Apply bandaid to ensure preview permissions are correct

There have been some bug reports indicating that the previews generated
are not getting the correct permissions set, but reproducing this
issue has been a lost battle.  This patch attemtps to correct this
scenario by scanning the preview directories and files and setting
the correct permissions.

Change-Id: I51e19375136f152ac62a11713d3db0a984a35f50
TICKET: CYNGNOS-2592

2 files changed, 22 insertions, 0 deletions

diff --git a/src/org/cyanogenmod/themes/provider/ThemesProvider.java b/src/org/cyanogenmod/themes/provider/ThemesProvider.java
index f263881..61828fb 100644
--- a/src/org/cyanogenmod/themes/provider/ThemesProvider.java
+++ b/src/org/cyanogenmod/themes/provider/ThemesProvider.java
@@ -232,6 +232,7 @@ public class ThemesProvider extends ContentProvider {
          */
         mHandler.post(new Runnable() {
             public void run() {
+                PreviewUtils.ensureCorrectPreviewPermissions(getContext());
                 new VerifyInstalledThemesThread().start();
             }
         });
diff --git a/src/org/cyanogenmod/themes/provider/util/PreviewUtils.java b/src/org/cyanogenmod/themes/provider/util/PreviewUtils.java
index de86092..cda7683 100644
--- a/src/org/cyanogenmod/themes/provider/util/PreviewUtils.java
+++ b/src/org/cyanogenmod/themes/provider/util/PreviewUtils.java
@@ -15,6 +15,7 @@
  */
 package org.cyanogenmod.themes.provider.util;
 
+import android.content.Context;
 import android.graphics.Bitmap;
 import android.os.FileUtils;
 import android.util.Log;
@@ -46,6 +47,26 @@ public class PreviewUtils {
         return baseDir + File.separator + PREVIEWS_DIR;
     }
 
+    public static void ensureCorrectPreviewPermissions(Context context) {
+        File previewsDir = new File(getPreviewsDir(context.getFilesDir().getAbsolutePath()));
+        if (previewsDir.exists()) {
+            ensureCorrectPreviewPermissions(previewsDir);
+        }
+    }
+
+    private static void ensureCorrectPreviewPermissions(File file) {
+        int mode = 0;
+        if (file.isDirectory()) {
+            for (File f : file.listFiles()) {
+                ensureCorrectPreviewPermissions(f);
+            }
+            mode = FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH;
+        } else {
+            mode = FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH;
+        }
+        FileUtils.setPermissions(file, mode, -1, -1);
+    }
+
     private static String saveCompressedImage(byte[] image, String baseDir, String pkgName,
             String fileName) {
         if (image == null) return null;