mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 05:00:15 +00:00
79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/* Check two binary blobs for equality.
|
|
Copyright (C) 2018-2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <support/check.h>
|
|
#include <support/support.h>
|
|
#include <support/xmemstream.h>
|
|
|
|
static void
|
|
report_length (const char *what, unsigned long int length, const char *expr)
|
|
{
|
|
printf (" %s %lu bytes (from %s)\n", what, length, expr);
|
|
}
|
|
|
|
static void
|
|
report_blob (const char *what, const unsigned char *blob,
|
|
unsigned long int length, const char *expr)
|
|
{
|
|
if (blob == NULL && length > 0)
|
|
printf (" %s (evaluated from %s): NULL\n", what, expr);
|
|
else if (length > 0)
|
|
{
|
|
printf (" %s (evaluated from %s):\n", what, expr);
|
|
char *quoted = support_quote_blob (blob, length);
|
|
printf (" \"%s\"\n", quoted);
|
|
free (quoted);
|
|
|
|
fputs (" ", stdout);
|
|
for (unsigned long i = 0; i < length; ++i)
|
|
printf (" %02X", blob[i]);
|
|
putc ('\n', stdout);
|
|
}
|
|
}
|
|
|
|
void
|
|
support_test_compare_blob (const void *left, unsigned long int left_length,
|
|
const void *right, unsigned long int right_length,
|
|
const char *file, int line,
|
|
const char *left_expr, const char *left_len_expr,
|
|
const char *right_expr, const char *right_len_expr)
|
|
{
|
|
/* No differences are possible if both lengths are null. */
|
|
if (left_length == 0 && right_length == 0)
|
|
return;
|
|
|
|
if (left_length != right_length || left == NULL || right == NULL
|
|
|| memcmp (left, right, left_length) != 0)
|
|
{
|
|
support_record_failure ();
|
|
printf ("%s:%d: error: blob comparison failed\n", file, line);
|
|
if (left_length == right_length)
|
|
printf (" blob length: %lu bytes\n", left_length);
|
|
else
|
|
{
|
|
report_length ("left length: ", left_length, left_len_expr);
|
|
report_length ("right length:", right_length, right_len_expr);
|
|
}
|
|
report_blob ("left", left, left_length, left_expr);
|
|
report_blob ("right", right, right_length, right_expr);
|
|
}
|
|
}
|