pre_install() {

	# Script to be run before package is installed / upgraded

	SYSTEMD_CAT="$(which systemd-cat 2>/dev/null || true)"
	print_error() {
		errorstr="ESET Endpoint Antivirus error: $1"
		echo "$errorstr" 1>&2
		if [ -n "$SYSTEMD_CAT" ]; then
			printf "%s" "$errorstr" | $SYSTEMD_CAT -t "eea" -p err
		fi
	}

	# Check for UTF-8 support
	if ! localectl list-locales | grep -i "UTF-8\|UTF8" 1>/dev/null ; then
		print_error 'UTF-8 support is not installed in the system. Please install a UTF-8 locale first. Aborting installation.'
		exit 1
	fi

	# Check noexec flag for /var/opt /tmp and MODMAPDIR
	if findmnt -n --target /var/opt | grep "noexec" 1>/dev/null && \
		findmnt -n --target /tmp | grep "noexec" 1>/dev/null ; then
		if [ -z "$MODMAPDIR" ] ; then
			print_error '"/var/opt" and "/tmp" are both mounted as NOEXEC. Please disable NOEXEC flag for one of them or set variable MODMAPIDR according to documentation.'
			exit 1
		elif findmnt -n --target "$MODMAPDIR" | grep "noexec" 1>/dev/null ; then
			print_error '"/var/opt", "/tmp" and directory specified in MODMAPDIR are all mounted as NOEXEC. Please disable NOEXEC flag for one of them or set variable MODMAPIDR according to documentation.'
			exit 1
		fi
	fi

	# Check for previous product
	if [ -d "/opt/eset/esets/" ] || [ -f "/opt/eset/efs/etc/pkgid" ] || [ -f "/etc/opt/eset/esets/info/pkgid" ] || [ -f "/etc/opt/eset/esets/esets.cfg" ]; then
		print_error 'Previous ESET Security product must be uninstalled first, package won'\''t be installed.'
		exit 1
	fi

}

pre_upgrade() {

	# Script to be run before package is installed / upgraded

	SYSTEMD_CAT="$(which systemd-cat 2>/dev/null || true)"
	print_error() {
		errorstr="ESET Endpoint Antivirus error: $1"
		echo "$errorstr" 1>&2
		if [ -n "$SYSTEMD_CAT" ]; then
			printf "%s" "$errorstr" | $SYSTEMD_CAT -t "eea" -p err
		fi
	}

	# Check for UTF-8 support
	if ! localectl list-locales | grep -i "UTF-8\|UTF8" 1>/dev/null ; then
		print_error 'UTF-8 support is not installed in the system. Please install a UTF-8 locale first. Aborting installation.'
		exit 1
	fi

	# Check noexec flag for /var/opt /tmp and MODMAPDIR
	if findmnt -n --target /var/opt | grep "noexec" 1>/dev/null && \
		findmnt -n --target /tmp | grep "noexec" 1>/dev/null ; then
		if [ -z "$MODMAPDIR" ] ; then
			print_error '"/var/opt" and "/tmp" are both mounted as NOEXEC. Please disable NOEXEC flag for one of them or set variable MODMAPIDR according to documentation.'
			exit 1
		elif findmnt -n --target "$MODMAPDIR" | grep "noexec" 1>/dev/null ; then
			print_error '"/var/opt", "/tmp" and directory specified in MODMAPDIR are all mounted as NOEXEC. Please disable NOEXEC flag for one of them or set variable MODMAPIDR according to documentation.'
			exit 1
		fi
	fi

	# Check for previous product
	if [ -d "/opt/eset/esets/" ] || [ -f "/opt/eset/efs/etc/pkgid" ] || [ -f "/etc/opt/eset/esets/info/pkgid" ] || [ -f "/etc/opt/eset/esets/esets.cfg" ]; then
		print_error 'Previous ESET Security product must be uninstalled first, package won'\''t be installed.'
		exit 1
	fi

	#################################### Upgrade ####################################
	if true; then
		# stop and unregister old product
		'/opt/eset/eea/lib/install_scripts/unregister_service.sh'

		# export configuration from old product to xml
		# this path must be into old product
		if [ -f '/var/opt/eset/eea/confd/settings.json' ]; then
			confd_ug='eset-eea-confd:eset-eea-daemons'
			sudo -u ${confd_ug%:*} -- '/opt/eset/eea/lib/cfg-upgrade' --export-xml '/var/opt/eset/eea/confd/exported.xml'
		fi

		# convert product license file name to newer format
		if [ -f /var/opt/eset/eea/licensed/license.lf ]; then
			mv /var/opt/eset/eea/licensed/license.lf /var/opt/eset/eea/licensed/license_113.lf
		fi
		if [ -f /var/opt/eset/eea/licensed/license_cfg.json ]; then
			mv /var/opt/eset/eea/licensed/license_cfg.json /var/opt/eset/eea/licensed/license_cfg_113.json
		fi

		# remove potential upgrade package already prepared in product, as we are upgrading first
		# because /var/opt/eset is left intact during upgrade, prepared upgrade
		# package can be present there, which would cause "pcu update when product starts" during this
		# upgrade
		rm -f '/var/opt/eset/eea/updated/app/eea.bin'
	fi
}

post_install() {

	# Script to be run after package is installed

	SYSTEMD_CAT="$(which systemd-cat 2>/dev/null || true)"
	print_error() {
		errorstr="ESET Endpoint Antivirus error: $1"
		echo "$errorstr" 1>&2
		if [ -n "$SYSTEMD_CAT" ]; then
			printf "%s" "$errorstr" | $SYSTEMD_CAT -t "eea" -p err
		fi
	}

	# import config engine configuration from old product
	import_configuration() {
		# import only if we have exported xml from old product
		if [ -f '/var/opt/eset/eea/confd/exported.xml' ]; then
			# we don't want to leave old settings.json, all information is
			# in exported xml
			rm -f '/var/opt/eset/eea/confd/settings.json'
			confd_ug='eset-eea-confd:eset-eea-daemons'
			sudo -u ${confd_ug%:*} -- '/opt/eset/eea/lib/cfg-upgrade' --import-xml '/var/opt/eset/eea/confd/exported.xml'
			rm -f '/var/opt/eset/eea/confd/exported.xml'
		fi
	}


	if true || false; then
		# first install and upgrade (deb only)
		# yum: run for "1" (install) and "2" (upgrade)
		# check if users have been already created

		# create users and groups
		for g in eset-eea-daemons; do
			groupadd -r -f $g
		done

		for ug in eset-eea-confd:eset-eea-daemons eset-eea-updated:eset-eea-daemons eset-eea-scand:eset-eea-daemons eset-eea-logd:eset-eea-daemons eset-eea-licensed:eset-eea-daemons eset-eea-econnd:eset-eea-daemons; do
			if ! id "${ug%:*}" > /dev/null 2>&1; then
				useradd -d '/opt/eset/eea' -M -N -r -s /sbin/nologin -g "${ug#*:}" "${ug%:*}"
			fi
		done
	fi

	#################################### Upgrade & Install ####################################
	# change directory permissions
	chgrp -R 'eset-eea-daemons' '/var/opt/eset/eea'
	chmod -R 775 '/var/opt/eset/eea'

	logd_ug='eset-eea-logd:eset-eea-daemons'
	chown -R ${logd_ug%:*} '/var/log/eset/eea'
	chmod -R 700 '/var/log/eset/eea'
	mkdir -p '/var/opt/eset/eea/cache/data/Logs'
	mkdir -p '/var/opt/eset/eea/cache/data/Diagnostics'

	chgrp -R 'eset-eea-daemons' '/var/opt/eset/eea/cache' '/var/opt/eset/eea/cache/data' '/var/opt/eset/eea/modules_notice' '/var/opt/eset/eea/dumps'
	for dir in /var/opt/eset/eea/cache /var/opt/eset/eea/cache/data; do
		chmod -R 770 "$dir"
		chmod 1770 "$dir"
	done
	chmod 1770 '/var/opt/eset/eea/cache/data/Logs'

	scand_ug='eset-eea-scand:eset-eea-daemons'
	chown -R ${scand_ug%:*} /var/opt/eset/eea/cache

	# extract modules from tar
	tar -xf /var/opt/eset/eea/lib/modules_eea.tar -C /var/opt/eset/eea/lib
	# compile modules
	/opt/eset/eea/bin/upd --compile-nups
	upd_return_code=$?
	if [ $upd_return_code -ne 0 ] && [ $upd_return_code -ne 10 ]; then
		print_error 'Module compilation failed.'
	fi

	# set correct user to compiled modules
	updated_ug='eset-eea-updated:eset-eea-daemons'
	chown -R ${updated_ug} /var/opt/eset/eea/lib

	if false; then
		# rpm upgrade only
		import_configuration
	fi

	if true; then
		# deb upgrade only
		import_configuration
	fi

	# register and start service
	'/opt/eset/eea/lib/install_scripts/register_service.sh'

	# add current eula info into CE path AcceptedEulas
	# esmc may have already modified this by policy, in that case it is locked, so
	# ignore error here and leave esmc to manage this setting
	'/opt/eset/eea/lib/cfg' --eula-tag "EULA-BUS-STANDARD" --eula-version "2020.1" > /dev/null || true
}

post_upgrade() {

	# Script to be run after package is installed

	SYSTEMD_CAT="$(which systemd-cat 2>/dev/null || true)"
	print_error() {
		errorstr="ESET Endpoint Antivirus error: $1"
		echo "$errorstr" 1>&2
		if [ -n "$SYSTEMD_CAT" ]; then
			printf "%s" "$errorstr" | $SYSTEMD_CAT -t "eea" -p err
		fi
	}

	# import config engine configuration from old product
	import_configuration() {
		# import only if we have exported xml from old product
		if [ -f '/var/opt/eset/eea/confd/exported.xml' ]; then
			# we don't want to leave old settings.json, all information is
			# in exported xml
			rm -f '/var/opt/eset/eea/confd/settings.json'
			confd_ug='eset-eea-confd:eset-eea-daemons'
			sudo -u ${confd_ug%:*} -- '/opt/eset/eea/lib/cfg-upgrade' --import-xml '/var/opt/eset/eea/confd/exported.xml'
			rm -f '/var/opt/eset/eea/confd/exported.xml'
		fi
	}


	if true || false; then
		# first install and upgrade (deb only)
		# yum: run for "1" (install) and "2" (upgrade)
		# check if users have been already created

		# create users and groups
		for g in eset-eea-daemons; do
			groupadd -r -f $g
		done

		for ug in eset-eea-confd:eset-eea-daemons eset-eea-updated:eset-eea-daemons eset-eea-scand:eset-eea-daemons eset-eea-logd:eset-eea-daemons eset-eea-licensed:eset-eea-daemons eset-eea-econnd:eset-eea-daemons; do
			if ! id "${ug%:*}" > /dev/null 2>&1; then
				useradd -d '/opt/eset/eea' -M -N -r -s /sbin/nologin -g "${ug#*:}" "${ug%:*}"
			fi
		done
	fi

	#################################### Upgrade & Install ####################################
	# change directory permissions
	chgrp -R 'eset-eea-daemons' '/var/opt/eset/eea'
	chmod -R 775 '/var/opt/eset/eea'

	logd_ug='eset-eea-logd:eset-eea-daemons'
	chown -R ${logd_ug%:*} '/var/log/eset/eea'
	chmod -R 700 '/var/log/eset/eea'
	mkdir -p '/var/opt/eset/eea/cache/data/Logs'
	mkdir -p '/var/opt/eset/eea/cache/data/Diagnostics'

	chgrp -R 'eset-eea-daemons' '/var/opt/eset/eea/cache' '/var/opt/eset/eea/cache/data' '/var/opt/eset/eea/modules_notice' '/var/opt/eset/eea/dumps'
	for dir in /var/opt/eset/eea/cache /var/opt/eset/eea/cache/data; do
		chmod -R 770 "$dir"
		chmod 1770 "$dir"
	done
	chmod 1770 '/var/opt/eset/eea/cache/data/Logs'

	scand_ug='eset-eea-scand:eset-eea-daemons'
	chown -R ${scand_ug%:*} /var/opt/eset/eea/cache

	# extract modules from tar
	tar -xf /var/opt/eset/eea/lib/modules_eea.tar -C /var/opt/eset/eea/lib
	# compile modules
	/opt/eset/eea/bin/upd --compile-nups
	upd_return_code=$?
	if [ $upd_return_code -ne 0 ] && [ $upd_return_code -ne 10 ]; then
		print_error 'Module compilation failed.'
	fi

	# set correct user to compiled modules
	updated_ug='eset-eea-updated:eset-eea-daemons'
	chown -R ${updated_ug} /var/opt/eset/eea/lib

	if false; then
		# rpm upgrade only
		import_configuration
	fi

	if true; then
		# deb upgrade only
		import_configuration
	fi

	# register and start service
	'/opt/eset/eea/lib/install_scripts/register_service.sh'

	# add current eula info into CE path AcceptedEulas
	# esmc may have already modified this by policy, in that case it is locked, so
	# ignore error here and leave esmc to manage this setting
	'/opt/eset/eea/lib/cfg' --eula-tag "EULA-BUS-STANDARD" --eula-version "2020.1" > /dev/null || true
}

pre_remove() {

	# Script to be run before package is uninstalled

	SYSTEMD_CAT="$(which systemd-cat 2>/dev/null || true)"
	print_error() {
		errorstr="ESET Endpoint Antivirus error: $1"
		echo "$errorstr" 1>&2
		if [ -n "$SYSTEMD_CAT" ]; then
			printf "%s" "$errorstr" | $SYSTEMD_CAT -t "eea" -p err
		fi
	}

	if false; then
		# upgrade exits here
		exit
	fi

	#################################### Uninstall ####################################
	# dissociate product
	if ! /opt/eset/eea/sbin/lic -d >/dev/null 2>/dev/null; then
		print_error 'License was not dissociated. Please use ESET License Administrator to dissociate license manually.'
	fi

	# stop product, unregister from systemd/init.d
	/opt/eset/eea/lib/install_scripts/unregister_service.sh

	# clean notice dir
	rm -rf /var/opt/eset/eea/modules_notice/*

	# remove devctld file with udev rules
	rm /etc/udev/rules.d/00-eset.eea.rules 2>/dev/null || true

	### NOTE: All directories created by ApplicationBase::CreateAppDir() must be explicitly deleted bellow.

	# remove licensed folder
	rm -rf /var/opt/eset/eea/licensed

	# remove confd folder
	rm -rf /var/opt/eset/eea/confd
}

post_remove() {

	# Script to be run after package is uninstalled

	if false; then
		# only on debian package, we don't have any configuration file
		exit
	fi

	if false; then
		# upgrade exits here
		exit
	fi

	#################################### Uninstall ####################################
	# remove users and groups
	for ug in eset-eea-confd:eset-eea-daemons eset-eea-updated:eset-eea-daemons eset-eea-scand:eset-eea-daemons eset-eea-logd:eset-eea-daemons eset-eea-licensed:eset-eea-daemons eset-eea-econnd:eset-eea-daemons; do
		usr=${ug%:*}
		userdel $usr 2>/dev/null || true
	done

	for g in eset-eea-daemons; do
		groupdel $g 2>/dev/null || true
	done

	# clean files generated on runtime
	# there may be other our product(s) installed
	rm -rf /var/log/eset/eea
	rmdir /var/log/eset 2>/dev/null || true

	rm -rf /var/run/eset/eea
	rmdir /var/run/eset 2>/dev/null || true

	rm -rf /var/opt/eset/eea
	rmdir /var/opt/eset 2>/dev/null || true
}