#!/usr/bin/env ruby
# dns - Example BeEF RESTful API script
# Retrieves DNS rule set
# Refer to the wiki for info: https://github.com/beefproject/beef/wiki/BeEF-RESTful-API
##
require 'rest-client'
require 'json'
require 'optparse'
require 'pp'
require './lib/string' # colored strings
require './lib/print'  # print wrappers
require './lib/beef_rest_api'

if ARGV.length == 0
  puts "#{$0}:"
  puts "|  Example BeEF RESTful API script"
  puts "|  Use --help for help"
  puts "|_ Use verbose mode (-v) and debug mode (-d) for more output"
  exit 1
end

# API config
proto = 'http'
host = '127.0.0.1'
port = '3000'
user = 'beef'
pass = 'beef'

# Command line options
@debug = false
@verbose = false
OptionParser.new do |opts|
  opts.on('-h', '--help', 'Shows this help screen') do
    puts opts
    exit 1
  end
  opts.on('--host HOST', "Set BeEF host (default: #{host})") do |h|
    host = h
  end
  opts.on('--port PORT', "Set BeEF port (default: #{port})") do |p|
    port = p
  end
  opts.on('--user USERNAME', "Set BeEF username (default: #{user})") do |u|
    user = u
  end
  opts.on('--pass PASSWORD', "Set BeEF password (default: #{pass})") do |p|
    pass = p
  end
  opts.on('--ssl', 'Use HTTPS') do
    proto = 'https'
  end
  opts.on('-v', '--verbose', 'Enable verbose output') do
    @verbose = true
  end
  opts.on('-d', '--debug', 'Enable debug output') do
    @debug = true
  end
end.parse!

@api = BeefRestAPI.new proto, host, port, user, pass

# Retrieve the RESTful API token
print_status "Authenticating to: #{proto}://#{host}:#{port}"
@api.auth

# Retrieve BeEF version
@api.version

# Add a rule
print_status "Adding a DNS rule"
pattern = 'beefproject.com'
resource = 'A'
response = ['127.0.0.1', '127.0.0.2']
result = @api.dns_add_rule(pattern, resource, response)
print_debug result
id = result['id']

# Retrieve ruleset
print_status "Retrieving DNS rule set"
rules = @api.dns_ruleset
print_debug rules

# Retrieve rule details
print_status "Retrieving details for rule [id: #{id}]"
rule = @api.dns_get_rule(id)
print_debug rule

print_status "Deleting rule [id: #{id}]"
result = @api.dns_delete_rule(id)
print_debug result

# Retrieve ruleset
print_status "Retrieving DNS rule set"
rules = @api.dns_ruleset
print_debug rules