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//
// DBusServiceManager.cs
//
// Author:
// Aaron Bockover <abockover@novell.com>
//
// Copyright (C) 2007-2008 Novell, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.Reflection;
using DBus;
using org.freedesktop.DBus;
using Hyena;
using Banshee.Base;
namespace Banshee.ServiceStack
{
public class DBusExportableAttribute : Attribute
{
private string service_name;
public string ServiceName {
get { return service_name; }
set { service_name = value; }
}
}
public class DBusServiceManager : IService
{
public const string ObjectRoot = "/org/bansheeproject/Banshee";
private Dictionary<object, ObjectPath> registered_objects = new Dictionary<object, ObjectPath> ();
public static string MakeDBusSafeString (string str)
{
return str == null ? String.Empty : Regex.Replace (str, @"[^A-Za-z0-9]*", String.Empty);
}
public static string MakeObjectPath (IDBusExportable o)
{
StringBuilder object_path = new StringBuilder ();
object_path.Append (ObjectRoot);
object_path.Append ('/');
Stack<string> paths = new Stack<string> ();
IDBusExportable p = o.Parent;
while (p != null) {
paths.Push (String.Format ("{0}/", GetObjectName (p)));
p = p.Parent;
}
while (paths.Count > 0) {
object_path.Append (paths.Pop ());
}
object_path.Append (GetObjectName (o));
return object_path.ToString ();
}
private static string GetObjectName (IDBusExportable o)
{
return o is IDBusObjectName ? ((IDBusObjectName)o).ExportObjectName : o.ServiceName;
}
public static string [] MakeObjectPathArray<T> (IEnumerable<T> collection) where T : IDBusExportable
{
List<string> paths = new List<string> ();
foreach (IDBusExportable item in collection) {
paths.Add (MakeObjectPath (item));
}
return paths.ToArray ();
}
public ObjectPath RegisterObject (IDBusExportable o)
{
return RegisterObject (DBusConnection.DefaultServiceName, o);
}
public ObjectPath RegisterObject (string serviceName, IDBusExportable o)
{
return RegisterObject (serviceName, o, MakeObjectPath (o));
}
public ObjectPath RegisterObject (object o, string objectName)
{
return RegisterObject (DBusConnection.DefaultServiceName, o, objectName);
}
public ObjectPath RegisterObject (string serviceName, object o, string objectName)
{
ObjectPath path = null;
if (DBusConnection.Enabled && Bus.Session != null) {
object [] attrs = o.GetType ().GetCustomAttributes (typeof (DBusExportableAttribute), true);
if (attrs != null && attrs.Length > 0) {
DBusExportableAttribute dbus_attr = (DBusExportableAttribute)attrs[0];
if (!String.IsNullOrEmpty (dbus_attr.ServiceName)) {
serviceName = dbus_attr.ServiceName;
}
}
lock (registered_objects) {
registered_objects.Add (o, path = new ObjectPath (objectName));
}
string bus_name = DBusConnection.MakeBusName (serviceName);
Log.DebugFormat ("Registering remote object {0} ({1}) on {2}", path, o.GetType (), bus_name);
#pragma warning disable 0618
Bus.Session.Register (bus_name, path, o);
#pragma warning restore 0618
}
return path;
}
public void UnregisterObject (object o)
{
ObjectPath path = null;
lock (registered_objects) {
if (!registered_objects.TryGetValue (o, out path)) {
Log.WarningFormat ("Unable to unregister DBus object {0}, does not appear to be registered",
o.GetType ());
return;
}
registered_objects.Remove (o);
}
Bus.Session.Unregister (path);
}
public static T FindInstance<T> (string objectPath) where T : class
{
return FindInstance<T> (DBusConnection.DefaultBusName, true, objectPath);
}
public static T FindInstance<T> (string serviceName, string objectPath) where T : class
{
return FindInstance<T> (serviceName, false, objectPath);
}
public static T FindInstance<T> (string serviceName, bool isFullBusName, string objectPath) where T : class
{
string busName = isFullBusName ? serviceName : DBusConnection.MakeBusName (serviceName);
if (!DBusConnection.Enabled || !Bus.Session.NameHasOwner (busName)) {
return null;
}
string full_object_path = objectPath;
if (!objectPath.StartsWith (ObjectRoot)) {
full_object_path = ObjectRoot + objectPath;
}
return Bus.Session.GetObject<T> (busName, new ObjectPath (full_object_path));
}
string IService.ServiceName {
get { return "DBusServiceManager"; }
}
}
}
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