Merge branch 'feature/mrf-describe' into 'develop'

MRF describe API

See merge request pleroma/pleroma!1561

lib/pleroma/web/activity_pub/mrf.ex

@@ -35,4 +35,36 @@ def subdomains_regex(domains) when is_list(domains) do
   def subdomain_match?(domains, host) do
     Enum.any?(domains, fn domain -> Regex.match?(domain, host) end)
   end
+
+  @callback describe() :: {:ok | :error, Map.t()}
+
+  def describe(policies) do
+    {:ok, policy_configs} =
+      policies
+      |> Enum.reduce({:ok, %{}}, fn
+        policy, {:ok, data} ->
+          {:ok, policy_data} = policy.describe()
+          {:ok, Map.merge(data, policy_data)}
+
+        _, error ->
+          error
+      end)
+
+    mrf_policies =
+      get_policies()
+      |> Enum.map(fn policy -> to_string(policy) |> String.split(".") |> List.last() end)
+
+    exclusions = Pleroma.Config.get([:instance, :mrf_transparency_exclusions])
+
+    base =
+      %{
+        mrf_policies: mrf_policies,
+        exclusions: length(exclusions) > 0
+      }
+      |> Map.merge(policy_configs)
+
+    {:ok, base}
+  end
+
+  def describe, do: get_policies() |> describe()
 end

lib/pleroma/web/activity_pub/mrf/anti_followbot_policy.ex

@@ -62,4 +62,7 @@ def filter(%{"type" => "Follow", "actor" => actor_id} = message) do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex

@@ -5,6 +5,8 @@
 defmodule Pleroma.Web.ActivityPub.MRF.AntiLinkSpamPolicy do
   alias Pleroma.User
 
+  @behaviour Pleroma.Web.ActivityPub.MRF
+
   require Logger
 
   # has the user successfully posted before?
@@ -22,6 +24,7 @@ defp contains_links?(%{"content" => content} = _object) do
 
   defp contains_links?(_), do: false
 
+  @impl true
   def filter(%{"type" => "Create", "actor" => actor, "object" => object} = message) do
     with {:ok, %User{} = u} <- User.get_or_fetch_by_ap_id(actor),
          {:contains_links, true} <- {:contains_links, contains_links?(object)},
@@ -45,4 +48,7 @@ def filter(%{"type" => "Create", "actor" => actor, "object" => object} = message
 
   # in all other cases, pass through
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/drop_policy.ex

@@ -12,4 +12,7 @@ def filter(object) do
     Logger.info("REJECTING #{inspect(object)}")
     {:reject, object}
   end
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/ensure_re_prepended.ex

@@ -39,4 +39,6 @@ def filter(%{"type" => "Create", "object" => child_object} = object) do
   end
 
   def filter(object), do: {:ok, object}
+
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex

@@ -90,4 +90,7 @@ def filter(%{"type" => "Create"} = message) do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{mrf_hellthread: Pleroma.Config.get([:mrf_hellthread])}}
 end

lib/pleroma/web/activity_pub/mrf/keyword_policy.ex

@@ -96,4 +96,36 @@ def filter(%{"type" => "Create", "object" => %{"content" => _content}} = message
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe do
+    # This horror is needed to convert regex sigils to strings
+    mrf_keyword =
+      Pleroma.Config.get(:mrf_keyword, [])
+      |> Enum.map(fn {key, value} ->
+        {key,
+         Enum.map(value, fn
+           {pattern, replacement} ->
+             %{
+               "pattern" =>
+                 if not is_binary(pattern) do
+                   inspect(pattern)
+                 else
+                   pattern
+                 end,
+               "replacement" => replacement
+             }
+
+           pattern ->
+             if not is_binary(pattern) do
+               inspect(pattern)
+             else
+               pattern
+             end
+         end)}
+      end)
+      |> Enum.into(%{})
+
+    {:ok, %{mrf_keyword: mrf_keyword}}
+  end
 end

lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex

@@ -53,4 +53,7 @@ def filter(
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/mention_policy.ex

@@ -21,4 +21,7 @@ def filter(%{"type" => "Create"} = message) do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/no_placeholder_text_policy.ex

@@ -19,4 +19,7 @@ def filter(
 
   @impl true
   def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/noop_policy.ex

@@ -10,4 +10,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.NoOpPolicy do
   def filter(object) do
     {:ok, object}
   end
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/normalize_markup.ex

@@ -21,4 +21,6 @@ def filter(%{"type" => "Create", "object" => child_object} = object) do
   end
 
   def filter(object), do: {:ok, object}
+
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/reject_non_public.ex

@@ -44,4 +44,7 @@ def filter(%{"type" => "Create"} = object) do
 
   @impl true
   def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe, do: {:ok, %{mrf_rejectnonpublic: Pleroma.Config.get([:mrf_rejectnonpublic])}}
 end

lib/pleroma/web/activity_pub/mrf/simple_policy.ex

@@ -177,4 +177,16 @@ def filter(%{"id" => actor, "type" => obj_type} = object)
   end
 
   def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe do
+    exclusions = Pleroma.Config.get([:instance, :mrf_transparency_exclusions])
+
+    mrf_simple =
+      Pleroma.Config.get(:mrf_simple)
+      |> Enum.map(fn {k, v} -> {k, Enum.reject(v, fn v -> v in exclusions end)} end)
+      |> Enum.into(%{})
+
+    {:ok, %{mrf_simple: mrf_simple}}
+  end
 end

lib/pleroma/web/activity_pub/mrf/subchain_policy.ex

@@ -37,4 +37,7 @@ def filter(%{"actor" => actor} = message) do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/tag_policy.ex

@@ -165,4 +165,7 @@ def filter(%{"actor" => actor, "type" => "Create"} = message),
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end

lib/pleroma/web/activity_pub/mrf/user_allowlist_policy.ex

@@ -32,4 +32,13 @@ def filter(%{"actor" => actor} = object) do
   end
 
   def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe do
+    mrf_user_allowlist =
+      Config.get([:mrf_user_allowlist], [])
+      |> Enum.into(%{}, fn {k, v} -> {k, length(v)} end)
+
+    {:ok, %{mrf_user_allowlist: mrf_user_allowlist}}
+  end
 end

lib/pleroma/web/nodeinfo/nodeinfo_controller.ex

@@ -34,64 +34,18 @@ def schemas(conn, _params) do
   def raw_nodeinfo do
     stats = Stats.get_stats()
 
-    exclusions = Config.get([:instance, :mrf_transparency_exclusions])
-
-    mrf_simple =
-      Config.get(:mrf_simple)
-      |> Enum.map(fn {k, v} -> {k, Enum.reject(v, fn v -> v in exclusions end)} end)
-      |> Enum.into(%{})
-
-    # This horror is needed to convert regex sigils to strings
-    mrf_keyword =
-      Config.get(:mrf_keyword, [])
-      |> Enum.map(fn {key, value} ->
-        {key,
-         Enum.map(value, fn
-           {pattern, replacement} ->
-             %{
-               "pattern" =>
-                 if not is_binary(pattern) do
-                   inspect(pattern)
-                 else
-                   pattern
-                 end,
-               "replacement" => replacement
-             }
-
-           pattern ->
-             if not is_binary(pattern) do
-               inspect(pattern)
-             else
-               pattern
-             end
-         end)}
-      end)
-      |> Enum.into(%{})
-
-    mrf_policies =
-      MRF.get_policies()
-      |> Enum.map(fn policy -> to_string(policy) |> String.split(".") |> List.last() end)
-
     quarantined = Config.get([:instance, :quarantined_instances], [])
 
     staff_accounts =
       User.all_superusers()
       |> Enum.map(fn u -> u.ap_id end)
 
-    mrf_user_allowlist =
-      Config.get([:mrf_user_allowlist], [])
-      |> Enum.into(%{}, fn {k, v} -> {k, length(v)} end)
-
     federation_response =
       if Config.get([:instance, :mrf_transparency]) do
-        %{
+        {:ok, data} = MRF.describe()
-          mrf_policies: mrf_policies,
+
-          mrf_simple: mrf_simple,
+        data
-          mrf_keyword: mrf_keyword,
+        |> Map.merge(%{quarantined_instances: quarantined})
-          mrf_user_allowlist: mrf_user_allowlist,
-          quarantined_instances: quarantined,
-          exclusions: length(exclusions) > 0
-        }
       else
         %{}
       end

test/support/mrf_module_mock.ex

@@ -0,0 +1,13 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule MRFModuleMock do
+  @behaviour Pleroma.Web.ActivityPub.MRF
+
+  @impl true
+  def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{mrf_module_mock: "some config data"}}
+end

test/web/activity_pub/mrf/mrf_test.exs

@@ -57,4 +57,30 @@ test "matches are case-insensitive" do
       refute MRF.subdomain_match?(regexes, "example.com")
     end
   end
+
+  describe "describe/0" do
+    test "it works as expected with noop policy" do
+      expected = %{
+        mrf_policies: ["NoOpPolicy"],
+        exclusions: false
+      }
+
+      {:ok, ^expected} = MRF.describe()
+    end
+
+    test "it works as expected with mock policy" do
+      config = Pleroma.Config.get([:instance, :rewrite_policy])
+      Pleroma.Config.put([:instance, :rewrite_policy], [MRFModuleMock])
+
+      expected = %{
+        mrf_policies: ["MRFModuleMock"],
+        mrf_module_mock: "some config data",
+        exclusions: false
+      }
+
+      {:ok, ^expected} = MRF.describe()
+
+      Pleroma.Config.put([:instance, :rewrite_policy], config)
+    end
+  end
 end

test/web/node_info_test.exs

@@ -85,6 +85,9 @@ test "it returns the safe_dm_mentions feature if enabled", %{conn: conn} do
   end
 
   test "it shows MRF transparency data if enabled", %{conn: conn} do
+    config = Pleroma.Config.get([:instance, :rewrite_policy])
+    Pleroma.Config.put([:instance, :rewrite_policy], [Pleroma.Web.ActivityPub.MRF.SimplePolicy])
+
     option = Pleroma.Config.get([:instance, :mrf_transparency])
     Pleroma.Config.put([:instance, :mrf_transparency], true)
 
@@ -98,11 +101,15 @@ test "it shows MRF transparency data if enabled", %{conn: conn} do
 
     assert response["metadata"]["federation"]["mrf_simple"] == simple_config
 
+    Pleroma.Config.put([:instance, :rewrite_policy], config)
     Pleroma.Config.put([:instance, :mrf_transparency], option)
     Pleroma.Config.put(:mrf_simple, %{})
   end
 
   test "it performs exclusions from MRF transparency data if configured", %{conn: conn} do
+    config = Pleroma.Config.get([:instance, :rewrite_policy])
+    Pleroma.Config.put([:instance, :rewrite_policy], [Pleroma.Web.ActivityPub.MRF.SimplePolicy])
+
     option = Pleroma.Config.get([:instance, :mrf_transparency])
     Pleroma.Config.put([:instance, :mrf_transparency], true)
 
@@ -122,6 +129,7 @@ test "it performs exclusions from MRF transparency data if configured", %{conn:
     assert response["metadata"]["federation"]["mrf_simple"] == expected_config
     assert response["metadata"]["federation"]["exclusions"] == true
 
+    Pleroma.Config.put([:instance, :rewrite_policy], config)
     Pleroma.Config.put([:instance, :mrf_transparency], option)
     Pleroma.Config.put([:instance, :mrf_transparency_exclusions], exclusions)
     Pleroma.Config.put(:mrf_simple, %{})