dcssd

#!/usr/bin/env ruby

if (%w( -h --help help ) & ARGV).length > 0
  puts "Usage: dcssd [-hv]"
  puts "Starts dotcss server in the foreground. Kill with Control+C."
  exit
end

if (%w( -v --version version ) & ARGV).length > 0
  puts 'dcssd 2.2.0'
  exit
end

if Dir.glob('*.css').empty? and not Dir.glob(File.join(ENV['HOME'], ".css/*.css")).empty?
  Dir.chdir(File.join(ENV['HOME'], ".css"))
end

require 'webrick'
require 'webrick/https'

dotcss = Class.new(WEBrick::HTTPServlet::AbstractServlet) do
  def do_GET(request, response)
    body = build_body(request.path)

    response.status = body.empty? ? 204 : 200
    if origin = detect_origin(request)
      response['Access-Control-Allow-Origin'] = origin
    end
    response['Content-Type'] = 'text/css'
    response.body = body
  end

  def build_body(path)
    files = []
    paths = path.gsub('/', '').split('.')

    until paths.empty?
      file = File.expand_path(paths.join('.'))
      files << file if File.file?(file)
      paths.shift
    end

    files.sort_by! { |f| f.length }

    # Default CSS to the front of the line!
    files.unshift File.expand_path('default.css')

    body = "/* dotcss is working */\n"

    files.each do |file|
      body << File.read(file) + "\n" if File.file?(file)
    end

    body
  end

  def detect_origin(req)
    path   = req.path
    origin = req.header['origin']
    search = path.gsub('/','').gsub(/\.js$/,'') + '$'

    if origin.length == 1 && path.length != 1 && origin[0].match(search)
      origin[0]
    end
  end
end

ssl_info = DATA.read
ssl_cert = ssl_info.scan(/(-----BEGIN CERTIFICATE-----.+?-----END CERTIFICATE-----)/m)[0][0]
ssl_key  = ssl_info.scan(/(-----BEGIN RSA PRIVATE KEY-----.+?-----END RSA PRIVATE KEY-----)/m)[0][0]

server_options = {
  :BindAddress => "127.0.0.1",
  :Port => 1243,
  :AccessLog => [],
  :SSLEnable => true,
  :SSLVerifyClient => OpenSSL::SSL::VERIFY_NONE,
  :SSLPrivateKey => OpenSSL::PKey::RSA.new(ssl_key),
  :SSLCertificate => OpenSSL::X509::Certificate.new(ssl_cert),
  :SSLCertName => [["CN", WEBrick::Utils::getservername]],
}

server = WEBrick::HTTPServer.new(server_options)
server.mount('/', dotcss)

%w( INT TERM ).each do |sig|
  trap(sig) { server.shutdown }
end

server.start

__END__
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----