634 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			634 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			Python
		
	
	
| # -*- coding: utf-8 -*-
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| # Copyright 2015, 2016 OpenMarket Ltd
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| # Copyright 2017 Vector Creations Ltd
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| # Copyright 2018 New Vector 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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| import logging
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| 
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| from six.moves import http_client
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| 
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| import jinja2
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| 
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| from twisted.internet import defer
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| 
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| from synapse.api.constants import LoginType
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| from synapse.api.errors import Codes, SynapseError, ThreepidValidationError
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| from synapse.http.server import finish_request
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| from synapse.http.servlet import (
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|     RestServlet,
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|     assert_params_in_dict,
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|     parse_json_object_from_request,
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|     parse_string,
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| )
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| from synapse.util.msisdn import phone_number_to_msisdn
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| from synapse.util.stringutils import random_string
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| from synapse.util.threepids import check_3pid_allowed
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| 
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| from ._base import client_patterns, interactive_auth_handler
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| 
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| logger = logging.getLogger(__name__)
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| 
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| 
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| class EmailPasswordRequestTokenRestServlet(RestServlet):
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|     PATTERNS = client_patterns("/account/password/email/requestToken$")
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| 
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|     def __init__(self, hs):
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|         super(EmailPasswordRequestTokenRestServlet, self).__init__()
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|         self.hs = hs
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|         self.datastore = hs.get_datastore()
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|         self.config = hs.config
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|         self.identity_handler = hs.get_handlers().identity_handler
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| 
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|         if self.config.email_password_reset_behaviour == "local":
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|             from synapse.push.mailer import Mailer, load_jinja2_templates
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| 
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|             templates = load_jinja2_templates(
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|                 config=hs.config,
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|                 template_html_name=hs.config.email_password_reset_template_html,
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|                 template_text_name=hs.config.email_password_reset_template_text,
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|             )
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|             self.mailer = Mailer(
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|                 hs=self.hs,
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|                 app_name=self.config.email_app_name,
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|                 template_html=templates[0],
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|                 template_text=templates[1],
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|             )
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| 
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|     @defer.inlineCallbacks
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|     def on_POST(self, request):
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|         if self.config.email_password_reset_behaviour == "off":
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|             if self.config.password_resets_were_disabled_due_to_email_config:
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|                 logger.warn(
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|                     "User password resets have been disabled due to lack of email config"
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|                 )
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|             raise SynapseError(
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|                 400, "Email-based password resets have been disabled on this server"
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|             )
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| 
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|         body = parse_json_object_from_request(request)
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| 
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|         assert_params_in_dict(body, ["client_secret", "email", "send_attempt"])
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| 
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|         # Extract params from body
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|         client_secret = body["client_secret"]
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|         email = body["email"]
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|         send_attempt = body["send_attempt"]
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|         next_link = body.get("next_link")  # Optional param
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| 
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|         if not check_3pid_allowed(self.hs, "email", email):
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|             raise SynapseError(
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|                 403,
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|                 "Your email domain is not authorized on this server",
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|                 Codes.THREEPID_DENIED,
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|             )
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| 
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|         existingUid = yield self.hs.get_datastore().get_user_id_by_threepid(
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|             "email", email
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|         )
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| 
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|         if existingUid is None:
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|             raise SynapseError(400, "Email not found", Codes.THREEPID_NOT_FOUND)
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| 
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|         if self.config.email_password_reset_behaviour == "remote":
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|             if "id_server" not in body:
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|                 raise SynapseError(400, "Missing 'id_server' param in body")
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| 
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|             # Have the identity server handle the password reset flow
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|             ret = yield self.identity_handler.requestEmailToken(
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|                 body["id_server"], email, client_secret, send_attempt, next_link
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|             )
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|         else:
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|             # Send password reset emails from Synapse
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|             sid = yield self.send_password_reset(
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|                 email, client_secret, send_attempt, next_link
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|             )
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| 
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|             # Wrap the session id in a JSON object
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|             ret = {"sid": sid}
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| 
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|         defer.returnValue((200, ret))
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| 
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|     @defer.inlineCallbacks
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|     def send_password_reset(self, email, client_secret, send_attempt, next_link=None):
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|         """Send a password reset email
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| 
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|         Args:
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|             email (str): The user's email address
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|             client_secret (str): The provided client secret
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|             send_attempt (int): Which send attempt this is
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| 
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|         Returns:
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|             The new session_id upon success
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| 
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|         Raises:
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|             SynapseError is an error occurred when sending the email
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|         """
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|         # Check that this email/client_secret/send_attempt combo is new or
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|         # greater than what we've seen previously
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|         session = yield self.datastore.get_threepid_validation_session(
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|             "email", client_secret, address=email, validated=False
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|         )
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| 
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|         # Check to see if a session already exists and that it is not yet
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|         # marked as validated
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|         if session and session.get("validated_at") is None:
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|             session_id = session["session_id"]
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|             last_send_attempt = session["last_send_attempt"]
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| 
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|             # Check that the send_attempt is higher than previous attempts
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|             if send_attempt <= last_send_attempt:
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|                 # If not, just return a success without sending an email
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|                 defer.returnValue(session_id)
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|         else:
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|             # An non-validated session does not exist yet.
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|             # Generate a session id
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|             session_id = random_string(16)
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| 
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|         # Generate a new validation token
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|         token = random_string(32)
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| 
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|         # Send the mail with the link containing the token, client_secret
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|         # and session_id
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|         try:
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|             yield self.mailer.send_password_reset_mail(
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|                 email, token, client_secret, session_id
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|             )
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|         except Exception:
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|             logger.exception("Error sending a password reset email to %s", email)
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|             raise SynapseError(
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|                 500, "An error was encountered when sending the password reset email"
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|             )
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| 
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|         token_expires = (
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|             self.hs.clock.time_msec() + self.config.email_validation_token_lifetime
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|         )
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| 
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|         yield self.datastore.start_or_continue_validation_session(
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|             "email",
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|             email,
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|             session_id,
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|             client_secret,
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|             send_attempt,
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|             next_link,
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|             token,
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|             token_expires,
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|         )
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| 
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|         defer.returnValue(session_id)
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| 
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| 
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| class MsisdnPasswordRequestTokenRestServlet(RestServlet):
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|     PATTERNS = client_patterns("/account/password/msisdn/requestToken$")
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| 
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|     def __init__(self, hs):
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|         super(MsisdnPasswordRequestTokenRestServlet, self).__init__()
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|         self.hs = hs
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|         self.datastore = self.hs.get_datastore()
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|         self.identity_handler = hs.get_handlers().identity_handler
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| 
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|     @defer.inlineCallbacks
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|     def on_POST(self, request):
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|         body = parse_json_object_from_request(request)
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| 
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|         assert_params_in_dict(
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|             body,
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|             ["id_server", "client_secret", "country", "phone_number", "send_attempt"],
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|         )
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| 
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|         msisdn = phone_number_to_msisdn(body["country"], body["phone_number"])
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| 
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|         if not check_3pid_allowed(self.hs, "msisdn", msisdn):
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|             raise SynapseError(
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|                 403,
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|                 "Account phone numbers are not authorized on this server",
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|                 Codes.THREEPID_DENIED,
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|             )
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| 
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|         existingUid = yield self.datastore.get_user_id_by_threepid("msisdn", msisdn)
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| 
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|         if existingUid is None:
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|             raise SynapseError(400, "MSISDN not found", Codes.THREEPID_NOT_FOUND)
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| 
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|         ret = yield self.identity_handler.requestMsisdnToken(**body)
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|         defer.returnValue((200, ret))
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| 
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| 
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| class PasswordResetSubmitTokenServlet(RestServlet):
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|     """Handles 3PID validation token submission"""
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| 
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|     PATTERNS = client_patterns(
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|         "/password_reset/(?P<medium>[^/]*)/submit_token/*$", releases=(), unstable=True
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|     )
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| 
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|     def __init__(self, hs):
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|         """
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|         Args:
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|             hs (synapse.server.HomeServer): server
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|         """
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|         super(PasswordResetSubmitTokenServlet, self).__init__()
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|         self.hs = hs
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|         self.auth = hs.get_auth()
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|         self.config = hs.config
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|         self.clock = hs.get_clock()
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|         self.datastore = hs.get_datastore()
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| 
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|     @defer.inlineCallbacks
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|     def on_GET(self, request, medium):
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|         if medium != "email":
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|             raise SynapseError(
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|                 400, "This medium is currently not supported for password resets"
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|             )
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|         if self.config.email_password_reset_behaviour == "off":
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|             if self.config.password_resets_were_disabled_due_to_email_config:
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|                 logger.warn(
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|                     "User password resets have been disabled due to lack of email config"
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|                 )
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|             raise SynapseError(
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|                 400, "Email-based password resets have been disabled on this server"
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|             )
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| 
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|         sid = parse_string(request, "sid")
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|         client_secret = parse_string(request, "client_secret")
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|         token = parse_string(request, "token")
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| 
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|         # Attempt to validate a 3PID sesssion
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|         try:
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|             # Mark the session as valid
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|             next_link = yield self.datastore.validate_threepid_session(
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|                 sid, client_secret, token, self.clock.time_msec()
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|             )
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| 
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|             # Perform a 302 redirect if next_link is set
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|             if next_link:
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|                 if next_link.startswith("file:///"):
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|                     logger.warn(
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|                         "Not redirecting to next_link as it is a local file: address"
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|                     )
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|                 else:
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|                     request.setResponseCode(302)
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|                     request.setHeader("Location", next_link)
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|                     finish_request(request)
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|                     defer.returnValue(None)
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| 
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|             # Otherwise show the success template
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|             html = self.config.email_password_reset_success_html_content
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|             request.setResponseCode(200)
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|         except ThreepidValidationError as e:
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|             # Show a failure page with a reason
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|             html = self.load_jinja2_template(
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|                 self.config.email_template_dir,
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|                 self.config.email_password_reset_failure_template,
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|                 template_vars={"failure_reason": e.msg},
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|             )
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|             request.setResponseCode(e.code)
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| 
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|         request.write(html.encode("utf-8"))
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|         finish_request(request)
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|         defer.returnValue(None)
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| 
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|     def load_jinja2_template(self, template_dir, template_filename, template_vars):
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|         """Loads a jinja2 template with variables to insert
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| 
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|         Args:
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|             template_dir (str): The directory where templates are stored
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|             template_filename (str): The name of the template in the template_dir
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|             template_vars (Dict): Dictionary of keys in the template
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|                 alongside their values to insert
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| 
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|         Returns:
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|             str containing the contents of the rendered template
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|         """
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|         loader = jinja2.FileSystemLoader(template_dir)
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|         env = jinja2.Environment(loader=loader)
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| 
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|         template = env.get_template(template_filename)
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|         return template.render(**template_vars)
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| 
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|     @defer.inlineCallbacks
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|     def on_POST(self, request, medium):
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|         if medium != "email":
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|             raise SynapseError(
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|                 400, "This medium is currently not supported for password resets"
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|             )
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| 
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|         body = parse_json_object_from_request(request)
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|         assert_params_in_dict(body, ["sid", "client_secret", "token"])
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| 
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|         valid, _ = yield self.datastore.validate_threepid_validation_token(
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|             body["sid"], body["client_secret"], body["token"], self.clock.time_msec()
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|         )
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|         response_code = 200 if valid else 400
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| 
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|         defer.returnValue((response_code, {"success": valid}))
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| 
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| 
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| class PasswordRestServlet(RestServlet):
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|     PATTERNS = client_patterns("/account/password$")
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| 
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|     def __init__(self, hs):
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|         super(PasswordRestServlet, self).__init__()
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|         self.hs = hs
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|         self.auth = hs.get_auth()
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|         self.auth_handler = hs.get_auth_handler()
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|         self.datastore = self.hs.get_datastore()
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|         self._set_password_handler = hs.get_set_password_handler()
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| 
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|     @interactive_auth_handler
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|     @defer.inlineCallbacks
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|     def on_POST(self, request):
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|         body = parse_json_object_from_request(request)
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| 
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|         # there are two possibilities here. Either the user does not have an
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|         # access token, and needs to do a password reset; or they have one and
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|         # need to validate their identity.
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|         #
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|         # In the first case, we offer a couple of means of identifying
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|         # themselves (email and msisdn, though it's unclear if msisdn actually
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|         # works).
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|         #
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|         # In the second case, we require a password to confirm their identity.
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| 
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|         if self.auth.has_access_token(request):
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|             requester = yield self.auth.get_user_by_req(request)
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|             params = yield self.auth_handler.validate_user_via_ui_auth(
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|                 requester, body, self.hs.get_ip_from_request(request)
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|             )
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|             user_id = requester.user.to_string()
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|         else:
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|             requester = None
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|             result, params, _ = yield self.auth_handler.check_auth(
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|                 [[LoginType.EMAIL_IDENTITY], [LoginType.MSISDN]],
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|                 body,
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|                 self.hs.get_ip_from_request(request),
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|                 password_servlet=True,
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|             )
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| 
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|             if LoginType.EMAIL_IDENTITY in result:
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|                 threepid = result[LoginType.EMAIL_IDENTITY]
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|                 if "medium" not in threepid or "address" not in threepid:
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|                     raise SynapseError(500, "Malformed threepid")
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|                 if threepid["medium"] == "email":
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|                     # For emails, transform the address to lowercase.
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|                     # We store all email addreses as lowercase in the DB.
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|                     # (See add_threepid in synapse/handlers/auth.py)
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|                     threepid["address"] = threepid["address"].lower()
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|                 # if using email, we must know about the email they're authing with!
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|                 threepid_user_id = yield self.datastore.get_user_id_by_threepid(
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|                     threepid["medium"], threepid["address"]
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|                 )
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|                 if not threepid_user_id:
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|                     raise SynapseError(404, "Email address not found", Codes.NOT_FOUND)
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|                 user_id = threepid_user_id
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|             else:
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|                 logger.error("Auth succeeded but no known type! %r", result.keys())
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|                 raise SynapseError(500, "", Codes.UNKNOWN)
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| 
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|         assert_params_in_dict(params, ["new_password"])
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|         new_password = params["new_password"]
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| 
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|         yield self._set_password_handler.set_password(user_id, new_password, requester)
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| 
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|         defer.returnValue((200, {}))
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| 
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|     def on_OPTIONS(self, _):
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|         return 200, {}
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| 
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| 
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| class DeactivateAccountRestServlet(RestServlet):
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|     PATTERNS = client_patterns("/account/deactivate$")
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| 
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|     def __init__(self, hs):
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|         super(DeactivateAccountRestServlet, self).__init__()
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|         self.hs = hs
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|         self.auth = hs.get_auth()
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|         self.auth_handler = hs.get_auth_handler()
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|         self._deactivate_account_handler = hs.get_deactivate_account_handler()
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| 
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|     @interactive_auth_handler
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|     @defer.inlineCallbacks
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|     def on_POST(self, request):
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|         body = parse_json_object_from_request(request)
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|         erase = body.get("erase", False)
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|         if not isinstance(erase, bool):
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|             raise SynapseError(
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|                 http_client.BAD_REQUEST,
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|                 "Param 'erase' must be a boolean, if given",
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|                 Codes.BAD_JSON,
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|             )
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| 
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|         requester = yield self.auth.get_user_by_req(request)
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| 
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|         # allow ASes to dectivate their own users
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|         if requester.app_service:
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|             yield self._deactivate_account_handler.deactivate_account(
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|                 requester.user.to_string(), erase
 | |
|             )
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|             defer.returnValue((200, {}))
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| 
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|         yield self.auth_handler.validate_user_via_ui_auth(
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|             requester, body, self.hs.get_ip_from_request(request)
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|         )
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|         result = yield self._deactivate_account_handler.deactivate_account(
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|             requester.user.to_string(), erase, id_server=body.get("id_server")
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|         )
 | |
|         if result:
 | |
|             id_server_unbind_result = "success"
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|         else:
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|             id_server_unbind_result = "no-support"
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| 
 | |
|         defer.returnValue((200, {"id_server_unbind_result": id_server_unbind_result}))
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| 
 | |
| 
 | |
| class EmailThreepidRequestTokenRestServlet(RestServlet):
 | |
|     PATTERNS = client_patterns("/account/3pid/email/requestToken$")
 | |
| 
 | |
|     def __init__(self, hs):
 | |
|         self.hs = hs
 | |
|         super(EmailThreepidRequestTokenRestServlet, self).__init__()
 | |
|         self.identity_handler = hs.get_handlers().identity_handler
 | |
|         self.datastore = self.hs.get_datastore()
 | |
| 
 | |
|     @defer.inlineCallbacks
 | |
|     def on_POST(self, request):
 | |
|         body = parse_json_object_from_request(request)
 | |
|         assert_params_in_dict(
 | |
|             body, ["id_server", "client_secret", "email", "send_attempt"]
 | |
|         )
 | |
| 
 | |
|         if not check_3pid_allowed(self.hs, "email", body["email"]):
 | |
|             raise SynapseError(
 | |
|                 403,
 | |
|                 "Your email domain is not authorized on this server",
 | |
|                 Codes.THREEPID_DENIED,
 | |
|             )
 | |
| 
 | |
|         existingUid = yield self.datastore.get_user_id_by_threepid(
 | |
|             "email", body["email"]
 | |
|         )
 | |
| 
 | |
|         if existingUid is not None:
 | |
|             raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE)
 | |
| 
 | |
|         ret = yield self.identity_handler.requestEmailToken(**body)
 | |
|         defer.returnValue((200, ret))
 | |
| 
 | |
| 
 | |
| class MsisdnThreepidRequestTokenRestServlet(RestServlet):
 | |
|     PATTERNS = client_patterns("/account/3pid/msisdn/requestToken$")
 | |
| 
 | |
|     def __init__(self, hs):
 | |
|         self.hs = hs
 | |
|         super(MsisdnThreepidRequestTokenRestServlet, self).__init__()
 | |
|         self.identity_handler = hs.get_handlers().identity_handler
 | |
|         self.datastore = self.hs.get_datastore()
 | |
| 
 | |
|     @defer.inlineCallbacks
 | |
|     def on_POST(self, request):
 | |
|         body = parse_json_object_from_request(request)
 | |
|         assert_params_in_dict(
 | |
|             body,
 | |
|             ["id_server", "client_secret", "country", "phone_number", "send_attempt"],
 | |
|         )
 | |
| 
 | |
|         msisdn = phone_number_to_msisdn(body["country"], body["phone_number"])
 | |
| 
 | |
|         if not check_3pid_allowed(self.hs, "msisdn", msisdn):
 | |
|             raise SynapseError(
 | |
|                 403,
 | |
|                 "Account phone numbers are not authorized on this server",
 | |
|                 Codes.THREEPID_DENIED,
 | |
|             )
 | |
| 
 | |
|         existingUid = yield self.datastore.get_user_id_by_threepid("msisdn", msisdn)
 | |
| 
 | |
|         if existingUid is not None:
 | |
|             raise SynapseError(400, "MSISDN is already in use", Codes.THREEPID_IN_USE)
 | |
| 
 | |
|         ret = yield self.identity_handler.requestMsisdnToken(**body)
 | |
|         defer.returnValue((200, ret))
 | |
| 
 | |
| 
 | |
| class ThreepidRestServlet(RestServlet):
 | |
|     PATTERNS = client_patterns("/account/3pid$")
 | |
| 
 | |
|     def __init__(self, hs):
 | |
|         super(ThreepidRestServlet, self).__init__()
 | |
|         self.hs = hs
 | |
|         self.identity_handler = hs.get_handlers().identity_handler
 | |
|         self.auth = hs.get_auth()
 | |
|         self.auth_handler = hs.get_auth_handler()
 | |
|         self.datastore = self.hs.get_datastore()
 | |
| 
 | |
|     @defer.inlineCallbacks
 | |
|     def on_GET(self, request):
 | |
|         requester = yield self.auth.get_user_by_req(request)
 | |
| 
 | |
|         threepids = yield self.datastore.user_get_threepids(requester.user.to_string())
 | |
| 
 | |
|         defer.returnValue((200, {"threepids": threepids}))
 | |
| 
 | |
|     @defer.inlineCallbacks
 | |
|     def on_POST(self, request):
 | |
|         body = parse_json_object_from_request(request)
 | |
| 
 | |
|         threePidCreds = body.get("threePidCreds")
 | |
|         threePidCreds = body.get("three_pid_creds", threePidCreds)
 | |
|         if threePidCreds is None:
 | |
|             raise SynapseError(400, "Missing param", Codes.MISSING_PARAM)
 | |
| 
 | |
|         requester = yield self.auth.get_user_by_req(request)
 | |
|         user_id = requester.user.to_string()
 | |
| 
 | |
|         threepid = yield self.identity_handler.threepid_from_creds(threePidCreds)
 | |
| 
 | |
|         if not threepid:
 | |
|             raise SynapseError(400, "Failed to auth 3pid", Codes.THREEPID_AUTH_FAILED)
 | |
| 
 | |
|         for reqd in ["medium", "address", "validated_at"]:
 | |
|             if reqd not in threepid:
 | |
|                 logger.warn("Couldn't add 3pid: invalid response from ID server")
 | |
|                 raise SynapseError(500, "Invalid response from ID Server")
 | |
| 
 | |
|         yield self.auth_handler.add_threepid(
 | |
|             user_id, threepid["medium"], threepid["address"], threepid["validated_at"]
 | |
|         )
 | |
| 
 | |
|         if "bind" in body and body["bind"]:
 | |
|             logger.debug("Binding threepid %s to %s", threepid, user_id)
 | |
|             yield self.identity_handler.bind_threepid(threePidCreds, user_id)
 | |
| 
 | |
|         defer.returnValue((200, {}))
 | |
| 
 | |
| 
 | |
| class ThreepidDeleteRestServlet(RestServlet):
 | |
|     PATTERNS = client_patterns("/account/3pid/delete$")
 | |
| 
 | |
|     def __init__(self, hs):
 | |
|         super(ThreepidDeleteRestServlet, self).__init__()
 | |
|         self.auth = hs.get_auth()
 | |
|         self.auth_handler = hs.get_auth_handler()
 | |
| 
 | |
|     @defer.inlineCallbacks
 | |
|     def on_POST(self, request):
 | |
|         body = parse_json_object_from_request(request)
 | |
|         assert_params_in_dict(body, ["medium", "address"])
 | |
| 
 | |
|         requester = yield self.auth.get_user_by_req(request)
 | |
|         user_id = requester.user.to_string()
 | |
| 
 | |
|         try:
 | |
|             ret = yield self.auth_handler.delete_threepid(
 | |
|                 user_id, body["medium"], body["address"], body.get("id_server")
 | |
|             )
 | |
|         except Exception:
 | |
|             # NB. This endpoint should succeed if there is nothing to
 | |
|             # delete, so it should only throw if something is wrong
 | |
|             # that we ought to care about.
 | |
|             logger.exception("Failed to remove threepid")
 | |
|             raise SynapseError(500, "Failed to remove threepid")
 | |
| 
 | |
|         if ret:
 | |
|             id_server_unbind_result = "success"
 | |
|         else:
 | |
|             id_server_unbind_result = "no-support"
 | |
| 
 | |
|         defer.returnValue((200, {"id_server_unbind_result": id_server_unbind_result}))
 | |
| 
 | |
| 
 | |
| class WhoamiRestServlet(RestServlet):
 | |
|     PATTERNS = client_patterns("/account/whoami$")
 | |
| 
 | |
|     def __init__(self, hs):
 | |
|         super(WhoamiRestServlet, self).__init__()
 | |
|         self.auth = hs.get_auth()
 | |
| 
 | |
|     @defer.inlineCallbacks
 | |
|     def on_GET(self, request):
 | |
|         requester = yield self.auth.get_user_by_req(request)
 | |
| 
 | |
|         defer.returnValue((200, {"user_id": requester.user.to_string()}))
 | |
| 
 | |
| 
 | |
| def register_servlets(hs, http_server):
 | |
|     EmailPasswordRequestTokenRestServlet(hs).register(http_server)
 | |
|     MsisdnPasswordRequestTokenRestServlet(hs).register(http_server)
 | |
|     PasswordResetSubmitTokenServlet(hs).register(http_server)
 | |
|     PasswordRestServlet(hs).register(http_server)
 | |
|     DeactivateAccountRestServlet(hs).register(http_server)
 | |
|     EmailThreepidRequestTokenRestServlet(hs).register(http_server)
 | |
|     MsisdnThreepidRequestTokenRestServlet(hs).register(http_server)
 | |
|     ThreepidRestServlet(hs).register(http_server)
 | |
|     ThreepidDeleteRestServlet(hs).register(http_server)
 | |
|     WhoamiRestServlet(hs).register(http_server)
 |