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

EAPI=7

inherit systemd toolchain-funcs

DESCRIPTION="Very Secure FTP Daemon written with speed, size and security in mind"
HOMEPAGE="http://vsftpd.beasts.org/"
SRC_URI="http://security.appspot.com/downloads/${P}.tar.gz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~ppc ~ppc64 ~s390 ~sparc ~x86"
IUSE="caps pam tcpd ssl selinux xinetd"

DEPEND="caps? ( >=sys-libs/libcap-2 )
	pam? ( sys-libs/pam )
	tcpd? ( >=sys-apps/tcp-wrappers-7.6 )
	ssl? ( dev-libs/openssl:0= )"
RDEPEND="${DEPEND}
	net-ftp/ftpbase
	selinux? ( sec-policy/selinux-ftp )
	xinetd? ( sys-apps/xinetd )"

PATCHES=(
	# kerberos patch. bug #335980
	"${FILESDIR}/${PN}-2.3.2-kerberos.patch"

	# Patch the source, config and the manpage to use /etc/vsftpd/
	"${FILESDIR}/${PN}-2.3.5-gentoo.patch"

	# Fix building without the libcap
	"${FILESDIR}/${PN}-2.1.0-caps.patch"

	# Fix building on alpha. Bug #405829
	"${FILESDIR}/${PN}-3.0.2-alpha.patch"

	# Bug #335977
	"${FILESDIR}"/${PN}-3.0.0-Makefile.patch

	# Bug #450536
	"${FILESDIR}"/${PN}-3.0.2-remove-legacy-cap.patch

	# Bug #630704
	"${FILESDIR}"/${PN}-3.0.3-sparc.patch

	# https://bugs.gentoo.org/443898
	#"${FILESDIR}"/vsftpd-disable-seccomp-sandbox.patch
)

src_prepare() {
	# Configure vsftpd build defaults
	if use tcpd ; then
		echo "#define VSF_BUILD_TCPWRAPPERS" >> builddefs.h || die
	fi

	if use ssl ; then
		echo "#define VSF_BUILD_SSL" >> builddefs.h || die
	fi

	if ! use pam; then
		echo "#undef VSF_BUILD_PAM" >> builddefs.h || die
	fi

	# Ensure that we don't link against libcap unless asked
	if ! use caps ; then
		sed -i '/^#define VSF_SYSDEP_HAVE_LIBCAP$/ d' sysdeputil.c || die
		eapply "${FILESDIR}"/${PN}-3.0.4-dont-link-caps.patch
	fi

	# Let portage control stripping
	sed -i '/^LINK[[:space:]]*=[[:space:]]*/ s/-Wl,-s//' Makefile || die

	default
}

src_compile() {
	# Override LIBS variable. Bug #508192
	LIBS=
	use caps && LIBS+=" -lcap"
	use pam && LIBS+=" -lpam"
	use tcpd && LIBS+=" -lwrap"
	use ssl && LIBS+=" -lssl -lcrypto"

	tc-export CC

	CFLAGS="${CFLAGS}" emake LIBS="${LIBS}"
}

src_install() {
	into /usr
	doman ${PN}.conf.5 ${PN}.8
	dosbin ${PN}

	dodoc AUDIT BENCHMARKS BUGS Changelog FAQ \
		README README.security REWARD SIZE \
		SPEED TODO TUNING
	newdoc ${PN}.conf ${PN}.conf.example

	docinto security
	dodoc SECURITY/*

	docinto examples
	dodoc -r EXAMPLE/*

	insinto /etc/${PN}
	newins ${PN}.conf{,.example}

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

	if use xinetd ; then
		insinto /etc/xinetd.d
		newins "${FILESDIR}"/${PN}.xinetd ${PN}
	fi

	newinitd "${FILESDIR}"/${PN}.init ${PN}

	keepdir /usr/share/${PN}/empty

	exeinto /usr/libexec
	doexe "${FILESDIR}"/vsftpd-checkconfig.sh
	systemd_dounit "${FILESDIR}"/${PN}.service
	systemd_newunit "${FILESDIR}"/${PN}_at.service "${PN}@.service"
	systemd_dounit "${FILESDIR}"/${PN}.socket
}

pkg_preinst() {
	# If we use xinetd, then we set listen=NO
	# so that our default config works under xinetd - fixes #78347
	if use xinetd ; then
		sed -i 's/listen=YES/listen=NO/g' "${D}"/etc/${PN}/${PN}.conf.example || die
	fi
}

pkg_postinst() {
	einfo "vsftpd openRC init script can now be multiplexed."
	einfo "The default init script forces /etc/vsftpd/vsftpd.conf to exist."
	einfo "If you symlink the init script to another one, say vsftpd.foo"
	einfo "then that uses /etc/vsftpd/foo.conf instead."
	einfo
	einfo "Example:"
	einfo "   cd /etc/init.d"
	einfo "   ln -s vsftpd vsftpd.foo"
	einfo "You can now treat vsftpd.foo like any other service"
}