1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* lib/krb5/os/localauth_an2ln.c - an2ln localauth module */
3 /*
4 * Copyright (C) 2013 by the Massachusetts Institute of Technology. All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
30 * OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "k5-int.h"
34 #include "os-proto.h"
35 #include <krb5/localauth_plugin.h>
36
37 #define MAX_USERNAME 65
38
39 static krb5_error_code
an2ln_userok(krb5_context context,krb5_localauth_moddata data,krb5_const_principal aname,const char * lname)40 an2ln_userok(krb5_context context, krb5_localauth_moddata data,
41 krb5_const_principal aname, const char *lname)
42 {
43 krb5_error_code ret;
44 char kuser[MAX_USERNAME];
45
46 ret = krb5_aname_to_localname(context, aname, sizeof(kuser), kuser);
47 return (ret == 0 && strcmp(kuser, lname) == 0) ? 0 : KRB5_PLUGIN_NO_HANDLE;
48 }
49
50 krb5_error_code
localauth_an2ln_initvt(krb5_context context,int maj_ver,int min_ver,krb5_plugin_vtable vtable)51 localauth_an2ln_initvt(krb5_context context, int maj_ver, int min_ver,
52 krb5_plugin_vtable vtable)
53 {
54 krb5_localauth_vtable vt = (krb5_localauth_vtable)vtable;
55
56 vt->name = "an2ln";
57 vt->userok = an2ln_userok;
58 return 0;
59 }
60