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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include "aws/s3/private/s3_checksums.h"
#include <aws/testing/aws_test_harness.h>
typedef struct aws_s3_checksum *aws_checksum_new_fn(
struct aws_allocator *allocator,
enum aws_s3_checksum_algorithm algorithm);
static inline int s_verify_checksum_test_case(
struct aws_allocator *allocator,
struct aws_byte_cursor *input,
struct aws_byte_cursor *expected,
aws_checksum_new_fn *new_fn,
enum aws_s3_checksum_algorithm algorithm) {
aws_s3_library_init(allocator);
/* test all possible segmentation lengths from 1 byte at a time to the entire
* input. */
for (size_t i = 1; i < input->len; ++i) {
uint8_t output[128] = {0};
struct aws_byte_buf output_buf = aws_byte_buf_from_array(output, expected->len);
output_buf.len = 0;
struct aws_s3_checksum *checksum = new_fn(allocator, algorithm);
ASSERT_NOT_NULL(checksum);
struct aws_byte_cursor input_cpy = *input;
while (input_cpy.len) {
size_t max_advance = input_cpy.len > i ? i : input_cpy.len;
struct aws_byte_cursor segment = aws_byte_cursor_from_array(input_cpy.ptr, max_advance);
ASSERT_SUCCESS(aws_checksum_update(checksum, &segment));
aws_byte_cursor_advance(&input_cpy, max_advance);
}
size_t truncation_size = checksum->digest_size - expected->len;
ASSERT_SUCCESS(aws_checksum_finalize(checksum, &output_buf, truncation_size));
ASSERT_BIN_ARRAYS_EQUALS(expected->ptr, expected->len, output_buf.buffer, output_buf.len);
aws_checksum_destroy(checksum);
}
aws_s3_library_clean_up();
return AWS_OP_SUCCESS;
}
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