📄 storage32.h
字号:
/*
* Compound Storage (32 bit version)
*
* Implemented using the documentation of the LAOLA project at
* <URL:http://wwwwbs.cs.tu-berlin.de/~schwartz/pmh/index.html>
* (Thanks to Martin Schwartz <schwartz@cs.tu-berlin.de>)
*
* This include file contains definitions of types and function
* prototypes that are used in the many files implementing the
* storage functionality
*
* Copyright 1998,1999 Francis Beaudet
* Copyright 1998,1999 Thuy Nguyen
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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
*/
#ifndef __STORAGE32_H__
#define __STORAGE32_H__
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winnt.h"
#include "objbase.h"
#include "winreg.h"
#include "winternl.h"
/*
* Definitions for the file format offsets.
*/
static const ULONG OFFSET_BIGBLOCKSIZEBITS = 0x0000001e;
static const ULONG OFFSET_SMALLBLOCKSIZEBITS = 0x00000020;
static const ULONG OFFSET_BBDEPOTCOUNT = 0x0000002C;
static const ULONG OFFSET_ROOTSTARTBLOCK = 0x00000030;
static const ULONG OFFSET_SBDEPOTSTART = 0x0000003C;
static const ULONG OFFSET_SBDEPOTCOUNT = 0x00000040;
static const ULONG OFFSET_EXTBBDEPOTSTART = 0x00000044;
static const ULONG OFFSET_EXTBBDEPOTCOUNT = 0x00000048;
static const ULONG OFFSET_BBDEPOTSTART = 0x0000004C;
static const ULONG OFFSET_PS_NAME = 0x00000000;
static const ULONG OFFSET_PS_NAMELENGTH = 0x00000040;
static const ULONG OFFSET_PS_PROPERTYTYPE = 0x00000042;
static const ULONG OFFSET_PS_PREVIOUSPROP = 0x00000044;
static const ULONG OFFSET_PS_NEXTPROP = 0x00000048;
static const ULONG OFFSET_PS_DIRPROP = 0x0000004C;
static const ULONG OFFSET_PS_GUID = 0x00000050;
static const ULONG OFFSET_PS_TSS1 = 0x00000064;
static const ULONG OFFSET_PS_TSD1 = 0x00000068;
static const ULONG OFFSET_PS_TSS2 = 0x0000006C;
static const ULONG OFFSET_PS_TSD2 = 0x00000070;
static const ULONG OFFSET_PS_STARTBLOCK = 0x00000074;
static const ULONG OFFSET_PS_SIZE = 0x00000078;
static const WORD DEF_BIG_BLOCK_SIZE_BITS = 0x0009;
static const WORD DEF_SMALL_BLOCK_SIZE_BITS = 0x0006;
static const WORD DEF_BIG_BLOCK_SIZE = 0x0200;
static const WORD DEF_SMALL_BLOCK_SIZE = 0x0040;
static const ULONG BLOCK_EXTBBDEPOT = 0xFFFFFFFC;
static const ULONG BLOCK_SPECIAL = 0xFFFFFFFD;
static const ULONG BLOCK_END_OF_CHAIN = 0xFFFFFFFE;
static const ULONG BLOCK_UNUSED = 0xFFFFFFFF;
static const ULONG PROPERTY_NULL = 0xFFFFFFFF;
#define PROPERTY_NAME_MAX_LEN 0x20
#define PROPERTY_NAME_BUFFER_LEN 0x40
#define PROPSET_BLOCK_SIZE 0x00000080
/*
* Property type of relation
*/
#define PROPERTY_RELATION_PREVIOUS 0
#define PROPERTY_RELATION_NEXT 1
#define PROPERTY_RELATION_DIR 2
/*
* Property type constants
*/
#define PROPTYPE_STORAGE 0x01
#define PROPTYPE_STREAM 0x02
#define PROPTYPE_ROOT 0x05
/*
* These defines assume a hardcoded blocksize. The code will assert
* if the blocksize is different. Some changes will have to be done if it
* becomes the case.
*/
#define BIG_BLOCK_SIZE 0x200
#define COUNT_BBDEPOTINHEADER 109
#define LIMIT_TO_USE_SMALL_BLOCK 0x1000
#define NUM_BLOCKS_PER_DEPOT_BLOCK 128
#define STGM_ACCESS_MODE(stgm) ((stgm)&0x0000f)
#define STGM_SHARE_MODE(stgm) ((stgm)&0x000f0)
#define STGM_CREATE_MODE(stgm) ((stgm)&0x0f000)
#define STGM_KNOWN_FLAGS (0xf0ff | \
STGM_TRANSACTED | STGM_CONVERT | STGM_PRIORITY | STGM_NOSCRATCH | \
STGM_NOSNAPSHOT | STGM_DIRECT_SWMR | STGM_DELETEONRELEASE | STGM_SIMPLE)
/*
* These are signatures to detect the type of Document file.
*/
static const BYTE STORAGE_magic[8] ={0xd0,0xcf,0x11,0xe0,0xa1,0xb1,0x1a,0xe1};
static const BYTE STORAGE_oldmagic[8] ={0xd0,0xcf,0x11,0xe0,0x0e,0x11,0xfc,0x0d};
/*
* Forward declarations of all the structures used by the storage
* module.
*/
typedef struct StorageBaseImpl StorageBaseImpl;
typedef struct StorageImpl StorageImpl;
typedef struct StorageInternalImpl StorageInternalImpl;
typedef struct BlockChainStream BlockChainStream;
typedef struct SmallBlockChainStream SmallBlockChainStream;
typedef struct IEnumSTATSTGImpl IEnumSTATSTGImpl;
typedef struct StgProperty StgProperty;
typedef struct StgStreamImpl StgStreamImpl;
/*
* This utility structure is used to read/write the information in a storage
* property.
*/
struct StgProperty
{
WCHAR name[PROPERTY_NAME_MAX_LEN];
WORD sizeOfNameString;
BYTE propertyType;
ULONG previousProperty;
ULONG nextProperty;
ULONG dirProperty;
GUID propertyUniqueID;
ULONG timeStampS1;
ULONG timeStampD1;
ULONG timeStampS2;
ULONG timeStampD2;
ULONG startingBlock;
ULARGE_INTEGER size;
};
/*************************************************************************
* Big Block File support
*
* The big block file is an abstraction of a flat file separated in
* same sized blocks. The implementation for the methods described in
* this section appear in stg_bigblockfile.c
*/
/*
* Declaration of the data structures
*/
typedef struct BigBlockFile BigBlockFile,*LPBIGBLOCKFILE;
typedef struct MappedPage MappedPage,*LPMAPPEDPAGE;
struct BigBlockFile
{
BOOL fileBased;
ULARGE_INTEGER filesize;
ULONG blocksize;
HANDLE hfile;
HANDLE hfilemap;
DWORD flProtect;
MappedPage *maplist;
MappedPage *victimhead, *victimtail;
ULONG num_victim_pages;
ILockBytes *pLkbyt;
HGLOBAL hbytearray;
LPVOID pbytearray;
};
/*
* Declaration of the functions used to manipulate the BigBlockFile
* data structure.
*/
BigBlockFile* BIGBLOCKFILE_Construct(HANDLE hFile,
ILockBytes* pLkByt,
DWORD openFlags,
ULONG blocksize,
BOOL fileBased);
void BIGBLOCKFILE_Destructor(LPBIGBLOCKFILE This);
void* BIGBLOCKFILE_GetBigBlock(LPBIGBLOCKFILE This, ULONG index);
void* BIGBLOCKFILE_GetROBigBlock(LPBIGBLOCKFILE This, ULONG index);
void BIGBLOCKFILE_ReleaseBigBlock(LPBIGBLOCKFILE This, void *pBlock);
void BIGBLOCKFILE_SetSize(LPBIGBLOCKFILE This, ULARGE_INTEGER newSize);
ULARGE_INTEGER BIGBLOCKFILE_GetSize(LPBIGBLOCKFILE This);
/*************************************************************************
* Ole Convert support
*/
void OLECONVERT_CreateOleStream(LPSTORAGE pStorage);
HRESULT OLECONVERT_CreateCompObjStream(LPSTORAGE pStorage, LPCSTR strOleTypeName);
/****************************************************************************
* Storage32BaseImpl definitions.
*
* This structure defines the base information contained in all implementations
* of IStorage32 contained in this file storage implementation.
*
* In OOP terms, this is the base class for all the IStorage32 implementations
* contained in this file.
*/
struct StorageBaseImpl
{
const IStorageVtbl *lpVtbl; /* Needs to be the first item in the struct
* since we want to cast this in a Storage32 pointer */
const IPropertySetStorageVtbl *pssVtbl; /* interface for adding a properties stream */
/*
* Reference count of this object
*/
LONG ref;
/*
* Ancestor storage (top level)
*/
StorageImpl* ancestorStorage;
/*
* Index of the property for the root of
* this storage
*/
ULONG rootPropertySetIndex;
/*
* virtual Destructor method.
*/
void (*v_destructor)(StorageBaseImpl*);
/*
* flags that this storage was opened or created with
*/
DWORD openFlags;
};
/****************************************************************************
* Storage32Impl definitions.
*
* This implementation of the IStorage32 interface represents a root
* storage. Basically, a document file.
*/
struct StorageImpl
{
struct StorageBaseImpl base;
/*
* The following data members are specific to the Storage32Impl
* class
*/
HANDLE hFile; /* Physical support for the Docfile */
LPOLESTR pwcsName; /* Full path of the document file */
/* FIXME: should this be in Storage32BaseImpl ? */
WCHAR filename[PROPERTY_NAME_BUFFER_LEN];
/*
* File header
*/
WORD bigBlockSizeBits;
WORD smallBlockSizeBits;
ULONG bigBlockSize;
ULONG smallBlockSize;
ULONG bigBlockDepotCount;
ULONG rootStartBlock;
ULONG smallBlockDepotStart;
ULONG extBigBlockDepotStart;
ULONG extBigBlockDepotCount;
ULONG bigBlockDepotStart[COUNT_BBDEPOTINHEADER];
ULONG blockDepotCached[NUM_BLOCKS_PER_DEPOT_BLOCK];
ULONG indexBlockDepotCached;
ULONG prevFreeBlock;
/*
* Abstraction of the big block chains for the chains of the header.
*/
BlockChainStream* rootBlockChain;
BlockChainStream* smallBlockDepotChain;
BlockChainStream* smallBlockRootChain;
/*
* Pointer to the big block file abstraction
*/
BigBlockFile* bigBlockFile;
};
void StorageImpl_Destroy(
StorageBaseImpl* This);
HRESULT StorageImpl_Construct(
StorageImpl* This,
HANDLE hFile,
LPCOLESTR pwcsName,
ILockBytes* pLkbyt,
DWORD openFlags,
BOOL fileBased,
BOOL fileCreate);
BOOL StorageImpl_ReadBigBlock(
StorageImpl* This,
ULONG blockIndex,
void* buffer);
BOOL StorageImpl_WriteBigBlock(
StorageImpl* This,
ULONG blockIndex,
void* buffer);
void* StorageImpl_GetROBigBlock(
StorageImpl* This,
ULONG blockIndex);
void* StorageImpl_GetBigBlock(
StorageImpl* This,
ULONG blockIndex);
void StorageImpl_ReleaseBigBlock(
StorageImpl* This,
void* pBigBlock);
ULONG StorageImpl_GetNextFreeBigBlock(
StorageImpl* This);
void StorageImpl_FreeBigBlock(
StorageImpl* This,
ULONG blockIndex);
HRESULT StorageImpl_GetNextBlockInChain(
StorageImpl* This,
ULONG blockIndex,
ULONG* nextBlockIndex);
void StorageImpl_SetNextBlockInChain(
StorageImpl* This,
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -