xref: /freebsd/lib/libgssapi/gss_duplicate_name.c (revision a64729f5077d77e13b9497cb33ecb3c82e606ee8)
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 #include <stdlib.h>
31 #include <string.h>
32 #include <errno.h>
33 
34 #include "mech_switch.h"
35 #include "name.h"
36 
37 OM_uint32 gss_duplicate_name(OM_uint32 *minor_status,
38     const gss_name_t src_name,
39     gss_name_t *dest_name)
40 {
41 	OM_uint32		major_status;
42 	struct _gss_name	*name = (struct _gss_name *) src_name;
43 	struct _gss_name	*new_name;
44 	struct _gss_mechanism_name *mn;
45 
46 	*minor_status = 0;
47 	*dest_name = GSS_C_NO_NAME;
48 
49 	/*
50 	 * If this name has a value (i.e. it didn't come from
51 	 * gss_canonicalize_name(), we re-import the thing. Otherwise,
52 	 * we make a copy of the mechanism names.
53 	 */
54 	if (name->gn_value.value) {
55 		major_status = gss_import_name(minor_status,
56 		    &name->gn_value, &name->gn_type, dest_name);
57 		if (major_status != GSS_S_COMPLETE)
58 			return (major_status);
59 		new_name = (struct _gss_name *) *dest_name;
60 
61 		SLIST_FOREACH(mn, &name->gn_mn, gmn_link) {
62 			struct _gss_mechanism_name *mn2;
63 			_gss_find_mn(minor_status, new_name,
64 			    mn->gmn_mech_oid, &mn2);
65 		}
66 	} else {
67 		new_name = malloc(sizeof(struct _gss_name));
68 		if (!new_name) {
69 			*minor_status = ENOMEM;
70 			return (GSS_S_FAILURE);
71 		}
72 		memset(new_name, 0, sizeof(struct _gss_name));
73 		SLIST_INIT(&new_name->gn_mn);
74 		*dest_name = (gss_name_t) new_name;
75 
76 		SLIST_FOREACH(mn, &name->gn_mn, gmn_link) {
77 			struct _gss_mechanism_name *new_mn;
78 
79 			new_mn = malloc(sizeof(*new_mn));
80 			if (!new_mn) {
81 				*minor_status = ENOMEM;
82 				return (GSS_S_FAILURE);
83 			}
84 			new_mn->gmn_mech = mn->gmn_mech;
85 			new_mn->gmn_mech_oid = mn->gmn_mech_oid;
86 
87 			major_status =
88 			    mn->gmn_mech->gm_duplicate_name(minor_status,
89 				mn->gmn_name, &new_mn->gmn_name);
90 			if (major_status != GSS_S_COMPLETE) {
91 				free(new_mn);
92 				continue;
93 			}
94 			SLIST_INSERT_HEAD(&new_name->gn_mn, new_mn, gmn_link);
95 		}
96 
97 	}
98 
99 	return (GSS_S_COMPLETE);
100 }
101