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 #pragma ident "%Z%%M% %I% %E% SMI"
26
27 /*
28 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
29 * Use is subject to license terms.
30 */
31
32 /* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */
33
34 #include "string.h"
35 #include "unistd.h"
36
37 #include "lp.h"
38 #include "access.h"
39 #include <pwd.h>
40 #include <auth_attr.h>
41 #include <auth_list.h>
42 #include <tsol/label.h>
43
44 /**
45 ** is_user_admin() - CHECK IF CURRENT USER IS AN ADMINISTRATOR
46 **/
47
48 int
49 #if defined(__STDC__)
is_user_admin(void)50 is_user_admin (
51 void
52 )
53 #else
54 is_user_admin ()
55 #endif
56 {
57 /* For a labeled system, tsol_check_admin_auth is called
58 * instead of using Access.
59 */
60 if (is_system_labeled()) {
61 /* Check that user has print admin authorization */
62 return (tsol_check_admin_auth(getuid()));
63 } else {
64 return (Access(Lp_A, W_OK) == -1? 0 : 1);
65 }
66 }
67
68 /**
69 ** is_user_allowed() - CHECK USER ACCESS ACCORDING TO ALLOW/DENY LISTS
70 **/
71
72 int
73 #if defined(__STDC__)
is_user_allowed(char * user,char ** allow,char ** deny)74 is_user_allowed (
75 char * user,
76 char ** allow,
77 char ** deny
78 )
79 #else
80 is_user_allowed (user, allow, deny)
81 char *user,
82 **allow,
83 **deny;
84 #endif
85 {
86 if (bangequ(user, LOCAL_LPUSER) || bangequ(user, LOCAL_ROOTUSER))
87 return (1);
88
89 return (allowed(user, allow, deny));
90 }
91
92 /**
93 ** is_user_allowed_form() - CHECK USER ACCESS TO FORM
94 **/
95
96 int
97 #if defined(__STDC__)
is_user_allowed_form(char * user,char * form)98 is_user_allowed_form (
99 char * user,
100 char * form
101 )
102 #else
103 is_user_allowed_form (user, form)
104 char *user,
105 *form;
106 #endif
107 {
108 char **allow,
109 **deny;
110
111 if (loadaccess(Lp_A_Forms, form, "", &allow, &deny) == -1)
112 return (-1);
113
114 return (is_user_allowed(user, allow, deny));
115 }
116
117 /**
118 ** is_user_allowed_printer() - CHECK USER ACCESS TO PRINTER
119 **/
120
121 int
122 #if defined(__STDC__)
is_user_allowed_printer(char * user,char * printer)123 is_user_allowed_printer (
124 char * user,
125 char * printer
126 )
127 #else
128 is_user_allowed_printer (user, printer)
129 char *user,
130 *printer;
131 #endif
132 {
133 char **allow,
134 **deny;
135
136 if (loadaccess(Lp_A_Printers, printer, UACCESSPREFIX, &allow, &deny) == -1)
137 return (-1);
138
139 return (is_user_allowed(user, allow, deny));
140 }
141
142 /**
143 ** is_form_allowed_printer() - CHECK FORM USE ON PRINTER
144 **/
145
146 int
147 #if defined(__STDC__)
is_form_allowed_printer(char * form,char * printer)148 is_form_allowed_printer (
149 char * form,
150 char * printer
151 )
152 #else
153 is_form_allowed_printer (form, printer)
154 char *form,
155 *printer;
156 #endif
157 {
158 char **allow,
159 **deny;
160
161 if (loadaccess(Lp_A_Printers, printer, FACCESSPREFIX, &allow, &deny) == -1)
162 return (-1);
163
164 return (allowed(form, allow, deny));
165 }
166
167 /**
168 ** allowed() - GENERAL ROUTINE TO CHECK ALLOW/DENY LISTS
169 **/
170
171 int
172 #if defined(__STDC__)
allowed(char * item,char ** allow,char ** deny)173 allowed (
174 char * item,
175 char ** allow,
176 char ** deny
177 )
178 #else
179 allowed (item, allow, deny)
180 char *item,
181 **allow,
182 **deny;
183 #endif
184 {
185 if (allow) {
186 if (bang_searchlist(item, allow))
187 return (1);
188 else
189 return (0);
190 }
191
192 if (deny) {
193 if (bang_searchlist(item, deny))
194 return (0);
195 else
196 return (1);
197 }
198
199 return (0);
200 }
201
202 /*
203 * Check to see if the specified user has the administer the printing
204 * system authorization.
205 */
206 int
tsol_check_admin_auth(uid_t uid)207 tsol_check_admin_auth(uid_t uid)
208 {
209 struct passwd *p;
210 char *name;
211
212 p = getpwuid(uid);
213 if (p != NULL && p->pw_name != NULL)
214 name = p->pw_name;
215 else
216 name = "";
217
218 return (chkauthattr(PRINT_ADMIN_AUTH, name));
219 }
220