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(), $foo));
  27         proc_run($php_path,"include/queue.php");
  28
  29
  30         $hub_update = false;
  31         $force = false;
  32
  33         if(($argc > 1) && ($argv[1] == 'force'))
  34                 $force = true;
  35
  36         if(($argc > 1) && intval($argv[1])) {
  37                 $manual_id = intval($argv[1]);
  38                 $force = true;
  39         }
  40
  41         $sql_extra = (($manual_id) ? " AND `id` = $manual_id " : "");
  42
  43         // 'stat' clause is a temporary measure until we have federation subscriptions working both directions
  44         $contacts = q("SELECT * FROM `contact`
  45                 WHERE ( ( `network` = 'dfrn' AND ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1)))
  46                 OR ( `network` IN ( 'stat', 'feed' ) AND `poll` != '' ))
  47                 $sql_extra
  48                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()");
  49
  50         if(! count($contacts)){
  51                 killme(); return;
  52         }
  53
  54         foreach($contacts as $contact) {
  55
  56                 if($contact['priority'] || $contact['subhub']) {
  57
  58                         $hub_update = true;
  59                         $update     = false;
  60
  61                         $t = $contact['last-update'];
  62
  63                         // We should be getting everything via a hub. But just to be sure, let's check once a day.
  64                         // (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
  65                         // This also lets us update our subscription to the hub, and add or replace hubs in case it
  66                         // changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'.
  67
  68
  69                         if($contact['subhub']) {
  70                                 $interval = get_config('system','pushpoll_frequency');
  71                                 $contact['priority'] = (($interval !== false) ? intval($interval) : 3);
  72                                 $hub_update = false;
  73
  74                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  75                                                 $hub_update = true;
  76                         }
  77
  78
  79                         /**
  80                          * Based on $contact['priority'], should we poll this site now? Or later?
  81                          */
  82
  83                         switch ($contact['priority']) {
  84                                 case 5:
  85                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  86                                                 $update = true;
  87                                         break;
  88                                 case 4:
  89                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
  90                                                 $update = true;
  91                                         break;
  92                                 case 3:
  93                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
  94                                                 $update = true;
  95                                         break;
  96                                 case 2:
  97                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
  98                                                 $update = true;
  99                                         break;
 100                                 case 1:
 101                                 default:
 102                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
 103                                                 $update = true;
 104                                         break;
 105                         }
 106                         if((! $update) && (! $force))
 107                                 continue;
 108                 }
 109
 110                 $importer_uid = $contact['uid'];
 111
 112                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
 113                         intval($importer_uid)
 114                 );
 115                 if(! count($r))
 116                         continue;
 117
 118                 $importer = $r[0];
 119
 120                 logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 121
 122                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
 123                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
 124                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
 125                 );
 126
 127                 if($contact['network'] === 'dfrn') {
 128
 129                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 130
 131                         if(intval($contact['duplex']) && $contact['dfrn-id'])
 132                                 $idtosend = '0:' . $orig_id;
 133                         if(intval($contact['duplex']) && $contact['issued-id'])
 134                                 $idtosend = '1:' . $orig_id;
 135
 136                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 137                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 138                                 . '&type=data&last_update=' . $last_update ;
 139
 140                         $xml = fetch_url($url);
 141
 142                         logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
 143
 144
 145                         if(! $xml) {
 146                                 logger("poller: $url appears to be dead - marking for death ");
 147                                 // dead connection - might be a transient event, or this might
 148                                 // mean the software was uninstalled or the domain expired.
 149                                 // Will keep trying for one month.
 150                                 mark_for_death($contact);
 151
 152                                 // set the last-update so we don't keep polling
 153
 154                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 155                                         dbesc(datetime_convert()),
 156                                         intval($contact['id'])
 157                                 );
 158
 159                                 continue;
 160                         }
 161
 162                         if(! strstr($xml,'<?xml')) {
 163                                 logger('poller: response from ' . $url . ' did not contain XML.');
 164                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 165                                         dbesc(datetime_convert()),
 166                                         intval($contact['id'])
 167                                 );
 168                                 continue;
 169                         }
 170
 171
 172                         $res = simplexml_load_string($xml);
 173
 174                         if(intval($res->status) == 1) {
 175                                 logger("poller: $url replied status 1 - marking for death ");
 176
 177                                 // we may not be friends anymore. Will keep trying for one month.
 178                                 // set the last-update so we don't keep polling
 179
 180                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 181                                         dbesc(datetime_convert()),
 182                                         intval($contact['id'])
 183                                 );
 184
 185                                 mark_for_death($contact);
 186                         }
 187                         else {
 188                                 if($contact['term-date'] != '0000-00-00 00:00:00') {
 189                                         logger("poller: $url back from the dead - removing mark for death");
 190                                         unmark_for_death($contact);
 191                                 }
 192                         }
 193
 194                         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 195                                 continue;
 196
 197                         $postvars = array();
 198
 199                         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 200                         $challenge    = hex2bin((string) $res->challenge);
 201
 202                         $final_dfrn_id = '';
 203
 204                         if(($contact['duplex']) && strlen($contact['prvkey'])) {
 205                                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 206                                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 207                         }
 208                         else {
 209                                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 210                                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 211                         }
 212
 213                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 214
 215                         if(strpos($final_dfrn_id,':') == 1)
 216                                 $final_dfrn_id = substr($final_dfrn_id,2);
 217
 218                         if($final_dfrn_id != $orig_id) {
 219
 220                                 // did not decode properly - cannot trust this site
 221                                 continue;
 222                         }
 223
 224                         $postvars['dfrn_id'] = $idtosend;
 225                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 226
 227                         $xml = post_url($contact['poll'],$postvars);
 228                 }
 229                 else {
 230                         // $contact['network'] !== 'dfrn'
 231
 232                         $xml = fetch_url($contact['poll']);
 233                 }
 234
 235                 logger('poller: received xml : ' . $xml, LOGGER_DATA);
 236
 237                 if(! strlen($xml))
 238                         continue;
 239
 240                 consume_feed($xml,$importer,$contact,$hub,1);
 241
 242                 // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 243
 244                 consume_feed($xml,$importer,$contact,$hub,1);
 245
 246
 247                 if((strlen($hub)) && ($hub_update)
 248                         && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
 249                         logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 250                         $hubs = explode(',', $hub);
 251                         if(count($hubs)) {
 252                                 foreach($hubs as $h) {
 253                                         $h = trim($h);
 254                                         if(! strlen($h))
 255                                                 continue;
 256                                         subscribe_to_hub($h,$importer,$contact);
 257                                 }
 258                         }
 259                 }
 260
 261
 262                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 263                         dbesc(datetime_convert()),
 264                         intval($contact['id'])
 265                 );
 266
 267                 // loop - next contact
 268         }
 269
 270         killme();
 271
 272
 273