Merge branch 'develop' of git.pleroma.social:pleroma/pleroma into chat-federation...
[akkoma] / lib / pleroma / web / activity_pub / activity_pub.ex
index 5b519033eac9232db801e71a0091fbf7ccfbaee8..8da5cf938be96a3a12d5ab6130a9fb11757f173f 100644 (file)
@@ -10,6 +10,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   alias Pleroma.Constants
   alias Pleroma.Conversation
   alias Pleroma.Conversation.Participation
+  alias Pleroma.Filter
   alias Pleroma.Maps
   alias Pleroma.Notification
   alias Pleroma.Object
@@ -32,25 +33,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   require Logger
   require Pleroma.Constants
 
-  # For Announce activities, we filter the recipients based on following status for any actors
-  # that match actual users.  See issue #164 for more information about why this is necessary.
-  defp get_recipients(%{"type" => "Announce"} = data) do
-    to = Map.get(data, "to", [])
-    cc = Map.get(data, "cc", [])
-    bcc = Map.get(data, "bcc", [])
-    actor = User.get_cached_by_ap_id(data["actor"])
-
-    recipients =
-      Enum.filter(Enum.concat([to, cc, bcc]), fn recipient ->
-        case User.get_cached_by_ap_id(recipient) do
-          nil -> true
-          user -> User.following?(user, actor)
-        end
-      end)
-
-    {recipients, to, cc}
-  end
-
   defp get_recipients(%{"type" => "Create"} = data) do
     to = Map.get(data, "to", [])
     cc = Map.get(data, "cc", [])
@@ -113,7 +95,14 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp increase_poll_votes_if_vote(_create_data), do: :noop
 
+  @object_types ["ChatMessage"]
   @spec persist(map(), keyword()) :: {:ok, Activity.t() | Object.t()}
+  def persist(%{"type" => type} = object, meta) when type in @object_types do
+    with {:ok, object} <- Object.create(object) do
+      {:ok, object, meta}
+    end
+  end
+
   def persist(object, meta) do
     with local <- Keyword.fetch!(meta, :local),
          {recipients, _, _} <- get_recipients(object),
@@ -222,7 +211,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       conversation = Repo.preload(conversation, :participations)
 
       last_activity_id =
-        fetch_latest_activity_id_for_context(conversation.ap_id, %{
+        fetch_latest_direct_activity_id_for_context(conversation.ap_id, %{
           user: user,
           blocking_user: user
         })
@@ -333,49 +322,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  @spec update(map()) :: {:ok, Activity.t()} | {:error, any()}
-  def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
-    local = !(params[:local] == false)
-    activity_id = params[:activity_id]
-
-    data =
-      %{
-        "to" => to,
-        "cc" => cc,
-        "type" => "Update",
-        "actor" => actor,
-        "object" => object
-      }
-      |> Maps.put_if_present("id", activity_id)
-
-    with {:ok, activity} <- insert(data, local),
-         _ <- notify_and_stream(activity),
-         :ok <- maybe_federate(activity) do
-      {:ok, activity}
-    end
-  end
-
-  @spec follow(User.t(), User.t(), String.t() | nil, boolean()) ::
-          {:ok, Activity.t()} | {:error, any()}
-  def follow(follower, followed, activity_id \\ nil, local \\ true) do
-    with {:ok, result} <-
-           Repo.transaction(fn -> do_follow(follower, followed, activity_id, local) end) do
-      result
-    end
-  end
-
-  defp do_follow(follower, followed, activity_id, local) do
-    data = make_follow_data(follower, followed, activity_id)
-
-    with {:ok, activity} <- insert(data, local),
-         _ <- notify_and_stream(activity),
-         :ok <- maybe_federate(activity) do
-      {:ok, activity}
-    else
-      {:error, error} -> Repo.rollback(error)
-    end
-  end
-
   @spec unfollow(User.t(), User.t(), String.t() | nil, boolean()) ::
           {:ok, Activity.t()} | nil | {:error, any()}
   def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
@@ -399,33 +345,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  @spec block(User.t(), User.t(), String.t() | nil, boolean()) ::
-          {:ok, Activity.t()} | {:error, any()}
-  def block(blocker, blocked, activity_id \\ nil, local \\ true) do
-    with {:ok, result} <-
-           Repo.transaction(fn -> do_block(blocker, blocked, activity_id, local) end) do
-      result
-    end
-  end
-
-  defp do_block(blocker, blocked, activity_id, local) do
-    unfollow_blocked = Config.get([:activitypub, :unfollow_blocked])
-
-    if unfollow_blocked and fetch_latest_follow(blocker, blocked) do
-      unfollow(blocker, blocked, nil, local)
-    end
-
-    block_data = make_block_data(blocker, blocked, activity_id)
-
-    with {:ok, activity} <- insert(block_data, local),
-         _ <- notify_and_stream(activity),
-         :ok <- maybe_federate(activity) do
-      {:ok, activity}
-    else
-      {:error, error} -> Repo.rollback(error)
-    end
-  end
-
   @spec flag(map()) :: {:ok, Activity.t()} | {:error, any()}
   def flag(
         %{
@@ -506,6 +425,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> maybe_set_thread_muted_field(opts)
     |> restrict_blocked(opts)
     |> restrict_recipients(recipients, opts[:user])
+    |> restrict_filtered(opts)
     |> where(
       [activity],
       fragment(
@@ -528,11 +448,12 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> Repo.all()
   end
 
-  @spec fetch_latest_activity_id_for_context(String.t(), keyword() | map()) ::
+  @spec fetch_latest_direct_activity_id_for_context(String.t(), keyword() | map()) ::
           FlakeId.Ecto.CompatType.t() | nil
-  def fetch_latest_activity_id_for_context(context, opts \\ %{}) do
+  def fetch_latest_direct_activity_id_for_context(context, opts \\ %{}) do
     context
     |> fetch_activities_for_context_query(Map.merge(%{skip_preload: true}, opts))
+    |> restrict_visibility(%{visibility: "direct"})
     |> limit(1)
     |> select([a], a.id)
     |> Repo.one()
@@ -713,6 +634,26 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  defp restrict_announce_object_actor(_query, %{announce_filtering_user: _, skip_preload: true}) do
+    raise "Can't use the child object without preloading!"
+  end
+
+  defp restrict_announce_object_actor(query, %{announce_filtering_user: %{ap_id: actor}}) do
+    from(
+      [activity, object] in query,
+      where:
+        fragment(
+          "?->>'type' != ? or ?->>'actor' != ?",
+          activity.data,
+          "Announce",
+          object.data,
+          ^actor
+        )
+    )
+  end
+
+  defp restrict_announce_object_actor(query, _), do: query
+
   defp restrict_since(query, %{since_id: ""}), do: query
 
   defp restrict_since(query, %{since_id: since_id}) do
@@ -824,7 +765,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp restrict_media(query, %{only_media: true}) do
     from(
-      [_activity, object] in query,
+      [activity, object] in query,
+      where: fragment("(?)->>'type' = ?", activity.data, "Create"),
       where: fragment("not (?)->'attachment' = (?)", object.data, ^[])
     )
   end
@@ -999,6 +941,26 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp restrict_instance(query, _), do: query
 
+  defp restrict_filtered(query, %{user: %User{} = user}) do
+    case Filter.compose_regex(user) do
+      nil ->
+        query
+
+      regex ->
+        from([activity, object] in query,
+          where:
+            fragment("not(?->>'content' ~* ?)", object.data, ^regex) or
+              activity.actor == ^user.ap_id
+        )
+    end
+  end
+
+  defp restrict_filtered(query, %{blocking_user: %User{} = user}) do
+    restrict_filtered(query, %{user: user})
+  end
+
+  defp restrict_filtered(query, _), do: query
+
   defp exclude_poll_votes(query, %{include_poll_votes: true}), do: query
 
   defp exclude_poll_votes(query, _) do
@@ -1011,6 +973,18 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  defp exclude_chat_messages(query, %{include_chat_messages: true}), do: query
+
+  defp exclude_chat_messages(query, _) do
+    if has_named_binding?(query, :object) do
+      from([activity, object: o] in query,
+        where: fragment("not(?->>'type' = ?)", o.data, "ChatMessage")
+      )
+    else
+      query
+    end
+  end
+
   defp exclude_invisible_actors(query, %{invisible_actors: true}), do: query
 
   defp exclude_invisible_actors(query, _opts) do
@@ -1117,6 +1091,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> restrict_favorited_by(opts)
     |> restrict_blocked(restrict_blocked_opts)
     |> restrict_muted(restrict_muted_opts)
+    |> restrict_filtered(opts)
     |> restrict_media(opts)
     |> restrict_visibility(opts)
     |> restrict_thread_visibility(opts, config)
@@ -1124,8 +1099,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> restrict_pinned(opts)
     |> restrict_muted_reblogs(restrict_muted_reblogs_opts)
     |> restrict_instance(opts)
+    |> restrict_announce_object_actor(opts)
+    |> restrict_filtered(opts)
     |> Activity.restrict_deactivated_users()
     |> exclude_poll_votes(opts)
+    |> exclude_chat_messages(opts)
     |> exclude_invisible_actors(opts)
     |> exclude_visibility(opts)
   end
@@ -1149,12 +1127,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> Activity.Queries.by_type("Like")
     |> Activity.with_joined_object()
     |> Object.with_joined_activity()
-    |> select([_like, object, activity], %{activity | object: object})
+    |> select([like, object, activity], %{activity | object: object, pagination_id: like.id})
     |> order_by([like, _, _], desc_nulls_last: like.id)
     |> Pagination.fetch_paginated(
       Map.merge(params, %{skip_order: true}),
-      pagination,
-      :object_activity
+      pagination
     )
   end
 
@@ -1249,6 +1226,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       end)
 
     locked = data["manuallyApprovesFollowers"] || false
+    capabilities = data["capabilities"] || %{}
+    accepts_chat_messages = capabilities["acceptsChatMessages"]
     data = Transmogrifier.maybe_fix_user_object(data)
     discoverable = data["discoverable"] || false
     invisible = data["invisible"] || false
@@ -1287,7 +1266,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       also_known_as: Map.get(data, "alsoKnownAs", []),
       public_key: public_key,
       inbox: data["inbox"],
-      shared_inbox: shared_inbox
+      shared_inbox: shared_inbox,
+      accepts_chat_messages: accepts_chat_messages
     }
 
     # nickname can be nil because of virtual actors
@@ -1396,6 +1376,16 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  def maybe_handle_clashing_nickname(nickname) do
+    with %User{} = old_user <- User.get_by_nickname(nickname) do
+      Logger.info("Found an old user for #{nickname}, ap id is #{old_user.ap_id}, renaming.")
+
+      old_user
+      |> User.remote_user_changeset(%{nickname: "#{old_user.id}.#{old_user.nickname}"})
+      |> User.update_and_set_cache()
+    end
+  end
+
   def make_user_from_ap_id(ap_id) do
     user = User.get_cached_by_ap_id(ap_id)
 
@@ -1408,6 +1398,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
           |> User.remote_user_changeset(data)
           |> User.update_and_set_cache()
         else
+          maybe_handle_clashing_nickname(data[:nickname])
+
           data
           |> User.remote_user_changeset()
           |> Repo.insert()