71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
# Copyright 2022 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from typing import TYPE_CHECKING, Tuple
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from synapse.http.server import DirectServeJsonResource
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from synapse.http.site import SynapseRequest
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from synapse.types import JsonDict
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class JwksResource(DirectServeJsonResource):
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def __init__(self, hs: "HomeServer"):
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super().__init__(extract_context=True)
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# Parameters that are allowed to be exposed in the public key.
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# This is done manually, because authlib's private to public key conversion
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# is unreliable depending on the version. Instead, we just serialize the private
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# key and only keep the public parameters.
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# List from https://www.iana.org/assignments/jose/jose.xhtml#web-key-parameters
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public_parameters = {
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"kty",
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"use",
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"key_ops",
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"alg",
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"kid",
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"x5u",
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"x5c",
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"x5t",
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"x5t#S256",
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"crv",
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"x",
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"y",
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"n",
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"e",
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"ext",
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}
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key = hs.config.experimental.msc3861.jwk
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if key is not None:
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private_key = key.as_dict()
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public_key = {
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k: v for k, v in private_key.items() if k in public_parameters
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}
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keys = [public_key]
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else:
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keys = []
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self.res = {
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"keys": keys,
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}
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async def _async_render_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
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return 200, self.res
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