asterisk: fix getAllLines() in util.sh

This fixes getAllLines() to not use hard-coded number of lines. Instead we look at hw.board.VoicePorts and
enumerates the ports from the value.

This solves an issue with the FT-P3414B which only has one FXS port.

net/asterisk/files/iopsys/lib/voice/utils.sh

@@ -8,24 +8,33 @@ LINENAME="extension"
 CHANNELNAME="TELCHAN"
 
 getSerial() {
-	sn=$(uci -q get /etc/board-db/config/hw.board.serial_number)
+	local sn=$(db -q get hw.board.serial_number)
 	[ -z "$sn" ] && sn="0000000000"
 	echo $sn
 }
 
 getBaseMAC() {
-	mac=$(uci -q get /etc/board-db/config/hw.board.basemac)
+	local mac=$(db -q get hw.board.basemac)
 	[ -z "$mac" ] && mac="00:22:07:11:22:30"
 	echo $mac
 }
 
 getAllLines() {
-	has_dect=$(uci -q get /etc/board-db/config/hw.board.hasDect)
-	if [ "$has_dect" == "1" ]; then
-		echo "TELCHAN/0&TELCHAN/1&TELCHAN/2&TELCHAN/3&TELCHAN/4&TELCHAN/5"
-	else
-		echo "TELCHAN/0&TELCHAN/1"
-	fi
+	local i=0
+	local lines=""
+	local voiceports=$(db -q get hw.board.VoicePorts)
+
+	while [ $i -lt $voiceports ]; do
+		if [ -z "$lines" ]; then
+			lines="TELCHAN/${i}"
+		else
+			lines="${lines}&TELCHAN/${i}"
+		fi
+
+		i=$((i+1))
+	done
+
+	echo "$lines"
 }
 
 supportedCountries() {
@@ -45,4 +54,3 @@ SERIAL="$(getSerial)"
 BASEMAC="$(getBaseMAC)"
 BASEMAC="${BASEMAC//:}"
 USERAGENT="iopsys_${SERIAL}_${BASEMAC}"
-