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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright (C) 2010 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
/*
* Declarations for password quality plugin module implementors.
*
* The password quality pluggable interface currently has only one supported
* major version, which is 1. Major version 1 has a current minor version
* number of 1.
*
* Password quality plugin modules should define a function named
* pwqual_<modulename>_initvt, matching the signature:
*
* krb5_error_code
* pwqual_modname_initvt(krb5_context context, int maj_ver, int min_ver,
* krb5_plugin_vtable vtable);
*
* The initvt function should:
*
* - Check that the supplied maj_ver number is supported by the module, or
* return KRB5_PLUGIN_VER_NOTSUPP if it is not.
*
* - Cast the vtable pointer as appropriate for maj_ver:
* maj_ver == 1: Cast to krb5_pwqual_vtable
*
* - Initialize the methods of the vtable, stopping as appropriate for the
* supplied min_ver. Optional methods may be left uninitialized.
*
* Memory for the vtable is allocated by the caller, not by the module.
*/
#ifndef KRB5_PWQUAL_PLUGIN_H
#define KRB5_PWQUAL_PLUGIN_H
#include <krb5/krb5.h>
#include <krb5/plugin.h>
#include <kadm5/admin.h>
/* An abstract type for password quality module data. */
typedef struct krb5_pwqual_moddata_st *krb5_pwqual_moddata;
/*** Method type declarations ***/
/* Optional: Initialize module data. dictfile is the realm's configured
* dictionary filename. */
typedef krb5_error_code
(*krb5_pwqual_open_fn)(krb5_context context, const char *dict_file,
krb5_pwqual_moddata *data);
/*
* Mandatory: Check a password for the principal princ, which has an associated
* password policy named policy_name (or no associated policy if policy_name is
* NULL). The parameter languages, if not NULL, contains a null-terminated
* list of client-specified language tags as defined in RFC 5646. The method
* should return one of the following errors if the password fails quality
* standards:
*
* - KADM5_PASS_Q_TOOSHORT: password should be longer
* - KADM5_PASS_Q_CLASS: password must have more character classes
* - KADM5_PASS_Q_DICT: password contains dictionary words
* - KADM5_PASS_Q_GENERIC: unspecified quality failure
*
* The module should also set an extended error message with
* krb5_set_error_message(). The message may be localized according to one of
* the language tags in languages.
*/
typedef krb5_error_code
(*krb5_pwqual_check_fn)(krb5_context context, krb5_pwqual_moddata data,
const char *password, const char *policy_name,
krb5_principal princ, const char **languages);
/* Optional: Release resources used by module data. */
typedef void
(*krb5_pwqual_close_fn)(krb5_context context, krb5_pwqual_moddata data);
/*** vtable declarations **/
/* Password quality plugin vtable for major version 1. */
typedef struct krb5_pwqual_vtable_st {
const char *name; /* Mandatory: name of module. */
krb5_pwqual_open_fn open;
krb5_pwqual_check_fn check;
krb5_pwqual_close_fn close;
/* Minor version 1 ends here. */
} *krb5_pwqual_vtable;
#endif /* KRB5_PWQUAL_PLUGIN_H */