scripts/RFID-JSONP-server.pl

   1 #!/usr/bin/perl
   2
   3 =head1 NAME
   4
   5 RFID-JSONP-server - simpliest possible JSONP server which provides local web interface to RFID readers
   6
   7 =head1 USAGE
   8
   9   ./scripts/RFID-JSONP-server.pl [--debug] [--listen=127.0.0.1:9000] [--reader=filter]
  10
  11 =cut
  12
  13 use strict;
  14 use warnings;
  15
  16 use Data::Dump qw/dump/;
  17
  18 use JSON::XS;
  19 use IO::Socket::INET;
  20 use LWP::UserAgent;
  21 use URI;
  22
  23 my $debug = 1;
  24 my $listen = '127.0.0.1:9000';
  25 $listen = ':9000';
  26 my $reader;
  27
  28 use Getopt::Long;
  29
  30 GetOptions(
  31         'debug!'    => \$debug,
  32         'listen=s', => \$listen,
  33         'reader=s', => \$reader,
  34 ) || die $!;
  35
  36 our $rfid_sid_cache;
  37
  38 sub rfid_borrower {
  39         my $hash = shift;
  40         if ( my $json = $rfid_sid_cache->{ $hash->{sid} } ) {
  41                 return $json;
  42         }
  43         my $ua = LWP::UserAgent->new;
  44         my $url = URI->new('http://ffzg.koha-dev.rot13.org:8080/cgi-bin/koha/ffzg/rfid-borrower.pl');
  45         $url->query_form(
  46                   RFID_SID => $hash->{sid}
  47                 , OIB => $hash->{OIB}
  48                 , JMBAG => $hash->{JMBAG}
  49         );
  50         warn "GET ",$url->as_string;
  51         my $response = $ua->get($url);
  52         if ( $response->is_success ) {
  53                 my $json = decode_json $response->decoded_content;
  54                 $rfid_sid_cache->{ $hash->{sid} } = $json;
  55                 return $json;
  56         } else {
  57                 warn "ERROR ", $response->status_line;
  58         }
  59 }
  60
  61 use lib 'lib';
  62 use Biblio::RFID::RFID501;
  63 use Biblio::RFID::Reader;
  64 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
  65
  66 my $index_html;
  67 {
  68         local $/ = undef;
  69         $index_html = <DATA>;
  70 }
  71
  72 my $server_url;
  73
  74 sub http_server {
  75
  76         my $server = IO::Socket::INET->new(
  77                 Proto     => 'tcp',
  78                 LocalAddr => $listen,
  79                 Listen    => SOMAXCONN,
  80                 Reuse     => 1
  81         );
  82
  83         die "can't setup server: $!" unless $server;
  84
  85         $server_url = 'http://' . $listen;
  86         print "Server $0 ready at $server_url\n";
  87
  88         while (my $client = $server->accept()) {
  89                 $client->autoflush(1);
  90                 my $request = <$client>;
  91
  92                 warn "WEB << $request\n" if $debug;
  93                 my $path;
  94
  95                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
  96                         my $method = $1;
  97                         my $param;
  98                         if ( $method =~ s{\?(.+)}{} ) {
  99                                 foreach my $p ( split(/[&;]/, $1) ) {
 100                                         my ($n,$v) = split(/=/, $p, 2);
 101                                         $param->{$n} = $v;
 102                                 }
 103                                 warn "WEB << param: ",dump( $param ) if $debug;
 104                         }
 105                         $path = $method;
 106
 107                         if ( $path eq '/' ) {
 108                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 109                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 110                                 $path = $1; # FIXME prefix with dir for installation
 111                                 my $size = -s $path;
 112                                 warn "static $path $size bytes\n";
 113                                 my $content_type = 'text/plain';
 114                                 $content_type = 'application/javascript' if $path =~ /\.js/;
 115                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 116                                 {
 117                                         local $/ = undef;
 118                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 119                                         while(<$fh>) {
 120                                                 print $client $_;
 121                                         }
 122                                         close($fh);
 123                                 }
 124                         } elsif ( $method =~ m{/scan} ) {
 125                                 my @tags = $rfid->tags;
 126                                 my $json = { time => time() };
 127                                 foreach my $tag ( @tags ) {
 128                                         my $hash = $rfid->to_hash( $tag );
 129                                         $hash->{sid}  = $tag;
 130                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 131                                                 my $borrower = rfid_borrower $hash;
 132                                                 if ( exists $borrower->{error} ) {
 133                                                         warn "ERROR ", dump($borrower);
 134                                                 } else {
 135                                                         $hash->{borrower} = $borrower->{borrower};
 136                                                 }
 137                                         } else {
 138                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 139                                         }
 140                                         push @{ $json->{tags} }, $hash;
 141                                 };
 142                                 warn "#### ", encode_json($json);
 143                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 144                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 145                         } elsif ( $method =~ m{/program} ) {
 146
 147                                 my $status = 501; # Not implementd
 148
 149                                 foreach my $p ( keys %$param ) {
 150                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 151                                         my $tag = $1;
 152                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 153                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 154                                         $status = 302;
 155
 156                                         warn "PROGRAM $tag $content\n";
 157                                         $rfid->write_blocks( $tag => $content );
 158                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? 0xDA : 0xD7 ) );
 159                                 }
 160
 161                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 162
 163                         } elsif ( $method =~ m{/secure(.js)} ) {
 164
 165                                 my $json = $1;
 166
 167                                 my $status = 501; # Not implementd
 168
 169                                 foreach my $p ( keys %$param ) {
 170                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 171                                         my $tag = $1;
 172                                         my $data = $param->{$p};
 173                                         $status = 302;
 174
 175                                         warn "SECURE $tag $data\n";
 176                                         $rfid->write_afi( $tag => hex($data) );
 177                                 }
 178
 179                                 if ( $json ) {
 180                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 181                                                 $param->{callback}, "({ ok: 1 })\r\n";
 182                                 } else {
 183                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 184                                 }
 185
 186                         } else {
 187                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 188                         }
 189                 } else {
 190                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 191                 }
 192                 close $client;
 193         }
 194
 195         die "server died";
 196 }
 197
 198 http_server;
 199
 200 __DATA__
 201 <html>
 202 <head>
 203 <title>RFID JSONP</title>
 204 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 205 <style type="text/css">
 206 .status {
 207         background: #ff8;
 208 }
 209
 210 .da {
 211         background: #fcc;
 212 }
 213
 214 .d7 {
 215         background: #cfc;
 216 }
 217
 218 label[for=pull-reader] {
 219         position: absolute;
 220         top: 1em;
 221         right: 1em;
 222         background: #eee;
 223 }
 224
 225 </style>
 226 <script type="text/javascript">
 227
 228 // mock console
 229 if(!window.console) {
 230         window.console = new function() {
 231                 this.info = function(str) {};
 232                 this.debug = function(str) {};
 233         };
 234 }
 235
 236
 237 function got_visible_tags(data,textStatus) {
 238         var html = 'No tags in range';
 239         if ( data.tags ) {
 240                 html = '<ul class="tags">';
 241                 $.each(data.tags, function(i,tag) {
 242                         console.debug( i, tag );
 243                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 244                         var borrowernumber = tag.content || tag.borrower.cardnumber;
 245
 246                         if ( borrowernumber ) {
 247                                 html += ' <a href="http://ffzg.koha-dev.rot13.org:8080/cgi-bin/koha/members/member.pl?member=' + borrowernumber + '" title="lookup in Koha" target="koha-lookup">' + borrowernumber + '</a>';
 248                                 html += '</tt>';
 249 /*
 250                                 html += '<form method=get action=program style="display:inline">'
 251                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 252                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 253                                         + '</form>'
 254                                 ;
 255 */
 256                         } else {
 257                                 html += '</tt>';
 258                                 html += ' <form method=get action=program style="display:inline">'
 259                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 260                                         + '<input type=text name='+tag.sid+' size=12>'
 261                                         + '<input type=submit value="Program">'
 262                                         + '</form>'
 263                                 ;
 264                         }
 265                 });
 266                 html += '</ul>';
 267         }
 268
 269         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 270
 271         html = '<div class=status>'
 272                 + textStatus
 273                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 274                 + '</div>'
 275                 + html
 276                 ;
 277         $('#tags').html( html );
 278         window.setTimeout(function(){
 279                 scan_tags();
 280         },200); // re-scan every 200ms
 281 };
 282
 283 function scan_tags() {
 284         console.info('scan_tags');
 285         if ( $('input#pull-reader').attr('checked') )
 286                 $.getJSON("/scan?callback=?", got_visible_tags);
 287 }
 288
 289 $(document).ready(function() {
 290                 $('input#pull-reader').click( function() {
 291                         scan_tags();
 292                 });
 293                 $('input#pull-reader').attr('checked', true); // force check on load
 294
 295                 $('div#tags').click( function() {
 296                         $('input#pull-reader').attr('checked', false);
 297                 } );
 298
 299                 scan_tags();
 300 });
 301 </script>
 302 </head>
 303 <body>
 304
 305 <h1>RFID tags in range</h1>
 306
 307 <label for=pull-reader>
 308 <input id=pull-reader type=checkbox checked=1>
 309 active
 310 </label>
 311
 312 <div id="tags">
 313 RFID reader not found or driver program not started.
 314 </div>
 315
 316 </body>
 317 </html>