# roles/bind/tasks/main.yml
---

# Initialise distribution-specific variables
- name: Source specific variables
  include_vars: "{{ item }}"
  with_first_found:
    - "{{ ansible_distribution }}.yml"
    - "{{ ansible_os_family }}.yml"
  tags: bind

- name: Check whether `bind_zone_master_server_ip` was set
  assert:
    that: bind_zone_master_server_ip is defined

- name: Install BIND
  package:
    pkg: "{{ item }}"
    state: present
  with_items:
    - "{{ bind_packages }}"
  tags: bind

- name: Ensure runtime directories referenced in config exist
  file:
    path: "{{ item }}"
    state: directory
    owner: "{{ bind_owner }}"
    group: "{{ bind_group }}"
    mode: 0770
  with_items:
    - "{{ bind_dir }}/dynamic"
    - "{{ bind_dir }}/data"
    - "{{ bind_zone_dir }}"
  tags: bind

- name: Create serial, based on UTC UNIX time
  command: date -u +%s
  register: timestamp
  changed_when: false
  run_once: true
  check_mode: false
  tags: bind

- name: Read forward zone hashes
  shell: 'grep -s "^; Hash:" {{ bind_zone_dir }}/{{ item.name }} || true'
  changed_when: false
  check_mode: false
  register: forward_hashes_temp
  with_items:
    - "{{ bind_zone_domains }}"

- name: create dict of forward hashes
  set_fact:
    forward_hashes: "{{ forward_hashes|default([]) + [ {'hash': item.stdout|default(), 'name': item.item.name} ] }}"
  with_items:
    - "{{ forward_hashes_temp.results }}"


- name: Read reverse ipv4 zone hashes
  shell: "grep -s \"^; Hash:\" {{ bind_zone_dir }}/{{ ('.'.join(item.1.replace(item.1+'.','').split('.')[::-1])) }}.in-addr.arpa || true"
  changed_when: false
  check_mode: false
  register: reverse_hashes_temp
  with_subelements:
    - "{{ bind_zone_domains }}"
    - networks
    - flags:
      skip_missing: true

- name: create dict of reverse hashes
  set_fact:
    reverse_hashes: "{{ reverse_hashes|default([]) + [ {'hash': item.0.stdout|default(), 'network': item.1} ] }}"
  with_subelements:
    - "{{ reverse_hashes_temp.results }}"
    - item

- name: Read reverse ipv6 zone hashes
  shell: "grep -s \"^; Hash:\" {{ bind_zone_dir }}/{{ (item.1 | ipaddr('revdns'))[-(9+(item.1|regex_replace('^.*/','')|int)//2):-1] }} || true"
  changed_when: false
  check_mode: false
  register: reverse_hashes_ipv6_temp
  with_subelements:
    - "{{ bind_zone_domains }}"
    - ipv6_networks
    - flags:
      skip_missing: true

- name: create dict of reverse ipv6 hashes
  set_fact:
    reverse_hashes_ipv6: "{{ reverse_hashes_ipv6|default([]) + [ {'hash': item.0.stdout|default(), 'network': item.1} ] }}"
  with_subelements:
    - "{{ reverse_hashes_ipv6_temp.results }}"
    - item

- name: Set up the machine as a master DNS server
  include_tasks: master.yml
  when: bind_zone_master_server_ip in ansible_all_ipv4_addresses

- name: Set up the machine as a slave DNS server
  include_tasks: slave.yml
  when: bind_zone_master_server_ip not in ansible_all_ipv4_addresses

- name: Start BIND service
  service:
    name: "{{ bind_service }}"
    state: started
    enabled: true
  tags: bind