public static bool IsIdentityRecognized(TokenIdentification identification)
{
var basePath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase);
var filePath = Path.Combine(basePath.Substring(6), LoginDirectory, LoginFile);
string validUsername, validPassword;
using (StreamReader r = File.OpenText(filePath))
{
string json = r.ReadToEnd();
TokenIdentification credentials = JsonConvert.DeserializeObject <TokenIdentification>(json);
validUsername = EncryptionHelper.Decrypt(credentials.Username);
validPassword = EncryptionHelper.Decrypt(credentials.Password);
}
if (identification.Username.Equals(validUsername) && identification.Password.Equals(validPassword))
{
return(true);
}
return(false);
}
public static string GenerateToken(TokenIdentification identification, int expireMinutes = 20)
{
var tokenHandler = new JwtSecurityTokenHandler();
var now = DateTime.UtcNow;
var tokenDescriptor = new SecurityTokenDescriptor()
{
Subject = new ClaimsIdentity(new[]
{
new Claim(ClaimTypes.Name, identification.Username)
}),
Expires = now.AddMinutes(Convert.ToInt32(expireMinutes)),
SigningCredentials = new SigningCredentials(SigningKey, SecurityAlgorithms.HmacSha256Signature)
};
IdentityModelEventSource.ShowPII = true;
var stoken = tokenHandler.CreateToken(tokenDescriptor);
var token = tokenHandler.WriteToken(stoken);
return(token);
}
public IHttpActionResult GenerateToken([FromBody] TokenIdentification identification)
{
if (!ModelState.IsValid || identification == null || identification.Username == null || identification.Password == null)
{
return(BadRequest());
}
var recognized = TokenManager.IsIdentityRecognized(identification);
if (!recognized)
{
return(BadRequest("Not recognized."));
}
var token = TokenManager.GenerateToken(identification);
if (token == null)
{
return(BadRequest("Invalid token."));
}
return(Ok(token));
}