# frozen_string_literal: true class OStatus::AtomSerializer include RoutingHelper include ActionView::Helpers::SanitizeHelper class << self def render(element) document = Ox::Document.new(version: '1.0') document << element ('<?xml version="1.0"?>' + Ox.dump(element, effort: :tolerant)).force_encoding('UTF-8') end end def author(account) author = Ox::Element.new('author') uri = OStatus::TagManager.instance.uri_for(account) append_element(author, 'id', uri) append_element(author, 'activity:object-type', OStatus::TagManager::TYPES[:person]) append_element(author, 'uri', uri) append_element(author, 'name', account.username) append_element(author, 'email', account.local? ? account.local_username_and_domain : account.acct) append_element(author, 'summary', Formatter.instance.simplified_format(account).to_str, type: :html) if account.note? append_element(author, 'link', nil, rel: :alternate, type: 'text/html', href: ::TagManager.instance.url_for(account)) append_element(author, 'link', nil, rel: :avatar, type: account.avatar_content_type, 'media:width': 120, 'media:height': 120, href: full_asset_url(account.avatar.url(:original))) if account.avatar? append_element(author, 'link', nil, rel: :header, type: account.header_content_type, 'media:width': 700, 'media:height': 335, href: full_asset_url(account.header.url(:original))) if account.header? append_element(author, 'poco:preferredUsername', account.username) append_element(author, 'poco:displayName', account.display_name) if account.display_name? append_element(author, 'poco:note', account.local? ? account.note : strip_tags(account.note)) if account.note? append_element(author, 'mastodon:scope', account.locked? ? :private : :public) author end def feed(account, stream_entries) feed = Ox::Element.new('feed') add_namespaces(feed) append_element(feed, 'id', account_url(account, format: 'atom')) append_element(feed, 'title', account.display_name.presence || account.username) append_element(feed, 'subtitle', account.note) append_element(feed, 'updated', account.updated_at.iso8601) append_element(feed, 'logo', full_asset_url(account.avatar.url(:original))) feed << author(account) append_element(feed, 'link', nil, rel: :alternate, type: 'text/html', href: ::TagManager.instance.url_for(account)) append_element(feed, 'link', nil, rel: :self, type: 'application/atom+xml', href: account_url(account, format: 'atom')) append_element(feed, 'link', nil, rel: :next, type: 'application/atom+xml', href: account_url(account, format: 'atom', max_id: stream_entries.last.id)) if stream_entries.size == 20 append_element(feed, 'link', nil, rel: :hub, href: api_push_url) append_element(feed, 'link', nil, rel: :salmon, href: api_salmon_url(account.id)) stream_entries.each do |stream_entry| feed << entry(stream_entry) end feed end def entry(stream_entry, root = false) entry = Ox::Element.new('entry') add_namespaces(entry) if root append_element(entry, 'id', OStatus::TagManager.instance.uri_for(stream_entry.status)) append_element(entry, 'published', stream_entry.created_at.iso8601) append_element(entry, 'updated', stream_entry.updated_at.iso8601) append_element(entry, 'title', stream_entry&.status&.title || "#{stream_entry.account.acct} deleted status") entry << author(stream_entry.account) if root append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[stream_entry.object_type]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[stream_entry.verb]) entry << object(stream_entry.target) if stream_entry.targeted? if stream_entry.status.nil? append_element(entry, 'content', 'Deleted status') elsif stream_entry.status.destroyed? append_element(entry, 'content', 'Deleted status') append_element(entry, 'link', nil, rel: :alternate, type: 'application/activity+json', href: ActivityPub::TagManager.instance.uri_for(stream_entry.status)) if stream_entry.account.local? else serialize_status_attributes(entry, stream_entry.status) end append_element(entry, 'link', nil, rel: :alternate, type: 'text/html', href: ::TagManager.instance.url_for(stream_entry.status)) append_element(entry, 'link', nil, rel: :self, type: 'application/atom+xml', href: account_stream_entry_url(stream_entry.account, stream_entry, format: 'atom')) append_element(entry, 'thr:in-reply-to', nil, ref: OStatus::TagManager.instance.uri_for(stream_entry.thread), href: ::TagManager.instance.url_for(stream_entry.thread)) if stream_entry.threaded? append_element(entry, 'ostatus:conversation', nil, ref: conversation_uri(stream_entry.status.conversation)) unless stream_entry&.status&.conversation_id.nil? entry end def object(status) object = Ox::Element.new('activity:object') append_element(object, 'id', OStatus::TagManager.instance.uri_for(status)) append_element(object, 'published', status.created_at.iso8601) append_element(object, 'updated', status.updated_at.iso8601) append_element(object, 'title', status.title) object << author(status.account) append_element(object, 'activity:object-type', OStatus::TagManager::TYPES[status.object_type]) append_element(object, 'activity:verb', OStatus::TagManager::VERBS[status.verb]) serialize_status_attributes(object, status) append_element(object, 'link', nil, rel: :alternate, type: 'text/html', href: ::TagManager.instance.url_for(status)) append_element(object, 'thr:in-reply-to', nil, ref: OStatus::TagManager.instance.uri_for(status.thread), href: ::TagManager.instance.url_for(status.thread)) unless status.thread.nil? append_element(object, 'ostatus:conversation', nil, ref: conversation_uri(status.conversation)) unless status.conversation_id.nil? object end def follow_salmon(follow) entry = Ox::Element.new('entry') add_namespaces(entry) description = "#{follow.account.acct} started following #{follow.target_account.acct}" append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(follow.created_at, follow.id, 'Follow')) append_element(entry, 'title', description) append_element(entry, 'content', description, type: :html) entry << author(follow.account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:follow]) object = author(follow.target_account) object.value = 'activity:object' entry << object entry end def follow_request_salmon(follow_request) entry = Ox::Element.new('entry') add_namespaces(entry) append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(follow_request.created_at, follow_request.id, 'FollowRequest')) append_element(entry, 'title', "#{follow_request.account.acct} requested to follow #{follow_request.target_account.acct}") entry << author(follow_request.account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:request_friend]) object = author(follow_request.target_account) object.value = 'activity:object' entry << object entry end def authorize_follow_request_salmon(follow_request) entry = Ox::Element.new('entry') add_namespaces(entry) append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(Time.now.utc, follow_request.id, 'FollowRequest')) append_element(entry, 'title', "#{follow_request.target_account.acct} authorizes follow request by #{follow_request.account.acct}") entry << author(follow_request.target_account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:authorize]) object = Ox::Element.new('activity:object') object << author(follow_request.account) append_element(object, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(object, 'activity:verb', OStatus::TagManager::VERBS[:request_friend]) inner_object = author(follow_request.target_account) inner_object.value = 'activity:object' object << inner_object entry << object entry end def reject_follow_request_salmon(follow_request) entry = Ox::Element.new('entry') add_namespaces(entry) append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(Time.now.utc, follow_request.id, 'FollowRequest')) append_element(entry, 'title', "#{follow_request.target_account.acct} rejects follow request by #{follow_request.account.acct}") entry << author(follow_request.target_account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:reject]) object = Ox::Element.new('activity:object') object << author(follow_request.account) append_element(object, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(object, 'activity:verb', OStatus::TagManager::VERBS[:request_friend]) inner_object = author(follow_request.target_account) inner_object.value = 'activity:object' object << inner_object entry << object entry end def unfollow_salmon(follow) entry = Ox::Element.new('entry') add_namespaces(entry) description = "#{follow.account.acct} is no longer following #{follow.target_account.acct}" append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(Time.now.utc, follow.id, 'Follow')) append_element(entry, 'title', description) append_element(entry, 'content', description, type: :html) entry << author(follow.account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:unfollow]) object = author(follow.target_account) object.value = 'activity:object' entry << object entry end def block_salmon(block) entry = Ox::Element.new('entry') add_namespaces(entry) description = "#{block.account.acct} no longer wishes to interact with #{block.target_account.acct}" append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(Time.now.utc, block.id, 'Block')) append_element(entry, 'title', description) entry << author(block.account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:block]) object = author(block.target_account) object.value = 'activity:object' entry << object entry end def unblock_salmon(block) entry = Ox::Element.new('entry') add_namespaces(entry) description = "#{block.account.acct} no longer blocks #{block.target_account.acct}" append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(Time.now.utc, block.id, 'Block')) append_element(entry, 'title', description) entry << author(block.account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:unblock]) object = author(block.target_account) object.value = 'activity:object' entry << object entry end def favourite_salmon(favourite) entry = Ox::Element.new('entry') add_namespaces(entry) description = "#{favourite.account.acct} favourited a status by #{favourite.status.account.acct}" append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(favourite.created_at, favourite.id, 'Favourite')) append_element(entry, 'title', description) append_element(entry, 'content', description, type: :html) entry << author(favourite.account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:favorite]) entry << object(favourite.status) append_element(entry, 'thr:in-reply-to', nil, ref: OStatus::TagManager.instance.uri_for(favourite.status), href: ::TagManager.instance.url_for(favourite.status)) entry end def unfavourite_salmon(favourite) entry = Ox::Element.new('entry') add_namespaces(entry) description = "#{favourite.account.acct} no longer favourites a status by #{favourite.status.account.acct}" append_element(entry, 'id', OStatus::TagManager.instance.unique_tag(Time.now.utc, favourite.id, 'Favourite')) append_element(entry, 'title', description) append_element(entry, 'content', description, type: :html) entry << author(favourite.account) append_element(entry, 'activity:object-type', OStatus::TagManager::TYPES[:activity]) append_element(entry, 'activity:verb', OStatus::TagManager::VERBS[:unfavorite]) entry << object(favourite.status) append_element(entry, 'thr:in-reply-to', nil, ref: OStatus::TagManager.instance.uri_for(favourite.status), href: ::TagManager.instance.url_for(favourite.status)) entry end private def append_element(parent, name, content = nil, **attributes) element = Ox::Element.new(name) attributes.each { |k, v| element[k] = sanitize_str(v) } element << sanitize_str(content) unless content.nil? parent << element end def sanitize_str(raw_str) raw_str.to_s end def conversation_uri(conversation) return conversation.uri if conversation.uri? OStatus::TagManager.instance.unique_tag(conversation.created_at, conversation.id, 'Conversation') end def add_namespaces(parent) parent['xmlns'] = OStatus::TagManager::XMLNS parent['xmlns:thr'] = OStatus::TagManager::THR_XMLNS parent['xmlns:activity'] = OStatus::TagManager::AS_XMLNS parent['xmlns:poco'] = OStatus::TagManager::POCO_XMLNS parent['xmlns:media'] = OStatus::TagManager::MEDIA_XMLNS parent['xmlns:ostatus'] = OStatus::TagManager::OS_XMLNS parent['xmlns:mastodon'] = OStatus::TagManager::MTDN_XMLNS end def serialize_status_attributes(entry, status) append_element(entry, 'link', nil, rel: :alternate, type: 'application/activity+json', href: ActivityPub::TagManager.instance.uri_for(status)) if status.account.local? append_element(entry, 'summary', status.spoiler_text, 'xml:lang': status.language) if status.spoiler_text? append_element(entry, 'content', Formatter.instance.format(status).to_str, type: 'html', 'xml:lang': status.language) status.mentions.each do |mentioned| append_element(entry, 'link', nil, rel: :mentioned, 'ostatus:object-type': OStatus::TagManager::TYPES[:person], href: OStatus::TagManager.instance.uri_for(mentioned.account)) end append_element(entry, 'link', nil, rel: :mentioned, 'ostatus:object-type': OStatus::TagManager::TYPES[:collection], href: OStatus::TagManager::COLLECTIONS[:public]) if status.public_visibility? status.tags.each do |tag| append_element(entry, 'category', nil, term: tag.name) end append_element(entry, 'category', nil, term: 'nsfw') if status.sensitive? status.media_attachments.each do |media| append_element(entry, 'link', nil, rel: :enclosure, type: media.file_content_type, length: media.file_file_size, href: full_asset_url(media.file.url(:original, false))) end append_element(entry, 'mastodon:scope', status.visibility) status.emojis.each do |emoji| append_element(entry, 'link', nil, rel: :emoji, href: full_asset_url(emoji.image.url), name: emoji.shortcode) end end end