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/*-
* Copyright 1998 Juniper Networks, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <pwd.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define PAM_SM_AUTH
#include <security/pam_modules.h>
#include "pam_mod_misc.h"
#define PASSWORD_PROMPT "Password:"
PAM_EXTERN int
pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc,
const char **argv)
{
int retval;
const char *user;
const char *password;
struct passwd *pwd;
char *encrypted;
int options;
int i;
options = 0;
for (i = 0; i < argc; i++)
pam_std_option(&options, argv[i]);
if ((retval = pam_get_user(pamh, &user, NULL)) != PAM_SUCCESS)
return retval;
if ((retval = pam_get_pass(pamh, &password, PASSWORD_PROMPT,
options)) != PAM_SUCCESS)
return retval;
if ((pwd = getpwnam(user)) != NULL) {
encrypted = crypt(password, pwd->pw_passwd);
if (password[0] == '\0' && pwd->pw_passwd[0] != '\0')
encrypted = ":";
retval = strcmp(encrypted, pwd->pw_passwd) == 0 ?
PAM_SUCCESS : PAM_AUTH_ERR;
} else {
/*
* User unknown. Encrypt anyway so that it takes the
* same amount of time.
*/
crypt(password, "xx");
retval = PAM_AUTH_ERR;
}
/*
* The PAM infrastructure will obliterate the cleartext
* password before returning to the application.
*/
return retval;
}
PAM_EXTERN int
pam_sm_setcred(pam_handle_t *pamh, int flags, int argc, const char **argv)
{
return PAM_SUCCESS;
}
PAM_MODULE_ENTRY("pam_unix");
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