如何配置'high_voltage'gem来提供静态图像?

时间:2013-02-13 18:19:10

标签: ruby-on-rails-3.2 high-voltage

我正在尝试使用'high_voltage'gem来确保我的页面周围的身份验证(实际上是一些带有静态html / css树的完全独立的站点)。这有效,但没有加载图像。如果我导航到图像的路径,则图像的源代码将作为文本返回,从而导致“页面#show中的ActionView :: WrongEncodingError”。如果我将静态html文件夹放在/ public中,所有图像都按预期加载。显然我的PageController尝试渲染静态图像,就像模板一样。我该如何解决这个问题?

我已经覆盖了PageController,如下所述: https://github.com/thoughtbot/high_voltage#override



# in config/routes.rb

  match "/pages/*id" => 'pages#show', :as => :page,  :format => false

# in app/controller/pages_controller.rb

  before_filter :authenticate_client!
  layout :nil

  def show
    custom_authentication
    super
  end

  ...


我是一名RoR新手,欢迎任何一般帮助或建议。

编辑:这是完整的错误消息


ActionView::WrongEncodingError in Pages#show

Showing /home/robert/Coding/RailsPlayground/JoSchaefer/app/views/pages/myWebsite/images/test.png where line # raised:

Your template was not saved as valid UTF-8. Please either specify UTF-8 as the encoding for your template in your text editor, or mark the template with its encoding by inserting the following as the first line of the template:

# encoding: <name of correct encoding>.

The source of your template was:

�PNG


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Extracted source (around line #):

Rails.root: /home/robert/Coding/RailsPlayground/JoSchaefer

Application Trace | Framework Trace | Full Trace
app/controllers/pages_controller.rb:7:in `show'
Request

Parameters:

{"id"=>"myWebsite/images/test.png"}
Show session dump

Show env dump

Response

Headers:

None

2 个答案:

答案 0 :(得分:1)

在我查找'high_voltage'宝石的来源后,我能够通过内联发送原始文件来“解决”我的问题:



    # in /app/controllers/pages_controller.rb
      def show
        logger.debug "Current page is: #{current_page}"
        custom_authentication current_page
        send_file "app/views/#{current_page}", :disposition => 'inline'
        # super
      end

这是HighVoltage::PagesController

的跳过超级方法


    # source of 'high_voltage' gem
    # in app/controllers/high_voltage/pages_controller.rb
      def show
        render :template => current_page
      end

我知道security risk,因为current_page来自params[:id]。但是,HighVoltage::PageFinder显然消除了给定的输入:



    # source of 'high_voltage' gem
    # in lib/high_voltage/page_finder.rb

        VALID_CHARACTERS = "a-zA-Z0-9~!@$%^&*()#`_+-=\"{}|[];',?".freeze
    ...
        def clean_path
          path = Pathname.new("/#{clean_id}")
          path.cleanpath.to_s[1..-1]
        end

        def clean_id
          @page_id.tr("^#{VALID_CHARACTERS}", '')
        end

导航到http://localhost:3000/pages/../shouldNotBeAccessed.html导致http://localhost:3000/shouldNotBeAccessed.htmlPagesController永远不会被调用,这没关系,http://localhost:3000/pages/something/../somethingElse.html调用PagesController并且记录器给了我“当前页面是:pages / somethingElse.html”,因此只要在app / views / pages /中发生路径遍历就可以了。这对我来说是可接受的行为。

答案 1 :(得分:0)

如果您使用的是Rails 3.2,则可能依赖于资产管道。惯例是将图像放在资产目录中(默认情况下):app/assets/imageslib/assets/imagesvendor/assets/images。可能的解决方案是将图像移动到那里或扩展资产目录,如this Rails guide中所述。

编辑:扩展您案例中的资产目录(添加到application.rb):

config.assets.paths << Rails.root.join("app","views","pages","myWebsite")
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