2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2008, 2009 Edward Tomasz NapieraĆa <trasz@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
42 #include <sys/syscall.h>
43 #include <sys/types.h>
46 #include "acl_support.h"
48 #define MAX_ENTRY_LENGTH 512
51 * Parse the tag field of ACL entry passed as "str". If qualifier
52 * needs to follow, then the variable referenced by "need_qualifier"
53 * is set to 1, otherwise it's set to 0.
56 parse_tag(const char *str, acl_entry_t entry, int *need_qualifier)
59 assert(need_qualifier != NULL);
62 if (strcmp(str, "owner@") == 0)
63 return (acl_set_tag_type(entry, ACL_USER_OBJ));
64 if (strcmp(str, "group@") == 0)
65 return (acl_set_tag_type(entry, ACL_GROUP_OBJ));
66 if (strcmp(str, "everyone@") == 0)
67 return (acl_set_tag_type(entry, ACL_EVERYONE));
71 if (strcmp(str, "user") == 0 || strcmp(str, "u") == 0)
72 return (acl_set_tag_type(entry, ACL_USER));
73 if (strcmp(str, "group") == 0 || strcmp(str, "g") == 0)
74 return (acl_set_tag_type(entry, ACL_GROUP));
76 warnx("malformed ACL: invalid \"tag\" field");
82 * Parse the qualifier field of ACL entry passed as "str".
83 * If user or group name cannot be resolved, then the variable
84 * referenced by "need_qualifier" is set to 1; it will be checked
85 * later to figure out whether the appended_id is required.
88 parse_qualifier(char *str, acl_entry_t entry, int *need_qualifier)
90 int qualifier_length, error;
94 assert(need_qualifier != NULL);
97 qualifier_length = strlen(str);
99 if (qualifier_length == 0) {
100 warnx("malformed ACL: empty \"qualifier\" field");
104 error = acl_get_tag_type(entry, &tag);
108 error = _acl_name_to_id(tag, str, &id);
114 return (acl_set_qualifier(entry, &id));
118 parse_access_mask(char *str, acl_entry_t entry)
123 error = _nfs4_parse_access_mask(str, &perm);
127 error = acl_set_permset(entry, &perm);
133 parse_flags(char *str, acl_entry_t entry)
138 error = _nfs4_parse_flags(str, &flags);
142 error = acl_set_flagset_np(entry, &flags);
148 parse_entry_type(const char *str, acl_entry_t entry)
151 if (strcmp(str, "allow") == 0)
152 return (acl_set_entry_type_np(entry, ACL_ENTRY_TYPE_ALLOW));
153 if (strcmp(str, "deny") == 0)
154 return (acl_set_entry_type_np(entry, ACL_ENTRY_TYPE_DENY));
155 if (strcmp(str, "audit") == 0)
156 return (acl_set_entry_type_np(entry, ACL_ENTRY_TYPE_AUDIT));
157 if (strcmp(str, "alarm") == 0)
158 return (acl_set_entry_type_np(entry, ACL_ENTRY_TYPE_ALARM));
160 warnx("malformed ACL: invalid \"type\" field");
166 parse_appended_id(char *str, acl_entry_t entry)
168 int qualifier_length;
172 qualifier_length = strlen(str);
173 if (qualifier_length == 0) {
174 warnx("malformed ACL: \"appended id\" field present, "
179 id = strtod(str, &end);
180 if (end - str != qualifier_length) {
181 warnx("malformed ACL: appended id is not a number");
185 return (acl_set_qualifier(entry, &id));
189 number_of_colons(const char *str)
193 while (*str != '\0') {
204 _nfs4_acl_entry_from_text(acl_t aclp, char *str)
206 int error, need_qualifier;
208 char *field, *qualifier_field;
210 error = acl_create_entry(&aclp, &entry);
214 assert(_entry_brand(entry) == ACL_BRAND_NFS4);
217 goto truncated_entry;
218 field = strsep(&str, ":");
220 field = string_skip_whitespace(field);
221 if ((*field == '\0') && (!str)) {
223 * Is an entirely comment line, skip to next
229 error = parse_tag(field, entry, &need_qualifier);
231 goto malformed_field;
233 if (need_qualifier) {
235 goto truncated_entry;
236 qualifier_field = field = strsep(&str, ":");
237 error = parse_qualifier(field, entry, &need_qualifier);
239 goto malformed_field;
243 goto truncated_entry;
244 field = strsep(&str, ":");
245 error = parse_access_mask(field, entry);
247 goto malformed_field;
250 goto truncated_entry;
251 /* Do we have "flags" field? */
252 if (number_of_colons(str) > 0) {
253 field = strsep(&str, ":");
254 error = parse_flags(field, entry);
256 goto malformed_field;
260 goto truncated_entry;
261 field = strsep(&str, ":");
262 error = parse_entry_type(field, entry);
264 goto malformed_field;
266 if (need_qualifier) {
268 warnx("malformed ACL: unknown user or group name "
269 "\"%s\"", qualifier_field);
270 goto truncated_entry;
273 error = parse_appended_id(str, entry);
275 goto malformed_field;
282 acl_delete_entry(aclp, entry);