#!/bin/sh
. /etc/functions.sh

config_load fon
config_get fallback wan fallback

exists() {
	( < $1 ) 2>&-
}
equal() {
	case "$1" in
		"$2") return 0 ;;
		*) return 255 ;;
	esac
}

save_setting() {
	mkdir -p /tmp/.webif
	cat >> /tmp/.webif/config-$1 <<EOF
config update "$2"
	option "$3" "$4"
EOF
}

commit_settings() {(
	reset_cb
	option_cb() {
		# FixME: ';' cannot be used in any config values
		updatestr="${updatestr:+$updatestr;}$CONFIG_SECTION.$1=$2"
	}

	for cfg in /tmp/.webif/config-*; do
		exists $cfg || continue
		export cfgfile="${cfg##*config-}"
		export updatestr=
		. $cfg

		lock /tmp/.webif/update-$cfgfile
		awk \
			-v cfgfile="/etc/config/$cfgfile" \
			-v updatestr="$updatestr" \
			-f /usr/lib/webif/uci-update.awk \
			-f - > /etc/config/$cfgfile.new <<EOF
BEGIN {
	cfg = read_file(cfgfile)
	print update_config(cfg, updatestr)
}
EOF
		equal "$?" 0 && {
			mv /etc/config/$cfgfile.new /etc/config/$cfgfile
			rm -f /tmp/.webif/config-$cfgfile
		}
		lock -u /tmp/.webif/update-$cfgfile
	done
)}


# wait 180sec to establish full WAN uplink, test it after that and reboot to AP mode (dhcp) if connection could not be detected
sleep 180
if ! wget -q --spider http://www.chpohl.de/fonera/webifdemo/cgi_bin/webif/settings.fon.jpg; then
	echo "`uptime | awk -F" " '{print $1}'`: NO internet connection detected, bringing down ath2" >>/tmp/.startup_log
	echo "`uptime | awk -F" " '{print $1}'`: WiFi Uplink does not seem to work properly, switching to 'dhcp'-mode and restarting..." >/dev/console
	killall wpa_supplicant
	if ! equal "$fallback" "0"
		save_setting fon wan mode "dhcp"
		commit_settings
	fi
	/bin/restartfonera
fi