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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 <ZipOutputStream.hxx>
#include <com/sun/star/packages/zip/ZipConstants.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <comphelper/storagehelper.hxx>
#include <PackageConstants.hxx>
#include <ZipEntry.hxx>
using namespace com::sun::star;
using namespace com::sun::star::io;
using namespace com::sun::star::uno;
using namespace com::sun::star::packages::zip::ZipConstants;
/** This class is used to write Zip files
*/
ZipOutputStream::ZipOutputStream( const uno::Reference < io::XOutputStream > &xOStream )
: m_xStream(xOStream)
, m_aChucker(xOStream)
, m_bFinished(false)
{
}
ZipOutputStream::~ZipOutputStream( void )
{
for (sal_Int32 i = 0, nEnd = m_aZipList.size(); i < nEnd; i++)
delete m_aZipList[i];
}
void ZipOutputStream::addEntry( ZipEntry *pZipEntry )
{
m_aZipList.push_back( pZipEntry );
}
void ZipOutputStream::finish( )
throw(IOException, RuntimeException)
{
if (m_bFinished)
return;
if (m_aZipList.size() < 1)
OSL_FAIL("Zip file must have at least one entry!\n");
sal_Int32 nOffset= static_cast < sal_Int32 > (m_aChucker.GetPosition());
for (sal_Int32 i =0, nEnd = m_aZipList.size(); i < nEnd; i++)
writeCEN( *m_aZipList[i] );
writeEND( nOffset, static_cast < sal_Int32 > (m_aChucker.GetPosition()) - nOffset);
m_bFinished = true;
m_xStream->flush();
}
ByteChucker& ZipOutputStream::getChucker()
{
return m_aChucker;
}
void ZipOutputStream::writeEND(sal_uInt32 nOffset, sal_uInt32 nLength)
throw(IOException, RuntimeException)
{
m_aChucker << ENDSIG;
m_aChucker << static_cast < sal_Int16 > ( 0 );
m_aChucker << static_cast < sal_Int16 > ( 0 );
m_aChucker << static_cast < sal_Int16 > ( m_aZipList.size() );
m_aChucker << static_cast < sal_Int16 > ( m_aZipList.size() );
m_aChucker << nLength;
m_aChucker << nOffset;
m_aChucker << static_cast < sal_Int16 > ( 0 );
}
static sal_uInt32 getTruncated( sal_Int64 nNum, bool *pIsTruncated )
{
if( nNum >= 0xffffffff )
{
*pIsTruncated = true;
return 0xffffffff;
}
else
return static_cast< sal_uInt32 >( nNum );
}
void ZipOutputStream::writeCEN( const ZipEntry &rEntry )
throw(IOException, RuntimeException)
{
if ( !::comphelper::OStorageHelper::IsValidZipEntryFileName( rEntry.sPath, true ) )
throw IOException("Unexpected character is used in file name." );
OString sUTF8Name = OUStringToOString( rEntry.sPath, RTL_TEXTENCODING_UTF8 );
sal_Int16 nNameLength = static_cast < sal_Int16 > ( sUTF8Name.getLength() );
m_aChucker << CENSIG;
m_aChucker << rEntry.nVersion;
m_aChucker << rEntry.nVersion;
if (rEntry.nFlag & (1 << 4) )
{
// If it's an encrypted entry, we pretend its stored plain text
ZipEntry *pEntry = const_cast < ZipEntry * > ( &rEntry );
pEntry->nFlag &= ~(1 <<4 );
m_aChucker << rEntry.nFlag;
m_aChucker << static_cast < sal_Int16 > ( STORED );
}
else
{
m_aChucker << rEntry.nFlag;
m_aChucker << rEntry.nMethod;
}
bool bWrite64Header = false;
m_aChucker << static_cast < sal_uInt32> ( rEntry.nTime );
m_aChucker << static_cast < sal_uInt32> ( rEntry.nCrc );
m_aChucker << getTruncated( rEntry.nCompressedSize, &bWrite64Header );
m_aChucker << getTruncated( rEntry.nSize, &bWrite64Header );
m_aChucker << nNameLength;
m_aChucker << static_cast < sal_Int16> (0);
m_aChucker << static_cast < sal_Int16> (0);
m_aChucker << static_cast < sal_Int16> (0);
m_aChucker << static_cast < sal_Int16> (0);
m_aChucker << static_cast < sal_Int32> (0);
m_aChucker << getTruncated( rEntry.nOffset, &bWrite64Header );
if( bWrite64Header )
{
// FIXME64: need to append a ZIP64 header instead of throwing
// We're about to silently lose people's data - which they are
// unlikely to appreciate so fail instead:
throw IOException( "File contains streams that are too large." );
}
Sequence < sal_Int8 > aSequence( (sal_Int8*)sUTF8Name.getStr(), sUTF8Name.getLength() );
m_aChucker.WriteBytes( aSequence );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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