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: releng/10.1/sys/kgssapi/gss_unwrap.c 184588 2008-11-03 10:38:00Z dfr $");
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
42 OM_uint32
43 gss_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
82 OM_uint32
83 gss_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
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