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MdePkg: Refine UefiFileHandleLib to avoid write non-ASCII char into ASCII file. 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qiu Shumin <shumin.qiu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18430 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Qiu Shumin 2015-09-10 02:45:30 +00:00 committed by shenshushi
parent 78c8ec8a3f
commit 1cdc35c42c
1 changed files with 7 additions and 0 deletions
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7
MdePkg/Library/UefiFileHandleLib/UefiFileHandleLib.c
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@ -1079,6 +1079,7 @@ FileHandleWriteLine(
EFI_STATUS Status;
CHAR16 CharBuffer;
UINTN Size;
UINTN Index;
UINTN CharSize;
UINT64 FileSize;
UINT64 OriginalFilePosition;
@ -1136,6 +1137,12 @@ FileHandleWriteLine(
return EFI_OUT_OF_RESOURCES;
}
UnicodeStrToAsciiStr (Buffer, AsciiBuffer);
for (Index = 0; Index < Size; Index++) {
if (!((AsciiBuffer[Index] >= 0) && (AsciiBuffer[Index] < 128))){
FreePool(AsciiBuffer);
return EFI_INVALID_PARAMETER;
}
}
Size = AsciiStrSize(AsciiBuffer) - sizeof(CHAR8);
Status = FileHandleWrite(Handle, &Size, AsciiBuffer);