public static CognitoUser ValidateUser(string username)
{
var provider = new AmazonCognitoIdentityProviderClient(new Amazon.Runtime.AnonymousAWSCredentials());
var userPool = new CognitoUserPool(PoolId, ClientAppId, provider, ClientSecret);
var user = new CognitoUser(username, ClientAppId, userPool, provider, ClientSecret);
var initiateAuthRequest = new InitiateCustomAuthRequest
{
AuthParameters = new Dictionary <string, string>(StringComparer.Ordinal)
{
{
CognitoConstants.ChlgParamUsername,
username
}
},
ClientMetadata = new Dictionary <string, string>()
};
if (!string.IsNullOrEmpty(ClientSecret))
{
initiateAuthRequest.AuthParameters.Add(CognitoConstants.ChlgParamSecretHash,
Util.GetUserPoolSecretHash(username, ClientAppId, ClientSecret));
}
AuthFlowResponse authResponse = user.StartWithCustomAuthAsync(initiateAuthRequest).ConfigureAwait(false)
.GetAwaiter().GetResult();
return(authResponse.AuthenticationResult != null ? user : null);
}
private async Task <string> GetIdTokenViaCustomAuthAsync(CognitoUser user,
InitiateCustomAuthRequest initiateAuthRequest)
{
var authFlowResponse = await user.StartWithCustomAuthAsync(initiateAuthRequest)
.ConfigureAwait(false);
return(authFlowResponse.AuthenticationResult.IdToken);
}