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 use POSIX qw(strftime);
  23 use Encode;
  24
  25 my $debug = 0;
  26 my $listen = '127.0.0.1:9000';
  27 $listen = ':9000';
  28 my $reader;
  29 my $koha_url = $ENV{KOHA_URL};
  30 warn "$koha_url";
  31 # internal URL so we can find local address of machine and vmware NAT
  32 my $rfid_url = $ENV{RFID_URL};
  33 my $sip2 = {
  34         server   => $ENV{SIP2_SERVER}, # '10.60.0.11:6002' must be IP!
  35         user     => $ENV{SIP2_USER},
  36         password => $ENV{SIP2_PASSWORD},
  37         loc      => $ENV{SIP2_LOC},
  38 };
  39 my $afi = {
  40         secure   => 0xDA,
  41         unsecure => 0xD7,
  42 };
  43
  44 use Getopt::Long;
  45
  46 GetOptions(
  47         'debug!'    => \$debug,
  48         'listen=s', => \$listen,
  49         'reader=s', => \$reader,
  50 ) || die $!;
  51
  52 die "need KOHA_URL, eg. http://ffzg.koha-dev.rot13.org:8080" unless $koha_url;
  53
  54 our $rfid_sid_cache;
  55
  56 sub rfid_borrower {
  57         my $hash = shift;
  58         if ( my $json = $rfid_sid_cache->{ $hash->{sid} } ) {
  59                 return $json;
  60         }
  61         my $ua = LWP::UserAgent->new;
  62         my $url = URI->new( $koha_url . '/cgi-bin/koha/ffzg/rfid/borrower.pl');
  63         $url->query_form(
  64                   RFID_SID => $hash->{sid}
  65                 , OIB => $hash->{OIB}
  66                 , JMBAG => $hash->{JMBAG}
  67         );
  68         warn "GET ",$url->as_string;
  69         my $response = $ua->get($url);
  70         if ( $response->is_success ) {
  71                 my $json = decode_json $response->decoded_content;
  72                 $rfid_sid_cache->{ $hash->{sid} } = $json;
  73                 return $json;
  74         } else {
  75                 warn "ERROR ", $response->status_line;
  76         }
  77 }
  78
  79
  80 sub sip2_message {
  81         my $send = shift;
  82
  83         my $sock = $sip2->{sock} || die "no sip2 socket";
  84
  85         local $/ = "\r";
  86
  87         $send .= "\r" unless $send =~ m/\r$/;
  88         warn "SIP2 >>>> ",dump($send), "\n";
  89         print $sock $send;
  90         $sock->flush;
  91
  92         my $expect = substr($send,0,2) | 0x01;
  93
  94         my $in = <$sock>;
  95         $in =~ s/^\n//;
  96         warn "SIP2 <<<< ",dump($in), "\n";
  97
  98         die "expected $expect" unless substr($in,0,2) != $expect;
  99
 100         $in =~ s/\r$//;
 101
 102         my $hash;
 103         if ( $in =~ s/^([0-9\s]+)// ) {
 104                 $hash->{fixed} = $1;
 105         }
 106         foreach ( split(/\|/, $in ) ) {
 107                 my ( $f, $v ) = ( $1, $2 ) if m/([A-Z]{2})(.+)/;
 108                 $hash->{$f} = decode('utf-8',$v);
 109         }
 110
 111         warn "# sip2 hash response ",dump($hash);
 112
 113         return $hash;
 114 }
 115
 116 if ( my $server = $sip2->{server} ) {
 117         my $sock = $sip2->{sock} = IO::Socket::INET->new( $server ) || die "can't connect to $server: $!";
 118         warn "SIP2 server ", $sock->peerhost, ":", $sock->peerport, "\n";
 119
 120         # login
 121         if ( sip2_message("9300CN$sip2->{user}|CO$sip2->{password}|")->{fixed} !~ m/^941/ ) {
 122                 die "SIP2 login failed";
 123         }
 124
 125 }
 126
 127 use lib 'lib';
 128 use Biblio::RFID::RFID501;
 129 use Biblio::RFID::Reader;
 130 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
 131 $rfid->debug( $debug );
 132
 133 my $index_html;
 134 {
 135         local $/ = undef;
 136         $index_html = <DATA>;
 137         $index_html =~ s{http://koha.example.com:8080}{$koha_url}sg;
 138 }
 139
 140 my $server_url;
 141
 142 sub http_server {
 143
 144         my $server = IO::Socket::INET->new(
 145                 Proto     => 'tcp',
 146                 LocalAddr => $listen,
 147                 Listen    => SOMAXCONN,
 148                 Reuse     => 1
 149         );
 150
 151         die "can't setup server: $!" unless $server;
 152
 153         $server_url = 'http://' . $listen;
 154         print "Server $0 ready at $server_url\n";
 155
 156         while (my $client = $server->accept()) {
 157
 158             eval { # don't die inside here!
 159
 160                 $client->autoflush(1);
 161                 my $request = <$client>;
 162
 163                 warn "WEB << $request\n" if $debug;
 164                 my $path;
 165
 166                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
 167                         my $method = $1;
 168                         my $param;
 169                         if ( $method =~ s{\?(.+)}{} ) {
 170                                 foreach my $p ( split(/[&;]/, $1) ) {
 171                                         my ($n,$v) = split(/=/, $p, 2);
 172                                         $param->{$n} = $v;
 173                                 }
 174                                 warn "WEB << param: ",dump( $param ) if $debug;
 175                         }
 176                         $path = $method;
 177
 178                         if ( $path eq '/' ) {
 179                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 180                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 181                                 $path = $1; # FIXME prefix with dir for installation
 182                                 my $size = -s $path;
 183                                 warn "static $path $size bytes\n";
 184                                 my $content_type = 'text/plain';
 185                                 $content_type = 'application/javascript' if $path =~ /\.js$/;
 186                                 $content_type = 'text/html' if $path =~ /\.html$/;
 187                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 188                                 {
 189                                         local $/ = undef;
 190                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 191                                         while(<$fh>) {
 192                                                 print $client $_;
 193                                         }
 194                                         close($fh);
 195                                 }
 196                         } elsif ( $method =~ m{/scan(/only/(.+))?} ) {
 197                                 my $only = $2;
 198                                 my @tags = $rfid->tags( reader => sub {
 199                                         my $reader = shift;
 200                                         return 1 unless $only;
 201                                         if ( ref($reader) =~ m/$only/i ) {
 202                                                 return 1;
 203                                         }
 204                                         return 0;
 205                                 });
 206                                 my $json = { time => time() };
 207                                 foreach my $tag ( @tags ) {
 208                                         my $hash = $rfid->to_hash( $tag );
 209                                         $hash->{sid}  = $tag;
 210                                         $hash->{reader} = $rfid->from_reader( $tag );
 211                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 212                                                 my $borrower = rfid_borrower $hash;
 213                                                 if ( exists $borrower->{error} ) {
 214                                                         warn "ERROR ", dump($borrower);
 215                                                 } else {
 216                                                         $hash->{borrower} = $borrower->{borrower};
 217                                                         $hash->{content}  = $borrower->{borrower}->{cardnumber}; # compatibile with 3M tags
 218                                                 }
 219                                         } else {
 220                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 221                                         }
 222                                         push @{ $json->{tags} }, $hash;
 223                                 };
 224                                 warn "#### ", encode_json($json);
 225                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 226                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 227                         } elsif ( $method =~ m{/program} ) {
 228
 229                                 my $status = 501; # Not implementd
 230
 231                                 foreach my $p ( keys %$param ) {
 232                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 233                                         my $tag = $1;
 234                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 235                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 236                                         $status = 302;
 237
 238                                         warn "PROGRAM $tag $content\n";
 239                                         $rfid->write_blocks( $tag => $content );
 240                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? $afi->{secure} : $afi->{unsecure} ) );
 241                                 }
 242
 243                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 244
 245                         } elsif ( $method =~ m{/secure(.js)} ) {
 246
 247                                 my $json = $1;
 248
 249                                 my $status = 501; # Not implementd
 250
 251                                 foreach my $p ( keys %$param ) {
 252                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 253                                         my $tag = $1;
 254                                         my $data = $param->{$p};
 255                                         $status = 302;
 256
 257                                         warn "SECURE $tag $data\n";
 258                                         $rfid->write_afi( $tag => chr(hex($data)) );
 259                                 }
 260
 261                                 if ( $json ) {
 262                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 263                                                 $param->{callback}, "({ ok: 1 })\r\n";
 264                                 } else {
 265                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 266                                 }
 267
 268                         } elsif ( $method =~ m{/sip2/(\w+)/(.+)} ) {
 269                                 my ( $method, $args ) = ( $1, $2 );
 270                                 warn "SIP2: $method [$args]";
 271
 272                                 my $ts = strftime('%Y%m%d    %H%M%S', localtime());
 273                                 my $loc      = $sip2->{loc} || die "missing sip->{loc}";
 274                                 my $password = $sip2->{password} || die "missing sip->{password}";
 275
 276                                 my $hash;
 277
 278                                 if ( $method eq 'patron_info' ) {
 279                                         my $patron = $args;
 280                                         $hash = sip2_message("63000${ts}          AO$loc|AA$patron|AC$password|");
 281
 282                                 } elsif ( $method eq 'checkout' ) {
 283                                         my ($patron,$barcode,$sid) = split(/\//, $args, 3);
 284                                         $hash = sip2_message("11YN${ts}                  AO$loc|AA$patron|AB$barcode|AC$password|BON|BIN|");
 285                                         if ( substr( $hash->{fixed}, 2, 1 ) == 1 ) {
 286                                                 $rfid->write_afi( $sid => chr( $afi->{unsecure} ) );
 287                                         }
 288
 289                                 } elsif ( $method eq 'checkin' ) {
 290                                         my ($patron,$barcode,$sid) = split(/\//, $args, 3);
 291                                         $hash = sip2_message("09N${ts}${ts}AP|AO${loc}|AB$barcode|AC|BIN|");
 292                                         if ( substr( $hash->{fixed}, 2, 1 ) == 1 ) {
 293                                                 $rfid->write_afi( $sid => chr( $afi->{secure} ) );
 294                                         }
 295                                 } else {
 296                                         print $client "HTTP/1.0 501 $method not implemented\r\n\r\n";
 297                                         warn "ERROR 501 $request\n";
 298                                 }
 299
 300                                 if ( $hash ) {
 301                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 302                                                 encode_json( $hash );
 303                                 }
 304
 305                         } else {
 306                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 307                                 warn "ERROR 404 $request\n";
 308                         }
 309                 } else {
 310                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 311                         warn "ERROR 500 $request\n";
 312                 }
 313                 close $client;
 314
 315             }; # end of eval
 316             if ( $@ ) {
 317                 print $client "HTTP/1.0 500 Error\r\n\r\nContent-Type: text/plain\r\n$@";
 318                 warn "ERROR: $@";
 319             }
 320
 321         }
 322
 323         die "server died";
 324 }
 325
 326 sub rfid_register {
 327         my $ip;
 328
 329         foreach ( split(/\n/, `ip addr` ) ) {
 330                 if ( /^\d:\s(\w+):\s/ ) {
 331                         $ip->{_last} = $1;
 332                 } elsif ( /^\s+inet\s((\d+)\.(\d+)\.(\d+)\.(\d+))\/(\d+)/ ) {
 333                         $ip->{ $ip->{_last} } = $1;
 334                 } else {
 335                         #warn "# SKIP [$_]\n";
 336                 }
 337         }
 338
 339         warn dump($ip);
 340
 341         my $ua = LWP::UserAgent->new;
 342         my $url = URI->new( $rfid_url . '/register.pl');
 343         $url->query_form(
 344                 local_ip => $ip->{eth0} || $ip->{ (keys %$ip)[0] },
 345         );
 346         warn "GET ",$url->as_string;
 347         my $response = $ua->get($url);
 348         if ( $response->is_success ) {
 349                 warn "# ", $response->decoded_content;
 350                 my $json = decode_json $response->decoded_content;
 351                 warn "REGISTER: ",dump($json);
 352                 return $json;
 353         } else {
 354                 warn "ERROR ", $response->status_line;
 355         }
 356 }
 357
 358 rfid_register if $rfid_url;
 359 http_server;
 360
 361 __DATA__
 362 <html>
 363 <head>
 364 <title>RFID JSONP</title>
 365 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 366 <style type="text/css">
 367 .status {
 368         background: #ff8;
 369 }
 370
 371 .da {
 372         background: #fcc;
 373 }
 374
 375 .d7 {
 376         background: #cfc;
 377 }
 378
 379 label[for=pull-reader] {
 380         position: absolute;
 381         top: 1em;
 382         right: 1em;
 383         background: #eee;
 384 }
 385
 386 </style>
 387 <script type="text/javascript">
 388
 389 // mock console
 390 if(!window.console) {
 391         window.console = new function() {
 392                 this.info = function(str) {};
 393                 this.debug = function(str) {};
 394         };
 395 }
 396
 397
 398 function got_visible_tags(data,textStatus) {
 399         var html = 'No tags in range';
 400         if ( data.tags ) {
 401                 html = '<ul class="tags">';
 402                 $.each(data.tags, function(i,tag) {
 403                         console.debug( i, tag );
 404                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 405                         var content = tag.content || tag.borrower.cardnumber;
 406
 407                         if ( content ) {
 408                                 html += ' <a href="http://koha.example.com:8080/cgi-bin/koha/';
 409                                 if ( tag.type == 1 ) { // book
 410                                         html += 'catalogue/search.pl?q=';
 411                                 } else {
 412                                         html += 'members/member.pl?member=';
 413                                 }
 414                                 html += content + '" title="lookup in Koha" target="koha-lookup">' + content + '</a>';
 415                                 html += '</tt>';
 416 /*
 417                                 html += '<form method=get action=program style="display:inline">'
 418                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 419                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 420                                         + '</form>'
 421                                 ;
 422 */
 423                         } else {
 424                                 html += '</tt>';
 425                                 html += ' <form method=get action=program style="display:inline">'
 426                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 427                                         + '<input type=text name='+tag.sid+' size=12>'
 428                                         + '<input type=submit value="Program">'
 429                                         + '</form>'
 430                                 ;
 431                         }
 432                 });
 433                 html += '</ul>';
 434         }
 435
 436         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 437
 438         html = '<div class=status>'
 439                 + textStatus
 440                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 441                 + '</div>'
 442                 + html
 443                 ;
 444         $('#tags').html( html );
 445         window.setTimeout(function(){
 446                 scan_tags();
 447         },200); // re-scan every 200ms
 448 };
 449
 450 function scan_tags() {
 451         console.info('scan_tags');
 452         if ( $('input#pull-reader').attr('checked') )
 453                 $.getJSON("/scan?callback=?", got_visible_tags);
 454 }
 455
 456 $(document).ready(function() {
 457                 $('input#pull-reader').click( function() {
 458                         scan_tags();
 459                 });
 460                 $('input#pull-reader').attr('checked', true); // force check on load
 461
 462                 $('div#tags').click( function() {
 463                         $('input#pull-reader').attr('checked', false);
 464                 } );
 465
 466                 scan_tags();
 467 });
 468 </script>
 469 </head>
 470 <body>
 471
 472 <h1>RFID tags in range</h1>
 473
 474 <label for=pull-reader>
 475 <input id=pull-reader type=checkbox checked=1>
 476 active
 477 </label>
 478
 479 <div id="tags">
 480 RFID reader not found or driver program not started.
 481 </div>
 482
 483 </body>
 484 </html>