+++ /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.Net;
-using System.Runtime.InteropServices;
-using System.Text;
-using Mono.Unix;
-
-namespace Avahi
-{
-
- internal delegate void ServiceResolverCallback (IntPtr resolver, int iface, Protocol proto,
- ResolverEvent revent, IntPtr name, IntPtr type,
- IntPtr domain, IntPtr host, IntPtr address,
- UInt16 port, IntPtr txt, LookupResultFlags flags,
- IntPtr userdata);
-
- public class ServiceResolver : ResolverBase, IDisposable
- {
- private IntPtr handle;
- private ServiceInfo currentInfo;
- private Client client;
- private int iface;
- private Protocol proto;
- private string name;
- private string type;
- private string domain;
- private Protocol aproto;
- private LookupFlags flags;
- private ServiceResolverCallback cb;
-
- private ArrayList foundListeners = new ArrayList ();
- private ArrayList timeoutListeners = new ArrayList ();
-
- [DllImport ("avahi-client")]
- private static extern IntPtr avahi_service_resolver_new (IntPtr client, int iface, Protocol proto,
- byte[] name, byte[] type, byte[] domain,
- Protocol aproto, LookupFlags flags,
- ServiceResolverCallback cb,
- IntPtr userdata);
-
- [DllImport ("avahi-common")]
- private static extern IntPtr avahi_string_list_get_next (IntPtr list);
-
- [DllImport ("avahi-common")]
- private static extern IntPtr avahi_string_list_get_text (IntPtr list);
-
- [DllImport ("avahi-common")]
- private static extern int avahi_string_list_get_size (IntPtr list);
-
- [DllImport ("avahi-client")]
- private static extern void avahi_service_resolver_free (IntPtr handle);
-
- public event ServiceInfoHandler Found
- {
- add {
- foundListeners.Add (value);
- Start ();
- }
- remove {
- foundListeners.Remove (value);
- Stop (false);
- }
- }
-
- public event EventHandler Timeout
- {
- add {
- timeoutListeners.Add (value);
- Start ();
- }
- remove {
- timeoutListeners.Remove (value);
- Stop (false);
- }
- }
-
- public ServiceInfo Service
- {
- get { return currentInfo; }
- }
-
- public ServiceResolver (Client client, string name, string type, string domain) : this (client, -1,
- Protocol.Unspecified,
- name, type, domain,
- Protocol.Unspecified,
- LookupFlags.None)
- {
- }
-
- public ServiceResolver (Client client, ServiceInfo service) : this (client, service.NetworkInterface,
- service.Protocol, service.Name,
- service.ServiceType, service.Domain,
- Protocol.Unspecified,
- GetLookupFlags (service.Flags))
- {
- }
-
- public ServiceResolver (Client client, int iface, Protocol proto, string name,
- string type, string domain, Protocol aproto, LookupFlags flags)
- {
- this.client = client;
- this.iface = iface;
- this.proto = proto;
- this.name = name;
- this.type = type;
- this.domain = domain;
- this.aproto = aproto;
- this.flags = flags;
- cb = OnServiceResolverCallback;
- }
-
- ~ServiceResolver ()
- {
- Dispose ();
- }
-
- public void Dispose ()
- {
- Stop (true);
- }
-
- private void Start ()
- {
- if (client.Handle == IntPtr.Zero || handle != IntPtr.Zero ||
- (foundListeners.Count == 0 && timeoutListeners.Count == 0))
- return;
-
- lock (client) {
- handle = avahi_service_resolver_new (client.Handle, iface, proto,
- Utility.StringToBytes (name), Utility.StringToBytes (type),
- Utility.StringToBytes (domain), aproto, flags, cb, IntPtr.Zero);
-
- if (handle == IntPtr.Zero)
- client.ThrowError ();
- }
- }
-
- private void Stop (bool force)
- {
- if (client.Handle != IntPtr.Zero && handle != IntPtr.Zero &&
- (force || (foundListeners.Count == 0 && timeoutListeners.Count == 0))) {
-
- lock (client) {
- avahi_service_resolver_free (handle);
- handle = IntPtr.Zero;
- }
- }
- }
-
- private void OnServiceResolverCallback (IntPtr resolver, int iface, Protocol proto,
- ResolverEvent revent, IntPtr name, IntPtr type,
- IntPtr domain, IntPtr host, IntPtr address,
- UInt16 port, IntPtr txt, 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 = Utility.PtrToString (host);
- info.Address = Utility.PtrToAddress (address);
- info.Port = port;
-
- if (proto == Protocol.IPv6)
- info.Address.ScopeId = iface;
-
- ArrayList txtlist = new ArrayList ();
- for (IntPtr l = txt; l != IntPtr.Zero; l = avahi_string_list_get_next (l)) {
- IntPtr buf = avahi_string_list_get_text (l);
- int len = avahi_string_list_get_size (l);
-
- byte[] txtbuf = new byte[len];
- Marshal.Copy (buf, txtbuf, 0, len);
- txtlist.Add (txtbuf);
- }
-
- info.Text = (byte[][]) txtlist.ToArray (typeof (byte[]));
- info.Flags = flags;
-
- switch (revent) {
- case ResolverEvent.Found:
- currentInfo = info;
-
- foreach (ServiceInfoHandler handler in foundListeners)
- handler (this, new ServiceInfoArgs (info));
- break;
- case ResolverEvent.Failure:
- EmitFailure (client.LastError);
- break;
- }
- }
-
- private static LookupFlags GetLookupFlags (LookupResultFlags rflags) {
- LookupFlags ret = LookupFlags.None;
-
- if ((rflags & LookupResultFlags.Multicast) > 0)
- ret |= LookupFlags.UseMulticast;
- if ((rflags & LookupResultFlags.WideArea) > 0)
- ret |= LookupFlags.UseWideArea;
-
- return ret;
- }
- }
-}
projects / catta / blobdiff