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
52 PAM_EXTERN int
pam_sm_authenticate(pam_handle_t * pamh,int flags __unused,int argc __unused,const char * argv[]__unused)53 pam_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
87 PAM_EXTERN int
pam_sm_setcred(pam_handle_t * pamh __unused,int flags __unused,int argc __unused,const char * argv[]__unused)88 pam_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
95 PAM_MODULE_ENTRY("pam_opieaccess");
96