i'm developing a FB app.
The app is authenticating within a canvas page, redirect to OAuth Dialog upon page load
if(!isset($data['user_id']) && $data['page']['liked']){ ?>
<script>
var oauth_url = 'https://www.facebook.com/dialog/oauth/';
oauth_url += '?client_id=XXXX';
oauth_url += '&redirect_uri=' + encodeURIComponent('https://apps.facebook.com/YYYY/');
window.top.location = oauth_url;
</script>
<?php
}
When the user authenticate i just need to read the Name of the User, but i can't find that info into the signed_request.
What am i doing wrong?
You need to do the following steps:
Decode the signed request as mentioned here.
Extract the access token.
Make a new request with the extracted access token to retrieve the user's name.
Related
I am trying to get a Facebook page feed through Google app script.
As of now I tried different scripts but I am getting only app token with the request and if i change it with a usertoken from graph api I got messages but no images and titles
How to get the user token and get the correct fields for as a json ,
var url = 'https://graph.facebook.com'
+ '/love.to.traavel/feed'
+ '?access_token='+ encodeURIComponent(getToken());
// + '?access_token=' + service.getAccessToken();
var response = UrlFetchApp.fetch(url, {'muteHttpExceptions': true});
var json = response.getContentText();
var jsondata = JSON.parse(json);
Logger.log(jsondata); //check this and adjust following for loop and ht
var posts = {};
for (var i in jsondata) {
posts[i] = {"post":jsondata[i].message};
}
return posts;
You should use a Page Token, not a User Token
You need to ask for fields you want to get, with the fields parameter: https://graph.facebook.com/love.to.traavel/feed?fields=field1,field2,...&access_token=xxx
You get a user token by authorizing your App: https://developers.facebook.com/docs/facebook-login/platforms
Be aware that extended user tokens are valid for 60 days only, so you have to refresh it once in a while. There is no user token that is valid forever. You cannot authorize through code only, it needs user interaction. The easiest way is to just generate a user token by selecting your App in the API Explorer and authorize it, like you did already. Then hardcode it in the script code.
Alternatively, you can try implementing this with the manual login flow, check out the docs for that. You can try adding the functionality using this for a custom interface where you go through the login process: https://developers.google.com/apps-script/guides/html/
Since you don´t own the page, you should read this too: https://developers.facebook.com/docs/apps/review/feature/#reference-PAGES_ACCESS
I am using WSO2 as identity server and google authenticator as the identity provider. Login is working correctly. On my web application, I am asking the user to enter his email and then showing google login form. I want to show this email to be prefilled this form. Thanks.
You can do it. For that, you need to customize the OpenIDConnectAuthenticator.java to pass the login_hint to google.
Clone https://github.com/wso2-extensions/identity-outbound-auth-oidc.git.
It is recommended to checkout to the org.wso2.carbon.identity.application.authenticator.oidc version in your server(you can find it in IS_HOME/repository/components/dropins/)
Add these lines before response.sendRedirect(loginPage); in OpenIDConnectAuthenticator.java
String[] usernames = context.getAuthenticationRequest().getRequestQueryParam("username");
if (usernames != null && usernames.length > 0) {
loginPage = loginPage + "&login_hint=" + usernames[0];
}
These lines will get the username from the authentication initiation request and send it as login_hint to google.
Build the component using the following command.
mvn clean install
This will create org.wso2.carbon.identity.application.authenticator.oidc-5.1.17.jar in target folder.
Replace the existing org.wso2.carbon.identity.application.authenticator.oidc-.jar in the IS_HOME/repository/components/dropins folder.
Restart the IS server
When sending authentication request to IS append username=senthalank#gmail.com as url param
For example,
https://localhost:9443/oauth2/authorize?response_type=code&client_id=<cliend_id>&redirect_uri=http://localhost:8080/playground2/oauth2client&scope=openid&username=senthalank#gmail.com
I know how to make a post to a Facebook page via the API using PHP SDK, that is done like this:
$facebook->api('/xxxxxxxxxxx/feed', 'post', array('message'=> 'Hello world!', 'cb' => ''));
Where xxxxxxxxxxx is page id ;)
But doing that, I post to that page as me, Jamie, and not as the Page itself (admin).
So how do I post as Admin/Page instead of myself?
Thanks you for your time!
ANSWER (for lazy people):
First of all you need to make sure you have access to manage pages for user, ex:
<fb:login-button autologoutlink="true" perms="manage_pages"></fb:login-button>
Now you also gets a special token for every page user have access to once you get them.
PHP SDK Example:
//Get pages user id admin for
$fb_accounts = $facebook->api('/me/accounts');
//$fb_accounts is now an array
//holding all data on the pages user is admin for,
//we are interested in access_token
//We save the token for one of the pages into a variable
$access_token = $fb_accounts['data'][0]['access_token'];
//We can now update a Page as Admin
$facebook->api('/PAGE_ID/feed', 'post', array('message'=> 'Hello!', 'access_token' => $access_token, 'cb' => ''));
Check out this note regarding your question: http://developers.facebook.com/docs/api > Authorization > Page impersonation.
Long story short, you need the manage_pages extended permission.
And btw, have you checked this first ?
I am using Facebook JS sdk to show news feeds. the app works well for many users for for some users who have authorized my app doesn't bring reasonable result.
I use following code to get basic profile info which works for some users but for some it doesn't:
FB.api('/' + id + '?access_token=' + access_token, function (response) {
var strTitle = response['first_name'] + " " + response['last_name'];
});
In response object I receive only id, birth date, email, profile link but name is not available. Interestingly when I open profile link in my browser facebook says:
"Sorry, this page isn't available
The link you followed may be broken, or the page may have been removed."
after that my code can bring its posts but again the from name of the posts is missing in response object. The permissions list is attached as picture.
I can't understand what is going on and how can i fix this issue. Any help please?
The problem is that you are using the App center permissions feature (previously known for Authenticated referrals).
Use these settings to enter the set of permissions your app requires when displayed in App Center
You should be passing a login url with the scope array of permissions in JS SDK.
FB.login(function(response) {
// handle the response
}, {scope: 'email,user_likes'});
or via a login button
<div class="fb-login-button" scope="email,user_likes" data-show-faces="true" data-max-rows="3">Login with Facebook</div
I'm writing an Play 2.0.1 application that will be deployed within a canvas page on Facebook. I'm using restFB for the Facebook API.
By manually creating an Access Token at https://developers.facebook.com/tools/explorer?method=GET I can get my application to access the Facebook user's name and render it in the Canvas page iFrame on Facebook.
So, my app controller receives the POST and renders a page like this:
public static Result handle_fb_post() {
return redirect(routes.canvas.fb_render_profile_page());
}
public static Result fb_render_profile_page() {
String accessToken = "<access token copied from facebook graph explorer>";
DefaultFacebookClient().getExtendedAccessToken(application_id, application_secret);
FacebookClient facebookClient = new DefaultFacebookClient(accessToken);
User fbUser = facebookClient.fetchObject("me", com.restfb.types.User.class);
return ok(views.html.fbuser.render(fbUser));
}
My routes are set up as:
POST /fbcanvas/ controllers.FBCanvas.handle_fb_post()
GET /fbcanvas/profile controllers.FBCanvas.fb_render_profile_page()
However, how can I get access to the signed JSON that Facebook sends me in the POST? I believe that this also contains the access token from the user (assuming that they have authorised my app) as described here:
https://developers.facebook.com/docs/samples/canvas/ (See section on "signed_request Parameter").
There are a number of examples out there for Java, PHP, Javascript and Python, but I can't find any that describe how to do this in Play 2 or using RestFB. I have tried a number of different approaches, but cannot work out how to access the signed request in Play 2.
Can anyone help and explain how this can be done?
If the token is sent as Json in the POST request, you can grab it via
def handle_post() = Action { implicit request =>
val jsonBody = request.body.asJson
//process it
}