改进的SQL防注入(加强抑错)
类别: ASP教程 
<%
\'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 Access Driver (*.mdb)};\"
Set Conn=Server.CreateObject(\"ADODB.CONNECTION\")
Conn.open N_dbstr
end SUB
Sub DBCLose()
Conn.close
Set Conn = Nothing
End sub
%>
