unable to connect to Parse.com cloud using php script - php

When I try to connect my parse cloud it shows an error
the username XYZ already taken
I have tried this code:
public function setUp() {
$this->parseUser = new parseUser;
$this->testUser = array(
'username' => 'XYZ',
'password' => '*******',
'email' => 'abc#mail.com',
'customField' => 'customValue'
);
}
my parseconfig.php file look like this
class parseConfig {
const APPID = 'kS131sdje....';
const MASTERKEY = 'w1d...';
const RESTKEY = 'o16r...';
const PARSEURL = 'https://api.parse.com/1/';
}
Can you help me? Is it trying to SignUp instead of Signin?
I downloaded this code from the link below and am trying to connect it to my Parse.com cloud
https://github.com/apotropaic/parse.com-php-library

You should check out the Parse documentation for PHP for user operations.
Here are two examples for signup and signin:
Registration:
$user = new ParseUser();
$user->set("username", "my name");
$user->set("password", "my pass");
$user->set("email", "email#example.com");
// other fields can be set just like with ParseObject
$user->set("phone", "415-392-0202");
try {
$user->signUp();
// Hooray! Let them use the app now.
} catch (ParseException $ex) {
// Show the error message somewhere and let the user try again.
echo "Error: " . $ex->getCode() . " " . $ex->getMessage();
}
Login:
try {
$user = ParseUser::logIn("myname", "mypass");
// Do stuff after successful login.
} catch (ParseException $error) {
// The login failed. Check error to see why.
}

Related

Instagram private InstagramAPI\Instagram::_setUser() error

I'm trying to implementing https://github.com/mgp25/Instagram-API on laravel and after successful login in Instagram i must to use _setUser to use exiting data after login, for example:
public function check()
{
$username = 'XXX';
$password = 'XXX';
$ig = new Instagram();
try {
$ig->_setUser($username, $password);
} catch (\Exception $e) {
echo 'Something went wrong: '.$e->getMessage()."\n";
exit(0);
}
}
in this code i get this error:
"Call to protected method InstagramAPI\Instagram::_setUser() from context 'App\Http\Controllers\InstagramController'"
This _setUser method used to be public in previous versions. The developers of the API seem to be recommending that you use login() function for every call and it will check if a new full login needs to be done, if it does not need to be done, _setUser will be called.
In the past doing a login() for every request was very slow, but seems to be much better now with newer versions of the private API.
For login, you can use this snippet:
$username = 'password';
$password = 'username';
$instagram = new Instagram(false, true, [
'storage' => 'mysql',
'dbhost' => 'localhost',
'dbname' => 'sessions',
'dbusername' => 'root',
'dbpassword' => '',
]);
$instagram->login($username, $password);
and for access user id you can do this:
$instagram->people->getUserIdForName($username);
and after you successfully logged in, try this one for accessing current user:
$instagram->account->getCurrentUser()->getUser();
The _setUser Function is Private, You can Edit Private to Public function then only you can use the function, and even if you don't change it will take automatically _setUser Method because of session store in Folder is Active. You can check Below
protected function _login(
$username,
$password,
$forceLogin = false,
$appRefreshInterval = 1800)
{
if (empty($username) || empty($password)) {
throw new \InvalidArgumentException('You must provide a username and password to _login().');
}
// Switch the currently active user/pass if the details are different.
if ($this->username !== $username || $this->password !== $password) {
$this->_setUser($username, $password);
}
// Perform a full relogin if necessary.
if (!$this->isMaybeLoggedIn || $forceLogin) {
$this->_sendPreLoginFlow();
try {
$response = $this->request('accounts/login/')
->setNeedsAuth(false)
->addPost('phone_id', $this->phone_id)
->addPost('_csrftoken', $this->client->getToken())
->addPost('username', $this->username)
->addPost('adid', $this->advertising_id)
->addPost('guid', $this->uuid)
->addPost('device_id', $this->device_id)
->addPost('password', $this->password)
->addPost('login_attempt_count', 0)
->getResponse(new Response\LoginResponse());
} catch (\InstagramAPI\Exception\InstagramException $e) {
if ($e->hasResponse() && $e->getResponse()->isTwoFactorRequired()) {
// Login failed because two-factor login is required.
// Return server response to tell user they need 2-factor.
return $e->getResponse();
} else {
// Login failed for some other reason... Re-throw error.
throw $e;
}
}
$this->_updateLoginState($response);
$this->_sendLoginFlow(true, $appRefreshInterval);
// Full (re-)login successfully completed. Return server response.
return $response;
}
// Attempt to resume an existing session, or full re-login if necessary.
// NOTE: The "return" here gives a LoginResponse in case of re-login.
return $this->_sendLoginFlow(false, $appRefreshInterval);
}

Facebook SDK error: Cross-site request forgery validation failed. Required param "state" missing from persistent data

I recently upgraded to the latest version of the facebook SDK and I'm having issues logging users in. I generate the login link just fine, but when facebook sends the user back to my site with the token, I get this error:
fb sdk error: Cross-site request forgery validation failed. Required param "state" missing from persistent data.
I tried to do some trouble shooting. I printed out everything in the session data and everything in the GET request. I see that the GET has a state parameter and the session data has a FBRLH_state parameter. They both have the same value. So how is it telling me that the parameter is missing?
I've tried some suggestions I've seen on other questions (ie, starting the session), but nothing seems to work.
Any help would be greatly appreciated! I'm using the php-graph-sdk-5.5. My facebook connect file is below
if(!class_exists('facebook')){
class facebook{
private $db = null;
private $fb = null;
private $token = null;
private $DEV = null;
private $sdk_error = null;
private $api_error = null;
private $verbose = false;
private $graph_user = null;
private $db_helper = null;
private $errors = null;
public function __construct($db,
$fb_id = FB_APP_ID,
$fb_secret = FB_APP_SECRET,
$fb_version = FB_DEFAULT_GRAPH_VERSION){
if($this->verbose) echo '<pre>';
if($this->verbose) echo 'starting construction'.PHP_EOL;
$this->db = $db;
if(!$this->fb){
$this->log[] = 'no connect found. building..'.PHP_EOL;
$this->fb = new Facebook\Facebook(array(
'app_id' => $fb_id,
'app_secret' => $fb_secret,
'default_graph_version' => $fb_version));
if(!$this->fb){
die('facebook initialization failure');
}
$this->log[] = 'finished building new connection'.PHP_EOL;
}
}
public function get_login_url($callback_uri, $permissions = ['email','user_birthday']){
global $_DEV,$_config;
$helper = $this->fb->getRedirectLoginHelper();
$callback_host = ($_DEV ? $_config['dev_domain'] : $_config['live_domain']);
$callback_url = 'https://'.$callback_host.$callback_uri;
return $helper->getLoginUrl($callback_url, $permissions);
}
public function catch_token(){
if($this->token){
$this->log[] = 'already have token.'.PHP_EOL;
return $this->token;
} else if(!$this->fb){
$this->log[] = $this->error[] = 'no facebook connection in catch token()';
}
$this->log[] = 'starting catch token routine.'.PHP_EOL;
//$_SESSION['state']=$_GET['state'];
echo '<pre>' . var_export($_SESSION, true) . '</pre>';
echo '<BR><BR><pre>' . var_export($_GET, true) . '</pre>';
$helper = $this->fb->getRedirectLoginHelper();
$this->token = $helper->getAccessToken();
$this->log[] = 'caught token: '.$this->token;
$string_token = $this->token.PHP_EOL;
//die($string_token);
try {
$helper = $this->fb->getRedirectLoginHelper();
$this->token = $helper->getAccessToken();
$this->log[] = 'caught token: '.$this->token;
$string_token = $this->token.PHP_EOL;
return $this->user_flush();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
$this->log[] = $this->errors[] = 'fb api error: ' . $e->getMessage();
return null;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
$this->log[] = $this->errors[] = 'fb sdk error: ' . $e->getMessage();
return null;
} catch(Exception $e){
$this->log[] = $this->errors[] = 'unknown error: '.$e->getMessage();
return null;
}
}
public function get_token(){
$this->log[] = 'get token called.'.PHP_EOL;
if($this->token){
$this->log[] = 'token found in object'.PHP_EOL;
//echo '<pre>';
//die(debug_print_backtrace());
return $this->token;
} else {
$this->log[] = $this->errors[] = 'token not found in object.'.PHP_EOL;
return null;
}
}
public function get_user($override = false){
$fields = array(
'first_name',
'last_name',
'email',
'id',
'picture',
'birthday',
'gender',);
$fields = implode(',',$fields);
if($this->graph_user === null){
if($this->fb && $this->get_token()){
try {
// Returns a Facebook\FacebookResponse object
$resp_url = '/me?fields='.$fields.'&debug=all';
$this->log[] = $resp_url;
$response = $this->fb->get($resp_url, $this->get_token());
$this->graph_user = $response->getGraphUser();
return $this->graph_user;
}
catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
$this->api_error = 'fb api error: ' . $e->getMessage();
$this->errors[] = $this->api_error;
return null;
}
catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
$this->sdk_error = 'fb sdk error: ' . $e->getMessage();
$this->errors[] = $this->sdk_error;
return null;
}
} else {
$this->sdk_error = "get_user(): fb connection or token not set. are you logged in?";
$this->errors[] = $this->sdk_error;
//echo '<pre>';
//debug_print_backtrace();
//die('token: '.$this->token);
return null;
}
} else {
$this->sdk_error = "get_user(): graph_user already set";
$this->errors[] = $this->sdk_error;
return $this->graph_user;
}
}
public function get_user_first_name(){
return $this->get_user()['first_name'];
}
public function get_user_last_name(){
return $this->get_user()['last_name'];
}
public function get_user_id(){
return $this->get_user()['id'];
}
public function get_user_email(){
return $this->get_user()['email'];
}
public function get_user_picture(){
return $this->get_user()['picture']['url'];
}
public function get_user_birthday(){
return $this->get_user()['birthday'];
}
public function user_flush(){
//this is the command function.
// runs the basic functionality of this class
// by adding this user to the database if they're not there
// and logging them in if they are.
$this->graph_user = $this->get_user();
//$this->log['graph_user_at_user_flush'] = $this->graph_user;
$this->build_user();
$this->log['GRAPH_USER'] = $this->get_user();
$this->log['user_input_array#user_flush'] = $this->user_input;
if($return = $this->user->fb_register()){
//die(print_r(debug_backtrace(),true));
//$this->log['success return'] = '. '.$return;
return $return;
} else {
//die('<pre>'.print_r(debug_backtrace(),true));
$this->log['fb_register_fail'] = array('fb_register() (also login) failed.',$this->user->get_errors());
return null;
}
}
public function build_user(){
$this->user_input['first_name'] = $this->get_user_first_name();
//$this->user_input['last_name'] = $this->get_user_last_name();
$this->user_input['facebook_id'] = $this->get_user_id();
$this->user_input['email'] = $this->get_user_email();
$this->user_input['image_url'] = $this->get_user_picture();
$this->user_input['birthday'] = $this->get_user_birthday();
if($this->verbose)
print_r($this->user_input);
$this->user = new user($this->user_input,$this->db);
}
public function logout(){
unset($_SESSION['fb_id']);
unset($this->token);
unset($this->fb);
}
public function get_errors(){
return array_unique($this->errors);
}
public function get_log(){
return array_unique($this->log);
}
}
}
//finally, create the connection.
if(!isset($fb))
$fb = new facebook($db);
This might be kinda late but I hope it helps others.
I had this problem for a while and I've searched around and have seen a lot of different solutions, many of which disable the CSRF check. So after everything I've read, this is what worked for me.
For what I understand, you get this error when your redirect URL doesn't match the one you have setup on your app settings so my issue was fixed every easily but I have also seen people have issues by not having their session started properly, so I will cover both issues.
Step 1: Ensure your session has started when it needs to.
for example: fb-config.php
session_start();
include_once 'path/to/Facebook/autoload.php';
$fb = new \Facebook\Facebook([
'app_id' => 'your_app_id',
'app_secret' => 'your_secret_app_id',
'default_graph_version' => 'v2.10'
]);
$helper = $fb->getRedirectLoginHelper();
if your facebook callback code is on another file aside from the config, then start the session on that file too.
for example: fb-callback.php
session_start();
include_once 'path/to/fb-config.php';
try {
$accessToken = $helper->getAccessToken();
} catch (\Facebook\Exceptions\FacebookResponseException $e) {
echo "Response Exception: " . $e->getMessage();
exit();
} catch (\Facebook\Exceptions\FacebookSDKException $e) {
echo "SDK Exception: " . $e->getMessage();
exit();
}
/** THE REST OF YOUR CALLBACK CODE **/
Now, what solved my actual issue.
Step 3: Set up your redirect URL in your app settings.
In your Facebook Login app settings, go to the Valid OAuth redirect URIs where you should have added the url that points to your fb-callback.php file.
http://example.com/fb-callback.php
AND ALSO
http://www.example.com/fb-callback.php
then setup your redirect url as follows.
$redirectURL = "http://".$_SERVER['SERVER_NAME']."/fb-callback.php";
$permissions = ['email'];
$fLoginURL = $helper->getLoginUrl($redirectURL, $permissions);
Why both with and without www and why use SERVER_NAME?
because your Valid OAuth redirect URI needs to match your redirect url in your code and if in you app settings you only set your OAuth redirect as http://example.com/fb-callback.php and set up your $redirectURL as http://example.com/fb-bacllback.php to make it match but the user entered your site as http://www.example.com then the user will get the Facebook SDK error: Cross-site request forgery validation failed. Required param “state” missing from persistent data because the URL the user is at, doesn't EXACTLY match what you have setup. Why? I have no freaking idea.
My approach makes it so if the user enters your site as http://example.com or http://www.example.com, it will always match what you setup in your app settings. why? because $_SERVER['SERVER_NAME'] will return the domain with or without the www depending on how the user entered the url in the browser.
This are my findings and this is about the only thing that worked for me without removing the CSRF check and so far, no issues.
I hope this helps.
fb sdk error: Cross-site request forgery validation failed. Required param "state" missing from persistent data.
It has something to do with that you are going through the routine of calling getRedirectLoginHelper and $helper->getAccessToken() twice - once "on their own", and then again inside a try-catch block (copy&paste mistake, or unfortunate debug attempt maybe?)
I'm a bit too lazy to go check the SDK source right now, but I think it deliberately unsets the state parameter inside the session after the code was exchanged for a token, as part of making the whole process more secure - so that when you call getAccessToken a second time, it fails.
If anyone still with this proglem just add a session_start() at the begining of the callback file.
Well I faced the same error today and I got my solution from tutorials point
In your callback file, just add this line and you're good to go
if (isset($_GET['state'])) {
$helper->getPersistentDataHandler()->set('state', $_GET['state']);
}
I know I'm late to the party, but I faced this error, and I don't believe my solution was covered in the above responses, so here it goes:
One reason this error may arise is if you submit the same URL login request to Facebook more than once. For example, a user may impatiently click on a login button more than once, triggering multiple submissions of the URL. In my case, the solution was to intercept all clicks after the first with a JavaScript function.
Change version to v2.10 Check graph you are using in configuration php file
// Call Facebook API
Both the things didn't work for me for v14.
Adding that small code just before $helper = $fb->getRedirectLoginHelper(); worked.
Here's the code that actually worked -
$helper->getPersistentDataHandler()->set('state', $_GET['state']);
Still got this error after clicking login..
SDK Exception: Cross-site request forgery validation failed. Required
param "state" missing from persistent data.
I'll just follow and read the previous topic and comments above. And double check URL of Valid OAuth redirect URI.
Here's what id done. Well appreciated if you can share some thoughts and correct me..
create-acc.php
///FACEBOOK SIGNUP
session_start();
include_once 'config-facebook.php';
try {
$accessToken = $helper->getAccessToken();
} catch (\Facebook\Exceptions\FacebookResponseException $e) {
echo "Response Exception: " . $e->getMessage();
exit();
} catch (\Facebook\Exceptions\FacebookSDKException $e) {
echo "SDK Exception: " . $e->getMessage();
exit();
}
$redirectURL = "http://".$_SERVER['SERVER_NAME']."/create-acc.php";
$permissions = ['email'];
$fLoginURL = $helper->getLoginUrl($redirectURL, $permissions);
$facebook_button ='
<div style="background-color:white; color:#4b5563; cursor:pointer;" class="inline-flex border-2 py-1.5 px-5 rounded text-lg border-gray-300">
<div style="margin-top:5px;">
<img style="width:25px;" src="./assets/apps/facebook-logo-2019.png"/>
</div>
<b>Sign up with Facebook</b>
</div>
';
config-facebook.php
include_once 'Facebook/autoload.php';
$fb = new \Facebook\Facebook([
'app_id' => '**************',
'app_secret' => '*************',
'default_graph_version' => 'v2.10'
]);
$helper = $fb->getRedirectLoginHelper();
I'm literally new on this programming and still learning. So if you help it really save my time and learn on provided codes.And if I tried to add some callback codes to get a data, it looks like this on my work
create-acc.php add ons callback codes
///FACEBOOK SIGNUP
session_start();
include_once 'config-facebook.php';
if (isset($accessToken))
{
if (!isset($_SESSION['facebook_access_token']))
{
//get short-lived access token
$_SESSION['facebook_access_token'] = (string) $accessToken;
//OAuth 2.0 client handler
$oAuth2Client = $fb->getOAuth2Client();
//Exchanges a short-lived access token for a long-lived one
$longLivedAccessToken = $oAuth2Client->getLongLivedAccessToken($_SESSION['facebook_access_token']);
$_SESSION['facebook_access_token'] = (string) $longLivedAccessToken;
//setting default access token to be used in script
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
}
else
{
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
}
if (isset($_GET['code']))
{
header('Location: ./');
}
try {
$fb_response = $fb->get('/me?fields=name,first_name,last_name,email');
$fb_response_picture = $fb->get('/me/picture?redirect=false&height=200');
$fb_user = $fb_response->getGraphUser();
$picture = $fb_response_picture->getGraphUser();
$_SESSION['fb_user_id'] = $fb_user->getProperty('id');
$_SESSION['fb_user_name'] = $fb_user->getProperty('name');
$_SESSION['fb_user_email'] = $fb_user->getProperty('email');
$_SESSION['fb_user_pic'] = $picture['url'];
} catch(Facebook\Exceptions\FacebookResponseException $e) {
echo 'Facebook API Error: ' . $e->getMessage();
session_destroy();
header("Location: ./");
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
echo 'Facebook SDK Error: ' . $e->getMessage();
exit;
}
}
else
{
$redirectURL = "http://".$_SERVER['SERVER_NAME']."/create-acc.php";
$permissions = ['email'];
$fLoginURL = $helper->getLoginUrl($redirectURL, $permissions);
$facebook_button ='
<div style="background-color:white; color:#4b5563; cursor:pointer;" class="inline-flex border-2 py-1.5 px-5 rounded text-lg border-gray-300">
<div style="margin-top:5px;">
<img style="width:25px;" src="./assets/apps/facebook-logo-2019.png"/>
</div>
<b>Sign up with Facebook</b>
</div>
';
}
and the config-facebook.php
session_start();
include_once 'Facebook/autoload.php';
$fb = new \Facebook\Facebook([
'app_id' => '************',
'app_secret' => '************',
'default_graph_version' => 'v2.10'
]);
$helper = $fb->getRedirectLoginHelper();
try {
if(isset($_SESSION['facebook_access_token']))
{$accessToken = $_SESSION['facebook_access_token'];}
else
{$accessToken = $helper->getAccessToken();}
} catch(FacebookResponseException $e) {
echo 'Facebook API Error: ' . $e->getMessage();
exit;
} catch(FacebookSDKException $e) {
echo 'Facebook SDK Error: ' . $e->getMessage();
exit;
}
and the result here
Fatal error: Uncaught Facebook\Exceptions\FacebookSDKException: Cross-site request forgery validation failed. Required param "state" missing from persistent data. in /www/wwwroot/fruitask.com/Facebook/Helpers/FacebookRedirectLoginHelper.php:244 Stack trace: #0 /www/wwwroot/fruitask.com/Facebook/Helpers/FacebookRedirectLoginHelper.php(221): Facebook\Helpers\FacebookRedirectLoginHelper->validateCsrf() #1 /www/wwwroot/fruitask.com/config-facebook.php(20): Facebook\Helpers\FacebookRedirectLoginHelper->getAccessToken() #2 /www/wwwroot/fruitask.com/create-acc.php(162): include_once('/www/wwwroot/fr...') #3 {main} thrown in /www/wwwroot/fruitask.com/Facebook/Helpers/FacebookRedirectLoginHelper.php on line 244
Please do share some thoughts or any alternative way I can implement Facebook login on my website using PHP. Thanks in advance

Exception trying to post a link on Facebook page using grahp API for PHP

I've already searched among the other questions here on Stackoverflow and on other websites, but I couldn't find a solution, also because it seems that FB often changes the authentication method, so old solutions are no more valid.
I'm using SDK4 and this is my code as I have it at the moment
FacebookSession::setDefaultApplication($app_id, $app_secret);
$session = FacebookSession::newAppSession();
try {
$session->validate();
} catch (FacebookRequestException $ex) {
echo $ex->getMessage();
} catch (\Exception $ex) {
echo $ex->getMessage();
}
if($session)
{
try {
$response = (new FacebookRequest(
$session, 'POST', '/me/feed', array(
'link' => 'www.mysite.it',
'message' => 'some text'
)
))->execute()->getGraphObject();
echo "Posted with id: " . $response->getProperty('id');
} catch(FacebookRequestException $e) {
echo "Exception occured, code: " . $e->getCode() .
" with message: " . $e->getMessage();
}
}
I get this message:
"Exception occured, code: 2500 with message: An active access token must be used to query information about the current user."
Given the message, the session is correctly created and validated, the problem is on the execute() method, how do I fix it?
It looks like you've created your session for your app, but to post on a users behalf you need to get an access token for said user and then call
$this->facebook = new FacebookSession($access_token);

Login with Facebook in Laravel 4

All I'm trying to do is have the user connect with facebook, grab his information (email, name, profile_pic) and register him automatically on my site.
the problem is when I visit /user/login/fb/ I get redirected to the fb application to grant permission and then it redirects me to
http://local.serv/user/login/fb/callback?code=AQB7Uf7pcZSY89WYUKofY8bOgBY1qCcWA5p6_G-9MVdczN60C0TNOgFIi9LBRwquagZ6VbC6_kjD9-D0ZevKHyNGw88LuRJcuqdq2RbwCKNlC02_4eMtiNAWxX76XHm1CzU0F7nSVQ4KxENoDPFpKIs1oV-wQTkO7YuuGznL9UuzfK-hqTtZAIRBvQ_N_yh03LsdgaZ9-f6z5yc5FGnJ3sJyrC-3DGrjkSzhPpJHHk5tr7LorzqW9TNcaFpB9eE51wdsEHOa5oNEWycwzXjY-7Me1Uod3KVBGpb8tzeYVHArphMc2n45IF1pfAWMZZZ51Dw&state=f25e8641df013970542b7463b8899ccf#=
and give me this error
Facebook \ FacebookSDKException (700)
You must provide or set a default application id.
Here are my routes
Route::get('user/login/fb', function() {
FacebookSession::setDefaultApplication('', '');
$helper = new FacebookRedirectLoginHelper('user/login/fb/callback');
$loginUrl = $helper->getLoginUrl();
return "<a href='$loginUrl'>facebook</a>";
});
Route::get('user/login/fb/callback', function() {
// A FacebookResponse is returned from an executed FacebookRequest
$helper = new FacebookRedirectLoginHelper('user/login/fb/callback');
$session = $helper->getSessionFromRedirect();
$request = new FacebookRequest($session, 'GET', '/me');
try {
$response = $request->execute();
$me = $response->getGraphObject();
} catch (FacebookRequestException $ex) {
echo $ex->getMessage();
} catch (\Exception $ex) {
echo $ex->getMessage();
}
print_r($me);//->getProperty("id"));
$user = new Giftee;
$user->name = $me->getProperty('first_name') . ' ' . $me->getProperty('last_name');
$user->email = $me->getProperty('email');
$user->photo = 'http://graph.facebook.com' . $me->getProperty('id') . '/picture?type=large';
$user->save();
});
PS: if you have a clear tutorial with views and everything on how to integrate fb login with laravel please do share, I've been looking for days, the material is so limited.
Your Facebook API credentials aren't set when you request the user/login/fb/callback, either add the FacebookSession::setDefaultApplication(...) at the beginning of that route as well or use another library that allows you to set these in a global configuration file.
Your route should look like this :
Route::get('user/login/fb/callback', function() {
FacebookSession::setDefaultApplication(); // your API credentials
// here goes the rest of your code
};

An active access token must be used to query information about the current user. Facebook PHP SDK v4

I'm passing the facebook login token from ember-cli to my laravel server to register/login my user but I'm stuck with this error.
{"error":{"type":"Facebook\FacebookAuthorizationException","message":"An active access token must be used to query information about the current user.","file":"C:\xampp\htdocs\LoginApp\vendor\facebook\php-sdk-v4\src\Facebook\FacebookRequestException.php","line":134}}
Here is my function
public function authorizeFacebookUser() {
$facebook_token = Input::get('facebook_access_token');
FacebookSession::setDefaultApplication('xxxxxxxx', 'xxxxx');
$session = new FacebookSession((string) $facebook_token);
if ($session) {
// have session
try {
$user_profile = (new FacebookRequest(
$session, 'GET', '/me'
))->execute()->getGraphObject(GraphUser::className());
echo "Name: " . $user_profile->getName();
} catch(FacebookRequestException $e) {
echo "Exception occured, code: " . $e->getCode();
echo " with message: " . $e->getMessage();
}
}
}
After creating a session with the access_token, you should validate it to make sure it's correct and working:
try {
if ( !$session->validate() ) {
$session = null;
}
} catch ( Exception $e ) {
// catch any exceptions
$session = null;
}
Then you can make the API call to get the user's profile information. Hopefully, the above code will display any errors related to the access_token.

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