2 * Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 2001 Mark R V Murray
6 * Copyright (c) 2001 Networks Associates Technology, Inc.
8 * Copyright (c) 2004 Joe R. Doupnik
11 * Portions of this software were developed for the FreeBSD Project by
12 * ThinkSec AS and NAI Labs, the Security Research Division of Network
13 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
14 * ("CBOSS"), as part of the DARPA CHATS research program.
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 * 3. The name of the author may not be used to endorse or promote
25 * products derived from this software without specific prior written
27 * 4. Neither the name of the University nor the names of its contributors
28 * may be used to endorse or promote products derived from this software
29 * without specific prior written permission.
31 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
35 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
39 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
40 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
59 #define PAM_SM_SESSION
61 #include <security/pam_appl.h>
62 #include <security/pam_modules.h>
63 #include <security/pam_mod_misc.h>
65 #define PAM_UTMPX_ID "utmpx_id"
68 pam_sm_open_session(pam_handle_t *pamh, int flags,
69 int argc __unused, const char *argv[] __unused)
72 struct utmpx *utx, utl;
75 const void *rhost, *tty;
79 pam_err = pam_get_user(pamh, &user, NULL);
80 if (pam_err != PAM_SUCCESS)
82 if (user == NULL || (pwd = getpwnam(user)) == NULL)
83 return (PAM_SERVICE_ERR);
84 PAM_LOG("Got user: %s", user);
86 pam_err = pam_get_item(pamh, PAM_RHOST, &rhost);
87 if (pam_err != PAM_SUCCESS) {
88 PAM_LOG("No PAM_RHOST");
91 pam_err = pam_get_item(pamh, PAM_TTY, &tty);
92 if (pam_err != PAM_SUCCESS) {
93 PAM_LOG("No PAM_TTY");
97 PAM_LOG("No PAM_TTY");
98 pam_err = PAM_SERVICE_ERR;
101 /* Strip /dev/ component. */
102 if (strncmp(tty, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
103 tty = (const char *)tty + sizeof(_PATH_DEV) - 1;
105 if ((flags & PAM_SILENT) == 0) {
106 if (setutxdb(UTXDB_LASTLOGIN, NULL) != 0) {
107 PAM_LOG("Failed to open lastlogin database");
109 utx = getutxuser(user);
110 if (utx != NULL && utx->ut_type == USER_PROCESS) {
111 t = utx->ut_tv.tv_sec;
112 if (*utx->ut_host != '\0')
113 pam_info(pamh, "Last login: %.*s from %s",
114 24 - 5, ctime(&t), utx->ut_host);
116 pam_info(pamh, "Last login: %.*s on %s",
117 24 - 5, ctime(&t), utx->ut_line);
123 id = malloc(sizeof utl.ut_id);
125 pam_err = PAM_SERVICE_ERR;
128 arc4random_buf(id, sizeof utl.ut_id);
130 pam_err = pam_set_data(pamh, PAM_UTMPX_ID, id, openpam_free_data);
131 if (pam_err != PAM_SUCCESS) {
136 memset(&utl, 0, sizeof utl);
137 utl.ut_type = USER_PROCESS;
138 memcpy(utl.ut_id, id, sizeof utl.ut_id);
139 strncpy(utl.ut_user, user, sizeof utl.ut_user);
140 strncpy(utl.ut_line, tty, sizeof utl.ut_line);
142 strncpy(utl.ut_host, rhost, sizeof utl.ut_host);
143 utl.ut_pid = getpid();
144 gettimeofday(&utl.ut_tv, NULL);
147 return (PAM_SUCCESS);
150 if (openpam_get_option(pamh, "no_fail"))
151 return (PAM_SUCCESS);
156 pam_sm_close_session(pam_handle_t *pamh, int flags __unused,
157 int argc __unused, const char *argv[] __unused)
163 pam_err = pam_get_data(pamh, PAM_UTMPX_ID, (const void **)&id);
164 if (pam_err != PAM_SUCCESS)
167 memset(&utl, 0, sizeof utl);
168 utl.ut_type = DEAD_PROCESS;
169 memcpy(utl.ut_id, id, sizeof utl.ut_id);
170 utl.ut_pid = getpid();
171 gettimeofday(&utl.ut_tv, NULL);
174 return (PAM_SUCCESS);
177 if (openpam_get_option(pamh, "no_fail"))
178 return (PAM_SUCCESS);
182 PAM_MODULE_ENTRY("pam_lastlog");