Mark incoming activties as non-local.

[akkoma] / lib / pleroma / web / ostatus / ostatus.ex

diff --git a/lib/pleroma/web/ostatus/ostatus.ex b/lib/pleroma/web/ostatus/ostatus.ex
index 9fcbe6cb09f1913b6ab5e49e3af7c7e649c6479e..db32d2c354b63e668e97ae3e8eaaa22aeec92bf1 100644 (file)
--- a/lib/pleroma/web/ostatus/ostatus.ex
+++ b/lib/pleroma/web/ostatus/ostatus.ex
@@ -1,14 +1,151 @@
 defmodule Pleroma.Web.OStatus do
-  alias Pleroma.Web
+  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() do
-    "#{Web.base_url}/push/hub"
+  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)
+
+    uri = string_from_xpath("/entry/author/uri[1]", entry) || string_from_xpath("/feed/author/uri[1]", doc)
+    {:ok, actor} = find_or_make_user(uri)
+
+    context = (string_from_xpath("/entry/ostatus:conversation[1]", entry) || "") |> String.trim
+    context = if String.length(context) > 0 do
+      context
+    else
+      ActivityPub.generate_context_id
+    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
+    }
+
+    inReplyTo = string_from_xpath("/entry/thr:in-reply-to[1]/@ref", entry)
+
+    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_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("/feed/author[1]/link[@rel=\"avatar\"]/@href", author_doc)
+    type = string_from_xpath("/feed/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 user_path(user) do
+  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