release/src/router/openssl/crypto/rand/rand_vms.c

   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
  83 static 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$_WSSIZE },
  94                   { 0, 0 }
  95                 };
  96
  97 int RAND_poll(void)
  98         {
  99         long pid, iosb[2];
 100         int status = 0;
 101         struct
 102                 {
 103                 short length, code;
 104                 long *buffer;
 105                 int *retlen;
 106                 } item[32], *pitem;
 107         unsigned char data_buffer[256];
 108         short total_length = 0;
 109         struct items_data_st *pitems_data;
 110
 111         pitems_data = items_data;
 112         pitem = item;
 113
 114         /* Setup */
 115         while (pitems_data->length
 116                 && (total_length + pitems_data->length <= 256))
 117                 {
 118                 pitem->length = pitems_data->length;
 119                 pitem->code = pitems_data->code;
 120                 pitem->buffer = (long *)&data_buffer[total_length];
 121                 pitem->retlen = 0;
 122                 total_length += pitems_data->length;
 123                 pitems_data++;
 124                 pitem++;
 125                 }
 126         pitem->length = pitem->code = 0;
 127
 128         /*
 129          * Scan through all the processes in the system and add entropy with
 130          * results from the processes that were possible to look at.
 131          * However, view the information as only half trustable.
 132          */
 133         pid = -1;                       /* search context */
 134         while ((status = sys$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