Implement a bare minimum of advanced filtering

- Forward messages without encryption.

- Include a simple test setup in the Makefile.

- Add a test to send a test message to the daemon.

Makefile

@@ -1,5 +1,5 @@
 .POSIX:
-.PHONY: test e2etest unittest crontest pre-clean clean restore-keyhome
+.PHONY: test e2etest unittest crontest daemontest pre-clean clean restore-keyhome
 
 #
 # On systems where Python 3.x binary has a different name, just
@@ -17,7 +17,7 @@ TEST_DB = test/lacre.db
 #
 # Main goal to run tests.
 #
-test: e2etest unittest crontest
+test: e2etest unittest crontest daemontest
 
 #
 # Run a set of end-to-end tests.
@@ -42,6 +42,14 @@ crontest: clean-db $(TEST_DB)
 $(TEST_DB):
 	$(PYTHON) test/schema.py $(TEST_DB)
 
+#
+# Run an e2e test of Advanced Content Filter.
+#
+daemontest:
+	$(PYTHON) test/relay.py 2500
+	PYTHONPATH=`pwd` $(PYTHON) -m lacre.daemon
+	$(PYTHON) test/sendmail.py
+
 # Before running the crontest goal we need to make sure that the
 # database gets regenerated.
 clean-db:

lacre/daemon.py

@@ -5,6 +5,7 @@ import lacre
 import lacre.config as conf
 import sys
 from aiosmtpd.controller import Controller
+import asyncio
 
 # Mail status constants.
 #
@@ -30,8 +31,9 @@ class MailEncryptionProxy:
         # for now, just return an error because we're not ready to handle mail
 
         for recipient, operation in gate.delivery_plan(envelope.rcpt_tos):
-            new_message = operation.perform(envelope.body)
-            gate.send_msg(new_message, [recipient])
+            LOG.debug(f"Sending mail to {recipient} via {operation}")
+            new_message = operation.perform(envelope.content)
+            gate.send_msg(new_message, [recipient], envelope.mail_from)
 
         return RESULT_NOT_IMPLEMENTED
 
@@ -39,6 +41,7 @@ class MailEncryptionProxy:
 def _init_controller():
     proxy = MailEncryptionProxy()
     host, port = conf.daemon_params()
+    LOG.info(f"Initialising a mail Controller at {host}:{port}")
     return Controller(proxy, hostname=host, port=port)
 
 
@@ -50,19 +53,32 @@ def _validate_config():
         sys.exit(lacre.EX_CONFIG)
 
 
+async def _sleep():
+    while True:
+        await asyncio.sleep(5)
+
+
 def _main():
     _validate_config()
 
     controller = _init_controller()
 
+    LOG.info("Starting the daemon...")
     # starts the controller in a new thread
     controller.start()
 
     # _this_ thread now continues operation, so it may be used to control key
     # and certificate cache
 
+    try:
+        asyncio.run(_sleep())
+    except KeyboardInterrupt:
+        LOG.info("Finishing...")
+
     controller.stop()
 
+    LOG.info("Done")
+
 
 if __name__ == '__main__':
     _main()

lacre/mailgate.py

@@ -376,10 +376,13 @@ def _get_first_payload(payloads):
         return payloads
 
 
-def send_msg(message, recipients):
+def send_msg(message, recipients, fromaddr=None):
     """Send MESSAGE to RECIPIENTS to the mail relay."""
     global from_addr
 
+    if fromaddr is not None:
+        from_addr = fromaddr
+
     recipients = [_f for _f in recipients if _f]
     if recipients:
         LOG.info(f"Sending email to: {recipients!r}")

test/sendmail.py

@@ -0,0 +1,22 @@
+import smtplib
+
+
+def _send(host, port, from_addr, recipients, message):
+    smtp = smtplib.SMTP(host, port)
+    # smtp.starttls()
+    # try:
+    # breakpoint()
+    smtp.sendmail(from_addr, recipients, message)
+    # except smtplib.SMTPDataError as e:
+    #     print(f"Couldn't deliver message.\nGot error: {e}\n")
+
+
+message = """\
+From: dave@disposlab
+To: alice@disposlab
+Subject: Test message
+
+Lorem ipsum dolor sit amet.
+"""
+
+_send('localhost', 10025, 'dave@disposlab', ['alice@disposlab'], message)