Merge branch 'nsfw-api-mrf' into 'develop'

NSFW API Policy

See merge request pleroma/pleroma!3471

1 files changed, 267 insertions, 0 deletions

diff --git a/test/pleroma/web/activity_pub/mrf/nsfw_api_policy_test.exs b/test/pleroma/web/activity_pub/mrf/nsfw_api_policy_test.exs
new file mode 100644
index 000000000..0beb9c2cb
--- /dev/null
+++ b/test/pleroma/web/activity_pub/mrf/nsfw_api_policy_test.exs
@@ -0,0 +1,267 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.NsfwApiPolicyTest do
+  use Pleroma.DataCase
+
+  import ExUnit.CaptureLog
+  import Pleroma.Factory
+
+  alias Pleroma.Constants
+  alias Pleroma.Web.ActivityPub.MRF.NsfwApiPolicy
+
+  require Pleroma.Constants
+
+  @policy :mrf_nsfw_api
+
+  @sfw_url "https://kittens.co/kitty.gif"
+  @nsfw_url "https://b00bies.com/nsfw.jpg"
+  @timeout_url "http://time.out/i.jpg"
+
+  setup_all do
+    clear_config(@policy,
+      url: "http://127.0.0.1:5000/",
+      threshold: 0.7,
+      mark_sensitive: true,
+      unlist: false,
+      reject: false
+    )
+  end
+
+  setup do
+    Tesla.Mock.mock(fn
+      # NSFW URL
+      %{method: :get, url: "http://127.0.0.1:5000/?url=#{@nsfw_url}"} ->
+        %Tesla.Env{status: 200, body: ~s({"score":0.99772077798843384,"url":"#{@nsfw_url}"})}
+
+      # SFW URL
+      %{method: :get, url: "http://127.0.0.1:5000/?url=#{@sfw_url}"} ->
+        %Tesla.Env{status: 200, body: ~s({"score":0.00011714912398019806,"url":"#{@sfw_url}"})}
+
+      # Timeout URL
+      %{method: :get, url: "http://127.0.0.1:5000/?url=#{@timeout_url}"} ->
+        {:error, :timeout}
+
+      # Fallback URL
+      %{method: :get, url: "http://127.0.0.1:5000/?url=" <> url} ->
+        body =
+          ~s({"error_code":500,"error_reason":"[Errno -2] Name or service not known","url":"#{url}"})
+
+        %Tesla.Env{status: 500, body: body}
+    end)
+
+    :ok
+  end
+
+  describe "build_request_url/1" do
+    test "it works" do
+      expected = "http://127.0.0.1:5000/?url=https://b00bies.com/nsfw.jpg"
+      assert NsfwApiPolicy.build_request_url(@nsfw_url) == expected
+    end
+
+    test "it adds a trailing slash" do
+      clear_config([@policy, :url], "http://localhost:5000")
+
+      expected = "http://localhost:5000/?url=https://b00bies.com/nsfw.jpg"
+      assert NsfwApiPolicy.build_request_url(@nsfw_url) == expected
+    end
+
+    test "it adds a trailing slash preserving the path" do
+      clear_config([@policy, :url], "http://localhost:5000/nsfw_api")
+
+      expected = "http://localhost:5000/nsfw_api/?url=https://b00bies.com/nsfw.jpg"
+      assert NsfwApiPolicy.build_request_url(@nsfw_url) == expected
+    end
+  end
+
+  describe "parse_url/1" do
+    test "returns decoded JSON from the API server" do
+      expected = %{"score" => 0.99772077798843384, "url" => @nsfw_url}
+      assert NsfwApiPolicy.parse_url(@nsfw_url) == {:ok, expected}
+    end
+
+    test "warns when the API server fails" do
+      expected = "[NsfwApiPolicy]: The API server failed. Skipping."
+      assert capture_log(fn -> NsfwApiPolicy.parse_url(@timeout_url) end) =~ expected
+    end
+
+    test "returns {:error, _} tuple when the API server fails" do
+      capture_log(fn ->
+        assert {:error, _} = NsfwApiPolicy.parse_url(@timeout_url)
+      end)
+    end
+  end
+
+  describe "check_url_nsfw/1" do
+    test "returns {:nsfw, _} tuple" do
+      expected = {:nsfw, %{url: @nsfw_url, score: 0.99772077798843384, threshold: 0.7}}
+      assert NsfwApiPolicy.check_url_nsfw(@nsfw_url) == expected
+    end
+
+    test "returns {:sfw, _} tuple" do
+      expected = {:sfw, %{url: @sfw_url, score: 0.00011714912398019806, threshold: 0.7}}
+      assert NsfwApiPolicy.check_url_nsfw(@sfw_url) == expected
+    end
+
+    test "returns {:sfw, _} on failure" do
+      expected = {:sfw, %{url: @timeout_url, score: nil, threshold: 0.7}}
+
+      capture_log(fn ->
+        assert NsfwApiPolicy.check_url_nsfw(@timeout_url) == expected
+      end)
+    end
+
+    test "works with map URL" do
+      expected = {:nsfw, %{url: @nsfw_url, score: 0.99772077798843384, threshold: 0.7}}
+      assert NsfwApiPolicy.check_url_nsfw(%{"href" => @nsfw_url}) == expected
+    end
+  end
+
+  describe "check_attachment_nsfw/1" do
+    test "returns {:nsfw, _} if any items are NSFW" do
+      attachment = %{"url" => [%{"href" => @nsfw_url}, @nsfw_url, @sfw_url]}
+      assert NsfwApiPolicy.check_attachment_nsfw(attachment) == {:nsfw, attachment}
+    end
+
+    test "returns {:sfw, _} if all items are SFW" do
+      attachment = %{"url" => [%{"href" => @sfw_url}, @sfw_url, @sfw_url]}
+      assert NsfwApiPolicy.check_attachment_nsfw(attachment) == {:sfw, attachment}
+    end
+
+    test "works with binary URL" do
+      attachment = %{"url" => @nsfw_url}
+      assert NsfwApiPolicy.check_attachment_nsfw(attachment) == {:nsfw, attachment}
+    end
+  end
+
+  describe "check_object_nsfw/1" do
+    test "returns {:nsfw, _} if any items are NSFW" do
+      object = %{"attachment" => [%{"url" => [%{"href" => @nsfw_url}, @sfw_url]}]}
+      assert NsfwApiPolicy.check_object_nsfw(object) == {:nsfw, object}
+    end
+
+    test "returns {:sfw, _} if all items are SFW" do
+      object = %{"attachment" => [%{"url" => [%{"href" => @sfw_url}, @sfw_url]}]}
+      assert NsfwApiPolicy.check_object_nsfw(object) == {:sfw, object}
+    end
+
+    test "works with embedded object" do
+      object = %{"object" => %{"attachment" => [%{"url" => [%{"href" => @nsfw_url}, @sfw_url]}]}}
+      assert NsfwApiPolicy.check_object_nsfw(object) == {:nsfw, object}
+    end
+  end
+
+  describe "unlist/1" do
+    test "unlist addressing" do
+      user = insert(:user)
+
+      object = %{
+        "to" => [Constants.as_public()],
+        "cc" => [user.follower_address, "https://hello.world/users/alex"],
+        "actor" => user.ap_id
+      }
+
+      expected = %{
+        "to" => [user.follower_address],
+        "cc" => [Constants.as_public(), "https://hello.world/users/alex"],
+        "actor" => user.ap_id
+      }
+
+      assert NsfwApiPolicy.unlist(object) == expected
+    end
+
+    test "raise if user isn't found" do
+      object = %{
+        "to" => [Constants.as_public()],
+        "cc" => [],
+        "actor" => "https://hello.world/users/alex"
+      }
+
+      assert_raise(RuntimeError, fn ->
+        NsfwApiPolicy.unlist(object)
+      end)
+    end
+  end
+
+  describe "mark_sensitive/1" do
+    test "adds nsfw tag and marks sensitive" do
+      object = %{"tag" => ["yolo"]}
+      expected = %{"tag" => ["yolo", "nsfw"], "sensitive" => true}
+      assert NsfwApiPolicy.mark_sensitive(object) == expected
+    end
+
+    test "works with embedded object" do
+      object = %{"object" => %{"tag" => ["yolo"]}}
+      expected = %{"object" => %{"tag" => ["yolo", "nsfw"], "sensitive" => true}}
+      assert NsfwApiPolicy.mark_sensitive(object) == expected
+    end
+  end
+
+  describe "filter/1" do
+    setup do
+      user = insert(:user)
+
+      nsfw_object = %{
+        "to" => [Constants.as_public()],
+        "cc" => [user.follower_address],
+        "actor" => user.ap_id,
+        "attachment" => [%{"url" => @nsfw_url}]
+      }
+
+      sfw_object = %{
+        "to" => [Constants.as_public()],
+        "cc" => [user.follower_address],
+        "actor" => user.ap_id,
+        "attachment" => [%{"url" => @sfw_url}]
+      }
+
+      %{user: user, nsfw_object: nsfw_object, sfw_object: sfw_object}
+    end
+
+    test "passes SFW object through", %{sfw_object: object} do
+      {:ok, _} = NsfwApiPolicy.filter(object)
+    end
+
+    test "passes NSFW object through when actions are disabled", %{nsfw_object: object} do
+      clear_config([@policy, :mark_sensitive], false)
+      clear_config([@policy, :unlist], false)
+      clear_config([@policy, :reject], false)
+      {:ok, _} = NsfwApiPolicy.filter(object)
+    end
+
+    test "passes NSFW object through when :threshold is 1", %{nsfw_object: object} do
+      clear_config([@policy, :reject], true)
+      clear_config([@policy, :threshold], 1)
+      {:ok, _} = NsfwApiPolicy.filter(object)
+    end
+
+    test "rejects SFW object through when :threshold is 0", %{sfw_object: object} do
+      clear_config([@policy, :reject], true)
+      clear_config([@policy, :threshold], 0)
+      {:reject, _} = NsfwApiPolicy.filter(object)
+    end
+
+    test "rejects NSFW when :reject is enabled", %{nsfw_object: object} do
+      clear_config([@policy, :reject], true)
+      {:reject, _} = NsfwApiPolicy.filter(object)
+    end
+
+    test "passes NSFW through when :reject is disabled", %{nsfw_object: object} do
+      clear_config([@policy, :reject], false)
+      {:ok, _} = NsfwApiPolicy.filter(object)
+    end
+
+    test "unlists NSFW when :unlist is enabled", %{user: user, nsfw_object: object} do
+      clear_config([@policy, :unlist], true)
+      {:ok, object} = NsfwApiPolicy.filter(object)
+      assert object["to"] == [user.follower_address]
+    end
+
+    test "passes NSFW through when :unlist is disabled", %{nsfw_object: object} do
+      clear_config([@policy, :unlist], false)
+      {:ok, object} = NsfwApiPolicy.filter(object)
+      assert object["to"] == [Constants.as_public()]
+    end
+  end
+end