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# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
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 ~loong ~m68k ~mips ppc ~ppc64 ~riscv ~s390 sparc x86"
IUSE="conntrack netlink nftables pcap static-libs"
COMMON_DEPEND="
conntrack? ( >=net-libs/libnetfilter_conntrack-1.0.6 )
netlink? ( net-libs/libnfnetlink )
nftables? (
>=net-libs/libmnl-1.0:=
>=net-libs/libnftnl-1.1.6:=
)
pcap? ( net-libs/libpcap )
"
DEPEND="
${COMMON_DEPEND}
virtual/os-headers
>=sys-kernel/linux-headers-4.4:0
"
BDEPEND="
virtual/pkgconfig
nftables? (
sys-devel/flex
virtual/yacc
)
"
RDEPEND="
${COMMON_DEPEND}
nftables? ( net-misc/ethertypes )
!<net-firewall/ebtables-2.0.11-r1
!<net-firewall/arptables-0.0.5-r1
"
IDEPEND=">=app-eselect/eselect-iptables-20220320"
PATCHES=(
"${FILESDIR}/iptables-1.8.4-no-symlinks.patch"
"${FILESDIR}/iptables-1.8.2-link.patch"
"${FILESDIR}/${P}-format-security.patch"
"${FILESDIR}/${P}-uint-musl.patch"
"${FILESDIR}/${P}-musl-headers.patch"
"${FILESDIR}/${P}-out-of-tree-build.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, bug #444282
tc-export AR
# Hack around struct mismatches between userland & kernel for some ABIs
# bug #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-ipv6
--enable-shared
$(use_enable nftables)
$(use_enable pcap bpf-compiler)
$(use_enable pcap nfsynproxy)
$(use_enable static-libs static)
)
econf "${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/ip{,6}tables.h
insinto /usr/include/iptables
doins include/iptables/internal.h
keepdir /var/lib/ip{,6}tables
newinitd "${FILESDIR}"/${PN}-r3.init iptables
newconfd "${FILESDIR}"/${PN}-r1.confd iptables
dosym iptables /etc/init.d/ip6tables
newconfd "${FILESDIR}"/ip6tables-r1.confd ip6tables
if use nftables; then
# Bug #647458
rm "${ED}"/etc/ethertypes || die
# Bugs #660886 and #669894
rm "${ED}"/sbin/{arptables,ebtables}{,-{save,restore}} || die
fi
systemd_dounit "${FILESDIR}"/systemd/ip{,6}tables-{re,}store.service
# Move important libs to /lib, bug #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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