Websub controller beginnings.

lib/pleroma/web/websub/websub_controller.ex

@@ -0,0 +1,48 @@
+defmodule Pleroma.Web.Websub.WebsubController do
+  use Pleroma.Web, :controller
+  alias Pleroma.Web.Websub.WebsubServerSubscription
+  alias Pleroma.{Repo, User}
+  alias Pleroma.Web.OStatus
+  def websub_subscription_request(conn, %{"nickname" => nickname} = params) do
+    user = User.get_cached_by_nickname(nickname)
+
+    with {:ok, topic} <- valid_topic(params, user),
+         {:ok, lease_time} <- lease_time(params),
+         secret <- params["hub.secret"]
+    do
+      data = %{
+        state: "requested",
+        topic: topic,
+        secret: secret
+      }
+
+      change = Ecto.Changeset.change(%WebsubServerSubscription{}, data)
+      websub = Repo.insert!(change)
+
+      change = Ecto.Changeset.change(websub, %{valid_until: NaiveDateTime.add(websub.inserted_at, lease_time)})
+      websub = Repo.update!(change)
+
+      conn
+      |> send_resp(202, "Accepted")
+    else {:error, reason} ->
+      conn
+      |> send_resp(500, reason)
+    end
+  end
+
+  defp lease_time(%{"hub.lease_seconds" => lease_seconds}) do
+    {:ok, lease_seconds}
+  end
+
+  defp lease_time(_) do
+    {:ok, 60 * 60 * 24 * 3} # three days
+  end
+
+  defp valid_topic(%{"hub.topic" => topic}, user) do
+    if topic == OStatus.feed_path(user) do
+      {:ok, topic}
+    else
+      {:error, "Wrong topic requested, expected #{OStatus.feed_path(user)}, got #{topic}"}
+    end
+  end
+end