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UI Auth via SSO: redirect the user to an appropriate SSO. (#9081)

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If we have integrations with multiple identity providers, when the user does a UI Auth, we need to redirect them to the right one.

There are a few steps to this. First of all we actually need to store the userid of the user we are trying to validate in the UIA session, since the /auth/sso/fallback/web request is unauthenticated.

Then, once we get the /auth/sso/fallback/web request, we can fish the user id out of the session, and use it to look up the external id mappings, and hence pick an SSO provider for them.
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Richard van der Hoff 2021-01-12 17:38:03 +00:00 • committed by GitHub
parent 723b19748a
commit 789d9ebad3
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7 changed files with 133 additions and 60 deletions
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18
synapse/rest/client/v2_alpha/account.py
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@ -20,9 +20,6 @@ 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,
@ -31,6 +28,7 @@ from synapse.api.errors import (
ThreepidValidationError,
)
from synapse.config.emailconfig import ThreepidBehaviour
from synapse.handlers.ui_auth import UIAuthSessionDataConstants
from synapse.http.server import finish_request, respond_with_html
from synapse.http.servlet import (
RestServlet,
@ -46,6 +44,10 @@ from synapse.util.threepids import canonicalise_email, check_3pid_allowed
from ._base import client_patterns, interactive_auth_handler
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
logger = logging.getLogger(__name__)
@ -200,7 +202,9 @@ class PasswordRestServlet(RestServlet):
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
e.session_id,
UIAuthSessionDataConstants.PASSWORD_HASH,
password_hash,
)
raise
user_id = requester.user.to_string()
@ -222,7 +226,9 @@ class PasswordRestServlet(RestServlet):
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
e.session_id,
UIAuthSessionDataConstants.PASSWORD_HASH,
password_hash,
)
raise
@ -255,7 +261,7 @@ class PasswordRestServlet(RestServlet):
password_hash = await self.auth_handler.hash(new_password)
elif session_id is not None:
password_hash = await self.auth_handler.get_session_data(
session_id, "password_hash", None
session_id, UIAuthSessionDataConstants.PASSWORD_HASH, None
)
else:
# UI validation was skipped, but the request did not include a new