1 files changed, 11 insertions, 1 deletions
diff --git a/modules/gallery/controllers/photos.php b/modules/gallery/controllers/photos.php
index 81e7519e..fbff53ce 100644
--- a/modules/gallery/controllers/photos.php
+++ b/modules/gallery/controllers/photos.php
@@ -63,7 +63,17 @@ class Photos_Controller extends Items_Controller {
 
     $form = photo::get_edit_form($photo);
     $valid = $form->validate();
-    if ($valid = $form->validate()) {
+
+    if ($valid) {
+      $new_ext = pathinfo($form->edit_item->filename->value, PATHINFO_EXTENSION);
+      $old_ext = pathinfo($photo->name, PATHINFO_EXTENSION);
+      if (strcasecmp($new_ext, $old_ext)) {
+        $form->edit_item->filename->add_error("illegal_extension", 1);
+        $valid = false;
+      }
+    }
+
+    if ($valid) {
       if ($form->edit_item->filename->value != $photo->name ||
           $form->edit_item->slug->value != $photo->slug) {
         // Make sure that there's not a name or slug conflict