decode RLE encoded card holder information

diff --git a/mifare-mad.pl b/mifare-mad.pl
index 5ae4481..19f957a 100755 (executable)
--- a/mifare-mad.pl
+++ b/mifare-mad.pl
@@ -44,4 +44,26 @@ foreach my $i ( 0 .. 15 ) {
                my $block = substr($card, $offset, 0x10);
                printf "%04x %s\n", $offset, unpack('H*',$block);
        }
                my $block = substr($card, $offset, 0x10);
                printf "%04x %s\n", $offset, unpack('H*',$block);
        }

+
+       if ( $v == 0x0004 ) {
+               # RLE encoded card holder information
+               my $data = substr( $card, 0x40 * $i, 0x30);
+               my $o = 0;
+               my $types = {
+                       0b00 => 'surname',
+                       0b01 => 'given name',
+                       0b10 => 'sex',
+                       0b11 => 'any',
+               };
+               while ( substr($data,$o,1) ne "\x00" ) {
+                       my $len = ord(substr($data,$o,1));
+                       my $type = ( $len & 0b11000000 ) >> 6;
+                       $len     =   $len & 0b00111111;
+                       my $dump = substr($data,$o+1,$len-1);
+                       $dump = '0x' . unpack('H*', $dump) if $type == 0b11; # any
+                       printf "%-10s %2d %s\n", $types->{$type}, $len, $dump;
+                       $o += $len + 1;
+               }
+       }
+

 }
 }