+++ /dev/null
-/***
- This file is part of avahi.
-
- avahi 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 2.1 of the
- License, or (at your option) any later version.
-
- avahi 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 avahi; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-using System;
-using System.Net;
-using System.Collections;
-using System.Runtime.InteropServices;
-using System.Text;
-
-namespace Avahi
-{
- internal delegate void ServiceBrowserCallback (IntPtr browser, int iface, Protocol proto, BrowserEvent bevent,
- IntPtr name, IntPtr type, IntPtr domain, LookupResultFlags flags,
- IntPtr userdata);
-
- public struct ServiceInfo
- {
- public int NetworkInterface;
- public Protocol Protocol;
- public string Domain;
- public string ServiceType;
- public string Name;
-
- public string HostName;
- public IPAddress Address;
- public UInt16 Port;
- public byte[][] Text;
- public LookupResultFlags Flags;
-
- public static ServiceInfo Zero = new ServiceInfo ();
- }
-
- public class ServiceInfoArgs : EventArgs
- {
- private ServiceInfo service;
-
- public ServiceInfo Service {
- get { return service; }
- }
-
- public ServiceInfoArgs (ServiceInfo service)
- {
- this.service = service;
- }
- }
-
- public delegate void ServiceInfoHandler (object o, ServiceInfoArgs args);
-
- public class ServiceBrowser : BrowserBase, IDisposable
- {
- private IntPtr handle;
- private ArrayList infos = new ArrayList ();
- private Client client;
- private int iface;
- private Protocol proto;
- private string domain;
- private string type;
- private LookupFlags flags;
- private ServiceBrowserCallback cb;
-
- private ArrayList addListeners = new ArrayList ();
- private ArrayList removeListeners = new ArrayList ();
-
- [DllImport ("avahi-client")]
- private static extern IntPtr avahi_service_browser_new (IntPtr client, int iface, int proto, byte[] type,
- byte[] domain, LookupFlags flags,
- ServiceBrowserCallback cb,
- IntPtr userdata);
-
- [DllImport ("avahi-client")]
- private static extern void avahi_service_browser_free (IntPtr handle);
-
- public event ServiceInfoHandler ServiceAdded
- {
- add {
- addListeners.Add (value);
- Start ();
- }
- remove {
- addListeners.Remove (value);
- Stop (false);
- }
- }
-
- public event ServiceInfoHandler ServiceRemoved
- {
- add {
- removeListeners.Add (value);
- Start ();
- }
- remove {
- removeListeners.Remove (value);
- Stop (false);
- }
- }
-
- public ServiceInfo[] Services
- {
- get { return (ServiceInfo[]) infos.ToArray (typeof (ServiceInfo)); }
- }
-
- public ServiceBrowser (Client client, string type) : this (client, type, client.DomainName)
- {
- }
-
- public ServiceBrowser (Client client, string type, string domain) : this (client, -1, Protocol.Unspecified,
- type, domain, LookupFlags.None)
- {
- }
-
- public ServiceBrowser (Client client, int iface, Protocol proto, string type, string domain, LookupFlags flags)
- {
- this.client = client;
- this.iface = iface;
- this.proto = proto;
- this.domain = domain;
- this.type = type;
- this.flags = flags;
- cb = OnServiceBrowserCallback;
- }
-
- ~ServiceBrowser ()
- {
- Dispose ();
- }
-
- public void Dispose ()
- {
- Stop (true);
- }
-
- private void Start ()
- {
- if (client.Handle == IntPtr.Zero || handle != IntPtr.Zero ||
- (addListeners.Count == 0 && removeListeners.Count == 0))
- return;
-
- lock (client) {
- handle = avahi_service_browser_new (client.Handle, iface, (int) proto,
- Utility.StringToBytes (type), Utility.StringToBytes (domain),
- flags, cb, IntPtr.Zero);
-
- if (handle == IntPtr.Zero)
- client.ThrowError ();
- }
- }
-
- private void Stop (bool force)
- {
- if (client.Handle != IntPtr.Zero && handle != IntPtr.Zero &&
- (force || (addListeners.Count == 0 && removeListeners.Count == 0))) {
-
- lock (client) {
- avahi_service_browser_free (handle);
- handle = IntPtr.Zero;
- }
- }
- }
-
- private void OnServiceBrowserCallback (IntPtr browser, int iface, Protocol proto, BrowserEvent bevent,
- IntPtr name, IntPtr type, IntPtr domain, LookupResultFlags flags,
- IntPtr userdata)
- {
-
- ServiceInfo info;
- info.NetworkInterface = iface;
- info.Protocol = proto;
- info.Domain = Utility.PtrToString (domain);
- info.ServiceType = Utility.PtrToString (type);
- info.Name = Utility.PtrToString (name);
- info.HostName = null;
- info.Address = null;
- info.Port = 0;
- info.Text = null;
- info.Flags = flags;
-
- switch (bevent) {
- case BrowserEvent.Added:
- infos.Add (info);
-
- foreach (ServiceInfoHandler handler in addListeners)
- handler (this, new ServiceInfoArgs (info));
-
- break;
- case BrowserEvent.Removed:
- infos.Remove (info);
-
- foreach (ServiceInfoHandler handler in removeListeners)
- handler (this, new ServiceInfoArgs (info));
-
- break;
- default:
- EmitBrowserEvent (bevent);
- break;
- }
- }
- }
-}
projects / catta / blobdiff