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diff --git a/src/librygel-core/rygel-client-hacks.vala b/src/librygel-core/rygel-client-hacks.vala
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+/*
+ * Copyright (C) 2011 Red Hat, Inc.
+ * Copyright (C) 2010 Nokia Corporation.
+ *
+ * Author: Zeeshan Ali (Khattak) <zeeshanak@gnome.org>
+ *
+ * This file is part of Rygel.
+ *
+ * Rygel is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Rygel is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+using Soup;
+using GUPnP;
+
+internal errordomain Rygel.ClientHacksError {
+    NA
+}
+
+internal abstract class Rygel.ClientHacks : GLib.Object {
+    private const string CORRECT_OBJECT_ID = "ObjectID";
+
+    public unowned string object_id { get;
+                                      protected set;
+                                      default = CORRECT_OBJECT_ID; }
+    protected Regex agent_regex;
+
+    protected ClientHacks (string   agent,
+                           Message? message)
+                           throws ClientHacksError {
+        try {
+            this.agent_regex = new Regex (agent,
+                                          RegexCompileFlags.CASELESS |
+                                          RegexCompileFlags.RAW,
+                                          0);
+        } catch (RegexError error) {
+            // This means subclasses did not provide a proper regular expression
+            assert_not_reached ();
+        }
+
+        if (message != null) {
+            this.check_headers (message.request_headers);
+        }
+    }
+
+    public static ClientHacks create (Message? message)
+                                      throws ClientHacksError {
+        try {
+            return new PanasonicHacks (message);
+        } catch (Error error) { }
+
+        try {
+            return new XBoxHacks (message);
+        } catch (Error error) { }
+
+        try {
+            return new WMPHacks (message);
+        } catch (Error error) { }
+
+        return new XBMCHacks (message);
+    }
+
+    public virtual void translate_container_id (MediaQueryAction action,
+                                                ref string       container_id) {}
+
+    public virtual void apply (MediaItem item) {}
+
+    public virtual void filter_sort_criteria (ref string sort_criteria) {}
+
+    public virtual async MediaObjects? search
+                                        (SearchableContainer container,
+                                         SearchExpression?   expression,
+                                         uint                offset,
+                                         uint                max_count,
+                                         out uint            total_matches,
+                                         Cancellable?        cancellable)
+                                         throws Error {
+        return yield container.search (expression,
+                                       offset,
+                                       max_count,
+                                       out total_matches,
+                                       cancellable);
+    }
+
+    private void check_headers (MessageHeaders headers)
+                                          throws ClientHacksError {
+        var agent = headers.get_one ("User-Agent");
+        if (agent == null || !(this.agent_regex.match (agent))) {
+            throw new ClientHacksError.NA (_("Not Applicable"));
+        }
+    }
+}