/tenants/apps/samlservice/deploy-samlservice/samlservice/modules/authfacebook/extlibinc/facebook.php
PHP | 348 lines | 249 code | 39 blank | 60 comment | 47 complexity | 643d5832a1113c8ef4d760afdd4ab6ed MD5 | raw file
- <?php
- // Copyright 2004-2008 Facebook. All Rights Reserved.
- //
- // +---------------------------------------------------------------------------+
- // | Facebook Platform PHP5 client |
- // +---------------------------------------------------------------------------+
- // | Copyright (c) 2007 Facebook, Inc. |
- // | All rights reserved. |
- // | |
- // | Redistribution and use in source and binary forms, with or without |
- // | modification, are permitted provided that the following conditions |
- // | are met: |
- // | |
- // | 1. Redistributions of source code must retain the above copyright |
- // | notice, this list of conditions and the following disclaimer. |
- // | 2. Redistributions in binary form must reproduce the above copyright |
- // | notice, this list of conditions and the following disclaimer in the |
- // | documentation and/or other materials provided with the distribution. |
- // | |
- // | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
- // | IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
- // | OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
- // | IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
- // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
- // | NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
- // | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
- // | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
- // | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
- // | THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- // +---------------------------------------------------------------------------+
- // | For help with this library, contact developers-help@facebook.com |
- // +---------------------------------------------------------------------------+
- //
- include_once 'facebookapi_php5_restlib.php';
- define('FACEBOOK_API_VALIDATION_ERROR', 1);
- class Facebook {
- public $api_client;
- public $api_key;
- public $secret;
- public $generate_session_secret;
- public $session_expires;
- public $fb_params;
- public $user;
- public function __construct($api_key, $secret, $generate_session_secret=false) {
- $this->api_key = $api_key;
- $this->secret = $secret;
- $this->generate_session_secret = $generate_session_secret;
- $this->api_client = new FacebookRestClient($api_key, $secret);
- $this->validate_fb_params();
- if (isset($this->fb_params['friends'])) {
- $this->api_client->friends_list = explode(',', $this->fb_params['friends']);
- }
- if (isset($this->fb_params['added'])) {
- $this->api_client->added = $this->fb_params['added'];
- }
- }
- public function validate_fb_params($resolve_auth_token=true) {
- $this->fb_params = $this->get_valid_fb_params($_POST, 48*3600, 'fb_sig');
- if (!$this->fb_params) {
- $this->fb_params = $this->get_valid_fb_params($_GET, 48*3600, 'fb_sig');
- }
- if ($this->fb_params) {
- // If we got any fb_params passed in at all, then either:
- // - they included an fb_user / fb_session_key, which we should assume to be correct
- // - they didn't include an fb_user / fb_session_key, which means the user doesn't have a
- // valid session and if we want to get one we'll need to use require_login(). (Calling
- // set_user with null values for user/session_key will work properly.)
- // Note that we should *not* use our cookies in this scenario, since they may be referring to
- // the wrong user.
- $user = isset($this->fb_params['user']) ? $this->fb_params['user'] : null;
- $session_key = isset($this->fb_params['session_key']) ? $this->fb_params['session_key'] : null;
- $expires = isset($this->fb_params['expires']) ? $this->fb_params['expires'] : null;
- $this->set_user($user, $session_key, $expires);
- } else if (!empty($_COOKIE) && $cookies = $this->get_valid_fb_params($_COOKIE, null, $this->api_key)) {
- // use $api_key . '_' as a prefix for the cookies in case there are
- // multiple facebook clients on the same domain.
- $expires = isset($cookies['expires']) ? $cookies['expires'] : null;
- $this->set_user($cookies['user'], $cookies['session_key'], $expires);
- } else if (isset($_GET['auth_token']) && $resolve_auth_token &&
- $session = $this->do_get_session($_GET['auth_token'])) {
- $session_secret = ($this->generate_session_secret && !empty($session['secret'])) ? $session['secret'] : null;
- $this->set_user($session['uid'], $session['session_key'], $session['expires'], $session_secret);
- }
- return !empty($this->fb_params);
- }
- // Store a temporary session secret for the current session
- // for use with the JS client library
- public function promote_session() {
- try {
- $session_secret = $this->api_client->auth_promoteSession();
- if (!$this->in_fb_canvas()) {
- $this->set_cookies($this->user, $this->api_client->session_key, $this->session_expires, $session_secret);
- }
- return $session_secret;
- } catch (FacebookRestClientException $e) {
- // API_EC_PARAM means we don't have a logged in user, otherwise who
- // knows what it means, so just throw it.
- if ($e->getCode() != FacebookAPIErrorCodes::API_EC_PARAM) {
- throw $e;
- }
- }
- }
- public function do_get_session($auth_token) {
- try {
- return $this->api_client->auth_getSession($auth_token, $this->generate_session_secret);
- } catch (FacebookRestClientException $e) {
- // API_EC_PARAM means we don't have a logged in user, otherwise who
- // knows what it means, so just throw it.
- if ($e->getCode() != FacebookAPIErrorCodes::API_EC_PARAM) {
- throw $e;
- }
- }
- }
- // Invalidate the session currently being used, and clear any state associated with it
- public function expire_session() {
- if ($this->api_client->auth_expireSession()) {
- if (!$this->in_fb_canvas() && isset($_COOKIE[$this->api_key . '_user'])) {
- $cookies = array('user', 'session_key', 'expires', 'ss');
- foreach ($cookies as $name) {
- setcookie($this->api_key . '_' . $name, false, time() - 3600);
- unset($_COOKIE[$this->api_key . '_' . $name]);
- }
- setcookie($this->api_key, false, time() - 3600);
- unset($_COOKIE[$this->api_key]);
- }
- // now, clear the rest of the stored state
- $this->user = 0;
- $this->api_client->session_key = 0;
- return true;
- } else {
- return false;
- }
- }
- public function redirect($url) {
- if ($this->in_fb_canvas()) {
- echo '<fb:redirect url="' . $url . '"/>';
- } else if (preg_match('/^https?:\/\/([^\/]*\.)?facebook\.com(:\d+)?/i', $url)) {
- // make sure facebook.com url's load in the full frame so that we don't
- // get a frame within a frame.
- echo "<script type=\"text/javascript\">\ntop.location.href = \"$url\";\n</script>";
- } else {
- header('Location: ' . $url);
- }
- exit;
- }
- public function in_frame() {
- return isset($this->fb_params['in_canvas']) || isset($this->fb_params['in_iframe']);
- }
- public function in_fb_canvas() {
- return isset($this->fb_params['in_canvas']);
- }
- public function get_loggedin_user() {
- return $this->user;
- }
- public static function current_url() {
- return 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] . '?poot=bar';
- }
- public function require_login($next = NULL) {
- if ($next === NULL) $next = self::current_url();
- if ($user = $this->get_loggedin_user()) {
- return $user;
- }
- $this->redirect($this->get_login_url($next, $this->in_frame()));
- }
- public function require_install() {
- // this was renamed, keeping for compatibility's sake
- return $this->require_add();
- }
- public function require_add() {
- if ($user = $this->get_loggedin_user()) {
- if ($this->fb_params['added']) {
- return $user;
- }
- }
- $this->redirect($this->get_add_url(self::current_url()));
- }
- public function require_frame() {
- if (!$this->in_frame()) {
- $this->redirect($this->get_login_url(self::current_url(), true));
- }
- }
- public static function get_facebook_url($subdomain='www') {
- return 'http://' . $subdomain . '.facebook.com';
- }
- public function get_install_url($next=null) {
- // this was renamed, keeping for compatibility's sake
- return $this->get_add_url($next);
- }
- public function get_add_url($next=null) {
- return self::get_facebook_url().'/add.php?api_key='.$this->api_key .
- ($next ? '&next=' . urlencode($next) : '');
- }
- public function get_login_url($next, $canvas) {
- return self::get_facebook_url().'/login.php?v=1.0&api_key=' . $this->api_key .
- ($next ? '&next=' . urlencode($next) : '') .
- '&req_perms=email' .
- ($canvas ? '&canvas' : '');
- }
- public static function generate_sig($params_array, $secret) {
- $str = '';
- ksort($params_array);
- // Note: make sure that the signature parameter is not already included in
- // $params_array.
- foreach ($params_array as $k=>$v) {
- $str .= "$k=$v";
- }
- $str .= $secret;
- return md5($str);
- }
- public function set_user($user, $session_key, $expires=null, $session_secret=null) {
- if (!$this->in_fb_canvas() && (!isset($_COOKIE[$this->api_key . '_user'])
- || $_COOKIE[$this->api_key . '_user'] != $user)) {
- $this->set_cookies($user, $session_key, $expires, $session_secret);
- }
- $this->user = $user;
- $this->api_client->session_key = $session_key;
- $this->session_expires = $expires;
- }
- public function set_cookies($user, $session_key, $expires=null, $session_secret=null) {
- $cookies = array();
- $cookies['user'] = $user;
- $cookies['session_key'] = $session_key;
- if ($expires != null) {
- $cookies['expires'] = $expires;
- }
- if ($session_secret != null) {
- $cookies['ss'] = $session_secret;
- }
- foreach ($cookies as $name => $val) {
- setcookie($this->api_key . '_' . $name, $val, (int)$expires);
- $_COOKIE[$this->api_key . '_' . $name] = $val;
- }
- $sig = self::generate_sig($cookies, $this->secret);
- setcookie($this->api_key, $sig, (int)$expires);
- $_COOKIE[$this->api_key] = $sig;
- }
- /**
- * Tries to undo the badness of magic quotes as best we can
- * @param string $val Should come directly from $_GET, $_POST, etc.
- * @return string val without added slashes
- */
- public static function no_magic_quotes($val) {
- if (get_magic_quotes_gpc()) {
- return stripslashes($val);
- } else {
- return $val;
- }
- }
- public function get_valid_fb_params($params, $timeout=null, $namespace='fb_sig') {
- $prefix = $namespace . '_';
- $prefix_len = strlen($prefix);
- $fb_params = array();
- foreach ($params as $name => $val) {
- if (strpos($name, $prefix) === 0) {
- $fb_params[substr($name, $prefix_len)] = self::no_magic_quotes($val);
- }
- }
- if ($timeout && (!isset($fb_params['time']) || time() - $fb_params['time'] > $timeout)) {
- return array();
- }
- if (!isset($params[$namespace]) || (!$this->verify_signature($fb_params, $params[$namespace]))) {
- return array();
- }
- return $fb_params;
- }
- public function verify_signature($fb_params, $expected_sig) {
- return self::generate_sig($fb_params, $this->secret) == $expected_sig;
- }
- public function encode_validationError($summary, $message) {
- return json_encode(
- array('errorCode' => FACEBOOK_API_VALIDATION_ERROR,
- 'errorTitle' => $summary,
- 'errorMessage' => $message));
- }
- public function encode_multiFeedStory($feed, $next) {
- return json_encode(
- array('method' => 'multiFeedStory',
- 'content' =>
- array('next' => $next,
- 'feed' => $feed)));
- }
- public function encode_feedStory($feed, $next) {
- return json_encode(
- array('method' => 'feedStory',
- 'content' =>
- array('next' => $next,
- 'feed' => $feed)));
- }
- public function create_templatizedFeedStory($title_template, $title_data=array(),
- $body_template='', $body_data = array(), $body_general=null,
- $image_1=null, $image_1_link=null,
- $image_2=null, $image_2_link=null,
- $image_3=null, $image_3_link=null,
- $image_4=null, $image_4_link=null) {
- return array('title_template'=> $title_template,
- 'title_data' => $title_data,
- 'body_template'=> $body_template,
- 'body_data' => $body_data,
- 'body_general' => $body_general,
- 'image_1' => $image_1,
- 'image_1_link' => $image_1_link,
- 'image_2' => $image_2,
- 'image_2_link' => $image_2_link,
- 'image_3' => $image_3,
- 'image_3_link' => $image_3_link,
- 'image_4' => $image_4,
- 'image_4_link' => $image_4_link);
- }
- }