IP限制函数
大家如果还有好的建议算法,就联系我!!:)
“******************************
“FunctionCheckIp(cInput_Ip,cBound_Ip)
“Createdbyqqdao,[email protected]/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
“******************************
functionCheckIp(cInput_Ip,cBound_Ip)
dimcSingle_Ip,cTemp_IP,cStart_IP,cEnd_Ip
CheckIp=false
cSingle_Ip=split(cBound_Ip,";")
fori=0toubound(cSingle_Ip)
ifInstr(cSingle_Ip(i),"REFUSE")<>0then“就是拒绝了
cTemp_IP=left(cSingle_Ip(i),instr(cSingle_Ip(i),":")-1)
ifInstr(cTemp_IP,"*")<>0then“是宽范围
cStart_IP=left(cTemp_IP,instr(cTemp_IP,"*")-1)
ifleft(cInput_Ip,len(cStart_IP))=cStart_IPthen
CheckIp=false
exitfunction
endif
endif
ifInstr(cTemp_IP,"-")=0then
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)
endif
ifIp2Str(cInput_Ip)>=Ip2Str(cStart_IP)andIp2Str(cInput_Ip)<=Ip2Str(cEnd_Ip)then
CheckIp=false
exitfunction
endif
elseifInstr(cSingle_Ip(i),"ALLOW")<>0then“允许
cTemp_IP=left(cSingle_Ip(i),instr(cSingle_Ip(i),":")-1)
ifInstr(cTemp_IP,"*")<>0then“是宽范围
cStart_IP=left(cTemp_IP,instr(cTemp_IP,"*")-1)
ifleft(cInput_Ip,len(cStart_IP))=cStart_IPthen
CheckIp=true
endif
endif
ifInstr(cTemp_IP,"-")=0then
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)
endif
ifIp2Str(cInput_Ip)>=Ip2Str(cStart_IP)andIp2Str(cInput_Ip)<=Ip2Str(cEnd_Ip)then
CheckIp=true