2 files changed, 122 insertions, 1 deletions
diff --git a/src/leap/mx/mail_receiver.py b/src/leap/mx/mail_receiver.py
index b200772..c8113c1 100644
--- a/src/leap/mx/mail_receiver.py
+++ b/src/leap/mx/mail_receiver.py
@@ -203,6 +203,13 @@ class MailReceiver(Service):
             gpg.import_keys(pubkey)
             key = gpg.list_keys().pop()
 
+            if key['expires']:
+                expires = datetime.fromtimestamp(int(key['expires']))
+                if expires < datetime.now():
+                    log.msg("_encrypt_message: the key is expired (%s), "
+                            "can't encrypt" % (str(expires),))
+                    raise Exception("Expired key")
+
             encryption_result = gpg.encrypt(
                 json.dumps(data, ensure_ascii=False),
                 key["fingerprint"],
@@ -211,7 +218,8 @@ class MailReceiver(Service):
             if not encryption_result.ok:
                 log.msg("_encrypt_message: Encryption failed with status: %r"
                         % (encryption_result.status,))
-                return None
+                raise Exception("Encryption failed: %r"
+                                % (encryption_result.status,))
 
             doc.content = {
                 self.INCOMING_KEY: True,
diff --git a/src/leap/mx/tests/test_mail_receiver.py b/src/leap/mx/tests/test_mail_receiver.py
index 6b274cd..68f8d0b 100644
--- a/src/leap/mx/tests/test_mail_receiver.py
+++ b/src/leap/mx/tests/test_mail_receiver.py
@@ -78,6 +78,8 @@ class MailReceiverTestCase(unittest.TestCase):
     def test_single_mail(self):
         msg, path = self.addMail("foo bar")
         uuid, doc = yield self.defer_put_doc
+        self.assertTrue("PGP MESSAGE" in doc.content['_enc_json'],
+                        "It's not encrypted")
         self.assertEqual(uuid, UUID)
         decmsg = self.decryptDoc(doc)
         self.assertEqual(msg, decmsg)
@@ -97,6 +99,23 @@ class MailReceiverTestCase(unittest.TestCase):
         self.assertTrue(os.path.exists(path))
 
     @defer.inlineCallbacks
+    def test_expired_key(self):
+        defer_bounce = defer.Deferred()
+
+        def bounce_mock(*args):
+            defer_bounce.callback(args)
+            return defer.succeed(None)
+
+        self.pubKey = EXPIRED_KEY
+        self.receiver._bounce_with_timeout = bounce_mock
+
+        msg, path = self.addMail("foo bar")
+        bpath, bmsg, berr = yield defer_bounce
+        self.assertEqual(path, bpath.path)
+        self.assertEqual(msg, bmsg.as_string())
+        self.assertEqual("Expired key", str(berr))
+
+    @defer.inlineCallbacks
     def test_misleading_encoding(self):
         msg, path = self.addMail(
             "ñáûä", headers={'Content-Transfer-Encoding': '7Bit'})
@@ -300,3 +319,97 @@ RZXoH+FTg9UAW87eqU610npOkT6cRaBxaMK/mDtGNdc=
 =JTFu
 -----END PGP PRIVATE KEY BLOCK-----
 """
+
+
+EXPIRED_FINGERPRINT = "7C1F68B0E14157B09B5F4ADE6F15F004A1885A7C"
+EXPIRED_KEY = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.12 (GNU/Linux)
+
+mQENBBvrfd0BCADGNpspaNhsbhSjKioCWrE2MTTYC+Sdpes22RabdhQyOCWvlSbj
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+Osuse7+NkyUHgMXMVW7cz+nU7iO+ht2rkBtv+Z5LGlzgHTeFjKci
+=WhX+
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+EXPIRED_PRIVATE = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.12 (GNU/Linux)
+
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+=dZE8
+-----END PGP PRIVATE KEY BLOCK-----
+"""