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pull out handle_key_deferred to top level 

There's no need for this to be a nested definition; pulling it out not only
makes it more efficient, but makes it easier to check that it's not accessing
any local variables it shouldn't be.
This commit is contained in:
Richard van der Hoff 2017-09-20 01:32:42 +01:00
parent dd1ea9763a
commit 2d511defd9
1 changed files with 44 additions and 43 deletions
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87
synapse/crypto/keyring.py
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@ -122,48 +122,6 @@ class Keyring(object):
verify_requests.append(verify_request)
@defer.inlineCallbacks
def handle_key_deferred(verify_request):
server_name = verify_request.server_name
try:
_, key_id, verify_key = yield verify_request.deferred
except IOError as e:
logger.warn(
"Got IOError when downloading keys for %s: %s %s",
server_name, type(e).__name__, str(e.message),
)
raise SynapseError(
502,
"Error downloading keys for %s" % (server_name,),
Codes.UNAUTHORIZED,
)
except Exception as e:
logger.exception(
"Got Exception when downloading keys for %s: %s %s",
server_name, type(e).__name__, str(e.message),
)
raise SynapseError(
401,
"No key for %s with id %s" % (server_name, verify_request.key_ids),
Codes.UNAUTHORIZED,
)
json_object = verify_request.json_object
logger.debug("Got key %s %s:%s for server %s, verifying" % (
key_id, verify_key.alg, verify_key.version, server_name,
))
try:
verify_signed_json(json_object, server_name, verify_key)
except:
raise SynapseError(
401,
"Invalid signature for server %s with key %s:%s" % (
server_name, verify_key.alg, verify_key.version
),
Codes.UNAUTHORIZED,
)
server_to_deferred = {
server_name: defer.Deferred()
for server_name, _ in server_and_json
@ -208,7 +166,7 @@ class Keyring(object):
# Pass those keys to handle_key_deferred so that the json object
# signatures can be verified
return [
preserve_context_over_fn(handle_key_deferred, verify_request)
preserve_context_over_fn(_handle_key_deferred, verify_request)
for verify_request in verify_requests
]
@ -740,3 +698,46 @@ class Keyring(object):
],
consumeErrors=True,
).addErrback(unwrapFirstError))
@defer.inlineCallbacks
def _handle_key_deferred(verify_request):
server_name = verify_request.server_name
try:
_, key_id, verify_key = yield verify_request.deferred
except IOError as e:
logger.warn(
"Got IOError when downloading keys for %s: %s %s",
server_name, type(e).__name__, str(e.message),
)
raise SynapseError(
502,
"Error downloading keys for %s" % (server_name,),
Codes.UNAUTHORIZED,
)
except Exception as e:
logger.exception(
"Got Exception when downloading keys for %s: %s %s",
server_name, type(e).__name__, str(e.message),
)
raise SynapseError(
401,
"No key for %s with id %s" % (server_name, verify_request.key_ids),
Codes.UNAUTHORIZED,
)
json_object = verify_request.json_object
logger.debug("Got key %s %s:%s for server %s, verifying" % (
key_id, verify_key.alg, verify_key.version, server_name,
))
try:
verify_signed_json(json_object, server_name, verify_key)
except:
raise SynapseError(
401,
"Invalid signature for server %s with key %s:%s" % (
server_name, verify_key.alg, verify_key.version
),
Codes.UNAUTHORIZED,
)