lib/libpam/modules/pam_rootok/pam_rootok.c

   1 /*-
   2  * Copyright (c) 2001 Mark R V Murray
   3  * All rights reserved.
   4  * Copyright (c) 2001 Networks Associates Technology, Inc.
   5  * All rights reserved.
   6  *
   7  * Portions of this software were developed for the FreeBSD Project by
   8  * ThinkSec AS and NAI Labs, the Security Research Division of Network
   9  * Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
  10  * ("CBOSS"), as part of the DARPA CHATS research program.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. The name of the author may not be used to endorse or promote
  21  *    products derived from this software without specific prior written
  22  *    permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * $FreeBSD: src/lib/libpam/modules/pam_rootok/pam_rootok.c,v 1.8 2002/04/12 22:27:23 des Exp $
  37  */
  38
  39 #define _BSD_SOURCE
  40
  41 #include <unistd.h>
  42 #include <syslog.h>
  43
  44 #define PAM_SM_AUTH
  45
  46 #include <security/pam_appl.h>
  47 #include <security/pam_modules.h>
  48 #include <security/pam_mod_misc.h>
  49
  50 PAM_EXTERN int
  51 pam_sm_authenticate(pam_handle_t *pamh, int flags __unused,
  52                     int argc __unused, const char *argv[] __unused)
  53 {
  54
  55         if (getuid() == 0)
  56                 return (PAM_SUCCESS);
  57
  58         PAM_VERBOSE_ERROR("Refused; not superuser");
  59         PAM_LOG("User is not superuser");
  60
  61         return (PAM_AUTH_ERR);
  62 }
  63
  64 PAM_EXTERN int
  65 pam_sm_setcred(pam_handle_t *pamh __unused, int flags __unused,
  66                int argc __unused, const char *argv[] __unused)
  67 {
  68
  69         return (PAM_SUCCESS);
  70 }
  71
  72 PAM_MODULE_ENTRY("pam_rootok");