include/poller.php

   1 <?php
   2 require_once("boot.php");
   3
   4 function poller_run($argv, $argc){
   5   global $a, $db;
   6
   7   if(is_null($a)){
   8     $a = new App;
   9   }
  10
  11   if(is_null($db)){
  12     @include(".htconfig.php");
  13     require_once("dba.php");
  14     $db = new dba($db_host, $db_user, $db_pass, $db_data);
  15     unset($db_host, $db_user, $db_pass, $db_data);
  16   };
  17
  18         require_once('session.php');
  19         require_once('datetime.php');
  20         require_once('simplepie/simplepie.inc');
  21         require_once('include/items.php');
  22         require_once('include/Contact.php');
  23
  24         $a->set_baseurl(get_config('system','url'));
  25
  26         logger('poller: start');
  27
  28         // run queue delivery process in the background
  29
  30         proc_run('php',"include/queue.php");
  31
  32         // clear old cache
  33         q("DELETE FROM `cache` WHERE `updated`<'%s'",
  34                 dbesc(datetime_convert('UTC','UTC',"now - 30 days")));
  35
  36         $manual_id  = 0;
  37         $hub_update = false;
  38         $force      = false;
  39
  40         if(($argc > 1) && ($argv[1] == 'force'))
  41                 $force = true;
  42
  43         if(($argc > 1) && intval($argv[1])) {
  44                 $manual_id = intval($argv[1]);
  45                 $force     = true;
  46         }
  47
  48         $sql_extra = (($manual_id) ? " AND `id` = $manual_id " : "");
  49
  50         // 'stat' clause is a temporary measure until we have federation subscriptions working both directions
  51         $contacts = q("SELECT * FROM `contact`
  52                 WHERE ( ( `network` = 'dfrn' AND ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1)))
  53                 OR ( `network` IN ( 'stat', 'feed' ) AND `poll` != '' ))
  54                 $sql_extra
  55                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()");
  56
  57         if(! count($contacts)){
  58                 return;
  59         }
  60
  61         foreach($contacts as $contact) {
  62
  63                 if($manual_id)
  64                         $contact['last-update'] = '0000-00-00 00:00:00';
  65
  66                 if($contact['priority'] || $contact['subhub']) {
  67
  68                         $hub_update = true;
  69                         $update     = false;
  70
  71                         $t = $contact['last-update'];
  72
  73                         // We should be getting everything via a hub. But just to be sure, let's check once a day.
  74                         // (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
  75                         // This also lets us update our subscription to the hub, and add or replace hubs in case it
  76                         // changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'.
  77
  78
  79                         if($contact['subhub']) {
  80                                 $interval = get_config('system','pushpoll_frequency');
  81                                 $contact['priority'] = (($interval !== false) ? intval($interval) : 3);
  82                                 $hub_update = false;
  83
  84                                 if((datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day")) || $force)
  85                                                 $hub_update = true;
  86                         }
  87
  88
  89                         /**
  90                          * Based on $contact['priority'], should we poll this site now? Or later?
  91                          */
  92
  93                         switch ($contact['priority']) {
  94                                 case 5:
  95                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
  96                                                 $update = true;
  97                                         break;
  98                                 case 4:
  99                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
 100                                                 $update = true;
 101                                         break;
 102                                 case 3:
 103                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
 104                                                 $update = true;
 105                                         break;
 106                                 case 2:
 107                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
 108                                                 $update = true;
 109                                         break;
 110                                 case 1:
 111                                 default:
 112                                         if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
 113                                                 $update = true;
 114                                         break;
 115                         }
 116                         if((! $update) && (! $force))
 117                                 continue;
 118                 }
 119
 120                 $importer_uid = $contact['uid'];
 121
 122                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
 123                         intval($importer_uid)
 124                 );
 125                 if(! count($r))
 126                         continue;
 127
 128                 $importer = $r[0];
 129
 130                 logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 131
 132                 $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
 133                         ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
 134                         : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
 135                 );
 136
 137                 if($contact['network'] === 'dfrn') {
 138
 139                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 140
 141                         if(intval($contact['duplex']) && $contact['dfrn-id'])
 142                                 $idtosend = '0:' . $orig_id;
 143                         if(intval($contact['duplex']) && $contact['issued-id'])
 144                                 $idtosend = '1:' . $orig_id;
 145
 146                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 147                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 148                                 . '&type=data&last_update=' . $last_update ;
 149
 150                         $xml = fetch_url($url);
 151
 152                         logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
 153
 154
 155                         if(! $xml) {
 156                                 logger("poller: $url appears to be dead - marking for death ");
 157                                 // dead connection - might be a transient event, or this might
 158                                 // mean the software was uninstalled or the domain expired.
 159                                 // Will keep trying for one month.
 160                                 mark_for_death($contact);
 161
 162                                 // set the last-update so we don't keep polling
 163
 164                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 165                                         dbesc(datetime_convert()),
 166                                         intval($contact['id'])
 167                                 );
 168
 169                                 continue;
 170                         }
 171
 172                         if(! strstr($xml,'<?xml')) {
 173                                 logger('poller: response from ' . $url . ' did not contain XML.');
 174                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 175                                         dbesc(datetime_convert()),
 176                                         intval($contact['id'])
 177                                 );
 178                                 continue;
 179                         }
 180
 181
 182                         $res = simplexml_load_string($xml);
 183
 184                         if(intval($res->status) == 1) {
 185                                 logger("poller: $url replied status 1 - marking for death ");
 186
 187                                 // we may not be friends anymore. Will keep trying for one month.
 188                                 // set the last-update so we don't keep polling
 189
 190                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 191                                         dbesc(datetime_convert()),
 192                                         intval($contact['id'])
 193                                 );
 194
 195                                 mark_for_death($contact);
 196                         }
 197                         else {
 198                                 if($contact['term-date'] != '0000-00-00 00:00:00') {
 199                                         logger("poller: $url back from the dead - removing mark for death");
 200                                         unmark_for_death($contact);
 201                                 }
 202                         }
 203
 204                         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 205                                 continue;
 206
 207                         $postvars = array();
 208
 209                         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 210                         $challenge    = hex2bin((string) $res->challenge);
 211
 212                         $final_dfrn_id = '';
 213
 214                         if(($contact['duplex']) && strlen($contact['prvkey'])) {
 215                                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 216                                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 217                         }
 218                         else {
 219                                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 220                                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 221                         }
 222
 223                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 224
 225                         if(strpos($final_dfrn_id,':') == 1)
 226                                 $final_dfrn_id = substr($final_dfrn_id,2);
 227
 228                         if($final_dfrn_id != $orig_id) {
 229
 230                                 // did not decode properly - cannot trust this site
 231                                 continue;
 232                         }
 233
 234                         $postvars['dfrn_id'] = $idtosend;
 235                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 236
 237                         $xml = post_url($contact['poll'],$postvars);
 238                 }
 239                 else {
 240
 241                         // $contact['network'] !== 'dfrn'
 242
 243                         $xml = fetch_url($contact['poll']);
 244                 }
 245
 246                 logger('poller: received xml : ' . $xml, LOGGER_DATA);
 247
 248                 if(! strstr($xml,'<?xml')) {
 249                         logger('poller: post_handshake: response from ' . $url . ' did not contain XML.');
 250                         $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 251                                 dbesc(datetime_convert()),
 252                                 intval($contact['id'])
 253                         );
 254                         continue;
 255                 }
 256
 257                 consume_feed($xml,$importer,$contact,$hub,1);
 258
 259                 // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 260
 261                 consume_feed($xml,$importer,$contact,$hub,1);
 262
 263
 264                 if((strlen($hub)) && ($hub_update)
 265                         && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
 266                         logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 267                         $hubs = explode(',', $hub);
 268                         if(count($hubs)) {
 269                                 foreach($hubs as $h) {
 270                                         $h = trim($h);
 271                                         if(! strlen($h))
 272                                                 continue;
 273                                         subscribe_to_hub($h,$importer,$contact);
 274                                 }
 275                         }
 276                 }
 277
 278
 279                 $updated = datetime_convert();
 280
 281                 $r = q("UPDATE `contact` SET `last-update` = '%s', `success_update` = '%s' WHERE `id` = %d LIMIT 1",
 282                         dbesc($updated),
 283                         dbesc($updated),
 284                         intval($contact['id'])
 285                 );
 286
 287                 // loop - next contact
 288         }
 289
 290         return;
 291 }
 292
 293 if (array_search(__file__,get_included_files())===0){
 294   poller_run($argv,$argc);
 295   killme();
 296 }