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 my $koha_url = 'http://ffzg.koha-dev.rot13.org:8080';
  28
  29 use Getopt::Long;
  30
  31 GetOptions(
  32         'debug!'    => \$debug,
  33         'listen=s', => \$listen,
  34         'reader=s', => \$reader,
  35         'koha=s',       => \$koha_url,
  36 ) || die $!;
  37
  38 our $rfid_sid_cache;
  39
  40 sub rfid_borrower {
  41         my $hash = shift;
  42         if ( my $json = $rfid_sid_cache->{ $hash->{sid} } ) {
  43                 return $json;
  44         }
  45         my $ua = LWP::UserAgent->new;
  46         my $url = URI->new( $koha_url . '/cgi-bin/koha/ffzg/rfid-borrower.pl');
  47         $url->query_form(
  48                   RFID_SID => $hash->{sid}
  49                 , OIB => $hash->{OIB}
  50                 , JMBAG => $hash->{JMBAG}
  51         );
  52         warn "GET ",$url->as_string;
  53         my $response = $ua->get($url);
  54         if ( $response->is_success ) {
  55                 my $json = decode_json $response->decoded_content;
  56                 $rfid_sid_cache->{ $hash->{sid} } = $json;
  57                 return $json;
  58         } else {
  59                 warn "ERROR ", $response->status_line;
  60         }
  61 }
  62
  63 use lib 'lib';
  64 use Biblio::RFID::RFID501;
  65 use Biblio::RFID::Reader;
  66 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
  67
  68 my $index_html;
  69 {
  70         local $/ = undef;
  71         $index_html = <DATA>;
  72         $index_html =~ s{http://koha.example.com:8080}{$koha_url}sg;
  73 }
  74
  75 my $server_url;
  76
  77 sub http_server {
  78
  79         my $server = IO::Socket::INET->new(
  80                 Proto     => 'tcp',
  81                 LocalAddr => $listen,
  82                 Listen    => SOMAXCONN,
  83                 Reuse     => 1
  84         );
  85
  86         die "can't setup server: $!" unless $server;
  87
  88         $server_url = 'http://' . $listen;
  89         print "Server $0 ready at $server_url\n";
  90
  91         while (my $client = $server->accept()) {
  92                 $client->autoflush(1);
  93                 my $request = <$client>;
  94
  95                 warn "WEB << $request\n" if $debug;
  96                 my $path;
  97
  98                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
  99                         my $method = $1;
 100                         my $param;
 101                         if ( $method =~ s{\?(.+)}{} ) {
 102                                 foreach my $p ( split(/[&;]/, $1) ) {
 103                                         my ($n,$v) = split(/=/, $p, 2);
 104                                         $param->{$n} = $v;
 105                                 }
 106                                 warn "WEB << param: ",dump( $param ) if $debug;
 107                         }
 108                         $path = $method;
 109
 110                         if ( $path eq '/' ) {
 111                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 112                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 113                                 $path = $1; # FIXME prefix with dir for installation
 114                                 my $size = -s $path;
 115                                 warn "static $path $size bytes\n";
 116                                 my $content_type = 'text/plain';
 117                                 $content_type = 'application/javascript' if $path =~ /\.js/;
 118                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 119                                 {
 120                                         local $/ = undef;
 121                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 122                                         while(<$fh>) {
 123                                                 print $client $_;
 124                                         }
 125                                         close($fh);
 126                                 }
 127                         } elsif ( $method =~ m{/scan} ) {
 128                                 my @tags = $rfid->tags;
 129                                 my $json = { time => time() };
 130                                 foreach my $tag ( @tags ) {
 131                                         my $hash = $rfid->to_hash( $tag );
 132                                         $hash->{sid}  = $tag;
 133                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 134                                                 my $borrower = rfid_borrower $hash;
 135                                                 if ( exists $borrower->{error} ) {
 136                                                         warn "ERROR ", dump($borrower);
 137                                                 } else {
 138                                                         $hash->{borrower} = $borrower->{borrower};
 139                                                 }
 140                                         } else {
 141                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 142                                         }
 143                                         push @{ $json->{tags} }, $hash;
 144                                 };
 145                                 warn "#### ", encode_json($json);
 146                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 147                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 148                         } elsif ( $method =~ m{/program} ) {
 149
 150                                 my $status = 501; # Not implementd
 151
 152                                 foreach my $p ( keys %$param ) {
 153                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 154                                         my $tag = $1;
 155                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 156                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 157                                         $status = 302;
 158
 159                                         warn "PROGRAM $tag $content\n";
 160                                         $rfid->write_blocks( $tag => $content );
 161                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? 0xDA : 0xD7 ) );
 162                                 }
 163
 164                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 165
 166                         } elsif ( $method =~ m{/secure(.js)} ) {
 167
 168                                 my $json = $1;
 169
 170                                 my $status = 501; # Not implementd
 171
 172                                 foreach my $p ( keys %$param ) {
 173                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 174                                         my $tag = $1;
 175                                         my $data = $param->{$p};
 176                                         $status = 302;
 177
 178                                         warn "SECURE $tag $data\n";
 179                                         $rfid->write_afi( $tag => hex($data) );
 180                                 }
 181
 182                                 if ( $json ) {
 183                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 184                                                 $param->{callback}, "({ ok: 1 })\r\n";
 185                                 } else {
 186                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 187                                 }
 188
 189                         } else {
 190                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 191                         }
 192                 } else {
 193                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 194                 }
 195                 close $client;
 196         }
 197
 198         die "server died";
 199 }
 200
 201 http_server;
 202
 203 __DATA__
 204 <html>
 205 <head>
 206 <title>RFID JSONP</title>
 207 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 208 <style type="text/css">
 209 .status {
 210         background: #ff8;
 211 }
 212
 213 .da {
 214         background: #fcc;
 215 }
 216
 217 .d7 {
 218         background: #cfc;
 219 }
 220
 221 label[for=pull-reader] {
 222         position: absolute;
 223         top: 1em;
 224         right: 1em;
 225         background: #eee;
 226 }
 227
 228 </style>
 229 <script type="text/javascript">
 230
 231 // mock console
 232 if(!window.console) {
 233         window.console = new function() {
 234                 this.info = function(str) {};
 235                 this.debug = function(str) {};
 236         };
 237 }
 238
 239
 240 function got_visible_tags(data,textStatus) {
 241         var html = 'No tags in range';
 242         if ( data.tags ) {
 243                 html = '<ul class="tags">';
 244                 $.each(data.tags, function(i,tag) {
 245                         console.debug( i, tag );
 246                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 247                         var borrowernumber = tag.content || tag.borrower.cardnumber;
 248
 249                         if ( borrowernumber ) {
 250                                 html += ' <a href="http://koha.example.com:8080/cgi-bin/koha/members/member.pl?member=' + borrowernumber + '" title="lookup in Koha" target="koha-lookup">' + borrowernumber + '</a>';
 251                                 html += '</tt>';
 252 /*
 253                                 html += '<form method=get action=program style="display:inline">'
 254                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 255                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 256                                         + '</form>'
 257                                 ;
 258 */
 259                         } else {
 260                                 html += '</tt>';
 261                                 html += ' <form method=get action=program style="display:inline">'
 262                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 263                                         + '<input type=text name='+tag.sid+' size=12>'
 264                                         + '<input type=submit value="Program">'
 265                                         + '</form>'
 266                                 ;
 267                         }
 268                 });
 269                 html += '</ul>';
 270         }
 271
 272         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 273
 274         html = '<div class=status>'
 275                 + textStatus
 276                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 277                 + '</div>'
 278                 + html
 279                 ;
 280         $('#tags').html( html );
 281         window.setTimeout(function(){
 282                 scan_tags();
 283         },200); // re-scan every 200ms
 284 };
 285
 286 function scan_tags() {
 287         console.info('scan_tags');
 288         if ( $('input#pull-reader').attr('checked') )
 289                 $.getJSON("/scan?callback=?", got_visible_tags);
 290 }
 291
 292 $(document).ready(function() {
 293                 $('input#pull-reader').click( function() {
 294                         scan_tags();
 295                 });
 296                 $('input#pull-reader').attr('checked', true); // force check on load
 297
 298                 $('div#tags').click( function() {
 299                         $('input#pull-reader').attr('checked', false);
 300                 } );
 301
 302                 scan_tags();
 303 });
 304 </script>
 305 </head>
 306 <body>
 307
 308 <h1>RFID tags in range</h1>
 309
 310 <label for=pull-reader>
 311 <input id=pull-reader type=checkbox checked=1>
 312 active
 313 </label>
 314
 315 <div id="tags">
 316 RFID reader not found or driver program not started.
 317 </div>
 318
 319 </body>
 320 </html>