public async Task <AuthenticationResult> RegisterAsync(string email, string password)
{
var newUser = await userManager.FindByEmailAsync(email);
if (newUser != null) // If user exist
{
return(AuthenticationResult.FailResult("User alredy exist"));
}
var newUserId = Guid.NewGuid().ToString();
newUser = new IdentityUser()
{
Id = newUserId, Email = email, UserName = email
};
var creationResult = await userManager.CreateAsync
(user : newUser,
password : password);
// Add this claim into the database
await userManager.AddClaimAsync(newUser, new Claim("tags.view", "true"));
if (!creationResult.Succeeded)
{
return(AuthenticationResult.FailResult(creationResult.Errors.Select(r => r.Description)));
}
return(await GenerateAuthenticationResultForUser(newUser));
}
public async Task <AuthenticationResult> RegisterAsync(string email, string password)
{
// if user doesnt exists, create a new user
var newUser = new AppUser()
{
Email = email, UserName = email
};
#if TESTINGIDENTITY
//
// Email Confirmation
//
string cToken = await userManager.GenerateEmailConfirmationTokenAsync(newUser);
string b64token = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(cToken));
var callbackUrl = new Url($"Callback/url/{b64token}");
// Email Service that send email
// email_service.SendEmailAsync(callbackUrl);
if (userManager.Options.SignIn.RequireConfirmedEmail)
{
// return to some page to wait until he confirm his email
// just testing Identity
if (newUser.Email.EndsWith("benzeine.com"))
{
newUser.AccessFailedCount = 100;
newUser.EmailConfirmed = true;
newUser.LockoutEnabled = false;
//newUser.LockoutEnd = DateTime.Today.AddDays(30);
}
}
#endif
var identityResult = await userManager.CreateAsync(newUser, password);
if (!identityResult.Succeeded)
{
return(AuthenticationResult.FailResult(identityResult.Errors.Select(e => e.Description)));
}
await userManager.AddToRoleAsync(newUser, "User");
return(await GenerateAuthenticationResultAsync(newUser));
}
// LOGIN
public async Task <AuthenticationResult> LoginAsync(string email, string password)
{
var user = await userManager.FindByEmailAsync(email);
if (user == null)
{
return(AuthenticationResult.FailResult("User doesnt exist"));
}
bool isPasswordValid = await userManager.CheckPasswordAsync(user, password);
if (!isPasswordValid)
{
return(AuthenticationResult.FailResult("User/Password combination is wrong"));
}
return(await GenerateAuthenticationResultForUser(user));
}
public async Task <AuthenticationResult> LoginAsync(string email, string password)
{
var user = await userManager.FindByEmailAsync(email);
if (user == null)
{
return(AuthenticationResult.FailResult("Sorry, user doesn't exist. Don't do that again"));
}
// if passwords are mattched we generate JWT
if (await userManager.CheckPasswordAsync(user, password))
{
return(await GenerateAuthenticationResultAsync(user));
}
else
{
return(AuthenticationResult.FailResult("Sorry, Passwords don't match, please dry your fingers"));
}
}
public async Task <AuthenticationResult> RefreshTokenAsync(string token, string refreshToken)
{
ClaimsPrincipal principal = GetPrincipalFromToken(token);
if (principal == null)
{
return(AuthenticationResult.FailResult("Invalid Token"));
}
var unix_expiration_dateOfToken = long.Parse(principal.Claims.Single
(x => x.Type == JwtRegisteredClaimNames.Exp).Value);
var utc_expiration_date = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)
.AddSeconds(unix_expiration_dateOfToken)
.Subtract(jwtOptions.TokenLifeTime);
if (utc_expiration_date > DateTime.UtcNow)
{
return(AuthenticationResult.FailResult("This token hasn't expired yet"));
}
var jti = principal.Claims.Single
(x => x.Type == JwtRegisteredClaimNames.Jti).Value;
RefreshToken stored_refresh_token = await
context.RefreshTokens.SingleOrDefaultAsync(x => x.Token == refreshToken);
if (stored_refresh_token == null)
{
return(AuthenticationResult.FailResult("Hey, Refresh Token doesnt exixst"));
}
// if refresh token expired
if (DateTime.UtcNow > stored_refresh_token.ExpirationDate)
{
return(AuthenticationResult.FailResult("This refresh token has expired"));
}
if (stored_refresh_token.Invalidated)
{
return(AuthenticationResult.FailResult("This refresh token has been invalidated"));
}
if (stored_refresh_token.IsUsed)
{
return(AuthenticationResult.FailResult("This refresh token has been used"));
}
if (stored_refresh_token.JwtId != jti)
{
return(AuthenticationResult.FailResult("This refresh token doesn't match JTI"));
}
stored_refresh_token.IsUsed = true;
context.RefreshTokens.Update(stored_refresh_token);
await context.SaveChangesAsync();
var user = await
userManager.FindByIdAsync(principal.Claims.Single(x => x.Type == "id").Value);
return(await GenerateAuthenticationResultForUser(user));
#region Local Methods
// local methods
ClaimsPrincipal GetPrincipalFromToken(string _token)
{
var jwtHandler = new JwtSecurityTokenHandler();
try
{
ClaimsPrincipal _principal =
jwtHandler.ValidateToken(_token, tokenValidationParameters, out SecurityToken validatedToken);
if (!IsJwtWithValidSecurityAlgorithm(validatedToken))
{
return(null);
}
return(_principal);
}
catch (Exception)
{
return(null);
}
// local methods
bool IsJwtWithValidSecurityAlgorithm(SecurityToken validatedToken)
{
return((validatedToken is JwtSecurityToken jwt) &&
jwt.Header.Alg.Equals(SecurityAlgorithms.HmacSha256, StringComparison.InvariantCulture));
}
}
#endregion
}
