1 files changed, 78 insertions, 0 deletions
diff --git a/src/leap/mail/smtp/tests/test_smtprelay.py b/src/leap/mail/smtp/tests/test_smtprelay.py
new file mode 100644
index 0000000..eaa4d04
--- /dev/null
+++ b/src/leap/mail/smtp/tests/test_smtprelay.py
@@ -0,0 +1,78 @@
+from datetime import datetime
+import re
+from leap.email.smtp.smtprelay import (
+    SMTPFactory,
+    #SMTPDelivery, # an object
+    EncryptedMessage,
+)
+from leap.email.smtp import tests
+from twisted.test import proto_helpers
+from twisted.mail.smtp import User
+
+
+# some regexps
+IP_REGEX = "(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}" + \
+    "([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])"
+HOSTNAME_REGEX = "(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*" + \
+    "([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])"
+IP_OR_HOST_REGEX = '(' + IP_REGEX + '|' + HOSTNAME_REGEX + ')'
+
+
+class TestSmtpRelay(tests.OpenPGPTestCase):
+
+    EMAIL_DATA = ['HELO relay.leap.se',
+                  'MAIL FROM: <user@leap.se>',
+                  'RCPT TO: <leap@leap.se>',
+                  'DATA',
+                  'From: User <user@leap.se>',
+                  'To: Leap <leap@leap.se>',
+                  'Date: ' + datetime.now().strftime('%c'),
+                  'Subject: test message',
+                  '',
+                  'This is a secret message.',
+                  'Yours,',
+                  'A.',
+                  '',
+                  '.',
+                  'QUIT']
+
+    def assertMatch(self, string, pattern, msg=None):
+        if not re.match(pattern, string):
+            msg = self._formatMessage(msg, '"%s" does not match pattern "%s".'
+                                           % (string, pattern))
+            raise self.failureException(msg)
+
+    def test_relay_accepts_valid_email(self):
+        """
+        Test if SMTP server responds correctly for valid interaction.
+        """
+
+        SMTP_ANSWERS = ['220 ' + IP_OR_HOST_REGEX +
+                        ' NO UCE NO UBE NO RELAY PROBES',
+                        '250 ' + IP_OR_HOST_REGEX + ' Hello ' +
+                        IP_OR_HOST_REGEX + ', nice to meet you',
+                        '250 Sender address accepted',
+                        '250 Recipient address accepted',
+                        '354 Continue']
+        proto = SMTPFactory(None, self._gpg).buildProtocol(('127.0.0.1', 0))
+        transport = proto_helpers.StringTransport()
+        proto.makeConnection(transport)
+        for i, line in enumerate(self.EMAIL_DATA):
+            proto.lineReceived(line + '\r\n')
+            self.assertMatch(transport.value(),
+                             '\r\n'.join(SMTP_ANSWERS[0:i + 1]))
+        proto.setTimeout(None)
+
+    def test_message_encrypt(self):
+        """
+        Test if message gets encrypted to destination email.
+        """
+        proto = SMTPFactory(None, self._gpg).buildProtocol(('127.0.0.1', 0))
+        user = User('leap@leap.se', 'relay.leap.se', proto, 'leap@leap.se')
+        m = EncryptedMessage(user, None, self._gpg)
+        for line in self.EMAIL_DATA[4:12]:
+            m.lineReceived(line)
+        m.parseMessage()
+        m.encrypt()
+        decrypted = str(self._gpg.decrypt(m.cyphertext))
+        self.assertEqual('\n'.join(self.EMAIL_DATA[9:12]), decrypted)