1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* SPDX-FileCopyrightText: 1994 , Julianne Frances Haugh
* SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
* SPDX-FileCopyrightText: 2001 - 2006, Tomasz Kłoczko
* SPDX-FileCopyrightText: 2007 - 2011, Nicolas François
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <config.h>
#ident "$Id$"
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <sys/types.h>
#include <getopt.h>
#include "attr.h"
#include "defines.h"
#include "prototypes.h"
/*@-exitarg@*/
#include "exitcodes.h"
#include "shadowlog.h"
/* Global variables */
static const char Prog[] = "expiry";
static bool cflg = false;
/* local function prototypes */
static void catch_signals (MAYBE_UNUSED int sig);
NORETURN static void usage (int status);
static void process_flags (int argc, char **argv);
/*
* catch_signals - signal catcher
*/
static void catch_signals (MAYBE_UNUSED int sig)
{
_exit (10);
}
/*
* usage - print syntax message and exit
*/
NORETURN
static void
usage (int status)
{
FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
(void) fprintf (usageout,
_("Usage: %s [options]\n"
"\n"
"Options:\n"),
Prog);
(void) fputs (_(" -c, --check check the user's password expiration\n"), usageout);
(void) fputs (_(" -f, --force force password change if the user's password\n"
" is expired\n"), usageout);
(void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
(void) fputs ("\n", usageout);
exit (status);
}
/*
* process_flags - parse the command line options
*
* It will not return if an error is encountered.
*/
static void process_flags (int argc, char **argv)
{
bool fflg = false;
int c;
static struct option long_options[] = {
{"check", no_argument, NULL, 'c'},
{"force", no_argument, NULL, 'f'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, '\0'}
};
while ((c = getopt_long (argc, argv, "cfh",
long_options, NULL)) != -1) {
switch (c) {
case 'c':
cflg = true;
break;
case 'f':
fflg = true;
break;
case 'h':
usage (E_SUCCESS);
/*@notreached@*/break;
default:
usage (E_USAGE);
}
}
if (! (cflg || fflg)) {
usage (E_USAGE);
}
if (cflg && fflg) {
fprintf (stderr,
_("%s: options %s and %s conflict\n"),
Prog, "-c", "-f");
usage (E_USAGE);
}
if (argc != optind) {
fprintf (stderr,
_("%s: unexpected argument: %s\n"),
Prog, argv[optind]);
usage (E_USAGE);
}
}
/*
* expiry - check and enforce password expiration policy
*
* expiry checks (-c) the current password expiration and forces (-f)
* changes when required. It is callable as a normal user command.
*/
int main (int argc, char **argv)
{
struct passwd *pwd;
struct spwd *spwd;
sanitize_env ();
check_fds ();
log_set_progname(Prog);
log_set_logfd(stderr);
/*
* Start by disabling all of the keyboard signals.
*/
(void) signal (SIGHUP, catch_signals);
(void) signal (SIGINT, catch_signals);
(void) signal (SIGQUIT, catch_signals);
(void) signal (SIGTSTP, catch_signals);
/*
* expiry takes one of two arguments. The default action is to give
* the usage message.
*/
(void) setlocale (LC_ALL, "");
(void) bindtextdomain (PACKAGE, LOCALEDIR);
(void) textdomain (PACKAGE);
OPENLOG (Prog);
process_flags (argc, argv);
/*
* Get user entries for /etc/passwd and /etc/shadow
*/
pwd = get_my_pwent ();
if (NULL == pwd) {
fprintf (stderr, _("%s: Cannot determine your user name.\n"),
Prog);
SYSLOG ((LOG_WARN, "Cannot determine the user name of the caller (UID %lu)",
(unsigned long) getuid ()));
exit (10);
}
spwd = getspnam (pwd->pw_name); /* !USE_PAM, No need for xgetspnam */
/*
* If checking accounts, use agecheck() function.
*/
if (cflg) {
/*
* Print out number of days until expiration.
*/
agecheck (spwd);
/*
* Exit with status indicating state of account.
*/
exit (isexpired (pwd, spwd));
}
/*
* Otherwise, force a password change with the expire() function.
* It will force the change or give a message indicating what to
* do.
* It won't return unless the account is unexpired.
*/
(void) expire (pwd, spwd);
return E_SUCCESS;
}
|
