From f69780fa8d1992451150c5d67af088f5c329861a Mon Sep 17 00:00:00 2001
From: Dmitry Ilvokhin <d@ilvokhin.com>
Date: Sat, 6 Jan 2024 18:02:13 +0000
Subject: Add half-baked and untested certificate management

---
 roles/web/files/sites/ip.ilvokhin.com | 28 ++++++++++++++++++++++++++++
 roles/web/tasks/certificate.yml       | 15 +++++++++++++++
 roles/web/tasks/sites/ip.yml          |  7 +++++++
 3 files changed, 50 insertions(+)
 create mode 100644 roles/web/files/sites/ip.ilvokhin.com
 create mode 100644 roles/web/tasks/certificate.yml
 create mode 100644 roles/web/tasks/sites/ip.yml

diff --git a/roles/web/files/sites/ip.ilvokhin.com b/roles/web/files/sites/ip.ilvokhin.com
new file mode 100644
index 0000000..0555c67
--- /dev/null
+++ b/roles/web/files/sites/ip.ilvokhin.com
@@ -0,0 +1,28 @@
+server {
+    server_name ip.ilvokhin.com www.ip.ilvokhin.com;
+
+    location / {
+        default_type text/plain;
+        return 200 $remote_addr\n;
+    }
+
+    listen 443 ssl;
+    ssl_certificate /etc/letsencrypt/live/ip.ilvokhin.com/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/ip.ilvokhin.com/privkey.pem;
+    include /etc/letsencrypt/options-ssl-nginx.conf;
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
+}
+
+# Do not redirect to https to get a plain output for `curl ip.ilvokhin.com`
+# command.
+server {
+    server_name ip.ilvokhin.com www.ip.ilvokhin.com;
+
+    location / {
+        default_type text/plain;
+        return 200 $remote_addr\n;
+    }
+
+    listen 80;
+    listen [::]:80;
+}
diff --git a/roles/web/tasks/certificate.yml b/roles/web/tasks/certificate.yml
new file mode 100644
index 0000000..5d25a63
--- /dev/null
+++ b/roles/web/tasks/certificate.yml
@@ -0,0 +1,15 @@
+- name: Request SSL certificate from Let's Encrypt
+  shell: |
+    # Make task independent: if nginx is already running, stop it and then
+    # start back on exit.
+    [ -f /var/run/nginx.pid ] && systemctl stop nginx
+    trap "systemctl start nginx" EXIT
+    certbot certonly \
+        --standalone \
+        --agree-tos \
+        --renew-by-default \
+        --email webmaster@ilvokhin.com \
+        --rsa-key-size 4096 \
+        -d {{ domains | join(' -d ') }}
+  args:
+    creates: '/etc/letsencrypt/live/{{ domains | first }}/fullchain.pem'
diff --git a/roles/web/tasks/sites/ip.yml b/roles/web/tasks/sites/ip.yml
new file mode 100644
index 0000000..a9d2d32
--- /dev/null
+++ b/roles/web/tasks/sites/ip.yml
@@ -0,0 +1,7 @@
+- name: Configure nginx for ip.ilvokhin.com
+  ansible.builtin.copy:
+    src: roles/web/files/sites/ip.ilvokhin.com
+    dest: /etc/nginx/sites-available
+    owner: root
+    group: root
+    mode: u+rw,g+r,o+r
-- 
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