2 * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * acl_from_text: Convert a text-form ACL from a string to an acl_t.
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/types.h>
34 #include "namespace.h"
36 #include "un-namespace.h"
37 #include <sys/errno.h>
42 #include "acl_support.h"
44 static acl_tag_t acl_string_to_tag(char *tag, char *qualifier);
45 static char *string_skip_whitespace(char *string);
46 static void string_trim_trailing_whitespace(char *string);
49 string_skip_whitespace(char *string)
52 while (*string && ((*string == ' ') || (*string == '\t'))) {
59 string_trim_trailing_whitespace(char *string)
66 end = string + strlen(string) - 1;
68 while (end != string) {
69 if ((*end == ' ') || (*end == '\t')) {
81 acl_string_to_tag(char *tag, char *qualifier)
84 if (*qualifier == '\0') {
85 if ((!strcmp(tag, "user")) || (!strcmp(tag, "u"))) {
86 return (ACL_USER_OBJ);
88 if ((!strcmp(tag, "group")) || (!strcmp(tag, "g"))) {
89 return (ACL_GROUP_OBJ);
91 if ((!strcmp(tag, "mask")) || (!strcmp(tag, "m"))) {
94 if ((!strcmp(tag, "other")) || (!strcmp(tag, "o"))) {
99 if ((!strcmp(tag, "user")) || (!strcmp(tag, "u"))) {
102 if ((!strcmp(tag, "group")) || (!strcmp(tag, "g"))) {
110 * acl_from_text -- Convert a string into an ACL.
111 * Postpone most validity checking until the end and call acl_valid() to do
115 acl_from_text(const char *buf_p)
120 char *mybuf_p, *line, *cur, *notcomment, *comment, *entry;
121 char *tag, *qualifier, *permission;
125 /* Local copy we can mess up. */
126 mybuf_p = strdup(buf_p);
136 /* Outer loop: delimit at \n boundaries. */
138 while ((line = strsep(&cur, "\n"))) {
139 /* Now split the line on the first # to strip out comments. */
141 notcomment = strsep(&comment, "#");
143 /* Inner loop: delimit at ',' boundaries. */
144 while ((entry = strsep(¬comment, ","))) {
145 /* Now split into three ':' delimited fields. */
146 tag = strsep(&entry, ":");
151 tag = string_skip_whitespace(tag);
152 if ((*tag == '\0') && (!entry)) {
154 * Is an entirely comment line, skip to next
159 string_trim_trailing_whitespace(tag);
161 qualifier = strsep(&entry, ":");
162 if (qualifier == NULL) {
166 qualifier = string_skip_whitespace(qualifier);
167 string_trim_trailing_whitespace(qualifier);
169 permission = strsep(&entry, ":");
170 if (permission == NULL || entry) {
174 permission = string_skip_whitespace(permission);
175 string_trim_trailing_whitespace(permission);
177 t = acl_string_to_tag(tag, qualifier);
183 error = _posix1e_acl_string_to_perm(permission, &p);
194 if (*qualifier != '\0') {
203 error = _posix1e_acl_name_to_id(t, qualifier,
214 error = _posix1e_acl_add_entry(acl, t, id, p);
221 /* XXX Should we only return ACLs valid according to acl_valid? */
222 /* Verify validity of the ACL we read in. */
223 if (acl_valid(acl) == -1) {