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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*/
#include <oox/crypto/DocumentEncryption.hxx>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <com/sun/star/packages/XPackageEncryption.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <oox/helper/binaryoutputstream.hxx>
#include <oox/ole/olestorage.hxx>
#include <sal/log.hxx>
namespace oox::crypto {
using namespace css::io;
using namespace css::uno;
using namespace css::beans;
DocumentEncryption::DocumentEncryption(const Reference< XComponentContext >& rxContext,
Reference<XStream> const & xDocumentStream,
oox::ole::OleStorage& rOleStorage,
const Sequence<NamedValue>& rMediaEncData)
: mxContext(rxContext)
, mxDocumentStream(xDocumentStream)
, mrOleStorage(rOleStorage)
, mMediaEncData(rMediaEncData)
{
// Select engine
for (int i = 0; i < rMediaEncData.getLength(); i++)
{
if (rMediaEncData[i].Name == "CryptoType")
{
OUString sCryptoType;
rMediaEncData[i].Value >>= sCryptoType;
if (sCryptoType == "Standard")
sCryptoType = "StrongEncryptionDataSpace";
Sequence<Any> aArguments;
mxPackageEncryption.set(
mxContext->getServiceManager()->createInstanceWithArgumentsAndContext(
"com.sun.star.comp.oox.crypto." + sCryptoType, aArguments, mxContext), css::uno::UNO_QUERY);
if (!mxPackageEncryption.is())
{
SAL_WARN("oox", "Requested encryption method \"" << sCryptoType << "\" is not supported");
}
break;
}
}
}
bool DocumentEncryption::encrypt()
{
if (!mxPackageEncryption.is())
return false;
Reference<XInputStream> xInputStream (mxDocumentStream->getInputStream(), UNO_SET_THROW);
Reference<XSeekable> xSeekable(xInputStream, UNO_QUERY);
if (!xSeekable.is())
return false;
xSeekable->seek(0); // seek to begin of the document stream
if (!mrOleStorage.isStorage())
return false;
mxPackageEncryption->setupEncryption(mMediaEncData);
Sequence<NamedValue> aStreams = mxPackageEncryption->encrypt(xInputStream);
for (const NamedValue & aStream : std::as_const(aStreams))
{
Reference<XOutputStream> xOutputStream(mrOleStorage.openOutputStream(aStream.Name), UNO_SET_THROW);
BinaryXOutputStream aBinaryOutputStream(xOutputStream, true);
css::uno::Sequence<sal_Int8> aStreamSequence;
aStream.Value >>= aStreamSequence;
aBinaryOutputStream.writeData(aStreamSequence);
aBinaryOutputStream.close();
}
return true;
}
} // namespace oox::crypto
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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