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https://github.com/shimataro/ssh-key-action.git
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* first action! (#1)
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416
node_modules/ip/lib/ip.js
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vendored
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416
node_modules/ip/lib/ip.js
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'use strict';
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var ip = exports;
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var Buffer = require('buffer').Buffer;
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var os = require('os');
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ip.toBuffer = function(ip, buff, offset) {
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offset = ~~offset;
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var result;
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if (this.isV4Format(ip)) {
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result = buff || new Buffer(offset + 4);
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ip.split(/\./g).map(function(byte) {
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result[offset++] = parseInt(byte, 10) & 0xff;
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});
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} else if (this.isV6Format(ip)) {
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var sections = ip.split(':', 8);
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var i;
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for (i = 0; i < sections.length; i++) {
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var isv4 = this.isV4Format(sections[i]);
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var v4Buffer;
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if (isv4) {
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v4Buffer = this.toBuffer(sections[i]);
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sections[i] = v4Buffer.slice(0, 2).toString('hex');
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}
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if (v4Buffer && ++i < 8) {
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sections.splice(i, 0, v4Buffer.slice(2, 4).toString('hex'));
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}
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}
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if (sections[0] === '') {
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while (sections.length < 8) sections.unshift('0');
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} else if (sections[sections.length - 1] === '') {
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while (sections.length < 8) sections.push('0');
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} else if (sections.length < 8) {
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for (i = 0; i < sections.length && sections[i] !== ''; i++);
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var argv = [ i, 1 ];
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for (i = 9 - sections.length; i > 0; i--) {
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argv.push('0');
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}
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sections.splice.apply(sections, argv);
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}
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result = buff || new Buffer(offset + 16);
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for (i = 0; i < sections.length; i++) {
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var word = parseInt(sections[i], 16);
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result[offset++] = (word >> 8) & 0xff;
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result[offset++] = word & 0xff;
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}
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}
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if (!result) {
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throw Error('Invalid ip address: ' + ip);
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}
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return result;
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};
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ip.toString = function(buff, offset, length) {
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offset = ~~offset;
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length = length || (buff.length - offset);
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var result = [];
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if (length === 4) {
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// IPv4
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for (var i = 0; i < length; i++) {
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result.push(buff[offset + i]);
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}
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result = result.join('.');
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} else if (length === 16) {
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// IPv6
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for (var i = 0; i < length; i += 2) {
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result.push(buff.readUInt16BE(offset + i).toString(16));
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}
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result = result.join(':');
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result = result.replace(/(^|:)0(:0)*:0(:|$)/, '$1::$3');
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result = result.replace(/:{3,4}/, '::');
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}
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return result;
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};
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var ipv4Regex = /^(\d{1,3}\.){3,3}\d{1,3}$/;
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var ipv6Regex =
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/^(::)?(((\d{1,3}\.){3}(\d{1,3}){1})?([0-9a-f]){0,4}:{0,2}){1,8}(::)?$/i;
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ip.isV4Format = function(ip) {
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return ipv4Regex.test(ip);
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};
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ip.isV6Format = function(ip) {
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return ipv6Regex.test(ip);
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};
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function _normalizeFamily(family) {
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return family ? family.toLowerCase() : 'ipv4';
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}
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ip.fromPrefixLen = function(prefixlen, family) {
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if (prefixlen > 32) {
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family = 'ipv6';
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} else {
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family = _normalizeFamily(family);
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}
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var len = 4;
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if (family === 'ipv6') {
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len = 16;
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}
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var buff = new Buffer(len);
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for (var i = 0, n = buff.length; i < n; ++i) {
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var bits = 8;
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if (prefixlen < 8) {
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bits = prefixlen;
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}
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prefixlen -= bits;
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buff[i] = ~(0xff >> bits) & 0xff;
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}
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return ip.toString(buff);
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};
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ip.mask = function(addr, mask) {
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addr = ip.toBuffer(addr);
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mask = ip.toBuffer(mask);
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var result = new Buffer(Math.max(addr.length, mask.length));
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var i = 0;
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// Same protocol - do bitwise and
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if (addr.length === mask.length) {
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for (i = 0; i < addr.length; i++) {
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result[i] = addr[i] & mask[i];
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}
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} else if (mask.length === 4) {
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// IPv6 address and IPv4 mask
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// (Mask low bits)
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for (i = 0; i < mask.length; i++) {
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result[i] = addr[addr.length - 4 + i] & mask[i];
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}
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} else {
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// IPv6 mask and IPv4 addr
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for (var i = 0; i < result.length - 6; i++) {
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result[i] = 0;
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}
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// ::ffff:ipv4
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result[10] = 0xff;
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result[11] = 0xff;
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for (i = 0; i < addr.length; i++) {
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result[i + 12] = addr[i] & mask[i + 12];
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}
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i = i + 12;
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}
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for (; i < result.length; i++)
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result[i] = 0;
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return ip.toString(result);
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};
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ip.cidr = function(cidrString) {
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var cidrParts = cidrString.split('/');
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var addr = cidrParts[0];
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if (cidrParts.length !== 2)
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throw new Error('invalid CIDR subnet: ' + addr);
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var mask = ip.fromPrefixLen(parseInt(cidrParts[1], 10));
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return ip.mask(addr, mask);
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};
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ip.subnet = function(addr, mask) {
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var networkAddress = ip.toLong(ip.mask(addr, mask));
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// Calculate the mask's length.
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var maskBuffer = ip.toBuffer(mask);
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var maskLength = 0;
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for (var i = 0; i < maskBuffer.length; i++) {
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if (maskBuffer[i] === 0xff) {
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maskLength += 8;
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} else {
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var octet = maskBuffer[i] & 0xff;
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while (octet) {
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octet = (octet << 1) & 0xff;
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maskLength++;
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}
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}
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}
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var numberOfAddresses = Math.pow(2, 32 - maskLength);
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return {
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networkAddress: ip.fromLong(networkAddress),
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firstAddress: numberOfAddresses <= 2 ?
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ip.fromLong(networkAddress) :
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ip.fromLong(networkAddress + 1),
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lastAddress: numberOfAddresses <= 2 ?
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ip.fromLong(networkAddress + numberOfAddresses - 1) :
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ip.fromLong(networkAddress + numberOfAddresses - 2),
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broadcastAddress: ip.fromLong(networkAddress + numberOfAddresses - 1),
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subnetMask: mask,
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subnetMaskLength: maskLength,
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numHosts: numberOfAddresses <= 2 ?
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numberOfAddresses : numberOfAddresses - 2,
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length: numberOfAddresses,
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contains: function(other) {
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return networkAddress === ip.toLong(ip.mask(other, mask));
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}
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};
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};
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ip.cidrSubnet = function(cidrString) {
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var cidrParts = cidrString.split('/');
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var addr = cidrParts[0];
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if (cidrParts.length !== 2)
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throw new Error('invalid CIDR subnet: ' + addr);
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var mask = ip.fromPrefixLen(parseInt(cidrParts[1], 10));
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return ip.subnet(addr, mask);
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};
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ip.not = function(addr) {
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var buff = ip.toBuffer(addr);
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for (var i = 0; i < buff.length; i++) {
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buff[i] = 0xff ^ buff[i];
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}
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return ip.toString(buff);
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};
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ip.or = function(a, b) {
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a = ip.toBuffer(a);
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b = ip.toBuffer(b);
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// same protocol
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if (a.length === b.length) {
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for (var i = 0; i < a.length; ++i) {
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a[i] |= b[i];
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}
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return ip.toString(a);
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// mixed protocols
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} else {
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var buff = a;
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var other = b;
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if (b.length > a.length) {
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buff = b;
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other = a;
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}
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var offset = buff.length - other.length;
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for (var i = offset; i < buff.length; ++i) {
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buff[i] |= other[i - offset];
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}
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return ip.toString(buff);
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}
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};
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ip.isEqual = function(a, b) {
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a = ip.toBuffer(a);
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b = ip.toBuffer(b);
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// Same protocol
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if (a.length === b.length) {
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for (var i = 0; i < a.length; i++) {
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if (a[i] !== b[i]) return false;
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}
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return true;
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}
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// Swap
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if (b.length === 4) {
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var t = b;
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b = a;
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a = t;
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}
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// a - IPv4, b - IPv6
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for (var i = 0; i < 10; i++) {
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if (b[i] !== 0) return false;
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}
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var word = b.readUInt16BE(10);
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if (word !== 0 && word !== 0xffff) return false;
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for (var i = 0; i < 4; i++) {
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if (a[i] !== b[i + 12]) return false;
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}
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return true;
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};
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ip.isPrivate = function(addr) {
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return /^(::f{4}:)?10\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/i
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.test(addr) ||
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/^(::f{4}:)?192\.168\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
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/^(::f{4}:)?172\.(1[6-9]|2\d|30|31)\.([0-9]{1,3})\.([0-9]{1,3})$/i
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.test(addr) ||
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/^(::f{4}:)?127\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
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/^(::f{4}:)?169\.254\.([0-9]{1,3})\.([0-9]{1,3})$/i.test(addr) ||
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/^f[cd][0-9a-f]{2}:/i.test(addr) ||
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/^fe80:/i.test(addr) ||
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/^::1$/.test(addr) ||
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/^::$/.test(addr);
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};
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ip.isPublic = function(addr) {
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return !ip.isPrivate(addr);
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};
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ip.isLoopback = function(addr) {
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return /^(::f{4}:)?127\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})/
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.test(addr) ||
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/^fe80::1$/.test(addr) ||
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/^::1$/.test(addr) ||
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/^::$/.test(addr);
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};
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ip.loopback = function(family) {
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//
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// Default to `ipv4`
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//
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family = _normalizeFamily(family);
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if (family !== 'ipv4' && family !== 'ipv6') {
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throw new Error('family must be ipv4 or ipv6');
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}
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return family === 'ipv4' ? '127.0.0.1' : 'fe80::1';
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};
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//
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// ### function address (name, family)
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// #### @name {string|'public'|'private'} **Optional** Name or security
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// of the network interface.
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// #### @family {ipv4|ipv6} **Optional** IP family of the address (defaults
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// to ipv4).
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//
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// Returns the address for the network interface on the current system with
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// the specified `name`:
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// * String: First `family` address of the interface.
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// If not found see `undefined`.
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// * 'public': the first public ip address of family.
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// * 'private': the first private ip address of family.
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// * undefined: First address with `ipv4` or loopback address `127.0.0.1`.
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//
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ip.address = function(name, family) {
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var interfaces = os.networkInterfaces();
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var all;
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//
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// Default to `ipv4`
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//
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family = _normalizeFamily(family);
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//
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// If a specific network interface has been named,
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// return the address.
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//
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if (name && name !== 'private' && name !== 'public') {
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var res = interfaces[name].filter(function(details) {
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var itemFamily = details.family.toLowerCase();
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return itemFamily === family;
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});
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if (res.length === 0)
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return undefined;
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return res[0].address;
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}
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var all = Object.keys(interfaces).map(function (nic) {
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//
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// Note: name will only be `public` or `private`
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// when this is called.
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//
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var addresses = interfaces[nic].filter(function (details) {
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details.family = details.family.toLowerCase();
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if (details.family !== family || ip.isLoopback(details.address)) {
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return false;
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} else if (!name) {
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return true;
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}
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return name === 'public' ? ip.isPrivate(details.address) :
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ip.isPublic(details.address);
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});
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return addresses.length ? addresses[0].address : undefined;
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}).filter(Boolean);
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return !all.length ? ip.loopback(family) : all[0];
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};
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ip.toLong = function(ip) {
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var ipl = 0;
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ip.split('.').forEach(function(octet) {
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ipl <<= 8;
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ipl += parseInt(octet);
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});
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return(ipl >>> 0);
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};
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ip.fromLong = function(ipl) {
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return ((ipl >>> 24) + '.' +
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(ipl >> 16 & 255) + '.' +
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(ipl >> 8 & 255) + '.' +
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(ipl & 255) );
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};
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Reference in a new issue