/* -*- 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
#include <sfx2/docfile.hxx>
#include <sfx2/docfilt.hxx>
#include <sfx2/sfxsids.hrc>
#include <filter/msfilter/msoleexp.hxx>
#include <svx/svxerr.hxx>
#include <unotools/streamwrap.hxx>
#include <sot/storage.hxx>
#include <comphelper/sequenceashashmap.hxx>
#include <comphelper/processfactory.hxx>
#include <officecfg/Office/Impress.hxx>
#include <officecfg/Office/Common.hxx>
#include <com/sun/star/packages/XPackageEncryption.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <sdpptwrp.hxx>
#include <DrawDocShell.hxx>
#include <sfx2/frame.hxx>
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::task;
using namespace ::com::sun::star::frame;
SdPPTFilter::SdPPTFilter( SfxMedium& rMedium, ::sd::DrawDocShell& rDocShell ) :
SdFilter( rMedium, rDocShell ),
pBas ( nullptr )
{
}
SdPPTFilter::~SdPPTFilter()
{
delete pBas; // deleting the compressed basic storage
}
static void lcl_getListOfStreams(SotStorage * pStorage, comphelper::SequenceAsHashMap& aStreamsData, std::u16string_view sPrefix)
{
SvStorageInfoList aElements;
pStorage->FillInfoList(&aElements);
for (const auto & aElement : aElements)
{
OUString sStreamFullName = sPrefix.size() ? OUString::Concat(sPrefix) + "/" + aElement.GetName() : aElement.GetName();
if (aElement.IsStorage())
{
rtl::Reference<SotStorage> xSubStorage = pStorage->OpenSotStorage(aElement.GetName(), StreamMode::STD_READ | StreamMode::SHARE_DENYALL);
lcl_getListOfStreams(xSubStorage.get(), aStreamsData, sStreamFullName);
}
else
{
// Read stream
rtl::Reference<SotStorageStream> rStream = pStorage->OpenSotStream(aElement.GetName(), StreamMode::READ | StreamMode::SHARE_DENYALL);
if (rStream.is())
{
sal_Int32 nStreamSize = rStream->GetSize();
Sequence< sal_Int8 > oData;
oData.realloc(nStreamSize);
sal_Int32 nReadBytes = rStream->ReadBytes(oData.getArray(), nStreamSize);
if (nStreamSize == nReadBytes)
aStreamsData[sStreamFullName] <<= oData;
}
}
}
}
static rtl::Reference<SotStorage> lcl_DRMDecrypt(const SfxMedium& rMedium, const rtl::Reference<SotStorage>& rStorage, std::shared_ptr<SvStream>& rNewStorageStrm)
{
rtl::Reference<SotStorage> aNewStorage;
// We have DRM encrypted storage. We should try to decrypt it first, if we can
Sequence< Any > aArguments;
const Reference<XComponentContext>& xComponentContext(comphelper::getProcessComponentContext());
Reference< css::packages::XPackageEncryption > xPackageEncryption(
xComponentContext->getServiceManager()->createInstanceWithArgumentsAndContext(
u"com.sun.star.comp.oox.crypto.DRMDataSpace"_ustr, aArguments, xComponentContext), UNO_QUERY);
if (!xPackageEncryption.is())
{
// We do not know how to decrypt this
return aNewStorage;
}
comphelper::SequenceAsHashMap aStreamsData;
lcl_getListOfStreams(rStorage.get(), aStreamsData, u"");
try {
Sequence<NamedValue> aStreams = aStreamsData.getAsConstNamedValueList();
if (!xPackageEncryption->readEncryptionInfo(aStreams))
{
// We failed with decryption
return aNewStorage;
}
rtl::Reference<SotStorageStream> rContentStream = rStorage->OpenSotStream(u"\011DRMContent"_ustr, StreamMode::READ | StreamMode::SHARE_DENYALL);
if (!rContentStream.is())
{
return aNewStorage;
}
rNewStorageStrm = std::make_shared<SvMemoryStream>();
Reference<css::io::XInputStream > xInputStream(new utl::OSeekableInputStreamWrapper(rContentStream.get(), false));
Reference<css::io::XOutputStream > xDecryptedStream(new utl::OSeekableOutputStreamWrapper(*rNewStorageStrm));
if (!xPackageEncryption->decrypt(xInputStream, xDecryptedStream))
{
// We failed with decryption
return aNewStorage;
}
rNewStorageStrm->Seek(0);
// Further reading is done from new document
aNewStorage = new SotStorage(*rNewStorageStrm);
// Set the media descriptor data
Sequence<NamedValue> aEncryptionData = xPackageEncryption->createEncryptionData(u""_ustr);
rMedium.GetItemSet().Put(SfxUnoAnyItem(SID_ENCRYPTIONDATA, Any(aEncryptionData)));
}
catch (const std::exception&)
{
return aNewStorage;
}
return aNewStorage;
}
bool SdPPTFilter::Import()
{
bool bRet = false;
std::shared_ptr<SvStream> aDecryptedStorageStrm;
rtl::Reference<SotStorage> pStorage = new SotStorage(mrMedium.GetInStream(), false);
if( !pStorage->GetError() )
{
/* check if there is a dualstorage, then the
document is probably a PPT95 containing PPT97 */
OUString sDualStorage( u"PP97_DUALSTORAGE"_ustr );
if ( pStorage->IsContained( sDualStorage ) )
{
pStorage = pStorage->OpenSotStorage(sDualStorage, StreamMode::STD_READ);
}
if (pStorage->IsContained(u"\011DRMContent"_ustr))
{
// Document is DRM encrypted
pStorage = lcl_DRMDecrypt(mrMedium, pStorage, aDecryptedStorageStrm);
}
rtl::Reference<SotStorageStream> pDocStream(pStorage->OpenSotStream( u"PowerPoint Document"_ustr , StreamMode::STD_READ ));
if( pDocStream )
{
pDocStream->SetVersion( pStorage->GetVersion() );
pDocStream->SetCryptMaskKey(pStorage->GetKey());
if ( pStorage->IsStream( u"EncryptedSummary"_ustr ) )
mrMedium.SetError(ERRCODE_SVX_READ_FILTER_PPOINT);
else
{
bRet = ImportPPT( &mrDocument, *pDocStream, *pStorage, mrMedium );
if ( !bRet )
mrMedium.SetError(SVSTREAM_WRONGVERSION);
}
}
}
return bRet;
}
bool SdPPTFilter::Export()
{
bool bRet = false;
if( mxModel.is() )
{
sal_uInt32 nCnvrtFlags = 0;
if ( officecfg::Office::Common::Filter::Microsoft::Export::MathToMathType::get() )
nCnvrtFlags |= OLE_STARMATH_2_MATHTYPE;
if ( officecfg::Office::Common::Filter::Microsoft::Export::WriterToWinWord::get() )
nCnvrtFlags |= OLE_STARWRITER_2_WINWORD;
if ( officecfg::Office::Common::Filter::Microsoft::Export::CalcToExcel::get() )
nCnvrtFlags |= OLE_STARCALC_2_EXCEL;
if ( officecfg::Office::Common::Filter::Microsoft::Export::ImpressToPowerPoint::get() )
nCnvrtFlags |= OLE_STARIMPRESS_2_POWERPOINT;
if ( officecfg::Office::Common::Filter::Microsoft::Export::EnablePowerPointPreview::get() )
nCnvrtFlags |= 0x8000;
CreateStatusIndicator();
//OUString sBaseURI( "BaseURI");
std::vector< PropertyValue > aProperties;
PropertyValue aProperty;
aProperty.Name = "BaseURI";
aProperty.Value <<= mrMedium.GetBaseURL( true );
aProperties.push_back( aProperty );
SvStream * pOutputStrm = mrMedium.GetOutStream();
Sequence< NamedValue > aEncryptionData;
Reference< css::packages::XPackageEncryption > xPackageEncryption;
const SfxUnoAnyItem* pEncryptionDataItem = mrMedium.GetItemSet().GetItem(SID_ENCRYPTIONDATA, false);
std::shared_ptr<SvStream> pMediaStrm;
if (pEncryptionDataItem && (pEncryptionDataItem->GetValue() >>= aEncryptionData))
{
::comphelper::SequenceAsHashMap aHashData(aEncryptionData);
OUString sCryptoType = aHashData.getUnpackedValueOrDefault(u"CryptoType"_ustr, OUString());
if (sCryptoType.getLength())
{
const Reference<XComponentContext>& xComponentContext(comphelper::getProcessComponentContext());
Sequence<Any> aArguments{
Any(NamedValue(u"Binary"_ustr, Any(true))) };
xPackageEncryption.set(
xComponentContext->getServiceManager()->createInstanceWithArgumentsAndContext(
"com.sun.star.comp.oox.crypto." + sCryptoType, aArguments, xComponentContext), UNO_QUERY);
if (xPackageEncryption.is())
{
// We have an encryptor. Export document into memory stream and encrypt it later
pMediaStrm = std::make_shared<SvMemoryStream>();
pOutputStrm = pMediaStrm.get();
// Temp removal of EncryptionData to avoid password protection triggering
mrMedium.GetItemSet().ClearItem(SID_ENCRYPTIONDATA);
}
}
}
rtl::Reference<SotStorage> xStorRef = new SotStorage(pOutputStrm, false);
if (xStorRef.is())
{
bRet = ExportPPT(aProperties, xStorRef, mxModel, mxStatusIndicator, pBas, nCnvrtFlags);
xStorRef->Commit();
if (xPackageEncryption.is())
{
// Perform DRM encryption
pOutputStrm->Seek(0);
xPackageEncryption->setupEncryption(aEncryptionData);
Reference<css::io::XInputStream > xInputStream(new utl::OSeekableInputStreamWrapper(pOutputStrm, false));
Sequence<NamedValue> aStreams = xPackageEncryption->encrypt(xInputStream);
rtl::Reference<SotStorage> xEncryptedRootStrg = new SotStorage(mrMedium.GetOutStream(), false);
for (const NamedValue& aStreamData : aStreams)
{
// To avoid long paths split and open substorages recursively
// Splitting paths manually, since comphelper::string::split is trimming special characters like \0x01, \0x09
rtl::Reference<SotStorage> pStorage = xEncryptedRootStrg;
OUString sFileName;
sal_Int32 idx = 0;
do
{
OUString sPathElem = aStreamData.Name.getToken(0, L'/', idx);
if (!sPathElem.isEmpty())
{
if (idx < 0)
{
sFileName = sPathElem;
}
else
{
pStorage = pStorage->OpenSotStorage(sPathElem);
}
}
} while (pStorage && idx >= 0);
if (!pStorage)
{
bRet = false;
break;
}
rtl::Reference<SotStorageStream> pStream = pStorage->OpenSotStream(sFileName);
if (!pStream)
{
bRet = false;
break;
}
Sequence<sal_Int8> aStreamContent;
aStreamData.Value >>= aStreamContent;
size_t nBytesWritten = pStream->WriteBytes(aStreamContent.getConstArray(), aStreamContent.getLength());
if (nBytesWritten != static_cast<size_t>(aStreamContent.getLength()))
{
bRet = false;
break;
}
}
xEncryptedRootStrg->Commit();
// Restore encryption data
mrMedium.GetItemSet().Put(SfxUnoAnyItem(SID_ENCRYPTIONDATA, Any(aEncryptionData)));
}
}
}
return bRet;
}
void SdPPTFilter::PreSaveBasic()
{
if( officecfg::Office::Impress::Filter::Import::VBA::Save::get() )
{
SaveVBA( static_cast<SfxObjectShell&>(mrDocShell), pBas );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V1019 Compound assignment expression is used inside condition.