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 = $ENV{HTTP_LISTEN} || 'localhost: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_socket {
  81
  82         return $sip2->{sock} if exists $sip2->{sock} && $sip2->{sock}->connected;
  83
  84         if ( my $server = $sip2->{server} ) {
  85                 my $sock = $sip2->{sock} = IO::Socket::INET->new( $server ) || die "can't connect to $server: $!";
  86                 warn "SIP2 server ", $sock->peerhost, ":", $sock->peerport, "\n";
  87
  88                 # login
  89                 if ( sip2_message("9300CN$sip2->{user}|CO$sip2->{password}|")->{fixed} !~ m/^941/ ) {
  90                         die "SIP2 login failed";
  91                 }
  92
  93         }
  94         return $sip2->{sock};
  95 }
  96
  97 sub sip2_message {
  98         my $send = shift;
  99
 100         my $retry = 0;
 101
 102 send_again:
 103         my $sock = sip2_socket || die "no sip2 socket";
 104
 105         local $/ = "\r";
 106
 107         $send .= "\r" unless $send =~ m/\r$/;
 108         $send .= "\n" unless $send =~ m/\n$/;
 109
 110         warn "SIP2 >>>> ",dump($send), "\n";
 111         print $sock $send;
 112         $sock->flush;
 113
 114         my $expect = substr($send,0,2) | 0x01;
 115
 116         my $in = <$sock>;
 117         warn "SIP2 <<<< ",dump($in), "\n";
 118
 119         $in =~ s/^\n//;
 120         $in =~ s/\r$//;
 121
 122         if ( ! $in ) {
 123                 $retry++;
 124                 warn "empty read from SIP server, retry: $retry\n";
 125                 if ( $retry < 10 ) {
 126                         close( $sip2->{sock} );
 127                         goto send_again;
 128                 }
 129                 die "aborted";
 130         }
 131
 132
 133         die "expected $expect" unless substr($in,0,2) != $expect;
 134
 135         my $hash;
 136         if ( $in =~ s/^([0-9\s\w]+)// ) {
 137                 $hash->{fixed} = $1;
 138         }
 139         foreach ( split(/\|/, $in ) ) {
 140                 my ( $f, $v ) = ( $1, $2 ) if m/([A-Z]{2})(.+)/;
 141                 $hash->{$f} = decode('utf-8',$v);
 142         }
 143
 144         warn "# sip2 hash response ",dump($hash);
 145
 146         return $hash;
 147 }
 148
 149
 150 use lib 'lib';
 151 use Biblio::RFID::RFID501;
 152 use Biblio::RFID::Reader;
 153 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
 154 $rfid->debug( $debug );
 155
 156 my $index_html;
 157 {
 158         local $/ = undef;
 159         $index_html = <DATA>;
 160         $index_html =~ s{http://koha.example.com:8080}{$koha_url}sg;
 161 }
 162
 163 my $server_url;
 164
 165 sub http_server {
 166
 167         my $server = IO::Socket::INET->new(
 168                 Proto     => 'tcp',
 169                 LocalAddr => $listen,
 170                 Listen    => SOMAXCONN,
 171                 Reuse     => 1
 172         );
 173
 174         die "can't setup server: $!" unless $server;
 175
 176         $server_url = 'http://' . $listen;
 177         print "Server $0 ready at $server_url\n";
 178
 179         while (my $client = $server->accept()) {
 180
 181             eval { # don't die inside here!
 182
 183                 $client->autoflush(1);
 184                 my $request = <$client>;
 185
 186                 warn "WEB << $request\n" if $debug;
 187                 my $path;
 188
 189                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
 190                         my $method = $1;
 191                         my $param;
 192                         if ( $method =~ s{\?(.+)}{} ) {
 193                                 foreach my $p ( split(/[&;]/, $1) ) {
 194                                         my ($n,$v) = split(/=/, $p, 2);
 195                                         $param->{$n} = $v;
 196                                 }
 197                                 warn "WEB << param: ",dump( $param ) if $debug;
 198                         }
 199                         $path = $method;
 200
 201                         if ( $path eq '/' ) {
 202                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 203                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 204                                 $path = $1; # FIXME prefix with dir for installation
 205                                 my $size = -s $path;
 206                                 warn "static $path $size bytes\n";
 207                                 my $content_type = 'text/plain';
 208                                 $content_type = 'application/javascript' if $path =~ /\.js$/;
 209                                 $content_type = 'text/html' if $path =~ /\.html$/;
 210                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 211                                 {
 212                                         local $/ = undef;
 213                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 214                                         while(<$fh>) {
 215                                                 print $client $_;
 216                                         }
 217                                         close($fh);
 218                                 }
 219                         } elsif ( $method =~ m{/scan(/only/(.+))?} ) {
 220                                 my $only = $2;
 221                                 my @tags = $rfid->tags( reader => sub {
 222                                         my $reader = shift;
 223                                         return 1 unless $only;
 224                                         if ( ref($reader) =~ m/$only/i ) {
 225                                                 return 1;
 226                                         }
 227                                         return 0;
 228                                 });
 229                                 my $json = { time => time() };
 230                                 foreach my $tag ( @tags ) {
 231                                         my $hash = $rfid->to_hash( $tag );
 232                                         $hash->{sid}  = $tag;
 233                                         $hash->{reader} = $rfid->from_reader( $tag );
 234                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 235                                                 my $borrower = rfid_borrower $hash;
 236                                                 if ( exists $borrower->{error} ) {
 237                                                         warn "ERROR ", dump($borrower);
 238                                                 } else {
 239                                                         $hash->{borrower} = $borrower->{borrower};
 240                                                         $hash->{content}  = $borrower->{borrower}->{cardnumber}; # compatibile with 3M tags
 241                                                 }
 242                                         } else {
 243                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 244                                         }
 245                                         push @{ $json->{tags} }, $hash;
 246                                 };
 247                                 warn "#### ", encode_json($json);
 248                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 249                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 250                         } elsif ( $method =~ m{/program} ) {
 251
 252                                 my $status = 501; # Not implementd
 253
 254                                 foreach my $p ( keys %$param ) {
 255                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 256                                         my $tag = $1;
 257                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 258                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 259                                         $status = 302;
 260
 261                                         warn "PROGRAM $tag $content\n";
 262                                         $rfid->write_blocks( $tag => $content );
 263                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? $afi->{secure} : $afi->{unsecure} ) );
 264                                 }
 265
 266                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 267
 268                         } elsif ( $method =~ m{/secure(.js)} ) {
 269
 270                                 my $json = $1;
 271
 272                                 my $status = 501; # Not implementd
 273
 274                                 foreach my $p ( keys %$param ) {
 275                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 276                                         my $tag = $1;
 277                                         my $data = $param->{$p};
 278                                         $status = 302;
 279
 280                                         warn "SECURE $tag $data\n";
 281                                         $rfid->write_afi( $tag => chr(hex($data)) );
 282                                 }
 283
 284                                 if ( $json ) {
 285                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 286                                                 $param->{callback}, "({ ok: 1 })\r\n";
 287                                 } else {
 288                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 289                                 }
 290
 291                         } elsif ( $method =~ m{/sip2/(\w+)/(.+)} ) {
 292                                 my ( $method, $args ) = ( $1, $2 );
 293                                 warn "SIP2: $method [$args]";
 294
 295                                 my $ts = strftime('%Y%m%d    %H%M%S', localtime());
 296                                 my $loc      = $sip2->{loc} || die "missing sip->{loc}";
 297                                 my $password = $sip2->{password} || die "missing sip->{password}";
 298
 299                                 my $hash;
 300
 301                                 if ( $method eq 'patron_info' ) {
 302                                         my $patron = $args;
 303                                         $hash = sip2_message("63000${ts}          AO$loc|AA$patron|AC$password|");
 304
 305                                 } elsif ( $method eq 'checkout' ) {
 306                                         my ($patron,$barcode,$sid) = split(/\//, $args, 3);
 307                                         $hash = sip2_message("11YN${ts}                  AO$loc|AA$patron|AB$barcode|AC$password|BON|BIN|");
 308                                         if ( substr( $hash->{fixed}, 2, 1 ) == 1 ) {
 309                                                 $rfid->write_afi( $sid => chr( $afi->{unsecure} ) );
 310                                         }
 311
 312                                 } elsif ( $method eq 'checkin' ) {
 313                                         my ($patron,$barcode,$sid) = split(/\//, $args, 3);
 314                                         $hash = sip2_message("09N${ts}${ts}AP|AO${loc}|AB$barcode|AC|BIN|");
 315                                         if ( substr( $hash->{fixed}, 2, 1 ) == 1 ) {
 316                                                 $rfid->write_afi( $sid => chr( $afi->{secure} ) );
 317                                         }
 318                                 } else {
 319                                         print $client "HTTP/1.0 501 $method not implemented\r\n\r\n";
 320                                         warn "ERROR 501 $request\n";
 321                                 }
 322
 323                                 if ( $hash ) {
 324                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 325                                                 encode_json( $hash );
 326                                 }
 327
 328                         } elsif ( $method =~ m{/beep/(.*)} ) {
 329                                 my $error = uri_unescape($1);
 330                                 system "beep -f 800 -r 2 -l 100";
 331                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n{ beep: '$error' }\n";
 332                                 print "BEEP $error\n";
 333                         } else {
 334                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 335                                 warn "ERROR 404 $request\n";
 336                         }
 337                 } else {
 338                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 339                         warn "ERROR 500 $request\n";
 340                 }
 341                 close $client;
 342
 343             }; # end of eval
 344             if ( $@ ) {
 345                 print $client "HTTP/1.0 500 Error\r\n\r\nContent-Type: text/plain\r\n$@";
 346                 warn "ERROR: $@";
 347             }
 348
 349         }
 350
 351         die "server died";
 352 }
 353
 354 sub rfid_register {
 355         my $ip;
 356
 357         foreach ( split(/\n/, `ip addr` ) ) {
 358                 if ( /^\d:\s(\w+):\s/ ) {
 359                         $ip->{_last} = $1;
 360                 } elsif ( /^\s+inet\s((\d+)\.(\d+)\.(\d+)\.(\d+))\/(\d+)/ ) {
 361                         $ip->{ $ip->{_last} } = $1;
 362                 } else {
 363                         #warn "# SKIP [$_]\n";
 364                 }
 365         }
 366
 367         warn dump($ip);
 368
 369         my $ua = LWP::UserAgent->new;
 370         my $url = URI->new( $rfid_url . '/register.pl');
 371         $url->query_form( %$ip,
 372                 HTTP_LISTEN => $listen,
 373                 RFID_LISTEN => $ENV{RFID_LISTEN},
 374                 KOHA_URL => $koha_url,
 375                 RFID_URL => $rfid_url,
 376         );
 377         warn "GET ",$url->as_string;
 378         my $response = $ua->get($url);
 379         if ( $response->is_success ) {
 380                 warn "# ", $response->decoded_content;
 381                 my $json = decode_json $response->decoded_content;
 382                 warn "REGISTER: ",dump($json);
 383                 return $json;
 384         } else {
 385                 warn "ERROR ", $response->status_line;
 386         }
 387 }
 388
 389 rfid_register if $rfid_url;
 390 http_server;
 391
 392 __DATA__
 393 <html>
 394 <head>
 395 <title>RFID JSONP</title>
 396 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 397 <style type="text/css">
 398 .status {
 399         background: #ff8;
 400 }
 401
 402 .da {
 403         background: #fcc;
 404 }
 405
 406 .d7 {
 407         background: #cfc;
 408 }
 409
 410 label[for=pull-reader] {
 411         position: absolute;
 412         top: 1em;
 413         right: 1em;
 414         background: #eee;
 415 }
 416
 417 </style>
 418 <script type="text/javascript">
 419
 420 // mock console
 421 if(!window.console) {
 422         window.console = new function() {
 423                 this.info = function(str) {};
 424                 this.debug = function(str) {};
 425         };
 426 }
 427
 428
 429 function got_visible_tags(data,textStatus) {
 430         var html = 'No tags in range';
 431         if ( data.tags ) {
 432                 html = '<ul class="tags">';
 433                 $.each(data.tags, function(i,tag) {
 434                         console.debug( i, tag );
 435                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 436                         var content = tag.content || tag.borrower.cardnumber;
 437
 438                         if ( content ) {
 439                                 html += ' <a href="http://koha.example.com:8080/cgi-bin/koha/';
 440                                 if ( tag.type == 1 ) { // book
 441                                         html += 'catalogue/search.pl?q=';
 442                                 } else {
 443                                         html += 'members/member.pl?member=';
 444                                 }
 445                                 html += content + '" title="lookup in Koha" target="koha-lookup">' + content + '</a>';
 446                                 html += '</tt>';
 447 /*
 448                                 html += '<form method=get action=program style="display:inline">'
 449                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 450                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 451                                         + '</form>'
 452                                 ;
 453 */
 454                         } else {
 455                                 html += '</tt>';
 456                                 html += ' <form method=get action=program style="display:inline">'
 457                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 458                                         + '<input type=text name='+tag.sid+' size=12>'
 459                                         + '<input type=submit value="Program">'
 460                                         + '</form>'
 461                                 ;
 462                         }
 463                 });
 464                 html += '</ul>';
 465         }
 466
 467         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 468
 469         html = '<div class=status>'
 470                 + textStatus
 471                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 472                 + '</div>'
 473                 + html
 474                 ;
 475         $('#tags').html( html );
 476         window.setTimeout(function(){
 477                 scan_tags();
 478         },200); // re-scan every 200ms
 479 };
 480
 481 function scan_tags() {
 482         console.info('scan_tags');
 483         if ( $('input#pull-reader').attr('checked') )
 484                 $.getJSON("/scan?callback=?", got_visible_tags);
 485 }
 486
 487 $(document).ready(function() {
 488                 $('input#pull-reader').click( function() {
 489                         scan_tags();
 490                 });
 491                 $('input#pull-reader').attr('checked', true); // force check on load
 492
 493                 $('div#tags').click( function() {
 494                         $('input#pull-reader').attr('checked', false);
 495                 } );
 496
 497                 scan_tags();
 498 });
 499 </script>
 500 </head>
 501 <body>
 502
 503 <h1>RFID tags in range</h1>
 504
 505 <label for=pull-reader>
 506 <input id=pull-reader type=checkbox checked=1>
 507 active
 508 </label>
 509
 510 <div id="tags">
 511 RFID reader not found or driver program not started.
 512 </div>
 513
 514 </body>
 515 </html>