xref: /freebsd/lib/libgssapi/gss_display_name.c (revision aa24f48b361effe51163877d84f1b70d32b77e04)
1 /*-
2  * Copyright (c) 2005 Doug Rabson
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  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  *	$FreeBSD$
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 
38 OM_uint32
39 gss_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