public async Task <string> GetTokenAsync()
{
if (!this.token.IsValidAndNotExpiring)
{
this.token = await this.GetNewAccessToken();
}
return(token.AccessToken);
}
private async Task <Auth0Token> GetNewAccessToken()
{
var token = new Auth0Token();
var client = new HttpClient();
var client_id = ClientId;
var client_secret = ClientSecret;
var clientCreds = System.Text.Encoding.UTF8.GetBytes($"{client_id}:{client_secret}");
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Basic", System.Convert.ToBase64String(clientCreds));
var postMessage = new Dictionary <string, string>();
postMessage.Add("grant_type", "client_credentials");
postMessage.Add("audience", "https://utgapi.com");
//postMessage.Add("scope", "access_token");
var request = new HttpRequestMessage(HttpMethod.Post, "https://tikisoft.auth0.com/oauth/token")
{
Content = new FormUrlEncodedContent(postMessage)
};
var response = await client.SendAsync(request);
if (response.IsSuccessStatusCode)
{
var json = await response.Content.ReadAsStringAsync();
token = JsonConvert.DeserializeObject <Auth0Token>(json);
token.ExpiresAt = DateTime.UtcNow.AddSeconds(this.token.ExpiresIn);
}
else
{
throw new ApplicationException("Unable to retrieve access token from Auth0");
}
return(token);
}
public static void WriteSessionCookie(HttpApplication application, Auth0Token token)
{
var request = application.Context.Request;
var response = application.Context.Response;
var bytes = EncodeCookie(token);
var cookie = Convert.ToBase64String(bytes);
var chunkCount = cookie.Length / CookieChunkSize + (cookie.Length % CookieChunkSize == 0 ? 0 : 1);
for (int i = 0; i < chunkCount; ++i)
{
var setCookie = new StringBuilder();
setCookie.Append(LiveAuth);
if (i > 0)
{
setCookie.Append(i.ToString(CultureInfo.InvariantCulture));
}
setCookie.Append('=');
int startIndex = i * CookieChunkSize;
setCookie.Append(cookie.Substring(startIndex, Math.Min(CookieChunkSize, cookie.Length - startIndex)));
setCookie.Append("; path=/");
if (request.Url.Scheme == "https")
{
setCookie.Append("; secure");
}
setCookie.Append("; HttpOnly");
response.Headers.Add("Set-Cookie", setCookie.ToString());
}
var cookies = request.Cookies;
var index = chunkCount;
while (true)
{
var cookieName = LiveAuth;
if (index > 0)
{
cookieName += index.ToString(CultureInfo.InvariantCulture);
}
if (cookies[cookieName] == null)
{
break;
}
// remove old cookie
response.Headers.Add("Set-Cookie", String.Format(DeleteCookieFormat, cookieName));
++index;
}
}
public static byte[] EncodeCookie(Auth0Token token)
{
var bytes = token.ToBytes();
for (int i = 0; i < DefaultCookieTransforms.Length; ++i)
{
bytes = DefaultCookieTransforms[i].Encode(bytes);
}
return bytes;
}