---

- hosts: localhost
  gather_facts: False
  vars_files:
    - config.cfg

  tasks:
    - name: Add the server to the vpn-host group
      add_host:
        hostname: "{{ server_ip }}"
        groupname: vpn-host
        ansible_ssh_user: "{{ server_user }}"
        ansible_python_interpreter: "/usr/bin/python2.7"
        ssh_tunneling_enabled: "{{ ssh_tunneling_enabled }}"
        easyrsa_CA_password: "{{ easyrsa_CA_password }}"
        IP_subject: "{{ IP_subject }}"
        ansible_ssh_private_key_file: "{{ SSH_keys.private }}"

    - name: Wait until SSH becomes ready...
      local_action:
        module: wait_for
        port: 22
        host: "{{ server_ip }}"
        search_regex: "OpenSSH"
        delay: 10
        timeout: 320
        state: present
      become: false

- name: User management
  hosts: vpn-host
  gather_facts: true
  become: true
  vars_files:
    - config.cfg
    - roles/vpn/defaults/main.yml

  pre_tasks:
    - name: Common pre-tasks
      include: playbooks/common.yml

  roles:
    - { role: ssh_tunneling, tags: [ 'ssh_tunneling' ], when: ssh_tunneling_enabled is defined and ssh_tunneling_enabled == "y" }

  tasks:

    - name: Gather Facts
      setup:

    - name: Checking the signature algorithm
      local_action: >
          shell openssl x509 -text -in certs/{{ IP_subject_alt_name }}.crt  | grep 'Signature Algorithm' | head -n1
      become: no
      register: sig_algo
      args:
        chdir: "configs/{{ IP_subject_alt_name }}/pki/"

    - name: Change the algorithm to RSA
      set_fact:
        algo_params: "rsa:2048"
      when: '"ecdsa" not in sig_algo.stdout'

    - name: Build the client's pair
      local_action: >
        shell openssl req -utf8 -new -newkey {{ algo_params | default('ec:ecparams/prime256v1.pem') }} -config openssl.cnf -keyout private/{{ item }}.key -out reqs/{{ item }}.req -nodes -passin pass:"{{ easyrsa_CA_password }}" -subj "/CN={{ item }}" -batch &&
          openssl ca -utf8 -in reqs/{{ item }}.req -out certs/{{ item }}.crt -config openssl.cnf -days 3650 -batch -passin pass:"{{ easyrsa_CA_password }}" -subj "/CN={{ item }}" &&
          touch certs/{{ item }}_crt_generated
      become: no
      args:
        chdir: "configs/{{ IP_subject_alt_name }}/pki/"
        creates: certs/{{ item }}_crt_generated
      environment:
        subjectAltName: "DNS:{{ item }}"
      with_items: "{{ users }}"

    - name: Build the client's p12
      local_action: >
        shell openssl pkcs12 -in certs/{{ item }}.crt -inkey private/{{ item }}.key -export -name {{ item }} -out private/{{ item }}.p12 -certfile cacert.pem -passout pass:"{{ easyrsa_p12_export_password }}"
      become: no
      args:
        chdir: "configs/{{ IP_subject_alt_name }}/pki/"
      with_items: "{{ users }}"

    - name: Copy the p12 certificates
      local_action:
        module: copy
        src: "configs/{{ IP_subject_alt_name }}/pki/private/{{ item }}.p12"
        dest: "configs/{{ IP_subject_alt_name }}/{{ item }}.p12"
        mode: 0600
      become: no
      with_items:
        - "{{ users }}"

    - name: Get active users
      local_action: >
        shell grep ^V index.txt | grep -v "{{ IP_subject_alt_name }}" | awk '{print $5}' | sed 's/\/CN=//g'
      become: no
      args:
        chdir: "configs/{{ IP_subject_alt_name }}/pki/"
      register: valid_certs

    - name: Revoke non-existing users
      local_action: >
        shell openssl ca -config openssl.cnf -passin pass:"{{ easyrsa_CA_password }}" -revoke certs/{{ item }}.crt &&
          openssl ca -gencrl -config openssl.cnf -passin pass:"{{ easyrsa_CA_password }}" -revoke certs/{{ item }}.crt -out crl/{{ item }}.crt
          touch crl/{{ item }}_revoked
      become: no
      args:
        chdir: "configs/{{ IP_subject_alt_name }}/pki/"
        creates: crl/{{ item }}_revoked
      environment:
        subjectAltName: "DNS:{{ item }}"
      when: item not in users
      with_items: "{{ valid_certs.stdout_lines }}"

    - name: Copy the revoked certificates to the vpn server
      copy:
        src: configs/{{ IP_subject_alt_name }}/pki/crl/{{ item }}.crt
        dest: "{{ config_prefix|default('/') }}etc/ipsec.d/crls/{{ item }}.crt"
      when: item not in users
      with_items: "{{ valid_certs.stdout_lines }}"
      notify:
        - rereadcrls

    - name: Register p12 PayloadContent
      local_action: >
        shell cat private/{{ item }}.p12 | base64
      register:  PayloadContent
      become: no
      args:
        chdir: "configs/{{ IP_subject_alt_name }}/pki/"
      with_items: "{{ users }}"

    - name: Set facts for mobileconfigs
      set_fact:
        proxy_enabled: false
        PayloadContentCA: "{{ lookup('file' , 'configs/{{ IP_subject_alt_name }}/pki/cacert.pem')|b64encode }}"

    - name: Build the mobileconfigs
      local_action:
        module: template
        src: roles/vpn/templates/mobileconfig.j2
        dest: configs/{{ IP_subject_alt_name }}/{{ item.0 }}.mobileconfig
        mode: 0600
      become: no
      with_together:
        - "{{ users }}"
        - "{{ PayloadContent.results }}"
      no_log: True

    - name: Build the client ipsec config file
      local_action:
        module: template
        src: roles/vpn/templates/client_ipsec.conf.j2
        dest: configs/{{ IP_subject_alt_name }}/ipsec_{{ item }}.conf
        mode: 0600
      become: no
      with_items:
        - "{{ users }}"

    - name: Build the client ipsec secret file
      local_action:
        module: template
        src: roles/vpn/templates/client_ipsec.secrets.j2
        dest: configs/{{ IP_subject_alt_name }}/ipsec_{{ item }}.secrets
        mode: 0600
      become: no
      with_items:
        - "{{ users }}"

    - name: Build the windows client powershell script
      local_action:
        module: template
        src: roles/vpn/templates/client_windows.ps1.j2
        dest: configs/{{ IP_subject_alt_name }}/windows_{{ item }}.ps1
        mode: 0600
      become: no
      when: Win10_Enabled is defined and Win10_Enabled == "Y"
      with_items: "{{ users }}"

    # SSH

    - name: SSH | Get active system users
      shell: >
        getent group algo | cut -f4 -d: | sed "s/,/\n/g"
      register: valid_users
      when: ssh_tunneling_enabled is defined and ssh_tunneling_enabled == "y"

    - name: SSH | Delete non-existing users
      user:
        name: "{{ item }}"
        state: absent
        remove: yes
        force: yes
      when: item not in users and ssh_tunneling_enabled is defined and ssh_tunneling_enabled == "y"
      with_items: "{{ valid_users.stdout_lines | default('null') }}"

  post_tasks:
    - debug:
        msg:
          - "{{ congrats.common.split('\n') }}"
          - "    {{ congrats.p12_pass }}"
      tags: always

  handlers:
    - name: rereadcrls
      shell: ipsec rereadcrls