#!/bin/sh
# Copyright (c) 2000-2012 Synology Inc. All rights reserved.
UPS_STATE="/run/ups_state"
UPS_ROOT="/tmp/ups"
UPS_LOCK=$UPS_ROOT"/ups.lock"
UPSSCHED_CONF="/usr/syno/etc/ups/upssched.conf"
SYNOINFO_CONF="/etc/synoinfo.conf"
SYNOINFO=$SYNOINFO_CONF
SYNOINFO_CONF_DEFAULT="/etc.defaults/synoinfo.conf"
UPSMON_CONF="/usr/syno/etc/ups/upsmon.conf"
UPSMON_CONF_BACKUP="/usr/syno/etc.defaults/ups/upsmon.conf"
UPS_CONF="/usr/syno/etc/ups/ups.conf"
UPS_CONF_BACKUP="/usr/syno/etc.defaults/ups/ups.conf"
NUTSCAN_USB_H="/usr/syno/etc/ups/nutscan-usb.h"
BIN_UPSMON="/usr/sbin/upsmon"
BIN_UPSD="/usr/sbin/upsd"
BIN_UPSC="/usr/bin/upsc"
UPSMON_PID="/run/upsmon.pid"
UPSD_PID="$UPS_STATE/upsd.pid"

if [ ! -d $UPS_ROOT ]; then
	mkdir -p $UPS_ROOT
fi

if [ ! -d $UPS_STATE ]; then
	mkdir -p $UPS_STATE
fi

SupportUPS=`/bin/get_key_value $SYNOINFO_CONF_DEFAULT supportups`
case "$SupportUPS" in
[Yy][Ee][Ss])
	;;
*)
	echo "UPS is not support here."
	exit
	;;
esac

EnableUPS=`/bin/get_key_value $SYNOINFO_CONF ups_enabled`
case "$EnableUPS" in
[Yy][Ee][Ss])
	MasterEnabled=1;;
*)
	MasterEnabled=0;;
esac

EnableSlave=`/bin/get_key_value $SYNOINFO_CONF upsslave_enabled`
case "$EnableSlave" in
[Yy][Ee][Ss])
	SlaveEnabled=1;;
*)
	SlaveEnabled=0;;
esac

UpsMode=`/bin/get_key_value $SYNOINFO_CONF ups_mode`
# ups_mode will be empty when upgrade to 4.2
if [ "x" = "x${UpsMode}" ]; then
	UpsMode="usb"
fi

StatClient=`ps -aux |grep '/usr/sbin/upsmon'|grep -cv grep`

SafeMV() {
	mv $1 $2.$$
	mv $2.$$ $2
}

UpdateUpsdConf() {
	local RAD_F_LISTEN="/usr/syno/etc/ups/upsd.conf"
	local RAD_V_IF_HEAD="Link encap"
	local RAD_V_WL_HEAD="wlan"
	local RAD_V_V6IP="inet6"
	local RAD_V_V4IP="inet"
	local IS_WLAN=0

	echo "" > $RAD_F_LISTEN
	ifconfig | while read LINE; do
		if echo "$LINE"|grep -q "$RAD_V_IF_HEAD" && echo "$LINE"|grep -q "$RAD_V_WL_HEAD"; then
			IS_WLAN=1
		elif [ "x" == "x$LINE" ]; then
			IS_WLAN=0
		fi

		if echo "$LINE"|grep -q "$RAD_V_V6IP"; then
			# work around wifi ipv6 bind fail
			if [ 0 == $IS_WLAN ];then
				echo -e "LISTEN `echo $LINE|/usr/bin/awk '/inet6 /{print$3}'|/usr/bin/cut -d '/' -f 1`" >> $RAD_F_LISTEN
			fi
		elif echo "$LINE"|grep -q "$RAD_V_V4IP"; then
			echo -e "LISTEN `echo $LINE|/usr/bin/awk '/inet /{print$2}'|/usr/bin/cut -d ':' -f 2`" >> $RAD_F_LISTEN
		fi
	done
}

StartServer() {
	UpdateUpsdConf

	local cntDaemon=`ps -aux |grep \'$BIN_UPSD\'|grep -cv grep`
	if [ $cntDaemon -gt 0 ]; then
		$BIN_UPSD -c stop
	fi
	rm $UPSD_PID
	$BIN_UPSD
}

StartClient() {
	local cntMon=`ps -aux |grep \'$BIN_UPSMON\'|grep -cv grep`
	if [ $cntMon -gt 0 ]; then
		$BIN_UPSMON -c stop
	fi
	rm $UPSMON_PID
	$BIN_UPSMON
}

StopUps() {
	ShowLog "Stop UPS Daemon"

	killall upsmon > /dev/null 2>&1
	killall upssched > /dev/null 2>&1
	killall upsd > /dev/null 2>&1
	/usr/bin/upsdrvctl stop

	#we need to check the process stopped, in some low level DS, it sometimes costs much time
	WaitStop	

	return 0
}

ForceStopUps() {
	ShowLog "Stop UPS timeout, Force stop UPS"

	killall -9 upsmon > /dev/null 2>&1
	killall -9 upssched > /dev/null 2>&1
	killall -9 upsd > /dev/null 2>&1
	/usr/bin/upsdrvctl stop
	sleep 3
}

WaitStop() {
	for i in `seq 1 1 3`; do
		sleep 3
		local P_COUNT=`ps -aux |grep -E "(upsd|upsmon|a ups)"|grep -cv grep`
		if [ 0 -eq $P_COUNT ]; then
			return 0
		fi
	done
	ForceStopUps
	return 255
}

CheckUpsmonConf() {
	local conf_size=`stat $UPSMON_CONF |grep Size|cut -d" " -f 4`
	# mode: local/remote
	local mode=$1
	local server_ip="0.0.0.0"

	if [ 0 -eq $conf_size ]; then
		if [ -f $UPSMON_CONF_BACKUP ]; then
			/bin/cp $UPSMON_CONF_BACKUP $UPSMON_CONF
		else
			ShowLog "synoupscommon: cannot rescue $UPSMON_CONF"
		fi
	fi

	if [ "$mode" == "local" ]; then
		/bin/sed -i "/^MONITOR/c\\MONITOR ups@localhost 1 monuser secret master" $UPSMON_CONF
	elif [ "$mode" == "remote" ]; then
		if [ $# -ne 2 ]; then
			ShowLog "synoupscommon: CheckUpsmonConf(): remote mode need set server_ip"
			return 1
		fi
		server_ip=$2
		/bin/sed -i "/^MONITOR/c\\MONITOR ups@${server_ip} 1 monuser secret slave" $UPSMON_CONF
	fi

	return 0
}

ShowLog() {
	echo $1
	logger -p user.err -t upsmsg $1
}