75f4b049a6
* libmisc/env.c: Added comments. * libmisc/env.c: Avoid implicit conversion of pointer to boolean.
126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 1989 - 1994, Julianne Frances Haugh
|
|
* Copyright (c) 1996 - 1997, Marek Michałkiewicz
|
|
* Copyright (c) 2001 - 2005, Tomasz Kłoczko
|
|
* Copyright (c) 2008 - 2009, Nicolas François
|
|
* 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.
|
|
* 3. The name of the copyright holders or contributors may not be used to
|
|
* endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
|
|
* HOLDERS 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.
|
|
*/
|
|
|
|
/*
|
|
* Extracted from age.c and made part of libshadow.a - may be useful
|
|
* in other shadow-aware programs. --marekm
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include "prototypes.h"
|
|
#include "defines.h"
|
|
#include <pwd.h>
|
|
#include <time.h>
|
|
|
|
#ident "$Id$"
|
|
|
|
|
|
/*
|
|
* isexpired - determine if account is expired yet
|
|
*
|
|
* isexpired calculates the expiration date based on the
|
|
* password expiration criteria.
|
|
*
|
|
* Return value:
|
|
* 0: The password is still valid
|
|
* 1: The password has expired, it must be changed
|
|
* 2: The password has expired since a long time and the account is
|
|
* now disabled. (password cannot be changed)
|
|
* 3: The account has expired
|
|
*/
|
|
int isexpired (const struct passwd *pw, /*@null@*/const struct spwd *sp)
|
|
{
|
|
long now;
|
|
|
|
now = (long) time ((time_t *) 0) / SCALE;
|
|
|
|
if (NULL == sp) {
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Quick and easy - there is an expired account field
|
|
* along with an inactive account field. Do the expired
|
|
* one first since it is worse.
|
|
*/
|
|
|
|
if ((sp->sp_expire > 0) && (now >= sp->sp_expire)) {
|
|
return 3;
|
|
}
|
|
|
|
/*
|
|
* Last changed date 1970-01-01 (not very likely) means that
|
|
* the password must be changed on next login (passwd -e).
|
|
*
|
|
* The check for "x" is a workaround for RedHat NYS libc bug -
|
|
* if /etc/shadow doesn't exist, getspnam() still succeeds and
|
|
* returns sp_lstchg==0 (must change password) instead of -1!
|
|
*/
|
|
if ( (0 == sp->sp_lstchg)
|
|
&& (strcmp (pw->pw_passwd, SHADOW_PASSWD_STRING) == 0)) {
|
|
return 1;
|
|
}
|
|
|
|
if ( (sp->sp_lstchg > 0)
|
|
&& (sp->sp_max >= 0)
|
|
&& (sp->sp_inact >= 0)
|
|
&& (now >= (sp->sp_lstchg + sp->sp_max + sp->sp_inact))) {
|
|
return 2;
|
|
}
|
|
|
|
/*
|
|
* The last and max fields must be present for an account
|
|
* to have an expired password. A maximum of >10000 days
|
|
* is considered to be infinite.
|
|
*/
|
|
|
|
if ( (-1 == sp->sp_lstchg)
|
|
|| (-1 == sp->sp_max)
|
|
|| (sp->sp_max >= ((10000L * DAY) / SCALE))) {
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Calculate today's day and the day on which the password
|
|
* is going to expire. If that date has already passed,
|
|
* the password has expired.
|
|
*/
|
|
|
|
if (now >= (sp->sp_lstchg + sp->sp_max)) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|