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DEV: Create CookedProcessMixin to process generic cooked (#15029)
This commit is contained in:
Mark VanLandingham
GitHub
parent
68b0fdd2b3
commit
4da23e811b
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@ -4,6 +4,8 @@
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# For example, inserting the onebox content, or image sizes/thumbnails.
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class CookedPostProcessor
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include CookedProcessorMixin
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LIGHTBOX_WRAPPER_CSS_CLASS = "lightbox-wrapper"
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LOADING_SIZE = 10
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LOADING_COLORS = 32
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@ -15,12 +17,15 @@ class CookedPostProcessor
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@dirty = false
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@opts = opts
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@post = post
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@model = post
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@previous_cooked = (@post.cooked || "").dup
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# NOTE: we re-cook the post here in order to prevent timing issues with edits
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# cf. https://meta.discourse.org/t/edit-of-rebaked-post-doesnt-show-in-html-only-in-raw/33815/6
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@cooking_options = post.cooking_options || opts[:cooking_options] || {}
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@cooking_options[:topic_id] = post.topic_id
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@cooking_options = @cooking_options.symbolize_keys
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@with_secure_media = @post.with_secure_media?
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@category_id = @post&.topic&.category_id
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cooked = post.cook(post.raw, @cooking_options)
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@doc = Loofah.fragment(cooked)
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@ -186,18 +191,6 @@ class CookedPostProcessor
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true
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end
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def large_images
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@large_images ||= @post.custom_fields[Post::LARGE_IMAGES].presence || []
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end
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def broken_images
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@broken_images ||= @post.custom_fields[Post::BROKEN_IMAGES].presence || []
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end
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def downloaded_images
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@downloaded_images ||= @post.downloaded_images
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end
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def extract_images
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# all images with a src attribute
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@doc.css("img[src]") -
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@ -223,88 +216,16 @@ class CookedPostProcessor
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@doc.css(".onebox.githubfolder img")
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end
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def oneboxed_images
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@doc.css(".onebox-body img, .onebox img, img.onebox")
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def large_images
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@large_images ||= @post&.custom_fields[Post::LARGE_IMAGES].presence || []
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end
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def limit_size!(img)
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# retrieve the size from
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# 1) the width/height attributes
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# 2) the dimension from the preview (image_sizes)
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# 3) the dimension of the original image (HTTP request)
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w, h = get_size_from_attributes(img) ||
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get_size_from_image_sizes(img["src"], @opts[:image_sizes]) ||
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get_size(img["src"])
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# limit the size of the thumbnail
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img["width"], img["height"] = ImageSizer.resize(w, h)
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def broken_images
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@broken_images ||= @post&.custom_fields[Post::BROKEN_IMAGES].presence || []
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end
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def get_size_from_attributes(img)
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w, h = img["width"].to_i, img["height"].to_i
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return [w, h] unless w <= 0 || h <= 0
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# if only width or height are specified attempt to scale image
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if w > 0 || h > 0
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w = w.to_f
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h = h.to_f
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return unless original_image_size = get_size(img["src"])
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original_width, original_height = original_image_size.map(&:to_f)
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if w > 0
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ratio = w / original_width
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[w.floor, (original_height * ratio).floor]
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else
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ratio = h / original_height
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[(original_width * ratio).floor, h.floor]
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end
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end
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end
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def get_size_from_image_sizes(src, image_sizes)
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return unless image_sizes.present?
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image_sizes.each do |image_size|
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url, size = image_size[0], image_size[1]
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if url && url.include?(src) &&
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size && size["width"].to_i > 0 && size["height"].to_i > 0
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return [size["width"], size["height"]]
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end
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end
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nil
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end
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def add_to_size_cache(url, w, h)
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@size_cache[url] = [w, h]
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end
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def get_size(url)
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return @size_cache[url] if @size_cache.has_key?(url)
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absolute_url = url
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absolute_url = Discourse.base_url_no_prefix + absolute_url if absolute_url =~ /^\/[^\/]/
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return unless absolute_url
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# FastImage fails when there's no scheme
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absolute_url = SiteSetting.scheme + ":" + absolute_url if absolute_url.start_with?("//")
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# we can't direct FastImage to our secure-media-uploads url because it bounces
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# anonymous requests with a 404 error
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if url && Upload.secure_media_url?(url)
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absolute_url = Upload.signed_url_from_secure_media_url(absolute_url)
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end
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return unless is_valid_image_url?(absolute_url)
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@size_cache[url] = FastImage.size(absolute_url)
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rescue Zlib::BufError, URI::Error, OpenSSL::SSL::SSLError
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# FastImage.size raises BufError for some gifs, leave it.
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end
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def is_valid_image_url?(url)
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uri = URI.parse(url)
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%w(http https).include? uri.scheme
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rescue URI::Error
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def downloaded_images
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@downloaded_images ||= @post&.downloaded_images || []
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end
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def convert_to_link!(img)
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@ -374,15 +295,6 @@ class CookedPostProcessor
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upload.thumbnail(LOADING_SIZE, LOADING_SIZE)
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end
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def is_a_hyperlink?(img)
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parent = img.parent
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while parent
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return true if parent.name == "a"
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parent = parent.parent if parent.respond_to?(:parent)
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end
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false
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end
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def each_responsive_ratio
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SiteSetting
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.responsive_post_image_sizes
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@ -464,35 +376,6 @@ class CookedPostProcessor
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I18n.t("upload.pasted_image_filename")
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end
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def create_node(tag_name, klass)
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node = Nokogiri::XML::Node.new(tag_name, @doc)
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node["class"] = klass if klass.present?
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node
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end
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def create_span_node(klass, content = nil)
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span = create_node("span", klass)
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span.content = content if content
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span
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end
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def create_icon_node(klass)
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icon = create_node("svg", "fa d-icon d-icon-#{klass} svg-icon")
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icon.set_attribute("aria-hidden", "true")
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icon << "<use xlink:href=\"##{klass}\"></use>"
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end
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def create_link_node(klass, url, external = false)
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a = create_node("a", klass)
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a["href"] = url
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if external
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a["target"] = "_blank"
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a["rel"] = "nofollow noopener"
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end
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a
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end
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def update_post_image
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upload = nil
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images = extract_images_for_post
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@ -523,125 +406,6 @@ class CookedPostProcessor
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end
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end
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def post_process_oneboxes
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limit = SiteSetting.max_oneboxes_per_post
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oneboxes = {}
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inlineOneboxes = {}
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Oneboxer.apply(@doc, extra_paths: [".inline-onebox-loading"]) do |url, element|
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is_onebox = element["class"] == Oneboxer::ONEBOX_CSS_CLASS
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map = is_onebox ? oneboxes : inlineOneboxes
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skip_onebox = limit <= 0 && !map[url]
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if skip_onebox
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if is_onebox
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element.remove_class('onebox')
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else
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remove_inline_onebox_loading_class(element)
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end
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next
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end
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limit -= 1
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map[url] = true
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if is_onebox
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onebox = Oneboxer.onebox(url,
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invalidate_oneboxes: !!@opts[:invalidate_oneboxes],
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user_id: @post&.user_id,
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category_id: @post&.topic&.category_id
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)
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@has_oneboxes = true if onebox.present?
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onebox
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else
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process_inline_onebox(element)
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false
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end
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end
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oneboxed_images.each do |img|
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next if img["src"].blank?
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src = img["src"].sub(/^https?:/i, "")
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parent = img.parent
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img_classes = (img["class"] || "").split(" ")
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link_classes = ((parent&.name == "a" && parent["class"]) || "").split(" ")
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if img_classes.include?("onebox") || link_classes.include?("onebox")
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next if add_image_placeholder!(img)
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elsif large_images.include?(src) || broken_images.include?(src)
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img.remove
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next
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end
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upload_id = downloaded_images[src]
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upload = Upload.find_by_id(upload_id) if upload_id
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if upload.present?
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img["src"] = UrlHelper.cook_url(upload.url, secure: @post.with_secure_media?)
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end
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# make sure we grab dimensions for oneboxed images
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# and wrap in a div
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limit_size!(img)
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next if img["class"]&.include?('onebox-avatar')
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parent = parent&.parent if parent&.name == "a"
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parent_class = parent && parent["class"]
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width = img["width"].to_i
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height = img["height"].to_i
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if parent_class&.include?("onebox-body") && width > 0 && height > 0
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# special instruction for width == height, assume we are dealing with an avatar
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if (img["width"].to_i == img["height"].to_i)
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found = false
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parent = img
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while parent = parent.parent
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if parent["class"] && parent["class"].include?("allowlistedgeneric")
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found = true
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break
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end
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end
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if found
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img["class"] = img["class"].to_s + " onebox-avatar"
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next
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end
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end
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if width < 64 && height < 64
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img["class"] = img["class"].to_s + " onebox-full-image"
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else
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img.delete('width')
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img.delete('height')
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new_parent = img.add_next_sibling("<div class='aspect-image' style='--aspect-ratio:#{width}/#{height};'/>")
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new_parent.first.add_child(img)
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end
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elsif (parent_class&.include?("instagram-images") || parent_class&.include?("tweet-images") || parent_class&.include?("scale-images")) && width > 0 && height > 0
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img.remove_attribute("width")
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img.remove_attribute("height")
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parent["class"] = "aspect-image-full-size"
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parent["style"] = "--aspect-ratio:#{width}/#{height};"
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end
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end
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if @omit_nofollow || !SiteSetting.add_rel_nofollow_to_user_content
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@doc.css(".onebox-body a[rel], .onebox a[rel]").each do |a|
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rel_values = a['rel'].split(' ').map(&:downcase)
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rel_values.delete('nofollow')
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rel_values.delete('ugc')
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if rel_values.blank?
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a.remove_attribute("rel")
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else
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a["rel"] = rel_values.join(' ')
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end
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end
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end
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end
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def optimize_urls
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%w{href data-download-href}.each do |selector|
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@doc.css("a[#{selector}]").each do |a|
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@ -701,7 +465,7 @@ class CookedPostProcessor
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staff_action_logger = StaffActionLogger.new(Discourse.system_user)
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staff_action_logger.log_site_setting_change("download_remote_images_to_local", true, false, details: reason)
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# also send a private message to the site contact user
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# also send a private message to the site contact user notify_about_low_disk_space
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notify_about_low_disk_space
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end
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@ -713,14 +477,6 @@ class CookedPostProcessor
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100 - DiskSpace.percent_free("#{Rails.root}/public/uploads")
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end
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def dirty?
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@previous_cooked != html
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end
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def html
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@doc.try(:to_html)
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end
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private
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def post_process_images
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@ -729,26 +485,6 @@ class CookedPostProcessor
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end
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end
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def process_inline_onebox(element)
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inline_onebox = InlineOneboxer.lookup(
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element.attributes["href"].value,
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invalidate: !!@opts[:invalidate_oneboxes],
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user_id: @post&.user_id,
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category_id: @post&.topic&.category_id
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)
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if title = inline_onebox&.dig(:title)
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element.children = CGI.escapeHTML(title)
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element.add_class("inline-onebox")
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end
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remove_inline_onebox_loading_class(element)
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end
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def remove_inline_onebox_loading_class(element)
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element.remove_class("inline-onebox-loading")
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end
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def is_svg?(img)
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path =
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begin
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@ -759,5 +495,4 @@ class CookedPostProcessor
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File.extname(path) == '.svg' if path
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end
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end
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343
lib/cooked_processor_mixin.rb
Normal file
343
lib/cooked_processor_mixin.rb
Normal file
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@ -0,0 +1,343 @@
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# frozen_string_literal: true
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module CookedProcessorMixin
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def post_process_oneboxes
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limit = SiteSetting.max_oneboxes_per_post
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oneboxes = {}
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inlineOneboxes = {}
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Oneboxer.apply(@doc, extra_paths: [".inline-onebox-loading"]) do |url, element|
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is_onebox = element["class"] == Oneboxer::ONEBOX_CSS_CLASS
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map = is_onebox ? oneboxes : inlineOneboxes
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skip_onebox = limit <= 0 && !map[url]
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if skip_onebox
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if is_onebox
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element.remove_class('onebox')
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else
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remove_inline_onebox_loading_class(element)
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end
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next
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end
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limit -= 1
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map[url] = true
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if is_onebox
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onebox = Oneboxer.onebox(url,
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invalidate_oneboxes: !!@opts[:invalidate_oneboxes],
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user_id: @model&.user_id,
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category_id: @category_id
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)
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@has_oneboxes = true if onebox.present?
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onebox
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else
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process_inline_onebox(element)
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false
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end
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end
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oneboxed_images.each do |img|
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next if img["src"].blank?
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src = img["src"].sub(/^https?:/i, "")
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parent = img.parent
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img_classes = (img["class"] || "").split(" ")
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link_classes = ((parent&.name == "a" && parent["class"]) || "").split(" ")
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if img_classes.include?("onebox") || link_classes.include?("onebox")
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next if add_image_placeholder!(img)
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elsif large_images.include?(src) || broken_images.include?(src)
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img.remove
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next
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end
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upload_id = downloaded_images[src]
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upload = Upload.find_by_id(upload_id) if upload_id
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if upload.present?
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img["src"] = UrlHelper.cook_url(upload.url, secure: @with_secure_media)
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end
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# make sure we grab dimensions for oneboxed images
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# and wrap in a div
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limit_size!(img)
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next if img["class"]&.include?('onebox-avatar')
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parent = parent&.parent if parent&.name == "a"
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parent_class = parent && parent["class"]
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width = img["width"].to_i
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height = img["height"].to_i
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if parent_class&.include?("onebox-body") && width > 0 && height > 0
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# special instruction for width == height, assume we are dealing with an avatar
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if (img["width"].to_i == img["height"].to_i)
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found = false
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parent = img
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while parent = parent.parent
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if parent["class"] && parent["class"].include?("allowlistedgeneric")
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found = true
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break
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end
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end
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if found
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img["class"] = img["class"].to_s + " onebox-avatar"
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next
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end
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end
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if width < 64 && height < 64
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img["class"] = img["class"].to_s + " onebox-full-image"
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else
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img.delete('width')
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img.delete('height')
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new_parent = img.add_next_sibling("<div class='aspect-image' style='--aspect-ratio:#{width}/#{height};'/>")
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new_parent.first.add_child(img)
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end
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elsif (parent_class&.include?("instagram-images") || parent_class&.include?("tweet-images") || parent_class&.include?("scale-images")) && width > 0 && height > 0
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img.remove_attribute("width")
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img.remove_attribute("height")
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parent["class"] = "aspect-image-full-size"
|
||||
parent["style"] = "--aspect-ratio:#{width}/#{height};"
|
||||
end
|
||||
end
|
||||
|
||||
if @omit_nofollow || !SiteSetting.add_rel_nofollow_to_user_content
|
||||
@doc.css(".onebox-body a[rel], .onebox a[rel]").each do |a|
|
||||
rel_values = a['rel'].split(' ').map(&:downcase)
|
||||
rel_values.delete('nofollow')
|
||||
rel_values.delete('ugc')
|
||||
if rel_values.blank?
|
||||
a.remove_attribute("rel")
|
||||
else
|
||||
a["rel"] = rel_values.join(' ')
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
def limit_size!(img)
|
||||
# retrieve the size from
|
||||
# 1) the width/height attributes
|
||||
# 2) the dimension from the preview (image_sizes)
|
||||
# 3) the dimension of the original image (HTTP request)
|
||||
w, h = get_size_from_attributes(img) ||
|
||||
get_size_from_image_sizes(img["src"], @opts[:image_sizes]) ||
|
||||
get_size(img["src"])
|
||||
|
||||
# limit the size of the thumbnail
|
||||
img["width"], img["height"] = ImageSizer.resize(w, h)
|
||||
end
|
||||
|
||||
def get_size_from_attributes(img)
|
||||
w, h = img["width"].to_i, img["height"].to_i
|
||||
return [w, h] unless w <= 0 || h <= 0
|
||||
# if only width or height are specified attempt to scale image
|
||||
if w > 0 || h > 0
|
||||
w = w.to_f
|
||||
h = h.to_f
|
||||
|
||||
return unless original_image_size = get_size(img["src"])
|
||||
original_width, original_height = original_image_size.map(&:to_f)
|
||||
|
||||
if w > 0
|
||||
ratio = w / original_width
|
||||
[w.floor, (original_height * ratio).floor]
|
||||
else
|
||||
ratio = h / original_height
|
||||
[(original_width * ratio).floor, h.floor]
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
def get_size_from_image_sizes(src, image_sizes)
|
||||
return unless image_sizes.present?
|
||||
image_sizes.each do |image_size|
|
||||
url, size = image_size[0], image_size[1]
|
||||
if url && url.include?(src) &&
|
||||
size && size["width"].to_i > 0 && size["height"].to_i > 0
|
||||
return [size["width"], size["height"]]
|
||||
end
|
||||
end
|
||||
nil
|
||||
end
|
||||
|
||||
def add_to_size_cache(url, w, h)
|
||||
@size_cache[url] = [w, h]
|
||||
end
|
||||
|
||||
def get_size(url)
|
||||
return @size_cache[url] if @size_cache.has_key?(url)
|
||||
|
||||
absolute_url = url
|
||||
absolute_url = Discourse.base_url_no_prefix + absolute_url if absolute_url =~ /^\/[^\/]/
|
||||
|
||||
return unless absolute_url
|
||||
|
||||
# FastImage fails when there's no scheme
|
||||
absolute_url = SiteSetting.scheme + ":" + absolute_url if absolute_url.start_with?("//")
|
||||
|
||||
# we can't direct FastImage to our secure-media-uploads url because it bounces
|
||||
# anonymous requests with a 404 error
|
||||
if url && Upload.secure_media_url?(url)
|
||||
absolute_url = Upload.signed_url_from_secure_media_url(absolute_url)
|
||||
end
|
||||
|
||||
return unless is_valid_image_url?(absolute_url)
|
||||
|
||||
@size_cache[url] = FastImage.size(absolute_url)
|
||||
rescue Zlib::BufError, URI::Error, OpenSSL::SSL::SSLError
|
||||
# FastImage.size raises BufError for some gifs, leave it.
|
||||
end
|
||||
|
||||
def is_valid_image_url?(url)
|
||||
uri = URI.parse(url)
|
||||
%w(http https).include? uri.scheme
|
||||
rescue URI::Error
|
||||
end
|
||||
|
||||
def add_image_placeholder!(img)
|
||||
src = img["src"].sub(/^https?:/i, "")
|
||||
|
||||
if large_images.include?(src)
|
||||
return add_large_image_placeholder!(img)
|
||||
elsif broken_images.include?(src)
|
||||
return add_broken_image_placeholder!(img)
|
||||
end
|
||||
|
||||
false
|
||||
end
|
||||
|
||||
def add_large_image_placeholder!(img)
|
||||
url = img["src"]
|
||||
|
||||
is_hyperlinked = is_a_hyperlink?(img)
|
||||
|
||||
placeholder = create_node("div", "large-image-placeholder")
|
||||
img.add_next_sibling(placeholder)
|
||||
placeholder.add_child(img)
|
||||
|
||||
a = create_link_node(nil, url, true)
|
||||
img.add_next_sibling(a)
|
||||
|
||||
span = create_span_node("url", url)
|
||||
a.add_child(span)
|
||||
span.add_previous_sibling(create_icon_node("far-image"))
|
||||
span.add_next_sibling(
|
||||
create_span_node(
|
||||
"help",
|
||||
I18n.t(
|
||||
"upload.placeholders.too_large_humanized",
|
||||
max_size: ActiveSupport::NumberHelper.number_to_human_size(SiteSetting.max_image_size_kb.kilobytes)
|
||||
)
|
||||
)
|
||||
)
|
||||
|
||||
# Only if the image is already linked
|
||||
if is_hyperlinked
|
||||
parent = placeholder.parent
|
||||
parent.add_next_sibling(placeholder)
|
||||
|
||||
if parent.name == 'a' && parent["href"].present?
|
||||
if url == parent["href"]
|
||||
parent.remove
|
||||
else
|
||||
parent["class"] = "link"
|
||||
a.add_previous_sibling(parent)
|
||||
|
||||
lspan = create_span_node("url", parent["href"])
|
||||
parent.add_child(lspan)
|
||||
lspan.add_previous_sibling(create_icon_node("link"))
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
img.remove
|
||||
true
|
||||
end
|
||||
|
||||
def add_broken_image_placeholder!(img)
|
||||
img.name = "span"
|
||||
img.set_attribute("class", "broken-image")
|
||||
img.set_attribute("title", I18n.t("post.image_placeholder.broken"))
|
||||
img << "<svg class=\"fa d-icon d-icon-unlink svg-icon\" aria-hidden=\"true\"><use xlink:href=\"#unlink\"></use></svg>"
|
||||
img.remove_attribute("src")
|
||||
img.remove_attribute("width")
|
||||
img.remove_attribute("height")
|
||||
true
|
||||
end
|
||||
|
||||
def oneboxed_images
|
||||
@doc.css(".onebox-body img, .onebox img, img.onebox")
|
||||
end
|
||||
|
||||
def is_a_hyperlink?(img)
|
||||
parent = img.parent
|
||||
while parent
|
||||
return true if parent.name == "a"
|
||||
parent = parent.parent if parent.respond_to?(:parent)
|
||||
end
|
||||
false
|
||||
end
|
||||
|
||||
def process_inline_onebox(element)
|
||||
inline_onebox = InlineOneboxer.lookup(
|
||||
element.attributes["href"].value,
|
||||
invalidate: !!@opts[:invalidate_oneboxes],
|
||||
user_id: @model&.user_id,
|
||||
category_id: @category_id
|
||||
)
|
||||
|
||||
if title = inline_onebox&.dig(:title)
|
||||
element.children = CGI.escapeHTML(title)
|
||||
element.add_class("inline-onebox")
|
||||
end
|
||||
|
||||
remove_inline_onebox_loading_class(element)
|
||||
end
|
||||
|
||||
def remove_inline_onebox_loading_class(element)
|
||||
element.remove_class("inline-onebox-loading")
|
||||
end
|
||||
|
||||
def dirty?
|
||||
@previous_cooked != html
|
||||
end
|
||||
|
||||
def html
|
||||
@doc.try(:to_html)
|
||||
end
|
||||
|
||||
def create_link_node(klass, url, external = false)
|
||||
a = create_node("a", klass)
|
||||
a["href"] = url
|
||||
if external
|
||||
a["target"] = "_blank"
|
||||
a["rel"] = "nofollow noopener"
|
||||
end
|
||||
a
|
||||
end
|
||||
|
||||
def create_icon_node(klass)
|
||||
icon = create_node("svg", "fa d-icon d-icon-#{klass} svg-icon")
|
||||
icon.set_attribute("aria-hidden", "true")
|
||||
icon << "<use xlink:href=\"##{klass}\"></use>"
|
||||
end
|
||||
|
||||
def create_node(tag_name, klass)
|
||||
node = Nokogiri::XML::Node.new(tag_name, @doc)
|
||||
node["class"] = klass if klass.present?
|
||||
node
|
||||
end
|
||||
|
||||
def create_span_node(klass, content = nil)
|
||||
span = create_node("span", klass)
|
||||
span.content = content if content
|
||||
span
|
||||
end
|
||||
end
|
||||
Loading…
Reference in New Issue
Block a user