ASP安全检测与过滤函数SafeCheck

'--------------------------------------------------------------------------
'作用:安全字符串检测函数
'名字:SafeCheck
'参数:CheckString,CheckType,CheckLength
'说明:
'Checkstring待检测字符串:任意字符.
'CheckType检测类型0正常短字符1数字2日期3金钱4编码HTML5解码HTML6登录字符串7防攻击检测
'CheckLength检测类型长度:类型为int,当为金钱时为小数点的位置
'返回值:如果通过检测,返回正确字符串,
'如果未通过则返回错误代码SYSTEM_ERROR|ERROR_CODE
'Script Writen by :SnowDu(杜雪.NET)
'Web:http://www.snsites.com/
'--------------------------------------------------------------------------
function SafeCheck(CheckString,CheckType,CheckLength)
On Error Resume Next
ErrorRoot="SYSTEM_ERROR|"
if checkString="" then
SafeCheck=ErrorRoot&"00001"
exit function
end if
CheckString=Replace(CheckString,"'","'")
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"