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Diffstat (limited to 'sc/source/filter/excel/excel.cxx')
| -rw-r--r-- | sc/source/filter/excel/excel.cxx | 494 |
1 files changed, 494 insertions, 0 deletions
diff --git a/sc/source/filter/excel/excel.cxx b/sc/source/filter/excel/excel.cxx new file mode 100644 index 000000000..edc60721a --- /dev/null +++ b/sc/source/filter/excel/excel.cxx @@ -0,0 +1,494 @@ +/* -*- 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: */ |