private async Task <string> SerializeRefreshTokenAsync(
ClaimsPrincipal principal, AuthenticationProperties properties,
OpenIdConnectRequest request, OpenIdConnectResponse response)
{
// Note: claims in refresh tokens are never filtered as they are supposed to be opaque:
// SerializeAccessTokenAsync and SerializeIdentityTokenAsync are responsible of ensuring
// that subsequent access and identity tokens are correctly filtered.
// Create a new ticket containing the updated properties.
var ticket = new AuthenticationTicket(principal, properties, Scheme.Name);
ticket.Properties.IssuedUtc = Options.SystemClock.UtcNow;
// Only set the expiration date if a lifetime was specified in either the ticket or the options.
var lifetime = ticket.GetRefreshTokenLifetime() ?? Options.RefreshTokenLifetime;
if (lifetime.HasValue)
{
ticket.Properties.ExpiresUtc = ticket.Properties.IssuedUtc + lifetime.Value;
}
// Associate a random identifier with the refresh token.
ticket.SetTokenId(Guid.NewGuid().ToString());
// Remove the unwanted properties from the authentication ticket.
ticket.RemoveProperty(OpenIdConnectConstants.Properties.AuthorizationCodeLifetime)
.RemoveProperty(OpenIdConnectConstants.Properties.CodeChallenge)
.RemoveProperty(OpenIdConnectConstants.Properties.CodeChallengeMethod)
.RemoveProperty(OpenIdConnectConstants.Properties.Nonce)
.RemoveProperty(OpenIdConnectConstants.Properties.OriginalRedirectUri)
.RemoveProperty(OpenIdConnectConstants.Properties.TokenUsage);
var notification = new SerializeRefreshTokenContext(Context, Scheme, Options, request, response, ticket)
{
DataFormat = Options.RefreshTokenFormat
};
await Provider.SerializeRefreshToken(notification);
if (notification.IsHandled || !string.IsNullOrEmpty(notification.RefreshToken))
{
return(notification.RefreshToken);
}
if (notification.DataFormat == null)
{
throw new InvalidOperationException("A data formatter must be provided.");
}
var result = notification.DataFormat.Protect(ticket);
Logger.LogTrace("A new refresh token was successfully generated using the " +
"specified data format: {Token} ; {Claims} ; {Properties}.",
result, ticket.Principal.Claims, ticket.Properties.Items);
return(result);
}
/// <summary> /// Represents an event called when serializing a refresh token. /// </summary> /// <param name="context">The context instance associated with this event.</param> /// <returns>A <see cref="Task"/> that can be used to monitor the asynchronous operation.</returns> public virtual Task SerializeRefreshToken(SerializeRefreshTokenContext context) => OnSerializeRefreshToken(context);
