webdav: add config

roles/webdav-web/meta/main.yml

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+---
+dependencies:
+  - role: caddy

roles/webdav-web/tasks/main.yml

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+---
+- name: Ensure Caddyfile is present
+  template:
+    src: 'webdav.Caddyfile.j2'
+    dest: '/etc/caddy/webdav.Caddyfile'
+    owner: root
+    group: root
+    mode: '0644'
+  notify: caddy-reload

roles/webdav-web/templates/webdav.Caddyfile.j2

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+webdav.roosens.me {
+    reverse_proxy {{ hostvars[groups['webdav'][0]].static_ip }}:8018 {
+        header_down +X-Robots-Tag "none"
+    }
+}

roles/webdav/files/webdav.data.backup.sh

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+#!/usr/bin/env bash
+
+data_dir='/mnt/data1/webdav/data'
+snapshot_dir="${data_dir}.snapshot"
+
+# Read-only snapshot for atomic backup
+btrfs subvolume snapshot -r "$data_dir" "$snapshot_dir" || exit $?
+
+/usr/local/bin/restic backup "$snapshot_dir"
+
+# Always remove snapshot subvolume, even if restic fails
+btrfs subvolume delete "$snapshot_dir"

roles/webdav/files/webdav.service

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+[Unit]
+Description=WebDAV
+After=network.target network-online.target
+Requires=network-online.target
+
+[Service]
+Type=exec
+User=webdav
+Group=webdav
+ExecStart=/usr/local/bin/webdav --config /etc/webdav/config.toml
+
+Restart=always
+
+[Install]
+WantedBy=multi-user.target

roles/webdav/handlers/main.yml

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+---
+- name: 'restart webdav'
+  ansible.builtin.service:
+    name: 'webdav'
+    state: 'restarted'

roles/webdav/tasks/main.yml

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+---
+# Download latest version of binary
+- name: Ensure download directory is present
+  ansible.builtin.file:
+    path: "/home/debian/webdav/{{ webdav_version }}"
+    state: directory
+    mode: '0755'
+
+- name: Ensure compressed binary is downloaded
+  ansible.builtin.get_url:
+    url: "https://github.com/hacdias/webdav/releases/download/v{{ webdav_version }}/linux-arm64-webdav.tar.gz"
+    dest: "/home/debian/webdav/{{ webdav_version }}/webdav-{{ webdav_version }}.tar.gz"
+  register: res
+
+- name: Ensure binary is decompressed
+  ansible.builtin.shell:
+    chdir: "/home/debian/webdav/{{ webdav_version }}"
+    cmd: "tar --extract --gzip --file webdav-{{ webdav_version }}.tar.gz"
+  when: 'res.changed'
+
+- name: Ensure binary is copied to correct location
+  ansible.builtin.copy:
+    src: "/home/debian/webdav/{{ webdav_version }}/webdav"
+    remote_src: true
+    dest: '/usr/local/bin/webdav'
+    owner: 'root'
+    group: 'root'
+    mode: '0755'
+  when: 'res.changed'
+  notify: 'restart webdav'
+
+
+# Set up system user and data directories
+- name: Ensure system group exists
+  ansible.builtin.group:
+    name: 'webdav'
+    gid: 5000
+    system: true
+    state: present
+
+- name: Ensure system user exists
+  ansible.builtin.user:
+    name: 'webdav'
+    group: 'webdav'
+    uid: 5000
+    system: true
+    create_home: false
+
+- name: Ensure data directory is present
+  ansible.builtin.file:
+    path: '/mnt/data1/webdav'
+    state: directory
+    mode: '0755'
+    owner: 'webdav'
+    group: 'webdav'
+
+- name: Ensure data subvolumes are present
+  community.general.btrfs_subvolume:
+    name: '/webdav/{{ item }}'
+  loop:
+    - 'data'
+
+- name: Ensure subvolume permissions are correct
+  ansible.builtin.file:
+    path: "/mnt/data1/webdav/{{ item }}"
+    state: directory
+    mode: '0755'
+    owner: 'webdav'
+    group: 'webdav'
+  loop:
+    - 'data'
+
+
+# Set up configuration, backup scripts and systemd service
+- name: Ensure configuration directory is present
+  ansible.builtin.file:
+    path: '/etc/webdav'
+    state: directory
+    mode: '0755'
+
+- name: Ensure config file is present
+  ansible.builtin.template:
+    src: 'config.toml.j2'
+    dest: '/etc/webdav/config.toml'
+    mode: '0644'
+    owner: 'root'
+    group: 'root'
+  notify: 'restart webdav'
+
+- name: Ensure backup scripts are present
+  ansible.builtin.copy:
+    src: "webdav.{{ item }}.backup.sh"
+    dest: "/etc/backups/webdav.{{ item }}.backup.sh"
+    owner: 'root'
+    group: 'root'
+    mode: '0644'
+  loop:
+    - 'data'
+
+- name: Ensure service file is present
+  ansible.builtin.copy:
+    src: 'webdav.service'
+    dest: '/lib/systemd/system/webdav.service'
+    owner: 'root'
+    group: 'root'
+    mode: '0644'
+  register: res
+
+- name: systemd-reload
+  ansible.builtin.systemd_service:
+    daemon_reload: true
+  when: 'res.changed'
+
+- name: Ensure webdav service is enabled
+  ansible.builtin.service:
+    name: 'webdav'
+    enabled: true

roles/webdav/templates/config.toml.j2

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+address = '0.0.0.0'
+port = 8018
+
+# Handled by reverse proxy
+tls = false
+
+prefix = '/'
+debug = false
+noSniff = false
+
+behindProxy = true
+directory = '/mnt/data1/webdav/data'
+
+permissions = 'R'
+rulesBehavior = 'overwrite'
+
+[log]
+format = 'console'
+# Color output isn't useful when ingested via systemd
+colors = false
+outputs = ['stdout']
+
+[cors]
+enabled = false
+
+[[users]]
+username = '{{ webdav_user }}'
+password = '{bcrypt}{{ webdav_password_bcrypt }}'
+permissions = 'CRUD'
+
+# vim: ft=toml