Automatically set the wireless regulatory domain

Automatically sets the wireless regulatory domain when a wireless
device is connected, or on timezone change.

Resolves #464

LICENSES/ISC.txt

@@ -0,0 +1,5 @@
+<copyright notice>
+
+Permission to use, copy, modify, and /or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

mkosi.extra/usr/lib/iw-set-regdomain

@@ -0,0 +1,83 @@
+#!/bin/sh
+
+# SPDX-License-Identifier: ISC
+# SPDX-FileCopyrightText: 2025 Thomas Duckworth <tduck@filotimoproject.org>
+# SPDX-FileCopyrightText: 2009-2014 Red Hat, Inc.
+# SPDX-FileCopyrightText: 2025 Velocity Limitless, LLC.
+
+# See https://gitlab.com/VelocityLimitless/Projects/iw-setregdomain
+
+# Copyright 2009-2014 Red Hat, Inc.  All rights reserved.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+REGDOMAIN=/etc/iw-regdomain
+LOCALTIME=/etc/localtime
+
+LOGGER="/usr/bin/logger -t iw-set-regdomain"
+
+getcountry() {
+	while read c a z r
+	do
+		if [ "$z" = "$ZONE" ]
+		then
+			echo $c
+			break
+		fi
+	done < /usr/share/zoneinfo/zone.tab
+}
+
+if [ -f $REGDOMAIN ]
+then
+	# This should set COUNTRY
+	. $REGDOMAIN
+	if [ -n "$COUNTRY" ]
+	then
+		/usr/bin/iw reg set $COUNTRY
+		exit
+	fi
+fi
+
+if [ -f "$LOCALTIME" ]
+then
+	ZONE=$(readlink -f $LOCALTIME)
+	ZONE=${ZONE#/usr/share/zoneinfo/}
+else
+	$LOGGER -s "Timezone information not found. Unable to set wireless regulatory domain."
+	exit 1
+fi
+
+if [ -z "$ZONE" -o "$ZONE" = "$LOCALTIME" ]
+then
+	$LOGGER -s "Could not determine timezone. Unable to set wireless regulatory domain."
+	exit 1
+fi
+
+COUNTRY=$(getcountry)
+
+if [ -z "$COUNTRY" ]
+then
+	case "$ZONE" in
+        UTC|UCT|Universal|Zulu|GMT|Etc/UTC|Etc/UCT|Etc/Universal|Etc/Zulu|Etc/GMT)
+            $LOGGER "Timezone is $ZONE, with no associated country. Not setting wireless regulatory domain."
+            exit 0
+            ;;
+    esac
+
+    $LOGGER -s "Could not determine country for $ZONE. Unable to set wireless regulatory domain."
+    exit 1
+fi
+
+$LOGGER "Setting regulatory domain to $COUNTRY based on timezone ($ZONE)."
+/usr/bin/iw reg set $COUNTRY

mkosi.extra/usr/lib/systemd/system-preset/50-kde-linux.preset

@@ -43,6 +43,7 @@ enable switcheroo-control.service
 enable kde-linux-bootloader-visibility.service
 enable kde-linux-btrfs.service
 enable kde-linux-configure-firefox.path
+enable kde-linux-iw-set-regdomain.path
 enable kde-linux-live-setup.service
 enable kde-linux-powertop.service
 enable kde-linux-volatile-var-lib-flatpak.service

mkosi.extra/usr/lib/systemd/system/kde-linux-iw-set-regdomain.path

@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+# SPDX-FileCopyrightText: 2025 Thomas Duckworth <tduck@filotimoproject.org>
+
+[Unit]
+Description=Monitor Timezone Changes to Set Wireless Regulatory Domain
+
+[Path]
+PathChanged=/etc/localtime
+Unit=kde-linux-iw-set-regdomain.service
+
+[Install]
+WantedBy=multi-user.target

mkosi.extra/usr/lib/systemd/system/kde-linux-iw-set-regdomain.service

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+# SPDX-FileCopyrightText: 2025 Thomas Duckworth <tduck@filotimoproject.org>
+
+[Unit]
+Description=Set Wireless Regulatory Domain on Timezone Change
+
+[Service]
+Type=oneshot
+ExecStart=/usr/lib/iw-set-regdomain

mkosi.extra/usr/lib/udev/rules.d/85-iw-regulatory.rules

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: ISC
+# SPDX-FileCopyrightText: 2025 Thomas Duckworth <tduck@filotimoproject.org>
+# SPDX-FileCopyrightText: 2009-2014 Red Hat, Inc.
+# SPDX-FileCopyrightText: 2025 Velocity Limitless, LLC.
+
+# Set wireless regulatory domain at device creation
+# For more information see https://gitlab.com/VelocityLimitless/Projects/iw-setregdomain
+
+SUBSYSTEM=="ieee80211", ACTION=="add", RUN+="/usr/lib/iw-set-regdomain"