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Properly report user-agent/IP during registration of SSO users. (#8784) 

This also expands type-hints to the SSO and registration code.

Refactors the CAS code to more closely match OIDC/SAML.
This commit is contained in:
Patrick Cloke 2020-11-23 13:28:03 -05:00 committed by GitHub
parent 7127855741
commit 6fde6aa9c0
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6 changed files with 173 additions and 122 deletions
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1
changelog.d/8784.misc Normal file
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@ -0,0 +1 @@
Fix a bug introduced in v1.20.0 where the user-agent and IP address reported during user registration for CAS, OpenID Connect, and SAML were of the wrong form.

1
mypy.ini
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@ -37,6 +37,7 @@ files =
synapse/handlers/presence.py,
synapse/handlers/profile.py,
synapse/handlers/read_marker.py,
synapse/handlers/register.py,
synapse/handlers/room.py,
synapse/handlers/room_member.py,
synapse/handlers/room_member_worker.py,

71
synapse/handlers/cas_handler.py
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@ -14,7 +14,7 @@
# limitations under the License.
import logging
import urllib
from typing import Dict, Optional, Tuple
from typing import TYPE_CHECKING, Dict, Optional, Tuple
from xml.etree import ElementTree as ET
from twisted.web.client import PartialDownloadError
@ -23,6 +23,9 @@ from synapse.api.errors import Codes, LoginError
from synapse.http.site import SynapseRequest
from synapse.types import UserID, map_username_to_mxid_localpart
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
logger = logging.getLogger(__name__)
@ -31,10 +34,10 @@ class CasHandler:
Utility class for to handle the response from a CAS SSO service.
Args:
hs (synapse.server.HomeServer)
hs
"""
def __init__(self, hs):
def __init__(self, hs: "HomeServer"):
self.hs = hs
self._hostname = hs.hostname
self._auth_handler = hs.get_auth_handler()
@ -200,27 +203,57 @@ class CasHandler:
args["session"] = session
username, user_display_name = await self._validate_ticket(ticket, args)
localpart = map_username_to_mxid_localpart(username)
user_id = UserID(localpart, self._hostname).to_string()
registered_user_id = await self._auth_handler.check_user_exists(user_id)
# Pull out the user-agent and IP from the request.
user_agent = request.get_user_agent("")
ip_address = self.hs.get_ip_from_request(request)
# Get the matrix ID from the CAS username.
user_id = await self._map_cas_user_to_matrix_user(
username, user_display_name, user_agent, ip_address
)
if session:
await self._auth_handler.complete_sso_ui_auth(
registered_user_id, session, request,
user_id, session, request,
)
else:
if not registered_user_id:
# Pull out the user-agent and IP from the request.
user_agent = request.get_user_agent("")
ip_address = self.hs.get_ip_from_request(request)
registered_user_id = await self._registration_handler.register_user(
localpart=localpart,
default_display_name=user_display_name,
user_agent_ips=(user_agent, ip_address),
)
# If this not a UI auth request than there must be a redirect URL.
assert client_redirect_url
await self._auth_handler.complete_sso_login(
registered_user_id, request, client_redirect_url
user_id, request, client_redirect_url
)
async def _map_cas_user_to_matrix_user(
self,
remote_user_id: str,
display_name: Optional[str],
user_agent: str,
ip_address: str,
) -> str:
"""
Given a CAS username, retrieve the user ID for it and possibly register the user.
Args:
remote_user_id: The username from the CAS response.
display_name: The display name from the CAS response.
user_agent: The user agent of the client making the request.
ip_address: The IP address of the client making the request.
Returns:
The user ID associated with this response.
"""
localpart = map_username_to_mxid_localpart(remote_user_id)
user_id = UserID(localpart, self._hostname).to_string()
registered_user_id = await self._auth_handler.check_user_exists(user_id)
# If the user does not exist, register it.
if not registered_user_id:
registered_user_id = await self._registration_handler.register_user(
localpart=localpart,
default_display_name=display_name,
user_agent_ips=[(user_agent, ip_address)],
)
return registered_user_id

2
synapse/handlers/oidc_handler.py
View File

@ -925,7 +925,7 @@ class OidcHandler(BaseHandler):
registered_user_id = await self._registration_handler.register_user(
localpart=localpart,
default_display_name=attributes["display_name"],
user_agent_ips=(user_agent, ip_address),
user_agent_ips=[(user_agent, ip_address)],
)
await self.store.record_user_external_id(

214
synapse/handlers/register.py
View File

@ -15,10 +15,12 @@
"""Contains functions for registering clients."""
import logging
from typing import TYPE_CHECKING, List, Optional, Tuple
from synapse import types
from synapse.api.constants import MAX_USERID_LENGTH, EventTypes, JoinRules, LoginType
from synapse.api.errors import AuthError, Codes, ConsentNotGivenError, SynapseError
from synapse.appservice import ApplicationService
from synapse.config.server import is_threepid_reserved
from synapse.http.servlet import assert_params_in_dict
from synapse.replication.http.login import RegisterDeviceReplicationServlet
@ -32,16 +34,14 @@ from synapse.types import RoomAlias, UserID, create_requester
from ._base import BaseHandler
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
logger = logging.getLogger(__name__)
class RegistrationHandler(BaseHandler):
def __init__(self, hs):
"""
Args:
hs (synapse.server.HomeServer):
"""
def __init__(self, hs: "HomeServer"):
super().__init__(hs)
self.hs = hs
self.auth = hs.get_auth()
@ -71,7 +71,10 @@ class RegistrationHandler(BaseHandler):
self.session_lifetime = hs.config.session_lifetime
async def check_username(
self, localpart, guest_access_token=None, assigned_user_id=None
self,
localpart: str,
guest_access_token: Optional[str] = None,
assigned_user_id: Optional[str] = None,
):
if types.contains_invalid_mxid_characters(localpart):
raise SynapseError(
@ -140,39 +143,45 @@ class RegistrationHandler(BaseHandler):
async def register_user(
self,
localpart=None,
password_hash=None,
guest_access_token=None,
make_guest=False,
admin=False,
threepid=None,
user_type=None,
default_display_name=None,
address=None,
bind_emails=[],
by_admin=False,
user_agent_ips=None,
):
localpart: Optional[str] = None,
password_hash: Optional[str] = None,
guest_access_token: Optional[str] = None,
make_guest: bool = False,
admin: bool = False,
threepid: Optional[dict] = None,
user_type: Optional[str] = None,
default_display_name: Optional[str] = None,
address: Optional[str] = None,
bind_emails: List[str] = [],
by_admin: bool = False,
user_agent_ips: Optional[List[Tuple[str, str]]] = None,
) -> str:
"""Registers a new client on the server.
Args:
localpart: The local part of the user ID to register. If None,
one will be generated.
password_hash (str|None): The hashed password to assign to this user so they can
password_hash: The hashed password to assign to this user so they can
login again. This can be None which means they cannot login again
via a password (e.g. the user is an application service user).
user_type (str|None): type of user. One of the values from
guest_access_token: The access token used when this was a guest
account.
make_guest: True if the the new user should be guest,
false to add a regular user account.
admin: True if the user should be registered as a server admin.
threepid: The threepid used for registering, if any.
user_type: type of user. One of the values from
api.constants.UserTypes, or None for a normal user.
default_display_name (unicode|None): if set, the new user's displayname
default_display_name: if set, the new user's displayname
will be set to this. Defaults to 'localpart'.
address (str|None): the IP address used to perform the registration.
bind_emails (List[str]): list of emails to bind to this account.
by_admin (bool): True if this registration is being made via the
address: the IP address used to perform the registration.
bind_emails: list of emails to bind to this account.
by_admin: True if this registration is being made via the
admin api, otherwise False.
user_agent_ips (List[(str, str)]): Tuples of IP addresses and user-agents used
user_agent_ips: Tuples of IP addresses and user-agents used
during the registration process.
Returns:
str: user_id
The registere user_id.
Raises:
SynapseError if there was a problem registering.
"""
@ -236,8 +245,10 @@ class RegistrationHandler(BaseHandler):
else:
# autogen a sequential user ID
fail_count = 0
user = None
while not user:
# If a default display name is not given, generate one.
generate_display_name = default_display_name is None
# This breaks on successful registration *or* errors after 10 failures.
while True:
# Fail after being unable to find a suitable ID a few times
if fail_count > 10:
raise SynapseError(500, "Unable to find a suitable guest user ID")
@ -246,7 +257,7 @@ class RegistrationHandler(BaseHandler):
user = UserID(localpart, self.hs.hostname)
user_id = user.to_string()
self.check_user_id_not_appservice_exclusive(user_id)
if default_display_name is None:
if generate_display_name:
default_display_name = localpart
try:
await self.register_with_store(
@ -262,8 +273,6 @@ class RegistrationHandler(BaseHandler):
break
except SynapseError:
# if user id is taken, just generate another
user = None
user_id = None
fail_count += 1
if not self.hs.config.user_consent_at_registration:
@ -295,7 +304,7 @@ class RegistrationHandler(BaseHandler):
return user_id
async def _create_and_join_rooms(self, user_id: str):
async def _create_and_join_rooms(self, user_id: str) -> None:
"""
Create the auto-join rooms and join or invite the user to them.
@ -379,7 +388,7 @@ class RegistrationHandler(BaseHandler):
except Exception as e:
logger.error("Failed to join new user to %r: %r", r, e)
async def _join_rooms(self, user_id: str):
async def _join_rooms(self, user_id: str) -> None:
"""
Join or invite the user to the auto-join rooms.
@ -425,6 +434,9 @@ class RegistrationHandler(BaseHandler):
# Send the invite, if necessary.
if requires_invite:
# If an invite is required, there must be a auto-join user ID.
assert self.hs.config.registration.auto_join_user_id
await room_member_handler.update_membership(
requester=create_requester(
self.hs.config.registration.auto_join_user_id,
@ -456,7 +468,7 @@ class RegistrationHandler(BaseHandler):
except Exception as e:
logger.error("Failed to join new user to %r: %r", r, e)
async def _auto_join_rooms(self, user_id: str):
async def _auto_join_rooms(self, user_id: str) -> None:
"""Automatically joins users to auto join rooms - creating the room in the first place
if the user is the first to be created.
@ -479,16 +491,16 @@ class RegistrationHandler(BaseHandler):
else:
await self._join_rooms(user_id)
async def post_consent_actions(self, user_id):
async def post_consent_actions(self, user_id: str) -> None:
"""A series of registration actions that can only be carried out once consent
has been granted
Args:
user_id (str): The user to join
user_id: The user to join
"""
await self._auto_join_rooms(user_id)
async def appservice_register(self, user_localpart, as_token):
async def appservice_register(self, user_localpart: str, as_token: str) -> str:
user = UserID(user_localpart, self.hs.hostname)
user_id = user.to_string()
service = self.store.get_app_service_by_token(as_token)
@ -513,7 +525,9 @@ class RegistrationHandler(BaseHandler):
)
return user_id
def check_user_id_not_appservice_exclusive(self, user_id, allowed_appservice=None):
def check_user_id_not_appservice_exclusive(
self, user_id: str, allowed_appservice: Optional[ApplicationService] = None
) -> None:
# don't allow people to register the server notices mxid
if self._server_notices_mxid is not None:
if user_id == self._server_notices_mxid:
@ -537,12 +551,12 @@ class RegistrationHandler(BaseHandler):
errcode=Codes.EXCLUSIVE,
)
def check_registration_ratelimit(self, address):
def check_registration_ratelimit(self, address: Optional[str]) -> None:
"""A simple helper method to check whether the registration rate limit has been hit
for a given IP address
Args:
address (str|None): the IP address used to perform the registration. If this is
address: the IP address used to perform the registration. If this is
None, no ratelimiting will be performed.
Raises:
@ -553,42 +567,39 @@ class RegistrationHandler(BaseHandler):
self.ratelimiter.ratelimit(address)
def register_with_store(
async def register_with_store(
self,
user_id,
password_hash=None,
was_guest=False,
make_guest=False,
appservice_id=None,
create_profile_with_displayname=None,
admin=False,
user_type=None,
address=None,
shadow_banned=False,
):
user_id: str,
password_hash: Optional[str] = None,
was_guest: bool = False,
make_guest: bool = False,
appservice_id: Optional[str] = None,
create_profile_with_displayname: Optional[str] = None,
admin: bool = False,
user_type: Optional[str] = None,
address: Optional[str] = None,
shadow_banned: bool = False,
) -> None:
"""Register user in the datastore.
Args:
user_id (str): The desired user ID to register.
password_hash (str|None): Optional. The password hash for this user.
was_guest (bool): Optional. Whether this is a guest account being
user_id: The desired user ID to register.
password_hash: Optional. The password hash for this user.
was_guest: Optional. Whether this is a guest account being
upgraded to a non-guest account.
make_guest (boolean): True if the the new user should be guest,
make_guest: True if the the new user should be guest,
false to add a regular user account.
appservice_id (str|None): The ID of the appservice registering the user.
create_profile_with_displayname (unicode|None): Optionally create a
appservice_id: The ID of the appservice registering the user.
create_profile_with_displayname: Optionally create a
profile for the user, setting their displayname to the given value
admin (boolean): is an admin user?
user_type (str|None): type of user. One of the values from
admin: is an admin user?
user_type: type of user. One of the values from
api.constants.UserTypes, or None for a normal user.
address (str|None): the IP address used to perform the registration.
shadow_banned (bool): Whether to shadow-ban the user
Returns:
Awaitable
address: the IP address used to perform the registration.
shadow_banned: Whether to shadow-ban the user
"""
if self.hs.config.worker_app:
return self._register_client(
await self._register_client(
user_id=user_id,
password_hash=password_hash,
was_guest=was_guest,
@ -601,7 +612,7 @@ class RegistrationHandler(BaseHandler):
shadow_banned=shadow_banned,
)
else:
return self.store.register_user(
await self.store.register_user(
user_id=user_id,
password_hash=password_hash,
was_guest=was_guest,
@ -614,22 +625,24 @@ class RegistrationHandler(BaseHandler):
)
async def register_device(
self, user_id, device_id, initial_display_name, is_guest=False
):
self,
user_id: str,
device_id: Optional[str],
initial_display_name: Optional[str],
is_guest: bool = False,
) -> Tuple[str, str]:
"""Register a device for a user and generate an access token.
The access token will be limited by the homeserver's session_lifetime config.
Args:
user_id (str): full canonical @user:id
device_id (str|None): The device ID to check, or None to generate
a new one.
initial_display_name (str|None): An optional display name for the
device.
is_guest (bool): Whether this is a guest account
user_id: full canonical @user:id
device_id: The device ID to check, or None to generate a new one.
initial_display_name: An optional display name for the device.
is_guest: Whether this is a guest account
Returns:
tuple[str, str]: Tuple of device ID and access token
Tuple of device ID and access token
"""
if self.hs.config.worker_app:
@ -649,7 +662,7 @@ class RegistrationHandler(BaseHandler):
)
valid_until_ms = self.clock.time_msec() + self.session_lifetime
device_id = await self.device_handler.check_device_registered(
registered_device_id = await self.device_handler.check_device_registered(
user_id, device_id, initial_display_name
)
if is_guest:
@ -659,20 +672,21 @@ class RegistrationHandler(BaseHandler):
)
else:
access_token = await self._auth_handler.get_access_token_for_user_id(
user_id, device_id=device_id, valid_until_ms=valid_until_ms
user_id, device_id=registered_device_id, valid_until_ms=valid_until_ms
)
return (device_id, access_token)
return (registered_device_id, access_token)
async def post_registration_actions(self, user_id, auth_result, access_token):
async def post_registration_actions(
self, user_id: str, auth_result: dict, access_token: Optional[str]
) -> None:
"""A user has completed registration
Args:
user_id (str): The user ID that consented
auth_result (dict): The authenticated credentials of the newly
registered user.
access_token (str|None): The access token of the newly logged in
device, or None if `inhibit_login` enabled.
user_id: The user ID that consented
auth_result: The authenticated credentials of the newly registered user.
access_token: The access token of the newly logged in device, or
None if `inhibit_login` enabled.
"""
if self.hs.config.worker_app:
await self._post_registration_client(
@ -698,19 +712,20 @@ class RegistrationHandler(BaseHandler):
if auth_result and LoginType.TERMS in auth_result:
await self._on_user_consented(user_id, self.hs.config.user_consent_version)
async def _on_user_consented(self, user_id, consent_version):
async def _on_user_consented(self, user_id: str, consent_version: str) -> None:
"""A user consented to the terms on registration
Args:
user_id (str): The user ID that consented.
consent_version (str): version of the policy the user has
consented to.
user_id: The user ID that consented.
consent_version: version of the policy the user has consented to.
"""
logger.info("%s has consented to the privacy policy", user_id)
await self.store.user_set_consent_version(user_id, consent_version)
await self.post_consent_actions(user_id)
async def _register_email_threepid(self, user_id, threepid, token):
async def _register_email_threepid(
self, user_id: str, threepid: dict, token: Optional[str]
) -> None:
"""Add an email address as a 3pid identifier
Also adds an email pusher for the email address, if configured in the
@ -719,10 +734,9 @@ class RegistrationHandler(BaseHandler):
Must be called on master.
Args:
user_id (str): id of user
threepid (object): m.login.email.identity auth response
token (str|None): access_token for the user, or None if not logged
in.
user_id: id of user
threepid: m.login.email.identity auth response
token: access_token for the user, or None if not logged in.
"""
reqd = ("medium", "address", "validated_at")
if any(x not in threepid for x in reqd):
@ -748,6 +762,8 @@ class RegistrationHandler(BaseHandler):
# up when the access token is saved, but that's quite an
# invasive change I'd rather do separately.
user_tuple = await self.store.get_user_by_access_token(token)
# The token better still exist.
assert user_tuple
token_id = user_tuple.token_id
await self.pusher_pool.add_pusher(
@ -762,14 +778,14 @@ class RegistrationHandler(BaseHandler):
data={},
)
async def _register_msisdn_threepid(self, user_id, threepid):
async def _register_msisdn_threepid(self, user_id: str, threepid: dict) -> None:
"""Add a phone number as a 3pid identifier
Must be called on master.
Args:
user_id (str): id of user
threepid (object): m.login.msisdn auth response
user_id: id of user
threepid: m.login.msisdn auth response
"""
try:
assert_params_in_dict(threepid, ["medium", "address", "validated_at"])

6
synapse/handlers/saml_handler.py
View File

@ -39,7 +39,7 @@ from synapse.util.async_helpers import Linearizer
from synapse.util.iterutils import chunk_seq
if TYPE_CHECKING:
import synapse.server
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
@ -56,7 +56,7 @@ class Saml2SessionData:
class SamlHandler(BaseHandler):
def __init__(self, hs: "synapse.server.HomeServer"):
def __init__(self, hs: "HomeServer"):
super().__init__(hs)
self._saml_client = Saml2Client(hs.config.saml2_sp_config)
self._saml_idp_entityid = hs.config.saml2_idp_entityid
@ -330,7 +330,7 @@ class SamlHandler(BaseHandler):
localpart=localpart,
default_display_name=displayname,
bind_emails=emails,
user_agent_ips=(user_agent, ip_address),
user_agent_ips=[(user_agent, ip_address)],
)
await self.store.record_user_external_id(