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
  23 my $debug = 1;
  24 my $listen = '127.0.0.1:9000';
  25 $listen = ':9000';
  26 my $reader;
  27 my $koha_url = 'http://ffzg.koha-dev.rot13.org:8080';
  28 # internal URL so we can find local address of machine and vmware NAT
  29 my $rfid_url = 'http://rfid.koha-dev.vbz.ffzg.hr';
  30
  31 use Getopt::Long;
  32
  33 GetOptions(
  34         'debug!'    => \$debug,
  35         'listen=s', => \$listen,
  36         'reader=s', => \$reader,
  37         'koha=s',       => \$koha_url,
  38 ) || die $!;
  39
  40 our $rfid_sid_cache;
  41
  42 sub rfid_borrower {
  43         my $hash = shift;
  44         if ( my $json = $rfid_sid_cache->{ $hash->{sid} } ) {
  45                 return $json;
  46         }
  47         my $ua = LWP::UserAgent->new;
  48         my $url = URI->new( $koha_url . '/cgi-bin/koha/ffzg/rfid/borrower.pl');
  49         $url->query_form(
  50                   RFID_SID => $hash->{sid}
  51                 , OIB => $hash->{OIB}
  52                 , JMBAG => $hash->{JMBAG}
  53         );
  54         warn "GET ",$url->as_string;
  55         my $response = $ua->get($url);
  56         if ( $response->is_success ) {
  57                 my $json = decode_json $response->decoded_content;
  58                 $rfid_sid_cache->{ $hash->{sid} } = $json;
  59                 return $json;
  60         } else {
  61                 warn "ERROR ", $response->status_line;
  62         }
  63 }
  64
  65 use lib 'lib';
  66 use Biblio::RFID::RFID501;
  67 use Biblio::RFID::Reader;
  68 my $rfid = Biblio::RFID::Reader->new( shift @ARGV );
  69 $rfid->debug( $debug );
  70
  71 my $index_html;
  72 {
  73         local $/ = undef;
  74         $index_html = <DATA>;
  75         $index_html =~ s{http://koha.example.com:8080}{$koha_url}sg;
  76 }
  77
  78 my $server_url;
  79
  80 sub http_server {
  81
  82         my $server = IO::Socket::INET->new(
  83                 Proto     => 'tcp',
  84                 LocalAddr => $listen,
  85                 Listen    => SOMAXCONN,
  86                 Reuse     => 1
  87         );
  88
  89         die "can't setup server: $!" unless $server;
  90
  91         $server_url = 'http://' . $listen;
  92         print "Server $0 ready at $server_url\n";
  93
  94         while (my $client = $server->accept()) {
  95                 $client->autoflush(1);
  96                 my $request = <$client>;
  97
  98                 warn "WEB << $request\n" if $debug;
  99                 my $path;
 100
 101                 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
 102                         my $method = $1;
 103                         my $param;
 104                         if ( $method =~ s{\?(.+)}{} ) {
 105                                 foreach my $p ( split(/[&;]/, $1) ) {
 106                                         my ($n,$v) = split(/=/, $p, 2);
 107                                         $param->{$n} = $v;
 108                                 }
 109                                 warn "WEB << param: ",dump( $param ) if $debug;
 110                         }
 111                         $path = $method;
 112
 113                         if ( $path eq '/' ) {
 114                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n$index_html";
 115                         } elsif ( $path =~ m{^/(examples/.+)} ) {
 116                                 $path = $1; # FIXME prefix with dir for installation
 117                                 my $size = -s $path;
 118                                 warn "static $path $size bytes\n";
 119                                 my $content_type = 'text/plain';
 120                                 $content_type = 'application/javascript' if $path =~ /\.js/;
 121                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: $content_type\r\nContent-Length: $size\r\n\r\n";
 122                                 {
 123                                         local $/ = undef;
 124                                         open(my $fh, '<', $path) || die "can't open $path: $!";
 125                                         while(<$fh>) {
 126                                                 print $client $_;
 127                                         }
 128                                         close($fh);
 129                                 }
 130                         } elsif ( $method =~ m{/scan} ) {
 131                                 my @tags = $rfid->tags;
 132                                 my $json = { time => time() };
 133                                 foreach my $tag ( @tags ) {
 134                                         my $hash = $rfid->to_hash( $tag );
 135                                         $hash->{sid}  = $tag;
 136                                         if ( $hash->{tag_type} eq 'SmartX' ) {
 137                                                 my $borrower = rfid_borrower $hash;
 138                                                 if ( exists $borrower->{error} ) {
 139                                                         warn "ERROR ", dump($borrower);
 140                                                 } else {
 141                                                         $hash->{borrower} = $borrower->{borrower};
 142                                                 }
 143                                         } else {
 144                                                 $hash->{security} = uc unpack 'H*', $rfid->afi( $tag );
 145                                         }
 146                                         push @{ $json->{tags} }, $hash;
 147                                 };
 148                                 warn "#### ", encode_json($json);
 149                                 print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 150                                         $param->{callback}, "(", encode_json($json), ")\r\n";
 151                         } elsif ( $method =~ m{/program} ) {
 152
 153                                 my $status = 501; # Not implementd
 154
 155                                 foreach my $p ( keys %$param ) {
 156                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 157                                         my $tag = $1;
 158                                         my $content = Biblio::RFID::RFID501->from_hash({ content => $param->{$p} });
 159                                         $content    = Biblio::RFID::RFID501->blank if $param->{$p} eq 'blank';
 160                                         $status = 302;
 161
 162                                         warn "PROGRAM $tag $content\n";
 163                                         $rfid->write_blocks( $tag => $content );
 164                                         $rfid->write_afi(    $tag => chr( $param->{$p} =~ /^130/ ? 0xDA : 0xD7 ) );
 165                                 }
 166
 167                                 print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 168
 169                         } elsif ( $method =~ m{/secure(.js)} ) {
 170
 171                                 my $json = $1;
 172
 173                                 my $status = 501; # Not implementd
 174
 175                                 foreach my $p ( keys %$param ) {
 176                                         next unless $p =~ m/^(E[0-9A-F]{15})$/;
 177                                         my $tag = $1;
 178                                         my $data = $param->{$p};
 179                                         $status = 302;
 180
 181                                         warn "SECURE $tag $data\n";
 182                                         $rfid->write_afi( $tag => hex($data) );
 183                                 }
 184
 185                                 if ( $json ) {
 186                                         print $client "HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n",
 187                                                 $param->{callback}, "({ ok: 1 })\r\n";
 188                                 } else {
 189                                         print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n";
 190                                 }
 191
 192                         } else {
 193                                 print $client "HTTP/1.0 404 Unkown method\r\n\r\n";
 194                         }
 195                 } else {
 196                         print $client "HTTP/1.0 500 No method\r\n\r\n";
 197                 }
 198                 close $client;
 199         }
 200
 201         die "server died";
 202 }
 203
 204 sub rfid_register {
 205         my $ip;
 206
 207         foreach ( split(/\n/, `ip addr` ) ) {
 208                 if ( /^\d:\s(\w+):\s/ ) {
 209                         $ip->{last} = $1;
 210                 } elsif ( /^\s+inet\s((\d+)\.(\d+)\.(\d+)\.(\d+))\/(\d+)/ ) {
 211                         $ip->{ $ip->{last} } = $1;
 212                 } else {
 213                         warn "# SKIP [$_]\n";
 214                 }
 215
 216         }
 217
 218         my $ua = LWP::UserAgent->new;
 219         my $url = URI->new( $rfid_url . '/register.pl');
 220         $url->query_form(
 221                 local_ip => $ip->{eth0},
 222         );
 223         warn "GET ",$url->as_string;
 224         my $response = $ua->get($url);
 225         if ( $response->is_success ) {
 226                 warn "# ", $response->decoded_content;
 227                 my $json = decode_json $response->decoded_content;
 228                 warn "REGISTER: ",dump($json);
 229                 return $json;
 230         } else {
 231                 warn "ERROR ", $response->status_line;
 232         }
 233 }
 234
 235 rfid_register;
 236 http_server;
 237
 238 __DATA__
 239 <html>
 240 <head>
 241 <title>RFID JSONP</title>
 242 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 243 <style type="text/css">
 244 .status {
 245         background: #ff8;
 246 }
 247
 248 .da {
 249         background: #fcc;
 250 }
 251
 252 .d7 {
 253         background: #cfc;
 254 }
 255
 256 label[for=pull-reader] {
 257         position: absolute;
 258         top: 1em;
 259         right: 1em;
 260         background: #eee;
 261 }
 262
 263 </style>
 264 <script type="text/javascript">
 265
 266 // mock console
 267 if(!window.console) {
 268         window.console = new function() {
 269                 this.info = function(str) {};
 270                 this.debug = function(str) {};
 271         };
 272 }
 273
 274
 275 function got_visible_tags(data,textStatus) {
 276         var html = 'No tags in range';
 277         if ( data.tags ) {
 278                 html = '<ul class="tags">';
 279                 $.each(data.tags, function(i,tag) {
 280                         console.debug( i, tag );
 281                         html += '<li><tt class="' + tag.security + '">' + tag.sid;
 282                         var content = tag.content || tag.borrower.cardnumber;
 283
 284                         if ( content ) {
 285                                 html += ' <a href="http://koha.example.com:8080/cgi-bin/koha/';
 286                                 if ( tag.type == 1 ) { // book
 287                                         html += 'catalogue/search.pl?q=';
 288                                 } else {
 289                                         html += 'members/member.pl?member=';
 290                                 }
 291                                 html += content + '" title="lookup in Koha" target="koha-lookup">' + content + '</a>';
 292                                 html += '</tt>';
 293 /*
 294                                 html += '<form method=get action=program style="display:inline">'
 295                                         + '<input type=hidden name='+tag.sid+' value="blank">'
 296                                         + '<input type=submit value="Blank" onclick="return confirm(\'Blank tag '+tag.sid+'\')">'
 297                                         + '</form>'
 298                                 ;
 299 */
 300                         } else {
 301                                 html += '</tt>';
 302                                 html += ' <form method=get action=program style="display:inline">'
 303                                         + '<!-- <input type=checkbox name=secure value='+tag.sid+' title="secure tag"> -->'
 304                                         + '<input type=text name='+tag.sid+' size=12>'
 305                                         + '<input type=submit value="Program">'
 306                                         + '</form>'
 307                                 ;
 308                         }
 309                 });
 310                 html += '</ul>';
 311         }
 312
 313         var arrows = Array( 8592, 8598, 8593, 8599, 8594, 8600, 8595, 8601 );
 314
 315         html = '<div class=status>'
 316                 + textStatus
 317                 + ' &#' + arrows[ data.time % arrows.length ] + ';'
 318                 + '</div>'
 319                 + html
 320                 ;
 321         $('#tags').html( html );
 322         window.setTimeout(function(){
 323                 scan_tags();
 324         },200); // re-scan every 200ms
 325 };
 326
 327 function scan_tags() {
 328         console.info('scan_tags');
 329         if ( $('input#pull-reader').attr('checked') )
 330                 $.getJSON("/scan?callback=?", got_visible_tags);
 331 }
 332
 333 $(document).ready(function() {
 334                 $('input#pull-reader').click( function() {
 335                         scan_tags();
 336                 });
 337                 $('input#pull-reader').attr('checked', true); // force check on load
 338
 339                 $('div#tags').click( function() {
 340                         $('input#pull-reader').attr('checked', false);
 341                 } );
 342
 343                 scan_tags();
 344 });
 345 </script>
 346 </head>
 347 <body>
 348
 349 <h1>RFID tags in range</h1>
 350
 351 <label for=pull-reader>
 352 <input id=pull-reader type=checkbox checked=1>
 353 active
 354 </label>
 355
 356 <div id="tags">
 357 RFID reader not found or driver program not started.
 358 </div>
 359
 360 </body>
 361 </html>