encrypt-config/ConfigFileEncryptor.cpp

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

#include "ConfigFileEncryptor.h"

#include <iostream>
#include <string>

#include "utils/StringUtils.h"

namespace org {
namespace apache {
namespace nifi {
namespace minifi {
namespace encrypt_config {

uint32_t encryptSensitivePropertiesInFile(ConfigFile& config_file, const utils::crypto::Bytes& encryption_key) {
  int num_properties_encrypted = 0;

  for (const auto& property_key : config_file.getSensitiveProperties()) {
    utils::optional<std::string> property_value = config_file.getValue(property_key);
    if (!property_value) { continue; }

    std::string encryption_type_key = property_key + ".protected";
    utils::optional<std::string> encryption_type = config_file.getValue(encryption_type_key);

    if (!encryption_type || encryption_type->empty() || *encryption_type == "plaintext") {
      std::string encrypted_property_value = utils::crypto::encrypt(*property_value, encryption_key);

      config_file.update(property_key, encrypted_property_value);

      if (encryption_type) {
        config_file.update(encryption_type_key, utils::crypto::EncryptionType::name());
      } else {
        config_file.insertAfter(property_key, encryption_type_key, utils::crypto::EncryptionType::name());
      }

      std::cout << "Encrypted property: " << property_key << '\n';
      ++num_properties_encrypted;
    }
  }

  return num_properties_encrypted;
}

}  // namespace encrypt_config
}  // namespace minifi
}  // namespace nifi
}  // namespace apache
}  // namespace org