include/pubsubpublish.php

   1 <?php
   2 require_once("boot.php");
   3 require_once("include/ostatus.php");
   4
   5 function handle_pubsubhubbub() {
   6         global $a, $db;
   7
   8         logger('start');
   9
  10         // We'll push to each subscriber that has push > 0,
  11         // i.e. there has been an update (set in notifier.php).
  12
  13         $r = q("SELECT * FROM `push_subscriber` WHERE `push` > 0");
  14
  15         foreach($r as $rr) {
  16                 //$params = get_feed_for($a, '', $rr['nickname'], $rr['last_update'], 0, true);
  17                 $params = ostatus_feed($a, $rr['nickname'], $rr['last_update']);
  18                 $hmac_sig = hash_hmac("sha1", $params, $rr['secret']);
  19
  20                 $headers = array("Content-type: application/atom+xml",
  21                                                 sprintf("Link: <%s>;rel=hub," .
  22                                                                 "<%s>;rel=self",
  23                                                                 $a->get_baseurl() . '/pubsubhubbub',
  24                                                                 $rr['topic']),
  25                                                 "X-Hub-Signature: sha1=" . $hmac_sig);
  26
  27                 logger('POST '. print_r($headers, true)."\n".$params, LOGGER_DEBUG);
  28
  29                 post_url($rr['callback_url'], $params, $headers);
  30                 $ret = $a->get_curl_code();
  31
  32                 if ($ret >= 200 && $ret <= 299) {
  33                         logger('successfully pushed to '.$rr['callback_url']);
  34
  35                         // set last_update to "now", and reset push=0
  36                         $date_now = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  37                         q("UPDATE `push_subscriber` SET `push` = 0, last_update = '%s' WHERE id = %d",
  38                                 dbesc($date_now),
  39                                 intval($rr['id']));
  40
  41                 } else {
  42                         logger('error when pushing to '.$rr['callback_url'].' HTTP: '.$ret);
  43
  44                         // we use the push variable also as a counter, if we failed we
  45                         // increment this until some upper limit where we give up
  46                         $new_push = intval($rr['push']) + 1;
  47
  48                         if ($new_push > 30) // OK, let's give up
  49                                 $new_push = 0;
  50
  51                         q("UPDATE `push_subscriber` SET `push` = %d WHERE id = %d",
  52                                 $new_push,
  53                                 intval($rr['id']));
  54                 }
  55         }
  56
  57         logger('done');
  58 }
  59
  60
  61 function pubsubpublish_run(&$argv, &$argc){
  62         global $a, $db;
  63
  64         if(is_null($a)){
  65                 $a = new App;
  66         }
  67
  68         if(is_null($db)){
  69                 @include(".htconfig.php");
  70                 require_once("include/dba.php");
  71                 $db = new dba($db_host, $db_user, $db_pass, $db_data);
  72                 unset($db_host, $db_user, $db_pass, $db_data);
  73         };
  74
  75         require_once('include/items.php');
  76         require_once('include/pidfile.php');
  77
  78         load_config('config');
  79         load_config('system');
  80
  81         $lockpath = get_lockpath();
  82         if ($lockpath != '') {
  83                 $pidfile = new pidfile($lockpath, 'pubsubpublish');
  84                 if($pidfile->is_already_running()) {
  85                         logger("Already running");
  86                         if ($pidfile->running_time() > 9*60) {
  87                                 $pidfile->kill();
  88                                 logger("killed stale process");
  89                                 // Calling a new instance
  90                                 proc_run('php',"include/pubsubpublish.php");
  91                         }
  92                         return;
  93                 }
  94         }
  95
  96         $a->set_baseurl(get_config('system','url'));
  97
  98         load_hooks();
  99
 100         if($argc > 1)
 101                 $pubsubpublish_id = intval($argv[1]);
 102         else
 103                 $pubsubpublish_id = 0;
 104
 105         handle_pubsubhubbub();
 106
 107         return;
 108
 109 }
 110
 111 if (array_search(__file__,get_included_files())===0){
 112   pubsubpublish_run($_SERVER["argv"],$_SERVER["argc"]);
 113   killme();
 114 }
 115