private async Task UpdateExternalAuthLink(ExternalAuthenticationLink externalAuthenticationLink,
string accessToken, DateTime expiresDate, string scopesToAdd = null, string refreshToken = null)
{
if (externalAuthenticationLink == null || string.IsNullOrEmpty(accessToken))
{
return;
}
externalAuthenticationLink.AccessToken = accessToken;
externalAuthenticationLink.AccessTokenExpiresDate = expiresDate;
if (!string.IsNullOrEmpty(refreshToken))
{
externalAuthenticationLink.RefreshToken = refreshToken;
}
_externalAuthLinkRepository.Update(externalAuthenticationLink);
await _context.SaveChangesAsync();
}
private async Task <ExternalAuthenticationAccessTokenUpdateResponse> UpdateExternalAccessToken(string refreshToken, ExternalAuthenticationLink externalAuthenticationLink)
{
if (string.IsNullOrEmpty(refreshToken))
{
throw new ArgumentException(nameof(refreshToken));
}
var httpContent = new FormUrlEncodedContent(new[]
{
new KeyValuePair <string, string>("client_id", _googleExternalAuthenticationConfiguration.ClientId),
new KeyValuePair <string, string>("client_secret", _googleExternalAuthenticationConfiguration.ClientSecret),
new KeyValuePair <string, string>("grant_type", IdentityServerConstants.PersistedGrantTypes.RefreshToken),
new KeyValuePair <string, string>("refresh_token", refreshToken)
});
ExternalAuthenticationAccessTokenUpdateResponse refreshResponse = null;
using (var client = new HttpClient())
using (var response = await client.PostAsync(GoogleDefaults.TokenEndpoint, httpContent))
{
if (response?.StatusCode != HttpStatusCode.OK)
{
throw new Exception("Refresh Access Token request failed. User token might be invalid");
}
var responseAsString = await response.Content.ReadAsStringAsync();
if (!string.IsNullOrEmpty(responseAsString))
{
refreshResponse = JsonConvert.DeserializeObject <ExternalAuthenticationAccessTokenUpdateResponse>(responseAsString);
}
}
if (refreshResponse?.AccessToken == null)
{
throw new Exception("Refresh Access Token request failed. User token might be invalid");
}
var expires = DateTime.UtcNow.AddSeconds(refreshResponse.ExpiresIn);
await UpdateExternalAuthLink(externalAuthenticationLink, refreshResponse.AccessToken, expires);
return(refreshResponse);
}
