正则表达式检查来访IP是否合法的实际应用

正则表达式检查来访IP是否合法的实际应用

subchkIP(boardid)

dimrsIP

dimipArr

dimignored

dimi

dimip

dimsql

ip=Request.ServerVariables("REMOTE_ADDR")

ignored=false

ifnotisempty(boardid)then

sql="selectignoreipfromboardwhereboardid="&cstr(boardid)

setrsIP=conn.execute(sql)

ifnot(rsIP.eofandrsIP.bof)then

ifinstr(cstr(rsIP("ignoreip")&""),chr(13)&chr(10))then

iparr=split(rsIP("ignoreip"),chr(13)&chr(10))

fori=0toubound(iparr)

iftrim(iparr(i))<>""andleft(ip,len(trim(iparr(i))))=trim(iparr(i))then

ignored=true

exitfor

endif

next

else

iparr=rsIP("ignoreip")

ifip=trim(iparr)then

ignored=true

endif

endif

endif

rsIP.close

endif

ifignoredthen

response.write"window.location.href='ignoreip.htm'"

endif

endsub