Openssl 1.1.0h

2018-04-02 22:33:38 +09:00
commit 1fd4faa81c
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+/*
+ * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/*
+ * Modified by VMS Software, Inc (2016)
+ *    Eliminate looping through all processes (performance)
+ *    Add additional randomizations using rand() function
+ */
+
+#include <openssl/rand.h>
+#include "rand_lcl.h"
+
+#if defined(OPENSSL_SYS_VMS)
+# include <descrip.h>
+# include <jpidef.h>
+# include <ssdef.h>
+# include <starlet.h>
+# include <efndef>
+# 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 number of bytes */
+} items_data[] = {
+    {4, JPI$_BUFIO},
+    {4, JPI$_CPUTIM},
+    {4, JPI$_DIRIO},
+    {4, JPI$_IMAGECOUNT},
+    {8, JPI$_LAST_LOGIN_I},
+    {8, JPI$_LOGINTIM},
+    {4, JPI$_PAGEFLTS},
+    {4, JPI$_PID},
+    {4, JPI$_PPGCNT},
+    {4, JPI$_WSPEAK},
+    {4, JPI$_FINALEXC},
+    {0, 0}                      /* zero terminated */
+};
+
+int RAND_poll(void)
+{
+
+    /* determine the number of items in the JPI array */
+
+    struct items_data_st item_entry;
+    int item_entry_count = sizeof(items_data)/sizeof(item_entry);
+
+    /* Create the JPI itemlist array to hold item_data content */
+
+    struct {
+        short length, code;
+        int *buffer;
+        int *retlen;
+    } item[item_entry_count], *pitem; /* number of entries in items_data */
+
+    struct items_data_st *pitems_data;
+    int data_buffer[(item_entry_count*2)+4]; /* 8 bytes per entry max */
+    int iosb[2];
+    int sys_time[2];
+    int *ptr;
+    int i, j ;
+    int tmp_length   = 0;
+    int total_length = 0;
+
+    pitems_data = items_data;
+    pitem = item;
+
+
+    /* Setup itemlist for GETJPI */
+    while (pitems_data->length) {
+        pitem->length = pitems_data->length;
+        pitem->code   = pitems_data->code;
+        pitem->buffer = &data_buffer[total_length];
+        pitem->retlen = 0;
+        /* total_length is in longwords */
+        total_length += pitems_data->length/4;
+        pitems_data++;
+        pitem ++;
+    }
+    pitem->length = pitem->code = 0;
+
+    /* Fill data_buffer with various info bits from this process */
+    /* and twist that data to seed the SSL random number init    */
+
+    if (sys$getjpiw(EFN$C_ENF, NULL, NULL, item, &iosb, 0, 0) == SS$_NORMAL) {
+        for (i = 0; i < total_length; i++) {
+            sys$gettim((struct _generic_64 *)&sys_time[0]);
+            srand(sys_time[0] * data_buffer[0] * data_buffer[1] + i);
+
+            if (i == (total_length - 1)) { /* for JPI$_FINALEXC */
+                ptr = &data_buffer[i];
+                for (j = 0; j < 4; j++) {
+                    data_buffer[i + j] = ptr[j];
+                    /* OK to use rand() just to scramble the seed */
+                    data_buffer[i + j] ^= (sys_time[0] ^ rand());
+                    tmp_length++;
+                }
+            } else {
+                /* OK to use rand() just to scramble the seed */
+                data_buffer[i] ^= (sys_time[0] ^ rand());
+            }
+        }
+
+        total_length += (tmp_length - 1);
+
+        /* size of seed is total_length*4 bytes (64bytes) */
+        RAND_add((PTR_T) data_buffer, total_length*4, total_length * 2);
+    } else {
+        return 0;
+    }
+
+    return 1;
+}
+
+#endif