259 lines
No EOL
8.8 KiB
Bash
259 lines
No EOL
8.8 KiB
Bash
#!/bin/bash
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### BEGIN INIT INFO
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# Provides: adafruit_webide_node_debian_init
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# Required-Start: $remote_fs $named $syslog
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# Required-Stop: $remote_fs $named $syslog
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: DEBIAN initscript for Adafruit-WebIDE
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# Description: A web based IDE for remote development.
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### END INIT INFO
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# Credit to Peter Host (www.oghme.com) for the starting point of this script.
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# If you wish the Daemon to be lauched at boot / stopped at shutdown :
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# INSTALL : update-rc.d scriptname defaults
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# (UNINSTALL : update-rc.d -f scriptname remove)
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# Author: justin@adafruit.com
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# ______________________________________________________________________________
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PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/bin
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DAEMON_ARGS="/usr/share/adafruit/webide/server.js"
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DESC="Adafruit WebIDE server"
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NODEUSER=webide:webide
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LOCAL_VAR_RUN="/var/run"
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NAME=adafruit-webide
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DAEMON=$(which node)
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# Do NOT "set -e"
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[ $UID -eq "0" ] && LOCAL_VAR_RUN=/var/run # in case this script is run by root, override user setting
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THIS_ARG=$0
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INIT_SCRIPT_NAME=`basename $THIS_ARG`
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#[ -h $THIS_ARG ] && INIT_SCRIPT_NAME=`basename $(readlink $THIS_ARG)` # in case of symlink
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INIT_SCRIPT_NAME_NOEXT=${INIT_SCRIPT_NAME%.*}
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PIDFILE="$LOCAL_VAR_RUN/$INIT_SCRIPT_NAME_NOEXT.pid"
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SCRIPTNAME=/etc/init.d/$INIT_SCRIPT_NAME
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# Exit if the package is not installed
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[ -x "$DAEMON" ] || { echo "can't find Node.js ($DAEMON)" >&2; exit 0; }
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# Exit if the 'run' folder is not present
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[ -d "$LOCAL_VAR_RUN" ] || { echo "Directory $LOCAL_VAR_RUN does not exist. Modify the '$INIT_SCRIPT_NAME_NOEXT' init.d script ($THIS_ARG) accordingly" >&2; exit 0; }
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# Read configuration variable file if it is present
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[ -r /etc/default/$INIT_SCRIPT_NAME ] && . /etc/default/$INIT_SCRIPT_NAME
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# Load the VERBOSE setting and other rcS variables
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. /lib/init/vars.sh
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# Define LSB log_* functions.
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# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
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. /lib/lsb/init-functions
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pidchildtree() {
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local _pid=$1
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local _sig=${2-TERM}
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for _child in $(ps -o pid --no-headers --ppid ${_pid}); do
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pidchildtree ${_child} ${_sig}
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done
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#kill -${_sig} ${_pid}
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echo -n " "${_pid}
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}
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# uncomment to override system setting
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#VERBOSE=yes
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#
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# Function that starts the daemon/service
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#
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do_start()
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{
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# Return
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# 0 if daemon has been started
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# 1 if daemon was already running
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# 2 if daemon could not be started
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if [ -f $PIDFILE ]; then
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RUNIDS=$(pidchildtree `cat $PIDFILE`)
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[ "$RUNIDS" != "" ] && log_daemon_msg " ---> Daemon already running $DESC" "$INIT_SCRIPT_NAME_NOEXT"; return 1;
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fi
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# start-stop-daemon --start --quiet --pidfile $PIDFILE --chuid $NODEUSER --background --exec $DAEMON --test -- $DAEMON_ARGS > /dev/null \
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# || { [ "$VERBOSE" != no ] && log_daemon_msg " ---> Daemon already running $DESC" "$INIT_SCRIPT_NAME_NOEXT"; return 1; }
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setcap 'cap_net_bind_service=+ep' $DAEMON
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start-stop-daemon --start --quiet --chuid $NODEUSER --make-pidfile --pidfile $PIDFILE --background --exec $DAEMON -- \
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$DAEMON_ARGS \
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|| { [ "$VERBOSE" != no ] && log_daemon_msg " ---> could not be start $DESC" "$INIT_SCRIPT_NAME_NOEXT"; return 2; }
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# Add code here, if necessary, that waits for the process to be ready
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# to handle requests from services started subsequently which depend
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# on this one. As a last resort, sleep for some time.
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[ "$VERBOSE" != no ] && log_daemon_msg " ---> started $DESC" "$INIT_SCRIPT_NAME_NOEXT"
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}
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#
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# Function that stops the daemon/service
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#
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do_stop()
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{
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# Return
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# 0 if daemon has been stopped
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# 1 if daemon was already stopped
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# 2 if daemon could not be stopped
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# other if a failure occurred
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RETVAL=1
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if [ -f $PIDFILE ]; then
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#echo kill $(pidchildtree `cat $PIDFILE`)
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kill $(pidchildtree `cat $PIDFILE`) 2> /dev/null
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RETVAL="$?"
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fi
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##start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --chuid $NODEUSER ##--name $DAEMON
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###start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --chuid $NODEUSER --name $DAEMON
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#[ "$VERBOSE" != no ] && [ "$RETVAL" = 1 ] && log_daemon_msg " ---> SIGKILL failed => hardkill $DESC" "$INIT_SCRIPT_NAME_NOEXT"
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[ "$RETVAL" = 2 ] && return 2
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# Wait for children to finish too if this is a daemon that forks
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# and if the daemon is only ever run from this initscript.
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# If the above conditions are not satisfied then add some other code
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# that waits for the process to drop all resources that could be
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# needed by services started subsequently. A last resort is to
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# sleep for some time.
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start-stop-daemon --stop --quiet --oknodo --retry=0/3/KILL/5 --pidfile $PIDFILE --chuid $NODEUSER --exec $DAEMON -- $DAEMON_ARGS
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[ "$?" = 2 ] && return 2
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# Many daemons don't delete their pidfiles when they exit.
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rm -f $PIDFILE
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[ "$VERBOSE" != no ] && [ "$RETVAL" = 1 ] && log_daemon_msg " ---> $DESC not running" "$INIT_SCRIPT_NAME_NOEXT"
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[ "$VERBOSE" != no -a "$RETVAL" = 0 ] && log_daemon_msg " ---> $DESC stopped" "$INIT_SCRIPT_NAME_NOEXT"
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return "$RETVAL"
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}
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#
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# Function that sends a SIGHUP to the daemon/service
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#
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do_reload() {
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#
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# If the daemon can reload its configuration without
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# restarting (for example, when it is sent a SIGHUP),
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# then implement that here.
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#
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start-stop-daemon --stop --quiet --signal 1 --pidfile $PIDFILE --chuid $NODEUSER --name $NAME
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return 0
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}
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#
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# Function that returns the daemon
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#
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do_status() {
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#
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# http://refspecs.freestandards.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
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# 0 program is running or service is OK
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# 1 program is dead and /var/run pid file exists
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# (2 program is dead and /var/lock lock file exists) (not used here)
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# 3 program is not running
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# 4 program or service status is unknown
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RUNNING=$(running)
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#echo $RUNNING
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#echo pidof -x $NAME
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# $PIDFILE corresponds to a live $NAME process
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#ispidactive=$(pidof -x $NAME | grep `cat $PIDFILE 2>&1` >/dev/null 2>&1)
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ispidactive=$(pidof -x $DAEMON | grep `cat $PIDFILE 2>&1` >/dev/null 2>&1)
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ISPIDACTIVE=$?
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if [ -n "$RUNNING" ]; then
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if [ $ISPIDACTIVE ]; then
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log_success_msg "$INIT_SCRIPT_NAME_NOEXT (launched by $USER) (--chuid $NODEUSER) is running"
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exit 0
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fi
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else
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if [ -f $PIDFILE ]; then
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log_success_msg "$INIT_SCRIPT_NAME_NOEXT (launched by $USER) (--chuid $NODEUSER) is not running, phantom pidfile $PIDFILE"
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exit 1
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else
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log_success_msg "no instance launched by $USER, of $INIT_SCRIPT_NAME_NOEXT (--chuid $NODEUSER) found"
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exit 3
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fi
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fi
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}
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running() {
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if [ -f $PIDFILE ]; then
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RUNIDS=$(pidchildtree `cat $PIDFILE`)
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[ "$RUNIDS" != "" ] && echo y;
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fi
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# RUNSTAT=$(start-stop-daemon --start --quiet --pidfile $PIDFILE --chuid $NODEUSER --background --exec $DAEMON --test > /dev/null)
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# if [ "$?" = 1 ]; then
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# echo y
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# fi
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}
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case "$1" in
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start)
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[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$INIT_SCRIPT_NAME_NOEXT"
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do_start
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case "$?" in
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0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
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2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
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esac
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;;
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stop)
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[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$INIT_SCRIPT_NAME_NOEXT"
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do_stop
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case "$?" in
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0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
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2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
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esac
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;;
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#reload|force-reload)
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#
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# If do_reload() is not implemented then leave this commented out
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# and leave 'force-reload' as an alias for 'restart'.
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#
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#log_daemon_msg "Reloading $DESC" "$NAME"
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#do_reload
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#log_end_msg $?
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#;;
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restart|force-reload)
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#
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# If the "reload" option is implemented then remove the
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# 'force-reload' alias
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#
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log_daemon_msg "Restarting $DESC" "$INIT_SCRIPT_NAME_NOEXT"
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do_stop
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case "$?" in
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0|1)
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do_start
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case "$?" in
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0) log_end_msg 0 ;;
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1) log_end_msg 1 ;; # Old process is still running
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*) log_end_msg 1 ;; # Failed to start
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esac
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;;
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*)
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# Failed to stop
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log_end_msg 1
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;;
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esac
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;;
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status)
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do_status
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;;
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*)
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#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
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echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
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exit 3
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;;
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esac
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exit 0 |