Add wifi-hack.sh

wifi-hack.sh

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+#!/usr/bin/env bash
+#
+# Script to preconfigure Manjaro ARM installer for WiFi connection
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# @linux-aarhus - root.nix.dk
+#
+
+set -e
+scriptname=$0
+tmproot="/tmp/root"
+usage(){
+    echo "Run script as root using su or sudo"
+	echo "Usage: sudo ${scriptname} /dev/mmcblkX ssid passphrase [ ip.x.y.z/24 gw.x.y.z ns.x.y.x ]"
+	exit 1	
+}
+
+# run as root
+if ! [[ $(whoami) == "root" ]] ; then
+	usage
+fi
+
+# check if arg1 is block device
+if ! [[ -b $"$1" ]]; then
+    echo "'$1' is not a block devicce"
+    exit 1
+fi
+
+# mount partition
+echo Mount sd-card root partition
+mkdir -p "${tmproot}"
+mount "$1"p2 "${tmproot}"
+
+# create wlan0 network
+# if we have 3 arguments - use dhcp
+if [[ $# -eq 3 ]] ; then
+cat << EOF >> "${tmproot}/etc/systemd/network/wlan0.network"
+[Match]
+Name=wlan0
+[Network]
+DHCP=yes
+EOF
+# if we have 6 arguments - static ip
+elif [[ $# -eq 6 ]]; then
+cat << EOF >> "${tmproot}/etc/systemd/network/wlan0.network"
+[Match]
+Name=wlan0
+[Network]
+Address=$4
+Gateway=$5
+DNS=$6
+EOF
+# argument count must be either 3 or 6
+else
+	usage
+fi
+
+# create wpa_supplicant.conf
+wpa_passphrase "$2" "$3" > "${tmproot}/etc/wpa_supplicant/wpa_supplicant-wlan0.conf"
+
+# create symlink for wlan0 service
+ln -sf "/usr/lib/systemd/system/wpa_supplicant0.service" \
+      "${tmproot}/etc/systemd/system/multi-user.target.wants/wpa_supplicant@wlan0.service"
+
+# unmount and clean up
+echo Unmounting
+umount ${tmproot}
+echo Cleaning up
+rmdir ${tmproot}
+echo Done