/// <summary>
/// Se valida el cliente que manda crear el token
/// Se puede validar que el cliente "App" del lado del server manda crear el token y se valida aparte del usuario el cliente
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public override Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context)
{
string clientId = string.Empty;
string clientSecret = string.Empty;
string symmetricKeyAsBase64 = string.Empty;
if (!context.TryGetBasicCredentials(out clientId, out clientSecret))
{
context.TryGetFormCredentials(out clientId, out clientSecret);
}
if (context.ClientId == null)
{
context.SetError("invalid_clientId", "client_Id is not set");
return(Task.FromResult <object>(null));
}
var audience = AudiencesStore.FindAudience(context.ClientId);
if (audience == null)
{
context.SetError("invalid_clientId", string.Format("Invalid client_id '{0}'", context.ClientId));
return(Task.FromResult <object>(null));
}
context.OwinContext.Set <string>("as:clientAllowedOrigin", "*");
context.Validated();
return(Task.FromResult <object>(null));
}
public string Protect(AuthenticationTicket data)
{
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
string audienceId = data.Properties.Dictionary.ContainsKey(AudiencePropertyKey) ? data.Properties.Dictionary[AudiencePropertyKey] : null;
if (string.IsNullOrWhiteSpace(audienceId))
{
throw new InvalidOperationException("AuthenticationTicket.Properties does not include audience");
}
Audience audience = AudiencesStore.FindAudience(audienceId);
string symmetricKeyAsBase64 = audience.Base64Secret;
var keyByteArray = TextEncodings.Base64Url.Decode(symmetricKeyAsBase64);
var signingKey = new HmacSigningCredentials(keyByteArray);
var issued = data.Properties.IssuedUtc;
var expires = data.Properties.ExpiresUtc;
return(new JwtSecurityTokenHandler().WriteToken(new JwtSecurityToken(_issuer, audienceId, data.Identity.Claims, issued.Value.UtcDateTime, expires.Value.UtcDateTime, signingKey)));
}
