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_socket {
  82
  83         return $sip2->{sock} if exists $sip2->{sock} && $sip2->{sock}->connected;
  84
  85         if ( my $server = $sip2->{server} ) {
  86                 my $sock = $sip2->{sock} = IO::Socket::INET->new( $server ) || die "can't connect to $server: $!";
  87                 warn "SIP2 server ", $sock->peerhost, ":", $sock->peerport, "\n";
  88
  89                 # login
  90                 if ( sip2_message("9300CN$sip2->{user}|CO$sip2->{password}|")->{fixed} !~ m/^941/ ) {
  91                         die "SIP2 login failed";
  92                 }
  93
  94         }
  95         return $sip2->{sock};
  96 }
  97
  98 sub sip2_message {
  99         my $send = shift;
 100
 101 send_again:
 102         my $sock = sip2_socket || die "no sip2 socket";
 103
 104         local $/ = "\r";
 105
 106         $send .= "\r" unless $send =~ m/\r$/;
 107         $send .= "\n" unless $send =~ m/\n$/;
 108
 109
 110         my $retry = 0;
 111         warn "SIP2 >>>> ",dump($send), "\n";
 112         print $sock $send;
 113         $sock->flush;
 114
 115         my $expect = substr($send,0,2) | 0x01;
 116
 117         my $in = <$sock>;
 118         warn "SIP2 <<<< ",dump($in), "\n";
 119
 120         $in =~ s/^\n//;
 121         $in =~ s/\r$//;
 122
 123         if ( ! $in ) {
 124                 $retry++;
 125                 warn "empty read from SIP server, retry: $retry\n";
 126                 if ( $retry < 10 ) {
 127                         close( $sip2->{sock} );
 128                         goto send_again;
 129                 }
 130                 die "aborted";
 131         }
 132
 133
 134         die "expected $expect" unless substr($in,0,2) != $expect;
 135
 136         my $hash;
 137         if ( $in =~ s/^([0-9\s]+)// ) {
 138                 $hash->{fixed} = $1;
 139         }
 140         foreach ( split(/\|/, $in ) ) {
 141                 my ( $f, $v ) = ( $1, $2 ) if m/([A-Z]{2})(.+)/;
 142                 $hash->{$f} = decode('utf-8',$v);
 143         }
 144
 145         warn "# sip2 hash response ",dump($hash);
 146
 147         return $hash;
 148 }
 149
 150
 151 use lib 'lib';
 152 use Biblio::RFID::RFID501;
 153 use Biblio::RFID::Reader;
 154 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
 155 $rfid->debug( $debug );
 156
 157 my $index_html;
 158 {
 159         local $/ = undef;
 160         $index_html = <DATA>;
 161         $index_html =~ s{http://koha.example.com:8080}{$koha_url}sg;
 162 }
 163
 164 my $server_url;
 165
 166 sub http_server {
 167
 168         my $server = IO::Socket::INET->new(
 169                 Proto     => 'tcp',
 170                 LocalAddr => $listen,
 171                 Listen    => SOMAXCONN,
 172                 Reuse     => 1
 173         );
 174
 175         die "can't setup server: $!" unless $server;
 176
 177         $server_url = 'http://' . $listen;
 178         print "Server $0 ready at $server_url\n";
 179
 180         while (my $client = $server->accept()) {
 181
 182             eval { # don't die inside here!
 183
 184                 $client->autoflush(1);
 185                 my $request = <$client>;
 186
 187                 warn "WEB << $request\n" if $debug;
 188                 my $path;
 189
 190                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
 191                         my $method = $1;
 192                         my $param;
 193                         if ( $method =~ s{\?(.+)}{} ) {
 194                                 foreach my $p ( split(/[&;]/, $1) ) {
 195                                         my ($n,$v) = split(/=/, $p, 2);
 196                                         $param->{$n} = $v;
 197                                 }
 198                                 warn "WEB << param: ",dump( $param ) if $debug;
 199                         }
 200                         $path = $method;
 201
 202                         if ( $path eq '/' ) {
 203                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 204                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 205                                 $path = $1; # FIXME prefix with dir for installation
 206                                 my $size = -s $path;
 207                                 warn "static $path $size bytes\n";
 208                                 my $content_type = 'text/plain';
 209                                 $content_type = 'application/javascript' if $path =~ /\.js$/;
 210                                 $content_type = 'text/html' if $path =~ /\.html$/;
 211                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 212                                 {
 213                                         local $/ = undef;
 214                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 215                                         while(<$fh>) {
 216                                                 print $client $_;
 217                                         }
 218                                         close($fh);
 219                                 }
 220                         } elsif ( $method =~ m{/scan(/only/(.+))?} ) {
 221                                 my $only = $2;
 222                                 my @tags = $rfid->tags( reader => sub {
 223                                         my $reader = shift;
 224                                         return 1 unless $only;
 225                                         if ( ref($reader) =~ m/$only/i ) {
 226                                                 return 1;
 227                                         }
 228                                         return 0;
 229                                 });
 230                                 my $json = { time => time() };
 231                                 foreach my $tag ( @tags ) {
 232                                         my $hash = $rfid->to_hash( $tag );
 233                                         $hash->{sid}  = $tag;
 234                                         $hash->{reader} = $rfid->from_reader( $tag );
 235                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 236                                                 my $borrower = rfid_borrower $hash;
 237                                                 if ( exists $borrower->{error} ) {
 238                                                         warn "ERROR ", dump($borrower);
 239                                                 } else {
 240                                                         $hash->{borrower} = $borrower->{borrower};
 241                                                         $hash->{content}  = $borrower->{borrower}->{cardnumber}; # compatibile with 3M tags
 242                                                 }
 243                                         } else {
 244                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 245                                         }
 246                                         push @{ $json->{tags} }, $hash;
 247                                 };
 248                                 warn "#### ", encode_json($json);
 249                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 250                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 251                         } elsif ( $method =~ m{/program} ) {
 252
 253                                 my $status = 501; # Not implementd
 254
 255                                 foreach my $p ( keys %$param ) {
 256                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 257                                         my $tag = $1;
 258                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 259                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 260                                         $status = 302;
 261
 262                                         warn "PROGRAM $tag $content\n";
 263                                         $rfid->write_blocks( $tag => $content );
 264                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? $afi->{secure} : $afi->{unsecure} ) );
 265                                 }
 266
 267                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 268
 269                         } elsif ( $method =~ m{/secure(.js)} ) {
 270
 271                                 my $json = $1;
 272
 273                                 my $status = 501; # Not implementd
 274
 275                                 foreach my $p ( keys %$param ) {
 276                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 277                                         my $tag = $1;
 278                                         my $data = $param->{$p};
 279                                         $status = 302;
 280
 281                                         warn "SECURE $tag $data\n";
 282                                         $rfid->write_afi( $tag => chr(hex($data)) );
 283                                 }
 284
 285                                 if ( $json ) {
 286                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 287                                                 $param->{callback}, "({ ok: 1 })\r\n";
 288                                 } else {
 289                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 290                                 }
 291
 292                         } elsif ( $method =~ m{/sip2/(\w+)/(.+)} ) {
 293                                 my ( $method, $args ) = ( $1, $2 );
 294                                 warn "SIP2: $method [$args]";
 295
 296                                 my $ts = strftime('%Y%m%d    %H%M%S', localtime());
 297                                 my $loc      = $sip2->{loc} || die "missing sip->{loc}";
 298                                 my $password = $sip2->{password} || die "missing sip->{password}";
 299
 300                                 my $hash;
 301
 302                                 if ( $method eq 'patron_info' ) {
 303                                         my $patron = $args;
 304                                         $hash = sip2_message("63000${ts}          AO$loc|AA$patron|AC$password|");
 305
 306                                 } elsif ( $method eq 'checkout' ) {
 307                                         my ($patron,$barcode,$sid) = split(/\//, $args, 3);
 308                                         $hash = sip2_message("11YN${ts}                  AO$loc|AA$patron|AB$barcode|AC$password|BON|BIN|");
 309                                         if ( substr( $hash->{fixed}, 2, 1 ) == 1 ) {
 310                                                 $rfid->write_afi( $sid => chr( $afi->{unsecure} ) );
 311                                         }
 312
 313                                 } elsif ( $method eq 'checkin' ) {
 314                                         my ($patron,$barcode,$sid) = split(/\//, $args, 3);
 315                                         $hash = sip2_message("09N${ts}${ts}AP|AO${loc}|AB$barcode|AC|BIN|");
 316                                         if ( substr( $hash->{fixed}, 2, 1 ) == 1 ) {
 317                                                 $rfid->write_afi( $sid => chr( $afi->{secure} ) );
 318                                         }
 319                                 } else {
 320                                         print $client "HTTP/1.0 501 $method not implemented\r\n\r\n";
 321                                         warn "ERROR 501 $request\n";
 322                                 }
 323
 324                                 if ( $hash ) {
 325                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 326                                                 encode_json( $hash );
 327                                 }
 328
 329                         } elsif ( $method =~ m{/beep/(.*)} ) {
 330                                 my $error = uri_unescape($1);
 331                                 system "beep -f 800 -r 2 -l 100";
 332                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n{ beep: '$error' }\n";
 333                                 print "BEEP $error\n";
 334                         } else {
 335                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 336                                 warn "ERROR 404 $request\n";
 337                         }
 338                 } else {
 339                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 340                         warn "ERROR 500 $request\n";
 341                 }
 342                 close $client;
 343
 344             }; # end of eval
 345             if ( $@ ) {
 346                 print $client "HTTP/1.0 500 Error\r\n\r\nContent-Type: text/plain\r\n$@";
 347                 warn "ERROR: $@";
 348             }
 349
 350         }
 351
 352         die "server died";
 353 }
 354
 355 sub rfid_register {
 356         my $ip;
 357
 358         foreach ( split(/\n/, `ip addr` ) ) {
 359                 if ( /^\d:\s(\w+):\s/ ) {
 360                         $ip->{_last} = $1;
 361                 } elsif ( /^\s+inet\s((\d+)\.(\d+)\.(\d+)\.(\d+))\/(\d+)/ ) {
 362                         $ip->{ $ip->{_last} } = $1;
 363                 } else {
 364                         #warn "# SKIP [$_]\n";
 365                 }
 366         }
 367
 368         warn dump($ip);
 369
 370         my $ua = LWP::UserAgent->new;
 371         my $url = URI->new( $rfid_url . '/register.pl');
 372         $url->query_form(
 373                 local_ip => $ip->{eth0} || $ip->{ (keys %$ip)[0] },
 374         );
 375         warn "GET ",$url->as_string;
 376         my $response = $ua->get($url);
 377         if ( $response->is_success ) {
 378                 warn "# ", $response->decoded_content;
 379                 my $json = decode_json $response->decoded_content;
 380                 warn "REGISTER: ",dump($json);
 381                 return $json;
 382         } else {
 383                 warn "ERROR ", $response->status_line;
 384         }
 385 }
 386
 387 rfid_register if $rfid_url;
 388 http_server;
 389
 390 __DATA__
 391 <html>
 392 <head>
 393 <title>RFID JSONP</title>
 394 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 395 <style type="text/css">
 396 .status {
 397         background: #ff8;
 398 }
 399
 400 .da {
 401         background: #fcc;
 402 }
 403
 404 .d7 {
 405         background: #cfc;
 406 }
 407
 408 label[for=pull-reader] {
 409         position: absolute;
 410         top: 1em;
 411         right: 1em;
 412         background: #eee;
 413 }
 414
 415 </style>
 416 <script type="text/javascript">
 417
 418 // mock console
 419 if(!window.console) {
 420         window.console = new function() {
 421                 this.info = function(str) {};
 422                 this.debug = function(str) {};
 423         };
 424 }
 425
 426
 427 function got_visible_tags(data,textStatus) {
 428         var html = 'No tags in range';
 429         if ( data.tags ) {
 430                 html = '<ul class="tags">';
 431                 $.each(data.tags, function(i,tag) {
 432                         console.debug( i, tag );
 433                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 434                         var content = tag.content || tag.borrower.cardnumber;
 435
 436                         if ( content ) {
 437                                 html += ' <a href="http://koha.example.com:8080/cgi-bin/koha/';
 438                                 if ( tag.type == 1 ) { // book
 439                                         html += 'catalogue/search.pl?q=';
 440                                 } else {
 441                                         html += 'members/member.pl?member=';
 442                                 }
 443                                 html += content + '" title="lookup in Koha" target="koha-lookup">' + content + '</a>';
 444                                 html += '</tt>';
 445 /*
 446                                 html += '<form method=get action=program style="display:inline">'
 447                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 448                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 449                                         + '</form>'
 450                                 ;
 451 */
 452                         } else {
 453                                 html += '</tt>';
 454                                 html += ' <form method=get action=program style="display:inline">'
 455                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 456                                         + '<input type=text name='+tag.sid+' size=12>'
 457                                         + '<input type=submit value="Program">'
 458                                         + '</form>'
 459                                 ;
 460                         }
 461                 });
 462                 html += '</ul>';
 463         }
 464
 465         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 466
 467         html = '<div class=status>'
 468                 + textStatus
 469                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 470                 + '</div>'
 471                 + html
 472                 ;
 473         $('#tags').html( html );
 474         window.setTimeout(function(){
 475                 scan_tags();
 476         },200); // re-scan every 200ms
 477 };
 478
 479 function scan_tags() {
 480         console.info('scan_tags');
 481         if ( $('input#pull-reader').attr('checked') )
 482                 $.getJSON("/scan?callback=?", got_visible_tags);
 483 }
 484
 485 $(document).ready(function() {
 486                 $('input#pull-reader').click( function() {
 487                         scan_tags();
 488                 });
 489                 $('input#pull-reader').attr('checked', true); // force check on load
 490
 491                 $('div#tags').click( function() {
 492                         $('input#pull-reader').attr('checked', false);
 493                 } );
 494
 495                 scan_tags();
 496 });
 497 </script>
 498 </head>
 499 <body>
 500
 501 <h1>RFID tags in range</h1>
 502
 503 <label for=pull-reader>
 504 <input id=pull-reader type=checkbox checked=1>
 505 active
 506 </label>
 507
 508 <div id="tags">
 509 RFID reader not found or driver program not started.
 510 </div>
 511
 512 </body>
 513 </html>