plugin_validate_password.h

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/* Copyright (c) 2012, 2025, Oracle and/or its affiliates.
 
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#ifndef MYSQL_PLUGIN_VALIDATE_PASSWORD_INCLUDED
#define MYSQL_PLUGIN_VALIDATE_PASSWORD_INCLUDED
 
/**
  @file include/mysql/plugin_validate_password.h
  API for validate_password plugin. (MYSQL_VALIDATE_PASSWORD_PLUGIN)
*/
 
#include <mysql/plugin.h>
#define MYSQL_VALIDATE_PASSWORD_INTERFACE_VERSION 0x0100
 
typedef void *mysql_string_handle;
 
/**
  This plugin type defines interface that the server uses to
  enforce a password policy.
 
  The policy is enfoced through st_mysql_validate_password::validate_password()
  that answers the question of whether this password is good enough or not.
 
  There's one auxiliary function
  st_mysql_validate_password::get_password_strength() that can be used by
  password changing UIs to display a password strength meter as the user enters
  a password.
 
  Since plugins may need that functionality there's a plugin service
  @ref mysql_password_policy_service_st exposing
  it to other plugins.
 
  There also is a default password policy plugin
  "validate_password" built into the server binary that
  implements this plugin API.
 
  @sa mysql_password_policy_service_st
*/
struct st_mysql_validate_password {
  int interface_version;
  /**
    Checks if a password is valid by the password policy
 
    @param password  The password to validate
    @retval true   password meets the password validation plugin policy
    @retval false  password does not meet the validation policy
  */
  int (*validate_password)(mysql_string_handle password);
  /**
    Calculates the strength of a password in the scale of 0 to 100.
 
    @param password The password to evaluate the strength of
    @return  The strength of the password (0-100)
  */
  int (*get_password_strength)(mysql_string_handle password);
};
#endif