Commit 46aa8c18 authored by rinpatch's avatar rinpatch

Add keyword policy

parent 25a659d2
Pipeline #7254 failed with stages
in 6 minutes and 7 seconds
...@@ -151,6 +151,11 @@ This section is used to configure Pleroma-FE, unless ``:managed_config`` in ``:i ...@@ -151,6 +151,11 @@ This section is used to configure Pleroma-FE, unless ``:managed_config`` in ``:i
* `delist_threshold`: Number of mentioned users after which the message gets delisted (the message can still be seen, but it will not show up in public timelines and mentioned users won't get notifications about it). Set to 0 to disable. * `delist_threshold`: Number of mentioned users after which the message gets delisted (the message can still be seen, but it will not show up in public timelines and mentioned users won't get notifications about it). Set to 0 to disable.
* `reject_threshold`: Number of mentioned users after which the messaged gets rejected. Set to 0 to disable. * `reject_threshold`: Number of mentioned users after which the messaged gets rejected. Set to 0 to disable.
## :mrf_keyword
* `reject`: A list of patterns which result in message being rejected, each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html)
* `ftl_removal`: A list of patterns which result in message being removed from federated timelines(a.k.a unlisted), each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html)
* `replace`: A list of tuples containing `{pattern, replacement`, `pattern` can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html)
## :media_proxy ## :media_proxy
* `enabled`: Enables proxying of remote media to the instance’s proxy * `enabled`: Enables proxying of remote media to the instance’s proxy
* `base_url`: The base URL to access a user-uploaded file. Useful when you want to proxy the media files via another host/CDN fronts. * `base_url`: The base URL to access a user-uploaded file. Useful when you want to proxy the media files via another host/CDN fronts.
......
# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do
@behaviour Pleroma.Web.ActivityPub.MRF
defp string_matches?(string, pattern) when is_binary(pattern) do
String.contains?(string, pattern)
end
defp string_matches?(string, pattern) do
String.match?(string, pattern)
end
defp check_reject(%{"object" => %{"content" => content}} = message) do
if Enum.any?(Pleroma.Config.get([:mrf_keyword, :reject]), fn pattern ->
string_matches?(content, pattern)
end) do
{:reject, nil}
else
{:ok, message}
end
end
defp check_ftl_removal(%{"to" => to, "object" => %{"content" => content}} = message) do
if "https://www.w3.org/ns/activitystreams#Public" in to and
Enum.any?(Pleroma.Config.get([:mrf_keyword, :ftl_removal]), fn pattern ->
string_matches?(content, pattern)
end) do
to = List.delete(to, "https://www.w3.org/ns/activitystreams#Public")
cc = ["https://www.w3.org/ns/activitystreams#Public" | [message["cc"] || []]]
message =
message
|> Map.put("to", to)
|> Map.put("cc", cc)
IO.inspect(message)
{:ok, message}
else
{:ok, message}
end
end
defp check_replace(%{"object" => %{"content" => content}} = message) do
content =
Enum.reduce(Pleroma.Config.get([:mrf_keyword, :replace]), content, fn {pattern, replacement},
acc ->
String.replace(acc, pattern, replacement)
end)
{:ok, put_in(message["object"]["content"], content)}
end
@impl true
def filter(%{"object" => %{"content" => nil}} = message) do
{:ok, message}
end
@impl true
def filter(%{"type" => "Create", "object" => %{"content" => _content}} = message) do
with {:ok, message} <- check_reject(message),
{:ok, message} <- check_ftl_removal(message),
{:ok, message} <- check_replace(message) do
{:ok, message}
else
_e ->
{:reject, nil}
end
end
@impl true
def filter(message), do: {:ok, message}
end
...@@ -44,6 +44,33 @@ defmodule Pleroma.Web.Nodeinfo.NodeinfoController do ...@@ -44,6 +44,33 @@ defmodule Pleroma.Web.Nodeinfo.NodeinfoController do
Application.get_env(:pleroma, :mrf_simple) Application.get_env(:pleroma, :mrf_simple)
|> Enum.into(%{}) |> Enum.into(%{})
# This horror is needed to convert regex sigils to strings
mrf_keyword =
Application.get_env(:pleroma, :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_policies =
MRF.get_policies() MRF.get_policies()
|> Enum.map(fn policy -> to_string(policy) |> String.split(".") |> List.last() end) |> Enum.map(fn policy -> to_string(policy) |> String.split(".") |> List.last() end)
...@@ -73,6 +100,7 @@ defmodule Pleroma.Web.Nodeinfo.NodeinfoController do ...@@ -73,6 +100,7 @@ defmodule Pleroma.Web.Nodeinfo.NodeinfoController do
%{ %{
mrf_policies: mrf_policies, mrf_policies: mrf_policies,
mrf_simple: mrf_simple, mrf_simple: mrf_simple,
mrf_keyword: mrf_keyword,
mrf_user_allowlist: mrf_user_allowlist, mrf_user_allowlist: mrf_user_allowlist,
quarantined_instances: quarantined quarantined_instances: quarantined
} }
......
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