1 /*- 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 5 * All rights reserved. 6 * Copyright (c) 2001 Networks Associates Technology, Inc. 7 * All rights reserved. 8 * Copyright (c) 2004 Joe R. Doupnik 9 * All rights reserved. 10 * 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. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 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 26 * permission. 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. 30 * 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 41 * SUCH DAMAGE. 42 */ 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #define _BSD_SOURCE 48 49 #include <pwd.h> 50 #include <time.h> 51 #include <ulog.h> 52 #include <utmpx.h> 53 54 #define PAM_SM_SESSION 55 56 #include <security/pam_appl.h> 57 #include <security/pam_modules.h> 58 #include <security/pam_mod_misc.h> 59 60 PAM_EXTERN int 61 pam_sm_open_session(pam_handle_t *pamh, int flags, 62 int argc __unused, const char *argv[] __unused) 63 { 64 struct passwd *pwd; 65 struct utmpx *utx; 66 time_t t; 67 const char *user; 68 const void *rhost, *tty; 69 int pam_err; 70 71 pam_err = pam_get_user(pamh, &user, NULL); 72 if (pam_err != PAM_SUCCESS) 73 return (pam_err); 74 if (user == NULL || (pwd = getpwnam(user)) == NULL) 75 return (PAM_SERVICE_ERR); 76 PAM_LOG("Got user: %s", user); 77 78 pam_err = pam_get_item(pamh, PAM_RHOST, &rhost); 79 if (pam_err != PAM_SUCCESS) { 80 PAM_LOG("No PAM_RHOST"); 81 goto err; 82 } 83 pam_err = pam_get_item(pamh, PAM_TTY, &tty); 84 if (pam_err != PAM_SUCCESS) { 85 PAM_LOG("No PAM_TTY"); 86 goto err; 87 } 88 if (tty == NULL) { 89 PAM_LOG("No PAM_TTY"); 90 pam_err = PAM_SERVICE_ERR; 91 goto err; 92 } 93 94 if ((flags & PAM_SILENT) == 0) { 95 if (setutxdb(UTXDB_LASTLOGIN, NULL) != 0) { 96 PAM_LOG("Failed to open lastlogin database"); 97 } else { 98 utx = getutxuser(user); 99 if (utx != NULL && utx->ut_type == USER_PROCESS) { 100 t = utx->ut_tv.tv_sec; 101 if (*utx->ut_host != '\0') 102 pam_info(pamh, "Last login: %.*s from %s", 103 24 - 5, ctime(&t), utx->ut_host); 104 else 105 pam_info(pamh, "Last login: %.*s on %s", 106 24 - 5, ctime(&t), utx->ut_line); 107 } 108 endutxent(); 109 } 110 } 111 112 ulog_login(tty, user, rhost); 113 114 return (PAM_SUCCESS); 115 116 err: 117 if (openpam_get_option(pamh, "no_fail")) 118 return (PAM_SUCCESS); 119 return (pam_err); 120 } 121 122 PAM_EXTERN int 123 pam_sm_close_session(pam_handle_t *pamh, int flags __unused, 124 int argc __unused, const char *argv[] __unused) 125 { 126 const void *tty; 127 int pam_err; 128 129 pam_err = pam_get_item(pamh, PAM_TTY, (const void **)&tty); 130 if (pam_err != PAM_SUCCESS) 131 goto err; 132 if (tty == NULL) { 133 PAM_LOG("No PAM_TTY"); 134 pam_err = PAM_SERVICE_ERR; 135 goto err; 136 } 137 ulog_logout(tty); 138 return (PAM_SUCCESS); 139 140 err: 141 if (openpam_get_option(pamh, "no_fail")) 142 return (PAM_SUCCESS); 143 return (pam_err); 144 } 145 146 PAM_MODULE_ENTRY("pam_lastlog"); 147