1/*-
2 * Copyright (c) 2007 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
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 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33/* $FreeBSD$ */
34/* $Id: gss_pseudo_random.c 20053 2007-01-24 01:31:35Z lha $ */
35
36#include <gssapi/gssapi.h>
37
38#include "mech_switch.h"
39#include "context.h"
40#include "utils.h"
41
42OM_uint32
43gss_pseudo_random(OM_uint32 *minor_status,
44		  gss_ctx_id_t context,
45		  int prf_key,
46		  const gss_buffer_t prf_in,
47		  ssize_t desired_output_len,
48		  gss_buffer_t prf_out)
49{
50    struct _gss_context *ctx = (struct _gss_context *) context;
51    struct _gss_mech_switch *m = ctx->gc_mech;
52    OM_uint32 major_status;
53
54    _gss_buffer_zero(prf_out);
55    *minor_status = 0;
56
57    if (ctx == NULL) {
58	*minor_status = 0;
59	return GSS_S_NO_CONTEXT;
60    }
61
62    if (m->gm_pseudo_random == NULL)
63	return GSS_S_UNAVAILABLE;
64
65    major_status = (*m->gm_pseudo_random)(minor_status, ctx->gc_ctx,
66					  prf_key, prf_in, desired_output_len,
67					  prf_out);
68    if (major_status != GSS_S_COMPLETE)
69	    _gss_mg_error(m, major_status, *minor_status);
70
71    return major_status;
72}
73