1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2007 Kungliga Tekniska H��gskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
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 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35/* $FreeBSD$ */
36/* $Id: gss_pseudo_random.c 20053 2007-01-24 01:31:35Z lha $ */
37
38#include <gssapi/gssapi.h>
39
40#include "mech_switch.h"
41#include "context.h"
42#include "utils.h"
43
44OM_uint32
45gss_pseudo_random(OM_uint32 *minor_status,
46		  gss_ctx_id_t context,
47		  int prf_key,
48		  const gss_buffer_t prf_in,
49		  ssize_t desired_output_len,
50		  gss_buffer_t prf_out)
51{
52    struct _gss_context *ctx = (struct _gss_context *) context;
53    struct _gss_mech_switch *m;
54    OM_uint32 major_status;
55
56    _gss_buffer_zero(prf_out);
57    *minor_status = 0;
58
59    if (ctx == NULL) {
60	*minor_status = 0;
61	return GSS_S_NO_CONTEXT;
62    }
63    m = ctx->gc_mech;
64
65    if (m->gm_pseudo_random == NULL)
66	return GSS_S_UNAVAILABLE;
67
68    major_status = (*m->gm_pseudo_random)(minor_status, ctx->gc_ctx,
69					  prf_key, prf_in, desired_output_len,
70					  prf_out);
71    if (major_status != GSS_S_COMPLETE)
72	    _gss_mg_error(m, major_status, *minor_status);
73
74    return major_status;
75}
76