source: openpam/trunk/lib/pam_get_authtok.c @ 93

Last change on this file since 93 was 93, checked in by Dag-Erling Smørgrav, 19 years ago

s/Technologies/Technology/ in copyright, and regenerate docs.

File size: 3.0 KB
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1/*-
2 * Copyright (c) 2002 Networks Associates Technology, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * NAI Labs, the Security Research Division of Network Associates, Inc.
7 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
8 * DARPA CHATS research program.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote
19 *    products derived from this software without specific prior written
20 *    permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $P4: //depot/projects/openpam/lib/pam_get_authtok.c#12 $
35 */
36
37#include <sys/param.h>
38
39#include <security/pam_appl.h>
40#include <security/openpam.h>
41
42#include "openpam_impl.h"
43
44/*
45 * OpenPAM extension
46 *
47 * Retrieve authentication token
48 */
49
50int
51pam_get_authtok(pam_handle_t *pamh,
52        const char **authtok,
53        const char *prompt)
54{
55        char *p, *resp;
56        int r, style;
57
58        if (pamh == NULL || authtok == NULL)
59                return (PAM_SYSTEM_ERR);
60
61        if (openpam_get_option(pamh, "try_first_pass") ||
62            openpam_get_option(pamh, "use_first_pass")) {
63                r = pam_get_item(pamh, PAM_AUTHTOK, (const void **)authtok);
64                if (r == PAM_SUCCESS && *authtok != NULL)
65                        return (PAM_SUCCESS);
66                else if (openpam_get_option(pamh, "use_first_pass"))
67                        return (r == PAM_SUCCESS ? PAM_AUTH_ERR : r);
68        }
69        if (pam_get_item(pamh, PAM_AUTHTOK_PROMPT,
70            (const void **)&p) != PAM_SUCCESS || p == NULL)
71                if (prompt == NULL)
72                        prompt = "Password:";
73        style = openpam_get_option(pamh, "echo_pass") ?
74            PAM_PROMPT_ECHO_ON : PAM_PROMPT_ECHO_OFF;
75        r = pam_prompt(pamh, style, &resp, "%s", p ? p : prompt);
76        if (r != PAM_SUCCESS)
77                return (r);
78        *authtok = resp;
79        return (pam_set_item(pamh, PAM_AUTHTOK, *authtok));
80}
81
82/*
83 * Error codes:
84 *
85 *      =pam_get_item
86 *      =pam_prompt
87 *      =pam_set_item
88 *      !PAM_SYMBOL_ERR
89 */
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