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