EmojiPolicy: Implement delist

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tusooa 2023-02-28 11:47:53 -05:00
parent 80ce6482f6
commit 7eb8abf7bb
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2 changed files with 274 additions and 23 deletions

View File

@ -5,6 +5,8 @@
defmodule Pleroma.Web.ActivityPub.MRF.EmojiPolicy do
require Pleroma.Constants
alias Pleroma.Object.Updater
@moduledoc "Reject or force-unlisted emojis with certain URLs or names"
@behaviour Pleroma.Web.ActivityPub.MRF.Policy
@ -17,12 +19,31 @@ defp config_remove_shortcode do
Pleroma.Config.get([:mrf_emoji, :remove_shortcode], [])
end
defp config_unlist_url do
Pleroma.Config.get([:mrf_emoji, :federated_timeline_removal_url], [])
end
defp config_unlist_shortcode do
Pleroma.Config.get([:mrf_emoji, :federated_timeline_removal_shortcode], [])
end
@impl Pleroma.Web.ActivityPub.MRF.Policy
def history_awareness, do: :manual
@impl Pleroma.Web.ActivityPub.MRF.Policy
def filter(%{"type" => type, "object" => %{} = object} = message)
when type in ["Create", "Update"] do
with object <- process_remove(object, :url, config_remove_url()),
object <- process_remove(object, :shortcode, config_remove_shortcode()) do
{:ok, Map.put(message, "object", object)}
with {:ok, object} <-
Updater.do_with_history(object, fn object ->
{:ok, process_remove(object, :url, config_remove_url())}
end),
{:ok, object} <-
Updater.do_with_history(object, fn object ->
{:ok, process_remove(object, :shortcode, config_remove_shortcode())}
end),
activity <- Map.put(message, "object", object),
activity <- maybe_delist(activity) do
{:ok, activity}
end
end
@ -51,28 +72,22 @@ defp match_any?(string, patterns) do
Enum.any?(patterns, &match_string?(string, &1))
end
defp url_from_tag(%{"icon" => %{"url" => url}}), do: url
defp url_from_tag(_), do: nil
defp url_from_emoji({_name, url}), do: url
defp shortcode_from_tag(%{"name" => name}) when is_binary(name), do: String.trim(name, ":")
defp shortcode_from_tag(_), do: nil
defp shortcode_from_emoji({name, _url}), do: name
defp process_remove(object, :url, patterns) do
process_remove_impl(
object,
fn
%{"icon" => %{"url" => url}} -> url
_ -> nil
end,
fn {_name, url} -> url end,
patterns
)
process_remove_impl(object, &url_from_tag/1, &url_from_emoji/1, patterns)
end
defp process_remove(object, :shortcode, patterns) do
process_remove_impl(
object,
fn
%{"name" => name} when is_binary(name) -> String.trim(name, ":")
_ -> nil
end,
fn {name, _url} -> name end,
patterns
)
process_remove_impl(object, &shortcode_from_tag/1, &shortcode_from_emoji/1, patterns)
end
defp process_remove_impl(object, extract_from_tag, extract_from_emoji, patterns) do
@ -118,6 +133,66 @@ defp process_remove_impl(object, extract_from_tag, extract_from_emoji, patterns)
end
end
defp maybe_delist(%{"object" => object, "to" => to, "type" => "Create"} = activity) do
check = fn object ->
if any_emoji_match?(object, &url_from_tag/1, &url_from_emoji/1, config_unlist_url()) or
any_emoji_match?(
object,
&shortcode_from_tag/1,
&shortcode_from_emoji/1,
config_unlist_shortcode()
) do
{:should_delist, nil}
else
{:ok, %{}}
end
end
should_delist? = fn object ->
with {:ok, _} <- Pleroma.Object.Updater.do_with_history(object, check) do
false
else
_ -> true
end
end
if Pleroma.Constants.as_public() in to and should_delist?.(object) do
to = List.delete(to, Pleroma.Constants.as_public())
cc = [Pleroma.Constants.as_public() | activity["cc"] || []]
activity
|> Map.put("to", to)
|> Map.put("cc", cc)
else
activity
end
end
defp maybe_delist(activity), do: activity
defp any_emoji_match?(object, extract_from_tag, extract_from_emoji, patterns) do
Kernel.||(
Enum.any?(
object["tag"],
fn
%{"type" => "Emoji"} = tag ->
str = extract_from_tag.(tag)
if is_binary(str) do
match_any?(str, patterns)
else
false
end
_ ->
false
end
),
object["emoji"]
|> Enum.any?(fn emoji -> match_any?(extract_from_emoji.(emoji), patterns) end)
)
end
@impl Pleroma.Web.ActivityPub.MRF.Policy
def describe do
# This horror is needed to convert regex sigils to strings

View File

@ -5,6 +5,8 @@
defmodule Pleroma.Web.ActivityPub.MRF.EmojiPolicyTest do
use Pleroma.DataCase
require Pleroma.Constants
alias Pleroma.Web.ActivityPub.MRF
alias Pleroma.Web.ActivityPub.MRF.EmojiPolicy
@ -84,8 +86,27 @@ defmodule Pleroma.Web.ActivityPub.MRF.EmojiPolicyTest do
"nekomimi_girl_emoji_007" =>
"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png",
"test" => "https://example.org/test.png"
}
}
},
"to" => ["https://example.org/self", Pleroma.Constants.as_public()],
"cc" => ["https://example.org/someone"]
},
"to" => ["https://example.org/self", Pleroma.Constants.as_public()],
"cc" => ["https://example.org/someone"]
}
@status_data_with_history %{
"type" => "Create",
"object" =>
@status_data["object"]
|> Map.merge(%{
"formerRepresentations" => %{
"type" => "OrderedCollection",
"orderedItems" => [@status_data["object"] |> Map.put("content", "older")],
"totalItems" => 1
}
}),
"to" => ["https://example.org/self", Pleroma.Constants.as_public()],
"cc" => ["https://example.org/someone"]
}
describe "remove_url" do
@ -119,6 +140,49 @@ test "processes status" do
assert %{"object" => %{"tag" => ^expected_tags, "emoji" => ^expected_emoji}} = filtered
end
test "processes status with history" do
{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data_with_history)
expected_tags = [@emoji_tags |> Enum.at(2)] ++ @misc_tags
expected_emoji = %{
"nekomimi_girl_emoji_007" =>
"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
}
assert %{
"object" => %{
"tag" => ^expected_tags,
"emoji" => ^expected_emoji,
"formerRepresentations" => %{"orderedItems" => [item]}
}
} = filtered
assert %{"tag" => ^expected_tags, "emoji" => ^expected_emoji} = item
end
test "processes updates" do
{:ok, filtered} =
MRF.filter_one(EmojiPolicy, @status_data_with_history |> Map.put("type", "Update"))
expected_tags = [@emoji_tags |> Enum.at(2)] ++ @misc_tags
expected_emoji = %{
"nekomimi_girl_emoji_007" =>
"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
}
assert %{
"object" => %{
"tag" => ^expected_tags,
"emoji" => ^expected_emoji,
"formerRepresentations" => %{"orderedItems" => [item]}
}
} = filtered
assert %{"tag" => ^expected_tags, "emoji" => ^expected_emoji} = item
end
end
describe "remove_shortcode" do
@ -152,5 +216,117 @@ test "processes status" do
assert %{"object" => %{"tag" => ^expected_tags, "emoji" => ^expected_emoji}} = filtered
end
test "processes status with history" do
{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data_with_history)
expected_tags = [@emoji_tags |> Enum.at(2)] ++ @misc_tags
expected_emoji = %{
"nekomimi_girl_emoji_007" =>
"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
}
assert %{
"object" => %{
"tag" => ^expected_tags,
"emoji" => ^expected_emoji,
"formerRepresentations" => %{"orderedItems" => [item]}
}
} = filtered
assert %{"tag" => ^expected_tags, "emoji" => ^expected_emoji} = item
end
test "processes updates" do
{:ok, filtered} =
MRF.filter_one(EmojiPolicy, @status_data_with_history |> Map.put("type", "Update"))
expected_tags = [@emoji_tags |> Enum.at(2)] ++ @misc_tags
expected_emoji = %{
"nekomimi_girl_emoji_007" =>
"https://example.org/emoji/nekomimi_girl_emoji/nekomimi_girl_emoji_007.png"
}
assert %{
"object" => %{
"tag" => ^expected_tags,
"emoji" => ^expected_emoji,
"formerRepresentations" => %{"orderedItems" => [item]}
}
} = filtered
assert %{"tag" => ^expected_tags, "emoji" => ^expected_emoji} = item
end
end
describe "federated_timeline_removal_url" do
setup do
clear_config([:mrf_emoji, :federated_timeline_removal_url], [
"https://example.org/test.png",
~r{/biribiri/mikoto_smile[23]\.png},
"nekomimi_girl_emoji"
])
:ok
end
test "processes status" do
{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data)
expected_tags = @status_data["object"]["tag"]
expected_emoji = @status_data["object"]["emoji"]
expected_to = ["https://example.org/self"]
expected_cc = [Pleroma.Constants.as_public(), "https://example.org/someone"]
assert %{
"to" => ^expected_to,
"cc" => ^expected_cc,
"object" => %{"tag" => ^expected_tags, "emoji" => ^expected_emoji}
} = filtered
end
test "ignore updates" do
{:ok, filtered} = MRF.filter_one(EmojiPolicy, @status_data |> Map.put("type", "Update"))
expected_tags = @status_data["object"]["tag"]
expected_emoji = @status_data["object"]["emoji"]
expected_to = ["https://example.org/self", Pleroma.Constants.as_public()]
expected_cc = ["https://example.org/someone"]
assert %{
"to" => ^expected_to,
"cc" => ^expected_cc,
"object" => %{"tag" => ^expected_tags, "emoji" => ^expected_emoji}
} = filtered
end
test "processes status with history" do
status =
@status_data_with_history
|> put_in(["object", "tag"], @misc_tags)
|> put_in(["object", "emoji"], %{})
{:ok, filtered} = MRF.filter_one(EmojiPolicy, status)
expected_tags = @status_data["object"]["tag"]
expected_emoji = @status_data["object"]["emoji"]
expected_to = ["https://example.org/self"]
expected_cc = [Pleroma.Constants.as_public(), "https://example.org/someone"]
assert %{
"to" => ^expected_to,
"cc" => ^expected_cc,
"object" => %{
"formerRepresentations" => %{
"orderedItems" => [%{"tag" => ^expected_tags, "emoji" => ^expected_emoji}]
}
}
} = filtered
end
end
end