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
72/* Use 32-bit pointers almost everywhere.  Define the type to which to
73 * cast a pointer passed to an external function.
74 */
75#if __INITIAL_POINTER_SIZE == 64
76# define PTR_T __void_ptr64
77# pragma pointer_size save
78# pragma pointer_size 32
79#else /* __INITIAL_POINTER_SIZE == 64 */
80# define PTR_T void *
81#endif /* __INITIAL_POINTER_SIZE == 64 [else] */
82
83static struct items_data_st
84	{
85	short length, code;	/* length is amount of bytes */
86	} items_data[] =
87		{ { 4, JPI$_BUFIO },
88		  { 4, JPI$_CPUTIM },
89		  { 4, JPI$_DIRIO },
90		  { 8, JPI$_LOGINTIM },
91		  { 4, JPI$_PAGEFLTS },
92		  { 4, JPI$_PID },
93		  { 4, JPI$_WSSIZE },
94		  { 0, 0 }
95		};
96
97int RAND_poll(void)
98	{
99	long pid, iosb[2];
100	int status = 0;
101	struct
102		{
103		short length, code;
104		long *buffer;
105		int *retlen;
106		} item[32], *pitem;
107	unsigned char data_buffer[256];
108	short total_length = 0;
109	struct items_data_st *pitems_data;
110
111	pitems_data = items_data;
112	pitem = item;
113
114	/* Setup */
115	while (pitems_data->length
116		&& (total_length + pitems_data->length <= 256))
117		{
118		pitem->length = pitems_data->length;
119		pitem->code = pitems_data->code;
120		pitem->buffer = (long *)&data_buffer[total_length];
121		pitem->retlen = 0;
122		total_length += pitems_data->length;
123		pitems_data++;
124		pitem++;
125		}
126	pitem->length = pitem->code = 0;
127
128	/*
129	 * Scan through all the processes in the system and add entropy with
130	 * results from the processes that were possible to look at.
131	 * However, view the information as only half trustable.
132	 */
133	pid = -1;			/* search context */
134	while ((status = sys$getjpiw(0, &pid,  0, item, iosb, 0, 0))
135		!= SS$_NOMOREPROC)
136		{
137		if (status == SS$_NORMAL)
138			{
139			RAND_add( (PTR_T)data_buffer, total_length,
140			 total_length/2);
141			}
142		}
143	sys$gettim(iosb);
144	RAND_add( (PTR_T)iosb, sizeof(iosb), sizeof(iosb)/2);
145	return 1;
146}
147
148#endif
149