2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2002 Danny Braniss
6 * Copyright (c) 2001,2002 Networks Associates Technology, Inc.
9 * Portions of this software were developed for the FreeBSD Project by
10 * ThinkSec AS and NAI Labs, the Security Research Division of Network
11 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
12 * ("CBOSS"), as part of the DARPA CHATS research program.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. The name of the author may not be used to endorse or promote
23 * products derived from this software without specific prior written
26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * $FreeBSD: head/lib/libpam/modules/pam_rhosts/pam_rhosts.c 326219 2017-11-26 02:00:33Z pfg $
47 #include <security/pam_appl.h>
48 #include <security/pam_modules.h>
49 #include <security/pam_mod_misc.h>
51 #define OPT_ALLOW_ROOT "allow_root"
54 pam_sm_authenticate(pam_handle_t
*pamh
, int flags __unused
,
55 int argc __unused
, const char *argv
[] __unused
)
59 const void *ruser
, *rhost
;
62 err
= pam_get_user(pamh
, &user
, NULL
);
63 if (err
!= PAM_SUCCESS
)
66 if ((pw
= getpwnam(user
)) == NULL
)
67 return (PAM_USER_UNKNOWN
);
68 if (pw
->pw_uid
== 0 &&
69 openpam_get_option(pamh
, OPT_ALLOW_ROOT
) == NULL
)
70 return (PAM_AUTH_ERR
);
72 err
= pam_get_item(pamh
, PAM_RUSER
, &ruser
);
73 if (err
!= PAM_SUCCESS
)
74 return (PAM_AUTH_ERR
);
76 err
= pam_get_item(pamh
, PAM_RHOST
, &rhost
);
77 if (err
!= PAM_SUCCESS
)
78 return (PAM_AUTH_ERR
);
80 superuser
= (strcmp(user
, "root") == 0);
81 err
= ruserok(rhost
, superuser
, ruser
, user
);
83 return (PAM_AUTH_ERR
);
89 pam_sm_setcred(pam_handle_t
*pamh __unused
, int flags __unused
,
90 int argc __unused
, const char *argv
[] __unused
)
96 PAM_MODULE_ENTRY("pam_rhosts");