xref: /freebsd/lib/libgssapi/gss_compare_name.c (revision 830940567b49bb0c08dfaed40418999e76616909)
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  *	$FreeBSD$
27  */
28 
29 #include <gssapi/gssapi.h>
30 #include <string.h>
31 
32 #include "mech_switch.h"
33 #include "name.h"
34 #include "utils.h"
35 
36 OM_uint32
37 gss_compare_name(OM_uint32 *minor_status,
38     const gss_name_t name1_arg,
39     const gss_name_t name2_arg,
40     int *name_equal)
41 {
42 	struct _gss_name *name1 = (struct _gss_name *) name1_arg;
43 	struct _gss_name *name2 = (struct _gss_name *) name2_arg;
44 
45 	/*
46 	 * First check the implementation-independant name if both
47 	 * names have one. Otherwise, try to find common mechanism
48 	 * names and compare them.
49 	 */
50 	if (name1->gn_value.value && name2->gn_value.value) {
51 		*name_equal = 1;
52 		if (!gss_oid_equal(&name1->gn_type, &name2->gn_type)) {
53 			*name_equal = 0;
54 		} else if (name1->gn_value.length != name2->gn_value.length ||
55 		    memcmp(name1->gn_value.value, name1->gn_value.value,
56 			name1->gn_value.length)) {
57 			*name_equal = 0;
58 		}
59 	} else {
60 		struct _gss_mechanism_name *mn1;
61 		struct _gss_mechanism_name *mn2;
62 
63 		SLIST_FOREACH(mn1, &name1->gn_mn, gmn_link) {
64 			OM_uint32 major_status;
65 
66 			major_status = _gss_find_mn(minor_status, name2,
67 						    mn1->gmn_mech_oid, &mn2);
68 			if (major_status == GSS_S_COMPLETE) {
69 				return (mn1->gmn_mech->gm_compare_name(
70 						minor_status,
71 						mn1->gmn_name,
72 						mn2->gmn_name,
73 						name_equal));
74 			}
75 		}
76 		*name_equal = 0;
77 	}
78 
79 	*minor_status = 0;
80 	return (GSS_S_COMPLETE);
81 }
82