#! /bin/sh

# $1 contains the path to the configuration file. It is passed in the systemd unit file 
# When calling the rtpengine command
# It should be /etc/default/rtpengine-conf
 
DEFAULTS=$1

# Load startup options if available
if [ -f $DEFAULTS ]; then
	. $DEFAULTS || true
fi

if [ "$RUN_RTPENGINE" != "yes" -a "$RUN_MEDIAPROXY" != "yes" ]; then
	echo "rtpengine not yet configured. Edit $DEFAULTS first."
	exit 0
fi

set -e

# Gradually fill the options of the command rtpengine which starts the RTPEngine daemon
# The variables used are sourced from the configuration file rtpengine-conf

OPTIONS=""

if [ ! -z "$INTERFACES" ]; then
	for interface in $INTERFACES; do
		OPTIONS="$OPTIONS --interface=$interface"
	done
fi

if [ ! -z "$TABLE" ]; then
	echo "TABLE=$TABLE" > /etc/default/rtpengine-table
fi

if [ ! -z "$SUBSCRIBE_KEYSPACES" ]; then
	for ks in $SUBSCRIBE_KEYSPACES; do
		OPTIONS="$OPTIONS --subscribe-keyspace=$ks"
	done
fi

[ -z "$ADDRESS" ] || OPTIONS="$OPTIONS --interface=$ADDRESS"
[ -z "$ADV_ADDRESS" ] || OPTIONS="$OPTIONS!$ADV_ADDRESS"
[ -z "$ADDRESS_IPV6" ] || OPTIONS="$OPTIONS --interface=$ADDRESS_IPV6"
[ -z "$ADV_ADDRESS_IPV6" ] || OPTIONS="$OPTIONS!$ADV_ADDRESS_IPV6"
[ -z "$LISTEN_TCP" ] || OPTIONS="$OPTIONS --listen-tcp=$LISTEN_TCP"
[ -z "$LISTEN_UDP" ] || OPTIONS="$OPTIONS --listen-udp=$LISTEN_UDP"
[ -z "$LISTEN_NG" ] || OPTIONS="$OPTIONS --listen-ng=$LISTEN_NG"
[ -z "$LISTEN_CLI" ] || OPTIONS="$OPTIONS --listen-cli=$LISTEN_CLI"
[ -z "$TIMEOUT" ] || OPTIONS="$OPTIONS --timeout=$TIMEOUT"
[ -z "$SILENT_TIMEOUT" ] || OPTIONS="$OPTIONS --silent-timeout=$SILENT_TIMEOUT"
[ -z "$FINAL_TIMEOUT" ] || OPTIONS="$OPTIONS --final-timeout=$FINAL_TIMEOUT"
[ -z "$PIDFILE" ] || OPTIONS="$OPTIONS --pidfile=$PIDFILE"
[ -z "$TOS" ] || OPTIONS="$OPTIONS --tos=$TOS"
[ -z "$PORT_MIN" ] || OPTIONS="$OPTIONS --port-min=$PORT_MIN"
[ -z "$PORT_MAX" ] || OPTIONS="$OPTIONS --port-max=$PORT_MAX"
[ -z "$REDIS" -o -z "$REDIS_DB" ] || OPTIONS="$OPTIONS --redis=$REDIS/$REDIS_DB"
[ -z "$REDIS_AUTH_PW" ] || export RTPENGINE_REDIS_AUTH_PW="$REDIS_AUTH_PW"
[ -z "$REDIS_WRITE" -o -z "$REDIS_WRITE_DB" ] || OPTIONS="$OPTIONS --redis-write=$REDIS_WRITE/$REDIS_WRITE_DB"
[ -z "$REDIS_WRITE_AUTH_PW" ] || export RTPENGINE_REDIS_WRITE_AUTH_PW="$REDIS_WRITE_AUTH_PW"
[ -z "$REDIS_NUM_THREADS" ] || OPTIONS="$OPTIONS --redis-num-threads=$REDIS_NUM_THREADS"
[ -z "$REDIS_EXPIRES" ] || OPTIONS="$OPTIONS --redis-expires=$REDIS_EXPIRES"
[ -z "$NO_REDIS_REQUIRED" -o \( "$NO_REDIS_REQUIRED" != "1" -a "$NO_REDIS_REQUIRED" != "yes" \) ] || OPTIONS="$OPTIONS --no-redis-required"
[ -z "$B2B_URL" ] || OPTIONS="$OPTIONS --b2b-url=$B2B_URL"
[ -z "$NO_FALLBACK" -o \( "$NO_FALLBACK" != "1" -a "$NO_FALLBACK" != "yes" \) ] || OPTIONS="$OPTIONS --no-fallback"
OPTIONS="$OPTIONS --table=$TABLE"
[ -z "$LOG_LEVEL" ] || OPTIONS="$OPTIONS --log-level=$LOG_LEVEL"
[ -z "$LOG_FACILITY" ] || OPTIONS="$OPTIONS --log-facility=$LOG_FACILITY"
[ -z "$LOG_FACILITY_CDR" ] || OPTIONS="$OPTIONS --log-facility-cdr=$LOG_FACILITY_CDR"
[ -z "$LOG_FACILITY_RTCP" ] || OPTIONS="$OPTIONS --log-facility-rtcp=$LOG_FACILITY_RTCP"
[ -z "$NUM_THREADS" ] || OPTIONS="$OPTIONS --num-threads=$NUM_THREADS"
[ -z "$DELETE_DELAY" ] || OPTIONS="$OPTIONS --delete-delay=$DELETE_DELAY"
[ -z "$GRAPHITE" ] || OPTIONS="$OPTIONS --graphite=$GRAPHITE"
[ -z "$GRAPHITE_INTERVAL" ] || OPTIONS="$OPTIONS --graphite-interval=$GRAPHITE_INTERVAL"
[ -z "$GRAPHITE_PREFIX" ] || OPTIONS="$OPTIONS --graphite-prefix=$GRAPHITE_PREFIX"
[ -z "$MAX_SESSIONS" ] || OPTIONS="$OPTIONS --max-sessions=$MAX_SESSIONS"
[ -z "$HOMER" ] || OPTIONS="$OPTIONS --homer=$HOMER"
[ -z "$HOMER_PROTOCOL" ] || OPTIONS="$OPTIONS --homer-protocol=$HOMER_PROTOCOL"
[ -z "$HOMER_ID" ] || OPTIONS="$OPTIONS --homer-id=$HOMER_ID"
[ -z "$RECORDING_DIR" ] || OPTIONS="$OPTIONS --recording-dir=$RECORDING_DIR"

if test "$FORK" = "no" ; then
	OPTIONS="$OPTIONS --foreground"
fi

if test "$LOG_STDERR" = "yes" ; then
	OPTIONS="$OPTIONS --log-stderr"
fi

if [ -x /usr/sbin/ngcp-virt-identify ]; then
	if /usr/sbin/ngcp-virt-identify --type container; then
		VIRT="yes"
	fi
fi

if [ "$TABLE" -ge 0 ] && [ "$VIRT" != "yes" ]; then
		set +e
		modprobe xt_RTPENGINE
		if [ -e /proc/mediaproxy/control ]; then
			echo "del $TABLE" > /proc/mediaproxy/control 2>/dev/null
		fi
		if [ -e /proc/rtpengine/control ]; then
			echo "del $TABLE" > /proc/rtpengine/control 2>/dev/null
		fi

	set +e
	if [ -x "/usr/sbin/ngcp-check_active" ]; then
	  /usr/sbin/ngcp-check_active -q
	  status=$?
	  case "${status}" in
	    0|3)
	      echo "Active node or transition."
	      ;;
	    *)
	      echo "Ignored start action in inactive node ($status)"
	      exit 0
	      ;;
	  esac
	fi
	echo -n "Starting RTP/media proxy: ngcp-rtpengine-daemon"
	if [ "$TABLE" -ge 0 ] && [ "$VIRT" != "yes" ]; then
		set +e
		modprobe xt_RTPENGINE
		if [ -e /proc/mediaproxy/control ]; then
			echo "del $TABLE" > /proc/mediaproxy/control 2>/dev/null
		fi
		if [ -e /proc/rtpengine/control ]; then
			echo "del $TABLE" > /proc/rtpengine/control 2>/dev/null
		fi
		iptables -D INPUT -j mediaproxy 2> /dev/null
		iptables -F mediaproxy 2> /dev/null
		iptables -X mediaproxy 2> /dev/null
		ip6tables -D INPUT -j mediaproxy 2> /dev/null
		ip6tables -F mediaproxy 2> /dev/null
		ip6tables -X mediaproxy 2> /dev/null
		rmmod xt_MEDIAPROXY 2> /dev/null

		if [ "$CREATE_IPTABLES_CHAIN" != "no" ]; then
			iptables -N rtpengine 2> /dev/null
			iptables -D INPUT -j rtpengine 2> /dev/null
			iptables -I INPUT -j rtpengine
			ip6tables -N rtpengine 2> /dev/null
			ip6tables -D INPUT -j rtpengine 2> /dev/null
			ip6tables -I INPUT -j rtpengine
		fi
		if iptables -C INPUT -j rtpengine 1> /dev/null 2> /dev/null && iptables -n --list rtpengine 1> /dev/null 2> /dev/null; then
			iptables -D rtpengine -p udp -j RTPENGINE --id "$TABLE" 2>/dev/null
			iptables -I rtpengine -p udp -j RTPENGINE --id "$TABLE"
			ip6tables -D rtpengine -p udp -j RTPENGINE --id "$TABLE" 2>/dev/null
			ip6tables -I rtpengine -p udp -j RTPENGINE --id "$TABLE"
		else
			echo ""
			echo "Missing rtpengine iptables chain - not starting"
			exit 0
		fi
		set -e
	fi
fi

rtpengine $OPTIONS

exit 0