include/pubsubpublish.php

   1 <?php
   2 use \Friendica\Core\Config;
   3
   4 require_once('include/items.php');
   5 require_once('include/ostatus.php');
   6
   7 function pubsubpublish_run(&$argv, &$argc){
   8
   9         if ($argc > 1) {
  10                 $pubsubpublish_id = intval($argv[1]);
  11         } else {
  12                 // We'll push to each subscriber that has push > 0,
  13                 // i.e. there has been an update (set in notifier.php).
  14                 $r = q("SELECT `id`, `callback_url` FROM `push_subscriber` WHERE `push` > 0");
  15
  16                 foreach ($r as $rr) {
  17                         logger("Publish feed to ".$rr["callback_url"], LOGGER_DEBUG);
  18                         proc_run(PRIORITY_HIGH, 'include/pubsubpublish.php', $rr["id"]);
  19                 }
  20         }
  21
  22         handle_pubsubhubbub($pubsubpublish_id);
  23
  24         return;
  25 }
  26
  27 function handle_pubsubhubbub($id) {
  28         global $a;
  29
  30         $r = q("SELECT * FROM `push_subscriber` WHERE `id` = %d", intval($id));
  31         if (!$r)
  32                 return;
  33         else
  34                 $rr = $r[0];
  35
  36         /// @todo Check server status with poco_check_server()
  37         // Before this can be done we need a way to safely detect the server url.
  38
  39         logger("Generate feed of user ".$rr['nickname']." to ".$rr['callback_url']." - last updated ".$rr['last_update'], LOGGER_DEBUG);
  40
  41         $params = ostatus::feed($a, $rr['nickname'], $rr['last_update']);
  42         $hmac_sig = hash_hmac("sha1", $params, $rr['secret']);
  43
  44         $headers = array("Content-type: application/atom+xml",
  45                         sprintf("Link: <%s>;rel=hub,<%s>;rel=self",
  46                                 App::get_baseurl().'/pubsubhubbub',
  47                                 $rr['topic']),
  48                         "X-Hub-Signature: sha1=".$hmac_sig);
  49
  50         logger('POST '.print_r($headers, true)."\n".$params, LOGGER_DEBUG);
  51
  52         post_url($rr['callback_url'], $params, $headers);
  53         $ret = $a->get_curl_code();
  54
  55         if ($ret >= 200 && $ret <= 299) {
  56                 logger('successfully pushed to '.$rr['callback_url']);
  57
  58                 // set last_update to "now", and reset push=0
  59                 $date_now = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  60                 q("UPDATE `push_subscriber` SET `push` = 0, last_update = '%s' WHERE id = %d",
  61                         dbesc($date_now),
  62                         intval($rr['id']));
  63
  64         } else {
  65                 logger('error when pushing to '.$rr['callback_url'].' HTTP: '.$ret);
  66
  67                 // we use the push variable also as a counter, if we failed we
  68                 // increment this until some upper limit where we give up
  69                 $new_push = intval($rr['push']) + 1;
  70
  71                 if ($new_push > 30) // OK, let's give up
  72                         $new_push = 0;
  73
  74                 q("UPDATE `push_subscriber` SET `push` = %d WHERE id = %d",
  75                         $new_push,
  76                         intval($rr['id']));
  77         }
  78 }