matrix-docker-ansible-deploy/roles/matrix-server/tasks/self_check/self_check_well_known.yml

---

- set_fact:
    well_known_url_matrix: "https://{{ hostname_matrix }}/.well-known/matrix/client"
    well_known_url_identity: "https://{{ hostname_identity }}/.well-known/matrix/client"

# These well-known files may be served without a `Content-Type: application/json` header,
# so we can't rely on the uri module's automatic parsing of JSON.
- name: Check .well-known on the matrix hostname
  uri:
    url: "{{ well_known_url_matrix }}"
    follow_redirects: false
    return_content: true
  register: result_well_known_matrix
  ignore_errors: true

- name: Fail if .well-known not working on the matrix hostname
  fail:
    msg: "Failed checking that well-known is configured at `{{ hostname_matrix }}` (checked endpoint: `{{ well_known_url_matrix }}`). Is port 443 open in your firewall? Full error: {{ result_well_known_matrix }}"
  when: "result_well_known_matrix.failed"

- name: Parse JSON for well-known payload at the matrix hostname
  set_fact:
    well_known_matrix_payload: "{{ result_well_known_matrix.content|from_json }}"

- name: Fail if .well-known not CORS-aware on the matrix hostname
  fail:
    msg: "Well-known serving for `{{ hostname_matrix }}` (checked endpoint: `{{ well_known_url_matrix }}`) is not CORS-aware. The file needs to be served with an Access-Control-Allow-Origin header set."
  when: "'access_control_allow_origin' not in result_well_known_matrix"

- name: Report working .well-known on the matrix hostname
  debug:
    msg: "well-known is configured correctly for `{{ hostname_matrix }}` (checked endpoint: `{{ well_known_url_matrix }}`)"

- name: Check .well-known on the identity hostname
  uri:
    url: "{{ well_known_url_identity }}"
    follow_redirects: false
    return_content: true
  register: result_well_known_identity
  ignore_errors: true

- name: Fail if .well-known not working on the identity hostname
  fail:
    msg: "Failed checking that well-known is configured at `{{ hostname_identity }}` (checked endpoint: `{{ well_known_url_identity }}`). Is port 443 open in your firewall? Full error: {{ result_well_known_identity }}"
  when: "result_well_known_identity.failed"

- name: Parse JSON for well-known payload at the identity hostname
  set_fact:
    well_known_identity_payload: "{{ result_well_known_identity.content|from_json }}"

- name: Fail if .well-known not CORS-aware on the identity hostname
  fail:
    msg: "Well-known serving for `{{ hostname_identity }}` (checked endpoint: `{{ well_known_url_identity }}`) is not CORS-aware. The file needs to be served with an Access-Control-Allow-Origin header set. See docs/configuring-well-known.md"
  when: "'access_control_allow_origin' not in result_well_known_identity"

# For people who manually copy the well-known file, try to detect if it's outdated
- name: Fail if well-known is different on matrix hostname and identity hostname
  fail:
    msg: "The well-known files at `{{ hostname_matrix }}` and `{{ hostname_identity }}` are different. Perhaps you copied the file manually before and now it's outdated?"
  when: "well_known_matrix_payload != well_known_identity_payload"

- name: Report working .well-known on the identity hostname
  debug:
    msg: "well-known is configured correctly for `{{ hostname_identity }}` (checked endpoint: `{{ well_known_url_identity }}`)"