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office-gobmx/basic/source/sbx/sbxbase.cxx
Noel Grandin 0afb2b63b3 fix some leaks in basic 
Change-Id: I52c10cdbe9661974c908ee052336c779a40de402
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/115323
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2021-05-10 15:14:48 +02:00

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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 <memory>
#include <tools/debug.hxx>
#include <tools/stream.hxx>
#include <vcl/svapp.hxx>
#include <basic/sbx.hxx>
#include <sbxfac.hxx>
#include <sbxform.hxx>
#include <basic/sbxmeth.hxx>
#include <sbxprop.hxx>
#include <sbxbase.hxx>
#include <rtl/ustring.hxx>
#include <sal/log.hxx>
// AppData-Structure for SBX:
SbxAppData::SbxAppData()
: eErrCode(ERRCODE_NONE)
, eBasicFormaterLangType(LANGUAGE_DONTKNOW)
{
}
SbxAppData::~SbxAppData()
{
SolarMutexGuard g;
pBasicFormater.reset();
// basic manager repository must be destroyed before factories
mrImplRepository.clear();
}
SbxBase::SbxBase()
{
nFlags = SbxFlagBits::ReadWrite;
}
SbxBase::SbxBase( const SbxBase& r )
: SvRefBase( r )
{
nFlags = r.nFlags;
}
SbxBase::~SbxBase()
{
}
SbxBase& SbxBase::operator=( const SbxBase& r )
{
nFlags = r.nFlags;
return *this;
}
SbxDataType SbxBase::GetType() const
{
return SbxEMPTY;
}
bool SbxBase::IsFixed() const
{
return IsSet( SbxFlagBits::Fixed );
}
void SbxBase::SetModified( bool b )
{
if( IsSet( SbxFlagBits::NoModify ) )
return;
if( b )
SetFlag( SbxFlagBits::Modified );
else
ResetFlag( SbxFlagBits::Modified );
}
ErrCode const & SbxBase::GetError()
{
return GetSbxData_Impl().eErrCode;
}
void SbxBase::SetError( ErrCode e )
{
SbxAppData& r = GetSbxData_Impl();
if( e && r.eErrCode == ERRCODE_NONE )
r.eErrCode = e;
}
bool SbxBase::IsError()
{
return GetSbxData_Impl().eErrCode != ERRCODE_NONE;
}
void SbxBase::ResetError()
{
GetSbxData_Impl().eErrCode = ERRCODE_NONE;
}
void SbxBase::AddFactory( SbxFactory* pFac )
{
GetSbxData_Impl().m_Factories.emplace_back(pFac);
}
void SbxBase::RemoveFactory( SbxFactory const * pFac )
{
if (!IsSbxData_Impl())
return;
SbxAppData& r = GetSbxData_Impl();
auto it = std::find(r.m_Factories.begin(), r.m_Factories.end(), pFac);
if (it != r.m_Factories.end())
r.m_Factories.erase( it );
}
SbxBaseRef SbxBase::Create( sal_uInt16 nSbxId, sal_uInt32 nCreator )
{
// #91626: Hack to skip old Basic dialogs
// Problem: There does not exist a factory any more,
// so we have to create a dummy SbxVariable instead
if( nSbxId == 0x65 ) // Dialog Id
return new SbxVariable;
if( nCreator == SBXCR_SBX )
switch( nSbxId )
{
case SBXID_VALUE: return new SbxValue;
case SBXID_VARIABLE: return new SbxVariable;
case SBXID_ARRAY: return new SbxArray;
case SBXID_DIMARRAY: return new SbxDimArray;
case SBXID_OBJECT: return new SbxObject( "" );
case SBXID_COLLECTION: return new SbxCollection;
case SBXID_FIXCOLLECTION:
return new SbxStdCollection;
case SBXID_METHOD: return new SbxMethod( "", SbxEMPTY );
case SBXID_PROPERTY: return new SbxProperty( "", SbxEMPTY );
}
// Unknown type: go over the factories!
SbxAppData& r = GetSbxData_Impl();
SbxBaseRef pNew;
for (auto const& rpFac : r.m_Factories)
{
pNew = rpFac->Create( nSbxId, nCreator );
if( pNew )
break;
}
SAL_WARN_IF(!pNew, "basic", "No factory for SBX ID " << nSbxId);
return pNew;
}
SbxObjectRef SbxBase::CreateObject( const OUString& rClass )
{
SbxAppData& r = GetSbxData_Impl();
SbxObjectRef pNew;
for (auto const& rpFac : r.m_Factories)
{
pNew = rpFac->CreateObject( rClass );
if( pNew )
break;
}
SAL_WARN_IF(!pNew, "basic", "No factory for object class " << rClass);
return pNew;
}
namespace {
// coverity[ -taint_source ]
[[nodiscard]] SbxFlagBits CorrectFlags(SbxFlagBits nFlags)
{
// Correcting a foolishness of mine:
if (nFlags & SbxFlagBits::Reserved)
nFlags |= SbxFlagBits::GlobalSearch;
return nFlags & ~SbxFlagBits::Reserved;
}
}
SbxBaseRef SbxBase::Load( SvStream& rStrm )
{
sal_uInt16 nSbxId(0), nFlagsTmp(0), nVer(0);
sal_uInt32 nCreator(0), nSize(0);
rStrm.ReadUInt32( nCreator ).ReadUInt16( nSbxId ).ReadUInt16( nFlagsTmp ).ReadUInt16( nVer );
SbxFlagBits nFlags = CorrectFlags(static_cast<SbxFlagBits>(nFlagsTmp));
sal_uInt64 nOldPos = rStrm.Tell();
rStrm.ReadUInt32( nSize );
SbxBaseRef p = Create( nSbxId, nCreator );
if( p )
{
p->nFlags = nFlags;
if( p->LoadData( rStrm, nVer ) )
{
sal_uInt64 const nNewPos = rStrm.Tell();
nOldPos += nSize;
DBG_ASSERT( nOldPos >= nNewPos, "SBX: Too much data loaded" );
if( nOldPos != nNewPos )
rStrm.Seek( nOldPos );
if( !p->LoadCompleted() )
{
// Deleting of the object
SbxBaseRef xDeleteRef( p );
p = nullptr;
}
}
else
{
rStrm.SetError( SVSTREAM_FILEFORMAT_ERROR );
// Deleting of the object
SbxBaseRef xDeleteRef( p );
p = nullptr;
}
}
else
rStrm.SetError( SVSTREAM_FILEFORMAT_ERROR );
return p;
}
bool SbxBase::Store( SvStream& rStrm )
{
if( ( nFlags & SbxFlagBits::DontStore ) == SbxFlagBits::NONE )
{
rStrm.WriteUInt32( SBXCR_SBX )
.WriteUInt16( GetSbxId() )
.WriteUInt16( static_cast<sal_uInt16>(GetFlags()) )
.WriteUInt16( GetVersion() );
sal_uInt64 const nOldPos = rStrm.Tell();
rStrm.WriteUInt32( 0 );
bool bRes = StoreData( rStrm );
sal_uInt64 const nNewPos = rStrm.Tell();
rStrm.Seek( nOldPos );
rStrm.WriteUInt32( nNewPos - nOldPos );
rStrm.Seek( nNewPos );
if( rStrm.GetError() != ERRCODE_NONE )
bRes = false;
if( bRes )
bRes = true;
return bRes;
}
else
return true;
}
bool SbxBase::LoadCompleted()
{
return true;
}
//////////////////////////////// SbxFactory
SbxFactory::~SbxFactory()
{
}
SbxBaseRef SbxFactory::Create( sal_uInt16, sal_uInt32 )
{
return nullptr;
}
SbxObjectRef SbxFactory::CreateObject( const OUString& )
{
return nullptr;
}
///////////////////////////////// SbxInfo
SbxInfo::~SbxInfo()
{}
void SbxInfo::AddParam(const OUString& rName, SbxDataType eType, SbxFlagBits nFlags)
{
m_Params.push_back(std::make_unique<SbxParamInfo>(rName, eType, nFlags));
}
const SbxParamInfo* SbxInfo::GetParam( sal_uInt16 n ) const
{
if (n < 1 || n > m_Params.size())
return nullptr;
else
return m_Params[n - 1].get();
}
void SbxInfo::LoadData( SvStream& rStrm, sal_uInt16 nVer )
{
m_Params.clear();
sal_uInt16 nParam;
aComment = read_uInt16_lenPrefixed_uInt8s_ToOUString(rStrm,
RTL_TEXTENCODING_ASCII_US);
aHelpFile = read_uInt16_lenPrefixed_uInt8s_ToOUString(rStrm,
RTL_TEXTENCODING_ASCII_US);
rStrm.ReadUInt32( nHelpId ).ReadUInt16( nParam );
while( nParam-- )
{
sal_uInt16 nType(0), nFlagsTmp(0);
sal_uInt32 nUserData = 0;
OUString aName = read_uInt16_lenPrefixed_uInt8s_ToOUString(rStrm,
RTL_TEXTENCODING_ASCII_US);
rStrm.ReadUInt16( nType ).ReadUInt16( nFlagsTmp );
SbxFlagBits nFlags = static_cast<SbxFlagBits>(nFlagsTmp);
if( nVer > 1 )
rStrm.ReadUInt32( nUserData );
AddParam( aName, static_cast<SbxDataType>(nType), nFlags );
SbxParamInfo& p(*m_Params.back());
p.nUserData = nUserData;
}
}
void SbxInfo::StoreData( SvStream& rStrm ) const
{
write_uInt16_lenPrefixed_uInt8s_FromOUString(rStrm, aComment,
RTL_TEXTENCODING_ASCII_US );
write_uInt16_lenPrefixed_uInt8s_FromOUString(rStrm, aHelpFile,
RTL_TEXTENCODING_ASCII_US);
rStrm.WriteUInt32( nHelpId ).WriteUInt16( m_Params.size() );
for (auto const& i : m_Params)
{
write_uInt16_lenPrefixed_uInt8s_FromOUString(rStrm, i->aName,
RTL_TEXTENCODING_ASCII_US);
rStrm.WriteUInt16( i->eType )
.WriteUInt16( static_cast<sal_uInt16>(i->nFlags) )
.WriteUInt32( i->nUserData );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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