xref: /freebsd/lib/libgssapi/gss_compare_name.c (revision 4f52dfbb)
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 #include <string.h>
33 
34 #include "mech_switch.h"
35 #include "name.h"
36 #include "utils.h"
37 
38 OM_uint32
39 gss_compare_name(OM_uint32 *minor_status,
40     const gss_name_t name1_arg,
41     const gss_name_t name2_arg,
42     int *name_equal)
43 {
44 	struct _gss_name *name1 = (struct _gss_name *) name1_arg;
45 	struct _gss_name *name2 = (struct _gss_name *) name2_arg;
46 
47 	/*
48 	 * First check the implementation-independant name if both
49 	 * names have one. Otherwise, try to find common mechanism
50 	 * names and compare them.
51 	 */
52 	if (name1->gn_value.value && name2->gn_value.value) {
53 		*name_equal = 1;
54 		if (!gss_oid_equal(&name1->gn_type, &name2->gn_type)) {
55 			*name_equal = 0;
56 		} else if (name1->gn_value.length != name2->gn_value.length ||
57 		    memcmp(name1->gn_value.value, name1->gn_value.value,
58 			name1->gn_value.length)) {
59 			*name_equal = 0;
60 		}
61 	} else {
62 		struct _gss_mechanism_name *mn1;
63 		struct _gss_mechanism_name *mn2;
64 
65 		SLIST_FOREACH(mn1, &name1->gn_mn, gmn_link) {
66 			OM_uint32 major_status;
67 
68 			major_status = _gss_find_mn(minor_status, name2,
69 						    mn1->gmn_mech_oid, &mn2);
70 			if (major_status == GSS_S_COMPLETE) {
71 				return (mn1->gmn_mech->gm_compare_name(
72 						minor_status,
73 						mn1->gmn_name,
74 						mn2->gmn_name,
75 						name_equal));
76 			}
77 		}
78 		*name_equal = 0;
79 	}
80 
81 	*minor_status = 0;
82 	return (GSS_S_COMPLETE);
83 }
84