source: trunk/sys/libcrypto/others/rand_vms.c @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

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1/* crypto/rand/rand_vms.c -*- mode:C; c-file-style: "eay" -*- */
2/* Written by Richard Levitte <richard@levitte.org> for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 1998-2000 The OpenSSL Project.  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
17 *    the documentation and/or other materials provided with the
18 *    distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 *    software must display the following acknowledgment:
22 *    "This product includes software developed by the OpenSSL Project
23 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 *    endorse or promote products derived from this software without
27 *    prior written permission. For written permission, please contact
28 *    openssl-core@openssl.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 *    nor may "OpenSSL" appear in their names without prior written
32 *    permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 *    acknowledgment:
36 *    "This product includes software developed by the OpenSSL Project
37 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com).  This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <openssl/rand.h>
60#include "rand_lcl.h"
61
62#if defined(OPENSSL_SYS_VMS)
63
64#include <descrip.h>
65#include <jpidef.h>
66#include <ssdef.h>
67#include <starlet.h>
68#ifdef __DECC
69# pragma message disable DOLLARID
70#endif
71
72static struct items_data_st
73        {
74        short length, code;     /* length is amount of bytes */
75        } items_data[] =
76                { { 4, JPI$_BUFIO },
77                  { 4, JPI$_CPUTIM },
78                  { 4, JPI$_DIRIO },
79                  { 8, JPI$_LOGINTIM },
80                  { 4, JPI$_PAGEFLTS },
81                  { 4, JPI$_PID },
82                  { 4, JPI$_WSSIZE },
83                  { 0, 0 }
84                };
85                 
86int RAND_poll(void)
87        {
88        long pid, iosb[2];
89        int status = 0;
90        struct
91                {
92                short length, code;
93                long *buffer;
94                int *retlen;
95                } item[32], *pitem;
96        unsigned char data_buffer[256];
97        short total_length = 0;
98        struct items_data_st *pitems_data;
99
100        pitems_data = items_data;
101        pitem = item;
102
103        /* Setup */
104        while (pitems_data->length
105                && (total_length + pitems_data->length <= 256))
106                {
107                pitem->length = pitems_data->length;
108                pitem->code = pitems_data->code;
109                pitem->buffer = (long *)&data_buffer[total_length];
110                pitem->retlen = 0;
111                total_length += pitems_data->length;
112                pitems_data++;
113                pitem++;
114                }
115        pitem->length = pitem->code = 0;
116
117        /*
118         * Scan through all the processes in the system and add entropy with
119         * results from the processes that were possible to look at.
120         * However, view the information as only half trustable.
121         */
122        pid = -1;                       /* search context */
123        while ((status = sys$getjpiw(0, &pid,  0, item, iosb, 0, 0))
124                != SS$_NOMOREPROC)
125                {
126                if (status == SS$_NORMAL)
127                        {
128                        RAND_add(data_buffer, total_length, total_length/2);
129                        }
130                }
131        sys$gettim(iosb);
132        RAND_add((unsigned char *)iosb, sizeof(iosb), sizeof(iosb)/2);
133        return 1;
134}
135
136#endif
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