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Fix expired oauth2_access_token 

Use `expires_in` from the oauth2 response
to reset the oauth2_access_token before
it expires

divides the `expires_in` by 2 to ensure
the access_token is cleared before it
expires

ref: https://github.com/OfflineIMAP/offlineimap/issues/536

Signed-off-by: Frode Aannevik <frode.aa@gmail.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This commit is contained in:
Frode Aannevik 2018-11-18 19:52:00 +01:00 committed by Nicolas Sebrecht
parent af3a35ae30
commit 8692799e65
1 changed files with 14 additions and 2 deletions
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16
offlineimap/imapserver.py
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@ -15,6 +15,7 @@
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import datetime
import hmac
import socket
import json
@ -111,6 +112,7 @@ class IMAPServer(object):
self.oauth2_client_id = repos.getoauth2_client_id()
self.oauth2_client_secret = repos.getoauth2_client_secret()
self.oauth2_request_url = repos.getoauth2_request_url()
self.oauth2_access_token_expires_at = None
self.delim = None
self.root = None
@ -219,6 +221,12 @@ class IMAPServer(object):
return retval
def __xoauth2handler(self, response):
now = datetime.datetime.now()
if self.oauth2_access_token_expires_at \
and self.oauth2_access_token_expires_at < now:
self.oauth2_access_token = None
self.ui.debug('imap', 'xoauth2handler: oauth2_access_token expired')
if self.oauth2_access_token is None:
if self.oauth2_request_url is None:
raise OfflineImapError("No remote oauth2_request_url for "
@ -256,9 +264,13 @@ class IMAPServer(object):
raise OfflineImapError("xoauth2handler got: %s"% resp,
OfflineImapError.ERROR.REPO)
self.oauth2_access_token = resp['access_token']
if u'expires_in' in resp:
self.oauth2_access_token_expires_at = now + datetime.timedelta(
seconds=resp['expires_in']/2
)
self.ui.debug('imap', 'xoauth2handler: access_token "%s"'%
self.oauth2_access_token)
self.ui.debug('imap', 'xoauth2handler: access_token "%s expires %s"'% (
self.oauth2_access_token, self.oauth2_access_token_expires_at))
auth_string = 'user=%s\1auth=Bearer %s\1\1'% (
self.username, self.oauth2_access_token)
#auth_string = base64.b64encode(auth_string)