pangoliner/bin/pangoliner.js

pangoliner is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet. As of now, it supports tcp & udp, as well as http and https protocols, where requests can be forwarded to internal services by domain name.

#!/usr/bin/env node

const program = require('commander');
const { ActiveServer } = require('../index');
const { ClientServer } = require('../index');

program
  // 版本信息
  .version('0.0.4', '-v, --version')
  // 用法说明
  .usage('<file ...> [options]')
  // 选择名 选项描述 默认值
  // 选项 可以带有一个参数 可以通过 program.copy 获取该选项信息
  // 如果没有参数 该值为 true
  .option('-s, --server', 'run as a server')
  .option('-p, --port <port>', 'listen the local port')
  .option('-c, --client', 'run as a client')
  .option('-h, --host <host>', 'connect the host')
  .option('-b, --binds <binds>', 'bind local port to remote')
    .option('-e, --encrypt <encrypt>', 'which encrypt algorithm to use, the list is aes-128-cbc, aes-192-cbc, aes-256-cbc')
    .option('-k, --key <key>', 'the encrypt key')
    .option('-iv, --iv <iv>', 'the encrypt iv')
  .parse(process.argv);

function resolve(program) {
  // 没有匹配任何选项的参数会被放到数组 args 中
  console.log(program);
  const { server, client, port, host, binds, slash, args, encrypt, key, iv } = program._optionValues;
  console.log(`server: ${server}, port: ${port}, args: ${JSON.stringify(args)}, binds: ${JSON.stringify(binds)}`);
  if (server === true) {
    (new ActiveServer({port: port || 27, encrypt, key, iv})).start();
  }
  if (client === true) {
    // pangoliner -c -h 10.9.2.233 -p 29 -b www:80:8080;ftp:21:21
    // const { binds } = program._optionValues;
    console.log(`binds: ${binds}`);
    const bindsArgs = {};
    binds.split(',').map(item => {
      const args = item.split(':');
      if (args.length !== 3) {
        throw `the argument of the binding port is incorrect. Error: ${args}`
      }
      bindsArgs[args[0]] = {
        local_port: args[1],
        remote_port: args[2]
      }
    });
    console.log(`bindsArgs:${JSON.stringify(bindsArgs)}`);
    const client = new ClientServer({
      host: host,
      port: port || 27,
      binds: bindsArgs,
      encrypt,
      key,
      iv
    });

    client.init();
  }
}

resolve(program);