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 /* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */
31
32 #include "stdio.h"
33 #include "errno.h"
34 #include "string.h"
35 #include "stdlib.h"
36
37 #include "lp.h"
38 #include "access.h"
39
40 static char **_loadaccess ( char * );
41
42 /**
43 ** load_userform_access() - LOAD ALLOW/DENY LISTS FOR USER+FORM
44 **/
45
46 int
load_userform_access(char * form,char *** pallow,char *** pdeny)47 load_userform_access(char *form, char ***pallow, char ***pdeny)
48 {
49 return (loadaccess(Lp_A_Forms, form, "", pallow, pdeny));
50 }
51
52 /**
53 ** load_userprinter_access() - LOAD ALLOW/DENY LISTS FOR USER+PRINTER
54 **/
55
56 int
load_userprinter_access(char * printer,char *** pallow,char *** pdeny)57 load_userprinter_access(char *printer, char ***pallow, char ***pdeny)
58 {
59 return (loadaccess(Lp_A_Printers, printer, UACCESSPREFIX, pallow,
60 pdeny));
61 }
62
63 /**
64 ** load_formprinter_access() - LOAD ALLOW/DENY LISTS FOR FORM+PRINTER
65 **/
66
67 int
load_formprinter_access(char * printer,char *** pallow,char *** pdeny)68 load_formprinter_access(char *printer, char ***pallow, char ***pdeny)
69 {
70 return (loadaccess(Lp_A_Printers, printer, FACCESSPREFIX, pallow,
71 pdeny));
72 }
73
74 /**
75 ** load_paperprinter_access() - LOAD ALLOW/DENY LISTS FOR FORM+PRINTER
76 **/
77
78 int
load_paperprinter_access(char * printer,char *** pallow,char *** pdeny)79 load_paperprinter_access(char *printer, char ***pallow, char ***pdeny)
80 {
81 return (loadaccess(Lp_A_Printers, printer, PACCESSPREFIX, pallow,
82 pdeny));
83 }
84
85 /**
86 ** loadaccess() - LOAD ALLOW OR DENY LISTS
87 **/
88
89 int
loadaccess(char * dir,char * name,char * prefix,char *** pallow,char *** pdeny)90 loadaccess(char *dir, char *name, char *prefix, char ***pallow, char ***pdeny)
91 {
92 register char *allow_file = 0,
93 *deny_file = 0;
94
95 int ret;
96
97 if (
98 !(allow_file = getaccessfile(dir, name, prefix, ALLOWFILE))
99 || !(*pallow = _loadaccess(allow_file)) && errno != ENOENT
100 || !(deny_file = getaccessfile(dir, name, prefix, DENYFILE))
101 || !(*pdeny = _loadaccess(deny_file)) && errno != ENOENT
102 )
103 ret = -1;
104 else
105 ret = 0;
106
107 if (allow_file)
108 Free (allow_file);
109 if (deny_file)
110 Free (deny_file);
111
112 return (ret);
113 }
114
115 /**
116 ** _loadaccess() - LOAD ALLOW OR DENY FILE
117 **/
118
119 static char **
_loadaccess(char * file)120 _loadaccess(char *file)
121 {
122 register size_t nalloc,
123 nlist;
124
125 register char **list;
126
127 int fd;
128
129 char buf[BUFSIZ];
130
131
132 if ((fd = open_locked(file, "r", 0)) < 0)
133 return (0);
134
135 /*
136 * Preallocate space for the initial list. We'll always
137 * allocate one more than the list size, for the terminating null.
138 */
139 nalloc = ACC_MAX_GUESS;
140 list = (char **)Malloc((nalloc + 1) * sizeof(char *));
141 if (!list) {
142 close(fd);
143 errno = ENOMEM;
144 return (0);
145 }
146
147 errno = 0;
148 for (nlist = 0; fdgets(buf, BUFSIZ, fd); ) {
149
150 buf[strlen(buf) - 1] = 0;
151
152 /*
153 * Allocate more space if needed.
154 */
155 if (nlist >= nalloc) {
156 nalloc += ACC_MAX_GUESS;
157 list = (char **)Realloc(
158 (char *)list,
159 (nalloc + 1) * sizeof(char *)
160 );
161 if (!list) {
162 close(fd);
163 return (0);
164 }
165 }
166
167 list[nlist] = Strdup(buf); /* if fail, minor problem */
168 list[++nlist] = 0;
169
170 }
171 if (errno != 0) {
172 int save_errno = errno;
173
174 close(fd);
175 freelist (list);
176 errno = save_errno;
177 return (0);
178 }
179 close(fd);
180
181 /*
182 * If we have more space allocated than we need,
183 * return the extra.
184 */
185 if (nlist != nalloc) {
186 list = (char **)Realloc(
187 (char *)list,
188 (nlist + 1) * sizeof(char *)
189 );
190 if (!list) {
191 errno = ENOMEM;
192 return (0);
193 }
194 }
195 list[nlist] = 0;
196
197 return (list);
198 }
199