Im making a facebook canvas app. To get the users info im using the PHP SDK:
<?
$app_id = "";
$secret="";
$canvas_page = "";
$auth_url = "";
$facebook = new Facebook(array(
'appId' => '',
'secret' => '',
));
// Get User ID
$user = $facebook->getUser();
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
}
// Login or logout url will be needed depending on current user state.
if ($user) {
$logoutUrl = $facebook->getLogoutUrl();
} else {
$loginUrl = $facebook->getLoginUrl();
}
$user = $facebook->api('/me');
?>
Everything works fine in all browsers except on IE (all versions). When I click a link to another page inside the app, i get the next error:
Fatal error: Uncaught OAuthException: An active access token must be used to query
information about the current user. thrown in
/hermes/bosoraweb019/b2365/ipg.zicedcom/metrik/fbapp/fb/base_facebook.php on line
The code i just showed is in all pages inside the app, and i only get this problem in IE
Thanks!
It seems that for IE you need to enable 3rth party cookies (p3p). Just changed changed the header with php:
<? header('P3P: CP="NOI ADM DEV PSAi NAV OUR STP IND DEM"'); ?>
Related
I am currently developing a facebook application using the php sdk and the js sdk. (I need both of them)
When a user has not yet authorized the application and loads the canvas page (https://apps.facebook.com/app_name/), nothing happens, he just gets a blank page with the facebook bar on top.
But if he loads the direct url of the application (https://my_app.mydomain.com), it works fine and he is redirected to the OAuth Dialog. If he authorizes the application, he is then redirected to https://apps.facebook.com/app_name/ and the iframe loads correctly.
If the user has already authorized the applications, both links are working (https://apps.facebook.com/app_name/ and https://my_app.mydomain.com).
Here is my authentication code :
<?php
require 'php-sdk/facebook.php';
$facebook = new Facebook(array(
'appId' => '327991330620101',
'secret' => '79asecretcc4300',
'cookie' => true
));
$user = $facebook->getUser();
if ($user) {
try {
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
$user = null;
}
}
if ($user) {
$logoutUrl = $facebook->getLogoutUrl();
} else {
$params = array(
'scope' => 'publish_stream',
'redirect_uri' => 'https://apps.facebook.com/quiet_quies/'
);
$loginUrl = $facebook->getLoginUrl($params);
header('Location: ' . $loginUrl);
}
Does anybody have an idea about this ? It's really driving me mad...
Thanks for you help.
yes, #CBroe is right, in your php code try replacing header('Location: ' . $loginUrl); line with
echo "<script language=javascript>top.location.href ='".$loginUrl."'</script>";
it should work then.
I have searched the web high and low and can´t figure out the problem I´m facing. I have a page tab application on Facebook, the user likes the page to start and then he can answer some questions, I can get the facebook connect to function but I can not get the user id and save it to the database.
I have this in my index page
<? include('db.php');
include_once("config.php");
// Finnur út hvaða spurninga sett á að nota
$sp_set = 1;
require_once 'facebook-php-sdk/src/facebook.php';
// Create our Application instance.
$facebook = new Facebook( array('appId' => '289393321124676',
'secret' => 'd47b7871e0a7fb475db6e2a643f675ed', 'cookie' => true, ));
$signed_request = $facebook -> getSignedRequest();
$like_status = $signed_request["page"]["liked"];
$user = $facebook->getUser();
//If the page is liked then display full app.
?>
And the user id is always null, when the user submits the questions everything is saved to the database but user is 0.
Please help
$user = $facebook->getUser();
This will not get you any user id, unless the user has connected to your app first.
So you have to implement either the client-side or the server-side Auth flow in your app. https://developers.facebook.com/docs/authentication/pagetab/
Try this example:
<?php
$secret = '********************************'; // App Secret
$app_id = '***************'; // App ID
$page_url = 'https://www.facebook.com/*******'; // FB fan page URL, where the application tab is installed
require 'src/facebook.php';
$facebook = new Facebook(array(
'appId' => $app_id,
'secret' => $secret,
));
// Get User ID
$user = $facebook->getUser();
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
}
// Login url will be needed depending on current user state.
if (!$user) {
$loginUrl = $facebook->getLoginUrl(array('redirect_uri' => $page_url.'?sk=app_'.$app_id));
}
$signed_request = $facebook->getSignedRequest();
?><!DOCTYPE html>
<html>
<body><pre>
<?php
if (!$user): // isn't authorized
echo 'Authorize app';
else:
if ($signed_request['page']['liked']): // likes
echo 'The page is liked by user with id '.$signed_request['user_id'];
else:
echo 'The page is <strong>NOT</strong> liked by user with id '.$signed_request['user_id'];
endif;
endif;
?>
</pre></body>
</html>
I was having a similar issue. I ended up using the FB JS-SDK to invoke the oAuth dialog to allow the user to connect to my app and grant me permissions. At that point you can access their user id and whatever other info they're granted you permission for.
Add the following code to your window.fbAsyncInit call:
FB.login(function(response) {
if (response.authResponse) {
console.log('Welcome! Fetching your information.... ');
FB.api('/me', function(response) {
console.log('Good to see you, ' + response.name + '.');
});
} else {
console.log('User cancelled login or did not fully authorize.');
}
});
Source: https://developers.facebook.com/docs/reference/javascript/FB.login/
I just wanted to create a FB app. I went to developers.facebook.com/apps, set up a new app, created a new folder on my server, copied an old (working) app into the folder, changed the app id, secret, canvas page and canvas url in my configuration file... and it did not work.
It displayed an error: "this content can not be displayed in frame".
I would be grateful if you could help me. Thanks.
I copy here my config file: (I intentionally removed the app id and secret here.)
// Facebook App ID/API Key
$appId = '';
// Facebook App Secret
$secret = '';
// Facebook Canvas Page
$redirect_uri = 'https://apps.facebook.com/appname/';
// Facebook Canvas URL
$canvas_url = 'https://myhost.com/appname/';
// Facebook App Permissions
$scope = 'email, publish_actions';
// Configure Facebook connection
require 'facebook.php';
$facebook = new Facebook(array(
'appId' => $appId,
'secret' => $secret,
'cookie' => true,
));
$user = $facebook->getUser();
$loginUrl = $facebook->getLoginUrl(array(
'redirect_uri' => $redirect_uri,
'scope' => $scope,
));
$logoutUrl = $facebook->getLogoutUrl();
if ($user) {
try {
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
$user = null;
}
} else {
header("Location: $loginUrl");
}
You should use JavaScript to redirect the user to the login URL using top.location = '{url}', and then use the login redirect url to send them back to your application. Facebook doesn't allow you to use facebook within an iframe, that why you are seeing that error message - pretty self explanatory.
It displays a "this content can not be displayed in frame" errormessage.
And what about this message gives you trouble understanding?
You can't call the auth dialog in an iframe, because it would enable phishing if the user can’t check the sites address.
After the FBML problems I switched to iFrame apps. All well for now except that 2 things:
1) if I did not entered in the app for a few hours and I try to enter, sometimes it gives me the error page that my server did not responded. It shows the Faceboob page with iFrame inside showing the error. After 1 or 2 refreshes it's working fine.
2) I implemented the new SDK with login like this
$facebook = new Facebook(array(
'appId' => $fbID,
'secret' => $fbSecret,
'cookie' => true,
));
$user = $facebook->getUser();
$loginUrl = $facebook->getLoginUrl();
if ($user) {
try {
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
d($e);
$user = null;
}
}
if (!$user) {
echo "<script type='text/javascript'>
top.location.href = '$loginUrl';
</script>";
exit;
}
The problem is my first redirect, when user enters for the first time. It redirects to my server URL not my Facebook app URL. If I try to put it like this:
$loginUrl = $facebook->getLoginUrl(
array(
'redirect_uri' => 'http://apps.facebook.com/xxx/'
)
);
the login is entering in an infinite loop.
Any help solving this two problems is welcome:-)
Thanks
Darko4spain when the user is redirected back to your site, you can detect if is in iframe with javascript and send them back. I have same issue with my app. This is not a pretty fix but it works.
if (window!=window.top) {
//FB.Canvas.setAutoResize();
setTimeout("FB.Canvas.setAutoGrow()", 1400);
}else {
top.location.href = 'https://apps.facebook.com/AnotherFeed/?ref=redirect#comments';
}
example: https://anotherfeed.com/plugins/index.php will redirect you back to my canvas if you are not in the canvas.
When users come to my site they have the option to log in through facebook. If they are logged in to facebook, and hit the fb login button, it will show all the appropriate logged in dialog. However, if you log out of facebook (either through my site or through facebook itself) and then try to log in through my site again, it will bring you to facebook to sign in, then bring you back to my site. The url changes from x.net/index.php to x.net/index.php?state=... bunch of letters / numbers, but then doesn't return logged in dialog. Hit the button once again after that, and the page refreshes with a different (but similar) url, and returns all the logged in dialog.
Any ideas on how to fix this?
Here is the code I use to connect to facebook and get the login and logout urls.
//facebook application
$fbconfig['appid' ] = "myAppId";
$fbconfig['secret'] = "myAppSecret";
$fbconfig['baseurl'] = "http://myNeatSite.net/index.php";
if (isset($_GET['request_ids'])){
//user comes from invitation
//track them if you need
}
$user = null; //facebook user uid
try{
include_once "facebook.php";
}
catch(Exception $o){
error_log($o);
}
// Create our Application instance.
$facebook = new Facebook(array(
'appId' => $fbconfig['appid'],
'secret' => $fbconfig['secret'],
'cookie' => true,
));
//Facebook Authentication part
$user = $facebook->getUser();
$loginUrl = $facebook->getLoginUrl(
array(
'scope' => 'email,publish_stream',
'redirect_uri' => $fbconfig['baseurl']
)
);
$logoutUrl = $facebook->getLogoutUrl();
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
$user = null;
}
}
As far as I see, you only process the case $user is not null (which means the user is already logged in), but ignore the other case.
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
$user = null;
}
}