asterisk

#!/bin/bash
# $Id$
#
# Mon Jun 04 2007 Iñaki Baz Castillo <ibc@in.ilimit.es>
# - Eliminated SAFE_ASTERISK since it doesn't work as LSB script (it could require a independent "safe_asterisk" init script).
# - Load and use the standar "/lib/lsb/init-functions".
# - Added "--oknodo" to "start-stop-daemon" for compatibility with LSB:
#   http://www.linux-foundation.org/spec/refspecs/LSB_3.0.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
#
# Thu Nov 17 2005 Gregory Boehnlein <damin@nacs.net>
# - Reversed behavior of LD_ASSUME_KERNEL=2.4.1
# - Added detailed failure messages
#
# Sun Jul 18 2004 Gregory Boehnlein <damin@nacs.net>
# - Added test for safe_asterisk
# - Changed "stop gracefully" to "stop now"
# - Added support for -U and -G command line options
# - Modified "reload" to call asterisk -rx 'reload' 
### BEGIN INIT INFO
# Provides:	  asterisk
# Required-Start: mysql
# Required-Stop:  mysql
### END INIT INFO

set -e

if ! [ -x $DAEMON ] ; then
    echo "ERROR: $DAEMON not found"
    exit 0
fi

if ! [ -d $ASTETCDIR ] ; then
    echo "ERROR: $ASTETCDIR directory not found"
    exit 0
fi

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
NAME=asterisk
DESC="Asterisk PBX"
# Full path to asterisk binary
DAEMON=/usr/sbin/asterisk
ASTVARRUNDIR=/var/run/asterisk
ASTETCDIR=/etc/asterisk
TRUE=/bin/true
PIDFILE=/var/run/asterisk/asterisk.pid

# Use the LSB standard functions for services management
. /lib/lsb/init-functions

# Allow configuration overrides in /etc/default/asterisk
CONFIGFILE=/etc/default/$NAME
[ -f $CONFIGFILE ] && . $CONFIGFILE

function stop {
    log_begin_msg "Stopping $DESC: $NAME"
    # "start-stop-daemon --oknodo" returns 0 even if Asterisk was already stopped (as LSB expects):
    start-stop-daemon --stop --oknodo --name $NAME --pidfile "$PIDFILE" -q
    log_end_msg $?
}

function start {
    # Check if Asterisk is already running.  If it is, then bug out, because
    # starting up Asterisk when Asterisk is already running is very bad.
    VERSION=`${DAEMON} -rx 'core show version' 2>/dev/null || ${TRUE}`
    if [ "`echo $VERSION | cut -c 1-8`" = "Asterisk" ]; then
	echo "Asterisk is already running.  $0 will exit now."
	exit 0
    fi

    log_begin_msg "Starting $DESC: $NAME"
    if [ ! -d $ASTVARRUNDIR ]; then
	mkdir -p $ASTVARRUNDIR
    fi
    if [ $AST_USER ] ; then
	ASTARGS="-U $AST_USER"
	chown $AST_USER $ASTVARRUNDIR
    fi
    if [ $AST_GROUP ] ; then
	ASTARGS="$ASTARGS -G $AST_GROUP"
	chgrp $AST_GROUP $ASTVARRUNDIR
    fi
    if [ $ALTCONF ]; then
	ASTARGS="$ASTARGS -C \"$ALTCONF\""
    fi
    if [ "x$COREDUMP" = "xyes" ]; then
	ASTARGS="$ASTARGS -g"
    fi
    if [ "0$MAXLOAD" -gt "0" ]; then
	ASTARGS="$ASTARGS -L $MAXLOAD"
    fi
    if [ "0$MAXCALLS" -gt "0" ]; then
	ASTARGS="$ASTARGS -M $MAXCALLS"
    fi
    if [ "0$VERBOSITY" -gt "0" ]; then
	for i in `seq 1 $VERBOSITY`; do
	    ASTARGS="$ASTARGS -v"
	done
	# -v implies -f, so we override that implicit specification here
	ASTARGS="$ASTARGS -F"
    fi
    if [ "x$INTERNALTIMING" = "xyes" ]; then
	ASTARGS="$ASTARGS -I"
    fi
    if [ "x$TEMPRECORDINGLOCATION" = "xyes" -o "x$TMPRECORDINGLOCATION" = "xyes" ]; then
	ASTARGS="$ASTARGS -t"
    fi
    if test "x$COLOR" = "xno" ; then
	ASTARGS="$ASTARGS -n"
    fi
    # "start-stop-daemon --oknodo" returns 0 even if Asterisk was already running (as LSB expects):
    start-stop-daemon --start --oknodo --pidfile "$PIDFILE" -q --exec $DAEMON -- $ASTARGS
    log_end_msg $?
}

case "$1" in
    start)
	start
	;;
    stop)
        stop
	;;
    reload)
	echo "Reloading $DESC configuration files."
	$DAEMON -rx 'module reload' > /dev/null 2> /dev/null
	;;
    restart|force-reload)
	stop
	sleep 2  # It needs some time to really be stopped.
	start
	# "restart|force-reload" starts Asterisk and returns 0 even if Asterisk was stopped (as LSB expects).
	;;
    status)
	start-stop-daemon --status --pidfile "$PIDFILE" --name "$name"
	exit $?
	;;
    *)
	echo "Usage: $0 {start|stop|restart|reload|force-reload|status}" >&2
	exit 1
	;;
esac