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                 // We'll push to each subscriber that has push > 0,
  15                 // i.e. there has been an update (set in notifier.php).
  16                 $r = q("SELECT `id`, `callback_url` FROM `push_subscriber` WHERE `push` > 0");
  17
  18                 foreach ($r as $rr) {
  19                         logger("Publish feed to ".$rr["callback_url"], LOGGER_DEBUG);
  20                         proc_run(PRIORITY_HIGH, 'include/pubsubpublish.php', $rr["id"]);
  21                 }
  22         }
  23
  24         handle_pubsubhubbub($pubsubpublish_id);
  25
  26         return;
  27 }
  28
  29 function handle_pubsubhubbub($id) {
  30         global $a;
  31
  32         $r = q("SELECT * FROM `push_subscriber` WHERE `id` = %d", intval($id));
  33         if (!$r)
  34                 return;
  35         else
  36                 $rr = $r[0];
  37
  38         /// @todo Check server status with poco_check_server()
  39         // Before this can be done we need a way to safely detect the server url.
  40
  41         logger("Generate feed of user ".$rr['nickname']." to ".$rr['callback_url']." - last updated ".$rr['last_update'], LOGGER_DEBUG);
  42
  43         $params = ostatus::feed($a, $rr['nickname'], $rr['last_update']);
  44         $hmac_sig = hash_hmac("sha1", $params, $rr['secret']);
  45
  46         $headers = array("Content-type: application/atom+xml",
  47                         sprintf("Link: <%s>;rel=hub,<%s>;rel=self",
  48                                 App::get_baseurl().'/pubsubhubbub',
  49                                 $rr['topic']),
  50                         "X-Hub-Signature: sha1=".$hmac_sig);
  51
  52         logger('POST '.print_r($headers, true)."\n".$params, LOGGER_DEBUG);
  53
  54         post_url($rr['callback_url'], $params, $headers);
  55         $ret = $a->get_curl_code();
  56
  57         if ($ret >= 200 && $ret <= 299) {
  58                 logger('successfully pushed to '.$rr['callback_url']);
  59
  60                 // set last_update to "now", and reset push=0
  61                 $date_now = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  62                 q("UPDATE `push_subscriber` SET `push` = 0, last_update = '%s' WHERE id = %d",
  63                         dbesc($date_now),
  64                         intval($rr['id']));
  65
  66         } else {
  67                 logger('error when pushing to '.$rr['callback_url'].' HTTP: '.$ret);
  68
  69                 // we use the push variable also as a counter, if we failed we
  70                 // increment this until some upper limit where we give up
  71                 $new_push = intval($rr['push']) + 1;
  72
  73                 if ($new_push > 30) // OK, let's give up
  74                         $new_push = 0;
  75
  76                 q("UPDATE `push_subscriber` SET `push` = %d WHERE id = %d",
  77                         $new_push,
  78                         intval($rr['id']));
  79         }
  80 }