mirror of
https://git.kescher.at/CatCatNya/catstodon.git
synced 2024-11-23 23:58:06 +01:00
444796b69b
Conflicts: - app/controllers/application_controller.rb - app/controllers/auth/confirmations_controller.rb - app/controllers/auth/sessions_controller.rb - app/controllers/settings/deletes_controller.rb - app/controllers/settings/two_factor_authentication/recovery_codes_controller.rb
389 lines
12 KiB
Ruby
389 lines
12 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'singleton'
|
|
require_relative './sanitize_config'
|
|
|
|
class HTMLRenderer < Redcarpet::Render::HTML
|
|
def block_code(code, language)
|
|
"<pre><code>#{encode(code).gsub("\n", "<br/>")}</code></pre>"
|
|
end
|
|
|
|
def autolink(link, link_type)
|
|
return link if link_type == :email
|
|
Formatter.instance.link_url(link)
|
|
end
|
|
|
|
private
|
|
|
|
def html_entities
|
|
@html_entities ||= HTMLEntities.new
|
|
end
|
|
|
|
def encode(html)
|
|
html_entities.encode(html)
|
|
end
|
|
end
|
|
|
|
class Formatter
|
|
include Singleton
|
|
include RoutingHelper
|
|
|
|
include ActionView::Helpers::TextHelper
|
|
|
|
def format(status, **options)
|
|
if status.reblog?
|
|
prepend_reblog = status.reblog.account.acct
|
|
status = status.proper
|
|
else
|
|
prepend_reblog = false
|
|
end
|
|
|
|
raw_content = status.text
|
|
|
|
if options[:inline_poll_options] && status.preloadable_poll
|
|
raw_content = raw_content + "\n\n" + status.preloadable_poll.options.map { |title| "[ ] #{title}" }.join("\n")
|
|
end
|
|
|
|
return '' if raw_content.blank?
|
|
|
|
unless status.local?
|
|
html = reformat(raw_content)
|
|
html = encode_custom_emojis(html, status.emojis, options[:autoplay]) if options[:custom_emojify]
|
|
return html.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
linkable_accounts = status.active_mentions.map(&:account)
|
|
linkable_accounts << status.account
|
|
|
|
html = raw_content
|
|
html = "RT @#{prepend_reblog} #{html}" if prepend_reblog
|
|
html = format_markdown(html) if status.content_type == 'text/markdown'
|
|
html = encode_and_link_urls(html, linkable_accounts, keep_html: %w(text/markdown text/html).include?(status.content_type))
|
|
html = reformat(html) if %w(text/markdown text/html).include?(status.content_type)
|
|
html = encode_custom_emojis(html, status.emojis, options[:autoplay]) if options[:custom_emojify]
|
|
|
|
unless %w(text/markdown text/html).include?(status.content_type)
|
|
html = simple_format(html, {}, sanitize: false)
|
|
html = html.delete("\n")
|
|
end
|
|
|
|
html.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
def format_markdown(html)
|
|
html = markdown_formatter.render(html)
|
|
html.delete("\r").delete("\n")
|
|
end
|
|
|
|
def reformat(html)
|
|
sanitize(html, Sanitize::Config::MASTODON_STRICT)
|
|
end
|
|
|
|
def plaintext(status)
|
|
return status.text if status.local?
|
|
|
|
text = status.text.gsub(/(<br \/>|<br>|<\/p>)+/) { |match| "#{match}\n" }
|
|
strip_tags(text)
|
|
end
|
|
|
|
def simplified_format(account, **options)
|
|
html = account.local? ? linkify(account.note) : reformat(account.note)
|
|
html = encode_custom_emojis(html, account.emojis, options[:autoplay]) if options[:custom_emojify]
|
|
html.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
def sanitize(html, config)
|
|
Sanitize.fragment(html, config)
|
|
end
|
|
|
|
def format_spoiler(status, **options)
|
|
html = encode(status.spoiler_text)
|
|
html = encode_custom_emojis(html, status.emojis, options[:autoplay])
|
|
html.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
def format_poll_option(status, option, **options)
|
|
html = encode(option.title)
|
|
html = encode_custom_emojis(html, status.emojis, options[:autoplay])
|
|
html.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
def format_display_name(account, **options)
|
|
html = encode(account.display_name.presence || account.username)
|
|
html = encode_custom_emojis(html, account.emojis, options[:autoplay]) if options[:custom_emojify]
|
|
html.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
def format_field(account, str, **options)
|
|
return reformat(str).html_safe unless account.local? # rubocop:disable Rails/OutputSafety
|
|
html = encode_and_link_urls(str, me: true)
|
|
html = encode_custom_emojis(html, account.emojis, options[:autoplay]) if options[:custom_emojify]
|
|
html.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
def linkify(text)
|
|
html = encode_and_link_urls(text)
|
|
html = simple_format(html, {}, sanitize: false)
|
|
html = html.delete("\n")
|
|
|
|
html.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
def link_url(url)
|
|
"<a href=\"#{encode(url)}\" target=\"blank\" rel=\"nofollow noopener\">#{link_html(url)}</a>"
|
|
end
|
|
|
|
private
|
|
|
|
def markdown_formatter
|
|
extensions = {
|
|
autolink: true,
|
|
no_intra_emphasis: true,
|
|
fenced_code_blocks: true,
|
|
disable_indented_code_blocks: true,
|
|
strikethrough: true,
|
|
lax_spacing: true,
|
|
space_after_headers: true,
|
|
superscript: true,
|
|
underline: true,
|
|
highlight: true,
|
|
footnotes: false,
|
|
}
|
|
|
|
renderer = HTMLRenderer.new({
|
|
filter_html: false,
|
|
escape_html: false,
|
|
no_images: true,
|
|
no_styles: true,
|
|
safe_links_only: true,
|
|
hard_wrap: true,
|
|
link_attributes: { target: '_blank', rel: 'nofollow noopener' },
|
|
})
|
|
|
|
Redcarpet::Markdown.new(renderer, extensions)
|
|
end
|
|
|
|
def html_entities
|
|
@html_entities ||= HTMLEntities.new
|
|
end
|
|
|
|
def encode(html)
|
|
html_entities.encode(html)
|
|
end
|
|
|
|
def encode_and_link_urls(html, accounts = nil, options = {})
|
|
if accounts.is_a?(Hash)
|
|
options = accounts
|
|
accounts = nil
|
|
end
|
|
|
|
entities = options[:keep_html] ? html_friendly_extractor(html) : utf8_friendly_extractor(html, extract_url_without_protocol: false)
|
|
|
|
rewrite(html.dup, entities, options[:keep_html]) do |entity|
|
|
if entity[:url]
|
|
link_to_url(entity, options)
|
|
elsif entity[:hashtag]
|
|
link_to_hashtag(entity)
|
|
elsif entity[:screen_name]
|
|
link_to_mention(entity, accounts)
|
|
end
|
|
end
|
|
end
|
|
|
|
def count_tag_nesting(tag)
|
|
if tag[1] == '/' then -1
|
|
elsif tag[-2] == '/' then 0
|
|
else 1
|
|
end
|
|
end
|
|
|
|
def encode_custom_emojis(html, emojis, animate = false)
|
|
return html if emojis.empty?
|
|
|
|
emoji_map = emojis.each_with_object({}) { |e, h| h[e.shortcode] = [full_asset_url(e.image.url), full_asset_url(e.image.url(:static))] }
|
|
|
|
i = -1
|
|
tag_open_index = nil
|
|
inside_shortname = false
|
|
shortname_start_index = -1
|
|
invisible_depth = 0
|
|
|
|
while i + 1 < html.size
|
|
i += 1
|
|
|
|
if invisible_depth.zero? && inside_shortname && html[i] == ':'
|
|
shortcode = html[shortname_start_index + 1..i - 1]
|
|
emoji = emoji_map[shortcode]
|
|
|
|
if emoji
|
|
original_url, static_url = emoji
|
|
replacement = begin
|
|
if animate
|
|
"<img draggable=\"false\" class=\"emojione\" alt=\":#{encode(shortcode)}:\" title=\":#{encode(shortcode)}:\" src=\"#{encode(original_url)}\" />"
|
|
else
|
|
"<img draggable=\"false\" class=\"emojione custom-emoji\" alt=\":#{encode(shortcode)}:\" title=\":#{encode(shortcode)}:\" src=\"#{encode(static_url)}\" data-original=\"#{original_url}\" data-static=\"#{static_url}\" />"
|
|
end
|
|
end
|
|
before_html = shortname_start_index.positive? ? html[0..shortname_start_index - 1] : ''
|
|
html = before_html + replacement + html[i + 1..-1]
|
|
i += replacement.size - (shortcode.size + 2) - 1
|
|
else
|
|
i -= 1
|
|
end
|
|
|
|
inside_shortname = false
|
|
elsif tag_open_index && html[i] == '>'
|
|
tag = html[tag_open_index..i]
|
|
tag_open_index = nil
|
|
if invisible_depth.positive?
|
|
invisible_depth += count_tag_nesting(tag)
|
|
elsif tag == '<span class="invisible">'
|
|
invisible_depth = 1
|
|
end
|
|
elsif html[i] == '<'
|
|
tag_open_index = i
|
|
inside_shortname = false
|
|
elsif !tag_open_index && html[i] == ':'
|
|
inside_shortname = true
|
|
shortname_start_index = i
|
|
end
|
|
end
|
|
|
|
html
|
|
end
|
|
|
|
def rewrite(text, entities, keep_html = false)
|
|
text = text.to_s
|
|
|
|
# Sort by start index
|
|
entities = entities.sort_by do |entity|
|
|
indices = entity.respond_to?(:indices) ? entity.indices : entity[:indices]
|
|
indices.first
|
|
end
|
|
|
|
result = []
|
|
|
|
last_index = entities.reduce(0) do |index, entity|
|
|
indices = entity.respond_to?(:indices) ? entity.indices : entity[:indices]
|
|
result << (keep_html ? text[index...indices.first] : encode(text[index...indices.first]))
|
|
result << yield(entity)
|
|
indices.last
|
|
end
|
|
|
|
result << (keep_html ? text[last_index..-1] : encode(text[last_index..-1]))
|
|
|
|
result.flatten.join
|
|
end
|
|
|
|
UNICODE_ESCAPE_BLACKLIST_RE = /\p{Z}|\p{P}/
|
|
|
|
def utf8_friendly_extractor(text, options = {})
|
|
old_to_new_index = [0]
|
|
|
|
escaped = text.chars.map do |c|
|
|
output = begin
|
|
if c.ord.to_s(16).length > 2 && UNICODE_ESCAPE_BLACKLIST_RE.match(c).nil?
|
|
CGI.escape(c)
|
|
else
|
|
c
|
|
end
|
|
end
|
|
|
|
old_to_new_index << old_to_new_index.last + output.length
|
|
|
|
output
|
|
end.join
|
|
|
|
# Note: I couldn't obtain list_slug with @user/list-name format
|
|
# for mention so this requires additional check
|
|
special = Extractor.extract_urls_with_indices(escaped, options).map do |extract|
|
|
new_indices = [
|
|
old_to_new_index.find_index(extract[:indices].first),
|
|
old_to_new_index.find_index(extract[:indices].last),
|
|
]
|
|
|
|
next extract.merge(
|
|
indices: new_indices,
|
|
url: text[new_indices.first..new_indices.last - 1]
|
|
)
|
|
end
|
|
|
|
standard = Extractor.extract_entities_with_indices(text, options)
|
|
|
|
Extractor.remove_overlapping_entities(special + standard)
|
|
end
|
|
|
|
def html_friendly_extractor(html, options = {})
|
|
gaps = []
|
|
total_offset = 0
|
|
|
|
escaped = html.gsub(/<[^>]*>|&#[0-9]+;/) do |match|
|
|
total_offset += match.length - 1
|
|
end_offset = Regexp.last_match.end(0)
|
|
gaps << [end_offset - total_offset, total_offset]
|
|
"\u200b"
|
|
end
|
|
|
|
entities = Extractor.extract_hashtags_with_indices(escaped, :check_url_overlap => false) +
|
|
Extractor.extract_mentions_or_lists_with_indices(escaped)
|
|
Extractor.remove_overlapping_entities(entities).map do |extract|
|
|
pos = extract[:indices].first
|
|
offset_idx = gaps.rindex { |gap| gap.first <= pos }
|
|
offset = offset_idx.nil? ? 0 : gaps[offset_idx].last
|
|
next extract.merge(
|
|
:indices => [extract[:indices].first + offset, extract[:indices].last + offset]
|
|
)
|
|
end
|
|
end
|
|
|
|
def link_to_url(entity, options = {})
|
|
url = Addressable::URI.parse(entity[:url])
|
|
html_attrs = { target: '_blank', rel: 'nofollow noopener' }
|
|
|
|
html_attrs[:rel] = "me #{html_attrs[:rel]}" if options[:me]
|
|
|
|
Twitter::Autolink.send(:link_to_text, entity, link_html(entity[:url]), url, html_attrs)
|
|
rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
|
|
encode(entity[:url])
|
|
end
|
|
|
|
def link_to_mention(entity, linkable_accounts)
|
|
acct = entity[:screen_name]
|
|
|
|
return link_to_account(acct) unless linkable_accounts
|
|
|
|
account = linkable_accounts.find { |item| TagManager.instance.same_acct?(item.acct, acct) }
|
|
account ? mention_html(account) : "@#{encode(acct)}"
|
|
end
|
|
|
|
def link_to_account(acct)
|
|
username, domain = acct.split('@')
|
|
|
|
domain = nil if TagManager.instance.local_domain?(domain)
|
|
account = EntityCache.instance.mention(username, domain)
|
|
|
|
account ? mention_html(account) : "@#{encode(acct)}"
|
|
end
|
|
|
|
def link_to_hashtag(entity)
|
|
hashtag_html(entity[:hashtag])
|
|
end
|
|
|
|
def link_html(url)
|
|
url = Addressable::URI.parse(url).to_s
|
|
prefix = url.match(/\Ahttps?:\/\/(www\.)?/).to_s
|
|
text = url[prefix.length, 30]
|
|
suffix = url[prefix.length + 30..-1]
|
|
cutoff = url[prefix.length..-1].length > 30
|
|
|
|
"<span class=\"invisible\">#{encode(prefix)}</span><span class=\"#{cutoff ? 'ellipsis' : ''}\">#{encode(text)}</span><span class=\"invisible\">#{encode(suffix)}</span>"
|
|
end
|
|
|
|
def hashtag_html(tag)
|
|
"<a href=\"#{encode(tag_url(tag.downcase))}\" class=\"mention hashtag\" rel=\"tag\">#<span>#{encode(tag)}</span></a>"
|
|
end
|
|
|
|
def mention_html(account)
|
|
"<span class=\"h-card\"><a href=\"#{encode(ActivityPub::TagManager.instance.url_for(account))}\" class=\"u-url mention\">@<span>#{encode(account.username)}</span></a></span>"
|
|
end
|
|
end
|