Redirect gab users to a configurable URL rather than logging them in.

The default URL is "Never Gonna Give You Up" on invidio.us.

brutaldon/settings.py

@@ -199,5 +199,8 @@ SESSION_SERIALIZER = "django.contrib.sessions.serializers.PickleSerializer"
 # URL to redirect users to when not logged in
 ANONYMOUS_HOME_URL = "about"
 
+# URL to redirect gab users to
+GAB_RICKROLL_URL = "https://invidio.us/watch?v=dQw4w9WgXcQ"
+
 # Version number displayed on about page
 BRUTALDON_VERSION = "2.12.1"

brutaldon/views.py

@@ -352,6 +352,8 @@ def login(request):
         redirect_uris = request.build_absolute_uri(reverse("oauth_callback"))
         if form.is_valid():
             api_base_url = form.cleaned_data["instance"]
+            if "gab.com" in api_base_url:
+                return redirect(django_settings.GAB_RICKROLL_URL)
             tmp_base = parse.urlparse(api_base_url.lower())
             if tmp_base.netloc == "":
                 api_base_url = parse.urlunparse(
@@ -461,6 +463,8 @@ def old_login(request):
         form = LoginForm(request.POST)
         if form.is_valid():
             api_base_url = form.cleaned_data["instance"]
+            if "gab.com" in api_base_url:
+                return redirect(django_settings.GAB_RICKROLL_URL)
             tmp_base = parse.urlparse(api_base_url.lower())
             if tmp_base.netloc == "":
                 api_base_url = parse.urlunparse(