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