arch-ppa/src/mkinitcpio-wifi/wifi.hook

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#!/usr/bin/ash
check_net_device () {
ip link show $1 > /dev/null 2>&1
}
poll_net_device () {
local device=$1 seconds=${2//[!0-9]}
[ "${seconds:-x}" = x ] && seconds=10
check_net_device $device && return 0
msg "Waiting $seconds seconds for network device $device ..." >&2
while ! check_net_device $device && [ "$seconds" -gt 0 ]; do
sleep 1
seconds=$(( seconds - 1 ))
done
check_net_device $device
}
check_wpa_supplicant_done () {
grep "CTRL-EVENT-CONNECTED" $1 > /dev/null
}
poll_wpa_completion () {
local logfile=$1 seconds=${2//[!0-9]}
[ "${seconds:-x}" = x ] && seconds=10
check_wpa_supplicant_done $logfile && return 0
msg "Waiting $seconds seconds for wpa_supplicant ..." >&2
while ! check_wpa_supplicant_done $logfile && [ "$seconds" -gt 0 ]; do
sleep 1
seconds=$(( seconds - 1 ))
done
check_wpa_supplicant_done $logfile
}
run_hook ()
{
local device="wlan0"
local logfile="/tmp-wpa-supplicant-log"
# wait for wlan-device
poll_net_device $device 15
msg "Starting wifi"
# set wlan-device to up
ip link set $device up || return 1
# assocciate with wifi network
wpa_supplicant -B -i $device -c /etc/wpa_supplicant/initcpio.conf -f $logfile
# wait for wpa_supplicant
poll_wpa_completion $logfile 15
# wlan-device should now be connected and ready to be assigned an ip by the net hook
}
run_cleanuphook ()
{
local device="wlan0"
local logfile="/tmp-wpa-supplicant-log"
# kill wpa_supplicant running in the background
killall wpa_supplicant
# set wlan-device link down
ip link set $device down
# wlan-device should now be fully disconnected from the wifi network
rm $logfile
}