rdr

#!/usr/bin/env node
'use strict'

var fs = require('fs')
var readline = require('readline')
var bash = require('child_process').execSync
require('./scripts/map-args')()
var CMN = require('./scripts/common')
var on = require('./scripts/on')
var off = require('./scripts/off')
var configure = require('./scripts/configure')
var reset = require('./scripts/configure/reset')

/**
 * Reports everything that's being forwarded.
 * @function
 * @return {}
 */
function list() {
  var anchors = CMN.safeJSON(fs.readFileSync(CMN.FILE.ANCHORS_DB, 'utf8'), [])
  var hosts = CMN.safeJSON(fs.readFileSync(CMN.FILE.HOSTS_DB, 'utf8'), [])
  if (!hosts.length && !anchors.length) {
    CMN.stdout('No redirect rules have been setup.')
    return
  }
  if (!hosts.length) {
    CMN.stdout('No domains redirected.')
  } else {
    CMN.stdout('Domain redirects:')
    hosts.forEach(function (host) {
      CMN.stdout(host.src + ' -> ' + host.dst)
    })
  }
  CMN.stdout.blankline()
  if (!anchors.length) {
    CMN.stdout('No ports redirected.')
  } else {
    CMN.stdout('Port redirects:')
    anchors.forEach(function (anchor) {
      anchor = anchor.replace('rdr pass inet proto tcp from any to ', '')
      CMN.stdout(anchor)
    })
  }
}

function restore() {
  if (CMN.isRoot()) {
    var backup = fs.readFileSync(CMN.FILE.BACKUP, 'utf8') || '(Empty)'
    var EXPLANATION = ''+
     '\n  This operation will overwrite /etc/hosts with the content of' +
     '\n  ~/etchosts.bak. Examine the file (printed immediately above)'+
     '\n  before proceeding.'
    var rl = readline.createInterface({
      input: process.stdin,
      output: process.stdout
    })
    process.stdout.write('\n' + backup + '\n')
    CMN.stdout(EXPLANATION).write()
    rl.question('  Do you want to proceed (Y/n)? ', function (ans) {
      if (ans === 'Y') {
        fs.writeFileSync('/etc/hosts', backup)
        reset()
        rl.close()
      } else {
        CMN.stoudout('Restore aborted.')
        rl.close()
      }
    })
  }
}


// RUN =========================================================================
bash('sh ' + CMN.FILE.PREFIX + '/scripts/mkdirs.sh')
if (global.$1 === '.') configure()
else if (global.$1 === 'on') on()
else if (global.$1 === 'off') off()
else if (global.$1 === 'list') list()
else if (global.$1 === 'reset') reset()
else if (global.$1 === 'restore') restore()
else if (global.$1 === '--help') CMN.stdout(CMN.STRING.HELP)
else if (global.$1 === '--version') process.stderr.write(CMN.STRING.VERSION)
else if (global.$1 && global.$3) {
  configure([global.$1 +' '+ global.$2 +' '+ global.$3])
}
else CMN.stdout(CMN.STRING.HELP)
CMN.stdout.write()
// =============================================================================