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# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DISTUTILS_OPTIONAL=1
PYTHON_COMPAT=( python3_{9..11} )
VERIFY_SIG_OPENPGP_KEY_PATH="${BROOT}"/usr/share/openpgp-keys/netfilter.org.asc
inherit edo linux-info distutils-r1 systemd verify-sig
DESCRIPTION="Linux kernel (3.13+) firewall, NAT and packet mangling tools"
HOMEPAGE="https://netfilter.org/projects/nftables/"
if [[ ${PV} =~ ^[9]{4,}$ ]]; then
inherit autotools git-r3
EGIT_REPO_URI="https://git.netfilter.org/${PN}"
BDEPEND="
sys-devel/bison
sys-devel/flex
"
else
SRC_URI="https://netfilter.org/projects/nftables/files/${P}.tar.xz
verify-sig? ( https://netfilter.org/projects/nftables/files/${P}.tar.xz.sig )"
KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
BDEPEND+="verify-sig? ( sec-keys/openpgp-keys-netfilter )"
fi
# See COPYING: new code is GPL-2+, existing code is GPL-2
LICENSE="GPL-2 GPL-2+"
SLOT="0/1"
IUSE="debug doc +gmp json libedit +modern-kernel python +readline static-libs test xtables"
RESTRICT="!test? ( test )"
RDEPEND="
>=net-libs/libmnl-1.0.4:=
>=net-libs/libnftnl-1.2.4:=
gmp? ( dev-libs/gmp:= )
json? ( dev-libs/jansson:= )
python? ( ${PYTHON_DEPS} )
readline? ( sys-libs/readline:= )
xtables? ( >=net-firewall/iptables-1.6.1:= )
"
DEPEND="${RDEPEND}"
BDEPEND+="
virtual/pkgconfig
doc? (
app-text/asciidoc
>=app-text/docbook2X-0.8.8-r4
)
python? ( ${PYTHON_DEPS} )
"
REQUIRED_USE="
python? ( ${PYTHON_REQUIRED_USE} )
libedit? ( !readline )
"
pkg_setup() {
if kernel_is ge 3 13; then
if use modern-kernel && kernel_is lt 3 18; then
eerror "The modern-kernel USE flag requires kernel version 3.18 or newer to work properly."
fi
CONFIG_CHECK="~NF_TABLES"
linux-info_pkg_setup
else
eerror "This package requires kernel version 3.13 or newer to work properly."
fi
}
src_prepare() {
default
if [[ ${PV} =~ ^[9]{4,}$ ]] ; then
eautoreconf
fi
if use python; then
pushd py >/dev/null || die
distutils-r1_src_prepare
popd >/dev/null || die
fi
}
src_configure() {
local myeconfargs=(
# We handle python separately
--disable-python
--disable-static
--sbindir="${EPREFIX}"/sbin
$(use_enable debug)
$(use_enable doc man-doc)
$(use_with !gmp mini_gmp)
$(use_with json)
$(use_with libedit cli editline)
$(use_with readline cli readline)
$(use_enable static-libs static)
$(use_with xtables)
)
econf "${myeconfargs[@]}"
if use python; then
pushd py >/dev/null || die
distutils-r1_src_configure
popd >/dev/null || die
fi
}
src_compile() {
default
if use python; then
pushd py >/dev/null || die
distutils-r1_src_compile
popd >/dev/null || die
fi
}
src_test() {
emake check
if [[ ${EUID} == 0 ]]; then
edo tests/shell/run-tests.sh -v
else
ewarn "Skipping shell tests (requires root)"
fi
# Need to rig up Python eclass if using this, but it doesn't seem to work
# for me anyway.
#cd tests/py || die
#"${EPYTHON}" nft-test.py || die
}
src_install() {
default
if ! use doc && [[ ! ${PV} =~ ^[9]{4,}$ ]]; then
pushd doc >/dev/null || die
doman *.?
popd >/dev/null || die
fi
# Do it here instead of in src_prepare to avoid eautoreconf
# rmdir lets us catch if more files end up installed in /etc/nftables
dodir /usr/share/doc/${PF}/skels/
mv "${ED}"/etc/nftables/osf "${ED}"/usr/share/doc/${PF}/skels/osf || die
rmdir "${ED}"/etc/nftables || die
local mksuffix="$(usex modern-kernel '-mk' '')"
exeinto /usr/libexec/${PN}
newexe "${FILESDIR}"/libexec/${PN}${mksuffix}.sh ${PN}.sh
newconfd "${FILESDIR}"/${PN}${mksuffix}.confd ${PN}
newinitd "${FILESDIR}"/${PN}${mksuffix}.init-r1 ${PN}
keepdir /var/lib/nftables
systemd_dounit "${FILESDIR}"/systemd/${PN}-restore.service
if use python ; then
pushd py >/dev/null || die
distutils-r1_src_install
popd >/dev/null || die
fi
find "${ED}" -type f -name "*.la" -delete || die
}
pkg_preinst() {
local stderr
# There's a history of regressions with nftables upgrades. Add a safety
# check to help us spot them earlier.
if [[ -d /sys/module/nf_tables ]] && [[ -x /sbin/nft ]] && [[ -z ${ROOT} ]]; then
# Check the current loaded ruleset, if any, using the newly
# built instance of nft(8).
if ! stderr=$(umask 177; /sbin/nft -t list ruleset 2>&1 >"${T}"/ruleset.nft); then
# Report errors induced by trying to list the ruleset
# but don't treat them as being fatal.
printf '%s\n' "${stderr}" >&2
elif [[ ${stderr} == *"is managed by iptables-nft"* ]]; then
# Rulesets generated by iptables-nft are special in
# nature and will not always be printed in a way that
# constitutes a valid syntax for ntf(8). Ignore them.
return
elif ! "${ED}"/sbin/nft -c -f "${T}"/ruleset.nft; then
eerror "Your currently loaded ruleset cannot be parsed by the newly built instance of"
eerror "nft. This probably means that there is a regression introduced by v${PV}."
eerror "(To make the ebuild fail instead of warning, set NFTABLES_ABORT_ON_RELOAD_FAILURE=1.)"
if [[ -n ${NFTABLES_ABORT_ON_RELOAD_FAILURE} ]] ; then
die "Aborting because of failed nft reload!"
fi
fi
fi
}
pkg_postinst() {
local save_file
save_file="${EROOT}"/var/lib/nftables/rules-save
# In order for the nftables-restore systemd service to start
# the save_file must exist.
if [[ ! -f "${save_file}" ]]; then
( umask 177; touch "${save_file}" )
elif [[ $(( "$( stat --printf '%05a' "${save_file}" )" & 07177 )) -ne 0 ]]; then
ewarn "Your system has dangerous permissions for ${save_file}"
ewarn "It is probably affected by bug #691326."
ewarn "You may need to fix the permissions of the file. To do so,"
ewarn "you can run the command in the line below as root."
ewarn " 'chmod 600 \"${save_file}\"'"
fi
if has_version 'sys-apps/systemd'; then
elog "If you wish to enable the firewall rules on boot (on systemd) you"
elog "will need to enable the nftables-restore service."
elog " 'systemctl enable ${PN}-restore.service'"
elog
elog "If you are creating firewall rules before the next system restart"
elog "the nftables-restore service must be manually started in order to"
elog "save those rules on shutdown."
fi
if has_version 'sys-apps/openrc'; then
elog "If you wish to enable the firewall rules on boot (on openrc) you"
elog "will need to enable the nftables service."
elog " 'rc-update add ${PN} default'"
elog
elog "If you are creating or updating the firewall rules and wish to save"
elog "them to be loaded on the next restart, use the \"save\" functionality"
elog "in the init script."
elog " 'rc-service ${PN} save'"
fi
}
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