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 $rr) {
  16
  17                 logger("Generate feed for user ".$rr['nickname']." - last updated ".$rr['last_update'], LOGGER_DEBUG);
  18
  19                 $params = ostatus_feed($a, $rr['nickname'], $rr['last_update']);
  20                 $hmac_sig = hash_hmac("sha1", $params, $rr['secret']);
  21
  22                 $headers = array("Content-type: application/atom+xml",
  23                                 sprintf("Link: <%s>;rel=hub,<%s>;rel=self",
  24                                         $a->get_baseurl().'/pubsubhubbub',
  25                                         $rr['topic']),
  26                                 "X-Hub-Signature: sha1=".$hmac_sig);
  27
  28                 logger('POST '.print_r($headers, true)."\n".$params, LOGGER_DEBUG);
  29
  30                 post_url($rr['callback_url'], $params, $headers);
  31                 $ret = $a->get_curl_code();
  32
  33                 if ($ret >= 200 && $ret <= 299) {
  34                         logger('successfully pushed to '.$rr['callback_url']);
  35
  36                         // set last_update to "now", and reset push=0
  37                         $date_now = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  38                         q("UPDATE `push_subscriber` SET `push` = 0, last_update = '%s' WHERE id = %d",
  39                                 dbesc($date_now),
  40                                 intval($rr['id']));
  41
  42                 } else {
  43                         logger('error when pushing to '.$rr['callback_url'].' HTTP: '.$ret);
  44
  45                         // we use the push variable also as a counter, if we failed we
  46                         // increment this until some upper limit where we give up
  47                         $new_push = intval($rr['push']) + 1;
  48
  49                         if ($new_push > 30) // OK, let's give up
  50                                 $new_push = 0;
  51
  52                         q("UPDATE `push_subscriber` SET `push` = %d WHERE id = %d",
  53                                 $new_push,
  54                                 intval($rr['id']));
  55                 }
  56         }
  57
  58         logger('done');
  59 }
  60
  61
  62 function pubsubpublish_run(&$argv, &$argc){
  63         global $a, $db;
  64
  65         if(is_null($a)){
  66                 $a = new App;
  67         }
  68
  69         if(is_null($db)){
  70                 @include(".htconfig.php");
  71                 require_once("include/dba.php");
  72                 $db = new dba($db_host, $db_user, $db_pass, $db_data);
  73                 unset($db_host, $db_user, $db_pass, $db_data);
  74         };
  75
  76         require_once('include/items.php');
  77         require_once('include/pidfile.php');
  78
  79         load_config('config');
  80         load_config('system');
  81
  82         $lockpath = get_lockpath();
  83         if ($lockpath != '') {
  84                 $pidfile = new pidfile($lockpath, 'pubsubpublish');
  85                 if($pidfile->is_already_running()) {
  86                         logger("Already running");
  87                         if ($pidfile->running_time() > 9*60) {
  88                                 $pidfile->kill();
  89                                 logger("killed stale process");
  90                                 // Calling a new instance
  91                                 proc_run('php',"include/pubsubpublish.php");
  92                         }
  93                         return;
  94                 }
  95         }
  96
  97         $a->set_baseurl(get_config('system','url'));
  98
  99         load_hooks();
 100
 101         if($argc > 1)
 102                 $pubsubpublish_id = intval($argv[1]);
 103         else
 104                 $pubsubpublish_id = 0;
 105
 106         handle_pubsubhubbub();
 107
 108         return;
 109
 110 }
 111
 112 if (array_search(__file__,get_included_files())===0){
 113   pubsubpublish_run($_SERVER["argv"],$_SERVER["argc"]);
 114   killme();
 115 }
 116