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# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

EAPI="5"

inherit user versionator toolchain-funcs flag-o-matic systemd linux-info

MY_P="${PN}-${PV/_beta/-dev}"

DESCRIPTION="A TCP/HTTP reverse proxy for high availability environments"
HOMEPAGE="http://haproxy.1wt.eu"
SRC_URI="http://haproxy.1wt.eu/download/$(get_version_component_range 1-2)/src/${MY_P}.tar.gz"

LICENSE="GPL-2 LGPL-2.1"
SLOT="0"
KEYWORDS="~amd64 ~arm ~ppc ~x86"
IUSE="+crypt doc examples net_ns +pcre pcre-jit ssl tools vim-syntax +zlib" # lua

DEPEND="pcre? ( dev-libs/libpcre
		pcre-jit? ( dev-libs/libpcre[jit] )
	)
	ssl? ( dev-libs/openssl:0[zlib?] )
	zlib? ( sys-libs/zlib )"
# lua? ( dev-lang/lua:5.3 )
RDEPEND="${DEPEND}"

S="${WORKDIR}/${MY_P}"

pkg_setup() {
	enewgroup haproxy
	enewuser haproxy -1 -1 -1 haproxy

	if use net_ns; then
		CONFIG_CHECK="~NET_NS"
		linux-info_pkg_setup
	fi
}

src_prepare() {
	sed -e 's:@SBINDIR@:'/usr/bin':' contrib/systemd/haproxy.service.in \
		> contrib/systemd/haproxy.service || die

	sed -ie 's:/usr/sbin/haproxy:/usr/bin/haproxy:' src/haproxy-systemd-wrapper.c || die
}

src_compile() {
	local args="TARGET=linux2628 USE_GETADDRINFO=1"

	if use crypt ; then
		args="${args} USE_LIBCRYPT=1"
	else
		args="${args} USE_LIBCRYPT="
	fi

# bug 541042
#	if use lua; then
#		args="${args} USE_LUA=1"
#	else
		args="${args} USE_LUA="
#	fi

	if use net_ns; then
		args="${args} USE_NS=1"
	else
		args="${args} USE_NS="
	fi

	if use pcre ; then
		args="${args} USE_PCRE=1"
		if use pcre-jit; then
			args="${args} USE_PCRE_JIT=1"
		else
			args="${args} USE_PCRE_JIT="
		fi
	else
		args="${args} USE_PCRE= USE_PCRE_JIT="
	fi

#	if use kernel_linux; then
#		args="${args} USE_LINUX_SPLICE=1 USE_LINUX_TPROXY=1"
#	else
#		args="${args} USE_LINUX_SPLICE= USE_LINUX_TPROXY="
#	fi

	if use ssl ; then
		args="${args} USE_OPENSSL=1"
	else
		args="${args} USE_OPENSSL="
	fi

	if use zlib ; then
		args="${args} USE_ZLIB=1"
	else
		args="${args} USE_ZLIB="
	fi

	# For now, until the strict-aliasing breakage will be fixed
	append-cflags -fno-strict-aliasing

	emake CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" CC=$(tc-getCC) ${args}

	if use tools ; then
		for contrib in halog iprange ; do
			emake -C contrib/${contrib} \
				CFLAGS="${CFLAGS}" OPTIMIZE="${CFLAGS}" LDFLAGS="${LDFLAGS}" CC=$(tc-getCC) ${args}
		done
	fi
}

src_install() {
	dobin haproxy

	newconfd "${FILESDIR}/${PN}.confd" $PN
	newinitd "${FILESDIR}/${PN}.initd-r3" $PN

	dodoc CHANGELOG CONTRIBUTING MAINTAINERS
	doman doc/haproxy.1

	dobin haproxy-systemd-wrapper
	systemd_dounit contrib/systemd/haproxy.service

	if use doc; then
		dodoc ROADMAP doc/{close-options,configuration,cookie-options,intro,linux-syn-cookies,management,proxy-protocol}.txt
	fi

	if use tools ; then
		dobin contrib/halog/halog
		newbin contrib/iprange/iprange haproxy_iprange
	fi

	if use net_ns && use doc; then
		dodoc doc/network-namespaces.txt
	fi

	if use examples ; then
		docinto examples
		dodoc examples/*.cfg
		dodoc examples/seamless_reload.txt
	fi

	if use vim-syntax ; then
		insinto /usr/share/vim/vimfiles/syntax
		doins examples/haproxy.vim
	fi
}

pkg_postinst() {
	if [[ ! -f "${ROOT}/etc/haproxy/haproxy.cfg" ]] ; then
		ewarn "You need to create /etc/haproxy/haproxy.cfg before you start the haproxy service."
		ewarn "It's best practice to not run haproxy as root, user and group haproxy was therefore created."
		ewarn "Make use of them with the \"user\" and \"group\" directives."

		if [[ -d "${ROOT}/usr/share/doc/${PF}" ]]; then
			einfo "Please consult the installed documentation for learning the configuration file's syntax."
			einfo "The documentation and sample configuration files are installed here:"
			einfo "   ${ROOT}usr/share/doc/${PF}"
		fi
	fi
}