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 53 #define PAM_SM_SESSION 54 55 #include <security/pam_appl.h> 56 #include <security/pam_modules.h> 57 #include <security/pam_mod_misc.h> 58 59 PAM_EXTERN int 60 pam_sm_open_session(pam_handle_t *pamh, int flags, 61 int argc __unused, const char *argv[] __unused) 62 { 63 struct passwd *pwd; 64 struct ulog_utmpx *utx; 65 time_t t; 66 const char *user; 67 const void *rhost, *tty; 68 int pam_err; 69 70 pam_err = pam_get_user(pamh, &user, NULL); 71 if (pam_err != PAM_SUCCESS) 72 return (pam_err); 73 if (user == NULL || (pwd = getpwnam(user)) == NULL) 74 return (PAM_SERVICE_ERR); 75 PAM_LOG("Got user: %s", user); 76 77 pam_err = pam_get_item(pamh, PAM_RHOST, &rhost); 78 if (pam_err != PAM_SUCCESS) { 79 PAM_LOG("No PAM_RHOST"); 80 goto err; 81 } 82 pam_err = pam_get_item(pamh, PAM_TTY, &tty); 83 if (pam_err != PAM_SUCCESS) { 84 PAM_LOG("No PAM_TTY"); 85 goto err; 86 } 87 if (tty == NULL) { 88 PAM_LOG("No PAM_TTY"); 89 pam_err = PAM_SERVICE_ERR; 90 goto err; 91 } 92 93 if ((flags & PAM_SILENT) == 0) { 94 if (ulog_setutxfile(UTXF_LASTLOG, NULL) != 0) { 95 PAM_LOG("Failed to open lastlog database"); 96 } else { 97 utx = ulog_getutxuser(user); 98 if (utx != NULL && utx->ut_type == USER_PROCESS) { 99 t = utx->ut_tv.tv_sec; 100 if (*utx->ut_host != '\0') 101 pam_info(pamh, "Last login: %.*s from %s", 102 24 - 5, ctime(&t), utx->ut_host); 103 else 104 pam_info(pamh, "Last login: %.*s on %s", 105 24 - 5, ctime(&t), utx->ut_line); 106 } 107 ulog_endutxent(); 108 } 109 } 110 111 ulog_login(tty, user, rhost); 112 113 return (PAM_SUCCESS); 114 115 err: 116 if (openpam_get_option(pamh, "no_fail")) 117 return (PAM_SUCCESS); 118 return (pam_err); 119 } 120 121 PAM_EXTERN int 122 pam_sm_close_session(pam_handle_t *pamh, int flags __unused, 123 int argc __unused, const char *argv[] __unused) 124 { 125 const void *tty; 126 int pam_err; 127 128 pam_err = pam_get_item(pamh, PAM_TTY, (const void **)&tty); 129 if (pam_err != PAM_SUCCESS) 130 goto err; 131 if (tty == NULL) { 132 PAM_LOG("No PAM_TTY"); 133 pam_err = PAM_SERVICE_ERR; 134 goto err; 135 } 136 ulog_logout(tty); 137 return (PAM_SUCCESS); 138 139 err: 140 if (openpam_get_option(pamh, "no_fail")) 141 return (PAM_SUCCESS); 142 return (pam_err); 143 } 144 145 PAM_MODULE_ENTRY("pam_lastlog"); 146