public async Task <JwtSecurityToken> ParseTokenFromContextAsync(HttpContext context)
{
return(await Task.Run(() => {
var token = context.Request.Headers["Authorization"].FirstOrDefault()?.Split(" ").Last();
if (token != null)
{
try
{
JwtSecurityTokenHandler tokenHandler = new JwtSecurityTokenHandler();
RSAManager rSAManager = RSAManager.GetInstance;
tokenHandler.ValidateToken(token, new TokenValidationParameters
{
ValidateIssuerSigningKey = true,
IssuerSigningKey = new RsaSecurityKey(rSAManager.Key.Rsa.ExportParameters(false)),
ValidateIssuer = true,
ValidateAudience = false,
ValidateLifetime = true,
ValidIssuer = _configuration["Jwt:Issuer"],
ClockSkew = TimeSpan.Zero
}, out SecurityToken validatedToken);
return (JwtSecurityToken)validatedToken;
}
catch (Exception) {
return null;
}
}
return null;
}));
}
public async Task <Token> GenerateJwtTokenAsync(User trustedUser)
{
return(await Task.Run(() => {
try {
Token expToken = new Token {
ExpiryDate = (long)(DateTime.UtcNow.AddMinutes(10).Subtract(new DateTime(1970, 1, 1))).TotalSeconds,
UserId = trustedUser.UserId,
IssuedAt = (long)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds,
User = trustedUser,
Value = Guid.NewGuid().ToString()
};
if (expToken == null)
{
return null;
}
JwtSecurityTokenHandler tokenHandler = new JwtSecurityTokenHandler();
Claim[] claims = new Claim[] {
new Claim(JwtRegisteredClaimNames.Sub, Convert.ToString(trustedUser.UserId)),
new Claim(JwtRegisteredClaimNames.Iss, _configuration["Jwt:Issuer"]),
new Claim(JwtRegisteredClaimNames.Exp, expToken.ExpiryDate.ToString()),
new Claim(JwtRegisteredClaimNames.Jti, expToken.Value),
new Claim(JwtRegisteredClaimNames.Iat, expToken.IssuedAt.ToString()),
new Claim(ClaimTypes.Role, trustedUser.Role.ToString())
};
ClaimsIdentity identity = new ClaimsIdentity(claims);
RSAManager rSAManager = RSAManager.GetInstance;
SecurityTokenDescriptor descriptor = new SecurityTokenDescriptor {
Subject = identity,
Expires = DateTime.UtcNow.AddMinutes(10),
SigningCredentials = new SigningCredentials(rSAManager.Key, SecurityAlgorithms.RsaSsaPssSha256)
};
SecurityToken token = tokenHandler.CreateToken(descriptor);
string jwtToken = tokenHandler.WriteToken(token);
if (jwtToken != null)
{
expToken.JwtToken = jwtToken;
return expToken;
}
}
catch (Exception) {
return null;
}
return null;
}));
}
