#!/bin/sh

###
 #
 # FreeWLAN Addons - http://www.freewlan.info
 #
 # 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 2
 # 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, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 # MA  02110-1301, USA
 #
 # http://www.gnu.org/copyleft/gpl.html
 #
###

. /etc/functions.sh

config_load autoupdate
config_get url method url
config_get auto method auto
config_get branch method branch
config_load mailservice
config_get addonupdatecheck mail addonupdatecheck
config_get to mail to

if [ -z $branch ]; then
	branch="stable"
fi

# Random sleep time to decrease server load
if [ "$1" = "cron" ]; then
	sleep "$((0x$(head -c2 /dev/urandom | hexdump | awk '$2 > 0 {print $2}') % 3600))"
fi

download_install () {
		instversion="$(cat /etc/addon_version)"
		wget -q -O /tmp/install.sh $url/$branch/$instversion/install.sh 2>/dev/null
		if [ ! "$?" -eq "0" ]; then exit 0; fi
}

if enabled $auto || [ "$1" = "manual" ]; then
	while true; do
		download_install
		sh /tmp/install.sh
		if [ "$instversion" == "$(cat /etc/addon_version)" ]; then
			echo "Update failed!"
			exit 1
		fi
	done
else
	if [ "$1" != "cron" ]; then
		echo "Autoupdate is disabled. Try $0 manual"
	else
		if enabled $addonupdatecheck; then
			download_install
			touch /tmp/.addonupdatecheckmail
			if ! grep $instversion /tmp/.addonupdatecheckmail > /dev/null; then
				. /tmp/network-config
				MAIL_TO="$to";
				ipaddress=`ifconfig $wan_ifname |grep inet|cut -d":" -f2|cut -d" " -f1`;
echo -e "
There are Addon Updates available.

For further information go to:
http://$ipaddress/cgi-bin/webif/autoupdate.sh

" | mail "Fonera: ($(cat /etc/hostname)) AddonUpdateCheck" "$MAIL_TO"
				echo $instversion >> /tmp/.addonupdatecheckmail
			fi
		fi
	fi
fi