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First things first, the required packages:

- name: Install required packages
  apt: name={{ item }} state=present
  with_items:
    - openhab2-addons
    - openhab2-addons-legacy
    - libhttpclient-java

The "fritzboxtr0641" binding needs special configuration. Also legacy bindings need to be activated in order for this binding to show up.

- name: Update extensions configuration
  lineinfile:
    dest: /etc/openhab2/services/addons.cfg
    regexp: "{{ item.regexp }}"
    line: "{{ item.line }}"
    state: "{{ item.state }}"
    create: yes
  with_items:
    - { regexp: '^#? *package', line: 'package = expert', state: present }
    - { regexp: '^#? *remote', line: 'remote = true', state: present }
    - { regexp: '^#? *legacy', line: 'legacy = true', state: present }

Install the extension:

- name: Get list of available and installed extensions
  uri:
    url: "http://{{ ansible_host }}:8080/rest/extensions"
  register: oh2_extensions
  changed_when: false


- name: Install extensions
  uri:
    url: "http://{{ ansible_host }}:8080/rest/extensions/{{ item }}/install"
    method: POST
  when: "not (oh2_extensions.json|byattr('id', item))[0].installed"
  with_items:
    - binding-fritzboxtr0641
  register: oh2_install_extensions

The extension comes with a configuration file, which holds access credentials to access the Fritz!Box. It is strongly recommended to create a separate account on the Fritz!Box, and not use the admin account here.

- name: Read openhab user
  set_fact:
    fritzbox_user: "{{ item }}"
  with_file:
    - "{{ playbook_dir }}/credentials/fritzbox-openhab-user.txt"

- name: Update fritzboxtr064.cfg
  lineinfile:
    dest: /etc/openhab2/services/fritzboxtr064.cfg
    regexp: "{{ item.regexp }}"
    line: "{{ item.line }}"
    state: "{{ item.state }}"
    create: yes
  with_items:
    - { regexp: '^#? *url', line: 'url=http://{{ fritzbox_ip }}:49000', state: present }
    - { regexp: '^#? *user', line: 'user={{ fritzbox_user }}', state: present }
    - { regexp: '^#? *pass', line: 'pass={{ lookup('password', playbook_dir + '/credentials/fritzbox-openhab-pass.txt') }}', state: present }

At some point the extension shows up in the openHAB Inbox. From there it must be approved:

- name: Get inbox
  uri:
    url: "http://{{ ansible_host }}:8080/rest/inbox"
  register: oh2_inbox
  changed_when: false


- name: Auto-approve certain inbox items
  uri:
    url: "{{ oh2_inbox.url }}/{{ item.thingUID }}/approve"
    method: POST
  when: item.flag == "NEW" and item.thingTypeUID == "avmfritz:fritzbox"
  loop: "{{ oh2_inbox.json }}"

The Fritz!Box can not yet be used, the openHAB configuration is missing. That is a bit ugly, because a JSON object must be send to the server, and plenty of escaping is required. Also the credentials are read from two files (can also come from a Vault) in order not to store them directly in the Playbook.

- name: Read openhab user
  set_fact:
    fritzbox_user: "{{ item }}"
  with_file:
    - "{{ playbook_dir }}/credentials/fritzbox-openhab-user.txt"


- name: Initialize FRITZ!Box configuration
  uri:
    url: "{{ o2_things.url }}/{{ item.UID | urlencode }}/config"
    body: "{ \"syncTimeout\"{{':'}} \"{{ item.configuration.syncTimeout }}\", \"protocol\"{{':'}} \"http\", \"password\"{{':'}} \"{{ lookup('password', playbook_dir + '/credentials/fritzbox-openhab-pass.txt') }}\", \"asyncTimeout\"{{':'}} \"{{ item.configuration.asyncTimeout }}\", \"ipAddress\"{{':'}} \"{{ item.configuration.ipAddress }}\", \"pollingInterval\"{{':'}} \"{{ item.configuration.pollingInterval }}\", \"user\"{{':'}} \"{{ fritzbox_user }}\" }"
    body_format: json
    method: PUT
  when: item.thingTypeUID == "avmfritz:fritzbox" and item.statusInfo.status == "UNINITIALIZED"
  loop: "{{ o2_things.json }}"
  loop_control:
    label: "{{ item.thingTypeUID }} - {{ item.UID }}"


- name: Update FRITZ!Box configuration
  uri:
    url: "{{ o2_things.url }}/{{ item.UID | urlencode }}/config"
    body: "{ \"syncTimeout\"{{':'}} \"{{ item.configuration.syncTimeout }}\", \"protocol\"{{':'}} \"http\", \"password\"{{':'}} \"{{ lookup('password', playbook_dir + '/credentials/fritzbox-openhab-pass.txt') }}\", \"asyncTimeout\"{{':'}} \"{{ item.configuration.asyncTimeout }}\", \"ipAddress\"{{':'}} \"{{ item.configuration.ipAddress }}\", \"pollingInterval\"{{':'}} \"{{ item.configuration.pollingInterval }}\", \"user\"{{':'}} \"{{ fritzbox_user }}\" }"
    body_format: json
    method: PUT
  when: item.thingTypeUID == "avmfritz:fritzbox" and item.statusInfo.status == "ONLINE" and item.configuration.user != fritzbox_user
  loop: "{{ o2_things.json }}"
  loop_control:
    label: "{{ item.thingTypeUID }} - {{ item.UID }}"

The first "Initialize" step is only run the first time. It will configure the Fritz!Box extension. The second "Update" step is run every time the credentials change.

After a few seconds all the Fritz!Box adapters will show up in openHAB.