# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI="2"

inherit eutils linux-info toolchain-funcs

DESCRIPTION="Open Source implementation of IPsec for the Linux operating system (was SuperFreeS/WAN)."
HOMEPAGE="http://www.openswan.org/"
SRC_URI="http://www.openswan.org/download/${P}.tar.gz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="caps curl extra-algorithms ms-bad-proposal nss openssl"


COMMON_DEPEND="!net-misc/strongswan
	dev-libs/gmp
	dev-lang/perl
	caps? ( sys-libs/libcap-ng )
	curl? ( net-misc/curl )
	ldap? ( net-nds/openldap )
	nss? ( dev-libs/nss )
	openssl? ( dev-libs/openssl )"
DEPEND="${COMMON_DEPEND}
	virtual/linux-sources
	app-text/xmlto
	app-text/docbook-xml-dtd:4.1.2" # see bug 237132
RDEPEND="${COMMON_DEPEND}
	virtual/logger
	sys-apps/iproute2"

# Note: xauth is enabled unconditionally, since openswan won't build without it



pkg_setup() {
	linux-info_pkg_setup
	kernel_is 2 6 || die "Only 2.6 kernels are supported by this ebuild."

	einfo "This ebuild will set ${P} to use 2.6 native IPsec (KAME)."
	einfo "KLIPS will not be compiled/installed."
}


src_prepare() {
	epatch "${FILESDIR}/${P}"-gentoo.patch
	epatch "${FILESDIR}/${P}"-sandbox.patch
	use ms-bad-proposal && epatch "${FILESDIR}"/${PN}-${PV%.*}-allow-ms-bad-proposal.patch

	# https://bugs.xelerance.com/issues/1112
	epatch "${FILESDIR}/${P}"-KLIPS-PFKEY-prototypes.patch

	find . -type f -regex '.*[.]\([1-8]\|html\|xml\)' -exec sed -i \
		-e s:/usr/local:/usr:g '{}' \; || die "failed to replace text in docs"

	# Note: prehaps there is a better way to handle these
	if use nss; then
		find . -type f -name 'Makefile*' -exec sed -i \
			-e s:/usr/include/nss3:/usr/include/nss:g '{}' \; &&\
		find . -type f -name 'Makefile*' -exec sed -i \
			-e 's:-lnss3:-L/usr/lib/nss -lnss3:' '{}' \; &&\
		find . -type f -name 'Makefile*' -exec sed -i \
			-e s:/usr/include/nspr4:/usr/include/nspr:g '{}' \; ||\
		die "failed to adjust nss/nspr paths"
	fi

	# Note: this sed is to fix error bail-out on xmlto failures to generate manpages
	#  a better way would be to fix either xmlto or xml files themselves and remove this line
	sed -i -e 's:mv $$m $@:mv $$m $@ || true:' programs/Makefile.manpages || die
}


get_make_options() {
	echo KERNELSRC=\"${KERNEL_DIR}\"\
		FINALEXAMPLECONFDIR=/usr/share/doc/${PF}\
		INC_RCDEFAULT=/etc/init.d\
		INC_USRLOCAL=/usr\
		INC_MANDIR=share/man\
		FINALDOCDIR=/usr/share/doc/${PF}/html\
		DESTDIR=\"${D}\"\
		USERCOMPILE=\"${CFLAGS}\"\
		CC=\"$(tc-getCC)\"\
		USE_KEYRR=false\
		USE_KLIPS=false\
		USE_MAST=false\
		USE_SAREF_KERNEL=false\
		USE_NETKEY=true\
		USE_BSDKAME=false\
		USE_NM=false\
		USE_LWRES=false\
		USE_FIPSCHECK=false\
		USE_XAUTH=true\
		USE_XAUTHPAM=true

	use caps\
		&& echo USE_LIBCAP_NG=true\
		|| echo USE_LIBCAP_NG=false

	use curl\
		&& echo USE_LIBCURL=true HAVE_THREADS=true\
		|| echo USE_LIBCURL=false

	use extra-algorithms\
		&& echo USE_EXTRACRYPTO=true\
		|| echo USE_EXTRACRYPTO=false

	use ldap\
		&& echo USE_LDAP=true\
		|| echo USE_LDAP=false

	use nss\
		&& echo USE_LIBNSS=true\
		|| echo USE_LIBNSS=false

	use openssl\
		&& echo HAVE_OPENSSL=true\
		|| echo HAVE_OPENSSL=false
}


src_compile() {
	eval set -- $(get_make_options)
	emake "$@" programs || die "emake failed"
}


src_install() {
	eval set -- $(get_make_options)
	emake "$@" install || die "emake install failed"

	dodoc docs/{KNOWN_BUGS*,RELEASE-NOTES*,PATENTS*,debugging*}
	dohtml doc/*.html
	docinto quickstarts
	dodoc doc/quickstarts/*

	newinitd "${FILESDIR}"/ipsec.init ipsec || die "failed to install init script"

	keepdir /var/run/pluto
	keepdir /etc/ipsec.d/{{ca,aa,ocsp,}certs,crls,private}
}


pkg_preinst() {
	if has_version "<net-misc/openswan-2.6.14" && pushd "${ROOT}etc/ipsec"; then
		ewarn "Following files and directories were moved from '${ROOT}etc/ipsec' to '${ROOT}etc':"
		local i err=0
		if [ -h "../ipsec.d" ]; then
			rm "../ipsec.d" || die "failed to remove ../ipsec.d symlink"
		fi
		for i in *; do
			if [ -e "../$i" ]; then
				eerror "  $i NOT MOVED, ../$i already exists!"
				err=1
			elif [ -d "$i" ]; then
				mv "$i" .. || die "failed to move $i directory"
				ewarn "  directory $i"
			elif [ -f "$i" ]; then
				sed -i -e 's:/etc/ipsec/:/etc/:g' "$i" && \
					mv "$i" .. && ewarn "  file $i" || \
					die "failed to move $i file"
			else
				eerror "  $i NOT MOVED, it is not a file nor a directory!"
				err=1
			fi
		done
		popd
		if [ $err -eq 0 ]; then
			rmdir "${ROOT}etc/ipsec" || eerror "Failed to remove ${ROOT}etc/ipsec"
		else
			ewarn "${ROOT}etc/ipsec is not empty, you will have to remove it yourself"
		fi
	fi
}


pkg_postinst() {
	CONFIG_CHECK="~NET_KEY ~INET_XFRM_MODE_TRANSPORT ~INET_XFRM_MODE_TUNNEL ~INET_AH ~INET_ESP ~INET_IPCOMP"
	WARNING_INET_AH="CONFIG_INET_AH:\tmissing IPsec AH support (needed if you want authentication)"
	WARNING_INET_ESP="CONFIG_INET_ESP:\tmissing IPsec ESP support (needed if you want authentication and encryption)"
	WARNING_INET_IPCOMP="CONFIG_INET_IPCOMP:\tmissing IPsec Payload Compression (required for compress=yes)"
	check_extra_config
}