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https://git.anonymousland.org/anonymousland/synapse-product.git
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1182ae5063
The `parse_enum` helper pulls an enum value from the query string (by delegating down to the parse_string helper with values generated from the enum). This is used to pull out "f" and "b" in most places and then we thread the resulting Direction enum throughout more code.
905 lines
25 KiB
Python
905 lines
25 KiB
Python
# Copyright 2014-2016 OpenMarket Ltd
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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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""" This module contains base REST classes for constructing REST servlets. """
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import enum
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import logging
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from http import HTTPStatus
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from typing import (
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TYPE_CHECKING,
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Iterable,
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List,
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Mapping,
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Optional,
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Sequence,
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Tuple,
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Type,
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TypeVar,
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overload,
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)
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from pydantic import BaseModel, MissingError, PydanticValueError, ValidationError
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from pydantic.error_wrappers import ErrorWrapper
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from typing_extensions import Literal
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from twisted.web.server import Request
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from synapse.api.errors import Codes, SynapseError
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from synapse.http import redact_uri
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from synapse.http.server import HttpServer
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from synapse.types import JsonDict, RoomAlias, RoomID
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from synapse.util import json_decoder
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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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@overload
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def parse_integer(request: Request, name: str, default: int) -> int:
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...
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@overload
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def parse_integer(request: Request, name: str, *, required: Literal[True]) -> int:
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...
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@overload
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def parse_integer(
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request: Request, name: str, default: Optional[int] = None, required: bool = False
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) -> Optional[int]:
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...
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def parse_integer(
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request: Request, name: str, default: Optional[int] = None, required: bool = False
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) -> Optional[int]:
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"""Parse an integer parameter from the request string
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Args:
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request: the twisted HTTP request.
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name: the name of the query parameter.
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default: value to use if the parameter is absent, defaults to None.
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required: whether to raise a 400 SynapseError if the parameter is absent,
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defaults to False.
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Returns:
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An int value or the default.
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Raises:
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SynapseError: if the parameter is absent and required, or if the
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parameter is present and not an integer.
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"""
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args: Mapping[bytes, Sequence[bytes]] = request.args # type: ignore
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return parse_integer_from_args(args, name, default, required)
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@overload
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def parse_integer_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Optional[int] = None,
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) -> Optional[int]:
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...
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@overload
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def parse_integer_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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*,
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required: Literal[True],
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) -> int:
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...
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@overload
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def parse_integer_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Optional[int] = None,
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required: bool = False,
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) -> Optional[int]:
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...
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def parse_integer_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Optional[int] = None,
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required: bool = False,
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) -> Optional[int]:
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"""Parse an integer parameter from the request string
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Args:
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args: A mapping of request args as bytes to a list of bytes (e.g. request.args).
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name: the name of the query parameter.
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default: value to use if the parameter is absent, defaults to None.
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required: whether to raise a 400 SynapseError if the parameter is absent,
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defaults to False.
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Returns:
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An int value or the default.
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Raises:
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SynapseError: if the parameter is absent and required, or if the
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parameter is present and not an integer.
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"""
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name_bytes = name.encode("ascii")
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if name_bytes in args:
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try:
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return int(args[name_bytes][0])
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except Exception:
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message = "Query parameter %r must be an integer" % (name,)
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raise SynapseError(
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HTTPStatus.BAD_REQUEST, message, errcode=Codes.INVALID_PARAM
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)
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else:
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if required:
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message = "Missing integer query parameter %r" % (name,)
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raise SynapseError(
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HTTPStatus.BAD_REQUEST, message, errcode=Codes.MISSING_PARAM
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)
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else:
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return default
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@overload
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def parse_boolean(request: Request, name: str, default: bool) -> bool:
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...
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@overload
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def parse_boolean(request: Request, name: str, *, required: Literal[True]) -> bool:
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...
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@overload
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def parse_boolean(
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request: Request, name: str, default: Optional[bool] = None, required: bool = False
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) -> Optional[bool]:
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...
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def parse_boolean(
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request: Request, name: str, default: Optional[bool] = None, required: bool = False
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) -> Optional[bool]:
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"""Parse a boolean parameter from the request query string
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Args:
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request: the twisted HTTP request.
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name: the name of the query parameter.
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default: value to use if the parameter is absent, defaults to None.
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required: whether to raise a 400 SynapseError if the parameter is absent,
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defaults to False.
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Returns:
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A bool value or the default.
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Raises:
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SynapseError: if the parameter is absent and required, or if the
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parameter is present and not one of "true" or "false".
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"""
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args: Mapping[bytes, Sequence[bytes]] = request.args # type: ignore
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return parse_boolean_from_args(args, name, default, required)
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@overload
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def parse_boolean_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: bool,
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) -> bool:
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...
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@overload
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def parse_boolean_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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*,
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required: Literal[True],
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) -> bool:
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...
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@overload
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def parse_boolean_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Optional[bool] = None,
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required: bool = False,
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) -> Optional[bool]:
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...
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def parse_boolean_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Optional[bool] = None,
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required: bool = False,
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) -> Optional[bool]:
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"""Parse a boolean parameter from the request query string
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Args:
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args: A mapping of request args as bytes to a list of bytes (e.g. request.args).
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name: the name of the query parameter.
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default: value to use if the parameter is absent, defaults to None.
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required: whether to raise a 400 SynapseError if the parameter is absent,
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defaults to False.
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Returns:
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A bool value or the default.
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Raises:
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SynapseError: if the parameter is absent and required, or if the
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parameter is present and not one of "true" or "false".
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"""
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name_bytes = name.encode("ascii")
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if name_bytes in args:
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try:
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return {b"true": True, b"false": False}[args[name_bytes][0]]
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except Exception:
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message = (
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"Boolean query parameter %r must be one of ['true', 'false']"
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) % (name,)
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raise SynapseError(
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HTTPStatus.BAD_REQUEST, message, errcode=Codes.INVALID_PARAM
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)
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else:
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if required:
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message = "Missing boolean query parameter %r" % (name,)
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raise SynapseError(
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HTTPStatus.BAD_REQUEST, message, errcode=Codes.MISSING_PARAM
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)
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else:
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return default
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@overload
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def parse_bytes_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Optional[bytes] = None,
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) -> Optional[bytes]:
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...
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@overload
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def parse_bytes_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Literal[None] = None,
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*,
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required: Literal[True],
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) -> bytes:
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...
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@overload
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def parse_bytes_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Optional[bytes] = None,
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required: bool = False,
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) -> Optional[bytes]:
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...
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def parse_bytes_from_args(
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args: Mapping[bytes, Sequence[bytes]],
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name: str,
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default: Optional[bytes] = None,
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required: bool = False,
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) -> Optional[bytes]:
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"""
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Parse a string parameter as bytes from the request query string.
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Args:
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args: A mapping of request args as bytes to a list of bytes (e.g. request.args).
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name: the name of the query parameter.
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default: value to use if the parameter is absent,
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defaults to None. Must be bytes if encoding is None.
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required: whether to raise a 400 SynapseError if the
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parameter is absent, defaults to False.
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Returns:
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Bytes or the default value.
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Raises:
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SynapseError if the parameter is absent and required.
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"""
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name_bytes = name.encode("ascii")
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if name_bytes in args:
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return args[name_bytes][0]
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elif required:
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message = "Missing string query parameter %s" % (name,)
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raise SynapseError(HTTPStatus.BAD_REQUEST, message, errcode=Codes.MISSING_PARAM)
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return default
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@overload
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def parse_string(
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request: Request,
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name: str,
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default: str,
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*,
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allowed_values: Optional[Iterable[str]] = None,
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encoding: str = "ascii",
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) -> str:
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...
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@overload
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def parse_string(
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request: Request,
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name: str,
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*,
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required: Literal[True],
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allowed_values: Optional[Iterable[str]] = None,
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encoding: str = "ascii",
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) -> str:
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...
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@overload
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def parse_string(
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request: Request,
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name: str,
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*,
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default: Optional[str] = None,
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required: bool = False,
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allowed_values: Optional[Iterable[str]] = None,
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encoding: str = "ascii",
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) -> Optional[str]:
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...
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def parse_string(
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request: Request,
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name: str,
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default: Optional[str] = None,
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required: bool = False,
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allowed_values: Optional[Iterable[str]] = None,
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encoding: str = "ascii",
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) -> Optional[str]:
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"""
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Parse a string parameter from the request query string.
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If encoding is not None, the content of the query param will be
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decoded to Unicode using the encoding, otherwise it will be encoded
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Args:
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request: the twisted HTTP request.
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name: the name of the query parameter.
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default: value to use if the parameter is absent, defaults to None.
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required: whether to raise a 400 SynapseError if the
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parameter is absent, defaults to False.
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allowed_values: List of allowed values for the
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string, or None if any value is allowed, defaults to None. Must be
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the same type as name, if given.
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encoding: The encoding to decode the string content with.
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Returns:
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A string value or the default.
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Raises:
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SynapseError if the parameter is absent and required, or if the
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parameter is present, must be one of a list of allowed values and
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is not one of those allowed values.
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"""
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args: Mapping[bytes, Sequence[bytes]] = request.args # type: ignore
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return parse_string_from_args(
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args,
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name,
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default,
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required=required,
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allowed_values=allowed_values,
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encoding=encoding,
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)
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EnumT = TypeVar("EnumT", bound=enum.Enum)
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@overload
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def parse_enum(
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request: Request,
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name: str,
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E: Type[EnumT],
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default: EnumT,
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) -> EnumT:
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...
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@overload
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def parse_enum(
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request: Request,
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name: str,
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E: Type[EnumT],
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*,
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required: Literal[True],
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) -> EnumT:
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...
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|
|
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def parse_enum(
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request: Request,
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name: str,
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E: Type[EnumT],
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default: Optional[EnumT] = None,
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required: bool = False,
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) -> Optional[EnumT]:
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"""
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Parse an enum parameter from the request query string.
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Note that the enum *must only have string values*.
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Args:
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request: the twisted HTTP request.
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name: the name of the query parameter.
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E: the enum which represents valid values
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default: enum value to use if the parameter is absent, defaults to None.
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required: whether to raise a 400 SynapseError if the
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parameter is absent, defaults to False.
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Returns:
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An enum value.
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Raises:
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SynapseError if the parameter is absent and required, or if the
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parameter is present, must be one of a list of allowed values and
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is not one of those allowed values.
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"""
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# Assert the enum values are strings.
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assert all(
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isinstance(e.value, str) for e in E
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), "parse_enum only works with string values"
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str_value = parse_string(
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request,
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name,
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default=default.value if default is not None else None,
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required=required,
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allowed_values=[e.value for e in E],
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)
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if str_value is None:
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return None
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return E(str_value)
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|
|
|
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def _parse_string_value(
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value: bytes,
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allowed_values: Optional[Iterable[str]],
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name: str,
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encoding: str,
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) -> str:
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try:
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value_str = value.decode(encoding)
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except ValueError:
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raise SynapseError(
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HTTPStatus.BAD_REQUEST, "Query parameter %r must be %s" % (name, encoding)
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)
|
|
|
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if allowed_values is not None and value_str not in allowed_values:
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message = "Query parameter %r must be one of [%s]" % (
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name,
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", ".join(repr(v) for v in allowed_values),
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)
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raise SynapseError(HTTPStatus.BAD_REQUEST, message, errcode=Codes.INVALID_PARAM)
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else:
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return value_str
|
|
|
|
|
|
@overload
|
|
def parse_strings_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
*,
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> Optional[List[str]]:
|
|
...
|
|
|
|
|
|
@overload
|
|
def parse_strings_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
default: List[str],
|
|
*,
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> List[str]:
|
|
...
|
|
|
|
|
|
@overload
|
|
def parse_strings_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
*,
|
|
required: Literal[True],
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> List[str]:
|
|
...
|
|
|
|
|
|
@overload
|
|
def parse_strings_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
default: Optional[List[str]] = None,
|
|
*,
|
|
required: bool = False,
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> Optional[List[str]]:
|
|
...
|
|
|
|
|
|
def parse_strings_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
default: Optional[List[str]] = None,
|
|
required: bool = False,
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> Optional[List[str]]:
|
|
"""
|
|
Parse a string parameter from the request query string list.
|
|
|
|
The content of the query param will be decoded to Unicode using the encoding.
|
|
|
|
Args:
|
|
args: A mapping of request args as bytes to a list of bytes (e.g. request.args).
|
|
name: the name of the query parameter.
|
|
default: value to use if the parameter is absent, defaults to None.
|
|
required: whether to raise a 400 SynapseError if the
|
|
parameter is absent, defaults to False.
|
|
allowed_values: List of allowed values for the
|
|
string, or None if any value is allowed, defaults to None.
|
|
encoding: The encoding to decode the string content with.
|
|
|
|
Returns:
|
|
A string value or the default.
|
|
|
|
Raises:
|
|
SynapseError if the parameter is absent and required, or if the
|
|
parameter is present, must be one of a list of allowed values and
|
|
is not one of those allowed values.
|
|
"""
|
|
name_bytes = name.encode("ascii")
|
|
|
|
if name_bytes in args:
|
|
values = args[name_bytes]
|
|
|
|
return [
|
|
_parse_string_value(value, allowed_values, name=name, encoding=encoding)
|
|
for value in values
|
|
]
|
|
else:
|
|
if required:
|
|
message = "Missing string query parameter %r" % (name,)
|
|
raise SynapseError(
|
|
HTTPStatus.BAD_REQUEST, message, errcode=Codes.MISSING_PARAM
|
|
)
|
|
|
|
return default
|
|
|
|
|
|
@overload
|
|
def parse_string_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
default: Optional[str] = None,
|
|
*,
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> Optional[str]:
|
|
...
|
|
|
|
|
|
@overload
|
|
def parse_string_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
default: Optional[str] = None,
|
|
*,
|
|
required: Literal[True],
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> str:
|
|
...
|
|
|
|
|
|
@overload
|
|
def parse_string_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
default: Optional[str] = None,
|
|
required: bool = False,
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> Optional[str]:
|
|
...
|
|
|
|
|
|
def parse_string_from_args(
|
|
args: Mapping[bytes, Sequence[bytes]],
|
|
name: str,
|
|
default: Optional[str] = None,
|
|
required: bool = False,
|
|
allowed_values: Optional[Iterable[str]] = None,
|
|
encoding: str = "ascii",
|
|
) -> Optional[str]:
|
|
"""
|
|
Parse the string parameter from the request query string list
|
|
and return the first result.
|
|
|
|
The content of the query param will be decoded to Unicode using the encoding.
|
|
|
|
Args:
|
|
args: A mapping of request args as bytes to a list of bytes (e.g. request.args).
|
|
name: the name of the query parameter.
|
|
default: value to use if the parameter is absent, defaults to None.
|
|
required: whether to raise a 400 SynapseError if the
|
|
parameter is absent, defaults to False.
|
|
allowed_values: List of allowed values for the
|
|
string, or None if any value is allowed, defaults to None. Must be
|
|
the same type as name, if given.
|
|
encoding: The encoding to decode the string content with.
|
|
|
|
Returns:
|
|
A string value or the default.
|
|
|
|
Raises:
|
|
SynapseError if the parameter is absent and required, or if the
|
|
parameter is present, must be one of a list of allowed values and
|
|
is not one of those allowed values.
|
|
"""
|
|
|
|
strings = parse_strings_from_args(
|
|
args,
|
|
name,
|
|
default=[default] if default is not None else None,
|
|
required=required,
|
|
allowed_values=allowed_values,
|
|
encoding=encoding,
|
|
)
|
|
|
|
if strings is None:
|
|
return None
|
|
|
|
return strings[0]
|
|
|
|
|
|
@overload
|
|
def parse_json_value_from_request(request: Request) -> JsonDict:
|
|
...
|
|
|
|
|
|
@overload
|
|
def parse_json_value_from_request(
|
|
request: Request, allow_empty_body: Literal[False]
|
|
) -> JsonDict:
|
|
...
|
|
|
|
|
|
@overload
|
|
def parse_json_value_from_request(
|
|
request: Request, allow_empty_body: bool = False
|
|
) -> Optional[JsonDict]:
|
|
...
|
|
|
|
|
|
def parse_json_value_from_request(
|
|
request: Request, allow_empty_body: bool = False
|
|
) -> Optional[JsonDict]:
|
|
"""Parse a JSON value from the body of a twisted HTTP request.
|
|
|
|
Args:
|
|
request: the twisted HTTP request.
|
|
allow_empty_body: if True, an empty body will be accepted and turned into None
|
|
|
|
Returns:
|
|
The JSON value.
|
|
|
|
Raises:
|
|
SynapseError if the request body couldn't be decoded as JSON.
|
|
"""
|
|
try:
|
|
content_bytes = request.content.read() # type: ignore
|
|
except Exception:
|
|
raise SynapseError(HTTPStatus.BAD_REQUEST, "Error reading JSON content.")
|
|
|
|
if not content_bytes and allow_empty_body:
|
|
return None
|
|
|
|
try:
|
|
content = json_decoder.decode(content_bytes.decode("utf-8"))
|
|
except Exception as e:
|
|
logger.warning(
|
|
"Unable to parse JSON from %s %s response: %s (%s)",
|
|
request.method.decode("ascii", errors="replace"),
|
|
redact_uri(request.uri.decode("ascii", errors="replace")),
|
|
e,
|
|
content_bytes,
|
|
)
|
|
raise SynapseError(
|
|
HTTPStatus.BAD_REQUEST, "Content not JSON.", errcode=Codes.NOT_JSON
|
|
)
|
|
|
|
return content
|
|
|
|
|
|
def parse_json_object_from_request(
|
|
request: Request, allow_empty_body: bool = False
|
|
) -> JsonDict:
|
|
"""Parse a JSON object from the body of a twisted HTTP request.
|
|
|
|
Args:
|
|
request: the twisted HTTP request.
|
|
allow_empty_body: if True, an empty body will be accepted and turned into
|
|
an empty dict.
|
|
|
|
Raises:
|
|
SynapseError if the request body couldn't be decoded as JSON or
|
|
if it wasn't a JSON object.
|
|
"""
|
|
content = parse_json_value_from_request(request, allow_empty_body=allow_empty_body)
|
|
|
|
if allow_empty_body and content is None:
|
|
return {}
|
|
|
|
if not isinstance(content, dict):
|
|
message = "Content must be a JSON object."
|
|
raise SynapseError(HTTPStatus.BAD_REQUEST, message, errcode=Codes.BAD_JSON)
|
|
|
|
return content
|
|
|
|
|
|
Model = TypeVar("Model", bound=BaseModel)
|
|
|
|
|
|
def parse_and_validate_json_object_from_request(
|
|
request: Request, model_type: Type[Model]
|
|
) -> Model:
|
|
"""Parse a JSON object from the body of a twisted HTTP request, then deserialise and
|
|
validate using the given pydantic model.
|
|
|
|
Raises:
|
|
SynapseError if the request body couldn't be decoded as JSON or
|
|
if it wasn't a JSON object.
|
|
"""
|
|
content = parse_json_object_from_request(request, allow_empty_body=False)
|
|
try:
|
|
instance = model_type.parse_obj(content)
|
|
except ValidationError as e:
|
|
# Choose a matrix error code. The catch-all is BAD_JSON, but we try to find a
|
|
# more specific error if possible (which occasionally helps us to be spec-
|
|
# compliant) This is a bit awkward because the spec's error codes aren't very
|
|
# clear-cut: BAD_JSON arguably overlaps with MISSING_PARAM and INVALID_PARAM.
|
|
errcode = Codes.BAD_JSON
|
|
|
|
raw_errors = e.raw_errors
|
|
if len(raw_errors) == 1 and isinstance(raw_errors[0], ErrorWrapper):
|
|
raw_error = raw_errors[0].exc
|
|
if isinstance(raw_error, MissingError):
|
|
errcode = Codes.MISSING_PARAM
|
|
elif isinstance(raw_error, PydanticValueError):
|
|
errcode = Codes.INVALID_PARAM
|
|
|
|
raise SynapseError(HTTPStatus.BAD_REQUEST, str(e), errcode=errcode)
|
|
|
|
return instance
|
|
|
|
|
|
def assert_params_in_dict(body: JsonDict, required: Iterable[str]) -> None:
|
|
absent = []
|
|
for k in required:
|
|
if k not in body:
|
|
absent.append(k)
|
|
|
|
if len(absent) > 0:
|
|
raise SynapseError(
|
|
HTTPStatus.BAD_REQUEST, "Missing params: %r" % absent, Codes.MISSING_PARAM
|
|
)
|
|
|
|
|
|
class RestServlet:
|
|
|
|
"""A Synapse REST Servlet.
|
|
|
|
An implementing class can either provide its own custom 'register' method,
|
|
or use the automatic pattern handling provided by the base class.
|
|
|
|
To use this latter, the implementing class instead provides a `PATTERN`
|
|
class attribute containing a pre-compiled regular expression. The automatic
|
|
register method will then use this method to register any of the following
|
|
instance methods associated with the corresponding HTTP method:
|
|
|
|
on_GET
|
|
on_PUT
|
|
on_POST
|
|
on_DELETE
|
|
|
|
Automatically handles turning CodeMessageExceptions thrown by these methods
|
|
into the appropriate HTTP response.
|
|
"""
|
|
|
|
def register(self, http_server: HttpServer) -> None:
|
|
"""Register this servlet with the given HTTP server."""
|
|
patterns = getattr(self, "PATTERNS", None)
|
|
if patterns:
|
|
for method in ("GET", "PUT", "POST", "DELETE"):
|
|
if hasattr(self, "on_%s" % (method,)):
|
|
servlet_classname = self.__class__.__name__
|
|
method_handler = getattr(self, "on_%s" % (method,))
|
|
http_server.register_paths(
|
|
method, patterns, method_handler, servlet_classname
|
|
)
|
|
|
|
else:
|
|
raise NotImplementedError("RestServlet must register something.")
|
|
|
|
|
|
class ResolveRoomIdMixin:
|
|
def __init__(self, hs: "HomeServer"):
|
|
self.room_member_handler = hs.get_room_member_handler()
|
|
|
|
async def resolve_room_id(
|
|
self, room_identifier: str, remote_room_hosts: Optional[List[str]] = None
|
|
) -> Tuple[str, Optional[List[str]]]:
|
|
"""
|
|
Resolve a room identifier to a room ID, if necessary.
|
|
|
|
This also performanes checks to ensure the room ID is of the proper form.
|
|
|
|
Args:
|
|
room_identifier: The room ID or alias.
|
|
remote_room_hosts: The potential remote room hosts to use.
|
|
|
|
Returns:
|
|
The resolved room ID.
|
|
|
|
Raises:
|
|
SynapseError if the room ID is of the wrong form.
|
|
"""
|
|
if RoomID.is_valid(room_identifier):
|
|
resolved_room_id = room_identifier
|
|
elif RoomAlias.is_valid(room_identifier):
|
|
room_alias = RoomAlias.from_string(room_identifier)
|
|
(
|
|
room_id,
|
|
remote_room_hosts,
|
|
) = await self.room_member_handler.lookup_room_alias(room_alias)
|
|
resolved_room_id = room_id.to_string()
|
|
else:
|
|
raise SynapseError(
|
|
HTTPStatus.BAD_REQUEST,
|
|
"%s was not legal room ID or room alias" % (room_identifier,),
|
|
)
|
|
if not resolved_room_id:
|
|
raise SynapseError(
|
|
HTTPStatus.BAD_REQUEST,
|
|
"Unknown room ID or room alias %s" % room_identifier,
|
|
)
|
|
return resolved_room_id, remote_room_hosts
|