src/Core/Session.php

   1 <?php
   2
   3 /**
   4  * @file src/Core/Session.php
   5  */
   6 namespace Friendica\Core;
   7
   8 use Friendica\BaseObject;
   9 use Friendica\Core\Session\ISession;
  10 use Friendica\Database\DBA;
  11 use Friendica\Model\Contact;
  12 use Friendica\Util\Strings;
  13
  14 /**
  15  * High-level Session service class
  16  *
  17  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  18  */
  19 class Session extends BaseObject
  20 {
  21         public static $exists = false;
  22         public static $expire = 180000;
  23
  24         public static function exists($name)
  25         {
  26                 return self::getClass(ISession::class)->exists($name);
  27         }
  28
  29         public static function get($name, $defaults = null)
  30         {
  31                 return self::getClass(ISession::class)->get($name, $defaults);
  32         }
  33
  34         public static function set($name, $value)
  35         {
  36                 self::getClass(ISession::class)->set($name, $value);
  37         }
  38
  39         public static function setMultiple(array $values)
  40         {
  41                 self::getClass(ISession::class)->setMultiple($values);
  42         }
  43
  44         public static function remove($name)
  45         {
  46                 self::getClass(ISession::class)->remove($name);
  47         }
  48
  49         public static function clear()
  50         {
  51                 self::getClass(ISession::class)->clear();
  52         }
  53
  54         /**
  55          * Returns contact ID for given user ID
  56          *
  57          * @param integer $uid User ID
  58          * @return integer Contact ID of visitor for given user ID
  59          */
  60         public static function getRemoteContactID($uid)
  61         {
  62                 /** @var ISession $session */
  63                 $session = self::getClass(ISession::class);
  64
  65                 if (empty($session->get('remote')[$uid])) {
  66                         return false;
  67                 }
  68
  69                 return $session->get('remote')[$uid];
  70         }
  71
  72         /**
  73          * Returns User ID for given contact ID of the visitor
  74          *
  75          * @param integer $cid Contact ID
  76          * @return integer User ID for given contact ID of the visitor
  77          */
  78         public static function getUserIDForVisitorContactID($cid)
  79         {
  80                 /** @var ISession $session */
  81                 $session = self::getClass(ISession::class);
  82
  83                 if (empty($session->get('remote'))) {
  84                         return false;
  85                 }
  86
  87                 return array_search($cid, $session->get('remote'));
  88         }
  89
  90         /**
  91          * Set the session variable that contains the contact IDs for the visitor's contact URL
  92          *
  93          * @param string $url Contact URL
  94          */
  95         public static function setVisitorsContacts()
  96         {
  97                 /** @var ISession $session */
  98                 $session = self::getClass(ISession::class);
  99
 100                 $session->set('remote', []);
 101
 102                 $remote_contacts = DBA::select('contact', ['id', 'uid'], ['nurl' => Strings::normaliseLink($session->get('my_url')), 'rel' => [Contact::FOLLOWER, Contact::FRIEND], 'self' => false]);
 103                 while ($contact = DBA::fetch($remote_contacts)) {
 104                         if (($contact['uid'] == 0) || Contact::isBlockedByUser($contact['id'], $contact['uid'])) {
 105                                 continue;
 106                         }
 107
 108                         $session->set('remote', [$contact['uid'] => $contact['id']]);
 109                 }
 110                 DBA::close($remote_contacts);
 111         }
 112
 113         /**
 114          * Returns if the current visitor is authenticated
 115          *
 116          * @return boolean "true" when visitor is either a local or remote user
 117          */
 118         public static function isAuthenticated()
 119         {
 120                 /** @var ISession $session */
 121                 $session = self::getClass(ISession::class);
 122
 123                 return $session->get('authenticated', false);
 124         }
 125 }