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

EAPI=5

inherit eutils multilib pam ssl-cert systemd

DESCRIPTION="The Erlang Jabber Daemon"
HOMEPAGE="http://www.ejabberd.im/ https://github.com/processone/ejabberd/"
SRC_URI="http://www.process-one.net/downloads/${PN}/${PV}/${P}.tgz
	mod_statsdx? ( https://dev.gentoo.org/~radhermit/dist/${PN}-mod_statsdx-1118.patch.gz )"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="amd64 ~arm ~ia64 ppc ~sparc x86"
EJABBERD_MODULES="mod_irc mod_muc mod_proxy65 mod_pubsub mod_statsdx"
IUSE="captcha debug ldap odbc pam +web zlib ${EJABBERD_MODULES}"

DEPEND=">=net-im/jabber-base-0.01
	>=dev-libs/expat-1.95
	>=dev-lang/erlang-12.2.5[ssl]
	<dev-lang/erlang-16
	odbc? ( dev-db/unixODBC )
	ldap? ( =net-nds/openldap-2* )
	>=dev-libs/openssl-0.9.8e:=
	captcha? ( media-gfx/imagemagick[truetype,png] )
	zlib? ( sys-libs/zlib )"
#>=sys-apps/shadow-4.1.4.2-r3 - fixes bug in su that made ejabberdctl unworkable.
RDEPEND="${DEPEND}
	>=sys-apps/shadow-4.1.4.2-r3
	pam? ( virtual/pam )"

S=${WORKDIR}/${P}/src

# paths in net-im/jabber-base
JABBER_ETC="${EPREFIX}/etc/jabber"
#JABBER_RUN="/var/run/jabber"
JABBER_SPOOL="${EPREFIX}/var/spool/jabber"
JABBER_LOG="${EPREFIX}/var/log/jabber"
JABBER_DOC="${EPREFIX}/usr/share/doc/${PF}"

src_prepare() {
	if use mod_statsdx; then
		ewarn "mod_statsdx is not a part of upstream tarball but is a third-party module"
		ewarn "taken from here: http://www.ejabberd.im/mod_stats2file"
		EPATCH_OPTS="-p2" epatch "${WORKDIR}"/${PN}-mod_statsdx-1118.patch
	fi

	# don't install release notes (we'll do this manually)
	sed '/install .* [.][.]\/doc\/[*][.]txt $(DOCDIR)/d' -i Makefile.in || die
	# Set correct paths
	sed -e "/^EJABBERDDIR[[:space:]]*=/{s:ejabberd:${PF}:}" \
		-e "/^ETCDIR[[:space:]]*=/{s:@sysconfdir@/ejabberd:${JABBER_ETC}:}" \
		-e "/^LOGDIR[[:space:]]*=/{s:@localstatedir@/log/ejabberd:${JABBER_LOG}:}" \
		-e "/^SPOOLDIR[[:space:]]*=/{s:@localstatedir@/lib/ejabberd:${JABBER_SPOOL}:}" \
			-i Makefile.in || die
	sed -e "/EJABBERDDIR=/{s:ejabberd:${PF}:}" \
		-e "s|\(ETCDIR=\)@SYSCONFDIR@.*|\1${JABBER_ETC}|" \
		-e "s|\(LOGS_DIR=\)@LOCALSTATEDIR@.*|\1${JABBER_LOG}|" \
		-e "s|\(SPOOLDIR=\)@LOCALSTATEDIR@.*|\1${JABBER_SPOOL}|" \
			-i ejabberdctl.template || die

	# Set shell, so it'll work even in case jabber user have no shell
	# This is gentoo specific I guess since other distributions may have
	# ejabberd user with reall shell, while we share this user among different
	# jabberd implementations.
	sed '/^HOME/aSHELL=/bin/sh' -i ejabberdctl.template || die
	sed '/^export HOME/aexport SHELL' -i ejabberdctl.template || die

	#sed -e "s:/share/doc/ejabberd/:${JABBER_DOC}:" -i web/ejabberd_web_admin.erl

	# fix up the ssl cert paths in ejabberd.cfg to use our cert
	sed -e "s:/path/to/ssl.pem:/etc/ssl/ejabberd/server.pem:g" \
		-i ejabberd.cfg.example || die "Failed sed ejabberd.cfg.example"

	# correct path to captcha script in default ejabberd.cfg
	sed -e 's|\({captcha_cmd,[[:space:]]*"\).\+"}|\1/usr/'$(get_libdir)'/erlang/lib/'${P}'/priv/bin/captcha.sh"}|' \
			-i ejabberd.cfg.example || die "Failed sed ejabberd.cfg.example"

	# disable mod_irc in ejabberd.cfg
	if ! use mod_irc; then
		sed -i -e "s/{mod_irc,/%{mod_irc,/" \
			-i ejabberd.cfg.example || die "Failed to disable mod_irc"
	fi

}

src_configure() {
	econf \
		--docdir="${EPREFIX}/usr/share/doc/${PF}/html" \
		--libdir="${EPREFIX}/usr/$(get_libdir)/erlang/lib/" \
		$(use_enable mod_irc) \
		$(use_enable ldap eldap) \
		$(use_enable mod_muc) \
		$(use_enable mod_proxy65) \
		$(use_enable mod_pubsub) \
		$(use_enable web) \
		$(use_enable odbc) \
		$(use_enable zlib ejabberd_zlib) \
		$(use_enable pam) \
		--enable-user=jabber
}

src_compile() {
	emake $(use debug && echo debug=true ejabberd_debug=true)
}

src_install() {
	default

	# Pam helper module permissions
	# http://www.process-one.net/docs/ejabberd/guide_en.html
	if use pam; then
		pamd_mimic_system xmpp auth account || die "Cannot create pam.d file"
		fowners root:jabber "/usr/$(get_libdir)/erlang/lib/${PF}/priv/bin/epam"
		fperms 4750 "/usr/$(get_libdir)/erlang/lib/${PF}/priv/bin/epam"
	fi

	cd "${WORKDIR}"/${P}/doc
	dodoc release_notes_${PV%%_rc*}.txt

	newinitd "${FILESDIR}"/${PN}-3.initd ${PN}
	newconfd "${FILESDIR}"/${PN}-3.confd ${PN}
	systemd_dounit "${FILESDIR}"/${PN}.service
	systemd_dotmpfilesd "${FILESDIR}"/${PN}.tmpfiles.conf

	insinto /etc/logrotate.d
	newins "${FILESDIR}"/${PN}.logrotate ${PN}
}

pkg_postinst() {
	if [[ -z ${REPLACING_VERSIONS} ]] ; then
		elog "For configuration instructions, please see"
		elog "/usr/share/doc/${PF}/html/guide.html, or the online version at"
		elog "http://www.process-one.net/en/ejabberd/docs/guide_en/"

		if ! use web ; then
			ewarn
			ewarn "The web USE flag is off, this has disabled the web admin interface."
			ewarn
		fi

		elog
		elog '===================================================================='
		elog 'Quick Start Guide:'
		elog '1) Add output of `hostname -f` to /etc/jabber/ejabberd.cfg line 91'
		elog '   {hosts, ["localhost", "thehost"]}.'
		elog '2) Add an admin user to /etc/jabber/ejabberd.cfg line 360'
		elog '   {acl, admin, {user, "theadmin", "thehost"}}.'
		elog '3) Start the server'
		elog '   # /etc/init.d/ejabberd start (for openRC)'
		elog '	 # systemctl start ejabberd (for Systemd)'
		elog '4) Register the admin user'
		elog '   # /usr/sbin/ejabberdctl register theadmin thehost thepassword'
		elog '5) Log in with your favourite jabber client or using the web admin'
	fi

	# Upgrading from ejabberd-2.0.x:
	if grep -E '^[^#]*EJABBERD_NODE=' "${EROOT}/etc/conf.d/ejabberd" >/dev/null 2>&1; then
		source "${EROOT}/etc/conf.d/ejabberd"
		ewarn
		ewarn "!!! WARNING !!!  WARNING !!!  WARNING !!!  WARNING !!!"
		ewarn "Starting with 2.1.x some paths and configuration files were"
		ewarn "changed to reflect upstream intentions better. Notable changes are:"
		ewarn
		ewarn "1. Everything (even init scripts) is now handled with ejabberdctl script."
		ewarn "Thus main configuration file became /etc/jabberd/ejabberdctl.cfg"
		ewarn "You must update ERLANG_NODE there with the value of EJABBERD_NODE"
		ewarn "from /etc/conf.d/ejebberd or ejabberd will refuse to start."
		ewarn
		ewarn "2. SSL certificate is now generated with ssl-cert eclass and resides"
		ewarn "at standard location: /etc/ssl/ejabberd/server.pem."
		ewarn
		ewarn "3. Cookie now resides at /var/spool/jabber/.erlang.cookie"
		ewarn
		ewarn "4. /var/log/jabber/sasl.log is now /var/log/jabber/erlang.log"
		ewarn
		ewarn "5. Crash dumps (if any) will be located at /var/log/jabber"

		local i ctlcfg new_ctlcfg
		i=0
		ctlcfg=${EROOT}/etc/jabber/ejabberdctl.cfg
		while :; do
			new_ctlcfg=$(printf "${EROOT}/etc/jabber/._cfg%04d_ejabberdctl.cfg" ${i})
			[[ ! -e ${new_ctlcfg} ]] && break
			ctlcfg=${new_ctlcfg}
			((i++))
		done

		ewarn
		ewarn "Updating ${ctlcfg} (debug: ${new_ctlcfg})"
		sed -e "/#ERLANG_NODE=/aERLANG_NODE=$EJABBERD_NODE" "${ctlcfg}" > "${new_ctlcfg}" || die

		if [[ -e ${EROOT}/var/run/jabber/.erlang.cookie ]]; then
			ewarn "Moving .erlang.cookie..."
			if [[ -e ${EROOT}/var/spool/jabber/.erlang.cookie ]]; then
				mv -v "${EROOT}"/var/spool/jabber/.erlang.cookie{,bak}
			fi
			mv -v "${EROOT}"/var/{run/jabber,spool/jabber}/.erlang.cookie
		fi
		ewarn
		ewarn "We'll try to handle upgrade automagically but, please, do your"
		ewarn "own checks and do not forget to run 'etc-update'!"
		ewarn "PLEASE! Run 'etc-update' now!"
	fi

	SSL_ORGANIZATION="${SSL_ORGANIZATION:-Ejabberd XMPP Server}"
	install_cert /etc/ssl/ejabberd/server
	# Fix ssl cert permissions bug #369809
	chown root:jabber "${EROOT}/etc/ssl/ejabberd/server.pem"
	chmod 0440 "${EROOT}/etc/ssl/ejabberd/server.pem"
	if [[ -e ${EROOT}/etc/jabber/ssl.pem ]]; then
		ewarn
		ewarn "The location of SSL certificates has changed. If you are"
		ewarn "upgrading from ${CATEGORY}/${PN}-2.0.5* or earlier  you might"
		ewarn "want to move your old certificates from /etc/jabber into"
		ewarn "/etc/ssl/ejabberd/, update config files and"
		ewarn "rm /etc/jabber/ssl.pem to avoid this message."
		ewarn
	fi
}