From c1c300aa21b407351e6045c7b40480d4120db8a7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Romain=20Gon=C3=A7alves?= <me@rgoncalves.se>
Date: Fri, 10 Dec 2021 18:30:32 +0000
Subject: roles: Generate + deploy wireguard configurations

---
 roles/wireguard/tasks/configuration.yml | 18 +++++++++++++++++
 roles/wireguard/tasks/keys.yml          | 17 +++++++++++++++++
 roles/wireguard/tasks/main.yml          | 34 +++++++++++++++++++++++++++++++++
 roles/wireguard/tasks/service.yml       | 20 +++++++++++++++++++
 4 files changed, 89 insertions(+)
 create mode 100644 roles/wireguard/tasks/configuration.yml
 create mode 100644 roles/wireguard/tasks/keys.yml
 create mode 100644 roles/wireguard/tasks/main.yml
 create mode 100644 roles/wireguard/tasks/service.yml

(limited to 'roles/wireguard/tasks')

diff --git a/roles/wireguard/tasks/configuration.yml b/roles/wireguard/tasks/configuration.yml
new file mode 100644
index 0000000..efb8008
--- /dev/null
+++ b/roles/wireguard/tasks/configuration.yml
@@ -0,0 +1,18 @@
+- name: generate wireguard configuration
+  template:
+    src: wireguard.conf.j2
+    dest: "{{ wireguard_local_dir }}/{{ item }}.conf"
+    mode: 0600
+  vars:
+    host: "{{ hostvars[item] }}"
+  run_once: true
+  delegate_to: localhost
+  loop: "{{ groups.all }}"
+
+- name: copy wireguard configuration
+  copy:
+    src: "{{ wireguard_local_dir }}/{{ wireguard_local_configuration }}"
+    dest: "{{ wireguard_dir }}/{{ wireguard_domain_controller }}.conf"
+    owner: 0
+    group: 0
+    mode: 0600
diff --git a/roles/wireguard/tasks/keys.yml b/roles/wireguard/tasks/keys.yml
new file mode 100644
index 0000000..7a89010
--- /dev/null
+++ b/roles/wireguard/tasks/keys.yml
@@ -0,0 +1,17 @@
+- name: generate hosts keys
+  shell: |
+    set -o pipefail
+    ls "{{ wireguard_local_dir }}/{{ item }}.keys" && exit 0
+    umask 077
+    wg genkey | \
+    tee "{{ item }}.keys" | \
+    wg pubkey >> "{{ item }}.keys"
+    exit 2
+  args:
+    chdir: "{{ wireguard_local_dir }}"
+  loop: "{{ groups.all }}"
+  run_once: true
+  delegate_to: localhost
+  register: result
+  changed_when: result.rc == 2
+  failed_when: result.rc not in [0, 2]
diff --git a/roles/wireguard/tasks/main.yml b/roles/wireguard/tasks/main.yml
new file mode 100644
index 0000000..9f1d01d
--- /dev/null
+++ b/roles/wireguard/tasks/main.yml
@@ -0,0 +1,34 @@
+- name: create local wireguard directory
+  file:
+    path: "{{ wireguard_local_dir }}"
+    state: directory
+    mode: 0700
+  run_once: true
+  delegate_to: localhost
+
+- name: create wireguard directory
+  file:
+    path: "{{ wireguard_dir }}"
+    owner: 0
+    group: 0
+    mode: 0700
+    state: directory
+
+- name: include key generation
+  include_tasks: keys.yml
+
+- name: include configuration generation
+  include_tasks: configuration.yml
+
+- name: install wireguard on remote host
+  package:
+    name: wireguard-tools
+    state: present
+
+- name: include service configuration for server
+  include_tasks: service.yml
+  when: inventory_hostname == wireguard_domain_controller
+
+- name: include service configuration for hosts
+  include_tasks: service.yml
+  when: inventory_hostname != wireguard_domain_controller
diff --git a/roles/wireguard/tasks/service.yml b/roles/wireguard/tasks/service.yml
new file mode 100644
index 0000000..d1a1007
--- /dev/null
+++ b/roles/wireguard/tasks/service.yml
@@ -0,0 +1,20 @@
+- name: enable wireguard interface for OpenBSD
+  lineinfile:
+    path: /etc/rc.local
+    regexp: "^/usr/local/bin/wg-quick up {{ wireguard_domain_controller }}$"
+    line: "/usr/local/bin/wg-quick up {{ wireguard_domain_controller }}"
+    owner: 0
+    owner: 0
+    create: true
+    mode: 0644
+  when: ansible_distribution == "OpenBSD"
+
+- name: restart wireguard interface
+  command: wg-quick "{{ item }}" "{{ wireguard_domain_controller }}"
+  ignore_errors: true
+  loop:
+    - down
+    - up
+  loop_control:
+    pause: 5
+  when: ansible_distribution == "OpenBSD"
-- 
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