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GMail: Add ability to set a custom host/port/ssl etc.

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The GMail repository added in 81b86fb has the restriction that you
can't override the host/port/ssl etc. There's no good reason for this,
and I'd like to use some of the defaults while connecting to GMail via
an stunnel, i.e.:

    $ grep -v -e ^# -e ^$ .stunnel.work-gmail-imap
    foreground = yes
    debug = info
    pid =
    [work-imap-gmail-ssl-tunnel]
    client = yes
    accept = 127.0.0.1:1431
    connect = imap.gmail.com:993
    delay = yes

And then in my .offlineimaprc:

    type = Gmail
    remotehost = localhost
    remoteport = 1431
    ssl = no

While I was at it I also allowed overriding all the other previously
hardcoded options, e.g. the "oauth2_request_url" can now be overridden
to e.g. a local non-https proxy to sniff & debug the traffic going
over the wire.

This doesn't break any existing configuration, since we still use the
provided defaults. It just allows odd uses like my own to use this
repository while e.g. not having to supply "trashfolder", "spamfolder"
& "oauth2_request_url". While I'm at it document in the
offlineimap.conf that we're setting those options to defaults in this
repository.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This commit is contained in:
Ævar Arnfjörð Bjarmason 2016-11-17 11:45:24 +01:00 committed by Nicolas Sebrecht
parent a5e32929b6
commit 7b59d6b3ae
2 changed files with 49 additions and 27 deletions
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12
offlineimap.conf
View File

@ -1242,12 +1242,18 @@ remoteuser = username
# Only "remoteuser" (or "remoteusereval" ) is mandatory. Default values for
# other parameters are OK, and you should not need fiddle with those.
#
# The Gmail repository will use hard-coded values for "remotehost",
# "remoteport", "tunnel" and "ssl". Any attempt to set those parameters will be
# silently ignored. For details, see
# The Gmail repository provides default values for "remotehost",
# "remoteport", "tunnel" and "ssl". For the defaults we use, see:
#
# http://mail.google.com/support/bin/answer.py?answer=78799&topic=12814
#
# In addition we provide defaults for "oauth2_request_url",
# "trashfolder" and "spamfolder".
#
# All of the defaults we provide can be overriden. E.g. you can
# override "remotehost"/"remoteport"/"ssl" if you'd like to connect to
# imap.gmail.com via a local stunnel instead of directly.
#
# To enable GMail labels synchronisation, set the option "synclabels" in the
# corresponding "Account" section.
#

62
offlineimap/repository/Gmail.py
View File

@ -21,55 +21,68 @@ from offlineimap import folder, OfflineImapError
class GmailRepository(IMAPRepository):
"""Gmail IMAP repository.
Falls back to hard-coded gmail host name and port, if none were specified:
This class just has default settings for GMail's IMAP service. So
you can do 'type = Gmail' instead of 'type = IMAP' and skip
specifying the hostname, port etc. See
http://mail.google.com/support/bin/answer.py?answer=78799&topic=12814
"""
# Gmail IMAP server hostname
HOSTNAME = "imap.gmail.com"
# Gmail IMAP server port
PORT = 993
OAUTH2_URL = 'https://accounts.google.com/o/oauth2/token'
for the values we use."""
def __init__(self, reposname, account):
"""Initialize a GmailRepository object."""
# Enforce SSL usage
account.getconfig().set('Repository ' + reposname,
'ssl', 'yes')
IMAPRepository.__init__(self, reposname, account)
def gethost(self):
"""Return the server name to connect to.
Gmail implementation first checks for the usual IMAP settings
and falls back to imap.gmail.com if not specified."""
We first check the usual IMAP settings, and then fall back to
imap.gmail.com if nothing is specified."""
try:
return super(GmailRepository, self).gethost()
except OfflineImapError:
# Nothing was configured, cache and return hardcoded one.
self._host = GmailRepository.HOSTNAME
# Nothing was configured, cache and return hardcoded
# one. See the parent class (IMAPRepository) for how this
# cache is used.
self._host = "imap.gmail.com"
return self._host
def getoauth2_request_url(self):
"""Return the server name to connect to.
"""Return the OAuth URL to request tokens from.
Gmail implementation first checks for the usual IMAP settings
and falls back to imap.gmail.com if not specified."""
We first check the usual OAuth settings, and then fall back to
https://accounts.google.com/o/oauth2/token if nothing is
specified."""
url = super(GmailRepository, self).getoauth2_request_url()
if url is None:
# Nothing was configured, cache and return hardcoded one.
self.setoauth2_request_url(GmailRepository.OAUTH2_URL)
self.setoauth2_request_url("https://accounts.google.com/o/oauth2/token")
else:
self.setoauth2_request_url(url)
return self.oauth2_request_url
def getport(self):
return GmailRepository.PORT
"""Return the port number to connect to.
This Gmail implementation first checks for the usual IMAP settings
and falls back to 993 if nothing is specified."""
port = super(GmailRepository, self).getport()
if port is None:
return 993
else:
return port
def getssl(self):
return 1
ssl = self.getconfboolean('ssl', None)
if ssl is None:
# Nothing was configured, return our default setting for
# GMail. Maybe this should look more similar to gethost &
# we could just rely on the global "ssl = yes" default.
return True
else:
return ssl
def getpreauthtunnel(self):
return None
@ -86,5 +99,8 @@ class GmailRepository(IMAPRepository):
return self.getconf('trashfolder', '[Gmail]/Trash')
def getspamfolder(self):
#: Gmail also deletes messages upon EXPUNGE in the Spam folder
# Depending on the IMAP settings (Settings -> Forwarding and
# POP/IMAP -> IMAP Access -> "When I mark a message in IMAP as
# deleted") GMail might also deletes messages upon EXPUNGE in
# the Spam folder.
return self.getconf('spamfolder', '[Gmail]/Spam')