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/* Compound Storage
*
* 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>)
*
* Copyright 1998 Marcus Meissner
*
* 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
*/
#include "config.h"
#include <assert.h>
#include <time.h>
#include <stdarg.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winternl.h"
#include "winerror.h"
#include "wine/winbase16.h"
#include "wownt32.h"
#include "wine/unicode.h"
#include "objbase.h"
#include "wine/debug.h"
#include "ifs.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
WINE_DECLARE_DEBUG_CHANNEL(relay);
struct storage_header {
BYTE magic[8]; /* 00: magic */
BYTE unknown1[36]; /* 08: unknown */
DWORD num_of_bbd_blocks;/* 2C: length of big datablocks */
DWORD root_startblock;/* 30: root storage first big block */
DWORD unknown2[2]; /* 34: unknown */
DWORD sbd_startblock; /* 3C: small block depot first big block */
DWORD unknown3[3]; /* 40: unknown */
DWORD bbd_list[109]; /* 4C: big data block list (up to end of sector)*/
};
struct storage_pps_entry {
WCHAR pps_rawname[32];/* 00: \0 terminated widechar name */
WORD pps_sizeofname; /* 40: namelength in bytes */
BYTE pps_type; /* 42: flags, 1 storage/dir, 2 stream, 5 root */
BYTE pps_unknown0; /* 43: unknown */
DWORD pps_prev; /* 44: previous pps */
DWORD pps_next; /* 48: next pps */
DWORD pps_dir; /* 4C: directory pps */
GUID pps_guid; /* 50: class ID */
DWORD pps_unknown1; /* 60: unknown */
FILETIME pps_ft1; /* 64: filetime1 */
FILETIME pps_ft2; /* 70: filetime2 */
DWORD pps_sb; /* 74: data startblock */
DWORD pps_size; /* 78: datalength. (<0x1000)?small:big blocks*/
DWORD pps_unknown2; /* 7C: unknown */
};
#define STORAGE_CHAINENTRY_FAT 0xfffffffd
#define STORAGE_CHAINENTRY_ENDOFCHAIN 0xfffffffe
#define STORAGE_CHAINENTRY_FREE 0xffffffff
static const BYTE STORAGE_magic[8] ={0xd0,0xcf,0x11,0xe0,0xa1,0xb1,0x1a,0xe1};
#define BIGSIZE 512
#define SMALLSIZE 64
#define SMALLBLOCKS_PER_BIGBLOCK (BIGSIZE/SMALLSIZE)
#define READ_HEADER STORAGE_get_big_block(hf,-1,(LPBYTE)&sth);assert(!memcmp(STORAGE_magic,sth.magic,sizeof(STORAGE_magic)));
static IStorage16Vtbl stvt16;
static IStorage16Vtbl *segstvt16 = NULL;
static IStream16Vtbl strvt16;
static IStream16Vtbl *segstrvt16 = NULL;
/*ULONG WINAPI IStorage16_AddRef(LPSTORAGE16 this);*/
static void _create_istorage16(LPSTORAGE16 *stg);
static void _create_istream16(LPSTREAM16 *str);
#define IMPLEMENTED 1
/* The following is taken from the CorVu implementation of docfiles, and
* documents things about the file format that are not implemented here, and
* not documented by the LAOLA project. The CorVu implementation was posted
* to wine-devel in February 2004, and released under the LGPL at the same
* time. Because that implementation is in C++, it's not directly usable in
* Wine, but does have documentation value.
*
*
* #define DF_EXT_VTOC -4
* #define DF_VTOC_VTOC -3
* #define DF_VTOC_EOF -2
* #define DF_VTOC_FREE -1
* #define DF_NAMELEN 0x20 // Maximum entry name length - 31 characters plus
* // a NUL terminator
*
* #define DF_FT_STORAGE 1
* #define DF_FT_STREAM 2
* #define DF_FT_LOCKBYTES 3 // Not used -- How the bloody hell did I manage
* #define DF_FT_PROPERTY 4 // Not Used -- to figure these two out?
* #define DF_FT_ROOT 5
*
* #define DF_BLOCK_SIZE 0x200
* #define DF_VTOC_SIZE 0x80
* #define DF_DE_PER_BLOCK 4
* #define DF_STREAM_BLOCK_SIZE 0x40
*
* A DocFile is divided into blocks of 512 bytes.
* The first block contains the header.
*
* The file header contains The first 109 entries in the VTOC of VTOCs.
*
* Each block pointed to by a VTOC of VTOCs contains a VTOC, which
* includes block chains - just like FAT. This is a somewhat poor
* design for the following reasons:
*
* 1. FAT was a poor file system design to begin with, and
* has long been known to be horrendously inefficient
* for day to day operations.
*
* 2. The problem is compounded here, since the file
* level streams are generally *not* read sequentially.
* This means that a significant percentage of reads
* require seeking from the start of the chain.
*
* Data chains also contain an internal VTOC. The block size for
* the standard VTOC is 512. The block size for the internal VTOC
* is 64.
*
* Now, the 109 blocks in the VTOC of VTOCs allows for files of
* up to around 7MB. So what do you think happens if that's
* exceeded? Well, there's an entry in the header block which
* points to the first block used as additional storage for
* the VTOC of VTOCs.
*
* Now we can get up to around 15MB. Now, guess how the file
* format adds in another block to the VTOC of VTOCs. Come on,
* it's no big surprise. That's right - the last entry in each
* block extending the VTOC of VTOCs is, you guessed it, the
* block number of the next block containing an extension to
* the VTOC of VTOCs. The VTOC of VTOCs is chained!!!!
*
* So, to review:
*
* 1. If you are using a FAT file system, the location of
* your file's blocks is stored in chains.
*
* 2. At the abstract level, the file contains a VTOC of VTOCs,
* which is stored in the most inefficient possible format for
* random access - a chain (AKA list).
*
* 3. The VTOC of VTOCs contains descriptions of three file level
* streams:
*
* a. The Directory stream
* b. The Data stream
* c. The Data VTOC stream
*
* These are, of course, represented as chains.
*
* 4. The Data VTOC contains data describing the chains of blocks
* within the Data stream.
*
* That's right - we have a total of four levels of block chains!
*
* Now, is that complicated enough for you? No? OK, there's another
* complication. If an individual stream (ie. an IStream) reaches
* 4096 bytes in size, it gets moved from the Data Stream to
* a new file level stream. Now, if the stream then gets truncated
* back to less than 4096 bytes, it returns to the data stream.
*
* The effect of using this format can be seen very easily. Pick
* an arbitrary application with a grid data representation that
* can export to both Lotus 123 and Excel 5 or higher. Export
* a large file to Lotus 123 and time it. Export the same thing
* to Excel 5 and time that. The difference is the inefficiency
* of the Microsoft DocFile format.
*
*
* #define TOTAL_SIMPLE_VTOCS 109
*
* struct DocFile_Header
* {
* df_byte iMagic1; // 0xd0
* df_byte iMagic2; // 0xcf
* df_byte iMagic3; // 0x11
* df_byte iMagic4; // 0xe0 - Spells D0CF11E0, or DocFile
* df_byte iMagic5; // 161 (igi upside down)
* df_byte iMagic6; // 177 (lli upside down - see below
* df_byte iMagic7; // 26 (gz upside down)
* df_byte iMagic8; // 225 (szz upside down) - see below
* df_int4 aiUnknown1[4];
* df_int4 iVersion; // DocFile Version - 0x03003E
* df_int4 aiUnknown2[4];
* df_int4 nVTOCs; // Number of VTOCs
* df_int4 iFirstDirBlock; // First Directory Block
* df_int4 aiUnknown3[2];
* df_int4 iFirstDataVTOC; // First data VTOC block
* df_int4 iHasData; // 1 if there is data in the file - yes, this is important
* df_int4 iExtendedVTOC; // Extended VTOC location
* df_int4 iExtendedVTOCSize; // Size of extended VTOC (+1?)
* df_int4 aiVTOCofVTOCs[TOTAL_SIMPLE_VTOCS];
* };
*
* struct DocFile_VTOC
* {
* df_int4 aiBlocks[DF_VTOC_SIZE];
* };
*
*
* The meaning of the magic numbers
*
* 0xd0cf11e0 is DocFile with a zero on the end (sort of)
*
* If you key 177161 into a calculator, then turn the calculator
* upside down, you get igilli, which may be a reference to
* somebody's name, or to the Hebrew word for "angel".
*
* If you key 26225 into a calculator, then turn it upside down, you
* get szzgz. Microsoft has a tradition of creating nonsense words
* using the letters s, g, z and y. We think szzgz may be one of the
* Microsoft placeholder variables, along the lines of foo, bar and baz.
* Alternatively, it could be 22526, which would be gzszz.
*
*
* struct DocFile_DirEnt
* {
* df_char achEntryName[DF_NAMELEN]; // Entry Name
* df_int2 iNameLen; // Name length in bytes, including NUL terminator
* df_byte iFileType; // Entry type
* df_byte iColour; // 1 = Black, 0 = Red
* df_int4 iLeftSibling; // Next Left Sibling Entry - See below
* df_int4 iRightSibling; // Next Right Sibling Entry
* df_int4 iFirstChild; // First Child Entry
* df_byte achClassID[16]; // Class ID
* df_int4 iStateBits; // [GS]etStateBits value
* df_int4 iCreatedLow; // Low DWORD of creation time
* df_int4 iCreatedHigh; // High DWORD of creation time
* df_int4 iModifiedLow; // Low DWORD of modification time
* df_int4 iModifiedHigh; // High DWORD of modification time
* df_int4 iVTOCPosition; // VTOC Position
* df_int4 iFileSize; // Size of the stream
* df_int4 iZero; // We think this is part of the 64 bit stream size - must be 0
* };
*
* Siblings
* ========
*
* Siblings are stored in an obscure but incredibly elegant
* data structure called a red-black tree. This is generally
* defined as a 2-3-4 tree stored in a binary tree.
*
* A red-black tree can always be balanced very easily. The rules
* for a red-black tree are as follows:
*
* 1. The root node is always black.
* 2. The parent of a red node is always black.
*
* There is a Java demo of red-black trees at:
*
* http://langevin.usc.edu/BST/RedBlackTree-Example.html
*
* This demo is an excellent tool for learning how red-black
* trees work, without having to go through the process of
* learning how they were derived.
*
* Within the tree, elements are ordered by the length of the
* name and within that, ASCII order by name. This causes the
* apparently bizarre reordering you see when you use dfview.
*
* This is a somewhat bizarre choice. It suggests that the
* designer of the DocFile format was trying to optimise
* searching through the directory entries. However searching
* through directory entries is a relatively rare operation.
* Reading and seeking within a stream are much more common
* operations, especially within the file level streams, yet
* these use the horrendously inefficient FAT chains.
*
* This suggests that the designer was probably somebody
* fresh out of university, who had some basic knowledge of
* basic data structures, but little knowledge of anything
* more practical. It is bizarre to attempt to optimise
* directory searches while not using a more efficient file
* block locating system than FAT (seedling/sapling/tree
* would result in a massive improvement - in fact we have
* an alternative to DocFiles that we use internally that
* uses seedling/sapling/tree and *is* far more efficient).
*
* It is worth noting that the MS implementation of red-black
* trees is incorrect (I can tell you're surprised) and
* actually causes more operations to occur than are really
* needed. Fortunately the fact that our implementation is
* correct will not cause any problems - the MS implementation
* still appears to cause the tree to satisfy the rules, albeit
* a sequence of the same insertions in the different
* implementations may result in a different, and possibly
* deeper (but never shallower) tree.
*/
/******************************************************************************
* STORAGE_get_big_block [Internal]
*
* Reading OLE compound storage
*/
static BOOL
STORAGE_get_big_block(HANDLE hf,int n,BYTE *block)
{
DWORD result;
assert(n>=-1);
if ((SetFilePointer( hf, (n+1)*BIGSIZE, NULL,
SEEK_SET ) == INVALID_SET_FILE_POINTER) && GetLastError())
{
WARN(" seek failed (%ld)\n",GetLastError());
return FALSE;
}
if (!ReadFile( hf, block, BIGSIZE, &result, NULL ) || result != BIGSIZE)
{
WARN("(block size %d): read didn't read (%ld)\n",n,GetLastError());
return FALSE;
}
return TRUE;
}
/******************************************************************************
* STORAGE_put_big_block [INTERNAL]
*/
static BOOL
STORAGE_put_big_block(HANDLE hf,int n,BYTE *block)
{
DWORD result;
assert(n>=-1);
if ((SetFilePointer( hf, (n+1)*BIGSIZE, NULL,
SEEK_SET ) == INVALID_SET_FILE_POINTER) && GetLastError())
{
WARN("seek failed (%ld)\n",GetLastError());
return FALSE;
}
if (!WriteFile( hf, block, BIGSIZE, &result, NULL ) || result != BIGSIZE)
{
WARN(" write failed (%ld)\n",GetLastError());
return FALSE;
}
return TRUE;
}
/******************************************************************************
* STORAGE_get_next_big_blocknr [INTERNAL]
*/
static int
STORAGE_get_next_big_blocknr(HANDLE hf,int blocknr) {
INT bbs[BIGSIZE/sizeof(INT)];
struct storage_header sth;
READ_HEADER;
assert(blocknr>>7<sth.num_of_bbd_blocks);
if (sth.bbd_list[blocknr>>7]==0xffffffff)
return -5;
if (!STORAGE_get_big_block(hf,sth.bbd_list[blocknr>>7],(LPBYTE)bbs))
return -5;
assert(bbs[blocknr&0x7f]!=STORAGE_CHAINENTRY_FREE);
return bbs[blocknr&0x7f];
}
/******************************************************************************
* STORAGE_get_nth_next_big_blocknr [INTERNAL]
*/
static int
STORAGE_get_nth_next_big_blocknr(HANDLE hf,int blocknr,int nr) {
INT bbs[BIGSIZE/sizeof(INT)];
int lastblock = -1;
struct storage_header sth;
READ_HEADER;
assert(blocknr>=0);
while (nr--) {
assert((blocknr>>7)<sth.num_of_bbd_blocks);
assert(sth.bbd_list[blocknr>>7]!=0xffffffff);
/* simple caching... */
if (lastblock!=sth.bbd_list[blocknr>>7]) {
BOOL ret = STORAGE_get_big_block(hf,sth.bbd_list[blocknr>>7],(LPBYTE)bbs);
assert(ret);
lastblock = sth.bbd_list[blocknr>>7];
}
blocknr = bbs[blocknr&0x7f];
}
return blocknr;
}
/******************************************************************************
* STORAGE_get_root_pps_entry [Internal]
*/
static BOOL
STORAGE_get_root_pps_entry(HANDLE hf,struct storage_pps_entry *pstde) {
int blocknr,i;
BYTE block[BIGSIZE];
struct storage_pps_entry *stde=(struct storage_pps_entry*)block;
struct storage_header sth;
READ_HEADER;
blocknr = sth.root_startblock;
while (blocknr>=0) {
BOOL ret = STORAGE_get_big_block(hf,blocknr,block);
assert(ret);
for (i=0;i<4;i++) {
if (!stde[i].pps_sizeofname)
continue;
if (stde[i].pps_type==5) {
*pstde=stde[i];
return TRUE;
}
}
blocknr=STORAGE_get_next_big_blocknr(hf,blocknr);
}
return FALSE;
}
/******************************************************************************
* STORAGE_get_small_block [INTERNAL]
*/
static BOOL
STORAGE_get_small_block(HANDLE hf,int blocknr,BYTE *sblock) {
BYTE block[BIGSIZE];
int bigblocknr;
struct storage_pps_entry root;
BOOL ret;
assert(blocknr>=0);
ret = STORAGE_get_root_pps_entry(hf,&root);
assert(ret);
bigblocknr = STORAGE_get_nth_next_big_blocknr(hf,root.pps_sb,blocknr/SMALLBLOCKS_PER_BIGBLOCK);
assert(bigblocknr>=0);
ret = STORAGE_get_big_block(hf,bigblocknr,block);
assert(ret);
memcpy(sblock,((LPBYTE)block)+SMALLSIZE*(blocknr&(SMALLBLOCKS_PER_BIGBLOCK-1)),SMALLSIZE);
return TRUE;
}
/******************************************************************************
* STORAGE_put_small_block [INTERNAL]
*/
static BOOL
STORAGE_put_small_block(HANDLE hf,int blocknr,BYTE *sblock) {
BYTE block[BIGSIZE];
int bigblocknr;
struct storage_pps_entry root;
BOOL ret;
assert(blocknr>=0);
ret = STORAGE_get_root_pps_entry(hf,&root);
assert(ret);
bigblocknr = STORAGE_get_nth_next_big_blocknr(hf,root.pps_sb,blocknr/SMALLBLOCKS_PER_BIGBLOCK);
assert(bigblocknr>=0);
ret = STORAGE_get_big_block(hf,bigblocknr,block);
assert(ret);
memcpy(((LPBYTE)block)+SMALLSIZE*(blocknr&(SMALLBLOCKS_PER_BIGBLOCK-1)),sblock,SMALLSIZE);
ret = STORAGE_put_big_block(hf,bigblocknr,block);
assert(ret);
return TRUE;
}
/******************************************************************************
* STORAGE_get_next_small_blocknr [INTERNAL]
*/
static int
STORAGE_get_next_small_blocknr(HANDLE hf,int blocknr) {
BYTE block[BIGSIZE];
LPINT sbd = (LPINT)block;
int bigblocknr;
struct storage_header sth;
BOOL ret;
READ_HEADER;
assert(blocknr>=0);
bigblocknr = STORAGE_get_nth_next_big_blocknr(hf,sth.sbd_startblock,blocknr/128);
assert(bigblocknr>=0);
ret = STORAGE_get_big_block(hf,bigblocknr,block);
assert(ret);
assert(sbd[blocknr & 127]!=STORAGE_CHAINENTRY_FREE);
return sbd[blocknr & (128-1)];
}
/******************************************************************************
* STORAGE_get_nth_next_small_blocknr [INTERNAL]
*/
static int
STORAGE_get_nth_next_small_blocknr(HANDLE hf,int blocknr,int nr) {
int lastblocknr=-1;
BYTE block[BIGSIZE];
LPINT sbd = (LPINT)block;
struct storage_header sth;
BOOL ret;
READ_HEADER;
assert(blocknr>=0);
while ((nr--) && (blocknr>=0)) {
if (lastblocknr/128!=blocknr/128) {
int bigblocknr;
bigblocknr = STORAGE_get_nth_next_big_blocknr(hf,sth.sbd_startblock,blocknr/128);
assert(bigblocknr>=0);
ret = STORAGE_get_big_block(hf,bigblocknr,block);
assert(ret);
lastblocknr = blocknr;
}
assert(lastblocknr>=0);
lastblocknr=blocknr;
blocknr=sbd[blocknr & (128-1)];
assert(blocknr!=STORAGE_CHAINENTRY_FREE);
}
return blocknr;
}
/******************************************************************************
* STORAGE_get_pps_entry [INTERNAL]
*/
static int
STORAGE_get_pps_entry(HANDLE hf,int n,struct storage_pps_entry *pstde) {
int blocknr;
BYTE block[BIGSIZE];
struct storage_pps_entry *stde = (struct storage_pps_entry*)(((LPBYTE)block)+128*(n&3));
struct storage_header sth;
BOOL ret;
READ_HEADER;
/* we have 4 pps entries per big block */
blocknr = STORAGE_get_nth_next_big_blocknr(hf,sth.root_startblock,n/4);
assert(blocknr>=0);
ret = STORAGE_get_big_block(hf,blocknr,block);
assert(ret);
*pstde=*stde;
return 1;
}
/******************************************************************************
* STORAGE_put_pps_entry [Internal]
*/
static int
STORAGE_put_pps_entry(HANDLE hf,int n,struct storage_pps_entry *pstde) {
int blocknr;
BYTE block[BIGSIZE];
struct storage_pps_entry *stde = (struct storage_pps_entry*)(((LPBYTE)block)+128*(n&3));
struct storage_header sth;
BOOL ret;
READ_HEADER;
/* we have 4 pps entries per big block */
blocknr = STORAGE_get_nth_next_big_blocknr(hf,sth.root_startblock,n/4);
assert(blocknr>=0);
ret = STORAGE_get_big_block(hf,blocknr,block);
assert(ret);
*stde=*pstde;
ret = STORAGE_put_big_block(hf,blocknr,block);
assert(ret);
return 1;
}
/******************************************************************************
* STORAGE_look_for_named_pps [Internal]
*/
static int
STORAGE_look_for_named_pps(HANDLE hf,int n,LPOLESTR name) {
struct storage_pps_entry stde;
int ret;
if (n==-1)
return -1;
if (1!=STORAGE_get_pps_entry(hf,n,&stde))
return -1;
if (!lstrcmpW(name,stde.pps_rawname))
return n;
if (stde.pps_prev != -1) {
ret=STORAGE_look_for_named_pps(hf,stde.pps_prev,name);
if (ret!=-1)
return ret;
}
if (stde.pps_next != -1) {
ret=STORAGE_look_for_named_pps(hf,stde.pps_next,name);
if (ret!=-1)
return ret;
}
return -1;
}
/******************************************************************************
* STORAGE_dump_pps_entry [Internal]
*
* FIXME
* Function is unused
*/
void
STORAGE_dump_pps_entry(struct storage_pps_entry *stde) {
char name[33];
WideCharToMultiByte( CP_ACP, 0, stde->pps_rawname, -1, name, sizeof(name), NULL, NULL);
if (!stde->pps_sizeofname)
return;
DPRINTF("name: %s\n",name);
DPRINTF("type: %d\n",stde->pps_type);
DPRINTF("prev pps: %ld\n",stde->pps_prev);
DPRINTF("next pps: %ld\n",stde->pps_next);
DPRINTF("dir pps: %ld\n",stde->pps_dir);
DPRINTF("guid: %s\n",debugstr_guid(&(stde->pps_guid)));
if (stde->pps_type !=2) {
time_t t;
DWORD dw;
RtlTimeToSecondsSince1970((LARGE_INTEGER *)&(stde->pps_ft1),&dw);
t = dw;
DPRINTF("ts1: %s\n",ctime(&t));
RtlTimeToSecondsSince1970((LARGE_INTEGER *)&(stde->pps_ft2),&dw);
t = dw;
DPRINTF("ts2: %s\n",ctime(&t));
}
DPRINTF("startblock: %ld\n",stde->pps_sb);
DPRINTF("size: %ld\n",stde->pps_size);
}
/******************************************************************************
* STORAGE_init_storage [INTERNAL]
*/
static BOOL
STORAGE_init_storage(HANDLE hf) {
BYTE block[BIGSIZE];
LPDWORD bbs;
struct storage_header *sth;
struct storage_pps_entry *stde;
DWORD result;
SetFilePointer( hf, 0, NULL, SEEK_SET );
/* block -1 is the storage header */
sth = (struct storage_header*)block;
memcpy(sth->magic,STORAGE_magic,8);
memset(sth->unknown1,0,sizeof(sth->unknown1));
memset(sth->unknown2,0,sizeof(sth->unknown2));
memset(sth->unknown3,0,sizeof(sth->unknown3));
sth->num_of_bbd_blocks = 1;
sth->root_startblock = 1;
sth->sbd_startblock = 0xffffffff;
memset(sth->bbd_list,0xff,sizeof(sth->bbd_list));
sth->bbd_list[0] = 0;
if (!WriteFile( hf, block, BIGSIZE, &result, NULL ) || result != BIGSIZE) return FALSE;
/* block 0 is the big block directory */
bbs=(LPDWORD)block;
memset(block,0xff,sizeof(block)); /* mark all blocks as free */
bbs[0]=STORAGE_CHAINENTRY_ENDOFCHAIN; /* for this block */
bbs[1]=STORAGE_CHAINENTRY_ENDOFCHAIN; /* for directory entry */
if (!WriteFile( hf, block, BIGSIZE, &result, NULL ) || result != BIGSIZE) return FALSE;
/* block 1 is the root directory entry */
memset(block,0x00,sizeof(block));
stde = (struct storage_pps_entry*)block;
MultiByteToWideChar( CP_ACP, 0, "RootEntry", -1, stde->pps_rawname,
sizeof(stde->pps_rawname)/sizeof(WCHAR));
stde->pps_sizeofname = (strlenW(stde->pps_rawname)+1) * sizeof(WCHAR);
stde->pps_type = 5;
stde->pps_dir = -1;
stde->pps_next = -1;
stde->pps_prev = -1;
stde->pps_sb = 0xffffffff;
stde->pps_size = 0;
return (WriteFile( hf, block, BIGSIZE, &result, NULL ) && result == BIGSIZE);
}
/******************************************************************************
* STORAGE_set_big_chain [Internal]
*/
static BOOL
STORAGE_set_big_chain(HANDLE hf,int blocknr,INT type) {
BYTE block[BIGSIZE];
LPINT bbd = (LPINT)block;
int nextblocknr,bigblocknr;
struct storage_header sth;
BOOL ret;
READ_HEADER;
assert(blocknr!=type);
while (blocknr>=0) {
bigblocknr = sth.bbd_list[blocknr/128];
assert(bigblocknr>=0);
ret = STORAGE_get_big_block(hf,bigblocknr,block);
assert(ret);
nextblocknr = bbd[blocknr&(128-1)];
bbd[blocknr&(128-1)] = type;
if (type>=0)
return TRUE;
ret = STORAGE_put_big_block(hf,bigblocknr,block);
assert(ret);
type = STORAGE_CHAINENTRY_FREE;
blocknr = nextblocknr;
}
return TRUE;
}
/******************************************************************************
* STORAGE_set_small_chain [Internal]
*/
static BOOL
STORAGE_set_small_chain(HANDLE hf,int blocknr,INT type) {
BYTE block[BIGSIZE];
LPINT sbd = (LPINT)block;
int lastblocknr,nextsmallblocknr,bigblocknr;
struct storage_header sth;
BOOL ret;
READ_HEADER;
assert(blocknr!=type);
lastblocknr=-129;bigblocknr=-2;
while (blocknr>=0) {
/* cache block ... */
if (lastblocknr/128!=blocknr/128) {
bigblocknr = STORAGE_get_nth_next_big_blocknr(hf,sth.sbd_startblock,blocknr/128);
assert(bigblocknr>=0);
ret = STORAGE_get_big_block(hf,bigblocknr,block);
assert(ret);
}
lastblocknr = blocknr;
nextsmallblocknr = sbd[blocknr&(128-1)];
sbd[blocknr&(128-1)] = type;
ret = STORAGE_put_big_block(hf,bigblocknr,block);
assert(ret);
if (type>=0)
return TRUE;
type = STORAGE_CHAINENTRY_FREE;
blocknr = nextsmallblocknr;
}
return TRUE;
}
/******************************************************************************
* STORAGE_get_free_big_blocknr [Internal]
*/
static int
STORAGE_get_free_big_blocknr(HANDLE hf) {
BYTE block[BIGSIZE];
LPINT sbd = (LPINT)block;
int lastbigblocknr,i,curblock,bigblocknr;
struct storage_header sth;
BOOL ret;
READ_HEADER;
curblock = 0;
lastbigblocknr = -1;
bigblocknr = sth.bbd_list[curblock];
while (curblock<sth.num_of_bbd_blocks) {
assert(bigblocknr>=0);
ret = STORAGE_get_big_block(hf,bigblocknr,block);
assert(ret);
for (i=0;i<128;i++)
if (sbd[i]==STORAGE_CHAINENTRY_FREE) {
sbd[i] = STORAGE_CHAINENTRY_ENDOFCHAIN;
ret = STORAGE_put_big_block(hf,bigblocknr,block);
assert(ret);
memset(block,0x42,sizeof(block));
ret = STORAGE_put_big_block(hf,i+curblock*128,block);
assert(ret);
return i+curblock*128;
}
lastbigblocknr = bigblocknr;
bigblocknr = sth.bbd_list[++curblock];
}
bigblocknr = curblock*128;
/* since we have marked all blocks from 0 up to curblock*128-1
* the next free one is curblock*128, where we happily put our
* next large block depot.
*/
memset(block,0xff,sizeof(block));
/* mark the block allocated and returned by this function */
sbd[1] = STORAGE_CHAINENTRY_ENDOFCHAIN;
ret = STORAGE_put_big_block(hf,bigblocknr,block);
assert(ret);
/* if we had a bbd block already (mostlikely) we need
* to link the new one into the chain
*/
if (lastbigblocknr!=-1) {
ret = STORAGE_set_big_chain(hf,lastbigblocknr,bigblocknr);
assert(ret);
}
sth.bbd_list[curblock]=bigblocknr;
sth.num_of_bbd_blocks++;
assert(sth.num_of_bbd_blocks==curblock+1);
ret = STORAGE_put_big_block(hf,-1,(LPBYTE)&sth);
assert(ret);
/* Set the end of the chain for the bigblockdepots */
ret = STORAGE_set_big_chain(hf,bigblocknr,STORAGE_CHAINENTRY_ENDOFCHAIN);
assert(ret);
/* add 1, for the first entry is used for the additional big block
* depot. (means we already used bigblocknr) */
memset(block,0x42,sizeof(block));
/* allocate this block (filled with 0x42) */
ret = STORAGE_put_big_block(hf,bigblocknr+1,block);
assert(ret);
return bigblocknr+1;
}
/******************************************************************************
* STORAGE_get_free_small_blocknr [Internal]
*/
static int
STORAGE_get_free_small_blocknr(HANDLE hf) {
BYTE block[BIGSIZE];
LPINT sbd = (LPINT)block;
int lastbigblocknr,newblocknr,i,curblock,bigblocknr;
struct storage_pps_entry root;
struct storage_header sth;
READ_HEADER;
bigblocknr = sth.sbd_startblock;
curblock = 0;
lastbigblocknr = -1;
newblocknr = -1;
while (bigblocknr>=0) {
if (!STORAGE_get_big_block(hf,bigblocknr,block))
return -1;
for (i=0;i<128;i++)
if (sbd[i]==STORAGE_CHAINENTRY_FREE) {
sbd[i]=STORAGE_CHAINENTRY_ENDOFCHAIN;
newblocknr = i+curblock*128;
break;
}
if (i!=128)
break;
lastbigblocknr = bigblocknr;
bigblocknr = STORAGE_get_next_big_blocknr(hf,bigblocknr);
curblock++;
}
if (newblocknr==-1) {
bigblocknr = STORAGE_get_free_big_blocknr(hf);
if (bigblocknr<0)
return -1;
READ_HEADER;
memset(block,0xff,sizeof(block));
sbd[0]=STORAGE_CHAINENTRY_ENDOFCHAIN;
if (!STORAGE_put_big_block(hf,bigblocknr,block))
return -1;
if (lastbigblocknr==-1) {
sth.sbd_startblock = bigblocknr;
if (!STORAGE_put_big_block(hf,-1,(LPBYTE)&sth)) /* need to write it */
return -1;
} else {
if (!STORAGE_set_big_chain(hf,lastbigblocknr,bigblocknr))
return -1;
}
if (!STORAGE_set_big_chain(hf,bigblocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
return -1;
newblocknr = curblock*128;
}
/* allocate enough big blocks for storing the allocated small block */
if (!STORAGE_get_root_pps_entry(hf,&root))
return -1;
if (root.pps_sb==-1)
lastbigblocknr = -1;
else
lastbigblocknr = STORAGE_get_nth_next_big_blocknr(hf,root.pps_sb,(root.pps_size-1)/BIGSIZE);
while (root.pps_size < (newblocknr*SMALLSIZE+SMALLSIZE-1)) {
/* we need to allocate more stuff */
bigblocknr = STORAGE_get_free_big_blocknr(hf);
if (bigblocknr<0)
return -1;
READ_HEADER;
if (root.pps_sb==-1) {
root.pps_sb = bigblocknr;
root.pps_size += BIGSIZE;
} else {
if (!STORAGE_set_big_chain(hf,lastbigblocknr,bigblocknr))
return -1;
root.pps_size += BIGSIZE;
}
lastbigblocknr = bigblocknr;
}
if (!STORAGE_set_big_chain(hf,lastbigblocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
return -1;
if (!STORAGE_put_pps_entry(hf,0,&root))
return -1;
return newblocknr;
}
/******************************************************************************
* STORAGE_get_free_pps_entry [Internal]
*/
static int
STORAGE_get_free_pps_entry(HANDLE hf) {
int blocknr, i, curblock, lastblocknr=-1;
BYTE block[BIGSIZE];
struct storage_pps_entry *stde = (struct storage_pps_entry*)block;
struct storage_header sth;
READ_HEADER;
blocknr = sth.root_startblock;
assert(blocknr>=0);
curblock=0;
while (blocknr>=0) {
if (!STORAGE_get_big_block(hf,blocknr,block))
return -1;
for (i=0;i<4;i++)
if (stde[i].pps_sizeofname==0) /* free */
return curblock*4+i;
lastblocknr = blocknr;
blocknr = STORAGE_get_next_big_blocknr(hf,blocknr);
curblock++;
}
assert(blocknr==STORAGE_CHAINENTRY_ENDOFCHAIN);
blocknr = STORAGE_get_free_big_blocknr(hf);
/* sth invalidated */
if (blocknr<0)
return -1;
if (!STORAGE_set_big_chain(hf,lastblocknr,blocknr))
return -1;
if (!STORAGE_set_big_chain(hf,blocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
return -1;
memset(block,0,sizeof(block));
STORAGE_put_big_block(hf,blocknr,block);
return curblock*4;
}
/* --- IStream16 implementation */
typedef struct
{
/* IUnknown fields */
IStream16Vtbl *lpVtbl;
DWORD ref;
/* IStream16 fields */
SEGPTR thisptr; /* pointer to this struct as segmented */
struct storage_pps_entry stde;
int ppsent;
HANDLE hf;
ULARGE_INTEGER offset;
} IStream16Impl;
/******************************************************************************
* IStream16_QueryInterface [STORAGE.518]
*/
HRESULT WINAPI IStream16_fnQueryInterface(
IStream16* iface,REFIID refiid,LPVOID *obj
) {
IStream16Impl *This = (IStream16Impl *)iface;
TRACE_(relay)("(%p)->(%s,%p)\n",This,debugstr_guid(refiid),obj);
if (!memcmp(&IID_IUnknown,refiid,sizeof(IID_IUnknown))) {
*obj = This;
return 0;
}
return OLE_E_ENUM_NOMORE;
}
/******************************************************************************
* IStream16_AddRef [STORAGE.519]
*/
ULONG WINAPI IStream16_fnAddRef(IStream16* iface) {
IStream16Impl *This = (IStream16Impl *)iface;
return ++(This->ref);
}
/******************************************************************************
* IStream16_Release [STORAGE.520]
*/
ULONG WINAPI IStream16_fnRelease(IStream16* iface) {
IStream16Impl *This = (IStream16Impl *)iface;
FlushFileBuffers(This->hf);
This->ref--;
if (!This->ref) {
CloseHandle(This->hf);
UnMapLS( This->thisptr );
HeapFree( GetProcessHeap(), 0, This );
return 0;
}
return This->ref;
}
/******************************************************************************
* IStream16_Seek [STORAGE.523]
*
* FIXME
* Does not handle 64 bits
*/
HRESULT WINAPI IStream16_fnSeek(
IStream16* iface,LARGE_INTEGER offset,DWORD whence,ULARGE_INTEGER *newpos
) {
IStream16Impl *This = (IStream16Impl *)iface;
TRACE_(relay)("(%p)->([%ld.%ld],%ld,%p)\n",This,offset.u.HighPart,offset.u.LowPart,whence,newpos);
switch (whence) {
/* unix SEEK_xx should be the same as win95 ones */
case SEEK_SET:
/* offset must be ==0 (<0 is invalid, and >0 cannot be handled
* right now.
*/
assert(offset.u.HighPart==0);
This->offset.u.HighPart = offset.u.HighPart;
This->offset.u.LowPart = offset.u.LowPart;
break;
case SEEK_CUR:
if (offset.u.HighPart < 0) {
/* FIXME: is this negation correct ? */
offset.u.HighPart = -offset.u.HighPart;
offset.u.LowPart = (0xffffffff ^ offset.u.LowPart)+1;
assert(offset.u.HighPart==0);
assert(This->offset.u.LowPart >= offset.u.LowPart);
This->offset.u.LowPart -= offset.u.LowPart;
} else {
assert(offset.u.HighPart==0);
This->offset.u.LowPart+= offset.u.LowPart;
}
break;
case SEEK_END:
assert(offset.u.HighPart==0);
This->offset.u.LowPart = This->stde.pps_size-offset.u.LowPart;
break;
}
if (This->offset.u.LowPart>This->stde.pps_size)
This->offset.u.LowPart=This->stde.pps_size;
if (newpos) *newpos = This->offset;
return S_OK;
}
/******************************************************************************
* IStream16_Read [STORAGE.521]
*/
HRESULT WINAPI IStream16_fnRead(
IStream16* iface,void *pv,ULONG cb,ULONG *pcbRead
) {
IStream16Impl *This = (IStream16Impl *)iface;
BYTE block[BIGSIZE];
ULONG *bytesread=pcbRead,xxread;
int blocknr;
LPBYTE pbv = pv;
TRACE_(relay)("(%p)->(%p,%ld,%p)\n",This,pv,cb,pcbRead);
if (!pcbRead) bytesread=&xxread;
*bytesread = 0;
if (cb>This->stde.pps_size-This->offset.u.LowPart)
cb=This->stde.pps_size-This->offset.u.LowPart;
if (This->stde.pps_size < 0x1000) {
/* use small block reader */
blocknr = STORAGE_get_nth_next_small_blocknr(This->hf,This->stde.pps_sb,This->offset.u.LowPart/SMALLSIZE);
while (cb) {
int cc;
if (!STORAGE_get_small_block(This->hf,blocknr,block)) {
WARN("small block read failed!!!\n");
return E_FAIL;
}
cc = cb;
if (cc>SMALLSIZE-(This->offset.u.LowPart&(SMALLSIZE-1)))
cc=SMALLSIZE-(This->offset.u.LowPart&(SMALLSIZE-1));
memcpy(pbv,block+(This->offset.u.LowPart&(SMALLSIZE-1)),cc);
This->offset.u.LowPart+=cc;
pbv+=cc;
*bytesread+=cc;
cb-=cc;
blocknr = STORAGE_get_next_small_blocknr(This->hf,blocknr);
}
} else {
/* use big block reader */
blocknr = STORAGE_get_nth_next_big_blocknr(This->hf,This->stde.pps_sb,This->offset.u.LowPart/BIGSIZE);
while (cb) {
int cc;
if (!STORAGE_get_big_block(This->hf,blocknr,block)) {
WARN("big block read failed!!!\n");
return E_FAIL;
}
cc = cb;
if (cc>BIGSIZE-(This->offset.u.LowPart&(BIGSIZE-1)))
cc=BIGSIZE-(This->offset.u.LowPart&(BIGSIZE-1));
memcpy(pbv,block+(This->offset.u.LowPart&(BIGSIZE-1)),cc);
This->offset.u.LowPart+=cc;
pbv+=cc;
*bytesread+=cc;
cb-=cc;
blocknr=STORAGE_get_next_big_blocknr(This->hf,blocknr);
}
}
return S_OK;
}
/******************************************************************************
* IStream16_Write [STORAGE.522]
*/
HRESULT WINAPI IStream16_fnWrite(
IStream16* iface,const void *pv,ULONG cb,ULONG *pcbWrite
) {
IStream16Impl *This = (IStream16Impl *)iface;
BYTE block[BIGSIZE];
ULONG *byteswritten=pcbWrite,xxwritten;
int oldsize,newsize,i,curoffset=0,lastblocknr,blocknr,cc;
HANDLE hf = This->hf;
LPBYTE pbv = (LPBYTE)pv;
if (!pcbWrite) byteswritten=&xxwritten;
*byteswritten = 0;
TRACE_(relay)("(%p)->(%p,%ld,%p)\n",This,pv,cb,pcbWrite);
/* do we need to junk some blocks? */
newsize = This->offset.u.LowPart+cb;
oldsize = This->stde.pps_size;
if (newsize < oldsize) {
if (oldsize < 0x1000) {
/* only small blocks */
blocknr=STORAGE_get_nth_next_small_blocknr(hf,This->stde.pps_sb,newsize/SMALLSIZE);
assert(blocknr>=0);
/* will set the rest of the chain to 'free' */
if (!STORAGE_set_small_chain(hf,blocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
return E_FAIL;
} else {
if (newsize >= 0x1000) {
blocknr=STORAGE_get_nth_next_big_blocknr(hf,This->stde.pps_sb,newsize/BIGSIZE);
assert(blocknr>=0);
/* will set the rest of the chain to 'free' */
if (!STORAGE_set_big_chain(hf,blocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
return E_FAIL;
} else {
/* Migrate large blocks to small blocks
* (we just migrate newsize bytes)
*/
LPBYTE curdata,data = HeapAlloc(GetProcessHeap(),0,newsize+BIGSIZE);
HRESULT r = E_FAIL;
cc = newsize;
blocknr = This->stde.pps_sb;
curdata = data;
while (cc>0) {
if (!STORAGE_get_big_block(hf,blocknr,curdata)) {
HeapFree(GetProcessHeap(),0,data);
return E_FAIL;
}
curdata += BIGSIZE;
cc -= BIGSIZE;
blocknr = STORAGE_get_next_big_blocknr(hf,blocknr);
}
/* frees complete chain for this stream */
if (!STORAGE_set_big_chain(hf,This->stde.pps_sb,STORAGE_CHAINENTRY_FREE))
goto err;
curdata = data;
blocknr = This->stde.pps_sb = STORAGE_get_free_small_blocknr(hf);
if (blocknr<0)
goto err;
cc = newsize;
while (cc>0) {
if (!STORAGE_put_small_block(hf,blocknr,curdata))
goto err;
cc -= SMALLSIZE;
if (cc<=0) {
if (!STORAGE_set_small_chain(hf,blocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
goto err;
break;
} else {
int newblocknr = STORAGE_get_free_small_blocknr(hf);
if (newblocknr<0)
goto err;
if (!STORAGE_set_small_chain(hf,blocknr,newblocknr))
goto err;
blocknr = newblocknr;
}
curdata += SMALLSIZE;
}
r = S_OK;
err:
HeapFree(GetProcessHeap(),0,data);
if(r != S_OK)
return r;
}
}
This->stde.pps_size = newsize;
}
if (newsize > oldsize) {
if (oldsize >= 0x1000) {
/* should return the block right before the 'endofchain' */
blocknr = STORAGE_get_nth_next_big_blocknr(hf,This->stde.pps_sb,This->stde.pps_size/BIGSIZE);
assert(blocknr>=0);
lastblocknr = blocknr;
for (i=oldsize/BIGSIZE;i<newsize/BIGSIZE;i++) {
blocknr = STORAGE_get_free_big_blocknr(hf);
if (blocknr<0)
return E_FAIL;
if (!STORAGE_set_big_chain(hf,lastblocknr,blocknr))
return E_FAIL;
lastblocknr = blocknr;
}
if (!STORAGE_set_big_chain(hf,blocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
return E_FAIL;
} else {
if (newsize < 0x1000) {
/* find startblock */
if (!oldsize)
This->stde.pps_sb = blocknr = STORAGE_get_free_small_blocknr(hf);
else
blocknr = STORAGE_get_nth_next_small_blocknr(hf,This->stde.pps_sb,This->stde.pps_size/SMALLSIZE);
if (blocknr<0)
return E_FAIL;
/* allocate required new small blocks */
lastblocknr = blocknr;
for (i=oldsize/SMALLSIZE;i<newsize/SMALLSIZE;i++) {
blocknr = STORAGE_get_free_small_blocknr(hf);
if (blocknr<0)
return E_FAIL;
if (!STORAGE_set_small_chain(hf,lastblocknr,blocknr))
return E_FAIL;
lastblocknr = blocknr;
}
/* and terminate the chain */
if (!STORAGE_set_small_chain(hf,lastblocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
return E_FAIL;
} else {
if (!oldsize) {
/* no single block allocated yet */
blocknr=STORAGE_get_free_big_blocknr(hf);
if (blocknr<0)
return E_FAIL;
This->stde.pps_sb = blocknr;
} else {
/* Migrate small blocks to big blocks */
LPBYTE curdata,data = HeapAlloc(GetProcessHeap(),0,oldsize+BIGSIZE);
HRESULT r = E_FAIL;
cc = oldsize;
blocknr = This->stde.pps_sb;
curdata = data;
/* slurp in */
while (cc>0) {
if (!STORAGE_get_small_block(hf,blocknr,curdata))
goto err2;
curdata += SMALLSIZE;
cc -= SMALLSIZE;
blocknr = STORAGE_get_next_small_blocknr(hf,blocknr);
}
/* free small block chain */
if (!STORAGE_set_small_chain(hf,This->stde.pps_sb,STORAGE_CHAINENTRY_FREE))
goto err2;
curdata = data;
blocknr = This->stde.pps_sb = STORAGE_get_free_big_blocknr(hf);
if (blocknr<0)
goto err2;
/* put the data into the big blocks */
cc = This->stde.pps_size;
while (cc>0) {
if (!STORAGE_put_big_block(hf,blocknr,curdata))
goto err2;
cc -= BIGSIZE;
if (cc<=0) {
if (!STORAGE_set_big_chain(hf,blocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
goto err2;
break;
} else {
int newblocknr = STORAGE_get_free_big_blocknr(hf);
if (newblocknr<0)
goto err2;
if (!STORAGE_set_big_chain(hf,blocknr,newblocknr))
goto err2;
blocknr = newblocknr;
}
curdata += BIGSIZE;
}
r = S_OK;
err2:
HeapFree(GetProcessHeap(),0,data);
if(r != S_OK)
return r;
}
/* generate big blocks to fit the new data */
lastblocknr = blocknr;
for (i=oldsize/BIGSIZE;i<newsize/BIGSIZE;i++) {
blocknr = STORAGE_get_free_big_blocknr(hf);
if (blocknr<0)
return E_FAIL;
if (!STORAGE_set_big_chain(hf,lastblocknr,blocknr))
return E_FAIL;
lastblocknr = blocknr;
}
/* terminate chain */
if (!STORAGE_set_big_chain(hf,lastblocknr,STORAGE_CHAINENTRY_ENDOFCHAIN))
return E_FAIL;
}
}
This->stde.pps_size = newsize;
}
/* There are just some cases where we didn't modify it, we write it out
* everytime
*/
if (!STORAGE_put_pps_entry(hf,This->ppsent,&(This->stde)))
return E_FAIL;
/* finally the write pass */
if (This->stde.pps_size < 0x1000) {
blocknr = STORAGE_get_nth_next_small_blocknr(hf,This->stde.pps_sb,This->offset.u.LowPart/SMALLSIZE);
assert(blocknr>=0);
while (cb>0) {
/* we ensured that it is allocated above */
assert(blocknr>=0);
/* Read old block everytime, since we can have
* overlapping data at START and END of the write
*/
if (!STORAGE_get_small_block(hf,blocknr,block))
return E_FAIL;
cc = SMALLSIZE-(This->offset.u.LowPart&(SMALLSIZE-1));
if (cc>cb)
cc=cb;
memcpy( ((LPBYTE)block)+(This->offset.u.LowPart&(SMALLSIZE-1)),
pbv+curoffset,
cc
);
if (!STORAGE_put_small_block(hf,blocknr,block))
return E_FAIL;
cb -= cc;
curoffset += cc;
pbv += cc;
This->offset.u.LowPart += cc;
*byteswritten += cc;
blocknr = STORAGE_get_next_small_blocknr(hf,blocknr);
}
} else {
blocknr = STORAGE_get_nth_next_big_blocknr(hf,This->stde.pps_sb,This->offset.u.LowPart/BIGSIZE);
assert(blocknr>=0);
while (cb>0) {
/* we ensured that it is allocated above, so it better is */
assert(blocknr>=0);
/* read old block everytime, since we can have
* overlapping data at START and END of the write
*/
if (!STORAGE_get_big_block(hf,blocknr,block))
return E_FAIL;
cc = BIGSIZE-(This->offset.u.LowPart&(BIGSIZE-1));
if (cc>cb)
cc=cb;
memcpy( ((LPBYTE)block)+(This->offset.u.LowPart&(BIGSIZE-1)),
pbv+curoffset,
cc
);
if (!STORAGE_put_big_block(hf,blocknr,block))
return E_FAIL;
cb -= cc;
curoffset += cc;
pbv += cc;
This->offset.u.LowPart += cc;
*byteswritten += cc;
blocknr = STORAGE_get_next_big_blocknr(hf,blocknr);
}
}
return S_OK;
}
/******************************************************************************
* _create_istream16 [Internal]
*/
static void _create_istream16(LPSTREAM16 *str) {
IStream16Impl* lpst;
if (!strvt16.QueryInterface) {
HMODULE16 wp = GetModuleHandle16("STORAGE");
if (wp>=32) {
/* FIXME: what is This GetProcAddress16. Should the name be IStream16_QueryInterface of IStream16_fnQueryInterface */
#define VTENT(xfn) strvt16.xfn = (void*)GetProcAddress16(wp,"IStream16_"#xfn);assert(strvt16.xfn)
VTENT(QueryInterface);
VTENT(AddRef);
VTENT(Release);
VTENT(Read);
VTENT(Write);
VTENT(Seek);
VTENT(SetSize);
VTENT(CopyTo);
VTENT(Commit);
VTENT(Revert);
VTENT(LockRegion);
VTENT(UnlockRegion);
VTENT(Stat);
VTENT(Clone);
#undef VTENT
segstrvt16 = (IStream16Vtbl*)MapLS( &strvt16 );
} else {
#define VTENT(xfn) strvt16.xfn = IStream16_fn##xfn;
VTENT(QueryInterface);
VTENT(AddRef);
VTENT(Release);
VTENT(Read);
VTENT(Write);
VTENT(Seek);
/*
VTENT(CopyTo);
VTENT(Commit);
VTENT(SetSize);
VTENT(Revert);
VTENT(LockRegion);
VTENT(UnlockRegion);
VTENT(Stat);
VTENT(Clone);
*/
#undef VTENT
segstrvt16 = &strvt16;
}
}
lpst = HeapAlloc( GetProcessHeap(), 0, sizeof(*lpst) );
lpst->lpVtbl = segstrvt16;
lpst->ref = 1;
lpst->thisptr = MapLS( lpst );
*str = (void*)lpst->thisptr;
}
/* --- IStream32 implementation */
typedef struct
{
/* IUnknown fields */
IStreamVtbl *lpVtbl;
DWORD ref;
/* IStream32 fields */
struct storage_pps_entry stde;
int ppsent;
HANDLE hf;
ULARGE_INTEGER offset;
} IStream32Impl;
/*****************************************************************************
* IStream32_QueryInterface [VTABLE]
*/
HRESULT WINAPI IStream_fnQueryInterface(
IStream* iface,REFIID refiid,LPVOID *obj
) {
IStream32Impl *This = (IStream32Impl *)iface;
TRACE_(relay)("(%p)->(%s,%p)\n",This,debugstr_guid(refiid),obj);
if (!memcmp(&IID_IUnknown,refiid,sizeof(IID_IUnknown))) {
*obj = This;
return 0;
}
return OLE_E_ENUM_NOMORE;
}
/******************************************************************************
* IStream32_AddRef [VTABLE]
*/
ULONG WINAPI IStream_fnAddRef(IStream* iface) {
IStream32Impl *This = (IStream32Impl *)iface;
return ++(This->ref);
}
/******************************************************************************
* IStream32_Release [VTABLE]
*/
ULONG WINAPI IStream_fnRelease(IStream* iface) {
IStream32Impl *This = (IStream32Impl *)iface;
FlushFileBuffers(This->hf);
This->ref--;
if (!This->ref) {
CloseHandle(This->hf);
HeapFree( GetProcessHeap(), 0, This );
return 0;
}
return This->ref;
}
/* --- IStorage16 implementation */
typedef struct
{
/* IUnknown fields */
IStorage16Vtbl *lpVtbl;
DWORD ref;
/* IStorage16 fields */
SEGPTR thisptr; /* pointer to this struct as segmented */
struct storage_pps_entry stde;
int ppsent;
HANDLE hf;
} IStorage16Impl;
/******************************************************************************
* IStorage16_QueryInterface [STORAGE.500]
*/
HRESULT WINAPI IStorage16_fnQueryInterface(
IStorage16* iface,REFIID refiid,LPVOID *obj
) {
IStorage16Impl *This = (IStorage16Impl *)iface;
TRACE_(relay)("(%p)->(%s,%p)\n",This,debugstr_guid(refiid),obj);
if (!memcmp(&IID_IUnknown,refiid,sizeof(IID_IUnknown))) {
*obj = This;
return 0;
}
return OLE_E_ENUM_NOMORE;
}
/******************************************************************************
* IStorage16_AddRef [STORAGE.501]
*/
ULONG WINAPI IStorage16_fnAddRef(IStorage16* iface) {
IStorage16Impl *This = (IStorage16Impl *)iface;
return ++(This->ref);
}
/******************************************************************************
* IStorage16_Release [STORAGE.502]
*/
ULONG WINAPI IStorage16_fnRelease(IStorage16* iface) {
IStorage16Impl *This = (IStorage16Impl *)iface;
This->ref--;
if (This->ref)
return This->ref;
UnMapLS( This->thisptr );
HeapFree( GetProcessHeap(), 0, This );
return 0;
}
/******************************************************************************
* IStorage16_Stat [STORAGE.517]
*/
HRESULT WINAPI IStorage16_fnStat(
LPSTORAGE16 iface,STATSTG16 *pstatstg, DWORD grfStatFlag
) {
IStorage16Impl *This = (IStorage16Impl *)iface;
DWORD len = WideCharToMultiByte( CP_ACP, 0, This->stde.pps_rawname, -1, NULL, 0, NULL, NULL );
LPSTR nameA = HeapAlloc( GetProcessHeap(), 0, len );
TRACE("(%p)->(%p,0x%08lx)\n",
This,pstatstg,grfStatFlag
);
WideCharToMultiByte( CP_ACP, 0, This->stde.pps_rawname, -1, nameA, len, NULL, NULL );
pstatstg->pwcsName=(LPOLESTR16)MapLS( nameA );
pstatstg->type = This->stde.pps_type;
pstatstg->cbSize.u.LowPart = This->stde.pps_size;
pstatstg->mtime = This->stde.pps_ft1; /* FIXME */ /* why? */
pstatstg->atime = This->stde.pps_ft2; /* FIXME */
pstatstg->ctime = This->stde.pps_ft2; /* FIXME */
pstatstg->grfMode = 0; /* FIXME */
pstatstg->grfLocksSupported = 0; /* FIXME */
pstatstg->clsid = This->stde.pps_guid;
pstatstg->grfStateBits = 0; /* FIXME */
pstatstg->reserved = 0;
return S_OK;
}
/******************************************************************************
* IStorage16_Commit [STORAGE.509]
*/
HRESULT WINAPI IStorage16_fnCommit(
LPSTORAGE16 iface,DWORD commitflags
) {
IStorage16Impl *This = (IStorage16Impl *)iface;
FIXME("(%p)->(0x%08lx),STUB!\n",
This,commitflags
);
return S_OK;
}
/******************************************************************************
* IStorage16_CopyTo [STORAGE.507]
*/
HRESULT WINAPI IStorage16_fnCopyTo(LPSTORAGE16 iface,DWORD ciidExclude,const IID *rgiidExclude,SNB16 SNB16Exclude,IStorage16 *pstgDest) {
IStorage16Impl *This = (IStorage16Impl *)iface;
FIXME("IStorage16(%p)->(0x%08lx,%s,%p,%p),stub!\n",
This,ciidExclude,debugstr_guid(rgiidExclude),SNB16Exclude,pstgDest
);
return S_OK;
}
/******************************************************************************
* IStorage16_CreateStorage [STORAGE.505]
*/
HRESULT WINAPI IStorage16_fnCreateStorage(
LPSTORAGE16 iface,LPCOLESTR16 pwcsName,DWORD grfMode,DWORD dwStgFormat,DWORD reserved2, IStorage16 **ppstg
) {
IStorage16Impl *This = (IStorage16Impl *)iface;
IStorage16Impl* lpstg;
int ppsent,x;
struct storage_pps_entry stde;
struct storage_header sth;
HANDLE hf=This->hf;
BOOL ret;
int nPPSEntries;
READ_HEADER;
TRACE("(%p)->(%s,0x%08lx,0x%08lx,0x%08lx,%p)\n",
This,pwcsName,grfMode,dwStgFormat,reserved2,ppstg
);
if (grfMode & STGM_TRANSACTED)
FIXME("We do not support transacted Compound Storage. Using direct mode.\n");
_create_istorage16(ppstg);
lpstg = MapSL((SEGPTR)*ppstg);
lpstg->hf = This->hf;
ppsent=STORAGE_get_free_pps_entry(lpstg->hf);
if (ppsent<0)
return E_FAIL;
stde=This->stde;
if (stde.pps_dir==-1) {
stde.pps_dir = ppsent;
x = This->ppsent;
} else {
FIXME(" use prev chain too ?\n");
x=stde.pps_dir;
if (1!=STORAGE_get_pps_entry(lpstg->hf,x,&stde))
return E_FAIL;
while (stde.pps_next!=-1) {
x=stde.pps_next;
if (1!=STORAGE_get_pps_entry(lpstg->hf,x,&stde))
return E_FAIL;
}
stde.pps_next = ppsent;
}
ret = STORAGE_put_pps_entry(lpstg->hf,x,&stde);
assert(ret);
nPPSEntries = STORAGE_get_pps_entry(lpstg->hf,ppsent,&(lpstg->stde));
assert(nPPSEntries == 1);
MultiByteToWideChar( CP_ACP, 0, pwcsName, -1, lpstg->stde.pps_rawname,
sizeof(lpstg->stde.pps_rawname)/sizeof(WCHAR));
lpstg->stde.pps_sizeofname = (strlenW(lpstg->stde.pps_rawname)+1)*sizeof(WCHAR);
lpstg->stde.pps_next = -1;
lpstg->stde.pps_prev = -1;
lpstg->stde.pps_dir = -1;
lpstg->stde.pps_sb = -1;
lpstg->stde.pps_size = 0;
lpstg->stde.pps_type = 1;
lpstg->ppsent = ppsent;
/* FIXME: timestamps? */
if (!STORAGE_put_pps_entry(lpstg->hf,ppsent,&(lpstg->stde)))
return E_FAIL;
return S_OK;
}
/******************************************************************************
* IStorage16_CreateStream [STORAGE.503]
*/
HRESULT WINAPI IStorage16_fnCreateStream(
LPSTORAGE16 iface,LPCOLESTR16 pwcsName,DWORD grfMode,DWORD reserved1,DWORD reserved2, IStream16 **ppstm
) {
IStorage16Impl *This = (IStorage16Impl *)iface;
IStream16Impl* lpstr;
int ppsent,x;
struct storage_pps_entry stde;
BOOL ret;
int nPPSEntries;
TRACE("(%p)->(%s,0x%08lx,0x%08lx,0x%08lx,%p)\n",
This,pwcsName,grfMode,reserved1,reserved2,ppstm
);
if (grfMode & STGM_TRANSACTED)
FIXME("We do not support transacted Compound Storage. Using direct mode.\n");
_create_istream16(ppstm);
lpstr = MapSL((SEGPTR)*ppstm);
DuplicateHandle( GetCurrentProcess(), This->hf, GetCurrentProcess(),
&lpstr->hf, 0, TRUE, DUPLICATE_SAME_ACCESS );
lpstr->offset.u.LowPart = 0;
lpstr->offset.u.HighPart = 0;
ppsent=STORAGE_get_free_pps_entry(lpstr->hf);
if (ppsent<0)
return E_FAIL;
stde=This->stde;
if (stde.pps_next==-1)
x=This->ppsent;
else
while (stde.pps_next!=-1) {
x=stde.pps_next;
if (1!=STORAGE_get_pps_entry(lpstr->hf,x,&stde))
return E_FAIL;
}
stde.pps_next = ppsent;
ret = STORAGE_put_pps_entry(lpstr->hf,x,&stde);
assert(ret);
nPPSEntries = STORAGE_get_pps_entry(lpstr->hf,ppsent,&(lpstr->stde));
assert(nPPSEntries == 1);
MultiByteToWideChar( CP_ACP, 0, pwcsName, -1, lpstr->stde.pps_rawname,
sizeof(lpstr->stde.pps_rawname)/sizeof(WCHAR));
lpstr->stde.pps_sizeofname = (strlenW(lpstr->stde.pps_rawname)+1) * sizeof(WCHAR);
lpstr->stde.pps_next = -1;
lpstr->stde.pps_prev = -1;
lpstr->stde.pps_dir = -1;
lpstr->stde.pps_sb = -1;
lpstr->stde.pps_size = 0;
lpstr->stde.pps_type = 2;
lpstr->ppsent = ppsent;
/* FIXME: timestamps? */
if (!STORAGE_put_pps_entry(lpstr->hf,ppsent,&(lpstr->stde)))
return E_FAIL;
return S_OK;
}
/******************************************************************************
* IStorage16_OpenStorage [STORAGE.506]
*/
HRESULT WINAPI IStorage16_fnOpenStorage(
LPSTORAGE16 iface,LPCOLESTR16 pwcsName, IStorage16 *pstgPrio, DWORD grfMode, SNB16 snbExclude, DWORD reserved, IStorage16 **ppstg
) {
IStorage16Impl *This = (IStorage16Impl *)iface;
IStream16Impl* lpstg;
WCHAR name[33];
int newpps;
TRACE_(relay)("(%p)->(%s,%p,0x%08lx,%p,0x%08lx,%p)\n",
This,pwcsName,pstgPrio,grfMode,snbExclude,reserved,ppstg
);
if (grfMode & STGM_TRANSACTED)
FIXME("We do not support transacted Compound Storage. Using direct mode.\n");
_create_istorage16(ppstg);
lpstg = MapSL((SEGPTR)*ppstg);
DuplicateHandle( GetCurrentProcess(), This->hf, GetCurrentProcess(),
&lpstg->hf, 0, TRUE, DUPLICATE_SAME_ACCESS );
MultiByteToWideChar( CP_ACP, 0, pwcsName, -1, name, sizeof(name)/sizeof(WCHAR));
newpps = STORAGE_look_for_named_pps(lpstg->hf,This->stde.pps_dir,name);
if (newpps==-1) {
IStream16_fnRelease((IStream16*)lpstg);
return E_FAIL;
}
if (1!=STORAGE_get_pps_entry(lpstg->hf,newpps,&(lpstg->stde))) {
IStream16_fnRelease((IStream16*)lpstg);
return E_FAIL;
}
lpstg->ppsent = newpps;
return S_OK;
}
/******************************************************************************
* IStorage16_OpenStream [STORAGE.504]
*/
HRESULT WINAPI IStorage16_fnOpenStream(
LPSTORAGE16 iface,LPCOLESTR16 pwcsName, void *reserved1, DWORD grfMode, DWORD reserved2, IStream16 **ppstm
) {
IStorage16Impl *This = (IStorage16Impl *)iface;
IStream16Impl* lpstr;
WCHAR name[33];
int newpps;
TRACE_(relay)("(%p)->(%s,%p,0x%08lx,0x%08lx,%p)\n",
This,pwcsName,reserved1,grfMode,reserved2,ppstm
);
if (grfMode & STGM_TRANSACTED)
FIXME("We do not support transacted Compound Storage. Using direct mode.\n");
_create_istream16(ppstm);
lpstr = MapSL((SEGPTR)*ppstm);
DuplicateHandle( GetCurrentProcess(), This->hf, GetCurrentProcess(),
&lpstr->hf, 0, TRUE, DUPLICATE_SAME_ACCESS );
MultiByteToWideChar( CP_ACP, 0, pwcsName, -1, name, sizeof(name)/sizeof(WCHAR));
newpps = STORAGE_look_for_named_pps(lpstr->hf,This->stde.pps_dir,name);
if (newpps==-1) {
IStream16_fnRelease((IStream16*)lpstr);
return E_FAIL;
}
if (1!=STORAGE_get_pps_entry(lpstr->hf,newpps,&(lpstr->stde))) {
IStream16_fnRelease((IStream16*)lpstr);
return E_FAIL;
}
lpstr->offset.u.LowPart = 0;
lpstr->offset.u.HighPart = 0;
lpstr->ppsent = newpps;
return S_OK;
}
/******************************************************************************
* _create_istorage16 [INTERNAL]
*/
static void _create_istorage16(LPSTORAGE16 *stg) {
IStorage16Impl* lpst;
if (!stvt16.QueryInterface) {
HMODULE16 wp = GetModuleHandle16("STORAGE");
if (wp>=32) {
#define VTENT(xfn) stvt16.xfn = (void*)GetProcAddress16(wp,"IStorage16_"#xfn);
VTENT(QueryInterface)
VTENT(AddRef)
VTENT(Release)
VTENT(CreateStream)
VTENT(OpenStream)
VTENT(CreateStorage)
VTENT(OpenStorage)
VTENT(CopyTo)
VTENT(MoveElementTo)
VTENT(Commit)
VTENT(Revert)
VTENT(EnumElements)
VTENT(DestroyElement)
VTENT(RenameElement)
VTENT(SetElementTimes)
VTENT(SetClass)
VTENT(SetStateBits)
VTENT(Stat)
#undef VTENT
segstvt16 = (IStorage16Vtbl*)MapLS( &stvt16 );
} else {
#define VTENT(xfn) stvt16.xfn = IStorage16_fn##xfn;
VTENT(QueryInterface)
VTENT(AddRef)
VTENT(Release)
VTENT(CreateStream)
VTENT(OpenStream)
VTENT(CreateStorage)
VTENT(OpenStorage)
VTENT(CopyTo)
VTENT(Commit)
/* not (yet) implemented ...
VTENT(MoveElementTo)
VTENT(Revert)
VTENT(EnumElements)
VTENT(DestroyElement)
VTENT(RenameElement)
VTENT(SetElementTimes)
VTENT(SetClass)
VTENT(SetStateBits)
VTENT(Stat)
*/
#undef VTENT
segstvt16 = &stvt16;
}
}
lpst = HeapAlloc( GetProcessHeap(), 0, sizeof(*lpst) );
lpst->lpVtbl = segstvt16;
lpst->ref = 1;
lpst->thisptr = MapLS(lpst);
*stg = (void*)lpst->thisptr;
}
/******************************************************************************
* Storage API functions
*/
/******************************************************************************
* StgCreateDocFileA [STORAGE.1]
*/
HRESULT WINAPI StgCreateDocFile16(
LPCOLESTR16 pwcsName,DWORD grfMode,DWORD reserved,IStorage16 **ppstgOpen
) {
HANDLE hf;
int i,ret;
IStorage16Impl* lpstg;
struct storage_pps_entry stde;
TRACE("(%s,0x%08lx,0x%08lx,%p)\n",
pwcsName,grfMode,reserved,ppstgOpen
);
_create_istorage16(ppstgOpen);
hf = CreateFileA(pwcsName,GENERIC_READ|GENERIC_WRITE,0,NULL,CREATE_NEW,0,0);
if (hf==INVALID_HANDLE_VALUE) {
WARN("couldn't open file for storage:%ld\n",GetLastError());
return E_FAIL;
}
lpstg = MapSL((SEGPTR)*ppstgOpen);
lpstg->hf = hf;
/* FIXME: check for existence before overwriting? */
if (!STORAGE_init_storage(hf)) {
CloseHandle(hf);
return E_FAIL;
}
i=0;ret=0;
while (!ret) { /* neither 1 nor <0 */
ret=STORAGE_get_pps_entry(hf,i,&stde);
if ((ret==1) && (stde.pps_type==5)) {
lpstg->stde = stde;
lpstg->ppsent = i;
break;
}
i++;
}
if (ret!=1) {
IStorage16_fnRelease((IStorage16*)lpstg); /* will remove it */
return E_FAIL;
}
return S_OK;
}
/******************************************************************************
* StgIsStorageFile [STORAGE.5]
*/
HRESULT WINAPI StgIsStorageFile16(LPCOLESTR16 fn) {
UNICODE_STRING strW;
HRESULT ret;
RtlCreateUnicodeStringFromAsciiz(&strW, fn);
ret = StgIsStorageFile( strW.Buffer );
RtlFreeUnicodeString( &strW );
return ret;
}
/******************************************************************************
* StgOpenStorage [STORAGE.3]
*/
HRESULT WINAPI StgOpenStorage16(
LPCOLESTR16 pwcsName,IStorage16 *pstgPriority,DWORD grfMode,
SNB16 snbExclude,DWORD reserved, IStorage16 **ppstgOpen
) {
HANDLE hf;
int ret,i;
IStorage16Impl* lpstg;
struct storage_pps_entry stde;
TRACE("(%s,%p,0x%08lx,%p,%ld,%p)\n",
pwcsName,pstgPriority,grfMode,snbExclude,reserved,ppstgOpen
);
_create_istorage16(ppstgOpen);
hf = CreateFileA(pwcsName,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
if (hf==INVALID_HANDLE_VALUE) {
WARN("Couldn't open file for storage\n");
return E_FAIL;
}
lpstg = MapSL((SEGPTR)*ppstgOpen);
lpstg->hf = hf;
i=0;ret=0;
while (!ret) { /* neither 1 nor <0 */
ret=STORAGE_get_pps_entry(hf,i,&stde);
if ((ret==1) && (stde.pps_type==5)) {
lpstg->stde=stde;
break;
}
i++;
}
if (ret!=1) {
IStorage16_fnRelease((IStorage16*)lpstg); /* will remove it */
return E_FAIL;
}
return S_OK;
}
/******************************************************************************
* StgIsStorageILockBytes [STORAGE.6]
*
* Determines if the ILockBytes contains a storage object.
*/
HRESULT WINAPI StgIsStorageILockBytes16(SEGPTR plkbyt)
{
DWORD args[6];
HRESULT hres;
HANDLE16 hsig;
args[0] = (DWORD)plkbyt; /* iface */
args[1] = args[2] = 0; /* ULARGE_INTEGER offset */
args[3] = (DWORD)K32WOWGlobalAllocLock16( 0, 8, &hsig ); /* sig */
args[4] = 8;
args[5] = 0;
if (!K32WOWCallback16Ex(
(DWORD)((ILockBytes16Vtbl*)MapSL(
(SEGPTR)((LPLOCKBYTES16)MapSL(plkbyt))->lpVtbl)
)->ReadAt,
WCB16_PASCAL,
6*sizeof(DWORD),
(LPVOID)args,
(LPDWORD)&hres
)) {
ERR("CallTo16 ILockBytes16::ReadAt() failed, hres %lx\n",hres);
return hres;
}
if (memcmp(MapSL(args[3]), STORAGE_magic, sizeof(STORAGE_magic)) == 0) {
K32WOWGlobalUnlockFree16(args[3]);
return S_OK;
}
K32WOWGlobalUnlockFree16(args[3]);
return S_FALSE;
}
/******************************************************************************
* StgOpenStorageOnILockBytes [STORAGE.4]
*/
HRESULT WINAPI StgOpenStorageOnILockBytes16(
ILockBytes16 *plkbyt,
IStorage16 *pstgPriority,
DWORD grfMode,
SNB16 snbExclude,
DWORD reserved,
IStorage16 **ppstgOpen)
{
IStorage16Impl* lpstg;
if ((plkbyt == 0) || (ppstgOpen == 0))
return STG_E_INVALIDPOINTER;
*ppstgOpen = 0;
_create_istorage16(ppstgOpen);
lpstg = MapSL((SEGPTR)*ppstgOpen);
/* just teach it to use HANDLE instead of ilockbytes :/ */
return S_OK;
}
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