xref: /freebsd/crypto/heimdal/lib/gssapi/mech/gss_compare_name.c (revision b9f654b163bce26de79705e77b872427c9f2afa1)
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_compare_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_compare_name(OM_uint32 *minor_status,
33     const gss_name_t name1_arg,
34     const gss_name_t name2_arg,
35     int *name_equal)
36 {
37 	struct _gss_name *name1 = (struct _gss_name *) name1_arg;
38 	struct _gss_name *name2 = (struct _gss_name *) name2_arg;
39 
40 	/*
41 	 * First check the implementation-independant name if both
42 	 * names have one. Otherwise, try to find common mechanism
43 	 * names and compare them.
44 	 */
45 	if (name1->gn_value.value && name2->gn_value.value) {
46 		*name_equal = 1;
47 		if (!gss_oid_equal(&name1->gn_type, &name2->gn_type)) {
48 			*name_equal = 0;
49 		} else if (name1->gn_value.length != name2->gn_value.length ||
50 		    memcmp(name1->gn_value.value, name1->gn_value.value,
51 			name1->gn_value.length)) {
52 			*name_equal = 0;
53 		}
54 	} else {
55 		struct _gss_mechanism_name *mn1;
56 		struct _gss_mechanism_name *mn2;
57 
58 		HEIM_SLIST_FOREACH(mn1, &name1->gn_mn, gmn_link) {
59 			OM_uint32 major_status;
60 
61 			major_status = _gss_find_mn(minor_status, name2,
62 						    mn1->gmn_mech_oid, &mn2);
63 			if (major_status == GSS_S_COMPLETE) {
64 				return (mn1->gmn_mech->gm_compare_name(
65 						minor_status,
66 						mn1->gmn_name,
67 						mn2->gmn_name,
68 						name_equal));
69 			}
70 		}
71 		*name_equal = 0;
72 	}
73 
74 	*minor_status = 0;
75 	return (GSS_S_COMPLETE);
76 }
77