其實SQL注入漏洞不可怕,知道原理+ 耐心仔細,就可以徹底防範
下面給4個函數,足夠你抵擋一切SQL注入漏洞!讀懂程式碼,你就能融會貫通。
注意要將所有的request物件過濾:包括request.cookie, request.ServerVariables 等等容易被忽略的物件:
程式碼
複製代碼代碼如下:
function killn(byval s1) '濾波數值型參數
if not isnumeric(s1) then
killn=0
else
if s1〈0 or s1〉2147483647 then
killn=0
else
killn=clng(s1)
end if
end if
end function
function killc(byval s1) 濾波貨幣型參數
if not isnumeric(s1) then
killc=0
else
killc=formatnumber(s1,2,-1,0,0)
end if
end function
function killw(byval s1) '過濾字元型參數
if len(s1)=0 then
killw=""
else
killw=trim(replace(s1,"'",""))
end if
end function
function killbad(byval s1) 過濾所有危險字符,包括跨站腳本
If len(s1) = 0 then
killbad=""
else
killbad = trim(replace(replace(replace(replace(replace(replace(replace(replace(s1,Chr(10), "〈br〉"), Chr(34), """), "〉", "> "), "〈", "<"), "&", "&"),chr(39),"'"),chr(32)," "),chr(13),""))
end if
end function