[Twisted-Python] Handling UnauthorizedLogin Exception with PB
Justin Johnson
justinjohnson at fastmail.fm
Wed Jan 14 15:04:12 EST 2004
I have a PB server that uses new cred and the FileUserPasswordDB checker
for authentication. When users attempt to login with the incorrect
username/password, a twisted.cred.error.UnauthorizedLogin exception is
raised and logged on the server. The exception doesn't get passed back
to the client though. On the client side I have a deferred with multiple
callbacks added and a single errback added to the end as follows:
def mkrepexport(self, vobs, group, original_site, sites):
[...]
def _cbFailure(failure, site):
self.resultsTable.failures.append(["None","None",
Exception("Failure at site '%s'! The error is '%s'." %
(site, str(failure)) )])
return failure
[...]
deferreds = []
for vob in vobs:
for site in sites:
## Connect to exporting site
d =
self.connectToServer(config.siteToServer[original_site])
## Export the VOB to the site
d.addCallback(_cbExport, vob,
site).addErrback(_cbFailure, original_site)
## Connect to the importing site and import the VOB
d.addCallback(_cbInitiateImport, vob, group,
site).addErrback(_cbFailure, site)
## Add to the list of Deferreds
deferreds.append(d)
## Stop the reactor when complete
return defer.DeferredList(deferreds).addBoth(_cbStop)
When I attempt to login with an incorrect password, I get the following
output:
Task: None, Step: None, Failure: Failure at site 'stby'! The error
is '[Failure instance: Traceback from remote host -- Traceback
unavailable]'.
Traceback from remote host -- Traceback unavailable
Is there something special I need to do to get the exception information
passed back to the client?
Thanks.
-Justin
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