xbox_live_login.rb

require "ffi"

module XboxLiveLogin
  module GTK
    extend FFI::Library

    ffi_lib "gtk-3"

    attach_function :g_signal_connect_data, [:pointer, :string, :pointer, :pointer, :pointer, :int], :ulong
    attach_function :gtk_init, [:int, :pointer], :void
    attach_function :gtk_main, [], :void
    attach_function :gtk_main_quit, [], :void
    attach_function :gtk_widget_destroy, [:pointer], :void

    def g_signal_connect(instance, detailed_signal, c_handler, data)
      g_signal_connect_data(instance, detailed_signal, c_handler, data, nil, 0)
    end
    module_function :g_signal_connect
  end

  module Soup
    extend FFI::Library

    ffi_lib "soup-2.4"

    attach_function :soup_cookie_jar_get_cookies, [:pointer, :pointer, :bool], :string
    attach_function :soup_cookie_jar_get_type, [], :pointer
    attach_function :soup_session_get_feature, [:pointer, :pointer], :pointer
    attach_function :soup_uri_new, [:string], :pointer
  end

  module WebKit
    extend FFI::Library

    ffi_lib "webkitgtk-3.0"

    attach_function :webkit_dom_document_get_elements_by_name, [:pointer, :string], :pointer
    attach_function :webkit_dom_html_collection_named_item, [:pointer, :string], :pointer
    attach_function :webkit_dom_html_form_element_get_elements, [:pointer], :pointer
    attach_function :webkit_dom_html_input_element_click, [:pointer], :void
    attach_function :webkit_dom_html_input_element_set_value, [:pointer, :string], :void
    attach_function :webkit_dom_node_list_item, [:pointer, :ulong], :pointer
    attach_function :webkit_get_default_session, [], :pointer
    attach_function :webkit_web_view_get_dom_document, [:pointer], :pointer
    attach_function :webkit_web_view_load_uri, [:pointer, :string], :void
    attach_function :webkit_web_view_new, [], :pointer
  end

  extend GTK
  extend Soup
  extend WebKit

  URL = "http://live.xbox.com/en-US/friendcenter"

  class << self
    def login(username, password, url = URL)
      cookie = nil

      gtk_init(0, FFI::MemoryPointer.new(:pointer, 0))

      view = webkit_web_view_new()
      webkit_web_view_load_uri(view, url)

      on_document_load = FFI::Function.new(:void, [:pointer, :pointer, :pointer]) do |view, frame, step|
        case step.write_int(step.read_int + 1).read_int
          when 2
            document = webkit_web_view_get_dom_document(view)
            list = webkit_dom_document_get_elements_by_name(document, "f1")
            form = webkit_dom_node_list_item(list, 0)
            elements = webkit_dom_html_form_element_get_elements(form)

            login = webkit_dom_html_collection_named_item(elements, "login")
            passwd = webkit_dom_html_collection_named_item(elements, "passwd")
            submit = webkit_dom_html_collection_named_item(elements, "SI")

            webkit_dom_html_input_element_set_value(login, username)
            webkit_dom_html_input_element_set_value(passwd, password)
            webkit_dom_html_input_element_click(submit)
          when 5
            session = webkit_get_default_session()
            jar = soup_session_get_feature(session, soup_cookie_jar_get_type)
            cookie = soup_cookie_jar_get_cookies(jar, soup_uri_new(url), true)

            gtk_main_quit()
        end
      end

      step = FFI::MemoryPointer.new(:pointer).write_int(0)
      g_signal_connect(view, "document-load-finished", on_document_load, step)

      gtk_main()
      gtk_widget_destroy(view)

      cookie
    end
  end
end