/// <summary>
/// Opens an interactive logon prompt to acquire an authentication token from the Microsoft Live authentication and identity service.
/// <para/>
/// Returns a `<see cref="Credential"/>` for packing into a basic authentication header; otherwise `<see langword="null"/>`.
/// </summary>
/// <param name="targetUri">
/// The uniform resource indicator of the resource access tokens are being requested for.
/// </param>
/// <param name="options"></param>
public async Task <Credential> InteractiveLogon(TargetUri targetUri, PersonalAccessTokenOptions options)
{
BaseSecureStore.ValidateTargetUri(targetUri);
try
{
Token token;
if ((token = await Authority.InteractiveAcquireToken(targetUri, ClientId, Resource, new Uri(RedirectUrl), QueryParameters)) != null)
{
Trace.WriteLine($"token '{targetUri}' successfully acquired.");
return(await GeneratePersonalAccessToken(targetUri, token, options));
}
}
catch (AuthenticationException exception)
{
Debug.Write(exception);
}
Trace.WriteLine($"failed to acquire token for '{targetUri}'.");
return(null);
}
/// <summary>
/// Generates a "personal access token" or service specific, usage restricted access token.
/// <para/>
/// Returns `<see langword="true"/>` if successful; `<see langword="false"/>` otherwise.
/// </summary>
/// <param name="targetUri">The target resource for which to acquire the personal access token for.</param>
/// <param name="accessToken">Azure Directory access token with privileges to grant access to the target resource.</param>
/// <param name="requestCompactToken">Generates a compact token if `<see langword="true"/>`; generates a self describing token if `<see langword="false"/>`.</param>
protected async Task <Credential> GeneratePersonalAccessToken(
TargetUri targetUri,
Token accessToken,
bool requestCompactToken)
{
if (targetUri is null)
{
throw new ArgumentNullException(nameof(targetUri));
}
if (accessToken is null)
{
throw new ArgumentNullException(nameof(accessToken));
}
Credential credential = null;
Token personalAccessToken;
if ((personalAccessToken = await Authority.GeneratePersonalAccessToken(targetUri, accessToken, TokenScope, requestCompactToken)) != null)
{
credential = (Credential)personalAccessToken;
Trace.WriteLine($"personal access token created for '{targetUri}'.");
try
{
await PersonalAccessTokenStore.WriteCredentials(targetUri, credential);
}
catch (Exception exception)
{
System.Diagnostics.Debug.WriteLine(exception);
Trace.WriteLine($"failed to write credentials to the secure store.");
Trace.WriteException(exception);
}
}
return(credential);
}
public async Task <Credential> NoninteractiveLogon(TargetUri targetUri, bool requestCompactToken)
{
BaseSecureStore.ValidateTargetUri(targetUri);
try
{
Token token;
if ((token = await Authority.NoninteractiveAcquireToken(targetUri, ClientId, Resource, new Uri(RedirectUrl))) != null)
{
Trace.WriteLine($"token acquisition for '{targetUri}' succeeded");
return(await GeneratePersonalAccessToken(targetUri, token, requestCompactToken));
}
}
catch (AuthenticationException)
{
Trace.WriteLine($"failed to acquire for '{targetUri}' token from Azure DevOps Authority.");
}
Trace.WriteLine($"non-interactive logon for '{targetUri}' failed");
return(null);
}
