#!/usr/bin/env perl

#    scriptor.pl: text interface to send APDU commands to a smart card
#    Copyright (C) 2001  Lionel Victor
#             2002-2008  Ludovic Rousseau
#
#    This program 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 2 of the License, or
#    (at your option) any later version.
#
#    This program 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 this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# $Id: scriptor,v 1.22 2008-05-11 13:28:44 rousseau Exp $

use Getopt::Std;
use Chipcard::PCSC;
use Chipcard::PCSC::Card;

use strict;
use warnings;

my %options;

my $hContext = new Chipcard::PCSC();
my $hCard;
my @out_buffer;
my $in_buffer;
my $echo;

die ("Could not create Chipcard::PCSC object: $Chipcard::PCSC::errno\n") unless defined $hContext;

getopt ("r:p:" , \%options);

if ($options{h}) {
	print "Usage: $0 [-h] [-r reader] [-p protocol] [file]\n";
	print "          -h: this help\n";
	print "   -r reader: specify to use the PCSC smart card reader named reader\n";
	print "              By defaults the first one found is used so you\n";
	print "              don't have to specify anything if you just have\n";
	print "              one reader\n";
	print " -p protocol: protocol to use among T=0 and T=1.\n";
	print "              Default is to let pcsc-lite choose the protocol\n";
	print "        file: file containing APDUs\n";
	exit (0);
}

# protocol option
if ($options{p}) {
	if ($options{p} =~ m/T=0/) {
		print STDERR "Trying T=0 protocol\n";
		$options{p} = $Chipcard::PCSC::SCARD_PROTOCOL_T0;
	} else {
		if ($options{p} =~ m/T=1/) {
			print STDERR "Trying T=1 protocol\n";
			$options{p} = $Chipcard::PCSC::SCARD_PROTOCOL_T1;
		} else {
			die "unknown protocol: $options{p}\n";
		}
	}
} else {
	$options{p} = $Chipcard::PCSC::SCARD_PROTOCOL_T0 | $Chipcard::PCSC::SCARD_PROTOCOL_T1;
}

# reader option
if ($options{r}) {
	print STDERR "Using given card reader: $options{r}\n";
} else {
	my @readers_list = $hContext->ListReaders ();
	die ("Can't get readers list\n") unless defined $readers_list[0];
	print STDERR "No reader given: using $readers_list[0]\n";
	$options{r} = $readers_list[0];
}

$hCard = new Chipcard::PCSC::Card ($hContext, $options{r}, $Chipcard::PCSC::SCARD_SHARE_SHARED, $options{p});
die ("Can't allocate Chipcard::PCSC::Card object: $Chipcard::PCSC::errno\n") unless defined $hCard;

if ($hCard->{dwProtocol} == $Chipcard::PCSC::SCARD_PROTOCOL_T0) {
	print "Using T=0 protocol\n";
} else {
	if ($hCard->{dwProtocol} == $Chipcard::PCSC::SCARD_PROTOCOL_T1) {
		print "Using T=1 protocol\n";
	}
	else {
		print "Using an unknown protocol (not T=0 or T=1)\n";
	}
}

# file option
if ($ARGV[0]) {
	open (IN_FILEHANDLE, "<$ARGV[0]") or die ("Can't open $ARGV[0]: $!\n");
	print STDERR "Using given file: $ARGV[0]\n";
	$echo=1;
} else {
	*IN_FILEHANDLE = *STDIN;
	print STDERR "Reading commands from STDIN\n";
	$echo=0;
}

*OUT_FILEHANDLE = *STDOUT;

my $cmd;
my $match = ".. " x 24;
while (<IN_FILEHANDLE>) {
	my $tmp_value;
	my ($SendData, $RecvData, $sw);

	print if ($echo);
	last if /exit/i;
	next if /^\s*$/;
	next if /^#/;

	if (/reset/i) {
		print OUT_FILEHANDLE "> RESET\n";
		if (defined $hCard->Reconnect ($Chipcard::PCSC::SCARD_SHARE_SHARED,
		                   $options{p},
						   $Chipcard::PCSC::SCARD_RESET_CARD)) {
			my @s = $hCard->Status();
			print OUT_FILEHANDLE "< OK: ";
			print map { sprintf ("%02X ", $_) } @{$s[3]};
			print OUT_FILEHANDLE "\n";
		} else {
			print OUT_FILEHANDLE "< KO: $Chipcard::PCSC::errno\n";
		}
		next;
	}
	chomp;

	# if the command does not contains spaces (00A4030000) we expand it
	s/(..)/$1 /g if (! m/ /);

	# continue if line ends in \
	if (m/\\$/)
	{
		chop;	# remove the \
		s/ *$/ /;	# replace any spaces by ONE space
		$cmd .= $_;
		next;	# read next line
	}

	$cmd .= $_;

	# convert in an array (internal format)
	$SendData = Chipcard::PCSC::ascii_to_array($cmd);

	print OUT_FILEHANDLE "> $cmd\n";
	$RecvData = $hCard->Transmit($SendData);
	die ("Can't get info: $Chipcard::PCSC::errno\n") unless defined $RecvData;
	my $res = Chipcard::PCSC::array_to_ascii($RecvData);
	$sw = Chipcard::PCSC::Card::ISO7816Error(substr($res, -5));
	$res =~ s/($match)/$1\n/g;
	print OUT_FILEHANDLE "< $res : $sw\n";

	# empty the command
	$cmd = "";
}

close (IN_FILEHANDLE);
$hCard->Disconnect($Chipcard::PCSC::SCARD_LEAVE_CARD);
$hCard = undef;
$hContext = undef;

# End of File