xref: /freebsd/lib/libgssapi/gss_display_name.c (revision 4f52dfbb)
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 
40 OM_uint32
41 gss_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