1/*
2 * Copyright (c) 1997, 1998, 1999 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
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 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "login_locl.h"
35
36RCSID("$Id$");
37
38#ifdef HAVE_SHADOW_H
39
40#ifndef _PATH_CHPASS
41#define _PATH_CHPASS "/usr/bin/passwd"
42#endif
43
44static int
45change_passwd(const struct passwd *who)
46{
47    int status;
48    pid_t pid;
49
50    switch (pid = fork()) {
51    case -1:
52        printf("fork /bin/passwd");
53        exit(1);
54    case 0:
55        execlp(_PATH_CHPASS, "passwd", who->pw_name, (char *) 0);
56        exit(1);
57    default:
58        waitpid(pid, &status, 0);
59        return (status);
60    }
61}
62
63void
64check_shadow(const struct passwd *pw, const struct spwd *sp)
65{
66  long today;
67
68  today = time(0)/(24L * 60 * 60);
69
70  if (sp == NULL)
71      return;
72
73  if (sp->sp_expire > 0) {
74        if (today >= sp->sp_expire) {
75            printf("Your account has expired.\n");
76            sleep(1);
77            exit(0);
78        } else if (sp->sp_expire - today < 14) {
79            printf("Your account will expire in %d days.\n",
80                   (int)(sp->sp_expire - today));
81        }
82  }
83
84  if (sp->sp_max > 0) {
85        if (today >= (sp->sp_lstchg + sp->sp_max)) {
86            printf("Your password has expired. Choose a new one.\n");
87            change_passwd(pw);
88        } else if (sp->sp_warn > 0
89            && (today > (sp->sp_lstchg + sp->sp_max - sp->sp_warn))) {
90            printf("Your password will expire in %d days.\n",
91                   (int)(sp->sp_lstchg + sp->sp_max - today));
92        }
93  }
94}
95#endif /* HAVE_SHADOW_H */
96