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  • asp.net教程之ASP上两个防止SQL注入式攻击Function

  • 2017-06-11 20:10 来源:未知
''==========================
''过滤提交表单中的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("你所填写的信息:" & server.HTMLEncode(request.Form(items)) & "<br>含非法字符:" & nothis(i))
   response.write("</div>")
   response.write("对不起,你所填写的信息含非法字符!<a href=""#"" onclick=""history.back()"">返回</a>")
   response.End()
  end if 
  next
next 
end function
''==========================
''过滤查询中的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 "查询信息含非法字符!<a href=""#"" onclick=""history.back()"">返回</a>" 
response.end 

end if 

end function
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