---
# Tasks file for the traefik role

# Infrastructure
# Ansible instructions to deploy the infrastructure
# Copyright (C) 2019-2020  Christoph (Sheogorath) Kern
# Copyright (C) 2020       Alexander Wellbrock
# Copyright (C) 2020       Saibotk
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

- name: Update default SELinux contexts
  community.general.sefcontext:
    target: '{{ item }}(/.*)?'
    setype: "container_file_t"
    selevel: "{{ traefik_selinux_level }}"
    state: present
  with_items:
    - "{{ traefik_acme_location }}"
    - "{{ traefik_config_location }}"
  when:
    - traefik_selinux_enabled
  become: true

- name: Create install directory
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    mode: '0700'
    owner: 'root'
    group: 'root'
  with_items:
    - "{{ traefik_install_location }}"
  become: true

- name: Create data directory
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    mode: '0700'
    owner: 'root'
    group: 'root'
    setype: "container_file_t"
    selevel: "{{ traefik_selinux_level }}"
  with_items:
    - "{{ traefik_acme_location }}"
    - "{{ traefik_config_location }}"
  become: true

- name: Include configs for Tor
  ansible.builtin.include_tasks: tor.yml
  when: traefik_tor_enabled | bool

- name: Include configs for acme-dumper
  ansible.builtin.include_tasks: acmedumper.yml
  when: traefik_acmedumper_enabled | bool

- name: Create proxy network
  community.docker.docker_network:
    name: "{{ proxy_network }}"
    driver_options:
      com.docker.network.bridge.name: "{{ traefik_docker_bridge_name }}"
  become: true

- name: Create ipv6 frontend network
  community.docker.docker_network:
    name: "{{ traefik_ipv6.name }}"
    enable_ipv6: true
    ipam_config:
      - subnet: "{{ traefik_ipv6.subnet }}"
  become: true
  when:
    - traefik_ipv6 is defined
    - traefik_ipv6.enabled

- name: Gather the package facts
  ansible.builtin.package_facts:
    manager: auto

# This step is only needed in docker < 20.10, as docker does this by default now
- name: Trust our proxy network
  ansible.posix.firewalld:
    zone: trusted
    interface: "{{ traefik_docker_bridge_name }}"
    permanent: true
    immediate: true
    state: enabled
  become: true
  tags:
    - firewall
  when:
    - traefik_firewalld_enabled
    - docker_package in ansible_facts.packages
    - ansible_facts.packages[docker_package][0].version is version('20.10', '<')

- name: Deploy dynamic_conf.yml
  ansible.builtin.template:
    src: dynamic_conf.yml
    dest: "{{ traefik_config_location }}/dynamic_conf.yml"
    owner: 'root'
    group: 'root'
    mode: '0600'
    setype: "container_file_t"
    selevel: "{{ traefik_selinux_level }}"
  become: true
  when:
    - traefik_dynamic_conf != omit

- name: Deploy docker-compose.yml
  ansible.builtin.template:
    src: docker-compose.yml
    dest: "{{ traefik_install_location }}/docker-compose.yml"
    mode: '0600'
    owner: 'root'
    group: 'root'
    validate: docker-compose -f %s config -q
  tags:
    - docker
  become: true

- name: Compose traefik
  community.docker.docker_compose:
    state: present
    project_src: "{{ traefik_install_location }}"
    pull: true
    remove_orphans: true
  become: true

- name: Read tor hostname
  ansible.builtin.slurp:
    src: "{{ traefik_tor_data_location }}/traefik/hostname"
  register: proxy_hiddenservice
  become: true
  when: traefik_tor_enabled | bool

- name: Allow access to services
  ansible.posix.firewalld:
    service: "{{ item }}"
    permanent: true
    state: enabled
  with_items:
    - http
    - https
  become: true
  when:
    - traefik_firewalld_enabled
  tags:
    - firewall

# NOTE: This rule does not care about new / old ip values, so removal must be made by hand!
- name: Configure firewalld to allow IPv6 traffic for HTTP/HTTPS
  ansible.builtin.command:
    argv:
      - firewall-cmd
      - --direct
      - --add-rule
      - ipv6
      - filter
      - FORWARD
      - 0
      - -p
      - tcp
      - --destination
      - "{{ traefik_ipv6.ip_addr | default('2001:db8::') | ansible.utils.ipaddr('address') }}/128"
      - --dport
      - "{{ item }}"
      - -j
      - ACCEPT
  register: firewalld_direct_result
  become: true
  changed_when: '"ALREADY_ENABLED" not in firewalld_direct_result.stderr'
  notify: restart docker
  with_items:
    - 80
    - 443
  when:
    - traefik_firewalld_enabled
    - traefik_ipv6 is defined
    - traefik_ipv6.enabled
    - traefik_ipv6.ip_addr is defined
    - traefik_ipv6.firewall_rules_enabled is defined and traefik_ipv6.firewall_rules_enabled

# NOTE: This rule does not care about new / old ip values, so removal must be made by hand!
- name: Configure firewalld to allow IPv6 traffic for HTTP/HTTPS
  ansible.builtin.command:
    argv:
      - firewall-cmd
      - --permanent
      - --direct
      - --add-rule
      - ipv6
      - filter
      - FORWARD
      - 0
      - -p
      - tcp
      - --destination
      - "{{ traefik_ipv6.ip_addr | default('2001:db8::') | ansible.utils.ipaddr('address') }}/128"
      - --dport
      - "{{ item }}"
      - -j
      - ACCEPT
  register: firewalld_direct_permanent_result
  become: true
  changed_when: '"ALREADY_ENABLED" not in firewalld_direct_permanent_result.stderr'
  with_items:
    - 80
    - 443
  when:
    - traefik_firewalld_enabled
    - traefik_ipv6 is defined
    - traefik_ipv6.enabled
    - traefik_ipv6.ip_addr is defined
    - traefik_ipv6.firewall_rules_enabled is defined and traefik_ipv6.firewall_rules_enabled