public static async Task <string> GetAccessTokenAsync(AadMetadata aad, CancellationToken cancellationToken)
{
var authority = aad.Authority;
var authContext = new AuthenticationContext(authority);
AuthenticationResult authResult = null;
var token = string.Empty;
// On full .net framework, use interactive logon to get token.
// On dotnet core, acquire token using device id.
// https://github.com/AzureAD/azure-activedirectory-library-for-dotnet/wiki/Acquiring-a-token-return-AuthenticationResult-and-possibly-UserInfo
#if DotNetCoreClr
try
{
authResult = await authContext.AcquireTokenSilentAsync(aad.Cluster, aad.Client);
}
catch (AdalException adalException)
{
if (adalException.ErrorCode == AdalError.FailedToAcquireTokenSilently ||
adalException.ErrorCode == AdalError.InteractionRequired)
{
try
{
var codeResult = await authContext.AcquireDeviceCodeAsync(aad.Cluster, aad.Client);
Console.WriteLine(Resource.MsgAADSignin);
Console.WriteLine(codeResult.Message + "\n");
authResult = await authContext.AcquireTokenByDeviceCodeAsync(codeResult);
}
catch (Exception ex)
{
Console.WriteLine(Resource.ErrorAAD);
Console.WriteLine("Message: " + ex.Message + "\n");
}
}
}
token = authResult.AccessToken;
#else
authResult = await authContext.AcquireTokenAsync(
aad.Cluster,
aad.Client,
new Uri(aad.Redirect),
new PlatformParameters(PromptBehavior.SelectAccount));
token = authResult.AccessToken;
#endif
return(token);
}
/// <summary>
/// Serializes the object to JSON.
/// </summary>
/// <param name="writer">The <see cref="T: Newtonsoft.Json.JsonWriter" /> to write to.</param>
/// <param name="obj">The object to serialize to JSON.</param>
internal static void Serialize(JsonWriter writer, AadMetadata obj)
{
// Required properties are always serialized, optional properties are serialized when not null.
writer.WriteStartObject();
if (obj.Authority != null)
{
writer.WriteProperty(obj.Authority, "authority", JsonWriterExtensions.WriteStringValue);
}
if (obj.Client != null)
{
writer.WriteProperty(obj.Client, "client", JsonWriterExtensions.WriteStringValue);
}
if (obj.Cluster != null)
{
writer.WriteProperty(obj.Cluster, "cluster", JsonWriterExtensions.WriteStringValue);
}
if (obj.Login != null)
{
writer.WriteProperty(obj.Login, "login", JsonWriterExtensions.WriteStringValue);
}
if (obj.Redirect != null)
{
writer.WriteProperty(obj.Redirect, "redirect", JsonWriterExtensions.WriteStringValue);
}
if (obj.Tenant != null)
{
writer.WriteProperty(obj.Tenant, "tenant", JsonWriterExtensions.WriteStringValue);
}
writer.WriteEndObject();
}
public AADTokenHandler(AadMetadata aadMetaData)
{
this.aadMetaData = aadMetaData;
}
