Merge branch 'release-0.3.4'0.3.4

3 files changed, 36 insertions, 6 deletions

diff --git a/CHANGELOG b/CHANGELOG
index fb62efd..45f1a7f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,9 @@
+0.3.4 Oct 4:
+  o Improve charset handling when exposing mails to the mail
+    client. Related to #3660.
+  o Return Twisted's smtp Port object to be able to stop listening to
+    it whenever we want. Related to #3873.
+
 0.3.3 Sep 20:
   o Remove cleartext mail from logs. Closes: #3877.
 
diff --git a/src/leap/mail/imap/server.py b/src/leap/mail/imap/server.py
index ae76833..10d338a 100644
--- a/src/leap/mail/imap/server.py
+++ b/src/leap/mail/imap/server.py
@@ -18,7 +18,9 @@
 Soledad-backed IMAP Server.
 """
 import copy
+import email
 import logging
+import re
 import StringIO
 import cStringIO
 import time
@@ -693,6 +695,26 @@ class LeapMessage(WithMsgFields):
     the more complex MIME-based interface.
     """
 
+    def _get_charset(self, content):
+        """
+        Mini parser to retrieve the charset of an email
+
+        :param content: mail contents
+        :type content: unicode
+
+        :returns: the charset as parsed from the contents
+        :rtype: str
+        """
+        charset = "UTF-8"
+        try:
+            em = email.message_from_string(content.encode("utf-8"))
+            # Miniparser for: Content-Type: <something>; charset=<charset>
+            charset_re = r'''charset=(?P<charset>[\w|\d|-]*)'''
+            charset = re.findall(charset_re, em["Content-Type"])[0]
+        except Exception:
+            pass
+        return charset
+
     def open(self):
         """
         Return an file-like object opened for reading.
@@ -704,7 +726,8 @@ class LeapMessage(WithMsgFields):
         :rtype: StringIO
         """
         fd = cStringIO.StringIO()
-        fd.write(str(self._doc.content.get(self.RAW_KEY, '')))
+        charset = self._get_charset(self._doc.content.get(self.RAW_KEY, ''))
+        fd.write(self._doc.content.get(self.RAW_KEY, '').encode(charset))
         fd.seek(0)
         return fd
 
@@ -723,7 +746,8 @@ class LeapMessage(WithMsgFields):
         :rtype: StringIO
         """
         fd = StringIO.StringIO()
-        fd.write(str(self._doc.content.get(self.RAW_KEY, '')))
+        charset = self._get_charset(self._doc.content.get(self.RAW_KEY, ''))
+        fd.write(self._doc.content.get(self.RAW_KEY, '').encode(charset))
         # SHOULD use a separate BODY FIELD ...
         fd.seek(0)
         return fd
diff --git a/src/leap/mail/smtp/__init__.py b/src/leap/mail/smtp/__init__.py
index 2a4abc5..4e5d2a0 100644
--- a/src/leap/mail/smtp/__init__.py
+++ b/src/leap/mail/smtp/__init__.py
@@ -54,7 +54,7 @@ def setup_smtp_relay(port, keymanager, smtp_host, smtp_port,
                            or not.
     :type encrypted_only: bool
 
-    :returns: SMTPFactory
+    :returns: tuple of SMTPFactory, twisted.internet.tcp.Port
     """
     # The configuration for the SMTP relay is a dict with the following
     # format:
@@ -77,10 +77,10 @@ def setup_smtp_relay(port, keymanager, smtp_host, smtp_port,
     # configure the use of this service with twistd
     factory = SMTPFactory(keymanager, config)
     try:
-        reactor.listenTCP(port, factory,
-                          interface="localhost")
+        tport = reactor.listenTCP(port, factory,
+                                  interface="localhost")
         signal(proto.SMTP_SERVICE_STARTED, str(smtp_port))
-        return factory
+        return factory, tport
     except CannotListenError:
         logger.error("STMP Service failed to start: "
                      "cannot listen in port %s" % (