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myNetworks.js
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myNetworks.js
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'use strict';
// V 1.5 May 2020
const A = require('./fjadapter-core');
const assert = require('assert'),
dgram = require('dgram'),
arp = require('node-arp'),
ping = require('ping'),
dns = require('dns'),
os = require('os'),
net = require('net'),
// fs = require('fs'),
cp = require('child_process'),
stream = require('stream'),
EventEmitter = require('events').EventEmitter;
//const macdb = require('./lib/vendors.json');
const macdb1 = require('./lib/vendors.json');
class ReadLineStream extends stream.Transform {
constructor(options) {
super(options);
this.lineBuffer = '';
// use objectMode to stop the output from being buffered
// which re-concatanates the lines, just without newlines.
this._readableState.objectMode = true;
// take the source's encoding if we don't have one
this.on('pipe', function (src) {
if (!this.encoding) {
this.encoding = src._readableState.encoding;
}
});
}
_transform(chunk, encoding, done) {
// decode binary chunks as UTF-8
if (Buffer.isBuffer(chunk)) {
if (!encoding || encoding == 'buffer') encoding = 'utf8';
chunk = chunk.toString(encoding);
}
this.lineBuffer += chunk;
const lines = this.lineBuffer.match(/.*?(?:\r\n|\r|\n)|.*?$/g);
while (lines.length > 1)
this.push(lines.shift());
this.lineBuffer = lines[0] || '';
done();
}
_flush(done) {
if (this.lineBuffer) {
this.push(this.lineBuffer);
this.lineBuffer = '';
}
done();
}
}
const checkPath = new A.CacheP(async (item) => await A.exec('which ' + item).catch(() => item));
class ScanCmd extends EventEmitter {
constructor(args, options, pid) {
super();
this._stdout = null;
this._stop = false;
this._args = args;
this._pid = pid;
if (typeof args === 'string')
this._args = args.split(/[\s\n]+/);
options = options || {};
this._options = Object.assign({
killSignal: 'SIGINT',
timeout: 0,
spawnOptions: {
// detachment and ignored stdin are the key here:
detached: true,
stdio: ['ignore', 'pipe', 'pipe']
}
}, options);
this._cmd = null;
this._linepart = '';
this._timeout = null;
this._matches = {};
return this;
}
static runCmd(cmd, match, opt) {
if (typeof match == 'object') {
opt = match;
} else opt = opt || {};
if (Array.isArray(match))
opt.match = match;
async function checkInit(that) {
const x = await checkPath.cacheItem(that._args[0]);
that._args[0] = x.trim();
that.init();
return null;
}
return new Promise((res, rej) => {
const ret = [];
const pid = ++ScanCmd._cnt & 0xfffffff;
let resolved = false;
const proc = new ScanCmd(cmd, opt, pid);
async function finish(how, arg) {
if (resolved) return res(ret);
delete ScanCmd._all[pid];
resolved = true;
// proc.removeAllListeners();
await A.wait(1);
return how(arg);
// proc.removeAllListeners();
}
checkInit(proc);
ScanCmd._all[pid] = proc;
A.Df('started #%s %s', pid, cmd);
proc.on('line', line => {
// A.Df("proc raised new Line in %s", cmd);
return ret && ret.push(line);
});
proc.on('error', err => {
// A.Df('proc raised error %j', err);
finish(rej, err);
});
proc.on('exit', _code => {
// A.Df("proc raised exit: %j", code);
// code ? finish(rej, code) :
finish(res, ret);
});
});
}
static stopAll() {
for (const x of Object.keys(ScanCmd._all)) {
ScanCmd._all[x].stop();
delete ScanCmd._all[x];
}
}
init() {
const self = this;
this._cmd = null;
this._matches = {};
function match(data) {
// A.Df('Data found for #%d was %s', self._pid, data);
if (self._options.match) {
let m = data.match(self._options.match[0]);
if (m) {
const r = {
by: self._options.match[1]
};
m = m.slice(1);
const ma = m[0];
if (!self._matches[ma]) {
for (let x = 0; x < m.length; x++)
r[self._options.match[x + 2]] = m[x];
if (r.address)
r.vendor = Network.getMacV(r.address);
self.emit('line', r);
// A.N(() => self.emit('line', r));
self._matches[ma] = m;
}
}
} else
self.emit('line', data.trim());
// A.N(() => self.emit('line', data.trim()));
}
function error(data) {
setImmediate(() => {
self.emit('error', data);
A.Df('ScanCmd err: %s %O', self._args.join(', '), data);
if (self._cmd && !self._stop)
self.stop();
});
}
// try {
this._cmd = cp.spawn(this._args[0], this._args.slice(1), this._options.spawnOptions);
// A.I(`started ${this._args[0]} with ${this._args.slice(1)}`);
// } catch (e) {
// A.E(`spawn arror ${e}`);
// this._cmd = null;
// }
if (this._cmd) {
if (this._options.timeout > 0)
this._timeout = setTimeout(this.kill.bind(this), this._options.timeout);
else this._timeout = null;
this._cmd.unref();
// this._cmd.kill('SIGTTIN');
self._stdout = self._cmd.stdout.pipe(new ReadLineStream());
// self._stderr = self._cmd.stderr.pipe(new ReadLineStream());
// self._cmd.stdout._readableState.highWaterMark = self._cmd.stderr._readableState.highWaterMark = 16;
// self._cmd.stdout._readableState.objectMode = self._cmd.stderr._readableState.objectMode = true;
// self._cmd.stdout._linepart = self._cmd.stderr._linepart = '';
// A.If('stdout: %O', self._stdout);
self._stdout
// .on('close', () => A.I('stdout_close'))
// self._cmd.stdout.on('close', () => A.I('stdout_close'))
// .on('end', () => A.I('stdout_end'))
// .on('error', err => error(err))
// .on('readable', () => readlines(self._cmd.stdout))
// .on('data', data => readlines(self._cmd.stdout, data));
// .on('data', data => A.If('stdout_data_line: %s', data.trim()));
.on('data', data => setImmediate(() => match(data)));
// self._cmd.stdout.on('data', data => A.If('stdout data: %s',data));
// self._cmd.stderr.on('readable', () => readlines(self._cmd.stderr));
// self._stderr.on('data', data => readlines(self._cmd.stderr, data));
// self._cmd.stderr.on('data', data => error(data.toString().trim()));
self._cmd
// .on('close', () => self.cleanUp())
.on('disconnect', () => A.If('cmd_disconnect %O', self._args))
.on('error', err => error(err))
.on('exit', (code) => {
// A.D(`${self._args} exit code: ${code}`);
self.cleanUp();
self.emit('exit', code);
// if (!self._stop && !self._single)
// self.init();
});
// self._cmd.stdout.resume();
// self._cmd.stderr.resume();
// A.I(`started ${this._args} resulting in ${this._cmd}`);
} else A.W(`Could not start ${this._args}`);
return this._cmd;
}
stop() {
this._stop = true;
this.kill();
}
cleanUp() {
this._stop = true;
if (this._timeout) {
clearTimeout(this._timeout);
this._timeout = null;
}
// setImmediate(() => {
if (this._cmd) {
/*
this._cmd.removeAllListeners();
if (this._cmd.stdout)
this._cmd.stdout.removeAllListeners();
if (this._cmd.stderr)
this._cmd.stderr.removeAllListeners();
*/
this._cmd = null;
this._stdout = this._stderr = null;
}
// this.emit('exit', 0);
// }, 100);
}
kill() {
if (this._cmd && !this._cmd.killed && !this._stop) {
// A.Df('Kill with %s #%d:%s', this._options.killSignal, this._pid, this._args.join(","));
if (this._options.killSignal === '^C')
this._cmd.stdin.write('\0x03');
else
this._cmd.kill(this._options.killSignal);
// A.wait(1).then(() => this.cleanUp());
}
}
}
ScanCmd._cnt = 0;
ScanCmd._all = {};
class Bluetooth extends EventEmitter {
constructor() {
super();
this._nobleRunning = false;
this._noble = null;
this._btid = -1;
this._len = 25000;
this._nbt = null;
this._device = null;
this._scan = null;
this._doHci = null;
this._doL2p = null;
}
get hasNoble() {
return this._noble;
}
get device() {
return this._device;
}
get nbt() {
return this._nbt;
}
listPairedDevices() {
if (!this._device)
return Promise.resolve([]);
return new Promise(res => this._device.listPairedDevices(ret => res(ret)));
}
async startScan(macs) {
async function scanmacs(that) {
for (const mac of macs) {
await A.wait(1);
try {
const res = await ScanCmd.runCmd(that._dol2ping + mac, {
match: [/^.*\s+((?:[\dA-F]{2}:){5}[\dA-F]{2})\s+from\s+.*$/im, 'l2ping', 'address'],
timeout: 4000
}).catch(() => null);
if (res && res.length) {
const ret = res[0];
ret.address = ret.address.toLowerCase();
ret.btVendor = ret.vendor;
delete ret.vendor;
that.emit('found', ret);
}
} catch (e) {
// emptyfind ouit if connection refused can be used!
}
// A.Df('L2Ping returned for mac%s = %O', mac, res);
}
}
async function scanhci(that) {
const res = await ScanCmd.runCmd(`hcitool -i ${that._doHci} lescan --duplicates`, {
match: [/^\s*((?:[\dA-F]{2}:){5}[\dA-F]{2})\s+(.*?)\s*$/im, 'lescan', 'address', 'btName'],
timeout: that._len
}).catch(() => null);
// A.Df("lescan returned: %O", res);
if (res)
for (const item of res) {
await A.wait(0);
item.btVendor = item.vendor;
item.address = item.address.toLowerCase();
delete item.vendor;
that.emit('found', item);
}
}
/*
async function scanoldhci(that) {
const res = await ScanCmd.runCmd(`hcitool -i ${that._doHci} scan`, {
match: [/^\s*((?:[\dA-F]{2}:){5}[\dA-F]{2})\s+(.*?)\s*$/im, 'scan', 'address', 'btName'],
timeout: Math.floor(that._len / 2),
}).catch(() => null);
// A.Df("lescan returned: %O", res);
if (res)
for (const item of res) {
await A.wait(0);
item.btVendor = item.vendor;
item.address = item.address.toLowerCase();
delete item.vendor;
that.emit('found', item);
}
}
*/
// async function scannodebt(that) {
// try {
// const x = A.Ptime(that._device.scan());
// if (x < 1000) await that._device.scan();
// } catch (e) {
// //empty
// }
// }
if (this._device && this._scan)
return A.W(`BT already scanning!`);
const scans = [];
this._scan = true;
// A.I(`start scanning BT!`); // REM
if (this._noble) {
// A.D("startScan prepare noble");
scans.push(Promise.resolve(this.startNoble()));
}
if (this._doHci) {
// A.D("startScan prepare doHci");
await this.resetHci();
scans.push(scanhci(this));
} else if (!this._noble) A.D('Neither noble nor hcitool for BLE available!');
if (this._dol2ping && macs && macs.length) {
// A.D("startScan prepare noble");
scans.push(scanmacs(this));
}
// if (this._device && !this._dol2ping)
// scans.push(scannodebt(this));
if (!scans.length)
return A.Df('No BT scan because no entry available!');
// A.Df("startScan before Promise.all with %s", A.O(scans));
const res = await Promise.all(scans).catch(err => A.Wf('Scan Error: %O', err));
// A.Df("startScan returned Promise.All %j", res);
this._scan = false;
return res;
}
async resetHci() {
if (typeof this._doHci !== 'string')
return false;
// await ScanCmd.runCmd(A.f('hciconfig %s reset', this._doHci)).catch(A.pE);
// await A.wait(200);
let x = await ScanCmd.runCmd(A.f('hciconfig %s down', this._doHci)).catch(A.pE);
x = await A.wait(100);
x = await ScanCmd.runCmd(A.f('hciconfig %s up', this._doHci)).catch(A.pE);
x = await A.wait(100);
return x;
}
get scanTime() {
return this._len;
}
set scanTime(len) {
this._len = (isNaN(parseInt(len)) || !len || len < 0) ? 10000 : parseInt(len);
}
async init(options) {
const self = this;
const nid = 'NOBLE_HCI_DEVICE_ID';
options = Object.assign({
btid: -1,
scanTime: 25000,
doHci: false,
doL2p: false
}, options || {});
this._doL2p = options.doL2p;
this._doHci = options.doHci;
this._btid = isNaN(parseInt(options.btid)) ? -1 : parseInt(options.btid);
this.len = options.scanTime;
try {
const res = A.isLinuxApp('l2ping');
if (res)
this._dol2ping = 'l2ping ' + (this._btid < 0 ? '' : '-i hci' + this._btid) + ' -c 1 ';
} catch (e) {
// empty
}
if (this._dol2ping) A.I('Will use l2Ping for BT scans.');
else A.I('cannot search for bluetooth (non-BLE) devices!');
// else try {
// this._nbt = require('@frankjoke/node-bluetooth');
// this._device = new this._nbt.DeviceINQ();
// this._device.on('found', (address, name) => self.emit('found', {
// address: address,
// btName: name,
// btVendor: Network.getMacV(address),
// by: 'scan'
// }));
// A.I("found and will use 'node-bluetooth scan'");
// } catch (e) {
this._device = null;
// A.I('node-bluetooth not found!');
// }
if (this._doHci && await A.isLinuxApp('hcitool')) {
const res = await ScanCmd.runCmd('hcitool dev', [/^\s*(\S+)\s+((?:[\dA-F]{2}:){5}[\dA-F]{2})\s*$/im, 'dev', 'name', 'address']);
this._doHci = this._btid < 0 && res.length ?
res[0].name :
res.length && res.map(x => x.name == 'hci' + this._btid).length == 1 ?
'hci' + this._btid : 'hci0', () => 'hci0';
if (this._doHci) {
A.If('Will run hcitool-mode and not noble on device %s!', res);
await this.resetHci();
}
} else {
if (this._btid >= 0)
// eslint-disable-next-line no-process-env
process.env[nid] = this._btid;
if (!this._doHci) try {
this._noble = require('@abandonware/noble');
if (typeof this._noble.on !== 'function') {
// The following commit broke the default exported instance of noble:
// https://github.com/abandonware/noble/commit/b67eea246f719947fc45b1b52b856e61637a8a8e
this._noble = this._noble({ extended: false });
}
this._noble.on('stateChange', (state) => self.emit('stateChange', A.D(A.F('Noble State Change:', state), state)));
// this._noble.on('scanStart', () => A.D('Noble scan started'));
// this._noble.on('scanStop', () => A.D('Noble scan stopped'));
this._noble.on('discover', function (per) {
// if (isStopping)
// return res(stopNoble(idf));
const {
address,
advertisement,
rssi
} = per;
const btVendor = Network.getMacV(address);
// A.Df("-myNoble discovers %s, %j %s", address, advertisement, rssi, btVendor); // REM
if (per && address)
self.emit('found', {
address: address.toLowerCase(),
btName: (advertisement && advertisement.localName) ? advertisement.localName : 'N/A',
rssi,
btVendor,
by: 'noble'
});
});
// this._noble.stopScanning();
A.I("found and will use '@abandonware/noble'");
} catch (e) {
A.W(`Noble not available, Error: ${A.O(e)}`);
this._noble = null;
}
// this._l2cmd = `!sudo l2ping -i hci${btid} -c1 `;
if (!this._noble)
A.W('Neither hcitool nor noble available to scan Bluetooth!');
}
}
stopNoble() {
this._nobleRunning = null;
// A.I('Stop Noble'); // REM
if (this._noble)
this._noble.stopScanning();
// A.D('Noble stopped scanning now.');
}
async startNoble(len) {
const self = this;
if (!this._noble) return {};
// A.I("STart Noble"); // REM
if (this._nobleRunning)
this.stopNoble();
// this._noble
len = len || this._len;
for (let count = 20; count >= 0 && this._noble.state !== 'poweredOn'; count--)
await A.wait(100);
if (this._noble.state === 'poweredOn') {
this._nobleRunning = true;
try {
self._noble.startScanning();
return A.wait(len).then(() => self.stopNoble());
} catch (e) {
self._nobleRunning = false;
self.stopNoble();
}
}
return {};
// if (this._noble.state !== 'poweredOn') return Promise.reject('Noble not powered ON!');
}
async stop() {
this.stopNoble();
this._noble = null;
A.resolve(ScanCmd.stopAll());
}
}
class Dhcp extends EventEmitter {
constructor(addr) {
super();
this._addr = addr || '0.0.0.0';
this._listener = null;
this.init();
}
init(addr) {
addr = addr || this._addr;
try {
this._trybind('0.0.0.0');
} catch (e) {
A.Wf('could not bind to address %s dhcp port 67 because of %O!', e);
}
setTimeout(self => {
self.emit('listenState', !!self._listener);
if (!self._listener) {
A.Wf(`Could not bind to any dhcp listener address %s:67!`, addr);
}
}, 1000, this);
}
close() {
if (this._listener) {
this.emit('listenState', false);
this.emit('close', true);
this._listener.close();
this._listener.removeAllListeners();
}
this._listener = null;
}
_trybind(addr) {
const self = this;
function parseUdp(msg) {
function trimNulls(str) {
const idx = str.indexOf('\u0000');
return (idx === -1) ? str : str.substr(0, idx);
}
function readIpRaw(msg, offset) {
// console.log(`Read IpRaw bl = ${msg.length} offset = ${offset}`)
if (msg.readUInt8(offset) === 0)
return undefined;
return '' +
msg.readUInt8(offset++) + '.' +
msg.readUInt8(offset++) + '.' +
msg.readUInt8(offset++) + '.' +
msg.readUInt8(offset++);
}
function readIp(msg, offset, obj, name) {
// console.log(`Read IP = ${msg.length} offset = ${offset}, name = ${name} `)
const len = msg.readUInt8(offset++);
assert.strictEqual(len, 4);
obj[name] = readIpRaw(msg, offset);
return offset + len;
}
function readString(msg, offset, obj, name) {
// console.log(`Read String bl = ${msg.length} offset = ${offset}, name = ${name} `)
const len = msg.readUInt8(offset++);
obj[name] = msg.toString('ascii', offset, offset + len);
offset += len;
return offset;
}
function readAddressRaw(msg, offset, len) {
let addr = '';
// console.log(`Address Raw bl = ${msg.length} offset = ${offset}, len = ${len} `)
while (len-- > 0) {
let b = 0;
try {
b = msg.readUInt8(offset++);
} catch (e) {
A.D(`buffer length = ${msg.length} offset = ${offset}, len = ${len}, err = ${e} `);
}
addr += (b + 0x100).toString(16).substr(-2);
if (len > 0) {
addr += ':';
}
}
return addr;
}
function createHardwareAddress(t, a) {
return Object.freeze({
type: t,
address: a
});
}
const BOOTPMessageType = ['NA', 'BOOTPREQUEST', 'BOOTPREPLY'];
const ARPHardwareType = ['NA', 'HW_ETHERNET', 'HW_EXPERIMENTAL_ETHERNET', 'HW_AMATEUR_RADIO_AX_25', 'HW_PROTEON_TOKEN_RING', 'HW_CHAOS', 'HW_IEEE_802_NETWORKS', 'HW_ARCNET', 'HW_HYPERCHANNEL', 'HW_LANSTAR'];
const DHCPMessageType = ['NA', 'DHCPDISCOVER', 'DHCPOFFER', 'DHCPREQUEST', 'DHCPDECLINE', 'DHCPACK', 'DHCPNAK', 'DHCPRELEASE', 'DHCPINFORM'];
const p = {
op: BOOTPMessageType[msg.readUInt8(0)],
// htype is combined into chaddr field object
hlen: msg.readUInt8(2),
hops: msg.readUInt8(3),
xid: msg.readUInt32BE(4),
secs: msg.readUInt16BE(8),
flags: msg.readUInt16BE(10),
ciaddr: readIpRaw(msg, 12),
yiaddr: readIpRaw(msg, 16),
siaddr: readIpRaw(msg, 20),
giaddr: readIpRaw(msg, 24),
chaddr: createHardwareAddress(
ARPHardwareType[msg.readUInt8(1)],
readAddressRaw(msg, 28, msg.readUInt8(2))),
sname: trimNulls(msg.toString('ascii', 44, 108)),
file: trimNulls(msg.toString('ascii', 108, 236)),
magic: msg.readUInt32BE(236),
options: {}
};
let offset = 240;
let code = 0;
while (code !== 255 && offset < msg.length) {
code = msg.readUInt8(offset++);
let len;
switch (code) {
case 0:
// eslint-disable-next-line no-continue
continue;
case 255:
break; // end
case 12: { // hostName
offset = readString(msg, offset, p.options, 'hostName');
break;
}
case 50: { // requestedIpAddress
offset = readIp(msg, offset, p.options, 'requestedIpAddress');
break;
}
case 53: { // dhcpMessageType
len = msg.readUInt8(offset++);
assert.strictEqual(len, 1);
const mtype = msg.readUInt8(offset++);
assert.ok(mtype >= 1);
assert.ok(mtype <= 8);
p.options.dhcpMessageType = DHCPMessageType[mtype];
break;
}
case 58: { // renewalTimeValue
len = msg.readUInt8(offset++);
assert.strictEqual(len, 4);
p.options.renewalTimeValue = msg.readUInt32BE(offset);
offset += len;
break;
}
case 59: { // rebindingTimeValue
len = msg.readUInt8(offset++);
assert.strictEqual(len, 4);
p.options.rebindingTimeValue = msg.readUInt32BE(offset);
offset += len;
break;
}
case 61: { // clientIdentifier
len = msg.readUInt8(offset++);
p.options.clientIdentifier =
createHardwareAddress(
ARPHardwareType[msg.readUInt8(offset)],
readAddressRaw(msg, offset + 1, len - 1));
offset += len;
break;
}
case 81: { // fullyQualifiedDomainName
len = msg.readUInt8(offset++);
p.options.fullyQualifiedDomainName = {
flags: msg.readUInt8(offset),
name: msg.toString('ascii', offset + 3, offset + len)
};
offset += len;
break;
}
default: {
len = msg.readUInt8(offset++);
//console.log('Unhandled DHCP option ' + code + '/' + len + 'b');
offset += len;
break;
}
}
}
return p;
}
try {
this._listener = dgram.createSocket({
type: 'udp4',
reuseAddr: true,
});
this._listener.on('close', err => {
// A.Wf('Dhcp Error %O',err);
self.emit('close', err);
self.emit('listenState', false);
self._listener = false;
});
this._listener.on('error', err => {
// A.Wf('Dhcp Error %O',err);
self.emit('error', err);
self.close();
});
// this._listener.on('error', e => A.W(`dhcp error on address ` + A.F(addr, e)));
this._listener.on('message', (msg, rinfo) => {
let data;
try {
data = parseUdp(msg, rinfo);
// A.I(A.F('data udp: ', data));
} catch (e) {
return A.W(A.F('error in dhcp message ' + e));
}
// A.D('dhcp triggered: ' + A.O(data.options));
if (data && data.op === 'BOOTPREQUEST' && data.options.dhcpMessageType === 'DHCPREQUEST' && !data.ciaddr && data.options.clientIdentifier) {
const req = {
hostName: data.options.hostName,
type: data.options.clientIdentifier.type,
macAddress: data.options.clientIdentifier.address,
ipAddress: data.options.requestedIpAddress
};
self.emit('request', req);
}
});
if (this._listener) {
// try {
this._listener.bind({
address: addr,
port: 67,
exclusive: false
}, () => A.If('Connected with %O for DHCP Scan', addr));
/*
} catch (e) {
this._listener.removeAllListeners();
this._listener = null;
A.W('could not bind to address: ' + addr + ', had error: ' + A.O(e));
}
*/
}
} catch (e) {
A.Wf(`could not start dhcp listener! Adapter will not be informed on new arrivals on network! %O`, e);
try {
if (this._listener) {
this._listener.removeAllListeners();
this._listener.close();
this._listener = null;
}
} catch (e1) {
this._listener = null;
}
this._listener = null;
}
}
}
class Network extends EventEmitter {
constructor(dodhcp) {
super();
this._dodhcp = dodhcp;
this._init = false;
this._listener = null;
this._ping4session = null;
this._ping6session = null;
this._iflist = [];
this._macs = null;
this._ips = null;
this._nif = os.networkInterfaces();
this._iprCache = this._dnsCache = null;
this._netping = null;
}
get iflist() {
return this._iflist;
}
get nif() {
return this._nif;
}
static isIP(str) {
if (!str)
return 0;
str = str.trim().toLowerCase();
return net.isIP(str);
}
static isMac(str) {
if (!str || typeof str != 'string')
return null;
str = str.trim().toLowerCase();
return Network.matchMac.test(str) ? str : null;
}
static isIP4(str) {
if (!str)
return null;
str = str.trim().toLowerCase();
return net.isIPv4(str) ? str : null;
}
static isIP6(str) {
if (!str)
return null;
str = str.trim().toLowerCase();
return net.isIPv6(str) ? str : null;
}
static getMac(ip) {
if (!this.isIP4(ip))
return A.resolve(null);
let ret = null;
try {
ret = A.c2p(arp.getMAC)(ip);
} catch (e) {
A.Wf('Error %O in getMac with arp! Maybe no arp available?', e);
return Promise.reject();
}
return Promise.resolve(ret).then(x => this.isMac(x) ? x : null, () => null);
}
static get Ping() {
return ping;
}
static get matchMac() {
return /^(([\dA-F]{2}:){5}[\dA-F]{2})$/i;
}
static isLocal(address) {
if (!Network.isIP4(address))
return false;
return (/10\.\d+\.\d+\.\d+/).test(address) || (/192\.168\.\d+\.\d+/).test(address) || (/172\.16\.\d+\.\d+/).test(address);
}
async init(dhcp, pingopt) {
const self = this;
pingopt = pingopt || {
retries: 4,
// sessionId: (process.pid % 65535),
packetSize: 56,
timeout: 700,
ttl: 64
};
try {
this._netping = require('net-ping');
this._ping4session = this._netping.createSession(Object.assign(pingopt, {
networkProtocol: this._netping.NetworkProtocol.IPv4
}));
this._ping6session = this._netping.createSession(Object.assign(pingopt, {
networkProtocol: this._netping.NetworkProtocol.IPv6
}));
this._ping6session.mping = this._ping4session.mping = (ip, session) => {
return new Promise((res) => {
// A.I(`try to ping on ${ip}:`);
session.pingHost(ip, function (error, target) {
if (error) {
// if (!(error instanceof net_ping.RequestTimedOutError))
// A.W(target + ": " + error.toString());
// A.I(`ping negative result on ${ip} was ${error}`);
return res(undefined);
}
// A.I(`ping positive result on ${ip} was ${target}`);
return res(target);
});
}).then(x => x ? x : ping.promise.probe(ip).then(x => x && x.alive ? ip : null, () => null));
};
} catch (e) {
A.I('net-ping not available! Will try to use normal ping!');
const my = {
mping(ip) {
return ping.promise.probe(ip).then(x => x && x.alive ? ip : null, () => null);
},
// eslint-disable-next-line no-empty-function
close() {}
};
this._ping6session = this._ping4session = my;
}
this._dnsCache = new A.CacheP(((name) => {
let arr = [];
return Promise.all([
new Promise((res, rej) => dns.resolve4(name, (err, hosts) => err ? rej(err) : res(hosts))).then(x => arr = arr.concat(x), () => null),
new Promise((res, rej) => dns.resolve6(name, (err, hosts) => err ? rej(err) : res(hosts))).then(x => arr = arr.concat(x), () => null)
]).then(() => arr.length > 0 ? arr : null);
}));
this._iprCache = new A.CacheP(ip => A.c2p(dns.reverse)(ip).then(arr => arr.length > 0 ? arr.map(x => x.split('.')[0] !== 'fritz' && Network.isLocal(ip) && ip.split('.')[3] !== '1' ? x.split('.')[0] : x) : [], () => []));
this.clearCache();
for (const nif in this._nif)
for (const addr of this._nif[nif])
if (addr.internal !== undefined && !addr.internal) {
this._iflist.push([
nif, addr.family, addr.mac, addr.address, addr.scopeid, addr.cidr, Network.getMacV(addr.mac)
]);
this.combine(addr.mac, addr.address);
}
if (!dhcp || self._listener) return;
self._listener = new Dhcp();
self._listener.on('error', e => self.emit('error', e))
.on('listenState', s => self.emit('listenState', s))
.on('request', (req) => {
// A.Df("Dhcp got request: %j", req); // REM
self.combine(req.macAddress, req.ipAddress, req.hostName);
self.emit('request', req);
})
.on('close', () => self._listener && setTimeout(() => self._listener.init.bind(self._listener), 1000));
}
async ping(ips) {
const that = this;
const ret = [];
const pip = [];
function pres(ip) {
// A.If('should ping %O', ip);
ip = ip.trim();
let session = Network.isIP(ip);
if (!session)
return that.dnsResolve(ip).then(list => list ? that.ping(list) : null, () => null);
session = session === 4 ? that._ping4session : that._ping6session;
return session.mping(ip, session).then(x => x ? ret.push(ip) : x, x => x);
}
// if (typeof ips === 'string')
if (!Array.isArray(ips))
ips = [ips];
for (const i of ips)
pip.push(pres(i.trim()).catch(e => A.Wf('error in %s ping: %O', i, e)));
return Promise.race(pip).then(() => ret, () => ret);
}
clearCache() {
this._macs = new Map();
this._ips = new Map();
this._iprCache.clearCache();