#! /bin/sh
#
# asterisk      start the asterisk PBX
# (c) Mark Purcell <msp@debian.org>
# May be distributed under the terms of this General Public License
#
# Based on:
#
# skeleton      example file to build /etc/init.d/ scripts.
#              This file should be used to construct scripts for /etc/init.d.
#
#              Written by Miquel van Smoorenburg <miquels@cistron.nl>.
#              Modified for Debian GNU/Linux
#              by Ian Murdock <imurdock@gnu.ai.mit.edu>.
#
# Version:      @(#)skeleton  1.9  26-Feb-2001  miquels@cistron.nl
#
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
NAME=asterisk
USER=$NAME
GROUP=$USER
DAEMON=/usr/sbin/$NAME
DESC="Asterisk PBX"
PIDFILE="/var/run/asterisk/asterisk.pid"
# by default: use real-time priority
PARAMS=""
AST_REALTIME="yes"
RUNASTERISK="no"
if [ -r /etc/default/$NAME ]; then . /etc/default/$NAME; fi
if [ "$RUNASTERISK" != "yes" ];then
        echo "Asterisk not yet configured. Edit /etc/default/asterisk first."
        exit 1
fi
if [ "$AST_REALTIME" != "no" ]
then
  PARAMS="$PARAMS -p"
fi
if [ "x$USER" = "x" ]
then
  echo "Error: empty USER name"
  exit 1
fi
if [ `id -u "$USER"` = 0 ]
then
  echo "Starting as root not supported."
  exit 1
fi
PARAMS="$PARAMS -U $USER"
if [ "x$AST_DEBUG_PARAMS" = x ]
then
  AST_DEBUG_PARAMS=-cvvvvvddddd
fi
if [ "$RUNASTSAFE" = "yes" ];then
        # The value of WRAPPER_DAEMON in can be set in /etc/default/asterisk
        WRAPPER_DAEMON=${WRAPPER_DAEMON:-/usr/sbin/safe_asterisk}
        REALDAEMON="$WRAPPER_DAEMON"
else
        REALDAEMON="$DAEMON"
fi
test -x $DAEMON || exit 0
set -e
status() {
        plist=`ps auxw | grep "$DAEMON" | grep -v grep | awk '{print $2}' | tr '\012' ' '`
        if [ "$plist" = "" ]; then
                echo "$DESC is stopped"
                return 1
        else
                echo "$DESC is running: $plist"
                return 0
        fi
}
case "$1" in
  debug)
        # we add too many special parameters that I don't want to skip
        # accidentally. I'm afraid that skipping -U once may cause
        # confusing results. I also want to maintain the user's choice
        # of -p
        echo "Debugging $DESC: "
        $DAEMON $PARAMS $AST_DEBUG_PARAMS
        exit 0
        ;;
  start)
        if status > /dev/null; then
                echo "$DESC is already running. Use restart."
                exit 1
        fi
        echo -n "Starting $DESC: "
        if [ "$RUNASTSAFE" != "yes" ];then
                # TODO: what if we cought the wrapper just as its asterisk
                # was killed? status should check for the wrapper if we're in
                # "safe mode"
                if status > /dev/null; then
                        echo "$DESC is already running. Use restart."
                        exit 1
                fi
        fi
        echo -n "Starting $DESC: "
        start-stop-daemon --start --group $GROUP --pidfile "$PIDFILE" \
                --exec $REALDAEMON -- $PARAMS
        echo "$NAME."
        ;;
  stop)
        echo -n "Stopping $DESC: "
        if [ "$RUNASTSAFE" = "yes" ];then
                # hopefully this will work. Untested
                $REALDAEMON -rx 'stop now' > /dev/null  || true
        else
                # Try gracefully.
                # this may hang in some cases. Specifically, when the asterisk
                # processes is stopped. No bother to worry about cleanup:
                # it will either fail or die when asterisk dies.
                ( $DAEMON -rx 'stop now' > /dev/null 2>&1 & ) &
        fi
        echo -n "$NAME"
        ## giving a small grace time to shut down cleanly.
        #sleep 2 # you can add timeouts in the comma
        if [ "$RUNASTSAFE" = "yes" ];then
                start-stop-daemon --quiet --oknodo --stop --exec $WRAPPER_DAEMON
        fi
        # just making sure it's really, really dead.
        # KILL is necessary just in case there's an asterisk -r in the background
        start-stop-daemon --stop --quiet --oknodo --retry=0/2/TERM/2/KILL/5 --exec $REALDAEMON
        echo "."
        ;;
  reload)
        echo "Reloading $DESC configuration files."
        $DAEMON -rx 'reload'
        ;;
  logger-reload)
        $DAEMON -rx 'logger reload'
        ;;
  extensions-reload)
        echo "Reloading $DESC configuration files."
        $DAEMON -rx 'extensions reload'
        ;;
  restart|force-reload)
        $0 stop
        $0 start
        ;;
  status)
        status
        exit $?
        ;;
  *)
        N=/etc/init.d/$NAME
        # echo "Usage: $N {start|stop|restart|reload|logger-reload|extensions-reload|force-reload}" >&2
        echo "Usage: $N {start|stop|status|debug|restart|force-reload}" >&2
        exit 1
        ;;
esac
exit 0