Matrix-Mirrors/anonymousland-synapse
1
0
Fork 0
mirror of https://git.anonymousland.org/anonymousland/synapse.git synced 2025-08-02 10:06:04 -04:00
Code Issues Projects Releases Packages Wiki Activity

Treat an invalid .well-known the same as an absent one

Browse source 
... basically, carry on and fall back to SRV etc.
This commit is contained in:
Richard van der Hoff 2019-02-01 11:33:48 +00:00
parent 582786fbf2
commit 8a21b03fba
3 changed files with 79 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

29
synapse/http/federation/matrix_federation_agent.py
View file

@ -47,9 +47,6 @@ WELL_KNOWN_INVALID_CACHE_PERIOD = 1 * 3600
# cap for .well-known cache period
WELL_KNOWN_MAX_CACHE_PERIOD = 48 * 3600
# magic value to mark an invalid well-known
INVALID_WELL_KNOWN = object()
logger = logging.getLogger(__name__)
well_known_cache = TTLCache('well-known')
@ -108,8 +105,7 @@ class MatrixFederationAgent(object):
# our cache of .well-known lookup results, mapping from server name
# to delegated name. The values can be:
# `bytes`: a valid server-name
# `None`: there is no .well-known here
# INVALID_WELL_KNWOWN: the .well-known here is invalid
# `None`: there is no (valid) .well-known here
self._well_known_cache = _well_known_cache
@defer.inlineCallbacks
@ -302,9 +298,6 @@ class MatrixFederationAgent(object):
if cache_period > 0:
self._well_known_cache.set(server_name, result, cache_period)
if result == INVALID_WELL_KNOWN:
raise Exception("invalid .well-known on this server")
defer.returnValue(result)
@defer.inlineCallbacks
@ -331,6 +324,13 @@ class MatrixFederationAgent(object):
body = yield make_deferred_yieldable(readBody(response))
if response.code != 200:
raise Exception("Non-200 response %s" % (response.code, ))
parsed_body = json.loads(body.decode('utf-8'))
logger.info("Response from .well-known: %s", parsed_body)
if not isinstance(parsed_body, dict):
raise Exception("not a dict")
if "m.server" not in parsed_body:
raise Exception("Missing key 'm.server'")
except Exception as e:
logger.info("Error fetching %s: %s", uri_str, e)
@ -340,19 +340,6 @@ class MatrixFederationAgent(object):
cache_period += random.uniform(0, WELL_KNOWN_DEFAULT_CACHE_PERIOD_JITTER)
defer.returnValue((None, cache_period))
try:
parsed_body = json.loads(body.decode('utf-8'))
logger.info("Response from .well-known: %s", parsed_body)
if not isinstance(parsed_body, dict):
raise Exception("not a dict")
if "m.server" not in parsed_body:
raise Exception("Missing key 'm.server'")
except Exception as e:
logger.info("invalid .well-known response from %s: %s", uri_str, e)
cache_period = WELL_KNOWN_INVALID_CACHE_PERIOD
cache_period += random.uniform(0, WELL_KNOWN_DEFAULT_CACHE_PERIOD_JITTER)
defer.returnValue((INVALID_WELL_KNOWN, cache_period))
result = parsed_body["m.server"].encode("ascii")
cache_period = _cache_period_from_headers(