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reactos/sdk/lib/rtl/unicode.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
* PURPOSE: Unicode Conversion Routines
* FILE: lib/rtl/unicode.c
* PROGRAMMER: Alex Ionescu (alex@relsoft.net)
* Emanuele Aliberti
* Gunnar Dalsnes
*/
/* INCLUDES *****************************************************************/
#include <rtl.h>
#define NDEBUG
#include <debug.h>
#include <wine/unicode.h>
/* GLOBALS *******************************************************************/
extern BOOLEAN NlsMbCodePageTag;
extern BOOLEAN NlsMbOemCodePageTag;
extern PUSHORT NlsLeadByteInfo;
extern USHORT NlsOemDefaultChar;
extern USHORT NlsUnicodeDefaultChar;
extern PUSHORT NlsOemLeadByteInfo;
extern PWCHAR NlsOemToUnicodeTable;
extern PCHAR NlsUnicodeToOemTable;
extern PUSHORT NlsUnicodeToMbOemTable;
/* FUNCTIONS *****************************************************************/
NTSTATUS
NTAPI
RtlMultiAppendUnicodeStringBuffer(OUT PRTL_UNICODE_STRING_BUFFER StringBuffer,
IN ULONG NumberOfAddends,
IN PCUNICODE_STRING Addends)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
/*
* @implemented
*/
WCHAR
NTAPI
RtlAnsiCharToUnicodeChar(IN OUT PUCHAR *AnsiChar)
{
ULONG Size;
NTSTATUS Status;
WCHAR UnicodeChar = L' ';
PAGED_CODE_RTL();
if (NlsLeadByteInfo)
{
Size = (NlsLeadByteInfo[**AnsiChar] == 0) ? 1 : 2;
}
else
{
DPRINT("HACK::Shouldn't have happened! Consider fixing Usetup and registry entries it creates on install\n");
Size = 1;
}
Status = RtlMultiByteToUnicodeN(&UnicodeChar,
sizeof(WCHAR),
NULL,
(PCHAR)*AnsiChar,
Size);
if (!NT_SUCCESS(Status))
{
UnicodeChar = L' ';
}
*AnsiChar += Size;
return UnicodeChar;
}
/*
* @implemented
*
* NOTES
* This function always writes a terminating '\0'.
* If the dest buffer is too small a partial copy is NOT performed!
*/
NTSTATUS
NTAPI
RtlAnsiStringToUnicodeString(
IN OUT PUNICODE_STRING UniDest,
IN PANSI_STRING AnsiSource,
IN BOOLEAN AllocateDestinationString)
{
NTSTATUS Status;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
if (NlsMbCodePageTag == FALSE)
{
Length = (AnsiSource->Length + 1) * sizeof(WCHAR);
}
else
{
Length = RtlxAnsiStringToUnicodeSize(AnsiSource);
}
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
UniDest->Length = (USHORT)Length - sizeof(WCHAR);
if (AllocateDestinationString)
{
UniDest->Buffer = RtlpAllocateStringMemory(Length, TAG_USTR);
UniDest->MaximumLength = (USHORT)Length;
if (!UniDest->Buffer) return STATUS_NO_MEMORY;
}
else if (UniDest->Length >= UniDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
/* UniDest->MaximumLength must be even due to sizeof(WCHAR) being 2 */
ASSERT(!(UniDest->MaximumLength & 1) && UniDest->Length <= UniDest->MaximumLength);
Status = RtlMultiByteToUnicodeN(UniDest->Buffer,
UniDest->Length,
&Index,
AnsiSource->Buffer,
AnsiSource->Length);
if (!NT_SUCCESS(Status))
{
if (AllocateDestinationString)
{
RtlpFreeStringMemory(UniDest->Buffer, TAG_USTR);
UniDest->Buffer = NULL;
}
return Status;
}
UniDest->Buffer[Index / sizeof(WCHAR)] = UNICODE_NULL;
return Status;
}
/*
* @implemented
*
* RETURNS
* The calculated size in bytes including nullterm.
*/
ULONG
NTAPI
RtlxAnsiStringToUnicodeSize(IN PCANSI_STRING AnsiString)
{
ULONG Size;
PAGED_CODE_RTL();
/* Convert from Mb String to Unicode Size */
RtlMultiByteToUnicodeSize(&Size,
AnsiString->Buffer,
AnsiString->Length);
/* Return the size plus the null-char */
return(Size + sizeof(WCHAR));
}
/*
* @implemented
*
* NOTES
* If src->length is zero dest is unchanged.
* Dest is never nullterminated.
*/
NTSTATUS
NTAPI
RtlAppendStringToString(IN PSTRING Destination,
IN const STRING *Source)
{
USHORT SourceLength = Source->Length;
if (SourceLength)
{
if (Destination->Length + SourceLength > Destination->MaximumLength)
{
return STATUS_BUFFER_TOO_SMALL;
}
RtlMoveMemory(&Destination->Buffer[Destination->Length],
Source->Buffer,
SourceLength);
Destination->Length += SourceLength;
}
return STATUS_SUCCESS;
}
/*
* @implemented
*
* NOTES
* If src->length is zero dest is unchanged.
* Dest is nullterminated when the MaximumLength allowes it.
* When dest fits exactly in MaximumLength characters the nullterm is ommitted.
*/
NTSTATUS
NTAPI
RtlAppendUnicodeStringToString(
IN OUT PUNICODE_STRING Destination,
IN PCUNICODE_STRING Source)
{
USHORT SourceLength = Source->Length;
PWCHAR Buffer = &Destination->Buffer[Destination->Length / sizeof(WCHAR)];
if (SourceLength)
{
if ((SourceLength + Destination->Length) > Destination->MaximumLength)
{
return STATUS_BUFFER_TOO_SMALL;
}
RtlMoveMemory(Buffer, Source->Buffer, SourceLength);
Destination->Length += SourceLength;
/* append terminating '\0' if enough space */
if (Destination->MaximumLength > Destination->Length)
{
Buffer[SourceLength / sizeof(WCHAR)] = UNICODE_NULL;
}
}
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlCharToInteger (NTDLL.@)
* @implemented
* Converts a character string into its integer equivalent.
*
* RETURNS
* Success: STATUS_SUCCESS. value contains the converted number
* Failure: STATUS_INVALID_PARAMETER, if base is not 0, 2, 8, 10 or 16.
* STATUS_ACCESS_VIOLATION, if value is NULL.
*
* NOTES
* For base 0 it uses 10 as base and the string should be in the format
* "{whitespace} [+|-] [0[x|o|b]] {digits}".
* For other bases the string should be in the format
* "{whitespace} [+|-] {digits}".
* No check is made for value overflow, only the lower 32 bits are assigned.
* If str is NULL it crashes, as the native function does.
*
* DIFFERENCES
* This function does not read garbage behind '\0' as the native version does.
*/
NTSTATUS
NTAPI
RtlCharToInteger(
PCSZ str, /* [I] '\0' terminated single-byte string containing a number */
ULONG base, /* [I] Number base for conversion (allowed 0, 2, 8, 10 or 16) */
PULONG value) /* [O] Destination for the converted value */
{
CHAR chCurrent;
int digit;
ULONG RunningTotal = 0;
char bMinus = 0;
/* skip leading whitespaces */
while (*str != '\0' && *str <= ' ') str++;
/* Check for +/- */
if (*str == '+')
{
str++;
}
else if (*str == '-')
{
bMinus = 1;
str++;
}
/* base = 0 means autobase */
if (base == 0)
{
base = 10;
if (str[0] == '0')
{
if (str[1] == 'b')
{
str += 2;
base = 2;
}
else if (str[1] == 'o')
{
str += 2;
base = 8;
}
else if (str[1] == 'x')
{
str += 2;
base = 16;
}
}
}
else if (base != 2 && base != 8 && base != 10 && base != 16)
{
return STATUS_INVALID_PARAMETER;
}
if (value == NULL) return STATUS_ACCESS_VIOLATION;
while (*str != '\0')
{
chCurrent = *str;
if (chCurrent >= '0' && chCurrent <= '9')
{
digit = chCurrent - '0';
}
else if (chCurrent >= 'A' && chCurrent <= 'Z')
{
digit = chCurrent - 'A' + 10;
}
else if (chCurrent >= 'a' && chCurrent <= 'z')
{
digit = chCurrent - 'a' + 10;
}
else
{
digit = -1;
}
if (digit < 0 || digit >= (int)base) break;
RunningTotal = RunningTotal * base + digit;
str++;
}
*value = bMinus ? (0 - RunningTotal) : RunningTotal;
return STATUS_SUCCESS;
}
/*
* @implemented
*/
LONG
NTAPI
RtlCompareString(
IN const STRING *s1,
IN const STRING *s2,
IN BOOLEAN CaseInsensitive)
{
unsigned int len;
LONG ret = 0;
LPCSTR p1, p2;
len = min(s1->Length, s2->Length);
p1 = s1->Buffer;
p2 = s2->Buffer;
if (CaseInsensitive)
{
while (!ret && len--)
ret = RtlUpperChar(*p1++) - RtlUpperChar(*p2++);
}
else
{
while (!ret && len--) ret = *p1++ - *p2++;
}
if (!ret) ret = s1->Length - s2->Length;
return ret;
}
/*
* @implemented
*
* RETURNS
* TRUE if strings are equal.
*/
BOOLEAN
NTAPI
RtlEqualString(
IN const STRING *s1,
IN const STRING *s2,
IN BOOLEAN CaseInsensitive)
{
if (s1->Length != s2->Length) return FALSE;
return !RtlCompareString(s1, s2, CaseInsensitive);
}
/*
* @implemented
*
* RETURNS
* TRUE if strings are equal.
*/
BOOLEAN
NTAPI
RtlEqualUnicodeString(
IN CONST UNICODE_STRING *s1,
IN CONST UNICODE_STRING *s2,
IN BOOLEAN CaseInsensitive)
{
if (s1->Length != s2->Length) return FALSE;
return !RtlCompareUnicodeString(s1, s2, CaseInsensitive );
}
/*
* @implemented
*/
VOID
NTAPI
RtlFreeAnsiString(IN PANSI_STRING AnsiString)
{
PAGED_CODE_RTL();
if (AnsiString->Buffer)
{
RtlpFreeStringMemory(AnsiString->Buffer, TAG_ASTR);
RtlZeroMemory(AnsiString, sizeof(ANSI_STRING));
}
}
/*
* @implemented
*/
VOID
NTAPI
RtlFreeOemString(IN POEM_STRING OemString)
{
PAGED_CODE_RTL();
if (OemString->Buffer) RtlpFreeStringMemory(OemString->Buffer, TAG_OSTR);
}
/*
* @implemented
*/
VOID
NTAPI
RtlFreeUnicodeString(IN PUNICODE_STRING UnicodeString)
{
PAGED_CODE_RTL();
if (UnicodeString->Buffer)
{
RtlpFreeStringMemory(UnicodeString->Buffer, TAG_USTR);
RtlZeroMemory(UnicodeString, sizeof(UNICODE_STRING));
}
}
/*
* @implemented
*
* NOTES
* Check the OEM string to match the Unicode string.
*
* Functions which convert Unicode strings to OEM strings will set a
* DefaultChar from the OEM codepage when the characters are unknown.
* So check it against the Unicode string and return false when the
* Unicode string does not contain a TransDefaultChar.
*/
BOOLEAN
NTAPI
RtlpDidUnicodeToOemWork(IN PCUNICODE_STRING UnicodeString,
IN POEM_STRING OemString)
{
ULONG i = 0;
if (NlsMbOemCodePageTag == FALSE)
{
/* single-byte code page */
/* Go through all characters of a string */
while (i < OemString->Length)
{
/* Check if it got translated into a default char,
* but source char wasn't a default char equivalent
*/
if ((OemString->Buffer[i] == NlsOemDefaultChar) &&
(UnicodeString->Buffer[i] != NlsUnicodeDefaultChar))
{
/* Yes, it means unmappable characters were found */
return FALSE;
}
/* Move to the next char */
i++;
}
/* All chars were translated successfuly */
return TRUE;
}
else
{
/* multibyte code page */
/* FIXME */
return TRUE;
}
}
/*
* @implemented
*/
BOOLEAN
NTAPI
RtlIsValidOemCharacter(IN PWCHAR Char)
{
WCHAR UnicodeChar;
WCHAR OemChar;
/* If multi-byte code page present */
if (NlsMbOemCodePageTag)
{
USHORT Offset;
OemChar = NlsUnicodeToMbOemTable[*Char];
/* If character has Lead Byte */
Offset = NlsOemLeadByteInfo[HIBYTE(OemChar)];
if (Offset)
{
/* Use DBCS table */
UnicodeChar = NlsOemLeadByteInfo[Offset + LOBYTE(OemChar)];
}
else
{
UnicodeChar = NlsOemToUnicodeTable[OemChar];
}
/* Upcase */
UnicodeChar = RtlpUpcaseUnicodeChar(UnicodeChar);
/* Receive OEM character from the table */
OemChar = NlsUnicodeToMbOemTable[UnicodeChar];
}
else
{
/* Receive Unicode character from the table */
UnicodeChar = RtlpUpcaseUnicodeChar(NlsOemToUnicodeTable[(UCHAR)NlsUnicodeToOemTable[*Char]]);
/* Receive OEM character from the table */
OemChar = NlsUnicodeToOemTable[UnicodeChar];
}
/* Not valid character, failed */
if (OemChar == NlsOemDefaultChar)
{
DPRINT1("\\u%04x is not valid for OEM\n", *Char);
return FALSE;
}
*Char = UnicodeChar;
return TRUE;
}
/*
* @implemented
*
* NOTES
* If source is NULL the length of source is assumed to be 0.
*/
VOID
NTAPI
RtlInitAnsiString(IN OUT PANSI_STRING DestinationString,
IN PCSZ SourceString)
{
SIZE_T Size;
if (SourceString)
{
Size = strlen(SourceString);
if (Size > (MAXUSHORT - sizeof(CHAR))) Size = MAXUSHORT - sizeof(CHAR);
DestinationString->Length = (USHORT)Size;
DestinationString->MaximumLength = (USHORT)Size + sizeof(CHAR);
}
else
{
DestinationString->Length = 0;
DestinationString->MaximumLength = 0;
}
DestinationString->Buffer = (PCHAR)SourceString;
}
NTSTATUS
NTAPI
RtlInitAnsiStringEx(IN OUT PANSI_STRING DestinationString,
IN PCSZ SourceString)
{
SIZE_T Size;
if (SourceString)
{
Size = strlen(SourceString);
if (Size > (MAXUSHORT - sizeof(CHAR))) return STATUS_NAME_TOO_LONG;
DestinationString->Length = (USHORT)Size;
DestinationString->MaximumLength = (USHORT)Size + sizeof(CHAR);
}
else
{
DestinationString->Length = 0;
DestinationString->MaximumLength = 0;
}
DestinationString->Buffer = (PCHAR)SourceString;
return STATUS_SUCCESS;
}
/*
* @implemented
*
* NOTES
* If source is NULL the length of source is assumed to be 0.
*/
VOID
NTAPI
RtlInitString(
IN OUT PSTRING DestinationString,
IN PCSZ SourceString)
{
RtlInitAnsiString(DestinationString, SourceString);
}
/*
* @implemented
*
* NOTES
* If source is NULL the length of source is assumed to be 0.
*/
VOID
NTAPI
RtlInitUnicodeString(
IN OUT PUNICODE_STRING DestinationString,
IN PCWSTR SourceString)
{
SIZE_T Size;
CONST SIZE_T MaxSize = (MAXUSHORT & ~1) - sizeof(UNICODE_NULL); // an even number
if (SourceString)
{
Size = wcslen(SourceString) * sizeof(WCHAR);
__analysis_assume(Size <= MaxSize);
if (Size > MaxSize)
Size = MaxSize;
DestinationString->Length = (USHORT)Size;
DestinationString->MaximumLength = (USHORT)Size + sizeof(UNICODE_NULL);
}
else
{
DestinationString->Length = 0;
DestinationString->MaximumLength = 0;
}
DestinationString->Buffer = (PWCHAR)SourceString;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlInitUnicodeStringEx(
OUT PUNICODE_STRING DestinationString,
IN PCWSTR SourceString)
{
SIZE_T Size;
CONST SIZE_T MaxSize = (MAXUSHORT & ~1) - sizeof(WCHAR); // an even number
if (SourceString)
{
Size = wcslen(SourceString) * sizeof(WCHAR);
if (Size > MaxSize) return STATUS_NAME_TOO_LONG;
DestinationString->Length = (USHORT)Size;
DestinationString->MaximumLength = (USHORT)Size + sizeof(WCHAR);
}
else
{
DestinationString->Length = 0;
DestinationString->MaximumLength = 0;
}
DestinationString->Buffer = (PWCHAR)SourceString;
return STATUS_SUCCESS;
}
/*
* @implemented
*
* NOTES
* Writes at most length characters to the string str.
* Str is nullterminated when length allowes it.
* When str fits exactly in length characters the nullterm is ommitted.
*/
NTSTATUS NTAPI RtlIntegerToChar(
ULONG value, /* [I] Value to be converted */
ULONG base, /* [I] Number base for conversion (allowed 0, 2, 8, 10 or 16) */
ULONG length, /* [I] Length of the str buffer in bytes */
PCHAR str) /* [O] Destination for the converted value */
{
CHAR buffer[33];
PCHAR pos;
CHAR digit;
SIZE_T len;
if (base == 0)
{
base = 10;
}
else if (base != 2 && base != 8 && base != 10 && base != 16)
{
return STATUS_INVALID_PARAMETER;
}
pos = &buffer[32];
*pos = '\0';
do
{
pos--;
digit = (CHAR)(value % base);
value = value / base;
if (digit < 10)
{
*pos = '0' + digit;
}
else
{
*pos = 'A' + digit - 10;
}
}
while (value != 0L);
len = &buffer[32] - pos;
if (len > length)
{
return STATUS_BUFFER_OVERFLOW;
}
else if (str == NULL)
{
return STATUS_ACCESS_VIOLATION;
}
else if (len == length)
{
RtlCopyMemory(str, pos, len);
}
else
{
RtlCopyMemory(str, pos, len + 1);
}
return STATUS_SUCCESS;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlIntegerToUnicode(
IN ULONG Value,
IN ULONG Base OPTIONAL,
IN ULONG Length OPTIONAL,
IN OUT LPWSTR String)
{
ULONG Radix;
WCHAR temp[33];
ULONG v = Value;
ULONG i;
PWCHAR tp;
PWCHAR sp;
Radix = Base;
if (Radix == 0) Radix = 10;
if ((Radix != 2) && (Radix != 8) &&
(Radix != 10) && (Radix != 16))
{
return STATUS_INVALID_PARAMETER;
}
tp = temp;
while (v || tp == temp)
{
i = v % Radix;
v = v / Radix;
if (i < 10) *tp = (WCHAR)(i + L'0');
else *tp = (WCHAR)(i + L'a' - 10);
tp++;
}
if ((ULONG)((ULONG_PTR)tp - (ULONG_PTR)temp) >= Length)
{
return STATUS_BUFFER_TOO_SMALL;
}
sp = String;
while (tp > temp) *sp++ = *--tp;
*sp = 0;
return STATUS_SUCCESS;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlIntegerToUnicodeString(
IN ULONG Value,
IN ULONG Base OPTIONAL,
IN OUT PUNICODE_STRING String)
{
ANSI_STRING AnsiString;
CHAR Buffer[33];
NTSTATUS Status;
Status = RtlIntegerToChar(Value, Base, sizeof(Buffer), Buffer);
if (NT_SUCCESS(Status))
{
AnsiString.Buffer = Buffer;
AnsiString.Length = (USHORT)strlen(Buffer);
AnsiString.MaximumLength = sizeof(Buffer);
Status = RtlAnsiStringToUnicodeString(String, &AnsiString, FALSE);
}
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlInt64ToUnicodeString (
IN ULONGLONG Value,
IN ULONG Base OPTIONAL,
IN OUT PUNICODE_STRING String)
{
LARGE_INTEGER LargeInt;
ANSI_STRING AnsiString;
CHAR Buffer[65];
NTSTATUS Status;
LargeInt.QuadPart = Value;
Status = RtlLargeIntegerToChar(&LargeInt, Base, sizeof(Buffer), Buffer);
if (NT_SUCCESS(Status))
{
AnsiString.Buffer = Buffer;
AnsiString.Length = (USHORT)strlen(Buffer);
AnsiString.MaximumLength = sizeof(Buffer);
Status = RtlAnsiStringToUnicodeString(String, &AnsiString, FALSE);
}
return Status;
}
/*
* @implemented
*
* RETURNS
* TRUE if String2 contains String1 as a prefix.
*/
BOOLEAN
NTAPI
RtlPrefixString(
const STRING *String1,
const STRING *String2,
BOOLEAN CaseInsensitive)
{
PCHAR pc1;
PCHAR pc2;
ULONG NumChars;
if (String2->Length < String1->Length)
return FALSE;
NumChars = String1->Length;
pc1 = String1->Buffer;
pc2 = String2->Buffer;
if (pc1 && pc2)
{
if (CaseInsensitive)
{
while (NumChars--)
{
if (RtlUpperChar(*pc1++) != RtlUpperChar(*pc2++))
return FALSE;
}
}
else
{
while (NumChars--)
{
if (*pc1++ != *pc2++)
return FALSE;
}
}
return TRUE;
}
return FALSE;
}
/*
* @implemented
*
* RETURNS
* TRUE if String2 contains String1 as a prefix.
*/
BOOLEAN
NTAPI
RtlPrefixUnicodeString(
PCUNICODE_STRING String1,
PCUNICODE_STRING String2,
BOOLEAN CaseInsensitive)
{
PWCHAR pc1;
PWCHAR pc2;
ULONG NumChars;
if (String2->Length < String1->Length)
return FALSE;
NumChars = String1->Length / sizeof(WCHAR);
pc1 = String1->Buffer;
pc2 = String2->Buffer;
if (pc1 && pc2)
{
if (CaseInsensitive)
{
while (NumChars--)
{
if (RtlpUpcaseUnicodeChar(*pc1++) !=
RtlpUpcaseUnicodeChar(*pc2++))
return FALSE;
}
}
else
{
while (NumChars--)
{
if (*pc1++ != *pc2++)
return FALSE;
}
}
return TRUE;
}
return FALSE;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlUnicodeStringToInteger(
const UNICODE_STRING *str, /* [I] Unicode string to be converted */
ULONG base, /* [I] Number base for conversion (allowed 0, 2, 8, 10 or 16) */
ULONG *value) /* [O] Destination for the converted value */
{
LPWSTR lpwstr = str->Buffer;
USHORT CharsRemaining = str->Length / sizeof(WCHAR);
WCHAR wchCurrent;
int digit;
ULONG RunningTotal = 0;
char bMinus = 0;
while (CharsRemaining >= 1 && *lpwstr <= ' ')
{
lpwstr++;
CharsRemaining--;
}
if (CharsRemaining >= 1)
{
if (*lpwstr == '+')
{
lpwstr++;
CharsRemaining--;
}
else if (*lpwstr == '-')
{
bMinus = 1;
lpwstr++;
CharsRemaining--;
}
}
if (base == 0)
{
base = 10;
if (CharsRemaining >= 2 && lpwstr[0] == '0')
{
if (lpwstr[1] == 'b')
{
lpwstr += 2;
CharsRemaining -= 2;
base = 2;
}
else if (lpwstr[1] == 'o')
{
lpwstr += 2;
CharsRemaining -= 2;
base = 8;
}
else if (lpwstr[1] == 'x')
{
lpwstr += 2;
CharsRemaining -= 2;
base = 16;
}
}
}
else if (base != 2 && base != 8 && base != 10 && base != 16)
{
return STATUS_INVALID_PARAMETER;
}
if (value == NULL)
{
return STATUS_ACCESS_VIOLATION;
}
while (CharsRemaining >= 1)
{
wchCurrent = *lpwstr;
if (wchCurrent >= '0' && wchCurrent <= '9')
{
digit = wchCurrent - '0';
}
else if (wchCurrent >= 'A' && wchCurrent <= 'Z')
{
digit = wchCurrent - 'A' + 10;
}
else if (wchCurrent >= 'a' && wchCurrent <= 'z')
{
digit = wchCurrent - 'a' + 10;
}
else
{
digit = -1;
}
if (digit < 0 || (ULONG)digit >= base) break;
RunningTotal = RunningTotal * base + digit;
lpwstr++;
CharsRemaining--;
}
*value = bMinus ? (0 - RunningTotal) : RunningTotal;
return STATUS_SUCCESS;
}
/*
* @implemented
*
* RETURNS
* Bytes necessary for the conversion including nullterm.
*/
ULONG
NTAPI
RtlxUnicodeStringToOemSize(IN PCUNICODE_STRING UnicodeString)
{
ULONG Size;
/* Convert the Unicode String to Mb Size */
RtlUnicodeToMultiByteSize(&Size,
UnicodeString->Buffer,
UnicodeString->Length);
/* Return the size + the null char */
return (Size + sizeof(CHAR));
}
/*
* @implemented
*
* NOTES
* This function always writes a terminating '\0'.
* It performs a partial copy if ansi is too small.
*/
NTSTATUS
NTAPI
RtlUnicodeStringToAnsiString(
IN OUT PANSI_STRING AnsiDest,
IN PCUNICODE_STRING UniSource,
IN BOOLEAN AllocateDestinationString)
{
NTSTATUS Status = STATUS_SUCCESS;
NTSTATUS RealStatus;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
ASSERT(!(UniSource->Length & 1));
if (NlsMbCodePageTag == FALSE)
{
Length = (UniSource->Length + sizeof(WCHAR)) / sizeof(WCHAR);
}
else
{
Length = RtlxUnicodeStringToAnsiSize(UniSource);
}
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
AnsiDest->Length = (USHORT)Length - sizeof(CHAR);
if (AllocateDestinationString)
{
AnsiDest->Buffer = RtlpAllocateStringMemory(Length, TAG_ASTR);
AnsiDest->MaximumLength = (USHORT)Length;
if (!AnsiDest->Buffer) return STATUS_NO_MEMORY;
}
else if (AnsiDest->Length >= AnsiDest->MaximumLength)
{
if (!AnsiDest->MaximumLength) return STATUS_BUFFER_OVERFLOW;
Status = STATUS_BUFFER_OVERFLOW;
AnsiDest->Length = AnsiDest->MaximumLength - 1;
}
RealStatus = RtlUnicodeToMultiByteN(AnsiDest->Buffer,
AnsiDest->Length,
&Index,
UniSource->Buffer,
UniSource->Length);
if (!NT_SUCCESS(RealStatus) && AllocateDestinationString)
{
RtlpFreeStringMemory(AnsiDest->Buffer, TAG_ASTR);
return RealStatus;
}
AnsiDest->Buffer[Index] = ANSI_NULL;
return Status;
}
/*
* @implemented
*
* NOTES
* This function always writes a terminating '\0'.
* Does NOT perform a partial copy if unicode is too small!
*/
NTSTATUS
NTAPI
RtlOemStringToUnicodeString(
IN OUT PUNICODE_STRING UniDest,
IN PCOEM_STRING OemSource,
IN BOOLEAN AllocateDestinationString)
{
NTSTATUS Status;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
Length = RtlOemStringToUnicodeSize(OemSource);
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
UniDest->Length = (USHORT)Length - sizeof(WCHAR);
if (AllocateDestinationString)
{
UniDest->Buffer = RtlpAllocateStringMemory(Length, TAG_USTR);
UniDest->MaximumLength = (USHORT)Length;
if (!UniDest->Buffer) return STATUS_NO_MEMORY;
}
else if (UniDest->Length >= UniDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
Status = RtlOemToUnicodeN(UniDest->Buffer,
UniDest->Length,
&Index,
OemSource->Buffer,
OemSource->Length);
if (!NT_SUCCESS(Status) && AllocateDestinationString)
{
RtlpFreeStringMemory(UniDest->Buffer, TAG_USTR);
UniDest->Buffer = NULL;
return Status;
}
UniDest->Buffer[Index / sizeof(WCHAR)] = UNICODE_NULL;
return Status;
}
/*
* @implemented
*
* NOTES
* This function always '\0' terminates the string returned.
*/
NTSTATUS
NTAPI
RtlUnicodeStringToOemString(
IN OUT POEM_STRING OemDest,
IN PCUNICODE_STRING UniSource,
IN BOOLEAN AllocateDestinationString)
{
NTSTATUS Status;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
Length = RtlUnicodeStringToOemSize(UniSource);
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
OemDest->Length = (USHORT)Length - sizeof(CHAR);
if (AllocateDestinationString)
{
OemDest->Buffer = RtlpAllocateStringMemory(Length, TAG_OSTR);
OemDest->MaximumLength = (USHORT)Length;
if (!OemDest->Buffer) return STATUS_NO_MEMORY;
}
else if (OemDest->Length >= OemDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
Status = RtlUnicodeToOemN(OemDest->Buffer,
OemDest->Length,
&Index,
UniSource->Buffer,
UniSource->Length);
if (!NT_SUCCESS(Status) && AllocateDestinationString)
{
RtlpFreeStringMemory(OemDest->Buffer, TAG_OSTR);
OemDest->Buffer = NULL;
return Status;
}
OemDest->Buffer[Index] = ANSI_NULL;
return Status;
}
#define ITU_IMPLEMENTED_TESTS (IS_TEXT_UNICODE_ODD_LENGTH|IS_TEXT_UNICODE_SIGNATURE)
/*
* @implemented
*
* RETURNS
* The length of the string if all tests were passed, 0 otherwise.
*/
BOOLEAN
NTAPI
RtlIsTextUnicode(CONST VOID* buf, INT len, INT* pf)
{
static const WCHAR std_control_chars[] = {'\r', '\n', '\t', ' ', 0x3000, 0};
static const WCHAR byterev_control_chars[] = {0x0d00, 0x0a00, 0x0900, 0x2000, 0};
const WCHAR *s = buf;
int i;
unsigned int flags = MAXULONG, out_flags = 0;
UCHAR last_lo_byte = 0;
UCHAR last_hi_byte = 0;
ULONG hi_byte_diff = 0;
ULONG lo_byte_diff = 0;
ULONG weight = 3;
ULONG lead_byte = 0;
if (len < sizeof(WCHAR))
{
/* FIXME: MSDN documents IS_TEXT_UNICODE_BUFFER_TOO_SMALL but there is no such thing... */
if (pf) *pf = 0;
return FALSE;
}
if (pf)
flags = *pf;
/*
* Apply various tests to the text string. According to the
* docs, each test "passed" sets the corresponding flag in
* the output flags. But some of the tests are mutually
* exclusive, so I don't see how you could pass all tests ...
*/
/* Check for an odd length ... pass if even. */
if (len & 1) out_flags |= IS_TEXT_UNICODE_ODD_LENGTH;
if (((char *)buf)[len - 1] == 0)
len--; /* Windows seems to do something like that to avoid e.g. false IS_TEXT_UNICODE_NULL_BYTES */
len /= sizeof(WCHAR);
/* Windows only checks the first 256 characters */
if (len > 256) len = 256;
/* Check for the special byte order unicode marks. */
if (*s == 0xFEFF) out_flags |= IS_TEXT_UNICODE_SIGNATURE;
if (*s == 0xFFFE) out_flags |= IS_TEXT_UNICODE_REVERSE_SIGNATURE;
for (i = 0; i < len; i++)
{
UCHAR lo_byte = LOBYTE(s[i]);
UCHAR hi_byte = HIBYTE(s[i]);
lo_byte_diff += max(lo_byte, last_lo_byte) - min(lo_byte, last_lo_byte);
hi_byte_diff += max(hi_byte, last_hi_byte) - min(hi_byte, last_hi_byte);
last_lo_byte = lo_byte;
last_hi_byte = hi_byte;
switch (s[i])
{
case 0xFFFE: /* Reverse BOM */
case UNICODE_NULL:
case 0x0A0D: /* ASCII CRLF (packed into one word) */
case 0xFFFF: /* Unicode 0xFFFF */
out_flags |= IS_TEXT_UNICODE_ILLEGAL_CHARS;
break;
}
}
if (NlsMbCodePageTag && pf && (*pf & IS_TEXT_UNICODE_DBCS_LEADBYTE))
{
for (i = 0; i < len; i++)
{
if (NlsLeadByteInfo[s[i]])
{
++lead_byte;
++i;
}
}
if (lead_byte)
{
weight = (len / 2) - 1;
if (lead_byte < (weight / 3))
weight = 3;
else if (lead_byte < ((weight * 2) / 3))
weight = 2;
else
weight = 1;
out_flags |= IS_TEXT_UNICODE_DBCS_LEADBYTE;
}
}
if (lo_byte_diff < 127 && !hi_byte_diff)
{
out_flags |= IS_TEXT_UNICODE_ASCII16;
}
if (hi_byte_diff && !lo_byte_diff)
{
out_flags |= IS_TEXT_UNICODE_REVERSE_ASCII16;
}
if ((weight * lo_byte_diff) < hi_byte_diff)
{
out_flags |= IS_TEXT_UNICODE_REVERSE_STATISTICS;
}
/* apply some statistical analysis */
if ((flags & IS_TEXT_UNICODE_STATISTICS) &&
((weight * hi_byte_diff) < lo_byte_diff))
{
out_flags |= IS_TEXT_UNICODE_STATISTICS;
}
/* Check for unicode NULL chars */
if (flags & IS_TEXT_UNICODE_NULL_BYTES)
{
for (i = 0; i < len; i++)
{
if (!(s[i] & 0xff) || !(s[i] >> 8))
{
out_flags |= IS_TEXT_UNICODE_NULL_BYTES;
break;
}
}
}
if (flags & IS_TEXT_UNICODE_CONTROLS)
{
for (i = 0; i < len; i++)
{
if (strchrW(std_control_chars, s[i]))
{
out_flags |= IS_TEXT_UNICODE_CONTROLS;
break;
}
}
}
if (flags & IS_TEXT_UNICODE_REVERSE_CONTROLS)
{
for (i = 0; i < len; i++)
{
if (strchrW(byterev_control_chars, s[i]))
{
out_flags |= IS_TEXT_UNICODE_REVERSE_CONTROLS;
break;
}
}
}
if (pf)
{
out_flags &= *pf;
*pf = out_flags;
}
/* check for flags that indicate it's definitely not valid Unicode */
if (out_flags & (IS_TEXT_UNICODE_REVERSE_MASK | IS_TEXT_UNICODE_NOT_UNICODE_MASK)) return FALSE;
/* now check for invalid ASCII, and assume Unicode if so */
if (out_flags & IS_TEXT_UNICODE_NOT_ASCII_MASK) return TRUE;
/* now check for Unicode flags */
if (out_flags & IS_TEXT_UNICODE_UNICODE_MASK) return TRUE;
/* no flags set */
return FALSE;
}
/*
* @implemented
*
* NOTES
* Same as RtlOemStringToUnicodeString but doesn't write terminating null
* A partial copy is NOT performed if the dest buffer is too small!
*/
NTSTATUS
NTAPI
RtlOemStringToCountedUnicodeString(
IN OUT PUNICODE_STRING UniDest,
IN PCOEM_STRING OemSource,
IN BOOLEAN AllocateDestinationString)
{
NTSTATUS Status;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
/* Calculate size of the string */
Length = RtlOemStringToCountedUnicodeSize(OemSource);
/* If it's 0 then zero out dest string and return */
if (!Length)
{
RtlZeroMemory(UniDest, sizeof(UNICODE_STRING));
return STATUS_SUCCESS;
}
/* Check if length is a sane value */
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
/* Store it in dest string */
UniDest->Length = (USHORT)Length;
/* If we're asked to alloc the string - do so */
if (AllocateDestinationString)
{
UniDest->Buffer = RtlpAllocateStringMemory(Length, TAG_USTR);
UniDest->MaximumLength = (USHORT)Length;
if (!UniDest->Buffer) return STATUS_NO_MEMORY;
}
else if (UniDest->Length > UniDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
/* Do the conversion */
Status = RtlOemToUnicodeN(UniDest->Buffer,
UniDest->Length,
&Index,
OemSource->Buffer,
OemSource->Length);
if (!NT_SUCCESS(Status) && AllocateDestinationString)
{
/* Conversion failed, free dest string and return status code */
RtlpFreeStringMemory(UniDest->Buffer, TAG_USTR);
UniDest->Buffer = NULL;
return Status;
}
return STATUS_SUCCESS;
}
/*
* @implemented
*
* RETURNS
* TRUE if the names are equal, FALSE if not
*
* NOTES
* The comparison is case insensitive.
*/
BOOLEAN
NTAPI
RtlEqualComputerName(
IN PUNICODE_STRING ComputerName1,
IN PUNICODE_STRING ComputerName2)
{
OEM_STRING OemString1;
OEM_STRING OemString2;
BOOLEAN Result = FALSE;
if (NT_SUCCESS(RtlUpcaseUnicodeStringToOemString(&OemString1,
ComputerName1,
TRUE)))
{
if (NT_SUCCESS(RtlUpcaseUnicodeStringToOemString(&OemString2,
ComputerName2,
TRUE)))
{
Result = RtlEqualString(&OemString1, &OemString2, FALSE);
RtlFreeOemString(&OemString2);
}
RtlFreeOemString(&OemString1);
}
return Result;
}
/*
* @implemented
*
* RETURNS
* TRUE if the names are equal, FALSE if not
*
* NOTES
* The comparison is case insensitive.
*/
BOOLEAN
NTAPI
RtlEqualDomainName (
IN PUNICODE_STRING DomainName1,
IN PUNICODE_STRING DomainName2)
{
return RtlEqualComputerName(DomainName1, DomainName2);
}
/*
* @implemented
*
* RIPPED FROM WINE's ntdll\rtlstr.c rev 1.45
*
* Convert a string representation of a GUID into a GUID.
*
* PARAMS
* str [I] String representation in the format "{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}"
* guid [O] Destination for the converted GUID
*
* RETURNS
* Success: STATUS_SUCCESS. guid contains the converted value.
* Failure: STATUS_INVALID_PARAMETER, if str is not in the expected format.
*
* SEE ALSO
* See RtlStringFromGUID.
*/
NTSTATUS
NTAPI
RtlGUIDFromString(
IN UNICODE_STRING *str,
OUT GUID* guid)
{
int i = 0;
const WCHAR *lpszCLSID = str->Buffer;
BYTE* lpOut = (BYTE*)guid;
//TRACE("(%s,%p)\n", debugstr_us(str), guid);
/* Convert string: {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
* to memory: DWORD... WORD WORD BYTES............
*/
while (i <= 37)
{
switch (i)
{
case 0:
if (*lpszCLSID != '{')
return STATUS_INVALID_PARAMETER;
break;
case 9:
case 14:
case 19:
case 24:
if (*lpszCLSID != '-')
return STATUS_INVALID_PARAMETER;
break;
case 37:
if (*lpszCLSID != '}')
return STATUS_INVALID_PARAMETER;
break;
default:
{
WCHAR ch = *lpszCLSID, ch2 = lpszCLSID[1];
unsigned char byte;
/* Read two hex digits as a byte value */
if (ch >= '0' && ch <= '9')
ch = ch - '0';
else if (ch >= 'a' && ch <= 'f')
ch = ch - 'a' + 10;
else if (ch >= 'A' && ch <= 'F')
ch = ch - 'A' + 10;
else
return STATUS_INVALID_PARAMETER;
if (ch2 >= '0' && ch2 <= '9')
ch2 = ch2 - '0';
else if (ch2 >= 'a' && ch2 <= 'f')
ch2 = ch2 - 'a' + 10;
else if (ch2 >= 'A' && ch2 <= 'F')
ch2 = ch2 - 'A' + 10;
else
return STATUS_INVALID_PARAMETER;
byte = ch << 4 | ch2;
switch (i)
{
#ifndef WORDS_BIGENDIAN
/* For Big Endian machines, we store the data such that the
* dword/word members can be read as DWORDS and WORDS correctly. */
/* Dword */
case 1:
lpOut[3] = byte;
break;
case 3:
lpOut[2] = byte;
break;
case 5:
lpOut[1] = byte;
break;
case 7:
lpOut[0] = byte;
lpOut += 4;
break;
/* Word */
case 10:
case 15:
lpOut[1] = byte;
break;
case 12:
case 17:
lpOut[0] = byte;
lpOut += 2;
break;
#endif
/* Byte */
default:
lpOut[0] = byte;
lpOut++;
break;
}
lpszCLSID++; /* Skip 2nd character of byte */
i++;
}
}
lpszCLSID++;
i++;
}
return STATUS_SUCCESS;
}
/*
* @implemented
*/
VOID
NTAPI
RtlEraseUnicodeString(
IN PUNICODE_STRING String)
{
if (String->Buffer && String->MaximumLength)
{
RtlZeroMemory(String->Buffer, String->MaximumLength);
String->Length = 0;
}
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlHashUnicodeString(
IN CONST UNICODE_STRING *String,
IN BOOLEAN CaseInSensitive,
IN ULONG HashAlgorithm,
OUT PULONG HashValue)
{
if (String != NULL && HashValue != NULL)
{
switch (HashAlgorithm)
{
case HASH_STRING_ALGORITHM_DEFAULT:
case HASH_STRING_ALGORITHM_X65599:
{
WCHAR *c, *end;
*HashValue = 0;
end = String->Buffer + (String->Length / sizeof(WCHAR));
if (CaseInSensitive)
{
for (c = String->Buffer; c != end; c++)
{
/* only uppercase characters if they are 'a' ... 'z'! */
*HashValue = ((65599 * (*HashValue)) +
(ULONG)(((*c) >= L'a' && (*c) <= L'z') ?
(*c) - L'a' + L'A' : (*c)));
}
}
else
{
for (c = String->Buffer; c != end; c++)
{
*HashValue = ((65599 * (*HashValue)) + (ULONG)(*c));
}
}
return STATUS_SUCCESS;
}
}
}
return STATUS_INVALID_PARAMETER;
}
/*
* @implemented
*
* NOTES
* Same as RtlUnicodeStringToOemString but doesn't write terminating null
*/
_IRQL_requires_max_(PASSIVE_LEVEL)
_Must_inspect_result_
NTSYSAPI
NTSTATUS
NTAPI
RtlUnicodeStringToCountedOemString(
_When_(AllocateDestinationString, _Out_ _At_(DestinationString->Buffer, __drv_allocatesMem(Mem)))
_When_(!AllocateDestinationString, _Inout_)
POEM_STRING OemDest,
_In_ PCUNICODE_STRING UniSource,
_In_ BOOLEAN AllocateDestinationString)
{
NTSTATUS Status;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
/* Calculate size of the string */
Length = RtlUnicodeStringToCountedOemSize(UniSource);
/* If it's 0 then zero out dest string and return */
if (!Length)
{
RtlZeroMemory(OemDest, sizeof(OEM_STRING));
return STATUS_SUCCESS;
}
/* Check if length is a sane value */
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
/* Store it in dest string */
OemDest->Length = (USHORT)Length;
/* If we're asked to alloc the string - do so */
if (AllocateDestinationString)
{
OemDest->Buffer = RtlpAllocateStringMemory(Length, TAG_OSTR);
OemDest->MaximumLength = (USHORT)Length;
if (!OemDest->Buffer) return STATUS_NO_MEMORY;
}
else if (OemDest->Length > OemDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
/* Do the conversion */
Status = RtlUnicodeToOemN(OemDest->Buffer,
OemDest->Length,
&Index,
UniSource->Buffer,
UniSource->Length);
/* Check for unmapped character */
if (NT_SUCCESS(Status) && !RtlpDidUnicodeToOemWork(UniSource, OemDest))
Status = STATUS_UNMAPPABLE_CHARACTER;
if (!NT_SUCCESS(Status) && AllocateDestinationString)
{
/* Conversion failed, free dest string and return status code */
RtlpFreeStringMemory(OemDest->Buffer, TAG_OSTR);
OemDest->Buffer = NULL;
return Status;
}
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlLargeIntegerToChar(
IN PLARGE_INTEGER Value,
IN ULONG Base,
IN ULONG Length,
IN OUT PCHAR String)
{
ULONGLONG Val = Value->QuadPart;
CHAR Buffer[65];
CHAR Digit;
SIZE_T Len;
PCHAR Pos;
if (Base == 0) Base = 10;
if ((Base != 2) && (Base != 8) && (Base != 10) && (Base != 16))
{
return STATUS_INVALID_PARAMETER;
}
Pos = &Buffer[64];
*Pos = '\0';
do
{
Pos--;
Digit = (CHAR)(Val % Base);
Val = Val / Base;
if (Digit < 10)
*Pos = '0' + Digit;
else
*Pos = 'A' + Digit - 10;
}
while (Val != 0L);
Len = &Buffer[64] - Pos;
if (Len > Length)
return STATUS_BUFFER_OVERFLOW;
/* If possible, add the 0 termination */
if (Len < Length)
Len += 1;
/* Copy the string to the target using SEH */
return RtlpSafeCopyMemory(String, Pos, Len);
}
/*
* @implemented
*
* NOTES
* dest is never '\0' terminated because it may be equal to src, and src
* might not be '\0' terminated. dest->Length is only set upon success.
*/
NTSTATUS
NTAPI
RtlUpcaseUnicodeString(
IN OUT PUNICODE_STRING UniDest,
IN PCUNICODE_STRING UniSource,
IN BOOLEAN AllocateDestinationString)
{
ULONG i, j;
PAGED_CODE_RTL();
if (AllocateDestinationString)
{
UniDest->MaximumLength = UniSource->Length;
UniDest->Buffer = RtlpAllocateStringMemory(UniDest->MaximumLength, TAG_USTR);
if (UniDest->Buffer == NULL) return STATUS_NO_MEMORY;
}
else if (UniSource->Length > UniDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
j = UniSource->Length / sizeof(WCHAR);
for (i = 0; i < j; i++)
{
UniDest->Buffer[i] = RtlpUpcaseUnicodeChar(UniSource->Buffer[i]);
}
UniDest->Length = UniSource->Length;
return STATUS_SUCCESS;
}
/*
* @implemented
*
* NOTES
* This function always writes a terminating '\0'.
* It performs a partial copy if ansi is too small.
*/
NTSTATUS
NTAPI
RtlUpcaseUnicodeStringToAnsiString(
IN OUT PANSI_STRING AnsiDest,
IN PCUNICODE_STRING UniSource,
IN BOOLEAN AllocateDestinationString)
{
NTSTATUS Status;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
Length = RtlUnicodeStringToAnsiSize(UniSource);
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
AnsiDest->Length = (USHORT)Length - sizeof(CHAR);
if (AllocateDestinationString)
{
AnsiDest->Buffer = RtlpAllocateStringMemory(Length, TAG_ASTR);
AnsiDest->MaximumLength = (USHORT)Length;
if (!AnsiDest->Buffer) return STATUS_NO_MEMORY;
}
else if (AnsiDest->Length >= AnsiDest->MaximumLength)
{
if (!AnsiDest->MaximumLength) return STATUS_BUFFER_OVERFLOW;
}
Status = RtlUpcaseUnicodeToMultiByteN(AnsiDest->Buffer,
AnsiDest->Length,
&Index,
UniSource->Buffer,
UniSource->Length);
if (!NT_SUCCESS(Status) && AllocateDestinationString)
{
RtlpFreeStringMemory(AnsiDest->Buffer, TAG_ASTR);
AnsiDest->Buffer = NULL;
return Status;
}
AnsiDest->Buffer[Index] = ANSI_NULL;
return Status;
}
/*
* @implemented
*
* NOTES
* This function always writes a terminating '\0'.
* It performs a partial copy if ansi is too small.
*/
NTSTATUS
NTAPI
RtlUpcaseUnicodeStringToCountedOemString(
IN OUT POEM_STRING OemDest,
IN PCUNICODE_STRING UniSource,
IN BOOLEAN AllocateDestinationString)
{
NTSTATUS Status;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
Length = RtlUnicodeStringToCountedOemSize(UniSource);
if (!Length)
{
RtlZeroMemory(OemDest, sizeof(OEM_STRING));
}
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
OemDest->Length = (USHORT)Length;
if (AllocateDestinationString)
{
OemDest->Buffer = RtlpAllocateStringMemory(Length, TAG_OSTR);
OemDest->MaximumLength = (USHORT)Length;
if (!OemDest->Buffer) return STATUS_NO_MEMORY;
}
else if (OemDest->Length > OemDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
Status = RtlUpcaseUnicodeToOemN(OemDest->Buffer,
OemDest->Length,
&Index,
UniSource->Buffer,
UniSource->Length);
/* Check for unmapped characters */
if (NT_SUCCESS(Status) && !RtlpDidUnicodeToOemWork(UniSource, OemDest))
Status = STATUS_UNMAPPABLE_CHARACTER;
if (!NT_SUCCESS(Status) && AllocateDestinationString)
{
RtlpFreeStringMemory(OemDest->Buffer, TAG_OSTR);
OemDest->Buffer = NULL;
return Status;
}
return Status;
}
/*
* @implemented
* NOTES
* OEM string is always nullterminated
* It performs a partial copy if oem is too small.
*/
NTSTATUS
NTAPI
RtlUpcaseUnicodeStringToOemString (
IN OUT POEM_STRING OemDest,
IN PCUNICODE_STRING UniSource,
IN BOOLEAN AllocateDestinationString)
{
NTSTATUS Status;
ULONG Length;
ULONG Index;
PAGED_CODE_RTL();
Length = RtlUnicodeStringToOemSize(UniSource);
if (Length > MAXUSHORT) return STATUS_INVALID_PARAMETER_2;
OemDest->Length = (USHORT)Length - sizeof(CHAR);
if (AllocateDestinationString)
{
OemDest->Buffer = RtlpAllocateStringMemory(Length, TAG_OSTR);
OemDest->MaximumLength = (USHORT)Length;
if (!OemDest->Buffer) return STATUS_NO_MEMORY;
}
else if (OemDest->Length >= OemDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
Status = RtlUpcaseUnicodeToOemN(OemDest->Buffer,
OemDest->Length,
&Index,
UniSource->Buffer,
UniSource->Length);
/* Check for unmapped characters */
if (NT_SUCCESS(Status) && !RtlpDidUnicodeToOemWork(UniSource, OemDest))
Status = STATUS_UNMAPPABLE_CHARACTER;
if (!NT_SUCCESS(Status) && AllocateDestinationString)
{
RtlpFreeStringMemory(OemDest->Buffer, TAG_OSTR);
OemDest->Buffer = NULL;
return Status;
}
OemDest->Buffer[Index] = ANSI_NULL;
return Status;
}
/*
* @implemented
*
* RETURNS
* Bytes calculated including nullterm
*/
ULONG
NTAPI
RtlxOemStringToUnicodeSize(IN PCOEM_STRING OemString)
{
ULONG Size;
/* Convert the Mb String to Unicode Size */
RtlMultiByteToUnicodeSize(&Size,
OemString->Buffer,
OemString->Length);
/* Return the size + null-char */
return (Size + sizeof(WCHAR));
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlStringFromGUID (IN REFGUID Guid,
OUT PUNICODE_STRING GuidString)
{
/* Setup the string */
GuidString->Length = 38 * sizeof(WCHAR);
GuidString->MaximumLength = GuidString->Length + sizeof(UNICODE_NULL);
GuidString->Buffer = RtlpAllocateStringMemory(GuidString->MaximumLength,
TAG_USTR);
if (!GuidString->Buffer) return STATUS_NO_MEMORY;
/* Now format the GUID */
swprintf(GuidString->Buffer,
L"{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
Guid->Data1,
Guid->Data2,
Guid->Data3,
Guid->Data4[0],
Guid->Data4[1],
Guid->Data4[2],
Guid->Data4[3],
Guid->Data4[4],
Guid->Data4[5],
Guid->Data4[6],
Guid->Data4[7]);
return STATUS_SUCCESS;
}
/*
* @implemented
*
* RETURNS
* Bytes calculated including nullterm
*/
ULONG
NTAPI
RtlxUnicodeStringToAnsiSize(IN PCUNICODE_STRING UnicodeString)
{
ULONG Size;
PAGED_CODE_RTL();
ASSERT(!(UnicodeString->Length & 1));
/* Convert the Unicode String to Mb Size */
RtlUnicodeToMultiByteSize(&Size,
UnicodeString->Buffer,
UnicodeString->Length);
/* Return the size + null-char */
return (Size + sizeof(CHAR));
}
/*
* @implemented
*/
LONG
NTAPI
RtlCompareUnicodeString(
IN PCUNICODE_STRING s1,
IN PCUNICODE_STRING s2,
IN BOOLEAN CaseInsensitive)
{
unsigned int len;
LONG ret = 0;
LPCWSTR p1, p2;
len = min(s1->Length, s2->Length) / sizeof(WCHAR);
p1 = s1->Buffer;
p2 = s2->Buffer;
if (CaseInsensitive)
{
while (!ret && len--) ret = RtlpUpcaseUnicodeChar(*p1++) - RtlpUpcaseUnicodeChar(*p2++);
}
else
{
while (!ret && len--) ret = *p1++ - *p2++;
}
if (!ret) ret = s1->Length - s2->Length;
return ret;
}
/*
* @implemented
*/
_IRQL_requires_max_(PASSIVE_LEVEL)
_Must_inspect_result_
NTSYSAPI
LONG
NTAPI
RtlCompareUnicodeStrings(
_In_reads_(String1Length) PCWCH String1,
_In_ SIZE_T String1Length,
_In_reads_(String2Length) PCWCH String2,
_In_ SIZE_T String2Length,
_In_ BOOLEAN CaseInSensitive)
{
LONG Result = 0;
SIZE_T MinStringLength = min(String1Length, String2Length);
SIZE_T Index;
if (CaseInSensitive)
{
for (Index = 0; Index < MinStringLength; Index++)
{
WCHAR Char1 = RtlpUpcaseUnicodeChar(String1[Index]);
WCHAR Char2 = RtlpUpcaseUnicodeChar(String2[Index]);
Result = Char1 - Char2;
if (Result != 0)
{
return Result;
}
}
}
else
{
for (Index = 0; Index < MinStringLength; Index++)
{
Result = String1[Index] - String2[Index];
if (Result != 0)
{
return Result;
}
}
}
return String1Length - String2Length;
}
/*
* @implemented
*/
VOID
NTAPI
RtlCopyString(
IN OUT PSTRING DestinationString,
IN const STRING *SourceString OPTIONAL)
{
ULONG SourceLength;
PCHAR p1, p2;
/* Check if there was no source given */
if (!SourceString)
{
/* Simply return an empty string */
DestinationString->Length = 0;
}
else
{
/* Choose the smallest length */
SourceLength = min(DestinationString->MaximumLength,
SourceString->Length);
/* Set it */
DestinationString->Length = (USHORT)SourceLength;
/* Save the pointers to each buffer */
p1 = DestinationString->Buffer;
p2 = SourceString->Buffer;
/* Loop the buffer */
while (SourceLength)
{
/* Copy the character and move on */
*p1++ = * p2++;
SourceLength--;
}
}
}
/*
* @implemented
*/
VOID
NTAPI
RtlCopyUnicodeString(
IN OUT PUNICODE_STRING DestinationString,
IN PCUNICODE_STRING SourceString)
{
ULONG SourceLength;
if (!SourceString)
{
DestinationString->Length = 0;
}
else
{
SourceLength = min(DestinationString->MaximumLength,
SourceString->Length);
DestinationString->Length = (USHORT)SourceLength;
RtlCopyMemory(DestinationString->Buffer,
SourceString->Buffer,
SourceLength);
if (DestinationString->Length < DestinationString->MaximumLength)
{
DestinationString->Buffer[SourceLength / sizeof(WCHAR)] = UNICODE_NULL;
}
}
}
/*
* @implemented
*
* NOTES
* Creates a nullterminated UNICODE_STRING
*/
BOOLEAN
NTAPI
RtlCreateUnicodeString(
IN OUT PUNICODE_STRING UniDest,
IN PCWSTR Source)
{
SIZE_T Size;
PAGED_CODE_RTL();
Size = (wcslen(Source) + 1) * sizeof(WCHAR);
if (Size > MAXUSHORT) return FALSE;
UniDest->Buffer = RtlpAllocateStringMemory((ULONG)Size, TAG_USTR);
if (UniDest->Buffer == NULL) return FALSE;
RtlCopyMemory(UniDest->Buffer, Source, Size);
UniDest->MaximumLength = (USHORT)Size;
UniDest->Length = (USHORT)Size - sizeof (WCHAR);
return TRUE;
}
/*
* @implemented
*/
BOOLEAN
NTAPI
RtlCreateUnicodeStringFromAsciiz(
OUT PUNICODE_STRING Destination,
IN PCSZ Source)
{
ANSI_STRING AnsiString;
NTSTATUS Status;
RtlInitAnsiString(&AnsiString, Source);
Status = RtlAnsiStringToUnicodeString(Destination,
&AnsiString,
TRUE);
return NT_SUCCESS(Status);
}
/*
* @implemented
*
* NOTES
* Dest is never '\0' terminated because it may be equal to src, and src
* might not be '\0' terminated.
* Dest->Length is only set upon success.
*/
NTSTATUS
NTAPI
RtlDowncaseUnicodeString(
IN OUT PUNICODE_STRING UniDest,
IN PCUNICODE_STRING UniSource,
IN BOOLEAN AllocateDestinationString)
{
ULONG i;
ULONG StopGap;
PAGED_CODE_RTL();
if (AllocateDestinationString)
{
UniDest->MaximumLength = UniSource->Length;
UniDest->Buffer = RtlpAllocateStringMemory(UniSource->Length, TAG_USTR);
if (UniDest->Buffer == NULL) return STATUS_NO_MEMORY;
}
else if (UniSource->Length > UniDest->MaximumLength)
{
return STATUS_BUFFER_OVERFLOW;
}
UniDest->Length = UniSource->Length;
StopGap = UniSource->Length / sizeof(WCHAR);
for (i = 0 ; i < StopGap; i++)
{
if (UniSource->Buffer[i] < L'A')
{
UniDest->Buffer[i] = UniSource->Buffer[i];
}
else if (UniSource->Buffer[i] <= L'Z')
{
UniDest->Buffer[i] = (UniSource->Buffer[i] + (L'a' - L'A'));
}
else
{
UniDest->Buffer[i] = RtlpDowncaseUnicodeChar(UniSource->Buffer[i]);
}
}
return STATUS_SUCCESS;
}
/*
* @implemented
*
* NOTES
* if src is NULL dest is unchanged.
* dest is '\0' terminated when the MaximumLength allowes it.
* When dest fits exactly in MaximumLength characters the '\0' is ommitted.
*/
NTSTATUS
NTAPI
RtlAppendUnicodeToString(IN OUT PUNICODE_STRING Destination,
IN PCWSTR Source)
{
USHORT Length;
PWCHAR DestBuffer;
if (Source)
{
UNICODE_STRING UnicodeSource;
RtlInitUnicodeString(&UnicodeSource, Source);
Length = UnicodeSource.Length;
if (Destination->Length + Length > Destination->MaximumLength)
{
return STATUS_BUFFER_TOO_SMALL;
}
DestBuffer = &Destination->Buffer[Destination->Length / sizeof(WCHAR)];
RtlMoveMemory(DestBuffer, Source, Length);
Destination->Length += Length;
/* append terminating '\0' if enough space */
if (Destination->MaximumLength > Destination->Length)
{
DestBuffer[Length / sizeof(WCHAR)] = UNICODE_NULL;
}
}
return STATUS_SUCCESS;
}
/*
* @implemented
*
* NOTES
* if src is NULL dest is unchanged.
* dest is never '\0' terminated.
*/
NTSTATUS
NTAPI
RtlAppendAsciizToString(
IN OUT PSTRING Destination,
IN PCSZ Source)
{
SIZE_T Size;
if (Source)
{
Size = strlen(Source);
if (Destination->Length + Size > Destination->MaximumLength)
{
return STATUS_BUFFER_TOO_SMALL;
}
RtlMoveMemory(&Destination->Buffer[Destination->Length], Source, Size);
Destination->Length += (USHORT)Size;
}
return STATUS_SUCCESS;
}
/*
* @implemented
*/
VOID
NTAPI
RtlUpperString(PSTRING DestinationString,
const STRING *SourceString)
{
USHORT Length;
PCHAR Src, Dest;
Length = min(SourceString->Length,
DestinationString->MaximumLength);
Src = SourceString->Buffer;
Dest = DestinationString->Buffer;
DestinationString->Length = Length;
while (Length)
{
*Dest++ = RtlUpperChar(*Src++);
Length--;
}
}
/*
* @implemented
*
* NOTES
* See RtlpDuplicateUnicodeString
*/
NTSTATUS
NTAPI
RtlDuplicateUnicodeString(
IN ULONG Flags,
IN PCUNICODE_STRING SourceString,
OUT PUNICODE_STRING DestinationString)
{
PAGED_CODE_RTL();
if (SourceString == NULL || DestinationString == NULL ||
SourceString->Length > SourceString->MaximumLength ||
(SourceString->Length == 0 && SourceString->MaximumLength > 0 && SourceString->Buffer == NULL) ||
Flags == RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING || Flags >= 4)
{
return STATUS_INVALID_PARAMETER;
}
if ((SourceString->Length == 0) &&
(Flags != (RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE |
RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING)))
{
DestinationString->Length = 0;
DestinationString->MaximumLength = 0;
DestinationString->Buffer = NULL;
}
else
{
UINT DestMaxLength = SourceString->Length;
if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
DestMaxLength += sizeof(UNICODE_NULL);
DestinationString->Buffer = RtlpAllocateStringMemory(DestMaxLength, TAG_USTR);
if (DestinationString->Buffer == NULL)
return STATUS_NO_MEMORY;
RtlCopyMemory(DestinationString->Buffer, SourceString->Buffer, SourceString->Length);
DestinationString->Length = SourceString->Length;
DestinationString->MaximumLength = DestMaxLength;
if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
DestinationString->Buffer[DestinationString->Length / sizeof(WCHAR)] = 0;
}
return STATUS_SUCCESS;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlValidateUnicodeString(
_In_ ULONG Flags,
_In_ PCUNICODE_STRING String)
{
/* In Windows <= 2003 no flags are supported yet! */
if (Flags != 0)
return STATUS_INVALID_PARAMETER;
/* NOTE: a NULL Unicode string pointer is considered to be a valid one! */
if (String == NULL)
{
return STATUS_SUCCESS;
}
else if (!((String->Buffer == NULL) && (String->Length != 0 || String->MaximumLength != 0)) &&
(String->Length % sizeof(WCHAR) == 0) &&
(String->MaximumLength % sizeof(WCHAR) == 0) &&
(String->Length <= String->MaximumLength))
{
return STATUS_SUCCESS;
}
else
{
return STATUS_INVALID_PARAMETER;
}
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlpEnsureBufferSize(
IN ULONG Flags,
IN OUT PRTL_BUFFER Buffer,
IN SIZE_T RequiredSize)
{
PUCHAR NewBuffer;
/* Parameter checks */
if (Flags & ~RTL_SKIP_BUFFER_COPY)
return STATUS_INVALID_PARAMETER;
if (Buffer == NULL)
return STATUS_INVALID_PARAMETER;
/*
* We don't need to grow the buffer if its size
* is already larger than the required size.
*/
if (Buffer->Size >= RequiredSize)
return STATUS_SUCCESS;
/*
* When we are using the static buffer as our buffer, we don't need
* to grow it if its size is already larger than the required size.
* In this case, just keep it but update the current buffer size to
* the one requested.
* (But NEVER EVER modify the size of the static buffer!!)
* Otherwise, we'll need to create a new buffer and use this one instead.
*/
if ( (Buffer->Buffer == Buffer->StaticBuffer) &&
(Buffer->StaticSize >= RequiredSize) )
{
Buffer->Size = RequiredSize;
return STATUS_SUCCESS;
}
/* The buffer we are using is not large enough, try to create a bigger one */
NewBuffer = RtlpAllocateStringMemory(RequiredSize, TAG_USTR);
if (NewBuffer == NULL)
return STATUS_NO_MEMORY;
/* Copy the original content if needed */
if (!(Flags & RTL_SKIP_BUFFER_COPY))
{
RtlMoveMemory(NewBuffer, Buffer->Buffer, Buffer->Size);
}
/* Free the original buffer only if it's not the static buffer */
if (Buffer->Buffer != Buffer->StaticBuffer)
{
RtlpFreeStringMemory(Buffer->Buffer, TAG_USTR);
}
/* Update the members */
Buffer->Buffer = NewBuffer;
Buffer->Size = RequiredSize;
/* Done */
return STATUS_SUCCESS;
}
static
BOOLEAN
RtlpIsCharInUnicodeString(
IN WCHAR Char,
IN PCUNICODE_STRING MatchString,
IN BOOLEAN CaseInSensitive)
{
USHORT i;
if (CaseInSensitive)
Char = RtlpUpcaseUnicodeChar(Char);
for (i = 0; i < MatchString->Length / sizeof(WCHAR); i++)
{
WCHAR OtherChar = MatchString->Buffer[i];
if (CaseInSensitive)
OtherChar = RtlpUpcaseUnicodeChar(OtherChar);
if (Char == OtherChar)
return TRUE;
}
return FALSE;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
RtlFindCharInUnicodeString(
IN ULONG Flags,
IN PCUNICODE_STRING SearchString,
IN PCUNICODE_STRING MatchString,
OUT PUSHORT Position)
{
BOOLEAN Found;
const BOOLEAN WantToFind = (Flags & RTL_FIND_CHAR_IN_UNICODE_STRING_COMPLEMENT_CHAR_SET) == 0;
const BOOLEAN CaseInSensitive = (Flags & RTL_FIND_CHAR_IN_UNICODE_STRING_CASE_INSENSITIVE) != 0;
USHORT i, Length;
DPRINT("RtlFindCharInUnicodeString(%u, '%wZ', '%wZ', %p)\n",
Flags, SearchString, MatchString, Position);
/* Parameter checks */
if (Position == NULL)
return STATUS_INVALID_PARAMETER;
*Position = 0;
if (Flags & ~(RTL_FIND_CHAR_IN_UNICODE_STRING_START_AT_END |
RTL_FIND_CHAR_IN_UNICODE_STRING_COMPLEMENT_CHAR_SET |
RTL_FIND_CHAR_IN_UNICODE_STRING_CASE_INSENSITIVE))
return STATUS_INVALID_PARAMETER;
/* Search */
Length = SearchString->Length / sizeof(WCHAR);
if (Flags & RTL_FIND_CHAR_IN_UNICODE_STRING_START_AT_END)
{
for (i = Length - 1; (SHORT)i >= 0; i--)
{
Found = RtlpIsCharInUnicodeString(SearchString->Buffer[i], MatchString, CaseInSensitive);
if (Found == WantToFind)
{
*Position = i * sizeof(WCHAR);
return STATUS_SUCCESS;
}
}
}
else
{
for (i = 0; i < Length; i++)
{
Found = RtlpIsCharInUnicodeString(SearchString->Buffer[i], MatchString, CaseInSensitive);
if (Found == WantToFind)
{
*Position = (i + 1) * sizeof(WCHAR);
return STATUS_SUCCESS;
}
}
}
return STATUS_NOT_FOUND;
}
/*
* @implemented
*
* NOTES
* Get the maximum of MAX_COMPUTERNAME_LENGTH characters from the dns.host name until the dot is found.
* Convert is to an uppercase oem string and check for unmapped characters.
* Then convert the oem string back to an unicode string.
*/
NTSTATUS
NTAPI
RtlDnsHostNameToComputerName(PUNICODE_STRING ComputerName, PUNICODE_STRING DnsHostName, BOOLEAN AllocateComputerNameString)
{
NTSTATUS Status;
ULONG Length;
ULONG ComputerNameLength;
ULONG ComputerNameOemNLength;
OEM_STRING ComputerNameOem;
CHAR ComputerNameOemN[MAX_COMPUTERNAME_LENGTH + 1];
Status = STATUS_INVALID_COMPUTER_NAME;
ComputerNameLength = DnsHostName->Length;
/* find the first dot in the dns host name */
for (Length = 0; Length < DnsHostName->Length / sizeof(WCHAR); Length++)
{
if (DnsHostName->Buffer[Length] == L'.')
{
/* dot found, so set the length for the oem translation */
ComputerNameLength = Length * sizeof(WCHAR);
break;
}
}
/* the computername must have one character */
if (ComputerNameLength > 0)
{
ComputerNameOemNLength = 0;
/* convert to oem string and use uppercase letters */
Status = RtlUpcaseUnicodeToOemN(ComputerNameOemN,
MAX_COMPUTERNAME_LENGTH,
&ComputerNameOemNLength,
DnsHostName->Buffer,
ComputerNameLength);
/* status STATUS_BUFFER_OVERFLOW is not a problem since the computername shoud only
have MAX_COMPUTERNAME_LENGTH characters */
if ((Status == STATUS_SUCCESS) ||
(Status == STATUS_BUFFER_OVERFLOW))
{
/* set the termination for the oem string */
ComputerNameOemN[MAX_COMPUTERNAME_LENGTH] = 0;
/* set status for the case the next function failed */
Status = STATUS_INVALID_COMPUTER_NAME;
/* fillup the oem string structure with the converted computername
and check it for unmapped characters */
ComputerNameOem.Buffer = ComputerNameOemN;
ComputerNameOem.Length = (USHORT)ComputerNameOemNLength;
ComputerNameOem.MaximumLength = (USHORT)(MAX_COMPUTERNAME_LENGTH + 1);
if (RtlpDidUnicodeToOemWork(DnsHostName, &ComputerNameOem))
{
/* no unmapped character so convert it back to an unicode string */
Status = RtlOemStringToUnicodeString(ComputerName,
&ComputerNameOem,
AllocateComputerNameString);
}
}
}
return Status;
}
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