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
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD$");
37
38#define _BSD_SOURCE
39
40#include <sys/types.h>
41#include <opie.h>
42#include <pwd.h>
43#include <unistd.h>
44#include <syslog.h>
45
46#define PAM_SM_AUTH
47
48#include <security/pam_appl.h>
49#include <security/pam_modules.h>
50#include <security/pam_mod_misc.h>
51
52PAM_EXTERN int
53pam_sm_authenticate(pam_handle_t *pamh, int flags __unused,
54    int argc __unused, const char *argv[] __unused)
55{
56	struct opie opie;
57	struct passwd *pwent;
58	const void *luser, *rhost;
59	int r;
60
61	r = pam_get_item(pamh, PAM_USER, &luser);
62	if (r != PAM_SUCCESS)
63		return (r);
64	if (luser == NULL)
65		return (PAM_SERVICE_ERR);
66
67	pwent = getpwnam(luser);
68	if (pwent == NULL || opielookup(&opie, __DECONST(char *, luser)) != 0)
69		return (PAM_SUCCESS);
70
71	r = pam_get_item(pamh, PAM_RHOST, &rhost);
72	if (r != PAM_SUCCESS)
73		return (r);
74	if (rhost == NULL || *(const char *)rhost == '\0')
75		rhost = openpam_get_option(pamh, "allow_local") ?
76		    "" : "localhost";
77
78	if (opieaccessfile(__DECONST(char *, rhost)) != 0 &&
79	    opiealways(pwent->pw_dir) != 0)
80		return (PAM_SUCCESS);
81
82	PAM_VERBOSE_ERROR("Refused; remote host is not in opieaccess");
83
84	return (PAM_AUTH_ERR);
85}
86
87PAM_EXTERN int
88pam_sm_setcred(pam_handle_t *pamh __unused, int flags __unused,
89    int argc __unused, const char *argv[] __unused)
90{
91
92	return (PAM_SUCCESS);
93}
94
95PAM_MODULE_ENTRY("pam_opieaccess");
96