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/*
*
* Copyright 2018 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License 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.
*
*/
#ifndef GRPC_TEST_CORE_TSI_ALTS_CRYPT_GSEC_TEST_UTIL_H_
#define GRPC_TEST_CORE_TSI_ALTS_CRYPT_GSEC_TEST_UTIL_H_
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/rand.h>
#include <grpc/grpc.h>
/**
* This method returns random bytes of certain length.
*
* - bytes: buffer to hold random bytes.
* - length: length of buffer to be populated.
*/
void gsec_test_random_bytes(uint8_t* bytes, size_t length);
/**
* This method returns an array of random bytes.
*
* - bytes: array to hold random bytes.
* - length: length of array to be populated.
*/
void gsec_test_random_array(uint8_t** bytes, size_t length);
/**
* This method returns a uint32 that's not quite uniformly random, but good
* enough for tests.
*
* - max_length: a max value the returned random number can choose.
*/
uint32_t gsec_test_bias_random_uint32(uint32_t max_length);
/**
* This method copies data from a source to a destination buffer.
*
* - src: a source buffer.
* - des: a destination buffer.
* - length: the length of source buffer to be copied from its beginning.
*/
void gsec_test_copy(const uint8_t* src, uint8_t** des, size_t length);
/**
* This method copies data from a source to a destination buffer, and flips one
* byte in the destination buffer randomly.
*
* - src: a source buffer.
* - des: a destination buffer.
* - length: the length of source buffer to be copied from its beginning.
*/
void gsec_test_copy_and_alter_random_byte(const uint8_t* src, uint8_t** des,
size_t source_len);
/**
* This method compares two grpc_status_code values, and verifies if one string
* is a substring of the other.
*
* - status1: the first grpc_status_code to be compared.
* - status2: the second grpc_status_code to be compared.
* - msg1: a string to be scanned.
* - msg2: a small string to be searched within msg1.
*
* If both checks succeed, the method returns 1 and otherwise, it returns 0.
*/
int gsec_test_expect_compare_code_and_substr(grpc_status_code status1,
grpc_status_code status2,
const char* msg1,
const char* msg2);
#endif // GRPC_TEST_CORE_TSI_ALTS_CRYPT_GSEC_TEST_UTIL_H_ */
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