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[RTL] Fix RtlIsValidOemCharacter implementation for Multibyte code pages

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CORE-17571
This commit is contained in:
Jérôme Gardou 2021-05-17 16:14:26 +02:00 committed by Jérôme Gardou
parent 1b08836338
commit 49fcbe7cd8
1 changed files with 16 additions and 5 deletions
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21
sdk/lib/rtl/unicode.c
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@ -519,16 +519,24 @@ RtlIsValidOemCharacter(IN PWCHAR Char)
/* If multi-byte code page present */
if (NlsMbOemCodePageTag)
{
USHORT Offset = 0;
USHORT Offset;
OemChar = NlsUnicodeToMbOemTable[*Char];
/* If character has Lead Byte */
if (NlsOemLeadByteInfo[HIBYTE(OemChar)])
Offset = NlsOemLeadByteInfo[HIBYTE(OemChar)];
Offset = NlsOemLeadByteInfo[HIBYTE(OemChar)];
if (Offset)
{
/* Use DBCS table */
UnicodeChar = NlsOemLeadByteInfo[Offset + LOBYTE(OemChar)];
}
else
{
UnicodeChar = NlsOemToUnicodeTable[OemChar];
}
/* Receive Unicode character from the table */
UnicodeChar = RtlpUpcaseUnicodeChar(NlsOemToUnicodeTable[LOBYTE(OemChar) + Offset]);
/* Upcase */
UnicodeChar = RtlpUpcaseUnicodeChar(UnicodeChar);
/* Receive OEM character from the table */
OemChar = NlsUnicodeToMbOemTable[UnicodeChar];
@ -544,7 +552,10 @@ RtlIsValidOemCharacter(IN PWCHAR Char)
/* Not valid character, failed */
if (OemChar == NlsOemDefaultChar)
{
DPRINT1("\\u%04x is not valid for OEM\n", *Char);
return FALSE;
}
*Char = UnicodeChar;