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 = 1;
  26 my $listen = '127.0.0.1:9000';
  27 $listen = ':9000';
  28 my $reader;
  29 my $koha_url = 'http://ffzg.koha-dev.rot13.org:8080';
  30 # internal URL so we can find local address of machine and vmware NAT
  31 my $rfid_url = 'http://rfid.koha-dev.vbz.ffzg.hr';
  32 my $sip2 = {
  33         server   => '10.60.0.11:6002', # must be IP!
  34 #       user     => 'sip2-user',
  35 #       password => 'sip2-passwd',
  36         user     => 'sip2user',
  37         password => 'viva2koha',
  38         loc      => 'FFZG',
  39 };
  40
  41 use Getopt::Long;
  42
  43 GetOptions(
  44         'debug!'    => \$debug,
  45         'listen=s', => \$listen,
  46         'reader=s', => \$reader,
  47         'koha=s',       => \$koha_url,
  48 ) || die $!;
  49
  50 our $rfid_sid_cache;
  51
  52 sub rfid_borrower {
  53         my $hash = shift;
  54         if ( my $json = $rfid_sid_cache->{ $hash->{sid} } ) {
  55                 return $json;
  56         }
  57         my $ua = LWP::UserAgent->new;
  58         my $url = URI->new( $koha_url . '/cgi-bin/koha/ffzg/rfid/borrower.pl');
  59         $url->query_form(
  60                   RFID_SID => $hash->{sid}
  61                 , OIB => $hash->{OIB}
  62                 , JMBAG => $hash->{JMBAG}
  63         );
  64         warn "GET ",$url->as_string;
  65         my $response = $ua->get($url);
  66         if ( $response->is_success ) {
  67                 my $json = decode_json $response->decoded_content;
  68                 $rfid_sid_cache->{ $hash->{sid} } = $json;
  69                 return $json;
  70         } else {
  71                 warn "ERROR ", $response->status_line;
  72         }
  73 }
  74
  75
  76 sub sip2_message {
  77         my $send = shift;
  78
  79         my $sock = $sip2->{sock} || die "no sip2 socket";
  80
  81         local $/ = "\r";
  82
  83         $send .= "\r" unless $send =~ m/\r$/;
  84         warn "SIP2 >>>> ",dump($send), "\n";
  85         print $sock $send;
  86         $sock->flush;
  87
  88         my $expect = substr($send,0,2) | 0x01;
  89
  90         my $in = <$sock>;
  91         $in =~ s/^\n//;
  92         warn "SIP2 <<<< ",dump($in), "\n";
  93
  94         die "expected $expect" unless substr($in,0,2) != $expect;
  95
  96         $in =~ s/\r$//;
  97
  98         my $hash;
  99         if ( $in =~ s/^([0-9\s]+)// ) {
 100                 $hash->{fixed} = $1;
 101         }
 102         foreach ( split(/\|/, $in ) ) {
 103                 my ( $f, $v ) = ( $1, $2 ) if m/([A-Z]{2})(.+)/;
 104                 $hash->{$f} = decode('utf-8',$v);
 105         }
 106
 107         warn "# sip2 hash response ",dump($hash);
 108
 109         return $hash;
 110 }
 111
 112 if ( my $server = $sip2->{server} ) {
 113         my $sock = $sip2->{sock} = IO::Socket::INET->new( $server ) || die "can't connect to $server: $!";
 114         warn "SIP2 server ", $sock->peerhost, ":", $sock->peerport, "\n";
 115
 116         # login
 117         if ( sip2_message("9300CN$sip2->{user}|CO$sip2->{password}|")->{fixed} !~ m/^941/ ) {
 118                 die "SIP2 login failed";
 119         }
 120
 121 }
 122
 123 use lib 'lib';
 124 use Biblio::RFID::RFID501;
 125 use Biblio::RFID::Reader;
 126 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
 127 $rfid->debug( $debug );
 128
 129 my $index_html;
 130 {
 131         local $/ = undef;
 132         $index_html = <DATA>;
 133         $index_html =~ s{http://koha.example.com:8080}{$koha_url}sg;
 134 }
 135
 136 my $server_url;
 137
 138 sub http_server {
 139
 140         my $server = IO::Socket::INET->new(
 141                 Proto     => 'tcp',
 142                 LocalAddr => $listen,
 143                 Listen    => SOMAXCONN,
 144                 Reuse     => 1
 145         );
 146
 147         die "can't setup server: $!" unless $server;
 148
 149         $server_url = 'http://' . $listen;
 150         print "Server $0 ready at $server_url\n";
 151
 152         while (my $client = $server->accept()) {
 153                 $client->autoflush(1);
 154                 my $request = <$client>;
 155
 156                 warn "WEB << $request\n" if $debug;
 157                 my $path;
 158
 159                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
 160                         my $method = $1;
 161                         my $param;
 162                         if ( $method =~ s{\?(.+)}{} ) {
 163                                 foreach my $p ( split(/[&;]/, $1) ) {
 164                                         my ($n,$v) = split(/=/, $p, 2);
 165                                         $param->{$n} = $v;
 166                                 }
 167                                 warn "WEB << param: ",dump( $param ) if $debug;
 168                         }
 169                         $path = $method;
 170
 171                         if ( $path eq '/' ) {
 172                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 173                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 174                                 $path = $1; # FIXME prefix with dir for installation
 175                                 my $size = -s $path;
 176                                 warn "static $path $size bytes\n";
 177                                 my $content_type = 'text/plain';
 178                                 $content_type = 'application/javascript' if $path =~ /\.js$/;
 179                                 $content_type = 'text/html' if $path =~ /\.html$/;
 180                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 181                                 {
 182                                         local $/ = undef;
 183                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 184                                         while(<$fh>) {
 185                                                 print $client $_;
 186                                         }
 187                                         close($fh);
 188                                 }
 189                         } elsif ( $method =~ m{/scan} ) {
 190                                 my @tags = $rfid->tags;
 191                                 my $json = { time => time() };
 192                                 foreach my $tag ( @tags ) {
 193                                         my $hash = $rfid->to_hash( $tag );
 194                                         $hash->{sid}  = $tag;
 195                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 196                                                 my $borrower = rfid_borrower $hash;
 197                                                 if ( exists $borrower->{error} ) {
 198                                                         warn "ERROR ", dump($borrower);
 199                                                 } else {
 200                                                         $hash->{borrower} = $borrower->{borrower};
 201                                                 }
 202                                         } else {
 203                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 204                                         }
 205                                         push @{ $json->{tags} }, $hash;
 206                                 };
 207                                 warn "#### ", encode_json($json);
 208                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 209                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 210                         } elsif ( $method =~ m{/program} ) {
 211
 212                                 my $status = 501; # Not implementd
 213
 214                                 foreach my $p ( keys %$param ) {
 215                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 216                                         my $tag = $1;
 217                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 218                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 219                                         $status = 302;
 220
 221                                         warn "PROGRAM $tag $content\n";
 222                                         $rfid->write_blocks( $tag => $content );
 223                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? 0xDA : 0xD7 ) );
 224                                 }
 225
 226                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 227
 228                         } elsif ( $method =~ m{/secure(.js)} ) {
 229
 230                                 my $json = $1;
 231
 232                                 my $status = 501; # Not implementd
 233
 234                                 foreach my $p ( keys %$param ) {
 235                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 236                                         my $tag = $1;
 237                                         my $data = $param->{$p};
 238                                         $status = 302;
 239
 240                                         warn "SECURE $tag $data\n";
 241                                         $rfid->write_afi( $tag => hex($data) );
 242                                 }
 243
 244                                 if ( $json ) {
 245                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 246                                                 $param->{callback}, "({ ok: 1 })\r\n";
 247                                 } else {
 248                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 249                                 }
 250
 251                         } elsif ( $method =~ m{/sip2/(\w+)/(.+)} ) {
 252                                 my ( $method, $args ) = ( $1, $2 );
 253                                 warn "SIP2: $method [$args]";
 254
 255                                 my $ts = strftime('%Y%m%d    %H%M%S', localtime());
 256                                 my $loc      = $sip2->{loc} || die "missing sip->{loc}";
 257                                 my $password = $sip2->{password} || die "missing sip->{password}";
 258
 259                                 my $hash;
 260
 261                                 if ( $method eq 'patron_info' ) {
 262                                         my $patron = $args;
 263                                         $hash = sip2_message("63000${ts}          AO$loc|AA$patron|AC$password|");
 264
 265                                 } elsif ( $method eq 'checkout' ) {
 266                                         my ($patron,$barcode) = split(/\//, $args, 2);
 267                                         $hash = sip2_message("11YN${ts}                  AO$loc|AA$patron|AB$barcode|AC$password|BON|BIN|");
 268
 269                                 } elsif ( $method eq 'checkin' ) {
 270                                         my $barcode = $args;
 271                                         $hash = sip2_message("09N${ts}${ts}AP|AO${loc}|AB$barcode|AC|BIN|");
 272                                 } else {
 273                                         print $client "HTTP/1.0 500 $method not implemented\r\n\r\n";
 274                                 }
 275
 276                                 if ( $hash ) {
 277                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 278                                                 encode_json( $hash );
 279                                 }
 280
 281                         } else {
 282                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 283                         }
 284                 } else {
 285                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 286                 }
 287                 close $client;
 288         }
 289
 290         die "server died";
 291 }
 292
 293 sub rfid_register {
 294         my $ip;
 295
 296         foreach ( split(/\n/, `ip addr` ) ) {
 297                 if ( /^\d:\s(\w+):\s/ ) {
 298                         $ip->{last} = $1;
 299                 } elsif ( /^\s+inet\s((\d+)\.(\d+)\.(\d+)\.(\d+))\/(\d+)/ ) {
 300                         $ip->{ $ip->{last} } = $1;
 301                 } else {
 302                         warn "# SKIP [$_]\n";
 303                 }
 304
 305         }
 306
 307         my $ua = LWP::UserAgent->new;
 308         my $url = URI->new( $rfid_url . '/register.pl');
 309         $url->query_form(
 310                 local_ip => $ip->{eth0},
 311         );
 312         warn "GET ",$url->as_string;
 313         my $response = $ua->get($url);
 314         if ( $response->is_success ) {
 315                 warn "# ", $response->decoded_content;
 316                 my $json = decode_json $response->decoded_content;
 317                 warn "REGISTER: ",dump($json);
 318                 return $json;
 319         } else {
 320                 warn "ERROR ", $response->status_line;
 321         }
 322 }
 323
 324 rfid_register;
 325 http_server;
 326
 327 __DATA__
 328 <html>
 329 <head>
 330 <title>RFID JSONP</title>
 331 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 332 <style type="text/css">
 333 .status {
 334         background: #ff8;
 335 }
 336
 337 .da {
 338         background: #fcc;
 339 }
 340
 341 .d7 {
 342         background: #cfc;
 343 }
 344
 345 label[for=pull-reader] {
 346         position: absolute;
 347         top: 1em;
 348         right: 1em;
 349         background: #eee;
 350 }
 351
 352 </style>
 353 <script type="text/javascript">
 354
 355 // mock console
 356 if(!window.console) {
 357         window.console = new function() {
 358                 this.info = function(str) {};
 359                 this.debug = function(str) {};
 360         };
 361 }
 362
 363
 364 function got_visible_tags(data,textStatus) {
 365         var html = 'No tags in range';
 366         if ( data.tags ) {
 367                 html = '<ul class="tags">';
 368                 $.each(data.tags, function(i,tag) {
 369                         console.debug( i, tag );
 370                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 371                         var content = tag.content || tag.borrower.cardnumber;
 372
 373                         if ( content ) {
 374                                 html += ' <a href="http://koha.example.com:8080/cgi-bin/koha/';
 375                                 if ( tag.type == 1 ) { // book
 376                                         html += 'catalogue/search.pl?q=';
 377                                 } else {
 378                                         html += 'members/member.pl?member=';
 379                                 }
 380                                 html += content + '" title="lookup in Koha" target="koha-lookup">' + content + '</a>';
 381                                 html += '</tt>';
 382 /*
 383                                 html += '<form method=get action=program style="display:inline">'
 384                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 385                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 386                                         + '</form>'
 387                                 ;
 388 */
 389                         } else {
 390                                 html += '</tt>';
 391                                 html += ' <form method=get action=program style="display:inline">'
 392                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 393                                         + '<input type=text name='+tag.sid+' size=12>'
 394                                         + '<input type=submit value="Program">'
 395                                         + '</form>'
 396                                 ;
 397                         }
 398                 });
 399                 html += '</ul>';
 400         }
 401
 402         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 403
 404         html = '<div class=status>'
 405                 + textStatus
 406                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 407                 + '</div>'
 408                 + html
 409                 ;
 410         $('#tags').html( html );
 411         window.setTimeout(function(){
 412                 scan_tags();
 413         },200); // re-scan every 200ms
 414 };
 415
 416 function scan_tags() {
 417         console.info('scan_tags');
 418         if ( $('input#pull-reader').attr('checked') )
 419                 $.getJSON("/scan?callback=?", got_visible_tags);
 420 }
 421
 422 $(document).ready(function() {
 423                 $('input#pull-reader').click( function() {
 424                         scan_tags();
 425                 });
 426                 $('input#pull-reader').attr('checked', true); // force check on load
 427
 428                 $('div#tags').click( function() {
 429                         $('input#pull-reader').attr('checked', false);
 430                 } );
 431
 432                 scan_tags();
 433 });
 434 </script>
 435 </head>
 436 <body>
 437
 438 <h1>RFID tags in range</h1>
 439
 440 <label for=pull-reader>
 441 <input id=pull-reader type=checkbox checked=1>
 442 active
 443 </label>
 444
 445 <div id="tags">
 446 RFID reader not found or driver program not started.
 447 </div>
 448
 449 </body>
 450 </html>