[rygel] core: Check upnp:class on CreateItem

[Jens Georg <jensgeorg src gnome org>]

commit 3f65517d61f5119d98909558e7dbfaf8e0e9b1ee
Author: Jens Georg <mail jensge org>
Date:   Wed Sep 7 14:41:42 2011 +0200

    core: Check upnp:class on CreateItem

 src/rygel/rygel-item-creator.vala |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/rygel/rygel-item-creator.vala b/src/rygel/rygel-item-creator.vala
index f2882a2..5ed384b 100644
--- a/src/rygel/rygel-item-creator.vala
+++ b/src/rygel/rygel-item-creator.vala
@@ -97,6 +97,13 @@ internal class Rygel.ItemCreator: GLib.Object, Rygel.StateMachine {
                                          "were found in 'dlnaManaged'");
             }
 
+            if (didl_item.upnp_class == null ||
+                didl_item.upnp_class == "" ||
+                !didl_item.upnp_class.has_prefix ("object.item")) {
+                throw new ContentDirectoryError.BAD_METADATA
+                                        ("Invalid upnp:class given ");
+            }
+
             if (didl_item.restricted) {
                 throw new ContentDirectoryError.INVALID_ARGS
                                         ("Cannot create restricted item");