MRF: add describe() for gathering and describing the MRF configuration

[akkoma] / lib / pleroma / web / activity_pub / mrf.ex

diff --git a/lib/pleroma/web/activity_pub/mrf.ex b/lib/pleroma/web/activity_pub/mrf.ex
index 10ceef715faed9abfef0d9009d14d0138800927e..d43a8760b9246afbd6ce2de62c9a4136e80b0249 100644 (file)
--- a/lib/pleroma/web/activity_pub/mrf.ex
+++ b/lib/pleroma/web/activity_pub/mrf.ex
@@ -25,4 +25,30 @@ defmodule Pleroma.Web.ActivityPub.MRF do
   defp get_policies(policy) when is_atom(policy), do: [policy]
   defp get_policies(policies) when is_list(policies), do: policies
   defp get_policies(_), do: []
+
+  @spec subdomains_regex([String.t()]) :: [Regex.t()]
+  def subdomains_regex(domains) when is_list(domains) do
+    for domain <- domains, do: ~r(^#{String.replace(domain, "*.", "(.*\\.)*")}$)i
+  end
+
+  @spec subdomain_match?([Regex.t()], String.t()) :: boolean()
+  def subdomain_match?(domains, host) do
+    Enum.any?(domains, fn domain -> Regex.match?(domain, host) end)
+  end
+
+  @callback describe() :: {:ok | :error, Map.t()}
+
+  def describe(policies) do
+    policies
+    |> Enum.reduce({:ok, %{}}, fn
+      policy, {:ok, data} ->
+        {:ok, policy_data} = policy.describe()
+        {:ok, Map.merge(data, policy_data)}
+
+      _, error ->
+        error
+    end)
+  end
+
+  def describe(), do: get_policies() |> describe()
 end