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f316cce | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | "use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CIDR = void 0;
exports.parseIp = parseIp;
exports.parseCIDR = parseCIDR;
exports.isIPInNonPublicRange = isIPInNonPublicRange;
const net_1 = require("net");
function parseIp(ip) {
if ((0, net_1.isIPv4)(ip)) {
const [a, b, c, d] = ip.split('.').map(Number);
const buf = Buffer.alloc(4);
buf.writeUInt8(a, 0);
buf.writeUInt8(b, 1);
buf.writeUInt8(c, 2);
buf.writeUInt8(d, 3);
return buf;
}
if ((0, net_1.isIPv6)(ip)) {
if (ip.includes('.')) {
const parts = ip.split(':');
const ipv4Part = parts.pop();
if (!ipv4Part)
throw new Error('Invalid IPv6 address');
const ipv4Bytes = parseIp(ipv4Part);
parts.push('0');
const ipv6Bytes = parseIp(parts.join(':'));
ipv6Bytes.writeUInt32BE(ipv4Bytes.readUInt32BE(0), 12);
return ipv6Bytes;
}
const buf = Buffer.alloc(16);
// Expand :: notation
let expanded = ip;
if (ip.includes('::')) {
const sides = ip.split('::');
const left = sides[0] ? sides[0].split(':') : [];
const right = sides[1] ? sides[1].split(':') : [];
const middle = Array(8 - left.length - right.length).fill('0');
expanded = [...left, ...middle, ...right].join(':');
}
// Convert to buffer
const parts = expanded.split(':');
let offset = 0;
for (const part of parts) {
buf.writeUInt16BE(parseInt(part, 16), offset);
offset += 2;
}
return buf;
}
throw new Error('Invalid IP address');
}
function parseCIDR(cidr) {
const [ip, prefixTxt] = cidr.split('/');
const buf = parseIp(ip);
const maskBuf = Buffer.alloc(buf.byteLength, 0xff);
const prefixBits = parseInt(prefixTxt);
let offsetBits = 0;
while (offsetBits < (buf.byteLength * 8)) {
if (offsetBits <= (prefixBits - 8)) {
offsetBits += 8;
continue;
}
const bitsRemain = prefixBits - offsetBits;
const byteOffset = Math.floor(offsetBits / 8);
if (bitsRemain > 0) {
const theByte = buf[byteOffset];
const mask = 0xff << (8 - bitsRemain);
maskBuf[byteOffset] = mask;
buf[byteOffset] = theByte & mask;
offsetBits += 8;
continue;
}
;
buf[byteOffset] = 0;
maskBuf[byteOffset] = 0;
offsetBits += 8;
}
return [buf, maskBuf];
}
class CIDR {
constructor(cidr) {
this.text = cidr;
[this.buff, this.mask] = parseCIDR(cidr);
}
toString() {
return this.text;
}
get family() {
return this.buff.byteLength === 4 ? 4 : 6;
}
test(ip) {
const parsedIp = typeof ip === 'string' ? parseIp(ip) : ip;
if (parsedIp.byteLength !== this.buff.byteLength) {
return false;
}
for (const i of Array(this.buff.byteLength).keys()) {
const t = parsedIp[i];
const m = this.mask[i];
if (m === 0) {
return true;
}
const r = this.buff[i];
if ((t & m) !== r) {
return false;
}
}
return true;
}
}
exports.CIDR = CIDR;
const nonPublicNetworks4 = [
'10.0.0.0/8',
'172.16.0.0/12',
'192.168.0.0/16',
'127.0.0.0/8',
'255.255.255.255/32',
'169.254.0.0/16',
'224.0.0.0/4',
'100.64.0.0/10',
'0.0.0.0/32',
];
const nonPublicNetworks6 = [
'fc00::/7',
'fe80::/10',
'ff00::/8',
'::127.0.0.0/104',
'::/128',
];
const nonPublicCIDRs = [...nonPublicNetworks4, ...nonPublicNetworks6].map(cidr => new CIDR(cidr));
function isIPInNonPublicRange(ip) {
const parsed = parseIp(ip);
for (const cidr of nonPublicCIDRs) {
if (cidr.test(parsed)) {
return true;
}
}
return false;
}
//# sourceMappingURL=ip.js.map |