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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include "s2n_test.h"
#include "tls/s2n_connection.h"
#include "utils/s2n_safety.h"
#define TEST_ERRNO S2N_ERR_T_INTERNAL_END
#define SETUP_TEST(conn) \
EXPECT_SUCCESS(s2n_connection_wipe(conn)); \
EXPECT_SUCCESS(s2n_connection_set_blinding(conn, S2N_SELF_SERVICE_BLINDING));
#define EXPECT_BLINDING(conn) \
EXPECT_NOT_EQUAL(s2n_connection_get_delay(conn), 0); \
EXPECT_TRUE(s2n_connection_check_io_status(conn, S2N_IO_CLOSED));
#define EXPECT_NO_BLINDING(conn) \
EXPECT_EQUAL(s2n_connection_get_delay(conn), 0); \
EXPECT_TRUE(s2n_connection_check_io_status(conn, S2N_IO_FULL_DUPLEX));
S2N_RESULT s2n_result_func(bool success)
{
RESULT_ENSURE(success, TEST_ERRNO);
return S2N_RESULT_OK;
}
int s2n_posix_func(bool success)
{
POSIX_ENSURE(success, TEST_ERRNO);
return S2N_SUCCESS;
}
int ptr_value = 0;
int *s2n_ptr_func(bool success)
{
PTR_ENSURE(success, TEST_ERRNO);
return &ptr_value;
}
S2N_RESULT s2n_result_test(struct s2n_connection *conn)
{
WITH_ERROR_BLINDING(conn, RESULT_GUARD(s2n_result_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, RESULT_ENSURE(true, S2N_ERR_UNIMPLEMENTED));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, RESULT_GUARD_POSIX(s2n_posix_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, RESULT_GUARD_PTR(s2n_ptr_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, RESULT_GUARD(s2n_result_func(false)));
return S2N_RESULT_OK;
}
int s2n_posix_test(struct s2n_connection *conn)
{
WITH_ERROR_BLINDING(conn, POSIX_GUARD_RESULT(s2n_result_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, POSIX_ENSURE(true, S2N_ERR_UNIMPLEMENTED));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, POSIX_GUARD(s2n_posix_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, POSIX_GUARD_PTR(s2n_ptr_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, POSIX_GUARD(s2n_posix_func(false)));
return S2N_SUCCESS;
}
int *s2n_ptr_test(struct s2n_connection *conn)
{
WITH_ERROR_BLINDING(conn, PTR_GUARD_RESULT(s2n_result_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, PTR_ENSURE(true, S2N_ERR_UNIMPLEMENTED));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, PTR_GUARD_POSIX(s2n_posix_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, PTR_GUARD(s2n_ptr_func(true)));
EXPECT_NO_BLINDING(conn);
WITH_ERROR_BLINDING(conn, PTR_GUARD(s2n_ptr_func(false)));
return S2N_SUCCESS;
}
int main(int argc, char **argv)
{
BEGIN_TEST();
/* Test: s2n_connection_apply_error_blinding */
{
/* Safety check */
struct s2n_connection *conn = NULL;
EXPECT_ERROR_WITH_ERRNO(s2n_connection_apply_error_blinding(NULL), S2N_ERR_NULL);
EXPECT_OK(s2n_connection_apply_error_blinding(&conn));
conn = s2n_connection_new(S2N_SERVER);
EXPECT_NOT_NULL(conn);
/* No-op for no error */
{
SETUP_TEST(conn);
s2n_errno = S2N_ERR_OK;
EXPECT_OK(s2n_connection_apply_error_blinding(&conn));
EXPECT_NO_BLINDING(conn);
};
/* No-op for retriable errors */
{
SETUP_TEST(conn);
s2n_errno = S2N_ERR_IO_BLOCKED;
EXPECT_OK(s2n_connection_apply_error_blinding(&conn));
EXPECT_NO_BLINDING(conn);
};
/* Closes connection but does not blind for non-blinding errors */
{
SETUP_TEST(conn);
s2n_errno = S2N_ERR_CIPHER_NOT_SUPPORTED;
EXPECT_OK(s2n_connection_apply_error_blinding(&conn));
EXPECT_EQUAL(s2n_connection_get_delay(conn), 0);
EXPECT_TRUE(s2n_connection_check_io_status(conn, S2N_IO_CLOSED));
};
/* Blinds for an average error */
{
SETUP_TEST(conn);
s2n_errno = S2N_ERR_UNIMPLEMENTED;
EXPECT_OK(s2n_connection_apply_error_blinding(&conn));
EXPECT_BLINDING(conn);
};
EXPECT_SUCCESS(s2n_connection_free(conn));
};
/* Test: WITH_ERROR_BLINDING macro
* The WITH_ERROR_BLINDING macro relies on the current method exiting early.
* We can't trigger that behavior in main, so we call separate test methods.
* Each test method verifies that some success cases don't lead to blinding, then
* triggers blinding. Back in main, we verify that the blinding occurred. */
{
struct s2n_connection *conn = s2n_connection_new(S2N_SERVER);
EXPECT_NOT_NULL(conn);
SETUP_TEST(conn);
EXPECT_ERROR_WITH_ERRNO(s2n_result_test(conn), TEST_ERRNO);
EXPECT_BLINDING(conn);
SETUP_TEST(conn);
EXPECT_FAILURE_WITH_ERRNO(s2n_posix_test(conn), TEST_ERRNO);
EXPECT_BLINDING(conn);
SETUP_TEST(conn);
EXPECT_NULL(s2n_ptr_test(conn));
EXPECT_NOT_EQUAL(s2n_connection_get_delay(conn), 0);
EXPECT_BLINDING(conn);
EXPECT_SUCCESS(s2n_connection_free(conn));
};
END_TEST();
}
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