/// <summary>
/// Generates a "personal access token" or service specific, usage restricted access token.
/// <para/>
/// Returns a "personal access token" for the user if successful; otherwise `<see langword="null"/>`.
/// </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="options">Set of options related to generation of personal access tokens.</param>
protected async Task <Credential> GeneratePersonalAccessToken(
TargetUri targetUri,
Token accessToken,
PersonalAccessTokenOptions options)
{
if (targetUri is null)
{
throw new ArgumentNullException(nameof(targetUri));
}
if (accessToken is null)
{
throw new ArgumentNullException(nameof(accessToken));
}
TokenScope requestedScope = TokenScope;
if (options.TokenScope != null)
{
// Take the intersection of the authority scope and the requested scope
requestedScope &= options.TokenScope;
// If the result of the intersection is none, then fail
if (string.IsNullOrWhiteSpace(requestedScope.Value))
{
throw new InvalidOperationException("Invalid scope requested. Requested scope would result in no access privileges.");
}
}
Credential credential = null;
Token personalAccessToken;
if ((personalAccessToken = await Authority.GeneratePersonalAccessToken(targetUri, accessToken, requestedScope, options.RequireCompactToken, options.TokenDuration)) != 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: {exception.GetType().Name}.");
}
}
return(credential);
}
/// <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);
}