Allow unified streaming endpoint

lib/pleroma/web/mastodon_api/websocket_handler.ex

@@ -32,8 +32,15 @@ def init(%{qs: qs} = req, state) do
           req
         end
 
+      topics =
+        if topic do
+          [topic]
+        else
+          []
+        end
+
       {:cowboy_websocket, req,
-       %{user: user, topic: topic, oauth_token: oauth_token, count: 0, timer: nil},
+       %{user: user, topics: topics, oauth_token: oauth_token, count: 0, timer: nil},
        %{idle_timeout: @timeout}}
     else
       {:error, :bad_topic} ->
@@ -50,10 +57,10 @@ def init(%{qs: qs} = req, state) do
 
   def websocket_init(state) do
     Logger.debug(
-      "#{__MODULE__} accepted websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topic #{state.topic}"
+      "#{__MODULE__} accepted websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topics #{state.topics}"
     )
 
-    Streamer.add_socket(state.topic, state.oauth_token)
+    Enum.each(state.topics, fn topic -> Streamer.add_socket(topic, state.oauth_token) end)
     {:ok, %{state | timer: timer()}}
   end
 
@@ -109,10 +116,10 @@ def terminate(_reason, _req, []), do: :ok
 
   def terminate(reason, _req, state) do
     Logger.debug(
-      "#{__MODULE__} terminating websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topic #{state.topic || "?"}: #{inspect(reason)}"
+      "#{__MODULE__} terminating websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topics #{state.topics || "?"}: #{inspect(reason)}"
     )
 
-    Streamer.remove_socket(state.topic)
+    Enum.each(state.topics, fn topic -> Streamer.remove_socket(topic) end)
     :ok
   end
 

lib/pleroma/web/streamer.ex

@@ -59,10 +59,14 @@ defp can_access_stream(user, oauth_token, kind) do
   end
 
   @doc "Expand and authorizes a stream"
-  @spec get_topic(stream :: String.t(), User.t() | nil, Token.t() | nil, Map.t()) ::
-          {:ok, topic :: String.t()} | {:error, :bad_topic}
+  @spec get_topic(stream :: String.t() | nil, User.t() | nil, Token.t() | nil, Map.t()) ::
+          {:ok, topic :: String.t() | nil} | {:error, :bad_topic}
   def get_topic(stream, user, oauth_token, params \\ %{})
 
+  def get_topic(nil = _stream, _user, _oauth_token, _params) do
+    {:ok, nil}
+  end
+
   # Allow all public steams if the instance allows unauthenticated access.
   # Otherwise, only allow users with valid oauth tokens.
   def get_topic(stream, user, oauth_token, _params) when stream in @public_streams do

test/pleroma/integration/mastodon_websocket_test.exs

@@ -33,7 +33,6 @@ def start_socket(qs \\ nil, headers \\ []) do
 
   test "refuses invalid requests" do
     capture_log(fn ->
-      assert {:error, %WebSockex.RequestError{code: 404}} = start_socket()
       assert {:error, %WebSockex.RequestError{code: 404}} = start_socket("?stream=ncjdk")
       Process.sleep(30)
     end)
@@ -49,6 +48,10 @@ test "requires authentication and a valid token for protected streams" do
     end)
   end
 
+  test "allows unified stream" do
+    assert {:ok, _} = start_socket()
+  end
+
   test "allows public streams without authentication" do
     assert {:ok, _} = start_socket("?stream=public")
     assert {:ok, _} = start_socket("?stream=public:local")

test/pleroma/web/streamer_test.exs

@@ -22,6 +22,10 @@ defmodule Pleroma.Web.StreamerTest do
   setup do: clear_config([:instance, :skip_thread_containment])
 
   describe "get_topic/_ (unauthenticated)" do
+    test "allows no stream" do
+      assert {:ok, nil} = Streamer.get_topic(nil, nil, nil)
+    end
+
     test "allows public" do
       assert {:ok, "public"} = Streamer.get_topic("public", nil, nil)
       assert {:ok, "public:local"} = Streamer.get_topic("public:local", nil, nil)