protected Task <IPrincipal> AuthenticateJwtToken(string token, JwtIssuer jwtProvider)
{
if (this.ValidateToken(jwtProvider, token, out var claimsPrincipal))
{
// based on username to get more information from database in order to build local identity
var claims = claimsPrincipal.Claims;
var identity = new ClaimsIdentity(claims, "Jwt");
IPrincipal user = new ClaimsPrincipal(identity);
return(Task.FromResult(user));
}
return(Task.FromResult <IPrincipal>(null));
}
private bool ValidateToken(JwtIssuer jwtIssuer, string token, out ClaimsPrincipal claimsPrincipal)
{
claimsPrincipal = jwtIssuer.GetPrincipal(token);
var identity = claimsPrincipal?.Identity as ClaimsIdentity;
if (identity == null)
{
return(false);
}
if (!identity.IsAuthenticated)
{
return(false);
}
return(true);
}
