#!/bin/sh
#
# phpd - this script starts and stops the phpDaemon
#
### BEGIN INIT INFO
# Provides:          phpd
# Required-Start:    
# Required-Stop:     
# Should-Start:      
# Default-Start:     2 3 4 5
# Default-Stop:      
# Short-Description: php server process
# Description:       php daemon allows running of php scripts as daemon
#                    processes. Scripts can execute for days without problems
### END INIT INFO

set -e

# /etc/init.d/phpd: start and stop the php daemon

DAEMON=/opt/phpdaemon/bin/phpd
PHPD_CONF_FILE=/etc/phpdaemon/phpd.conf
PHPD_PID_FILE=/var/run/phpd.pid

test -x $DAEMON || exit 0
test -f $PHP_CONF_FILE || exit 0

. /lib/lsb/init-functions

phpd_start() {
	if start-stop-daemon --start  \
		--pidfile $PHPD_PID_FILE \
		--exec $DAEMON -- start
	then
		log_warning_msg "Starting the phpd daemon. start-stop-daemon return status: ${?}"
		rc=0
		sleep 1
		if ! kill -0 $(cat $PHPD_PID_FILE) >/dev/null 2>&1; then
			log_failure_msg "phpd daemon failed to start"
			rc=1
		fi
	else
		rc=1
	fi
	if [ $rc -eq 0 ]; then
		log_end_msg 0
	else
		log_end_msg 1
		rm -f $PHPD_PID_FILE
	fi
}

# Upgrade the binary with no downtime.
upgrade() {
	local pidfile="/var/run/${prog}.pid"
	local oldbin_pidfile="${pidfile}.oldbin"

	configtest_q || configtest || return 6
	echo -n $"Staring new master $prog: "
	killproc $phpd -USR2
	retval=$?
	echo
	sleep 1

	if [[ -f ${oldbin_pidfile} && -f ${pidfile} ]];  then
		echo -n $"Graceful shutdown of old $prog: "
		killproc -p ${oldbin_pidfile} -QUIT
		retval=$?
		echo
		return 0
	else
		echo $"Something bad happened, manual intervention required, maybe restart?"
		return 1
	fi
}

case "$1" in
	start)
		log_daemon_msg "Starting php daemon" "phpd"
		if [ -s $PHPD_PID_FILE ] && kill -0 $(cat $PHPD_PID_FILE) >/dev/null 2>&1; then
			log_progress_msg "apparently phpd is already running"
			log_end_msg 0
			exit 0
		fi
		phpd_start
		;;
	stop)
		log_daemon_msg "Stopping phpd daemon" "phpd"
		PHPD_MASTER_PID=$(cat $PHPD_PID_FILE)
		log_warning_msg "phpd master pid: ${PHPD_MASTER_PID}"
		for child_pid in `ps -o pid --no-headers --ppid $PHPD_MASTER_PID`
		do
			kill -9 $child_pid
			log_warning_msg "Killing phpd child with pid ${child_pid}"
		done
		start-stop-daemon --stop --quiet --oknodo --pidfile $PHPD_PID_FILE
		STARTSTOPKILL=$?
		log_end_msg $STARTSTOPKILL
		# make sure the main PHPD process is dead
		kill -9 $PHPD_MASTER_PID > /dev/null 2>&1
		rm -rf $PHPD_PID_FILE
		;;
	restart)
		log_daemon_msg "Restarting phpd daemon" "phpd"
		if [ -s $PHPD_PID_FILE ] && kill -0 $(cat $PHPD_PID_FILE) >/dev/null 2>&1; then
			start-stop-daemon --stop --quiet --oknodo --pidfile $PHPD_PID_FILE || true
			sleep 1
		else
			log_warning_msg "phpd daemon not running, attempting to start"
			rm -f $PHPD_PID_FILE
		fi
		phpd_start
		;;
	status)
		status_of_proc -p $PHPD_PID_FILE "$DAEMON" phpd
		exit $? # not reached due to set -e
		;;
	*)

	echo $"Usage: $0 {start|stop|status|restart}"
	exit 2
esac