defmodule Pleroma.Web.OStatus do import Ecto.Query import Pleroma.Web.XML require Logger alias Pleroma.{Repo, User, Web, Object} alias Pleroma.Web.ActivityPub.ActivityPub alias Pleroma.Web.{WebFinger, Websub} def feed_path(user) do "#{user.ap_id}/feed.atom" end def pubsub_path(user) do "#{Web.base_url}/push/hub/#{user.nickname}" end def salmon_path(user) do "#{user.ap_id}/salmon" end def handle_incoming(xml_string) do doc = parse_document(xml_string) entries = :xmerl_xpath.string('//entry', doc) activities = Enum.map(entries, fn (entry) -> {:xmlObj, :string, object_type } = :xmerl_xpath.string('string(/entry/activity:object-type[1])', entry) case object_type do 'http://activitystrea.ms/schema/1.0/note' -> with {:ok, activity} <- handle_note(entry, doc), do: activity 'http://activitystrea.ms/schema/1.0/comment' -> with {:ok, activity} <- handle_note(entry, doc), do: activity _ -> Logger.error("Couldn't parse incoming document") nil end end) {:ok, activities} end def handle_note(entry, doc \\ nil) do content_html = string_from_xpath("/entry/content[1]", entry) [author] = :xmerl_xpath.string('//author[1]', doc) {:ok, actor} = find_make_or_update_user(author) inReplyTo = string_from_xpath("/entry/thr:in-reply-to[1]/@ref", entry) context = (string_from_xpath("/entry/ostatus:conversation[1]", entry) || "") |> String.trim context = with %{data: %{"context" => context}} <- Object.get_cached_by_ap_id(inReplyTo) do context else _e -> if String.length(context) > 0 do context else ActivityPub.generate_context_id end end to = [ "https://www.w3.org/ns/activitystreams#Public" ] mentions = :xmerl_xpath.string('/entry/link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', entry) |> Enum.map(fn(person) -> string_from_xpath("@href", person) end) to = to ++ mentions date = string_from_xpath("/entry/published", entry) id = string_from_xpath("/entry/id", entry) object = %{ "id" => id, "type" => "Note", "to" => to, "content" => content_html, "published" => date, "context" => context, "actor" => actor.ap_id } object = if inReplyTo do Map.put(object, "inReplyTo", inReplyTo) else object end # TODO: Bail out sooner and use transaction. if Object.get_by_ap_id(id) do {:error, "duplicate activity"} else ActivityPub.create(to, actor, context, object, %{}, date, false) end end def find_make_or_update_user(doc) do uri = string_from_xpath("//author/uri[1]", doc) with {:ok, user} <- find_or_make_user(uri) do avatar = make_avatar_object(doc) if user.avatar != avatar do change = Ecto.Changeset.change(user, %{avatar: avatar}) Repo.update(change) else {:ok, user} end end end def find_or_make_user(uri) do query = from user in User, where: user.local == false and fragment("? @> ?", user.info, ^%{uri: uri}) user = Repo.one(query) if is_nil(user) do make_user(uri) else {:ok, user} end end def make_user(uri) do with {:ok, info} <- gather_user_info(uri) do data = %{ local: false, name: info.name, nickname: info.nickname <> "@" <> info.host, ap_id: info.uri, info: info, avatar: info.avatar } # TODO: Make remote user changeset # SHould enforce fqn nickname Repo.insert(Ecto.Changeset.change(%User{}, data)) end end # TODO: Just takes the first one for now. def make_avatar_object(author_doc) do href = string_from_xpath("//author[1]/link[@rel=\"avatar\"]/@href", author_doc) type = string_from_xpath("//author[1]/link[@rel=\"avatar\"]/@type", author_doc) if href do %{ "type" => "Image", "url" => [%{ "type" => "Link", "mediaType" => type, "href" => href }] } else nil end end def gather_user_info(username) do with {:ok, webfinger_data} <- WebFinger.finger(username), {:ok, feed_data} <- Websub.gather_feed_data(webfinger_data.topic) do {:ok, Map.merge(webfinger_data, feed_data) |> Map.put(:fqn, username)} else e -> Logger.debug("Couldn't gather info for #{username}") {:error, e} end end end