diff options
| -rw-r--r-- | changelog.d/14479.misc | 1 | ||||
| -rwxr-xr-x | scripts-dev/federation_client.py | 122 |
2 files changed, 88 insertions, 35 deletions
diff --git a/changelog.d/14479.misc b/changelog.d/14479.misc new file mode 100644 index 0000000000..08edd2f929 --- /dev/null +++ b/changelog.d/14479.misc @@ -0,0 +1 @@ +`scripts-dev/federation_client`: Fix routing on servers with `.well-known` files. \ No newline at end of file diff --git a/scripts-dev/federation_client.py b/scripts-dev/federation_client.py index 763dd02c47..b1d5e2e616 100755 --- a/scripts-dev/federation_client.py +++ b/scripts-dev/federation_client.py @@ -46,11 +46,12 @@ import signedjson.key import signedjson.types import srvlookup import yaml +from requests import PreparedRequest, Response from requests.adapters import HTTPAdapter from urllib3 import HTTPConnectionPool # uncomment the following to enable debug logging of http requests -# from httplib import HTTPConnection +# from http.client import HTTPConnection # HTTPConnection.debuglevel = 1 @@ -103,6 +104,7 @@ def request( destination: str, path: str, content: Optional[str], + verify_tls: bool, ) -> requests.Response: if method is None: if content is None: @@ -141,7 +143,6 @@ def request( s.mount("matrix://", MatrixConnectionAdapter()) headers: Dict[str, str] = { - "Host": destination, "Authorization": authorization_headers[0], } @@ -152,7 +153,7 @@ def request( method=method, url=dest, headers=headers, - verify=False, + verify=verify_tls, data=content, stream=True, ) @@ -203,6 +204,12 @@ def main() -> None: parser.add_argument("--body", help="Data to send as the body of the HTTP request") parser.add_argument( + "--insecure", + action="store_true", + help="Disable TLS certificate verification", + ) + + parser.add_argument( "path", help="request path, including the '/_matrix/federation/...' prefix." ) @@ -227,6 +234,7 @@ def main() -> None: args.destination, args.path, content=args.body, + verify_tls=not args.insecure, ) sys.stderr.write("Status Code: %d\n" % (result.status_code,)) @@ -254,36 +262,93 @@ def read_args_from_config(args: argparse.Namespace) -> None: class MatrixConnectionAdapter(HTTPAdapter): + def send( + self, + request: PreparedRequest, + *args: Any, + **kwargs: Any, + ) -> Response: + # overrides the send() method in the base class. + + # We need to look for .well-known redirects before passing the request up to + # HTTPAdapter.send(). + assert isinstance(request.url, str) + parsed = urlparse.urlsplit(request.url) + server_name = parsed.netloc + well_known = self._get_well_known(parsed.netloc) + + if well_known: + server_name = well_known + + # replace the scheme in the uri with https, so that cert verification is done + # also replace the hostname if we got a .well-known result + request.url = urlparse.urlunsplit( + ("https", server_name, parsed.path, parsed.query, parsed.fragment) + ) + + # at this point we also add the host header (otherwise urllib will add one + # based on the `host` from the connection returned by `get_connection`, + # which will be wrong if there is an SRV record). + request.headers["Host"] = server_name + + return super().send(request, *args, **kwargs) + + def get_connection( + self, url: str, proxies: Optional[Dict[str, str]] = None + ) -> HTTPConnectionPool: + # overrides the get_connection() method in the base class + parsed = urlparse.urlsplit(url) + (host, port, ssl_server_name) = self._lookup(parsed.netloc) + print( + f"Connecting to {host}:{port} with SNI {ssl_server_name}", file=sys.stderr + ) + return self.poolmanager.connection_from_host( + host, + port=port, + scheme="https", + pool_kwargs={"server_hostname": ssl_server_name}, + ) + @staticmethod - def lookup(s: str, skip_well_known: bool = False) -> Tuple[str, int]: - if s[-1] == "]": + def _lookup(server_name: str) -> Tuple[str, int, str]: + """ + Do an SRV lookup on a server name and return the host:port to connect to + Given the server_name (after any .well-known lookup), return the host, port and + the ssl server name + """ + if server_name[-1] == "]": # ipv6 literal (with no port) - return s, 8448 + return server_name, 8448, server_name - if ":" in s: - out = s.rsplit(":", 1) + if ":" in server_name: + # explicit port + out = server_name.rsplit(":", 1) try: port = int(out[1]) except ValueError: - raise ValueError("Invalid host:port '%s'" % s) - return out[0], port - - # try a .well-known lookup - if not skip_well_known: - well_known = MatrixConnectionAdapter.get_well_known(s) - if well_known: - return MatrixConnectionAdapter.lookup(well_known, skip_well_known=True) + raise ValueError("Invalid host:port '%s'" % (server_name,)) + return out[0], port, out[0] try: - srv = srvlookup.lookup("matrix", "tcp", s)[0] - return srv.host, srv.port + srv = srvlookup.lookup("matrix", "tcp", server_name)[0] + print( + f"SRV lookup on _matrix._tcp.{server_name} gave {srv}", + file=sys.stderr, + ) + return srv.host, srv.port, server_name except Exception: - return s, 8448 + return server_name, 8448, server_name @staticmethod - def get_well_known(server_name: str) -> Optional[str]: - uri = "https://%s/.well-known/matrix/server" % (server_name,) - print("fetching %s" % (uri,), file=sys.stderr) + def _get_well_known(server_name: str) -> Optional[str]: + if ":" in server_name: + # explicit port, or ipv6 literal. Either way, no .well-known + return None + + # TODO: check for ipv4 literals + + uri = f"https://{server_name}/.well-known/matrix/server" + print(f"fetching {uri}", file=sys.stderr) try: resp = requests.get(uri) @@ -304,19 +369,6 @@ class MatrixConnectionAdapter(HTTPAdapter): print("Invalid response from %s: %s" % (uri, e), file=sys.stderr) return None - def get_connection( - self, url: str, proxies: Optional[Dict[str, str]] = None - ) -> HTTPConnectionPool: - parsed = urlparse.urlparse(url) - - (host, port) = self.lookup(parsed.netloc) - netloc = "%s:%d" % (host, port) - print("Connecting to %s" % (netloc,), file=sys.stderr) - url = urlparse.urlunparse( - ("https", netloc, parsed.path, parsed.params, parsed.query, parsed.fragment) - ) - return super().get_connection(url, proxies) - if __name__ == "__main__": main() |