libcryfs/src/cryfs/impl/config/CryConfigCreator.h

#pragma once
#ifndef MESSMER_CRYFS_SRC_CONFIG_CRYCONFIGCREATOR_H
#define MESSMER_CRYFS_SRC_CONFIG_CRYCONFIGCREATOR_H

#include <cpp-utils/pointer/unique_ref.h>
#include <cpp-utils/random/RandomGenerator.h>
#include <cpp-utils/io/Console.h>
#include <cryfs/impl/localstate/LocalStateDir.h>
#include "CryConfig.h"
#include "CryConfigConsole.h"

namespace cryfs {
    class CryConfigCreator final {
    public:
        CryConfigCreator(cpputils::RandomGenerator &encryptionKeyGenerator, LocalStateDir localStateDir);
        CryConfigCreator(CryConfigCreator &&rhs) = default;

        struct ConfigCreateResult {
            CryConfig config;
            uint32_t myClientId;
        };

        ConfigCreateResult create(const boost::optional<std::string> &cipherFromCommandLine, const boost::optional<uint32_t> &blocksizeBytesFromCommandLine, const boost::optional<bool> &missingBlockIsIntegrityViolationFromCommandLine, bool allowReplacedFilesystem);
    private:
        std::string _generateCipher(const boost::optional<std::string> &cipherFromCommandLine);
        std::string _generateEncKey(const std::string &cipher);
        std::string _generateRootBlobId();
        uint32_t _generateBlocksizeBytes(const boost::optional<uint32_t> &blocksizeBytesFromCommandLine);
        CryConfig::FilesystemID _generateFilesystemID();
        boost::optional<uint32_t> _generateExclusiveClientId(const boost::optional<bool> &missingBlockIsIntegrityViolationFromCommandLine, uint32_t myClientId);
        bool _generateMissingBlockIsIntegrityViolation(const boost::optional<bool> &missingBlockIsIntegrityViolationFromCommandLine);

        CryConfigConsole _configConsole;
        cpputils::RandomGenerator &_encryptionKeyGenerator;
        LocalStateDir _localStateDir;

        DISALLOW_COPY_AND_ASSIGN(CryConfigCreator);
    };
}

#endif