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