1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <dfr@rabson.org>
6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD$");
32
33#include <sys/param.h>
34#include <sys/kernel.h>
35#include <sys/kobj.h>
36#include <sys/malloc.h>
37#include <sys/mbuf.h>
38
39#include <kgssapi/gssapi.h>
40#include <kgssapi/gssapi_impl.h>
41
42#include "kgss_if.h"
43
44OM_uint32
45gss_unwrap(OM_uint32 *minor_status,
46    const gss_ctx_id_t ctx,
47    const gss_buffer_t input_message_buffer,
48    gss_buffer_t output_message_buffer,
49    int *conf_state,
50    gss_qop_t *qop_state)
51{
52	OM_uint32 maj_stat;
53	struct mbuf *m;
54
55	if (!ctx) {
56		*minor_status = 0;
57		return (GSS_S_NO_CONTEXT);
58	}
59
60	MGET(m, M_WAITOK, MT_DATA);
61	if (input_message_buffer->length > MLEN)
62		MCLGET(m, M_WAITOK);
63	m_append(m, input_message_buffer->length, input_message_buffer->value);
64
65	maj_stat = KGSS_UNWRAP(ctx, minor_status, &m, conf_state, qop_state);
66
67	/*
68	 * On success, m is the wrapped message, on failure, m is
69	 * freed.
70	 */
71	if (maj_stat == GSS_S_COMPLETE) {
72		output_message_buffer->length = m_length(m, NULL);
73		output_message_buffer->value =
74			malloc(output_message_buffer->length,
75			    M_GSSAPI, M_WAITOK);
76		m_copydata(m, 0, output_message_buffer->length,
77		    output_message_buffer->value);
78		m_freem(m);
79	}
80
81	return (maj_stat);
82}
83
84OM_uint32
85gss_unwrap_mbuf(OM_uint32 *minor_status,
86    const gss_ctx_id_t ctx,
87    struct mbuf **mp,
88    int *conf_state,
89    gss_qop_t *qop_state)
90{
91
92	if (!ctx) {
93		*minor_status = 0;
94		return (GSS_S_NO_CONTEXT);
95	}
96
97	return (KGSS_UNWRAP(ctx, minor_status, mp, conf_state, qop_state));
98}
99
100