1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* lib/kadm5/srv/pwqual_empty.c */
3 /*
4 * Copyright (C) 2010 by the Massachusetts Institute of Technology.
5 * All rights reserved.
6 *
7 * Export of this software from the United States of America may
8 * require a specific license from the United States Government.
9 * It is the responsibility of any person or organization contemplating
10 * export to obtain such a license before exporting.
11 *
12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
13 * distribute this software and its documentation for any purpose and
14 * without fee is hereby granted, provided that the above copyright
15 * notice appear in all copies and that both that copyright notice and
16 * this permission notice appear in supporting documentation, and that
17 * the name of M.I.T. not be used in advertising or publicity pertaining
18 * to distribution of the software without specific, written prior
19 * permission. Furthermore if you modify this software you must label
20 * your software as modified software and not distribute it in such a
21 * fashion that it might be confused with the original M.I.T. software.
22 * M.I.T. makes no representations about the suitability of
23 * this software for any purpose. It is provided "as is" without express
24 * or implied warranty.
25 */
26
27 /* Password quality module to reject empty passwords */
28
29 #include "k5-int.h"
30 #include <krb5/pwqual_plugin.h>
31 #include "server_internal.h"
32
33 static krb5_error_code
empty_check(krb5_context context,krb5_pwqual_moddata data,const char * password,const char * policy_name,krb5_principal princ,const char ** languages)34 empty_check(krb5_context context, krb5_pwqual_moddata data,
35 const char *password, const char *policy_name,
36 krb5_principal princ, const char **languages)
37 {
38 /* Unlike other built-in modules, this one operates even for principals
39 * with no password policy. */
40 if (*password == '\0') {
41 k5_setmsg(context, KADM5_PASS_Q_TOOSHORT,
42 _("Empty passwords are not allowed"));
43 return KADM5_PASS_Q_TOOSHORT;
44 }
45 return 0;
46 }
47
48 krb5_error_code
pwqual_empty_initvt(krb5_context context,int maj_ver,int min_ver,krb5_plugin_vtable vtable)49 pwqual_empty_initvt(krb5_context context, int maj_ver, int min_ver,
50 krb5_plugin_vtable vtable)
51 {
52 krb5_pwqual_vtable vt;
53
54 if (maj_ver != 1)
55 return KRB5_PLUGIN_VER_NOTSUPP;
56 vt = (krb5_pwqual_vtable)vtable;
57 vt->name = "empty";
58 vt->check = empty_check;
59 return 0;
60 }
61