mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
811 lines
20 KiB
811 lines
20 KiB
|
|
#include <precomp.h>
|
|
|
|
//
|
|
// misc.c
|
|
//
|
|
// Author: Tom McGuire (tommcg) 2/97 - 12/97
|
|
//
|
|
// Copyright (C) Microsoft, 1997-1998.
|
|
//
|
|
// MICROSOFT CONFIDENTIAL
|
|
//
|
|
|
|
typedef struct _SUBALLOCATOR SUBALLOCATOR, *PSUBALLOCATOR;
|
|
|
|
struct _SUBALLOCATOR {
|
|
PVOID VirtualListTerminator;
|
|
PVOID *VirtualList;
|
|
PCHAR NextAvailable;
|
|
PCHAR LastAvailable;
|
|
ULONG GrowSize;
|
|
};
|
|
|
|
|
|
const ULONG gCrcTable32[ 256 ] = {
|
|
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
|
|
0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
|
|
0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
|
|
0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
|
|
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
|
|
0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
|
|
0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
|
|
0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
|
|
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
|
|
0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
|
|
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
|
|
0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
|
|
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
|
|
0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
|
|
0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
|
|
0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
|
|
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
|
|
0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
|
|
0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
|
|
0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
|
|
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
|
|
0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
|
|
0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
|
|
0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
|
|
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
|
|
0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
|
|
0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
|
|
0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
|
|
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
|
|
0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
|
|
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
|
|
0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
|
|
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
|
|
0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
|
|
0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
|
|
0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
|
|
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
|
|
0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
|
|
0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
|
|
0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
|
|
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
|
|
0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
|
|
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D };
|
|
|
|
|
|
#if defined( DEBUG ) || defined( DBG ) || defined( TESTCODE )
|
|
|
|
BOOL
|
|
Assert(
|
|
LPCSTR szText,
|
|
LPCSTR szFile,
|
|
DWORD dwLine
|
|
)
|
|
{
|
|
CHAR Buffer[ 512 ];
|
|
wsprintf( Buffer, "ASSERT( %s ) FAILED, %s (%d)\n", szText, szFile, dwLine );
|
|
OutputDebugString( Buffer );
|
|
DebugBreak();
|
|
return FALSE;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
#ifdef DONTCOMPILE // Not currently being used
|
|
|
|
VOID
|
|
InitializeCrc32Table(
|
|
VOID
|
|
)
|
|
{
|
|
ULONG i, j, Value;
|
|
|
|
for ( i = 0; i < 256; i++ ) {
|
|
for ( Value = i, j = 8; j > 0; j-- ) {
|
|
if ( Value & 1 ) {
|
|
Value = ( Value >> 1 ) ^ 0xEDB88320;
|
|
}
|
|
else {
|
|
Value >>= 1;
|
|
}
|
|
}
|
|
gCrcTable32[ i ] = Value;
|
|
}
|
|
}
|
|
|
|
#endif // DONTCOMPILE
|
|
|
|
|
|
#ifdef _M_IX86
|
|
#pragma warning( disable: 4035 ) // no return value
|
|
#endif
|
|
|
|
ULONG
|
|
Crc32(
|
|
IN ULONG InitialCrc,
|
|
IN PVOID Buffer,
|
|
IN ULONG ByteCount
|
|
)
|
|
{
|
|
|
|
#ifdef DONTCOMPILE // Not currently being used
|
|
|
|
//
|
|
// First determine if the CRC table has been initialized by checking
|
|
// that the last value in it is nonzero. Believe it or not, this is
|
|
// thread safe because two threads could initialize the table at the
|
|
// same time with no harm, and the last value to be initialized in the
|
|
// table is used to determine if the table has been initialized. On
|
|
// all hardware platforms (including Alpha) it is safe to assume that
|
|
// an aligned DWORD written to memory by one processor will be seen by
|
|
// the other processor(s) as either containing the value previously
|
|
// contained in that memory location, or the new written value, but not
|
|
// some weird unpredictable value.
|
|
//
|
|
|
|
if ( gCrcTable32[ 255 ] == 0 ) {
|
|
InitializeCrc32Table();
|
|
}
|
|
|
|
#endif // DONTCOMPILE
|
|
|
|
#ifdef _M_IX86
|
|
|
|
__asm {
|
|
|
|
mov ecx, ByteCount ; number of bytes in buffer
|
|
xor ebx, ebx ; ebx (bl) will be our table index
|
|
mov esi, Buffer ; buffer pointer
|
|
test ecx, ecx ; test for zero length buffer
|
|
mov eax, InitialCrc ; CRC-32 value
|
|
|
|
jnz short loopentry ; if non-zero buffer, start loop
|
|
jmp short exitfunc ; else exit (crc already in eax)
|
|
|
|
looptop: shr eax, 8 ; (crc>>8) (U1)
|
|
mov edx, gCrcTable32[ebx*4] ; fetch Table[ index ] (V1)
|
|
|
|
xor eax, edx ; crc=(crc>>8)^Table[index] (U1)
|
|
loopentry: mov bl, [esi] ; fetch next *buffer (V1)
|
|
|
|
inc esi ; buffer++ (U1)
|
|
xor bl, al ; index=(byte)crc^*buffer (V1)
|
|
|
|
dec ecx ; adjust counter (U1)
|
|
jnz short looptop ; loop while nBytes (V1)
|
|
|
|
shr eax, 8 ; remaining math on last byte
|
|
xor eax, gCrcTable32[ebx*4] ; eax returns new crc value
|
|
|
|
exitfunc:
|
|
|
|
}
|
|
|
|
#else // ! _M_IX86
|
|
|
|
{
|
|
ULONG Value = InitialCrc;
|
|
ULONG Count = ByteCount;
|
|
PUCHAR p = Buffer;
|
|
|
|
while ( Count-- ) {
|
|
Value = ( Value >> 8 ) ^ gCrcTable32[ (UCHAR)( *p++ ^ Value ) ];
|
|
}
|
|
|
|
return Value;
|
|
}
|
|
|
|
#endif // ! _M_IX86
|
|
}
|
|
|
|
#ifdef _M_IX86
|
|
#pragma warning( default: 4035 ) // no return value
|
|
#endif
|
|
|
|
|
|
BOOL
|
|
SafeCompleteCrc32(
|
|
IN PVOID Buffer,
|
|
IN ULONG ByteCount,
|
|
OUT PULONG CrcValue
|
|
)
|
|
{
|
|
BOOL Success = TRUE;
|
|
|
|
__try {
|
|
*CrcValue = Crc32( 0xFFFFFFFF, Buffer, ByteCount ) ^ 0xFFFFFFFF;
|
|
}
|
|
__except( EXCEPTION_EXECUTE_HANDLER ) {
|
|
SetLastError( GetExceptionCode() );
|
|
Success = FALSE;
|
|
}
|
|
|
|
return Success;
|
|
}
|
|
|
|
|
|
BOOL
|
|
SafeCompleteMD5(
|
|
IN PVOID Buffer,
|
|
IN ULONG ByteCount,
|
|
OUT PMD5_HASH MD5Value
|
|
)
|
|
{
|
|
BOOL Success = TRUE;
|
|
|
|
__try {
|
|
ComputeCompleteMD5( Buffer, ByteCount, MD5Value );
|
|
}
|
|
__except( EXCEPTION_EXECUTE_HANDLER ) {
|
|
SetLastError( GetExceptionCode() );
|
|
Success = FALSE;
|
|
}
|
|
|
|
return Success;
|
|
}
|
|
|
|
|
|
BOOL
|
|
MyMapViewOfFileA(
|
|
IN LPCSTR FileName,
|
|
OUT ULONG *FileSize,
|
|
OUT HANDLE *FileHandle,
|
|
OUT PVOID *MapBase
|
|
)
|
|
{
|
|
HANDLE InternalFileHandle;
|
|
BOOL Success;
|
|
|
|
InternalFileHandle = CreateFileA(
|
|
FileName,
|
|
GENERIC_READ,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
NULL,
|
|
OPEN_EXISTING,
|
|
FILE_FLAG_SEQUENTIAL_SCAN,
|
|
NULL
|
|
);
|
|
|
|
if ( InternalFileHandle != INVALID_HANDLE_VALUE ) {
|
|
|
|
Success = MyMapViewOfFileByHandle(
|
|
InternalFileHandle,
|
|
FileSize,
|
|
MapBase
|
|
);
|
|
|
|
if ( Success ) {
|
|
|
|
*FileHandle = InternalFileHandle;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
CloseHandle( InternalFileHandle );
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
BOOL
|
|
MyMapViewOfFileByHandle(
|
|
IN HANDLE FileHandle,
|
|
OUT ULONG *FileSize,
|
|
OUT PVOID *MapBase
|
|
)
|
|
{
|
|
ULONG InternalFileSize;
|
|
ULONG InternalFileSizeHigh;
|
|
HANDLE InternalMapHandle;
|
|
PVOID InternalMapBase;
|
|
|
|
InternalFileSize = GetFileSize( FileHandle, &InternalFileSizeHigh );
|
|
|
|
if ( InternalFileSizeHigh != 0 ) {
|
|
SetLastError( ERROR_OUTOFMEMORY );
|
|
return FALSE;
|
|
}
|
|
|
|
if ( InternalFileSize == 0 ) {
|
|
*MapBase = NULL;
|
|
*FileSize = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
if ( InternalFileSize != 0xFFFFFFFF ) {
|
|
|
|
InternalMapHandle = CreateFileMapping(
|
|
FileHandle,
|
|
NULL,
|
|
PAGE_WRITECOPY,
|
|
0,
|
|
0,
|
|
NULL
|
|
);
|
|
|
|
if ( InternalMapHandle != NULL ) {
|
|
|
|
InternalMapBase = MapViewOfFile(
|
|
InternalMapHandle,
|
|
FILE_MAP_COPY,
|
|
0,
|
|
0,
|
|
0
|
|
);
|
|
|
|
CloseHandle( InternalMapHandle );
|
|
|
|
if ( InternalMapBase != NULL ) {
|
|
|
|
*MapBase = InternalMapBase;
|
|
*FileSize = InternalFileSize;
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
BOOL
|
|
MyCreateMappedFileA(
|
|
IN LPCSTR FileName,
|
|
IN ULONG InitialSize,
|
|
OUT HANDLE *FileHandle,
|
|
OUT PVOID *MapBase
|
|
)
|
|
{
|
|
HANDLE InternalFileHandle;
|
|
BOOL Success;
|
|
|
|
InternalFileHandle = CreateFileA(
|
|
FileName,
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
FILE_SHARE_READ,
|
|
NULL,
|
|
CREATE_ALWAYS,
|
|
FILE_ATTRIBUTE_NORMAL,
|
|
NULL
|
|
);
|
|
|
|
if ( InternalFileHandle != INVALID_HANDLE_VALUE ) {
|
|
|
|
Success = MyCreateMappedFileByHandle(
|
|
InternalFileHandle,
|
|
InitialSize,
|
|
MapBase
|
|
);
|
|
|
|
if ( Success ) {
|
|
|
|
*FileHandle = InternalFileHandle;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
CloseHandle( InternalFileHandle );
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
BOOL
|
|
MyCreateMappedFileByHandle(
|
|
IN HANDLE FileHandle,
|
|
IN ULONG InitialSize,
|
|
OUT PVOID *MapBase
|
|
)
|
|
{
|
|
HANDLE InternalMapHandle;
|
|
PVOID InternalMapBase;
|
|
|
|
InternalMapHandle = CreateFileMapping(
|
|
FileHandle,
|
|
NULL,
|
|
PAGE_READWRITE,
|
|
0,
|
|
InitialSize,
|
|
NULL
|
|
);
|
|
|
|
if ( InternalMapHandle != NULL ) {
|
|
|
|
InternalMapBase = MapViewOfFile(
|
|
InternalMapHandle,
|
|
FILE_MAP_WRITE,
|
|
0,
|
|
0,
|
|
0
|
|
);
|
|
|
|
CloseHandle( InternalMapHandle );
|
|
|
|
if ( InternalMapBase != NULL ) {
|
|
|
|
*MapBase = InternalMapBase;
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
VOID
|
|
MyUnmapCreatedMappedFile(
|
|
IN HANDLE FileHandle,
|
|
IN PVOID MapBase,
|
|
IN ULONG FileSize,
|
|
IN PFILETIME FileTime OPTIONAL
|
|
)
|
|
{
|
|
FlushViewOfFile( MapBase, 0 );
|
|
UnmapViewOfFile( MapBase );
|
|
SetFilePointer( FileHandle, (LONG) FileSize, NULL, FILE_BEGIN );
|
|
SetEndOfFile( FileHandle );
|
|
SetFileTime( FileHandle, NULL, NULL, FileTime );
|
|
}
|
|
|
|
|
|
PVOID
|
|
__fastcall
|
|
MyVirtualAlloc(
|
|
ULONG Size
|
|
)
|
|
{
|
|
return VirtualAlloc( NULL, Size, MEM_COMMIT, PAGE_READWRITE );
|
|
}
|
|
|
|
|
|
VOID
|
|
__fastcall
|
|
MyVirtualFree(
|
|
PVOID Allocation
|
|
)
|
|
{
|
|
VirtualFree( Allocation, 0, MEM_RELEASE );
|
|
}
|
|
|
|
|
|
HANDLE
|
|
CreateSubAllocator(
|
|
IN ULONG InitialCommitSize,
|
|
IN ULONG GrowthCommitSize
|
|
)
|
|
{
|
|
PSUBALLOCATOR SubAllocator;
|
|
ULONG InitialSize;
|
|
ULONG GrowthSize;
|
|
|
|
InitialSize = ROUNDUP2( InitialCommitSize, MINIMUM_VM_ALLOCATION );
|
|
GrowthSize = ROUNDUP2( GrowthCommitSize, MINIMUM_VM_ALLOCATION );
|
|
|
|
SubAllocator = MyVirtualAlloc( InitialSize );
|
|
|
|
//
|
|
// If can't allocate entire initial size, back off to minimum size.
|
|
// Very large initial requests sometimes cannot be allocated simply
|
|
// because there is not enough contiguous address space.
|
|
//
|
|
|
|
if (( SubAllocator == NULL ) && ( InitialSize > GrowthSize )) {
|
|
InitialSize = GrowthSize;
|
|
SubAllocator = MyVirtualAlloc( InitialSize );
|
|
}
|
|
|
|
if (( SubAllocator == NULL ) && ( InitialSize > MINIMUM_VM_ALLOCATION )) {
|
|
InitialSize = MINIMUM_VM_ALLOCATION;
|
|
SubAllocator = MyVirtualAlloc( InitialSize );
|
|
}
|
|
|
|
if ( SubAllocator != NULL ) {
|
|
SubAllocator->NextAvailable = (PCHAR)SubAllocator + ROUNDUP2( sizeof( SUBALLOCATOR ), SUBALLOCATOR_ALIGNMENT );
|
|
SubAllocator->LastAvailable = (PCHAR)SubAllocator + InitialSize;
|
|
SubAllocator->VirtualList = (PVOID*)SubAllocator;
|
|
SubAllocator->GrowSize = GrowthSize;
|
|
}
|
|
|
|
return (HANDLE) SubAllocator;
|
|
}
|
|
|
|
|
|
PVOID
|
|
__fastcall
|
|
SubAllocate(
|
|
IN HANDLE hAllocator,
|
|
IN ULONG Size
|
|
)
|
|
{
|
|
PSUBALLOCATOR SubAllocator = (PSUBALLOCATOR) hAllocator;
|
|
PCHAR NewVirtual;
|
|
PCHAR Allocation;
|
|
ULONG AllocSize;
|
|
ULONG Available;
|
|
ULONG GrowSize;
|
|
|
|
ASSERT( Size < (ULONG)( ~(( SUBALLOCATOR_ALIGNMENT * 2 ) - 1 )));
|
|
|
|
AllocSize = ROUNDUP2( Size, SUBALLOCATOR_ALIGNMENT );
|
|
|
|
Available = (ULONG)( SubAllocator->LastAvailable - SubAllocator->NextAvailable );
|
|
|
|
if ( AllocSize <= Available ) {
|
|
|
|
Allocation = SubAllocator->NextAvailable;
|
|
|
|
SubAllocator->NextAvailable = Allocation + AllocSize;
|
|
|
|
return Allocation;
|
|
}
|
|
|
|
//
|
|
// Insufficient VM, so grow it. Make sure we grow it enough to satisfy
|
|
// the allocation request in case the request is larger than the grow
|
|
// size specified in CreateSubAllocator.
|
|
//
|
|
|
|
#ifdef TESTCODE
|
|
|
|
printf( "\nGrowing VM suballocater\n" );
|
|
|
|
#endif
|
|
|
|
GrowSize = SubAllocator->GrowSize;
|
|
|
|
if ( GrowSize < ( AllocSize + SUBALLOCATOR_ALIGNMENT )) {
|
|
GrowSize = ROUNDUP2(( AllocSize + SUBALLOCATOR_ALIGNMENT ), MINIMUM_VM_ALLOCATION );
|
|
}
|
|
|
|
NewVirtual = MyVirtualAlloc( GrowSize );
|
|
|
|
//
|
|
// If failed to alloc GrowSize VM, and the allocation could be satisfied
|
|
// with a minimum VM allocation, try allocating minimum VM to satisfy
|
|
// this request.
|
|
//
|
|
|
|
if (( NewVirtual == NULL ) && ( AllocSize <= ( MINIMUM_VM_ALLOCATION - SUBALLOCATOR_ALIGNMENT ))) {
|
|
GrowSize = MINIMUM_VM_ALLOCATION;
|
|
NewVirtual = MyVirtualAlloc( GrowSize );
|
|
}
|
|
|
|
if ( NewVirtual != NULL ) {
|
|
|
|
//
|
|
// Set LastAvailable to end of new VM block.
|
|
//
|
|
|
|
SubAllocator->LastAvailable = NewVirtual + GrowSize;
|
|
|
|
//
|
|
// Link new VM into list of VM allocations.
|
|
//
|
|
|
|
*(PVOID*)NewVirtual = SubAllocator->VirtualList;
|
|
SubAllocator->VirtualList = (PVOID*)NewVirtual;
|
|
|
|
//
|
|
// Requested allocation comes next.
|
|
//
|
|
|
|
Allocation = NewVirtual + SUBALLOCATOR_ALIGNMENT;
|
|
|
|
//
|
|
// Then set the NextAvailable for what's remaining.
|
|
//
|
|
|
|
SubAllocator->NextAvailable = Allocation + AllocSize;
|
|
|
|
//
|
|
// And return the allocation.
|
|
//
|
|
|
|
return Allocation;
|
|
}
|
|
|
|
//
|
|
// Could not allocate enough VM to satisfy request.
|
|
//
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
VOID
|
|
DestroySubAllocator(
|
|
IN HANDLE hAllocator
|
|
)
|
|
{
|
|
PSUBALLOCATOR SubAllocator = (PSUBALLOCATOR) hAllocator;
|
|
PVOID VirtualBlock = SubAllocator->VirtualList;
|
|
PVOID NextVirtualBlock;
|
|
|
|
do {
|
|
NextVirtualBlock = *(PVOID*)VirtualBlock;
|
|
MyVirtualFree( VirtualBlock );
|
|
VirtualBlock = NextVirtualBlock;
|
|
}
|
|
while ( VirtualBlock != NULL );
|
|
}
|
|
|
|
|
|
LPSTR
|
|
__fastcall
|
|
MySubAllocStrDup(
|
|
IN HANDLE SubAllocator,
|
|
IN LPCSTR String
|
|
)
|
|
{
|
|
ULONG Length = (ULONG)strlen( String );
|
|
LPSTR Buffer = SubAllocate( SubAllocator, Length + 1 );
|
|
|
|
if ( Buffer ) {
|
|
memcpy( Buffer, String, Length ); // no need to copy NULL terminator
|
|
}
|
|
|
|
return Buffer;
|
|
}
|
|
|
|
|
|
LPSTR
|
|
MySubAllocStrDupAndCat(
|
|
IN HANDLE SubAllocator,
|
|
IN LPCSTR String1,
|
|
IN LPCSTR String2,
|
|
IN CHAR Separator
|
|
)
|
|
{
|
|
ULONG Length1 = (ULONG)strlen( String1 );
|
|
ULONG Length2 = (ULONG)strlen( String2 );
|
|
LPSTR Buffer = SubAllocate( SubAllocator, Length1 + Length2 + 2 );
|
|
|
|
if ( Buffer ) {
|
|
|
|
memcpy( Buffer, String1, Length1 );
|
|
|
|
if (( Separator != 0 ) && ( Length1 > 0 ) && ( Buffer[ Length1 - 1 ] != Separator )) {
|
|
Buffer[ Length1++ ] = Separator;
|
|
}
|
|
|
|
memcpy( Buffer + Length1, String2, Length2 ); // no need to terminate
|
|
}
|
|
|
|
return Buffer;
|
|
}
|
|
|
|
|
|
VOID
|
|
MyLowercase(
|
|
IN OUT LPSTR String
|
|
)
|
|
{
|
|
LPSTR p;
|
|
|
|
for ( p = String; *p; p++ ) {
|
|
if (( *p >= 'A' ) && ( *p <= 'Z' )) {
|
|
*p |= 0x20;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
#ifdef DONTCOMPILE // not used currently
|
|
|
|
DWORD MyProcessHeap;
|
|
|
|
PVOID
|
|
MyHeapAllocZero(
|
|
IN ULONG Size
|
|
)
|
|
{
|
|
PVOID Allocation;
|
|
|
|
if ( MyProcessHeap == NULL ) {
|
|
MyProcessHeap = GetProcessHeap();
|
|
}
|
|
|
|
Allocation = HeapAlloc( MyProcessHeap, HEAP_ZERO_MEMORY, Size );
|
|
|
|
if ( Allocation == NULL ) {
|
|
SetLastError( ERROR_OUTOFMEMORY );
|
|
}
|
|
|
|
return Allocation;
|
|
}
|
|
|
|
|
|
VOID
|
|
MyHeapFree(
|
|
IN PVOID Allocation
|
|
)
|
|
{
|
|
HeapFree( MyProcessHeap, 0, Allocation );
|
|
}
|
|
|
|
#endif // DONTCOMPILE
|
|
|
|
|
|
ULONG
|
|
HashName(
|
|
IN LPCSTR Name
|
|
)
|
|
{
|
|
ULONG Length = (ULONG)strlen( Name );
|
|
ULONG Hash = ~Length;
|
|
|
|
while ( Length-- ) {
|
|
Hash = _rotl( Hash, 3 ) ^ *Name++;
|
|
}
|
|
|
|
return Hash;
|
|
}
|
|
|
|
|
|
ULONG
|
|
HashNameCaseInsensitive(
|
|
IN LPCSTR Name
|
|
)
|
|
{
|
|
ULONG Length = (ULONG)strlen( Name );
|
|
ULONG Hash = ~Length;
|
|
|
|
while ( Length-- ) {
|
|
Hash = _rotl( Hash, 3 ) ^ ( *Name++ & 0xDF ); // mask case bit
|
|
}
|
|
|
|
return Hash;
|
|
}
|
|
|
|
|
|
UCHAR
|
|
__inline
|
|
LowNibbleToHexChar(
|
|
ULONG Value
|
|
)
|
|
{
|
|
return "0123456789abcdef"[ Value & 0x0000000F ];
|
|
}
|
|
|
|
|
|
VOID
|
|
DwordToHexString(
|
|
IN DWORD Value,
|
|
OUT LPSTR Buffer // writes exactly 9 bytes including terminator
|
|
)
|
|
{
|
|
ULONG i;
|
|
|
|
Buffer[ 8 ] = 0;
|
|
|
|
i = 8;
|
|
|
|
do {
|
|
Buffer[ --i ] = LowNibbleToHexChar( Value );
|
|
Value >>= 4;
|
|
}
|
|
while ( i != 0 );
|
|
}
|
|
|
|
|
|
BOOL
|
|
HashToHexString(
|
|
IN PMD5_HASH HashValue,
|
|
OUT LPSTR Buffer // must be at least 33 bytes
|
|
)
|
|
{
|
|
ULONG i;
|
|
|
|
for ( i = 0; i < sizeof( MD5_HASH ); i++ ) {
|
|
|
|
*Buffer++ = LowNibbleToHexChar( HashValue->Byte[ i ] >> 4 );
|
|
*Buffer++ = LowNibbleToHexChar( HashValue->Byte[ i ] );
|
|
}
|
|
|
|
*Buffer = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|