2 * Copyright (c) 1989 - 1994, Julianne Frances Haugh
3 * Copyright (c) 1996 - 1997, Marek Michałkiewicz
4 * Copyright (c) 2001 - 2005, Tomasz Kłoczko
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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13 * notice, this list of conditions and the following disclaimer in the
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15 * 3. The name of the copyright holders or contributors may not be used to
16 * endorse or promote products derived from this software without
17 * specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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33 * Extracted from age.c and made part of libshadow.a - may be useful
34 * in other shadow-aware programs. --marekm
39 #include <sys/types.h>
40 #include "prototypes.h"
49 * isexpired - determine if account is expired yet
51 * isexpired calculates the expiration date based on the
52 * password expiration criteria.
54 /*ARGSUSED*/ int isexpired (const struct passwd *pw, const struct spwd *sp)
58 now = time ((time_t *) 0) / SCALE;
61 sp = pwd_to_spwd (pw);
64 * Quick and easy - there is an expired account field
65 * along with an inactive account field. Do the expired
66 * one first since it is worse.
69 if (sp->sp_expire > 0 && now >= sp->sp_expire)
73 * Last changed date 1970-01-01 (not very likely) means that
74 * the password must be changed on next login (passwd -e).
76 * The check for "x" is a workaround for RedHat NYS libc bug -
77 * if /etc/shadow doesn't exist, getspnam() still succeeds and
78 * returns sp_lstchg==0 (must change password) instead of -1!
80 if (sp->sp_lstchg == 0 && !strcmp (pw->pw_passwd, SHADOW_PASSWD_STRING))
83 if (sp->sp_lstchg > 0 && sp->sp_max >= 0 && sp->sp_inact >= 0 &&
84 now >= sp->sp_lstchg + sp->sp_max + sp->sp_inact)
88 * The last and max fields must be present for an account
89 * to have an expired password. A maximum of >10000 days
90 * is considered to be infinite.
93 if (sp->sp_lstchg == -1 ||
94 sp->sp_max == -1 || sp->sp_max >= (10000L * DAY / SCALE))
98 * Calculate today's day and the day on which the password
99 * is going to expire. If that date has already passed,
100 * the password has expired.
103 if (now >= sp->sp_lstchg + sp->sp_max)