ASP上两个防止SQL注入式攻击Function

王朝asp·作者佚名 2006-01-09

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'==========================

'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

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

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