private async Task <bool> UpdateUserAsync(string username, UpdateDefinition <User> updateDefinition)
{
var normalizedUsername = UsernameNormalizer.Normalize(username);
var updateResult = await userCollection.UpdateOneAsync(x => x.UserName == normalizedUsername, updateDefinition);
return(updateResult.IsAcknowledged && updateResult.ModifiedCount == 1);
}
public async Task <bool> DeleteUserAsync(string username)
{
var normalizedUsername = UsernameNormalizer.Normalize(username);
var collectionPermissionDeletionTask = collectionPermissionsCollection.DeleteManyAsync(x => x.Username == normalizedUsername);
var userDeletionTask = userCollection.DeleteOneAsync(x => x.UserName == normalizedUsername);
await Task.WhenAll(collectionPermissionDeletionTask, userDeletionTask);
return(userDeletionTask.Result.DeletedCount == 1);
}
public async Task <bool> ChangePasswordAsync(string username, string password)
{
var normalizedUsername = UsernameNormalizer.Normalize(username);
var matchingUser = await userCollection.Find(x => x.UserName == normalizedUsername).FirstOrDefaultAsync();
if (matchingUser == null)
{
return(false);
}
var saltBytes = Convert.FromBase64String(matchingUser.Salt);
var passwordHash = PasswordHasher.Hash(password, saltBytes, PasswordHasher.RecommendedHashLength);
var passwordBase64 = Convert.ToBase64String(passwordHash);
return(await UpdateUserAsync(normalizedUsername, Builders <User> .Update.Set(x => x.PasswordHash, passwordBase64)));
}
public static User Create(RegistrationInformation registrationInformation)
{
var normalizedUsername = UsernameNormalizer.Normalize(registrationInformation.Username);
var salt = CreateSalt();
var saltBase64 = Convert.ToBase64String(salt);
var passwordHash = PasswordHasher.Hash(registrationInformation.Password, salt, PasswordHasher.RecommendedHashLength);
var passwordHashBase64 = Convert.ToBase64String(passwordHash);
return(new User(
normalizedUsername,
registrationInformation.FirstName,
registrationInformation.LastName,
registrationInformation.Email,
saltBase64,
passwordHashBase64,
new List <Role>()));
}
public async Task <User> FindUserAsync(string username)
{
var normalizedUsername = UsernameNormalizer.Normalize(username);
return(await userCollection.Find(x => x.UserName == normalizedUsername).FirstOrDefaultAsync());
}