# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit flag-o-matic

DESCRIPTION="Courier authentication library"
SRC_URI="mirror://sourceforge/courier/${P}.tar.bz2"
HOMEPAGE="https://www.courier-mta.org/authlib/"

LICENSE="GPL-3"
SLOT="0"
KEYWORDS="~alpha amd64 arm ~arm64 ~hppa ~ia64 ~loong ~mips ~ppc ppc64 ~riscv ~s390 sparc x86"
IUSE="berkdb debug gdbm ldap mysql pam postgres sqlite static-libs"

RESTRICT="!berkdb? ( test )"

DEPEND="net-mail/mailbase
	>=net-libs/courier-unicode-2.2.3:=
	virtual/libcrypt:=
	gdbm? ( sys-libs/gdbm:= )
	!gdbm? ( sys-libs/db:= )
	dev-libs/openssl:0=
	ldap? ( >=net-nds/openldap-1.2.11:= )
	mysql? ( dev-db/mysql-connector-c:= )
	pam? ( sys-libs/pam )
	postgres? ( dev-db/postgresql:= )
	sqlite? ( dev-db/sqlite:3 )"

RDEPEND="${DEPEND}"

pkg_setup() {
	if ! has_version 'dev-tcltk/expect' ; then
		ewarn 'The dev-tcltk/expect package is not installed.'
		ewarn 'Without it, you will not be able to change system login passwords.'
		ewarn 'However non-system authentication modules (LDAP, MySQL, PostgreSQL,'
		ewarn 'and others) will work just fine.'
	fi
}

src_configure() {
	filter-flags -fomit-frame-pointer
	local myconf
	if use berkdb ; then
		if use gdbm ; then
			ewarn "Both gdbm and berkdb selected. Using gdbm."
		else
			myconf="--with-db=db"
		fi
	fi
	use gdbm && myconf="--with-db=gdbm"
	use debug && myconf+=" debug=true"
	use sqlite && myconf+=" --with-sqlite-libs"

	econf \
		--sysconfdir=/etc/courier \
		--datadir=/usr/share/courier \
		--localstatedir=/var/lib/courier \
		--sharedstatedir=/var/lib/courier/com \
		--with-authdaemonvar=/var/lib/courier/authdaemon \
		--with-authshadow \
		--with-mailuser=mail \
		--with-mailgroup=mail \
		--cache-file="${S}/configuring.cache" \
		$(use_with pam authpam) \
		$(use_with ldap authldap) \
		$(use_with mysql authmysql) \
		$(use_with postgres authpgsql) \
		$(use_with sqlite authsqlite) \
		${myconf}
}

orderfirst() {
	file="${D}/etc/courier/authlib/${1}" ; option="${2}" ; param="${3}"
	if [[ -e "${file}" ]] ; then
		orig="$(grep ^${option}= ${file} | cut -d\" -f 2)"
		new="${option}=\"${param} `echo ${orig} | sed -e\"s/${param}//g\" -e\"s/  / /g\"`\""
		sed -i -e "s/^${option}=.*$/${new}/" "${file}" || die
	fi
}

finduserdb() {
	for dir in \
		/etc/courier/authlib /etc/courier /etc/courier-imap \
		/usr/lib/courier/etc /usr/lib/courier-imap/etc \
		/usr/local/etc /usr/local/etc/courier /usr/local/courier/etc \
		/usr/local/lib/courier/etc /usr/local/lib/courier-imap/etc \
		/usr/local/share/sqwebmail /usr/local/etc/courier-imap ; do
		if [[ -e "${dir}/userdb" ]] ; then
			einfo "Found userdb at: ${dir}/userdb"
			cp -fR "${dir}/userdb" "${D}/etc/courier/authlib/" || die
			chmod go-rwx "${D}/etc/courier/authlib/userdb" || die
			continue
		fi
	done
}

src_install() {
	diropts -o mail -g mail
	dodir /etc/courier
	keepdir /var/lib/courier/authdaemon
	keepdir /etc/courier/authlib
	emake DESTDIR="${D}" install
	[[ ! -e "${D}/etc/courier/authlib/userdb" ]] && finduserdb
	emake DESTDIR="${D}" install-configure
	rm -f "${D}"/etc/courier/authlib/*.bak
	chown mail:mail "${D}"/etc/courier/authlib/* || die
	for y in "${D}"/etc/courier/authlib/*.dist ; do
		[[ ! -e "${y%%.dist}" ]] && cp -f "${y}" "${y%%.dist}"
	done
	use pam && orderfirst authdaemonrc authmodulelist authpam
	use ldap && orderfirst authdaemonrc authmodulelist authldap
	use sqlite && orderfirst authdaemonrc authmodulelist authsqlite
	use postgres && orderfirst authdaemonrc authmodulelist authpgsql
	use mysql && orderfirst authdaemonrc authmodulelist authmysql

	DOCS=( AUTHORS ChangeLog* INSTALL NEWS README )
	HTML_DOCS=(	README.html README_authlib.html NEWS.html INSTALL.html README.authdebug.html )
	if use mysql ; then
		DOCS+=( README.authmysql.myownquery )
		HTML_DOCS+=( README.authmysql.html )
	fi
	if use postgres ; then
		HTML_DOCS+=( README.authpostgres.html README.authmysql.html )
	fi
	if use ldap ; then
		DOCS+=( README.ldap )
		dodir /etc/openldap/schema
		cp -f authldap.schema "${D}/etc/openldap/schema/" || die
	fi
	if use sqlite ; then
		HTML_DOCS+=( README.authsqlite.html README.authmysql.html )
	fi
	einstalldocs

	newinitd "${FILESDIR}/${PN}-r2" "${PN}"

	use static-libs || find "${D}" -name "*.a" -delete
}

pkg_postinst() {
	if [[ -e /etc/courier/authlib/userdb ]] ; then
		einfo "Running makeuserdb ..."
		chmod go-rwx /etc/courier/authlib/userdb || die
		makeuserdb
	fi
}