home.paperless: add proftpd for paperless ingest

bundles/proftpd/metadata.py

@@ -0,0 +1,26 @@
+from bundlewrap.metadata import atomic
+
+defaults = {
+    'apt': {
+        'packages': {
+            'proftpd-core': {},
+        },
+    },
+}
+
+
+@metadata_reactor.provides(
+    'firewall/port_rules',
+)
+def firewall(metadata):
+    sources = atomic(metadata.get('mosquitto/restrict-to', set()))
+
+    return {
+        'firewall': {
+            'port_rules': {
+                '20/tcp': sources,
+                '21/tcp': sources,
+                '49152-50192/tcp': sources,
+            },
+        },
+    }