xref: /freebsd/sys/kgssapi/gss_wrap.c (revision 734e82fe33aa764367791a7d603b383996c6b40b)
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/cdefs.h>
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_wrap(OM_uint32 *minor_status,
44     const gss_ctx_id_t ctx,
45     int conf_req_flag,
46     gss_qop_t qop_req,
47     const gss_buffer_t input_message_buffer,
48     int *conf_state,
49     gss_buffer_t output_message_buffer)
50 {
51 	OM_uint32 maj_stat;
52 	struct mbuf *m;
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 (input_message_buffer->length > MLEN)
61 		MCLGET(m, M_WAITOK);
62 	m_append(m, input_message_buffer->length, input_message_buffer->value);
63 
64 	maj_stat = KGSS_WRAP(ctx, minor_status, conf_req_flag, qop_req,
65 	    &m, conf_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 
84 OM_uint32
85 gss_wrap_mbuf(OM_uint32 *minor_status, const gss_ctx_id_t ctx,
86     int conf_req_flag, gss_qop_t qop_req, struct mbuf **mp, int *conf_state)
87 {
88 
89 	if (!ctx) {
90 		*minor_status = 0;
91 		return (GSS_S_NO_CONTEXT);
92 	}
93 
94 	return (KGSS_WRAP(ctx, minor_status, conf_req_flag, qop_req,
95 		mp, conf_state));
96 }
97