Add OSSL_NELEM macro.

[openssl.git] / crypto / rand / rand_vms.c

diff --git a/crypto/rand/rand_vms.c b/crypto/rand/rand_vms.c
index 5e2e2b157bda7f4ae0642633375f3b49c1c37143..a7179a4ba121beb2f89d4a7cf390148591ead23b 100644 (file)
--- a/crypto/rand/rand_vms.c
+++ b/crypto/rand/rand_vms.c
@@ -1,6 +1,7 @@
-/* crypto/rand/rand_vms.c */
-/* Written by Richard Levitte <richard@levitte.org> for the OpenSSL
- * project 2000.
+/* crypto/rand/rand_vms.c -*- mode:C; c-file-style: "eay" -*- */
+/*
+ * Written by Richard Levitte <richard@levitte.org> for the OpenSSL project
+ * 2000.
  */
 /* ====================================================================
  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
@@ -10,7 +11,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -61,12 +62,98 @@
 
 #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>
+# ifdef __DECC
+#  pragma message disable DOLLARID
+# endif
+
+/*
+ * Use 32-bit pointers almost everywhere.  Define the type to which to cast a
+ * pointer passed to an external function.
+ */
+# if __INITIAL_POINTER_SIZE == 64
+#  define PTR_T __void_ptr64
+#  pragma pointer_size save
+#  pragma pointer_size 32
+# else                          /* __INITIAL_POINTER_SIZE == 64 */
+#  define PTR_T void *
+# endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
+
+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 && (total_length + pitems_data->length <= 256)) {
+        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;
+        pitems_data++;
+        pitem ++;
+    }
+    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$getjpiw(0, &pid, 0, item, iosb, 0, 0))
+           != SS$_NOMOREPROC) {
+        if (status == SS$_NORMAL) {
+            RAND_add((PTR_T) data_buffer, total_length, total_length / 2);
+        }
+    }
+    sys$gettim(iosb);
+    RAND_add((PTR_T) iosb, sizeof(iosb), sizeof(iosb) / 2);
+    return 1;
 }
 
 #endif