345 lines
9.6 KiB
Ruby
345 lines
9.6 KiB
Ruby
# 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"
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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 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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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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end
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def add_image_placeholder!(img)
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src = img["src"].sub(/^https?:/i, "")
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if large_images.include?(src)
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return add_large_image_placeholder!(img)
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elsif broken_images.include?(src)
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return add_broken_image_placeholder!(img)
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end
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false
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end
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def add_large_image_placeholder!(img)
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url = img["src"]
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is_hyperlinked = is_a_hyperlink?(img)
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placeholder = create_node("div", "large-image-placeholder")
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img.add_next_sibling(placeholder)
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placeholder.add_child(img)
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a = create_link_node(nil, url, true)
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img.add_next_sibling(a)
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span = create_span_node("url", url)
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a.add_child(span)
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span.add_previous_sibling(create_icon_node("far-image"))
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span.add_next_sibling(
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create_span_node(
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"help",
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I18n.t(
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"upload.placeholders.too_large_humanized",
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max_size: ActiveSupport::NumberHelper.number_to_human_size(SiteSetting.max_image_size_kb.kilobytes)
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)
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)
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)
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# Only if the image is already linked
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if is_hyperlinked
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parent = placeholder.parent
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parent.add_next_sibling(placeholder)
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if parent.name == 'a' && parent["href"].present?
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if url == parent["href"]
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parent.remove
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else
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parent["class"] = "link"
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a.add_previous_sibling(parent)
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lspan = create_span_node("url", parent["href"])
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parent.add_child(lspan)
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lspan.add_previous_sibling(create_icon_node("link"))
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end
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end
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end
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img.remove
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true
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end
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def add_broken_image_placeholder!(img)
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img.name = "span"
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img.set_attribute("class", "broken-image")
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img.set_attribute("title", I18n.t("post.image_placeholder.broken"))
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img << "<svg class=\"fa d-icon d-icon-unlink svg-icon\" aria-hidden=\"true\"><use href=\"#unlink\"></use></svg>"
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img.remove_attribute("src")
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img.remove_attribute("width")
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img.remove_attribute("height")
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true
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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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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 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: @model&.user_id,
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category_id: @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 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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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 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 href=\"##{klass}\"></use>"
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end
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def create_node(tag_name, klass)
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node = @doc.document.create_element(tag_name)
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node["class"] = klass if klass.present?
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@doc.add_child(node)
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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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end
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