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                 $force = true;
  34
  35         if(($argc > 1) && intval($argv[1])) {
  36                 $manual_id = intval($argv[1]);
  37                 $force = true;
  38         }
  39
  40         $sql_extra = (($manual_id) ? " AND `id` = $manual_id " : "");
  41
  42         // 'stat' clause is a temporary measure until we have federation subscriptions working both directions
  43         $contacts = q("SELECT * FROM `contact`
  44                 WHERE ( ( `network` = 'dfrn' AND ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1)))
  45                 OR ( `network` IN ( 'stat', 'feed' ) AND `poll` != '' ))
  46                 $sql_extra
  47                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()");
  48
  49         if(! count($contacts))
  50                 killme();
  51
  52         foreach($contacts as $contact) {
  53
  54                 if($contact['priority'] || $contact['subhub']) {
  55
  56                         $hub_update = true;
  57                         $update     = false;
  58
  59                         $t = $contact['last-update'];
  60
  61                         // We should be getting everything via a hub. But just to be sure, let's check once a day.
  62                         // (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
  63                         // This also lets us update our subscription to the hub, and add or replace hubs in case it
  64                         // changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'.
  65
  66
  67                         if($contact['subhub']) {
  68                                 $interval = get_config('system','pushpoll_frequency');
  69                                 $contact['priority'] = (($interval !== false) ? intval($interval) : 3);
  70                                 $hub_update = false;
  71
  72                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  73                                                 $hub_update = true;
  74                         }
  75
  76
  77                         /**
  78                          * Based on $contact['priority'], should we poll this site now? Or later?
  79                          */
  80
  81                         switch ($contact['priority']) {
  82                                 case 5:
  83                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  84                                                 $update = true;
  85                                         break;
  86                                 case 4:
  87                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
  88                                                 $update = true;
  89                                         break;
  90                                 case 3:
  91                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  92                                                 $update = true;
  93                                         break;
  94                                 case 2:
  95                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
  96                                                 $update = true;
  97                                         break;
  98                                 case 1:
  99                                 default:
 100                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
 101                                                 $update = true;
 102                                         break;
 103                         }
 104                         if((! $update) && (! $force))
 105                                 continue;
 106                 }
 107
 108                 $importer_uid = $contact['uid'];
 109
 110                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
 111                         intval($importer_uid)
 112                 );
 113                 if(! count($r))
 114                         continue;
 115
 116                 $importer = $r[0];
 117
 118                 logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 119
 120                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
 121                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
 122                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
 123                 );
 124
 125                 if($contact['network'] === 'dfrn') {
 126
 127                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 128
 129                         if(intval($contact['duplex']) && $contact['dfrn-id'])
 130                                 $idtosend = '0:' . $orig_id;
 131                         if(intval($contact['duplex']) && $contact['issued-id'])
 132                                 $idtosend = '1:' . $orig_id;
 133
 134                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 135                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 136                                 . '&type=data&last_update=' . $last_update ;
 137
 138                         $xml = fetch_url($url);
 139
 140                         logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
 141
 142
 143                         if(! $xml) {
 144                                 logger("poller: $url appears to be dead - marking for death ");
 145                                 // dead connection - might be a transient event, or this might
 146                                 // mean the software was uninstalled or the domain expired.
 147                                 // Will keep trying for one month.
 148                                 mark_for_death($contact);
 149
 150                                 // set the last-update so we don't keep polling
 151
 152                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 153                                         dbesc(datetime_convert()),
 154                                         intval($contact['id'])
 155                                 );
 156
 157                                 continue;
 158                         }
 159
 160                         if(! strstr($xml,'<?xml')) {
 161                                 logger('poller: response from ' . $url . ' did not contain XML.');
 162                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 163                                         dbesc(datetime_convert()),
 164                                         intval($contact['id'])
 165                                 );
 166                                 continue;
 167                         }
 168
 169
 170                         $res = simplexml_load_string($xml);
 171
 172                         if(intval($res->status) == 1) {
 173                                 logger("poller: $url replied status 1 - marking for death ");
 174
 175                                 // we may not be friends anymore. Will keep trying for one month.
 176                                 // set the last-update so we don't keep polling
 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                                 mark_for_death($contact);
 184                         }
 185                         else {
 186                                 if($contact['term-date'] != '0000-00-00 00:00:00') {
 187                                         logger("poller: $url back from the dead - removing mark for death");
 188                                         unmark_for_death($contact);
 189                                 }
 190                         }
 191
 192                         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 193                                 continue;
 194
 195                         $postvars = array();
 196
 197                         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 198                         $challenge    = hex2bin((string) $res->challenge);
 199
 200                         $final_dfrn_id = '';
 201
 202                         if(($contact['duplex']) && strlen($contact['prvkey'])) {
 203                                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 204                                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 205                         }
 206                         else {
 207                                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 208                                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 209                         }
 210
 211                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 212
 213                         if(strpos($final_dfrn_id,':') == 1)
 214                                 $final_dfrn_id = substr($final_dfrn_id,2);
 215
 216                         if($final_dfrn_id != $orig_id) {
 217
 218                                 // did not decode properly - cannot trust this site
 219                                 continue;
 220                         }
 221
 222                         $postvars['dfrn_id'] = $idtosend;
 223                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 224
 225                         $xml = post_url($contact['poll'],$postvars);
 226                 }
 227                 else {
 228                         // $contact['network'] !== 'dfrn'
 229
 230                         $xml = fetch_url($contact['poll']);
 231                 }
 232
 233                 logger('poller: received xml : ' . $xml, LOGGER_DATA);
 234
 235                 if(! strlen($xml))
 236                         continue;
 237
 238                 consume_feed($xml,$importer,$contact,$hub,1);
 239
 240                 // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 241
 242                 consume_feed($xml,$importer,$contact,$hub,1);
 243
 244
 245                 if((strlen($hub)) && ($hub_update)
 246                         && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
 247                         logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 248                         $hubs = explode(',', $hub);
 249                         if(count($hubs)) {
 250                                 foreach($hubs as $h) {
 251                                         $h = trim($h);
 252                                         if(! strlen($h))
 253                                                 continue;
 254                                         subscribe_to_hub($h,$importer,$contact);
 255                                 }
 256                         }
 257                 }
 258
 259
 260                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 261                         dbesc(datetime_convert()),
 262                         intval($contact['id'])
 263                 );
 264
 265                 // loop - next contact
 266         }
 267
 268         killme();
 269
 270
 271