dav/friendica/dav_friendica_auth.inc.php

   1 <?php
   2
   3 use Friendica\Model\User;
   4
   5 class Sabre_DAV_Auth_Backend_Std extends Sabre_DAV_Auth_Backend_AbstractBasic
   6 {
   7         /**
   8          * @var Sabre_DAV_Auth_Backend_Std|null
   9          */
  10         private static $instance = null;
  11
  12         /**
  13          * @static
  14          * @return Sabre_DAV_Auth_Backend_Std
  15          */
  16         public static function getInstance()
  17         {
  18                 if (is_null(self::$instance)) {
  19                         self::$instance = new Sabre_DAV_Auth_Backend_Std();
  20                 }
  21                 return self::$instance;
  22         }
  23
  24         /**
  25          * @return array
  26          */
  27         public function getUsers()
  28         {
  29                 return [$this->currentUser];
  30         }
  31
  32         /**
  33          * @return null|string
  34          */
  35         public function getCurrentUser()
  36         {
  37                 return $this->currentUser;
  38         }
  39
  40         /**
  41          * Authenticates the user based on the current request.
  42          *
  43          * If authentication is successful, true must be returned.
  44          * If authentication fails, an exception must be thrown.
  45          *
  46          * @param Sabre_DAV_Server $server
  47          * @param string $realm
  48          * @throws Sabre_DAV_Exception_NotAuthenticated
  49          * @return bool
  50          */
  51         public function authenticate(Sabre_DAV_Server $server, $realm)
  52         {
  53                 $a = get_app();
  54                 if (isset($a->user["uid"])) {
  55                         $this->currentUser = strtolower($a->user["nickname"]);
  56                         return true;
  57                 }
  58
  59                 $auth = new Sabre_HTTP_BasicAuth();
  60                 $auth->setHTTPRequest($server->httpRequest);
  61                 $auth->setHTTPResponse($server->httpResponse);
  62                 $auth->setRealm($realm);
  63                 $userpass = $auth->getUserPass();
  64                 if (!$userpass) {
  65                         $auth->requireLogin();
  66                         throw new Sabre_DAV_Exception_NotAuthenticated('No basic authentication headers were found');
  67                 }
  68
  69                 // Authenticates the user
  70                 if (!$this->validateUserPass($userpass[0], $userpass[1])) {
  71                         $auth->requireLogin();
  72                         throw new Sabre_DAV_Exception_NotAuthenticated('Username or password does not match');
  73                 }
  74                 $this->currentUser = strtolower($userpass[0]);
  75                 return true;
  76         }
  77
  78         /**
  79          * @param string $username
  80          * @param string $password
  81          * @return bool
  82          */
  83         protected function validateUserPass($username, $password)
  84         {
  85                 return User::authenticate($username, $password);
  86         }
  87 }