ip限制函数
'******************************
'Function CheckIp(cInput_Ip,cBound_Ip)
'Created by qqdao, qqdao@263.net 2001/11/28
'说明：首先需要根据;号循环，然后判断是否含有"-"，如果有则进行拆分处理，最后判断是否在范围内
'参数： cInput_Ip,代检查的ip
' cBound_Ip,给定的范围格式为,单个ip,和范围ip，范围ip最后使用”-“分割，如果是“*”则必须放到最后一位
' 每个范围后添加":ALLOW"表示允许登陆，添加":REFUSE"表示拒绝登陆。多个范围用”;“隔开
' 例如192.168.1*.*:ALLOW;192.168.1.1:ALLOW;192.168.1.1-10:REFUSE"
'返回值: true/false
'更新：2001/12/05 支持ALLOW,REFUSE支持’*‘,不想对？支持，因为和*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 '就是拒绝了
cTemp_IP = left(cSingle_Ip(I),instr(cSingle_Ip(I),":"
-1)
if Instr(cTemp_IP,"*"
<> 0 then '是宽范围
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 '允许
cTemp_IP = left(cSingle_Ip(I),instr(cSingle_Ip(I),":"
-1)
if Instr(cTemp_IP,"*"
<> 0 then '是宽范围
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
'参考动网ip算法
'参数：cIp ip地址
'返回值: 转换后数值
'******************************
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
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