#!/bin/bash
#
# BlueButton open source conferencing system - http://www.bigbluebutton.org/
#
# Copyright (c) 2012 BigBlueButton Inc. and by respective authors (see below).
#
# This program is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free Software
# Foundation; either version 3.0 of the License, or (at your option) any later
# version.
#
# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
#
# Author(s):
#       Fred Dixon <ffdixon@bigbluebutton.org>
#	Sebastian Schneider <seb.sschneider@gmail.com>
#
# Changelog:
#   2009-10-18 FFD  Inital Version   
#   2009-11-05 FFD  Updated for 0.62   
#   2009-12-09 FFD  Updated for 0.63   
#   2009-12-11 FFD  Added ability to swtich conference servers   
#   2009-12-12 FFD  Added cleaning and watching of log files   
#   2010-01-05 FFD  Added zipping of log files   
#   2010-01-18 FFD  Added resetting of environment back to using packages   
#   2010-03-02 JRT  Added trunk checkout options / fixed bbb-apps instructions   
#   2010-04-02 FFD  Updated for 0.64   
#   2010-06-21 SEB  Cleaned up some code / Updated for 0.70
#   2010-06-25 SEB  Added ability to change the security salt
#   2010-06-30 SEB  Added some extra errorchecking
#   2010-07-06 SEB  Added more error checking and report messages
#   2010-09-15 FFD  Updates for 0.71-dev
#   2010-10-16 FFD  Updates for 0.71-beta
#   2010-11-06 FFD  Added logic to ensure red5 shuts down
#   2010-12-12 FFD  Fixed bug #778
#   2010-12-12 FFD  Added support for Intalio VM
#   2010-02-28 FFD  Fixed #834 
#   2011-06-26 FFD  Updates for 0.8
#   2012-01-14 FFD  Tsting the development environment for 0.8
#   2012-02-22 FFD  Updates to development environment
#   2012-04-27 FFD  Added sum of version numbers in --check
#   2013-02-03 FFD  Updated for changes to parameters for 0.81 in bigbluebutton-sip.properties
#   2013-11-07 FFD  Finished 0.81
#   2014-01-13 FFD  Working on updates for 0.9.0 
#   2014-03-10 GUG  Enable Webrtc
#   2015-03-12 FFD  Added start/stop of HTML5 server
#   2014-01-13 FFD  Working on updates for 1.0.0

#set -x
#set -e

PATH=$PATH:/sbin

FREESWITCH_INIT_D="/etc/init.d/bbb-freeswitch"
source /etc/bigbluebutton/bigbluebutton-release

#
# Figure out our environemtn
#

PLATFORM=ubuntu

RED5_DIR=/usr/share/red5

SERVLET_CONTAINER=tomcat7
SERVLET_LOGS=/var/lib/$SERVLET_CONTAINER/logs
SERVLET_DIR=/var/lib/$SERVLET_CONTAINER/webapps

if [ ! -f /usr/share/red5/webapps/bigbluebutton/WEB-INF/red5-web.xml ]; then
	echo "#"
	echo "# BigBlueButton does not appear to be installed.  Could not"
	echo "# locate:"
	echo "#"
	echo "# /usr/share/red5/webapps/bigbluebutton/WEB-INF/red5-web.xml"
	exit 1
fi

if [ ! -f /var/www/bigbluebutton/client/conf/config.xml ]; then
	echo "#"
	echo "# BigBlueButton does not appear to be installed.  Could not"
	echo "# locate:"
	echo "#"
	echo "# /usr/share/red5/webapps/bigbluebutton/WEB-INF/red5-web.xml"
	exit 1
fi

if cat /var/www/bigbluebutton/client/conf/config.xml | grep "ChatModule" | grep -q https; then
	PROTOCOL_HTTP=https
	PROTOCOL_RTMP=rtmp
else
	PROTOCOL_HTTP=http
	PROTOCOL_RTMP=rtmp
fi

#
# We're going to give ^bigbluebutton.web.logoutURL a default value so bbb-conf does not give a warning
#
if [ -f $SERVLET_DIR/bigbluebutton/WEB-INF/classes/bigbluebutton.properties ]; then
	if cat $SERVLET_DIR/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | grep -q ^bigbluebutton.web.logoutURL=$; then
		sudo sed -i s/^bigbluebutton.web.logoutURL=$/bigbluebutton.web.logoutURL=default/g $SERVLET_DIR/webapps/bigbluebutton/WEB-INF/classes/bigbluebutton.properties
	fi
fi

VOICE_CONFERENCE="bbb-voice-freeswitch.xml"

#
# Determine IP so it works on multilingual installations
#

if [[ `sudo ifconfig` == *venet0:0* ]]; then
	# IP detection for OpenVZ environment
	IP=$(ifconfig | grep -v '127.0.0.1' | grep -E "[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*" | tail -1 | cut -d: -f2 | awk '{ print $1}')
else
	# IP detection for regular environment
	IP=$(ifconfig | grep -v '127.0.0.1' | grep -E "[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*" | head -1 | cut -d: -f2 | awk '{ print $1}')
fi

MEM=`free -m | grep Mem | awk '{ print $2}'`


#
# Check if the function has a value and, if not, print an error message
# $1 -- name of value
# $2 -- loctation of value
# $3 -- value to check
#
check_no_value() {
	if [ -z $3 ]; then
		echo "# Tried to check $1 in"
		echo "#    $2"
		echo "# but value is empty."
		exit 1
	fi
}

check_file() {
	if [ ! -f $1 ]; then
		echo "# File does not exist: $1"
	fi
}

print_header() {
	if [ ! $HEADER ]; then
		echo
		echo "** Potential problems described below **"
		HEADER=1
	fi
}

check_root() {
	if [ $EUID == 0 ]; then
		echo "This operation should not be run as root."
		echo 
		echo "If this operation needs to execute an operation as root, you'll be asked for"
		echo "your password to execute the operation using sudo."
		exit 1
	fi
}

need_root() {
	if [ $EUID != 0 ]; then
		echo "Need to be root to run this option"
		exit 1
	fi
}



usage() {
	echo "BigBlueButton Configuration Utility - Version $BIGBLUEBUTTON_RELEASE"
        echo
        echo "   bbb-conf [options]"
        echo
        echo "Configuration:"
        echo "   --version                        Display BigBlueButton version (packages)"
        echo "   --setip <host>                   Set IP/hostname for BigBlueButton"
	echo "   --setsecret <secret>             Change the shared secret in bigbluebutton.properties"
        echo
        echo "Monitoring:"
        echo "   --check                          Check configuration files and processes for problems"
        echo "   --debug                          Scan the log files for error messages"
        echo "   --watch                          Scan the log files for error messages every 2 seconds"
        echo "   --secret                         View the URL and shared secret for the server"
        echo "   --lti                            View the URL and secret for LTI (if installed)"
        echo
        echo "Administration:"
        echo "   --restart                        Restart BigBlueButton"
        echo "   --stop                           Stop BigBlueButton"
        echo "   --start                          Start BigBlueButton"
        echo "   --clean                          Restart and clean all log files"
        echo "   --zip                            Zip up log files for reporting an error"
        echo
        echo "Testing:"
        echo "   --enablewebrtc                   Enables WebRTC audio in the server"
        echo "   --disablewebrtc                  Disables WebRTC audio in the server"

        echo
}

# utility function to make a copy of the conf file
check_and_backup () {
	# can we write to the configuration file?
	if [ ! -w $1 ]; then
		echo "Cannot write to $1!"
		exit 1
	fi

	# let's see if we need a copy
	if [ "$TO_BACKUP" = "Y" ]; then
		cp $1 $1.bak
		TO_BACKUP="N"
	fi
}

# 3 paramenter: the file, the variable name, the new value
change_var_value () {
	check_and_backup $1
	sed -i "s<^[[:blank:]#]*\(${2}\).*<\1=\"${3}\"<" $1
}

change_var_ip () {
        check_and_backup $1
        sed -i "s<^[[:blank:]#]*\(${2}\).*<\1=${3}<" $1
}

# same as change_var_value but without quotes
change_var_salt() {
	check_and_backup $1
	sed -i "s<^[[:blank:]#]*\(${2}\).*<\1="${3}"<" $1
}

# comment lines matching $2 ($1 is the file)
comment () {
	check_and_backup $1
	sed -i "s<^[[:blank:]]*\(${2}.*\)<#\1<" $1
}

change_yml_value () {
        sed -i "s<^[[:blank:]#]*\(${2}\):[ ].*<\1: ${3}<" $1
}

# comment lines matching $2 ($1 is the file)
uncomment () {
	check_and_backup $1
	sed -i "s<^[#[:blank:]]*\(${2}.*\)<\1<" $1
}

stop_bigbluebutton () {
	/etc/init.d/monit stop

	if [ -f /etc/init/bbb-html5.conf ]; then
		stop bbb-html5
	fi

	/etc/init.d/bbb-red5 stop
	/etc/init.d/${SERVLET_CONTAINER} stop
	/etc/init.d/nginx stop
        
	if [ -a /opt/freeswitch/run/freeswitch.pid ]; then
		$FREESWITCH_INIT_D stop
	fi
        
	if [ -f /etc/init.d/bbb-office ]; then
		/etc/init.d/bbb-office stop
	fi

	if [ -f /etc/init.d/bbb-record-core ]; then
		/etc/init.d/bbb-record-core stop
	fi

	if [ -f /etc/init/bbb-apps-akka.conf ]; then
        	service bbb-apps-akka stop
	fi
	if [ -f /etc/init/bbb-fsesl-akka.conf ]; then
        	service bbb-fsesl-akka stop
	fi
}

start_bigbluebutton () {
	$FREESWITCH_INIT_D start
	
	FREESWITCH_ESL_IP=$(sudo cat /opt/freeswitch/conf/autoload_configs/event_socket.conf.xml | grep 'name="listen-ip"' | cut -d\" -f4  | awk '{print $1}')
	check_no_value listen-ip /opt/freeswitch/conf/autoload_configs/event_socket.conf.xml $FREESWITCH_ESL_IP

	echo -n "Waiting for FreeSWITCH to start: "

	if [ ! -z $FREESWITCH_ESL_IP ]; then
		while ! nc -z -w 1 $FREESWITCH_ESL_IP 8021; do
			echo -n "."
			sleep 1
		done
	fi
	echo

	/etc/init.d/nginx start
	/etc/init.d/bbb-red5 start
	/etc/init.d/${SERVLET_CONTAINER} start

	# monit will start libreoffice and bbb-rap-worker
	/etc/init.d/monit start
	echo
	echo "Note: monit will automatically start bbb-record-core and LibreOffice within 60 seconds."
	echo

	BBB_WEB=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | sed -n '/^bigbluebutton.web.serverURL/{s/.*\///;p}')
	if [ -f /etc/init/bbb-html5.conf ]; then
		echo -n "Waiting for Meteor (HTML5 server) to finish starting up (this may take a minute): "
		start bbb-html5

        	if ! wget -q -O - http://$BBB_WEB/html5client/check | grep running > /dev/null; then
                    while ! wget -q -O - http://$BBB_WEB/html5client/check | grep running > /dev/null; do
                        echo -n "."
                        sleep 1
                    done
		fi
        fi

	if [ -f /etc/init/bbb-apps-akka.conf ]; then
        	service bbb-apps-akka start
	fi
	if [ -f /etc/init/bbb-fsesl-akka.conf ]; then
        	service bbb-fsesl-akka start
	fi

	#
	# At this point the red5 and servlet container applications are starting up.
	#
	echo -n "Waiting for BigBlueButton to finish starting up (this may take a minute): "

	NGINX_IP=$(cat /etc/nginx/sites-available/bigbluebutton | sed -n '/server_name/{s/.*name[ ]*//;s/;//;p}' | cut -d' ' -f1)
	check_no_value server_name /etc/nginx/sites-available/bigbluebutton $NGINX_IP

        if ! nc -z -w 1 127.0.0.1 9123; then
                while ! nc -z -w 1 127.0.0.1 9123; do
                        echo -n "."
                        sleep 1
                done
        fi

	sleep 2

        if ! wget http://$BBB_WEB/bigbluebutton/api -O - --quiet | grep -q SUCCESS; then
                echo "Startup unsuccessful: could not connect to http://$BBB_WEB/bigbluebutton/api"
                exit 1
	fi

        echo " done"
}

display_bigbluebutton_status () {
	/etc/init.d/nginx status
	/etc/init.d/bbb-red5 status
	/etc/init.d/${SERVLET_CONTAINER} status
}

enable_webrtc(){
	# Set server ip address in FreeSWITCH
	sed -i "s@<X-PRE-PROCESS cmd=\"set\" data=\"local_ip_v4=.*\"/>@<X-PRE-PROCESS cmd=\"set\" data=\"local_ip_v4=$IP\"/>@g"  /opt/freeswitch/conf/vars.xml

	# Set server ip address in red5 sip app. For flash client.
	sed -i "s/bbb.sip.app.ip=.*/bbb.sip.app.ip=$IP/g" /usr/share/red5/webapps/sip/WEB-INF/bigbluebutton-sip.properties
	sed -i "s/freeswitch.ip=.*/freeswitch.ip=$IP/g" /usr/share/red5/webapps/sip/WEB-INF/bigbluebutton-sip.properties

	# Enable WebRTC in the client
	sed -i "s@useWebRTCIfAvailable=\".*\"@useWebRTCIfAvailable=\"true\"@g" /var/www/bigbluebutton/client/conf/config.xml

	# Enable port 5066 in FreeSWITCH
	sed -i 's/^.*<!--<param name="ws-binding"  value=":5066"\/>-->.*$/\t<param name="ws-binding"  value=":5066"\/>/g' /opt/freeswitch/conf/sip_profiles/external.xml

        sed -i "s/proxy_pass .*/proxy_pass http:\/\/$IP:5066;/g" /etc/bigbluebutton/nginx/sip.nginx

	echo 
	echo "WebRTC audio enabled.  To apply settings to your server, do"
	echo 
	echo "   sudo bbb-conf --clean"
	echo 
}

disable_webrtc(){
	# Set 127.0.0.1 in FreeSWITCH
	sed -i "s@<X-PRE-PROCESS cmd=\"set\" data=\"local_ip_v4=.*\"/>@<X-PRE-PROCESS cmd=\"set\" data=\"local_ip_v4=127.0.0.1\"/>@g"  /opt/freeswitch/conf/vars.xml

	# Set 127.0.0.1 in red5 sip app. For flash client.
	sed -i "s/bbb.sip.app.ip=.*/bbb.sip.app.ip=127.0.0.1/g" /usr/share/red5/webapps/sip/WEB-INF/bigbluebutton-sip.properties
	sed -i "s/freeswitch.ip=.*/freeswitch.ip=127.0.0.1/g" /usr/share/red5/webapps/sip/WEB-INF/bigbluebutton-sip.properties

	# Disable WebRTC in the client
        sed -i "s@useWebRTCIfAvailable=\".*\"@useWebRTCIfAvailable=\"false\"@g" /var/www/bigbluebutton/client/conf/config.xml

	# Disable port 5066 in FreeSWITCH
	sed -i 's/^.*<param name="ws-binding"  value=":5066"\/>.*$/\t<!--<param name="ws-binding"  value=":5066"\/>-->/g' /opt/freeswitch/conf/sip_profiles/external.xml

        sed -i "s/proxy_pass .*/proxy_pass http:\/\/127.0.0.1:5066;/g" /etc/bigbluebutton/nginx/sip.nginx

	echo 
	echo "WebRTC audio disabled.  To apply settings to your server, do"
	echo 
	echo "   sudo bbb-conf --clean"
	echo 
}


if [ $# -eq 0 ]; then
	usage
	exit 1
fi

# Parse the parameters
while [ $# -gt 0 ]; do
	if [ "$1" = "-stop" -o "$1" = "--stop" ]; then
		stop_bigbluebutton
		exit 0
	fi

	if [ "$1" = "-start" -o "$1" = "--start" ]; then
		start_bigbluebutton
		exit 0
	fi

	if [ "$1" = "-check" -o "$1" = "--check" -o "$1" = "-c" ]; then
		CHECK=1
		shift;shift 
		continue
	fi

	if [ "$1" = "--setup-samba" -o "$1" = "-setup-samba" ]; then
		SAMBA=1
		shift
		continue
	fi		

	if [ "$1" = "--version" -o "$1" = "-version" -o "$1" = "-v" ]; then
		VERSION=1
		shift
		continue
	fi		

	if [ "$1" = "--debug" -o "$1" = "-debug" -o "$1" = "-d" ]; then
		DEBUG=1
		shift
		continue
	fi

	if [ "$1" = "--clean" -o "$1" = "-clean" ]; then
		CLEAN=1
		shift
		continue
	fi

	if [ "$1" = "--watch" -o "$1" = "-watch" -o "$1" = "-w" ]; then
		WATCH=1
		shift
		continue
	fi

	if [ "$1" = "--network" -o "$1" = "-network" -o "$1" = "-n" ]; then
		NETWORK=1
		shift
		continue
	fi

	if [ "$1" = "--zip" -o "$1" = "-zip" -o "$1" = "-z" ]; then
		ZIP=1
		shift
		continue
	fi

	if [ "$1" = "--restart" -o "$1" = "-restart" ]; then
                RESTART=1
                shift
                continue
        fi

	if [ "$1" = "--enablewebrtc" -o "$1" = "-enablewebrtc" ]; then
		need_root
		enable_webrtc
		exit 0
        fi

	if [ "$1" = "--disablewebrtc" -o "$1" = "-disablewebrtc" ]; then
		need_root
		disable_webrtc
		exit 0
        fi

	#
	# all other parameters requires at least 1 argument
	#
	
	if [ "$1" = "-setip" -o "$1" = "--setip" ]; then
		HOST="${2}"
		if [ -z "$HOST" ]; then
			echo "HOST IP=$IP"
		fi

		if echo $HOST|grep -q ":"; then
			HOST=`echo ${2}|cut -d: -f1`
		fi
		shift; shift
		continue
	fi		
	
	if [ "$1" = "--salt" -o "$1" = "-salt" -o "$1" = "--setsalt" ]; then
		SALT="${2}"
		if [ -z "$SALT" ]; then
			BBB_WEB=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | sed -n '/^bigbluebutton.web.serverURL/{s/.*\///;p}')
			SALT=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | grep securitySalt | cut -d= -f2);
			echo
			echo "       URL: http://$BBB_WEB/bigbluebutton/"
			echo "      Salt: $SALT"
			echo
			exit 0
		fi
		shift; shift
		continue
	fi

	if [ "$1" = "--secret" -o "$1" = "-secret"  -o "$1" = "--setsecret" ]; then
		SALT="${2}"
		if [ -z "$SALT" ]; then
			BBB_WEB=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | sed -n '/^bigbluebutton.web.serverURL/{s/.*\///;p}')
			SALT=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | grep securitySalt | cut -d= -f2);
			echo
			echo "       URL: http://$BBB_WEB/bigbluebutton/"
			echo "    Secret: $SALT"
			echo
			exit 0
		fi
		shift; shift
		continue
	fi

	if [ "$1" = "--lti" -o "$1" = "-lti" ]; then
		if [ -z "$SALT" ]; then
			if [ -f ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties ]; then
				LTI_URL='http://'$(cat ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties | sed -n '/^ltiEndPoint/{s/^.*=//;p}')'/lti/tool'
				CUSTOMER=$(cat ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties | sed -n '/^ltiConsumer/{s/^.*=//;s/:.*//p}')
				SECRET=$(cat ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties | sed -n '/^ltiConsumer/{s/^[^:]*://;p}')
				echo
				echo "       URL: $LTI_URL"
				echo "  Customer: $CUSTOMER"
				echo "    Secret: $SECRET"
				echo
				ICON_URL=$( echo $LTI_URL | sed 's/tool/images\/icon.ico/')
				echo "  Icon URL: $ICON_URL"
				echo
				echo
				exit 0
			fi
		fi
		shift; shift
		continue
	fi

	usage 
	exit 1
done


#
# Version 
#
if [ $VERSION ]; then
	echo 
	dpkg -l | grep bbb
	exit 0
fi


#
# Set Security Salt
# - Legacy
#

if [ $SALT ]; then
	need_root
	change_var_salt ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties securitySalt $SALT

	if [ -f /usr/local/bigbluebutton/bbb-webhooks/config_local.coffee ]; then
		sed -i "s|\(^[ \t]*config.bbb.sharedSecret[ =]*\).*|\1\"$SALT\"|g" /usr/local/bigbluebutton/bbb-webhooks/config_local.coffee
	fi

	if [ -f /usr/local/bigbluebutton/bbb-webhooks/extra/post_catcher.js ]; then
		sed -i "s|\(^[ \t]*var shared_secret[ =]*\)[^;]*|\1\"$SALT\"|g" /usr/local/bigbluebutton/bbb-webhooks/extra/post_catcher.js
	fi

	change_var_salt ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties securitySalt $SALT
	echo "Changed BigBlueButton's shared secret to $SALT"
	echo
fi

#
# Setup samba
#

if [ $SAMBA ]; then
	check_root

        #
        # Instal Samba
        #
        if ! dpkg-query -s samba > /dev/null 2>&1; then
                sudo apt-get install -y --force-yes samba ant
        fi

        #
        # Add a share to samba
        #
        if ! grep -q $USER /etc/samba/smb.conf; then

                echo ";
; BigBlueButton: Share the development directory
[$USER]
   comment = BigBlueButton Development share
   path = /home/$USER
   browseable = yes
   read only = no
   create mask = 0755
   directory mask = 0775
   guest ok = yes
   force user = $USER
" | sudo tee -a /etc/samba/smb.conf > /dev/null 2>&1

                sudo /etc/init.d/smbd restart

        echo "
You can now access your development folder through:

        \\\\${IP}\\$USER

If you are running a development environment on Windows (such as using Eclipse or FlexBuilder),
you can map the above path to a drive letter.
"
        else
                echo "Already detected a definition for $USER in /etc/samba/smb.conf"
                echo "No changes were made to /etc/samba/smb.conf"
        fi
fi


check_configuration() {
	#
	# Check if we've got the voice conference servers properly installed and configured
	#
       if [ ! -d /opt/freeswitch/conf/jingle_profiles ]; then
		echo
		echo "# You have an older version of FreeSWITCH installed.  To upgrade"
		echo "# enter the following commands"
		echo "# "
		echo "#   sudo apt-get remove bbb-freeswitch"
		echo "#   sudo apt-get install bigbluebutton"
		echo "# "
		echo
	fi


	#
	# Check that freeswtich ESL matches the value in bigbluebutton.properties
	#
	if [ -f /opt/freeswitch/conf/autoload_configs/event_socket.conf.xml ]; then 
		FREESWITCH_ESL_IP=$(sudo cat /opt/freeswitch/conf/autoload_configs/event_socket.conf.xml | grep 'name="listen-ip"' | cut -d\" -f4  | awk '{print $1}')
		check_no_value event_socket /opt/freeswitch/conf/autoload_configs/event_socket.conf.xml $FREESWITCH_ESL_IP

		ESL_HOST=$(cat /usr/share/red5/webapps/bigbluebutton/WEB-INF/bigbluebutton.properties | grep esl.host | sed 's/freeswitch.esl.host=//g')
		check_no_value esl.host /usr/share/red5/webapps/bigbluebutton/WEB-INF/bigbluebutton.properties $ESL_HOST

		if [ "$FREESWITCH_ESL_IP" != "$ESL_HOST" ]; then
			echo 
			echo "# The values for listen-ip in   "
			echo "#     /opt/freeswitch/conf/autoload_configs/event_socket.conf.xml"
			echo "# do not match the settings for esl.host in"
			echo "#     /usr/share/red5/webapps/bigbluebutton/WEB-INF/bigbluebutton.properties"
			echo 
		fi
	fi


	#
	# Check if BigBlueButto is defined in Nginx
	#
	if [ ! -L /etc/nginx/sites-enabled/bigbluebutton ]; then
        	echo "# Nginx: BigBlueButton appears to be disabled"
        	echo "         - no symbolic link in /etc/nginx/sites-enabled/bigbluebutton to /etc/nginx/sites-available/bigbluebutton "
	fi
	
	#
	# Look for properties with no values set
	#
	CONFIG_FILES="$RED5_DIR/webapps/bigbluebutton/WEB-INF/bigbluebutton.properties \
	${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties \
	$RED5_DIR/webapps/sip/WEB-INF/bigbluebutton-sip.properties"

	for file in $CONFIG_FILES ; do
	 	if [ ! -f $file ]; then	
		 	echo "# Error: File not found: $file"
		else
                        if cat $file | grep -v redis.pass | grep -q "^[^=]*=[ ]*$"; then
        			echo "# The following properties in $file have no value:"
        			echo "#     $(grep '^[^=#]*=[ ]*$' $file | sed 's/=//g')"
			fi
		fi
	done

	#
	# Check that the supporting applications are installed
	#
	VARFolder=$(cat $SERVLET_DIR/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | grep swfToolsDir | cut -d= -f2)
	files="pdf2swf jpeg2swf png2swf"
	for file in $package; do
		if [ ! -x $VARFolder/$file ]; then
			echo "# $file is not installed in $VARFolder"
		fi
	done

	VARFolder=$(cat $SERVLET_DIR/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | grep imageMagickDir | cut -d= -f2)
	if [ ! -x $VARFolder/convert ]; then
			echo "# ImageMagick's convert is not installed in $VARFolder"
	fi

	VARFolder=$(cat $SERVLET_DIR/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | grep ghostScriptExec | cut -d= -f2)
	if [ ! -x $VARFolder ]; then
			echo "# Ghostscript is not installd in $VARFolder"
	fi

	#
	# Check if the IP resolves to a different host
	#
 	NGINX_IP=$(cat /etc/nginx/sites-available/bigbluebutton | sed -n '/server_name/{s/.*name[ ]*//;s/;//;p}' | cut -d' ' -f1)
 	check_no_value server_name /etc/nginx/sites-available/bigbluebutton $NGINX_IP
 	
	HOSTS=$(which host)
	if [ $HOSTS ]; then
		HOSTS=`$HOSTS $NGINX_IP | awk '{ print $4 }'`
	fi

	if [ "$IP" != "$NGINX_IP" ]; then
		if [ "$IP" != "$HOSTS" ]; then
			echo "# IP does not match:"
			echo "#                           IP from ifconfig: $IP"
			echo "#   /etc/nginx/sites-available/bigbluebutton: $NGINX_IP"
		fi
	fi


	if [ -f ${SERVLET_DIR}/demo/bbb_api_conf.jsp ]; then	
		#
		# Make sure the salt for the API matches the server
		#
		SALT_PROPERTIES=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | tr -d '\r' | sed -n '/securitySalt/{s/.*=//;p}')
		SALT_DEMO=$(cat ${SERVLET_DIR}/demo/bbb_api_conf.jsp | tr -d '\r' | sed -n '/salt[ ]*=/{s/.*=[ ]*"//;s/".*//g;p}')

		if [ "$SALT_PROPERTIES" != "$SALT_DEMO" ]; then
			echo "# Warning: API Salt mismatch: "
			echo "#  ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties  = $SALT_PROPERTIES"
			echo "#  ${SERVLET_DIR}/demo/bbb_api_conf.jsp                                   = $SALT_DEMO"
			echo 
		fi

		API_IP=$(cat ${SERVLET_DIR}/demo/bbb_api_conf.jsp  | sed -n '/String BigBlueButtonURL/{s/.*http:\/\///;s/\/.*//;p}' | tr -d '\015')
		if [ "$IP" != "$API_IP" ]; then
			echo "# Warning: API URL IPs do not match host:"
			echo "#"
			echo "#                                IP from ifconfig: $IP"
			echo "#  ${SERVLET_DIR}/demo/bbb_api_conf.jsp: $API_IP"
			echo
		fi
	fi

	BBB_SALT=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | tr -d '\r' | sed -n '/securitySalt/{s/.*=//;p}')
	NGINX_IP=$(cat /etc/nginx/sites-available/bigbluebutton | sed -n '/server_name/{s/.*name[ ]*//;s/;//;p}' | cut -d' ' -f1)

	if [ -f /usr/local/bigbluebutton/bbb-webhooks/config_local.coffee ]; then
		WEBHOOKS_SALT=$(cat /usr/local/bigbluebutton/bbb-webhooks/config_local.coffee | grep '^[ \t]*config.bbb.sharedSecret[ =]*' | cut -d '"' -f2)
		
		if [ "$BBB_SALT" != "$WEBHOOKS_SALT" ]; then
			echo "# Warning: Webhooks API Salt mismatch: "
			echo "#  ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties = $BBB_SALT"
			echo "#  /usr/local/bigbluebutton/bbb-webhooks/config_local.coffee                       = $WEBHOOKS_SALT"
			echo
		fi
		
		WEBHOOKS_PROXY_PORT=$(cat /etc/bigbluebutton/nginx/webhooks.nginx | grep '^[ \t]*proxy_pass[ \t]*' | sed 's|.*http[s]\?://[^:]*:\([^;]*\);.*|\1|g')
		WEBHOOKS_APP_PORT=$(cat /usr/local/bigbluebutton/bbb-webhooks/config_local.coffee | grep '^[ \t]*config.server.port[ =]*' | cut -d '=' -f2 | xargs)

		if [ "$WEBHOOKS_PROXY_PORT" != "$WEBHOOKS_APP_PORT" ]; then
			echo "# Warning: Webhooks port mismatch: "
			echo "#  /etc/bigbluebutton/nginx/webhooks.nginx                   = $WEBHOOKS_PROXY_PORT"
			echo "#  /usr/local/bigbluebutton/bbb-webhooks/config_local.coffee = $WEBHOOKS_APP_PORT"
			echo
		fi
	fi

	if [ -f ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties ]; then
                LTI_SALT=$(cat ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties | tr -d '\r' | sed -n '/^bigbluebuttonSalt/{s/.*=//;p}')
                BBB_SALT=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | tr -d '\r' | sed -n '/securitySalt/{s/.*=//;p}')

		if [ "$LTI_SALT" != "$BBB_SALT" ]; then
			echo "# Warning: LTI shared secret (salt) mismatch:"
			echo "#  ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties                      = $LTI_SALT"
			echo "#  ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties  = $BBB_SALT"
			echo 
		fi
	fi

        libreoffice_version=`dpkg-query -W --showformat='${Version}\n' libreoffice | sed 's/.*://g' | sed 's/\.[^\.]*$//g'`

        if [[ "$libreoffice_version" > 1.0 ]]; then
            if [[ "$libreoffice_version" < 4.4 ]]; then
                echo "# Warning: Detected your running an older version of LibreOffice: $libreoffice_version"
                echo "#"
                echo "# Recommend updated to the latest version of LibreOffice 4.x (4.4 or later)"
                echo
            fi
        fi

}


check_state() {
	echo 
	print_header
	check_configuration

	#
	# Check for potential problems in the BigBlueButton configuration
	#

	RUNNING_APPS=""
	NOT_RUNNING_APPS=""

	if ! ps aux | grep -v grep | grep 'org.red5.server.Bootstrap' > /dev/null; then
		print_header
		NOT_RUNNING_APPS="${NOT_RUNNING_APPS} red5"
	else
		RUNNING_APPS="${RUNNING_APPS} red5"
	fi	

	if [ -a /opt/freeswitch/run/freeswitch.pid ]; then
		if ! ps aux | grep -v grep | grep '[/]opt/freeswitch/bin/freeswitch' > /dev/null; then
			print_header
			NOT_RUNNING_APPS="${NOT_RUNNING_APPS} freeswitch"
		else
			RUNNING_APPS="${RUNNING_APPS} freeswitch"
		fi
	fi

        if ! ps aux | grep -v grep | grep '[/]usr/lib/openoffice/program/soffice.bin' > /dev/null; then
                if ! ps aux | grep -v grep | grep '[/]usr/lib/libreoffice/program/soffice.bin' > /dev/null; then
                        print_header
                        NOT_RUNNING_APPS="${NOT_RUNNING_APPS} LibreOffice (check again in a minute as monit may not have started it yet)"
                fi
        else
                RUNNING_APPS="${RUNNING_APPS} OpenOffice"
        fi

	if ! ps aux | grep -v grep | grep '[/]usr/sbin/nginx' > /dev/null; then
		print_header
		NOT_RUNNING_APPS="${NOT_RUNNING_APPS} Nginx"
	else
		RUNNING_APPS="${RUNNING_APPS} Nginx"
	fi	

	if ! netstat -ant | grep '8080' > /dev/null; then
		print_header
		NOT_RUNNING_APPS="${NOT_RUNNING_APPS} ${SERVLET_CONTAINER} or grails"
	else 
		if ps aux |  ps -aef | grep -v grep | grep grails | grep run-app > /dev/null; then
			print_header
			RUNNING_APPS="${RUNNING_APPS} Grails"
        		echo "#   ${SERVLET_CONTAINER}: 	noticed you are running grails run-app instead of ${SERVLET_CONTAINER}"
		else
			RUNNING_APPS="${RUNNING_APPS} ${SERVLET_CONTAINER}"
		fi
	fi

	if ! netstat -ant | grep '8100' > /dev/null; then
                print_header
		NOT_RUNNING_APPS="${NOT_RUNNING_APPS} OpenOffice"
	else
		RUNNING_APPS="${RUNNING_APPS} OpenOffice"
        fi  

        if ! ps aux | grep -v grep | grep '[/]usr/bin/redis-server' > /dev/null; then
                print_header
                NOT_RUNNING_APPS="${NOT_RUNNING_APPS} redis-server"
        else
                RUNNING_APPS="${RUNNING_APPS} redis-server"
        fi

	if [ "$NOT_RUNNING_APPS" != "" ]; then
		echo "# Not Running: ${NOT_RUNNING_APPS}"
	fi


	#
	# Check if running development environment
	#
	if ! grep /var/www/bigbluebutton /etc/bigbluebutton/nginx/client.nginx > /dev/null; then
		NEW_LOCATION=$(cat  /etc/bigbluebutton/nginx/client.nginx  | sed -n '/root/{s/[ \t]*root[ \t]*//;s/;//;p}' | head -n 1)
		echo "# Warning: nginx is not serving the client from /var/www/bigbluebutton/."
		echo "# Instead, it's being served from"
		echo "#"
		echo "#    $NEW_LOCATION"
		echo "#"
		echo "# (This is OK if you have setup a development environment.) "
		echo

		if [ ! -d $NEW_LOCATION ]; then
			echo "# Warning: The directory"
			echo "#"
			echo "#    $NEW_LOCATION"
			echo "#"
			echo "# does not exist.  The BigBlueButton client will not load."
			echo
		fi
	fi

	#
	# Check if running development environment
	#
	if ! grep 8080 /etc/bigbluebutton/nginx/web.nginx > /dev/null; then
		echo "# Warning: nginx is not serving BigBlueButton's web application"
		echo "# from port 8080"
		echo "#"
		echo "# (This is OK if you have setup a development environment.) "
		echo
	fi


	#
	# Check red5 applictaions
	#
	AVAIL_RED5_APPS=""
	UNAVAIL_RED5_APPS=""
	DIRECTORIES="bigbluebutton sip video deskshare"
	for dir in $DIRECTORIES ; do
		if [ ! -d $RED5_DIR/webapps/$dir ]; then
			UNAVAIL_RED5_APPS="${UNAVAIL_RED5_APPS} $dir"
		else
			AVAIL_RED5_APPS="${AVAIL_RED5_APPS} $dir"
		fi
	done

	if [ "$UNAVAIL_RED5_APPS" != "" ]; then
		echo "# Unavailable Red5 apps ($RED5_DIR/webapps/): ${UNAVAIL_RED5_APPS}"
	fi


	#
	# Checking red5 apps log
	#
	RED5_LOG_FILES="bigbluebutton red5 sip video deskshare"
	AVAIL_RED5_LOG=""
	UNAVAIL_RED5_LOG=""
	for file in $RED5_LOG_FILES ; do
		if [ ! -f $RED5_DIR/log/$file.log ]; then
			UNAVAIL_RED5_LOG="${UNAVAIL_RED5_LOG} $file.log"
		else
			AVAIL_RED5_LOG="${AVAIL_RED5_LOG} $file.log"
		fi
	done

	if [ "$UNAVAIL_RED5_LOG" != "" ]; then
		echo "# Unavailable Red5 logs ($RED5_DIR/log): $UNAVAIL_RED5_LOG"
	fi


	#
	# Check if any of the red5 BigBlueButton applications did not start propery
	#
	BBB_APPS="sip video bigbluebutton deskshare"
	for bbb_app in $BBB_APPS ; do
		if [ -a $RED5_DIR/log/$bbb_app.log ]; then
			if cat $RED5_DIR/log/$bbb_app.log | tail -n1 | grep -q "Starting up context"; then
				echo "#    $bbb_app did not start properly"
			fi
		else
			echo "#    $RED5_DIR/log/$bbb_app.log not found"
		fi
	done

	#
	# Check for required external commands
	#
	COMMANDS="ruby gem ghostscript pdf2swf"
	for cmd in $COMMANDS ; do
		if ! which $cmd > /dev/null; then
			echo "#    $cmd command not found"
		fi
	done

	#
	# Check if ffmpeg is installed, and whether it is a supported version
	#
	FFMPEG_VERSION=$(ffmpeg -version 2>/dev/null | grep ffmpeg | cut -d ' ' -f3)
	case "$FFMPEG_VERSION" in
	2.3.*)
		# This is the current supported version; OK.
		;;
	'')
		echo "# Warning: No ffmpeg version was found on the system"
		echo "#          Recording processing will not function"
		echo
		;;
	*)
		echo "# Warning: The installed ffmpeg version '${FFMPEG_VERSION}' is not supported"
		echo "#          Recording processing may not function correctly"
		echo
		;;
	esac


	if [ -f /usr/share/red5/log/sip.log ]; then
		#
		# Checking if voice app registered successfully
		#
        	if cat /usr/share/red5/log/sip.log | grep -q "Failed to register with Sip Server"; then
                	echo "# Error: The voice application failed to register with the sip server."
                	echo "#   Try running: "
                	echo "#"
                	echo "#      sudo bbb-conf --clean"
                	echo "#"
        		echo 
		fi

		#	
		# check if sip.log has warnings where the user is not registered.  
		#

		if cat /usr/share/red5/log/sip.log | tail -n1 | grep -q "Call request for default but not registered"; then
			echo "# Error: The voice app is not registered with SIP server. Audio might not be working correctly."
        		echo 
		fi
	else
		echo "# Error: /usr/share/red5/log/sip.log"
        	echo 
        fi

	#
	# Check that the servlet container has started properly and has created log files
	#
	if [ -z "$(ls -A $SERVLET_LOGS)" ]; then
        	echo "#                     empty directory: $SERVLET_LOGS contains no logs"
	fi

	#
	# Check that bigbluebutton in red5 has started propertly (less than 100 lines indicates that it
	# didn't start)
	# 
	if [ -f $RED5_DIR/log/bigbluebutton.log ]; then
		BBB_RED5_LOG=$(stat -c%s $RED5_DIR/log/bigbluebutton.log)
		if [ $BBB_RED5_LOG -lt 100 ]; then
        		echo "#       bigbluebutton failed to start: $RED5_DIR/log/bigbluebutton.log (red5)"
		fi
	else
		echo "#      No $RED5_DIR/log/bigbluebutton.log"
	fi

	#
	# Check if the user is running their own bbb-web
	#
	if grep -q 8888 /etc/bigbluebutton/nginx/web.nginx; then
		if ! netstat -ant | grep '8888' > /dev/null; then
			echo "# Warning: There is no application server listening to port 8888."
			echo 
		fi
	fi	


	#
	# Check if the local server can access the API.  This is a common problem when setting up BigBlueButton behind
	# a firewall
	#
        BBB_WEB=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | sed -n '/^bigbluebutton.web.serverURL/{s/.*\///;p}')
 	check_no_value server_name /etc/nginx/sites-available/bigbluebutton $BBB_WEB
	if ! wget http://$BBB_WEB/bigbluebutton/api -O - --quiet | grep -q SUCCESS; then 
		echo "# Error: Could not connect to the configured hostname/IP address"
		echo "#"
		echo "#    http://$BBB_WEB/"
		echo "#"
		echo "# If your BigBlueButton server is behind a firewall, see FAQ."
		echo 
	fi

	#
	# Check that BigBlueButton can connect to port 80, 1935, and 9123
	#
	if [ ! -z $NGINX_IP ]; then
		if ! nc -z -w 3 $NGINX_IP 1935; then
			echo "# Error: Unable to connect to port 1935 (RTMP) on $NGINX_IP"
			echo 
		fi

		if ! nc -z -w 3 $NGINX_IP 9123; then
			echo "# Error: Unable to connect to port 9123 (desktop sharing) on $NGINX_IP"
			echo 
		fi
	fi


		BBB_SIP_APP_IP=$(cat /usr/share/red5/webapps/sip/WEB-INF/bigbluebutton-sip.properties | sed -n '/^bbb.sip.app.ip=/{s/.*=//;s/;//;p}')
		if [ $BBB_SIP_APP_IP != "127.0.0.1" ]; then
			if [ "$BBB_SIP_APP_IP" != $IP ]; then
				echo "# Warning: The setting of ($BBB_SIP_APP_IP) for bbb.sip.app.ip in"
				echo "#"
				echo "#    /usr/share/red5/webapps/sip/WEB-INF/bigbluebutton-sip.properties"
				echo "#"
				echo "# does not match the local IP address ($IP)."
				echo "# (This is OK if you've manually changed the values to an external "
				echo "# FreeSWITCH server.)"
				echo 
			fi

                        SIP_IP=$(netstat -ant | grep 5060 | head -n1 | awk -F" " '{print $4}' | cut -d: -f1)
                        if [ -z $SIP_IP ]; then
                                echo "# Error: Could not detect FreeSWITCH listening on port 5060"
                                echo 
                        else
                            if [ "$BBB_SIP_APP_IP" != $SIP_IP ]; then
                                echo "# Error: FreeSWITCH is listening on IP address $SIP_IP for SIP calls, but "
                                echo "# The IP address ($BBB_SIP_APP_IP) set bbb.sip.app.ip."
                                echo "#"
                                echo 
                            fi
                        fi
		fi

	if [ -d ${SERVLET_DIR}/lti ]; then
		if test ${SERVLET_DIR}/lti.war -nt ${SERVLET_DIR}/lti; then 
			echo "# Error: The updated lti.war did not deploy.  To manually deploy:"
			echo "#"
                        echo "#    sudo touch ${SERVLET_DIR}/lti.war"
			echo "#"
                        echo
		fi
	fi

	if [ -d ${SERVLET_DIR}/demo ]; then
		if test ${SERVLET_DIR}/demo.war -nt ${SERVLET_DIR}/demo; then 
			echo "# Error: The updated demo.war did not deploy.  To manually deploy:"
			echo "#"
                        echo "#    sudo touch ${SERVLET_DIR}/demo.war"
			echo "#"
                        echo
		fi
	fi

        if grep -q removeMeetingWhenEnded=false $SERVLET_DIR/bigbluebutton/WEB-INF/classes/bigbluebutton.properties; then
                echo "# Warning: In"
                echo "#"
                echo "#    $SERVLET_DIR/bigbluebutton/WEB-INF/classes/bigbluebutton.properties"
                echo "#"
                echo "# detected the setting"
                echo "#"
                echo "#    removeMeetingWhenEnded=false"
                echo "#"
                echo "# You should set this value to true.  It enables bbb-web to immediately purge a meeting from"
		echo "# memory when receiving an end API call.  Otherwise, users must wait about 2 minutes"
		echo "# request before creating a meeting with the same meetingID but with different parameters."
                echo
        fi

        if (( $MEM < 3940 )); then
		echo "# Warning: You are running BigBlueButton on a server with less than 4G of memory.  Your"
		echo "# performance may suffer."
                echo
	fi

	
	if [ -f ${SERVLET_DIR}/demo/demo1.jsp ]; then
		BBB_WEB=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | sed -n '/^bigbluebutton.web.serverURL/{s/.*\///;p}')
		echo "# Warning: The API demos are installed and accessible from:"
		echo "#"
		echo "#    http://$BBB_WEB/"
		echo "#"
		echo "# These API demos allow anyone to access your server without authentication"
		echo "# to create/manage meetings and recordings. They are for testing purposes only."
		echo "# If you are running a production system, remove them by running:"
		echo "#"
		echo "#    sudo apt-get purge bbb-demo"
		echo 
	fi

	if [ -f /var/www/bigbluebutton/check/conf/config.xml ]; then
		CHECK_HOST=$(cat /var/www/bigbluebutton/check/conf/config.xml  | grep "<uri>rtmp" | head -1 | sed  's/.*rtmp[s]*:\/\///g' | sed 's/\/.*//g' | tr -d '\015')
		echo "# Warning: The client self check is installed and accessible from:"
		echo "#"
		echo "#    http://$CHECK_HOST/check"
		echo "#"
		echo 

	fi

	if [ -f ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties ]; then
		LTI_URL='http://'$(cat ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties | sed -n '/^ltiEndPoint/{s/^.*=//;p}')'/lti/tool'
		echo "# Warning: The IMS Learning Tools Integration (LTI) is accessible from:"
		echo "#"
		echo "#    $LTI_URL"
		echo "#"
		echo "# To get the access parameters for LTI, run the command"
		echo "#"
		echo "#    bbb-conf --lti"
		echo 
	fi

	BBB_WEB=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | sed -n '/^bigbluebutton.web.serverURL/{s/.*=//;p}')
	DEFAULT_PDF=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | sed -n '/^beans.presentationService.defaultUploadedPresentation/{s/.*=//;p}')
	if echo $DEFAULT_PDF | grep -q "bigbluebutton.web.serverURL"; then
        	if ! echo "$BBB_WEB$(echo $DEFAULT_PDF | sed 's/${bigbluebutton.web.serverURL}//g')" | xargs wget -q -O /dev/null; then
			echo "# Error: Unable to reach default URL for presentation:"
			echo "#"
			echo "#    $BBB_WEB$(echo $DEFAULT_PDF | sed 's/${bigbluebutton.web.serverURL}//g')"
			echo "#"
                	echo "# Check value for beans.presentationService.defaultUploadedPresentation in"
                	echo "#   ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties"
        	fi
	else
        	if ! echo "$DEFAULT_PDF" | xargs wget -q -O /dev/null; then
			echo "# Error: Unable to reach default URL for presentation"
			echo "#"
			echo "#    $DEFAULT_PDF"
			echo "#"
                	echo "# Check value for beans.presentationService.defaultUploadedPresentation in"
                	echo "#   ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties"
        	fi
	fi

	RED5_PID_PS=$(ps -u red5 | grep java | sed 's/^[ ]*//g' | cut -d" " -f1)
	RED5_PID_FILE=$(cat /var/run/red5.pid)

	if [[ "$RED5_PID_PS" != "$RED5_PID_FILE" ]]; then
		echo "# Error: red5 process ID does not match value in PID file"
		echo "#"
		echo "#         pid from top: $RED5_PID_PS"
		echo "#    /var/run/red5.pid: $RED5_PID_FILE"  
		echo "#"
	fi

	exit 0
}


#
# Print out the status of the current setup and look for bugs.
#
if [ $CHECK ]; then
	need_root
	
	echo 
        echo "BigBlueButton Server $BIGBLUEBUTTON_RELEASE ($(dpkg -l | grep bbb  | sed -n '/[0-9].[0-9].[0-9]-1ubuntu/{s/.*ubuntu//;s/;//;p}' | awk '{ sum+=$1} END {print sum}'))"
	echo "                    Kernel version:" `uname -r`

	if [ -e /etc/lsb-release ]; then
		source /etc/lsb-release;
		echo -n "                      Distribution: $DISTRIB_DESCRIPTION "
	fi

	if [ `uname -m` == "x86_64" ]; then
		echo "(64-bit)"
	elif [ `uname -m` == "i686" ]; then
		echo "(32-bit)"
	fi

	echo "                            Memory: $MEM MB"

	echo
	echo "/var/www/bigbluebutton/client/conf/config.xml (bbb-client)"
	PORT_IP=$(cat /var/www/bigbluebutton/client/conf/config.xml | sed -n '/porttest /{s/.*host="//;s/".*//;p}')
	echo "  		Port test (tunnel): $PORT_IP"

	RED5_IP=$(cat /var/www/bigbluebutton/client/conf/config.xml | sed -n '/uri.*video/{s/.*rtmp[s]*:\/\///;s/\/.*//;p}')
	WEBRTC_ENABLED_CLIENT=$(grep -i useWebrtcIfAvailable /var/www/bigbluebutton/client/conf/config.xml | cut -d '"' -f2)
	echo "                              Red5: $RED5_IP"
	echo "              useWebrtcIfAvailable: $WEBRTC_ENABLED_CLIENT"

	WEBRTC_SOCKET=$(sudo cat /opt/freeswitch/conf/sip_profiles/external.xml | sed -n '/ws-binding/{s/.*value="://;s/".*//;p}')
	echo
	echo "/opt/freeswitch/conf/sip_profiles/external.xml (FreeSWITCH)"
	echo "                    websocket port: $WEBRTC_SOCKET"	
	WEBRTC_ENABLED=$(grep -i webrtc /var/www/bigbluebutton/client/conf/config.xml | cut -d '"' -f2)
	echo "                    WebRTC enabled: $WEBRTC_ENABLED"	

	echo
	echo "/etc/nginx/sites-available/bigbluebutton (nginx)"
	NGINX_IP=$(cat /etc/nginx/sites-available/bigbluebutton | sed -n '/server_name/{s/.*name[ ]*//;s/;//;p}' | cut -d' ' -f1 | cut -d' ' -f1)
	echo "                       server name: $NGINX_IP"

	PORT=$(cat /etc/nginx/sites-available/bigbluebutton | sed -n '/listen/{s/.*listen[ ]*//;s/;//;p}')
	echo "                              port: $PORT"

	BBB_CLIENT_DOC_ROOT=$(cat /etc/bigbluebutton/nginx/client.nginx | grep \/client -A 1 | head -n 2 | grep root | sed -n '{s/[ \t]*root[ ]*//;s/;//;p}')
	echo "                    bbb-client dir: $BBB_CLIENT_DOC_ROOT"

	BBB_WEB_IP=$(cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties | sed -n '/^bigbluebutton.web.serverURL/{s/.*\///;p}')
	echo
	echo "${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties (bbb-web)"
	echo "                      bbb-web host: $BBB_WEB_IP"

	if [ -f ${SERVLET_DIR}/demo/bbb_api_conf.jsp ]; then
		API_IP=$(cat ${SERVLET_DIR}/demo/bbb_api_conf.jsp  | sed -n '/String BigBlueButtonURL/{s/.*http:\/\///;s/\/.*//;p}' | tr -d '\015')
		echo
		echo "${SERVLET_DIR}/demo/bbb_api_conf.jsp (API demos)"
		echo "                           api url: $API_IP"
	fi

	if [ -f ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties ]; then
		LTI_URL=$(cat ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties  | sed -n '/^bigbluebuttonURL/{s/.*http:\/\///;s/\/.*//;p}' | tr -d '\015')
		echo
		echo "${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties (LTI integration)"
		echo "                           api url: $LTI_URL"
	fi

	if [ -f /var/www/bigbluebutton/check/conf/config.xml ]; then
		CHECK_URL=$(cat /var/www/bigbluebutton/check/conf/config.xml  | grep "<uri>rtmp" | head -1 | sed  's/.*rtmp[s]*:\/\///g' | sed 's/\/.*//g' | tr -d '\015')
		echo
		echo "/var/www/bigbluebutton/check/conf/config.xml (client check)"
		echo "                      client check: $CHECK_URL"
	fi

	CONFERENCING_MODULE="FreeSWITCH"

	echo
	echo "/usr/share/red5/webapps/bigbluebutton/WEB-INF/red5-web.xml (red5)"
	echo "                  voice conference: $CONFERENCING_MODULE"

	CAPTURE_VIDEO="$(cat /usr/share/red5/webapps/video/WEB-INF/red5-web.xml | sed -n '/recordVideoStream/{s/^.*="//g;s/"\/>//g;p}')"
	echo "                     capture video: $CAPTURE_VIDEO"

	CAPTURE_DESKTOP="$(cat /usr/share/red5/webapps/deskshare/WEB-INF/red5-web.xml | grep -m 1 '<constructor-arg index="0" value'  | sed -n '/constructor-arg/{s/^.*="//g;s/"\/>//g;p}')"
	echo "                   capture desktop: $CAPTURE_DESKTOP"


	if [ -f /usr/local/bigbluebutton/core/scripts/bigbluebutton.yml ]; then
		PLAYBACK_IP=$(cat /usr/local/bigbluebutton/core/scripts/bigbluebutton.yml  | sed -n '/^playback_host/{s/.*:[ ]*//;s/;//;p}' | tail -n 1)
		echo
		echo "/usr/local/bigbluebutton/core/scripts/bigbluebutton.yml (record and playback)"
		echo "                     playback host: $PLAYBACK_IP"
	fi

	check_state
	echo ""

	exit 0
fi

#
# Check current setup
#
if [ $ZIP ]; then
	need_root

	LOG_FILE="$(date +'%Y%m%d')-$(date +%H)"
	#
	# Check log files
	#
	rm -f /tmp/$LOG_FILE.tar
	rm -f /tmp/$LOG_FILE.tar.gz
	rm -f /tmp/a

	touch /tmp/empty
	tar cf /tmp/$LOG_FILE.tar /tmp/empty			> /dev/null 2>&1
	tar rf /tmp/$LOG_FILE.tar $RED5_DIR/log			> /dev/null 2>&1
	tar rf /tmp/$LOG_FILE.tar $SERVLET_LOGS			> /dev/null 2>&1
	tar rf /tmp/$LOG_FILE.tar /var/log/bigbluebutton/*	> /dev/null 2>&1
	tar rf /tmp/$LOG_FILE.tar /var/log/nginx/error.log	> /dev/null 2>&1
	tar rf /tmp/$LOG_FILE.tar /var/log/syslog		> /dev/null 2>&1

	tar tf /tmp/$LOG_FILE.tar
	gzip /tmp/$LOG_FILE.tar
	mv /tmp/$LOG_FILE.tar.gz /root/$LOG_FILE.tar.gz
	echo
	echo "  Created: /root/$LOG_FILE.tar.gz"
	echo
fi

#
# Check current setup
#
if [ $DEBUG ]; then
	need_root
	#
	# Check log files
	#

	rm -rf /tmp/t
	grep --directories=skip ERROR /var/log/bigbluebutton/* > /tmp/t
	if [ -s /tmp/t ]; then
		echo "  -- ERRORS found in /var/log/bigbluebutton/* -- "
		cat /tmp/t
		echo
	fi

	rm -rf /tmp/t
	grep --directories=skip Exception /var/log/bigbluebutton/* | grep -v CacheExceptionHandlerFactory > /tmp/t
        if [ -s /tmp/t ]; then
                echo "  -- ERRORS found in /var/log/bigbluebutton/* -- "
                cat /tmp/t
                echo
        fi


	rm -rf /tmp/t
	grep --directories=skip ERROR $RED5_DIR/log/* > /tmp/t 
	if [ -s /tmp/t ]; then
		echo "   -- ERRORS found in $RED5_DIR/log/* -- "
		cat /tmp/t
 		echo
	fi


	rm -rf /tmp/t
	grep --directories=skip Exception $RED5_DIR/log/* > /tmp/t 
	if [ -s /tmp/t ]; then
		echo "   -- Exceptions found in $RED5_DIR/log/* -- "
		cat /tmp/t
		echo
	fi


	rm -rf /tmp/t
	sudo grep --directories=skip Exception $SERVLET_LOGS/* | grep -v CacheExceptionHandlerFactory > /tmp/t 
	if [ -s /tmp/t ]; then
		echo "   -- Exceptions found in $SERVLET_LOGS/ -- "
		cat /tmp/t
		echo
	fi

        rm -rf /tmp/t
        if [ -s /var/log/nginx/error.log ]; then
                cat /var/log/nginx/error.log | grep -v "/fcs/ident2" > /tmp/t
                if [ -s /tmp/t ]; then
                        echo "   -- Errors found in /var/log/nginx/error.log -- "
                        cat /tmp/t
                        echo
                fi
        fi

	rm -rf /tmp/t
	sudo grep --directories=skip -i exception /var/log/syslog > /tmp/t 
	if [ -s /tmp/t ]; then
		echo "   -- Errors found in /var/log/syslog -- "
		cat /tmp/t
		echo
	fi

	rm -rf /tmp/t
	if [ -d /var/log/bigbluebutton ]; then
		  sudo grep --directories=skip ERROR /var/log/bigbluebutton/* > /tmp/t 
		  if [ -s /tmp/t ]; then
			echo "   -- Errors found in /var/log/bigbluebutton -- "
			cat /tmp/t
			echo
		  fi
	fi

	rm -rf /tmp/t
	if [ -d /var/log/bigbluebutton ]; then
		  sudo grep --directories=skip -i exception /var/log/bigbluebutton/* > /tmp/t 
		  if [ -s /tmp/t ]; then
			echo "   -- Exceptions found in /var/log/bigbluebutton -- "
			cat /tmp/t
			echo
		  fi
	fi

	#
	# Additional checks for record and playback
	#

	bbb-record --check

	exit 0
fi



# if asked to print the version that's all we do
if [ -n "$HOST" ]; then
	#
	# Just use the IP for port test in /var/www/bigbluebutton/client/conf/config.xml
	#
	echo "Assigning $HOST for testing for firewall in /var/www/bigbluebutton/client/conf/config.xml"
	sudo sed -i "s/porttest host=\(\"[^\"]*\"\)/porttest host=\"$HOST\"/g" /var/www/bigbluebutton/client/conf/config.xml

	echo "Assigning $HOST for rtmp:// in /var/www/bigbluebutton/client/conf/config.xml"
	sudo sed -i "s/rtmp[s]*:\/\/\([^\"\/]*\)\([\"\/]\)/$PROTOCOL_RTMP:\/\/$HOST\2/g" /var/www/bigbluebutton/client/conf/config.xml

	echo "Assigning $HOST for servername in /etc/nginx/sites-available/bigbluebutton"
	sudo sed -i "s/server_name  .*/server_name  $HOST;/g" /etc/nginx/sites-available/bigbluebutton

	#
	# Update configuration for BigBlueButton client
	#
	echo "Assigning $HOST for http:// in /var/www/bigbluebutton/client/conf/config.xml"
	sudo sed -i "s/http[s]*:\/\/\([^\"\/]*\)\([\"\/]\)/$PROTOCOL_HTTP:\/\/$HOST\2/g"  /var/www/bigbluebutton/client/conf/config.xml

        echo "Assigning $HOST for publishURI in /var/www/bigbluebutton/client/conf/config.xml"
        sudo sed -i "s/publishURI=\"[^\"]*\"/publishURI=\"$HOST\"/" /var/www/bigbluebutton/client/conf/config.xml

	#
	# Update configuration for BigBlueButton web app
	#
	echo "Assigning $HOST for web application URL in ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties"

	sudo sed -i "s/bigbluebutton.web.serverURL=http[s]*:\/\/.*/bigbluebutton.web.serverURL=$PROTOCOL_HTTP:\/\/$HOST/g" \
				${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties

    # 3 paramenter: the file, the variable name, the new value
	# echo "Assigning $HOST for FreeSWITCH Event Socket Layer URL in ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties"
	# change_var_ip /usr/share/red5/webapps/bigbluebutton/WEB-INF/bigbluebutton.properties esl.host $HOST

	# cat ${SERVLET_DIR}/bigbluebutton/WEB-INF/classes/bigbluebutton.properties

	if ! grep -q server_names_hash_bucket_size /etc/nginx/nginx.conf; then
		sudo sed -i "s/gzip  on;/gzip  on;\n    server_names_hash_bucket_size  64;/g" /etc/nginx/nginx.conf
	fi

	#
	# Update api demos
	#

	if [ -f ${SERVLET_DIR}/demo/bbb_api_conf.jsp ]; then
		echo "Assigning $HOST for api demos in ${SERVLET_DIR}/demo/bbb_api_conf.jsp"
		sudo sed -i "s/BigBlueButtonURL = \"http[s]*:\/\/\([^\"\/]*\)\([\"\/]\)/BigBlueButtonURL = \"$PROTOCOL_HTTP:\/\/$HOST\2/g" \
			${SERVLET_DIR}/demo/bbb_api_conf.jsp
	fi
	

	if [ -f ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties ]; then
		echo "Assigning $HOST for LTI integration in ${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties"
        	sed -i "s/bigbluebuttonURL=http:\/\/.*/bigbluebuttonURL=http:\/\/$HOST\/bigbluebutton/g" \
                	${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties
        	sed -i "s/ltiEndPoint=.*/ltiEndPoint=$HOST/g" \
                	${SERVLET_DIR}/lti/WEB-INF/classes/lti.properties
	fi


	if [ -f /usr/local/bigbluebutton/core/scripts/bigbluebutton.yml ]; then
		echo "Assigning $HOST for record and playback in /usr/local/bigbluebutton/core/scripts/bigbluebutton.yml"
		change_yml_value /usr/local/bigbluebutton/core/scripts/bigbluebutton.yml $redis_host playback_host $HOST
	fi

        echo -n "Assigning $HOST for playback of recordings: "
        for metadata in $(find /var/bigbluebutton/published -name metadata.xml); do
                echo -n "."
                sed -i "/<link>/{s/http:\/\/\([^\"\/]*\)\/playback\/$type\([^<]\)/http:\/\/$HOST\/playback\/$type\2/g}" $metadata
        done

        for metadata in $(find /var/bigbluebutton/unpublished -name metadata.xml); do
                echo -n "."
                sed -i "/<link>/{s/http:\/\/\([^\"\/]*\)\/playback\/$type\([^<]\)/http:\/\/$HOST\/playback\/$type\2/g}" $metadata
        done
	echo 

	if [ -f /var/www/bigbluebutton/check/conf/config.xml ]; then
		echo "Assigning $HOST for client self check to /var/www/bigbluebutton/check/conf/config.xml"
		sed -i "s/rtmp[s]*:\/\/\([^\"\/]*\)\//$PROTOCOL_RTMP:\/\/$HOST\//g" /var/www/bigbluebutton/check/conf/config.xml
		sed -i "s/rtmpt:\/\/\([^\"\/]*\)\//rtmpt:\/\/$HOST\//g" /var/www/bigbluebutton/check/conf/config.xml
	fi

	echo "Restarting the bigbluebutton server ..."
	stop_bigbluebutton
	echo
	start_bigbluebutton

	exit 0
fi


if [ $RESTART ]; then
	need_root
	check_configuration
	
	echo "Restarting BigBlueButton ..."

	stop_bigbluebutton
	echo
	display_bigbluebutton_status
	echo
	start_bigbluebutton
	check_state
fi

if [ $CLEAN ]; then
	need_root
	check_configuration
	
	echo "Doing a restart of BigBlueButton and cleaning out all log files..."

	stop_bigbluebutton

	#
	# Clean log files
	#

	echo 
	echo "Cleaning Log Files ..."
	rm -f /var/log/bigbluebutton/bbb-web.log*
	rm -f /var/log/bigbluebutton/*.log

	#
	# Clean out the log files for record and playback
	#
	rm -f /var/log/bigbluebutton/bbb-rap-worker.log*
	rm -f /var/log/bigbluebutton/archive.log*
	if [ -d /var/log/bigbluebutton/slides ]; then
		rm -f /var/log/bigbluebutton/slides/*
	fi
		
	
	if [ $RED5_DIR ]; then
		rm -rf $RED5_DIR/log/*
	fi

	if [ $SERVLET_LOGS ]; then
		rm -rf $SERVLET_LOGS/*
	fi

	rm -rf /var/log/nginx/*
	mv /var/log/syslog /tmp/syslog.$$
	echo "" > /var/log/syslog
	chown syslog:adm /var/log/syslog

	if [ -d /var/log/bbb-fsesl-akka ]; then
		rm -f /var/log/bbb-fsesl-akka/*
  fi
	if [ -d /var/log/bbb-apps-akka ]; then
		rm -f /var/log/bbb-apps-akka/*
  fi

	display_bigbluebutton_status

	echo ""
	start_bigbluebutton
	check_state
fi

if [ $NETWORK ]; then
	netstat -ant | egrep ":1935|:9123|:80\ " | egrep -v ":::|0.0.0.0" > /tmp/t_net
	REMOTE=$(cat /tmp/t_net | cut -c 45-68 | cut -d ":" -f1 | sort | uniq)

	if [ "$REMOTE" != "" ]; then
        	echo -e "netstat\t\t\t80\t1935\t9123"
        	for IP in $REMOTE ; do
			PORT_1935=$(cat /tmp/t_net | grep :1935 | cut -c 45-68 | cut -d ":" -f1 | grep $IP | wc -l)
			PORT_9123=$(cat /tmp/t_net | grep :9123 | cut -c 45-68 | cut -d ":" -f1 | grep $IP | wc -l )
			PORT_80=$(cat /tmp/t_net | grep :80 | cut -c 45-68 | cut -d ":" -f1 | grep $IP | wc -l )

           	echo -e "$IP\t\t$PORT_80\t$PORT_1935\t$PORT_9123"
        	done
	fi
fi

if [ $WATCH ]; then
	need_root
	watch -n 2 "top -n 1 -b | head -n 5; echo; bbb-conf --network; bbb-conf --debug"
fi