# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

# needed to make webapp-config dep optional
WEBAPP_OPTIONAL="yes"
inherit webapp java-pkg-opt-2 systemd toolchain-funcs tmpfiles user-info

DESCRIPTION="ZABBIX is software for monitoring of your applications, network and servers"
HOMEPAGE="https://www.zabbix.com/"
MY_P=${P/_/}
MY_PV=${PV/_/}
SRC_URI="https://cdn.zabbix.com/${PN}/sources/stable/4.0/${P}.tar.gz"
LICENSE="GPL-2"
SLOT="0/$(ver_cut 1-2)"
WEBAPP_MANUAL_SLOT="yes"
KEYWORDS="amd64 x86"
IUSE="+agent java curl frontend ipv6 xmpp ldap libxml2 mysql openipmi oracle +postgres proxy server ssh ssl snmp sqlite odbc static"
REQUIRED_USE="|| ( agent frontend proxy server )
	proxy? ( ^^ ( mysql oracle postgres sqlite odbc ) )
	server? ( ^^ ( mysql oracle postgres odbc ) )
	static? ( !oracle !snmp )"

COMMON_DEPEND="
	curl? ( net-misc/curl )
	java? ( >=virtual/jdk-1.8:* )
	ldap? (
		=dev-libs/cyrus-sasl-2*
		net-libs/gnutls
		net-nds/openldap
	)
	libxml2? ( dev-libs/libxml2 )
	mysql? ( dev-db/mysql-connector-c )
	odbc? ( dev-db/unixODBC )
	openipmi? ( sys-libs/openipmi )
	oracle? ( dev-db/oracle-instantclient-basic )
	postgres? ( dev-db/postgresql:* )
	proxy?  ( sys-libs/zlib )
	server? (
		dev-libs/libevent
		sys-libs/zlib
	)
	snmp? ( net-analyzer/net-snmp )
	sqlite? ( dev-db/sqlite )
	ssh? ( net-libs/libssh2 )
	ssl? ( dev-libs/openssl:=[-bindist] )
	xmpp? ( dev-libs/iksemel )
"

RDEPEND="${COMMON_DEPEND}
	acct-group/zabbix
	acct-user/zabbix
	java? ( >=virtual/jre-1.8:* )
	mysql? ( virtual/mysql )
	proxy? ( net-analyzer/fping[suid] )
	server? (
		app-admin/webapp-config
		dev-libs/libevent
		dev-libs/libpcre
		net-analyzer/fping[suid]
	)
	frontend? (
		app-admin/webapp-config
		dev-lang/php:*[bcmath,ctype,sockets,gd,truetype,xml,session,xmlreader,xmlwriter,nls,sysvipc,unicode]
		media-libs/gd[png]
		virtual/httpd-php:*
		mysql? ( dev-lang/php[mysqli] )
		odbc? ( dev-lang/php[odbc] )
		oracle? ( dev-lang/php[oci8-instant-client] )
		postgres? ( dev-lang/php[postgres] )
		sqlite? ( dev-lang/php[sqlite] )
	)
"
DEPEND="${COMMON_DEPEND}
	static? (
		curl? ( net-misc/curl[static-libs] )
		ldap? (
			=dev-libs/cyrus-sasl-2*[static-libs]
			net-libs/gnutls[static-libs]
			net-nds/openldap[static-libs]
		)
		libxml2? ( dev-libs/libxml2[static-libs] )
		mysql? ( dev-db/mysql-connector-c[static-libs] )
		odbc? ( dev-db/unixODBC[static-libs] )
		postgres? ( dev-db/postgresql:*[static-libs] )
		sqlite? ( dev-db/sqlite[static-libs] )
		ssh? ( net-libs/libssh2 )
	)
"
BDEPEND="
	virtual/pkgconfig
"

PATCHES=(
	"${FILESDIR}/${PN}-4.0.18-modulepathfix.patch"
	"${FILESDIR}/${PN}-3.0.30-security-disable-PidFile.patch"
)

S=${WORKDIR}/${MY_P}

ZABBIXJAVA_BASE="opt/zabbix_java"

pkg_setup() {
	if use oracle; then
		if [ -z "${ORACLE_HOME}" ]; then
			eerror
			eerror "The environment variable ORACLE_HOME must be set"
			eerror "and point to the correct location."
			eerror "It looks like you don't have Oracle installed."
			eerror
			die "Environment variable ORACLE_HOME is not set"
		fi
		if has_version 'dev-db/oracle-instantclient-basic'; then
			ewarn
			ewarn "Please ensure you have a full install of the Oracle client."
			ewarn "dev-db/oracle-instantclient* is NOT sufficient."
			ewarn
		fi
	fi

	if use frontend; then
		webapp_pkg_setup
	fi

	java-pkg-opt-2_pkg_setup
}

src_prepare() {
	default
}

src_configure() {
	econf \
		$(use_enable agent) \
		$(use_enable ipv6) \
		$(use_enable java) \
		$(use_enable proxy) \
		$(use_enable server) \
		$(use_enable static) \
		$(use_with curl libcurl) \
		$(use_with ldap) \
		$(use_with libxml2) \
		$(use_with mysql) \
		$(use_with odbc unixodbc) \
		$(use_with openipmi openipmi) \
		$(use_with oracle) \
		$(use_with postgres postgresql) \
		$(use_with snmp net-snmp) \
		$(use_with sqlite sqlite3) \
		$(use_with ssh ssh2) \
		$(use_with ssl openssl) \
		$(use_with xmpp jabber)
}

src_compile() {
	if [ -f Makefile ] || [ -f GNUmakefile ] || [ -f makefile ]; then
		emake AR="$(tc-getAR)" RANLIB="$(tc-getRANLIB)"
	fi
}

src_install() {
	local dirs=(
		/etc/zabbix
		/var/lib/zabbix
		/var/lib/zabbix/home
		/var/lib/zabbix/scripts
		/var/lib/zabbix/alertscripts
		/var/lib/zabbix/externalscripts
		/var/log/zabbix
	)

	for dir in "${dirs[@]}"; do
		dodir "${dir}"
		keepdir "${dir}"
	done

	if use server; then
		insinto /etc/zabbix
		doins "${S}"/conf/zabbix_server.conf
		fperms 0640 /etc/zabbix/zabbix_server.conf
		fowners root:zabbix /etc/zabbix/zabbix_server.conf

		newinitd "${FILESDIR}"/zabbix-server.init zabbix-server

		dosbin src/zabbix_server/zabbix_server

		insinto /usr/share/zabbix
		doins -r "${S}"/database/

		systemd_dounit "${FILESDIR}"/zabbix-server.service
		newtmpfiles "${FILESDIR}"/zabbix-server.tmpfiles zabbix-server.conf
	fi

	if use proxy; then
		insinto /etc/zabbix
		doins "${S}"/conf/zabbix_proxy.conf
		fperms 0640 /etc/zabbix/zabbix_proxy.conf
		fowners root:zabbix /etc/zabbix/zabbix_proxy.conf

		newinitd "${FILESDIR}"/zabbix-proxy.init zabbix-proxy

		dosbin src/zabbix_proxy/zabbix_proxy

		insinto /usr/share/zabbix
		doins -r "${S}"/database/

		systemd_dounit "${FILESDIR}"/zabbix-proxy.service
		newtmpfiles "${FILESDIR}"/zabbix-proxy.tmpfiles zabbix-proxy.conf
	fi

	if use agent; then
		insinto /etc/zabbix
		doins "${S}"/conf/zabbix_agentd.conf
		fperms 0640 /etc/zabbix/zabbix_agentd.conf
		fowners root:zabbix /etc/zabbix/zabbix_agentd.conf

		newinitd "${FILESDIR}"/zabbix-agentd.init zabbix-agentd

		dosbin src/zabbix_agent/zabbix_agentd
		dobin \
			src/zabbix_sender/zabbix_sender \
			src/zabbix_get/zabbix_get

		systemd_dounit "${FILESDIR}"/zabbix-agentd.service
		newtmpfiles "${FILESDIR}"/zabbix-agentd.tmpfiles zabbix-agentd.conf
	fi

	fowners root:zabbix /etc/zabbix
	fowners zabbix:zabbix \
		/var/lib/zabbix \
		/var/lib/zabbix/home \
		/var/lib/zabbix/scripts \
		/var/lib/zabbix/alertscripts \
		/var/lib/zabbix/externalscripts \
		/var/log/zabbix
	fperms 0750 \
		/etc/zabbix \
		/var/lib/zabbix \
		/var/lib/zabbix/home \
		/var/lib/zabbix/scripts \
		/var/lib/zabbix/alertscripts \
		/var/lib/zabbix/externalscripts \
		/var/log/zabbix

	dodoc README INSTALL NEWS ChangeLog \
		conf/zabbix_agentd.conf \
		conf/zabbix_proxy.conf \
		conf/zabbix_agentd/userparameter_examples.conf \
		conf/zabbix_agentd/userparameter_mysql.conf \
		conf/zabbix_server.conf

	if use frontend; then
		webapp_src_preinst
		cp -R frontends/php/* "${D}/${MY_HTDOCSDIR}"
		webapp_configfile \
			"${MY_HTDOCSDIR}"/include/db.inc.php \
			"${MY_HTDOCSDIR}"/include/config.inc.php
		webapp_src_install
	fi

	if use java; then
		dodir \
			/${ZABBIXJAVA_BASE} \
			/${ZABBIXJAVA_BASE}/bin \
			/${ZABBIXJAVA_BASE}/lib
		keepdir /${ZABBIXJAVA_BASE}
		exeinto /${ZABBIXJAVA_BASE}/bin
		doexe src/zabbix_java/bin/zabbix-java-gateway-${MY_PV}.jar
		exeinto /${ZABBIXJAVA_BASE}/lib
		doexe \
			src/zabbix_java/lib/logback-classic-1.2.3.jar \
			src/zabbix_java/lib/logback-console.xml \
			src/zabbix_java/lib/logback-core-1.2.3.jar \
			src/zabbix_java/lib/logback.xml \
			src/zabbix_java/lib/android-json-4.3_r3.1.jar \
			src/zabbix_java/lib/slf4j-api-1.7.30.jar
		newinitd "${FILESDIR}"/zabbix-jmx-proxy.init zabbix-jmx-proxy
		newconfd "${FILESDIR}"/zabbix-jmx-proxy.conf zabbix-jmx-proxy
	fi
}

pkg_postinst() {
	if use server || use proxy ; then
		elog
		elog "You may need to configure your database for Zabbix"
		elog "if you have not already done so."
		elog

		zabbix_homedir=$(egethome zabbix)
		if [ -n "${zabbix_homedir}" ] && \
		   [ "${zabbix_homedir}" != "/var/lib/zabbix/home" ]; then
			ewarn
			ewarn "The user 'zabbix' should have his homedir changed"
			ewarn "to /var/lib/zabbix/home if you want to use"
			ewarn "custom alert scripts."
			ewarn
			ewarn "A real homedir might be needed for configfiles"
			ewarn "for custom alert scripts (e.g. ~/.sendxmpprc when"
			ewarn "using sendxmpp for Jabber alerts)."
			ewarn
			ewarn "To change the homedir use:"
			ewarn "  usermod -d /var/lib/zabbix/home zabbix"
			ewarn
		fi
	fi

	if use server; then
		elog
		elog "For distributed monitoring you have to run:"
		elog
		elog "zabbix_server -n <nodeid>"
		elog
		elog "This will convert database data for use with Node ID"
		elog "and also adds a local node."
		elog
	fi

	elog "--"
	elog
	elog "You may need to add these lines to /etc/services:"
	elog
	elog "zabbix-agent     10050/tcp Zabbix Agent"
	elog "zabbix-agent     10050/udp Zabbix Agent"
	elog "zabbix-trapper   10051/tcp Zabbix Trapper"
	elog "zabbix-trapper   10051/udp Zabbix Trapper"
	elog

	if use server || use proxy ; then
		# check for fping
		fping_perms=$(stat -c %a /usr/sbin/fping 2>/dev/null)
		case "${fping_perms}" in
			4[157][157][157])
				;;
			*)
				ewarn
				ewarn "If you want to use the checks 'icmpping' and 'icmppingsec',"
				ewarn "you have to make /usr/sbin/fping setuid root and executable"
				ewarn "by everyone. Run the following command to fix it:"
				ewarn
				ewarn "  chmod u=rwsx,g=rx,o=rx /usr/sbin/fping"
				ewarn
				ewarn "Please be aware that this might impose a security risk,"
				ewarn "depending on the code quality of fping."
				ewarn
				;;
		esac
	fi
}

pkg_prerm() {
	(use frontend || use server) && webapp_pkg_prerm
}