include/pubsubpublish.php

   1 <?php
   2
   3 use Friendica\App;
   4 use Friendica\Core\Config;
   5
   6 require_once('include/items.php');
   7 require_once('include/ostatus.php');
   8
   9 function pubsubpublish_run(&$argv, &$argc){
  10
  11         if ($argc > 1) {
  12                 $pubsubpublish_id = intval($argv[1]);
  13         } else {
  14                 // Inherit the creation time
  15                 $queue = dba::select('workerqueue', array('created'), array('pid' => getmypid()), array('limit' => 1));
  16                 if (dbm::is_result($queue)) {
  17                         $process_created = $queue['created'];
  18                 } else {
  19                         // Normally this shouldn't happen.
  20                         $process_created = datetime_convert();
  21                         logger('no inherited priority! Something is wrong.');
  22                 }
  23
  24                 // We'll push to each subscriber that has push > 0,
  25                 // i.e. there has been an update (set in notifier.php).
  26                 $r = q("SELECT `id`, `callback_url` FROM `push_subscriber` WHERE `push` > 0");
  27
  28                 foreach ($r as $rr) {
  29                         logger("Publish feed to ".$rr["callback_url"], LOGGER_DEBUG);
  30                         proc_run(array('priority' => PRIORITY_HIGH, 'created' => $process_created, 'dont_fork' => true),
  31                                         'include/pubsubpublish.php', $rr["id"]);
  32                 }
  33         }
  34
  35         handle_pubsubhubbub($pubsubpublish_id);
  36
  37         return;
  38 }
  39
  40 function handle_pubsubhubbub($id) {
  41         global $a;
  42
  43         $r = q("SELECT * FROM `push_subscriber` WHERE `id` = %d", intval($id));
  44         if (!dbm::is_result($r)) {
  45                 return;
  46         }
  47
  48         $rr = $r[0];
  49
  50         /// @todo Check server status with poco_check_server()
  51         // Before this can be done we need a way to safely detect the server url.
  52
  53         logger("Generate feed of user ".$rr['nickname']." to ".$rr['callback_url']." - last updated ".$rr['last_update'], LOGGER_DEBUG);
  54
  55         $params = ostatus::feed($a, $rr['nickname'], $rr['last_update']);
  56         $hmac_sig = hash_hmac("sha1", $params, $rr['secret']);
  57
  58         $headers = array("Content-type: application/atom+xml",
  59                         sprintf("Link: <%s>;rel=hub,<%s>;rel=self",
  60                                 App::get_baseurl().'/pubsubhubbub',
  61                                 $rr['topic']),
  62                         "X-Hub-Signature: sha1=".$hmac_sig);
  63
  64         logger('POST '.print_r($headers, true)."\n".$params, LOGGER_DEBUG);
  65
  66         post_url($rr['callback_url'], $params, $headers);
  67         $ret = $a->get_curl_code();
  68
  69         if ($ret >= 200 && $ret <= 299) {
  70                 logger('successfully pushed to '.$rr['callback_url']);
  71
  72                 // set last_update to "now", and reset push=0
  73                 $date_now = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  74                 q("UPDATE `push_subscriber` SET `push` = 0, last_update = '%s' WHERE id = %d",
  75                         dbesc($date_now),
  76                         intval($rr['id']));
  77
  78         } else {
  79                 logger('error when pushing to '.$rr['callback_url'].' HTTP: '.$ret);
  80
  81                 // we use the push variable also as a counter, if we failed we
  82                 // increment this until some upper limit where we give up
  83                 $new_push = intval($rr['push']) + 1;
  84
  85                 if ($new_push > 30) // OK, let's give up
  86                         $new_push = 0;
  87
  88                 q("UPDATE `push_subscriber` SET `push` = %d WHERE id = %d",
  89                         $new_push,
  90                         intval($rr['id']));
  91         }
  92 }