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Add a maximum size for well-known lookups. (#8950)

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Patrick Cloke 2020-12-16 17:25:24 -05:00 • committed by GitHub
parent e1b8e37f93
commit ff5c4da128
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5 changed files with 80 additions and 18 deletions
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13
synapse/http/matrixfederationclient.py
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@ -37,16 +37,19 @@ from twisted.web.iweb import IBodyProducer, IResponse
import synapse.metrics
import synapse.util.retryutils
from synapse.api.errors import (
Codes,
FederationDeniedError,
HttpResponseException,
RequestSendFailed,
SynapseError,
)
from synapse.http import QuieterFileBodyProducer
from synapse.http.client import (
BlacklistingAgentWrapper,
BlacklistingReactorWrapper,
BodyExceededMaxSize,
encode_query_args,
readBodyToFile,
read_body_with_max_size,
)
from synapse.http.federation.matrix_federation_agent import MatrixFederationAgent
from synapse.logging.context import make_deferred_yieldable
@ -975,9 +978,15 @@ class MatrixFederationHttpClient:
headers = dict(response.headers.getAllRawHeaders())
try:
d = readBodyToFile(response, output_stream, max_size)
d = read_body_with_max_size(response, output_stream, max_size)
d.addTimeout(self.default_timeout, self.reactor)
length = await make_deferred_yieldable(d)
except BodyExceededMaxSize:
msg = "Requested file is too large > %r bytes" % (max_size,)
logger.warning(
"{%s} [%s] %s", request.txn_id, request.destination, msg,
)
SynapseError(502, msg, Codes.TOO_LARGE)
except Exception as e:
logger.warning(
"{%s} [%s] Error reading response: %s",