/* Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.

This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation.  The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License, version 2.0, for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

#ifndef VALIDATE_PASSWORD_SERVICE_H
#define VALIDATE_PASSWORD_SERVICE_H

#include <mysql/components/service.h>
#include <mysql/components/services/mysql_string.h>

/**
  This component defines interface that the server uses to enforce a
  password policy.

  The policy is enfoced through two methods
  1) validate_password_imp::validate() that answers the question of whether
     this password is good enough or not.

  2) validate_password_imp::get_strength() that can be used by password
     changing UIs to display a password strength meter in the range of [0-100]
     as the user enters a password.
*/
BEGIN_SERVICE_DEFINITION(validate_password)
/**
  Checks if a password is valid by the password policy.

  @param thd MYSQL THD object
  @param password Given Password
  @return Status of performed operation
  @return false success (valid password)
  @return true failure (invalid password)
*/
DECLARE_BOOL_METHOD(validate, (void *thd, my_h_string password));

/**
  Calculates the strength of a password in the scale of 0 to 100.

  @param thd MYSQL THD object
  @param password Given Password
  @param [out] strength pointer to handle the strength of the given password.
               in the range of [0-100], where 0 is week password and
               100 is strong password
  @return Status of performed operation
  @return false success
  @return true failure
*/
DECLARE_BOOL_METHOD(get_strength,
                    (void *thd, my_h_string password, unsigned int *strength));

END_SERVICE_DEFINITION(validate_password)

#endif /* VALIDATE_PASSWORD_SERVICE_H */