7 files changed, 52 insertions, 3 deletions
diff --git a/changelog.d/3884.fix b/changelog.d/3884.fix
new file mode 100644
index 000000000..f8dbb2bbf
--- /dev/null
+++ b/changelog.d/3884.fix
@@ -0,0 +1 @@
+Allow non-HTTP(s) URIs in "url" fields for compatibility with "FEP-fffd: Proxy Objects"
+\ No newline at end of file
diff --git a/changelog.d/distro-docs-elixir-1.11.skip b/changelog.d/distro-docs-elixir-1.11.skip
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/changelog.d/distro-docs-elixir-1.11.skip
diff --git a/docs/installation/debian_based_en.md b/docs/installation/debian_based_en.md
index 4e52b2155..575b8a7ab 100644
--- a/docs/installation/debian_based_en.md
+++ b/docs/installation/debian_based_en.md
@@ -4,7 +4,7 @@
 
 ## Installation
 
-This guide will assume you are on Debian 11 (“bullseye”) or later. This guide should also work with Ubuntu 18.04 (“Bionic Beaver”) and later. It also assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.digitalocean.com/community/tutorials/how-to-add-delete-and-grant-sudo-privileges-to-users-on-a-debian-vps). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su <username> -s $SHELL -c 'command'` instead.
+This guide will assume you are on Debian 12 (“bookworm”) or later. This guide should also work with Ubuntu 22.04 (“jammy”) and later. It also assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.digitalocean.com/community/tutorials/how-to-add-delete-and-grant-sudo-privileges-to-users-on-a-debian-vps). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su <username> -s $SHELL -c 'command'` instead.
 
 {! backend/installation/generic_dependencies.include !}
 
diff --git a/docs/installation/debian_based_jp.md b/docs/installation/debian_based_jp.md
index 3736e857f..695e7bb7d 100644
--- a/docs/installation/debian_based_jp.md
+++ b/docs/installation/debian_based_jp.md
@@ -5,7 +5,7 @@
 
 ## インストール
 
-このガイドはDebian Stretchを利用することを想定しています。Ubuntu 16.04や18.04でもおそらく動作します。また、ユーザはrootもしくはsudoにより管理者権限を持っていることを前提とします。もし、以下の操作をrootユーザで行う場合は、 `sudo` を無視してください。ただし、`sudo -Hu pleroma` のようにユーザを指定している場合には `su <username> -s $SHELL -c 'command'` を代わりに使ってください。
+このガイドはDebian Bookwormを利用することを想定しています。Ubuntu 22.04でもおそらく動作します。また、ユーザはrootもしくはsudoにより管理者権限を持っていることを前提とします。もし、以下の操作をrootユーザで行う場合は、 `sudo` を無視してください。ただし、`sudo -Hu pleroma` のようにユーザを指定している場合には `su <username> -s $SHELL -c 'command'` を代わりに使ってください。
 
 ### 必要なソフトウェア
 
diff --git a/lib/pleroma/ecto_type/activity_pub/object_validators/bare_uri.ex b/lib/pleroma/ecto_type/activity_pub/object_validators/bare_uri.ex
new file mode 100644
index 000000000..1038296e7
--- /dev/null
+++ b/lib/pleroma/ecto_type/activity_pub/object_validators/bare_uri.ex
@@ -0,0 +1,23 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.EctoType.ActivityPub.ObjectValidators.BareUri do
+  use Ecto.Type
+
+  def type, do: :string
+
+  def cast(uri) when is_binary(uri) do
+    case URI.parse(uri) do
+      %URI{scheme: nil} -> :error
+      %URI{} -> {:ok, uri}
+      _ -> :error
+    end
+  end
+
+  def cast(_), do: :error
+
+  def dump(data), do: {:ok, data}
+
+  def load(data), do: {:ok, data}
+end
diff --git a/lib/pleroma/web/activity_pub/object_validators/common_fields.ex b/lib/pleroma/web/activity_pub/object_validators/common_fields.ex
index 7b60c139a..d580208df 100644
--- a/lib/pleroma/web/activity_pub/object_validators/common_fields.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/common_fields.ex
@@ -58,7 +58,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonFields do
       field(:like_count, :integer, default: 0)
       field(:announcement_count, :integer, default: 0)
       field(:inReplyTo, ObjectValidators.ObjectID)
-      field(:url, ObjectValidators.Uri)
+      field(:url, ObjectValidators.BareUri)
 
       field(:likes, {:array, ObjectValidators.ObjectID}, default: [])
       field(:announcements, {:array, ObjectValidators.ObjectID}, default: [])
diff --git a/test/pleroma/ecto_type/activity_pub/object_validators/bare_uri_test.ex b/test/pleroma/ecto_type/activity_pub/object_validators/bare_uri_test.ex
new file mode 100644
index 000000000..226383c3c
--- /dev/null
+++ b/test/pleroma/ecto_type/activity_pub/object_validators/bare_uri_test.ex
@@ -0,0 +1,25 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.EctoType.ActivityPub.ObjectValidators.BareUriTest do
+  use Pleroma.DataCase, async: true
+
+  alias Pleroma.EctoType.ActivityPub.ObjectValidators.BareUri
+
+  test "diaspora://" do
+    text = "diaspora://alice@fediverse.example/post/deadbeefdeadbeefdeadbeefdeadbeef"
+    assert {:ok, text} = BareUri.cast(text)
+  end
+
+  test "nostr:" do
+    text = "nostr:note1gwdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef"
+    assert {:ok, text} = BareUri.cast(text)
+  end
+
+  test "errors for non-URIs" do
+    assert :error == SafeText.cast(1)
+    assert :error == SafeText.cast("foo")
+    assert :error == SafeText.cast("foo bar")
+  end
+end