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rip out some unreachable code

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The only possible rejection reason is AUTH_ERROR, so all of this is unreachable.
This commit is contained in:
Richard van der Hoff 2019-10-11 14:50:48 +01:00
parent cad0132fb5
commit 1ba359a11f
4 changed files with 0 additions and 153 deletions
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102
synapse/handlers/federation.py
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@ -2181,103 +2181,10 @@ class FederationHandler(BaseHandler):
auth_events.update(new_state)
different_auth = event_auth_events.difference(
e.event_id for e in auth_events.values()
)
yield self._update_context_for_auth_events(
event, context, auth_events, event_key
)
if not different_auth:
# we're done
return
logger.info(
"auth_events still refers to events which are not in the calculated auth "
"chain after state resolution: %s",
different_auth,
)
# Only do auth resolution if we have something new to say.
# We can't prove an auth failure.
do_resolution = False
for e_id in different_auth:
if e_id in have_events:
if have_events[e_id] == RejectedReason.NOT_ANCESTOR:
do_resolution = True
break
if not do_resolution:
logger.info(
"Skipping auth resolution due to lack of provable rejection reasons"
)
return
logger.info("Doing auth resolution")
prev_state_ids = yield context.get_prev_state_ids(self.store)
# 1. Get what we think is the auth chain.
auth_ids = yield self.auth.compute_auth_events(event, prev_state_ids)
local_auth_chain = yield self.store.get_auth_chain(auth_ids, include_given=True)
try:
# 2. Get remote difference.
try:
result = yield self.federation_client.query_auth(
origin, event.room_id, event.event_id, local_auth_chain
)
except RequestSendFailed as e:
# The other side isn't around or doesn't implement the
# endpoint, so lets just bail out.
logger.info("Failed to query auth from remote: %s", e)
return
seen_remotes = yield self.store.have_seen_events(
[e.event_id for e in result["auth_chain"]]
)
# 3. Process any remote auth chain events we haven't seen.
for ev in result["auth_chain"]:
if ev.event_id in seen_remotes:
continue
if ev.event_id == event.event_id:
continue
try:
auth_ids = ev.auth_event_ids()
auth = {
(e.type, e.state_key): e
for e in result["auth_chain"]
if e.event_id in auth_ids or event.type == EventTypes.Create
}
ev.internal_metadata.outlier = True
logger.debug(
"do_auth %s different_auth: %s", event.event_id, e.event_id
)
yield self._handle_new_event(origin, ev, auth_events=auth)
if ev.event_id in event_auth_events:
auth_events[(ev.type, ev.state_key)] = ev
except AuthError:
pass
except Exception:
# FIXME:
logger.exception("Failed to query auth chain")
# 4. Look at rejects and their proofs.
# TODO.
yield self._update_context_for_auth_events(
event, context, auth_events, event_key
)
@defer.inlineCallbacks
def _update_context_for_auth_events(self, event, context, auth_events, event_key):
"""Update the state_ids in an event context after auth event resolution,
@ -2444,15 +2351,6 @@ class FederationHandler(BaseHandler):
reason_map[e.event_id] = reason
if reason == RejectedReason.AUTH_ERROR:
pass
elif reason == RejectedReason.REPLACED:
# TODO: Get proof
pass
elif reason == RejectedReason.NOT_ANCESTOR:
# TODO: Get proof.
pass
logger.debug("construct_auth_difference returning")
return {