Add semi-support for Video/Image objects in ActivityPub (#5848)
* Add semi-support for Video/Image objects in ActivityPub Video and Image objects will create corresponding status records with manually crafted text contents (title + URL) * Extract html-url-finding logic into JsonLdHelper * Fallback to id when url missing, extract supported object typespull/5858/head
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@ -9,6 +9,24 @@ module JsonLdHelper
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value.is_a?(Array) ? value.first : value
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end
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# The url attribute can be a string, an array of strings, or an array of objects.
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# The objects could include a mimeType. Not-included mimeType means it's text/html.
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def url_to_href(value, preferred_type = nil)
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single_value = if value.is_a?(Array) && !value.first.is_a?(String)
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value.find { |link| preferred_type.nil? || ((link['mimeType'].presence || 'text/html') == preferred_type) }
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elsif value.is_a?(Array)
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value.first
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else
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value
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end
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if single_value.nil? || single_value.is_a?(String)
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single_value
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else
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single_value['href']
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end
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end
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def as_array(value)
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value.is_a?(Array) ? value : [value]
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end
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@ -1,6 +1,9 @@
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# frozen_string_literal: true
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class ActivityPub::Activity::Create < ActivityPub::Activity
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SUPPORTED_TYPES = %w(Article Note).freeze
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CONVERTED_TYPES = %w(Image Video).freeze
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def perform
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return if delete_arrived_first?(object_uri) || unsupported_object_type?
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@ -41,7 +44,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
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url: object_url || @object['id'],
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account: @account,
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text: text_from_content || '',
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language: language_from_content,
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language: detected_language,
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spoiler_text: @object['summary'] || '',
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created_at: @options[:override_timestamps] ? nil : @object['published'],
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reply: @object['inReplyTo'].present?,
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@ -165,40 +168,62 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
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end
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def text_from_content
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return Formatter.instance.linkify([text_from_name, object_url || @object['id']].join(' ')) if converted_object_type?
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if @object['content'].present?
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@object['content']
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elsif language_map?
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elsif content_language_map?
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@object['contentMap'].values.first
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end
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end
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def language_from_content
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return LanguageDetector.instance.detect(text_from_content, @account) unless language_map?
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@object['contentMap'].keys.first
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def text_from_name
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if @object['name'].present?
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@object['name']
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elsif name_language_map?
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@object['nameMap'].values.first
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end
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end
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def detected_language
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if content_language_map?
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@object['contentMap'].keys.first
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elsif name_language_map?
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@object['nameMap'].keys.first
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elsif supported_object_type?
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LanguageDetector.instance.detect(text_from_content, @account)
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end
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end
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def object_url
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return if @object['url'].blank?
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value = first_of_value(@object['url'])
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return value if value.is_a?(String)
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value['href']
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url_to_href(@object['url'], 'text/html')
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end
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def language_map?
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def content_language_map?
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@object['contentMap'].is_a?(Hash) && !@object['contentMap'].empty?
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end
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def name_language_map?
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@object['nameMap'].is_a?(Hash) && !@object['nameMap'].empty?
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end
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def unsupported_object_type?
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@object.is_a?(String) || !%w(Article Note).include?(@object['type'])
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@object.is_a?(String) || !(supported_object_type? || converted_object_type?)
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end
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def unsupported_media_type?(mime_type)
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mime_type.present? && !(MediaAttachment::IMAGE_MIME_TYPES + MediaAttachment::VIDEO_MIME_TYPES).include?(mime_type)
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end
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def supported_object_type?
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SUPPORTED_TYPES.include?(@object['type'])
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end
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def converted_object_type?
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CONVERTED_TYPES.include?(@object['type'])
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end
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def skip_download?
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return @skip_download if defined?(@skip_download)
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@skip_download ||= DomainBlock.find_by(domain: @account.domain)&.reject_media?
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@ -51,12 +51,7 @@ class Formatter
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def simplified_format(account)
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return reformat(account.note).html_safe unless account.local? # rubocop:disable Rails/OutputSafety
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html = encode_and_link_urls(account.note)
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html = simple_format(html, {}, sanitize: false)
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html = html.delete("\n")
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html.html_safe # rubocop:disable Rails/OutputSafety
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linkify(account.note)
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end
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def sanitize(html, config)
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@ -69,6 +64,14 @@ class Formatter
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html.html_safe # rubocop:disable Rails/OutputSafety
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end
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def linkify(text)
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html = encode_and_link_urls(text)
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html = simple_format(html, {}, sanitize: false)
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html = html.delete("\n")
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html.html_safe # rubocop:disable Rails/OutputSafety
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end
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private
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def encode(html)
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@ -42,7 +42,7 @@ class ActivityPub::FetchRemoteStatusService < BaseService
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end
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def expected_type?
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%w(Note Article).include? @json['type']
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(ActivityPub::Activity::Create::SUPPORTED_TYPES + ActivityPub::Activity::Create::CONVERTED_TYPES).include? @json['type']
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end
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def needs_update(actor)
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@ -107,12 +107,7 @@ class ActivityPub::ProcessAccountService < BaseService
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def url
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return if @json['url'].blank?
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value = first_of_value(@json['url'])
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return value if value.is_a?(String)
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value['href']
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url_to_href(@json['url'], 'text/html')
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end
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def outbox_total_items
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@ -1,6 +1,8 @@
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require 'rails_helper'
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RSpec.describe ActivityPub::FetchRemoteStatusService do
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include ActionView::Helpers::TextHelper
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let(:sender) { Fabricate(:account) }
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let(:recipient) { Fabricate(:account) }
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let(:valid_domain) { Rails.configuration.x.local_domain }
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@ -19,6 +21,7 @@ RSpec.describe ActivityPub::FetchRemoteStatusService do
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describe '#call' do
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before do
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stub_request(:head, 'https://example.com/watch?v=12345').to_return(status: 404, body: '')
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subject.call(object[:id], prefetched_body: Oj.dump(object))
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end
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@ -32,5 +35,38 @@ RSpec.describe ActivityPub::FetchRemoteStatusService do
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expect(status.text).to eq 'Lorem ipsum'
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end
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end
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context 'with Video object' do
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let(:object) do
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{
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'@context': 'https://www.w3.org/ns/activitystreams',
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id: "https://#{valid_domain}/@foo/1234",
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type: 'Video',
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name: 'Nyan Cat 10 hours remix',
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attributedTo: ActivityPub::TagManager.instance.uri_for(sender),
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url: [
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{
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type: 'Link',
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mimeType: 'application/x-bittorrent',
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href: 'https://example.com/12345.torrent',
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},
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{
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type: 'Link',
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mimeType: 'text/html',
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href: 'https://example.com/watch?v=12345',
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},
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],
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}
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end
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it 'creates status' do
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status = sender.statuses.first
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expect(status).to_not be_nil
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expect(status.url).to eq 'https://example.com/watch?v=12345'
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expect(strip_tags(status.text)).to eq 'Nyan Cat 10 hours remix https://example.com/watch?v=12345'
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end
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end
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end
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end
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