<%
    '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/
    'Web:http://www.knowsky.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 [转自：711网络工作室 http://www.tc711.com]

    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 [转自：711网络工作室 http://www.tc711.com]

    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, "<", "<")
    sTemp = Replace(sTemp, ">", ">")
    sTemp = Replace(sTemp, Chr(34), """)
    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, "&", "&")
    sTemp = Replace(sTemp, "<", "<")
    sTemp = Replace(sTemp, ">", ">")
    sTemp = Replace(sTemp, """, Chr(34))
    sTemp = Replace(sTemp, "<br>",Chr(10))
    SafeCheck = Left(sTemp,CheckLength)

    case 6
    s_BadStr = "' 　&<>?%,;:()`~!@#$^*{}[]|+-=" & Chr(34) & Chr(9) & Chr(32)
    n = Len(s_BadStr)
    IsSafeStr = True
    For i = 1 To n
    If Instr(CheckString, Mid(s_BadStr, i, 1)) > 0 Then
    IsSafeStr = False
    End If
    Next
    if IsSafeStr then
    SafeCheck=left(CheckString,CheckLength)
    else
    SafeCheck=ErrorRoot&"00007"
    Exit Function
    end if

    case 7
    s_Filter="net user|xp_cmdshell|/add|select|count|asc|char|mid|'|""|"
    S_Filter=S_Filter&"insert|delete|drop|truncate|from|%|declare|-"
    S_Filters=split(S_Filter,"|")
    isFound=false
    for i=0 to ubound(S_Filters)-1
    if Instr(lcase(CheckString),lcase(S_Filters(i)))<>0 then
    isFound=true
    exit for
    end if
    next
    if isFound then
    SafeCheck=ErrorRoot&"00008"
    Exit Function
    else
    SafeCheck=left(CheckString,CheckLength)
    end if
    end select
    end function
    %>