# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=5

inherit eutils cmake-utils git-2 linux-info systemd

DESCRIPTION="Encrypted networking for regular people"
HOMEPAGE="https://github.com/cjdelisle/cjdns"
EGIT_REPO_URI="git://github.com/cjdelisle/cjdns.git \
			   https://github.com/cjdelisle/cjdns.git"
EGIT_COMMIT="cf1ca35a835a99ef3998a9f0e609fac337fe6d01"
LICENSE="GPL-3"

SLOT="0"
KEYWORDS="~x86 ~amd64"
IUSE="libsodium +nacl"
REQUIRED_USE="^^ ( nacl libsodium )"

DEPEND="dev-libs/libevent
		 dev-libs/libuv
		 libsodium? ( net-libs/libsodium )
		 nacl? ( net-libs/nacl )"
RDEPEND="" # Static

pkg_setup() {
	linux-info_pkg_setup
	if ! linux_config_exists; then
		eerror "Unable to check your kernel for TUN support"
	else
		CONFIG_CHECK="~TUN"
		ERROR_TUN="Your kernel lacks TUN support."
	fi
}

src_prepare() {
	local required_version="4.6"
	einfo "checking current gcc profile"
	if ! version_is_at_least ${required_version} $(gcc-version) ; then
		eerror "${P} requires gcc-${required_version} or greater to build."
		eerror "Have you gcc-config'ed to the latest version?"
		die "current gcc profile is less than ${required_version}"
	fi

	use nacl && epatch "${FILESDIR}/FindNaCl.cmake-${PV}.diff"
	use libsodium && epatch "${FILESDIR}/Findlibsodium.cmake-${PV}.diff"
	epatch "${FILESDIR}/FindLibuv.cmake-${PV}.diff"
}

src_configure() {
	if gcc-specs-pie ; then
		einfo "Enabling PIE..."
		export NO_PIE=0
	else
		einfo "Disabling PIE..."
		export NO_PIE=1
	fi

	#if use static ; then
	#	export STATIC=1
	#else
	#	export NO_STATIC=1
	#fi

	GIT_VERSION=${EGIT_COMMIT} cmake-utils_src_configure
}

src_test() {
	cd "${BUILD_DIR}"
	emake test
}

src_install() {
	systemd_dounit contrib/systemd/cjdns.service
	newinitd "$FILESDIR/cjdns.runscript" cjdns

	dodoc README.md rfcs/*

	cd "${CMAKE_BUILD_DIR}/admin/angel" || die "could not chdir to admin/angel"
	dolib.a libcjdns-*.a
	mv cjdroute2 cjdroute
	dosbin cjdns cjdroute
}

pkg_postinst() {
	local config_file="cjdroute.conf"
	local config_path="${ROOT}etc/${config_file}"

	if [[ ! -e "${config_path}" ]] ; then
		ebegin "Generating ${config_file}..."
		(umask 077 && cjdroute --genconf > "${T}/${config_file}") || die "cjdroute --genconf failed"
		mv "${T}/${config_file}" "${config_path}"
		eend ${?} || die "Failed to generate and install ${config_file}"
		elog "The keys in ${config_path} have been autogenerated during "
		elog "emerge, they are not defaults and do not need to be overwritten."
	fi
	elog "The OpenRC script will load attempt to load the TUN module if it "
	elog "it is not active, the systemd unit will not. To load TUN at boot "
	elog "'echo tun >> /etc/modules-load.d/cjdns.conf'"
	ewarn "Protect ${config_path}! A lost conf file means you have "
	ewarn "lost your password and connections and anyone who connected "
	ewarn "to you will no longer be able to connect. A *compromised* "
	ewarn "conf file means that other people can impersonate you on "
	ewarn "the network."
	einfo "The cjdns runscript will load the TUN kernel module automatically."
	einfo "If you are using systemd and have TUN built as a module, add tun "
	einfo "to /etc/modules-load.d/ for automatic loading at boot-time."
	einfo "echo tun > /etc/modules-load.d/cjnds.conf"
}