text: # Copyright 2014 OpenMarket Ltd
  #
  # 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.
  
  from typing import TYPE_CHECKING
  
  from twisted.web.resource import Resource
  from twisted.web.server import Request
  from unpaddedbase64 import encode_base64
  
  from sydent.db.invite_tokens import JoinTokenStore
  from sydent.http.servlets import get_args, jsonwrap
  from sydent.types import JsonDict
  
  if TYPE_CHECKING:
      from sydent.sydent import Sydent
  
  
  class Ed25519Servlet(Resource):
      isLeaf = True
  
      def __init__(self, syd: "Sydent") -> None:
          self.sydent = syd
  
      @jsonwrap
      def render_GET(self, request: Request) -> JsonDict:
          pubKey = self.sydent.keyring.ed25519.verify_key
          pubKeyBase64 = encode_base64(pubKey.encode())
  
          return {"public_key": pubKeyBase64}
  
  
  class PubkeyIsValidServlet(Resource):
      isLeaf = True
  
      def __init__(self, syd: "Sydent") -> None:
          self.sydent = syd
  
      @jsonwrap
      def render_GET(self, request: Request) -> JsonDict:
          args = get_args(request, ("public_key",))
  
          pubKey = self.sydent.keyring.ed25519.verify_key
          pubKeyBase64 = encode_base64(pubKey.encode())
  
          return {"valid": args["public_key"] == pubKeyBase64}
  
  
  class EphemeralPubkeyIsValidServlet(Resource):
      isLeaf = True
  
      def __init__(self, syd: "Sydent") -> None:
          self.joinTokenStore = JoinTokenStore(syd)
  
      @jsonwrap
      def render_GET(self, request: Request) -> JsonDict:
          args = get_args(request, ("public_key",))
          publicKey = args["public_key"]
  
          return {
              "valid": self.joinTokenStore.validateEphemeralPublicKey(publicKey),
          }
  