def bad1
  # ruleid: net-ftp-request
  ftp = Net::FTP.new('example.com')
  ftp.login
  files = ftp.chdir('pub/lang/ruby/contrib')
  files = ftp.list('n*')
  ftp.getbinaryfile('nif.rb-0.91.gz', 'nif.gz', 1024)
  ftp.close
end

def bad2
  # ruleid: net-ftp-request
  Net::FTP.open('example.com') do |ftp|
    ftp.login
    files = ftp.chdir('pub/lang/ruby/contrib')
    files = ftp.list('n*')
    ftp.getbinaryfile('nif.rb-0.91.gz', 'nif.gz', 1024)
  end
end