#!/bin/sh

# $Id$
# /etc/rc.firmware
# part of m0n0wall (http://neon1.net/m0n0wall)
#
# Copyright (C) 2003 Manuel Kasper <mk@neon1.net>.
# All rights reserved.

#CFDEVICE=`cat /var/etc/cfdevice`

exec 3>&2 2>>/tmp/firmware_update.log

export ACTION=$1
export IMG=$2
if [ $# -eq 3 ]; then
	export CUSTOMIMG=$3
fi

if [ $ACTION != "upgrade" ]; then
	/sbin/umount -f /ftmp > /dev/null 2>&1
fi

backup_chflags() {
	TOPROCESS="bin lib libexec sbin usr"
	for files in $TOPROCESS; do
		/usr/sbin/mtree -Pcp /${files} | bzip2 -9 > /tmp/chflags.dist.${files}.bz2 | logger -p daemon.info -i -t UpgradeFlags
	done
}

restore_chflags() {
	TOPROCESS="bin lib libexec sbin usr"
	for files in $TOPROCESS; do
		cd / && /usr/bin/bzcat /tmp/chflags.dist.${files}.bz2 | /usr/sbin/mtree -PU -p /${files} | logger -p daemon.info -i -t UpgradeFlags
	done
}

remove_chflags() {
	TOPROCESS="bin lib libexec sbin usr"
	for files in $TOPROCESS; do
		/bin/chflags -R noschg /${files}
		/bin/chmod -R u+rw /${files}
	done
}

binary_update() {
	TGZ=$1
	ERR_F="/tmp/bdiff.log"
	rm ${ERR_F} 2>/dev/null
	/bin/mkdir /tmp/patched /tmp/patches 2>>${ERR_F}
	backup_chflags
	remove_chflags
	cd /tmp/patches
	for i in `/usr/bin/tar tvzf $TGZ | egrep -v "(^d|_md5)" | nawk '{print $9;}'`;
	 do
	   FILE=`basename ${i}`
	   echo "Working on ${i}"
	   # Untar patch file and md5 files
	   /usr/bin/tar xzf ${TGZ} ${i} ${i}.old_file_md5 ${i}.new_patch_md5 ${i}.new_file_md5 2>>${ERR_F}

	   # Apply patch - oldfile newfile patchfile
	   /usr/local/bin/bspatch /${i} /tmp/patched/${FILE} /tmp/patches/${i} 2>>${ERR_F}

	   OLD_FILE_MD5=`cat /tmp/patches/${i}.old_file_md5 2>/dev/null`
	   NEW_PATCH_MD5=`cat /tmp/patches/${i}.new_patch_md5 2>/dev/null`
	   NEW_FILE_MD5=`cat /tmp/patches/${i}.new_file_md5 2>/dev/null`
	   PATCHED_MD5=`/sbin/md5 -q /tmp/patched/${FILE} 2>/dev/null`

	   if [ "$PATCHED_MD5" = "$NEW_PATCH_MD5" ]; then
		/usr/bin/install -S  /tmp/patched/${FILE} /${i}
	   else
		#echo "${i} file does not match intended final md5."
		echo "${i} file does not match intended final md5." >> ${ERR_F}
	   fi

	   /bin/rm /tmp/patched/${FILE} >> ${ERR_F}
	   /bin/rm /tmp/patches/${i} >> ${ERR_F}
	   /bin/rm /tmp/patches/${i}.* >> ${ERR_F}
	done
	/bin/rm -rf /tmp/patched /tmp/patches >> ${ERR_F}
	restore_chflags
}

case $ACTION in
enable)
	#/sbin/mount_mfs -s 15360 -T qp120at -b 8192 -f 1024 dummy /ftmp \
	#	> /dev/null 2>&1
	;;
auto)
	touch /var/run/firmware.lock
	backup_chflags
	remove_chflags
	/etc/rc.firmware_auto
	restore_chflags
	;;
upgrade)

	touch /var/run/firmware.lock

	# wait 5 seconds before beginning
	sleep 5
	backup_chflags
	remove_chflags

	exec </dev/console >/dev/console 2>/dev/console

	echo
	echo "Firmware upgrade in progress..."  | logger -p daemon.info -i -t Upgrade
	echo "Firmware upgrade in progress..." | wall

	# backup config
	mkdir /tmp/configbak
	cp -p /conf/* /tmp/configbak

	# unmount /cf
	/sbin/umount -f /cf

	# dd image onto card
	if [ -r $IMG ]; then
		/usr/bin/gunzip -S "" -c $IMG | dd of=/dev/r$CFDEVICE bs=16k > /dev/null 2>&1
		echo "Image installed."
	fi

	# mount /cf
	/sbin/mount -w -o noatime /cf

	# restore config
	cp -p /tmp/configbak/* /conf

	restore_chflags

	rm -f /var/run/firmware.lock

        /bin/sync
        sleep 5

	echo "Done."

	# If /tmp/post_upgrade_command exists after update
	# then execute the command.
	if [ -f /tmp/post_upgrade_command ]; then
		sh /tmp/post_upgrade_command
	fi

	# If the archive has unpacked a file called
	# /tmp/no_upgrade_reboot_required then do
	# not reboot after upgrade.
	if [ -f /tmp/no_upgrade_reboot_required ]; then
		rm /tmp/no_upgrade_reboot_required
	else
		rm -f /var/run/config.lock
		sh /etc/rc.reboot
	fi
	;;
pfSenseupgrade)

	touch /var/run/firmware.lock

	# wait 1 seconds before beginning
	sleep 1
	
	# Sanity check - bail early if there's no firmware file!
	if [ ! -r $IMG ]; then
		echo "2nd parameter has not been passed or file does not exist. Exiting." | logger -p daemon.info -i -t Upgrade
		exit
	fi

	backup_chflags
	remove_chflags

	# Do we have a pre-upgrade hook in the update file?
	if [ `tar tvzf $IMG | grep /tmp/pre_upgrade_command | wc -l` -gt 0 ]; then 
		tar xzvf $IMG -C / ./tmp/pre_upgrade_command
		chmod a+rx /tmp/pre_upgrade_command
		sh /tmp/pre_upgrade_command
	fi

	#exec </dev/console >/dev/console 2>/dev/console

	echo "Firmware upgrade in progress..."  | logger -p daemon.info -i -t Upgrade

	# backup config
	/bin/mkdir -p /tmp/configbak
	cp -p /conf/* /tmp/configbak 2>/dev/null
	# mount /cf
	/etc/rc.conf_mount_rw
	/sbin/mount -w -o noatime /cf 2>/dev/null
	/sbin/mount -w -o noatime /   2>/dev/null

	# tar explode image onto hd
	echo "Installing $IMG." | logger -p daemon.info -i -t Upgrade
	cd / && /usr/bin/tar xzUPf $IMG | logger -p daemon.info -i -t Upgrade
	/usr/bin/find / -name CVS -exec rm -fr {} \;
	echo "Image installed $IMG." | logger -p daemon.info -i -t Upgrade

    # process custom image if its passed
    if [ $# -eq 3 ]; then
	    if [ -f $CUSTOMIMG ]; then
	        echo "Custom image $CUSTOMIMG found." | logger -p daemon.info -i -t Upgrade
	        echo "Custom image ($CUSTOMIMG) found."
	        PWD_DIR=`pwd`
	        cd / && /usr/bin/tar xzPUf $CUSTOMIMG | logger -p daemon.info -i -t Upgrade
	        cd $PWD_DIR
	        echo "Custom image $CUSTOMIMG installed." | logger -p daemon.info -i -t Upgrade
	    fi
    fi

	# restore config
	cp -p /tmp/configbak/* /conf 2>/dev/null

	# restore /etc symlinks
	rm /etc/hosts
	ln -s /var/etc/hosts /etc/hosts

	restore_chflags

	# Remove upgrade file
	rm -f $IMG

	if [ -e /etc/init_bootloader.sh ]; then
		sh /etc/init_bootloader.sh
	fi

	# If /tmp/post_upgrade_command exists after update
	# then execute the command.
	if [ -f /tmp/post_upgrade_command ]; then
		sh /tmp/post_upgrade_command
	fi

	# remount /cf ro
	rm -rf /etc/rc.conf
	rm -rf /etc/motd
	find / -name CVS -type d -exec rm {} \;
	rm -rf /usr/savecore/*
	/etc/rc.conf_mount_ro
	/sbin/umount -f /cf 2>/dev/null
	/sbin/mount -r /cf 2>/dev/null
	/sbin/umount -f / 2>/dev/null
	/sbin/mount -r / 2>/dev/null

	sleep 3
	rm -f /var/run/firmware.lock
	/bin/sync
	sleep 2
	echo "Done." | logger -p daemon.info -i -t Upgrade

	# If the archive has unpacked a file called
	# /tmp/no_upgrade_reboot_required then do
	# not reboot after upgrade.
	if [ -f /tmp/no_upgrade_reboot_required ]; then
		rm /tmp/no_upgrade_reboot_required
	else
		rm -f /var/run/config.lock
		sh /etc/rc.reboot
	fi

	;;
delta_update)
	touch /var/run/firmware.lock
	backup_chflags
	remove_chflags
	binary_update $IMG
	restore_chflags
	rm -rf /etc/rc.conf
	rm -rf /etc/motd
	find / -name CVS -type d -exec rm {} \;
	rm -rf /usr/savecore/*
	/etc/rc.conf_mount_ro
	/sbin/umount -f /cf 2>/dev/null
	/sbin/mount -r /cf 2>/dev/null
	/sbin/umount -f / 2>/dev/null
	/sbin/mount -r / 2>/dev/null
	if [ -e /etc/init_bootloader.sh ]; then
		sh /etc/init_bootloader.sh
	fi

	;;
esac