File network/facebook/facebook.php

Last commit: Wed Jul 9 00:01:45 2014 +0200	dankert	Anbindung von Twitter und Facebook als Linkempfänger.


     1 <?php
     2 /**
     3  * Copyright 2011 Facebook, Inc.
     4  *
     5  * Licensed under the Apache License, Version 2.0 (the "License"); you may
     6  * not use this file except in compliance with the License. You may obtain
     7  * a copy of the License at
     8  *
     9  *     http://www.apache.org/licenses/LICENSE-2.0
    10  *
    11  * Unless required by applicable law or agreed to in writing, software
    12  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
    13  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
    14  * License for the specific language governing permissions and limitations
    15  * under the License.
    16  */
    17 
    18 require_once "base_facebook.php";
    19 
    20 /**
    21  * Extends the BaseFacebook class with the intent of using
    22  * PHP sessions to store user ids and access tokens.
    23  */
    24 class FacebookApi extends BaseFacebook
    25 {
    26   /**
    27    * Identical to the parent constructor, except that
    28    * we start a PHP session to store the user ID and
    29    * access token if during the course of execution
    30    * we discover them.
    31    *
    32    * @param Array $config the application configuration.
    33    * @see BaseFacebook::__construct in facebook.php
    34    */
    35   public function __construct($config) {
    36     if (!session_id()) {
    37       //session_start();
    38     }
    39     parent::__construct($config);
    40   }
    41 
    42   protected static $kSupportedKeys =
    43     array('state', 'code', 'access_token', 'user_id');
    44 
    45   /**
    46    * Provides the implementations of the inherited abstract
    47    * methods.  The implementation uses PHP sessions to maintain
    48    * a store for authorization codes, user ids, CSRF states, and
    49    * access tokens.
    50    */
    51   protected function setPersistentData($key, $value) {
    52     if (!in_array($key, self::$kSupportedKeys)) {
    53       self::errorLog('Unsupported key passed to setPersistentData.');
    54       return;
    55     }
    56 
    57     $session_var_name = $this->constructSessionVariableName($key);
    58     $_SESSION[$session_var_name] = $value;
    59   }
    60 
    61   protected function getPersistentData($key, $default = false) {
    62     if (!in_array($key, self::$kSupportedKeys)) {
    63       self::errorLog('Unsupported key passed to getPersistentData.');
    64       return $default;
    65     }
    66 
    67     $session_var_name = $this->constructSessionVariableName($key);
    68     return isset($_SESSION[$session_var_name]) ?
    69       $_SESSION[$session_var_name] : $default;
    70   }
    71 
    72   protected function clearPersistentData($key) {
    73     if (!in_array($key, self::$kSupportedKeys)) {
    74       self::errorLog('Unsupported key passed to clearPersistentData.');
    75       return;
    76     }
    77 
    78     $session_var_name = $this->constructSessionVariableName($key);
    79     unset($_SESSION[$session_var_name]);
    80   }
    81 
    82   protected function clearAllPersistentData() {
    83     foreach (self::$kSupportedKeys as $key) {
    84       $this->clearPersistentData($key);
    85     }
    86   }
    87 
    88   protected function constructSessionVariableName($key) {
    89     return implode('_', array('fb',
    90                               $this->getAppId(),
    91                               $key));
    92   }
    93 }



Download network/facebook/facebook.php


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Wed, 9 Jul 2014 00:01:45 +0200	dankert	Anbindung von Twitter und Facebook als Linkempfänger.