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#!/usr/bin/env ruby
# encoding: UTF-8
=begin
This file is part of softSIM.
softSIM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
softSIM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with sofSIM. If not, see <http://www.gnu.org/licenses/>.
Copyright (C) 2011 Kevin "tsaitgaist" Redon kevredon@mail.tsaitgaist.info
=end
require './sap/server.rb'
require 'rubygems'
require 'smartcard'
=begin
need to install
sudo aptitude install ruby ruby-dev rubygems
sudo aptitude install libpcsclite1 libpcsclite-dev libruby
sudo gem install smartcard (http://www.rubygems.org/gems/smartcard)
=end
# SAP server using PCSC for the card
class PCSCServer < Server
# provide the io to listen to
def initialize(io)
super(io)
end
# get the reader and the card
# return if connection to card succeeded
def select_card
# get PCSC context
begin
@context = Smartcard::PCSC::Context.new
rescue Smartcard::PCSC::Exception => e
puts "PCSC not available. please start PCSC"
return false
end
# get all readers
begin
readers = @context.readers
rescue Smartcard::PCSC::Exception => e
puts "no reader available. please connect a card reader"
return false
end
# one reader required
if readers.size==0 then
puts "no reader available. connect a reader"
return false
# select reader
elsif readers.size==1 then
# use the first reader
reader = readers.first
elsif @reader_id
# reader already selected
else
# select reader
puts "readers:"
readers.each_index do |i|
puts "#{i}) #{readers[i]}"
end
reader = nil
until reader do
print "select reader [0]: "
@reader_id = gets.chomp.to_i
reader = readers[@reader_id]
end
end
puts "using reader: #{reader}"
# connect to the card
verb = true
begin
@card = Smartcard::PCSC::Card.new(@context,reader,:exclusive,:t0)
rescue Smartcard::PCSC::Exception
puts "no card inside. insert smart card"
return false
end
puts "connected to card"
return true
end
# connect to card
def connect
# connect to card
sleep 1 until select_card
return true
end
# release card and context
def disconnect
@card.disconnect
@context.release
end
# get ATR
def atr
raise "connect to card to get ATR" unless @card
return @card.info[:atr].unpack("C*")
end
# send APDU and get response
def apdu(request)
raise "connect to card to send APDU" unless @card
begin
response = @card.transmit(request.pack('C*')).unpack("C*")
rescue Smartcard::PCSC::Exception => e
tries = 0 unless tries
tries += 1
if tries <= 3 then
puts "PCSC bug (try #{tries})"
sleep 5
retry
else
raise e if tries>=3
end
end
return response
end
end
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