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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI="7"
MODULES_OPTIONAL_USE=modules
MODULES_OPTIONAL_USE_IUSE_DEFAULT=1
inherit linux-info linux-mod multilib toolchain-funcs
DESCRIPTION="iptables extensions not yet accepted in the main kernel"
HOMEPAGE="https://inai.de/projects/xtables-addons/"
SRC_URI="https://inai.de/files/xtables-addons/${P}.tar.xz"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="amd64 x86"
MODULES="quota2 psd pknock lscan length2 ipv4options ipp2p iface gradm geoip fuzzy condition tarpit sysrq logmark ipmark echo dnetmap dhcpmac delude chaos account"
for mod in ${MODULES}; do
IUSE="${IUSE} xtables_addons_${mod}"
done
DEPEND=">=net-firewall/iptables-1.6.0"
RDEPEND="${DEPEND}
xtables_addons_geoip? (
app-arch/unzip
dev-perl/Net-CIDR-Lite
dev-perl/Text-CSV_XS
virtual/perl-Getopt-Long
)
"
DEPEND="${DEPEND}
virtual/linux-sources"
SKIP_MODULES=""
XA_check4internal_module() {
local mod=${1}
local version=${3}
local kconfigname=${3}
if use xtables_addons_${mod} && kernel_is -gt ${version}; then
ewarn "${kconfigname} should be provided by the kernel. Skipping its build..."
if ! linux_chkconfig_present ${kconfigname}; then
ewarn "Please enable ${kconfigname} target in your kernel
configuration or disable checksum module in ${PN}."
fi
# SKIP_MODULES in case we need to disable building of everything
# like having this USE disabled
SKIP_MODULES+=" ${mod}"
fi
}
pkg_setup() {
if use modules; then
get_version
check_modules_supported
CONFIG_CHECK="NF_CONNTRACK NF_CONNTRACK_MARK ~CONNECTOR"
ERROR_CONNECTOR="Please, enable CONFIG_CONNECTOR if you wish to receive userspace notifications from pknock through netlink/connector"
linux-mod_pkg_setup
if ! linux_chkconfig_present IPV6; then
SKIP_IPV6_MODULES="ip6table_rawpost"
ewarn "No IPV6 support in kernel. Disabling: ${SKIP_IPV6_MODULES}"
fi
kernel_is -lt 4 18 && die "${P} requires kernel version >= 4.18"
fi
}
# Helper for maintainer: cheks if all possible MODULES are listed.
XA_qa_check() {
local all_modules
all_modules=$(sed -n '/^build_/{s/build_\(.*\)=.*/\L\1/;G;s/\n/ /;s/ $//;h}; ${x;p}' "${S}/mconfig")
if [[ ${all_modules} != ${MODULES} ]]; then
ewarn "QA: Modules in mconfig differ from \$MODULES in ebuild."
ewarn "Please, update MODULES in ebuild."
ewarn "'${all_modules}'"
fi
}
# Is there any use flag set?
XA_has_something_to_build() {
local mod
for mod in ${MODULES}; do
use xtables_addons_${mod} && return
done
eerror "All modules are disabled. What do you want me to build?"
eerror "Please, set XTABLES_ADDONS to any combination of"
eerror "${MODULES}"
die "All modules are disabled."
}
# Parse Kbuid files and generates list of sources
XA_get_module_name() {
[[ $# != 1 ]] && die "XA_get_sources_for_mod: needs exactly one argument."
local mod objdir build_mod sources_list
mod=${1}
objdir=${S}/extensions
# Take modules name from mconfig
build_mod=$(sed -n "s/\(build_${mod}\)=.*/\1/Ip" "${S}/mconfig")
# strip .o, = and everything before = and print
sources_list=$(sed -n "/^obj-[$][{]${build_mod}[}]/\
{s:obj-[^+]\+ [+]=[[:space:]]*::;s:[.]o::g;p}" \
"${objdir}/Kbuild")
if [[ -d ${S}/extensions/${sources_list} ]]; then
objdir=${S}/extensions/${sources_list}
sources_list=$(sed -n "/^obj-m/\
{s:obj-[^+]\+ [+]=[[:space:]]*::;s:[.]o::g;p}" \
"${objdir}/Kbuild")
fi
for mod_src in ${sources_list}; do
has ${mod_src} ${SKIP_IPV6_MODULES} || \
echo " ${mod_src}(xtables_addons:${S}/extensions:${objdir})"
done
}
# Die on modules known to fail on certain kernel version.
XA_known_failure() {
local module_name=$1
local KV_max=$2
if use xtables_addons_${module_name} && kernel_is ge ${KV_max//./ }; then
eerror
eerror "XTABLES_ADDONS=${module_name} fails to build on linux ${KV_max} or above."
eerror "Either remove XTABLES_ADDONS=${module_name} or use an earlier version of the kernel."
eerror
die
fi
}
src_prepare() {
XA_qa_check
XA_has_something_to_build
# Bug #553630#c2. echo fails on linux-4 and above.
# This appears to be fixed, at least as of linux-4.2
# XA_known_failure "echo" 4
local mod module_name
if use modules; then
MODULE_NAMES="compat_xtables(xtables_addons:${S}/extensions:)"
fi
for mod in ${MODULES}; do
if ! has ${mod} ${SKIP_MODULES} && use xtables_addons_${mod}; then
sed "s/\(build_${mod}=\).*/\1m/I" -i mconfig || die
if use modules; then
for module_name in $(XA_get_module_name ${mod}); do
MODULE_NAMES+=" ${module_name}"
done
fi
else
sed "s/\(build_${mod}=\).*/\1n/I" -i mconfig || die
fi
done
einfo "${MODULE_NAMES}" # for debugging
sed -e 's/depmod -a/true/' -i Makefile.in || die
sed -e '/^all-local:/{s: modules::}' \
-e '/^install-exec-local:/{s: modules_install::}' \
-i extensions/Makefile.in || die
use xtables_addons_geoip || sed -e '/^SUBDIRS/{s/geoip//}' -i Makefile.in
eapply_user
}
src_configure() {
set_arch_to_kernel # .. or it'll look for /arch/amd64/Makefile
econf --prefix="${EPREFIX}/" \
--libexecdir="${EPREFIX}/$(get_libdir)/" \
--with-kbuild="${KV_OUT_DIR}"
}
src_compile() {
emake CFLAGS="${CFLAGS}" CC="$(tc-getCC)" V=1
use modules && BUILD_PARAMS="V=1" BUILD_TARGETS="modules" linux-mod_src_compile
}
src_install() {
emake DESTDIR="${D}" install
use modules && linux-mod_src_install
dodoc -r README doc/*
find "${ED}" -type f -name '*.la' -exec rm -rf '{}' '+'
}
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