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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sot.hxx"
#include <string.h> // memset(), memcpy()
#include <rtl/ustring.hxx>
#include <com/sun/star/lang/Locale.hpp>
#include <unotools/charclass.hxx>
#include "sot/stg.hxx"
#include "stgelem.hxx"
#include "stgcache.hxx"
#include "stgstrms.hxx"
#include "stgdir.hxx"
#include "stgio.hxx"
static sal_uInt8 cStgSignature[ 8 ] = { 0xD0,0xCF,0x11,0xE0,0xA1,0xB1,0x1A,0xE1 };
////////////////////////////// struct ClsId /////////////////////////////
SvStream& operator >>( SvStream& r, ClsId& rId )
{
r >> rId.n1
>> rId.n2
>> rId.n3
>> rId.n4
>> rId.n5
>> rId.n6
>> rId.n7
>> rId.n8
>> rId.n9
>> rId.n10
>> rId.n11;
return r;
}
SvStream& operator <<( SvStream& r, const ClsId& rId )
{
return
r << (sal_Int32) rId.n1
<< (sal_Int16) rId.n2
<< (sal_Int16) rId.n3
<< (sal_uInt8) rId.n4
<< (sal_uInt8) rId.n5
<< (sal_uInt8) rId.n6
<< (sal_uInt8) rId.n7
<< (sal_uInt8) rId.n8
<< (sal_uInt8) rId.n9
<< (sal_uInt8) rId.n10
<< (sal_uInt8) rId.n11;
}
///////////////////////////// class StgHeader ////////////////////////////
StgHeader::StgHeader()
{
memset( this, 0, sizeof( StgHeader ) );
}
void StgHeader::Init()
{
memset( this, 0, sizeof( StgHeader ) );
memcpy( cSignature, cStgSignature, 8 );
nVersion = 0x0003003B;
nByteOrder = 0xFFFE;
nPageSize = 9; // 512 bytes
nDataPageSize = 6; // 64 bytes
nThreshold = 4096;
nDataFATSize = 0;
nMasterChain = STG_EOF;
SetTOCStart( STG_EOF );
SetDataFATStart( STG_EOF );
for( short i = 0; i < 109; i++ )
SetFATPage( i, STG_FREE );
}
sal_Bool StgHeader::Load( StgIo& rIo )
{
SvStream& r = *rIo.GetStrm();
Load( r );
return rIo.Good();
}
sal_Bool StgHeader::Load( SvStream& r )
{
r.Seek( 0L );
r.Read( cSignature, 8 );
r >> aClsId // 08 Class ID
>> nVersion // 1A version number
>> nByteOrder // 1C Unicode byte order indicator
>> nPageSize // 1E 1 << nPageSize = block size
>> nDataPageSize; // 20 1 << this size == data block size
r.SeekRel( 10 );
r >> nFATSize // 2C total number of FAT pages
>> nTOCstrm // 30 starting page for the TOC stream
>> nReserved // 34
>> nThreshold // 38 minimum file size for big data
>> nDataFAT // 3C page # of 1st data FAT block
>> nDataFATSize // 40 # of data FATpages
>> nMasterChain // 44 chain to the next master block
>> nMaster; // 48 # of additional master blocks
for( short i = 0; i < 109; i++ )
r >> nMasterFAT[ i ];
return r.GetErrorCode() == ERRCODE_NONE;
}
sal_Bool StgHeader::Store( StgIo& rIo )
{
if( !bDirty )
return sal_True;
SvStream& r = *rIo.GetStrm();
r.Seek( 0L );
r.Write( cSignature, 8 + 16 );
r << nVersion // 1A version number
<< nByteOrder // 1C Unicode byte order indicator
<< nPageSize // 1E 1 << nPageSize = block size
<< nDataPageSize // 20 1 << this size == data block size
<< (sal_Int32) 0 << (sal_Int32) 0 << (sal_Int16) 0
<< nFATSize // 2C total number of FAT pages
<< nTOCstrm // 30 starting page for the TOC stream
<< nReserved // 34
<< nThreshold // 38 minimum file size for big data
<< nDataFAT // 3C page # of 1st data FAT block
<< nDataFATSize // 40 # of data FAT pages
<< nMasterChain // 44 chain to the next master block
<< nMaster; // 48 # of additional master blocks
for( short i = 0; i < 109; i++ )
r << nMasterFAT[ i ];
bDirty = !rIo.Good();
return sal_Bool( !bDirty );
}
static bool lcl_wontoverflow(short shift)
{
return shift >= 0 && shift < (short)sizeof(short) * 8 - 1;
}
// Perform thorough checks also on unknown variables
sal_Bool StgHeader::Check()
{
return sal_Bool( memcmp( cSignature, cStgSignature, 8 ) == 0
&& (short) ( nVersion >> 16 ) == 3 )
&& lcl_wontoverflow(nPageSize)
&& lcl_wontoverflow(nDataPageSize);
}
sal_Int32 StgHeader::GetFATPage( short n ) const
{
if( n >= 0 && n < 109 )
return nMasterFAT[ n ];
else
return STG_EOF;
}
void StgHeader::SetFATPage( short n, sal_Int32 nb )
{
if( n >= 0 && n < 109 )
{
if( nMasterFAT[ n ] != nb )
bDirty = sal_True, nMasterFAT[ n ] = nb;
}
}
void StgHeader::SetClassId( const ClsId& r )
{
if( memcmp( &aClsId, &r, sizeof( ClsId ) ) )
bDirty = sal_True, memcpy( &aClsId, &r, sizeof( ClsId ) );
}
void StgHeader::SetTOCStart( sal_Int32 n )
{
if( n != nTOCstrm ) bDirty = sal_True, nTOCstrm = n;
}
void StgHeader::SetDataFATStart( sal_Int32 n )
{
if( n != nDataFAT ) bDirty = sal_True, nDataFAT = n;
}
void StgHeader::SetDataFATSize( sal_Int32 n )
{
if( n != nDataFATSize ) bDirty = sal_True, nDataFATSize = n;
}
void StgHeader::SetFATSize( sal_Int32 n )
{
if( n != nFATSize ) bDirty = sal_True, nFATSize = n;
}
void StgHeader::SetFATChain( sal_Int32 n )
{
if( n != nMasterChain )
bDirty = sal_True, nMasterChain = n;
}
void StgHeader::SetMasters( sal_Int32 n )
{
if( n != nMaster ) bDirty = sal_True, nMaster = n;
}
///////////////////////////// class StgEntry /////////////////////////////
// This class is only a wrapper around teh dir entry structure
// which retrieves and sets data.
// The name must be smaller than 32 chars. Conversion into Unicode
// is easy, since the 1st 256 characters of the Windows ANSI set
// equal the 1st 256 Unicode characters.
/*
void ToUnicode_Impl( String& rName )
{
rName.Erase( 32 );
rName.Convert( ::GetSystemCharSet(), CHARSET_ANSI );
// brute force is OK
sal_uInt8* p = (sal_uInt8*) rName.GetCharStr();
for( sal_uInt16 i = 0; i < rName.Len(); i++, p++ )
{
// check each character and substitute blanks for illegal ones
sal_uInt8 cChar = *p;
if( cChar == '!' || cChar == ':' || cChar == '\\' || cChar == '/' )
*p = ' ';
}
}
*/
/*
static void FromUnicode( String& rName )
{
rName.Convert( CHARSET_ANSI, ::GetSystemCharSet() );
}
*/
sal_Bool StgEntry::Init()
{
memset( this, 0, sizeof (StgEntry) - sizeof( String ) );
SetLeaf( STG_LEFT, STG_FREE );
SetLeaf( STG_RIGHT, STG_FREE );
SetLeaf( STG_CHILD, STG_FREE );
SetLeaf( STG_DATA, STG_EOF );
return sal_True;
}
static String ToUpperUnicode( const String & rStr )
{
// I don't know the locale, so en_US is hopefully fine
/*
com.sun.star.lang.Locale aLocale;
aLocale.Language = OUString::createFromAscii( "en" );
aLocale.Country = OUString::createFromAscii( "US" );
*/
static rtl::OUString aEN=rtl::OUString::createFromAscii( "en" );
static rtl::OUString aUS=rtl::OUString::createFromAscii( "US" );
static CharClass aCC( com::sun::star::lang::Locale( aEN, aUS, rtl::OUString() ) );
return aCC.toUpper( rStr, 0, rStr.Len() );
}
sal_Bool StgEntry::SetName( const String& rName )
{
// I don't know the locale, so en_US is hopefully fine
aName = ToUpperUnicode( rName );
aName.Erase( 31 );
int i;
for( i = 0; i < aName.Len() && i < 32; i++ )
nName[ i ] = rName.GetChar( sal_uInt16( i ));
while( i < 32 )
nName[ i++ ] = 0;
nNameLen = ( aName.Len() + 1 ) << 1;
return sal_True;
}
sal_Int32 StgEntry::GetLeaf( StgEntryRef eRef ) const
{
sal_Int32 n = -1;
switch( eRef )
{
case STG_LEFT: n = nLeft; break;
case STG_RIGHT: n = nRight; break;
case STG_CHILD: n = nChild; break;
case STG_DATA: n = nPage1; break;
}
return n;
}
void StgEntry::SetLeaf( StgEntryRef eRef, sal_Int32 nPage )
{
switch( eRef )
{
case STG_LEFT: nLeft = nPage; break;
case STG_RIGHT: nRight = nPage; break;
case STG_CHILD: nChild = nPage; break;
case STG_DATA: nPage1 = nPage; break;
}
}
const sal_Int32* StgEntry::GetTime( StgEntryTime eTime ) const
{
return( eTime == STG_MODIFIED ) ? nMtime : nAtime;
}
void StgEntry::SetTime( StgEntryTime eTime, sal_Int32* pTime )
{
if( eTime == STG_MODIFIED )
nMtime[ 0 ] = *pTime++, nMtime[ 1 ] = *pTime;
else
nAtime[ 0 ] = *pTime++, nAtime[ 1 ] = *pTime;
}
void StgEntry::SetClassId( const ClsId& r )
{
memcpy( &aClsId, &r, sizeof( ClsId ) );
}
void StgEntry::GetName( String& rName ) const
{
sal_uInt16 n = nNameLen;
if( n )
n = ( n >> 1 ) - 1;
rName = String( nName, n );
}
// Compare two entries. Do this case-insensitive.
short StgEntry::Compare( const StgEntry& r ) const
{
/*
short nRes = r.nNameLen - nNameLen;
if( !nRes ) return strcmp( r.aName, aName );
else return nRes;
*/
sal_Int32 nRes = r.nNameLen - nNameLen;
if( !nRes )
nRes = r.aName.CompareTo( aName );
return (short)nRes;
//return aName.CompareTo( r.aName );
}
// These load/store operations are a bit more complicated,
// since they have to copy their contents into a packed structure.
sal_Bool StgEntry::Load( const void* pFrom )
{
SvMemoryStream r( (sal_Char*) pFrom, 128, STREAM_READ );
for( short i = 0; i < 32; i++ )
r >> nName[ i ]; // 00 name as WCHAR
r >> nNameLen // 40 size of name in bytes including 00H
>> cType // 42 entry type
>> cFlags // 43 0 or 1 (tree balance?)
>> nLeft // 44 left node entry
>> nRight // 48 right node entry
>> nChild // 4C 1st child entry if storage
>> aClsId // 50 class ID (optional)
>> nFlags // 60 state flags(?)
>> nMtime[ 0 ] // 64 modification time
>> nMtime[ 1 ] // 64 modification time
>> nAtime[ 0 ] // 6C creation and access time
>> nAtime[ 1 ] // 6C creation and access time
>> nPage1 // 74 starting block (either direct or translated)
>> nSize // 78 file size
>> nUnknown; // 7C unknown
sal_uInt16 n = nNameLen;
if( n )
n = ( n >> 1 ) - 1;
if( n > 31 || (nSize < 0 && cType != STG_STORAGE) )
{
// the size makes no sence for the substorage
// TODO/LATER: actually the size should be an unsigned value, but in this case it would mean a stream of more than 2Gb
return sal_False;
}
aName = String( nName, n );
// I don't know the locale, so en_US is hopefully fine
aName = ToUpperUnicode( aName );
aName.Erase( 31 );
return sal_True;
}
void StgEntry::Store( void* pTo )
{
SvMemoryStream r( (sal_Char *)pTo, 128, STREAM_WRITE );
for( short i = 0; i < 32; i++ )
r << nName[ i ]; // 00 name as WCHAR
r << nNameLen // 40 size of name in bytes including 00H
<< cType // 42 entry type
<< cFlags // 43 0 or 1 (tree balance?)
<< nLeft // 44 left node entry
<< nRight // 48 right node entry
<< nChild // 4C 1st child entry if storage;
<< aClsId // 50 class ID (optional)
<< nFlags // 60 state flags(?)
<< nMtime[ 0 ] // 64 modification time
<< nMtime[ 1 ] // 64 modification time
<< nAtime[ 0 ] // 6C creation and access time
<< nAtime[ 1 ] // 6C creation and access time
<< nPage1 // 74 starting block (either direct or translated)
<< nSize // 78 file size
<< nUnknown; // 7C unknown
}
|