plugins/FBConnect/FBC_XDReceiver.php

   1 <?php
   2
   3 if (!defined('LACONICA')) {
   4     exit(1);
   5 }
   6
   7 /*
   8  * Generates the cross domain communication channel file
   9  * (xd_receiver.html). By generating it we can add some caching
  10  * instructions.
  11  *
  12  * See: http://wiki.developers.facebook.com/index.php/Cross_Domain_Communication_Channel
  13  */
  14 class FBC_XDReceiverAction extends Action
  15 {
  16
  17     /**
  18      * Do we need to write to the database?
  19      *
  20      * @return boolean true
  21      */
  22
  23     function isReadonly()
  24     {
  25         return true;
  26     }
  27
  28     /**
  29      * Handle a request
  30      *
  31      * @param array $args Arguments from $_REQUEST
  32      *
  33      * @return void
  34      */
  35
  36     function handle($args)
  37     {
  38         // Parent handling, including cache check
  39         parent::handle($args);
  40         $this->showPage();
  41     }
  42
  43     function showPage()
  44     {
  45         // cache the xd_receiver
  46         header('Cache-Control: max-age=225065900');
  47         header('Expires:');
  48         header('Pragma:');
  49
  50         $this->startXML('html',
  51                         '-//W3C//DTD XHTML 1.0 Strict//EN',
  52                         'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
  53
  54         $language = $this->getLanguage();
  55
  56         $this->elementStart('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
  57                                           'xml:lang' => $language,
  58                                           'lang' => $language));
  59         $this->elementStart('head');
  60         $this->element('title', null, 'cross domain receiver page');
  61         $this->element('script',
  62             array('src' =>
  63                 'http://static.ak.connect.facebook.com/js/api_lib/v0.4/XdCommReceiver.debug.js',
  64                 'type' => 'text/javascript'), '');
  65         $this->elementEnd('head');
  66         $this->elementStart('body');
  67         $this->elementEnd('body');
  68
  69         $this->elementEnd('html');
  70     }
  71
  72 }
  73