From bf9d631fcaca072ae7adfdc77c78c1e4dfeffc5c Mon Sep 17 00:00:00 2001
From: Egor Kislitsyn <egor@kislitsyn.com>
Date: Wed, 11 Dec 2019 22:29:31 +0700
Subject: Add native captcha and enable it by default.

---
 lib/pleroma/captcha/native.ex | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 lib/pleroma/captcha/native.ex

(limited to 'lib')

diff --git a/lib/pleroma/captcha/native.ex b/lib/pleroma/captcha/native.ex
new file mode 100644
index 000000000..5306fe1aa
--- /dev/null
+++ b/lib/pleroma/captcha/native.ex
@@ -0,0 +1,35 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Captcha.Native do
+  import Pleroma.Web.Gettext
+  alias Pleroma.Captcha.Service
+  @behaviour Service
+
+  @impl Service
+  def new do
+    case Captcha.get() do
+      {:timeout} ->
+        %{error: dgettext("errors", "Captcha timeout")}
+
+      {:ok, answer_data, img_binary} ->
+        %{
+          type: :native,
+          token: token(),
+          url: "data:image/png;base64," <> Base.encode64(img_binary),
+          answer_data: answer_data
+        }
+    end
+  end
+
+  @impl Service
+  def validate(_token, captcha, captcha) when not is_nil(captcha), do: :ok
+  def validate(_token, _captcha, _answer), do: {:error, dgettext("errors", "Invalid CAPTCHA")}
+
+  defp token do
+    10
+    |> :crypto.strong_rand_bytes()
+    |> Base.url_encode64(padding: false)
+  end
+end
-- 
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