From 739862384c31b325c54b0c8154a9e00c722219da Mon Sep 17 00:00:00 2001
From: Richard Levitte <levitte@openssl.org>
Date: Sun, 13 May 2001 10:34:18 +0000
Subject: [PATCH 1/1] A randomizer for OpenVMS, using the statistics that are
 easily reachable.

It's completely untested for now.  To be done in the next few days.
---
 crypto/rand/rand_vms.c | 68 ++++++++++++++++++++++++++++++++++++++----
 1 file changed, 63 insertions(+), 5 deletions(-)

diff --git a/crypto/rand/rand_vms.c b/crypto/rand/rand_vms.c
index 5e2e2b157b..924ef1ba89 100644
--- a/crypto/rand/rand_vms.c
+++ b/crypto/rand/rand_vms.c
@@ -1,4 +1,4 @@
-/* crypto/rand/rand_vms.c */
+/* crypto/rand/rand_vms.c -*- mode:C; c-file-style: "eay" -*- */
 /* Written by Richard Levitte <richard@levitte.org> for the OpenSSL
  * project 2000.
  */
@@ -61,12 +61,70 @@
 
 #if defined(OPENSSL_SYS_VMS)
 
-/* For now, this does nothing.  I'm searching for a good random device,
-   then we'll see. */
+#include <descrip.h>
+#include <jpidef.h>
+#include <ssdef.h>
+#include <starlet.h>
 
+static struct items_data_st
+	{
+	short length, code;	/* length is amount of bytes */
+	} items_data[] =
+		{ { 4, JPI$_BUFIO },
+		  { 4, JPI$_CPUTIM },
+		  { 4, JPI$_DIRIO },
+		  { 8, JPI$_LOGINTIM },
+		  { 4, JPI$_PAGEFLTS },
+		  { 4, JPI$_PID },
+		  { 4, JPI$_WSSIZE },
+		  { 0, 0 }
+		};
+		  
 int RAND_poll(void)
-{
-	return 0;
+	{
+	long pid, iosb[2];
+	int status = 0;
+	struct
+		{
+		short length, code;
+		long *buffer;
+		int *retlen;
+		} item[32], *pitem;
+	unsigned char data_buffer[256];
+	short total_length = 0;
+	struct items_data_st *pitems_data;
+
+	pitems_data = items_data;
+	pitem = item;
+
+	/* Setup */
+	while (pitems_data->length)
+		{
+		pitem->length = pitems_data->length;
+		pitem->code = pitems_data->code;
+		pitem->buffer = (long *)data_buffer[total_length];
+		pitem->retlen = 0;
+		total_length += pitems_data->length;
+		}
+	pitem->length = pitem->code = 0;
+
+	/*
+	 * Scan through all the processes in the system and add entropy with
+	 * results from the processes that were possible to look at.
+	 * However, view the information as only half trustable.
+	 */
+	pid = -1;			/* search context */
+	while ((status = SYS$GETJPIW(8, &pid,  0, item, iosb, 0, 0))
+		!= SS$_NOMOREPROC)
+		{
+		if (status == SS$_NORMAL)
+			{
+			RAND_add(data_buffer, total_length, total_length/2);
+			}
+		}
+	SYS$GETTIM(iosb);
+	RAND_add((unsigned char *)iosb, sizeof(iosb), sizeof(iosb)/2);
+	return 1;
 }
 
 #endif
-- 
2.34.1