From a0ef587a41b22306c0f203fa223770d64d9ae3b4 Mon Sep 17 00:00:00 2001
From: Markus Hauschild <markus@moepman.eu>
Date: Mon, 3 Jul 2017 21:18:45 +0200
Subject: [PATCH] Add web-server for gateways

---
 roles/certmgr/tasks/main.yml    |  3 +++
 roles/web-gw/handlers/main.yml  |  7 +++++++
 roles/web-gw/meta/main.yml      |  5 +++++
 roles/web-gw/tasks/main.yml     | 17 +++++++++++++++++
 roles/web-gw/templates/certs.j2 | 15 +++++++++++++++
 roles/web-gw/templates/vhost.j2 | 25 +++++++++++++++++++++++++
 site.yml                        |  1 +
 7 files changed, 73 insertions(+)
 create mode 100644 roles/web-gw/handlers/main.yml
 create mode 100644 roles/web-gw/meta/main.yml
 create mode 100644 roles/web-gw/tasks/main.yml
 create mode 100644 roles/web-gw/templates/certs.j2
 create mode 100644 roles/web-gw/templates/vhost.j2

diff --git a/roles/certmgr/tasks/main.yml b/roles/certmgr/tasks/main.yml
index 1ee3dfd..f8bf19d 100644
--- a/roles/certmgr/tasks/main.yml
+++ b/roles/certmgr/tasks/main.yml
@@ -32,6 +32,9 @@
   - /etc/acme/account.key
   - /etc/acme/server.key
 
+- name: Download Lets Encrypt CA certificate
+  get_url: url=https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem dest=/etc/acme/lets-encrypt-x3-cross-signed.pem
+
 - name: Create challenge directory
   file: path=/var/www/acme-challenge/ owner=root mode=0755 state=directory
 
diff --git a/roles/web-gw/handlers/main.yml b/roles/web-gw/handlers/main.yml
new file mode 100644
index 0000000..9735dcd
--- /dev/null
+++ b/roles/web-gw/handlers/main.yml
@@ -0,0 +1,7 @@
+---
+
+- name: Restart nginx
+  service: name=nginx state=restarted
+
+- name: Run certmgr
+  command: /opt/acertmgr/acertmgr.py
diff --git a/roles/web-gw/meta/main.yml b/roles/web-gw/meta/main.yml
new file mode 100644
index 0000000..8d2c010
--- /dev/null
+++ b/roles/web-gw/meta/main.yml
@@ -0,0 +1,5 @@
+---
+
+dependencies:
+- { role: certmgr }
+- { role: nginx, nginx_ssl: True }
diff --git a/roles/web-gw/tasks/main.yml b/roles/web-gw/tasks/main.yml
new file mode 100644
index 0000000..36a824a
--- /dev/null
+++ b/roles/web-gw/tasks/main.yml
@@ -0,0 +1,17 @@
+---
+
+- name: Ensure certificates are available
+  command: openssl req -x509 -nodes -newkey rsa:2048 -keyout /etc/nginx/ssl/{{ ansible_fqdn }}.key -out /etc/nginx/ssl/{{ ansible_fqdn }}.crt -days 730 -subj "/CN={{ ansible_fqdn }}" creates=/etc/nginx/ssl/{{ ansible_fqdn }}.crt
+  notify: Restart nginx
+
+- name: Configure certificate manager
+  template: src=certs.j2 dest=/etc/acme/domains.d/{{ ansible_fqdn }}.conf
+  notify: Run certmgr
+
+- name: Configure vhosts
+  template: src=vhost.j2 dest=/etc/nginx/sites-available/www
+  notify: Restart nginx
+
+- name: Enable vhosts
+  file: src=/etc/nginx/sites-available/www dest=/etc/nginx/sites-enabled/www state=link
+  notify: Restart nginx
diff --git a/roles/web-gw/templates/certs.j2 b/roles/web-gw/templates/certs.j2
new file mode 100644
index 0000000..406db07
--- /dev/null
+++ b/roles/web-gw/templates/certs.j2
@@ -0,0 +1,15 @@
+---
+
+{{ ansible_fqdn }}:
+- path: /etc/nginx/ssl/{{ ansible_fqdn }}.crt
+  user: root
+  group: root
+  perm: '400'
+  format: crt,ca
+  action: '/usr/sbin/service nginx restart'
+- path: /etc/nginx/ssl/{{ ansible_fqdn }}.key
+  user: root
+  group: root
+  perm: '400'
+  format: key
+  action: '/usr/sbin/service nginx restart'
diff --git a/roles/web-gw/templates/vhost.j2 b/roles/web-gw/templates/vhost.j2
new file mode 100644
index 0000000..cff2d88
--- /dev/null
+++ b/roles/web-gw/templates/vhost.j2
@@ -0,0 +1,25 @@
+server {
+	listen 80;
+	listen [::]:80;
+
+	server_name _;
+
+	location /.well-known/acme-challenge {
+		default_type "text/plain";
+		alias /var/www/acme-challenge;
+	}
+
+	root /var/www/html;
+}
+
+server {
+	listen 443 ssl http2;
+	listen [::]:443 ssl http2;
+
+	server_name {{ ansible_fqdn }};
+
+	ssl_certificate_key /etc/nginx/ssl/{{ ansible_fqdn }}.key;
+	ssl_certificate /etc/nginx/ssl/{{ ansible_fqdn }}.crt;
+
+	root /var/www/html;
+}
diff --git a/site.yml b/site.yml
index ab4c353..bdb9733 100644
--- a/site.yml
+++ b/site.yml
@@ -18,6 +18,7 @@
   - dhcpd
   - respondd
   - yanic
+  - web-gw
 
 - name: Setup confluence server
   hosts: confluence.regensburg.freifunk.net