# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/net-firewall/ipsec-tools/ipsec-tools-0.8.0-r3.ebuild,v 1.11 2012/09/16 17:57:53 blueness Exp $

EAPI="4"

inherit eutils flag-o-matic autotools linux-info pam

DESCRIPTION="A port of KAME's IPsec utilities to the Linux-2.6 IPsec implementation"
HOMEPAGE="http://ipsec-tools.sourceforge.net/"
SRC_URI="mirror://sourceforge/${PN}/${P}.tar.bz2"

LICENSE="BSD GPL-2"
SLOT="0"
KEYWORDS="amd64 arm ~mips ppc ppc64 x86"
IUSE="hybrid idea ipv6 kerberos ldap nat pam rc5 readline selinux stats"

RDEPEND="
	dev-libs/openssl
	kerberos? ( virtual/krb5 )
	ldap? ( net-nds/openldap )
	pam? ( sys-libs/pam )
	readline? ( sys-libs/readline )
	selinux? (
		sys-libs/libselinux
		sec-policy/selinux-ipsec
	)"

DEPEND="${RDEPEND}
	>=sys-kernel/linux-headers-2.6.30"

pkg_setup() {
	linux-info_pkg_setup

	get_version

	if linux_config_exists && kernel_is -ge 2 6 19; then
		ewarn
		ewarn "\033[1;33m**************************************************\033[00m"
		ewarn
		ewarn "Checking kernel configuration in /usr/src/linux or"
		ewarn "or /proc/config.gz for compatibility with ${PN}."
		ewarn "Here are the potential problems:"
		ewarn

		local nothing="1"

		# Check options for all flavors of IPSec
		local msg=""
		for i in XFRM_USER NET_KEY; do
			if ! linux_chkconfig_present ${i}; then
				msg="${msg} ${i}"
			fi
		done
		if [[ ! -z "$msg" ]]; then
			nothing="0"
			ewarn
			ewarn "ALL IPSec may fail. CHECK:"
			ewarn "${msg}"
		fi

		# Check unencrypted IPSec
		if ! linux_chkconfig_present CRYPTO_NULL; then
			nothing="0"
			ewarn
			ewarn "Unencrypted IPSec may fail. CHECK:"
			ewarn " CRYPTO_NULL"
		fi

		# Check IPv4 IPSec
		msg=""
		for i in \
			INET_IPCOMP INET_AH INET_ESP \
			INET_XFRM_MODE_TRANSPORT \
			INET_XFRM_MODE_TUNNEL \
			INET_XFRM_MODE_BEET
		do
			if ! linux_chkconfig_present ${i}; then
				msg="${msg} ${i}"
			fi
		done
		if [[ ! -z "$msg" ]]; then
			nothing="0"
			ewarn
			ewarn "IPv4 IPSec may fail. CHECK:"
			ewarn "${msg}"
		fi

		# Check IPv6 IPSec
		if use ipv6; then
			msg=""
			for i in INET6_IPCOMP INET6_AH INET6_ESP \
				INET6_XFRM_MODE_TRANSPORT \
				INET6_XFRM_MODE_TUNNEL \
				INET6_XFRM_MODE_BEET
			do
				if ! linux_chkconfig_present ${i}; then
					msg="${msg} ${i}"
				fi
			done
			if [[ ! -z "$msg" ]]; then
			nothing="0"
				ewarn
				ewarn "IPv6 IPSec may fail. CHECK:"
				ewarn "${msg}"
			fi
		fi

		# Check IPSec behind NAT
		if use nat; then
			if ! linux_chkconfig_present NETFILTER_XT_MATCH_POLICY; then
				nothing="0"
				ewarn
				ewarn "IPSec behind NAT may fail.  CHECK:"
				ewarn " NETFILTER_XT_MATCH_POLICY"
			fi
		fi

		if [[ $nothing == "1" ]]; then
			ewarn "NO PROBLEMS FOUND"
		fi

		ewarn
		ewarn "WARNING: If your *configured* and *running* kernel"
		ewarn "differ either now or in the future, then these checks"
		ewarn "may lead to misleading results."
		ewarn
		ewarn "\033[1;33m**************************************************\033[00m"
		ewarn
	else
		eerror
		eerror "\033[1;31m**************************************************\033[00m"
		eerror "Make sure that your *running* kernel is/will be >=2.6.19."
		eerror "Building ${PN} now, assuming that you know what you're doing."
		eerror "\033[1;31m**************************************************\033[00m"
		eerror
	fi
}

src_prepare() {
	# fix for bug #124813
	sed -i 's:-Werror::g' "${S}"/configure.ac || die
	# fix for building with gcc-4.6
	sed -i 's: -R: -Wl,-R:' "${S}"/configure.ac || die

	epatch "${FILESDIR}/${PN}-def-psk.patch"
	epatch "${FILESDIR}/${PN}-include-vendoridh.patch"

	AT_M4DIR="${S}" eautoreconf
	epunt_cxx
}

src_configure() {
	#--with-{iconv,libradius} lead to "Broken getaddrinfo()"
	#--enable-samode-unspec is not supported in linux
	local myconf
	myconf="--with-kernel-headers=/usr/include \
			--enable-adminport \
			--enable-dependency-tracking \
			--enable-dpd \
			--enable-frag \
			--without-libiconv \
			--without-libradius \
			--disable-samode-unspec \
			$(use_enable idea) \
			$(use_enable ipv6) \
			$(use_enable kerberos gssapi) \
			$(use_with ldap libldap) \
			$(use_enable nat natt) \
			$(use_with pam libpam) \
			$(use_enable rc5) \
			$(use_with readline) \
			$(use_enable selinux security-context) \
			$(use_enable stats)"

	use nat && myconf="${myconf} --enable-natt-versions=yes"

	# enable mode-cfg and xauth support
	if use pam; then
		myconf="${myconf} --enable-hybrid"
	else
		myconf="${myconf} $(use_enable hybrid)"
	fi

	econf ${myconf}
}

src_install() {
	emake DESTDIR="${D}" install
	keepdir /var/lib/racoon
	newconfd "${FILESDIR}"/racoon.conf.d racoon
	newinitd "${FILESDIR}"/racoon.init.d racoon
	use pam && newpamd "${FILESDIR}"/racoon.pam.d racoon

	insinto /etc
	doins "${FILESDIR}"/ipsec.conf
	insinto /etc/racoon
	doins "${FILESDIR}"/racoon.conf
	doins "${FILESDIR}"/psk.txt
	chmod 400 "${D}"/etc/racoon/psk.txt

	dodoc ChangeLog README NEWS
	dodoc -r src/racoon/samples
	dodoc -r src/racoon/doc
	docinto samples
	newdoc src/setkey/sample.cf ipsec.conf
}

pkg_postinst() {
	if use nat; then
		elog
		elog "You have enabled the nat traversal functionnality."
		elog "Nat versions wich are enabled by default are 00,02,rfc"
		elog "you can find those drafts in the CVS repository:"
		elog "cvs -d anoncvs@anoncvs.netbsd.org:/cvsroot co ipsec-tools"
		elog
		elog "If you feel brave enough and you know what you are"
		elog "doing, you can consider emerging this ebuild with"
		elog "EXTRA_ECONF=\"--enable-natt-versions=08,07,06\""
		elog
	fi

	if use ldap; then
		elog
		elog "You have enabled ldap support with {$PN}."
		elog "The man page does NOT contain any information on it yet."
		elog "Consider using a more recent version or CVS."
		elog
	fi

	elog
	elog "Please have a look in /usr/share/doc/${P} and visit"
	elog "http://www.netbsd.org/Documentation/network/ipsec/"
	elog "to find more information on how to configure this tool."
	elog
}