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Merge pull request #5307 from matrix-org/rav/server_keys/07-fix-notary-cache-poison
Stop overwriting server keys with other keys
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862b2f9ad5
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changelog.d/5307.bugfix
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changelog.d/5307.bugfix
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@ -0,0 +1 @@
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Fix bug where a notary server would sometimes forget old keys.
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@ -399,7 +399,7 @@ class BaseV2KeyFetcher(object):
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@defer.inlineCallbacks
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def process_v2_response(
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self, from_server, response_json, time_added_ms, requested_ids=[]
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self, from_server, response_json, time_added_ms
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):
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"""Parse a 'Server Keys' structure from the result of a /key request
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@ -422,10 +422,6 @@ class BaseV2KeyFetcher(object):
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time_added_ms (int): the timestamp to record in server_keys_json
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requested_ids (iterable[str]): a list of the key IDs that were requested.
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We will store the json for these key ids as well as any that are
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actually in the response
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Returns:
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Deferred[dict[str, FetchKeyResult]]: map from key_id to result object
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"""
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@ -481,11 +477,6 @@ class BaseV2KeyFetcher(object):
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signed_key_json_bytes = encode_canonical_json(signed_key_json)
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# for reasons I don't quite understand, we store this json for the key ids we
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# requested, as well as those we got.
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updated_key_ids = set(requested_ids)
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updated_key_ids.update(verify_keys)
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yield logcontext.make_deferred_yieldable(
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defer.gatherResults(
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[
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@ -498,7 +489,7 @@ class BaseV2KeyFetcher(object):
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ts_expires_ms=ts_valid_until_ms,
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key_json_bytes=signed_key_json_bytes,
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)
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for key_id in updated_key_ids
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for key_id in verify_keys
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],
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consumeErrors=True,
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).addErrback(unwrapFirstError)
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@ -754,7 +745,6 @@ class ServerKeyFetcher(BaseV2KeyFetcher):
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response_keys = yield self.process_v2_response(
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from_server=server_name,
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requested_ids=[requested_key_id],
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response_json=response,
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time_added_ms=time_now_ms,
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)
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