Auto fix file permissions

Fixes #627

README.md

@@ -570,6 +570,7 @@ How to get beta releases:
 
 **Next release**
 
+* Auto fix file permissions ([issue](https://github.com/M66B/XPrivacy/issues/627))
 * Added Estonian translation
 * Updated German translation
 * Updated Slovenian translation

src/biz/bokhorst/xprivacy/PrivacyProvider.java

@@ -544,6 +544,17 @@ private static void setPrefFileReadable(String preference, int uid) {
 		new File(getPrefFileName(preference, uid)).setReadable(true, false);
 	}
 
+	public static void fixFilePermissions() {
+		String packageName = PrivacyManager.class.getPackage().getName();
+		File list[] = new File(Environment.getDataDirectory() + File.separator + "data" + File.separator + packageName
+				+ File.separator + "shared_prefs").listFiles();
+		if (list != null)
+			for (File file : list)
+				if (file.getName().startsWith("biz.bokhorst.xprivacy.provider.") && file.getName().endsWith(".xml")
+						&& !file.getName().contains(".usage."))
+					file.setReadable(true, false);
+	}
+
 	private static String getRestrictionPref(String restrictionName) {
 		return String.format("%s.%s", COL_RESTRICTED, restrictionName);
 	}

src/biz/bokhorst/xprivacy/XPrivacy.java

@@ -36,6 +36,8 @@ public void initZygote(StartupParam startupParam) throws Throwable {
 		// Log load
 		Util.log(null, Log.INFO, String.format("load %s", startupParam.modulePath));
 
+		PrivacyProvider.fixFilePermissions();
+
 		// Account manager
 		hookAll(XAccountManager.getInstances());