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# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

inherit multiprocessing systemd tmpfiles

MY_PV="${PV/_p/-P}"
MY_PV="${MY_PV/_rc/rc}"
MY_P="${PN}-${MY_PV}"

RRL_PV="${MY_PV}"

DESCRIPTION="Berkeley Internet Name Domain - Name Server"
HOMEPAGE="https://www.isc.org/software/bind"
SRC_URI="https://downloads.isc.org/isc/bind9/${PV}/${P}.tar.xz"
S="${WORKDIR}/${MY_P}"

LICENSE="MPL-2.0"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux"
IUSE="+caps dnsrps dnstap doc doh fixed-rrset idn jemalloc geoip gssapi lmdb selinux static-libs test xml"
RESTRICT="!test? ( test )"

DEPEND="
	acct-group/named
	acct-user/named
	dev-libs/json-c:=
	>=dev-libs/libuv-1.37.0:=
	sys-libs/zlib
	dev-libs/openssl:=[-bindist(-)]
	caps? ( >=sys-libs/libcap-2.1.0 )
	dnstap? (
		dev-libs/fstrm
		dev-libs/protobuf-c
	)
	doh? ( net-libs/nghttp2:= )
	geoip? ( dev-libs/libmaxminddb )
	gssapi? ( virtual/krb5 )
	idn? ( net-dns/libidn2 )
	jemalloc? ( dev-libs/jemalloc:= )
	lmdb? ( dev-db/lmdb )
	xml? ( dev-libs/libxml2 )
"
RDEPEND="
	${DEPEND}
	selinux? ( sec-policy/selinux-bind )
	sys-process/psmisc
	!<net-dns/bind-tools-9.18.0
"
# sphinx required for man-page and html creation
BDEPEND="
	virtual/pkgconfig
	doc? ( dev-python/sphinx )
	test? (
		dev-util/cmocka
		dev-util/kyua
	)
"

src_configure() {
	local myeconfargs=(
		--prefix="${EPREFIX}"/usr
		--sysconfdir=/etc/bind
		--localstatedir=/var
		--enable-full-report
		--without-readline
		--with-openssl="${ESYSROOT}"/usr
		--with-json-c
		--with-zlib
		$(use_enable caps linux-caps)
		$(use_enable dnsrps)
		$(use_enable dnstap)
		$(use_enable doh)
		$(use_with doh libnghttp2)
		$(use_enable fixed-rrset)
		$(use_enable static-libs static)
		$(use_enable geoip)
		$(use_with geoip maxminddb)
		$(use_with gssapi)
		$(use_with idn libidn2)
		$(use_with jemalloc)
		$(use_with lmdb)
		$(use_with xml libxml2)
	)

	econf "${myeconfargs[@]}"
}

src_test() {
	# system tests ('emake test') require network configuration for IPs etc
	# so we run the unit tests instead.
	TEST_PARALLEL_JOBS="$(makeopts_jobs)" emake unit
}

src_install() {
	default

	dodoc CHANGES README.md

	if use doc; then
		docinto misc
		dodoc -r doc/misc/

		docinto html
		dodoc -r doc/arm/

		docinto dnssec-guide
		dodoc -r doc/dnssec-guide/

		docinto contrib
		dodoc contrib/scripts/nanny.pl
	fi

	insinto /etc/bind
	newins "${FILESDIR}"/named.conf-r9 named.conf.auth

	newinitd "${FILESDIR}"/named.init-r15 named
	newconfd "${FILESDIR}"/named.confd-r8 named

	newenvd "${FILESDIR}"/10bind.env 10bind

	if ! use static-libs ; then
		find "${ED}"/usr/lib* -name '*.la' -delete || die
	fi

	dosym -r /var/bind/pri /etc/bind/pri
	dosym -r /var/bind/sec /etc/bind/sec
	dosym -r /var/bind/dyn /etc/bind/dyn
	keepdir /var/bind/{pri,sec,dyn} /var/log/named

	fowners root:named /{etc,var}/bind /var/log/named /var/bind/{sec,pri,dyn}
	fowners root:named /etc/bind/{bind.keys,named.conf.auth}
	fperms 0640 /etc/bind/{bind.keys,named.conf.auth}
	fperms 0750 /etc/bind /var/bind/pri
	fperms 0770 /var/log/named /var/bind/{,sec,dyn}

	systemd_newunit "${FILESDIR}/named.service-r1" named.service
	dotmpfiles "${FILESDIR}"/named.conf
	exeinto /usr/libexec
	doexe "${FILESDIR}/generate-rndc-key.sh"
}

pkg_postinst() {
	tmpfiles_process named.conf

	if [[ ! -f '/etc/bind/rndc.key' && ! -f '/etc/bind/rndc.conf' ]]; then
		einfo "Generating rndc.key"
		/usr/sbin/rndc-confgen -a
		chown root:named /etc/bind/rndc.key || die
		chmod 0640 /etc/bind/rndc.key || die
	fi

	einfo
	einfo "You can edit /etc/conf.d/named to customize named settings"
	einfo

	einfo "If you'd like to run bind in a chroot AND this is a new"
	einfo "install OR your bind doesn't already run in a chroot:"
	einfo "1) Uncomment and set the CHROOT variable in /etc/conf.d/named."
	einfo "2) Run \`emerge --config '=${CATEGORY}/${PF}'\`"
	einfo

	CHROOT=$(source /etc/conf.d/named 2>/dev/null; echo ${CHROOT})
	if [[ -n ${CHROOT} ]]; then
		elog "NOTE: As of net-dns/bind-9.4.3_p5-r1 the chroot part of the init-script got some major changes!"
		elog "To enable the old behaviour (without using mount) uncomment the"
		elog "CHROOT_NOMOUNT option in your /etc/conf.d/named config."
		elog "If you decide to use the new/default method, ensure to make backup"
		elog "first and merge your existing configs/zones to /etc/bind and"
		elog "/var/bind because bind will now mount the needed directories into"
		elog "the chroot dir."
	fi
}

pkg_config() {
	CHROOT=$(source /etc/conf.d/named; echo ${CHROOT})
	CHROOT_NOMOUNT=$(source /etc/conf.d/named; echo ${CHROOT_NOMOUNT})
	CHROOT_GEOIP=$(source /etc/conf.d/named; echo ${CHROOT_GEOIP})

	if [[ -z "${CHROOT}" ]]; then
		eerror "This config script is designed to automate setting up"
		eerror "a chrooted bind/named. To do so, please first uncomment"
		eerror "and set the CHROOT variable in '/etc/conf.d/named'."
		die "Unset CHROOT"
	fi

	if [[ -d "${CHROOT}" ]]; then
		ewarn "NOTE: As of net-dns/bind-9.4.3_p5-r1 the chroot part of the init-script got some major changes!"
		ewarn "To enable the old behaviour (without using mount) uncomment the"
		ewarn "CHROOT_NOMOUNT option in your /etc/conf.d/named config."
		ewarn
		ewarn "${CHROOT} already exists... some things might become overridden"
		ewarn "press CTRL+C if you don't want to continue"
		sleep 10
	fi

	echo; einfo "Setting up the chroot directory..."

	mkdir -m 0750 -p ${CHROOT} || die
	mkdir -m 0755 -p ${CHROOT}/{dev,etc,var/log,run} || die
	mkdir -m 0750 -p ${CHROOT}/etc/bind || die
	mkdir -m 0770 -p ${CHROOT}/var/{bind,log/named} ${CHROOT}/run/named/ || die

	chown root:named \
		${CHROOT} \
		${CHROOT}/var/{bind,log/named} \
		${CHROOT}/run/named/ \
		${CHROOT}/etc/bind \
		|| die

	mknod ${CHROOT}/dev/null c 1 3 || die
	chmod 0666 ${CHROOT}/dev/null || die

	mknod ${CHROOT}/dev/zero c 1 5 || die
	chmod 0666 ${CHROOT}/dev/zero || die

	if [[ "${CHROOT_NOMOUNT:-0}" -ne 0 ]]; then
		cp -a /etc/bind ${CHROOT}/etc/ || die
		cp -a /var/bind ${CHROOT}/var/ || die
	fi

	if [[ "${CHROOT_GEOIP:-0}" -eq 1 ]]; then
		if use geoip; then
			mkdir -m 0755 -p ${CHROOT}/usr/share/GeoIP || die
		elif use geoip2; then
			mkdir -m 0755 -p ${CHROOT}/usr/share/GeoIP2 || die
		fi
	fi

	elog "You may need to add the following line to your syslog-ng.conf:"
	elog "source jail { unix-stream(\"${CHROOT}/dev/log\"); };"
}