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
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <pwd.h>
#include <auth_attr.h>
#include <auth_list.h>
#include "cron.h"
struct stat globstat;
#define exists(file) (stat(file, &globstat) == 0)
#define ROOT "root"
int per_errno; /* status info from getuser */
static int within(char *, char *);
char *
getuser(uid_t uid)
{
struct passwd *nptr;
if ((nptr = getpwuid(uid)) == NULL) {
per_errno = 1;
return (NULL);
}
if ((strcmp(nptr->pw_shell, SHELL) != 0) &&
(strcmp(nptr->pw_shell, "") != 0)) {
per_errno = 2;
/*
* return NULL if you want crontab and at to abort
* when the users login shell is not /usr/bin/sh otherwise
* return pw_name
*/
return (nptr->pw_name);
}
return (nptr->pw_name);
}
int
allowed(char *user, char *allow, char *deny)
{
if (exists(allow)) {
if (within(user, allow)) {
return (1);
} else {
return (0);
}
} else if (exists(deny)) {
if (within(user, deny)) {
return (0);
} else {
return (1);
}
} else if (chkauthattr(CRONUSER_AUTH, user)) {
return (1);
} else {
return (0);
}
}
static int
within(char *username, char *filename)
{
char line[UNAMESIZE];
FILE *cap;
int i;
if ((cap = fopen(filename, "r")) == NULL)
return (0);
while (fgets(line, UNAMESIZE, cap) != NULL) {
for (i = 0; line[i] != '\0'; i++) {
if (isspace(line[i])) {
line[i] = '\0';
break; }
}
if (strcmp(line, username) == 0) {
fclose(cap);
return (1);
}
}
fclose(cap);
return (0);
}
int
cron_admin(const char *name)
{
return (chkauthattr(CRONADMIN_AUTH, name));
}
|