nss/tst-nss-hash.c

   1 /* Test __nss_hash
   2    Copyright (C) 2022-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <support/support.h>
  20 #include <support/check.h>
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <stdlib.h>
  24 #include <nss.h>
  25 #include <simple-nss-hash.h>
  26
  27 uint32_t __nss_hash (const void *__key, size_t __length);
  28
  29 static int
  30 do_fill_tests (size_t len, int fill)
  31 {
  32   uint32_t expec, res;
  33   char buf[len];
  34   memset (buf, fill, len);
  35
  36   expec = __simple_nss_hash (buf, len);
  37   res = __nss_hash (buf, len);
  38   if (expec != res)
  39     FAIL_EXIT1 ("FAIL: fill(%d) (%zu), %x != %x\n", fill, len, expec, res);
  40
  41   return 0;
  42 }
  43
  44 static int
  45 do_rand_tests (size_t len)
  46 {
  47   uint32_t expec, res;
  48   size_t i;
  49   char buf[len];
  50   for (i = 0; i < len; ++i)
  51     buf[i] = random ();
  52
  53   expec = __simple_nss_hash (buf, len);
  54   res = __nss_hash (buf, len);
  55   if (expec != res)
  56     FAIL_EXIT1 ("FAIL: random (%zu), %x != %x\n", len, expec, res);
  57
  58   return 0;
  59 }
  60
  61 static int
  62 do_test (void)
  63 {
  64   size_t i, j;
  65   for (i = 0; i < 100; ++i)
  66     {
  67       for (j = 0; j < 8192; ++j)
  68         {
  69           if (do_rand_tests (i))
  70             return 1;
  71
  72           if (do_fill_tests (i, -1) || do_fill_tests (i, 1)
  73               || do_fill_tests (i, 0x80) || do_fill_tests (i, 0x88))
  74             return 1;
  75         }
  76     }
  77   return 0;
  78 }
  79
  80 #include <support/test-driver.c>