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 # internal URL so we can find local address of machine and vmware NAT
  29 my $rfid_url = 'http://rfid.koha-dev.vbz.ffzg.hr';
  30
  31 use Getopt::Long;
  32
  33 GetOptions(
  34         'debug!'    => \$debug,
  35         'listen=s', => \$listen,
  36         'reader=s', => \$reader,
  37         'koha=s',       => \$koha_url,
  38 ) || die $!;
  39
  40 our $rfid_sid_cache;
  41
  42 sub rfid_borrower {
  43         my $hash = shift;
  44         if ( my $json = $rfid_sid_cache->{ $hash->{sid} } ) {
  45                 return $json;
  46         }
  47         my $ua = LWP::UserAgent->new;
  48         my $url = URI->new( $koha_url . '/cgi-bin/koha/ffzg/rfid/borrower.pl');
  49         $url->query_form(
  50                   RFID_SID => $hash->{sid}
  51                 , OIB => $hash->{OIB}
  52                 , JMBAG => $hash->{JMBAG}
  53         );
  54         warn "GET ",$url->as_string;
  55         my $response = $ua->get($url);
  56         if ( $response->is_success ) {
  57                 my $json = decode_json $response->decoded_content;
  58                 $rfid_sid_cache->{ $hash->{sid} } = $json;
  59                 return $json;
  60         } else {
  61                 warn "ERROR ", $response->status_line;
  62         }
  63 }
  64
  65 use lib 'lib';
  66 use Biblio::RFID::RFID501;
  67 use Biblio::RFID::Reader;
  68 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
  69
  70 my $index_html;
  71 {
  72         local $/ = undef;
  73         $index_html = <DATA>;
  74         $index_html =~ s{http://koha.example.com:8080}{$koha_url}sg;
  75 }
  76
  77 my $server_url;
  78
  79 sub http_server {
  80
  81         my $server = IO::Socket::INET->new(
  82                 Proto     => 'tcp',
  83                 LocalAddr => $listen,
  84                 Listen    => SOMAXCONN,
  85                 Reuse     => 1
  86         );
  87
  88         die "can't setup server: $!" unless $server;
  89
  90         $server_url = 'http://' . $listen;
  91         print "Server $0 ready at $server_url\n";
  92
  93         while (my $client = $server->accept()) {
  94
  95             eval { # don't die inside here!
  96
  97                 $client->autoflush(1);
  98                 my $request = <$client>;
  99
 100                 warn "WEB << $request\n" if $debug;
 101                 my $path;
 102
 103                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
 104                         my $method = $1;
 105                         my $param;
 106                         if ( $method =~ s{\?(.+)}{} ) {
 107                                 foreach my $p ( split(/[&;]/, $1) ) {
 108                                         my ($n,$v) = split(/=/, $p, 2);
 109                                         $param->{$n} = $v;
 110                                 }
 111                                 warn "WEB << param: ",dump( $param ) if $debug;
 112                         }
 113                         $path = $method;
 114
 115                         if ( $path eq '/' ) {
 116                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 117                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 118                                 $path = $1; # FIXME prefix with dir for installation
 119                                 my $size = -s $path;
 120                                 warn "static $path $size bytes\n";
 121                                 my $content_type = 'text/plain';
 122                                 $content_type = 'application/javascript' if $path =~ /\.js/;
 123                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 124                                 {
 125                                         local $/ = undef;
 126                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 127                                         while(<$fh>) {
 128                                                 print $client $_;
 129                                         }
 130                                         close($fh);
 131                                 }
 132                         } elsif ( $method =~ m{/scan} ) {
 133                                 my @tags = $rfid->tags;
 134                                 my $json = { time => time() };
 135                                 foreach my $tag ( @tags ) {
 136                                         my $hash = $rfid->to_hash( $tag );
 137                                         $hash->{sid}  = $tag;
 138                                         $hash->{reader} = $rfid->from_reader( $tag );
 139                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 140                                                 my $borrower = rfid_borrower $hash;
 141                                                 if ( exists $borrower->{error} ) {
 142                                                         warn "ERROR ", dump($borrower);
 143                                                 } else {
 144                                                         $hash->{borrower} = $borrower->{borrower};
 145                                                         $hash->{content}  = $borrower->{borrower}->{cardnumber}; # compatibile with 3M tags
 146                                                 }
 147                                         } else {
 148                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 149                                         }
 150                                         push @{ $json->{tags} }, $hash;
 151                                 };
 152                                 warn "#### ", encode_json($json);
 153                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 154                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 155                         } elsif ( $method =~ m{/program} ) {
 156
 157                                 my $status = 501; # Not implementd
 158
 159                                 foreach my $p ( keys %$param ) {
 160                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 161                                         my $tag = $1;
 162                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 163                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 164                                         $status = 302;
 165
 166                                         warn "PROGRAM $tag $content\n";
 167                                         $rfid->write_blocks( $tag => $content );
 168                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? 0xDA : 0xD7 ) );
 169                                 }
 170
 171                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 172
 173                         } elsif ( $method =~ m{/secure(.js)} ) {
 174
 175                                 my $json = $1;
 176
 177                                 my $status = 501; # Not implementd
 178
 179                                 foreach my $p ( keys %$param ) {
 180                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 181                                         my $tag = $1;
 182                                         my $data = $param->{$p};
 183                                         $status = 302;
 184
 185                                         warn "SECURE $tag $data\n";
 186                                         $rfid->write_afi( $tag => chr(hex($data)) );
 187                                 }
 188
 189                                 if ( $json ) {
 190                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 191                                                 $param->{callback}, "({ ok: 1 })\r\n";
 192                                 } else {
 193                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 194                                 }
 195
 196                         } else {
 197                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 198                         }
 199                 } else {
 200                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 201                 }
 202                 close $client;
 203
 204             }; # end of eval
 205             if ( $@ ) {
 206                 print $client "HTTP/1.0 500 Error\r\n\r\nContent-Type: text/plain\r\n$@";
 207                 warn "ERROR: $@";
 208             }
 209
 210         }
 211
 212         die "server died";
 213 }
 214
 215 sub rfid_register {
 216         my $ip;
 217
 218         foreach ( split(/\n/, `ip addr` ) ) {
 219                 if ( /^\d:\s(\w+):\s/ ) {
 220                         $ip->{last} = $1;
 221                 } elsif ( /^\s+inet\s((\d+)\.(\d+)\.(\d+)\.(\d+))\/(\d+)/ ) {
 222                         $ip->{ $ip->{last} } = $1;
 223                 } else {
 224                         warn "# SKIP [$_]\n";
 225                 }
 226
 227         }
 228
 229         my $ua = LWP::UserAgent->new;
 230         my $url = URI->new( $rfid_url . '/register.pl');
 231         $url->query_form(
 232                 local_ip => $ip->{eth0},
 233         );
 234         warn "GET ",$url->as_string;
 235         my $response = $ua->get($url);
 236         if ( $response->is_success ) {
 237                 warn "# ", $response->decoded_content;
 238                 my $json = decode_json $response->decoded_content;
 239                 warn "REGISTER: ",dump($json);
 240                 return $json;
 241         } else {
 242                 warn "ERROR ", $response->status_line;
 243         }
 244 }
 245
 246 rfid_register;
 247 http_server;
 248
 249 __DATA__
 250 <html>
 251 <head>
 252 <title>RFID JSONP</title>
 253 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 254 <style type="text/css">
 255 .status {
 256         background: #ff8;
 257 }
 258
 259 .da {
 260         background: #fcc;
 261 }
 262
 263 .d7 {
 264         background: #cfc;
 265 }
 266
 267 label[for=pull-reader] {
 268         position: absolute;
 269         top: 1em;
 270         right: 1em;
 271         background: #eee;
 272 }
 273
 274 </style>
 275 <script type="text/javascript">
 276
 277 // mock console
 278 if(!window.console) {
 279         window.console = new function() {
 280                 this.info = function(str) {};
 281                 this.debug = function(str) {};
 282         };
 283 }
 284
 285
 286 function got_visible_tags(data,textStatus) {
 287         var html = 'No tags in range';
 288         if ( data.tags ) {
 289                 html = '<ul class="tags">';
 290                 $.each(data.tags, function(i,tag) {
 291                         console.debug( i, tag );
 292                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 293                         var content = tag.content || tag.borrower.cardnumber;
 294
 295                         if ( content ) {
 296                                 html += ' <a href="http://koha.example.com:8080/cgi-bin/koha/';
 297                                 if ( tag.type == 1 ) { // book
 298                                         html += 'catalogue/search.pl?q=';
 299                                 } else {
 300                                         html += 'members/member.pl?member=';
 301                                 }
 302                                 html += content + '" title="lookup in Koha" target="koha-lookup">' + content + '</a>';
 303                                 html += '</tt>';
 304 /*
 305                                 html += '<form method=get action=program style="display:inline">'
 306                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 307                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 308                                         + '</form>'
 309                                 ;
 310 */
 311                         } else {
 312                                 html += '</tt>';
 313                                 html += ' <form method=get action=program style="display:inline">'
 314                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 315                                         + '<input type=text name='+tag.sid+' size=12>'
 316                                         + '<input type=submit value="Program">'
 317                                         + '</form>'
 318                                 ;
 319                         }
 320                 });
 321                 html += '</ul>';
 322         }
 323
 324         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 325
 326         html = '<div class=status>'
 327                 + textStatus
 328                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 329                 + '</div>'
 330                 + html
 331                 ;
 332         $('#tags').html( html );
 333         window.setTimeout(function(){
 334                 scan_tags();
 335         },200); // re-scan every 200ms
 336 };
 337
 338 function scan_tags() {
 339         console.info('scan_tags');
 340         if ( $('input#pull-reader').attr('checked') )
 341                 $.getJSON("/scan?callback=?", got_visible_tags);
 342 }
 343
 344 $(document).ready(function() {
 345                 $('input#pull-reader').click( function() {
 346                         scan_tags();
 347                 });
 348                 $('input#pull-reader').attr('checked', true); // force check on load
 349
 350                 $('div#tags').click( function() {
 351                         $('input#pull-reader').attr('checked', false);
 352                 } );
 353
 354                 scan_tags();
 355 });
 356 </script>
 357 </head>
 358 <body>
 359
 360 <h1>RFID tags in range</h1>
 361
 362 <label for=pull-reader>
 363 <input id=pull-reader type=checkbox checked=1>
 364 active
 365 </label>
 366
 367 <div id="tags">
 368 RFID reader not found or driver program not started.
 369 </div>
 370
 371 </body>
 372 </html>