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mastodon/app/lib/activitypub/activity/create.rb
Eugen Rochko 74081433d0
Change trending hashtags to be affected be reblogs (#16164)
If a status with a hashtag becomes very popular, it stands to
reason that the hashtag should have a chance at trending

Fix no stats being recorded for hashtags that are not allowed
to trend, and stop ignoring bots

Remove references to hashtags in profile directory from the code
and the admin UI
2021-05-07 14:33:43 +02:00

503 lines
15 KiB
Ruby

# frozen_string_literal: true
class ActivityPub::Activity::Create < ActivityPub::Activity
def perform
dereference_object!
case @object['type']
when 'EncryptedMessage'
create_encrypted_message
else
create_status
end
end
private
def create_encrypted_message
return reject_payload! if invalid_origin?(object_uri) || @options[:delivered_to_account_id].blank?
target_account = Account.find(@options[:delivered_to_account_id])
target_device = target_account.devices.find_by(device_id: @object.dig('to', 'deviceId'))
return if target_device.nil?
target_device.encrypted_messages.create!(
from_account: @account,
from_device_id: @object.dig('attributedTo', 'deviceId'),
type: @object['messageType'],
body: @object['cipherText'],
digest: @object.dig('digest', 'digestValue'),
message_franking: message_franking.to_token
)
end
def message_franking
MessageFranking.new(
hmac: @object.dig('digest', 'digestValue'),
original_franking: @object['messageFranking'],
source_account_id: @account.id,
target_account_id: @options[:delivered_to_account_id],
timestamp: Time.now.utc
)
end
def create_status
return reject_payload! if unsupported_object_type? || invalid_origin?(object_uri) || tombstone_exists? || !related_to_local_activity?
lock_or_fail("create:#{object_uri}") do
return if delete_arrived_first?(object_uri) || poll_vote? # rubocop:disable Lint/NonLocalExitFromIterator
@status = find_existing_status
if @status.nil?
process_status
elsif @options[:delivered_to_account_id].present?
postprocess_audience_and_deliver
end
end
@status
end
def audience_to
as_array(@object['to'] || @json['to']).map { |x| value_or_id(x) }
end
def audience_cc
as_array(@object['cc'] || @json['cc']).map { |x| value_or_id(x) }
end
def process_status
@tags = []
@mentions = []
@params = {}
process_status_params
process_tags
process_audience
ApplicationRecord.transaction do
@status = Status.create!(@params)
attach_tags(@status)
end
resolve_thread(@status)
fetch_replies(@status)
distribute(@status)
forward_for_reply
end
def find_existing_status
status = status_from_uri(object_uri)
status ||= Status.find_by(uri: @object['atomUri']) if @object['atomUri'].present?
status
end
def process_status_params
@params = begin
{
uri: object_uri,
url: object_url || object_uri,
account: @account,
text: text_from_content || '',
language: detected_language,
spoiler_text: converted_object_type? ? '' : (text_from_summary || ''),
created_at: @object['published'],
override_timestamps: @options[:override_timestamps],
reply: @object['inReplyTo'].present?,
sensitive: @account.sensitized? || @object['sensitive'] || false,
visibility: visibility_from_audience,
thread: replied_to_status,
conversation: conversation_from_uri(@object['conversation']),
media_attachment_ids: process_attachments.take(4).map(&:id),
poll: process_poll,
}
end
end
def process_audience
(audience_to + audience_cc).uniq.each do |audience|
next if ActivityPub::TagManager.instance.public_collection?(audience)
# Unlike with tags, there is no point in resolving accounts we don't already
# know here, because silent mentions would only be used for local access
# control anyway
account = account_from_uri(audience)
next if account.nil? || @mentions.any? { |mention| mention.account_id == account.id }
@mentions << Mention.new(account: account, silent: true)
# If there is at least one silent mention, then the status can be considered
# as a limited-audience status, and not strictly a direct message, but only
# if we considered a direct message in the first place
next unless @params[:visibility] == :direct
@params[:visibility] = :limited
end
# If the payload was delivered to a specific inbox, the inbox owner must have
# access to it, unless they already have access to it anyway
return if @options[:delivered_to_account_id].nil? || @mentions.any? { |mention| mention.account_id == @options[:delivered_to_account_id] }
@mentions << Mention.new(account_id: @options[:delivered_to_account_id], silent: true)
return unless @params[:visibility] == :direct
@params[:visibility] = :limited
end
def postprocess_audience_and_deliver
return if @status.mentions.find_by(account_id: @options[:delivered_to_account_id])
delivered_to_account = Account.find(@options[:delivered_to_account_id])
@status.mentions.create(account: delivered_to_account, silent: true)
@status.update(visibility: :limited) if @status.direct_visibility?
return unless delivered_to_account.following?(@account)
FeedInsertWorker.perform_async(@status.id, delivered_to_account.id, :home)
end
def attach_tags(status)
@tags.each do |tag|
status.tags << tag
tag.use!(@account, status: status, at_time: status.created_at) if status.public_visibility?
end
@mentions.each do |mention|
mention.status = status
mention.save
end
end
def process_tags
return if @object['tag'].nil?
as_array(@object['tag']).each do |tag|
if equals_or_includes?(tag['type'], 'Hashtag')
process_hashtag tag
elsif equals_or_includes?(tag['type'], 'Mention')
process_mention tag
elsif equals_or_includes?(tag['type'], 'Emoji')
process_emoji tag
end
end
end
def process_hashtag(tag)
return if tag['name'].blank?
Tag.find_or_create_by_names(tag['name']) do |hashtag|
@tags << hashtag unless @tags.include?(hashtag) || !hashtag.valid?
end
rescue ActiveRecord::RecordInvalid
nil
end
def process_mention(tag)
return if tag['href'].blank?
account = account_from_uri(tag['href'])
account = ActivityPub::FetchRemoteAccountService.new.call(tag['href']) if account.nil?
return if account.nil?
@mentions << Mention.new(account: account, silent: false)
end
def process_emoji(tag)
return if skip_download?
return if tag['name'].blank? || tag['icon'].blank? || tag['icon']['url'].blank?
shortcode = tag['name'].delete(':')
image_url = tag['icon']['url']
uri = tag['id']
updated = tag['updated']
emoji = CustomEmoji.find_by(shortcode: shortcode, domain: @account.domain)
return unless emoji.nil? || image_url != emoji.image_remote_url || (updated && updated >= emoji.updated_at)
emoji ||= CustomEmoji.new(domain: @account.domain, shortcode: shortcode, uri: uri)
emoji.image_remote_url = image_url
emoji.save
rescue Seahorse::Client::NetworkingError
nil
end
def process_attachments
return [] if @object['attachment'].nil?
media_attachments = []
as_array(@object['attachment']).each do |attachment|
next if attachment['url'].blank? || media_attachments.size >= 4
begin
href = Addressable::URI.parse(attachment['url']).normalize.to_s
media_attachment = MediaAttachment.create(account: @account, remote_url: href, thumbnail_remote_url: icon_url_from_attachment(attachment), description: attachment['summary'].presence || attachment['name'].presence, focus: attachment['focalPoint'], blurhash: supported_blurhash?(attachment['blurhash']) ? attachment['blurhash'] : nil)
media_attachments << media_attachment
next if unsupported_media_type?(attachment['mediaType']) || skip_download?
media_attachment.download_file!
media_attachment.download_thumbnail!
media_attachment.save
rescue Mastodon::UnexpectedResponseError, HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError
RedownloadMediaWorker.perform_in(rand(30..600).seconds, media_attachment.id)
rescue Seahorse::Client::NetworkingError
nil
end
end
media_attachments
rescue Addressable::URI::InvalidURIError => e
Rails.logger.debug "Invalid URL in attachment: #{e}"
media_attachments
end
def icon_url_from_attachment(attachment)
url = attachment['icon'].is_a?(Hash) ? attachment['icon']['url'] : attachment['icon']
Addressable::URI.parse(url).normalize.to_s if url.present?
rescue Addressable::URI::InvalidURIError
nil
end
def process_poll
return unless @object['type'] == 'Question' && (@object['anyOf'].is_a?(Array) || @object['oneOf'].is_a?(Array))
expires_at = begin
if @object['closed'].is_a?(String)
@object['closed']
elsif !@object['closed'].nil? && !@object['closed'].is_a?(FalseClass)
Time.now.utc
else
@object['endTime']
end
end
if @object['anyOf'].is_a?(Array)
multiple = true
items = @object['anyOf']
else
multiple = false
items = @object['oneOf']
end
voters_count = @object['votersCount']
@account.polls.new(
multiple: multiple,
expires_at: expires_at,
options: items.map { |item| item['name'].presence || item['content'] }.compact,
cached_tallies: items.map { |item| item.dig('replies', 'totalItems') || 0 },
voters_count: voters_count
)
end
def poll_vote?
return false if replied_to_status.nil? || replied_to_status.preloadable_poll.nil? || !replied_to_status.local? || !replied_to_status.preloadable_poll.options.include?(@object['name'])
poll_vote! unless replied_to_status.preloadable_poll.expired?
true
end
def poll_vote!
poll = replied_to_status.preloadable_poll
already_voted = true
lock_or_fail("vote:#{replied_to_status.poll_id}:#{@account.id}") do
already_voted = poll.votes.where(account: @account).exists?
poll.votes.create!(account: @account, choice: poll.options.index(@object['name']), uri: object_uri)
end
increment_voters_count! unless already_voted
ActivityPub::DistributePollUpdateWorker.perform_in(3.minutes, replied_to_status.id) unless replied_to_status.preloadable_poll.hide_totals?
end
def resolve_thread(status)
return unless status.reply? && status.thread.nil? && Request.valid_url?(in_reply_to_uri)
ThreadResolveWorker.perform_async(status.id, in_reply_to_uri)
end
def fetch_replies(status)
collection = @object['replies']
return if collection.nil?
replies = ActivityPub::FetchRepliesService.new.call(status, collection, false)
return unless replies.nil?
uri = value_or_id(collection)
ActivityPub::FetchRepliesWorker.perform_async(status.id, uri) unless uri.nil?
end
def conversation_from_uri(uri)
return nil if uri.nil?
return Conversation.find_by(id: OStatus::TagManager.instance.unique_tag_to_local_id(uri, 'Conversation')) if OStatus::TagManager.instance.local_id?(uri)
begin
Conversation.find_or_create_by!(uri: uri)
rescue ActiveRecord::RecordInvalid, ActiveRecord::RecordNotUnique
retry
end
end
def visibility_from_audience
if audience_to.any? { |to| ActivityPub::TagManager.instance.public_collection?(to) }
:public
elsif audience_cc.any? { |cc| ActivityPub::TagManager.instance.public_collection?(cc) }
:unlisted
elsif audience_to.include?(@account.followers_url)
:private
else
:direct
end
end
def audience_includes?(account)
uri = ActivityPub::TagManager.instance.uri_for(account)
audience_to.include?(uri) || audience_cc.include?(uri)
end
def replied_to_status
return @replied_to_status if defined?(@replied_to_status)
if in_reply_to_uri.blank?
@replied_to_status = nil
else
@replied_to_status = status_from_uri(in_reply_to_uri)
@replied_to_status ||= status_from_uri(@object['inReplyToAtomUri']) if @object['inReplyToAtomUri'].present?
@replied_to_status
end
end
def in_reply_to_uri
value_or_id(@object['inReplyTo'])
end
def text_from_content
return Formatter.instance.linkify([[text_from_name, text_from_summary.presence].compact.join("\n\n"), object_url || object_uri].join(' ')) if converted_object_type?
if @object['content'].present?
@object['content']
elsif content_language_map?
@object['contentMap'].values.first
end
end
def text_from_summary
if @object['summary'].present?
@object['summary']
elsif summary_language_map?
@object['summaryMap'].values.first
end
end
def text_from_name
if @object['name'].present?
@object['name']
elsif name_language_map?
@object['nameMap'].values.first
end
end
def detected_language
if content_language_map?
@object['contentMap'].keys.first
elsif name_language_map?
@object['nameMap'].keys.first
elsif summary_language_map?
@object['summaryMap'].keys.first
elsif supported_object_type?
LanguageDetector.instance.detect(text_from_content, @account)
end
end
def object_url
return if @object['url'].blank?
url_candidate = url_to_href(@object['url'], 'text/html')
if invalid_origin?(url_candidate)
nil
else
url_candidate
end
end
def summary_language_map?
@object['summaryMap'].is_a?(Hash) && !@object['summaryMap'].empty?
end
def content_language_map?
@object['contentMap'].is_a?(Hash) && !@object['contentMap'].empty?
end
def name_language_map?
@object['nameMap'].is_a?(Hash) && !@object['nameMap'].empty?
end
def unsupported_media_type?(mime_type)
mime_type.present? && !MediaAttachment.supported_mime_types.include?(mime_type)
end
def supported_blurhash?(blurhash)
components = blurhash.blank? ? nil : Blurhash.components(blurhash)
components.present? && components.none? { |comp| comp > 5 }
end
def skip_download?
return @skip_download if defined?(@skip_download)
@skip_download ||= DomainBlock.reject_media?(@account.domain)
end
def reply_to_local?
!replied_to_status.nil? && replied_to_status.account.local?
end
def related_to_local_activity?
fetch? || followed_by_local_accounts? || requested_through_relay? ||
responds_to_followed_account? || addresses_local_accounts?
end
def responds_to_followed_account?
!replied_to_status.nil? && (replied_to_status.account.local? || replied_to_status.account.passive_relationships.exists?)
end
def addresses_local_accounts?
return true if @options[:delivered_to_account_id]
local_usernames = (audience_to + audience_cc).uniq.select { |uri| ActivityPub::TagManager.instance.local_uri?(uri) }.map { |uri| ActivityPub::TagManager.instance.uri_to_local_id(uri, :username) }
return false if local_usernames.empty?
Account.local.where(username: local_usernames).exists?
end
def tombstone_exists?
Tombstone.exists?(uri: object_uri)
end
def forward_for_reply
return unless @status.distributable? && @json['signature'].present? && reply_to_local?
ActivityPub::RawDistributionWorker.perform_async(Oj.dump(@json), replied_to_status.account_id, [@account.preferred_inbox_url])
end
def increment_voters_count!
poll = replied_to_status.preloadable_poll
unless poll.voters_count.nil?
poll.voters_count = poll.voters_count + 1
poll.save
end
rescue ActiveRecord::StaleObjectError
poll.reload
retry
end
end