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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/rand/rand_vms.c
2 * Copyright 2001-2017 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 #if defined(OPENSSL_SYS_VMS)
13 # include <openssl/rand.h>
14 # include "rand_lcl.h"
21 # pragma message disable DOLLARID
24 # ifndef OPENSSL_RAND_SEED_OS
25 # error "Unsupported seeding method configured; must be os"
29 * Use 32-bit pointers almost everywhere. Define the type to which to cast a
30 * pointer passed to an external function.
32 # if __INITIAL_POINTER_SIZE == 64
33 # define PTR_T __void_ptr64
34 # pragma pointer_size save
35 # pragma pointer_size 32
40 static struct items_data_st
{
41 short length
, code
; /* length is number of bytes */
47 {8, JPI$_LAST_LOGIN_I
},
57 int RAND_poll_ex(RAND_poll_cb rand_add
, void *arg
)
59 /* determine the number of items in the JPI array */
60 struct items_data_st item_entry
;
61 int item_entry_count
= OSSL_NELEM(items_data
);
62 /* Create the JPI itemlist array to hold item_data content */
67 } item
[item_entry_count
], *pitem
;
68 struct items_data_st
*pitems_data
;
69 int data_buffer
[(item_entry_count
* 2) + 4]; /* 8 bytes per entry max */
77 /* Setup itemlist for GETJPI */
78 pitems_data
= items_data
;
79 for (pitem
= item
; pitems_data
->length
!= 0; pitem
++) {
80 pitem
->length
= pitems_data
->length
;
81 pitem
->code
= pitems_data
->code
;
82 pitem
->buffer
= &data_buffer
[total_length
];
84 /* total_length is in longwords */
85 total_length
+= pitems_data
->length
/ 4;
88 pitem
->length
= pitem
->code
= 0;
90 /* Fill data_buffer with various info bits from this process */
91 if (sys$
getjpiw(EFN$C_ENF
, NULL
, NULL
, item
, &iosb
, 0, 0) != SS$_NORMAL
)
94 /* Now twist that data to seed the SSL random number init */
95 for (i
= 0; i
< total_length
; i
++) {
96 sys$
gettim((struct _generic_64
*)&sys_time
[0]);
97 srand(sys_time
[0] * data_buffer
[0] * data_buffer
[1] + i
);
99 if (i
== (total_length
- 1)) { /* for JPI$_FINALEXC */
100 ptr
= &data_buffer
[i
];
101 for (j
= 0; j
< 4; j
++) {
102 data_buffer
[i
+ j
] = ptr
[j
];
103 /* OK to use rand() just to scramble the seed */
104 data_buffer
[i
+ j
] ^= (sys_time
[0] ^ rand());
108 /* OK to use rand() just to scramble the seed */
109 data_buffer
[i
] ^= (sys_time
[0] ^ rand());
113 total_length
+= (tmp_length
- 1);
115 /* size of seed is total_length*4 bytes (64bytes) */
116 rand_add(arg
, (PTR_T
)data_buffer
, total_length
* 4, total_length
* 2);