Burn `check_signature` dev script. (#12351)

changelog.d/12349.misc

@@ -1 +1 @@
-Remove unused and broken dev script `list_url_patterns.py`.
+Remove broken and unused development scripts.

changelog.d/12351.misc

@@ -0,0 +1 @@
+Remove broken and unused development scripts.

mypy.ini

@@ -24,7 +24,6 @@ files =
 exclude = (?x)
   ^(
    |scripts-dev/build_debian_packages.py
-   |scripts-dev/check_signature.py
    |scripts-dev/definitions.py
    |scripts-dev/federation_client.py
    |scripts-dev/hash_history.py

scripts-dev/check_signature.py

@@ -1,72 +0,0 @@
-import argparse
-import json
-import logging
-import sys
-
-import dns.resolver
-import urllib2
-from signedjson.key import decode_verify_key_bytes, write_signing_keys
-from signedjson.sign import verify_signed_json
-from unpaddedbase64 import decode_base64
-
-
-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 Exception:
-            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 Exception:
-            logging.exception("Check for key %s failed" % (key_id,))
-            print("FAIL %s" % (key_id,))
-
-
-if __name__ == "__main__":
-    main()