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# frozen_string_literal: true
class ActivityPub::ProcessAccountService < BaseService
include JsonLdHelper
# Should be called with confirmed valid JSON
# and WebFinger-resolved username and domain
def call(username, domain, json)
return if json['inbox'].blank? || unsupported_uri_scheme?(json['id'])
@json = json
@uri = @json['id']
@username = username
@domain = domain
@collections = {}
RedisLock.acquire(lock_options) do |lock|
if lock.acquired?
@account = Account.find_by(uri: @uri)
@old_public_key = @account&.public_key
@old_protocol = @account&.protocol
create_account if @account.nil?
update_account
end
end
after_protocol_change! if protocol_changed?
after_key_change! if key_changed?
@account
rescue Oj::ParseError
nil
end
private
def create_account
@account = Account.new
@account.protocol = :activitypub
@account.username = @username
@account.domain = @domain
@account.uri = @uri
@account.suspended = true if auto_suspend?
@account.silenced = true if auto_silence?
@account.private_key = nil
end
def update_account
@account.last_webfingered_at = Time.now.utc
@account.protocol = :activitypub
set_immediate_attributes!
set_fetchable_attributes!
@account.save_with_optional_media!
end
def set_immediate_attributes!
@account.inbox_url = @json['inbox'] || ''
@account.outbox_url = @json['outbox'] || ''
@account.shared_inbox_url = (@json['endpoints'].is_a?(Hash) ? @json['endpoints']['sharedInbox'] : @json['sharedInbox']) || ''
@account.followers_url = @json['followers'] || ''
@account.url = url || @uri
@account.display_name = @json['name'] || ''
@account.note = @json['summary'] || ''
@account.locked = @json['manuallyApprovesFollowers'] || false
end
def set_fetchable_attributes!
@account.avatar_remote_url = image_url('icon') unless skip_download?
@account.header_remote_url = image_url('image') unless skip_download?
@account.public_key = public_key || ''
@account.statuses_count = outbox_total_items if outbox_total_items.present?
@account.following_count = following_total_items if following_total_items.present?
@account.followers_count = followers_total_items if followers_total_items.present?
@account.moved_to_account = @json['movedTo'].present? ? moved_account : nil
end
def after_protocol_change!
ActivityPub::PostUpgradeWorker.perform_async(@account.domain)
end
def after_key_change!
RefollowWorker.perform_async(@account.id)
end
def image_url(key)
value = first_of_value(@json[key])
return if value.nil?
return value['url'] if value.is_a?(Hash)
image = fetch_resource_without_id_validation(value)
image['url'] if image
end
def public_key
value = first_of_value(@json['publicKey'])
return if value.nil?
return value['publicKeyPem'] if value.is_a?(Hash)
key = fetch_resource_without_id_validation(value)
key['publicKeyPem'] if key
end
def url
return if @json['url'].blank?
url_candidate = url_to_href(@json['url'], 'text/html')
if unsupported_uri_scheme?(url_candidate) || mismatching_origin?(url_candidate)
nil
else
url_candidate
end
end
def mismatching_origin?(url)
needle = Addressable::URI.parse(url).host
haystack = Addressable::URI.parse(@uri).host
!haystack.casecmp(needle).zero?
end
def outbox_total_items
collection_total_items('outbox')
end
def following_total_items
collection_total_items('following')
end
def followers_total_items
collection_total_items('followers')
end
def collection_total_items(type)
return if @json[type].blank?
return @collections[type] if @collections.key?(type)
collection = fetch_resource_without_id_validation(@json[type])
@collections[type] = collection.is_a?(Hash) && collection['totalItems'].present? && collection['totalItems'].is_a?(Numeric) ? collection['totalItems'] : nil
rescue HTTP::Error, OpenSSL::SSL::SSLError
@collections[type] = nil
end
def moved_account
account = ActivityPub::TagManager.instance.uri_to_resource(@json['movedTo'], Account)
account ||= ActivityPub::FetchRemoteAccountService.new.call(@json['movedTo'], id: true)
account
end
def skip_download?
@account.suspended? || domain_block&.reject_media?
end
def auto_suspend?
domain_block&.suspend?
end
def auto_silence?
domain_block&.silence?
end
def domain_block
return @domain_block if defined?(@domain_block)
@domain_block = DomainBlock.find_by(domain: @domain)
end
def key_changed?
!@old_public_key.nil? && @old_public_key != @account.public_key
end
def protocol_changed?
!@old_protocol.nil? && @old_protocol != @account.protocol
end
def lock_options
{ redis: Redis.current, key: "process_account:#{@uri}" }
end
end
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