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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit autotools flag-o-matic systemd linux-info git-r3

DESCRIPTION="Robust and highly flexible tunneling application compatible with many OSes"
EGIT_REPO_URI="https://github.com/OpenVPN/${PN}.git"
EGIT_SUBMODULES=(-cmocka)
HOMEPAGE="https://openvpn.net/"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS=""

IUSE="down-root examples inotify iproute2 +lz4 +lzo mbedtls pam"
IUSE+=" pkcs11 +plugins selinux +ssl systemd test userland_BSD"

RESTRICT="!test? ( test )"
REQUIRED_USE="pkcs11? ( ssl )
	!plugins? ( !pam !down-root )
	inotify? ( plugins )
"

CDEPEND="
	kernel_linux? (
		iproute2? ( sys-apps/iproute2[-minimal] )
		!iproute2? ( >=sys-apps/net-tools-1.60_p20160215155418 )
	)
	pam? ( sys-libs/pam )
	ssl? (
		!mbedtls? ( >=dev-libs/openssl-0.9.8:0= )
		mbedtls? ( net-libs/mbedtls:= )
	)
	lz4? ( app-arch/lz4 )
	lzo? ( >=dev-libs/lzo-1.07 )
	pkcs11? ( >=dev-libs/pkcs11-helper-1.11 )
	systemd? ( sys-apps/systemd )
"
DEPEND="${CDEPEND}
	test? ( dev-util/cmocka )
"
RDEPEND="${CDEPEND}
	acct-group/openvpn
	acct-user/openvpn
	selinux? ( sec-policy/selinux-openvpn )
"

CONFIG_CHECK="~TUN"

pkg_setup() {
	linux-info_pkg_setup
}

src_prepare() {
	default
	eautoreconf
}

src_configure() {
	SYSTEMD_UNIT_DIR=$(systemd_get_systemunitdir) \
	TMPFILES_DIR="/usr/lib/tmpfiles.d" \
	econf \
		--with-plugindir="${EPREFIX}/usr/$(get_libdir)/${PN}" \
		$(use_enable inotify async-push) \
		$(use_enable ssl crypto) \
		$(use_with ssl crypto-library $(usex mbedtls mbedtls openssl)) \
		$(use_enable lz4) \
		$(use_enable lzo) \
		$(use_enable pkcs11) \
		$(use_enable plugins) \
		$(use_enable iproute2) \
		$(use_enable pam plugin-auth-pam) \
		$(use_enable down-root plugin-down-root) \
		$(use_enable systemd)
}

src_test() {
	make check || die "top-level tests failed"
	pushd tests/unit_tests > /dev/null || die
	make check || die "unit tests failed"
	popd > /dev/null || die
}

src_install() {
	default

	find "${ED}/usr" -name '*.la' -delete || die

	# install documentation
	dodoc AUTHORS ChangeLog PORTS README README.IPv6

	# Install some helper scripts
	keepdir /etc/openvpn
	exeinto /etc/openvpn
	doexe "${FILESDIR}/up.sh"
	doexe "${FILESDIR}/down.sh"

	# Install the init script and config file
	newinitd "${FILESDIR}/${PN}-2.1.init" openvpn
	newconfd "${FILESDIR}/${PN}-2.1.conf" openvpn

	# install examples, controlled by the respective useflag
	if use examples ; then
		# dodoc does not supportly support directory traversal, #15193
		docinto /usr/share/doc/${PF}/examples
		dodoc -r sample contrib
	fi
}

pkg_postinst() {
	if use x64-macos; then
		elog "You might want to install tuntaposx for TAP interface support:"
		elog "http://tuntaposx.sourceforge.net"
	fi

	if systemd_is_booted ||  has_version sys-apps/systemd; then
		elog "In order to use OpenVPN with systemd please use the correct systemd service file."
		elog  ""
		elog "server:"
		elog ""
		elog "- Place your server configuration file in /etc/openvpn/server"
		elog "- Use the openvpn-server@.service like so"
		elog "systemctl start openvpn-server@{Server-config}"
		elog ""
		elog "client:"
		elog ""
		elog "- Place your client configuration file in /etc/openvpn/client"
		elog "- Use the openvpn-client@.service like so:"
		elog "systemctl start openvpn-client@{Client-config}"
	else
		elog "The openvpn init script expects to find the configuration file"
		elog "openvpn.conf in /etc/openvpn along with any extra files it may need."
		elog ""
		elog "To create more VPNs, simply create a new .conf file for it and"
		elog "then create a symlink to the openvpn init script from a link called"
		elog "openvpn.newconfname - like so"
		elog "	 cd /etc/openvpn"
		elog "	 ${EDITOR##*/} foo.conf"
		elog "	 cd /etc/init.d"
		elog "	 ln -s openvpn openvpn.foo"
		elog ""
		elog "You can then treat openvpn.foo as any other service, so you can"
		elog "stop one vpn and start another if you need to."
	fi

	if grep -Eq "^[ \t]*(up|down)[ \t].*" "${ROOT}/etc/openvpn"/*.conf 2>/dev/null ; then
		ewarn ""
		ewarn "WARNING: If you use the remote keyword then you are deemed to be"
		ewarn "a client by our init script and as such we force up,down scripts."
		ewarn "These scripts call /etc/openvpn/\$SVCNAME-{up,down}.sh where you"
		ewarn "can move your scripts to."
	fi

	if use plugins ; then
		einfo ""
		einfo "plugins have been installed into /usr/$(get_libdir)/${PN}/plugins"
	fi

	ewarn ""
	ewarn "You are using a live ebuild building from the sources of openvpn"
	ewarn "repository from http://openvpn.git.sourceforge.net. For reporting"
	ewarn "bugs please contact: openvpn-devel@lists.sourceforge.net."
}