xref: /freebsd/lib/libgssapi/gss_wrap_size_limit.c (revision 499fe48de8938d4c7b0a91e20eb6c16db9d55633)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2005 Doug Rabson
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  *	$FreeBSD$
29  */
30 
31 #include <gssapi/gssapi.h>
32 
33 #include "mech_switch.h"
34 #include "context.h"
35 
36 OM_uint32
37 gss_wrap_size_limit(OM_uint32 *minor_status,
38     const gss_ctx_id_t context_handle,
39     int conf_req_flag,
40     gss_qop_t qop_req,
41     OM_uint32 req_output_size,
42     OM_uint32 *max_input_size)
43 {
44 	struct _gss_context *ctx = (struct _gss_context *) context_handle;
45 	struct _gss_mech_switch *m;
46 
47 	*max_input_size = 0;
48 	if (ctx == NULL) {
49 		*minor_status = 0;
50 		return (GSS_S_NO_CONTEXT);
51 	}
52 	m = ctx->gc_mech;
53 
54 	return (m->gm_wrap_size_limit(minor_status, ctx->gc_ctx,
55 		    conf_req_flag, qop_req, req_output_size, max_input_size));
56 }
57