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/*
* Copyright (c) 2000 - 2015 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed 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
*
*
* @file BufferHandler.cpp
* @author Maciej Karpiuk (m.karpiuk2@samsung.com)
* @version 1.0
* @brief BufferHandler class implementation.
*/
#include <string>
#include <algorithm>
#include <cctype>
#include <BufferHandler.h>
#include <xml-utils.h>
#include <base64.h>
namespace {
const char *const XML_ATTR_IV = "IV";
const char *const XML_ATTR_TAG = "tag";
}
namespace CKM {
namespace InitialValues {
BufferHandler::BufferHandler(EncodingType type) : m_encoding(type) {}
BufferHandler::~BufferHandler() {}
void BufferHandler::Start(const XML::Parser::Attributes &attr)
{
if (attr.find(XML_ATTR_IV) != attr.end()) {
std::string IVstring = attr.at(XML_ATTR_IV);
Base64Decoder base64;
base64.reset();
base64.append(RawBuffer(IVstring.begin(), IVstring.end()));
base64.finalize();
m_encryptionParams.iv = base64.get();
}
if (attr.find(XML_ATTR_TAG) != attr.end()) {
std::string tag = attr.at(XML_ATTR_TAG);
Base64Decoder base64;
base64.reset();
base64.append(RawBuffer(tag.begin(), tag.end()));
base64.finalize();
m_encryptionParams.tag = base64.get();
}
}
void BufferHandler::Characters(const std::string &data)
{
m_data.reserve(m_data.size() + data.size());
m_data.insert(m_data.end(), data.begin(), data.end());
}
void BufferHandler::End()
{
// decoding section
switch (m_encoding) {
// PEM requires that "----- END" section comes right after "\n" character
case PEM: {
std::string trimmed = XML::trimEachLine(std::string(m_data.begin(),
m_data.end()));
m_data = RawBuffer(trimmed.begin(), trimmed.end());
break;
}
// Base64 decoder also does not accept any whitespaces
case DER:
case BASE64:
case ENCRYPTED: {
std::string trimmed = XML::trimEachLine(std::string(m_data.begin(),
m_data.end()));
Base64Decoder base64;
base64.reset();
base64.append(RawBuffer(trimmed.begin(), trimmed.end()));
base64.finalize();
m_data = base64.get();
break;
}
default:
break;
}
}
}
}
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