wudd/source/WUD/DefaultNUSDataProcessor.cpp

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/****************************************************************************
* Copyright (C) 2016-2021 Maschell
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
****************************************************************************/
#include "DefaultNUSDataProcessor.h"
bool DefaultNUSDataProcessor::readPlainDecryptedContent(const std::shared_ptr<Content> &pContent, std::vector<uint8_t> &out_data) {
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if ((pContent->type & 0x0002) == 0x0002) {
DEBUG_FUNCTION_LINE("Hashed content not supported yet");
return false;
}
auto contentSize = ROUNDUP(pContent->encryptedFileSize, 16);
out_data.resize(contentSize);
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auto *inData = (uint8_t *) malloc(contentSize);
if (inData == nullptr) {
DEBUG_FUNCTION_LINE("Failed to alloc");
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return false;
}
if (!dataProvider->readRawContent(pContent, inData, 0, contentSize)) {
DEBUG_FUNCTION_LINE("Failed tor read content");
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free(inData);
return false;
}
std::array<uint8_t, 16> IV{};
memset(IV.data(), 0, 16);
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uint16_t content_index = pContent->index;
memcpy(IV.data(), &content_index, 2);
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nusDecryption->decryptData(IV, inData, out_data.data(), contentSize);
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free(inData);
return true;
}
std::shared_ptr<NUSDataProvider> DefaultNUSDataProcessor::getDataProvider() {
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return dataProvider;
}
DefaultNUSDataProcessor::DefaultNUSDataProcessor(
std::shared_ptr<NUSDataProvider> pDataProvider,
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std::shared_ptr<NUSDecryption> pNUSDecryption) : dataProvider(std::move(pDataProvider)),
nusDecryption(std::move(pNUSDecryption)) {
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}