+++ /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.Collections;
-using System.Runtime.InteropServices;
-using System.Text;
-
-namespace Avahi
-{
- internal delegate void DomainBrowserCallback (IntPtr browser, int iface, Protocol proto, BrowserEvent bevent,
- IntPtr domain, LookupResultFlags flags, IntPtr userdata);
-
- public enum DomainBrowserType {
- Browse,
- BrowseDefault,
- Register,
- RegisterDefault,
- BrowseLegacy
- }
-
- public struct DomainInfo
- {
- public int NetworkInterface;
- public Protocol Protocol;
- public string Domain;
- public LookupResultFlags Flags;
- }
-
- public class DomainInfoArgs : EventArgs
- {
- private DomainInfo domain;
-
- public DomainInfo Domain
- {
- get { return domain; }
- }
-
- public DomainInfoArgs (DomainInfo domain)
- {
- this.domain = domain;
- }
- }
-
- public delegate void DomainInfoHandler (object o, DomainInfoArgs args);
-
- public class DomainBrowser : BrowserBase, IDisposable
- {
- private IntPtr handle;
- private ArrayList infos = new ArrayList ();
- private Client client;
- private int iface;
- private Protocol proto;
- private string domain;
- private DomainBrowserType btype;
- private LookupFlags flags;
- private DomainBrowserCallback cb;
-
- private ArrayList addListeners = new ArrayList ();
- private ArrayList removeListeners = new ArrayList ();
-
- [DllImport ("avahi-client")]
- private static extern IntPtr avahi_domain_browser_new (IntPtr client, int iface, int proto,
- byte[] domain, int btype, LookupFlags flags,
- DomainBrowserCallback cb,
- IntPtr userdata);
-
- [DllImport ("avahi-client")]
- private static extern void avahi_domain_browser_free (IntPtr handle);
-
- public event DomainInfoHandler DomainAdded
- {
- add {
- addListeners.Add (value);
- Start ();
- }
- remove {
- addListeners.Remove (value);
- Stop (false);
- }
- }
-
- public event DomainInfoHandler DomainRemoved
- {
- add {
- removeListeners.Add (value);
- Start ();
- }
- remove {
- removeListeners.Remove (value);
- Stop (false);
- }
- }
-
- public DomainInfo[] Domains
- {
- get { return (DomainInfo[]) infos.ToArray (typeof (DomainInfo)); }
- }
-
- public DomainBrowser (Client client) : this (client, -1, Protocol.Unspecified, client.DomainName,
- DomainBrowserType.Browse, LookupFlags.None) {
- }
-
- public DomainBrowser (Client client, int iface, Protocol proto, string domain,
- DomainBrowserType btype, LookupFlags flags)
- {
- this.client = client;
- this.iface = iface;
- this.proto = proto;
- this.domain = domain;
- this.btype = btype;
- this.flags = flags;
- cb = OnDomainBrowserCallback;
- }
-
- ~DomainBrowser ()
- {
- 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_domain_browser_new (client.Handle, iface, (int) proto,
- Utility.StringToBytes (domain), (int) btype, 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_domain_browser_free (handle);
- handle = IntPtr.Zero;
- }
- }
- }
-
- private void OnDomainBrowserCallback (IntPtr browser, int iface, Protocol proto, BrowserEvent bevent,
- IntPtr domain, LookupResultFlags flags, IntPtr userdata)
- {
-
- DomainInfo info;
- info.NetworkInterface = iface;
- info.Protocol = proto;
- info.Domain = Utility.PtrToString (domain);
- info.Flags = flags;
-
- switch (bevent) {
- case BrowserEvent.Added:
- infos.Add (info);
-
- foreach (DomainInfoHandler handler in addListeners)
- handler (this, new DomainInfoArgs (info));
- break;
- case BrowserEvent.Removed:
- infos.Remove (info);
-
- foreach (DomainInfoHandler handler in removeListeners)
- handler (this, new DomainInfoArgs (info));
- break;
- default:
- EmitBrowserEvent (bevent);
- break;
- }
- }
- }
-}