text: # -*- coding: utf-8 -*-
  # Copyright 2019 New Vector 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.
  
  import logging
  
  from twisted.internet import defer
  
  from synapse.api.errors import AuthError, SynapseError
  from synapse.http.server import finish_request
  from synapse.http.servlet import RestServlet
  
  from ._base import client_patterns
  
  logger = logging.getLogger(__name__)
  
  
  class AccountValidityRenewServlet(RestServlet):
      PATTERNS = client_patterns("/account_validity/renew$")
      SUCCESS_HTML = (
          b"<html><body>Your account has been successfully renewed.</body><html>"
      )
  
      def __init__(self, hs):
          """
          Args:
              hs (synapse.server.HomeServer): server
          """
          super(AccountValidityRenewServlet, self).__init__()
  
          self.hs = hs
          self.account_activity_handler = hs.get_account_validity_handler()
          self.auth = hs.get_auth()
  
      @defer.inlineCallbacks
      def on_GET(self, request):
          if b"token" not in request.args:
              raise SynapseError(400, "Missing renewal token")
          renewal_token = request.args[b"token"][0]
  
          yield self.account_activity_handler.renew_account(renewal_token.decode("utf8"))
  
          request.setResponseCode(200)
          request.setHeader(b"Content-Type", b"text/html; charset=utf-8")
          request.setHeader(
              b"Content-Length", b"%d" % (len(AccountValidityRenewServlet.SUCCESS_HTML),)
          )
          request.write(AccountValidityRenewServlet.SUCCESS_HTML)
          finish_request(request)
          defer.returnValue(None)
  
  
  class AccountValiditySendMailServlet(RestServlet):
      PATTERNS = client_patterns("/account_validity/send_mail$")
  
      def __init__(self, hs):
          """
          Args:
              hs (synapse.server.HomeServer): server
          """
          super(AccountValiditySendMailServlet, self).__init__()
  
          self.hs = hs
          self.account_activity_handler = hs.get_account_validity_handler()
          self.auth = hs.get_auth()
          self.account_validity = self.hs.config.account_validity
  
      @defer.inlineCallbacks
      def on_POST(self, request):
          if not self.account_validity.renew_by_email_enabled:
              raise AuthError(
                  403, "Account renewal via email is disabled on this server."
              )
  
          requester = yield self.auth.get_user_by_req(request, allow_expired=True)
          user_id = requester.user.to_string()
          yield self.account_activity_handler.send_renewal_email_to_user(user_id)
  
          defer.returnValue((200, {}))
  
  
  def register_servlets(hs, http_server):
      AccountValidityRenewServlet(hs).register(http_server)
      AccountValiditySendMailServlet(hs).register(http_server)
  