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/**
* \file
* \author Egor Tensin <Egor.Tensin@gmail.com>
* \date 2015
* \copyright This file is licensed under the terms of the MIT License.
* See LICENSE.txt for details.
*/
#pragma once
#include <aesnixx/all.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/program_options.hpp>
#include <cstdlib>
#include <deque>
#include <iostream>
#include <iterator>
#include <istream>
#include <string>
#include <vector>
static std::istream& operator>>(std::istream& is, aesni::Mode& dest)
{
std::string src;
is >> src;
if (boost::iequals(src, "ecb"))
dest = AESNI_ECB;
else if (boost::iequals(src, "cbc"))
dest = AESNI_CBC;
else if (boost::iequals(src, "cfb"))
dest = AESNI_CFB;
else if (boost::iequals(src, "ofb"))
dest = AESNI_OFB;
else if (boost::iequals(src, "ctr"))
dest = AESNI_CTR;
else
throw boost::program_options::validation_error(boost::program_options::validation_error::invalid_option_value, "mode", src);
return is;
}
static std::istream& operator>>(std::istream& is, aesni::Algorithm& dest)
{
std::string src;
is >> src;
if (boost::iequals(src, "aes128"))
dest = AESNI_AES128;
else if (boost::iequals(src, "aes192"))
dest = AESNI_AES192;
else if (boost::iequals(src, "aes256"))
dest = AESNI_AES256;
else
throw boost::program_options::validation_error(boost::program_options::validation_error::invalid_option_value, "algorithm", src);
return is;
}
namespace
{
class CommandLineParser
{
public:
CommandLineParser(const std::string& program_name)
: m_program_name(program_name)
, m_options("Options")
{ }
bool parse_options(int argc, char** argv)
{
namespace po = boost::program_options;
m_options.add_options()
("help,h", "show this message and exit")
("mode,m", po::value<aesni::Mode>(&m_mode)->required(), "set mode of operation")
("algorithm,a", po::value<aesni::Algorithm>(&m_algorithm)->required(), "set algorithm");
po::options_description hidden_options;
hidden_options.add_options()
("positional", po::value<std::vector<std::string>>(&m_args));
po::options_description all_options;
all_options.add(m_options).add(hidden_options);
po::positional_options_description positional_options;
positional_options.add("positional", -1);
po::variables_map vm;
po::store(po::command_line_parser(argc, argv).options(all_options).positional(positional_options).run(), vm);
if (vm.count("help"))
{
print_usage();
return false;
}
po::notify(vm);
return true;
}
void print_usage()
{
std::cout << "Usage: " << m_program_name << " [OPTIONS...] [-- KEY [IV] [PLAINTEXT...]...]\n";
std::cout << m_options << "\n";
}
aesni::Mode get_mode() const
{
return m_mode;
}
aesni::Algorithm get_algorithm() const
{
return m_algorithm;
}
std::deque<std::string> get_args()
{
return { std::make_move_iterator(m_args.begin()), std::make_move_iterator(m_args.end()) };
}
private:
const std::string m_program_name;
boost::program_options::options_description m_options;
aesni::Mode m_mode;
aesni::Algorithm m_algorithm;
std::vector<std::string> m_args;
};
}
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