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: nibbleblog_file_upload.rb
    path of file: ./repos/metasploit-framework/modules/exploits/multi/http
    
    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::Htt
    
  def do_login(user, pass)
    res = send_request_cgi(
      'method'      => 'GET',
      'uri'         => normalize_uri(target_uri.path, 'admin.php')
    )

    fail_with(Failure::Unreachable, 'No response received from the target.') unless res

    session_cookie = res.get_cookies
    vprint_status("Logging in...")
    res = send_request_cgi(
      'method'      => 'POST',
      'uri'         => normalize_uri(target_uri.path, 'admin.php'),
      'cookie'      => session_cookie,
      'vars_post'   => {
        'username'  => user,
        'password'  => pass
      }
    )

    return session_cookie if res && res.code == 302 && res.headers['Location']
    nil
  end