From b3794ea1d51e4904f04bc3e37e819e7453287246 Mon Sep 17 00:00:00 2001
From: Jeremy Stanley <fungi@yuggoth.org>
Date: Fri, 16 Dec 2022 16:51:59 +0000
Subject: [PATCH] Use magic domain guessing in Mailman 3

Setting SITE_ID=0 in settings.py is a signal to Postorius and
Hyperkitty that they should guess the domain and filter lists based
on the hostname supplied by the browser:

https://docs.mailman3.org/en/latest/faq.html#the-domain-name-displayed-in-hyperkitty-shows-example-com-or-something-else

Change-Id: I34df58fd95df3ff8075850ac370be9260a245021
---
 .../roles/mailman3/files/web-settings.py      |  5 +-
 playbooks/roles/mailman3/tasks/main.yaml      | 58 +++++++++++++++++++
 2 files changed, 61 insertions(+), 2 deletions(-)

diff --git a/playbooks/roles/mailman3/files/web-settings.py b/playbooks/roles/mailman3/files/web-settings.py
index 8e2905e2d4..23f47c1226 100644
--- a/playbooks/roles/mailman3/files/web-settings.py
+++ b/playbooks/roles/mailman3/files/web-settings.py
@@ -1,6 +1,6 @@
 # This file has been copied from:
 #  https://github.com/maxking/docker-mailman/blob/2693386453ff3865b7c106c6aa456b683bd3bf08/web/mailman-web/settings.py
-# In order to override the ALLOWED_HOSTS setting.
+# In order to override the ALLOWED_HOSTS and SITE_ID settings.
 #
 # -*- coding: utf-8 -*-
 # Copyright (C) 1998-2016 by the Free Software Foundation, Inc.
@@ -47,7 +47,8 @@ ADMINS = (
      ('Mailman Suite Admin', 'root@localhost'),
 )
 
-SITE_ID = 1
+# Magic value to perform automatic domain guessing
+SITE_ID = 0
 
 # Hosts/domain names that are valid for this site; required if DEBUG is False
 # See https://docs.djangoproject.com/en/3.1/ref/settings/#allowed-hosts
diff --git a/playbooks/roles/mailman3/tasks/main.yaml b/playbooks/roles/mailman3/tasks/main.yaml
index ca8c579faa..2ec20efadc 100644
--- a/playbooks/roles/mailman3/tasks/main.yaml
+++ b/playbooks/roles/mailman3/tasks/main.yaml
@@ -77,6 +77,21 @@
     group: 101
     mode: '0644'
 
+- name: Check for initial setup flag file
+  stat:
+    path: /var/lib/mailman/bootstrapped
+  register: _mailman_bootstrapped
+
+# https://docs.mailman3.org/en/latest/faq.html#the-domain-name-displayed-in-hyperkitty-shows-example-com-or-something-else
+- name: Temporarily turn off magic domain guessing
+  lineinfile:
+    state: present
+    backrefs: yes
+    path: /var/lib/mailman/web/settings.py
+    regexp: '^SITE_ID = 0$'
+    line: 'SITE_ID = 1'
+  when: not _mailman_bootstrapped.stat.exists
+
 - name: Copy our settings_local.py for mailman-web
   copy:
     src: web-settings_local.py
@@ -228,6 +243,49 @@
     --email '{{ mailman3_admin_email }}'"
   no_log: true
 
+- name: Complete new server bootstrapping
+  when: not _mailman_bootstrapped.stat.exists
+  block:
+  - name: Run docker-compose down
+    shell:
+      cmd: docker-compose down
+      chdir: /etc/mailman-compose/
+
+  - name: Turn magic domain guessing back on
+    lineinfile:
+      state: present
+      backrefs: yes
+      path: /var/lib/mailman/web/settings.py
+      regexp: '^SITE_ID = 0$'
+      line: 'SITE_ID = 1'
+
+  - name: Create the bootstrapped flag file
+    copy:
+      content: ""
+      dest: /var/lib/mailman/bootstrapped
+      force: no
+      owner: 100
+      group: 101
+      mode: '0644'
+
+  - name: Run docker-compose up
+    shell:
+      cmd: docker-compose up -d
+      chdir: /etc/mailman-compose/
+
+  - name: Wait for mm3 REST API to be up and running
+    uri:
+      url: 'http://localhost:8001/3.1/domains'
+      url_username: restadmin
+      url_password: "{{ mailman3_rest_password }}"
+      force_basic_auth: yes
+      method: GET
+    register: mm_rest_api_up
+    delay: 1
+    retries: 300
+    until: mm_rest_api_up and mm_rest_api_up.status == 200
+    no_log: true
+
 - name: Create lists in mm3
   include_tasks: create_lists.yaml
   loop: "{{ mailman_sites }}"