xref: /freebsd/lib/libgssapi/gss_inquire_mechs_for_name.c (revision c66ec88fed842fbaad62c30d510644ceb7bd2d71)
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 
33 #include "mech_switch.h"
34 #include "name.h"
35 
36 OM_uint32
37 gss_inquire_mechs_for_name(OM_uint32 *minor_status,
38     const gss_name_t input_name,
39     gss_OID_set *mech_types)
40 {
41 	OM_uint32		major_status;
42 	struct _gss_name	*name = (struct _gss_name *) input_name;
43 	struct _gss_mech_switch	*m;
44 	gss_OID_set		name_types;
45 	int			present;
46 
47 	*minor_status = 0;
48 
49 	_gss_load_mech();
50 
51 	major_status = gss_create_empty_oid_set(minor_status, mech_types);
52 	if (major_status)
53 		return (major_status);
54 
55 	/*
56 	 * We go through all the loaded mechanisms and see if this
57 	 * name's type is supported by the mechanism. If it is, add
58 	 * the mechanism to the set.
59 	 */
60 	SLIST_FOREACH(m, &_gss_mechs, gm_link) {
61 		major_status = gss_inquire_names_for_mech(minor_status,
62 		    &m->gm_mech_oid, &name_types);
63 		if (major_status) {
64 			gss_release_oid_set(minor_status, mech_types);
65 			return (major_status);
66 		}
67 		gss_test_oid_set_member(minor_status,
68 		    &name->gn_type, name_types, &present);
69 		gss_release_oid_set(minor_status, &name_types);
70 		if (present) {
71 			major_status = gss_add_oid_set_member(minor_status,
72 			    &m->gm_mech_oid, mech_types);
73 			if (major_status) {
74 				gss_release_oid_set(minor_status, mech_types);
75 				return (major_status);
76 			}
77 		}
78 	}
79 
80 	return (GSS_S_COMPLETE);
81 }
82