From f622fbfbf3a6f8985f681c268c64d07e7dcd3eb7 Mon Sep 17 00:00:00 2001
From: Arne Schwabe <arne@rfc2549.org>
Date: Tue, 17 Jul 2012 20:17:19 +0200
Subject: Implementier modprobe tun for more braindead images

---
 src/de/blinkt/openvpn/GeneralSettings.java | 13 +++++++++++++
 src/de/blinkt/openvpn/LaunchVPN.java       | 29 ++++++++++++++++++-----------
 2 files changed, 31 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/de/blinkt/openvpn/GeneralSettings.java b/src/de/blinkt/openvpn/GeneralSettings.java
index 24bf2616..b9c412c0 100644
--- a/src/de/blinkt/openvpn/GeneralSettings.java
+++ b/src/de/blinkt/openvpn/GeneralSettings.java
@@ -1,5 +1,8 @@
 package de.blinkt.openvpn;
+import java.io.File;
+
 import android.os.Bundle;
+import android.preference.Preference;
 import android.preference.PreferenceFragment;
 
 public class GeneralSettings extends PreferenceFragment {
@@ -11,6 +14,16 @@ public class GeneralSettings extends PreferenceFragment {
 
 			// Load the preferences from an XML resource
 			addPreferencesFromResource(R.xml.general_settings);
+			Preference loadtun = findPreference("loadTunModule");
+			if(!isTunModuleAvailable())
+				loadtun.setEnabled(false);
+		}
+
+		private boolean isTunModuleAvailable() {
+			// Check if the tun module exists on the file system
+			if(new File("/system/lib/modules/tun.ko").length() > 10)
+				return true;
+			return false;
 		}
 
 	
diff --git a/src/de/blinkt/openvpn/LaunchVPN.java b/src/de/blinkt/openvpn/LaunchVPN.java
index b057a392..7b1c6cce 100644
--- a/src/de/blinkt/openvpn/LaunchVPN.java
+++ b/src/de/blinkt/openvpn/LaunchVPN.java
@@ -350,21 +350,14 @@ public class LaunchVPN extends ListActivity implements OnItemClickListener {
 		// 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(usecm9fix && !mCmfixed ) {
-			ProcessBuilder pb = new ProcessBuilder(new String[] {"su","-c","chown system /dev/tun"});
-			try {
-				Process p = pb.start();
-				int ret = p.waitFor();
-				if(ret ==0)
-					mCmfixed=true;
-			} catch (InterruptedException e) {
-				e.printStackTrace();
-			} catch (IOException e) {
-				e.printStackTrace();
-			}
+			execeuteSUcmd("chown system /dev/tun");
 		}
 
+		if(loadTunModule)
+			execeuteSUcmd("modprobe tun");
 
 
 		if (intent != null) {
@@ -383,6 +376,20 @@ public class LaunchVPN extends ListActivity implements OnItemClickListener {
 
 	}
 
+	private void execeuteSUcmd(String command) {
+		ProcessBuilder pb = new ProcessBuilder(new String[] {"su","-c",command});
+		try {
+			Process p = pb.start();
+			int ret = p.waitFor();
+			if(ret ==0)
+				mCmfixed=true;
+		} catch (InterruptedException e) {
+			e.printStackTrace();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+
 	private class startOpenVpnThread extends Thread {
 
 		@Override
-- 
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