274 lines
10 KiB
C++
274 lines
10 KiB
C++
/*************************************************************************
|
|
*
|
|
* $RCSfile: XFileStream.cxx,v $
|
|
*
|
|
* $Revision: 1.6 $
|
|
*
|
|
* last change: $Author: mtg $ $Date: 2001-11-15 20:18:31 $
|
|
*
|
|
* The Contents of this file are made available subject to the terms of
|
|
* either of the following licenses
|
|
*
|
|
* - GNU Lesser General Public License Version 2.1
|
|
* - Sun Industry Standards Source License Version 1.1
|
|
*
|
|
* Sun Microsystems Inc., October, 2000
|
|
*
|
|
* GNU Lesser General Public License Version 2.1
|
|
* =============================================
|
|
* Copyright 2000 by Sun Microsystems, Inc.
|
|
* 901 San Antonio Road, Palo Alto, CA 94303, USA
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License version 2.1, as published by the Free Software Foundation.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*
|
|
*
|
|
* Sun Industry Standards Source License Version 1.1
|
|
* =================================================
|
|
* The contents of this file are subject to the Sun Industry Standards
|
|
* Source License Version 1.1 (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.openoffice.org/license.html.
|
|
*
|
|
* Software provided under this License is provided on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
|
|
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
|
|
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
|
|
* See the License for the specific provisions governing your rights and
|
|
* obligations concerning the Software.
|
|
*
|
|
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
|
|
*
|
|
* Copyright: 2000 by Sun Microsystems, Inc.
|
|
*
|
|
* All Rights Reserved.
|
|
*
|
|
* Contributor(s): Martin Gallwey (gallwey@sun.com)
|
|
*
|
|
*
|
|
************************************************************************/
|
|
#ifndef _XFILE_STREAM_HXX
|
|
#include <XFileStream.hxx>
|
|
#endif
|
|
#ifndef _ENCRYPTION_DATA_HXX_
|
|
#include <EncryptionData.hxx>
|
|
#endif
|
|
#ifndef _COM_SUN_STAR_PACKAGES_ZIP_ZIPCONSTANTS_HPP_
|
|
#include <com/sun/star/packages/zip/ZipConstants.hpp>
|
|
#endif
|
|
#ifndef _PACKAGE_CONSTANTS_HXX_
|
|
#include <PackageConstants.hxx>
|
|
#endif
|
|
#ifndef _RTL_CIPHER_H_
|
|
#include <rtl/cipher.h>
|
|
#endif
|
|
#ifndef _ZIP_FILE_HXX
|
|
#include <ZipFile.hxx>
|
|
#endif
|
|
#ifndef _ENCRYPTED_DATA_HEADER_HXX_
|
|
#include <EncryptedDataHeader.hxx>
|
|
#endif
|
|
#ifndef _COM_SUN_STAR_IO_XOUTPUTSTREAM_HPP_
|
|
#include <com/sun/star/io/XOutputStream.hpp>
|
|
#endif
|
|
|
|
using namespace com::sun::star::packages::zip::ZipConstants;
|
|
using namespace com::sun::star::io;
|
|
using namespace com::sun::star::uno;
|
|
using com::sun::star::lang::IllegalArgumentException;
|
|
using ::rtl::OUString;
|
|
|
|
XFileStream::XFileStream( ZipEntry & rEntry,
|
|
com::sun::star::uno::Reference < com::sun::star::io::XInputStream > xNewZipStream,
|
|
com::sun::star::uno::Reference < com::sun::star::io::XInputStream > xNewTempStream,
|
|
const vos::ORef < EncryptionData > &rData,
|
|
sal_Bool bNewRawStream,
|
|
sal_Bool bIsEncrypted )
|
|
: maEntry ( rEntry )
|
|
, mxData ( rData )
|
|
, mbRawStream ( bNewRawStream )
|
|
, mbFinished ( sal_False )
|
|
, mxTempIn ( xNewTempStream )
|
|
, mxTempSeek ( xNewTempStream, UNO_QUERY )
|
|
, mxTempOut ( xNewTempStream, UNO_QUERY )
|
|
, mxZipStream ( xNewZipStream )
|
|
, mxZipSeek ( xNewZipStream, UNO_QUERY )
|
|
, maInflater ( sal_True )
|
|
, maCipher ( NULL )
|
|
{
|
|
mnZipCurrent = maEntry.nOffset;
|
|
if (mbRawStream)
|
|
{
|
|
mnZipSize = maEntry.nMethod == DEFLATED ? maEntry.nCompressedSize : maEntry.nSize;
|
|
mnZipEnd = maEntry.nOffset + mnZipSize;
|
|
}
|
|
else
|
|
{
|
|
mnZipSize = maEntry.nSize;
|
|
mnZipEnd = maEntry.nMethod == DEFLATED ? maEntry.nOffset + maEntry.nCompressedSize : maEntry.nOffset + maEntry.nSize;
|
|
}
|
|
|
|
if ( bIsEncrypted )
|
|
{
|
|
sal_Bool bHaveEncryptData = ( !rData.isEmpty() && rData->aSalt.getLength() && rData->aInitVector.getLength() && rData->nIterationCount != 0 ) ? sal_True : sal_False;
|
|
|
|
// if we have all the encrypted data, and want a raw stream, then prepend it to the stream, otherwise
|
|
// make a cipher so we can decrypt it
|
|
if ( bHaveEncryptData )
|
|
{
|
|
if ( !bNewRawStream )
|
|
ZipFile::StaticGetCipher ( rData, maCipher );
|
|
else
|
|
{
|
|
// Put in the EncryptedDataHeader
|
|
Sequence < sal_Int8 > aEncryptedDataHeader ( n_ConstHeaderSize +
|
|
rData->aInitVector.getLength() +
|
|
rData->aSalt.getLength() +
|
|
rData->aDigest.getLength() );
|
|
sal_Int8 * pHeader = aEncryptedDataHeader.getArray();
|
|
ZipFile::StaticFillHeader ( rData, rEntry.nSize, pHeader );
|
|
mxTempOut->writeBytes ( aEncryptedDataHeader );
|
|
mnZipSize += mxTempSeek->getPosition();
|
|
mxTempSeek->seek ( 0 );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
XFileStream::~XFileStream()
|
|
{
|
|
if ( maCipher )
|
|
rtl_cipher_destroy ( maCipher );
|
|
}
|
|
|
|
void XFileStream::fill( sal_Int64 nUntil)
|
|
{
|
|
sal_Int32 nRead;
|
|
sal_Int64 nPosition = mxTempSeek->getPosition();
|
|
mxTempSeek->seek ( mxTempSeek->getLength() );
|
|
maBuffer.realloc ( n_ConstBufferSize );
|
|
|
|
while ( mxTempSeek->getLength() < nUntil )
|
|
{
|
|
if ( !mbRawStream )
|
|
{
|
|
while ( 0 == ( nRead = maInflater.doInflate( maBuffer ) ) )
|
|
{
|
|
if ( maInflater.finished() || maInflater.needsDictionary() )
|
|
{
|
|
// some error handling ?
|
|
return;
|
|
}
|
|
|
|
sal_Int64 nDiff = mnZipEnd - mnZipCurrent;
|
|
if ( nDiff > 0 )
|
|
{
|
|
mxZipSeek->seek ( mnZipCurrent );
|
|
nRead = mxZipStream->readBytes ( maCompBuffer, static_cast < sal_Int32 > ( nDiff < n_ConstBufferSize ? nDiff : n_ConstBufferSize ) );
|
|
mnZipCurrent += nRead;
|
|
// maCompBuffer now has the uncompressed data, check if we need to decrypt
|
|
// before passing to the Inflater
|
|
if ( maCipher )
|
|
{
|
|
Sequence < sal_Int8 > aCryptBuffer ( nRead );
|
|
rtlCipherError aResult = rtl_cipher_decode ( maCipher,
|
|
maCompBuffer.getConstArray(),
|
|
nRead,
|
|
reinterpret_cast < sal_uInt8 * > (aCryptBuffer.getArray()),
|
|
nRead);
|
|
OSL_ASSERT (aResult == rtl_Cipher_E_None);
|
|
maCompBuffer = aCryptBuffer; // Now it holds the decrypted data
|
|
|
|
}
|
|
maInflater.setInput ( maCompBuffer );
|
|
}
|
|
else
|
|
{
|
|
// some error handling ?
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sal_Int64 nDiff = mnZipEnd - mnZipCurrent;
|
|
mxZipSeek->seek ( mnZipCurrent );
|
|
nRead = mxZipStream->readBytes ( maBuffer, static_cast < sal_Int32 > ( nDiff < n_ConstBufferSize ? nDiff : n_ConstBufferSize ) );
|
|
mnZipCurrent += nRead;
|
|
}
|
|
Sequence < sal_Int8 > aTmpBuffer ( maBuffer.getConstArray(), nRead );
|
|
mxTempOut->writeBytes ( aTmpBuffer );
|
|
}
|
|
mxTempSeek->seek ( nPosition );
|
|
}
|
|
|
|
sal_Int32 SAL_CALL XFileStream::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
|
|
throw( NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
|
|
{
|
|
sal_Int64 nPosition = mxTempSeek->getPosition();
|
|
if ( nPosition + nBytesToRead > mnZipSize )
|
|
nBytesToRead = static_cast < sal_Int32 > ( mnZipSize - nPosition );
|
|
|
|
sal_Int64 nUntil = nBytesToRead + nPosition + n_ConstBufferSize;
|
|
if (nUntil > mnZipSize )
|
|
nUntil = mnZipSize;
|
|
if ( nUntil > mxTempSeek->getLength() )
|
|
fill ( nUntil );
|
|
sal_Int32 nRead = mxTempIn->readBytes ( aData, nBytesToRead );
|
|
return nRead;
|
|
}
|
|
|
|
sal_Int32 SAL_CALL XFileStream::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
|
|
throw( NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
|
|
{
|
|
return readBytes ( aData, nMaxBytesToRead );
|
|
}
|
|
void SAL_CALL XFileStream::skipBytes( sal_Int32 nBytesToSkip )
|
|
throw( NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
|
|
{
|
|
seek ( mxTempSeek->getPosition() + nBytesToSkip );
|
|
}
|
|
|
|
sal_Int32 SAL_CALL XFileStream::available( )
|
|
throw( NotConnectedException, IOException, RuntimeException)
|
|
{
|
|
return static_cast < sal_Int32 > ( mnZipSize - mxTempSeek->getPosition() );
|
|
}
|
|
|
|
void SAL_CALL XFileStream::closeInput( )
|
|
throw( NotConnectedException, IOException, RuntimeException)
|
|
{
|
|
}
|
|
void SAL_CALL XFileStream::seek( sal_Int64 location )
|
|
throw( IllegalArgumentException, IOException, RuntimeException)
|
|
{
|
|
if ( location > mnZipSize || location < 0 )
|
|
throw IllegalArgumentException();
|
|
if ( location > mxTempSeek->getLength() )
|
|
{
|
|
sal_Int64 nUntil = location + n_ConstBufferSize > mnZipSize ? mnZipSize : location + n_ConstBufferSize;
|
|
fill ( nUntil );
|
|
}
|
|
mxTempSeek->seek ( location );
|
|
}
|
|
sal_Int64 SAL_CALL XFileStream::getPosition( )
|
|
throw(IOException, RuntimeException)
|
|
{
|
|
return mxTempSeek->getPosition();
|
|
}
|
|
sal_Int64 SAL_CALL XFileStream::getLength( )
|
|
throw(IOException, RuntimeException)
|
|
{
|
|
return mnZipSize;
|
|
}
|