#!/bin/sh
# ============================================================================
#
# This file is part of the 'MidnightCommander' package
# 
# 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, 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.
#
# Author: Mijzelf <Mijzelf@live.com>
#
# ============================================================================
PKG_NAME="MidnightCommander"
THIS_SCRIPT="MidnightCommander"
PKG_FIRMWARE=4

PKG_DOWNLOAD_URL=http://downloads.zyxel.nas-central.org/Users/Mijzelf/fw5
############################################################
## Check if we are in upgradig mode. From the point of view of the package
## an upgrade is a uninstall followed by a install. So if you want to preserve
## something over an upgrade, you have to detect it somehow
##
## Function sets PKG_UPGRADE > 0 when upgrading, 
## and PKG_UPGRADE=0 when not
############################################################
IsUpgrading()
{
	PKG_UPGRADING=0
	local dir=
	for dir in "/usr/local/zy-pkgs/" "/i-data/.system/zy-pkgs/"
	do
		local logfile=${dir}tmp/zypkg.log
		[ ! -f ${logfile} ] && continue

		local lastupdate=` grep "Upgrade Mode" ${logfile} | tail -n 1 | grep "\[${PKG_NAME}\]" | awk -v OFS=' ' '{print $1, $2}' `

	        [ "${lastupdate}" = "" ] && return 1

		local since1970=` TZ=GMT date -d "${lastupdate}" +%s `
		local now=`date +%s `
		local ago=""
		let ago=now-since1970
		[ $ago -eq 0 ] && ago=1
		[ 300 -gt $ago ] && PKG_UPGRADING=$ago && return 0

		return 1
	done

	# We shouldn't be here
	return 1
}

#############################################################
## Dummy logcode
#############################################################
Log() 
{
	return
}

######################################
## Find the IP address of the box
FrameworkGetIPAddress()
{
	# Detect interfaces
	local interfaces=` ifconfig | grep -e "^egiga" -e "^bond" -e "^eth" | cut -d ' ' -f 1 `

	# And find the IP (v4) address
	for interface in $interfaces
	do
		local address=` ifconfig ${interface} | grep "inet addr" | tr -s ' ' `
		if [ "${address}" != "" ] ; then
			echo ${address} | cut -d ' ' -f 2 | cut -d ':' -f 2
			return
		fi
	done
	hostname # What else?
}

#####################################
## Echo the URL of the package
FrameworkGetLink()
{
	return
}

######################################
## Status get and set
FrameworkStatus()
{
	local pkg_config_file="${PKG_ROOT}/config/${PKG_NAME}/config"
	if [ "get" = "$1" ] ; then
		if [ ! -f ${pkg_config_file} ] ; then
			FrameworkStatus set Disabled
		fi
		cat ${pkg_config_file}
		return
	elif [ "set" = "$1" ] ; then
		mkdir -p ` dirname ${pkg_config_file} `
		
		echo $2 >${pkg_config_file}
	fi
}

################################################
## Run or stop the package
FrameworkRun()
{
	if [ $1 -eq 1 ] ; then
		# Startup
		STATUS=` FrameworkStatus get `
		[ "$STATUS" != "Enabled" ] && return	# We're not enabled

		Startup
		return
	fi

	Shutdown
	
}

FrameworkVersion()
{
	local controlfile=${PKG_ROOT}/zypkg_conf/info/${PKG_NAME}.control
	local version=$( grep "^Version:" ${controlfile} | awk -F"zypkg" '{print $2}' )
	exit $version
}

FrameworkParseParams()
{
	case $1 in
		getlink)
			FrameworkGetLink
			;;
		status)
			FrameworkStatus get
			;;
		enable)
			FrameworkStatus set Enabled 
			FrameworkRun 1 </dev/null
			;;
		disable)
			FrameworkRun 0 </dev/null
			FrameworkStatus set Disabled 
			;;
		startup)
			FrameworkRun 1 </dev/null
			;;
		shutdown)
			FrameworkRun 0 </dev/null
			;;
		version)
			FrameworkVersion
			;;
	esac
}

Log

PKG_ROOT="/usr/local/zy-pkgs"


Startup()
{
	# Enable ld-linux.so on NAS5xx
	[ ! -f /lib/ld-linux.so.3 -a -f /lib/ld-linux-armhf.so.3 ] && ln -s ld-linux-armhf.so.3 /lib/ld-linux.so.3 

	for file in /bin/mc /bin/mcview /bin/mcedit
	do
		if [ "${PKG_FIRMWARE}" = "4" ] ; then
			ln -s ${PKG_ROOT}/bin/mc ${file}
		else
			local libiconv=${PKG_ROOT}/lib/libiconv.so.2
			[ ! -f ${libiconv} ] && wget ${PKG_DOWNLOAD_URL}/libiconv.so.2.gz -O - | gunzip >${libiconv}
			echo "#!/bin/sh" >${file}
			echo LD_LIBRARY_PATH=${PKG_ROOT}/lib:${LD_LIBRARY_PATH} MC_DATADIR=${PKG_ROOT}/share/mc exec ${PKG_ROOT}${file} \"\$@\" >>${file}
			chmod a+x ${file}
		fi
	done
}

Shutdown()
{
	rm /bin/mc
	rm /bin/mcview
	rm /bin/mcedit
}

FrameworkParseParams "$@"

exit 0
