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: src/lib/libgssapi/gss_inquire_mechs_for_name.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
27  */
28 
29 #include "mech_locl.h"
30 
31 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
32 gss_inquire_mechs_for_name(OM_uint32 *minor_status,
33     const gss_name_t input_name,
34     gss_OID_set *mech_types)
35 {
36 	OM_uint32		major_status;
37 	struct _gss_name	*name = (struct _gss_name *) input_name;
38 	struct _gss_mech_switch	*m;
39 	gss_OID_set		name_types;
40 	int			present;
41 
42 	*minor_status = 0;
43 
44 	_gss_load_mech();
45 
46 	major_status = gss_create_empty_oid_set(minor_status, mech_types);
47 	if (major_status)
48 		return (major_status);
49 
50 	/*
51 	 * We go through all the loaded mechanisms and see if this
52 	 * name's type is supported by the mechanism. If it is, add
53 	 * the mechanism to the set.
54 	 */
55 	HEIM_SLIST_FOREACH(m, &_gss_mechs, gm_link) {
56 		major_status = gss_inquire_names_for_mech(minor_status,
57 		    &m->gm_mech_oid, &name_types);
58 		if (major_status) {
59 			gss_release_oid_set(minor_status, mech_types);
60 			return (major_status);
61 		}
62 		gss_test_oid_set_member(minor_status,
63 		    &name->gn_type, name_types, &present);
64 		gss_release_oid_set(minor_status, &name_types);
65 		if (present) {
66 			major_status = gss_add_oid_set_member(minor_status,
67 			    &m->gm_mech_oid, mech_types);
68 			if (major_status) {
69 				gss_release_oid_set(minor_status, mech_types);
70 				return (major_status);
71 			}
72 		}
73 	}
74 
75 	return (GSS_S_COMPLETE);
76 }
77