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diff --git a/changelog.d/get-actor-crash.fix b/changelog.d/get-actor-crash.fix
new file mode 100644
index 000000000..591ac3ba2
--- /dev/null
+++ b/changelog.d/get-actor-crash.fix
@@ -0,0 +1 @@
+Reject fetched objects whose author has no id instead of crashing
diff --git a/lib/pleroma/object/containment.ex b/lib/pleroma/object/containment.ex
index fe42bfa69..531100cbb 100644
--- a/lib/pleroma/object/containment.ex
+++ b/lib/pleroma/object/containment.ex
@@ -44,6 +44,9 @@ defmodule Pleroma.Object.Containment do
id
end
+ # remote data can carry any shape here; callers treat nil as "no actor"
+ def get_actor(_), do: nil
+
def get_object(%{"object" => id}) when is_binary(id) do
id
end
diff --git a/test/pleroma/object/containment_test.exs b/test/pleroma/object/containment_test.exs
index 1319064f2..2fdc83605 100644
--- a/test/pleroma/object/containment_test.exs
+++ b/test/pleroma/object/containment_test.exs
@@ -128,6 +128,24 @@ defmodule Pleroma.Object.ContainmentTest do
end
end
+ describe "get_actor/1" do
+ test "returns nil for actor shapes without an id" do
+ for actor <- [%{"type" => "Person"}, %{"id" => 1}, 1, true] do
+ assert nil == Containment.get_actor(%{"actor" => actor})
+ assert nil == Containment.get_actor(%{"actor" => nil, "attributedTo" => actor})
+ end
+
+ assert nil == Containment.get_actor(%{})
+ end
+
+ test "contain_origin/2 rejects actor shapes without an id" do
+ assert :error ==
+ Containment.contain_origin("https://a.test/o/1", %{
+ "attributedTo" => %{"type" => "Person"}
+ })
+ end
+ end
+
describe "contain_id_to_fetch/2" do
test "matches the exact id" do
assert :ok =
diff --git a/test/pleroma/object/fetcher_test.exs b/test/pleroma/object/fetcher_test.exs
index c9c4890cd..61a6fb517 100644
--- a/test/pleroma/object/fetcher_test.exs
+++ b/test/pleroma/object/fetcher_test.exs
@@ -488,6 +488,24 @@ defmodule Pleroma.Object.FetcherTest do
assert Object.get_by_ap_id("https://mastodon.social/1").data["content"] == "test 1"
end
+ test "it rejects a refetched object whose author has no id", %{object1: object1} do
+ {:ok, o} = Object.create(object1)
+
+ mock(fn %{method: :get, url: "https://mastodon.social/1"} ->
+ %Tesla.Env{
+ status: 200,
+ headers: [{"content-type", "application/activity+json"}],
+ body:
+ object1
+ |> Map.delete("actor")
+ |> Map.put("attributedTo", %{"type" => "Person"})
+ |> Jason.encode!()
+ }
+ end)
+
+ assert {:error, _} = Fetcher.refetch_object(o)
+ end
+
test "it rejects a refetched object whose id changed", %{object1: object1} do
{:ok, o} = Object.create(object1)
@@ -909,6 +927,25 @@ defmodule Pleroma.Object.FetcherTest do
)
end
+ test "it rejects objects whose author has no id" do
+ mock(fn %{method: :get, url: "https://host.test/objects/anon" = url} ->
+ %Tesla.Env{
+ status: 200,
+ headers: [{"content-type", "application/activity+json"}],
+ body:
+ Jason.encode!(%{
+ "id" => url,
+ "type" => "Note",
+ "content" => "anon",
+ "attributedTo" => %{"type" => "Person", "name" => "nobody"}
+ })
+ }
+ end)
+
+ assert {:containment, :error} =
+ Fetcher.fetch_object_from_id("https://host.test/objects/anon")
+ end
+
test "it rejects documents without an id" do
assert {:error, _} =
Fetcher.fetch_and_contain_remote_object_from_id("https://host.test/objects/no-id")

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