ASP安全检测与过滤函数SafeCheck

"
if checkString="" then
 SafeCheck=ErrorRoot&"00001"
 exit function
end if

CheckString=Replace(CheckString,"'","&#39")
select case CheckType
case 0
 CheckString=trim(CheckString)
 SafeCheck=Left(CheckString,CheckLength)
case 1
 if not isnumberic(CheckString) then
  SafeCheck=ErrorRoot&"00002"
  exit function
 else
  SafeCheck=Left(CheckString,CheckLength)
 end if
case 2
 tempVar=IsDate(CheckString)
 if Not TempVar then
  SafeCheck=ErrorRoot&"00003"
  exit function
 else
  select case CheckLength
  case 0
   SafeCheck=FormatDateTime(CheckString,vbShortDate)
  case 1
   SafeCheck=FormatDateTime(CheckString,vbLongDate)
  case 2
   SafeCheck=CheckString
  end select
 end if
case 3
 tempVar=FormatCurrency(CheckString,0)
 if Err then
  SafeCheck=ErrorRoot&"00004"
  exit function
 else
  SafeCheck=FormatCurrency(CheckString,CheckLength)
 end if
case 4
 sTemp = CheckString
 If IsNull(sTemp) = True Then
  SafeCheck=ErrorRoot&"00005"
  Exit Function
 End If
 sTemp = Replace(sTemp, "&", "&")
 sTemp = Replace(sTemp, "<", "&lt;")
 sTemp = Replace(sTemp, ">", "&gt;")
 sTemp = Replace(sTemp, Chr(34), "&quot;")
 sTemp = Replace(sTemp, Chr(10), "<br>")
 SafeCheck = Left(sTemp,CheckLength)
case 5
 sTemp = CheckString
 If IsNull(sTemp) = True Then
  SafeCheck=ErrorRoot&"00006"
  Exit Function
 End If
 sTemp = Replace(sTemp, "&amp;", "&")
 sTemp = Replace(sTemp, "&lt;", "<")
 sTemp = Replace(sTemp, "&gt;", ">")
 sTemp = Replace(sTemp, "&quot;", Chr(34))
 sTemp = Replace(sTemp, "<br>",Chr(10))
 SafeCheck = Left(sTemp,CheckLength)
case 6
 s_BadStr = "' 　&<>?%,;:()`~!@#$^*{}[]

关键词：ASP安全检测与过滤函数SafeCheck