- name: Ensure bind9 installed
  apt:
    name: bind9
    state: present

- name: Modify OPTIONS in /etc/default/bind9
  replace:
    dest: /etc/default/bind9
    regexp: '^OPTIONS.*'
    replace: 'OPTIONS="-u bind -t {{ bind_chroot_root }}"'

- name: Create systemd service
  file:
    path: "{{ bind_systemd_service_path }}"
    owner: root
    group: root
    mode: "0644"
    state: touch
  register: create_bind_systemd

- name: "Fill out systemd service"
  blockinfile:
    dest: "{{ bind_systemd_service_path }}"
    block: |
      [Unit]
      Description=BIND Domain Name Server
      Documentation=man:named(8)
      After=network.target

      [Service]
      EnvironmentFile=-/etc/default/bind9
      ExecStart=/usr/sbin/named -f $OPTIONS
      ExecReload=/usr/sbin/rndc reload
      ExecStop=/usr/sbin/rndc stop

      [Install]
      WantedBy=multi-user.target
  when: create_bind_systemd | changed

- name: Create directories
  file:
    path: "{{ bind_chroot_root }}/{{ item }}"
    state: directory
    owner: bind
    group: bind
    mode: "0700"
    recurse: yes
  with_items:
  - bin
  - dev
  - etc
  - lib
  - usr/lib
  - usr/sbin
  - var/cache/bind
  - var/log
  - var/run/bind/run
  register: create_bind_dir

- name: Stat /etc/bind
  stat:
    path: "/etc/bind"
  register: bind_stat

- name: Move /etc/bind in chroot
  command: "mv /etc/bind/ {{ bind_chroot_root }}/etc/"
  when: bind_stat.stat.exists and not bind_stat.stat.islnk

- name: Create symlink
  file:
    src:  "{{ bind_chroot_root }}/etc/bind"
    dest: "/etc/bind"
    state: link

- name: Create log file
  file:
    path: "{{ bind_chroot_root }}/var/log/bind.log"
    state: touch
    mode: "0640"
    owner: bind
    group: bind

- name: Create log symlink
  file:
    src:  "{{ bind_chroot_root }}/var/log/bind.log"
    dest: "/var/log/bind.log"
    state: link

- name: Create run directory
  file:
    path: "/var/run/bind/run"
    state: directory
    owner: root
    group: bind
    mode: "0770"
    recurse: yes

- name: "Stat var/run/bind/run/named in chroot"
  stat:
    path: "{{ bind_chroot_root }}/var/run/bind/run/named"
  register: named_run

- name: "Clean var/run/bind/run/named in chroot"
  file:
    state: absent
    path: "{{ bind_chroot_root }}/var/run/bind/run/named"
  when: named_run.stat.isdir

- name: Clean /var/run/bind/run/named.pid
  file:
    state: absent
    path: "/var/run/bind/run/named.pid"
  when: named_run.stat.isdir

- name: Stat /var/run/bind/run/named.pid
  stat:
    path: "/var/run/bind/run/named.pid"
  register: named_pid

- name: Cat pid content
  command: cat /var/run/bind/run/named.pid > {{ bind_chroot_root }}/var/run/bind/run/named.pid
  when: named_pid.stat.isreg == True and not named_pid.stat.islnk

- name: Clean /var/run/bind/run/named.pid
  file:
    state: absent
    path: "/var/run/bind/run/named.pid"
  when: named_pid.stat.isreg == True and not named_pid.stat.islnk

- name: Clean /var/run/bind/run/named.pid
  file:
    state: absent
    path: "/var/run/bind/run/named.pid"
  when: not named_pid.stat.islnk

- name: Create pid symlink in chroot
  file:
    src:  "{{ bind_chroot_root }}/var/run/bind/run/named.pid"
    dest: "/var/run/bind/run/named.pid"
    state: link
  when: not named_pid.stat.islnk

- name: "Stat dev/random in chroot"
  stat:
    path: "{{ bind_chroot_root }}/dev/random"
  register: named_random

- name: mknod dev/random in chroot
  command: mknod {{ bind_chroot_root }}/dev/random c 1 3; chmod 666 {{ bind_chroot_root }}/dev/random
  when: not named_random.stat.exists

- name: Copy essential libs
  command: for i in `ldd $(which named) | grep -v linux-vdso.so.1 | cut -d">" -f2 | cut -d"(" -f1` /usr/lib/x86_64-linux-gnu/openssl-1.0.0/engines/libgost.so; do install -D $i {{ bind_chroot_root }}/${i##/} done
  when: create_bind_dir | changed

- name: Copy bind
  copy:
    src: /usr/sbin/named
    dest: {{ bind_chroot_root }}/usr/sbin/
    remote_src: True

- name: Set the good rights
  command: chown -R bind:bind {{ bind_chroot_root }}/