feat!: ignore passthrough_sender and passthrough_recipients to eliminate one more source of unencrypted messages

When running "cmdeploy run" operators will see a warning if their chatmail.ini contains these unused options.

chatmaild/src/chatmaild/config.py

@@ -41,8 +41,8 @@ class Config:
         self.username_min_length = int(params.get("username_min_length", 9))
         self.username_max_length = int(params.get("username_max_length", 9))
         self.password_min_length = int(params.get("password_min_length", 9))
-        self.passthrough_senders = params.get("passthrough_senders", "").split()
-        self.passthrough_recipients = params.get("passthrough_recipients", "").split()
+        _unused = ("passthrough_senders", "passthrough_recipients")
+        self.unused_keys = [k for k in _unused if params.get(k)]
         self.www_folder = params.get("www_folder", "")
         self.filtermail_smtp_port = int(params.get("filtermail_smtp_port", "10080"))
         self.filtermail_smtp_port_incoming = int(

chatmaild/src/chatmaild/ini/chatmail.ini.f

@@ -42,13 +42,6 @@ mail_domain = {mail_domain}
 # minimum length a password must have
 #password_min_length = 9
 
-# list of chatmail addresses which can send outbound un-encrypted mail
-#passthrough_senders =
-
-# list of e-mail recipients for which to accept outbound un-encrypted mails
-# (space-separated, item may start with "@" to whitelist whole recipient domains)
-#passthrough_recipients =
-
 # Use externally managed TLS certificates instead of built-in acmetool.
 # Paths refer to files on the deployment server (not the build machine).
 # Both files must already exist before running cmdeploy.

chatmaild/src/chatmaild/tests/test_config.py

@@ -45,8 +45,12 @@ def test_read_config_basic_using_defaults(tmp_path, maildomain):
     assert example_config.username_min_length == 9
     assert example_config.username_max_length == 9
     assert example_config.password_min_length == 9
-    assert example_config.passthrough_recipients == []
-    assert example_config.passthrough_senders == []
+    assert example_config.unused_keys == []
+
+
+def test_config_unused_keys(make_config):
+    config = make_config("chat.example.org", {"passthrough_senders": "x@y.org"})
+    assert config.unused_keys == ["passthrough_senders"]
 
 
 def test_config_userstate_paths(make_config, tmp_path):