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/*
* daap-sharp
* Copyright (C) 2005 James Willcox <snorp@snorp.net>
*
* This library 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.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
using System;
using System.Net;
using System.Text;
using System.Collections;
using Mono.Zeroconf;
namespace DAAP {
public delegate void ServiceHandler (object o, ServiceArgs args);
public class ServiceArgs : EventArgs {
private Service service;
public Service Service {
get { return service; }
}
public ServiceArgs (Service service) {
this.service = service;
}
}
public class Service {
private IPAddress address;
private ushort port;
private string name;
private bool isprotected;
private string machineId;
public IPAddress Address {
get { return address; }
}
public ushort Port {
get { return port; }
}
public string Name {
get { return name; }
}
public bool IsProtected {
get { return isprotected; }
}
public string MachineId {
get { return machineId; }
}
public Service (IPAddress address, ushort port, string name, bool isprotected, string machineId) {
this.address = address;
this.port = port;
this.name = name;
this.isprotected = isprotected;
this.machineId = machineId;
}
public override string ToString()
{
return String.Format("{0}:{1} ({2})", Address, Port, Name);
}
}
public class ServiceLocator {
private ServiceBrowser browser;
private Hashtable services = new Hashtable ();
private bool showLocals = false;
public event ServiceHandler Found;
public event ServiceHandler Removed;
public bool ShowLocalServices {
get { return showLocals; }
set { showLocals = value; }
}
public IEnumerable Services {
get { return services; }
}
public void Start () {
if (browser != null) {
Stop ();
}
browser = new ServiceBrowser ();
browser.ServiceAdded += OnServiceAdded;
browser.ServiceRemoved += OnServiceRemoved;
browser.Browse ("_daap._tcp", "local");
}
public void Stop () {
browser.Dispose ();
browser = null;
services.Clear ();
}
private void OnServiceAdded (object o, ServiceBrowseEventArgs args) {
args.Service.Resolved += OnServiceResolved;
args.Service.Resolve ();
}
private void OnServiceResolved (object o, ServiceResolvedEventArgs args) {
IResolvableService zc_service = args.Service;
string name = zc_service.Name;
string machineId = null;
if (services[zc_service.Name] != null) {
return; // we already have it somehow
}
bool pwRequired = false;
// iTunes tacks this on to indicate a passsword protected share. Ugh.
if (name.EndsWith ("_PW")) {
name = name.Substring (0, name.Length - 3);
pwRequired = true;
}
foreach(TxtRecordItem item in zc_service.TxtRecord) {
if(item.Key.ToLower () == "password") {
pwRequired = item.ValueString.ToLower () == "true";
} else if (item.Key.ToLower () == "machine name") {
name = item.ValueString;
} else if (item.Key.ToLower () == "machine id") {
machineId = item.ValueString;
}
}
DAAP.Service svc = new DAAP.Service (zc_service.HostEntry.AddressList[0], (ushort)zc_service.Port,
name, pwRequired, machineId);
services[svc.Name] = svc;
if (Found != null)
Found (this, new ServiceArgs (svc));
}
private void OnServiceRemoved (object o, ServiceBrowseEventArgs args) {
Service svc = (Service) services[args.Service.Name];
if (svc != null) {
services.Remove (svc.Name);
if (Removed != null)
Removed (this, new ServiceArgs (svc));
}
}
}
}
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