#!/bin/bash
############################################################################
#                                                                          #
# This file is part of the IPFire Firewall.                                #
#                                                                          #
# IPFire 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 3 of the License, or        #
# (at your option) any later version.                                      #
#                                                                          #
# IPFire 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.                             #
#                                                                          #
# You should have received a copy of the GNU General Public License        #
# along with IPFire; if not, write to the Free Software                    #
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA #
#                                                                          #
# Copyright (C) 2023 IPFire-Team <info@ipfire.org>.                        #
#                                                                          #
############################################################################
#
. /opt/pakfire/lib/functions.sh
/usr/local/bin/backupctrl exclude >/dev/null 2>&1

core=181

exit_with_error() {
    # Set last succesfull installed core.
    echo $(($core-1)) > /opt/pakfire/db/core/mine
    # force fsck at next boot, this may fix free space on xfs
    touch /forcefsck
    # don't start pakfire again at error
    killall -KILL pak_update
    /usr/bin/logger -p syslog.emerg -t ipfire \
	"core-update-${core}: $1"
    exit $2
}


# Remove old core updates from pakfire cache to save space...
for (( i=1; i<=$core; i++ )); do
	rm -f /var/cache/pakfire/core-upgrade-*-$i.ipfire
done

# Stop services

KVER="xxxKVERxxx"

# Backup uEnv.txt if exist
if [ -e /boot/uEnv.txt ]; then
    cp -vf /boot/uEnv.txt /boot/uEnv.txt.org
fi

# Do some sanity checks prior to the kernel update
case $(uname -r) in
    *-ipfire*)
	# Ok.
	;;
    *)
	exit_with_error "ERROR cannot update. No IPFire Kernel." 1
	;;
esac

# Check diskspace on root
ROOTSPACE=$( df / -Pk | sed "s| * | |g" | cut -d" " -f4 | tail -n 1 )

if [ $ROOTSPACE -lt 100000 ]; then
    exit_with_error "ERROR cannot update because not enough free space on root." 2
    exit 2
fi

# Remove the old kernel
rm -rvf \
	/boot/System.map-* \
	/boot/config-* \
	/boot/ipfirerd-* \
	/boot/initramfs-* \
	/boot/vmlinuz-* \
	/boot/uImage-* \
	/boot/zImage-* \
	/boot/uInit-* \
	/boot/dtb-* \
	/lib/modules

# Extract files
extract_files

# Remove files
rm -rvf \
	/etc/udev/rules.d/81-cdrom.rules \
	/etc/udev/rules.d/83-cdrom-symlinks.rules \
	/lib/libudev.so.1.6.3 \
	/lib/udev/collect \
	/lib/udev/init-net-rules.sh \
	/lib/udev/rule_generator.functions \
	/lib/udev/write_cd_rules \
	/lib/udev/write_net_rules

# update linker config
ldconfig

# Update Language cache
/usr/local/bin/update-lang-cache

# Filesytem cleanup
/usr/local/bin/filesystem-cleanup

# Start services
telinit u
/etc/init.d/udev restart
/etc/init.d/apache restart

# Rebuild initial ramdisks
dracut --regenerate-all --force
KVER="xxxKVERxxx"
case "$(uname -m)" in
	aarch64)
		mkimage -A arm64 -T ramdisk -C lzma -d /boot/initramfs-${KVER}-ipfire.img /boot/uInit-${KVER}-ipfire
		# dont remove initramfs because grub need this to boot.
		;;
esac

# remove lm_sensor config after collectd was started
# to re-search sensors at next boot with updated kernel
rm -f  /etc/sysconfig/lm_sensors

# Upadate Kernel version in uEnv.txt
if [ -e /boot/uEnv.txt ]; then
    sed -i -e "s/KVER=.*/KVER=${KVER}/g" /boot/uEnv.txt
fi

# Call user update script (needed for some ARM boards)
if [ -e /boot/pakfire-kernel-update ]; then
    /boot/pakfire-kernel-update ${KVER}
fi

## Modify ovpnconfig according to bug 11048 for pass, no-pass modification in ovpnconfig index
# Check if ovpnconfig exists and is not empty
if [ -s /var/ipfire/ovpn/ovpnconfig ]; then
       # Add blank line at top of ovpnconfig otherwise the first roadwarrior entry is treated like a blank line and missed out from update
       awk 'NR==1{print ""}1' /var/ipfire/ovpn/ovpnconfig > /var/ipfire/ovpn/tmp_file && mv /var/ipfire/ovpn/tmp_file /var/ipfire/ovpn/ovpnconfig

       # Make all N2N connections 'no-pass' since they do not use encryption
       awk '{FS=OFS=","} {if($5=="net") {$43="no-pass"; print $0}}' /var/ipfire/ovpn/ovpnconfig >> /var/ipfire/ovpn/ovpnconfig.new

       # Evaluate roadwarrior connection names for *.p12 files
       for y in $(awk -F',' '/host/ { print $3 }' /var/ipfire/ovpn/ovpnconfig); do
           # Sort all unencrypted roadwarriors out and set 'no-pass' in [43] index
               if [[ -n $(openssl pkcs12 -info -in /var/ipfire/ovpn/certs/${y}.p12 -noout -password pass:'' 2>&1 | grep 'Encrypted data') ]]; then
                       awk -v var="$y" '{FS=OFS=","} {if($3==var) {$43="no-pass"; print $0}}' /var/ipfire/ovpn/ovpnconfig >> /var/ipfire/ovpn/ovpnconfig.new
               fi
           # Sort all encrypted roadwarriors out and set 'pass' in [43] index
               if [[ -n $(openssl pkcs12 -info -in /var/ipfire/ovpn/certs/${y}.p12 -noout -password pass:'' 2>&1 | grep 'verify error')  ]]; then
                       awk -v var="$y" '{FS=OFS=","} {if($3==var) {$43="pass"; print $0}}' /var/ipfire/ovpn/ovpnconfig >> /var/ipfire/ovpn/ovpnconfig.new
               fi
       done
fi

# Replace existing ovpnconfig with updated index
mv /var/ipfire/ovpn/ovpnconfig.new /var/ipfire/ovpn/ovpnconfig
# Set correct ownership
chown nobody:nobody /var/ipfire/ovpn/ovpnconfig

# This update needs a reboot...
touch /var/run/need_reboot

# Finish
/etc/init.d/fireinfo start
sendprofile

# Update grub config to display new core version
if [ -e /boot/grub/grub.cfg ]; then
	grub-mkconfig -o /boot/grub/grub.cfg
fi

sync

# Don't report the exitcode last command
exit 0