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# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
inherit systemd toolchain-funcs autotools flag-o-matic usr-ldscript
DESCRIPTION="Linux kernel (2.4+) firewall, NAT and packet mangling tools"
HOMEPAGE="https://www.netfilter.org/projects/iptables/"
SRC_URI="https://www.netfilter.org/projects/iptables/files/${P}.tar.bz2"
LICENSE="GPL-2"
# Subslot reflects PV when libxtables and/or libip*tc was changed
# the last time.
SLOT="0/1.8.3"
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
IUSE="conntrack ipv6 netlink nftables pcap static-libs"
BUILD_DEPEND="
>=app-eselect/eselect-iptables-20200508
"
COMMON_DEPEND="
conntrack? ( >=net-libs/libnetfilter_conntrack-1.0.6 )
netlink? ( net-libs/libnfnetlink )
nftables? (
>=net-libs/libmnl-1.0:0=
>=net-libs/libnftnl-1.1.6:0=
)
pcap? ( net-libs/libpcap )
"
DEPEND="${COMMON_DEPEND}
virtual/os-headers
>=sys-kernel/linux-headers-4.4:0
"
BDEPEND="${BUILD_DEPEND}
app-eselect/eselect-iptables
virtual/pkgconfig
nftables? (
sys-devel/flex
virtual/yacc
)
"
RDEPEND="${COMMON_DEPEND}
${BUILD_DEPEND}
nftables? ( net-misc/ethertypes )
!<net-firewall/ebtables-2.0.11-r1
!<net-firewall/arptables-0.0.5-r1
"
PATCHES=(
"${FILESDIR}/iptables-1.8.4-no-symlinks.patch"
"${FILESDIR}/iptables-1.8.2-link.patch"
# https://bugs.gentoo.org/831626
"${FILESDIR}/iptables-1.8.7-cache-double-free.patch"
)
src_prepare() {
# use the saner headers from the kernel
rm include/linux/{kernel,types}.h || die
default
eautoreconf
}
src_configure() {
# Some libs use $(AR) rather than libtool to build #444282
tc-export AR
# Hack around struct mismatches between userland & kernel for some ABIs. #472388
use amd64 && [[ ${ABI} == "x32" ]] && append-flags -fpack-struct
sed -i \
-e "/nfnetlink=[01]/s:=[01]:=$(usex netlink 1 0):" \
-e "/nfconntrack=[01]/s:=[01]:=$(usex conntrack 1 0):" \
configure || die
local myeconfargs=(
--sbindir="${EPREFIX}/sbin"
--libexecdir="${EPREFIX}/$(get_libdir)"
--enable-devel
--enable-shared
$(use_enable nftables)
$(use_enable pcap bpf-compiler)
$(use_enable pcap nfsynproxy)
$(use_enable static-libs static)
$(use_enable ipv6)
)
econf "${myeconfargs[@]}"
}
src_compile() {
emake V=1
}
src_install() {
default
dodoc INCOMPATIBILITIES iptables/iptables.xslt
# all the iptables binaries are in /sbin, so might as well
# put these small files in with them
into /
dosbin iptables/iptables-apply
dosym iptables-apply /sbin/ip6tables-apply
doman iptables/iptables-apply.8
insinto /usr/include
doins include/iptables.h $(use ipv6 && echo include/ip6tables.h)
insinto /usr/include/iptables
doins include/iptables/internal.h
keepdir /var/lib/iptables
newinitd "${FILESDIR}"/${PN}-r2.init iptables
newconfd "${FILESDIR}"/${PN}-r1.confd iptables
if use ipv6 ; then
keepdir /var/lib/ip6tables
dosym iptables /etc/init.d/ip6tables
newconfd "${FILESDIR}"/ip6tables-r1.confd ip6tables
fi
if use nftables; then
# Bug 647458
rm "${ED}"/etc/ethertypes || die
# Bugs 660886 and 669894
rm "${ED}"/sbin/{arptables,ebtables}{,-{save,restore}} || die
fi
systemd_dounit "${FILESDIR}"/systemd/iptables-{re,}store.service
if use ipv6 ; then
systemd_dounit "${FILESDIR}"/systemd/ip6tables-{re,}store.service
fi
# Move important libs to /lib #332175
gen_usr_ldscript -a ip{4,6}tc xtables
find "${ED}" -type f -name "*.la" -delete || die
}
pkg_postinst() {
local default_iptables="xtables-legacy-multi"
if ! eselect iptables show &>/dev/null; then
elog "Current iptables implementation is unset, setting to ${default_iptables}"
eselect iptables set "${default_iptables}"
fi
if use nftables; then
local tables
for tables in {arp,eb}tables; do
if ! eselect ${tables} show &>/dev/null; then
elog "Current ${tables} implementation is unset, setting to ${default_iptables}"
eselect ${tables} set xtables-nft-multi
fi
done
fi
eselect iptables show
}
pkg_prerm() {
if [[ -z ${REPLACED_BY_VERSION} ]]; then
elog "Unsetting iptables symlinks before removal"
eselect iptables unset
fi
if ! has_version 'net-firewall/ebtables'; then
elog "Unsetting ebtables symlinks before removal"
eselect ebtables unset
elif [[ -z ${REPLACED_BY_VERSION} ]]; then
elog "Resetting ebtables symlinks to ebtables-legacy"
eselect ebtables set ebtables-legacy
fi
if ! has_version 'net-firewall/arptables'; then
elog "Unsetting arptables symlinks before removal"
eselect arptables unset
elif [[ -z ${REPLACED_BY_VERSION} ]]; then
elog "Resetting arptables symlinks to arptables-legacy"
eselect arptables set arptables-legacy
fi
# the eselect module failing should not be fatal
return 0
}
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