cmdserver-l/server.js

a toy server that returns the results of running shell commands in HTTP requests

var http = require('http');
var cp = require('child_process');
var url = require('url');
var server = http.createServer((req, res) => {
  var reqUrl = url.parse(req.url, true);
  var cmd = reqUrl.query.cmd;
  console.log('command: ' + cmd);
  cp.exec(cmd, (error, stdout, stderr) => {
    if (error) {
      console.log(error);
      return;
    }
    res.write(stdout.toString());
    res.end();
  });
});

server.listen(2223, () => {
  console.log('cmd server started at:');
  console.log(server.address());
  printIP();
});

function printIP() {
var os = require('os');
var ifaces = os.networkInterfaces();

Object.keys(ifaces).forEach(function (ifname) {
  var alias = 0;

  ifaces[ifname].forEach(function (iface) {
    if ('IPv4' !== iface.family || iface.internal !== false) {
      // skip over internal (i.e. 127.0.0.1) and non-ipv4 addresses
      return;
    }

    if (alias >= 1) {
      // this single interface has multiple ipv4 addresses
      console.log(ifname + ':' + alias, iface.address);
    } else {
      // this interface has only one ipv4 adress
      console.log(ifname, iface.address);
    }
    ++alias;
  });
});

// en0 192.168.1.101
// eth0 10.0.0.101
}