convert Quoted Printable email subject and body to utf-8

core/mail/tests/v2/test_mails.py

@@ -105,6 +105,67 @@ class LMTPHandlerTestCase(TestCase):  # TODO replace with less hacky test
         self.assertEqual('pending_new', IssueThread.objects.all()[0].state)
         self.assertEqual(None, IssueThread.objects.all()[0].assigned_to)
 
+    def test_handle_quoted_printable(self):
+        from aiosmtpd.smtp import Envelope
+        from asgiref.sync import async_to_sync
+        import aiosmtplib
+        aiosmtplib.send = make_mocked_coro()
+        handler = LMTPHandler()
+        server = mock.Mock()
+        session = mock.Mock()
+        envelope = Envelope()
+        envelope.mail_from = 'test1@test'
+        envelope.rcpt_tos = ['test2@test']
+        envelope.content = b'Subject: test =?utf-8?Q?=C3=A4?=\nFrom: test3@test\nTo: test4@test\nMessage-ID: <1@test>\n\nText mit Quoted-Printable-Kodierung: =?utf-8?Q?=C3=A4=C3=B6=C3=BC=C3=9F?='
+        result = async_to_sync(handler.handle_DATA)(server, session, envelope)
+        self.assertEqual(result, '250 Message accepted for delivery')
+        self.assertEqual(len(Email.objects.all()), 2)
+        self.assertEqual(len(IssueThread.objects.all()), 1)
+        aiosmtplib.send.assert_called_once()
+        self.assertEqual('test ä', Email.objects.all()[0].subject)
+        self.assertEqual('Text mit Quoted-Printable-Kodierung: äöüß', Email.objects.all()[0].body)
+
+    def test_handle_quoted_printable_2(self):
+        #=?UTF-8?Q?suche_M=C3=BCtze?=
+        from aiosmtpd.smtp import Envelope
+        from asgiref.sync import async_to_sync
+        import aiosmtplib
+        aiosmtplib.send = make_mocked_coro()
+        handler = LMTPHandler()
+        server = mock.Mock()
+        session = mock.Mock()
+        envelope = Envelope()
+        envelope.mail_from = 'test1@test'
+        envelope.rcpt_tos = ['test2@test']
+        envelope.content = b'Subject: =?UTF-8?Q?suche_M=C3=BCtze?=\nFrom: test3@test\nTo: test4@test\nMessage-ID: <1@test>\n\nText mit Quoted-Printable-Kodierung: =?utf-8?Q?=C3=A4=C3=B6=C3=BC=C3=9F?='
+        result = async_to_sync(handler.handle_DATA)(server, session, envelope)
+        self.assertEqual(result, '250 Message accepted for delivery')
+        self.assertEqual(len(Email.objects.all()), 2)
+        self.assertEqual(len(IssueThread.objects.all()), 1)
+        aiosmtplib.send.assert_called_once()
+        self.assertEqual('suche_Mütze', Email.objects.all()[0].subject)
+        self.assertEqual('Text mit Quoted-Printable-Kodierung: äöüß', Email.objects.all()[0].body)
+
+    def test_handle_base64(self):
+        from aiosmtpd.smtp import Envelope
+        from asgiref.sync import async_to_sync
+        import aiosmtplib
+        aiosmtplib.send = make_mocked_coro()
+        handler = LMTPHandler()
+        server = mock.Mock()
+        session = mock.Mock()
+        envelope = Envelope()
+        envelope.mail_from = 'test1@test'
+        envelope.rcpt_tos = ['test2@test']
+        envelope.content = b'Subject: =?utf-8?B?dGVzdA==?=\nFrom: test3@test\nTo: test4@test\nMessage-ID: <1@test>\n\nText mit Base64-Kodierung: =?utf-8?B?w6TDtsO8w58=?='
+        result = async_to_sync(handler.handle_DATA)(server, session, envelope)
+        self.assertEqual(result, '250 Message accepted for delivery')
+        self.assertEqual(len(Email.objects.all()), 2)
+        self.assertEqual(len(IssueThread.objects.all()), 1)
+        aiosmtplib.send.assert_called_once()
+        self.assertEqual('test', Email.objects.all()[0].subject)
+        self.assertEqual('Text mit Base64-Kodierung: äöüß', Email.objects.all()[0].body)
+
     def test_handle_client_reply(self):
         issue_thread = IssueThread.objects.create(
             name="test",