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 *  glue routine for gss_export_sec_context
27 */
28#ifndef LEAN_CLIENT
29
30#include <mechglueP.h>
31#include "gssapiP_generic.h"
32#include <stdio.h>
33#include <errno.h>
34#ifdef HAVE_STDLIB_H
35#include <stdlib.h>
36#endif
37#include <string.h>
38
39static OM_uint32 val_exp_sec_ctx_args(
40	OM_uint32 *minor_status,
41	gss_ctx_id_t *context_handle,
42	gss_buffer_t interprocess_token)
43{
44
45	/* Initialize outputs. */
46
47	if (minor_status != NULL)
48		*minor_status = 0;
49
50	if (interprocess_token != GSS_C_NO_BUFFER) {
51		interprocess_token->length = 0;
52		interprocess_token->value = NULL;
53	}
54
55	/* Validate arguments. */
56
57	if (minor_status == NULL)
58		return (GSS_S_CALL_INACCESSIBLE_WRITE);
59
60	if (context_handle == NULL || *context_handle == GSS_C_NO_CONTEXT)
61		return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);
62
63	if (interprocess_token == GSS_C_NO_BUFFER)
64		return (GSS_S_CALL_INACCESSIBLE_WRITE);
65
66	return (GSS_S_COMPLETE);
67}
68
69OM_uint32
70gss_export_sec_context(minor_status,
71			context_handle,
72			interprocess_token)
73
74OM_uint32 *minor_status;
75gss_ctx_id_t *context_handle;
76gss_buffer_t interprocess_token;
77
78{
79	OM_uint32		status;
80	OM_uint32 		length;
81	gss_union_ctx_id_t	ctx;
82	gss_mechanism		mech;
83	gss_buffer_desc		token;
84	char			*buf;
85
86	status = val_exp_sec_ctx_args(minor_status,
87				context_handle, interprocess_token);
88	if (status != GSS_S_COMPLETE)
89		return (status);
90
91	/*
92	 * select the approprate underlying mechanism routine and
93	 * call it.
94	 */
95
96	ctx = (gss_union_ctx_id_t)*context_handle;
97	mech = __gss_get_mechanism(ctx->mech_type);
98	if (!mech)
99		return (GSS_S_BAD_MECH);
100	if (!mech->gss_export_sec_context)
101		return (GSS_S_UNAVAILABLE);
102
103	status = mech->gss_export_sec_context(mech->context, minor_status,
104					&ctx->internal_ctx_id, &token);
105	if (status != GSS_S_COMPLETE) {
106		map_error(minor_status, mech);
107		return (status);
108	}
109
110	length = token.length + 4 + ctx->mech_type->length;
111	interprocess_token->length = length;
112	interprocess_token->value = malloc(length);
113	if (interprocess_token->value == 0) {
114		(void) gss_release_buffer(minor_status, &token);
115		return (GSS_S_FAILURE);
116	}
117	buf = interprocess_token->value;
118	length = ctx->mech_type->length;
119	buf[3] = (unsigned char) (length & 0xFF);
120	length >>= 8;
121	buf[2] = (unsigned char) (length & 0xFF);
122	length >>= 8;
123	buf[1] = (unsigned char) (length & 0xFF);
124	length >>= 8;
125	buf[0] = (unsigned char) (length & 0xFF);
126	(void) memcpy(buf+4, ctx->mech_type->elements,
127			(size_t)ctx->mech_type->length);
128	(void) memcpy(buf+4+ctx->mech_type->length, token.value, token.length);
129
130	(void) gss_release_buffer(minor_status, &token);
131
132	free(ctx->mech_type->elements);
133	free(ctx->mech_type);
134	free(ctx);
135	*context_handle = 0;
136
137	return (GSS_S_COMPLETE);
138}
139#endif /*LEAN_CLIENT */
140