# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI=6

inherit systemd user

NTP_HOME="${NTP_HOME:=/var/lib/openntpd/chroot}"
MY_P="${P/_p/p}"

DESCRIPTION="Lightweight NTP server ported from OpenBSD"
HOMEPAGE="http://www.openntpd.org/"
SRC_URI="mirror://openbsd/OpenNTPD/${MY_P}.tar.gz"

LICENSE="BSD GPL-2"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~x86-fbsd"
IUSE="libressl selinux"

DEPEND="
	!<=net-misc/ntp-4.2.0-r2
	!net-misc/ntp[-openntpd]
	libressl? ( dev-libs/libressl:0= )"

RDEPEND="
	${DEPEND}
	selinux? ( sec-policy/selinux-ntp )"

S="${WORKDIR}/${MY_P}"

pkg_setup() {
	enewgroup ntp
	enewuser ntp -1 -1 "${NTP_HOME}" ntp

	# make sure user has correct HOME as flipping between the standard ntp pkg
	# and this one was possible in the past
	if [[ $(egethome ntp) != ${NTP_HOME} ]]; then
		ewarn "From this version on, the homedir of the ntp user cannot be changed"
		ewarn "dynamically after the installation. For homedir different from"
		ewarn "/var/lib/openntpd/chroot set NTP_HOME in your make.conf and re-emerge."
		esethome ntp "${NTP_HOME}"
	fi
}

src_prepare() {
	default

	# fix /run path
	sed -i 's:/var/run/ntpd:/run/ntpd:g' src/ntpctl.8 src/ntpd.8 || die
	sed -i 's:LOCALSTATEDIR "/run/ntpd:"/run/ntpd:' src/ntpd.h || die

	# fix ntpd.drift path
	sed -i 's:/var/db/ntpd.drift:/var/lib/openntpd/ntpd.drift:g' src/ntpd.8 || die
	sed -i 's:"/db/ntpd.drift":"/openntpd/ntpd.drift":' src/ntpd.h || die

	# fix default config to use gentoo pool
	sed -i 's:servers pool.ntp.org:#servers pool.ntp.org:' ntpd.conf || die
	printf "\n# Choose servers announced from Gentoo NTP Pool\nservers 0.gentoo.pool.ntp.org\nservers 1.gentoo.pool.ntp.org\nservers 2.gentoo.pool.ntp.org\nservers 3.gentoo.pool.ntp.org\n" >> ntpd.conf || die

	# disable constraint config if libressl not enabled
	use libressl || sed -ie 's/^constraints/#constraints/g' ntpd.conf || die
}

src_configure() {
	econf \
		--with-privsep-user=ntp \
		--with-privsep-path=${NTP_HOME} \
		$(use_enable libressl https-constraint)
}

src_install() {
	default

	rm -r "${ED}"/var || die

	newinitd "${FILESDIR}/${PN}.init.d-20080406-r6" ntpd
	newconfd "${FILESDIR}/${PN}.conf.d-20080406-r6" ntpd
	keepdir "${NTP_HOME}"

	systemd_newunit "${FILESDIR}/${PN}.service-20080406-r4" ntpd.service
}

pkg_postinst() {
	# Clean up chroot localtime copy from older versions
	if [[ -d "${EROOT%/}${NTP_HOME}"/etc ]]; then
		if [[ -f "${EROOT%/}${NTP_HOME}"/etc/localtime ]]; then
			rm -v "${EROOT%/}${NTP_HOME}"/etc/localtime || die
		fi

		rmdir "${EROOT%/}${NTP_HOME}"/etc ||
			ewarn "Unable to remove legacy ${EROOT%/}${NTP_HOME}/etc directory"
	fi

	# Fix permissions on home directory
	chown root:root "${EROOT%/}${NTP_HOME}" || die

	[[ -f ${EROOT}var/log/ntpd.log ]] && \
		ewarn "Logfile '${EROOT}var/log/ntpd.log' might be orphaned, please remove it if not in use via syslog."

	if [[ -f ${EROOT}var/lib/ntpd.drift ]]; then
		einfo "Moving ntpd.drift file to new location."
		mv "${EROOT}var/lib/ntpd.drift" "${EROOT}var/lib/openntpd/ntpd.drift" || die
	fi
}