1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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/param.h>
31 #include <sys/kernel.h>
32 #include <sys/kobj.h>
33 #include <sys/malloc.h>
34 #include <sys/mbuf.h>
35
36 #include <kgssapi/gssapi.h>
37 #include <kgssapi/gssapi_impl.h>
38
39 #include "kgss_if.h"
40
41 OM_uint32
gss_unwrap(OM_uint32 * minor_status,const gss_ctx_id_t ctx,const gss_buffer_t input_message_buffer,gss_buffer_t output_message_buffer,int * conf_state,gss_qop_t * qop_state)42 gss_unwrap(OM_uint32 *minor_status,
43 const gss_ctx_id_t ctx,
44 const gss_buffer_t input_message_buffer,
45 gss_buffer_t output_message_buffer,
46 int *conf_state,
47 gss_qop_t *qop_state)
48 {
49 OM_uint32 maj_stat;
50 struct mbuf *m;
51
52 if (!ctx) {
53 *minor_status = 0;
54 return (GSS_S_NO_CONTEXT);
55 }
56
57 MGET(m, M_WAITOK, MT_DATA);
58 if (input_message_buffer->length > MLEN)
59 MCLGET(m, M_WAITOK);
60 m_append(m, input_message_buffer->length, input_message_buffer->value);
61
62 maj_stat = KGSS_UNWRAP(ctx, minor_status, &m, conf_state, qop_state);
63
64 /*
65 * On success, m is the wrapped message, on failure, m is
66 * freed.
67 */
68 if (maj_stat == GSS_S_COMPLETE) {
69 output_message_buffer->length = m_length(m, NULL);
70 output_message_buffer->value =
71 malloc(output_message_buffer->length,
72 M_GSSAPI, M_WAITOK);
73 m_copydata(m, 0, output_message_buffer->length,
74 output_message_buffer->value);
75 m_freem(m);
76 }
77
78 return (maj_stat);
79 }
80
81 OM_uint32
gss_unwrap_mbuf(OM_uint32 * minor_status,const gss_ctx_id_t ctx,struct mbuf ** mp,int * conf_state,gss_qop_t * qop_state)82 gss_unwrap_mbuf(OM_uint32 *minor_status,
83 const gss_ctx_id_t ctx,
84 struct mbuf **mp,
85 int *conf_state,
86 gss_qop_t *qop_state)
87 {
88
89 if (!ctx) {
90 *minor_status = 0;
91 return (GSS_S_NO_CONTEXT);
92 }
93
94 return (KGSS_UNWRAP(ctx, minor_status, mp, conf_state, qop_state));
95 }
96