root check method

Dominik · Dominik · commit 06a180741949 · 2012-08-25T20:15:22.000+02:00
diff --git a/README.md b/README.md
@@ -22,6 +22,16 @@ You can enable debug logging in RootCommands by the following line:
 RootCommands.DEBUG = true;
 ```
 
+## Root Access check
+
+This tries to find the su binary, opens a root shell and checks for root uid.
+
+```java
+if (RootCommands.rootAccessGiven()) {
+    // your code
+}
+```
+
 ## Simple Commands
 
 You can instantiate SimpleCommands with the shell commands you want to execute. This is a very basic approach of executing something on a shell.
diff --git a/RootCommands Library/src/org/rootcommands/RootCommands.java b/RootCommands Library/src/org/rootcommands/RootCommands.java
@@ -16,9 +16,35 @@
 
 package org.rootcommands;
 
+import org.rootcommands.util.Log;
+
 public class RootCommands {
     public static boolean DEBUG = false;
     public static int DEFAULT_TIMEOUT = 10000;
 
-    public static String TAG = "RootCommands";
+    public static final String TAG = "RootCommands";
+
+    /**
+     * General method to check if user has su binary and accepts root access for this program!
+     * 
+     * @return true if everything worked
+     */
+    public static boolean rootAccessGiven() {
+        boolean rootAccess = false;
+
+        try {
+            Shell rootShell = Shell.startRootShell();
+
+            Toolbox tb = new Toolbox(rootShell);
+            if (tb.isRootAccessGiven()) {
+                rootAccess = true;
+            }
+
+            rootShell.close();
+        } catch (Exception e) {
+            Log.e(TAG, "Problem while checking for root access!", e);
+        }
+
+        return rootAccess;
+    }
 }
