[refactor] standardize smtp and imap service modules

1 files changed, 73 insertions, 0 deletions

diff --git a/src/leap/bitmask/mail/smtp/service.py b/src/leap/bitmask/mail/smtp/service.py
new file mode 100644
index 00000000..07c182d6
--- /dev/null
+++ b/src/leap/bitmask/mail/smtp/service.py
@@ -0,0 +1,73 @@
+# -*- coding: utf-8 -*-
+# service.py
+# Copyright (C) 2013-2016 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+"""
+SMTP gateway helper function.
+"""
+import logging
+import os
+
+from twisted.internet import reactor
+from twisted.internet.error import CannotListenError
+
+from leap.common.events import emit_async, catalog
+from leap.bitmask.mail.smtp.gateway import SMTPFactory
+
+logger = logging.getLogger(__name__)
+
+SMTP_PORT = 2013
+
+
+def run_service(soledad_sessions, keymanager_sessions, sendmail_opts,
+                port=SMTP_PORT, factory=None):
+    """
+    Main entry point to run the service from the client.
+
+    :param soledad_sessions: a dict-like object, containing instances
+                             of a Store (soledad instances), indexed by userid.
+    :param keymanager_sessions: a dict-like object, containing instances
+                                of Keymanager, indexed by userid.
+    :param sendmail_opts: a dict-like object of sendmailOptions.
+    :param factory: a factory for the protocol that will listen in the given
+                    port
+
+    :returns: the port as returned by the reactor when starts listening, and
+              the factory for the protocol.
+    :rtype: tuple
+    """
+    if not factory:
+        factory = SMTPFactory(soledad_sessions, keymanager_sessions,
+                              sendmail_opts)
+
+    try:
+        interface = "localhost"
+        # don't bind just to localhost if we are running on docker since we
+        # won't be able to access smtp from the host
+        if os.environ.get("LEAP_DOCKERIZED"):
+            interface = ''
+
+        # TODO Use Endpoints instead --------------------------------
+        tport = reactor.listenTCP(port, factory, interface=interface)
+        emit_async(catalog.SMTP_SERVICE_STARTED, str(port))
+
+        return tport, factory
+    except CannotListenError:
+        logger.error("STMP Service failed to start: "
+                     "cannot listen in port %s" % port)
+        emit_async(catalog.SMTP_SERVICE_FAILED_TO_START, str(port))
+    except Exception as exc:
+        logger.error("Unhandled error while launching smtp gateway service")
+        logger.exception(exc)