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         $contacts = q("SELECT * FROM `contact`
  25                 WHERE ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1))
  26                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()");
  27
  28         if(! count($contacts))
  29                 killme();
  30
  31         foreach($contacts as $contact) {
  32
  33                 if($contact['priority'] || $contact['subhub']) {
  34
  35                         $update = false;
  36                         $t = $contact['last-update'];
  37
  38                         switch ($contact['priority']) {
  39                                 case 5:
  40                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  41                                                 $update = true;
  42                                         break;
  43                                 case 4:
  44                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
  45                                                 $update = true;
  46                                         break;
  47                                 case 3:
  48                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  49                                                 $update = true;
  50                                         break;
  51                                 case 2:
  52                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
  53                                                 $update = true;
  54                                         break;
  55                                 case 1:
  56                                 default:
  57
  58                                                         // if pubsub delivery is in effect, poll no more than once every hour.
  59                                                         // We shouldn't need to poll at all with pubsub, but the hub isn't
  60                                                         // always the most reliable postmaster... This way we still get the
  61                                                         // messages when the hub goes flaky, just perhaps a bit slower.
  62                                                         // At least it doesn't hurt to get them twice.
  63
  64                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
  65                                                 $update = true;
  66                                         break;
  67                         }
  68                         if(! $update)
  69                                 continue;
  70                 }
  71
  72                 $importer_uid = $contact['uid'];
  73
  74                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
  75                         intval($importer_uid)
  76                 );
  77                 if(! count($r))
  78                         continue;
  79
  80                 $importer = $r[0];
  81
  82                 if($debugging)
  83                         echo "IMPORTER: {$importer['name']}\n";
  84
  85                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
  86                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
  87                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
  88                 );
  89
  90                 $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
  91
  92                 if(intval($contact['duplex']) && $contact['dfrn-id'])
  93                         $idtosend = '0:' . $orig_id;
  94                 if(intval($contact['duplex']) && $contact['issued-id'])
  95                         $idtosend = '1:' . $orig_id;
  96
  97                 $url = $contact['poll'] . '?dfrn_id=' . $idtosend . '&type=data&last_update=' . $last_update ;
  98                 $xml = fetch_url($url);
  99
 100                 if($debugging) {
 101                         echo "URL: " . $url . "\r\n";
 102                         echo "XML: " . $xml . "\r\n";
 103                 }
 104
 105                 if(! $xml) {
 106                         // dead connection - might be a transient event, or this might
 107                         // mean the software was uninstalled or the domain expired.
 108                         // Will keep trying for one month.
 109                         mark_for_death($contact);
 110                         continue;
 111                 }
 112
 113
 114                 $res = simplexml_load_string($xml);
 115
 116                 if(intval($res->status) == 1) {
 117                         // we may not be friends anymore. Will keep trying for one month.
 118                         mark_for_death($contact);
 119                 }
 120                 else {
 121                         if($contact['term-date'] != '0000-00-00 00:00:00')
 122                                 unmark_for_death($contact);
 123                 }
 124
 125                 if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 126                         continue;
 127
 128                 $postvars = array();
 129
 130                 $sent_dfrn_id = hex2bin($res->dfrn_id);
 131                 $challenge    = hex2bin($res->challenge);
 132
 133                 $final_dfrn_id = '';
 134
 135                 if(($contact['duplex']) && strlen($contact['prvkey'])) {
 136                         openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 137                         openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 138
 139                 }
 140                 else {
 141                         openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 142                         openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 143                 }
 144
 145                 $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 146
 147                 if(strpos($final_dfrn_id,':') == 1)
 148                         $final_dfrn_id = substr($final_dfrn_id,2);
 149
 150                 if($final_dfrn_id != $orig_id) {
 151
 152                         // did not decode properly - cannot trust this site
 153                         continue;
 154                 }
 155
 156                 $postvars['dfrn_id'] = $idtosend;
 157
 158
 159                 $xml = post_url($contact['poll'],$postvars);
 160
 161                 if($debugging) {
 162                         echo "XML response:" . $xml . "\n";
 163                         echo "Length:" . strlen($xml) . "\n";
 164                 }
 165
 166                 if(! strlen($xml))
 167                         continue;
 168
 169
 170                 consume_feed($xml,$importer,$contact,$hub);
 171
 172
 173                 if((strlen($hub)) && ($contact['rel'] == REL_BUD) && ($contact['priority'] == 0)) {
 174                         subscribe_to_hub($hub,$importer,$contact);
 175                 }
 176
 177
 178                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 179                         dbesc(datetime_convert()),
 180                         intval($contact['id'])
 181                 );
 182
 183         }
 184
 185         killme();
 186
 187
 188