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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/.
*
* 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/frame.hxx>
#include <sfx2/sfxsids.hrc>
#include <sot/storage.hxx>
#include <sot/exchange.hxx>
#include <filter/msfilter/classids.hxx>
#include <tools/globname.hxx>
#include <com/sun/star/packages/XPackageEncryption.hpp>
#include <com/sun/star/ucb/ContentCreationException.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <unotools/streamwrap.hxx>
#include <unotools/defaultencoding.hxx>
#include <unotools/wincodepage.hxx>
#include <osl/diagnose.h>
#include <filter.hxx>
#include <document.hxx>
#include <xistream.hxx>
#include <xltools.hxx>
#include <docoptio.hxx>
#include <comphelper/sequenceashashmap.hxx>
#include <comphelper/processfactory.hxx>
#include <docsh.hxx>
#include <scerrors.hxx>
#include <imp_op.hxx>
#include <excimp8.hxx>
#include <exp_op.hxx>
#include <scdll.hxx>
#include <memory>
using namespace css;
static void lcl_getListOfStreams(SotStorage * pStorage, comphelper::SequenceAsHashMap& aStreamsData, const OUString& sPrefix)
{
SvStorageInfoList aElements;
pStorage->FillInfoList(&aElements);
for (const auto & aElement : aElements)
{
OUString sStreamFullName = sPrefix.getLength() ? sPrefix + "/" + aElement.GetName() : aElement.GetName();
if (aElement.IsStorage())
{
tools::SvRef<SotStorage> xSubStorage = pStorage->OpenSotStorage(aElement.GetName(), StreamMode::STD_READ | StreamMode::SHARE_DENYALL);
lcl_getListOfStreams(xSubStorage.get(), aStreamsData, sStreamFullName);
}
else
{
// Read stream
tools::SvRef<SotStorageStream> rStream = pStorage->OpenSotStream(aElement.GetName(), StreamMode::READ | StreamMode::SHARE_DENYALL);
if (rStream.is())
{
sal_Int32 nStreamSize = rStream->GetSize();
uno::Sequence< sal_Int8 > oData;
oData.realloc(nStreamSize);
sal_Int32 nReadBytes = rStream->ReadBytes(oData.getArray(), nStreamSize);
if (nStreamSize == nReadBytes)
aStreamsData[sStreamFullName] <<= oData;
}
}
}
}
static tools::SvRef<SotStorage> lcl_DRMDecrypt(const SfxMedium& rMedium, const tools::SvRef<SotStorage>& rStorage, std::shared_ptr<SvStream>& rNewStorageStrm)
{
tools::SvRef<SotStorage> aNewStorage;
// We have DRM encrypted storage. We should try to decrypt it first, if we can
uno::Sequence< uno::Any > aArguments;
uno::Reference<uno::XComponentContext> xComponentContext(comphelper::getProcessComponentContext());
uno::Reference< packages::XPackageEncryption > xPackageEncryption(
xComponentContext->getServiceManager()->createInstanceWithArgumentsAndContext(
"com.sun.star.comp.oox.crypto.DRMDataSpace", aArguments, xComponentContext), uno::UNO_QUERY);
if (!xPackageEncryption.is())
{
// We do not know how to decrypt this
return aNewStorage;
}
comphelper::SequenceAsHashMap aStreamsData;
lcl_getListOfStreams(rStorage.get(), aStreamsData, "");
try {
uno::Sequence<beans::NamedValue> aStreams = aStreamsData.getAsConstNamedValueList();
if (!xPackageEncryption->readEncryptionInfo(aStreams))
{
// We failed with decryption
return aNewStorage;
}
tools::SvRef<SotStorageStream> rContentStream = rStorage->OpenSotStream("\011DRMContent", StreamMode::READ | StreamMode::SHARE_DENYALL);
if (!rContentStream.is())
{
return aNewStorage;
}
rNewStorageStrm = std::make_shared<SvMemoryStream>();
uno::Reference<io::XInputStream > xInputStream(new utl::OSeekableInputStreamWrapper(rContentStream.get(), false));
uno::Reference<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
uno::Sequence<beans::NamedValue> aEncryptionData = xPackageEncryption->createEncryptionData("");
rMedium.GetItemSet()->Put(SfxUnoAnyItem(SID_ENCRYPTIONDATA, uno::Any(aEncryptionData)));
}
catch (const std::exception&)
{
return aNewStorage;
}
return aNewStorage;
}
ErrCode ScFormatFilterPluginImpl::ScImportExcel( SfxMedium& rMedium, ScDocument* pDocument, const EXCIMPFORMAT eFormat )
{
// check the passed Calc document
OSL_ENSURE( pDocument, "::ScImportExcel - no document" );
if( !pDocument ) return SCERR_IMPORT_INTERNAL; // should not happen
/* Import all BIFF versions regardless on eFormat, needed for import of
external cells (file type detection returns Excel4.0). */
if( (eFormat != EIF_AUTO) && (eFormat != EIF_BIFF_LE4) && (eFormat != EIF_BIFF5) && (eFormat != EIF_BIFF8) )
{
OSL_FAIL( "::ScImportExcel - wrong file format specification" );
return SCERR_IMPORT_FORMAT;
}
// check the input stream from medium
SvStream* pMedStrm = rMedium.GetInStream();
OSL_ENSURE( pMedStrm, "::ScImportExcel - medium without input stream" );
if( !pMedStrm ) return SCERR_IMPORT_OPEN; // should not happen
SvStream* pBookStrm = nullptr; // The "Book"/"Workbook" stream containing main data.
XclBiff eBiff = EXC_BIFF_UNKNOWN; // The BIFF version of the main stream.
// try to open an OLE storage
tools::SvRef<SotStorage> xRootStrg;
tools::SvRef<SotStorageStream> xStrgStrm;
std::shared_ptr<SvStream> aNewStorageStrm;
if( SotStorage::IsStorageFile( pMedStrm ) )
{
xRootStrg = new SotStorage( pMedStrm, false );
if( xRootStrg->GetError() )
xRootStrg = nullptr;
}
// try to open "Book" or "Workbook" stream in OLE storage
if( xRootStrg.is() )
{
// Check if there is DRM encryption in storage
tools::SvRef<SotStorageStream> xDRMStrm = ScfTools::OpenStorageStreamRead(xRootStrg, "\011DRMContent");
if (xDRMStrm.is())
{
xRootStrg = lcl_DRMDecrypt(rMedium, xRootStrg, aNewStorageStrm);
}
// try to open the "Book" stream
tools::SvRef<SotStorageStream> xBookStrm = ScfTools::OpenStorageStreamRead( xRootStrg, EXC_STREAM_BOOK );
XclBiff eBookBiff = xBookStrm.is() ? XclImpStream::DetectBiffVersion( *xBookStrm ) : EXC_BIFF_UNKNOWN;
// try to open the "Workbook" stream
tools::SvRef<SotStorageStream> xWorkbookStrm = ScfTools::OpenStorageStreamRead( xRootStrg, EXC_STREAM_WORKBOOK );
XclBiff eWorkbookBiff = xWorkbookStrm.is() ? XclImpStream::DetectBiffVersion( *xWorkbookStrm ) : EXC_BIFF_UNKNOWN;
// decide which stream to use
if( (eWorkbookBiff != EXC_BIFF_UNKNOWN) && ((eBookBiff == EXC_BIFF_UNKNOWN) || (eWorkbookBiff > eBookBiff)) )
{
/* Only "Workbook" stream exists; or both streams exist,
and "Workbook" has higher BIFF version than "Book" stream. */
xStrgStrm = xWorkbookStrm;
eBiff = eWorkbookBiff;
}
else if( eBookBiff != EXC_BIFF_UNKNOWN )
{
/* Only "Book" stream exists; or both streams exist,
and "Book" has higher BIFF version than "Workbook" stream. */
xStrgStrm = xBookStrm;
eBiff = eBookBiff;
}
pBookStrm = xStrgStrm.get();
}
// no "Book" or "Workbook" stream found, try plain input stream from medium (even for BIFF5+)
if( !pBookStrm )
{
eBiff = XclImpStream::DetectBiffVersion( *pMedStrm );
if( eBiff != EXC_BIFF_UNKNOWN )
pBookStrm = pMedStrm;
}
// try to import the file
ErrCode eRet = SCERR_IMPORT_UNKNOWN_BIFF;
if( pBookStrm )
{
pBookStrm->SetBufferSize( 0x8000 ); // still needed?
XclImpRootData aImpData(
eBiff, rMedium, xRootStrg, *pDocument,
utl_getWinTextEncodingFromLangStr(utl_getLocaleForGlobalDefaultEncoding()));
std::unique_ptr< ImportExcel > xFilter;
switch( eBiff )
{
case EXC_BIFF2:
case EXC_BIFF3:
case EXC_BIFF4:
case EXC_BIFF5:
xFilter.reset( new ImportExcel( aImpData, *pBookStrm ) );
break;
case EXC_BIFF8:
xFilter.reset( new ImportExcel8( aImpData, *pBookStrm ) );
break;
default: DBG_ERROR_BIFF();
}
eRet = xFilter ? xFilter->Read() : SCERR_IMPORT_INTERNAL;
}
return eRet;
}
static ErrCode lcl_ExportExcelBiff( SfxMedium& rMedium, ScDocument *pDocument,
SvStream* pMedStrm, bool bBiff8, rtl_TextEncoding eNach )
{
uno::Reference< packages::XPackageEncryption > xPackageEncryption;
uno::Sequence< beans::NamedValue > aEncryptionData;
const SfxUnoAnyItem* pEncryptionDataItem = SfxItemSet::GetItem<SfxUnoAnyItem>(rMedium.GetItemSet(), SID_ENCRYPTIONDATA, false);
SvStream* pOriginalMediaStrm = pMedStrm;
std::shared_ptr<SvStream> pMediaStrm;
if (pEncryptionDataItem && (pEncryptionDataItem->GetValue() >>= aEncryptionData))
{
::comphelper::SequenceAsHashMap aHashData(aEncryptionData);
OUString sCryptoType = aHashData.getUnpackedValueOrDefault("CryptoType", OUString());
if (sCryptoType.getLength())
{
uno::Reference<uno::XComponentContext> xComponentContext(comphelper::getProcessComponentContext());
uno::Sequence<uno::Any> aArguments{
uno::Any(beans::NamedValue("Binary", uno::Any(true))) };
xPackageEncryption.set(
xComponentContext->getServiceManager()->createInstanceWithArgumentsAndContext(
"com.sun.star.comp.oox.crypto." + sCryptoType, aArguments, xComponentContext), uno::UNO_QUERY);
if (xPackageEncryption.is())
{
// We have an encryptor. Export document into memory stream and encrypt it later
pMediaStrm = std::make_shared<SvMemoryStream>();
pMedStrm = pMediaStrm.get();
// Temp removal of EncryptionData to avoid password protection triggering
rMedium.GetItemSet()->ClearItem(SID_ENCRYPTIONDATA);
}
}
}
// try to open an OLE storage
tools::SvRef<SotStorage> xRootStrg = new SotStorage( pMedStrm, false );
if( xRootStrg->GetError() ) return SCERR_IMPORT_OPEN;
// create BIFF dependent strings
OUString aStrmName, aClipName, aClassName;
if( bBiff8 )
{
aStrmName = EXC_STREAM_WORKBOOK;
aClipName = "Biff8";
aClassName = "Microsoft Excel 97-Tabelle";
}
else
{
aStrmName = EXC_STREAM_BOOK;
aClipName = "Biff5";
aClassName = "Microsoft Excel 5.0-Tabelle";
}
// open the "Book"/"Workbook" stream
tools::SvRef<SotStorageStream> xStrgStrm = ScfTools::OpenStorageStreamWrite( xRootStrg, aStrmName );
if( !xStrgStrm.is() || xStrgStrm->GetError() ) return SCERR_IMPORT_OPEN;
xStrgStrm->SetBufferSize( 0x8000 ); // still needed?
ErrCode eRet = SCERR_IMPORT_UNKNOWN_BIFF;
XclExpRootData aExpData( bBiff8 ? EXC_BIFF8 : EXC_BIFF5, rMedium, xRootStrg, *pDocument, eNach );
if ( bBiff8 )
{
ExportBiff8 aFilter( aExpData, *xStrgStrm );
eRet = aFilter.Write();
}
else
{
ExportBiff5 aFilter( aExpData, *xStrgStrm );
eRet = aFilter.Write();
}
if( eRet == SCWARN_IMPORT_RANGE_OVERFLOW )
eRet = SCWARN_EXPORT_MAXROW;
SvGlobalName aGlobName(MSO_EXCEL5_CLASSID);
SotClipboardFormatId nClip = SotExchange::RegisterFormatName( aClipName );
xRootStrg->SetClass( aGlobName, nClip, aClassName );
xStrgStrm->Commit();
xRootStrg->Commit();
if (xPackageEncryption.is())
{
// Perform DRM encryption
pMedStrm->Seek(0);
xPackageEncryption->setupEncryption(aEncryptionData);
uno::Reference<io::XInputStream > xInputStream(new utl::OSeekableInputStreamWrapper(pMedStrm, false));
uno::Sequence<beans::NamedValue> aStreams = xPackageEncryption->encrypt(xInputStream);
tools::SvRef<SotStorage> xEncryptedRootStrg = new SotStorage(pOriginalMediaStrm, false);
for (const beans::NamedValue & aStreamData : std::as_const(aStreams))
{
// To avoid long paths split and open substorages recursively
// Splitting paths manually, since comphelper::string::split is trimming special characters like \0x01, \0x09
tools::SvRef<SotStorage> pStorage = xEncryptedRootStrg.get();
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)
{
eRet = ERRCODE_IO_GENERAL;
break;
}
tools::SvRef<SotStorageStream> pStream = pStorage->OpenSotStream(sFileName);
if (!pStream)
{
eRet = ERRCODE_IO_GENERAL;
break;
}
uno::Sequence<sal_Int8> aStreamContent;
aStreamData.Value >>= aStreamContent;
size_t nBytesWritten = pStream->WriteBytes(aStreamContent.getConstArray(), aStreamContent.getLength());
if (nBytesWritten != static_cast<size_t>(aStreamContent.getLength()))
{
eRet = ERRCODE_IO_CANTWRITE;
break;
}
}
xEncryptedRootStrg->Commit();
// Restore encryption data
rMedium.GetItemSet()->Put(SfxUnoAnyItem(SID_ENCRYPTIONDATA, uno::Any(aEncryptionData)));
}
return eRet;
}
ErrCode ScFormatFilterPluginImpl::ScExportExcel5( SfxMedium& rMedium, ScDocument *pDocument,
ExportFormatExcel eFormat, rtl_TextEncoding eNach )
{
if( eFormat != ExpBiff5 && eFormat != ExpBiff8 )
return SCERR_IMPORT_NI;
// check the passed Calc document
OSL_ENSURE( pDocument, "::ScExportExcel5 - no document" );
if( !pDocument ) return SCERR_IMPORT_INTERNAL; // should not happen
// check the output stream from medium
SvStream* pMedStrm = rMedium.GetOutStream();
OSL_ENSURE( pMedStrm, "::ScExportExcel5 - medium without output stream" );
if( !pMedStrm ) return SCERR_IMPORT_OPEN; // should not happen
ErrCode eRet = lcl_ExportExcelBiff(rMedium, pDocument, pMedStrm, eFormat == ExpBiff8, eNach);
return eRet;
}
extern "C" SAL_DLLPUBLIC_EXPORT bool TestImportCalcRTF(SvStream &rStream)
{
ScDLL::Init();
ScDocument aDocument;
ScDocOptions aDocOpt = aDocument.GetDocOptions();
aDocOpt.SetLookUpColRowNames(false);
aDocument.SetDocOptions(aDocOpt);
aDocument.MakeTable(0);
aDocument.EnableExecuteLink(false);
aDocument.SetInsertingFromOtherDoc(true);
ScRange aRange;
bool bRet;
try
{
bRet = ScFormatFilter::Get().ScImportRTF(rStream, OUString(), &aDocument, aRange) == ERRCODE_NONE;
}
catch (const std::range_error&)
{
return false;
}
return bRet;
}
extern "C" SAL_DLLPUBLIC_EXPORT bool TestImportXLS(SvStream& rStream)
{
ScDLL::Init();
SfxMedium aMedium;
css::uno::Reference<css::io::XInputStream> xStm(new utl::OInputStreamWrapper(rStream));
aMedium.GetItemSet()->Put(SfxUnoAnyItem(SID_INPUTSTREAM, css::uno::Any(xStm)));
ScDocShellRef xDocShell = new ScDocShell(SfxModelFlags::EMBEDDED_OBJECT |
SfxModelFlags::DISABLE_EMBEDDED_SCRIPTS |
SfxModelFlags::DISABLE_DOCUMENT_RECOVERY);
xDocShell->DoInitNew();
ScDocument& rDoc = xDocShell->GetDocument();
ScDocOptions aDocOpt = rDoc.GetDocOptions();
aDocOpt.SetLookUpColRowNames(false);
rDoc.SetDocOptions(aDocOpt);
rDoc.MakeTable(0);
rDoc.EnableExecuteLink(false);
rDoc.SetInsertingFromOtherDoc(true);
rDoc.InitDrawLayer(xDocShell.get());
bool bRet(false);
try
{
bRet = ScFormatFilter::Get().ScImportExcel(aMedium, &rDoc, EIF_AUTO) == ERRCODE_NONE;
}
catch (const css::ucb::ContentCreationException&)
{
}
catch (const std::out_of_range&)
{
}
xDocShell->DoClose();
xDocShell.clear();
return bRet;
}
extern "C" SAL_DLLPUBLIC_EXPORT bool TestImportDIF(SvStream &rStream)
{
ScDLL::Init();
ScDocument aDocument;
ScDocOptions aDocOpt = aDocument.GetDocOptions();
aDocOpt.SetLookUpColRowNames(false);
aDocument.SetDocOptions(aDocOpt);
aDocument.MakeTable(0);
aDocument.EnableExecuteLink(false);
aDocument.SetInsertingFromOtherDoc(true);
return ScFormatFilter::Get().ScImportDif(rStream, &aDocument, ScAddress(0, 0, 0), RTL_TEXTENCODING_IBM_850) == ERRCODE_NONE;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|