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         $contacts = q("SELECT `id` FROM `contact`
  51                 WHERE ( `rel` = %d OR `rel` = %d ) AND `poll` != ''
  52                 $sql_extra
  53                 AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()",
  54                 intval(REL_FAN),
  55                 intval(REL_BUD)
  56         );
  57
  58         if(! count($contacts)) {
  59                 return;
  60         }
  61
  62         foreach($contacts as $c) {
  63
  64                 $res = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
  65                         intval($c['id'])
  66                 );
  67
  68                 if(! count($res))
  69                         continue;
  70
  71                 foreach($res as $contact) {
  72                         if($manual_id)
  73                                 $contact['last-update'] = '0000-00-00 00:00:00';
  74
  75                         if($contact['priority'] || $contact['subhub']) {
  76
  77                                 $hub_update = true;
  78                                 $update     = false;
  79
  80                                 $t = $contact['last-update'];
  81
  82                                 // We should be getting everything via a hub. But just to be sure, let's check once a day.
  83                                 // (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
  84                                 // This also lets us update our subscription to the hub, and add or replace hubs in case it
  85                                 // changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'.
  86
  87
  88                                 if($contact['subhub']) {
  89                                         $interval = get_config('system','pushpoll_frequency');
  90                                         $contact['priority'] = (($interval !== false) ? intval($interval) : 3);
  91                                         $hub_update = false;
  92
  93                                         if((datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day")) || $force)
  94                                                         $hub_update = true;
  95                                 }
  96
  97                                 /**
  98                                  * Based on $contact['priority'], should we poll this site now? Or later?
  99                                  */
 100
 101                                 switch ($contact['priority']) {
 102                                         case 5:
 103                                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
 104                                                         $update = true;
 105                                                 break;
 106                                         case 4:
 107                                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
 108                                                         $update = true;
 109                                                 break;
 110                                         case 3:
 111                                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
 112                                                         $update = true;
 113                                                 break;
 114                                         case 2:
 115                                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
 116                                                         $update = true;
 117                                                 break;
 118                                         case 1:
 119                                         default:
 120                                                 if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
 121                                                         $update = true;
 122                                                 break;
 123                                 }
 124                                 if((! $update) && (! $force))
 125                                         continue;
 126                         }
 127
 128                         $importer_uid = $contact['uid'];
 129
 130                         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
 131                                 intval($importer_uid)
 132                         );
 133                         if(! count($r))
 134                                 continue;
 135
 136                         $importer = $r[0];
 137
 138                         logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 139
 140                         $last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
 141                                 ? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
 142                                 : datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
 143                         );
 144
 145                         if($contact['network'] === 'dfrn') {
 146
 147                                 $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 148
 149                                 if(intval($contact['duplex']) && $contact['dfrn-id'])
 150                                         $idtosend = '0:' . $orig_id;
 151                                 if(intval($contact['duplex']) && $contact['issued-id'])
 152                                         $idtosend = '1:' . $orig_id;
 153
 154                                 $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 155                                         . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 156                                         . '&type=data&last_update=' . $last_update ;
 157
 158                                 $xml = fetch_url($url);
 159
 160                                 logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
 161
 162
 163                                 if(! $xml) {
 164                                         logger("poller: $url appears to be dead - marking for death ");
 165                                         // dead connection - might be a transient event, or this might
 166                                         // mean the software was uninstalled or the domain expired.
 167                                         // Will keep trying for one month.
 168                                         mark_for_death($contact);
 169
 170                                         // set the last-update so we don't keep polling
 171
 172                                         $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 173                                                 dbesc(datetime_convert()),
 174                                                 intval($contact['id'])
 175                                         );
 176
 177                                         continue;
 178                                 }
 179
 180                                 if(! strstr($xml,'<?xml')) {
 181                                         logger('poller: response from ' . $url . ' did not contain XML.');
 182                                         $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 183                                                 dbesc(datetime_convert()),
 184                                                 intval($contact['id'])
 185                                         );
 186                                         continue;
 187                                 }
 188
 189
 190                                 $res = simplexml_load_string($xml);
 191
 192                                 if(intval($res->status) == 1) {
 193                                         logger("poller: $url replied status 1 - marking for death ");
 194
 195                                         // we may not be friends anymore. Will keep trying for one month.
 196                                         // set the last-update so we don't keep polling
 197
 198                                         $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 199                                                 dbesc(datetime_convert()),
 200                                                 intval($contact['id'])
 201                                         );
 202
 203                                         mark_for_death($contact);
 204                                 }
 205                                 else {
 206                                         if($contact['term-date'] != '0000-00-00 00:00:00') {
 207                                                 logger("poller: $url back from the dead - removing mark for death");
 208                                                 unmark_for_death($contact);
 209                                         }
 210                                 }
 211
 212                                 if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 213                                         continue;
 214
 215                                 $postvars = array();
 216
 217                                 $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 218                                 $challenge    = hex2bin((string) $res->challenge);
 219
 220                                 $final_dfrn_id = '';
 221
 222                                 if(($contact['duplex']) && strlen($contact['prvkey'])) {
 223                                         openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 224                                         openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 225                                 }
 226                                 else {
 227                                         openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 228                                         openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 229                                 }
 230
 231                                 $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 232
 233                                 if(strpos($final_dfrn_id,':') == 1)
 234                                         $final_dfrn_id = substr($final_dfrn_id,2);
 235
 236                                 if($final_dfrn_id != $orig_id) {
 237
 238                                         // did not decode properly - cannot trust this site
 239                                         continue;
 240                                 }
 241
 242                                 $postvars['dfrn_id'] = $idtosend;
 243                                 $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 244
 245                                 $xml = post_url($contact['poll'],$postvars);
 246                         }
 247                         else {
 248
 249                                 // $contact['network'] !== 'dfrn'
 250
 251                                 $xml = fetch_url($contact['poll']);
 252                         }
 253
 254                         logger('poller: received xml : ' . $xml, LOGGER_DATA);
 255
 256                         if(! strstr($xml,'<?xml')) {
 257                                 logger('poller: post_handshake: response from ' . $url . ' did not contain XML.');
 258                                 $r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
 259                                         dbesc(datetime_convert()),
 260                                         intval($contact['id'])
 261                                 );
 262                                 continue;
 263                         }
 264
 265                         consume_feed($xml,$importer,$contact,$hub,1);
 266
 267                         // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 268
 269                         consume_feed($xml,$importer,$contact,$hub,1);
 270
 271
 272                         if((strlen($hub)) && ($hub_update)
 273                                 && (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
 274                                 logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 275                                 $hubs = explode(',', $hub);
 276                                 if(count($hubs)) {
 277                                         foreach($hubs as $h) {
 278                                                 $h = trim($h);
 279                                                 if(! strlen($h))
 280                                                         continue;
 281                                                 subscribe_to_hub($h,$importer,$contact);
 282                                         }
 283                                 }
 284                         }
 285
 286
 287                         $updated = datetime_convert();
 288
 289                         $r = q("UPDATE `contact` SET `last-update` = '%s', `success_update` = '%s' WHERE `id` = %d LIMIT 1",
 290                                 dbesc($updated),
 291                                 dbesc($updated),
 292                                 intval($contact['id'])
 293                         );
 294
 295                         // loop - next contact
 296                 }
 297         }
 298
 299         return;
 300 }
 301
 302 if (array_search(__file__,get_included_files())===0){
 303   poller_run($argv,$argc);
 304   killme();
 305 }