include/pubsubpublish.php

   1 <?php
   2
   3 use Friendica\Core\Config;
   4
   5 require_once('include/items.php');
   6 require_once('include/ostatus.php');
   7
   8 function pubsubpublish_run(&$argv, &$argc){
   9
  10         if ($argc > 1) {
  11                 $pubsubpublish_id = intval($argv[1]);
  12         } else {
  13                 // We'll push to each subscriber that has push > 0,
  14                 // i.e. there has been an update (set in notifier.php).
  15                 $r = q("SELECT `id`, `callback_url` FROM `push_subscriber` WHERE `push` > 0");
  16
  17                 foreach ($r as $rr) {
  18                         logger("Publish feed to ".$rr["callback_url"], LOGGER_DEBUG);
  19                         proc_run(PRIORITY_HIGH, 'include/pubsubpublish.php', $rr["id"]);
  20                 }
  21         }
  22
  23         handle_pubsubhubbub($pubsubpublish_id);
  24
  25         return;
  26 }
  27
  28 function handle_pubsubhubbub($id) {
  29         global $a;
  30
  31         $r = q("SELECT * FROM `push_subscriber` WHERE `id` = %d", intval($id));
  32         if (!$r)
  33                 return;
  34         else
  35                 $rr = $r[0];
  36
  37         logger("Generate feed of user ".$rr['nickname']." to ".$rr['callback_url']." - last updated ".$rr['last_update'], LOGGER_DEBUG);
  38
  39         $params = ostatus::feed($a, $rr['nickname'], $rr['last_update']);
  40         $hmac_sig = hash_hmac("sha1", $params, $rr['secret']);
  41
  42         $headers = array("Content-type: application/atom+xml",
  43                         sprintf("Link: <%s>;rel=hub,<%s>;rel=self",
  44                                 App::get_baseurl().'/pubsubhubbub',
  45                                 $rr['topic']),
  46                         "X-Hub-Signature: sha1=".$hmac_sig);
  47
  48         logger('POST '.print_r($headers, true)."\n".$params, LOGGER_DEBUG);
  49
  50         post_url($rr['callback_url'], $params, $headers);
  51         $ret = $a->get_curl_code();
  52
  53         if ($ret >= 200 && $ret <= 299) {
  54                 logger('successfully pushed to '.$rr['callback_url']);
  55
  56                 // set last_update to "now", and reset push=0
  57                 $date_now = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  58                 q("UPDATE `push_subscriber` SET `push` = 0, last_update = '%s' WHERE id = %d",
  59                         dbesc($date_now),
  60                         intval($rr['id']));
  61
  62         } else {
  63                 logger('error when pushing to '.$rr['callback_url'].' HTTP: '.$ret);
  64
  65                 // we use the push variable also as a counter, if we failed we
  66                 // increment this until some upper limit where we give up
  67                 $new_push = intval($rr['push']) + 1;
  68
  69                 if ($new_push > 30) // OK, let's give up
  70                         $new_push = 0;
  71
  72                 q("UPDATE `push_subscriber` SET `push` = %d WHERE id = %d",
  73                         $new_push,
  74                         intval($rr['id']));
  75         }
  76 }