改进的SQL防注入(加强抑错)

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‘’ASP防注入之解决方案
‘’特殊页面处理
‘’因为有些页通过流式传递(比如含有文件上传的表单)
‘’如果单一使用穷举Form对象的操作就会出错
‘’所以要把这些页面过滤出来,同时在页面中使用sql("检测的字串")才行
‘’垃圾猪zero@new57.com
‘’http://blog.csdn.net/cfaq

‘’源码下载http://www.new57.com/softback/sql.rar

 

 

‘’将本页用include方法放在头部以让所有页都可以调用,比如include在conn.asp里
‘’如果有流式上传的页面请把该页加到表page中,以防form冲突

 

Dim N_no,N_noarray,req_Qs,req_F,N_i,N_dbstr,Conn,N_rs,N_userIP,N_thispage
N_userip = Request.ServerVariables("REMOTE_ADDR")
N_thispage = LCase(Request.ServerVariables("URL"))

N_no =  "‘’|;|and|exec|insert|select|delete|update|count|*|%|chr|mid|master|truncate|char|declare" ‘’可以自己修改怀疑是注入操作的字串
N_noarray = split(LCase(N_no),"|")


Call DBopen()
Call N_check_Qs()
Call N_checkPage()
Call DBCLose()


‘’检测当前页是否是特殊页是就调用 N_check_form()
sub N_checkPage()

 set N_rs = server.CreateObject("ADODB.RecordSet")
  N_rs.open "select * from page where spcpage like ‘’%"&N_thispage&"%‘’",conn,1,1
  if  (N_rs.eof AND N_rs.Bof) then
   Call N_check_form()
  end if
  N_rs.Close()
 set N_rs = nothing

end sub

 

 

‘’检测给定字串
sub N_sql(agsql)
 ‘’这里是不记录数据库,如果要改请自己修改
 N_check "CUS",req_Qs,"OTHER"
end sub

‘’检测Request.Form
sub N_check_form()
 If Request.Form<>"" Then
 For Each req_F In Request.Form
   N_check req_F,Request.Form(req_F),"POST"
 Next
 end if
end sub

‘’检测Request.QueryString
sub N_check_Qs()
 If Request.QueryString<>"" Then
  For Each req_Qs In Request.QueryString
   N_check req_Qs,Request.QueryString(req_Qs),"GET"
  Next
 end if
end sub

‘’检测
sub N_check(ag,agsql,sqltype)
 For N_i=0 To Ubound(N_noarray)
  If Instr(LCase(agsql),N_noarray(N_i))<>0 Then
  call N_regsql(ag,agsql,sqltype)
  Response.Write "MO"
  end if
 Next
end sub

‘’记录并停止输出
‘’ag 名称
‘’agsql 内容
‘’sqltype 类型
sub N_regsql(ag,agsql,sqltype)
 if(sqltype<>"OTHER") then
  Conn.Execute("insert into SqlIn(Sqlin_IP,SqlIn_Web,SqlIn_FS,SqlIn_CS,SqlIn_SJ) values(‘’"&N_userip&"‘’,‘’"&N_thispage&"‘’,‘’"&sqltype&"‘’,‘’"&ag&"‘’,‘’"&agsql&"‘’)")
 end if
  Response.Write "<Script Language=JavaScript>alert(‘’请不要在参数中包含非法字符尝试注入！‘’);</Script>"
  Response.Write "<span style=‘’font-size:12px‘’>非法操作！系统做了如下记录↓<br>"
  Response.Write "操作ＩＰ："&N_userip&"<br>"
  Response.Write "操作时间："&Now&"<br>"
  Response.Write "操作页面："&N_thispage&"<br>"
  Response.Write "提交方式："&sqltype&"<br>"
  Response.Write "提交参数："&ag&"<br>"
  Response.Write "提交数据："&agsql&"</span>"
   
  Response.end
end sub


Sub DBopen()
 N_dbstr="DBQ="+server.mappath("Sql.mdb")+";DefaultDir=;DRIVER={Microsoft Aclearcase/" target="_blank" >ccess Driver (*.mdb)};"
 Set Conn=Server.CreateObject("ADODB.CONNECTION")
 Conn.open N_dbstr
end SUB


Sub DBCLose()
 Conn.close
 Set Conn = Nothing
End sub
%>

原文转自：http://www.ltesting.net