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# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from http import HTTPStatus
from typing import TYPE_CHECKING, Tuple
from synapse.http.servlet import RestServlet, parse_string
from synapse.http.site import SynapseRequest
from synapse.rest.admin._base import admin_patterns, assert_requester_is_admin
from synapse.types import JsonDict
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
class UsernameAvailableRestServlet(RestServlet):
"""An admin API to check if a given username is available, regardless of whether registration is enabled.
Example:
GET /_synapse/admin/v1/username_available?username=foo
200 OK
{
"available": true
}
"""
PATTERNS = admin_patterns("/username_available")
def __init__(self, hs: "HomeServer"):
self.auth = hs.get_auth()
self.registration_handler = hs.get_registration_handler()
async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
await assert_requester_is_admin(self.auth, request)
username = parse_string(request, "username", required=True)
await self.registration_handler.check_username(username)
return HTTPStatus.OK, {"available": True}
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