#
# Copyright (C) 2022 The Falco Authors.
#
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
set -e

mod_version="@DRIVER_VERSION@"
dkms add -m falco -v $mod_version --rpm_safe_upgrade
if [ `uname -r | grep -c "BOOT"` -eq 0 ] && [ -e /lib/modules/`uname -r`/build/include ]; then
	dkms build -m falco -v $mod_version
	dkms install --force -m falco -v $mod_version
elif [ `uname -r | grep -c "BOOT"` -gt 0 ]; then
	echo -e ""
	echo -e "Module build for the currently running kernel was skipped since you"
	echo -e "are running a BOOT variant of the kernel."
else
	echo -e ""
	echo -e "Module build for the currently running kernel was skipped since the"
	echo -e "kernel source for this kernel does not seem to be installed."
fi

# validate rpm macros by `rpm -qp --scripts <rpm>`
# RPM scriptlets: https://docs.fedoraproject.org/en-US/packaging-guidelines/Scriptlets/#_systemd
#                 https://docs.fedoraproject.org/en-US/packaging-guidelines/Scriptlets/#_syntax

# systemd_post macro expands to
# if postinst:
#   `systemd-update-helper install-system-units <service>`
%systemd_post 'falco.service'

# post install mirrored from .deb
if [ $1 -eq 1 ]; then
        # This will only remove masks created on package removal.
        /usr/bin/systemctl --system unmask 'falco.service' >/dev/null || true

        # enable falco on installation
        # note: DEB postinstall script checks for changed symlinks
        /usr/bin/systemctl --system enable 'falco.service' >/dev/null || true

        # start falco on installation
        /usr/bin/systemctl --system start 'falco.service' >/dev/null || true
fi

# post upgrade mirrored from .deb
if [ $1 -gt 1 ]; then
    if [ -d /run/systemd/system ]; then
        /usr/bin/systemctl --system daemon-reload >/dev/null || true

        # restart falco on upgrade if service is already running
        /usr/bin/systemctl --system condrestart 'falco.service' >/dev/null || true
    fi
fi