From 11f9f2ef277937d5558a1cc0a92a60b872f17de0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?H=C3=A9l=C3=A8ne?= Date: Tue, 28 Jun 2022 20:33:50 +0200 Subject: [PATCH 1/2] EmojiReactValidator: fix emoji qualification Tries fully-qualifying emoji when receiving them, by adding the emoji variation sequence to the received reaction emoji. This issue arises when other instance software, such as Misskey, tries reacting with emoji that have unqualified or minimally qualified variants, like a red heart. Pleroma only accepts fully qualified emoji in emoji reactions, and refused those emoji. Now, Pleroma will attempt to properly qualify them first, and reject them if checks still fail. --- .../emoji_react_validator.ex | 15 ++++++++++ test/fixtures/emoji-reaction-unqualified.json | 30 +++++++++++++++++++ .../emoji_react_handling_test.exs | 26 ++++++++++++++++ 3 files changed, 71 insertions(+) create mode 100644 test/fixtures/emoji-reaction-unqualified.json diff --git a/lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex b/lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex index ed072b888..bf5166633 100644 --- a/lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex +++ b/lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex @@ -49,6 +49,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do defp fix(data) do data = data + |> fix_emoji_qualification() |> CommonFixes.fix_actor() |> CommonFixes.fix_activity_addressing() @@ -61,6 +62,20 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do end end + defp fix_emoji_qualification(%{"content" => emoji} = data) do + # Emoji variation sequence + new_emoji = emoji <> "\uFE0F" + + if Pleroma.Emoji.is_unicode_emoji?(new_emoji) do + data + |> Map.put("content", new_emoji) + else + data + end + end + + defp fix_emoji_qualification(data), do: data + defp validate_emoji(cng) do content = get_field(cng, :content) diff --git a/test/fixtures/emoji-reaction-unqualified.json b/test/fixtures/emoji-reaction-unqualified.json new file mode 100644 index 000000000..722fd7092 --- /dev/null +++ b/test/fixtures/emoji-reaction-unqualified.json @@ -0,0 +1,30 @@ +{ + "type": "EmojiReact", + "signature": { + "type": "RsaSignature2017", + "signatureValue": "fdxMfQSMwbC6wP6sh6neS/vM5879K67yQkHTbiT5Npr5wAac0y6+o3Ij+41tN3rL6wfuGTosSBTHOtta6R4GCOOhCaCSLMZKypnp1VltCzLDoyrZELnYQIC8gpUXVmIycZbREk22qWUe/w7DAFaKK4UscBlHDzeDVcA0K3Se5Sluqi9/Zh+ldAnEzj/rSEPDjrtvf5wGNf3fHxbKSRKFt90JvKK6hS+vxKUhlRFDf6/SMETw+EhwJSNW4d10yMUakqUWsFv4Acq5LW7l+HpYMvlYY1FZhNde1+uonnCyuQDyvzkff8zwtEJmAXC4RivO/VVLa17SmqheJZfI8oluVg==", + "creator": "http://mastodon.example.org/users/admin#main-key", + "created": "2018-02-17T18:57:49Z" + }, + "object": "http://localtesting.pleroma.lol/objects/eb92579d-3417-42a8-8652-2492c2d4f454", + "content": "❤", + "nickname": "lain", + "id": "http://mastodon.example.org/users/admin#reactions/2", + "actor": "http://mastodon.example.org/users/admin", + "@context": [ + "https://www.w3.org/ns/activitystreams", + "https://w3id.org/security/v1", + { + "toot": "http://joinmastodon.org/ns#", + "sensitive": "as:sensitive", + "ostatus": "http://ostatus.org#", + "movedTo": "as:movedTo", + "manuallyApprovesFollowers": "as:manuallyApprovesFollowers", + "inReplyToAtomUri": "ostatus:inReplyToAtomUri", + "conversation": "ostatus:conversation", + "atomUri": "ostatus:atomUri", + "Hashtag": "as:Hashtag", + "Emoji": "toot:Emoji" + } + ] +} diff --git a/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs b/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs index ceedb185f..5edb6d56e 100644 --- a/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs +++ b/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs @@ -37,6 +37,32 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier.EmojiReactHandlingTest do assert match?([["👌", _]], object.data["reactions"]) end + test "it works for incoming unqualified emoji reactions" do + user = insert(:user) + other_user = insert(:user, local: false) + {:ok, activity} = CommonAPI.post(user, %{status: "hello"}) + + data = + File.read!("test/fixtures/emoji-reaction-unqualified.json") + |> Jason.decode!() + |> Map.put("object", activity.data["object"]) + |> Map.put("actor", other_user.ap_id) + + {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data) + + assert data["actor"] == other_user.ap_id + assert data["type"] == "EmojiReact" + assert data["id"] == "http://mastodon.example.org/users/admin#reactions/2" + assert data["object"] == activity.data["object"] + # heart emoji with added emoji variation sequence + assert data["content"] == "❤️" + + object = Object.get_by_ap_id(data["object"]) + + assert object.data["reaction_count"] == 1 + assert match?([["❤️", _]], object.data["reactions"]) + end + test "it reject invalid emoji reactions" do user = insert(:user) other_user = insert(:user, local: false) From 8c78fef56faff58b3ca291c2d25957b672f84bbe Mon Sep 17 00:00:00 2001 From: Haelwenn Date: Mon, 4 Jul 2022 00:25:54 +0000 Subject: [PATCH 2/2] EmojiReactValidator: apply lanodan's suggestions These changes make the encoding for the fully-qualified heart emoji very visible in editors. --- .../activity_pub/transmogrifier/emoji_react_handling_test.exs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs b/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs index 5edb6d56e..41d96fa66 100644 --- a/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs +++ b/test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs @@ -55,12 +55,12 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier.EmojiReactHandlingTest do assert data["id"] == "http://mastodon.example.org/users/admin#reactions/2" assert data["object"] == activity.data["object"] # heart emoji with added emoji variation sequence - assert data["content"] == "❤️" + assert data["content"] == "❤\uFE0F" object = Object.get_by_ap_id(data["object"]) assert object.data["reaction_count"] == 1 - assert match?([["❤️", _]], object.data["reactions"]) + assert match?([["❤\uFE0F", _]], object.data["reactions"]) end test "it reject invalid emoji reactions" do