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127 lines
3.6 KiB
Python
Executable file
127 lines
3.6 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# -*- coding: utf-8 -*-
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# Copyright 2020 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 argparse
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import json
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import sys
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from json import JSONDecodeError
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import yaml
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from signedjson.key import read_signing_keys
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from signedjson.sign import sign_json
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from synapse.util import json_encoder
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def main():
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parser = argparse.ArgumentParser(
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description="""Adds a signature to a JSON object.
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Example usage:
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$ scripts-dev/sign_json.py -N test -k localhost.signing.key "{}"
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{"signatures":{"test":{"ed25519:a_ZnZh":"LmPnml6iM0iR..."}}}
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""",
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formatter_class=argparse.RawDescriptionHelpFormatter,
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)
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parser.add_argument(
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"-N",
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"--server-name",
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help="Name to give as the local homeserver. If unspecified, will be "
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"read from the config file.",
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)
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parser.add_argument(
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"-k",
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"--signing-key-path",
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help="Path to the file containing the private ed25519 key to sign the "
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"request with.",
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)
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parser.add_argument(
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"-c",
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"--config",
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default="homeserver.yaml",
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help=(
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"Path to synapse config file, from which the server name and/or signing "
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"key path will be read. Ignored if --server-name and --signing-key-path "
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"are both given."
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),
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)
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input_args = parser.add_mutually_exclusive_group()
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input_args.add_argument("input_data", nargs="?", help="Raw JSON to be signed.")
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input_args.add_argument(
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"-i",
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"--input",
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type=argparse.FileType("r"),
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default=sys.stdin,
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help=(
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"A file from which to read the JSON to be signed. If neither --input nor "
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"input_data are given, JSON will be read from stdin."
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),
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)
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parser.add_argument(
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"-o",
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"--output",
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type=argparse.FileType("w"),
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default=sys.stdout,
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help="Where to write the signed JSON. Defaults to stdout.",
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)
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args = parser.parse_args()
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if not args.server_name or not args.signing_key_path:
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read_args_from_config(args)
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with open(args.signing_key_path) as f:
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key = read_signing_keys(f)[0]
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json_to_sign = args.input_data
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if json_to_sign is None:
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json_to_sign = args.input.read()
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try:
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obj = json.loads(json_to_sign)
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except JSONDecodeError as e:
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print("Unable to parse input as JSON: %s" % e, file=sys.stderr)
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sys.exit(1)
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if not isinstance(obj, dict):
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print("Input json was not an object", file=sys.stderr)
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sys.exit(1)
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sign_json(obj, args.server_name, key)
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for c in json_encoder.iterencode(obj):
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args.output.write(c)
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args.output.write("\n")
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def read_args_from_config(args: argparse.Namespace) -> None:
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with open(args.config, "r") as fh:
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config = yaml.safe_load(fh)
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if not args.server_name:
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args.server_name = config["server_name"]
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if not args.signing_key_path:
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args.signing_key_path = config["signing_key_path"]
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if __name__ == "__main__":
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main()
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