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// Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "AES tools" project.
// For details, see https://github.com/egor-tensin/aes-tools.
// Distributed under the MIT License.
#pragma once
#include "data_parsers.hpp"
#include "helpers/command_line.hpp"
#include <aesxx/all.hpp>
#include <boost/filesystem.hpp>
#include <boost/program_options.hpp>
#include <ostream>
#include <string>
#include <utility>
namespace
{
class FileSettings : public command_line::SettingsParser
{
public:
aes::Algorithm algorithm = AES_AES128;
aes::Mode mode = AES_ECB;
std::string input_path;
std::string output_path;
std::string key;
std::string iv;
explicit FileSettings(const std::string& argv0)
: SettingsParser{argv0}
{
visible.add_options()
("algorithm,a",
boost::program_options::value<aes::Algorithm>(&algorithm)
->required()
->value_name("NAME"),
"set algorithm")
("mode,m",
boost::program_options::value<aes::Mode>(&mode)
->required()
->value_name("MODE"),
"set mode of operation")
("key,k",
boost::program_options::value<std::string>(&key)
->required()
->value_name("KEY"),
"set encryption key")
("iv,v",
boost::program_options::value<std::string>(&iv)
->value_name("BLOCK"),
"set initialization vector")
("input,i",
boost::program_options::value<std::string>(&input_path)
->required()
->value_name("PATH"),
"set input file path")
("output,o",
boost::program_options::value<std::string>(&output_path)
->required()
->value_name("PATH"),
"set output file path");
}
const char* get_short_description() const override
{
return "[-h|--help] [-a|--algorithm NAME] [-m|--mode MODE]"
" [-k|--key KEY] [-v|--iv BLOCK]"
" [-i|--input PATH] [-o|--output PATH]";
}
void parse(int argc, char** argv) override
{
SettingsParser::parse(argc, argv);
if (aes::mode_requires_init_vector(mode) && iv.empty())
{
throw boost::program_options::error{
"an initialization vector is required for the selected mode of operation"};
}
}
};
}
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