Function GetDataSetting

rEFIt_UEFI/Platform/Settings.cpp:453–500

returns binary setting in a new allocated buffer and data length in dataLen. data can be specified in base64 encoded or in hex encoded

// or in <string></string> hex encoded
//
UINT8
*GetDataSetting (
                 IN      const TagDict* Dict,
                 IN      CONST CHAR8  *PropName,
                 OUT     UINTN  *DataLen
                 )
{
  const TagStruct* Prop;
  UINT8  *Data = NULL;

  Prop = Dict->propertyForKey(PropName);
  if (Prop != NULL) {
    if (Prop->isData() /*&& Prop->dataLen > 0*/) { //rehabman: allow zero length data
      // data property
      Data = (__typeof__(Data))AllocateZeroPool(Prop->getData()->dataLenValue());
      CopyMem(Data, Prop->getData()->dataValue(), Prop->getData()->dataLenValue());

      if (DataLen != NULL) *DataLen = Prop->getData()->dataLenValue();
      /*
       DBG("Data: %p, Len: %d = ", Data, Prop->dataLen);
       for (i = 0; i < Prop->dataLen; i++) {
       DBG("%02hhX ", Data[i]);
       }
       DBG("\n");
       */
    } else if ( Prop->isString() ) {
      // assume data in hex encoded string property
      UINT32 Len = (UINT32)Prop->getString()->stringValue().length() >> 1; // number of hex digits
      Data = (__typeof__(Data))AllocateZeroPool(Len); // 2 chars per byte, one more byte for odd number
      Len  = hex2bin(Prop->getString()->stringValue().c_str(), Data, Len);

      if (DataLen != NULL) *DataLen = Len;
      /*
       DBG("Data(str): %p, Len: %d = ", data, len);
       for (i = 0; i < Len; i++) {
       DBG("%02hhX ", data[i]);
       }
       DBG("\n");
       */
    } else {
      MsgLog("ATTENTION : PropName '%s' is not data or string. Ignored", PropName);
      if (DataLen != NULL) *DataLen = 0;
    }
  }else{
    if (DataLen != NULL) *DataLen = 0;
  }
  return Data;
}

EFI_STATUS
LoadUserSettings (