Mono.Zeroconf – Rev 1
?pathlinks?
//
// DBusManager.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.IO;
using System.Reflection;
using System.Threading;
using NDesk.DBus;
namespace Mono.Zeroconf.Providers.AvahiDBus
{
internal static class DBusManager
{
private const uint MINIMUM_AVAHI_API_VERSION = 515;
private static object thread_wait = new object ();
private static bool initialized;
private static Bus bus;
public static Bus Bus {
get { return bus; }
}
private static IAvahiServer server;
public static IAvahiServer Server {
get { return server; }
}
private static void ConnectToSystemBus ()
{
string address = Environment.GetEnvironmentVariable ("DBUS_SYSTEM_BUS_ADDRESS");
if (String.IsNullOrEmpty (address)) {
address = "unix:path=/var/run/dbus/system_bus_socket";
}
bus = Bus.Open (address);
}
private static void IterateThread (object o)
{
lock (thread_wait) {
ConnectToSystemBus ();
Monitor.Pulse (thread_wait);
}
while (true) {
bus.Iterate ();
}
}
public static void Initialize ()
{
if (initialized) {
return;
}
initialized = true;
lock (thread_wait) {
ThreadPool.QueueUserWorkItem (IterateThread);
Monitor.Wait (thread_wait);
}
if (!bus.NameHasOwner("org.freedesktop.Avahi")) {
throw new ApplicationException ("Could not find org.freedesktop.Avahi");
}
server = GetObject<IAvahiServer> ("/");
uint api_version = server.GetAPIVersion ();
if (api_version < MINIMUM_AVAHI_API_VERSION) {
throw new ApplicationException (String.Format ("Avahi API version " +
"{0} is required, but {1} is what the server returned.",
MINIMUM_AVAHI_API_VERSION, api_version));
}
}
public static T GetObject<T> (string objectPath)
{
return GetObject<T> (new ObjectPath (objectPath));
}
public static T GetObject<T> (ObjectPath objectPath)
{
return bus.GetObject<T> ("org.freedesktop.Avahi", objectPath);
}
}
}