public string IsAuthorized(string username, string roleName, string token)
{
MembershipUser user = Membership.GetAllUsers()[username];
Configuration config = ConfigurationManager.OpenExeConfiguration(HostingEnvironment.MapPath("~") + "\\web.config");
SessionStateSection sessionStateConfig = (SessionStateSection)config.SectionGroups.Get("system.web").Sections.Get("sessionState");
InMemoryInstances instance = InMemoryInstances.Instance;
// Check for session state timeout (could use a constant here instead if you don't want to rely on the config).
if (user.LastLoginDate.AddMinutes(sessionStateConfig.Timeout.TotalMinutes) < DateTime.Now)
{
// Remove token from the singleton in this instance, effectively a logout.
instance.removeTokenUserPair(username);
return("User Unauthorized - login has expired!");
}
if (!instance.checkTokenUserPair(username, token))
{
return("User Unauthorized - not a valid token!");
}
// Check for role membership.
if (!Roles.GetUsersInRole(roleName).Contains(user.UserName))
{
return("User Unauthorized - Does not belong in that role!");
}
return("Success - User is Authorized!");
}
public string AuthenticateUser(string username, string encryptedPassword)
{
if (Membership.ValidateUser(username, Decrypt(encryptedPassword)))
{
// Not sure if this is actually needed, but reading some documentation I think it's a safe bet to do here anyway.
Membership.GetAllUsers()[username].LastLoginDate = DateTime.Now;
// Send back a token!
Guid token = Guid.NewGuid();
// Store a token for this username.
InMemoryInstances instance = InMemoryInstances.Instance;
instance.removeTokenUserPair(username); //Because we don't implement a "Logout" method.
instance.addTokenUserPair(username, token.ToString());
return(token.ToString());
}
return("Error - User was not able to be validated!");
}
