ipv4，ipv6起止地址判断，网段判断

一、ipv4

function checkIp(ip, range, mask){

var rangeArr = range.split(".");

var maskArr = mask.split(".");

var ipArr = ip.split(".");

var flag = true;

if(ipArr[3] == 0 || ipArr[3] == 255){

return false;

}

for(var i=0; i<4; i++){

if((rangeArr[i] & maskArr[i]) != (ipArr[i] & maskArr[i])){

flag = false;

break;

}

}

return flag;

}

function getIpNum(ip){

var ipArr = ip.split(".");

return parseInt(ipArr[0]*255*255*255+ipArr[1]*255*255+ipArr[2]*255+ipArr[3]);

}

二，ipv6

//转换成完全的ipv6地址

function convert2CompleteIpV6(ip){

var ipV6 = ip;

var index = ip.indexOf("::");

if(index > 0){

var size = 8-(ip.split(":").length-1);

var tmp = "";

for(var i = 0; i < size; i++){

tmp += ":0000";

}

tmp += ":";

ipV6 = ip.replace("::",tmp);

}else if(index == 0){

if(ip == "::"){

ipV6 = "0000:0000:0000:0000:0000:0000:0000:0000";

}else{

ipV6 = ip.replace("::","0000:0000:0000:0000:0000:0000:0000:");

}

}

return ipV6;

}

//将二进制掩码转换成16进制

function bin_to_hex(mask) {

var hex_array = [{key:0,val:"0000"},{key:1,val:"0001"},{key:2,val:"0010"},{key:3,val:"0011"},{key:4,val:"0100"},{key:5,val:"0101"},{key:6,val:"0110"},{key:7,val:"0111"},

{key:8,val:"1000"},{key:9,val:"1001"},{key:'A',val:"1010"},{key:'B',val:"1011"},{key:'C',val:"1100"},{key:'D',val:"1101"},{key:'E',val:"1110"},{key:'F',val:"1111"}]

var value = ''

var list = []

var str = '';

if(parseInt(mask) != 0){

for(var i = 0; i < parseInt(mask); i++){

str += "1";

}

for(var i = 0; i < (128 - parseInt(mask)); i++){

str += "0";

}

}

while (str.length > 4) {

list.push(str.substring(0, 4))

str = str.substring(4);

}

list.push(str)

for(var i = 0; i < list.length; i++){

for(var j = 0; j < hex_array.length; j++){

if(list[i] == hex_array[j].val){

value = value.concat(hex_array[j].key)

break

}

}

}

var valArr = []

while (value.length > 4) {

valArr.push(value.substring(0, 4))

value = value.substring(4);

}

valArr.push(value);

return valArr;

}

//判断两个IPv6地址大小

function compareIPv6(addr1,addr2){

var addr1 = convert2CompleteIpV6(addr1).split(":");

var addr2 = convert2CompleteIpV6(addr2).split(":");

for(var i = 0; i < 8; i++){

if(parseInt(addr1[i], 16) != parseInt(addr2[i], 16)){

if(parseInt(addr1[i], 16) > parseInt(addr2[i], 16)){//addr1 > addr2

return "1";

}else if(parseInt(addr1[i], 16) < parseInt(addr2[i], 16)){//addr1 < addr2

return "2";

}

}

}

return "3";//地址相等

}

//比较是否同一网段

function checkIpv6 (ip, mask, range) {

var flag = true;

var mask = bin_to_hex(mask);

var ipv6 = convert2CompleteIpV6(ip).split(":");

var range = convert2CompleteIpV6(range).split(":");

 

for(var i = 0; i < 8; i++){

if((parseInt(ipv6[i], 16) & parseInt(mask[i], 16)) != (parseInt(range[i], 16) & parseInt(mask[i], 16))){

flag = false;

break;

}

}

return flag;

}