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 "mech_switch.h"
35#include "name.h"
36#include "utils.h"
37
38OM_uint32
39gss_display_name(OM_uint32 *minor_status,
40    const gss_name_t input_name,
41    gss_buffer_t output_name_buffer,
42    gss_OID *output_name_type)
43{
44	OM_uint32 major_status;
45	struct _gss_name *name = (struct _gss_name *) input_name;
46	struct _gss_mechanism_name *mn;
47
48	_gss_buffer_zero(output_name_buffer);
49	if (output_name_type)
50		*output_name_type = GSS_C_NO_OID;
51
52	if (name == NULL) {
53		*minor_status = 0;
54		return (GSS_S_BAD_NAME);
55	}
56
57	/*
58	 * If we know it, copy the buffer used to import the name in
59	 * the first place. Otherwise, ask all the MNs in turn if
60	 * they can display the thing.
61	 */
62	if (name->gn_value.value) {
63		output_name_buffer->value = malloc(name->gn_value.length);
64		if (!output_name_buffer->value) {
65			*minor_status = ENOMEM;
66			return (GSS_S_FAILURE);
67		}
68		output_name_buffer->length = name->gn_value.length;
69		memcpy(output_name_buffer->value, name->gn_value.value,
70		    output_name_buffer->length);
71		if (output_name_type)
72			*output_name_type = &name->gn_type;
73
74		*minor_status = 0;
75		return (GSS_S_COMPLETE);
76	} else {
77		SLIST_FOREACH(mn, &name->gn_mn, gmn_link) {
78			major_status = mn->gmn_mech->gm_display_name(
79				minor_status, mn->gmn_name,
80				output_name_buffer,
81				output_name_type);
82			if (major_status == GSS_S_COMPLETE)
83				return (GSS_S_COMPLETE);
84		}
85	}
86
87	*minor_status = 0;
88	return (GSS_S_FAILURE);
89}
90