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asp下過濾非法的SQL字符的函數(shù)代碼

 更新時(shí)間:2010年05月27日 11:34:39   作者:  
過濾非法的SQL字符,防止sql注入等。里面的體會(huì)思路主要運(yùn)用了批量替換,是個(gè)不錯(cuò)的思路。
復(fù)制代碼 代碼如下:

'**************************************************
'函數(shù)名:R
'作 用:過濾非法的SQL字符
'參 數(shù):strChar-----要過濾的字符
'返回值:過濾后的字符
'**************************************************
Public Function R(strChar)
If strChar = "" Or IsNull(strChar) Then R = "":Exit Function
Dim strBadChar, arrBadChar, tempChar, I
'strBadChar = "$,#,',%,^,&,?,(,),<,>,[,],{,},/,\,;,:," & Chr(34) & "," & Chr(0) & ""
strBadChar = "+,',--,%,^,&,?,(,),<,>,[,],{,},/,\,;,:," & Chr(34) & "," & Chr(0) & ""
arrBadChar = Split(strBadChar, ",")
tempChar = strChar
For I = 0 To UBound(arrBadChar)
tempChar = Replace(tempChar, arrBadChar(I), "")
Next
tempChar = Replace(tempChar, "@@", "@")
R = tempChar
End Function
'過濾xss
Function CheckXSS(ByVal strCode)
Dim Re
Set re=new RegExp
re.IgnoreCase =True
re.Global=True
re.Pattern="<.[^>]*(style).>"
strCode = re.Replace(strCode, "")
re.Pattern="<(a.[^>]*|\/a|li|br|B|\/li|\/B|font.[^>]*|\/font)>"
strCode=re.Replace(strCode,"[$1]")
strCode=Replace(Replace(strCode, "<", "&lt;"), ">", "&gt;")
re.Pattern="\[(a.[^\]]*|\/a|li|br|B|\/li|\/B|font.[^\]]*|\/font)\]"
strCode=re.Replace(strCode,"<$1>")
re.Pattern="<.[^>]*(on(load|click|dbclick|mouseover|mouseout|mousedown|mouseup|mousewheel|keydown|submit|change|focus)).>"
strCode = re.Replace(strCode, "")
Set Re=Nothing
CheckXSS=strCode
End Function

Function FilterIDs(byval strIDs)
Dim arrIDs,i,strReturn
strIDs=Trim(strIDs)
If Len(strIDs)=0 Then Exit Function
arrIDs=Split(strIDs,",")
For i=0 To Ubound(arrIds)
If ChkClng(Trim(arrIDs(i)))<>0 Then
strReturn=strReturn & "," & Int(arrIDs(i))
End If
Next
If Left(strReturn,1)="," Then strReturn=Right(strReturn,Len(strReturn)-1)
FilterIDs=strReturn
End Function

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