wrappingS-BATTERY-CR.js File Reference

Wrappers for Battery Status API. More...

Functions
function	add_wrappers (wrappers)

Detailed Description

Wrappers for Battery Status API.

See also

https://www.w3.org/TR/battery-status/

Author

Copyright (C) 2021 Libor Polčák

License:

SPDX-License-Identifier: GPL-3.0-or-later

The navigator.getBattery() reports the state of the battery and can be misused to fingerprint users for a short term. The API was removed from Firefox, but is still supported in browsers derived from Chromium. The wrapper mimics Firefox behaviour.

See also

https://lukaszolejnik.com/battery

Bug:

Because we mimic Firefox behaviour, a Chromium derived browser becomes more easily fingerprintable. This can be fixed by properly wrapping BatteryManager.prototype getters and setters.

Function Documentation

add_wrappers()

function add_wrappers

(

wrappers

wrappers

)

Adds a list of wrapping objects to the build_wrapping_code.

This function is called from each wrapper in its file.