first version

.gitignore

@@ -0,0 +1,2 @@
+.kitchen/*
+*.pyc

.yamllint

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+---
+extends: default
+
+ignore: |
+  .kitchen/*
+  vendor/
+
+rules:
+  line-length:
+    max: 120
+    level: warning
+  truthy: false

CHANGELOG.md

@@ -0,0 +1,8 @@
+# CHANGELOG
+
+This project adheres to [Semantic Versioning](http://semver.org/).
+Which is based on [Keep A Changelog](http://keepachangelog.com/)
+
+## [Unreleased]
+
+- first version

LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
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+
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+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
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+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
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+   Copyright 2021 Adrien Waksberg
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
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+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

README.md

@@ -0,0 +1,74 @@
+# Ansible role: Strongswan
+
+[![License](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](https://git.yaegashi.fr/nishiki/ansible-role-strongswan/src/branch/master/LICENSE)
+
+Install and configure a IPSEC server with strongswan
+
+## Requirements
+
+* Ansible >= 2.9
+* Debian
+  * Buster
+  * Bullseye
+
+## Role variables
+
+- `strongswan_default_config` - set the default connection config
+
+```
+  type: tunnel
+  auto: start
+  keyexchange: ikev1
+  authby: secret
+  ike: aes256-sha256-modp2048
+  esp: aes256-sha256-modp2048
+  ikelifetime: 10800s
+  lifetime: 3600s
+  aggressive: false
+```
+
+`strongswan_connections` - hash with the IPSEC connections
+
+```
+   test-ipsec:
+     left: 192.168.0.1
+     leftsubnet: 10.0.0.0/24
+     right: 192.168.0.2
+     rightsubnet: 10.1.0.0/24
+     psk: secret
+```
+
+## How to use
+
+```
+- hosts: server
+  roles:
+    - strongswan
+```
+
+## Development
+
+### Test with molecule and docker
+
+* install [docker](https://docs.docker.com/engine/installation/)
+* install `python3` and `python3-pip`
+* install molecule and dependencies `pip3 install molecule molecule-docker docker ansible-lint pytest-testinfra yamllint`
+* run `molecule test`
+
+## License
+
+```
+Copyright (c) 2021 Adrien Waksberg
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+```

defaults/main.yml

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+---
+strongswan_default_config:
+  type: tunnel
+  auto: start
+  keyexchange: ikev1
+  authby: secret
+  ike: aes256-sha256-modp2048
+  esp: aes256-sha256-modp2048
+  ikelifetime: 10800s
+  lifetime: 3600s
+  aggressive: false
+strongswan_connections: {}

handlers/main.yml

@@ -0,0 +1,5 @@
+---
+- name: restart strongswan
+  ansible.builtin.service:
+    name: ipsec
+    state: restarted

meta/main.yml

@@ -0,0 +1,22 @@
+---
+galaxy_info:
+  role_name: strongswan
+  author: Adrien Waksberg
+  company: Adrien Waksberg
+  description: Install and configure an IPSEC server with strongswan
+  license: nolicense
+  min_ansible_version: 2.10
+
+  platforms:
+    - name: Debian
+      versions:
+        - buster
+        - bullseye
+
+  galaxy_tags:
+    - strongswan
+    - ipsec
+    - tunnel
+    - vpn
+
+dependencies: []

molecule/default/converge.yml

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+---
+- name: Converge
+  hosts: all
+  roles:
+    - ansible-role-strongswan
+  vars:
+    strongswan_connections:
+      test-ipsec:
+        left: '{{ ansible_all_ipv4_addresses[0] }}'
+        leftsubnet: 10.0.0.0/24
+        right: 192.168.0.2
+        rightsubnet: 10.1.0.0/24
+        psk: secret
+  pre_tasks:
+    - name: update apt cache
+      ansible.builtin.apt:
+        update_cache: true

molecule/default/molecule.yml

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+---
+driver:
+  name: docker
+platforms:
+  - name: debian11
+    image: nishiki/debian11:molecule
+    privileged: true
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    command: /lib/systemd/systemd
+    capabilities:
+      - SYS_ADMIN
+  - name: debian10
+    image: nishiki/debian10:molecule
+    privileged: true
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    command: /lib/systemd/systemd
+    capabilities:
+      - SYS_ADMIN
+lint: |
+  set -e
+  yamllint .
+  ansible-lint .
+verifier:
+  name: testinfra

molecule/default/tests/test_default.py

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+import testinfra.utils.ansible_runner
+
+def test_packages(host):
+  package = host.package('strongswan')
+  assert package.is_installed
+
+def test_config_file(host):
+  config = host.file('/etc/ipsec.conf')
+  assert config.exists
+  assert config.is_file
+  assert config.user == 'root'
+  assert config.group == 'root'
+  assert config.mode == 0o644
+  assert config.contains('aggressive=no')
+  assert config.contains('ikelifetime=10800s')
+  assert config.contains('conn test-ipsec')
+  assert config.contains('right=192.168.0.2')
+
+def test_secret_file(host):
+  config = host.file('/etc/ipsec.secrets')
+  assert config.exists
+  assert config.is_file
+  assert config.user == 'root'
+  assert config.group == 'root'
+  assert config.mode == 0o600
+  assert config.contains(' 192.168.0.2 : PSK "secret"')
+
+def test_service(host):
+  service = host.service('ipsec')
+  assert service.is_running
+  assert service.is_enabled
+
+def test_socket(host):
+  socket = host.socket('udp://0.0.0.0:500')
+  assert socket.is_listening
+
+def test_ipsec(host):
+  cmd = host.run('ipsec status test-ipsec')
+  assert cmd.succeeded
+  assert 'no match' not in cmd.stdout

tasks/main.yml

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+---
+- name: install package
+  ansible.builtin.package:
+    name:
+      - strongswan
+  tags: strongswan
+
+- name: copy configuration
+  ansible.builtin.template:
+    src: ipsec.conf.j2
+    dest: /etc/ipsec.conf
+    owner: root
+    group: root
+    mode: 0644
+  notify: restart strongswan
+  tags: strongswan
+
+- name: copy secret configuration
+  ansible.builtin.template:
+    src: ipsec.secrets.j2
+    dest: /etc/ipsec.secrets
+    owner: root
+    group: root
+    mode: 0600
+  notify: restart strongswan
+  tags: strongswan
+
+- name: enable and start service
+  ansible.builtin.service:
+    name: ipsec
+    enabled: true
+    state: started
+  tags: strongswan

templates/ipsec.conf.j2

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+# {{ ansible_managed }}
+
+config setup
+  charondebug=all
+
+conn %default
+{% for default_option, default_value in strongswan_default_config.items() %}
+  {{ default_option }}={% if default_value is sameas true %}yes
+{% elif default_value is sameas false %}no
+{% else %}{{ default_value }}
+{% endif %}
+{% endfor %}
+{% for conn_name, conn_options in strongswan_connections.items() %}
+
+conn {{ conn_name }}
+{% for conn_option, conn_value in conn_options.items() %}
+{% if conn_option != 'psk' %}
+  {{ conn_option }}={% if conn_value is sameas true %}yes
+{% elif conn_value is sameas false %}no
+{% else %}{{ conn_value }}
+{% endif %}
+{% endif %}
+{% endfor %}
+{% endfor %}

templates/ipsec.secrets.j2

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+# {{ ansible_managed }}
+
+{% for conn_value in strongswan_connections.values() %}
+{{ conn_value.left }} {{ conn_value.right }} : PSK "{{ conn_value.psk }}"
+{% endfor %}