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idle: protect all calls to imapobj.noop() (coonection might be dropped)

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Some code refactoring.

Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This commit is contained in:
Nicolas Sebrecht 2016-09-13 04:41:31 +02:00
parent bdfec8d2da
commit dbcfc0b173
1 changed files with 25 additions and 17 deletions
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42
offlineimap/imapserver.py
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@ -86,22 +86,22 @@ class IMAPServer(object):
self.usessl = repos.getssl()
self.useipv6 = repos.getipv6()
if self.useipv6 == True:
if self.useipv6 is True:
self.af = socket.AF_INET6
elif self.useipv6 == False:
elif self.useipv6 is False:
self.af = socket.AF_INET
else:
self.af = socket.AF_UNSPEC
self.hostname = \
None if self.preauth_tunnel else repos.gethost()
self.hostname = None if self.preauth_tunnel else repos.gethost()
self.port = repos.getport()
if self.port == None:
if self.port is None:
self.port = 993 if self.usessl else 143
self.sslclientcert = repos.getsslclientcert()
self.sslclientkey = repos.getsslclientkey()
self.sslcacertfile = repos.getsslcacertfile()
if self.sslcacertfile is None:
self.__verifycert = None # disable cert verification
self.__verifycert = None # Disable cert verification.
# This way of working sucks hard...
self.fingerprint = repos.get_ssl_fingerprint()
self.tlslevel = repos.gettlslevel()
self.sslversion = repos.getsslversion()
@ -671,7 +671,8 @@ class IMAPServer(object):
threads = []
for i in range(numconnections):
self.ui.debug('imap', 'keepalive: processing connection %d of %d'% (i, numconnections))
self.ui.debug('imap', 'keepalive: processing connection %d of %d'%
(i, numconnections))
if len(self.idlefolders) > i:
# IDLE thread
idler = IdleThread(self, self.idlefolders[i])
@ -805,12 +806,27 @@ class IdleThread(object):
while in IDLE mode, b) we get an Exception (e.g. on dropped
connections, or c) the standard imaplib IDLE timeout of 29
minutes kicks in."""
result, cb_arg, exc_data = args
if exc_data is None and not self.stop_sig.isSet():
# No Exception, and we are not supposed to stop:
self.needsync = True
self.stop_sig.set() # Continue to sync.
def noop(imapobj):
"""Factorize the noop code."""
try:
# End IDLE mode with noop, imapobj can point to a dropped conn.
imapobj.noop()
except imapobj.abort:
self.ui.warn('Attempting NOOP on dropped connection %s'%
imapobj.identifier)
self.parent.releaseconnection(imapobj, True)
else:
self.parent.releaseconnection(imapobj)
while not self.stop_sig.isSet():
self.needsync = False
@ -837,17 +853,9 @@ class IdleThread(object):
else:
self.ui.warn("IMAP IDLE not supported on server '%s'."
"Sleep until next refresh cycle."% imapobj.identifier)
imapobj.noop()
noop(imapobj) #XXX: why?
self.stop_sig.wait() # self.stop() or IDLE callback are invoked.
try:
# End IDLE mode with noop, imapobj can point to a dropped conn.
imapobj.noop()
except imapobj.abort:
self.ui.warn('Attempting NOOP on dropped connection %s'%
imapobj.identifier)
self.parent.releaseconnection(imapobj, True)
else:
self.parent.releaseconnection(imapobj)
noop(imapobj)
if self.needsync:
# Here not via self.stop, but because IDLE responded. Do