1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 *	$FreeBSD$
29 */
30
31#include <gssapi/gssapi.h>
32#include <stdlib.h>
33#include <string.h>
34#include <errno.h>
35
36#include "mech_switch.h"
37#include "name.h"
38#include "utils.h"
39
40OM_uint32
41gss_display_name(OM_uint32 *minor_status,
42    const gss_name_t input_name,
43    gss_buffer_t output_name_buffer,
44    gss_OID *output_name_type)
45{
46	OM_uint32 major_status;
47	struct _gss_name *name = (struct _gss_name *) input_name;
48	struct _gss_mechanism_name *mn;
49
50	_gss_buffer_zero(output_name_buffer);
51	if (output_name_type)
52		*output_name_type = GSS_C_NO_OID;
53
54	if (name == NULL) {
55		*minor_status = 0;
56		return (GSS_S_BAD_NAME);
57	}
58
59	/*
60	 * If we know it, copy the buffer used to import the name in
61	 * the first place. Otherwise, ask all the MNs in turn if
62	 * they can display the thing.
63	 */
64	if (name->gn_value.value) {
65		output_name_buffer->value = malloc(name->gn_value.length);
66		if (!output_name_buffer->value) {
67			*minor_status = ENOMEM;
68			return (GSS_S_FAILURE);
69		}
70		output_name_buffer->length = name->gn_value.length;
71		memcpy(output_name_buffer->value, name->gn_value.value,
72		    output_name_buffer->length);
73		if (output_name_type)
74			*output_name_type = &name->gn_type;
75
76		*minor_status = 0;
77		return (GSS_S_COMPLETE);
78	} else {
79		SLIST_FOREACH(mn, &name->gn_mn, gmn_link) {
80			major_status = mn->gmn_mech->gm_display_name(
81				minor_status, mn->gmn_name,
82				output_name_buffer,
83				output_name_type);
84			if (major_status == GSS_S_COMPLETE)
85				return (GSS_S_COMPLETE);
86		}
87	}
88
89	*minor_status = 0;
90	return (GSS_S_FAILURE);
91}
92