#!/sbin/runscript
# Simple transcription of the crashplan systemd init script
# Note that this script can be found in /opt/crashplan/bin/CrashPlanEngine
# in typical installs

extra_commands="checkconfig"
description="Starts the Code42 CrashPlan Daemon"
description_checkconfig="Verifies environment exists"

CRASHPLAN_DIR="/opt/crashplan"                                      # Typical installation directory
CRASHPLAN_IVARS="${CRASHPLAN_DIR}/install.vars"                     # Variables recorded by installation
CRASHPLAN_PIDFILE="/var/run/${SVCNAME}.pid"                         # Target location for current PID
CRASHPLAN_RCONF="${CRASHPLAN_DIR}/bin/run.conf"                     # Should be a config file
CRASHPLAN_DAEMON="${CRASHPLAN_DIR}/lib/com.backup42.desktop.jar"    # Jar containing relevant classes
CRASHPLAN_SERVICE="com.backup42.service.CPService"                  # Name of the service class
CRASHPLAN_FULL_CP="${CRASHPLAN_DAEMON}:${CRASHPLAN_DIR}/lang"       # Probably the java class path

# This function performs basic configuration checks
# If anything is missing or broken we can't start the process
checkconfig() {
    CRASHPLAN_RC=0

    # The installation directory for crashplan
    if [ ! -d $CRASHPLAN_DIR ] ; then
        eerror "CrashPlan does not exist at ${CRASHPLAN_DIR}"
        CRASHPLAN_RC=1
    fi

    # We need the daemon file
    if [ ! -e $CRASHPLAN_DAEMON ]; then
        eerror "${CRASHPLAN_DAEMON} is missing!"
    fi

    # Parameters needed for the run
    if [ -e $CRASHPLAN_RCONF ]; then
        . $CRASHPLAN_RCONF
    else
        eerror "${CRASHPLAN_RCONF} is missing!"
        CRASHPLAN_RC=1
    fi

    # Check to make sure install variable file exists
    if [ -e "${CRASHPLAN_IVARS}" ]; then
        . $CRASHPLAN_IVARS
    else
        eerror "${CRASHPLAN_IVARS} is missing!"
        CRASHPLAN_RC=1
    fi

    # We need a LANG variable to end up as <thing>.UTF-8
    # worst case we'll fall back to en_US.UTF-8
    if [ ${LANG} ]; then
        LOCALE=$(sed 's/\..*//g' <<< ${LANG})
        export LANG="${LOCALE}.UTF-8"
    else
        export LANG="en_US.UTF-8"
        ewarn "A valid local could not be extracted from \$LANG"
        ewarn "Defaulting in ${LANG}"
    fi

    return $CRASHPLAN_RC
}

# We need net to operate
# but it may be more sensible to list
# this as a start-after
depend() {
    need localmount
    use net
}

# Actual startup routine - depends on checkconfig
start() {
	ebegin "Starting ${SVCNAME}"
   
    checkconfig || eend 1
    
    start-stop-daemon --pidfile "${CRASHPLAN_PIDFILE}" \
        --make-pidfile --chdir "${CRASHPLAN_DIR}" \
        --stdout $CRASHPLAN_DIR/log/engine_output.log \
        --stderr $CRASHPLAN_DIR/log/engine_error.log \
        --nice 19 --start --background --progress \
        --exec $JAVACOMMON -- ${SRV_JAVA_OPTS} -classpath ${CRASHPLAN_FULL_CP} ${CRASHPLAN_SERVICE}

    eend $?
}

# Stop routine should attempt to kill via TERM, then KILL
stop() {
	ebegin "Stopping ${SVCNAME}"

    start-stop-daemon --pidfile "${CRASHPLAN_PIDFILE}" \
        --progress --stop $JAVACOMMON --retry SIGTERM/15 SIGKILL/5

	eend $?
}