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         require_once('include/Contact.php');
  18
  19         $a->set_baseurl(get_config('system','url'));
  20
  21         logger('poller: start');
  22
  23         // run queue delivery process in the background
  24
  25         $php_path = ((x($a->config,'php_path') && strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
  26         proc_close(proc_open("\"$php_path\" \"include/queue.php\" &", array(), $foo));
  27
  28
  29         $force = false;
  30         if(($argc > 1) && ($argv[1] == 'force'))
  31                 $force = true;
  32
  33         // 'stat' clause is a temporary measure until we have federation subscriptions working both directions
  34         $contacts = q("SELECT * FROM `contact`
  35                 WHERE ( ( `network` = 'dfrn' AND ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1)))
  36                 OR ( `network` = 'stat' AND `poll` != '' ) )
  37                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()");
  38
  39         if(! count($contacts))
  40                 killme();
  41
  42         foreach($contacts as $contact) {
  43
  44                 if($contact['priority'] || $contact['subhub']) {
  45
  46                         $update = false;
  47
  48                         // We should be getting everything via a hub. But just to be sure, let's check once a day.
  49                         // This also lets us update our subscription to the hub, and add or replace hubs in case it
  50                         // changed.
  51
  52                         if($contact['subhub'])
  53                                 $contact['priority'] = 3;
  54
  55                         $t = $contact['last-update'];
  56
  57                         switch ($contact['priority']) {
  58                                 case 5:
  59                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  60                                                 $update = true;
  61                                         break;
  62                                 case 4:
  63                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
  64                                                 $update = true;
  65                                         break;
  66                                 case 3:
  67                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  68                                                 $update = true;
  69                                         break;
  70                                 case 2:
  71                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
  72                                                 $update = true;
  73                                         break;
  74                                 case 1:
  75                                 default:
  76                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
  77                                                 $update = true;
  78                                         break;
  79                         }
  80                         if((! $update) && (! $force))
  81                                 continue;
  82                 }
  83
  84                 $importer_uid = $contact['uid'];
  85
  86                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
  87                         intval($importer_uid)
  88                 );
  89                 if(! count($r))
  90                         continue;
  91
  92                 $importer = $r[0];
  93
  94                 logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
  95
  96                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
  97                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
  98                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
  99                 );
 100
 101                 if($contact['network'] === 'dfrn') {
 102
 103                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 104
 105                         if(intval($contact['duplex']) && $contact['dfrn-id'])
 106                                 $idtosend = '0:' . $orig_id;
 107                         if(intval($contact['duplex']) && $contact['issued-id'])
 108                                 $idtosend = '1:' . $orig_id;
 109
 110                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 111                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 112                                 . '&type=data&last_update=' . $last_update ;
 113
 114                         $xml = fetch_url($url);
 115
 116                         logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
 117
 118                         if(! $xml) {
 119                                 logger("poller: $url appears to be dead - marking for death ");
 120                                 // dead connection - might be a transient event, or this might
 121                                 // mean the software was uninstalled or the domain expired.
 122                                 // Will keep trying for one month.
 123                                 mark_for_death($contact);
 124
 125                                 // set the last-update so we don't keep polling
 126
 127                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 128                                         dbesc(datetime_convert()),
 129                                         intval($contact['id'])
 130                                 );
 131
 132                                 continue;
 133                         }
 134
 135
 136                         $res = simplexml_load_string($xml);
 137
 138                         if(intval($res->status) == 1) {
 139                                 logger("poller: $url replied status 1 - marking for death ");
 140
 141                                 // we may not be friends anymore. Will keep trying for one month.
 142                                 // set the last-update so we don't keep polling
 143
 144                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 145                                         dbesc(datetime_convert()),
 146                                         intval($contact['id'])
 147                                 );
 148
 149                                 mark_for_death($contact);
 150                         }
 151                         else {
 152                                 if($contact['term-date'] != '0000-00-00 00:00:00') {
 153                                         logger("poller: $url back from the dead - removing mark for death");
 154                                         unmark_for_death($contact);
 155                                 }
 156                         }
 157
 158                         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 159                                 continue;
 160
 161                         $postvars = array();
 162
 163                         $sent_dfrn_id = hex2bin($res->dfrn_id);
 164                         $challenge    = hex2bin($res->challenge);
 165
 166                         $final_dfrn_id = '';
 167
 168                         if(($contact['duplex']) && strlen($contact['prvkey'])) {
 169                                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 170                                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 171                         }
 172                         else {
 173                                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 174                                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 175                         }
 176
 177                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 178
 179                         if(strpos($final_dfrn_id,':') == 1)
 180                                 $final_dfrn_id = substr($final_dfrn_id,2);
 181
 182                         if($final_dfrn_id != $orig_id) {
 183
 184                                 // did not decode properly - cannot trust this site
 185                                 continue;
 186                         }
 187
 188                         $postvars['dfrn_id'] = $idtosend;
 189                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 190
 191                         $xml = post_url($contact['poll'],$postvars);
 192                 }
 193                 else {
 194                         // $contact['network'] !== 'dfrn'
 195
 196                         $xml = fetch_url($contact['poll']);
 197                 }
 198
 199                 logger('poller: received xml : ' . $xml, LOGGER_DATA);
 200
 201                 if(! strlen($xml))
 202                         continue;
 203
 204                 consume_feed($xml,$importer,$contact,$hub);
 205
 206                 // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 207
 208                 consume_feed($xml,$importer,$contact,$hub);
 209
 210
 211                 if((strlen($hub)) && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
 212                         logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 213                         $hubs = explode(',', $hub);
 214                         if(count($hubs)) {
 215                                 foreach($hubs as $h) {
 216                                         $h = trim($h);
 217                                         if(! strlen($h))
 218                                                 continue;
 219                                         subscribe_to_hub($h,$importer,$contact);
 220                                 }
 221                         }
 222                 }
 223
 224
 225                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 226                         dbesc(datetime_convert()),
 227                         intval($contact['id'])
 228                 );
 229
 230                 // loop - next contact
 231         }
 232
 233         killme();
 234
 235
 236