2 * Copyright (c) 1989 - 1994, Julianne Frances Haugh
3 * Copyright (c) 1996 - 1997, Marek Michałkiewicz
4 * Copyright (c) 2001 - 2005, Tomasz Kłoczko
5 * Copyright (c) 2008 - 2009, Nicolas François
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the copyright holders or contributors may not be used to
17 * endorse or promote products derived from this software without
18 * specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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34 * Extracted from age.c and made part of libshadow.a - may be useful
35 * in other shadow-aware programs. --marekm
40 #include <sys/types.h>
41 #include "prototypes.h"
46 #ident "$Id: isexpired.c 2777 2009-04-23 17:43:27Z nekral-guest $"
50 * isexpired - determine if account is expired yet
52 * isexpired calculates the expiration date based on the
53 * password expiration criteria.
56 * 0: The password is still valid
57 * 1: The password has expired, it must be changed
58 * 2: The password has expired since a long time and the account is
59 * now disabled. (password cannot be changed)
60 * 3: The account has expired
62 int isexpired (const struct passwd *pw, /*@null@*/const struct spwd *sp)
66 now = (long) time ((time_t *) 0) / SCALE;
73 * Quick and easy - there is an expired account field
74 * along with an inactive account field. Do the expired
75 * one first since it is worse.
78 if ((sp->sp_expire > 0) && (now >= sp->sp_expire)) {
83 * Last changed date 1970-01-01 (not very likely) means that
84 * the password must be changed on next login (passwd -e).
86 * The check for "x" is a workaround for RedHat NYS libc bug -
87 * if /etc/shadow doesn't exist, getspnam() still succeeds and
88 * returns sp_lstchg==0 (must change password) instead of -1!
90 if ( (0 == sp->sp_lstchg)
91 && (strcmp (pw->pw_passwd, SHADOW_PASSWD_STRING) == 0)) {
95 if ( (sp->sp_lstchg > 0)
97 && (sp->sp_inact >= 0)
98 && (now >= (sp->sp_lstchg + sp->sp_max + sp->sp_inact))) {
103 * The last and max fields must be present for an account
104 * to have an expired password. A maximum of >10000 days
105 * is considered to be infinite.
108 if ( (-1 == sp->sp_lstchg)
109 || (-1 == sp->sp_max)
110 || (sp->sp_max >= (10000L * DAY / SCALE))) {
115 * Calculate today's day and the day on which the password
116 * is going to expire. If that date has already passed,
117 * the password has expired.
120 if (now >= (sp->sp_lstchg + sp->sp_max)) {