From 8024842def28dd151759ee46cd160c7794463aef Mon Sep 17 00:00:00 2001
From: Sacha Chua <sacha@sachachua.com>
Date: Sat, 15 Oct 2022 22:16:28 -0400
Subject: Improve pad proxy with templated config, support SSL on
 pad.emacsconf.org

---
 README.org                              |  4 ++++
 pad-proxy/defaults/main.yml             |  1 +
 pad-proxy/tasks/main.yml                | 16 +++++-----------
 pad-proxy/templates/etherpad.nginx.conf | 34 ++++++++++++++++++++++++++++++++-
 4 files changed, 43 insertions(+), 12 deletions(-)

diff --git a/README.org b/README.org
index 643817f..551496e 100644
--- a/README.org
+++ b/README.org
@@ -87,4 +87,8 @@ curl http://localhost:9001/api/1/createPad?apikey=b7a15dc34cc7f6917cca6cd9a2b4b9
 ** Useful
 https://github.com/systemli/ansible-role-etherpad
 https://gist.github.com/aaronpk/7307172
+* Pad proxy
 
+ansible-playbook -i inventory.yml prod-playbook.yml --tags proxy --extra-vars='{"use_wikimedia": false}'
+
+ansible-playbook -i inventory.yml prod-playbook.yml --tags proxy --extra-vars='{"use_wikimedia": true}'
diff --git a/pad-proxy/defaults/main.yml b/pad-proxy/defaults/main.yml
index c548560..cec03da 100644
--- a/pad-proxy/defaults/main.yml
+++ b/pad-proxy/defaults/main.yml
@@ -1 +1,2 @@
 etherpad_server_name: pad.emacsconf.org
+etherpad_tls: /etc/nginx/tls/emacsconf.org.conf
diff --git a/pad-proxy/tasks/main.yml b/pad-proxy/tasks/main.yml
index d47573a..8de72df 100644
--- a/pad-proxy/tasks/main.yml
+++ b/pad-proxy/tasks/main.yml
@@ -9,19 +9,13 @@
   - name: Add proxy configuration
     template:
       src: etherpad.nginx.conf
-      dest: /etc/nginx/sites-available/etherpad.conf
-    when: not use_wikimedia
-  - name: Add rewrite configuration
-    template:
-      src: wikimedia.etherpad.nginx.conf
-      dest: /etc/nginx/sites-available/etherpad.conf
-    when: use_wikimedia
+      dest: /etc/nginx/sites-available/pad.emacsconf.org
   - name: Enable site
     file:
-      src: /etc/nginx/sites-available/etherpad.conf
-      dest: /etc/nginx/sites-enabled/etherpad.conf
+      src: /etc/nginx/sites-available/pad.emacsconf.org
+      dest: /etc/nginx/sites-enabled/pad.emacsconf.org
       state: link
-  - name: Restart nginx
+  - name: Reload nginx
     service:
       name: nginx
-      state: restarted
+      state: reloaded
diff --git a/pad-proxy/templates/etherpad.nginx.conf b/pad-proxy/templates/etherpad.nginx.conf
index 92ba974..90a7c1c 100644
--- a/pad-proxy/templates/etherpad.nginx.conf
+++ b/pad-proxy/templates/etherpad.nginx.conf
@@ -5,6 +5,19 @@ upstream etherpad_upstream {
 server {
   listen 80;
   server_name {{ etherpad_server_name }};
+  {% if etherpad_tls %}
+  include snippets/well-known-acme-challenge.conf;
+  location / {
+    return 302 https://$server_name$request_uri;
+    }
+    }
+  server {
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
+    server_name {{ etherpad_server_name }};
+    include {{ etherpad_tls }};
+
+  {% endif %}
   access_log  /var/log/nginx/{{ etherpad_server_name }}.access.log;
   location ~ ^/(locales/|locales.json|admin/|static/|pluginfw/|javascripts/|socket.io/|ep/|minified/|api/|ro/|error/|jserror/|favicon.ico|robots.txt) {
     proxy_buffering off;
@@ -12,7 +25,24 @@ server {
     }
   location /p/ {
     rewrite ^/p/(.*) /$1 redirect;
+    }
+  location /direct/ {
+    rewrite /direct/(.*) /$1 break;
+    proxy_set_header        Host $host;
+    proxy_set_header        X-Real-IP $remote_addr;
+    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header        X-Forwarded-Proto $scheme;
+    proxy_pass http://etherpad_upstream/p/;
   }
+
+  {% if use_wikimedia %} 
+  location ~ ^/$ {
+    return 302 https://etherpad.wikimedia.org/p/emacsconf-2022;
+  }
+  location / {
+    rewrite /(.*) https://etherpad.wikimedia.org/p/emacsconf-$1 redirect;
+  }
+  {% else %}
   location ~ ^/$ {
     proxy_buffering off;
     proxy_pass http://etherpad_upstream;
@@ -29,5 +59,7 @@ server {
     proxy_pass http://etherpad_upstream/p/;
     proxy_redirect / /p/;
     proxy_read_timeout  90;
-  }
+    }
+  {% endif %}
 }
+
-- 
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