1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
22 /* All Rights Reserved */
23
24 /*
25 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
27 */
28
29 #include <sys/types.h>
30 #include <sys/stat.h>
31 #include <stdio.h>
32 #include <string.h>
33 #include <ctype.h>
34 #include <pwd.h>
35 #include <auth_attr.h>
36 #include <auth_list.h>
37
38 #include "cron.h"
39
40 struct stat globstat;
41 #define exists(file) (stat(file, &globstat) == 0)
42 #define ROOT "root"
43
44 int per_errno; /* status info from getuser */
45 static int within(char *, char *);
46
47
48 char *
getuser(uid)49 getuser(uid)
50 uid_t uid;
51 {
52 struct passwd *nptr;
53
54 if ((nptr = getpwuid(uid)) == NULL) {
55 per_errno = 1;
56 return (NULL);
57 }
58 if ((strcmp(nptr->pw_shell, SHELL) != 0) &&
59 (strcmp(nptr->pw_shell, "") != 0)) {
60 per_errno = 2;
61 /*
62 * return NULL if you want crontab and at to abort
63 * when the users login shell is not /usr/bin/sh otherwise
64 * return pw_name
65 */
66 return (nptr->pw_name);
67 }
68 return (nptr->pw_name);
69 }
70
71 int
allowed(user,allow,deny)72 allowed(user, allow, deny)
73 char *user, *allow, *deny;
74 {
75 if (exists(allow)) {
76 if (within(user, allow)) {
77 return (1);
78 } else {
79 return (0);
80 }
81 } else if (exists(deny)) {
82 if (within(user, deny)) {
83 return (0);
84 } else {
85 return (1);
86 }
87 } else if (chkauthattr(CRONUSER_AUTH, user)) {
88 return (1);
89 } else {
90 return (0);
91 }
92 }
93
94 static int
within(username,filename)95 within(username, filename)
96 char *username, *filename;
97 {
98 char line[UNAMESIZE];
99 FILE *cap;
100 int i;
101
102 if ((cap = fopen(filename, "r")) == NULL)
103 return (0);
104 while (fgets(line, UNAMESIZE, cap) != NULL) {
105 for (i = 0; line[i] != '\0'; i++) {
106 if (isspace(line[i])) {
107 line[i] = '\0';
108 break; }
109 }
110 if (strcmp(line, username) == 0) {
111 fclose(cap);
112 return (1);
113 }
114 }
115 fclose(cap);
116 return (0);
117 }
118
119 int
cron_admin(const char * name)120 cron_admin(const char *name)
121 {
122 return (chkauthattr(CRONADMIN_AUTH, name));
123 }
124