include/poller.php

   1 <?php
   2 require_once("boot.php");
   3
   4 function poller_run($argv, $argc){
   5   global $a, $db;
   6
   7   if(is_null($a)){
   8     $a = new App;
   9   }
  10
  11   if(is_null($db)){
  12     @include(".htconfig.php");
  13     require_once("dba.php");
  14     $db = new dba($db_host, $db_user, $db_pass, $db_data);
  15     unset($db_host, $db_user, $db_pass, $db_data);
  16   };
  17
  18         require_once('session.php');
  19         require_once('datetime.php');
  20         require_once('simplepie/simplepie.inc');
  21         require_once('include/items.php');
  22         require_once('include/Contact.php');
  23
  24         $a->set_baseurl(get_config('system','url'));
  25
  26         logger('poller: start');
  27
  28         // run queue delivery process in the background
  29
  30         $php_path = ((x($a->config,'php_path') && strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
  31         //proc_close(proc_open("\"$php_path\" \"include/queue.php\" &", array(), $foo));
  32         proc_run($php_path,"include/queue.php");
  33
  34         // clear old cache
  35         q("DELETE FROM `cache` WHERE `updated`<'%s'",
  36                 dbesc(datetime_convert('UTC','UTC',"now - 30 days")));
  37
  38         $manual_id  = 0;
  39         $hub_update = false;
  40         $force      = false;
  41
  42         if(($argc > 1) && ($argv[1] == 'force'))
  43                 $force = true;
  44
  45         if(($argc > 1) && intval($argv[1])) {
  46                 $manual_id = intval($argv[1]);
  47                 $force     = true;
  48         }
  49
  50         $sql_extra = (($manual_id) ? " AND `id` = $manual_id " : "");
  51
  52         // 'stat' clause is a temporary measure until we have federation subscriptions working both directions
  53         $contacts = q("SELECT * FROM `contact`
  54                 WHERE ( ( `network` = 'dfrn' AND ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1)))
  55                 OR ( `network` IN ( 'stat', 'feed' ) AND `poll` != '' ))
  56                 $sql_extra
  57                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()");
  58
  59         if(! count($contacts)){
  60                 return;
  61         }
  62
  63         foreach($contacts as $contact) {
  64
  65                 if($manual_id)
  66                         $contact['last-update'] = '0000-00-00 00:00:00';
  67
  68                 if($contact['priority'] || $contact['subhub']) {
  69
  70                         $hub_update = true;
  71                         $update     = false;
  72
  73                         $t = $contact['last-update'];
  74
  75                         // We should be getting everything via a hub. But just to be sure, let's check once a day.
  76                         // (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
  77                         // This also lets us update our subscription to the hub, and add or replace hubs in case it
  78                         // changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'.
  79
  80
  81                         if($contact['subhub']) {
  82                                 $interval = get_config('system','pushpoll_frequency');
  83                                 $contact['priority'] = (($interval !== false) ? intval($interval) : 3);
  84                                 $hub_update = false;
  85
  86                                 if((datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day")) || $force)
  87                                                 $hub_update = true;
  88                         }
  89
  90
  91                         /**
  92                          * Based on $contact['priority'], should we poll this site now? Or later?
  93                          */
  94
  95                         switch ($contact['priority']) {
  96                                 case 5:
  97                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  98                                                 $update = true;
  99                                         break;
 100                                 case 4:
 101                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
 102                                                 $update = true;
 103                                         break;
 104                                 case 3:
 105                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
 106                                                 $update = true;
 107                                         break;
 108                                 case 2:
 109                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
 110                                                 $update = true;
 111                                         break;
 112                                 case 1:
 113                                 default:
 114                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
 115                                                 $update = true;
 116                                         break;
 117                         }
 118                         if((! $update) && (! $force))
 119                                 continue;
 120                 }
 121
 122                 $importer_uid = $contact['uid'];
 123
 124                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
 125                         intval($importer_uid)
 126                 );
 127                 if(! count($r))
 128                         continue;
 129
 130                 $importer = $r[0];
 131
 132                 logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 133
 134                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
 135                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
 136                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
 137                 );
 138
 139                 if($contact['network'] === 'dfrn') {
 140
 141                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 142
 143                         if(intval($contact['duplex']) && $contact['dfrn-id'])
 144                                 $idtosend = '0:' . $orig_id;
 145                         if(intval($contact['duplex']) && $contact['issued-id'])
 146                                 $idtosend = '1:' . $orig_id;
 147
 148                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 149                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 150                                 . '&type=data&last_update=' . $last_update ;
 151
 152                         $xml = fetch_url($url);
 153
 154                         logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
 155
 156
 157                         if(! $xml) {
 158                                 logger("poller: $url appears to be dead - marking for death ");
 159                                 // dead connection - might be a transient event, or this might
 160                                 // mean the software was uninstalled or the domain expired.
 161                                 // Will keep trying for one month.
 162                                 mark_for_death($contact);
 163
 164                                 // set the last-update so we don't keep polling
 165
 166                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 167                                         dbesc(datetime_convert()),
 168                                         intval($contact['id'])
 169                                 );
 170
 171                                 continue;
 172                         }
 173
 174                         if(! strstr($xml,'<?xml')) {
 175                                 logger('poller: response from ' . $url . ' did not contain XML.');
 176                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 177                                         dbesc(datetime_convert()),
 178                                         intval($contact['id'])
 179                                 );
 180                                 continue;
 181                         }
 182
 183
 184                         $res = simplexml_load_string($xml);
 185
 186                         if(intval($res->status) == 1) {
 187                                 logger("poller: $url replied status 1 - marking for death ");
 188
 189                                 // we may not be friends anymore. Will keep trying for one month.
 190                                 // set the last-update so we don't keep polling
 191
 192                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 193                                         dbesc(datetime_convert()),
 194                                         intval($contact['id'])
 195                                 );
 196
 197                                 mark_for_death($contact);
 198                         }
 199                         else {
 200                                 if($contact['term-date'] != '0000-00-00 00:00:00') {
 201                                         logger("poller: $url back from the dead - removing mark for death");
 202                                         unmark_for_death($contact);
 203                                 }
 204                         }
 205
 206                         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 207                                 continue;
 208
 209                         $postvars = array();
 210
 211                         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 212                         $challenge    = hex2bin((string) $res->challenge);
 213
 214                         $final_dfrn_id = '';
 215
 216                         if(($contact['duplex']) && strlen($contact['prvkey'])) {
 217                                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 218                                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 219                         }
 220                         else {
 221                                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 222                                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 223                         }
 224
 225                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 226
 227                         if(strpos($final_dfrn_id,':') == 1)
 228                                 $final_dfrn_id = substr($final_dfrn_id,2);
 229
 230                         if($final_dfrn_id != $orig_id) {
 231
 232                                 // did not decode properly - cannot trust this site
 233                                 continue;
 234                         }
 235
 236                         $postvars['dfrn_id'] = $idtosend;
 237                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 238
 239                         $xml = post_url($contact['poll'],$postvars);
 240                 }
 241                 else {
 242                         // $contact['network'] !== 'dfrn'
 243
 244                         $xml = fetch_url($contact['poll']);
 245                 }
 246
 247                 logger('poller: received xml : ' . $xml, LOGGER_DATA);
 248
 249                 if(! strlen($xml))
 250                         continue;
 251
 252                 consume_feed($xml,$importer,$contact,$hub,1);
 253
 254                 // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 255
 256                 consume_feed($xml,$importer,$contact,$hub,1);
 257
 258
 259                 if((strlen($hub)) && ($hub_update)
 260                         && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
 261                         logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 262                         $hubs = explode(',', $hub);
 263                         if(count($hubs)) {
 264                                 foreach($hubs as $h) {
 265                                         $h = trim($h);
 266                                         if(! strlen($h))
 267                                                 continue;
 268                                         subscribe_to_hub($h,$importer,$contact);
 269                                 }
 270                         }
 271                 }
 272
 273
 274                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 275                         dbesc(datetime_convert()),
 276                         intval($contact['id'])
 277                 );
 278
 279                 // loop - next contact
 280         }
 281
 282         return;
 283 }
 284
 285 if (array_search(__file__,get_included_files())===0){
 286   poller_run($argv,$argc);
 287   killme();
 288 }