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 URI::Escape;
  23 use POSIX qw(strftime);
  24 use Encode;
  25
  26 my $debug = 0;
  27 my $listen = '127.0.0.1:9000';
  28 $listen = ':9000';
  29 my $reader;
  30 my $koha_url = $ENV{KOHA_URL};
  31 warn "$koha_url";
  32 # internal URL so we can find local address of machine and vmware NAT
  33 my $rfid_url = $ENV{RFID_URL};
  34 my $sip2 = {
  35         server   => $ENV{SIP2_SERVER}, # '10.60.0.11:6002' must be IP!
  36         user     => $ENV{SIP2_USER},
  37         password => $ENV{SIP2_PASSWORD},
  38         loc      => $ENV{SIP2_LOC},
  39 };
  40 my $afi = {
  41         secure   => 0xDA,
  42         unsecure => 0xD7,
  43 };
  44
  45 use Getopt::Long;
  46
  47 GetOptions(
  48         'debug!'    => \$debug,
  49         'listen=s', => \$listen,
  50         'reader=s', => \$reader,
  51 ) || die $!;
  52
  53 die "need KOHA_URL, eg. http://ffzg.koha-dev.rot13.org:8080" unless $koha_url;
  54
  55 our $rfid_sid_cache;
  56
  57 sub rfid_borrower {
  58         my $hash = shift;
  59         if ( my $json = $rfid_sid_cache->{ $hash->{sid} } ) {
  60                 return $json;
  61         }
  62         my $ua = LWP::UserAgent->new;
  63         my $url = URI->new( $koha_url . '/cgi-bin/koha/ffzg/rfid/borrower.pl');
  64         $url->query_form(
  65                   RFID_SID => $hash->{sid}
  66                 , OIB => $hash->{OIB}
  67                 , JMBAG => $hash->{JMBAG}
  68         );
  69         warn "GET ",$url->as_string;
  70         my $response = $ua->get($url);
  71         if ( $response->is_success ) {
  72                 my $json = decode_json $response->decoded_content;
  73                 $rfid_sid_cache->{ $hash->{sid} } = $json;
  74                 return $json;
  75         } else {
  76                 warn "ERROR ", $response->status_line;
  77         }
  78 }
  79
  80
  81 sub sip2_message {
  82         my $send = shift;
  83
  84         my $sock = $sip2->{sock} || die "no sip2 socket";
  85
  86         local $/ = "\r";
  87
  88         $send .= "\r" unless $send =~ m/\r$/;
  89         warn "SIP2 >>>> ",dump($send), "\n";
  90         print $sock $send;
  91         $sock->flush;
  92
  93         my $expect = substr($send,0,2) | 0x01;
  94
  95         my $in = <$sock>;
  96         $in =~ s/^\n//;
  97         warn "SIP2 <<<< ",dump($in), "\n";
  98
  99         die "expected $expect" unless substr($in,0,2) != $expect;
 100
 101         $in =~ s/\r$//;
 102
 103         my $hash;
 104         if ( $in =~ s/^([0-9\s]+)// ) {
 105                 $hash->{fixed} = $1;
 106         }
 107         foreach ( split(/\|/, $in ) ) {
 108                 my ( $f, $v ) = ( $1, $2 ) if m/([A-Z]{2})(.+)/;
 109                 $hash->{$f} = decode('utf-8',$v);
 110         }
 111
 112         warn "# sip2 hash response ",dump($hash);
 113
 114         return $hash;
 115 }
 116
 117 if ( my $server = $sip2->{server} ) {
 118         my $sock = $sip2->{sock} = IO::Socket::INET->new( $server ) || die "can't connect to $server: $!";
 119         warn "SIP2 server ", $sock->peerhost, ":", $sock->peerport, "\n";
 120
 121         # login
 122         if ( sip2_message("9300CN$sip2->{user}|CO$sip2->{password}|")->{fixed} !~ m/^941/ ) {
 123                 die "SIP2 login failed";
 124         }
 125
 126 }
 127
 128 use lib 'lib';
 129 use Biblio::RFID::RFID501;
 130 use Biblio::RFID::Reader;
 131 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
 132 $rfid->debug( $debug );
 133
 134 my $index_html;
 135 {
 136         local $/ = undef;
 137         $index_html = <DATA>;
 138         $index_html =~ s{http://koha.example.com:8080}{$koha_url}sg;
 139 }
 140
 141 my $server_url;
 142
 143 sub http_server {
 144
 145         my $server = IO::Socket::INET->new(
 146                 Proto     => 'tcp',
 147                 LocalAddr => $listen,
 148                 Listen    => SOMAXCONN,
 149                 Reuse     => 1
 150         );
 151
 152         die "can't setup server: $!" unless $server;
 153
 154         $server_url = 'http://' . $listen;
 155         print "Server $0 ready at $server_url\n";
 156
 157         while (my $client = $server->accept()) {
 158
 159             eval { # don't die inside here!
 160
 161                 $client->autoflush(1);
 162                 my $request = <$client>;
 163
 164                 warn "WEB << $request\n" if $debug;
 165                 my $path;
 166
 167                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
 168                         my $method = $1;
 169                         my $param;
 170                         if ( $method =~ s{\?(.+)}{} ) {
 171                                 foreach my $p ( split(/[&;]/, $1) ) {
 172                                         my ($n,$v) = split(/=/, $p, 2);
 173                                         $param->{$n} = $v;
 174                                 }
 175                                 warn "WEB << param: ",dump( $param ) if $debug;
 176                         }
 177                         $path = $method;
 178
 179                         if ( $path eq '/' ) {
 180                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 181                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 182                                 $path = $1; # FIXME prefix with dir for installation
 183                                 my $size = -s $path;
 184                                 warn "static $path $size bytes\n";
 185                                 my $content_type = 'text/plain';
 186                                 $content_type = 'application/javascript' if $path =~ /\.js$/;
 187                                 $content_type = 'text/html' if $path =~ /\.html$/;
 188                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 189                                 {
 190                                         local $/ = undef;
 191                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 192                                         while(<$fh>) {
 193                                                 print $client $_;
 194                                         }
 195                                         close($fh);
 196                                 }
 197                         } elsif ( $method =~ m{/scan(/only/(.+))?} ) {
 198                                 my $only = $2;
 199                                 my @tags = $rfid->tags( reader => sub {
 200                                         my $reader = shift;
 201                                         return 1 unless $only;
 202                                         if ( ref($reader) =~ m/$only/i ) {
 203                                                 return 1;
 204                                         }
 205                                         return 0;
 206                                 });
 207                                 my $json = { time => time() };
 208                                 foreach my $tag ( @tags ) {
 209                                         my $hash = $rfid->to_hash( $tag );
 210                                         $hash->{sid}  = $tag;
 211                                         $hash->{reader} = $rfid->from_reader( $tag );
 212                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 213                                                 my $borrower = rfid_borrower $hash;
 214                                                 if ( exists $borrower->{error} ) {
 215                                                         warn "ERROR ", dump($borrower);
 216                                                 } else {
 217                                                         $hash->{borrower} = $borrower->{borrower};
 218                                                         $hash->{content}  = $borrower->{borrower}->{cardnumber}; # compatibile with 3M tags
 219                                                 }
 220                                         } else {
 221                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 222                                         }
 223                                         push @{ $json->{tags} }, $hash;
 224                                 };
 225                                 warn "#### ", encode_json($json);
 226                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 227                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 228                         } elsif ( $method =~ m{/program} ) {
 229
 230                                 my $status = 501; # Not implementd
 231
 232                                 foreach my $p ( keys %$param ) {
 233                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 234                                         my $tag = $1;
 235                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 236                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 237                                         $status = 302;
 238
 239                                         warn "PROGRAM $tag $content\n";
 240                                         $rfid->write_blocks( $tag => $content );
 241                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? $afi->{secure} : $afi->{unsecure} ) );
 242                                 }
 243
 244                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 245
 246                         } elsif ( $method =~ m{/secure(.js)} ) {
 247
 248                                 my $json = $1;
 249
 250                                 my $status = 501; # Not implementd
 251
 252                                 foreach my $p ( keys %$param ) {
 253                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 254                                         my $tag = $1;
 255                                         my $data = $param->{$p};
 256                                         $status = 302;
 257
 258                                         warn "SECURE $tag $data\n";
 259                                         $rfid->write_afi( $tag => chr(hex($data)) );
 260                                 }
 261
 262                                 if ( $json ) {
 263                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 264                                                 $param->{callback}, "({ ok: 1 })\r\n";
 265                                 } else {
 266                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 267                                 }
 268
 269                         } elsif ( $method =~ m{/sip2/(\w+)/(.+)} ) {
 270                                 my ( $method, $args ) = ( $1, $2 );
 271                                 warn "SIP2: $method [$args]";
 272
 273                                 my $ts = strftime('%Y%m%d    %H%M%S', localtime());
 274                                 my $loc      = $sip2->{loc} || die "missing sip->{loc}";
 275                                 my $password = $sip2->{password} || die "missing sip->{password}";
 276
 277                                 my $hash;
 278
 279                                 if ( $method eq 'patron_info' ) {
 280                                         my $patron = $args;
 281                                         $hash = sip2_message("63000${ts}          AO$loc|AA$patron|AC$password|");
 282
 283                                 } elsif ( $method eq 'checkout' ) {
 284                                         my ($patron,$barcode,$sid) = split(/\//, $args, 3);
 285                                         $hash = sip2_message("11YN${ts}                  AO$loc|AA$patron|AB$barcode|AC$password|BON|BIN|");
 286                                         if ( substr( $hash->{fixed}, 2, 1 ) == 1 ) {
 287                                                 $rfid->write_afi( $sid => chr( $afi->{unsecure} ) );
 288                                         }
 289
 290                                 } elsif ( $method eq 'checkin' ) {
 291                                         my ($patron,$barcode,$sid) = split(/\//, $args, 3);
 292                                         $hash = sip2_message("09N${ts}${ts}AP|AO${loc}|AB$barcode|AC|BIN|");
 293                                         if ( substr( $hash->{fixed}, 2, 1 ) == 1 ) {
 294                                                 $rfid->write_afi( $sid => chr( $afi->{secure} ) );
 295                                         }
 296                                 } else {
 297                                         print $client "HTTP/1.0 501 $method not implemented\r\n\r\n";
 298                                         warn "ERROR 501 $request\n";
 299                                 }
 300
 301                                 if ( $hash ) {
 302                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 303                                                 encode_json( $hash );
 304                                 }
 305
 306                         } elsif ( $method =~ m{/beep/(.*)} ) {
 307                                 my $error = uri_unescape($1);
 308                                 system "beep -f 800 -r 2 -l 100";
 309                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n{ beep: '$error' }\n";
 310                                 print "BEEP $error\n";
 311                         } else {
 312                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 313                                 warn "ERROR 404 $request\n";
 314                         }
 315                 } else {
 316                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 317                         warn "ERROR 500 $request\n";
 318                 }
 319                 close $client;
 320
 321             }; # end of eval
 322             if ( $@ ) {
 323                 print $client "HTTP/1.0 500 Error\r\n\r\nContent-Type: text/plain\r\n$@";
 324                 warn "ERROR: $@";
 325             }
 326
 327         }
 328
 329         die "server died";
 330 }
 331
 332 sub rfid_register {
 333         my $ip;
 334
 335         foreach ( split(/\n/, `ip addr` ) ) {
 336                 if ( /^\d:\s(\w+):\s/ ) {
 337                         $ip->{_last} = $1;
 338                 } elsif ( /^\s+inet\s((\d+)\.(\d+)\.(\d+)\.(\d+))\/(\d+)/ ) {
 339                         $ip->{ $ip->{_last} } = $1;
 340                 } else {
 341                         #warn "# SKIP [$_]\n";
 342                 }
 343         }
 344
 345         warn dump($ip);
 346
 347         my $ua = LWP::UserAgent->new;
 348         my $url = URI->new( $rfid_url . '/register.pl');
 349         $url->query_form(
 350                 local_ip => $ip->{eth0} || $ip->{ (keys %$ip)[0] },
 351         );
 352         warn "GET ",$url->as_string;
 353         my $response = $ua->get($url);
 354         if ( $response->is_success ) {
 355                 warn "# ", $response->decoded_content;
 356                 my $json = decode_json $response->decoded_content;
 357                 warn "REGISTER: ",dump($json);
 358                 return $json;
 359         } else {
 360                 warn "ERROR ", $response->status_line;
 361         }
 362 }
 363
 364 rfid_register if $rfid_url;
 365 http_server;
 366
 367 __DATA__
 368 <html>
 369 <head>
 370 <title>RFID JSONP</title>
 371 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 372 <style type="text/css">
 373 .status {
 374         background: #ff8;
 375 }
 376
 377 .da {
 378         background: #fcc;
 379 }
 380
 381 .d7 {
 382         background: #cfc;
 383 }
 384
 385 label[for=pull-reader] {
 386         position: absolute;
 387         top: 1em;
 388         right: 1em;
 389         background: #eee;
 390 }
 391
 392 </style>
 393 <script type="text/javascript">
 394
 395 // mock console
 396 if(!window.console) {
 397         window.console = new function() {
 398                 this.info = function(str) {};
 399                 this.debug = function(str) {};
 400         };
 401 }
 402
 403
 404 function got_visible_tags(data,textStatus) {
 405         var html = 'No tags in range';
 406         if ( data.tags ) {
 407                 html = '<ul class="tags">';
 408                 $.each(data.tags, function(i,tag) {
 409                         console.debug( i, tag );
 410                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 411                         var content = tag.content || tag.borrower.cardnumber;
 412
 413                         if ( content ) {
 414                                 html += ' <a href="http://koha.example.com:8080/cgi-bin/koha/';
 415                                 if ( tag.type == 1 ) { // book
 416                                         html += 'catalogue/search.pl?q=';
 417                                 } else {
 418                                         html += 'members/member.pl?member=';
 419                                 }
 420                                 html += content + '" title="lookup in Koha" target="koha-lookup">' + content + '</a>';
 421                                 html += '</tt>';
 422 /*
 423                                 html += '<form method=get action=program style="display:inline">'
 424                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 425                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 426                                         + '</form>'
 427                                 ;
 428 */
 429                         } else {
 430                                 html += '</tt>';
 431                                 html += ' <form method=get action=program style="display:inline">'
 432                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 433                                         + '<input type=text name='+tag.sid+' size=12>'
 434                                         + '<input type=submit value="Program">'
 435                                         + '</form>'
 436                                 ;
 437                         }
 438                 });
 439                 html += '</ul>';
 440         }
 441
 442         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 443
 444         html = '<div class=status>'
 445                 + textStatus
 446                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 447                 + '</div>'
 448                 + html
 449                 ;
 450         $('#tags').html( html );
 451         window.setTimeout(function(){
 452                 scan_tags();
 453         },200); // re-scan every 200ms
 454 };
 455
 456 function scan_tags() {
 457         console.info('scan_tags');
 458         if ( $('input#pull-reader').attr('checked') )
 459                 $.getJSON("/scan?callback=?", got_visible_tags);
 460 }
 461
 462 $(document).ready(function() {
 463                 $('input#pull-reader').click( function() {
 464                         scan_tags();
 465                 });
 466                 $('input#pull-reader').attr('checked', true); // force check on load
 467
 468                 $('div#tags').click( function() {
 469                         $('input#pull-reader').attr('checked', false);
 470                 } );
 471
 472                 scan_tags();
 473 });
 474 </script>
 475 </head>
 476 <body>
 477
 478 <h1>RFID tags in range</h1>
 479
 480 <label for=pull-reader>
 481 <input id=pull-reader type=checkbox checked=1>
 482 active
 483 </label>
 484
 485 <div id="tags">
 486 RFID reader not found or driver program not started.
 487 </div>
 488
 489 </body>
 490 </html>