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#!/sbin/openrc-run

# Copyright 1999-2017 Gentoo Foundation

# Distributed under the terms of the GNU General Public License v2

extra_started_commands="attach resume suspend"

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() {

	local sslcrt="/etc/ssl/certs/ca-certificates.crt"

	if [ ! -d "${RUNTIMEDIR}" ]; then

		einfo "Directory ${RUNTIMEDIR} does not exist, creating now."

		if ! mkdir -p "${RUNTIMEDIR}"; then

			eerror "Directory ${RUNTIMEDIR} could not be created!"

			return 1

		fi

		# ensure proper ownership

		if ! chown "${USER}:${GROUP}" "${RUNTIMEDIR}"; then

			eerror "Changing ownership of '${RUNTIMEDIR}' to '${USER}:${GROUP}' failed!"

			return 1

		fi

	fi

	if [ ! -e "${RUNTIMEDIR}"/ca-bundle.crt ]; then

		if [ ! -f "${sslcrt}" ]; then

			eerror "'${sslcrt}' does not exist!"

			return 1

		fi

		if ! ln -s "${sslcrt}" "${RUNTIMEDIR}"/ca-bundle.crt; then

			eerror "Symlinking '${sslcrt}' failed!"

			return 1

		fi

	fi

	return 0

}

fix_lib_symlinks() {

	local src="$1"

	local tgt="$2"

	# If the source does not exist, we can not do anything

	if [ ! -f "${src}" ] ; then

		return 1

	fi

	# Check whether the symlink is already there and in order

	if [ -L "${tgt}" ] ; then

		if [ -f "${tgt}" ] ; then

			return 0

		fi

		# Remove broken symlink

		if ! rm -f "${tgt}"; then

			eerror "Removing '${tgt}' failed!"

			return 1

		fi

	fi

	# symlink the correct path

	if ! ln -snf "${src}" "${tgt}"; then

		eerror "Symlinking '${src}' to '${tgt}' failed!"

		return 1

	fi

	return 0

}

cuda_check() {

	local libsource="/opt/cuda/lib/libcudart.so"

	local libtarget="${RUNTIMEDIR}/libcudart.so"

	fix_lib_symlinks "${libsource}" "${libtarget}" || return 1

	return 0

}

opencl_check() {

	local libsource="/usr/lib/libOpenCL.so"

	local libtarget="${RUNTIMEDIR}/libOpenCL.so"

	fix_lib_symlinks "${libsource}" "${libtarget}" || return 1

	return 0

}

env_check() {

	# Make sure the configuration is sane

	: ${USER:="boinc"}

	: ${GROUP:="boinc"}

	: ${RUNTIMEDIR:="/var/lib/boinc"}

	: ${BOINCBIN:="$(which boinc_client)"}

	: ${BOINC_PIDFILE:="/var/run/boinc_client.pid"}

	: ${BOINCCMD:="$(which /usr/bin/boinccmd)"}

	: ${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

	# The boinccmd is crucial, or we can not attach, suspend or resume

	# the boinc client

	if [ ! -x "${BOINCCMD}" ]; then

		eerror "No boinccmd program found!"

		return 1

	fi

	return 0

}

need_passwd_arg() {

	local vers=$(${BOINCBIN} --version | tr -d .)

	[ -z "${vers}" ] && vers="00"

	[ $(expr substr "${vers}" 1 2) -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 || einfo "CUDA not supported"

	opencl_check || einfo "OpenCL not supported"

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

	ebegin "Starting ${RC_SVCNAME}"

	start-stop-daemon --start --nicelevel ${NICELEVEL} \

		--user "${USER}:${GROUP}" --quiet --make-pidfile \

		--pidfile "${BOINC_PIDFILE}" --background \

		--exec "${BOINCBIN}" -- ${ARGS}

	eend $?

}

attach() {

	local password=""

	local url=""

	local key=""

	env_check || return 1

	einfo "If you can't 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 --user "${USER}:${GROUP}" --quiet \

		--chdir "${RUNTIMEDIR}" --exec "${BOINCCMD}" \

		-- ${password} --project_attach ${url} ${key}

	eend $?

	sleep 10

	tail "${RUNTIMEDIR}/stdoutdae.txt"

}

stop() {

	local password=""

	local stop_timeout="SIGTERM/60/SIGTERM/30/SIGKILL/30"

	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 --stop --quiet --progress \

		--retry ${stop_timeout} \

		--pidfile "${BOINC_PIDFILE}"

	eend $?

}

resume() {

	env_check || return 1

	local password=""

	if need_passwd_arg; then

		password="--passwd \"$(cat "${RUNTIMEDIR}/gui_rpc_auth.cfg")\""

	fi

	for url in $(cd "${RUNTIMEDIR}" ; \

		  "${BOINCCMD}" ${password} --get_project_status | \

		  sed -n 's/\s*master URL: //p'); do

		ebegin "Resuming ${url}"

		start-stop-daemon --user "${USER}:${GROUP}" --quiet \

			--chdir "${RUNTIMEDIR}" --exec "${BOINCCMD}" \

			-- ${password} --project ${url} resume

		eend $?

	done

}

suspend() {

	env_check || return 1

	local password=""

	if need_passwd_arg; then

		password="--passwd \"$(cat "${RUNTIMEDIR}/gui_rpc_auth.cfg")\""

	fi

	for url in $(cd "${RUNTIMEDIR}" ; \

		  "${BOINCCMD}" ${password} --get_project_status | \

		  sed -n 's/\s*master URL: //p'); do

		ebegin "Suspending ${url}"

		start-stop-daemon --user "${USER}:${GROUP}" --quiet \

			--chdir "${RUNTIMEDIR}" --exec "${BOINCCMD}" \

			-- ${password} --project ${url} suspend

		eend $?

	done