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Add support for editing for published statuses (#16697)

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* Add support for editing for published statuses

* Fix references to stripped-out code

* Various fixes and improvements

* Further fixes and improvements

* Fix updates being potentially sent to unauthorized recipients

* Various fixes and improvements

* Fix wrong words in test

* Fix notifying accounts that were tagged but were not in the audience

* Fix mistake
This commit is contained in:
Eugen Rochko
2022-01-19 22:37:27 +01:00
committed by GitHub
parent 2d1f082bb6
commit 1060666c58
56 changed files with 1415 additions and 574 deletions
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275
app/services/activitypub/process_status_update_service.rb Normal file
View File

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# frozen_string_literal: true
class ActivityPub::ProcessStatusUpdateService < BaseService
include JsonLdHelper
def call(status, json)
@json = json
@status_parser = ActivityPub::Parser::StatusParser.new(@json)
@uri = @status_parser.uri
@status = status
@account = status.account
@media_attachments_changed = false
# Only native types can be updated at the moment
return if !expected_type? || already_updated_more_recently?
# Only allow processing one create/update per status at a time
RedisLock.acquire(lock_options) do |lock|
if lock.acquired?
Status.transaction do
create_previous_edit!
update_media_attachments!
update_poll!
update_immediate_attributes!
update_metadata!
create_edit!
end
queue_poll_notifications!
reset_preview_card!
broadcast_updates!
else
raise Mastodon::RaceConditionError
end
end
end
private
def update_media_attachments!
previous_media_attachments = @status.media_attachments.to_a
next_media_attachments = []
as_array(@json['attachment']).each do |attachment|
media_attachment_parser = ActivityPub::Parser::MediaAttachmentParser.new(attachment)
next if media_attachment_parser.remote_url.blank? || next_media_attachments.size > 4
begin
media_attachment = previous_media_attachments.find { |previous_media_attachment| previous_media_attachment.remote_url == media_attachment_parser.remote_url }
media_attachment ||= MediaAttachment.new(account: @account, remote_url: media_attachment_parser.remote_url)
# If a previously existing media attachment was significantly updated, mark
# media attachments as changed even if none were added or removed
if media_attachment_parser.significantly_changes?(media_attachment)
@media_attachments_changed = true
end
media_attachment.description = media_attachment_parser.description
media_attachment.focus = media_attachment_parser.focus
media_attachment.thumbnail_remote_url = media_attachment_parser.thumbnail_remote_url
media_attachment.blurhash = media_attachment_parser.blurhash
media_attachment.save!
next_media_attachments << media_attachment
next if unsupported_media_type?(media_attachment_parser.file_content_type) || skip_download?
RedownloadMediaWorker.perform_async(media_attachment.id) if media_attachment.remote_url_previously_changed? || media_attachment.thumbnail_remote_url_previously_changed?
rescue Addressable::URI::InvalidURIError => e
Rails.logger.debug "Invalid URL in attachment: #{e}"
end
end
removed_media_attachments = previous_media_attachments - next_media_attachments
added_media_attachments = next_media_attachments - previous_media_attachments
MediaAttachment.where(id: removed_media_attachments.map(&:id)).update_all(status_id: nil)
MediaAttachment.where(id: added_media_attachments.map(&:id)).update_all(status_id: @status.id)
@media_attachments_changed = true if removed_media_attachments.positive? || added_media_attachments.positive?
end
def update_poll!
previous_poll = @status.preloadable_poll
@previous_expires_at = previous_poll&.expires_at
poll_parser = ActivityPub::Parser::PollParser.new(@json)
if poll_parser.valid?
poll = previous_poll || @account.polls.new(status: @status)
# If for some reasons the options were changed, it invalidates all previous
# votes, so we need to remove them
if poll_parser.significantly_changes?(poll)
@media_attachments_changed = true
poll.votes.delete_all unless poll.new_record?
end
poll.last_fetched_at = Time.now.utc
poll.options = poll_parser.options
poll.multiple = poll_parser.multiple
poll.expires_at = poll_parser.expires_at
poll.voters_count = poll_parser.voters_count
poll.cached_tallies = poll_parser.cached_tallies
poll.save!
@status.poll_id = poll.id
elsif previous_poll.present?
previous_poll.destroy!
@media_attachments_changed = true
@status.poll_id = nil
end
end
def update_immediate_attributes!
@status.text = @status_parser.text || ''
@status.spoiler_text = @status_parser.spoiler_text || ''
@status.sensitive = @account.sensitized? || @status_parser.sensitive || false
@status.language = @status_parser.language || detected_language
@status.edited_at = @status_parser.edited_at || Time.now.utc
@status.save!
end
def update_metadata!
@raw_tags = []
@raw_mentions = []
@raw_emojis = []
as_array(@json['tag']).each do |tag|
if equals_or_includes?(tag['type'], 'Hashtag')
@raw_tags << tag['name']
elsif equals_or_includes?(tag['type'], 'Mention')
@raw_mentions << tag['href']
elsif equals_or_includes?(tag['type'], 'Emoji')
@raw_emojis << tag
end
end
update_tags!
update_mentions!
update_emojis!
end
def update_tags!
@status.tags = Tag.find_or_create_by_names(@raw_tags)
end
def update_mentions!
previous_mentions = @status.active_mentions.includes(:account).to_a
current_mentions = []
@raw_mentions.each do |href|
next if href.blank?
account = ActivityPub::TagManager.instance.uri_to_resource(href, Account)
account ||= ActivityPub::FetchRemoteAccountService.new.call(href)
next if account.nil?
mention = previous_mentions.find { |x| x.account_id == account.id }
mention ||= account.mentions.new(status: @status)
current_mentions << mention
end
current_mentions.each do |mention|
mention.save if mention.new_record?
end
# If previous mentions are no longer contained in the text, convert them
# to silent mentions, since withdrawing access from someone who already
# received a notification might be more confusing
removed_mentions = previous_mentions - current_mentions
Mention.where(id: removed_mentions.map(&:id)).update_all(silent: true) unless removed_mentions.empty?
end
def update_emojis!
return if skip_download?
@raw_emojis.each do |raw_emoji|
custom_emoji_parser = ActivityPub::Parser::CustomEmojiParser.new(raw_emoji)
next if custom_emoji_parser.shortcode.blank? || custom_emoji_parser.image_remote_url.blank?
emoji = CustomEmoji.find_by(shortcode: custom_emoji_parser.shortcode, domain: @account.domain)
next unless emoji.nil? || custom_emoji_parser.image_remote_url != emoji.image_remote_url || (custom_emoji_parser.updated_at && custom_emoji_parser.updated_at >= emoji.updated_at)
begin
emoji ||= CustomEmoji.new(domain: @account.domain, shortcode: custom_emoji_parser.shortcode, uri: custom_emoji_parser.uri)
emoji.image_remote_url = custom_emoji_parser.image_remote_url
emoji.save
rescue Seahorse::Client::NetworkingError => e
Rails.logger.warn "Error storing emoji: #{e}"
end
end
end
def expected_type?
equals_or_includes_any?(@json['type'], %w(Note Question))
end
def lock_options
{ redis: Redis.current, key: "create:#{@uri}", autorelease: 15.minutes.seconds }
end
def detected_language
LanguageDetector.instance.detect(@status_parser.text, @account)
end
def create_previous_edit!
# We only need to create a previous edit when no previous edits exist, e.g.
# when the status has never been edited. For other cases, we always create
# an edit, so the step can be skipped
return if @status.edits.any?
@status.edits.create(
text: @status.text,
spoiler_text: @status.spoiler_text,
media_attachments_changed: false,
account_id: @account.id,
created_at: @status.created_at
)
end
def create_edit!
return unless @status.text_previously_changed? || @status.spoiler_text_previously_changed? || @media_attachments_changed
@status_edit = @status.edits.create(
text: @status.text,
spoiler_text: @status.spoiler_text,
media_attachments_changed: @media_attachments_changed,
account_id: @account.id,
created_at: @status.edited_at
)
end
def skip_download?
return @skip_download if defined?(@skip_download)
@skip_download ||= DomainBlock.reject_media?(@account.domain)
end
def unsupported_media_type?(mime_type)
mime_type.present? && !MediaAttachment.supported_mime_types.include?(mime_type)
end
def already_updated_more_recently?
@status.edited_at.present? && @status_parser.edited_at.present? && @status.edited_at > @status_parser.edited_at
end
def reset_preview_card!
@status.preview_cards.clear if @status.text_previously_changed? || @status.spoiler_text.present?
LinkCrawlWorker.perform_in(rand(1..59).seconds, @status.id) if @status.spoiler_text.blank?
end
def broadcast_updates!
::DistributionWorker.perform_async(@status.id, update: true)
end
def queue_poll_notifications!
poll = @status.preloadable_poll
# If the poll had no expiration date set but now has, or now has a sooner
# expiration date, and people have voted, schedule a notification
return unless poll.present? && poll.expires_at.present? && poll.votes.exists?
PollExpirationNotifyWorker.remove_from_scheduled(poll.id) if @previous_expires_at.present? && @previous_expires_at > poll.expires_at
PollExpirationNotifyWorker.perform_at(poll.expires_at + 5.minutes, poll.id)
end
end