Do some transmogrifying for the output.
[akkoma] / lib / pleroma / web / activity_pub / activity_pub.ex
index e7d4c48bd1443c90742728ff7b7ce63e07f70daa..8e15fde4a810cf1373b92e255ceb271c1ee3103e 100644 (file)
@@ -1,16 +1,23 @@
 defmodule Pleroma.Web.ActivityPub.ActivityPub do
-  alias Pleroma.{Activity, Repo, Object, Upload, User, Web, Notification}
-  alias Ecto.{Changeset, UUID}
+  alias Pleroma.{Activity, Repo, Object, Upload, User, Notification}
+  alias Pleroma.Web.ActivityPub.Transmogrifier
   import Ecto.Query
   import Pleroma.Web.ActivityPub.Utils
   require Logger
 
+  @httpoison Application.get_env(:pleroma, :httpoison)
+
+  def get_recipients(data) do
+    (data["to"] || []) ++ (data["cc"] || [])
+  end
+
   def insert(map, local \\ true) when is_map(map) do
     with nil <- Activity.get_by_ap_id(map["id"]),
          map <- lazy_put_activity_defaults(map),
          :ok <- insert_full_object(map) do
-      {:ok, activity} = Repo.insert(%Activity{data: map, local: local})
+      {:ok, activity} = Repo.insert(%Activity{data: map, local: local, actor: map["actor"], recipients: get_recipients(map)})
       Notification.create_notifications(activity)
+      stream_out(activity)
       {:ok, activity}
     else
       %Activity{} = activity -> {:ok, activity}
@@ -18,7 +25,23 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  def create(to, actor, context, object, additional \\ %{}, published \\ nil, local \\ true) do
+  def stream_out(activity) do
+    if activity.data["type"] in ["Create", "Announce"] do
+      Pleroma.Web.Streamer.stream("user", activity)
+      if Enum.member?(activity.data["to"], "https://www.w3.org/ns/activitystreams#Public") do
+        Pleroma.Web.Streamer.stream("public", activity)
+        if activity.local do
+          Pleroma.Web.Streamer.stream("public:local", activity)
+        end
+      end
+    end
+  end
+
+  def create(%{to: to, actor: actor, context: context, object: object} = params) do
+    additional = params[:additional] || %{}
+    local = !(params[:local] == false) # only accept false as false value
+    published = params[:published]
+
     with create_data <- make_create_data(%{to: to, actor: actor, published: published, context: context, object: object}, additional),
          {:ok, activity} <- insert(create_data, local),
          :ok <- maybe_federate(activity) do
@@ -27,7 +50,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
-  def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do
+  def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do
     with nil <- get_existing_like(ap_id, object),
          like_data <- make_like_data(user, object, activity_id),
          {:ok, activity} <- insert(like_data, local),
@@ -49,7 +72,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do
+  def announce(%User{ap_id: _} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do
     with announce_data <- make_announce_data(user, object, activity_id),
          {:ok, activity} <- insert(announce_data, local),
          {:ok, object} <- add_announce_to_object(activity, object),
@@ -117,12 +140,10 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
   defp restrict_tag(query, _), do: query
 
+  defp restrict_recipients(query, []), do: query
   defp restrict_recipients(query, recipients) do
-    Enum.reduce(recipients, query, fn (recipient, q) ->
-      map = %{ to: [recipient] }
-      from activity in q,
-      or_where: fragment(~s(? @> ?), activity.data, ^map)
-    end)
+    from activity in query,
+     where: fragment("? && ?", ^recipients, activity.recipients)
   end
 
   defp restrict_local(query, %{"local_only" => true}) do
@@ -137,7 +158,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp restrict_actor(query, %{"actor_id" => actor_id}) do
     from activity in query,
-      where: fragment("?->>'actor' = ?", activity.data, ^actor_id)
+      where: activity.actor == ^actor_id
   end
   defp restrict_actor(query, _), do: query
 
@@ -156,6 +177,12 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
   defp restrict_favorited_by(query, _), do: query
 
+  defp restrict_media(query, %{"only_media" => val}) when val == "true" or val == "1" do
+    from activity in query,
+      where: fragment("not (? #> '{\"object\",\"attachment\"}' = ?)", activity.data, ^[])
+  end
+  defp restrict_media(query, _), do: query
+
   # Only search through last 100_000 activities by default
   defp restrict_recent(query, %{"whole_db" => true}), do: query
   defp restrict_recent(query, _) do
@@ -168,14 +195,14 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
     blocks = info["blocks"] || []
     from activity in query,
-      where: fragment("not (?->>'actor' = ANY(?))", activity.data, ^blocks)
+      where: fragment("not (? = ANY(?))", activity.actor, ^blocks)
   end
   defp restrict_blocked(query, _), do: query
 
   def fetch_activities(recipients, opts \\ %{}) do
     base_query = from activity in Activity,
       limit: 20,
-      order_by: [desc: :id]
+      order_by: [fragment("? desc nulls last", activity.id)]
 
     base_query
     |> restrict_recipients(recipients)
@@ -188,6 +215,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> restrict_favorited_by(opts)
     |> restrict_recent(opts)
     |> restrict_blocked(opts)
+    |> restrict_media(opts)
     |> Repo.all
     |> Enum.reverse
   end
@@ -196,4 +224,36 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     data = Upload.store(file)
     Repo.insert(%Object{data: data})
   end
+
+  def make_user_from_ap_id(ap_id) do
+    with {:ok, %{status_code: 200, body: body}} <- @httpoison.get(ap_id, ["Accept": "application/activity+json"]),
+    {:ok, data} <- Poison.decode(body)
+      do
+      user_data = %{
+        ap_id: data["id"],
+        info: %{
+          "ap_enabled" => true,
+          "source_data" => data
+        },
+        nickname: "#{data["preferredUsername"]}@#{URI.parse(ap_id).host}",
+        name: data["name"]
+      }
+
+      User.insert_or_update_user(user_data)
+    end
+  end
+
+  def publish(actor, activity) do
+    remote_users = Pleroma.Web.Salmon.remote_users(activity)
+    {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
+    Enum.each remote_users, fn(user) ->
+      if user.info["ap_enabled"] do
+        inbox = user.info["source_data"]["inbox"]
+        Logger.info("Federating #{activity.data["id"]} to #{inbox}")
+        host = URI.parse(inbox).host
+        signature = Pleroma.Web.HTTPSignatures.sign(actor, %{host: host})
+        @httpoison.post(inbox, Poison.encode!(data), [{"Content-Type", "application/activity+json"}, {"signature", signature}])
+      end
+    end
+  end
 end