commit 0b7e6a01070af01f552141eeb39ab2b3a22386a2 Author: zorruno <1+zorruno@noreply.home.fox.co.nz> Date: Sat Sep 26 01:40:52 2026 +0000 Initial reusable HA kiosk MQTT controls diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..1a80872 --- /dev/null +++ b/.gitignore @@ -0,0 +1,16 @@ +# Per-device credentials and settings +*.env +config +systemd.env +telemetry.env +secrets.yaml +*.key +*.pem + +# Generated package and Python cache +home-assistant/kiosk-package.yaml +__pycache__/ +*.py[cod] + +# Local backups +*.backup-* diff --git a/CHANGELOG.md b/CHANGELOG.md new file mode 100644 index 0000000..48b4166 --- /dev/null +++ b/CHANGELOG.md @@ -0,0 +1,8 @@ +# Changelog + +## Unreleased + +- Extracted the kiosk browser and MQTT control into configurable Linux/X11 + components. +- Added reusable Home Assistant package rendering, retained-state recovery, + MQTT availability/Last Will, and an optional telemetry publisher. diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..7211da1 --- /dev/null +++ b/README.md @@ -0,0 +1,143 @@ +# HA Kiosk MQTT Control + +Reusable Linux/X11 touchscreen kiosk controls for Home Assistant over MQTT. The +project combines local display and brightness management, a restartable browser, +retained MQTT state and availability, and a Home Assistant package for controls. + +The reference installation is a Dell portrait touchscreen kiosk. Device values +are configurable so the same controls can be deployed to other kiosks. + +## Features + +- Display modes: Screen Lock, Screen Off, Screensaver, and Screen On. +- Touch and optional camera-motion wake, shared presence timer and brightness ramp. +- Current/presence brightness, volume, mute, and physical display state. +- Periodic retained-state publication to recover Home Assistant entities after a + broker retained-store reset. +- MQTT heartbeat watchdog that restarts the screen-control service when its + command subscriber has stopped receiving messages. +- Separate Chrome systemd service with automatic restart. +- Retained availability with Last Will. +- Optional performance telemetry and MQTT Discovery sensors. + +## Requirements + +- Linux desktop session running X11 (the included touch and DPMS controls use X11). +- Google Chrome/Chromium and a kiosk dashboard URL. +- `mosquitto-clients`, `xinput`, `brightnessctl`, `xset`, `xscreensaver`, + `wpctl`, `stdbuf`, `awk`, `grep`, and Bash. +- A Home Assistant MQTT integration and an MQTT broker reachable from the kiosk. +- Optional camera motion service publishing the configured motion state topic. +- Optional telemetry: Python 3 with `psutil` and `paho-mqtt`. + +Wayland support is not currently implemented. + +## Configure a kiosk + +1. Create the per-user directories, then copy the scripts and units into place: + + ```sh + install -d -m 700 ~/.config/ha-kiosk + install -d ~/.local/lib/ha-kiosk-mqtt-control ~/.config/systemd/user + cp runtime/*.sh ~/.local/lib/ha-kiosk-mqtt-control/ + chmod 755 ~/.local/lib/ha-kiosk-mqtt-control/*.sh + cp runtime/*.service ~/.config/systemd/user/ + ``` +2. If no config exists yet, copy `runtime/config.example` to + `~/.config/ha-kiosk/config`; protect it with `chmod 600`. Edit the kiosk + identifier, MQTT roots, dashboard URL, display/touchscreen values, and optional + motion integration. The `KIOSK_ID` topic segment must match the segment used + in the rendered HA package. `KIOSK_ENTITY_PREFIX` must match the package's + `--entity-prefix` (and is used by optional telemetry). Preserve an existing + config when upgrading rather than replacing it with the example. +3. Configure the system Mosquitto clients so `mosquitto_pub` and + `mosquitto_sub` can reach the same broker as Home Assistant. The control and + availability shell scripts currently call those standard clients without + passing authentication flags; use a broker/network policy that allows the + kiosk's client connection, or integrate a credential-safe client wrapper + appropriate to your broker. Do not put passwords in this repository or in + command-line arguments. The optional Python telemetry publisher accepts + broker credentials from its protected systemd environment file. +4. If no systemd environment file exists yet, copy + `runtime/systemd.env.example` to `~/.config/ha-kiosk/systemd.env` and set + `KIOSK_ID` and `STATUS_ROOT` to match `config`. This environment file is used + by systemd for the availability service's orderly-stop publication. +5. Install `ha-kiosk-browser.service`, `ha-kiosk-screen-control.service`, and + `ha-kiosk-availability.service` from `runtime/` into + `~/.config/systemd/user/`. Before enabling the browser unit, disable any + existing desktop/autostart entry that launches the same browser, so there is + only one browser service owner. +6. Run `systemctl --user daemon-reload`, then enable and start + `ha-kiosk-browser.service`, `ha-kiosk-screen-control.service`, and + `ha-kiosk-availability.service`. +7. Enable lingering for the kiosk user if user services must run before login: + `sudo loginctl enable-linger "$USER"`. + +The screen-control script reads `~/.config/ha-kiosk/config`. The browser launcher +reads the same file for `KIOSK_URL`, display and Chrome profile values, and touch +mapping values. Systemd environment files use systemd syntax, not shell sourcing. + +## Home Assistant package + +Render the MQTT entities from the parameterized package template: + +```sh +python3 home-assistant/render-package.py \ + --name "My Kiosk" \ + --entity-prefix my_kiosk \ + --command-root kiosk/commands/my_kiosk \ + --status-root kiosk/status/my_kiosk \ + --manufacturer Generic \ + --model "Linux Touchscreen Kiosk" \ + --output /path/to/homeassistant/packages/my_kiosk.yaml +``` + +The `--command-root` and `--status-root` values are full per-device MQTT topic +roots (including the device segment). They should equal `COMMAND_ROOT/KIOSK_ID` +and `STATUS_ROOT/KIOSK_ID` from the kiosk config. The example uses the neutral +`kiosk/commands` and `kiosk/status` namespaces. The generated package provides the +MQTT controls, availability, and diagnostic entities. Add it to a Home Assistant +package directory and validate the HA configuration before reloading the MQTT +integration or restarting Home Assistant. Existing dashboards and automations may refer to the entity IDs, so +review those references when changing the entity prefix. + +The package expects the kiosk to publish the topics rooted at the supplied +command/status roots. It uses MQTT retained availability and has no secrets. + +## Optional telemetry + +Copy `telemetry/telemetry.env.example` to +`~/.config/ha-kiosk/telemetry.env`, set the broker values, and protect it with +`chmod 600`. Copy `telemetry/kiosk-telemetry.service` into +`~/.config/systemd/user/`, then reload systemd and enable +`kiosk-telemetry.service`. Keep the real environment file out of Git; +`.gitignore` excludes it. Telemetry uses Home Assistant MQTT Discovery. + +## Recovery behavior + +- All control and diagnostic states are republished retained every 30 seconds. +- A non-retained control heartbeat is sent on the same cadence. If the command + subscriber does not return the heartbeat within 90 seconds, systemd restarts + screen control. +- Chrome runs in a separate `Restart=always` service, so restarting screen + control does not take down the browser. +- The availability watcher publishes retained `ON`, while Mosquitto's Last Will + publishes retained `OFF` when the connection is lost. + +## Updating + +Back up the per-device configuration and current scripts, install the new +version, run `bash -n` on shell scripts, reload user systemd, and restart the +services individually. Check `systemctl --user status` and the retained MQTT +state topics after the update. + +## License + +This project is licensed under the GNU General Public License, version 3 or any +later version. See `LICENSE`. + +## Credentials and repository + +Never commit MQTT credentials, SSH private keys, Home Assistant tokens, or a +real per-kiosk config. The Gitea repository is public, so keep secrets and actual +per-kiosk settings out of commits. diff --git a/home-assistant/kiosk-package.yaml.in b/home-assistant/kiosk-package.yaml.in new file mode 100644 index 0000000..4c94722 --- /dev/null +++ b/home-assistant/kiosk-package.yaml.in @@ -0,0 +1,674 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +#:########################################################################################:# +# __KIOSK_NAME__ Package # +#:########################################################################################:# +# +# TITLE: +# __KIOSK_NAME__ +# +# FILE: +# __KIOSK_ENTITY_PREFIX__.yaml +# +# VERSION: +# V3.0 - 2026-09-26 +# +# PURPOSE: +# Provides Home Assistant controls and status entities for the Kiosk portrait +# touchscreen kiosk. +# +# DISPLAY CONTROL MODEL: +# A single MQTT select sets one persistent display mode: +# - Screen Lock +# - Screen Off +# - Screensaver +# - Screen On +# +# The selected display mode is separate from the actual physical screen and +# screensaver states. For example, Screen Off remains selected while a touch +# temporarily wakes the physical display. +# +# MQTT DEVICE: +# Name: __KIOSK_NAME__ +# Identifier: __KIOSK_ENTITY_PREFIX__ +# Manufacturer: Dell +# Model: Portrait Touchscreen Kiosk +# Suggested Area: Lounge +# +# ENTITIES: +# select.__KIOSK_ENTITY_PREFIX___display_mode +# number.__KIOSK_ENTITY_PREFIX___brightness +# number.__KIOSK_ENTITY_PREFIX___presence_brightness +# sensor.__KIOSK_ENTITY_PREFIX___actual_brightness +# number.__KIOSK_ENTITY_PREFIX___presence_timeout +# binary_sensor.__KIOSK_ENTITY_PREFIX___presence_active +# switch.__KIOSK_ENTITY_PREFIX___motion_wake +# number.__KIOSK_ENTITY_PREFIX___volume +# switch.__KIOSK_ENTITY_PREFIX___mute +# binary_sensor.__KIOSK_ENTITY_PREFIX___screen_on +# binary_sensor.__KIOSK_ENTITY_PREFIX___screensaver_active +# binary_sensor.__KIOSK_ENTITY_PREFIX___motion +# +# REPLACED ENTITIES: +# The following writable entities from V1.7 are removed: +# - switch.__KIOSK_ENTITY_PREFIX___screen +# - switch.__KIOSK_ENTITY_PREFIX___screensaver +# +# They are replaced by: +# - select.__KIOSK_ENTITY_PREFIX___display_mode +# - binary_sensor.__KIOSK_ENTITY_PREFIX___screen_on +# - binary_sensor.__KIOSK_ENTITY_PREFIX___screensaver_active +# +# MQTT COMMAND TOPICS: +# __COMMAND_TOPIC_ROOT__/display_mode/set +# __COMMAND_TOPIC_ROOT__/brightness/set +# __COMMAND_TOPIC_ROOT__/brightness/presence/set +# __COMMAND_TOPIC_ROOT__/presence/timeout/set +# __COMMAND_TOPIC_ROOT__/motion_wake/set +# __COMMAND_TOPIC_ROOT__/audio/volume/set +# __COMMAND_TOPIC_ROOT__/audio/mute/set +# +# MQTT STATE TOPICS: +# __STATUS_TOPIC_ROOT__/display_mode/state +# __STATUS_TOPIC_ROOT__/screen/state +# __STATUS_TOPIC_ROOT__/screensaver/state +# __STATUS_TOPIC_ROOT__/brightness/state +# __STATUS_TOPIC_ROOT__/brightness/actual/state +# __STATUS_TOPIC_ROOT__/brightness/presence/state +# __STATUS_TOPIC_ROOT__/presence/state +# __STATUS_TOPIC_ROOT__/presence/timeout/state +# __STATUS_TOPIC_ROOT__/motion_wake/state +# __STATUS_TOPIC_ROOT__/audio/volume/state +# __STATUS_TOPIC_ROOT__/audio/mute/state +# __STATUS_TOPIC_ROOT__/motion/state +# +# MQTT AVAILABILITY TOPIC: +# __STATUS_TOPIC_ROOT__/availability +# +# DISPLAY MODES: +# Screen Lock: +# - Stops XScreenSaver. +# - Disables touchscreen input. +# - Keeps the physical panel off. +# - Ignores camera motion even when Motion Wake is enabled. +# - Camera motion detection and reporting continue in the background. +# +# Screen Off: +# - Keeps the physical panel off while activity is inactive. +# - Keeps the touchscreen enabled. +# - Touch always wakes the panel temporarily. +# - Camera motion wakes it when Motion Wake is enabled. +# - Activity applies Presence Brightness. +# - The panel returns to Screen Off after the shared Presence Timeout. +# +# Screensaver: +# - Turns the panel on at Current Brightness. +# - Starts XScreenSaver immediately. +# - Touch stops XScreenSaver and applies Presence Brightness. +# - Camera motion does the same when Motion Wake is enabled. +# - XScreenSaver restarts after the shared Presence Timeout. +# +# Screen On: +# - Keeps the panel on at Current Brightness while activity is inactive. +# - Touch applies Presence Brightness. +# - Camera motion does the same when Motion Wake is enabled. +# - The panel returns to Current Brightness after the Presence Timeout. +# +# PRESENCE AND TOUCH OPERATION: +# - Touch and camera motion use the same Presence Timeout. +# - Touch is active in every mode except Screen Lock. +# - Motion Wake controls camera motion only and does not disable touch wake. +# - Qualifying activity immediately applies Presence Brightness. +# - Camera motion holds presence active until the Motion entity returns to OFF. +# - A touch starts or restarts the ten-step brightness ramp immediately unless +# qualifying camera motion is currently holding presence active. +# - Presence Timeout is the total duration of the ten-step brightness ramp. +# - The final ramp step applies the latest Current Brightness. +# - The selected display mode is then restored automatically. +# +# DIAGNOSTIC STATE MEANING: +# - Screen On reports the real Linux DPMS panel state. +# - Screensaver Active reports whether XScreenSaver is running. +# - Presence Active reports whether temporary activity behaviour is active. +# - Actual Brightness reports the physical backlight percentage. +# +# VERSION HISTORY: +# V2.3 - 2026-08-02 +# - Removed the Home Assistant Display Mode Restoration automation. +# - Prevented startup and availability timing races from republishing an +# incorrect display mode, including unexpected Screen On commands. +# - Display-mode persistence and enforcement remain handled locally by the +# Kiosk screen-control service. +# +# V2.2 - 2026-07-30 +# - Enforce Screen Lock every ten minutes because the kiosk can incorrectly report +# DPMS off after a restart while the physical panel remains dimly visible. +# +# V2.1 - 2026-07-30 +# - Reapply the selected display mode when the kiosk or Home Assistant restarts, +# ensuring its physical panel, touchscreen and screensaver state are restored. +# +# V2.0 - 2026-07-28 +# - Replaced the separate Screen and Screensaver switches with one persistent +# four-option Display Mode select. +# - Added Screen Lock, Screen Off, Screensaver, and Screen On modes. +# - Added shared touchscreen and camera-presence behaviour. +# - Added automatic return to the selected mode after the presence ramp. +# - Replaced writable Screen and Screensaver entities with diagnostics. +# +# V1.7 - 2026-07-27 +# - Re-enabled DPMS after XScreenSaver activation. +# - Corrected Screen state reporting while XScreenSaver was running. +# +# V1.6 - 2026-07-27 +# - Grouped all MQTT entities under one __KIOSK_NAME__ device. +# +# V1.5 - 2026-07-27 +# - Added Motion Wake control. +# +# V1.4 - 2026-07-27 +# - Added the ten-step presence-brightness fade. +# +# V1.3 - 2026-07-27 +# - Added presence brightness, timeout, and diagnostic entities. +# +# V1.2 - 2026-07-27 +# - Added XScreenSaver control. +# +# V1.1 - 2026-07-27 +# - Added MQTT availability monitoring. +# +# V1.0 - 2026-07-26 +# - Initial package. +# +#:########################################################################################:# +# MQTT Entities # +#:########################################################################################:# + +mqtt: + - button: + name: "Kiosk Restart Chrome" + unique_id: __KIOSK_ENTITY_PREFIX___restart_chrome + icon: mdi:google-chrome + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + command_topic: "__COMMAND_TOPIC_ROOT__/chrome/restart" + payload_press: "PRESS" + + #:########################################################################################:# + # __KIOSK_NAME__ Display Mode # + #:########################################################################################:# + # + # Selects the persistent display operating mode. + # + # The selected mode remains unchanged while touch or camera activity temporarily + # changes the real panel or screensaver state. + # + + - select: + name: "Display Mode" + unique_id: __KIOSK_ENTITY_PREFIX___display_mode + default_entity_id: select.__KIOSK_ENTITY_PREFIX___display_mode + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + command_topic: "__COMMAND_TOPIC_ROOT__/display_mode/set" + state_topic: "__STATUS_TOPIC_ROOT__/display_mode/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + options: + - "Screen Lock" + - "Screen Off" + - "Screensaver" + - "Screen On" + + optimistic: false + retain: false + + icon: mdi:monitor-dashboard + + #:########################################################################################:# + # __KIOSK_NAME__ Current Brightness # + #:########################################################################################:# + # + # Stores the normal inactive brightness from 1 to 100 percent. + # + # In Screensaver and Screen On modes it is the normal visible brightness. + # In Screen Off mode it is the final ramp target before the panel powers off. + # In Screen Lock mode it is stored for the next unlocked mode. + # + + - number: + name: "Brightness" + unique_id: __KIOSK_ENTITY_PREFIX___brightness + default_entity_id: number.__KIOSK_ENTITY_PREFIX___brightness + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + command_topic: "__COMMAND_TOPIC_ROOT__/brightness/set" + state_topic: "__STATUS_TOPIC_ROOT__/brightness/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + min: 1 + max: 100 + step: 1 + mode: slider + + unit_of_measurement: "%" + + optimistic: false + retain: false + + icon: mdi:brightness-6 + + #:########################################################################################:# + # __KIOSK_NAME__ Presence Brightness # + #:########################################################################################:# + # + # Sets the temporary brightness used after touch or qualifying camera motion. + # + # Changing it while Presence Active is ON immediately updates the physical + # backlight. + # + + - number: + name: "Presence Brightness" + unique_id: __KIOSK_ENTITY_PREFIX___presence_brightness + default_entity_id: number.__KIOSK_ENTITY_PREFIX___presence_brightness + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + entity_category: config + + command_topic: "__COMMAND_TOPIC_ROOT__/brightness/presence/set" + state_topic: "__STATUS_TOPIC_ROOT__/brightness/presence/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + min: 1 + max: 100 + step: 1 + mode: slider + + unit_of_measurement: "%" + + optimistic: false + retain: false + + icon: mdi:brightness-7 + + #:########################################################################################:# + # __KIOSK_NAME__ Actual Brightness # + #:########################################################################################:# + # + # Reports the physical display backlight percentage. + # + # This may differ from Current Brightness while temporary activity is active or + # while the ten-step brightness ramp is running. + # + + - sensor: + name: "Actual Brightness" + unique_id: __KIOSK_ENTITY_PREFIX___actual_brightness + default_entity_id: sensor.__KIOSK_ENTITY_PREFIX___actual_brightness + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + entity_category: diagnostic + + state_topic: "__STATUS_TOPIC_ROOT__/brightness/actual/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + unit_of_measurement: "%" + state_class: measurement + + icon: mdi:brightness-percent + + #:########################################################################################:# + # __KIOSK_NAME__ Presence Timeout # + #:########################################################################################:# + # + # Sets the shared touch and camera-presence timeout. + # + # The value is the total duration of the ten-step brightness ramp. Home Assistant + # displays whole minutes while MQTT stores and transfers seconds. + # + + - number: + name: "Presence Timeout" + unique_id: __KIOSK_ENTITY_PREFIX___presence_timeout + default_entity_id: number.__KIOSK_ENTITY_PREFIX___presence_timeout + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + entity_category: config + + command_topic: "__COMMAND_TOPIC_ROOT__/presence/timeout/set" + state_topic: "__STATUS_TOPIC_ROOT__/presence/timeout/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + command_template: >- + {{ (value | float(1) * 60) | round(0) | int }} + + value_template: >- + {{ (value | float(60) / 60) | round(0) | int }} + + min: 1 + max: 1440 + step: 1 + mode: box + + unit_of_measurement: "min" + + optimistic: false + retain: false + + icon: mdi:timer-outline + + #:########################################################################################:# + # __KIOSK_NAME__ Presence Active # + #:########################################################################################:# + # + # Reports whether temporary touch or camera-presence behaviour is active. + # + # It remains ON through the brightness ramp and returns to OFF when the selected + # display mode has been restored. + # + + - binary_sensor: + name: "Presence Active" + unique_id: __KIOSK_ENTITY_PREFIX___presence_active + default_entity_id: binary_sensor.__KIOSK_ENTITY_PREFIX___presence_active + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + entity_category: diagnostic + + state_topic: "__STATUS_TOPIC_ROOT__/presence/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + payload_on: "ON" + payload_off: "OFF" + + icon: mdi:account-eye + + #:########################################################################################:# + # __KIOSK_NAME__ Motion Wake # + #:########################################################################################:# + # + # Controls whether camera motion counts as display activity. + # + # Motion Wake does not affect touchscreen activity. Screen Lock ignores camera + # motion regardless of this switch while motion detection continues reporting. + # + + - switch: + name: "Motion Wake" + unique_id: __KIOSK_ENTITY_PREFIX___motion_wake + default_entity_id: switch.__KIOSK_ENTITY_PREFIX___motion_wake + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + entity_category: config + + command_topic: "__COMMAND_TOPIC_ROOT__/motion_wake/set" + state_topic: "__STATUS_TOPIC_ROOT__/motion_wake/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + payload_on: "ON" + payload_off: "OFF" + + optimistic: false + retain: false + + icon: mdi:motion-sensor + + #:########################################################################################:# + # __KIOSK_NAME__ Volume # + #:########################################################################################:# + # + # Controls the active PipeWire audio-sink volume from 0 to 100 percent. + # + + - number: + name: "Volume" + unique_id: __KIOSK_ENTITY_PREFIX___volume + default_entity_id: number.__KIOSK_ENTITY_PREFIX___volume + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + command_topic: "__COMMAND_TOPIC_ROOT__/audio/volume/set" + state_topic: "__STATUS_TOPIC_ROOT__/audio/volume/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + min: 0 + max: 100 + step: 1 + mode: slider + + unit_of_measurement: "%" + + optimistic: false + retain: false + + icon: mdi:volume-high + + #:########################################################################################:# + # __KIOSK_NAME__ Mute # + #:########################################################################################:# + # + # Controls the mute state of the active PipeWire audio sink. + # + + - switch: + name: "Mute" + unique_id: __KIOSK_ENTITY_PREFIX___mute + default_entity_id: switch.__KIOSK_ENTITY_PREFIX___mute + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + command_topic: "__COMMAND_TOPIC_ROOT__/audio/mute/set" + state_topic: "__STATUS_TOPIC_ROOT__/audio/mute/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + payload_on: "ON" + payload_off: "OFF" + + optimistic: false + retain: false + + icon: mdi:volume-mute + + #:########################################################################################:# + # __KIOSK_NAME__ Screen On # + #:########################################################################################:# + # + # Reports the real physical panel state from Linux DPMS. + # + # This can report ON while Display Mode remains Screen Off because touch or + # qualifying camera motion has temporarily woken the panel. + # + + - binary_sensor: + name: "Screen On" + unique_id: __KIOSK_ENTITY_PREFIX___screen_on + default_entity_id: binary_sensor.__KIOSK_ENTITY_PREFIX___screen_on + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + entity_category: diagnostic + + state_topic: "__STATUS_TOPIC_ROOT__/screen/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + payload_on: "ON" + payload_off: "OFF" + + device_class: power + icon: mdi:monitor + + #:########################################################################################:# + # __KIOSK_NAME__ Screensaver Active # + #:########################################################################################:# + # + # Reports whether XScreenSaver is currently running. + # + # In Screensaver mode it normally reports ON, but temporarily reports OFF while + # touch or qualifying camera motion displays the Home Assistant kiosk. + # + + - binary_sensor: + name: "Screensaver Active" + unique_id: __KIOSK_ENTITY_PREFIX___screensaver_active + default_entity_id: binary_sensor.__KIOSK_ENTITY_PREFIX___screensaver_active + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + entity_category: diagnostic + + state_topic: "__STATUS_TOPIC_ROOT__/screensaver/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + payload_on: "ON" + payload_off: "OFF" + + icon: mdi:monitor-shimmer + + #:########################################################################################:# + # __KIOSK_NAME__ Motion # + #:########################################################################################:# + # + # Reports raw movement detected by the local Motion camera service. + # + # Motion continues reporting in Screen Lock and while Motion Wake is OFF. It only + # affects display activity when Motion Wake is ON and Display Mode is not + # Screen Lock. + # + + - binary_sensor: + name: "Motion" + unique_id: __KIOSK_ENTITY_PREFIX___motion + default_entity_id: binary_sensor.__KIOSK_ENTITY_PREFIX___motion + + device: + identifiers: + - __KIOSK_ENTITY_PREFIX__ + name: "__KIOSK_NAME__" + manufacturer: "Dell" + model: "Portrait Touchscreen Kiosk" + suggested_area: "Lounge" + + state_topic: "__STATUS_TOPIC_ROOT__/motion/state" + + availability_topic: "__STATUS_TOPIC_ROOT__/availability" + payload_available: "ON" + payload_not_available: "OFF" + + payload_on: "ON" + payload_off: "OFF" + + device_class: motion diff --git a/home-assistant/render-package.py b/home-assistant/render-package.py new file mode 100644 index 0000000..3bca184 --- /dev/null +++ b/home-assistant/render-package.py @@ -0,0 +1,49 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-3.0-or-later +"""Render the MQTT kiosk Home Assistant package from its parameterized template.""" +import argparse +import json +import re +from pathlib import Path + +parser = argparse.ArgumentParser() +parser.add_argument("--name", required=True) +parser.add_argument("--entity-prefix", required=True, help="HA device/entity slug, e.g. lounge_kiosk") +parser.add_argument("--command-root", required=True, help="MQTT command topic root, e.g. kiosk/commands/lounge") +parser.add_argument("--status-root", required=True, help="MQTT status topic root, e.g. kiosk/status/lounge") +parser.add_argument("--manufacturer", default="Generic") +parser.add_argument("--model", default="Linux Touchscreen Kiosk") +parser.add_argument("--area", default="") +parser.add_argument("--output", required=True, type=Path) +args = parser.parse_args() + +if not re.fullmatch(r"[a-z][a-z0-9_]*", args.entity_prefix): + parser.error("--entity-prefix must contain lowercase letters, digits, and underscores") +topic_pattern = r"[A-Za-z0-9_.-]+(?:/[A-Za-z0-9_.-]+)*" +if not re.fullmatch(topic_pattern, args.command_root): + parser.error("--command-root must be a non-empty MQTT topic path without wildcards") +if not re.fullmatch(topic_pattern, args.status_root): + parser.error("--status-root must be a non-empty MQTT topic path without wildcards") + +text = Path(__file__).with_name("kiosk-package.yaml.in").read_text() +quoted_values = { + "__KIOSK_NAME__": args.name, + "__MANUFACTURER__": args.manufacturer, + "__MODEL__": args.model, + "__AREA__": args.area, +} +for marker, value in quoted_values.items(): + text = text.replace(f'"{marker}"', json.dumps(value, ensure_ascii=False)) + text = text.replace(marker, value) +for marker, value in { + "__KIOSK_ENTITY_PREFIX__": args.entity_prefix, + "__COMMAND_TOPIC_ROOT__": args.command_root, + "__STATUS_TOPIC_ROOT__": args.status_root, +}.items(): + text = text.replace(marker, value) +if re.search(r"__[A-Z_]+__", text): + raise SystemExit("Unresolved template marker remains") +if not args.area: + text = text.replace(' suggested_area: ""\n', "") +args.output.parent.mkdir(parents=True, exist_ok=True) +args.output.write_text(text) diff --git a/runtime/availability-watch.sh b/runtime/availability-watch.sh new file mode 100755 index 0000000..63dbea7 --- /dev/null +++ b/runtime/availability-watch.sh @@ -0,0 +1,43 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-3.0-or-later + +set -u + +KIOSK_CONFIG_FILE="${KIOSK_CONFIG_FILE:-$HOME/.config/ha-kiosk/config}" +if [[ -r "$KIOSK_CONFIG_FILE" ]]; then + # shellcheck source=/dev/null + source "$KIOSK_CONFIG_FILE" +fi +: "${KIOSK_ID:=kiosk}" +: "${COMMAND_ROOT:=kiosk/commands}" +: "${STATUS_ROOT:=kiosk/status}" +AVAILABILITY_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/availability" +PING_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/availability/ping" +PUBLISH_INTERVAL_SECONDS="${AVAILABILITY_INTERVAL_SECONDS:-30}" + +publish_available() { + /usr/bin/mosquitto_pub -r -t "$AVAILABILITY_TOPIC" -m "ON" +} + +# Keep the MQTT connection that owns the Last Will open in the background. +/usr/bin/mosquitto_sub \ + -t "$PING_TOPIC" \ + --will-topic "$AVAILABILITY_TOPIC" \ + --will-payload "OFF" \ + --will-retain & +subscriber_pid=$! + +cleanup() { + kill "$subscriber_pid" 2>/dev/null || true + wait "$subscriber_pid" 2>/dev/null || true +} +trap cleanup EXIT INT TERM + +# Reassert retained availability after Mosquitto reconnects internally. The +# Last Will has already published OFF when a broker connection was lost. +while kill -0 "$subscriber_pid" 2>/dev/null; do + publish_available || true + sleep "$PUBLISH_INTERVAL_SECONDS" +done + +wait "$subscriber_pid" diff --git a/runtime/config.example b/runtime/config.example new file mode 100644 index 0000000..b049ed3 --- /dev/null +++ b/runtime/config.example @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +# Per-kiosk settings. Copy to ~/.config/ha-kiosk/config. +# This file is sourced by Bash; quote values containing spaces. +KIOSK_ID=my_kiosk +KIOSK_ENTITY_PREFIX=my_kiosk +KIOSK_NAME="My Kiosk" +KIOSK_MANUFACTURER=Generic +KIOSK_MODEL="Linux Touchscreen Kiosk" +KIOSK_AREA="" +COMMAND_ROOT=kiosk/commands +STATUS_ROOT=kiosk/status +KIOSK_URL="http://homeassistant.local:8123/" +KIOSK_DISPLAY=:0 +KIOSK_XAUTHORITY="$HOME/.Xauthority" +CHROME_BIN=/usr/bin/google-chrome-stable +CHROME_USER_DATA_DIR="$HOME/.config/ha-kiosk/chrome-profile" +TOUCH_DEVICE_NAME="Touchscreen Device Name" +TOUCH_DISPLAY_OUTPUT=eDP-1 +SCREEN_LOCK_BRIGHTNESS=0 +BROWSER_SERVICE=ha-kiosk-browser.service +MOTION_SERVICE=my_kiosk-motion.service +MOTION_EVENT_SCRIPT="$HOME/my_kiosk-motion-event.sh" +MQTT_REPUBLISH_INTERVAL_SECONDS=30 +MQTT_HEARTBEAT_TIMEOUT_SECONDS=90 +AVAILABILITY_INTERVAL_SECONDS=30 diff --git a/runtime/ha-kiosk-availability.service b/runtime/ha-kiosk-availability.service new file mode 100644 index 0000000..7a1b2f9 --- /dev/null +++ b/runtime/ha-kiosk-availability.service @@ -0,0 +1,17 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +[Unit] +Description=Home Assistant Kiosk MQTT availability +After=network-online.target +Wants=network-online.target +StartLimitIntervalSec=0 + +[Service] +Type=simple +EnvironmentFile=%h/.config/ha-kiosk/systemd.env +ExecStart=%h/.local/lib/ha-kiosk-mqtt-control/availability-watch.sh +ExecStopPost=/usr/bin/mosquitto_pub -r -t ${STATUS_ROOT}/${KIOSK_ID}/availability -m OFF +Restart=always +RestartSec=10 + +[Install] +WantedBy=default.target diff --git a/runtime/ha-kiosk-browser.service b/runtime/ha-kiosk-browser.service new file mode 100644 index 0000000..2e36daf --- /dev/null +++ b/runtime/ha-kiosk-browser.service @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +[Unit] +Description=Home Assistant touchscreen kiosk browser +After=graphical-session.target network-online.target +Wants=network-online.target + +[Service] +Type=simple +EnvironmentFile=-%h/.config/ha-kiosk/systemd.env +ExecStart=%h/.local/lib/ha-kiosk-mqtt-control/ha-kiosk-launcher.sh +Restart=always +RestartSec=5 + +[Install] +WantedBy=default.target diff --git a/runtime/ha-kiosk-launcher.sh b/runtime/ha-kiosk-launcher.sh new file mode 100755 index 0000000..131491c --- /dev/null +++ b/runtime/ha-kiosk-launcher.sh @@ -0,0 +1,36 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-3.0-or-later +set -euo pipefail + +KIOSK_CONFIG_FILE="${KIOSK_CONFIG_FILE:-$HOME/.config/ha-kiosk/config}" +if [[ -r "$KIOSK_CONFIG_FILE" ]]; then + # shellcheck source=/dev/null + source "$KIOSK_CONFIG_FILE" +fi + +: "${KIOSK_URL:?Set KIOSK_URL in ~/.config/ha-kiosk/config}" +: "${TOUCH_DEVICE_NAME:=Touchscreen Device Name}" +: "${TOUCH_DISPLAY_OUTPUT:=eDP-1}" +: "${KIOSK_DISPLAY:=:0}" +: "${KIOSK_XAUTHORITY:=$HOME/.Xauthority}" +: "${CHROME_BIN:=/usr/bin/google-chrome-stable}" +: "${CHROME_USER_DATA_DIR:=$HOME/.config/ha-kiosk/chrome-profile}" +export DISPLAY="$KIOSK_DISPLAY" +export XAUTHORITY="$KIOSK_XAUTHORITY" + +# Allow the desktop and touchscreen to initialise. +sleep 2 + +# Map the touchscreen to the rotated built-in display. +xinput map-to-output \ + "$TOUCH_DEVICE_NAME" \ + "$TOUCH_DISPLAY_OUTPUT" + +# Start Home Assistant in Chrome kiosk mode. +"$CHROME_BIN" \ + --user-data-dir="$CHROME_USER_DATA_DIR" \ + --kiosk \ + --noerrdialogs \ + --disable-session-crashed-bubble \ + --no-first-run \ + "$KIOSK_URL" diff --git a/runtime/ha-kiosk-screen-control.service b/runtime/ha-kiosk-screen-control.service new file mode 100644 index 0000000..8241933 --- /dev/null +++ b/runtime/ha-kiosk-screen-control.service @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +[Unit] +Description=Home Assistant Kiosk MQTT Screen Control +After=network-online.target graphical-session.target +Wants=network-online.target + +[Service] +Type=simple +EnvironmentFile=-%h/.config/ha-kiosk/systemd.env +ExecStart=%h/.local/lib/ha-kiosk-mqtt-control/screen-control.sh +Restart=always +RestartSec=5 + +[Install] +WantedBy=default.target diff --git a/runtime/screen-control.sh b/runtime/screen-control.sh new file mode 100755 index 0000000..4474ef9 --- /dev/null +++ b/runtime/screen-control.sh @@ -0,0 +1,1256 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-3.0-or-later + +#:########################################################################################:# +# HA Kiosk MQTT Control Script # +#:########################################################################################:# +# +# TITLE: +# HA Kiosk MQTT Control +# +# VERSION: +# V3.0 - 2026-09-26 +# +# PURPOSE: +# Provides local MQTT control and state reporting for a Linux touchscreen kiosk. +# +# CONTROLS: +# - Four persistent display modes using one MQTT select. +# - Saved current brightness and physical backlight brightness. +# - Temporary presence brightness from touch or camera motion. +# - Shared touch and presence timeout using a ten-step brightness ramp. +# - Speaker volume and mute using PipeWire wpctl. +# - Actual screen, screensaver, brightness, and presence state reporting. +# +# DISPLAY MODES: +# Screen Lock: +# - Disables touchscreen input. +# - Stops XScreenSaver. +# - Keeps the physical display off. +# - Ignores touch and camera-presence activity. +# +# Screen Off: +# - Keeps the touchscreen enabled. +# - Keeps the physical display off while presence is inactive. +# - Touch always wakes the display. +# - Camera motion wakes the display when Motion Wake is enabled. +# - Returns to Screen Off after the presence ramp reaches Current Brightness. +# +# Screensaver: +# - Starts XScreenSaver immediately at Current Brightness. +# - Touch stops the screensaver and activates Presence Brightness. +# - Camera motion does the same when Motion Wake is enabled. +# - Returns to XScreenSaver at Current Brightness after the presence ramp. +# +# Screen On: +# - Keeps the display on at Current Brightness while presence is inactive. +# - Touch activates Presence Brightness. +# - Camera motion does the same when Motion Wake is enabled. +# - Returns to Current Brightness after the presence ramp. +# +# PRESENCE OPERATION: +# - Touch and camera motion share the same Presence Timeout. +# - Touch always counts as activity except in Screen Lock mode. +# - Camera motion counts as activity only when Motion Wake is enabled. +# - Activity turns the display on and applies Presence Brightness immediately. +# - A touch starts or restarts the ten-step brightness ramp immediately unless +# qualifying camera motion is currently holding presence active. +# - Qualifying camera motion holds presence active until motion ends. +# - The latest saved Current Brightness is used as the ramp target. +# - The selected display mode determines what happens after the final ramp step. +# - A Presence End MQTT command can run a one-off ramp without changing the +# saved Presence Timeout. +# +# MQTT AUTHENTICATION: +# Configure Mosquitto client defaults securely on this host. This script uses +# the installed mosquitto_pub and mosquitto_sub client configuration. +# +# VERSION HISTORY: +# V3.0 - 2026-09-26 +# - Parameterized kiosk identity, MQTT roots, display settings and service names. +# - Added periodic retained-state refresh and an MQTT subscriber heartbeat watchdog. +# - Kept the browser in an independent restartable systemd service. +# - Added a Presence End MQTT command for one-off presence ramps. +# +# V2.0 - 2026-07-28 +# - Replaced separate Screen and Screensaver command switches with one +# persistent four-option Display Mode control. +# - Added Screen Lock, Screen Off, Screensaver, and Screen On modes. +# - Added direct touchscreen activity detection using XInput RawTouchBegin. +# - Made touch and camera presence use the same Presence Timeout and ramp. +# - Added automatic return to each selected mode after presence finishes. +# - Added touchscreen disable and display enforcement for Screen Lock. +# - Retained actual Screen and Screensaver state topics as diagnostics. +# +# V1.7 - 2026-07-27 +# - Re-enabled DPMS after XScreenSaver activation. +# - Corrected Screen state reporting while the screensaver is running. +# +# V1.6 - 2026-07-27 +# - Changed Screensaver ON to explicitly turn the display on through DPMS. +# - Ensured the Screen state reports ON whenever the screensaver is enabled. +# +# V1.5 - 2026-07-27 +# - Changed Motion Wake ON to immediately wake the display when motion is +# currently detected or presence behaviour is already active. +# - Removed the requirement to wait for a new motion event after enabling +# Motion Wake. +# +# V1.4 - 2026-07-27 +# - Added persistent MQTT control for motion-triggered display wake-up. +# - Kept camera motion detection active while Motion Wake is disabled. +# - Added retained Motion Wake state reporting. +# +# V1.3 - 2026-07-27 +# - Replaced the fixed presence-timeout delay with a ten-step brightness ramp. +# - Spread the ten ramp steps evenly across the configured timeout. +# - Made the ramp follow the latest saved Current Brightness value. +# - Added immediate ramp cancellation when new movement is detected. +# +# V1.2 - 2026-07-27 +# - Added persistent Current Brightness and Presence Brightness values. +# - Added local presence handling from the retained Motion MQTT state. +# - Added a configurable local presence timeout. +# - Added reporting of the actual physical backlight level. +# +# V1.1 - 2026-07-27 +# - Added MQTT control and reporting for XScreenSaver. +# - Forced XScreenSaver OFF whenever the control service starts. +# - Changed Mosquitto commands to use protected client configuration files. +# +# V1.0 - 2026-07-26 +# - Initial screen, brightness, volume, and mute controls. +# + +set -u + +# Optional per-device shell configuration (never commit the real file). +KIOSK_CONFIG_FILE="${KIOSK_CONFIG_FILE:-$HOME/.config/ha-kiosk/config}" +if [[ -r "$KIOSK_CONFIG_FILE" ]]; then + # shellcheck source=/dev/null + source "$KIOSK_CONFIG_FILE" +fi + +: "${KIOSK_ID:=kiosk}" +: "${COMMAND_ROOT:=kiosk/commands}" +: "${STATUS_ROOT:=kiosk/status}" +: "${BROWSER_SERVICE:=ha-kiosk-browser.service}" +: "${MQTT_REPUBLISH_INTERVAL_SECONDS:=30}" +: "${MQTT_HEARTBEAT_TIMEOUT_SECONDS:=90}" +: "${MOTION_SERVICE:=${KIOSK_ID}-motion.service}" +: "${MOTION_EVENT_SCRIPT:=$HOME/${KIOSK_ID}-motion-event.sh}" +: "${STATE_DIR:=${XDG_STATE_HOME:-$HOME/.local/state}/ha-kiosk-${KIOSK_ID}}" +export DISPLAY="${KIOSK_DISPLAY:-:0}" +export XAUTHORITY="${KIOSK_XAUTHORITY:-$HOME/.Xauthority}" + +#:########################################################################################:# +# Device Settings # +#:########################################################################################:# + +TOUCH_DEVICE_NAME="${TOUCH_DEVICE_NAME:-Touchscreen Device Name}" +TOUCH_DISPLAY_OUTPUT="${TOUCH_DISPLAY_OUTPUT:-eDP-1}" +SCREEN_LOCK_BRIGHTNESS="${SCREEN_LOCK_BRIGHTNESS:-0}" + +#:########################################################################################:# +# MQTT Topics # +#:########################################################################################:# + +DISPLAY_MODE_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/display_mode/set" +DISPLAY_MODE_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/display_mode/state" + +# These state topics now report actual physical conditions only. +SCREEN_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/screen/state" +SCREENSAVER_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/screensaver/state" + +CURRENT_BRIGHTNESS_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/brightness/set" +CURRENT_BRIGHTNESS_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/brightness/state" +ACTUAL_BRIGHTNESS_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/brightness/actual/state" + +PRESENCE_BRIGHTNESS_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/brightness/presence/set" +PRESENCE_BRIGHTNESS_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/brightness/presence/state" +PRESENCE_ACTIVE_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/presence/state" + +PRESENCE_TIMEOUT_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/presence/timeout/set" +PRESENCE_TIMEOUT_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/presence/timeout/state" +PRESENCE_END_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/presence/end" + +MOTION_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/motion/state" + +MOTION_WAKE_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/motion_wake/set" +MOTION_WAKE_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/motion_wake/state" + +MOTION_SERVICE="${MOTION_SERVICE}" +MOTION_EVENT_SCRIPT="${MOTION_EVENT_SCRIPT}" + +VOLUME_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/audio/volume/set" +VOLUME_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/audio/volume/state" + +MUTE_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/audio/mute/set" +MUTE_STATE_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/audio/mute/state" + +CHROME_RESTART_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/chrome/restart" +MQTT_HEARTBEAT_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/control/heartbeat" +MQTT_REPUBLISH_INTERVAL_SECONDS="${MQTT_REPUBLISH_INTERVAL_SECONDS:-30}" +MQTT_HEARTBEAT_TIMEOUT_SECONDS="${MQTT_HEARTBEAT_TIMEOUT_SECONDS:-90}" + +# Previous command topics are cleared during initialisation and are no longer +# subscribed to by this script. +LEGACY_SCREEN_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/screen/set" +LEGACY_SCREENSAVER_COMMAND_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/screensaver/set" + +#:########################################################################################:# +# Local State # +#:########################################################################################:# + +STATE_DIR="${STATE_DIR}" +DISPLAY_MODE_FILE="$STATE_DIR/display_mode" +CURRENT_BRIGHTNESS_FILE="$STATE_DIR/current_brightness" +PRESENCE_BRIGHTNESS_FILE="$STATE_DIR/presence_brightness" +PRESENCE_ACTIVE_FILE="$STATE_DIR/presence_active" +PRESENCE_TIMEOUT_FILE="$STATE_DIR/presence_timeout_seconds" +MOTION_WAKE_FILE="$STATE_DIR/motion_wake" +MQTT_EVENT_FIFO="$STATE_DIR/mqtt-events.fifo" +TOUCH_EVENT_FIFO="$STATE_DIR/touch-events.fifo" + +mkdir -p "$STATE_DIR" +chmod 700 "$STATE_DIR" + +#:########################################################################################:# +# MQTT Publishing # +#:########################################################################################:# + +mqtt_publish() { + /usr/bin/mosquitto_pub "$@" +} + +publish_retained() { + local topic="$1" + local payload="$2" + + mqtt_publish \ + -r \ + -t "$topic" \ + -m "$payload" +} + +#:########################################################################################:# +# Value Helpers # +#:########################################################################################:# + +clamp_integer() { + local value="$1" + local minimum="$2" + local maximum="$3" + + if (( value < minimum )); then + value="$minimum" + elif (( value > maximum )); then + value="$maximum" + fi + + printf '%s\n' "$value" +} + +read_integer_file() { + local file="$1" + local fallback="$2" + local minimum="$3" + local maximum="$4" + local value="" + + if [[ -r "$file" ]]; then + read -r value < "$file" || true + fi + + if [[ ! "$value" =~ ^[0-9]+$ ]]; then + value="$fallback" + fi + + clamp_integer "$value" "$minimum" "$maximum" +} + +write_state_file() { + local file="$1" + local value="$2" + local temporary_file="${file}.tmp" + + printf '%s\n' "$value" > "$temporary_file" + chmod 600 "$temporary_file" + mv -f "$temporary_file" "$file" +} + +get_current_brightness() { + read_integer_file "$CURRENT_BRIGHTNESS_FILE" 100 1 100 +} + +get_presence_brightness() { + read_integer_file "$PRESENCE_BRIGHTNESS_FILE" 80 1 100 +} + +get_presence_timeout() { + read_integer_file "$PRESENCE_TIMEOUT_FILE" 300 5 86400 +} + +get_motion_wake() { + local value="ON" + + if [[ -r "$MOTION_WAKE_FILE" ]]; then + read -r value < "$MOTION_WAKE_FILE" || true + fi + + case "${value^^}" in + OFF) + printf 'OFF\n' + ;; + + *) + printf 'ON\n' + ;; + esac +} + +get_presence_active() { + local value="OFF" + + if [[ -r "$PRESENCE_ACTIVE_FILE" ]]; then + read -r value < "$PRESENCE_ACTIVE_FILE" || true + fi + + case "${value^^}" in + ON) + printf 'ON\n' + ;; + + *) + printf 'OFF\n' + ;; + esac +} + +get_display_mode() { + local value="Screen On" + + if [[ -r "$DISPLAY_MODE_FILE" ]]; then + read -r value < "$DISPLAY_MODE_FILE" || true + fi + + case "${value^^}" in + "SCREEN LOCK") + printf 'Screen Lock\n' + ;; + + "SCREEN OFF") + printf 'Screen Off\n' + ;; + + "SCREENSAVER") + printf 'Screensaver\n' + ;; + + *) + printf 'Screen On\n' + ;; + esac +} + + +#:########################################################################################:# +# Camera Service Functions # +#:########################################################################################:# + +camera_should_run() { + if [[ "$(get_motion_wake)" == "ON" ]] && + [[ "$(get_display_mode)" != "Screen Lock" ]]; then + return 0 + fi + + return 1 +} + +sync_camera_service() { + if camera_should_run; then + if ! /usr/bin/systemctl --user \ + is-active --quiet "$MOTION_SERVICE"; then + + /usr/bin/systemctl --user \ + start "$MOTION_SERVICE" \ + >/dev/null 2>&1 || true + fi + + else + if /usr/bin/systemctl --user \ + is-active --quiet "$MOTION_SERVICE"; then + + /usr/bin/systemctl --user \ + stop "$MOTION_SERVICE" \ + >/dev/null 2>&1 || true + fi + + # Ensure the retained Motion state returns to OFF even when Motion is + # deliberately stopped before it publishes an event-end message. + if [[ -x "$MOTION_EVENT_SCRIPT" ]]; then + "$MOTION_EVENT_SCRIPT" end >/dev/null 2>&1 || true + fi + fi +} + +set_presence_active() { + local value="${1^^}" + + case "$value" in + ON|OFF) + write_state_file "$PRESENCE_ACTIVE_FILE" "$value" + publish_retained "$PRESENCE_ACTIVE_STATE_TOPIC" "$value" + ;; + esac +} + +set_display_mode_state() { + local mode="$1" + + write_state_file "$DISPLAY_MODE_FILE" "$mode" + publish_retained "$DISPLAY_MODE_STATE_TOPIC" "$mode" +} + +#:########################################################################################:# +# Display and Audio Helpers # +#:########################################################################################:# + +set_physical_brightness() { + local brightness="$1" + + /usr/bin/brightnessctl \ + --device=intel_backlight \ + set "${brightness}%" \ + >/dev/null +} + +get_physical_brightness() { + /usr/bin/brightnessctl \ + --device=intel_backlight \ + --machine-readable | + /usr/bin/cut -d',' -f4 | + /usr/bin/tr -d '%' +} + +get_screen_state() { + /usr/bin/xset q | + /usr/bin/awk '/Monitor is/ { print toupper($3) }' +} + +touchscreen_is_enabled() { + /usr/bin/xinput \ + list-props "$TOUCH_DEVICE_NAME" | + /usr/bin/awk '/Device Enabled/ { print $NF; exit }' +} + +touchscreen_enable() { + /usr/bin/xinput \ + enable "$TOUCH_DEVICE_NAME" \ + >/dev/null 2>&1 || true + + /usr/bin/xinput \ + map-to-output "$TOUCH_DEVICE_NAME" "$TOUCH_DISPLAY_OUTPUT" \ + >/dev/null 2>&1 || true +} + +touchscreen_disable() { + /usr/bin/xinput \ + disable "$TOUCH_DEVICE_NAME" \ + >/dev/null 2>&1 || true +} + +#:########################################################################################:# +# Chrome Kiosk Functions # +#:########################################################################################:# + +restart_chrome_kiosk() { + /usr/bin/systemctl --user restart "$BROWSER_SERVICE" +} + +#:########################################################################################:# +# Screensaver Functions # +#:########################################################################################:# + +screensaver_is_running() { + /usr/bin/pgrep -x xscreensaver >/dev/null 2>&1 +} + +screensaver_start() { + # The screensaver requires the physical display to be on. + /usr/bin/xset +dpms + /usr/bin/xset dpms force on + + if ! screensaver_is_running; then + /usr/bin/xscreensaver \ + -no-splash \ + >/dev/null 2>&1 & + + for _ in {1..20}; do + if screensaver_is_running; then + break + fi + + /usr/bin/sleep 0.1 + done + fi + + /usr/bin/xscreensaver-command \ + -activate \ + >/dev/null 2>&1 || true + + # XScreenSaver disables DPMS while activating. Re-enable it afterwards so + # physical screen state reporting and manual DPMS control continue to work. + /usr/bin/xset +dpms + /usr/bin/xset dpms force on +} + +screensaver_stop() { + /usr/bin/xscreensaver-command \ + -exit \ + >/dev/null 2>&1 || true + + /usr/bin/pkill \ + -x glmatrix \ + >/dev/null 2>&1 || true +} + +#:########################################################################################:# +# Display Mode Functions # +#:########################################################################################:# + +apply_display_mode_base_state() { + local mode="" + local current_brightness="" + + mode="$(get_display_mode)" + current_brightness="$(get_current_brightness)" + + case "$mode" in + "Screen Lock") + touchscreen_disable + screensaver_stop + /usr/bin/xset +dpms + /usr/bin/xset dpms force off + set_physical_brightness "$SCREEN_LOCK_BRIGHTNESS" + ;; + + "Screen Off") + touchscreen_enable + screensaver_stop + set_physical_brightness "$SCREEN_LOCK_BRIGHTNESS" + /usr/bin/xset +dpms + /usr/bin/xset dpms force off + ;; + + "Screensaver") + touchscreen_enable + set_physical_brightness "$current_brightness" + screensaver_start + ;; + + "Screen On") + touchscreen_enable + screensaver_stop + set_physical_brightness "$current_brightness" + /usr/bin/xset +dpms + /usr/bin/xset dpms force on + ;; + esac +} + +enforce_display_mode() { + local mode="" + local screen_state="" + local touch_enabled="" + + mode="$(get_display_mode)" + screen_state="$(get_screen_state)" + touch_enabled="$(touchscreen_is_enabled)" + + case "$mode" in + "Screen Lock") + if [[ "$touch_enabled" != "0" ]]; then + touchscreen_disable + fi + + if screensaver_is_running; then + screensaver_stop + fi + + if [[ "$screen_state" != "OFF" ]] || + [[ "$(get_physical_brightness)" -gt "$SCREEN_LOCK_BRIGHTNESS" ]]; then + printf '%s Screen Lock corrected unexpected DPMS state: %s\n' \ + "$(/usr/bin/date --iso-8601=seconds)" \ + "${screen_state:-UNKNOWN}" \ + >&2 + + /usr/bin/xset +dpms + /usr/bin/xset dpms force off + set_physical_brightness "$SCREEN_LOCK_BRIGHTNESS" + fi + ;; + + "Screen Off") + if [[ "$touch_enabled" != "1" ]]; then + touchscreen_enable + fi + + if [[ "$(get_presence_active)" != "ON" ]]; then + if screensaver_is_running; then + screensaver_stop + fi + + #if [[ "$screen_state" != "OFF" ]]; then + /usr/bin/xset +dpms + /usr/bin/xset dpms force off + #fi + fi + ;; + + "Screensaver") + if [[ "$touch_enabled" != "1" ]]; then + touchscreen_enable + fi + + if [[ "$(get_presence_active)" != "ON" ]]; then + if [[ "$screen_state" != "ON" ]] || + ! screensaver_is_running; then + screensaver_start + fi + fi + ;; + + "Screen On") + if [[ "$touch_enabled" != "1" ]]; then + touchscreen_enable + fi + + if [[ "$(get_presence_active)" != "ON" ]]; then + if screensaver_is_running; then + screensaver_stop + fi + + if [[ "$screen_state" != "ON" ]]; then + /usr/bin/xset +dpms + /usr/bin/xset dpms force on + fi + fi + ;; + esac +} + +set_display_mode() { + local mode="$1" + + cancel_presence_ramp + set_presence_active "OFF" + set_display_mode_state "$mode" + apply_display_mode_base_state + sync_camera_service +} + +#:########################################################################################:# +# Presence Functions # +#:########################################################################################:# + +presence_ramp_pid="" + +cancel_presence_ramp() { + if [[ -n "$presence_ramp_pid" ]] && + /usr/bin/kill -0 "$presence_ramp_pid" >/dev/null 2>&1; then + /usr/bin/kill "$presence_ramp_pid" >/dev/null 2>&1 || true + wait "$presence_ramp_pid" 2>/dev/null || true + fi + + presence_ramp_pid="" +} + +activate_presence() { + local mode="" + local presence_brightness="" + + mode="$(get_display_mode)" + + if [[ "$mode" == "Screen Lock" ]]; then + return + fi + + cancel_presence_ramp + + presence_brightness="$(get_presence_brightness)" + + touchscreen_enable + screensaver_stop + /usr/bin/xset +dpms + /usr/bin/xset dpms force on + set_physical_brightness "$presence_brightness" + set_presence_active "ON" +} + +run_presence_ramp() { + local timeout_seconds="${1:-}" + local interval_seconds="" + local remaining_steps="" + local actual_brightness="" + local target_brightness="" + local brightness_difference="" + local brightness_change="" + local next_brightness="" + + if [[ -z "$timeout_seconds" ]]; then + timeout_seconds="$(get_presence_timeout)" + fi + + interval_seconds="$( + /usr/bin/awk \ + -v timeout="$timeout_seconds" \ + 'BEGIN { printf "%.3f\n", timeout / 10 }' + )" + + for ((remaining_steps = 10; remaining_steps >= 1; remaining_steps--)); do + /usr/bin/sleep "$interval_seconds" + + # Stop without changing the selected display mode when cancelled. + if [[ "$(get_presence_active)" != "ON" ]]; then + return + fi + + actual_brightness="$(get_physical_brightness)" + target_brightness="$(get_current_brightness)" + + if [[ ! "$actual_brightness" =~ ^[0-9]+$ ]] || + [[ ! "$target_brightness" =~ ^[0-9]+$ ]]; then + continue + fi + + brightness_difference=$((target_brightness - actual_brightness)) + + # The final step always applies the exact latest Current Brightness. + if (( remaining_steps == 1 )); then + next_brightness="$target_brightness" + + elif (( brightness_difference >= 0 )); then + brightness_change=$(( + (brightness_difference + remaining_steps / 2) / + remaining_steps + )) + + next_brightness=$((actual_brightness + brightness_change)) + + else + brightness_change=$(( + ((-brightness_difference) + remaining_steps / 2) / + remaining_steps + )) + + next_brightness=$((actual_brightness - brightness_change)) + fi + + next_brightness="$( + clamp_integer "$next_brightness" 1 100 + )" + + set_physical_brightness "$next_brightness" + done + + # Re-read the target so the final level includes any Current Brightness + # changes received while the ramp was running. + target_brightness="$(get_current_brightness)" + set_physical_brightness "$target_brightness" + set_presence_active "OFF" + apply_display_mode_base_state +} + +schedule_presence_ramp() { + local timeout_seconds="${1:-}" + + cancel_presence_ramp + + if [[ "$(get_presence_active)" != "ON" ]]; then + return + fi + + run_presence_ramp "$timeout_seconds" & + presence_ramp_pid="$!" +} + +handle_touch_activity() { + if [[ "$(get_display_mode)" == "Screen Lock" ]]; then + return + fi + + activate_presence + + # Qualifying camera motion holds presence active. Otherwise, a touch starts + # or restarts the shared Presence Timeout immediately. + if [[ "$current_motion_state" == "ON" ]] && + [[ "$(get_motion_wake)" == "ON" ]]; then + return + fi + + schedule_presence_ramp +} + +#:########################################################################################:# +# Initialisation # +#:########################################################################################:# + +current_display_mode="$(get_display_mode)" +current_brightness="$(get_current_brightness)" +presence_brightness="$(get_presence_brightness)" +presence_timeout="$(get_presence_timeout)" +motion_wake="$(get_motion_wake)" + +write_state_file "$DISPLAY_MODE_FILE" "$current_display_mode" +write_state_file "$CURRENT_BRIGHTNESS_FILE" "$current_brightness" +write_state_file "$PRESENCE_BRIGHTNESS_FILE" "$presence_brightness" +write_state_file "$PRESENCE_TIMEOUT_FILE" "$presence_timeout" +write_state_file "$PRESENCE_ACTIVE_FILE" "OFF" +write_state_file "$MOTION_WAKE_FILE" "$motion_wake" + +# Enable manual DPMS control without configuring an automatic display-off timeout. +/usr/bin/xset +dpms + +# A service restart ends temporary presence and restores the selected base mode. +screensaver_stop +set_presence_active "OFF" +apply_display_mode_base_state +sync_camera_service + +# Remove retained commands from the two controls replaced by Display Mode. +for legacy_topic in \ + "$LEGACY_SCREEN_COMMAND_TOPIC" \ + "$LEGACY_SCREENSAVER_COMMAND_TOPIC"; do + mqtt_publish \ + -r \ + -n \ + -t "$legacy_topic" \ + >/dev/null 2>&1 || true +done + +publish_retained "$DISPLAY_MODE_STATE_TOPIC" "$current_display_mode" +publish_retained "$CURRENT_BRIGHTNESS_STATE_TOPIC" "$current_brightness" +publish_retained "$PRESENCE_BRIGHTNESS_STATE_TOPIC" "$presence_brightness" +publish_retained "$PRESENCE_TIMEOUT_STATE_TOPIC" "$presence_timeout" +publish_retained "$PRESENCE_ACTIVE_STATE_TOPIC" "OFF" +publish_retained "$MOTION_WAKE_STATE_TOPIC" "$motion_wake" + +#:########################################################################################:# +# State Reporting # +#:########################################################################################:# + +( + previous_display_mode="" + previous_screen_state="" + previous_actual_brightness="" + previous_current_brightness="" + previous_presence_brightness="" + previous_presence_active="" + previous_presence_timeout="" + previous_motion_wake="" + previous_volume="" + previous_mute_state="" + previous_screensaver_state="" + last_full_state_publish=0 + + while true; do + + current_display_mode="$(get_display_mode)" + current_screen_state="$(get_screen_state)" + actual_brightness="$(get_physical_brightness)" + saved_current_brightness="$(get_current_brightness)" + saved_presence_brightness="$(get_presence_brightness)" + current_presence_active="$(get_presence_active)" + saved_presence_timeout="$(get_presence_timeout)" + current_motion_wake="$(get_motion_wake)" + + audio_state="$( + /usr/bin/wpctl get-volume @DEFAULT_AUDIO_SINK@ + )" + + current_volume="$( + /usr/bin/awk \ + '{ printf "%.0f\n", $2 * 100 }' \ + <<< "$audio_state" + )" + + if /usr/bin/grep -q '\[MUTED\]' <<< "$audio_state"; then + current_mute_state="ON" + else + current_mute_state="OFF" + fi + + if screensaver_is_running; then + current_screensaver_state="ON" + else + current_screensaver_state="OFF" + fi + + state_report_epoch="$(/usr/bin/date +%s)" + if (( state_report_epoch - last_full_state_publish >= MQTT_REPUBLISH_INTERVAL_SECONDS )); then + # Reassert retained state after a broker restart, even when unchanged. + mqtt_publish -t "$MQTT_HEARTBEAT_TOPIC" -m "$state_report_epoch" + publish_retained "$DISPLAY_MODE_STATE_TOPIC" "$current_display_mode" + if [[ "$current_screen_state" == "ON" || "$current_screen_state" == "OFF" ]]; then + publish_retained "$SCREEN_STATE_TOPIC" "$current_screen_state" + fi + if [[ "$actual_brightness" =~ ^[0-9]+$ ]]; then + publish_retained "$ACTUAL_BRIGHTNESS_STATE_TOPIC" "$actual_brightness" + fi + publish_retained "$CURRENT_BRIGHTNESS_STATE_TOPIC" "$saved_current_brightness" + publish_retained "$PRESENCE_BRIGHTNESS_STATE_TOPIC" "$saved_presence_brightness" + publish_retained "$PRESENCE_ACTIVE_STATE_TOPIC" "$current_presence_active" + publish_retained "$PRESENCE_TIMEOUT_STATE_TOPIC" "$saved_presence_timeout" + publish_retained "$MOTION_WAKE_STATE_TOPIC" "$current_motion_wake" + if [[ "$current_volume" =~ ^[0-9]+$ ]]; then + publish_retained "$VOLUME_STATE_TOPIC" "$current_volume" + fi + publish_retained "$MUTE_STATE_TOPIC" "$current_mute_state" + publish_retained "$SCREENSAVER_STATE_TOPIC" "$current_screensaver_state" + last_full_state_publish="$state_report_epoch" + fi + + if [[ "$current_display_mode" != "$previous_display_mode" ]]; then + publish_retained "$DISPLAY_MODE_STATE_TOPIC" "$current_display_mode" + previous_display_mode="$current_display_mode" + fi + + if [[ "$current_screen_state" == "ON" || + "$current_screen_state" == "OFF" ]]; then + if [[ "$current_screen_state" != "$previous_screen_state" ]]; then + publish_retained "$SCREEN_STATE_TOPIC" "$current_screen_state" + previous_screen_state="$current_screen_state" + fi + fi + + if [[ "$actual_brightness" =~ ^[0-9]+$ ]] && + [[ "$actual_brightness" != "$previous_actual_brightness" ]]; then + publish_retained "$ACTUAL_BRIGHTNESS_STATE_TOPIC" "$actual_brightness" + previous_actual_brightness="$actual_brightness" + fi + + if [[ "$saved_current_brightness" != "$previous_current_brightness" ]]; then + publish_retained "$CURRENT_BRIGHTNESS_STATE_TOPIC" "$saved_current_brightness" + previous_current_brightness="$saved_current_brightness" + fi + + if [[ "$saved_presence_brightness" != "$previous_presence_brightness" ]]; then + publish_retained "$PRESENCE_BRIGHTNESS_STATE_TOPIC" "$saved_presence_brightness" + previous_presence_brightness="$saved_presence_brightness" + fi + + if [[ "$current_presence_active" != "$previous_presence_active" ]]; then + publish_retained "$PRESENCE_ACTIVE_STATE_TOPIC" "$current_presence_active" + previous_presence_active="$current_presence_active" + fi + + if [[ "$saved_presence_timeout" != "$previous_presence_timeout" ]]; then + publish_retained "$PRESENCE_TIMEOUT_STATE_TOPIC" "$saved_presence_timeout" + previous_presence_timeout="$saved_presence_timeout" + fi + + if [[ "$current_motion_wake" != "$previous_motion_wake" ]]; then + publish_retained "$MOTION_WAKE_STATE_TOPIC" "$current_motion_wake" + previous_motion_wake="$current_motion_wake" + fi + + if [[ "$current_volume" =~ ^[0-9]+$ ]] && + [[ "$current_volume" != "$previous_volume" ]]; then + publish_retained "$VOLUME_STATE_TOPIC" "$current_volume" + previous_volume="$current_volume" + fi + + if [[ "$current_mute_state" != "$previous_mute_state" ]]; then + publish_retained "$MUTE_STATE_TOPIC" "$current_mute_state" + previous_mute_state="$current_mute_state" + fi + + if [[ "$current_screensaver_state" != "$previous_screensaver_state" ]]; then + publish_retained "$SCREENSAVER_STATE_TOPIC" "$current_screensaver_state" + previous_screensaver_state="$current_screensaver_state" + fi + + /usr/bin/sleep 2 + done +) & + +state_reporter_pid="$!" + +#:########################################################################################:# +# Event Listeners # +#:########################################################################################:# + +rm -f "$MQTT_EVENT_FIFO" "$TOUCH_EVENT_FIFO" +mkfifo "$MQTT_EVENT_FIFO" "$TOUCH_EVENT_FIFO" +chmod 600 "$MQTT_EVENT_FIFO" "$TOUCH_EVENT_FIFO" + +# Open both FIFOs read/write in the parent so listener startup does not block and +# a listener failure cannot silently end the main event loop. +exec 3<>"$MQTT_EVENT_FIFO" +exec 4<>"$TOUCH_EVENT_FIFO" + +/usr/bin/stdbuf -oL /usr/bin/mosquitto_sub \ + -t "$DISPLAY_MODE_COMMAND_TOPIC" \ + -t "$CURRENT_BRIGHTNESS_COMMAND_TOPIC" \ + -t "$PRESENCE_BRIGHTNESS_COMMAND_TOPIC" \ + -t "$PRESENCE_TIMEOUT_COMMAND_TOPIC" \ + -t "$PRESENCE_END_COMMAND_TOPIC" \ + -t "$MOTION_STATE_TOPIC" \ + -t "$MOTION_WAKE_COMMAND_TOPIC" \ + -t "$VOLUME_COMMAND_TOPIC" \ + -t "$MUTE_COMMAND_TOPIC" \ + -t "$CHROME_RESTART_COMMAND_TOPIC" \ + -t "$MQTT_HEARTBEAT_TOPIC" \ + -F "%t|%p" \ + > "$MQTT_EVENT_FIFO" & + +mqtt_listener_pid="$!" + +( + /usr/bin/stdbuf \ + -oL \ + /usr/bin/xinput test-xi2 --root | + /usr/bin/awk ' + /EVENT type 22 \(RawTouchBegin\)/ { + print "TOUCH" + fflush() + } + ' +) > "$TOUCH_EVENT_FIFO" & + +touch_listener_pid="$!" + +cleanup() { + cancel_presence_ramp + + for process_id in \ + "$state_reporter_pid" \ + "$mqtt_listener_pid" \ + "$touch_listener_pid"; do + if /usr/bin/kill -0 "$process_id" >/dev/null 2>&1; then + /usr/bin/kill "$process_id" >/dev/null 2>&1 || true + fi + done + + exec 3>&- 3<&- + exec 4>&- 4<&- + + rm -f "$MQTT_EVENT_FIFO" "$TOUCH_EVENT_FIFO" +} + +trap cleanup EXIT INT TERM + +#:########################################################################################:# +# MQTT Command Handler # +#:########################################################################################:# + +current_motion_state="OFF" + +handle_mqtt_message() { + local topic="$1" + local payload="$2" + + case "$topic" in + + "$MQTT_HEARTBEAT_TOPIC") + if [[ "$payload" =~ ^[0-9]+$ ]]; then + last_mqtt_heartbeat_epoch="$payload" + fi + ;; + + "$DISPLAY_MODE_COMMAND_TOPIC") + case "${payload^^}" in + "SCREEN LOCK") + set_display_mode "Screen Lock" + ;; + + "SCREEN OFF") + set_display_mode "Screen Off" + ;; + + "SCREENSAVER") + set_display_mode "Screensaver" + ;; + + "SCREEN ON") + set_display_mode "Screen On" + ;; + esac + ;; + + "$CURRENT_BRIGHTNESS_COMMAND_TOPIC") + if [[ "$payload" =~ ^[0-9]+$ ]]; then + payload="$(clamp_integer "$payload" 1 100)" + write_state_file "$CURRENT_BRIGHTNESS_FILE" "$payload" + publish_retained "$CURRENT_BRIGHTNESS_STATE_TOPIC" "$payload" + + if [[ "$(get_presence_active)" != "ON" ]]; then + case "$(get_display_mode)" in + "Screensaver"|"Screen On") + set_physical_brightness "$payload" + ;; + esac + fi + fi + ;; + + "$PRESENCE_BRIGHTNESS_COMMAND_TOPIC") + if [[ "$payload" =~ ^[0-9]+$ ]]; then + payload="$(clamp_integer "$payload" 1 100)" + write_state_file "$PRESENCE_BRIGHTNESS_FILE" "$payload" + publish_retained "$PRESENCE_BRIGHTNESS_STATE_TOPIC" "$payload" + + if [[ "$(get_presence_active)" == "ON" ]]; then + set_physical_brightness "$payload" + fi + fi + ;; + + "$PRESENCE_TIMEOUT_COMMAND_TOPIC") + if [[ "$payload" =~ ^[0-9]+$ ]]; then + payload="$(clamp_integer "$payload" 5 86400)" + write_state_file "$PRESENCE_TIMEOUT_FILE" "$payload" + publish_retained "$PRESENCE_TIMEOUT_STATE_TOPIC" "$payload" + + if [[ "$(get_presence_active)" == "ON" ]]; then + if [[ "$current_motion_state" != "ON" ]] || + [[ "$(get_motion_wake)" != "ON" ]]; then + schedule_presence_ramp + fi + fi + fi + ;; + + "$PRESENCE_END_COMMAND_TOPIC") + if [[ "$payload" =~ ^[0-9]+$ ]] && + (( payload >= 1 && payload <= 3600 )); then + schedule_presence_ramp "$payload" + fi + ;; + + "$MOTION_STATE_TOPIC") + case "${payload^^}" in + ON) + current_motion_state="ON" + + if [[ "$(get_motion_wake)" == "ON" ]] && + [[ "$(get_display_mode)" != "Screen Lock" ]]; then + activate_presence + fi + ;; + + OFF) + current_motion_state="OFF" + + if [[ "$(get_motion_wake)" == "ON" ]] && + [[ "$(get_presence_active)" == "ON" ]]; then + schedule_presence_ramp + fi + ;; + esac + ;; + + "$MOTION_WAKE_COMMAND_TOPIC") + case "${payload^^}" in + ON) + write_state_file "$MOTION_WAKE_FILE" "ON" + publish_retained "$MOTION_WAKE_STATE_TOPIC" "ON" + sync_camera_service + + if [[ "$current_motion_state" == "ON" ]] && + [[ "$(get_display_mode)" != "Screen Lock" ]]; then + activate_presence + fi + ;; + + OFF) + write_state_file "$MOTION_WAKE_FILE" "OFF" + publish_retained "$MOTION_WAKE_STATE_TOPIC" "OFF" + sync_camera_service + + # Disabling Motion Wake stops current motion from indefinitely holding + # presence active. Touch-triggered presence still uses the same timeout. + if [[ "$current_motion_state" == "ON" ]] && + [[ "$(get_presence_active)" == "ON" ]]; then + schedule_presence_ramp + fi + ;; + esac + ;; + + "$VOLUME_COMMAND_TOPIC") + if [[ "$payload" =~ ^[0-9]+$ ]]; then + payload="$(clamp_integer "$payload" 0 100)" + + /usr/bin/wpctl \ + set-volume \ + @DEFAULT_AUDIO_SINK@ \ + "${payload}%" + fi + ;; + + "$MUTE_COMMAND_TOPIC") + case "${payload^^}" in + ON) + /usr/bin/wpctl set-mute @DEFAULT_AUDIO_SINK@ 1 + ;; + + OFF) + /usr/bin/wpctl set-mute @DEFAULT_AUDIO_SINK@ 0 + ;; + esac + ;; + + "$CHROME_RESTART_COMMAND_TOPIC") + case "${payload^^}" in + PRESS|RESTART) + restart_chrome_kiosk + ;; + esac + ;; + + esac +} + +#:########################################################################################:# +# Main Event Loop # +#:########################################################################################:# + +last_mqtt_heartbeat_epoch="$(/usr/bin/date +%s)" + +while true; do + + if ! /usr/bin/kill -0 "$mqtt_listener_pid" >/dev/null 2>&1; then + exit 1 + fi + + if ! /usr/bin/kill -0 "$touch_listener_pid" >/dev/null 2>&1; then + exit 1 + fi + + current_epoch="$(/usr/bin/date +%s)" + if (( current_epoch - last_mqtt_heartbeat_epoch > MQTT_HEARTBEAT_TIMEOUT_SECONDS )); then + exit 1 + fi + + if IFS='|' read -r -t 0.20 -u 3 topic payload; then + handle_mqtt_message "$topic" "$payload" + + # Drain any additional MQTT messages already waiting in the FIFO. + while IFS='|' read -r -t 0.01 -u 3 topic payload; do + handle_mqtt_message "$topic" "$payload" + done + fi + + while IFS= read -r -t 0.01 -u 4 touch_event; do + if [[ "$touch_event" == "TOUCH" ]]; then + handle_touch_activity + fi + done + + # Check the requested display mode after every event-loop cycle. + # The MQTT read timeout limits this to approximately five checks per second. + enforce_display_mode + +done diff --git a/runtime/systemd.env.example b/runtime/systemd.env.example new file mode 100644 index 0000000..05f68c5 --- /dev/null +++ b/runtime/systemd.env.example @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +# Values used by systemd ExecStopPost. Keep these simple (no spaces). +KIOSK_ID=my_kiosk +STATUS_ROOT=kiosk/status diff --git a/telemetry/kiosk-telemetry.py b/telemetry/kiosk-telemetry.py new file mode 100755 index 0000000..09c91ae --- /dev/null +++ b/telemetry/kiosk-telemetry.py @@ -0,0 +1,245 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-3.0-or-later +"""Publish low-overhead Linux kiosk performance telemetry to MQTT.""" + +import glob +import json +import os +import socket +import time + +import psutil +import paho.mqtt.client as mqtt # type: ignore[import-not-found] + + +MQTT_HOST = os.environ["MQTT_HOST"] +MQTT_PORT = int(os.environ.get("MQTT_PORT", "1883")) +MQTT_USER = os.environ.get("MQTT_USER") +MQTT_PASSWORD = os.environ.get("MQTT_PASSWORD") +KIOSK_ID = os.environ.get("KIOSK_ID", "kiosk") +KIOSK_ENTITY_PREFIX = os.environ.get("KIOSK_ENTITY_PREFIX", f"{KIOSK_ID}_kiosk") +KIOSK_NAME = os.environ.get("KIOSK_NAME", f"{KIOSK_ID.replace('-', ' ').title()} Kiosk") +KIOSK_MANUFACTURER = os.environ.get("KIOSK_MANUFACTURER", "Unknown") +KIOSK_MODEL = os.environ.get("KIOSK_MODEL", "Linux Touchscreen Kiosk") +MQTT_TOPIC = os.environ.get("MQTT_TOPIC", f"{KIOSK_ID}/kiosk/performance") +SAMPLE_SECONDS = max(5, int(os.environ.get("SAMPLE_SECONDS", "10"))) + +STATE_TOPIC = f"{MQTT_TOPIC}/state" +AVAILABILITY_TOPIC = f"{MQTT_TOPIC}/availability" +DISCOVERY_PREFIX = os.environ.get("MQTT_DISCOVERY_PREFIX", "homeassistant") + +DEVICE = { + "identifiers": [KIOSK_ENTITY_PREFIX], + "name": KIOSK_NAME, + "manufacturer": KIOSK_MANUFACTURER, + "model": KIOSK_MODEL, +} + +METRICS = { + "system_cpu_percent": ("System CPU", "%", None, "measurement", "mdi:cpu-64-bit"), + "system_iowait_percent": ("CPU I/O Wait", "%", None, "measurement", "mdi:timer-sand"), + "load_1m": ("Load 1 Minute", None, None, "measurement", "mdi:gauge"), + "load_5m": ("Load 5 Minutes", None, None, "measurement", "mdi:gauge"), + "memory_percent": ("Memory Used", "%", None, "measurement", "mdi:memory"), + "cpu_temperature": ("CPU Temperature", "°C", "temperature", "measurement", "mdi:thermometer"), + "cpu_frequency": ("CPU Frequency", "MHz", "frequency", "measurement", "mdi:sine-wave"), + "fan_speed": ("Fan Speed", "rpm", None, "measurement", "mdi:fan"), + "processor_fan_speed": ("Processor Fan Speed", "rpm", None, "measurement", "mdi:fan"), + "motherboard_fan_speed": ("Motherboard Fan Speed", "rpm", None, "measurement", "mdi:fan"), + "chrome_cpu_percent": ("Chrome CPU", "%", None, "measurement", "mdi:google-chrome"), + "chrome_browser_cpu_percent": ("Chrome Browser CPU", "%", None, "measurement", "mdi:web"), + "chrome_renderer_cpu_percent": ("Chrome Renderer CPU", "%", None, "measurement", "mdi:monitor-dashboard"), + "chrome_gpu_cpu_percent": ("Chrome GPU Process CPU", "%", None, "measurement", "mdi:expansion-card"), + "chrome_utility_cpu_percent": ("Chrome Utility CPU", "%", None, "measurement", "mdi:cog-transfer"), + "chrome_memory": ("Chrome Memory", "MB", "data_size", "measurement", "mdi:memory"), + "chrome_processes": ("Chrome Processes", None, None, "measurement", "mdi:format-list-numbered"), + "gpu_busy_percent": ("GPU Busy", "%", None, "measurement", "mdi:expansion-card-variant"), + "network_receive_rate": ("Network Receive Rate", "kB/s", "data_rate", "measurement", "mdi:download-network"), + "network_transmit_rate": ("Network Transmit Rate", "kB/s", "data_rate", "measurement", "mdi:upload-network"), + "disk_read_rate": ("Disk Read Rate", "kB/s", "data_rate", "measurement", "mdi:harddisk"), + "disk_write_rate": ("Disk Write Rate", "kB/s", "data_rate", "measurement", "mdi:harddisk"), +} + + +def round_or_none(value, digits=1): + return round(value, digits) if value is not None else None + + +def cpu_temperature(): + values = [] + try: + for entries in psutil.sensors_temperatures().values(): + values.extend(entry.current for entry in entries if entry.current is not None) + except (AttributeError, OSError): + pass + return max(values) if values else None + + +def fan_speeds(): + result: dict[str, float | None] = { + "maximum": None, + "processor": None, + "motherboard": None, + } + try: + for entries in psutil.sensors_fans().values(): + for entry in entries: + if entry.current is None: + continue + result["maximum"] = max(result["maximum"] or 0, entry.current) + label = (entry.label or "").lower() + if "processor" in label: + result["processor"] = entry.current + elif "motherboard" in label: + result["motherboard"] = entry.current + except (AttributeError, OSError): + pass + return result + + +def gpu_busy_percent(): + for pattern in ( + "/sys/class/drm/card*/device/gpu_busy_percent", + "/sys/class/drm/card*/gt_busy_percent", + ): + for path in glob.glob(pattern): + try: + with open(path, encoding="ascii") as source: + return float(source.read().strip()) + except (OSError, ValueError): + continue + return None + + +def chrome_processes(): + processes = [] + for process in psutil.process_iter(["name", "cmdline"]): + try: + name = (process.info["name"] or "").lower() + command = " ".join(process.info["cmdline"] or []).lower() + if not any(token in name for token in ("chrome", "chromium")): + continue + if "--type=renderer" in command: + group = "renderer" + elif "--type=gpu-process" in command: + group = "gpu" + elif "--type=utility" in command: + group = "utility" + elif "--type=" not in command: + group = "browser" + else: + group = "other" + process.cpu_percent(None) + processes.append((process, group)) + except (psutil.AccessDenied, psutil.NoSuchProcess, psutil.ZombieProcess): + continue + return processes + + +def publish_discovery(client): + for key, (name, unit, device_class, state_class, icon) in METRICS.items(): + config = { + "name": name, + "unique_id": f"{KIOSK_ENTITY_PREFIX}_{key}", + "state_topic": STATE_TOPIC, + "availability_topic": AVAILABILITY_TOPIC, + "value_template": f"{{{{ value_json.{key} }}}}", + "device": DEVICE, + "icon": icon, + } + if unit: + config["unit_of_measurement"] = unit + if device_class: + config["device_class"] = device_class + if state_class: + config["state_class"] = state_class + topic = f"{DISCOVERY_PREFIX}/sensor/{KIOSK_ENTITY_PREFIX}/{key}/config" + client.publish(topic, json.dumps(config, separators=(",", ":")), qos=1, retain=True) + + +def on_connect(client, userdata, flags, reason_code, properties=None): + """Restore all MQTT state after the initial connection or a reconnect.""" + publish_discovery(client) + client.publish(AVAILABILITY_TOPIC, "online", qos=1, retain=True) + + +def collect_sample(): + chrome = chrome_processes() + net_before = psutil.net_io_counters() + disk_before = psutil.disk_io_counters() + cpu_times = psutil.cpu_times_percent(interval=SAMPLE_SECONDS, percpu=False) + net_after = psutil.net_io_counters() + disk_after = psutil.disk_io_counters() + + cpu_by_group = {group: 0.0 for group in ("browser", "renderer", "gpu", "utility", "other")} + chrome_memory = 0 + active_processes = 0 + for process, group in chrome: + try: + cpu_by_group[group] += process.cpu_percent(None) + chrome_memory += process.memory_info().rss + active_processes += 1 + except (psutil.AccessDenied, psutil.NoSuchProcess, psutil.ZombieProcess): + continue + + load_1m, load_5m, _ = os.getloadavg() + frequency = psutil.cpu_freq() + fans = fan_speeds() + interval = float(SAMPLE_SECONDS) + disk_read_rate = None + disk_write_rate = None + if disk_before is not None and disk_after is not None: + disk_read_rate = (disk_after.read_bytes - disk_before.read_bytes) / interval / 1024 + disk_write_rate = (disk_after.write_bytes - disk_before.write_bytes) / interval / 1024 + sample = { + "timestamp": int(time.time()), + "hostname": socket.gethostname(), + "sample_seconds": SAMPLE_SECONDS, + "system_cpu_percent": round_or_none(100.0 - cpu_times.idle), + "system_iowait_percent": round_or_none(getattr(cpu_times, "iowait", 0.0)), + "load_1m": round(load_1m, 2), + "load_5m": round(load_5m, 2), + "memory_percent": round_or_none(psutil.virtual_memory().percent), + "cpu_temperature": round_or_none(cpu_temperature()), + "cpu_frequency": round_or_none(frequency.current if frequency else None, 0), + "fan_speed": round_or_none(fans["maximum"], 0), + "processor_fan_speed": round_or_none(fans["processor"], 0), + "motherboard_fan_speed": round_or_none(fans["motherboard"], 0), + "chrome_browser_cpu_percent": round_or_none(cpu_by_group["browser"]), + "chrome_renderer_cpu_percent": round_or_none(cpu_by_group["renderer"]), + "chrome_gpu_cpu_percent": round_or_none(cpu_by_group["gpu"]), + "chrome_utility_cpu_percent": round_or_none(cpu_by_group["utility"]), + "chrome_cpu_percent": round_or_none(sum(cpu_by_group.values())), + "chrome_memory": round(chrome_memory / 1048576, 1), + "chrome_processes": active_processes, + "gpu_busy_percent": round_or_none(gpu_busy_percent()), + "network_receive_rate": round((net_after.bytes_recv - net_before.bytes_recv) / interval / 1024, 1), + "network_transmit_rate": round((net_after.bytes_sent - net_before.bytes_sent) / interval / 1024, 1), + "disk_read_rate": round_or_none(disk_read_rate), + "disk_write_rate": round_or_none(disk_write_rate), + } + return sample + + +def main(): + client = mqtt.Client(client_id=f"{KIOSK_ID}-kiosk-telemetry") + if MQTT_USER: + client.username_pw_set(MQTT_USER, MQTT_PASSWORD) + client.will_set(AVAILABILITY_TOPIC, "offline", qos=1, retain=True) + client.on_connect = on_connect + client.reconnect_delay_set(min_delay=1, max_delay=30) + client.connect(MQTT_HOST, MQTT_PORT, keepalive=60) + client.loop_start() + + try: + while True: + payload = json.dumps(collect_sample(), separators=(",", ":"), allow_nan=False) + client.publish(STATE_TOPIC, payload, qos=0, retain=False) + finally: + client.publish(AVAILABILITY_TOPIC, "offline", qos=1, retain=True).wait_for_publish() + client.disconnect() + client.loop_stop() + + +if __name__ == "__main__": + main() diff --git a/telemetry/kiosk-telemetry.service b/telemetry/kiosk-telemetry.service new file mode 100644 index 0000000..580fda1 --- /dev/null +++ b/telemetry/kiosk-telemetry.service @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +[Unit] +Description=Kiosk MQTT performance telemetry +Wants=network-online.target +After=network-online.target + +[Service] +Type=simple +EnvironmentFile=%h/.config/ha-kiosk/telemetry.env +ExecStart=/usr/bin/python3 %h/.local/lib/ha-kiosk-mqtt-control/kiosk-telemetry.py +Restart=always +RestartSec=10 + +[Install] +WantedBy=default.target diff --git a/telemetry/telemetry.env.example b/telemetry/telemetry.env.example new file mode 100644 index 0000000..1861e46 --- /dev/null +++ b/telemetry/telemetry.env.example @@ -0,0 +1,14 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +# Copy to ~/.config/ha-kiosk/telemetry.env. This example has no credentials. +MQTT_HOST=127.0.0.1 +MQTT_PORT=1883 +MQTT_USER= +MQTT_PASSWORD= +KIOSK_ID=my_kiosk +KIOSK_ENTITY_PREFIX=my_kiosk +KIOSK_NAME="My Kiosk" +KIOSK_MANUFACTURER=Generic +KIOSK_MODEL="Linux Touchscreen Kiosk" +MQTT_TOPIC=my_kiosk/performance +MQTT_DISCOVERY_PREFIX=homeassistant +SAMPLE_SECONDS=10