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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30
31 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.9 */
32 /* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */
33
34 #include "stdio.h"
35 #include "errno.h"
36 #include "string.h"
37 #include "stdlib.h"
38
39 #include "lp.h"
40 #include "access.h"
41
42 static char **_loadaccess ( char * );
43
44 /**
45 ** load_userform_access() - LOAD ALLOW/DENY LISTS FOR USER+FORM
46 **/
47
48 int
load_userform_access(char * form,char *** pallow,char *** pdeny)49 load_userform_access(char *form, char ***pallow, char ***pdeny)
50 {
51 return (loadaccess(Lp_A_Forms, form, "", pallow, pdeny));
52 }
53
54 /**
55 ** load_userprinter_access() - LOAD ALLOW/DENY LISTS FOR USER+PRINTER
56 **/
57
58 int
load_userprinter_access(char * printer,char *** pallow,char *** pdeny)59 load_userprinter_access(char *printer, char ***pallow, char ***pdeny)
60 {
61 return (loadaccess(Lp_A_Printers, printer, UACCESSPREFIX, pallow,
62 pdeny));
63 }
64
65 /**
66 ** load_formprinter_access() - LOAD ALLOW/DENY LISTS FOR FORM+PRINTER
67 **/
68
69 int
load_formprinter_access(char * printer,char *** pallow,char *** pdeny)70 load_formprinter_access(char *printer, char ***pallow, char ***pdeny)
71 {
72 return (loadaccess(Lp_A_Printers, printer, FACCESSPREFIX, pallow,
73 pdeny));
74 }
75
76 /**
77 ** load_paperprinter_access() - LOAD ALLOW/DENY LISTS FOR FORM+PRINTER
78 **/
79
80 int
load_paperprinter_access(char * printer,char *** pallow,char *** pdeny)81 load_paperprinter_access(char *printer, char ***pallow, char ***pdeny)
82 {
83 return (loadaccess(Lp_A_Printers, printer, PACCESSPREFIX, pallow,
84 pdeny));
85 }
86
87 /**
88 ** loadaccess() - LOAD ALLOW OR DENY LISTS
89 **/
90
91 int
loadaccess(char * dir,char * name,char * prefix,char *** pallow,char *** pdeny)92 loadaccess(char *dir, char *name, char *prefix, char ***pallow, char ***pdeny)
93 {
94 register char *allow_file = 0,
95 *deny_file = 0;
96
97 int ret;
98
99 if (
100 !(allow_file = getaccessfile(dir, name, prefix, ALLOWFILE))
101 || !(*pallow = _loadaccess(allow_file)) && errno != ENOENT
102 || !(deny_file = getaccessfile(dir, name, prefix, DENYFILE))
103 || !(*pdeny = _loadaccess(deny_file)) && errno != ENOENT
104 )
105 ret = -1;
106 else
107 ret = 0;
108
109 if (allow_file)
110 Free (allow_file);
111 if (deny_file)
112 Free (deny_file);
113
114 return (ret);
115 }
116
117 /**
118 ** _loadaccess() - LOAD ALLOW OR DENY FILE
119 **/
120
121 static char **
_loadaccess(char * file)122 _loadaccess(char *file)
123 {
124 register size_t nalloc,
125 nlist;
126
127 register char **list;
128
129 int fd;
130
131 char buf[BUFSIZ];
132
133
134 if ((fd = open_locked(file, "r", 0)) < 0)
135 return (0);
136
137 /*
138 * Preallocate space for the initial list. We'll always
139 * allocate one more than the list size, for the terminating null.
140 */
141 nalloc = ACC_MAX_GUESS;
142 list = (char **)Malloc((nalloc + 1) * sizeof(char *));
143 if (!list) {
144 close(fd);
145 errno = ENOMEM;
146 return (0);
147 }
148
149 errno = 0;
150 for (nlist = 0; fdgets(buf, BUFSIZ, fd); ) {
151
152 buf[strlen(buf) - 1] = 0;
153
154 /*
155 * Allocate more space if needed.
156 */
157 if (nlist >= nalloc) {
158 nalloc += ACC_MAX_GUESS;
159 list = (char **)Realloc(
160 (char *)list,
161 (nalloc + 1) * sizeof(char *)
162 );
163 if (!list) {
164 close(fd);
165 return (0);
166 }
167 }
168
169 list[nlist] = Strdup(buf); /* if fail, minor problem */
170 list[++nlist] = 0;
171
172 }
173 if (errno != 0) {
174 int save_errno = errno;
175
176 close(fd);
177 freelist (list);
178 errno = save_errno;
179 return (0);
180 }
181 close(fd);
182
183 /*
184 * If we have more space allocated than we need,
185 * return the extra.
186 */
187 if (nlist != nalloc) {
188 list = (char **)Realloc(
189 (char *)list,
190 (nlist + 1) * sizeof(char *)
191 );
192 if (!list) {
193 errno = ENOMEM;
194 return (0);
195 }
196 }
197 list[nlist] = 0;
198
199 return (list);
200 }
201