xref: /freebsd/lib/libgssapi/gss_utils.c (revision 6ef644f5889afbd0f681b08ed1a2f369524af83e)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2005 Doug Rabson
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
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.
15  *
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
26  * SUCH DAMAGE.
27  */
28 
29 #include <gssapi/gssapi.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <errno.h>
33 
34 #include "utils.h"
35 
36 int
37 gss_oid_equal(const gss_OID oid1, const gss_OID oid2)
38 {
39 
40 	if (oid1 == oid2)
41 		return (1);
42 	if (!oid1 || !oid2)
43 		return (0);
44 	if (oid1->length != oid2->length)
45 		return (0);
46 	if (memcmp(oid1->elements, oid2->elements, oid1->length))
47 		return (0);
48 	return (1);
49 }
50 
51 OM_uint32
52 _gss_copy_oid(OM_uint32 *minor_status,
53     const gss_OID from_oid, gss_OID to_oid)
54 {
55 	size_t len = from_oid->length;
56 
57 	*minor_status = 0;
58 	to_oid->elements = malloc(len);
59 	if (!to_oid->elements) {
60 		to_oid->length = 0;
61 		*minor_status = ENOMEM;
62 		return GSS_S_FAILURE;
63 	}
64 	to_oid->length = len;
65 	memcpy(to_oid->elements, from_oid->elements, len);
66 	return (GSS_S_COMPLETE);
67 }
68 
69 OM_uint32
70 _gss_free_oid(OM_uint32 *minor_status, gss_OID oid)
71 {
72 
73 	*minor_status = 0;
74 	if (oid->elements) {
75 		free(oid->elements);
76 		oid->elements = NULL;
77 		oid->length = 0;
78 	}
79 	return (GSS_S_COMPLETE);
80 }
81 
82 OM_uint32
83 _gss_copy_buffer(OM_uint32 *minor_status,
84     const gss_buffer_t from_buf, gss_buffer_t to_buf)
85 {
86 	size_t len = from_buf->length;
87 
88 	*minor_status = 0;
89 	to_buf->value = malloc(len);
90 	if (!to_buf->value) {
91 		*minor_status = ENOMEM;
92 		to_buf->length = 0;
93 		return GSS_S_FAILURE;
94 	}
95 	to_buf->length = len;
96 	memcpy(to_buf->value, from_buf->value, len);
97 	return (GSS_S_COMPLETE);
98 }
99 
100