consumer = OAuth::Consumer.new(
    CONSUMER_KEY, SECRET_KEY,
    :site               => "https://www.tumblr.com/",
    :access_token_path  => "/oauth/access_token",
    :http_method        => :post,
  )

  access_token = consumer.get_access_token(
    nil, {},
    :x_auth_mode => 'client_auth',
    :x_auth_username => EMAIL,
    :x_auth_password => PASSWORD,
  )

  print "got token, sending request... "
  response = access_token.post(
    "http://api.tumblr.com/v2/blog/#{BLOG_URL}/post",
    "generator" => "tumbl.rb",
    "type"      => "photo",
    "private"   => "0",
    "slug"      => "",
    "state"     => "",
    "tags"      => file.tags,
    "data"      => File.open(file.name, "rb").read.force_encoding('ASCII-8BIT'),
  )