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
|
/*
* Copyright (c) 1991 - 1993, Julianne Frances Haugh
* Copyright (c) 1991 - 1993, Chip Rosenthal
* Copyright (c) 1996 - 2000, Marek Michałkiewicz
* Copyright (c) 2003 - 2005, Tomasz Kłoczko
* Copyright (c) 2008 - 2010, Nicolas François
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the copyright holders or contributors may not be used to
* endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#ident "$Id$"
#include <sys/types.h>
#include <stdio.h>
#include <pwd.h>
#include "defines.h"
#include "prototypes.h"
#include "getdef.h"
/*
* hushed - determine if a user receives login messages
*
* Look in the hushed-logins file (or user's home directory) to see
* if the user is to receive the login-time messages.
*/
bool hushed (const char *username)
{
struct passwd *pw;
const char *hushfile;
char buf[BUFSIZ];
bool found;
FILE *fp;
/*
* Get the name of the file to use. If this option is not
* defined, default to a noisy login.
*/
hushfile = getdef_str ("HUSHLOGIN_FILE");
if (NULL == hushfile) {
return false;
}
pw = getpwnam (username);
if (NULL == pw) {
return false;
}
/*
* If this is not a fully rooted path then see if the
* file exists in the user's home directory.
*/
if (hushfile[0] != '/') {
(void) snprintf (buf, sizeof (buf), "%s/%s", pw->pw_dir, hushfile);
return (access (buf, F_OK) == 0);
}
/*
* If this is a fully rooted path then go through the file
* and see if this user, or its shell is in there.
*/
fp = fopen (hushfile, "r");
if (NULL == fp) {
return false;
}
for (found = false; !found && (fgets (buf, (int) sizeof buf, fp) == buf);) {
buf[strlen (buf) - 1] = '\0';
found = (strcmp (buf, pw->pw_shell) == 0) ||
(strcmp (buf, pw->pw_name) == 0);
}
(void) fclose (fp);
return found;
}
|
