diff options
Diffstat (limited to 'MdeModulePkg/Universal/SetupBrowserDxe/Setup.c')
| -rw-r--r-- | MdeModulePkg/Universal/SetupBrowserDxe/Setup.c | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Setup.c b/MdeModulePkg/Universal/SetupBrowserDxe/Setup.c index 66c4313861..cd3c8cc98b 100644 --- a/MdeModulePkg/Universal/SetupBrowserDxe/Setup.c +++ b/MdeModulePkg/Universal/SetupBrowserDxe/Setup.c @@ -1429,40 +1429,44 @@ BufferToValue ( *StringPtr = L'\0';
LengthStr = StrLen (Value);
+
+ //
+ // Value points to a Unicode hexadecimal string, we need to convert the string to the value with CHAR16/UINT8...type.
+ // When generating the Value string, we follow this rule: 1 byte -> 2 Unicode characters (for string: 2 byte(CHAR16) ->4 Unicode characters).
+ // So the maximum value string length of a question is : Question->StorageWidth * 2.
+ // If the value string length > Question->StorageWidth * 2, only set the string length as Question->StorageWidth * 2, then convert.
+ //
+ if (LengthStr > (UINTN) Question->StorageWidth * 2) {
+ Length = (UINTN) Question->StorageWidth * 2;
+ } else {
+ Length = LengthStr;
+ }
+
Status = EFI_SUCCESS;
if (!IsBufferStorage && IsString) {
//
// Convert Config String to Unicode String, e.g "0041004200430044" => "ABCD"
// Add string tail char L'\0' into Length
//
- Length = Question->StorageWidth + sizeof (CHAR16);
- if (Length < ((LengthStr / 4 + 1) * 2)) {
- Status = EFI_BUFFER_TOO_SMALL;
- } else {
- DstBuf = (CHAR16 *) Dst;
- ZeroMem (TemStr, sizeof (TemStr));
- for (Index = 0; Index < LengthStr; Index += 4) {
- StrnCpyS (TemStr, sizeof (TemStr) / sizeof (CHAR16), Value + Index, 4);
- DstBuf[Index/4] = (CHAR16) StrHexToUint64 (TemStr);
- }
- //
- // Add tailing L'\0' character
- //
- DstBuf[Index/4] = L'\0';
+ DstBuf = (CHAR16 *) Dst;
+ ZeroMem (TemStr, sizeof (TemStr));
+ for (Index = 0; Index < Length; Index += 4) {
+ StrnCpyS (TemStr, sizeof (TemStr) / sizeof (CHAR16), Value + Index, 4);
+ DstBuf[Index/4] = (CHAR16) StrHexToUint64 (TemStr);
}
+ //
+ // Add tailing L'\0' character
+ //
+ DstBuf[Index/4] = L'\0';
} else {
- if (Question->StorageWidth < ((LengthStr + 1) / 2)) {
- Status = EFI_BUFFER_TOO_SMALL;
- } else {
- ZeroMem (TemStr, sizeof (TemStr));
- for (Index = 0; Index < LengthStr; Index ++) {
- TemStr[0] = Value[LengthStr - Index - 1];
- DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
- if ((Index & 1) == 0) {
- Dst [Index/2] = DigitUint8;
- } else {
- Dst [Index/2] = (UINT8) ((DigitUint8 << 4) + Dst [Index/2]);
- }
+ ZeroMem (TemStr, sizeof (TemStr));
+ for (Index = 0; Index < Length; Index ++) {
+ TemStr[0] = Value[LengthStr - Index - 1];
+ DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
+ if ((Index & 1) == 0) {
+ Dst [Index/2] = DigitUint8;
+ } else {
+ Dst [Index/2] = (UINT8) ((DigitUint8 << 4) + Dst [Index/2]);
}
}
}
@@ -3757,6 +3761,11 @@ GetOffsetFromConfigResp ( //
//
+ // Convert all hex digits in ConfigResp to lower case before searching.
+ //
+ HiiToLower (ConfigResp);
+
+ //
// 1. Directly use Question->BlockName to find.
//
RequestElement = StrStr (ConfigResp, Question->BlockName);
|