'******************************
'Function CheckIp(cInput_Ip,cBound_Ip)
'Created by qqdao, qqdao@263.net 2001/11/28
'說明:首先需要根據;號迴圈,然後判斷是否含有"-",如果有則進行拆分處理,最後判斷是否在範圍內
'參數: cInput_Ip,代檢查的ip
'cBound_Ip,給定的範圍格式為,單個ip,和範圍ip,範圍ip最後使用”-“分割,如果是“*”則必須放到最後一位
'每個範圍後添加":ALLOW"表示允許登陸,添加":REFUSE"表示拒絕登陸。多個範圍用”;“隔開
'例如192.168.1*.*:ALLOW;192.168.1.1:ALLOW;192.168.1.1-10:REFUSE"
'傳回值: true/false
'更新:2001/12/05 支援ALLOW,REFUSE支援'*‘,不想對?支援,因為和*差不多
'******************************
function CheckIp(cInput_Ip,cBound_Ip)
dim cSingle_Ip,cTemp_IP,cStart_IP,cEnd_Ip
CheckIp = false
cSingle_Ip=split(cBound_Ip,";")
for i=0 to ubound(cSingle_Ip)
if Instr(cSingle_Ip(i),"REFUSE") <> 0 then “就是拒絕了
cTemp_IP = left(cSingle_Ip(i),instr(cSingle_Ip(i),":")-1)
if Instr(cTemp_IP,"*") <> 0 then “是寬範圍
cStart_IP = left(cTemp_IP,instr(cTemp_IP,"*")-1)
if left(cInput_Ip,len(cStart_IP))=cStart_IP then
CheckIp = false
exit function
end if
end if
if Instr(cTemp_IP,"-") = 0 then
cStart_IP = cTemp_IP
cEnd_Ip = cTemp_IP
else
cStart_IP = left(cTemp_IP,instr(cTemp_IP,"-")-1)
cEnd_Ip = left(cStart_IP,InStrRev(cStart_IP,".")-1)+"."+mid(cTemp_IP,instr(cTemp_IP,"-")+1)
end if
if Ip2Str(cInput_Ip)>=Ip2Str(cStart_IP) and Ip2Str(cInput_Ip)<=Ip2Str(cEnd_Ip) then
CheckIp = false
exit function
end if
elseif Instr(cSingle_Ip(i),"ALLOW") <> 0 then “允許
cTemp_IP = left(cSingle_Ip(i),instr(cSingle_Ip(i),":")-1)
if Instr(cTemp_IP,"*") <> 0 then “是寬範圍
cStart_IP = left(cTemp_IP,instr(cTemp_IP,"*")-1)
if left(cInput_Ip,len(cStart_IP))=cStart_IP then
CheckIp = true
end if
end if
if Instr(cTemp_IP,"-") = 0 then
cStart_IP = cTemp_IP
cEnd_Ip = cTemp_IP
else
cStart_IP = left(cTemp_IP,instr(cTemp_IP,"-")-1)
cEnd_Ip = left(cStart_IP,InStrRev(cStart_IP,".")-1)+"."+mid(cTemp_IP,instr(cTemp_IP,"-")+1)
end if
if Ip2Str(cInput_Ip)>=Ip2Str(cStart_IP) and Ip2Str(cInput_Ip)<=Ip2Str(cEnd_Ip) then
CheckIp =true
else
CheckIp =false
end if
end if
next
end function
'******************************
'Function Ip2Str(cIp)
'Created by qqdao, qqdao@263.net 2001/11/28
'參考動網ip演算法
'參數:cIp ip地址
'傳回值: 轉換後數值
'******************************
function Ip2Str(cIp)
Dim str1,str2,str3,str4
Dim cIp_Temp
if cIp="127.0.0.1" then cIp="192.168.0.1"
str1=left(cIp,instr(cIp,".")-1)
cIp_Temp=mid(cIp,instr(cIp,".")+1)
str2=left(cIp_Temp,instr(cIp_Temp,".")-1)
cIp_Temp=mid(cIp_Temp,instr(cIp_Temp,".")+1)
str3=left(cIp_Temp,instr(cIp_Temp,".")-1)
str4=mid(cIp_Temp,instr(cIp_Temp,".")+1)
if isNumeric(str1)=0 or isNumeric(str2)=0 or isNumeric(str3)=0 or isNumeric(str4)=0 then
else
Ip2Str=cint(str1)*256*256*256+cint(str2)*256*256+cint(str3)*256+cint(str4)-1
end if
end function