def _connect(self):
conn = None
try:
if self.ssl:
if self.port == '':
conn = imaplib.IMAP4_SSL(self.server)
else:
conn = imaplib.IMAP4_SSL(self.server, int(self.port))
else:
if self.port == '':
conn = imaplib.IMAP4(self.server)
else:
conn = imaplib.IMAP4(self.server, int(self.port))
if 'STARTTLS' in conn.capabilities:
conn.starttls()
else:
logging.warning(
"Using unencrypted connection for account '%s'" %
self.name)
if self.oauth2string != '':
conn.authenticate('XOAUTH2', lambda x: self.oauth2string)
elif 'AUTH=CRAM-MD5' in conn.capabilities:
# use CRAM-MD5 auth if available
conn.login_cram_md5(self.user, self.password)
else:
conn.login(self.user, self.password)
except:
try:
if conn != None:
# conn.close() # allowed in SELECTED state only
conn.logout()
except:
pass
raise # re-throw exception
# notify_next_change() (IMAP IDLE) requires a selected folder
if conn.state == AUTH:
self._select_single_folder(conn)
return conn
def _get_IMAP_connection(self, use_existing):
# try to reuse existing connection
if use_existing and self._has_IMAP_connection():
return self._conn
self._conn = conn = None
try:
if self.ssl:
if self.port == '':
conn = imaplib.IMAP4_SSL(self.server)
else:
conn = imaplib.IMAP4_SSL(self.server, int(self.port))
else:
if self.port == '':
conn = imaplib.IMAP4(self.server)
else:
conn = imaplib.IMAP4(self.server, int(self.port))
if 'STARTTLS' in conn.capabilities:
conn.starttls()
else:
logging.warning("Using unencrypted connection for account '%s'" % self.name)
if self.oauth2string != '':
conn.authenticate('XOAUTH2', lambda x: self.oauth2string)
else:
conn.login(self.user, self.password)
self._conn = conn
except:
try:
if conn != None:
# conn.close() # allowed in SELECTED state only
conn.logout()
except: pass
raise # re-throw exception
return self._conn