algo/vpn.yml

---

- name: VPN Configuration
  hosts: vpn-host
  gather_facts: false
  become: true
  vars_files:
    - config.cfg    
  
  tasks:
  - 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
    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
    notify:
    - save iptables    
    
  - name: Setup the ipsec.conf file from our template
    template: src=ipsec.conf.j2 dest=/etc/ipsec.conf owner=root group=root mode=644
    notify:
    - restart strongswan  

  - name: Setup the ipsec.secrets file
    template: src=ipsec.secrets.j2 dest=/etc/ipsec.secrets owner=root group=root mode=600
    notify:
    - restart strongswan    
    
  - name: Fetch easy-rsa-ipsec from git
    git: repo=git://github.com/ValdikSS/easy-rsa-ipsec.git 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:{{ server_name }},IP:{{ ansible_ssh_host }}' build-server-full {{ ansible_ssh_host }} 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=root 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/{{ ansible_ssh_host }}.crt' dest=/etc/ipsec.d/certs/{{ ansible_ssh_host }}.crt owner=root 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/{{ ansible_ssh_host }}.key' dest=/etc/ipsec.d/private/{{ ansible_ssh_host }}.key owner=root 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/{{ server_name }}_{{ item }}.p12 flat=yes
    with_items: "{{ users }}"

  - name: Fetch users mobileconfig
    fetch: src=/{{ easyrsa_dir }}/easyrsa3//pki/private/{{ item }}.mobileconfig dest=configs/{{ server_name }}_{{ item }}.mobileconfig flat=yes
    with_items: "{{ users }}"
    
  - name: Fetch server CA certificate
    fetch: src=/{{ easyrsa_dir }}/easyrsa3/pki/ca.crt dest=configs/{{ server_name }}_ca.crt flat=yes
    
  - name: Add server to the inventory file
    local_action: lineinfile dest=inventory_users line="{{ inventory_hostname }}" insertafter='\[user-management\]\n' state=present
    become: false    
    notify:
      - congrats
    
  handlers:
    - name: restart strongswan
      service: name=strongswan state=restarted

    - name: restart apparmor
      service: name=apparmor state=restarted
      
    - name: save iptables
      command: service netfilter-persistent save      
      
    - name: congrats
      debug:
        msg:
          - "#----------------------------------------------------------------------#"
          - "#                          Congratulations!                            #"
          - "#                     Your Algo server is running.                     #"
          - "#    Config files and certificates are in the ./configs/ directory.    #"
          - "#          Go to https://www.dnsleaktest.com/ after connecting         #"
          - "#        and ensure that all your traffic passes through the VPN.      #"
          - "#----------------------------------------------------------------------#"