mirror of
https://github.com/discourse/discourse.git
synced 2024-11-24 11:33:06 +08:00
2443446e62
Preloading just metadata is not always respected by browsers, and sometimes the whole video will be downloaded. This switches to using a placeholder image for the video and only loads the video when the play button is clicked.
779 lines
26 KiB
Ruby
779 lines
26 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require "mini_racer"
|
|
require "nokogiri"
|
|
require "erb"
|
|
|
|
module PrettyText
|
|
DANGEROUS_BIDI_CHARACTERS = [
|
|
"\u202A",
|
|
"\u202B",
|
|
"\u202C",
|
|
"\u202D",
|
|
"\u202E",
|
|
"\u2066",
|
|
"\u2067",
|
|
"\u2068",
|
|
"\u2069",
|
|
].freeze
|
|
DANGEROUS_BIDI_REGEXP = Regexp.new(DANGEROUS_BIDI_CHARACTERS.join("|")).freeze
|
|
|
|
BLOCKED_HOTLINKED_SRC_ATTR = "data-blocked-hotlinked-src"
|
|
BLOCKED_HOTLINKED_SRCSET_ATTR = "data-blocked-hotlinked-srcset"
|
|
|
|
@mutex = Mutex.new
|
|
@ctx_init = Mutex.new
|
|
|
|
def self.app_root
|
|
Rails.root
|
|
end
|
|
|
|
def self.find_file(root, filename)
|
|
return filename if File.file?("#{root}#{filename}")
|
|
|
|
es6_name = "#{filename}.js.es6"
|
|
return es6_name if File.file?("#{root}#{es6_name}")
|
|
|
|
js_name = "#{filename}.js"
|
|
return js_name if File.file?("#{root}#{js_name}")
|
|
|
|
erb_name = "#{filename}.js.es6.erb"
|
|
return erb_name if File.file?("#{root}#{erb_name}")
|
|
|
|
erb_name = "#{filename}.js.erb"
|
|
erb_name if File.file?("#{root}#{erb_name}")
|
|
end
|
|
|
|
def self.apply_es6_file(ctx, root_path, part_name)
|
|
filename = find_file(root_path, part_name)
|
|
if filename
|
|
source = File.read("#{root_path}#{filename}")
|
|
source = ERB.new(source).result(binding) if filename =~ /\.erb\z/
|
|
|
|
transpiler = DiscourseJsProcessor::Transpiler.new
|
|
transpiled = transpiler.perform(source, "#{Rails.root}/app/assets/javascripts/", part_name)
|
|
ctx.eval(transpiled)
|
|
else
|
|
# Look for vendored stuff
|
|
vendor_root = "#{Rails.root}/vendor/assets/javascripts/"
|
|
filename = find_file(vendor_root, part_name)
|
|
ctx.eval(File.read("#{vendor_root}#{filename}")) if filename
|
|
end
|
|
end
|
|
|
|
def self.ctx_load_directory(ctx, path)
|
|
root_path = "#{Rails.root}/app/assets/javascripts/"
|
|
Dir["#{root_path}#{path}/**/*"].sort.each do |f|
|
|
apply_es6_file(ctx, root_path, f.sub(root_path, "").sub(/\.js(.es6)?\z/, ""))
|
|
end
|
|
end
|
|
|
|
def self.create_es6_context
|
|
ctx = MiniRacer::Context.new(timeout: 25_000, ensure_gc_after_idle: 2000)
|
|
|
|
ctx.eval("window = {}; window.devicePixelRatio = 2;") # hack to make code think stuff is retina
|
|
|
|
ctx.attach("rails.logger.info", proc { |err| Rails.logger.info(err.to_s) })
|
|
ctx.attach("rails.logger.warn", proc { |err| Rails.logger.warn(err.to_s) })
|
|
ctx.attach("rails.logger.error", proc { |err| Rails.logger.error(err.to_s) })
|
|
ctx.eval <<~JS
|
|
console = {
|
|
prefix: "[PrettyText] ",
|
|
log: function(...args){ rails.logger.info(console.prefix + args.join(" ")); },
|
|
warn: function(...args){ rails.logger.warn(console.prefix + args.join(" ")); },
|
|
error: function(...args){ rails.logger.error(console.prefix + args.join(" ")); }
|
|
}
|
|
JS
|
|
|
|
ctx.eval("__PRETTY_TEXT = true")
|
|
|
|
PrettyText::Helpers.instance_methods.each do |method|
|
|
ctx.attach("__helpers.#{method}", PrettyText::Helpers.method(method))
|
|
end
|
|
|
|
root_path = "#{Rails.root}/app/assets/javascripts/"
|
|
ctx_load(ctx, "#{root_path}/node_modules/loader.js/dist/loader/loader.js")
|
|
ctx_load(ctx, "#{root_path}/handlebars-shim.js")
|
|
ctx_load(ctx, "#{root_path}/node_modules/xss/dist/xss.js")
|
|
ctx.load("#{Rails.root}/lib/pretty_text/vendor-shims.js")
|
|
ctx_load_directory(ctx, "pretty-text/addon")
|
|
ctx_load_directory(ctx, "pretty-text/engines/discourse-markdown")
|
|
ctx_load(ctx, "#{root_path}/node_modules/markdown-it/dist/markdown-it.js")
|
|
|
|
apply_es6_file(ctx, root_path, "discourse-common/addon/lib/get-url")
|
|
apply_es6_file(ctx, root_path, "discourse-common/addon/lib/object")
|
|
apply_es6_file(ctx, root_path, "discourse-common/addon/lib/deprecated")
|
|
apply_es6_file(ctx, root_path, "discourse-common/addon/lib/escape")
|
|
apply_es6_file(ctx, root_path, "discourse-common/addon/lib/avatar-utils")
|
|
apply_es6_file(ctx, root_path, "discourse-common/addon/utils/watched-words")
|
|
apply_es6_file(ctx, root_path, "discourse/app/lib/to-markdown")
|
|
|
|
ctx.load("#{Rails.root}/lib/pretty_text/shims.js")
|
|
ctx.eval("__setUnicode(#{Emoji.unicode_replacements_json})")
|
|
|
|
to_load = []
|
|
DiscoursePluginRegistry.each_globbed_asset do |a|
|
|
to_load << a if File.file?(a) && a =~ /discourse-markdown/
|
|
end
|
|
to_load.uniq.each do |f|
|
|
if f =~ %r{\A.+assets/javascripts/}
|
|
root = Regexp.last_match[0]
|
|
apply_es6_file(ctx, root, f.sub(root, "").sub(/\.js(\.es6)?\z/, ""))
|
|
end
|
|
end
|
|
|
|
DiscoursePluginRegistry.vendored_core_pretty_text.each { |vpt| ctx.eval(File.read(vpt)) }
|
|
|
|
DiscoursePluginRegistry.vendored_pretty_text.each { |vpt| ctx.eval(File.read(vpt)) }
|
|
|
|
ctx
|
|
end
|
|
|
|
def self.v8
|
|
return @ctx if @ctx
|
|
|
|
# ensure we only init one of these
|
|
@ctx_init.synchronize do
|
|
return @ctx if @ctx
|
|
@ctx = create_es6_context
|
|
end
|
|
|
|
@ctx
|
|
end
|
|
|
|
def self.reset_translations
|
|
v8.eval("__resetTranslationTree()")
|
|
end
|
|
|
|
def self.reset_context
|
|
@ctx_init.synchronize do
|
|
@ctx&.dispose
|
|
@ctx = nil
|
|
end
|
|
end
|
|
|
|
# Acceptable options:
|
|
#
|
|
# disable_emojis - Disables the emoji markdown engine.
|
|
# features - A hash where the key is the markdown feature name and the value is a boolean to enable/disable the markdown feature.
|
|
# The hash is merged into the default features set in pretty-text.js which can be used to add new features or disable existing features.
|
|
# features_override - An array of markdown feature names to override the default markdown feature set. Currently used by plugins to customize what features should be enabled
|
|
# when rendering markdown.
|
|
# markdown_it_rules - An array of markdown rule names which will be applied to the markdown-it engine. Currently used by plugins to customize what markdown-it rules should be
|
|
# enabled when rendering markdown.
|
|
# topic_id - Topic id for the post being cooked.
|
|
# user_id - User id for the post being cooked.
|
|
# force_quote_link - Always create the link to the quoted topic for [quote] bbcode. Normally this only happens
|
|
# if the topic_id provided is different from the [quote topic:X].
|
|
# hashtag_context - Defaults to "topic-composer" if not supplied. Controls the order of #hashtag lookup results
|
|
# based on registered hashtag contexts from the `#register_hashtag_search_param` plugin API
|
|
# method.
|
|
def self.markdown(text, opts = {})
|
|
# we use the exact same markdown converter as the client
|
|
# TODO: use the same extensions on both client and server (in particular the template for mentions)
|
|
baked = nil
|
|
text = text || ""
|
|
|
|
protect do
|
|
context = v8
|
|
|
|
custom_emoji = {}
|
|
Emoji.custom.map { |e| custom_emoji[e.name] = e.url }
|
|
|
|
# note, any additional options added to __optInput here must be
|
|
# also be added to the buildOptions function in pretty-text.js,
|
|
# otherwise they will be discarded
|
|
buffer = +<<~JS
|
|
__optInput = {};
|
|
__optInput.siteSettings = #{SiteSetting.client_settings_json};
|
|
#{"__optInput.disableEmojis = true" if opts[:disable_emojis]}
|
|
__paths = #{paths_json};
|
|
__optInput.getURL = __getURL;
|
|
#{"__optInput.features = #{opts[:features].to_json};" if opts[:features]}
|
|
#{"__optInput.featuresOverride = #{opts[:features_override].to_json};" if opts[:features_override]}
|
|
#{"__optInput.markdownItRules = #{opts[:markdown_it_rules].to_json};" if opts[:markdown_it_rules]}
|
|
__optInput.getCurrentUser = __getCurrentUser;
|
|
__optInput.lookupAvatar = __lookupAvatar;
|
|
__optInput.lookupPrimaryUserGroup = __lookupPrimaryUserGroup;
|
|
__optInput.formatUsername = __formatUsername;
|
|
__optInput.getTopicInfo = __getTopicInfo;
|
|
__optInput.hashtagLookup = __hashtagLookup;
|
|
__optInput.customEmoji = #{custom_emoji.to_json};
|
|
__optInput.customEmojiTranslation = #{Plugin::CustomEmoji.translations.to_json};
|
|
__optInput.emojiUnicodeReplacer = __emojiUnicodeReplacer;
|
|
__optInput.emojiDenyList = #{Emoji.denied.to_json};
|
|
__optInput.lookupUploadUrls = __lookupUploadUrls;
|
|
__optInput.censoredRegexp = #{WordWatcher.serializable_word_matcher_regexp(:censor, engine: :js).to_json};
|
|
__optInput.watchedWordsReplace = #{WordWatcher.word_matcher_regexps(:replace, engine: :js).to_json};
|
|
__optInput.watchedWordsLink = #{WordWatcher.word_matcher_regexps(:link, engine: :js).to_json};
|
|
__optInput.additionalOptions = #{Site.markdown_additional_options.to_json};
|
|
__optInput.avatar_sizes = #{SiteSetting.avatar_sizes.to_json};
|
|
JS
|
|
|
|
buffer << "__optInput.topicId = #{opts[:topic_id].to_i};\n" if opts[:topic_id]
|
|
|
|
if opts[:force_quote_link]
|
|
buffer << "__optInput.forceQuoteLink = #{opts[:force_quote_link]};\n"
|
|
end
|
|
|
|
buffer << "__optInput.userId = #{opts[:user_id].to_i};\n" if opts[:user_id]
|
|
|
|
opts[:hashtag_context] = opts[:hashtag_context] || "topic-composer"
|
|
hashtag_types_as_js =
|
|
HashtagAutocompleteService
|
|
.ordered_types_for_context(opts[:hashtag_context])
|
|
.map { |t| "'#{t}'" }
|
|
.join(",")
|
|
buffer << "__optInput.hashtagTypesInPriorityOrder = [#{hashtag_types_as_js}];\n"
|
|
buffer << "__optInput.hashtagIcons = #{HashtagAutocompleteService.data_source_icon_map.to_json};\n"
|
|
|
|
buffer << "__textOptions = __buildOptions(__optInput);\n"
|
|
buffer << ("__pt = new __PrettyText(__textOptions);")
|
|
|
|
# Be careful disabling sanitization. We allow for custom emails
|
|
buffer << ("__pt.disableSanitizer();") if opts[:sanitize] == false
|
|
|
|
opts = context.eval(buffer)
|
|
|
|
DiscourseEvent.trigger(:markdown_context, context)
|
|
baked = context.eval("__pt.cook(#{text.inspect})")
|
|
end
|
|
|
|
baked
|
|
end
|
|
|
|
def self.paths_json
|
|
paths = { baseUri: Discourse.base_path, CDN: Rails.configuration.action_controller.asset_host }
|
|
|
|
if SiteSetting.Upload.enable_s3_uploads
|
|
paths[:S3CDN] = SiteSetting.Upload.s3_cdn_url if SiteSetting.Upload.s3_cdn_url.present?
|
|
paths[:S3BaseUrl] = Discourse.store.absolute_base_url
|
|
end
|
|
|
|
paths.to_json
|
|
end
|
|
|
|
# leaving this here, cause it invokes v8, don't want to implement twice
|
|
def self.avatar_img(avatar_template, size)
|
|
protect { v8.eval(<<~JS) }
|
|
__optInput = {};
|
|
__optInput.avatar_sizes = #{SiteSetting.avatar_sizes.to_json};
|
|
__paths = #{paths_json};
|
|
require("discourse-common/lib/avatar-utils").avatarImg({size: #{size.inspect}, avatarTemplate: #{avatar_template.inspect}}, __getURL);
|
|
JS
|
|
end
|
|
|
|
def self.unescape_emoji(title)
|
|
return title unless SiteSetting.enable_emoji? && title
|
|
|
|
set = SiteSetting.emoji_set.inspect
|
|
custom = Emoji.custom.map { |e| [e.name, e.url] }.to_h.to_json
|
|
|
|
protect { v8.eval(<<~JS) }
|
|
__paths = #{paths_json};
|
|
__performEmojiUnescape(#{title.inspect}, {
|
|
getURL: __getURL,
|
|
emojiSet: #{set},
|
|
emojiCDNUrl: "#{SiteSetting.external_emoji_url.blank? ? "" : SiteSetting.external_emoji_url}",
|
|
customEmoji: #{custom},
|
|
enableEmojiShortcuts: #{SiteSetting.enable_emoji_shortcuts},
|
|
inlineEmoji: #{SiteSetting.enable_inline_emoji_translation}
|
|
});
|
|
JS
|
|
end
|
|
|
|
def self.escape_emoji(title)
|
|
return unless title
|
|
|
|
replace_emoji_shortcuts = SiteSetting.enable_emoji && SiteSetting.enable_emoji_shortcuts
|
|
|
|
protect { v8.eval(<<~JS) }
|
|
__performEmojiEscape(#{title.inspect}, {
|
|
emojiShortcuts: #{replace_emoji_shortcuts},
|
|
inlineEmoji: #{SiteSetting.enable_inline_emoji_translation}
|
|
});
|
|
JS
|
|
end
|
|
|
|
def self.cook(text, opts = {})
|
|
options = opts.dup
|
|
working_text = text.dup
|
|
|
|
sanitized = markdown(working_text, options)
|
|
|
|
doc = Nokogiri::HTML5.fragment(sanitized)
|
|
|
|
add_nofollow = !options[:omit_nofollow] && SiteSetting.add_rel_nofollow_to_user_content
|
|
add_rel_attributes_to_user_content(doc, add_nofollow)
|
|
strip_hidden_unicode_bidirectional_characters(doc)
|
|
sanitize_hotlinked_media(doc)
|
|
|
|
add_mentions(doc, user_id: opts[:user_id]) if SiteSetting.enable_mentions
|
|
|
|
scrubber = Loofah::Scrubber.new { |node| node.remove if node.name == "script" }
|
|
loofah_fragment = Loofah.html5_fragment(doc.to_html)
|
|
loofah_fragment.scrub!(scrubber).to_html
|
|
end
|
|
|
|
def self.strip_hidden_unicode_bidirectional_characters(doc)
|
|
return if !DANGEROUS_BIDI_REGEXP.match?(doc.content)
|
|
|
|
doc
|
|
.css("code,pre")
|
|
.each do |code_tag|
|
|
next if !DANGEROUS_BIDI_REGEXP.match?(code_tag.content)
|
|
|
|
DANGEROUS_BIDI_CHARACTERS.each do |bidi|
|
|
next if !code_tag.content.include?(bidi)
|
|
|
|
formatted = "<U+#{bidi.ord.to_s(16).upcase}>"
|
|
code_tag.inner_html =
|
|
code_tag.inner_html.gsub(
|
|
bidi,
|
|
"<span class=\"bidi-warning\" title=\"#{I18n.t("post.hidden_bidi_character")}\">#{formatted}</span>",
|
|
)
|
|
end
|
|
end
|
|
end
|
|
|
|
def self.sanitize_hotlinked_media(doc)
|
|
return if !SiteSetting.block_hotlinked_media
|
|
|
|
allowed_pattern = allowed_src_pattern
|
|
|
|
doc
|
|
.css("img[src], source[src], source[srcset], track[src], div[data-video-src]")
|
|
.each do |el|
|
|
if el["src"] && !el["src"].match?(allowed_pattern)
|
|
el[PrettyText::BLOCKED_HOTLINKED_SRC_ATTR] = el.delete("src")
|
|
end
|
|
if el["data-video-src"] && !el["data-video-src"].match?(allowed_pattern)
|
|
el[PrettyText::BLOCKED_HOTLINKED_SRC_ATTR] = el["data-video-src"]
|
|
end
|
|
|
|
if el["srcset"]
|
|
srcs = el["srcset"].split(",").map { |e| e.split(" ", 2)[0].presence }
|
|
if srcs.any? { |src| !src.match?(allowed_pattern) }
|
|
el[PrettyText::BLOCKED_HOTLINKED_SRCSET_ATTR] = el.delete("srcset")
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
def self.add_rel_attributes_to_user_content(doc, add_nofollow)
|
|
allowlist = []
|
|
|
|
domains = SiteSetting.exclude_rel_nofollow_domains
|
|
allowlist = domains.split("|") if domains.present?
|
|
|
|
site_uri = nil
|
|
doc
|
|
.css("a")
|
|
.each do |l|
|
|
href = l["href"].to_s
|
|
l["rel"] = "noopener" if l["target"] == "_blank"
|
|
|
|
begin
|
|
uri = URI(UrlHelper.encode_component(href))
|
|
site_uri ||= URI(Discourse.base_url)
|
|
|
|
same_domain =
|
|
!uri.host.present? || uri.host == site_uri.host ||
|
|
uri.host.ends_with?(".#{site_uri.host}") ||
|
|
allowlist.any? { |u| uri.host == u || uri.host.ends_with?(".#{u}") }
|
|
|
|
l["rel"] = "noopener nofollow ugc" if add_nofollow && !same_domain
|
|
rescue URI::Error
|
|
# add a nofollow anyway
|
|
l["rel"] = "noopener nofollow ugc"
|
|
end
|
|
end
|
|
end
|
|
|
|
class DetectedLink < Struct.new(:url, :is_quote)
|
|
end
|
|
|
|
def self.extract_links(html)
|
|
links = []
|
|
doc = Nokogiri::HTML5.fragment(html)
|
|
|
|
# extract onebox links
|
|
doc
|
|
.css("aside.onebox[data-onebox-src]")
|
|
.each { |onebox| links << DetectedLink.new(onebox["data-onebox-src"], false) }
|
|
|
|
# remove href inside quotes & oneboxes & elided part
|
|
doc.css("aside.quote a, aside.onebox a, .elided a").remove
|
|
|
|
# remove hotlinked images
|
|
doc.css("a.onebox > img").each { |img| img.parent.remove }
|
|
|
|
# extract all links
|
|
doc
|
|
.css("a")
|
|
.each do |a|
|
|
links << DetectedLink.new(a["href"], false) if a["href"].present? && a["href"][0] != "#"
|
|
end
|
|
|
|
# extract quotes
|
|
doc
|
|
.css("aside.quote[data-topic]")
|
|
.each do |aside|
|
|
if aside["data-topic"].present?
|
|
url = +"/t/#{aside["data-topic"]}"
|
|
url << "/#{aside["data-post"]}" if aside["data-post"].present?
|
|
links << DetectedLink.new(url, true)
|
|
end
|
|
end
|
|
|
|
# extract Youtube links
|
|
doc
|
|
.css("div[data-video-id]")
|
|
.each do |div|
|
|
if div["data-video-id"].present? && div["data-provider-name"].present?
|
|
base_url =
|
|
case div["data-provider-name"]
|
|
when "youtube"
|
|
"https://www.youtube.com/watch?v="
|
|
when "vimeo"
|
|
"https://vimeo.com/"
|
|
when "tiktok"
|
|
"https://m.tiktok.com/v/"
|
|
end
|
|
links << DetectedLink.new(base_url + div["data-video-id"], false)
|
|
end
|
|
end
|
|
|
|
links
|
|
end
|
|
|
|
def self.extract_mentions(cooked)
|
|
mentions =
|
|
cooked
|
|
.css(".mention, .mention-group")
|
|
.map do |e|
|
|
if (name = e.inner_text)
|
|
name = name[1..-1]
|
|
name = User.normalize_username(name)
|
|
name
|
|
end
|
|
end
|
|
|
|
mentions =
|
|
DiscoursePluginRegistry.apply_modifier(:pretty_text_extract_mentions, mentions, cooked)
|
|
|
|
mentions.compact!
|
|
mentions.uniq!
|
|
mentions
|
|
end
|
|
|
|
def self.excerpt(html, max_length, options = {})
|
|
# TODO: properly fix this HACK in ExcerptParser without introducing XSS
|
|
doc = Nokogiri::HTML5.fragment(html)
|
|
DiscourseEvent.trigger(:reduce_excerpt, doc, options)
|
|
strip_image_wrapping(doc)
|
|
strip_oneboxed_media(doc)
|
|
convert_hashtag_links_to_plaintext(doc) if options[:plain_hashtags]
|
|
|
|
html = doc.to_html
|
|
ExcerptParser.get_excerpt(html, max_length, options)
|
|
end
|
|
|
|
def self.convert_hashtag_links_to_plaintext(doc)
|
|
doc
|
|
.css("a.hashtag-cooked")
|
|
.each { |hashtag| hashtag.replace("##{hashtag.attributes["data-slug"]}") }
|
|
end
|
|
|
|
def self.strip_links(string)
|
|
return string if string.blank?
|
|
|
|
# If the user is not basic, strip links from their bio
|
|
fragment = Nokogiri::HTML5.fragment(string)
|
|
fragment.css("a").each { |a| a.replace(a.inner_html) }
|
|
fragment.to_html
|
|
end
|
|
|
|
def self.make_all_links_absolute(doc)
|
|
site_uri = nil
|
|
doc
|
|
.css("a")
|
|
.each do |link|
|
|
href = link["href"].to_s
|
|
begin
|
|
uri = URI(href)
|
|
site_uri ||= URI(Discourse.base_url)
|
|
unless uri.host.present? || href.start_with?("mailto")
|
|
link["href"] = "#{site_uri}#{link["href"]}"
|
|
end
|
|
rescue URI::Error
|
|
# leave it
|
|
end
|
|
end
|
|
end
|
|
|
|
def self.strip_image_wrapping(doc)
|
|
doc.css(".lightbox-wrapper .meta").remove
|
|
end
|
|
|
|
def self.strip_oneboxed_media(doc)
|
|
doc.css("audio").remove
|
|
doc.css(".video-onebox,video").remove
|
|
end
|
|
|
|
def self.convert_vimeo_iframes(doc)
|
|
doc
|
|
.css("iframe[src*='player.vimeo.com']")
|
|
.each do |iframe|
|
|
if iframe["data-original-href"].present?
|
|
vimeo_url = UrlHelper.normalized_encode(iframe["data-original-href"])
|
|
else
|
|
vimeo_id = iframe["src"].split("/").last.sub("?h=", "/")
|
|
vimeo_url = "https://vimeo.com/#{vimeo_id}"
|
|
end
|
|
iframe.replace Nokogiri::HTML5.fragment("<p><a href='#{vimeo_url}'>#{vimeo_url}</a></p>")
|
|
end
|
|
end
|
|
|
|
def self.strip_secure_uploads(doc)
|
|
# images inside a lightbox or other link
|
|
doc
|
|
.css("a[href]")
|
|
.each do |a|
|
|
next if !Upload.secure_uploads_url?(a["href"])
|
|
|
|
non_image_media = %w[video audio].include?(a&.parent&.name)
|
|
target = non_image_media ? a.parent : a
|
|
if target.to_s.include?("stripped-secure-view-media") ||
|
|
target.to_s.include?("stripped-secure-view-upload")
|
|
next
|
|
end
|
|
|
|
next if a.css("img[src]").empty? && !non_image_media
|
|
|
|
if a.classes.include?("lightbox")
|
|
img = a.css("img[src]").first
|
|
srcset = img&.attributes["srcset"]&.value
|
|
if srcset
|
|
# if available, use the first image from the srcset here
|
|
# so we get the optimized image instead of the possibly huge original
|
|
url = srcset.split(",").first
|
|
else
|
|
url = img["src"]
|
|
end
|
|
a.add_next_sibling secure_uploads_placeholder(
|
|
doc,
|
|
url,
|
|
width: img["width"],
|
|
height: img["height"],
|
|
)
|
|
a.remove
|
|
else
|
|
width = non_image_media ? nil : a.at_css("img").attr("width")
|
|
height = non_image_media ? nil : a.at_css("img").attr("height")
|
|
target.add_next_sibling secure_uploads_placeholder(
|
|
doc,
|
|
a["href"],
|
|
width: width,
|
|
height: height,
|
|
)
|
|
target.remove
|
|
end
|
|
end
|
|
|
|
# images by themselves or inside a onebox
|
|
doc
|
|
.css("img[src]")
|
|
.each do |img|
|
|
url =
|
|
if img.parent.classes.include?("aspect-image") && img.attributes["srcset"].present?
|
|
# we are using the first image from the srcset here so we get the
|
|
# optimized image instead of the original, because an optimized
|
|
# image may be used for the onebox thumbnail
|
|
srcset = img.attributes["srcset"].value
|
|
srcset.split(",").first
|
|
else
|
|
img["src"]
|
|
end
|
|
|
|
width = img["width"]
|
|
height = img["height"]
|
|
onebox_type = nil
|
|
|
|
if img.ancestors.css(".onebox-body").any?
|
|
if img.classes.include?("onebox-avatar-inline")
|
|
onebox_type = "avatar-inline"
|
|
else
|
|
onebox_type = "thumbnail"
|
|
end
|
|
end
|
|
|
|
# we always want this to be tiny and without any special styles
|
|
if img.classes.include?("site-icon")
|
|
onebox_type = nil
|
|
width = 16
|
|
height = 16
|
|
end
|
|
|
|
if Upload.secure_uploads_url?(url)
|
|
img.add_next_sibling secure_uploads_placeholder(
|
|
doc,
|
|
url,
|
|
onebox_type: onebox_type,
|
|
width: width,
|
|
height: height,
|
|
)
|
|
img.remove
|
|
end
|
|
end
|
|
end
|
|
|
|
def self.secure_uploads_placeholder(doc, url, onebox_type: false, width: nil, height: nil)
|
|
data_width = width ? "data-width=#{width}" : ""
|
|
data_height = height ? "data-height=#{height}" : ""
|
|
data_onebox_type = onebox_type ? "data-onebox-type='#{onebox_type}'" : ""
|
|
<<~HTML
|
|
<div class="secure-upload-notice" data-stripped-secure-upload="#{url}" #{data_onebox_type} #{data_width} #{data_height}>
|
|
#{I18n.t("emails.secure_uploads_placeholder")} <a class='stripped-secure-view-upload' href="#{url}">#{I18n.t("emails.view_redacted_media")}</a>.
|
|
</div>
|
|
HTML
|
|
end
|
|
|
|
def self.format_for_email(html, post = nil)
|
|
doc = Nokogiri::HTML5.fragment(html)
|
|
DiscourseEvent.trigger(:reduce_cooked, doc, post)
|
|
strip_secure_uploads(doc) if post&.with_secure_uploads?
|
|
strip_image_wrapping(doc)
|
|
convert_vimeo_iframes(doc)
|
|
make_all_links_absolute(doc)
|
|
doc.to_html
|
|
end
|
|
|
|
protected
|
|
|
|
class JavaScriptError < StandardError
|
|
attr_accessor :message, :backtrace
|
|
|
|
def initialize(message, backtrace)
|
|
@message = message
|
|
@backtrace = backtrace
|
|
end
|
|
end
|
|
|
|
def self.protect
|
|
rval = nil
|
|
@mutex.synchronize { rval = yield }
|
|
rval
|
|
end
|
|
|
|
def self.ctx_load(ctx, *files)
|
|
files.each { |file| ctx.load(app_root + file) }
|
|
end
|
|
|
|
private
|
|
|
|
USER_TYPE ||= "user"
|
|
GROUP_TYPE ||= "group"
|
|
GROUP_MENTIONABLE_TYPE ||= "group-mentionable"
|
|
|
|
def self.add_mentions(doc, user_id: nil)
|
|
elements = doc.css("span.mention")
|
|
names = elements.map { |element| element.text[1..-1] }
|
|
|
|
mentions = lookup_mentions(names, user_id: user_id)
|
|
|
|
elements.each do |element|
|
|
name = element.text[1..-1]
|
|
name.downcase!
|
|
|
|
if type = mentions[name]
|
|
element.name = "a"
|
|
|
|
element.children = PrettyText::Helpers.format_username(element.children.text)
|
|
|
|
case type
|
|
when USER_TYPE
|
|
element["href"] = "#{Discourse.base_path}/u/#{UrlHelper.encode_component(name)}"
|
|
when GROUP_MENTIONABLE_TYPE
|
|
element["class"] = "mention-group notify"
|
|
element["href"] = "#{Discourse.base_path}/groups/#{UrlHelper.encode_component(name)}"
|
|
when GROUP_TYPE
|
|
element["class"] = "mention-group"
|
|
element["href"] = "#{Discourse.base_path}/groups/#{UrlHelper.encode_component(name)}"
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
def self.lookup_mentions(names, user_id: nil)
|
|
return {} if names.blank?
|
|
|
|
sql = <<~SQL
|
|
(
|
|
SELECT
|
|
:user_type AS type,
|
|
username_lower AS name
|
|
FROM users
|
|
WHERE username_lower IN (:names) AND staged = false
|
|
)
|
|
UNION
|
|
(
|
|
SELECT
|
|
:group_type AS type,
|
|
lower(name) AS name
|
|
FROM groups
|
|
)
|
|
UNION
|
|
(
|
|
SELECT
|
|
:group_mentionable_type AS type,
|
|
lower(name) AS name
|
|
FROM groups
|
|
WHERE lower(name) IN (:names) AND (#{Group.mentionable_sql_clause(include_public: false)})
|
|
)
|
|
ORDER BY type
|
|
SQL
|
|
|
|
user = User.find_by(id: user_id)
|
|
names.each(&:downcase!)
|
|
|
|
results =
|
|
DB.query(
|
|
sql,
|
|
names: names,
|
|
user_type: USER_TYPE,
|
|
group_type: GROUP_TYPE,
|
|
group_mentionable_type: GROUP_MENTIONABLE_TYPE,
|
|
levels: Group.alias_levels(user),
|
|
user_id: user_id,
|
|
)
|
|
|
|
mentions = {}
|
|
results.each { |result| mentions[result.name] = result.type }
|
|
mentions
|
|
end
|
|
|
|
def self.allowed_src_pattern
|
|
allowed_src_prefixes = [
|
|
Discourse.base_path,
|
|
Discourse.base_url,
|
|
GlobalSetting.s3_cdn_url,
|
|
GlobalSetting.cdn_url,
|
|
SiteSetting.external_emoji_url.presence,
|
|
*SiteSetting.block_hotlinked_media_exceptions.split("|"),
|
|
]
|
|
|
|
patterns =
|
|
allowed_src_prefixes.compact.map do |url|
|
|
pattern = Regexp.escape(url)
|
|
|
|
# If 'https://example.com' is allowed, ensure 'https://example.com.blah.com' is not
|
|
pattern += '(?:/|\z)' if !pattern.ends_with?("\/")
|
|
|
|
pattern
|
|
end
|
|
|
|
/\A(data:|#{patterns.join("|")})/
|
|
end
|
|
end
|