xref: /freebsd/lib/libgssapi/gss_utils.c (revision 722b16673c40aedf280895f2f2f676bb494518d7)
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