synapse-product/synapse/rest/client/v2_alpha/account.py
Andrew Morgan 094896a69d
Add a config option for validating 'next_link' parameters against a domain whitelist (#8275)
This is a config option ported over from DINUM's Sydent: https://github.com/matrix-org/sydent/pull/285

They've switched to validating 3PIDs via Synapse rather than Sydent, and would like to retain this functionality.

This original purpose for this change is phishing prevention. This solution could also potentially be replaced by a similar one to https://github.com/matrix-org/synapse/pull/8004, but across all `*/submit_token` endpoint.

This option may still be useful to enterprise even with that safeguard in place though, if they want to be absolutely sure that their employees don't follow links to other domains.
2020-09-08 16:03:09 +01:00

954 lines
36 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2015, 2016 OpenMarket Ltd
# Copyright 2017 Vector Creations Ltd
# Copyright 2018 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
import random
from http import HTTPStatus
from typing import TYPE_CHECKING
from urllib.parse import urlparse
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
from synapse.api.constants import LoginType
from synapse.api.errors import (
Codes,
InteractiveAuthIncompleteError,
SynapseError,
ThreepidValidationError,
)
from synapse.config.emailconfig import ThreepidBehaviour
from synapse.http.server import finish_request, respond_with_html
from synapse.http.servlet import (
RestServlet,
assert_params_in_dict,
parse_json_object_from_request,
parse_string,
)
from synapse.push.mailer import Mailer
from synapse.util.msisdn import phone_number_to_msisdn
from synapse.util.stringutils import assert_valid_client_secret, random_string
from synapse.util.threepids import canonicalise_email, check_3pid_allowed
from ._base import client_patterns, interactive_auth_handler
logger = logging.getLogger(__name__)
class EmailPasswordRequestTokenRestServlet(RestServlet):
PATTERNS = client_patterns("/account/password/email/requestToken$")
def __init__(self, hs):
super(EmailPasswordRequestTokenRestServlet, self).__init__()
self.hs = hs
self.datastore = hs.get_datastore()
self.config = hs.config
self.identity_handler = hs.get_handlers().identity_handler
if self.config.threepid_behaviour_email == ThreepidBehaviour.LOCAL:
self.mailer = Mailer(
hs=self.hs,
app_name=self.config.email_app_name,
template_html=self.config.email_password_reset_template_html,
template_text=self.config.email_password_reset_template_text,
)
async def on_POST(self, request):
if self.config.threepid_behaviour_email == ThreepidBehaviour.OFF:
if self.config.local_threepid_handling_disabled_due_to_email_config:
logger.warning(
"User password resets have been disabled due to lack of email config"
)
raise SynapseError(
400, "Email-based password resets have been disabled on this server"
)
body = parse_json_object_from_request(request)
assert_params_in_dict(body, ["client_secret", "email", "send_attempt"])
# Extract params from body
client_secret = body["client_secret"]
assert_valid_client_secret(client_secret)
# Canonicalise the email address. The addresses are all stored canonicalised
# in the database. This allows the user to reset his password without having to
# know the exact spelling (eg. upper and lower case) of address in the database.
# Stored in the database "foo@bar.com"
# User requests with "FOO@bar.com" would raise a Not Found error
try:
email = canonicalise_email(body["email"])
except ValueError as e:
raise SynapseError(400, str(e))
send_attempt = body["send_attempt"]
next_link = body.get("next_link") # Optional param
if not check_3pid_allowed(self.hs, "email", email):
raise SynapseError(
403,
"Your email domain is not authorized on this server",
Codes.THREEPID_DENIED,
)
# Raise if the provided next_link value isn't valid
assert_valid_next_link(self.hs, next_link)
# The email will be sent to the stored address.
# This avoids a potential account hijack by requesting a password reset to
# an email address which is controlled by the attacker but which, after
# canonicalisation, matches the one in our database.
existing_user_id = await self.hs.get_datastore().get_user_id_by_threepid(
"email", email
)
if existing_user_id is None:
if self.config.request_token_inhibit_3pid_errors:
# Make the client think the operation succeeded. See the rationale in the
# comments for request_token_inhibit_3pid_errors.
# Also wait for some random amount of time between 100ms and 1s to make it
# look like we did something.
await self.hs.clock.sleep(random.randint(1, 10) / 10)
return 200, {"sid": random_string(16)}
raise SynapseError(400, "Email not found", Codes.THREEPID_NOT_FOUND)
if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE:
assert self.hs.config.account_threepid_delegate_email
# Have the configured identity server handle the request
ret = await self.identity_handler.requestEmailToken(
self.hs.config.account_threepid_delegate_email,
email,
client_secret,
send_attempt,
next_link,
)
else:
# Send password reset emails from Synapse
sid = await self.identity_handler.send_threepid_validation(
email,
client_secret,
send_attempt,
self.mailer.send_password_reset_mail,
next_link,
)
# Wrap the session id in a JSON object
ret = {"sid": sid}
return 200, ret
class PasswordResetSubmitTokenServlet(RestServlet):
"""Handles 3PID validation token submission"""
PATTERNS = client_patterns(
"/password_reset/(?P<medium>[^/]*)/submit_token$", releases=(), unstable=True
)
def __init__(self, hs):
"""
Args:
hs (synapse.server.HomeServer): server
"""
super(PasswordResetSubmitTokenServlet, self).__init__()
self.hs = hs
self.auth = hs.get_auth()
self.config = hs.config
self.clock = hs.get_clock()
self.store = hs.get_datastore()
if self.config.threepid_behaviour_email == ThreepidBehaviour.LOCAL:
self._failure_email_template = (
self.config.email_password_reset_template_failure_html
)
async def on_GET(self, request, medium):
# We currently only handle threepid token submissions for email
if medium != "email":
raise SynapseError(
400, "This medium is currently not supported for password resets"
)
if self.config.threepid_behaviour_email == ThreepidBehaviour.OFF:
if self.config.local_threepid_handling_disabled_due_to_email_config:
logger.warning(
"Password reset emails have been disabled due to lack of an email config"
)
raise SynapseError(
400, "Email-based password resets are disabled on this server"
)
sid = parse_string(request, "sid", required=True)
token = parse_string(request, "token", required=True)
client_secret = parse_string(request, "client_secret", required=True)
assert_valid_client_secret(client_secret)
# Attempt to validate a 3PID session
try:
# Mark the session as valid
next_link = await self.store.validate_threepid_session(
sid, client_secret, token, self.clock.time_msec()
)
# Perform a 302 redirect if next_link is set
if next_link:
if next_link.startswith("file:///"):
logger.warning(
"Not redirecting to next_link as it is a local file: address"
)
else:
request.setResponseCode(302)
request.setHeader("Location", next_link)
finish_request(request)
return None
# Otherwise show the success template
html = self.config.email_password_reset_template_success_html_content
status_code = 200
except ThreepidValidationError as e:
status_code = e.code
# Show a failure page with a reason
template_vars = {"failure_reason": e.msg}
html = self._failure_email_template.render(**template_vars)
respond_with_html(request, status_code, html)
class PasswordRestServlet(RestServlet):
PATTERNS = client_patterns("/account/password$")
def __init__(self, hs):
super(PasswordRestServlet, self).__init__()
self.hs = hs
self.auth = hs.get_auth()
self.auth_handler = hs.get_auth_handler()
self.datastore = self.hs.get_datastore()
self.password_policy_handler = hs.get_password_policy_handler()
self._set_password_handler = hs.get_set_password_handler()
@interactive_auth_handler
async def on_POST(self, request):
body = parse_json_object_from_request(request)
# we do basic sanity checks here because the auth layer will store these
# in sessions. Pull out the new password provided to us.
new_password = body.pop("new_password", None)
if new_password is not None:
if not isinstance(new_password, str) or len(new_password) > 512:
raise SynapseError(400, "Invalid password")
self.password_policy_handler.validate_password(new_password)
# there are two possibilities here. Either the user does not have an
# access token, and needs to do a password reset; or they have one and
# need to validate their identity.
#
# In the first case, we offer a couple of means of identifying
# themselves (email and msisdn, though it's unclear if msisdn actually
# works).
#
# In the second case, we require a password to confirm their identity.
if self.auth.has_access_token(request):
requester = await self.auth.get_user_by_req(request)
try:
params, session_id = await self.auth_handler.validate_user_via_ui_auth(
requester,
request,
body,
self.hs.get_ip_from_request(request),
"modify your account password",
)
except InteractiveAuthIncompleteError as e:
# The user needs to provide more steps to complete auth, but
# they're not required to provide the password again.
#
# If a password is available now, hash the provided password and
# store it for later.
if new_password:
password_hash = await self.auth_handler.hash(new_password)
await self.auth_handler.set_session_data(
e.session_id, "password_hash", password_hash
)
raise
user_id = requester.user.to_string()
else:
requester = None
try:
result, params, session_id = await self.auth_handler.check_ui_auth(
[[LoginType.EMAIL_IDENTITY]],
request,
body,
self.hs.get_ip_from_request(request),
"modify your account password",
)
except InteractiveAuthIncompleteError as e:
# The user needs to provide more steps to complete auth, but
# they're not required to provide the password again.
#
# If a password is available now, hash the provided password and
# store it for later.
if new_password:
password_hash = await self.auth_handler.hash(new_password)
await self.auth_handler.set_session_data(
e.session_id, "password_hash", password_hash
)
raise
if LoginType.EMAIL_IDENTITY in result:
threepid = result[LoginType.EMAIL_IDENTITY]
if "medium" not in threepid or "address" not in threepid:
raise SynapseError(500, "Malformed threepid")
if threepid["medium"] == "email":
# For emails, canonicalise the address.
# We store all email addresses canonicalised in the DB.
# (See add_threepid in synapse/handlers/auth.py)
try:
threepid["address"] = canonicalise_email(threepid["address"])
except ValueError as e:
raise SynapseError(400, str(e))
# if using email, we must know about the email they're authing with!
threepid_user_id = await self.datastore.get_user_id_by_threepid(
threepid["medium"], threepid["address"]
)
if not threepid_user_id:
raise SynapseError(404, "Email address not found", Codes.NOT_FOUND)
user_id = threepid_user_id
else:
logger.error("Auth succeeded but no known type! %r", result.keys())
raise SynapseError(500, "", Codes.UNKNOWN)
# If we have a password in this request, prefer it. Otherwise, there
# must be a password hash from an earlier request.
if new_password:
password_hash = await self.auth_handler.hash(new_password)
else:
password_hash = await self.auth_handler.get_session_data(
session_id, "password_hash", None
)
if not password_hash:
raise SynapseError(400, "Missing params: password", Codes.MISSING_PARAM)
logout_devices = params.get("logout_devices", True)
await self._set_password_handler.set_password(
user_id, password_hash, logout_devices, requester
)
return 200, {}
def on_OPTIONS(self, _):
return 200, {}
class DeactivateAccountRestServlet(RestServlet):
PATTERNS = client_patterns("/account/deactivate$")
def __init__(self, hs):
super(DeactivateAccountRestServlet, self).__init__()
self.hs = hs
self.auth = hs.get_auth()
self.auth_handler = hs.get_auth_handler()
self._deactivate_account_handler = hs.get_deactivate_account_handler()
@interactive_auth_handler
async def on_POST(self, request):
body = parse_json_object_from_request(request)
erase = body.get("erase", False)
if not isinstance(erase, bool):
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"Param 'erase' must be a boolean, if given",
Codes.BAD_JSON,
)
requester = await self.auth.get_user_by_req(request)
# allow ASes to dectivate their own users
if requester.app_service:
await self._deactivate_account_handler.deactivate_account(
requester.user.to_string(), erase
)
return 200, {}
await self.auth_handler.validate_user_via_ui_auth(
requester,
request,
body,
self.hs.get_ip_from_request(request),
"deactivate your account",
)
result = await self._deactivate_account_handler.deactivate_account(
requester.user.to_string(), erase, id_server=body.get("id_server")
)
if result:
id_server_unbind_result = "success"
else:
id_server_unbind_result = "no-support"
return 200, {"id_server_unbind_result": id_server_unbind_result}
class EmailThreepidRequestTokenRestServlet(RestServlet):
PATTERNS = client_patterns("/account/3pid/email/requestToken$")
def __init__(self, hs):
super(EmailThreepidRequestTokenRestServlet, self).__init__()
self.hs = hs
self.config = hs.config
self.identity_handler = hs.get_handlers().identity_handler
self.store = self.hs.get_datastore()
if self.config.threepid_behaviour_email == ThreepidBehaviour.LOCAL:
self.mailer = Mailer(
hs=self.hs,
app_name=self.config.email_app_name,
template_html=self.config.email_add_threepid_template_html,
template_text=self.config.email_add_threepid_template_text,
)
async def on_POST(self, request):
if self.config.threepid_behaviour_email == ThreepidBehaviour.OFF:
if self.config.local_threepid_handling_disabled_due_to_email_config:
logger.warning(
"Adding emails have been disabled due to lack of an email config"
)
raise SynapseError(
400, "Adding an email to your account is disabled on this server"
)
body = parse_json_object_from_request(request)
assert_params_in_dict(body, ["client_secret", "email", "send_attempt"])
client_secret = body["client_secret"]
assert_valid_client_secret(client_secret)
# Canonicalise the email address. The addresses are all stored canonicalised
# in the database.
# This ensures that the validation email is sent to the canonicalised address
# as it will later be entered into the database.
# Otherwise the email will be sent to "FOO@bar.com" and stored as
# "foo@bar.com" in database.
try:
email = canonicalise_email(body["email"])
except ValueError as e:
raise SynapseError(400, str(e))
send_attempt = body["send_attempt"]
next_link = body.get("next_link") # Optional param
if not check_3pid_allowed(self.hs, "email", email):
raise SynapseError(
403,
"Your email domain is not authorized on this server",
Codes.THREEPID_DENIED,
)
# Raise if the provided next_link value isn't valid
assert_valid_next_link(self.hs, next_link)
existing_user_id = await self.store.get_user_id_by_threepid("email", email)
if existing_user_id is not None:
if self.config.request_token_inhibit_3pid_errors:
# Make the client think the operation succeeded. See the rationale in the
# comments for request_token_inhibit_3pid_errors.
# Also wait for some random amount of time between 100ms and 1s to make it
# look like we did something.
await self.hs.clock.sleep(random.randint(1, 10) / 10)
return 200, {"sid": random_string(16)}
raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE)
if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE:
assert self.hs.config.account_threepid_delegate_email
# Have the configured identity server handle the request
ret = await self.identity_handler.requestEmailToken(
self.hs.config.account_threepid_delegate_email,
email,
client_secret,
send_attempt,
next_link,
)
else:
# Send threepid validation emails from Synapse
sid = await self.identity_handler.send_threepid_validation(
email,
client_secret,
send_attempt,
self.mailer.send_add_threepid_mail,
next_link,
)
# Wrap the session id in a JSON object
ret = {"sid": sid}
return 200, ret
class MsisdnThreepidRequestTokenRestServlet(RestServlet):
PATTERNS = client_patterns("/account/3pid/msisdn/requestToken$")
def __init__(self, hs):
self.hs = hs
super(MsisdnThreepidRequestTokenRestServlet, self).__init__()
self.store = self.hs.get_datastore()
self.identity_handler = hs.get_handlers().identity_handler
async def on_POST(self, request):
body = parse_json_object_from_request(request)
assert_params_in_dict(
body, ["client_secret", "country", "phone_number", "send_attempt"]
)
client_secret = body["client_secret"]
assert_valid_client_secret(client_secret)
country = body["country"]
phone_number = body["phone_number"]
send_attempt = body["send_attempt"]
next_link = body.get("next_link") # Optional param
msisdn = phone_number_to_msisdn(country, 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,
)
# Raise if the provided next_link value isn't valid
assert_valid_next_link(self.hs, next_link)
existing_user_id = await self.store.get_user_id_by_threepid("msisdn", msisdn)
if existing_user_id is not None:
if self.hs.config.request_token_inhibit_3pid_errors:
# Make the client think the operation succeeded. See the rationale in the
# comments for request_token_inhibit_3pid_errors.
# Also wait for some random amount of time between 100ms and 1s to make it
# look like we did something.
await self.hs.clock.sleep(random.randint(1, 10) / 10)
return 200, {"sid": random_string(16)}
raise SynapseError(400, "MSISDN is already in use", Codes.THREEPID_IN_USE)
if not self.hs.config.account_threepid_delegate_msisdn:
logger.warning(
"No upstream msisdn account_threepid_delegate configured on the server to "
"handle this request"
)
raise SynapseError(
400,
"Adding phone numbers to user account is not supported by this homeserver",
)
ret = await self.identity_handler.requestMsisdnToken(
self.hs.config.account_threepid_delegate_msisdn,
country,
phone_number,
client_secret,
send_attempt,
next_link,
)
return 200, ret
class AddThreepidEmailSubmitTokenServlet(RestServlet):
"""Handles 3PID validation token submission for adding an email to a user's account"""
PATTERNS = client_patterns(
"/add_threepid/email/submit_token$", releases=(), unstable=True
)
def __init__(self, hs):
"""
Args:
hs (synapse.server.HomeServer): server
"""
super().__init__()
self.config = hs.config
self.clock = hs.get_clock()
self.store = hs.get_datastore()
if self.config.threepid_behaviour_email == ThreepidBehaviour.LOCAL:
self._failure_email_template = (
self.config.email_add_threepid_template_failure_html
)
async def on_GET(self, request):
if self.config.threepid_behaviour_email == ThreepidBehaviour.OFF:
if self.config.local_threepid_handling_disabled_due_to_email_config:
logger.warning(
"Adding emails have been disabled due to lack of an email config"
)
raise SynapseError(
400, "Adding an email to your account is disabled on this server"
)
elif self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE:
raise SynapseError(
400,
"This homeserver is not validating threepids. Use an identity server "
"instead.",
)
sid = parse_string(request, "sid", required=True)
token = parse_string(request, "token", required=True)
client_secret = parse_string(request, "client_secret", required=True)
assert_valid_client_secret(client_secret)
# Attempt to validate a 3PID session
try:
# Mark the session as valid
next_link = await self.store.validate_threepid_session(
sid, client_secret, token, self.clock.time_msec()
)
# Perform a 302 redirect if next_link is set
if next_link:
request.setResponseCode(302)
request.setHeader("Location", next_link)
finish_request(request)
return None
# Otherwise show the success template
html = self.config.email_add_threepid_template_success_html_content
status_code = 200
except ThreepidValidationError as e:
status_code = e.code
# Show a failure page with a reason
template_vars = {"failure_reason": e.msg}
html = self._failure_email_template.render(**template_vars)
respond_with_html(request, status_code, html)
class AddThreepidMsisdnSubmitTokenServlet(RestServlet):
"""Handles 3PID validation token submission for adding a phone number to a user's
account
"""
PATTERNS = client_patterns(
"/add_threepid/msisdn/submit_token$", releases=(), unstable=True
)
def __init__(self, hs):
"""
Args:
hs (synapse.server.HomeServer): server
"""
super().__init__()
self.config = hs.config
self.clock = hs.get_clock()
self.store = hs.get_datastore()
self.identity_handler = hs.get_handlers().identity_handler
async def on_POST(self, request):
if not self.config.account_threepid_delegate_msisdn:
raise SynapseError(
400,
"This homeserver is not validating phone numbers. Use an identity server "
"instead.",
)
body = parse_json_object_from_request(request)
assert_params_in_dict(body, ["client_secret", "sid", "token"])
assert_valid_client_secret(body["client_secret"])
# Proxy submit_token request to msisdn threepid delegate
response = await self.identity_handler.proxy_msisdn_submit_token(
self.config.account_threepid_delegate_msisdn,
body["client_secret"],
body["sid"],
body["token"],
)
return 200, response
class ThreepidRestServlet(RestServlet):
PATTERNS = client_patterns("/account/3pid$")
def __init__(self, hs):
super(ThreepidRestServlet, self).__init__()
self.hs = hs
self.identity_handler = hs.get_handlers().identity_handler
self.auth = hs.get_auth()
self.auth_handler = hs.get_auth_handler()
self.datastore = self.hs.get_datastore()
async def on_GET(self, request):
requester = await self.auth.get_user_by_req(request)
threepids = await self.datastore.user_get_threepids(requester.user.to_string())
return 200, {"threepids": threepids}
async def on_POST(self, request):
if not self.hs.config.enable_3pid_changes:
raise SynapseError(
400, "3PID changes are disabled on this server", Codes.FORBIDDEN
)
requester = await self.auth.get_user_by_req(request)
user_id = requester.user.to_string()
body = parse_json_object_from_request(request)
threepid_creds = body.get("threePidCreds") or body.get("three_pid_creds")
if threepid_creds is None:
raise SynapseError(
400, "Missing param three_pid_creds", Codes.MISSING_PARAM
)
assert_params_in_dict(threepid_creds, ["client_secret", "sid"])
sid = threepid_creds["sid"]
client_secret = threepid_creds["client_secret"]
assert_valid_client_secret(client_secret)
validation_session = await self.identity_handler.validate_threepid_session(
client_secret, sid
)
if validation_session:
await self.auth_handler.add_threepid(
user_id,
validation_session["medium"],
validation_session["address"],
validation_session["validated_at"],
)
return 200, {}
raise SynapseError(
400, "No validated 3pid session found", Codes.THREEPID_AUTH_FAILED
)
class ThreepidAddRestServlet(RestServlet):
PATTERNS = client_patterns("/account/3pid/add$")
def __init__(self, hs):
super(ThreepidAddRestServlet, 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()
@interactive_auth_handler
async def on_POST(self, request):
if not self.hs.config.enable_3pid_changes:
raise SynapseError(
400, "3PID changes are disabled on this server", Codes.FORBIDDEN
)
requester = await self.auth.get_user_by_req(request)
user_id = requester.user.to_string()
body = parse_json_object_from_request(request)
assert_params_in_dict(body, ["client_secret", "sid"])
sid = body["sid"]
client_secret = body["client_secret"]
assert_valid_client_secret(client_secret)
await self.auth_handler.validate_user_via_ui_auth(
requester,
request,
body,
self.hs.get_ip_from_request(request),
"add a third-party identifier to your account",
)
validation_session = await self.identity_handler.validate_threepid_session(
client_secret, sid
)
if validation_session:
await self.auth_handler.add_threepid(
user_id,
validation_session["medium"],
validation_session["address"],
validation_session["validated_at"],
)
return 200, {}
raise SynapseError(
400, "No validated 3pid session found", Codes.THREEPID_AUTH_FAILED
)
class ThreepidBindRestServlet(RestServlet):
PATTERNS = client_patterns("/account/3pid/bind$")
def __init__(self, hs):
super(ThreepidBindRestServlet, self).__init__()
self.hs = hs
self.identity_handler = hs.get_handlers().identity_handler
self.auth = hs.get_auth()
async def on_POST(self, request):
body = parse_json_object_from_request(request)
assert_params_in_dict(body, ["id_server", "sid", "client_secret"])
id_server = body["id_server"]
sid = body["sid"]
id_access_token = body.get("id_access_token") # optional
client_secret = body["client_secret"]
assert_valid_client_secret(client_secret)
requester = await self.auth.get_user_by_req(request)
user_id = requester.user.to_string()
await self.identity_handler.bind_threepid(
client_secret, sid, user_id, id_server, id_access_token
)
return 200, {}
class ThreepidUnbindRestServlet(RestServlet):
PATTERNS = client_patterns("/account/3pid/unbind$")
def __init__(self, hs):
super(ThreepidUnbindRestServlet, self).__init__()
self.hs = hs
self.identity_handler = hs.get_handlers().identity_handler
self.auth = hs.get_auth()
self.datastore = self.hs.get_datastore()
async def on_POST(self, request):
"""Unbind the given 3pid from a specific identity server, or identity servers that are
known to have this 3pid bound
"""
requester = await self.auth.get_user_by_req(request)
body = parse_json_object_from_request(request)
assert_params_in_dict(body, ["medium", "address"])
medium = body.get("medium")
address = body.get("address")
id_server = body.get("id_server")
# Attempt to unbind the threepid from an identity server. If id_server is None, try to
# unbind from all identity servers this threepid has been added to in the past
result = await self.identity_handler.try_unbind_threepid(
requester.user.to_string(),
{"address": address, "medium": medium, "id_server": id_server},
)
return 200, {"id_server_unbind_result": "success" if result else "no-support"}
class ThreepidDeleteRestServlet(RestServlet):
PATTERNS = client_patterns("/account/3pid/delete$")
def __init__(self, hs):
super(ThreepidDeleteRestServlet, self).__init__()
self.hs = hs
self.auth = hs.get_auth()
self.auth_handler = hs.get_auth_handler()
async def on_POST(self, request):
if not self.hs.config.enable_3pid_changes:
raise SynapseError(
400, "3PID changes are disabled on this server", Codes.FORBIDDEN
)
body = parse_json_object_from_request(request)
assert_params_in_dict(body, ["medium", "address"])
requester = await self.auth.get_user_by_req(request)
user_id = requester.user.to_string()
try:
ret = await 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"
return 200, {"id_server_unbind_result": id_server_unbind_result}
def assert_valid_next_link(hs: "HomeServer", next_link: str):
"""
Raises a SynapseError if a given next_link value is invalid
next_link is valid if the scheme is http(s) and the next_link.domain_whitelist config
option is either empty or contains a domain that matches the one in the given next_link
Args:
hs: The homeserver object
next_link: The next_link value given by the client
Raises:
SynapseError: If the next_link is invalid
"""
valid = True
# Parse the contents of the URL
next_link_parsed = urlparse(next_link)
# Scheme must not point to the local drive
if next_link_parsed.scheme == "file":
valid = False
# If the domain whitelist is set, the domain must be in it
if (
valid
and hs.config.next_link_domain_whitelist is not None
and next_link_parsed.hostname not in hs.config.next_link_domain_whitelist
):
valid = False
if not valid:
raise SynapseError(
400,
"'next_link' domain not included in whitelist, or not http(s)",
errcode=Codes.INVALID_PARAM,
)
class WhoamiRestServlet(RestServlet):
PATTERNS = client_patterns("/account/whoami$")
def __init__(self, hs):
super(WhoamiRestServlet, self).__init__()
self.auth = hs.get_auth()
async def on_GET(self, request):
requester = await self.auth.get_user_by_req(request)
return 200, {"user_id": requester.user.to_string()}
def register_servlets(hs, http_server):
EmailPasswordRequestTokenRestServlet(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)
AddThreepidEmailSubmitTokenServlet(hs).register(http_server)
AddThreepidMsisdnSubmitTokenServlet(hs).register(http_server)
ThreepidRestServlet(hs).register(http_server)
ThreepidAddRestServlet(hs).register(http_server)
ThreepidBindRestServlet(hs).register(http_server)
ThreepidUnbindRestServlet(hs).register(http_server)
ThreepidDeleteRestServlet(hs).register(http_server)
WhoamiRestServlet(hs).register(http_server)