# ------------------------------------------------------------------
# dlayer.rb	Print all the layer fields
#	usage : prlayer <capture-file> <layername> 
#
#
# ------------------------------------------------------------------
require 'win32ole'

USAGE = "prlayer <capture-filename> <layer-name>"


# function printField
#	Formats and prints a field (also subfields if present)
#
def printField(indent, field)
	pad = "  "*indent
	print pad
	print "#{field.Name}\t\t #{field.Value} \n" 
	
	if field.SubFieldCount > 0 
		field.SubFields.each { |f| printField(indent+2, f) }
	end
end


if ARGV.length != 2
	puts USAGE
	exit 1
end

InputFile = ARGV[0]
LayerName = ARGV[1]
UnsniffDB = WIN32OLE.new("Unsniff.Database")
UnsniffDB.Open(InputFile)


PacketStore = UnsniffDB.PacketIndex
(0..PacketStore.Count-1).each do |idx|
	pkt = PacketStore.Item(idx)
	layers = pkt.Layers
	layers.each do |lyr| 
		if lyr.Name == LayerName 
			print "#{lyr.Name}\n---#{pkt.ID}--#{pkt.Description}---\n"
			lyr.Fields.each { |field| printField(1,field) }
		end
	end
end
UnsniffDB.Close()