mirror of
https://mau.dev/maunium/synapse.git
synced 2024-12-15 00:33:50 +01:00
71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
|
|
from signedjson.sign import verify_signed_json
|
|
from signedjson.key import decode_verify_key_bytes, write_signing_keys
|
|
from unpaddedbase64 import decode_base64
|
|
|
|
import urllib2
|
|
import json
|
|
import sys
|
|
import dns.resolver
|
|
import pprint
|
|
import argparse
|
|
import logging
|
|
|
|
def get_targets(server_name):
|
|
if ":" in server_name:
|
|
target, port = server_name.split(":")
|
|
yield (target, int(port))
|
|
return
|
|
try:
|
|
answers = dns.resolver.query("_matrix._tcp." + server_name, "SRV")
|
|
for srv in answers:
|
|
yield (srv.target, srv.port)
|
|
except dns.resolver.NXDOMAIN:
|
|
yield (server_name, 8448)
|
|
|
|
def get_server_keys(server_name, target, port):
|
|
url = "https://%s:%i/_matrix/key/v1" % (target, port)
|
|
keys = json.load(urllib2.urlopen(url))
|
|
verify_keys = {}
|
|
for key_id, key_base64 in keys["verify_keys"].items():
|
|
verify_key = decode_verify_key_bytes(key_id, decode_base64(key_base64))
|
|
verify_signed_json(keys, server_name, verify_key)
|
|
verify_keys[key_id] = verify_key
|
|
return verify_keys
|
|
|
|
def main():
|
|
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument("signature_name")
|
|
parser.add_argument("input_json", nargs="?", type=argparse.FileType('r'),
|
|
default=sys.stdin)
|
|
|
|
args = parser.parse_args()
|
|
logging.basicConfig()
|
|
|
|
server_name = args.signature_name
|
|
keys = {}
|
|
for target, port in get_targets(server_name):
|
|
try:
|
|
keys = get_server_keys(server_name, target, port)
|
|
print "Using keys from https://%s:%s/_matrix/key/v1" % (target, port)
|
|
write_signing_keys(sys.stdout, keys.values())
|
|
break
|
|
except:
|
|
logging.exception("Error talking to %s:%s", target, port)
|
|
|
|
json_to_check = json.load(args.input_json)
|
|
print "Checking JSON:"
|
|
for key_id in json_to_check["signatures"][args.signature_name]:
|
|
try:
|
|
key = keys[key_id]
|
|
verify_signed_json(json_to_check, args.signature_name, key)
|
|
print "PASS %s" % (key_id,)
|
|
except:
|
|
logging.exception("Check for key %s failed" % (key_id,))
|
|
print "FAIL %s" % (key_id,)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|
|
|