Add port-sniffer by Xsorter

package.json

@@ -9,6 +9,7 @@
     "lint-staged": "lint-staged",
     "install:void": ":",
     "install:kissik/port-sniffer": "cd ./submissions/kissik/port-sniffer && yarn",
+    "install:xsorter/port-sniffer": "cd ./submissions/xsorter/port-sniffer && yarn",
     "postinstall": "run-p install:**"
   },
   "repository": {

submissions/xsorter/port-sniffer/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "port_sniffer",
+  "version": "1.0.0",
+  "description": "",
+  "main": "program.js",
+  "dependencies": {
+    "minimist": "^1.2.0"
+  },
+  "devDependencies": {},
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

submissions/xsorter/port-sniffer/program.js

@@ -0,0 +1,95 @@
+const net = require('net');
+const dns = require('dns');
+const args = require('minimist')(process.argv.slice(2));
+const range = findPortsRange();
+
+const ports = {
+  firstPort: +range[0],
+  lastPort: +range[1] ? +range[1] : +range[0],
+  openedPorts: []
+};
+
+const openedPortCheck = (host, port, checkCallback) => {
+  const socket = net.createConnection(port, host);
+  const time = socket.setTimeout(300, () => {
+    socket.destroy();
+    checkCallback(false);
+  });
+
+  socket.on('connect', () => {
+    clearTimeout(time);
+    socket.destroy();
+    process.stdout.write('.');
+    ports.openedPorts.push(port);
+    checkCallback(true);
+  });
+  socket.on('error', function () {
+    clearTimeout(time);
+    checkCallback(false);
+  });
+};
+
+const showResult = host => {
+  if (args.help) {
+    process.stdout.write(messages().help);
+    process.exit(1);
+  }
+  if (!args.host) {
+    process.stdout.write(messages().noHost);
+    process.exit(1);
+  } else {
+    openedPortCheck(host, ports.firstPort, function nextIteration () {
+      if (ports.firstPort === ports.lastPort) {
+        if (ports.openedPorts.length) {
+          process.stdout.write(messages(ports.openedPorts.join()).openedPorts);
+          process.exit();
+        } else {
+          process.stdout.write(messages().portsNotFound);
+          process.exit(1);
+        }
+      }
+      openedPortCheck(host, ++ports.firstPort, nextIteration);
+    });
+  }
+};
+
+function findPortsRange () {
+  if (args.ports) {
+    if (args.ports.length) {
+      return args.ports.toString().split('-');
+    } else {
+      process.stdout.write(messages().emptyPortsParameter);
+      process.exit(1);
+    }
+  } else {
+    return ['0', '65535'];
+  }
+}
+
+function messages (openedPortsNumbers) {
+  return {
+    help: `Port sniffer CLI tool. \n
+    Parameters:
+    --ports - type ports range
+    --host - provide host IP adress or domain name \n
+    Usage example: node program.js --ports 80-87 --host google.com`,
+    noHost: 'Please provide host name. Type --help for usage manual.',
+    openedPorts: `\nports ${openedPortsNumbers} are opened`,
+    portsNotFound: 'No opened ports was found',
+    emptyPortsParameter:
+      'Please provide a port numbers range or skip --port parameter for default values (0-65535)'
+  };
+}
+
+const ipLookup = () => {
+  return new Promise((resolve, reject) => {
+    dns.lookup(args.host, (err, address) => {
+      if (err) reject(err);
+      resolve(address);
+    });
+  });
+};
+
+ipLookup()
+  .then(res => showResult(res))
+  .catch(() => process.stdout.write('Adress not found'));