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Edit File: tls-helpers.ts

/*
 * Copyright 2019 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.
 *
 */

import * as fs from 'fs';

export const CIPHER_SUITES: string | undefined =
  process.env.GRPC_SSL_CIPHER_SUITES;

const DEFAULT_ROOTS_FILE_PATH = process.env.GRPC_DEFAULT_SSL_ROOTS_FILE_PATH;

let defaultRootsData: Buffer | null = null;

export function getDefaultRootsData(): Buffer | null {
  if (DEFAULT_ROOTS_FILE_PATH) {
    if (defaultRootsData === null) {
      defaultRootsData = fs.readFileSync(DEFAULT_ROOTS_FILE_PATH);
    }
    return defaultRootsData;
  }
  return null;
}

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