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   alias Pleroma.Web.{WebFinger, Websub}
   9
  10   def feed_path(user) do
  11     "#{user.ap_id}/feed.atom"
  12   end
  13
  14   def pubsub_path(user) do
  15     "#{Web.base_url}/push/hub/#{user.nickname}"
  16   end
  17
  18   def salmon_path(user) do
  19     "#{user.ap_id}/salmon"
  20   end
  21
  22   def handle_incoming(xml_string) do
  23     doc = parse_document(xml_string)
  24     entries = :xmerl_xpath.string('//entry', doc)
  25
  26     activities = Enum.map(entries, fn (entry) ->
  27       {:xmlObj, :string, object_type } = :xmerl_xpath.string('string(/entry/activity:object-type[1])', entry)
  28
  29       case object_type do
  30         'http://activitystrea.ms/schema/1.0/note' ->
  31           {:ok, activity} = handle_note(entry, doc)
  32           activity
  33         'http://activitystrea.ms/schema/1.0/comment' ->
  34           {:ok, activity} = handle_note(entry, doc)
  35           activity
  36         _ ->
  37           Logger.error("Couldn't parse incoming document")
  38           nil
  39       end
  40     end)
  41     {:ok, activities}
  42   end
  43
  44   # TODO
  45   # wire up replies
  46   def handle_note(entry, doc \\ nil) do
  47     content_html = string_from_xpath("/entry/content[1]", entry)
  48
  49     uri = string_from_xpath("/entry/author/uri[1]", entry) || string_from_xpath("/feed/author/uri[1]", doc)
  50     {:ok, actor} = find_or_make_user(uri)
  51
  52     context = string_from_xpath("/entry/ostatus:conversation[1]", entry) |> String.trim
  53     context = if String.length(context) > 0 do
  54       context
  55     else
  56       ActivityPub.generate_context_id
  57     end
  58
  59     to = [
  60       "https://www.w3.org/ns/activitystreams#Public"
  61     ]
  62
  63     mentions = :xmerl_xpath.string('/entry/link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', entry)
  64     |> Enum.map(fn(person) -> string_from_xpath("@href", person) end)
  65
  66     to = to ++ mentions
  67
  68     date = string_from_xpath("/entry/published", entry)
  69     id = string_from_xpath("/entry/id", entry)
  70
  71     object = %{
  72       "id" => id,
  73       "type" => "Note",
  74       "to" => to,
  75       "content" => content_html,
  76       "published" => date,
  77       "context" => context,
  78       "actor" => actor.ap_id
  79     }
  80
  81     inReplyTo = string_from_xpath("/entry/thr:in-reply-to[1]/@ref", entry)
  82
  83     object = if inReplyTo do
  84       Map.put(object, "inReplyTo", inReplyTo)
  85     else
  86       object
  87     end
  88
  89     ActivityPub.create(to, actor, context, object, %{}, date)
  90   end
  91
  92   def find_or_make_user(uri) do
  93     query = from user in User,
  94       where: user.local == false and fragment("? @> ?", user.info, ^%{uri: uri})
  95
  96     user = Repo.one(query)
  97
  98     if is_nil(user) do
  99       make_user(uri)
 100     else
 101       {:ok, user}
 102     end
 103   end
 104
 105   def make_user(uri) do
 106     with {:ok, info} <- gather_user_info(uri) do
 107       data = %{
 108         local: false,
 109         name: info.name,
 110         nickname: info.nickname <> "@" <> info.host,
 111         ap_id: info.uri,
 112         info: info
 113       }
 114       # TODO: Make remote user changeset
 115       # SHould enforce fqn nickname
 116       Repo.insert(Ecto.Changeset.change(%User{}, data))
 117     end
 118   end
 119
 120   # TODO: Just takes the first one for now.
 121   defp make_avatar_object(author_doc) do
 122     href = string_from_xpath("/author[1]/link[@rel=\"avatar\"]/@href", author_doc)
 123     type = string_from_xpath("/author[1]/link[@rel=\"avatar\"]/@type", author_doc)
 124
 125     if href do
 126       %{
 127         "type" => "Image",
 128         "url" =>
 129           [%{
 130               "type" => "Link",
 131               "mediaType" => type,
 132               "href" => href
 133            }]
 134       }
 135     else
 136       nil
 137     end
 138   end
 139
 140   def gather_user_info(username) do
 141     with {:ok, webfinger_data} <- WebFinger.finger(username),
 142          {:ok, feed_data} <- Websub.gather_feed_data(webfinger_data.topic) do
 143       {:ok, Map.merge(webfinger_data, feed_data) |> Map.put(:fqn, username)}
 144     else e ->
 145       Logger.debug("Couldn't gather info for #{username}")
 146       {:error, e}
 147     end
 148   end
 149 end