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lib/util: Add test of mem_equal_const_time()

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Ensure that it gives the correct results for comparing two memory
regions.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Joseph Sutton 2022-05-11 14:06:22 +12:00 committed by Andrew Bartlett
parent a80d783a34
commit 222e1afc6f
1 changed files with 22 additions and 0 deletions
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22
lib/util/tests/util.c
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@ -426,6 +426,25 @@ done:
return ret;
}
static bool test_mem_equal_const_time(struct torture_context *tctx)
{
const char *test_string = "abcdabcd";
torture_assert(tctx, mem_equal_const_time("", "", 0),
"zero-length comparison failed");
torture_assert(tctx, mem_equal_const_time(test_string, test_string, 8),
"comparison with equal pointers failed");
torture_assert(tctx, mem_equal_const_time(test_string, test_string + 4, 4),
"comparison with non-equal pointers failed");
torture_assert(tctx, !mem_equal_const_time("abcd", "efgh", 4),
"comparison with different values failed");
return true;
}
static bool test_smb_strtoul_errno_check(struct torture_context *tctx)
{
const char *number = "123";
@ -608,6 +627,9 @@ struct torture_suite *torture_local_util(TALLOC_CTX *mem_ctx)
torture_suite_add_simple_test(suite,
"directory_create_or_exist",
test_directory_create_or_exist);
torture_suite_add_simple_test(suite,
"mem_equal_const_time",
test_mem_equal_const_time);
torture_suite_add_simple_test(suite,
"smb_strtoul(l) errno",
test_smb_strtoul_errno_check);