mspatcha_main.c File Reference

#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "ndk/rtlfuncs.h"
#include "patchapi.h"
#include "lzx.h"
#include "wine/debug.h"

Include dependency graph for mspatcha_main.c:

Go to the source code of this file.

Classes
struct	_SAFE_READ
struct	_PATCH_HEADER

Macros
#define	WIN32_NO_STATUS
#define	SIGNATURE_MIN_SIZE   9
#define	UNKNOWN_FLAGS_COMBINATION   0x00c40001

Typedefs
typedef struct _SAFE_READ	SAFE_READ
typedef struct _SAFE_READ *	PSAFE_READ

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (mspatcha)
ReadByte
Read the next byte available from Parameters pRead pRead The input buffer Returns The byte, or 0
BYTE	ReadByte (PSAFE_READ pRead)
ReadUShort
Read the next unsigned short available from Parameters pRead pRead The input buffer Returns The unsigned short, or 0
USHORT	ReadUShort (PSAFE_READ pRead)
ReadDWord
Read the next dword available from Parameters pRead pRead The input buffer Returns The dword, or 0
DWORD	ReadDWord (PSAFE_READ pRead)
DecodeDWord
Read the next variable length-encoded dword from Parameters pRead pRead The input buffer Returns The dword, or 0
DWORD	DecodeDWord (PSAFE_READ pRead)
MapFile
Map a view of a file into readonly memory Parameters hFile The input file handle, readable dwSize Mapped file size (out) Returns A Pointer to the start of the memory
static PBYTE	MapFile (HANDLE hFile, DWORD *dwSize)
BOOL WINAPI	DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
BOOL WINAPI	ApplyPatchToFileA (LPCSTR patch_file, LPCSTR old_file, LPCSTR new_file, ULONG apply_flags)
ParseHeader
Parse a Patch file header Note The current implementation is far from complete! Parameters Patch Buffer pointing to the raw patch data Header The result of the parsed header Returns STATUS_SUCCESS on success, an error code otherwise
DWORD	ParseHeader (SAFE_READ *Patch, PATCH_HEADER *Header)
CreateNewFileFromPatch
Using the input Parameters Header and Patch,create a new file on new_file Header Parsed / preprocessed patch header Patch Memory buffer pointing to the patch payload new_file A handle to the output file. This file will be resized Returns STATUS_SUCCESS on success, an error code otherwise
DWORD	CreateNewFileFromPatch (PATCH_HEADER *Header, SAFE_READ *Patch, HANDLE new_file)
BOOL WINAPI	ApplyPatchToFileByHandles (HANDLE patch_file, HANDLE old_file, HANDLE new_file, ULONG apply_flags)
BOOL WINAPI	ApplyPatchToFileW (LPCWSTR patch_file, LPCWSTR old_file, LPCWSTR new_file, ULONG apply_flags)
BOOL WINAPI	GetFilePatchSignatureA (LPCSTR filename, ULONG flags, PVOID data, ULONG ignore_range_count, PPATCH_IGNORE_RANGE ignore_range, ULONG retain_range_count, PPATCH_RETAIN_RANGE retain_range, ULONG bufsize, PVOID buffer)
BOOL WINAPI	GetFilePatchSignatureByHandle (HANDLE hFile, ULONG flags, PVOID data, ULONG ignore_range_count, PPATCH_IGNORE_RANGE ignore_range, ULONG retain_range_count, PPATCH_RETAIN_RANGE retain_range, ULONG bufsize, PVOID buffer)
BOOL WINAPI	GetFilePatchSignatureW (LPCWSTR filename, ULONG flags, PVOID data, ULONG ignore_range_count, PPATCH_IGNORE_RANGE ignore_range, ULONG retain_range_count, PPATCH_RETAIN_RANGE retain_range, ULONG bufsize, PVOID buffer)
BOOL WINAPI	TestApplyPatchToFileA (LPCSTR patch_file, LPCSTR old_file, ULONG apply_flags)
BOOL WINAPI	TestApplyPatchToFileByHandles (HANDLE patch_file, HANDLE old_file, ULONG apply_flags)
BOOL WINAPI	TestApplyPatchToFileW (LPCWSTR patch_file, LPCWSTR old_file, ULONG apply_flags)

Variables
static const char	szHexString [] = "0123456789abcdef"

DecodeInt
Read the next variable length-encoded int from Parameters pRead pRead The input buffer Returns The int, or 0
typedef struct _PATCH_HEADER	PATCH_HEADER
INT	DecodeInt (PSAFE_READ pRead)

Macro Definition Documentation

SIGNATURE_MIN_SIZE

#define SIGNATURE_MIN_SIZE   9

Definition at line 32 of file mspatcha_main.c.

UNKNOWN_FLAGS_COMBINATION

#define UNKNOWN_FLAGS_COMBINATION   0x00c40001

Definition at line 34 of file mspatcha_main.c.

WIN32_NO_STATUS

#define WIN32_NO_STATUS

Definition at line 22 of file mspatcha_main.c.

Typedef Documentation

PATCH_HEADER

typedef struct _PATCH_HEADER PATCH_HEADER

PSAFE_READ

typedef struct _SAFE_READ * PSAFE_READ

SAFE_READ

typedef struct _SAFE_READ SAFE_READ

Function Documentation

ApplyPatchToFileA()

BOOL WINAPI ApplyPatchToFileA	(	LPCSTR	patch_file,
		LPCSTR	old_file,
		LPCSTR	new_file,
		ULONG	apply_flags
	)

Definition at line 230 of file mspatcha_main.c.

{
    BOOL ret = FALSE;
    HANDLE hPatch, hOld, hNew;
 
    hPatch = CreateFileA(patch_file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                         OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
    if (hPatch != INVALID_HANDLE_VALUE)
    {
        hOld = CreateFileA(old_file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                           OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
        if (hOld != INVALID_HANDLE_VALUE)
        {
            hNew = CreateFileA(new_file, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL,
                               CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
            if (hNew != INVALID_HANDLE_VALUE)
            {
                ret = ApplyPatchToFileByHandles(hPatch, hOld, hNew, apply_flags);
                CloseHandle(hNew);
            }
            CloseHandle(hOld);
        }
        CloseHandle(hPatch);
    }
 
    return ret;
}

Referenced by apply_patch().

ApplyPatchToFileByHandles()

BOOL WINAPI ApplyPatchToFileByHandles	(	HANDLE	patch_file,
		HANDLE	old_file,
		HANDLE	new_file,
		ULONG	apply_flags
	)

Definition at line 388 of file mspatcha_main.c.

{
    SAFE_READ Patch, OldFile;
    DWORD dwStatus;
    PATCH_HEADER Header;
 
    Patch.Root = Patch.Ptr = MapFile(patch_file, &Patch.Size);
    if (!Patch.Root)
    {
        SetLastError(ERROR_PATCH_CORRUPT);
        return FALSE;
    }
 
    /* Let's decode the header */
    dwStatus = ParseHeader(&Patch, &Header);
    if (dwStatus != STATUS_SUCCESS)
    {
        UnmapViewOfFile(Patch.Root);
        SetLastError(dwStatus);
        return FALSE;
    }
 
    OldFile.Root = OldFile.Ptr = MapFile(old_file, &OldFile.Size);
    if (OldFile.Root)
    {
        DWORD dwCrc;
 
        /* Verify the input file */
        dwCrc = RtlComputeCrc32(0, OldFile.Root, OldFile.Size);
        if (OldFile.Size == Header.OldSize && dwCrc == Header.OldCrc)
        {
            if (apply_flags & APPLY_OPTION_TEST_ONLY)
                dwStatus = STATUS_SUCCESS;
            else
                dwStatus = CreateNewFileFromPatch(&Header, &Patch, new_file);
        }
        else
        {
            dwStatus = ERROR_PATCH_WRONG_FILE;
        }
        UnmapViewOfFile(OldFile.Root);
    }
    else
    {
        dwStatus = GetLastError();
        if (dwStatus == STATUS_SUCCESS)
            dwStatus = ERROR_PATCH_NOT_AVAILABLE;
    }
 
    UnmapViewOfFile(Patch.Root);
    SetLastError(dwStatus);
    return dwStatus == STATUS_SUCCESS;
}

Referenced by ApplyPatchToFileA(), ApplyPatchToFileW(), and TestApplyPatchToFileByHandles().

ApplyPatchToFileW()

BOOL WINAPI ApplyPatchToFileW	(	LPCWSTR	patch_file,
		LPCWSTR	old_file,
		LPCWSTR	new_file,
		ULONG	apply_flags
	)

Definition at line 445 of file mspatcha_main.c.

{
    BOOL ret = FALSE;
    HANDLE hPatch, hOld, hNew;
 
    hPatch = CreateFileW(patch_file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                         OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
    if (hPatch != INVALID_HANDLE_VALUE)
    {
        hOld = CreateFileW(old_file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                           OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
        if (hOld != INVALID_HANDLE_VALUE)
        {
            hNew = CreateFileW(new_file, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL,
                               CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
            if (hNew != INVALID_HANDLE_VALUE)
            {
                ret = ApplyPatchToFileByHandles(hPatch, hOld, hNew, apply_flags);
                CloseHandle(hNew);
            }
            CloseHandle(hOld);
        }
        CloseHandle(hPatch);
    }
 
    return ret;
}

Referenced by msi_apply_filepatch().

CreateNewFileFromPatch()

DWORD CreateNewFileFromPatch	(	PATCH_HEADER *	Header,
		SAFE_READ *	Patch,
		HANDLE	new_file
	)

Definition at line 340 of file mspatcha_main.c.

{
    SAFE_READ NewFile;
    HANDLE hMap;
    USHORT BlockSize;
    DWORD dwStatus;
    struct LZXstate* state;
    int lzxResult;
 
    hMap = CreateFileMappingW(new_file, NULL, PAGE_READWRITE, 0, Header->OutputSize, NULL);
    if (hMap == INVALID_HANDLE_VALUE)
        return ERROR_PATCH_NOT_AVAILABLE;
 
    NewFile.Root = NewFile.Ptr = MapViewOfFile(hMap, FILE_MAP_WRITE, 0, 0, 0);
    CloseHandle(hMap);
    NewFile.Size = Header->OutputSize;
 
    if (!NewFile.Root)
        return ERROR_PATCH_NOT_AVAILABLE;
 
    /* At this point Patch->Ptr should point to the payload */
    BlockSize = ReadUShort(Patch);
 
    /* This window size does not work on all files (for example, MS SQL Express 2008 setup) */
    state = LZXinit(17);
    if (state)
    {
        lzxResult = LZXdecompress(state, Patch->Ptr, NewFile.Ptr, BlockSize, NewFile.Size);
        LZXteardown(state);
 
        if (lzxResult == DECR_OK)
            dwStatus = STATUS_SUCCESS;
        else
            dwStatus = ERROR_PATCH_DECODE_FAILURE;
    }
    else
    {
        dwStatus = ERROR_INSUFFICIENT_BUFFER;
    }
 
    UnmapViewOfFile(NewFile.Root);
    return dwStatus;
}

Referenced by ApplyPatchToFileByHandles().

DecodeDWord()

DWORD DecodeDWord

(

PSAFE_READ

pRead

)

Definition at line 120 of file mspatcha_main.c.

{
    UINT Result = 0, offset;
 
    for (offset = 0; offset < 32; offset += 7)
    {
        DWORD val = ReadByte(pRead);
        Result |= ((val & 0x7f) << offset);
        if (val & 0x80)
            break;
    }
 
    return Result;
}

Referenced by ParseHeader().

DecodeInt()

INT DecodeInt

(

PSAFE_READ

pRead

)

Definition at line 145 of file mspatcha_main.c.

{
    INT Result = 0, offset;
 
    for (offset = 0; offset < 32; offset += 6)
    {
        INT val = (INT)(DWORD)ReadByte(pRead);
        Result |= ((val & 0x3f) << offset);
        if (val & 0x80)
        {
            if (val & 0x40)
                Result *= -1;
            break;
        }
    }
 
    return Result;
}

Referenced by ParseHeader().

DllMain()

BOOL WINAPI DllMain	(	HINSTANCE	hinstDLL,
		DWORD	fdwReason,
		LPVOID	lpvReserved
	)

Definition at line 215 of file mspatcha_main.c.

{
    switch (fdwReason)
    {
    case DLL_PROCESS_ATTACH:
        DisableThreadLibraryCalls(hinstDLL);
        break;
    }
 
    return TRUE;
}

GetFilePatchSignatureA()

BOOL WINAPI GetFilePatchSignatureA	(	LPCSTR	filename,
		ULONG	flags,
		PVOID	data,
		ULONG	ignore_range_count,
		PPATCH_IGNORE_RANGE	ignore_range,
		ULONG	retain_range_count,
		PPATCH_RETAIN_RANGE	retain_range,
		ULONG	bufsize,
		PVOID	buffer
	)

Definition at line 476 of file mspatcha_main.c.

{
    BOOL ret = FALSE;
    HANDLE hFile;
 
    hFile = CreateFileA(filename, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                        OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
    if (hFile != INVALID_HANDLE_VALUE)
    {
        ret = GetFilePatchSignatureByHandle(hFile, flags, data, ignore_range_count, ignore_range,
                                            retain_range_count, retain_range, bufsize, buffer);
        CloseHandle(hFile);
    }
 
    return ret;
}

Referenced by validate_signature().

GetFilePatchSignatureByHandle()

BOOL WINAPI GetFilePatchSignatureByHandle	(	HANDLE	hFile,
		ULONG	flags,
		PVOID	data,
		ULONG	ignore_range_count,
		PPATCH_IGNORE_RANGE	ignore_range,
		ULONG	retain_range_count,
		PPATCH_RETAIN_RANGE	retain_range,
		ULONG	bufsize,
		PVOID	buffer
	)

Definition at line 498 of file mspatcha_main.c.

{
    BOOL ret = FALSE;
    DWORD dwSize, ulCrc;
    PBYTE pData;
 
    if (flags)
        FIXME("Unhandled flags 0x%x\n", flags);
    if (ignore_range_count)
        FIXME("Unhandled ignore_range_count %u\n", ignore_range_count);
    if (retain_range_count)
        FIXME("Unhandled ignore_range_count %u\n", retain_range_count);
 
    if ((pData = MapFile(hFile, &dwSize)))
    {
        if (dwSize >= 2 && *(PWORD)pData == IMAGE_DOS_SIGNATURE)
        {
            FIXME("Potentially unimplemented case, normalized signature\n");
        }
 
        ulCrc = RtlComputeCrc32(0, pData, dwSize);
        if (bufsize >= SIGNATURE_MIN_SIZE)
        {
            char *pBuffer = buffer;
            pBuffer[8] = '\0';
            for (dwSize = 0; dwSize < 8; ++dwSize)
            {
                pBuffer[7 - dwSize] = szHexString[ulCrc & 0xf];
                ulCrc >>= 4;
            }
            ret = TRUE;
        }
        UnmapViewOfFile(pData);
 
        if (bufsize < SIGNATURE_MIN_SIZE)
            SetLastError(ERROR_INSUFFICIENT_BUFFER);
    }
 
    return ret;
}

Referenced by GetFilePatchSignatureA(), GetFilePatchSignatureW(), and validate_signature().

GetFilePatchSignatureW()

BOOL WINAPI GetFilePatchSignatureW	(	LPCWSTR	filename,
		ULONG	flags,
		PVOID	data,
		ULONG	ignore_range_count,
		PPATCH_IGNORE_RANGE	ignore_range,
		ULONG	retain_range_count,
		PPATCH_RETAIN_RANGE	retain_range,
		ULONG	bufsize,
		PVOID	buffer
	)

Definition at line 544 of file mspatcha_main.c.

{
    CHAR LocalBuf[SIGNATURE_MIN_SIZE];
    BOOL ret = FALSE;
    HANDLE hFile;
 
    hFile = CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                        OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
    if (hFile != INVALID_HANDLE_VALUE)
    {
        ret = GetFilePatchSignatureByHandle(hFile, flags, data, ignore_range_count, ignore_range,
                                            retain_range_count, retain_range, sizeof(LocalBuf), LocalBuf);
        CloseHandle(hFile);
 
        if (bufsize < (SIGNATURE_MIN_SIZE * sizeof(WCHAR)))
        {
            SetLastError(ERROR_INSUFFICIENT_BUFFER);
            return FALSE;
        }
        if (ret)
        {
            MultiByteToWideChar(CP_ACP, 0, LocalBuf, -1, buffer, bufsize / sizeof(WCHAR));
        }
    }
 
    return ret;
}

Referenced by validate_signature().

MapFile()

static PBYTE MapFile ( HANDLE  hFile, DWORD *  dwSize  )

static

Definition at line 194 of file mspatcha_main.c.

{
    HANDLE hMap;
    PVOID pView;
 
    *dwSize = GetFileSize(hFile, NULL);
    hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL);
    if (hMap != INVALID_HANDLE_VALUE)
    {
        pView = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0);
        CloseHandle(hMap);
        return pView;
    }
 
    return NULL;
}

Referenced by ApplyPatchToFileByHandles(), and GetFilePatchSignatureByHandle().

ParseHeader()

DWORD ParseHeader	(	SAFE_READ *	Patch,
		PATCH_HEADER *	Header
	)

Definition at line 272 of file mspatcha_main.c.

{
    DWORD Crc, Unknown;
    int Delta;
 
    ZeroMemory(Header, sizeof(*Header));
 
    /* Validate the patch */
    Crc = RtlComputeCrc32(0, Patch->Root, Patch->Size);
    if (Crc != ~0)
        return ERROR_PATCH_CORRUPT;
 
    if (ReadDWord(Patch) != '91AP')
        return ERROR_PATCH_DECODE_FAILURE;
 
    /* Read the flags, warn about an unknown combination */
    Header->Flags = ReadDWord(Patch);
    if (Header->Flags ^ UNKNOWN_FLAGS_COMBINATION)
        ERR("Unknown flags: 0x%x, patch will most likely fail\n", Header->Flags ^ UNKNOWN_FLAGS_COMBINATION);
 
    /* 0x5bb3284e, 0x5bb33562, 0x5bb357b1 */
    Unknown = ReadDWord(Patch);
    TRACE("Unknown: 0x%x\n", Unknown);
 
    Header->OutputSize = DecodeDWord(Patch);
    Header->OutputCrc = ReadDWord(Patch);
 
    Unknown = ReadByte(Patch);
    if (Unknown != 1)
        ERR("Field after CRC is not 1 but %u\n", Unknown);
 
    Delta = DecodeInt(Patch);
    Header->OldSize = Header->OutputSize + Delta;
    Header->OldCrc = ReadDWord(Patch);
 
    Unknown = ReadUShort(Patch);
    if (Unknown != 0)
        ERR("Field1 after OldCrc is not 0 but %u\n", Unknown);
 
    Unknown = DecodeDWord(Patch);
    if (Unknown != 0)
        ERR("Field2 after OldCrc is not 0 but %u\n", Unknown);
 
    Header->DataSize = DecodeDWord(Patch);
                            /* Remaining data, minus the CRC appended */
    if (Header->DataSize != (Patch->Size - (Patch->Ptr - Patch->Root) - sizeof(DWORD)))
    {
        ERR("Unable to read header, check previous logging!\n");
        return ERROR_PATCH_DECODE_FAILURE;
    }
    return STATUS_SUCCESS;
}

Referenced by ApplyPatchToFileByHandles().

ReadByte()

BYTE ReadByte

(

PSAFE_READ

pRead

)

Definition at line 57 of file mspatcha_main.c.

{
    if (pRead->Ptr + sizeof(BYTE) <= (pRead->Root + pRead->Size))
    {
        BYTE Value = *(PBYTE)pRead->Ptr;
        pRead->Ptr += sizeof(BYTE);
        return Value;
    }
    pRead->Ptr = pRead->Root + pRead->Size;
    return 0;
}

Referenced by DecodeDWord(), DecodeInt(), and ParseHeader().

ReadDWord()

DWORD ReadDWord

(

PSAFE_READ

pRead

)

Definition at line 99 of file mspatcha_main.c.

{
    if (pRead->Ptr + sizeof(DWORD) <= (pRead->Root + pRead->Size))
    {
        DWORD Value = *(PDWORD)pRead->Ptr;
        pRead->Ptr += sizeof(DWORD);
        return Value;
    }
    pRead->Ptr = pRead->Root + pRead->Size;
    return 0;
}

Referenced by ParseHeader().

ReadUShort()

USHORT ReadUShort

(

PSAFE_READ

pRead

)

Definition at line 78 of file mspatcha_main.c.

{
    if (pRead->Ptr + sizeof(USHORT) <= (pRead->Root + pRead->Size))
    {
        USHORT Value = *(PUSHORT)pRead->Ptr;
        pRead->Ptr += sizeof(USHORT);
        return Value;
    }
    pRead->Ptr = pRead->Root + pRead->Size;
    return 0;
}

Referenced by CreateNewFileFromPatch(), and ParseHeader().

TestApplyPatchToFileA()

BOOL WINAPI TestApplyPatchToFileA	(	LPCSTR	patch_file,
		LPCSTR	old_file,
		ULONG	apply_flags
	)

Definition at line 577 of file mspatcha_main.c.

{
    BOOL ret = FALSE;
    HANDLE hPatch, hOld;
 
    hPatch = CreateFileA(patch_file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                         OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
    if (hPatch != INVALID_HANDLE_VALUE)
    {
        hOld = CreateFileA(old_file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                           OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
        if (hOld != INVALID_HANDLE_VALUE)
        {
            ret = TestApplyPatchToFileByHandles(hPatch, hOld, apply_flags);
            CloseHandle(hOld);
        }
        CloseHandle(hPatch);
    }
 
    return ret;
}

Referenced by apply_patch().

TestApplyPatchToFileByHandles()

BOOL WINAPI TestApplyPatchToFileByHandles	(	HANDLE	patch_file,
		HANDLE	old_file,
		ULONG	apply_flags
	)

Definition at line 602 of file mspatcha_main.c.

{
    return ApplyPatchToFileByHandles(patch_file, old_file, INVALID_HANDLE_VALUE, apply_flags | APPLY_OPTION_TEST_ONLY);
}

Referenced by apply_patch(), TestApplyPatchToFileA(), and TestApplyPatchToFileW().

TestApplyPatchToFileW()

BOOL WINAPI TestApplyPatchToFileW	(	LPCWSTR	patch_file,
		LPCWSTR	old_file,
		ULONG	apply_flags
	)

Definition at line 610 of file mspatcha_main.c.

{
    BOOL ret = FALSE;
    HANDLE hPatch, hOld;
 
    hPatch = CreateFileW(patch_file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                         OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
    if (hPatch != INVALID_HANDLE_VALUE)
    {
        hOld = CreateFileW(old_file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                           OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0);
        if (hOld != INVALID_HANDLE_VALUE)
        {
            ret = TestApplyPatchToFileByHandles(hPatch, hOld, apply_flags);
            CloseHandle(hOld);
        }
        CloseHandle(hPatch);
    }
 
    return ret;
}

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

mspatcha

)

Variable Documentation

szHexString

const char szHexString[] = "0123456789abcdef"

static

Definition at line 31 of file mspatcha_main.c.

Referenced by GetFilePatchSignatureByHandle().