remoting/host/installer/linux/debian/chrome-remote-desktop.init

   1 #!/bin/bash
   2
   3 ### BEGIN INIT INFO
   4 # Provides:             chrome-remote-desktop
   5 # Required-Start:       $remote_fs $syslog
   6 # Required-Stop:        $remote_fs $syslog
   7 # Default-Start:        2 3 4 5
   8 # Default-Stop:         0 1 6
   9 # Short-Description:    Chrome Remote Desktop service
  10 ### END INIT INFO
  11
  12 # /etc/init.d/chrome-remote-desktop: Start and stop Chrome Remote Desktop host daemon.
  13
  14 HOST_PATH=/opt/google/chrome-remote-desktop/chrome-remote-desktop
  15
  16 # Group of users for which Chrome Remote Desktop is enabled. Users are added
  17 # to that group when they start the host for the first time.
  18 CHROME_REMOTING_GROUP=chrome-remote-desktop
  19
  20 test -x $HOST_PATH || exit 0
  21
  22 . /lib/lsb/init-functions
  23
  24 if [ "$(whoami)" = "root" ]; then
  25   # Extract list of users in the chrome-remoting group.
  26   USERS=$(getent group $CHROME_REMOTING_GROUP |
  27           awk -F ':' '{ gsub(",", " ", $4); print $4 }')
  28 else
  29   USERS=$(whoami)
  30 fi
  31
  32 # Tries to wait for 10 seconds until specified command exits and then kills it.
  33 run_with_timeout() {
  34   "$@" &
  35   pid=$!
  36   local time_left=10
  37   while [ $time_left -gt 0 ]; do
  38     (kill -0 $pid 2>/dev/null) || return `wait $pid`
  39     sleep 1
  40     time_left=$((time_left - 1))
  41   done
  42   (kill -0 $pid 2>/dev/null) || return `wait $pid`
  43
  44   echo command \"$@\" has timed out >&2
  45   kill $pid
  46   return 1
  47 }
  48
  49 # Usage: run_and_ignore_error [--login] user program [args...]
  50 #   --login:
  51 #     Run program in a clean login shell. This requires backgrounding, since
  52 #     the user's .profile or .login script might be run, which might contain
  53 #     blocking commands.
  54 run_and_ignore_error() {
  55   login_options=""
  56   if [ "$1" = "--login" ]; then
  57     login_options="-b -i"
  58     shift
  59   fi
  60
  61   user=$1
  62   shift
  63
  64   set +e
  65   if [ "$(whoami)" = "$user" ]; then
  66     "$@"
  67   else
  68     sudo -u "$user" $login_options "$@"
  69   fi
  70 }
  71
  72 do_start() {
  73   log_begin_msg "Starting Chrome Remote Desktop host for $1..."
  74   run_and_ignore_error --login $1 "$HOST_PATH" --start
  75   log_end_msg $?
  76 }
  77
  78 do_stop() {
  79   log_begin_msg "Stopping Chrome Remote Desktop host for $1..."
  80   run_with_timeout run_and_ignore_error $1 "$HOST_PATH" --stop
  81   log_end_msg $?
  82 }
  83
  84 do_reload() {
  85   log_begin_msg "Reloading Chrome Remote Desktop host configuration for $1..."
  86   run_and_ignore_error $1 "$HOST_PATH" --reload
  87   log_end_msg $?
  88 }
  89
  90 do_restart() {
  91   log_begin_msg "Restarting Chrome Remote Desktop host for $1..."
  92   run_and_ignore_error $1 "$HOST_PATH" --stop
  93   run_and_ignore_error --login $1 "$HOST_PATH" --start
  94   log_end_msg $?
  95 }
  96
  97 for_each_user() {
  98   for user in $USERS; do
  99     $1 $user
 100   done
 101 }
 102
 103 case "$1" in
 104   start)
 105     for_each_user do_start
 106     ;;
 107
 108   stop)
 109     for_each_user do_stop
 110     ;;
 111
 112   reload|force-reload)
 113     for_each_user do_reload
 114     ;;
 115
 116   restart)
 117     for_each_user do_restart
 118     ;;
 119
 120   *)
 121     log_success_msg "Usage: /etc/init.d/chrome-remote-desktop" \
 122         "{start|stop|reload|force-reload|restart}"
 123     exit 1
 124 esac
 125
 126 exit 0