icinga2/lib/remote/base64.cpp

62 lines
2.7 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2016 Icinga Development Team (https://www.icinga.org/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "remote/base64.hpp"
#include <boost/archive/iterators/base64_from_binary.hpp>
#include <boost/archive/iterators/binary_from_base64.hpp>
#include <boost/archive/iterators/insert_linebreaks.hpp>
#include <boost/archive/iterators/transform_width.hpp>
#include <boost/archive/iterators/ostream_iterator.hpp>
#include <sstream>
using namespace icinga;
const String base64_padding[] = {"", "==", "="};
String Base64::Encode(const String& data)
{
typedef boost::archive::iterators::base64_from_binary <boost::archive::iterators::transform_width<const char *, 6, 8> > base64_encode;
std::ostringstream msgbuf;
std::copy(base64_encode(data.CStr()), base64_encode(data.CStr() + data.GetLength()), std::ostream_iterator<char>(msgbuf));
msgbuf << base64_padding[data.GetLength() % 3];
return msgbuf.str();
}
String Base64::Decode(const String& data)
{
typedef boost::archive::iterators::transform_width<boost::archive::iterators::binary_from_base64<const char *>, 8, 6> base64_decode;
String::SizeType size = data.GetLength();
if (size && data[size - 1] == '=') {
--size;
if (size && data[size - 1] == '=')
--size;
}
if (size == 0)
return String();
std::ostringstream msgbuf;
std::copy(base64_decode(data.CStr()), base64_decode(data.CStr() + size), std::ostream_iterator<char>(msgbuf));
return msgbuf.str();
}