shill/bin/set_wifi_regulatory

#!/bin/sh

# Copyright 2018 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# UDEV event helper script that sets the system's WiFi regulatory domain
# from VPD data.

set -e

# TODO(quiche): When fixing crbug.com/474657, we may need to remove tr.
country_code="$(vpd_get_value region | tr "[:lower:]" "[:upper:]")"

# Reject country code with invalid characters.
if [ -n "$(echo "${country_code}" | LC_ALL=C sed 's/[A-Z0-9_\.-]//g')" ]; then
  country_code=""
fi

# TODO(quiche): Replace this code using the regions database and jq.
# crbug.com/474657.
country_code="${country_code%%.*}"
case "${country_code}" in
  "LATAM-ES-419")
    country_code="MX"
    ;;
  "NORDIC")
    country_code="SE"
    ;;
esac

if [ -n "${country_code}" ]; then
  iw reg set "${country_code}"
fi