1 /* $NetBSD: openpam_nullconv.c,v 1.4 2023/06/30 21:46:20 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
5 * Copyright (c) 2004-2011 Dag-Erling Smørgrav
6 * All rights reserved.
7 *
8 * This software was developed for the FreeBSD Project by ThinkSec AS and
9 * Network Associates Laboratories, the Security Research Division of
10 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
11 * ("CBOSS"), as part of the DARPA CHATS research program.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. The name of the author may not be used to endorse or promote
22 * products derived from this software without specific prior written
23 * permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37
38 #ifdef HAVE_CONFIG_H
39 # include "config.h"
40 #endif
41
42 #include <sys/cdefs.h>
43 __RCSID("$NetBSD: openpam_nullconv.c,v 1.4 2023/06/30 21:46:20 christos Exp $");
44
45 #include <sys/types.h>
46
47 #include <security/pam_appl.h>
48
49 #include "openpam_impl.h"
50
51 /*
52 * OpenPAM extension
53 *
54 * Null conversation function
55 */
56
57 int
openpam_nullconv(int n,const struct pam_message ** msg,struct pam_response ** resp,void * data)58 openpam_nullconv(int n,
59 const struct pam_message **msg,
60 struct pam_response **resp,
61 void *data)
62 {
63
64 ENTER();
65 /*LINTED unused*/
66 (void)n;
67 /*LINTED unused*/
68 (void)msg;
69 /*LINTED unused*/
70 (void)resp;
71 /*LINTED unused*/
72 (void)data;
73 RETURNC(PAM_CONV_ERR);
74 }
75
76 /*
77 * Error codes:
78 *
79 * PAM_CONV_ERR
80 */
81
82 /**
83 * The =openpam_nullconv function is a null conversation function suitable
84 * for applications that want to use PAM but don't support interactive
85 * dialog with the user.
86 * Such applications should set =PAM_AUTHTOK to whatever authentication
87 * token they've obtained on their own before calling =pam_authenticate
88 * and / or =pam_chauthtok, and their PAM configuration should specify the
89 * ;use_first_pass option for all modules that require access to the
90 * authentication token, to make sure they use =PAM_AUTHTOK rather than
91 * try to query the user.
92 *
93 * >openpam_ttyconv
94 * >pam_prompt
95 * >pam_set_item
96 * >pam_vprompt
97 */
98