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                         $hub_update = true;
  47                         $update     = false;
  48
  49                         $t = $contact['last-update'];
  50
  51                         // We should be getting everything via a hub. But just to be sure, let's check once a day.
  52                         // (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
  53                         // This also lets us update our subscription to the hub, and add or replace hubs in case it
  54                         // changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'.
  55
  56
  57                         if($contact['subhub']) {
  58                                 $interval = get_config('system','pushpoll_frequency');
  59                                 $contact['priority'] = (($interval !== false) ? intval($interval) : 3);
  60                                 $hub_update = false;
  61
  62                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  63                                                 $hub_update = true;
  64                         }
  65
  66
  67                         /**
  68                          * Based on $contact['priority'], should we poll this site now? Or later?
  69                          */
  70
  71                         switch ($contact['priority']) {
  72                                 case 5:
  73                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  74                                                 $update = true;
  75                                         break;
  76                                 case 4:
  77                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
  78                                                 $update = true;
  79                                         break;
  80                                 case 3:
  81                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  82                                                 $update = true;
  83                                         break;
  84                                 case 2:
  85                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
  86                                                 $update = true;
  87                                         break;
  88                                 case 1:
  89                                 default:
  90                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
  91                                                 $update = true;
  92                                         break;
  93                         }
  94                         if((! $update) && (! $force))
  95                                 continue;
  96                 }
  97
  98                 $importer_uid = $contact['uid'];
  99
 100                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
 101                         intval($importer_uid)
 102                 );
 103                 if(! count($r))
 104                         continue;
 105
 106                 $importer = $r[0];
 107
 108                 logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 109
 110                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
 111                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
 112                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
 113                 );
 114
 115                 if($contact['network'] === 'dfrn') {
 116
 117                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 118
 119                         if(intval($contact['duplex']) && $contact['dfrn-id'])
 120                                 $idtosend = '0:' . $orig_id;
 121                         if(intval($contact['duplex']) && $contact['issued-id'])
 122                                 $idtosend = '1:' . $orig_id;
 123
 124                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 125                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 126                                 . '&type=data&last_update=' . $last_update ;
 127
 128                         $xml = fetch_url($url);
 129
 130                         logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
 131
 132
 133                         if(! $xml) {
 134                                 logger("poller: $url appears to be dead - marking for death ");
 135                                 // dead connection - might be a transient event, or this might
 136                                 // mean the software was uninstalled or the domain expired.
 137                                 // Will keep trying for one month.
 138                                 mark_for_death($contact);
 139
 140                                 // set the last-update so we don't keep polling
 141
 142                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 143                                         dbesc(datetime_convert()),
 144                                         intval($contact['id'])
 145                                 );
 146
 147                                 continue;
 148                         }
 149
 150                         if(! strstr($xml,'<?xml')) {
 151                                 logger('poller: response from ' . $url . ' did not contain XML.');
 152                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 153                                         dbesc(datetime_convert()),
 154                                         intval($contact['id'])
 155                                 );
 156                                 continue;
 157                         }
 158
 159
 160                         $res = simplexml_load_string($xml);
 161
 162                         if(intval($res->status) == 1) {
 163                                 logger("poller: $url replied status 1 - marking for death ");
 164
 165                                 // we may not be friends anymore. Will keep trying for one month.
 166                                 // set the last-update so we don't keep polling
 167
 168                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 169                                         dbesc(datetime_convert()),
 170                                         intval($contact['id'])
 171                                 );
 172
 173                                 mark_for_death($contact);
 174                         }
 175                         else {
 176                                 if($contact['term-date'] != '0000-00-00 00:00:00') {
 177                                         logger("poller: $url back from the dead - removing mark for death");
 178                                         unmark_for_death($contact);
 179                                 }
 180                         }
 181
 182                         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 183                                 continue;
 184
 185                         $postvars = array();
 186
 187                         $sent_dfrn_id = hex2bin($res->dfrn_id);
 188                         $challenge    = hex2bin($res->challenge);
 189
 190                         $final_dfrn_id = '';
 191
 192                         if(($contact['duplex']) && strlen($contact['prvkey'])) {
 193                                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 194                                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 195                         }
 196                         else {
 197                                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 198                                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 199                         }
 200
 201                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 202
 203                         if(strpos($final_dfrn_id,':') == 1)
 204                                 $final_dfrn_id = substr($final_dfrn_id,2);
 205
 206                         if($final_dfrn_id != $orig_id) {
 207
 208                                 // did not decode properly - cannot trust this site
 209                                 continue;
 210                         }
 211
 212                         $postvars['dfrn_id'] = $idtosend;
 213                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 214
 215                         $xml = post_url($contact['poll'],$postvars);
 216                 }
 217                 else {
 218                         // $contact['network'] !== 'dfrn'
 219
 220                         $xml = fetch_url($contact['poll']);
 221                 }
 222
 223                 logger('poller: received xml : ' . $xml, LOGGER_DATA);
 224
 225                 if(! strlen($xml))
 226                         continue;
 227
 228                 consume_feed($xml,$importer,$contact,$hub);
 229
 230                 // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 231
 232                 consume_feed($xml,$importer,$contact,$hub);
 233
 234
 235                 if((strlen($hub)) && ($hub_update)
 236                         && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
 237                         logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 238                         $hubs = explode(',', $hub);
 239                         if(count($hubs)) {
 240                                 foreach($hubs as $h) {
 241                                         $h = trim($h);
 242                                         if(! strlen($h))
 243                                                 continue;
 244                                         subscribe_to_hub($h,$importer,$contact);
 245                                 }
 246                         }
 247                 }
 248
 249
 250                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 251                         dbesc(datetime_convert()),
 252                         intval($contact['id'])
 253                 );
 254
 255                 // loop - next contact
 256         }
 257
 258         killme();
 259
 260
 261