notify MUA of new mail as it gets added to mailbox

4 files changed, 80 insertions, 17 deletions

diff --git a/changes/feature-mail-notifications b/changes/feature-mail-notifications
new file mode 100644
index 0000000..8e52493
--- /dev/null
+++ b/changes/feature-mail-notifications
@@ -0,0 +1 @@
+  o Notify MUA of new mail, using IDLE as advertised. Closes: #3671
diff --git a/src/leap/mail/imap/fetch.py b/src/leap/mail/imap/fetch.py
index 2775d71..dd65def 100644
--- a/src/leap/mail/imap/fetch.py
+++ b/src/leap/mail/imap/fetch.py
@@ -31,9 +31,6 @@ from twisted.internet.threads import deferToThread
 
 from leap.common import events as leap_events
 from leap.common.check import leap_assert, leap_assert_type
-from leap.soledad.client import Soledad
-from leap.soledad.common.crypto import ENC_SCHEME_KEY, ENC_JSON_KEY
-
 from leap.common.events.events_pb2 import IMAP_FETCHED_INCOMING
 from leap.common.events.events_pb2 import IMAP_MSG_PROCESSING
 from leap.common.events.events_pb2 import IMAP_MSG_DECRYPTED
@@ -41,6 +38,9 @@ from leap.common.events.events_pb2 import IMAP_MSG_SAVED_LOCALLY
 from leap.common.events.events_pb2 import IMAP_MSG_DELETED_INCOMING
 from leap.common.events.events_pb2 import IMAP_UNREAD_MAIL
 from leap.common.mail import get_email_charset
+from leap.keymanager import errors as keymanager_errors
+from leap.soledad.client import Soledad
+from leap.soledad.common.crypto import ENC_SCHEME_KEY, ENC_JSON_KEY
 
 
 logger = logging.getLogger(__name__)
@@ -198,6 +198,29 @@ class LeapIncomingMail(object):
             logger.warning('Unknown error while '
                            'syncing soledad: %r' % (err,))
 
+    def _log_err(self, failure):
+        """
+        Generic errback
+        """
+        err = failure.value
+        logger.error("error!: %r" % (err,))
+
+    def _decryption_error(self, failure):
+        """
+        Errback for decryption errors.
+        """
+        # XXX should signal unrecoverable maybe.
+        err = failure.value
+        logger.error("error decrypting msg: %s" % (err,))
+
+    def _saving_error(self, failure):
+        """
+        Errback for local save errors.
+        """
+        # XXX should signal unrecoverable maybe.
+        err = failure.value
+        logger.error("error saving msg locally: %s" % (err,))
+
     def _process_doclist(self, doclist):
         """
         Iterates through the doclist, checks if each doc
@@ -228,7 +251,13 @@ class LeapIncomingMail(object):
                 # Deferred chain for individual messages
                 d = deferToThread(self._decrypt_msg, doc, encdata)
                 d.addCallback(self._process_decrypted)
+                d.addErrback(self._log_err)
                 d.addCallback(self._add_message_locally)
+                d.addErrback(self._log_err)
+                # XXX check this, add_locally should not get called if we
+                # get an error in process
+                #d.addCallbacks(self._process_decrypted, self._decryption_error)
+                #d.addCallbacks(self._add_message_locally, self._saving_error)
                 docs_cb.append(d)
             else:
                 # Ooops, this does not.
@@ -289,8 +318,12 @@ class LeapIncomingMail(object):
         rawmsg = msg.get(self.CONTENT_KEY, None)
         if not rawmsg:
             return False
-        data = self._maybe_decrypt_gpg_msg(rawmsg)
-        return doc, data
+        try:
+            data = self._maybe_decrypt_gpg_msg(rawmsg)
+            return doc, data
+        except keymanager_errors.EncryptionDecryptionFailed as exc:
+            logger.error(exc)
+            raise
 
     def _maybe_decrypt_gpg_msg(self, data):
         """
@@ -384,6 +417,7 @@ class LeapIncomingMail(object):
                          incoming message
         :type msgtuple: (SoledadDocument, str)
         """
+        print "adding message locally....."
         doc, data = msgtuple
         self._inbox.addMessage(data, (self.RECENT_FLAG,))
         leap_events.signal(IMAP_MSG_SAVED_LOCALLY)
diff --git a/src/leap/mail/imap/server.py b/src/leap/mail/imap/server.py
index 9e3e23e..7a9f810 100644
--- a/src/leap/mail/imap/server.py
+++ b/src/leap/mail/imap/server.py
@@ -573,7 +573,7 @@ class SoledadBackedAccount(WithMsgFields, IndexedDB):
         return "<SoledadBackedAccount (%s)>" % self._account_name
 
 #######################################
-# Soledad Message, MessageCollection
+# LeapMessage, MessageCollection
 # and Mailbox
 #######################################
 
@@ -1099,6 +1099,7 @@ class SoledadMailbox(WithMsgFields):
     which we instantiate and make accessible in the `messages` attribute.
     """
     implements(imap4.IMailboxInfo, imap4.IMailbox, imap4.ICloseableMailbox)
+    # XXX should finish the implementation of IMailboxListener
 
     messages = None
     _closed = False
@@ -1115,6 +1116,8 @@ class SoledadMailbox(WithMsgFields):
     CMD_UIDVALIDITY = "UIDVALIDITY"
     CMD_UNSEEN = "UNSEEN"
 
+    listeners = []
+
     def __init__(self, mbox, soledad=None, rw=1):
         """
         SoledadMailbox constructor. Needs to get passed a name, plus a
@@ -1147,15 +1150,35 @@ class SoledadMailbox(WithMsgFields):
         if not self.getFlags():
             self.setFlags(self.INIT_FLAGS)
 
-        # XXX what is/was this used for? --------
-        # ---> mail/imap4.py +1155,
-        #      _cbSelectWork makes use of this
-        # probably should implement hooks here
-        # using leap.common.events
-        self.listeners = []
-        self.addListener = self.listeners.append
-        self.removeListener = self.listeners.remove
-        #------------------------------------------
+        # the server itself is a listener to the mailbox.
+        # so we can notify it (and should!) after chanes in flags
+        # and number of messages.
+        print "emptying the listeners"
+        map(lambda i: self.listeners.remove(i), self.listeners)
+
+    def addListener(self, listener):
+        """
+        Rdds a listener to the listeners queue.
+
+        :param listener: listener to add
+        :type listener: an object that implements IMailboxListener
+        """
+        logger.debug('adding mailbox listener: %s' % listener)
+        self.listeners.append(listener)
+
+    def removeListener(self, listener):
+        """
+        Removes a listener from the listeners queue.
+
+        :param listener: listener to remove
+        :type listener: an object that implements IMailboxListener
+        """
+        logger.debug('removing mailbox listener: %s' % listener)
+        try:
+            self.listeners.remove(listener)
+        except ValueError:
+            logger.error(
+                "removeListener: cannot remove listener %s" % listener)
 
     def _get_mbox(self):
         """
@@ -1180,6 +1203,7 @@ class SoledadMailbox(WithMsgFields):
         #return map(str, self.INIT_FLAGS)
 
         # XXX CHECK against thunderbird XXX
+        # XXX I think this is slightly broken.. :/
 
         mbox = self._get_mbox()
         if not mbox:
@@ -1352,6 +1376,10 @@ class SoledadMailbox(WithMsgFields):
 
         self.messages.add_msg(message, flags=flags, date=date,
                               uid=uid_next)
+        exists = len(self.messages)
+        recent = len(self.messages.get_recent())
+        for listener in self.listeners:
+            listener.newMessages(exists, recent)
         return defer.succeed(None)
 
     # commands, do not rename methods
diff --git a/src/leap/mail/imap/service/imap.py b/src/leap/mail/imap/service/imap.py
index b641d2e..5f7322a 100644
--- a/src/leap/mail/imap/service/imap.py
+++ b/src/leap/mail/imap/service/imap.py
@@ -77,7 +77,7 @@ class LeapIMAPServer(imap4.IMAP4Server):
         #self.theAccount = theAccount
 
     def lineReceived(self, line):
-        if "login" in line:
+        if "login" in line.lower():
             # avoid to log the pass, even though we are using a dummy auth
             # by now.
             msg = line[:7] + " [...]"
@@ -160,7 +160,7 @@ def run_service(*args, **kwargs):
 
     try:
         tport = reactor.listenTCP(port, factory,
-                                 interface="localhost")
+                                  interface="localhost")
         fetcher = LeapIncomingMail(
             keymanager,
             soledad,