#!/usr/bin/env bash

#   Copyright The containerd 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.

#
# Builds and installs runc to /usr/local/go/bin based off
# the commit defined in vendor.conf
#
set -eu -o pipefail

function install_runc() {
	RUNC_COMMIT=$(grep opencontainers/runc "$GOPATH"/src/github.com/containerd/containerd/vendor.conf | awk '{print $2}')

	go get -d github.com/opencontainers/runc
	cd "$GOPATH"/src/github.com/opencontainers/runc
	git checkout $RUNC_COMMIT
	make BUILDTAGS='apparmor seccomp selinux' runc

	USESUDO=${USESUDO:-false}
	if ${USESUDO}; then
	  SUDO='sudo -E'
	else
	  SUDO=''
	fi
	${SUDO} make install
}

function install_crun() {
	CRUN_VERSION=0.14
	curl -o /usr/local/sbin/runc -L https://github.com/containers/crun/releases/download/${CRUN_VERSION}/crun-${CRUN_VERSION}-static-$(uname -m)
	chmod +x /usr/local/sbin/runc
}

: ${RUNC_FLAVOR:=runc}
case ${RUNC_FLAVOR} in
runc) install_runc ;;
crun) install_crun ;;
*)
	echo >&2 "unknown runc flavor: ${RUNC_FLAVOR}"
	exit 1
	;;
esac