Merge branch 'develop' into fix/csp-for-captcha
[akkoma] / lib / pleroma / web / activity_pub / activity_pub.ex
index a5f8ba40a0efab5366c16a3ffd482e3bb57acbc8..1c29088059233c65b83c812edfece12ce2e65115 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", [])
@@ -229,7 +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
         })
@@ -340,50 +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(), keyword()) ::
-          {:ok, Activity.t()} | {:error, any()}
-  def follow(follower, followed, activity_id \\ nil, local \\ true, opts \\ []) do
-    with {:ok, result} <-
-           Repo.transaction(fn -> do_follow(follower, followed, activity_id, local, opts) end) do
-      result
-    end
-  end
-
-  defp do_follow(follower, followed, activity_id, local, opts) do
-    skip_notify_and_stream = Keyword.get(opts, :skip_notify_and_stream, false)
-    data = make_follow_data(follower, followed, activity_id)
-
-    with {:ok, activity} <- insert(data, local),
-         _ <- skip_notify_and_stream || 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
@@ -407,33 +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(
         %{
@@ -514,6 +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(
@@ -536,11 +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()
@@ -721,6 +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
@@ -832,7 +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
@@ -1007,6 +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
@@ -1137,6 +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)
@@ -1144,6 +1099,8 @@ 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)
@@ -1170,12 +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
 
@@ -1417,6 +1373,16 @@ 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)
 
@@ -1429,6 +1395,8 @@ 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()