git.squeep.com Git - akkoma/blob - lib/pleroma/web/ostatus/ostatus.ex

   1 defmodule Pleroma.Web.OStatus do
   2   import Ecto.Query
   3   import Pleroma.Web.XML
   4   require Logger
   5
   6   alias Pleroma.{Repo, User, Web}
   7   alias Pleroma.Web.ActivityPub.ActivityPub
   8
   9   def feed_path(user) do
  10     "#{user.ap_id}/feed.atom"
  11   end
  12
  13   def pubsub_path(user) do
  14     "#{Web.base_url}/push/hub/#{user.nickname}"
  15   end
  16
  17   def salmon_path(user) do
  18     "#{user.ap_id}/salmon"
  19   end
  20
  21   def handle_incoming(xml_string) do
  22     doc = parse_document(xml_string)
  23
  24     {:xmlObj, :string, object_type } = :xmerl_xpath.string('string(/entry/activity:object-type[1])', doc)
  25
  26     case object_type do
  27       'http://activitystrea.ms/schema/1.0/note' ->
  28         handle_note(doc)
  29       _ ->
  30         Logger.error("Couldn't parse incoming document")
  31     end
  32   end
  33
  34   # TODO
  35   # wire up replies
  36   def handle_note(doc) do
  37     content_html = string_from_xpath("/entry/content[1]", doc)
  38
  39     [author] = :xmerl_xpath.string('/entry/author[1]', doc)
  40     {:ok, actor} = find_or_make_user(author)
  41
  42     context = string_from_xpath("/entry/ostatus:conversation[1]", doc) |> String.trim
  43     context = if String.length(context) > 0 do
  44       context
  45     else
  46       ActivityPub.generate_context_id
  47     end
  48
  49     to = [
  50       "https://www.w3.org/ns/activitystreams#Public"
  51     ]
  52
  53     mentions = :xmerl_xpath.string('/entry/link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', doc)
  54     |> Enum.map(fn(person) -> string_from_xpath("@href", person) end)
  55
  56     to = to ++ mentions
  57
  58     date = string_from_xpath("/entry/published", doc)
  59
  60     object = %{
  61       "type" => "Note",
  62       "to" => to,
  63       "content" => content_html,
  64       "published" => date,
  65       "context" => context,
  66       "actor" => actor.ap_id
  67     }
  68
  69     inReplyTo = string_from_xpath("/entry/thr:in-reply-to[1]/@href", doc)
  70
  71     object = if inReplyTo do
  72       Map.put(object, "inReplyTo", inReplyTo)
  73     else
  74       object
  75     end
  76
  77     ActivityPub.create(to, actor, context, object, %{}, date)
  78   end
  79
  80   def find_or_make_user(author_doc) do
  81     {:xmlObj, :string, uri } = :xmerl_xpath.string('string(/author[1]/uri)', author_doc)
  82
  83     query = from user in User,
  84       where: user.local == false and fragment("? @> ?", user.info, ^%{ostatus_uri: to_string(uri)})
  85
  86     user = Repo.one(query)
  87
  88     if is_nil(user) do
  89       make_user(author_doc)
  90     else
  91       {:ok, user}
  92     end
  93   end
  94
  95   def make_user(author_doc) do
  96     author = string_from_xpath("/author[1]/uri", author_doc)
  97     name = string_from_xpath("/author[1]/name", author_doc)
  98     preferredUsername = string_from_xpath("/author[1]/poco:preferredUsername", author_doc)
  99     displayName = string_from_xpath("/author[1]/poco:displayName", author_doc)
 100     avatar = make_avatar_object(author_doc)
 101
 102     data = %{
 103       local: false,
 104       name: preferredUsername || name,
 105       nickname: displayName || name,
 106       ap_id: author,
 107       info: %{
 108         "ostatus_uri" => author,
 109         "host" => URI.parse(author).host,
 110         "system" => "ostatus"
 111       },
 112       avatar: avatar
 113     }
 114
 115     Repo.insert(Ecto.Changeset.change(%User{}, data))
 116   end
 117
 118   # TODO: Just takes the first one for now.
 119   defp make_avatar_object(author_doc) do
 120     href = string_from_xpath("/author[1]/link[@rel=\"avatar\"]/@href", author_doc)
 121     type = string_from_xpath("/author[1]/link[@rel=\"avatar\"]/@type", author_doc)
 122
 123     if href do
 124       %{
 125         "type" => "Image",
 126         "url" =>
 127           [%{
 128               "type" => "Link",
 129               "mediaType" => type,
 130               "href" => href
 131            }]
 132       }
 133     else
 134       nil
 135     end
 136   end
 137 end