日期:2013-02-25  浏览次数:20966 次

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