xref: /illumos-gate/usr/src/lib/libgss/g_dup_name.c (revision 20a7641f9918de8574b8b3b47dbe35c4bfc78df1)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
23  */
24 
25 /*
26  *  routine gss_duplicate_name
27  *
28  * This routine does not rely on mechanism implementation of this
29  * name, but instead uses mechanism specific gss_import_name routine.
30  */
31 
32 #include <mechglueP.h>
33 #include "gssapiP_generic.h"
34 #ifdef HAVE_STDLIB_H
35 #include <stdlib.h>
36 #endif
37 #include <string.h>
38 #include <errno.h>
39 
40 static OM_uint32
41 val_dup_name_args(
42 	OM_uint32 *minor_status,
43 	const gss_name_t src_name,
44 	gss_name_t *dest_name)
45 {
46 
47 	/* Initialize outputs. */
48 
49 	if (minor_status != NULL)
50 		*minor_status = 0;
51 
52 	if (dest_name != NULL)
53 		*dest_name = GSS_C_NO_NAME;
54 
55 	/* Validate arguments. */
56 
57 	if (minor_status == NULL)
58 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
59 
60 	/* if output_name is NULL, simply return */
61 	if (dest_name == NULL)
62 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
63 
64 	if (src_name == GSS_C_NO_NAME)
65 		return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_BAD_NAME);
66 
67 	return (GSS_S_COMPLETE);
68 }
69 
70 OM_uint32
71 gss_duplicate_name(OM_uint32 *minor_status, const gss_name_t src_name,
72     gss_name_t *dest_name)
73 {
74 	gss_union_name_t src_union, dest_union;
75 	OM_uint32 major_status = GSS_S_FAILURE;
76 
77 	major_status = val_dup_name_args(minor_status, src_name, dest_name);
78 	if (major_status != GSS_S_COMPLETE)
79 		return (major_status);
80 
81 	major_status = GSS_S_FAILURE;
82 
83 	src_union = (gss_union_name_t)src_name;
84 
85 	/*
86 	 * First create the union name struct that will hold the external
87 	 * name and the name type.
88 	 */
89 	dest_union = (gss_union_name_t)malloc(sizeof (gss_union_name_desc));
90 	if (!dest_union)
91 		goto allocation_failure;
92 
93 	dest_union->mech_type = 0;
94 	dest_union->mech_name = 0;
95 	dest_union->name_type = 0;
96 	dest_union->external_name = 0;
97 
98 	/* Now copy the external representaion */
99 	if (gssint_create_copy_buffer(src_union->external_name,
100 	    &dest_union->external_name, 0))
101 		goto allocation_failure;
102 
103 	if (src_union->name_type != GSS_C_NULL_OID) {
104 		major_status = generic_gss_copy_oid(minor_status,
105 		    src_union->name_type, &dest_union->name_type);
106 		if (major_status != GSS_S_COMPLETE) {
107 			map_errcode(minor_status);
108 			goto allocation_failure;
109 		}
110 	}
111 
112 	/*
113 	 * See if source name is mechanim specific, if so then need to import it
114 	 */
115 	if (src_union->mech_type) {
116 		major_status = generic_gss_copy_oid(minor_status,
117 		    src_union->mech_type, &dest_union->mech_type);
118 		if (major_status != GSS_S_COMPLETE) {
119 			map_errcode(minor_status);
120 			goto allocation_failure;
121 		}
122 
123 		major_status = __gss_import_internal_name(minor_status,
124 		    dest_union->mech_type, dest_union, &dest_union->mech_name);
125 		if (major_status != GSS_S_COMPLETE)
126 			goto allocation_failure;
127 	}
128 
129 
130 	*dest_name = (gss_name_t)dest_union;
131 	return (GSS_S_COMPLETE);
132 
133 allocation_failure:
134 	if (dest_union) {
135 		if (dest_union->external_name) {
136 			free(dest_union->external_name->value);
137 			free(dest_union->external_name);
138 		}
139 		if (dest_union->name_type) {
140 			(void) generic_gss_release_oid(minor_status,
141 			    &dest_union->name_type);
142 		}
143 		if (dest_union->mech_name) {
144 			(void) __gss_release_internal_name(minor_status,
145 			    dest_union->mech_type, &dest_union->mech_name);
146 		}
147 		if (dest_union->mech_type) {
148 			(void) generic_gss_release_oid(minor_status,
149 			    &dest_union->mech_type);
150 		}
151 		free(dest_union);
152 	}
153 	return (major_status);
154 } /*	gss_duplicate_name	*/
155