Simple shell for communicating with IsoDep::Tag compatible tags

examples/nfc-apdu-shell.rb

@@ -0,0 +1,29 @@
+require 'ruby-nfc'
+
+WAITING_FOR_TAG = "Waiting for tag..."
+PROMPT = "%s < "
+OUTPUT = "%s > %s"
+
+puts WAITING_FOR_TAG
+
+NFC::Reader.all[0].poll(IsoDep::Tag) do |tag|
+ begin
+ loop do
+ print PROMPT % uid_hex
+ apdu = $stdin.readline.gsub(/\s+/, '')
+ case apdu
+ when /exit|quit/
+ puts "Bye!"
+ exit!
+ when /^([a-f0-9]{2}){5,128}$/i
+ response = send_apdu [apdu].pack('H*')
+ puts OUTPUT % [uid_hex, response]
+ else
+ puts "Error: wrong APDU format"
+ end
+ end
+ rescue Exception => e
+ p e
+ puts WAITING_FOR_TAG
+ end
+end