/* * Compound Storage (32 bit version) * * Implemented using the documentation of the LAOLA project at * * (Thanks to Martin Schwartz ) * * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #ifndef __STORAGE32_H__ #define __STORAGE32_H__ #include #include "windef.h" #include "winbase.h" #include "winnt.h" #include "objbase.h" #include "winreg.h" #include "winternl.h" #include "wine/list.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_STGTYPE = 0x00000042; static const ULONG OFFSET_PS_LEFTCHILD = 0x00000044; static const ULONG OFFSET_PS_RIGHTCHILD = 0x00000048; static const ULONG OFFSET_PS_DIRROOT = 0x0000004C; static const ULONG OFFSET_PS_GUID = 0x00000050; static const ULONG OFFSET_PS_CTIMELOW = 0x00000064; static const ULONG OFFSET_PS_CTIMEHIGH = 0x00000068; static const ULONG OFFSET_PS_MTIMELOW = 0x0000006C; static const ULONG OFFSET_PS_MTIMEHIGH = 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 DIRENTRY_NULL = 0xFFFFFFFF; #define DIRENTRY_NAME_MAX_LEN 0x20 #define DIRENTRY_NAME_BUFFER_LEN 0x40 #define RAW_DIRENTRY_SIZE 0x00000080 /* * Type of child entry link */ #define DIRENTRY_RELATION_PREVIOUS 0 #define DIRENTRY_RELATION_NEXT 1 #define DIRENTRY_RELATION_DIR 2 /* * type constant used in files for the root storage */ #define STGTY_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) /* * Forward declarations of all the structures used by the storage * module. */ typedef struct StorageBaseImpl StorageBaseImpl; typedef struct StorageBaseImplVtbl StorageBaseImplVtbl; typedef struct StorageImpl StorageImpl; typedef struct BlockChainStream BlockChainStream; typedef struct SmallBlockChainStream SmallBlockChainStream; typedef struct IEnumSTATSTGImpl IEnumSTATSTGImpl; typedef struct DirEntry DirEntry; typedef struct StgStreamImpl StgStreamImpl; /* * A reference to a directory entry in the file or a transacted cache. */ typedef ULONG DirRef; /* * This utility structure is used to read/write the information in a directory * entry. */ struct DirEntry { WCHAR name[DIRENTRY_NAME_MAX_LEN]; WORD sizeOfNameString; BYTE stgType; DirRef leftChild; DirRef rightChild; DirRef dirRootEntry; GUID clsid; FILETIME ctime; FILETIME mtime; 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 */ typedef struct BigBlockFile BigBlockFile,*LPBIGBLOCKFILE; /* * 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); HRESULT BIGBLOCKFILE_EnsureExists(LPBIGBLOCKFILE This, ULONG index); HRESULT BIGBLOCKFILE_SetSize(LPBIGBLOCKFILE This, ULARGE_INTEGER newSize); HRESULT BIGBLOCKFILE_ReadAt(LPBIGBLOCKFILE This, ULARGE_INTEGER offset, void* buffer, ULONG size, ULONG* bytesRead); HRESULT BIGBLOCKFILE_WriteAt(LPBIGBLOCKFILE This, ULARGE_INTEGER offset, const void* buffer, ULONG size, ULONG* bytesRead); /************************************************************************* * 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 */ /* * Stream tracking list */ struct list strmHead; /* * Storage tracking list */ struct list storageHead; /* * Reference count of this object */ LONG ref; /* * TRUE if this object has been invalidated */ int reverted; /* * Index of the directory entry of this storage */ DirRef storageDirEntry; /* * virtual methods. */ const StorageBaseImplVtbl *baseVtbl; /* * flags that this storage was opened or created with */ DWORD openFlags; /* * State bits appear to only be preserved while running. No in the stream */ DWORD stateBits; /* If set, this overrides the root storage name returned by IStorage_Stat */ LPCWSTR filename; BOOL create; /* Was the storage created or opened. The behaviour of STGM_SIMPLE depends on this */ }; /* virtual methods for StorageBaseImpl objects */ struct StorageBaseImplVtbl { void (*Destroy)(StorageBaseImpl*); void (*Invalidate)(StorageBaseImpl*); HRESULT (*CreateDirEntry)(StorageBaseImpl*,const DirEntry*,DirRef*); HRESULT (*WriteDirEntry)(StorageBaseImpl*,DirRef,const DirEntry*); HRESULT (*ReadDirEntry)(StorageBaseImpl*,DirRef,DirEntry*); HRESULT (*DestroyDirEntry)(StorageBaseImpl*,DirRef); HRESULT (*StreamReadAt)(StorageBaseImpl*,DirRef,ULARGE_INTEGER,ULONG,void*,ULONG*); HRESULT (*StreamWriteAt)(StorageBaseImpl*,DirRef,ULARGE_INTEGER,ULONG,const void*,ULONG*); HRESULT (*StreamSetSize)(StorageBaseImpl*,DirRef,ULARGE_INTEGER); }; static inline void StorageBaseImpl_Destroy(StorageBaseImpl *This) { This->baseVtbl->Destroy(This); } static inline void StorageBaseImpl_Invalidate(StorageBaseImpl *This) { This->baseVtbl->Invalidate(This); } static inline HRESULT StorageBaseImpl_CreateDirEntry(StorageBaseImpl *This, const DirEntry *newData, DirRef *index) { return This->baseVtbl->CreateDirEntry(This, newData, index); } static inline HRESULT StorageBaseImpl_WriteDirEntry(StorageBaseImpl *This, DirRef index, const DirEntry *data) { return This->baseVtbl->WriteDirEntry(This, index, data); } static inline HRESULT StorageBaseImpl_ReadDirEntry(StorageBaseImpl *This, DirRef index, DirEntry *data) { return This->baseVtbl->ReadDirEntry(This, index, data); } static inline HRESULT StorageBaseImpl_DestroyDirEntry(StorageBaseImpl *This, DirRef index) { return This->baseVtbl->DestroyDirEntry(This, index); } /* Read up to size bytes from this directory entry's stream at the given offset. */ static inline HRESULT StorageBaseImpl_StreamReadAt(StorageBaseImpl *This, DirRef index, ULARGE_INTEGER offset, ULONG size, void *buffer, ULONG *bytesRead) { return This->baseVtbl->StreamReadAt(This, index, offset, size, buffer, bytesRead); } /* Write size bytes to this directory entry's stream at the given offset, * growing the stream if necessary. */ static inline HRESULT StorageBaseImpl_StreamWriteAt(StorageBaseImpl *This, DirRef index, ULARGE_INTEGER offset, ULONG size, const void *buffer, ULONG *bytesWritten) { return This->baseVtbl->StreamWriteAt(This, index, offset, size, buffer, bytesWritten); } static inline HRESULT StorageBaseImpl_StreamSetSize(StorageBaseImpl *This, DirRef index, ULARGE_INTEGER newsize) { return This->baseVtbl->StreamSetSize(This, index, newsize); } /**************************************************************************** * StorageBaseImpl stream list handlers */ void StorageBaseImpl_AddStream(StorageBaseImpl * stg, StgStreamImpl * strm); void StorageBaseImpl_RemoveStream(StorageBaseImpl * stg, StgStreamImpl * strm); /**************************************************************************** * 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 */ /* * 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; }; HRESULT StorageImpl_ReadRawDirEntry( StorageImpl *This, ULONG index, BYTE *buffer); void UpdateRawDirEntry( BYTE *buffer, const DirEntry *newData); HRESULT StorageImpl_WriteRawDirEntry( StorageImpl *This, ULONG index, const BYTE *buffer); HRESULT StorageImpl_ReadDirEntry( StorageImpl* This, DirRef index, DirEntry* buffer); HRESULT StorageImpl_WriteDirEntry( StorageImpl* This, DirRef index, const DirEntry* buffer); BlockChainStream* Storage32Impl_SmallBlocksToBigBlocks( StorageImpl* This, SmallBlockChainStream** ppsbChain); SmallBlockChainStream* Storage32Impl_BigBlocksToSmallBlocks( StorageImpl* This, BlockChainStream** ppbbChain); /**************************************************************************** * StgStreamImpl definitions. * * This class implements the IStream32 interface and represents a stream * located inside a storage object. */ struct StgStreamImpl { const IStreamVtbl *lpVtbl; /* Needs to be the first item in the struct * since we want to cast this to an IStream pointer */ /* * We are an entry in the storage object's stream handler list */ struct list StrmListEntry; /* * Reference count */ LONG ref; /* * Storage that is the parent(owner) of the stream */ StorageBaseImpl* parentStorage; /* * Access mode of this stream. */ DWORD grfMode; /* * Index of the directory entry that owns (points to) this stream. */ DirRef dirEntry; /* * This is the current position of the cursor in the stream */ ULARGE_INTEGER currentPosition; }; /* * Method definition for the StgStreamImpl class. */ StgStreamImpl* StgStreamImpl_Construct( StorageBaseImpl* parentStorage, DWORD grfMode, DirRef dirEntry); /****************************************************************************** * Endian conversion macros */ #ifdef WORDS_BIGENDIAN #define htole32(x) RtlUlongByteSwap(x) #define htole16(x) RtlUshortByteSwap(x) #define lendian32toh(x) RtlUlongByteSwap(x) #define lendian16toh(x) RtlUshortByteSwap(x) #else #define htole32(x) (x) #define htole16(x) (x) #define lendian32toh(x) (x) #define lendian16toh(x) (x) #endif /****************************************************************************** * The StorageUtl_ functions are miscellaneous utility functions. Most of which * are abstractions used to read values from file buffers without having to * worry about bit order */ void StorageUtl_ReadWord(const BYTE* buffer, ULONG offset, WORD* value); void StorageUtl_WriteWord(BYTE* buffer, ULONG offset, WORD value); void StorageUtl_ReadDWord(const BYTE* buffer, ULONG offset, DWORD* value); void StorageUtl_WriteDWord(BYTE* buffer, ULONG offset, DWORD value); void StorageUtl_ReadULargeInteger(const BYTE* buffer, ULONG offset, ULARGE_INTEGER* value); void StorageUtl_WriteULargeInteger(BYTE* buffer, ULONG offset, const ULARGE_INTEGER *value); void StorageUtl_ReadGUID(const BYTE* buffer, ULONG offset, GUID* value); void StorageUtl_WriteGUID(BYTE* buffer, ULONG offset, const GUID* value); void StorageUtl_CopyDirEntryToSTATSTG(StorageBaseImpl *storage,STATSTG* destination, const DirEntry* source, int statFlags); /**************************************************************************** * BlockChainStream definitions. * * The BlockChainStream class is a utility class that is used to create an * abstraction of the big block chains in the storage file. */ struct BlockChainStream { StorageImpl* parentStorage; ULONG* headOfStreamPlaceHolder; DirRef ownerDirEntry; ULONG lastBlockNoInSequence; ULONG lastBlockNoInSequenceIndex; ULONG tailIndex; ULONG numBlocks; }; /* * Methods for the BlockChainStream class. */ BlockChainStream* BlockChainStream_Construct( StorageImpl* parentStorage, ULONG* headOfStreamPlaceHolder, DirRef dirEntry); void BlockChainStream_Destroy( BlockChainStream* This); HRESULT BlockChainStream_ReadAt( BlockChainStream* This, ULARGE_INTEGER offset, ULONG size, void* buffer, ULONG* bytesRead); HRESULT BlockChainStream_WriteAt( BlockChainStream* This, ULARGE_INTEGER offset, ULONG size, const void* buffer, ULONG* bytesWritten); BOOL BlockChainStream_SetSize( BlockChainStream* This, ULARGE_INTEGER newSize); /**************************************************************************** * SmallBlockChainStream definitions. * * The SmallBlockChainStream class is a utility class that is used to create an * abstraction of the small block chains in the storage file. */ struct SmallBlockChainStream { StorageImpl* parentStorage; DirRef ownerDirEntry; ULONG* headOfStreamPlaceHolder; }; /* * Methods of the SmallBlockChainStream class. */ SmallBlockChainStream* SmallBlockChainStream_Construct( StorageImpl* parentStorage, ULONG* headOfStreamPlaceHolder, DirRef dirEntry); void SmallBlockChainStream_Destroy( SmallBlockChainStream* This); HRESULT SmallBlockChainStream_ReadAt( SmallBlockChainStream* This, ULARGE_INTEGER offset, ULONG size, void* buffer, ULONG* bytesRead); HRESULT SmallBlockChainStream_WriteAt( SmallBlockChainStream* This, ULARGE_INTEGER offset, ULONG size, const void* buffer, ULONG* bytesWritten); BOOL SmallBlockChainStream_SetSize( SmallBlockChainStream* This, ULARGE_INTEGER newSize); #endif /* __STORAGE32_H__ */