/// <summary>
/// Refresh expired access token
/// </summary>
/// <param name="token">Access token</param>
/// <returns>Refreshed access token</returns>
public static ICloudStorageAccessToken RefreshToken(ICloudStorageAccessToken token)
{
var sdToken = token as OAuth20Token;
if (sdToken == null || !CanRefresh(sdToken))
{
throw new ArgumentException("Can not refresh given token", "token");
}
var query = string.Format("client_id={0}&client_secret={1}&redirect_uri={2}&grant_type=refresh_token&refresh_token={3}",
sdToken.ClientID, sdToken.ClientSecret, sdToken.RedirectUri, sdToken.RefreshToken);
var json = SkyDriveRequestHelper.PerformRequest(SkyDriveConstants.OAuth20TokenUrl, "application/x-www-form-urlencoded", "POST", query, 2);
if (json != null)
{
var refreshed = OAuth20Token.FromJson(json);
refreshed.ClientID = sdToken.ClientID;
refreshed.ClientSecret = sdToken.ClientSecret;
refreshed.RedirectUri = sdToken.RedirectUri;
refreshed.Timestamp = DateTime.UtcNow;
return(refreshed);
}
return(token);
}
/// <summary>
/// Exchange your authorization code for a valid access token
/// </summary>
/// <param name="clientID">ID of your app</param>
/// <param name="clientSecret">Secret of your app</param>
/// <param name="redirectUri">Redirect uri you used to obtained authorization code. Serves as request validator</param>
/// <param name="authCode">Authorization code</param>
/// <returns>Access token</returns>
public static ICloudStorageAccessToken GetAccessToken(string clientID, string clientSecret, string redirectUri, string authCode)
{
if (string.IsNullOrEmpty(clientID))
{
throw new ArgumentNullException("clientID");
}
if (string.IsNullOrEmpty(clientSecret))
{
throw new ArgumentNullException("clientSecret");
}
if (string.IsNullOrEmpty(authCode))
{
throw new ArgumentNullException("authCode");
}
if (string.IsNullOrEmpty(redirectUri))
{
redirectUri = SkyDriveConstants.DefaultRedirectUri;
}
var query = string.Format("client_id={0}&redirect_uri={1}&client_secret={2}&code={3}&grant_type=authorization_code",
clientID, redirectUri, clientSecret, authCode);
var json = SkyDriveRequestHelper.PerformRequest(SkyDriveConstants.OAuth20TokenUrl, "application/x-www-form-urlencoded", "POST", query, 2);
if (json != null)
{
var token = OAuth20Token.FromJson(json);
token.ClientID = clientID;
token.ClientSecret = clientSecret;
token.RedirectUri = redirectUri;
token.Timestamp = DateTime.UtcNow;
return(token);
}
return(null);
}
