public static bool Authenticate(out ResponseToken token)
{
string tokenText = Request[Constants.ResponseToken];
if (!ResponseToken.TryParse(tokenText, out token))
return false;
if (token.Seed != _seed)
return false;
SSOTicket ticket = new SSOTicket();
ticket.UserId = token.UserId;
ticket.TimeStamp = token.TimeStamp;
ticket.ExpireDuration = token.ExpireDuration;
ResetCookie(Constants.TokenCookieName, ticket.Encode());
return true;
}
public static bool TryParse(string tokenText, out ResponseToken token)
{
token = null;
if (string.IsNullOrEmpty(tokenText))
return false;
string textToDecypt = HttpUtility.UrlDecode(tokenText);
string[] vector = null;
if (!SSOEncrypt.TryParseVector(textToDecypt, out vector))
return false;
if (vector.Length != 5)
return false;
string userId = vector[0];
DateTime timeStamp = Convert.ToDateTime(vector[1]);
int expire = Convert.ToInt32(vector[2]);
string seed = vector[3];
int resultCode = Convert.ToInt32(vector[4]);
token = new ResponseToken(userId, timeStamp, expire, seed, resultCode);
return true;
}
public static void RedirectToApp(string returnUrl, ResponseToken token)
{
char appendChar = '?';
if (returnUrl.IndexOf('?') != -1)
appendChar = '&';
string redirectUrl = string.Format("{0}{1}{2}={3}", returnUrl, appendChar, Constants.ResponseToken, token.Encode());
Response.Redirect(redirectUrl);
}