algo/roles/vpn/tasks/main.yml

- name: Gather Facts
  setup:

- name: Install StrongSwan
  apt: name=strongswan state=latest update_cache=yes

- name: Enforcing ipsec with apparmor
  shell: aa-enforce "{{ item }}"
  with_items:
    - /usr/lib/ipsec/charon
    - /usr/lib/ipsec/lookip
    - /usr/lib/ipsec/stroke
  notify:
    - restart apparmor

- name: Enable services
  service: name={{ item }} enabled=yes
  with_items:
    - apparmor
    - strongswan
    - netfilter-persistent

- name: Configure iptables so IPSec traffic can traverse the tunnel
  iptables: table=nat chain=POSTROUTING source="{{ vpn_network }}" jump=MASQUERADE
  when: (security_enabled is not defined) or
        (security_enabled is defined and security_enabled != "y")
  notify:
    - save iptables

- name: Configure ip6tables so IPSec traffic can traverse the tunnel
  iptables: ip_version=ipv6 table=nat chain=POSTROUTING source="{{ vpn_network_ipv6 }}" jump=MASQUERADE
  when: (security_enabled is not defined) or
        (security_enabled is defined and security_enabled != "y")
  notify:
    - save iptables

- name: Ensure that the strongswan group exist
  group: name=strongswan state=present

- name: Ensure that the strongswan user exist
  user: name=strongswan group=strongswan state=present

- name: Ensure that the strongswan service directory exist
  file: path=/etc/systemd/system/strongswan.service.d/ state=directory mode=0755  owner=root group=root

- name: Setup the cgroup limitations for the ipsec daemon
  template: src=100-CustomLimitations.conf.j2 dest=/etc/systemd/system/strongswan.service.d/100-CustomLimitations.conf
  notify:
    - daemon-reload
    - restart strongswan

- meta: flush_handlers

- name: Setup the strongswan.conf file from our template
  template: src=strongswan.conf.j2 dest=/etc/strongswan.conf owner=root group=root mode=0644
  notify:
    - restart strongswan

- name: Setup the ipsec.conf file from our template
  template: src=ipsec.conf.j2 dest=/etc/ipsec.conf owner=root group=root mode=0644
  notify:
    - restart strongswan

- name: Setup the ipsec.secrets file
  template: src=ipsec.secrets.j2 dest=/etc/ipsec.secrets owner=strongswan group=root mode=0600
  notify:
    - restart strongswan

- name: Fetch easy-rsa-ipsec from git
  git: repo=git://github.com/ValdikSS/easy-rsa-ipsec.git version=ed4de10d7ce0726357fb1bb4729f8eb440c06e2b dest="{{ easyrsa_dir }}"

- name: Setup the vars file from our template
  template: src=easy-rsa.vars.j2 dest={{ easyrsa_dir }}/easyrsa3/vars

- name: Ensure the pki directory is not exist
  file: dest={{ easyrsa_dir }}/easyrsa3/pki state=absent
  when: easyrsa_reinit_existent == True

- name: Build the pki enviroments
  shell: >
    ./easyrsa init-pki &&
    touch '{{ easyrsa_dir }}/easyrsa3/pki/pki_initialized'
  args:
    chdir: '{{ easyrsa_dir }}/easyrsa3/'
    creates: '{{ easyrsa_dir }}/easyrsa3/pki/pki_initialized'

- name: Build the CA pair
  shell: >
    ./easyrsa build-ca nopass &&
    touch {{ easyrsa_dir }}/easyrsa3/pki/ca_initialized
  args:
    chdir: '{{ easyrsa_dir }}/easyrsa3/'
    creates: '{{ easyrsa_dir }}/easyrsa3/pki/ca_initialized'
  notify:
    - restart strongswan

- name: Build the server pair
  shell: >
    ./easyrsa --subject-alt-name='DNS:{{ IP_subject_alt_name }},IP:{{ IP_subject_alt_name }}' build-server-full {{ IP_subject_alt_name }} nopass&&
    touch '{{ easyrsa_dir }}/easyrsa3/pki/server_initialized'
  args:
    chdir: '{{ easyrsa_dir }}/easyrsa3/'
    creates: '{{ easyrsa_dir }}/easyrsa3/pki/server_initialized'
  notify:
    - restart strongswan

- name: Build the client's pair
  shell: >
    ./easyrsa build-client-full {{ item }} nopass &&
    touch '{{ easyrsa_dir }}/easyrsa3/pki/{{ item }}_initialized'
  args:
    chdir: '{{ easyrsa_dir }}/easyrsa3/'
    creates: '{{ easyrsa_dir }}/easyrsa3/pki/{{ item }}_initialized'
  with_items: "{{ users }}"

- name: Build the client's p12
  shell: >
    openssl pkcs12 -in {{ easyrsa_dir }}/easyrsa3//pki/issued/{{ item }}.crt -inkey {{ easyrsa_dir }}/easyrsa3//pki/private/{{ item }}.key -export -name {{ item }} -out /{{ easyrsa_dir }}/easyrsa3//pki/private/{{ item }}.p12 -certfile {{ easyrsa_dir }}/easyrsa3//pki/ca.crt -passout pass:{{ easyrsa_p12_export_password }} &&
    touch '{{ easyrsa_dir }}/easyrsa3/pki/{{ item }}_p12_initialized'
  args:
    chdir: '{{ easyrsa_dir }}/easyrsa3/'
    creates: '{{ easyrsa_dir }}/easyrsa3/pki/{{ item }}_p12_initialized'
  with_items: "{{ users }}"

- name: Copy the CA cert to the strongswan directory
  copy: remote_src=True src='{{ easyrsa_dir }}/easyrsa3/pki/ca.crt' dest=/etc/ipsec.d/cacerts/ca.crt owner=strongswan group=root mode=0600
  notify:
    - restart strongswan

- name: Copy the server cert to the strongswan directory
  copy: remote_src=True src='{{ easyrsa_dir }}/easyrsa3/pki/issued/{{ IP_subject_alt_name }}.crt' dest=/etc/ipsec.d/certs/{{ IP_subject_alt_name }}.crt owner=strongswan group=root mode=0600
  notify:
    - restart strongswan

- name: Copy the server key to the strongswan directory
  copy: remote_src=True src='{{ easyrsa_dir }}/easyrsa3/pki/private/{{ IP_subject_alt_name }}.key' dest=/etc/ipsec.d/private/{{ IP_subject_alt_name }}.key owner=strongswan group=root mode=0600
  notify:
    - restart strongswan

- name: Register p12 PayloadContent
  shell: >
    cat /{{ easyrsa_dir }}/easyrsa3//pki/private/{{ item }}.p12 | base64
  register:  PayloadContent
  with_items: "{{ users }}"

- name: Register CA PayloadContent
  shell: >
    cat /{{ easyrsa_dir }}/easyrsa3/pki/ca.crt | base64
  register:  PayloadContentCA

- name: Build the mobileconfigs
  template: src=mobileconfig.j2 dest=/{{ easyrsa_dir }}/easyrsa3//pki/private/{{ item.0 }}.mobileconfig mode=0600
  with_together:
    - "{{ users }}"
    - "{{ PayloadContent.results }}"
  no_log: True

- name: Fetch users P12
  fetch: src=/{{ easyrsa_dir }}/easyrsa3//pki/private/{{ item }}.p12 dest=configs/{{ IP_subject_alt_name }}_{{ item }}.p12 flat=yes
  with_items: "{{ users }}"

- name: Fetch users mobileconfig
  fetch: src=/{{ easyrsa_dir }}/easyrsa3//pki/private/{{ item }}.mobileconfig dest=configs/{{ IP_subject_alt_name }}_{{ item }}.mobileconfig flat=yes
  with_items: "{{ users }}"

- name: Restrict permissions
  file: path="{{ item }}" state=directory mode=0700  owner=strongswan group=root
  with_items:
    - /etc/ipsec.d/private

- name: Fetch server CA certificate
  fetch: src=/{{ easyrsa_dir }}/easyrsa3/pki/ca.crt dest=configs/{{ IP_subject_alt_name }}_ca.crt flat=yes
  notify:
    - congrats