Better logging (to sentry) when CAS auth fails

Author: C4ptainCrunch

users/views.py

@@ -1,16 +1,22 @@
+import logging
+
 from django.contrib.auth import authenticate, login
 from django.contrib.auth.decorators import login_required
 from django.http import HttpResponseRedirect
 from django.template.response import TemplateResponse
 from django.urls import reverse
 
+from requests.exceptions import ConnectionError, SSLError
+
 from users.authBackend import (
     CasParseError,
     CasRejectError,
     CasRequestError,
     UlbCasBackend,
 )
 
+logger = logging.getLogger(__name__)
+
 
 @login_required
 def panel_hide(request):
@@ -40,10 +46,12 @@ def auth_ulb(request):
     try:
         user = authenticate(ticket=ticket)
     except CasRejectError as e:
+        logger.exception("CAS rejected")
         return TemplateResponse(
             request, "users/auth/error.html", {"code": e.args[0], "debug": e.args[1]}
         )
     except CasRequestError as e:
+        logger.exception("CAS request error")
         cas_request = e.args[0]
         return TemplateResponse(
             request,
@@ -54,9 +62,20 @@ def auth_ulb(request):
             },
         )
     except CasParseError as e:
+        logger.exception("CAS parse error")
         return TemplateResponse(
             request, "users/auth/error.html", {"code": e.args[0], "debug": e.args[1]}
         )
+    except (ConnectionError, SSLError) as e:
+        logger.exception("CAS SSL error")
+        return TemplateResponse(
+            request, "users/auth/error.html", {"code": "SSL", "debug": e.args[0]}
+        )
+    except Exception as e:
+        logger.exception("CAS unknown error")
+        return TemplateResponse(
+            request, "users/auth/error.html", {"code": "UNKNOWN", "debug": e.args[0]}
+        )
 
     if user is None:
         return TemplateResponse(request, "users/auth/unknown-error.html", {})