1/*
2 * Copyright (c) 2004, PADL Software Pty Ltd.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 *
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 * 3. Neither the name of PADL Software nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32/* $FreeBSD: stable/11/lib/libgssapi/gss_buffer_set.c 318121 2017-05-09 23:31:09Z pfg $ */
33
34#include <gssapi/gssapi.h>
35#include <errno.h>
36#include <stdlib.h>
37#include <string.h>
38
39/* RCSID("$Id: gss_buffer_set.c 18885 2006-10-24 21:53:02Z lha $"); */
40
41OM_uint32
42gss_create_empty_buffer_set(OM_uint32 * minor_status,
43    gss_buffer_set_t *buffer_set)
44{
45	gss_buffer_set_t set;
46
47	set = (gss_buffer_set_desc *) malloc(sizeof(*set));
48	if (set == GSS_C_NO_BUFFER_SET) {
49		*minor_status = ENOMEM;
50		return (GSS_S_FAILURE);
51	}
52
53	set->count = 0;
54	set->elements = NULL;
55
56	*buffer_set = set;
57
58	*minor_status = 0;
59	return (GSS_S_COMPLETE);
60}
61
62OM_uint32
63gss_add_buffer_set_member(OM_uint32 * minor_status,
64    const gss_buffer_t member_buffer, gss_buffer_set_t *buffer_set)
65{
66	gss_buffer_set_t set;
67	gss_buffer_t p;
68	OM_uint32 ret;
69
70	if (*buffer_set == GSS_C_NO_BUFFER_SET) {
71		ret = gss_create_empty_buffer_set(minor_status,
72		    buffer_set);
73		if (ret) {
74			return (ret);
75		}
76	}
77
78	set = *buffer_set;
79	set->elements = reallocarray(set->elements, set->count + 1,
80	    sizeof(set->elements[0]));
81	if (set->elements == NULL) {
82		*minor_status = ENOMEM;
83		return (GSS_S_FAILURE);
84	}
85
86	p = &set->elements[set->count];
87
88	p->value = malloc(member_buffer->length);
89	if (p->value == NULL) {
90		*minor_status = ENOMEM;
91		return (GSS_S_FAILURE);
92	}
93	memcpy(p->value, member_buffer->value, member_buffer->length);
94	p->length = member_buffer->length;
95
96	set->count++;
97
98	*minor_status = 0;
99	return (GSS_S_COMPLETE);
100}
101
102OM_uint32
103gss_release_buffer_set(OM_uint32 * minor_status, gss_buffer_set_t *buffer_set)
104{
105	size_t i;
106	OM_uint32 minor;
107
108	*minor_status = 0;
109
110	if (*buffer_set == GSS_C_NO_BUFFER_SET)
111		return (GSS_S_COMPLETE);
112
113	for (i = 0; i < (*buffer_set)->count; i++)
114		gss_release_buffer(&minor, &((*buffer_set)->elements[i]));
115
116	free((*buffer_set)->elements);
117
118	(*buffer_set)->elements = NULL;
119	(*buffer_set)->count = 0;
120
121	free(*buffer_set);
122	*buffer_set = GSS_C_NO_BUFFER_SET;
123
124	return (GSS_S_COMPLETE);
125}
126
127