#!/bin/sh
# ============================================================================
#
# This file is part of the 'CalibreCOPS' 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="CalibreCOPS"
THIS_SCRIPT="CalibreCOPS"
PKG_FIRMWARE=4

############################################################
## 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?
}

###################################
## Adds the pattern of the package to AuthZyxelSkipPattern in httpd.conf
## to suppress login need
## 1st argimant [0|1] disable/enable
## 2nd argument path to conffile
FrameworkEnableLoginlessPattern()
{
	local enable=$1
	local httpdconf=$2
	local name=AuthZyxelSkipPattern

	if grep $name $httpdconf | grep "/pkg/${PKG_NAME}/" >/dev/null 
	then
		if [ $enable -eq 1 ] ; then
			# nothing to do
			return
		else
			sed -i "s|/pkg/${PKG_NAME}/||" $httpdconf
		fi
	else
		if [ $enable -eq 1 ] ; then
			sed -i "s|${name} |${name} /pkg/${PKG_NAME}/ |" $httpdconf
		else
			# nothing to do
			return 
		fi
	fi

	# let the firmware restart the server
	touch /tmp/restart_httpd
}

#####################################
## Echo the URL of the package
FrameworkGetLink()
{
	# Do we have a webinterface at all?
	[ ! -d ${PKG_ROOT}/gui/${PKG_NAME}/ ] && exit 0

	local address=` FrameworkGetIPAddress `

	# Seach for configured ports
	local ports=
	for directory in /etc/pkg_service_conf /etc/service_conf
	do
		[ ! -d ${directory} ] && continue

		ports=` grep "^Listen" ${directory}/httpd_zld*.conf | awk '{ print $2 }' `
		ports="$ports ` grep "^<VirtualHost" ${directory}/httpd_zld*.conf | cut -d ':' -f 2 | cut -d '>' -f 1 `"
		ports=` echo $ports | tr -s ' ' | tr ' ' '\n' | sort | uniq | grep -v 8082 `
		break
	done

	for port in $ports
	do
		# Find out if it's https:
		protocol=http
		defaultport=80
		grep -i "^<VirtualHost.*${port}" -A 50 ${directory}/httpd_zld*.conf >/tmp/.$$.${PKG_NAME}

		while read line
		do
			if echo $line | grep -i "^</VirtualHost" >/dev/null
			then
				break
			fi

			if echo $line | grep -i "SSLEngine *On" >/dev/null
			then
				protocol=https
				defaultport=443
			fi
		done </tmp/.$$.${PKG_NAME}
		rm /tmp/.$$.${PKG_NAME}

		[ ${defaultport} -eq 443 ] && continue # Package manager crashes on https :$


		[ $port -eq $defaultport ] && port="" || port=":${port}"

		local url="${protocol}://${address}${port}/pkg/${PKG_NAME}/"

		echo  $url
		# We can only output a single url
		return
	done
}

######################################
## 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

		# Do we have a webinterface?
		if [ -d ${PKG_ROOT}/gui/${PKG_NAME}/ ] ; then
			# Aparently 
			for httpdconf in /etc/pkg_service_conf/httpd_package2.conf
			do
				[ ! -f ${httpdconf} ] && continue
				
				local service_conf=` dirname $httpdconf `

				echo Alias /pkg/${PKG_NAME}/ ${PKG_ROOT}/gui/${PKG_NAME}/ >${service_conf}/${PKG_NAME}.conf
				if ! grep ${PKG_NAME}.conf ${httpdconf} >/dev/null
				then
					sed -i "1iInclude ${service_conf}/${PKG_NAME}.conf" ${httpdconf}
				fi

				# Let the package manager restart the server
				touch /tmp/restart_httpd
				break
			done

			# Enable loginless access
			for httpdconf in /etc/pkg_service_conf/httpd2.conf /etc/service_conf/httpd.conf
			do
				[ ! -f ${httpdconf} ] && continue
				FrameworkEnableLoginlessPattern 1 ${httpdconf} 
				break
			done
		fi

		[ ! -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 

		return
	fi

	for httpdconf in /etc/pkg_service_conf/httpd_package2.conf
	do
		[ ! -f ${httpdconf} ] && continue
		grep -v ${PKG_NAME}.conf ${httpdconf} >/tmp/$$.httpd.conf
		mv /tmp/$$.httpd.conf ${httpdconf}
		touch /tmp/restart_httpd
	break
	done

	# Disable loginless access
	for httpdconf in /etc/pkg_service_conf/httpd2.conf /etc/service_conf/httpd.conf
	do
		[ ! -f ${httpdconf} ] && continue
		EnableLoginlessPattern 0 ${httpdconf} 
		break
	done
}

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"

FrameworkParseParams "$@"

exit 0
