include/poller.php

   1 <?php
   2
   3
   4         require_once('boot.php');
   5
   6         $a = new App;
   7
   8         @include('.htconfig.php');
   9         require_once('dba.php');
  10         $db = new dba($db_host, $db_user, $db_pass, $db_data);
  11                 unset($db_host, $db_user, $db_pass, $db_data);
  12
  13         require_once('session.php');
  14         require_once('datetime.php');
  15         require_once('simplepie/simplepie.inc');
  16         require_once('include/items.php');
  17
  18         require_once('include/Contact.php');
  19
  20         $debugging = get_config('system','debugging');
  21
  22         $a->set_baseurl(get_config('system','url'));
  23
  24         // 'stat' clause is a temporary measure until we have federation subscriptions working both directions
  25         $contacts = q("SELECT * FROM `contact`
  26                 WHERE ( ( `network` = 'dfrn' AND ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1)))
  27                 OR ( `network` = 'stat' AND `poll` != '' ) )
  28                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()");
  29
  30         if(! count($contacts))
  31                 killme();
  32
  33         foreach($contacts as $contact) {
  34
  35                 if($contact['priority'] || $contact['subhub']) {
  36
  37                         $update = false;
  38
  39                         // We should be getting everything via a hub. But just to be sure, let's check once a day.
  40                         // This also lets us update our subscription to the hub, and add or replace hubs in case it
  41                         // changed.
  42
  43                         if($contact['subhub'])
  44                                 $contact['priority'] = 3;
  45
  46                         $t = $contact['last-update'];
  47
  48                         switch ($contact['priority']) {
  49                                 case 5:
  50                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  51                                                 $update = true;
  52                                         break;
  53                                 case 4:
  54                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
  55                                                 $update = true;
  56                                         break;
  57                                 case 3:
  58                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  59                                                 $update = true;
  60                                         break;
  61                                 case 2:
  62                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
  63                                                 $update = true;
  64                                         break;
  65                                 case 1:
  66                                 default:
  67                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
  68                                                 $update = true;
  69                                         break;
  70                         }
  71                         if(! $update)
  72                                 continue;
  73                 }
  74
  75                 $importer_uid = $contact['uid'];
  76
  77                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
  78                         intval($importer_uid)
  79                 );
  80                 if(! count($r))
  81                         continue;
  82
  83                 $importer = $r[0];
  84
  85                 if($debugging)
  86                         echo "IMPORTER: {$importer['name']}\n";
  87
  88                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
  89                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
  90                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
  91                 );
  92
  93                 if($contact['network'] === 'dfrn') {
  94
  95                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
  96
  97                         if(intval($contact['duplex']) && $contact['dfrn-id'])
  98                                 $idtosend = '0:' . $orig_id;
  99                         if(intval($contact['duplex']) && $contact['issued-id'])
 100                                 $idtosend = '1:' . $orig_id;
 101
 102                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 103                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 104                                 . '&type=data&last_update=' . $last_update ;
 105
 106                         $xml = fetch_url($url);
 107
 108                         if($debugging) {
 109                                 echo "URL: " . $url . "\n";
 110                                 echo "XML: " . $xml . "\n";
 111                         }
 112
 113                         if(! $xml) {
 114                                 // dead connection - might be a transient event, or this might
 115                                 // mean the software was uninstalled or the domain expired.
 116                                 // Will keep trying for one month.
 117                                 mark_for_death($contact);
 118                                 continue;
 119                         }
 120
 121
 122                         $res = simplexml_load_string($xml);
 123
 124                         if(intval($res->status) == 1) {
 125                                 // we may not be friends anymore. Will keep trying for one month.
 126                                 mark_for_death($contact);
 127                         }
 128                         else {
 129                                 if($contact['term-date'] != '0000-00-00 00:00:00')
 130                                         unmark_for_death($contact);
 131                         }
 132
 133                         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 134                                 continue;
 135
 136                         $postvars = array();
 137
 138                         $sent_dfrn_id = hex2bin($res->dfrn_id);
 139                         $challenge    = hex2bin($res->challenge);
 140
 141                         $final_dfrn_id = '';
 142
 143                         if(($contact['duplex']) && strlen($contact['prvkey'])) {
 144                                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 145                                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 146                         }
 147                         else {
 148                                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 149                                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 150                         }
 151
 152                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 153
 154                         if(strpos($final_dfrn_id,':') == 1)
 155                                 $final_dfrn_id = substr($final_dfrn_id,2);
 156
 157                         if($final_dfrn_id != $orig_id) {
 158
 159                                 // did not decode properly - cannot trust this site
 160                                 continue;
 161                         }
 162
 163                         $postvars['dfrn_id'] = $idtosend;
 164                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 165
 166                         $xml = post_url($contact['poll'],$postvars);
 167                 }
 168                 else {
 169                         // $contact['network'] !== 'dfrn'
 170
 171                         $xml = fetch_url($contact['poll']);
 172                 }
 173
 174                 if($debugging) {
 175                         echo "XML response:" . $xml . "\n";
 176                         echo "Length:" . strlen($xml) . "\n";
 177                 }
 178
 179                 if(! strlen($xml))
 180                         continue;
 181
 182                 consume_feed($xml,$importer,$contact,$hub);
 183
 184                 if((strlen($hub)) && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly']))) && ($contact['priority'] == 0)) {
 185                         $hubs = explode(',', $hub);
 186                         if(count($hubs)) {
 187                                 foreach($hubs as $h) {
 188                                         $h = trim($h);
 189                                         if(! strlen($h))
 190                                                 continue;
 191                                         subscribe_to_hub($h,$importer,$contact);
 192                                 }
 193                         }
 194                 }
 195
 196
 197                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 198                         dbesc(datetime_convert()),
 199                         intval($contact['id'])
 200                 );
 201
 202                 // loop - next contact
 203         }
 204
 205         killme();
 206
 207
 208