xref: /freebsd/sys/kgssapi/gss_verify_mic.c (revision f39bffc62c1395bde25d152c7f68fdf7cbaab414)
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 
44 OM_uint32
45 gss_verify_mic(OM_uint32 *minor_status,
46     const gss_ctx_id_t ctx,
47     const gss_buffer_t message_buffer,
48     const gss_buffer_t token_buffer,
49     gss_qop_t *qop_state)
50 {
51 	OM_uint32 maj_stat;
52 	struct mbuf *m, *mic;
53 
54 	if (!ctx) {
55 		*minor_status = 0;
56 		return (GSS_S_NO_CONTEXT);
57 	}
58 
59 	MGET(m, M_WAITOK, MT_DATA);
60 	if (message_buffer->length > MLEN)
61 		MCLGET(m, M_WAITOK);
62 	m_append(m, message_buffer->length, message_buffer->value);
63 
64 	MGET(mic, M_WAITOK, MT_DATA);
65 	if (token_buffer->length > MLEN)
66 		MCLGET(mic, M_WAITOK);
67 	m_append(mic, token_buffer->length, token_buffer->value);
68 
69 	maj_stat = KGSS_VERIFY_MIC(ctx, minor_status, m, mic, qop_state);
70 
71 	m_freem(m);
72 	m_freem(mic);
73 
74 	return (maj_stat);
75 }
76 
77 OM_uint32
78 gss_verify_mic_mbuf(OM_uint32 *minor_status, const gss_ctx_id_t ctx,
79     struct mbuf *m, struct mbuf *mic, gss_qop_t *qop_state)
80 {
81 
82 	if (!ctx) {
83 		*minor_status = 0;
84 		return (GSS_S_NO_CONTEXT);
85 	}
86 
87 	return (KGSS_VERIFY_MIC(ctx, minor_status, m, mic, qop_state));
88 }
89 
90