大家如果还有好的建议算法,就联系我!!:) '****************************** '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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