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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 "scdetect.hxx"
#include <sal/macros.h>
#include <framework/interaction.hxx>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/frame/XFrame.hpp>
#include <com/sun/star/frame/XModel.hpp>
#include <com/sun/star/awt/XWindow.hpp>
#include <com/sun/star/lang/XUnoTunnel.hpp>
#include <comphelper/processfactory.hxx>
#include <comphelper/string.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <com/sun/star/container/XNameAccess.hpp>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/task/XInteractionHandler.hpp>
#include <com/sun/star/ucb/CommandAbortedException.hpp>
#include <com/sun/star/ucb/InteractiveAppException.hpp>
#include <com/sun/star/ucb/XContent.hpp>
#include <com/sun/star/packages/zip/ZipIOException.hpp>
#include <toolkit/helper/vclunohelper.hxx>
#include <ucbhelper/simpleinteractionrequest.hxx>
#include <svtools/parhtml.hxx>
#include <rtl/ustring.h>
#include <svl/itemset.hxx>
#include <vcl/window.hxx>
#include <svl/eitem.hxx>
#include <svl/stritem.hxx>
#include <tools/urlobj.hxx>
#include <osl/mutex.hxx>
#include <svtools/sfxecode.hxx>
#include <svtools/ehdl.hxx>
#include <sot/storinfo.hxx>
#include <vcl/svapp.hxx>
#include <sfx2/sfxsids.hrc>
#include <sfx2/request.hxx>
#include <sfx2/docfile.hxx>
#include <sfx2/docfilt.hxx>
#include <sfx2/fcontnr.hxx>
#include <sfx2/app.hxx>
#include <sfx2/brokenpackageint.hxx>
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::frame;
using namespace ::com::sun::star::task;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::ucb;
namespace {
const sal_Char pFilterLotus[] = "Lotus";
const sal_Char pFilterQPro6[] = "Quattro Pro 6.0";
const sal_Char pFilterDBase[] = "dBase";
const sal_Char pFilterDif[] = "DIF";
const sal_Char pFilterSylk[] = "SYLK";
// Tabelle mit Suchmustern
// Bedeutung der Sequenzen
// 0x00??: genau Byte 0x?? muss an dieser Stelle stehen
// 0x0100: ein Byte ueberlesen (don't care)
// 0x02nn: ein Byte aus 0xnn Alternativen folgt
// 0x8000: Erkennung abgeschlossen
#define M_DC 0x0100
#define M_ALT(ANZ) (0x0200+(ANZ))
#define M_ENDE 0x8000
const sal_uInt16 pLotus[] = // Lotus 1/1A/2
{ 0x0000, 0x0000, 0x0002, 0x0000,
M_ALT(2), 0x0004, 0x0006,
0x0004, M_ENDE };
const sal_uInt16 pLotusNew[] = // Lotus >= 9.7
{ 0x0000, 0x0000, M_DC, 0x0000, // Rec# + Len (0x1a)
M_ALT(3), 0x0003, 0x0004, 0x0005, // File Revision Code 97->ME
0x0010, 0x0004, 0x0000, 0x0000,
M_ENDE };
const sal_uInt16 pLotus2[] = // Lotus >3
{ 0x0000, 0x0000, 0x001A, 0x0000, // Rec# + Len (26)
M_ALT(2), 0x0000, 0x0002, // File Revision Code
0x0010,
0x0004, 0x0000, // File Revision Subcode
M_ENDE };
const sal_uInt16 pQPro[] =
{ 0x0000, 0x0000, 0x0002, 0x0000,
M_ALT(4), 0x0001, 0x0002, // WB1, WB2
0x0006, 0x0007, // QPro 6/7 (?)
0x0010,
M_ENDE };
const sal_uInt16 pDIF1[] = // DIF mit CR-LF
{
'T', 'A', 'B', 'L', 'E',
M_DC, M_DC,
'0', ',', '1',
M_DC, M_DC,
'\"',
M_ENDE };
const sal_uInt16 pDIF2[] = // DIF mit CR oder LF
{
'T', 'A', 'B', 'L', 'E',
M_DC,
'0', ',', '1',
M_DC,
'\"',
M_ENDE };
const sal_uInt16 pSylk[] = // Sylk
{
'I', 'D', ';',
M_ALT(3), 'P', 'N', 'E', // 'P' plus undocumented Excel extensions 'N' and 'E'
M_ENDE };
bool detectThisFormat(SvStream& rStr, const sal_uInt16* pSearch)
{
sal_uInt8 nByte;
rStr.Seek( 0 ); // am Anfang war alles Uebel...
rStr.ReadUChar( nByte );
bool bSync = true;
while( !rStr.IsEof() && bSync )
{
sal_uInt16 nMuster = *pSearch;
if( nMuster < 0x0100 )
{ // direkter Byte-Vergleich
if( ( sal_uInt8 ) nMuster != nByte )
bSync = false;
}
else if( nMuster & M_DC )
{ // don't care
}
else if( nMuster & M_ALT(0) )
{ // alternative Bytes
sal_uInt8 nAnzAlt = ( sal_uInt8 ) nMuster;
bSync = false; // zunaechst unsynchron
while( nAnzAlt > 0 )
{
pSearch++;
if( ( sal_uInt8 ) *pSearch == nByte )
bSync = true; // jetzt erst Synchronisierung
nAnzAlt--;
}
}
else if( nMuster & M_ENDE )
{ // Format detected
return true;
}
pSearch++;
rStr.ReadUChar( nByte );
}
return false;
}
}
ScFilterDetect::ScFilterDetect( const uno::Reference<uno::XComponentContext>& /*xContext*/ )
{
}
ScFilterDetect::~ScFilterDetect()
{
}
#if 0
// This method is no longer used, but I do want to keep this for now to see
// if we could transfer this check to the now centralized ascii detection
// code in the filter module.
static sal_Bool lcl_MayBeAscii( SvStream& rStream )
{
// ASCII/CSV is considered possible if there are no null bytes, or a Byte
// Order Mark is present, or if, for Unicode UCS2/UTF-16, all null bytes
// are on either even or uneven byte positions.
rStream.Seek(STREAM_SEEK_TO_BEGIN);
const size_t nBufSize = 2048;
sal_uInt16 aBuffer[ nBufSize ];
sal_uInt8* pByte = reinterpret_cast<sal_uInt8*>(aBuffer);
sal_uLong nBytesRead = rStream.Read( pByte, nBufSize*2);
if ( nBytesRead >= 2 && (aBuffer[0] == 0xfffe || aBuffer[0] == 0xfeff) )
{
// Unicode BOM file may contain null bytes.
return sal_True;
}
const sal_uInt16* p = aBuffer;
sal_uInt16 nMask = 0xffff;
nBytesRead /= 2;
while( nBytesRead-- && nMask )
{
sal_uInt16 nVal = *p++ & nMask;
if (!(nVal & 0x00ff))
nMask &= 0xff00;
if (!(nVal & 0xff00))
nMask &= 0x00ff;
}
return nMask != 0;
}
#endif
static sal_Bool lcl_MayBeDBase( SvStream& rStream )
{
// Look for dbf marker, see connectivity/source/inc/dbase/DTable.hxx
// DBFType for values.
const sal_uInt8 nValidMarks[] = {
0x03, 0x04, 0x05, 0x30, 0x43, 0xB3, 0x83, 0x8b, 0x8e, 0xf5 };
sal_uInt8 nMark;
rStream.Seek(STREAM_SEEK_TO_BEGIN);
rStream.ReadUChar( nMark );
bool bValidMark = false;
for (size_t i=0; i < sizeof(nValidMarks)/sizeof(nValidMarks[0]) && !bValidMark; ++i)
{
if (nValidMarks[i] == nMark)
bValidMark = true;
}
if ( !bValidMark )
return false;
const size_t nHeaderBlockSize = 32;
// Empty dbf is >= 32*2+1 bytes in size.
const size_t nEmptyDbf = nHeaderBlockSize * 2 + 1;
rStream.Seek(STREAM_SEEK_TO_END);
sal_uLong nSize = rStream.Tell();
if ( nSize < nEmptyDbf )
return false;
// length of header starts at 8
rStream.Seek(8);
sal_uInt16 nHeaderLen;
rStream.ReadUInt16( nHeaderLen );
if ( nHeaderLen < nEmptyDbf || nSize < nHeaderLen )
return false;
// Last byte of header must be 0x0d, this is how it's specified.
// #i9581#,#i26407# but some applications don't follow the specification
// and pad the header with one byte 0x00 to reach an
// even boundary. Some (#i88577# ) even pad more or pad using a 0x1a ^Z
// control character (#i8857#). This results in:
// Last byte of header must be 0x0d on 32 bytes boundary.
sal_uInt16 nBlocks = (nHeaderLen - 1) / nHeaderBlockSize;
sal_uInt8 nEndFlag = 0;
while ( nBlocks > 1 && nEndFlag != 0x0d ) {
rStream.Seek( nBlocks-- * nHeaderBlockSize );
rStream.ReadUChar( nEndFlag );
}
return ( 0x0d == nEndFlag );
}
OUString SAL_CALL ScFilterDetect::detect( uno::Sequence<beans::PropertyValue>& lDescriptor )
throw( uno::RuntimeException, std::exception )
{
uno::Reference< XInputStream > xStream;
uno::Reference< XContent > xContent;
uno::Reference< XInteractionHandler > xInteraction;
OUString aURL;
OUString sTemp;
OUString aTypeName; // a name describing the type (from MediaDescriptor, usually from flat detection)
OUString aPreselectedFilterName; // a name describing the filter to use (from MediaDescriptor, usually from UI action)
OUString aDocumentTitle; // interesting only if set in this method
// opening as template is done when a parameter tells to do so and a template filter can be detected
// (otherwise no valid filter would be found) or if the detected filter is a template filter and
// there is no parameter that forbids to open as template
sal_Bool bOpenAsTemplate = false;
sal_Bool bWasReadOnly = false, bReadOnly = false;
sal_Bool bRepairPackage = false;
sal_Bool bRepairAllowed = false;
bool bDeepDetection = false;
// now some parameters that can already be in the array, but may be overwritten or new inserted here
// remember their indices in the case new values must be added to the array
sal_Int32 nPropertyCount = lDescriptor.getLength();
sal_Int32 nIndexOfFilterName = -1;
sal_Int32 nIndexOfInputStream = -1;
sal_Int32 nIndexOfContent = -1;
sal_Int32 nIndexOfReadOnlyFlag = -1;
sal_Int32 nIndexOfTemplateFlag = -1;
sal_Int32 nIndexOfDocumentTitle = -1;
for( sal_Int32 nProperty=0; nProperty<nPropertyCount; ++nProperty )
{
// extract properties
if ( lDescriptor[nProperty].Name == "URL" )
{
lDescriptor[nProperty].Value >>= sTemp;
aURL = sTemp;
}
else if( aURL.isEmpty() && lDescriptor[nProperty].Name == "FileName" )
{
lDescriptor[nProperty].Value >>= sTemp;
aURL = sTemp;
}
else if ( lDescriptor[nProperty].Name == "TypeName" )
{
lDescriptor[nProperty].Value >>= sTemp;
aTypeName = sTemp;
}
else if ( lDescriptor[nProperty].Name == "FilterName" )
{
lDescriptor[nProperty].Value >>= sTemp;
aPreselectedFilterName = sTemp;
// if the preselected filter name is not correct, it must be erased after detection
// remember index of property to get access to it later
nIndexOfFilterName = nProperty;
}
else if ( lDescriptor[nProperty].Name == "InputStream" )
nIndexOfInputStream = nProperty;
else if ( lDescriptor[nProperty].Name == "ReadOnly" )
nIndexOfReadOnlyFlag = nProperty;
else if ( lDescriptor[nProperty].Name == "UCBContent" )
nIndexOfContent = nProperty;
else if ( lDescriptor[nProperty].Name == "AsTemplate" )
{
lDescriptor[nProperty].Value >>= bOpenAsTemplate;
nIndexOfTemplateFlag = nProperty;
}
else if ( lDescriptor[nProperty].Name == "InteractionHandler" )
lDescriptor[nProperty].Value >>= xInteraction;
else if ( lDescriptor[nProperty].Name == "RepairPackage" )
lDescriptor[nProperty].Value >>= bRepairPackage;
else if ( lDescriptor[nProperty].Name == "DocumentTitle" )
nIndexOfDocumentTitle = nProperty;
else if (lDescriptor[nProperty].Name == "DeepDetection")
bDeepDetection = lDescriptor[nProperty].Value.get<sal_Bool>();
}
// can't check the type for external filters, so set the "dont" flag accordingly
SolarMutexGuard aGuard;
//SfxFilterFlags nMust = SFX_FILTER_IMPORT, nDont = SFX_FILTER_NOTINSTALLED;
SfxAllItemSet *pSet = new SfxAllItemSet( SFX_APP()->GetPool() );
TransformParameters( SID_OPENDOC, lDescriptor, *pSet );
SFX_ITEMSET_ARG( pSet, pItem, SfxBoolItem, SID_DOC_READONLY, false );
bWasReadOnly = pItem && pItem->GetValue();
const SfxFilter* pFilter = 0;
OUString aPrefix = "private:factory/";
if( aURL.startsWith( aPrefix ) )
{
OUString aPattern = aPrefix + "scalc";
if ( aURL.startsWith( aPattern ) )
pFilter = SfxFilter::GetDefaultFilterFromFactory( aURL );
}
else
{
// container for Calc filters
SfxFilterMatcher aMatcher("scalc");
if ( !aPreselectedFilterName.isEmpty() )
pFilter = SfxFilter::GetFilterByName( aPreselectedFilterName );
else if( !aTypeName.isEmpty() )
pFilter = aMatcher.GetFilter4EA( aTypeName );
// ctor of SfxMedium uses owner transition of ItemSet
SfxMedium aMedium( aURL, bWasReadOnly ? STREAM_STD_READ : STREAM_STD_READWRITE, NULL, pSet );
aMedium.UseInteractionHandler( true );
sal_Bool bIsStorage = aMedium.IsStorage();
if ( aMedium.GetErrorCode() == ERRCODE_NONE )
{
// remember input stream and content and put them into the descriptor later
// should be done here since later the medium can switch to a version
xStream.set(aMedium.GetInputStream());
xContent.set(aMedium.GetContent());
bReadOnly = aMedium.IsReadOnly();
// maybe that IsStorage() already created an error!
if ( bIsStorage )
{
uno::Reference < embed::XStorage > xStorage(aMedium.GetStorage( false ));
if ( aMedium.GetLastStorageCreationState() != ERRCODE_NONE )
{
// error during storage creation means _here_ that the medium
// is broken, but we can not handle it in medium since unpossibility
// to create a storage does not _always_ means that the medium is broken
aMedium.SetError(aMedium.GetLastStorageCreationState(), OUString(OSL_LOG_PREFIX));
if ( xInteraction.is() )
{
OUString empty;
try
{
InteractiveAppException xException( empty,
uno::Reference< XInterface >(),
InteractionClassification_ERROR,
aMedium.GetError() );
uno::Reference< XInteractionRequest > xRequest(
new ucbhelper::SimpleInteractionRequest( makeAny( xException ),
ucbhelper::CONTINUATION_APPROVE ) );
xInteraction->handle( xRequest );
}
catch ( Exception & ) {};
}
}
else if ( xStorage.is() )
{
try
{
OUString aFilterName;
if ( pFilter )
aFilterName = pFilter->GetName();
aTypeName = SfxFilter::GetTypeFromStorage( xStorage, pFilter ? pFilter->IsOwnTemplateFormat() : false, &aFilterName );
}
catch( const lang::WrappedTargetException& aWrap )
{
if (!bDeepDetection)
// Bail out early unless it's a deep detection.
return OUString();
packages::zip::ZipIOException aZipException;
// repairing is done only if this type is requested from outside
if ( ( aWrap.TargetException >>= aZipException ) && !aTypeName.isEmpty() )
{
if ( xInteraction.is() )
{
// the package is broken one
aDocumentTitle = aMedium.GetURLObject().getName(
INetURLObject::LAST_SEGMENT,
true,
INetURLObject::DECODE_WITH_CHARSET );
if ( !bRepairPackage )
{
// ask the user whether he wants to try to repair
RequestPackageReparation aRequest( aDocumentTitle );
xInteraction->handle( aRequest.GetRequest() );
bRepairAllowed = aRequest.isApproved();
}
if ( !bRepairAllowed )
{
// repair either not allowed or not successful
NotifyBrokenPackage aNotifyRequest( aDocumentTitle );
xInteraction->handle( aNotifyRequest.GetRequest() );
}
}
if ( !bRepairAllowed )
aTypeName = "";
}
}
catch( uno::RuntimeException& )
{
throw;
}
catch( uno::Exception& )
{
aTypeName = "";
}
if ( !aTypeName.isEmpty() )
pFilter = SfxFilterMatcher("scalc").GetFilter4EA( aTypeName );
}
}
else
{
// Non-storage format.
if (aTypeName == "calc8_template" ||
aTypeName == "calc8" ||
aTypeName == "calc_StarOffice_XML_Calc" ||
aTypeName == "calc_StarOffice_XML_Calc_Template")
// These types require storage. Bail out.
return OUString();
SvStream* pStream = aMedium.GetInStream();
if (!pStream)
// No stream, no detection.
return OUString();
pFilter = NULL;
const char* pSearchFilterName = NULL;
if (aTypeName == "calc_Lotus")
{
if (!detectThisFormat(*pStream, pLotus) && !detectThisFormat(*pStream, pLotusNew) && !detectThisFormat(*pStream, pLotus2))
return OUString();
pSearchFilterName = pFilterLotus;
}
else if (aTypeName == "calc_QPro")
{
if (!detectThisFormat(*pStream, pQPro))
return OUString();
pSearchFilterName = pFilterQPro6;
}
else if (aTypeName == "calc_SYLK")
{
if (!detectThisFormat(*pStream, pSylk))
return OUString();
pSearchFilterName = pFilterSylk;
}
else if (aTypeName == "calc_DIF")
{
if (!detectThisFormat(*pStream, pDIF1) && !detectThisFormat(*pStream, pDIF2))
return OUString();
pSearchFilterName = pFilterDif;
}
else if (aTypeName == "calc_dBase")
{
if (!lcl_MayBeDBase(*pStream))
return OUString();
pSearchFilterName = pFilterDBase;
}
if (!pSearchFilterName)
return OUString();
pFilter = aMatcher.GetFilter4FilterName(OUString::createFromAscii(pSearchFilterName));
}
}
}
if ( nIndexOfInputStream == -1 && xStream.is() )
{
// if input stream wasn't part of the descriptor, now it should be, otherwise the content would be opend twice
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "InputStream";
lDescriptor[nPropertyCount].Value <<= xStream;
nPropertyCount++;
}
if ( nIndexOfContent == -1 && xContent.is() )
{
// if input stream wasn't part of the descriptor, now it should be, otherwise the content would be opend twice
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "UCBContent";
lDescriptor[nPropertyCount].Value <<= xContent;
nPropertyCount++;
}
if ( bReadOnly != bWasReadOnly )
{
if ( nIndexOfReadOnlyFlag == -1 )
{
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "ReadOnly";
lDescriptor[nPropertyCount].Value <<= bReadOnly;
nPropertyCount++;
}
else
lDescriptor[nIndexOfReadOnlyFlag].Value <<= bReadOnly;
}
if ( !bRepairPackage && bRepairAllowed )
{
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "RepairPackage";
lDescriptor[nPropertyCount].Value <<= bRepairAllowed;
nPropertyCount++;
bOpenAsTemplate = sal_True;
// TODO/LATER: set progress bar that should be used
}
if ( bOpenAsTemplate )
{
if ( nIndexOfTemplateFlag == -1 )
{
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "AsTemplate";
lDescriptor[nPropertyCount].Value <<= bOpenAsTemplate;
nPropertyCount++;
}
else
lDescriptor[nIndexOfTemplateFlag].Value <<= bOpenAsTemplate;
}
if ( !aDocumentTitle.isEmpty() )
{
// the title was set here
if ( nIndexOfDocumentTitle == -1 )
{
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "DocumentTitle";
lDescriptor[nPropertyCount].Value <<= aDocumentTitle;
nPropertyCount++;
}
else
lDescriptor[nIndexOfDocumentTitle].Value <<= aDocumentTitle;
}
if (!pFilter)
return OUString();
if (nIndexOfFilterName == -1)
{
lDescriptor.realloc(nPropertyCount + 1);
lDescriptor[nPropertyCount].Name = "FilterName";
lDescriptor[nPropertyCount].Value <<= pFilter->GetName();
++nPropertyCount;
}
else
lDescriptor[nIndexOfFilterName].Value <<= pFilter->GetName();
return aTypeName;
}
OUString SAL_CALL ScFilterDetect::getImplementationName() throw (uno::RuntimeException, std::exception)
{
return impl_getStaticImplementationName();
}
sal_Bool ScFilterDetect::supportsService( const OUString& sServiceName )
throw (uno::RuntimeException, std::exception)
{
return cppu::supportsService(this, sServiceName);
}
com::sun::star::uno::Sequence<OUString> ScFilterDetect::getSupportedServiceNames()
throw (uno::RuntimeException, std::exception)
{
return impl_getStaticSupportedServiceNames();
}
uno::Sequence<OUString> ScFilterDetect::impl_getStaticSupportedServiceNames()
{
uno::Sequence<OUString> seqServiceNames(1);
seqServiceNames.getArray()[0] = "com.sun.star.frame.ExtendedTypeDetection";
return seqServiceNames;
}
OUString ScFilterDetect::impl_getStaticImplementationName()
{
return OUString("com.sun.star.comp.calc.FormatDetector");
}
uno::Reference<uno::XInterface> ScFilterDetect::impl_createInstance(
const uno::Reference<uno::XComponentContext>& xContext ) throw (uno::Exception)
{
return static_cast<cppu::OWeakObject*>(new ScFilterDetect(xContext));
}
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