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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicyTest do
+ use Pleroma.DataCase
+
+ alias Pleroma.Web.ActivityPub.MRF.KeywordPolicy
+
+ setup do: clear_config(:mrf_keyword)
+
+ setup do
+ Pleroma.Config.put([:mrf_keyword], %{reject: [], federated_timeline_removal: [], replace: []})
+ end
+
+ describe "rejecting based on keywords" do
+ test "rejects if string matches in content" do
+ Pleroma.Config.put([:mrf_keyword, :reject], ["pun"])
+
+ message = %{
+ "type" => "Create",
+ "object" => %{
+ "content" => "just a daily reminder that compLAINer is a good pun",
+ "summary" => ""
+ }
+ }
+
+ assert {:reject, "[KeywordPolicy] Matches with rejected keyword"} =
+ KeywordPolicy.filter(message)
+ end
+
+ test "rejects if string matches in summary" do
+ Pleroma.Config.put([:mrf_keyword, :reject], ["pun"])
+
+ message = %{
+ "type" => "Create",
+ "object" => %{
+ "summary" => "just a daily reminder that compLAINer is a good pun",
+ "content" => ""
+ }
+ }
+
+ assert {:reject, "[KeywordPolicy] Matches with rejected keyword"} =
+ KeywordPolicy.filter(message)
+ end
+
+ test "rejects if regex matches in content" do
+ Pleroma.Config.put([:mrf_keyword, :reject], [~r/comp[lL][aA][iI][nN]er/])
+
+ assert true ==
+ Enum.all?(["complainer", "compLainer", "compLAiNer", "compLAINer"], fn content ->
+ message = %{
+ "type" => "Create",
+ "object" => %{
+ "content" => "just a daily reminder that #{content} is a good pun",
+ "summary" => ""
+ }
+ }
+
+ {:reject, "[KeywordPolicy] Matches with rejected keyword"} ==
+ KeywordPolicy.filter(message)
+ end)
+ end
+
+ test "rejects if regex matches in summary" do
+ Pleroma.Config.put([:mrf_keyword, :reject], [~r/comp[lL][aA][iI][nN]er/])
+
+ assert true ==
+ Enum.all?(["complainer", "compLainer", "compLAiNer", "compLAINer"], fn content ->
+ message = %{
+ "type" => "Create",
+ "object" => %{
+ "summary" => "just a daily reminder that #{content} is a good pun",
+ "content" => ""
+ }
+ }
+
+ {:reject, "[KeywordPolicy] Matches with rejected keyword"} ==
+ KeywordPolicy.filter(message)
+ end)
+ end
+ end
+
+ describe "delisting from ftl based on keywords" do
+ test "delists if string matches in content" do
+ Pleroma.Config.put([:mrf_keyword, :federated_timeline_removal], ["pun"])
+
+ message = %{
+ "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "type" => "Create",
+ "object" => %{
+ "content" => "just a daily reminder that compLAINer is a good pun",
+ "summary" => ""
+ }
+ }
+
+ {:ok, result} = KeywordPolicy.filter(message)
+ assert ["https://www.w3.org/ns/activitystreams#Public"] == result["cc"]
+ refute ["https://www.w3.org/ns/activitystreams#Public"] == result["to"]
+ end
+
+ test "delists if string matches in summary" do
+ Pleroma.Config.put([:mrf_keyword, :federated_timeline_removal], ["pun"])
+
+ message = %{
+ "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "type" => "Create",
+ "object" => %{
+ "summary" => "just a daily reminder that compLAINer is a good pun",
+ "content" => ""
+ }
+ }
+
+ {:ok, result} = KeywordPolicy.filter(message)
+ assert ["https://www.w3.org/ns/activitystreams#Public"] == result["cc"]
+ refute ["https://www.w3.org/ns/activitystreams#Public"] == result["to"]
+ end
+
+ test "delists if regex matches in content" do
+ Pleroma.Config.put([:mrf_keyword, :federated_timeline_removal], [~r/comp[lL][aA][iI][nN]er/])
+
+ assert true ==
+ Enum.all?(["complainer", "compLainer", "compLAiNer", "compLAINer"], fn content ->
+ message = %{
+ "type" => "Create",
+ "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "object" => %{
+ "content" => "just a daily reminder that #{content} is a good pun",
+ "summary" => ""
+ }
+ }
+
+ {:ok, result} = KeywordPolicy.filter(message)
+
+ ["https://www.w3.org/ns/activitystreams#Public"] == result["cc"] and
+ not (["https://www.w3.org/ns/activitystreams#Public"] == result["to"])
+ end)
+ end
+
+ test "delists if regex matches in summary" do
+ Pleroma.Config.put([:mrf_keyword, :federated_timeline_removal], [~r/comp[lL][aA][iI][nN]er/])
+
+ assert true ==
+ Enum.all?(["complainer", "compLainer", "compLAiNer", "compLAINer"], fn content ->
+ message = %{
+ "type" => "Create",
+ "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "object" => %{
+ "summary" => "just a daily reminder that #{content} is a good pun",
+ "content" => ""
+ }
+ }
+
+ {:ok, result} = KeywordPolicy.filter(message)
+
+ ["https://www.w3.org/ns/activitystreams#Public"] == result["cc"] and
+ not (["https://www.w3.org/ns/activitystreams#Public"] == result["to"])
+ end)
+ end
+ end
+
+ describe "replacing keywords" do
+ test "replaces keyword if string matches in content" do
+ Pleroma.Config.put([:mrf_keyword, :replace], [{"opensource", "free software"}])
+
+ message = %{
+ "type" => "Create",
+ "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "object" => %{"content" => "ZFS is opensource", "summary" => ""}
+ }
+
+ {:ok, %{"object" => %{"content" => result}}} = KeywordPolicy.filter(message)
+ assert result == "ZFS is free software"
+ end
+
+ test "replaces keyword if string matches in summary" do
+ Pleroma.Config.put([:mrf_keyword, :replace], [{"opensource", "free software"}])
+
+ message = %{
+ "type" => "Create",
+ "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "object" => %{"summary" => "ZFS is opensource", "content" => ""}
+ }
+
+ {:ok, %{"object" => %{"summary" => result}}} = KeywordPolicy.filter(message)
+ assert result == "ZFS is free software"
+ end
+
+ test "replaces keyword if regex matches in content" do
+ Pleroma.Config.put([:mrf_keyword, :replace], [
+ {~r/open(-|\s)?source\s?(software)?/, "free software"}
+ ])
+
+ assert true ==
+ Enum.all?(["opensource", "open-source", "open source"], fn content ->
+ message = %{
+ "type" => "Create",
+ "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "object" => %{"content" => "ZFS is #{content}", "summary" => ""}
+ }
+
+ {:ok, %{"object" => %{"content" => result}}} = KeywordPolicy.filter(message)
+ result == "ZFS is free software"
+ end)
+ end
+
+ test "replaces keyword if regex matches in summary" do
+ Pleroma.Config.put([:mrf_keyword, :replace], [
+ {~r/open(-|\s)?source\s?(software)?/, "free software"}
+ ])
+
+ assert true ==
+ Enum.all?(["opensource", "open-source", "open source"], fn content ->
+ message = %{
+ "type" => "Create",
+ "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "object" => %{"summary" => "ZFS is #{content}", "content" => ""}
+ }
+
+ {:ok, %{"object" => %{"summary" => result}}} = KeywordPolicy.filter(message)
+ result == "ZFS is free software"
+ end)
+ end
+ end
+end