Restrict mastodon api announcements to logged-in users only

lib/pleroma/web/api_spec/operations/announcement_operation.ex

@@ -18,6 +18,7 @@ def index_operation do
       tags: ["Announcement"],
       summary: "Retrieve a list of announcements",
       operationId: "MastodonAPI.AnnouncementController.index",
+      security: [%{"oAuth" => []}],
       responses: %{
         200 => Operation.response("Response", "application/json", list_of_announcements()),
         403 => Operation.response("Forbidden", "application/json", ApiError)

lib/pleroma/web/mastodon_api/controllers/announcement_controller.ex

@@ -15,20 +15,18 @@ defmodule Pleroma.Web.MastodonAPI.AnnouncementController do
 
   plug(Pleroma.Web.ApiSpec.CastAndValidate)
 
-  # MastodonAPI specs do not have oauth requirements for showing
-  # announcements, but we have "private instance" options. When that
-  # is set, require read:accounts scope, symmetric to write:accounts
-  # for `mark_read`.
+  # Mastodon docs say this only requires a user token, no scopes needed
+  # As the op `|` requires at least one scope to be present, we use `&` here.
   plug(
     OAuthScopesPlug,
-    %{fallback: :proceed_unauthenticated, scopes: ["read:accounts"]}
-    when action in [:show, :index]
+    %{scopes: [], op: :&}
+    when action in [:index]
   )
 
   # Same as in MastodonAPI specs
   plug(
     OAuthScopesPlug,
-    %{fallback: :proceed_unauthenticated, scopes: ["write:accounts"]}
+    %{scopes: ["write:accounts"]}
     when action in [:mark_read]
   )
 

lib/pleroma/web/router.ex

@@ -582,6 +582,7 @@ defmodule Pleroma.Web.Router do
     get("/timelines/direct", TimelineController, :direct)
     get("/timelines/list/:list_id", TimelineController, :list)
 
+    get("/announcements", AnnouncementController, :index)
     post("/announcements/:id/dismiss", AnnouncementController, :mark_read)
   end
 
@@ -627,8 +628,6 @@ defmodule Pleroma.Web.Router do
     get("/polls/:id", PollController, :show)
 
     get("/directory", DirectoryController, :index)
-
-    get("/announcements", AnnouncementController, :index)
   end
 
   scope "/api/v2", Pleroma.Web.MastodonAPI do

test/pleroma/web/mastodon_api/controllers/announcement_controller_test.exs

@@ -11,19 +11,40 @@ defmodule Pleroma.Web.MastodonAPI.AnnouncementControllerTest do
   alias Pleroma.AnnouncementReadRelationship
 
   describe "GET /api/v1/announcements" do
-    test "it lists all announcements" do
+    setup do
+      %{conn: conn} = oauth_access([])
+      {:ok, conn: conn}
+    end
+
+    test "it does not allow guests", %{conn: conn} do
+      _response =
+        conn
+        |> assign(:token, nil)
+        |> get("/api/v1/announcements")
+        |> json_response_and_validate_schema(:forbidden)
+    end
+
+    test "it allows users with scopes" do
+      %{conn: conn} = oauth_access(["read:accounts"])
+
+      _response =
+        conn
+        |> get("/api/v1/announcements")
+        |> json_response_and_validate_schema(:ok)
+    end
+
+    test "it lists all announcements", %{conn: conn} do
       %{id: id} = insert(:announcement)
 
       response =
-        build_conn()
+        conn
         |> get("/api/v1/announcements")
         |> json_response_and_validate_schema(:ok)
 
       assert [%{"id" => ^id}] = response
-      refute Map.has_key?(Enum.at(response, 0), "read")
     end
 
-    test "it returns time with utc timezone" do
+    test "it returns time with utc timezone", %{conn: conn} do
       start_time =
         NaiveDateTime.utc_now()
         |> NaiveDateTime.add(-999_999, :second)
@@ -37,7 +58,7 @@ test "it returns time with utc timezone" do
       %{id: id} = insert(:announcement, %{starts_at: start_time, ends_at: end_time})
 
       response =
-        build_conn()
+        conn
         |> get("/api/v1/announcements")
         |> json_response_and_validate_schema(:ok)
 
@@ -47,35 +68,33 @@ test "it returns time with utc timezone" do
       assert String.ends_with?(announcement["ends_at"], "Z")
     end
 
-    test "it does not list announcements starting after current time" do
+    test "it does not list announcements starting after current time", %{conn: conn} do
       time = NaiveDateTime.utc_now() |> NaiveDateTime.add(999_999, :second)
       insert(:announcement, starts_at: time)
 
       response =
-        build_conn()
+        conn
         |> get("/api/v1/announcements")
         |> json_response_and_validate_schema(:ok)
 
       assert [] = response
     end
 
-    test "it does not list announcements ending before current time" do
+    test "it does not list announcements ending before current time", %{conn: conn} do
       time = NaiveDateTime.utc_now() |> NaiveDateTime.add(-999_999, :second)
       insert(:announcement, ends_at: time)
 
       response =
-        build_conn()
+        conn
         |> get("/api/v1/announcements")
         |> json_response_and_validate_schema(:ok)
 
       assert [] = response
     end
 
-    test "when authenticated, also expose read property" do
+    test "when authenticated, also expose read property", %{conn: conn} do
       %{id: id} = insert(:announcement)
 
-      %{conn: conn} = oauth_access(["read:accounts"])
-
       response =
         conn
         |> get("/api/v1/announcements")