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
33#include "mech_locl.h"
34
35GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
36gss_create_empty_buffer_set
37	   (OM_uint32 * minor_status,
38	    gss_buffer_set_t *buffer_set)
39{
40    gss_buffer_set_t set;
41
42    set = (gss_buffer_set_desc *) malloc(sizeof(*set));
43    if (set == GSS_C_NO_BUFFER_SET) {
44	*minor_status = ENOMEM;
45	return GSS_S_FAILURE;
46    }
47
48    set->count = 0;
49    set->elements = NULL;
50
51    *buffer_set = set;
52
53    *minor_status = 0;
54    return GSS_S_COMPLETE;
55}
56
57GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
58gss_add_buffer_set_member
59	   (OM_uint32 * minor_status,
60	    const gss_buffer_t member_buffer,
61	    gss_buffer_set_t *buffer_set)
62{
63    gss_buffer_set_t set;
64    gss_buffer_t p;
65    OM_uint32 ret;
66
67    if (*buffer_set == GSS_C_NO_BUFFER_SET) {
68	ret = gss_create_empty_buffer_set(minor_status,
69					  buffer_set);
70	if (ret) {
71	    return ret;
72	}
73    }
74
75    set = *buffer_set;
76    set->elements = realloc(set->elements,
77			    (set->count + 1) * sizeof(set->elements[0]));
78    if (set->elements == NULL) {
79	*minor_status = ENOMEM;
80	return GSS_S_FAILURE;
81    }
82
83    p = &set->elements[set->count];
84
85    p->value = malloc(member_buffer->length);
86    if (p->value == NULL) {
87	*minor_status = ENOMEM;
88	return GSS_S_FAILURE;
89    }
90    memcpy(p->value, member_buffer->value, member_buffer->length);
91    p->length = member_buffer->length;
92
93    set->count++;
94
95    *minor_status = 0;
96    return GSS_S_COMPLETE;
97}
98
99GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
100gss_release_buffer_set(OM_uint32 * minor_status,
101		       gss_buffer_set_t *buffer_set)
102{
103    size_t i;
104    OM_uint32 minor;
105
106    *minor_status = 0;
107
108    if (*buffer_set == GSS_C_NO_BUFFER_SET)
109	return GSS_S_COMPLETE;
110
111    for (i = 0; i < (*buffer_set)->count; i++)
112	gss_release_buffer(&minor, &((*buffer_set)->elements[i]));
113
114    free((*buffer_set)->elements);
115
116    (*buffer_set)->elements = NULL;
117    (*buffer_set)->count = 0;
118
119    free(*buffer_set);
120    *buffer_set = GSS_C_NO_BUFFER_SET;
121
122    return GSS_S_COMPLETE;
123}
124
125