xref: /freebsd/lib/libgssapi/gss_indicate_mechs.c (revision 06c3fb2749bda94cb5201f81ffdb8fa6c3161b2e)
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 
33 OM_uint32
34 gss_indicate_mechs(OM_uint32 *minor_status,
35     gss_OID_set *mech_set)
36 {
37 	struct _gss_mech_switch *m;
38 	OM_uint32 major_status;
39 	gss_OID_set set;
40 	size_t i;
41 
42 	_gss_load_mech();
43 
44 	major_status = gss_create_empty_oid_set(minor_status, mech_set);
45 	if (major_status)
46 		return (major_status);
47 
48 	SLIST_FOREACH(m, &_gss_mechs, gm_link) {
49 		if (m->gm_indicate_mechs) {
50 			major_status = m->gm_indicate_mechs(minor_status, &set);
51 			if (major_status)
52 				continue;
53 			if (set == GSS_C_NO_OID_SET) {
54 				major_status = gss_add_oid_set_member(
55 					minor_status,
56 					&m->gm_mech_oid, mech_set);
57 				continue;
58 			}
59 			for (i = 0; i < set->count; i++)
60 				major_status = gss_add_oid_set_member(minor_status,
61 				    &set->elements[i], mech_set);
62 			gss_release_oid_set(minor_status, &set);
63 		} else {
64 			major_status = gss_add_oid_set_member(
65 			    minor_status, &m->gm_mech_oid, mech_set);
66 		}
67 	}
68 
69 	*minor_status = 0;
70 	return (GSS_S_COMPLETE);
71 }
72