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