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 * Network Associates Laboratories, the Security Research Division of
7 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
8 * ("CBOSS"), as part of the 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/openpam_restore_cred.c#3 $
|
| 34 * $P4: //depot/projects/openpam/lib/openpam_restore_cred.c#4 $ |
35 */
36
37#include <sys/param.h>
38
39#include <pwd.h>
40#include <stdlib.h>
41#include <unistd.h>
42
43#include <security/pam_appl.h>
44
45#include "openpam_impl.h"
46
47/*
48 * OpenPAM extension
49 *
50 * Restore credentials
51 */
52
53int
54openpam_restore_cred(pam_handle_t *pamh)
55{
56 struct pam_saved_cred *scred;
57 int r;
58
59 ENTER();
60 r = pam_get_data(pamh, PAM_SAVED_CRED, (const void **)&scred);
61 if (r != PAM_SUCCESS)
62 RETURNC(r);
63 if (scred == NULL)
64 RETURNC(PAM_SYSTEM_ERR);
|
65 if (seteuid(scred->euid) == -1 ||
66 setgroups(scred->ngroups, scred->groups) == -1 ||
67 setegid(scred->egid) == -1)
68 RETURNC(PAM_SYSTEM_ERR);
|
65 if (scred->euid != geteuid()) {
66 if (seteuid(scred->euid) == -1 ||
67 setgroups(scred->ngroups, scred->groups) == -1 ||
68 setegid(scred->egid) == -1)
69 RETURNC(PAM_SYSTEM_ERR);
70 } |
71 pam_set_data(pamh, PAM_SAVED_CRED, NULL, NULL);
72 RETURNC(PAM_SUCCESS);
73}
74
75/*
76 * Error codes:
77 *
78 * =pam_get_data
79 * PAM_SYSTEM_ERR
80 */
81
82/**
83 * The =openpam_restore_cred function restores the credentials saved by
84 * =openpam_borrow_cred.
85 *
86 * >setegid
87 * >seteuid
88 * >setgroups
89 */
|