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 
31 #include "mech_switch.h"
32 #include "name.h"
33 
34 OM_uint32
35 gss_inquire_mechs_for_name(OM_uint32 *minor_status,
36     const gss_name_t input_name,
37     gss_OID_set *mech_types)
38 {
39 	OM_uint32		major_status;
40 	struct _gss_name	*name = (struct _gss_name *) input_name;
41 	struct _gss_mech_switch	*m;
42 	gss_OID_set		name_types;
43 	int			present;
44 
45 	*minor_status = 0;
46 
47 	_gss_load_mech();
48 
49 	major_status = gss_create_empty_oid_set(minor_status, mech_types);
50 	if (major_status)
51 		return (major_status);
52 
53 	/*
54 	 * We go through all the loaded mechanisms and see if this
55 	 * name's type is supported by the mechanism. If it is, add
56 	 * the mechanism to the set.
57 	 */
58 	SLIST_FOREACH(m, &_gss_mechs, gm_link) {
59 		major_status = gss_inquire_names_for_mech(minor_status,
60 		    &m->gm_mech_oid, &name_types);
61 		if (major_status) {
62 			gss_release_oid_set(minor_status, mech_types);
63 			return (major_status);
64 		}
65 		gss_test_oid_set_member(minor_status,
66 		    &name->gn_type, name_types, &present);
67 		gss_release_oid_set(minor_status, &name_types);
68 		if (present) {
69 			major_status = gss_add_oid_set_member(minor_status,
70 			    &m->gm_mech_oid, mech_types);
71 			if (major_status) {
72 				gss_release_oid_set(minor_status, mech_types);
73 				return (major_status);
74 			}
75 		}
76 	}
77 
78 	return (GSS_S_COMPLETE);
79 }
80