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MdePkg/UefiFileHandleLib: Refine the check for valid Ascii character

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The commit will check if bit 7 is set of an Ascii character to judge its
validity.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
This commit is contained in:
Hao Wu 2016-11-17 14:59:54 +08:00
parent 12233c1917
commit fbda8a344b
1 changed files with 2 additions and 2 deletions
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4
MdePkg/Library/UefiFileHandleLib/UefiFileHandleLib.c
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@ -1,7 +1,7 @@
/** @file /** @file
Provides interface to EFI_FILE_HANDLE functionality. Provides interface to EFI_FILE_HANDLE functionality.
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved. <BR> Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved. <BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at which accompanies this distribution. The full text of the license may be found at
@ -1138,7 +1138,7 @@ FileHandleWriteLine(
} }
UnicodeStrToAsciiStrS (Buffer, AsciiBuffer, Size); UnicodeStrToAsciiStrS (Buffer, AsciiBuffer, Size);
for (Index = 0; Index < Size; Index++) { for (Index = 0; Index < Size; Index++) {
if (!((AsciiBuffer[Index] >= 0) && (AsciiBuffer[Index] < 128))){ if ((AsciiBuffer[Index] & BIT7) != 0) {
FreePool(AsciiBuffer); FreePool(AsciiBuffer);
return EFI_INVALID_PARAMETER; return EFI_INVALID_PARAMETER;
} }