1 files changed, 51 insertions, 0 deletions
diff --git a/lib/pleroma/captcha/captcha.ex b/lib/pleroma/captcha/captcha.ex
new file mode 100644
index 000000000..df33406ee
--- /dev/null
+++ b/lib/pleroma/captcha/captcha.ex
@@ -0,0 +1,51 @@
+defmodule Pleroma.Captcha do
+  use GenServer
+
+  @ets_options [:ordered_set, :private, :named_table, {:read_concurrency, true}]
+
+  @doc false
+  def start_link() do
+    GenServer.start_link(__MODULE__, [], name: __MODULE__)
+  end
+
+  @doc false
+  def init(_) do
+    # Create a ETS table to store captchas
+    ets_name = Module.concat(method(), Ets)
+    ^ets_name = :ets.new(Module.concat(method(), Ets), @ets_options)
+
+    {:ok, nil}
+  end
+
+  @doc """
+  Ask the configured captcha service for a new captcha
+  """
+  def new() do
+    GenServer.call(__MODULE__, :new)
+  end
+
+  @doc """
+  Ask the configured captcha service to validate the captcha
+  """
+  def validate(token, captcha) do
+    GenServer.call(__MODULE__, {:validate, token, captcha})
+  end
+
+  @doc false
+  def handle_call(:new, _from, state) do
+    enabled = Pleroma.Config.get([__MODULE__, :enabled])
+
+    if !enabled do
+      {:reply, %{type: :none}, state}
+    else
+      {:reply, method().new(), state}
+    end
+  end
+
+  @doc false
+  def handle_call({:validate, token, captcha}, _from, state) do
+    {:reply, method().validate(token, captcha), state}
+  end
+
+  defp method, do: Pleroma.Config.get!([__MODULE__, :method])
+end