From f712ee879ab771b5cb9591ae402f52e26a8bebf3 Mon Sep 17 00:00:00 2001
From: Sadposter <hannah+pleroma@coffee-and-dreams.uk>
Date: Mon, 22 Jul 2019 02:43:55 +0000
Subject: [PATCH] Bugfix: muted/blocked user notification streaming

---
 CHANGELOG.md                |  1 +
 lib/pleroma/web/streamer.ex | 40 +++++++++++++++++++++++++++----------
 test/web/streamer_test.exs  | 38 +++++++++++++++++++++++++++++++++++
 3 files changed, 68 insertions(+), 11 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c7214f98..bcdd0615f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Mastodon API: Handling of search timeouts (`/api/v1/search` and `/api/v2/search`)
 - Mastodon API: Embedded relationships not being properly rendered in the Account entity of Status entity
 - Mastodon API: Add `account_id`, `type`, `offset`, and `limit` to search API (`/api/v1/search` and `/api/v2/search`)
+- Mastodon API, streaming: Fix filtering of notifications based on blocks/mutes/thread mutes
 - ActivityPub C2S: follower/following collection pages being inaccessible even when authentifucated if `hide_followers`/ `hide_follows` was set
 - Existing user id not being preserved on insert conflict
 - Rich Media: Parser failing when no TTL can be found by image TTL setters
diff --git a/lib/pleroma/web/streamer.ex b/lib/pleroma/web/streamer.ex
index 4f325113a..86e2dc4dd 100644
--- a/lib/pleroma/web/streamer.ex
+++ b/lib/pleroma/web/streamer.ex
@@ -13,6 +13,7 @@ defmodule Pleroma.Web.Streamer do
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.Visibility
+  alias Pleroma.Web.CommonAPI
   alias Pleroma.Web.MastodonAPI.NotificationView
 
   @keepalive_interval :timer.seconds(30)
@@ -118,10 +119,14 @@ def handle_cast(
     topics
     |> Map.get("#{topic}:#{item.user_id}", [])
     |> Enum.each(fn socket ->
-      send(
-        socket.transport_pid,
-        {:text, represent_notification(socket.assigns[:user], item)}
-      )
+      with %User{} = user <- User.get_cached_by_ap_id(socket.assigns[:user].ap_id),
+           true <- should_send?(user, item),
+           false <- CommonAPI.thread_muted?(user, item.activity) do
+        send(
+          socket.transport_pid,
+          {:text, represent_notification(socket.assigns[:user], item)}
+        )
+      end
     end)
 
     {:noreply, topics}
@@ -225,19 +230,32 @@ defp represent_notification(%User{} = user, %Notification{} = notify) do
     |> Jason.encode!()
   end
 
+  defp should_send?(%User{} = user, %Activity{} = item) do
+    blocks = user.info.blocks || []
+    mutes = user.info.mutes || []
+    reblog_mutes = user.info.muted_reblogs || []
+
+    with parent when not is_nil(parent) <- Object.normalize(item),
+         true <- Enum.all?([blocks, mutes, reblog_mutes], &(item.actor not in &1)),
+         true <- Enum.all?([blocks, mutes], &(parent.data["actor"] not in &1)),
+         true <- thread_containment(item, user) do
+      true
+    else
+      _ -> false
+    end
+  end
+
+  defp should_send?(%User{} = user, %Notification{activity: activity}) do
+    should_send?(user, activity)
+  end
+
   def push_to_socket(topics, topic, %Activity{data: %{"type" => "Announce"}} = item) do
     Enum.each(topics[topic] || [], fn socket ->
       # Get the current user so we have up-to-date blocks etc.
       if socket.assigns[:user] do
         user = User.get_cached_by_ap_id(socket.assigns[:user].ap_id)
-        blocks = user.info.blocks || []
-        mutes = user.info.mutes || []
-        reblog_mutes = user.info.muted_reblogs || []
 
-        with parent when not is_nil(parent) <- Object.normalize(item),
-             true <- Enum.all?([blocks, mutes, reblog_mutes], &(item.actor not in &1)),
-             true <- Enum.all?([blocks, mutes], &(parent.data["actor"] not in &1)),
-             true <- thread_containment(item, user) do
+        if should_send?(user, item) do
           send(socket.transport_pid, {:text, represent_update(item, user)})
         end
       else
diff --git a/test/web/streamer_test.exs b/test/web/streamer_test.exs
index 4633d7765..8f56e7486 100644
--- a/test/web/streamer_test.exs
+++ b/test/web/streamer_test.exs
@@ -65,6 +65,44 @@ test "it sends notify to in the 'user:notification' stream", %{user: user, notif
       Streamer.stream("user:notification", notify)
       Task.await(task)
     end
+
+    test "it doesn't send notify to the 'user:notification' stream when a user is blocked", %{
+      user: user
+    } do
+      blocked = insert(:user)
+      {:ok, user} = User.block(user, blocked)
+
+      task = Task.async(fn -> refute_receive {:text, _}, 4_000 end)
+
+      Streamer.add_socket(
+        "user:notification",
+        %{transport_pid: task.pid, assigns: %{user: user}}
+      )
+
+      {:ok, activity} = CommonAPI.post(user, %{"status" => ":("})
+      {:ok, notif, _} = CommonAPI.favorite(activity.id, blocked)
+
+      Streamer.stream("user:notification", notif)
+      Task.await(task)
+    end
+
+    test "it doesn't send notify to the 'user:notification' stream when a thread is muted", %{
+      user: user
+    } do
+      user2 = insert(:user)
+      task = Task.async(fn -> refute_receive {:text, _}, 4_000 end)
+
+      Streamer.add_socket(
+        "user:notification",
+        %{transport_pid: task.pid, assigns: %{user: user}}
+      )
+
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "super hot take"})
+      {:ok, activity} = CommonAPI.add_mute(user, activity)
+      {:ok, notif, _} = CommonAPI.favorite(activity.id, user2)
+      Streamer.stream("user:notification", notif)
+      Task.await(task)
+    end
   end
 
   test "it sends to public" do