#!/bin/bash

UPGRADEVERSION="1.4.8"
PREVIOUSVERSION="1.4.7"
echo "This is the $UPGRADEVERSION update patch for IPCop $PREVIOUSVERSION installing."

CURRENTVERSION=`perl -e "require '/var/ipcop/general-functions.pl';print \\$General::version;"`
if [ "$CURRENTVERSION" != "$PREVIOUSVERSION" ]; then
	echo "You are not running IPCop v$PREVIOUSVERSION for this patch to install."
	echo "Aborting installation."
	exit -1
fi

# general-functions might not be overwrited by patch...
/bin/sed -i -e "s+= '1.4.*$+= '$UPGRADEVERSION';+" /var/ipcop/general-functions.pl

BOOT=`/bin/df | grep "/boot" | /usr/bin/awk '{ print $2 }'`
KVER=`uname -r`

# /boot is too small on flash disk with only 5MB size
# because smp files are bigger, we can't support upgrade from smp kernel with flash on small /boot
if [ "$BOOT" -le 7000 ]; then
	if [ "$KVER" = "2.4.27-smp" -o "$KVER" = "2.4.29-smp" ]; then
		echo "can't support kernel upgrade on smp machine with only 5MB on /boot"
		echo "have 8MB on /boot with flash if you really need to use -smp during upgrade"
		exit 1
	else
		rm -rf 	/boot/{vmlinuz,System.map}-2.4.27-smp	\
			/boot/{vmlinuz,System.map}-2.4.29-smp	\
			/boot/System.map-2.4.29-smp		\
			/boot/System.map-2.4.29-smp		\
			/boot/ipcoprd-smp-2.4.{27,29}.img
	fi
fi
# make files really be erased or new files write may fail with flash on boot with 5MB
/bin/sync

# Install kernel 2.4.31 modules & k dependants files
# kernel modules are necessary to rebuild initrd
/bin/tar -zxpf patch.tar.gz -C /

ROOTDEV=`/bin/ls -l /dev/harddisk4 | /usr/bin/awk '{ print $NF }'`
# for IPCop without a kernel upgrade
if ( ! /bin/grep -q '2.4.27' /boot/grub/grub.conf ); then
	echo "title IPCop old (2.4.27)"						>> /boot/grub/grub.conf
	echo "  root (hd0,0)"							>> /boot/grub/grub.conf
	echo "  kernel /vmlinuz-2.4.27 root=${ROOTDEV} panic=10 acpi=off ro"	>> /boot/grub/grub.conf
	if [ -f /boot/ipcoprd.img ]; then
		echo "  initrd /ipcoprd-2.4.27.img"				>> /boot/grub/grub.conf
	fi
	echo "  savedefault"							>> /boot/grub/grub.conf
fi

# fix grub missing smp menu entries for old kernel on non flash /boot
if [ "$BOOT" -gt 7000 ]; then
	echo "title IPCop old (2.4.27-smp)"					>> /boot/grub/grub.conf
	echo "  root (hd0,0)"							>> /boot/grub/grub.conf
	echo "  kernel /vmlinuz-2.4.27-smp root=${ROOTDEV} panic=10 acpi=off ro">> /boot/grub/grub.conf
	if [ -f /boot/ipcoprd-smp.img ]; then
		echo "  initrd /ipcoprd-smp-2.4.27.img"				>> /boot/grub/grub.conf
	fi
	echo "  savedefault"							>> /boot/grub/grub.conf
fi
echo "title IPCop old (2.4.27 ACPI enabled)"				>> /boot/grub/grub.conf
echo "  root (hd0,0)"							>> /boot/grub/grub.conf
echo "  kernel /vmlinuz-2.4.27 root=${ROOTDEV} panic=10 ro"		>> /boot/grub/grub.conf
if [ -f /boot/ipcoprd.img ]; then
	echo "  initrd /ipcoprd-2.4.27.img"				>> /boot/grub/grub.conf
fi
echo "  savedefault"							>> /boot/grub/grub.conf
# only on non flash /boot
if [ "$BOOT" -gt 7000 ]; then
	echo "title IPCop old (2.4.27-smp ACPI HT enabled)"			>> /boot/grub/grub.conf
	echo "  root (hd0,0)"							>> /boot/grub/grub.conf
	echo "  kernel /vmlinuz-2.4.27-smp root=${ROOTDEV} panic=10 acpi=ht ro"	>> /boot/grub/grub.conf
	if [ -f /boot/ipcoprd.img ]; then
		echo "  initrd /ipcoprd-smp-2.4.27.img"				>> /boot/grub/grub.conf
	fi
	echo "  savedefault"							>> /boot/grub/grub.conf
fi

# Upgrade grub and fix strange looking smp version name
sed -i -e 's/ipcoprd-smp-2.4.27/ipcoprd-2.4.27-smp/' \
	-e 's/2.4.27/2.4.29/' /boot/grub/grub.conf

# Fix initrd
if [ -f /boot/ipcoprd.img ]; then
	# Find out scsi module
	IMAGE=`/usr/bin/mktemp /tmp/ipcoprd.img.XXXXXX`
	MNTPOINT=`/usr/bin/mktemp -d /tmp/ipcoprd.mnt.XXXXXX`
	/bin/gzip -d -c /boot/ipcoprd.img > $IMAGE
	/bin/mount -o loop $IMAGE $MNTPOINT
	SCSIDRIVER=`/bin/ls -1 $MNTPOINT/lib | \
		/bin/grep -v sd_mod.o.gz |\
		/bin/grep -v sg.o.gz |\
		/bin/grep -v sr_mod.o.gz |\
		/bin/grep -v 53c700.o.gz |\
		/bin/grep -v NCR53C9x.o.gz |\
		/bin/grep -v libata.o.gz  |\
		/bin/grep -v scsi_mod.o.gz |\
		/bin/grep -v ataraid.o.gz |\
		/bin/grep -v mptbase.o.gz |\
		/bin/grep -v isa-pnp.o |\
		/bin/grep -v ds.o.gz |\
		/bin/grep -v pcmcia_core.o.gz |\
		/bin/sed 's/.o.gz//'`
	/bin/umount -d $MNTPOINT
	/bin/rm -rf $MNTPOINT $IMAGE	
	/bin/mv -f /boot/ipcoprd.img /boot/ipcoprd-2.4.29.img
	/bin/mv -f /boot/ipcoprd-smp.img /boot/ipcoprd-2.4.29-smp.img
	if [ "$SCSIDRIVER" ]; then
		if [ ! -f ipcoprd-2.4.29-smp.img ]; then
			# on 1.4.3/1.4.4 update, ipcoprd-smp.img has failed, so do it now
			/sbin/mkinitrd --with=scsi_mod --with=${SCSIDRIVER} --with=sd_mod --with=sr_mod --with=libata --with=ataraid /boot/ipcoprd-2.4.29-smp.img 2.4.29-smp
		fi
		/sbin/mkinitrd --with=scsi_mod --with=${SCSIDRIVER} --with=sd_mod --with=sr_mod --with=libata --with=ataraid /boot/ipcoprd.img 2.4.31
		/sbin/mkinitrd --with=scsi_mod --with=${SCSIDRIVER} --with=sd_mod --with=sr_mod --with=libata --with=ataraid /boot/ipcoprd-smp.img 2.4.31-smp
	fi
fi

# fix etc/modules.conf is more recent than ...modules.dep for 2.4.29 and 2.4.31
touch /lib/modules/*/modules.dep

echo "IPCop v$UPGRADEVERSION - The Bad Packets Stop Here">/etc/issue
killall mingetty  #redisplay correct version
echo "end of $UPGRADEVERSION update"
exit 0