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         $hub_update = false;
  30         $force = false;
  31
  32         if(($argc > 1) && ($argv[1] == 'force'))
  33                 $force = true;
  34
  35         // 'stat' clause is a temporary measure until we have federation subscriptions working both directions
  36         $contacts = q("SELECT * FROM `contact`
  37                 WHERE ( ( `network` = 'dfrn' AND ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1)))
  38                 OR ( `network` = 'stat' AND `poll` != '' ) )
  39                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()");
  40
  41         if(! count($contacts))
  42                 killme();
  43
  44         foreach($contacts as $contact) {
  45
  46                 if($contact['priority'] || $contact['subhub']) {
  47
  48                         $hub_update = true;
  49                         $update     = false;
  50
  51                         $t = $contact['last-update'];
  52
  53                         // We should be getting everything via a hub. But just to be sure, let's check once a day.
  54                         // (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
  55                         // This also lets us update our subscription to the hub, and add or replace hubs in case it
  56                         // changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'.
  57
  58
  59                         if($contact['subhub']) {
  60                                 $interval = get_config('system','pushpoll_frequency');
  61                                 $contact['priority'] = (($interval !== false) ? intval($interval) : 3);
  62                                 $hub_update = false;
  63
  64                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  65                                                 $hub_update = true;
  66                         }
  67
  68
  69                         /**
  70                          * Based on $contact['priority'], should we poll this site now? Or later?
  71                          */
  72
  73                         switch ($contact['priority']) {
  74                                 case 5:
  75                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  76                                                 $update = true;
  77                                         break;
  78                                 case 4:
  79                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
  80                                                 $update = true;
  81                                         break;
  82                                 case 3:
  83                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  84                                                 $update = true;
  85                                         break;
  86                                 case 2:
  87                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
  88                                                 $update = true;
  89                                         break;
  90                                 case 1:
  91                                 default:
  92                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
  93                                                 $update = true;
  94                                         break;
  95                         }
  96                         if((! $update) && (! $force))
  97                                 continue;
  98                 }
  99
 100                 $importer_uid = $contact['uid'];
 101
 102                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
 103                         intval($importer_uid)
 104                 );
 105                 if(! count($r))
 106                         continue;
 107
 108                 $importer = $r[0];
 109
 110                 logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 111
 112                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
 113                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
 114                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
 115                 );
 116
 117                 if($contact['network'] === 'dfrn') {
 118
 119                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 120
 121                         if(intval($contact['duplex']) && $contact['dfrn-id'])
 122                                 $idtosend = '0:' . $orig_id;
 123                         if(intval($contact['duplex']) && $contact['issued-id'])
 124                                 $idtosend = '1:' . $orig_id;
 125
 126                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 127                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 128                                 . '&type=data&last_update=' . $last_update ;
 129
 130                         $xml = fetch_url($url);
 131
 132                         logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
 133
 134
 135                         if(! $xml) {
 136                                 logger("poller: $url appears to be dead - marking for death ");
 137                                 // dead connection - might be a transient event, or this might
 138                                 // mean the software was uninstalled or the domain expired.
 139                                 // Will keep trying for one month.
 140                                 mark_for_death($contact);
 141
 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                                 continue;
 150                         }
 151
 152                         if(! strstr($xml,'<?xml')) {
 153                                 logger('poller: response from ' . $url . ' did not contain XML.');
 154                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 155                                         dbesc(datetime_convert()),
 156                                         intval($contact['id'])
 157                                 );
 158                                 continue;
 159                         }
 160
 161
 162                         $res = simplexml_load_string($xml);
 163
 164                         if(intval($res->status) == 1) {
 165                                 logger("poller: $url replied status 1 - marking for death ");
 166
 167                                 // we may not be friends anymore. Will keep trying for one month.
 168                                 // set the last-update so we don't keep polling
 169
 170                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 171                                         dbesc(datetime_convert()),
 172                                         intval($contact['id'])
 173                                 );
 174
 175                                 mark_for_death($contact);
 176                         }
 177                         else {
 178                                 if($contact['term-date'] != '0000-00-00 00:00:00') {
 179                                         logger("poller: $url back from the dead - removing mark for death");
 180                                         unmark_for_death($contact);
 181                                 }
 182                         }
 183
 184                         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 185                                 continue;
 186
 187                         $postvars = array();
 188
 189                         $sent_dfrn_id = hex2bin($res->dfrn_id);
 190                         $challenge    = hex2bin($res->challenge);
 191
 192                         $final_dfrn_id = '';
 193
 194                         if(($contact['duplex']) && strlen($contact['prvkey'])) {
 195                                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 196                                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 197                         }
 198                         else {
 199                                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 200                                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 201                         }
 202
 203                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 204
 205                         if(strpos($final_dfrn_id,':') == 1)
 206                                 $final_dfrn_id = substr($final_dfrn_id,2);
 207
 208                         if($final_dfrn_id != $orig_id) {
 209
 210                                 // did not decode properly - cannot trust this site
 211                                 continue;
 212                         }
 213
 214                         $postvars['dfrn_id'] = $idtosend;
 215                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 216
 217                         $xml = post_url($contact['poll'],$postvars);
 218                 }
 219                 else {
 220                         // $contact['network'] !== 'dfrn'
 221
 222                         $xml = fetch_url($contact['poll']);
 223                 }
 224
 225                 logger('poller: received xml : ' . $xml, LOGGER_DATA);
 226
 227                 if(! strlen($xml))
 228                         continue;
 229
 230                 consume_feed($xml,$importer,$contact,$hub,1);
 231
 232                 // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 233
 234                 consume_feed($xml,$importer,$contact,$hub,1);
 235
 236
 237                 if((strlen($hub)) && ($hub_update)
 238                         && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
 239                         logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 240                         $hubs = explode(',', $hub);
 241                         if(count($hubs)) {
 242                                 foreach($hubs as $h) {
 243                                         $h = trim($h);
 244                                         if(! strlen($h))
 245                                                 continue;
 246                                         subscribe_to_hub($h,$importer,$contact);
 247                                 }
 248                         }
 249                 }
 250
 251
 252                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 253                         dbesc(datetime_convert()),
 254                         intval($contact['id'])
 255                 );
 256
 257                 // loop - next contact
 258         }
 259
 260         killme();
 261
 262
 263