        for (Connection conn: mConnections) {
-            copy.mConnections[i++]=conn.clone();
+        int i = 0;
+        for (Connection conn : mConnections) {
+            copy.mConnections[i++] = conn.clone();
         }
         copy.mAllowedAppsVpn = (HashSet<String>) mAllowedAppsVpn.clone();
         return copy;
@@ -735,12 +732,12 @@ public class VpnProfile implements Serializable, Cloneable {
 
 
     class NoCertReturnedException extends Exception {
-        public NoCertReturnedException (String msg) {
+        public NoCertReturnedException(String msg) {
             super(msg);
         }
     }
 
-    synchronized String[] getKeyStoreCertificates(Context context,int tries) {
+    synchronized String[] getKeyStoreCertificates(Context context, int tries) {
         try {
             PrivateKey privateKey = KeyChain.getPrivateKey(context, mAlias);
             mPrivateKey = privateKey;
@@ -749,7 +746,7 @@ public class VpnProfile implements Serializable, Cloneable {
 
 
             X509Certificate[] caChain = KeyChain.getCertificateChain(context, mAlias);
-            if(caChain == null)
+            if (caChain == null)
                 throw new NoCertReturnedException("No certificate returned from Keystore");
 
             if (caChain.length <= 1 && TextUtils.isEmpty(mCaFilename)) {
@@ -774,10 +771,10 @@ public class VpnProfile implements Serializable, Cloneable {
                     StringWriter caoutWriter = new StringWriter();
                     PemWriter pw = new PemWriter(caoutWriter);
 
-                    for (Certificate cert: cacerts)
+                    for (Certificate cert : cacerts)
                         pw.writeObject(new PemObject("CERTIFICATE", cert.getEncoded()));
                     pw.close();
-                    caout= caoutWriter.toString();
+                    caout = caoutWriter.toString();
 
                 } catch (Exception e) {
                     VpnStatus.logError("Could not read CA certificate" + e.getLocalizedMessage());
@@ -800,12 +797,12 @@ public class VpnProfile implements Serializable, Cloneable {
 
 
             String ca, extra;
-            if(caout==null) {
-                ca =keystoreChain;
-                extra=null;
+            if (caout == null) {
+                ca = keystoreChain;
+                extra = null;
             } else {
                 ca = caout;
-                extra=keystoreChain;
+                extra = keystoreChain;
             }
 
             return new String[]{ca, extra, user};
@@ -823,15 +820,15 @@ public class VpnProfile implements Serializable, Cloneable {
             return null;
 
         } catch (AssertionError e) {
-            if (tries ==0)
+            if (tries == 0)
                 return null;
-            VpnStatus.logError(String.format("Failure getting Keystore Keys (%s), retrying",e.getLocalizedMessage()));
+            VpnStatus.logError(String.format("Failure getting Keystore Keys (%s), retrying", e.getLocalizedMessage()));
             try {
                 Thread.sleep(3000);
             } catch (InterruptedException e1) {
                 VpnStatus.logException(e1);
             }
-            return getKeyStoreCertificates(context, tries-1);
+            return getKeyStoreCertificates(context, tries - 1);
         }
 
     }
@@ -848,20 +845,32 @@ public class VpnProfile implements Serializable, Cloneable {
                 return R.string.ipv4_format_error;
         }
         if (!mUseDefaultRoute) {
-            if (!TextUtils.isEmpty(mCustomRoutes) &&  getCustomRoutes(mCustomRoutes).size() == 0 )
+            if (!TextUtils.isEmpty(mCustomRoutes) && getCustomRoutes(mCustomRoutes).size() == 0)
                 return R.string.custom_route_format_error;
 
-            if (!TextUtils.isEmpty(mExcludedRoutes) &&  getCustomRoutes(mExcludedRoutes).size() == 0 )
+            if (!TextUtils.isEmpty(mExcludedRoutes) && getCustomRoutes(mExcludedRoutes).size() == 0)
                 return R.string.custom_route_format_error;
 
         }
 
+        if (mUseTLSAuth && TextUtils.isEmpty(mTLSAuthFilename))
+            return R.string.missing_tlsauth;
+
+        if ((mAuthenticationType == TYPE_USERPASS_CERTIFICATES || mAuthenticationType == TYPE_CERTIFICATES)
+                && (TextUtils.isEmpty(mClientCertFilename) || TextUtils.isEmpty(mClientKeyFilename)))
+            return R.string.missing_certificates;
+
+        if ((mAuthenticationType == TYPE_CERTIFICATES || mAuthenticationType == TYPE_USERPASS_CERTIFICATES)
+                && TextUtils.isEmpty(mCaFilename))
+            return R.string.missing_ca_certificate;
+
+
         boolean noRemoteEnabled = true;
         for (Connection c : mConnections)
             if (c.mEnabled)
                 noRemoteEnabled = false;
 
-        if(noRemoteEnabled)
+        if (noRemoteEnabled)
             return R.string.remote_no_server_selected;
 
         // Everything okay
@@ -956,7 +965,7 @@ public class VpnProfile implements Serializable, Cloneable {
 
         if (isUserPWAuth() &&
                 (TextUtils.isEmpty(mUsername) ||
-                (TextUtils.isEmpty(mPassword) && (mTransientPW == null  || ignoreTransient)))) {
+                        (TextUtils.isEmpty(mPassword) && (mTransientPW == null || ignoreTransient)))) {
             return R.string.password;
         }
         return 0;
diff --git a/app/src/main/java/de/blinkt/openvpn/activities/DisconnectVPN.java b/app/src/main/java/de/blinkt/openvpn/activities/DisconnectVPN.java
index f55de486..d25bccad 100644
--- a/app/src/main/java/de/blinkt/openvpn/activities/DisconnectVPN.java
+++ b/app/src/main/java/de/blinkt/openvpn/activities/DisconnectVPN.java
@@ -81,7 +81,7 @@ public class DisconnectVPN extends Activity implements DialogInterface.OnClickLi
         if (which == DialogInterface.BUTTON_POSITIVE) {
             ProfileManager.setConntectedVpnProfileDisconnected(this);
             if (mService != null && mService.getManagement() != null)
-                mService.getManagement().stopVPN();
+                mService.getManagement().stopVPN(false);
         }
         finish();
     }
diff --git a/app/src/main/java/de/blinkt/openvpn/core/ConfigParser.java b/app/src/main/java/de/blinkt/openvpn/core/ConfigParser.java
index 80a15c54..d14e643e 100644
--- a/app/src/main/java/de/blinkt/openvpn/core/ConfigParser.java
+++ b/app/src/main/java/de/blinkt/openvpn/core/ConfigParser.java
@@ -32,8 +32,6 @@ public class ConfigParser {
     private HashMap<String, Vector<Vector<String>>> options = new HashMap<String, Vector<Vector<String>>>();
     private HashMap<String, Vector<String>> meta = new HashMap<String, Vector<String>>();
     private String auth_user_pass_file;
-    private String crl_verify_file;
-
 
     public void parseConfig(Reader reader) throws IOException, ConfigParseError {
 
@@ -132,10 +130,6 @@ public class ConfigParser {
         return auth_user_pass_file;
     }
 
-    public String getCrlVerifyFile() {
-        return crl_verify_file;
-    }
-
     enum linestate {
         initial,
         readin_single_quote, reading_quoted, reading_unquoted, done
@@ -299,7 +293,8 @@ public class ConfigParser {
             {
                     {"setenv", "IV_GUI_VER"},
                     {"setenv", "IV_OPENVPN_GUI_VERSION"},
-                    {"engine", "dynamic"}
+                    {"engine", "dynamic"},
+                    {"setenv", "CLIENT_CERT"}
             };
 
     final String[] connectionOptions = {
@@ -621,11 +616,12 @@ public class ConfigParser {
         Vector<String> crlfile = getOption("crl-verify", 1, 2);
         if (crlfile != null) {
             // If the 'dir' parameter is present just add it as custom option ..
-            np.mCustomConfigOptions += TextUtils.join(" ", crlfile) + "\n";
-            if (crlfile.size() == 2) {
+            if (crlfile.size() == 3 && crlfile.get(2).equals("dir"))
+                np.mCustomConfigOptions += TextUtils.join(" ", crlfile) + "\n";
+            else
                 // Save the filename for the config converter to add later
-                crl_verify_file = crlfile.get(1);
-            }
+                np.mCrlFilename = crlfile.get(1);
+
         }
 
 
@@ -813,16 +809,6 @@ public class ConfigParser {
         }
     }
 
-    public static void removeCRLCustomOption(VpnProfile np) {
-        String lines[] = np.mCustomConfigOptions.split("\\r?\\n");
-        Vector<String> keeplines = new Vector<>();
-        for (String l : lines) {
-            if (!l.startsWith("crl-verify "))
-                keeplines.add(l);
-        }
-        np.mCustomConfigOptions = TextUtils.join("\n", keeplines);
-    }
-
     private void checkIgnoreAndInvalidOptions(VpnProfile np) throws ConfigParseError {
         for (String option : unsupportedOptions)
             if (options.containsKey(option))
diff --git a/app/src/main/java/de/blinkt/openvpn/core/LogFileHandler.java b/app/src/main/java/de/blinkt/openvpn/core/LogFileHandler.java
index 5c1741d9..288c7934 100644
--- a/app/src/main/java/de/blinkt/openvpn/core/LogFileHandler.java
+++ b/app/src/main/java/de/blinkt/openvpn/core/LogFileHandler.java
@@ -11,12 +11,15 @@ import android.os.Message;
 import android.os.Parcel;
 
 import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.Locale;
+
+import se.leap.bitmaskclient.R;
 
 /**
  * Created by arne on 23.01.16.
@@ -27,7 +30,6 @@ class LogFileHandler extends Handler {
     static final int LOG_INIT = 102;
     public static final int LOG_MESSAGE = 103;
     private static FileOutputStream mLogFile;
-    private static BufferedOutputStream mBufLogfile;
 
     public static final String LOGFILE_NAME = "logcache.dat";
 
@@ -41,6 +43,8 @@ class LogFileHandler extends Handler {
     public void handleMessage(Message msg) {
         try {
             if (msg.what == LOG_INIT) {
+                if (mLogFile != null)
+                    throw new RuntimeException("mLogFile not null");
                 readLogCache((File) msg.obj);
                 openLogFile((File) msg.obj);
             } else if (msg.what == LOG_MESSAGE && msg.obj instanceof VpnStatus.LogItem) {
@@ -70,15 +74,13 @@ class LogFileHandler extends Handler {
 
     private static void trimLogFile() {
         try {
-            mBufLogfile.flush();
+            mLogFile.flush();
             mLogFile.getChannel().truncate(0);
-
         } catch (IOException e) {
             e.printStackTrace();
         }
     }
 
-
     private void writeLogItemToDisk(VpnStatus.LogItem li) throws IOException {
         Parcel p = Parcel.obtain();
         li.writeToParcel(p, 0);
@@ -86,8 +88,8 @@ class LogFileHandler extends Handler {
         // write binary format to disc
         byte[] liBytes = p.marshall();
 
-        mLogFile.write(liBytes.length & 0xff);
-        mLogFile.write(liBytes.length >> 8);
+        byte[] lenBytes = ByteBuffer.allocate(4).putInt(liBytes.length).array();
+        mLogFile.write(lenBytes);
         mLogFile.write(liBytes);
         p.recycle();
     }
@@ -95,39 +97,56 @@ class LogFileHandler extends Handler {
     private void openLogFile (File cacheDir) throws FileNotFoundException {
         File logfile = new File(cacheDir, LOGFILE_NAME);
         mLogFile = new FileOutputStream(logfile);
-        mBufLogfile = new BufferedOutputStream(mLogFile);
     }
 
     private void readLogCache(File cacheDir) {
         File logfile = new File(cacheDir, LOGFILE_NAME);
 
+
         if (!logfile.exists() || !logfile.canRead())
             return;
 
-        VpnStatus.logDebug("Reread log items from cache file");
+
 
         try {
+
             BufferedInputStream logFile = new BufferedInputStream(new FileInputStream(logfile));
 
             byte[] buf = new byte[8192];
-            int read = logFile.read(buf, 0, 2);
+            int read = logFile.read(buf, 0, 4);
+            int itemsRead=0;
 
-            while (read > 0) {
-                // Marshalled LogItem
-                int len = (0xff & buf[0]) | buf[1] << 8;
+            while (read >= 4) {
+                int len = ByteBuffer.wrap(buf, 0, 4).asIntBuffer().get();
 
+                // Marshalled LogItem
                 read = logFile.read(buf, 0, len);
 
                 Parcel p = Parcel.obtain();
                 p.unmarshall(buf, 0, read);
                 p.setDataPosition(0);
                 VpnStatus.LogItem li = VpnStatus.LogItem.CREATOR.createFromParcel(p);
-                VpnStatus.newLogItem(li, true);
+                if (li.verify()) {
+                    VpnStatus.newLogItem(li, true);
+                } else {
+                    VpnStatus.logError(String.format(Locale.getDefault(),
+                            "Could not read log item from file: %d/%d: %s",
+                            read, len, bytesToHex(buf, Math.max(read,80))));
+                }
                 p.recycle();
 
                 //Next item
-                read = logFile.read(buf, 0, 2);
+                read = logFile.read(buf, 0, 4);
+                itemsRead++;
+                if (itemsRead > 2*VpnStatus.MAXLOGENTRIES) {
+                    VpnStatus.logError("Too many logentries read from cache, aborting.");
+                    read = 0;
+                }
+
             }
+            VpnStatus.logDebug(R.string.reread_log, itemsRead);
+
+
 
         } catch (java.io.IOException | java.lang.RuntimeException e) {
             VpnStatus.logError("Reading cached logfile failed");
@@ -137,4 +156,17 @@ class LogFileHandler extends Handler {
         }
     }
 
+    final protected static char[] hexArray = "0123456789ABCDEF".toCharArray();
+    public static String bytesToHex(byte[] bytes, int len) {
+        len = Math.min(bytes.length, len);
+        char[] hexChars = new char[len * 2];
+        for ( int j = 0; j < len; j++ ) {
+            int v = bytes[j] & 0xFF;
+            hexChars[j * 2] = hexArray[v >>> 4];
+            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
+        }
+        return new String(hexChars);
+    }
+
+
 }
diff --git a/app/src/main/java/de/blinkt/openvpn/core/OpenVPNManagement.java b/app/src/main/java/de/blinkt/openvpn/core/OpenVPNManagement.java
index 2771fa6a..2911fb1e 100644
--- a/app/src/main/java/de/blinkt/openvpn/core/OpenVPNManagement.java
+++ b/app/src/main/java/de/blinkt/openvpn/core/OpenVPNManagement.java
@@ -16,15 +16,19 @@ public interface OpenVPNManagement {
         screenOff
     }
 
-	int mBytecountInterval =2;
+    int mBytecountInterval = 2;
 
-	void reconnect();
+    void reconnect();
 
-	void pause(pauseReason reason);
+    void pause(pauseReason reason);
 
-	void resume();
+    void resume();
 
-	boolean stopVPN();
+    /**
+     * @param replaceConnection True if the VPN is connected by a new connection.
+     * @return true if there was a process that has been send a stop signal
+     */
+    boolean stopVPN(boolean replaceConnection);
 
     /*
      * Rebind the interface
diff --git a/app/src/main/java/de/blinkt/openvpn/core/OpenVPNService.java b/app/src/main/java/de/blinkt/openvpn/core/OpenVPNService.java
index 17be29b0..2917bce1 100644
--- a/app/src/main/java/de/blinkt/openvpn/core/OpenVPNService.java
+++ b/app/src/main/java/de/blinkt/openvpn/core/OpenVPNService.java
@@ -32,6 +32,7 @@ import android.text.TextUtils;
 import android.util.Log;
 import android.widget.Toast;
 
+import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.net.Inet6Address;
@@ -87,6 +88,7 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
     private final Object mProcessLock = new Object();
     private Handler guiHandler;
     private Toast mlastToast;
+    private Runnable mOpenVPNThread;
 
     // From: http://stackoverflow.com/questions/3758606/how-to-convert-byte-size-into-human-readable-format-in-java
     public static String humanReadableByteCount(long bytes, boolean mbit) {
@@ -116,7 +118,7 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
     @Override
     public void onRevoke() {
         VpnStatus.logInfo(R.string.permission_revoked);
-        mManagement.stopVPN();
+        mManagement.stopVPN(false);
         endVpnService();
     }
 
@@ -132,6 +134,7 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
         VpnStatus.removeByteCountListener(this);
         unregisterDeviceStateReceiver();
         ProfileManager.setConntectedVpnProfileDisconnected(this);
+        mOpenVPNThread = null;
         if (!mStarting) {
             stopForeground(!mNotificationAlwaysVisible);
 
@@ -182,16 +185,16 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
 
 
         mNotificationManager.notify(OPENVPN_STATUS, notification);
-        //startForeground(OPENVPN_STATUS, notification);
+        // startForeground(OPENVPN_STATUS, notification);
 
         // Check if running on a TV
-        if(runningOnAndroidTV() && !lowpriority)
+        if (runningOnAndroidTV() && !lowpriority)
             guiHandler.post(new Runnable() {
 
                 @Override
                 public void run() {
 
-                    if (mlastToast!=null)
+                    if (mlastToast != null)
                         mlastToast.cancel();
                     String toastText = String.format(Locale.getDefault(), "%s - %s", mProfile.mName, msg);
                     mlastToast = Toast.makeText(getBaseContext(), toastText, Toast.LENGTH_SHORT);
@@ -378,38 +381,50 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
             mProfile = ProfileManager.get(this, profileUUID);
         }
 
+        /* start the OpenVPN process itself in a background thread */
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                startOpenVPN();
+            }
+        }).start();
+
+
+        ProfileManager.setConnectedVpnProfile(this, mProfile);
+        /* TODO: At the moment we have no way to handle asynchronous PW input
+         * Fixing will also allow to handle challenge/response authentication */
+        if (mProfile.needUserPWInput(true) != 0)
+            return START_NOT_STICKY;
+
+        return START_STICKY;
+    }
+
+    private void startOpenVPN() {
+        VpnStatus.logInfo(R.string.building_configration);
+        VpnStatus.updateStateString("VPN_GENERATE_CONFIG", "", R.string.building_configration, VpnStatus.ConnectionStatus.LEVEL_START);
+
+
+        try {
+            mProfile.writeConfigFile(this);
+        } catch (IOException e) {
+            VpnStatus.logException("Error writing config file", e);
+            endVpnService();
+            return;
+        }
 
         // Extract information from the intent.
         String prefix = getPackageName();
-        String[] argv = intent.getStringArrayExtra(prefix + ".ARGV");
-        String nativeLibraryDirectory = intent.getStringExtra(prefix + ".nativelib");
+        String nativeLibraryDirectory = getApplicationInfo().nativeLibraryDir;
+
+        // Also writes OpenVPN binary
+        String[] argv = VPNLaunchHelper.buildOpenvpnArgv(this);
 
-        String startTitle = getString(R.string.start_vpn_title, mProfile.mName);
-        String startTicker = getString(R.string.start_vpn_ticker, mProfile.mName);
-        showNotification(startTitle, startTicker,
-                false, 0, LEVEL_CONNECTING_NO_SERVER_REPLY_YET);
 
         // Set a flag that we are starting a new VPN
         mStarting = true;
         // Stop the previous session by interrupting the thread.
-        if (mManagement != null && mManagement.stopVPN())
-            // an old was asked to exit, wait 1s
-            try {
-                Thread.sleep(1000);
-            } catch (InterruptedException e) {
-                //ignore
-            }
 
-        synchronized (mProcessLock) {
-            if (mProcessThread != null) {
-                mProcessThread.interrupt();
-                try {
-                    Thread.sleep(1000);
-                } catch (InterruptedException e) {
-                    //ignore
-                }
-            }
-        }
+        stopOldOpenVPNProcess();
         // An old running VPN should now be exited
         mStarting = false;
 
@@ -420,10 +435,8 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
         if (!"ovpn3".equals(BuildConfig.FLAVOR))
             mOvpn3 = false;
 
-
         // Open the Management Interface
         if (!mOvpn3) {
-
             // start a Thread that handles incoming messages of the managment socket
             OpenVpnManagementThread ovpnManagementThread = new OpenVpnManagementThread(mProfile, this);
             if (ovpnManagementThread.openManagementInterface(this)) {
@@ -433,13 +446,15 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
                 mManagement = ovpnManagementThread;
                 VpnStatus.logInfo("started Socket Thread");
             } else {
-                return START_NOT_STICKY;
+                endVpnService();
+                return;
             }
         }
 
-
         Runnable processThread;
-        if (mOvpn3) {
+        if (mOvpn3)
+
+        {
 
             OpenVPNManagement mOpenVPN3 = instantiateOpenVPN3Core();
             processThread = (Runnable) mOpenVPN3;
@@ -449,25 +464,53 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
         } else {
             HashMap<String, String> env = new HashMap<>();
             processThread = new OpenVPNThread(this, argv, env, nativeLibraryDirectory);
+            mOpenVPNThread = processThread;
         }
 
-        synchronized (mProcessLock) {
+        synchronized (mProcessLock)
+
+        {
             mProcessThread = new Thread(processThread, "OpenVPNProcessThread");
             mProcessThread.start();
         }
-        if (mDeviceStateReceiver != null)
-            unregisterDeviceStateReceiver();
 
-        registerDeviceStateReceiver(mManagement);
+        new Handler(getMainLooper()).post(new Runnable() {
+                         @Override
+                         public void run() {
+                             if (mDeviceStateReceiver != null)
+                                 unregisterDeviceStateReceiver();
 
+                             registerDeviceStateReceiver(mManagement);
+                         }
+                     }
 
-        ProfileManager.setConnectedVpnProfile(this, mProfile);
-        /* TODO: At the moment we have no way to handle asynchronous PW input
-         * Fixing will also allow to handle challenge/response authentication */
-        if (mProfile.needUserPWInput(true) != 0)
-            return START_NOT_STICKY;
+                );
+    }
 
-        return START_STICKY;
+    private void stopOldOpenVPNProcess() {
+        if (mManagement != null) {
+            if (mOpenVPNThread!=null)
+                ((OpenVPNThread) mOpenVPNThread).setReplaceConnection();
+            if (mManagement.stopVPN(true)) {
+                // an old was asked to exit, wait 1s
+                try {
+                    Thread.sleep(1000);
+                } catch (InterruptedException e) {
+                    //ignore
+                }
+            }
+        }
+
+        synchronized (mProcessLock) {
+            if (mProcessThread != null) {
+                mProcessThread.interrupt();
+                try {
+                    Thread.sleep(1000);
+                } catch (InterruptedException e) {
+                    //ignore
+                }
+            }
+        }
     }
 
     private OpenVPNManagement instantiateOpenVPN3Core() {
@@ -475,7 +518,7 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
             Class cl = Class.forName("de.blinkt.openvpn.core.OpenVPNThreadv3");
             return (OpenVPNManagement) cl.getConstructor(OpenVPNService.class, VpnProfile.class).newInstance(this, mProfile);
         } catch (IllegalArgumentException | InstantiationException | InvocationTargetException |
-                NoSuchMethodException | ClassNotFoundException | IllegalAccessException e ) {
+                NoSuchMethodException | ClassNotFoundException | IllegalAccessException e) {
             e.printStackTrace();
         }
         return null;
@@ -485,7 +528,7 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
     public void onDestroy() {
         synchronized (mProcessLock) {
             if (mProcessThread != null) {
-                mManagement.stopVPN();
+                mManagement.stopVPN(true);
             }
         }
 
@@ -581,7 +624,7 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
             // Check if the first DNS Server is in the VPN range
             try {
                 ipAddress dnsServer = new ipAddress(new CIDRIP(mDnslist.get(0), 32), true);
-                boolean dnsIncluded=false;
+                boolean dnsIncluded = false;
                 for (ipAddress net : positiveIPv4Routes) {
                     if (net.containsNet(dnsServer)) {
                         dnsIncluded = true;
@@ -620,8 +663,6 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
         }
 
 
-
-
         if (mDomain != null)
             builder.addSearchDomain(mDomain);
 
@@ -716,7 +757,7 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
 
     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
     private void setAllowedVpnPackages(Builder builder) {
-        boolean atLeastOneAllowedApp=false;
+        boolean atLeastOneAllowedApp = false;
         for (String pkg : mProfile.mAllowedAppsVpn) {
             try {
                 if (mProfile.mAllowedAppsVpnAreDisallowed) {
@@ -910,7 +951,7 @@ public class OpenVPNService extends VpnService implements StateListener, Callbac
             // Does not work :(
             String msg = getString(resid);
             // showNotification(VpnStatus.getLastCleanLogMessage(this),
-                    // msg, lowpriority, 0, level);
+            //      msg, lowpriority, 0, level);
 
         }
     }
diff --git a/app/src/main/java/de/blinkt/openvpn/core/OpenVPNThread.java b/app/src/main/java/de/blinkt/openvpn/core/OpenVPNThread.java
index 10bc9e87..e0c39546 100644
--- a/app/src/main/java/de/blinkt/openvpn/core/OpenVPNThread.java
+++ b/app/src/main/java/de/blinkt/openvpn/core/OpenVPNThread.java
@@ -34,51 +34,56 @@ public class OpenVPNThread implements Runnable {
     @SuppressLint("SdCardPath")
     private static final String BROKEN_PIE_SUPPORT = "/data/data/de.blinkt.openvpn/cache/pievpn";
     private final static String BROKEN_PIE_SUPPORT2 = "syntax error";
-	private static final String TAG = "OpenVPN";
+    private static final String TAG = "OpenVPN";
     public static final int M_FATAL = (1 << 4);
     public static final int M_NONFATAL = (1 << 5);
     public static final int M_WARN = (1 << 6);
     public static final int M_DEBUG = (1 << 7);
     private String[] mArgv;
-	private Process mProcess;
-	private String mNativeDir;
-	private OpenVPNService mService;
-	private String mDumpPath;
-	private Map<String, String> mProcessEnv;
-    private boolean mBrokenPie=false;
-
-    public OpenVPNThread(OpenVPNService service,String[] argv, Map<String,String> processEnv, String nativelibdir)
-	{
-		mArgv = argv;
-		mNativeDir = nativelibdir;
-		mService = service;
-		mProcessEnv = processEnv;
-	}
-	
-	public void stopProcess() {
-		mProcess.destroy();
-	}
-	
-	@Override
-	public void run() {
-		try {
-			Log.i(TAG, "Starting openvpn");			
-			startOpenVPNThreadArgs(mArgv, mProcessEnv);
-			Log.i(TAG, "Giving up");
-		} catch (Exception e) {
-            VpnStatus.logException("Starting OpenVPN Thread" ,e);
-			Log.e(TAG, "OpenVPNThread Got " + e.toString());
-		} finally {
-			int exitvalue = 0;
-			try {
-				if (mProcess!=null)
-					exitvalue = mProcess.waitFor();
-			} catch ( IllegalThreadStateException ite) {
-				VpnStatus.logError("Illegal Thread state: " + ite.getLocalizedMessage());
-			} catch (InterruptedException ie) {
-				VpnStatus.logError("InterruptedException: " + ie.getLocalizedMessage());
-			}
-			if( exitvalue != 0) {
+    private Process mProcess;
+    private String mNativeDir;
+    private OpenVPNService mService;
+    private String mDumpPath;
+    private Map<String, String> mProcessEnv;
+    private boolean mBrokenPie = false;
+    private boolean mNoProcessExitStatus = false;
+
+    public OpenVPNThread(OpenVPNService service, String[] argv, Map<String, String> processEnv, String nativelibdir) {
+        mArgv = argv;
+        mNativeDir = nativelibdir;
+        mService = service;
+        mProcessEnv = processEnv;
+    }
+
+    public void stopProcess() {
+        mProcess.destroy();
+    }
+
+    void setReplaceConnection()
+    {
+        mNoProcessExitStatus=true;
+    }
+
+    @Override
+    public void run() {
+        try {
+            Log.i(TAG, "Starting openvpn");
+            startOpenVPNThreadArgs(mArgv, mProcessEnv);
+            Log.i(TAG, "OpenVPN process exited");
+        } catch (Exception e) {
+            VpnStatus.logException("Starting OpenVPN Thread", e);
+            Log.e(TAG, "OpenVPNThread Got " + e.toString());
+        } finally {
+            int exitvalue = 0;
+            try {
+                if (mProcess != null)
+                    exitvalue = mProcess.waitFor();
+            } catch (IllegalThreadStateException ite) {
+                VpnStatus.logError("Illegal Thread state: " + ite.getLocalizedMessage());
+            } catch (InterruptedException ie) {
+                VpnStatus.logError("InterruptedException: " + ie.getLocalizedMessage());
+            }
+            if (exitvalue != 0) {
                 VpnStatus.logError("Process exited with exit value " + exitvalue);
                 if (mBrokenPie) {
                     /* This will probably fail since the NoPIE binary is probably not written */
@@ -95,70 +100,72 @@ public class OpenVPNThread implements Runnable {
                 }
 
             }
-			
-			VpnStatus.updateStateString("NOPROCESS", "No process running.", R.string.state_noprocess, ConnectionStatus.LEVEL_NOTCONNECTED);
-			if(mDumpPath!=null) {
-				try {
-					BufferedWriter logout = new BufferedWriter(new FileWriter(mDumpPath + ".log"));
-					SimpleDateFormat timeformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss",Locale.GERMAN);
-					for(LogItem li : VpnStatus.getlogbuffer()){
-						String time = timeformat.format(new Date(li.getLogtime()));
-						logout.write(time +" " + li.getString(mService) + "\n");
-					}
-					logout.close();
-					VpnStatus.logError(R.string.minidump_generated);
-				} catch (IOException e) {
-					VpnStatus.logError("Writing minidump log: " + e.getLocalizedMessage());
-				}
-			}
-
-			mService.processDied();
-			Log.i(TAG, "Exiting");
-		}
-	}
-	
-	private void startOpenVPNThreadArgs(String[] argv, Map<String, String> env) {
-		LinkedList<String> argvlist = new LinkedList<String>();
+
+            if (!mNoProcessExitStatus)
+                VpnStatus.updateStateString("NOPROCESS", "No process running.", R.string.state_noprocess, ConnectionStatus.LEVEL_NOTCONNECTED);
+
+            if (mDumpPath != null) {
+                try {
+                    BufferedWriter logout = new BufferedWriter(new FileWriter(mDumpPath + ".log"));
+                    SimpleDateFormat timeformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.GERMAN);
+                    for (LogItem li : VpnStatus.getlogbuffer()) {
+                        String time = timeformat.format(new Date(li.getLogtime()));
+                        logout.write(time + " " + li.getString(mService) + "\n");
+                    }
+                    logout.close();
+                    VpnStatus.logError(R.string.minidump_generated);
+                } catch (IOException e) {
+                    VpnStatus.logError("Writing minidump log: " + e.getLocalizedMessage());
+                }
+            }
+
+            mService.processDied();
+            Log.i(TAG, "Exiting");
+        }
+    }
+
+    private void startOpenVPNThreadArgs(String[] argv, Map<String, String> env) {
+        LinkedList<String> argvlist = new LinkedList<String>();
 
         Collections.addAll(argvlist, argv);
-	
-		ProcessBuilder pb = new ProcessBuilder(argvlist);
-		// Hack O rama
-		
-		String lbpath = genLibraryPath(argv, pb);
-		
-		pb.environment().put("LD_LIBRARY_PATH", lbpath);
-
-		// Add extra variables
-		for(Entry<String,String> e:env.entrySet()){
-			pb.environment().put(e.getKey(), e.getValue());
-		}
-		pb.redirectErrorStream(true);
-		try {
-			mProcess = pb.start();
-			// Close the output, since we don't need it
-			mProcess.getOutputStream().close();
-			InputStream in = mProcess.getInputStream();
-			BufferedReader br = new BufferedReader(new InputStreamReader(in));
-				
-			while(true) {
-				String logline = br.readLine();
-				if(logline==null) 
-					return;
-
-				if (logline.startsWith(DUMP_PATH_STRING))
-					mDumpPath = logline.substring(DUMP_PATH_STRING.length());
+
+        ProcessBuilder pb = new ProcessBuilder(argvlist);
+        // Hack O rama
+
+        String lbpath = genLibraryPath(argv, pb);
+
+        pb.environment().put("LD_LIBRARY_PATH", lbpath);
+
+        // Add extra variables
+        for (Entry<String, String> e : env.entrySet()) {
+            pb.environment().put(e.getKey(), e.getValue());
+        }
+        pb.redirectErrorStream(true);
+        try {
+            mProcess = pb.start();
+            // Close the output, since we don't need it
+            mProcess.getOutputStream().close();
+            InputStream in = mProcess.getInputStream();
+            BufferedReader br = new BufferedReader(new InputStreamReader(in));
+
+            while (true) {
+                String logline = br.readLine();
+                if (logline == null)
+                    return;
+
+                if (logline.startsWith(DUMP_PATH_STRING))
+                    mDumpPath = logline.substring(DUMP_PATH_STRING.length());
 
                 if (logline.startsWith(BROKEN_PIE_SUPPORT) || logline.contains(BROKEN_PIE_SUPPORT2))
                     mBrokenPie = true;
-					
+
 
                 // 1380308330.240114 18000002 Send to HTTP proxy: 'X-Online-Host: bla.blabla.com'
 
                 Pattern p = Pattern.compile("(\\d+).(\\d+) ([0-9a-f])+ (.*)");
                 Matcher m = p.matcher(logline);
-                if(m.matches()) {
-                    int flags = Integer.parseInt(m.group(3),16);
+                if (m.matches()) {
+                    int flags = Integer.parseInt(m.group(3), 16);
                     String msg = m.group(4);
                     int logLevel = flags & 0x0F;
 
@@ -166,45 +173,45 @@ public class OpenVPNThread implements Runnable {
 
                     if ((flags & M_FATAL) != 0)
                         logStatus = VpnStatus.LogLevel.ERROR;
-                    else if ((flags & M_NONFATAL)!=0)
+                    else if ((flags & M_NONFATAL) != 0)
                         logStatus = VpnStatus.LogLevel.WARNING;
-                    else if ((flags & M_WARN)!=0)
+                    else if ((flags & M_WARN) != 0)
                         logStatus = VpnStatus.LogLevel.WARNING;
-                    else if ((flags & M_DEBUG)!=0)
+                    else if ((flags & M_DEBUG) != 0)
                         logStatus = VpnStatus.LogLevel.VERBOSE;
 
                     if (msg.startsWith("MANAGEMENT: CMD"))
                         logLevel = Math.max(4, logLevel);
 
 
-                    VpnStatus.logMessageOpenVPN(logStatus,logLevel,msg);
+                    VpnStatus.logMessageOpenVPN(logStatus, logLevel, msg);
                 } else {
                     VpnStatus.logInfo("P:" + logline);
                 }
-			}
-			
-		
-		} catch (IOException e) {
-			VpnStatus.logException("Error reading from output of OpenVPN process" , e);
-			stopProcess();
-		}
-		
-		
-	}
-
-	private String genLibraryPath(String[] argv, ProcessBuilder pb) {
-		// Hack until I find a good way to get the real library path
-		String applibpath = argv[0].replaceFirst("/cache/.*$"  , "/lib");
-		
-		String lbpath = pb.environment().get("LD_LIBRARY_PATH");
-		if(lbpath==null) 
-			lbpath = applibpath;
-		else
-			lbpath = applibpath + ":" + lbpath;
-		
-		if (!applibpath.equals(mNativeDir)) {
-			lbpath =  mNativeDir + ":" + lbpath;
-		}
-		return lbpath;
-	}
+            }
+
+
+        } catch (IOException e) {
+            VpnStatus.logException("Error reading from output of OpenVPN process", e);
+            stopProcess();
+        }
+
+
+    }
+
+    private String genLibraryPath(String[] argv, ProcessBuilder pb) {
+        // Hack until I find a good way to get the real library path
+        String applibpath = argv[0].replaceFirst("/cache/.*$", "/lib");
+
+        String lbpath = pb.environment().get("LD_LIBRARY_PATH");
+        if (lbpath == null)
+            lbpath = applibpath;
+        else
+            lbpath = applibpath + ":" + lbpath;
+
+        if (!applibpath.equals(mNativeDir)) {
+            lbpath = mNativeDir + ":" + lbpath;
+        }
+        return lbpath;
+    }
 }
diff --git a/app/src/main/java/de/blinkt/openvpn/core/OpenVpnManagementThread.java b/app/src/main/java/de/blinkt/openvpn/core/OpenVpnManagementThread.java
index 4c550f47..569a3846 100644
--- a/app/src/main/java/de/blinkt/openvpn/core/OpenVpnManagementThread.java
+++ b/app/src/main/java/de/blinkt/openvpn/core/OpenVpnManagementThread.java
@@ -49,6 +49,7 @@ public class OpenVpnManagementThread implements Runnable, OpenVPNManagement {
 
     private pauseReason lastPauseReason = pauseReason.noNetwork;
     private PausedStateCallback mPauseCallback;
+    private boolean mShuttingDown;
 
     public OpenVpnManagementThread(VpnProfile profile, OpenVPNService openVpnService) {
         mProfile = profile;
@@ -223,7 +224,8 @@ public class OpenVpnManagementThread implements Runnable, OpenVPNManagement {
                     processByteCount(argument);
                     break;
                 case "STATE":
-                    processState(argument);
+                    if (!mShuttingDown)
+                        processState(argument);
                     break;
                 case "PROXY":
                     processProxyCMD(argument);
@@ -452,7 +454,7 @@ public class OpenVpnManagementThread implements Runnable, OpenVPNManagement {
 
                 break;
             default:
-                Log.e(TAG, "Unkown needok command " + argument);
+                Log.e(TAG, "Unknown needok command " + argument);
                 return;
         }
 
@@ -621,7 +623,9 @@ public class OpenVpnManagementThread implements Runnable, OpenVPNManagement {
     }
 
     @Override
-    public boolean stopVPN() {
+    public boolean stopVPN(boolean replaceConnection) {
+        mShuttingDown = true;
         return stopOpenVPN();
     }
+
 }
diff --git a/app/src/main/java/de/blinkt/openvpn/core/VPNLaunchHelper.java b/app/src/main/java/de/blinkt/openvpn/core/VPNLaunchHelper.java
index f2cf8cec..78f462e7 100644
--- a/app/src/main/java/de/blinkt/openvpn/core/VPNLaunchHelper.java
+++ b/app/src/main/java/de/blinkt/openvpn/core/VPNLaunchHelper.java
@@ -27,7 +27,7 @@ public class VPNLaunchHelper {
 
 
 
-    static private String writeMiniVPN(Context context) {
+    private static String writeMiniVPN(Context context) {
         String[] abis;
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
             abis = getSupportedABIsLollipop();
@@ -73,12 +73,18 @@ public class VPNLaunchHelper {
     }
 
 
-    public static String[] buildOpenvpnArgv(Context c) {
+    static String[] buildOpenvpnArgv(Context c) {
         Vector<String> args = new Vector<>();
 
+        String binaryName = writeMiniVPN(c);
         // Add fixed paramenters
         //args.add("/data/data/de.blinkt.openvpn/lib/openvpn");
-        args.add(writeMiniVPN(c));
+        if(binaryName==null) {
+            VpnStatus.logError("Error writing minivpn binary");
+            return null;
+        }
+
+        args.add(binaryName);
 
         args.add("--config");
         args.add(getConfigFilePath(c));
@@ -126,14 +132,6 @@ public class VPNLaunchHelper {
 	
 
 	public static void startOpenVpn(VpnProfile startprofile, Context context) {
-        VpnStatus.logInfo(R.string.building_configration);
-        VpnStatus.updateStateString("VPN_GENERATE_CONFIG", "", R.string.building_configration, VpnStatus.ConnectionStatus.LEVEL_START);
-        if(writeMiniVPN(context)==null) {
-			VpnStatus.logError("Error writing minivpn binary");
-			return;
-		}
-
-
 		Intent startVPN = startprofile.prepareStartService(context);
 		if(startVPN!=null)
 			context.startService(startVPN);
diff --git a/app/src/main/java/de/blinkt/openvpn/core/VpnStatus.java b/app/src/main/java/de/blinkt/openvpn/core/VpnStatus.java
index 3ac1595c..1e2ccba3 100644
--- a/app/src/main/java/de/blinkt/openvpn/core/VpnStatus.java
+++ b/app/src/main/java/de/blinkt/openvpn/core/VpnStatus.java
@@ -17,9 +17,12 @@ import android.os.Message;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
+import android.util.Log;
 
 import java.io.ByteArrayInputStream;
+import java.io.DataOutputStream;
 import java.io.File;
+import java.io.OutputStream;
 import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.security.MessageDigest;
@@ -34,6 +37,7 @@ import java.util.Locale;
 import java.util.UnknownFormatConversionException;
 import java.util.Vector;
 
+import se.leap.bitmaskclient.BuildConfig;
 import se.leap.bitmaskclient.R;
 
 public class VpnStatus {
@@ -73,7 +77,7 @@ public class VpnStatus {
         logException(LogLevel.ERROR, context, e);
     }
 
-    private static final int MAXLOGENTRIES = 1000;
+    static final int MAXLOGENTRIES = 1000;
 
 
     public static String getLastCleanLogMessage(Context c) {
@@ -291,7 +295,6 @@ public class VpnStatus {
                         if (mArgs != null)
                             str += TextUtils.join("|", mArgs);
 
-
                         return str;
                     }
                 }
@@ -369,6 +372,16 @@ public class VpnStatus {
             }
             return mVerbosityLevel;
         }
+
+        public boolean verify() {
+            if (mLevel == null)
+                return false;
+
+            if (mMessage == null && mRessourceId == 0)
+                return false;
+
+            return true;
+        }
     }
 
     public interface LogListener {
@@ -575,6 +588,9 @@ public class VpnStatus {
             mLogFileHandler.sendMessage(mLogFileHandler.obtainMessage(LogFileHandler.TRIM_LOG_FILE));
         }
 
+        if (BuildConfig.DEBUG && !cachedLine)
+            Log.d("OpenVPN", logItem.getString(null));
+
 
         for (LogListener ll : logListener) {
             ll.newLog(logItem);
@@ -613,8 +629,8 @@ public class VpnStatus {
     public static synchronized void updateByteCount(long in, long out) {
         long lastIn = mlastByteCount[0];
         long lastOut = mlastByteCount[1];
-        long diffIn = mlastByteCount[2] = in - lastIn;
-        long diffOut = mlastByteCount[3] = out - lastOut;
+        long diffIn = mlastByteCount[2] = Math.max(0, in - lastIn);
+        long diffOut = mlastByteCount[3] = Math.max(0, out - lastOut);
 
 
         mlastByteCount = new long[]{in, out, diffIn, diffOut};
diff --git a/app/src/main/java/de/blinkt/openvpn/fragments/LogFragment.java b/app/src/main/java/de/blinkt/openvpn/fragments/LogFragment.java
index f75e459e..bbd52a34 100644
--- a/app/src/main/java/de/blinkt/openvpn/fragments/LogFragment.java
+++ b/app/src/main/java/de/blinkt/openvpn/fragments/LogFragment.java
@@ -429,34 +429,33 @@ public class LogFragment extends ListFragment implements StateListener, SeekBar.
             Intent intent = new Intent(getActivity(), DisconnectVPN.class);
             startActivity(intent);
             return true;
-        } else if (item.getItemId() == R.id.send) {
-            ladapter.shareLog();
-        } else if (item.getItemId() == R.id.edit_vpn) {
-            VpnProfile lastConnectedprofile = ProfileManager.getLastConnectedVpn();
-
-            if (lastConnectedprofile != null) {
-                Intent vprefintent = new Intent(getActivity(), Dashboard.class)
-                        .putExtra(VpnProfile.EXTRA_PROFILEUUID, lastConnectedprofile.getUUIDString());
-                startActivityForResult(vprefintent, START_VPN_CONFIG);
-            } else {
-                Toast.makeText(getActivity(), R.string.log_no_last_vpn, Toast.LENGTH_LONG).show();
-            }
-        } else if (item.getItemId() == R.id.toggle_time) {
-            showHideOptionsPanel();
-        } else if (item.getItemId() == android.R.id.home) {
-            // This is called when the Home (Up) button is pressed
-            // in the Action Bar.
-            Intent parentActivityIntent = new Intent(getActivity(), Dashboard.class);
-            parentActivityIntent.addFlags(
-                    Intent.FLAG_ACTIVITY_CLEAR_TOP |
-                            Intent.FLAG_ACTIVITY_NEW_TASK);
-            startActivity(parentActivityIntent);
-            getActivity().finish();
-            return true;
-
-        }
-        return super.onOptionsItemSelected(item);
-
+        } else if(item.getItemId()==R.id.send) {
+			ladapter.shareLog();
+	} else if(item.getItemId()==R.id.edit_vpn) {
+	    VpnProfile lastConnectedprofile = ProfileManager.getLastConnectedVpn();
+
+	    if(lastConnectedprofile!=null) {
+		Intent vprefintent = new Intent(getActivity(),Dashboard.class)
+		    .putExtra(VpnProfile.EXTRA_PROFILEUUID,lastConnectedprofile.getUUIDString());
+		startActivityForResult(vprefintent,START_VPN_CONFIG);
+	    } else {
+		Toast.makeText(getActivity(), R.string.log_no_last_vpn, Toast.LENGTH_LONG).show();
+	    }
+	} else if(item.getItemId() == R.id.toggle_time) {
+	    showHideOptionsPanel();
+	} else if(item.getItemId() == android.R.id.home) {
+	    // This is called when the Home (Up) button is pressed
+	    // in the Action Bar.
+	    Intent parentActivityIntent = new Intent(getActivity(), Dashboard.class);
+	    parentActivityIntent.addFlags(
+					  Intent.FLAG_ACTIVITY_CLEAR_TOP |
+					  Intent.FLAG_ACTIVITY_NEW_TASK);
+	    startActivity(parentActivityIntent);
+	    getActivity().finish();
+	    return true;
+
+	}
+	return super.onOptionsItemSelected(item);
     }
 
     private void showHideOptionsPanel() {