root / trunk / Pithos.Client.WPF / PithosAccount.cs @ 5120f3cb
History | View | Annotate | Download (4.6 kB)
1 |
// ----------------------------------------------------------------------- |
---|---|
2 |
// <copyright file="PithosAccount.cs" company="Microsoft"> |
3 |
// TODO: Update copyright text. |
4 |
// </copyright> |
5 |
// ----------------------------------------------------------------------- |
6 |
|
7 |
using Pithos.Network; |
8 |
using log4net; |
9 |
|
10 |
namespace Pithos.Client.WPF |
11 |
{ |
12 |
using System; |
13 |
using System.Collections.Generic; |
14 |
using System.Linq; |
15 |
using System.Text; |
16 |
using System.Net; |
17 |
using System.Threading.Tasks; |
18 |
using System.Diagnostics.Contracts; |
19 |
using System.Diagnostics; |
20 |
using System.Net.Sockets; |
21 |
|
22 |
/// <summary> |
23 |
/// TODO: Update summary. |
24 |
/// </summary> |
25 |
/// <summary> |
26 |
/// Retrieves an account name and token from PITHOS |
27 |
/// </summary> |
28 |
public static class PithosAccount |
29 |
{ |
30 |
private static readonly ILog Log = LogManager.GetLogger(typeof(PithosAccount)); |
31 |
|
32 |
/// <summary> |
33 |
/// Asynchronously retrieves PITHOS credentials |
34 |
/// </summary> |
35 |
/// <param name="pithosSite">URL to retrieve the account info from PITHOS. Must end with =</param> |
36 |
/// <returns>The credentials wrapped in a Task</returns> |
37 |
public static Task<NetworkCredential> RetrieveCredentialsAsync(string pithosSite) |
38 |
{ |
39 |
Contract.Requires(Uri.IsWellFormedUriString(pithosSite, UriKind.Absolute)); |
40 |
|
41 |
if (!Uri.IsWellFormedUriString(pithosSite, UriKind.Absolute)) |
42 |
throw new ArgumentException("The pithosSite parameter must be a valid absolute URL", "pithosSite"); |
43 |
|
44 |
int port = GetFreePort(); |
45 |
|
46 |
|
47 |
var listenerUrl = String.Format("http://127.0.0.1:{0}/", port); |
48 |
|
49 |
HttpListener listener = new HttpListener(); |
50 |
listener.Prefixes.Add(listenerUrl); |
51 |
|
52 |
Log.InfoFormat("[RETRIEVE] Listening at {0}", listenerUrl); |
53 |
|
54 |
listener.Start(); |
55 |
|
56 |
var task = Task.Factory.FromAsync<HttpListenerContext>(listener.BeginGetContext, listener.EndGetContext, null) |
57 |
.WithTimeout(TimeSpan.FromMinutes(1)) |
58 |
.ContinueWith(tc => |
59 |
{ |
60 |
try |
61 |
{ |
62 |
if (tc.IsFaulted) |
63 |
{ |
64 |
Log.Error("[RETRIEVE][ERROR] Receive connection {0}", tc.Exception); |
65 |
throw tc.Exception; |
66 |
} |
67 |
else |
68 |
{ |
69 |
|
70 |
var context = tc.Result; |
71 |
var request = context.Request; |
72 |
Log.InfoFormat("[RETRIEVE] Got Connection {0}", request.RawUrl); |
73 |
|
74 |
var query = request.QueryString; |
75 |
var userName = query["user"]; |
76 |
var token = query["token"]; |
77 |
|
78 |
Log.InfoFormat("[RETRIEVE] Credentials retrieved user:{0} token:{1}", userName, token); |
79 |
Respond(context); |
80 |
|
81 |
return new NetworkCredential(userName, token); |
82 |
} |
83 |
|
84 |
} |
85 |
finally |
86 |
{ |
87 |
listener.Close(); |
88 |
} |
89 |
}); |
90 |
|
91 |
var uriBuilder=new UriBuilder(pithosSite); |
92 |
uriBuilder.Path="login"; |
93 |
uriBuilder.Query="next=" + listenerUrl; |
94 |
|
95 |
var retrieveUri = uriBuilder.Uri; |
96 |
Log.InfoFormat("[RETRIEVE] Open Browser at {0}", retrieveUri); |
97 |
Process.Start(retrieveUri.ToString()); |
98 |
|
99 |
return task; |
100 |
} |
101 |
|
102 |
private static void Respond(HttpListenerContext context) |
103 |
{ |
104 |
var response = context.Response; |
105 |
var outBuffer = Encoding.UTF8.GetBytes("<html><head><title>Authenticated</title></head><body><h1>Got It</h1></body></html>"); |
106 |
response.ContentLength64 = outBuffer.Length; |
107 |
using (var stream = response.OutputStream) |
108 |
{ |
109 |
stream.Write(outBuffer, 0, outBuffer.Length); |
110 |
} |
111 |
|
112 |
Log.InfoFormat("[RETRIEVE] Responded"); |
113 |
} |
114 |
/// <summary> |
115 |
/// Locates a free local port |
116 |
/// </summary> |
117 |
/// <returns>A free port</returns> |
118 |
/// <remarks>The method starts and stops a TcpListener on port 0 to locate a free port.</remarks> |
119 |
public static int GetFreePort() |
120 |
{ |
121 |
//The TcpListener will locate a free port |
122 |
var listener = new TcpListener(IPAddress.Any, 0); |
123 |
listener.Start(); |
124 |
var port = ((IPEndPoint)listener.LocalEndpoint).Port; |
125 |
listener.Stop(); |
126 |
return port; |
127 |
} |
128 |
} |
129 |
} |