2 * Copyright (c) 2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2011 Dag-Erling Smørgrav
6 * Portions of this software were developed for the FreeBSD Project by
7 * ThinkSec AS and NAI Labs, the Security Research Division of Network
8 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
9 * ("CBOSS"), as part of the DARPA CHATS research program.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote
20 * products derived from this software without specific prior written
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #include <sys/types.h>
50 #define PAM_SM_ACCOUNT
52 #include <security/pam_appl.h>
53 #include <security/pam_modules.h>
54 #include <security/openpam.h>
57 pam_group(pam_handle_t *pamh)
60 const char *group, *user;
66 /* get target account */
67 if (pam_get_user(pamh, &user, NULL) != PAM_SUCCESS ||
68 user == NULL || (pwd = getpwnam(user)) == NULL)
69 return (PAM_AUTH_ERR);
70 if (pwd->pw_uid != 0 && openpam_get_option(pamh, "root_only"))
73 /* check local / remote */
74 local = openpam_get_option(pamh, "luser") ? 1 : 0;
75 remote = openpam_get_option(pamh, "ruser") ? 1 : 0;
76 if (local && remote) {
77 openpam_log(PAM_LOG_ERROR, "(pam_group) "
78 "the luser and ruser options are mutually exclusive");
79 return (PAM_SERVICE_ERR);
81 /* we already have the correct struct passwd */
84 openpam_log(PAM_LOG_NOTICE, "(pam_group) "
85 "neither luser nor ruser specified, assuming ruser");
86 /* default / historical behavior */
87 if (pam_get_item(pamh, PAM_RUSER, &ruser) != PAM_SUCCESS ||
88 ruser == NULL || (pwd = getpwnam(ruser)) == NULL)
89 return (PAM_AUTH_ERR);
92 /* get regulating group */
93 if ((group = openpam_get_option(pamh, "group")) == NULL)
95 if ((grp = getgrnam(group)) == NULL || grp->gr_mem == NULL)
98 /* check if user's own primary group */
99 if (pwd->pw_gid == grp->gr_gid)
102 /* iterate over members */
103 for (list = grp->gr_mem; list != NULL && *list != NULL; ++list)
104 if (strcmp(*list, pwd->pw_name) == 0)
108 if (openpam_get_option(pamh, "deny"))
109 return (PAM_SUCCESS);
110 return (PAM_AUTH_ERR);
112 if (openpam_get_option(pamh, "deny"))
113 return (PAM_AUTH_ERR);
114 return (PAM_SUCCESS);
116 if (openpam_get_option(pamh, "fail_safe"))
123 pam_sm_authenticate(pam_handle_t *pamh, int flags __unused,
124 int argc __unused, const char *argv[] __unused)
127 return (pam_group(pamh));
131 pam_sm_setcred(pam_handle_t * pamh __unused, int flags __unused,
132 int argc __unused, const char *argv[] __unused)
135 return (PAM_SUCCESS);
139 pam_sm_acct_mgmt(pam_handle_t *pamh, int flags __unused,
140 int argc __unused, const char *argv[] __unused)
143 return (pam_group(pamh));
146 PAM_MODULE_ENTRY("pam_group");