public void Startup()
{
// Subscribe the windows events which tell us a title was changed
_winEventObservable = WinEventHook.WindowTileChangeObservable()
.Select(info => User32Api.GetText(info.Handle))
.Where(title => !string.IsNullOrEmpty(title))
.Subscribe(MonitorTitleChangeEvent);
}
private async Task TestWinEventHook()
{
// This takes care of having a WinProc handler, to make sure the messages arrive
var winProcHandler = WinProcHandler.Instance;
// This buffers the observable
var replaySubject = new ReplaySubject <IInteropWindow>();
var winEventObservable = WinEventHook.WindowTileChangeObservable()
.Select(info => InteropWindowFactory.CreateFor(info.Handle).Fill())
.Where(interopWindow => !string.IsNullOrEmpty(interopWindow?.Caption))
.Subscribe(interopWindow =>
{
Log.Debug().WriteLine("Window title change: Process ID {0} - Title: {1}", interopWindow.Handle, interopWindow.Caption);
replaySubject.OnNext(interopWindow);
}, exception => Log.Error().WriteLine("An error occured", exception));
await Task.Delay(100);
// Start a process to test against
using (var process = Process.Start("notepad.exe"))
{
try
{
// Make sure it's started
Assert.NotNull(process);
// Wait until the process started it's message pump (listening for input)
process.WaitForInputIdle();
User32Api.SetWindowText(process.MainWindowHandle, "TestWinEventHook - Test");
// Find the belonging window
var notepadWindow = await replaySubject.Where(info => info != null && info.ProcessId == process.Id).FirstAsync();
Assert.Equal(process.Id, notepadWindow?.ProcessId);
}
finally
{
winEventObservable.Dispose();
process?.Kill();
}
}
}
/// <summary>
/// The OAuth code receiver
/// </summary>
/// <param name="authorizeMode">which of the AuthorizeModes was used to call the method</param>
/// <param name="codeReceiverSettings"></param>
/// <param name="cancellationToken">CancellationToken</param>
/// <returns>Dictionary with values</returns>
public async Task <IDictionary <string, string> > ReceiveCodeAsync(AuthorizeModes authorizeMode, ICodeReceiverSettings codeReceiverSettings,
CancellationToken cancellationToken = default)
{
// Force OOB Uri, if nothing is set
if (string.IsNullOrEmpty(codeReceiverSettings.RedirectUrl))
{
switch (authorizeMode)
{
case AuthorizeModes.OutOfBound:
codeReceiverSettings.RedirectUrl = "urn:ietf:wg:oauth:2.0:oob";
break;
case AuthorizeModes.OutOfBoundAuto:
codeReceiverSettings.RedirectUrl = "urn:ietf:wg:oauth:2.0:oob:auto";
break;
default:
throw new NotSupportedException($"Only {AuthorizeModes.OutOfBound} and {AuthorizeModes.OutOfBoundAuto} are supported modes for this receiver");
}
}
var uriBuilder = new UriBuilder(codeReceiverSettings.AuthorizationUri)
{
Query = codeReceiverSettings.AuthorizationUri.QueryToKeyValuePairs()
.Select(x => new KeyValuePair <string, string>(x.Key, x.Value.FormatWith(codeReceiverSettings)))
.ToQueryString()
};
// Get the formatted FormattedAuthUrl
var authorizationUrl = uriBuilder.Uri;
Log.Debug().WriteLine("Opening a browser with: {0}", authorizationUrl.AbsoluteUri);
// Open the url in the default browser
var processStartInfo = new ProcessStartInfo(authorizationUrl.AbsoluteUri)
{
CreateNoWindow = true,
UseShellExecute = true
};
Process.Start(processStartInfo);
Log.Debug().WriteLine("Waiting until a window gets a title with the state {0}", codeReceiverSettings.State);
// Wait until a window get's a title which contains the state object
var title = await WinEventHook.WindowTileChangeObservable()
.Select(info => InteropWindowFactory.CreateFor(info.Handle).Fill())
.Where(interopWindow => !string.IsNullOrEmpty(interopWindow?.Caption))
.Where(interopWindow => interopWindow.Caption.Contains(codeReceiverSettings.State))
// Skip temporary titles, where the redirect URL os briefly seen
.Where(interopWindow => interopWindow?.Caption.Contains(codeReceiverSettings.RedirectUrl) != true)
.Select(interopWindow => interopWindow.Caption)
.Take(1).ToTask(cancellationToken);
Log.Debug().WriteLine("Got title {0}", title);
if (string.IsNullOrEmpty(title))
{
return(new Dictionary <string, string>());
}
var match = QueryPartOfTitleRegEx.Match(title);
if (!match.Success)
{
return(UriParseExtensions.QueryStringToDictionary(title));
}
var queryParameters = match.Groups["query"]?.Value;
if (string.IsNullOrEmpty(queryParameters))
{
return(new Dictionary <string, string>());
}
Log.Debug().WriteLine("Query parameters: {0}", queryParameters);
// Return result of the listening
return(UriParseExtensions.QueryStringToDictionary(queryParameters));
}