1 files changed, 0 insertions, 166 deletions
diff --git a/winsup/cygwin/fhandler_random.cc b/winsup/cygwin/fhandler_random.cc
deleted file mode 100644
index 99d12c4..0000000
--- a/winsup/cygwin/fhandler_random.cc
+++ /dev/null
@@ -1,166 +0,0 @@
-/* fhandler_dev_random.cc: code to access /dev/random and /dev/urandom
-
-   Copyright 2000 Cygnus Solutions.
-
-   Written by Corinna Vinschen (vinschen@cygnus.com)
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-#include "winsup.h"
-#include <errno.h>
-#include <limits.h>
-#include "cygerrno.h"
-#include "fhandler.h"
-
-#define RANDOM   8
-#define URANDOM  9
-
-#define PSEUDO_MULTIPLIER       (6364136223846793005LL)
-#define PSEUDO_SHIFTVAL         (21)
-
-fhandler_dev_random::fhandler_dev_random (const char *name, int nunit)
-  : fhandler_base (FH_RANDOM, name),
-    unit(nunit),
-    crypt_prov((HCRYPTPROV)NULL)
-{
-  set_cb (sizeof *this);
-}
-
-int
-fhandler_dev_random::open (const char *, int flags, mode_t)
-{
-  set_flags (flags);
-  return 1;
-}
-
-BOOL
-fhandler_dev_random::crypt_gen_random (void *ptr, size_t len)
-{
-  if (!crypt_prov
-      && !CryptAcquireContext (&crypt_prov, NULL, MS_DEF_PROV, PROV_RSA_FULL,
-                               CRYPT_VERIFYCONTEXT | CRYPT_MACHINE_KEYSET)
-      && !CryptAcquireContext (&crypt_prov, NULL, MS_DEF_PROV, PROV_RSA_FULL,
-                               CRYPT_VERIFYCONTEXT | CRYPT_MACHINE_KEYSET
-                               | CRYPT_NEWKEYSET))
-    {
-      debug_printf ("%E = CryptAquireContext()");
-      return FALSE;
-    }
-  if (!CryptGenRandom (crypt_prov, len, (BYTE *)ptr))
-    {
-      debug_printf ("%E = CryptGenRandom()");
-      return FALSE;
-    }
-  return TRUE;
-}
-
-int
-fhandler_dev_random::pseudo_write (const void *ptr, size_t len)
-{
-  /* Use buffer to mess up the pseudo random number generator. */
-  for (size_t i = 0; i < len; ++i)
-    pseudo = (pseudo + ((unsigned char *)ptr)[i]) * PSEUDO_MULTIPLIER + 1;
-  return len;
-}
-
-int
-fhandler_dev_random::write (const void *ptr, size_t len)
-{
-  if (!len)
-    return 0;
-  if (!ptr)
-    {
-      set_errno (EINVAL);
-      return -1;
-    }
-
-  /* Limit len to a value <= 512 since we don't want to overact.
-     Copy to local buffer because CryptGenRandom violates const. */
-  unsigned char buf[512];
-  size_t limited_len = len <= 512 ? len : 512;
-  memcpy (buf, ptr, limited_len);
-
-  /* Mess up system entropy source. Return error if device is /dev/random. */
-  if (!crypt_gen_random (buf, limited_len) && unit == RANDOM)
-    {
-      __seterrno ();
-      return -1;
-    }
-  /* Mess up the pseudo random number generator. */
-  pseudo_write (buf, limited_len);
-  return len;
-}
-
-int
-fhandler_dev_random::pseudo_read (void *ptr, size_t len)
-{
-  /* Use pseudo random number generator as fallback entropy source.
-     This multiplier was obtained from Knuth, D.E., "The Art of
-     Computer Programming," Vol 2, Seminumerical Algorithms, Third
-     Edition, Addison-Wesley, 1998, p. 106 (line 26) & p. 108 */
-  for (size_t i = 0; i < len; ++i)
-    {
-      pseudo = pseudo * PSEUDO_MULTIPLIER + 1;
-      ((unsigned char *)ptr)[i] = (pseudo >> PSEUDO_SHIFTVAL) & UCHAR_MAX;
-    }
-  return len;
-}
-
-int
-fhandler_dev_random::read (void *ptr, size_t len)
-{
-  if (!len)
-    return 0;
-  if (!ptr)
-    {
-      set_errno (EINVAL);
-      return -1;
-    }
-
-  if (crypt_gen_random (ptr, len))
-    return len;
-  /* If device is /dev/urandom, use pseudo number generator as fallback.
-     Don't do this for /dev/random since it's intended for uses that need
-     very high quality randomness. */
-  if (unit == URANDOM)
-    return pseudo_read (ptr, len);
-
-  __seterrno ();
-  return -1;
-}
-
-off_t
-fhandler_dev_random::lseek (off_t, int)
-{
-  return 0;
-}
-
-int
-fhandler_dev_random::close (void)
-{
-  if (crypt_prov)
-    while (!CryptReleaseContext (crypt_prov, 0)
-           && GetLastError () == ERROR_BUSY)
-      Sleep(10);
-  return 0;
-}
-
-int
-fhandler_dev_random::dup (fhandler_base *child)
-{
-  fhandler_dev_random *fhr = (fhandler_dev_random *) child;
-  fhr->unit = unit;
-  fhr->crypt_prov = (HCRYPTPROV)NULL;
-  return 0;
-}
-
-void
-fhandler_dev_random::dump ()
-{
-  paranoid_printf("here, fhandler_dev_random");
-}
-