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
36 RCSID("$Id$");
37
38 #ifdef HAVE_SHADOW_H
39
40 #ifndef _PATH_CHPASS
41 #define _PATH_CHPASS "/usr/bin/passwd"
42 #endif
43
44 static int
change_passwd(const struct passwd * who)45 change_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
63 void
check_shadow(const struct passwd * pw,const struct spwd * sp)64 check_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