# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/net-misc/openvpn/openvpn-2.1_rc4.ebuild,v 1.1 2007/04/26 13:48:48 uberlord Exp $

inherit eutils multilib

DESCRIPTION="OpenVPN is a robust and highly flexible tunneling application compatible with many OSes."
SRC_URI="http://openvpn.net/release/openvpn-${PV}.tar.gz"
HOMEPAGE="http://openvpn.net/"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~hppa ~ppc ~ppc-macos ~ppc64 ~sh ~sparc ~sparc-fbsd ~x86 ~x86-fbsd"
IUSE="examples iproute2 minimal pam passwordsave selinux ssl static threads userland_BSD ipv6"

DEPEND=">=dev-libs/lzo-1.07
	kernel_linux? (
		iproute2? ( sys-apps/iproute2 ) !iproute2? ( sys-apps/net-tools )
	)
	!minimal? ( pam? ( virtual/pam ) )
	selinux? ( sec-policy/selinux-openvpn )
	ssl? ( >=dev-libs/openssl-0.9.6 )"

pkg_setup() {
	if use iproute2 ; then
		if built_with_use sys-apps/iproute2 minimal ; then
			eerror "iproute2 support requires that sys-apps/iproute2 was not"
			eerror "built with the minimal USE flag"
			die "iproute2 support not available"
		fi
	fi
}

src_unpack() {
	unpack ${A}
	cd "${S}"

	epatch "${FILESDIR}/${PN}"-2.0.4-darwin.patch
	use ipv6 && epatch "${FILESDIR}/${PN}"-2.1-udp6.patch	
}

src_compile() {
	local myconf=""
	# We cannot use use_enable with iproute2 as the Makefile stupidly
	# enables it with --disable-iproute2
	use iproute2 && myconf="${myconf} --enable-iproute2"
	if use minimal ; then
		myconf="${myconf} --disable-plugins"
		myconf="${myconf} --disable-pkcs11"
	fi

	econf ${myconf} \
		$(use_enable passwordsave password-save) \
		$(use_enable ssl) \
		$(use_enable ssl crypto) \
		$(use_enable threads pthread) \
		|| die "configure failed"

	use static && sed -i -e '/^LIBS/s/LIBS = /LIBS = -static /' Makefile

	emake || die "make failed"

	if ! use minimal ; then
		cd plugin
		for i in $( ls 2>/dev/null ); do
			[[ ${i} == "README" || ${i} == "examples" ]] && continue
			[[ ${i} == "auth-pam" ]] && ! use pam && continue
			einfo "Building ${i} plugin"
			cd "${i}"
			emake || die "make failed"
			cd ..
		done
		cd ..
	fi
}

src_install() {
	make DESTDIR="${D}" install || die "make install failed"

	# install documentation
	dodoc AUTHORS ChangeLog PORTS README

	# Empty dir
	dodir /etc/openvpn
	keepdir /etc/openvpn

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

	# Install the init script
	newinitd "${FILESDIR}/openvpn-2.1.init" openvpn

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

	# Install plugins and easy-rsa
	if ! use minimal ; then
		cd easy-rsa/2.0
		make install "DESTDIR=${D}/usr/share/${PN}/easy-rsa"
		cd ../..

		exeinto "/usr/$(get_libdir)/${PN}"
		doexe plugin/*/*.so
	fi
}

pkg_postinst() {
	# Add openvpn user so openvpn servers can drop privs
	# Clients should run as root so they can change ip addresses,
	# dns information and other such things.
	enewgroup openvpn
	enewuser openvpn "" "" "" openvpn

	if [[ -n $(ls /etc/openvpn/*/local.conf 2>/dev/null) ]] ; then
		ewarn "WARNING: The openvpn init script has changed"
		ewarn ""
	fi

	einfo "The openvpn init script expects to find the configuration file"
	einfo "openvpn.conf in /etc/openvpn along with any extra files it may need."
	einfo ""
	einfo "To create more VPNs, simply create a new .conf file for it and"
	einfo "then create a symlink to the openvpn init script from a link called"
	einfo "openvpn.newconfname - like so"
	einfo "   cd /etc/openvpn"
	einfo "   ${EDITOR##*/} foo.conf"
	einfo "   cd /etc/init.d"
	einfo "   ln -s openvpn openvpn.foo"
	einfo ""
	einfo "You can then treat openvpn.foo as any other service, so you can"
	einfo "stop one vpn and start another if you need to."

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

	if use userland_BSD ; then
		ewarn ""
		ewarn "If you run any kind of firewall on BSD and use IPv6 acrosss"
		ewarn "OpenVPN then you'll probably have to lower the MTU to 1420"
		ewarn "using the tun-mtu statement (even for tap devices)"
	fi
}