1/* $NetBSD: pam_login_access.c,v 1.3 2006/11/03 18:03:23 christos Exp $ */ 2 3/*- 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 * 9 * Portions of this software were developed for the FreeBSD Project by 10 * ThinkSec AS and NAI Labs, the Security Research Division of Network 11 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 12 * ("CBOSS"), as part of the DARPA CHATS research program. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. The name of the author may not be used to endorse or promote 23 * products derived from this software without specific prior written 24 * permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39#include <sys/cdefs.h> 40#ifdef __FreeBSD__ 41__FBSDID("$FreeBSD: src/lib/libpam/modules/pam_login_access/pam_login_access.c,v 1.11 2004/02/10 10:13:21 des Exp $"); 42#else 43__RCSID("$NetBSD: pam_login_access.c,v 1.3 2006/11/03 18:03:23 christos Exp $"); 44#endif 45 46#define _BSD_SOURCE 47 48#include <sys/param.h> 49 50#include <unistd.h> 51 52#define PAM_SM_ACCOUNT 53 54#include <security/pam_appl.h> 55#include <security/pam_modules.h> 56#include <security/pam_mod_misc.h> 57 58#include "pam_login_access.h" 59 60PAM_EXTERN int 61pam_sm_acct_mgmt(pam_handle_t *pamh, int flags __unused, 62 int argc __unused, const char *argv[] __unused) 63{ 64 const void *rhost, *tty, *user; 65 char hostname[MAXHOSTNAMELEN]; 66 int pam_err; 67 68 pam_err = pam_get_item(pamh, PAM_USER, &user); 69 if (pam_err != PAM_SUCCESS) 70 return (pam_err); 71 72 if (user == NULL) 73 return (PAM_SERVICE_ERR); 74 75 PAM_LOG("Got user: %s", (const char *)user); 76 77 pam_err = pam_get_item(pamh, PAM_RHOST, &rhost); 78 if (pam_err != PAM_SUCCESS) 79 return (pam_err); 80 81 pam_err = pam_get_item(pamh, PAM_TTY, &tty); 82 if (pam_err != PAM_SUCCESS) 83 return (pam_err); 84 85 gethostname(hostname, sizeof hostname); 86 87 if (rhost == NULL || *(const char *)rhost == '\0') { 88 PAM_LOG("Checking login.access for user %s on tty %s", 89 (const char *)user, (const char *)tty); 90 if (login_access(user, tty) != 0) 91 return (PAM_SUCCESS); 92 PAM_VERBOSE_ERROR("%s is not allowed to log in on %s", 93 (const char *)user, (const char *)tty); 94 } else { 95 PAM_LOG("Checking login.access for user %s from host %s", 96 (const char *)user, (const char *)rhost); 97 if (login_access(user, rhost) != 0) 98 return (PAM_SUCCESS); 99 PAM_VERBOSE_ERROR("%s is not allowed to log in from %s", 100 (const char *)user, (const char *)rhost); 101 } 102 103 return (PAM_AUTH_ERR); 104} 105 106PAM_MODULE_ENTRY("pam_login_access"); 107