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      首頁 > 網站開發 > ASPnet >
      • asp.net教程之ASP上兩個防止SQL注入式攻擊Function

      • 2017-06-11 20:10 來源:未知
      ''==========================
      ''過濾提交表單中的SQL
      ''==========================
      function ForSqlForm()
      dim fqys,errc,i,items
      dim nothis(18) 
      nothis(0)="net user" 

      nothis(1)="xp_cmdshell" 

      nothis(2)="/add" 

      nothis(3)="exec%20master.dbo.xp_cmdshell" 

      nothis(4)="net localgroup administrators" 

      nothis(5)="select" 

      nothis(6)="count" 

      nothis(7)="asc" 

      nothis(8)="char" 

      nothis(9)="mid" 

      nothis(10)="''" 

      nothis(11)=":" 

      nothis(12)="""" 

      nothis(13)="insert" 

      nothis(14)="delete" 

      nothis(15)="drop" 

      nothis(16)="truncate" 

      nothis(17)="from" 

      nothis(18)="%"

      ''nothis(19)="@"  

      errc=false 

      for i= 0 to ubound(nothis) 
        for each items in request.Form
        if instr(request.Form(items),nothis(i))<>0 then 
         response.write("<div>")
         response.write("你所填寫的信息:" & server.HTMLEncode(request.Form(items)) & "<br>含非法字符:" & nothis(i))
         response.write("</div>")
         response.write("對不起,你所填寫的信息含非法字符!<a href=""#"" onclick=""history.back()"">返回</a>")
         response.End()
        end if 
        next
      next 
      end function
      ''==========================
      ''過濾查詢中的SQL
      ''==========================
      function ForSqlInjection()
      dim fqys,errc,i
      dim nothis(19) 
      fqys = request.ServerVariables("QUERY_STRING")
      nothis(0)="net user" 

      nothis(1)="xp_cmdshell" 

      nothis(2)="/add" 

      nothis(3)="exec%20master.dbo.xp_cmdshell" 

      nothis(4)="net localgroup administrators" 

      nothis(5)="select" 

      nothis(6)="count" 

      nothis(7)="asc" 

      nothis(8)="char" 

      nothis(9)="mid" 

      nothis(10)="''" 

      nothis(11)=":" 

      nothis(12)="""" 

      nothis(13)="insert" 

      nothis(14)="delete" 

      nothis(15)="drop" 

      nothis(16)="truncate" 

      nothis(17)="from" 

      nothis(18)="%"

      nothis(19)="@"  

      errc=false 

      for i= 0 to ubound(nothis) 

      if instr(FQYs,nothis(i))<>0 then 

      errc=true 

      end if 

      next 

      if errc then 
      response.write "查詢信息含非法字符!<a href=""#"" onclick=""history.back()"">返回</a>" 
      response.end 

      end if 

      end function
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