[mailman3] Disable signup on mailman

This module disables signup on mailman web UI.

Signed-off-by: Michal Konecny <mkonecny@redhat.com>

roles/mailman3/files/django_fedora_nosignup.py

@@ -0,0 +1,14 @@
+# Disable local signup
+
+from allauth.account.adapter import DefaultAccountAdapter
+from allauth.socialaccount.adapter import DefaultSocialAccountAdapter
+
+class NoLocalSignUpAdapter(DefaultAccountAdapter):
+
+    def is_open_for_signup(self, request):
+        return False
+
+class SignUpEnabledSocialAdapter(DefaultSocialAccountAdapter):
+
+    def is_open_for_signup(self, request, sociallogin):
+        return True

roles/mailman3/tasks/main.yml

@@ -285,6 +285,19 @@
     - mailman
     - db
 
+- name: Install the fedora-specific modules
+  ansible.builtin.copy:
+    src: django_fedora_nosignup.py
+    dest: "{{ mailman_webui_confdir }}/django_fedora_nosignup.py"
+    owner: root
+    group: root
+    mode: 0644
+  tags:
+  - config
+  - mailman
+  notify:
+    - reload apache
+
 #
 # Plug HyperKitty into Mailman
 #

roles/mailman3/templates/settings.py.j2

@@ -68,10 +68,10 @@ INSTALLED_APPS = (
     'django_q',
     'hyperkitty',
     'postorius',
-    {% for service_name, service_data in mailman_login.items() %}
+{% for service_name, service_data in mailman_login.items() %}
     'allauth.socialaccount.providers.{{ service_data.provider }}',
-    {% endfor %}
-    'allauth.socialaccount.providers.openid',
+{% endfor %}
+    'allauth.socialaccount.providers.openid_connect',
 )
 
 
@@ -223,6 +223,9 @@ ACCOUNT_EMAIL_REQUIRED = True
 ACCOUNT_EMAIL_VERIFICATION = "mandatory"
 ACCOUNT_DEFAULT_HTTP_PROTOCOL = "https"
 ACCOUNT_UNIQUE_EMAIL  = True
+# Disable local signup
+ACCOUNT_ADAPTER = "django_fedora_nosignup.NoLocalSignUpAdapter"
+SOCIALACCOUNT_ADAPTER = "django_fedora_nosignup.SignUpEnabledSocialAdapter"
 
 SOCIALACCOUNT_PROVIDERS = {
     'openid': {