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