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

   1 defmodule Pleroma.Web.OStatus do
   2   import Ecto.Query
   3   require Logger
   4
   5   alias Pleroma.{Repo, User, Web}
   6   alias Pleroma.Web.ActivityPub.ActivityPub
   7
   8   def feed_path(user) do
   9     "#{user.ap_id}/feed.atom"
  10   end
  11
  12   def pubsub_path(user) do
  13     "#{Web.base_url}/push/hub/#{user.nickname}"
  14   end
  15
  16   def salmon_path(user) do
  17     "#{user.ap_id}/salmon"
  18   end
  19
  20   def handle_incoming(xml_string) do
  21     {doc, _rest} = :xmerl_scan.string(to_charlist(xml_string))
  22
  23     {:xmlObj, :string, object_type } = :xmerl_xpath.string('string(/entry/activity:object-type[1])', doc)
  24
  25     case object_type do
  26       'http://activitystrea.ms/schema/1.0/note' ->
  27         handle_note(doc)
  28       _ ->
  29         Logger.error("Couldn't parse incoming document")
  30     end
  31   end
  32
  33   # TODO
  34   # Parse mention
  35   # wire up replies
  36   # Set correct context
  37   # Set correct statusnet ids.
  38   def handle_note(doc) do
  39     content_html = string_from_xpath("/entry/content[1]", doc)
  40
  41     [author] = :xmerl_xpath.string('/entry/author[1]', doc)
  42     {:ok, actor} = find_or_make_user(author)
  43
  44     context = string_from_xpath("/entry/ostatus:conversation[1]", doc) |> String.trim
  45     context = if String.length(context) > 0 do
  46       context
  47     else
  48       ActivityPub.generate_context_id
  49     end
  50
  51     to = [
  52       "https://www.w3.org/ns/activitystreams#Public"
  53     ]
  54
  55     date = string_from_xpath("/entry/published", doc)
  56
  57     object = %{
  58       "type" => "Note",
  59       "to" => to,
  60       "content" => content_html,
  61       "published" => date,
  62       "context" => context,
  63       "actor" => actor.ap_id
  64     }
  65
  66     ActivityPub.create(to, actor, context, object, %{}, date)
  67   end
  68
  69   def find_or_make(author, doc) do
  70     query = from user in User,
  71       where: user.local == false and fragment("? @> ?", user.info, ^%{ostatus_uri: author})
  72
  73     user = Repo.one(query)
  74
  75     if is_nil(user) do
  76       make_user(doc)
  77     else
  78       {:ok, user}
  79     end
  80   end
  81
  82   def find_or_make_user(author_doc) do
  83     {:xmlObj, :string, uri } = :xmerl_xpath.string('string(/author[1]/uri)', author_doc)
  84
  85     query = from user in User,
  86       where: user.local == false and fragment("? @> ?", user.info, ^%{ostatus_uri: to_string(uri)})
  87
  88     user = Repo.one(query)
  89
  90     if is_nil(user) do
  91       make_user(author_doc)
  92     else
  93       {:ok, user}
  94     end
  95   end
  96
  97   defp string_from_xpath(xpath, doc) do
  98     {:xmlObj, :string, res} = :xmerl_xpath.string('string(#{xpath})', doc)
  99
 100     res = res
 101     |> to_string
 102     |> String.trim
 103
 104     if res == "", do: nil, else: res
 105   end
 106
 107   def make_user(author_doc) do
 108     author = string_from_xpath("/author[1]/uri", author_doc)
 109     name = string_from_xpath("/author[1]/name", author_doc)
 110     preferredUsername = string_from_xpath("/author[1]/poco:preferredUsername", author_doc)
 111     displayName = string_from_xpath("/author[1]/poco:displayName", author_doc)
 112     avatar = make_avatar_object(author_doc)
 113
 114     data = %{
 115       local: false,
 116       name: preferredUsername || name,
 117       nickname: displayName || name,
 118       ap_id: author,
 119       info: %{
 120         "ostatus_uri" => author,
 121         "host" => URI.parse(author).host,
 122         "system" => "ostatus"
 123       },
 124       avatar: avatar
 125     }
 126
 127     Repo.insert(Ecto.Changeset.change(%User{}, data))
 128   end
 129
 130   # TODO: Just takes the first one for now.
 131   defp make_avatar_object(author_doc) do
 132     href = string_from_xpath("/author[1]/link[@rel=\"avatar\"]/@href", author_doc)
 133     type = string_from_xpath("/author[1]/link[@rel=\"avatar\"]/@type", author_doc)
 134
 135     if href do
 136       %{
 137         "type" => "Image",
 138         "url" =>
 139           [%{
 140               "type" => "Link",
 141               "mediaType" => type,
 142               "href" => href
 143            }]
 144       }
 145     else
 146       nil
 147     end
 148   end
 149 end