#! /bin/sh
#
# Show a map of dahdi devices with the following fields:
#  - spanno (or '-' if not assigned yet)
#  - (vendor assigned) name
#  - local spanno
#  - hardware_id (or empty if none)
#  - location (prefixed by '@')

devbase="/sys/bus/dahdi_devices/devices"

[ -d "$devbase" ] || {
	echo >&2 "$0: Missing '$devbase' (Old driver?)"
	exit 1
}

fmt="%-4s %-17s %-3s     %-12s %s\n"

printf "$fmt" 'SPAN' 'NAME' '#' 'HARDWARE_ID' 'LOCATION'

DEVICES=`echo $devbase/*`

for device in $DEVICES
do
	hw_id=`cat "$device/hardware_id"`
	location=`cd "$device" && pwd -P | sed 's,/sys/devices/,,'`
	for local_spanno in `cut -d: -f1 "$device/spantype"`
	do
		span=`grep 2>/dev/null -Hw "$local_spanno" "$device/span-"*"/local_spanno" | \
			sed -e 's,/local_spanno:.*,,' -e 's,.*/,,'`
		if [ "$span" != '' ]; then
			spanno=`echo $span | sed 's/^.*-//'`
			name=`cat 2>/dev/null "$device/$span/name"`
		else
			spanno='-'
		fi
		printf "$fmt" "$spanno" "$name" "($local_spanno)" "[$hw_id]" "@$location"
	done | sort -n
done