---
aurweb/routers/sso.py | 19 +--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/aurweb/routers/sso.py b/aurweb/routers/sso.py
index 04ecdca6..efd4462c 100644
--- a/aurweb/routers/sso.py
+++ b/aurweb/routers/sso.py
@@ -14,7 +14,7 @@ from starlette.requests import Request
import aurweb.config
import aurweb.db
-from aurweb.schema import Sessions, Users
+from aurweb.schema import Bans, Sessions, Users
router = fastapi.APIRouter()
@@ -57,13 +57,28 @@ def open_session(conn, user_id):
return sid
+def is_ip_banned(conn, ip):
+"""
+Check if an IP is banned. `ip` is a string and may be an IPv4 as well as an
+IPv6, depending on the server’s configuration.
+"""
+result = conn.execute(Bans.select().where(Bans.c.IPAddress == ip))
+return result.fetchone() is not None
+
+
@router.get("/sso/authenticate")
async def authenticate(request: Request, conn=Depends(aurweb.db.connect)):
"""
Receive an OpenID Connect ID token, validate it, then process it to create
an new AUR session.
"""
-# TODO check for banned IPs
+# TODO Handle translations
+if is_ip_banned(conn, request.client.host):
+raise HTTPException(
+status_code=403,
+detail='The login form is currently disabled for your IP address, '
+ 'probably due to sustained spam attacks. Sorry for the '
+ 'inconvenience.')
token = await oauth.sso.authorize_access_token(request)
user = await oauth.sso.parse_id_token(request, token)
sub = user.get("sub") # this is the SSO account ID in JWT terminology
--
2.27.0
