xref: /xnu-11215/security/mac_data.c (revision a5e72196)
1 /*
2  * Copyright (c) 2007 Apple Inc. All rights reserved.
3  *
4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5  *
6  * This file contains Original Code and/or Modifications of Original Code
7  * as defined in and that are subject to the Apple Public Source License
8  * Version 2.0 (the 'License'). You may not use this file except in
9  * compliance with the License. The rights granted to you under the License
10  * may not be used to create, or enable the creation or redistribution of,
11  * unlawful or unlicensed copies of an Apple operating system, or to
12  * circumvent, violate, or enable the circumvention or violation of, any
13  * terms of an Apple operating system software license agreement.
14  *
15  * Please obtain a copy of the License at
16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17  *
18  * The Original Code and all software distributed under the License are
19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23  * Please see the License for the specific language governing rights and
24  * limitations under the License.
25  *
26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27  */
28 /*-
29  * Copyright (c) 2006 SPARTA, Inc.
30  * All rights reserved.
31  *
32  * Redistribution and use in source and binary forms, with or without
33  * modification, are permitted provided that the following conditions
34  * are met:
35  * 1. Redistributions of source code must retain the above copyright
36  *    notice, this list of conditions and the following disclaimer.
37  * 2. Redistributions in binary form must reproduce the above copyright
38  *    notice, this list of conditions and the following disclaimer in the
39  *    documentation and/or other materials provided with the distribution.
40  *
41  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  */
53 
54 #include <sys/types.h>
55 
56 #include "mac_internal.h"
57 
58 int
mac_find_policy_data(const mac_policy_handle_t handle,const char * key,void ** valp,size_t * sizep)59 mac_find_policy_data(const mac_policy_handle_t handle, const char *key,
60     void **valp, size_t *sizep)
61 {
62 	struct mac_policy_conf *mpc;
63 	int error = ENOENT;
64 
65 	if ((mpc = mac_get_mpc(handle)) != NULL) {
66 		error = mac_find_module_data(mpc->mpc_data, key, valp, sizep);
67 	}
68 	return error;
69 }
70 
71 int
mac_find_module_data(struct mac_module_data * mmd,const char * key,void ** valp,size_t * sizep)72 mac_find_module_data(struct mac_module_data *mmd, const char *key,
73     void **valp, size_t *sizep)
74 {
75 	int error = ENOENT;
76 	unsigned int i;
77 
78 	if (mmd != NULL) {
79 		for (i = 0; i < mmd->count; i++) {
80 			if (strcmp(key, mmd->data[i].key) == 0) {
81 				*valp = mmd->data[i].value;
82 				*sizep = (size_t)mmd->data[i].value_size;
83 				error = 0;
84 				break;
85 			}
86 		}
87 	}
88 
89 	return error;
90 }
91