#!/bin/sh
# Copyright (C) 2006-2010 OpenWrt.org
# Copyright (C) 2010 Vertical Communications

do_mount_bind_etc() {
	# for: 1, ota; 2, format disk; 3, downgrade
	# we should rsync /etc files to /data/etc

        flag_name=`uci get misc.mount_bind_etc.flag_name`
        use_rsync=`uci get misc.mount_bind_etc.has_rsync`
        sync_etc=`uci get misc.mount_bind_etc.sync_etc`
        do_fac_mode=`uci get misc.mount_bind_etc.do_fac_mode`

	post_ota=0
	mkdir -p /data/etc

	boot_status=`cat /proc/xiaoqiang/boot_status`
	# not for R1D recovery system
	if [ "$use_rsync" = "1" -a "$boot_status" != "2" ]; then
		#FIXME: use flag_recover_config?
		flg_try_sys1=`nvram get flag_try_sys1_failed`
		flg_try_sys2=`nvram get flag_try_sys2_failed`
		if [ "$flg_try_sys1" = "1" -o "$flg_try_sys2" = "1" ]; then
			if [ -d /data/etc_bak -a `ls /data/etc_bak | wc -l` -gt 0 ]; then
				rm -rf /data/etc/*
				rsync -ac /data/etc_bak/* /data/etc
				sync
			fi
		fi
	fi

	flg_ota=`nvram get flag_ota_reboot`
	flg_rec=`nvram get flag_recover_config`
	if [ "$flg_ota" = "1" -o "$flg_rec" = "1" -o ! -f /etc/remove.conf ]; then
		/usr/sbin/config_pre_ota.sh
		if [ ! -f /etc/remove.conf ]
		then
			echo " ************* WARNING *******************"
			echo " ***** /rom/etc/remove.conf no exist and try to rsync files ****"
		else
			echo " *****ota: remove files in /etc/remove.conf *****"
		fi
		cat /etc/remove.conf 2>/dev/null | while read line
		do
			rm -rfv $line
		done

		if [ "$use_rsync" = "1" ]; then
			rsync -ac --ignore-existing /etc/ /data/etc

			if [ -d /plugins ] ; then
				rsync -ac /plugins/* /userdisk
			fi
		else
			echo N | cp -ri /etc/* /data/etc 2>/dev/null
		fi

		sync
		post_ota=1
	fi

	flg_format=`nvram get $flag_name`
	if [ "$flg_format" = "1" -o "$sync_etc" = "1" ]; then
		if [ "$use_rsync" = "1" ]; then
			rsync -ac --ignore-existing /etc/ /data/etc
		else
			echo N | cp -ri /etc/* /data/etc 2>/dev/null
		fi

                sync
                nvram unset $flag_name
                nvram commit
	fi

	[ "$do_fac_mode" = "1" ] && {
		# factory mode
		flg_fac=`cat /proc/xiaoqiang/ft_mode`
                if [ "$flg_fac" = "1" ]; then
                        echo N | cp -ri /etc/* /data/etc 2>/dev/null
                        sync
                fi
	}

	#replace files that size 0 in /data/etc
	cd /data/etc
	find . -size 0 | while read line
	do
		if [ -s /etc/$line -a -f /etc/$line ]; then
			#jffs2 directory's size is zero,file is not damaged
			echo "/etc damaged, recovering /etc/$line"
			cp -arf /etc/$line /data/etc/$line
			sync
		fi
	done
	cd /

	mount --bind /data/etc /etc

	if [ "$post_ota" = "1" ]
		then
		/usr/sbin/config_post_ota.sh
	fi

	[ -s /tmp/.uci.disk ] && uci import -f /tmp/.uci.disk && rm -f /tmp/.uci.disk

	[ -f /etc/sysdisk ] && cp -f /etc/sysdisk /tmp/sysdisk
}

boot_hook_add preinit_main do_mount_bind_etc