2 * Copyright (c) 1999 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
26 *$FreeBSD: src/lib/libposix1e/acl_from_text.c,v 1.1 2000/01/15 19:44:24 rwatson Exp $
27 *$DragonFly: src/lib/libposix1e/acl_from_text.c,v 1.3 2005/08/04 17:27:09 drhodus Exp $
30 * acl_from_text: convert a text-form ACL from a string to an acl_t
33 #include <sys/types.h>
35 #include <sys/errno.h>
40 #include "acl_support.h"
43 PM_BASE, /* initial, begin line, or after , */
44 PM_QUALIFIER, /* in qualifier field */
45 PM_PERM, /* in permission field */
46 PM_COMMENT, /* in comment */
50 string_skip_whitespace(char *string)
53 while (*string && ((*string == ' ') || (*string == '\t'))) {
60 string_trim_trailing_whitespace(char *string)
67 end = string + strlen(string) - 1;
69 while (end != string) {
70 if ((*end == ' ') || (*end == '\t')) {
82 acl_string_to_tag(char *tag, char *qualifier)
85 if (*qualifier == '\0') {
86 if ((!strcmp(tag, "user")) || (!strcmp(tag, "u"))) {
87 return (ACL_USER_OBJ);
89 if ((!strcmp(tag, "group")) || (!strcmp(tag, "g"))) {
90 return (ACL_GROUP_OBJ);
92 if ((!strcmp(tag, "mask")) || (!strcmp(tag, "m"))) {
95 if ((!strcmp(tag, "other")) || (!strcmp(tag, "o"))) {
100 if ((!strcmp(tag, "user")) || (!strcmp(tag, "u"))) {
103 if ((!strcmp(tag, "group")) || (!strcmp(tag, "g"))) {
111 * acl_from_text -- convert a string into an ACL
112 * postpone most validity checking until the end and cal acl_valid to do
116 acl_from_text(const char *buf_p)
122 char *mybuf_p, *line, *cur, *notcomment, *comment, *entry;
123 char *tag, *qualifier, *permission;
126 /* local copy we can mess up */
127 mybuf_p = strdup(buf_p);
140 /* outer loop: delimit at \n boundaries */
142 while ((line = strsep(&cur, "\n"))) {
143 /* now split the line on the first # to strip out comments */
145 notcomment = strsep(&comment, "#");
147 /* inner loop: delimit at , boundaries */
148 while ((entry = strsep(¬comment, ","))) {
149 /* now split into three :-delimited fields */
150 tag = strsep(&entry, ":");
152 /* printf("no tag\n"); */
156 tag = string_skip_whitespace(tag);
157 if ((*tag == '\0') && (!entry)) {
159 * is an entirely comment line, skip to next
164 string_trim_trailing_whitespace(tag);
166 qualifier = strsep(&entry, ":");
168 /* printf("no qualifier\n"); */
172 qualifier = string_skip_whitespace(qualifier);
173 string_trim_trailing_whitespace(qualifier);
175 permission = strsep(&entry, ":");
176 if ((!permission) || (entry)) {
177 /* printf("no permission, or more stuff\n"); */
181 permission = string_skip_whitespace(permission);
182 string_trim_trailing_whitespace(permission);
184 /* printf("[%s/%s/%s]\n", tag, qualifier,
187 t = acl_string_to_tag(tag, qualifier);
193 error = acl_string_to_perm(permission, &p);
204 if (*qualifier != '\0') {
213 error = acl_name_to_id(t, qualifier, &id);
223 error = acl_add_entry(acl, t, id, p);
230 /* XXX should we only return ACLs valid according to acl_valid? */
231 /* verify validity of the ACL we read in */
232 if (acl_valid(acl) == -1) {