From c85806e3289b5e207d51d382f8dc75edad04404d Mon Sep 17 00:00:00 2001
From: Kumar Damani <me@kumardamani.net>
Date: Tue, 23 Aug 2022 12:02:28 -0400
Subject: switched to alpine initial commit

---
 roles/wireguard/handlers/main.yaml    |  5 -----
 roles/wireguard/tasks/main.yaml       | 38 +++++++++++++++++++++++++++++++----
 roles/wireguard/templates/wg0.conf.j2 |  7 ++++---
 3 files changed, 38 insertions(+), 12 deletions(-)

(limited to 'roles/wireguard')

diff --git a/roles/wireguard/handlers/main.yaml b/roles/wireguard/handlers/main.yaml
index bd5fc0d..cd21505 100644
--- a/roles/wireguard/handlers/main.yaml
+++ b/roles/wireguard/handlers/main.yaml
@@ -1,7 +1,2 @@
 ---
 
-- name: 'Restart wireguard'
-  systemd:
-    name: 'wg-quick@wg0'
-    state: 'restarted'
-  listen: 'restart wireguard'
diff --git a/roles/wireguard/tasks/main.yaml b/roles/wireguard/tasks/main.yaml
index d7e1e51..c3f0942 100644
--- a/roles/wireguard/tasks/main.yaml
+++ b/roles/wireguard/tasks/main.yaml
@@ -1,20 +1,35 @@
 # https://dev.to/tangramvision/exploring-ansible-via-setting-up-a-wireguard-vpn-3389
 ---
 
-- name: 'install wireguard package'
+- block:
+    - name: 'Install necessary pkgs for Alpine'
+      apk:
+        name: '{{ item }}'
+        state: 'latest'
+      loop:
+        - 'iptables'
+        - 'wireguard-tools'
+
+    - name: 'Enable iptables'
+      service:
+        name: 'iptables'
+        enabled: true
+  when: 'ansible_os_family == "Alpine"'
+
+- name: 'Install wireguard package for Debian'
   apt:
     name: 'wireguard'
     state: 'present'
     update_cache: true
+  when: 'ansible_os_family == "Debian"'
 
-- name: 'create server wireguard config'
+- name: 'Create server wireguard config'
   template:
     dest: '/etc/wireguard/wg0.conf'
     src: 'wg0.conf.j2'
     owner: 'root'
     group: 'root'
     mode: '600'
-  notify: 'restart wireguard'
 
 - name: 'Enable IP Forwarding'
   sysctl:
@@ -31,8 +46,23 @@
     - sysctl_key: 'net.ipv6.conf.all.forwarding'
       sysctl_val: "1"
 
-- name: 'start wireguard and enable on boot'
+- name: 'Start wireguard and enable on boot in Debian'
   systemd:
     name: 'wg-quick@wg0'
     state: 'started'
     enabled: true
+  when: 'ansible_os_family == "Debian"'
+
+- name: 'Ensure that wireguard interface starts on boot in Alpine'
+  blockinfile:
+    path: '/etc/network/interfaces'
+    block: |
+      auto wg0
+      iface wg0 inet static
+          requires eth0
+          address 192.168.10.1
+          pre-up ip link add dev wg0 type wireguard
+          pre-up wg setconf wg0 <(wg-quick strip wg0)
+          post-up iptables -A FORWARD -i wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE;iptables -A FORWARD -o wg0 -j ACCEPT
+          post-down iptables -D FORWARD -i wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE;iptables -D FORWARD -o wg0 -j ACCEPT
+  when: 'ansible_os_family == "Alpine"'
diff --git a/roles/wireguard/templates/wg0.conf.j2 b/roles/wireguard/templates/wg0.conf.j2
index 6e7bcc1..5201c32 100644
--- a/roles/wireguard/templates/wg0.conf.j2
+++ b/roles/wireguard/templates/wg0.conf.j2
@@ -1,12 +1,13 @@
 # {{ ansible_managed }}
 
 [Interface]
+{% if ansible_os_family == "Debian" %}
 Address = {{ wireguard_server_ip }}
+{% endif %}
 ListenPort = {{ wireguard_server_listen_port }}
 PrivateKey = {{ wireguard_server_priv_key }}
-PostUp = iptables -A FORWARD -i wg0 -o wg0 -j ACCEPT
-PostUp = iptables -w -t nat -A POSTROUTING -o eth0 -j MASQUERADE; ip6tables -w -t nat -A POSTROUTING -o eth0 -j MASQUERADE
-PostDown = iptables -w -t nat -D POSTROUTING -o eth0 -j MASQUERADE; ip6tables -w -t nat -D POSTROUTING -o eth0 -j MASQUERADE
+PostUp = iptables -A FORWARD -i %i -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE;iptables -A FORWARD -o %i -j ACCEPT
+PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE;iptables -D FORWARD -o %i -j ACCEPT
 
 
 {% for peer in wireguard_peers %}
-- 
cgit v1.2.3