2 * Copyright (c) 2001 Mark R V Murray
4 * Copyright (c) 2001 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("$FreeBSD$");
40 #include <sys/types.h>
46 #define PAM_SM_ACCOUNT
48 #include <security/pam_appl.h>
49 #include <security/pam_modules.h>
50 #include <security/pam_mod_misc.h>
52 #define TTY_PREFIX "/dev/"
55 pam_sm_acct_mgmt(pam_handle_t *pamh __unused, int flags __unused,
56 int argc __unused, const char *argv[] __unused)
64 pam_err = pam_get_user(pamh, &user, NULL);
65 if (pam_err != PAM_SUCCESS)
67 if (user == NULL || (pwd = getpwnam(user)) == NULL)
68 return (PAM_SERVICE_ERR);
70 PAM_LOG("Got user: %s", user);
72 /* If the user is not root, secure ttys do not apply */
76 pam_err = pam_get_item(pamh, PAM_TTY, &tty);
77 if (pam_err != PAM_SUCCESS)
80 PAM_LOG("Got TTY: %s", (const char *)tty);
82 /* Ignore any "/dev/" on the PAM_TTY item */
83 if (tty != NULL && strncmp(TTY_PREFIX, tty, sizeof(TTY_PREFIX)) == 0) {
84 PAM_LOG("WARNING: PAM_TTY starts with " TTY_PREFIX);
85 tty = (const char *)tty + sizeof(TTY_PREFIX) - 1;
88 if (tty != NULL && (ty = getttynam(tty)) != NULL &&
89 (ty->ty_status & TTY_SECURE) != 0)
92 PAM_VERBOSE_ERROR("Not on secure TTY");
93 return (PAM_AUTH_ERR);
96 PAM_MODULE_ENTRY("pam_securetty");