43eca2d9f8
Otherwise write directly to the resulting zip file. Change-Id: I75097969f0cccf0b45da591c71221e5ae18668cb
302 lines
11 KiB
C++
302 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <ZipOutputStream.hxx>
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#include <com/sun/star/packages/zip/ZipConstants.hpp>
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#include <com/sun/star/io/XOutputStream.hpp>
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#include <comphelper/storagehelper.hxx>
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#include <osl/diagnose.h>
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#include <osl/time.h>
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#include <PackageConstants.hxx>
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#include <ZipEntry.hxx>
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#include <ZipOutputEntry.hxx>
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#include <ZipPackageStream.hxx>
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using namespace com::sun::star;
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using namespace com::sun::star::io;
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using namespace com::sun::star::uno;
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using namespace com::sun::star::packages::zip::ZipConstants;
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/** This class is used to write Zip files
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*/
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ZipOutputStream::ZipOutputStream( const uno::Reference < io::XOutputStream > &xOStream )
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: m_xStream(xOStream)
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, m_aChucker(xOStream)
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, m_pCurrentEntry(NULL)
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, m_rSharedThreadPool(comphelper::ThreadPool::getSharedOptimalPool())
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{
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}
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ZipOutputStream::~ZipOutputStream( void )
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{
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}
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void ZipOutputStream::setEntry( ZipEntry *pEntry )
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{
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if (pEntry->nTime == -1)
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pEntry->nTime = getCurrentDosTime();
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if (pEntry->nMethod == -1)
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pEntry->nMethod = DEFLATED;
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pEntry->nVersion = 20;
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pEntry->nFlag = 1 << 11;
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if (pEntry->nSize == -1 || pEntry->nCompressedSize == -1 ||
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pEntry->nCrc == -1)
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{
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pEntry->nSize = pEntry->nCompressedSize = 0;
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pEntry->nFlag |= 8;
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}
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}
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void ZipOutputStream::addDeflatingThread( ZipOutputEntry *pEntry, comphelper::ThreadTask *pThread )
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{
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m_rSharedThreadPool.pushTask(pThread);
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m_aEntries.push_back(pEntry);
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}
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void ZipOutputStream::rawWrite( const Sequence< sal_Int8 >& rBuffer )
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throw(IOException, RuntimeException)
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{
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m_aChucker.WriteBytes( rBuffer );
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}
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void ZipOutputStream::rawCloseEntry( bool bEncrypt )
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throw(IOException, RuntimeException)
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{
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assert(m_pCurrentEntry && "Forgot to call writeLOC()?");
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if ( m_pCurrentEntry->nMethod == DEFLATED && ( m_pCurrentEntry->nFlag & 8 ) )
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writeEXT(*m_pCurrentEntry);
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if (bEncrypt)
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m_pCurrentEntry->nMethod = STORED;
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m_pCurrentEntry = NULL;
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}
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void ZipOutputStream::finish()
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throw(IOException, RuntimeException)
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{
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assert(!m_aZipList.empty() && "Zip file must have at least one entry!");
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// Wait for all threads to finish & write
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m_rSharedThreadPool.waitUntilEmpty();
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for (size_t i = 0; i < m_aEntries.size(); i++)
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{
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writeLOC(m_aEntries[i]->getZipEntry(), m_aEntries[i]->isEncrypt());
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rawWrite(m_aEntries[i]->getData());
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rawCloseEntry(m_aEntries[i]->isEncrypt());
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m_aEntries[i]->getZipPackageStream()->successfullyWritten(m_aEntries[i]->getZipEntry());
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delete m_aEntries[i];
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}
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sal_Int32 nOffset= static_cast < sal_Int32 > (m_aChucker.GetPosition());
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for (size_t i = 0; i < m_aZipList.size(); i++)
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{
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writeCEN( *m_aZipList[i] );
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delete m_aZipList[i];
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}
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writeEND( nOffset, static_cast < sal_Int32 > (m_aChucker.GetPosition()) - nOffset);
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m_xStream->flush();
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m_aZipList.clear();
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}
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css::uno::Reference< css::io::XOutputStream > ZipOutputStream::getStream()
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{
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return m_xStream;
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}
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void ZipOutputStream::writeEND(sal_uInt32 nOffset, sal_uInt32 nLength)
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throw(IOException, RuntimeException)
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{
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m_aChucker.WriteInt32( ENDSIG );
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m_aChucker.WriteInt16( static_cast < sal_Int16 > ( 0 ) );
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m_aChucker.WriteInt16( static_cast < sal_Int16 > ( 0 ) );
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m_aChucker.WriteInt16( static_cast < sal_Int16 > ( m_aZipList.size() ) );
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m_aChucker.WriteInt16( static_cast < sal_Int16 > ( m_aZipList.size() ) );
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m_aChucker.WriteUInt32( nLength );
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m_aChucker.WriteUInt32( nOffset );
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m_aChucker.WriteInt16( static_cast < sal_Int16 > ( 0 ) );
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}
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static sal_uInt32 getTruncated( sal_Int64 nNum, bool *pIsTruncated )
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{
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if( nNum >= 0xffffffff )
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{
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*pIsTruncated = true;
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return 0xffffffff;
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}
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else
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return static_cast< sal_uInt32 >( nNum );
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}
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void ZipOutputStream::writeCEN( const ZipEntry &rEntry )
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throw(IOException, RuntimeException)
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{
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if ( !::comphelper::OStorageHelper::IsValidZipEntryFileName( rEntry.sPath, true ) )
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throw IOException("Unexpected character is used in file name." );
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OString sUTF8Name = OUStringToOString( rEntry.sPath, RTL_TEXTENCODING_UTF8 );
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sal_Int16 nNameLength = static_cast < sal_Int16 > ( sUTF8Name.getLength() );
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m_aChucker.WriteInt32( CENSIG );
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m_aChucker.WriteInt16( rEntry.nVersion );
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m_aChucker.WriteInt16( rEntry.nVersion );
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m_aChucker.WriteInt16( rEntry.nFlag );
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m_aChucker.WriteInt16( rEntry.nMethod );
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bool bWrite64Header = false;
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m_aChucker.WriteUInt32( static_cast < sal_uInt32> ( rEntry.nTime ) );
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m_aChucker.WriteUInt32( static_cast < sal_uInt32> ( rEntry.nCrc ) );
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m_aChucker.WriteUInt32( getTruncated( rEntry.nCompressedSize, &bWrite64Header ) );
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m_aChucker.WriteUInt32( getTruncated( rEntry.nSize, &bWrite64Header ) );
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m_aChucker.WriteInt16( nNameLength );
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m_aChucker.WriteInt16( static_cast < sal_Int16> (0) );
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m_aChucker.WriteInt16( static_cast < sal_Int16> (0) );
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m_aChucker.WriteInt16( static_cast < sal_Int16> (0) );
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m_aChucker.WriteInt16( static_cast < sal_Int16> (0) );
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m_aChucker.WriteInt32( static_cast < sal_Int32> (0) );
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m_aChucker.WriteUInt32( getTruncated( rEntry.nOffset, &bWrite64Header ) );
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if( bWrite64Header )
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{
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// FIXME64: need to append a ZIP64 header instead of throwing
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// We're about to silently lose people's data - which they are
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// unlikely to appreciate so fail instead:
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throw IOException( "File contains streams that are too large." );
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}
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Sequence < sal_Int8 > aSequence( (sal_Int8*)sUTF8Name.getStr(), sUTF8Name.getLength() );
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m_aChucker.WriteBytes( aSequence );
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}
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void ZipOutputStream::writeEXT( const ZipEntry &rEntry )
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throw(IOException, RuntimeException)
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{
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bool bWrite64Header = false;
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m_aChucker.WriteInt32( EXTSIG );
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m_aChucker.WriteUInt32( static_cast < sal_uInt32> ( rEntry.nCrc ) );
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m_aChucker.WriteUInt32( getTruncated( rEntry.nCompressedSize, &bWrite64Header ) );
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m_aChucker.WriteUInt32( getTruncated( rEntry.nSize, &bWrite64Header ) );
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if( bWrite64Header )
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{
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// FIXME64: need to append a ZIP64 header instead of throwing
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// We're about to silently lose people's data - which they are
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// unlikely to appreciate so fail instead:
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throw IOException( "File contains streams that are too large." );
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}
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}
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void ZipOutputStream::writeLOC( ZipEntry *pEntry, bool bEncrypt )
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throw(IOException, RuntimeException)
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{
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assert(!m_pCurrentEntry && "Forgot to close an entry with rawCloseEntry()?");
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m_pCurrentEntry = pEntry;
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m_aZipList.push_back( m_pCurrentEntry );
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const ZipEntry &rEntry = *m_pCurrentEntry;
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if ( !::comphelper::OStorageHelper::IsValidZipEntryFileName( rEntry.sPath, true ) )
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throw IOException("Unexpected character is used in file name." );
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OString sUTF8Name = OUStringToOString( rEntry.sPath, RTL_TEXTENCODING_UTF8 );
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sal_Int16 nNameLength = static_cast < sal_Int16 > ( sUTF8Name.getLength() );
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m_aChucker.WriteInt32( LOCSIG );
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m_aChucker.WriteInt16( rEntry.nVersion );
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m_aChucker.WriteInt16( rEntry.nFlag );
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// If it's an encrypted entry, we pretend its stored plain text
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if (bEncrypt)
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m_aChucker.WriteInt16( static_cast < sal_Int16 > ( STORED ) );
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else
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m_aChucker.WriteInt16( rEntry.nMethod );
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bool bWrite64Header = false;
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m_aChucker.WriteUInt32( static_cast < sal_uInt32 > (rEntry.nTime) );
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if ((rEntry.nFlag & 8) == 8 )
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{
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m_aChucker.WriteInt32( static_cast < sal_Int32 > (0) );
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m_aChucker.WriteInt32( static_cast < sal_Int32 > (0) );
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m_aChucker.WriteInt32( static_cast < sal_Int32 > (0) );
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}
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else
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{
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m_aChucker.WriteUInt32( static_cast < sal_uInt32 > (rEntry.nCrc) );
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m_aChucker.WriteUInt32( getTruncated( rEntry.nCompressedSize, &bWrite64Header ) );
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m_aChucker.WriteUInt32( getTruncated( rEntry.nSize, &bWrite64Header ) );
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}
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m_aChucker.WriteInt16( nNameLength );
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m_aChucker.WriteInt16( static_cast < sal_Int16 > (0) );
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if( bWrite64Header )
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{
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// FIXME64: need to append a ZIP64 header instead of throwing
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// We're about to silently lose people's data - which they are
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// unlikely to appreciate so fail instead:
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throw IOException( "File contains streams that are too large." );
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}
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Sequence < sal_Int8 > aSequence( (sal_Int8*)sUTF8Name.getStr(), sUTF8Name.getLength() );
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m_aChucker.WriteBytes( aSequence );
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m_pCurrentEntry->nOffset = m_aChucker.GetPosition() - (LOCHDR + nNameLength);
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}
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sal_uInt32 ZipOutputStream::getCurrentDosTime()
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{
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oslDateTime aDateTime;
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TimeValue aTimeValue;
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osl_getSystemTime ( &aTimeValue );
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osl_getDateTimeFromTimeValue( &aTimeValue, &aDateTime);
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// at year 2108, there is an overflow
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// -> some decision needs to be made
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// how to handle the ZIP file format (just overflow?)
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// if the current system time is before 1980,
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// then the time traveller will have to make a decision
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// how to handle the ZIP file format before it is invented
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// (just underflow?)
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assert(aDateTime.Year > 1980 && aDateTime.Year < 2108);
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sal_uInt32 nYear = static_cast <sal_uInt32> (aDateTime.Year);
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if (nYear>=1980)
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nYear-=1980;
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else if (nYear>=80)
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{
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nYear-=80;
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}
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sal_uInt32 nResult = static_cast < sal_uInt32>( ( ( ( aDateTime.Day) +
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( 32 * (aDateTime.Month)) +
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( 512 * nYear ) ) << 16) |
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( ( aDateTime.Seconds/2) +
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( 32 * aDateTime.Minutes) +
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( 2048 * static_cast <sal_uInt32 > (aDateTime.Hours) ) ) );
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return nResult;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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