Add device info field for encryption

bug: 17792300
Change-Id: I3f974e415628aa37eb553a0851595ba0c50d65d2
diff --git a/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/DeviceInfoConstants.java b/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/DeviceInfoConstants.java
index 1eb4acb..62c268d 100644
--- a/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/DeviceInfoConstants.java
+++ b/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/DeviceInfoConstants.java
@@ -68,4 +68,5 @@
     public static final String SERIAL_NUMBER = "deviceID";
     public static final String STORAGE_DEVICES = "storage_devices";
     public static final String MULTI_USER = "multi_user";
+    public static final String ENCRYPTED = "encrypted";
 }
diff --git a/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/DeviceInfoInstrument.java b/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/DeviceInfoInstrument.java
index 19349e5..52ddfe9 100644
--- a/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/DeviceInfoInstrument.java
+++ b/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/DeviceInfoInstrument.java
@@ -149,6 +149,9 @@
         // Multi-user support
         addResult(MULTI_USER, getMultiUserInfo());
 
+        // Encrypted
+        addResult(ENCRYPTED, getEncrypted());
+
         finish(Activity.RESULT_OK, mResults);
     }
 
@@ -394,4 +397,29 @@
 
         return "unknown";
     }
+
+    private static String getProperty(String property)
+            throws IOException {
+        Process process = new ProcessBuilder("getprop", property).start();
+        Scanner scanner = null;
+        String line = "";
+        try {
+            scanner = new Scanner(process.getInputStream());
+            line = scanner.nextLine();
+        } finally {
+            if (scanner != null) {
+                scanner.close();
+            }
+        }
+        return line;
+    }
+
+    private int getEncrypted() {
+        try {
+            return "encrypted".equals(getProperty("ro.crypto.state")) ? 1 : 0;
+        } catch (IOException e) {
+        }
+
+        return 0;
+    }
 }