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# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=6

inherit eutils pam multilib libtool tmpfiles
if [[ ${PV} == "9999" ]] ; then
	EHG_REPO_URI="https://www.sudo.ws/repos/sudo"
	inherit mercurial
fi

MY_P=${P/_/}
MY_P=${MY_P/beta/b}

uri_prefix=
case ${P} in
	*_beta*|*_rc*) uri_prefix=beta/ ;;
esac

DESCRIPTION="Allows users or groups to run commands as other users"
HOMEPAGE="https://www.sudo.ws/"
if [[ ${PV} != "9999" ]] ; then
	SRC_URI="https://www.sudo.ws/sudo/dist/${uri_prefix}${MY_P}.tar.gz
		ftp://ftp.sudo.ws/pub/sudo/${uri_prefix}${MY_P}.tar.gz"
	if [[ ${PV} != *_beta* ]] && [[ ${PV} != *_rc* ]] ; then
		KEYWORDS="alpha amd64 arm arm64 hppa ia64 m68k ~mips ppc ppc64 s390 sh sparc x86 ~amd64-fbsd ~x86-fbsd ~sparc-solaris"
	fi
fi

# Basic license is ISC-style as-is, some files are released under
# 3-clause BSD license
LICENSE="ISC BSD"
SLOT="0"
IUSE="gcrypt ldap libressl nls offensive pam sasl +secure-path selinux +sendmail skey sssd system-digest"

CDEPEND="
	sys-libs/zlib:=
	ldap? (
		>=net-nds/openldap-2.1.30-r1
		dev-libs/cyrus-sasl
	)
	pam? ( virtual/pam )
	sasl? ( dev-libs/cyrus-sasl )
	skey? ( >=sys-auth/skey-1.1.5-r1 )
	sssd? ( sys-auth/sssd[sudo] )
	system-digest? (
		gcrypt? ( dev-libs/libgcrypt:= )
		!gcrypt? (
			!libressl? ( dev-libs/openssl:0= )
			libressl? ( dev-libs/libressl:0= )
		)
	)
"
RDEPEND="
	${CDEPEND}
	>=app-misc/editor-wrapper-3
	virtual/editor
	ldap? ( dev-lang/perl )
	pam? ( sys-auth/pambase )
	selinux? ( sec-policy/selinux-sudo )
	sendmail? ( virtual/mta )
"
DEPEND="
	${CDEPEND}
	sys-devel/bison
"

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

REQUIRED_USE="
	pam? ( !skey )
	skey? ( !pam )
"

MAKEOPTS+=" SAMPLES="

src_prepare() {
	default
	elibtoolize
}

set_secure_path() {
	# FIXME: secure_path is a compile time setting. using PATH or
	# ROOTPATH is not perfect, env-update may invalidate this, but until it
	# is available as a sudoers setting this will have to do.
	einfo "Setting secure_path ..."

	# first extract the default ROOTPATH from build env
	SECURE_PATH=$(unset ROOTPATH; . "${EPREFIX}"/etc/profile.env;
		echo "${ROOTPATH}")
		case "${SECURE_PATH}" in
			*/usr/sbin*) ;;
			*) SECURE_PATH=$(unset PATH;
				. "${EPREFIX}"/etc/profile.env; echo "${PATH}")
				;;
		esac
	if [[ -z ${SECURE_PATH} ]] ; then
		ewarn "	Failed to detect SECURE_PATH, please report this"
	fi

	# then remove duplicate path entries
	cleanpath() {
		local newpath thisp IFS=:
		for thisp in $1 ; do
			if [[ :${newpath}: != *:${thisp}:* ]] ; then
				newpath+=:$thisp
			else
				einfo "   Duplicate entry ${thisp} removed..."
			fi
		done
		SECURE_PATH=${newpath#:}
	}
	cleanpath /bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin${SECURE_PATH:+:${SECURE_PATH}}

	# finally, strip gcc paths #136027
	rmpath() {
		local e newpath thisp IFS=:
		for thisp in ${SECURE_PATH} ; do
			for e ; do [[ $thisp == $e ]] && continue 2 ; done
			newpath+=:$thisp
		done
		SECURE_PATH=${newpath#:}
	}
	rmpath '*/gcc-bin/*' '*/gnat-gcc-bin/*' '*/gnat-gcc/*'

	einfo "... done"
}

src_configure() {
	local SECURE_PATH
	set_secure_path

	# audit: somebody got to explain me how I can test this before I
	# enable it.. - Diego
	# plugindir: autoconf code is crappy and does not delay evaluation
	# until `make` time, so we have to use a full path here rather than
	# basing off other values.
	myeconfargs=(
		--enable-zlib=system
		--enable-tmpfiles.d="${EPREFIX}"/usr/lib/tmpfiles.d
		--with-editor="${EPREFIX}"/usr/libexec/editor
		--with-env-editor
		--with-plugindir="${EPREFIX}"/usr/$(get_libdir)/sudo
		--with-rundir="${EPREFIX}"/run/sudo
		$(use_with secure-path secure-path ${SECURE_PATH})
		--with-secure-path="${SECURE_PATH}"
		--with-vardir="${EPREFIX}"/var/db/sudo
		--without-linux-audit
		--without-opie
		$(use_enable gcrypt)
		$(use_enable nls)
		$(use_enable sasl)
		$(use_with offensive insults)
		$(use_with offensive all-insults)
		$(use_with ldap ldap_conf_file /etc/ldap.conf.sudo)
		$(use_with ldap)
		$(use_with pam)
		$(use_with skey)
		$(use_with sssd)
		$(use_with selinux)
		$(use_with sendmail)
	)

	if use system-digest && ! use gcrypt; then
		myeconfargs+=("--enable-openssl")
	else
		myeconfargs+=("--disable-openssl")
	fi

	econf "${myeconfargs[@]}"
}

src_install() {
	default

	if use ldap ; then
		dodoc README.LDAP

		cat <<-EOF > "${T}"/ldap.conf.sudo
		# See ldap.conf(5) and README.LDAP for details
		# This file should only be readable by root

		# supported directives: host, port, ssl, ldap_version
		# uri, binddn, bindpw, sudoers_base, sudoers_debug
		# tls_{checkpeer,cacertfile,cacertdir,randfile,ciphers,cert,key}
		EOF

		insinto /etc
		doins "${T}"/ldap.conf.sudo
		fperms 0440 /etc/ldap.conf.sudo

		insinto /etc/openldap/schema
		newins doc/schema.OpenLDAP sudo.schema
	fi

	pamd_mimic system-auth sudo auth account session

	keepdir /var/db/sudo/lectured
	fperms 0700 /var/db/sudo/lectured
	fperms 0711 /var/db/sudo #652958

	# Don't install into /run as that is a tmpfs most of the time
	# (bug #504854)
	rm -rf "${ED%/}"/run
}

pkg_postinst() {
	tmpfiles_process sudo.conf

	#652958
	local sudo_db="${EROOT}/var/db/sudo"
	if [[ "$(stat -c %a "${sudo_db}")" -ne 711 ]] ; then
		chmod 711 "${sudo_db}" || die
	fi

	if use ldap ; then
		ewarn
		ewarn "sudo uses the /etc/ldap.conf.sudo file for ldap configuration."
		ewarn
		if grep -qs '^[[:space:]]*sudoers:' "${ROOT}"/etc/nsswitch.conf ; then
			ewarn "In 1.7 series, LDAP is no more consulted, unless explicitly"
			ewarn "configured in /etc/nsswitch.conf."
			ewarn
			ewarn "To make use of LDAP, add this line to your /etc/nsswitch.conf:"
			ewarn "  sudoers: ldap files"
			ewarn
		fi
	fi
	if use prefix ; then
		ewarn
		ewarn "To use sudo, you need to change file ownership and permissions"
		ewarn "with root privileges, as follows:"
		ewarn
		ewarn "  # chown root:root ${EPREFIX}/usr/bin/sudo"
		ewarn "  # chown root:root ${EPREFIX}/usr/lib/sudo/sudoers.so"
		ewarn "  # chown root:root ${EPREFIX}/etc/sudoers"
		ewarn "  # chown root:root ${EPREFIX}/etc/sudoers.d"
		ewarn "  # chown root:root ${EPREFIX}/var/db/sudo"
		ewarn "  # chmod 4111 ${EPREFIX}/usr/bin/sudo"
		ewarn
	fi

	elog "To use the -A (askpass) option, you need to install a compatible"
	elog "password program from the following list. Starred packages will"
	elog "automatically register for the use with sudo (but will not force"
	elog "the -A option):"
	elog ""
	elog " [*] net-misc/ssh-askpass-fullscreen"
	elog "     net-misc/x11-ssh-askpass"
	elog ""
	elog "You can override the choice by setting the SUDO_ASKPASS environmnent"
	elog "variable to the program you want to use."
}