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#!/sbin/openrc-run
# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

extra_started_commands="attach"


depend() {
	# we can use dns and net, but we can also in most cases live without them
	use dns net ntp-client ntpd
}


create_work_directory() {
	if [ ! -d "${RUNTIMEDIR}" ]; then
		einfo "Directory ${RUNTIMEDIR} does not exist, creating now."
		mkdir -p "${RUNTIMEDIR}"
		if [ ! -d "${RUNTIMEDIR}" ]; then
			eeror "Directory ${RUNTIMEDIR} could not be created!"
			return 1
		fi
	fi
	if [ ! -e "${RUNTIMEDIR}"/ca-bundle.crt ] ; then
		ln -s /etc/ssl/certs/ca-certificates.crt "${RUNTIMEDIR}"/ca-bundle.crt
	fi

	return 0
}


cuda_check() {
	if [ -f /opt/cuda/lib/libcudart.so ]; then
		# symlink wont harm :]
		ln -snf /opt/cuda/lib/libcudart.so "${RUNTIMEDIR}"/libcudart.so
	fi
}


env_check() {
	# Make sure the configuration is sane
	${USER:="boinc"}
	${GROUP:="boinc"}
	${RUNTIMEDIR:="/var/lib/boinc"}
	${BOINCBIN:="$(which boinc_client)"}
	${ALLOW_REMOTE_RPC:="yes"}
	${NICELEVEL:="19"}
	# ARGS is not checked, it could have been explicitly set
	# to be empty by the user.

	# If the client was not found (how?) something is seriously wrong
	if [ ! -x "$BOINCBIN" ] ; then
		eerror "No boinc_client found!"
		return 1
	fi

	return 0
}


need_passwd_arg() {
	local vers=$(${BOINCBIN} --version | cut -d '.' --output-delimiter='' -f 1,2)
	[ -z "$vers" ] && vers=0
	[ $vers -lt 74 ] && return 0

	# From version 7.4 on, the default is to read
	# gui_rpc_auth.cfg for the password.

	return 1
}


start_pre() {
	env_check || return 1
	create_work_directory || return 1
	cuda_check

	# always ensure proper ownership
	chown -R "${USER}:${GROUP}" "${RUNTIMEDIR}"

	if [ ! -f "${RUNTIMEDIR}/lockfile" ]; then
		einfo "File \"${RUNTIMEDIR}/lockfile\" does not exist, assuming first run."
		einfo "You need to setup an account on the BOINC project homepage beforehand!"
		einfo "Go to http://boinc.berkeley.edu/ and locate your project."
		einfo "Then either run ${RC_SERVICE} attach or connect with a gui client"
		einfo "and attach to a project with that."
		einfo ""
		ewarn "Note that for attaching to some project you need your network up and running."
		ewarn "network is needed only for jobs fetching afterwards"
	fi

	return 0
}


start() {
	if [ "${ALLOW_REMOTE_RPC}" = "yes" ]; then
		ARGS="${ARGS} --allow_remote_gui_rpc"
	fi

	ARGS="${ARGS} --daemon --dir "${RUNTIMEDIR}" --redirectio"

	ebegin "Starting ${RC_SVCNAME}"
	start-stop-daemon -S -N ${NICELEVEL} -u ${USER} -q -x "${BOINCBIN}" -- ${ARGS}
	eend $?
}


attach() {
	local password=""
	local url=""
	local key=""

	env_check || return 1

	einfo "If you cant find your account key just try to obtain it by using:"
	einfo "    boinccmd --passwd PASSWORD_FROM_GUI_RPC_AUTH --lookup_account URL EMAIL PASSWORD"

	printf "    Enter the Project URL: "
	read url
	printf "    Enter your Account Key: "
	read key

	if ! service_started; then
		"${RC_SERVICE}" start
	fi

	if need_passwd_arg; then
		password="--passwd \"$(cat "${RUNTIMEDIR}/gui_rpc_auth.cfg")\""
	fi

	ebegin "${RC_SVCNAME}: Attaching to project"
	start-stop-daemon -u ${USER} -q -d "${RUNTIMEDIR}" -x boinccmd -- ${password} --project_attach ${url} ${key}
	eend $?

	sleep 10
	tail "${RUNTIMEDIR}/stdoutdae.txt"
}

stop() {
	local password=""

	env_check || return 1

	if need_passwd_arg; then
		password="--passwd \"$(cat "${RUNTIMEDIR}/gui_rpc_auth.cfg")\""
	fi

	ebegin "Stopping ${RC_SVCNAME}"
	start-stop-daemon -u ${USER} -q -d "${RUNTIMEDIR}" -x boinccmd -- ${password} --quit
	eend $?
}